Add intermediate frame in video buffer

There were only two frames simultaneously: - one used by the decoder; - one used by the renderer. When the decoder finished decoding a frame, it swapped it with the rendering frame. Adding a third frame provides several benefits: - the decoder do not have to wait for the renderer to release the mutex; - it simplifies the video_buffer API; - it makes the rendering frame valid until the next call to video_buffer_take_rendering_frame(), which will be useful for swscaling on window resize.
Assert non-recursive usage of mutexes
2021-02-04 08:12:22 +01:00 · 2021-02-04 08:12:22 +01:00 · 2021-02-04 08:12:22 +01:00 · 2021-02-04 08:12:22 +01:00 · 2021-02-04 08:12:22 +01:00 · 2021-02-04 08:12:22 +01:00
70 changed files with 1555 additions and 3716 deletions
--- a/BUILD.md
+++ b/BUILD.md
@ -2,43 +2,11 @@

 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).

-## 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
-```
-
+[prebuilt server]: #prebuilt-server

 ## Branches

@ -91,11 +59,12 @@ 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 libsdl2-dev \
-                 libavcodec-dev libavdevice-dev libavformat-dev libavutil-dev
+sudo apt install gcc git pkg-config meson ninja-build \
+                 libavcodec-dev libavformat-dev libavutil-dev \
+                 libsdl2-dev

 # server build dependencies
-sudo apt install openjdk-11-jdk
+sudo apt install openjdk-8-jdk
 ```

 On old versions (like Ubuntu 16.04), `meson` is too old. In that case, install
@ -137,13 +106,13 @@ sudo apt install mingw-w64 mingw-w64-tools
 You also need the JDK to build the server:

 ```bash
-sudo apt install openjdk-11-jdk
+sudo apt install openjdk-8-jdk
 ```

 Then generate the releases:

 ```bash
-./release.sh
+make -f Makefile.CrossWindows
 ```

 It will generate win32 and win64 releases into `dist/`.
@ -204,12 +173,12 @@ brew install pkg-config meson
 ```

 Additionally, if you want to build the server, install Java 8 from Caskroom, and
-make it available from the `PATH`:
+make it avaliable from the `PATH`:

 ```bash
 brew tap homebrew/cask-versions
-brew install adoptopenjdk/openjdk/adoptopenjdk11
-export JAVA_HOME="$(/usr/libexec/java_home --version 1.11)"
+brew cask install adoptopenjdk/openjdk/adoptopenjdk8
+export JAVA_HOME="$(/usr/libexec/java_home --version 1.8)"
 export PATH="$JAVA_HOME/bin:$PATH"
 ```

@ -220,27 +189,8 @@ See [pierlon/scrcpy-docker](https://github.com/pierlon/scrcpy-docker).

 ## Common steps

-**As a non-root user**, clone the project:
-
-```bash
-git clone https://github.com/Genymobile/scrcpy
-cd scrcpy
-```
-
-
-### Build
-
-You may want to build only the client: the server binary, which will be pushed
-to the Android device, does not depend on your system and architecture. In that
-case, use the [prebuilt server] (so you will not need Java or the Android SDK).
-
-[prebuilt server]: #option-2-use-prebuilt-server
-
-
-#### Option 1: Build everything from sources
-
-Install the [Android SDK] (_Android Studio_), and set `ANDROID_SDK_ROOT` to its
-directory. For example:
+If you want to build the server, 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

@ -253,11 +203,20 @@ 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  # DO NOT RUN AS ROOT
+ninja -Cx
 ```

 _Note: `ninja` [must][ninja-user] be run as a non-root user (only `ninja
@ -266,27 +225,9 @@ install` must be run as root)._
 [ninja-user]: https://github.com/Genymobile/scrcpy/commit/4c49b27e9f6be02b8e63b508b60535426bd0291a


-#### Option 2: Use prebuilt server
+### Run

- - [`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 \
-    -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:
+To run without installing:

 ```bash
 ./run x [options]
@ -301,16 +242,32 @@ After a successful build, you can install _scrcpy_ on the system:
 sudo ninja -Cx install    # without sudo on Windows
 ```

-This installs three files:
+This installs two 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
-sudo ninja -Cx uninstall  # without sudo on Windows
+meson x --buildtype release --strip -Db_lto=true \
+    -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).
--- a/DEVELOP.md
+++ b/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 immediately starts
+rendering frame (with proper synchronization). Thus, it immediatly 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
--- a/FAQ.md
+++ b/FAQ.md
@ -39,11 +39,8 @@ 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


@ -114,6 +111,16 @@ 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
--- a/README.id.md
+++ b/README.id.md
@ -69,7 +69,10 @@ Anda juga bisa [membangun aplikasi secara manual][BUILD] (jangan khawatir, tidak

 Untuk Windows, untuk kesederhanaan, arsip prebuilt dengan semua dependensi (termasuk `adb`) tersedia :

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

 Ini juga tersedia di [Chocolatey]:

--- a/README.jp.md
+++ b/README.jp.md
@ -1,725 +0,0 @@
-_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/
--- a/README.ko.md
+++ b/README.ko.md
@ -68,7 +68,9 @@ 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.
- - [README](README.md#windows)
+ - [`scrcpy-win`][direct-win]
+
+[direct-win]: https://github.com/Genymobile/scrcpy/blob/master/README.md#windows


 [어플을 직접 설치][BUILD] 할 수도 있습니다.
--- a/README.md
+++ b/README.md
@ -38,18 +38,6 @@ 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):
@ -79,8 +67,9 @@ 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] ([simplified
-process][BUILD_simple]).
+You could also [build the app manually][BUILD] (don't worry, it's not that
+hard).
+


 ### Windows
@ -127,18 +116,13 @@ brew install scrcpy
 You need `adb`, accessible from your `PATH`. If you don't have it yet:

 ```bash
-brew install android-platform-tools
+# Homebrew >= 2.6.0
+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].


@ -214,11 +198,10 @@ If `--max-size` is also specified, resizing is applied after cropping.
 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=1   # 90° counterclockwise
-scrcpy --lock-video-orientation=2   # 180°
-scrcpy --lock-video-orientation=3   # 90° clockwise
+scrcpy --lock-video-orientation 0   # natural orientation
+scrcpy --lock-video-orientation 1   # 90° counterclockwise
+scrcpy --lock-video-orientation 2   # 180°
+scrcpy --lock-video-orientation 3   # 90° clockwise
 ```

 This affects recording orientation.
@ -242,9 +225,7 @@ error will give the available encoders:
 scrcpy --encoder _
 ```

-### Capture
-
-#### Recording
+### Recording

 It is possible to record the screen while mirroring:

@ -268,59 +249,6 @@ variation] does not impact the recorded file.
 [packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation


-#### v4l2loopback
-
-On Linux, it is possible to send the video stream to a v4l2 loopback device, so
-that the Android device can be opened like a webcam by any v4l2-capable tool.
-
-The module `v4l2loopback` must be installed:
-
-```bash
-sudo apt install v4l2loopback-dkms
-```
-
-To create a v4l2 device:
-
-```bash
-sudo modprobe v4l2loopback
-```
-
-This will create a new video device in `/dev/videoN`, where `N` is an integer
-(more [options](https://github.com/umlaeute/v4l2loopback#options) are available
-to create several devices or devices with specific IDs).
-
-To list the enabled devices:
-
-```bash
-# requires v4l-utils package
-v4l2-ctl --list-devices
-
-# simple but might be sufficient
-ls /dev/video*
-```
-
-To start scrcpy using a v4l2 sink:
-
-```bash
-scrcpy --v4l2-sink=/dev/videoN
-scrcpy --v4l2-sink=/dev/videoN --no-display  # disable mirroring window
-scrcpy --v4l2-sink=/dev/videoN -N            # short version
-```
-
-(replace `N` by the device ID, check with `ls /dev/video*`)
-
-Once enabled, you can open your video stream with a v4l2-capable tool:
-
-```bash
-ffplay -i /dev/videoN
-vlc v4l2:///dev/videoN   # VLC might add some buffering delay
-```
-
-For example, you could capture the video within [OBS].
-
-[OBS]: https://obsproject.com/fr
-
-
 ### Connection

 #### Wireless
@ -483,7 +411,7 @@ _(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 not support the
+   and landscape (the current running app may refuse, if it does 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
@ -563,6 +491,18 @@ scrcpy -Sw
 ```


+#### Render expired frames
+
+By default, to minimize latency, _scrcpy_ always renders the last decoded frame
+available, and drops any previous one.
+
+To force the rendering of all frames (at a cost of a possible increased
+latency), use:
+
+```bash
+scrcpy --render-expired-frames
+```
+
 #### Show touches

 For presentations, it may be useful to show physical touches (on the physical
@ -710,15 +650,15 @@ There is no visual feedback, a log is printed to the console.

 #### Push file to device

-To push a file to `/sdcard/Download/` on the device, drag & drop a (non-APK)
-file to the _scrcpy_ window.
+To push a file to `/sdcard/` on the device, drag & drop a (non-APK) file to the
+_scrcpy_ window.

 There is no visual feedback, a log is printed to the console.

 The target directory can be changed on start:

 ```bash
-scrcpy --push-target=/sdcard/Movies/
+scrcpy --push-target /sdcard/foo/bar/
 ```


@ -758,10 +698,10 @@ _<kbd>[Super]</kbd> is typically the <kbd>Windows</kbd> or <kbd>Cmd</kbd> key._
 | Rotate display left                         | <kbd>MOD</kbd>+<kbd>←</kbd> _(left)_
 | Rotate display right                        | <kbd>MOD</kbd>+<kbd>→</kbd> _(right)_
 | Resize window to 1:1 (pixel-perfect)        | <kbd>MOD</kbd>+<kbd>g</kbd>
- | Resize window to remove black borders       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Double-left-click¹_
+ | Resize window to remove black borders       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Double-click¹_
 | Click on `HOME`                             | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Middle-click_
 | Click on `BACK`                             | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Right-click²_
- | Click on `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd> \| _4th-click³_
+ | Click on `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd>
 | Click on `MENU` (unlock screen)             | <kbd>MOD</kbd>+<kbd>m</kbd>
 | Click on `VOLUME_UP`                        | <kbd>MOD</kbd>+<kbd>↑</kbd> _(up)_
 | Click on `VOLUME_DOWN`                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(down)_
@ -770,27 +710,18 @@ _<kbd>[Super]</kbd> is typically the <kbd>Windows</kbd> or <kbd>Cmd</kbd> key._
 | Turn device screen off (keep mirroring)     | <kbd>MOD</kbd>+<kbd>o</kbd>
 | Turn device screen on                       | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
 | Rotate device screen                        | <kbd>MOD</kbd>+<kbd>r</kbd>
- | Expand notification panel                   | <kbd>MOD</kbd>+<kbd>n</kbd> \| _5th-click³_
- | Expand settings panel                       |  <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _Double-5th-click³_
- | Collapse panels                             | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
- | Copy to clipboard⁴                          | <kbd>MOD</kbd>+<kbd>c</kbd>
- | Cut to clipboard⁴                           | <kbd>MOD</kbd>+<kbd>x</kbd>
- | Synchronize clipboards and paste⁴           | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | Expand notification panel                   | <kbd>MOD</kbd>+<kbd>n</kbd>
+ | Collapse notification panel                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copy to clipboard³                          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Cut to clipboard³                           | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Synchronize clipboards and paste³           | <kbd>MOD</kbd>+<kbd>v</kbd>
 | Inject computer clipboard text              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
 | Enable/disable FPS counter (on stdout)      | <kbd>MOD</kbd>+<kbd>i</kbd>
 | Pinch-to-zoom                               | <kbd>Ctrl</kbd>+_click-and-move_

 _¹Double-click on black borders to remove them._  
 _²Right-click turns the screen on if it was off, presses BACK otherwise._  
-_³4th and 5th mouse buttons, if your mouse has them._  
-_⁴Only on Android >= 7._
-
-Shortcuts with repeated keys are executted by releasing and pressing the key a
-second time. For example, to execute "Expand settings panel":
-
- 1. Press and keep pressing <kbd>MOD</kbd>.
- 2. Then double-press <kbd>n</kbd>.
- 3. Finally, release <kbd>MOD</kbd>.
+_³Only on Android >= 7._

 All <kbd>Ctrl</kbd>+_key_ shortcuts are forwarded to the device, so they are
 handled by the active application.
@ -823,6 +754,8 @@ A colleague challenged me to find a name as unpronounceable as [gnirehtet].

 See [BUILD].

+[BUILD]: BUILD.md
+

 ## Common issues

@ -866,10 +799,9 @@ Read the [developers page].
 This README is available in other languages:

 - [Indonesian (Indonesia, `id`) - v1.16](README.id.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`) - v1.17](README.pt-br.md)
- [简体中文 (Simplified Chinese, `zh-Hans`) - v1.17](README.zh-Hans.md)
+- [português brasileiro (Brazilian Portuguese, `pt-BR`) - v1.12.1](README.pt-br.md)
+- [简体中文 (Simplified Chinese, `zh-Hans`) - v1.16](README.zh-Hans.md)
 - [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.
--- a/README.pt-br.md
+++ b/README.pt-br.md
@ -1,16 +1,16 @@
-_Apenas o [README](README.md) original é garantido estar atualizado._
+_Only the original [README](README.md) is guaranteed to be up-to-date._

-# scrcpy (v1.17)
+# scrcpy (v1.12.1)

-Esta aplicação fornece exibição e controle de dispositivos Android conectados via
-USB (ou [via TCP/IP][article-tcpip]). Não requer nenhum acesso _root_.
+Esta aplicação fornece visualização e controle de dispositivos Android conectados via
+USB (ou [via TCP/IP][article-tcpip]). Não requer nenhum acesso root.
 Funciona em _GNU/Linux_, _Windows_ e _macOS_.

 ![screenshot](assets/screenshot-debian-600.jpg)

 Foco em:

- - **leveza** (nativo, mostra apenas a tela do dispositivo)
+ - **leveza** (Nativo, mostra apenas a tela do dispositivo)
 - **performance** (30~60fps)
 - **qualidade** (1920×1080 ou acima)
 - **baixa latência** ([35~70ms][lowlatency])
@ -22,41 +22,36 @@ 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
-controlá-lo usando teclado e mouse.
+
+Em alguns dispositivos, você também precisará ativar [uma opção adicional][control] para controlá-lo usando o teclado e mouse.

 [control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323


-## Obter o app
+## Obtendo 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 (_testing_ e _sid_ por enquanto) e Ubuntu (20.04):
+No Debian (_em testes_ e _sid_ por enquanto):

 ```
 apt install scrcpy
 ```

-Um pacote [Snap] está disponível: [`scrcpy`][snap-link].
+O 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
@ -67,19 +62,21 @@ 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, por simplicidade, um arquivo pré-compilado com todas as dependências
+Para Windows, para simplicidade, um arquivo pré-compilado com todas as dependências
 (incluindo `adb`) está disponível:

- - [README](README.md#windows)
+ - [`scrcpy-win64-v1.12.1.zip`][direct-win64]  
+   _(SHA-256: 57d34b6d16cfd9fe169bc37c4df58ebd256d05c1ea3febc63d9cb0a027ab47c9)_

-Também está disponível em [Chocolatey]:
+[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.12.1/scrcpy-win64-v1.12.1.zip
+
+Também disponível em [Chocolatey]:

 [Chocolatey]: https://chocolatey.org/

@ -97,12 +94,12 @@ scoop install adb    # se você ainda não o tem

 [Scoop]: https://scoop.sh

-Você também pode [compilar o app manualmente][BUILD].
+Você também pode [compilar a aplicação manualmente][BUILD].


 ### macOS

-A aplicação está disponível em [Homebrew]. Apenas instale-a:
+A aplicação está disponível em [Homebrew]. Apenas a instale:

 [Homebrew]: https://brew.sh/

@ -110,22 +107,18 @@ A aplicação está disponível em [Homebrew]. Apenas instale-a:
 brew install scrcpy
 ```

-Você precisa do `adb`, acessível pelo seu `PATH`. Se você ainda não o tem:
+Você precisa do `adb`, acessível através do 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 o app manualmente][BUILD].
+Você também pode [compilar a aplicação manualmente][BUILD].


 ## Executar

-Conecte um dispositivo Android e execute:
+Plugue um dispositivo Android e execute:

 ```bash
 scrcpy
@ -141,87 +134,52 @@ scrcpy --help

 ### Configuração de captura

-#### Reduzir tamanho
+#### Redução de tamanho

 Algumas vezes, é útil espelhar um dispositivo Android em uma resolução menor para
-aumentar a performance.
+aumentar 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 curta
+scrcpy -m 1024  # versão reduzida
 ```

 A outra dimensão é calculada para que a proporção do dispositivo seja preservada.
-Dessa forma, um dispositivo de 1920x1080 será espelhado em 1024x576.
+Dessa forma, um dispositivo em 1920x1080 será espelhado em 1024x576.


-#### Mudar bit-rate
+#### Mudanças no bit-rate

-O bit-rate padrão é 8 Mbps. Para mudar o bit-rate do vídeo (ex: para 2 Mbps):
+O Padrão de bit-rate é 8 mbps. Para mudar o bitrate do vídeo (ex: para 2 Mbps):

 ```bash
 scrcpy --bit-rate 2M
-scrcpy -b 2M  # versão curta
+scrcpy -b 2M  # versão reduzida
 ```

-#### Limitar frame rate
+#### Limitar frame rates

-O frame rate de captura pode ser limitado:
+Em dispositivos com Android >= 10, a captura de frame rate pode ser limitada:

 ```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, para espelhar apenas um olho do Oculus Go:
+Isso é útil por exemplo, ao 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, o redimensionamento é aplicado após o corte.
+Se `--max-size` também for especificado, redimensionar é aplicado após os cortes.


-#### 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:
@ -236,84 +194,65 @@ Para desativar o espelhamento durante a gravação:
 ```bash
 scrcpy --no-display --record file.mp4
 scrcpy -Nr file.mkv
-# interrompa a gravação com Ctrl+C
+# interrompe a gravação com Ctrl+C
+# Ctrl+C não encerrar propriamente no Windows, então desconecte o dispositivo
 ```

-"Frames pulados" são gravados, mesmo que não sejam exibidos em tempo real (por
-motivos de performance). Frames têm seu _horário carimbado_ no dispositivo, então [variação de atraso nos
-pacotes][packet delay variation] não impacta o arquivo gravado.
+"Frames pulados" são gravados, mesmo que não sejam mostrado em tempo real (por motivos de performance).
+Frames tem seu _horário_ _carimbado_ no dispositivo, então [Variação de atraso nos pacotes] não impacta na gravação do arquivo.

-[packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
+[Variação de atraso de pacote]: https://en.wikipedia.org/wiki/Packet_delay_variation


 ### Conexão

-#### Sem fio
+#### Wireless/Sem fio

-_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}'
-    ```
+_Scrcpy_ usa `adb` para se comunicar com o dispositivo, e `adb` pode [conectar-se] à um dispositivo via TCP/IP:

+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. Desconecte seu dispositivo.
-5. Conecte-se ao seu dispositivo: `adb connect DEVICE_IP:5555` _(substitua `DEVICE_IP`)_.
+4. Desplugue seu dispositivo.
+5. Conecte-se ao seu dispositivo: `adb connect DEVICE_IP:5555` _(substitua o `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 curta
+scrcpy -b2M -m800  # versão reduzida
 ```

-[connect]: https://developer.android.com/studio/command-line/adb.html#wireless
+[conectar-se]: https://developer.android.com/studio/command-line/adb.html#wireless


-#### Múltiplos dispositivos
+#### N-dispositivos

-Se vários dispositivos são listados em `adb devices`, você deve especificar o _serial_:
+Se alguns dispositivos estão listados em `adb devices`, você precisa especificar o _serial_:

 ```bash
 scrcpy --serial 0123456789abcdef
-scrcpy -s 0123456789abcdef  # versão curta
+scrcpy -s 0123456789abcdef  # versão reduzida
 ```

 Se o dispositivo está conectado via TCP/IP:

 ```bash
 scrcpy --serial 192.168.0.1:5555
-scrcpy -s 192.168.0.1:5555  # versão curta
+scrcpy -s 192.168.0.1:5555  # versão reduzida
 ```

-Você pode iniciar várias instâncias do _scrcpy_ para vários dispositivos.
+Você pode iniciar algumas instâncias do _scrcpy_ para alguns dispositivos.

-#### Iniciar automaticamente quando dispositivo é conectado
+#### Conexão via SSH

-Você pode usar [AutoAdb]:
+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_):

 ```bash
-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
+adb kill-server    # encerra o servidor local na 5037
 ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
-# mantenha isso aberto
+# mantém isso aberto
 ```

 De outro terminal:
@ -322,33 +261,17 @@ De outro terminal:
 scrcpy
 ```

-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:
+Igual para conexões sem fio, pode ser útil reduzir a qualidade:

 ```
 scrcpy -b2M -m800 --max-fps 15
 ```

-### Configuração de janela
+### Configurações de Janela

 #### Título

-Por padrão, o título da janela é o modelo do dispositivo. Isso pode ser mudado:
+Por padrão, o título da janela é o modelo do dispositivo. Isto pode ser mudado:

 ```bash
 scrcpy --window-title 'Meu dispositivo'
@ -364,15 +287,15 @@ scrcpy --window-x 100 --window-y 100 --window-width 800 --window-height 600

 #### Sem bordas

-Para desativar decorações de janela:
+Para desativar decorações da janela:

 ```bash
 scrcpy --window-borderless
 ```

-#### Sempre no topo
+#### Sempre visível

-Para manter a janela do scrcpy sempre no topo:
+Para manter a janela do scrcpy sempre visível:

 ```bash
 scrcpy --always-on-top
@ -384,117 +307,41 @@ A aplicação pode ser iniciada diretamente em tela cheia:

 ```bash
 scrcpy --fullscreen
-scrcpy -f  # versão curta
+scrcpy -f  # versão reduzida
 ```

-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.
+Tela cheia pode ser alternada dinamicamente com `Ctrl`+`f`.


 ### 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
 ```

-#### Display
+#### Desligar a tela

-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:
+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 <kbd>MOD</kbd>+<kbd>o</kbd> a qualquer momento.
+Ou apertando `Ctrl`+`o` durante qualquer momento.

-Para ligar novamente, pressione <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>.
+Para ligar novamente, pressione `POWER` (ou `Ctrl`+`p`).

-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.
+#### Frames expirados de renderização

-Também pode ser útil evitar que o dispositivo seja suspenso:
+Por padrão, para minimizar a latência, _scrcpy_ sempre renderiza o último frame decodificado disponível e descarta o anterior.

-```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:
+Para forçar a renderização de todos os frames ( com o custo de aumento de latência), use:

 ```bash
 scrcpy --render-expired-frames
@ -502,13 +349,11 @@ scrcpy --render-expired-frames

 #### Mostrar toques

-Para apresentações, pode ser útil mostrar toques físicos (no dispositivo
-físico).
+Para apresentações, pode ser útil mostrar toques físicos(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 restaurar o
-valor inicial no encerramento:
+_Scrcpy_ fornece esta opção de ativar esta funcionalidade no início e desativar no encerramento:

 ```bash
 scrcpy --show-touches
@ -518,137 +363,59 @@ 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 <kbd>MOD</kbd>+<kbd>r</kbd> para mudar entre os modos retrato e
-paisagem.
+Pressione `Ctrl`+`r` para mudar entre os modos Retrato e Paisagem.

-Note que só será rotacionado se a aplicação em primeiro plano suportar a
-orientação requisitada.
+Note que só será rotacionado se a aplicação em primeiro plano tiver suporte para o modo requisitado.

-#### Copiar-colar
+#### Copiar-Colar

-Sempre que a área de transferência do Android muda, é automaticamente sincronizada com a
-área de transferência do computador.
+É possível sincronizar áreas de transferência entre computador e o dispositivo,
+para ambas direções:

-Qualquer atalho com <kbd>Ctrl</kbd> é encaminhado para o dispositivo. Em particular:
- - <kbd>Ctrl</kbd>+<kbd>c</kbd> tipicamente copia
- - <kbd>Ctrl</kbd>+<kbd>x</kbd> tipicamente recorta
- - <kbd>Ctrl</kbd>+<kbd>v</kbd> tipicamente cola (após a sincronização de área de transferência
-   computador-para-dispositivo)
+ - `Ctrl`+`c` copia a área de transferência do dispositivo para a área de trasferência do computador;
+ - `Ctrl`+`Shift`+`v` copia a área de transferência do computador para a área de transferência do dispositivo;
+ - `Ctrl`+`v` _cola_ a área de transferência do computador como uma sequência de eventos de texto (mas
+   quebra caracteres não-ASCII).

-Isso tipicamente funciona como esperado.
+#### Preferências de injeção de texto

-O comportamento de fato depende da aplicação ativa, no entanto. Por exemplo,
-_Termux_ envia SIGINT com <kbd>Ctrl</kbd>+<kbd>c</kbd>, e _K-9 Mail_
-compõe uma nova mensagem.
-
-Para copiar, recortar e colar em tais casos (mas apenas suportado no Android >= 7):
- - <kbd>MOD</kbd>+<kbd>c</kbd> injeta `COPY`
- - <kbd>MOD</kbd>+<kbd>x</kbd> injeta `CUT`
- - <kbd>MOD</kbd>+<kbd>v</kbd> injeta `PASTE` (após a sincronização de área de transferência
-   computador-para-dispositivo)
-
-Em adição, <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> permite injetar o
-texto da área de transferência do computador como uma sequência de eventos de tecla. Isso é útil quando o
-componente não aceita colar texto (por exemplo no _Termux_), mas pode
-quebrar conteúdo não-ASCII.
-
-**ADVERTÊNCIA:** Colar a área de transferência do computador para o dispositivo (tanto via
-<kbd>Ctrl</kbd>+<kbd>v</kbd> quanto <kbd>MOD</kbd>+<kbd>v</kbd>) copia o conteúdo
-para a área de transferência do dispositivo. Como consequência, qualquer aplicação Android pode ler
-o seu conteúdo. Você deve evitar colar conteúdo sensível (como senhas) dessa
-forma.
-
-Alguns dispositivos não se comportam como esperado quando a área de transferência é definida
-programaticamente. Uma opção `--legacy-paste` é fornecida para mudar o comportamento
-de <kbd>Ctrl</kbd>+<kbd>v</kbd> e <kbd>MOD</kbd>+<kbd>v</kbd> para que eles
-também injetem o texto da área de transferência do computador como uma sequência de eventos de tecla (da mesma
-forma que <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>).
-
-#### Pinçar para dar zoom
-
-Para simular "pinçar para dar zoom": <kbd>Ctrl</kbd>+_clicar-e-mover_.
-
-Mais precisamente, segure <kbd>Ctrl</kbd> enquanto pressiona o botão de clique-esquerdo. Até que
-o botão de clique-esquerdo seja liberado, todos os movimentos do mouse ampliar e rotacionam o
-conteúdo (se suportado pelo app) relativo ao centro da tela.
-
-Concretamente, scrcpy gera eventos adicionais de toque de um "dedo virtual" em
-uma posição invertida em relação ao centro da tela.
-
-
-#### Preferência de injeção de texto
-
-Existem dois tipos de [eventos][textevents] gerados ao digitar um texto:
- - _eventos de tecla_, sinalizando que a tecla foi pressionada ou solta;
+Existe dois tipos de [eventos][textevents] gerados ao digitar um texto:
+ - _eventos de teclas_, 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 tecla, assim o teclado comporta-se
-como esperado em jogos (normalmente para teclas WASD).
+Por padrão, letras são injetadas usando eventos de teclas, assim teclados comportam-se
+como esperado em jogos (normalmente para tecladas WASD)

-Mas isso pode [causar problemas][prefertext]. Se você encontrar tal problema, você
-pode evitá-lo com:
+Mas isto pode [causar problemas][prefertext]. Se você encontrar tal problema,
+pode evitá-lo usando:

 ```bash
 scrcpy --prefer-text
 ```

-(mas isso vai quebrar o comportamento do teclado em jogos)
+(mas isto 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


-#### 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
+### Transferência de 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 dispositivo
+#### Enviar arquivo para o dispositivo

-Para enviar um arquivo para `/sdcard/` no dispositivo, arraste e solte um arquivo (não-APK) para a
-janela do _scrcpy_.
+Para enviar um arquivo para o diretório `/sdcard/` no dispositivo, arraste e solte um arquivo não APK para a janela do
+_scrcpy_.

 Não existe feedback visual, um log é imprimido no console.

@ -661,73 +428,45 @@ scrcpy --push-target /sdcard/foo/bar/

 ### Encaminhamento de áudio

-Áudio não é encaminhado pelo _scrcpy_. Use [sndcpy].
+Áudio não é encaminhando pelo _scrcpy_. Use [USBaudio] (Apenas linux).

 Também veja [issue #14].

-[sndcpy]: https://github.com/rom1v/sndcpy
+[USBaudio]: https://github.com/rom1v/usbaudio
 [issue #14]: https://github.com/Genymobile/scrcpy/issues/14


 ## Atalhos

-Na lista a seguir, <kbd>MOD</kbd> é o modificador de atalho. Por padrão, é
-<kbd>Alt</kbd> (esquerdo) ou <kbd>Super</kbd> (esquerdo).
-
-Ele pode ser mudado usando `--shortcut-mod`. Possíveis teclas são `lctrl`, `rctrl`,
-`lalt`, `ralt`, `lsuper` e `rsuper`. Por exemplo:
-
-```bash
-# usar RCtrl para atalhos
-scrcpy --shortcut-mod=rctrl
-
-# usar tanto LCtrl+LAlt quanto LSuper para atalhos
-scrcpy --shortcut-mod=lctrl+lalt,lsuper
-```
-
-_<kbd>[Super]</kbd> é tipicamente a tecla <kbd>Windows</kbd> ou <kbd>Cmd</kbd>._
-
-[Super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button)
-
- | Ação                                        |   Atalho
- | ------------------------------------------- |:-----------------------------
- | Mudar modo de tela cheia                    | <kbd>MOD</kbd>+<kbd>f</kbd>
- | Rotacionar display para esquerda            | <kbd>MOD</kbd>+<kbd>←</kbd> _(esquerda)_
- | Rotacionar display para direita             | <kbd>MOD</kbd>+<kbd>→</kbd> _(direita)_
- | Redimensionar janela para 1:1 (pixel-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_
+ | Ação                                                          |   Atalho                        |   Atalho (macOS)
+ | ------------------------------------------------------------- |:------------------------------- |:-----------------------------
+ | Alternar para modo de tela cheia                              | `Ctrl`+`f`                      | `Cmd`+`f`
+ | Redimensionar janela para pixel-perfect(Escala 1:1)           | `Ctrl`+`g`                      | `Cmd`+`g`
+ | Redimensionar janela para tirar as bordas pretas              | `Ctrl`+`x` \| _Clique-duplo¹_   | `Cmd`+`x`  \| _Clique-duplo¹_
+ | Clicar em `HOME`                                              | `Ctrl`+`h` \| _Clique-central_  | `Ctrl`+`h` \| _Clique-central_
+ | Clicar em `BACK`                                              | `Ctrl`+`b` \| _Clique-direito²_ | `Cmd`+`b`  \| _Clique-direito²_
+ | Clicar em `APP_SWITCH`                                        | `Ctrl`+`s`                      | `Cmd`+`s`
+ | Clicar em `MENU`                                              | `Ctrl`+`m`                      | `Ctrl`+`m`
+ | Clicar em `VOLUME_UP`                                         | `Ctrl`+`↑` _(cima)_             | `Cmd`+`↑` _(cima)_
+ | Clicar em `VOLUME_DOWN`                                       | `Ctrl`+`↓` _(baixo)_            | `Cmd`+`↓` _(baixo)_
+ | Clicar em `POWER`                                             | `Ctrl`+`p`                      | `Cmd`+`p`
+ | Ligar                                                         | _Clique-direito²_               | _Clique-direito²_
+ | Desligar a tela do dispositivo                                | `Ctrl`+`o`                      | `Cmd`+`o`
+ | Rotacionar tela do dispositivo                                | `Ctrl`+`r`                      | `Cmd`+`r`
+ | Expandir painel de notificação                                | `Ctrl`+`n`                      | `Cmd`+`n`
+ | Esconder painel de notificação                                | `Ctrl`+`Shift`+`n`              | `Cmd`+`Shift`+`n`
+ | Copiar área de transferência do dispositivo para o computador | `Ctrl`+`c`                      | `Cmd`+`c`
+ | Colar área de transferência do computador para o dispositivo  | `Ctrl`+`v`                      | `Cmd`+`v`
+ | Copiar área de transferência do computador para dispositivo   | `Ctrl`+`Shift`+`v`              | `Cmd`+`Shift`+`v`
+ | Ativar/desativar contador de FPS(Frames por segundo)          | `Ctrl`+`i`                      | `Cmd`+`i`

 _¹Clique-duplo em bordas pretas para removê-las._  
-_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.
+_²Botão direito liga a tela se ela estiver desligada, clique BACK para o contrário._


 ## Caminhos personalizados

-Para usar um binário _adb_ específico, configure seu caminho na variável de ambiente
-`ADB`:
+Para usar um binário específico _adb_, configure seu caminho na variável de ambiente `ADB`:

    ADB=/caminho/para/adb scrcpy

@ -739,7 +478,7 @@ Para sobrepor o caminho do arquivo `scrcpy-server`, configure seu caminho em

 ## Por quê _scrcpy_?

-Um colega me desafiou a encontrar um nome tão impronunciável quanto [gnirehtet].
+Um colega me desafiou a encontrar um nome impronunciável como [gnirehtet].

 [`strcpy`] copia uma **str**ing; `scrcpy` copia uma **scr**een.

@ -756,12 +495,12 @@ Veja [BUILD].

 ## Problemas comuns

-Veja o [FAQ](FAQ.md).
+Veja [FAQ](FAQ.md).


 ## Desenvolvedores

-Leia a [página dos desenvolvedores][developers page].
+Leia a  [developers page].

 [developers page]: DEVELOP.md

--- a/README.zh-Hans.md
+++ b/README.zh-Hans.md
@ -2,108 +2,115 @@ _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[ed130e05]进行翻译。
+本文根据[479d10d]进行翻译。

-[ed130e05]: https://github.com/Genymobile/scrcpy/blob/ed130e05d55615d6014d93f15cfcb92ad62b01d8/README.md
+[479d10d]: https://github.com/Genymobile/scrcpy/commit/479d10dc22b70272187e0963c6ad24d754a669a2#diff-04c6e90faac2675aa89e2176d2eec7d8

-# 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)
- - **性能** (30~60fps)
- - **质量** (分辨率可达 1920×1080 或更高)
- - **低延迟** ([35~70ms][lowlatency])
- - **快速启动** (最快 1 秒内即可显示第一帧)
- - **无侵入性** (不会在设备上遗留任何程序)
-
-[lowlatency]: https://github.com/Genymobile/scrcpy/pull/646
+ - **轻量** （原生，仅显示设备屏幕）
+ - **性能** （30~60fps）
+ - **质量** （分辨率可达1920x1080或更高）
+ - **低延迟** (35-70ms)
+ - **快速启动** （数秒内即能开始显示）
+ - **无侵入性** （不需要在安卓设备上安装任何程序）


-## 系统要求
+## 使用要求

-安卓设备最低需要支持 API 21 (Android 5.0)。
+安卓设备系统版本需要在Android 5.0（API 21)或以上。

-确保设备已[开启 adb 调试][enable-adb]。
+确保您在设备上开启了[adb调试]。

-[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
+[adb调试]: https://developer.android.com/studio/command-line/adb.html#Enabling

-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。
+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。

-[control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
+[额外的选项]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323


-## 获取本程序
+## 获取scrcpy

 <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 (目前仅支持 _testing_ 和 _sid_ 分支) 和Ubuntu (20.04) 上：
+在Debian（目前仅测试版和不稳定版，即 _testing_ 和 _sid_ 版本）和Ubuntu （20.04）上：

 ```
 apt install scrcpy
 ```

-我们也提供 [Snap] 包： [`scrcpy`][snap-link]。
+[Snap]包也是可用的： [`scrcpy`][snap-link].

 [snap-link]: https://snapstats.org/snaps/scrcpy

 [snap]: https://en.wikipedia.org/wiki/Snappy_(package_manager)

-对 Fedora 我们提供 [COPR] 包： [`scrcpy`][copr-link]。
+对于Fedora用户，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 Arch Linux 我们提供 [AUR] 包： [`scrcpy`][aur-link]。
+对于Arch Linux用户，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 Gentoo 我们提供 [Ebuild] 包：[`scrcpy/`][ebuild-link]。
+对于Gentoo用户，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[自行构建][BUILD] (不必担心，这并不困难)。
+您也可以[自行编译][编译](不必担心，这并不困难)。



 ### Windows

-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。
+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。

- - [README](README.md#windows)
+ - [`scrcpy-win64-v1.16.zip`][direct-win64]  
+   _(SHA-256: 3f30dc5db1a2f95c2b40a0f5de91ec1642d9f53799250a8c529bc882bc0918f0)_

-也可以使用 [Chocolatey]：
+[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.16/scrcpy-win64-v1.16.zip
+
+您也可以在[Chocolatey]下载：

 [Chocolatey]: https://chocolatey.org/

 ```bash
 choco install scrcpy
-choco install adb    # 如果还没有 adb
+choco install adb    # 如果你没有adb
 ```

-或者 [Scoop]:
+也可以使用 [Scoop]:

 ```bash
 scoop install scrcpy
-scoop install adb    # 如果还没有 adb
+scoop install adb    # 如果你没有adb
 ```

 [Scoop]: https://scoop.sh

-您也可以[自行构建][BUILD]。
+您也可以[自行编译][编译]。


 ### macOS

-本程序已发布到 [Homebrew]。直接安装即可：
+您可以使用[Homebrew]下载scrcpy。直接安装就可以了：

 [Homebrew]: https://brew.sh/

@ -111,28 +118,24 @@ scoop install adb    # 如果还没有 adb
 brew install scrcpy
 ```

-你还需要在 `PATH` 内有 `adb`。如果还没有：
+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：

 ```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[自行构建][BUILD]。
+您也可以[自行编译][编译]。


-## 运行
+## 运行scrcpy

-连接安卓设备，然后执行：
+用USB链接电脑和安卓设备，并执行：

 ```bash
 scrcpy
 ```

-本程序支持命令行参数，查看参数列表：
+支持带命令行参数执行，查看参数列表：

 ```bash
 scrcpy --help
@ -140,129 +143,111 @@ scrcpy --help

 ## 功能介绍

-### 捕获设置
+### 画面设置

-#### 降低分辨率
+#### 缩小分辨率

-有时候，可以通过降低镜像的分辨率来提高性能。
+有时候，将设备屏幕镜像分辨率降低可以有效地提升性能。

-要同时限制宽度和高度到某个值 (例如 1024)：
+我们可以将高度和宽度都限制在一定大小内（如 1024）：

 ```bash
 scrcpy --max-size 1024
-scrcpy -m 1024  # 简写
+scrcpy -m 1024  # short version
 ```

-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。
+较短的一边会被按比例缩小以保持设备的显示比例。
+这样，1920x1080 的设备会以 1024x576 的分辨率显示。


-#### 修改码率
+#### 修改画面比特率

-默认码率是 8Mbps。要改变视频的码率 (例如改为 2Mbps)：
+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)：

 ```bash
 scrcpy --bit-rate 2M
-scrcpy -b 2M  # 简写
+scrcpy -b 2M  # short version
 ```

-#### 限制帧率
+#### 限制画面帧率

-要限制捕获的帧率：
+画面的帧率可以通过下面的命令被限制：

 ```bash
 scrcpy --max-fps 15
 ```

-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。
+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。

 #### 画面裁剪

-可以对设备屏幕进行裁剪，只镜像屏幕的一部分。
+设备画面可在裁切后进行镜像，以显示部分屏幕。

-例如可以只镜像 Oculus Go 的一只眼睛。
+这项功能可以用于，例如，只显示Oculus Go的一只眼睛。

 ```bash
-scrcpy --crop 1224:1440:0:0   # 以 (0,0) 为原点的 1224x1440 像素
+scrcpy --crop 1224:1440:0:0   # 1224x1440 at offset (0,0)
 ```

-如果同时指定了 `--max-size`，会先进行裁剪，再进行缩放。
+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。


-#### 锁定屏幕方向
+#### 锁定屏幕朝向


-要锁定镜像画面的方向：
+可以使用如下命令锁定屏幕朝向：

 ```bash
-scrcpy --lock-video-orientation 0   # 自然方向
-scrcpy --lock-video-orientation 1   # 逆时针旋转 90°
+scrcpy --lock-video-orientation 0   # 自然朝向
+scrcpy --lock-video-orientation 1   # 90° 逆时针旋转
 scrcpy --lock-video-orientation 2   # 180°
-scrcpy --lock-video-orientation 3   # 顺时针旋转 90°
+scrcpy --lock-video-orientation 3   # 90° 顺时针旋转
 ```

-只影响录制的方向。
+该设定影响录制。

-[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

-可以在镜像的同时录制视频：
+可以在屏幕镜像的同时录制视频：

 ```bash
 scrcpy --record file.mp4
 scrcpy -r file.mkv
 ```

-仅录制，不显示镜像：
+在不开启屏幕镜像的同时录制：

 ```bash
 scrcpy --no-display --record file.mp4
 scrcpy -Nr file.mkv
-# 按 Ctrl+C 停止录制
+# 按Ctrl+C以停止录制
 ```

-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。
+在显示中“被跳过的帧”会被录制，虽然它们由于性能原因没有实时显示。
+在传输中每一帧都有 _时间戳_ ，所以 [包时延变化] 并不影响录制的文件。

-[packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
+[包时延变化]: https://en.wikipedia.org/wiki/Packet_delay_variation


-### 连接
+### 连接方式

 #### 无线

-_Scrcpy_ 使用 `adb` 与设备通信，并且 `adb` 支持通过 TCP/IP [连接]到设备:
+_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:

-1. 将设备和电脑连接至同一 Wi-Fi。
-2. 打开 设置 → 关于手机 → 状态信息，获取设备的 IP 地址，也可以执行以下的命令：
-    ```bash
-    adb shell ip route | awk '{print $9}'
-    ```
+1. 将您的安卓设备和电脑连接至同一Wi-Fi。
+2. 获取安卓设备的IP地址（在设置-关于手机-状态信息）。
+3. 打开安卓设备的网络adb功能`adb tcpip 5555`。
+4. 将您的设备与电脑断开连接。
+5. 连接到您的设备：`adb connect DEVICE_IP:5555` _(用设备IP替换 `DEVICE_IP`)_.
+6. 运行`scrcpy`。

-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：
+降低比特率和分辨率可能有助于性能：

 ```bash
 scrcpy --bit-rate 2M --max-size 800
-scrcpy -b2M -m800  # 简写
+scrcpy -b2M -m800  # short version
 ```

 [连接]: https://developer.android.com/studio/command-line/adb.html#wireless
@ -270,18 +255,18 @@ scrcpy -b2M -m800  # 简写

 #### 多设备

-如果 `adb devices` 列出了多个设备，您必须指定设备的 _序列号_ ：
+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_ ：

 ```bash
 scrcpy --serial 0123456789abcdef
-scrcpy -s 0123456789abcdef  # 简写
+scrcpy -s 0123456789abcdef  # short version
 ```

-如果设备通过 TCP/IP 连接：
+如果设备是通过TCP/IP方式连接到电脑的：

 ```bash
 scrcpy --serial 192.168.0.1:5555
-scrcpy -s 192.168.0.1:5555  # 简写
+scrcpy -s 192.168.0.1:5555  # short version
 ```

 您可以同时启动多个 _scrcpy_ 实例以同时显示多个设备的画面。
@ -296,38 +281,38 @@ autoadb scrcpy -s '{}'

 [AutoAdb]: https://github.com/rom1v/autoadb

-#### SSH 隧道
+#### SSH 连接

-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)：
+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：

 ```bash
-adb kill-server    # 关闭本地 5037 端口上的 adb 服务端
+adb kill-server    # 关闭本地5037端口上的adb服务器
 ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
 # 保持该窗口开启
 ```

-在另一个终端：
+从另一个终端：

 ```bash
 scrcpy
 ```

-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)：
+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：

 ```bash
-adb kill-server    # 关闭本地 5037 端口上的 adb 服务端
+adb kill-server    # kill the local adb server on 5037
 ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
 # 保持该窗口开启
 ```

-在另一个终端:
+从另一个终端:

 ```bash
 scrcpy --force-adb-forward
 ```


-类似无线网络连接，可能需要降低画面质量：
+和无线网络连接类似，下列设置可能对改善性能有帮助：

 ```
 scrcpy -b2M -m800 --max-fps 15
@ -337,7 +322,7 @@ scrcpy -b2M -m800 --max-fps 15

 #### 标题

-窗口的标题默认为设备型号。可以通过如下命令修改：
+窗口的标题默认为设备型号。您可以通过如下命令修改它：

 ```bash
 scrcpy --window-title 'My device'
@ -373,14 +358,14 @@ scrcpy --always-on-top

 ```bash
 scrcpy --fullscreen
-scrcpy -f  # 简写
+scrcpy -f  # short version
 ```

-全屏状态可以通过 <kbd>MOD</kbd>+<kbd>f</kbd> 随时切换。
+全屏状态可以通过<kbd>MOD</kbd>+<kbd>f</kbd>实时改变。

 #### 旋转

-可以通过以下命令旋转窗口：
+通过如下命令，窗口可以旋转：

 ```bash
 scrcpy --rotation 1
@ -388,23 +373,27 @@ scrcpy --rotation 1

 可选的值有：
 - `0`: 无旋转
- - `1`: 逆时针旋转 90°
- - `2`: 旋转 180°
- - `3`: 顺时针旋转 90°
+ - `1`: 逆时针旋转90°
+ - `2`: 旋转180°
+ - `3`: 顺时针旋转90°

-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。
+这同样可以使用<kbd>MOD</kbd>+<kbd>←</kbd>
+_(左)_ 和 <kbd>MOD</kbd>+<kbd>→</kbd> _(右)_ 的快捷键实时更改。

-需要注意的是， _scrcpy_ 有三个不同的方向：
- - <kbd>MOD</kbd>+<kbd>r</kbd> 请求设备在竖屏和横屏之间切换 (如果前台应用程序不支持请求的朝向，可能会拒绝该请求)。
- - [`--lock-video-orientation`](#锁定屏幕方向) 改变镜像的朝向 (设备传输到电脑的画面的朝向)。这会影响录制。
- - `--rotation` (或 <kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>) 只旋转窗口的内容。这只影响显示，不影响录制。
+需要注意的是， _scrcpy_ 控制三个不同的朝向：
+ - <kbd>MOD</kbd>+<kbd>r</kbd> 请求设备在竖屏和横屏之间切换（如果前台应用程序不支持所请求的朝向，可能会拒绝该请求）。
+
+ - `--lock-video-orientation` 改变镜像的朝向（设备镜像到电脑的画面朝向）。这会影响录制。
+
+ - `--rotation` （或<kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>）
+   只旋转窗口的画面。这只影响显示，不影响录制。


 ### 其他镜像设置

 #### 只读

-禁用电脑对设备的控制 (如键盘输入、鼠标事件和文件拖放)：
+关闭电脑对设备的控制（如键盘输入、鼠标移动和文件传输）：

 ```bash
 scrcpy --no-control
@ -413,49 +402,53 @@ scrcpy -n

 #### 显示屏

-如果设备有多个显示屏，可以选择要镜像的显示屏：
+如果有多个显示屏可用，您可以选择特定显示屏进行镜像：

 ```bash
 scrcpy --display 1
 ```

-可以通过如下命令列出所有显示屏的 id：
+您可以通过如下命令找到显示屏的id：

 ```
-adb shell dumpsys display   # 在输出中搜索 “mDisplayId=”
+adb shell dumpsys display   # 在回显中搜索“mDisplayId=”
 ```

-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)。
+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）。


 #### 保持常亮

-阻止设备在连接时休眠：
+防止设备在已连接的状态下休眠：

 ```bash
 scrcpy --stay-awake
 scrcpy -w
 ```

-程序关闭时会恢复设备原来的设置。
+程序关闭后，设备设置会恢复原样。


 #### 关闭设备屏幕

-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：
+在启动屏幕镜像时，可以通过如下命令关闭设备的屏幕：

 ```bash
 scrcpy --turn-screen-off
 scrcpy -S
 ```

-或者在任何时候按 <kbd>MOD</kbd>+<kbd>o</kbd>。
+或者在需要的时候按<kbd>MOD</kbd>+<kbd>o</kbd>。

-要重新打开屏幕，按下 <kbd>MOD</kbd>+<kbd>Shift</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>.

-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。
+在Android上,`电源`按钮始终能把屏幕打开。

-还可以同时阻止设备休眠：
+为了方便，如果按下`电源`按钮的事件是通过 _scrcpy_ 发出的（通过点按鼠标右键或<kbd>MOD</kbd>+<kbd>p</kbd>），它会在短暂的延迟后将屏幕关闭。
+
+物理的`电源`按钮仍然能打开设备屏幕。
+
+同时，这项功能还能被用于防止设备休眠：

 ```bash
 scrcpy --turn-screen-off --stay-awake
@ -463,11 +456,11 @@ scrcpy -Sw
 ```


-#### 渲染过期帧
+#### 渲染超时帧

-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。
+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。

-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
@ -475,9 +468,9 @@ scrcpy --render-expired-frames

 #### 显示触摸

-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)。
+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）。

-Android 在 _开发者选项_ 中提供了这项功能。
+Android在 _开发者设置_ 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：

@ -486,12 +479,12 @@ scrcpy --show-touches
 scrcpy -t
 ```

-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)。
+请注意这项功能只能显示 _物理_ 触摸（要用手在屏幕上触摸）。


 #### 关闭屏保

-_Scrcpy_ 默认不会阻止电脑上开启的屏幕保护。
+_Scrcpy_ 不会默认关闭屏幕保护。

 关闭屏幕保护：

@ -504,58 +497,64 @@ scrcpy --disable-screensaver

 #### 旋转设备屏幕

-使用 <kbd>MOD</kbd>+<kbd>r</kbd> 在竖屏和横屏模式之间切换。
+使用<kbd>MOD</kbd>+<kbd>r</kbd>以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。

-#### 复制粘贴
+#### 复制黏贴

-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。
+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。

 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> 通常执行复制
- - <kbd>Ctrl</kbd>+<kbd>x</kbd> 通常执行剪切
- - <kbd>Ctrl</kbd>+<kbd>v</kbd> 通常执行粘贴 (在电脑到设备的剪贴板同步完成之后)
+ - <kbd>Ctrl</kbd>+<kbd>c</kbd> 复制
+ - <kbd>Ctrl</kbd>+<kbd>x</kbd> 剪切
+ - <kbd>Ctrl</kbd>+<kbd>v</kbd> 黏贴 （在电脑到设备的剪贴板同步完成之后）

-大多数时候这些按键都会执行以上的功能。
+这通常如您所期望的那样运作。

-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。
+但实际的行为取决于设备上的前台程序。
+例如 _Termux_ 在<kbd>Ctrl</kbd>+<kbd>c</kbd>被按下时发送 SIGINT，
+又如 _K-9 Mail_ 会新建一封新邮件。

-要在这种情况下进行剪切，复制和粘贴 (仅支持 Android >= 7)：
- - <kbd>MOD</kbd>+<kbd>c</kbd> 注入 `COPY` (复制)
- - <kbd>MOD</kbd>+<kbd>x</kbd> 注入 `CUT` (剪切)
- - <kbd>MOD</kbd>+<kbd>v</kbd> 注入 `PASTE` (粘贴) (在电脑到设备的剪贴板同步完成之后)
+在这种情况下剪切复制黏贴（仅在Android >= 7时可用）：
+ - <kbd>MOD</kbd>+<kbd>c</kbd> 注入 `COPY`（复制）
+ - <kbd>MOD</kbd>+<kbd>x</kbd> 注入 `CUT`（剪切）
+ - <kbd>MOD</kbd>+<kbd>v</kbd> 注入 `PASTE`（黏贴）（在电脑到设备的剪贴板同步完成之后）

-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。
+另外，<kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>可以将电脑的剪贴板内容转换为一串按键事件输入到设备。
+在应用程序不接受黏贴时（比如 _Termux_ ），这项功能可以排上一定的用场。
+需要注意的是，这项功能可能会导致非ASCII编码的内容出现错误。

-**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。
+**警告：** 将电脑剪贴板的内容黏贴至设备（无论是通过<kbd>Ctrl</kbd>+<kbd>v</kbd>还是<kbd>MOD</kbd>+<kbd>v</kbd>）
+都需要将内容保存至设备的剪贴板。如此，任何一个应用程序都可以读取它。
+您应当避免将敏感内容通过这种方式传输（如密码）。

-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。

-#### 双指缩放
+#### 捏拉缩放

-模拟“双指缩放”：<kbd>Ctrl</kbd>+_按住并移动鼠标_。
+模拟 “捏拉缩放”：<kbd>Ctrl</kbd>+_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)。
+更准确的说，您需要在按住<kbd>Ctrl</kbd>的同时按住并移动鼠标。
+在鼠标左键松开之后，光标的任何操作都会相对于屏幕的中央进行。

-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。
+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。


 #### 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或松开。
- - _文本事件_ ，代表一个字符被输入。
+ - _按键事件_ ，代表一个按键被按下/松开。
+ - _文本事件_ ，代表一个文本被输入。

-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)。
+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）。

-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：
+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：

 ```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
@ -563,7 +562,8 @@ scrcpy --prefer-text

 #### 按键重复

-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。
+当你一直按着一个按键不放时，程序默认产生多个按键事件。
+在某些游戏中这可能会导致性能问题。

 避免转发重复按键事件：

@ -572,27 +572,18 @@ scrcpy --no-key-repeat
 ```


-#### 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
+### 文件传输

 #### 安装APK

-将 APK 文件 (文件名以 `.apk` 结尾) 拖放到 _scrcpy_ 窗口来安装。
+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。

 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

-要推送文件到设备的 `/sdcard/`，将 (非 APK) 文件拖放至 _scrcpy_ 窗口。
+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。

 该操作没有可见的响应，只会在控制台输出日志。

@ -605,7 +596,7 @@ 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]。

@ -613,90 +604,93 @@ _Scrcpy_ 不支持音频。请使用 [sndcpy].
 [issue #14]: https://github.com/Genymobile/scrcpy/issues/14


-## 快捷键
+## 热键

-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 (左) <kbd>Super</kbd>。
+在下列表格中, <kbd>MOD</kbd> 是热键的修饰键。
+默认是（左）<kbd>Alt</kbd>或者（左）<kbd>Super</kbd>。

-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：
+您可以使用 `--shortcut-mod`后缀来修改它。可选的按键有`lctrl`、`rctrl`、
+`lalt`、`ralt`、`lsuper`和`rsuper`。如下例：

 ```bash
-# 使用右 Ctrl 键
+# 使用右侧的Ctrl键
 scrcpy --shortcut-mod=rctrl

-# 使用左 Ctrl 键 + 左 Alt 键，或 Super 键
+# 使用左侧的Ctrl键、Alt键或Super键
 scrcpy --shortcut-mod=lctrl+lalt,lsuper
 ```

-_<kbd>[Super]</kbd> 键通常是指 <kbd>Windows</kbd> 或 <kbd>Cmd</kbd> 键。_
+_一般来说，<kbd>[Super]</kbd>就是<kbd>Windows</kbd>或者<kbd>Cmd</kbd>。_

 [Super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button)

- | 操作                              | 快捷键                                       |
- | --------------------------------- | :------------------------------------------- |
- | 全屏                              | <kbd>MOD</kbd>+<kbd>f</kbd>                  |
- | 向左旋转屏幕                      | <kbd>MOD</kbd>+<kbd>←</kbd> _(左箭头)_       |
- | 向右旋转屏幕                      | <kbd>MOD</kbd>+<kbd>→</kbd> _(右箭头)_       |
- | 将窗口大小重置为1:1 (匹配像素)    | <kbd>MOD</kbd>+<kbd>g</kbd>                  |
- | 将窗口大小重置为消除黑边          | <kbd>MOD</kbd>+<kbd>w</kbd> \| _双击¹_       |
- | 点按 `主屏幕`                     | <kbd>MOD</kbd>+<kbd>h</kbd> \| _鼠标中键_    |
- | 点按 `返回`                       | <kbd>MOD</kbd>+<kbd>b</kbd> \| _鼠标右键²_   |
- | 点按 `切换应用`                   | <kbd>MOD</kbd>+<kbd>s</kbd>                  |
- | 点按 `菜单` (解锁屏幕)            | <kbd>MOD</kbd>+<kbd>m</kbd>                  |
- | 点按 `音量+`                      | <kbd>MOD</kbd>+<kbd>↑</kbd> _(上箭头)_       |
- | 点按 `音量-`                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(下箭头)_       |
- | 点按 `电源`                       | <kbd>MOD</kbd>+<kbd>p</kbd>                  |
- | 打开屏幕                          | _鼠标右键²_                                  |
- | 关闭设备屏幕 (但继续在电脑上显示) | <kbd>MOD</kbd>+<kbd>o</kbd>                  |
- | 打开设备屏幕                      | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd> |
- | 旋转设备屏幕                      | <kbd>MOD</kbd>+<kbd>r</kbd>                  |
- | 展开通知面板                      | <kbd>MOD</kbd>+<kbd>n</kbd>                  |
- | 收起通知面板                      | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd> |
- | 复制到剪贴板³                     | <kbd>MOD</kbd>+<kbd>c</kbd>                  |
- | 剪切到剪贴板³                     | <kbd>MOD</kbd>+<kbd>x</kbd>                  |
- | 同步剪贴板并粘贴³                 | <kbd>MOD</kbd>+<kbd>v</kbd>                  |
- | 注入电脑剪贴板文本                | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> |
- | 打开/关闭FPS显示 (在 stdout)      | <kbd>MOD</kbd>+<kbd>i</kbd>                  |
- | 捏拉缩放                          | <kbd>Ctrl</kbd>+_按住并移动鼠标_             |
+ | 操作                                        |   快捷键
+ | ------------------------------------------- |:-----------------------------
+ | 全屏                                        | <kbd>MOD</kbd>+<kbd>f</kbd>
+ | 向左旋转屏幕                                 | <kbd>MOD</kbd>+<kbd>←</kbd> _(左)_
+ | 向右旋转屏幕                                 | <kbd>MOD</kbd>+<kbd>→</kbd> _(右)_
+ | 将窗口大小重置为1:1 (像素优先)                | <kbd>MOD</kbd>+<kbd>g</kbd>
+ | 将窗口大小重置为消除黑边                      | <kbd>MOD</kbd>+<kbd>w</kbd> \| _双击¹_
+ | 点按 `主屏幕`                                | <kbd>MOD</kbd>+<kbd>h</kbd> \| _点击鼠标中键_
+ | 点按 `返回`                                  | <kbd>MOD</kbd>+<kbd>b</kbd> \| _点击鼠标右键²_
+ | 点按 `切换应用`                              | <kbd>MOD</kbd>+<kbd>s</kbd>
+ | 点按 `菜单` （解锁屏幕）                      | <kbd>MOD</kbd>+<kbd>m</kbd>
+ | 点按 `音量+`                                | <kbd>MOD</kbd>+<kbd>↑</kbd> _(up)_
+ | 点按 `音量-`                                | <kbd>MOD</kbd>+<kbd>↓</kbd> _(down)_
+ | 点按 `电源`                                 | <kbd>MOD</kbd>+<kbd>p</kbd>
+ | 打开屏幕                                    | _点击鼠标右键²_
+ | 关闭设备屏幕（但继续在电脑上显示）             | <kbd>MOD</kbd>+<kbd>o</kbd>
+ | 打开设备屏幕                                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
+ | 旋转设备屏幕                                 | <kbd>MOD</kbd>+<kbd>r</kbd>
+ | 展开通知面板                                 | <kbd>MOD</kbd>+<kbd>n</kbd>
+ | 展开快捷操作                                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | 复制到剪贴板³                                | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | 剪切到剪贴板³                                | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | 同步剪贴板并黏贴³                            | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | 导入电脑剪贴板文本                           | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
+ | 打开/关闭FPS显示（在 stdout)                 | <kbd>MOD</kbd>+<kbd>i</kbd>
+ | 捏拉缩放                                    | <kbd>Ctrl</kbd>+_点按并移动鼠标_

-_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 。_
+_¹双击黑色边界以关闭黑色边界_  
+_²点击鼠标右键将在屏幕熄灭时点亮屏幕，其余情况则视为按下 返回键 。_  
 _³需要安卓版本 Android >= 7。_

-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。
+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。


 ## 自定义路径

-要使用指定的 _adb_ 二进制文件，可以设置环境变量 `ADB`：
+为了使用您想使用的 _adb_ ，您可以在环境变量
+`ADB`中设置它的路径：

    ADB=/path/to/adb scrcpy

-要覆盖 `scrcpy-server` 的路径，可以设置 `SCRCPY_SERVER_PATH`。
+如果需要覆盖`scrcpy-server`的路径，您可以在
+`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`] 复制一个 **str**ing； `scrcpy` 复制一个 **scr**een。
+[`strcpy`] 可以复制**str**ing； `scrcpy` 可以复制**scr**een。

 [gnirehtet]: https://github.com/Genymobile/gnirehtet
 [`strcpy`]: http://man7.org/linux/man-pages/man3/strcpy.3.html


-## 如何构建？
+## 如何编译？

-请查看[BUILD]。
+请查看[编译]。

-[BUILD]: BUILD.md
+[编译]: BUILD.md


 ## 常见问题

-请查看[FAQ](FAQ.md)。
+请查看[FAQ](FAQ.md).


 ## 开发者
--- a/README.zh-Hant.md
+++ b/README.zh-Hant.md
@ -80,7 +80,10 @@ 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:

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

 [Chocolatey] 上也可以下載:

--- a/app/meson.build
+++ b/app/meson.build
@ -6,6 +6,7 @@ src = [
    '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',
@ -32,11 +33,6 @@ else
    src += [ 'src/sys/unix/process.c' ]
 endif

-v4l2_support = host_machine.system() == 'linux'
-if v4l2_support
-    src += [ 'src/v4l2_sink.c' ]
-endif
-
 check_functions = [
    'strdup'
 ]
@ -53,10 +49,6 @@ if not get_option('crossbuild_windows')
        dependency('sdl2'),
    ]

-    if v4l2_support
-        dependencies += dependency('libavdevice')
-    endif
-
 else

    # cross-compile mingw32 build (from Linux to Windows)
@ -107,6 +99,9 @@ foreach f : check_functions
  endif
 endforeach

+# expose the build type
+conf.set('NDEBUG', get_option('buildtype') != 'debug')
+
 # the version, updated on release
 conf.set_quoted('SCRCPY_VERSION', meson.project_version())

@ -122,19 +117,29 @@ conf.set('PORTABLE', get_option('portable'))
 conf.set('DEFAULT_LOCAL_PORT_RANGE_FIRST', '27183')
 conf.set('DEFAULT_LOCAL_PORT_RANGE_LAST', '27199')

+# the default max video size for both dimensions, in pixels
+# overridden by option --max-size
+conf.set('DEFAULT_MAX_SIZE', '0')  # 0: unlimited
+
+# the default video orientation
+# natural device orientation is 0 and each increment adds 90 degrees
+# counterclockwise
+# overridden by option --lock-video-orientation
+conf.set('DEFAULT_LOCK_VIDEO_ORIENTATION', '-1')  # -1: unlocked
+
 # the default video bitrate, in bits/second
 # overridden by option --bit-rate
 conf.set('DEFAULT_BIT_RATE', '8000000')  # 8Mbps

+# enable High DPI support
+conf.set('HIDPI_SUPPORT', get_option('hidpi_support'))
+
 # run a server debugger and wait for a client to be attached
 conf.set('SERVER_DEBUGGER', get_option('server_debugger'))

 # select the debugger method ('old' for Android < 9, 'new' for Android >= 9)
 conf.set('SERVER_DEBUGGER_METHOD_NEW', get_option('server_debugger_method') == 'new')

-# enable V4L2 support (linux only)
-conf.set('HAVE_V4L2', v4l2_support)
-
 configure_file(configuration: conf, output: 'config.h')

 src_dir = include_directories('src')
--- a/app/scrcpy.1
+++ b/app/scrcpy.1
@ -83,12 +83,10 @@ Inject computer clipboard text as a sequence of key events on Ctrl+v (like MOD+S
 This is a workaround for some devices not behaving as expected when setting the device clipboard programmatically.

 .TP
-.BI "\-\-lock\-video\-orientation " [value]
-Lock video orientation to \fIvalue\fR. Possible values are "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.
+.BI "\-\-lock\-video\-orientation " value
+Lock video orientation to \fIvalue\fR. Possible values are -1 (unlocked), 0, 1, 2 and 3. Natural device orientation is 0, and each increment adds a 90 degrees otation counterclockwise.

-Default is "unlocked".
-
-Passing the option without argument is equivalent to passing "initial".
+Default is -1 (unlocked).

 .TP
 .BI "\-\-max\-fps " value
@ -133,7 +131,7 @@ 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/Download/".
+Default is "/sdcard/".

 .TP
 .BI "\-r, \-\-record " file
@ -157,6 +155,10 @@ Supported names are currently "direct3d", "opengl", "opengles2", "opengles", "me
 .UR https://wiki.libsdl.org/SDL_HINT_RENDER_DRIVER
 .UE

+.TP
+.B \-\-render\-expired\-frames
+By default, to minimize latency, scrcpy always renders the last available decoded frame, and drops any previous ones. This flag forces to render all frames, at a cost of a possible increased latency.
+
 .TP
 .BI "\-\-rotation " value
 Set the initial display rotation. Possibles values are 0, 1, 2 and 3. Each increment adds a 90 degrees rotation counterclockwise.
@ -186,10 +188,8 @@ Enable "show touches" on start, restore the initial value on exit.
 It only shows physical touches (not clicks from scrcpy).

 .TP
-.BI "\-\-v4l2-sink " /dev/videoN
-Output to v4l2loopback device.
-
-It requires to lock the video orientation (see --lock-video-orientation).
+.B \-v, \-\-version
+Print the version of scrcpy.

 .TP
 .BI "\-V, \-\-verbosity " value
@ -197,10 +197,6 @@ Set the log level ("debug", "info", "warn" or "error").

 Default is "info" for release builds, "debug" for debug builds.

-.TP
-.B \-v, \-\-version
-Print the version of scrcpy.
-
 .TP
 .B \-w, \-\-stay-awake
 Keep the device on while scrcpy is running, when the device is plugged in.
@ -217,25 +213,25 @@ Set a custom window title.
 .BI "\-\-window\-x " value
 Set the initial window horizontal position.

-Default is "auto".
+Default is "auto".\n

 .TP
 .BI "\-\-window\-y " value
 Set the initial window vertical position.

-Default is "auto".
+Default is "auto".\n

 .TP
 .BI "\-\-window\-width " value
 Set the initial window width.

-Default is 0 (automatic).
+Default is 0 (automatic).\n

 .TP
 .BI "\-\-window\-height " value
 Set the initial window height.

-Default is 0 (automatic).
+Default is 0 (automatic).\n

 .SH SHORTCUTS

--- a/app/src/android/input.h
+++ b/app/src/android/input.h
@ -21,7 +21,7 @@
 #define _ANDROID_INPUT_H

 /**
- * Meta key / modifier state.
+ * Meta key / modifer state.
 */
 enum android_metastate {
    /** No meta keys are pressed. */
--- a/app/src/cli.c
+++ b/app/src/cli.c
@ -10,9 +10,6 @@
 #include "util/log.h"
 #include "util/str_util.h"

-#define STR_IMPL_(x) #x
-#define STR(x) STR_IMPL_(x)
-
 void
 scrcpy_print_usage(const char *arg0) {
    fprintf(stderr,
@ -26,7 +23,7 @@ scrcpy_print_usage(const char *arg0) {
        "    -b, --bit-rate value\n"
        "        Encode the video at the given bit-rate, expressed in bits/s.\n"
        "        Unit suffixes are supported: 'K' (x1000) and 'M' (x1000000).\n"
-        "        Default is " STR(DEFAULT_BIT_RATE) ".\n"
+        "        Default is %d.\n"
        "\n"
        "    --codec-options key[:type]=value[,...]\n"
        "        Set a list of comma-separated key:type=value options for the\n"
@ -79,15 +76,12 @@ 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"
+        "        Possible values are -1 (unlocked), 0, 1, 2 and 3.\n"
        "        Natural device orientation is 0, and each increment adds a\n"
        "        90 degrees rotation counterclockwise.\n"
-        "        Default is \"unlocked\".\n"
-        "        Passing the option without argument is equivalent to passing\n"
-        "        \"initial\".\n"
+        "        Default is %d%s.\n"
        "\n"
        "    --max-fps value\n"
        "        Limit the frame rate of screen capture (officially supported\n"
@ -97,7 +91,7 @@ scrcpy_print_usage(const char *arg0) {
        "        Limit both the width and height of the video to value. The\n"
        "        other dimension is computed so that the device aspect-ratio\n"
        "        is preserved.\n"
-        "        Default is 0 (unlimited).\n"
+        "        Default is %d%s.\n"
        "\n"
        "    -n, --no-control\n"
        "        Disable device control (mirror the device in read-only).\n"
@ -116,8 +110,7 @@ scrcpy_print_usage(const char *arg0) {
        "\n"
        "    -p, --port port[:port]\n"
        "        Set the TCP port (range) used by the client to listen.\n"
-        "        Default is " STR(DEFAULT_LOCAL_PORT_RANGE_FIRST) ":"
-                              STR(DEFAULT_LOCAL_PORT_RANGE_LAST) ".\n"
+        "        Default is %d:%d.\n"
        "\n"
        "    --prefer-text\n"
        "        Inject alpha characters and space as text events instead of\n"
@ -129,7 +122,7 @@ 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/Download/\".\n"
+        "        Default is \"/sdcard/\".\n"
        "\n"
        "    -r, --record file.mp4\n"
        "        Record screen to file.\n"
@ -146,6 +139,12 @@ scrcpy_print_usage(const char *arg0) {
        "        \"opengles2\", \"opengles\", \"metal\" and \"software\".\n"
        "        <https://wiki.libsdl.org/SDL_HINT_RENDER_DRIVER>\n"
        "\n"
+        "    --render-expired-frames\n"
+        "        By default, to minimize latency, scrcpy always renders the\n"
+        "        last available decoded frame, and drops any previous ones.\n"
+        "        This flag forces to render all frames, at a cost of a\n"
+        "        possible increased latency.\n"
+        "\n"
        "    --rotation value\n"
        "        Set the initial display rotation.\n"
        "        Possibles values are 0, 1, 2 and 3. Each increment adds a 90\n"
@ -176,13 +175,9 @@ scrcpy_print_usage(const char *arg0) {
        "        on exit.\n"
        "        It only shows physical touches (not clicks from scrcpy).\n"
        "\n"
-#ifdef HAVE_V4L2
-        "    --v4l2-sink /dev/videoN\n"
-        "        Output to v4l2loopback device.\n"
-        "        It requires to lock the video orientation (see\n"
-        "        --lock-video-orientation).\n"
+        "    -v, --version\n"
+        "        Print the version of scrcpy.\n"
        "\n"
-#endif
        "    -V, --verbosity value\n"
        "        Set the log level (debug, info, warn or error).\n"
 #ifndef NDEBUG
@ -190,9 +185,6 @@ scrcpy_print_usage(const char *arg0) {
 #else
        "        Default is info.\n"
 #endif
-        "\n"
-        "    -v, --version\n"
-        "        Print the version of scrcpy.\n"
        "\n"
        "    -w, --stay-awake\n"
        "        Keep the device on while scrcpy is running, when the device\n"
@ -217,7 +209,7 @@ scrcpy_print_usage(const char *arg0) {
        "        Default is 0 (automatic).\n"
        "\n"
        "    --window-height value\n"
-        "        Set the initial window height.\n"
+        "        Set the initial window width.\n"
        "        Default is 0 (automatic).\n"
        "\n"
        "Shortcuts:\n"
@ -305,7 +297,12 @@ scrcpy_print_usage(const char *arg0) {
        "\n"
        "    Drag & drop APK file\n"
        "        Install APK from computer\n"
-        "\n", arg0);
+        "\n",
+        arg0,
+        DEFAULT_BIT_RATE,
+        DEFAULT_LOCK_VIDEO_ORIENTATION, DEFAULT_LOCK_VIDEO_ORIENTATION >= 0 ? "" : " (unlocked)",
+        DEFAULT_MAX_SIZE, DEFAULT_MAX_SIZE ? "" : " (unlimited)",
+        DEFAULT_LOCAL_PORT_RANGE_FIRST, DEFAULT_LOCAL_PORT_RANGE_LAST);
 }

 static bool
@ -393,27 +390,15 @@ parse_max_fps(const char *s, uint16_t *max_fps) {
 }

 static bool
-parse_lock_video_orientation(const char *s,
-                             enum sc_lock_video_orientation *lock_mode) {
-    if (!s || !strcmp(s, "initial")) {
-        // Without argument, lock the initial orientation
-        *lock_mode = SC_LOCK_VIDEO_ORIENTATION_INITIAL;
-        return true;
-    }
-
-    if (!strcmp(s, "unlocked")) {
-        *lock_mode = SC_LOCK_VIDEO_ORIENTATION_UNLOCKED;
-        return true;
-    }
-
+parse_lock_video_orientation(const char *s, int8_t *lock_video_orientation) {
    long value;
-    bool ok = parse_integer_arg(s, &value, false, 0, 3,
+    bool ok = parse_integer_arg(s, &value, false, -1, 3,
                                "lock video orientation");
    if (!ok) {
        return false;
    }

-    *lock_mode = (enum sc_lock_video_orientation) value;
+    *lock_video_orientation = (int8_t) value;
    return true;
 }

@ -682,8 +667,6 @@ guess_record_format(const char *filename) {
 #define OPT_FORWARD_ALL_CLICKS     1023
 #define OPT_LEGACY_PASTE           1024
 #define OPT_ENCODER_NAME           1025
-#define OPT_POWER_OFF_ON_CLOSE     1026
-#define OPT_V4L2_SINK              1027

 bool
 scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
@ -703,7 +686,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
        {"fullscreen",             no_argument,       NULL, 'f'},
        {"help",                   no_argument,       NULL, 'h'},
        {"legacy-paste",           no_argument,       NULL, OPT_LEGACY_PASTE},
-        {"lock-video-orientation", optional_argument, NULL,
+        {"lock-video-orientation", required_argument, NULL,
                                                  OPT_LOCK_VIDEO_ORIENTATION},
        {"max-fps",                required_argument, NULL, OPT_MAX_FPS},
        {"max-size",               required_argument, NULL, 'm'},
@ -725,9 +708,6 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
        {"show-touches",           no_argument,       NULL, 't'},
        {"stay-awake",             no_argument,       NULL, 'w'},
        {"turn-screen-off",        no_argument,       NULL, 'S'},
-#ifdef HAVE_V4L2
-        {"v4l2-sink",              required_argument, NULL, OPT_V4L2_SINK},
-#endif
        {"verbosity",              required_argument, NULL, 'V'},
        {"version",                no_argument,       NULL, 'v'},
        {"window-title",           required_argument, NULL, OPT_WINDOW_TITLE},
@ -737,8 +717,6 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
        {"window-height",          required_argument, NULL, OPT_WINDOW_HEIGHT},
        {"window-borderless",      no_argument,       NULL,
                                                  OPT_WINDOW_BORDERLESS},
-        {"power-off-on-close",     no_argument,       NULL,
-                                                  OPT_POWER_OFF_ON_CLOSE},
        {NULL,                     0,                 NULL, 0  },
    };

@ -791,8 +769,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
                }
                break;
            case OPT_LOCK_VIDEO_ORIENTATION:
-                if (!parse_lock_video_orientation(optarg,
-                        &opts->lock_video_orientation)) {
+                if (!parse_lock_video_orientation(optarg, &opts->lock_video_orientation)) {
                    return false;
                }
                break;
@ -837,8 +814,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
                opts->stay_awake = true;
                break;
            case OPT_RENDER_EXPIRED_FRAMES:
-                LOGW("Option --render-expired-frames has been removed. This "
-                     "flag has been ignored.");
+                opts->render_expired_frames = true;
                break;
            case OPT_WINDOW_TITLE:
                opts->window_title = optarg;
@ -909,39 +885,16 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
            case OPT_LEGACY_PASTE:
                opts->legacy_paste = true;
                break;
-            case OPT_POWER_OFF_ON_CLOSE:
-                opts->power_off_on_close = true;
-                break;
-#ifdef HAVE_V4L2
-            case OPT_V4L2_SINK:
-                opts->v4l2_device = optarg;
-                break;
-#endif
            default:
                // getopt prints the error message on stderr
                return false;
        }
    }

-#ifdef HAVE_V4L2
-    if (!opts->display && !opts->record_filename && !opts->v4l2_device) {
-        LOGE("-N/--no-display requires either screen recording (-r/--record)"
-             " or sink to v4l2loopback device (--v4l2-sink)");
-        return false;
-    }
-
-    if (opts->v4l2_device && opts->lock_video_orientation
-                             == SC_LOCK_VIDEO_ORIENTATION_UNLOCKED) {
-        LOGI("Video orientation is locked for v4l2 sink. "
-             "See --lock-video-orientation.");
-        opts->lock_video_orientation = SC_LOCK_VIDEO_ORIENTATION_INITIAL;
-    }
-#else
    if (!opts->display && !opts->record_filename) {
        LOGE("-N/--no-display requires screen recording (-r/--record)");
        return false;
    }
-#endif

    int index = optind;
    if (index < argc) {
--- a/app/src/common.h
+++ b/app/src/common.h
@ -8,7 +8,4 @@
 #define MIN(X,Y) (X) < (Y) ? (X) : (Y)
 #define MAX(X,Y) (X) > (Y) ? (X) : (Y)

-#define container_of(ptr, type, member) \
-    ((type *) (((char *) (ptr)) - offsetof(type, member)))
-
 #endif
--- a/app/src/compat.h
+++ b/app/src/compat.h
@ -8,9 +8,20 @@
 # define _DARWIN_C_SOURCE
 #endif

+#include <libavcodec/version.h>
 #include <libavformat/version.h>
 #include <SDL2/SDL_version.h>

+// In ffmpeg/doc/APIchanges:
+// 2016-04-11 - 6f69f7a / 9200514 - lavf 57.33.100 / 57.5.0 - avformat.h
+//   Add AVStream.codecpar, deprecate AVStream.codec.
+#if    (LIBAVFORMAT_VERSION_MICRO >= 100 /* FFmpeg */ && \
+        LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 33, 100)) \
+    || (LIBAVFORMAT_VERSION_MICRO < 100 && /* Libav */ \
+        LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 5, 0))
+# define SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
+#endif
+
 // In ffmpeg/doc/APIchanges:
 // 2018-02-06 - 0694d87024 - lavf 58.9.100 - avformat.h
 //   Deprecate use of av_register_input_format(), av_register_output_format(),
@ -22,16 +33,13 @@
 # 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
+// 2016-04-21 - 7fc329e - lavc 57.37.100 - avcodec.h
+//   Add a new audio/video encoding and decoding API with decoupled input
+//   and output -- avcodec_send_packet(), avcodec_receive_frame(),
+//   avcodec_send_frame() and avcodec_receive_packet().
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 37, 100)
+# define SCRCPY_LAVF_HAS_NEW_ENCODING_DECODING_API
 #endif

 #if SDL_VERSION_ATLEAST(2, 0, 5)
@ -48,7 +56,7 @@
 # define SCRCPY_SDL_HAS_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR
 #endif

-#ifndef HAVE_STRDUP
+#ifdef HAVE_STRDUP
 char *strdup(const char *s);
 #endif

--- a/app/src/control_msg.c
+++ b/app/src/control_msg.c
@ -67,9 +67,6 @@ control_msg_serialize(const struct control_msg *msg, unsigned char *buf) {
            buffer_write32be(&buf[17],
                             (uint32_t) msg->inject_scroll_event.vscroll);
            return 21;
-        case CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
-            buf[1] = msg->inject_keycode.action;
-            return 2;
        case CONTROL_MSG_TYPE_SET_CLIPBOARD: {
            buf[1] = !!msg->set_clipboard.paste;
            size_t len = write_string(msg->set_clipboard.text,
@ -80,9 +77,9 @@ control_msg_serialize(const struct control_msg *msg, unsigned char *buf) {
        case CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE:
            buf[1] = msg->set_screen_power_mode.mode;
            return 2;
+        case CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
        case CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL:
-        case CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL:
-        case CONTROL_MSG_TYPE_COLLAPSE_PANELS:
+        case CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL:
        case CONTROL_MSG_TYPE_GET_CLIPBOARD:
        case CONTROL_MSG_TYPE_ROTATE_DEVICE:
            // no additional data
--- a/app/src/control_msg.h
+++ b/app/src/control_msg.h
@ -27,8 +27,7 @@ enum control_msg_type {
    CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT,
    CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON,
    CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL,
-    CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL,
-    CONTROL_MSG_TYPE_COLLAPSE_PANELS,
+    CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL,
    CONTROL_MSG_TYPE_GET_CLIPBOARD,
    CONTROL_MSG_TYPE_SET_CLIPBOARD,
    CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE,
@ -65,10 +64,6 @@ struct control_msg {
            int32_t hscroll;
            int32_t vscroll;
        } inject_scroll_event;
-        struct {
-            enum android_keyevent_action action; // action for the BACK key
-            // screen may only be turned on on ACTION_DOWN
-        } back_or_screen_on;
        struct {
            char *text; // owned, to be freed by free()
            bool paste;
--- a/app/src/decoder.c
+++ b/app/src/decoder.c
@ -1,43 +1,38 @@
 #include "decoder.h"

 #include <libavformat/avformat.h>
+#include <libavutil/time.h>
+#include <SDL2/SDL_events.h>
+#include <unistd.h>

 #include "events.h"
+#include "recorder.h"
 #include "video_buffer.h"
-#include "trait/frame_sink.h"
+#include "util/buffer_util.h"
 #include "util/log.h"

-/** Downcast packet_sink to decoder */
-#define DOWNCAST(SINK) container_of(SINK, struct decoder, packet_sink)
-
+// set the decoded frame as ready for rendering, and notify
 static void
-decoder_close_first_sinks(struct decoder *decoder, unsigned count) {
-    while (count) {
-        struct sc_frame_sink *sink = decoder->sinks[--count];
-        sink->ops->close(sink);
+push_frame(struct decoder *decoder) {
+    bool previous_frame_skipped;
+    video_buffer_offer_decoded_frame(decoder->video_buffer,
+                                     &previous_frame_skipped);
+    if (previous_frame_skipped) {
+        // the previous EVENT_NEW_FRAME will consume this frame
+        return;
    }
+    static SDL_Event new_frame_event = {
+        .type = EVENT_NEW_FRAME,
+    };
+    SDL_PushEvent(&new_frame_event);
 }

-static inline void
-decoder_close_sinks(struct decoder *decoder) {
-    decoder_close_first_sinks(decoder, decoder->sink_count);
+void
+decoder_init(struct decoder *decoder, struct video_buffer *vb) {
+    decoder->video_buffer = vb;
 }

-static bool
-decoder_open_sinks(struct decoder *decoder) {
-    for (unsigned i = 0; i < decoder->sink_count; ++i) {
-        struct sc_frame_sink *sink = decoder->sinks[i];
-        if (!sink->ops->open(sink)) {
-            LOGE("Could not open frame sink %d", i);
-            decoder_close_first_sinks(decoder, i);
-            return false;
-        }
-    }
-
-    return true;
-}
-
-static bool
+bool
 decoder_open(struct decoder *decoder, const AVCodec *codec) {
    decoder->codec_ctx = avcodec_alloc_context3(codec);
    if (!decoder->codec_ctx) {
@ -51,110 +46,52 @@ decoder_open(struct decoder *decoder, const AVCodec *codec) {
        return false;
    }

-    decoder->frame = av_frame_alloc();
-    if (!decoder->frame) {
-        LOGE("Could not create decoder frame");
-        avcodec_close(decoder->codec_ctx);
-        avcodec_free_context(&decoder->codec_ctx);
-        return false;
-    }
-
-    if (!decoder_open_sinks(decoder)) {
-        LOGE("Could not open decoder sinks");
-        av_frame_free(&decoder->frame);
-        avcodec_close(decoder->codec_ctx);
-        avcodec_free_context(&decoder->codec_ctx);
-        return false;
-    }
-
    return true;
 }

-static void
+void
 decoder_close(struct decoder *decoder) {
-    decoder_close_sinks(decoder);
-    av_frame_free(&decoder->frame);
    avcodec_close(decoder->codec_ctx);
    avcodec_free_context(&decoder->codec_ctx);
 }

-static bool
-push_frame_to_sinks(struct decoder *decoder, const AVFrame *frame) {
-    for (unsigned i = 0; i < decoder->sink_count; ++i) {
-        struct sc_frame_sink *sink = decoder->sinks[i];
-        if (!sink->ops->push(sink, frame)) {
-            LOGE("Could not send frame to sink %d", i);
-            return false;
-        }
-    }
-
-    return true;
-}
-
-static bool
+bool
 decoder_push(struct decoder *decoder, const AVPacket *packet) {
-    bool is_config = packet->pts == AV_NOPTS_VALUE;
-    if (is_config) {
-        // nothing to do
-        return true;
-    }
-
-    int ret = avcodec_send_packet(decoder->codec_ctx, packet);
-    if (ret < 0 && ret != AVERROR(EAGAIN)) {
+// the new decoding/encoding API has been introduced by:
+// <http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=7fc329e2dd6226dfecaa4a1d7adf353bf2773726>
+#ifdef SCRCPY_LAVF_HAS_NEW_ENCODING_DECODING_API
+    int ret;
+    if ((ret = avcodec_send_packet(decoder->codec_ctx, packet)) < 0) {
        LOGE("Could not send video packet: %d", ret);
        return false;
    }
-    ret = avcodec_receive_frame(decoder->codec_ctx, decoder->frame);
+    ret = avcodec_receive_frame(decoder->codec_ctx,
+                                decoder->video_buffer->decoding_frame);
    if (!ret) {
        // a frame was received
-        bool ok = push_frame_to_sinks(decoder, decoder->frame);
-        // A frame lost should not make the whole pipeline fail. The error, if
-        // any, is already logged.
-        (void) ok;
-
-        av_frame_unref(decoder->frame);
+        push_frame(decoder);
    } else if (ret != AVERROR(EAGAIN)) {
        LOGE("Could not receive video frame: %d", ret);
        return false;
    }
+#else
+    int got_picture;
+    int len = avcodec_decode_video2(decoder->codec_ctx,
+                                    decoder->video_buffer->decoding_frame,
+                                    &got_picture,
+                                    packet);
+    if (len < 0) {
+        LOGE("Could not decode video packet: %d", len);
+        return false;
+    }
+    if (got_picture) {
+        push_frame(decoder);
+    }
+#endif
    return true;
 }

-static bool
-decoder_packet_sink_open(struct sc_packet_sink *sink, const AVCodec *codec) {
-    struct decoder *decoder = DOWNCAST(sink);
-    return decoder_open(decoder, codec);
-}
-
-static void
-decoder_packet_sink_close(struct sc_packet_sink *sink) {
-    struct decoder *decoder = DOWNCAST(sink);
-    decoder_close(decoder);
-}
-
-static bool
-decoder_packet_sink_push(struct sc_packet_sink *sink, const AVPacket *packet) {
-    struct decoder *decoder = DOWNCAST(sink);
-    return decoder_push(decoder, packet);
-}
-
 void
-decoder_init(struct decoder *decoder) {
-    decoder->sink_count = 0;
-
-    static const struct sc_packet_sink_ops ops = {
-        .open = decoder_packet_sink_open,
-        .close = decoder_packet_sink_close,
-        .push = decoder_packet_sink_push,
-    };
-
-    decoder->packet_sink.ops = &ops;
-}
-
-void
-decoder_add_sink(struct decoder *decoder, struct sc_frame_sink *sink) {
-    assert(decoder->sink_count < DECODER_MAX_SINKS);
-    assert(sink);
-    assert(sink->ops);
-    decoder->sinks[decoder->sink_count++] = sink;
+decoder_interrupt(struct decoder *decoder) {
+    video_buffer_interrupt(decoder->video_buffer);
 }
--- a/app/src/decoder.h
+++ b/app/src/decoder.h
@ -3,27 +3,29 @@

 #include "common.h"

-#include "trait/packet_sink.h"
-
 #include <stdbool.h>
 #include <libavformat/avformat.h>

-#define DECODER_MAX_SINKS 2
+struct video_buffer;

 struct decoder {
-    struct sc_packet_sink packet_sink; // packet sink trait
-
-    struct sc_frame_sink *sinks[DECODER_MAX_SINKS];
-    unsigned sink_count;
-
+    struct video_buffer *video_buffer;
    AVCodecContext *codec_ctx;
-    AVFrame *frame;
 };

 void
-decoder_init(struct decoder *decoder);
+decoder_init(struct decoder *decoder, struct video_buffer *vb);
+
+bool
+decoder_open(struct decoder *decoder, const AVCodec *codec);

 void
-decoder_add_sink(struct decoder *decoder, struct sc_frame_sink *sink);
+decoder_close(struct decoder *decoder);
+
+bool
+decoder_push(struct decoder *decoder, const AVPacket *packet);
+
+void
+decoder_interrupt(struct decoder *decoder);

 #endif
--- a/app/src/device.c
+++ b/app/src/device.c
@ -0,0 +1,23 @@
+#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;
+}
--- a/app/src/device.h
+++ b/app/src/device.h
@ -0,0 +1,17 @@
+#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
--- a/app/src/event_converter.c
+++ b/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 dependent flags
+    // fill dependant flags
    if (metastate & (AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_RIGHT_ON)) {
        metastate |= AMETA_SHIFT_ON;
    }
--- a/app/src/events.h
+++ b/app/src/events.h
@ -1,2 +1,3 @@
-#define EVENT_NEW_FRAME       SDL_USEREVENT
-#define EVENT_STREAM_STOPPED (SDL_USEREVENT + 1)
+#define EVENT_NEW_SESSION SDL_USEREVENT
+#define EVENT_NEW_FRAME (SDL_USEREVENT + 1)
+#define EVENT_STREAM_STOPPED (SDL_USEREVENT + 2)
--- a/app/src/file_handler.c
+++ b/app/src/file_handler.c
@ -6,7 +6,7 @@
 #include "adb.h"
 #include "util/log.h"

-#define DEFAULT_PUSH_TARGET "/sdcard/Download/"
+#define DEFAULT_PUSH_TARGET "/sdcard/"

 static void
 file_handler_request_destroy(struct file_handler_request *req) {
--- a/app/src/fps_counter.c
+++ b/app/src/fps_counter.c
@ -150,10 +150,6 @@ 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);
    }
 }
--- a/app/src/input_manager.c
+++ b/app/src/input_manager.c
@ -52,13 +52,9 @@ is_shortcut_mod(struct input_manager *im, uint16_t sdl_mod) {
 }

 void
-input_manager_init(struct input_manager *im, struct controller *controller,
-                   struct screen *screen,
-                   const struct scrcpy_options *options) {
-    im->controller = controller;
-    im->screen = screen;
-    im->repeat = 0;
-
+input_manager_init(struct input_manager *im,
+                   const struct scrcpy_options *options)
+{
    im->control = options->control;
    im->forward_key_repeat = options->forward_key_repeat;
    im->prefer_text = options->prefer_text;
@ -76,10 +72,6 @@ input_manager_init(struct input_manager *im, struct controller *controller,
    im->sdl_shortcut_mods.count = shortcut_mods->count;

    im->vfinger_down = false;
-
-    im->last_keycode = SDLK_UNKNOWN;
-    im->last_mod = 0;
-    im->key_repeat = 0;
 }

 static void
@ -154,25 +146,13 @@ action_cut(struct controller *controller, int actions) {
 }

 // turn the screen on if it was off, press BACK otherwise
-// If the screen is off, it is turned on only on ACTION_DOWN
 static void
-press_back_or_turn_screen_on(struct controller *controller, int actions) {
+press_back_or_turn_screen_on(struct controller *controller) {
    struct control_msg msg;
    msg.type = CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON;

-    if (actions & ACTION_DOWN) {
-        msg.back_or_screen_on.action = AKEY_EVENT_ACTION_DOWN;
-        if (!controller_push_msg(controller, &msg)) {
-            LOGW("Could not request 'press back or turn screen on'");
-            return;
-        }
-    }
-
-    if (actions & ACTION_UP) {
-        msg.back_or_screen_on.action = AKEY_EVENT_ACTION_UP;
-        if (!controller_push_msg(controller, &msg)) {
-            LOGW("Could not request 'press back or turn screen on'");
-        }
+    if (!controller_push_msg(controller, &msg)) {
+        LOGW("Could not request 'press back or turn screen on'");
    }
 }

@ -187,19 +167,9 @@ expand_notification_panel(struct controller *controller) {
 }

 static void
-expand_settings_panel(struct controller *controller) {
+collapse_notification_panel(struct controller *controller) {
    struct control_msg msg;
-    msg.type = CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL;
-
-    if (!controller_push_msg(controller, &msg)) {
-        LOGW("Could not request 'expand settings panel'");
-    }
-}
-
-static void
-collapse_panels(struct controller *controller) {
-    struct control_msg msg;
-    msg.type = CONTROL_MSG_TYPE_COLLAPSE_PANELS;
+    msg.type = CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL;

    if (!controller_push_msg(controller, &msg)) {
        LOGW("Could not request 'collapse notification panel'");
@ -316,7 +286,7 @@ rotate_client_right(struct screen *screen) {
    screen_set_rotation(screen, new_rotation);
 }

-static void
+void
 input_manager_process_text_input(struct input_manager *im,
                                 const SDL_TextInputEvent *event) {
    if (is_shortcut_mod(im, SDL_GetModState())) {
@ -396,33 +366,22 @@ convert_input_key(const SDL_KeyboardEvent *from, struct control_msg *to,
    return true;
 }

-static void
+void
 input_manager_process_key(struct input_manager *im,
                          const SDL_KeyboardEvent *event) {
    // control: indicates the state of the command-line option --no-control
    bool control = im->control;

+    bool smod = is_shortcut_mod(im, event->keysym.mod);
+
    struct controller *controller = im->controller;

    SDL_Keycode keycode = event->keysym.sym;
-    uint16_t mod = event->keysym.mod;
    bool down = event->type == SDL_KEYDOWN;
    bool ctrl = event->keysym.mod & KMOD_CTRL;
    bool shift = event->keysym.mod & KMOD_SHIFT;
    bool repeat = event->repeat;

-    bool smod = is_shortcut_mod(im, mod);
-
-    if (down && !repeat) {
-        if (keycode == im->last_keycode && mod == im->last_mod) {
-            ++im->key_repeat;
-        } else {
-            im->key_repeat = 0;
-            im->last_keycode = keycode;
-            im->last_mod = mod;
-        }
-    }
-
    // The shortcut modifier is pressed
    if (smod) {
        int action = down ? ACTION_DOWN : ACTION_UP;
@ -521,17 +480,17 @@ input_manager_process_key(struct input_manager *im,
                return;
            case SDLK_i:
                if (!shift && !repeat && down) {
-                    switch_fps_counter_state(&im->screen->fps_counter);
+                    struct fps_counter *fps_counter =
+                        im->video_buffer->fps_counter;
+                    switch_fps_counter_state(fps_counter);
                }
                return;
            case SDLK_n:
                if (control && !repeat && down) {
                    if (shift) {
-                        collapse_panels(controller);
-                    } else if (im->key_repeat == 0) {
-                        expand_notification_panel(controller);
+                        collapse_notification_panel(controller);
                    } else {
-                        expand_settings_panel(controller);
+                        expand_notification_panel(controller);
                    }
                }
                return;
@ -592,7 +551,7 @@ convert_mouse_motion(const SDL_MouseMotionEvent *from, struct screen *screen,
    return true;
 }

-static void
+void
 input_manager_process_mouse_motion(struct input_manager *im,
                                   const SDL_MouseMotionEvent *event) {
    if (!event->state) {
@ -646,7 +605,7 @@ convert_touch(const SDL_TouchFingerEvent *from, struct screen *screen,
    return true;
 }

-static void
+void
 input_manager_process_touch(struct input_manager *im,
                            const SDL_TouchFingerEvent *event) {
    struct control_msg msg;
@ -678,7 +637,7 @@ convert_mouse_button(const SDL_MouseButtonEvent *from, struct screen *screen,
    return true;
 }

-static void
+void
 input_manager_process_mouse_button(struct input_manager *im,
                                   const SDL_MouseButtonEvent *event) {
    bool control = im->control;
@ -689,27 +648,13 @@ input_manager_process_mouse_button(struct input_manager *im,
    }

    bool down = event->type == SDL_MOUSEBUTTONDOWN;
-    if (!im->forward_all_clicks) {
-        int action = down ? ACTION_DOWN : ACTION_UP;
-
-        if (control && event->button == SDL_BUTTON_X1) {
-            action_app_switch(im->controller, action);
-            return;
-        }
-        if (control && event->button == SDL_BUTTON_X2 && down) {
-            if (event->clicks < 2) {
-                expand_notification_panel(im->controller);
-            } else {
-                expand_settings_panel(im->controller);
-            }
-            return;
-        }
+    if (!im->forward_all_clicks && down) {
        if (control && event->button == SDL_BUTTON_RIGHT) {
-            press_back_or_turn_screen_on(im->controller, action);
+            press_back_or_turn_screen_on(im->controller);
            return;
        }
        if (control && event->button == SDL_BUTTON_MIDDLE) {
-            action_home(im->controller, action);
+            action_home(im->controller, ACTION_DOWN | ACTION_UP);
            return;
        }

@ -722,9 +667,7 @@ input_manager_process_mouse_button(struct input_manager *im,
            bool outside = x < r->x || x >= r->x + r->w
                        || y < r->y || y >= r->y + r->h;
            if (outside) {
-                if (down) {
-                    screen_resize_to_fit(im->screen);
-                }
+                screen_resize_to_fit(im->screen);
                return;
            }
        }
@ -793,7 +736,7 @@ convert_mouse_wheel(const SDL_MouseWheelEvent *from, struct screen *screen,
    return true;
 }

-static void
+void
 input_manager_process_mouse_wheel(struct input_manager *im,
                                  const SDL_MouseWheelEvent *event) {
    struct control_msg msg;
@ -803,46 +746,3 @@ input_manager_process_mouse_wheel(struct input_manager *im,
        }
    }
 }
-
-bool
-input_manager_handle_event(struct input_manager *im, SDL_Event *event) {
-    switch (event->type) {
-        case SDL_TEXTINPUT:
-            if (!im->control) {
-                return true;
-            }
-            input_manager_process_text_input(im, &event->text);
-            return true;
-        case SDL_KEYDOWN:
-        case SDL_KEYUP:
-            // some key events do not interact with the device, so process the
-            // event even if control is disabled
-            input_manager_process_key(im, &event->key);
-            return true;
-        case SDL_MOUSEMOTION:
-            if (!im->control) {
-                break;
-            }
-            input_manager_process_mouse_motion(im, &event->motion);
-            return true;
-        case SDL_MOUSEWHEEL:
-            if (!im->control) {
-                break;
-            }
-            input_manager_process_mouse_wheel(im, &event->wheel);
-            return true;
-        case SDL_MOUSEBUTTONDOWN:
-        case SDL_MOUSEBUTTONUP:
-            // some mouse events do not interact with the device, so process
-            // the event even if control is disabled
-            input_manager_process_mouse_button(im, &event->button);
-            return true;
-        case SDL_FINGERMOTION:
-        case SDL_FINGERDOWN:
-        case SDL_FINGERUP:
-            input_manager_process_touch(im, &event->tfinger);
-            return true;
-    }
-
-    return false;
-}
--- a/app/src/input_manager.h
+++ b/app/src/input_manager.h
@ -11,9 +11,11 @@
 #include "fps_counter.h"
 #include "scrcpy.h"
 #include "screen.h"
+#include "video_buffer.h"

 struct input_manager {
    struct controller *controller;
+    struct video_buffer *video_buffer;
    struct screen *screen;

    // SDL reports repeated events as a boolean, but Android expects the actual
@ -32,20 +34,34 @@ struct input_manager {
    } sdl_shortcut_mods;

    bool vfinger_down;
-
-    // Tracks the number of identical consecutive shortcut key down events.
-    // Not to be confused with event->repeat, which counts the number of
-    // system-generated repeated key presses.
-    unsigned key_repeat;
-    SDL_Keycode last_keycode;
-    uint16_t last_mod;
 };

 void
-input_manager_init(struct input_manager *im, struct controller *controller,
-                   struct screen *screen, const struct scrcpy_options *options);
+input_manager_init(struct input_manager *im,
+                   const struct scrcpy_options *options);

-bool
-input_manager_handle_event(struct input_manager *im, SDL_Event *event);
+void
+input_manager_process_text_input(struct input_manager *im,
+                                 const SDL_TextInputEvent *event);
+
+void
+input_manager_process_key(struct input_manager *im,
+                          const SDL_KeyboardEvent *event);
+
+void
+input_manager_process_mouse_motion(struct input_manager *im,
+                                   const SDL_MouseMotionEvent *event);
+
+void
+input_manager_process_touch(struct input_manager *im,
+                            const SDL_TouchFingerEvent *event);
+
+void
+input_manager_process_mouse_button(struct input_manager *im,
+                                   const SDL_MouseButtonEvent *event);
+
+void
+input_manager_process_mouse_wheel(struct input_manager *im,
+                                  const SDL_MouseWheelEvent *event);

 #endif
--- a/app/src/main.c
+++ b/app/src/main.c
@ -6,9 +6,6 @@
 #include <stdbool.h>
 #include <unistd.h>
 #include <libavformat/avformat.h>
-#ifdef HAVE_V4L2
-# include <libavdevice/avdevice.h>
-#endif
 #define SDL_MAIN_HANDLED // avoid link error on Linux Windows Subsystem
 #include <SDL2/SDL.h>

@ -31,11 +28,6 @@ print_version(void) {
    fprintf(stderr, " - libavutil %d.%d.%d\n", LIBAVUTIL_VERSION_MAJOR,
                                               LIBAVUTIL_VERSION_MINOR,
                                               LIBAVUTIL_VERSION_MICRO);
-#ifdef HAVE_V4L2
-    fprintf(stderr, " - libavdevice %d.%d.%d\n", LIBAVDEVICE_VERSION_MAJOR,
-                                                 LIBAVDEVICE_VERSION_MINOR,
-                                                 LIBAVDEVICE_VERSION_MICRO);
-#endif
 }

 static SDL_LogPriority
@ -98,12 +90,6 @@ main(int argc, char *argv[]) {
    av_register_all();
 #endif

-#ifdef HAVE_V4L2
-    if (args.opts.v4l2_device) {
-        avdevice_register_all();
-    }
-#endif
-
    if (avformat_network_init()) {
        return 1;
    }
--- a/app/src/recorder.c
+++ b/app/src/recorder.c
@ -4,10 +4,6 @@
 #include <libavutil/time.h>

 #include "util/log.h"
-#include "util/str_util.h"
-
-/** Downcast packet_sink to recorder */
-#define DOWNCAST(SINK) container_of(SINK, struct recorder, packet_sink)

 static const AVRational SCRCPY_TIME_BASE = {1, 1000000}; // timestamps in us

@ -23,8 +19,8 @@ find_muxer(const char *name) {
 #else
        oformat = av_oformat_next(oformat);
 #endif
-        // until null or containing the requested name
-    } while (oformat && !strlist_contains(oformat->name, ',', name));
+        // until null or with name "mp4"
+    } while (oformat && strcmp(oformat->name, name));
    return oformat;
 }

@ -35,14 +31,11 @@ record_packet_new(const AVPacket *packet) {
        return NULL;
    }

-    rec->packet = av_packet_alloc();
-    if (!rec->packet) {
-        free(rec);
-        return NULL;
-    }
+    // av_packet_ref() does not initialize all fields in old FFmpeg versions
+    // See <https://github.com/Genymobile/scrcpy/issues/707>
+    av_init_packet(&rec->packet);

-    if (av_packet_ref(rec->packet, packet)) {
-        av_packet_free(&rec->packet);
+    if (av_packet_ref(&rec->packet, packet)) {
        free(rec);
        return NULL;
    }
@ -51,8 +44,7 @@ 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);
+    av_packet_unref(&rec->packet);
    free(rec);
 }

@ -65,6 +57,50 @@ recorder_queue_clear(struct recorder_queue *queue) {
    }
 }

+bool
+recorder_init(struct recorder *recorder,
+              const char *filename,
+              enum sc_record_format format,
+              struct size declared_frame_size) {
+    recorder->filename = strdup(filename);
+    if (!recorder->filename) {
+        LOGE("Could not strdup filename");
+        return false;
+    }
+
+    bool ok = sc_mutex_init(&recorder->mutex);
+    if (!ok) {
+        LOGC("Could not create mutex");
+        free(recorder->filename);
+        return false;
+    }
+
+    ok = sc_cond_init(&recorder->queue_cond);
+    if (!ok) {
+        LOGC("Could not create cond");
+        sc_mutex_destroy(&recorder->mutex);
+        free(recorder->filename);
+        return false;
+    }
+
+    queue_init(&recorder->queue);
+    recorder->stopped = false;
+    recorder->failed = false;
+    recorder->format = format;
+    recorder->declared_frame_size = declared_frame_size;
+    recorder->header_written = false;
+    recorder->previous = NULL;
+
+    return true;
+}
+
+void
+recorder_destroy(struct recorder *recorder) {
+    sc_cond_destroy(&recorder->queue_cond);
+    sc_mutex_destroy(&recorder->mutex);
+    free(recorder->filename);
+}
+
 static const char *
 recorder_get_format_name(enum sc_record_format format) {
    switch (format) {
@ -74,6 +110,88 @@ recorder_get_format_name(enum sc_record_format format) {
    }
 }

+bool
+recorder_open(struct recorder *recorder, const AVCodec *input_codec) {
+    const char *format_name = recorder_get_format_name(recorder->format);
+    assert(format_name);
+    const AVOutputFormat *format = find_muxer(format_name);
+    if (!format) {
+        LOGE("Could not find muxer");
+        return false;
+    }
+
+    recorder->ctx = avformat_alloc_context();
+    if (!recorder->ctx) {
+        LOGE("Could not allocate output context");
+        return false;
+    }
+
+    // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
+    // returns (on purpose) a pointer-to-const, but AVFormatContext.oformat
+    // still expects a pointer-to-non-const (it has not be updated accordingly)
+    // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
+    recorder->ctx->oformat = (AVOutputFormat *) format;
+
+    av_dict_set(&recorder->ctx->metadata, "comment",
+                "Recorded by scrcpy " SCRCPY_VERSION, 0);
+
+    AVStream *ostream = avformat_new_stream(recorder->ctx, input_codec);
+    if (!ostream) {
+        avformat_free_context(recorder->ctx);
+        return false;
+    }
+
+#ifdef SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
+    ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+    ostream->codecpar->codec_id = input_codec->id;
+    ostream->codecpar->format = AV_PIX_FMT_YUV420P;
+    ostream->codecpar->width = recorder->declared_frame_size.width;
+    ostream->codecpar->height = recorder->declared_frame_size.height;
+#else
+    ostream->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+    ostream->codec->codec_id = input_codec->id;
+    ostream->codec->pix_fmt = AV_PIX_FMT_YUV420P;
+    ostream->codec->width = recorder->declared_frame_size.width;
+    ostream->codec->height = recorder->declared_frame_size.height;
+#endif
+
+    int ret = avio_open(&recorder->ctx->pb, recorder->filename,
+                        AVIO_FLAG_WRITE);
+    if (ret < 0) {
+        LOGE("Failed to open output file: %s", recorder->filename);
+        // ostream will be cleaned up during context cleaning
+        avformat_free_context(recorder->ctx);
+        return false;
+    }
+
+    LOGI("Recording started to %s file: %s", format_name, recorder->filename);
+
+    return true;
+}
+
+void
+recorder_close(struct recorder *recorder) {
+    if (recorder->header_written) {
+        int ret = av_write_trailer(recorder->ctx);
+        if (ret < 0) {
+            LOGE("Failed to write trailer to %s", recorder->filename);
+            recorder->failed = true;
+        }
+    } else {
+        // the recorded file is empty
+        recorder->failed = true;
+    }
+    avio_close(recorder->ctx->pb);
+    avformat_free_context(recorder->ctx);
+
+    if (recorder->failed) {
+        LOGE("Recording failed to %s", recorder->filename);
+    } else {
+        const char *format_name = recorder_get_format_name(recorder->format);
+        LOGI("Recording complete to %s file: %s", format_name, recorder->filename);
+    }
+}
+
 static bool
 recorder_write_header(struct recorder *recorder, const AVPacket *packet) {
    AVStream *ostream = recorder->ctx->streams[0];
@ -87,8 +205,13 @@ recorder_write_header(struct recorder *recorder, const AVPacket *packet) {
    // copy the first packet to the extra data
    memcpy(extradata, packet->data, packet->size);

+#ifdef SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
    ostream->codecpar->extradata = extradata;
    ostream->codecpar->extradata_size = packet->size;
+#else
+    ostream->codec->extradata = extradata;
+    ostream->codec->extradata_size = packet->size;
+#endif

    int ret = avformat_write_header(recorder->ctx, NULL);
    if (ret < 0) {
@ -105,7 +228,7 @@ recorder_rescale_packet(struct recorder *recorder, AVPacket *packet) {
    av_packet_rescale_ts(packet, SCRCPY_TIME_BASE, ostream->time_base);
 }

-static bool
+bool
 recorder_write(struct recorder *recorder, AVPacket *packet) {
    if (!recorder->header_written) {
        if (packet->pts != AV_NOPTS_VALUE) {
@ -148,8 +271,8 @@ run_recorder(void *data) {
            struct record_packet *last = recorder->previous;
            if (last) {
                // assign an arbitrary duration to the last packet
-                last->packet->duration = 100000;
-                bool ok = recorder_write(recorder, last->packet);
+                last->packet.duration = 100000;
+                bool ok = recorder_write(recorder, &last->packet);
                if (!ok) {
                    // failing to write the last frame is not very serious, no
                    // future frame may depend on it, so the resulting file
@ -176,14 +299,13 @@ run_recorder(void *data) {
        }

        // config packets have no PTS, we must ignore them
-        if (rec->packet->pts != AV_NOPTS_VALUE
-            && previous->packet->pts != AV_NOPTS_VALUE) {
+        if (rec->packet.pts != AV_NOPTS_VALUE
+            && previous->packet.pts != AV_NOPTS_VALUE) {
            // we now know the duration of the previous packet
-            previous->packet->duration =
-                rec->packet->pts - previous->packet->pts;
+            previous->packet.duration = rec->packet.pts - previous->packet.pts;
        }

-        bool ok = recorder_write(recorder, previous->packet);
+        bool ok = recorder_write(recorder, &previous->packet);
        record_packet_delete(previous);
        if (!ok) {
            LOGE("Could not record packet");
@ -195,26 +317,7 @@ run_recorder(void *data) {
            sc_mutex_unlock(&recorder->mutex);
            break;
        }
-    }

-    if (!recorder->failed) {
-        if (recorder->header_written) {
-            int ret = av_write_trailer(recorder->ctx);
-            if (ret < 0) {
-                LOGE("Failed to write trailer to %s", recorder->filename);
-                recorder->failed = true;
-            }
-        } else {
-            // the recorded file is empty
-            recorder->failed = true;
-        }
-    }
-
-    if (recorder->failed) {
-        LOGE("Recording failed to %s", recorder->filename);
-    } else {
-        const char *format_name = recorder_get_format_name(recorder->format);
-        LOGI("Recording complete to %s file: %s", format_name, recorder->filename);
    }

    LOGD("Recorder thread ended");
@ -222,108 +325,34 @@ run_recorder(void *data) {
    return 0;
 }

-static bool
-recorder_open(struct recorder *recorder, const AVCodec *input_codec) {
-    bool ok = sc_mutex_init(&recorder->mutex);
-    if (!ok) {
-        LOGC("Could not create mutex");
-        return false;
-    }
-
-    ok = sc_cond_init(&recorder->queue_cond);
-    if (!ok) {
-        LOGC("Could not create cond");
-        goto error_mutex_destroy;
-    }
-
-    queue_init(&recorder->queue);
-    recorder->stopped = false;
-    recorder->failed = false;
-    recorder->header_written = false;
-    recorder->previous = NULL;
-
-    const char *format_name = recorder_get_format_name(recorder->format);
-    assert(format_name);
-    const AVOutputFormat *format = find_muxer(format_name);
-    if (!format) {
-        LOGE("Could not find muxer");
-        goto error_cond_destroy;
-    }
-
-    recorder->ctx = avformat_alloc_context();
-    if (!recorder->ctx) {
-        LOGE("Could not allocate output context");
-        goto error_cond_destroy;
-    }
-
-    // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
-    // returns (on purpose) a pointer-to-const, but AVFormatContext.oformat
-    // still expects a pointer-to-non-const (it has not be updated accordingly)
-    // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
-    recorder->ctx->oformat = (AVOutputFormat *) format;
-
-    av_dict_set(&recorder->ctx->metadata, "comment",
-                "Recorded by scrcpy " SCRCPY_VERSION, 0);
-
-    AVStream *ostream = avformat_new_stream(recorder->ctx, input_codec);
-    if (!ostream) {
-        goto error_avformat_free_context;
-    }
-
-    ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
-    ostream->codecpar->codec_id = input_codec->id;
-    ostream->codecpar->format = AV_PIX_FMT_YUV420P;
-    ostream->codecpar->width = recorder->declared_frame_size.width;
-    ostream->codecpar->height = recorder->declared_frame_size.height;
-
-    int ret = avio_open(&recorder->ctx->pb, recorder->filename,
-                        AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        LOGE("Failed to open output file: %s", recorder->filename);
-        // ostream will be cleaned up during context cleaning
-        goto error_avformat_free_context;
-    }
-
+bool
+recorder_start(struct recorder *recorder) {
    LOGD("Starting recorder thread");
-    ok = sc_thread_create(&recorder->thread, run_recorder, "recorder",
+
+    bool ok = sc_thread_create(&recorder->thread, run_recorder, "recorder",
                               recorder);
    if (!ok) {
        LOGC("Could not start recorder thread");
-        goto error_avio_close;
+        return false;
    }

-    LOGI("Recording started to %s file: %s", format_name, recorder->filename);
-
    return true;
-
-error_avio_close:
-    avio_close(recorder->ctx->pb);
-error_avformat_free_context:
-    avformat_free_context(recorder->ctx);
-error_cond_destroy:
-    sc_cond_destroy(&recorder->queue_cond);
-error_mutex_destroy:
-    sc_mutex_destroy(&recorder->mutex);
-
-    return false;
 }

-static void
-recorder_close(struct recorder *recorder) {
+void
+recorder_stop(struct recorder *recorder) {
    sc_mutex_lock(&recorder->mutex);
    recorder->stopped = true;
    sc_cond_signal(&recorder->queue_cond);
    sc_mutex_unlock(&recorder->mutex);
-
-    sc_thread_join(&recorder->thread, NULL);
-
-    avio_close(recorder->ctx->pb);
-    avformat_free_context(recorder->ctx);
-    sc_cond_destroy(&recorder->queue_cond);
-    sc_mutex_destroy(&recorder->mutex);
 }

-static bool
+void
+recorder_join(struct recorder *recorder) {
+    sc_thread_join(&recorder->thread, NULL);
+}
+
+bool
 recorder_push(struct recorder *recorder, const AVPacket *packet) {
    sc_mutex_lock(&recorder->mutex);
    assert(!recorder->stopped);
@ -347,51 +376,3 @@ recorder_push(struct recorder *recorder, const AVPacket *packet) {
    sc_mutex_unlock(&recorder->mutex);
    return true;
 }
-
-static bool
-recorder_packet_sink_open(struct sc_packet_sink *sink, const AVCodec *codec) {
-    struct recorder *recorder = DOWNCAST(sink);
-    return recorder_open(recorder, codec);
-}
-
-static void
-recorder_packet_sink_close(struct sc_packet_sink *sink) {
-    struct recorder *recorder = DOWNCAST(sink);
-    recorder_close(recorder);
-}
-
-static bool
-recorder_packet_sink_push(struct sc_packet_sink *sink, const AVPacket *packet) {
-    struct recorder *recorder = DOWNCAST(sink);
-    return recorder_push(recorder, packet);
-}
-
-bool
-recorder_init(struct recorder *recorder,
-              const char *filename,
-              enum sc_record_format format,
-              struct size declared_frame_size) {
-    recorder->filename = strdup(filename);
-    if (!recorder->filename) {
-        LOGE("Could not strdup filename");
-        return false;
-    }
-
-    recorder->format = format;
-    recorder->declared_frame_size = declared_frame_size;
-
-    static const struct sc_packet_sink_ops ops = {
-        .open = recorder_packet_sink_open,
-        .close = recorder_packet_sink_close,
-        .push = recorder_packet_sink_push,
-    };
-
-    recorder->packet_sink.ops = &ops;
-
-    return true;
-}
-
-void
-recorder_destroy(struct recorder *recorder) {
-    free(recorder->filename);
-}
--- a/app/src/recorder.h
+++ b/app/src/recorder.h
@ -8,20 +8,17 @@

 #include "coords.h"
 #include "scrcpy.h"
-#include "trait/packet_sink.h"
 #include "util/queue.h"
 #include "util/thread.h"

 struct record_packet {
-    AVPacket *packet;
+    AVPacket packet;
    struct record_packet *next;
 };

 struct recorder_queue QUEUE(struct record_packet);

 struct recorder {
-    struct sc_packet_sink packet_sink; // packet sink trait
-
    char *filename;
    enum sc_record_format format;
    AVFormatContext *ctx;
@ -31,7 +28,7 @@ struct recorder {
    sc_thread thread;
    sc_mutex mutex;
    sc_cond queue_cond;
-    bool stopped; // set on recorder_close()
+    bool stopped; // set on recorder_stop() by the stream reader
    bool failed; // set on packet write failure
    struct recorder_queue queue;

@ -49,4 +46,22 @@ recorder_init(struct recorder *recorder, const char *filename,
 void
 recorder_destroy(struct recorder *recorder);

+bool
+recorder_open(struct recorder *recorder, const AVCodec *input_codec);
+
+void
+recorder_close(struct recorder *recorder);
+
+bool
+recorder_start(struct recorder *recorder);
+
+void
+recorder_stop(struct recorder *recorder);
+
+void
+recorder_join(struct recorder *recorder);
+
+bool
+recorder_push(struct recorder *recorder, const AVPacket *packet);
+
 #endif
--- a/app/src/scrcpy.c
+++ b/app/src/scrcpy.c
@ -15,32 +15,42 @@

 #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"
 #include "server.h"
 #include "stream.h"
 #include "tiny_xpm.h"
+#include "video_buffer.h"
 #include "util/log.h"
 #include "util/net.h"
-#ifdef HAVE_V4L2
-# include "v4l2_sink.h"
-#endif

-struct scrcpy {
-    struct server server;
-    struct screen screen;
-    struct stream stream;
-    struct decoder decoder;
-    struct recorder recorder;
-#ifdef HAVE_V4L2
-    struct sc_v4l2_sink v4l2_sink;
-#endif
-    struct controller controller;
-    struct file_handler file_handler;
-    struct input_manager input_manager;
+static struct server server;
+static struct screen screen = SCREEN_INITIALIZER;
+static struct fps_counter fps_counter;
+static struct video_buffer video_buffer;
+static struct stream stream;
+static struct decoder decoder;
+static struct recorder recorder;
+static struct controller controller;
+static struct file_handler file_handler;
+
+static struct input_manager input_manager = {
+    .controller = &controller,
+    .video_buffer = &video_buffer,
+    .screen = &screen,
+    .repeat = 0,
+
+    // initialized later
+    .prefer_text = false,
+    .sdl_shortcut_mods = {
+        .data = {0},
+        .count = 0,
+    },
 };

 #ifdef _WIN32
@ -118,6 +128,30 @@ sdl_init_and_configure(bool display, const char *render_driver,
    return true;
 }

+
+#if defined(__APPLE__) || defined(__WINDOWS__)
+# define CONTINUOUS_RESIZING_WORKAROUND
+#endif
+
+#ifdef CONTINUOUS_RESIZING_WORKAROUND
+// On Windows and MacOS, resizing blocks the event loop, so resizing events are
+// not triggered. As a workaround, handle them in an event handler.
+//
+// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
+// <https://stackoverflow.com/a/40693139/1987178>
+static int
+event_watcher(void *data, SDL_Event *event) {
+    (void) data;
+    if (event->type == SDL_WINDOWEVENT
+            && event->window.event == SDL_WINDOWEVENT_RESIZED) {
+        // In practice, it seems to always be called from the same thread in
+        // that specific case. Anyway, it's just a workaround.
+        screen_render(&screen, true);
+    }
+    return 0;
+}
+#endif
+
 static bool
 is_apk(const char *file) {
    const char *ext = strrchr(file, '.');
@ -131,8 +165,7 @@ enum event_result {
 };

 static enum event_result
-handle_event(struct scrcpy *s, const struct scrcpy_options *options,
-             SDL_Event *event) {
+handle_event(SDL_Event *event, const struct scrcpy_options *options) {
    switch (event->type) {
        case EVENT_STREAM_STOPPED:
            LOGD("Video stream stopped");
@ -140,6 +173,54 @@ handle_event(struct scrcpy *s, const struct scrcpy_options *options,
        case SDL_QUIT:
            LOGD("User requested to quit");
            return EVENT_RESULT_STOPPED_BY_USER;
+        case EVENT_NEW_FRAME:
+            if (!screen.has_frame) {
+                screen.has_frame = true;
+                // this is the very first frame, show the window
+                screen_show_window(&screen);
+            }
+            if (!screen_update_frame(&screen, &video_buffer)) {
+                return EVENT_RESULT_CONTINUE;
+            }
+            break;
+        case SDL_WINDOWEVENT:
+            screen_handle_window_event(&screen, &event->window);
+            break;
+        case SDL_TEXTINPUT:
+            if (!options->control) {
+                break;
+            }
+            input_manager_process_text_input(&input_manager, &event->text);
+            break;
+        case SDL_KEYDOWN:
+        case SDL_KEYUP:
+            // some key events do not interact with the device, so process the
+            // event even if control is disabled
+            input_manager_process_key(&input_manager, &event->key);
+            break;
+        case SDL_MOUSEMOTION:
+            if (!options->control) {
+                break;
+            }
+            input_manager_process_mouse_motion(&input_manager, &event->motion);
+            break;
+        case SDL_MOUSEWHEEL:
+            if (!options->control) {
+                break;
+            }
+            input_manager_process_mouse_wheel(&input_manager, &event->wheel);
+            break;
+        case SDL_MOUSEBUTTONDOWN:
+        case SDL_MOUSEBUTTONUP:
+            // some mouse events do not interact with the device, so process
+            // the event even if control is disabled
+            input_manager_process_mouse_button(&input_manager, &event->button);
+            break;
+        case SDL_FINGERMOTION:
+        case SDL_FINGERDOWN:
+        case SDL_FINGERUP:
+            input_manager_process_touch(&input_manager, &event->tfinger);
+            break;
        case SDL_DROPFILE: {
            if (!options->control) {
                break;
@ -157,28 +238,23 @@ handle_event(struct scrcpy *s, const struct scrcpy_options *options,
            } else {
                action = ACTION_PUSH_FILE;
            }
-            file_handler_request(&s->file_handler, action, file);
-            goto end;
+            file_handler_request(&file_handler, action, file);
+            break;
        }
    }
-
-    bool consumed = screen_handle_event(&s->screen, event);
-    if (consumed) {
-        goto end;
-    }
-
-    consumed = input_manager_handle_event(&s->input_manager, event);
-    (void) consumed;
-
-end:
    return EVENT_RESULT_CONTINUE;
 }

 static bool
-event_loop(struct scrcpy *s, const struct scrcpy_options *options) {
+event_loop(const struct scrcpy_options *options) {
+#ifdef CONTINUOUS_RESIZING_WORKAROUND
+    if (options->display) {
+        SDL_AddEventWatch(event_watcher, NULL);
+    }
+#endif
    SDL_Event event;
    while (SDL_WaitEvent(&event)) {
-        enum event_result result = handle_event(s, options, &event);
+        enum event_result result = handle_event(&event, options);
        switch (result) {
            case EVENT_RESULT_STOPPED_BY_USER:
                return true;
@ -228,41 +304,25 @@ av_log_callback(void *avcl, int level, const char *fmt, va_list 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) {
-    static struct scrcpy scrcpy;
-    struct scrcpy *s = &scrcpy;
-
-    if (!server_init(&s->server)) {
+    if (!server_init(&server)) {
        return false;
    }

    bool ret = false;

    bool server_started = false;
+    bool fps_counter_initialized = false;
+    bool video_buffer_initialized = false;
    bool file_handler_initialized = false;
    bool recorder_initialized = false;
-#ifdef HAVE_V4L2
-    bool v4l2_sink_initialized = false;
-#endif
    bool stream_started = false;
    bool controller_initialized = false;
    bool controller_started = false;
-    bool screen_initialized = false;

    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,
@ -277,9 +337,8 @@ scrcpy(const struct scrcpy_options *options) {
        .codec_options = options->codec_options,
        .encoder_name = options->encoder_name,
        .force_adb_forward = options->force_adb_forward,
-        .power_off_on_close = options->power_off_on_close,
    };
-    if (!server_start(&s->server, &params)) {
+    if (!server_start(&server, options->serial, &params)) {
        goto end;
    }

@ -290,66 +349,76 @@ scrcpy(const struct scrcpy_options *options) {
        goto end;
    }

-    char device_name[DEVICE_NAME_FIELD_LENGTH];
-    struct size frame_size;
-
-    if (!server_connect_to(&s->server, device_name, &frame_size)) {
+    if (!server_connect_to(&server)) {
        goto end;
    }

-    if (options->display && options->control) {
-        if (!file_handler_init(&s->file_handler, s->server.serial,
-                               options->push_target)) {
-            goto end;
-        }
-        file_handler_initialized = true;
+    char device_name[DEVICE_NAME_FIELD_LENGTH];
+    struct size frame_size;
+
+    // screenrecord does not send frames when the screen content does not
+    // change therefore, we transmit the screen size before the video stream,
+    // to be able to init the window immediately
+    if (!device_read_info(server.video_socket, device_name, &frame_size)) {
+        goto end;
    }

    struct decoder *dec = NULL;
-    bool needs_decoder = options->display;
-#ifdef HAVE_V4L2
-    needs_decoder |= !!options->v4l2_device;
-#endif
-    if (needs_decoder) {
-        decoder_init(&s->decoder);
-        dec = &s->decoder;
+    if (options->display) {
+        if (!fps_counter_init(&fps_counter)) {
+            goto end;
+        }
+        fps_counter_initialized = true;
+
+        if (!video_buffer_init(&video_buffer, &fps_counter,
+                               options->render_expired_frames)) {
+            goto end;
+        }
+        video_buffer_initialized = true;
+
+        if (options->control) {
+            if (!file_handler_init(&file_handler, server.serial,
+                                   options->push_target)) {
+                goto end;
+            }
+            file_handler_initialized = true;
+        }
+
+        decoder_init(&decoder, &video_buffer);
+        dec = &decoder;
    }

    struct recorder *rec = NULL;
    if (record) {
-        if (!recorder_init(&s->recorder,
+        if (!recorder_init(&recorder,
                           options->record_filename,
                           options->record_format,
                           frame_size)) {
            goto end;
        }
-        rec = &s->recorder;
+        rec = &recorder;
        recorder_initialized = true;
    }

    av_log_set_callback(av_log_callback);

-    const struct stream_callbacks stream_cbs = {
-        .on_eos = stream_on_eos,
-    };
-    stream_init(&s->stream, s->server.video_socket, &stream_cbs, NULL);
+    stream_init(&stream, server.video_socket, dec, rec);

-    if (dec) {
-        stream_add_sink(&s->stream, &dec->packet_sink);
-    }
-
-    if (rec) {
-        stream_add_sink(&s->stream, &rec->packet_sink);
+    // now we consumed the header values, the socket receives the video stream
+    // start the stream
+    if (!stream_start(&stream)) {
+        goto end;
    }
+    stream_started = true;

    if (options->display) {
        if (options->control) {
-            if (!controller_init(&s->controller, s->server.control_socket)) {
+            if (!controller_init(&controller, server.control_socket)) {
                goto end;
            }
            controller_initialized = true;

-            if (!controller_start(&s->controller)) {
+            if (!controller_start(&controller)) {
                goto end;
            }
            controller_started = true;
@ -358,120 +427,89 @@ scrcpy(const struct scrcpy_options *options) {
        const char *window_title =
            options->window_title ? options->window_title : device_name;

-        struct screen_params screen_params = {
-            .window_title = window_title,
-            .frame_size = frame_size,
-            .always_on_top = options->always_on_top,
-            .window_x = options->window_x,
-            .window_y = options->window_y,
-            .window_width = options->window_width,
-            .window_height = options->window_height,
-            .window_borderless = options->window_borderless,
-            .rotation = options->rotation,
-            .mipmaps = options->mipmaps,
-            .fullscreen = options->fullscreen,
-        };
-
-        if (!screen_init(&s->screen, &screen_params)) {
+        if (!screen_init_rendering(&screen, window_title, frame_size,
+                                   options->always_on_top, options->window_x,
+                                   options->window_y, options->window_width,
+                                   options->window_height,
+                                   options->window_borderless,
+                                   options->rotation, options->mipmaps)) {
            goto end;
        }
-        screen_initialized = true;
-
-        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(&s->controller, &msg)) {
+            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(&s->v4l2_sink, options->v4l2_device, frame_size)) {
-            goto end;
+        if (options->fullscreen) {
+            screen_switch_fullscreen(&screen);
        }
-
-        decoder_add_sink(&s->decoder, &s->v4l2_sink.frame_sink);
-
-        v4l2_sink_initialized = true;
    }
-#endif

-    // now we consumed the header values, the socket receives the video stream
-    // start the stream
-    if (!stream_start(&s->stream)) {
-        goto end;
-    }
-    stream_started = true;
+    input_manager_init(&input_manager, options);

-    input_manager_init(&s->input_manager, &s->controller, &s->screen, options);
-
-    ret = event_loop(s, options);
+    ret = event_loop(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(&s->screen);
+    screen_destroy(&screen);

 end:
-    // The stream is not stopped explicitly, because it will stop by itself on
-    // end-of-stream
+    // stop stream and controller so that they don't continue once their socket
+    // is shutdown
+    if (stream_started) {
+        stream_stop(&stream);
+    }
    if (controller_started) {
-        controller_stop(&s->controller);
+        controller_stop(&controller);
    }
    if (file_handler_initialized) {
-        file_handler_stop(&s->file_handler);
+        file_handler_stop(&file_handler);
    }
-    if (screen_initialized) {
-        screen_interrupt(&s->screen);
+    if (fps_counter_initialized) {
+        fps_counter_interrupt(&fps_counter);
    }

    if (server_started) {
        // shutdown the sockets and kill the server
-        server_stop(&s->server);
+        server_stop(&server);
    }

    // now that the sockets are shutdown, the stream and controller are
    // interrupted, we can join them
    if (stream_started) {
-        stream_join(&s->stream);
+        stream_join(&stream);
    }
-
-#ifdef HAVE_V4L2
-    if (v4l2_sink_initialized) {
-        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_join(&s->screen);
-        screen_destroy(&s->screen);
-    }
-
    if (controller_started) {
-        controller_join(&s->controller);
+        controller_join(&controller);
    }
    if (controller_initialized) {
-        controller_destroy(&s->controller);
+        controller_destroy(&controller);
    }

    if (recorder_initialized) {
-        recorder_destroy(&s->recorder);
+        recorder_destroy(&recorder);
    }

    if (file_handler_initialized) {
-        file_handler_join(&s->file_handler);
-        file_handler_destroy(&s->file_handler);
+        file_handler_join(&file_handler);
+        file_handler_destroy(&file_handler);
    }

-    server_destroy(&s->server);
+    if (video_buffer_initialized) {
+        video_buffer_destroy(&video_buffer);
+    }
+
+    if (fps_counter_initialized) {
+        fps_counter_join(&fps_counter);
+        fps_counter_destroy(&fps_counter);
+    }
+
+    server_destroy(&server);

    return ret;
 }
--- a/app/src/scrcpy.h
+++ b/app/src/scrcpy.h
@ -20,16 +20,6 @@ enum sc_record_format {
    SC_RECORD_FORMAT_MKV,
 };

-enum sc_lock_video_orientation {
-    SC_LOCK_VIDEO_ORIENTATION_UNLOCKED = -1,
-    // lock the current orientation when scrcpy starts
-    SC_LOCK_VIDEO_ORIENTATION_INITIAL = -2,
-    SC_LOCK_VIDEO_ORIENTATION_0 = 0,
-    SC_LOCK_VIDEO_ORIENTATION_1,
-    SC_LOCK_VIDEO_ORIENTATION_2,
-    SC_LOCK_VIDEO_ORIENTATION_3,
-};
-
 #define SC_MAX_SHORTCUT_MODS 8

 enum sc_shortcut_mod {
@ -62,7 +52,6 @@ struct scrcpy_options {
    const char *render_driver;
    const char *codec_options;
    const char *encoder_name;
-    const char *v4l2_device;
    enum sc_log_level log_level;
    enum sc_record_format record_format;
    struct sc_port_range port_range;
@ -70,7 +59,7 @@ struct scrcpy_options {
    uint16_t max_size;
    uint32_t bit_rate;
    uint16_t max_fps;
-    enum sc_lock_video_orientation lock_video_orientation;
+    int8_t lock_video_orientation;
    uint8_t rotation;
    int16_t window_x; // SC_WINDOW_POSITION_UNDEFINED for "auto"
    int16_t window_y; // SC_WINDOW_POSITION_UNDEFINED for "auto"
@ -83,6 +72,7 @@ struct scrcpy_options {
    bool control;
    bool display;
    bool turn_screen_off;
+    bool render_expired_frames;
    bool prefer_text;
    bool window_borderless;
    bool mipmaps;
@ -92,7 +82,6 @@ struct scrcpy_options {
    bool forward_key_repeat;
    bool forward_all_clicks;
    bool legacy_paste;
-    bool power_off_on_close;
 };

 #define SCRCPY_OPTIONS_DEFAULT { \
@ -104,7 +93,6 @@ struct scrcpy_options {
    .render_driver = NULL, \
    .codec_options = NULL, \
    .encoder_name = NULL, \
-    .v4l2_device = NULL, \
    .log_level = SC_LOG_LEVEL_INFO, \
    .record_format = SC_RECORD_FORMAT_AUTO, \
    .port_range = { \
@ -115,10 +103,10 @@ struct scrcpy_options {
        .data = {SC_MOD_LALT, SC_MOD_LSUPER}, \
        .count = 2, \
    }, \
-    .max_size = 0, \
+    .max_size = DEFAULT_MAX_SIZE, \
    .bit_rate = DEFAULT_BIT_RATE, \
    .max_fps = 0, \
-    .lock_video_orientation = SC_LOCK_VIDEO_ORIENTATION_UNLOCKED, \
+    .lock_video_orientation = DEFAULT_LOCK_VIDEO_ORIENTATION, \
    .rotation = 0, \
    .window_x = SC_WINDOW_POSITION_UNDEFINED, \
    .window_y = SC_WINDOW_POSITION_UNDEFINED, \
@ -131,6 +119,7 @@ struct scrcpy_options {
    .control = true, \
    .display = true, \
    .turn_screen_off = false, \
+    .render_expired_frames = false, \
    .prefer_text = false, \
    .window_borderless = false, \
    .mipmaps = true, \
@ -140,7 +129,6 @@ struct scrcpy_options {
    .forward_key_repeat = true, \
    .forward_all_clicks = false, \
    .legacy_paste = false, \
-    .power_off_on_close = false, \
 }

 bool
--- a/app/src/screen.c
+++ b/app/src/screen.c
@ -4,7 +4,6 @@
 #include <string.h>
 #include <SDL2/SDL.h>

-#include "events.h"
 #include "icon.xpm"
 #include "scrcpy.h"
 #include "tiny_xpm.h"
@ -13,8 +12,6 @@

 #define DISPLAY_MARGINS 96

-#define DOWNCAST(SINK) container_of(SINK, struct screen, frame_sink)
-
 static inline struct size
 get_rotated_size(struct size size, int rotation) {
    struct size rotated_size;
@ -41,18 +38,6 @@ 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) {
@ -134,6 +119,13 @@ 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
@ -198,6 +190,11 @@ screen_update_content_rect(struct screen *screen) {
    }
 }

+void
+screen_init(struct screen *screen) {
+    *screen = (struct screen) SCREEN_INITIALIZER;
+}
+
 static inline SDL_Texture *
 create_texture(struct screen *screen) {
    SDL_Renderer *renderer = screen->renderer;
@ -225,112 +222,27 @@ create_texture(struct screen *screen) {
    return texture;
 }

-#if defined(__APPLE__) || defined(__WINDOWS__)
-# define CONTINUOUS_RESIZING_WORKAROUND
-#endif
-
-#ifdef CONTINUOUS_RESIZING_WORKAROUND
-// On Windows and MacOS, resizing blocks the event loop, so resizing events are
-// not triggered. As a workaround, handle them in an event handler.
-//
-// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
-// <https://stackoverflow.com/a/40693139/1987178>
-static int
-event_watcher(void *data, SDL_Event *event) {
-    struct screen *screen = data;
-    if (event->type == SDL_WINDOWEVENT
-            && event->window.event == SDL_WINDOWEVENT_RESIZED) {
-        // In practice, it seems to always be called from the same thread in
-        // that specific case. Anyway, it's just a workaround.
-        screen_render(screen, true);
-    }
-    return 0;
-}
-#endif
-
-static bool
-screen_frame_sink_open(struct sc_frame_sink *sink) {
-    struct screen *screen = DOWNCAST(sink);
-    (void) screen;
-#ifndef NDEBUG
-    screen->open = true;
-#endif
-
-    // nothing to do, the screen is already open on the main thread
-    return true;
-}
-
-static void
-screen_frame_sink_close(struct sc_frame_sink *sink) {
-    struct screen *screen = DOWNCAST(sink);
-    (void) screen;
-#ifndef NDEBUG
-    screen->open = false;
-#endif
-
-    // nothing to do, the screen lifecycle is not managed by the frame producer
-}
-
-static bool
-screen_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
-    struct screen *screen = DOWNCAST(sink);
-
-    bool previous_frame_skipped;
-    bool ok = video_buffer_push(&screen->vb, frame, &previous_frame_skipped);
-    if (!ok) {
-        return false;
-    }
-
-    if (previous_frame_skipped) {
-        fps_counter_add_skipped_frame(&screen->fps_counter);
-        // The EVENT_NEW_FRAME triggered for the previous frame will consume
-        // this new frame instead
-    } else {
-        static SDL_Event new_frame_event = {
-            .type = EVENT_NEW_FRAME,
-        };
-
-        // Post the event on the UI thread
-        SDL_PushEvent(&new_frame_event);
-    }
-
-    return true;
-}
-
 bool
-screen_init(struct screen *screen, const struct screen_params *params) {
-    screen->resize_pending = false;
-    screen->has_frame = false;
-    screen->fullscreen = false;
-    screen->maximized = false;
-
-    bool ok = video_buffer_init(&screen->vb);
-    if (!ok) {
-        LOGE("Could not initialize video buffer");
-        return false;
+screen_init_rendering(struct screen *screen, const char *window_title,
+                      struct size frame_size, bool always_on_top,
+                      int16_t window_x, int16_t window_y, uint16_t window_width,
+                      uint16_t window_height, bool window_borderless,
+                      uint8_t rotation, bool mipmaps) {
+    screen->frame_size = frame_size;
+    screen->rotation = rotation;
+    if (rotation) {
+        LOGI("Initial display rotation set to %u", rotation);
    }
-
-    if (!fps_counter_init(&screen->fps_counter)) {
-        LOGE("Could not initialize FPS counter");
-        goto error_destroy_video_buffer;
-    }
-
-    screen->frame_size = params->frame_size;
-    screen->rotation = params->rotation;
-    if (screen->rotation) {
-        LOGI("Initial display rotation set to %u", screen->rotation);
-    }
-    struct size content_size =
-        get_rotated_size(screen->frame_size, screen->rotation);
+    struct size content_size = get_rotated_size(frame_size, screen->rotation);
    screen->content_size = content_size;

-    struct size window_size = get_initial_optimal_size(content_size,
-                                                       params->window_width,
-                                                       params->window_height);
-    uint32_t window_flags = SDL_WINDOW_HIDDEN
-                          | SDL_WINDOW_RESIZABLE
-                          | SDL_WINDOW_ALLOW_HIGHDPI;
-    if (params->always_on_top) {
+    struct size window_size =
+        get_initial_optimal_size(content_size, window_width, window_height);
+    uint32_t window_flags = SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE;
+#ifdef HIDPI_SUPPORT
+    window_flags |= SDL_WINDOW_ALLOW_HIGHDPI;
+#endif
+    if (always_on_top) {
 #ifdef SCRCPY_SDL_HAS_WINDOW_ALWAYS_ON_TOP
        window_flags |= SDL_WINDOW_ALWAYS_ON_TOP;
 #else
@ -338,27 +250,28 @@ screen_init(struct screen *screen, const struct screen_params *params) {
             "(compile with SDL >= 2.0.5 to enable it)");
 #endif
    }
-    if (params->window_borderless) {
+    if (window_borderless) {
        window_flags |= SDL_WINDOW_BORDERLESS;
    }

-    int x = params->window_x != SC_WINDOW_POSITION_UNDEFINED
-          ? params->window_x : (int) SDL_WINDOWPOS_UNDEFINED;
-    int y = params->window_y != SC_WINDOW_POSITION_UNDEFINED
-          ? params->window_y : (int) SDL_WINDOWPOS_UNDEFINED;
-    screen->window = SDL_CreateWindow(params->window_title, x, y,
+    int x = window_x != SC_WINDOW_POSITION_UNDEFINED
+          ? window_x : (int) SDL_WINDOWPOS_UNDEFINED;
+    int y = window_y != SC_WINDOW_POSITION_UNDEFINED
+          ? window_y : (int) SDL_WINDOWPOS_UNDEFINED;
+    screen->window = SDL_CreateWindow(window_title, x, y,
                                      window_size.width, window_size.height,
                                      window_flags);
    if (!screen->window) {
        LOGC("Could not create window: %s", SDL_GetError());
-        goto error_destroy_fps_counter;
+        return false;
    }

    screen->renderer = SDL_CreateRenderer(screen->window, -1,
                                          SDL_RENDERER_ACCELERATED);
    if (!screen->renderer) {
        LOGC("Could not create renderer: %s", SDL_GetError());
-        goto error_destroy_window;
+        screen_destroy(screen);
+        return false;
    }

    SDL_RendererInfo renderer_info;
@ -366,17 +279,15 @@ screen_init(struct screen *screen, const struct screen_params *params) {
    const char *renderer_name = r ? NULL : renderer_info.name;
    LOGI("Renderer: %s", renderer_name ? renderer_name : "(unknown)");

-    screen->mipmaps = false;
-
    // starts with "opengl"
-    bool use_opengl = renderer_name && !strncmp(renderer_name, "opengl", 6);
-    if (use_opengl) {
+    screen->use_opengl = renderer_name && !strncmp(renderer_name, "opengl", 6);
+    if (screen->use_opengl) {
        struct sc_opengl *gl = &screen->gl;
        sc_opengl_init(gl);

        LOGI("OpenGL version: %s", gl->version);

-        if (params->mipmaps) {
+        if (mipmaps) {
            bool supports_mipmaps =
                sc_opengl_version_at_least(gl, 3, 0, /* OpenGL 3.0+ */
                                               2, 0  /* OpenGL ES 2.0+ */);
@ -390,7 +301,7 @@ screen_init(struct screen *screen, const struct screen_params *params) {
        } else {
            LOGI("Trilinear filtering disabled");
        }
-    } else if (params->mipmaps) {
+    } else {
        LOGD("Trilinear filtering disabled (not an OpenGL renderer)");
    }

@ -402,18 +313,13 @@ screen_init(struct screen *screen, const struct screen_params *params) {
        LOGW("Could not load icon");
    }

-    LOGI("Initial texture: %" PRIu16 "x%" PRIu16, params->frame_size.width,
-                                                  params->frame_size.height);
+    LOGI("Initial texture: %" PRIu16 "x%" PRIu16, frame_size.width,
+                                                  frame_size.height);
    screen->texture = create_texture(screen);
    if (!screen->texture) {
        LOGC("Could not create texture: %s", SDL_GetError());
-        goto error_destroy_renderer;
-    }
-
-    screen->frame = av_frame_alloc();
-    if (!screen->frame) {
-        LOGC("Could not create screen frame");
-        goto error_destroy_texture;
+        screen_destroy(screen);
+        return false;
    }

    // Reset the window size to trigger a SIZE_CHANGED event, to workaround
@ -423,73 +329,25 @@ screen_init(struct screen *screen, const struct screen_params *params) {

    screen_update_content_rect(screen);

-    if (params->fullscreen) {
-        screen_switch_fullscreen(screen);
-    }
-
-#ifdef CONTINUOUS_RESIZING_WORKAROUND
-    SDL_AddEventWatch(event_watcher, screen);
-#endif
-
-    static const struct sc_frame_sink_ops ops = {
-        .open = screen_frame_sink_open,
-        .close = screen_frame_sink_close,
-        .push = screen_frame_sink_push,
-    };
-
-    screen->frame_sink.ops = &ops;
-
-#ifndef NDEBUG
-    screen->open = false;
-#endif
-
    return true;
-
-error_destroy_texture:
-    SDL_DestroyTexture(screen->texture);
-error_destroy_renderer:
-    SDL_DestroyRenderer(screen->renderer);
-error_destroy_window:
-    SDL_DestroyWindow(screen->window);
-error_destroy_fps_counter:
-    fps_counter_destroy(&screen->fps_counter);
-error_destroy_video_buffer:
-    video_buffer_destroy(&screen->vb);
-
-    return false;
 }

-static void
+void
 screen_show_window(struct screen *screen) {
    SDL_ShowWindow(screen->window);
 }

-void
-screen_hide_window(struct screen *screen) {
-    SDL_HideWindow(screen->window);
-}
-
-void
-screen_interrupt(struct screen *screen) {
-    fps_counter_interrupt(&screen->fps_counter);
-}
-
-void
-screen_join(struct screen *screen) {
-    fps_counter_join(&screen->fps_counter);
-}
-
 void
 screen_destroy(struct screen *screen) {
-#ifndef NDEBUG
-    assert(!screen->open);
-#endif
-    av_frame_free(&screen->frame);
-    SDL_DestroyTexture(screen->texture);
-    SDL_DestroyRenderer(screen->renderer);
-    SDL_DestroyWindow(screen->window);
-    fps_counter_destroy(&screen->fps_counter);
-    video_buffer_destroy(&screen->vb);
+    if (screen->texture) {
+        SDL_DestroyTexture(screen->texture);
+    }
+    if (screen->renderer) {
+        SDL_DestroyRenderer(screen->renderer);
+    }
+    if (screen->window) {
+        SDL_DestroyWindow(screen->window);
+    }
 }

 static void
@ -586,22 +444,19 @@ update_texture(struct screen *screen, const AVFrame *frame) {
            frame->data[2], frame->linesize[2]);

    if (screen->mipmaps) {
+        assert(screen->use_opengl);
        SDL_GL_BindTexture(screen->texture, NULL, NULL);
        screen->gl.GenerateMipmap(GL_TEXTURE_2D);
        SDL_GL_UnbindTexture(screen->texture);
    }
 }

-static bool
-screen_update_frame(struct screen *screen) {
-    av_frame_unref(screen->frame);
-    video_buffer_consume(&screen->vb, screen->frame);
-    AVFrame *frame = screen->frame;
-
-    fps_counter_add_rendered_frame(&screen->fps_counter);
-
+bool
+screen_update_frame(struct screen *screen, struct video_buffer *vb) {
+    const AVFrame *frame = video_buffer_take_rendering_frame(vb);
    struct size new_frame_size = {frame->width, frame->height};
    if (!prepare_for_frame(screen, new_frame_size)) {
+        sc_mutex_unlock(&vb->mutex);
        return false;
    }
    update_texture(screen, frame);
@ -667,20 +522,9 @@ 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_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;
-
+        get_optimal_window_size(screen, screen->content_size);
    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);
 }
@ -702,53 +546,31 @@ screen_resize_to_pixel_perfect(struct screen *screen) {
                                            content_size.height);
 }

-bool
-screen_handle_event(struct screen *screen, SDL_Event *event) {
-    switch (event->type) {
-        case EVENT_NEW_FRAME:
-            if (!screen->has_frame) {
-                screen->has_frame = true;
-                // this is the very first frame, show the window
-                screen_show_window(screen);
+void
+screen_handle_window_event(struct screen *screen,
+                           const SDL_WindowEvent *event) {
+    switch (event->event) {
+        case SDL_WINDOWEVENT_EXPOSED:
+            screen_render(screen, true);
+            break;
+        case SDL_WINDOWEVENT_SIZE_CHANGED:
+            screen_render(screen, true);
+            break;
+        case SDL_WINDOWEVENT_MAXIMIZED:
+            screen->maximized = true;
+            break;
+        case SDL_WINDOWEVENT_RESTORED:
+            if (screen->fullscreen) {
+                // On Windows, in maximized+fullscreen, disabling fullscreen
+                // mode unexpectedly triggers the "restored" then "maximized"
+                // events, leaving the window in a weird state (maximized
+                // according to the events, but not maximized visually).
+                break;
            }
-            bool ok = screen_update_frame(screen);
-            if (!ok) {
-                LOGW("Frame update failed\n");
-            }
-            return true;
-        case SDL_WINDOWEVENT:
-            if (!screen->has_frame) {
-                // Do nothing
-                return true;
-            }
-            switch (event->window.event) {
-                case SDL_WINDOWEVENT_EXPOSED:
-                    screen_render(screen, true);
-                    break;
-                case SDL_WINDOWEVENT_SIZE_CHANGED:
-                    screen_render(screen, true);
-                    break;
-                case SDL_WINDOWEVENT_MAXIMIZED:
-                    screen->maximized = true;
-                    break;
-                case SDL_WINDOWEVENT_RESTORED:
-                    if (screen->fullscreen) {
-                        // On Windows, in maximized+fullscreen, disabling
-                        // fullscreen mode unexpectedly triggers the "restored"
-                        // then "maximized" events, leaving the window in a
-                        // weird state (maximized according to the events, but
-                        // not maximized visually).
-                        break;
-                    }
-                    screen->maximized = false;
-                    apply_pending_resize(screen);
-                    screen_render(screen, true);
-                    break;
-            }
-            return true;
+            screen->maximized = false;
+            apply_pending_resize(screen);
+            break;
    }
-
-    return false;
 }

 struct point
--- a/app/src/screen.h
+++ b/app/src/screen.h
@ -9,22 +9,14 @@

 #include "coords.h"
 #include "opengl.h"
-#include "trait/frame_sink.h"
-#include "video_buffer.h"
+
+struct video_buffer;

 struct screen {
-    struct sc_frame_sink frame_sink; // frame sink trait
-
-#ifndef NDEBUG
-    bool open; // track the open/close state to assert correct behavior
-#endif
-
-    struct video_buffer vb;
-    struct fps_counter fps_counter;
-
    SDL_Window *window;
    SDL_Renderer *renderer;
    SDL_Texture *texture;
+    bool use_opengl;
    struct sc_opengl gl;
    struct size frame_size;
    struct size content_size; // rotated frame_size
@ -41,52 +33,67 @@ struct screen {
    bool has_frame;
    bool fullscreen;
    bool maximized;
+    bool no_window;
    bool mipmaps;
-
-    AVFrame *frame;
 };

-struct screen_params {
-    const char *window_title;
-    struct size frame_size;
-    bool always_on_top;
+#define SCREEN_INITIALIZER { \
+    .window = NULL, \
+    .renderer = NULL, \
+    .texture = NULL, \
+    .use_opengl = false, \
+    .gl = {0}, \
+    .frame_size = { \
+        .width = 0, \
+        .height = 0, \
+    }, \
+    .content_size = { \
+        .width = 0, \
+        .height = 0, \
+    }, \
+    .resize_pending = false, \
+    .windowed_content_size = { \
+        .width = 0, \
+        .height = 0, \
+    }, \
+    .rotation = 0, \
+    .rect = { \
+        .x = 0, \
+        .y = 0, \
+        .w = 0, \
+        .h = 0, \
+    }, \
+    .has_frame = false, \
+    .fullscreen = false, \
+    .maximized = false, \
+    .no_window = false, \
+    .mipmaps = false, \
+}

-    int16_t window_x;
-    int16_t window_y;
-    uint16_t window_width;  // accepts SC_WINDOW_POSITION_UNDEFINED
-    uint16_t window_height; // accepts SC_WINDOW_POSITION_UNDEFINED
-
-    bool window_borderless;
-
-    uint8_t rotation;
-    bool mipmaps;
-
-    bool fullscreen;
-};
+// initialize default values
+void
+screen_init(struct screen *screen);

 // initialize screen, create window, renderer and texture (window is hidden)
+// window_x and window_y accept SC_WINDOW_POSITION_UNDEFINED
 bool
-screen_init(struct screen *screen, const struct screen_params *params);
+screen_init_rendering(struct screen *screen, const char *window_title,
+                      struct size frame_size, bool always_on_top,
+                      int16_t window_x, int16_t window_y, uint16_t window_width,
+                      uint16_t window_height, bool window_borderless,
+                      uint8_t rotation, bool mipmaps);

-// request to interrupt any inner thread
-// must be called before screen_join()
+// show the window
 void
-screen_interrupt(struct screen *screen);
-
-// join any inner thread
-void
-screen_join(struct screen *screen);
+screen_show_window(struct screen *screen);

 // destroy window, renderer and texture (if any)
 void
 screen_destroy(struct screen *screen);

-// hide the window
-//
-// It is used to hide the window immediately on closing without waiting for
-// screen_destroy()
-void
-screen_hide_window(struct screen *screen);
+// resize if necessary and write the rendered frame into the texture
+bool
+screen_update_frame(struct screen *screen, struct video_buffer *vb);

 // render the texture to the renderer
 //
@ -111,9 +118,9 @@ screen_resize_to_pixel_perfect(struct screen *screen);
 void
 screen_set_rotation(struct screen *screen, unsigned rotation);

-// react to SDL events
-bool
-screen_handle_event(struct screen *screen, SDL_Event *event);
+// react to window events
+void
+screen_handle_window_event(struct screen *screen, const SDL_WindowEvent *event);

 // convert point from window coordinates to frame coordinates
 // x and y are expressed in pixels
--- a/app/src/server.c
+++ b/app/src/server.c
@ -58,7 +58,7 @@ get_server_path(void) {
        LOGE("Could not get executable path, "
             "using " SERVER_FILENAME " from current directory");
        // not found, use current directory
-        return strdup(SERVER_FILENAME);
+        return SERVER_FILENAME;
    }
    char *dir = dirname(executable_path);
    size_t dirlen = strlen(dir);
@ -70,7 +70,7 @@ get_server_path(void) {
        LOGE("Could not alloc server path string, "
             "using " SERVER_FILENAME " from current directory");
        free(executable_path);
-        return strdup(SERVER_FILENAME);
+        return SERVER_FILENAME;
    }

    memcpy(server_path, dir, dirlen);
@ -293,7 +293,6 @@ execute_server(struct server *server, const struct server_params *params) {
        params->stay_awake ? "true" : "false",
        params->codec_options ? params->codec_options : "-",
        params->encoder_name ? params->encoder_name : "-",
-        params->power_off_on_close ? "true" : "false",
    };
 #ifdef SERVER_DEBUGGER
    LOGI("Server debugger waiting for a client on device port "
@ -306,7 +305,7 @@ execute_server(struct server *server, const struct server_params *params) {
    //     Port: 5005
    // Then click on "Debug"
 #endif
-    return adb_execute(server->serial, cmd, ARRAY_LEN(cmd));
+    return adb_execute(server->serial, cmd, sizeof(cmd) / sizeof(cmd[0]));
 }

 static socket_t
@ -376,6 +375,8 @@ server_init(struct server *server) {
    server->video_socket = INVALID_SOCKET;
    server->control_socket = INVALID_SOCKET;

+    server->port_range.first = 0;
+    server->port_range.last = 0;
    server->local_port = 0;

    server->tunnel_enabled = false;
@ -407,28 +408,30 @@ run_wait_server(void *data) {
 }

 bool
-server_start(struct server *server, const struct server_params *params) {
-    if (params->serial) {
-        server->serial = strdup(params->serial);
+server_start(struct server *server, const char *serial,
+             const struct server_params *params) {
+    server->port_range = params->port_range;
+
+    if (serial) {
+        server->serial = strdup(serial);
        if (!server->serial) {
            return false;
        }
    }

-    if (!push_server(params->serial)) {
-        /* server->serial will be freed on server_destroy() */
-        return false;
+    if (!push_server(serial)) {
+        goto error1;
    }

    if (!enable_tunnel_any_port(server, params->port_range,
                                params->force_adb_forward)) {
-        return false;
+        goto error1;
    }

    // server will connect to our server socket
    server->process = execute_server(server, params);
    if (server->process == PROCESS_NONE) {
-        goto error;
+        goto error2;
    }

    // If the server process dies before connecting to the server socket, then
@ -442,14 +445,14 @@ server_start(struct server *server, const struct server_params *params) {
    if (!ok) {
        process_terminate(server->process);
        process_wait(server->process, true); // ignore exit code
-        goto error;
+        goto error2;
    }

    server->tunnel_enabled = true;

    return true;

-error:
+error2:
    if (!server->tunnel_forward) {
        bool was_closed =
            atomic_flag_test_and_set(&server->server_socket_closed);
@ -459,32 +462,13 @@ error:
        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, char *device_name, struct size *size) {
+server_connect_to(struct server *server) {
    if (!server->tunnel_forward) {
        server->video_socket = net_accept(server->server_socket);
        if (server->video_socket == INVALID_SOCKET) {
@ -524,8 +508,7 @@ server_connect_to(struct server *server, char *device_name, struct size *size) {
    disable_tunnel(server); // ignore failure
    server->tunnel_enabled = false;

-    // The sockets will be closed on stop if device_read_info() fails
-    return device_read_info(server->video_socket, device_name, size);
+    return true;
 }

 void
--- a/app/src/server.h
+++ b/app/src/server.h
@ -8,7 +8,6 @@
 #include <stdint.h>

 #include "adb.h"
-#include "coords.h"
 #include "scrcpy.h"
 #include "util/log.h"
 #include "util/net.h"
@ -27,13 +26,13 @@ struct server {
    socket_t server_socket; // only used if !tunnel_forward
    socket_t video_socket;
    socket_t control_socket;
+    struct sc_port_range port_range;
    uint16_t local_port; // selected from port_range
    bool tunnel_enabled;
    bool tunnel_forward; // use "adb forward" instead of "adb reverse"
 };

 struct server_params {
-    const char *serial;
    enum sc_log_level log_level;
    const char *crop;
    const char *codec_options;
@ -48,7 +47,6 @@ struct server_params {
    bool show_touches;
    bool stay_awake;
    bool force_adb_forward;
-    bool power_off_on_close;
 };

 // init default values
@ -57,13 +55,12 @@ server_init(struct server *server);

 // push, enable tunnel et start the server
 bool
-server_start(struct server *server, const struct server_params *params);
+server_start(struct server *server, const char *serial,
+             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, char *device_name, struct size *size);
+server_connect_to(struct server *server);

 // disconnect and kill the server process
 void
--- a/app/src/stream.c
+++ b/app/src/stream.c
@ -3,6 +3,7 @@
 #include <assert.h>
 #include <libavformat/avformat.h>
 #include <libavutil/time.h>
+#include <SDL2/SDL_events.h>
 #include <unistd.h>

 #include "decoder.h"
@ -57,12 +58,33 @@ 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) {
-        struct sc_packet_sink *sink = stream->sinks[i];
-        if (!sink->ops->push(sink, packet)) {
-            LOGE("Could not send config packet to sink %d", i);
+process_config_packet(struct stream *stream, AVPacket *packet) {
+    if (stream->recorder && !recorder_push(stream->recorder, packet)) {
+        LOGE("Could not send config packet to recorder");
+        return false;
+    }
+    return true;
+}
+
+static bool
+process_frame(struct stream *stream, AVPacket *packet) {
+    if (stream->decoder && !decoder_push(stream->decoder, packet)) {
+        return false;
+    }
+
+    if (stream->recorder) {
+        packet->dts = packet->pts;
+
+        if (!recorder_push(stream->recorder, packet)) {
+            LOGE("Could not send packet to recorder");
            return false;
        }
    }
@ -89,11 +111,9 @@ stream_parse(struct stream *stream, AVPacket *packet) {
        packet->flags |= AV_PKT_FLAG_KEY;
    }

-    packet->dts = packet->pts;
-
-    bool ok = push_packet_to_sinks(stream, packet);
+    bool ok = process_frame(stream, packet);
    if (!ok) {
-        LOGE("Could not process packet");
+        LOGE("Could not process frame");
        return false;
    }

@ -104,44 +124,39 @@ 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 immediately (it contains no
+    // A config packet must not be decoded immetiately (it contains no
    // frame); instead, it must be concatenated with the future data packet.
-    if (stream->pending || is_config) {
+    if (stream->has_pending || is_config) {
        size_t offset;
-        if (stream->pending) {
-            offset = stream->pending->size;
-            if (av_grow_packet(stream->pending, packet->size)) {
+        if (stream->has_pending) {
+            offset = stream->pending.size;
+            if (av_grow_packet(&stream->pending, packet->size)) {
                LOGE("Could not grow packet");
                return false;
            }
        } else {
            offset = 0;
-            stream->pending = av_packet_alloc();
-            if (!stream->pending) {
-                LOGE("Could not allocate packet");
-                return false;
-            }
-            if (av_new_packet(stream->pending, packet->size)) {
+            if (av_new_packet(&stream->pending, packet->size)) {
                LOGE("Could not create packet");
-                av_packet_free(&stream->pending);
                return false;
            }
+            stream->has_pending = true;
        }

-        memcpy(stream->pending->data + offset, packet->data, packet->size);
+        memcpy(stream->pending.data + offset, packet->data, packet->size);

        if (!is_config) {
            // prepare the concat packet to send to the decoder
-            stream->pending->pts = packet->pts;
-            stream->pending->dts = packet->dts;
-            stream->pending->flags = packet->flags;
-            packet = stream->pending;
+            stream->pending.pts = packet->pts;
+            stream->pending.dts = packet->dts;
+            stream->pending.flags = packet->flags;
+            packet = &stream->pending;
        }
    }

    if (is_config) {
        // config packet
-        bool ok = push_packet_to_sinks(stream, packet);
+        bool ok = process_config_packet(stream, packet);
        if (!ok) {
            return false;
        }
@ -149,10 +164,10 @@ stream_push_packet(struct stream *stream, AVPacket *packet) {
        // data packet
        bool ok = stream_parse(stream, packet);

-        if (stream->pending) {
+        if (stream->has_pending) {
            // the pending packet must be discarded (consumed or error)
-            av_packet_unref(stream->pending);
-            av_packet_free(&stream->pending);
+            stream->has_pending = false;
+            av_packet_unref(&stream->pending);
        }

        if (!ok) {
@ -162,33 +177,6 @@ stream_push_packet(struct stream *stream, AVPacket *packet) {
    return true;
 }

-static void
-stream_close_first_sinks(struct stream *stream, unsigned count) {
-    while (count) {
-        struct sc_packet_sink *sink = stream->sinks[--count];
-        sink->ops->close(sink);
-    }
-}
-
-static inline void
-stream_close_sinks(struct stream *stream) {
-    stream_close_first_sinks(stream, stream->sink_count);
-}
-
-static bool
-stream_open_sinks(struct stream *stream, const AVCodec *codec) {
-    for (unsigned i = 0; i < stream->sink_count; ++i) {
-        struct sc_packet_sink *sink = stream->sinks[i];
-        if (!sink->ops->open(sink, codec)) {
-            LOGE("Could not open packet sink %d", i);
-            stream_close_first_sinks(stream, i);
-            return false;
-        }
-    }
-
-    return true;
-}
-
 static int
 run_stream(void *data) {
    struct stream *stream = data;
@ -205,36 +193,43 @@ run_stream(void *data) {
        goto end;
    }

-    if (!stream_open_sinks(stream, codec)) {
-        LOGE("Could not open stream sinks");
+    if (stream->decoder && !decoder_open(stream->decoder, codec)) {
+        LOGE("Could not open decoder");
        goto finally_free_codec_ctx;
    }

+    if (stream->recorder) {
+        if (!recorder_open(stream->recorder, codec)) {
+            LOGE("Could not open recorder");
+            goto finally_close_decoder;
+        }
+
+        if (!recorder_start(stream->recorder)) {
+            LOGE("Could not start recorder");
+            goto finally_close_recorder;
+        }
+    }
+
    stream->parser = av_parser_init(AV_CODEC_ID_H264);
    if (!stream->parser) {
        LOGE("Could not initialize parser");
-        goto finally_close_sinks;
+        goto finally_stop_and_join_recorder;
    }

    // We must only pass complete frames to av_parser_parse2()!
    // It's more complicated, but this allows to reduce the latency by 1 frame!
    stream->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;

-    AVPacket *packet = av_packet_alloc();
-    if (!packet) {
-        LOGE("Could not allocate packet");
-        goto finally_close_parser;
-    }
-
    for (;;) {
-        bool ok = stream_recv_packet(stream, packet);
+        AVPacket packet;
+        bool ok = stream_recv_packet(stream, &packet);
        if (!ok) {
            // end of stream
            break;
        }

-        ok = stream_push_packet(stream, packet);
-        av_packet_unref(packet);
+        ok = stream_push_packet(stream, &packet);
+        av_packet_unref(&packet);
        if (!ok) {
            // cannot process packet (error already logged)
            break;
@ -243,43 +238,39 @@ run_stream(void *data) {

    LOGD("End of frames");

-    if (stream->pending) {
-        av_packet_unref(stream->pending);
-        av_packet_free(&stream->pending);
+    if (stream->has_pending) {
+        av_packet_unref(&stream->pending);
    }

-    av_packet_free(&packet);
-finally_close_parser:
    av_parser_close(stream->parser);
-finally_close_sinks:
-    stream_close_sinks(stream);
+finally_stop_and_join_recorder:
+    if (stream->recorder) {
+        recorder_stop(stream->recorder);
+        LOGI("Finishing recording...");
+        recorder_join(stream->recorder);
+    }
+finally_close_recorder:
+    if (stream->recorder) {
+        recorder_close(stream->recorder);
+    }
+finally_close_decoder:
+    if (stream->decoder) {
+        decoder_close(stream->decoder);
+    }
 finally_free_codec_ctx:
    avcodec_free_context(&stream->codec_ctx);
 end:
-    stream->cbs->on_eos(stream, stream->cbs_userdata);
-
+    notify_stopped();
    return 0;
 }

 void
 stream_init(struct stream *stream, socket_t socket,
-            const struct stream_callbacks *cbs, void *cbs_userdata) {
+            struct decoder *decoder, struct recorder *recorder) {
    stream->socket = socket;
-    stream->pending = NULL;
-    stream->sink_count = 0;
-
-    assert(cbs && cbs->on_eos);
-
-    stream->cbs = cbs;
-    stream->cbs_userdata = cbs_userdata;
-}
-
-void
-stream_add_sink(struct stream *stream, struct sc_packet_sink *sink) {
-    assert(stream->sink_count < STREAM_MAX_SINKS);
-    assert(sink);
-    assert(sink->ops);
-    stream->sinks[stream->sink_count++] = sink;
+    stream->decoder = decoder,
+    stream->recorder = recorder;
+    stream->has_pending = false;
 }

 bool
@ -294,6 +285,13 @@ stream_start(struct stream *stream) {
    return true;
 }

+void
+stream_stop(struct stream *stream) {
+    if (stream->decoder) {
+        decoder_interrupt(stream->decoder);
+    }
+}
+
 void
 stream_join(struct stream *stream) {
    sc_thread_join(&stream->thread, NULL);
--- a/app/src/stream.h
+++ b/app/src/stream.h
@ -6,44 +6,36 @@
 #include <stdbool.h>
 #include <stdint.h>
 #include <libavformat/avformat.h>
+#include <SDL2/SDL_atomic.h>

-#include "trait/packet_sink.h"
 #include "util/net.h"
 #include "util/thread.h"

-#define STREAM_MAX_SINKS 2
+struct video_buffer;

 struct stream {
    socket_t socket;
    sc_thread thread;
-
-    struct sc_packet_sink *sinks[STREAM_MAX_SINKS];
-    unsigned sink_count;
-
+    struct decoder *decoder;
+    struct recorder *recorder;
    AVCodecContext *codec_ctx;
    AVCodecParserContext *parser;
    // successive packets may need to be concatenated, until a non-config
    // packet is available
-    AVPacket *pending;
-
-    const struct stream_callbacks *cbs;
-    void *cbs_userdata;
-};
-
-struct stream_callbacks {
-    void (*on_eos)(struct stream *stream, void *userdata);
+    bool has_pending;
+    AVPacket pending;
 };

 void
 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);
+            struct decoder *decoder, struct recorder *recorder);

 bool
 stream_start(struct stream *stream);

+void
+stream_stop(struct stream *stream);
+
 void
 stream_join(struct stream *stream);

--- a/app/src/trait/frame_sink.h
+++ b/app/src/trait/frame_sink.h
@ -1,26 +0,0 @@
-#ifndef SC_FRAME_SINK
-#define SC_FRAME_SINK
-
-#include "common.h"
-
-#include <assert.h>
-#include <stdbool.h>
-
-typedef struct AVFrame AVFrame;
-
-/**
- * Frame sink trait.
- *
- * Component able to receive AVFrames should implement this trait.
- */
-struct sc_frame_sink {
-    const struct sc_frame_sink_ops *ops;
-};
-
-struct sc_frame_sink_ops {
-    bool (*open)(struct sc_frame_sink *sink);
-    void (*close)(struct sc_frame_sink *sink);
-    bool (*push)(struct sc_frame_sink *sink, const AVFrame *frame);
-};
-
-#endif
--- a/app/src/trait/packet_sink.h
+++ b/app/src/trait/packet_sink.h
@ -1,27 +0,0 @@
-#ifndef SC_PACKET_SINK
-#define SC_PACKET_SINK
-
-#include "common.h"
-
-#include <assert.h>
-#include <stdbool.h>
-
-typedef struct AVCodec AVCodec;
-typedef struct AVPacket AVPacket;
-
-/**
- * Packet sink trait.
- *
- * Component able to receive AVPackets should implement this trait.
- */
-struct sc_packet_sink {
-    const struct sc_packet_sink_ops *ops;
-};
-
-struct sc_packet_sink_ops {
-    bool (*open)(struct sc_packet_sink *sink, const AVCodec *codec);
-    void (*close)(struct sc_packet_sink *sink);
-    bool (*push)(struct sc_packet_sink *sink, const AVPacket *packet);
-};
-
-#endif
--- a/app/src/util/str_util.c
+++ b/app/src/util/str_util.c
@ -140,24 +140,6 @@ parse_integer_with_suffix(const char *s, long *out) {
    return true;
 }

-bool
-strlist_contains(const char *list, char sep, const char *s) {
-    char *p;
-    do {
-        p = strchr(list, sep);
-
-        size_t token_len = p ? (size_t) (p - list) : strlen(list);
-        if (!strncmp(list, s, token_len)) {
-            return true;
-        }
-
-        if (p) {
-            list = p + 1;
-        }
-    } while (p);
-    return false;
-}
-
 size_t
 utf8_truncation_index(const char *utf8, size_t max_len) {
    size_t len = strlen(utf8);
--- a/app/src/util/str_util.h
+++ b/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 truncation
+// returns the number of chars actually written (max n-1) if no trucation
 // occurred, or n if truncated
 size_t
 xstrjoin(char *dst, const char *const tokens[], char sep, size_t n);
@ -43,11 +43,6 @@ parse_integers(const char *s, const char sep, size_t max_items, long *out);
 bool
 parse_integer_with_suffix(const char *s, long *out);

-// search s in the list separated by sep
-// for example, strlist_contains("a,bc,def", ',', "bc") returns true
-bool
-strlist_contains(const char *list, char sep, const char *s);
-
 // return the index to truncate a UTF-8 string at a valid position
 size_t
 utf8_truncation_index(const char *utf8, size_t max_len);
--- a/app/src/util/thread.c
+++ b/app/src/util/thread.c
@ -61,7 +61,6 @@ sc_mutex_lock(sc_mutex *mutex) {
 void
 sc_mutex_unlock(sc_mutex *mutex) {
 #ifndef NDEBUG
-    assert(sc_mutex_held(mutex));
    mutex->locker = 0;
 #endif
    int r = SDL_UnlockMutex(mutex->mutex);
--- a/app/src/v4l2_sink.c
+++ b/app/src/v4l2_sink.c
@ -1,356 +0,0 @@
-#include "v4l2_sink.h"
-
-#include "util/log.h"
-#include "util/str_util.h"
-
-/** Downcast frame_sink to sc_v4l2_sink */
-#define DOWNCAST(SINK) container_of(SINK, struct sc_v4l2_sink, frame_sink)
-
-static const AVRational SCRCPY_TIME_BASE = {1, 1000000}; // timestamps in us
-
-static const AVOutputFormat *
-find_muxer(const char *name) {
-#ifdef SCRCPY_LAVF_HAS_NEW_MUXER_ITERATOR_API
-    void *opaque = NULL;
-#endif
-    const AVOutputFormat *oformat = NULL;
-    do {
-#ifdef SCRCPY_LAVF_HAS_NEW_MUXER_ITERATOR_API
-        oformat = av_muxer_iterate(&opaque);
-#else
-        oformat = av_oformat_next(oformat);
-#endif
-        // until null or containing the requested name
-    } while (oformat && !strlist_contains(oformat->name, ',', name));
-    return oformat;
-}
-
-static bool
-write_header(struct sc_v4l2_sink *vs, const AVPacket *packet) {
-    AVStream *ostream = vs->format_ctx->streams[0];
-
-    uint8_t *extradata = av_malloc(packet->size * sizeof(uint8_t));
-    if (!extradata) {
-        LOGC("Could not allocate extradata");
-        return false;
-    }
-
-    // copy the first packet to the extra data
-    memcpy(extradata, packet->data, packet->size);
-
-    ostream->codecpar->extradata = extradata;
-    ostream->codecpar->extradata_size = packet->size;
-
-    int ret = avformat_write_header(vs->format_ctx, NULL);
-    if (ret < 0) {
-        LOGE("Failed to write header to %s", vs->device_name);
-        return false;
-    }
-
-    return true;
-}
-
-static void
-rescale_packet(struct sc_v4l2_sink *vs, AVPacket *packet) {
-    AVStream *ostream = vs->format_ctx->streams[0];
-    av_packet_rescale_ts(packet, SCRCPY_TIME_BASE, ostream->time_base);
-}
-
-static bool
-write_packet(struct sc_v4l2_sink *vs, AVPacket *packet) {
-    if (!vs->header_written) {
-        bool ok = write_header(vs, packet);
-        if (!ok) {
-            return false;
-        }
-        vs->header_written = true;
-        return true;
-    }
-
-    rescale_packet(vs, packet);
-
-    bool ok = av_write_frame(vs->format_ctx, packet) >= 0;
-
-    // Failing to write the last frame is not very serious, no future frame may
-    // depend on it, so the resulting file will still be valid
-    (void) ok;
-
-    return true;
-}
-
-static bool
-encode_and_write_frame(struct sc_v4l2_sink *vs, const AVFrame *frame) {
-    int ret = avcodec_send_frame(vs->encoder_ctx, frame);
-    if (ret < 0 && ret != AVERROR(EAGAIN)) {
-        LOGE("Could not send v4l2 video frame: %d", ret);
-        return false;
-    }
-
-    AVPacket *packet = vs->packet;
-    ret = avcodec_receive_packet(vs->encoder_ctx, packet);
-    if (ret == 0) {
-        // A packet was received
-
-        bool ok = write_packet(vs, packet);
-        av_packet_unref(packet);
-        if (!ok) {
-            LOGW("Could not send packet to v4l2 sink");
-            return false;
-        }
-    } else if (ret != AVERROR(EAGAIN)) {
-        LOGE("Could not receive v4l2 video packet: %d", ret);
-        return false;
-    }
-
-    return true;
-}
-
-static int
-run_v4l2_sink(void *data) {
-    struct sc_v4l2_sink *vs = data;
-
-    for (;;) {
-        sc_mutex_lock(&vs->mutex);
-
-        while (!vs->stopped && vs->vb.pending_frame_consumed) {
-            sc_cond_wait(&vs->cond, &vs->mutex);
-        }
-
-        if (vs->stopped) {
-            sc_mutex_unlock(&vs->mutex);
-            break;
-        }
-
-        sc_mutex_unlock(&vs->mutex);
-
-        video_buffer_consume(&vs->vb, vs->frame);
-        bool ok = encode_and_write_frame(vs, vs->frame);
-        av_frame_unref(vs->frame);
-        if (!ok) {
-            LOGE("Could not send frame to v4l2 sink");
-            break;
-        }
-    }
-
-    LOGD("V4l2 thread ended");
-
-    return 0;
-}
-
-static bool
-sc_v4l2_sink_open(struct sc_v4l2_sink *vs) {
-    bool ok = video_buffer_init(&vs->vb);
-    if (!ok) {
-        return false;
-    }
-
-    ok = sc_mutex_init(&vs->mutex);
-    if (!ok) {
-        LOGC("Could not create mutex");
-        goto error_video_buffer_destroy;
-    }
-
-    ok = sc_cond_init(&vs->cond);
-    if (!ok) {
-        LOGC("Could not create cond");
-        goto error_mutex_destroy;
-    }
-
-    // FIXME
-    const AVOutputFormat *format = find_muxer("video4linux2,v4l2");
-    if (!format) {
-        LOGE("Could not find v4l2 muxer");
-        goto error_cond_destroy;
-    }
-
-    const AVCodec *encoder = avcodec_find_encoder(AV_CODEC_ID_RAWVIDEO);
-    if (!encoder) {
-        LOGE("Raw video encoder not found");
-        return false;
-    }
-
-    vs->format_ctx = avformat_alloc_context();
-    if (!vs->format_ctx) {
-        LOGE("Could not allocate v4l2 output context");
-        return false;
-    }
-
-    // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
-    // returns (on purpose) a pointer-to-const, but AVFormatContext.oformat
-    // still expects a pointer-to-non-const (it has not be updated accordingly)
-    // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
-    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) {
-        LOGE("Could not allocate new v4l2 stream");
-        goto error_avformat_free_context;
-        return false;
-    }
-
-    ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
-    ostream->codecpar->codec_id = encoder->id;
-    ostream->codecpar->format = AV_PIX_FMT_YUV420P;
-    ostream->codecpar->width = vs->frame_size.width;
-    ostream->codecpar->height = vs->frame_size.height;
-
-    int ret = avio_open(&vs->format_ctx->pb, vs->device_name, AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        LOGE("Failed to open output device: %s", vs->device_name);
-        // ostream will be cleaned up during context cleaning
-        goto error_avformat_free_context;
-    }
-
-    vs->encoder_ctx = avcodec_alloc_context3(encoder);
-    if (!vs->encoder_ctx) {
-        LOGC("Could not allocate codec context for v4l2");
-        goto error_avio_close;
-    }
-
-    vs->encoder_ctx->width = vs->frame_size.width;
-    vs->encoder_ctx->height = vs->frame_size.height;
-    vs->encoder_ctx->pix_fmt = AV_PIX_FMT_YUV420P;
-    vs->encoder_ctx->time_base.num = 1;
-    vs->encoder_ctx->time_base.den = 1;
-
-    if (avcodec_open2(vs->encoder_ctx, encoder, NULL) < 0) {
-        LOGE("Could not open codec for v4l2");
-        goto error_avcodec_free_context;
-    }
-
-    vs->frame = av_frame_alloc();
-    if (!vs->frame) {
-        LOGE("Could not create v4l2 frame");
-        goto error_avcodec_close;
-    }
-
-    vs->packet = av_packet_alloc();
-    if (!vs->packet) {
-        LOGE("Could not allocate packet");
-        goto error_av_frame_free;
-    }
-
-    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_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:
-    avcodec_close(vs->encoder_ctx);
-error_avcodec_free_context:
-    avcodec_free_context(&vs->encoder_ctx);
-error_avio_close:
-    avio_close(vs->format_ctx->pb);
-error_avformat_free_context:
-    avformat_free_context(vs->format_ctx);
-error_cond_destroy:
-    sc_cond_destroy(&vs->cond);
-error_mutex_destroy:
-    sc_mutex_destroy(&vs->mutex);
-error_video_buffer_destroy:
-    video_buffer_destroy(&vs->vb);
-
-    return false;
-}
-
-static void
-sc_v4l2_sink_close(struct sc_v4l2_sink *vs) {
-    sc_mutex_lock(&vs->mutex);
-    vs->stopped = true;
-    sc_cond_signal(&vs->cond);
-    sc_mutex_unlock(&vs->mutex);
-
-    sc_thread_join(&vs->thread, NULL);
-
-    av_packet_free(&vs->packet);
-    av_frame_free(&vs->frame);
-    avcodec_close(vs->encoder_ctx);
-    avcodec_free_context(&vs->encoder_ctx);
-    avio_close(vs->format_ctx->pb);
-    avformat_free_context(vs->format_ctx);
-    sc_cond_destroy(&vs->cond);
-    sc_mutex_destroy(&vs->mutex);
-    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);
-    if (!ok) {
-        return false;
-    }
-
-    // signal possible change of vs->vb.pending_frame_consumed
-    sc_cond_signal(&vs->cond);
-
-    return true;
-}
-
-static bool
-sc_v4l2_frame_sink_open(struct sc_frame_sink *sink) {
-    struct sc_v4l2_sink *vs = DOWNCAST(sink);
-    return sc_v4l2_sink_open(vs);
-}
-
-static void
-sc_v4l2_frame_sink_close(struct sc_frame_sink *sink) {
-    struct sc_v4l2_sink *vs = DOWNCAST(sink);
-    sc_v4l2_sink_close(vs);
-}
-
-static bool
-sc_v4l2_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
-    struct sc_v4l2_sink *vs = DOWNCAST(sink);
-    return sc_v4l2_sink_push(vs, frame);
-}
-
-bool
-sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
-                  struct size frame_size) {
-    vs->device_name = strdup(device_name);
-    if (!vs->device_name) {
-        LOGE("Could not strdup v4l2 device name");
-        return false;
-    }
-
-    vs->frame_size = frame_size;
-
-    static const struct sc_frame_sink_ops ops = {
-        .open = sc_v4l2_frame_sink_open,
-        .close = sc_v4l2_frame_sink_close,
-        .push = sc_v4l2_frame_sink_push,
-    };
-
-    vs->frame_sink.ops = &ops;
-
-    return true;
-}
-
-void
-sc_v4l2_sink_destroy(struct sc_v4l2_sink *vs) {
-    free(vs->device_name);
-}
--- a/app/src/v4l2_sink.h
+++ b/app/src/v4l2_sink.h
@ -1,39 +0,0 @@
-#ifndef SC_V4L2_SINK_H
-#define SC_V4L2_SINK_H
-
-#include "common.h"
-
-#include "coords.h"
-#include "trait/frame_sink.h"
-#include "video_buffer.h"
-
-#include <libavformat/avformat.h>
-
-struct sc_v4l2_sink {
-    struct sc_frame_sink frame_sink; // frame sink trait
-
-    struct video_buffer vb;
-    AVFormatContext *format_ctx;
-    AVCodecContext *encoder_ctx;
-
-    char *device_name;
-    struct size frame_size;
-
-    sc_thread thread;
-    sc_mutex mutex;
-    sc_cond cond;
-    bool stopped;
-    bool header_written;
-
-    AVFrame *frame;
-    AVPacket *packet;
-};
-
-bool
-sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
-                  struct size frame_size);
-
-void
-sc_v4l2_sink_destroy(struct sc_v4l2_sink *vs);
-
-#endif
--- a/app/src/video_buffer.c
+++ b/app/src/video_buffer.c
@ -7,82 +7,133 @@
 #include "util/log.h"

 bool
-video_buffer_init(struct video_buffer *vb) {
-    vb->pending_frame = av_frame_alloc();
-    if (!vb->pending_frame) {
-        return false;
+video_buffer_init(struct video_buffer *vb, struct fps_counter *fps_counter,
+                  bool render_expired_frames) {
+    vb->fps_counter = fps_counter;
+
+    vb->decoding_frame = av_frame_alloc();
+    if (!vb->decoding_frame) {
+        goto error_0;
    }

-    vb->tmp_frame = av_frame_alloc();
-    if (!vb->tmp_frame) {
-        av_frame_free(&vb->pending_frame);
-        return false;
+    vb->pending_frame = av_frame_alloc();
+    if (!vb->pending_frame) {
+        goto error_1;
+    }
+
+    vb->rendering_frame = av_frame_alloc();
+    if (!vb->rendering_frame) {
+        goto error_2;
    }

    bool ok = sc_mutex_init(&vb->mutex);
    if (!ok) {
-        av_frame_free(&vb->pending_frame);
-        av_frame_free(&vb->tmp_frame);
-        return false;
+        goto error_3;
    }

-    // there is initially no frame, so consider it has already been consumed
+    vb->render_expired_frames = render_expired_frames;
+    if (render_expired_frames) {
+        ok = sc_cond_init(&vb->pending_frame_consumed_cond);
+        if (!ok) {
+            sc_mutex_destroy(&vb->mutex);
+            goto error_2;
+        }
+        // interrupted is not used if expired frames are not rendered
+        // since offering a frame will never block
+        vb->interrupted = false;
+    }
+
+    // there is initially no rendering frame, so consider it has already been
+    // consumed
    vb->pending_frame_consumed = true;

    return true;
+
+error_3:
+    av_frame_free(&vb->rendering_frame);
+error_2:
+    av_frame_free(&vb->pending_frame);
+error_1:
+    av_frame_free(&vb->decoding_frame);
+error_0:
+    return false;
 }

 void
 video_buffer_destroy(struct video_buffer *vb) {
+    if (vb->render_expired_frames) {
+        sc_cond_destroy(&vb->pending_frame_consumed_cond);
+    }
    sc_mutex_destroy(&vb->mutex);
+    av_frame_free(&vb->rendering_frame);
    av_frame_free(&vb->pending_frame);
-    av_frame_free(&vb->tmp_frame);
+    av_frame_free(&vb->decoding_frame);
 }

-static inline void
-swap_frames(AVFrame **lhs, AVFrame **rhs) {
-    AVFrame *tmp = *lhs;
-    *lhs = *rhs;
-    *rhs = tmp;
+static void
+video_buffer_swap_decoding_frame(struct video_buffer *vb) {
+    sc_mutex_assert(&vb->mutex);
+    AVFrame *tmp = vb->decoding_frame;
+    vb->decoding_frame = vb->pending_frame;
+    vb->pending_frame = tmp;
 }

-bool
-video_buffer_push(struct video_buffer *vb, const AVFrame *frame,
-                  bool *previous_frame_skipped) {
-    sc_mutex_lock(&vb->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(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
-    // pending_frame
-    swap_frames(&vb->pending_frame, &vb->tmp_frame);
-    av_frame_unref(vb->tmp_frame);
-
-    if (previous_frame_skipped) {
-        *previous_frame_skipped = !vb->pending_frame_consumed;
-    }
-    vb->pending_frame_consumed = false;
-
-    sc_mutex_unlock(&vb->mutex);
-
-    return true;
+static void
+video_buffer_swap_rendering_frame(struct video_buffer *vb) {
+    sc_mutex_assert(&vb->mutex);
+    AVFrame *tmp = vb->rendering_frame;
+    vb->rendering_frame = vb->pending_frame;
+    vb->pending_frame = tmp;
 }

 void
-video_buffer_consume(struct video_buffer *vb, AVFrame *dst) {
+video_buffer_offer_decoded_frame(struct video_buffer *vb,
+                                 bool *previous_frame_skipped) {
+    sc_mutex_lock(&vb->mutex);
+    if (vb->render_expired_frames) {
+        // wait for the current (expired) frame to be consumed
+        while (!vb->pending_frame_consumed && !vb->interrupted) {
+            sc_cond_wait(&vb->pending_frame_consumed_cond, &vb->mutex);
+        }
+    } else if (!vb->pending_frame_consumed) {
+        fps_counter_add_skipped_frame(vb->fps_counter);
+    }
+
+    video_buffer_swap_decoding_frame(vb);
+
+    *previous_frame_skipped = !vb->pending_frame_consumed;
+    vb->pending_frame_consumed = false;
+
+    sc_mutex_unlock(&vb->mutex);
+}
+
+const AVFrame *
+video_buffer_take_rendering_frame(struct video_buffer *vb) {
    sc_mutex_lock(&vb->mutex);
    assert(!vb->pending_frame_consumed);
    vb->pending_frame_consumed = true;

-    av_frame_move_ref(dst, vb->pending_frame);
-    // av_frame_move_ref() resets its source frame, so no need to call
-    // av_frame_unref()
+    fps_counter_add_rendered_frame(vb->fps_counter);

+    video_buffer_swap_rendering_frame(vb);
+
+    if (vb->render_expired_frames) {
+        // unblock video_buffer_offer_decoded_frame()
+        sc_cond_signal(&vb->pending_frame_consumed_cond);
+    }
    sc_mutex_unlock(&vb->mutex);
+
+    // rendering_frame is only written from this thread, no need to lock
+    return vb->rendering_frame;
+}
+
+void
+video_buffer_interrupt(struct video_buffer *vb) {
+    if (vb->render_expired_frames) {
+        sc_mutex_lock(&vb->mutex);
+        vb->interrupted = true;
+        sc_mutex_unlock(&vb->mutex);
+        // wake up blocking wait
+        sc_cond_signal(&vb->pending_frame_consumed_cond);
+    }
 }
--- a/app/src/video_buffer.h
+++ b/app/src/video_buffer.h
@ -12,39 +12,57 @@
 typedef struct AVFrame AVFrame;

 /**
- * A video buffer holds 1 pending frame, which is the last frame received from
- * the producer (typically, the decoder).
+ * There are 3 frames in memory:
+ *  - one frame is held by the decoder (decoding_frame)
+ *  - one frame is held by the renderer (rendering_frame)
+ *  - one frame is shared between the decoder and the renderer (pending_frame)
 *
- * 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.
+ * The decoder decodes a packet into the decoding_frame (it may takes time).
 *
- * 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.
+ * Once the frame is decoded, it calls video_buffer_offer_decoded_frame(),
+ * which swaps the decoding and pending frames.
+ *
+ * When the renderer is notified that a new frame is available, it calls
+ * video_buffer_take_rendering_frame() to retrieve it, which swaps the pending
+ * and rendering frames. The frame is valid until the next call, without
+ * blocking the decoder.
 */

 struct video_buffer {
+    AVFrame *decoding_frame;
    AVFrame *pending_frame;
-    AVFrame *tmp_frame; // To preserve the pending frame on error
+    AVFrame *rendering_frame;

    sc_mutex mutex;
+    bool render_expired_frames;
+    bool interrupted;

+    sc_cond pending_frame_consumed_cond;
    bool pending_frame_consumed;
+
+    struct fps_counter *fps_counter;
 };

 bool
-video_buffer_init(struct video_buffer *vb);
+video_buffer_init(struct video_buffer *vb, struct fps_counter *fps_counter,
+                  bool render_expired_frames);

 void
 video_buffer_destroy(struct video_buffer *vb);

-bool
-video_buffer_push(struct video_buffer *vb, const AVFrame *frame, bool *skipped);
-
+// set the decoded frame as ready for rendering
+// the output flag is set to report whether the previous frame has been skipped
 void
-video_buffer_consume(struct video_buffer *vb, AVFrame *dst);
+video_buffer_offer_decoded_frame(struct video_buffer *vb,
+                                 bool *previous_frame_skipped);
+
+// mark the rendering frame as consumed and return it
+// the frame is valid until the next call to this function
+const AVFrame *
+video_buffer_take_rendering_frame(struct video_buffer *vb);
+
+// wake up and avoid any blocking call
+void
+video_buffer_interrupt(struct video_buffer *vb);

 #endif
--- a/app/tests/test_cli.c
+++ b/app/tests/test_cli.c
@ -51,13 +51,14 @@ static void test_options(void) {
        "--fullscreen",
        "--max-fps", "30",
        "--max-size", "1024",
-        "--lock-video-orientation=2", // optional arguments require '='
+        "--lock-video-orientation", "2",
        // "--no-control" is not compatible with "--turn-screen-off"
        // "--no-display" is not compatible with "--fulscreen"
        "--port", "1234:1236",
        "--push-target", "/sdcard/Movies",
        "--record", "file",
        "--record-format", "mkv",
+        "--render-expired-frames",
        "--serial", "0123456789abcdef",
        "--show-touches",
        "--turn-screen-off",
@ -86,6 +87,7 @@ static void test_options(void) {
    assert(!strcmp(opts->push_target, "/sdcard/Movies"));
    assert(!strcmp(opts->record_filename, "file"));
    assert(opts->record_format == SC_RECORD_FORMAT_MKV);
+    assert(opts->render_expired_frames);
    assert(!strcmp(opts->serial, "0123456789abcdef"));
    assert(opts->show_touches);
    assert(opts->turn_screen_off);
--- a/app/tests/test_control_msg_serialize.c
+++ b/app/tests/test_control_msg_serialize.c
@ -146,18 +146,14 @@ static void test_serialize_inject_scroll_event(void) {
 static void test_serialize_back_or_screen_on(void) {
    struct control_msg msg = {
        .type = CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON,
-        .back_or_screen_on = {
-            .action = AKEY_EVENT_ACTION_UP,
-        },
    };

    unsigned char buf[CONTROL_MSG_MAX_SIZE];
    size_t size = control_msg_serialize(&msg, buf);
-    assert(size == 2);
+    assert(size == 1);

    const unsigned char expected[] = {
        CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON,
-        0x01, // AKEY_EVENT_ACTION_UP
    };
    assert(!memcmp(buf, expected, sizeof(expected)));
 }
@ -177,9 +173,9 @@ static void test_serialize_expand_notification_panel(void) {
    assert(!memcmp(buf, expected, sizeof(expected)));
 }

-static void test_serialize_expand_settings_panel(void) {
+static void test_serialize_collapse_notification_panel(void) {
    struct control_msg msg = {
-        .type = CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL,
+        .type = CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL,
    };

    unsigned char buf[CONTROL_MSG_MAX_SIZE];
@ -187,22 +183,7 @@ static void test_serialize_expand_settings_panel(void) {
    assert(size == 1);

    const unsigned char expected[] = {
-        CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL,
-    };
-    assert(!memcmp(buf, expected, sizeof(expected)));
-}
-
-static void test_serialize_collapse_panels(void) {
-    struct control_msg msg = {
-        .type = CONTROL_MSG_TYPE_COLLAPSE_PANELS,
-    };
-
-    unsigned char buf[CONTROL_MSG_MAX_SIZE];
-    size_t size = control_msg_serialize(&msg, buf);
-    assert(size == 1);
-
-    const unsigned char expected[] = {
-        CONTROL_MSG_TYPE_COLLAPSE_PANELS,
+        CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL,
    };
    assert(!memcmp(buf, expected, sizeof(expected)));
 }
@ -289,8 +270,7 @@ int main(int argc, char *argv[]) {
    test_serialize_inject_scroll_event();
    test_serialize_back_or_screen_on();
    test_serialize_expand_notification_panel();
-    test_serialize_expand_settings_panel();
-    test_serialize_collapse_panels();
+    test_serialize_collapse_notification_panel();
    test_serialize_get_clipboard();
    test_serialize_set_clipboard();
    test_serialize_set_screen_power_mode();
--- a/app/tests/test_strutil.c
+++ b/app/tests/test_strutil.c
@ -287,18 +287,6 @@ static void test_parse_integer_with_suffix(void) {
    assert(!ok);
 }

-static void test_strlist_contains(void) {
-    assert(strlist_contains("a,bc,def", ',', "bc"));
-    assert(!strlist_contains("a,bc,def", ',', "b"));
-    assert(strlist_contains("", ',', ""));
-    assert(strlist_contains("abc,", ',', ""));
-    assert(strlist_contains(",abc", ',', ""));
-    assert(strlist_contains("abc,,def", ',', ""));
-    assert(!strlist_contains("abc", ',', ""));
-    assert(strlist_contains(",,|x", '|', ",,"));
-    assert(strlist_contains("xyz", '\0', "xyz"));
-}
-
 int main(int argc, char *argv[]) {
    (void) argc;
    (void) argv;
@ -316,6 +304,5 @@ int main(int argc, char *argv[]) {
    test_parse_integer();
    test_parse_integers();
    test_parse_integer_with_suffix();
-    test_strlist_contains();
    return 0;
 }
--- a/cross_win32.txt
+++ b/cross_win32.txt
@ -2,11 +2,11 @@

 [binaries]
 name = 'mingw'
-c = 'i686-w64-mingw32-gcc'
-cpp = 'i686-w64-mingw32-g++'
-ar = 'i686-w64-mingw32-ar'
-strip = 'i686-w64-mingw32-strip'
-pkgconfig = 'i686-w64-mingw32-pkg-config'
+c = '/usr/bin/i686-w64-mingw32-gcc'
+cpp = '/usr/bin/i686-w64-mingw32-g++'
+ar = '/usr/bin/i686-w64-mingw32-ar'
+strip = '/usr/bin/i686-w64-mingw32-strip'
+pkgconfig = '/usr/bin/i686-w64-mingw32-pkg-config'

 [host_machine]
 system = 'windows'
--- a/cross_win64.txt
+++ b/cross_win64.txt
@ -2,11 +2,11 @@

 [binaries]
 name = 'mingw'
-c = 'x86_64-w64-mingw32-gcc'
-cpp = 'x86_64-w64-mingw32-g++'
-ar = 'x86_64-w64-mingw32-ar'
-strip = 'x86_64-w64-mingw32-strip'
-pkgconfig = 'x86_64-w64-mingw32-pkg-config'
+c = '/usr/bin/x86_64-w64-mingw32-gcc'
+cpp = '/usr/bin/x86_64-w64-mingw32-g++'
+ar = '/usr/bin/x86_64-w64-mingw32-ar'
+strip = '/usr/bin/x86_64-w64-mingw32-strip'
+pkgconfig = '/usr/bin/x86_64-w64-mingw32-pkg-config'

 [host_machine]
 system = 'windows'
--- a/data/scrcpy-noconsole.vbs
+++ b/data/scrcpy-noconsole.vbs
@ -1,7 +1 @@
-strCommand = "cmd /c scrcpy.exe"
-
-For Each Arg In WScript.Arguments
-    strCommand = strCommand & " """ & replace(Arg, """", """""""""") & """"
-Next
-
-CreateObject("Wscript.Shell").Run strCommand, 0, false
+CreateObject("Wscript.Shell").Run "cmd /c scrcpy.exe", 0, false
--- a/install_release.sh
+++ b/install_release.sh
@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-set -e
-
-BUILDDIR=build-auto
-PREBUILT_SERVER_URL=https://github.com/Genymobile/scrcpy/releases/download/v1.17/scrcpy-server-v1.17
-PREBUILT_SERVER_SHA256=11b5ad2d1bc9b9730fb7254a78efd71a8ff46b1938ff468e47a21b653a1b6725
-
-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
--- a/meson.build
+++ b/meson.build
@ -4,7 +4,6 @@ project('scrcpy', 'c',
        default_options: [
            'c_std=c11',
            'warning_level=2',
-            'b_ndebug=if-release',
        ])

 if get_option('compile_app')
--- a/meson_options.txt
+++ b/meson_options.txt
@ -3,5 +3,6 @@ option('compile_server', type: 'boolean', value: true, description: 'Build the s
 option('crossbuild_windows', type: 'boolean', value: false, description: 'Build for Windows from Linux')
 option('prebuilt_server', type: 'string', description: 'Path of the prebuilt server')
 option('portable', type: 'boolean', value: false, description: 'Use scrcpy-server from the same directory as the scrcpy executable')
+option('hidpi_support', type: 'boolean', value: true, description: 'Enable High DPI support')
 option('server_debugger', type: 'boolean', value: false, description: 'Run a server debugger and wait for a client to be attached')
 option('server_debugger_method', type: 'combo', choices: ['old', 'new'], value: 'new', description: 'Select the debugger method (Android < 9: "old", Android >= 9: "new")')
--- a/server/src/main/java/com/genymobile/scrcpy/CleanUp.java
+++ b/server/src/main/java/com/genymobile/scrcpy/CleanUp.java
@ -3,10 +3,6 @@ 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;

@ -19,123 +15,23 @@ 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(int displayId, int restoreStayOn, boolean disableShowTouches, boolean restoreNormalPowerMode, boolean powerOffScreen)
-            throws IOException {
-        Config config = new Config();
-        config.displayId = displayId;
-        config.disableShowTouches = disableShowTouches;
-        config.restoreStayOn = restoreStayOn;
-        config.restoreNormalPowerMode = restoreNormalPowerMode;
-        config.powerOffScreen = powerOffScreen;
-
-        if (config.hasWork()) {
-            startProcess(config);
+    public static void configure(boolean disableShowTouches, int restoreStayOn, boolean restoreNormalPowerMode) throws IOException {
+        boolean needProcess = disableShowTouches || restoreStayOn != -1 || restoreNormalPowerMode;
+        if (needProcess) {
+            startProcess(disableShowTouches, restoreStayOn, restoreNormalPowerMode);
        } else {
            // There is no additional clean up to do when scrcpy dies
            unlinkSelf();
        }
    }

-    private static void startProcess(Config config) throws IOException {
-        String[] cmd = {"app_process", "/", CleanUp.class.getName(), config.toBase64()};
+    private static void startProcess(boolean disableShowTouches, int restoreStayOn, boolean restoreNormalPowerMode) throws IOException {
+        String[] cmd = {"app_process", "/", CleanUp.class.getName(), String.valueOf(disableShowTouches), String.valueOf(
+                restoreStayOn), String.valueOf(restoreNormalPowerMode)};

        ProcessBuilder builder = new ProcessBuilder(cmd);
        builder.environment().put("CLASSPATH", SERVER_PATH);
@ -162,28 +58,27 @@ public final class CleanUp {

        Ln.i("Cleaning up");

-        Config config = Config.fromBase64(args[0]);
+        boolean disableShowTouches = Boolean.parseBoolean(args[0]);
+        int restoreStayOn = Integer.parseInt(args[1]);
+        boolean restoreNormalPowerMode = Boolean.parseBoolean(args[2]);

-        if (config.disableShowTouches || config.restoreStayOn != -1) {
+        if (disableShowTouches || restoreStayOn != -1) {
            ServiceManager serviceManager = new ServiceManager();
            try (ContentProvider settings = serviceManager.getActivityManager().createSettingsProvider()) {
-                if (config.disableShowTouches) {
+                if (disableShowTouches) {
                    Ln.i("Disabling \"show touches\"");
                    settings.putValue(ContentProvider.TABLE_SYSTEM, "show_touches", "0");
                }
-                if (config.restoreStayOn != -1) {
+                if (restoreStayOn != -1) {
                    Ln.i("Restoring \"stay awake\"");
-                    settings.putValue(ContentProvider.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(config.restoreStayOn));
+                    settings.putValue(ContentProvider.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(restoreStayOn));
                }
            }
        }

-        if (Device.isScreenOn()) {
-            if (config.powerOffScreen) {
-                Ln.i("Power off screen");
-                Device.powerOffScreen(config.displayId);
-            } else if (config.restoreNormalPowerMode) {
-                Ln.i("Restoring normal power mode");
+        if (restoreNormalPowerMode) {
+            Ln.i("Restoring normal power mode");
+            if (Device.isScreenOn()) {
                Device.setScreenPowerMode(Device.POWER_MODE_NORMAL);
            }
        }
--- a/server/src/main/java/com/genymobile/scrcpy/ControlMessage.java
+++ b/server/src/main/java/com/genymobile/scrcpy/ControlMessage.java
@ -11,12 +11,11 @@ public final class ControlMessage {
    public static final int TYPE_INJECT_SCROLL_EVENT = 3;
    public static final int TYPE_BACK_OR_SCREEN_ON = 4;
    public static final int TYPE_EXPAND_NOTIFICATION_PANEL = 5;
-    public static final int TYPE_EXPAND_SETTINGS_PANEL = 6;
-    public static final int TYPE_COLLAPSE_PANELS = 7;
-    public static final int TYPE_GET_CLIPBOARD = 8;
-    public static final int TYPE_SET_CLIPBOARD = 9;
-    public static final int TYPE_SET_SCREEN_POWER_MODE = 10;
-    public static final int TYPE_ROTATE_DEVICE = 11;
+    public static final int TYPE_COLLAPSE_NOTIFICATION_PANEL = 6;
+    public static final int TYPE_GET_CLIPBOARD = 7;
+    public static final int TYPE_SET_CLIPBOARD = 8;
+    public static final int TYPE_SET_SCREEN_POWER_MODE = 9;
+    public static final int TYPE_ROTATE_DEVICE = 10;

    private int type;
    private String text;
@ -72,13 +71,6 @@ public final class ControlMessage {
        return msg;
    }

-    public static ControlMessage createBackOrScreenOn(int action) {
-        ControlMessage msg = new ControlMessage();
-        msg.type = TYPE_BACK_OR_SCREEN_ON;
-        msg.action = action;
-        return msg;
-    }
-
    public static ControlMessage createSetClipboard(String text, boolean paste) {
        ControlMessage msg = new ControlMessage();
        msg.type = TYPE_SET_CLIPBOARD;
--- a/server/src/main/java/com/genymobile/scrcpy/ControlMessageReader.java
+++ b/server/src/main/java/com/genymobile/scrcpy/ControlMessageReader.java
@ -11,7 +11,6 @@ public class ControlMessageReader {
    static final int INJECT_KEYCODE_PAYLOAD_LENGTH = 13;
    static final int INJECT_TOUCH_EVENT_PAYLOAD_LENGTH = 27;
    static final int INJECT_SCROLL_EVENT_PAYLOAD_LENGTH = 20;
-    static final int BACK_OR_SCREEN_ON_LENGTH = 1;
    static final int SET_SCREEN_POWER_MODE_PAYLOAD_LENGTH = 1;
    static final int SET_CLIPBOARD_FIXED_PAYLOAD_LENGTH = 1;

@ -67,18 +66,15 @@ public class ControlMessageReader {
            case ControlMessage.TYPE_INJECT_SCROLL_EVENT:
                msg = parseInjectScrollEvent();
                break;
-            case ControlMessage.TYPE_BACK_OR_SCREEN_ON:
-                msg = parseBackOrScreenOnEvent();
-                break;
            case ControlMessage.TYPE_SET_CLIPBOARD:
                msg = parseSetClipboard();
                break;
            case ControlMessage.TYPE_SET_SCREEN_POWER_MODE:
                msg = parseSetScreenPowerMode();
                break;
+            case ControlMessage.TYPE_BACK_OR_SCREEN_ON:
            case ControlMessage.TYPE_EXPAND_NOTIFICATION_PANEL:
-            case ControlMessage.TYPE_EXPAND_SETTINGS_PANEL:
-            case ControlMessage.TYPE_COLLAPSE_PANELS:
+            case ControlMessage.TYPE_COLLAPSE_NOTIFICATION_PANEL:
            case ControlMessage.TYPE_GET_CLIPBOARD:
            case ControlMessage.TYPE_ROTATE_DEVICE:
                msg = ControlMessage.createEmpty(type);
@ -154,14 +150,6 @@ public class ControlMessageReader {
        return ControlMessage.createInjectScrollEvent(position, hScroll, vScroll);
    }

-    private ControlMessage parseBackOrScreenOnEvent() {
-        if (buffer.remaining() < BACK_OR_SCREEN_ON_LENGTH) {
-            return null;
-        }
-        int action = toUnsigned(buffer.get());
-        return ControlMessage.createBackOrScreenOn(action);
-    }
-
    private ControlMessage parseSetClipboard() {
        if (buffer.remaining() < SET_CLIPBOARD_FIXED_PAYLOAD_LENGTH) {
            return null;
--- a/server/src/main/java/com/genymobile/scrcpy/Controller.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Controller.java
@ -14,7 +14,7 @@ import java.util.concurrent.TimeUnit;

 public class Controller {

-    private static final int DEFAULT_DEVICE_ID = 0;
+    private static final int DEVICE_ID_VIRTUAL = -1;

    private static final ScheduledExecutorService EXECUTOR = Executors.newSingleThreadScheduledExecutor();

@ -45,7 +45,7 @@ public class Controller {

            MotionEvent.PointerCoords coords = new MotionEvent.PointerCoords();
            coords.orientation = 0;
-            coords.size = 0;
+            coords.size = 1;

            pointerProperties[i] = props;
            pointerCoords[i] = coords;
@ -55,7 +55,7 @@ public class Controller {
    public void control() throws IOException {
        // on start, power on the device
        if (!Device.isScreenOn()) {
-            device.pressReleaseKeycode(KeyEvent.KEYCODE_POWER);
+            device.injectKeycode(KeyEvent.KEYCODE_POWER);

            // dirty hack
            // After POWER is injected, the device is powered on asynchronously.
@ -101,16 +101,13 @@ public class Controller {
                break;
            case ControlMessage.TYPE_BACK_OR_SCREEN_ON:
                if (device.supportsInputEvents()) {
-                    pressBackOrTurnScreenOn(msg.getAction());
+                    pressBackOrTurnScreenOn();
                }
                break;
            case ControlMessage.TYPE_EXPAND_NOTIFICATION_PANEL:
                Device.expandNotificationPanel();
                break;
-            case ControlMessage.TYPE_EXPAND_SETTINGS_PANEL:
-                Device.expandSettingsPanel();
-                break;
-            case ControlMessage.TYPE_COLLAPSE_PANELS:
+            case ControlMessage.TYPE_COLLAPSE_NOTIFICATION_PANEL:
                Device.collapsePanels();
                break;
            case ControlMessage.TYPE_GET_CLIPBOARD:
@ -211,13 +208,9 @@ public class Controller {
        // Right-click and middle-click only work if the source is a mouse
        boolean nonPrimaryButtonPressed = (buttons & ~MotionEvent.BUTTON_PRIMARY) != 0;
        int source = nonPrimaryButtonPressed ? InputDevice.SOURCE_MOUSE : InputDevice.SOURCE_TOUCHSCREEN;
-        if (source != InputDevice.SOURCE_MOUSE) {
-            // Buttons must not be set for touch events
-            buttons = 0;
-        }

        MotionEvent event = MotionEvent
-                .obtain(lastTouchDown, now, action, pointerCount, pointerProperties, pointerCoords, 0, buttons, 1f, 1f, DEFAULT_DEVICE_ID, 0, source,
+                .obtain(lastTouchDown, now, action, pointerCount, pointerProperties, pointerCoords, 0, buttons, 1f, 1f, DEVICE_ID_VIRTUAL, 0, source,
                        0);
        return device.injectEvent(event);
    }
@ -240,7 +233,7 @@ public class Controller {
        coords.setAxisValue(MotionEvent.AXIS_VSCROLL, vScroll);

        MotionEvent event = MotionEvent
-                .obtain(lastTouchDown, now, MotionEvent.ACTION_SCROLL, 1, pointerProperties, pointerCoords, 0, 0, 1f, 1f, DEFAULT_DEVICE_ID, 0,
+                .obtain(lastTouchDown, now, MotionEvent.ACTION_SCROLL, 1, pointerProperties, pointerCoords, 0, 0, 1f, 1f, DEVICE_ID_VIRTUAL, 0,
                        InputDevice.SOURCE_TOUCHSCREEN, 0);
        return device.injectEvent(event);
    }
@ -258,22 +251,12 @@ public class Controller {
        }, 200, TimeUnit.MILLISECONDS);
    }

-    private boolean pressBackOrTurnScreenOn(int action) {
-        if (Device.isScreenOn()) {
-            return device.injectKeyEvent(action, KeyEvent.KEYCODE_BACK, 0, 0);
-        }
-
-        // Screen is off
-        // Only press POWER on ACTION_DOWN
-        if (action != KeyEvent.ACTION_DOWN) {
-            // do nothing,
-            return true;
-        }
-
-        if (keepPowerModeOff) {
+    private boolean pressBackOrTurnScreenOn() {
+        int keycode = Device.isScreenOn() ? KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_POWER;
+        if (keepPowerModeOff && keycode == KeyEvent.KEYCODE_POWER) {
            schedulePowerModeOff();
        }
-        return device.pressReleaseKeycode(KeyEvent.KEYCODE_POWER);
+        return device.injectKeycode(keycode);
    }

    private boolean setClipboard(String text, boolean paste) {
@ -284,7 +267,7 @@ public class Controller {

        // On Android >= 7, also press the PASTE key if requested
        if (paste && Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && device.supportsInputEvents()) {
-            device.pressReleaseKeycode(KeyEvent.KEYCODE_PASTE);
+            device.injectKeycode(KeyEvent.KEYCODE_PASTE);
        }

        return ok;
--- a/server/src/main/java/com/genymobile/scrcpy/Device.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Device.java
@ -25,9 +25,6 @@ public final class Device {
    public static final int POWER_MODE_OFF = SurfaceControl.POWER_MODE_OFF;
    public static final int POWER_MODE_NORMAL = SurfaceControl.POWER_MODE_NORMAL;

-    public static final int LOCK_VIDEO_ORIENTATION_UNLOCKED = -1;
-    public static final int LOCK_VIDEO_ORIENTATION_INITIAL = -2;
-
    private static final ServiceManager SERVICE_MANAGER = new ServiceManager();

    public interface RotationListener {
@ -156,16 +153,12 @@ public final class Device {
        return Build.MODEL;
    }

-    public static boolean supportsInputEvents(int displayId) {
-        return displayId == 0 || Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q;
-    }
-
    public boolean supportsInputEvents() {
        return supportsInputEvents;
    }

-    public static boolean injectEvent(InputEvent inputEvent, int displayId) {
-        if (!supportsInputEvents(displayId)) {
+    public boolean injectEvent(InputEvent inputEvent, int mode) {
+        if (!supportsInputEvents()) {
            throw new AssertionError("Could not inject input event if !supportsInputEvents()");
        }

@ -173,30 +166,22 @@ public final class Device {
            return false;
        }

-        return SERVICE_MANAGER.getInputManager().injectInputEvent(inputEvent, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
+        return SERVICE_MANAGER.getInputManager().injectInputEvent(inputEvent, mode);
    }

    public boolean injectEvent(InputEvent event) {
-        return injectEvent(event, displayId);
-    }
-
-    public static boolean injectKeyEvent(int action, int keyCode, int repeat, int metaState, int displayId) {
-        long now = SystemClock.uptimeMillis();
-        KeyEvent event = new KeyEvent(now, now, action, keyCode, repeat, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0,
-                InputDevice.SOURCE_KEYBOARD);
-        return injectEvent(event, displayId);
+        return injectEvent(event, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
    }

    public boolean injectKeyEvent(int action, int keyCode, int repeat, int metaState) {
-        return injectKeyEvent(action, keyCode, repeat, metaState, displayId);
+        long now = SystemClock.uptimeMillis();
+        KeyEvent event = new KeyEvent(now, now, action, keyCode, repeat, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0,
+                InputDevice.SOURCE_KEYBOARD);
+        return injectEvent(event);
    }

-    public static boolean pressReleaseKeycode(int keyCode, int displayId) {
-        return injectKeyEvent(KeyEvent.ACTION_DOWN, keyCode, 0, 0, displayId) && injectKeyEvent(KeyEvent.ACTION_UP, keyCode, 0, 0, displayId);
-    }
-
-    public boolean pressReleaseKeycode(int keyCode) {
-        return pressReleaseKeycode(keyCode, displayId);
+    public boolean injectKeycode(int keyCode) {
+        return injectKeyEvent(KeyEvent.ACTION_DOWN, keyCode, 0, 0) && injectKeyEvent(KeyEvent.ACTION_UP, keyCode, 0, 0);
    }

    public static boolean isScreenOn() {
@ -215,10 +200,6 @@ public final class Device {
        SERVICE_MANAGER.getStatusBarManager().expandNotificationsPanel();
    }

-    public static void expandSettingsPanel() {
-        SERVICE_MANAGER.getStatusBarManager().expandSettingsPanel();
-    }
-
    public static void collapsePanels() {
        SERVICE_MANAGER.getStatusBarManager().collapsePanels();
    }
@ -268,13 +249,6 @@ public final class Device {
        return SurfaceControl.setDisplayPowerMode(d, mode);
    }

-    public static boolean powerOffScreen(int displayId) {
-        if (!isScreenOn()) {
-            return true;
-        }
-        return pressReleaseKeycode(KeyEvent.KEYCODE_POWER, displayId);
-    }
-
    /**
     * Disable auto-rotation (if enabled), set the screen rotation and re-enable auto-rotation (if it was enabled).
     */
--- a/server/src/main/java/com/genymobile/scrcpy/Options.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Options.java
@ -17,7 +17,6 @@ public class Options {
    private boolean stayAwake;
    private String codecOptions;
    private String encoderName;
-    private boolean powerOffScreenOnClose;

    public Ln.Level getLogLevel() {
        return logLevel;
@ -130,12 +129,4 @@ public class Options {
    public void setEncoderName(String encoderName) {
        this.encoderName = encoderName;
    }
-
-    public void setPowerOffScreenOnClose(boolean powerOffScreenOnClose) {
-        this.powerOffScreenOnClose = powerOffScreenOnClose;
-    }
-
-    public boolean getPowerOffScreenOnClose() {
-        return this.powerOffScreenOnClose;
-    }
 }
--- a/server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java
+++ b/server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java
@ -7,7 +7,6 @@ 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;

@ -226,11 +225,7 @@ public class ScreenEncoder implements Device.RotationListener {
    }

    private static IBinder createDisplay() {
-        // 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);
+        return SurfaceControl.createDisplay("scrcpy", true);
    }

    private static void configure(MediaCodec codec, MediaFormat format) {
--- a/server/src/main/java/com/genymobile/scrcpy/ScreenInfo.java
+++ b/server/src/main/java/com/genymobile/scrcpy/ScreenInfo.java
@ -82,12 +82,6 @@ public final class ScreenInfo {

    public static ScreenInfo computeScreenInfo(DisplayInfo displayInfo, Rect crop, int maxSize, int lockedVideoOrientation) {
        int rotation = displayInfo.getRotation();
-
-        if (lockedVideoOrientation == Device.LOCK_VIDEO_ORIENTATION_INITIAL) {
-            // The user requested to lock the video orientation to the current orientation
-            lockedVideoOrientation = rotation;
-        }
-
        Size deviceSize = displayInfo.getSize();
        Rect contentRect = new Rect(0, 0, deviceSize.getWidth(), deviceSize.getHeight());
        if (crop != null) {
--- a/server/src/main/java/com/genymobile/scrcpy/Server.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Server.java
@ -50,7 +50,7 @@ public final class Server {
            }
        }

-        CleanUp.configure(options.getDisplayId(), restoreStayOn, mustDisableShowTouchesOnCleanUp, true, options.getPowerOffScreenOnClose());
+        CleanUp.configure(mustDisableShowTouchesOnCleanUp, restoreStayOn, true);

        boolean tunnelForward = options.isTunnelForward();

@ -135,7 +135,7 @@ public final class Server {
                    "The server version (" + BuildConfig.VERSION_NAME + ") does not match the client " + "(" + clientVersion + ")");
        }

-        final int expectedParameters = 16;
+        final int expectedParameters = 15;
        if (args.length != expectedParameters) {
            throw new IllegalArgumentException("Expecting " + expectedParameters + " parameters");
        }
@ -185,9 +185,6 @@ public final class Server {
        String encoderName = "-".equals(args[14]) ? null : args[14];
        options.setEncoderName(encoderName);

-        boolean powerOffScreenOnClose = Boolean.parseBoolean(args[15]);
-        options.setPowerOffScreenOnClose(powerOffScreenOnClose);
-
        return options;
    }

@ -233,7 +230,7 @@ public final class Server {
            if (encoders != null && encoders.length > 0) {
                Ln.e("Try to use one of the available encoders:");
                for (MediaCodecInfo encoder : encoders) {
-                    Ln.e("    scrcpy --encoder '" + encoder.getName() + "'");
+                    Ln.e("    scrcpy --encoder-name '" + encoder.getName() + "'");
                }
            }
        }
--- a/server/src/main/java/com/genymobile/scrcpy/wrappers/ActivityManager.java
+++ b/server/src/main/java/com/genymobile/scrcpy/wrappers/ActivityManager.java
@ -14,7 +14,7 @@ public class ActivityManager {

    private final IInterface manager;
    private Method getContentProviderExternalMethod;
-    private boolean getContentProviderExternalMethodNewVersion = true;
+    private boolean getContentProviderExternalMethodLegacy;
    private Method removeContentProviderExternalMethod;

    public ActivityManager(IInterface manager) {
@ -29,7 +29,7 @@ public class ActivityManager {
            } catch (NoSuchMethodException e) {
                // old version
                getContentProviderExternalMethod = manager.getClass().getMethod("getContentProviderExternal", String.class, int.class, IBinder.class);
-                getContentProviderExternalMethodNewVersion = false;
+                getContentProviderExternalMethodLegacy = true;
            }
        }
        return getContentProviderExternalMethod;
@ -46,7 +46,7 @@ public class ActivityManager {
        try {
            Method method = getGetContentProviderExternalMethod();
            Object[] args;
-            if (getContentProviderExternalMethodNewVersion) {
+            if (!getContentProviderExternalMethodLegacy) {
                // new version
                args = new Object[]{name, ServiceManager.USER_ID, token, null};
            } else {
--- a/server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java
+++ b/server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java
@ -2,7 +2,6 @@ package com.genymobile.scrcpy.wrappers;

 import com.genymobile.scrcpy.Ln;

-import android.annotation.SuppressLint;
 import android.os.Bundle;
 import android.os.IBinder;

@ -38,8 +37,6 @@ 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;
@ -49,61 +46,42 @@ public class ContentProvider implements Closeable {

    private Method getCallMethod() throws NoSuchMethodException {
        if (callMethod == null) {
+
            try {
-                @SuppressLint("PrivateApi")
-                Class<?> attributionSourceClass = Class.forName("android.content.AttributionSource");
-                callMethod = provider.getClass().getMethod("call", attributionSourceClass, String.class, String.class, String.class, Bundle.class);
-            } catch (NoSuchMethodException | ClassNotFoundException e0) {
+                callMethod = provider.getClass()
+                        .getMethod("call", String.class, String.class, String.class, String.class, String.class, Bundle.class);
+                callMethodVersion = 0;
+            } catch (NoSuchMethodException e) {
                // old versions
                try {
-                    callMethod = provider.getClass()
-                            .getMethod("call", String.class, String.class, String.class, String.class, String.class, Bundle.class);
+                    callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, String.class, Bundle.class);
                    callMethodVersion = 1;
-                } catch (NoSuchMethodException e1) {
-                    try {
-                        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;
-                    }
+                } catch (NoSuchMethodException e2) {
+                    callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, Bundle.class);
+                    callMethodVersion = 2;
                }
            }
        }
        return callMethod;
    }

-    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[]{getAttributionSource(), "settings", callMethod, arg, extras};
-                    break;
-                case 1:
                    args = new Object[]{ServiceManager.PACKAGE_NAME, null, "settings", callMethod, arg, extras};
                    break;
-                case 2:
+                case 1:
                    args = new Object[]{ServiceManager.PACKAGE_NAME, "settings", callMethod, arg, extras};
                    break;
                default:
                    args = new Object[]{ServiceManager.PACKAGE_NAME, callMethod, arg, extras};
                    break;
-            } return (Bundle) method.invoke(provider, args);
-        } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException | ClassNotFoundException | InstantiationException e) {
+            }
+            return (Bundle) method.invoke(provider, args);
+        } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
            Ln.e("Could not invoke method", e);
            return null;
        }
--- a/server/src/main/java/com/genymobile/scrcpy/wrappers/StatusBarManager.java
+++ b/server/src/main/java/com/genymobile/scrcpy/wrappers/StatusBarManager.java
@ -11,8 +11,6 @@ public class StatusBarManager {

    private final IInterface manager;
    private Method expandNotificationsPanelMethod;
-    private Method expandSettingsPanelMethod;
-    private boolean expandSettingsPanelMethodNewVersion = true;
    private Method collapsePanelsMethod;

    public StatusBarManager(IInterface manager) {
@ -26,20 +24,6 @@ public class StatusBarManager {
        return expandNotificationsPanelMethod;
    }

-    private Method getExpandSettingsPanel() throws NoSuchMethodException {
-        if (expandSettingsPanelMethod == null) {
-            try {
-                // Since Android 7: https://android.googlesource.com/platform/frameworks/base.git/+/a9927325eda025504d59bb6594fee8e240d95b01%5E%21/
-                expandSettingsPanelMethod = manager.getClass().getMethod("expandSettingsPanel", String.class);
-            } catch (NoSuchMethodException e) {
-                // old version
-                expandSettingsPanelMethod = manager.getClass().getMethod("expandSettingsPanel");
-                expandSettingsPanelMethodNewVersion = false;
-            }
-        }
-        return expandSettingsPanelMethod;
-    }
-
    private Method getCollapsePanelsMethod() throws NoSuchMethodException {
        if (collapsePanelsMethod == null) {
            collapsePanelsMethod = manager.getClass().getMethod("collapsePanels");
@ -56,21 +40,6 @@ public class StatusBarManager {
        }
    }

-    public void expandSettingsPanel() {
-        try {
-            Method method = getExpandSettingsPanel();
-            if (expandSettingsPanelMethodNewVersion) {
-                // new version
-                method.invoke(manager, (Object) null);
-            } else {
-                // old version
-                method.invoke(manager);
-            }
-        } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
-            Ln.e("Could not invoke method", e);
-        }
-    }
-
    public void collapsePanels() {
        try {
            Method method = getCollapsePanelsMethod();
--- a/server/src/test/java/com/genymobile/scrcpy/ControlMessageReaderTest.java
+++ b/server/src/test/java/com/genymobile/scrcpy/ControlMessageReaderTest.java
@ -154,7 +154,6 @@ public class ControlMessageReaderTest {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);
        dos.writeByte(ControlMessage.TYPE_BACK_OR_SCREEN_ON);
-        dos.writeByte(KeyEvent.ACTION_UP);

        byte[] packet = bos.toByteArray();

@ -162,7 +161,6 @@ public class ControlMessageReaderTest {
        ControlMessage event = reader.next();

        Assert.assertEquals(ControlMessage.TYPE_BACK_OR_SCREEN_ON, event.getType());
-        Assert.assertEquals(KeyEvent.ACTION_UP, event.getAction());
    }

    @Test
@ -182,35 +180,19 @@ public class ControlMessageReaderTest {
    }

    @Test
-    public void testParseExpandSettingsPanelEvent() throws IOException {
+    public void testParseCollapseNotificationPanelEvent() throws IOException {
        ControlMessageReader reader = new ControlMessageReader();

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);
-        dos.writeByte(ControlMessage.TYPE_EXPAND_SETTINGS_PANEL);
+        dos.writeByte(ControlMessage.TYPE_COLLAPSE_NOTIFICATION_PANEL);

        byte[] packet = bos.toByteArray();

        reader.readFrom(new ByteArrayInputStream(packet));
        ControlMessage event = reader.next();

-        Assert.assertEquals(ControlMessage.TYPE_EXPAND_SETTINGS_PANEL, event.getType());
-    }
-
-    @Test
-    public void testParseCollapsePanelsEvent() throws IOException {
-        ControlMessageReader reader = new ControlMessageReader();
-
-        ByteArrayOutputStream bos = new ByteArrayOutputStream();
-        DataOutputStream dos = new DataOutputStream(bos);
-        dos.writeByte(ControlMessage.TYPE_COLLAPSE_PANELS);
-
-        byte[] packet = bos.toByteArray();
-
-        reader.readFrom(new ByteArrayInputStream(packet));
-        ControlMessage event = reader.next();
-
-        Assert.assertEquals(ControlMessage.TYPE_COLLAPSE_PANELS, event.getType());
+        Assert.assertEquals(ControlMessage.TYPE_COLLAPSE_NOTIFICATION_PANEL, event.getType());
    }

    @Test
Author	SHA1	Message	Date
Romain Vimont	5f2cf12acf	Add intermediate frame in video buffer There were only two frames simultaneously: - one used by the decoder; - one used by the renderer. When the decoder finished decoding a frame, it swapped it with the rendering frame. Adding a third frame provides several benefits: - the decoder do not have to wait for the renderer to release the mutex; - it simplifies the video_buffer API; - it makes the rendering frame valid until the next call to video_buffer_take_rendering_frame(), which will be useful for swscaling on window resize.	2021-02-04 08:12:22 +01:00
Romain Vimont	2a3c6b64dd	Assert non-recursive usage of mutexes	2021-02-04 08:12:22 +01:00
Romain Vimont	a9582b1d43	Add mutex assertions	2021-02-04 08:12:22 +01:00
Romain Vimont	fa3e84b700	Expose mutex assertions Add a function to assert that the mutex is held (or not).	2021-02-04 08:12:22 +01:00
Romain Vimont	1521de9051	Expose thread id	2021-02-04 08:12:22 +01:00
Romain Vimont	eabaabdb78	Wrap SDL thread functions into scrcpy-specific API The goal is to expose a consistent API for system tools, and paves the way to make the "core" independant of SDL in the future.	2021-02-04 08:12:22 +01:00
Romain Vimont	8b48003074	Replace SDL_strdup() by strdup() The functions SDL_malloc(), SDL_free() and SDL_strdup() were used only because strdup() was not available everywhere. Now that it is available, use the native version of these functions.	2021-02-04 08:12:22 +01:00
Romain Vimont	74bd25a0ed	Provide strdup() compat Make strdup() available on all platforms.	2021-02-04 08:12:22 +01:00