Compensate slope on start

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.

BUILD.md

@@ -2,11 +2,43 @@
 
 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
+```
+
+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
 
@@ -59,12 +91,11 @@ Install the required packages from your package manager.
 sudo apt install ffmpeg libsdl2-2.0-0 adb
 
 # client build dependencies
-sudo apt install gcc git pkg-config meson ninja-build \
+sudo apt install gcc git pkg-config meson ninja-build libsdl2-dev \
-                 libavcodec-dev libavformat-dev libavutil-dev \
+                 libavcodec-dev libavdevice-dev libavformat-dev libavutil-dev
-                 libsdl2-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
@@ -106,13 +137,13 @@ 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 +204,12 @@ 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
+brew install adoptopenjdk/openjdk/adoptopenjdk11
-export JAVA_HOME="$(/usr/libexec/java_home --version 1.8)"
+export JAVA_HOME="$(/usr/libexec/java_home --version 1.11)"
 export PATH="$JAVA_HOME/bin:$PATH"
 ```
 
@@ -189,8 +220,27 @@ 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_),
+**As a non-root user**, clone the project:
-and set `ANDROID_SDK_ROOT` to its directory. For example:
+
+```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 +253,11 @@ 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 +266,27 @@ 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-v1.18`][direct-scrcpy-server]  
+   _(SHA-256: 641c5c6beda9399dfae72d116f5ff43b5ed1059d871c9ebc3f47610fd33c51a3)_
+
+[direct-scrcpy-server]: https://github.com/Genymobile/scrcpy/releases/download/v1.18/scrcpy-server-v1.18
+
+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 +301,16 @@ 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`
-
+ - `/usr/local/share/man/man1/scrcpy.1`
-Just remove them to "uninstall" the application.
 
 You can then [run](README.md#run) _scrcpy_.
 
-
+### Uninstall
-## Prebuilt server
-
- - [`scrcpy-server-v1.17`][direct-scrcpy-server]  
-   _(SHA-256: 11b5ad2d1bc9b9730fb7254a78efd71a8ff46b1938ff468e47a21b653a1b6725_
-
-[direct-scrcpy-server]: https://github.com/Genymobile/scrcpy/releases/download/v1.17/scrcpy-server-v1.17
-
-Download the prebuilt server somewhere, and specify its path during the Meson
-configuration:
 
 ```bash
-meson x --buildtype release --strip -Db_lto=true \
+sudo ninja -Cx uninstall  # without sudo on Windows
-    -Dprebuilt_server=/path/to/scrcpy-server
-ninja -Cx
-sudo ninja -Cx install
 ```
-
-The server only works with a matching client version (this server works with the
-`master` branch).

DEVELOP.md

@@ -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 +1,217 @@
+_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
+
+
+
+### 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
 
 
@@ -111,16 +116,6 @@ 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
@@ -237,3 +232,11 @@ 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`) - v1.17](FAQ.it.md)
+ - [한국어 (Korean, `ko`) - v1.11](FAQ.ko.md)

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]  
+ - [README](README.md#windows)
-   _(SHA-256: 3f30dc5db1a2f95c2b40a0f5de91ec1642d9f53799250a8c529bc882bc0918f0)_
-
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.16/scrcpy-win64-v1.16.zip
 
 Ini juga tersedia di [Chocolatey]:
 

README.it.md

@@ -0,0 +1,742 @@
+_Apri il [README](README.md) originale e sempre aggiornato._
+
+# scrcpy (v1.17)
+
+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 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 _
+```
+
+### 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
+
+
+### 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
+```
+
+#### Renderizzare i fotogrammi scaduti
+
+Per minimizzare la latenza _scrcpy_ renderizza sempre l'ultimo fotogramma decodificato disponibile in maniera predefinita e tralascia quelli precedenti.
+
+Per forzare la renderizzazione di tutti i fotogrammi (a costo di una possibile latenza superiore), utilizzare:
+
+```bash
+scrcpy --render-expired-frames
+```
+
+#### 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/` 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/Download/
+```
+
+
+### 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 click¹_
+ | 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>
+ | 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>
+ | Chiudi il pannello delle notifiche                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copia negli appunti³                          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Taglia negli appunti³                           | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Sincronizza gli appunti e incolla³           | <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._  
+_³Solo in Android >= 7._
+
+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 +1,725 @@
+_Only the original [README](README.md) is guaranteed to be up-to-date._
+
+# scrcpy (v1.17)
+
+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`adb`へのアクセスが必要です。もしまだ持っていない場合:
+
+```bash
+# Homebrew >= 2.6.0
+brew install --cask android-platform-tools
+
+# Homebrew < 2.6.0
+brew cask install android-platform-tools
+```
+
+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 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 _
+```
+
+### 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
+
+
+### 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
+```
+
+
+#### 期限切れフレームをレンダリングする
+
+初期状態では、待ち時間を最小限にするために、_scrcpy_ は最後にデコードされたフレームをレンダリングし、前のフレームを削除します。
+
+全フレームのレンダリングを強制するには(待ち時間が長くなる可能性があります):
+
+```bash
+scrcpy --render-expired-frames
+```
+
+#### 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/`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/foo/bar/
+```
+
+
+### 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>
+ | `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>
+ | 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._  
+_³Android 7以上のみ._
+
+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]
+ - [README](README.md#windows)
-
-[direct-win]: https://github.com/Genymobile/scrcpy/blob/master/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:
 

README.md

@@ -1,4 +1,4 @@
-# scrcpy (v1.17)
+# scrcpy (v1.18)
 
 [Read in another language](#translations)
 
@@ -38,6 +38,18 @@ 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 +79,8 @@ 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
+You could also [build the app manually][BUILD] ([simplified
-hard).
+process][BUILD_simple]).
-
 
 
 ### Windows
@@ -77,10 +88,10 @@ hard).
 For Windows, for simplicity, a prebuilt archive with all the dependencies
 (including `adb`) is available:
 
- - [`scrcpy-win64-v1.17.zip`][direct-win64]  
+ - [`scrcpy-win64-v1.18.zip`][direct-win64]  
-   _(SHA-256: 8b9e57993c707367ed10ebfe0e1ef563c7a29d9af4a355cd8b6a52a317c73eea)_
+   _(SHA-256: 37212f5087fe6f3e258f1d44fa5c02207496b30e1d7ec442cbcf8358910a5c63)_
 
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.17/scrcpy-win64-v1.17.zip
+[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.18/scrcpy-win64-v1.18.zip
 
 It is also available in [Chocolatey]:
 
@@ -116,13 +127,18 @@ brew install scrcpy
 You need `adb`, accessible from your `PATH`. If you don't have it yet:
 
 ```bash
-# Homebrew >= 2.6.0
+brew install android-platform-tools
-brew install --cask android-platform-tools
-
-# Homebrew < 2.6.0
-brew cask 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].
 
 
@@ -199,10 +215,10 @@ To lock the orientation of the mirroring:
 
 ```bash
 scrcpy --lock-video-orientation     # initial (current) orientation
-scrcpy --lock-video-orientation 0   # natural orientation
+scrcpy --lock-video-orientation=0   # natural orientation
-scrcpy --lock-video-orientation 1   # 90° counterclockwise
+scrcpy --lock-video-orientation=1   # 90° counterclockwise
-scrcpy --lock-video-orientation 2   # 180°
+scrcpy --lock-video-orientation=2   # 180°
-scrcpy --lock-video-orientation 3   # 90° clockwise
+scrcpy --lock-video-orientation=3   # 90° clockwise
 ```
 
 This affects recording orientation.
@@ -287,7 +303,8 @@ To start scrcpy using a v4l2 sink:
 
 ```bash
 scrcpy --v4l2-sink=/dev/videoN
-scrcpy --v4l2-sink=/dev/videoN -N  # --no-display to disable mirroring window
+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*`)
@@ -304,6 +321,24 @@ For example, you could capture the video within [OBS].
 [OBS]: https://obsproject.com/fr
 
 
+#### Buffering
+
+It is possible to add buffering. This increases latency but reduces jitter (see
+#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
@@ -466,7 +501,7 @@ _(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`](#lock-video-orientation) changes the mirroring
    orientation (the orientation of the video sent from the device to the
@@ -499,7 +534,7 @@ scrcpy --display 1
 
 The list of display ids can be retrieved by:
 
-```
+```bash
 adb shell dumpsys display   # search "mDisplayId=" in the output
 ```
 
@@ -693,15 +728,15 @@ 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
+To push a file to `/sdcard/Download/` on the device, drag & drop a (non-APK)
-_scrcpy_ window.
+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/
 ```
 
 
@@ -784,7 +819,9 @@ 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`.
@@ -806,8 +843,6 @@ A colleague challenged me to find a name as unpronounceable as [gnirehtet].
 
 See [BUILD].
 
-[BUILD]: BUILD.md
-
 
 ## Common issues
 
@@ -851,9 +886,12 @@ Read the [developers page].
 This README is available in other languages:
 
 - [Indonesian (Indonesia, `id`) - v1.16](README.id.md)
+- [Italiano (Italiano, `it`) - v1.17](README.it.md)
+- [日本語 (Japanese, `jp`) - v1.17](README.jp.md)
 - [한국어 (Korean, `ko`) - v1.11](README.ko.md)
-- [português brasileiro (Brazilian Portuguese, `pt-BR`) - v1.12.1](README.pt-br.md)
+- [português brasileiro (Brazilian Portuguese, `pt-BR`) - v1.17](README.pt-br.md)
-- [简体中文 (Simplified Chinese, `zh-Hans`) - v1.16](README.zh-Hans.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)
 
 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 (v1.17)
 
-Esta aplicação fornece visualização e controle de dispositivos Android conectados via
+Esta aplicação fornece exibição e controle de dispositivos Android conectados via
-USB (ou [via TCP/IP][article-tcpip]). Não requer nenhum acesso root.
+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 +22,41 @@ 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 adb][enable-adb] no(s) seu(s) dispositivo(s).
-Tenha certeza de ter [ativado a depuração USB][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 precisa ativar [uma opção adicional][control] para
-Em alguns dispositivos, você também precisará ativar [uma opção adicional][control] para controlá-lo usando o teclado e mouse.
+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>
 
 ### 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 +67,19 @@ 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 o app manualmente][BUILD] (não se preocupe, não é tão
+difícil).
 
-Você também pode [compilar a aplicação manualmente][BUILD] (não se preocupe, não é tão difícil).
 
 
 ### 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]  
+ - [README](README.md#windows)
-   _(SHA-256: 57d34b6d16cfd9fe169bc37c4df58ebd256d05c1ea3febc63d9cb0a027ab47c9)_
 
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.12.1/scrcpy-win64-v1.12.1.zip
+Também está disponível em [Chocolatey]:
-
-Também disponível em [Chocolatey]:
 
 [Chocolatey]: https://chocolatey.org/
 
@@ -94,12 +97,12 @@ 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 +110,22 @@ 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
+# Homebrew >= 2.6.0
+brew install --cask android-platform-tools
+
+# Homebrew < 2.6.0
 brew cask install android-platform-tools
 ```
 
-Você também pode [compilar a aplicação manualmente][BUILD].
+Você também pode [compilar o app manualmente][BUILD].
 
 
 ## Executar
 
-Plugue um dispositivo Android e execute:
+Conecte um dispositivo Android e execute:
 
 ```bash
 scrcpy
@@ -134,52 +141,87 @@ 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.
 
 
+#### Travar orientação do vídeo
+
+
+Para travar a orientação do espelhamento:
+
+```bash
+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 _
+```
+
 ### Gravando
 
 É possível gravar a tela enquanto ocorre o espelhamento:
@@ -194,65 +236,84 @@ Para desativar o espelhamento durante a gravação:
 ```bash
 scrcpy --no-display --record file.mp4
 scrcpy -Nr file.mkv
-# interrompe a gravação com Ctrl+C
+# interrompa a gravação com Ctrl+C
-# Ctrl+C não encerrar propriamente no Windows, então desconecte o dispositivo
 ```
 
-"Frames pulados" são gravados, mesmo que não sejam mostrado em tempo real (por motivos de performance).
+"Frames pulados" são gravados, mesmo que não sejam exibidos em tempo real (por
-Frames tem seu _horário_ _carimbado_ no dispositivo, então [Variação de atraso nos pacotes] não impacta na gravação do arquivo.
+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
 
 
 ### 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.
+4. Desconecte seu dispositivo.
-5. Conecte-se ao seu dispositivo: `adb connect DEVICE_IP:5555` _(substitua o `DEVICE_IP`)_.
+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 +322,33 @@ 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 +364,15 @@ 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
@@ -307,41 +384,117 @@ 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.
+Também pode ser útil evitar que o dispositivo seja suspenso:
 
-Para forçar a renderização de todos os frames ( com o custo de aumento de latência), use:
+```bash
+scrcpy --turn-screen-off --stay-awake
+scrcpy -Sw
+```
+
+
+#### Renderizar frames expirados
+
+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 um possível aumento de
+latência), use:
 
 ```bash
 scrcpy --render-expired-frames
@@ -349,11 +502,13 @@ scrcpy --render-expired-frames
 
 #### 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 +518,137 @@ 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,
+Sempre que a área de transferência do Android muda, é automaticamente sincronizada com a
-para ambas direções:
+área de transferência do computador.
 
- - `Ctrl`+`c` copia a área de transferência do dispositivo para a área de trasferência do computador;
+Qualquer atalho com <kbd>Ctrl</kbd> é encaminhado para o dispositivo. Em particular:
- - `Ctrl`+`Shift`+`v` copia a área de transferência do computador para a área de transferência do dispositivo;
+ - <kbd>Ctrl</kbd>+<kbd>c</kbd> tipicamente copia
- - `Ctrl`+`v` _cola_ a área de transferência do computador como uma sequência de eventos de texto (mas
+ - <kbd>Ctrl</kbd>+<kbd>x</kbd> tipicamente recorta
-   quebra caracteres não-ASCII).
+ - <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:
+O comportamento de fato depende da aplicação ativa, no entanto. Por exemplo,
- - _eventos de teclas_, sinalizando que a tecla foi pressionada ou solta;
+_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
+Por padrão, letras são injetadas usando eventos de tecla, assim o teclado comporta-se
-como esperado em jogos (normalmente para tecladas WASD)
+como esperado em jogos (normalmente para teclas WASD).
 
-Mas isto pode [causar problemas][prefertext]. Se você encontrar tal problema,
+Mas isso pode [causar problemas][prefertext]. Se você encontrar tal problema, você
-pode evitá-lo usando:
+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
+Para enviar um arquivo para `/sdcard/` no dispositivo, arraste e solte um arquivo (não-APK) para a
-_scrcpy_.
+janela do _scrcpy_.
 
 Não existe feedback visual, um log é imprimido no console.
 
@@ -428,45 +661,73 @@ 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)
+Na lista a seguir, <kbd>MOD</kbd> é o modificador de atalho. Por padrão, é
- | ------------------------------------------------------------- |:------------------------------- |:-----------------------------
+<kbd>Alt</kbd> (esquerdo) ou <kbd>Super</kbd> (esquerdo).
- | Alternar para modo de tela cheia                              | `Ctrl`+`f`                      | `Cmd`+`f`
+
- | Redimensionar janela para pixel-perfect(Escala 1:1)           | `Ctrl`+`g`                      | `Cmd`+`g`
+Ele pode ser mudado usando `--shortcut-mod`. Possíveis teclas são `lctrl`, `rctrl`,
- | Redimensionar janela para tirar as bordas pretas              | `Ctrl`+`x` \| _Clique-duplo¹_   | `Cmd`+`x`  \| _Clique-duplo¹_
+`lalt`, `ralt`, `lsuper` e `rsuper`. Por exemplo:
- | Clicar em `HOME`                                              | `Ctrl`+`h` \| _Clique-central_  | `Ctrl`+`h` \| _Clique-central_
+
- | Clicar em `BACK`                                              | `Ctrl`+`b` \| _Clique-direito²_ | `Cmd`+`b`  \| _Clique-direito²_
+```bash
- | Clicar em `APP_SWITCH`                                        | `Ctrl`+`s`                      | `Cmd`+`s`
+# usar RCtrl para atalhos
- | Clicar em `MENU`                                              | `Ctrl`+`m`                      | `Ctrl`+`m`
+scrcpy --shortcut-mod=rctrl
- | Clicar em `VOLUME_UP`                                         | `Ctrl`+`↑` _(cima)_             | `Cmd`+`↑` _(cima)_
+
- | Clicar em `VOLUME_DOWN`                                       | `Ctrl`+`↓` _(baixo)_            | `Cmd`+`↓` _(baixo)_
+# usar tanto LCtrl+LAlt quanto LSuper para atalhos
- | Clicar em `POWER`                                             | `Ctrl`+`p`                      | `Cmd`+`p`
+scrcpy --shortcut-mod=lctrl+lalt,lsuper
- | Ligar                                                         | _Clique-direito²_               | _Clique-direito²_
+```
- | Desligar a tela do dispositivo                                | `Ctrl`+`o`                      | `Cmd`+`o`
+
- | Rotacionar tela do dispositivo                                | `Ctrl`+`r`                      | `Cmd`+`r`
+_<kbd>[Super]</kbd> é tipicamente a tecla <kbd>Windows</kbd> ou <kbd>Cmd</kbd>._
- | Expandir painel de notificação                                | `Ctrl`+`n`                      | `Cmd`+`n`
+
- | Esconder painel de notificação                                | `Ctrl`+`Shift`+`n`              | `Cmd`+`Shift`+`n`
+[Super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button)
- | 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`
+ | Ação                                        |   Atalho
- | 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`
+ | 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-perfect) | <kbd>MOD</kbd>+<kbd>g</kbd>
+ | Redimensionar janela para remover bordas pretas | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Clique-duplo¹_
+ | 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>
+ | 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>
+ | Colapsar painel de notificação              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copiar para área de transferência³          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Recortar para área de transferência³        | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Sincronizar áreas de transferência e colar³ | <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 em bordas pretas para removê-las._  
-_²Botão direito liga a tela se ela estiver desligada, clique BACK para o contrário._
+_²Clique-direito liga a tela se ela estiver desligada, pressiona BACK caso contrário._
+_³Apenas em Android >= 7._
+
+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
 
@@ -478,7 +739,7 @@ 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.
 
@@ -495,12 +756,12 @@ Veja [BUILD].
 
 ## 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
 

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.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)
 
-
+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_。
-# 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/
 
 ![screenshot](assets/screenshot-debian-600.jpg)
 
 它专注于：
 
- - **轻量** （原生，仅显示设备屏幕）
+ - **轻量** (原生，仅显示设备屏幕)
- - **性能** （30~60fps）
+ - **性能** (30~60fps)
- - **质量** （分辨率可达1920x1080或更高）
+ - **质量** (分辨率可达 1920×1080 或更高)
- - **低延迟** (35-70ms)
+ - **低延迟** ([35~70ms][lowlatency])
- - **快速启动** （数秒内即能开始显示）
+ - **快速启动** (最快 1 秒内即可显示第一帧)
- - **无侵入性** （不需要在安卓设备上安装任何程序）
+ - **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]  
+ - [README](README.md#windows)
-   _(SHA-256: 3f30dc5db1a2f95c2b40a0f5de91ec1642d9f53799250a8c529bc882bc0918f0)_
 
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.16/scrcpy-win64-v1.16.zip
+也可以使用 [Chocolatey]：
-
-您也可以在[Chocolatey]下载：
 
 [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。
+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。
-这样，1920x1080 的设备会以 1024x576 的分辨率显示。
 
 
-#### 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 0   # 自然方向
-scrcpy --lock-video-orientation 1   # 90° 逆时针旋转
+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。
+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。
-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。
 
-[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。
+1. 将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）。
+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：
-3. 打开安卓设备的网络adb功能`adb tcpip 5555`。
+    ```bash
-4. 将您的设备与电脑断开连接。
+    adb shell ip route | awk '{print $9}'
-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`。
 
-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°
+ - `1`: 逆时针旋转 90°
- - `2`: 旋转180°
+ - `2`: 旋转 180°
- - `3`: 顺时针旋转90°
+ - `3`: 顺时针旋转 90°
 
-这同样可以使用<kbd>MOD</kbd>+<kbd>←</kbd>
+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。
-_(左)_ 和 <kbd>MOD</kbd>+<kbd>→</kbd> _(右)_ 的快捷键实时更改。
 
-需要注意的是， _scrcpy_ 控制三个不同的朝向：
+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所请求的朝向，可能会拒绝该请求）。
+ - <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。
- - `--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>) 只旋转窗口的内容。这只影响显示，不影响录制。
-
- - `--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。
 
 
 ### 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。
+还可以同时阻止设备休眠：
-
-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：
 
 ```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>c</kbd> 通常执行复制
- - <kbd>Ctrl</kbd>+<kbd>x</kbd> 剪切
+ - <kbd>Ctrl</kbd>+<kbd>x</kbd> 通常执行剪切
- - <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>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。
+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。
-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。
 
-在这种情况下剪切复制黏贴（仅在Android >= 7时可用）：
+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>c</kbd> 注入 `COPY` (复制)
- - <kbd>MOD</kbd>+<kbd>x</kbd> 注入 `CUT`（剪切）
+ - <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）
+ - <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。
+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。
-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。
 
-**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>）
+**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。
-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）。
 
+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。
+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)。
-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。
 
-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。
+ - _按键事件_ ，代表一个按键被按下或松开。
- - _文本事件_ ，代表一个文本被输入。
+ - _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。
+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。
-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。
+在以下列表中, <kbd>MOD</kbd> 是快捷键的修饰键。
-默认是（左）<kbd>Alt</kbd>或者（左）<kbd>Super</kbd>。
+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`、
+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：
-`lalt`、`ralt`、`lsuper`和`rsuper`。如下例：
 
 ```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
+ | 操作                              | 快捷键                                       |
- | ------------------------------------------- |:-----------------------------
+ | --------------------------------- | :------------------------------------------- |
- | 全屏                                        | <kbd>MOD</kbd>+<kbd>f</kbd>
+ | 全屏                              | <kbd>MOD</kbd>+<kbd>f</kbd>                  |
- | 向左旋转屏幕                                 | <kbd>MOD</kbd>+<kbd>←</kbd> _(左)_
+ | 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)_
+ | 向右旋转屏幕                      | <kbd>MOD</kbd>+<kbd>→</kbd> _(右箭头)_       |
- | 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_
+ | 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 `主屏幕`                     | <kbd>MOD</kbd>+<kbd>h</kbd> \| _鼠标中键_    |
- | 点按 `返回`                                  | <kbd>MOD</kbd>+<kbd>b</kbd> \| _点击鼠标右键²_
+ | 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 `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 `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> _(上箭头)_       |
- | 点按 `音量-`                                | <kbd>MOD</kbd>+<kbd>↓</kbd> _(down)_
+ | 点按 `音量-`                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(下箭头)_       |
- | 点按 `电源`                                 | <kbd>MOD</kbd>+<kbd>p</kbd>
+ | 点按 `电源`                       | <kbd>MOD</kbd>+<kbd>p</kbd>                  |
- | 打开屏幕                                    | _点击鼠标右键²_
+ | 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>
+ | 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>
+ | 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>
+ | 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>
+ | 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>
+ | 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>
+ | 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>
+ | 同步剪贴板并粘贴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>
+ | 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>
+ | 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_
+ | 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_  
+_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 。_  
+_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
+要使用指定的 _adb_ 二进制文件，可以设置环境变量 `ADB`：
-`ADB`中设置它的路径：
 
     ADB=/path/to/adb scrcpy
 
-如果需要覆盖`scrcpy-server`的路径，您可以在
+要覆盖 `scrcpy-server` 的路径，可以设置 `SCRCPY_SERVER_PATH`。
-`SCRCPY_SERVER_PATH`中设置它。
 
 [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

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]  
+ - [README](README.md#windows)
-   _(SHA-256: dd514bb591e63ef4cd52a53c30f1153a28f59722d64690eb07bd017849edcba2)_
-
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.15/scrcpy-win64-v1.15.zip
 
 [Chocolatey] 上也可以下載:
 

app/meson.build

@@ -2,15 +2,16 @@ src = [
     'src/main.c',
     'src/adb.c',
     'src/cli.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/file_handler.c',
     'src/fps_counter.c',
+    'src/frame_buffer.c',
     'src/input_manager.c',
     'src/opengl.c',
     'src/receiver.c',
@@ -21,10 +22,12 @@ src = [
     'src/stream.c',
     'src/tiny_xpm.c',
     'src/video_buffer.c',
+    'src/util/log.c',
     'src/util/net.c',
     'src/util/process.c',
     'src/util/str_util.c',
     'src/util/thread.c',
+    'src/util/tick.c',
 ]
 
 if host_machine.system() == 'windows'
@@ -165,6 +168,10 @@ if get_option('buildtype') == 'debug'
             'src/cli.c',
             'src/util/str_util.c',
         ]],
+        ['test_clock', [
+            'tests/test_clock.c',
+            'src/clock.c',
+        ]],
         ['test_control_msg_serialize', [
             'tests/test_control_msg_serialize.c',
             'src/control_msg.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).
@@ -83,7 +89,7 @@ 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]
+.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 otation counterclockwise.
 
 Default is "unlocked".
@@ -133,7 +139,7 @@ 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
@@ -189,11 +195,17 @@ It only shows physical touches (not clicks from scrcpy).
 .BI "\-\-v4l2-sink " /dev/videoN
 Output to v4l2loopback device.
 
-It requires to lock the video orientation (see --lock-video-orientation).
+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.
 
 .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.
 
@@ -217,30 +229,30 @@ 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

app/src/adb.c

@@ -81,14 +81,20 @@ show_adb_installation_msg() {
 
 static void
 show_adb_err_msg(enum process_result err, const char *const argv[]) {
-    char buf[512];
+#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));
+            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));
+            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)");
@@ -98,29 +104,38 @@ show_adb_err_msg(enum process_result err, const char *const argv[]) {
             // 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];
     int i;
     process_t process;
-    cmd[0] = get_adb_command();
+
+    const char **argv = malloc((len + 4) * sizeof(*argv));
+    if (!argv) {
+        return PROCESS_NONE;
+    }
+
+    argv[0] = get_adb_command();
     if (serial) {
-        cmd[1] = "-s";
+        argv[1] = "-s";
-        cmd[2] = serial;
+        argv[2] = serial;
         i = 3;
     } else {
         i = 1;
     }
 
-    memcpy(&cmd[i], adb_cmd, len * sizeof(const char *));
+    memcpy(&argv[i], adb_cmd, len * sizeof(const char *));
-    cmd[len + i] = NULL;
+    argv[len + i] = NULL;
-    enum process_result r = process_execute(cmd, &process);
+    enum process_result r = process_execute(argv, &process);
     if (r != PROCESS_SUCCESS) {
-        show_adb_err_msg(r, cmd);
+        show_adb_err_msg(r, argv);
-        return PROCESS_NONE;
+        process = PROCESS_NONE;
     }
+
+    free(argv);
     return process;
 }
 

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/cli.c

@@ -55,6 +55,12 @@ scrcpy_print_usage(const char *arg0) {
         "\n"
         "        Default is 0.\n"
         "\n"
+        "    --display-buffer ms\n"
+        "        Add a buffering delay (in milliseconds) before displaying.\n"
+        "        This increases latency to compensate for jitter.\n"
+        "\n"
+        "        Default is 0 (no buffering).\n"
+        "\n"
         "    --encoder name\n"
         "        Use a specific MediaCodec encoder (must be a H.264 encoder).\n"
         "\n"
@@ -79,7 +85,7 @@ scrcpy_print_usage(const char *arg0) {
         "        This is a workaround for some devices not behaving as\n"
         "        expected when setting the device clipboard programmatically.\n"
         "\n"
-        "    --lock-video-orientation [value]\n"
+        "    --lock-video-orientation[=value]\n"
         "        Lock video orientation to value.\n"
         "        Possible values are \"unlocked\", \"initial\" (locked to the\n"
         "        initial orientation), 0, 1, 2 and 3.\n"
@@ -129,7 +135,7 @@ scrcpy_print_usage(const char *arg0) {
         "    --push-target path\n"
         "        Set the target directory for pushing files to the device by\n"
         "        drag & drop. It is passed as-is to \"adb push\".\n"
-        "        Default is \"/sdcard/\".\n"
+        "        Default is \"/sdcard/Download/\".\n"
         "\n"
         "    -r, --record file.mp4\n"
         "        Record screen to file.\n"
@@ -182,9 +188,18 @@ scrcpy_print_usage(const char *arg0) {
         "        It requires to lock the video orientation (see\n"
         "        --lock-video-orientation).\n"
         "\n"
+        "    --v4l2-buffer ms\n"
+        "        Add a buffering delay (in milliseconds) before pushing\n"
+        "        frames. This increases latency to compensate for jitter.\n"
+        "\n"
+        "        This option is similar to --display-buffer, but specific to\n"
+        "        V4L2 sink.\n"
+        "\n"
+        "        Default is 0 (no buffering).\n"
+        "\n"
 #endif
         "    -V, --verbosity value\n"
-        "        Set the log level (debug, info, warn or error).\n"
+        "        Set the log level (verbose, debug, info, warn or error).\n"
 #ifndef NDEBUG
         "        Default is debug.\n"
 #else
@@ -217,7 +232,7 @@ scrcpy_print_usage(const char *arg0) {
         "        Default is 0 (automatic).\n"
         "\n"
         "    --window-height value\n"
-        "        Set the initial window width.\n"
+        "        Set the initial window height.\n"
         "        Default is 0 (automatic).\n"
         "\n"
         "Shortcuts:\n"
@@ -392,6 +407,19 @@ parse_max_fps(const char *s, uint16_t *max_fps) {
     return true;
 }
 
+static bool
+parse_buffering_time(const char *s, sc_tick *tick) {
+    long value;
+    bool ok = parse_integer_arg(s, &value, false, 0, 0xFFFFFFFF,
+                                "buffering time");
+    if (!ok) {
+        return false;
+    }
+
+    *tick = SC_TICK_FROM_MS(value);
+    return true;
+}
+
 static bool
 parse_lock_video_orientation(const char *s,
                              enum sc_lock_video_orientation *lock_mode) {
@@ -505,6 +533,11 @@ parse_display_id(const char *s, uint32_t *display_id) {
 
 static bool
 parse_log_level(const char *s, enum sc_log_level *log_level) {
+    if (!strcmp(s, "verbose")) {
+        *log_level = SC_LOG_LEVEL_VERBOSE;
+        return true;
+    }
+
     if (!strcmp(s, "debug")) {
         *log_level = SC_LOG_LEVEL_DEBUG;
         return true;
@@ -684,6 +717,8 @@ guess_record_format(const char *filename) {
 #define OPT_ENCODER_NAME           1025
 #define OPT_POWER_OFF_ON_CLOSE     1026
 #define OPT_V4L2_SINK              1027
+#define OPT_DISPLAY_BUFFER         1028
+#define OPT_V4L2_BUFFER            1029
 
 bool
 scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
@@ -695,6 +730,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
         {"disable-screensaver",    no_argument,       NULL,
                                                   OPT_DISABLE_SCREENSAVER},
         {"display",                required_argument, NULL, OPT_DISPLAY_ID},
+        {"display-buffer",         required_argument, NULL, OPT_DISPLAY_BUFFER},
         {"encoder",                required_argument, NULL, OPT_ENCODER_NAME},
         {"force-adb-forward",      no_argument,       NULL,
                                                   OPT_FORCE_ADB_FORWARD},
@@ -727,6 +763,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
         {"turn-screen-off",        no_argument,       NULL, 'S'},
 #ifdef HAVE_V4L2
         {"v4l2-sink",              required_argument, NULL, OPT_V4L2_SINK},
+        {"v4l2-buffer",            required_argument, NULL, OPT_V4L2_BUFFER},
 #endif
         {"verbosity",              required_argument, NULL, 'V'},
         {"version",                no_argument,       NULL, 'v'},
@@ -912,10 +949,20 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
             case OPT_POWER_OFF_ON_CLOSE:
                 opts->power_off_on_close = true;
                 break;
+            case OPT_DISPLAY_BUFFER:
+                if (!parse_buffering_time(optarg, &opts->display_buffer)) {
+                    return false;
+                }
+                break;
 #ifdef HAVE_V4L2
             case OPT_V4L2_SINK:
                 opts->v4l2_device = optarg;
                 break;
+            case OPT_V4L2_BUFFER:
+                if (!parse_buffering_time(optarg, &opts->v4l2_buffer)) {
+                    return false;
+                }
+                break;
 #endif
             default:
                 // getopt prints the error message on stderr
@@ -957,7 +1004,8 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
     if (opts->record_filename && !opts->record_format) {
         opts->record_format = guess_record_format(opts->record_filename);
         if (!opts->record_format) {
-            LOGE("No format specified for \"%s\" (try with -F mkv)",
+            LOGE("No format specified for \"%s\" "
+                 "(try with --record-format=mkv)",
                  opts->record_filename);
             return false;
         }

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 compute 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/compat.h

@@ -22,6 +22,18 @@
 # define SCRCPY_LAVF_REQUIRES_REGISTER_ALL
 #endif
 
+
+// In ffmpeg/doc/APIchanges:
+// 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)
 // <https://wiki.libsdl.org/SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH>
 # define SCRCPY_SDL_HAS_HINT_MOUSE_FOCUS_CLICKTHROUGH

app/src/control_msg.c

@@ -1,6 +1,7 @@
 #include "control_msg.h"
 
 #include <assert.h>
+#include <inttypes.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -8,6 +9,52 @@
 #include "util/log.h"
 #include "util/str_util.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) {
     buffer_write32be(&buf[0], position->point.x);
@@ -93,6 +140,94 @@ 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) {

app/src/control_msg.h

@@ -17,8 +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_MOUSE UINT64_C(-1)
-#define POINTER_ID_VIRTUAL_FINGER UINT64_C(-2);
+#define POINTER_ID_VIRTUAL_FINGER UINT64_C(-2)
 
 enum control_msg_type {
     CONTROL_MSG_TYPE_INJECT_KEYCODE,
@@ -84,6 +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

@@ -48,6 +48,10 @@ controller_destroy(struct controller *controller) {
 bool
 controller_push_msg(struct controller *controller,
                       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);

app/src/decoder.c

@@ -140,6 +140,8 @@ decoder_packet_sink_push(struct sc_packet_sink *sink, const AVPacket *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,

app/src/device.c

@@ -1,23 +0,0 @@
-#include "device.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

@@ -1,17 +0,0 @@
-#ifndef DEVICE_H
-#define DEVICE_H
-
-#include "common.h"
-
-#include <stdbool.h>
-
-#include "coords.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/event_converter.c

@@ -14,7 +14,7 @@ convert_keycode_action(SDL_EventType from, enum android_keyevent_action *to) {
 
 static enum android_metastate
 autocomplete_metastate(enum android_metastate metastate) {
-    // fill dependant flags
+    // fill dependent flags
     if (metastate & (AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_RIGHT_ON)) {
         metastate |= AMETA_SHIFT_ON;
     }

app/src/file_handler.c

@@ -6,7 +6,7 @@
 #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) {

app/src/fps_counter.c

@@ -1,11 +1,10 @@
 #include "fps_counter.h"
 
 #include <assert.h>
-#include <SDL2/SDL_timer.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) {
@@ -47,7 +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);
@@ -68,8 +67,8 @@ 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;
+        (now - counter->next_timestamp) / FPS_COUNTER_INTERVAL + 1;
-    counter->next_timestamp += FPS_COUNTER_INTERVAL_MS * elapsed_slices;
+    counter->next_timestamp += FPS_COUNTER_INTERVAL * elapsed_slices;
 }
 
 static int
@@ -82,14 +81,12 @@ run_fps_counter(void *data) {
             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
-            sc_cond_timedwait(&counter->state_cond, &counter->mutex, remaining);
+            sc_cond_timedwait(&counter->state_cond, &counter->mutex,
+                              counter->next_timestamp);
         }
     }
     sc_mutex_unlock(&counter->mutex);
@@ -99,7 +96,7 @@ run_fps_counter(void *data) {
 bool
 fps_counter_start(struct fps_counter *counter) {
     sc_mutex_lock(&counter->mutex);
-    counter->next_timestamp = SDL_GetTicks() + FPS_COUNTER_INTERVAL_MS;
+    counter->next_timestamp = sc_tick_now() + FPS_COUNTER_INTERVAL;
     counter->nr_rendered = 0;
     counter->nr_skipped = 0;
     sc_mutex_unlock(&counter->mutex);
@@ -150,6 +147,10 @@ fps_counter_interrupt(struct fps_counter *counter) {
 void
 fps_counter_join(struct fps_counter *counter) {
     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);
     }
 }
@@ -161,7 +162,7 @@ fps_counter_add_rendered_frame(struct fps_counter *counter) {
     }
 
     sc_mutex_lock(&counter->mutex);
-    uint32_t now = SDL_GetTicks();
+    sc_tick now = sc_tick_now();
     check_interval_expired(counter, now);
     ++counter->nr_rendered;
     sc_mutex_unlock(&counter->mutex);
@@ -174,7 +175,7 @@ fps_counter_add_skipped_frame(struct fps_counter *counter) {
     }
 
     sc_mutex_lock(&counter->mutex);
-    uint32_t now = SDL_GetTicks();
+    sc_tick now = sc_tick_now();
     check_interval_expired(counter, now);
     ++counter->nr_skipped;
     sc_mutex_unlock(&counter->mutex);

app/src/fps_counter.h

@@ -24,7 +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/input_manager.c

@@ -52,9 +52,13 @@ is_shortcut_mod(struct input_manager *im, uint16_t sdl_mod) {
 }
 
 void
-input_manager_init(struct input_manager *im,
+input_manager_init(struct input_manager *im, struct controller *controller,
-                   const struct scrcpy_options *options)
+                   struct screen *screen,
-{
+                   const struct scrcpy_options *options) {
+    im->controller = controller;
+    im->screen = screen;
+    im->repeat = 0;
+
     im->control = options->control;
     im->forward_key_repeat = options->forward_key_repeat;
     im->prefer_text = options->prefer_text;
@@ -517,7 +521,7 @@ input_manager_process_key(struct input_manager *im,
                 return;
             case SDLK_i:
                 if (!shift && !repeat && down) {
-                    switch_fps_counter_state(im->fps_counter);
+                    switch_fps_counter_state(&im->screen->fps_counter);
                 }
                 return;
             case SDLK_n:
@@ -591,8 +595,12 @@ convert_mouse_motion(const SDL_MouseMotionEvent *from, struct screen *screen,
 static void
 input_manager_process_mouse_motion(struct input_manager *im,
                                    const SDL_MouseMotionEvent *event) {
-    if (!event->state) {
+    uint32_t mask = SDL_BUTTON_LMASK;
-        // do not send motion events when no button is pressed
+    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) {

app/src/input_manager.h

@@ -14,7 +14,6 @@
 
 struct input_manager {
     struct controller *controller;
-    struct fps_counter *fps_counter;
     struct screen *screen;
 
     // SDL reports repeated events as a boolean, but Android expects the actual
@@ -43,8 +42,8 @@ struct input_manager {
 };
 
 void
-input_manager_init(struct input_manager *im,
+input_manager_init(struct input_manager *im, struct controller *controller,
-                   const struct scrcpy_options *options);
+                   struct screen *screen, const struct scrcpy_options *options);
 
 bool
 input_manager_handle_event(struct input_manager *im, SDL_Event *event);

app/src/main.c

@@ -38,24 +38,6 @@ print_version(void) {
 #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__
@@ -79,8 +61,7 @@ main(int argc, char *argv[]) {
         return 1;
     }
 
-    SDL_LogPriority sdl_log = convert_log_level_to_sdl(args.opts.log_level);
+    sc_set_log_level(args.opts.log_level);
-    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, sdl_log);
 
     if (args.help) {
         scrcpy_print_usage(argv[0]);

app/src/recorder.c

@@ -35,11 +35,14 @@ record_packet_new(const AVPacket *packet) {
         return NULL;
     }
 
-    // av_packet_ref() does not initialize all fields in old FFmpeg versions
+    rec->packet = av_packet_alloc();
-    // See <https://github.com/Genymobile/scrcpy/issues/707>
+    if (!rec->packet) {
-    av_init_packet(&rec->packet);
+        free(rec);
+        return NULL;
+    }
 
-    if (av_packet_ref(&rec->packet, packet)) {
+    if (av_packet_ref(rec->packet, packet)) {
+        av_packet_free(&rec->packet);
         free(rec);
         return NULL;
     }
@@ -48,15 +51,15 @@ record_packet_new(const AVPacket *packet) {
 
 static void
 record_packet_delete(struct record_packet *rec) {
-    av_packet_unref(&rec->packet);
+    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);
     }
 }
@@ -132,20 +135,20 @@ run_recorder(void *data) {
     for (;;) {
         sc_mutex_lock(&recorder->mutex);
 
-        while (!recorder->stopped && queue_is_empty(&recorder->queue)) {
+        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)) {
+        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;
+                last->packet->duration = 100000;
-                bool ok = recorder_write(recorder, &last->packet);
+                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
@@ -158,7 +161,7 @@ run_recorder(void *data) {
         }
 
         struct record_packet *rec;
-        queue_take(&recorder->queue, next, &rec);
+        sc_queue_take(&recorder->queue, next, &rec);
 
         sc_mutex_unlock(&recorder->mutex);
 
@@ -172,13 +175,14 @@ run_recorder(void *data) {
         }
 
         // config packets have no PTS, we must ignore them
-        if (rec->packet.pts != AV_NOPTS_VALUE
+        if (rec->packet->pts != AV_NOPTS_VALUE
-            && previous->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");
@@ -231,7 +235,7 @@ recorder_open(struct recorder *recorder, const AVCodec *input_codec) {
         goto error_mutex_destroy;
     }
 
-    queue_init(&recorder->queue);
+    sc_queue_init(&recorder->queue);
     recorder->stopped = false;
     recorder->failed = false;
     recorder->header_written = false;
@@ -336,7 +340,7 @@ recorder_push(struct recorder *recorder, const AVPacket *packet) {
         return false;
     }
 
-    queue_push(&recorder->queue, next, rec);
+    sc_queue_push(&recorder->queue, next, rec);
     sc_cond_signal(&recorder->queue_cond);
 
     sc_mutex_unlock(&recorder->mutex);

app/src/recorder.h

@@ -13,11 +13,11 @@
 #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

app/src/scrcpy.c

@@ -15,10 +15,8 @@
 
 #include "controller.h"
 #include "decoder.h"
-#include "device.h"
 #include "events.h"
 #include "file_handler.h"
-#include "fps_counter.h"
 #include "input_manager.h"
 #include "recorder.h"
 #include "screen.h"
@@ -31,30 +29,18 @@
 # include "v4l2_sink.h"
 #endif
 
-static struct server server;
+struct scrcpy {
-static struct screen screen;
+    struct server server;
-static struct fps_counter fps_counter;
+    struct screen screen;
-static struct stream stream;
+    struct stream stream;
-static struct decoder decoder;
+    struct decoder decoder;
-static struct recorder recorder;
+    struct recorder recorder;
 #ifdef HAVE_V4L2
-static struct sc_v4l2_sink v4l2_sink;
+    struct sc_v4l2_sink v4l2_sink;
 #endif
-static struct controller controller;
+    struct controller controller;
-static struct file_handler file_handler;
+    struct file_handler file_handler;
-
+    struct input_manager input_manager;
-static struct input_manager input_manager = {
-    .controller = &controller,
-    .fps_counter = &fps_counter,
-    .screen = &screen,
-    .repeat = 0,
-
-    // initialized later
-    .prefer_text = false,
-    .sdl_shortcut_mods = {
-        .data = {0},
-        .count = 0,
-    },
 };
 
 #ifdef _WIN32
@@ -145,7 +131,8 @@ 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");
@@ -170,17 +157,17 @@ handle_event(SDL_Event *event, const struct scrcpy_options *options) {
             } else {
                 action = ACTION_PUSH_FILE;
             }
-            file_handler_request(&file_handler, action, file);
+            file_handler_request(&s->file_handler, action, file);
             goto end;
         }
     }
 
-    bool consumed = screen_handle_event(&screen, event);
+    bool consumed = screen_handle_event(&s->screen, event);
     if (consumed) {
         goto end;
     }
 
-    consumed = input_manager_handle_event(&input_manager, event);
+    consumed = input_manager_handle_event(&s->input_manager, event);
     (void) consumed;
 
 end:
@@ -188,10 +175,10 @@ end:
 }
 
 static bool
-event_loop(const struct scrcpy_options *options) {
+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;
@@ -229,28 +216,41 @@ av_log_callback(void *avcl, int level, const char *fmt, va_list vl) {
     if (priority == 0) {
         return;
     }
-    char *local_fmt = 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
+    memcpy(local_fmt, "[FFmpeg] ", 9); // do not write the final '\0'
-    strcpy(local_fmt, "[FFmpeg] ");
+    memcpy(local_fmt + 9, fmt, fmt_len + 1); // include '\0'
-    strcpy(local_fmt + 9, fmt);
     SDL_LogMessageV(SDL_LOG_CATEGORY_VIDEO, priority, local_fmt, vl);
     free(local_fmt);
 }
 
+static void
+stream_on_eos(struct stream *stream, void *userdata) {
+    (void) stream;
+    (void) userdata;
+
+    SDL_Event stop_event;
+    stop_event.type = EVENT_STREAM_STOPPED;
+    SDL_PushEvent(&stop_event);
+}
+
 bool
 scrcpy(const struct scrcpy_options *options) {
-    if (!server_init(&server)) {
+    static struct scrcpy scrcpy;
+    struct scrcpy *s = &scrcpy;
+
+    if (!server_init(&s->server)) {
         return false;
     }
 
     bool ret = false;
 
     bool server_started = false;
-    bool fps_counter_initialized = false;
     bool file_handler_initialized = false;
     bool recorder_initialized = false;
 #ifdef HAVE_V4L2
@@ -263,6 +263,7 @@ scrcpy(const struct scrcpy_options *options) {
 
     bool record = !!options->record_filename;
     struct server_params params = {
+        .serial = options->serial,
         .log_level = options->log_level,
         .crop = options->crop,
         .port_range = options->port_range,
@@ -279,7 +280,7 @@ scrcpy(const struct scrcpy_options *options) {
         .force_adb_forward = options->force_adb_forward,
         .power_off_on_close = options->power_off_on_close,
     };
-    if (!server_start(&server, options->serial, &params)) {
+    if (!server_start(&s->server, &params)) {
         goto end;
     }
 
@@ -290,33 +291,19 @@ scrcpy(const struct scrcpy_options *options) {
         goto end;
     }
 
-    if (!server_connect_to(&server)) {
-        goto end;
-    }
-
     char device_name[DEVICE_NAME_FIELD_LENGTH];
     struct size frame_size;
 
-    // screenrecord does not send frames when the screen content does not
+    if (!server_connect_to(&s->server, device_name, &frame_size)) {
-    // 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)) {
         goto end;
     }
 
-    if (options->display) {
+    if (options->display && options->control) {
-        if (!fps_counter_init(&fps_counter)) {
+        if (!file_handler_init(&s->file_handler, s->server.serial,
+                               options->push_target)) {
             goto end;
         }
-        fps_counter_initialized = true;
+        file_handler_initialized = true;
-
-        if (options->control) {
-            if (!file_handler_init(&file_handler, server.serial,
-                                   options->push_target)) {
-                goto end;
-            }
-            file_handler_initialized = true;
-        }
     }
 
     struct decoder *dec = NULL;
@@ -325,47 +312,60 @@ scrcpy(const struct scrcpy_options *options) {
     needs_decoder |= !!options->v4l2_device;
 #endif
     if (needs_decoder) {
-        decoder_init(&decoder);
+        decoder_init(&s->decoder);
-        dec = &decoder;
+        dec = &s->decoder;
     }
 
     struct recorder *rec = NULL;
     if (record) {
-        if (!recorder_init(&recorder,
+        if (!recorder_init(&s->recorder,
                            options->record_filename,
                            options->record_format,
                            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);
+    const struct stream_callbacks stream_cbs = {
+        .on_eos = stream_on_eos,
+    };
+    stream_init(&s->stream, s->server.video_socket, &stream_cbs, NULL);
 
     if (dec) {
-        stream_add_sink(&stream, &dec->packet_sink);
+        stream_add_sink(&s->stream, &dec->packet_sink);
     }
 
     if (rec) {
-        stream_add_sink(&stream, &rec->packet_sink);
+        stream_add_sink(&s->stream, &rec->packet_sink);
+    }
+
+    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(&s->controller, &msg)) {
+                LOGW("Could not request 'set screen power mode'");
+            }
+        }
     }
 
     if (options->display) {
-        if (options->control) {
-            if (!controller_init(&controller, server.control_socket)) {
-                goto end;
-            }
-            controller_initialized = true;
-
-            if (!controller_start(&controller)) {
-                goto end;
-            }
-            controller_started = true;
-        }
-
         const char *window_title =
             options->window_title ? options->window_title : device_name;
 
@@ -381,33 +381,25 @@ scrcpy(const struct scrcpy_options *options) {
             .rotation = options->rotation,
             .mipmaps = options->mipmaps,
             .fullscreen = options->fullscreen,
+            .buffering_time = options->display_buffer,
         };
 
-        if (!screen_init(&screen, &fps_counter, &screen_params)) {
+        if (!screen_init(&s->screen, &screen_params)) {
             goto end;
         }
         screen_initialized = true;
 
-        decoder_add_sink(&decoder, &screen.frame_sink);
+        decoder_add_sink(&s->decoder, &s->screen.frame_sink);
-
-        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)) {
-                LOGW("Could not request 'set screen power mode'");
-            }
-        }
     }
 
 #ifdef HAVE_V4L2
     if (options->v4l2_device) {
-        if (!sc_v4l2_sink_init(&v4l2_sink, options->v4l2_device, frame_size)) {
+        if (!sc_v4l2_sink_init(&s->v4l2_sink, options->v4l2_device, frame_size,
+                               options->v4l2_buffer)) {
             goto end;
         }
 
-        decoder_add_sink(&decoder, &v4l2_sink.frame_sink);
+        decoder_add_sink(&s->decoder, &s->v4l2_sink.frame_sink);
 
         v4l2_sink_initialized = true;
     }
@@ -415,78 +407,74 @@ scrcpy(const struct scrcpy_options *options) {
 
     // now we consumed the header values, the socket receives the video stream
     // start the stream
-    if (!stream_start(&stream)) {
+    if (!stream_start(&s->stream)) {
         goto end;
     }
     stream_started = true;
 
-    input_manager_init(&input_manager, options);
+    input_manager_init(&s->input_manager, &s->controller, &s->screen, options);
 
-    ret = event_loop(options);
+    ret = event_loop(s, options);
     LOGD("quit...");
 
     // 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(&screen);
+    screen_hide_window(&s->screen);
 
 end:
     // The stream is not stopped explicitly, because it will stop by itself on
     // end-of-stream
     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) {
+    if (screen_initialized) {
-        fps_counter_interrupt(&fps_counter);
+        screen_interrupt(&s->screen);
     }
 
     if (server_started) {
         // shutdown the sockets and kill the server
-        server_stop(&server);
+        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(&v4l2_sink);
+        sc_v4l2_sink_destroy(&s->v4l2_sink);
     }
 #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_destroy(&screen);
+        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_join(&s->file_handler);
-        file_handler_destroy(&file_handler);
+        file_handler_destroy(&s->file_handler);
     }
 
-    if (fps_counter_initialized) {
+    server_destroy(&s->server);
-        fps_counter_join(&fps_counter);
-        fps_counter_destroy(&fps_counter);
-    }
-
-    server_destroy(&server);
 
     return ret;
 }

app/src/scrcpy.h

@@ -7,7 +7,10 @@
 #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,
@@ -77,6 +80,8 @@ struct scrcpy_options {
     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;
@@ -125,6 +130,8 @@ struct scrcpy_options {
     .window_width = 0, \
     .window_height = 0, \
     .display_id = 0, \
+    .display_buffer = 0, \
+    .v4l2_buffer = 0, \
     .show_touches = false, \
     .fullscreen = false, \
     .always_on_top = false, \

app/src/screen.c

@@ -41,6 +41,18 @@ get_window_size(const struct screen *screen) {
     return size;
 }
 
+static struct point
+get_window_position(const struct screen *screen) {
+    int x;
+    int y;
+    SDL_GetWindowPosition(screen->window, &x, &y);
+
+    struct 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) {
@@ -122,13 +134,6 @@ 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
@@ -269,15 +274,17 @@ screen_frame_sink_close(struct sc_frame_sink *sink) {
 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);
+}
 
-    bool previous_frame_skipped;
+static void
-    bool ok = video_buffer_push(&screen->vb, frame, &previous_frame_skipped);
+sc_video_buffer_on_new_frame(struct sc_video_buffer *vb, bool previous_skipped,
-    if (!ok) {
+                             void *userdata) {
-        return false;
+    (void) vb;
-    }
+    struct screen *screen = userdata;
 
-    if (previous_frame_skipped) {
+    if (previous_skipped) {
-        fps_counter_add_skipped_frame(screen->fps_counter);
+        fps_counter_add_skipped_frame(&screen->fps_counter);
         // The EVENT_NEW_FRAME triggered for the previous frame will consume
         // this new frame instead
     } else {
@@ -288,26 +295,37 @@ screen_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
         // Post the event on the UI thread
         SDL_PushEvent(&new_frame_event);
     }
-
-    return true;
 }
 
 bool
-screen_init(struct screen *screen, struct fps_counter *fps_counter,
+screen_init(struct screen *screen, const struct screen_params *params) {
-            const struct screen_params *params) {
-    screen->fps_counter = fps_counter;
-
     screen->resize_pending = false;
     screen->has_frame = false;
     screen->fullscreen = false;
     screen->maximized = false;
 
-    bool ok = video_buffer_init(&screen->vb);
+    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) {
@@ -344,16 +362,14 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,
                                       window_flags);
     if (!screen->window) {
         LOGC("Could not create window: %s", SDL_GetError());
-        return false;
+        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());
-        SDL_DestroyWindow(screen->window);
+        goto error_destroy_window;
-        video_buffer_destroy(&screen->vb);
-        return false;
     }
 
     SDL_RendererInfo renderer_info;
@@ -402,20 +418,13 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,
     screen->texture = create_texture(screen);
     if (!screen->texture) {
         LOGC("Could not create texture: %s", SDL_GetError());
-        SDL_DestroyRenderer(screen->renderer);
+        goto error_destroy_renderer;
-        SDL_DestroyWindow(screen->window);
-        video_buffer_destroy(&screen->vb);
-        return false;
     }
 
     screen->frame = av_frame_alloc();
     if (!screen->frame) {
         LOGC("Could not create screen frame");
-        SDL_DestroyTexture(screen->texture);
+        goto error_destroy_texture;
-        SDL_DestroyRenderer(screen->renderer);
-        SDL_DestroyWindow(screen->window);
-        video_buffer_destroy(&screen->vb);
-        return false;
     }
 
     // Reset the window size to trigger a SIZE_CHANGED event, to workaround
@@ -446,6 +455,22 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,
 #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
@@ -458,6 +483,18 @@ 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
@@ -467,7 +504,8 @@ screen_destroy(struct screen *screen) {
     SDL_DestroyTexture(screen->texture);
     SDL_DestroyRenderer(screen->renderer);
     SDL_DestroyWindow(screen->window);
-    video_buffer_destroy(&screen->vb);
+    fps_counter_destroy(&screen->fps_counter);
+    sc_video_buffer_destroy(&screen->vb);
 }
 
 static void
@@ -573,10 +611,10 @@ update_texture(struct screen *screen, const AVFrame *frame) {
 static bool
 screen_update_frame(struct screen *screen) {
     av_frame_unref(screen->frame);
-    video_buffer_consume(&screen->vb, screen->frame);
+    sc_video_buffer_consume(&screen->vb, screen->frame);
     AVFrame *frame = screen->frame;
 
-    fps_counter_add_rendered_frame(screen->fps_counter);
+    fps_counter_add_rendered_frame(&screen->fps_counter);
 
     struct size new_frame_size = {frame->width, frame->height};
     if (!prepare_for_frame(screen, new_frame_size)) {
@@ -645,9 +683,20 @@ screen_resize_to_fit(struct screen *screen) {
         return;
     }
 
+    struct point point = get_window_position(screen);
+    struct size window_size = get_window_size(screen);
+
     struct size optimal_size =
-        get_optimal_window_size(screen, screen->content_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);
 }
@@ -709,6 +758,7 @@ screen_handle_event(struct screen *screen, SDL_Event *event) {
                     }
                     screen->maximized = false;
                     apply_pending_resize(screen);
+                    screen_render(screen, true);
                     break;
             }
             return true;

app/src/screen.h

@@ -8,6 +8,7 @@
 #include <libavformat/avformat.h>
 
 #include "coords.h"
+#include "fps_counter.h"
 #include "opengl.h"
 #include "trait/frame_sink.h"
 #include "video_buffer.h"
@@ -19,8 +20,8 @@ struct screen {
     bool open; // track the open/close state to assert correct behavior
 #endif
 
-    struct video_buffer vb;
+    struct sc_video_buffer vb;
-    struct fps_counter *fps_counter;
+    struct fps_counter fps_counter;
 
     SDL_Window *window;
     SDL_Renderer *renderer;
@@ -62,12 +63,22 @@ struct screen_params {
     bool mipmaps;
 
     bool fullscreen;
+
+    sc_tick buffering_time;
 };
 
 // initialize screen, create window, renderer and texture (window is hidden)
 bool
-screen_init(struct screen *screen, struct fps_counter *fps_counter,
+screen_init(struct screen *screen, const struct screen_params *params);
-            const struct screen_params *params);
+
+// request to interrupt any inner thread
+// must be called before screen_join()
+void
+screen_interrupt(struct screen *screen);
+
+// join any inner thread
+void
+screen_join(struct screen *screen);
 
 // destroy window, renderer and texture (if any)
 void

app/src/server.c

@@ -235,6 +235,8 @@ enable_tunnel_any_port(struct server *server, struct sc_port_range port_range,
 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:
@@ -306,7 +308,7 @@ 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(server->serial, cmd, ARRAY_LEN(cmd));
 }
 
 static socket_t
@@ -407,28 +409,28 @@ run_wait_server(void *data) {
 }
 
 bool
-server_start(struct server *server, const char *serial,
+server_start(struct server *server, const struct server_params *params) {
-             const struct server_params *params) {
+    if (params->serial) {
-    if (serial) {
+        server->serial = strdup(params->serial);
-        server->serial = strdup(serial);
         if (!server->serial) {
             return false;
         }
     }
 
-    if (!push_server(serial)) {
+    if (!push_server(params->serial)) {
-        goto error1;
+        /* server->serial will be freed on server_destroy() */
+        return false;
     }
 
     if (!enable_tunnel_any_port(server, params->port_range,
                                 params->force_adb_forward)) {
-        goto error1;
+        return false;
     }
 
     // server will connect to our server socket
     server->process = execute_server(server, params);
     if (server->process == PROCESS_NONE) {
-        goto error2;
+        goto error;
     }
 
     // If the server process dies before connecting to the server socket, then
@@ -442,14 +444,14 @@ server_start(struct server *server, const char *serial,
     if (!ok) {
         process_terminate(server->process);
         process_wait(server->process, true); // ignore exit code
-        goto error2;
+        goto error;
     }
 
     server->tunnel_enabled = true;
 
     return true;
 
-error2:
+error:
     if (!server->tunnel_forward) {
         bool was_closed =
             atomic_flag_test_and_set(&server->server_socket_closed);
@@ -459,13 +461,32 @@ error2:
         close_socket(server->server_socket);
     }
     disable_tunnel(server);
-error1:
+
-    free(server->serial);
     return false;
 }
 
+static 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;
+}
+
 bool
-server_connect_to(struct server *server) {
+server_connect_to(struct server *server, char *device_name, struct size *size) {
     if (!server->tunnel_forward) {
         server->video_socket = net_accept(server->server_socket);
         if (server->video_socket == INVALID_SOCKET) {
@@ -505,7 +526,8 @@ server_connect_to(struct server *server) {
     disable_tunnel(server); // ignore failure
     server->tunnel_enabled = false;
 
-    return true;
+    // The sockets will be closed on stop if device_read_info() fails
+    return device_read_info(server->video_socket, device_name, size);
 }
 
 void
@@ -532,10 +554,10 @@ server_stop(struct server *server) {
     sc_mutex_lock(&server->mutex);
     bool signaled = false;
     if (!server->process_terminated) {
-#define WATCHDOG_DELAY_MS 1000
+#define WATCHDOG_DELAY SC_TICK_FROM_SEC(1)
         signaled = sc_cond_timedwait(&server->process_terminated_cond,
                                      &server->mutex,
-                                     WATCHDOG_DELAY_MS);
+                                     sc_tick_now() + WATCHDOG_DELAY);
     }
     sc_mutex_unlock(&server->mutex);
 

app/src/server.h

@@ -8,6 +8,7 @@
 #include <stdint.h>
 
 #include "adb.h"
+#include "coords.h"
 #include "scrcpy.h"
 #include "util/log.h"
 #include "util/net.h"
@@ -32,6 +33,7 @@ struct server {
 };
 
 struct server_params {
+    const char *serial;
     enum sc_log_level log_level;
     const char *crop;
     const char *codec_options;
@@ -55,12 +57,13 @@ server_init(struct server *server);
 
 // push, enable tunnel et start the server
 bool
-server_start(struct server *server, const char *serial,
+server_start(struct server *server, const struct server_params *params);
-             const struct server_params *params);
 
+#define DEVICE_NAME_FIELD_LENGTH 64
 // block until the communication with the server is established
+// device_name must point to a buffer of at least DEVICE_NAME_FIELD_LENGTH bytes
 bool
-server_connect_to(struct server *server);
+server_connect_to(struct server *server, char *device_name, struct size *size);
 
 // disconnect and kill the server process
 void

app/src/stream.c

@@ -3,7 +3,6 @@
 #include <assert.h>
 #include <libavformat/avformat.h>
 #include <libavutil/time.h>
-#include <SDL2/SDL_events.h>
 #include <unistd.h>
 
 #include "decoder.h"
@@ -58,13 +57,6 @@ 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
 push_packet_to_sinks(struct stream *stream, const AVPacket *packet) {
     for (unsigned i = 0; i < stream->sink_count; ++i) {
@@ -112,33 +104,38 @@ 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) {
+        if (stream->pending) {
-            offset = stream->pending.size;
+            offset = stream->pending->size;
-            if (av_grow_packet(&stream->pending, packet->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)) {
+            stream->pending = av_packet_alloc();
-                LOGE("Could not create packet");
+            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->pts = packet->pts;
-            stream->pending.dts = packet->dts;
+            stream->pending->dts = packet->dts;
-            stream->pending.flags = packet->flags;
+            stream->pending->flags = packet->flags;
-            packet = &stream->pending;
+            packet = stream->pending;
         }
     }
 
@@ -152,10 +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_free(&stream->pending);
-            av_packet_unref(&stream->pending);
         }
 
         if (!ok) {
@@ -223,16 +219,21 @@ run_stream(void *data) {
     // 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);
+        ok = stream_push_packet(stream, packet);
-        av_packet_unref(&packet);
+        av_packet_unref(packet);
         if (!ok) {
             // cannot process packet (error already logged)
             break;
@@ -241,25 +242,34 @@ run_stream(void *data) {
 
     LOGD("End of frames");
 
-    if (stream->has_pending) {
+    if (stream->pending) {
-        av_packet_unref(&stream->pending);
+        av_packet_free(&stream->pending);
     }
 
+    av_packet_free(&packet);
+finally_close_parser:
     av_parser_close(stream->parser);
 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) {
+stream_init(struct stream *stream, socket_t socket,
+            const struct stream_callbacks *cbs, void *cbs_userdata) {
     stream->socket = socket;
-    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

app/src/stream.h

@@ -6,7 +6,6 @@
 #include <stdbool.h>
 #include <stdint.h>
 #include <libavformat/avformat.h>
-#include <SDL2/SDL_atomic.h>
 
 #include "trait/packet_sink.h"
 #include "util/net.h"
@@ -25,12 +24,19 @@ struct stream {
     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);
+stream_init(struct stream *stream, socket_t socket,
+            const struct stream_callbacks *cbs, void *cbs_userdata);
 
 void
 stream_add_sink(struct stream *stream, struct sc_packet_sink *sink);

app/src/sys/win/process.c

@@ -6,7 +6,9 @@
 #include "util/log.h"
 #include "util/str_util.h"
 
-static int
+#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>
@@ -15,9 +17,9 @@ build_cmd(char *cmd, size_t len, const char *const argv[]) {
     size_t ret = xstrjoin(cmd, argv, ' ', len);
     if (ret >= len) {
         LOGE("Command too long (%" PRIsizet " chars)", len - 1);
-        return -1;
+        return false;
     }
-    return 0;
+    return true;
 }
 
 enum process_result
@@ -27,13 +29,14 @@ process_execute(const char *const argv[], HANDLE *handle) {
     memset(&si, 0, sizeof(si));
     si.cb = sizeof(si);
 
-    char cmd[256];
+    char *cmd = malloc(CMD_MAX_LEN);
-    if (build_cmd(cmd, sizeof(cmd), argv)) {
+    if (!cmd || !build_cmd(cmd, CMD_MAX_LEN, argv)) {
         *handle = NULL;
         return PROCESS_ERROR_GENERIC;
     }
 
     wchar_t *wide = utf8_to_wide_char(cmd);
+    free(cmd);
     if (!wide) {
         LOGC("Could not allocate wide char string");
         return PROCESS_ERROR_GENERIC;

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
+#ifndef SC_LOG_H
-#define LOG_H
+#define SC_LOG_H
+
+#include "common.h"
 
 #include <SDL2/SDL_log.h>
 
+#include "scrcpy.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

app/src/util/queue.h

@@ -1,6 +1,6 @@
 // generic intrusive FIFO queue
-#ifndef QUEUE_H
+#ifndef SC_QUEUE_H
-#define QUEUE_H
+#define SC_QUEUE_H
 
 #include "common.h"
 
@@ -10,15 +10,15 @@
 
 // To define a queue type of "struct foo":
 //    struct queue_foo QUEUE(struct foo);
-#define QUEUE(TYPE) { \
+#define SC_QUEUE(TYPE) { \
     TYPE *first; \
     TYPE *last; \
 }
 
-#define queue_init(PQ) \
+#define sc_queue_init(PQ) \
     (void) ((PQ)->first = (PQ)->last = NULL)
 
-#define queue_is_empty(PQ) \
+#define sc_queue_is_empty(PQ) \
     !(PQ)->first
 
 // NEXTFIELD is the field in the ITEM type used for intrusive linked-list
@@ -30,30 +30,30 @@
 //    };
 //
 //    // define the type "struct my_queue"
-//    struct my_queue QUEUE(struct foo);
+//    struct my_queue SC_QUEUE(struct foo);
 //
 //    struct my_queue queue;
-//    queue_init(&queue);
+//    sc_queue_init(&queue);
 //
 //    struct foo v1 = { .value = 42 };
 //    struct foo v2 = { .value = 27 };
 //
-//    queue_push(&queue, next, v1);
+//    sc_queue_push(&queue, next, v1);
-//    queue_push(&queue, next, v2);
+//    sc_queue_push(&queue, next, v2);
 //
 //    struct foo *foo;
-//    queue_take(&queue, next, &foo);
+//    sc_queue_take(&queue, next, &foo);
 //    assert(foo->value == 42);
-//    queue_take(&queue, next, &foo);
+//    sc_queue_take(&queue, next, &foo);
 //    assert(foo->value == 27);
-//    assert(queue_is_empty(&queue));
+//    assert(sc_queue_is_empty(&queue));
 //
 
 // push a new item into the queue
-#define queue_push(PQ, NEXTFIELD, ITEM) \
+#define sc_queue_push(PQ, NEXTFIELD, ITEM) \
     (void) ({ \
         (ITEM)->NEXTFIELD = NULL; \
-        if (queue_is_empty(PQ)) { \
+        if (sc_queue_is_empty(PQ)) { \
             (PQ)->first = (PQ)->last = (ITEM); \
         } else { \
             (PQ)->last->NEXTFIELD = (ITEM); \
@@ -65,9 +65,9 @@
 // the result is stored in *(PITEM)
 // (without typeof(), we could not store a local variable having the correct
 // type so that we can "return" it)
-#define queue_take(PQ, NEXTFIELD, PITEM) \
+#define sc_queue_take(PQ, NEXTFIELD, PITEM) \
     (void) ({ \
-        assert(!queue_is_empty(PQ)); \
+        assert(!sc_queue_is_empty(PQ)); \
         *(PITEM) = (PQ)->first; \
         (PQ)->first = (PQ)->first->NEXTFIELD; \
     })

app/src/util/str_util.h

@@ -16,7 +16,7 @@ size_t
 xstrncpy(char *dest, const char *src, size_t n);
 
 // join tokens by sep into dst
-// returns the number of chars actually written (max n-1) if no trucation
+// returns the number of chars actually written (max n-1) if no truncation
 // occurred, or n if truncated
 size_t
 xstrjoin(char *dst, const char *const tokens[], char sep, size_t n);

app/src/util/thread.c

@@ -31,7 +31,7 @@ sc_mutex_init(sc_mutex *mutex) {
 
     mutex->mutex = sdl_mutex;
 #ifndef NDEBUG
-    mutex->locker = 0;
+    atomic_init(&mutex->locker, 0);
 #endif
     return true;
 }
@@ -52,7 +52,8 @@ sc_mutex_lock(sc_mutex *mutex) {
         abort();
     }
 
-    mutex->locker = sc_thread_get_id();
+    atomic_store_explicit(&mutex->locker, sc_thread_get_id(),
+                          memory_order_relaxed);
 #else
     (void) r;
 #endif
@@ -62,7 +63,7 @@ void
 sc_mutex_unlock(sc_mutex *mutex) {
 #ifndef NDEBUG
     assert(sc_mutex_held(mutex));
-    mutex->locker = 0;
+    atomic_store_explicit(&mutex->locker, 0, memory_order_relaxed);
 #endif
     int r = SDL_UnlockMutex(mutex->mutex);
 #ifndef NDEBUG
@@ -83,7 +84,9 @@ sc_thread_get_id(void) {
 #ifndef NDEBUG
 bool
 sc_mutex_held(struct sc_mutex *mutex) {
-    return mutex->locker == sc_thread_get_id();
+    sc_thread_id locker_id =
+        atomic_load_explicit(&mutex->locker, memory_order_relaxed);
+    return locker_id == sc_thread_get_id();
 }
 #endif
 
@@ -112,14 +115,21 @@ sc_cond_wait(sc_cond *cond, sc_mutex *mutex) {
         abort();
     }
 
-    mutex->locker = sc_thread_get_id();
+    atomic_store_explicit(&mutex->locker, sc_thread_get_id(),
+                          memory_order_relaxed);
 #else
     (void) r;
 #endif
 }
 
 bool
-sc_cond_timedwait(sc_cond *cond, sc_mutex *mutex, uint32_t ms) {
+sc_cond_timedwait(sc_cond *cond, sc_mutex *mutex, sc_tick deadline) {
+    sc_tick now = sc_tick_now();
+    if (deadline <= now) {
+        return false; // timeout
+    }
+
+    uint32_t ms = SC_TICK_TO_MS(deadline - now);
     int r = SDL_CondWaitTimeout(cond->cond, mutex->mutex, ms);
 #ifndef NDEBUG
     if (r < 0) {
@@ -127,7 +137,8 @@ sc_cond_timedwait(sc_cond *cond, sc_mutex *mutex, uint32_t ms) {
         abort();
     }
 
-    mutex->locker = sc_thread_get_id();
+    atomic_store_explicit(&mutex->locker, sc_thread_get_id(),
+                          memory_order_relaxed);
 #endif
     assert(r == 0 || r == SDL_MUTEX_TIMEDOUT);
     return r == 0;

app/src/util/thread.h

@@ -3,8 +3,10 @@
 
 #include "common.h"
 
+#include <stdatomic.h>
 #include <stdbool.h>
-#include <stdint.h>
+
+#include "tick.h"
 
 /* Forward declarations */
 typedef struct SDL_Thread SDL_Thread;
@@ -12,7 +14,8 @@ typedef struct SDL_mutex SDL_mutex;
 typedef struct SDL_cond SDL_cond;
 
 typedef int sc_thread_fn(void *);
-typedef unsigned int sc_thread_id;
+typedef unsigned sc_thread_id;
+typedef atomic_uint sc_atomic_thread_id;
 
 typedef struct sc_thread {
     SDL_Thread *thread;
@@ -21,7 +24,7 @@ typedef struct sc_thread {
 typedef struct sc_mutex {
     SDL_mutex *mutex;
 #ifndef NDEBUG
-    sc_thread_id locker;
+    sc_atomic_thread_id locker;
 #endif
 } sc_mutex;
 
@@ -70,7 +73,7 @@ sc_cond_wait(sc_cond *cond, sc_mutex *mutex);
 
 // return true on signaled, false on timeout
 bool
-sc_cond_timedwait(sc_cond *cond, sc_mutex *mutex, uint32_t ms);
+sc_cond_timedwait(sc_cond *cond, sc_mutex *mutex, sc_tick deadline);
 
 void
 sc_cond_signal(sc_cond *cond);

app/src/util/tick.c

@@ -0,0 +1,16 @@
+#include "tick.h"
+
+#include <SDL2/SDL_timer.h>
+
+sc_tick
+sc_tick_now(void) {
+    // SDL_GetTicks() resolution is in milliseconds, but sc_tick are expressed
+    // in microseconds to avoid loosing precision on PTS.
+    //
+    // SDL_GetPerformanceCounter()/SDL_GetPerformanceFrequency() could be used,
+    // but:
+    //  - the conversions (to avoid overflow) are not zero-cost, since the
+    //    frequency is not known at compile time;
+    //  - in practice, we don't need more precision for now.
+    return (sc_tick) SDL_GetTicks() * 1000;
+}

app/src/util/tick.h

@@ -0,0 +1,21 @@
+#ifndef SC_TICK_H
+#define SC_TICK_H
+
+#include <stdint.h>
+
+typedef int64_t sc_tick;
+#define PRItick PRIi64
+#define SC_TICK_FREQ 1000000 // microsecond
+
+// To be adapted if SC_TICK_FREQ changes
+#define SC_TICK_TO_US(tick) (tick)
+#define SC_TICK_TO_MS(tick) ((tick) / 1000)
+#define SC_TICK_TO_SEC(tick) ((tick) / 1000000)
+#define SC_TICK_FROM_US(us) (us)
+#define SC_TICK_FROM_MS(ms) ((ms) * 1000)
+#define SC_TICK_FROM_SEC(sec) ((sec) * 1000000)
+
+sc_tick
+sc_tick_now(void);
+
+#endif

app/src/v4l2_sink.c

@@ -86,7 +86,7 @@ encode_and_write_frame(struct sc_v4l2_sink *vs, const AVFrame *frame) {
         return false;
     }
 
-    AVPacket *packet = &vs->packet;
+    AVPacket *packet = vs->packet;
     ret = avcodec_receive_packet(vs->encoder_ctx, packet);
     if (ret == 0) {
         // A packet was received
@@ -112,7 +112,7 @@ run_v4l2_sink(void *data) {
     for (;;) {
         sc_mutex_lock(&vs->mutex);
 
-        while (!vs->stopped && vs->vb.pending_frame_consumed) {
+        while (!vs->stopped && !vs->has_frame) {
             sc_cond_wait(&vs->cond, &vs->mutex);
         }
 
@@ -121,9 +121,11 @@ run_v4l2_sink(void *data) {
             break;
         }
 
+        vs->has_frame = false;
         sc_mutex_unlock(&vs->mutex);
 
-        video_buffer_consume(&vs->vb, vs->frame);
+        sc_video_buffer_consume(&vs->vb, vs->frame);
+
         bool ok = encode_and_write_frame(vs, vs->frame);
         av_frame_unref(vs->frame);
         if (!ok) {
@@ -137,17 +139,42 @@ run_v4l2_sink(void *data) {
     return 0;
 }
 
+static void
+sc_video_buffer_on_new_frame(struct sc_video_buffer *vb, bool previous_skipped,
+                             void *userdata) {
+    (void) vb;
+    struct sc_v4l2_sink *vs = userdata;
+
+    if (!previous_skipped) {
+        sc_mutex_lock(&vs->mutex);
+        vs->has_frame = true;
+        sc_cond_signal(&vs->cond);
+        sc_mutex_unlock(&vs->mutex);
+    }
+}
+
 static bool
 sc_v4l2_sink_open(struct sc_v4l2_sink *vs) {
-    bool ok = video_buffer_init(&vs->vb);
+    static const struct sc_video_buffer_callbacks cbs = {
+        .on_new_frame = sc_video_buffer_on_new_frame,
+    };
+
+    bool ok = sc_video_buffer_init(&vs->vb, vs->buffering_time, &cbs, vs);
     if (!ok) {
+        LOGE("Could not initialize video buffer");
         return false;
     }
 
+    ok = sc_video_buffer_start(&vs->vb);
+    if (!ok) {
+        LOGE("Could not start video buffer");
+        goto error_video_buffer_destroy;
+    }
+
     ok = sc_mutex_init(&vs->mutex);
     if (!ok) {
         LOGC("Could not create mutex");
-        goto error_video_buffer_destroy;
+        goto error_video_buffer_stop_and_join;
     }
 
     ok = sc_cond_init(&vs->cond);
@@ -180,12 +207,17 @@ sc_v4l2_sink_open(struct sc_v4l2_sink *vs) {
     // still expects a pointer-to-non-const (it has not be updated accordingly)
     // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
     vs->format_ctx->oformat = (AVOutputFormat *) format;
+#ifdef SCRCPY_LAVF_HAS_AVFORMATCONTEXT_URL
     vs->format_ctx->url = strdup(vs->device_name);
     if (!vs->format_ctx->url) {
         LOGE("Could not strdup v4l2 device name");
         goto error_avformat_free_context;
         return false;
     }
+#else
+    strncpy(vs->format_ctx->filename, vs->device_name,
+            sizeof(vs->format_ctx->filename));
+#endif
 
     AVStream *ostream = avformat_new_stream(vs->format_ctx, encoder);
     if (!ostream) {
@@ -230,20 +262,29 @@ sc_v4l2_sink_open(struct sc_v4l2_sink *vs) {
         goto error_avcodec_close;
     }
 
+    vs->packet = av_packet_alloc();
+    if (!vs->packet) {
+        LOGE("Could not allocate packet");
+        goto error_av_frame_free;
+    }
+
+    vs->has_frame = false;
+    vs->header_written = false;
+    vs->stopped = false;
+
     LOGD("Starting v4l2 thread");
     ok = sc_thread_create(&vs->thread, run_v4l2_sink, "v4l2", vs);
     if (!ok) {
         LOGC("Could not start v4l2 thread");
-        goto error_av_frame_free;
+        goto error_av_packet_free;
     }
 
-    vs->header_written = false;
-    vs->stopped = false;
-
     LOGI("v4l2 sink started to device: %s", vs->device_name);
 
     return true;
 
+error_av_packet_free:
+    av_packet_free(&vs->packet);
 error_av_frame_free:
     av_frame_free(&vs->frame);
 error_avcodec_close:
@@ -258,8 +299,11 @@ error_cond_destroy:
     sc_cond_destroy(&vs->cond);
 error_mutex_destroy:
     sc_mutex_destroy(&vs->mutex);
+error_video_buffer_stop_and_join:
+    sc_video_buffer_stop(&vs->vb);
+    sc_video_buffer_join(&vs->vb);
 error_video_buffer_destroy:
-    video_buffer_destroy(&vs->vb);
+    sc_video_buffer_destroy(&vs->vb);
 
     return false;
 }
@@ -271,8 +315,12 @@ sc_v4l2_sink_close(struct sc_v4l2_sink *vs) {
     sc_cond_signal(&vs->cond);
     sc_mutex_unlock(&vs->mutex);
 
-    sc_thread_join(&vs->thread, NULL);
+    sc_video_buffer_stop(&vs->vb);
 
+    sc_thread_join(&vs->thread, NULL);
+    sc_video_buffer_join(&vs->vb);
+
+    av_packet_free(&vs->packet);
     av_frame_free(&vs->frame);
     avcodec_close(vs->encoder_ctx);
     avcodec_free_context(&vs->encoder_ctx);
@@ -280,20 +328,12 @@ sc_v4l2_sink_close(struct sc_v4l2_sink *vs) {
     avformat_free_context(vs->format_ctx);
     sc_cond_destroy(&vs->cond);
     sc_mutex_destroy(&vs->mutex);
-    video_buffer_destroy(&vs->vb);
+    sc_video_buffer_destroy(&vs->vb);
 }
 
 static bool
 sc_v4l2_sink_push(struct sc_v4l2_sink *vs, const AVFrame *frame) {
-    bool ok = video_buffer_push(&vs->vb, frame, NULL);
+    return sc_video_buffer_push(&vs->vb, frame);
-    if (!ok) {
-        return false;
-    }
-
-    // signal possible change of vs->vb.pending_frame_consumed
-    sc_cond_signal(&vs->cond);
-
-    return true;
 }
 
 static bool
@@ -316,7 +356,7 @@ sc_v4l2_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
 
 bool
 sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
-                  struct size frame_size) {
+                  struct size frame_size, sc_tick buffering_time) {
     vs->device_name = strdup(device_name);
     if (!vs->device_name) {
         LOGE("Could not strdup v4l2 device name");
@@ -324,6 +364,7 @@ sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
     }
 
     vs->frame_size = frame_size;
+    vs->buffering_time = buffering_time;
 
     static const struct sc_frame_sink_ops ops = {
         .open = sc_v4l2_frame_sink_open,

app/src/v4l2_sink.h

@@ -6,32 +6,35 @@
 #include "coords.h"
 #include "trait/frame_sink.h"
 #include "video_buffer.h"
+#include "util/tick.h"
 
 #include <libavformat/avformat.h>
 
 struct sc_v4l2_sink {
     struct sc_frame_sink frame_sink; // frame sink trait
 
-    struct video_buffer vb;
+    struct sc_video_buffer vb;
     AVFormatContext *format_ctx;
     AVCodecContext *encoder_ctx;
 
     char *device_name;
     struct size frame_size;
+    sc_tick buffering_time;
 
     sc_thread thread;
     sc_mutex mutex;
     sc_cond cond;
+    bool has_frame;
     bool stopped;
     bool header_written;
 
     AVFrame *frame;
-    AVPacket packet;
+    AVPacket *packet;
 };
 
 bool
 sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
-                  struct size frame_size);
+                  struct size frame_size, sc_tick buffering_time);
 
 void
 sc_v4l2_sink_destroy(struct sc_v4l2_sink *vs);

app/src/video_buffer.c

@@ -1,88 +1,255 @@
 #include "video_buffer.h"
 
 #include <assert.h>
+#include <stdlib.h>
+
 #include <libavutil/avutil.h>
 #include <libavformat/avformat.h>
 
 #include "util/log.h"
 
-bool
+#define SC_BUFFERING_NDEBUG // comment to debug
-video_buffer_init(struct video_buffer *vb) {
+
-    vb->pending_frame = av_frame_alloc();
+static struct sc_video_buffer_frame *
-    if (!vb->pending_frame) {
+sc_video_buffer_frame_new(const AVFrame *frame) {
-        return false;
+    struct sc_video_buffer_frame *vb_frame = malloc(sizeof(*vb_frame));
+    if (!vb_frame) {
+        return NULL;
     }
 
-    vb->tmp_frame = av_frame_alloc();
+    vb_frame->frame = av_frame_alloc();
-    if (!vb->tmp_frame) {
+    if (!vb_frame->frame) {
-        av_frame_free(&vb->pending_frame);
+        free(vb_frame);
-        return false;
+        return NULL;
     }
 
-    bool ok = sc_mutex_init(&vb->mutex);
+    if (av_frame_ref(vb_frame->frame, frame)) {
+        av_frame_free(&vb_frame->frame);
+        free(vb_frame);
+        return NULL;
+    }
+
+    return vb_frame;
+}
+
+static void
+sc_video_buffer_frame_delete(struct sc_video_buffer_frame *vb_frame) {
+    av_frame_unref(vb_frame->frame);
+    av_frame_free(&vb_frame->frame);
+    free(vb_frame);
+}
+
+static bool
+sc_video_buffer_offer(struct sc_video_buffer *vb, const AVFrame *frame) {
+    bool previous_skipped;
+    bool ok = sc_frame_buffer_push(&vb->fb, frame, &previous_skipped);
     if (!ok) {
-        av_frame_free(&vb->pending_frame);
-        av_frame_free(&vb->tmp_frame);
         return false;
     }
 
-    // there is initially no frame, so consider it has already been consumed
+    vb->cbs->on_new_frame(vb, previous_skipped, vb->cbs_userdata);
-    vb->pending_frame_consumed = true;
-
     return true;
 }
 
-void
+static int
-video_buffer_destroy(struct video_buffer *vb) {
+run_buffering(void *data) {
-    sc_mutex_destroy(&vb->mutex);
+    struct sc_video_buffer *vb = data;
-    av_frame_free(&vb->pending_frame);
-    av_frame_free(&vb->tmp_frame);
-}
 
-static inline void
+    assert(vb->buffering_time > 0);
-swap_frames(AVFrame **lhs, AVFrame **rhs) {
+
-    AVFrame *tmp = *lhs;
+    for (;;) {
-    *lhs = *rhs;
+        sc_mutex_lock(&vb->b.mutex);
-    *rhs = tmp;
+
+        while (!vb->b.stopped && sc_queue_is_empty(&vb->b.queue)) {
+            sc_cond_wait(&vb->b.queue_cond, &vb->b.mutex);
+        }
+
+        if (vb->b.stopped) {
+            sc_mutex_unlock(&vb->b.mutex);
+            goto stopped;
+        }
+
+        struct sc_video_buffer_frame *vb_frame;
+        sc_queue_take(&vb->b.queue, next, &vb_frame);
+
+        sc_tick max_deadline = sc_tick_now() + vb->buffering_time;
+        // PTS (written by the server) are expressed in microseconds
+        sc_tick pts = SC_TICK_TO_US(vb_frame->frame->pts);
+
+        bool timed_out = false;
+        while (!vb->b.stopped && !timed_out) {
+            sc_tick deadline = sc_clock_to_system_time(&vb->b.clock, pts)
+                             + vb->buffering_time;
+            if (deadline > max_deadline) {
+                deadline = max_deadline;
+            }
+
+            timed_out =
+                !sc_cond_timedwait(&vb->b.wait_cond, &vb->b.mutex, deadline);
+        }
+
+        if (vb->b.stopped) {
+            sc_video_buffer_frame_delete(vb_frame);
+            sc_mutex_unlock(&vb->b.mutex);
+            goto stopped;
+        }
+
+        sc_mutex_unlock(&vb->b.mutex);
+
+#ifndef SC_BUFFERING_NDEBUG
+        LOGD("Buffering: %" PRItick ";%" PRItick ";%" PRItick,
+             pts, vb_frame->push_date, sc_tick_now());
+#endif
+
+        sc_video_buffer_offer(vb, vb_frame->frame);
+
+        sc_video_buffer_frame_delete(vb_frame);
+    }
+
+stopped:
+    // Flush queue
+    while (!sc_queue_is_empty(&vb->b.queue)) {
+        struct sc_video_buffer_frame *vb_frame;
+        sc_queue_take(&vb->b.queue, next, &vb_frame);
+        sc_video_buffer_frame_delete(vb_frame);
+    }
+
+    LOGD("Buffering thread ended");
+
+    return 0;
 }
 
 bool
-video_buffer_push(struct video_buffer *vb, const AVFrame *frame,
+sc_video_buffer_init(struct sc_video_buffer *vb, sc_tick buffering_time,
-                  bool *previous_frame_skipped) {
+                     const struct sc_video_buffer_callbacks *cbs,
-    sc_mutex_lock(&vb->mutex);
+                     void *cbs_userdata) {
-
+    bool ok = sc_frame_buffer_init(&vb->fb);
-    // Use a temporary frame to preserve pending_frame in case of error.
+    if (!ok) {
-    // tmp_frame is an empty frame, no need to call av_frame_unref() beforehand.
-    int r = av_frame_ref(vb->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
+    assert(buffering_time >= 0);
-    // pending_frame
+    if (buffering_time) {
-    swap_frames(&vb->pending_frame, &vb->tmp_frame);
+        ok = sc_mutex_init(&vb->b.mutex);
-    av_frame_unref(vb->tmp_frame);
+        if (!ok) {
+            LOGC("Could not create mutex");
+            sc_frame_buffer_destroy(&vb->fb);
+            return false;
+        }
 
-    if (previous_frame_skipped) {
+        ok = sc_cond_init(&vb->b.queue_cond);
-        *previous_frame_skipped = !vb->pending_frame_consumed;
+        if (!ok) {
+            LOGC("Could not create cond");
+            sc_mutex_destroy(&vb->b.mutex);
+            sc_frame_buffer_destroy(&vb->fb);
+            return false;
+        }
+
+        ok = sc_cond_init(&vb->b.wait_cond);
+        if (!ok) {
+            LOGC("Could not create wait cond");
+            sc_cond_destroy(&vb->b.queue_cond);
+            sc_mutex_destroy(&vb->b.mutex);
+            sc_frame_buffer_destroy(&vb->fb);
+            return false;
+        }
+
+        sc_clock_init(&vb->b.clock);
+        sc_queue_init(&vb->b.queue);
     }
-    vb->pending_frame_consumed = false;
 
-    sc_mutex_unlock(&vb->mutex);
+    assert(cbs);
+    assert(cbs->on_new_frame);
+
+    vb->buffering_time = buffering_time;
+    vb->cbs = cbs;
+    vb->cbs_userdata = cbs_userdata;
+    return true;
+}
+
+bool
+sc_video_buffer_start(struct sc_video_buffer *vb) {
+    if (vb->buffering_time) {
+        bool ok =
+            sc_thread_create(&vb->b.thread, run_buffering, "buffering", vb);
+        if (!ok) {
+            LOGE("Could not start buffering thread");
+            return false;
+        }
+    }
 
     return true;
 }
 
 void
-video_buffer_consume(struct video_buffer *vb, AVFrame *dst) {
+sc_video_buffer_stop(struct sc_video_buffer *vb) {
-    sc_mutex_lock(&vb->mutex);
+    if (vb->buffering_time) {
-    assert(!vb->pending_frame_consumed);
+        sc_mutex_lock(&vb->b.mutex);
-    vb->pending_frame_consumed = true;
+        vb->b.stopped = true;
-
+        sc_cond_signal(&vb->b.queue_cond);
-    av_frame_move_ref(dst, vb->pending_frame);
+        sc_cond_signal(&vb->b.wait_cond);
-    // av_frame_move_ref() resets its source frame, so no need to call
+        sc_mutex_unlock(&vb->b.mutex);
-    // av_frame_unref()
+    }
-
+}
-    sc_mutex_unlock(&vb->mutex);
+
+void
+sc_video_buffer_join(struct sc_video_buffer *vb) {
+    if (vb->buffering_time) {
+        sc_thread_join(&vb->b.thread, NULL);
+    }
+}
+
+void
+sc_video_buffer_destroy(struct sc_video_buffer *vb) {
+    sc_frame_buffer_destroy(&vb->fb);
+    if (vb->buffering_time) {
+        sc_cond_destroy(&vb->b.wait_cond);
+        sc_cond_destroy(&vb->b.queue_cond);
+        sc_mutex_destroy(&vb->b.mutex);
+    }
+}
+
+bool
+sc_video_buffer_push(struct sc_video_buffer *vb, const AVFrame *frame) {
+    if (!vb->buffering_time) {
+        // No buffering
+        return sc_video_buffer_offer(vb, frame);
+    }
+
+    sc_mutex_lock(&vb->b.mutex);
+
+    sc_tick pts = SC_TICK_FROM_US(frame->pts);
+    sc_clock_update(&vb->b.clock, sc_tick_now(), pts);
+    sc_cond_signal(&vb->b.wait_cond);
+
+    if (vb->b.clock.count == 1) {
+        sc_mutex_unlock(&vb->b.mutex);
+        // First frame, offer it immediately, for two reasons:
+        //  - not to delay the opening of the scrcpy window
+        //  - the buffering estimation needs at least two clock points, so it
+        //  could not handle the first frame
+        return sc_video_buffer_offer(vb, frame);
+    }
+
+    struct sc_video_buffer_frame *vb_frame = sc_video_buffer_frame_new(frame);
+    if (!vb_frame) {
+        sc_mutex_unlock(&vb->b.mutex);
+        LOGE("Could not allocate frame");
+        return false;
+    }
+
+#ifndef SC_BUFFERING_NDEBUG
+    vb_frame->push_date = sc_tick_now();
+#endif
+    sc_queue_push(&vb->b.queue, next, vb_frame);
+    sc_cond_signal(&vb->b.queue_cond);
+
+    sc_mutex_unlock(&vb->b.mutex);
+
+    return true;
+}
+
+void
+sc_video_buffer_consume(struct sc_video_buffer *vb, AVFrame *dst) {
+    sc_frame_buffer_consume(&vb->fb, dst);
 }

app/src/video_buffer.h

@@ -1,50 +1,76 @@
-#ifndef VIDEO_BUFFER_H
+#ifndef SC_VIDEO_BUFFER_H
-#define VIDEO_BUFFER_H
+#define SC_VIDEO_BUFFER_H
 
 #include "common.h"
 
 #include <stdbool.h>
 
-#include "fps_counter.h"
+#include "clock.h"
+#include "frame_buffer.h"
+#include "util/queue.h"
 #include "util/thread.h"
+#include "util/tick.h"
 
 // forward declarations
 typedef struct AVFrame AVFrame;
 
-/**
+struct sc_video_buffer_frame {
- * A video buffer holds 1 pending frame, which is the last frame received from
+    AVFrame *frame;
- * the producer (typically, the decoder).
+    struct sc_video_buffer_frame *next;
- *
+#ifndef NDEBUG
- * If a pending frame has not been consumed when the producer pushes a new
+    sc_tick push_date;
- * frame, then it is lost. The intent is to always provide access to the very
+#endif
- * last frame to minimize latency.
+};
- *
- * The producer and the consumer typically do not live in the same thread.
- * That's the reason why the callback on_frame_available() does not provide the
- * frame as parameter: the consumer might post an event to its own thread to
- * retrieve the pending frame from there, and that frame may have changed since
- * the callback if producer pushed a new one in between.
- */
 
-struct video_buffer {
+struct sc_video_buffer_frame_queue SC_QUEUE(struct sc_video_buffer_frame);
-    AVFrame *pending_frame;
-    AVFrame *tmp_frame; // To preserve the pending frame on error
 
-    sc_mutex mutex;
+struct sc_video_buffer {
+    struct sc_frame_buffer fb;
 
-    bool pending_frame_consumed;
+    sc_tick buffering_time;
+
+    // only if buffering_ms > 0
+    struct {
+        sc_thread thread;
+        sc_mutex mutex;
+        sc_cond queue_cond;
+        sc_cond wait_cond;
+
+        struct sc_clock clock;
+        struct sc_video_buffer_frame_queue queue;
+        bool stopped;
+    } b; // buffering
+
+    const struct sc_video_buffer_callbacks *cbs;
+    void *cbs_userdata;
+};
+
+struct sc_video_buffer_callbacks {
+    void (*on_new_frame)(struct sc_video_buffer *vb, bool previous_skipped,
+                         void *userdata);
 };
 
 bool
-video_buffer_init(struct video_buffer *vb);
+sc_video_buffer_init(struct sc_video_buffer *vb, sc_tick buffering_time,
-
+                     const struct sc_video_buffer_callbacks *cbs,
-void
+                     void *cbs_userdata);
-video_buffer_destroy(struct video_buffer *vb);
 
 bool
-video_buffer_push(struct video_buffer *vb, const AVFrame *frame, bool *skipped);
+sc_video_buffer_start(struct sc_video_buffer *vb);
 
 void
-video_buffer_consume(struct video_buffer *vb, AVFrame *dst);
+sc_video_buffer_stop(struct sc_video_buffer *vb);
+
+void
+sc_video_buffer_join(struct sc_video_buffer *vb);
+
+void
+sc_video_buffer_destroy(struct sc_video_buffer *vb);
+
+bool
+sc_video_buffer_push(struct sc_video_buffer *vb, const AVFrame *frame);
+
+void
+sc_video_buffer_consume(struct sc_video_buffer *vb, AVFrame *dst);
 
 #endif

app/tests/test_cli.c

@@ -51,7 +51,7 @@ static void test_options(void) {
         "--fullscreen",
         "--max-fps", "30",
         "--max-size", "1024",
-        "--lock-video-orientation", "2",
+        "--lock-video-orientation=2", // optional arguments require '='
         // "--no-control" is not compatible with "--turn-screen-off"
         // "--no-display" is not compatible with "--fulscreen"
         "--port", "1234:1236",

app/tests/test_clock.c

@@ -0,0 +1,79 @@
+#include "common.h"
+
+#include <assert.h>
+
+#include "clock.h"
+
+void test_small_rolling_sum(void) {
+    struct sc_clock clock;
+    sc_clock_init(&clock);
+
+    assert(clock.count == 0);
+    assert(clock.left_sum.system == 0);
+    assert(clock.left_sum.stream == 0);
+    assert(clock.right_sum.system == 0);
+    assert(clock.right_sum.stream == 0);
+
+    sc_clock_update(&clock, 2, 3);
+    assert(clock.count == 1);
+    assert(clock.left_sum.system == 0);
+    assert(clock.left_sum.stream == 0);
+    assert(clock.right_sum.system == 2);
+    assert(clock.right_sum.stream == 3);
+
+    sc_clock_update(&clock, 10, 20);
+    assert(clock.count == 2);
+    assert(clock.left_sum.system == 2);
+    assert(clock.left_sum.stream == 3);
+    assert(clock.right_sum.system == 10);
+    assert(clock.right_sum.stream == 20);
+
+    sc_clock_update(&clock, 40, 80);
+    assert(clock.count == 3);
+    assert(clock.left_sum.system == 2);
+    assert(clock.left_sum.stream == 3);
+    assert(clock.right_sum.system == 50);
+    assert(clock.right_sum.stream == 100);
+
+    sc_clock_update(&clock, 400, 800);
+    assert(clock.count == 4);
+    assert(clock.left_sum.system == 12);
+    assert(clock.left_sum.stream == 23);
+    assert(clock.right_sum.system == 440);
+    assert(clock.right_sum.stream == 880);
+}
+
+void test_large_rolling_sum(void) {
+    const unsigned half_range = SC_CLOCK_RANGE / 2;
+
+    struct sc_clock clock1;
+    sc_clock_init(&clock1);
+    for (unsigned i = 0; i < 5 * half_range; ++i) {
+        sc_clock_update(&clock1, i, 2 * i + 1);
+    }
+
+    struct sc_clock clock2;
+    sc_clock_init(&clock2);
+    for (unsigned i = 3 * half_range; i < 5 * half_range; ++i) {
+        sc_clock_update(&clock2, i, 2 * i + 1);
+    }
+
+    assert(clock1.count == SC_CLOCK_RANGE);
+    assert(clock2.count == SC_CLOCK_RANGE);
+
+    // The values before the last SC_CLOCK_RANGE points in clock1 should have
+    // no impact
+    assert(clock1.left_sum.system == clock2.left_sum.system);
+    assert(clock1.left_sum.stream == clock2.left_sum.stream);
+    assert(clock1.right_sum.system == clock2.right_sum.system);
+    assert(clock1.right_sum.stream == clock2.right_sum.stream);
+}
+
+int main(int argc, char *argv[]) {
+    (void) argc;
+    (void) argv;
+
+    test_small_rolling_sum();
+    test_large_rolling_sum();
+    return 0;
+};

app/tests/test_queue.c

@@ -10,28 +10,28 @@ struct foo {
 };
 
 static void test_queue(void) {
-    struct my_queue QUEUE(struct foo) queue;
+    struct my_queue SC_QUEUE(struct foo) queue;
-    queue_init(&queue);
+    sc_queue_init(&queue);
 
-    assert(queue_is_empty(&queue));
+    assert(sc_queue_is_empty(&queue));
 
     struct foo v1 = { .value = 42 };
     struct foo v2 = { .value = 27 };
 
-    queue_push(&queue, next, &v1);
+    sc_queue_push(&queue, next, &v1);
-    queue_push(&queue, next, &v2);
+    sc_queue_push(&queue, next, &v2);
 
     struct foo *foo;
 
-    assert(!queue_is_empty(&queue));
+    assert(!sc_queue_is_empty(&queue));
-    queue_take(&queue, next, &foo);
+    sc_queue_take(&queue, next, &foo);
     assert(foo->value == 42);
 
-    assert(!queue_is_empty(&queue));
+    assert(!sc_queue_is_empty(&queue));
-    queue_take(&queue, next, &foo);
+    sc_queue_take(&queue, next, &foo);
     assert(foo->value == 27);
 
-    assert(queue_is_empty(&queue));
+    assert(sc_queue_is_empty(&queue));
 }
 
 int main(int argc, char *argv[]) {

install_release.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -e
+
+BUILDDIR=build-auto
+PREBUILT_SERVER_URL=https://github.com/Genymobile/scrcpy/releases/download/v1.18/scrcpy-server-v1.18
+PREBUILT_SERVER_SHA256=641c5c6beda9399dfae72d116f5ff43b5ed1059d871c9ebc3f47610fd33c51a3
+
+echo "[scrcpy] Downloading prebuilt server..."
+wget "$PREBUILT_SERVER_URL" -O scrcpy-server
+echo "[scrcpy] Verifying prebuilt server..."
+echo "$PREBUILT_SERVER_SHA256  scrcpy-server" | sha256sum --check
+
+echo "[scrcpy] Building client..."
+rm -rf "$BUILDDIR"
+meson "$BUILDDIR" --buildtype release --strip -Db_lto=true \
+    -Dprebuilt_server=scrcpy-server
+cd "$BUILDDIR"
+ninja
+
+echo "[scrcpy] Installing (sudo)..."
+sudo ninja install

meson.build

@@ -1,5 +1,5 @@
 project('scrcpy', 'c',
-        version: '1.17',
+        version: '1.18',
         meson_version: '>= 0.48',
         default_options: [
             'c_std=c11',

prebuilt-deps/Makefile

@@ -35,6 +35,6 @@ prepare-sdl2:
 		SDL2-2.0.14
 
 prepare-adb:
-	@./prepare-dep https://dl.google.com/android/repository/platform-tools_r30.0.5-windows.zip \
+	@./prepare-dep https://dl.google.com/android/repository/platform-tools_r31.0.2-windows.zip \
-		549ba2bdc31f335eb8a504f005f77606a479cc216d6b64a3e8b64c780003661f \
+		d560cb8ded83ae04763b94632673481f14843a5969256569623cfeac82db4ba5 \
 		platform-tools

server/build.gradle

@@ -6,8 +6,8 @@ android {
         applicationId "com.genymobile.scrcpy"
         minSdkVersion 21
         targetSdkVersion 30
-        versionCode 20
+        versionCode 11800
-        versionName "1.17"
+        versionName "1.18"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {

server/build_without_gradle.sh

@@ -12,7 +12,7 @@
 set -e
 
 SCRCPY_DEBUG=false
-SCRCPY_VERSION_NAME=1.17
+SCRCPY_VERSION_NAME=1.18
 
 PLATFORM=${ANDROID_PLATFORM:-30}
 BUILD_TOOLS=${ANDROID_BUILD_TOOLS:-30.0.0}

server/src/main/java/com/genymobile/scrcpy/CleanUp.java

@@ -3,6 +3,10 @@ package com.genymobile.scrcpy;
 import com.genymobile.scrcpy.wrappers.ContentProvider;
 import com.genymobile.scrcpy.wrappers.ServiceManager;
 
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.Base64;
+
 import java.io.File;
 import java.io.IOException;
 
@@ -15,25 +19,123 @@ public final class CleanUp {
 
     public static final String SERVER_PATH = "/data/local/tmp/scrcpy-server.jar";
 
+    // A simple struct to be passed from the main process to the cleanup process
+    public static class Config implements Parcelable {
+
+        public static final Creator<Config> CREATOR = new Creator<Config>() {
+            @Override
+            public Config createFromParcel(Parcel in) {
+                return new Config(in);
+            }
+
+            @Override
+            public Config[] newArray(int size) {
+                return new Config[size];
+            }
+        };
+
+        private static final int FLAG_DISABLE_SHOW_TOUCHES = 1;
+        private static final int FLAG_RESTORE_NORMAL_POWER_MODE = 2;
+        private static final int FLAG_POWER_OFF_SCREEN = 4;
+
+        private int displayId;
+
+        // Restore the value (between 0 and 7), -1 to not restore
+        // <https://developer.android.com/reference/android/provider/Settings.Global#STAY_ON_WHILE_PLUGGED_IN>
+        private int restoreStayOn = -1;
+
+        private boolean disableShowTouches;
+        private boolean restoreNormalPowerMode;
+        private boolean powerOffScreen;
+
+        public Config() {
+            // Default constructor, the fields are initialized by CleanUp.configure()
+        }
+
+        protected Config(Parcel in) {
+            displayId = in.readInt();
+            restoreStayOn = in.readInt();
+            byte options = in.readByte();
+            disableShowTouches = (options & FLAG_DISABLE_SHOW_TOUCHES) != 0;
+            restoreNormalPowerMode = (options & FLAG_RESTORE_NORMAL_POWER_MODE) != 0;
+            powerOffScreen = (options & FLAG_POWER_OFF_SCREEN) != 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            dest.writeInt(displayId);
+            dest.writeInt(restoreStayOn);
+            byte options = 0;
+            if (disableShowTouches) {
+                options |= FLAG_DISABLE_SHOW_TOUCHES;
+            }
+            if (restoreNormalPowerMode) {
+                options |= FLAG_RESTORE_NORMAL_POWER_MODE;
+            }
+            if (powerOffScreen) {
+                options |= FLAG_POWER_OFF_SCREEN;
+            }
+            dest.writeByte(options);
+        }
+
+        private boolean hasWork() {
+            return disableShowTouches || restoreStayOn != -1 || restoreNormalPowerMode || powerOffScreen;
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        byte[] serialize() {
+            Parcel parcel = Parcel.obtain();
+            writeToParcel(parcel, 0);
+            byte[] bytes = parcel.marshall();
+            parcel.recycle();
+            return bytes;
+        }
+
+        static Config deserialize(byte[] bytes) {
+            Parcel parcel = Parcel.obtain();
+            parcel.unmarshall(bytes, 0, bytes.length);
+            parcel.setDataPosition(0);
+            return CREATOR.createFromParcel(parcel);
+        }
+
+        static Config fromBase64(String base64) {
+            byte[] bytes = Base64.decode(base64, Base64.NO_WRAP);
+            return deserialize(bytes);
+        }
+
+        String toBase64() {
+            byte[] bytes = serialize();
+            return Base64.encodeToString(bytes, Base64.NO_WRAP);
+        }
+    }
+
     private CleanUp() {
         // not instantiable
     }
 
-    public static void configure(boolean disableShowTouches, int restoreStayOn, boolean restoreNormalPowerMode, boolean powerOffScreen, int displayId)
+    public static void configure(int displayId, int restoreStayOn, boolean disableShowTouches, boolean restoreNormalPowerMode, boolean powerOffScreen)
             throws IOException {
-        boolean needProcess = disableShowTouches || restoreStayOn != -1 || restoreNormalPowerMode || powerOffScreen;
+        Config config = new Config();
-        if (needProcess) {
+        config.displayId = displayId;
-            startProcess(disableShowTouches, restoreStayOn, restoreNormalPowerMode, powerOffScreen, displayId);
+        config.disableShowTouches = disableShowTouches;
+        config.restoreStayOn = restoreStayOn;
+        config.restoreNormalPowerMode = restoreNormalPowerMode;
+        config.powerOffScreen = powerOffScreen;
+
+        if (config.hasWork()) {
+            startProcess(config);
         } else {
             // There is no additional clean up to do when scrcpy dies
             unlinkSelf();
         }
     }
 
-    private static void startProcess(boolean disableShowTouches, int restoreStayOn, boolean restoreNormalPowerMode, boolean powerOffScreen,
+    private static void startProcess(Config config) throws IOException {
-            int displayId) throws IOException {
+        String[] cmd = {"app_process", "/", CleanUp.class.getName(), config.toBase64()};
-        String[] cmd = {"app_process", "/", CleanUp.class.getName(), String.valueOf(disableShowTouches), String.valueOf(
-                restoreStayOn), String.valueOf(restoreNormalPowerMode), String.valueOf(powerOffScreen), String.valueOf(displayId)};
 
         ProcessBuilder builder = new ProcessBuilder(cmd);
         builder.environment().put("CLASSPATH", SERVER_PATH);
@@ -60,31 +162,27 @@ public final class CleanUp {
 
         Ln.i("Cleaning up");
 
-        boolean disableShowTouches = Boolean.parseBoolean(args[0]);
+        Config config = Config.fromBase64(args[0]);
-        int restoreStayOn = Integer.parseInt(args[1]);
-        boolean restoreNormalPowerMode = Boolean.parseBoolean(args[2]);
-        boolean powerOffScreen = Boolean.parseBoolean(args[3]);
-        int displayId = Integer.parseInt(args[4]);
 
-        if (disableShowTouches || restoreStayOn != -1) {
+        if (config.disableShowTouches || config.restoreStayOn != -1) {
             ServiceManager serviceManager = new ServiceManager();
             try (ContentProvider settings = serviceManager.getActivityManager().createSettingsProvider()) {
-                if (disableShowTouches) {
+                if (config.disableShowTouches) {
                     Ln.i("Disabling \"show touches\"");
                     settings.putValue(ContentProvider.TABLE_SYSTEM, "show_touches", "0");
                 }
-                if (restoreStayOn != -1) {
+                if (config.restoreStayOn != -1) {
                     Ln.i("Restoring \"stay awake\"");
-                    settings.putValue(ContentProvider.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(restoreStayOn));
+                    settings.putValue(ContentProvider.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(config.restoreStayOn));
                 }
             }
         }
 
         if (Device.isScreenOn()) {
-            if (powerOffScreen) {
+            if (config.powerOffScreen) {
                 Ln.i("Power off screen");
-                Device.powerOffScreen(displayId);
+                Device.powerOffScreen(config.displayId);
-            } else if (restoreNormalPowerMode) {
+            } else if (config.restoreNormalPowerMode) {
                 Ln.i("Restoring normal power mode");
                 Device.setScreenPowerMode(Device.POWER_MODE_NORMAL);
             }

server/src/main/java/com/genymobile/scrcpy/Ln.java

@@ -12,7 +12,7 @@ public final class Ln {
     private static final String PREFIX = "[server] ";
 
     enum Level {
-        DEBUG, INFO, WARN, ERROR
+        VERBOSE, DEBUG, INFO, WARN, ERROR
     }
 
     private static Level threshold = Level.INFO;
@@ -36,6 +36,13 @@ public final class Ln {
         return level.ordinal() >= threshold.ordinal();
     }
 
+    public static void v(String message) {
+        if (isEnabled(Level.VERBOSE)) {
+            Log.v(TAG, message);
+            System.out.println(PREFIX + "VERBOSE: " + message);
+        }
+    }
+
     public static void d(String message) {
         if (isEnabled(Level.DEBUG)) {
             Log.d(TAG, message);

server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java

@@ -7,6 +7,7 @@ import android.media.MediaCodec;
 import android.media.MediaCodecInfo;
 import android.media.MediaCodecList;
 import android.media.MediaFormat;
+import android.os.Build;
 import android.os.IBinder;
 import android.view.Surface;
 
@@ -225,7 +226,11 @@ public class ScreenEncoder implements Device.RotationListener {
     }
 
     private static IBinder createDisplay() {
-        return SurfaceControl.createDisplay("scrcpy", true);
+        // Since Android 12 (preview), secure displays could not be created with shell permissions anymore.
+        // On Android 12 preview, SDK_INT is still R (not S), but CODENAME is "S".
+        boolean secure = Build.VERSION.SDK_INT < Build.VERSION_CODES.R || (Build.VERSION.SDK_INT == Build.VERSION_CODES.R && !"S"
+                .equals(Build.VERSION.CODENAME));
+        return SurfaceControl.createDisplay("scrcpy", secure);
     }
 
     private static void configure(MediaCodec codec, MediaFormat format) {

server/src/main/java/com/genymobile/scrcpy/Server.java

@@ -50,7 +50,7 @@ public final class Server {
             }
         }
 
-        CleanUp.configure(mustDisableShowTouchesOnCleanUp, restoreStayOn, true, options.getPowerOffScreenOnClose(), options.getDisplayId());
+        CleanUp.configure(options.getDisplayId(), restoreStayOn, mustDisableShowTouchesOnCleanUp, true, options.getPowerOffScreenOnClose());
 
         boolean tunnelForward = options.isTunnelForward();
 

server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java

@@ -2,6 +2,7 @@ package com.genymobile.scrcpy.wrappers;
 
 import com.genymobile.scrcpy.Ln;
 
+import android.annotation.SuppressLint;
 import android.os.Bundle;
 import android.os.IBinder;
 
@@ -37,6 +38,8 @@ public class ContentProvider implements Closeable {
     private Method callMethod;
     private int callMethodVersion;
 
+    private Object attributionSource;
+
     ContentProvider(ActivityManager manager, Object provider, String name, IBinder token) {
         this.manager = manager;
         this.provider = provider;
@@ -44,36 +47,58 @@ public class ContentProvider implements Closeable {
         this.token = token;
     }
 
+    @SuppressLint("PrivateApi")
     private Method getCallMethod() throws NoSuchMethodException {
         if (callMethod == null) {
-
             try {
-                callMethod = provider.getClass()
+                Class<?> attributionSourceClass = Class.forName("android.content.AttributionSource");
-                        .getMethod("call", String.class, String.class, String.class, String.class, String.class, Bundle.class);
+                callMethod = provider.getClass().getMethod("call", attributionSourceClass, String.class, String.class, String.class, Bundle.class);
                 callMethodVersion = 0;
-            } catch (NoSuchMethodException e) {
+            } catch (NoSuchMethodException | ClassNotFoundException e0) {
                 // old versions
                 try {
-                    callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, String.class, Bundle.class);
+                    callMethod = provider.getClass()
+                            .getMethod("call", String.class, String.class, String.class, String.class, String.class, Bundle.class);
                     callMethodVersion = 1;
-                } catch (NoSuchMethodException e2) {
+                } catch (NoSuchMethodException e1) {
-                    callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, Bundle.class);
+                    try {
-                    callMethodVersion = 2;
+                        callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, String.class, Bundle.class);
+                        callMethodVersion = 2;
+                    } catch (NoSuchMethodException e2) {
+                        callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, Bundle.class);
+                        callMethodVersion = 3;
+                    }
                 }
             }
         }
         return callMethod;
     }
 
+    @SuppressLint("PrivateApi")
+    private Object getAttributionSource()
+            throws ClassNotFoundException, NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
+        if (attributionSource == null) {
+            Class<?> cl = Class.forName("android.content.AttributionSource$Builder");
+            Object builder = cl.getConstructor(int.class).newInstance(ServiceManager.USER_ID);
+            cl.getDeclaredMethod("setPackageName", String.class).invoke(builder, ServiceManager.PACKAGE_NAME);
+            attributionSource = cl.getDeclaredMethod("build").invoke(builder);
+        }
+
+        return attributionSource;
+    }
+
     private Bundle call(String callMethod, String arg, Bundle extras) {
         try {
             Method method = getCallMethod();
             Object[] args;
             switch (callMethodVersion) {
                 case 0:
-                    args = new Object[]{ServiceManager.PACKAGE_NAME, null, "settings", callMethod, arg, extras};
+                    args = new Object[]{getAttributionSource(), "settings", callMethod, arg, extras};
                     break;
                 case 1:
+                    args = new Object[]{ServiceManager.PACKAGE_NAME, null, "settings", callMethod, arg, extras};
+                    break;
+                case 2:
                     args = new Object[]{ServiceManager.PACKAGE_NAME, "settings", callMethod, arg, extras};
                     break;
                 default:
@@ -81,7 +106,7 @@ public class ContentProvider implements Closeable {
                     break;
             }
             return (Bundle) method.invoke(provider, args);
-        } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
+        } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException | ClassNotFoundException | InstantiationException e) {
             Ln.e("Could not invoke method", e);
             return null;
         }