Configure init and cleanup asynchronously

Accessing the settings (like --show-touches) on start should not delay
screen mirroring.

PR #2802 <https://github.com/Genymobile/scrcpy/pull/2802>

BUILD.md

@@ -2,11 +2,44 @@
 
 Here are the instructions to build _scrcpy_ (client and server).
 
-You may want to build only the client: the server binary, which will be pushed
-to the Android device, does not depend on your system and architecture. In that
-case, use the [prebuilt server] (so you will not need Java or the Android SDK).
 
-[prebuilt server]: #prebuilt-server
+## Simple
+
+If you just want to install the latest release from `master`, follow this
+simplified process.
+
+First, you need to install the required packages:
+
+```bash
+# for Debian/Ubuntu
+sudo apt install ffmpeg libsdl2-2.0-0 adb wget \
+                 gcc git pkg-config meson ninja-build libsdl2-dev \
+                 libavcodec-dev libavdevice-dev libavformat-dev libavutil-dev \
+                 libusb-1.0-0 libusb-dev
+```
+
+Then clone the repo and execute the installation script
+([source](install_release.sh)):
+
+```bash
+git clone https://github.com/Genymobile/scrcpy
+cd scrcpy
+./install_release.sh
+```
+
+When a new release is out, update the repo and reinstall:
+
+```bash
+git pull
+./install_release.sh
+```
+
+To uninstall:
+
+```bash
+sudo ninja -Cbuild-auto uninstall
+```
+
 
 ## Branches
 
@@ -56,15 +89,15 @@ Install the required packages from your package manager.
 
 ```bash
 # runtime dependencies
-sudo apt install ffmpeg libsdl2-2.0-0 adb
+sudo apt install ffmpeg libsdl2-2.0-0 adb libusb-1.0-0
 
 # client build dependencies
-sudo apt install gcc git pkg-config meson ninja-build \
-                 libavcodec-dev libavformat-dev libavutil-dev \
-                 libsdl2-dev
+sudo apt install gcc git pkg-config meson ninja-build libsdl2-dev \
+                 libavcodec-dev libavdevice-dev libavformat-dev libavutil-dev \
+                 libusb-dev
 
 # server build dependencies
-sudo apt install openjdk-8-jdk
+sudo apt install openjdk-11-jdk
 ```
 
 On old versions (like Ubuntu 16.04), `meson` is too old. In that case, install
@@ -83,7 +116,7 @@ pip3 install meson
 sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
 
 # client build dependencies
-sudo dnf install SDL2-devel ffms2-devel meson gcc make
+sudo dnf install SDL2-devel ffms2-devel libusb-devel meson gcc make
 
 # server build dependencies
 sudo dnf install java-devel
@@ -106,13 +139,13 @@ sudo apt install mingw-w64 mingw-w64-tools
 You also need the JDK to build the server:
 
 ```bash
-sudo apt install openjdk-8-jdk
+sudo apt install openjdk-11-jdk
 ```
 
 Then generate the releases:
 
 ```bash
-make -f Makefile.CrossWindows
+./release.sh
 ```
 
 It will generate win32 and win64 releases into `dist/`.
@@ -173,12 +206,12 @@ brew install pkg-config meson
 ```
 
 Additionally, if you want to build the server, install Java 8 from Caskroom, and
-make it avaliable from the `PATH`:
+make it available from the `PATH`:
 
 ```bash
 brew tap homebrew/cask-versions
-brew cask install adoptopenjdk/openjdk/adoptopenjdk8
-export JAVA_HOME="$(/usr/libexec/java_home --version 1.8)"
+brew install adoptopenjdk/openjdk/adoptopenjdk11
+export JAVA_HOME="$(/usr/libexec/java_home --version 1.11)"
 export PATH="$JAVA_HOME/bin:$PATH"
 ```
 
@@ -189,8 +222,27 @@ See [pierlon/scrcpy-docker](https://github.com/pierlon/scrcpy-docker).
 
 ## Common steps
 
-If you want to build the server, install the [Android SDK] (_Android Studio_),
-and set `ANDROID_SDK_ROOT` to its directory. For example:
+**As a non-root user**, clone the project:
+
+```bash
+git clone https://github.com/Genymobile/scrcpy
+cd scrcpy
+```
+
+
+### Build
+
+You may want to build only the client: the server binary, which will be pushed
+to the Android device, does not depend on your system and architecture. In that
+case, use the [prebuilt server] (so you will not need Java or the Android SDK).
+
+[prebuilt server]: #option-2-use-prebuilt-server
+
+
+#### Option 1: Build everything from sources
+
+Install the [Android SDK] (_Android Studio_), and set `ANDROID_SDK_ROOT` to its
+directory. For example:
 
 [Android SDK]: https://developer.android.com/studio/index.html
 
@@ -203,20 +255,11 @@ export ANDROID_SDK_ROOT=~/Library/Android/sdk
 set ANDROID_SDK_ROOT=%LOCALAPPDATA%\Android\sdk
 ```
 
-If you don't want to build the server, use the [prebuilt server].
-
-Clone the project:
-
-```bash
-git clone https://github.com/Genymobile/scrcpy
-cd scrcpy
-```
-
 Then, build:
 
 ```bash
 meson x --buildtype release --strip -Db_lto=true
-ninja -Cx
+ninja -Cx  # DO NOT RUN AS ROOT
 ```
 
 _Note: `ninja` [must][ninja-user] be run as a non-root user (only `ninja
@@ -225,9 +268,27 @@ install` must be run as root)._
 [ninja-user]: https://github.com/Genymobile/scrcpy/commit/4c49b27e9f6be02b8e63b508b60535426bd0291a
 
 
-### Run
+#### Option 2: Use prebuilt server
 
-To run without installing:
+ - [`scrcpy-server-v1.20`][direct-scrcpy-server]  
+   _(SHA-256: b20aee4951f99b060c4a44000ba94de973f9604758ef62beb253b371aad3df34)_
+
+[direct-scrcpy-server]: https://github.com/Genymobile/scrcpy/releases/download/v1.20/scrcpy-server-v1.20
+
+Download the prebuilt server somewhere, and specify its path during the Meson
+configuration:
+
+```bash
+meson x --buildtype release --strip -Db_lto=true \
+    -Dprebuilt_server=/path/to/scrcpy-server
+ninja -Cx  # DO NOT RUN AS ROOT
+```
+
+The server only works with a matching client version (this server works with the
+`master` branch).
+
+
+### Run without installing:
 
 ```bash
 ./run x [options]
@@ -242,32 +303,16 @@ After a successful build, you can install _scrcpy_ on the system:
 sudo ninja -Cx install    # without sudo on Windows
 ```
 
-This installs two files:
+This installs three files:
 
  - `/usr/local/bin/scrcpy`
  - `/usr/local/share/scrcpy/scrcpy-server`
-
-Just remove them to "uninstall" the application.
+ - `/usr/local/share/man/man1/scrcpy.1`
 
 You can then [run](README.md#run) _scrcpy_.
 
-
-## Prebuilt server
-
- - [`scrcpy-server-v1.16`][direct-scrcpy-server]  
-   _(SHA-256: 94a79e05b4498d0460ab7bd9d12cbf05156e3a47bf0c5d1420cee1d4493b3832)_
-
-[direct-scrcpy-server]: https://github.com/Genymobile/scrcpy/releases/download/v1.16/scrcpy-server-v1.16
-
-Download the prebuilt server somewhere, and specify its path during the Meson
-configuration:
+### Uninstall
 
 ```bash
-meson x --buildtype release --strip -Db_lto=true \
-    -Dprebuilt_server=/path/to/scrcpy-server
-ninja -Cx
-sudo ninja -Cx install
+sudo ninja -Cx uninstall  # without sudo on Windows
 ```
-
-The server only works with a matching client version (this server works with the
-`master` branch).

DEVELOP.md

@@ -76,7 +76,7 @@ The server uses 3 threads:
  - the **main** thread, encoding and streaming the video to the client;
  - the **controller** thread, listening for _control messages_ (typically,
    keyboard and mouse events) from the client;
- - the **receiver** thread (managed by the controller), sending _device messges_
+ - the **receiver** thread (managed by the controller), sending _device messages_
    to the clients (currently, it is only used to send the device clipboard
    content).
 
@@ -211,7 +211,7 @@ There are two [frames][video_buffer] simultaneously in memory:
  - the **rendering** frame, rendered in a texture from the main thread.
 
 When a new decoded frame is available, the decoder _swaps_ the decoding and
-rendering frame (with proper synchronization). Thus, it immediatly starts
+rendering frame (with proper synchronization). Thus, it immediately starts
 to decode a new frame while the main thread renders the last one.
 
 If a [recorder] is present (i.e. `--record` is enabled), then it muxes the raw

FAQ.it.md

@@ -0,0 +1,235 @@
+_Apri le [FAQ](FAQ.md) originali e sempre aggiornate._
+
+# Domande Frequenti (FAQ)
+
+Questi sono i problemi più comuni riportati e i loro stati.
+
+
+## Problemi di `adb`
+
+`scrcpy` esegue comandi `adb` per inizializzare la connessione con il dispositivo. Se `adb` fallisce, scrcpy non funzionerà.
+
+In questo caso sarà stampato questo errore:
+
+>     ERROR: "adb push" returned with value 1
+
+Questo solitamente non è un bug di _scrcpy_, ma un problema del tuo ambiente.
+
+Per trovare la causa, esegui:
+
+```bash
+adb devices
+```
+
+### `adb` not found (`adb` non trovato)
+
+È necessario che `adb` sia accessibile dal tuo `PATH`.
+
+In Windows, la cartella corrente è nel tuo `PATH` e `adb.exe` è incluso nella release, perciò dovrebbe già essere pronto all'uso.
+
+
+### Device unauthorized (Dispositivo non autorizzato)
+
+Controlla [stackoverflow][device-unauthorized] (in inglese).
+
+[device-unauthorized]: https://stackoverflow.com/questions/23081263/adb-android-device-unauthorized
+
+
+### Device not detected (Dispositivo non rilevato)
+
+>     adb: error: failed to get feature set: no devices/emulators found
+
+Controlla di aver abilitato correttamente il [debug con adb][enable-adb] (link in inglese).
+
+Se il tuo dispositivo non è rilevato, potresti avere bisogno dei [driver][drivers] (link in inglese) (in Windows).
+
+[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
+[drivers]: https://developer.android.com/studio/run/oem-usb.html
+
+
+### Più dispositivi connessi
+
+Se più dispositivi sono connessi, riscontrerai questo errore:
+
+>     adb: error: failed to get feature set: more than one device/emulator
+
+l'identificatore del tuo dispositivo deve essere fornito:
+
+```bash
+scrcpy -s 01234567890abcdef
+```
+
+Notare che se il tuo dispositivo è connesso mediante TCP/IP, riscontrerai questo messaggio:
+
+>     adb: error: more than one device/emulator
+>     ERROR: "adb reverse" returned with value 1
+>     WARN: 'adb reverse' failed, fallback to 'adb forward'
+
+Questo è un problema atteso (a causa di un bug di una vecchia versione di Android, vedi [#5] (link in inglese)), ma in quel caso scrcpy ripiega su un metodo differente, il quale dovrebbe funzionare.
+
+[#5]: https://github.com/Genymobile/scrcpy/issues/5
+
+
+### Conflitti tra versioni di adb
+
+>     adb server version (41) doesn't match this client (39); killing...
+
+L'errore compare quando usi più versioni di `adb` simultaneamente. Devi trovare il programma che sta utilizzando una versione differente di `adb` e utilizzare la stessa versione dappertutto.
+
+Puoi sovrascrivere i binari di `adb` nell'altro programma, oppure chiedere a _scrcpy_ di usare un binario specifico di `adb`, impostando la variabile d'ambiente `ADB`:
+
+```bash
+set ADB=/path/to/your/adb
+scrcpy
+```
+
+
+### Device disconnected (Dispositivo disconnesso)
+
+Se _scrcpy_ si interrompe con l'avviso "Device disconnected", allora la connessione `adb` è stata chiusa.
+
+Prova con un altro cavo USB o inseriscilo in un'altra porta USB. Vedi [#281] (in inglese) e [#283] (in inglese).
+
+[#281]: https://github.com/Genymobile/scrcpy/issues/281
+[#283]: https://github.com/Genymobile/scrcpy/issues/283
+
+
+
+## Problemi di controllo
+
+### Mouse e tastiera non funzionano
+
+Su alcuni dispositivi potresti dover abilitare un opzione che permette l'[input simulato][simulating input] (link in inglese). Nelle opzioni sviluppatore, abilita:
+
+> **Debug USB (Impostazioni di sicurezza)**
+> _Permetti la concessione dei permessi e la simulazione degli input mediante il debug USB_
+<!--- Ho tradotto personalmente il testo sopra, non conosco esattamente il testo reale --->
+
+[simulating input]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
+
+
+### I caratteri speciali non funzionano
+
+Iniettare del testo in input è [limitato ai caratteri ASCII][text-input] (link in inglese). Un trucco permette di iniettare dei [caratteri accentati][accented-characters] (link in inglese), ma questo è tutto. Vedi [#37] (link in inglese).
+
+[text-input]: https://github.com/Genymobile/scrcpy/issues?q=is%3Aopen+is%3Aissue+label%3Aunicode
+[accented-characters]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-accented-characters
+[#37]: https://github.com/Genymobile/scrcpy/issues/37
+
+
+## Problemi del client
+
+### La qualità è bassa
+
+Se la definizione della finestra del tuo client è minore di quella del tuo dispositivo, allora potresti avere una bassa qualità di visualizzazione, specialmente individuabile nei testi (vedi [#40] (link in inglese)).
+
+[#40]: https://github.com/Genymobile/scrcpy/issues/40
+
+Per migliorare la qualità di ridimensionamento (downscaling), il filtro trilineare è applicato automaticamente se il renderizzatore è OpenGL e se supporta la creazione di mipmap.
+
+In Windows, potresti voler forzare OpenGL:
+
+```
+scrcpy --render-driver=opengl
+```
+
+Potresti anche dover configurare il [comportamento di ridimensionamento][scaling behavior] (link in inglese):
+
+> `scrcpy.exe` > Propietà > Compatibilità > Modifica impostazioni DPI elevati > Esegui l'override del comportamento di ridimensionamento DPI elevati >  Ridimensionamento eseguito per:  _Applicazione_.
+
+[scaling behavior]: https://github.com/Genymobile/scrcpy/issues/40#issuecomment-424466723
+
+
+### Problema con Wayland
+
+Per impostazione predefinita, SDL utilizza x11 su Linux. Il [video driver] può essere cambiato attraversio la variabile d'ambiente `SDL_VIDEODRIVER`:
+
+[video driver]: https://wiki.libsdl.org/FAQUsingSDL#how_do_i_choose_a_specific_video_driver
+
+```bash
+export SDL_VIDEODRIVER=wayland
+scrcpy
+```
+
+Su alcune distribuzioni (almeno Fedora), il pacchetto `libdecor` deve essere installato manualmente.
+
+Vedi le issues [#2554] e [#2559].
+
+[#2554]: https://github.com/Genymobile/scrcpy/issues/2554
+[#2559]: https://github.com/Genymobile/scrcpy/issues/2559
+
+
+### Crash del compositore KWin
+
+In Plasma Desktop, il compositore è disabilitato mentre _scrcpy_ è in esecuzione.
+
+Come soluzione alternativa, [disattiva la "composizione dei blocchi"][kwin] (link in inglese).
+<!--- Non sono sicuro di aver tradotto correttamente la stringa di testo del pulsante --->
+
+[kwin]: https://github.com/Genymobile/scrcpy/issues/114#issuecomment-378778613
+
+
+## Crash
+
+### Eccezione
+
+Ci potrebbero essere molte ragioni. Una causa comune è che il codificatore hardware del tuo dispositivo non riesce a codificare alla definizione selezionata:
+
+> ```
+> ERROR: Exception on thread Thread[main,5,main]
+> android.media.MediaCodec$CodecException: Error 0xfffffc0e
+> ...
+> Exit due to uncaughtException in main thread:
+> ERROR: Could not open video stream
+> INFO: Initial texture: 1080x2336
+> ```
+
+o
+
+> ```
+> ERROR: Exception on thread Thread[main,5,main]
+> java.lang.IllegalStateException
+>         at android.media.MediaCodec.native_dequeueOutputBuffer(Native Method)
+> ```
+
+Prova con una definizione inferiore:
+
+```
+scrcpy -m 1920
+scrcpy -m 1024
+scrcpy -m 800
+```
+
+Potresti anche provare un altro [codificatore](README.it.md#codificatore).
+
+
+## Linea di comando in Windows
+
+Alcuni utenti Windows non sono familiari con la riga di comando. Qui è descritto come aprire un terminale ed eseguire `scrcpy` con gli argomenti:
+
+ 1. Premi <kbd>Windows</kbd>+<kbd>r</kbd>, questo apre una finestra di dialogo.
+ 2. Scrivi `cmd` e premi <kbd>Enter</kbd>, questo apre un terminale.
+ 3. Vai nella tua cartella di _scrcpy_ scrivendo (adatta il percorso):
+
+    ```bat
+    cd C:\Users\user\Downloads\scrcpy-win64-xxx
+    ```
+
+    e premi <kbd>Enter</kbd>
+ 4. Scrivi il tuo comando. Per esempio:
+
+    ```bat
+    scrcpy --record file.mkv
+    ```
+
+Se pianifichi di utilizzare sempre gli stessi argomenti, crea un file `myscrcpy.bat` (abilita mostra [estensioni nomi file][show file extensions] per evitare di far confusione) contenente il tuo comando nella cartella di `scrcpy`. Per esempio:
+
+```bat
+scrcpy --prefer-text --turn-screen-off --stay-awake
+```
+
+Poi fai doppio click su quel file.
+
+Potresti anche modificare (una copia di) `scrcpy-console.bat` o `scrcpy-noconsole.vbs` per aggiungere alcuni argomenti.
+
+[show file extensions]: https://www.techpedia.it/14-windows/windows-10/171-visualizzare-le-estensioni-nomi-file-con-windows-10

FAQ.md

@@ -1,5 +1,7 @@
 # Frequently Asked Questions
 
+[Read in another language](#translations)
+
 Here are the common reported problems and their status.
 
 
@@ -39,8 +41,11 @@ Check [stackoverflow][device-unauthorized].
 
 >     adb: error: failed to get feature set: no devices/emulators found
 
+Check that you correctly enabled [adb debugging][enable-adb].
+
 If your device is not detected, you may need some [drivers] (on Windows).
 
+[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
 [drivers]: https://developer.android.com/studio/run/oem-usb.html
 
 
@@ -111,25 +116,19 @@ In developer options, enable:
 [simulating input]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
 
 
-### Mouse clicks at wrong location
-
-On MacOS, with HiDPI support and multiple screens, input location are wrongly
-scaled. See [#15].
-
-[#15]: https://github.com/Genymobile/scrcpy/issues/15
-
-Open _scrcpy_ directly on the monitor you use it.
-
-
 ### Special characters do not work
 
-Injecting text input is [limited to ASCII characters][text-input]. A trick
-allows to also inject some [accented characters][accented-characters], but
-that's all. See [#37].
+The default text injection method is [limited to ASCII characters][text-input].
+A trick allows to also inject some [accented characters][accented-characters],
+but that's all. See [#37].
+
+Since scrcpy v1.20 on Linux, it is possible to simulate a [physical
+keyboard][hid] (HID).
 
 [text-input]: https://github.com/Genymobile/scrcpy/issues?q=is%3Aopen+is%3Aissue+label%3Aunicode
 [accented-characters]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-accented-characters
 [#37]: https://github.com/Genymobile/scrcpy/issues/37
+[hid]: README.md#physical-keyboard-simulation-hid
 
 
 ## Client issues
@@ -158,6 +157,26 @@ You may also need to configure the [scaling behavior]:
 [scaling behavior]: https://github.com/Genymobile/scrcpy/issues/40#issuecomment-424466723
 
 
+### Issue with Wayland
+
+By default, SDL uses x11 on Linux. The [video driver] can be changed via the
+`SDL_VIDEODRIVER` environment variable:
+
+[video driver]: https://wiki.libsdl.org/FAQUsingSDL#how_do_i_choose_a_specific_video_driver
+
+```bash
+export SDL_VIDEODRIVER=wayland
+scrcpy
+```
+
+On some distributions (at least Fedora), the package `libdecor` must be
+installed manually.
+
+See issues [#2554] and [#2559].
+
+[#2554]: https://github.com/Genymobile/scrcpy/issues/2554
+[#2559]: https://github.com/Genymobile/scrcpy/issues/2559
+
 
 ### KWin compositor crashes
 
@@ -201,3 +220,69 @@ scrcpy -m 800
 ```
 
 You could also try another [encoder](README.md#encoder).
+
+
+If you encounter this exception on Android 12, then just upgrade to scrcpy >=
+1.18 (see [#2129]):
+
+```
+> ERROR: Exception on thread Thread[main,5,main]
+java.lang.AssertionError: java.lang.reflect.InvocationTargetException
+    at com.genymobile.scrcpy.wrappers.SurfaceControl.setDisplaySurface(SurfaceControl.java:75)
+    ...
+Caused by: java.lang.reflect.InvocationTargetException
+    at java.lang.reflect.Method.invoke(Native Method)
+    at com.genymobile.scrcpy.wrappers.SurfaceControl.setDisplaySurface(SurfaceControl.java:73)
+    ... 7 more
+Caused by: java.lang.IllegalArgumentException: displayToken must not be null
+    at android.view.SurfaceControl$Transaction.setDisplaySurface(SurfaceControl.java:3067)
+    at android.view.SurfaceControl.setDisplaySurface(SurfaceControl.java:2147)
+    ... 9 more
+```
+
+[#2129]: https://github.com/Genymobile/scrcpy/issues/2129
+
+
+## Command line on Windows
+
+Some Windows users are not familiar with the command line. Here is how to open a
+terminal and run `scrcpy` with arguments:
+
+ 1. Press <kbd>Windows</kbd>+<kbd>r</kbd>, this opens a dialog box.
+ 2. Type `cmd` and press <kbd>Enter</kbd>, this opens a terminal.
+ 3. Go to your _scrcpy_ directory, by typing (adapt the path):
+
+    ```bat
+    cd C:\Users\user\Downloads\scrcpy-win64-xxx
+    ```
+
+    and press <kbd>Enter</kbd>
+ 4. Type your command. For example:
+
+    ```bat
+    scrcpy --record file.mkv
+    ```
+
+If you plan to always use the same arguments, create a file `myscrcpy.bat`
+(enable [show file extensions] to avoid confusion) in the `scrcpy` directory,
+containing your command. For example:
+
+```bat
+scrcpy --prefer-text --turn-screen-off --stay-awake
+```
+
+Then just double-click on that file.
+
+You could also edit (a copy of) `scrcpy-console.bat` or `scrcpy-noconsole.vbs`
+to add some arguments.
+
+[show file extensions]: https://www.howtogeek.com/205086/beginner-how-to-make-windows-show-file-extensions/
+
+
+## Translations
+
+This FAQ is available in other languages:
+
+ - [Italiano (Italiano, `it`) - v1.19](FAQ.it.md)
+ - [한국어 (Korean, `ko`) - v1.11](FAQ.ko.md)
+ - [简体中文 (Simplified Chinese, `zh-Hans`) - v1.18](FAQ.zh-Hans.md)

FAQ.zh-Hans.md

@@ -0,0 +1,240 @@
+只有原版的[FAQ](FAQ.md)会保持更新。
+本文根据[d6aaa5]翻译。
+
+[d6aaa5]:https://github.com/Genymobile/scrcpy/blob/d6aaa5bf9aa3710660c683b6e3e0ed971ee44af5/FAQ.md
+
+# 常见问题
+
+这里是一些常见的问题以及他们的状态。
+
+## `adb` 相关问题
+
+`scrcpy` 执行 `adb` 命令来初始化和设备之间的连接。如果`adb` 执行失败了， scrcpy 就无法工作。
+
+在这种情况中，将会输出这个错误:
+
+>     ERROR: "adb push" returned with value 1
+
+这通常不是 _scrcpy_ 的bug，而是你的环境的问题。
+
+要找出原因，请执行以下操作：
+
+```bash
+adb devices
+```
+
+### 找不到`adb`
+
+
+你的`PATH`中需要能访问到`adb`。
+
+在Windows上，当前目录会包含在`PATH`中，并且`adb.exe`也包含在发行版中，因此它应该是开箱即用（直接解压就可以）的。
+
+
+### 设备未授权
+
+参见这里 [stackoverflow][device-unauthorized].
+
+[device-unauthorized]: https://stackoverflow.com/questions/23081263/adb-android-device-unauthorized
+
+
+### 未检测到设备
+
+>     adb: error: failed to get feature set: no devices/emulators found
+
+确认已经正确启用 [adb debugging][enable-adb].
+
+如果你的设备没有被检测到，你可能需要一些[驱动][drivers] (在 Windows上).
+
+[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
+[drivers]: https://developer.android.com/studio/run/oem-usb.html
+
+
+### 已连接多个设备
+
+如果连接了多个设备，您将遇到以下错误：
+
+>     adb: error: failed to get feature set: more than one device/emulator
+
+必须提供要镜像的设备的标识符：
+
+```bash
+scrcpy -s 01234567890abcdef
+```
+
+注意，如果你的设备是通过 TCP/IP 连接的， 你将会收到以下消息：
+
+>     adb: error: more than one device/emulator
+>     ERROR: "adb reverse" returned with value 1
+>     WARN: 'adb reverse' failed, fallback to 'adb forward'
+
+这是意料之中的 (由于旧版安卓的一个bug, 请参见 [#5])，但是在这种情况下，scrcpy会退回到另一种方法，这种方法应该可以起作用。
+
+[#5]: https://github.com/Genymobile/scrcpy/issues/5
+
+
+### adb版本之间冲突
+
+>     adb server version (41) doesn't match this client (39); killing...
+
+同时使用多个版本的`adb`时会发生此错误。你必须查找使用不同`adb`版本的程序，并在所有地方使用相同版本的`adb`。
+
+你可以覆盖另一个程序中的`adb`二进制文件，或者通过设置`ADB`环境变量来让 _scrcpy_ 使用特定的`adb`二进制文件。
+
+```bash
+set ADB=/path/to/your/adb
+scrcpy
+```
+
+
+### 设备断开连接
+
+如果 _scrcpy_ 在警告“设备连接断开”的情况下自动中止，那就意味着`adb`连接已经断开了。
+请尝试使用另一条USB线或者电脑上的另一个USB接口。
+请参看 [#281] 和 [#283]。
+
+[#281]: https://github.com/Genymobile/scrcpy/issues/281
+[#283]: https://github.com/Genymobile/scrcpy/issues/283
+
+## 控制相关问题
+
+### 鼠标和键盘不起作用
+
+
+在某些设备上，您可能需要启用一个选项以允许 [模拟输入][simulating input]。
+
+在开发者选项中，打开：
+
+> **USB调试 (安全设置)**  
+> _允许通过USB调试修改权限或模拟点击_
+
+[simulating input]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
+
+
+### 特殊字符不起作用
+
+可输入的文本[被限制为ASCII字符][text-input]。也可以用一些小技巧输入一些[带重音符号的字符][accented-characters]，但是仅此而已。参见[#37]。
+
+
+[text-input]: https://github.com/Genymobile/scrcpy/issues?q=is%3Aopen+is%3Aissue+label%3Aunicode
+[accented-characters]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-accented-characters
+[#37]: https://github.com/Genymobile/scrcpy/issues/37
+
+
+## 客户端相关问题
+
+### 效果很差
+
+如果你的客户端窗口分辨率比你的设备屏幕小，则可能出现效果差的问题，尤其是在文本上（参见 [#40]）。
+
+[#40]: https://github.com/Genymobile/scrcpy/issues/40
+
+
+为了提升降尺度的质量，如果渲染器是OpenGL并且支持mip映射，就会自动开启三线性过滤。
+
+在Windows上，你可能希望强制使用OpenGL：
+
+```
+scrcpy --render-driver=opengl
+```
+
+你可能还需要配置[缩放行为][scaling behavior]：
+
+> `scrcpy.exe` > Properties > Compatibility > Change high DPI settings >
+> Override high DPI scaling behavior > Scaling performed by: _Application_.
+
+[scaling behavior]: https://github.com/Genymobile/scrcpy/issues/40#issuecomment-424466723
+
+
+### Wayland相关的问题
+
+在Linux上，SDL默认使用x11。可以通过`SDL_VIDEODRIVER`环境变量来更改[视频驱动][video driver]：
+
+[video driver]: https://wiki.libsdl.org/FAQUsingSDL#how_do_i_choose_a_specific_video_driver
+
+```bash
+export SDL_VIDEODRIVER=wayland
+scrcpy
+```
+
+在一些发行版上 (至少包括 Fedora)， `libdecor` 包必须手动安装。
+
+参见 [#2554] 和 [#2559]。
+
+[#2554]: https://github.com/Genymobile/scrcpy/issues/2554
+[#2559]: https://github.com/Genymobile/scrcpy/issues/2559
+
+
+### KWin compositor 崩溃
+
+在Plasma桌面中，当 _scrcpy_ 运行时，会禁用compositor。
+
+一种解决方法是， [禁用 "Block compositing"][kwin].
+
+[kwin]: https://github.com/Genymobile/scrcpy/issues/114#issuecomment-378778613
+
+
+## 崩溃
+
+### 异常
+可能有很多原因。一个常见的原因是您的设备无法按给定清晰度进行编码：
+
+> ```
+> ERROR: Exception on thread Thread[main,5,main]
+> android.media.MediaCodec$CodecException: Error 0xfffffc0e
+> ...
+> Exit due to uncaughtException in main thread:
+> ERROR: Could not open video stream
+> INFO: Initial texture: 1080x2336
+> ```
+
+或者
+
+> ```
+> ERROR: Exception on thread Thread[main,5,main]
+> java.lang.IllegalStateException
+>         at android.media.MediaCodec.native_dequeueOutputBuffer(Native Method)
+> ```
+
+请尝试使用更低的清晰度：
+
+```
+scrcpy -m 1920
+scrcpy -m 1024
+scrcpy -m 800
+```
+
+你也可以尝试另一种 [编码器](README.md#encoder)。
+
+
+## Windows命令行
+
+一些Windows用户不熟悉命令行。以下是如何打开终端并带参数执行`scrcpy`：
+
+ 1. 按下 <kbd>Windows</kbd>+<kbd>r</kbd>，打开一个对话框。
+ 2. 输入 `cmd` 并按 <kbd>Enter</kbd>，这样就打开了一个终端。
+ 3. 通过输入以下命令，切换到你的 _scrcpy_ 所在的目录 （根据你的实际位置修改路径）:
+
+    ```bat
+    cd C:\Users\user\Downloads\scrcpy-win64-xxx
+    ```
+
+    然后按 <kbd>Enter</kbd>
+ 4. 输入你的命令。比如:
+
+    ```bat
+    scrcpy --record file.mkv
+    ```
+
+如果你打算总是使用相同的参数，在`scrcpy`目录创建一个文件 `myscrcpy.bat`
+（启用 [显示文件拓展名][show file extensions] 避免混淆），文件中包含你的命令。例如：
+
+```bat
+scrcpy --prefer-text --turn-screen-off --stay-awake
+```
+
+然后双击刚刚创建的文件。
+
+你也可以编辑 `scrcpy-console.bat` 或者 `scrcpy-noconsole.vbs`（的副本）来添加参数。
+
+[show file extensions]: https://www.howtogeek.com/205086/beginner-how-to-make-windows-show-file-extensions/

LICENSE

@@ -188,7 +188,7 @@
       identification within third-party archives.
 
    Copyright (C) 2018 Genymobile
-   Copyright (C) 2018-2020 Romain Vimont
+   Copyright (C) 2018-2021 Romain Vimont
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

README.id.md

@@ -69,10 +69,7 @@ Anda juga bisa [membangun aplikasi secara manual][BUILD] (jangan khawatir, tidak
 
 Untuk Windows, untuk kesederhanaan, arsip prebuilt dengan semua dependensi (termasuk `adb`) tersedia :
 
- - [`scrcpy-win64-v1.16.zip`][direct-win64]  
-   _(SHA-256: 3f30dc5db1a2f95c2b40a0f5de91ec1642d9f53799250a8c529bc882bc0918f0)_
-
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.16/scrcpy-win64-v1.16.zip
+ - [README](README.md#windows)
 
 Ini juga tersedia di [Chocolatey]:
 
@@ -675,7 +672,7 @@ Baca [halaman pengembang].
 ## Lisensi
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2020 Romain Vimont
+    Copyright (C) 2018-2021 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.it.md

@@ -0,0 +1,813 @@
+_Apri il [README](README.md) originale e sempre aggiornato._
+
+# scrcpy (v1.19)
+
+Questa applicazione fornisce la visualizzazione e il controllo dei dispositivi Android collegati via USB (o [via TCP/IP][article-tcpip]). Non richiede alcun accesso _root_.
+Funziona su _GNU/Linux_, _Windows_ e _macOS_.
+
+![screenshot](assets/screenshot-debian-600.jpg)
+
+Si concentra su:
+
+ - **leggerezza** (nativo, mostra solo lo schermo del dispositivo)
+ - **prestazioni** (30~60fps)
+ - **qualità** (1920×1080 o superiore)
+ - **bassa latenza** ([35~70ms][lowlatency])
+ - **tempo di avvio basso** (~ 1secondo per visualizzare la prima immagine)
+ - **non invadenza** (nulla viene lasciato installato sul dispositivo)
+
+[lowlatency]: https://github.com/Genymobile/scrcpy/pull/646
+
+
+## Requisiti
+
+Il dispositivo Android richiede almeno le API 21 (Android 5.0).
+
+Assiucurati di aver [attivato il debug usb][enable-adb] sul(/i) tuo(i) dispositivo(/i).
+
+[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
+
+In alcuni dispositivi, devi anche abilitare [un'opzione aggiuntiva][control] per controllarli con tastiera e mouse.
+
+[control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
+
+## Ottieni l'app
+
+<a href="https://repology.org/project/scrcpy/versions"><img src="https://repology.org/badge/vertical-allrepos/scrcpy.svg" alt="Packaging status" align="right"></a>
+
+### Sommario
+
+ - Linux: `apt install scrcpy`
+ - Windows: [download](README.md#windows)
+ - macOS: `brew install scrcpy`
+
+Compila dai sorgenti: [BUILD] (in inglese) ([procedimento semplificato][BUILD_simple] (in inglese))
+
+[BUILD]: BUILD.md
+[BUILD_simple]: BUILD.md#simple
+
+
+### Linux
+
+Su Debian (_testing_ e _sid_ per ora) e Ubuntu (20.04):
+
+```
+apt install scrcpy
+```
+
+È disponibile anche un pacchetto [Snap]: [`scrcpy`][snap-link].
+
+[snap-link]: https://snapstats.org/snaps/scrcpy
+
+[snap]: https://it.wikipedia.org/wiki/Snappy_(gestore_pacchetti)
+
+Per Fedora, è disponibile un pacchetto [COPR]: [`scrcpy`][copr-link].
+
+[COPR]: https://fedoraproject.org/wiki/Category:Copr
+[copr-link]: https://copr.fedorainfracloud.org/coprs/zeno/scrcpy/
+
+Per Arch Linux, è disponibile un pacchetto [AUR]: [`scrcpy`][aur-link].
+
+[AUR]: https://wiki.archlinux.org/index.php/Arch_User_Repository
+[aur-link]: https://aur.archlinux.org/packages/scrcpy/
+
+Per Gentoo, è disponibile una [Ebuild]: [`scrcpy/`][ebuild-link].
+
+[Ebuild]: https://wiki.gentoo.org/wiki/Ebuild
+[ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy
+
+Puoi anche [compilare l'app manualmente][BUILD] (in inglese) ([procedimento semplificato][BUILD_simple] (in inglese)).
+
+
+### Windows
+
+Per Windows, per semplicità è disponibile un archivio precompilato con tutte le dipendenze (incluso `adb`):
+
+ - [README](README.md#windows) (Link al README originale per l'ultima versione)
+
+È anche disponibile in [Chocolatey]:
+
+[Chocolatey]: https://chocolatey.org/
+
+```bash
+choco install scrcpy
+choco install adb    # se non lo hai già
+```
+
+E in [Scoop]:
+
+```bash
+scoop install scrcpy
+scoop install adb    # se non lo hai già
+```
+
+[Scoop]: https://scoop.sh
+
+Puoi anche [compilare l'app manualmente][BUILD] (in inglese).
+
+
+### macOS
+
+L'applicazione è disponibile in [Homebrew]. Basta installarlo:
+
+[Homebrew]: https://brew.sh/
+
+```bash
+brew install scrcpy
+```
+
+Serve che `adb` sia accessibile dal tuo `PATH`. Se non lo hai già:
+
+```bash
+brew install android-platform-tools
+```
+
+È anche disponibile in [MacPorts], che imposta adb per te:
+
+```bash
+sudo port install scrcpy
+```
+
+[MacPorts]: https://www.macports.org/
+
+
+Puoi anche [compilare l'app manualmente][BUILD] (in inglese).
+
+
+## Esecuzione
+
+Collega un dispositivo Android ed esegui:
+
+```bash
+scrcpy
+```
+
+Scrcpy accetta argomenti da riga di comando, essi sono listati con:
+
+```bash
+scrcpy --help
+```
+
+## Funzionalità
+
+### Configurazione di acquisizione
+
+#### Riduci dimensione
+
+Qualche volta è utile trasmettere un dispositvo Android ad una definizione inferiore per aumentare le prestazioni.
+
+Per limitare sia larghezza che altezza ad un certo valore (ad es. 1024):
+
+```bash
+scrcpy --max-size 1024
+scrcpy -m 1024  # versione breve
+```
+
+L'altra dimensione è calcolata in modo tale che il rapporto di forma del dispositivo sia preservato.
+In questo esempio un dispositivo in 1920x1080 viene trasmesso a 1024x576.
+
+
+#### Cambia bit-rate (velocità di trasmissione)
+
+Il bit-rate predefinito è 8 Mbps. Per cambiare il bitrate video (ad es. a 2 Mbps):
+
+```bash
+scrcpy --bit-rate 2M
+scrcpy -b 2M  # versione breve
+```
+
+#### Limitare il frame rate (frequenza di fotogrammi)
+
+Il frame rate di acquisizione può essere limitato:
+
+```bash
+scrcpy --max-fps 15
+```
+
+Questo è supportato ufficialmente a partire da Android 10, ma potrebbe funzionare in versioni precedenti.
+
+#### Ritaglio
+
+Lo schermo del dispositivo può essere ritagliato per visualizzare solo parte di esso.
+
+Questo può essere utile, per esempio, per trasmettere solo un occhio dell'Oculus Go:
+
+```bash
+scrcpy --crop 1224:1440:0:0   # 1224x1440 at offset (0,0)
+```
+
+Se anche `--max-size` è specificata, il ridimensionamento è applicato dopo il ritaglio.
+
+
+#### Blocca orientamento del video
+
+
+Per bloccare l'orientamento della trasmissione:
+
+```bash
+scrcpy --lock-video-orientation     # orientamento iniziale (corrente)
+scrcpy --lock-video-orientation=0   # orientamento naturale
+scrcpy --lock-video-orientation=1   # 90° antiorario
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 90° orario
+```
+
+Questo influisce sull'orientamento della registrazione.
+
+
+La [finestra può anche essere ruotata](#rotazione) indipendentemente.
+
+
+#### Codificatore
+
+Alcuni dispositivi hanno più di un codificatore e alcuni di questi possono provocare problemi o crash. È possibile selezionare un encoder diverso:
+
+```bash
+scrcpy --encoder OMX.qcom.video.encoder.avc
+```
+
+Per elencare i codificatori disponibili puoi immettere un nome di codificatore non valido e l'errore mostrerà i codificatori disponibili:
+
+```bash
+scrcpy --encoder _
+```
+
+### Cattura
+
+#### Registrazione
+
+È possibile registrare lo schermo durante la trasmissione:
+
+```bash
+scrcpy --record file.mp4
+scrcpy -r file.mkv
+```
+
+Per disabilitare la trasmissione durante la registrazione:
+
+```bash
+scrcpy --no-display --record file.mp4
+scrcpy -Nr file.mkv
+# interrompere la registrazione con Ctrl+C
+```
+
+I "fotogrammi saltati" sono registrati nonostante non siano mostrati in tempo reale (per motivi di prestazioni). I fotogrammi sono _datati_ sul dispositivo, così una [variazione di latenza dei pacchetti][packet delay variation] non impatta il file registrato.
+
+[packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
+
+
+#### v4l2loopback
+
+Su Linux è possibile inviare il flusso video ad un dispositivo v4l2 loopback, cosicchè un dispositivo Android possa essere aperto come una webcam da qualsiasi strumento compatibile con v4l2.
+
+Il modulo `v4l2loopback` deve essere installato:
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+Per creare un dispositvo v4l2:
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+Questo creerà un nuovo dispositivo video in `/dev/videoN` dove `N` è un intero (più [opzioni](https://github.com/umlaeute/v4l2loopback#options) sono disponibili per crere più dispositivi o dispositivi con ID specifici).
+
+Per elencare i dispositvi attivati:
+
+```bash
+# necessita del pacchetto v4l-utils
+v4l2-ctl --list-devices
+
+# semplice ma potrebbe essere sufficiente
+ls /dev/video*
+```
+
+Per avviare scrcpy utilizzando un v4l2 sink:
+
+```bash
+scrcpy --v4l2-sink=/dev/videoN
+scrcpy --v4l2-sink=/dev/videoN --no-display  # disabilita la finestra di trasmissione
+scrcpy --v4l2-sink=/dev/videoN -N            # versione corta
+```
+
+(sostituisci `N` con l'ID del dispositivo, controlla con `ls /dev/video*`)
+
+Una volta abilitato, puoi aprire il tuo flusso video con uno strumento compatibile con v4l2:
+
+```bash
+ffplay -i /dev/videoN
+vlc v4l2:///dev/videoN   # VLC potrebbe aggiungere del ritardo per il buffer
+```
+
+Per esempio potresti catturare il video in [OBS].
+
+[OBS]: https://obsproject.com/
+
+
+#### Buffering
+
+È possibile aggiungere del buffer. Questo aumenta la latenza ma riduce il jitter (vedi [#2464]).
+
+[#2464]: https://github.com/Genymobile/scrcpy/issues/2464
+
+L'opzione è disponibile per il buffer della visualizzazione:
+
+```bash
+scrcpy --display-buffer=50  # aggiungi 50 ms di buffer per la visualizzazione
+```
+
+e per il V4L2 sink:
+
+```bash
+scrcpy --v4l2-buffer=500    #  aggiungi 50 ms di buffer per il v4l2 sink
+```
+
+
+### Connessione
+
+#### Wireless
+
+
+_Scrcpy_ usa `adb` per comunicare col dispositivo e `adb` può [connettersi][connect] al dispositivo mediante TCP/IP:
+
+1. Connetti il dispositivo alla stessa rete Wi-Fi del tuo computer.
+2. Trova l'indirizzo IP del tuo dispositivo in Impostazioni → Informazioni sul telefono → Stato, oppure   eseguendo questo comando:
+
+    ```bash
+    adb shell ip route | awk '{print $9}'
+    ```
+
+3. Abilita adb via TCP/IP sul tuo dispositivo: `adb tcpip 5555`.
+4. Scollega il tuo dispositivo.
+5. Connetti il tuo dispositivo: `adb connect IP_DISPOSITVO:5555` _(rimpiazza `IP_DISPOSITIVO`)_.
+6. Esegui `scrcpy` come al solito.
+
+Potrebbe essere utile diminuire il bit-rate e la definizione
+
+```bash
+scrcpy --bit-rate 2M --max-size 800
+scrcpy -b2M -m800  # versione breve
+```
+
+[connect]: https://developer.android.com/studio/command-line/adb.html#wireless
+
+
+#### Multi dispositivo
+
+Se in `adb devices` sono listati più dispositivi, è necessario specificare il _seriale_:
+
+```bash
+scrcpy --serial 0123456789abcdef
+scrcpy -s 0123456789abcdef  # versione breve
+```
+
+Se il dispositivo è collegato mediante TCP/IP:
+
+```bash
+scrcpy --serial 192.168.0.1:5555
+scrcpy -s 192.168.0.1:5555  # versione breve
+```
+
+Puoi avviare più istanze di _scrcpy_ per diversi dispositivi.
+
+
+#### Avvio automativo alla connessione del dispositivo
+
+Potresti usare [AutoAdb]:
+
+```bash
+autoadb scrcpy -s '{}'
+```
+
+[AutoAdb]: https://github.com/rom1v/autoadb
+
+#### Tunnel SSH
+
+Per connettersi a un dispositivo remoto è possibile collegare un client `adb` locale ad un server `adb` remoto (assunto che entrambi stiano usando la stessa versione del protocollo _adb_):
+
+```bash
+adb kill-server    # termina il server adb locale su 5037
+ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
+# tieni questo aperto
+```
+
+Da un altro terminale:
+
+```bash
+scrcpy
+```
+
+Per evitare l'abilitazione dell'apertura porte remota potresti invece forzare una "forward connection" (notare il `-L` invece di `-R`)
+
+```bash
+adb kill-server    # termina il server adb locale su 5037
+ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
+# tieni questo aperto
+```
+
+Da un altro terminale:
+
+```bash
+scrcpy --force-adb-forward
+```
+
+
+Come per le connessioni wireless potrebbe essere utile ridurre la qualità:
+
+```
+scrcpy -b2M -m800 --max-fps 15
+```
+
+### Configurazione della finestra
+
+#### Titolo
+
+Il titolo della finestra è il modello del dispositivo per impostazione predefinita. Esso può essere cambiato:
+
+```bash
+scrcpy --window-title 'My device'
+```
+
+#### Posizione e dimensione
+
+La posizione e la dimensione iniziale della finestra può essere specificata:
+
+```bash
+scrcpy --window-x 100 --window-y 100 --window-width 800 --window-height 600
+```
+
+#### Senza bordi
+
+Per disabilitare le decorazioni della finestra:
+
+```bash
+scrcpy --window-borderless
+```
+
+#### Sempre in primo piano
+
+Per tenere scrcpy sempre in primo piano:
+
+```bash
+scrcpy --always-on-top
+```
+
+#### Schermo intero
+
+L'app può essere avviata direttamente a schermo intero:
+
+```bash
+scrcpy --fullscreen
+scrcpy -f  # versione breve
+```
+
+Lo schermo intero può anche essere attivato/disattivato con <kbd>MOD</kbd>+<kbd>f</kbd>.
+
+#### Rotazione
+
+La finestra può essere ruotata:
+
+```bash
+scrcpy --rotation 1
+```
+
+I valori possibili sono:
+ - `0`: nessuna rotazione
+ - `1`: 90 gradi antiorari
+ - `2`: 180 gradi
+ - `3`: 90 gradi orari
+
+La rotazione può anche essere cambiata dinamicamente con <kbd>MOD</kbd>+<kbd>←</kbd>
+_(sinistra)_ e <kbd>MOD</kbd>+<kbd>→</kbd> _(destra)_.
+
+Notare che _scrcpy_ gestisce 3 diversi tipi di rotazione:
+ - <kbd>MOD</kbd>+<kbd>r</kbd> richiede al dispositvo di cambiare tra orientamento verticale (portrait) e orizzontale (landscape) (l'app in uso potrebbe rifiutarsi se non supporta l'orientamento richiesto).
+ - [`--lock-video-orientation`](#blocca-orientamento-del-video) cambia l'orientamento della trasmissione (l'orientamento del video inviato dal dispositivo al computer). Questo influenza la registrazione.
+ - `--rotation` (o <kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>) ruota solo il contenuto della finestra. Questo influenza solo la visualizzazione, non la registrazione.
+
+
+### Altre opzioni di trasmissione
+
+#### "Sola lettura"
+
+Per disabilitare i controlli (tutto ciò che può interagire col dispositivo: tasti di input, eventi del mouse, trascina e rilascia (drag&drop) file):
+
+```bash
+scrcpy --no-control
+scrcpy -n
+```
+
+#### Schermo
+
+Se sono disponibili più schermi, è possibile selezionare lo schermo da trasmettere:
+
+```bash
+scrcpy --display 1
+```
+
+La lista degli id schermo può essere ricavata da:
+
+```bash
+adb shell dumpsys display   # cerca "mDisplayId=" nell'output
+```
+
+Lo schermo secondario potrebbe essere possibile controllarlo solo se il dispositivo esegue almeno Android 10 (in caso contrario è trasmesso in modalità sola lettura).
+
+
+#### Mantenere sbloccato
+
+Per evitare che il dispositivo si blocchi dopo un po' che il dispositivo è collegato:
+
+```bash
+scrcpy --stay-awake
+scrcpy -w
+```
+
+Lo stato iniziale è ripristinato quando scrcpy viene chiuso.
+
+
+#### Spegnere lo schermo
+
+È possibile spegnere lo schermo del dispositivo durante la trasmissione con un'opzione da riga di comando:
+
+```bash
+scrcpy --turn-screen-off
+scrcpy -S
+```
+
+Oppure premendo <kbd>MOD</kbd>+<kbd>o</kbd> in qualsiasi momento.
+
+Per riaccenderlo premere <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>.
+
+In Android il pulsante `POWER` (tasto di accensione) accende sempre lo schermo. Per comodità, se `POWER` è inviato via scrcpy (con click destro o con <kbd>MOD</kbd>+<kbd>p</kbd>), si forza il dispositivo a spegnere lo schermo dopo un piccolo ritardo (appena possibile).
+Il pulsante fisico `POWER` continuerà ad accendere lo schermo normalmente.
+
+Può anche essere utile evitare il blocco del dispositivo:
+
+```bash
+scrcpy --turn-screen-off --stay-awake
+scrcpy -Sw
+```
+
+
+#### Mostrare i tocchi
+
+Per le presentazioni può essere utile mostrare i tocchi fisici (sul dispositivo fisico).
+
+Android fornisce questa funzionalità nelle _Opzioni sviluppatore_.
+
+_Scrcpy_ fornisce un'opzione per abilitare questa funzionalità all'avvio e ripristinare il valore iniziale alla chiusura:
+
+```bash
+scrcpy --show-touches
+scrcpy -t
+```
+
+Notare che mostra solo i tocchi _fisici_ (con le dita sul dispositivo).
+
+
+#### Disabilitare il salvaschermo
+
+In maniera predefinita scrcpy non previene l'attivazione del salvaschermo del computer.
+
+Per disabilitarlo:
+
+```bash
+scrcpy --disable-screensaver
+```
+
+
+### Input di controlli
+
+#### Rotazione dello schermo del dispostivo
+
+Premere <kbd>MOD</kbd>+<kbd>r</kbd> per cambiare tra le modalità verticale (portrait) e orizzontale (landscape).
+
+Notare che la rotazione avviene solo se l'applicazione in primo piano supporta l'orientamento richiesto.
+
+#### Copia-incolla
+
+Quando gli appunti di Android cambiano, essi vengono automaticamente sincronizzati con gli appunti del computer.
+
+Qualsiasi scorciatoia <kbd>Ctrl</kbd> viene inoltrata al dispositivo. In particolare:
+ - <kbd>Ctrl</kbd>+<kbd>c</kbd> copia
+ - <kbd>Ctrl</kbd>+<kbd>x</kbd> taglia
+ - <kbd>Ctrl</kbd>+<kbd>v</kbd> incolla (dopo la sincronizzazione degli appunti da computer a dispositivo)
+
+Questo solitamente funziona nella maniera più comune.
+
+Il comportamento reale, però, dipende dall'applicazione attiva. Per esempio _Termux_ invia SIGINT con <kbd>Ctrl</kbd>+<kbd>c</kbd>, e _K-9 Mail_ compone un nuovo messaggio.
+
+Per copiare, tagliare e incollare in questi casi (ma è solo supportato in Android >= 7):
+ - <kbd>MOD</kbd>+<kbd>c</kbd> inietta `COPY`
+ - <kbd>MOD</kbd>+<kbd>x</kbd> inietta `CUT`
+ - <kbd>MOD</kbd>+<kbd>v</kbd> inietta `PASTE` (dopo la sincronizzazione degli appunti da computer a dispositivo)
+
+In aggiunta, <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> permette l'iniezione del testo degli appunti del computer come una sequenza di eventi pressione dei tasti. Questo è utile quando il componente non accetta l'incollaggio di testo (per esempio in _Termux_), ma questo può rompere il contenuto non ASCII.
+
+**AVVISO:** Incollare gli appunti del computer nel dispositivo (sia con <kbd>Ctrl</kbd>+<kbd>v</kbd> che con <kbd>MOD</kbd>+<kbd>v</kbd>) copia il contenuto negli appunti del dispositivo. Come conseguenza, qualsiasi applicazione Android potrebbe leggere il suo contenuto. Dovresti evitare di incollare contenuti sensibili (come password) in questa maniera.
+
+Alcuni dispositivi non si comportano come aspettato quando si modificano gli appunti del dispositivo a livello di codice. L'opzione `--legacy-paste` è fornita per cambiare il comportamento di <kbd>Ctrl</kbd>+<kbd>v</kbd> and <kbd>MOD</kbd>+<kbd>v</kbd> in modo tale che anch'essi iniettino il testo gli appunti del computer come una sequenza di eventi pressione dei tasti (nella stessa maniera di <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>).
+
+#### Pizzica per zoomare (pinch-to-zoom)
+
+Per simulare il "pizzica per zoomare": <kbd>Ctrl</kbd>+_click e trascina_.
+
+Più precisamente, tieni premuto <kbd>Ctrl</kbd> mentre premi il pulsante sinistro. Finchè il pulsante non sarà rilasciato, tutti i movimenti del mouse ridimensioneranno e ruoteranno il contenuto (se supportato dall'applicazione) relativamente al centro dello schermo.
+
+Concretamente scrcpy genera degli eventi di tocco addizionali di un "dito virtuale" nella posizione simmetricamente opposta rispetto al centro dello schermo.
+
+
+#### Preferenze di iniezione del testo
+
+Ci sono due tipi di [eventi][textevents] generati quando si scrive testo:
+ - _eventi di pressione_, segnalano che tasto è stato premuto o rilasciato;
+ - _eventi di testo_, segnalano che del testo è stato inserito.
+
+In maniera predefinita le lettere sono "iniettate" usando gli eventi di pressione, in maniera tale che la tastiera si comporti come aspettato nei giochi (come accade solitamente per i tasti WASD).
+
+Questo, però, può [causare problemi][prefertext]. Se incontri un problema del genere, puoi evitarlo con:
+
+```bash
+scrcpy --prefer-text
+```
+
+(ma questo romperà il normale funzionamento della tastiera nei giochi)
+
+[textevents]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-text-input
+[prefertext]: https://github.com/Genymobile/scrcpy/issues/650#issuecomment-512945343
+
+
+#### Ripetizione di tasti
+
+In maniera predefinita tenere premuto un tasto genera una ripetizione degli eventi di pressione di tale tasto. Questo può creare problemi di performance in alcuni giochi, dove questi eventi sono inutilizzati.
+
+Per prevenire l'inoltro ripetuto degli eventi di pressione:
+
+```bash
+scrcpy --no-key-repeat
+```
+
+#### Click destro e click centrale
+
+In maniera predefinita, click destro aziona BACK (indietro) e il click centrale aziona HOME. Per disabilitare queste scorciatoie e, invece, inviare i click al dispositivo:
+
+```bash
+scrcpy --forward-all-clicks
+```
+
+
+### Rilascio di file
+
+#### Installare APK
+
+Per installare un APK, trascina e rilascia un file APK (finisce con `.apk`) nella finestra di _scrcpy_.
+
+Non c'è alcuna risposta visiva, un log è stampato nella console.
+
+
+#### Trasferimento di file verso il dispositivo
+
+Per trasferire un file in `/sdcard/Download` del dispositivo trascina e rilascia un file (non APK) nella finestra di _scrcpy_.
+
+Non c'è alcuna risposta visiva, un log è stampato nella console.
+
+La cartella di destinazione può essere cambiata all'avvio:
+
+```bash
+scrcpy --push-target=/sdcard/Movies/
+```
+
+
+### Inoltro dell'audio
+
+L'audio non è inoltrato da _scrcpy_. Usa [sndcpy].
+
+Vedi anche la [issue #14].
+
+[sndcpy]: https://github.com/rom1v/sndcpy
+[issue #14]: https://github.com/Genymobile/scrcpy/issues/14
+
+
+## Scociatoie
+
+Nella lista seguente, <kbd>MOD</kbd> è il modificatore delle scorciatoie. In maniera predefinita è <kbd>Alt</kbd> (sinistro) o <kbd>Super</kbd> (sinistro).
+
+Può essere cambiato usando `--shortcut-mod`. I tasti possibili sono `lctrl`, `rctrl`, `lalt`, `ralt`, `lsuper` and `rsuper` (`l` significa sinistro e `r` significa destro). Per esempio:
+
+```bash
+# usa ctrl destro per le scorciatoie
+scrcpy --shortcut-mod=rctrl
+
+# use sia "ctrl sinistro"+"alt sinistro" che "super sinistro" per le scorciatoie
+scrcpy --shortcut-mod=lctrl+lalt,lsuper
+```
+
+_<kbd>[Super]</kbd> è il pulsante <kbd>Windows</kbd> o <kbd>Cmd</kbd>._
+
+[Super]: https://it.wikipedia.org/wiki/Tasto_Windows
+<!-- https://en.wikipedia.org/wiki/Super_key_(keyboard_button) è la pagina originale di Wikipedia inglese, l'ho sostituita con una simile in quello italiano -->
+
+ | Azione                                      |   Scorciatoia
+ | ------------------------------------------- |:-----------------------------
+ | Schermo intero                      | <kbd>MOD</kbd>+<kbd>f</kbd>
+ | Rotazione schermo a sinistra                         | <kbd>MOD</kbd>+<kbd>←</kbd> _(sinistra)_
+ | Rotazione schermo a destra                        | <kbd>MOD</kbd>+<kbd>→</kbd> _(destra)_
+ | Ridimensiona finestra a 1:1 (pixel-perfect)        | <kbd>MOD</kbd>+<kbd>g</kbd>
+ | Ridimensiona la finestra per rimuovere i bordi neri       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Doppio click sinistro¹_
+ | Premi il tasto `HOME`                             | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Click centrale_
+ | Premi il tasto `BACK`                             | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Click destro²_
+ | Premi il tasto `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd> \| _4° click³_
+ | Premi il tasto `MENU` (sblocca lo schermo)             | <kbd>MOD</kbd>+<kbd>m</kbd>
+ | Premi il tasto `VOLUME_UP`                        | <kbd>MOD</kbd>+<kbd>↑</kbd> _(su)_
+ | Premi il tasto `VOLUME_DOWN`                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(giù)_
+ | Premi il tasto `POWER`                            | <kbd>MOD</kbd>+<kbd>p</kbd>
+ | Accendi                                    | _Click destro²_
+ | Spegni lo schermo del dispositivo (continua a trasmettere)     | <kbd>MOD</kbd>+<kbd>o</kbd>
+ | Accendi lo schermo del dispositivo                       | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
+ | Ruota lo schermo del dispositivo                        | <kbd>MOD</kbd>+<kbd>r</kbd>
+ | Espandi il pannello delle notifiche                   | <kbd>MOD</kbd>+<kbd>n</kbd> \| _5° click³_
+ | Espandi il pannello delle impostazioni                   | <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _Doppio 5° click³_
+ | Chiudi pannelli                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copia negli appunti⁴                          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Taglia negli appunti⁴                           | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Sincronizza gli appunti e incolla⁴           | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | Inietta il testo degli appunti del computer              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
+ | Abilita/Disabilita il contatore FPS (su stdout)      | <kbd>MOD</kbd>+<kbd>i</kbd>
+ | Pizzica per zoomare                               | <kbd>Ctrl</kbd>+_click e trascina_
+
+_¹Doppio click sui bordi neri per rimuoverli._  
+_²Il tasto destro accende lo schermo se era spento, preme BACK in caso contrario._  
+_³4° e 5° pulsante del mouse, se il tuo mouse ne dispone._  
+_⁴Solo in Android >= 7._
+
+Le scorciatoie con pulsanti ripetuti sono eseguite rilasciando e premendo il pulsante una seconda volta. Per esempio, per eseguire "Espandi il pannello delle impostazioni":
+
+1. Premi e tieni premuto <kbd>MOD</kbd>.
+2. Poi premi due volte <kbd>n</kbd>.
+3. Infine rilascia <kbd>MOD</kbd>.
+
+Tutte le scorciatoie <kbd>Ctrl</kbd>+_tasto_ sono inoltrate al dispositivo, così sono gestite dall'applicazione attiva.
+
+## Path personalizzati
+
+Per utilizzare dei binari _adb_ specifici, configura il suo path nella variabile d'ambente `ADB`:
+
+```bash
+ADB=/percorso/per/adb scrcpy
+```
+
+Per sovrascrivere il percorso del file `scrcpy-server`, configura il percorso in `SCRCPY_SERVER_PATH`.
+
+## Perchè _scrcpy_?
+
+Un collega mi ha sfidato a trovare un nome tanto impronunciabile quanto [gnirehtet].
+
+[`strcpy`] copia una **str**ing (stringa); `scrcpy` copia uno **scr**een (schermo).
+
+[gnirehtet]: https://github.com/Genymobile/gnirehtet
+[`strcpy`]: http://man7.org/linux/man-pages/man3/strcpy.3.html
+
+## Come compilare?
+
+Vedi [BUILD] (in inglese).
+
+
+## Problemi comuni
+
+Vedi le [FAQ](FAQ.it.md).
+
+
+## Sviluppatori
+
+Leggi la [pagina per sviluppatori].
+
+[pagina per sviluppatori]: DEVELOP.md
+
+
+## Licenza (in inglese)
+
+    Copyright (C) 2018 Genymobile
+    Copyright (C) 2018-2021 Romain Vimont
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+## Articoli (in inglese)
+
+- [Introducendo scrcpy][article-intro]
+- [Scrcpy ora funziona wireless][article-tcpip]
+
+[article-intro]: https://blog.rom1v.com/2018/03/introducing-scrcpy/
+[article-tcpip]: https://www.genymotion.com/blog/open-source-project-scrcpy-now-works-wirelessly/

README.jp.md

@@ -0,0 +1,799 @@
+_Only the original [README](README.md) is guaranteed to be up-to-date._
+
+# scrcpy (v1.19)
+
+このアプリケーションはUSB(もしくは[TCP/IP経由][article-tcpip])で接続されたAndroidデバイスの表示と制御を提供します。このアプリケーションは _root_ でのアクセスを必要としません。このアプリケーションは _GNU/Linux_ 、 _Windows_ そして _macOS_ 上で動作します。
+
+![screenshot](assets/screenshot-debian-600.jpg)
+
+以下に焦点を当てています:
+
+ - **軽量** (ネイティブ、デバイス画面表示のみ)
+ - **パフォーマンス**　(30~60fps)
+ - **クオリティ**　(1920x1080以上)
+ - **低遅延**　([35~70ms][lowlatency])
+ - **短い起動時間**　(初回画像を1秒以内に表示)
+ - **非侵入型**　(デバイスに何もインストールされていない状態になる)
+
+[lowlatency]: https://github.com/Genymobile/scrcpy/pull/646
+
+
+## 必要要件
+
+AndroidデバイスはAPI21(Android 5.0)以上。
+
+Androidデバイスで[adbデバッグが有効][enable-adb]であること。
+
+[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
+
+一部のAndroidデバイスでは、キーボードとマウスを使用して制御する[追加オプション][control]を有効にする必要がある。
+
+[control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
+
+
+## アプリの取得
+
+<a href="https://repology.org/project/scrcpy/versions"><img src="https://repology.org/badge/vertical-allrepos/scrcpy.svg" alt="Packaging status" align="right"></a>
+
+### Linux
+
+Debian (_testing_ と _sid_) とUbuntu(20.04):
+
+```
+apt install scrcpy
+```
+
+[Snap]パッケージが利用可能: [`scrcpy`][snap-link]
+
+[snap-link]: https://snapstats.org/snaps/scrcpy
+
+[snap]: https://en.wikipedia.org/wiki/Snappy_(package_manager)
+
+Fedora用[COPR]パッケージが利用可能: [`scrcpy`][copr-link]
+
+[COPR]: https://fedoraproject.org/wiki/Category:Copr
+[copr-link]: https://copr.fedorainfracloud.org/coprs/zeno/scrcpy/
+
+Arch Linux用[AUR]パッケージが利用可能: [`scrcpy`][aur-link]
+
+[AUR]: https://wiki.archlinux.org/index.php/Arch_User_Repository
+[aur-link]: https://aur.archlinux.org/packages/scrcpy/
+
+Gentoo用[Ebuild]が利用可能: [`scrcpy`][ebuild-link]
+
+[Ebuild]: https://wiki.gentoo.org/wiki/Ebuild
+[ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy
+
+[自分でビルド][BUILD]も可能（心配しないでください、それほど難しくはありません。）
+
+
+### Windows
+
+Windowsでは簡単に、（`adb`を含む）すべての依存関係を構築済みのアーカイブを利用可能です。
+
+ - [README](README.md#windows)
+
+[Chocolatey]でも利用可能です:
+
+[Chocolatey]: https://chocolatey.org/
+
+```bash
+choco install scrcpy
+choco install adb    # まだ入手していない場合
+```
+
+[Scoop]でも利用可能です:
+
+```bash
+scoop install scrcpy
+scoop install adb    # まだ入手していない場合
+```
+
+[Scoop]: https://scoop.sh
+
+また、[アプリケーションをビルド][BUILD]することも可能です。
+
+### macOS
+
+アプリケーションは[Homebrew]で利用可能です。ただインストールするだけです。
+
+[Homebrew]: https://brew.sh/
+
+```bash
+brew install scrcpy
+```
+
+`PATH`からアクセス可能な`adb`が必要です。もし持っていない場合はインストールしてください。
+
+```bash
+brew install android-platform-tools
+```
+
+`adb`は[MacPorts]からでもインストールできます。
+
+```bash
+sudo port install scrcpy
+```
+
+[MacPorts]: https://www.macports.org/
+
+また、[アプリケーションをビルド][BUILD]することも可能です。
+
+## 実行
+
+Androidデバイスを接続し、実行:
+
+```bash
+scrcpy
+```
+
+次のコマンドでリストされるコマンドライン引数も受け付けます:
+
+```bash
+scrcpy --help
+```
+
+## 機能
+
+### キャプチャ構成
+
+#### サイズ削減
+
+Androidデバイスを低解像度でミラーリングする場合、パフォーマンス向上に便利な場合があります。
+
+幅と高さをある値(例：1024)に制限するには:
+
+```bash
+scrcpy --max-size 1024
+scrcpy -m 1024  # 短縮版
+```
+
+一方のサイズはデバイスのアスペクト比が維持されるように計算されます。この方法では、1920x1080のデバイスでは1024x576にミラーリングされます。
+
+
+#### ビットレート変更
+
+ビットレートの初期値は8Mbpsです。ビットレートを変更するには(例:2Mbpsに変更):
+
+```bash
+scrcpy --bit-rate 2M
+scrcpy -b 2M  # 短縮版
+```
+
+#### フレームレート制限
+
+キャプチャするフレームレートを制限できます:
+
+```bash
+scrcpy --max-fps 15
+```
+
+この機能はAndroid 10からオフィシャルサポートとなっていますが、以前のバージョンでも動作する可能性があります。
+
+#### トリミング
+
+デバイスの画面は、画面の一部のみをミラーリングするようにトリミングできます。
+
+これは、例えばOculus Goの片方の目をミラーリングする場合に便利です。:
+
+```bash
+scrcpy --crop 1224:1440:0:0   # オフセット位置(0,0)で1224x1440
+```
+
+もし`--max-size`も指定されている場合、トリミング後にサイズ変更が適用されます。
+
+#### ビデオの向きをロックする
+
+ミラーリングの向きをロックするには:
+
+```bash
+scrcpy --lock-video-orientation     # 現在の向き
+scrcpy --lock-video-orientation=0   # 自然な向き
+scrcpy --lock-video-orientation=1   # 90°反時計回り
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 90°時計回り
+```
+
+この設定は録画の向きに影響します。
+
+[ウィンドウは独立して回転することもできます](#回転)。
+
+
+#### エンコーダ
+
+いくつかのデバイスでは一つ以上のエンコーダを持ちます。それらのいくつかは、問題やクラッシュを引き起こします。別のエンコーダを選択することが可能です:
+
+
+```bash
+scrcpy --encoder OMX.qcom.video.encoder.avc
+```
+
+利用可能なエンコーダをリストするために、無効なエンコーダ名を渡すことができます。エラー表示で利用可能なエンコーダを提供します。
+
+```bash
+scrcpy --encoder _
+```
+
+### キャプチャ
+
+#### 録画
+
+ミラーリング中に画面の録画をすることが可能です:
+
+```bash
+scrcpy --record file.mp4
+scrcpy -r file.mkv
+```
+
+録画中にミラーリングを無効にするには:
+
+```bash
+scrcpy --no-display --record file.mp4
+scrcpy -Nr file.mkv
+# Ctrl+Cで録画を中断する
+```
+
+"スキップされたフレーム"は(パフォーマンス上の理由で)リアルタイムで表示されなくても録画されます。
+
+フレームはデバイス上で _タイムスタンプされる_ ため [パケット遅延のバリエーション] は録画されたファイルに影響を与えません。
+
+[パケット遅延のバリエーション]: https://en.wikipedia.org/wiki/Packet_delay_variation
+
+#### v4l2loopback
+
+Linuxでは、ビデオストリームをv4l2ループバックデバイスに送信することができます。
+v4l2loopbackのデバイスにビデオストリームを送信することで、Androidデバイスをウェブカメラのようにv4l2対応ツールで開くこともできます。
+
+`v4l2loopback` モジュールのインストールが必要です。
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+v4l2デバイスを作成する。
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+これにより、新しいビデオデバイスが `/dev/videoN` に作成されます。（`N` は整数）
+(複数のデバイスや特定のIDのデバイスを作成するために、より多くの[オプション](https://github.com/umlaeute/v4l2loopback#options)が利用可能です。
+多くの[オプション]()が利用可能で複数のデバイスや特定のIDのデバイスを作成できます。
+
+
+有効なデバイスを一覧表示する:
+
+```bash
+# v4l-utilsパッケージが必要
+v4l2-ctl --list-devices
+
+# シンプルですが十分これで確認できます
+ls /dev/video*
+```
+
+v4l2シンクを使用してscrcpyを起動する。
+
+```bash
+scrcpy --v4l2-sink=/dev/videoN
+scrcpy --v4l2-sink=/dev/videoN --no-display  # ミラーリングウィンドウを無効化する
+scrcpy --v4l2-sink=/dev/videoN -N            # 短縮版
+```
+
+(`N` をデバイス ID に置き換えて、`ls /dev/video*` で確認してください)
+有効にすると、v4l2対応のツールでビデオストリームを開けます。
+
+```bash
+ffplay -i /dev/videoN
+vlc v4l2:///dev/videoN   # VLCではバッファリングの遅延が発生する場合があります
+```
+
+例えばですが [OBS]の中にこの映像を取り込めことができます。
+
+[OBS]: https://obsproject.com/
+
+
+#### Buffering
+
+バッファリングを追加することも可能です。これによりレイテンシーは増加しますが、ジッターは減少します。（参照
+[#2464])
+
+[#2464]: https://github.com/Genymobile/scrcpy/issues/2464
+
+このオプションでディスプレイバッファリングを設定できます。
+
+```bash
+scrcpy --display-buffer=50  # ディスプレイに50msのバッファリングを追加する
+```
+
+V4L2の場合はこちらのオプションで設定できます。
+
+```bash
+scrcpy --v4l2-buffer=500    # add 500 ms buffering for v4l2 sink
+```
+
+### 接続
+
+#### ワイヤレス
+
+_Scrcpy_ はデバイスとの通信に`adb`を使用します。そして`adb`はTCP/IPを介しデバイスに[接続]することができます:
+
+1. あなたのコンピュータと同じWi-Fiに接続します。
+2. あなたのIPアドレスを取得します。設定 → 端末情報 → ステータス情報、もしくは、このコマンドを実行します:
+
+    ```bash
+    adb shell ip route | awk '{print $9}'
+    ```
+
+3. あなたのデバイスでTCP/IPを介したadbを有効にします: `adb tcpip 5555`
+4. あなたのデバイスの接続を外します。
+5. あなたのデバイスに接続します:
+ `adb connect DEVICE_IP:5555` _(`DEVICE_IP`は置き換える)_
+6. 通常通り`scrcpy`を実行します。
+
+この方法はビットレートと解像度を減らすのにおそらく有用です:
+
+```bash
+scrcpy --bit-rate 2M --max-size 800
+scrcpy -b2M -m800  # 短縮版
+```
+
+[接続]: https://developer.android.com/studio/command-line/adb.html#wireless
+
+
+#### マルチデバイス
+
+もし`adb devices`でいくつかのデバイスがリストされる場合、 _シリアルナンバー_ を指定する必要があります:
+
+```bash
+scrcpy --serial 0123456789abcdef
+scrcpy -s 0123456789abcdef  # 短縮版
+```
+
+デバイスがTCP/IPを介して接続されている場合:
+
+```bash
+scrcpy --serial 192.168.0.1:5555
+scrcpy -s 192.168.0.1:5555  # 短縮版
+```
+
+複数のデバイスに対して、複数の _scrcpy_ インスタンスを開始することができます。
+
+#### デバイス接続での自動起動
+
+[AutoAdb]を使用可能です:
+
+```bash
+autoadb scrcpy -s '{}'
+```
+
+[AutoAdb]: https://github.com/rom1v/autoadb
+
+#### SSHトンネル
+
+リモートデバイスに接続するため、ローカル`adb`クライアントからリモート`adb`サーバーへ接続することが可能です(同じバージョンの _adb_ プロトコルを使用している場合):
+
+```bash
+adb kill-server    # 5037ポートのローカルadbサーバーを終了する
+ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
+# オープンしたままにする
+```
+
+他の端末から:
+
+```bash
+scrcpy
+```
+
+リモートポート転送の有効化を回避するためには、代わりに転送接続を強制することができます(`-R`の代わりに`-L`を使用することに注意):
+
+```bash
+adb kill-server    # 5037ポートのローカルadbサーバーを終了する
+ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
+# オープンしたままにする
+```
+
+他の端末から:
+
+```bash
+scrcpy --force-adb-forward
+```
+
+
+ワイヤレス接続と同様に、クオリティを下げると便利な場合があります:
+
+```
+scrcpy -b2M -m800 --max-fps 15
+```
+
+### ウィンドウ構成
+
+#### タイトル
+
+ウィンドウのタイトルはデバイスモデルが初期値です。これは変更できます:
+
+```bash
+scrcpy --window-title 'My device'
+```
+
+#### 位置とサイズ
+
+ウィンドウの位置とサイズの初期値を指定できます:
+
+```bash
+scrcpy --window-x 100 --window-y 100 --window-width 800 --window-height 600
+```
+
+#### ボーダーレス
+
+ウィンドウの装飾を無効化するには:
+
+```bash
+scrcpy --window-borderless
+```
+
+#### 常に画面のトップ
+
+scrcpyの画面を常にトップにするには:
+
+```bash
+scrcpy --always-on-top
+```
+
+#### フルスクリーン
+
+アプリケーションを直接フルスクリーンで開始できます:
+
+```bash
+scrcpy --fullscreen
+scrcpy -f  # 短縮版
+```
+
+フルスクリーンは、次のコマンドで動的に切り替えることができます <kbd>MOD</kbd>+<kbd>f</kbd>
+
+
+#### 回転
+
+ウィンドウは回転することができます:
+
+```bash
+scrcpy --rotation 1
+```
+
+設定可能な値:
+ - `0`: 回転なし
+ - `1`: 90° 反時計回り
+ - `2`: 180°
+ - `3`: 90° 時計回り
+
+回転は次のコマンドで動的に変更することができます。 <kbd>MOD</kbd>+<kbd>←</kbd>_(左)_ 、 <kbd>MOD</kbd>+<kbd>→</kbd>_(右)_
+
+_scrcpy_ は3つの回転を管理することに注意:
+ - <kbd>MOD</kbd>+<kbd>r</kbd>はデバイスに縦向きと横向きの切り替えを要求する(現在実行中のアプリで要求している向きをサポートしていない場合、拒否することがある)
+ - [`--lock-video-orientation`](#ビデオの向きをロックする)は、ミラーリングする向きを変更する(デバイスからPCへ送信される向き)。録画に影響します。
+ - `--rotation` (もしくは<kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>)は、ウィンドウのコンテンツのみを回転します。これは表示にのみに影響し、録画には影響しません。
+
+### 他のミラーリングオプション
+
+#### Read-only　リードオンリー
+
+制御を無効にするには(デバイスと対話する全てのもの:入力キー、マウスイベント、ファイルのドラッグ&ドロップ):
+
+```bash
+scrcpy --no-control
+scrcpy -n
+```
+
+#### ディスプレイ
+
+いくつか利用可能なディスプレイがある場合、ミラーリングするディスプレイを選択できます:
+
+```bash
+scrcpy --display 1
+```
+
+ディスプレイIDのリストは次の方法で取得できます:
+
+```
+adb shell dumpsys display   # search "mDisplayId=" in the output
+```
+
+セカンダリディスプレイは、デバイスが少なくともAndroid 10の場合にコントロール可能です。(それ以外ではリードオンリーでミラーリングされます)
+
+
+#### 起動状態にする
+
+デバイス接続時、少し遅れてからデバイスのスリープを防ぐには:
+
+```bash
+scrcpy --stay-awake
+scrcpy -w
+```
+
+scrcpyが閉じられた時、初期状態に復元されます。
+
+#### 画面OFF
+
+コマンドラインオプションを使用することで、ミラーリングの開始時にデバイスの画面をOFFにすることができます:
+
+```bash
+scrcpy --turn-screen-off
+scrcpy -S
+```
+
+もしくは、<kbd>MOD</kbd>+<kbd>o</kbd>を押すことでいつでもできます。
+
+元に戻すには、<kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>を押します。
+
+Androidでは、`POWER`ボタンはいつでも画面を表示します。便宜上、`POWER`がscrcpyを介して(右クリックもしくは<kbd>MOD</kbd>+<kbd>p</kbd>を介して)送信される場合、(ベストエフォートベースで)少し遅れて、強制的に画面を非表示にします。ただし、物理的な`POWER`ボタンを押した場合は、画面は表示されます。
+
+このオプションはデバイスがスリープしないようにすることにも役立ちます:
+
+```bash
+scrcpy --turn-screen-off --stay-awake
+scrcpy -Sw
+```
+
+
+#### タッチを表示
+
+プレゼンテーションの場合(物理デバイス上で)物理的なタッチを表示すると便利な場合があります。
+
+Androidはこの機能を _開発者オプション_ で提供します。
+
+_Scrcpy_　は開始時にこの機能を有効にし、終了時に初期値を復元するオプションを提供します:
+
+```bash
+scrcpy --show-touches
+scrcpy -t
+```
+
+(デバイス上で指を使った) _物理的な_ タッチのみ表示されることに注意してください。
+
+
+#### スクリーンセーバー無効
+
+初期状態では、scrcpyはコンピュータ上でスクリーンセーバーが実行される事を妨げません。
+
+これを無効にするには:
+
+```bash
+scrcpy --disable-screensaver
+```
+
+
+### 入力制御
+
+#### デバイス画面の回転
+
+<kbd>MOD</kbd>+<kbd>r</kbd>を押すことで、縦向きと横向きを切り替えます。
+
+フォアグラウンドのアプリケーションが要求された向きをサポートしている場合のみ回転することに注意してください。
+
+#### コピー-ペースト
+
+Androidのクリップボードが変更される度に、コンピュータのクリップボードに自動的に同期されます。
+
+<kbd>Ctrl</kbd>のショートカットは全てデバイスに転送されます。特に:
+ - <kbd>Ctrl</kbd>+<kbd>c</kbd> 通常はコピーします
+ - <kbd>Ctrl</kbd>+<kbd>x</kbd> 通常はカットします
+ - <kbd>Ctrl</kbd>+<kbd>v</kbd> 通常はペーストします(コンピュータとデバイスのクリップボードが同期された後)
+
+通常は期待通りに動作します。
+
+しかしながら、実際の動作はアクティブなアプリケーションに依存します。例えば、_Termux_ は代わりに<kbd>Ctrl</kbd>+<kbd>c</kbd>でSIGINTを送信します、そして、_K-9 Mail_ は新しいメッセージを作成します。
+
+このようなケースでコピー、カットそしてペーストをするには(Android 7以上でのサポートのみですが):
+ - <kbd>MOD</kbd>+<kbd>c</kbd> `COPY`を挿入
+ - <kbd>MOD</kbd>+<kbd>x</kbd> `CUT`を挿入
+ - <kbd>MOD</kbd>+<kbd>v</kbd> `PASTE`を挿入(コンピュータとデバイスのクリップボードが同期された後)
+
+加えて、<kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>はコンピュータのクリップボードテキストにキーイベントのシーケンスとして挿入することを許可します。これはコンポーネントがテキストのペーストを許可しない場合(例えば _Termux_)に有用ですが、非ASCIIコンテンツを壊す可能性があります。
+
+**警告:** デバイスにコンピュータのクリップボードを(<kbd>Ctrl</kbd>+<kbd>v</kbd>または<kbd>MOD</kbd>+<kbd>v</kbd>を介して)ペーストすることは、デバイスのクリップボードにコンテンツをコピーします。結果としてどのAndoridアプリケーションもそのコンテンツを読み取ることができます。機密性の高いコンテンツ(例えばパスワードなど)をこの方法でペーストすることは避けてください。
+
+プログラムでデバイスのクリップボードを設定した場合、一部のデバイスは期待どおりに動作しません。`--legacy-paste`オプションは、コンピュータのクリップボードテキストをキーイベントのシーケンスとして挿入するため(<kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>と同じ方法)、<kbd>Ctrl</kbd>+<kbd>v</kbd>と<kbd>MOD</kbd>+<kbd>v</kbd>の動作の変更を提供します。
+
+#### ピンチしてズームする
+
+"ピンチしてズームする"をシミュレートするには: <kbd>Ctrl</kbd>+_クリック&移動_
+
+より正確にするには、左クリックボタンを押している間、<kbd>Ctrl</kbd>を押したままにします。左クリックボタンを離すまで、全てのマウスの動きは、(アプリでサポートされている場合)画面の中心を基準として、コンテンツを拡大縮小および回転します。
+
+具体的には、scrcpyは画面の中央を反転した位置にある"バーチャルフィンガー"から追加のタッチイベントを生成します。
+
+
+#### テキストインジェクション環境設定
+
+テキストをタイプした時に生成される2種類の[イベント][textevents]があります:
+ - _key events_　はキーを押したときと離したことを通知します。
+ - _text events_　はテキストが入力されたことを通知します。
+
+初期状態で、文字はキーイベントで挿入されるため、キーボードはゲームで期待通りに動作します(通常はWASDキー)。
+
+しかし、これは[問題を引き起こす][prefertext]かもしれません。もしこのような問題が発生した場合は、この方法で回避できます:
+
+```bash
+scrcpy --prefer-text
+```
+
+(しかしこの方法はゲームのキーボードの動作を壊します)
+
+[textevents]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-text-input
+[prefertext]: https://github.com/Genymobile/scrcpy/issues/650#issuecomment-512945343
+
+
+#### キーの繰り返し
+
+初期状態では、キーの押しっぱなしは繰り返しのキーイベントを生成します。これらのイベントが使われない場合でも、この方法は一部のゲームでパフォーマンスの問題を引き起す可能性があります。
+
+繰り返しのキーイベントの転送を回避するためには:
+
+```bash
+scrcpy --no-key-repeat
+```
+
+
+#### 右クリックと真ん中クリック
+
+初期状態では、右クリックはバックの動作(もしくはパワーオン)を起こし、真ん中クリックではホーム画面へ戻ります。このショートカットを無効にし、代わりにデバイスへクリックを転送するには:
+
+```bash
+scrcpy --forward-all-clicks
+```
+
+
+### ファイルのドロップ
+
+#### APKのインストール
+
+APKをインストールするには、(`.apk`で終わる)APKファイルを _scrcpy_ の画面にドラッグ&ドロップします。
+
+見た目のフィードバックはありません。コンソールにログが出力されます。
+
+
+#### デバイスにファイルを送る
+
+デバイスの`/sdcard/Download`ディレクトリにファイルを送るには、(APKではない)ファイルを _scrcpy_ の画面にドラッグ&ドロップします。
+
+見た目のフィードバックはありません。コンソールにログが出力されます。
+
+転送先ディレクトリを起動時に変更することができます:
+
+```bash
+scrcpy --push-target=/sdcard/Movies/
+```
+
+
+### 音声転送
+
+音声は _scrcpy_ では転送されません。[sndcpy]を使用します。
+
+[issue #14]も参照ください。
+
+[sndcpy]: https://github.com/rom1v/sndcpy
+[issue #14]: https://github.com/Genymobile/scrcpy/issues/14
+
+
+## ショートカット
+
+次のリストでは、<kbd>MOD</kbd>でショートカット変更します。初期状態では、(left)<kbd>Alt</kbd>または(left)<kbd>Super</kbd>です。
+
+これは`--shortcut-mod`で変更することができます。可能なキーは`lctrl`、`rctrl`、`lalt`、 `ralt`、 `lsuper`そして`rsuper`です。例えば:
+
+```bash
+# RCtrlをショートカットとして使用します
+scrcpy --shortcut-mod=rctrl
+
+# ショートカットにLCtrl+LAltまたはLSuperのいずれかを使用します
+scrcpy --shortcut-mod=lctrl+lalt,lsuper
+```
+
+_<kbd>[Super]</kbd>は通常<kbd>Windows</kbd>もしくは<kbd>Cmd</kbd>キーです。_
+
+[Super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button)
+
+ | アクション                                   |   ショートカット
+ | ------------------------------------------- |:-----------------------------
+ | フルスクリーンモードへの切り替え               | <kbd>MOD</kbd>+<kbd>f</kbd>
+ | ディスプレイを左に回転                        | <kbd>MOD</kbd>+<kbd>←</kbd> _(左)_
+ | ディスプレイを右に回転                        | <kbd>MOD</kbd>+<kbd>→</kbd> _(右)_
+ | ウィンドウサイズを変更して1:1に変更(ピクセルパーフェクト)  | <kbd>MOD</kbd>+<kbd>g</kbd>
+ | ウィンドウサイズを変更して黒い境界線を削除      | <kbd>MOD</kbd>+<kbd>w</kbd> \| _ダブルクリック¹_
+ | `HOME`をクリック                             | <kbd>MOD</kbd>+<kbd>h</kbd> \| _真ん中クリック_
+ | `BACK`をクリック                             | <kbd>MOD</kbd>+<kbd>b</kbd> \| _右クリック²_
+ | `APP_SWITCH`をクリック                       | <kbd>MOD</kbd>+<kbd>s</kbd> \| _4クリック³_
+ | `MENU` (画面のアンロック)をクリック            | <kbd>MOD</kbd>+<kbd>m</kbd>
+ | `VOLUME_UP`をクリック                        | <kbd>MOD</kbd>+<kbd>↑</kbd> _(上)_
+ | `VOLUME_DOWN`をクリック                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(下)_
+ | `POWER`をクリック                            | <kbd>MOD</kbd>+<kbd>p</kbd>
+ | 電源オン                                     | _右クリック²_
+ | デバイス画面をオフにする(ミラーリングしたまま)  | <kbd>MOD</kbd>+<kbd>o</kbd>
+ | デバイス画面をオンにする                      | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
+ | デバイス画面を回転する                        | <kbd>MOD</kbd>+<kbd>r</kbd>
+ | 通知パネルを展開する                          | <kbd>MOD</kbd>+<kbd>n</kbd> \| _5ボタンクリック³_
+ | 設定パネルを展開する                          | <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _5ダブルクリック³_
+ | 通知パネルを折りたたむ                        | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | クリップボードへのコピー³                     | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | クリップボードへのカット³                     | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | クリップボードの同期とペースト³                | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | コンピュータのクリップボードテキストの挿入      | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
+ | FPSカウンタ有効/無効(標準入出力上)             | <kbd>MOD</kbd>+<kbd>i</kbd>
+ | ピンチしてズームする                          | <kbd>Ctrl</kbd>+_クリック&移動_
+
+_¹黒い境界線を削除するため、境界線上でダブルクリック_  
+_²もしスクリーンがオフの場合、右クリックでスクリーンをオンする。それ以外の場合はBackを押します._  
+_³4と5はマウスのボタンです、もしあなたのマウスにボタンがあれば使えます._  
+_⁴Android 7以上のみ._
+
+キーを繰り返すショートカットはキーを離して2回目を押したら実行されます。例えば「設定パネルを展開する」を実行する場合は以下のように操作する。
+
+ 1. <kbd>MOD</kbd> キーを押し、押したままにする.
+ 2. その後に <kbd>n</kbd>キーを2回押す.
+ 3. 最後に <kbd>MOD</kbd>キーを離す.
+
+全ての<kbd>Ctrl</kbd>+_キー_ ショートカットはデバイスに転送されます、そのためアクティブなアプリケーションによって処理されます。
+
+## カスタムパス
+
+特定の _adb_ バイナリを使用する場合、そのパスを環境変数`ADB`で構成します:
+
+    ADB=/path/to/adb scrcpy
+
+`scrcpy-server`ファイルのパスを上書きするには、`SCRCPY_SERVER_PATH`でそのパスを構成します。
+
+[useful]: https://github.com/Genymobile/scrcpy/issues/278#issuecomment-429330345
+
+
+## なぜ _scrcpy_?
+
+同僚が私に、[gnirehtet]のように発音できない名前を見つけるように要求しました。
+
+[`strcpy`]は**str**ingをコピーします。`scrcpy`は**scr**eenをコピーします。
+
+[gnirehtet]: https://github.com/Genymobile/gnirehtet
+[`strcpy`]: http://man7.org/linux/man-pages/man3/strcpy.3.html
+
+
+## ビルド方法は?
+
+[BUILD]を参照してください。
+
+[BUILD]: BUILD.md
+
+
+## よくある質問
+
+[FAQ](FAQ.md)を参照してください。
+
+
+## 開発者
+
+[開発者のページ]を読んでください。
+
+[開発者のページ]: DEVELOP.md
+
+
+## ライセンス
+
+    Copyright (C) 2018 Genymobile
+    Copyright (C) 2018-2021 Romain Vimont
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+## 記事
+
+- [Introducing scrcpy][article-intro]
+- [Scrcpy now works wirelessly][article-tcpip]
+
+[article-intro]: https://blog.rom1v.com/2018/03/introducing-scrcpy/
+[article-tcpip]: https://www.genymotion.com/blog/open-source-project-scrcpy-now-works-wirelessly/

README.ko.md

@@ -68,9 +68,7 @@ Gentoo에서 ,[Ebuild] 가 가능합니다 : [`scrcpy/`][ebuild-link].
 
 윈도우 상에서, 간단하게 설치하기 위해 종속성이 있는 사전 구축된 아카이브가 제공됩니다 (`adb` 포함) :
 해당 파일은 Readme원본 링크를 통해서 다운로드가 가능합니다.
- - [`scrcpy-win`][direct-win]
-
-[direct-win]: https://github.com/Genymobile/scrcpy/blob/master/README.md#windows
+ - [README](README.md#windows)
 
 
 [어플을 직접 설치][BUILD] 할 수도 있습니다.
@@ -114,7 +112,7 @@ scrcpy --help
 ### 캡쳐 환경 설정
 
 
-###사이즈 재정의
+### 사이즈 재정의
 
 가끔씩 성능을 향상시키기위해 안드로이드 디바이스를 낮은 해상도에서 미러링하는 것이 유용할 때도 있습니다.
 
@@ -138,7 +136,7 @@ scrcpy --bit-rate 2M
 scrcpy -b 2M  # 축약 버전
 ```
 
-###프레임 비율 제한
+### 프레임 비율 제한
 
 안드로이드 버전 10이상의 디바이스에서는, 다음의 명령어로 캡쳐 화면의 프레임 비율을 제한할 수 있습니다:
 
@@ -477,7 +475,7 @@ _²화면이 꺼진 상태에서 우클릭 시 다시 켜지며, 그 외의 상
 ## 라이선스
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2020 Romain Vimont
+    Copyright (C) 2018-2021 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.md

@@ -1,24 +1,37 @@
-# scrcpy (v1.16)
+# scrcpy (v1.20)
+
+<img src="data/icon.svg" width="128" height="128" alt="scrcpy" align="right" />
 
 [Read in another language](#translations)
 
-This application provides display and control of Android devices connected on
-USB (or [over TCP/IP][article-tcpip]). It does not require any _root_ access.
+This application provides display and control of Android devices connected via
+USB (or [over TCP/IP](#wireless)). It does not require any _root_ access.
 It works on _GNU/Linux_, _Windows_ and _macOS_.
 
 ![screenshot](assets/screenshot-debian-600.jpg)
 
 It focuses on:
 
- - **lightness** (native, displays only the device screen)
- - **performance** (30~60fps)
- - **quality** (1920×1080 or above)
- - **low latency** ([35~70ms][lowlatency])
- - **low startup time** (~1 second to display the first image)
- - **non-intrusiveness** (nothing is left installed on the device)
+ - **lightness**: native, displays only the device screen
+ - **performance**: 30~120fps, depending on the device
+ - **quality**: 1920×1080 or above
+ - **low latency**: [35~70ms][lowlatency]
+ - **low startup time**: ~1 second to display the first image
+ - **non-intrusiveness**: nothing is left installed on the device
+ - **user benefits**: no account, no ads, no internet required
+ - **freedom**: free and open source software
 
 [lowlatency]: https://github.com/Genymobile/scrcpy/pull/646
 
+Its features include:
+ - [recording](#recording)
+ - mirroring with [device screen off](#turn-screen-off)
+ - [copy-paste](#copy-paste) in both directions
+ - [configurable quality](#capture-configuration)
+ - device screen [as a webcam (V4L2)](#v4l2loopback) (Linux-only)
+ - [physical keyboard simulation (HID)](#physical-keyboard-simulation-hid)
+   (Linux-only)
+ - and more…
 
 ## Requirements
 
@@ -38,6 +51,18 @@ control it using keyboard and mouse.
 
 <a href="https://repology.org/project/scrcpy/versions"><img src="https://repology.org/badge/vertical-allrepos/scrcpy.svg" alt="Packaging status" align="right"></a>
 
+### Summary
+
+ - Linux: `apt install scrcpy`
+ - Windows: [download][direct-win64]
+ - macOS: `brew install scrcpy`
+
+Build from sources: [BUILD] ([simplified process][BUILD_simple])
+
+[BUILD]: BUILD.md
+[BUILD_simple]: BUILD.md#simple
+
+
 ### Linux
 
 On Debian (_testing_ and _sid_ for now) and Ubuntu (20.04):
@@ -67,9 +92,8 @@ For Gentoo, an [Ebuild] is available: [`scrcpy/`][ebuild-link].
 [Ebuild]: https://wiki.gentoo.org/wiki/Ebuild
 [ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy
 
-You could also [build the app manually][BUILD] (don't worry, it's not that
-hard).
-
+You could also [build the app manually][BUILD] ([simplified
+process][BUILD_simple]).
 
 
 ### Windows
@@ -77,10 +101,10 @@ hard).
 For Windows, for simplicity, a prebuilt archive with all the dependencies
 (including `adb`) is available:
 
- - [`scrcpy-win64-v1.16.zip`][direct-win64]  
-   _(SHA-256: 3f30dc5db1a2f95c2b40a0f5de91ec1642d9f53799250a8c529bc882bc0918f0)_
+ - [`scrcpy-win64-v1.20.zip`][direct-win64]  
+   _(SHA-256: 548532b616288bcaeceff6881ad5e6f0928e5ae2b48c380385f03627401cfdba)_
 
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.16/scrcpy-win64-v1.16.zip
+[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.20/scrcpy-win64-v1.20.zip
 
 It is also available in [Chocolatey]:
 
@@ -116,9 +140,18 @@ brew install scrcpy
 You need `adb`, accessible from your `PATH`. If you don't have it yet:
 
 ```bash
-brew cask install android-platform-tools
+brew install android-platform-tools
 ```
 
+It's also available in [MacPorts], which sets up adb for you:
+
+```bash
+sudo port install scrcpy
+```
+
+[MacPorts]: https://www.macports.org/
+
+
 You can also [build the app manually][BUILD].
 
 
@@ -194,14 +227,17 @@ If `--max-size` is also specified, resizing is applied after cropping.
 To lock the orientation of the mirroring:
 
 ```bash
-scrcpy --lock-video-orientation 0   # natural orientation
-scrcpy --lock-video-orientation 1   # 90° counterclockwise
-scrcpy --lock-video-orientation 2   # 180°
-scrcpy --lock-video-orientation 3   # 90° clockwise
+scrcpy --lock-video-orientation     # initial (current) orientation
+scrcpy --lock-video-orientation=0   # natural orientation
+scrcpy --lock-video-orientation=1   # 90° counterclockwise
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 90° clockwise
 ```
 
 This affects recording orientation.
 
+The [window may also be rotated](#rotation) independently.
+
 
 #### Encoder
 
@@ -219,7 +255,9 @@ error will give the available encoders:
 scrcpy --encoder _
 ```
 
-### Recording
+### Capture
+
+#### Recording
 
 It is possible to record the screen while mirroring:
 
@@ -243,6 +281,79 @@ variation] does not impact the recorded file.
 [packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
 
 
+#### v4l2loopback
+
+On Linux, it is possible to send the video stream to a v4l2 loopback device, so
+that the Android device can be opened like a webcam by any v4l2-capable tool.
+
+The module `v4l2loopback` must be installed:
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+To create a v4l2 device:
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+This will create a new video device in `/dev/videoN`, where `N` is an integer
+(more [options](https://github.com/umlaeute/v4l2loopback#options) are available
+to create several devices or devices with specific IDs).
+
+To list the enabled devices:
+
+```bash
+# requires v4l-utils package
+v4l2-ctl --list-devices
+
+# simple but might be sufficient
+ls /dev/video*
+```
+
+To start scrcpy using a v4l2 sink:
+
+```bash
+scrcpy --v4l2-sink=/dev/videoN
+scrcpy --v4l2-sink=/dev/videoN --no-display  # disable mirroring window
+scrcpy --v4l2-sink=/dev/videoN -N            # short version
+```
+
+(replace `N` by the device ID, check with `ls /dev/video*`)
+
+Once enabled, you can open your video stream with a v4l2-capable tool:
+
+```bash
+ffplay -i /dev/videoN
+vlc v4l2:///dev/videoN   # VLC might add some buffering delay
+```
+
+For example, you could capture the video within [OBS].
+
+[OBS]: https://obsproject.com/
+
+
+#### Buffering
+
+It is possible to add buffering. This increases latency but reduces jitter (see
+[#2464]).
+
+[#2464]: https://github.com/Genymobile/scrcpy/issues/2464
+
+The option is available for display buffering:
+
+```bash
+scrcpy --display-buffer=50  # add 50 ms buffering for display
+```
+
+and V4L2 sink:
+
+```bash
+scrcpy --v4l2-buffer=500    # add 500 ms buffering for v4l2 sink
+```
+
+
 ### Connection
 
 #### Wireless
@@ -405,11 +516,11 @@ _(left)_ and <kbd>MOD</kbd>+<kbd>→</kbd> _(right)_.
 
 Note that _scrcpy_ manages 3 different rotations:
  - <kbd>MOD</kbd>+<kbd>r</kbd> requests the device to switch between portrait
-   and landscape (the current running app may refuse, if it does support the
+   and landscape (the current running app may refuse, if it does not support the
    requested orientation).
- - `--lock-video-orientation` changes the mirroring orientation (the orientation
-   of the video sent from the device to the computer). This affects the
-   recording.
+ - [`--lock-video-orientation`](#lock-video-orientation) changes the mirroring
+   orientation (the orientation of the video sent from the device to the
+   computer). This affects the recording.
  - `--rotation` (or <kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>)
    rotates only the window content. This affects only the display, not the
    recording.
@@ -438,7 +549,7 @@ scrcpy --display 1
 
 The list of display ids can be retrieved by:
 
-```
+```bash
 adb shell dumpsys display   # search "mDisplayId=" in the output
 ```
 
@@ -484,19 +595,15 @@ scrcpy --turn-screen-off --stay-awake
 scrcpy -Sw
 ```
 
+#### Power off on close
 
-#### Render expired frames
-
-By default, to minimize latency, _scrcpy_ always renders the last decoded frame
-available, and drops any previous one.
-
-To force the rendering of all frames (at a cost of a possible increased
-latency), use:
+To turn the device screen off when closing scrcpy:
 
 ```bash
-scrcpy --render-expired-frames
+scrcpy --power-off-on-close
 ```
 
+
 #### Show touches
 
 For presentations, it may be useful to show physical touches (on the physical
@@ -587,6 +694,39 @@ content (if supported by the app) relative to the center of the screen.
 Concretely, scrcpy generates additional touch events from a "virtual finger" at
 a location inverted through the center of the screen.
 
+#### Physical keyboard simulation (HID)
+
+By default, scrcpy uses Android key or text injection: it works everywhere, but
+is limited to ASCII.
+
+On Linux, scrcpy can simulate a physical USB keyboard on Android to provide a
+better input experience (using [USB HID over AOAv2][hid-aoav2]): the virtual
+keyboard is disabled and it works for all characters and IME.
+
+[hid-aoav2]: https://source.android.com/devices/accessories/aoa2#hid-support
+
+However, it only works if the device is connected by USB, and is currently only
+supported on Linux.
+
+To enable this mode:
+
+```bash
+scrcpy --hid-keyboard
+scrcpy -K  # short version
+```
+
+If it fails for some reason (for example because the device is not connected via
+USB), it automatically fallbacks to the default mode (with a log in the
+console). This allows to use the same command line options when connected over
+USB and TCP/IP.
+
+In this mode, raw key events (scancodes) are sent to the device, independently
+of the host key mapping. Therefore, if your keyboard layout does not match, it
+must be configured on the Android device, in Settings → System → Languages and
+input → [Physical keyboard].
+
+[Physical keyboard]: https://github.com/Genymobile/scrcpy/pull/2632#issuecomment-923756915
+
 
 #### Text injection preference
 
@@ -606,6 +746,9 @@ scrcpy --prefer-text
 
 (but this will break keyboard behavior in games)
 
+This option has no effect on HID keyboard (all key events are sent as
+scancodes in this mode).
+
 [textevents]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-text-input
 [prefertext]: https://github.com/Genymobile/scrcpy/issues/650#issuecomment-512945343
 
@@ -621,6 +764,9 @@ To avoid forwarding repeated key events:
 scrcpy --no-key-repeat
 ```
 
+This option has no effect on HID keyboard (key repeat is handled by Android
+directly in this mode).
+
 
 #### Right-click and middle-click
 
@@ -644,15 +790,15 @@ There is no visual feedback, a log is printed to the console.
 
 #### Push file to device
 
-To push a file to `/sdcard/` on the device, drag & drop a (non-APK) file to the
-_scrcpy_ window.
+To push a file to `/sdcard/Download/` on the device, drag & drop a (non-APK)
+file to the _scrcpy_ window.
 
 There is no visual feedback, a log is printed to the console.
 
 The target directory can be changed on start:
 
 ```bash
-scrcpy --push-target /sdcard/foo/bar/
+scrcpy --push-target=/sdcard/Movies/
 ```
 
 
@@ -692,10 +838,10 @@ _<kbd>[Super]</kbd> is typically the <kbd>Windows</kbd> or <kbd>Cmd</kbd> key._
  | Rotate display left                         | <kbd>MOD</kbd>+<kbd>←</kbd> _(left)_
  | Rotate display right                        | <kbd>MOD</kbd>+<kbd>→</kbd> _(right)_
  | Resize window to 1:1 (pixel-perfect)        | <kbd>MOD</kbd>+<kbd>g</kbd>
- | Resize window to remove black borders       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Double-click¹_
+ | Resize window to remove black borders       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Double-left-click¹_
  | Click on `HOME`                             | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Middle-click_
  | Click on `BACK`                             | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Right-click²_
- | Click on `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd>
+ | Click on `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd> \| _4th-click³_
  | Click on `MENU` (unlock screen)             | <kbd>MOD</kbd>+<kbd>m</kbd>
  | Click on `VOLUME_UP`                        | <kbd>MOD</kbd>+<kbd>↑</kbd> _(up)_
  | Click on `VOLUME_DOWN`                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(down)_
@@ -704,18 +850,29 @@ _<kbd>[Super]</kbd> is typically the <kbd>Windows</kbd> or <kbd>Cmd</kbd> key._
  | Turn device screen off (keep mirroring)     | <kbd>MOD</kbd>+<kbd>o</kbd>
  | Turn device screen on                       | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
  | Rotate device screen                        | <kbd>MOD</kbd>+<kbd>r</kbd>
- | Expand notification panel                   | <kbd>MOD</kbd>+<kbd>n</kbd>
- | Collapse notification panel                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
- | Copy to clipboard³                          | <kbd>MOD</kbd>+<kbd>c</kbd>
- | Cut to clipboard³                           | <kbd>MOD</kbd>+<kbd>x</kbd>
- | Synchronize clipboards and paste³           | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | Expand notification panel                   | <kbd>MOD</kbd>+<kbd>n</kbd> \| _5th-click³_
+ | Expand settings panel                       | <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _Double-5th-click³_
+ | Collapse panels                             | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copy to clipboard⁴                          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Cut to clipboard⁴                           | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Synchronize clipboards and paste⁴           | <kbd>MOD</kbd>+<kbd>v</kbd>
  | Inject computer clipboard text              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
  | Enable/disable FPS counter (on stdout)      | <kbd>MOD</kbd>+<kbd>i</kbd>
  | Pinch-to-zoom                               | <kbd>Ctrl</kbd>+_click-and-move_
+ | Drag & drop APK file                        | Install APK from computer
+ | Drag & drop non-APK file                    | [Push file to device](#push-file-to-device)
 
 _¹Double-click on black borders to remove them._  
 _²Right-click turns the screen on if it was off, presses BACK otherwise._  
-_³Only on Android >= 7._
+_³4th and 5th mouse buttons, if your mouse has them._  
+_⁴Only on Android >= 7._
+
+Shortcuts with repeated keys are executted by releasing and pressing the key a
+second time. For example, to execute "Expand settings panel":
+
+ 1. Press and keep pressing <kbd>MOD</kbd>.
+ 2. Then double-press <kbd>n</kbd>.
+ 3. Finally, release <kbd>MOD</kbd>.
 
 All <kbd>Ctrl</kbd>+_key_ shortcuts are forwarded to the device, so they are
 handled by the active application.
@@ -726,12 +883,14 @@ handled by the active application.
 To use a specific _adb_ binary, configure its path in the environment variable
 `ADB`:
 
-    ADB=/path/to/adb scrcpy
+```bash
+ADB=/path/to/adb scrcpy
+```
 
 To override the path of the `scrcpy-server` file, configure its path in
 `SCRCPY_SERVER_PATH`.
 
-[useful]: https://github.com/Genymobile/scrcpy/issues/278#issuecomment-429330345
+To override the icon, configure its path in `SCRCPY_ICON_PATH`.
 
 
 ## Why _scrcpy_?
@@ -748,8 +907,6 @@ A colleague challenged me to find a name as unpronounceable as [gnirehtet].
 
 See [BUILD].
 
-[BUILD]: BUILD.md
-
 
 ## Common issues
 
@@ -766,7 +923,7 @@ Read the [developers page].
 ## Licence
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2020 Romain Vimont
+    Copyright (C) 2018-2021 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -793,9 +950,13 @@ Read the [developers page].
 This README is available in other languages:
 
 - [Indonesian (Indonesia, `id`) - v1.16](README.id.md)
+- [Italiano (Italiano, `it`) - v1.19](README.it.md)
+- [日本語 (Japanese, `jp`) - v1.19](README.jp.md)
 - [한국어 (Korean, `ko`) - v1.11](README.ko.md)
-- [português brasileiro (Brazilian Portuguese, `pt-BR`) - v1.12.1](README.pt-br.md)
-- [简体中文 (Simplified Chinese, `zh-Hans`) - v1.16](README.zh-Hans.md)
+- [Português Brasileiro (Brazilian Portuguese, `pt-BR`) - v1.19](README.pt-br.md)
+- [Español (Spanish, `sp`) - v1.17](README.sp.md)
+- [简体中文 (Simplified Chinese, `zh-Hans`) - v1.17](README.zh-Hans.md)
 - [繁體中文 (Traditional Chinese, `zh-Hant`) - v1.15](README.zh-Hant.md)
+- [Turkish (Turkish, `tr`) - v1.18](README.tr.md)
 
 Only this README file is guaranteed to be up-to-date.

README.pt-br.md

@@ -1,16 +1,16 @@
-_Only the original [README](README.md) is guaranteed to be up-to-date._
+_Apenas o [README](README.md) original é garantido estar atualizado._
 
-# scrcpy (v1.12.1)
+# scrcpy (v1.19)
 
-Esta aplicação fornece visualização e controle de dispositivos Android conectados via
-USB (ou [via TCP/IP][article-tcpip]). Não requer nenhum acesso root.
+Esta aplicação fornece exibição e controle de dispositivos Android conectados via
+USB (ou [via TCP/IP][article-tcpip]). Não requer nenhum acesso _root_.
 Funciona em _GNU/Linux_, _Windows_ e _macOS_.
 
 ![screenshot](assets/screenshot-debian-600.jpg)
 
 Foco em:
 
- - **leveza** (Nativo, mostra apenas a tela do dispositivo)
+ - **leveza** (nativo, mostra apenas a tela do dispositivo)
  - **performance** (30~60fps)
  - **qualidade** (1920×1080 ou acima)
  - **baixa latência** ([35~70ms][lowlatency])
@@ -22,36 +22,53 @@ Foco em:
 
 ## Requisitos
 
-O Dispositivo Android requer pelo menos a API 21 (Android 5.0).
+O dispositivo Android requer pelo menos a API 21 (Android 5.0).
 
-
-Tenha certeza de ter [ativado a depuração USB][enable-adb] no(s) seu(s) dispositivo(s).
+Tenha certeza de ter [ativado a depuração adb][enable-adb] no(s) seu(s) dispositivo(s).
 
 [enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
 
-
-Em alguns dispositivos, você também precisará ativar [uma opção adicional][control] para controlá-lo usando o teclado e mouse.
+Em alguns dispositivos, você também precisa ativar [uma opção adicional][control] para
+controlá-lo usando teclado e mouse.
 
 [control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
 
 
-## Obtendo o app
+## Obter o app
+
+<a href="https://repology.org/project/scrcpy/versions"><img src="https://repology.org/badge/vertical-allrepos/scrcpy.svg" alt="Packaging status" align="right"></a>
+
+### Sumário
+
+ - Linux: `apt install scrcpy`
+ - Windows: [baixar][direct-win64]
+ - macOS: `brew install scrcpy`
+
+  Compilar pelos arquivos fontes: [BUILD] ([processo simplificado][BUILD_simple])
+
+[BUILD]: BUILD.md
+[BUILD_simple]: BUILD.md#simple
 
 
 ### Linux
 
-No Debian (_em testes_ e _sid_ por enquanto):
+No Debian (_testing_ e _sid_ por enquanto) e Ubuntu (20.04):
 
 ```
 apt install scrcpy
 ```
 
-O pacote [Snap] está disponível: [`scrcpy`][snap-link].
+Um pacote [Snap] está disponível: [`scrcpy`][snap-link].
 
 [snap-link]: https://snapstats.org/snaps/scrcpy
 
 [snap]: https://en.wikipedia.org/wiki/Snappy_(package_manager)
 
+Para Fedora, um pacote [COPR] está disponível: [`scrcpy`][copr-link].
+
+[COPR]: https://fedoraproject.org/wiki/Category:Copr
+[copr-link]: https://copr.fedorainfracloud.org/coprs/zeno/scrcpy/
+
 Para Arch Linux, um pacote [AUR] está disponível: [`scrcpy`][aur-link].
 
 [AUR]: https://wiki.archlinux.org/index.php/Arch_User_Repository
@@ -62,21 +79,17 @@ Para Gentoo, uma [Ebuild] está disponível: [`scrcpy/`][ebuild-link].
 [Ebuild]: https://wiki.gentoo.org/wiki/Ebuild
 [ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy
 
-
-Você também pode [compilar a aplicação manualmente][BUILD] (não se preocupe, não é tão difícil).
+Você também pode [compilar o app manualmente][BUILD] ([processo simplificado][BUILD_simple]).
 
 
 ### Windows
 
-Para Windows, para simplicidade, um arquivo pré-compilado com todas as dependências
+Para Windows, por simplicidade, um arquivo pré-compilado com todas as dependências
 (incluindo `adb`) está disponível:
 
- - [`scrcpy-win64-v1.12.1.zip`][direct-win64]  
-   _(SHA-256: 57d34b6d16cfd9fe169bc37c4df58ebd256d05c1ea3febc63d9cb0a027ab47c9)_
+ - [README](README.md#windows)
 
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.12.1/scrcpy-win64-v1.12.1.zip
-
-Também disponível em [Chocolatey]:
+Também está disponível em [Chocolatey]:
 
 [Chocolatey]: https://chocolatey.org/
 
@@ -94,12 +107,12 @@ scoop install adb    # se você ainda não o tem
 
 [Scoop]: https://scoop.sh
 
-Você também pode [compilar a aplicação manualmente][BUILD].
+Você também pode [compilar o app manualmente][BUILD].
 
 
 ### macOS
 
-A aplicação está disponível em [Homebrew]. Apenas a instale:
+A aplicação está disponível em [Homebrew]. Apenas instale-a:
 
 [Homebrew]: https://brew.sh/
 
@@ -107,18 +120,27 @@ A aplicação está disponível em [Homebrew]. Apenas a instale:
 brew install scrcpy
 ```
 
-Você precisa do `adb`, acessível através do seu `PATH`. Se você ainda não o tem:
+Você precisa do `adb`, acessível pelo seu `PATH`. Se você ainda não o tem:
 
 ```bash
-brew cask install android-platform-tools
+brew install android-platform-tools
 ```
 
-Você também pode [compilar a aplicação manualmente][BUILD].
+Está também disponivel em [MacPorts], que prepara o adb para você:
+
+```bash
+sudo port install scrcpy
+```
+
+[MacPorts]: https://www.macports.org/
+
+
+Você também pode [compilar o app manualmente][BUILD].
 
 
 ## Executar
 
-Plugue um dispositivo Android e execute:
+Conecte um dispositivo Android e execute:
 
 ```bash
 scrcpy
@@ -134,53 +156,91 @@ scrcpy --help
 
 ### Configuração de captura
 
-#### Redução de tamanho
+#### Reduzir tamanho
 
 Algumas vezes, é útil espelhar um dispositivo Android em uma resolução menor para
-aumentar performance.
+aumentar a performance.
 
-Para limitar ambos(largura e altura) para algum valor (ex: 1024):
+Para limitar ambos (largura e altura) para algum valor (ex: 1024):
 
 ```bash
 scrcpy --max-size 1024
-scrcpy -m 1024  # versão reduzida
+scrcpy -m 1024  # versão curta
 ```
 
 A outra dimensão é calculada para que a proporção do dispositivo seja preservada.
-Dessa forma, um dispositivo em 1920x1080 será espelhado em 1024x576.
+Dessa forma, um dispositivo de 1920x1080 será espelhado em 1024x576.
 
 
-#### Mudanças no bit-rate
+#### Mudar bit-rate
 
-O Padrão de bit-rate é 8 mbps. Para mudar o bitrate do vídeo (ex: para 2 Mbps):
+O bit-rate padrão é 8 Mbps. Para mudar o bit-rate do vídeo (ex: para 2 Mbps):
 
 ```bash
 scrcpy --bit-rate 2M
-scrcpy -b 2M  # versão reduzida
+scrcpy -b 2M  # versão curta
 ```
 
-#### Limitar frame rates
+#### Limitar frame rate
 
-Em dispositivos com Android >= 10, a captura de frame rate pode ser limitada:
+O frame rate de captura pode ser limitado:
 
 ```bash
 scrcpy --max-fps 15
 ```
 
+Isso é oficialmente suportado desde o Android 10, mas pode funcionar em versões anteriores.
+
 #### Cortar
 
 A tela do dispositivo pode ser cortada para espelhar apenas uma parte da tela.
 
-Isso é útil por exemplo, ao espelhar apenas um olho do Oculus Go:
+Isso é útil por exemplo, para espelhar apenas um olho do Oculus Go:
 
 ```bash
 scrcpy --crop 1224:1440:0:0   # 1224x1440 no deslocamento (0,0)
 ```
 
-Se `--max-size` também for especificado, redimensionar é aplicado após os cortes.
+Se `--max-size` também for especificado, o redimensionamento é aplicado após o corte.
 
 
-### Gravando
+#### Travar orientação do vídeo
+
+
+Para travar a orientação do espelhamento:
+
+```bash
+scrcpy --lock-video-orientation     # orientação inicial (Atual)
+scrcpy --lock-video-orientation=0   # orientação natural
+scrcpy --lock-video-orientation=1   # 90° sentido anti-horário
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 90° sentido horário
+```
+
+Isso afeta a orientação de gravação.
+
+A [janela também pode ser rotacionada](#rotação) independentemente.
+
+
+#### Encoder
+
+Alguns dispositivos têm mais de um encoder, e alguns deles podem causar problemas ou
+travar. É possível selecionar um encoder diferente:
+
+```bash
+scrcpy --encoder OMX.qcom.video.encoder.avc
+```
+
+Para listar os encoders disponíveis, você pode passar um nome de encoder inválido, o
+erro dará os encoders disponíveis:
+
+```bash
+scrcpy --encoder _
+```
+
+### Captura
+
+#### Gravando
 
 É possível gravar a tela enquanto ocorre o espelhamento:
 
@@ -194,65 +254,157 @@ Para desativar o espelhamento durante a gravação:
 ```bash
 scrcpy --no-display --record file.mp4
 scrcpy -Nr file.mkv
-# interrompe a gravação com Ctrl+C
-# Ctrl+C não encerrar propriamente no Windows, então desconecte o dispositivo
+# interrompa a gravação com Ctrl+C
 ```
 
-"Frames pulados" são gravados, mesmo que não sejam mostrado em tempo real (por motivos de performance).
-Frames tem seu _horário_ _carimbado_ no dispositivo, então [Variação de atraso nos pacotes] não impacta na gravação do arquivo.
+"Frames pulados" são gravados, mesmo que não sejam exibidos em tempo real (por
+motivos de performance). Frames têm seu _horário carimbado_ no dispositivo, então [variação de atraso nos
+pacotes][packet delay variation] não impacta o arquivo gravado.
 
-[Variação de atraso de pacote]: https://en.wikipedia.org/wiki/Packet_delay_variation
+[packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
 
 
+#### v4l2loopback
+
+Em Linux, é possível enviar a transmissão do video para um disposiivo v4l2 loopback, assim
+o dispositivo Android pode ser aberto como uma webcam por qualquer ferramneta capaz de v4l2
+
+The module `v4l2loopback` must be installed:
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+Para criar um dispositivo v4l2:
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+Isso criara um novo dispositivo de vídeo em `/dev/videoN`, onde `N` é uma integer
+(mais [opções](https://github.com/umlaeute/v4l2loopback#options) estão disponiveis
+para criar varios dispositivos ou dispositivos com IDs específicas).
+
+Para listar os dispositivos disponíveis:
+
+```bash
+# requer o pacote v4l-utils
+v4l2-ctl --list-devices
+
+# simples, mas pode ser suficiente
+ls /dev/video*
+```
+
+Para iniciar o scrcpy usando o coletor v4l2 (sink):
+
+```bash
+scrcpy --v4l2-sink=/dev/videoN
+scrcpy --v4l2-sink=/dev/videoN --no-display  # desativa a janela espelhada
+scrcpy --v4l2-sink=/dev/videoN -N            # versão curta
+```
+
+(troque `N` pelo ID do dipositivo, verifique com `ls /dev/video*`)
+
+Uma vez ativado, você pode abrir suas trasmissões de videos com uma ferramenta capaz de v4l2:
+
+```bash
+ffplay -i /dev/videoN
+vlc v4l2:///dev/videoN   # VLC pode adicionar um pouco de atraso de buffering
+```
+
+Por exemplo, você pode capturar o video dentro do [OBS].
+
+[OBS]: https://obsproject.com/
+
+
+#### Buffering
+
+É possivel adicionar buffering. Isso aumenta a latência, mas reduz a tenção (jitter) (veja
+[#2464]).
+
+[#2464]: https://github.com/Genymobile/scrcpy/issues/2464
+
+A opção éta disponivel para buffering de exibição:
+
+```bash
+scrcpy --display-buffer=50  # adiciona 50 ms de buffering para a exibição
+```
+
+e coletor V4L2:
+
+```bash
+scrcpy --v4l2-buffer=500    # adiciona 500 ms de buffering para coletor V4L2
+```
+
+,
 ### Conexão
 
-#### Wireless/Sem fio
+#### Sem fio
 
-_Scrcpy_ usa `adb` para se comunicar com o dispositivo, e `adb` pode [conectar-se] à um dispositivo via TCP/IP:
+_Scrcpy_ usa `adb` para se comunicar com o dispositivo, e `adb` pode [conectar-se][connect] a um
+dispositivo via TCP/IP:
+
+1. Conecte o dispositivo no mesmo Wi-Fi do seu computador.
+2. Pegue o endereço IP do seu dispositivo, em Configurações → Sobre o telefone → Status, ou
+   executando este comando:
+
+    ```bash
+    adb shell ip route | awk '{print $9}'
+    ```
 
-1. Conecte o dispositivo a mesma rede Wi-Fi do seu computador.
-2. Pegue o endereço de IP do seu dispositivo (Em Configurações → Sobre o Telefone → Status).
 3. Ative o adb via TCP/IP no seu dispositivo: `adb tcpip 5555`.
-4. Desplugue seu dispositivo.
-5. Conecte-se ao seu dispositivo: `adb connect DEVICE_IP:5555` _(substitua o `DEVICE_IP`)_.
+4. Desconecte seu dispositivo.
+5. Conecte-se ao seu dispositivo: `adb connect DEVICE_IP:5555` _(substitua `DEVICE_IP`)_.
 6. Execute `scrcpy` como de costume.
 
 Pode ser útil diminuir o bit-rate e a resolução:
 
 ```bash
 scrcpy --bit-rate 2M --max-size 800
-scrcpy -b2M -m800  # versão reduzida
+scrcpy -b2M -m800  # versão curta
 ```
 
-[conectar-se]: https://developer.android.com/studio/command-line/adb.html#wireless
+[connect]: https://developer.android.com/studio/command-line/adb.html#wireless
 
 
-#### N-dispositivos
+#### Múltiplos dispositivos
 
-Se alguns dispositivos estão listados em `adb devices`, você precisa especificar o _serial_:
+Se vários dispositivos são listados em `adb devices`, você deve especificar o _serial_:
 
 ```bash
 scrcpy --serial 0123456789abcdef
-scrcpy -s 0123456789abcdef  # versão reduzida
+scrcpy -s 0123456789abcdef  # versão curta
 ```
 
 Se o dispositivo está conectado via TCP/IP:
 
 ```bash
 scrcpy --serial 192.168.0.1:5555
-scrcpy -s 192.168.0.1:5555  # versão reduzida
+scrcpy -s 192.168.0.1:5555  # versão curta
 ```
 
-Você pode iniciar algumas instâncias do _scrcpy_ para alguns dispositivos.
+Você pode iniciar várias instâncias do _scrcpy_ para vários dispositivos.
 
-#### Conexão via SSH
+#### Iniciar automaticamente quando dispositivo é conectado
 
-Para conectar-se à um dispositivo remoto, é possível se conectar um cliente local `adb`  à um servidor `adb` remoto (contanto que eles usem a mesma versão do protocolo _adb_):
+Você pode usar [AutoAdb]:
 
 ```bash
-adb kill-server    # encerra o servidor local na 5037
+autoadb scrcpy -s '{}'
+```
+
+[AutoAdb]: https://github.com/rom1v/autoadb
+
+#### Túnel SSH
+
+Para conectar-se a um dispositivo remoto, é possível conectar um cliente `adb` local a
+um servidor `adb` remoto (contanto que eles usem a mesma versão do protocolo
+_adb_):
+
+```bash
+adb kill-server    # encerra o servidor adb local em 5037
 ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
-# mantém isso aberto
+# mantenha isso aberto
 ```
 
 De outro terminal:
@@ -261,17 +413,33 @@ De outro terminal:
 scrcpy
 ```
 
-Igual para conexões sem fio, pode ser útil reduzir a qualidade:
+Para evitar ativar o encaminhamento de porta remota, você pode forçar uma conexão
+de encaminhamento (note o `-L` em vez de `-R`):
+
+```bash
+adb kill-server    # encerra o servidor adb local em 5037
+ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
+# mantenha isso aberto
+```
+
+De outro terminal:
+
+```bash
+scrcpy --force-adb-forward
+```
+
+
+Igual a conexões sem fio, pode ser útil reduzir a qualidade:
 
 ```
 scrcpy -b2M -m800 --max-fps 15
 ```
 
-### Configurações de Janela
+### Configuração de janela
 
 #### Título
 
-Por padrão, o título da janela é o modelo do dispositivo. Isto pode ser mudado:
+Por padrão, o título da janela é o modelo do dispositivo. Isso pode ser mudado:
 
 ```bash
 scrcpy --window-title 'Meu dispositivo'
@@ -287,15 +455,15 @@ scrcpy --window-x 100 --window-y 100 --window-width 800 --window-height 600
 
 #### Sem bordas
 
-Para desativar decorações da janela:
+Para desativar decorações de janela:
 
 ```bash
 scrcpy --window-borderless
 ```
 
-#### Sempre visível
+#### Sempre no topo
 
-Para manter a janela do scrcpy sempre visível:
+Para manter a janela do scrcpy sempre no topo:
 
 ```bash
 scrcpy --always-on-top
@@ -307,53 +475,119 @@ A aplicação pode ser iniciada diretamente em tela cheia:
 
 ```bash
 scrcpy --fullscreen
-scrcpy -f  # versão reduzida
+scrcpy -f  # versão curta
 ```
 
-Tela cheia pode ser alternada dinamicamente com `Ctrl`+`f`.
+Tela cheia pode ser alternada dinamicamente com <kbd>MOD</kbd>+<kbd>f</kbd>.
+
+#### Rotação
+
+A janela pode ser rotacionada:
+
+```bash
+scrcpy --rotation 1
+```
+
+Valores possíveis são:
+ - `0`: sem rotação
+ - `1`: 90 graus sentido anti-horário
+ - `2`: 180 graus
+ - `3`: 90 graus sentido horário
+
+A rotação também pode ser mudada dinamicamente com <kbd>MOD</kbd>+<kbd>←</kbd>
+_(esquerda)_ e <kbd>MOD</kbd>+<kbd>→</kbd> _(direita)_.
+
+Note que _scrcpy_ controla 3 rotações diferentes:
+ - <kbd>MOD</kbd>+<kbd>r</kbd> requisita ao dispositivo para mudar entre retrato
+   e paisagem (a aplicação em execução pode se recusar, se ela não suporta a
+   orientação requisitada).
+ - [`--lock-video-orientation`](#travar-orientação-do-vídeo) muda a orientação de
+   espelhamento (a orientação do vídeo enviado pelo dispositivo para o
+   computador). Isso afeta a gravação.
+ - `--rotation` (ou <kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>)
+   rotaciona apenas o conteúdo da janela. Isso afeta apenas a exibição, não a
+   gravação.
 
 
 ### Outras opções de espelhamento
 
 #### Apenas leitura
 
-Para desativar controles (tudo que possa interagir com o dispositivo: teclas de entrada, eventos de mouse, arrastar e soltar arquivos):
+Para desativar controles (tudo que possa interagir com o dispositivo: teclas de entrada,
+eventos de mouse, arrastar e soltar arquivos):
 
 ```bash
 scrcpy --no-control
 scrcpy -n
 ```
 
-#### Desligar a tela
+#### Display
 
-É possível desligar a tela do dispositivo durante o início do espelhamento com uma opção de linha de comando:
+Se vários displays estão disponíveis, é possível selecionar o display para
+espelhar:
+
+```bash
+scrcpy --display 1
+```
+
+A lista de IDs dos displays pode ser obtida por:
+
+```
+adb shell dumpsys display   # busca "mDisplayId=" na saída
+```
+
+O display secundário pode apenas ser controlado se o dispositivo roda pelo menos Android
+10 (caso contrário é espelhado como apenas leitura).
+
+
+#### Permanecer ativo
+
+Para evitar que o dispositivo seja suspenso após um delay quando o dispositivo é conectado:
+
+```bash
+scrcpy --stay-awake
+scrcpy -w
+```
+
+O estado inicial é restaurado quando o scrcpy é fechado.
+
+
+#### Desligar tela
+
+É possível desligar a tela do dispositivo durante o início do espelhamento com uma
+opção de linha de comando:
 
 ```bash
 scrcpy --turn-screen-off
 scrcpy -S
 ```
 
-Ou apertando `Ctrl`+`o` durante qualquer momento.
+Ou apertando <kbd>MOD</kbd>+<kbd>o</kbd> a qualquer momento.
 
-Para ligar novamente, pressione `POWER` (ou `Ctrl`+`p`).
+Para ligar novamente, pressione <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>.
 
-#### Frames expirados de renderização
+No Android, o botão de `POWER` sempre liga a tela. Por conveniência, se
+`POWER` é enviado via scrcpy (via clique-direito ou <kbd>MOD</kbd>+<kbd>p</kbd>), ele
+forçará a desligar a tela após um delay pequeno (numa base de melhor esforço).
+O botão `POWER` físico ainda causará a tela ser ligada.
 
-Por padrão, para minimizar a latência, _scrcpy_ sempre renderiza o último frame decodificado disponível e descarta o anterior.
-
-Para forçar a renderização de todos os frames ( com o custo de aumento de latência), use:
+Também pode ser útil evitar que o dispositivo seja suspenso:
 
 ```bash
-scrcpy --render-expired-frames
+scrcpy --turn-screen-off --stay-awake
+scrcpy -Sw
 ```
 
+
 #### Mostrar toques
 
-Para apresentações, pode ser útil mostrar toques físicos(dispositivo físico).
+Para apresentações, pode ser útil mostrar toques físicos (no dispositivo
+físico).
 
-Android fornece esta funcionalidade nas _Opções do Desenvolvedor_.
+Android fornece esta funcionalidade nas _Opções do desenvolvedor_.
 
-_Scrcpy_ fornece esta opção de ativar esta funcionalidade no início e desativar no encerramento:
+_Scrcpy_ fornece esta opção de ativar esta funcionalidade no início e restaurar o
+valor inicial no encerramento:
 
 ```bash
 scrcpy --show-touches
@@ -363,59 +597,137 @@ scrcpy -t
 Note que isto mostra apenas toques _físicos_ (com o dedo no dispositivo).
 
 
+#### Desativar descanso de tela
+
+Por padrão, scrcpy não evita que o descanso de tela rode no computador.
+
+Para desativá-lo:
+
+```bash
+scrcpy --disable-screensaver
+```
+
+
 ### Controle de entrada
 
 #### Rotacionar a tela do dispositivo
 
-Pressione `Ctrl`+`r` para mudar entre os modos Retrato e Paisagem.
+Pressione <kbd>MOD</kbd>+<kbd>r</kbd> para mudar entre os modos retrato e
+paisagem.
 
-Note que só será rotacionado se a aplicação em primeiro plano tiver suporte para o modo requisitado.
+Note que só será rotacionado se a aplicação em primeiro plano suportar a
+orientação requisitada.
 
-#### Copiar-Colar
+#### Copiar-colar
 
-É possível sincronizar áreas de transferência entre computador e o dispositivo,
-para ambas direções:
+Sempre que a área de transferência do Android muda, é automaticamente sincronizada com a
+área de transferência do computador.
 
- - `Ctrl`+`c` copia a área de transferência do dispositivo para a área de trasferência do computador;
- - `Ctrl`+`Shift`+`v` copia a área de transferência do computador para a área de transferência do dispositivo;
- - `Ctrl`+`v` _cola_ a área de transferência do computador como uma sequência de eventos de texto (mas
-   quebra caracteres não-ASCII).
+Qualquer atalho com <kbd>Ctrl</kbd> é encaminhado para o dispositivo. Em particular:
+ - <kbd>Ctrl</kbd>+<kbd>c</kbd> tipicamente copia
+ - <kbd>Ctrl</kbd>+<kbd>x</kbd> tipicamente recorta
+ - <kbd>Ctrl</kbd>+<kbd>v</kbd> tipicamente cola (após a sincronização de área de transferência
+   computador-para-dispositivo)
 
-#### Preferências de injeção de texto
+Isso tipicamente funciona como esperado.
 
-Existe dois tipos de [eventos][textevents] gerados ao digitar um texto:
- - _eventos de teclas_, sinalizando que a tecla foi pressionada ou solta;
+O comportamento de fato depende da aplicação ativa, no entanto. Por exemplo,
+_Termux_ envia SIGINT com <kbd>Ctrl</kbd>+<kbd>c</kbd>, e _K-9 Mail_
+compõe uma nova mensagem.
+
+Para copiar, recortar e colar em tais casos (mas apenas suportado no Android >= 7):
+ - <kbd>MOD</kbd>+<kbd>c</kbd> injeta `COPY`
+ - <kbd>MOD</kbd>+<kbd>x</kbd> injeta `CUT`
+ - <kbd>MOD</kbd>+<kbd>v</kbd> injeta `PASTE` (após a sincronização de área de transferência
+   computador-para-dispositivo)
+
+Em adição, <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> permite injetar o
+texto da área de transferência do computador como uma sequência de eventos de tecla. Isso é útil quando o
+componente não aceita colar texto (por exemplo no _Termux_), mas pode
+quebrar conteúdo não-ASCII.
+
+**ADVERTÊNCIA:** Colar a área de transferência do computador para o dispositivo (tanto via
+<kbd>Ctrl</kbd>+<kbd>v</kbd> quanto <kbd>MOD</kbd>+<kbd>v</kbd>) copia o conteúdo
+para a área de transferência do dispositivo. Como consequência, qualquer aplicação Android pode ler
+o seu conteúdo. Você deve evitar colar conteúdo sensível (como senhas) dessa
+forma.
+
+Alguns dispositivos não se comportam como esperado quando a área de transferência é definida
+programaticamente. Uma opção `--legacy-paste` é fornecida para mudar o comportamento
+de <kbd>Ctrl</kbd>+<kbd>v</kbd> e <kbd>MOD</kbd>+<kbd>v</kbd> para que eles
+também injetem o texto da área de transferência do computador como uma sequência de eventos de tecla (da mesma
+forma que <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>).
+
+#### Pinçar para dar zoom
+
+Para simular "pinçar para dar zoom": <kbd>Ctrl</kbd>+_clicar-e-mover_.
+
+Mais precisamente, segure <kbd>Ctrl</kbd> enquanto pressiona o botão de clique-esquerdo. Até que
+o botão de clique-esquerdo seja liberado, todos os movimentos do mouse ampliar e rotacionam o
+conteúdo (se suportado pelo app) relativo ao centro da tela.
+
+Concretamente, scrcpy gera eventos adicionais de toque de um "dedo virtual" em
+uma posição invertida em relação ao centro da tela.
+
+
+#### Preferência de injeção de texto
+
+Existem dois tipos de [eventos][textevents] gerados ao digitar um texto:
+ - _eventos de tecla_, sinalizando que a tecla foi pressionada ou solta;
  - _eventos de texto_, sinalizando que o texto foi inserido.
 
-Por padrão, letras são injetadas usando eventos de teclas, assim teclados comportam-se
-como esperado em jogos (normalmente para tecladas WASD)
+Por padrão, letras são injetadas usando eventos de tecla, assim o teclado comporta-se
+como esperado em jogos (normalmente para teclas WASD).
 
-Mas isto pode [causar problemas][prefertext]. Se você encontrar tal problema,
-pode evitá-lo usando:
+Mas isso pode [causar problemas][prefertext]. Se você encontrar tal problema, você
+pode evitá-lo com:
 
 ```bash
 scrcpy --prefer-text
 ```
 
-(mas isto vai quebrar o comportamento do teclado em jogos)
+(mas isso vai quebrar o comportamento do teclado em jogos)
 
 [textevents]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-text-input
 [prefertext]: https://github.com/Genymobile/scrcpy/issues/650#issuecomment-512945343
 
 
-### Transferência de arquivo
+#### Repetir tecla
+
+Por padrão, segurar uma tecla gera eventos de tecla repetidos. Isso pode causar
+problemas de performance em alguns jogos, onde esses eventos são inúteis de qualquer forma.
+
+Para evitar o encaminhamento eventos de tecla repetidos:
+
+```bash
+scrcpy --no-key-repeat
+```
+
+
+#### Clique-direito e clique-do-meio
+
+Por padrão, clique-direito dispara BACK (ou POWER) e clique-do-meio dispara
+HOME. Para desabilitar esses atalhos e encaminhar os cliques para o dispositivo:
+
+```bash
+scrcpy --forward-all-clicks
+```
+
+
+### Soltar arquivo
 
 #### Instalar APK
 
-Para instalar um APK, arraste e solte o arquivo APK(com extensão `.apk`) na janela _scrcpy_.
+Para instalar um APK, arraste e solte o arquivo APK (com extensão `.apk`) na janela
+_scrcpy_.
 
 Não existe feedback visual, um log é imprimido no console.
 
 
-#### Enviar arquivo para o dispositivo
+#### Enviar arquivo para dispositivo
 
-Para enviar um arquivo para o diretório `/sdcard/` no dispositivo, arraste e solte um arquivo não APK para a janela do
-_scrcpy_.
+Para enviar um arquivo para `/sdcard/Download/` no dispositivo, arraste e solte um arquivo (não-APK) para a
+janela do _scrcpy_.
 
 Não existe feedback visual, um log é imprimido no console.
 
@@ -428,47 +740,86 @@ scrcpy --push-target /sdcard/foo/bar/
 
 ### Encaminhamento de áudio
 
-Áudio não é encaminhando pelo _scrcpy_. Use [USBaudio] (Apenas linux).
+Áudio não é encaminhado pelo _scrcpy_. Use [sndcpy].
 
 Também veja [issue #14].
 
-[USBaudio]: https://github.com/rom1v/usbaudio
+[sndcpy]: https://github.com/rom1v/sndcpy
 [issue #14]: https://github.com/Genymobile/scrcpy/issues/14
 
 
 ## Atalhos
 
- | Ação                                                          |   Atalho                        |   Atalho (macOS)
- | ------------------------------------------------------------- |:------------------------------- |:-----------------------------
- | Alternar para modo de tela cheia                              | `Ctrl`+`f`                      | `Cmd`+`f`
- | Redimensionar janela para pixel-perfect(Escala 1:1)           | `Ctrl`+`g`                      | `Cmd`+`g`
- | Redimensionar janela para tirar as bordas pretas              | `Ctrl`+`x` \| _Clique-duplo¹_   | `Cmd`+`x`  \| _Clique-duplo¹_
- | Clicar em `HOME`                                              | `Ctrl`+`h` \| _Clique-central_  | `Ctrl`+`h` \| _Clique-central_
- | Clicar em `BACK`                                              | `Ctrl`+`b` \| _Clique-direito²_ | `Cmd`+`b`  \| _Clique-direito²_
- | Clicar em `APP_SWITCH`                                        | `Ctrl`+`s`                      | `Cmd`+`s`
- | Clicar em `MENU`                                              | `Ctrl`+`m`                      | `Ctrl`+`m`
- | Clicar em `VOLUME_UP`                                         | `Ctrl`+`↑` _(cima)_             | `Cmd`+`↑` _(cima)_
- | Clicar em `VOLUME_DOWN`                                       | `Ctrl`+`↓` _(baixo)_            | `Cmd`+`↓` _(baixo)_
- | Clicar em `POWER`                                             | `Ctrl`+`p`                      | `Cmd`+`p`
- | Ligar                                                         | _Clique-direito²_               | _Clique-direito²_
- | Desligar a tela do dispositivo                                | `Ctrl`+`o`                      | `Cmd`+`o`
- | Rotacionar tela do dispositivo                                | `Ctrl`+`r`                      | `Cmd`+`r`
- | Expandir painel de notificação                                | `Ctrl`+`n`                      | `Cmd`+`n`
- | Esconder painel de notificação                                | `Ctrl`+`Shift`+`n`              | `Cmd`+`Shift`+`n`
- | Copiar área de transferência do dispositivo para o computador | `Ctrl`+`c`                      | `Cmd`+`c`
- | Colar área de transferência do computador para o dispositivo  | `Ctrl`+`v`                      | `Cmd`+`v`
- | Copiar área de transferência do computador para dispositivo   | `Ctrl`+`Shift`+`v`              | `Cmd`+`Shift`+`v`
- | Ativar/desativar contador de FPS(Frames por segundo)          | `Ctrl`+`i`                      | `Cmd`+`i`
+Na lista a seguir, <kbd>MOD</kbd> é o modificador de atalho. Por padrão, é
+<kbd>Alt</kbd> (esquerdo) ou <kbd>Super</kbd> (esquerdo).
 
-_¹Clique-duplo em bordas pretas para removê-las._  
-_²Botão direito liga a tela se ela estiver desligada, clique BACK para o contrário._
+Ele pode ser mudado usando `--shortcut-mod`. Possíveis teclas são `lctrl`, `rctrl`,
+`lalt`, `ralt`, `lsuper` e `rsuper`. Por exemplo:
+
+```bash
+# usar RCtrl para atalhos
+scrcpy --shortcut-mod=rctrl
+
+# usar tanto LCtrl+LAlt quanto LSuper para atalhos
+scrcpy --shortcut-mod=lctrl+lalt,lsuper
+```
+
+_<kbd>[Super]</kbd> é tipicamente a tecla <kbd>Windows</kbd> ou <kbd>Cmd</kbd>._
+
+[Super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button)
+
+ | Ação                                        |   Atalho
+ | ------------------------------------------- |:-----------------------------
+ | Mudar modo de tela cheia                    | <kbd>MOD</kbd>+<kbd>f</kbd>
+ | Rotacionar display para esquerda            | <kbd>MOD</kbd>+<kbd>←</kbd> _(esquerda)_
+ | Rotacionar display para direita             | <kbd>MOD</kbd>+<kbd>→</kbd> _(direita)_
+ | Redimensionar janela para 1:1 (pixel-perfeito) | <kbd>MOD</kbd>+<kbd>g</kbd>
+ | Redimensionar janela para remover bordas pretas | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Clique-duplo-esquerdo¹_
+ | Clicar em `HOME`                            | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Clique-do-meio_
+ | Clicar em `BACK`                            | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Clique-direito²_
+ | Clicar em `APP_SWITCH`                      | <kbd>MOD</kbd>+<kbd>s</kbd> \| _Clique-do-4.°³_
+ | Clicar em `MENU` (desbloquear tela)         | <kbd>MOD</kbd>+<kbd>m</kbd>
+ | Clicar em `VOLUME_UP`                       | <kbd>MOD</kbd>+<kbd>↑</kbd> _(cima)_
+ | Clicar em `VOLUME_DOWN`                     | <kbd>MOD</kbd>+<kbd>↓</kbd> _(baixo)_
+ | Clicar em `POWER`                           | <kbd>MOD</kbd>+<kbd>p</kbd>
+ | Ligar                                       | _Clique-direito²_
+ | Desligar tela do dispositivo (continuar espelhando) | <kbd>MOD</kbd>+<kbd>o</kbd>
+ | Ligar tela do dispositivo                   | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
+ | Rotacionar tela do dispositivo              | <kbd>MOD</kbd>+<kbd>r</kbd>
+ | Expandir painel de notificação              | <kbd>MOD</kbd>+<kbd>n</kbd> \| _Clique-do-5.°³_
+ | Expandir painel de configurção              | <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _Clique-duplo-do-5.°³_
+ | Colapsar paineis                            | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copiar para área de transferência⁴          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Recortar para área de transferência⁴        | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Sincronizar áreas de transferência e colar⁴ | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | Injetar texto da área de transferência do computador | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
+ | Ativar/desativar contador de FPS (em stdout) | <kbd>MOD</kbd>+<kbd>i</kbd>
+ | Pinçar para dar zoom                        | <kbd>Ctrl</kbd>+_Clicar-e-mover_
+
+_¹Clique-duplo-esquerdo na borda preta para remove-la._  
+_²Clique-direito liga a tela caso esteja desligada, pressione BACK caso contrário._  
+_³4.° and 5.° botões do mouse, caso o mouse possua._  
+_⁴Apenas em Android >= 7._
+
+Atalhos com teclas reptidas são executados soltando e precionando a tecla
+uma segunda vez. Por exemplo, para executar "Expandir painel de Configurção":
+
+ 1. Mantenha pressionado <kbd>MOD</kbd>.
+ 2. Depois click duas vezes <kbd>n</kbd>.
+ 3. Finalmente, solte <kbd>MOD</kbd>.
+
+Todos os atalhos <kbd>Ctrl</kbd>+_tecla_ são encaminhados para o dispositivo, para que eles sejam
+tratados pela aplicação ativa.
 
 
 ## Caminhos personalizados
 
-Para usar um binário específico _adb_, configure seu caminho na variável de ambiente `ADB`:
+Para usar um binário _adb_ específico, configure seu caminho na variável de ambiente
+`ADB`:
 
-    ADB=/caminho/para/adb scrcpy
+```bash
+ADB=/caminho/para/adb scrcpy
+```
 
 Para sobrepor o caminho do arquivo `scrcpy-server`, configure seu caminho em
 `SCRCPY_SERVER_PATH`.
@@ -478,7 +829,7 @@ Para sobrepor o caminho do arquivo `scrcpy-server`, configure seu caminho em
 
 ## Por quê _scrcpy_?
 
-Um colega me desafiou a encontrar um nome impronunciável como [gnirehtet].
+Um colega me desafiou a encontrar um nome tão impronunciável quanto [gnirehtet].
 
 [`strcpy`] copia uma **str**ing; `scrcpy` copia uma **scr**een.
 
@@ -490,17 +841,15 @@ Um colega me desafiou a encontrar um nome impronunciável como [gnirehtet].
 
 Veja [BUILD].
 
-[BUILD]: BUILD.md
-
 
 ## Problemas comuns
 
-Veja [FAQ](FAQ.md).
+Veja o [FAQ](FAQ.md).
 
 
 ## Desenvolvedores
 
-Leia a  [developers page].
+Leia a [página dos desenvolvedores][developers page].
 
 [developers page]: DEVELOP.md
 
@@ -508,7 +857,7 @@ Leia a  [developers page].
 ## Licença
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2020 Romain Vimont
+    Copyright (C) 2018-2021 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.sp.md

@@ -0,0 +1,743 @@
+Solo se garantiza que el archivo [README](README.md) original esté actualizado.
+
+# scrcpy (v1.17)
+
+Esta aplicación proporciona imagen y control de un dispositivo Android conectado
+por USB (o [por TCP/IP][article-tcpip]). No requiere acceso _root_.
+Compatible con _GNU/Linux_, _Windows_ y _macOS_.
+
+![screenshot](assets/screenshot-debian-600.jpg)
+
+Sus características principales son:
+
+ - **ligero** (nativo, solo muestra la imagen del dispositivo)
+ - **desempeño** (30~60fps)
+ - **calidad** (1920×1080 o superior)
+ - **baja latencia** ([35~70ms][lowlatency])
+ - **corto tiempo de inicio** (~1 segundo para mostrar la primera imagen)
+ - **no intrusivo** (no se deja nada instalado en el dispositivo)
+
+[lowlatency]: https://github.com/Genymobile/scrcpy/pull/646
+
+
+## Requisitos
+
+El dispositivo Android requiere como mínimo API 21 (Android 5.0).
+
+Asegurate de [habilitar el adb debugging][enable-adb] en tu(s) dispositivo(s).
+
+[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
+
+En algunos dispositivos, también necesitas habilitar [una opción adicional][control] para controlarlo con el teclado y ratón.
+
+[control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
+
+
+## Consigue la app
+
+<a href="https://repology.org/project/scrcpy/versions"><img src="https://repology.org/badge/vertical-allrepos/scrcpy.svg" alt="Packaging status" align="right"></a>
+
+### Resumen
+
+ - Linux: `apt install scrcpy`
+ - Windows: [download](README.md#windows)
+ - macOS: `brew install scrcpy`
+
+Construir desde la fuente: [BUILD] ([proceso simplificado][BUILD_simple])
+
+[BUILD]: BUILD.md
+[BUILD_simple]: BUILD.md#simple
+
+
+### Linux
+
+En Debian (_test_ y _sid_ por ahora) y Ubuntu (20.04):
+
+```
+apt install scrcpy
+```
+
+Hay un paquete [Snap]: [`scrcpy`][snap-link].
+
+[snap-link]: https://snapstats.org/snaps/scrcpy
+
+[snap]: https://en.wikipedia.org/wiki/Snappy_(package_manager)
+
+Para Fedora, hay un paquete [COPR]: [`scrcpy`][copr-link].
+
+[COPR]: https://fedoraproject.org/wiki/Category:Copr
+[copr-link]: https://copr.fedorainfracloud.org/coprs/zeno/scrcpy/
+
+Para Arch Linux, hay un paquete [AUR]: [`scrcpy`][aur-link].
+
+[AUR]: https://wiki.archlinux.org/index.php/Arch_User_Repository
+[aur-link]: https://aur.archlinux.org/packages/scrcpy/
+
+Para Gentoo, hay un paquete [Ebuild]: [`scrcpy/`][ebuild-link].
+
+[Ebuild]: https://wiki.gentoo.org/wiki/Ebuild
+[ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy
+
+También puedes [construir la aplicación manualmente][BUILD] ([proceso simplificado][BUILD_simple]).
+
+
+### Windows
+
+Para Windows, por simplicidad, hay un pre-compilado con todas las dependencias
+(incluyendo `adb`):
+
+ - [README](README.md#windows)
+
+También está disponible en [Chocolatey]:
+
+[Chocolatey]: https://chocolatey.org/
+
+```bash
+choco install scrcpy
+choco install adb    # si aún no está instalado
+```
+
+Y en [Scoop]:
+
+```bash
+scoop install scrcpy
+scoop install adb    # si aún no está instalado
+```
+
+[Scoop]: https://scoop.sh
+
+También puedes [construir la aplicación manualmente][BUILD].
+
+
+### macOS
+
+La aplicación está disponible en [Homebrew]. Solo instalala:
+
+[Homebrew]: https://brew.sh/
+
+```bash
+brew install scrcpy
+```
+
+Necesitarás `adb`, accesible desde `PATH`. Si aún no lo tienes:
+
+```bash
+brew install android-platform-tools
+```
+
+También está disponible en [MacPorts], que configurará el adb automáticamente:
+
+```bash
+sudo port install scrcpy
+```
+
+[MacPorts]: https://www.macports.org/
+
+
+También puedes [construir la aplicación manualmente][BUILD].
+
+
+## Ejecutar
+
+Enchufa el dispositivo Android, y ejecuta:
+
+```bash
+scrcpy
+```
+
+Acepta argumentos desde la línea de comandos, listados en:
+
+```bash
+scrcpy --help
+```
+
+## Características
+
+### Capturar configuración
+
+#### Reducir la definición
+
+A veces es útil reducir la definición de la imagen del dispositivo Android para aumentar el desempeño.
+
+Para limitar el ancho y la altura a un valor específico (ej. 1024):
+
+```bash
+scrcpy --max-size 1024
+scrcpy -m 1024  # versión breve
+```
+
+La otra dimensión es calculada para conservar el aspect ratio del dispositivo.
+De esta forma, un dispositivo en 1920×1080 será transmitido a 1024×576.
+
+
+#### Cambiar el bit-rate
+
+El bit-rate por defecto es 8 Mbps. Para cambiar el bit-rate del video (ej. a 2 Mbps):
+
+```bash
+scrcpy --bit-rate 2M
+scrcpy -b 2M  # versión breve
+```
+
+#### Limitar los fps
+
+El fps puede ser limitado:
+
+```bash
+scrcpy --max-fps 15
+```
+
+Es oficialmente soportado desde Android 10, pero puede funcionar en versiones anteriores.
+
+#### Recortar
+
+La imagen del dispositivo puede ser recortada para transmitir solo una parte de la pantalla.
+
+Por ejemplo, puede ser útil para transmitir la imagen de un solo ojo del Oculus Go:
+
+```bash
+scrcpy --crop 1224:1440:0:0   # 1224x1440 con coordenadas de origen en (0,0)
+```
+
+Si `--max-size` también está especificado, el cambio de tamaño es aplicado después de cortar.
+
+
+#### Fijar la rotación del video
+
+
+Para fijar la rotación de la transmisión:
+
+```bash
+scrcpy --lock-video-orientation 0   # orientación normal
+scrcpy --lock-video-orientation 1   # 90° contrarreloj
+scrcpy --lock-video-orientation 2   # 180°
+scrcpy --lock-video-orientation 3   # 90° sentido de las agujas del reloj
+```
+
+Esto afecta la rotación de la grabación.
+
+La [ventana también puede ser rotada](#rotación) independientemente.
+
+
+#### Codificador
+
+Algunos dispositivos pueden tener más de una rotación, y algunos pueden causar problemas o errores. Es posible seleccionar un codificador diferente:
+
+```bash
+scrcpy --encoder OMX.qcom.video.encoder.avc
+```
+
+Para listar los codificadores disponibles, puedes pasar un nombre de codificador inválido, el error te dará los codificadores disponibles:
+
+```bash
+scrcpy --encoder _
+```
+
+### Grabación
+
+Es posible grabar la pantalla mientras se transmite:
+
+```bash
+scrcpy --record file.mp4
+scrcpy -r file.mkv
+```
+
+Para grabar sin transmitir la pantalla:
+
+```bash
+scrcpy --no-display --record file.mp4
+scrcpy -Nr file.mkv
+# interrumpe la grabación con Ctrl+C
+```
+
+"Skipped frames" son grabados, incluso si no son mostrados en tiempo real (por razones de desempeño). Los frames tienen _marcas de tiempo_ en el dispositivo, por lo que el "[packet delay
+variation]" no impacta el archivo grabado.
+
+[packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
+
+
+### Conexión
+
+#### Inalámbrica
+
+_Scrcpy_ usa `adb` para comunicarse con el dispositivo, y `adb` puede [conectarse] vía TCP/IP:
+
+1. Conecta el dispositivo al mismo Wi-Fi que tu computadora.
+2. Obtén la dirección IP del dispositivo, en Ajustes → Acerca del dispositivo → Estado, o ejecutando este comando:
+
+    ```bash
+    adb shell ip route | awk '{print $9}'
+    ```
+
+3. Habilita adb vía TCP/IP en el dispositivo: `adb tcpip 5555`.
+4. Desenchufa el dispositivo.
+5. Conéctate a tu dispositivo: `adb connect IP_DEL_DISPOSITIVO:5555` _(reemplaza `IP_DEL_DISPOSITIVO`)_.
+6. Ejecuta `scrcpy` con normalidad.
+
+Podría resultar útil reducir el bit-rate y la definición:
+
+```bash
+scrcpy --bit-rate 2M --max-size 800
+scrcpy -b2M -m800  # versión breve
+```
+
+[conectarse]: https://developer.android.com/studio/command-line/adb.html#wireless
+
+
+#### Múltiples dispositivos
+
+Si hay muchos dispositivos listados en `adb devices`, será necesario especificar el _número de serie_:
+
+```bash
+scrcpy --serial 0123456789abcdef
+scrcpy -s 0123456789abcdef  # versión breve
+```
+
+Si el dispositivo está conectado por TCP/IP:
+
+```bash
+scrcpy --serial 192.168.0.1:5555
+scrcpy -s 192.168.0.1:5555  # versión breve
+```
+
+Puedes iniciar múltiples instancias de _scrcpy_ para múltiples dispositivos.
+
+#### Autoiniciar al detectar dispositivo
+
+Puedes utilizar [AutoAdb]:
+
+```bash
+autoadb scrcpy -s '{}'
+```
+
+[AutoAdb]: https://github.com/rom1v/autoadb
+
+#### Túnel SSH
+
+Para conectarse a un dispositivo remoto, es posible conectar un cliente local de `adb` a un servidor remoto `adb` (siempre y cuando utilicen la misma versión de protocolos _adb_):
+
+```bash
+adb kill-server    # cierra el servidor local adb en 5037
+ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
+# conserva este servidor abierto
+```
+
+Desde otra terminal:
+
+```bash
+scrcpy
+```
+
+Para evitar habilitar "remote port forwarding", puedes forzar una "forward connection" (nótese el argumento `-L` en vez de `-R`):
+
+```bash
+adb kill-server    # cierra el servidor local adb en 5037
+ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
+# conserva este servidor abierto
+```
+
+Desde otra terminal:
+
+```bash
+scrcpy --force-adb-forward
+```
+
+
+Al igual que las conexiones inalámbricas, puede resultar útil reducir la calidad:
+
+```
+scrcpy -b2M -m800 --max-fps 15
+```
+
+### Configuración de la ventana
+
+#### Título
+
+Por defecto, el título de la ventana es el modelo del dispositivo. Puede ser modificado:
+
+```bash
+scrcpy --window-title 'My device'
+```
+
+#### Posición y tamaño
+
+La posición y tamaño inicial de la ventana puede ser especificado:
+
+```bash
+scrcpy --window-x 100 --window-y 100 --window-width 800 --window-height 600
+```
+
+#### Sin bordes
+
+Para deshabilitar el diseño de la ventana:
+
+```bash
+scrcpy --window-borderless
+```
+
+#### Siempre adelante
+
+Para mantener la ventana de scrcpy siempre adelante:
+
+```bash
+scrcpy --always-on-top
+```
+
+#### Pantalla completa
+
+La aplicación puede ser iniciada en pantalla completa:
+
+```bash
+scrcpy --fullscreen
+scrcpy -f  # versión breve
+```
+
+Puede entrar y salir de la pantalla completa con la combinación <kbd>MOD</kbd>+<kbd>f</kbd>.
+
+#### Rotación
+
+Se puede rotar la ventana:
+
+```bash
+scrcpy --rotation 1
+```
+
+Los valores posibles son:
+ - `0`: sin rotación
+ - `1`: 90 grados contrarreloj
+ - `2`: 180 grados
+ - `3`: 90 grados en sentido de las agujas del reloj
+
+La rotación también puede ser modificada con la combinación de teclas <kbd>MOD</kbd>+<kbd>←</kbd> _(izquierda)_ y <kbd>MOD</kbd>+<kbd>→</kbd> _(derecha)_.
+
+Nótese que _scrcpy_ maneja 3 diferentes rotaciones:
+ - <kbd>MOD</kbd>+<kbd>r</kbd> solicita al dispositivo cambiar entre vertical y horizontal (la aplicación en uso puede rechazarlo si no soporta la orientación solicitada).
+ - [`--lock-video-orientation`](#fijar-la-rotación-del-video) cambia la rotación de la transmisión (la orientación del video enviado a la PC). Esto afecta a la grabación.
+ - `--rotation` (o <kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>) rota solo el contenido de la imagen. Esto solo afecta a la imagen mostrada, no a la grabación.
+
+
+### Otras opciones menores
+
+#### Solo lectura ("Read-only")
+
+Para deshabilitar los controles (todo lo que interactúe con el dispositivo: eventos del teclado, eventos del mouse, arrastrar y soltar archivos):
+
+```bash
+scrcpy --no-control
+scrcpy -n  # versión breve
+```
+
+#### Pantalla
+
+Si múltiples pantallas están disponibles, es posible elegir cual transmitir:
+
+```bash
+scrcpy --display 1
+```
+
+Los ids de las pantallas se pueden obtener con el siguiente comando:
+
+```bash
+adb shell dumpsys display   # busque "mDisplayId=" en la respuesta
+```
+
+La segunda pantalla solo puede ser manejada si el dispositivo cuenta con Android 10 (en caso contrario será transmitida en el modo solo lectura).
+
+
+#### Permanecer activo
+
+Para evitar que el dispositivo descanse después de un tiempo mientras está conectado:
+
+```bash
+scrcpy --stay-awake
+scrcpy -w  # versión breve
+```
+
+La configuración original se restaura al cerrar scrcpy.
+
+
+#### Apagar la pantalla
+
+Es posible apagar la pantalla mientras se transmite al iniciar con el siguiente comando:
+
+```bash
+scrcpy --turn-screen-off
+scrcpy -S  # versión breve
+```
+
+O presionando <kbd>MOD</kbd>+<kbd>o</kbd> en cualquier momento.
+
+Para volver a prenderla, presione <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>.
+
+En Android, el botón de `POWER` siempre prende la pantalla. Por conveniencia, si `POWER` es enviado vía scrcpy (con click-derecho o <kbd>MOD</kbd>+<kbd>p</kbd>), esto forzará a apagar la pantalla con un poco de atraso (en la mejor de las situaciones). El botón físico `POWER` seguirá prendiendo la pantalla.
+
+También puede resultar útil para evitar que el dispositivo entre en inactividad:
+
+```bash
+scrcpy --turn-screen-off --stay-awake
+scrcpy -Sw  # versión breve
+```
+
+
+#### Renderizar frames vencidos
+
+Por defecto, para minimizar la latencia, _scrcpy_ siempre renderiza el último frame disponible decodificado, e ignora cualquier frame anterior.
+
+Para forzar el renderizado de todos los frames (a costo de posible aumento de latencia), use:
+
+```bash
+scrcpy --render-expired-frames
+```
+
+#### Mostrar clicks
+
+Para presentaciones, puede resultar útil mostrar los clicks físicos (en el dispositivo físicamente).
+
+Android provee esta opción en _Opciones para desarrolladores_.
+
+_Scrcpy_ provee una opción para habilitar esta función al iniciar la aplicación y restaurar el valor original al salir:
+
+```bash
+scrcpy --show-touches
+scrcpy -t  # versión breve
+```
+
+Nótese que solo muestra los clicks _físicos_ (con el dedo en el dispositivo).
+
+
+#### Desactivar protector de pantalla
+
+Por defecto, scrcpy no evita que el protector de pantalla se active en la computadora.
+
+Para deshabilitarlo:
+
+```bash
+scrcpy --disable-screensaver
+```
+
+
+### Control
+
+#### Rotar pantalla del dispositivo
+
+Presione <kbd>MOD</kbd>+<kbd>r</kbd> para cambiar entre posición vertical y horizontal.
+
+Nótese que solo rotará si la aplicación activa soporta la orientación solicitada.
+
+#### Copiar y pegar
+
+Cuando que el portapapeles de Android cambia, automáticamente se sincroniza al portapapeles de la computadora.
+
+Cualquier shortcut con <kbd>Ctrl</kbd> es enviado al dispositivo. En particular:
+ - <kbd>Ctrl</kbd>+<kbd>c</kbd> normalmente copia
+ - <kbd>Ctrl</kbd>+<kbd>x</kbd> normalmente corta
+ - <kbd>Ctrl</kbd>+<kbd>v</kbd> normalmente pega (después de la sincronización de portapapeles entre la computadora y el dispositivo)
+
+Esto normalmente funciona como es esperado.
+
+Sin embargo, este comportamiento depende de la aplicación en uso. Por ejemplo, _Termux_ envía SIGINT con <kbd>Ctrl</kbd>+<kbd>c</kbd>, y _K-9 Mail_ crea un nuevo mensaje.
+
+Para copiar, cortar y pegar, en tales casos (solo soportado en Android >= 7):
+ - <kbd>MOD</kbd>+<kbd>c</kbd> inyecta `COPY`
+ - <kbd>MOD</kbd>+<kbd>x</kbd> inyecta `CUT`
+ - <kbd>MOD</kbd>+<kbd>v</kbd> inyecta `PASTE` (después de la sincronización de portapapeles entre la computadora y el dispositivo)
+
+Además, <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> permite inyectar el texto en el portapapeles de la computadora como una secuencia de teclas. Esto es útil cuando el componente no acepta pegado de texto (por ejemplo en _Termux_), pero puede romper caracteres no pertenecientes a ASCII.
+
+**AVISO:** Pegar de la computadora al dispositivo (tanto con <kbd>Ctrl</kbd>+<kbd>v</kbd> o <kbd>MOD</kbd>+<kbd>v</kbd>) copia el contenido al portapapeles del dispositivo. Como consecuencia, cualquier aplicación de Android puede leer su contenido. Debería evitar pegar contenido sensible (como contraseñas) de esta forma.
+
+Algunos dispositivos no se comportan como es esperado al establecer el portapapeles programáticamente. La opción `--legacy-paste` está disponible para cambiar el comportamiento de <kbd>Ctrl</kbd>+<kbd>v</kbd> y <kbd>MOD</kbd>+<kbd>v</kbd> para que también inyecten el texto del portapapeles de la computadora como una secuencia de teclas (de la misma forma que <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>).
+
+#### Pellizcar para zoom
+
+Para simular "pinch-to-zoom": <kbd>Ctrl</kbd>+_click-y-mover_.
+
+Más precisamente, mantén <kbd>Ctrl</kbd> mientras presionas botón izquierdo. Hasta que no se suelte el botón, todos los movimientos del mouse cambiarán el tamaño y rotación del contenido (si es soportado por la app en uso) respecto al centro de la pantalla.
+
+Concretamente, scrcpy genera clicks adicionales con un "dedo virtual" en la posición invertida respecto al centro de la pantalla.
+
+
+#### Preferencias de inyección de texto
+
+Existen dos tipos de [eventos][textevents] generados al escribir texto:
+ - _key events_, marcando si la tecla es presionada o soltada;
+ - _text events_, marcando si un texto fue introducido.
+
+Por defecto, las letras son inyectadas usando _key events_, para que el teclado funcione como es esperado en juegos (típicamente las teclas WASD).
+
+Pero esto puede [causar problemas][prefertext]. Si encuentras tales problemas, los puedes evitar con:
+
+```bash
+scrcpy --prefer-text
+```
+
+(Pero esto romperá el comportamiento del teclado en los juegos)
+
+[textevents]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-text-input
+[prefertext]: https://github.com/Genymobile/scrcpy/issues/650#issuecomment-512945343
+
+
+#### Repetir tecla
+
+Por defecto, mantener una tecla presionada genera múltiples _key events_. Esto puede causar problemas de desempeño en algunos juegos, donde estos eventos no tienen sentido de todos modos.
+
+Para evitar enviar _key events_ repetidos:
+
+```bash
+scrcpy --no-key-repeat
+```
+
+
+#### Botón derecho y botón del medio
+
+Por defecto, botón derecho ejecuta RETROCEDER (o ENCENDIDO) y botón del medio INICIO. Para inhabilitar estos atajos y enviar los clicks al dispositivo:
+
+```bash
+scrcpy --forward-all-clicks
+```
+
+
+### Arrastrar y soltar archivos
+
+#### Instalar APKs
+
+Para instalar un APK, arrastre y suelte el archivo APK (terminado en `.apk`) a la ventana de _scrcpy_.
+
+No hay respuesta visual, un mensaje se escribirá en la consola.
+
+
+#### Enviar archivos al dispositivo
+
+Para enviar un archivo a `/sdcard/` en el dispositivo, arrastre y suelte un archivo (no APK) a la ventana de _scrcpy_.
+
+No hay respuesta visual, un mensaje se escribirá en la consola.
+
+El directorio de destino puede ser modificado al iniciar:
+
+```bash
+scrcpy --push-target=/sdcard/Download/
+```
+
+
+### Envío de Audio
+
+_Scrcpy_ no envía el audio. Use [sndcpy].
+
+También lea [issue #14].
+
+[sndcpy]: https://github.com/rom1v/sndcpy
+[issue #14]: https://github.com/Genymobile/scrcpy/issues/14
+
+
+## Atajos
+
+En la siguiente lista, <kbd>MOD</kbd> es el atajo modificador. Por defecto es <kbd>Alt</kbd> (izquierdo) o <kbd>Super</kbd> (izquierdo).
+
+Se puede modificar usando `--shortcut-mod`. Las posibles teclas son `lctrl` (izquierdo), `rctrl` (derecho), `lalt` (izquierdo), `ralt` (derecho), `lsuper` (izquierdo) y `rsuper` (derecho). Por ejemplo:
+
+```bash
+# use RCtrl para los atajos
+scrcpy --shortcut-mod=rctrl
+
+# use tanto LCtrl+LAlt o LSuper para los atajos
+scrcpy --shortcut-mod=lctrl+lalt,lsuper
+```
+
+_<kbd>[Super]</kbd> es generalmente la tecla <kbd>Windows</kbd> o <kbd>Cmd</kbd>._
+
+[Super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button)
+
+ | Acción                                      |   Atajo
+ | ------------------------------------------- |:-----------------------------
+ | Alterne entre pantalla compelta             | <kbd>MOD</kbd>+<kbd>f</kbd>
+ | Rotar pantalla hacia la izquierda           | <kbd>MOD</kbd>+<kbd>←</kbd> _(izquierda)_
+ | Rotar pantalla hacia la derecha             | <kbd>MOD</kbd>+<kbd>→</kbd> _(derecha)_
+ | Ajustar ventana a 1:1 ("pixel-perfect")     | <kbd>MOD</kbd>+<kbd>g</kbd>
+ | Ajustar ventana para quitar los bordes negros| <kbd>MOD</kbd>+<kbd>w</kbd> \| _Doble click¹_
+ | Click en `INICIO`                           | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Botón del medio_
+ | Click en `RETROCEDER`                       | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Botón derecho²_
+ | Click en `CAMBIAR APLICACIÓN`               | <kbd>MOD</kbd>+<kbd>s</kbd>
+ | Click en `MENÚ` (desbloquear pantalla)      | <kbd>MOD</kbd>+<kbd>m</kbd>
+ | Click en `SUBIR VOLUMEN`                    | <kbd>MOD</kbd>+<kbd>↑</kbd> _(arriba)_
+ | Click en `BAJAR VOLUME`                     | <kbd>MOD</kbd>+<kbd>↓</kbd> _(abajo)_
+ | Click en `ENCENDIDO`                        | <kbd>MOD</kbd>+<kbd>p</kbd>
+ | Encendido                                   | _Botón derecho²_
+ | Apagar pantalla (manteniendo la transmisión)| <kbd>MOD</kbd>+<kbd>o</kbd>
+ | Encender pantalla                           | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
+ | Rotar pantalla del dispositivo              | <kbd>MOD</kbd>+<kbd>r</kbd>
+ | Abrir panel de notificaciones               | <kbd>MOD</kbd>+<kbd>n</kbd>
+ | Cerrar panel de notificaciones              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copiar al portapapeles³                     | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Cortar al portapapeles³                     | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Synchronizar portapapeles y pegar³          | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | inyectar texto del portapapeles de la PC    | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
+ | Habilitar/Deshabilitar contador de FPS (en stdout)      | <kbd>MOD</kbd>+<kbd>i</kbd>
+ | Pellizcar para zoom                         | <kbd>Ctrl</kbd>+_click-y-mover_
+
+_¹Doble click en los bordes negros para eliminarlos._  
+_²Botón derecho enciende la pantalla si estaba apagada, sino ejecuta RETROCEDER._  
+_³Solo en Android >= 7._
+
+Todos los atajos <kbd>Ctrl</kbd>+_tecla_ son enviados al dispositivo para que sean manejados por la aplicación activa.
+
+
+## Path personalizado
+
+Para usar un binario de _adb_ en particular, configure el path `ADB` en las variables de entorno:
+
+```bash
+ADB=/path/to/adb scrcpy
+```
+
+Para sobreescribir el path del archivo `scrcpy-server`, configure el path en `SCRCPY_SERVER_PATH`.
+
+
+## ¿Por qué _scrcpy_?
+
+Un colega me retó a encontrar un nombre tan impronunciable como [gnirehtet].
+
+[`strcpy`] copia un **str**ing; `scrcpy` copia un **scr**een.
+
+[gnirehtet]: https://github.com/Genymobile/gnirehtet
+[`strcpy`]: http://man7.org/linux/man-pages/man3/strcpy.3.html
+
+
+## ¿Cómo construir (BUILD)?
+
+Véase [BUILD] (en inglés).
+
+
+## Problemas generales
+
+Vea las [preguntas frecuentes (en inglés)](FAQ.md).
+
+
+## Desarrolladores
+
+Lea la [hoja de desarrolladores (en inglés)](DEVELOP.md).
+
+
+## Licencia
+
+    Copyright (C) 2018 Genymobile
+    Copyright (C) 2018-2021 Romain Vimont
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+## Artículos
+
+- [Introducing scrcpy][article-intro] (en inglés)
+- [Scrcpy now works wirelessly][article-tcpip] (en inglés)
+
+[article-intro]: https://blog.rom1v.com/2018/03/introducing-scrcpy/
+[article-tcpip]: https://www.genymotion.com/blog/open-source-project-scrcpy-now-works-wirelessly/

README.tr.md

@@ -0,0 +1,824 @@
+# scrcpy (v1.18)
+
+Bu uygulama Android cihazların USB (ya da [TCP/IP][article-tcpip]) üzerinden
+görüntülenmesini ve kontrol edilmesini sağlar. _root_ erişimine ihtiyaç duymaz.
+_GNU/Linux_, _Windows_ ve _macOS_ sistemlerinde çalışabilir.
+
+![screenshot](assets/screenshot-debian-600.jpg)
+
+Öne çıkan özellikler:
+
+- **hafiflik** (doğal, sadece cihazın ekranını gösterir)
+- **performans** (30~60fps)
+- **kalite** (1920×1080 ya da üzeri)
+- **düşük gecikme süresi** ([35~70ms][lowlatency])
+- **düşük başlangıç süresi** (~1 saniye ilk kareyi gösterme süresi)
+- **müdaheleci olmama** (cihazda kurulu yazılım kalmaz)
+
+[lowlatency]: https://github.com/Genymobile/scrcpy/pull/646
+
+## Gereksinimler
+
+Android cihaz en düşük API 21 (Android 5.0) olmalıdır.
+
+[Adb hata ayıklamasının][enable-adb] cihazınızda aktif olduğundan emin olun.
+
+[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
+
+Bazı cihazlarda klavye ve fare ile kontrol için [ilave bir seçenek][control] daha
+etkinleştirmeniz gerekebilir.
+
+[control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
+
+## Uygulamayı indirin
+
+<a href="https://repology.org/project/scrcpy/versions"><img src="https://repology.org/badge/vertical-allrepos/scrcpy.svg" alt="Packaging status" align="right"></a>
+
+### Özet
+
+- Linux: `apt install scrcpy`
+- Windows: [indir][direct-win64]
+- macOS: `brew install scrcpy`
+
+Kaynak kodu derle: [BUILD] ([basitleştirilmiş süreç][build_simple])
+
+[build]: BUILD.md
+[build_simple]: BUILD.md#simple
+
+### Linux
+
+Debian (şimdilik _testing_ ve _sid_) ve Ubuntu (20.04) için:
+
+```
+apt install scrcpy
+```
+
+[Snap] paketi: [`scrcpy`][snap-link].
+
+[snap-link]: https://snapstats.org/snaps/scrcpy
+[snap]: https://en.wikipedia.org/wiki/Snappy_(package_manager)
+
+Fedora için, [COPR] paketi: [`scrcpy`][copr-link].
+
+[copr]: https://fedoraproject.org/wiki/Category:Copr
+[copr-link]: https://copr.fedorainfracloud.org/coprs/zeno/scrcpy/
+
+Arch Linux için, [AUR] paketi: [`scrcpy`][aur-link].
+
+[aur]: https://wiki.archlinux.org/index.php/Arch_User_Repository
+[aur-link]: https://aur.archlinux.org/packages/scrcpy/
+
+Gentoo için, [Ebuild] mevcut: [`scrcpy/`][ebuild-link].
+
+[ebuild]: https://wiki.gentoo.org/wiki/Ebuild
+[ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy
+
+Ayrıca [uygulamayı el ile de derleyebilirsiniz][build] ([basitleştirilmiş süreç][build_simple]).
+
+### Windows
+
+Windows için (`adb` dahil) tüm gereksinimleri ile derlenmiş bir arşiv mevcut:
+
+ - [README](README.md#windows)
+
+[Chocolatey] ile kurulum:
+
+[chocolatey]: https://chocolatey.org/
+
+```bash
+choco install scrcpy
+choco install adb    # if you don't have it yet
+```
+
+[Scoop] ile kurulum:
+
+```bash
+scoop install scrcpy
+scoop install adb    # if you don't have it yet
+```
+
+[scoop]: https://scoop.sh
+
+Ayrıca [uygulamayı el ile de derleyebilirsiniz][build].
+
+### macOS
+
+Uygulama [Homebrew] içerisinde mevcut. Sadece kurun:
+
+[homebrew]: https://brew.sh/
+
+```bash
+brew install scrcpy
+```
+
+`adb`, `PATH` içerisinden erişilebilir olmalıdır. Eğer değilse:
+
+```bash
+brew install android-platform-tools
+```
+
+[MacPorts] kullanılarak adb ve uygulamanın birlikte kurulumu yapılabilir:
+
+```bash
+sudo port install scrcpy
+```
+
+[macports]: https://www.macports.org/
+
+Ayrıca [uygulamayı el ile de derleyebilirsiniz][build].
+
+## Çalıştırma
+
+Android cihazınızı bağlayın ve aşağıdaki komutu çalıştırın:
+
+```bash
+scrcpy
+```
+
+Komut satırı argümanları aşağıdaki komut ile listelenebilir:
+
+```bash
+scrcpy --help
+```
+
+## Özellikler
+
+### Ekran yakalama ayarları
+
+#### Boyut azaltma
+
+Bazen, Android cihaz ekranını daha düşük seviyede göstermek performansı artırabilir.
+
+Hem genişliği hem de yüksekliği bir değere sabitlemek için (ör. 1024):
+
+```bash
+scrcpy --max-size 1024
+scrcpy -m 1024  # kısa versiyon
+```
+
+Diğer boyut en-boy oranı korunacak şekilde hesaplanır.
+Bu şekilde ekran boyutu 1920x1080 olan bir cihaz 1024x576 olarak görünür.
+
+#### Bit-oranı değiştirme
+
+Varsayılan bit-oranı 8 Mbps'dir. Değiştirmek için (ör. 2 Mbps):
+
+```bash
+scrcpy --bit-rate 2M
+scrcpy -b 2M  # kısa versiyon
+```
+
+#### Çerçeve oranı sınırlama
+
+Ekran yakalama için maksimum çerçeve oranı için sınır koyulabilir:
+
+```bash
+scrcpy --max-fps 15
+```
+
+Bu özellik Android 10 ve sonrası sürümlerde resmi olarak desteklenmektedir,
+ancak daha önceki sürümlerde çalışmayabilir.
+
+#### Kesme
+
+Cihaz ekranının sadece bir kısmı görünecek şekilde kesilebilir.
+
+Bu özellik Oculus Go'nun bir gözünü yakalamak gibi durumlarda kullanışlı olur:
+
+```bash
+scrcpy --crop 1224:1440:0:0   # (0,0) noktasından 1224x1440
+```
+
+Eğer `--max-size` belirtilmişse yeniden boyutlandırma kesme işleminden sonra yapılır.
+
+#### Video yönünü kilitleme
+
+Videonun yönünü kilitlemek için:
+
+```bash
+scrcpy --lock-video-orientation     # başlangıç yönü
+scrcpy --lock-video-orientation=0   # doğal yön
+scrcpy --lock-video-orientation=1   # 90° saatin tersi yönü
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 90° saat yönü
+```
+
+Bu özellik kaydetme yönünü de etkiler.
+
+[Pencere ayrı olarak döndürülmüş](#rotation) olabilir.
+
+#### Kodlayıcı
+
+Bazı cihazlar birden fazla kodlayıcıya sahiptir, ve bunların bazıları programın
+kapanmasına sebep olabilir. Bu durumda farklı bir kodlayıcı seçilebilir:
+
+```bash
+scrcpy --encoder OMX.qcom.video.encoder.avc
+```
+
+Mevcut kodlayıcıları listelemek için geçerli olmayan bir kodlayıcı ismi girebilirsiniz,
+hata mesajı mevcut kodlayıcıları listeleyecektir:
+
+```bash
+scrcpy --encoder _
+```
+
+### Yakalama
+
+#### Kaydetme
+
+Ekran yakalama sırasında kaydedilebilir:
+
+```bash
+scrcpy --record file.mp4
+scrcpy -r file.mkv
+```
+
+Yakalama olmadan kayıt için:
+
+```bash
+scrcpy --no-display --record file.mp4
+scrcpy -Nr file.mkv
+# Ctrl+C ile kayıt kesilebilir
+```
+
+"Atlanan kareler" gerçek zamanlı olarak gösterilmese (performans sebeplerinden ötürü) dahi kaydedilir.
+Kareler cihazda _zamandamgası_ ile saklanır, bu sayede [paket gecikme varyasyonu]
+kayıt edilen dosyayı etkilemez.
+
+[paket gecikme varyasyonu]: https://en.wikipedia.org/wiki/Packet_delay_variation
+
+#### v4l2loopback
+
+Linux'ta video akışı bir v4l2 loopback cihazına gönderilebilir. Bu sayede Android
+cihaz bir web kamerası gibi davranabilir.
+
+Bu işlem için `v4l2loopback` modülü kurulu olmalıdır:
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+v4l2 cihazı oluşturmak için:
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+Bu komut `/dev/videoN` adresinde `N` yerine bir tamsayı koyarak yeni bir video
+cihazı oluşturacaktır.
+(birden fazla cihaz oluşturmak veya spesifik ID'ye sahip cihazlar için
+diğer [seçenekleri](https://github.com/umlaeute/v4l2loopback#options) inceleyebilirsiniz.)
+
+Aktif cihazları listelemek için:
+
+```bash
+# v4l-utils paketi ile
+v4l2-ctl --list-devices
+
+# daha basit ama yeterli olabilecek şekilde
+ls /dev/video*
+```
+
+v4l2 kullanarak scrpy kullanmaya başlamak için:
+
+```bash
+scrcpy --v4l2-sink=/dev/videoN
+scrcpy --v4l2-sink=/dev/videoN --no-display  # ayna penceresini kapatarak
+scrcpy --v4l2-sink=/dev/videoN -N            # kısa versiyon
+```
+
+(`N` harfini oluşturulan cihaz ID numarası ile değiştirin. `ls /dev/video*` cihaz ID'lerini görebilirsiniz.)
+
+Aktifleştirildikten sonra video akışını herhangi bir v4l2 özellikli araçla açabilirsiniz:
+
+```bash
+ffplay -i /dev/videoN
+vlc v4l2:///dev/videoN   # VLC kullanırken yükleme gecikmesi olabilir
+```
+
+Örneğin, [OBS] ile video akışını kullanabilirsiniz.
+
+[obs]: https://obsproject.com/
+
+### Bağlantı
+
+#### Kablosuz
+
+_Scrcpy_ cihazla iletişim kurmak için `adb`'yi kullanır, Ve `adb`
+bir cihaza TCP/IP kullanarak [bağlanabilir].
+
+1. Cihazınızı bilgisayarınızla aynı Wi-Fi ağına bağlayın.
+2. Cihazınızın IP adresini bulun. Ayarlar → Telefon Hakkında → Durum sekmesinden veya
+   aşağıdaki komutu çalıştırarak öğrenebilirsiniz:
+
+   ```bash
+   adb shell ip route | awk '{print $9}'
+   ```
+
+3. Cihazınızda TCP/IP üzerinden adb kullanımını etkinleştirin: `adb tcpip 5555`.
+4. Cihazınızı bilgisayarınızdan sökün.
+5. Cihazınıza bağlanın: `adb connect DEVICE_IP:5555` _(`DEVICE_IP` değerini değiştirin)_.
+6. `scrcpy` komutunu normal olarak çalıştırın.
+
+Bit-oranını ve büyüklüğü azaltmak yararlı olabilir:
+
+```bash
+scrcpy --bit-rate 2M --max-size 800
+scrcpy -b2M -m800  # kısa version
+```
+
+[bağlanabilir]: https://developer.android.com/studio/command-line/adb.html#wireless
+
+#### Birden fazla cihaz
+
+Eğer `adb devices` komutu birden fazla cihaz listeliyorsa _serial_ değerini belirtmeniz gerekir:
+
+```bash
+scrcpy --serial 0123456789abcdef
+scrcpy -s 0123456789abcdef  # kısa versiyon
+```
+
+Eğer cihaz TCP/IP üzerinden bağlanmışsa:
+
+```bash
+scrcpy --serial 192.168.0.1:5555
+scrcpy -s 192.168.0.1:5555  # kısa version
+```
+
+Birden fazla cihaz için birden fazla _scrcpy_ uygulaması çalıştırabilirsiniz.
+
+#### Cihaz bağlantısı ile otomatik başlatma
+
+[AutoAdb] ile yapılabilir:
+
+```bash
+autoadb scrcpy -s '{}'
+```
+
+[autoadb]: https://github.com/rom1v/autoadb
+
+#### SSH Tünel
+
+Uzaktaki bir cihaza erişmek için lokal `adb` istemcisi, uzaktaki bir `adb` sunucusuna
+(aynı _adb_ sürümünü kullanmak şartı ile) bağlanabilir :
+
+```bash
+adb kill-server    # 5037 portunda çalışan lokal adb sunucusunu kapat
+ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
+# bunu açık tutun
+```
+
+Başka bir terminalde:
+
+```bash
+scrcpy
+```
+
+Uzaktan port yönlendirme ileri yönlü bağlantı kullanabilirsiniz
+(`-R` yerine `-L` olduğuna dikkat edin):
+
+```bash
+adb kill-server    # 5037 portunda çalışan lokal adb sunucusunu kapat
+ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
+# bunu açık tutun
+```
+
+Başka bir terminalde:
+
+```bash
+scrcpy --force-adb-forward
+```
+
+Kablosuz bağlantı gibi burada da kalite düşürmek faydalı olabilir:
+
+```
+scrcpy -b2M -m800 --max-fps 15
+```
+
+### Pencere ayarları
+
+#### İsim
+
+Cihaz modeli varsayılan pencere ismidir. Değiştirmek için:
+
+```bash
+scrcpy --window-title 'Benim cihazım'
+```
+
+#### Konum ve
+
+Pencerenin başlangıç konumu ve boyutu belirtilebilir:
+
+```bash
+scrcpy --window-x 100 --window-y 100 --window-width 800 --window-height 600
+```
+
+#### Kenarlıklar
+
+Pencere dekorasyonunu kapatmak için:
+
+```bash
+scrcpy --window-borderless
+```
+
+#### Her zaman üstte
+
+Scrcpy penceresini her zaman üstte tutmak için:
+
+```bash
+scrcpy --always-on-top
+```
+
+#### Tam ekran
+
+Uygulamayı tam ekran başlatmak için:
+
+```bash
+scrcpy --fullscreen
+scrcpy -f  # kısa versiyon
+```
+
+Tam ekran <kbd>MOD</kbd>+<kbd>f</kbd> ile dinamik olarak değiştirilebilir.
+
+#### Döndürme
+
+Pencere döndürülebilir:
+
+```bash
+scrcpy --rotation 1
+```
+
+Seçilebilecek değerler:
+
+- `0`: döndürme yok
+- `1`: 90 derece saat yönünün tersi
+- `2`: 180 derece
+- `3`: 90 derece saat yönü
+
+Döndürme <kbd>MOD</kbd>+<kbd>←</kbd>_(sol)_ ve
+<kbd>MOD</kbd>+<kbd>→</kbd> _(sağ)_ ile dinamik olarak değiştirilebilir.
+
+_scrcpy_'de 3 farklı döndürme olduğuna dikkat edin:
+
+- <kbd>MOD</kbd>+<kbd>r</kbd> cihazın yatay veya dikey modda çalışmasını sağlar.
+  (çalışan uygulama istenilen oryantasyonda çalışmayı desteklemiyorsa döndürme
+  işlemini reddedebilir.)
+- [`--lock-video-orientation`](#lock-video-orientation) görüntü yakalama oryantasyonunu
+  (cihazdan bilgisayara gelen video akışının oryantasyonu) değiştirir. Bu kayıt işlemini
+  etkiler.
+- `--rotation` (or <kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>)
+  pencere içeriğini dönderir. Bu sadece canlı görüntüyü etkiler, kayıt işlemini etkilemez.
+
+### Diğer ekran yakalama seçenekleri
+
+#### Yazma korumalı
+
+Kontrolleri devre dışı bırakmak için (cihazla etkileşime geçebilecek her şey: klavye ve
+fare girdileri, dosya sürükleyip bırakma):
+
+```bash
+scrcpy --no-control
+scrcpy -n
+```
+
+#### Ekran
+
+Eğer cihazın birden fazla ekranı varsa hangi ekranın kullanılacağını seçebilirsiniz:
+
+```bash
+scrcpy --display 1
+```
+
+Kullanılabilecek ekranları listelemek için:
+
+```bash
+adb shell dumpsys display   # çıktı içerisinde "mDisplayId=" terimini arayın
+```
+
+İkinci ekran ancak cihaz Android sürümü 10 veya üzeri olmalıdır (değilse yazma korumalı
+olarak görüntülenir).
+
+#### Uyanık kalma
+
+Cihazın uyku moduna girmesini engellemek için:
+
+```bash
+scrcpy --stay-awake
+scrcpy -w
+```
+
+scrcpy kapandığında cihaz başlangıç durumuna geri döner.
+
+#### Ekranı kapatma
+
+Ekran yakalama sırasında cihazın ekranı kapatılabilir:
+
+```bash
+scrcpy --turn-screen-off
+scrcpy -S
+```
+
+Ya da <kbd>MOD</kbd>+<kbd>o</kbd> kısayolunu kullanabilirsiniz.
+
+Tekrar açmak için ise <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd> tuşlarına basın.
+
+Android'de, `GÜÇ` tuşu her zaman ekranı açar. Eğer `GÜÇ` sinyali scrcpy ile
+gönderilsiyse (sağ tık veya <kbd>MOD</kbd>+<kbd>p</kbd>), ekran kısa bir gecikme
+ile kapanacaktır. Fiziksel `GÜÇ` tuşuna basmak hala ekranın açılmasına sebep olacaktır.
+
+Bu cihazın uykuya geçmesini engellemek için kullanılabilir:
+
+```bash
+scrcpy --turn-screen-off --stay-awake
+scrcpy -Sw
+```
+
+#### Dokunuşları gösterme
+
+Sunumlar sırasında fiziksel dokunuşları (fiziksel cihazdaki) göstermek
+faydalı olabilir.
+
+Android'de bu özellik _Geliştici seçenekleri_ içerisinde bulunur.
+
+_Scrcpy_ bu özelliği çalışırken etkinleştirebilir ve kapanırken eski
+haline geri getirebilir:
+
+```bash
+scrcpy --show-touches
+scrcpy -t
+```
+
+Bu opsiyon sadece _fiziksel_ dokunuşları (cihaz ekranındaki) gösterir.
+
+#### Ekran koruyucuyu devre dışı bırakma
+
+Scrcpy varsayılan ayarlarında ekran koruyucuyu devre dışı bırakmaz.
+
+Bırakmak için:
+
+```bash
+scrcpy --disable-screensaver
+```
+
+### Girdi kontrolü
+
+#### Cihaz ekranını dönderme
+
+<kbd>MOD</kbd>+<kbd>r</kbd> tuşları ile yatay ve dikey modlar arasında
+geçiş yapabilirsiniz.
+
+Bu kısayol ancak çalışan uygulama desteklediği takdirde ekranı döndürecektir.
+
+#### Kopyala yapıştır
+
+Ne zaman Android cihazdaki pano değişse bilgisayardaki pano otomatik olarak
+senkronize edilir.
+
+Tüm <kbd>Ctrl</kbd> kısayolları cihaza iletilir:
+
+- <kbd>Ctrl</kbd>+<kbd>c</kbd> genelde kopyalar
+- <kbd>Ctrl</kbd>+<kbd>x</kbd> genelde keser
+- <kbd>Ctrl</kbd>+<kbd>v</kbd> genelde yapıştırır (bilgisayar ve cihaz arasındaki
+  pano senkronizasyonundan sonra)
+
+Bu kısayollar genelde beklediğiniz gibi çalışır.
+
+Ancak kısayolun gerçekten yaptığı eylemi açık olan uygulama belirler.
+Örneğin, _Termux_ <kbd>Ctrl</kbd>+<kbd>c</kbd> ile kopyalama yerine
+SIGINT sinyali gönderir, _K-9 Mail_ ise yeni mesaj oluşturur.
+
+Bu tip durumlarda kopyalama, kesme ve yapıştırma için (Android versiyon 7 ve
+üstü):
+
+- <kbd>MOD</kbd>+<kbd>c</kbd> `KOPYALA`
+- <kbd>MOD</kbd>+<kbd>x</kbd> `KES`
+- <kbd>MOD</kbd>+<kbd>v</kbd> `YAPIŞTIR` (bilgisayar ve cihaz arasındaki
+  pano senkronizasyonundan sonra)
+
+Bunlara ek olarak, <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> tuşları
+bilgisayar pano içeriğini tuş basma eylemleri şeklinde gönderir. Bu metin
+yapıştırmayı desteklemeyen (_Termux_ gibi) uygulamar için kullanışlıdır,
+ancak ASCII olmayan içerikleri bozabilir.
+
+**UYARI:** Bilgisayar pano içeriğini cihaza yapıştırmak
+(<kbd>Ctrl</kbd>+<kbd>v</kbd> ya da <kbd>MOD</kbd>+<kbd>v</kbd> tuşları ile)
+içeriği cihaz panosuna kopyalar. Sonuç olarak, herhangi bir Android uygulaması
+içeriğe erişebilir. Hassas içerikler (parolalar gibi) için bu özelliği kullanmaktan
+kaçının.
+
+Bazı cihazlar pano değişikleri konusunda beklenilen şekilde çalışmayabilir.
+Bu durumlarda `--legacy-paste` argümanı kullanılabilir. Bu sayede
+<kbd>Ctrl</kbd>+<kbd>v</kbd> ve <kbd>MOD</kbd>+<kbd>v</kbd> tuşları da
+pano içeriğini tuş basma eylemleri şeklinde gönderir
+(<kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> ile aynı şekilde).
+
+#### İki parmak ile yakınlaştırma
+
+"İki parmak ile yakınlaştırma" için: <kbd>Ctrl</kbd>+_tıkla-ve-sürükle_.
+
+Daha açıklayıcı şekilde, <kbd>Ctrl</kbd> tuşuna sol-tık ile birlikte basılı
+tutun. Sol-tık serbest bırakılıncaya kadar yapılan tüm fare hareketleri
+ekran içeriğini ekranın merkezini baz alarak dönderir, büyütür veya küçültür
+(eğer uygulama destekliyorsa).
+
+Scrcpy ekranın merkezinde bir "sanal parmak" varmış gibi davranır.
+
+#### Metin gönderme tercihi
+
+Metin girilirken ili çeşit [eylem][textevents] gerçekleştirilir:
+
+- _tuş eylemleri_, bir tuşa basıldığı sinyalini verir;
+- _metin eylemleri_, bir metin girildiği sinyalini verir.
+
+Varsayılan olarak, harfler tuş eylemleri kullanılarak gönderilir. Bu sayede
+klavye oyunlarda beklenilene uygun olarak çalışır (Genelde WASD tuşları).
+
+Ancak bu [bazı problemlere][prefertext] yol açabilir. Eğer bu problemler ile
+karşılaşırsanız metin eylemlerini tercih edebilirsiniz:
+
+```bash
+scrcpy --prefer-text
+```
+
+(Ama bu oyunlardaki klavye davranışlarını bozacaktır)
+
+[textevents]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-text-input
+[prefertext]: https://github.com/Genymobile/scrcpy/issues/650#issuecomment-512945343
+
+#### Tuş tekrarı
+
+Varsayılan olarak, bir tuşa basılı tutmak tuş eylemini tekrarlar. Bu durum
+bazı oyunlarda problemlere yol açabilir.
+
+Tuş eylemlerinin tekrarını kapatmak için:
+
+```bash
+scrcpy --no-key-repeat
+```
+
+#### Sağ-tık ve Orta-tık
+
+Varsayılan olarak, sağ-tık GERİ (ya da GÜÇ açma) eylemlerini, orta-tık ise
+ANA EKRAN eylemini tetikler. Bu kısayolları devre dışı bırakmak için:
+
+```bash
+scrcpy --forward-all-clicks
+```
+
+### Dosya bırakma
+
+#### APK kurulumu
+
+APK kurmak için, bilgisayarınızdaki APK dosyasını (`.apk` ile biten) _scrcpy_
+penceresine sürükleyip bırakın.
+
+Bu eylem görsel bir geri dönüt oluşturmaz, konsola log yazılır.
+
+#### Dosyayı cihaza gönderme
+
+Bir dosyayı cihazdaki `/sdcard/Download/` dizinine atmak için, (APK olmayan)
+bir dosyayı _scrcpy_ penceresine sürükleyip bırakın.
+
+Bu eylem görsel bir geri dönüt oluşturmaz, konsola log yazılır.
+
+Hedef dizin uygulama başlatılırken değiştirilebilir:
+
+```bash
+scrcpy --push-target=/sdcard/Movies/
+```
+
+### Ses iletimi
+
+_Scrcpy_ ses iletimi yapmaz. Yerine [sndcpy] kullanabilirsiniz.
+
+Ayrıca bakınız [issue #14].
+
+[sndcpy]: https://github.com/rom1v/sndcpy
+[issue #14]: https://github.com/Genymobile/scrcpy/issues/14
+
+## Kısayollar
+
+Aşağıdaki listede, <kbd>MOD</kbd> kısayol tamamlayıcısıdır. Varsayılan olarak
+(sol) <kbd>Alt</kbd> veya (sol) <kbd>Super</kbd> tuşudur.
+
+Bu tuş `--shortcut-mod` argümanı kullanılarak `lctrl`, `rctrl`,
+`lalt`, `ralt`, `lsuper` ve `rsuper` tuşlarından biri ile değiştirilebilir.
+Örneğin:
+
+```bash
+# Sağ Ctrl kullanmak için
+scrcpy --shortcut-mod=rctrl
+
+# Sol Ctrl, Sol Alt veya Sol Super tuşlarından birini kullanmak için
+scrcpy --shortcut-mod=lctrl+lalt,lsuper
+```
+
+_<kbd>[Super]</kbd> tuşu genelde <kbd>Windows</kbd> veya <kbd>Cmd</kbd> tuşudur._
+
+[super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button)
+
+| Action                                           | Shortcut                                                  |
+| ------------------------------------------------ | :-------------------------------------------------------- |
+| Tam ekran modunu değiştirme                      | <kbd>MOD</kbd>+<kbd>f</kbd>                               |
+| Ekranı sola çevirme                              | <kbd>MOD</kbd>+<kbd>←</kbd> _(sol)_                       |
+| Ekranı sağa çevirme                              | <kbd>MOD</kbd>+<kbd>→</kbd> _(sağ)_                       |
+| Pencereyi 1:1 oranına çevirme (pixel-perfect)    | <kbd>MOD</kbd>+<kbd>g</kbd>                               |
+| Penceredeki siyah kenarlıkları kaldırma          | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Çift-sol-tık¹_            |
+| `ANA EKRAN` tuşu                                 | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Orta-tık_                 |
+| `GERİ` tuşu                                      | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Sağ-tık²_                 |
+| `UYGULAMA_DEĞİŞTİR` tuşu                         | <kbd>MOD</kbd>+<kbd>s</kbd> \| _4.tık³_                   |
+| `MENÜ` tuşu (ekran kilidini açma)                | <kbd>MOD</kbd>+<kbd>m</kbd>                               |
+| `SES_AÇ` tuşu                                    | <kbd>MOD</kbd>+<kbd>↑</kbd> _(yukarı)_                    |
+| `SES_KIS` tuşu                                   | <kbd>MOD</kbd>+<kbd>↓</kbd> _(aşağı)_                     |
+| `GÜÇ` tuşu                                       | <kbd>MOD</kbd>+<kbd>p</kbd>                               |
+| Gücü açma                                        | _Sağ-tık²_                                                |
+| Cihaz ekranını kapatma (ekran yakalama durmadan) | <kbd>MOD</kbd>+<kbd>o</kbd>                               |
+| Cihaz ekranını açma                              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>              |
+| Cihaz ekranını dönderme                          | <kbd>MOD</kbd>+<kbd>r</kbd>                               |
+| Bildirim panelini genişletme                     | <kbd>MOD</kbd>+<kbd>n</kbd> \| _5.tık³_                   |
+| Ayarlar panelini genişletme                      | <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _Çift-5.tık³_ |
+| Panelleri kapatma                                | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>              |
+| Panoya kopyalama⁴                                | <kbd>MOD</kbd>+<kbd>c</kbd>                               |
+| Panoya kesme⁴                                    | <kbd>MOD</kbd>+<kbd>x</kbd>                               |
+| Panoları senkronize ederek yapıştırma⁴           | <kbd>MOD</kbd>+<kbd>v</kbd>                               |
+| Bilgisayar panosundaki metini girme              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>              |
+| FPS sayacını açma/kapatma (terminalde)           | <kbd>MOD</kbd>+<kbd>i</kbd>                               |
+| İki parmakla yakınlaştırma                       | <kbd>Ctrl</kbd>+_tıkla-ve-sürükle_                        |
+
+_¹Siyah kenarlıkları silmek için üzerine çift tıklayın._  
+_²Sağ-tık ekran kapalıysa açar, değilse GERİ sinyali gönderir._  
+_³4. ve 5. fare tuşları (eğer varsa)._  
+_⁴Sadece Android 7 ve üzeri versiyonlarda._
+
+Tekrarlı tuşu olan kısayollar tuş bırakılıp tekrar basılarak tekrar çalıştırılır.
+Örneğin, "Ayarlar panelini genişletmek" için:
+
+1.  <kbd>MOD</kbd> tuşuna basın ve basılı tutun.
+2.  <kbd>n</kbd> tuşuna iki defa basın.
+3.  <kbd>MOD</kbd> tuşuna basmayı bırakın.
+
+Tüm <kbd>Ctrl</kbd>+_tuş_ kısayolları cihaza gönderilir. Bu sayede istenilen komut
+uygulama tarafından çalıştırılır.
+
+## Özel dizinler
+
+Varsayılandan farklı bir _adb_ programı çalıştırmak için `ADB` ortam değişkenini
+ayarlayın:
+
+```bash
+ADB=/path/to/adb scrcpy
+```
+
+`scrcpy-server` programının dizinini değiştirmek için `SCRCPY_SERVER_PATH`
+değişkenini ayarlayın.
+
+[useful]: https://github.com/Genymobile/scrcpy/issues/278#issuecomment-429330345
+
+## Neden _scrcpy_?
+
+Bir meslektaşım [gnirehtet] gibi söylenmesi zor bir isim bulmam için bana meydan okudu.
+
+[`strcpy`] **str**ing kopyalıyor; `scrcpy` **scr**een kopyalıyor.
+
+[gnirehtet]: https://github.com/Genymobile/gnirehtet
+[`strcpy`]: http://man7.org/linux/man-pages/man3/strcpy.3.html
+
+## Nasıl derlenir?
+
+Bakınız [BUILD].
+
+## Yaygın problemler
+
+Bakınız [FAQ](FAQ.md).
+
+## Geliştiriciler
+
+[Geliştiriciler sayfası]nı okuyun.
+
+[geliştiriciler sayfası]: DEVELOP.md
+
+## Lisans
+
+    Copyright (C) 2018 Genymobile
+    Copyright (C) 2018-2021 Romain Vimont
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+## Makaleler
+
+- [Introducing scrcpy][article-intro]
+- [Scrcpy now works wirelessly][article-tcpip]
+
+[article-intro]: https://blog.rom1v.com/2018/03/introducing-scrcpy/
+[article-tcpip]: https://www.genymotion.com/blog/open-source-project-scrcpy-now-works-wirelessly/

README.zh-Hans.md

@@ -2,115 +2,108 @@ _Only the original [README](README.md) is guaranteed to be up-to-date._
 
 只有原版的[README](README.md)会保持最新。
 
-本文根据[479d10d]进行翻译。
+本文根据[ed130e05]进行翻译。
 
-[479d10d]: https://github.com/Genymobile/scrcpy/commit/479d10dc22b70272187e0963c6ad24d754a669a2#diff-04c6e90faac2675aa89e2176d2eec7d8
+[ed130e05]: https://github.com/Genymobile/scrcpy/blob/ed130e05d55615d6014d93f15cfcb92ad62b01d8/README.md
 
+# scrcpy (v1.17)
 
-
-# scrcpy (v1.16)
-
-本应用程序可以通过USB（或 [TCP/IP][article-tcpip] ）连接用于显示或控制安卓设备。这不需要获取 _root_ 权限。
-
-该应用程序可以在 _GNU/Linux_, _Windows_ 和 _macOS_ 环境下运行。
-
-[article-tcpip]:https://www.genymotion.com/blog/open-source-project-scrcpy-now-works-wirelessly/
+本应用程序可以显示并控制通过 USB (或 [TCP/IP][article-tcpip]) 连接的安卓设备，且不需要任何 _root_ 权限。本程序支持 _GNU/Linux_, _Windows_ 和 _macOS_。
 
 ![screenshot](assets/screenshot-debian-600.jpg)
 
 它专注于：
 
- - **轻量** （原生，仅显示设备屏幕）
- - **性能** （30~60fps）
- - **质量** （分辨率可达1920x1080或更高）
- - **低延迟** (35-70ms)
- - **快速启动** （数秒内即能开始显示）
- - **无侵入性** （不需要在安卓设备上安装任何程序）
+ - **轻量** (原生，仅显示设备屏幕)
+ - **性能** (30~60fps)
+ - **质量** (分辨率可达 1920×1080 或更高)
+ - **低延迟** ([35~70ms][lowlatency])
+ - **快速启动** (最快 1 秒内即可显示第一帧)
+ - **无侵入性** (不会在设备上遗留任何程序)
+
+[lowlatency]: https://github.com/Genymobile/scrcpy/pull/646
 
 
-## 使用要求
+## 系统要求
 
-安卓设备系统版本需要在Android 5.0（API 21)或以上。
+安卓设备最低需要支持 API 21 (Android 5.0)。
 
-确保您在设备上开启了[adb调试]。
+确保设备已[开启 adb 调试][enable-adb]。
 
-[adb调试]: https://developer.android.com/studio/command-line/adb.html#Enabling
+[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
 
-在某些设备上，你还需要开启[额外的选项]以用鼠标和键盘进行控制。
+在某些设备上，还需要开启[额外的选项][control]以使用鼠标和键盘进行控制。
 
-[额外的选项]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
+[control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
 
 
-## 获取scrcpy
+## 获取本程序
 
 <a href="https://repology.org/project/scrcpy/versions"><img src="https://repology.org/badge/vertical-allrepos/scrcpy.svg" alt="Packaging status" align="right"></a>
 
 ### Linux
 
-在Debian（目前仅测试版和不稳定版，即 _testing_ 和 _sid_ 版本）和Ubuntu （20.04）上：
+在 Debian (目前仅支持 _testing_ 和 _sid_ 分支) 和Ubuntu (20.04) 上：
 
 ```
 apt install scrcpy
 ```
 
-[Snap]包也是可用的： [`scrcpy`][snap-link].
+我们也提供 [Snap] 包： [`scrcpy`][snap-link]。
 
 [snap-link]: https://snapstats.org/snaps/scrcpy
 
 [snap]: https://en.wikipedia.org/wiki/Snappy_(package_manager)
 
-对于Fedora用户，我们提供[COPR]包： [`scrcpy`][copr-link].
+对 Fedora 我们提供 [COPR] 包： [`scrcpy`][copr-link]。
 
 [COPR]: https://fedoraproject.org/wiki/Category:Copr
 [copr-link]: https://copr.fedorainfracloud.org/coprs/zeno/scrcpy/
 
-对于Arch Linux用户，我们提供[AUR]包： [`scrcpy`][aur-link].
+对 Arch Linux 我们提供 [AUR] 包： [`scrcpy`][aur-link]。
 
 [AUR]: https://wiki.archlinux.org/index.php/Arch_User_Repository
 [aur-link]: https://aur.archlinux.org/packages/scrcpy/
 
-对于Gentoo用户，我们提供[Ebuild]包：[`scrcpy/`][ebuild-link].
+对 Gentoo 我们提供 [Ebuild] 包：[`scrcpy/`][ebuild-link]。
 
 [Ebuild]: https://wiki.gentoo.org/wiki/Ebuild
 [ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy
 
-您也可以[自行编译][编译](不必担心，这并不困难)。
+您也可以[自行构建][BUILD] (不必担心，这并不困难)。
 
 
 
 ### Windows
 
-在Windows上，简便起见，我们准备了包含所有依赖项（包括adb）的程序包。
+在 Windows 上，简便起见，我们提供包含了所有依赖 (包括 `adb`) 的预编译包。
 
- - [`scrcpy-win64-v1.16.zip`][direct-win64]  
-   _(SHA-256: 3f30dc5db1a2f95c2b40a0f5de91ec1642d9f53799250a8c529bc882bc0918f0)_
+ - [README](README.md#windows)
 
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.16/scrcpy-win64-v1.16.zip
-
-您也可以在[Chocolatey]下载：
+也可以使用 [Chocolatey]：
 
 [Chocolatey]: https://chocolatey.org/
 
 ```bash
 choco install scrcpy
-choco install adb    # 如果你没有adb
+choco install adb    # 如果还没有 adb
 ```
 
-也可以使用 [Scoop]:
+或者 [Scoop]:
 
 ```bash
 scoop install scrcpy
-scoop install adb    # 如果你没有adb
+scoop install adb    # 如果还没有 adb
 ```
 
 [Scoop]: https://scoop.sh
 
-您也可以[自行编译][编译]。
+您也可以[自行构建][BUILD]。
 
 
 ### macOS
 
-您可以使用[Homebrew]下载scrcpy。直接安装就可以了：
+本程序已发布到 [Homebrew]。直接安装即可：
 
 [Homebrew]: https://brew.sh/
 
@@ -118,24 +111,28 @@ scoop install adb    # 如果你没有adb
 brew install scrcpy
 ```
 
-您需要 `adb`以使用scrcpy，并且它需要可以通过 `PATH`被访问。如果您没有：
+你还需要在 `PATH` 内有 `adb`。如果还没有：
 
 ```bash
+# Homebrew >= 2.6.0
+brew install --cask android-platform-tools
+
+# Homebrew < 2.6.0
 brew cask install android-platform-tools
 ```
 
-您也可以[自行编译][编译]。
+您也可以[自行构建][BUILD]。
 
 
-## 运行scrcpy
+## 运行
 
-用USB链接电脑和安卓设备，并执行：
+连接安卓设备，然后执行：
 
 ```bash
 scrcpy
 ```
 
-支持带命令行参数执行，查看参数列表：
+本程序支持命令行参数，查看参数列表：
 
 ```bash
 scrcpy --help
@@ -143,111 +140,129 @@ scrcpy --help
 
 ## 功能介绍
 
-### 画面设置
+### 捕获设置
 
-#### 缩小分辨率
+#### 降低分辨率
 
-有时候，将设备屏幕镜像分辨率降低可以有效地提升性能。
+有时候，可以通过降低镜像的分辨率来提高性能。
 
-我们可以将高度和宽度都限制在一定大小内（如 1024）：
+要同时限制宽度和高度到某个值 (例如 1024)：
 
 ```bash
 scrcpy --max-size 1024
-scrcpy -m 1024  # short version
+scrcpy -m 1024  # 简写
 ```
 
-较短的一边会被按比例缩小以保持设备的显示比例。
-这样，1920x1080 的设备会以 1024x576 的分辨率显示。
+另一边会被按比例缩小以保持设备的显示比例。这样，1920×1080 分辨率的设备会以 1024×576 的分辨率进行镜像。
 
 
-#### 修改画面比特率
+#### 修改码率
 
-默认的比特率是8Mbps。如果要改变画面的比特率 (比如说改成2Mbps)：
+默认码率是 8Mbps。要改变视频的码率 (例如改为 2Mbps)：
 
 ```bash
 scrcpy --bit-rate 2M
-scrcpy -b 2M  # short version
+scrcpy -b 2M  # 简写
 ```
 
-#### 限制画面帧率
+#### 限制帧率
 
-画面的帧率可以通过下面的命令被限制：
+要限制捕获的帧率：
 
 ```bash
 scrcpy --max-fps 15
 ```
 
-这个功能仅在Android 10和以后的版本被Android官方支持，但也有可能在更早的版本可用。
+本功能从 Android 10 开始才被官方支持，但在一些旧版本中也能生效。
 
 #### 画面裁剪
 
-设备画面可在裁切后进行镜像，以显示部分屏幕。
+可以对设备屏幕进行裁剪，只镜像屏幕的一部分。
 
-这项功能可以用于，例如，只显示Oculus Go的一只眼睛。
+例如可以只镜像 Oculus Go 的一只眼睛。
 
 ```bash
-scrcpy --crop 1224:1440:0:0   # 1224x1440 at offset (0,0)
+scrcpy --crop 1224:1440:0:0   # 以 (0,0) 为原点的 1224x1440 像素
 ```
 
-如果`--max-size`在同时被指定，分辨率的改变将在画面裁切后进行。
+如果同时指定了 `--max-size`，会先进行裁剪，再进行缩放。
 
 
-#### 锁定屏幕朝向
+#### 锁定屏幕方向
 
 
-可以使用如下命令锁定屏幕朝向：
+要锁定镜像画面的方向：
 
 ```bash
-scrcpy --lock-video-orientation 0   # 自然朝向
-scrcpy --lock-video-orientation 1   # 90° 逆时针旋转
+scrcpy --lock-video-orientation 0   # 自然方向
+scrcpy --lock-video-orientation 1   # 逆时针旋转 90°
 scrcpy --lock-video-orientation 2   # 180°
-scrcpy --lock-video-orientation 3   # 90° 顺时针旋转
+scrcpy --lock-video-orientation 3   # 顺时针旋转 90°
 ```
 
-该设定影响录制。
+只影响录制的方向。
 
+[窗口可以独立旋转](#旋转)。
+
+
+#### 编码器
+
+一些设备内置了多种编码器，但是有的编码器会导致问题或崩溃。可以手动选择其它编码器：
+
+```bash
+scrcpy --encoder OMX.qcom.video.encoder.avc
+```
+
+要列出可用的编码器，可以指定一个不存在的编码器名称，错误信息中会包含所有的编码器：
+
+```bash
+scrcpy --encoder _
+```
 
 ### 屏幕录制
 
-可以在屏幕镜像的同时录制视频：
+可以在镜像的同时录制视频：
 
 ```bash
 scrcpy --record file.mp4
 scrcpy -r file.mkv
 ```
 
-在不开启屏幕镜像的同时录制：
+仅录制，不显示镜像：
 
 ```bash
 scrcpy --no-display --record file.mp4
 scrcpy -Nr file.mkv
-# 按Ctrl+C以停止录制
+# 按 Ctrl+C 停止录制
 ```
 
-在显示中“被跳过的帧”会被录制，虽然它们由于性能原因没有实时显示。
-在传输中每一帧都有 _时间戳_ ，所以 [包时延变化] 并不影响录制的文件。
+录制时会包含“被跳过的帧”，即使它们由于性能原因没有实时显示。设备会为每一帧打上 _时间戳_ ，所以 [包时延抖动][packet delay variation] 不会影响录制的文件。
 
-[包时延变化]: https://en.wikipedia.org/wiki/Packet_delay_variation
+[packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
 
 
-### 连接方式
+### 连接
 
 #### 无线
 
-_Scrcpy_ 使用`adb`来与安卓设备连接。同时，`adb`能够通过TCP/IP[连接]到安卓设备:
+_Scrcpy_ 使用 `adb` 与设备通信，并且 `adb` 支持通过 TCP/IP [连接]到设备:
 
-1. 将您的安卓设备和电脑连接至同一Wi-Fi。
-2. 获取安卓设备的IP地址（在设置-关于手机-状态信息）。
-3. 打开安卓设备的网络adb功能`adb tcpip 5555`。
-4. 将您的设备与电脑断开连接。
-5. 连接到您的设备：`adb connect DEVICE_IP:5555` _(用设备IP替换 `DEVICE_IP`)_.
-6. 运行`scrcpy`。
+1. 将设备和电脑连接至同一 Wi-Fi。
+2. 打开 设置 → 关于手机 → 状态信息，获取设备的 IP 地址，也可以执行以下的命令：
+    ```bash
+    adb shell ip route | awk '{print $9}'
+    ```
 
-降低比特率和分辨率可能有助于性能：
+3. 启用设备的网络 adb 功能 `adb tcpip 5555`。
+4. 断开设备的 USB 连接。
+5. 连接到您的设备：`adb connect DEVICE_IP:5555` _(将 `DEVICE_IP` 替换为设备 IP)_.
+6. 正常运行 `scrcpy`。
+
+可能需要降低码率和分辨率：
 
 ```bash
 scrcpy --bit-rate 2M --max-size 800
-scrcpy -b2M -m800  # short version
+scrcpy -b2M -m800  # 简写
 ```
 
 [连接]: https://developer.android.com/studio/command-line/adb.html#wireless
@@ -255,18 +270,18 @@ scrcpy -b2M -m800  # short version
 
 #### 多设备
 
-如果多个设备在执行`adb devices`后被列出，您必须指定设备的 _序列号_ ：
+如果 `adb devices` 列出了多个设备，您必须指定设备的 _序列号_ ：
 
 ```bash
 scrcpy --serial 0123456789abcdef
-scrcpy -s 0123456789abcdef  # short version
+scrcpy -s 0123456789abcdef  # 简写
 ```
 
-如果设备是通过TCP/IP方式连接到电脑的：
+如果设备通过 TCP/IP 连接：
 
 ```bash
 scrcpy --serial 192.168.0.1:5555
-scrcpy -s 192.168.0.1:5555  # short version
+scrcpy -s 192.168.0.1:5555  # 简写
 ```
 
 您可以同时启动多个 _scrcpy_ 实例以同时显示多个设备的画面。
@@ -281,38 +296,38 @@ autoadb scrcpy -s '{}'
 
 [AutoAdb]: https://github.com/rom1v/autoadb
 
-#### SSH 连接
+#### SSH 隧道
 
-本地的 adb 可以远程连接到另一个 adb 服务器（假设两者的adb版本相同），来远程连接到设备：
+要远程连接到设备，可以将本地的 adb 客户端连接到远程的 adb 服务端 (需要两端的 _adb_ 协议版本相同)：
 
 ```bash
-adb kill-server    # 关闭本地5037端口上的adb服务器
+adb kill-server    # 关闭本地 5037 端口上的 adb 服务端
 ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
 # 保持该窗口开启
 ```
 
-从另一个终端：
+在另一个终端：
 
 ```bash
 scrcpy
 ```
 
-为了避免启动远程端口转发，你可以强制启动一个转发连接（注意`-L`和`-R`的区别：
+若要不使用远程端口转发，可以强制使用正向连接 (注意 `-L` 和 `-R` 的区别)：
 
 ```bash
-adb kill-server    # kill the local adb server on 5037
+adb kill-server    # 关闭本地 5037 端口上的 adb 服务端
 ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
 # 保持该窗口开启
 ```
 
-从另一个终端:
+在另一个终端:
 
 ```bash
 scrcpy --force-adb-forward
 ```
 
 
-和无线网络连接类似，下列设置可能对改善性能有帮助：
+类似无线网络连接，可能需要降低画面质量：
 
 ```
 scrcpy -b2M -m800 --max-fps 15
@@ -322,7 +337,7 @@ scrcpy -b2M -m800 --max-fps 15
 
 #### 标题
 
-窗口的标题默认为设备型号。您可以通过如下命令修改它：
+窗口的标题默认为设备型号。可以通过如下命令修改：
 
 ```bash
 scrcpy --window-title 'My device'
@@ -358,14 +373,14 @@ scrcpy --always-on-top
 
 ```bash
 scrcpy --fullscreen
-scrcpy -f  # short version
+scrcpy -f  # 简写
 ```
 
-全屏状态可以通过<kbd>MOD</kbd>+<kbd>f</kbd>实时改变。
+全屏状态可以通过 <kbd>MOD</kbd>+<kbd>f</kbd> 随时切换。
 
 #### 旋转
 
-通过如下命令，窗口可以旋转：
+可以通过以下命令旋转窗口：
 
 ```bash
 scrcpy --rotation 1
@@ -373,27 +388,23 @@ scrcpy --rotation 1
 
 可选的值有：
  - `0`: 无旋转
- - `1`: 逆时针旋转90°
- - `2`: 旋转180°
- - `3`: 顺时针旋转90°
+ - `1`: 逆时针旋转 90°
+ - `2`: 旋转 180°
+ - `3`: 顺时针旋转 90°
 
-这同样可以使用<kbd>MOD</kbd>+<kbd>←</kbd>
-_(左)_ 和 <kbd>MOD</kbd>+<kbd>→</kbd> _(右)_ 的快捷键实时更改。
+也可以使用 <kbd>MOD</kbd>+<kbd>←</kbd> _(左箭头)_ 和 <kbd>MOD</kbd>+<kbd>→</kbd> _(右箭头)_ 随时更改。
 
-需要注意的是， _scrcpy_ 控制三个不同的朝向：
- - <kbd>MOD</kbd>+<kbd>r</kbd> 请求设备在竖屏和横屏之间切换（如果前台应用程序不支持所请求的朝向，可能会拒绝该请求）。
-
- - `--lock-video-orientation` 改变镜像的朝向（设备镜像到电脑的画面朝向）。这会影响录制。
-
- - `--rotation` （或<kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>）
-   只旋转窗口的画面。这只影响显示，不影响录制。
+需要注意的是， _scrcpy_ 有三个不同的方向：
+ - <kbd>MOD</kbd>+<kbd>r</kbd> 请求设备在竖屏和横屏之间切换 (如果前台应用程序不支持请求的朝向，可能会拒绝该请求)。
+ - [`--lock-video-orientation`](#锁定屏幕方向) 改变镜像的朝向 (设备传输到电脑的画面的朝向)。这会影响录制。
+ - `--rotation` (或 <kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>) 只旋转窗口的内容。这只影响显示，不影响录制。
 
 
 ### 其他镜像设置
 
 #### 只读
 
-关闭电脑对设备的控制（如键盘输入、鼠标移动和文件传输）：
+禁用电脑对设备的控制 (如键盘输入、鼠标事件和文件拖放)：
 
 ```bash
 scrcpy --no-control
@@ -402,53 +413,49 @@ scrcpy -n
 
 #### 显示屏
 
-如果有多个显示屏可用，您可以选择特定显示屏进行镜像：
+如果设备有多个显示屏，可以选择要镜像的显示屏：
 
 ```bash
 scrcpy --display 1
 ```
 
-您可以通过如下命令找到显示屏的id：
+可以通过如下命令列出所有显示屏的 id：
 
 ```
-adb shell dumpsys display   # 在回显中搜索“mDisplayId=”
+adb shell dumpsys display   # 在输出中搜索 “mDisplayId=”
 ```
 
-第二显示屏可能只能在设备运行Android 10或以上的情况下被控制（它可能会在电脑上显示，但无法通过电脑操作）。
+控制第二显示屏需要设备运行 Android 10 或更高版本 (否则将在只读状态下镜像)。
 
 
 #### 保持常亮
 
-防止设备在已连接的状态下休眠：
+阻止设备在连接时休眠：
 
 ```bash
 scrcpy --stay-awake
 scrcpy -w
 ```
 
-程序关闭后，设备设置会恢复原样。
+程序关闭时会恢复设备原来的设置。
 
 
 #### 关闭设备屏幕
 
-在启动屏幕镜像时，可以通过如下命令关闭设备的屏幕：
+可以通过以下的命令行参数在关闭设备屏幕的状态下进行镜像：
 
 ```bash
 scrcpy --turn-screen-off
 scrcpy -S
 ```
 
-或者在需要的时候按<kbd>MOD</kbd>+<kbd>o</kbd>。
+或者在任何时候按 <kbd>MOD</kbd>+<kbd>o</kbd>。
 
-要重新打开屏幕的话，需要按<kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>.
+要重新打开屏幕，按下 <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>.
 
-在Android上,`电源`按钮始终能把屏幕打开。
+在Android上，`电源` 按钮始终能把屏幕打开。为了方便，对于在 _scrcpy_ 中发出的 `电源` 事件 (通过鼠标右键或 <kbd>MOD</kbd>+<kbd>p</kbd>)，会 (尽最大的努力) 在短暂的延迟后将屏幕关闭。设备上的 `电源` 按钮仍然能打开设备屏幕。
 
-为了方便，如果按下`电源`按钮的事件是通过 _scrcpy_ 发出的（通过点按鼠标右键或<kbd>MOD</kbd>+<kbd>p</kbd>），它会在短暂的延迟后将屏幕关闭。
-
-物理的`电源`按钮仍然能打开设备屏幕。
-
-同时，这项功能还能被用于防止设备休眠：
+还可以同时阻止设备休眠：
 
 ```bash
 scrcpy --turn-screen-off --stay-awake
@@ -456,11 +463,11 @@ scrcpy -Sw
 ```
 
 
-#### 渲染超时帧
+#### 渲染过期帧
 
-为了降低延迟， _scrcpy_ 默认渲染解码成功的最近一帧，并跳过前面任意帧。
+默认状态下，为了降低延迟， _scrcpy_ 永远渲染解码成功的最近一帧，并跳过前面任意帧。
 
-强制渲染所有帧（可能导致延迟变高）：
+强制渲染所有帧 (可能导致延迟变高)：
 
 ```bash
 scrcpy --render-expired-frames
@@ -468,9 +475,9 @@ scrcpy --render-expired-frames
 
 #### 显示触摸
 
-在展示时，有些时候可能会用到显示触摸点这项功能（在设备上显示）。
+在演示时，可能会需要显示物理触摸点 (在物理设备上的触摸点)。
 
-Android在 _开发者设置_ 中提供了这项功能。
+Android 在 _开发者选项_ 中提供了这项功能。
 
 _Scrcpy_ 提供一个选项可以在启动时开启这项功能并在退出时恢复初始设置：
 
@@ -479,12 +486,12 @@ scrcpy --show-touches
 scrcpy -t
 ```
 
-请注意这项功能只能显示 _物理_ 触摸（要用手在屏幕上触摸）。
+请注意这项功能只能显示 _物理_ 触摸 (用手指在屏幕上的触摸)。
 
 
 #### 关闭屏保
 
-_Scrcpy_ 不会默认关闭屏幕保护。
+_Scrcpy_ 默认不会阻止电脑上开启的屏幕保护。
 
 关闭屏幕保护：
 
@@ -497,64 +504,58 @@ scrcpy --disable-screensaver
 
 #### 旋转设备屏幕
 
-使用<kbd>MOD</kbd>+<kbd>r</kbd>以在竖屏和横屏模式之间切换。
+使用 <kbd>MOD</kbd>+<kbd>r</kbd> 在竖屏和横屏模式之间切换。
 
 需要注意的是，只有在前台应用程序支持所要求的模式时，才会进行切换。
 
-#### 复制黏贴
+#### 复制粘贴
 
-每次Android的剪贴板变化的时候，它都会被自动同步到电脑的剪贴板上。
+每次安卓的剪贴板变化时，其内容都会被自动同步到电脑的剪贴板上。
 
 所有的 <kbd>Ctrl</kbd> 快捷键都会被转发至设备。其中：
- - <kbd>Ctrl</kbd>+<kbd>c</kbd> 复制
- - <kbd>Ctrl</kbd>+<kbd>x</kbd> 剪切
- - <kbd>Ctrl</kbd>+<kbd>v</kbd> 黏贴 （在电脑到设备的剪贴板同步完成之后）
+ - <kbd>Ctrl</kbd>+<kbd>c</kbd> 通常执行复制
+ - <kbd>Ctrl</kbd>+<kbd>x</kbd> 通常执行剪切
+ - <kbd>Ctrl</kbd>+<kbd>v</kbd> 通常执行粘贴 (在电脑到设备的剪贴板同步完成之后)
 
-这通常如您所期望的那样运作。
+大多数时候这些按键都会执行以上的功能。
 
-但实际的行为取决于设备上的前台程序。
-例如 _Termux_ 在<kbd>Ctrl</kbd>+<kbd>c</kbd>被按下时发送 SIGINT，
-又如 _K-9 Mail_ 会新建一封新邮件。
+但实际的行为取决于设备上的前台程序。例如，_Termux_ 会在按下 <kbd>Ctrl</kbd>+<kbd>c</kbd> 时发送 SIGINT，又如 _K-9 Mail_ 会新建一封邮件。
 
-在这种情况下剪切复制黏贴（仅在Android >= 7时可用）：
- - <kbd>MOD</kbd>+<kbd>c</kbd> 注入 `COPY`（复制）
- - <kbd>MOD</kbd>+<kbd>x</kbd> 注入 `CUT`（剪切）
- - <kbd>MOD</kbd>+<kbd>v</kbd> 注入 `PASTE`（黏贴）（在电脑到设备的剪贴板同步完成之后）
+要在这种情况下进行剪切，复制和粘贴 (仅支持 Android >= 7)：
+ - <kbd>MOD</kbd>+<kbd>c</kbd> 注入 `COPY` (复制)
+ - <kbd>MOD</kbd>+<kbd>x</kbd> 注入 `CUT` (剪切)
+ - <kbd>MOD</kbd>+<kbd>v</kbd> 注入 `PASTE` (粘贴) (在电脑到设备的剪贴板同步完成之后)
 
-另外，<kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>可以将电脑的剪贴板内容转换为一串按键事件输入到设备。
-在应用程序不接受黏贴时（比如 _Termux_ ），这项功能可以排上一定的用场。
-需要注意的是，这项功能可能会导致非ASCII编码的内容出现错误。
+另外，<kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> 会将电脑的剪贴板内容转换为一串按键事件输入到设备。在应用程序不接受粘贴时 (比如 _Termux_)，这项功能可以派上一定的用场。不过这项功能可能会导致非 ASCII 编码的内容出现错误。
 
-**警告：** 将电脑剪贴板的内容黏贴至设备（无论是通过<kbd>Ctrl</kbd>+<kbd>v</kbd>还是<kbd>MOD</kbd>+<kbd>v</kbd>）
-都需要将内容保存至设备的剪贴板。如此，任何一个应用程序都可以读取它。
-您应当避免将敏感内容通过这种方式传输（如密码）。
+**警告：** 将电脑剪贴板的内容粘贴至设备 (无论是通过 <kbd>Ctrl</kbd>+<kbd>v</kbd> 还是 <kbd>MOD</kbd>+<kbd>v</kbd>) 都会将内容复制到设备的剪贴板。如此，任何安卓应用程序都能读取到。您应避免将敏感内容 (如密码) 通过这种方式粘贴。
 
+一些设备不支持通过程序设置剪贴板。通过 `--legacy-paste` 选项可以修改 <kbd>Ctrl</kbd>+<kbd>v</kbd> 和 <kbd>MOD</kbd>+<kbd>v</kbd> 的工作方式，使它们通过按键事件 (同 <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>) 来注入电脑剪贴板内容。
 
-#### 捏拉缩放
+#### 双指缩放
 
-模拟 “捏拉缩放”：<kbd>Ctrl</kbd>+_按住并移动鼠标_。
+模拟“双指缩放”：<kbd>Ctrl</kbd>+_按住并移动鼠标_。
 
-更准确的说，您需要在按住<kbd>Ctrl</kbd>的同时按住并移动鼠标。
-在鼠标左键松开之后，光标的任何操作都会相对于屏幕的中央进行。
+更准确的说，在按住鼠标左键时按住 <kbd>Ctrl</kbd>。直到松开鼠标左键，所有鼠标移动将以屏幕中心为原点，缩放或旋转内容 (如果应用支持)。
 
-具体来说， _scrcpy_ 使用“虚拟手指”以在相对于屏幕中央相反的位置产生触摸事件。
+实际上，_scrcpy_ 会在以屏幕中心对称的位置上生成由“虚拟手指”发出的额外触摸事件。
 
 
 #### 文字注入偏好
 
 打字的时候，系统会产生两种[事件][textevents]：
- - _按键事件_ ，代表一个按键被按下/松开。
- - _文本事件_ ，代表一个文本被输入。
+ - _按键事件_ ，代表一个按键被按下或松开。
+ - _文本事件_ ，代表一个字符被输入。
 
-程序默认使用按键事件来输入字母。只有这样，键盘才会在游戏中正常运作（尤其WASD键）。
+程序默认使用按键事件来输入字母。只有这样，键盘才会在游戏中正常运作 (例如 WASD 键)。
 
-但这也有可能[造成问题][prefertext]。如果您遇到了这样的问题，您可以通过下列操作避免它：
+但这也有可能[造成一些问题][prefertext]。如果您遇到了问题，可以通过以下方式避免：
 
 ```bash
 scrcpy --prefer-text
 ```
 
-（这会导致键盘在游戏中工作不正常）
+(这会导致键盘在游戏中工作不正常)
 
 [textevents]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-text-input
 [prefertext]: https://github.com/Genymobile/scrcpy/issues/650#issuecomment-512945343
@@ -562,8 +563,7 @@ scrcpy --prefer-text
 
 #### 按键重复
 
-当你一直按着一个按键不放时，程序默认产生多个按键事件。
-在某些游戏中这可能会导致性能问题。
+默认状态下，按住一个按键不放会生成多个重复按键事件。在某些游戏中这可能会导致性能问题。
 
 避免转发重复按键事件：
 
@@ -572,18 +572,27 @@ scrcpy --no-key-repeat
 ```
 
 
-### 文件传输
+#### 右键和中键
+
+默认状态下，右键会触发返回键 (或电源键)，中键会触发 HOME 键。要禁用这些快捷键并把所有点击转发到设备：
+
+```bash
+scrcpy --forward-all-clicks
+```
+
+
+### 文件拖放
 
 #### 安装APK
 
-如果您要要安装APK，请拖放APK文件（文件名以`.apk`结尾）到 _scrcpy_ 窗口。
+将 APK 文件 (文件名以 `.apk` 结尾) 拖放到 _scrcpy_ 窗口来安装。
 
 该操作在屏幕上不会出现任何变化，而会在控制台输出一条日志。
 
 
 #### 将文件推送至设备
 
-如果您要推送文件到设备的 `/sdcard/`，请拖放文件至（不能是APK文件）_scrcpy_ 窗口。
+要推送文件到设备的 `/sdcard/`，将 (非 APK) 文件拖放至 _scrcpy_ 窗口。
 
 该操作没有可见的响应，只会在控制台输出日志。
 
@@ -596,7 +605,7 @@ scrcpy --push-target /sdcard/foo/bar/
 
 ### 音频转发
 
-_scrcpy_ 不支持音频。请使用 [sndcpy].
+_Scrcpy_ 不支持音频。请使用 [sndcpy].
 
 另外请阅读 [issue #14]。
 
@@ -604,93 +613,90 @@ _scrcpy_ 不支持音频。请使用 [sndcpy].
 [issue #14]: https://github.com/Genymobile/scrcpy/issues/14
 
 
-## 热键
+## 快捷键
 
-在下列表格中, <kbd>MOD</kbd> 是热键的修饰键。
-默认是（左）<kbd>Alt</kbd>或者（左）<kbd>Super</kbd>。
+在以下列表中, <kbd>MOD</kbd> 是快捷键的修饰键。
+默认是 (左) <kbd>Alt</kbd> 或 (左) <kbd>Super</kbd>。
 
-您可以使用 `--shortcut-mod`后缀来修改它。可选的按键有`lctrl`、`rctrl`、
-`lalt`、`ralt`、`lsuper`和`rsuper`。如下例：
+您可以使用 `--shortcut-mod` 来修改。可选的按键有 `lctrl`、`rctrl`、`lalt`、`ralt`、`lsuper` 和 `rsuper`。例如：
 
 ```bash
-# 使用右侧的Ctrl键
+# 使用右 Ctrl 键
 scrcpy --shortcut-mod=rctrl
 
-# 使用左侧的Ctrl键、Alt键或Super键
+# 使用左 Ctrl 键 + 左 Alt 键，或 Super 键
 scrcpy --shortcut-mod=lctrl+lalt,lsuper
 ```
 
-_一般来说，<kbd>[Super]</kbd>就是<kbd>Windows</kbd>或者<kbd>Cmd</kbd>。_
+_<kbd>[Super]</kbd> 键通常是指 <kbd>Windows</kbd> 或 <kbd>Cmd</kbd> 键。_
 
 [Super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button)
 
- | 操作                                        |   快捷键
- | ------------------------------------------- |:-----------------------------
- | 全屏                                        | <kbd>MOD</kbd>+<kbd>f</kbd>
- | 向左旋转屏幕                                 | <kbd>MOD</kbd>+<kbd>←</kbd> _(左)_
- | 向右旋转屏幕                                 | <kbd>MOD</kbd>+<kbd>→</kbd> _(右)_
- | 将窗口大小重置为1:1 (像素优先)                | <kbd>MOD</kbd>+<kbd>g</kbd>
- | 将窗口大小重置为消除黑边                      | <kbd>MOD</kbd>+<kbd>w</kbd> \| _双击¹_
- | 点按 `主屏幕`                                | <kbd>MOD</kbd>+<kbd>h</kbd> \| _点击鼠标中键_
- | 点按 `返回`                                  | <kbd>MOD</kbd>+<kbd>b</kbd> \| _点击鼠标右键²_
- | 点按 `切换应用`                              | <kbd>MOD</kbd>+<kbd>s</kbd>
- | 点按 `菜单` （解锁屏幕）                      | <kbd>MOD</kbd>+<kbd>m</kbd>
- | 点按 `音量+`                                | <kbd>MOD</kbd>+<kbd>↑</kbd> _(up)_
- | 点按 `音量-`                                | <kbd>MOD</kbd>+<kbd>↓</kbd> _(down)_
- | 点按 `电源`                                 | <kbd>MOD</kbd>+<kbd>p</kbd>
- | 打开屏幕                                    | _点击鼠标右键²_
- | 关闭设备屏幕（但继续在电脑上显示）             | <kbd>MOD</kbd>+<kbd>o</kbd>
- | 打开设备屏幕                                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
- | 旋转设备屏幕                                 | <kbd>MOD</kbd>+<kbd>r</kbd>
- | 展开通知面板                                 | <kbd>MOD</kbd>+<kbd>n</kbd>
- | 展开快捷操作                                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
- | 复制到剪贴板³                                | <kbd>MOD</kbd>+<kbd>c</kbd>
- | 剪切到剪贴板³                                | <kbd>MOD</kbd>+<kbd>x</kbd>
- | 同步剪贴板并黏贴³                            | <kbd>MOD</kbd>+<kbd>v</kbd>
- | 导入电脑剪贴板文本                           | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
- | 打开/关闭FPS显示（在 stdout)                 | <kbd>MOD</kbd>+<kbd>i</kbd>
- | 捏拉缩放                                    | <kbd>Ctrl</kbd>+_点按并移动鼠标_
+ | 操作                              | 快捷键                                       |
+ | --------------------------------- | :------------------------------------------- |
+ | 全屏                              | <kbd>MOD</kbd>+<kbd>f</kbd>                  |
+ | 向左旋转屏幕                      | <kbd>MOD</kbd>+<kbd>←</kbd> _(左箭头)_       |
+ | 向右旋转屏幕                      | <kbd>MOD</kbd>+<kbd>→</kbd> _(右箭头)_       |
+ | 将窗口大小重置为1:1 (匹配像素)    | <kbd>MOD</kbd>+<kbd>g</kbd>                  |
+ | 将窗口大小重置为消除黑边          | <kbd>MOD</kbd>+<kbd>w</kbd> \| _双击¹_       |
+ | 点按 `主屏幕`                     | <kbd>MOD</kbd>+<kbd>h</kbd> \| _鼠标中键_    |
+ | 点按 `返回`                       | <kbd>MOD</kbd>+<kbd>b</kbd> \| _鼠标右键²_   |
+ | 点按 `切换应用`                   | <kbd>MOD</kbd>+<kbd>s</kbd>                  |
+ | 点按 `菜单` (解锁屏幕)            | <kbd>MOD</kbd>+<kbd>m</kbd>                  |
+ | 点按 `音量+`                      | <kbd>MOD</kbd>+<kbd>↑</kbd> _(上箭头)_       |
+ | 点按 `音量-`                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(下箭头)_       |
+ | 点按 `电源`                       | <kbd>MOD</kbd>+<kbd>p</kbd>                  |
+ | 打开屏幕                          | _鼠标右键²_                                  |
+ | 关闭设备屏幕 (但继续在电脑上显示) | <kbd>MOD</kbd>+<kbd>o</kbd>                  |
+ | 打开设备屏幕                      | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd> |
+ | 旋转设备屏幕                      | <kbd>MOD</kbd>+<kbd>r</kbd>                  |
+ | 展开通知面板                      | <kbd>MOD</kbd>+<kbd>n</kbd>                  |
+ | 收起通知面板                      | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd> |
+ | 复制到剪贴板³                     | <kbd>MOD</kbd>+<kbd>c</kbd>                  |
+ | 剪切到剪贴板³                     | <kbd>MOD</kbd>+<kbd>x</kbd>                  |
+ | 同步剪贴板并粘贴³                 | <kbd>MOD</kbd>+<kbd>v</kbd>                  |
+ | 注入电脑剪贴板文本                | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> |
+ | 打开/关闭FPS显示 (在 stdout)      | <kbd>MOD</kbd>+<kbd>i</kbd>                  |
+ | 捏拉缩放                          | <kbd>Ctrl</kbd>+_按住并移动鼠标_             |
 
-_¹双击黑色边界以关闭黑色边界_  
-_²点击鼠标右键将在屏幕熄灭时点亮屏幕，其余情况则视为按下 返回键 。_  
+_¹双击黑边可以去除黑边_
+_²点击鼠标右键将在屏幕熄灭时点亮屏幕，其余情况则视为按下返回键 。_
 _³需要安卓版本 Android >= 7。_
 
-所有的 <kbd>Ctrl</kbd>+_按键_ 的热键都是被转发到设备进行处理的，所以实际上会由当前应用程序对其做出响应。
+所有的 <kbd>Ctrl</kbd>+_按键_ 的快捷键都会被转发到设备，所以会由当前应用程序进行处理。
 
 
 ## 自定义路径
 
-为了使用您想使用的 _adb_ ，您可以在环境变量
-`ADB`中设置它的路径：
+要使用指定的 _adb_ 二进制文件，可以设置环境变量 `ADB`：
 
     ADB=/path/to/adb scrcpy
 
-如果需要覆盖`scrcpy-server`的路径，您可以在
-`SCRCPY_SERVER_PATH`中设置它。
+要覆盖 `scrcpy-server` 的路径，可以设置 `SCRCPY_SERVER_PATH`。
 
 [useful]: https://github.com/Genymobile/scrcpy/issues/278#issuecomment-429330345
 
 
 ## 为什么叫 _scrcpy_ ？
 
-一个同事让我找出一个和[gnirehtet]一样难以发音的名字。
+一个同事让我找出一个和 [gnirehtet] 一样难以发音的名字。
 
-[`strcpy`] 可以复制**str**ing； `scrcpy` 可以复制**scr**een。
+[`strcpy`] 复制一个 **str**ing； `scrcpy` 复制一个 **scr**een。
 
 [gnirehtet]: https://github.com/Genymobile/gnirehtet
 [`strcpy`]: http://man7.org/linux/man-pages/man3/strcpy.3.html
 
 
-## 如何编译？
+## 如何构建？
 
-请查看[编译]。
+请查看[BUILD]。
 
-[编译]: BUILD.md
+[BUILD]: BUILD.md
 
 
 ## 常见问题
 
-请查看[FAQ](FAQ.md).
+请查看[FAQ](FAQ.md)。
 
 
 ## 开发者
@@ -703,7 +709,7 @@ _³需要安卓版本 Android >= 7。_
 ## 许可协议
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2020 Romain Vimont
+    Copyright (C) 2018-2021 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.zh-Hant.md

@@ -80,10 +80,7 @@ apt install scrcpy
 
 為了保持簡單，Windows 用戶可以下載一個包含所有必需軟體 (包含 `adb`) 的壓縮包:
 
-- [`scrcpy-win64-v1.15.zip`][direct-win64]  
-   _(SHA-256: dd514bb591e63ef4cd52a53c30f1153a28f59722d64690eb07bd017849edcba2)_
-
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.15/scrcpy-win64-v1.15.zip
+ - [README](README.md#windows)
 
 [Chocolatey] 上也可以下載:
 
@@ -682,7 +679,7 @@ _³只支援 Android 7+。_
 ## Licence
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2020 Romain Vimont
+    Copyright (C) 2018-2021 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

app/meson.build

@@ -1,29 +1,75 @@
 src = [
     'src/main.c',
+    'src/adb.c',
+    'src/adb_tunnel.c',
     'src/cli.c',
-    'src/command.c',
+    'src/clock.c',
+    'src/compat.c',
     'src/control_msg.c',
     'src/controller.c',
     'src/decoder.c',
-    'src/device.c',
     'src/device_msg.c',
-    'src/event_converter.c',
+    'src/icon.c',
     'src/file_handler.c',
     'src/fps_counter.c',
+    'src/frame_buffer.c',
     'src/input_manager.c',
+    'src/keyboard_inject.c',
+    'src/mouse_inject.c',
     'src/opengl.c',
+    'src/options.c',
     'src/receiver.c',
     'src/recorder.c',
     'src/scrcpy.c',
     'src/screen.c',
     'src/server.c',
     'src/stream.c',
-    'src/tiny_xpm.c',
     'src/video_buffer.c',
+    'src/util/file.c',
+    'src/util/intr.c',
+    'src/util/log.c',
     'src/util/net.c',
-    'src/util/str_util.c'
+    'src/util/net_intr.c',
+    'src/util/process.c',
+    'src/util/process_intr.c',
+    'src/util/strbuf.c',
+    'src/util/str.c',
+    'src/util/term.c',
+    'src/util/thread.c',
+    'src/util/tick.c',
 ]
 
+if host_machine.system() == 'windows'
+    src += [
+        'src/sys/win/file.c',
+        'src/sys/win/process.c',
+    ]
+else
+    src += [
+        'src/sys/unix/file.c',
+        'src/sys/unix/process.c',
+    ]
+endif
+
+v4l2_support = host_machine.system() == 'linux'
+if v4l2_support
+    src += [ 'src/v4l2_sink.c' ]
+endif
+
+aoa_hid_support = host_machine.system() == 'linux'
+if aoa_hid_support
+    src += [
+        'src/aoa_hid.c',
+        'src/hid_keyboard.c',
+    ]
+endif
+
+check_functions = [
+    'strdup'
+]
+
+cc = meson.get_compiler('c')
+
 if not get_option('crossbuild_windows')
 
     # native build
@@ -34,11 +80,16 @@ if not get_option('crossbuild_windows')
         dependency('sdl2'),
     ]
 
+    if v4l2_support
+        dependencies += dependency('libavdevice')
+    endif
+
+    if aoa_hid_support
+        dependencies += dependency('libusb-1.0')
+    endif
+
 else
-
     # cross-compile mingw32 build (from Linux to Windows)
-    cc = meson.get_compiler('c')
-
     prebuilt_sdl2 = meson.get_cross_property('prebuilt_sdl2')
     sdl2_bin_dir = meson.current_source_dir() + '/../prebuilt-deps/' + prebuilt_sdl2 + '/bin'
     sdl2_lib_dir = meson.current_source_dir() + '/../prebuilt-deps/' + prebuilt_sdl2 + '/lib'
@@ -73,19 +124,18 @@ else
 
 endif
 
-cc = meson.get_compiler('c')
-
 if host_machine.system() == 'windows'
-    src += [ 'src/sys/win/command.c' ]
     dependencies += cc.find_library('ws2_32')
-else
-    src += [ 'src/sys/unix/command.c' ]
 endif
 
 conf = configuration_data()
 
-# expose the build type
-conf.set('NDEBUG', get_option('buildtype') != 'debug')
+foreach f : check_functions
+  if cc.has_function(f)
+    define = 'HAVE_' + f.underscorify().to_upper()
+    conf.set(define, true)
+  endif
+endforeach
 
 # the version, updated on release
 conf.set_quoted('SCRCPY_VERSION', meson.project_version())
@@ -102,50 +152,36 @@ conf.set('PORTABLE', get_option('portable'))
 conf.set('DEFAULT_LOCAL_PORT_RANGE_FIRST', '27183')
 conf.set('DEFAULT_LOCAL_PORT_RANGE_LAST', '27199')
 
-# the default max video size for both dimensions, in pixels
-# overridden by option --max-size
-conf.set('DEFAULT_MAX_SIZE', '0')  # 0: unlimited
-
-# the default video orientation
-# natural device orientation is 0 and each increment adds 90 degrees
-# counterclockwise
-# overridden by option --lock-video-orientation
-conf.set('DEFAULT_LOCK_VIDEO_ORIENTATION', '-1')  # -1: unlocked
-
 # the default video bitrate, in bits/second
 # overridden by option --bit-rate
 conf.set('DEFAULT_BIT_RATE', '8000000')  # 8Mbps
 
-# enable High DPI support
-conf.set('HIDPI_SUPPORT', get_option('hidpi_support'))
-
-# disable console on Windows
-conf.set('WINDOWS_NOCONSOLE', get_option('windows_noconsole'))
-
 # run a server debugger and wait for a client to be attached
 conf.set('SERVER_DEBUGGER', get_option('server_debugger'))
 
 # select the debugger method ('old' for Android < 9, 'new' for Android >= 9)
 conf.set('SERVER_DEBUGGER_METHOD_NEW', get_option('server_debugger_method') == 'new')
 
+# enable V4L2 support (linux only)
+conf.set('HAVE_V4L2', v4l2_support)
+
+# enable HID over AOA support (linux only)
+conf.set('HAVE_AOA_HID', aoa_hid_support)
+
 configure_file(configuration: conf, output: 'config.h')
 
 src_dir = include_directories('src')
 
-if get_option('windows_noconsole')
-    link_args = [ '-Wl,--subsystem,windows' ]
-else
-    link_args = []
-endif
-
 executable('scrcpy', src,
            dependencies: dependencies,
            include_directories: src_dir,
            install: true,
-           c_args: [],
-           link_args: link_args)
+           c_args: [])
 
 install_man('scrcpy.1')
+install_data('../data/icon.png',
+             rename: 'scrcpy.png',
+             install_dir: 'share/icons/hicolor/256x256/apps')
 
 
 ### TESTS
@@ -162,12 +198,20 @@ if get_option('buildtype') == 'debug'
         ['test_cli', [
             'tests/test_cli.c',
             'src/cli.c',
-            'src/util/str_util.c',
+            'src/options.c',
+            'src/util/str.c',
+            'src/util/strbuf.c',
+            'src/util/term.c',
+        ]],
+        ['test_clock', [
+            'tests/test_clock.c',
+            'src/clock.c',
         ]],
         ['test_control_msg_serialize', [
             'tests/test_control_msg_serialize.c',
             'src/control_msg.c',
-            'src/util/str_util.c',
+            'src/util/str.c',
+            'src/util/strbuf.c',
         ]],
         ['test_device_msg_deserialize', [
             'tests/test_device_msg_deserialize.c',
@@ -176,9 +220,14 @@ if get_option('buildtype') == 'debug'
         ['test_queue', [
             'tests/test_queue.c',
         ]],
-        ['test_strutil', [
-            'tests/test_strutil.c',
-            'src/util/str_util.c',
+        ['test_strbuf', [
+            'tests/test_strbuf.c',
+            'src/util/strbuf.c',
+        ]],
+        ['test_str', [
+            'tests/test_str.c',
+            'src/util/str.c',
+            'src/util/strbuf.c',
         ]],
     ]
 

app/scrcpy.1

@@ -56,6 +56,12 @@ The list of possible display ids can be listed by "adb shell dumpsys display"
 
 Default is 0.
 
+.TP
+.BI "\-\-display\-buffer ms
+Add a buffering delay (in milliseconds) before displaying. This increases latency to compensate for jitter.
+
+Default is 0 (no buffering).
+
 .TP
 .BI "\-\-encoder " name
 Use a specific MediaCodec encoder (must be a H.264 encoder).
@@ -76,6 +82,14 @@ Start in fullscreen.
 .B \-h, \-\-help
 Print this help.
 
+.TP
+.B \-K, \-\-hid\-keyboard
+Simulate a physical keyboard by using HID over AOAv2.
+
+This provides a better experience for IME users, and allows to generate non-ASCII characters, contrary to the default injection method.
+
+It may only work over USB, and is currently only supported on Linux.
+
 .TP
 .B \-\-legacy\-paste
 Inject computer clipboard text as a sequence of key events on Ctrl+v (like MOD+Shift+v).
@@ -83,10 +97,12 @@ Inject computer clipboard text as a sequence of key events on Ctrl+v (like MOD+S
 This is a workaround for some devices not behaving as expected when setting the device clipboard programmatically.
 
 .TP
-.BI "\-\-lock\-video\-orientation " value
-Lock video orientation to \fIvalue\fR. Possible values are -1 (unlocked), 0, 1, 2 and 3. Natural device orientation is 0, and each increment adds a 90 degrees otation counterclockwise.
+.BI "\-\-lock\-video\-orientation[=value]
+Lock video orientation to \fIvalue\fR. Possible values are "unlocked", "initial" (locked to the initial orientation), 0, 1, 2 and 3. Natural device orientation is 0, and each increment adds a 90 degrees rotation counterclockwise.
 
-Default is -1 (unlocked).
+Default is "unlocked".
+
+Passing the option without argument is equivalent to passing "initial".
 
 .TP
 .BI "\-\-max\-fps " value
@@ -120,6 +136,10 @@ Set the TCP port (range) used by the client to listen.
 
 Default is 27183:27199.
 
+.TP
+.B \-\-power\-off\-on\-close
+Turn the device screen off when closing scrcpy.
+
 .TP
 .B \-\-prefer\-text
 Inject alpha characters and space as text events instead of key events.
@@ -131,7 +151,7 @@ but breaks the expected behavior of alpha keys in games (typically WASD).
 .BI "\-\-push\-target " path
 Set the target directory for pushing files to the device by drag & drop. It is passed as\-is to "adb push".
 
-Default is "/sdcard/".
+Default is "/sdcard/Download/".
 
 .TP
 .BI "\-r, \-\-record " file
@@ -155,10 +175,6 @@ Supported names are currently "direct3d", "opengl", "opengles2", "opengles", "me
 .UR https://wiki.libsdl.org/SDL_HINT_RENDER_DRIVER
 .UE
 
-.TP
-.B \-\-render\-expired\-frames
-By default, to minimize latency, scrcpy always renders the last available decoded frame, and drops any previous ones. This flag forces to render all frames, at a cost of a possible increased latency.
-
 .TP
 .BI "\-\-rotation " value
 Set the initial display rotation. Possibles values are 0, 1, 2 and 3. Each increment adds a 90 degrees rotation counterclockwise.
@@ -188,15 +204,29 @@ Enable "show touches" on start, restore the initial value on exit.
 It only shows physical touches (not clicks from scrcpy).
 
 .TP
-.B \-v, \-\-version
-Print the version of scrcpy.
+.BI "\-\-v4l2-sink " /dev/videoN
+Output to v4l2loopback device.
+
+It requires to lock the video orientation (see \fB\-\-lock\-video\-orientation\fR).
+
+.TP
+.BI "\-\-v4l2-buffer " ms
+Add a buffering delay (in milliseconds) before pushing frames. This increases latency to compensate for jitter.
+
+This option is similar to \fB\-\-display\-buffer\fR, but specific to V4L2 sink.
+
+Default is 0 (no buffering).
 
 .TP
 .BI "\-V, \-\-verbosity " value
-Set the log level ("debug", "info", "warn" or "error").
+Set the log level ("verbose", "debug", "info", "warn" or "error").
 
 Default is "info" for release builds, "debug" for debug builds.
 
+.TP
+.B \-v, \-\-version
+Print the version of scrcpy.
+
 .TP
 .B \-w, \-\-stay-awake
 Keep the device on while scrcpy is running, when the device is plugged in.
@@ -213,30 +243,30 @@ Set a custom window title.
 .BI "\-\-window\-x " value
 Set the initial window horizontal position.
 
-Default is "auto".\n
+Default is "auto".
 
 .TP
 .BI "\-\-window\-y " value
 Set the initial window vertical position.
 
-Default is "auto".\n
+Default is "auto".
 
 .TP
 .BI "\-\-window\-width " value
 Set the initial window width.
 
-Default is 0 (automatic).\n
+Default is 0 (automatic).
 
 .TP
 .BI "\-\-window\-height " value
 Set the initial window height.
 
-Default is 0 (automatic).\n
+Default is 0 (automatic).
 
 .SH SHORTCUTS
 
 In the following list, MOD is the shortcut modifier. By default, it's (left)
-Alt or (left) Super, but it can be configured by \-\-shortcut-mod (see above).
+Alt or (left) Super, but it can be configured by \fB\-\-shortcut\-mod\fR (see above).
 
 .TP
 .B MOD+f
@@ -338,6 +368,10 @@ Pinch-to-zoom from the center of the screen
 .B Drag & drop APK file
 Install APK from computer
 
+.TP
+.B Drag & drop non-APK file
+Push file to device (see \fB\-\-push\-target\fR)
+
 
 .SH Environment variables
 

app/src/adb.c

@@ -1,14 +1,13 @@
-#include "command.h"
+#include "adb.h"
 
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#include "config.h"
-#include "common.h"
+#include "util/file.h"
 #include "util/log.h"
-#include "util/str_util.h"
+#include "util/str.h"
 
 static const char *adb_command;
 
@@ -70,7 +69,7 @@ show_adb_installation_msg() {
         {"pacman", "pacman -S android-tools"},
     };
     for (size_t i = 0; i < ARRAY_LEN(pkg_managers); ++i) {
-        if (cmd_search(pkg_managers[i].binary)) {
+        if (sc_file_executable_exists(pkg_managers[i].binary)) {
             LOGI("You may install 'adb' by \"%s\"", pkg_managers[i].command);
             return;
         }
@@ -82,51 +81,73 @@ show_adb_installation_msg() {
 }
 
 static void
-show_adb_err_msg(enum process_result err, const char *const argv[]) {
-    char buf[512];
+show_adb_err_msg(enum sc_process_result err, const char *const argv[]) {
+#define MAX_COMMAND_STRING_LEN 1024
+    char *buf = malloc(MAX_COMMAND_STRING_LEN);
+    if (!buf) {
+        LOGE("Failed to execute (could not allocate error message)");
+        return;
+    }
+
     switch (err) {
-        case PROCESS_ERROR_GENERIC:
-            argv_to_string(argv, buf, sizeof(buf));
+        case SC_PROCESS_ERROR_GENERIC:
+            argv_to_string(argv, buf, MAX_COMMAND_STRING_LEN);
             LOGE("Failed to execute: %s", buf);
             break;
-        case PROCESS_ERROR_MISSING_BINARY:
-            argv_to_string(argv, buf, sizeof(buf));
+        case SC_PROCESS_ERROR_MISSING_BINARY:
+            argv_to_string(argv, buf, MAX_COMMAND_STRING_LEN);
             LOGE("Command not found: %s", buf);
             LOGE("(make 'adb' accessible from your PATH or define its full"
                  "path in the ADB environment variable)");
             show_adb_installation_msg();
             break;
-        case PROCESS_SUCCESS:
+        case SC_PROCESS_SUCCESS:
             // do nothing
             break;
     }
+
+    free(buf);
 }
 
-process_t
-adb_execute(const char *serial, const char *const adb_cmd[], size_t len) {
-    const char *cmd[len + 4];
+sc_pid
+adb_execute_p(const char *serial, const char *const adb_cmd[],
+              size_t len, sc_pipe *pin, sc_pipe *pout, sc_pipe *perr) {
     int i;
-    process_t process;
-    cmd[0] = get_adb_command();
+    sc_pid pid;
+
+    const char **argv = malloc((len + 4) * sizeof(*argv));
+    if (!argv) {
+        return SC_PROCESS_NONE;
+    }
+
+    argv[0] = get_adb_command();
     if (serial) {
-        cmd[1] = "-s";
-        cmd[2] = serial;
+        argv[1] = "-s";
+        argv[2] = serial;
         i = 3;
     } else {
         i = 1;
     }
 
-    memcpy(&cmd[i], adb_cmd, len * sizeof(const char *));
-    cmd[len + i] = NULL;
-    enum process_result r = cmd_execute(cmd, &process);
-    if (r != PROCESS_SUCCESS) {
-        show_adb_err_msg(r, cmd);
-        return PROCESS_NONE;
+    memcpy(&argv[i], adb_cmd, len * sizeof(const char *));
+    argv[len + i] = NULL;
+    enum sc_process_result r =
+        sc_process_execute_p(argv, &pid, pin, pout, perr);
+    if (r != SC_PROCESS_SUCCESS) {
+        show_adb_err_msg(r, argv);
+        pid = SC_PROCESS_NONE;
     }
-    return process;
+
+    free(argv);
+    return pid;
 }
 
-process_t
+sc_pid
+adb_execute(const char *serial, const char *const adb_cmd[], size_t len) {
+    return adb_execute_p(serial, adb_cmd, len, NULL, NULL, NULL);
+}
+
+sc_pid
 adb_forward(const char *serial, uint16_t local_port,
             const char *device_socket_name) {
     char local[4 + 5 + 1]; // tcp:PORT
@@ -137,7 +158,7 @@ adb_forward(const char *serial, uint16_t local_port,
     return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
 }
 
-process_t
+sc_pid
 adb_forward_remove(const char *serial, uint16_t local_port) {
     char local[4 + 5 + 1]; // tcp:PORT
     sprintf(local, "tcp:%" PRIu16, local_port);
@@ -145,7 +166,7 @@ adb_forward_remove(const char *serial, uint16_t local_port) {
     return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
 }
 
-process_t
+sc_pid
 adb_reverse(const char *serial, const char *device_socket_name,
             uint16_t local_port) {
     char local[4 + 5 + 1]; // tcp:PORT
@@ -156,7 +177,7 @@ adb_reverse(const char *serial, const char *device_socket_name,
     return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
 }
 
-process_t
+sc_pid
 adb_reverse_remove(const char *serial, const char *device_socket_name) {
     char remote[108 + 14 + 1]; // localabstract:NAME
     snprintf(remote, sizeof(remote), "localabstract:%s", device_socket_name);
@@ -164,68 +185,93 @@ adb_reverse_remove(const char *serial, const char *device_socket_name) {
     return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
 }
 
-process_t
+sc_pid
 adb_push(const char *serial, const char *local, const char *remote) {
 #ifdef __WINDOWS__
     // Windows will parse the string, so the paths must be quoted
     // (see sys/win/command.c)
-    local = strquote(local);
+    local = sc_str_quote(local);
     if (!local) {
-        return PROCESS_NONE;
+        return SC_PROCESS_NONE;
     }
-    remote = strquote(remote);
+    remote = sc_str_quote(remote);
     if (!remote) {
-        SDL_free((void *) local);
-        return PROCESS_NONE;
+        free((void *) local);
+        return SC_PROCESS_NONE;
     }
 #endif
 
     const char *const adb_cmd[] = {"push", local, remote};
-    process_t proc = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
+    sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
 
 #ifdef __WINDOWS__
-    SDL_free((void *) remote);
-    SDL_free((void *) local);
+    free((void *) remote);
+    free((void *) local);
 #endif
 
-    return proc;
+    return pid;
 }
 
-process_t
+sc_pid
 adb_install(const char *serial, const char *local) {
 #ifdef __WINDOWS__
     // Windows will parse the string, so the local name must be quoted
     // (see sys/win/command.c)
-    local = strquote(local);
+    local = sc_str_quote(local);
     if (!local) {
-        return PROCESS_NONE;
+        return SC_PROCESS_NONE;
     }
 #endif
 
     const char *const adb_cmd[] = {"install", "-r", local};
-    process_t proc = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
+    sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
 
 #ifdef __WINDOWS__
-    SDL_free((void *) local);
+    free((void *) local);
 #endif
 
-    return proc;
+    return pid;
 }
 
-bool
-process_check_success(process_t proc, const char *name) {
-    if (proc == PROCESS_NONE) {
-        LOGE("Could not execute \"%s\"", name);
-        return false;
+static ssize_t
+adb_execute_for_output(const char *serial, const char *const adb_cmd[],
+                       size_t adb_cmd_len, char *buf, size_t buf_len,
+                       const char *name) {
+    sc_pipe pout;
+    sc_pid pid = adb_execute_p(serial, adb_cmd, adb_cmd_len, NULL, &pout, NULL);
+
+    ssize_t r = sc_pipe_read_all(pout, buf, buf_len);
+    sc_pipe_close(pout);
+
+    if (!sc_process_check_success(pid, name, true)) {
+        return -1;
     }
-    exit_code_t exit_code;
-    if (!cmd_simple_wait(proc, &exit_code)) {
-        if (exit_code != NO_EXIT_CODE) {
-            LOGE("\"%s\" returned with value %" PRIexitcode, name, exit_code);
-        } else {
-            LOGE("\"%s\" exited unexpectedly", name);
-        }
-        return false;
-    }
-    return true;
+
+    return r;
+}
+
+static size_t
+truncate_first_line(char *data, size_t len) {
+    data[len - 1] = '\0';
+    char *eol = strpbrk(data, "\r\n");
+    if (eol) {
+        *eol = '\0';
+        len = eol - data;
+    }
+    return len;
+}
+
+char *
+adb_get_serialno(void) {
+    char buf[128];
+
+    const char *const adb_cmd[] = {"get-serialno"};
+    ssize_t r = adb_execute_for_output(NULL, adb_cmd, ARRAY_LEN(adb_cmd),
+                                       buf, sizeof(buf), "get-serialno");
+    if (r <= 0) {
+        return NULL;
+    }
+
+    truncate_first_line(buf, r);
+    return strdup(buf);
 }

app/src/adb.h

@@ -0,0 +1,42 @@
+#ifndef SC_ADB_H
+#define SC_ADB_H
+
+#include "common.h"
+
+#include <stdbool.h>
+#include <inttypes.h>
+
+#include "util/process.h"
+
+sc_pid
+adb_execute(const char *serial, const char *const adb_cmd[], size_t len);
+
+sc_pid
+adb_execute_p(const char *serial, const char *const adb_cmd[],
+              size_t len, sc_pipe *pin, sc_pipe *pout, sc_pipe *perr);
+
+sc_pid
+adb_forward(const char *serial, uint16_t local_port,
+            const char *device_socket_name);
+
+sc_pid
+adb_forward_remove(const char *serial, uint16_t local_port);
+
+sc_pid
+adb_reverse(const char *serial, const char *device_socket_name,
+            uint16_t local_port);
+
+sc_pid
+adb_reverse_remove(const char *serial, const char *device_socket_name);
+
+sc_pid
+adb_push(const char *serial, const char *local, const char *remote);
+
+sc_pid
+adb_install(const char *serial, const char *local);
+
+// Return the result of "adb get-serialno".
+char *
+adb_get_serialno(void);
+
+#endif

app/src/adb_tunnel.c

@@ -0,0 +1,192 @@
+#include "adb_tunnel.h"
+
+#include <assert.h>
+
+#include "adb.h"
+#include "util/log.h"
+#include "util/net_intr.h"
+#include "util/process_intr.h"
+
+#define SC_SOCKET_NAME "scrcpy"
+
+static bool
+enable_tunnel_reverse(struct sc_intr *intr, const char *serial,
+                      uint16_t local_port) {
+    sc_pid pid = adb_reverse(serial, SC_SOCKET_NAME, local_port);
+    return sc_process_check_success_intr(intr, pid, "adb reverse");
+}
+
+static bool
+disable_tunnel_reverse(struct sc_intr *intr, const char *serial) {
+    sc_pid pid = adb_reverse_remove(serial, SC_SOCKET_NAME);
+    return sc_process_check_success_intr(intr, pid, "adb reverse --remove");
+}
+
+static bool
+enable_tunnel_forward(struct sc_intr *intr, const char *serial,
+                      uint16_t local_port) {
+    sc_pid pid = adb_forward(serial, local_port, SC_SOCKET_NAME);
+    return sc_process_check_success_intr(intr, pid, "adb forward");
+}
+
+static bool
+disable_tunnel_forward(struct sc_intr *intr, const char *serial,
+                       uint16_t local_port) {
+    sc_pid pid = adb_forward_remove(serial, local_port);
+    return sc_process_check_success_intr(intr, pid, "adb forward --remove");
+}
+
+static bool
+listen_on_port(struct sc_intr *intr, sc_socket socket, uint16_t port) {
+    return net_listen_intr(intr, socket, IPV4_LOCALHOST, port, 1);
+}
+
+static bool
+enable_tunnel_reverse_any_port(struct sc_adb_tunnel *tunnel,
+                               struct sc_intr *intr, const char *serial,
+                               struct sc_port_range port_range) {
+    uint16_t port = port_range.first;
+    for (;;) {
+        if (!enable_tunnel_reverse(intr, serial, port)) {
+            // the command itself failed, it will fail on any port
+            return false;
+        }
+
+        // At the application level, the device part is "the server" because it
+        // serves video stream and control. However, at the network level, the
+        // client listens and the server connects to the client. That way, the
+        // client can listen before starting the server app, so there is no
+        // need to try to connect until the server socket is listening on the
+        // device.
+        sc_socket server_socket = net_socket();
+        if (server_socket != SC_SOCKET_NONE) {
+            bool ok = listen_on_port(intr, server_socket, port);
+            if (ok) {
+                // success
+                tunnel->server_socket = server_socket;
+                tunnel->local_port = port;
+                tunnel->enabled = true;
+                return true;
+            }
+
+            net_close(server_socket);
+        }
+
+        if (sc_intr_is_interrupted(intr)) {
+            // Stop immediately
+            return false;
+        }
+
+        // failure, disable tunnel and try another port
+        if (!disable_tunnel_reverse(intr, serial)) {
+            LOGW("Could not remove reverse tunnel on port %" PRIu16, port);
+        }
+
+        // check before incrementing to avoid overflow on port 65535
+        if (port < port_range.last) {
+            LOGW("Could not listen on port %" PRIu16", retrying on %" PRIu16,
+                 port, (uint16_t) (port + 1));
+            port++;
+            continue;
+        }
+
+        if (port_range.first == port_range.last) {
+            LOGE("Could not listen on port %" PRIu16, port_range.first);
+        } else {
+            LOGE("Could not listen on any port in range %" PRIu16 ":%" PRIu16,
+                 port_range.first, port_range.last);
+        }
+        return false;
+    }
+}
+
+static bool
+enable_tunnel_forward_any_port(struct sc_adb_tunnel *tunnel,
+                               struct sc_intr *intr, const char *serial,
+                               struct sc_port_range port_range) {
+    tunnel->forward = true;
+
+    uint16_t port = port_range.first;
+    for (;;) {
+        if (enable_tunnel_forward(intr, serial, port)) {
+            // success
+            tunnel->local_port = port;
+            tunnel->enabled = true;
+            return true;
+        }
+
+        if (sc_intr_is_interrupted(intr)) {
+            // Stop immediately
+            return false;
+        }
+
+        if (port < port_range.last) {
+            LOGW("Could not forward port %" PRIu16", retrying on %" PRIu16,
+                 port, (uint16_t) (port + 1));
+            port++;
+            continue;
+        }
+
+        if (port_range.first == port_range.last) {
+            LOGE("Could not forward port %" PRIu16, port_range.first);
+        } else {
+            LOGE("Could not forward any port in range %" PRIu16 ":%" PRIu16,
+                 port_range.first, port_range.last);
+        }
+        return false;
+    }
+}
+
+void
+sc_adb_tunnel_init(struct sc_adb_tunnel *tunnel) {
+    tunnel->enabled = false;
+    tunnel->forward = false;
+    tunnel->server_socket = SC_SOCKET_NONE;
+    tunnel->local_port = 0;
+}
+
+bool
+sc_adb_tunnel_open(struct sc_adb_tunnel *tunnel, struct sc_intr *intr,
+                   const char *serial, struct sc_port_range port_range,
+                   bool force_adb_forward) {
+    assert(!tunnel->enabled);
+
+    if (!force_adb_forward) {
+        // Attempt to use "adb reverse"
+        if (enable_tunnel_reverse_any_port(tunnel, intr, serial, port_range)) {
+            return true;
+        }
+
+        // if "adb reverse" does not work (e.g. over "adb connect"), it
+        // fallbacks to "adb forward", so the app socket is the client
+
+        LOGW("'adb reverse' failed, fallback to 'adb forward'");
+    }
+
+    return enable_tunnel_forward_any_port(tunnel, intr, serial, port_range);
+}
+
+bool
+sc_adb_tunnel_close(struct sc_adb_tunnel *tunnel, struct sc_intr *intr,
+                    const char *serial) {
+    assert(tunnel->enabled);
+
+    bool ret;
+    if (tunnel->forward) {
+        ret = disable_tunnel_forward(intr, serial, tunnel->local_port);
+    } else {
+        ret = disable_tunnel_reverse(intr, serial);
+
+        assert(tunnel->server_socket != SC_SOCKET_NONE);
+        if (!net_close(tunnel->server_socket)) {
+            LOGW("Could not close server socket");
+        }
+
+        // server_socket is never used anymore
+    }
+
+    // Consider tunnel disabled even if the command failed
+    tunnel->enabled = false;
+
+    return ret;
+}

app/src/adb_tunnel.h

@@ -0,0 +1,47 @@
+#ifndef SC_ADB_TUNNEL_H
+#define SC_ADB_TUNNEL_H
+
+#include "common.h"
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "options.h"
+#include "util/intr.h"
+#include "util/net.h"
+
+struct sc_adb_tunnel {
+    bool enabled;
+    bool forward; // use "adb forward" instead of "adb reverse"
+    sc_socket server_socket; // only used if !forward
+    uint16_t local_port;
+};
+
+/**
+ * Initialize the adb tunnel struct to default values
+ */
+void
+sc_adb_tunnel_init(struct sc_adb_tunnel *tunnel);
+
+/**
+ * Open a tunnel
+ *
+ * Blocking calls may be interrupted asynchronously via `intr`.
+ *
+ * If `force_adb_forward` is not set, then attempts to set up an "adb reverse"
+ * tunnel first. Only if it fails (typical on old Android version connected via
+ * TCP/IP), use "adb forward".
+ */
+bool
+sc_adb_tunnel_open(struct sc_adb_tunnel *tunnel, struct sc_intr *intr,
+                   const char *serial, struct sc_port_range port_range,
+                   bool force_adb_forward);
+
+/**
+ * Close the tunnel
+ */
+bool
+sc_adb_tunnel_close(struct sc_adb_tunnel *tunnel, struct sc_intr *intr,
+                    const char *serial);
+
+#endif

app/src/android/input.h

@@ -21,7 +21,7 @@
 #define _ANDROID_INPUT_H
 
 /**
- * Meta key / modifer state.
+ * Meta key / modifier state.
  */
 enum android_metastate {
     /** No meta keys are pressed. */

app/src/aoa_hid.c

@@ -0,0 +1,385 @@
+#include "util/log.h"
+
+#include <assert.h>
+#include <stdio.h>
+
+#include "aoa_hid.h"
+
+// See <https://source.android.com/devices/accessories/aoa2#hid-support>.
+#define ACCESSORY_REGISTER_HID 54
+#define ACCESSORY_SET_HID_REPORT_DESC 56
+#define ACCESSORY_SEND_HID_EVENT 57
+#define ACCESSORY_UNREGISTER_HID 55
+
+#define DEFAULT_TIMEOUT 1000
+
+static void
+sc_hid_event_log(const struct sc_hid_event *event) {
+    // HID Event: [00] FF FF FF FF...
+    assert(event->size);
+    unsigned buffer_size = event->size * 3 + 1;
+    char *buffer = malloc(buffer_size);
+    if (!buffer) {
+        return;
+    }
+    for (unsigned i = 0; i < event->size; ++i) {
+        snprintf(buffer + i * 3, 4, " %02x", event->buffer[i]);
+    }
+    LOGV("HID Event: [%d]%s", event->accessory_id, buffer);
+    free(buffer);
+}
+
+void
+sc_hid_event_init(struct sc_hid_event *hid_event, uint16_t accessory_id,
+                  unsigned char *buffer, uint16_t buffer_size) {
+    hid_event->accessory_id = accessory_id;
+    hid_event->buffer = buffer;
+    hid_event->size = buffer_size;
+    hid_event->delay = 0;
+}
+
+void
+sc_hid_event_destroy(struct sc_hid_event *hid_event) {
+    free(hid_event->buffer);
+}
+
+static inline void
+log_libusb_error(enum libusb_error errcode) {
+    LOGW("libusb error: %s", libusb_strerror(errcode));
+}
+
+static bool
+accept_device(libusb_device *device, const char *serial) {
+    // do not log any USB error in this function, it is expected that many USB
+    // devices available on the computer have permission restrictions
+
+    struct libusb_device_descriptor desc;
+    libusb_get_device_descriptor(device, &desc);
+
+    if (!desc.iSerialNumber) {
+        return false;
+    }
+
+    libusb_device_handle *handle;
+    int result = libusb_open(device, &handle);
+    if (result < 0) {
+        return false;
+    }
+
+    char buffer[128];
+    result = libusb_get_string_descriptor_ascii(handle, desc.iSerialNumber,
+                                                (unsigned char *) buffer,
+                                                sizeof(buffer));
+    libusb_close(handle);
+    if (result < 0) {
+        return false;
+    }
+
+    buffer[sizeof(buffer) - 1] = '\0'; // just in case
+
+    // accept the device if its serial matches
+    return !strcmp(buffer, serial);
+}
+
+static libusb_device *
+sc_aoa_find_usb_device(const char *serial) {
+    if (!serial) {
+        return NULL;
+    }
+
+    libusb_device **list;
+    libusb_device *result = NULL;
+    ssize_t count = libusb_get_device_list(NULL, &list);
+    if (count < 0) {
+        log_libusb_error((enum libusb_error) count);
+        return NULL;
+    }
+
+    for (size_t i = 0; i < (size_t) count; ++i) {
+        libusb_device *device = list[i];
+
+        if (accept_device(device, serial)) {
+            result = libusb_ref_device(device);
+            break;
+        }
+    }
+    libusb_free_device_list(list, 1);
+    return result;
+}
+
+static int
+sc_aoa_open_usb_handle(libusb_device *device, libusb_device_handle **handle) {
+    int result = libusb_open(device, handle);
+    if (result < 0) {
+        log_libusb_error((enum libusb_error) result);
+        return result;
+    }
+    return 0;
+}
+
+bool
+sc_aoa_init(struct sc_aoa *aoa, const char *serial) {
+    cbuf_init(&aoa->queue);
+
+    if (!sc_mutex_init(&aoa->mutex)) {
+        return false;
+    }
+
+    if (!sc_cond_init(&aoa->event_cond)) {
+        sc_mutex_destroy(&aoa->mutex);
+        return false;
+    }
+
+    if (libusb_init(&aoa->usb_context) != LIBUSB_SUCCESS) {
+        sc_cond_destroy(&aoa->event_cond);
+        sc_mutex_destroy(&aoa->mutex);
+        return false;
+    }
+
+    aoa->usb_device = sc_aoa_find_usb_device(serial);
+    if (!aoa->usb_device) {
+        LOGW("USB device of serial %s not found", serial);
+        libusb_exit(aoa->usb_context);
+        sc_mutex_destroy(&aoa->mutex);
+        sc_cond_destroy(&aoa->event_cond);
+        return false;
+    }
+
+    if (sc_aoa_open_usb_handle(aoa->usb_device, &aoa->usb_handle) < 0) {
+        LOGW("Open USB handle failed");
+        libusb_unref_device(aoa->usb_device);
+        libusb_exit(aoa->usb_context);
+        sc_cond_destroy(&aoa->event_cond);
+        sc_mutex_destroy(&aoa->mutex);
+        return false;
+    }
+
+    aoa->stopped = false;
+
+    return true;
+}
+
+void
+sc_aoa_destroy(struct sc_aoa *aoa) {
+    // Destroy remaining events
+    struct sc_hid_event event;
+    while (cbuf_take(&aoa->queue, &event)) {
+        sc_hid_event_destroy(&event);
+    }
+
+    libusb_close(aoa->usb_handle);
+    libusb_unref_device(aoa->usb_device);
+    libusb_exit(aoa->usb_context);
+    sc_cond_destroy(&aoa->event_cond);
+    sc_mutex_destroy(&aoa->mutex);
+}
+
+static bool
+sc_aoa_register_hid(struct sc_aoa *aoa, uint16_t accessory_id,
+                    uint16_t report_desc_size) {
+    uint8_t request_type = LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR;
+    uint8_t request = ACCESSORY_REGISTER_HID;
+    // <https://source.android.com/devices/accessories/aoa2.html#hid-support>
+    // value (arg0): accessory assigned ID for the HID device
+    // index (arg1): total length of the HID report descriptor
+    uint16_t value = accessory_id;
+    uint16_t index = report_desc_size;
+    unsigned char *buffer = NULL;
+    uint16_t length = 0;
+    int result = libusb_control_transfer(aoa->usb_handle, request_type, request,
+                                         value, index, buffer, length,
+                                         DEFAULT_TIMEOUT);
+    if (result < 0) {
+        log_libusb_error((enum libusb_error) result);
+        return false;
+    }
+
+    return true;
+}
+
+static bool
+sc_aoa_set_hid_report_desc(struct sc_aoa *aoa, uint16_t accessory_id,
+                           const unsigned char *report_desc,
+                           uint16_t report_desc_size) {
+    uint8_t request_type = LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR;
+    uint8_t request = ACCESSORY_SET_HID_REPORT_DESC;
+    /**
+     * If the HID descriptor is longer than the endpoint zero max packet size,
+     * the descriptor will be sent in multiple ACCESSORY_SET_HID_REPORT_DESC
+     * commands. The data for the descriptor must be sent sequentially
+     * if multiple packets are needed.
+     * <https://source.android.com/devices/accessories/aoa2.html#hid-support>
+     *
+     * libusb handles packet abstraction internally, so we don't need to care
+     * about bMaxPacketSize0 here.
+     *
+     * See <https://libusb.sourceforge.io/api-1.0/libusb_packetoverflow.html>
+     */
+    // value (arg0): accessory assigned ID for the HID device
+    // index (arg1): offset of data (buffer) in descriptor
+    uint16_t value = accessory_id;
+    uint16_t index = 0;
+    // libusb_control_transfer expects a pointer to non-const
+    unsigned char *buffer = (unsigned char *) report_desc;
+    uint16_t length = report_desc_size;
+    int result = libusb_control_transfer(aoa->usb_handle, request_type, request,
+                                         value, index, buffer, length,
+                                         DEFAULT_TIMEOUT);
+    if (result < 0) {
+        log_libusb_error((enum libusb_error) result);
+        return false;
+    }
+
+    return true;
+}
+
+bool
+sc_aoa_setup_hid(struct sc_aoa *aoa, uint16_t accessory_id,
+                 const unsigned char *report_desc, uint16_t report_desc_size) {
+    bool ok = sc_aoa_register_hid(aoa, accessory_id, report_desc_size);
+    if (!ok) {
+        return false;
+    }
+
+    ok = sc_aoa_set_hid_report_desc(aoa, accessory_id, report_desc,
+                                    report_desc_size);
+    if (!ok) {
+        if (!sc_aoa_unregister_hid(aoa, accessory_id)) {
+            LOGW("Could not unregister HID");
+        }
+        return false;
+    }
+
+    return true;
+}
+
+static bool
+sc_aoa_send_hid_event(struct sc_aoa *aoa, const struct sc_hid_event *event) {
+    uint8_t request_type = LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR;
+    uint8_t request = ACCESSORY_SEND_HID_EVENT;
+    // <https://source.android.com/devices/accessories/aoa2.html#hid-support>
+    // value (arg0): accessory assigned ID for the HID device
+    // index (arg1): 0 (unused)
+    uint16_t value = event->accessory_id;
+    uint16_t index = 0;
+    unsigned char *buffer = event->buffer;
+    uint16_t length = event->size;
+    int result = libusb_control_transfer(aoa->usb_handle, request_type, request,
+                                         value, index, buffer, length,
+                                         DEFAULT_TIMEOUT);
+    if (result < 0) {
+        log_libusb_error((enum libusb_error) result);
+        return false;
+    }
+
+    return true;
+}
+
+bool
+sc_aoa_unregister_hid(struct sc_aoa *aoa, const uint16_t accessory_id) {
+    uint8_t request_type = LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR;
+    uint8_t request = ACCESSORY_UNREGISTER_HID;
+    // <https://source.android.com/devices/accessories/aoa2.html#hid-support>
+    // value (arg0): accessory assigned ID for the HID device
+    // index (arg1): 0
+    uint16_t value = accessory_id;
+    uint16_t index = 0;
+    unsigned char *buffer = NULL;
+    uint16_t length = 0;
+    int result = libusb_control_transfer(aoa->usb_handle, request_type, request,
+                                         value, index, buffer, length,
+                                         DEFAULT_TIMEOUT);
+    if (result < 0) {
+        log_libusb_error((enum libusb_error) result);
+        return false;
+    }
+
+    return true;
+}
+
+bool
+sc_aoa_push_hid_event(struct sc_aoa *aoa, const struct sc_hid_event *event) {
+    if (sc_get_log_level() <= SC_LOG_LEVEL_VERBOSE) {
+        sc_hid_event_log(event);
+    }
+
+    sc_mutex_lock(&aoa->mutex);
+    bool was_empty = cbuf_is_empty(&aoa->queue);
+    bool res = cbuf_push(&aoa->queue, *event);
+    if (was_empty) {
+        sc_cond_signal(&aoa->event_cond);
+    }
+    sc_mutex_unlock(&aoa->mutex);
+    return res;
+}
+
+static int
+run_aoa_thread(void *data) {
+    struct sc_aoa *aoa = data;
+
+    for (;;) {
+        sc_mutex_lock(&aoa->mutex);
+        while (!aoa->stopped && cbuf_is_empty(&aoa->queue)) {
+            sc_cond_wait(&aoa->event_cond, &aoa->mutex);
+        }
+        if (aoa->stopped) {
+            // Stop immediately, do not process further events
+            sc_mutex_unlock(&aoa->mutex);
+            break;
+        }
+        struct sc_hid_event event;
+        bool non_empty = cbuf_take(&aoa->queue, &event);
+        assert(non_empty);
+        (void) non_empty;
+
+        assert(event.delay >= 0);
+        if (event.delay) {
+            // Wait during the specified delay before injecting the HID event
+            sc_tick deadline = sc_tick_now() + event.delay;
+            bool timed_out = false;
+            while (!aoa->stopped && !timed_out) {
+                timed_out = !sc_cond_timedwait(&aoa->event_cond, &aoa->mutex,
+                                               deadline);
+            }
+            if (aoa->stopped) {
+                sc_mutex_unlock(&aoa->mutex);
+                break;
+            }
+        }
+
+        sc_mutex_unlock(&aoa->mutex);
+
+        bool ok = sc_aoa_send_hid_event(aoa, &event);
+        sc_hid_event_destroy(&event);
+        if (!ok) {
+            LOGW("Could not send HID event to USB device");
+        }
+    }
+    return 0;
+}
+
+bool
+sc_aoa_start(struct sc_aoa *aoa) {
+    LOGD("Starting AOA thread");
+
+    bool ok = sc_thread_create(&aoa->thread, run_aoa_thread, "aoa_thread", aoa);
+    if (!ok) {
+        LOGC("Could not start AOA thread");
+        return false;
+    }
+
+    return true;
+}
+
+void
+sc_aoa_stop(struct sc_aoa *aoa) {
+    sc_mutex_lock(&aoa->mutex);
+    aoa->stopped = true;
+    sc_cond_signal(&aoa->event_cond);
+    sc_mutex_unlock(&aoa->mutex);
+}
+
+void
+sc_aoa_join(struct sc_aoa *aoa) {
+    sc_thread_join(&aoa->thread, NULL);
+}

app/src/aoa_hid.h

@@ -0,0 +1,66 @@
+#ifndef SC_AOA_HID_H
+#define SC_AOA_HID_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <libusb-1.0/libusb.h>
+
+#include "util/cbuf.h"
+#include "util/thread.h"
+#include "util/tick.h"
+
+struct sc_hid_event {
+    uint16_t accessory_id;
+    unsigned char *buffer;
+    uint16_t size;
+    sc_tick delay;
+};
+
+// Takes ownership of buffer
+void
+sc_hid_event_init(struct sc_hid_event *hid_event, uint16_t accessory_id,
+                  unsigned char *buffer, uint16_t buffer_size);
+
+void
+sc_hid_event_destroy(struct sc_hid_event *hid_event);
+
+struct sc_hid_event_queue CBUF(struct sc_hid_event, 64);
+
+struct sc_aoa {
+    libusb_context *usb_context;
+    libusb_device *usb_device;
+    libusb_device_handle *usb_handle;
+    sc_thread thread;
+    sc_mutex mutex;
+    sc_cond event_cond;
+    bool stopped;
+    struct sc_hid_event_queue queue;
+};
+
+bool
+sc_aoa_init(struct sc_aoa *aoa, const char *serial);
+
+void
+sc_aoa_destroy(struct sc_aoa *aoa);
+
+bool
+sc_aoa_start(struct sc_aoa *aoa);
+
+void
+sc_aoa_stop(struct sc_aoa *aoa);
+
+void
+sc_aoa_join(struct sc_aoa *aoa);
+
+bool
+sc_aoa_setup_hid(struct sc_aoa *aoa, uint16_t accessory_id,
+              const unsigned char *report_desc, uint16_t report_desc_size);
+
+bool
+sc_aoa_unregister_hid(struct sc_aoa *aoa, uint16_t accessory_id);
+
+bool
+sc_aoa_push_hid_event(struct sc_aoa *aoa, const struct sc_hid_event *event);
+
+#endif

app/src/cli.h

@@ -1,10 +1,11 @@
 #ifndef SCRCPY_CLI_H
 #define SCRCPY_CLI_H
 
+#include "common.h"
+
 #include <stdbool.h>
 
-#include "config.h"
-#include "scrcpy.h"
+#include "options.h"
 
 struct scrcpy_cli_args {
     struct scrcpy_options opts;

app/src/clock.c

@@ -0,0 +1,111 @@
+#include "clock.h"
+
+#include "util/log.h"
+
+#define SC_CLOCK_NDEBUG // comment to debug
+
+void
+sc_clock_init(struct sc_clock *clock) {
+    clock->count = 0;
+    clock->head = 0;
+    clock->left_sum.system = 0;
+    clock->left_sum.stream = 0;
+    clock->right_sum.system = 0;
+    clock->right_sum.stream = 0;
+}
+
+// Estimate the affine function f(stream) = slope * stream + offset
+static void
+sc_clock_estimate(struct sc_clock *clock,
+                  double *out_slope, sc_tick *out_offset) {
+    assert(clock->count > 1); // two points are necessary
+
+    struct sc_clock_point left_avg = {
+        .system = clock->left_sum.system / (clock->count / 2),
+        .stream = clock->left_sum.stream / (clock->count / 2),
+    };
+    struct sc_clock_point right_avg = {
+        .system = clock->right_sum.system / ((clock->count + 1) / 2),
+        .stream = clock->right_sum.stream / ((clock->count + 1) / 2),
+    };
+
+    double slope = (double) (right_avg.system - left_avg.system)
+                 / (right_avg.stream - left_avg.stream);
+
+    if (clock->count < SC_CLOCK_RANGE) {
+        /* The first frames are typically received and decoded with more delay
+         * than the others, causing a wrong slope estimation on start. To
+         * compensate, assume an initial slope of 1, then progressively use the
+         * estimated slope. */
+        slope = (clock->count * slope + (SC_CLOCK_RANGE - clock->count))
+              / SC_CLOCK_RANGE;
+    }
+
+    struct sc_clock_point global_avg = {
+        .system = (clock->left_sum.system + clock->right_sum.system)
+                 / clock->count,
+        .stream = (clock->left_sum.stream + clock->right_sum.stream)
+                 / clock->count,
+    };
+
+    sc_tick offset = global_avg.system - (sc_tick) (global_avg.stream * slope);
+
+    *out_slope = slope;
+    *out_offset = offset;
+}
+
+void
+sc_clock_update(struct sc_clock *clock, sc_tick system, sc_tick stream) {
+    struct sc_clock_point *point = &clock->points[clock->head];
+
+    if (clock->count == SC_CLOCK_RANGE || clock->count & 1) {
+        // One point passes from the right sum to the left sum
+
+        unsigned mid;
+        if (clock->count == SC_CLOCK_RANGE) {
+            mid = (clock->head + SC_CLOCK_RANGE / 2) % SC_CLOCK_RANGE;
+        } else {
+            // Only for the first frames
+            mid = clock->count / 2;
+        }
+
+        struct sc_clock_point *mid_point = &clock->points[mid];
+        clock->left_sum.system += mid_point->system;
+        clock->left_sum.stream += mid_point->stream;
+        clock->right_sum.system -= mid_point->system;
+        clock->right_sum.stream -= mid_point->stream;
+    }
+
+    if (clock->count == SC_CLOCK_RANGE) {
+        // The current point overwrites the previous value in the circular
+        // array, update the left sum accordingly
+        clock->left_sum.system -= point->system;
+        clock->left_sum.stream -= point->stream;
+    } else {
+        ++clock->count;
+    }
+
+    point->system = system;
+    point->stream = stream;
+
+    clock->right_sum.system += system;
+    clock->right_sum.stream += stream;
+
+    clock->head = (clock->head + 1) % SC_CLOCK_RANGE;
+
+    if (clock->count > 1) {
+        // Update estimation
+        sc_clock_estimate(clock, &clock->slope, &clock->offset);
+
+#ifndef SC_CLOCK_NDEBUG
+        LOGD("Clock estimation: %g * pts + %" PRItick,
+             clock->slope, clock->offset);
+#endif
+    }
+}
+
+sc_tick
+sc_clock_to_system_time(struct sc_clock *clock, sc_tick stream) {
+    assert(clock->count > 1); // sc_clock_update() must have been called
+    return (sc_tick) (stream * clock->slope) + clock->offset;
+}

app/src/clock.h

@@ -0,0 +1,70 @@
+#ifndef SC_CLOCK_H
+#define SC_CLOCK_H
+
+#include "common.h"
+
+#include <assert.h>
+
+#include "util/tick.h"
+
+#define SC_CLOCK_RANGE 32
+static_assert(!(SC_CLOCK_RANGE & 1), "SC_CLOCK_RANGE must be even");
+
+struct sc_clock_point {
+    sc_tick system;
+    sc_tick stream;
+};
+
+/**
+ * The clock aims to estimate the affine relation between the stream (device)
+ * time and the system time:
+ *
+ *     f(stream) = slope * stream + offset
+ *
+ * To that end, it stores the SC_CLOCK_RANGE last clock points (the timestamps
+ * of a frame expressed both in stream time and system time) in a circular
+ * array.
+ *
+ * To estimate the slope, it splits the last SC_CLOCK_RANGE points into two
+ * sets of SC_CLOCK_RANGE/2 points, and computes their centroid ("average
+ * point"). The slope of the estimated affine function is that of the line
+ * passing through these two points.
+ *
+ * To estimate the offset, it computes the centroid of all the SC_CLOCK_RANGE
+ * points. The resulting affine function passes by this centroid.
+ *
+ * With a circular array, the rolling sums (and average) are quick to compute.
+ * In practice, the estimation is stable and the evolution is smooth.
+ */
+struct sc_clock {
+    // Circular array
+    struct sc_clock_point points[SC_CLOCK_RANGE];
+
+    // Number of points in the array (count <= SC_CLOCK_RANGE)
+    unsigned count;
+
+    // Index of the next point to write
+    unsigned head;
+
+    // Sum of the first count/2 points
+    struct sc_clock_point left_sum;
+
+    // Sum of the last (count+1)/2 points
+    struct sc_clock_point right_sum;
+
+    // Estimated slope and offset
+    // (computed on sc_clock_update(), used by sc_clock_to_system_time())
+    double slope;
+    sc_tick offset;
+};
+
+void
+sc_clock_init(struct sc_clock *clock);
+
+void
+sc_clock_update(struct sc_clock *clock, sc_tick system, sc_tick stream);
+
+sc_tick
+sc_clock_to_system_time(struct sc_clock *clock, sc_tick stream);
+
+#endif

app/src/command.h

@@ -1,93 +0,0 @@
-#ifndef COMMAND_H
-#define COMMAND_H
-
-#include <stdbool.h>
-#include <inttypes.h>
-
-#ifdef _WIN32
-
- // not needed here, but winsock2.h must never be included AFTER windows.h
-# include <winsock2.h>
-# include <windows.h>
-# define PATH_SEPARATOR '\\'
-# define PRIexitcode "lu"
-// <https://stackoverflow.com/a/44383330/1987178>
-# define PRIsizet "Iu"
-# define PROCESS_NONE NULL
-# define NO_EXIT_CODE -1u // max value as unsigned
-  typedef HANDLE process_t;
-  typedef DWORD exit_code_t;
-
-#else
-
-# include <sys/types.h>
-# define PATH_SEPARATOR '/'
-# define PRIsizet "zu"
-# define PRIexitcode "d"
-# define PROCESS_NONE -1
-# define NO_EXIT_CODE -1
-  typedef pid_t process_t;
-  typedef int exit_code_t;
-
-#endif
-
-#include "config.h"
-
-enum process_result {
-    PROCESS_SUCCESS,
-    PROCESS_ERROR_GENERIC,
-    PROCESS_ERROR_MISSING_BINARY,
-};
-
-#ifndef __WINDOWS__
-bool
-cmd_search(const char *file);
-#endif
-
-enum process_result
-cmd_execute(const char *const argv[], process_t *process);
-
-bool
-cmd_terminate(process_t pid);
-
-bool
-cmd_simple_wait(process_t pid, exit_code_t *exit_code);
-
-process_t
-adb_execute(const char *serial, const char *const adb_cmd[], size_t len);
-
-process_t
-adb_forward(const char *serial, uint16_t local_port,
-            const char *device_socket_name);
-
-process_t
-adb_forward_remove(const char *serial, uint16_t local_port);
-
-process_t
-adb_reverse(const char *serial, const char *device_socket_name,
-            uint16_t local_port);
-
-process_t
-adb_reverse_remove(const char *serial, const char *device_socket_name);
-
-process_t
-adb_push(const char *serial, const char *local, const char *remote);
-
-process_t
-adb_install(const char *serial, const char *local);
-
-// convenience function to wait for a successful process execution
-// automatically log process errors with the provided process name
-bool
-process_check_success(process_t proc, const char *name);
-
-// return the absolute path of the executable (the scrcpy binary)
-// may be NULL on error; to be freed by SDL_free
-char *
-get_executable_path(void);
-
-// returns true if the file exists and is not a directory
-bool
-is_regular_file(const char *path);
-
-#endif

app/src/common.h

@@ -1,35 +1,14 @@
 #ifndef COMMON_H
 #define COMMON_H
 
-#include <stdint.h>
-
 #include "config.h"
+#include "compat.h"
 
 #define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
 #define MIN(X,Y) (X) < (Y) ? (X) : (Y)
 #define MAX(X,Y) (X) > (Y) ? (X) : (Y)
 
-struct size {
-    uint16_t width;
-    uint16_t height;
-};
-
-struct point {
-    int32_t x;
-    int32_t y;
-};
-
-struct position {
-    // The video screen size may be different from the real device screen size,
-    // so store to which size the absolute position apply, to scale it
-    // accordingly.
-    struct size screen_size;
-    struct point point;
-};
-
-struct port_range {
-    uint16_t first;
-    uint16_t last;
-};
+#define container_of(ptr, type, member) \
+    ((type *) (((char *) (ptr)) - offsetof(type, member)))
 
 #endif

app/src/compat.c

@@ -0,0 +1,14 @@
+#include "compat.h"
+
+#include "config.h"
+
+#ifndef HAVE_STRDUP
+char *strdup(const char *s) {
+    size_t size = strlen(s) + 1;
+    char *dup = malloc(size);
+    if (dup) {
+        memcpy(dup, s, size);
+    }
+    return dup;
+}
+#endif

app/src/compat.h

@@ -1,19 +1,16 @@
 #ifndef COMPAT_H
 #define COMPAT_H
 
+#define _POSIX_C_SOURCE 200809L
+#define _XOPEN_SOURCE 700
+#define _GNU_SOURCE
+#ifdef __APPLE__
+# define _DARWIN_C_SOURCE
+#endif
+
 #include <libavformat/version.h>
 #include <SDL2/SDL_version.h>
 
-// In ffmpeg/doc/APIchanges:
-// 2016-04-11 - 6f69f7a / 9200514 - lavf 57.33.100 / 57.5.0 - avformat.h
-//   Add AVStream.codecpar, deprecate AVStream.codec.
-#if    (LIBAVFORMAT_VERSION_MICRO >= 100 /* FFmpeg */ && \
-        LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 33, 100)) \
-    || (LIBAVFORMAT_VERSION_MICRO < 100 && /* Libav */ \
-        LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 5, 0))
-# define SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
-#endif
-
 // In ffmpeg/doc/APIchanges:
 // 2018-02-06 - 0694d87024 - lavf 58.9.100 - avformat.h
 //   Deprecate use of av_register_input_format(), av_register_output_format(),
@@ -25,13 +22,16 @@
 # define SCRCPY_LAVF_REQUIRES_REGISTER_ALL
 #endif
 
+
 // In ffmpeg/doc/APIchanges:
-// 2016-04-21 - 7fc329e - lavc 57.37.100 - avcodec.h
-//   Add a new audio/video encoding and decoding API with decoupled input
-//   and output -- avcodec_send_packet(), avcodec_receive_frame(),
-//   avcodec_send_frame() and avcodec_receive_packet().
-#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 37, 100)
-# define SCRCPY_LAVF_HAS_NEW_ENCODING_DECODING_API
+// 2018-01-28 - ea3672b7d6 - lavf 58.7.100 - avformat.h
+//   Deprecate AVFormatContext filename field which had limited length, use the
+//   new dynamically allocated url field instead.
+//
+// 2018-01-28 - ea3672b7d6 - lavf 58.7.100 - avformat.h
+//   Add url field to AVFormatContext and add ff_format_set_url helper function.
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(58, 7, 100)
+# define SCRCPY_LAVF_HAS_AVFORMATCONTEXT_URL
 #endif
 
 #if SDL_VERSION_ATLEAST(2, 0, 5)
@@ -43,9 +43,18 @@
 # define SCRCPY_SDL_HAS_WINDOW_ALWAYS_ON_TOP
 #endif
 
+#if SDL_VERSION_ATLEAST(2, 0, 6)
+// <https://github.com/libsdl-org/SDL/commit/d7a318de563125e5bb465b1000d6bc9576fbc6fc>
+# define SCRCPY_SDL_HAS_HINT_TOUCH_MOUSE_EVENTS
+#endif
+
 #if SDL_VERSION_ATLEAST(2, 0, 8)
 // <https://hg.libsdl.org/SDL/rev/dfde5d3f9781>
 # define SCRCPY_SDL_HAS_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR
 #endif
 
+#ifndef HAVE_STRDUP
+char *strdup(const char *s);
+#endif
+
 #endif

app/src/control_msg.c

@@ -1,15 +1,62 @@
 #include "control_msg.h"
 
 #include <assert.h>
+#include <inttypes.h>
+#include <stdlib.h>
 #include <string.h>
 
-#include "config.h"
 #include "util/buffer_util.h"
 #include "util/log.h"
-#include "util/str_util.h"
+#include "util/str.h"
+
+/**
+ * Map an enum value to a string based on an array, without crashing on an
+ * out-of-bounds index.
+ */
+#define ENUM_TO_LABEL(labels, value) \
+    ((size_t) (value) < ARRAY_LEN(labels) ? labels[value] : "???")
+
+#define KEYEVENT_ACTION_LABEL(value) \
+    ENUM_TO_LABEL(android_keyevent_action_labels, value)
+
+#define MOTIONEVENT_ACTION_LABEL(value) \
+    ENUM_TO_LABEL(android_motionevent_action_labels, value)
+
+#define SCREEN_POWER_MODE_LABEL(value) \
+    ENUM_TO_LABEL(screen_power_mode_labels, value)
+
+static const char *const android_keyevent_action_labels[] = {
+    "down",
+    "up",
+    "multi",
+};
+
+static const char *const android_motionevent_action_labels[] = {
+    "down",
+    "up",
+    "move",
+    "cancel",
+    "outside",
+    "ponter-down",
+    "pointer-up",
+    "hover-move",
+    "scroll",
+    "hover-enter"
+    "hover-exit",
+    "btn-press",
+    "btn-release",
+};
+
+static const char *const screen_power_mode_labels[] = {
+    "off",
+    "doze",
+    "normal",
+    "doze-suspend",
+    "suspend",
+};
 
 static void
-write_position(uint8_t *buf, const struct position *position) {
+write_position(uint8_t *buf, const struct sc_position *position) {
     buffer_write32be(&buf[0], position->point.x);
     buffer_write32be(&buf[4], position->point.y);
     buffer_write16be(&buf[8], position->screen_size.width);
@@ -19,7 +66,7 @@ write_position(uint8_t *buf, const struct position *position) {
 // write length (2 bytes) + string (non nul-terminated)
 static size_t
 write_string(const char *utf8, size_t max_len, unsigned char *buf) {
-    size_t len = utf8_truncation_index(utf8, max_len);
+    size_t len = sc_str_utf8_truncation_index(utf8, max_len);
     buffer_write32be(buf, len);
     memcpy(&buf[4], utf8, len);
     return 4 + len;
@@ -67,6 +114,9 @@ control_msg_serialize(const struct control_msg *msg, unsigned char *buf) {
             buffer_write32be(&buf[17],
                              (uint32_t) msg->inject_scroll_event.vscroll);
             return 21;
+        case CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
+            buf[1] = msg->inject_keycode.action;
+            return 2;
         case CONTROL_MSG_TYPE_SET_CLIPBOARD: {
             buf[1] = !!msg->set_clipboard.paste;
             size_t len = write_string(msg->set_clipboard.text,
@@ -77,9 +127,9 @@ control_msg_serialize(const struct control_msg *msg, unsigned char *buf) {
         case CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE:
             buf[1] = msg->set_screen_power_mode.mode;
             return 2;
-        case CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
         case CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL:
-        case CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL:
+        case CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL:
+        case CONTROL_MSG_TYPE_COLLAPSE_PANELS:
         case CONTROL_MSG_TYPE_GET_CLIPBOARD:
         case CONTROL_MSG_TYPE_ROTATE_DEVICE:
             // no additional data
@@ -90,14 +140,102 @@ control_msg_serialize(const struct control_msg *msg, unsigned char *buf) {
     }
 }
 
+void
+control_msg_log(const struct control_msg *msg) {
+#define LOG_CMSG(fmt, ...) LOGV("input: " fmt, ## __VA_ARGS__)
+    switch (msg->type) {
+        case CONTROL_MSG_TYPE_INJECT_KEYCODE:
+            LOG_CMSG("key %-4s code=%d repeat=%" PRIu32 " meta=%06lx",
+                     KEYEVENT_ACTION_LABEL(msg->inject_keycode.action),
+                     (int) msg->inject_keycode.keycode,
+                     msg->inject_keycode.repeat,
+                     (long) msg->inject_keycode.metastate);
+            break;
+        case CONTROL_MSG_TYPE_INJECT_TEXT:
+            LOG_CMSG("text \"%s\"", msg->inject_text.text);
+            break;
+        case CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT: {
+            int action = msg->inject_touch_event.action
+                       & AMOTION_EVENT_ACTION_MASK;
+            uint64_t id = msg->inject_touch_event.pointer_id;
+            if (id == POINTER_ID_MOUSE || id == POINTER_ID_VIRTUAL_FINGER) {
+                // string pointer id
+                LOG_CMSG("touch [id=%s] %-4s position=%" PRIi32 ",%" PRIi32
+                             " pressure=%g buttons=%06lx",
+                         id == POINTER_ID_MOUSE ? "mouse" : "vfinger",
+                         MOTIONEVENT_ACTION_LABEL(action),
+                         msg->inject_touch_event.position.point.x,
+                         msg->inject_touch_event.position.point.y,
+                         msg->inject_touch_event.pressure,
+                         (long) msg->inject_touch_event.buttons);
+            } else {
+                // numeric pointer id
+#ifndef __WIN32
+# define PRIu64_ PRIu64
+#else
+# define PRIu64_ "I64u"  // Windows...
+#endif
+                LOG_CMSG("touch [id=%" PRIu64_ "] %-4s position=%" PRIi32 ",%"
+                             PRIi32 " pressure=%g buttons=%06lx",
+                         id,
+                         MOTIONEVENT_ACTION_LABEL(action),
+                         msg->inject_touch_event.position.point.x,
+                         msg->inject_touch_event.position.point.y,
+                         msg->inject_touch_event.pressure,
+                         (long) msg->inject_touch_event.buttons);
+            }
+            break;
+        }
+        case CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT:
+            LOG_CMSG("scroll position=%" PRIi32 ",%" PRIi32 " hscroll=%" PRIi32
+                         " vscroll=%" PRIi32,
+                     msg->inject_scroll_event.position.point.x,
+                     msg->inject_scroll_event.position.point.y,
+                     msg->inject_scroll_event.hscroll,
+                     msg->inject_scroll_event.vscroll);
+            break;
+        case CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
+            LOG_CMSG("back-or-screen-on %s",
+                     KEYEVENT_ACTION_LABEL(msg->inject_keycode.action));
+            break;
+        case CONTROL_MSG_TYPE_SET_CLIPBOARD:
+            LOG_CMSG("clipboard %s \"%s\"",
+                     msg->set_clipboard.paste ? "paste" : "copy",
+                     msg->set_clipboard.text);
+            break;
+        case CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE:
+            LOG_CMSG("power mode %s",
+                     SCREEN_POWER_MODE_LABEL(msg->set_screen_power_mode.mode));
+            break;
+        case CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL:
+            LOG_CMSG("expand notification panel");
+            break;
+        case CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL:
+            LOG_CMSG("expand settings panel");
+            break;
+        case CONTROL_MSG_TYPE_COLLAPSE_PANELS:
+            LOG_CMSG("collapse panels");
+            break;
+        case CONTROL_MSG_TYPE_GET_CLIPBOARD:
+            LOG_CMSG("get clipboard");
+            break;
+        case CONTROL_MSG_TYPE_ROTATE_DEVICE:
+            LOG_CMSG("rotate device");
+            break;
+        default:
+            LOG_CMSG("unknown type: %u", (unsigned) msg->type);
+            break;
+    }
+}
+
 void
 control_msg_destroy(struct control_msg *msg) {
     switch (msg->type) {
         case CONTROL_MSG_TYPE_INJECT_TEXT:
-            SDL_free(msg->inject_text.text);
+            free(msg->inject_text.text);
             break;
         case CONTROL_MSG_TYPE_SET_CLIPBOARD:
-            SDL_free(msg->set_clipboard.text);
+            free(msg->set_clipboard.text);
             break;
         default:
             // do nothing

app/src/control_msg.h

@@ -1,14 +1,15 @@
 #ifndef CONTROLMSG_H
 #define CONTROLMSG_H
 
+#include "common.h"
+
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
 
-#include "config.h"
 #include "android/input.h"
 #include "android/keycodes.h"
-#include "common.h"
+#include "coords.h"
 
 #define CONTROL_MSG_MAX_SIZE (1 << 18) // 256k
 
@@ -16,8 +17,8 @@
 // type: 1 byte; paste flag: 1 byte; length: 4 bytes
 #define CONTROL_MSG_CLIPBOARD_TEXT_MAX_LENGTH (CONTROL_MSG_MAX_SIZE - 6)
 
-#define POINTER_ID_MOUSE UINT64_C(-1);
-#define POINTER_ID_VIRTUAL_FINGER UINT64_C(-2);
+#define POINTER_ID_MOUSE UINT64_C(-1)
+#define POINTER_ID_VIRTUAL_FINGER UINT64_C(-2)
 
 enum control_msg_type {
     CONTROL_MSG_TYPE_INJECT_KEYCODE,
@@ -26,7 +27,8 @@ enum control_msg_type {
     CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT,
     CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON,
     CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL,
-    CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL,
+    CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL,
+    CONTROL_MSG_TYPE_COLLAPSE_PANELS,
     CONTROL_MSG_TYPE_GET_CLIPBOARD,
     CONTROL_MSG_TYPE_SET_CLIPBOARD,
     CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE,
@@ -49,22 +51,26 @@ struct control_msg {
             enum android_metastate metastate;
         } inject_keycode;
         struct {
-            char *text; // owned, to be freed by SDL_free()
+            char *text; // owned, to be freed by free()
         } inject_text;
         struct {
             enum android_motionevent_action action;
             enum android_motionevent_buttons buttons;
             uint64_t pointer_id;
-            struct position position;
+            struct sc_position position;
             float pressure;
         } inject_touch_event;
         struct {
-            struct position position;
+            struct sc_position position;
             int32_t hscroll;
             int32_t vscroll;
         } inject_scroll_event;
         struct {
-            char *text; // owned, to be freed by SDL_free()
+            enum android_keyevent_action action; // action for the BACK key
+            // screen may only be turned on on ACTION_DOWN
+        } back_or_screen_on;
+        struct {
+            char *text; // owned, to be freed by free()
             bool paste;
         } set_clipboard;
         struct {
@@ -78,6 +84,9 @@ struct control_msg {
 size_t
 control_msg_serialize(const struct control_msg *msg, unsigned char *buf);
 
+void
+control_msg_log(const struct control_msg *msg);
+
 void
 control_msg_destroy(struct control_msg *msg);
 

app/src/controller.c

@@ -2,26 +2,27 @@
 
 #include <assert.h>
 
-#include "config.h"
-#include "util/lock.h"
 #include "util/log.h"
 
 bool
-controller_init(struct controller *controller, socket_t control_socket) {
+controller_init(struct controller *controller, sc_socket control_socket) {
     cbuf_init(&controller->queue);
 
-    if (!receiver_init(&controller->receiver, control_socket)) {
+    bool ok = receiver_init(&controller->receiver, control_socket);
+    if (!ok) {
         return false;
     }
 
-    if (!(controller->mutex = SDL_CreateMutex())) {
+    ok = sc_mutex_init(&controller->mutex);
+    if (!ok) {
         receiver_destroy(&controller->receiver);
         return false;
     }
 
-    if (!(controller->msg_cond = SDL_CreateCond())) {
+    ok = sc_cond_init(&controller->msg_cond);
+    if (!ok) {
         receiver_destroy(&controller->receiver);
-        SDL_DestroyMutex(controller->mutex);
+        sc_mutex_destroy(&controller->mutex);
         return false;
     }
 
@@ -33,8 +34,8 @@ controller_init(struct controller *controller, socket_t control_socket) {
 
 void
 controller_destroy(struct controller *controller) {
-    SDL_DestroyCond(controller->msg_cond);
-    SDL_DestroyMutex(controller->mutex);
+    sc_cond_destroy(&controller->msg_cond);
+    sc_mutex_destroy(&controller->mutex);
 
     struct control_msg msg;
     while (cbuf_take(&controller->queue, &msg)) {
@@ -46,27 +47,31 @@ controller_destroy(struct controller *controller) {
 
 bool
 controller_push_msg(struct controller *controller,
-                      const struct control_msg *msg) {
-    mutex_lock(controller->mutex);
+                    const struct control_msg *msg) {
+    if (sc_get_log_level() <= SC_LOG_LEVEL_VERBOSE) {
+        control_msg_log(msg);
+    }
+
+    sc_mutex_lock(&controller->mutex);
     bool was_empty = cbuf_is_empty(&controller->queue);
     bool res = cbuf_push(&controller->queue, *msg);
     if (was_empty) {
-        cond_signal(controller->msg_cond);
+        sc_cond_signal(&controller->msg_cond);
     }
-    mutex_unlock(controller->mutex);
+    sc_mutex_unlock(&controller->mutex);
     return res;
 }
 
 static bool
-process_msg(struct controller *controller,
-              const struct control_msg *msg) {
+process_msg(struct controller *controller, const struct control_msg *msg) {
     static unsigned char serialized_msg[CONTROL_MSG_MAX_SIZE];
-    int length = control_msg_serialize(msg, serialized_msg);
+    size_t length = control_msg_serialize(msg, serialized_msg);
     if (!length) {
         return false;
     }
-    int w = net_send_all(controller->control_socket, serialized_msg, length);
-    return w == length;
+    ssize_t w =
+        net_send_all(controller->control_socket, serialized_msg, length);
+    return (size_t) w == length;
 }
 
 static int
@@ -74,20 +79,20 @@ run_controller(void *data) {
     struct controller *controller = data;
 
     for (;;) {
-        mutex_lock(controller->mutex);
+        sc_mutex_lock(&controller->mutex);
         while (!controller->stopped && cbuf_is_empty(&controller->queue)) {
-            cond_wait(controller->msg_cond, controller->mutex);
+            sc_cond_wait(&controller->msg_cond, &controller->mutex);
         }
         if (controller->stopped) {
             // stop immediately, do not process further msgs
-            mutex_unlock(controller->mutex);
+            sc_mutex_unlock(&controller->mutex);
             break;
         }
         struct control_msg msg;
         bool non_empty = cbuf_take(&controller->queue, &msg);
         assert(non_empty);
         (void) non_empty;
-        mutex_unlock(controller->mutex);
+        sc_mutex_unlock(&controller->mutex);
 
         bool ok = process_msg(controller, &msg);
         control_msg_destroy(&msg);
@@ -103,16 +108,16 @@ bool
 controller_start(struct controller *controller) {
     LOGD("Starting controller thread");
 
-    controller->thread = SDL_CreateThread(run_controller, "controller",
-                                          controller);
-    if (!controller->thread) {
+    bool ok = sc_thread_create(&controller->thread, run_controller,
+                               "controller", controller);
+    if (!ok) {
         LOGC("Could not start controller thread");
         return false;
     }
 
     if (!receiver_start(&controller->receiver)) {
         controller_stop(controller);
-        SDL_WaitThread(controller->thread, NULL);
+        sc_thread_join(&controller->thread, NULL);
         return false;
     }
 
@@ -121,14 +126,14 @@ controller_start(struct controller *controller) {
 
 void
 controller_stop(struct controller *controller) {
-    mutex_lock(controller->mutex);
+    sc_mutex_lock(&controller->mutex);
     controller->stopped = true;
-    cond_signal(controller->msg_cond);
-    mutex_unlock(controller->mutex);
+    sc_cond_signal(&controller->msg_cond);
+    sc_mutex_unlock(&controller->mutex);
 }
 
 void
 controller_join(struct controller *controller) {
-    SDL_WaitThread(controller->thread, NULL);
+    sc_thread_join(&controller->thread, NULL);
     receiver_join(&controller->receiver);
 }

app/src/controller.h

@@ -1,30 +1,30 @@
 #ifndef CONTROLLER_H
 #define CONTROLLER_H
 
-#include <stdbool.h>
-#include <SDL2/SDL_mutex.h>
-#include <SDL2/SDL_thread.h>
+#include "common.h"
+
+#include <stdbool.h>
 
-#include "config.h"
 #include "control_msg.h"
 #include "receiver.h"
 #include "util/cbuf.h"
 #include "util/net.h"
+#include "util/thread.h"
 
 struct control_msg_queue CBUF(struct control_msg, 64);
 
 struct controller {
-    socket_t control_socket;
-    SDL_Thread *thread;
-    SDL_mutex *mutex;
-    SDL_cond *msg_cond;
+    sc_socket control_socket;
+    sc_thread thread;
+    sc_mutex mutex;
+    sc_cond msg_cond;
     bool stopped;
     struct control_msg_queue queue;
     struct receiver receiver;
 };
 
 bool
-controller_init(struct controller *controller, socket_t control_socket);
+controller_init(struct controller *controller, sc_socket control_socket);
 
 void
 controller_destroy(struct controller *controller);

app/src/coords.h

@@ -0,0 +1,24 @@
+#ifndef SC_COORDS
+#define SC_COORDS
+
+#include <stdint.h>
+
+struct sc_size {
+    uint16_t width;
+    uint16_t height;
+};
+
+struct sc_point {
+    int32_t x;
+    int32_t y;
+};
+
+struct sc_position {
+    // The video screen size may be different from the real device screen size,
+    // so store to which size the absolute position apply, to scale it
+    // accordingly.
+    struct sc_size screen_size;
+    struct sc_point point;
+};
+
+#endif

app/src/decoder.c

@@ -1,42 +1,44 @@
 #include "decoder.h"
 
+#include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
-#include <libavutil/time.h>
-#include <SDL2/SDL_events.h>
-#include <SDL2/SDL_mutex.h>
-#include <SDL2/SDL_thread.h>
-#include <unistd.h>
 
-#include "config.h"
-#include "compat.h"
 #include "events.h"
-#include "recorder.h"
 #include "video_buffer.h"
-#include "util/buffer_util.h"
+#include "trait/frame_sink.h"
 #include "util/log.h"
 
-// set the decoded frame as ready for rendering, and notify
+/** Downcast packet_sink to decoder */
+#define DOWNCAST(SINK) container_of(SINK, struct decoder, packet_sink)
+
 static void
-push_frame(struct decoder *decoder) {
-    bool previous_frame_skipped;
-    video_buffer_offer_decoded_frame(decoder->video_buffer,
-                                     &previous_frame_skipped);
-    if (previous_frame_skipped) {
-        // the previous EVENT_NEW_FRAME will consume this frame
-        return;
+decoder_close_first_sinks(struct decoder *decoder, unsigned count) {
+    while (count) {
+        struct sc_frame_sink *sink = decoder->sinks[--count];
+        sink->ops->close(sink);
     }
-    static SDL_Event new_frame_event = {
-        .type = EVENT_NEW_FRAME,
-    };
-    SDL_PushEvent(&new_frame_event);
 }
 
-void
-decoder_init(struct decoder *decoder, struct video_buffer *vb) {
-    decoder->video_buffer = vb;
+static inline void
+decoder_close_sinks(struct decoder *decoder) {
+    decoder_close_first_sinks(decoder, decoder->sink_count);
 }
 
-bool
+static bool
+decoder_open_sinks(struct decoder *decoder) {
+    for (unsigned i = 0; i < decoder->sink_count; ++i) {
+        struct sc_frame_sink *sink = decoder->sinks[i];
+        if (!sink->ops->open(sink)) {
+            LOGE("Could not open frame sink %d", i);
+            decoder_close_first_sinks(decoder, i);
+            return false;
+        }
+    }
+
+    return true;
+}
+
+static bool
 decoder_open(struct decoder *decoder, const AVCodec *codec) {
     decoder->codec_ctx = avcodec_alloc_context3(codec);
     if (!decoder->codec_ctx) {
@@ -50,52 +52,110 @@ decoder_open(struct decoder *decoder, const AVCodec *codec) {
         return false;
     }
 
+    decoder->frame = av_frame_alloc();
+    if (!decoder->frame) {
+        LOGE("Could not create decoder frame");
+        avcodec_close(decoder->codec_ctx);
+        avcodec_free_context(&decoder->codec_ctx);
+        return false;
+    }
+
+    if (!decoder_open_sinks(decoder)) {
+        LOGE("Could not open decoder sinks");
+        av_frame_free(&decoder->frame);
+        avcodec_close(decoder->codec_ctx);
+        avcodec_free_context(&decoder->codec_ctx);
+        return false;
+    }
+
     return true;
 }
 
-void
+static void
 decoder_close(struct decoder *decoder) {
+    decoder_close_sinks(decoder);
+    av_frame_free(&decoder->frame);
     avcodec_close(decoder->codec_ctx);
     avcodec_free_context(&decoder->codec_ctx);
 }
 
-bool
+static bool
+push_frame_to_sinks(struct decoder *decoder, const AVFrame *frame) {
+    for (unsigned i = 0; i < decoder->sink_count; ++i) {
+        struct sc_frame_sink *sink = decoder->sinks[i];
+        if (!sink->ops->push(sink, frame)) {
+            LOGE("Could not send frame to sink %d", i);
+            return false;
+        }
+    }
+
+    return true;
+}
+
+static bool
 decoder_push(struct decoder *decoder, const AVPacket *packet) {
-// the new decoding/encoding API has been introduced by:
-// <http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=7fc329e2dd6226dfecaa4a1d7adf353bf2773726>
-#ifdef SCRCPY_LAVF_HAS_NEW_ENCODING_DECODING_API
-    int ret;
-    if ((ret = avcodec_send_packet(decoder->codec_ctx, packet)) < 0) {
+    bool is_config = packet->pts == AV_NOPTS_VALUE;
+    if (is_config) {
+        // nothing to do
+        return true;
+    }
+
+    int ret = avcodec_send_packet(decoder->codec_ctx, packet);
+    if (ret < 0 && ret != AVERROR(EAGAIN)) {
         LOGE("Could not send video packet: %d", ret);
         return false;
     }
-    ret = avcodec_receive_frame(decoder->codec_ctx,
-                                decoder->video_buffer->decoding_frame);
+    ret = avcodec_receive_frame(decoder->codec_ctx, decoder->frame);
     if (!ret) {
         // a frame was received
-        push_frame(decoder);
+        bool ok = push_frame_to_sinks(decoder, decoder->frame);
+        // A frame lost should not make the whole pipeline fail. The error, if
+        // any, is already logged.
+        (void) ok;
+
+        av_frame_unref(decoder->frame);
     } else if (ret != AVERROR(EAGAIN)) {
         LOGE("Could not receive video frame: %d", ret);
         return false;
     }
-#else
-    int got_picture;
-    int len = avcodec_decode_video2(decoder->codec_ctx,
-                                    decoder->video_buffer->decoding_frame,
-                                    &got_picture,
-                                    packet);
-    if (len < 0) {
-        LOGE("Could not decode video packet: %d", len);
-        return false;
-    }
-    if (got_picture) {
-        push_frame(decoder);
-    }
-#endif
     return true;
 }
 
-void
-decoder_interrupt(struct decoder *decoder) {
-    video_buffer_interrupt(decoder->video_buffer);
+static bool
+decoder_packet_sink_open(struct sc_packet_sink *sink, const AVCodec *codec) {
+    struct decoder *decoder = DOWNCAST(sink);
+    return decoder_open(decoder, codec);
+}
+
+static void
+decoder_packet_sink_close(struct sc_packet_sink *sink) {
+    struct decoder *decoder = DOWNCAST(sink);
+    decoder_close(decoder);
+}
+
+static bool
+decoder_packet_sink_push(struct sc_packet_sink *sink, const AVPacket *packet) {
+    struct decoder *decoder = DOWNCAST(sink);
+    return decoder_push(decoder, packet);
+}
+
+void
+decoder_init(struct decoder *decoder) {
+    decoder->sink_count = 0;
+
+    static const struct sc_packet_sink_ops ops = {
+        .open = decoder_packet_sink_open,
+        .close = decoder_packet_sink_close,
+        .push = decoder_packet_sink_push,
+    };
+
+    decoder->packet_sink.ops = &ops;
+}
+
+void
+decoder_add_sink(struct decoder *decoder, struct sc_frame_sink *sink) {
+    assert(decoder->sink_count < DECODER_MAX_SINKS);
+    assert(sink);
+    assert(sink->ops);
+    decoder->sinks[decoder->sink_count++] = sink;
 }

app/src/decoder.h

@@ -1,31 +1,29 @@
 #ifndef DECODER_H
 #define DECODER_H
 
+#include "common.h"
+
+#include "trait/packet_sink.h"
+
 #include <stdbool.h>
 #include <libavformat/avformat.h>
 
-#include "config.h"
-
-struct video_buffer;
+#define DECODER_MAX_SINKS 2
 
 struct decoder {
-    struct video_buffer *video_buffer;
+    struct sc_packet_sink packet_sink; // packet sink trait
+
+    struct sc_frame_sink *sinks[DECODER_MAX_SINKS];
+    unsigned sink_count;
+
     AVCodecContext *codec_ctx;
+    AVFrame *frame;
 };
 
 void
-decoder_init(struct decoder *decoder, struct video_buffer *vb);
-
-bool
-decoder_open(struct decoder *decoder, const AVCodec *codec);
+decoder_init(struct decoder *decoder);
 
 void
-decoder_close(struct decoder *decoder);
-
-bool
-decoder_push(struct decoder *decoder, const AVPacket *packet);
-
-void
-decoder_interrupt(struct decoder *decoder);
+decoder_add_sink(struct decoder *decoder, struct sc_frame_sink *sink);
 
 #endif

app/src/device.c

@@ -1,24 +0,0 @@
-#include "device.h"
-
-#include "config.h"
-#include "util/log.h"
-
-bool
-device_read_info(socket_t device_socket, char *device_name, struct size *size) {
-    unsigned char buf[DEVICE_NAME_FIELD_LENGTH + 4];
-    int r = net_recv_all(device_socket, buf, sizeof(buf));
-    if (r < DEVICE_NAME_FIELD_LENGTH + 4) {
-        LOGE("Could not retrieve device information");
-        return false;
-    }
-    // in case the client sends garbage
-    buf[DEVICE_NAME_FIELD_LENGTH - 1] = '\0';
-    // strcpy is safe here, since name contains at least
-    // DEVICE_NAME_FIELD_LENGTH bytes and strlen(buf) < DEVICE_NAME_FIELD_LENGTH
-    strcpy(device_name, (char *) buf);
-    size->width = (buf[DEVICE_NAME_FIELD_LENGTH] << 8)
-            | buf[DEVICE_NAME_FIELD_LENGTH + 1];
-    size->height = (buf[DEVICE_NAME_FIELD_LENGTH + 2] << 8)
-            | buf[DEVICE_NAME_FIELD_LENGTH + 3];
-    return true;
-}

app/src/device.h

@@ -1,16 +0,0 @@
-#ifndef DEVICE_H
-#define DEVICE_H
-
-#include <stdbool.h>
-
-#include "config.h"
-#include "common.h"
-#include "util/net.h"
-
-#define DEVICE_NAME_FIELD_LENGTH 64
-
-// name must be at least DEVICE_NAME_FIELD_LENGTH bytes
-bool
-device_read_info(socket_t device_socket, char *device_name, struct size *size);
-
-#endif

app/src/device_msg.c

@@ -1,8 +1,8 @@
 #include "device_msg.h"
 
+#include <stdlib.h>
 #include <string.h>
 
-#include "config.h"
 #include "util/buffer_util.h"
 #include "util/log.h"
 
@@ -21,7 +21,7 @@ device_msg_deserialize(const unsigned char *buf, size_t len,
             if (clipboard_len > len - 5) {
                 return 0; // not available
             }
-            char *text = SDL_malloc(clipboard_len + 1);
+            char *text = malloc(clipboard_len + 1);
             if (!text) {
                 LOGW("Could not allocate text for clipboard");
                 return -1;
@@ -43,6 +43,6 @@ device_msg_deserialize(const unsigned char *buf, size_t len,
 void
 device_msg_destroy(struct device_msg *msg) {
     if (msg->type == DEVICE_MSG_TYPE_CLIPBOARD) {
-        SDL_free(msg->clipboard.text);
+        free(msg->clipboard.text);
     }
 }

app/src/device_msg.h

@@ -1,12 +1,12 @@
 #ifndef DEVICEMSG_H
 #define DEVICEMSG_H
 
+#include "common.h"
+
 #include <stdbool.h>
 #include <stdint.h>
 #include <unistd.h>
 
-#include "config.h"
-
 #define DEVICE_MSG_MAX_SIZE (1 << 18) // 256k
 // type: 1 byte; length: 4 bytes
 #define DEVICE_MSG_TEXT_MAX_LENGTH (DEVICE_MSG_MAX_SIZE - 5)
@@ -19,7 +19,7 @@ struct device_msg {
     enum device_msg_type type;
     union {
         struct {
-            char *text; // owned, to be freed by SDL_free()
+            char *text; // owned, to be freed by free()
         } clipboard;
     };
 };

app/src/event_converter.h

@@ -1,29 +0,0 @@
-#ifndef CONVERT_H
-#define CONVERT_H
-
-#include <stdbool.h>
-#include <SDL2/SDL_events.h>
-
-#include "config.h"
-#include "control_msg.h"
-
-bool
-convert_keycode_action(SDL_EventType from, enum android_keyevent_action *to);
-
-enum android_metastate
-convert_meta_state(SDL_Keymod mod);
-
-bool
-convert_keycode(SDL_Keycode from, enum android_keycode *to, uint16_t mod,
-                bool prefer_text);
-
-enum android_motionevent_buttons
-convert_mouse_buttons(uint32_t state);
-
-bool
-convert_mouse_action(SDL_EventType from, enum android_motionevent_action *to);
-
-bool
-convert_touch_action(SDL_EventType from, enum android_motionevent_action *to);
-
-#endif

app/src/events.h

@@ -1,3 +1,4 @@
-#define EVENT_NEW_SESSION SDL_USEREVENT
-#define EVENT_NEW_FRAME (SDL_USEREVENT + 1)
-#define EVENT_STREAM_STOPPED (SDL_USEREVENT + 2)
+#define EVENT_NEW_FRAME                 SDL_USEREVENT
+#define EVENT_STREAM_STOPPED           (SDL_USEREVENT + 1)
+#define EVENT_SERVER_CONNECTION_FAILED (SDL_USEREVENT + 2)
+#define EVENT_SERVER_CONNECTED         (SDL_USEREVENT + 3)

app/src/file_handler.c

@@ -3,16 +3,14 @@
 #include <assert.h>
 #include <string.h>
 
-#include "config.h"
-#include "command.h"
-#include "util/lock.h"
+#include "adb.h"
 #include "util/log.h"
 
-#define DEFAULT_PUSH_TARGET "/sdcard/"
+#define DEFAULT_PUSH_TARGET "/sdcard/Download/"
 
 static void
 file_handler_request_destroy(struct file_handler_request *req) {
-    SDL_free(req->file);
+    free(req->file);
 }
 
 bool
@@ -21,21 +19,23 @@ file_handler_init(struct file_handler *file_handler, const char *serial,
 
     cbuf_init(&file_handler->queue);
 
-    if (!(file_handler->mutex = SDL_CreateMutex())) {
+    bool ok = sc_mutex_init(&file_handler->mutex);
+    if (!ok) {
         return false;
     }
 
-    if (!(file_handler->event_cond = SDL_CreateCond())) {
-        SDL_DestroyMutex(file_handler->mutex);
+    ok = sc_cond_init(&file_handler->event_cond);
+    if (!ok) {
+        sc_mutex_destroy(&file_handler->mutex);
         return false;
     }
 
     if (serial) {
-        file_handler->serial = SDL_strdup(serial);
+        file_handler->serial = strdup(serial);
         if (!file_handler->serial) {
             LOGW("Could not strdup serial");
-            SDL_DestroyCond(file_handler->event_cond);
-            SDL_DestroyMutex(file_handler->mutex);
+            sc_cond_destroy(&file_handler->event_cond);
+            sc_mutex_destroy(&file_handler->mutex);
             return false;
         }
     } else {
@@ -46,7 +46,7 @@ file_handler_init(struct file_handler *file_handler, const char *serial,
     file_handler->initialized = false;
 
     file_handler->stopped = false;
-    file_handler->current_process = PROCESS_NONE;
+    file_handler->current_process = SC_PROCESS_NONE;
 
     file_handler->push_target = push_target ? push_target : DEFAULT_PUSH_TARGET;
 
@@ -55,9 +55,9 @@ file_handler_init(struct file_handler *file_handler, const char *serial,
 
 void
 file_handler_destroy(struct file_handler *file_handler) {
-    SDL_DestroyCond(file_handler->event_cond);
-    SDL_DestroyMutex(file_handler->mutex);
-    SDL_free(file_handler->serial);
+    sc_cond_destroy(&file_handler->event_cond);
+    sc_mutex_destroy(&file_handler->mutex);
+    free(file_handler->serial);
 
     struct file_handler_request req;
     while (cbuf_take(&file_handler->queue, &req)) {
@@ -65,12 +65,12 @@ file_handler_destroy(struct file_handler *file_handler) {
     }
 }
 
-static process_t
+static sc_pid
 install_apk(const char *serial, const char *file) {
     return adb_install(serial, file);
 }
 
-static process_t
+static sc_pid
 push_file(const char *serial, const char *file, const char *push_target) {
     return adb_push(serial, file, push_target);
 }
@@ -93,13 +93,13 @@ file_handler_request(struct file_handler *file_handler,
         .file = file,
     };
 
-    mutex_lock(file_handler->mutex);
+    sc_mutex_lock(&file_handler->mutex);
     bool was_empty = cbuf_is_empty(&file_handler->queue);
     bool res = cbuf_push(&file_handler->queue, req);
     if (was_empty) {
-        cond_signal(file_handler->event_cond);
+        sc_cond_signal(&file_handler->event_cond);
     }
-    mutex_unlock(file_handler->mutex);
+    sc_mutex_unlock(&file_handler->mutex);
     return res;
 }
 
@@ -108,14 +108,14 @@ run_file_handler(void *data) {
     struct file_handler *file_handler = data;
 
     for (;;) {
-        mutex_lock(file_handler->mutex);
-        file_handler->current_process = PROCESS_NONE;
+        sc_mutex_lock(&file_handler->mutex);
+        file_handler->current_process = SC_PROCESS_NONE;
         while (!file_handler->stopped && cbuf_is_empty(&file_handler->queue)) {
-            cond_wait(file_handler->event_cond, file_handler->mutex);
+            sc_cond_wait(&file_handler->event_cond, &file_handler->mutex);
         }
         if (file_handler->stopped) {
             // stop immediately, do not process further events
-            mutex_unlock(file_handler->mutex);
+            sc_mutex_unlock(&file_handler->mutex);
             break;
         }
         struct file_handler_request req;
@@ -123,26 +123,26 @@ run_file_handler(void *data) {
         assert(non_empty);
         (void) non_empty;
 
-        process_t process;
+        sc_pid pid;
         if (req.action == ACTION_INSTALL_APK) {
             LOGI("Installing %s...", req.file);
-            process = install_apk(file_handler->serial, req.file);
+            pid = install_apk(file_handler->serial, req.file);
         } else {
             LOGI("Pushing %s...", req.file);
-            process = push_file(file_handler->serial, req.file,
-                                file_handler->push_target);
+            pid = push_file(file_handler->serial, req.file,
+                            file_handler->push_target);
         }
-        file_handler->current_process = process;
-        mutex_unlock(file_handler->mutex);
+        file_handler->current_process = pid;
+        sc_mutex_unlock(&file_handler->mutex);
 
         if (req.action == ACTION_INSTALL_APK) {
-            if (process_check_success(process, "adb install")) {
+            if (sc_process_check_success(pid, "adb install", false)) {
                 LOGI("%s successfully installed", req.file);
             } else {
                 LOGE("Failed to install %s", req.file);
             }
         } else {
-            if (process_check_success(process, "adb push")) {
+            if (sc_process_check_success(pid, "adb push", false)) {
                 LOGI("%s successfully pushed to %s", req.file,
                                                      file_handler->push_target);
             } else {
@@ -151,6 +151,14 @@ run_file_handler(void *data) {
             }
         }
 
+        sc_mutex_lock(&file_handler->mutex);
+        // Close the process (it is necessarily already terminated)
+        // Execute this call with mutex locked to avoid race conditions with
+        // file_handler_stop()
+        sc_process_close(file_handler->current_process);
+        file_handler->current_process = SC_PROCESS_NONE;
+        sc_mutex_unlock(&file_handler->mutex);
+
         file_handler_request_destroy(&req);
     }
     return 0;
@@ -160,9 +168,9 @@ bool
 file_handler_start(struct file_handler *file_handler) {
     LOGD("Starting file_handler thread");
 
-    file_handler->thread = SDL_CreateThread(run_file_handler, "file_handler",
-                                            file_handler);
-    if (!file_handler->thread) {
+    bool ok = sc_thread_create(&file_handler->thread, run_file_handler,
+                               "file_handler", file_handler);
+    if (!ok) {
         LOGC("Could not start file_handler thread");
         return false;
     }
@@ -172,20 +180,18 @@ file_handler_start(struct file_handler *file_handler) {
 
 void
 file_handler_stop(struct file_handler *file_handler) {
-    mutex_lock(file_handler->mutex);
+    sc_mutex_lock(&file_handler->mutex);
     file_handler->stopped = true;
-    cond_signal(file_handler->event_cond);
-    if (file_handler->current_process != PROCESS_NONE) {
-        if (!cmd_terminate(file_handler->current_process)) {
-            LOGW("Could not terminate install process");
+    sc_cond_signal(&file_handler->event_cond);
+    if (file_handler->current_process != SC_PROCESS_NONE) {
+        if (!sc_process_terminate(file_handler->current_process)) {
+            LOGW("Could not terminate push/install process");
         }
-        cmd_simple_wait(file_handler->current_process, NULL);
-        file_handler->current_process = PROCESS_NONE;
     }
-    mutex_unlock(file_handler->mutex);
+    sc_mutex_unlock(&file_handler->mutex);
 }
 
 void
 file_handler_join(struct file_handler *file_handler) {
-    SDL_WaitThread(file_handler->thread, NULL);
+    sc_thread_join(&file_handler->thread, NULL);
 }

app/src/file_handler.h

@@ -1,13 +1,13 @@
 #ifndef FILE_HANDLER_H
 #define FILE_HANDLER_H
 
-#include <stdbool.h>
-#include <SDL2/SDL_mutex.h>
-#include <SDL2/SDL_thread.h>
+#include "common.h"
 
-#include "config.h"
-#include "command.h"
+#include <stdbool.h>
+
+#include "adb.h"
 #include "util/cbuf.h"
+#include "util/thread.h"
 
 typedef enum {
     ACTION_INSTALL_APK,
@@ -24,12 +24,12 @@ struct file_handler_request_queue CBUF(struct file_handler_request, 16);
 struct file_handler {
     char *serial;
     const char *push_target;
-    SDL_Thread *thread;
-    SDL_mutex *mutex;
-    SDL_cond *event_cond;
+    sc_thread thread;
+    sc_mutex mutex;
+    sc_cond event_cond;
     bool stopped;
     bool initialized;
-    process_t current_process;
+    sc_pid current_process;
     struct file_handler_request_queue queue;
 };
 
@@ -49,7 +49,7 @@ file_handler_stop(struct file_handler *file_handler);
 void
 file_handler_join(struct file_handler *file_handler);
 
-// take ownership of file, and will SDL_free() it
+// take ownership of file, and will free() it
 bool
 file_handler_request(struct file_handler *file_handler,
                      file_handler_action_t action,

app/src/fps_counter.c

@@ -1,28 +1,25 @@
 #include "fps_counter.h"
 
 #include <assert.h>
-#include <SDL2/SDL_timer.h>
 
-#include "config.h"
-#include "util/lock.h"
 #include "util/log.h"
 
-#define FPS_COUNTER_INTERVAL_MS 1000
+#define FPS_COUNTER_INTERVAL SC_TICK_FROM_SEC(1)
 
 bool
 fps_counter_init(struct fps_counter *counter) {
-    counter->mutex = SDL_CreateMutex();
-    if (!counter->mutex) {
+    bool ok = sc_mutex_init(&counter->mutex);
+    if (!ok) {
         return false;
     }
 
-    counter->state_cond = SDL_CreateCond();
-    if (!counter->state_cond) {
-        SDL_DestroyMutex(counter->mutex);
+    ok = sc_cond_init(&counter->state_cond);
+    if (!ok) {
+        sc_mutex_destroy(&counter->mutex);
         return false;
     }
 
-    counter->thread = NULL;
+    counter->thread_started = false;
     atomic_init(&counter->started, 0);
     // no need to initialize the other fields, they are unused until started
 
@@ -31,8 +28,8 @@ fps_counter_init(struct fps_counter *counter) {
 
 void
 fps_counter_destroy(struct fps_counter *counter) {
-    SDL_DestroyCond(counter->state_cond);
-    SDL_DestroyMutex(counter->mutex);
+    sc_cond_destroy(&counter->state_cond);
+    sc_mutex_destroy(&counter->mutex);
 }
 
 static inline bool
@@ -49,7 +46,7 @@ set_started(struct fps_counter *counter, bool started) {
 static void
 display_fps(struct fps_counter *counter) {
     unsigned rendered_per_second =
-        counter->nr_rendered * 1000 / FPS_COUNTER_INTERVAL_MS;
+        counter->nr_rendered * SC_TICK_FREQ / FPS_COUNTER_INTERVAL;
     if (counter->nr_skipped) {
         LOGI("%u fps (+%u frames skipped)", rendered_per_second,
                                             counter->nr_skipped);
@@ -70,53 +67,54 @@ check_interval_expired(struct fps_counter *counter, uint32_t now) {
     counter->nr_skipped = 0;
     // add a multiple of the interval
     uint32_t elapsed_slices =
-        (now - counter->next_timestamp) / FPS_COUNTER_INTERVAL_MS + 1;
-    counter->next_timestamp += FPS_COUNTER_INTERVAL_MS * elapsed_slices;
+        (now - counter->next_timestamp) / FPS_COUNTER_INTERVAL + 1;
+    counter->next_timestamp += FPS_COUNTER_INTERVAL * elapsed_slices;
 }
 
 static int
 run_fps_counter(void *data) {
     struct fps_counter *counter = data;
 
-    mutex_lock(counter->mutex);
+    sc_mutex_lock(&counter->mutex);
     while (!counter->interrupted) {
         while (!counter->interrupted && !is_started(counter)) {
-            cond_wait(counter->state_cond, counter->mutex);
+            sc_cond_wait(&counter->state_cond, &counter->mutex);
         }
         while (!counter->interrupted && is_started(counter)) {
-            uint32_t now = SDL_GetTicks();
+            sc_tick now = sc_tick_now();
             check_interval_expired(counter, now);
 
-            assert(counter->next_timestamp > now);
-            uint32_t remaining = counter->next_timestamp - now;
-
             // ignore the reason (timeout or signaled), we just loop anyway
-            cond_wait_timeout(counter->state_cond, counter->mutex, remaining);
+            sc_cond_timedwait(&counter->state_cond, &counter->mutex,
+                              counter->next_timestamp);
         }
     }
-    mutex_unlock(counter->mutex);
+    sc_mutex_unlock(&counter->mutex);
     return 0;
 }
 
 bool
 fps_counter_start(struct fps_counter *counter) {
-    mutex_lock(counter->mutex);
-    counter->next_timestamp = SDL_GetTicks() + FPS_COUNTER_INTERVAL_MS;
+    sc_mutex_lock(&counter->mutex);
+    counter->next_timestamp = sc_tick_now() + FPS_COUNTER_INTERVAL;
     counter->nr_rendered = 0;
     counter->nr_skipped = 0;
-    mutex_unlock(counter->mutex);
+    sc_mutex_unlock(&counter->mutex);
 
     set_started(counter, true);
-    cond_signal(counter->state_cond);
+    sc_cond_signal(&counter->state_cond);
 
-    // counter->thread is always accessed from the same thread, no need to lock
-    if (!counter->thread) {
-        counter->thread =
-            SDL_CreateThread(run_fps_counter, "fps counter", counter);
-        if (!counter->thread) {
+    // counter->thread_started and counter->thread are always accessed from the
+    // same thread, no need to lock
+    if (!counter->thread_started) {
+        bool ok = sc_thread_create(&counter->thread, run_fps_counter,
+                                   "fps counter", counter);
+        if (!ok) {
             LOGE("Could not start FPS counter thread");
             return false;
         }
+
+        counter->thread_started = true;
     }
 
     return true;
@@ -125,7 +123,7 @@ fps_counter_start(struct fps_counter *counter) {
 void
 fps_counter_stop(struct fps_counter *counter) {
     set_started(counter, false);
-    cond_signal(counter->state_cond);
+    sc_cond_signal(&counter->state_cond);
 }
 
 bool
@@ -135,21 +133,25 @@ fps_counter_is_started(struct fps_counter *counter) {
 
 void
 fps_counter_interrupt(struct fps_counter *counter) {
-    if (!counter->thread) {
+    if (!counter->thread_started) {
         return;
     }
 
-    mutex_lock(counter->mutex);
+    sc_mutex_lock(&counter->mutex);
     counter->interrupted = true;
-    mutex_unlock(counter->mutex);
+    sc_mutex_unlock(&counter->mutex);
     // wake up blocking wait
-    cond_signal(counter->state_cond);
+    sc_cond_signal(&counter->state_cond);
 }
 
 void
 fps_counter_join(struct fps_counter *counter) {
-    if (counter->thread) {
-        SDL_WaitThread(counter->thread, NULL);
+    if (counter->thread_started) {
+        // interrupted must be set by the thread calling join(), so no need to
+        // lock for the assertion
+        assert(counter->interrupted);
+
+        sc_thread_join(&counter->thread, NULL);
     }
 }
 
@@ -159,11 +161,11 @@ fps_counter_add_rendered_frame(struct fps_counter *counter) {
         return;
     }
 
-    mutex_lock(counter->mutex);
-    uint32_t now = SDL_GetTicks();
+    sc_mutex_lock(&counter->mutex);
+    sc_tick now = sc_tick_now();
     check_interval_expired(counter, now);
     ++counter->nr_rendered;
-    mutex_unlock(counter->mutex);
+    sc_mutex_unlock(&counter->mutex);
 }
 
 void
@@ -172,9 +174,9 @@ fps_counter_add_skipped_frame(struct fps_counter *counter) {
         return;
     }
 
-    mutex_lock(counter->mutex);
-    uint32_t now = SDL_GetTicks();
+    sc_mutex_lock(&counter->mutex);
+    sc_tick now = sc_tick_now();
     check_interval_expired(counter, now);
     ++counter->nr_skipped;
-    mutex_unlock(counter->mutex);
+    sc_mutex_unlock(&counter->mutex);
 }

app/src/fps_counter.h

@@ -1,18 +1,20 @@
 #ifndef FPSCOUNTER_H
 #define FPSCOUNTER_H
 
+#include "common.h"
+
 #include <stdatomic.h>
 #include <stdbool.h>
 #include <stdint.h>
-#include <SDL2/SDL_mutex.h>
-#include <SDL2/SDL_thread.h>
 
-#include "config.h"
+#include "util/thread.h"
 
 struct fps_counter {
-    SDL_Thread *thread;
-    SDL_mutex *mutex;
-    SDL_cond *state_cond;
+    sc_thread thread;
+    sc_mutex mutex;
+    sc_cond state_cond;
+
+    bool thread_started;
 
     // atomic so that we can check without locking the mutex
     // if the FPS counter is disabled, we don't want to lock unnecessarily
@@ -22,7 +24,7 @@ struct fps_counter {
     bool interrupted;
     unsigned nr_rendered;
     unsigned nr_skipped;
-    uint32_t next_timestamp;
+    sc_tick next_timestamp;
 };
 
 bool

app/src/frame_buffer.c

@@ -0,0 +1,88 @@
+#include "frame_buffer.h"
+
+#include <assert.h>
+#include <libavutil/avutil.h>
+#include <libavformat/avformat.h>
+
+#include "util/log.h"
+
+bool
+sc_frame_buffer_init(struct sc_frame_buffer *fb) {
+    fb->pending_frame = av_frame_alloc();
+    if (!fb->pending_frame) {
+        return false;
+    }
+
+    fb->tmp_frame = av_frame_alloc();
+    if (!fb->tmp_frame) {
+        av_frame_free(&fb->pending_frame);
+        return false;
+    }
+
+    bool ok = sc_mutex_init(&fb->mutex);
+    if (!ok) {
+        av_frame_free(&fb->pending_frame);
+        av_frame_free(&fb->tmp_frame);
+        return false;
+    }
+
+    // there is initially no frame, so consider it has already been consumed
+    fb->pending_frame_consumed = true;
+
+    return true;
+}
+
+void
+sc_frame_buffer_destroy(struct sc_frame_buffer *fb) {
+    sc_mutex_destroy(&fb->mutex);
+    av_frame_free(&fb->pending_frame);
+    av_frame_free(&fb->tmp_frame);
+}
+
+static inline void
+swap_frames(AVFrame **lhs, AVFrame **rhs) {
+    AVFrame *tmp = *lhs;
+    *lhs = *rhs;
+    *rhs = tmp;
+}
+
+bool
+sc_frame_buffer_push(struct sc_frame_buffer *fb, const AVFrame *frame,
+                  bool *previous_frame_skipped) {
+    sc_mutex_lock(&fb->mutex);
+
+    // Use a temporary frame to preserve pending_frame in case of error.
+    // tmp_frame is an empty frame, no need to call av_frame_unref() beforehand.
+    int r = av_frame_ref(fb->tmp_frame, frame);
+    if (r) {
+        LOGE("Could not ref frame: %d", r);
+        return false;
+    }
+
+    // Now that av_frame_ref() succeeded, we can replace the previous
+    // pending_frame
+    swap_frames(&fb->pending_frame, &fb->tmp_frame);
+    av_frame_unref(fb->tmp_frame);
+
+    if (previous_frame_skipped) {
+        *previous_frame_skipped = !fb->pending_frame_consumed;
+    }
+    fb->pending_frame_consumed = false;
+
+    sc_mutex_unlock(&fb->mutex);
+
+    return true;
+}
+
+void
+sc_frame_buffer_consume(struct sc_frame_buffer *fb, AVFrame *dst) {
+    sc_mutex_lock(&fb->mutex);
+    assert(!fb->pending_frame_consumed);
+    fb->pending_frame_consumed = true;
+
+    av_frame_move_ref(dst, fb->pending_frame);
+    // av_frame_move_ref() resets its source frame, so no need to call
+    // av_frame_unref()
+
+    sc_mutex_unlock(&fb->mutex);
+}

app/src/frame_buffer.h

@@ -0,0 +1,44 @@
+#ifndef SC_FRAME_BUFFER_H
+#define SC_FRAME_BUFFER_H
+
+#include "common.h"
+
+#include <stdbool.h>
+
+#include "util/thread.h"
+
+// forward declarations
+typedef struct AVFrame AVFrame;
+
+/**
+ * A frame buffer holds 1 pending frame, which is the last frame received from
+ * the producer (typically, the decoder).
+ *
+ * If a pending frame has not been consumed when the producer pushes a new
+ * frame, then it is lost. The intent is to always provide access to the very
+ * last frame to minimize latency.
+ */
+
+struct sc_frame_buffer {
+    AVFrame *pending_frame;
+    AVFrame *tmp_frame; // To preserve the pending frame on error
+
+    sc_mutex mutex;
+
+    bool pending_frame_consumed;
+};
+
+bool
+sc_frame_buffer_init(struct sc_frame_buffer *fb);
+
+void
+sc_frame_buffer_destroy(struct sc_frame_buffer *fb);
+
+bool
+sc_frame_buffer_push(struct sc_frame_buffer *fb, const AVFrame *frame,
+                     bool *skipped);
+
+void
+sc_frame_buffer_consume(struct sc_frame_buffer *fb, AVFrame *dst);
+
+#endif

app/src/hid_keyboard.c

@@ -0,0 +1,363 @@
+#include "hid_keyboard.h"
+
+#include <assert.h>
+#include <SDL2/SDL_events.h>
+
+#include "util/log.h"
+
+/** Downcast key processor to hid_keyboard */
+#define DOWNCAST(KP) container_of(KP, struct sc_hid_keyboard, key_processor)
+
+#define HID_KEYBOARD_ACCESSORY_ID 1
+
+#define HID_MODIFIER_NONE 0x00
+#define HID_MODIFIER_LEFT_CONTROL (1 << 0)
+#define HID_MODIFIER_LEFT_SHIFT (1 << 1)
+#define HID_MODIFIER_LEFT_ALT (1 << 2)
+#define HID_MODIFIER_LEFT_GUI (1 << 3)
+#define HID_MODIFIER_RIGHT_CONTROL (1 << 4)
+#define HID_MODIFIER_RIGHT_SHIFT (1 << 5)
+#define HID_MODIFIER_RIGHT_ALT (1 << 6)
+#define HID_MODIFIER_RIGHT_GUI (1 << 7)
+
+#define HID_KEYBOARD_INDEX_MODIFIER 0
+#define HID_KEYBOARD_INDEX_KEYS 2
+
+// USB HID protocol says 6 keys in an event is the requirement for BIOS
+// keyboard support, though OS could support more keys via modifying the report
+// desc. 6 should be enough for scrcpy.
+#define HID_KEYBOARD_MAX_KEYS 6
+#define HID_KEYBOARD_EVENT_SIZE (2 + HID_KEYBOARD_MAX_KEYS)
+
+#define HID_RESERVED 0x00
+#define HID_ERROR_ROLL_OVER 0x01
+
+/**
+ * For HID over AOAv2, only report descriptor is needed.
+ *
+ * The specification is available here:
+ * <https://www.usb.org/sites/default/files/hid1_11.pdf>
+ *
+ * In particular, read:
+ *  - 6.2.2 Report Descriptor
+ *  - Appendix B.1 Protocol 1 (Keyboard)
+ *  - Appendix C: Keyboard Implementation
+ *
+ * Normally a basic HID keyboard uses 8 bytes:
+ *     Modifier Reserved Key Key Key Key Key Key
+ *
+ * You can dump your device's report descriptor with:
+ *
+ *     sudo usbhid-dump -m vid:pid -e descriptor
+ *
+ * (change vid:pid' to your device's vendor ID and product ID).
+ */
+static const unsigned char keyboard_report_desc[]  = {
+    // Usage Page (Generic Desktop)
+    0x05, 0x01,
+    // Usage (Keyboard)
+    0x09, 0x06,
+
+    // Collection (Application)
+    0xA1, 0x01,
+
+    // Usage Page (Key Codes)
+    0x05, 0x07,
+    // Usage Minimum (224)
+    0x19, 0xE0,
+     // Usage Maximum (231)
+    0x29, 0xE7,
+    // Logical Minimum (0)
+    0x15, 0x00,
+    // Logical Maximum (1)
+    0x25, 0x01,
+    // Report Size (1)
+    0x75, 0x01,
+    // Report Count (8)
+    0x95, 0x08,
+    // Input (Data, Variable, Absolute): Modifier byte
+    0x81, 0x02,
+
+    // Report Size (8)
+    0x75, 0x08,
+    // Report Count (1)
+    0x95, 0x01,
+    // Input (Constant): Reserved byte
+    0x81, 0x01,
+
+    // Usage Page (LEDs)
+    0x05, 0x08,
+    // Usage Minimum (1)
+    0x19, 0x01,
+    // Usage Maximum (5)
+    0x29, 0x05,
+    // Report Size (1)
+    0x75, 0x01,
+    // Report Count (5)
+    0x95, 0x05,
+    // Output (Data, Variable, Absolute): LED report
+    0x91, 0x02,
+
+    // Report Size (3)
+    0x75, 0x03,
+    // Report Count (1)
+    0x95, 0x01,
+    // Output (Constant): LED report padding
+    0x91, 0x01,
+
+    // Usage Page (Key Codes)
+    0x05, 0x07,
+    // Usage Minimum (0)
+    0x19, 0x00,
+    // Usage Maximum (101)
+    0x29, SC_HID_KEYBOARD_KEYS - 1,
+    // Logical Minimum (0)
+    0x15, 0x00,
+    // Logical Maximum(101)
+    0x25, SC_HID_KEYBOARD_KEYS - 1,
+    // Report Size (8)
+    0x75, 0x08,
+    // Report Count (6)
+    0x95, HID_KEYBOARD_MAX_KEYS,
+    // Input (Data, Array): Keys
+    0x81, 0x00,
+
+    // End Collection
+    0xC0
+};
+
+static unsigned char
+sdl_keymod_to_hid_modifiers(SDL_Keymod mod) {
+    unsigned char modifiers = HID_MODIFIER_NONE;
+    if (mod & KMOD_LCTRL) {
+        modifiers |= HID_MODIFIER_LEFT_CONTROL;
+    }
+    if (mod & KMOD_LSHIFT) {
+        modifiers |= HID_MODIFIER_LEFT_SHIFT;
+    }
+    if (mod & KMOD_LALT) {
+        modifiers |= HID_MODIFIER_LEFT_ALT;
+    }
+    if (mod & KMOD_LGUI) {
+        modifiers |= HID_MODIFIER_LEFT_GUI;
+    }
+    if (mod & KMOD_RCTRL) {
+        modifiers |= HID_MODIFIER_RIGHT_CONTROL;
+    }
+    if (mod & KMOD_RSHIFT) {
+        modifiers |= HID_MODIFIER_RIGHT_SHIFT;
+    }
+    if (mod & KMOD_RALT) {
+        modifiers |= HID_MODIFIER_RIGHT_ALT;
+    }
+    if (mod & KMOD_RGUI) {
+        modifiers |= HID_MODIFIER_RIGHT_GUI;
+    }
+    return modifiers;
+}
+
+static bool
+sc_hid_keyboard_event_init(struct sc_hid_event *hid_event) {
+    unsigned char *buffer = malloc(HID_KEYBOARD_EVENT_SIZE);
+    if (!buffer) {
+        return false;
+    }
+
+    buffer[HID_KEYBOARD_INDEX_MODIFIER] = HID_MODIFIER_NONE;
+    buffer[1] = HID_RESERVED;
+    memset(&buffer[HID_KEYBOARD_INDEX_KEYS], 0, HID_KEYBOARD_MAX_KEYS);
+
+    sc_hid_event_init(hid_event, HID_KEYBOARD_ACCESSORY_ID, buffer,
+                      HID_KEYBOARD_EVENT_SIZE);
+    return true;
+}
+
+static inline bool
+scancode_is_modifier(SDL_Scancode scancode) {
+    return scancode >= SDL_SCANCODE_LCTRL && scancode <= SDL_SCANCODE_RGUI;
+}
+
+static bool
+convert_hid_keyboard_event(struct sc_hid_keyboard *kb,
+                           struct sc_hid_event *hid_event,
+                           const SDL_KeyboardEvent *event) {
+    SDL_Scancode scancode = event->keysym.scancode;
+    assert(scancode >= 0);
+
+    // SDL also generates events when only modifiers are pressed, we cannot
+    // ignore them totally, for example press 'a' first then press 'Control',
+    // if we ignore 'Control' event, only 'a' is sent.
+    if (scancode >= SC_HID_KEYBOARD_KEYS && !scancode_is_modifier(scancode)) {
+        // Scancode to ignore
+        return false;
+    }
+
+    if (!sc_hid_keyboard_event_init(hid_event)) {
+        LOGW("Could not initialize HID keyboard event");
+        return false;
+    }
+
+    unsigned char modifiers = sdl_keymod_to_hid_modifiers(event->keysym.mod);
+
+    if (scancode < SC_HID_KEYBOARD_KEYS) {
+        // Pressed is true and released is false
+        kb->keys[scancode] = (event->type == SDL_KEYDOWN);
+        LOGV("keys[%02x] = %s", scancode,
+             kb->keys[scancode] ? "true" : "false");
+    }
+
+    hid_event->buffer[HID_KEYBOARD_INDEX_MODIFIER] = modifiers;
+
+    unsigned char *keys_buffer = &hid_event->buffer[HID_KEYBOARD_INDEX_KEYS];
+    // Re-calculate pressed keys every time
+    int keys_pressed_count = 0;
+    for (int i = 0; i < SC_HID_KEYBOARD_KEYS; ++i) {
+        if (kb->keys[i]) {
+            // USB HID protocol says that if keys exceeds report count, a
+            // phantom state should be reported
+            if (keys_pressed_count >= HID_KEYBOARD_MAX_KEYS) {
+                // Pantom state:
+                //  - Modifiers
+                //  - Reserved
+                //  - ErrorRollOver * HID_MAX_KEYS
+                memset(keys_buffer, HID_ERROR_ROLL_OVER, HID_KEYBOARD_MAX_KEYS);
+                goto end;
+            }
+
+            keys_buffer[keys_pressed_count] = i;
+            ++keys_pressed_count;
+        }
+    }
+
+end:
+    LOGV("hid keyboard: key %-4s scancode=%02x (%u) mod=%02x",
+         event->type == SDL_KEYDOWN ? "down" : "up", event->keysym.scancode,
+         event->keysym.scancode, modifiers);
+
+    return true;
+}
+
+
+static bool
+push_mod_lock_state(struct sc_hid_keyboard *kb, uint16_t sdl_mod) {
+    bool capslock = sdl_mod & KMOD_CAPS;
+    bool numlock = sdl_mod & KMOD_NUM;
+    if (!capslock && !numlock) {
+        // Nothing to do
+        return true;
+    }
+
+    struct sc_hid_event hid_event;
+    if (!sc_hid_keyboard_event_init(&hid_event)) {
+        LOGW("Could not initialize HID keyboard event");
+        return false;
+    }
+
+#define SC_SCANCODE_CAPSLOCK SDL_SCANCODE_CAPSLOCK
+#define SC_SCANCODE_NUMLOCK SDL_SCANCODE_NUMLOCKCLEAR
+    unsigned i = 0;
+    if (capslock) {
+        hid_event.buffer[HID_KEYBOARD_INDEX_KEYS + i] = SC_SCANCODE_CAPSLOCK;
+        ++i;
+    }
+    if (numlock) {
+        hid_event.buffer[HID_KEYBOARD_INDEX_KEYS + i] = SC_SCANCODE_NUMLOCK;
+        ++i;
+    }
+
+    if (!sc_aoa_push_hid_event(kb->aoa, &hid_event)) {
+        sc_hid_event_destroy(&hid_event);
+        LOGW("Could request HID event");
+        return false;
+    }
+
+    LOGD("HID keyboard state synchronized");
+
+    return true;
+}
+
+static void
+sc_key_processor_process_key(struct sc_key_processor *kp,
+                             const SDL_KeyboardEvent *event) {
+    if (event->repeat) {
+        // In USB HID protocol, key repeat is handled by the host (Android), so
+        // just ignore key repeat here.
+        return;
+    }
+
+    struct sc_hid_keyboard *kb = DOWNCAST(kp);
+
+    struct sc_hid_event hid_event;
+    // Not all keys are supported, just ignore unsupported keys
+    if (convert_hid_keyboard_event(kb, &hid_event, event)) {
+        if (!kb->mod_lock_synchronized) {
+            // Inject CAPSLOCK and/or NUMLOCK if necessary to synchronize
+            // keyboard state
+            if (push_mod_lock_state(kb, event->keysym.mod)) {
+                kb->mod_lock_synchronized = true;
+            }
+        }
+
+        SDL_Keycode keycode = event->keysym.sym;
+        bool down = event->type == SDL_KEYDOWN;
+        bool ctrl = event->keysym.mod & KMOD_CTRL;
+        bool shift = event->keysym.mod & KMOD_SHIFT;
+        if (ctrl && !shift && keycode == SDLK_v && down) {
+            // Ctrl+v is pressed, so clipboard synchronization has been
+            // requested. Wait a bit so that the clipboard is set before
+            // injecting Ctrl+v via HID, otherwise it would paste the old
+            // clipboard content.
+            hid_event.delay = SC_TICK_FROM_MS(5);
+        }
+
+        if (!sc_aoa_push_hid_event(kb->aoa, &hid_event)) {
+            sc_hid_event_destroy(&hid_event);
+            LOGW("Could request HID event");
+        }
+    }
+}
+
+static void
+sc_key_processor_process_text(struct sc_key_processor *kp,
+                              const SDL_TextInputEvent *event) {
+    (void) kp;
+    (void) event;
+
+    // Never forward text input via HID (all the keys are injected separately)
+}
+
+bool
+sc_hid_keyboard_init(struct sc_hid_keyboard *kb, struct sc_aoa *aoa) {
+    kb->aoa = aoa;
+
+    bool ok = sc_aoa_setup_hid(aoa, HID_KEYBOARD_ACCESSORY_ID,
+                               keyboard_report_desc,
+                               ARRAY_LEN(keyboard_report_desc));
+    if (!ok) {
+        LOGW("Register HID keyboard failed");
+        return false;
+    }
+
+    // Reset all states
+    memset(kb->keys, false, SC_HID_KEYBOARD_KEYS);
+
+    kb->mod_lock_synchronized = false;
+
+    static const struct sc_key_processor_ops ops = {
+        .process_key = sc_key_processor_process_key,
+        .process_text = sc_key_processor_process_text,
+    };
+
+    kb->key_processor.ops = &ops;
+
+    return true;
+}
+
+void
+sc_hid_keyboard_destroy(struct sc_hid_keyboard *kb) {
+    // Unregister HID keyboard so the soft keyboard shows again on Android
+    bool ok = sc_aoa_unregister_hid(kb->aoa, HID_KEYBOARD_ACCESSORY_ID);
+    if (!ok) {
+        LOGW("Could not unregister HID keyboard");
+    }
+}

app/src/hid_keyboard.h

@@ -0,0 +1,44 @@
+#ifndef SC_HID_KEYBOARD_H
+#define SC_HID_KEYBOARD_H
+
+#include "common.h"
+
+#include <stdbool.h>
+
+#include "aoa_hid.h"
+#include "trait/key_processor.h"
+
+// See "SDL2/SDL_scancode.h".
+// Maybe SDL_Keycode is used by most people, but SDL_Scancode is taken from USB
+// HID protocol.
+// 0x65 is Application, typically AT-101 Keyboard ends here.
+#define SC_HID_KEYBOARD_KEYS 0x66
+
+/**
+ * HID keyboard events are sequence-based, every time keyboard state changes
+ * it sends an array of currently pressed keys, the host is responsible for
+ * compare events and determine which key becomes pressed and which key becomes
+ * released. In order to convert SDL_KeyboardEvent to HID events, we first use
+ * an array of keys to save each keys' state. And when a SDL_KeyboardEvent was
+ * emitted, we updated our state, and then we use a loop to generate HID
+ * events. The sequence of array elements is unimportant and when too much keys
+ * pressed at the same time (more than report count), we should generate
+ * phantom state. Don't forget that modifiers should be updated too, even for
+ * phantom state.
+ */
+struct sc_hid_keyboard {
+    struct sc_key_processor key_processor; // key processor trait
+
+    struct sc_aoa *aoa;
+    bool keys[SC_HID_KEYBOARD_KEYS];
+
+    bool mod_lock_synchronized;
+};
+
+bool
+sc_hid_keyboard_init(struct sc_hid_keyboard *kb, struct sc_aoa *aoa);
+
+void
+sc_hid_keyboard_destroy(struct sc_hid_keyboard *kb);
+
+#endif

app/src/icon.c

@@ -0,0 +1,290 @@
+#include "icon.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <libavformat/avformat.h>
+#include <libavutil/pixdesc.h>
+#include <libavutil/pixfmt.h>
+
+#include "config.h"
+#include "compat.h"
+#include "util/file.h"
+#include "util/log.h"
+#include "util/str.h"
+
+#define SCRCPY_PORTABLE_ICON_FILENAME "icon.png"
+#define SCRCPY_DEFAULT_ICON_PATH \
+    PREFIX "/share/icons/hicolor/256x256/apps/scrcpy.png"
+
+static char *
+get_icon_path(void) {
+#ifdef __WINDOWS__
+    const wchar_t *icon_path_env = _wgetenv(L"SCRCPY_ICON_PATH");
+#else
+    const char *icon_path_env = getenv("SCRCPY_ICON_PATH");
+#endif
+    if (icon_path_env) {
+        // if the envvar is set, use it
+#ifdef __WINDOWS__
+        char *icon_path = sc_str_from_wchars(icon_path_env);
+#else
+        char *icon_path = strdup(icon_path_env);
+#endif
+        if (!icon_path) {
+            LOGE("Could not allocate memory");
+            return NULL;
+        }
+        LOGD("Using SCRCPY_ICON_PATH: %s", icon_path);
+        return icon_path;
+    }
+
+#ifndef PORTABLE
+    LOGD("Using icon: " SCRCPY_DEFAULT_ICON_PATH);
+    char *icon_path = strdup(SCRCPY_DEFAULT_ICON_PATH);
+    if (!icon_path) {
+        LOGE("Could not allocate memory");
+        return NULL;
+    }
+#else
+    char *icon_path = sc_file_get_local_path(SCRCPY_PORTABLE_ICON_FILENAME);
+    if (!icon_path) {
+        LOGE("Could not get icon path");
+        return NULL;
+    }
+    LOGD("Using icon (portable): %s", icon_path);
+#endif
+
+    return icon_path;
+}
+
+static AVFrame *
+decode_image(const char *path) {
+    AVFrame *result = NULL;
+
+    AVFormatContext *ctx = avformat_alloc_context();
+    if (!ctx) {
+        LOGE("Could not allocate image decoder context");
+        return NULL;
+    }
+
+    if (avformat_open_input(&ctx, path, NULL, NULL) < 0) {
+        LOGE("Could not open image codec: %s", path);
+        goto free_ctx;
+    }
+
+    if (avformat_find_stream_info(ctx, NULL) < 0) {
+        LOGE("Could not find image stream info");
+        goto close_input;
+    }
+
+    int stream = av_find_best_stream(ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
+    if (stream < 0 ) {
+        LOGE("Could not find best image stream");
+        goto close_input;
+    }
+
+    AVCodecParameters *params = ctx->streams[stream]->codecpar;
+
+    AVCodec *codec = avcodec_find_decoder(params->codec_id);
+    if (!codec) {
+        LOGE("Could not find image decoder");
+        goto close_input;
+    }
+
+    AVCodecContext *codec_ctx = avcodec_alloc_context3(codec);
+    if (!codec_ctx) {
+        LOGE("Could not allocate codec context");
+        goto close_input;
+    }
+
+    if (avcodec_parameters_to_context(codec_ctx, params) < 0) {
+        LOGE("Could not fill codec context");
+        goto free_codec_ctx;
+    }
+
+    if (avcodec_open2(codec_ctx, codec, NULL) < 0) {
+        LOGE("Could not open image codec");
+        goto free_codec_ctx;
+    }
+
+    AVFrame *frame = av_frame_alloc();
+    if (!frame) {
+        LOGE("Could not allocate frame");
+        goto close_codec;
+    }
+
+    AVPacket *packet = av_packet_alloc();
+    if (!packet) {
+        LOGE("Could not allocate packet");
+        av_frame_free(&frame);
+        goto close_codec;
+    }
+
+    if (av_read_frame(ctx, packet) < 0) {
+        LOGE("Could not read frame");
+        av_packet_free(&packet);
+        av_frame_free(&frame);
+        goto close_codec;
+    }
+
+    int ret;
+    if ((ret = avcodec_send_packet(codec_ctx, packet)) < 0) {
+        LOGE("Could not send icon packet: %d", ret);
+        av_packet_free(&packet);
+        av_frame_free(&frame);
+        goto close_codec;
+    }
+
+    if ((ret = avcodec_receive_frame(codec_ctx, frame)) != 0) {
+        LOGE("Could not receive icon frame: %d", ret);
+        av_packet_free(&packet);
+        av_frame_free(&frame);
+        goto close_codec;
+    }
+
+    av_packet_free(&packet);
+
+    result = frame;
+
+close_codec:
+    avcodec_close(codec_ctx);
+free_codec_ctx:
+    avcodec_free_context(&codec_ctx);
+close_input:
+    avformat_close_input(&ctx);
+free_ctx:
+    avformat_free_context(ctx);
+
+    return result;
+}
+
+#if !SDL_VERSION_ATLEAST(2, 0, 10)
+// SDL_PixelFormatEnum has been introduced in SDL 2.0.10. Use int for older SDL
+// versions.
+typedef int SDL_PixelFormatEnum;
+#endif
+
+static SDL_PixelFormatEnum
+to_sdl_pixel_format(enum AVPixelFormat fmt) {
+    switch (fmt) {
+        case AV_PIX_FMT_RGB24: return SDL_PIXELFORMAT_RGB24;
+        case AV_PIX_FMT_BGR24: return SDL_PIXELFORMAT_BGR24;
+        case AV_PIX_FMT_ARGB: return SDL_PIXELFORMAT_ARGB32;
+        case AV_PIX_FMT_RGBA: return SDL_PIXELFORMAT_RGBA32;
+        case AV_PIX_FMT_ABGR: return SDL_PIXELFORMAT_ABGR32;
+        case AV_PIX_FMT_BGRA: return SDL_PIXELFORMAT_BGRA32;
+        case AV_PIX_FMT_RGB565BE: return SDL_PIXELFORMAT_RGB565;
+        case AV_PIX_FMT_RGB555BE: return SDL_PIXELFORMAT_RGB555;
+        case AV_PIX_FMT_BGR565BE: return SDL_PIXELFORMAT_BGR565;
+        case AV_PIX_FMT_BGR555BE: return SDL_PIXELFORMAT_BGR555;
+        case AV_PIX_FMT_RGB444BE: return SDL_PIXELFORMAT_RGB444;
+#if SDL_VERSION_ATLEAST(2, 0, 12)
+        case AV_PIX_FMT_BGR444BE: return SDL_PIXELFORMAT_BGR444;
+#endif
+        case AV_PIX_FMT_PAL8: return SDL_PIXELFORMAT_INDEX8;
+        default: return SDL_PIXELFORMAT_UNKNOWN;
+    }
+}
+
+static SDL_Surface *
+load_from_path(const char *path) {
+    AVFrame *frame = decode_image(path);
+    if (!frame) {
+        return NULL;
+    }
+
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
+    if (!desc) {
+        LOGE("Could not get icon format descriptor");
+        goto error;
+    }
+
+    bool is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
+    if (!is_packed) {
+        LOGE("Could not load non-packed icon");
+        goto error;
+    }
+
+    SDL_PixelFormatEnum format = to_sdl_pixel_format(frame->format);
+    if (format == SDL_PIXELFORMAT_UNKNOWN) {
+        LOGE("Unsupported icon pixel format: %s (%d)", desc->name,
+                                                       frame->format);
+        goto error;
+    }
+
+    int bits_per_pixel = av_get_bits_per_pixel(desc);
+    SDL_Surface *surface =
+        SDL_CreateRGBSurfaceWithFormatFrom(frame->data[0],
+                                           frame->width, frame->height,
+                                           bits_per_pixel,
+                                           frame->linesize[0],
+                                           format);
+
+    if (!surface) {
+        LOGE("Could not create icon surface");
+        goto error;
+    }
+
+    if (frame->format == AV_PIX_FMT_PAL8) {
+        // Initialize the SDL palette
+        uint8_t *data = frame->data[1];
+        SDL_Color colors[256];
+        for (int i = 0; i < 256; ++i) {
+            SDL_Color *color = &colors[i];
+
+            // The palette is transported in AVFrame.data[1], is 1024 bytes
+            // long (256 4-byte entries) and is formatted the same as in
+            // AV_PIX_FMT_RGB32 described above (i.e., it is also
+            // endian-specific).
+            // <https://ffmpeg.org/doxygen/4.1/pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5>
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+            color->a = data[i * 4];
+            color->r = data[i * 4 + 1];
+            color->g = data[i * 4 + 2];
+            color->b = data[i * 4 + 3];
+#else
+            color->a = data[i * 4 + 3];
+            color->r = data[i * 4 + 2];
+            color->g = data[i * 4 + 1];
+            color->b = data[i * 4];
+#endif
+        }
+
+        SDL_Palette *palette = surface->format->palette;
+        assert(palette);
+        int ret = SDL_SetPaletteColors(palette, colors, 0, 256);
+        if (ret) {
+            LOGE("Could not set palette colors");
+            SDL_FreeSurface(surface);
+            goto error;
+        }
+    }
+
+    surface->userdata = frame; // frame owns the data
+
+    return surface;
+
+error:
+    av_frame_free(&frame);
+    return NULL;
+}
+
+SDL_Surface *
+scrcpy_icon_load() {
+    char *icon_path = get_icon_path();
+    if (!icon_path) {
+        return NULL;
+    }
+
+    SDL_Surface *icon = load_from_path(icon_path);
+    free(icon_path);
+    return icon;
+}
+
+void
+scrcpy_icon_destroy(SDL_Surface *icon) {
+    AVFrame *frame = icon->userdata;
+    assert(frame);
+    av_frame_free(&frame);
+    SDL_FreeSurface(icon);
+}

app/src/icon.h

@@ -0,0 +1,16 @@
+#ifndef ICON_H
+#define ICON_H
+
+#include "common.h"
+
+#include <stdbool.h>
+#include <SDL2/SDL.h>
+#include <libavformat/avformat.h>
+
+SDL_Surface *
+scrcpy_icon_load(void);
+
+void
+scrcpy_icon_destroy(SDL_Surface *icon);
+
+#endif

app/src/icon.xpm

@@ -1,53 +0,0 @@
-/* XPM */
-static char * icon_xpm[] = {
-"48 48 2 1",
-" 	c None",
-".	c #96C13E",
-"              ..                ..              ",
-"              ...              ...              ",
-"               ...   ......   ...               ",
-"                ................                ",
-"                 ..............                 ",
-"                ................                ",
-"               ..................               ",
-"              ....................              ",
-"             .....  ........  .....             ",
-"             .....  ........  .....             ",
-"             ......................             ",
-"            ........................            ",
-"            ........................            ",
-"            ........................            ",
-"                                                ",
-"                                                ",
-"     ....   ........................   ....     ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"    ......  ........................  ......    ",
-"     ....   ........................   ....     ",
-"            ........................            ",
-"             ......................             ",
-"                ......    ......                ",
-"                ......    ......                ",
-"                ......    ......                ",
-"                ......    ......                ",
-"                ......    ......                ",
-"                ......    ......                ",
-"                ......    ......                ",
-"                ......    ......                ",
-"                ......    ......                ",
-"                 ....      ....                 "};

app/src/input_manager.c

@@ -3,9 +3,6 @@
 #include <assert.h>
 #include <SDL2/SDL_keycode.h>
 
-#include "config.h"
-#include "event_converter.h"
-#include "util/lock.h"
 #include "util/log.h"
 
 static const int ACTION_DOWN = 1;
@@ -54,12 +51,19 @@ is_shortcut_mod(struct input_manager *im, uint16_t sdl_mod) {
 }
 
 void
-input_manager_init(struct input_manager *im,
-                   const struct scrcpy_options *options)
-{
+input_manager_init(struct input_manager *im, struct controller *controller,
+                   struct screen *screen, struct sc_key_processor *kp,
+                   struct sc_mouse_processor *mp,
+                   const struct scrcpy_options *options) {
+    assert(!options->control || (kp && kp->ops));
+    assert(!options->control || (mp && mp->ops));
+
+    im->controller = controller;
+    im->screen = screen;
+    im->kp = kp;
+    im->mp = mp;
+
     im->control = options->control;
-    im->forward_key_repeat = options->forward_key_repeat;
-    im->prefer_text = options->prefer_text;
     im->forward_all_clicks = options->forward_all_clicks;
     im->legacy_paste = options->legacy_paste;
 
@@ -74,6 +78,10 @@ input_manager_init(struct input_manager *im,
     im->sdl_shortcut_mods.count = shortcut_mods->count;
 
     im->vfinger_down = false;
+
+    im->last_keycode = SDLK_UNKNOWN;
+    im->last_mod = 0;
+    im->key_repeat = 0;
 }
 
 static void
@@ -148,13 +156,25 @@ action_cut(struct controller *controller, int actions) {
 }
 
 // turn the screen on if it was off, press BACK otherwise
+// If the screen is off, it is turned on only on ACTION_DOWN
 static void
-press_back_or_turn_screen_on(struct controller *controller) {
+press_back_or_turn_screen_on(struct controller *controller, int actions) {
     struct control_msg msg;
     msg.type = CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON;
 
-    if (!controller_push_msg(controller, &msg)) {
-        LOGW("Could not request 'press back or turn screen on'");
+    if (actions & ACTION_DOWN) {
+        msg.back_or_screen_on.action = AKEY_EVENT_ACTION_DOWN;
+        if (!controller_push_msg(controller, &msg)) {
+            LOGW("Could not request 'press back or turn screen on'");
+            return;
+        }
+    }
+
+    if (actions & ACTION_UP) {
+        msg.back_or_screen_on.action = AKEY_EVENT_ACTION_UP;
+        if (!controller_push_msg(controller, &msg)) {
+            LOGW("Could not request 'press back or turn screen on'");
+        }
     }
 }
 
@@ -169,9 +189,19 @@ expand_notification_panel(struct controller *controller) {
 }
 
 static void
-collapse_notification_panel(struct controller *controller) {
+expand_settings_panel(struct controller *controller) {
     struct control_msg msg;
-    msg.type = CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL;
+    msg.type = CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL;
+
+    if (!controller_push_msg(controller, &msg)) {
+        LOGW("Could not request 'expand settings panel'");
+    }
+}
+
+static void
+collapse_panels(struct controller *controller) {
+    struct control_msg msg;
+    msg.type = CONTROL_MSG_TYPE_COLLAPSE_PANELS;
 
     if (!controller_push_msg(controller, &msg)) {
         LOGW("Could not request 'collapse notification panel'");
@@ -191,13 +221,20 @@ set_device_clipboard(struct controller *controller, bool paste) {
         return;
     }
 
+    char *text_dup = strdup(text);
+    SDL_free(text);
+    if (!text_dup) {
+        LOGW("Could not strdup input text");
+        return;
+    }
+
     struct control_msg msg;
     msg.type = CONTROL_MSG_TYPE_SET_CLIPBOARD;
-    msg.set_clipboard.text = text;
+    msg.set_clipboard.text = text_dup;
     msg.set_clipboard.paste = paste;
 
     if (!controller_push_msg(controller, &msg)) {
-        SDL_free(text);
+        free(text_dup);
         LOGW("Could not request 'set device clipboard'");
     }
 }
@@ -243,11 +280,18 @@ clipboard_paste(struct controller *controller) {
         return;
     }
 
+    char *text_dup = strdup(text);
+    SDL_free(text);
+    if (!text_dup) {
+        LOGW("Could not strdup input text");
+        return;
+    }
+
     struct control_msg msg;
     msg.type = CONTROL_MSG_TYPE_INJECT_TEXT;
-    msg.inject_text.text = text;
+    msg.inject_text.text = text_dup;
     if (!controller_push_msg(controller, &msg)) {
-        SDL_free(text);
+        free(text_dup);
         LOGW("Could not request 'paste clipboard'");
     }
 }
@@ -274,39 +318,21 @@ rotate_client_right(struct screen *screen) {
     screen_set_rotation(screen, new_rotation);
 }
 
-void
+static void
 input_manager_process_text_input(struct input_manager *im,
                                  const SDL_TextInputEvent *event) {
     if (is_shortcut_mod(im, SDL_GetModState())) {
         // A shortcut must never generate text events
         return;
     }
-    if (!im->prefer_text) {
-        char c = event->text[0];
-        if (isalpha(c) || c == ' ') {
-            assert(event->text[1] == '\0');
-            // letters and space are handled as raw key event
-            return;
-        }
-    }
 
-    struct control_msg msg;
-    msg.type = CONTROL_MSG_TYPE_INJECT_TEXT;
-    msg.inject_text.text = SDL_strdup(event->text);
-    if (!msg.inject_text.text) {
-        LOGW("Could not strdup input text");
-        return;
-    }
-    if (!controller_push_msg(im->controller, &msg)) {
-        SDL_free(msg.inject_text.text);
-        LOGW("Could not request 'inject text'");
-    }
+    im->kp->ops->process_text(im->kp, event);
 }
 
 static bool
 simulate_virtual_finger(struct input_manager *im,
                         enum android_motionevent_action action,
-                        struct point point) {
+                        struct sc_point point) {
     bool up = action == AMOTION_EVENT_ACTION_UP;
 
     struct control_msg msg;
@@ -326,50 +352,40 @@ simulate_virtual_finger(struct input_manager *im,
     return true;
 }
 
-static struct point
-inverse_point(struct point point, struct size size) {
+static struct sc_point
+inverse_point(struct sc_point point, struct sc_size size) {
     point.x = size.width - point.x;
     point.y = size.height - point.y;
     return point;
 }
 
-static bool
-convert_input_key(const SDL_KeyboardEvent *from, struct control_msg *to,
-                  bool prefer_text, uint32_t repeat) {
-    to->type = CONTROL_MSG_TYPE_INJECT_KEYCODE;
-
-    if (!convert_keycode_action(from->type, &to->inject_keycode.action)) {
-        return false;
-    }
-
-    uint16_t mod = from->keysym.mod;
-    if (!convert_keycode(from->keysym.sym, &to->inject_keycode.keycode, mod,
-                         prefer_text)) {
-        return false;
-    }
-
-    to->inject_keycode.repeat = repeat;
-    to->inject_keycode.metastate = convert_meta_state(mod);
-
-    return true;
-}
-
-void
+static void
 input_manager_process_key(struct input_manager *im,
                           const SDL_KeyboardEvent *event) {
     // control: indicates the state of the command-line option --no-control
     bool control = im->control;
 
-    bool smod = is_shortcut_mod(im, event->keysym.mod);
-
     struct controller *controller = im->controller;
 
     SDL_Keycode keycode = event->keysym.sym;
+    uint16_t mod = event->keysym.mod;
     bool down = event->type == SDL_KEYDOWN;
     bool ctrl = event->keysym.mod & KMOD_CTRL;
     bool shift = event->keysym.mod & KMOD_SHIFT;
     bool repeat = event->repeat;
 
+    bool smod = is_shortcut_mod(im, mod);
+
+    if (down && !repeat) {
+        if (keycode == im->last_keycode && mod == im->last_mod) {
+            ++im->key_repeat;
+        } else {
+            im->key_repeat = 0;
+            im->last_keycode = keycode;
+            im->last_mod = mod;
+        }
+    }
+
     // The shortcut modifier is pressed
     if (smod) {
         int action = down ? ACTION_DOWN : ACTION_UP;
@@ -468,17 +484,17 @@ input_manager_process_key(struct input_manager *im,
                 return;
             case SDLK_i:
                 if (!shift && !repeat && down) {
-                    struct fps_counter *fps_counter =
-                        im->video_buffer->fps_counter;
-                    switch_fps_counter_state(fps_counter);
+                    switch_fps_counter_state(&im->screen->fps_counter);
                 }
                 return;
             case SDLK_n:
                 if (control && !repeat && down) {
                     if (shift) {
-                        collapse_notification_panel(controller);
-                    } else {
+                        collapse_panels(controller);
+                    } else if (im->key_repeat == 0) {
                         expand_notification_panel(controller);
+                    } else {
+                        expand_settings_panel(controller);
                     }
                 }
                 return;
@@ -496,15 +512,6 @@ input_manager_process_key(struct input_manager *im,
         return;
     }
 
-    if (event->repeat) {
-        if (!im->forward_key_repeat) {
-            return;
-        }
-        ++im->repeat;
-    } else {
-        im->repeat = 0;
-    }
-
     if (ctrl && !shift && keycode == SDLK_v && down && !repeat) {
         if (im->legacy_paste) {
             // inject the text as input events
@@ -516,116 +523,43 @@ input_manager_process_key(struct input_manager *im,
         set_device_clipboard(controller, false);
     }
 
-    struct control_msg msg;
-    if (convert_input_key(event, &msg, im->prefer_text, im->repeat)) {
-        if (!controller_push_msg(controller, &msg)) {
-            LOGW("Could not request 'inject keycode'");
-        }
-    }
+    im->kp->ops->process_key(im->kp, event);
 }
 
-static bool
-convert_mouse_motion(const SDL_MouseMotionEvent *from, struct screen *screen,
-                     struct control_msg *to) {
-    to->type = CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT;
-    to->inject_touch_event.action = AMOTION_EVENT_ACTION_MOVE;
-    to->inject_touch_event.pointer_id = POINTER_ID_MOUSE;
-    to->inject_touch_event.position.screen_size = screen->frame_size;
-    to->inject_touch_event.position.point =
-        screen_convert_window_to_frame_coords(screen, from->x, from->y);
-    to->inject_touch_event.pressure = 1.f;
-    to->inject_touch_event.buttons = convert_mouse_buttons(from->state);
-
-    return true;
-}
-
-void
+static void
 input_manager_process_mouse_motion(struct input_manager *im,
                                    const SDL_MouseMotionEvent *event) {
-    if (!event->state) {
-        // do not send motion events when no button is pressed
+    uint32_t mask = SDL_BUTTON_LMASK;
+    if (im->forward_all_clicks) {
+        mask |= SDL_BUTTON_MMASK | SDL_BUTTON_RMASK;
+    }
+    if (!(event->state & mask)) {
+        // do not send motion events when no click is pressed
         return;
     }
     if (event->which == SDL_TOUCH_MOUSEID) {
         // simulated from touch events, so it's a duplicate
         return;
     }
-    struct control_msg msg;
-    if (!convert_mouse_motion(event, im->screen, &msg)) {
-        return;
-    }
 
-    if (!controller_push_msg(im->controller, &msg)) {
-        LOGW("Could not request 'inject mouse motion event'");
-    }
+    im->mp->ops->process_mouse_motion(im->mp, event);
 
     if (im->vfinger_down) {
-        struct point mouse = msg.inject_touch_event.position.point;
-        struct point vfinger = inverse_point(mouse, im->screen->frame_size);
+        struct sc_point mouse =
+            screen_convert_window_to_frame_coords(im->screen, event->x,
+                                                  event->y);
+        struct sc_point vfinger = inverse_point(mouse, im->screen->frame_size);
         simulate_virtual_finger(im, AMOTION_EVENT_ACTION_MOVE, vfinger);
     }
 }
 
-static bool
-convert_touch(const SDL_TouchFingerEvent *from, struct screen *screen,
-              struct control_msg *to) {
-    to->type = CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT;
-
-    if (!convert_touch_action(from->type, &to->inject_touch_event.action)) {
-        return false;
-    }
-
-    to->inject_touch_event.pointer_id = from->fingerId;
-    to->inject_touch_event.position.screen_size = screen->frame_size;
-
-    int dw;
-    int dh;
-    SDL_GL_GetDrawableSize(screen->window, &dw, &dh);
-
-    // SDL touch event coordinates are normalized in the range [0; 1]
-    int32_t x = from->x * dw;
-    int32_t y = from->y * dh;
-    to->inject_touch_event.position.point =
-        screen_convert_drawable_to_frame_coords(screen, x, y);
-
-    to->inject_touch_event.pressure = from->pressure;
-    to->inject_touch_event.buttons = 0;
-    return true;
-}
-
-void
+static void
 input_manager_process_touch(struct input_manager *im,
                             const SDL_TouchFingerEvent *event) {
-    struct control_msg msg;
-    if (convert_touch(event, im->screen, &msg)) {
-        if (!controller_push_msg(im->controller, &msg)) {
-            LOGW("Could not request 'inject touch event'");
-        }
-    }
+    im->mp->ops->process_touch(im->mp, event);
 }
 
-static bool
-convert_mouse_button(const SDL_MouseButtonEvent *from, struct screen *screen,
-                     struct control_msg *to) {
-    to->type = CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT;
-
-    if (!convert_mouse_action(from->type, &to->inject_touch_event.action)) {
-        return false;
-    }
-
-    to->inject_touch_event.pointer_id = POINTER_ID_MOUSE;
-    to->inject_touch_event.position.screen_size = screen->frame_size;
-    to->inject_touch_event.position.point =
-        screen_convert_window_to_frame_coords(screen, from->x, from->y);
-    to->inject_touch_event.pressure =
-        from->type == SDL_MOUSEBUTTONDOWN ? 1.f : 0.f;
-    to->inject_touch_event.buttons =
-        convert_mouse_buttons(SDL_BUTTON(from->button));
-
-    return true;
-}
-
-void
+static void
 input_manager_process_mouse_button(struct input_manager *im,
                                    const SDL_MouseButtonEvent *event) {
     bool control = im->control;
@@ -636,13 +570,27 @@ input_manager_process_mouse_button(struct input_manager *im,
     }
 
     bool down = event->type == SDL_MOUSEBUTTONDOWN;
-    if (!im->forward_all_clicks && down) {
+    if (!im->forward_all_clicks) {
+        int action = down ? ACTION_DOWN : ACTION_UP;
+
+        if (control && event->button == SDL_BUTTON_X1) {
+            action_app_switch(im->controller, action);
+            return;
+        }
+        if (control && event->button == SDL_BUTTON_X2 && down) {
+            if (event->clicks < 2) {
+                expand_notification_panel(im->controller);
+            } else {
+                expand_settings_panel(im->controller);
+            }
+            return;
+        }
         if (control && event->button == SDL_BUTTON_RIGHT) {
-            press_back_or_turn_screen_on(im->controller);
+            press_back_or_turn_screen_on(im->controller, action);
             return;
         }
         if (control && event->button == SDL_BUTTON_MIDDLE) {
-            action_home(im->controller, ACTION_DOWN | ACTION_UP);
+            action_home(im->controller, action);
             return;
         }
 
@@ -655,7 +603,9 @@ input_manager_process_mouse_button(struct input_manager *im,
             bool outside = x < r->x || x >= r->x + r->w
                         || y < r->y || y >= r->y + r->h;
             if (outside) {
-                screen_resize_to_fit(im->screen);
+                if (down) {
+                    screen_resize_to_fit(im->screen);
+                }
                 return;
             }
         }
@@ -666,15 +616,7 @@ input_manager_process_mouse_button(struct input_manager *im,
         return;
     }
 
-    struct control_msg msg;
-    if (!convert_mouse_button(event, im->screen, &msg)) {
-        return;
-    }
-
-    if (!controller_push_msg(im->controller, &msg)) {
-        LOGW("Could not request 'inject mouse button event'");
-        return;
-    }
+    im->mp->ops->process_mouse_button(im->mp, event);
 
     // Pinch-to-zoom simulation.
     //
@@ -688,8 +630,10 @@ input_manager_process_mouse_button(struct input_manager *im,
 #define CTRL_PRESSED (SDL_GetModState() & (KMOD_LCTRL | KMOD_RCTRL))
     if ((down && !im->vfinger_down && CTRL_PRESSED)
             || (!down && im->vfinger_down)) {
-        struct point mouse = msg.inject_touch_event.position.point;
-        struct point vfinger = inverse_point(mouse, im->screen->frame_size);
+        struct sc_point mouse =
+            screen_convert_window_to_frame_coords(im->screen, event->x,
+                                                              event->y);
+        struct sc_point vfinger = inverse_point(mouse, im->screen->frame_size);
         enum android_motionevent_action action = down
                                                ? AMOTION_EVENT_ACTION_DOWN
                                                : AMOTION_EVENT_ACTION_UP;
@@ -700,37 +644,51 @@ input_manager_process_mouse_button(struct input_manager *im,
     }
 }
 
-static bool
-convert_mouse_wheel(const SDL_MouseWheelEvent *from, struct screen *screen,
-                    struct control_msg *to) {
-
-    // mouse_x and mouse_y are expressed in pixels relative to the window
-    int mouse_x;
-    int mouse_y;
-    SDL_GetMouseState(&mouse_x, &mouse_y);
-
-    struct position position = {
-        .screen_size = screen->frame_size,
-        .point = screen_convert_window_to_frame_coords(screen,
-                                                       mouse_x, mouse_y),
-    };
-
-    to->type = CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT;
-
-    to->inject_scroll_event.position = position;
-    to->inject_scroll_event.hscroll = from->x;
-    to->inject_scroll_event.vscroll = from->y;
-
-    return true;
-}
-
-void
+static void
 input_manager_process_mouse_wheel(struct input_manager *im,
                                   const SDL_MouseWheelEvent *event) {
-    struct control_msg msg;
-    if (convert_mouse_wheel(event, im->screen, &msg)) {
-        if (!controller_push_msg(im->controller, &msg)) {
-            LOGW("Could not request 'inject mouse wheel event'");
-        }
-    }
+    im->mp->ops->process_mouse_wheel(im->mp, event);
+}
+
+bool
+input_manager_handle_event(struct input_manager *im, SDL_Event *event) {
+    switch (event->type) {
+        case SDL_TEXTINPUT:
+            if (!im->control) {
+                return true;
+            }
+            input_manager_process_text_input(im, &event->text);
+            return true;
+        case SDL_KEYDOWN:
+        case SDL_KEYUP:
+            // some key events do not interact with the device, so process the
+            // event even if control is disabled
+            input_manager_process_key(im, &event->key);
+            return true;
+        case SDL_MOUSEMOTION:
+            if (!im->control) {
+                break;
+            }
+            input_manager_process_mouse_motion(im, &event->motion);
+            return true;
+        case SDL_MOUSEWHEEL:
+            if (!im->control) {
+                break;
+            }
+            input_manager_process_mouse_wheel(im, &event->wheel);
+            return true;
+        case SDL_MOUSEBUTTONDOWN:
+        case SDL_MOUSEBUTTONUP:
+            // some mouse events do not interact with the device, so process
+            // the event even if control is disabled
+            input_manager_process_mouse_button(im, &event->button);
+            return true;
+        case SDL_FINGERMOTION:
+        case SDL_FINGERDOWN:
+        case SDL_FINGERUP:
+            input_manager_process_touch(im, &event->tfinger);
+            return true;
+    }
+
+    return false;
 }

app/src/input_manager.h

@@ -1,30 +1,27 @@
 #ifndef INPUTMANAGER_H
 #define INPUTMANAGER_H
 
+#include "common.h"
+
 #include <stdbool.h>
 
 #include <SDL2/SDL.h>
 
-#include "config.h"
-#include "common.h"
 #include "controller.h"
 #include "fps_counter.h"
-#include "scrcpy.h"
+#include "options.h"
 #include "screen.h"
-#include "video_buffer.h"
+#include "trait/key_processor.h"
+#include "trait/mouse_processor.h"
 
 struct input_manager {
     struct controller *controller;
-    struct video_buffer *video_buffer;
     struct screen *screen;
 
-    // SDL reports repeated events as a boolean, but Android expects the actual
-    // number of repetitions. This variable keeps track of the count.
-    unsigned repeat;
+    struct sc_key_processor *kp;
+    struct sc_mouse_processor *mp;
 
     bool control;
-    bool forward_key_repeat;
-    bool prefer_text;
     bool forward_all_clicks;
     bool legacy_paste;
 
@@ -34,34 +31,22 @@ struct input_manager {
     } sdl_shortcut_mods;
 
     bool vfinger_down;
+
+    // Tracks the number of identical consecutive shortcut key down events.
+    // Not to be confused with event->repeat, which counts the number of
+    // system-generated repeated key presses.
+    unsigned key_repeat;
+    SDL_Keycode last_keycode;
+    uint16_t last_mod;
 };
 
 void
-input_manager_init(struct input_manager *im,
+input_manager_init(struct input_manager *im, struct controller *controller,
+                   struct screen *screen, struct sc_key_processor *kp,
+                   struct sc_mouse_processor *mp,
                    const struct scrcpy_options *options);
 
-void
-input_manager_process_text_input(struct input_manager *im,
-                                 const SDL_TextInputEvent *event);
-
-void
-input_manager_process_key(struct input_manager *im,
-                          const SDL_KeyboardEvent *event);
-
-void
-input_manager_process_mouse_motion(struct input_manager *im,
-                                   const SDL_MouseMotionEvent *event);
-
-void
-input_manager_process_touch(struct input_manager *im,
-                            const SDL_TouchFingerEvent *event);
-
-void
-input_manager_process_mouse_button(struct input_manager *im,
-                                   const SDL_MouseButtonEvent *event);
-
-void
-input_manager_process_mouse_wheel(struct input_manager *im,
-                                  const SDL_MouseWheelEvent *event);
+bool
+input_manager_handle_event(struct input_manager *im, SDL_Event *event);
 
 #endif

app/src/keyboard_inject.c

@@ -1,11 +1,20 @@
-#include "event_converter.h"
+#include "keyboard_inject.h"
 
-#include "config.h"
+#include <assert.h>
+#include <SDL2/SDL_events.h>
+
+#include "android/input.h"
+#include "control_msg.h"
+#include "controller.h"
+#include "util/log.h"
+
+/** Downcast key processor to sc_keyboard_inject */
+#define DOWNCAST(KP) \
+    container_of(KP, struct sc_keyboard_inject, key_processor)
 
 #define MAP(FROM, TO) case FROM: *to = TO; return true
 #define FAIL default: return false
-
-bool
+static bool
 convert_keycode_action(SDL_EventType from, enum android_keyevent_action *to) {
     switch (from) {
         MAP(SDL_KEYDOWN, AKEY_EVENT_ACTION_DOWN);
@@ -14,67 +23,7 @@ convert_keycode_action(SDL_EventType from, enum android_keyevent_action *to) {
     }
 }
 
-static enum android_metastate
-autocomplete_metastate(enum android_metastate metastate) {
-    // fill dependant flags
-    if (metastate & (AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_RIGHT_ON)) {
-        metastate |= AMETA_SHIFT_ON;
-    }
-    if (metastate & (AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON)) {
-        metastate |= AMETA_CTRL_ON;
-    }
-    if (metastate & (AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON)) {
-        metastate |= AMETA_ALT_ON;
-    }
-    if (metastate & (AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON)) {
-        metastate |= AMETA_META_ON;
-    }
-
-    return metastate;
-}
-
-enum android_metastate
-convert_meta_state(SDL_Keymod mod) {
-    enum android_metastate metastate = 0;
-    if (mod & KMOD_LSHIFT) {
-        metastate |= AMETA_SHIFT_LEFT_ON;
-    }
-    if (mod & KMOD_RSHIFT) {
-        metastate |= AMETA_SHIFT_RIGHT_ON;
-    }
-    if (mod & KMOD_LCTRL) {
-        metastate |= AMETA_CTRL_LEFT_ON;
-    }
-    if (mod & KMOD_RCTRL) {
-        metastate |= AMETA_CTRL_RIGHT_ON;
-    }
-    if (mod & KMOD_LALT) {
-        metastate |= AMETA_ALT_LEFT_ON;
-    }
-    if (mod & KMOD_RALT) {
-        metastate |= AMETA_ALT_RIGHT_ON;
-    }
-    if (mod & KMOD_LGUI) { // Windows key
-        metastate |= AMETA_META_LEFT_ON;
-    }
-    if (mod & KMOD_RGUI) { // Windows key
-        metastate |= AMETA_META_RIGHT_ON;
-    }
-    if (mod & KMOD_NUM) {
-        metastate |= AMETA_NUM_LOCK_ON;
-    }
-    if (mod & KMOD_CAPS) {
-        metastate |= AMETA_CAPS_LOCK_ON;
-    }
-    if (mod & KMOD_MODE) { // Alt Gr
-        // no mapping?
-    }
-
-    // fill the dependent fields
-    return autocomplete_metastate(metastate);
-}
-
-bool
+static bool
 convert_keycode(SDL_Keycode from, enum android_keycode *to, uint16_t mod,
                 bool prefer_text) {
     switch (from) {
@@ -156,42 +105,150 @@ convert_keycode(SDL_Keycode from, enum android_keycode *to, uint16_t mod,
     }
 }
 
-enum android_motionevent_buttons
-convert_mouse_buttons(uint32_t state) {
-    enum android_motionevent_buttons buttons = 0;
-    if (state & SDL_BUTTON_LMASK) {
-        buttons |= AMOTION_EVENT_BUTTON_PRIMARY;
+static enum android_metastate
+autocomplete_metastate(enum android_metastate metastate) {
+    // fill dependent flags
+    if (metastate & (AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_RIGHT_ON)) {
+        metastate |= AMETA_SHIFT_ON;
     }
-    if (state & SDL_BUTTON_RMASK) {
-        buttons |= AMOTION_EVENT_BUTTON_SECONDARY;
+    if (metastate & (AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON)) {
+        metastate |= AMETA_CTRL_ON;
     }
-    if (state & SDL_BUTTON_MMASK) {
-        buttons |= AMOTION_EVENT_BUTTON_TERTIARY;
+    if (metastate & (AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON)) {
+        metastate |= AMETA_ALT_ON;
     }
-    if (state & SDL_BUTTON_X1MASK) {
-        buttons |= AMOTION_EVENT_BUTTON_BACK;
+    if (metastate & (AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON)) {
+        metastate |= AMETA_META_ON;
     }
-    if (state & SDL_BUTTON_X2MASK) {
-        buttons |= AMOTION_EVENT_BUTTON_FORWARD;
-    }
-    return buttons;
+
+    return metastate;
 }
 
-bool
-convert_mouse_action(SDL_EventType from, enum android_motionevent_action *to) {
-    switch (from) {
-        MAP(SDL_MOUSEBUTTONDOWN, AMOTION_EVENT_ACTION_DOWN);
-        MAP(SDL_MOUSEBUTTONUP,   AMOTION_EVENT_ACTION_UP);
-        FAIL;
+static enum android_metastate
+convert_meta_state(SDL_Keymod mod) {
+    enum android_metastate metastate = 0;
+    if (mod & KMOD_LSHIFT) {
+        metastate |= AMETA_SHIFT_LEFT_ON;
+    }
+    if (mod & KMOD_RSHIFT) {
+        metastate |= AMETA_SHIFT_RIGHT_ON;
+    }
+    if (mod & KMOD_LCTRL) {
+        metastate |= AMETA_CTRL_LEFT_ON;
+    }
+    if (mod & KMOD_RCTRL) {
+        metastate |= AMETA_CTRL_RIGHT_ON;
+    }
+    if (mod & KMOD_LALT) {
+        metastate |= AMETA_ALT_LEFT_ON;
+    }
+    if (mod & KMOD_RALT) {
+        metastate |= AMETA_ALT_RIGHT_ON;
+    }
+    if (mod & KMOD_LGUI) { // Windows key
+        metastate |= AMETA_META_LEFT_ON;
+    }
+    if (mod & KMOD_RGUI) { // Windows key
+        metastate |= AMETA_META_RIGHT_ON;
+    }
+    if (mod & KMOD_NUM) {
+        metastate |= AMETA_NUM_LOCK_ON;
+    }
+    if (mod & KMOD_CAPS) {
+        metastate |= AMETA_CAPS_LOCK_ON;
+    }
+    if (mod & KMOD_MODE) { // Alt Gr
+        // no mapping?
+    }
+
+    // fill the dependent fields
+    return autocomplete_metastate(metastate);
+}
+
+static bool
+convert_input_key(const SDL_KeyboardEvent *from, struct control_msg *to,
+                  bool prefer_text, uint32_t repeat) {
+    to->type = CONTROL_MSG_TYPE_INJECT_KEYCODE;
+
+    if (!convert_keycode_action(from->type, &to->inject_keycode.action)) {
+        return false;
+    }
+
+    uint16_t mod = from->keysym.mod;
+    if (!convert_keycode(from->keysym.sym, &to->inject_keycode.keycode, mod,
+                         prefer_text)) {
+        return false;
+    }
+
+    to->inject_keycode.repeat = repeat;
+    to->inject_keycode.metastate = convert_meta_state(mod);
+
+    return true;
+}
+
+static void
+sc_key_processor_process_key(struct sc_key_processor *kp,
+                             const SDL_KeyboardEvent *event) {
+    struct sc_keyboard_inject *ki = DOWNCAST(kp);
+
+    if (event->repeat) {
+        if (!ki->forward_key_repeat) {
+            return;
+        }
+        ++ki->repeat;
+    } else {
+        ki->repeat = 0;
+    }
+
+    struct control_msg msg;
+    if (convert_input_key(event, &msg, ki->prefer_text, ki->repeat)) {
+        if (!controller_push_msg(ki->controller, &msg)) {
+            LOGW("Could not request 'inject keycode'");
+        }
     }
 }
 
-bool
-convert_touch_action(SDL_EventType from, enum android_motionevent_action *to) {
-    switch (from) {
-        MAP(SDL_FINGERMOTION, AMOTION_EVENT_ACTION_MOVE);
-        MAP(SDL_FINGERDOWN,   AMOTION_EVENT_ACTION_DOWN);
-        MAP(SDL_FINGERUP,     AMOTION_EVENT_ACTION_UP);
-        FAIL;
+static void
+sc_key_processor_process_text(struct sc_key_processor *kp,
+                              const SDL_TextInputEvent *event) {
+    struct sc_keyboard_inject *ki = DOWNCAST(kp);
+
+    if (!ki->prefer_text) {
+        char c = event->text[0];
+        if (isalpha(c) || c == ' ') {
+            assert(event->text[1] == '\0');
+            // letters and space are handled as raw key event
+            return;
+        }
+    }
+
+    struct control_msg msg;
+    msg.type = CONTROL_MSG_TYPE_INJECT_TEXT;
+    msg.inject_text.text = strdup(event->text);
+    if (!msg.inject_text.text) {
+        LOGW("Could not strdup input text");
+        return;
+    }
+    if (!controller_push_msg(ki->controller, &msg)) {
+        free(msg.inject_text.text);
+        LOGW("Could not request 'inject text'");
     }
 }
+
+void
+sc_keyboard_inject_init(struct sc_keyboard_inject *ki,
+                        struct controller *controller,
+                        const struct scrcpy_options *options) {
+    ki->controller = controller;
+    ki->prefer_text = options->prefer_text;
+    ki->forward_key_repeat = options->forward_key_repeat;
+
+    ki->repeat = 0;
+
+    static const struct sc_key_processor_ops ops = {
+        .process_key = sc_key_processor_process_key,
+        .process_text = sc_key_processor_process_text,
+    };
+
+    ki->key_processor.ops = &ops;
+}

app/src/keyboard_inject.h

@@ -0,0 +1,30 @@
+#ifndef SC_KEYBOARD_INJECT_H
+#define SC_KEYBOARD_INJECT_H
+
+#include "common.h"
+
+#include <stdbool.h>
+
+#include "controller.h"
+#include "options.h"
+#include "trait/key_processor.h"
+
+struct sc_keyboard_inject {
+    struct sc_key_processor key_processor; // key processor trait
+
+    struct controller *controller;
+
+    // SDL reports repeated events as a boolean, but Android expects the actual
+    // number of repetitions. This variable keeps track of the count.
+    unsigned repeat;
+
+    bool prefer_text;
+    bool forward_key_repeat;
+};
+
+void
+sc_keyboard_inject_init(struct sc_keyboard_inject *ki,
+                        struct controller *controller,
+                        const struct scrcpy_options *options);
+
+#endif

app/src/main.c

@@ -1,15 +1,18 @@
-#include "scrcpy.h"
+#include "common.h"
 
 #include <assert.h>
 #include <stdbool.h>
 #include <unistd.h>
 #include <libavformat/avformat.h>
+#ifdef HAVE_V4L2
+# include <libavdevice/avdevice.h>
+#endif
 #define SDL_MAIN_HANDLED // avoid link error on Linux Windows Subsystem
 #include <SDL2/SDL.h>
 
-#include "config.h"
 #include "cli.h"
-#include "compat.h"
+#include "options.h"
+#include "scrcpy.h"
 #include "util/log.h"
 
 static void
@@ -28,26 +31,13 @@ print_version(void) {
     fprintf(stderr, " - libavutil %d.%d.%d\n", LIBAVUTIL_VERSION_MAJOR,
                                                LIBAVUTIL_VERSION_MINOR,
                                                LIBAVUTIL_VERSION_MICRO);
+#ifdef HAVE_V4L2
+    fprintf(stderr, " - libavdevice %d.%d.%d\n", LIBAVDEVICE_VERSION_MAJOR,
+                                                 LIBAVDEVICE_VERSION_MINOR,
+                                                 LIBAVDEVICE_VERSION_MICRO);
+#endif
 }
 
-static SDL_LogPriority
-convert_log_level_to_sdl(enum sc_log_level level) {
-    switch (level) {
-        case SC_LOG_LEVEL_DEBUG:
-            return SDL_LOG_PRIORITY_DEBUG;
-        case SC_LOG_LEVEL_INFO:
-            return SDL_LOG_PRIORITY_INFO;
-        case SC_LOG_LEVEL_WARN:
-            return SDL_LOG_PRIORITY_WARN;
-        case SC_LOG_LEVEL_ERROR:
-            return SDL_LOG_PRIORITY_ERROR;
-        default:
-            assert(!"unexpected log level");
-            return SDL_LOG_PRIORITY_INFO;
-    }
-}
-
-
 int
 main(int argc, char *argv[]) {
 #ifdef __WINDOWS__
@@ -58,7 +48,7 @@ main(int argc, char *argv[]) {
 #endif
 
     struct scrcpy_cli_args args = {
-        .opts = SCRCPY_OPTIONS_DEFAULT,
+        .opts = scrcpy_options_default,
         .help = false,
         .version = false,
     };
@@ -71,8 +61,7 @@ main(int argc, char *argv[]) {
         return 1;
     }
 
-    SDL_LogPriority sdl_log = convert_log_level_to_sdl(args.opts.log_level);
-    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, sdl_log);
+    sc_set_log_level(args.opts.log_level);
 
     if (args.help) {
         scrcpy_print_usage(argv[0]);
@@ -90,6 +79,12 @@ main(int argc, char *argv[]) {
     av_register_all();
 #endif
 
+#ifdef HAVE_V4L2
+    if (args.opts.v4l2_device) {
+        avdevice_register_all();
+    }
+#endif
+
     if (avformat_network_init()) {
         return 1;
     }

app/src/mouse_inject.c

@@ -0,0 +1,211 @@
+#include "mouse_inject.h"
+
+#include <assert.h>
+#include <SDL2/SDL_events.h>
+
+#include "android/input.h"
+#include "control_msg.h"
+#include "controller.h"
+#include "util/log.h"
+
+/** Downcast mouse processor to sc_mouse_inject */
+#define DOWNCAST(MP) container_of(MP, struct sc_mouse_inject, mouse_processor)
+
+static enum android_motionevent_buttons
+convert_mouse_buttons(uint32_t state) {
+    enum android_motionevent_buttons buttons = 0;
+    if (state & SDL_BUTTON_LMASK) {
+        buttons |= AMOTION_EVENT_BUTTON_PRIMARY;
+    }
+    if (state & SDL_BUTTON_RMASK) {
+        buttons |= AMOTION_EVENT_BUTTON_SECONDARY;
+    }
+    if (state & SDL_BUTTON_MMASK) {
+        buttons |= AMOTION_EVENT_BUTTON_TERTIARY;
+    }
+    if (state & SDL_BUTTON_X1MASK) {
+        buttons |= AMOTION_EVENT_BUTTON_BACK;
+    }
+    if (state & SDL_BUTTON_X2MASK) {
+        buttons |= AMOTION_EVENT_BUTTON_FORWARD;
+    }
+    return buttons;
+}
+
+#define MAP(FROM, TO) case FROM: *to = TO; return true
+#define FAIL default: return false
+static bool
+convert_mouse_action(SDL_EventType from, enum android_motionevent_action *to) {
+    switch (from) {
+        MAP(SDL_MOUSEBUTTONDOWN, AMOTION_EVENT_ACTION_DOWN);
+        MAP(SDL_MOUSEBUTTONUP,   AMOTION_EVENT_ACTION_UP);
+        FAIL;
+    }
+}
+
+static bool
+convert_touch_action(SDL_EventType from, enum android_motionevent_action *to) {
+    switch (from) {
+        MAP(SDL_FINGERMOTION, AMOTION_EVENT_ACTION_MOVE);
+        MAP(SDL_FINGERDOWN,   AMOTION_EVENT_ACTION_DOWN);
+        MAP(SDL_FINGERUP,     AMOTION_EVENT_ACTION_UP);
+        FAIL;
+    }
+}
+
+static bool
+convert_mouse_motion(const SDL_MouseMotionEvent *from, struct screen *screen,
+                     struct control_msg *to) {
+    to->type = CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT;
+    to->inject_touch_event.action = AMOTION_EVENT_ACTION_MOVE;
+    to->inject_touch_event.pointer_id = POINTER_ID_MOUSE;
+    to->inject_touch_event.position.screen_size = screen->frame_size;
+    to->inject_touch_event.position.point =
+        screen_convert_window_to_frame_coords(screen, from->x, from->y);
+    to->inject_touch_event.pressure = 1.f;
+    to->inject_touch_event.buttons = convert_mouse_buttons(from->state);
+
+    return true;
+}
+
+static bool
+convert_touch(const SDL_TouchFingerEvent *from, struct screen *screen,
+              struct control_msg *to) {
+    to->type = CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT;
+
+    if (!convert_touch_action(from->type, &to->inject_touch_event.action)) {
+        return false;
+    }
+
+    to->inject_touch_event.pointer_id = from->fingerId;
+    to->inject_touch_event.position.screen_size = screen->frame_size;
+
+    int dw;
+    int dh;
+    SDL_GL_GetDrawableSize(screen->window, &dw, &dh);
+
+    // SDL touch event coordinates are normalized in the range [0; 1]
+    int32_t x = from->x * dw;
+    int32_t y = from->y * dh;
+    to->inject_touch_event.position.point =
+        screen_convert_drawable_to_frame_coords(screen, x, y);
+
+    to->inject_touch_event.pressure = from->pressure;
+    to->inject_touch_event.buttons = 0;
+    return true;
+}
+
+static bool
+convert_mouse_button(const SDL_MouseButtonEvent *from, struct screen *screen,
+                     struct control_msg *to) {
+    to->type = CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT;
+
+    if (!convert_mouse_action(from->type, &to->inject_touch_event.action)) {
+        return false;
+    }
+
+    to->inject_touch_event.pointer_id = POINTER_ID_MOUSE;
+    to->inject_touch_event.position.screen_size = screen->frame_size;
+    to->inject_touch_event.position.point =
+        screen_convert_window_to_frame_coords(screen, from->x, from->y);
+    to->inject_touch_event.pressure =
+        from->type == SDL_MOUSEBUTTONDOWN ? 1.f : 0.f;
+    to->inject_touch_event.buttons =
+        convert_mouse_buttons(SDL_BUTTON(from->button));
+
+    return true;
+}
+
+static bool
+convert_mouse_wheel(const SDL_MouseWheelEvent *from, struct screen *screen,
+                    struct control_msg *to) {
+
+    // mouse_x and mouse_y are expressed in pixels relative to the window
+    int mouse_x;
+    int mouse_y;
+    SDL_GetMouseState(&mouse_x, &mouse_y);
+
+    struct sc_position position = {
+        .screen_size = screen->frame_size,
+        .point = screen_convert_window_to_frame_coords(screen,
+                                                       mouse_x, mouse_y),
+    };
+
+    to->type = CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT;
+
+    to->inject_scroll_event.position = position;
+    to->inject_scroll_event.hscroll = from->x;
+    to->inject_scroll_event.vscroll = from->y;
+
+    return true;
+}
+
+static void
+sc_mouse_processor_process_mouse_motion(struct sc_mouse_processor *mp,
+                                        const SDL_MouseMotionEvent *event) {
+    struct sc_mouse_inject *mi = DOWNCAST(mp);
+
+    struct control_msg msg;
+    if (!convert_mouse_motion(event, mi->screen, &msg)) {
+        return;
+    }
+
+    if (!controller_push_msg(mi->controller, &msg)) {
+        LOGW("Could not request 'inject mouse motion event'");
+    }
+}
+
+static void
+sc_mouse_processor_process_touch(struct sc_mouse_processor *mp,
+                                 const SDL_TouchFingerEvent *event) {
+    struct sc_mouse_inject *mi = DOWNCAST(mp);
+
+    struct control_msg msg;
+    if (convert_touch(event, mi->screen, &msg)) {
+        if (!controller_push_msg(mi->controller, &msg)) {
+            LOGW("Could not request 'inject touch event'");
+        }
+    }
+}
+
+static void
+sc_mouse_processor_process_mouse_button(struct sc_mouse_processor *mp,
+                                        const SDL_MouseButtonEvent *event) {
+    struct sc_mouse_inject *mi = DOWNCAST(mp);
+
+    struct control_msg msg;
+    if (convert_mouse_button(event, mi->screen, &msg)) {
+        if (!controller_push_msg(mi->controller, &msg)) {
+            LOGW("Could not request 'inject mouse button event'");
+        }
+    }
+}
+
+static void
+sc_mouse_processor_process_mouse_wheel(struct sc_mouse_processor *mp,
+                                       const SDL_MouseWheelEvent *event) {
+    struct sc_mouse_inject *mi = DOWNCAST(mp);
+
+    struct control_msg msg;
+    if (convert_mouse_wheel(event, mi->screen, &msg)) {
+        if (!controller_push_msg(mi->controller, &msg)) {
+            LOGW("Could not request 'inject mouse wheel event'");
+        }
+    }
+}
+
+void
+sc_mouse_inject_init(struct sc_mouse_inject *mi, struct controller *controller,
+                     struct screen *screen) {
+    mi->controller = controller;
+    mi->screen = screen;
+
+    static const struct sc_mouse_processor_ops ops = {
+        .process_mouse_motion = sc_mouse_processor_process_mouse_motion,
+        .process_touch = sc_mouse_processor_process_touch,
+        .process_mouse_button = sc_mouse_processor_process_mouse_button,
+        .process_mouse_wheel = sc_mouse_processor_process_mouse_wheel,
+    };
+
+    mi->mouse_processor.ops = &ops;
+}

app/src/mouse_inject.h

@@ -0,0 +1,23 @@
+#ifndef SC_MOUSE_INJECT_H
+#define SC_MOUSE_INJECT_H
+
+#include "common.h"
+
+#include <stdbool.h>
+
+#include "controller.h"
+#include "screen.h"
+#include "trait/mouse_processor.h"
+
+struct sc_mouse_inject {
+    struct sc_mouse_processor mouse_processor; // mouse processor trait
+
+    struct controller *controller;
+    struct screen *screen;
+};
+
+void
+sc_mouse_inject_init(struct sc_mouse_inject *mi, struct controller *controller,
+                     struct screen *screen);
+
+#endif

app/src/opengl.h

@@ -1,11 +1,11 @@
 #ifndef SC_OPENGL_H
 #define SC_OPENGL_H
 
+#include "common.h"
+
 #include <stdbool.h>
 #include <SDL2/SDL_opengl.h>
 
-#include "config.h"
-
 struct sc_opengl {
     const char *version;
     bool is_opengles;

app/src/options.c

@@ -0,0 +1,54 @@
+#include "options.h"
+
+const struct scrcpy_options scrcpy_options_default = {
+    .serial = NULL,
+    .crop = NULL,
+    .record_filename = NULL,
+    .window_title = NULL,
+    .push_target = NULL,
+    .render_driver = NULL,
+    .codec_options = NULL,
+    .encoder_name = NULL,
+#ifdef HAVE_V4L2
+    .v4l2_device = NULL,
+#endif
+    .log_level = SC_LOG_LEVEL_INFO,
+    .record_format = SC_RECORD_FORMAT_AUTO,
+    .keyboard_input_mode = SC_KEYBOARD_INPUT_MODE_INJECT,
+    .port_range = {
+        .first = DEFAULT_LOCAL_PORT_RANGE_FIRST,
+        .last = DEFAULT_LOCAL_PORT_RANGE_LAST,
+    },
+    .shortcut_mods = {
+        .data = {SC_MOD_LALT, SC_MOD_LSUPER},
+        .count = 2,
+    },
+    .max_size = 0,
+    .bit_rate = DEFAULT_BIT_RATE,
+    .max_fps = 0,
+    .lock_video_orientation = SC_LOCK_VIDEO_ORIENTATION_UNLOCKED,
+    .rotation = 0,
+    .window_x = SC_WINDOW_POSITION_UNDEFINED,
+    .window_y = SC_WINDOW_POSITION_UNDEFINED,
+    .window_width = 0,
+    .window_height = 0,
+    .display_id = 0,
+    .display_buffer = 0,
+    .v4l2_buffer = 0,
+    .show_touches = false,
+    .fullscreen = false,
+    .always_on_top = false,
+    .control = true,
+    .display = true,
+    .turn_screen_off = false,
+    .prefer_text = false,
+    .window_borderless = false,
+    .mipmaps = true,
+    .stay_awake = false,
+    .force_adb_forward = false,
+    .disable_screensaver = false,
+    .forward_key_repeat = true,
+    .forward_all_clicks = false,
+    .legacy_paste = false,
+    .power_off_on_close = false,
+};

app/src/options.h

@@ -0,0 +1,113 @@
+#ifndef SCRCPY_OPTIONS_H
+#define SCRCPY_OPTIONS_H
+
+#include "common.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "util/tick.h"
+
+enum sc_log_level {
+    SC_LOG_LEVEL_VERBOSE,
+    SC_LOG_LEVEL_DEBUG,
+    SC_LOG_LEVEL_INFO,
+    SC_LOG_LEVEL_WARN,
+    SC_LOG_LEVEL_ERROR,
+};
+
+enum sc_record_format {
+    SC_RECORD_FORMAT_AUTO,
+    SC_RECORD_FORMAT_MP4,
+    SC_RECORD_FORMAT_MKV,
+};
+
+enum sc_lock_video_orientation {
+    SC_LOCK_VIDEO_ORIENTATION_UNLOCKED = -1,
+    // lock the current orientation when scrcpy starts
+    SC_LOCK_VIDEO_ORIENTATION_INITIAL = -2,
+    SC_LOCK_VIDEO_ORIENTATION_0 = 0,
+    SC_LOCK_VIDEO_ORIENTATION_1,
+    SC_LOCK_VIDEO_ORIENTATION_2,
+    SC_LOCK_VIDEO_ORIENTATION_3,
+};
+
+enum sc_keyboard_input_mode {
+    SC_KEYBOARD_INPUT_MODE_INJECT,
+    SC_KEYBOARD_INPUT_MODE_HID,
+};
+
+#define SC_MAX_SHORTCUT_MODS 8
+
+enum sc_shortcut_mod {
+    SC_MOD_LCTRL = 1 << 0,
+    SC_MOD_RCTRL = 1 << 1,
+    SC_MOD_LALT = 1 << 2,
+    SC_MOD_RALT = 1 << 3,
+    SC_MOD_LSUPER = 1 << 4,
+    SC_MOD_RSUPER = 1 << 5,
+};
+
+struct sc_shortcut_mods {
+    unsigned data[SC_MAX_SHORTCUT_MODS];
+    unsigned count;
+};
+
+struct sc_port_range {
+    uint16_t first;
+    uint16_t last;
+};
+
+#define SC_WINDOW_POSITION_UNDEFINED (-0x8000)
+
+struct scrcpy_options {
+    const char *serial;
+    const char *crop;
+    const char *record_filename;
+    const char *window_title;
+    const char *push_target;
+    const char *render_driver;
+    const char *codec_options;
+    const char *encoder_name;
+#ifdef HAVE_V4L2
+    const char *v4l2_device;
+#endif
+    enum sc_log_level log_level;
+    enum sc_record_format record_format;
+    enum sc_keyboard_input_mode keyboard_input_mode;
+    struct sc_port_range port_range;
+    struct sc_shortcut_mods shortcut_mods;
+    uint16_t max_size;
+    uint32_t bit_rate;
+    uint16_t max_fps;
+    enum sc_lock_video_orientation lock_video_orientation;
+    uint8_t rotation;
+    int16_t window_x; // SC_WINDOW_POSITION_UNDEFINED for "auto"
+    int16_t window_y; // SC_WINDOW_POSITION_UNDEFINED for "auto"
+    uint16_t window_width;
+    uint16_t window_height;
+    uint32_t display_id;
+    sc_tick display_buffer;
+    sc_tick v4l2_buffer;
+    bool show_touches;
+    bool fullscreen;
+    bool always_on_top;
+    bool control;
+    bool display;
+    bool turn_screen_off;
+    bool prefer_text;
+    bool window_borderless;
+    bool mipmaps;
+    bool stay_awake;
+    bool force_adb_forward;
+    bool disable_screensaver;
+    bool forward_key_repeat;
+    bool forward_all_clicks;
+    bool legacy_paste;
+    bool power_off_on_close;
+};
+
+extern const struct scrcpy_options scrcpy_options_default;
+
+#endif

app/src/receiver.c

@@ -3,14 +3,13 @@
 #include <assert.h>
 #include <SDL2/SDL_clipboard.h>
 
-#include "config.h"
 #include "device_msg.h"
-#include "util/lock.h"
 #include "util/log.h"
 
 bool
-receiver_init(struct receiver *receiver, socket_t control_socket) {
-    if (!(receiver->mutex = SDL_CreateMutex())) {
+receiver_init(struct receiver *receiver, sc_socket control_socket) {
+    bool ok = sc_mutex_init(&receiver->mutex);
+    if (!ok) {
         return false;
     }
     receiver->control_socket = control_socket;
@@ -19,7 +18,7 @@ receiver_init(struct receiver *receiver, socket_t control_socket) {
 
 void
 receiver_destroy(struct receiver *receiver) {
-    SDL_DestroyMutex(receiver->mutex);
+    sc_mutex_destroy(&receiver->mutex);
 }
 
 static void
@@ -102,8 +101,9 @@ bool
 receiver_start(struct receiver *receiver) {
     LOGD("Starting receiver thread");
 
-    receiver->thread = SDL_CreateThread(run_receiver, "receiver", receiver);
-    if (!receiver->thread) {
+    bool ok = sc_thread_create(&receiver->thread, run_receiver, "receiver",
+                               receiver);
+    if (!ok) {
         LOGC("Could not start receiver thread");
         return false;
     }
@@ -113,5 +113,5 @@ receiver_start(struct receiver *receiver) {
 
 void
 receiver_join(struct receiver *receiver) {
-    SDL_WaitThread(receiver->thread, NULL);
+    sc_thread_join(&receiver->thread, NULL);
 }

app/src/receiver.h

@@ -1,23 +1,23 @@
 #ifndef RECEIVER_H
 #define RECEIVER_H
 
-#include <stdbool.h>
-#include <SDL2/SDL_mutex.h>
-#include <SDL2/SDL_thread.h>
+#include "common.h"
+
+#include <stdbool.h>
 
-#include "config.h"
 #include "util/net.h"
+#include "util/thread.h"
 
 // receive events from the device
 // managed by the controller
 struct receiver {
-    socket_t control_socket;
-    SDL_Thread *thread;
-    SDL_mutex *mutex;
+    sc_socket control_socket;
+    sc_thread thread;
+    sc_mutex mutex;
 };
 
 bool
-receiver_init(struct receiver *receiver, socket_t control_socket);
+receiver_init(struct receiver *receiver, sc_socket control_socket);
 
 void
 receiver_destroy(struct receiver *receiver);

app/src/recorder.c

@@ -1,12 +1,15 @@
 #include "recorder.h"
 
 #include <assert.h>
+#include <libavcodec/avcodec.h>
+#include <libavformat/avformat.h>
 #include <libavutil/time.h>
 
-#include "config.h"
-#include "compat.h"
-#include "util/lock.h"
 #include "util/log.h"
+#include "util/str.h"
+
+/** Downcast packet_sink to recorder */
+#define DOWNCAST(SINK) container_of(SINK, struct recorder, packet_sink)
 
 static const AVRational SCRCPY_TIME_BASE = {1, 1000000}; // timestamps in us
 
@@ -22,24 +25,27 @@ find_muxer(const char *name) {
 #else
         oformat = av_oformat_next(oformat);
 #endif
-        // until null or with name "mp4"
-    } while (oformat && strcmp(oformat->name, name));
+        // until null or containing the requested name
+    } while (oformat && !sc_str_list_contains(oformat->name, ',', name));
     return oformat;
 }
 
 static struct record_packet *
 record_packet_new(const AVPacket *packet) {
-    struct record_packet *rec = SDL_malloc(sizeof(*rec));
+    struct record_packet *rec = malloc(sizeof(*rec));
     if (!rec) {
         return NULL;
     }
 
-    // av_packet_ref() does not initialize all fields in old FFmpeg versions
-    // See <https://github.com/Genymobile/scrcpy/issues/707>
-    av_init_packet(&rec->packet);
+    rec->packet = av_packet_alloc();
+    if (!rec->packet) {
+        free(rec);
+        return NULL;
+    }
 
-    if (av_packet_ref(&rec->packet, packet)) {
-        SDL_free(rec);
+    if (av_packet_ref(rec->packet, packet)) {
+        av_packet_free(&rec->packet);
+        free(rec);
         return NULL;
     }
     return rec;
@@ -47,63 +53,19 @@ record_packet_new(const AVPacket *packet) {
 
 static void
 record_packet_delete(struct record_packet *rec) {
-    av_packet_unref(&rec->packet);
-    SDL_free(rec);
+    av_packet_free(&rec->packet);
+    free(rec);
 }
 
 static void
 recorder_queue_clear(struct recorder_queue *queue) {
-    while (!queue_is_empty(queue)) {
+    while (!sc_queue_is_empty(queue)) {
         struct record_packet *rec;
-        queue_take(queue, next, &rec);
+        sc_queue_take(queue, next, &rec);
         record_packet_delete(rec);
     }
 }
 
-bool
-recorder_init(struct recorder *recorder,
-              const char *filename,
-              enum sc_record_format format,
-              struct size declared_frame_size) {
-    recorder->filename = SDL_strdup(filename);
-    if (!recorder->filename) {
-        LOGE("Could not strdup filename");
-        return false;
-    }
-
-    recorder->mutex = SDL_CreateMutex();
-    if (!recorder->mutex) {
-        LOGC("Could not create mutex");
-        SDL_free(recorder->filename);
-        return false;
-    }
-
-    recorder->queue_cond = SDL_CreateCond();
-    if (!recorder->queue_cond) {
-        LOGC("Could not create cond");
-        SDL_DestroyMutex(recorder->mutex);
-        SDL_free(recorder->filename);
-        return false;
-    }
-
-    queue_init(&recorder->queue);
-    recorder->stopped = false;
-    recorder->failed = false;
-    recorder->format = format;
-    recorder->declared_frame_size = declared_frame_size;
-    recorder->header_written = false;
-    recorder->previous = NULL;
-
-    return true;
-}
-
-void
-recorder_destroy(struct recorder *recorder) {
-    SDL_DestroyCond(recorder->queue_cond);
-    SDL_DestroyMutex(recorder->mutex);
-    SDL_free(recorder->filename);
-}
-
 static const char *
 recorder_get_format_name(enum sc_record_format format) {
     switch (format) {
@@ -113,88 +75,6 @@ recorder_get_format_name(enum sc_record_format format) {
     }
 }
 
-bool
-recorder_open(struct recorder *recorder, const AVCodec *input_codec) {
-    const char *format_name = recorder_get_format_name(recorder->format);
-    assert(format_name);
-    const AVOutputFormat *format = find_muxer(format_name);
-    if (!format) {
-        LOGE("Could not find muxer");
-        return false;
-    }
-
-    recorder->ctx = avformat_alloc_context();
-    if (!recorder->ctx) {
-        LOGE("Could not allocate output context");
-        return false;
-    }
-
-    // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
-    // returns (on purpose) a pointer-to-const, but AVFormatContext.oformat
-    // still expects a pointer-to-non-const (it has not be updated accordingly)
-    // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
-    recorder->ctx->oformat = (AVOutputFormat *) format;
-
-    av_dict_set(&recorder->ctx->metadata, "comment",
-                "Recorded by scrcpy " SCRCPY_VERSION, 0);
-
-    AVStream *ostream = avformat_new_stream(recorder->ctx, input_codec);
-    if (!ostream) {
-        avformat_free_context(recorder->ctx);
-        return false;
-    }
-
-#ifdef SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
-    ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
-    ostream->codecpar->codec_id = input_codec->id;
-    ostream->codecpar->format = AV_PIX_FMT_YUV420P;
-    ostream->codecpar->width = recorder->declared_frame_size.width;
-    ostream->codecpar->height = recorder->declared_frame_size.height;
-#else
-    ostream->codec->codec_type = AVMEDIA_TYPE_VIDEO;
-    ostream->codec->codec_id = input_codec->id;
-    ostream->codec->pix_fmt = AV_PIX_FMT_YUV420P;
-    ostream->codec->width = recorder->declared_frame_size.width;
-    ostream->codec->height = recorder->declared_frame_size.height;
-#endif
-
-    int ret = avio_open(&recorder->ctx->pb, recorder->filename,
-                        AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        LOGE("Failed to open output file: %s", recorder->filename);
-        // ostream will be cleaned up during context cleaning
-        avformat_free_context(recorder->ctx);
-        return false;
-    }
-
-    LOGI("Recording started to %s file: %s", format_name, recorder->filename);
-
-    return true;
-}
-
-void
-recorder_close(struct recorder *recorder) {
-    if (recorder->header_written) {
-        int ret = av_write_trailer(recorder->ctx);
-        if (ret < 0) {
-            LOGE("Failed to write trailer to %s", recorder->filename);
-            recorder->failed = true;
-        }
-    } else {
-        // the recorded file is empty
-        recorder->failed = true;
-    }
-    avio_close(recorder->ctx->pb);
-    avformat_free_context(recorder->ctx);
-
-    if (recorder->failed) {
-        LOGE("Recording failed to %s", recorder->filename);
-    } else {
-        const char *format_name = recorder_get_format_name(recorder->format);
-        LOGI("Recording complete to %s file: %s", format_name, recorder->filename);
-    }
-}
-
 static bool
 recorder_write_header(struct recorder *recorder, const AVPacket *packet) {
     AVStream *ostream = recorder->ctx->streams[0];
@@ -208,13 +88,8 @@ recorder_write_header(struct recorder *recorder, const AVPacket *packet) {
     // copy the first packet to the extra data
     memcpy(extradata, packet->data, packet->size);
 
-#ifdef SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
     ostream->codecpar->extradata = extradata;
     ostream->codecpar->extradata_size = packet->size;
-#else
-    ostream->codec->extradata = extradata;
-    ostream->codec->extradata_size = packet->size;
-#endif
 
     int ret = avformat_write_header(recorder->ctx, NULL);
     if (ret < 0) {
@@ -231,7 +106,7 @@ recorder_rescale_packet(struct recorder *recorder, AVPacket *packet) {
     av_packet_rescale_ts(packet, SCRCPY_TIME_BASE, ostream->time_base);
 }
 
-bool
+static bool
 recorder_write(struct recorder *recorder, AVPacket *packet) {
     if (!recorder->header_written) {
         if (packet->pts != AV_NOPTS_VALUE) {
@@ -260,22 +135,22 @@ run_recorder(void *data) {
     struct recorder *recorder = data;
 
     for (;;) {
-        mutex_lock(recorder->mutex);
+        sc_mutex_lock(&recorder->mutex);
 
-        while (!recorder->stopped && queue_is_empty(&recorder->queue)) {
-            cond_wait(recorder->queue_cond, recorder->mutex);
+        while (!recorder->stopped && sc_queue_is_empty(&recorder->queue)) {
+            sc_cond_wait(&recorder->queue_cond, &recorder->mutex);
         }
 
         // if stopped is set, continue to process the remaining events (to
         // finish the recording) before actually stopping
 
-        if (recorder->stopped && queue_is_empty(&recorder->queue)) {
-            mutex_unlock(recorder->mutex);
+        if (recorder->stopped && sc_queue_is_empty(&recorder->queue)) {
+            sc_mutex_unlock(&recorder->mutex);
             struct record_packet *last = recorder->previous;
             if (last) {
                 // assign an arbitrary duration to the last packet
-                last->packet.duration = 100000;
-                bool ok = recorder_write(recorder, &last->packet);
+                last->packet->duration = 100000;
+                bool ok = recorder_write(recorder, last->packet);
                 if (!ok) {
                     // failing to write the last frame is not very serious, no
                     // future frame may depend on it, so the resulting file
@@ -288,9 +163,9 @@ run_recorder(void *data) {
         }
 
         struct record_packet *rec;
-        queue_take(&recorder->queue, next, &rec);
+        sc_queue_take(&recorder->queue, next, &rec);
 
-        mutex_unlock(recorder->mutex);
+        sc_mutex_unlock(&recorder->mutex);
 
         // recorder->previous is only written from this thread, no need to lock
         struct record_packet *previous = recorder->previous;
@@ -302,25 +177,46 @@ run_recorder(void *data) {
         }
 
         // config packets have no PTS, we must ignore them
-        if (rec->packet.pts != AV_NOPTS_VALUE
-            && previous->packet.pts != AV_NOPTS_VALUE) {
+        if (rec->packet->pts != AV_NOPTS_VALUE
+            && previous->packet->pts != AV_NOPTS_VALUE) {
             // we now know the duration of the previous packet
-            previous->packet.duration = rec->packet.pts - previous->packet.pts;
+            previous->packet->duration =
+                rec->packet->pts - previous->packet->pts;
         }
 
-        bool ok = recorder_write(recorder, &previous->packet);
+        bool ok = recorder_write(recorder, previous->packet);
         record_packet_delete(previous);
         if (!ok) {
             LOGE("Could not record packet");
 
-            mutex_lock(recorder->mutex);
+            sc_mutex_lock(&recorder->mutex);
             recorder->failed = true;
             // discard pending packets
             recorder_queue_clear(&recorder->queue);
-            mutex_unlock(recorder->mutex);
+            sc_mutex_unlock(&recorder->mutex);
             break;
         }
+    }
 
+    if (!recorder->failed) {
+        if (recorder->header_written) {
+            int ret = av_write_trailer(recorder->ctx);
+            if (ret < 0) {
+                LOGE("Failed to write trailer to %s", recorder->filename);
+                recorder->failed = true;
+            }
+        } else {
+            // the recorded file is empty
+            recorder->failed = true;
+        }
+    }
+
+    if (recorder->failed) {
+        LOGE("Recording failed to %s", recorder->filename);
+    } else {
+        const char *format_name = recorder_get_format_name(recorder->format);
+        LOGI("Recording complete to %s file: %s", format_name,
+                                                  recorder->filename);
     }
 
     LOGD("Recorder thread ended");
@@ -328,53 +224,176 @@ run_recorder(void *data) {
     return 0;
 }
 
-bool
-recorder_start(struct recorder *recorder) {
-    LOGD("Starting recorder thread");
-
-    recorder->thread = SDL_CreateThread(run_recorder, "recorder", recorder);
-    if (!recorder->thread) {
-        LOGC("Could not start recorder thread");
+static bool
+recorder_open(struct recorder *recorder, const AVCodec *input_codec) {
+    bool ok = sc_mutex_init(&recorder->mutex);
+    if (!ok) {
+        LOGC("Could not create mutex");
         return false;
     }
 
+    ok = sc_cond_init(&recorder->queue_cond);
+    if (!ok) {
+        LOGC("Could not create cond");
+        goto error_mutex_destroy;
+    }
+
+    sc_queue_init(&recorder->queue);
+    recorder->stopped = false;
+    recorder->failed = false;
+    recorder->header_written = false;
+    recorder->previous = NULL;
+
+    const char *format_name = recorder_get_format_name(recorder->format);
+    assert(format_name);
+    const AVOutputFormat *format = find_muxer(format_name);
+    if (!format) {
+        LOGE("Could not find muxer");
+        goto error_cond_destroy;
+    }
+
+    recorder->ctx = avformat_alloc_context();
+    if (!recorder->ctx) {
+        LOGE("Could not allocate output context");
+        goto error_cond_destroy;
+    }
+
+    // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
+    // returns (on purpose) a pointer-to-const, but AVFormatContext.oformat
+    // still expects a pointer-to-non-const (it has not be updated accordingly)
+    // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
+    recorder->ctx->oformat = (AVOutputFormat *) format;
+
+    av_dict_set(&recorder->ctx->metadata, "comment",
+                "Recorded by scrcpy " SCRCPY_VERSION, 0);
+
+    AVStream *ostream = avformat_new_stream(recorder->ctx, input_codec);
+    if (!ostream) {
+        goto error_avformat_free_context;
+    }
+
+    ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+    ostream->codecpar->codec_id = input_codec->id;
+    ostream->codecpar->format = AV_PIX_FMT_YUV420P;
+    ostream->codecpar->width = recorder->declared_frame_size.width;
+    ostream->codecpar->height = recorder->declared_frame_size.height;
+
+    int ret = avio_open(&recorder->ctx->pb, recorder->filename,
+                        AVIO_FLAG_WRITE);
+    if (ret < 0) {
+        LOGE("Failed to open output file: %s", recorder->filename);
+        // ostream will be cleaned up during context cleaning
+        goto error_avformat_free_context;
+    }
+
+    LOGD("Starting recorder thread");
+    ok = sc_thread_create(&recorder->thread, run_recorder, "recorder",
+                               recorder);
+    if (!ok) {
+        LOGC("Could not start recorder thread");
+        goto error_avio_close;
+    }
+
+    LOGI("Recording started to %s file: %s", format_name, recorder->filename);
+
     return true;
+
+error_avio_close:
+    avio_close(recorder->ctx->pb);
+error_avformat_free_context:
+    avformat_free_context(recorder->ctx);
+error_cond_destroy:
+    sc_cond_destroy(&recorder->queue_cond);
+error_mutex_destroy:
+    sc_mutex_destroy(&recorder->mutex);
+
+    return false;
 }
 
-void
-recorder_stop(struct recorder *recorder) {
-    mutex_lock(recorder->mutex);
+static void
+recorder_close(struct recorder *recorder) {
+    sc_mutex_lock(&recorder->mutex);
     recorder->stopped = true;
-    cond_signal(recorder->queue_cond);
-    mutex_unlock(recorder->mutex);
+    sc_cond_signal(&recorder->queue_cond);
+    sc_mutex_unlock(&recorder->mutex);
+
+    sc_thread_join(&recorder->thread, NULL);
+
+    avio_close(recorder->ctx->pb);
+    avformat_free_context(recorder->ctx);
+    sc_cond_destroy(&recorder->queue_cond);
+    sc_mutex_destroy(&recorder->mutex);
 }
 
-void
-recorder_join(struct recorder *recorder) {
-    SDL_WaitThread(recorder->thread, NULL);
-}
-
-bool
+static bool
 recorder_push(struct recorder *recorder, const AVPacket *packet) {
-    mutex_lock(recorder->mutex);
+    sc_mutex_lock(&recorder->mutex);
     assert(!recorder->stopped);
 
     if (recorder->failed) {
         // reject any new packet (this will stop the stream)
-        mutex_unlock(recorder->mutex);
+        sc_mutex_unlock(&recorder->mutex);
         return false;
     }
 
     struct record_packet *rec = record_packet_new(packet);
     if (!rec) {
         LOGC("Could not allocate record packet");
-        mutex_unlock(recorder->mutex);
+        sc_mutex_unlock(&recorder->mutex);
         return false;
     }
 
-    queue_push(&recorder->queue, next, rec);
-    cond_signal(recorder->queue_cond);
+    sc_queue_push(&recorder->queue, next, rec);
+    sc_cond_signal(&recorder->queue_cond);
 
-    mutex_unlock(recorder->mutex);
+    sc_mutex_unlock(&recorder->mutex);
     return true;
 }
+
+static bool
+recorder_packet_sink_open(struct sc_packet_sink *sink, const AVCodec *codec) {
+    struct recorder *recorder = DOWNCAST(sink);
+    return recorder_open(recorder, codec);
+}
+
+static void
+recorder_packet_sink_close(struct sc_packet_sink *sink) {
+    struct recorder *recorder = DOWNCAST(sink);
+    recorder_close(recorder);
+}
+
+static bool
+recorder_packet_sink_push(struct sc_packet_sink *sink, const AVPacket *packet) {
+    struct recorder *recorder = DOWNCAST(sink);
+    return recorder_push(recorder, packet);
+}
+
+bool
+recorder_init(struct recorder *recorder,
+              const char *filename,
+              enum sc_record_format format,
+              struct sc_size declared_frame_size) {
+    recorder->filename = strdup(filename);
+    if (!recorder->filename) {
+        LOGE("Could not strdup filename");
+        return false;
+    }
+
+    recorder->format = format;
+    recorder->declared_frame_size = declared_frame_size;
+
+    static const struct sc_packet_sink_ops ops = {
+        .open = recorder_packet_sink_open,
+        .close = recorder_packet_sink_close,
+        .push = recorder_packet_sink_push,
+    };
+
+    recorder->packet_sink.ops = &ops;
+
+    return true;
+}
+
+void
+recorder_destroy(struct recorder *recorder) {
+    free(recorder->filename);
+}

app/src/recorder.h

@@ -1,34 +1,37 @@
 #ifndef RECORDER_H
 #define RECORDER_H
 
+#include "common.h"
+
 #include <stdbool.h>
 #include <libavformat/avformat.h>
-#include <SDL2/SDL_mutex.h>
-#include <SDL2/SDL_thread.h>
 
-#include "config.h"
-#include "common.h"
-#include "scrcpy.h"
+#include "coords.h"
+#include "options.h"
+#include "trait/packet_sink.h"
 #include "util/queue.h"
+#include "util/thread.h"
 
 struct record_packet {
-    AVPacket packet;
+    AVPacket *packet;
     struct record_packet *next;
 };
 
-struct recorder_queue QUEUE(struct record_packet);
+struct recorder_queue SC_QUEUE(struct record_packet);
 
 struct recorder {
+    struct sc_packet_sink packet_sink; // packet sink trait
+
     char *filename;
     enum sc_record_format format;
     AVFormatContext *ctx;
-    struct size declared_frame_size;
+    struct sc_size declared_frame_size;
     bool header_written;
 
-    SDL_Thread *thread;
-    SDL_mutex *mutex;
-    SDL_cond *queue_cond;
-    bool stopped; // set on recorder_stop() by the stream reader
+    sc_thread thread;
+    sc_mutex mutex;
+    sc_cond queue_cond;
+    bool stopped; // set on recorder_close()
     bool failed; // set on packet write failure
     struct recorder_queue queue;
 
@@ -41,27 +44,9 @@ struct recorder {
 
 bool
 recorder_init(struct recorder *recorder, const char *filename,
-              enum sc_record_format format, struct size declared_frame_size);
+              enum sc_record_format format, struct sc_size declared_frame_size);
 
 void
 recorder_destroy(struct recorder *recorder);
 
-bool
-recorder_open(struct recorder *recorder, const AVCodec *input_codec);
-
-void
-recorder_close(struct recorder *recorder);
-
-bool
-recorder_start(struct recorder *recorder);
-
-void
-recorder_stop(struct recorder *recorder);
-
-void
-recorder_join(struct recorder *recorder);
-
-bool
-recorder_push(struct recorder *recorder, const AVPacket *packet);
-
 #endif

app/src/scrcpy.c

@@ -13,86 +13,74 @@
 # include <windows.h>
 #endif
 
-#include "config.h"
-#include "command.h"
-#include "common.h"
-#include "compat.h"
 #include "controller.h"
 #include "decoder.h"
-#include "device.h"
 #include "events.h"
 #include "file_handler.h"
-#include "fps_counter.h"
 #include "input_manager.h"
+#ifdef HAVE_AOA_HID
+# include "hid_keyboard.h"
+#endif
+#include "keyboard_inject.h"
+#include "mouse_inject.h"
 #include "recorder.h"
 #include "screen.h"
 #include "server.h"
 #include "stream.h"
-#include "tiny_xpm.h"
-#include "video_buffer.h"
-#include "util/lock.h"
 #include "util/log.h"
 #include "util/net.h"
+#ifdef HAVE_V4L2
+# include "v4l2_sink.h"
+#endif
 
-static struct server server = SERVER_INITIALIZER;
-static struct screen screen = SCREEN_INITIALIZER;
-static struct fps_counter fps_counter;
-static struct video_buffer video_buffer;
-static struct stream stream;
-static struct decoder decoder;
-static struct recorder recorder;
-static struct controller controller;
-static struct file_handler file_handler;
-
-static struct input_manager input_manager = {
-    .controller = &controller,
-    .video_buffer = &video_buffer,
-    .screen = &screen,
-    .repeat = 0,
-
-    // initialized later
-    .prefer_text = false,
-    .sdl_shortcut_mods = {
-        .data = {0},
-        .count = 0,
-    },
+struct scrcpy {
+    struct sc_server server;
+    struct screen screen;
+    struct stream stream;
+    struct decoder decoder;
+    struct recorder recorder;
+#ifdef HAVE_V4L2
+    struct sc_v4l2_sink v4l2_sink;
+#endif
+    struct controller controller;
+    struct file_handler file_handler;
+#ifdef HAVE_AOA_HID
+    struct sc_aoa aoa;
+#endif
+    union {
+        struct sc_keyboard_inject keyboard_inject;
+#ifdef HAVE_AOA_HID
+        struct sc_hid_keyboard keyboard_hid;
+#endif
+    };
+    struct sc_mouse_inject mouse_inject;
+    struct input_manager input_manager;
 };
 
+static inline void
+push_event(uint32_t type, const char *name) {
+    SDL_Event event;
+    event.type = type;
+    int ret = SDL_PushEvent(&event);
+    if (ret < 0) {
+        LOGE("Could not post %s event: %s", name, SDL_GetError());
+        // What could we do?
+    }
+}
+#define PUSH_EVENT(TYPE) push_event(TYPE, # TYPE)
+
 #ifdef _WIN32
 BOOL WINAPI windows_ctrl_handler(DWORD ctrl_type) {
     if (ctrl_type == CTRL_C_EVENT) {
-        SDL_Event event;
-        event.type = SDL_QUIT;
-        SDL_PushEvent(&event);
+        PUSH_EVENT(SDL_QUIT);
         return TRUE;
     }
     return FALSE;
 }
 #endif // _WIN32
 
-// init SDL and set appropriate hints
-static bool
-sdl_init_and_configure(bool display, const char *render_driver,
-                       bool disable_screensaver) {
-    uint32_t flags = display ? SDL_INIT_VIDEO : SDL_INIT_EVENTS;
-    if (SDL_Init(flags)) {
-        LOGC("Could not initialize SDL: %s", SDL_GetError());
-        return false;
-    }
-
-    atexit(SDL_Quit);
-
-#ifdef _WIN32
-    // Clean up properly on Ctrl+C on Windows
-    bool ok = SetConsoleCtrlHandler(windows_ctrl_handler, TRUE);
-    if (!ok) {
-        LOGW("Could not set Ctrl+C handler");
-    }
-#endif // _WIN32
-
-    if (!display) {
-        return true;
-    }
+static void
+sdl_set_hints(const char *render_driver) {
 
     if (render_driver && !SDL_SetHint(SDL_HINT_RENDER_DRIVER, render_driver)) {
         LOGW("Could not set render driver");
@@ -110,6 +98,15 @@ sdl_init_and_configure(bool display, const char *render_driver,
     }
 #endif
 
+#ifdef SCRCPY_SDL_HAS_HINT_TOUCH_MOUSE_EVENTS
+    // Disable synthetic mouse events from touch events
+    // Touch events with id SDL_TOUCH_MOUSEID are ignored anyway, but it is
+    // better not to generate them in the first place.
+    if (!SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0")) {
+        LOGW("Could not disable synthetic mouse events");
+    }
+#endif
+
 #ifdef SCRCPY_SDL_HAS_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR
     // Disable compositor bypassing on X11
     if (!SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0")) {
@@ -121,6 +118,21 @@ sdl_init_and_configure(bool display, const char *render_driver,
     if (!SDL_SetHint(SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS, "0")) {
         LOGW("Could not disable minimize on focus loss");
     }
+}
+
+static void
+sdl_configure(bool display, bool disable_screensaver) {
+#ifdef _WIN32
+    // Clean up properly on Ctrl+C on Windows
+    bool ok = SetConsoleCtrlHandler(windows_ctrl_handler, TRUE);
+    if (!ok) {
+        LOGW("Could not set Ctrl+C handler");
+    }
+#endif // _WIN32
+
+    if (!display) {
+        return;
+    }
 
     if (disable_screensaver) {
         LOGD("Screensaver disabled");
@@ -129,34 +141,8 @@ sdl_init_and_configure(bool display, const char *render_driver,
         LOGD("Screensaver enabled");
         SDL_EnableScreenSaver();
     }
-
-    return true;
 }
 
-
-#if defined(__APPLE__) || defined(__WINDOWS__)
-# define CONTINUOUS_RESIZING_WORKAROUND
-#endif
-
-#ifdef CONTINUOUS_RESIZING_WORKAROUND
-// On Windows and MacOS, resizing blocks the event loop, so resizing events are
-// not triggered. As a workaround, handle them in an event handler.
-//
-// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
-// <https://stackoverflow.com/a/40693139/1987178>
-static int
-event_watcher(void *data, SDL_Event *event) {
-    (void) data;
-    if (event->type == SDL_WINDOWEVENT
-            && event->window.event == SDL_WINDOWEVENT_RESIZED) {
-        // In practice, it seems to always be called from the same thread in
-        // that specific case. Anyway, it's just a workaround.
-        screen_render(&screen, true);
-    }
-    return 0;
-}
-#endif
-
 static bool
 is_apk(const char *file) {
     const char *ext = strrchr(file, '.');
@@ -170,7 +156,8 @@ enum event_result {
 };
 
 static enum event_result
-handle_event(SDL_Event *event, const struct scrcpy_options *options) {
+handle_event(struct scrcpy *s, const struct scrcpy_options *options,
+             SDL_Event *event) {
     switch (event->type) {
         case EVENT_STREAM_STOPPED:
             LOGD("Video stream stopped");
@@ -178,81 +165,45 @@ handle_event(SDL_Event *event, const struct scrcpy_options *options) {
         case SDL_QUIT:
             LOGD("User requested to quit");
             return EVENT_RESULT_STOPPED_BY_USER;
-        case EVENT_NEW_FRAME:
-            if (!screen.has_frame) {
-                screen.has_frame = true;
-                // this is the very first frame, show the window
-                screen_show_window(&screen);
-            }
-            if (!screen_update_frame(&screen, &video_buffer)) {
-                return EVENT_RESULT_CONTINUE;
-            }
-            break;
-        case SDL_WINDOWEVENT:
-            screen_handle_window_event(&screen, &event->window);
-            break;
-        case SDL_TEXTINPUT:
-            if (!options->control) {
-                break;
-            }
-            input_manager_process_text_input(&input_manager, &event->text);
-            break;
-        case SDL_KEYDOWN:
-        case SDL_KEYUP:
-            // some key events do not interact with the device, so process the
-            // event even if control is disabled
-            input_manager_process_key(&input_manager, &event->key);
-            break;
-        case SDL_MOUSEMOTION:
-            if (!options->control) {
-                break;
-            }
-            input_manager_process_mouse_motion(&input_manager, &event->motion);
-            break;
-        case SDL_MOUSEWHEEL:
-            if (!options->control) {
-                break;
-            }
-            input_manager_process_mouse_wheel(&input_manager, &event->wheel);
-            break;
-        case SDL_MOUSEBUTTONDOWN:
-        case SDL_MOUSEBUTTONUP:
-            // some mouse events do not interact with the device, so process
-            // the event even if control is disabled
-            input_manager_process_mouse_button(&input_manager, &event->button);
-            break;
-        case SDL_FINGERMOTION:
-        case SDL_FINGERDOWN:
-        case SDL_FINGERUP:
-            input_manager_process_touch(&input_manager, &event->tfinger);
-            break;
         case SDL_DROPFILE: {
             if (!options->control) {
                 break;
             }
+            char *file = strdup(event->drop.file);
+            SDL_free(event->drop.file);
+            if (!file) {
+                LOGW("Could not strdup drop filename\n");
+                break;
+            }
+
             file_handler_action_t action;
-            if (is_apk(event->drop.file)) {
+            if (is_apk(file)) {
                 action = ACTION_INSTALL_APK;
             } else {
                 action = ACTION_PUSH_FILE;
             }
-            file_handler_request(&file_handler, action, event->drop.file);
-            break;
+            file_handler_request(&s->file_handler, action, file);
+            goto end;
         }
     }
+
+    bool consumed = screen_handle_event(&s->screen, event);
+    if (consumed) {
+        goto end;
+    }
+
+    consumed = input_manager_handle_event(&s->input_manager, event);
+    (void) consumed;
+
+end:
     return EVENT_RESULT_CONTINUE;
 }
 
 static bool
-event_loop(const struct scrcpy_options *options) {
-#ifdef CONTINUOUS_RESIZING_WORKAROUND
-    if (options->display) {
-        SDL_AddEventWatch(event_watcher, NULL);
-    }
-#endif
+event_loop(struct scrcpy *s, const struct scrcpy_options *options) {
     SDL_Event event;
     while (SDL_WaitEvent(&event)) {
-        enum event_result result = handle_event(&event, options);
+        enum event_result result = handle_event(s, options, &event);
         switch (result) {
             case EVENT_RESULT_STOPPED_BY_USER:
                 return true;
@@ -266,6 +217,29 @@ event_loop(const struct scrcpy_options *options) {
     return false;
 }
 
+static bool
+await_for_server(void) {
+    SDL_Event event;
+    while (SDL_WaitEvent(&event)) {
+        switch (event.type) {
+            case SDL_QUIT:
+                LOGD("User requested to quit");
+                return false;
+            case EVENT_SERVER_CONNECTION_FAILED:
+                LOGE("Server connection failed");
+                return false;
+            case EVENT_SERVER_CONNECTED:
+                LOGD("Server connected");
+                return true;
+            default:
+                break;
+        }
+    }
+
+    LOGE("SDL_WaitEvent() error: %s", SDL_GetError());
+    return false;
+}
+
 static SDL_LogPriority
 sdl_priority_from_av_level(int level) {
     switch (level) {
@@ -290,22 +264,84 @@ av_log_callback(void *avcl, int level, const char *fmt, va_list vl) {
     if (priority == 0) {
         return;
     }
-    char *local_fmt = SDL_malloc(strlen(fmt) + 10);
+
+    size_t fmt_len = strlen(fmt);
+    char *local_fmt = malloc(fmt_len + 10);
     if (!local_fmt) {
         LOGC("Could not allocate string");
         return;
     }
-    // strcpy is safe here, the destination is large enough
-    strcpy(local_fmt, "[FFmpeg] ");
-    strcpy(local_fmt + 9, fmt);
+    memcpy(local_fmt, "[FFmpeg] ", 9); // do not write the final '\0'
+    memcpy(local_fmt + 9, fmt, fmt_len + 1); // include '\0'
     SDL_LogMessageV(SDL_LOG_CATEGORY_VIDEO, priority, local_fmt, vl);
-    SDL_free(local_fmt);
+    free(local_fmt);
+}
+
+static void
+stream_on_eos(struct stream *stream, void *userdata) {
+    (void) stream;
+    (void) userdata;
+
+    PUSH_EVENT(EVENT_STREAM_STOPPED);
+}
+
+static void
+sc_server_on_connection_failed(struct sc_server *server, void *userdata) {
+    (void) server;
+    (void) userdata;
+
+    PUSH_EVENT(EVENT_SERVER_CONNECTION_FAILED);
+}
+
+static void
+sc_server_on_connected(struct sc_server *server, void *userdata) {
+    (void) server;
+    (void) userdata;
+
+    PUSH_EVENT(EVENT_SERVER_CONNECTED);
+}
+
+static void
+sc_server_on_disconnected(struct sc_server *server, void *userdata) {
+    (void) server;
+    (void) userdata;
+
+    LOGD("Server disconnected");
+    // Do nothing, the disconnection will be handled by the "stream stopped"
+    // event
 }
 
 bool
-scrcpy(const struct scrcpy_options *options) {
-    bool record = !!options->record_filename;
-    struct server_params params = {
+scrcpy(struct scrcpy_options *options) {
+    static struct scrcpy scrcpy;
+    struct scrcpy *s = &scrcpy;
+
+    // Minimal SDL initialization
+    if (SDL_Init(SDL_INIT_EVENTS)) {
+        LOGC("Could not initialize SDL: %s", SDL_GetError());
+        return false;
+    }
+
+    atexit(SDL_Quit);
+
+    bool ret = false;
+
+    bool server_started = false;
+    bool file_handler_initialized = false;
+    bool recorder_initialized = false;
+#ifdef HAVE_V4L2
+    bool v4l2_sink_initialized = false;
+#endif
+    bool stream_started = false;
+#ifdef HAVE_AOA_HID
+    bool aoa_hid_initialized = false;
+#endif
+    bool controller_initialized = false;
+    bool controller_started = false;
+    bool screen_initialized = false;
+
+    struct sc_server_params params = {
+        .serial = options->serial,
         .log_level = options->log_level,
         .crop = options->crop,
         .port_range = options->port_range,
@@ -320,185 +356,304 @@ scrcpy(const struct scrcpy_options *options) {
         .codec_options = options->codec_options,
         .encoder_name = options->encoder_name,
         .force_adb_forward = options->force_adb_forward,
+        .power_off_on_close = options->power_off_on_close,
     };
-    if (!server_start(&server, options->serial, &params)) {
+
+    static const struct sc_server_callbacks cbs = {
+        .on_connection_failed = sc_server_on_connection_failed,
+        .on_connected = sc_server_on_connected,
+        .on_disconnected = sc_server_on_disconnected,
+    };
+    if (!sc_server_init(&s->server, &params, &cbs, NULL)) {
         return false;
     }
 
-    bool ret = false;
-
-    bool fps_counter_initialized = false;
-    bool video_buffer_initialized = false;
-    bool file_handler_initialized = false;
-    bool recorder_initialized = false;
-    bool stream_started = false;
-    bool controller_initialized = false;
-    bool controller_started = false;
-
-    if (!sdl_init_and_configure(options->display, options->render_driver,
-                                options->disable_screensaver)) {
+    if (!sc_server_start(&s->server)) {
         goto end;
     }
 
-    if (!server_connect_to(&server)) {
+    server_started = true;
+
+    if (options->display) {
+        sdl_set_hints(options->render_driver);
+    }
+
+    // Initialize SDL video in addition if display is enabled
+    if (options->display && SDL_Init(SDL_INIT_VIDEO)) {
+        LOGC("Could not initialize SDL: %s", SDL_GetError());
         goto end;
     }
 
-    char device_name[DEVICE_NAME_FIELD_LENGTH];
-    struct size frame_size;
+    sdl_configure(options->display, options->disable_screensaver);
 
-    // screenrecord does not send frames when the screen content does not
-    // change therefore, we transmit the screen size before the video stream,
-    // to be able to init the window immediately
-    if (!device_read_info(server.video_socket, device_name, &frame_size)) {
+    // Await for server without blocking Ctrl+C handling
+    if (!await_for_server()) {
         goto end;
     }
 
+    // It is necessarily initialized here, since the device is connected
+    struct sc_server_info *info = &s->server.info;
+
+    if (options->display && options->control) {
+        if (!file_handler_init(&s->file_handler, options->serial,
+                               options->push_target)) {
+            goto end;
+        }
+        file_handler_initialized = true;
+    }
+
     struct decoder *dec = NULL;
-    if (options->display) {
-        if (!fps_counter_init(&fps_counter)) {
-            goto end;
-        }
-        fps_counter_initialized = true;
-
-        if (!video_buffer_init(&video_buffer, &fps_counter,
-                               options->render_expired_frames)) {
-            goto end;
-        }
-        video_buffer_initialized = true;
-
-        if (options->control) {
-            if (!file_handler_init(&file_handler, server.serial,
-                                   options->push_target)) {
-                goto end;
-            }
-            file_handler_initialized = true;
-        }
-
-        decoder_init(&decoder, &video_buffer);
-        dec = &decoder;
+    bool needs_decoder = options->display;
+#ifdef HAVE_V4L2
+    needs_decoder |= !!options->v4l2_device;
+#endif
+    if (needs_decoder) {
+        decoder_init(&s->decoder);
+        dec = &s->decoder;
     }
 
     struct recorder *rec = NULL;
-    if (record) {
-        if (!recorder_init(&recorder,
+    if (options->record_filename) {
+        if (!recorder_init(&s->recorder,
                            options->record_filename,
                            options->record_format,
-                           frame_size)) {
+                           info->frame_size)) {
             goto end;
         }
-        rec = &recorder;
+        rec = &s->recorder;
         recorder_initialized = true;
     }
 
     av_log_set_callback(av_log_callback);
 
-    stream_init(&stream, server.video_socket, dec, rec);
+    static const struct stream_callbacks stream_cbs = {
+        .on_eos = stream_on_eos,
+    };
+    stream_init(&s->stream, s->server.video_socket, &stream_cbs, NULL);
 
-    // now we consumed the header values, the socket receives the video stream
-    // start the stream
-    if (!stream_start(&stream)) {
-        goto end;
+    if (dec) {
+        stream_add_sink(&s->stream, &dec->packet_sink);
     }
-    stream_started = true;
 
-    if (options->display) {
-        if (options->control) {
-            if (!controller_init(&controller, server.control_socket)) {
-                goto end;
-            }
-            controller_initialized = true;
+    if (rec) {
+        stream_add_sink(&s->stream, &rec->packet_sink);
+    }
 
-            if (!controller_start(&controller)) {
-                goto end;
-            }
-            controller_started = true;
-        }
-
-        const char *window_title =
-            options->window_title ? options->window_title : device_name;
-
-        if (!screen_init_rendering(&screen, window_title, frame_size,
-                                   options->always_on_top, options->window_x,
-                                   options->window_y, options->window_width,
-                                   options->window_height,
-                                   options->window_borderless,
-                                   options->rotation, options->mipmaps)) {
+    if (options->control) {
+        if (!controller_init(&s->controller, s->server.control_socket)) {
             goto end;
         }
+        controller_initialized = true;
+
+        if (!controller_start(&s->controller)) {
+            goto end;
+        }
+        controller_started = true;
 
         if (options->turn_screen_off) {
             struct control_msg msg;
             msg.type = CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE;
             msg.set_screen_power_mode.mode = SCREEN_POWER_MODE_OFF;
 
-            if (!controller_push_msg(&controller, &msg)) {
+            if (!controller_push_msg(&s->controller, &msg)) {
                 LOGW("Could not request 'set screen power mode'");
             }
         }
-
-        if (options->fullscreen) {
-            screen_switch_fullscreen(&screen);
-        }
     }
 
-    input_manager_init(&input_manager, options);
+    if (options->display) {
+        const char *window_title =
+            options->window_title ? options->window_title : info->device_name;
 
-    ret = event_loop(options);
+        struct screen_params screen_params = {
+            .window_title = window_title,
+            .frame_size = info->frame_size,
+            .always_on_top = options->always_on_top,
+            .window_x = options->window_x,
+            .window_y = options->window_y,
+            .window_width = options->window_width,
+            .window_height = options->window_height,
+            .window_borderless = options->window_borderless,
+            .rotation = options->rotation,
+            .mipmaps = options->mipmaps,
+            .fullscreen = options->fullscreen,
+            .buffering_time = options->display_buffer,
+        };
+
+        if (!screen_init(&s->screen, &screen_params)) {
+            goto end;
+        }
+        screen_initialized = true;
+
+        decoder_add_sink(&s->decoder, &s->screen.frame_sink);
+    }
+
+#ifdef HAVE_V4L2
+    if (options->v4l2_device) {
+        if (!sc_v4l2_sink_init(&s->v4l2_sink, options->v4l2_device,
+                               info->frame_size, options->v4l2_buffer)) {
+            goto end;
+        }
+
+        decoder_add_sink(&s->decoder, &s->v4l2_sink.frame_sink);
+
+        v4l2_sink_initialized = true;
+    }
+#endif
+
+    // now we consumed the header values, the socket receives the video stream
+    // start the stream
+    if (!stream_start(&s->stream)) {
+        goto end;
+    }
+    stream_started = true;
+
+    struct sc_key_processor *kp = NULL;
+    struct sc_mouse_processor *mp = NULL;
+
+    if (options->control) {
+        if (options->keyboard_input_mode == SC_KEYBOARD_INPUT_MODE_HID) {
+#ifdef HAVE_AOA_HID
+            bool aoa_hid_ok = false;
+
+            char *serialno = NULL;
+
+            const char *serial = options->serial;
+            if (!serial) {
+                serialno = adb_get_serialno();
+                if (!serialno) {
+                    LOGE("Could not get device serial");
+                    goto aoa_hid_end;
+                }
+                serial = serialno;
+                LOGI("Device serial: %s", serial);
+            }
+
+            bool ok = sc_aoa_init(&s->aoa, serial);
+            free(serialno);
+            if (!ok) {
+                goto aoa_hid_end;
+            }
+
+            if (!sc_hid_keyboard_init(&s->keyboard_hid, &s->aoa)) {
+                sc_aoa_destroy(&s->aoa);
+                goto aoa_hid_end;
+            }
+
+            if (!sc_aoa_start(&s->aoa)) {
+                sc_hid_keyboard_destroy(&s->keyboard_hid);
+                sc_aoa_destroy(&s->aoa);
+                goto aoa_hid_end;
+            }
+
+            aoa_hid_ok = true;
+            kp = &s->keyboard_hid.key_processor;
+
+            aoa_hid_initialized = true;
+
+aoa_hid_end:
+            if (!aoa_hid_ok) {
+                LOGE("Failed to enable HID over AOA, "
+                     "fallback to default keyboard injection method "
+                     "(-K/--hid-keyboard ignored)");
+                options->keyboard_input_mode = SC_KEYBOARD_INPUT_MODE_INJECT;
+            }
+#else
+            LOGE("HID over AOA is not supported on this platform, "
+                 "fallback to default keyboard injection method "
+                 "(-K/--hid-keyboard ignored)");
+            options->keyboard_input_mode = SC_KEYBOARD_INPUT_MODE_INJECT;
+#endif
+        }
+
+        // keyboard_input_mode may have been reset if HID mode failed
+        if (options->keyboard_input_mode == SC_KEYBOARD_INPUT_MODE_INJECT) {
+            sc_keyboard_inject_init(&s->keyboard_inject, &s->controller,
+                                    options);
+            kp = &s->keyboard_inject.key_processor;
+        }
+
+        sc_mouse_inject_init(&s->mouse_inject, &s->controller, &s->screen);
+        mp = &s->mouse_inject.mouse_processor;
+    }
+
+    input_manager_init(&s->input_manager, &s->controller, &s->screen, kp, mp,
+                       options);
+
+    ret = event_loop(s, options);
     LOGD("quit...");
 
-    screen_destroy(&screen);
+    // Close the window immediately on closing, because screen_destroy() may
+    // only be called once the stream thread is joined (it may take time)
+    screen_hide_window(&s->screen);
 
 end:
-    // stop stream and controller so that they don't continue once their socket
-    // is shutdown
-    if (stream_started) {
-        stream_stop(&stream);
+    // The stream is not stopped explicitly, because it will stop by itself on
+    // end-of-stream
+#ifdef HAVE_AOA_HID
+    if (aoa_hid_initialized) {
+        sc_hid_keyboard_destroy(&s->keyboard_hid);
+        sc_aoa_stop(&s->aoa);
     }
+#endif
     if (controller_started) {
-        controller_stop(&controller);
+        controller_stop(&s->controller);
     }
     if (file_handler_initialized) {
-        file_handler_stop(&file_handler);
+        file_handler_stop(&s->file_handler);
     }
-    if (fps_counter_initialized) {
-        fps_counter_interrupt(&fps_counter);
+    if (screen_initialized) {
+        screen_interrupt(&s->screen);
     }
 
-    // shutdown the sockets and kill the server
-    server_stop(&server);
+    if (server_started) {
+        // shutdown the sockets and kill the server
+        sc_server_stop(&s->server);
+    }
 
     // now that the sockets are shutdown, the stream and controller are
     // interrupted, we can join them
     if (stream_started) {
-        stream_join(&stream);
+        stream_join(&s->stream);
     }
+
+#ifdef HAVE_V4L2
+    if (v4l2_sink_initialized) {
+        sc_v4l2_sink_destroy(&s->v4l2_sink);
+    }
+#endif
+
+#ifdef HAVE_AOA_HID
+    if (aoa_hid_initialized) {
+        sc_aoa_join(&s->aoa);
+        sc_aoa_destroy(&s->aoa);
+    }
+#endif
+
+    // Destroy the screen only after the stream is guaranteed to be finished,
+    // because otherwise the screen could receive new frames after destruction
+    if (screen_initialized) {
+        screen_join(&s->screen);
+        screen_destroy(&s->screen);
+    }
+
     if (controller_started) {
-        controller_join(&controller);
+        controller_join(&s->controller);
     }
     if (controller_initialized) {
-        controller_destroy(&controller);
+        controller_destroy(&s->controller);
     }
 
     if (recorder_initialized) {
-        recorder_destroy(&recorder);
+        recorder_destroy(&s->recorder);
     }
 
     if (file_handler_initialized) {
-        file_handler_join(&file_handler);
-        file_handler_destroy(&file_handler);
+        file_handler_join(&s->file_handler);
+        file_handler_destroy(&s->file_handler);
     }
 
-    if (video_buffer_initialized) {
-        video_buffer_destroy(&video_buffer);
-    }
-
-    if (fps_counter_initialized) {
-        fps_counter_join(&fps_counter);
-        fps_counter_destroy(&fps_counter);
-    }
-
-    server_destroy(&server);
+    sc_server_destroy(&s->server);
 
     return ret;
 }

app/src/scrcpy.h

@@ -1,137 +1,12 @@
 #ifndef SCRCPY_H
 #define SCRCPY_H
 
+#include "common.h"
+
 #include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-
-#include "config.h"
-
-enum sc_log_level {
-    SC_LOG_LEVEL_DEBUG,
-    SC_LOG_LEVEL_INFO,
-    SC_LOG_LEVEL_WARN,
-    SC_LOG_LEVEL_ERROR,
-};
-
-enum sc_record_format {
-    SC_RECORD_FORMAT_AUTO,
-    SC_RECORD_FORMAT_MP4,
-    SC_RECORD_FORMAT_MKV,
-};
-
-#define SC_MAX_SHORTCUT_MODS 8
-
-enum sc_shortcut_mod {
-    SC_MOD_LCTRL = 1 << 0,
-    SC_MOD_RCTRL = 1 << 1,
-    SC_MOD_LALT = 1 << 2,
-    SC_MOD_RALT = 1 << 3,
-    SC_MOD_LSUPER = 1 << 4,
-    SC_MOD_RSUPER = 1 << 5,
-};
-
-struct sc_shortcut_mods {
-    unsigned data[SC_MAX_SHORTCUT_MODS];
-    unsigned count;
-};
-
-struct sc_port_range {
-    uint16_t first;
-    uint16_t last;
-};
-
-#define SC_WINDOW_POSITION_UNDEFINED (-0x8000)
-
-struct scrcpy_options {
-    const char *serial;
-    const char *crop;
-    const char *record_filename;
-    const char *window_title;
-    const char *push_target;
-    const char *render_driver;
-    const char *codec_options;
-    const char *encoder_name;
-    enum sc_log_level log_level;
-    enum sc_record_format record_format;
-    struct sc_port_range port_range;
-    struct sc_shortcut_mods shortcut_mods;
-    uint16_t max_size;
-    uint32_t bit_rate;
-    uint16_t max_fps;
-    int8_t lock_video_orientation;
-    uint8_t rotation;
-    int16_t window_x; // SC_WINDOW_POSITION_UNDEFINED for "auto"
-    int16_t window_y; // SC_WINDOW_POSITION_UNDEFINED for "auto"
-    uint16_t window_width;
-    uint16_t window_height;
-    uint16_t display_id;
-    bool show_touches;
-    bool fullscreen;
-    bool always_on_top;
-    bool control;
-    bool display;
-    bool turn_screen_off;
-    bool render_expired_frames;
-    bool prefer_text;
-    bool window_borderless;
-    bool mipmaps;
-    bool stay_awake;
-    bool force_adb_forward;
-    bool disable_screensaver;
-    bool forward_key_repeat;
-    bool forward_all_clicks;
-    bool legacy_paste;
-};
-
-#define SCRCPY_OPTIONS_DEFAULT { \
-    .serial = NULL, \
-    .crop = NULL, \
-    .record_filename = NULL, \
-    .window_title = NULL, \
-    .push_target = NULL, \
-    .render_driver = NULL, \
-    .codec_options = NULL, \
-    .encoder_name = NULL, \
-    .log_level = SC_LOG_LEVEL_INFO, \
-    .record_format = SC_RECORD_FORMAT_AUTO, \
-    .port_range = { \
-        .first = DEFAULT_LOCAL_PORT_RANGE_FIRST, \
-        .last = DEFAULT_LOCAL_PORT_RANGE_LAST, \
-    }, \
-    .shortcut_mods = { \
-        .data = {SC_MOD_LALT, SC_MOD_LSUPER}, \
-        .count = 2, \
-    }, \
-    .max_size = DEFAULT_MAX_SIZE, \
-    .bit_rate = DEFAULT_BIT_RATE, \
-    .max_fps = 0, \
-    .lock_video_orientation = DEFAULT_LOCK_VIDEO_ORIENTATION, \
-    .rotation = 0, \
-    .window_x = SC_WINDOW_POSITION_UNDEFINED, \
-    .window_y = SC_WINDOW_POSITION_UNDEFINED, \
-    .window_width = 0, \
-    .window_height = 0, \
-    .display_id = 0, \
-    .show_touches = false, \
-    .fullscreen = false, \
-    .always_on_top = false, \
-    .control = true, \
-    .display = true, \
-    .turn_screen_off = false, \
-    .render_expired_frames = false, \
-    .prefer_text = false, \
-    .window_borderless = false, \
-    .mipmaps = true, \
-    .stay_awake = false, \
-    .force_adb_forward = false, \
-    .disable_screensaver = false, \
-    .forward_key_repeat = true, \
-    .forward_all_clicks = false, \
-    .legacy_paste = false, \
-}
+#include "options.h"
 
 bool
-scrcpy(const struct scrcpy_options *options);
+scrcpy(struct scrcpy_options *options);
 
 #endif

app/src/screen.c

@@ -4,21 +4,19 @@
 #include <string.h>
 #include <SDL2/SDL.h>
 
-#include "config.h"
-#include "common.h"
-#include "compat.h"
-#include "icon.xpm"
-#include "scrcpy.h"
-#include "tiny_xpm.h"
+#include "events.h"
+#include "icon.h"
+#include "options.h"
 #include "video_buffer.h"
-#include "util/lock.h"
 #include "util/log.h"
 
 #define DISPLAY_MARGINS 96
 
-static inline struct size
-get_rotated_size(struct size size, int rotation) {
-    struct size rotated_size;
+#define DOWNCAST(SINK) container_of(SINK, struct screen, frame_sink)
+
+static inline struct sc_size
+get_rotated_size(struct sc_size size, int rotation) {
+    struct sc_size rotated_size;
     if (rotation & 1) {
         rotated_size.width = size.height;
         rotated_size.height = size.width;
@@ -29,22 +27,34 @@ get_rotated_size(struct size size, int rotation) {
     return rotated_size;
 }
 
-// get the window size in a struct size
-static struct size
+// get the window size in a struct sc_size
+static struct sc_size
 get_window_size(const struct screen *screen) {
     int width;
     int height;
     SDL_GetWindowSize(screen->window, &width, &height);
 
-    struct size size;
+    struct sc_size size;
     size.width = width;
     size.height = height;
     return size;
 }
 
+static struct sc_point
+get_window_position(const struct screen *screen) {
+    int x;
+    int y;
+    SDL_GetWindowPosition(screen->window, &x, &y);
+
+    struct sc_point point;
+    point.x = x;
+    point.y = y;
+    return point;
+}
+
 // set the window size to be applied when fullscreen is disabled
 static void
-set_window_size(struct screen *screen, struct size new_size) {
+set_window_size(struct screen *screen, struct sc_size new_size) {
     assert(!screen->fullscreen);
     assert(!screen->maximized);
     SDL_SetWindowSize(screen->window, new_size.width, new_size.height);
@@ -52,7 +62,7 @@ set_window_size(struct screen *screen, struct size new_size) {
 
 // get the preferred display bounds (i.e. the screen bounds with some margins)
 static bool
-get_preferred_display_bounds(struct size *bounds) {
+get_preferred_display_bounds(struct sc_size *bounds) {
     SDL_Rect rect;
 #ifdef SCRCPY_SDL_HAS_GET_DISPLAY_USABLE_BOUNDS
 # define GET_DISPLAY_BOUNDS(i, r) SDL_GetDisplayUsableBounds((i), (r))
@@ -70,7 +80,7 @@ get_preferred_display_bounds(struct size *bounds) {
 }
 
 static bool
-is_optimal_size(struct size current_size, struct size content_size) {
+is_optimal_size(struct sc_size current_size, struct sc_size content_size) {
     // The size is optimal if we can recompute one dimension of the current
     // size from the other
     return current_size.height == current_size.width * content_size.height
@@ -84,16 +94,16 @@ is_optimal_size(struct size current_size, struct size content_size) {
 //    crops the black borders)
 //  - it keeps the aspect ratio
 //  - it scales down to make it fit in the display_size
-static struct size
-get_optimal_size(struct size current_size, struct size content_size) {
+static struct sc_size
+get_optimal_size(struct sc_size current_size, struct sc_size content_size) {
     if (content_size.width == 0 || content_size.height == 0) {
         // avoid division by 0
         return current_size;
     }
 
-    struct size window_size;
+    struct sc_size window_size;
 
-    struct size display_size;
+    struct sc_size display_size;
     if (!get_preferred_display_bounds(&display_size)) {
         // could not get display bounds, do not constraint the size
         window_size.width = current_size.width;
@@ -123,19 +133,12 @@ get_optimal_size(struct size current_size, struct size content_size) {
     return window_size;
 }
 
-// same as get_optimal_size(), but read the current size from the window
-static inline struct size
-get_optimal_window_size(const struct screen *screen, struct size content_size) {
-    struct size window_size = get_window_size(screen);
-    return get_optimal_size(window_size, content_size);
-}
-
 // initially, there is no current size, so use the frame size as current size
 // req_width and req_height, if not 0, are the sizes requested by the user
-static inline struct size
-get_initial_optimal_size(struct size content_size, uint16_t req_width,
+static inline struct sc_size
+get_initial_optimal_size(struct sc_size content_size, uint16_t req_width,
                          uint16_t req_height) {
-    struct size window_size;
+    struct sc_size window_size;
     if (!req_width && !req_height) {
         window_size = get_optimal_size(content_size, content_size);
     } else {
@@ -163,9 +166,9 @@ screen_update_content_rect(struct screen *screen) {
     int dh;
     SDL_GL_GetDrawableSize(screen->window, &dw, &dh);
 
-    struct size content_size = screen->content_size;
+    struct sc_size content_size = screen->content_size;
     // The drawable size is the window size * the HiDPI scale
-    struct size drawable_size = {dw, dh};
+    struct sc_size drawable_size = {dw, dh};
 
     SDL_Rect *rect = &screen->rect;
 
@@ -194,15 +197,10 @@ screen_update_content_rect(struct screen *screen) {
     }
 }
 
-void
-screen_init(struct screen *screen) {
-    *screen = (struct screen) SCREEN_INITIALIZER;
-}
-
 static inline SDL_Texture *
 create_texture(struct screen *screen) {
     SDL_Renderer *renderer = screen->renderer;
-    struct size size = screen->frame_size;
+    struct sc_size size = screen->frame_size;
     SDL_Texture *texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_YV12,
                                              SDL_TEXTUREACCESS_STREAMING,
                                              size.width, size.height);
@@ -226,252 +224,11 @@ create_texture(struct screen *screen) {
     return texture;
 }
 
-bool
-screen_init_rendering(struct screen *screen, const char *window_title,
-                      struct size frame_size, bool always_on_top,
-                      int16_t window_x, int16_t window_y, uint16_t window_width,
-                      uint16_t window_height, bool window_borderless,
-                      uint8_t rotation, bool mipmaps) {
-    screen->frame_size = frame_size;
-    screen->rotation = rotation;
-    if (rotation) {
-        LOGI("Initial display rotation set to %u", rotation);
-    }
-    struct size content_size = get_rotated_size(frame_size, screen->rotation);
-    screen->content_size = content_size;
-
-    struct size window_size =
-        get_initial_optimal_size(content_size, window_width, window_height);
-    uint32_t window_flags = SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE;
-#ifdef HIDPI_SUPPORT
-    window_flags |= SDL_WINDOW_ALLOW_HIGHDPI;
-#endif
-    if (always_on_top) {
-#ifdef SCRCPY_SDL_HAS_WINDOW_ALWAYS_ON_TOP
-        window_flags |= SDL_WINDOW_ALWAYS_ON_TOP;
-#else
-        LOGW("The 'always on top' flag is not available "
-             "(compile with SDL >= 2.0.5 to enable it)");
-#endif
-    }
-    if (window_borderless) {
-        window_flags |= SDL_WINDOW_BORDERLESS;
-    }
-
-    int x = window_x != SC_WINDOW_POSITION_UNDEFINED
-          ? window_x : (int) SDL_WINDOWPOS_UNDEFINED;
-    int y = window_y != SC_WINDOW_POSITION_UNDEFINED
-          ? window_y : (int) SDL_WINDOWPOS_UNDEFINED;
-    screen->window = SDL_CreateWindow(window_title, x, y,
-                                      window_size.width, window_size.height,
-                                      window_flags);
-    if (!screen->window) {
-        LOGC("Could not create window: %s", SDL_GetError());
-        return false;
-    }
-
-    screen->renderer = SDL_CreateRenderer(screen->window, -1,
-                                          SDL_RENDERER_ACCELERATED);
-    if (!screen->renderer) {
-        LOGC("Could not create renderer: %s", SDL_GetError());
-        screen_destroy(screen);
-        return false;
-    }
-
-    SDL_RendererInfo renderer_info;
-    int r = SDL_GetRendererInfo(screen->renderer, &renderer_info);
-    const char *renderer_name = r ? NULL : renderer_info.name;
-    LOGI("Renderer: %s", renderer_name ? renderer_name : "(unknown)");
-
-    // starts with "opengl"
-    screen->use_opengl = renderer_name && !strncmp(renderer_name, "opengl", 6);
-    if (screen->use_opengl) {
-        struct sc_opengl *gl = &screen->gl;
-        sc_opengl_init(gl);
-
-        LOGI("OpenGL version: %s", gl->version);
-
-        if (mipmaps) {
-            bool supports_mipmaps =
-                sc_opengl_version_at_least(gl, 3, 0, /* OpenGL 3.0+ */
-                                               2, 0  /* OpenGL ES 2.0+ */);
-            if (supports_mipmaps) {
-                LOGI("Trilinear filtering enabled");
-                screen->mipmaps = true;
-            } else {
-                LOGW("Trilinear filtering disabled "
-                     "(OpenGL 3.0+ or ES 2.0+ required)");
-            }
-        } else {
-            LOGI("Trilinear filtering disabled");
-        }
-    } else {
-        LOGD("Trilinear filtering disabled (not an OpenGL renderer)");
-    }
-
-    SDL_Surface *icon = read_xpm(icon_xpm);
-    if (icon) {
-        SDL_SetWindowIcon(screen->window, icon);
-        SDL_FreeSurface(icon);
-    } else {
-        LOGW("Could not load icon");
-    }
-
-    LOGI("Initial texture: %" PRIu16 "x%" PRIu16, frame_size.width,
-                                                  frame_size.height);
-    screen->texture = create_texture(screen);
-    if (!screen->texture) {
-        LOGC("Could not create texture: %s", SDL_GetError());
-        screen_destroy(screen);
-        return false;
-    }
-
-    // Reset the window size to trigger a SIZE_CHANGED event, to workaround
-    // HiDPI issues with some SDL renderers when several displays having
-    // different HiDPI scaling are connected
-    SDL_SetWindowSize(screen->window, window_size.width, window_size.height);
-
-    screen_update_content_rect(screen);
-
-    return true;
-}
-
-void
-screen_show_window(struct screen *screen) {
-    SDL_ShowWindow(screen->window);
-}
-
-void
-screen_destroy(struct screen *screen) {
-    if (screen->texture) {
-        SDL_DestroyTexture(screen->texture);
-    }
-    if (screen->renderer) {
-        SDL_DestroyRenderer(screen->renderer);
-    }
-    if (screen->window) {
-        SDL_DestroyWindow(screen->window);
-    }
-}
-
+// render the texture to the renderer
+//
+// Set the update_content_rect flag if the window or content size may have
+// changed, so that the content rectangle is recomputed
 static void
-resize_for_content(struct screen *screen, struct size old_content_size,
-                                                 struct size new_content_size) {
-    struct size window_size = get_window_size(screen);
-    struct size target_size = {
-        .width = (uint32_t) window_size.width * new_content_size.width
-                / old_content_size.width,
-        .height = (uint32_t) window_size.height * new_content_size.height
-                / old_content_size.height,
-    };
-    target_size = get_optimal_size(target_size, new_content_size);
-    set_window_size(screen, target_size);
-}
-
-static void
-set_content_size(struct screen *screen, struct size new_content_size) {
-    if (!screen->fullscreen && !screen->maximized) {
-        resize_for_content(screen, screen->content_size, new_content_size);
-    } else if (!screen->resize_pending) {
-        // Store the windowed size to be able to compute the optimal size once
-        // fullscreen and maximized are disabled
-        screen->windowed_content_size = screen->content_size;
-        screen->resize_pending = true;
-    }
-
-    screen->content_size = new_content_size;
-}
-
-static void
-apply_pending_resize(struct screen *screen) {
-    assert(!screen->fullscreen);
-    assert(!screen->maximized);
-    if (screen->resize_pending) {
-        resize_for_content(screen, screen->windowed_content_size,
-                                   screen->content_size);
-        screen->resize_pending = false;
-    }
-}
-
-void
-screen_set_rotation(struct screen *screen, unsigned rotation) {
-    assert(rotation < 4);
-    if (rotation == screen->rotation) {
-        return;
-    }
-
-    struct size new_content_size =
-        get_rotated_size(screen->frame_size, rotation);
-
-    set_content_size(screen, new_content_size);
-
-    screen->rotation = rotation;
-    LOGI("Display rotation set to %u", rotation);
-
-    screen_render(screen, true);
-}
-
-// recreate the texture and resize the window if the frame size has changed
-static bool
-prepare_for_frame(struct screen *screen, struct size new_frame_size) {
-    if (screen->frame_size.width != new_frame_size.width
-            || screen->frame_size.height != new_frame_size.height) {
-        // frame dimension changed, destroy texture
-        SDL_DestroyTexture(screen->texture);
-
-        screen->frame_size = new_frame_size;
-
-        struct size new_content_size =
-            get_rotated_size(new_frame_size, screen->rotation);
-        set_content_size(screen, new_content_size);
-
-        screen_update_content_rect(screen);
-
-        LOGI("New texture: %" PRIu16 "x%" PRIu16,
-                     screen->frame_size.width, screen->frame_size.height);
-        screen->texture = create_texture(screen);
-        if (!screen->texture) {
-            LOGC("Could not create texture: %s", SDL_GetError());
-            return false;
-        }
-    }
-
-    return true;
-}
-
-// write the frame into the texture
-static void
-update_texture(struct screen *screen, const AVFrame *frame) {
-    SDL_UpdateYUVTexture(screen->texture, NULL,
-            frame->data[0], frame->linesize[0],
-            frame->data[1], frame->linesize[1],
-            frame->data[2], frame->linesize[2]);
-
-    if (screen->mipmaps) {
-        assert(screen->use_opengl);
-        SDL_GL_BindTexture(screen->texture, NULL, NULL);
-        screen->gl.GenerateMipmap(GL_TEXTURE_2D);
-        SDL_GL_UnbindTexture(screen->texture);
-    }
-}
-
-bool
-screen_update_frame(struct screen *screen, struct video_buffer *vb) {
-    mutex_lock(vb->mutex);
-    const AVFrame *frame = video_buffer_consume_rendered_frame(vb);
-    struct size new_frame_size = {frame->width, frame->height};
-    if (!prepare_for_frame(screen, new_frame_size)) {
-        mutex_unlock(vb->mutex);
-        return false;
-    }
-    update_texture(screen, frame);
-    mutex_unlock(vb->mutex);
-
-    screen_render(screen, false);
-    return true;
-}
-
-void
 screen_render(struct screen *screen, bool update_content_rect) {
     if (update_content_rect) {
         screen_update_content_rect(screen);
@@ -505,6 +262,425 @@ screen_render(struct screen *screen, bool update_content_rect) {
     SDL_RenderPresent(screen->renderer);
 }
 
+
+#if defined(__APPLE__) || defined(__WINDOWS__)
+# define CONTINUOUS_RESIZING_WORKAROUND
+#endif
+
+#ifdef CONTINUOUS_RESIZING_WORKAROUND
+// On Windows and MacOS, resizing blocks the event loop, so resizing events are
+// not triggered. As a workaround, handle them in an event handler.
+//
+// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
+// <https://stackoverflow.com/a/40693139/1987178>
+static int
+event_watcher(void *data, SDL_Event *event) {
+    struct screen *screen = data;
+    if (event->type == SDL_WINDOWEVENT
+            && event->window.event == SDL_WINDOWEVENT_RESIZED) {
+        // In practice, it seems to always be called from the same thread in
+        // that specific case. Anyway, it's just a workaround.
+        screen_render(screen, true);
+    }
+    return 0;
+}
+#endif
+
+static bool
+screen_frame_sink_open(struct sc_frame_sink *sink) {
+    struct screen *screen = DOWNCAST(sink);
+    (void) screen;
+#ifndef NDEBUG
+    screen->open = true;
+#endif
+
+    // nothing to do, the screen is already open on the main thread
+    return true;
+}
+
+static void
+screen_frame_sink_close(struct sc_frame_sink *sink) {
+    struct screen *screen = DOWNCAST(sink);
+    (void) screen;
+#ifndef NDEBUG
+    screen->open = false;
+#endif
+
+    // nothing to do, the screen lifecycle is not managed by the frame producer
+}
+
+static bool
+screen_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
+    struct screen *screen = DOWNCAST(sink);
+    return sc_video_buffer_push(&screen->vb, frame);
+}
+
+static void
+sc_video_buffer_on_new_frame(struct sc_video_buffer *vb, bool previous_skipped,
+                             void *userdata) {
+    (void) vb;
+    struct screen *screen = userdata;
+
+    // event_failed implies previous_skipped (the previous frame may not have
+    // been consumed if the event was not sent)
+    assert(!screen->event_failed || previous_skipped);
+
+    bool need_new_event;
+    if (previous_skipped) {
+        fps_counter_add_skipped_frame(&screen->fps_counter);
+        // The EVENT_NEW_FRAME triggered for the previous frame will consume
+        // this new frame instead, unless the previous event failed
+        need_new_event = screen->event_failed;
+    } else {
+        need_new_event = true;
+    }
+
+    if (need_new_event) {
+        static SDL_Event new_frame_event = {
+            .type = EVENT_NEW_FRAME,
+        };
+
+        // Post the event on the UI thread
+        int ret = SDL_PushEvent(&new_frame_event);
+        if (ret < 0) {
+            LOGW("Could not post new frame event: %s", SDL_GetError());
+            screen->event_failed = true;
+        } else {
+            screen->event_failed = false;
+        }
+    }
+}
+
+bool
+screen_init(struct screen *screen, const struct screen_params *params) {
+    screen->resize_pending = false;
+    screen->has_frame = false;
+    screen->fullscreen = false;
+    screen->maximized = false;
+    screen->event_failed = false;
+
+    static const struct sc_video_buffer_callbacks cbs = {
+        .on_new_frame = sc_video_buffer_on_new_frame,
+    };
+
+    bool ok = sc_video_buffer_init(&screen->vb, params->buffering_time, &cbs,
+                                   screen);
+    if (!ok) {
+        LOGE("Could not initialize video buffer");
+        return false;
+    }
+
+    ok = sc_video_buffer_start(&screen->vb);
+    if (!ok) {
+        LOGE("Could not start video_buffer");
+        goto error_destroy_video_buffer;
+    }
+
+    if (!fps_counter_init(&screen->fps_counter)) {
+        LOGE("Could not initialize FPS counter");
+        goto error_stop_and_join_video_buffer;
+    }
+
+    screen->frame_size = params->frame_size;
+    screen->rotation = params->rotation;
+    if (screen->rotation) {
+        LOGI("Initial display rotation set to %u", screen->rotation);
+    }
+    struct sc_size content_size =
+        get_rotated_size(screen->frame_size, screen->rotation);
+    screen->content_size = content_size;
+
+    struct sc_size window_size =
+        get_initial_optimal_size(content_size,params->window_width,
+                                 params->window_height);
+    uint32_t window_flags = SDL_WINDOW_HIDDEN
+                          | SDL_WINDOW_RESIZABLE
+                          | SDL_WINDOW_ALLOW_HIGHDPI;
+    if (params->always_on_top) {
+#ifdef SCRCPY_SDL_HAS_WINDOW_ALWAYS_ON_TOP
+        window_flags |= SDL_WINDOW_ALWAYS_ON_TOP;
+#else
+        LOGW("The 'always on top' flag is not available "
+             "(compile with SDL >= 2.0.5 to enable it)");
+#endif
+    }
+    if (params->window_borderless) {
+        window_flags |= SDL_WINDOW_BORDERLESS;
+    }
+
+    int x = params->window_x != SC_WINDOW_POSITION_UNDEFINED
+          ? params->window_x : (int) SDL_WINDOWPOS_UNDEFINED;
+    int y = params->window_y != SC_WINDOW_POSITION_UNDEFINED
+          ? params->window_y : (int) SDL_WINDOWPOS_UNDEFINED;
+    screen->window = SDL_CreateWindow(params->window_title, x, y,
+                                      window_size.width, window_size.height,
+                                      window_flags);
+    if (!screen->window) {
+        LOGC("Could not create window: %s", SDL_GetError());
+        goto error_destroy_fps_counter;
+    }
+
+    screen->renderer = SDL_CreateRenderer(screen->window, -1,
+                                          SDL_RENDERER_ACCELERATED);
+    if (!screen->renderer) {
+        LOGC("Could not create renderer: %s", SDL_GetError());
+        goto error_destroy_window;
+    }
+
+    SDL_RendererInfo renderer_info;
+    int r = SDL_GetRendererInfo(screen->renderer, &renderer_info);
+    const char *renderer_name = r ? NULL : renderer_info.name;
+    LOGI("Renderer: %s", renderer_name ? renderer_name : "(unknown)");
+
+    screen->mipmaps = false;
+
+    // starts with "opengl"
+    bool use_opengl = renderer_name && !strncmp(renderer_name, "opengl", 6);
+    if (use_opengl) {
+        struct sc_opengl *gl = &screen->gl;
+        sc_opengl_init(gl);
+
+        LOGI("OpenGL version: %s", gl->version);
+
+        if (params->mipmaps) {
+            bool supports_mipmaps =
+                sc_opengl_version_at_least(gl, 3, 0, /* OpenGL 3.0+ */
+                                               2, 0  /* OpenGL ES 2.0+ */);
+            if (supports_mipmaps) {
+                LOGI("Trilinear filtering enabled");
+                screen->mipmaps = true;
+            } else {
+                LOGW("Trilinear filtering disabled "
+                     "(OpenGL 3.0+ or ES 2.0+ required)");
+            }
+        } else {
+            LOGI("Trilinear filtering disabled");
+        }
+    } else if (params->mipmaps) {
+        LOGD("Trilinear filtering disabled (not an OpenGL renderer)");
+    }
+
+    SDL_Surface *icon = scrcpy_icon_load();
+    if (icon) {
+        SDL_SetWindowIcon(screen->window, icon);
+        scrcpy_icon_destroy(icon);
+    } else {
+        LOGW("Could not load icon");
+    }
+
+    LOGI("Initial texture: %" PRIu16 "x%" PRIu16, params->frame_size.width,
+                                                  params->frame_size.height);
+    screen->texture = create_texture(screen);
+    if (!screen->texture) {
+        LOGC("Could not create texture: %s", SDL_GetError());
+        goto error_destroy_renderer;
+    }
+
+    screen->frame = av_frame_alloc();
+    if (!screen->frame) {
+        LOGC("Could not create screen frame");
+        goto error_destroy_texture;
+    }
+
+    // Reset the window size to trigger a SIZE_CHANGED event, to workaround
+    // HiDPI issues with some SDL renderers when several displays having
+    // different HiDPI scaling are connected
+    SDL_SetWindowSize(screen->window, window_size.width, window_size.height);
+
+    screen_update_content_rect(screen);
+
+    if (params->fullscreen) {
+        screen_switch_fullscreen(screen);
+    }
+
+#ifdef CONTINUOUS_RESIZING_WORKAROUND
+    SDL_AddEventWatch(event_watcher, screen);
+#endif
+
+    static const struct sc_frame_sink_ops ops = {
+        .open = screen_frame_sink_open,
+        .close = screen_frame_sink_close,
+        .push = screen_frame_sink_push,
+    };
+
+    screen->frame_sink.ops = &ops;
+
+#ifndef NDEBUG
+    screen->open = false;
+#endif
+
+    return true;
+
+error_destroy_texture:
+    SDL_DestroyTexture(screen->texture);
+error_destroy_renderer:
+    SDL_DestroyRenderer(screen->renderer);
+error_destroy_window:
+    SDL_DestroyWindow(screen->window);
+error_destroy_fps_counter:
+    fps_counter_destroy(&screen->fps_counter);
+error_stop_and_join_video_buffer:
+    sc_video_buffer_stop(&screen->vb);
+    sc_video_buffer_join(&screen->vb);
+error_destroy_video_buffer:
+    sc_video_buffer_destroy(&screen->vb);
+
+    return false;
+}
+
+static void
+screen_show_window(struct screen *screen) {
+    SDL_ShowWindow(screen->window);
+}
+
+void
+screen_hide_window(struct screen *screen) {
+    SDL_HideWindow(screen->window);
+}
+
+void
+screen_interrupt(struct screen *screen) {
+    sc_video_buffer_stop(&screen->vb);
+    fps_counter_interrupt(&screen->fps_counter);
+}
+
+void
+screen_join(struct screen *screen) {
+    sc_video_buffer_join(&screen->vb);
+    fps_counter_join(&screen->fps_counter);
+}
+
+void
+screen_destroy(struct screen *screen) {
+#ifndef NDEBUG
+    assert(!screen->open);
+#endif
+    av_frame_free(&screen->frame);
+    SDL_DestroyTexture(screen->texture);
+    SDL_DestroyRenderer(screen->renderer);
+    SDL_DestroyWindow(screen->window);
+    fps_counter_destroy(&screen->fps_counter);
+    sc_video_buffer_destroy(&screen->vb);
+}
+
+static void
+resize_for_content(struct screen *screen, struct sc_size old_content_size,
+                   struct sc_size new_content_size) {
+    struct sc_size window_size = get_window_size(screen);
+    struct sc_size target_size = {
+        .width = (uint32_t) window_size.width * new_content_size.width
+                / old_content_size.width,
+        .height = (uint32_t) window_size.height * new_content_size.height
+                / old_content_size.height,
+    };
+    target_size = get_optimal_size(target_size, new_content_size);
+    set_window_size(screen, target_size);
+}
+
+static void
+set_content_size(struct screen *screen, struct sc_size new_content_size) {
+    if (!screen->fullscreen && !screen->maximized) {
+        resize_for_content(screen, screen->content_size, new_content_size);
+    } else if (!screen->resize_pending) {
+        // Store the windowed size to be able to compute the optimal size once
+        // fullscreen and maximized are disabled
+        screen->windowed_content_size = screen->content_size;
+        screen->resize_pending = true;
+    }
+
+    screen->content_size = new_content_size;
+}
+
+static void
+apply_pending_resize(struct screen *screen) {
+    assert(!screen->fullscreen);
+    assert(!screen->maximized);
+    if (screen->resize_pending) {
+        resize_for_content(screen, screen->windowed_content_size,
+                                   screen->content_size);
+        screen->resize_pending = false;
+    }
+}
+
+void
+screen_set_rotation(struct screen *screen, unsigned rotation) {
+    assert(rotation < 4);
+    if (rotation == screen->rotation) {
+        return;
+    }
+
+    struct sc_size new_content_size =
+        get_rotated_size(screen->frame_size, rotation);
+
+    set_content_size(screen, new_content_size);
+
+    screen->rotation = rotation;
+    LOGI("Display rotation set to %u", rotation);
+
+    screen_render(screen, true);
+}
+
+// recreate the texture and resize the window if the frame size has changed
+static bool
+prepare_for_frame(struct screen *screen, struct sc_size new_frame_size) {
+    if (screen->frame_size.width != new_frame_size.width
+            || screen->frame_size.height != new_frame_size.height) {
+        // frame dimension changed, destroy texture
+        SDL_DestroyTexture(screen->texture);
+
+        screen->frame_size = new_frame_size;
+
+        struct sc_size new_content_size =
+            get_rotated_size(new_frame_size, screen->rotation);
+        set_content_size(screen, new_content_size);
+
+        screen_update_content_rect(screen);
+
+        LOGI("New texture: %" PRIu16 "x%" PRIu16,
+                     screen->frame_size.width, screen->frame_size.height);
+        screen->texture = create_texture(screen);
+        if (!screen->texture) {
+            LOGC("Could not create texture: %s", SDL_GetError());
+            return false;
+        }
+    }
+
+    return true;
+}
+
+// write the frame into the texture
+static void
+update_texture(struct screen *screen, const AVFrame *frame) {
+    SDL_UpdateYUVTexture(screen->texture, NULL,
+            frame->data[0], frame->linesize[0],
+            frame->data[1], frame->linesize[1],
+            frame->data[2], frame->linesize[2]);
+
+    if (screen->mipmaps) {
+        SDL_GL_BindTexture(screen->texture, NULL, NULL);
+        screen->gl.GenerateMipmap(GL_TEXTURE_2D);
+        SDL_GL_UnbindTexture(screen->texture);
+    }
+}
+
+static bool
+screen_update_frame(struct screen *screen) {
+    av_frame_unref(screen->frame);
+    sc_video_buffer_consume(&screen->vb, screen->frame);
+    AVFrame *frame = screen->frame;
+
+    fps_counter_add_rendered_frame(&screen->fps_counter);
+
+    struct sc_size new_frame_size = {frame->width, frame->height};
+    if (!prepare_for_frame(screen, new_frame_size)) {
+        return false;
+    }
+    update_texture(screen, frame);
+
+    screen_render(screen, false);
+    return true;
+}
+
 void
 screen_switch_fullscreen(struct screen *screen) {
     uint32_t new_mode = screen->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP;
@@ -528,9 +704,20 @@ screen_resize_to_fit(struct screen *screen) {
         return;
     }
 
-    struct size optimal_size =
-        get_optimal_window_size(screen, screen->content_size);
+    struct sc_point point = get_window_position(screen);
+    struct sc_size window_size = get_window_size(screen);
+
+    struct sc_size optimal_size =
+        get_optimal_size(window_size, screen->content_size);
+
+    // Center the window related to the device screen
+    assert(optimal_size.width <= window_size.width);
+    assert(optimal_size.height <= window_size.height);
+    uint32_t new_x = point.x + (window_size.width - optimal_size.width) / 2;
+    uint32_t new_y = point.y + (window_size.height - optimal_size.height) / 2;
+
     SDL_SetWindowSize(screen->window, optimal_size.width, optimal_size.height);
+    SDL_SetWindowPosition(screen->window, new_x, new_y);
     LOGD("Resized to optimal size: %ux%u", optimal_size.width,
                                            optimal_size.height);
 }
@@ -546,40 +733,62 @@ screen_resize_to_pixel_perfect(struct screen *screen) {
         screen->maximized = false;
     }
 
-    struct size content_size = screen->content_size;
+    struct sc_size content_size = screen->content_size;
     SDL_SetWindowSize(screen->window, content_size.width, content_size.height);
     LOGD("Resized to pixel-perfect: %ux%u", content_size.width,
                                             content_size.height);
 }
 
-void
-screen_handle_window_event(struct screen *screen,
-                           const SDL_WindowEvent *event) {
-    switch (event->event) {
-        case SDL_WINDOWEVENT_EXPOSED:
-            screen_render(screen, true);
-            break;
-        case SDL_WINDOWEVENT_SIZE_CHANGED:
-            screen_render(screen, true);
-            break;
-        case SDL_WINDOWEVENT_MAXIMIZED:
-            screen->maximized = true;
-            break;
-        case SDL_WINDOWEVENT_RESTORED:
-            if (screen->fullscreen) {
-                // On Windows, in maximized+fullscreen, disabling fullscreen
-                // mode unexpectedly triggers the "restored" then "maximized"
-                // events, leaving the window in a weird state (maximized
-                // according to the events, but not maximized visually).
-                break;
+bool
+screen_handle_event(struct screen *screen, SDL_Event *event) {
+    switch (event->type) {
+        case EVENT_NEW_FRAME:
+            if (!screen->has_frame) {
+                screen->has_frame = true;
+                // this is the very first frame, show the window
+                screen_show_window(screen);
             }
-            screen->maximized = false;
-            apply_pending_resize(screen);
-            break;
+            bool ok = screen_update_frame(screen);
+            if (!ok) {
+                LOGW("Frame update failed\n");
+            }
+            return true;
+        case SDL_WINDOWEVENT:
+            if (!screen->has_frame) {
+                // Do nothing
+                return true;
+            }
+            switch (event->window.event) {
+                case SDL_WINDOWEVENT_EXPOSED:
+                    screen_render(screen, true);
+                    break;
+                case SDL_WINDOWEVENT_SIZE_CHANGED:
+                    screen_render(screen, true);
+                    break;
+                case SDL_WINDOWEVENT_MAXIMIZED:
+                    screen->maximized = true;
+                    break;
+                case SDL_WINDOWEVENT_RESTORED:
+                    if (screen->fullscreen) {
+                        // On Windows, in maximized+fullscreen, disabling
+                        // fullscreen mode unexpectedly triggers the "restored"
+                        // then "maximized" events, leaving the window in a
+                        // weird state (maximized according to the events, but
+                        // not maximized visually).
+                        break;
+                    }
+                    screen->maximized = false;
+                    apply_pending_resize(screen);
+                    screen_render(screen, true);
+                    break;
+            }
+            return true;
     }
+
+    return false;
 }
 
-struct point
+struct sc_point
 screen_convert_drawable_to_frame_coords(struct screen *screen,
                                         int32_t x, int32_t y) {
     unsigned rotation = screen->rotation;
@@ -593,7 +802,7 @@ screen_convert_drawable_to_frame_coords(struct screen *screen,
     y = (int64_t) (y - screen->rect.y) * h / screen->rect.h;
 
     // rotate
-    struct point result;
+    struct sc_point result;
     switch (rotation) {
         case 0:
             result.x = x;
@@ -616,7 +825,7 @@ screen_convert_drawable_to_frame_coords(struct screen *screen,
     return result;
 }
 
-struct point
+struct sc_point
 screen_convert_window_to_frame_coords(struct screen *screen,
                                       int32_t x, int32_t y) {
     screen_hidpi_scale_coords(screen, &x, &y);

app/src/screen.h

@@ -1,29 +1,39 @@
 #ifndef SCREEN_H
 #define SCREEN_H
 
+#include "common.h"
+
 #include <stdbool.h>
 #include <SDL2/SDL.h>
 #include <libavformat/avformat.h>
 
-#include "config.h"
-#include "common.h"
+#include "coords.h"
+#include "fps_counter.h"
 #include "opengl.h"
-
-struct video_buffer;
+#include "trait/frame_sink.h"
+#include "video_buffer.h"
 
 struct screen {
+    struct sc_frame_sink frame_sink; // frame sink trait
+
+#ifndef NDEBUG
+    bool open; // track the open/close state to assert correct behavior
+#endif
+
+    struct sc_video_buffer vb;
+    struct fps_counter fps_counter;
+
     SDL_Window *window;
     SDL_Renderer *renderer;
     SDL_Texture *texture;
-    bool use_opengl;
     struct sc_opengl gl;
-    struct size frame_size;
-    struct size content_size; // rotated frame_size
+    struct sc_size frame_size;
+    struct sc_size content_size; // rotated frame_size
 
     bool resize_pending; // resize requested while fullscreen or maximized
     // The content size the last time the window was not maximized or
     // fullscreen (meaningful only when resize_pending is true)
-    struct size windowed_content_size;
+    struct sc_size windowed_content_size;
 
     // client rotation: 0, 1, 2 or 3 (x90 degrees counterclockwise)
     unsigned rotation;
@@ -32,74 +42,56 @@ struct screen {
     bool has_frame;
     bool fullscreen;
     bool maximized;
-    bool no_window;
     bool mipmaps;
+
+    bool event_failed; // in case SDL_PushEvent() returned an error
+
+    AVFrame *frame;
 };
 
-#define SCREEN_INITIALIZER { \
-    .window = NULL, \
-    .renderer = NULL, \
-    .texture = NULL, \
-    .use_opengl = false, \
-    .gl = {0}, \
-    .frame_size = { \
-        .width = 0, \
-        .height = 0, \
-    }, \
-    .content_size = { \
-        .width = 0, \
-        .height = 0, \
-    }, \
-    .resize_pending = false, \
-    .windowed_content_size = { \
-        .width = 0, \
-        .height = 0, \
-    }, \
-    .rotation = 0, \
-    .rect = { \
-        .x = 0, \
-        .y = 0, \
-        .w = 0, \
-        .h = 0, \
-    }, \
-    .has_frame = false, \
-    .fullscreen = false, \
-    .maximized = false, \
-    .no_window = false, \
-    .mipmaps = false, \
-}
+struct screen_params {
+    const char *window_title;
+    struct sc_size frame_size;
+    bool always_on_top;
 
-// initialize default values
-void
-screen_init(struct screen *screen);
+    int16_t window_x;
+    int16_t window_y;
+    uint16_t window_width;  // accepts SC_WINDOW_POSITION_UNDEFINED
+    uint16_t window_height; // accepts SC_WINDOW_POSITION_UNDEFINED
+
+    bool window_borderless;
+
+    uint8_t rotation;
+    bool mipmaps;
+
+    bool fullscreen;
+
+    sc_tick buffering_time;
+};
 
 // initialize screen, create window, renderer and texture (window is hidden)
-// window_x and window_y accept SC_WINDOW_POSITION_UNDEFINED
 bool
-screen_init_rendering(struct screen *screen, const char *window_title,
-                      struct size frame_size, bool always_on_top,
-                      int16_t window_x, int16_t window_y, uint16_t window_width,
-                      uint16_t window_height, bool window_borderless,
-                      uint8_t rotation, bool mipmaps);
+screen_init(struct screen *screen, const struct screen_params *params);
 
-// show the window
+// request to interrupt any inner thread
+// must be called before screen_join()
 void
-screen_show_window(struct screen *screen);
+screen_interrupt(struct screen *screen);
+
+// join any inner thread
+void
+screen_join(struct screen *screen);
 
 // destroy window, renderer and texture (if any)
 void
 screen_destroy(struct screen *screen);
 
-// resize if necessary and write the rendered frame into the texture
-bool
-screen_update_frame(struct screen *screen, struct video_buffer *vb);
-
-// render the texture to the renderer
+// hide the window
 //
-// Set the update_content_rect flag if the window or content size may have
-// changed, so that the content rectangle is recomputed
+// It is used to hide the window immediately on closing without waiting for
+// screen_destroy()
 void
-screen_render(struct screen *screen, bool update_content_rect);
+screen_hide_window(struct screen *screen);
 
 // switch the fullscreen mode
 void
@@ -117,19 +109,19 @@ screen_resize_to_pixel_perfect(struct screen *screen);
 void
 screen_set_rotation(struct screen *screen, unsigned rotation);
 
-// react to window events
-void
-screen_handle_window_event(struct screen *screen, const SDL_WindowEvent *event);
+// react to SDL events
+bool
+screen_handle_event(struct screen *screen, SDL_Event *event);
 
 // convert point from window coordinates to frame coordinates
 // x and y are expressed in pixels
-struct point
+struct sc_point
 screen_convert_window_to_frame_coords(struct screen *screen,
                                       int32_t x, int32_t y);
 
 // convert point from drawable coordinates to frame coordinates
 // x and y are expressed in pixels
-struct point
+struct sc_point
 screen_convert_drawable_to_frame_coords(struct screen *screen,
                                         int32_t x, int32_t y);
 

app/src/server.c

@@ -3,23 +3,21 @@
 #include <assert.h>
 #include <errno.h>
 #include <inttypes.h>
-#include <libgen.h>
 #include <stdio.h>
-#include <SDL2/SDL_thread.h>
 #include <SDL2/SDL_timer.h>
 #include <SDL2/SDL_platform.h>
 
-#include "config.h"
-#include "command.h"
+#include "adb.h"
+#include "util/file.h"
 #include "util/log.h"
-#include "util/net.h"
-#include "util/str_util.h"
+#include "util/net_intr.h"
+#include "util/process_intr.h"
+#include "util/str.h"
 
-#define SOCKET_NAME "scrcpy"
-#define SERVER_FILENAME "scrcpy-server"
+#define SC_SERVER_FILENAME "scrcpy-server"
 
-#define DEFAULT_SERVER_PATH PREFIX "/share/scrcpy/" SERVER_FILENAME
-#define DEVICE_SERVER_PATH "/data/local/tmp/scrcpy-server.jar"
+#define SC_SERVER_PATH_DEFAULT PREFIX "/share/scrcpy/" SC_SERVER_FILENAME
+#define SC_DEVICE_SERVER_PATH "/data/local/tmp/scrcpy-server.jar"
 
 static char *
 get_server_path(void) {
@@ -31,9 +29,9 @@ get_server_path(void) {
     if (server_path_env) {
         // if the envvar is set, use it
 #ifdef __WINDOWS__
-        char *server_path = utf8_from_wide_char(server_path_env);
+        char *server_path = sc_str_from_wchars(server_path_env);
 #else
-        char *server_path = SDL_strdup(server_path_env);
+        char *server_path = strdup(server_path_env);
 #endif
         if (!server_path) {
             LOGE("Could not allocate memory");
@@ -44,199 +42,86 @@ get_server_path(void) {
     }
 
 #ifndef PORTABLE
-    LOGD("Using server: " DEFAULT_SERVER_PATH);
-    char *server_path = SDL_strdup(DEFAULT_SERVER_PATH);
+    LOGD("Using server: " SC_SERVER_PATH_DEFAULT);
+    char *server_path = strdup(SC_SERVER_PATH_DEFAULT);
     if (!server_path) {
         LOGE("Could not allocate memory");
         return NULL;
     }
-    // the absolute path is hardcoded
-    return server_path;
 #else
-
-    // use scrcpy-server in the same directory as the executable
-    char *executable_path = get_executable_path();
-    if (!executable_path) {
-        LOGE("Could not get executable path, "
-             "using " SERVER_FILENAME " from current directory");
-        // not found, use current directory
-        return SERVER_FILENAME;
-    }
-    char *dir = dirname(executable_path);
-    size_t dirlen = strlen(dir);
-
-    // sizeof(SERVER_FILENAME) gives statically the size including the null byte
-    size_t len = dirlen + 1 + sizeof(SERVER_FILENAME);
-    char *server_path = SDL_malloc(len);
+    char *server_path = sc_file_get_local_path(SC_SERVER_FILENAME);
     if (!server_path) {
-        LOGE("Could not alloc server path string, "
-             "using " SERVER_FILENAME " from current directory");
-        SDL_free(executable_path);
-        return SERVER_FILENAME;
+        LOGE("Could not get local file path, "
+             "using " SC_SERVER_FILENAME " from current directory");
+        return strdup(SC_SERVER_FILENAME);
     }
 
-    memcpy(server_path, dir, dirlen);
-    server_path[dirlen] = PATH_SEPARATOR;
-    memcpy(&server_path[dirlen + 1], SERVER_FILENAME, sizeof(SERVER_FILENAME));
-    // the final null byte has been copied with SERVER_FILENAME
-
-    SDL_free(executable_path);
-
     LOGD("Using server (portable): %s", server_path);
-    return server_path;
 #endif
+
+    return server_path;
+}
+
+static void
+sc_server_params_destroy(struct sc_server_params *params) {
+    // The server stores a copy of the params provided by the user
+    free((char *) params->serial);
+    free((char *) params->crop);
+    free((char *) params->codec_options);
+    free((char *) params->encoder_name);
 }
 
 static bool
-push_server(const char *serial) {
+sc_server_params_copy(struct sc_server_params *dst,
+                      const struct sc_server_params *src) {
+    *dst = *src;
+
+    // The params reference user-allocated memory, so we must copy them to
+    // handle them from another thread
+
+#define COPY(FIELD) \
+    dst->FIELD = NULL; \
+    if (src->FIELD) { \
+        dst->FIELD = strdup(src->FIELD); \
+        if (!dst->FIELD) { \
+            goto error; \
+        } \
+    }
+
+    COPY(serial);
+    COPY(crop);
+    COPY(codec_options);
+    COPY(encoder_name);
+#undef COPY
+
+    return true;
+
+error:
+    sc_server_params_destroy(dst);
+    return false;
+}
+
+static bool
+push_server(struct sc_intr *intr, const char *serial) {
     char *server_path = get_server_path();
     if (!server_path) {
         return false;
     }
-    if (!is_regular_file(server_path)) {
+    if (!sc_file_is_regular(server_path)) {
         LOGE("'%s' does not exist or is not a regular file\n", server_path);
-        SDL_free(server_path);
+        free(server_path);
         return false;
     }
-    process_t process = adb_push(serial, server_path, DEVICE_SERVER_PATH);
-    SDL_free(server_path);
-    return process_check_success(process, "adb push");
-}
-
-static bool
-enable_tunnel_reverse(const char *serial, uint16_t local_port) {
-    process_t process = adb_reverse(serial, SOCKET_NAME, local_port);
-    return process_check_success(process, "adb reverse");
-}
-
-static bool
-disable_tunnel_reverse(const char *serial) {
-    process_t process = adb_reverse_remove(serial, SOCKET_NAME);
-    return process_check_success(process, "adb reverse --remove");
-}
-
-static bool
-enable_tunnel_forward(const char *serial, uint16_t local_port) {
-    process_t process = adb_forward(serial, local_port, SOCKET_NAME);
-    return process_check_success(process, "adb forward");
-}
-
-static bool
-disable_tunnel_forward(const char *serial, uint16_t local_port) {
-    process_t process = adb_forward_remove(serial, local_port);
-    return process_check_success(process, "adb forward --remove");
-}
-
-static bool
-disable_tunnel(struct server *server) {
-    if (server->tunnel_forward) {
-        return disable_tunnel_forward(server->serial, server->local_port);
-    }
-    return disable_tunnel_reverse(server->serial);
-}
-
-static socket_t
-listen_on_port(uint16_t port) {
-#define IPV4_LOCALHOST 0x7F000001
-    return net_listen(IPV4_LOCALHOST, port, 1);
-}
-
-static bool
-enable_tunnel_reverse_any_port(struct server *server,
-                               struct sc_port_range port_range) {
-    uint16_t port = port_range.first;
-    for (;;) {
-        if (!enable_tunnel_reverse(server->serial, port)) {
-            // the command itself failed, it will fail on any port
-            return false;
-        }
-
-        // At the application level, the device part is "the server" because it
-        // serves video stream and control. However, at the network level, the
-        // client listens and the server connects to the client. That way, the
-        // client can listen before starting the server app, so there is no
-        // need to try to connect until the server socket is listening on the
-        // device.
-        server->server_socket = listen_on_port(port);
-        if (server->server_socket != INVALID_SOCKET) {
-            // success
-            server->local_port = port;
-            return true;
-        }
-
-        // failure, disable tunnel and try another port
-        if (!disable_tunnel_reverse(server->serial)) {
-            LOGW("Could not remove reverse tunnel on port %" PRIu16, port);
-        }
-
-        // check before incrementing to avoid overflow on port 65535
-        if (port < port_range.last) {
-            LOGW("Could not listen on port %" PRIu16", retrying on %" PRIu16,
-                 port, (uint16_t) (port + 1));
-            port++;
-            continue;
-        }
-
-        if (port_range.first == port_range.last) {
-            LOGE("Could not listen on port %" PRIu16, port_range.first);
-        } else {
-            LOGE("Could not listen on any port in range %" PRIu16 ":%" PRIu16,
-                 port_range.first, port_range.last);
-        }
-        return false;
-    }
-}
-
-static bool
-enable_tunnel_forward_any_port(struct server *server,
-                               struct sc_port_range port_range) {
-    server->tunnel_forward = true;
-    uint16_t port = port_range.first;
-    for (;;) {
-        if (enable_tunnel_forward(server->serial, port)) {
-            // success
-            server->local_port = port;
-            return true;
-        }
-
-        if (port < port_range.last) {
-            LOGW("Could not forward port %" PRIu16", retrying on %" PRIu16,
-                 port, (uint16_t) (port + 1));
-            port++;
-            continue;
-        }
-
-        if (port_range.first == port_range.last) {
-            LOGE("Could not forward port %" PRIu16, port_range.first);
-        } else {
-            LOGE("Could not forward any port in range %" PRIu16 ":%" PRIu16,
-                 port_range.first, port_range.last);
-        }
-        return false;
-    }
-}
-
-static bool
-enable_tunnel_any_port(struct server *server, struct sc_port_range port_range,
-                       bool force_adb_forward) {
-    if (!force_adb_forward) {
-        // Attempt to use "adb reverse"
-        if (enable_tunnel_reverse_any_port(server, port_range)) {
-            return true;
-        }
-
-        // if "adb reverse" does not work (e.g. over "adb connect"), it
-        // fallbacks to "adb forward", so the app socket is the client
-
-        LOGW("'adb reverse' failed, fallback to 'adb forward'");
-    }
-
-    return enable_tunnel_forward_any_port(server, port_range);
+    sc_pid pid = adb_push(serial, server_path, SC_DEVICE_SERVER_PATH);
+    free(server_path);
+    return sc_process_check_success_intr(intr, pid, "adb push");
 }
 
 static const char *
 log_level_to_server_string(enum sc_log_level level) {
     switch (level) {
+        case SC_LOG_LEVEL_VERBOSE:
+            return "verbose";
         case SC_LOG_LEVEL_DEBUG:
             return "debug";
         case SC_LOG_LEVEL_INFO:
@@ -251,27 +136,32 @@ log_level_to_server_string(enum sc_log_level level) {
     }
 }
 
-static process_t
-execute_server(struct server *server, const struct server_params *params) {
+static sc_pid
+execute_server(struct sc_server *server,
+               const struct sc_server_params *params) {
+    const char *serial = server->params.serial;
+
     char max_size_string[6];
     char bit_rate_string[11];
     char max_fps_string[6];
     char lock_video_orientation_string[5];
-    char display_id_string[6];
+    char display_id_string[11];
     sprintf(max_size_string, "%"PRIu16, params->max_size);
     sprintf(bit_rate_string, "%"PRIu32, params->bit_rate);
     sprintf(max_fps_string, "%"PRIu16, params->max_fps);
-    sprintf(lock_video_orientation_string, "%"PRIi8, params->lock_video_orientation);
-    sprintf(display_id_string, "%"PRIu16, params->display_id);
+    sprintf(lock_video_orientation_string, "%"PRIi8,
+            params->lock_video_orientation);
+    sprintf(display_id_string, "%"PRIu32, params->display_id);
     const char *const cmd[] = {
         "shell",
-        "CLASSPATH=" DEVICE_SERVER_PATH,
+        "CLASSPATH=" SC_DEVICE_SERVER_PATH,
         "app_process",
 #ifdef SERVER_DEBUGGER
 # define SERVER_DEBUGGER_PORT "5005"
 # ifdef SERVER_DEBUGGER_METHOD_NEW
         /* Android 9 and above */
-        "-XjdwpProvider:internal -XjdwpOptions:transport=dt_socket,suspend=y,server=y,address="
+        "-XjdwpProvider:internal -XjdwpOptions:transport=dt_socket,suspend=y,"
+        "server=y,address="
 # else
         /* Android 8 and below */
         "-agentlib:jdwp=transport=dt_socket,suspend=y,server=y,address="
@@ -286,7 +176,7 @@ execute_server(struct server *server, const struct server_params *params) {
         bit_rate_string,
         max_fps_string,
         lock_video_orientation_string,
-        server->tunnel_forward ? "true" : "false",
+        server->tunnel.forward ? "true" : "false",
         params->crop ? params->crop : "-",
         "true", // always send frame meta (packet boundaries + timestamp)
         params->control ? "true" : "false",
@@ -295,6 +185,7 @@ execute_server(struct server *server, const struct server_params *params) {
         params->stay_awake ? "true" : "false",
         params->codec_options ? params->codec_options : "-",
         params->encoder_name ? params->encoder_name : "-",
+        params->power_off_on_close ? "true" : "false",
     };
 #ifdef SERVER_DEBUGGER
     LOGI("Server debugger waiting for a client on device port "
@@ -307,203 +198,340 @@ execute_server(struct server *server, const struct server_params *params) {
     //     Port: 5005
     // Then click on "Debug"
 #endif
-    return adb_execute(server->serial, cmd, sizeof(cmd) / sizeof(cmd[0]));
+    return adb_execute(serial, cmd, ARRAY_LEN(cmd));
 }
 
-static socket_t
-connect_and_read_byte(uint16_t port) {
-    socket_t socket = net_connect(IPV4_LOCALHOST, port);
-    if (socket == INVALID_SOCKET) {
-        return INVALID_SOCKET;
+static bool
+connect_and_read_byte(struct sc_intr *intr, sc_socket socket, uint16_t port) {
+    bool ok = net_connect_intr(intr, socket, IPV4_LOCALHOST, port);
+    if (!ok) {
+        return false;
     }
 
     char byte;
     // the connection may succeed even if the server behind the "adb tunnel"
     // is not listening, so read one byte to detect a working connection
-    if (net_recv(socket, &byte, 1) != 1) {
+    if (net_recv_intr(intr, socket, &byte, 1) != 1) {
         // the server is not listening yet behind the adb tunnel
-        net_close(socket);
-        return INVALID_SOCKET;
+        return false;
     }
-    return socket;
-}
-
-static socket_t
-connect_to_server(uint16_t port, uint32_t attempts, uint32_t delay) {
-    do {
-        LOGD("Remaining connection attempts: %d", (int) attempts);
-        socket_t socket = connect_and_read_byte(port);
-        if (socket != INVALID_SOCKET) {
-            // it worked!
-            return socket;
-        }
-        if (attempts) {
-            SDL_Delay(delay);
-        }
-    } while (--attempts > 0);
-    return INVALID_SOCKET;
-}
-
-static void
-close_socket(socket_t socket) {
-    assert(socket != INVALID_SOCKET);
-    net_shutdown(socket, SHUT_RDWR);
-    if (!net_close(socket)) {
-        LOGW("Could not close socket");
-    }
-}
-
-void
-server_init(struct server *server) {
-    *server = (struct server) SERVER_INITIALIZER;
-}
-
-static int
-run_wait_server(void *data) {
-    struct server *server = data;
-    cmd_simple_wait(server->process, NULL); // ignore exit code
-    // no need for synchronization, server_socket is initialized before this
-    // thread was created
-    if (server->server_socket != INVALID_SOCKET
-            && !atomic_flag_test_and_set(&server->server_socket_closed)) {
-        // On Linux, accept() is unblocked by shutdown(), but on Windows, it is
-        // unblocked by closesocket(). Therefore, call both (close_socket()).
-        close_socket(server->server_socket);
-    }
-    LOGD("Server terminated");
-    return 0;
-}
-
-bool
-server_start(struct server *server, const char *serial,
-             const struct server_params *params) {
-    server->port_range = params->port_range;
-
-    if (serial) {
-        server->serial = SDL_strdup(serial);
-        if (!server->serial) {
-            return false;
-        }
-    }
-
-    if (!push_server(serial)) {
-        goto error1;
-    }
-
-    if (!enable_tunnel_any_port(server, params->port_range,
-                                params->force_adb_forward)) {
-        goto error1;
-    }
-
-    // server will connect to our server socket
-    server->process = execute_server(server, params);
-    if (server->process == PROCESS_NONE) {
-        goto error2;
-    }
-
-    // If the server process dies before connecting to the server socket, then
-    // the client will be stuck forever on accept(). To avoid the problem, we
-    // must be able to wake up the accept() call when the server dies. To keep
-    // things simple and multiplatform, just spawn a new thread waiting for the
-    // server process and calling shutdown()/close() on the server socket if
-    // necessary to wake up any accept() blocking call.
-    server->wait_server_thread =
-        SDL_CreateThread(run_wait_server, "wait-server", server);
-    if (!server->wait_server_thread) {
-        cmd_terminate(server->process);
-        cmd_simple_wait(server->process, NULL); // ignore exit code
-        goto error2;
-    }
-
-    server->tunnel_enabled = true;
 
     return true;
+}
 
-error2:
-    if (!server->tunnel_forward) {
-        bool was_closed =
-            atomic_flag_test_and_set(&server->server_socket_closed);
-        // the thread is not started, the flag could not be already set
-        assert(!was_closed);
-        (void) was_closed;
-        close_socket(server->server_socket);
-    }
-    disable_tunnel(server);
-error1:
-    SDL_free(server->serial);
-    return false;
+static sc_socket
+connect_to_server(struct sc_server *server, uint32_t attempts, sc_tick delay) {
+    uint16_t port = server->tunnel.local_port;
+    do {
+        LOGD("Remaining connection attempts: %d", (int) attempts);
+        sc_socket socket = net_socket();
+        if (socket != SC_SOCKET_NONE) {
+            bool ok = connect_and_read_byte(&server->intr, socket, port);
+            if (ok) {
+                // it worked!
+                return socket;
+            }
+
+            net_close(socket);
+        }
+
+        if (sc_intr_is_interrupted(&server->intr)) {
+            // Stop immediately
+            break;
+        }
+
+        if (attempts) {
+            sc_mutex_lock(&server->mutex);
+            sc_tick deadline = sc_tick_now() + delay;
+            bool timed_out = false;
+            while (!server->stopped && !timed_out) {
+                timed_out = !sc_cond_timedwait(&server->cond_stopped,
+                                               &server->mutex, deadline);
+            }
+            bool stopped = server->stopped;
+            sc_mutex_unlock(&server->mutex);
+
+            if (stopped) {
+                LOGI("Connection attempt stopped");
+                break;
+            }
+        }
+    } while (--attempts > 0);
+    return SC_SOCKET_NONE;
 }
 
 bool
-server_connect_to(struct server *server) {
-    if (!server->tunnel_forward) {
-        server->video_socket = net_accept(server->server_socket);
-        if (server->video_socket == INVALID_SOCKET) {
-            return false;
+sc_server_init(struct sc_server *server, const struct sc_server_params *params,
+              const struct sc_server_callbacks *cbs, void *cbs_userdata) {
+    bool ok = sc_server_params_copy(&server->params, params);
+    if (!ok) {
+        LOGE("Could not copy server params");
+        return false;
+    }
+
+    ok = sc_mutex_init(&server->mutex);
+    if (!ok) {
+        LOGE("Could not create server mutex");
+        sc_server_params_destroy(&server->params);
+        return false;
+    }
+
+    ok = sc_cond_init(&server->cond_stopped);
+    if (!ok) {
+        LOGE("Could not create server cond_stopped");
+        sc_mutex_destroy(&server->mutex);
+        sc_server_params_destroy(&server->params);
+        return false;
+    }
+
+    ok = sc_intr_init(&server->intr);
+    if (!ok) {
+        LOGE("Could not create intr");
+        sc_cond_destroy(&server->cond_stopped);
+        sc_mutex_destroy(&server->mutex);
+        sc_server_params_destroy(&server->params);
+        return false;
+    }
+
+    server->stopped = false;
+
+    server->video_socket = SC_SOCKET_NONE;
+    server->control_socket = SC_SOCKET_NONE;
+
+    sc_adb_tunnel_init(&server->tunnel);
+
+    assert(cbs);
+    assert(cbs->on_connection_failed);
+    assert(cbs->on_connected);
+    assert(cbs->on_disconnected);
+
+    server->cbs = cbs;
+    server->cbs_userdata = cbs_userdata;
+
+    return true;
+}
+
+static bool
+device_read_info(struct sc_intr *intr, sc_socket device_socket,
+                 struct sc_server_info *info) {
+    unsigned char buf[SC_DEVICE_NAME_FIELD_LENGTH + 4];
+    ssize_t r = net_recv_all_intr(intr, device_socket, buf, sizeof(buf));
+    if (r < SC_DEVICE_NAME_FIELD_LENGTH + 4) {
+        LOGE("Could not retrieve device information");
+        return false;
+    }
+    // in case the client sends garbage
+    buf[SC_DEVICE_NAME_FIELD_LENGTH - 1] = '\0';
+    memcpy(info->device_name, (char *) buf, sizeof(info->device_name));
+
+    info->frame_size.width = (buf[SC_DEVICE_NAME_FIELD_LENGTH] << 8)
+                           | buf[SC_DEVICE_NAME_FIELD_LENGTH + 1];
+    info->frame_size.height = (buf[SC_DEVICE_NAME_FIELD_LENGTH + 2] << 8)
+                            | buf[SC_DEVICE_NAME_FIELD_LENGTH + 3];
+    return true;
+}
+
+static bool
+sc_server_connect_to(struct sc_server *server, struct sc_server_info *info) {
+    struct sc_adb_tunnel *tunnel = &server->tunnel;
+
+    assert(tunnel->enabled);
+
+    const char *serial = server->params.serial;
+
+    sc_socket video_socket = SC_SOCKET_NONE;
+    sc_socket control_socket = SC_SOCKET_NONE;
+    if (!tunnel->forward) {
+        video_socket = net_accept_intr(&server->intr, tunnel->server_socket);
+        if (video_socket == SC_SOCKET_NONE) {
+            goto fail;
         }
 
-        server->control_socket = net_accept(server->server_socket);
-        if (server->control_socket == INVALID_SOCKET) {
-            // the video_socket will be cleaned up on destroy
-            return false;
-        }
-
-        // we don't need the server socket anymore
-        if (!atomic_flag_test_and_set(&server->server_socket_closed)) {
-            // close it from here
-            close_socket(server->server_socket);
-            // otherwise, it is closed by run_wait_server()
+        control_socket = net_accept_intr(&server->intr, tunnel->server_socket);
+        if (control_socket == SC_SOCKET_NONE) {
+            goto fail;
         }
     } else {
         uint32_t attempts = 100;
-        uint32_t delay = 100; // ms
-        server->video_socket =
-            connect_to_server(server->local_port, attempts, delay);
-        if (server->video_socket == INVALID_SOCKET) {
-            return false;
+        sc_tick delay = SC_TICK_FROM_MS(100);
+        video_socket = connect_to_server(server, attempts, delay);
+        if (video_socket == SC_SOCKET_NONE) {
+            goto fail;
         }
 
         // we know that the device is listening, we don't need several attempts
-        server->control_socket =
-            net_connect(IPV4_LOCALHOST, server->local_port);
-        if (server->control_socket == INVALID_SOCKET) {
-            return false;
+        control_socket = net_socket();
+        if (control_socket == SC_SOCKET_NONE) {
+            goto fail;
+        }
+        bool ok = net_connect_intr(&server->intr, control_socket,
+                                   IPV4_LOCALHOST, tunnel->local_port);
+        if (!ok) {
+            goto fail;
         }
     }
 
     // we don't need the adb tunnel anymore
-    disable_tunnel(server); // ignore failure
-    server->tunnel_enabled = false;
+    sc_adb_tunnel_close(tunnel, &server->intr, serial);
+
+    // The sockets will be closed on stop if device_read_info() fails
+    bool ok = device_read_info(&server->intr, video_socket, info);
+    if (!ok) {
+        goto fail;
+    }
+
+    assert(video_socket != SC_SOCKET_NONE);
+    assert(control_socket != SC_SOCKET_NONE);
+
+    server->video_socket = video_socket;
+    server->control_socket = control_socket;
+
+    return true;
+
+fail:
+    if (video_socket != SC_SOCKET_NONE) {
+        if (!net_close(video_socket)) {
+            LOGW("Could not close video socket");
+        }
+    }
+
+    if (control_socket != SC_SOCKET_NONE) {
+        if (!net_close(control_socket)) {
+            LOGW("Could not close control socket");
+        }
+    }
+
+    // Always leave this function with tunnel disabled
+    sc_adb_tunnel_close(tunnel, &server->intr, serial);
+
+    return false;
+}
+
+static void
+sc_server_on_terminated(void *userdata) {
+    struct sc_server *server = userdata;
+
+    // If the server process dies before connecting to the server socket,
+    // then the client will be stuck forever on accept(). To avoid the problem,
+    // wake up the accept() call (or any other) when the server dies, like on
+    // stop() (it is safe to call interrupt() twice).
+    sc_intr_interrupt(&server->intr);
+
+    server->cbs->on_disconnected(server, server->cbs_userdata);
+
+    LOGD("Server terminated");
+}
+
+static int
+run_server(void *data) {
+    struct sc_server *server = data;
+
+    const struct sc_server_params *params = &server->params;
+
+    bool ok = push_server(&server->intr, params->serial);
+    if (!ok) {
+        goto error_connection_failed;
+    }
+
+    ok = sc_adb_tunnel_open(&server->tunnel, &server->intr, params->serial,
+                            params->port_range, params->force_adb_forward);
+    if (!ok) {
+        goto error_connection_failed;
+    }
+
+    // server will connect to our server socket
+    sc_pid pid = execute_server(server, params);
+    if (pid == SC_PROCESS_NONE) {
+        sc_adb_tunnel_close(&server->tunnel, &server->intr, params->serial);
+        goto error_connection_failed;
+    }
+
+    static const struct sc_process_listener listener = {
+        .on_terminated = sc_server_on_terminated,
+    };
+    struct sc_process_observer observer;
+    ok = sc_process_observer_init(&observer, pid, &listener, server);
+    if (!ok) {
+        sc_process_terminate(pid);
+        sc_process_wait(pid, true); // ignore exit code
+        sc_adb_tunnel_close(&server->tunnel, &server->intr, params->serial);
+        goto error_connection_failed;
+    }
+
+    ok = sc_server_connect_to(server, &server->info);
+    // The tunnel is always closed by server_connect_to()
+    if (!ok) {
+        sc_process_terminate(pid);
+        sc_process_wait(pid, true); // ignore exit code
+        sc_process_observer_join(&observer);
+        sc_process_observer_destroy(&observer);
+        goto error_connection_failed;
+    }
+
+    // Now connected
+    server->cbs->on_connected(server, server->cbs_userdata);
+
+    // Wait for server_stop()
+    sc_mutex_lock(&server->mutex);
+    while (!server->stopped) {
+        sc_cond_wait(&server->cond_stopped, &server->mutex);
+    }
+    sc_mutex_unlock(&server->mutex);
+
+    // Give some delay for the server to terminate properly
+#define WATCHDOG_DELAY SC_TICK_FROM_SEC(1)
+    sc_tick deadline = sc_tick_now() + WATCHDOG_DELAY;
+    bool terminated = sc_process_observer_timedwait(&observer, deadline);
+
+    // After this delay, kill the server if it's not dead already.
+    // On some devices, closing the sockets is not sufficient to wake up the
+    // blocking calls while the device is asleep.
+    if (!terminated) {
+        // The process may have terminated since the check, but it is not
+        // reaped (closed) yet, so its PID is still valid, and it is ok to call
+        // sc_process_terminate() even in that case.
+        LOGW("Killing the server...");
+        sc_process_terminate(pid);
+    }
+
+    sc_process_observer_join(&observer);
+    sc_process_observer_destroy(&observer);
+
+    sc_process_close(pid);
+
+    return 0;
+
+error_connection_failed:
+    server->cbs->on_connection_failed(server, server->cbs_userdata);
+    return -1;
+}
+
+bool
+sc_server_start(struct sc_server *server) {
+    bool ok = sc_thread_create(&server->thread, run_server, "server", server);
+    if (!ok) {
+        LOGE("Could not create server thread");
+        return false;
+    }
 
     return true;
 }
 
 void
-server_stop(struct server *server) {
-    if (server->server_socket != INVALID_SOCKET
-            && !atomic_flag_test_and_set(&server->server_socket_closed)) {
-        close_socket(server->server_socket);
-    }
-    if (server->video_socket != INVALID_SOCKET) {
-        close_socket(server->video_socket);
-    }
-    if (server->control_socket != INVALID_SOCKET) {
-        close_socket(server->control_socket);
-    }
+sc_server_stop(struct sc_server *server) {
+    sc_mutex_lock(&server->mutex);
+    server->stopped = true;
+    sc_cond_signal(&server->cond_stopped);
+    sc_intr_interrupt(&server->intr);
+    sc_mutex_unlock(&server->mutex);
 
-    assert(server->process != PROCESS_NONE);
-
-    cmd_terminate(server->process);
-
-    if (server->tunnel_enabled) {
-        // ignore failure
-        disable_tunnel(server);
-    }
-
-    SDL_WaitThread(server->wait_server_thread, NULL);
+    sc_thread_join(&server->thread, NULL);
 }
 
 void
-server_destroy(struct server *server) {
-    SDL_free(server->serial);
+sc_server_destroy(struct sc_server *server) {
+    sc_server_params_destroy(&server->params);
+    sc_intr_destroy(&server->intr);
+    sc_cond_destroy(&server->cond_stopped);
+    sc_mutex_destroy(&server->mutex);
 }

app/src/server.h

@@ -1,50 +1,29 @@
 #ifndef SERVER_H
 #define SERVER_H
 
+#include "common.h"
+
 #include <stdatomic.h>
 #include <stdbool.h>
 #include <stdint.h>
-#include <SDL2/SDL_thread.h>
 
-#include "config.h"
-#include "command.h"
-#include "common.h"
-#include "scrcpy.h"
+#include "adb.h"
+#include "adb_tunnel.h"
+#include "coords.h"
+#include "options.h"
+#include "util/intr.h"
 #include "util/log.h"
 #include "util/net.h"
+#include "util/thread.h"
 
-struct server {
-    char *serial;
-    process_t process;
-    SDL_Thread *wait_server_thread;
-    atomic_flag server_socket_closed;
-    socket_t server_socket; // only used if !tunnel_forward
-    socket_t video_socket;
-    socket_t control_socket;
-    struct sc_port_range port_range;
-    uint16_t local_port; // selected from port_range
-    bool tunnel_enabled;
-    bool tunnel_forward; // use "adb forward" instead of "adb reverse"
+#define SC_DEVICE_NAME_FIELD_LENGTH 64
+struct sc_server_info {
+    char device_name[SC_DEVICE_NAME_FIELD_LENGTH];
+    struct sc_size frame_size;
 };
 
-#define SERVER_INITIALIZER { \
-    .serial = NULL, \
-    .process = PROCESS_NONE, \
-    .wait_server_thread = NULL, \
-    .server_socket_closed = ATOMIC_FLAG_INIT, \
-    .server_socket = INVALID_SOCKET, \
-    .video_socket = INVALID_SOCKET, \
-    .control_socket = INVALID_SOCKET, \
-    .port_range = { \
-        .first = 0, \
-        .last = 0, \
-    }, \
-    .local_port = 0, \
-    .tunnel_enabled = false, \
-    .tunnel_forward = false, \
-}
-
-struct server_params {
+struct sc_server_params {
+    const char *serial;
     enum sc_log_level log_level;
     const char *crop;
     const char *codec_options;
@@ -55,31 +34,69 @@ struct server_params {
     uint16_t max_fps;
     int8_t lock_video_orientation;
     bool control;
-    uint16_t display_id;
+    uint32_t display_id;
     bool show_touches;
     bool stay_awake;
     bool force_adb_forward;
+    bool power_off_on_close;
 };
 
-// init default values
-void
-server_init(struct server *server);
+struct sc_server {
+    // The internal allocated strings are copies owned by the server
+    struct sc_server_params params;
 
-// push, enable tunnel et start the server
-bool
-server_start(struct server *server, const char *serial,
-             const struct server_params *params);
+    sc_thread thread;
+    struct sc_server_info info; // initialized once connected
 
-// block until the communication with the server is established
+    sc_mutex mutex;
+    sc_cond cond_stopped;
+    bool stopped;
+
+    struct sc_intr intr;
+    struct sc_adb_tunnel tunnel;
+
+    sc_socket video_socket;
+    sc_socket control_socket;
+
+    const struct sc_server_callbacks *cbs;
+    void *cbs_userdata;
+};
+
+struct sc_server_callbacks {
+    /**
+     * Called when the server failed to connect
+     *
+     * If it is called, then on_connected() and on_disconnected() will never be
+     * called.
+     */
+    void (*on_connection_failed)(struct sc_server *server, void *userdata);
+
+    /**
+     * Called on server connection
+     */
+    void (*on_connected)(struct sc_server *server, void *userdata);
+
+    /**
+     * Called on server disconnection (after it has been connected)
+     */
+    void (*on_disconnected)(struct sc_server *server, void *userdata);
+};
+
+// init the server with the given params
 bool
-server_connect_to(struct server *server);
+sc_server_init(struct sc_server *server, const struct sc_server_params *params,
+               const struct sc_server_callbacks *cbs, void *cbs_userdata);
+
+// start the server asynchronously
+bool
+sc_server_start(struct sc_server *server);
 
 // disconnect and kill the server process
 void
-server_stop(struct server *server);
+sc_server_stop(struct sc_server *server);
 
 // close and release sockets
 void
-server_destroy(struct server *server);
+sc_server_destroy(struct sc_server *server);
 
 #endif

app/src/stream.c

@@ -3,13 +3,8 @@
 #include <assert.h>
 #include <libavformat/avformat.h>
 #include <libavutil/time.h>
-#include <SDL2/SDL_events.h>
-#include <SDL2/SDL_mutex.h>
-#include <SDL2/SDL_thread.h>
 #include <unistd.h>
 
-#include "config.h"
-#include "compat.h"
 #include "decoder.h"
 #include "events.h"
 #include "recorder.h"
@@ -62,33 +57,12 @@ stream_recv_packet(struct stream *stream, AVPacket *packet) {
     return true;
 }
 
-static void
-notify_stopped(void) {
-    SDL_Event stop_event;
-    stop_event.type = EVENT_STREAM_STOPPED;
-    SDL_PushEvent(&stop_event);
-}
-
 static bool
-process_config_packet(struct stream *stream, AVPacket *packet) {
-    if (stream->recorder && !recorder_push(stream->recorder, packet)) {
-        LOGE("Could not send config packet to recorder");
-        return false;
-    }
-    return true;
-}
-
-static bool
-process_frame(struct stream *stream, AVPacket *packet) {
-    if (stream->decoder && !decoder_push(stream->decoder, packet)) {
-        return false;
-    }
-
-    if (stream->recorder) {
-        packet->dts = packet->pts;
-
-        if (!recorder_push(stream->recorder, packet)) {
-            LOGE("Could not send packet to recorder");
+push_packet_to_sinks(struct stream *stream, const AVPacket *packet) {
+    for (unsigned i = 0; i < stream->sink_count; ++i) {
+        struct sc_packet_sink *sink = stream->sinks[i];
+        if (!sink->ops->push(sink, packet)) {
+            LOGE("Could not send config packet to sink %d", i);
             return false;
         }
     }
@@ -115,9 +89,11 @@ stream_parse(struct stream *stream, AVPacket *packet) {
         packet->flags |= AV_PKT_FLAG_KEY;
     }
 
-    bool ok = process_frame(stream, packet);
+    packet->dts = packet->pts;
+
+    bool ok = push_packet_to_sinks(stream, packet);
     if (!ok) {
-        LOGE("Could not process frame");
+        LOGE("Could not process packet");
         return false;
     }
 
@@ -128,39 +104,44 @@ static bool
 stream_push_packet(struct stream *stream, AVPacket *packet) {
     bool is_config = packet->pts == AV_NOPTS_VALUE;
 
-    // A config packet must not be decoded immetiately (it contains no
+    // A config packet must not be decoded immediately (it contains no
     // frame); instead, it must be concatenated with the future data packet.
-    if (stream->has_pending || is_config) {
+    if (stream->pending || is_config) {
         size_t offset;
-        if (stream->has_pending) {
-            offset = stream->pending.size;
-            if (av_grow_packet(&stream->pending, packet->size)) {
+        if (stream->pending) {
+            offset = stream->pending->size;
+            if (av_grow_packet(stream->pending, packet->size)) {
                 LOGE("Could not grow packet");
                 return false;
             }
         } else {
             offset = 0;
-            if (av_new_packet(&stream->pending, packet->size)) {
-                LOGE("Could not create packet");
+            stream->pending = av_packet_alloc();
+            if (!stream->pending) {
+                LOGE("Could not allocate packet");
+                return false;
+            }
+            if (av_new_packet(stream->pending, packet->size)) {
+                LOGE("Could not create packet");
+                av_packet_free(&stream->pending);
                 return false;
             }
-            stream->has_pending = true;
         }
 
-        memcpy(stream->pending.data + offset, packet->data, packet->size);
+        memcpy(stream->pending->data + offset, packet->data, packet->size);
 
         if (!is_config) {
             // prepare the concat packet to send to the decoder
-            stream->pending.pts = packet->pts;
-            stream->pending.dts = packet->dts;
-            stream->pending.flags = packet->flags;
-            packet = &stream->pending;
+            stream->pending->pts = packet->pts;
+            stream->pending->dts = packet->dts;
+            stream->pending->flags = packet->flags;
+            packet = stream->pending;
         }
     }
 
     if (is_config) {
         // config packet
-        bool ok = process_config_packet(stream, packet);
+        bool ok = push_packet_to_sinks(stream, packet);
         if (!ok) {
             return false;
         }
@@ -168,10 +149,9 @@ stream_push_packet(struct stream *stream, AVPacket *packet) {
         // data packet
         bool ok = stream_parse(stream, packet);
 
-        if (stream->has_pending) {
+        if (stream->pending) {
             // the pending packet must be discarded (consumed or error)
-            stream->has_pending = false;
-            av_packet_unref(&stream->pending);
+            av_packet_free(&stream->pending);
         }
 
         if (!ok) {
@@ -181,6 +161,33 @@ stream_push_packet(struct stream *stream, AVPacket *packet) {
     return true;
 }
 
+static void
+stream_close_first_sinks(struct stream *stream, unsigned count) {
+    while (count) {
+        struct sc_packet_sink *sink = stream->sinks[--count];
+        sink->ops->close(sink);
+    }
+}
+
+static inline void
+stream_close_sinks(struct stream *stream) {
+    stream_close_first_sinks(stream, stream->sink_count);
+}
+
+static bool
+stream_open_sinks(struct stream *stream, const AVCodec *codec) {
+    for (unsigned i = 0; i < stream->sink_count; ++i) {
+        struct sc_packet_sink *sink = stream->sinks[i];
+        if (!sink->ops->open(sink, codec)) {
+            LOGE("Could not open packet sink %d", i);
+            stream_close_first_sinks(stream, i);
+            return false;
+        }
+    }
+
+    return true;
+}
+
 static int
 run_stream(void *data) {
     struct stream *stream = data;
@@ -197,43 +204,36 @@ run_stream(void *data) {
         goto end;
     }
 
-    if (stream->decoder && !decoder_open(stream->decoder, codec)) {
-        LOGE("Could not open decoder");
+    if (!stream_open_sinks(stream, codec)) {
+        LOGE("Could not open stream sinks");
         goto finally_free_codec_ctx;
     }
 
-    if (stream->recorder) {
-        if (!recorder_open(stream->recorder, codec)) {
-            LOGE("Could not open recorder");
-            goto finally_close_decoder;
-        }
-
-        if (!recorder_start(stream->recorder)) {
-            LOGE("Could not start recorder");
-            goto finally_close_recorder;
-        }
-    }
-
     stream->parser = av_parser_init(AV_CODEC_ID_H264);
     if (!stream->parser) {
         LOGE("Could not initialize parser");
-        goto finally_stop_and_join_recorder;
+        goto finally_close_sinks;
     }
 
     // We must only pass complete frames to av_parser_parse2()!
     // It's more complicated, but this allows to reduce the latency by 1 frame!
     stream->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
 
+    AVPacket *packet = av_packet_alloc();
+    if (!packet) {
+        LOGE("Could not allocate packet");
+        goto finally_close_parser;
+    }
+
     for (;;) {
-        AVPacket packet;
-        bool ok = stream_recv_packet(stream, &packet);
+        bool ok = stream_recv_packet(stream, packet);
         if (!ok) {
             // end of stream
             break;
         }
 
-        ok = stream_push_packet(stream, &packet);
-        av_packet_unref(&packet);
+        ok = stream_push_packet(stream, packet);
+        av_packet_unref(packet);
         if (!ok) {
             // cannot process packet (error already logged)
             break;
@@ -242,61 +242,57 @@ run_stream(void *data) {
 
     LOGD("End of frames");
 
-    if (stream->has_pending) {
-        av_packet_unref(&stream->pending);
+    if (stream->pending) {
+        av_packet_free(&stream->pending);
     }
 
+    av_packet_free(&packet);
+finally_close_parser:
     av_parser_close(stream->parser);
-finally_stop_and_join_recorder:
-    if (stream->recorder) {
-        recorder_stop(stream->recorder);
-        LOGI("Finishing recording...");
-        recorder_join(stream->recorder);
-    }
-finally_close_recorder:
-    if (stream->recorder) {
-        recorder_close(stream->recorder);
-    }
-finally_close_decoder:
-    if (stream->decoder) {
-        decoder_close(stream->decoder);
-    }
+finally_close_sinks:
+    stream_close_sinks(stream);
 finally_free_codec_ctx:
     avcodec_free_context(&stream->codec_ctx);
 end:
-    notify_stopped();
+    stream->cbs->on_eos(stream, stream->cbs_userdata);
+
     return 0;
 }
 
 void
-stream_init(struct stream *stream, socket_t socket,
-            struct decoder *decoder, struct recorder *recorder) {
+stream_init(struct stream *stream, sc_socket socket,
+            const struct stream_callbacks *cbs, void *cbs_userdata) {
     stream->socket = socket;
-    stream->decoder = decoder,
-    stream->recorder = recorder;
-    stream->has_pending = false;
+    stream->pending = NULL;
+    stream->sink_count = 0;
+
+    assert(cbs && cbs->on_eos);
+
+    stream->cbs = cbs;
+    stream->cbs_userdata = cbs_userdata;
+}
+
+void
+stream_add_sink(struct stream *stream, struct sc_packet_sink *sink) {
+    assert(stream->sink_count < STREAM_MAX_SINKS);
+    assert(sink);
+    assert(sink->ops);
+    stream->sinks[stream->sink_count++] = sink;
 }
 
 bool
 stream_start(struct stream *stream) {
     LOGD("Starting stream thread");
 
-    stream->thread = SDL_CreateThread(run_stream, "stream", stream);
-    if (!stream->thread) {
+    bool ok = sc_thread_create(&stream->thread, run_stream, "stream", stream);
+    if (!ok) {
         LOGC("Could not start stream thread");
         return false;
     }
     return true;
 }
 
-void
-stream_stop(struct stream *stream) {
-    if (stream->decoder) {
-        decoder_interrupt(stream->decoder);
-    }
-}
-
 void
 stream_join(struct stream *stream) {
-    SDL_WaitThread(stream->thread, NULL);
+    sc_thread_join(&stream->thread, NULL);
 }

app/src/stream.h

@@ -1,40 +1,49 @@
 #ifndef STREAM_H
 #define STREAM_H
 
+#include "common.h"
+
 #include <stdbool.h>
 #include <stdint.h>
 #include <libavformat/avformat.h>
-#include <SDL2/SDL_atomic.h>
-#include <SDL2/SDL_thread.h>
 
-#include "config.h"
+#include "trait/packet_sink.h"
 #include "util/net.h"
+#include "util/thread.h"
 
-struct video_buffer;
+#define STREAM_MAX_SINKS 2
 
 struct stream {
-    socket_t socket;
-    SDL_Thread *thread;
-    struct decoder *decoder;
-    struct recorder *recorder;
+    sc_socket socket;
+    sc_thread thread;
+
+    struct sc_packet_sink *sinks[STREAM_MAX_SINKS];
+    unsigned sink_count;
+
     AVCodecContext *codec_ctx;
     AVCodecParserContext *parser;
     // successive packets may need to be concatenated, until a non-config
     // packet is available
-    bool has_pending;
-    AVPacket pending;
+    AVPacket *pending;
+
+    const struct stream_callbacks *cbs;
+    void *cbs_userdata;
+};
+
+struct stream_callbacks {
+    void (*on_eos)(struct stream *stream, void *userdata);
 };
 
 void
-stream_init(struct stream *stream, socket_t socket,
-            struct decoder *decoder, struct recorder *recorder);
+stream_init(struct stream *stream, sc_socket socket,
+            const struct stream_callbacks *cbs, void *cbs_userdata);
+
+void
+stream_add_sink(struct stream *stream, struct sc_packet_sink *sink);
 
 bool
 stream_start(struct stream *stream);
 
-void
-stream_stop(struct stream *stream);
-
 void
 stream_join(struct stream *stream);
 

app/src/sys/unix/command.c

@@ -1,183 +0,0 @@
-// for portability (kill, readlink, strdup, strtok_r)
-#define _POSIX_C_SOURCE 200809L
-#define _BSD_SOURCE
-
-// modern glibc will complain without this
-#define _DEFAULT_SOURCE
-
-#ifdef __APPLE__
-# define _DARWIN_C_SOURCE // for strdup(), strtok_r(), memset_pattern4()
-#endif
-
-#include "command.h"
-
-#include "config.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include "util/log.h"
-
-bool
-cmd_search(const char *file) {
-    char *path = getenv("PATH");
-    if (!path)
-        return false;
-    path = strdup(path);
-    if (!path)
-        return false;
-
-    bool ret = false;
-    size_t file_len = strlen(file);
-    char *saveptr;
-    for (char *dir = strtok_r(path, ":", &saveptr); dir;
-            dir = strtok_r(NULL, ":", &saveptr)) {
-        size_t dir_len = strlen(dir);
-        char *fullpath = malloc(dir_len + file_len + 2);
-        if (!fullpath)
-            continue;
-        memcpy(fullpath, dir, dir_len);
-        fullpath[dir_len] = '/';
-        memcpy(fullpath + dir_len + 1, file, file_len + 1);
-
-        struct stat sb;
-        bool fullpath_executable = stat(fullpath, &sb) == 0 &&
-            sb.st_mode & S_IXUSR;
-        free(fullpath);
-        if (fullpath_executable) {
-            ret = true;
-            break;
-        }
-    }
-
-    free(path);
-    return ret;
-}
-
-enum process_result
-cmd_execute(const char *const argv[], pid_t *pid) {
-    int fd[2];
-
-    if (pipe(fd) == -1) {
-        perror("pipe");
-        return PROCESS_ERROR_GENERIC;
-    }
-
-    enum process_result ret = PROCESS_SUCCESS;
-
-    *pid = fork();
-    if (*pid == -1) {
-        perror("fork");
-        ret = PROCESS_ERROR_GENERIC;
-        goto end;
-    }
-
-    if (*pid > 0) {
-        // parent close write side
-        close(fd[1]);
-        fd[1] = -1;
-        // wait for EOF or receive errno from child
-        if (read(fd[0], &ret, sizeof(ret)) == -1) {
-            perror("read");
-            ret = PROCESS_ERROR_GENERIC;
-            goto end;
-        }
-    } else if (*pid == 0) {
-        // child close read side
-        close(fd[0]);
-        if (fcntl(fd[1], F_SETFD, FD_CLOEXEC) == 0) {
-            execvp(argv[0], (char *const *)argv);
-            if (errno == ENOENT) {
-                ret = PROCESS_ERROR_MISSING_BINARY;
-            } else {
-                ret = PROCESS_ERROR_GENERIC;
-            }
-            perror("exec");
-        } else {
-            perror("fcntl");
-            ret = PROCESS_ERROR_GENERIC;
-        }
-        // send ret to the parent
-        if (write(fd[1], &ret, sizeof(ret)) == -1) {
-            perror("write");
-        }
-        // close write side before exiting
-        close(fd[1]);
-        _exit(1);
-    }
-
-end:
-    if (fd[0] != -1) {
-        close(fd[0]);
-    }
-    if (fd[1] != -1) {
-        close(fd[1]);
-    }
-    return ret;
-}
-
-bool
-cmd_terminate(pid_t pid) {
-    if (pid <= 0) {
-        LOGC("Requested to kill %d, this is an error. Please report the bug.\n",
-             (int) pid);
-        abort();
-    }
-    return kill(pid, SIGTERM) != -1;
-}
-
-bool
-cmd_simple_wait(pid_t pid, int *exit_code) {
-    int status;
-    int code;
-    if (waitpid(pid, &status, 0) == -1 || !WIFEXITED(status)) {
-        // could not wait, or exited unexpectedly, probably by a signal
-        code = -1;
-    } else {
-        code = WEXITSTATUS(status);
-    }
-    if (exit_code) {
-        *exit_code = code;
-    }
-    return !code;
-}
-
-char *
-get_executable_path(void) {
-// <https://stackoverflow.com/a/1024937/1987178>
-#ifdef __linux__
-    char buf[PATH_MAX + 1]; // +1 for the null byte
-    ssize_t len = readlink("/proc/self/exe", buf, PATH_MAX);
-    if (len == -1) {
-        perror("readlink");
-        return NULL;
-    }
-    buf[len] = '\0';
-    return SDL_strdup(buf);
-#else
-    // in practice, we only need this feature for portable builds, only used on
-    // Windows, so we don't care implementing it for every platform
-    // (it's useful to have a working version on Linux for debugging though)
-    return NULL;
-#endif
-}
-
-bool
-is_regular_file(const char *path) {
-    struct stat path_stat;
-
-    if (stat(path, &path_stat)) {
-        perror("stat");
-        return false;
-    }
-    return S_ISREG(path_stat.st_mode);
-}

app/src/sys/unix/file.c

@@ -0,0 +1,75 @@
+#include "util/file.h"
+
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+bool
+sc_file_executable_exists(const char *file) {
+    char *path = getenv("PATH");
+    if (!path)
+        return false;
+    path = strdup(path);
+    if (!path)
+        return false;
+
+    bool ret = false;
+    size_t file_len = strlen(file);
+    char *saveptr;
+    for (char *dir = strtok_r(path, ":", &saveptr); dir;
+            dir = strtok_r(NULL, ":", &saveptr)) {
+        size_t dir_len = strlen(dir);
+        char *fullpath = malloc(dir_len + file_len + 2);
+        if (!fullpath)
+            continue;
+        memcpy(fullpath, dir, dir_len);
+        fullpath[dir_len] = '/';
+        memcpy(fullpath + dir_len + 1, file, file_len + 1);
+
+        struct stat sb;
+        bool fullpath_executable = stat(fullpath, &sb) == 0 &&
+            sb.st_mode & S_IXUSR;
+        free(fullpath);
+        if (fullpath_executable) {
+            ret = true;
+            break;
+        }
+    }
+
+    free(path);
+    return ret;
+}
+
+char *
+sc_file_get_executable_path(void) {
+// <https://stackoverflow.com/a/1024937/1987178>
+#ifdef __linux__
+    char buf[PATH_MAX + 1]; // +1 for the null byte
+    ssize_t len = readlink("/proc/self/exe", buf, PATH_MAX);
+    if (len == -1) {
+        perror("readlink");
+        return NULL;
+    }
+    buf[len] = '\0';
+    return strdup(buf);
+#else
+    // in practice, we only need this feature for portable builds, only used on
+    // Windows, so we don't care implementing it for every platform
+    // (it's useful to have a working version on Linux for debugging though)
+    return NULL;
+#endif
+}
+
+bool
+sc_file_is_regular(const char *path) {
+    struct stat path_stat;
+
+    if (stat(path, &path_stat)) {
+        perror("stat");
+        return false;
+    }
+    return S_ISREG(path_stat.st_mode);
+}
+

app/src/sys/unix/process.c

@@ -0,0 +1,200 @@
+#include "util/process.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "util/log.h"
+
+enum sc_process_result
+sc_process_execute_p(const char *const argv[], sc_pid *pid,
+                     int *pin, int *pout, int *perr) {
+    int in[2];
+    int out[2];
+    int err[2];
+    int internal[2]; // communication between parent and children
+
+    if (pipe(internal) == -1) {
+        perror("pipe");
+        return SC_PROCESS_ERROR_GENERIC;
+    }
+    if (pin) {
+        if (pipe(in) == -1) {
+            perror("pipe");
+            close(internal[0]);
+            close(internal[1]);
+            return SC_PROCESS_ERROR_GENERIC;
+        }
+    }
+    if (pout) {
+        if (pipe(out) == -1) {
+            perror("pipe");
+            // clean up
+            if (pin) {
+                close(in[0]);
+                close(in[1]);
+            }
+            close(internal[0]);
+            close(internal[1]);
+            return SC_PROCESS_ERROR_GENERIC;
+        }
+    }
+    if (perr) {
+        if (pipe(err) == -1) {
+            perror("pipe");
+            // clean up
+            if (pout) {
+                close(out[0]);
+                close(out[1]);
+            }
+            if (pin) {
+                close(in[0]);
+                close(in[1]);
+            }
+            close(internal[0]);
+            close(internal[1]);
+            return SC_PROCESS_ERROR_GENERIC;
+        }
+    }
+
+    *pid = fork();
+    if (*pid == -1) {
+        perror("fork");
+        // clean up
+        if (perr) {
+            close(err[0]);
+            close(err[1]);
+        }
+        if (pout) {
+            close(out[0]);
+            close(out[1]);
+        }
+        if (pin) {
+            close(in[0]);
+            close(in[1]);
+        }
+        close(internal[0]);
+        close(internal[1]);
+        return SC_PROCESS_ERROR_GENERIC;
+    }
+
+    if (*pid == 0) {
+        if (pin) {
+            if (in[0] != STDIN_FILENO) {
+                dup2(in[0], STDIN_FILENO);
+                close(in[0]);
+            }
+            close(in[1]);
+        }
+        if (pout) {
+            if (out[1] != STDOUT_FILENO) {
+                dup2(out[1], STDOUT_FILENO);
+                close(out[1]);
+            }
+            close(out[0]);
+        }
+        if (perr) {
+            if (err[1] != STDERR_FILENO) {
+                dup2(err[1], STDERR_FILENO);
+                close(err[1]);
+            }
+            close(err[0]);
+        }
+        close(internal[0]);
+        enum sc_process_result err;
+        if (fcntl(internal[1], F_SETFD, FD_CLOEXEC) == 0) {
+            execvp(argv[0], (char *const *) argv);
+            perror("exec");
+            err = errno == ENOENT ? SC_PROCESS_ERROR_MISSING_BINARY
+                                  : SC_PROCESS_ERROR_GENERIC;
+        } else {
+            perror("fcntl");
+            err = SC_PROCESS_ERROR_GENERIC;
+        }
+        // send err to the parent
+        if (write(internal[1], &err, sizeof(err)) == -1) {
+            perror("write");
+        }
+        close(internal[1]);
+        _exit(1);
+    }
+
+    // parent
+    assert(*pid > 0);
+
+    close(internal[1]);
+
+    enum sc_process_result res = SC_PROCESS_SUCCESS;
+    // wait for EOF or receive err from child
+    if (read(internal[0], &res, sizeof(res)) == -1) {
+        perror("read");
+        res = SC_PROCESS_ERROR_GENERIC;
+    }
+
+    close(internal[0]);
+
+    if (pin) {
+        close(in[0]);
+        *pin = in[1];
+    }
+    if (pout) {
+        *pout = out[0];
+        close(out[1]);
+    }
+    if (perr) {
+        *perr = err[0];
+        close(err[1]);
+    }
+
+    return res;
+}
+
+bool
+sc_process_terminate(pid_t pid) {
+    if (pid <= 0) {
+        LOGC("Requested to kill %d, this is an error. Please report the bug.\n",
+             (int) pid);
+        abort();
+    }
+    return kill(pid, SIGKILL) != -1;
+}
+
+sc_exit_code
+sc_process_wait(pid_t pid, bool close) {
+    int code;
+    int options = WEXITED;
+    if (!close) {
+        options |= WNOWAIT;
+    }
+
+    siginfo_t info;
+    int r = waitid(P_PID, pid, &info, options);
+    if (r == -1 || info.si_code != CLD_EXITED) {
+        // could not wait, or exited unexpectedly, probably by a signal
+        code = SC_EXIT_CODE_NONE;
+    } else {
+        code = info.si_status;
+    }
+    return code;
+}
+
+void
+sc_process_close(pid_t pid) {
+    sc_process_wait(pid, true); // ignore exit code
+}
+
+ssize_t
+sc_pipe_read(int pipe, char *data, size_t len) {
+    return read(pipe, data, len);
+}
+
+void
+sc_pipe_close(int pipe) {
+    if (close(pipe)) {
+        perror("close pipe");
+    }
+}

app/src/sys/win/command.c

@@ -1,113 +0,0 @@
-#include "command.h"
-
-#include <sys/stat.h>
-
-#include "config.h"
-#include "util/log.h"
-#include "util/str_util.h"
-
-static int
-build_cmd(char *cmd, size_t len, const char *const argv[]) {
-    // Windows command-line parsing is WTF:
-    // <http://daviddeley.com/autohotkey/parameters/parameters.htm#WINPASS>
-    // only make it work for this very specific program
-    // (don't handle escaping nor quotes)
-    size_t ret = xstrjoin(cmd, argv, ' ', len);
-    if (ret >= len) {
-        LOGE("Command too long (%" PRIsizet " chars)", len - 1);
-        return -1;
-    }
-    return 0;
-}
-
-enum process_result
-cmd_execute(const char *const argv[], HANDLE *handle) {
-    STARTUPINFOW si;
-    PROCESS_INFORMATION pi;
-    memset(&si, 0, sizeof(si));
-    si.cb = sizeof(si);
-
-    char cmd[256];
-    if (build_cmd(cmd, sizeof(cmd), argv)) {
-        *handle = NULL;
-        return PROCESS_ERROR_GENERIC;
-    }
-
-    wchar_t *wide = utf8_to_wide_char(cmd);
-    if (!wide) {
-        LOGC("Could not allocate wide char string");
-        return PROCESS_ERROR_GENERIC;
-    }
-
-#ifdef WINDOWS_NOCONSOLE
-    int flags = CREATE_NO_WINDOW;
-#else
-    int flags = 0;
-#endif
-    if (!CreateProcessW(NULL, wide, NULL, NULL, FALSE, flags, NULL, NULL, &si,
-                        &pi)) {
-        SDL_free(wide);
-        *handle = NULL;
-        if (GetLastError() == ERROR_FILE_NOT_FOUND) {
-            return PROCESS_ERROR_MISSING_BINARY;
-        }
-        return PROCESS_ERROR_GENERIC;
-    }
-
-    SDL_free(wide);
-    *handle = pi.hProcess;
-    return PROCESS_SUCCESS;
-}
-
-bool
-cmd_terminate(HANDLE handle) {
-    return TerminateProcess(handle, 1) && CloseHandle(handle);
-}
-
-bool
-cmd_simple_wait(HANDLE handle, DWORD *exit_code) {
-    DWORD code;
-    if (WaitForSingleObject(handle, INFINITE) != WAIT_OBJECT_0
-            || !GetExitCodeProcess(handle, &code)) {
-        // could not wait or retrieve the exit code
-        code = -1; // max value, it's unsigned
-    }
-    if (exit_code) {
-        *exit_code = code;
-    }
-    return !code;
-}
-
-char *
-get_executable_path(void) {
-    HMODULE hModule = GetModuleHandleW(NULL);
-    if (!hModule) {
-        return NULL;
-    }
-    WCHAR buf[MAX_PATH + 1]; // +1 for the null byte
-    int len = GetModuleFileNameW(hModule, buf, MAX_PATH);
-    if (!len) {
-        return NULL;
-    }
-    buf[len] = '\0';
-    return utf8_from_wide_char(buf);
-}
-
-bool
-is_regular_file(const char *path) {
-    wchar_t *wide_path = utf8_to_wide_char(path);
-    if (!wide_path) {
-        LOGC("Could not allocate wide char string");
-        return false;
-    }
-
-    struct _stat path_stat;
-    int r = _wstat(wide_path, &path_stat);
-    SDL_free(wide_path);
-
-    if (r) {
-        perror("stat");
-        return false;
-    }
-    return S_ISREG(path_stat.st_mode);
-}

app/src/sys/win/file.c

@@ -0,0 +1,43 @@
+#include "util/file.h"
+
+#include <windows.h>
+
+#include <sys/stat.h>
+
+#include "util/log.h"
+#include "util/str.h"
+
+char *
+sc_file_get_executable_path(void) {
+    HMODULE hModule = GetModuleHandleW(NULL);
+    if (!hModule) {
+        return NULL;
+    }
+    WCHAR buf[MAX_PATH + 1]; // +1 for the null byte
+    int len = GetModuleFileNameW(hModule, buf, MAX_PATH);
+    if (!len) {
+        return NULL;
+    }
+    buf[len] = '\0';
+    return sc_str_from_wchars(buf);
+}
+
+bool
+sc_file_is_regular(const char *path) {
+    wchar_t *wide_path = sc_str_to_wchars(path);
+    if (!wide_path) {
+        LOGC("Could not allocate wide char string");
+        return false;
+    }
+
+    struct _stat path_stat;
+    int r = _wstat(wide_path, &path_stat);
+    free(wide_path);
+
+    if (r) {
+        perror("stat");
+        return false;
+    }
+    return S_ISREG(path_stat.st_mode);
+}
+

app/src/sys/win/process.c

@@ -0,0 +1,245 @@
+// <https://devblogs.microsoft.com/oldnewthing/20111216-00/?p=8873>
+#define _WIN32_WINNT 0x0600 // For extended process API
+
+#include "util/process.h"
+
+#include <processthreadsapi.h>
+
+#include <assert.h>
+
+#include "util/log.h"
+#include "util/str.h"
+
+#define CMD_MAX_LEN 8192
+
+static bool
+build_cmd(char *cmd, size_t len, const char *const argv[]) {
+    // Windows command-line parsing is WTF:
+    // <http://daviddeley.com/autohotkey/parameters/parameters.htm#WINPASS>
+    // only make it work for this very specific program
+    // (don't handle escaping nor quotes)
+    size_t ret = sc_str_join(cmd, argv, ' ', len);
+    if (ret >= len) {
+        LOGE("Command too long (%" SC_PRIsizet " chars)", len - 1);
+        return false;
+    }
+    return true;
+}
+
+enum sc_process_result
+sc_process_execute_p(const char *const argv[], HANDLE *handle,
+                     HANDLE *pin, HANDLE *pout, HANDLE *perr) {
+    enum sc_process_result ret = SC_PROCESS_ERROR_GENERIC;
+
+    // Add 1 per non-NULL pointer
+    unsigned handle_count = !!pin + !!pout + !!perr;
+
+    SECURITY_ATTRIBUTES sa;
+    sa.nLength = sizeof(SECURITY_ATTRIBUTES);
+    sa.lpSecurityDescriptor = NULL;
+    sa.bInheritHandle = TRUE;
+
+    HANDLE stdin_read_handle;
+    HANDLE stdout_write_handle;
+    HANDLE stderr_write_handle;
+    if (pin) {
+        if (!CreatePipe(&stdin_read_handle, pin, &sa, 0)) {
+            perror("pipe");
+            return SC_PROCESS_ERROR_GENERIC;
+        }
+        if (!SetHandleInformation(*pin, HANDLE_FLAG_INHERIT, 0)) {
+            LOGE("SetHandleInformation stdin failed");
+            goto error_close_stdin;
+        }
+    }
+    if (pout) {
+        if (!CreatePipe(pout, &stdout_write_handle, &sa, 0)) {
+            perror("pipe");
+            goto error_close_stdin;
+        }
+        if (!SetHandleInformation(*pout, HANDLE_FLAG_INHERIT, 0)) {
+            LOGE("SetHandleInformation stdout failed");
+            goto error_close_stdout;
+        }
+    }
+    if (perr) {
+        if (!CreatePipe(perr, &stderr_write_handle, &sa, 0)) {
+            perror("pipe");
+            goto error_close_stdout;
+        }
+        if (!SetHandleInformation(*perr, HANDLE_FLAG_INHERIT, 0)) {
+            LOGE("SetHandleInformation stderr failed");
+            goto error_close_stderr;
+        }
+    }
+
+    STARTUPINFOEXW si;
+    PROCESS_INFORMATION pi;
+    memset(&si, 0, sizeof(si));
+    si.StartupInfo.cb = sizeof(si);
+    HANDLE handles[3];
+
+    LPPROC_THREAD_ATTRIBUTE_LIST lpAttributeList = NULL;
+    if (handle_count) {
+        si.StartupInfo.dwFlags = STARTF_USESTDHANDLES;
+        if (pin) {
+            si.StartupInfo.hStdInput = stdin_read_handle;
+        }
+        if (pout) {
+            si.StartupInfo.hStdOutput = stdout_write_handle;
+        }
+        if (perr) {
+            si.StartupInfo.hStdError = stderr_write_handle;
+        }
+
+        SIZE_T size;
+        // Call it once to know the required buffer size
+        BOOL ok =
+            InitializeProcThreadAttributeList(NULL, 1, 0, &size)
+                || GetLastError() == ERROR_INSUFFICIENT_BUFFER;
+        if (!ok) {
+            goto error_close_stderr;
+        }
+
+        lpAttributeList = malloc(size);
+        if (!lpAttributeList) {
+            goto error_close_stderr;
+        }
+
+        ok = InitializeProcThreadAttributeList(lpAttributeList, 1, 0, &size);
+        if (!ok) {
+            free(lpAttributeList);
+            goto error_close_stderr;
+        }
+
+        // Explicitly pass the HANDLEs that must be inherited
+        unsigned i = 0;
+        if (pin) {
+            handles[i++] = stdin_read_handle;
+        }
+        if (pout) {
+            handles[i++] = stdout_write_handle;
+        }
+        if (perr) {
+            handles[i++] = stderr_write_handle;
+        }
+        ok = UpdateProcThreadAttribute(lpAttributeList, 0,
+                                       PROC_THREAD_ATTRIBUTE_HANDLE_LIST,
+                                       handles, handle_count * sizeof(HANDLE),
+                                       NULL, NULL);
+        if (!ok) {
+            goto error_free_attribute_list;
+        }
+
+        si.lpAttributeList = lpAttributeList;
+    }
+
+    char *cmd = malloc(CMD_MAX_LEN);
+    if (!cmd || !build_cmd(cmd, CMD_MAX_LEN, argv)) {
+        goto error_free_attribute_list;
+    }
+
+    wchar_t *wide = sc_str_to_wchars(cmd);
+    free(cmd);
+    if (!wide) {
+        LOGC("Could not allocate wide char string");
+        goto error_free_attribute_list;
+    }
+
+    BOOL bInheritHandles = handle_count > 0;
+    DWORD dwCreationFlags = handle_count > 0 ? EXTENDED_STARTUPINFO_PRESENT : 0;
+    BOOL ok = CreateProcessW(NULL, wide, NULL, NULL, bInheritHandles,
+                             dwCreationFlags, NULL, NULL, &si.StartupInfo, &pi);
+    free(wide);
+    if (!ok) {
+        if (GetLastError() == ERROR_FILE_NOT_FOUND) {
+            ret = SC_PROCESS_ERROR_MISSING_BINARY;
+        }
+        goto error_free_attribute_list;
+    }
+
+    if (lpAttributeList) {
+        DeleteProcThreadAttributeList(lpAttributeList);
+        free(lpAttributeList);
+    }
+
+    // These handles are used by the child process, close them for this process
+    if (pin) {
+        CloseHandle(stdin_read_handle);
+    }
+    if (pout) {
+        CloseHandle(stdout_write_handle);
+    }
+    if (perr) {
+        CloseHandle(stderr_write_handle);
+    }
+
+    *handle = pi.hProcess;
+
+    return SC_PROCESS_SUCCESS;
+
+error_free_attribute_list:
+    if (lpAttributeList) {
+        DeleteProcThreadAttributeList(lpAttributeList);
+        free(lpAttributeList);
+    }
+error_close_stderr:
+    if (perr) {
+        CloseHandle(*perr);
+        CloseHandle(stderr_write_handle);
+    }
+error_close_stdout:
+    if (pout) {
+        CloseHandle(*pout);
+        CloseHandle(stdout_write_handle);
+    }
+error_close_stdin:
+    if (pin) {
+        CloseHandle(*pin);
+        CloseHandle(stdin_read_handle);
+    }
+
+    return ret;
+}
+
+bool
+sc_process_terminate(HANDLE handle) {
+    return TerminateProcess(handle, 1);
+}
+
+sc_exit_code
+sc_process_wait(HANDLE handle, bool close) {
+    DWORD code;
+    if (WaitForSingleObject(handle, INFINITE) != WAIT_OBJECT_0
+            || !GetExitCodeProcess(handle, &code)) {
+        // could not wait or retrieve the exit code
+        code = SC_EXIT_CODE_NONE;
+    }
+    if (close) {
+        CloseHandle(handle);
+    }
+    return code;
+}
+
+void
+sc_process_close(HANDLE handle) {
+    bool closed = CloseHandle(handle);
+    assert(closed);
+    (void) closed;
+}
+
+ssize_t
+sc_pipe_read(HANDLE pipe, char *data, size_t len) {
+    DWORD r;
+    if (!ReadFile(pipe, data, len, &r, NULL)) {
+        return -1;
+    }
+    return r;
+}
+
+void
+sc_pipe_close(HANDLE pipe) {
+    if (!CloseHandle(pipe)) {
+        LOGW("Cannot close pipe");
+    }
+}

app/src/tiny_xpm.c

@@ -1,120 +0,0 @@
-#include "tiny_xpm.h"
-
-#include <assert.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "config.h"
-#include "util/log.h"
-
-struct index {
-    char c;
-    uint32_t color;
-};
-
-static bool
-find_color(struct index *index, int len, char c, uint32_t *color) {
-    // there are typically very few color, so it's ok to iterate over the array
-    for (int i = 0; i < len; ++i) {
-        if (index[i].c == c) {
-            *color = index[i].color;
-            return true;
-        }
-    }
-    *color = 0;
-    return false;
-}
-
-// We encounter some problems with SDL2_image on MSYS2 (Windows),
-// so here is our own XPM parsing not to depend on SDL_image.
-//
-// We do not hardcode the binary image to keep some flexibility to replace the
-// icon easily (just by replacing icon.xpm).
-//
-// Parameter is not "const char *" because XPM formats are generally stored in a
-// (non-const) "char *"
-SDL_Surface *
-read_xpm(char *xpm[]) {
-#ifndef NDEBUG
-    // patch the XPM to change the icon color in debug mode
-    xpm[2] = ".	c #CC00CC";
-#endif
-
-    char *endptr;
-    // *** No error handling, assume the XPM source is valid ***
-    // (it's in our source repo)
-    // Assertions are only checked in debug
-    int width = strtol(xpm[0], &endptr, 10);
-    int height = strtol(endptr + 1, &endptr, 10);
-    int colors = strtol(endptr + 1, &endptr, 10);
-    int chars = strtol(endptr + 1, &endptr, 10);
-
-    // sanity checks
-    assert(0 <= width && width < 256);
-    assert(0 <= height && height < 256);
-    assert(0 <= colors && colors < 256);
-    assert(chars == 1); // this implementation does not support more
-
-    (void) chars;
-
-    // init index
-    struct index index[colors];
-    for (int i = 0; i < colors; ++i) {
-        const char *line = xpm[1+i];
-        index[i].c = line[0];
-        assert(line[1] == '\t');
-        assert(line[2] == 'c');
-        assert(line[3] == ' ');
-        if (line[4] == '#') {
-            index[i].color = 0xff000000 | strtol(&line[5], &endptr, 0x10);
-            assert(*endptr == '\0');
-        } else {
-            assert(!strcmp("None", &line[4]));
-            index[i].color = 0;
-        }
-    }
-
-    // parse image
-    uint32_t *pixels = SDL_malloc(4 * width * height);
-    if (!pixels) {
-        LOGE("Could not allocate icon memory");
-        return NULL;
-    }
-    for (int y = 0; y < height; ++y) {
-        const char *line = xpm[1 + colors + y];
-        for (int x = 0; x < width; ++x) {
-            char c = line[x];
-            uint32_t color;
-            bool color_found = find_color(index, colors, c, &color);
-            assert(color_found);
-            (void) color_found;
-            pixels[y * width + x] = color;
-        }
-    }
-
-#if SDL_BYTEORDER == SDL_BIG_ENDIAN
-    uint32_t amask = 0x000000ff;
-    uint32_t rmask = 0x0000ff00;
-    uint32_t gmask = 0x00ff0000;
-    uint32_t bmask = 0xff000000;
-#else // little endian, like x86
-    uint32_t amask = 0xff000000;
-    uint32_t rmask = 0x00ff0000;
-    uint32_t gmask = 0x0000ff00;
-    uint32_t bmask = 0x000000ff;
-#endif
-
-    SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(pixels,
-                                                    width, height,
-                                                    32, 4 * width,
-                                                    rmask, gmask, bmask, amask);
-    if (!surface) {
-        LOGE("Could not create icon surface");
-        return NULL;
-    }
-    // make the surface own the raw pixels
-    surface->flags &= ~SDL_PREALLOC;
-    return surface;
-}

app/src/tiny_xpm.h

@@ -1,11 +0,0 @@
-#ifndef TINYXPM_H
-#define TINYXPM_H
-
-#include <SDL2/SDL.h>
-
-#include "config.h"
-
-SDL_Surface *
-read_xpm(char *xpm[]);
-
-#endif

app/src/trait/frame_sink.h

@@ -0,0 +1,26 @@
+#ifndef SC_FRAME_SINK_H
+#define SC_FRAME_SINK_H
+
+#include "common.h"
+
+#include <assert.h>
+#include <stdbool.h>
+
+typedef struct AVFrame AVFrame;
+
+/**
+ * Frame sink trait.
+ *
+ * Component able to receive AVFrames should implement this trait.
+ */
+struct sc_frame_sink {
+    const struct sc_frame_sink_ops *ops;
+};
+
+struct sc_frame_sink_ops {
+    bool (*open)(struct sc_frame_sink *sink);
+    void (*close)(struct sc_frame_sink *sink);
+    bool (*push)(struct sc_frame_sink *sink, const AVFrame *frame);
+};
+
+#endif

app/src/trait/key_processor.h

@@ -0,0 +1,29 @@
+#ifndef SC_KEY_PROCESSOR_H
+#define SC_KEY_PROCESSOR_H
+
+#include "common.h"
+
+#include <assert.h>
+#include <stdbool.h>
+
+#include <SDL2/SDL_events.h>
+
+/**
+ * Key processor trait.
+ *
+ * Component able to process and inject keys should implement this trait.
+ */
+struct sc_key_processor {
+    const struct sc_key_processor_ops *ops;
+};
+
+struct sc_key_processor_ops {
+    void
+    (*process_key)(struct sc_key_processor *kp, const SDL_KeyboardEvent *event);
+
+    void
+    (*process_text)(struct sc_key_processor *kp,
+                    const SDL_TextInputEvent *event);
+};
+
+#endif

app/src/trait/mouse_processor.h

@@ -0,0 +1,39 @@
+#ifndef SC_MOUSE_PROCESSOR_H
+#define SC_MOUSE_PROCESSOR_H
+
+#include "common.h"
+
+#include <assert.h>
+#include <stdbool.h>
+
+#include <SDL2/SDL_events.h>
+
+/**
+ * Mouse processor trait.
+ *
+ * Component able to process and inject mouse events should implement this
+ * trait.
+ */
+struct sc_mouse_processor {
+    const struct sc_mouse_processor_ops *ops;
+};
+
+struct sc_mouse_processor_ops {
+    void
+    (*process_mouse_motion)(struct sc_mouse_processor *mp,
+                            const SDL_MouseMotionEvent *event);
+
+    void
+    (*process_touch)(struct sc_mouse_processor *mp,
+                     const SDL_TouchFingerEvent *event);
+
+    void
+    (*process_mouse_button)(struct sc_mouse_processor *mp,
+                            const SDL_MouseButtonEvent *event);
+
+    void
+    (*process_mouse_wheel)(struct sc_mouse_processor *mp,
+                           const SDL_MouseWheelEvent *event);
+};
+
+#endif

app/src/trait/packet_sink.h

@@ -0,0 +1,27 @@
+#ifndef SC_PACKET_SINK_H
+#define SC_PACKET_SINK_H
+
+#include "common.h"
+
+#include <assert.h>
+#include <stdbool.h>
+
+typedef struct AVCodec AVCodec;
+typedef struct AVPacket AVPacket;
+
+/**
+ * Packet sink trait.
+ *
+ * Component able to receive AVPackets should implement this trait.
+ */
+struct sc_packet_sink {
+    const struct sc_packet_sink_ops *ops;
+};
+
+struct sc_packet_sink_ops {
+    bool (*open)(struct sc_packet_sink *sink, const AVCodec *codec);
+    void (*close)(struct sc_packet_sink *sink);
+    bool (*push)(struct sc_packet_sink *sink, const AVPacket *packet);
+};
+
+#endif

app/src/util/buffer_util.h

@@ -1,11 +1,11 @@
 #ifndef BUFFER_UTIL_H
 #define BUFFER_UTIL_H
 
+#include "common.h"
+
 #include <stdbool.h>
 #include <stdint.h>
 
-#include "config.h"
-
 static inline void
 buffer_write16be(uint8_t *buf, uint16_t value) {
     buf[0] = value >> 8;
@@ -33,7 +33,7 @@ buffer_read16be(const uint8_t *buf) {
 
 static inline uint32_t
 buffer_read32be(const uint8_t *buf) {
-    return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+    return ((uint32_t) buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
 }
 
 static inline uint64_t

app/src/util/cbuf.h

@@ -2,11 +2,11 @@
 #ifndef CBUF_H
 #define CBUF_H
 
+#include "common.h"
+
 #include <stdbool.h>
 #include <unistd.h>
 
-#include "config.h"
-
 // To define a circular buffer type of 20 ints:
 //     struct cbuf_int CBUF(int, 20);
 //

app/src/util/file.c

@@ -0,0 +1,48 @@
+#include "file.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "util/log.h"
+
+char *
+sc_file_get_local_path(const char *name) {
+    char *executable_path = sc_file_get_executable_path();
+    if (!executable_path) {
+        return NULL;
+    }
+
+    // dirname() does not work correctly everywhere, so get the parent
+    // directory manually.
+    // See <https://github.com/Genymobile/scrcpy/issues/2619>
+    char *p = strrchr(executable_path, SC_PATH_SEPARATOR);
+    if (!p) {
+        LOGE("Unexpected executable path: \"%s\" (it should contain a '%c')",
+             executable_path, SC_PATH_SEPARATOR);
+        free(executable_path);
+        return NULL;
+    }
+
+    *p = '\0'; // modify executable_path in place
+    char *dir = executable_path;
+    size_t dirlen = strlen(dir);
+    size_t namelen = strlen(name);
+
+    size_t len = dirlen + namelen + 2; // +2: '/' and '\0'
+    char *file_path = malloc(len);
+    if (!file_path) {
+        LOGE("Could not alloc path");
+        free(executable_path);
+        return NULL;
+    }
+
+    memcpy(file_path, dir, dirlen);
+    file_path[dirlen] = SC_PATH_SEPARATOR;
+    // namelen + 1 to copy the final '\0'
+    memcpy(&file_path[dirlen + 1], name, namelen + 1);
+
+    free(executable_path);
+
+    return file_path;
+}
+

app/src/util/file.h

@@ -0,0 +1,49 @@
+#ifndef SC_FILE_H
+#define SC_FILE_H
+
+#include "common.h"
+
+#include <stdbool.h>
+
+#ifdef _WIN32
+# define SC_PATH_SEPARATOR '\\'
+#else
+# define SC_PATH_SEPARATOR '/'
+#endif
+
+#ifndef _WIN32
+/**
+ * Indicate if an executable exists using $PATH
+ *
+ * In practice, it is only used to know if a package manager is available on
+ * the system. It is only implemented on Linux.
+ */
+bool
+sc_file_executable_exists(const char *file);
+#endif
+
+/**
+ * Return the absolute path of the executable (the scrcpy binary)
+ *
+ * The result must be freed by the caller using free(). It may return NULL on
+ * error.
+ */
+char *
+sc_file_get_executable_path(void);
+
+/**
+ * Return the absolute path of a file in the same directory as the executable
+ *
+ * The result must be freed by the caller using free(). It may return NULL on
+ * error.
+ */
+char *
+sc_file_get_local_path(const char *name);
+
+/**
+ * Indicate if the file exists and is not a directory
+ */
+bool
+sc_file_is_regular(const char *path);
+
+#endif

app/src/util/intr.c

@@ -0,0 +1,83 @@
+#include "intr.h"
+
+#include "util/log.h"
+
+#include <assert.h>
+
+bool
+sc_intr_init(struct sc_intr *intr) {
+    bool ok = sc_mutex_init(&intr->mutex);
+    if (!ok) {
+        LOGE("Could not init intr mutex");
+        return false;
+    }
+
+    intr->socket = SC_SOCKET_NONE;
+    intr->process = SC_PROCESS_NONE;
+
+    atomic_store_explicit(&intr->interrupted, false, memory_order_relaxed);
+
+    return true;
+}
+
+bool
+sc_intr_set_socket(struct sc_intr *intr, sc_socket socket) {
+    assert(intr->process == SC_PROCESS_NONE);
+
+    sc_mutex_lock(&intr->mutex);
+    bool interrupted =
+        atomic_load_explicit(&intr->interrupted, memory_order_relaxed);
+    if (!interrupted) {
+        intr->socket = socket;
+    }
+    sc_mutex_unlock(&intr->mutex);
+
+    return !interrupted;
+}
+
+bool
+sc_intr_set_process(struct sc_intr *intr, sc_pid pid) {
+    assert(intr->socket == SC_SOCKET_NONE);
+
+    sc_mutex_lock(&intr->mutex);
+    bool interrupted =
+        atomic_load_explicit(&intr->interrupted, memory_order_relaxed);
+    if (!interrupted) {
+        intr->process = pid;
+    }
+    sc_mutex_unlock(&intr->mutex);
+
+    return !interrupted;
+}
+
+void
+sc_intr_interrupt(struct sc_intr *intr) {
+    sc_mutex_lock(&intr->mutex);
+
+    atomic_store_explicit(&intr->interrupted, true, memory_order_relaxed);
+
+    // No more than one component to interrupt
+    assert(intr->socket == SC_SOCKET_NONE ||
+           intr->process == SC_PROCESS_NONE);
+
+    if (intr->socket != SC_SOCKET_NONE) {
+        LOGD("Interrupting socket");
+        net_interrupt(intr->socket);
+        intr->socket = SC_SOCKET_NONE;
+    }
+    if (intr->process != SC_PROCESS_NONE) {
+        LOGD("Interrupting process");
+        sc_process_terminate(intr->process);
+        intr->process = SC_PROCESS_NONE;
+    }
+
+    sc_mutex_unlock(&intr->mutex);
+}
+
+void
+sc_intr_destroy(struct sc_intr *intr) {
+    assert(intr->socket == SC_SOCKET_NONE);
+    assert(intr->process == SC_PROCESS_NONE);
+
+    sc_mutex_destroy(&intr->mutex);
+}

app/src/util/intr.h

@@ -0,0 +1,78 @@
+#ifndef SC_INTR_H
+#define SC_INTR_H
+
+#include "common.h"
+
+#include <stdatomic.h>
+#include <stdbool.h>
+
+#include "net.h"
+#include "process.h"
+#include "thread.h"
+
+/**
+ * Interruptor to wake up a blocking call from another thread
+ *
+ * It allows to register a socket or a process before a blocking call, and
+ * interrupt/close from another thread to wake up the blocking call.
+ */
+struct sc_intr {
+    sc_mutex mutex;
+
+    sc_socket socket;
+    sc_pid process;
+
+    // Written protected by the mutex to avoid race conditions against
+    // sc_intr_set_socket() and sc_intr_set_process(), but can be read
+    // (atomically) without mutex
+    atomic_bool interrupted;
+};
+
+/**
+ * Initialize an interruptor
+ */
+bool
+sc_intr_init(struct sc_intr *intr);
+
+/**
+ * Set a socket as the interruptible component
+ *
+ * Call with SC_SOCKET_NONE to unset.
+ */
+bool
+sc_intr_set_socket(struct sc_intr *intr, sc_socket socket);
+
+/**
+ * Set a process as the interruptible component
+ *
+ * Call with SC_PROCESS_NONE to unset.
+ */
+bool
+sc_intr_set_process(struct sc_intr *intr, sc_pid socket);
+
+/**
+ * Interrupt the current interruptible component
+ *
+ * Must be called from a different thread.
+ */
+void
+sc_intr_interrupt(struct sc_intr *intr);
+
+/**
+ * Read the interrupted state
+ *
+ * It is exposed as a static inline function because it just loads from an
+ * atomic.
+ */
+static inline bool
+sc_intr_is_interrupted(struct sc_intr *intr) {
+    return atomic_load_explicit(&intr->interrupted, memory_order_relaxed);
+}
+
+/**
+ * Destroy the interruptor
+ */
+void
+sc_intr_destroy(struct sc_intr *intr);
+
+#endif

app/src/util/lock.h

@@ -1,74 +0,0 @@
-#ifndef LOCK_H
-#define LOCK_H
-
-#include <stdint.h>
-#include <SDL2/SDL_mutex.h>
-
-#include "config.h"
-#include "log.h"
-
-static inline void
-mutex_lock(SDL_mutex *mutex) {
-    int r = SDL_LockMutex(mutex);
-#ifndef NDEBUG
-    if (r) {
-        LOGC("Could not lock mutex: %s", SDL_GetError());
-        abort();
-    }
-#else
-    (void) r;
-#endif
-}
-
-static inline void
-mutex_unlock(SDL_mutex *mutex) {
-    int r = SDL_UnlockMutex(mutex);
-#ifndef NDEBUG
-    if (r) {
-        LOGC("Could not unlock mutex: %s", SDL_GetError());
-        abort();
-    }
-#else
-    (void) r;
-#endif
-}
-
-static inline void
-cond_wait(SDL_cond *cond, SDL_mutex *mutex) {
-    int r = SDL_CondWait(cond, mutex);
-#ifndef NDEBUG
-    if (r) {
-        LOGC("Could not wait on condition: %s", SDL_GetError());
-        abort();
-    }
-#else
-    (void) r;
-#endif
-}
-
-static inline int
-cond_wait_timeout(SDL_cond *cond, SDL_mutex *mutex, uint32_t ms) {
-    int r = SDL_CondWaitTimeout(cond, mutex, ms);
-#ifndef NDEBUG
-    if (r < 0) {
-        LOGC("Could not wait on condition with timeout: %s", SDL_GetError());
-        abort();
-    }
-#endif
-    return r;
-}
-
-static inline void
-cond_signal(SDL_cond *cond) {
-    int r = SDL_CondSignal(cond);
-#ifndef NDEBUG
-    if (r) {
-        LOGC("Could not signal a condition: %s", SDL_GetError());
-        abort();
-    }
-#else
-    (void) r;
-#endif
-}
-
-#endif

app/src/util/log.c

@@ -0,0 +1,53 @@
+#include "log.h"
+
+#include <assert.h>
+
+static SDL_LogPriority
+log_level_sc_to_sdl(enum sc_log_level level) {
+    switch (level) {
+        case SC_LOG_LEVEL_VERBOSE:
+            return SDL_LOG_PRIORITY_VERBOSE;
+        case SC_LOG_LEVEL_DEBUG:
+            return SDL_LOG_PRIORITY_DEBUG;
+        case SC_LOG_LEVEL_INFO:
+            return SDL_LOG_PRIORITY_INFO;
+        case SC_LOG_LEVEL_WARN:
+            return SDL_LOG_PRIORITY_WARN;
+        case SC_LOG_LEVEL_ERROR:
+            return SDL_LOG_PRIORITY_ERROR;
+        default:
+            assert(!"unexpected log level");
+            return SDL_LOG_PRIORITY_INFO;
+    }
+}
+
+static enum sc_log_level
+log_level_sdl_to_sc(SDL_LogPriority priority) {
+    switch (priority) {
+        case SDL_LOG_PRIORITY_VERBOSE:
+            return SC_LOG_LEVEL_VERBOSE;
+        case SDL_LOG_PRIORITY_DEBUG:
+            return SC_LOG_LEVEL_DEBUG;
+        case SDL_LOG_PRIORITY_INFO:
+            return SC_LOG_LEVEL_INFO;
+        case SDL_LOG_PRIORITY_WARN:
+            return SC_LOG_LEVEL_WARN;
+        case SDL_LOG_PRIORITY_ERROR:
+            return SC_LOG_LEVEL_ERROR;
+        default:
+            assert(!"unexpected log level");
+            return SC_LOG_LEVEL_INFO;
+    }
+}
+
+void
+sc_set_log_level(enum sc_log_level level) {
+    SDL_LogPriority sdl_log = log_level_sc_to_sdl(level);
+    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, sdl_log);
+}
+
+enum sc_log_level
+sc_get_log_level(void) {
+    SDL_LogPriority sdl_log = SDL_LogGetPriority(SDL_LOG_CATEGORY_APPLICATION);
+    return log_level_sdl_to_sc(sdl_log);
+}

app/src/util/log.h

@@ -1,8 +1,12 @@
-#ifndef LOG_H
-#define LOG_H
+#ifndef SC_LOG_H
+#define SC_LOG_H
+
+#include "common.h"
 
 #include <SDL2/SDL_log.h>
 
+#include "options.h"
+
 #define LOGV(...) SDL_LogVerbose(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
 #define LOGD(...) SDL_LogDebug(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
 #define LOGI(...) SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
@@ -10,4 +14,10 @@
 #define LOGE(...) SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
 #define LOGC(...) SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, __VA_ARGS__)
 
+void
+sc_set_log_level(enum sc_log_level level);
+
+enum sc_log_level
+sc_get_log_level(void);
+
 #endif