Log server pushed

Now that "adb push" stdout is disabled, add a log to notify server
pushed.

BUILD.md

@@ -270,10 +270,10 @@ install` must be run as root)._
 
 #### Option 2: Use prebuilt server
 
- - [`scrcpy-server-v1.19`][direct-scrcpy-server]  
-   _(SHA-256: 876f9322182e6aac6a58db1334f4225855ef3a17eaebc80aab6601d9d1ecb867)_
+ - [`scrcpy-server-v1.20`][direct-scrcpy-server]  
+   _(SHA-256: b20aee4951f99b060c4a44000ba94de973f9604758ef62beb253b371aad3df34)_
 
-[direct-scrcpy-server]: https://github.com/Genymobile/scrcpy/releases/download/v1.19/scrcpy-server-v1.19
+[direct-scrcpy-server]: https://github.com/Genymobile/scrcpy/releases/download/v1.20/scrcpy-server-v1.20
 
 Download the prebuilt server somewhere, and specify its path during the Meson
 configuration:

FAQ.it.md

@@ -140,6 +140,24 @@ Potresti anche dover configurare il [comportamento di ridimensionamento][scaling
 [scaling behavior]: https://github.com/Genymobile/scrcpy/issues/40#issuecomment-424466723
 
 
+### Problema con Wayland
+
+Per impostazione predefinita, SDL utilizza x11 su Linux. Il [video driver] può essere cambiato attraversio la variabile d'ambiente `SDL_VIDEODRIVER`:
+
+[video driver]: https://wiki.libsdl.org/FAQUsingSDL#how_do_i_choose_a_specific_video_driver
+
+```bash
+export SDL_VIDEODRIVER=wayland
+scrcpy
+```
+
+Su alcune distribuzioni (almeno Fedora), il pacchetto `libdecor` deve essere installato manualmente.
+
+Vedi le issues [#2554] e [#2559].
+
+[#2554]: https://github.com/Genymobile/scrcpy/issues/2554
+[#2559]: https://github.com/Genymobile/scrcpy/issues/2559
+
 
 ### Crash del compositore KWin
 

FAQ.md

@@ -222,6 +222,27 @@ scrcpy -m 800
 You could also try another [encoder](README.md#encoder).
 
 
+If you encounter this exception on Android 12, then just upgrade to scrcpy >=
+1.18 (see [#2129]):
+
+```
+> ERROR: Exception on thread Thread[main,5,main]
+java.lang.AssertionError: java.lang.reflect.InvocationTargetException
+    at com.genymobile.scrcpy.wrappers.SurfaceControl.setDisplaySurface(SurfaceControl.java:75)
+    ...
+Caused by: java.lang.reflect.InvocationTargetException
+    at java.lang.reflect.Method.invoke(Native Method)
+    at com.genymobile.scrcpy.wrappers.SurfaceControl.setDisplaySurface(SurfaceControl.java:73)
+    ... 7 more
+Caused by: java.lang.IllegalArgumentException: displayToken must not be null
+    at android.view.SurfaceControl$Transaction.setDisplaySurface(SurfaceControl.java:3067)
+    at android.view.SurfaceControl.setDisplaySurface(SurfaceControl.java:2147)
+    ... 9 more
+```
+
+[#2129]: https://github.com/Genymobile/scrcpy/issues/2129
+
+
 ## Command line on Windows
 
 Some Windows users are not familiar with the command line. Here is how to open a
@@ -262,6 +283,6 @@ to add some arguments.
 
 This FAQ is available in other languages:
 
- - [Italiano (Italiano, `it`) - v1.17](FAQ.it.md)
+ - [Italiano (Italiano, `it`) - v1.19](FAQ.it.md)
  - [한국어 (Korean, `ko`) - v1.11](FAQ.ko.md)
  - [简体中文 (Simplified Chinese, `zh-Hans`) - v1.18](FAQ.zh-Hans.md)

README.it.md

@@ -1,6 +1,6 @@
 _Apri il [README](README.md) originale e sempre aggiornato._
 
-# scrcpy (v1.17)
+# scrcpy (v1.19)
 
 Questa applicazione fornisce la visualizzazione e il controllo dei dispositivi Android collegati via USB (o [via TCP/IP][article-tcpip]). Non richiede alcun accesso _root_.
 Funziona su _GNU/Linux_, _Windows_ e _macOS_.
@@ -205,10 +205,11 @@ Se anche `--max-size` è specificata, il ridimensionamento è applicato dopo il
 Per bloccare l'orientamento della trasmissione:
 
 ```bash
-scrcpy --lock-video-orientation 0   # orientamento naturale
-scrcpy --lock-video-orientation 1   # 90° antiorario
-scrcpy --lock-video-orientation 2   # 180°
-scrcpy --lock-video-orientation 3   # 90° orario
+scrcpy --lock-video-orientation     # orientamento iniziale (corrente)
+scrcpy --lock-video-orientation=0   # orientamento naturale
+scrcpy --lock-video-orientation=1   # 90° antiorario
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 90° orario
 ```
 
 Questo influisce sull'orientamento della registrazione.
@@ -231,7 +232,9 @@ Per elencare i codificatori disponibili puoi immettere un nome di codificatore n
 scrcpy --encoder _
 ```
 
-### Registrazione
+### Cattura
+
+#### Registrazione
 
 È possibile registrare lo schermo durante la trasmissione:
 
@@ -253,6 +256,75 @@ I "fotogrammi saltati" sono registrati nonostante non siano mostrati in tempo re
 [packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
 
 
+#### v4l2loopback
+
+Su Linux è possibile inviare il flusso video ad un dispositivo v4l2 loopback, cosicchè un dispositivo Android possa essere aperto come una webcam da qualsiasi strumento compatibile con v4l2.
+
+Il modulo `v4l2loopback` deve essere installato:
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+Per creare un dispositvo v4l2:
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+Questo creerà un nuovo dispositivo video in `/dev/videoN` dove `N` è un intero (più [opzioni](https://github.com/umlaeute/v4l2loopback#options) sono disponibili per crere più dispositivi o dispositivi con ID specifici).
+
+Per elencare i dispositvi attivati:
+
+```bash
+# necessita del pacchetto v4l-utils
+v4l2-ctl --list-devices
+
+# semplice ma potrebbe essere sufficiente
+ls /dev/video*
+```
+
+Per avviare scrcpy utilizzando un v4l2 sink:
+
+```bash
+scrcpy --v4l2-sink=/dev/videoN
+scrcpy --v4l2-sink=/dev/videoN --no-display  # disabilita la finestra di trasmissione
+scrcpy --v4l2-sink=/dev/videoN -N            # versione corta
+```
+
+(sostituisci `N` con l'ID del dispositivo, controlla con `ls /dev/video*`)
+
+Una volta abilitato, puoi aprire il tuo flusso video con uno strumento compatibile con v4l2:
+
+```bash
+ffplay -i /dev/videoN
+vlc v4l2:///dev/videoN   # VLC potrebbe aggiungere del ritardo per il buffer
+```
+
+Per esempio potresti catturare il video in [OBS].
+
+[OBS]: https://obsproject.com/
+
+
+#### Buffering
+
+È possibile aggiungere del buffer. Questo aumenta la latenza ma riduce il jitter (vedi [#2464]).
+
+[#2464]: https://github.com/Genymobile/scrcpy/issues/2464
+
+L'opzione è disponibile per il buffer della visualizzazione:
+
+```bash
+scrcpy --display-buffer=50  # aggiungi 50 ms di buffer per la visualizzazione
+```
+
+e per il V4L2 sink:
+
+```bash
+scrcpy --v4l2-buffer=500    #  aggiungi 50 ms di buffer per il v4l2 sink
+```
+
+
 ### Connessione
 
 #### Wireless
@@ -479,15 +551,6 @@ scrcpy --turn-screen-off --stay-awake
 scrcpy -Sw
 ```
 
-#### Renderizzare i fotogrammi scaduti
-
-Per minimizzare la latenza _scrcpy_ renderizza sempre l'ultimo fotogramma decodificato disponibile in maniera predefinita e tralascia quelli precedenti.
-
-Per forzare la renderizzazione di tutti i fotogrammi (a costo di una possibile latenza superiore), utilizzare:
-
-```bash
-scrcpy --render-expired-frames
-```
 
 #### Mostrare i tocchi
 
@@ -607,14 +670,14 @@ Non c'è alcuna risposta visiva, un log è stampato nella console.
 
 #### Trasferimento di file verso il dispositivo
 
-Per trasferire un file in `/sdcard/` del dispositivo trascina e rilascia un file (non APK) nella finestra di _scrcpy_.
+Per trasferire un file in `/sdcard/Download` del dispositivo trascina e rilascia un file (non APK) nella finestra di _scrcpy_.
 
 Non c'è alcuna risposta visiva, un log è stampato nella console.
 
 La cartella di destinazione può essere cambiata all'avvio:
 
 ```bash
-scrcpy --push-target=/sdcard/Download/
+scrcpy --push-target=/sdcard/Movies/
 ```
 
 
@@ -653,10 +716,10 @@ _<kbd>[Super]</kbd> è il pulsante <kbd>Windows</kbd> o <kbd>Cmd</kbd>._
  | Rotazione schermo a sinistra                         | <kbd>MOD</kbd>+<kbd>←</kbd> _(sinistra)_
  | Rotazione schermo a destra                        | <kbd>MOD</kbd>+<kbd>→</kbd> _(destra)_
  | Ridimensiona finestra a 1:1 (pixel-perfect)        | <kbd>MOD</kbd>+<kbd>g</kbd>
- | Ridimensiona la finestra per rimuovere i bordi neri       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Doppio click¹_
+ | Ridimensiona la finestra per rimuovere i bordi neri       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Doppio click sinistro¹_
  | Premi il tasto `HOME`                             | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Click centrale_
  | Premi il tasto `BACK`                             | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Click destro²_
- | Premi il tasto `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd>
+ | Premi il tasto `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd> \| _4° click³_
  | Premi il tasto `MENU` (sblocca lo schermo)             | <kbd>MOD</kbd>+<kbd>m</kbd>
  | Premi il tasto `VOLUME_UP`                        | <kbd>MOD</kbd>+<kbd>↑</kbd> _(su)_
  | Premi il tasto `VOLUME_DOWN`                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(giù)_
@@ -665,18 +728,26 @@ _<kbd>[Super]</kbd> è il pulsante <kbd>Windows</kbd> o <kbd>Cmd</kbd>._
  | Spegni lo schermo del dispositivo (continua a trasmettere)     | <kbd>MOD</kbd>+<kbd>o</kbd>
  | Accendi lo schermo del dispositivo                       | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
  | Ruota lo schermo del dispositivo                        | <kbd>MOD</kbd>+<kbd>r</kbd>
- | Espandi il pannello delle notifiche                   | <kbd>MOD</kbd>+<kbd>n</kbd>
- | Chiudi il pannello delle notifiche                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
- | Copia negli appunti³                          | <kbd>MOD</kbd>+<kbd>c</kbd>
- | Taglia negli appunti³                           | <kbd>MOD</kbd>+<kbd>x</kbd>
- | Sincronizza gli appunti e incolla³           | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | Espandi il pannello delle notifiche                   | <kbd>MOD</kbd>+<kbd>n</kbd> \| _5° click³_
+ | Espandi il pannello delle impostazioni                   | <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _Doppio 5° click³_
+ | Chiudi pannelli                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copia negli appunti⁴                          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Taglia negli appunti⁴                           | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Sincronizza gli appunti e incolla⁴           | <kbd>MOD</kbd>+<kbd>v</kbd>
  | Inietta il testo degli appunti del computer              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
  | Abilita/Disabilita il contatore FPS (su stdout)      | <kbd>MOD</kbd>+<kbd>i</kbd>
  | Pizzica per zoomare                               | <kbd>Ctrl</kbd>+_click e trascina_
 
 _¹Doppio click sui bordi neri per rimuoverli._  
 _²Il tasto destro accende lo schermo se era spento, preme BACK in caso contrario._  
-_³Solo in Android >= 7._
+_³4° e 5° pulsante del mouse, se il tuo mouse ne dispone._  
+_⁴Solo in Android >= 7._
+
+Le scorciatoie con pulsanti ripetuti sono eseguite rilasciando e premendo il pulsante una seconda volta. Per esempio, per eseguire "Espandi il pannello delle impostazioni":
+
+1. Premi e tieni premuto <kbd>MOD</kbd>.
+2. Poi premi due volte <kbd>n</kbd>.
+3. Infine rilascia <kbd>MOD</kbd>.
 
 Tutte le scorciatoie <kbd>Ctrl</kbd>+_tasto_ sono inoltrate al dispositivo, così sono gestite dall'applicazione attiva.
 

README.jp.md

@@ -1,6 +1,6 @@
 _Only the original [README](README.md) is guaranteed to be up-to-date._
 
-# scrcpy (v1.17)
+# scrcpy (v1.19)
 
 このアプリケーションはUSB(もしくは[TCP/IP経由][article-tcpip])で接続されたAndroidデバイスの表示と制御を提供します。このアプリケーションは _root_ でのアクセスを必要としません。このアプリケーションは _GNU/Linux_ 、 _Windows_ そして _macOS_ 上で動作します。
 
@@ -103,18 +103,21 @@ scoop install adb    # まだ入手していない場合
 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:
+`PATH`からアクセス可能な`adb`が必要です。もし持っていない場合はインストールしてください。
 
 ```bash
-# Homebrew >= 2.6.0
-brew install --cask android-platform-tools
-
-# Homebrew < 2.6.0
-brew cask install android-platform-tools
+brew 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。
+`adb`は[MacPorts]からでもインストールできます。
 
+```bash
+sudo port install scrcpy
+```
+
+[MacPorts]: https://www.macports.org/
+
+また、[アプリケーションをビルド][BUILD]することも可能です。
 
 ## 実行
 
@@ -184,10 +187,11 @@ scrcpy --crop 1224:1440:0:0   # オフセット位置(0,0)で1224x1440
 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
+scrcpy --lock-video-orientation     # 現在の向き
+scrcpy --lock-video-orientation=0   # 自然な向き
+scrcpy --lock-video-orientation=1   # 90°反時計回り
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 90°時計回り
 ```
 
 この設定は録画の向きに影響します。
@@ -210,7 +214,9 @@ scrcpy --encoder OMX.qcom.video.encoder.avc
 scrcpy --encoder _
 ```
 
-### 録画
+### キャプチャ
+
+#### 録画
 
 ミラーリング中に画面の録画をすることが可能です:
 
@@ -233,6 +239,77 @@ scrcpy -Nr file.mkv
 
 [パケット遅延のバリエーション]: https://en.wikipedia.org/wiki/Packet_delay_variation
 
+#### v4l2loopback
+
+Linuxでは、ビデオストリームをv4l2ループバックデバイスに送信することができます。
+v4l2loopbackのデバイスにビデオストリームを送信することで、Androidデバイスをウェブカメラのようにv4l2対応ツールで開くこともできます。
+
+`v4l2loopback` モジュールのインストールが必要です。
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+v4l2デバイスを作成する。
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+これにより、新しいビデオデバイスが `/dev/videoN` に作成されます。（`N` は整数）
+(複数のデバイスや特定のIDのデバイスを作成するために、より多くの[オプション](https://github.com/umlaeute/v4l2loopback#options)が利用可能です。
+多くの[オプション]()が利用可能で複数のデバイスや特定のIDのデバイスを作成できます。
+
+
+有効なデバイスを一覧表示する:
+
+```bash
+# v4l-utilsパッケージが必要
+v4l2-ctl --list-devices
+
+# シンプルですが十分これで確認できます
+ls /dev/video*
+```
+
+v4l2シンクを使用してscrcpyを起動する。
+
+```bash
+scrcpy --v4l2-sink=/dev/videoN
+scrcpy --v4l2-sink=/dev/videoN --no-display  # ミラーリングウィンドウを無効化する
+scrcpy --v4l2-sink=/dev/videoN -N            # 短縮版
+```
+
+(`N` をデバイス ID に置き換えて、`ls /dev/video*` で確認してください)
+有効にすると、v4l2対応のツールでビデオストリームを開けます。
+
+```bash
+ffplay -i /dev/videoN
+vlc v4l2:///dev/videoN   # VLCではバッファリングの遅延が発生する場合があります
+```
+
+例えばですが [OBS]の中にこの映像を取り込めことができます。
+
+[OBS]: https://obsproject.com/
+
+
+#### Buffering
+
+バッファリングを追加することも可能です。これによりレイテンシーは増加しますが、ジッターは減少します。（参照
+[#2464])
+
+[#2464]: https://github.com/Genymobile/scrcpy/issues/2464
+
+このオプションでディスプレイバッファリングを設定できます。
+
+```bash
+scrcpy --display-buffer=50  # ディスプレイに50msのバッファリングを追加する
+```
+
+V4L2の場合はこちらのオプションで設定できます。
+
+```bash
+scrcpy --v4l2-buffer=500    # add 500 ms buffering for v4l2 sink
+```
 
 ### 接続
 
@@ -457,16 +534,6 @@ 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。
@@ -586,14 +653,14 @@ APKをインストールするには、(`.apk`で終わる)APKファイルを _s
 
 #### 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。
+デバイスの`/sdcard/Download`ディレクトリにファイルを送るには、(APKではない)ファイルを _scrcpy_ の画面にドラッグ&ドロップします。
 
 見た目のフィードバックはありません。コンソールにログが出力されます。
 
 転送先ディレクトリを起動時に変更することができます:
 
 ```bash
-scrcpy --push-target /sdcard/foo/bar/
+scrcpy --push-target=/sdcard/Movies/
 ```
 
 
@@ -634,7 +701,7 @@ _<kbd>[Super]</kbd>は通常<kbd>Windows</kbd>もしくは<kbd>Cmd</kbd>キー
  | 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>
+ | `APP_SWITCH`をクリック                       | <kbd>MOD</kbd>+<kbd>s</kbd> \| _4クリック³_
  | `MENU` (画面のアンロック)をクリック            | <kbd>MOD</kbd>+<kbd>m</kbd>
  | `VOLUME_UP`をクリック                        | <kbd>MOD</kbd>+<kbd>↑</kbd> _(上)_
  | `VOLUME_DOWN`をクリック                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(下)_
@@ -643,7 +710,8 @@ _<kbd>[Super]</kbd>は通常<kbd>Windows</kbd>もしくは<kbd>Cmd</kbd>キー
  | 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>
+ | 通知パネルを展開する                          | <kbd>MOD</kbd>+<kbd>n</kbd> \| _5ボタンクリック³_
+ | 設定パネルを展開する                          | <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _5ダブルクリック³_
  | 通知パネルを折りたたむ                        | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
  | クリップボードへのコピー³                     | <kbd>MOD</kbd>+<kbd>c</kbd>
  | クリップボードへのカット³                     | <kbd>MOD</kbd>+<kbd>x</kbd>
@@ -654,11 +722,17 @@ _<kbd>[Super]</kbd>は通常<kbd>Windows</kbd>もしくは<kbd>Cmd</kbd>キー
 
 _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._
+_³4と5はマウスのボタンです、もしあなたのマウスにボタンがあれば使えます._  
+_⁴Android 7以上のみ._
+
+キーを繰り返すショートカットはキーを離して2回目を押したら実行されます。例えば「設定パネルを展開する」を実行する場合は以下のように操作する。
+
+ 1. <kbd>MOD</kbd> キーを押し、押したままにする.
+ 2. その後に <kbd>n</kbd>キーを2回押す.
+ 3. 最後に <kbd>MOD</kbd>キーを離す.
 
 全ての<kbd>Ctrl</kbd>+_キー_ ショートカットはデバイスに転送されます、そのためアクティブなアプリケーションによって処理されます。
 
-
 ## カスタムパス
 
 特定の _adb_ バイナリを使用する場合、そのパスを環境変数`ADB`で構成します:

README.md

@@ -1,26 +1,37 @@
-# scrcpy (v1.19)
+# scrcpy (v1.20)
 
-![icon](data/icon.png)
+<img src="data/icon.svg" width="128" height="128" alt="scrcpy" align="right" />
 
 [Read in another language](#translations)
 
-This application provides display and control of Android devices connected on
-USB (or [over TCP/IP][article-tcpip]). It does not require any _root_ access.
+This application provides display and control of Android devices connected via
+USB (or [over TCP/IP](#wireless)). It does not require any _root_ access.
 It works on _GNU/Linux_, _Windows_ and _macOS_.
 
 ![screenshot](assets/screenshot-debian-600.jpg)
 
 It focuses on:
 
- - **lightness** (native, displays only the device screen)
- - **performance** (30~60fps)
- - **quality** (1920×1080 or above)
- - **low latency** ([35~70ms][lowlatency])
- - **low startup time** (~1 second to display the first image)
- - **non-intrusiveness** (nothing is left installed on the device)
+ - **lightness**: native, displays only the device screen
+ - **performance**: 30~120fps, depending on the device
+ - **quality**: 1920×1080 or above
+ - **low latency**: [35~70ms][lowlatency]
+ - **low startup time**: ~1 second to display the first image
+ - **non-intrusiveness**: nothing is left installed on the device
+ - **user benefits**: no account, no ads, no internet required
+ - **freedom**: free and open source software
 
 [lowlatency]: https://github.com/Genymobile/scrcpy/pull/646
 
+Its features include:
+ - [recording](#recording)
+ - mirroring with [device screen off](#turn-screen-off)
+ - [copy-paste](#copy-paste) in both directions
+ - [configurable quality](#capture-configuration)
+ - device screen [as a webcam (V4L2)](#v4l2loopback) (Linux-only)
+ - [physical keyboard simulation (HID)](#physical-keyboard-simulation-hid)
+   (Linux-only)
+ - and more…
 
 ## Requirements
 
@@ -90,10 +101,10 @@ process][BUILD_simple]).
 For Windows, for simplicity, a prebuilt archive with all the dependencies
 (including `adb`) is available:
 
- - [`scrcpy-win64-v1.19.zip`][direct-win64]  
-   _(SHA-256: 383d6483f25ac0092d4bb9fef6c967351ecd50fc248e0c82932db97d6d32f11b)_
+ - [`scrcpy-win64-v1.20.zip`][direct-win64]  
+   _(SHA-256: 548532b616288bcaeceff6881ad5e6f0928e5ae2b48c380385f03627401cfdba)_
 
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.19/scrcpy-win64-v1.19.zip
+[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.20/scrcpy-win64-v1.20.zip
 
 It is also available in [Chocolatey]:
 
@@ -326,7 +337,9 @@ For example, you could capture the video within [OBS].
 #### Buffering
 
 It is possible to add buffering. This increases latency but reduces jitter (see
-#2464).
+[#2464]).
+
+[#2464]: https://github.com/Genymobile/scrcpy/issues/2464
 
 The option is available for display buffering:
 
@@ -403,17 +416,27 @@ autoadb scrcpy -s '{}'
 
 To connect to a remote device, it is possible to connect a local `adb` client to
 a remote `adb` server (provided they use the same version of the _adb_
-protocol):
+protocol).
+
+First, make sure the ADB server is running on the remote computer:
 
 ```bash
-adb kill-server    # kill the local adb server on 5037
-ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer
+adb start-server
+```
+
+Then, establish a SSH tunnel:
+
+```bash
+# local  5038 --> remote  5037
+# local 27183 <-- remote 27183
+ssh -CN -L5038:localhost:5037 -R27183:localhost:27183 your_remote_computer
 # keep this open
 ```
 
-From another terminal:
+From another terminal, run scrcpy:
 
 ```bash
+export ADB_SERVER_SOCKET=tcp:localhost:5038
 scrcpy
 ```
 
@@ -421,14 +444,16 @@ To avoid enabling remote port forwarding, you could force a forward connection
 instead (notice the `-L` instead of `-R`):
 
 ```bash
-adb kill-server    # kill the local adb server on 5037
-ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer
+# local  5038 --> remote  5037
+# local 27183 --> remote 27183
+ssh -CN -L5038:localhost:5037 -L27183:localhost:27183 your_remote_computer
 # keep this open
 ```
 
-From another terminal:
+From another terminal, run scrcpy:
 
 ```bash
+export ADB_SERVER_SOCKET=tcp:localhost:5038
 scrcpy --force-adb-forward
 ```
 
@@ -686,7 +711,7 @@ a location inverted through the center of the screen.
 By default, scrcpy uses Android key or text injection: it works everywhere, but
 is limited to ASCII.
 
-On Linux, scrcpy can simulate a USB physical keyboard on Android to provide a
+On Linux, scrcpy can simulate a physical USB keyboard on Android to provide a
 better input experience (using [USB HID over AOAv2][hid-aoav2]): the virtual
 keyboard is disabled and it works for all characters and IME.
 
@@ -937,10 +962,10 @@ Read the [developers page].
 This README is available in other languages:
 
 - [Indonesian (Indonesia, `id`) - v1.16](README.id.md)
-- [Italiano (Italiano, `it`) - v1.17](README.it.md)
-- [日本語 (Japanese, `jp`) - v1.17](README.jp.md)
+- [Italiano (Italiano, `it`) - v1.19](README.it.md)
+- [日本語 (Japanese, `jp`) - v1.19](README.jp.md)
 - [한국어 (Korean, `ko`) - v1.11](README.ko.md)
-- [português brasileiro (Brazilian Portuguese, `pt-BR`) - v1.17](README.pt-br.md)
+- [Português Brasileiro (Brazilian Portuguese, `pt-BR`) - v1.19](README.pt-br.md)
 - [Español (Spanish, `sp`) - v1.17](README.sp.md)
 - [简体中文 (Simplified Chinese, `zh-Hans`) - v1.17](README.zh-Hans.md)
 - [繁體中文 (Traditional Chinese, `zh-Hant`) - v1.15](README.zh-Hant.md)

README.pt-br.md

@@ -1,6 +1,6 @@
 _Apenas o [README](README.md) original é garantido estar atualizado._
 
-# scrcpy (v1.17)
+# scrcpy (v1.19)
 
 Esta aplicação fornece exibição e controle de dispositivos Android conectados via
 USB (ou [via TCP/IP][article-tcpip]). Não requer nenhum acesso _root_.
@@ -38,6 +38,18 @@ controlá-lo usando teclado e 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>
 
+### Sumário
+
+ - Linux: `apt install scrcpy`
+ - Windows: [baixar][direct-win64]
+ - macOS: `brew install scrcpy`
+
+  Compilar pelos arquivos fontes: [BUILD] ([processo simplificado][BUILD_simple])
+
+[BUILD]: BUILD.md
+[BUILD_simple]: BUILD.md#simple
+
+
 ### Linux
 
 No Debian (_testing_ e _sid_ por enquanto) e Ubuntu (20.04):
@@ -67,9 +79,7 @@ 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 o app manualmente][BUILD] ([processo simplificado][BUILD_simple]).
 
 
 ### Windows
@@ -113,13 +123,18 @@ brew install scrcpy
 Você precisa do `adb`, acessível pelo seu `PATH`. Se você ainda não o tem:
 
 ```bash
-# Homebrew >= 2.6.0
-brew install --cask android-platform-tools
-
-# Homebrew < 2.6.0
-brew cask install android-platform-tools
+brew install android-platform-tools
 ```
 
+Está também disponivel em [MacPorts], que prepara o adb para você:
+
+```bash
+sudo port install scrcpy
+```
+
+[MacPorts]: https://www.macports.org/
+
+
 Você também pode [compilar o app manualmente][BUILD].
 
 
@@ -195,10 +210,11 @@ Se `--max-size` também for especificado, o redimensionamento é aplicado após
 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
+scrcpy --lock-video-orientation     # orientação inicial (Atual)
+scrcpy --lock-video-orientation=0   # orientação natural
+scrcpy --lock-video-orientation=1   # 90° sentido anti-horário
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 90° sentido horário
 ```
 
 Isso afeta a orientação de gravação.
@@ -222,7 +238,9 @@ erro dará os encoders disponíveis:
 scrcpy --encoder _
 ```
 
-### Gravando
+### Captura
+
+#### Gravando
 
 É possível gravar a tela enquanto ocorre o espelhamento:
 
@@ -246,6 +264,79 @@ pacotes][packet delay variation] não impacta o arquivo gravado.
 [packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation
 
 
+#### v4l2loopback
+
+Em Linux, é possível enviar a transmissão do video para um disposiivo v4l2 loopback, assim
+o dispositivo Android pode ser aberto como uma webcam por qualquer ferramneta capaz de v4l2
+
+The module `v4l2loopback` must be installed:
+
+```bash
+sudo apt install v4l2loopback-dkms
+```
+
+Para criar um dispositivo v4l2:
+
+```bash
+sudo modprobe v4l2loopback
+```
+
+Isso criara um novo dispositivo de vídeo em `/dev/videoN`, onde `N` é uma integer
+(mais [opções](https://github.com/umlaeute/v4l2loopback#options) estão disponiveis
+para criar varios dispositivos ou dispositivos com IDs específicas).
+
+Para listar os dispositivos disponíveis:
+
+```bash
+# requer o pacote v4l-utils
+v4l2-ctl --list-devices
+
+# simples, mas pode ser suficiente
+ls /dev/video*
+```
+
+Para iniciar o scrcpy usando o coletor v4l2 (sink):
+
+```bash
+scrcpy --v4l2-sink=/dev/videoN
+scrcpy --v4l2-sink=/dev/videoN --no-display  # desativa a janela espelhada
+scrcpy --v4l2-sink=/dev/videoN -N            # versão curta
+```
+
+(troque `N` pelo ID do dipositivo, verifique com `ls /dev/video*`)
+
+Uma vez ativado, você pode abrir suas trasmissões de videos com uma ferramenta capaz de v4l2:
+
+```bash
+ffplay -i /dev/videoN
+vlc v4l2:///dev/videoN   # VLC pode adicionar um pouco de atraso de buffering
+```
+
+Por exemplo, você pode capturar o video dentro do [OBS].
+
+[OBS]: https://obsproject.com/
+
+
+#### Buffering
+
+É possivel adicionar buffering. Isso aumenta a latência, mas reduz a tenção (jitter) (veja
+[#2464]).
+
+[#2464]: https://github.com/Genymobile/scrcpy/issues/2464
+
+A opção éta disponivel para buffering de exibição:
+
+```bash
+scrcpy --display-buffer=50  # adiciona 50 ms de buffering para a exibição
+```
+
+e coletor V4L2:
+
+```bash
+scrcpy --v4l2-buffer=500    # adiciona 500 ms de buffering para coletor V4L2
+```
+
+,
 ### Conexão
 
 #### Sem fio
@@ -488,18 +579,6 @@ scrcpy -Sw
 ```
 
 
-#### Renderizar frames expirados
-
-Por padrão, para minimizar a latência, _scrcpy_ sempre renderiza o último frame decodificado
-disponível, e descarta o anterior.
-
-Para forçar a renderização de todos os frames (com o custo de um possível aumento de
-latência), use:
-
-```bash
-scrcpy --render-expired-frames
-```
-
 #### Mostrar toques
 
 Para apresentações, pode ser útil mostrar toques físicos (no dispositivo
@@ -647,7 +726,7 @@ Não existe feedback visual, um log é imprimido no console.
 
 #### Enviar arquivo para dispositivo
 
-Para enviar um arquivo para `/sdcard/` no dispositivo, arraste e solte um arquivo (não-APK) para a
+Para enviar um arquivo para `/sdcard/Download/` no dispositivo, arraste e solte um arquivo (não-APK) para a
 janela do _scrcpy_.
 
 Não existe feedback visual, um log é imprimido no console.
@@ -694,12 +773,12 @@ _<kbd>[Super]</kbd> é tipicamente a tecla <kbd>Windows</kbd> ou <kbd>Cmd</kbd>.
  | 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_
+ | Redimensionar janela para 1:1 (pixel-perfeito) | <kbd>MOD</kbd>+<kbd>g</kbd>
+ | Redimensionar janela para remover bordas pretas | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Clique-duplo-esquerdo¹_
  | Clicar em `HOME`                            | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Clique-do-meio_
  | Clicar em `BACK`                            | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Clique-direito²_
- | Clicar em `APP_SWITCH`                      | <kbd>MOD</kbd>+<kbd>s</kbd>
- | Clicar em `MENU` (desbloquear tela          | <kbd>MOD</kbd>+<kbd>m</kbd>
+ | Clicar em `APP_SWITCH`                      | <kbd>MOD</kbd>+<kbd>s</kbd> \| _Clique-do-4.°³_
+ | Clicar em `MENU` (desbloquear tela)         | <kbd>MOD</kbd>+<kbd>m</kbd>
  | Clicar em `VOLUME_UP`                       | <kbd>MOD</kbd>+<kbd>↑</kbd> _(cima)_
  | Clicar em `VOLUME_DOWN`                     | <kbd>MOD</kbd>+<kbd>↓</kbd> _(baixo)_
  | Clicar em `POWER`                           | <kbd>MOD</kbd>+<kbd>p</kbd>
@@ -707,18 +786,27 @@ _<kbd>[Super]</kbd> é tipicamente a tecla <kbd>Windows</kbd> ou <kbd>Cmd</kbd>.
  | 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>
+ | Expandir painel de notificação              | <kbd>MOD</kbd>+<kbd>n</kbd> \| _Clique-do-5.°³_
+ | Expandir painel de configurção              | <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _Clique-duplo-do-5.°³_
+ | Colapsar paineis                            | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copiar para área de transferência⁴          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Recortar para área de transferência⁴        | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Sincronizar áreas de transferência e colar⁴ | <kbd>MOD</kbd>+<kbd>v</kbd>
  | Injetar texto da área de transferência do computador | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
  | Ativar/desativar contador de FPS (em stdout) | <kbd>MOD</kbd>+<kbd>i</kbd>
- | Pinçar para dar zoom                        | <kbd>Ctrl</kbd>+_clicar-e-mover_
+ | Pinçar para dar zoom                        | <kbd>Ctrl</kbd>+_Clicar-e-mover_
 
-_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._
+_¹Clique-duplo-esquerdo na borda preta para remove-la._  
+_²Clique-direito liga a tela caso esteja desligada, pressione BACK caso contrário._  
+_³4.° and 5.° botões do mouse, caso o mouse possua._  
+_⁴Apenas em Android >= 7._
+
+Atalhos com teclas reptidas são executados soltando e precionando a tecla
+uma segunda vez. Por exemplo, para executar "Expandir painel de Configurção":
+
+ 1. Mantenha pressionado <kbd>MOD</kbd>.
+ 2. Depois click duas vezes <kbd>n</kbd>.
+ 3. Finalmente, solte <kbd>MOD</kbd>.
 
 Todos os atalhos <kbd>Ctrl</kbd>+_tecla_ são encaminhados para o dispositivo, para que eles sejam
 tratados pela aplicação ativa.
@@ -729,7 +817,9 @@ tratados pela aplicação ativa.
 Para usar um binário _adb_ específico, configure seu caminho na variável de ambiente
 `ADB`:
 
+```bash
 ADB=/caminho/para/adb scrcpy
+```
 
 Para sobrepor o caminho do arquivo `scrcpy-server`, configure seu caminho em
 `SCRCPY_SERVER_PATH`.
@@ -751,8 +841,6 @@ Um colega me desafiou a encontrar um nome tão impronunciável quanto [gnirehtet
 
 Veja [BUILD].
 
-[BUILD]: BUILD.md
-
 
 ## Problemas comuns
 

app/meson.build

@@ -1,6 +1,7 @@
 src = [
     'src/main.c',
     'src/adb.c',
+    'src/adb_tunnel.c',
     'src/cli.c',
     'src/clock.c',
     'src/compat.c',
@@ -24,18 +25,30 @@ src = [
     'src/server.c',
     'src/stream.c',
     'src/video_buffer.c',
+    'src/util/file.c',
+    'src/util/intr.c',
     'src/util/log.c',
     'src/util/net.c',
+    'src/util/net_intr.c',
     'src/util/process.c',
-    'src/util/str_util.c',
+    'src/util/process_intr.c',
+    'src/util/strbuf.c',
+    'src/util/str.c',
+    'src/util/term.c',
     'src/util/thread.c',
     'src/util/tick.c',
 ]
 
 if host_machine.system() == 'windows'
-    src += [ 'src/sys/win/process.c' ]
+    src += [
+        'src/sys/win/file.c',
+        'src/sys/win/process.c',
+    ]
 else
-    src += [ 'src/sys/unix/process.c' ]
+    src += [
+        'src/sys/unix/file.c',
+        'src/sys/unix/process.c',
+    ]
 endif
 
 v4l2_support = host_machine.system() == 'linux'
@@ -186,7 +199,9 @@ if get_option('buildtype') == 'debug'
             'tests/test_cli.c',
             'src/cli.c',
             'src/options.c',
-            'src/util/str_util.c',
+            'src/util/str.c',
+            'src/util/strbuf.c',
+            'src/util/term.c',
         ]],
         ['test_clock', [
             'tests/test_clock.c',
@@ -195,7 +210,8 @@ if get_option('buildtype') == 'debug'
         ['test_control_msg_serialize', [
             'tests/test_control_msg_serialize.c',
             'src/control_msg.c',
-            'src/util/str_util.c',
+            'src/util/str.c',
+            'src/util/strbuf.c',
         ]],
         ['test_device_msg_deserialize', [
             'tests/test_device_msg_deserialize.c',
@@ -204,9 +220,14 @@ if get_option('buildtype') == 'debug'
         ['test_queue', [
             'tests/test_queue.c',
         ]],
-        ['test_strutil', [
-            'tests/test_strutil.c',
-            'src/util/str_util.c',
+        ['test_strbuf', [
+            'tests/test_strbuf.c',
+            'src/util/strbuf.c',
+        ]],
+        ['test_str', [
+            'tests/test_str.c',
+            'src/util/str.c',
+            'src/util/strbuf.c',
         ]],
     ]
 

app/src/adb.c

@@ -5,8 +5,10 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "util/file.h"
 #include "util/log.h"
-#include "util/str_util.h"
+#include "util/process_intr.h"
+#include "util/str.h"
 
 static const char *adb_command;
 
@@ -68,7 +70,7 @@ show_adb_installation_msg() {
         {"pacman", "pacman -S android-tools"},
     };
     for (size_t i = 0; i < ARRAY_LEN(pkg_managers); ++i) {
-        if (search_executable(pkg_managers[i].binary)) {
+        if (sc_file_executable_exists(pkg_managers[i].binary)) {
             LOGI("You may install 'adb' by \"%s\"", pkg_managers[i].command);
             return;
         }
@@ -80,7 +82,7 @@ show_adb_installation_msg() {
 }
 
 static void
-show_adb_err_msg(enum process_result err, const char *const argv[]) {
+show_adb_err_msg(enum sc_process_result err, const char *const argv[]) {
 #define MAX_COMMAND_STRING_LEN 1024
     char *buf = malloc(MAX_COMMAND_STRING_LEN);
     if (!buf) {
@@ -89,18 +91,18 @@ show_adb_err_msg(enum process_result err, const char *const argv[]) {
     }
 
     switch (err) {
-        case PROCESS_ERROR_GENERIC:
+        case SC_PROCESS_ERROR_GENERIC:
             argv_to_string(argv, buf, MAX_COMMAND_STRING_LEN);
             LOGE("Failed to execute: %s", buf);
             break;
-        case PROCESS_ERROR_MISSING_BINARY:
+        case SC_PROCESS_ERROR_MISSING_BINARY:
             argv_to_string(argv, buf, MAX_COMMAND_STRING_LEN);
             LOGE("Command not found: %s", buf);
             LOGE("(make 'adb' accessible from your PATH or define its full"
                  "path in the ADB environment variable)");
             show_adb_installation_msg();
             break;
-        case PROCESS_SUCCESS:
+        case SC_PROCESS_SUCCESS:
             // do nothing
             break;
     }
@@ -108,16 +110,15 @@ show_adb_err_msg(enum process_result err, const char *const argv[]) {
     free(buf);
 }
 
-process_t
-adb_execute_redirect(const char *serial, const char *const adb_cmd[],
-                     size_t len, pipe_t *pipe_stdin, pipe_t *pipe_stdout,
-                     pipe_t *pipe_stderr) {
+static sc_pid
+adb_execute_p(const char *serial, const char *const adb_cmd[],
+              size_t len, unsigned inherit, sc_pipe *pout) {
     int i;
-    process_t process;
+    sc_pid pid;
 
     const char **argv = malloc((len + 4) * sizeof(*argv));
     if (!argv) {
-        return PROCESS_NONE;
+        return SC_PROCESS_NONE;
     }
 
     argv[0] = get_adb_command();
@@ -131,149 +132,185 @@ adb_execute_redirect(const char *serial, const char *const adb_cmd[],
 
     memcpy(&argv[i], adb_cmd, len * sizeof(const char *));
     argv[len + i] = NULL;
-    enum process_result r =
-        process_execute_redirect(argv, &process, pipe_stdin, pipe_stdout,
-                                 pipe_stderr);
-    if (r != PROCESS_SUCCESS) {
+    enum sc_process_result r =
+        sc_process_execute_p(argv, &pid, inherit, NULL, pout, NULL);
+    if (r != SC_PROCESS_SUCCESS) {
         show_adb_err_msg(r, argv);
-        process = PROCESS_NONE;
+        pid = SC_PROCESS_NONE;
     }
 
     free(argv);
-    return process;
+    return pid;
 }
 
-process_t
-adb_execute(const char *serial, const char *const adb_cmd[], size_t len) {
-    return adb_execute_redirect(serial, adb_cmd, len, NULL, NULL, NULL);
+sc_pid
+adb_execute(const char *serial, const char *const adb_cmd[], size_t len,
+            unsigned inherit) {
+    return adb_execute_p(serial, adb_cmd, len, inherit, NULL);
 }
 
-process_t
-adb_forward(const char *serial, uint16_t local_port,
-            const char *device_socket_name) {
+static sc_pid
+adb_exec_forward(const char *serial, uint16_t local_port,
+                 const char *device_socket_name, unsigned inherit) {
     char local[4 + 5 + 1]; // tcp:PORT
     char remote[108 + 14 + 1]; // localabstract:NAME
     sprintf(local, "tcp:%" PRIu16, local_port);
     snprintf(remote, sizeof(remote), "localabstract:%s", device_socket_name);
     const char *const adb_cmd[] = {"forward", local, remote};
-    return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
+    return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), inherit);
 }
 
-process_t
-adb_forward_remove(const char *serial, uint16_t local_port) {
+static sc_pid
+adb_exec_forward_remove(const char *serial, uint16_t local_port,
+                        unsigned inherit) {
     char local[4 + 5 + 1]; // tcp:PORT
     sprintf(local, "tcp:%" PRIu16, local_port);
     const char *const adb_cmd[] = {"forward", "--remove", local};
-    return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
+    return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), inherit);
 }
 
-process_t
-adb_reverse(const char *serial, const char *device_socket_name,
-            uint16_t local_port) {
+static sc_pid
+adb_exec_reverse(const char *serial, const char *device_socket_name,
+                 uint16_t local_port, unsigned inherit) {
     char local[4 + 5 + 1]; // tcp:PORT
     char remote[108 + 14 + 1]; // localabstract:NAME
     sprintf(local, "tcp:%" PRIu16, local_port);
     snprintf(remote, sizeof(remote), "localabstract:%s", device_socket_name);
     const char *const adb_cmd[] = {"reverse", remote, local};
-    return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
+    return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), inherit);
 }
 
-process_t
-adb_reverse_remove(const char *serial, const char *device_socket_name) {
+static sc_pid
+adb_exec_reverse_remove(const char *serial, const char *device_socket_name,
+                        unsigned inherit) {
     char remote[108 + 14 + 1]; // localabstract:NAME
     snprintf(remote, sizeof(remote), "localabstract:%s", device_socket_name);
     const char *const adb_cmd[] = {"reverse", "--remove", remote};
-    return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
+    return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), inherit);
 }
 
-process_t
-adb_push(const char *serial, const char *local, const char *remote) {
+static sc_pid
+adb_exec_push(const char *serial, const char *local, const char *remote,
+              unsigned inherit) {
 #ifdef __WINDOWS__
     // Windows will parse the string, so the paths must be quoted
     // (see sys/win/command.c)
-    local = strquote(local);
+    local = sc_str_quote(local);
     if (!local) {
-        return PROCESS_NONE;
+        return SC_PROCESS_NONE;
     }
-    remote = strquote(remote);
+    remote = sc_str_quote(remote);
     if (!remote) {
         free((void *) local);
-        return PROCESS_NONE;
+        return SC_PROCESS_NONE;
     }
 #endif
 
     const char *const adb_cmd[] = {"push", local, remote};
-    process_t proc = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
+    sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), inherit);
 
 #ifdef __WINDOWS__
     free((void *) remote);
     free((void *) local);
 #endif
 
-    return proc;
+    return pid;
 }
 
-process_t
-adb_install(const char *serial, const char *local) {
+static sc_pid
+adb_exec_install(const char *serial, const char *local, unsigned inherit) {
 #ifdef __WINDOWS__
     // Windows will parse the string, so the local name must be quoted
     // (see sys/win/command.c)
-    local = strquote(local);
+    local = sc_str_quote(local);
     if (!local) {
-        return PROCESS_NONE;
+        return SC_PROCESS_NONE;
     }
 #endif
 
     const char *const adb_cmd[] = {"install", "-r", local};
-    process_t proc = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
+    sc_pid pid = adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd), inherit);
 
 #ifdef __WINDOWS__
     free((void *) local);
 #endif
 
-    return proc;
+    return pid;
 }
 
-static ssize_t
-adb_execute_for_output(const char *serial, const char *const adb_cmd[],
-                       size_t adb_cmd_len, char *buf, size_t buf_len,
-                       const char *name) {
-    pipe_t pipe_stdout;
-    process_t proc = adb_execute_redirect(serial, adb_cmd, adb_cmd_len, NULL,
-                                          &pipe_stdout, NULL);
-
-    ssize_t r = read_pipe_all(pipe_stdout, buf, buf_len);
-    close_pipe(pipe_stdout);
-
-    if (!process_check_success(proc, name, true)) {
-        return -1;
+static sc_pid
+adb_exec_get_serialno(unsigned inherit, sc_pipe *pout) {
+    const char *const adb_cmd[] = {"get-serialno"};
+    return adb_execute_p(NULL, adb_cmd, ARRAY_LEN(adb_cmd), inherit, pout);
 }
 
-    return r;
+bool
+adb_forward(struct sc_intr *intr, const char *serial, uint16_t local_port,
+            const char *device_socket_name, unsigned inherit) {
+    sc_pid pid =
+        adb_exec_forward(serial, local_port, device_socket_name, inherit);
+    return sc_process_check_success_intr(intr, pid, "adb forward", true);
 }
 
-static size_t
-truncate_first_line(char *data, size_t len) {
-    data[len - 1] = '\0';
-    char *eol = strpbrk(data, "\r\n");
-    if (eol) {
-        *eol = '\0';
-        len = eol - data;
+bool
+adb_forward_remove(struct sc_intr *intr, const char *serial,
+                   uint16_t local_port, unsigned inherit) {
+    sc_pid pid = adb_exec_forward_remove(serial, local_port, inherit);
+    return sc_process_check_success_intr(intr, pid, "adb forward --remove",
+                                         true);
 }
-    return len;
+
+bool
+adb_reverse(struct sc_intr *intr, const char *serial,
+            const char *device_socket_name, uint16_t local_port,
+            unsigned inherit) {
+    sc_pid pid =
+        adb_exec_reverse(serial, device_socket_name, local_port, inherit);
+    return sc_process_check_success_intr(intr, pid, "adb reverse", true);
+}
+
+bool
+adb_reverse_remove(struct sc_intr *intr, const char *serial,
+                   const char *device_socket_name, unsigned inherit) {
+    sc_pid pid = adb_exec_reverse_remove(serial, device_socket_name, inherit);
+    return sc_process_check_success_intr(intr, pid, "adb reverse --remove",
+                                         true);
+}
+
+bool
+adb_push(struct sc_intr *intr, const char *serial, const char *local,
+         const char *remote, unsigned inherit) {
+    sc_pid pid = adb_exec_push(serial, local, remote, inherit);
+    return sc_process_check_success_intr(intr, pid, "adb push", true);
+}
+
+bool
+adb_install(struct sc_intr *intr, const char *serial, const char *local,
+            unsigned inherit) {
+    sc_pid pid = adb_exec_install(serial, local, inherit);
+    return sc_process_check_success_intr(intr, pid, "adb install", true);
 }
 
 char *
-adb_get_serialno(void) {
-    char buf[128];
-
-    const char *const adb_cmd[] = {"get-serialno"};
-    ssize_t r = adb_execute_for_output(NULL, adb_cmd, ARRAY_LEN(adb_cmd),
-                                       buf, sizeof(buf), "get-serialno");
-    if (r <= 0) {
+adb_get_serialno(struct sc_intr *intr, unsigned inherit) {
+    sc_pipe pout;
+    sc_pid pid = adb_exec_get_serialno(inherit, &pout);
+    if (pid == SC_PROCESS_NONE) {
+        LOGE("Could not execute \"adb get-serialno\"");
         return NULL;
     }
 
-    truncate_first_line(buf, r);
+    char buf[128];
+    ssize_t r = sc_pipe_read_all_intr(intr, pid, pout, buf, sizeof(buf));
+    sc_pipe_close(pout);
+
+    bool ok =
+        sc_process_check_success_intr(intr, pid, "adb get-serialno", true);
+    if (!ok) {
+        return NULL;
+    }
+
+    sc_str_truncate(buf, r, " \r\n");
+
     return strdup(buf);
 }

app/src/adb.h

@@ -6,38 +6,43 @@
 #include <stdbool.h>
 #include <inttypes.h>
 
-#include "util/process.h"
+#include "util/intr.h"
 
-process_t
-adb_execute(const char *serial, const char *const adb_cmd[], size_t len);
+sc_pid
+adb_execute(const char *serial, const char *const adb_cmd[], size_t len,
+            unsigned inherit);
 
-process_t
-adb_execute_redirect(const char *serial, const char *const adb_cmd[],
-                     size_t len, pipe_t *pipe_stdin, pipe_t *pipe_stdout,
-                     pipe_t *pipe_stderr);
+bool
+adb_forward(struct sc_intr *intr, const char *serial, uint16_t local_port,
+            const char *device_socket_name, unsigned inherit);
 
-process_t
-adb_forward(const char *serial, uint16_t local_port,
-            const char *device_socket_name);
+bool
+adb_forward_remove(struct sc_intr *intr, const char *serial,
+                   uint16_t local_port, unsigned inherit);
 
-process_t
-adb_forward_remove(const char *serial, uint16_t local_port);
+bool
+adb_reverse(struct sc_intr *intr, const char *serial,
+            const char *device_socket_name, uint16_t local_port,
+            unsigned inherit);
 
-process_t
-adb_reverse(const char *serial, const char *device_socket_name,
-            uint16_t local_port);
+bool
+adb_reverse_remove(struct sc_intr *intr, const char *serial,
+                   const char *device_socket_name, unsigned inherit);
 
-process_t
-adb_reverse_remove(const char *serial, const char *device_socket_name);
+bool
+adb_push(struct sc_intr *intr, const char *serial, const char *local,
+         const char *remote, unsigned inherit);
 
-process_t
-adb_push(const char *serial, const char *local, const char *remote);
+bool
+adb_install(struct sc_intr *intr, const char *serial, const char *local,
+            unsigned inherit);
 
-process_t
-adb_install(const char *serial, const char *local);
-
-// Return the result of "adb get-serialno".
+/**
+ * Execute `adb get-serialno`
+ *
+ * Return the result, to be freed by the caller, or NULL on error.
+ */
 char *
-adb_get_serialno(void);
+adb_get_serialno(struct sc_intr *intr, unsigned inherit);
 
 #endif

app/src/adb_tunnel.c

@@ -0,0 +1,165 @@
+#include "adb_tunnel.h"
+
+#include <assert.h>
+
+#include "adb.h"
+#include "util/log.h"
+#include "util/net_intr.h"
+#include "util/process_intr.h"
+
+#define SC_SOCKET_NAME "scrcpy"
+
+static bool
+listen_on_port(struct sc_intr *intr, sc_socket socket, uint16_t port) {
+    return net_listen_intr(intr, socket, IPV4_LOCALHOST, port, 1);
+}
+
+static bool
+enable_tunnel_reverse_any_port(struct sc_adb_tunnel *tunnel,
+                               struct sc_intr *intr, const char *serial,
+                               struct sc_port_range port_range) {
+    uint16_t port = port_range.first;
+    for (;;) {
+        if (!adb_reverse(intr, serial, SC_SOCKET_NAME, port, SC_STDERR)) {
+            // the command itself failed, it will fail on any port
+            return false;
+        }
+
+        // At the application level, the device part is "the server" because it
+        // serves video stream and control. However, at the network level, the
+        // client listens and the server connects to the client. That way, the
+        // client can listen before starting the server app, so there is no
+        // need to try to connect until the server socket is listening on the
+        // device.
+        sc_socket server_socket = net_socket();
+        if (server_socket != SC_SOCKET_NONE) {
+            bool ok = listen_on_port(intr, server_socket, port);
+            if (ok) {
+                // success
+                tunnel->server_socket = server_socket;
+                tunnel->local_port = port;
+                tunnel->enabled = true;
+                return true;
+            }
+
+            net_close(server_socket);
+        }
+
+        if (sc_intr_is_interrupted(intr)) {
+            // Stop immediately
+            return false;
+        }
+
+        // failure, disable tunnel and try another port
+        if (!adb_reverse_remove(intr, serial, SC_SOCKET_NAME, SC_STDERR)) {
+            LOGW("Could not remove reverse tunnel on port %" PRIu16, port);
+        }
+
+        // check before incrementing to avoid overflow on port 65535
+        if (port < port_range.last) {
+            LOGW("Could not listen on port %" PRIu16", retrying on %" PRIu16,
+                 port, (uint16_t) (port + 1));
+            port++;
+            continue;
+        }
+
+        if (port_range.first == port_range.last) {
+            LOGE("Could not listen on port %" PRIu16, port_range.first);
+        } else {
+            LOGE("Could not listen on any port in range %" PRIu16 ":%" PRIu16,
+                 port_range.first, port_range.last);
+        }
+        return false;
+    }
+}
+
+static bool
+enable_tunnel_forward_any_port(struct sc_adb_tunnel *tunnel,
+                               struct sc_intr *intr, const char *serial,
+                               struct sc_port_range port_range) {
+    tunnel->forward = true;
+
+    uint16_t port = port_range.first;
+    for (;;) {
+        if (adb_forward(intr, serial, port, SC_SOCKET_NAME, SC_STDERR)) {
+            // success
+            tunnel->local_port = port;
+            tunnel->enabled = true;
+            return true;
+        }
+
+        if (sc_intr_is_interrupted(intr)) {
+            // Stop immediately
+            return false;
+        }
+
+        if (port < port_range.last) {
+            LOGW("Could not forward port %" PRIu16", retrying on %" PRIu16,
+                 port, (uint16_t) (port + 1));
+            port++;
+            continue;
+        }
+
+        if (port_range.first == port_range.last) {
+            LOGE("Could not forward port %" PRIu16, port_range.first);
+        } else {
+            LOGE("Could not forward any port in range %" PRIu16 ":%" PRIu16,
+                 port_range.first, port_range.last);
+        }
+        return false;
+    }
+}
+
+void
+sc_adb_tunnel_init(struct sc_adb_tunnel *tunnel) {
+    tunnel->enabled = false;
+    tunnel->forward = false;
+    tunnel->server_socket = SC_SOCKET_NONE;
+    tunnel->local_port = 0;
+}
+
+bool
+sc_adb_tunnel_open(struct sc_adb_tunnel *tunnel, struct sc_intr *intr,
+                   const char *serial, struct sc_port_range port_range,
+                   bool force_adb_forward) {
+    assert(!tunnel->enabled);
+
+    if (!force_adb_forward) {
+        // Attempt to use "adb reverse"
+        if (enable_tunnel_reverse_any_port(tunnel, intr, serial, port_range)) {
+            return true;
+        }
+
+        // if "adb reverse" does not work (e.g. over "adb connect"), it
+        // fallbacks to "adb forward", so the app socket is the client
+
+        LOGW("'adb reverse' failed, fallback to 'adb forward'");
+    }
+
+    return enable_tunnel_forward_any_port(tunnel, intr, serial, port_range);
+}
+
+bool
+sc_adb_tunnel_close(struct sc_adb_tunnel *tunnel, struct sc_intr *intr,
+                    const char *serial) {
+    assert(tunnel->enabled);
+
+    bool ret;
+    if (tunnel->forward) {
+        ret = adb_forward_remove(intr, serial, tunnel->local_port, SC_STDERR);
+    } else {
+        ret = adb_reverse_remove(intr, serial, SC_SOCKET_NAME, SC_STDERR);
+
+        assert(tunnel->server_socket != SC_SOCKET_NONE);
+        if (!net_close(tunnel->server_socket)) {
+            LOGW("Could not close server socket");
+        }
+
+        // server_socket is never used anymore
+    }
+
+    // Consider tunnel disabled even if the command failed
+    tunnel->enabled = false;
+
+    return ret;
+}

app/src/adb_tunnel.h

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

app/src/control_msg.c

@@ -7,7 +7,7 @@
 
 #include "util/buffer_util.h"
 #include "util/log.h"
-#include "util/str_util.h"
+#include "util/str.h"
 
 /**
  * Map an enum value to a string based on an array, without crashing on an
@@ -66,7 +66,7 @@ write_position(uint8_t *buf, const struct sc_position *position) {
 // write length (2 bytes) + string (non nul-terminated)
 static size_t
 write_string(const char *utf8, size_t max_len, unsigned char *buf) {
-    size_t len = utf8_truncation_index(utf8, max_len);
+    size_t len = sc_str_utf8_truncation_index(utf8, max_len);
     buffer_write32be(buf, len);
     memcpy(&buf[4], utf8, len);
     return 4 + len;

app/src/events.h

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

app/src/file_handler.c

@@ -5,6 +5,7 @@
 
 #include "adb.h"
 #include "util/log.h"
+#include "util/process_intr.h"
 
 #define DEFAULT_PUSH_TARGET "/sdcard/Download/"
 
@@ -16,6 +17,7 @@ file_handler_request_destroy(struct file_handler_request *req) {
 bool
 file_handler_init(struct file_handler *file_handler, const char *serial,
                   const char *push_target) {
+    assert(serial);
 
     cbuf_init(&file_handler->queue);
 
@@ -30,23 +32,26 @@ file_handler_init(struct file_handler *file_handler, const char *serial,
         return false;
     }
 
-    if (serial) {
+    ok = sc_intr_init(&file_handler->intr);
+    if (!ok) {
+        LOGE("Could not create intr");
+        sc_cond_destroy(&file_handler->event_cond);
+        sc_mutex_destroy(&file_handler->mutex);
+    }
+
     file_handler->serial = strdup(serial);
     if (!file_handler->serial) {
-            LOGW("Could not strdup serial");
+        LOGE("Could not strdup serial");
+        sc_intr_destroy(&file_handler->intr);
         sc_cond_destroy(&file_handler->event_cond);
         sc_mutex_destroy(&file_handler->mutex);
         return false;
     }
-    } else {
-        file_handler->serial = NULL;
-    }
 
     // lazy initialization
     file_handler->initialized = false;
 
     file_handler->stopped = false;
-    file_handler->current_process = PROCESS_NONE;
 
     file_handler->push_target = push_target ? push_target : DEFAULT_PUSH_TARGET;
 
@@ -57,6 +62,7 @@ void
 file_handler_destroy(struct file_handler *file_handler) {
     sc_cond_destroy(&file_handler->event_cond);
     sc_mutex_destroy(&file_handler->mutex);
+    sc_intr_destroy(&file_handler->intr);
     free(file_handler->serial);
 
     struct file_handler_request req;
@@ -65,16 +71,6 @@ file_handler_destroy(struct file_handler *file_handler) {
     }
 }
 
-static process_t
-install_apk(const char *serial, const char *file) {
-    return adb_install(serial, file);
-}
-
-static process_t
-push_file(const char *serial, const char *file, const char *push_target) {
-    return adb_push(serial, file, push_target);
-}
-
 bool
 file_handler_request(struct file_handler *file_handler,
                      file_handler_action_t action, char *file) {
@@ -106,10 +102,16 @@ file_handler_request(struct file_handler *file_handler,
 static int
 run_file_handler(void *data) {
     struct file_handler *file_handler = data;
+    struct sc_intr *intr = &file_handler->intr;
+
+    const char *serial = file_handler->serial;
+    assert(serial);
+
+    const char *push_target = file_handler->push_target;
+    assert(push_target);
 
     for (;;) {
         sc_mutex_lock(&file_handler->mutex);
-        file_handler->current_process = PROCESS_NONE;
         while (!file_handler->stopped && cbuf_is_empty(&file_handler->queue)) {
             sc_cond_wait(&file_handler->event_cond, &file_handler->mutex);
         }
@@ -122,43 +124,28 @@ run_file_handler(void *data) {
         bool non_empty = cbuf_take(&file_handler->queue, &req);
         assert(non_empty);
         (void) non_empty;
-
-        process_t process;
-        if (req.action == ACTION_INSTALL_APK) {
-            LOGI("Installing %s...", req.file);
-            process = install_apk(file_handler->serial, req.file);
-        } else {
-            LOGI("Pushing %s...", req.file);
-            process = push_file(file_handler->serial, req.file,
-                                file_handler->push_target);
-        }
-        file_handler->current_process = process;
         sc_mutex_unlock(&file_handler->mutex);
 
         if (req.action == ACTION_INSTALL_APK) {
-            if (process_check_success(process, "adb install", false)) {
+            LOGI("Installing %s...", req.file);
+            bool ok =
+                adb_install(intr, serial, req.file, SC_STDOUT | SC_STDERR);
+            if (ok) {
                 LOGI("%s successfully installed", req.file);
             } else {
                 LOGE("Failed to install %s", req.file);
             }
         } else {
-            if (process_check_success(process, "adb push", false)) {
-                LOGI("%s successfully pushed to %s", req.file,
-                                                     file_handler->push_target);
+            LOGI("Pushing %s...", req.file);
+            bool ok = adb_push(intr, serial, req.file, push_target,
+                               SC_STDOUT | SC_STDERR);
+            if (ok) {
+                LOGI("%s successfully pushed to %s", req.file, push_target);
             } else {
-                LOGE("Failed to push %s to %s", req.file,
-                                                file_handler->push_target);
+                LOGE("Failed to push %s to %s", req.file, push_target);
             }
         }
 
-        sc_mutex_lock(&file_handler->mutex);
-        // Close the process (it is necessary already terminated)
-        // Execute this call with mutex locked to avoid race conditions with
-        // file_handler_stop()
-        process_close(file_handler->current_process);
-        file_handler->current_process = PROCESS_NONE;
-        sc_mutex_unlock(&file_handler->mutex);
-
         file_handler_request_destroy(&req);
     }
     return 0;
@@ -183,11 +170,7 @@ file_handler_stop(struct file_handler *file_handler) {
     sc_mutex_lock(&file_handler->mutex);
     file_handler->stopped = true;
     sc_cond_signal(&file_handler->event_cond);
-    if (file_handler->current_process != PROCESS_NONE) {
-        if (!process_terminate(file_handler->current_process)) {
-            LOGW("Could not terminate push/install process");
-        }
-    }
+    sc_intr_interrupt(&file_handler->intr);
     sc_mutex_unlock(&file_handler->mutex);
 }
 

app/src/file_handler.h

@@ -8,6 +8,7 @@
 #include "adb.h"
 #include "util/cbuf.h"
 #include "util/thread.h"
+#include "util/intr.h"
 
 typedef enum {
     ACTION_INSTALL_APK,
@@ -29,8 +30,9 @@ struct file_handler {
     sc_cond event_cond;
     bool stopped;
     bool initialized;
-    process_t current_process;
     struct file_handler_request_queue queue;
+
+    struct sc_intr intr;
 };
 
 bool

app/src/hid_keyboard.c

@@ -307,7 +307,7 @@ sc_key_processor_process_key(struct sc_key_processor *kp,
             // requested. Wait a bit so that the clipboard is set before
             // injecting Ctrl+v via HID, otherwise it would paste the old
             // clipboard content.
-            hid_event.delay = SC_TICK_FROM_MS(2);
+            hid_event.delay = SC_TICK_FROM_MS(5);
         }
 
         if (!sc_aoa_push_hid_event(kb->aoa, &hid_event)) {

app/src/icon.c

@@ -8,9 +8,9 @@
 
 #include "config.h"
 #include "compat.h"
+#include "util/file.h"
 #include "util/log.h"
-#include "util/process.h"
-#include "util/str_util.h"
+#include "util/str.h"
 
 #define SCRCPY_PORTABLE_ICON_FILENAME "icon.png"
 #define SCRCPY_DEFAULT_ICON_PATH \
@@ -26,7 +26,7 @@ get_icon_path(void) {
     if (icon_path_env) {
         // if the envvar is set, use it
 #ifdef __WINDOWS__
-        char *icon_path = utf8_from_wide_char(icon_path_env);
+        char *icon_path = sc_str_from_wchars(icon_path_env);
 #else
         char *icon_path = strdup(icon_path_env);
 #endif
@@ -46,7 +46,7 @@ get_icon_path(void) {
         return NULL;
     }
 #else
-    char *icon_path = get_local_file_path(SCRCPY_PORTABLE_ICON_FILENAME);
+    char *icon_path = sc_file_get_local_path(SCRCPY_PORTABLE_ICON_FILENAME);
     if (!icon_path) {
         LOGE("Could not get icon path");
         return NULL;
@@ -158,6 +158,12 @@ free_ctx:
     return result;
 }
 
+#if !SDL_VERSION_ATLEAST(2, 0, 10)
+// SDL_PixelFormatEnum has been introduced in SDL 2.0.10. Use int for older SDL
+// versions.
+typedef int SDL_PixelFormatEnum;
+#endif
+
 static SDL_PixelFormatEnum
 to_sdl_pixel_format(enum AVPixelFormat fmt) {
     switch (fmt) {
@@ -172,7 +178,9 @@ to_sdl_pixel_format(enum AVPixelFormat fmt) {
         case AV_PIX_FMT_BGR565BE: return SDL_PIXELFORMAT_BGR565;
         case AV_PIX_FMT_BGR555BE: return SDL_PIXELFORMAT_BGR555;
         case AV_PIX_FMT_RGB444BE: return SDL_PIXELFORMAT_RGB444;
+#if SDL_VERSION_ATLEAST(2, 0, 12)
         case AV_PIX_FMT_BGR444BE: return SDL_PIXELFORMAT_BGR444;
+#endif
         case AV_PIX_FMT_PAL8: return SDL_PIXELFORMAT_INDEX8;
         default: return SDL_PIXELFORMAT_UNKNOWN;
     }

app/src/main.c

@@ -47,6 +47,9 @@ main(int argc, char *argv[]) {
     setbuf(stderr, NULL);
 #endif
 
+    printf("scrcpy " SCRCPY_VERSION
+           " <https://github.com/Genymobile/scrcpy>\n");
+
     struct scrcpy_cli_args args = {
         .opts = scrcpy_options_default,
         .help = false,
@@ -73,8 +76,6 @@ main(int argc, char *argv[]) {
         return 0;
     }
 
-    LOGI("scrcpy " SCRCPY_VERSION " <https://github.com/Genymobile/scrcpy>");
-
 #ifdef SCRCPY_LAVF_REQUIRES_REGISTER_ALL
     av_register_all();
 #endif

app/src/recorder.c

@@ -6,7 +6,7 @@
 #include <libavutil/time.h>
 
 #include "util/log.h"
-#include "util/str_util.h"
+#include "util/str.h"
 
 /** Downcast packet_sink to recorder */
 #define DOWNCAST(SINK) container_of(SINK, struct recorder, packet_sink)
@@ -26,7 +26,7 @@ find_muxer(const char *name) {
         oformat = av_oformat_next(oformat);
 #endif
         // until null or containing the requested name
-    } while (oformat && !strlist_contains(oformat->name, ',', name));
+    } while (oformat && !sc_str_list_contains(oformat->name, ',', name));
     return oformat;
 }
 

app/src/scrcpy.c

@@ -34,7 +34,7 @@
 #endif
 
 struct scrcpy {
-    struct server server;
+    struct sc_server server;
     struct screen screen;
     struct stream stream;
     struct decoder decoder;
@@ -217,6 +217,29 @@ event_loop(struct scrcpy *s, const struct scrcpy_options *options) {
     return false;
 }
 
+static bool
+await_for_server(void) {
+    SDL_Event event;
+    while (SDL_WaitEvent(&event)) {
+        switch (event.type) {
+            case SDL_QUIT:
+                LOGD("User requested to quit");
+                return false;
+            case EVENT_SERVER_CONNECTION_FAILED:
+                LOGE("Server connection failed");
+                return false;
+            case EVENT_SERVER_CONNECTED:
+                LOGD("Server connected");
+                return true;
+            default:
+                break;
+        }
+    }
+
+    LOGE("SDL_WaitEvent() error: %s", SDL_GetError());
+    return false;
+}
+
 static SDL_LogPriority
 sdl_priority_from_av_level(int level) {
     switch (level) {
@@ -262,6 +285,32 @@ stream_on_eos(struct stream *stream, void *userdata) {
     PUSH_EVENT(EVENT_STREAM_STOPPED);
 }
 
+static void
+sc_server_on_connection_failed(struct sc_server *server, void *userdata) {
+    (void) server;
+    (void) userdata;
+
+    PUSH_EVENT(EVENT_SERVER_CONNECTION_FAILED);
+}
+
+static void
+sc_server_on_connected(struct sc_server *server, void *userdata) {
+    (void) server;
+    (void) userdata;
+
+    PUSH_EVENT(EVENT_SERVER_CONNECTED);
+}
+
+static void
+sc_server_on_disconnected(struct sc_server *server, void *userdata) {
+    (void) server;
+    (void) userdata;
+
+    LOGD("Server disconnected");
+    // Do nothing, the disconnection will be handled by the "stream stopped"
+    // event
+}
+
 bool
 scrcpy(struct scrcpy_options *options) {
     static struct scrcpy scrcpy;
@@ -275,10 +324,6 @@ scrcpy(struct scrcpy_options *options) {
 
     atexit(SDL_Quit);
 
-    if (!server_init(&s->server)) {
-        return false;
-    }
-
     bool ret = false;
 
     bool server_started = false;
@@ -295,7 +340,7 @@ scrcpy(struct scrcpy_options *options) {
     bool controller_started = false;
     bool screen_initialized = false;
 
-    struct server_params params = {
+    struct sc_server_params params = {
         .serial = options->serial,
         .log_level = options->log_level,
         .crop = options->crop,
@@ -313,7 +358,17 @@ scrcpy(struct scrcpy_options *options) {
         .force_adb_forward = options->force_adb_forward,
         .power_off_on_close = options->power_off_on_close,
     };
-    if (!server_start(&s->server, &params)) {
+
+    static const struct sc_server_callbacks cbs = {
+        .on_connection_failed = sc_server_on_connection_failed,
+        .on_connected = sc_server_on_connected,
+        .on_disconnected = sc_server_on_disconnected,
+    };
+    if (!sc_server_init(&s->server, &params, &cbs, NULL)) {
+        return false;
+    }
+
+    if (!sc_server_start(&s->server)) {
         goto end;
     }
 
@@ -331,14 +386,19 @@ scrcpy(struct scrcpy_options *options) {
 
     sdl_configure(options->display, options->disable_screensaver);
 
-    struct server_info info;
-
-    if (!server_connect_to(&s->server, &info)) {
+    // Await for server without blocking Ctrl+C handling
+    if (!await_for_server()) {
         goto end;
     }
 
+    // It is necessarily initialized here, since the device is connected
+    struct sc_server_info *info = &s->server.info;
+
+    const char *serial = s->server.params.serial;
+    assert(serial);
+
     if (options->display && options->control) {
-        if (!file_handler_init(&s->file_handler, s->server.serial,
+        if (!file_handler_init(&s->file_handler, serial,
                                options->push_target)) {
             goto end;
         }
@@ -360,7 +420,7 @@ scrcpy(struct scrcpy_options *options) {
         if (!recorder_init(&s->recorder,
                            options->record_filename,
                            options->record_format,
-                           info.frame_size)) {
+                           info->frame_size)) {
             goto end;
         }
         rec = &s->recorder;
@@ -406,11 +466,11 @@ scrcpy(struct scrcpy_options *options) {
 
     if (options->display) {
         const char *window_title =
-            options->window_title ? options->window_title : info.device_name;
+            options->window_title ? options->window_title : info->device_name;
 
         struct screen_params screen_params = {
             .window_title = window_title,
-            .frame_size = info.frame_size,
+            .frame_size = info->frame_size,
             .always_on_top = options->always_on_top,
             .window_x = options->window_x,
             .window_y = options->window_y,
@@ -434,7 +494,7 @@ scrcpy(struct scrcpy_options *options) {
 #ifdef HAVE_V4L2
     if (options->v4l2_device) {
         if (!sc_v4l2_sink_init(&s->v4l2_sink, options->v4l2_device,
-                               info.frame_size, options->v4l2_buffer)) {
+                               info->frame_size, options->v4l2_buffer)) {
             goto end;
         }
 
@@ -459,21 +519,7 @@ scrcpy(struct scrcpy_options *options) {
 #ifdef HAVE_AOA_HID
             bool aoa_hid_ok = false;
 
-            char *serialno = NULL;
-
-            const char *serial = options->serial;
-            if (!serial) {
-                serialno = adb_get_serialno();
-                if (!serialno) {
-                    LOGE("Could not get device serial");
-                    goto aoa_hid_end;
-                }
-                serial = serialno;
-                LOGI("Device serial: %s", serial);
-            }
-
             bool ok = sc_aoa_init(&s->aoa, serial);
-            free(serialno);
             if (!ok) {
                 goto aoa_hid_end;
             }
@@ -551,7 +597,7 @@ end:
 
     if (server_started) {
         // shutdown the sockets and kill the server
-        server_stop(&s->server);
+        sc_server_stop(&s->server);
     }
 
     // now that the sockets are shutdown, the stream and controller are
@@ -596,7 +642,7 @@ end:
         file_handler_destroy(&s->file_handler);
     }
 
-    server_destroy(&s->server);
+    sc_server_destroy(&s->server);
 
     return ret;
 }

app/src/screen.c

@@ -224,6 +224,45 @@ create_texture(struct screen *screen) {
     return texture;
 }
 
+// render the texture to the renderer
+//
+// Set the update_content_rect flag if the window or content size may have
+// changed, so that the content rectangle is recomputed
+static void
+screen_render(struct screen *screen, bool update_content_rect) {
+    if (update_content_rect) {
+        screen_update_content_rect(screen);
+    }
+
+    SDL_RenderClear(screen->renderer);
+    if (screen->rotation == 0) {
+        SDL_RenderCopy(screen->renderer, screen->texture, NULL, &screen->rect);
+    } else {
+        // rotation in RenderCopyEx() is clockwise, while screen->rotation is
+        // counterclockwise (to be consistent with --lock-video-orientation)
+        int cw_rotation = (4 - screen->rotation) % 4;
+        double angle = 90 * cw_rotation;
+
+        SDL_Rect *dstrect = NULL;
+        SDL_Rect rect;
+        if (screen->rotation & 1) {
+            rect.x = screen->rect.x + (screen->rect.w - screen->rect.h) / 2;
+            rect.y = screen->rect.y + (screen->rect.h - screen->rect.w) / 2;
+            rect.w = screen->rect.h;
+            rect.h = screen->rect.w;
+            dstrect = ▭
+        } else {
+            assert(screen->rotation == 2);
+            dstrect = &screen->rect;
+        }
+
+        SDL_RenderCopyEx(screen->renderer, screen->texture, NULL, dstrect,
+                         angle, NULL, 0);
+    }
+    SDL_RenderPresent(screen->renderer);
+}
+
+
 #if defined(__APPLE__) || defined(__WINDOWS__)
 # define CONTINUOUS_RESIZING_WORKAROUND
 #endif
@@ -642,40 +681,6 @@ screen_update_frame(struct screen *screen) {
     return true;
 }
 
-void
-screen_render(struct screen *screen, bool update_content_rect) {
-    if (update_content_rect) {
-        screen_update_content_rect(screen);
-    }
-
-    SDL_RenderClear(screen->renderer);
-    if (screen->rotation == 0) {
-        SDL_RenderCopy(screen->renderer, screen->texture, NULL, &screen->rect);
-    } else {
-        // rotation in RenderCopyEx() is clockwise, while screen->rotation is
-        // counterclockwise (to be consistent with --lock-video-orientation)
-        int cw_rotation = (4 - screen->rotation) % 4;
-        double angle = 90 * cw_rotation;
-
-        SDL_Rect *dstrect = NULL;
-        SDL_Rect rect;
-        if (screen->rotation & 1) {
-            rect.x = screen->rect.x + (screen->rect.w - screen->rect.h) / 2;
-            rect.y = screen->rect.y + (screen->rect.h - screen->rect.w) / 2;
-            rect.w = screen->rect.h;
-            rect.h = screen->rect.w;
-            dstrect = ▭
-        } else {
-            assert(screen->rotation == 2);
-            dstrect = &screen->rect;
-        }
-
-        SDL_RenderCopyEx(screen->renderer, screen->texture, NULL, dstrect,
-                         angle, NULL, 0);
-    }
-    SDL_RenderPresent(screen->renderer);
-}
-
 void
 screen_switch_fullscreen(struct screen *screen) {
     uint32_t new_mode = screen->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP;

app/src/screen.h

@@ -93,13 +93,6 @@ screen_destroy(struct screen *screen);
 void
 screen_hide_window(struct screen *screen);
 
-// render the texture to the renderer
-//
-// Set the update_content_rect flag if the window or content size may have
-// changed, so that the content rectangle is recomputed
-void
-screen_render(struct screen *screen, bool update_content_rect);
-
 // switch the fullscreen mode
 void
 screen_switch_fullscreen(struct screen *screen);

app/src/server.c

@@ -8,15 +8,16 @@
 #include <SDL2/SDL_platform.h>
 
 #include "adb.h"
+#include "util/file.h"
 #include "util/log.h"
-#include "util/net.h"
-#include "util/str_util.h"
+#include "util/net_intr.h"
+#include "util/process_intr.h"
+#include "util/str.h"
 
-#define SOCKET_NAME "scrcpy"
-#define SERVER_FILENAME "scrcpy-server"
+#define SC_SERVER_FILENAME "scrcpy-server"
 
-#define DEFAULT_SERVER_PATH PREFIX "/share/scrcpy/" SERVER_FILENAME
-#define DEVICE_SERVER_PATH "/data/local/tmp/scrcpy-server.jar"
+#define SC_SERVER_PATH_DEFAULT PREFIX "/share/scrcpy/" SC_SERVER_FILENAME
+#define SC_DEVICE_SERVER_PATH "/data/local/tmp/scrcpy-server.jar"
 
 static char *
 get_server_path(void) {
@@ -28,7 +29,7 @@ get_server_path(void) {
     if (server_path_env) {
         // if the envvar is set, use it
 #ifdef __WINDOWS__
-        char *server_path = utf8_from_wide_char(server_path_env);
+        char *server_path = sc_str_from_wchars(server_path_env);
 #else
         char *server_path = strdup(server_path_env);
 #endif
@@ -41,18 +42,18 @@ get_server_path(void) {
     }
 
 #ifndef PORTABLE
-    LOGD("Using server: " DEFAULT_SERVER_PATH);
-    char *server_path = strdup(DEFAULT_SERVER_PATH);
+    LOGD("Using server: " SC_SERVER_PATH_DEFAULT);
+    char *server_path = strdup(SC_SERVER_PATH_DEFAULT);
     if (!server_path) {
         LOGE("Could not allocate memory");
         return NULL;
     }
 #else
-    char *server_path = get_local_file_path(SERVER_FILENAME);
+    char *server_path = sc_file_get_local_path(SC_SERVER_FILENAME);
     if (!server_path) {
         LOGE("Could not get local file path, "
-             "using " SERVER_FILENAME " from current directory");
-        return strdup(SERVER_FILENAME);
+             "using " SC_SERVER_FILENAME " from current directory");
+        return strdup(SC_SERVER_FILENAME);
     }
 
     LOGD("Using server (portable): %s", server_path);
@@ -61,151 +62,60 @@ get_server_path(void) {
     return server_path;
 }
 
+static void
+sc_server_params_destroy(struct sc_server_params *params) {
+    // The server stores a copy of the params provided by the user
+    free((char *) params->serial);
+    free((char *) params->crop);
+    free((char *) params->codec_options);
+    free((char *) params->encoder_name);
+}
+
 static bool
-push_server(const char *serial) {
+sc_server_params_copy(struct sc_server_params *dst,
+                      const struct sc_server_params *src) {
+    *dst = *src;
+
+    // The params reference user-allocated memory, so we must copy them to
+    // handle them from another thread
+
+#define COPY(FIELD) \
+    dst->FIELD = NULL; \
+    if (src->FIELD) { \
+        dst->FIELD = strdup(src->FIELD); \
+        if (!dst->FIELD) { \
+            goto error; \
+        } \
+    }
+
+    COPY(serial);
+    COPY(crop);
+    COPY(codec_options);
+    COPY(encoder_name);
+#undef COPY
+
+    return true;
+
+error:
+    sc_server_params_destroy(dst);
+    return false;
+}
+
+static bool
+push_server(struct sc_intr *intr, const char *serial) {
     char *server_path = get_server_path();
     if (!server_path) {
         return false;
     }
-    if (!is_regular_file(server_path)) {
+    if (!sc_file_is_regular(server_path)) {
         LOGE("'%s' does not exist or is not a regular file\n", server_path);
         free(server_path);
         return false;
     }
-    process_t process = adb_push(serial, server_path, DEVICE_SERVER_PATH);
+    bool ok = adb_push(intr, serial, server_path, SC_DEVICE_SERVER_PATH,
+                       SC_STDERR);
     free(server_path);
-    return process_check_success(process, "adb push", true);
-}
-
-static bool
-enable_tunnel_reverse(const char *serial, uint16_t local_port) {
-    process_t process = adb_reverse(serial, SOCKET_NAME, local_port);
-    return process_check_success(process, "adb reverse", true);
-}
-
-static bool
-disable_tunnel_reverse(const char *serial) {
-    process_t process = adb_reverse_remove(serial, SOCKET_NAME);
-    return process_check_success(process, "adb reverse --remove", true);
-}
-
-static bool
-enable_tunnel_forward(const char *serial, uint16_t local_port) {
-    process_t process = adb_forward(serial, local_port, SOCKET_NAME);
-    return process_check_success(process, "adb forward", true);
-}
-
-static bool
-disable_tunnel_forward(const char *serial, uint16_t local_port) {
-    process_t process = adb_forward_remove(serial, local_port);
-    return process_check_success(process, "adb forward --remove", true);
-}
-
-static bool
-disable_tunnel(struct server *server) {
-    if (server->tunnel_forward) {
-        return disable_tunnel_forward(server->serial, server->local_port);
-    }
-    return disable_tunnel_reverse(server->serial);
-}
-
-static sc_socket
-listen_on_port(uint16_t port) {
-#define IPV4_LOCALHOST 0x7F000001
-    return net_listen(IPV4_LOCALHOST, port, 1);
-}
-
-static bool
-enable_tunnel_reverse_any_port(struct server *server,
-                               struct sc_port_range port_range) {
-    uint16_t port = port_range.first;
-    for (;;) {
-        if (!enable_tunnel_reverse(server->serial, port)) {
-            // the command itself failed, it will fail on any port
-            return false;
-        }
-
-        // At the application level, the device part is "the server" because it
-        // serves video stream and control. However, at the network level, the
-        // client listens and the server connects to the client. That way, the
-        // client can listen before starting the server app, so there is no
-        // need to try to connect until the server socket is listening on the
-        // device.
-        server->server_socket = listen_on_port(port);
-        if (server->server_socket != SC_INVALID_SOCKET) {
-            // success
-            server->local_port = port;
-            return true;
-        }
-
-        // failure, disable tunnel and try another port
-        if (!disable_tunnel_reverse(server->serial)) {
-            LOGW("Could not remove reverse tunnel on port %" PRIu16, port);
-        }
-
-        // check before incrementing to avoid overflow on port 65535
-        if (port < port_range.last) {
-            LOGW("Could not listen on port %" PRIu16", retrying on %" PRIu16,
-                 port, (uint16_t) (port + 1));
-            port++;
-            continue;
-        }
-
-        if (port_range.first == port_range.last) {
-            LOGE("Could not listen on port %" PRIu16, port_range.first);
-        } else {
-            LOGE("Could not listen on any port in range %" PRIu16 ":%" PRIu16,
-                 port_range.first, port_range.last);
-        }
-        return false;
-    }
-}
-
-static bool
-enable_tunnel_forward_any_port(struct server *server,
-                               struct sc_port_range port_range) {
-    server->tunnel_forward = true;
-    uint16_t port = port_range.first;
-    for (;;) {
-        if (enable_tunnel_forward(server->serial, port)) {
-            // success
-            server->local_port = port;
-            return true;
-        }
-
-        if (port < port_range.last) {
-            LOGW("Could not forward port %" PRIu16", retrying on %" PRIu16,
-                 port, (uint16_t) (port + 1));
-            port++;
-            continue;
-        }
-
-        if (port_range.first == port_range.last) {
-            LOGE("Could not forward port %" PRIu16, port_range.first);
-        } else {
-            LOGE("Could not forward any port in range %" PRIu16 ":%" PRIu16,
-                 port_range.first, port_range.last);
-        }
-        return false;
-    }
-}
-
-static bool
-enable_tunnel_any_port(struct server *server, struct sc_port_range port_range,
-                       bool force_adb_forward) {
-    if (!force_adb_forward) {
-        // Attempt to use "adb reverse"
-        if (enable_tunnel_reverse_any_port(server, port_range)) {
-            return true;
-        }
-
-        // if "adb reverse" does not work (e.g. over "adb connect"), it
-        // fallbacks to "adb forward", so the app socket is the client
-
-        LOGW("'adb reverse' failed, fallback to 'adb forward'");
-    }
-
-    return enable_tunnel_forward_any_port(server, port_range);
+    return ok;
 }
 
 static const char *
@@ -227,8 +137,11 @@ log_level_to_server_string(enum sc_log_level level) {
     }
 }
 
-static process_t
-execute_server(struct server *server, const struct server_params *params) {
+static sc_pid
+execute_server(struct sc_server *server,
+               const struct sc_server_params *params) {
+    const char *serial = server->params.serial;
+
     char max_size_string[6];
     char bit_rate_string[11];
     char max_fps_string[6];
@@ -242,7 +155,7 @@ execute_server(struct server *server, const struct server_params *params) {
     sprintf(display_id_string, "%"PRIu32, params->display_id);
     const char *const cmd[] = {
         "shell",
-        "CLASSPATH=" DEVICE_SERVER_PATH,
+        "CLASSPATH=" SC_DEVICE_SERVER_PATH,
         "app_process",
 #ifdef SERVER_DEBUGGER
 # define SERVER_DEBUGGER_PORT "5005"
@@ -264,7 +177,7 @@ execute_server(struct server *server, const struct server_params *params) {
         bit_rate_string,
         max_fps_string,
         lock_video_orientation_string,
-        server->tunnel_forward ? "true" : "false",
+        server->tunnel.forward ? "true" : "false",
         params->crop ? params->crop : "-",
         "true", // always send frame meta (packet boundaries + timestamp)
         params->control ? "true" : "false",
@@ -286,277 +199,367 @@ 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));
+    // Inherit both stdout and stderr (all server logs are printed to stdout)
+    return adb_execute(serial, cmd, ARRAY_LEN(cmd), SC_STDOUT | SC_STDERR);
 }
 
-static sc_socket
-connect_and_read_byte(uint16_t port) {
-    sc_socket socket = net_connect(IPV4_LOCALHOST, port);
-    if (socket == SC_INVALID_SOCKET) {
-        return SC_INVALID_SOCKET;
+static bool
+connect_and_read_byte(struct sc_intr *intr, sc_socket socket, uint16_t port) {
+    bool ok = net_connect_intr(intr, socket, IPV4_LOCALHOST, port);
+    if (!ok) {
+        return false;
     }
 
     char byte;
     // the connection may succeed even if the server behind the "adb tunnel"
     // is not listening, so read one byte to detect a working connection
-    if (net_recv(socket, &byte, 1) != 1) {
+    if (net_recv_intr(intr, socket, &byte, 1) != 1) {
         // the server is not listening yet behind the adb tunnel
-        net_close(socket);
-        return SC_INVALID_SOCKET;
+        return false;
     }
-    return socket;
+
+    return true;
 }
 
 static sc_socket
-connect_to_server(uint16_t port, uint32_t attempts, uint32_t delay) {
+connect_to_server(struct sc_server *server, uint32_t attempts, sc_tick delay) {
+    uint16_t port = server->tunnel.local_port;
     do {
         LOGD("Remaining connection attempts: %d", (int) attempts);
-        sc_socket socket = connect_and_read_byte(port);
-        if (socket != SC_INVALID_SOCKET) {
+        sc_socket socket = net_socket();
+        if (socket != SC_SOCKET_NONE) {
+            bool ok = connect_and_read_byte(&server->intr, socket, port);
+            if (ok) {
                 // it worked!
                 return socket;
             }
+
+            net_close(socket);
+        }
+
+        if (sc_intr_is_interrupted(&server->intr)) {
+            // Stop immediately
+            break;
+        }
+
         if (attempts) {
-            SDL_Delay(delay);
+            sc_mutex_lock(&server->mutex);
+            sc_tick deadline = sc_tick_now() + delay;
+            bool timed_out = false;
+            while (!server->stopped && !timed_out) {
+                timed_out = !sc_cond_timedwait(&server->cond_stopped,
+                                               &server->mutex, deadline);
+            }
+            bool stopped = server->stopped;
+            sc_mutex_unlock(&server->mutex);
+
+            if (stopped) {
+                LOGI("Connection attempt stopped");
+                break;
+            }
         }
     } while (--attempts > 0);
-    return SC_INVALID_SOCKET;
+    return SC_SOCKET_NONE;
 }
 
 bool
-server_init(struct server *server) {
-    server->serial = NULL;
-    server->process = PROCESS_NONE;
-
-    bool ok = sc_mutex_init(&server->mutex);
+sc_server_init(struct sc_server *server, const struct sc_server_params *params,
+              const struct sc_server_callbacks *cbs, void *cbs_userdata) {
+    bool ok = sc_server_params_copy(&server->params, params);
     if (!ok) {
+        LOGE("Could not copy server params");
         return false;
     }
 
-    ok = sc_cond_init(&server->process_terminated_cond);
+    ok = sc_mutex_init(&server->mutex);
     if (!ok) {
+        LOGE("Could not create server mutex");
+        sc_server_params_destroy(&server->params);
+        return false;
+    }
+
+    ok = sc_cond_init(&server->cond_stopped);
+    if (!ok) {
+        LOGE("Could not create server cond_stopped");
         sc_mutex_destroy(&server->mutex);
+        sc_server_params_destroy(&server->params);
         return false;
     }
 
-    server->process_terminated = false;
+    ok = sc_intr_init(&server->intr);
+    if (!ok) {
+        LOGE("Could not create intr");
+        sc_cond_destroy(&server->cond_stopped);
+        sc_mutex_destroy(&server->mutex);
+        sc_server_params_destroy(&server->params);
+        return false;
+    }
 
-    server->server_socket = SC_INVALID_SOCKET;
-    server->video_socket = SC_INVALID_SOCKET;
-    server->control_socket = SC_INVALID_SOCKET;
+    server->stopped = false;
 
-    server->local_port = 0;
+    server->video_socket = SC_SOCKET_NONE;
+    server->control_socket = SC_SOCKET_NONE;
 
-    server->tunnel_enabled = false;
-    server->tunnel_forward = false;
+    sc_adb_tunnel_init(&server->tunnel);
+
+    assert(cbs);
+    assert(cbs->on_connection_failed);
+    assert(cbs->on_connected);
+    assert(cbs->on_disconnected);
+
+    server->cbs = cbs;
+    server->cbs_userdata = cbs_userdata;
+
+    return true;
+}
+
+static bool
+device_read_info(struct sc_intr *intr, sc_socket device_socket,
+                 struct sc_server_info *info) {
+    unsigned char buf[SC_DEVICE_NAME_FIELD_LENGTH + 4];
+    ssize_t r = net_recv_all_intr(intr, device_socket, buf, sizeof(buf));
+    if (r < SC_DEVICE_NAME_FIELD_LENGTH + 4) {
+        LOGE("Could not retrieve device information");
+        return false;
+    }
+    // in case the client sends garbage
+    buf[SC_DEVICE_NAME_FIELD_LENGTH - 1] = '\0';
+    memcpy(info->device_name, (char *) buf, sizeof(info->device_name));
+
+    info->frame_size.width = (buf[SC_DEVICE_NAME_FIELD_LENGTH] << 8)
+                           | buf[SC_DEVICE_NAME_FIELD_LENGTH + 1];
+    info->frame_size.height = (buf[SC_DEVICE_NAME_FIELD_LENGTH + 2] << 8)
+                            | buf[SC_DEVICE_NAME_FIELD_LENGTH + 3];
+    return true;
+}
+
+static bool
+sc_server_connect_to(struct sc_server *server, struct sc_server_info *info) {
+    struct sc_adb_tunnel *tunnel = &server->tunnel;
+
+    assert(tunnel->enabled);
+
+    const char *serial = server->params.serial;
+
+    sc_socket video_socket = SC_SOCKET_NONE;
+    sc_socket control_socket = SC_SOCKET_NONE;
+    if (!tunnel->forward) {
+        video_socket = net_accept_intr(&server->intr, tunnel->server_socket);
+        if (video_socket == SC_SOCKET_NONE) {
+            goto fail;
+        }
+
+        control_socket = net_accept_intr(&server->intr, tunnel->server_socket);
+        if (control_socket == SC_SOCKET_NONE) {
+            goto fail;
+        }
+    } else {
+        uint32_t attempts = 100;
+        sc_tick delay = SC_TICK_FROM_MS(100);
+        video_socket = connect_to_server(server, attempts, delay);
+        if (video_socket == SC_SOCKET_NONE) {
+            goto fail;
+        }
+
+        // we know that the device is listening, we don't need several attempts
+        control_socket = net_socket();
+        if (control_socket == SC_SOCKET_NONE) {
+            goto fail;
+        }
+        bool ok = net_connect_intr(&server->intr, control_socket,
+                                   IPV4_LOCALHOST, tunnel->local_port);
+        if (!ok) {
+            goto fail;
+        }
+    }
+
+    // we don't need the adb tunnel anymore
+    sc_adb_tunnel_close(tunnel, &server->intr, serial);
+
+    // The sockets will be closed on stop if device_read_info() fails
+    bool ok = device_read_info(&server->intr, video_socket, info);
+    if (!ok) {
+        goto fail;
+    }
+
+    assert(video_socket != SC_SOCKET_NONE);
+    assert(control_socket != SC_SOCKET_NONE);
+
+    server->video_socket = video_socket;
+    server->control_socket = control_socket;
+
+    return true;
+
+fail:
+    if (video_socket != SC_SOCKET_NONE) {
+        if (!net_close(video_socket)) {
+            LOGW("Could not close video socket");
+        }
+    }
+
+    if (control_socket != SC_SOCKET_NONE) {
+        if (!net_close(control_socket)) {
+            LOGW("Could not close control socket");
+        }
+    }
+
+    // Always leave this function with tunnel disabled
+    sc_adb_tunnel_close(tunnel, &server->intr, serial);
+
+    return false;
+}
+
+static void
+sc_server_on_terminated(void *userdata) {
+    struct sc_server *server = userdata;
+
+    // If the server process dies before connecting to the server socket,
+    // then the client will be stuck forever on accept(). To avoid the problem,
+    // wake up the accept() call (or any other) when the server dies, like on
+    // stop() (it is safe to call interrupt() twice).
+    sc_intr_interrupt(&server->intr);
+
+    server->cbs->on_disconnected(server, server->cbs_userdata);
+
+    LOGD("Server terminated");
+}
+
+static bool
+sc_server_fill_serial(struct sc_server *server) {
+    // Retrieve the actual device immediately if not provided, so that all
+    // future adb commands are executed for this specific device, even if other
+    // devices are connected afterwards (without "more than one
+    // device/emulator" error)
+    if (!server->params.serial) {
+        // The serial is owned by sc_server_params, and will be freed on destroy
+        server->params.serial = adb_get_serialno(&server->intr, SC_STDERR);
+        if (!server->params.serial) {
+            LOGE("Could not get device serial");
+            return false;
+        }
+    }
 
     return true;
 }
 
 static int
-run_wait_server(void *data) {
-    struct server *server = data;
-    process_wait(server->process, false); // ignore exit code
+run_server(void *data) {
+    struct sc_server *server = data;
 
-    sc_mutex_lock(&server->mutex);
-    server->process_terminated = true;
-    sc_cond_signal(&server->process_terminated_cond);
-    sc_mutex_unlock(&server->mutex);
-
-    // no need for synchronization, server_socket is initialized before this
-    // thread was created
-    if (server->server_socket != SC_INVALID_SOCKET) {
-        // Unblock any accept()
-        net_interrupt(server->server_socket);
+    if (!sc_server_fill_serial(server)) {
+        goto error_connection_failed;
     }
 
-    LOGD("Server terminated");
-    return 0;
+    const struct sc_server_params *params = &server->params;
+
+    LOGD("Device serial: %s", params->serial);
+
+    bool ok = push_server(&server->intr, params->serial);
+    if (!ok) {
+        goto error_connection_failed;
     }
 
-bool
-server_start(struct server *server, const struct server_params *params) {
-    if (params->serial) {
-        server->serial = strdup(params->serial);
-        if (!server->serial) {
-            return false;
-        }
-    }
+    LOGI("Server pushed");
 
-    if (!push_server(params->serial)) {
-        /* server->serial will be freed on server_destroy() */
-        return false;
-    }
-
-    if (!enable_tunnel_any_port(server, params->port_range,
-                                params->force_adb_forward)) {
-        return false;
+    ok = sc_adb_tunnel_open(&server->tunnel, &server->intr, params->serial,
+                            params->port_range, params->force_adb_forward);
+    if (!ok) {
+        goto error_connection_failed;
     }
 
     // server will connect to our server socket
-    server->process = execute_server(server, params);
-    if (server->process == PROCESS_NONE) {
-        goto error;
+    sc_pid pid = execute_server(server, params);
+    if (pid == SC_PROCESS_NONE) {
+        sc_adb_tunnel_close(&server->tunnel, &server->intr, params->serial);
+        goto error_connection_failed;
     }
 
-    // If the server process dies before connecting to the server socket, then
-    // the client will be stuck forever on accept(). To avoid the problem, we
-    // must be able to wake up the accept() call when the server dies. To keep
-    // things simple and multiplatform, just spawn a new thread waiting for the
-    // server process and calling shutdown()/close() on the server socket if
-    // necessary to wake up any accept() blocking call.
-    bool ok = sc_thread_create(&server->wait_server_thread, run_wait_server,
-                               "wait-server", server);
+    static const struct sc_process_listener listener = {
+        .on_terminated = sc_server_on_terminated,
+    };
+    struct sc_process_observer observer;
+    ok = sc_process_observer_init(&observer, pid, &listener, server);
     if (!ok) {
-        process_terminate(server->process);
-        process_wait(server->process, true); // ignore exit code
-        goto error;
+        sc_process_terminate(pid);
+        sc_process_wait(pid, true); // ignore exit code
+        sc_adb_tunnel_close(&server->tunnel, &server->intr, params->serial);
+        goto error_connection_failed;
     }
 
-    server->tunnel_enabled = true;
-
-    return true;
-
-error:
-    // The server socket (if any) will be closed on server_destroy()
-
-    disable_tunnel(server);
-
-    return false;
+    ok = sc_server_connect_to(server, &server->info);
+    // The tunnel is always closed by server_connect_to()
+    if (!ok) {
+        sc_process_terminate(pid);
+        sc_process_wait(pid, true); // ignore exit code
+        sc_process_observer_join(&observer);
+        sc_process_observer_destroy(&observer);
+        goto error_connection_failed;
     }
 
-static bool
-device_read_info(sc_socket device_socket, struct server_info *info) {
-    unsigned char buf[DEVICE_NAME_FIELD_LENGTH + 4];
-    ssize_t 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';
-    memcpy(info->device_name, (char *) buf, sizeof(info->device_name));
+    // Now connected
+    server->cbs->on_connected(server, server->cbs_userdata);
 
-    info->frame_size.width = (buf[DEVICE_NAME_FIELD_LENGTH] << 8)
-                           | buf[DEVICE_NAME_FIELD_LENGTH + 1];
-    info->frame_size.height = (buf[DEVICE_NAME_FIELD_LENGTH + 2] << 8)
-                            | buf[DEVICE_NAME_FIELD_LENGTH + 3];
-    return true;
-}
-
-bool
-server_connect_to(struct server *server, struct server_info *info) {
-    if (!server->tunnel_forward) {
-        server->video_socket = net_accept(server->server_socket);
-        if (server->video_socket == SC_INVALID_SOCKET) {
-            return false;
-        }
-
-        server->control_socket = net_accept(server->server_socket);
-        if (server->control_socket == SC_INVALID_SOCKET) {
-            // the video_socket will be cleaned up on destroy
-            return false;
-        }
-
-        // we don't need the server socket anymore
-        if (!net_close(server->server_socket)) {
-            LOGW("Could not close server socket on connect");
-        }
-        // Do not attempt to close it again on server_destroy()
-        server->server_socket = SC_INVALID_SOCKET;
-    } else {
-        uint32_t attempts = 100;
-        uint32_t delay = 100; // ms
-        server->video_socket =
-            connect_to_server(server->local_port, attempts, delay);
-        if (server->video_socket == SC_INVALID_SOCKET) {
-            return false;
-        }
-
-        // we know that the device is listening, we don't need several attempts
-        server->control_socket =
-            net_connect(IPV4_LOCALHOST, server->local_port);
-        if (server->control_socket == SC_INVALID_SOCKET) {
-            return false;
-        }
-    }
-
-    // we don't need the adb tunnel anymore
-    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, info);
-}
-
-void
-server_stop(struct server *server) {
-    if (server->server_socket != SC_INVALID_SOCKET) {
-        if (!net_interrupt(server->server_socket)) {
-            LOGW("Could not interrupt server socket");
-        }
-    }
-    if (server->video_socket != SC_INVALID_SOCKET) {
-        if (!net_interrupt(server->video_socket)) {
-            LOGW("Could not interrupt video socket");
-        }
-    }
-    if (server->control_socket != SC_INVALID_SOCKET) {
-        if (!net_interrupt(server->control_socket)) {
-            LOGW("Could not interrupt control socket");
-        }
-    }
-
-    assert(server->process != PROCESS_NONE);
-
-    if (server->tunnel_enabled) {
-        // ignore failure
-        disable_tunnel(server);
-    }
-
-    // Give some delay for the server to terminate properly
+    // Wait for server_stop()
     sc_mutex_lock(&server->mutex);
-    bool signaled = false;
-    if (!server->process_terminated) {
-#define WATCHDOG_DELAY SC_TICK_FROM_SEC(1)
-        signaled = sc_cond_timedwait(&server->process_terminated_cond,
-                                     &server->mutex,
-                                     sc_tick_now() + WATCHDOG_DELAY);
+    while (!server->stopped) {
+        sc_cond_wait(&server->cond_stopped, &server->mutex);
     }
     sc_mutex_unlock(&server->mutex);
 
+    // Give some delay for the server to terminate properly
+#define WATCHDOG_DELAY SC_TICK_FROM_SEC(1)
+    sc_tick deadline = sc_tick_now() + WATCHDOG_DELAY;
+    bool terminated = sc_process_observer_timedwait(&observer, deadline);
+
     // After this delay, kill the server if it's not dead already.
     // On some devices, closing the sockets is not sufficient to wake up the
     // blocking calls while the device is asleep.
-    if (!signaled) {
-        // The process is terminated, but not reaped (closed) yet, so its PID
-        // is still valid.
+    if (!terminated) {
+        // The process may have terminated since the check, but it is not
+        // reaped (closed) yet, so its PID is still valid, and it is ok to call
+        // sc_process_terminate() even in that case.
         LOGW("Killing the server...");
-        process_terminate(server->process);
+        sc_process_terminate(pid);
     }
 
-    sc_thread_join(&server->wait_server_thread, NULL);
-    process_close(server->process);
+    sc_process_observer_join(&observer);
+    sc_process_observer_destroy(&observer);
+
+    sc_process_close(pid);
+
+    return 0;
+
+error_connection_failed:
+    server->cbs->on_connection_failed(server, server->cbs_userdata);
+    return -1;
+}
+
+bool
+sc_server_start(struct sc_server *server) {
+    bool ok = sc_thread_create(&server->thread, run_server, "server", server);
+    if (!ok) {
+        LOGE("Could not create server thread");
+        return false;
+    }
+
+    return true;
 }
 
 void
-server_destroy(struct server *server) {
-    if (server->server_socket != SC_INVALID_SOCKET) {
-        if (!net_close(server->server_socket)) {
-            LOGW("Could not close server socket");
+sc_server_stop(struct sc_server *server) {
+    sc_mutex_lock(&server->mutex);
+    server->stopped = true;
+    sc_cond_signal(&server->cond_stopped);
+    sc_intr_interrupt(&server->intr);
+    sc_mutex_unlock(&server->mutex);
+
+    sc_thread_join(&server->thread, NULL);
 }
-    }
-    if (server->video_socket != SC_INVALID_SOCKET) {
-        if (!net_close(server->video_socket)) {
-            LOGW("Could not close video socket");
-        }
-    }
-    if (server->control_socket != SC_INVALID_SOCKET) {
-        if (!net_close(server->control_socket)) {
-            LOGW("Could not close control socket");
-        }
-    }
-    free(server->serial);
-    sc_cond_destroy(&server->process_terminated_cond);
+
+void
+sc_server_destroy(struct sc_server *server) {
+    sc_server_params_destroy(&server->params);
+    sc_intr_destroy(&server->intr);
+    sc_cond_destroy(&server->cond_stopped);
     sc_mutex_destroy(&server->mutex);
 }

app/src/server.h

@@ -8,36 +8,21 @@
 #include <stdint.h>
 
 #include "adb.h"
+#include "adb_tunnel.h"
 #include "coords.h"
 #include "options.h"
+#include "util/intr.h"
 #include "util/log.h"
 #include "util/net.h"
 #include "util/thread.h"
 
-#define DEVICE_NAME_FIELD_LENGTH 64
-struct server_info {
-    char device_name[DEVICE_NAME_FIELD_LENGTH];
+#define SC_DEVICE_NAME_FIELD_LENGTH 64
+struct sc_server_info {
+    char device_name[SC_DEVICE_NAME_FIELD_LENGTH];
     struct sc_size frame_size;
 };
 
-struct server {
-    char *serial;
-    process_t process;
-    sc_thread wait_server_thread;
-
-    sc_mutex mutex;
-    sc_cond process_terminated_cond;
-    bool process_terminated;
-
-    sc_socket server_socket; // only used if !tunnel_forward
-    sc_socket video_socket;
-    sc_socket control_socket;
-    uint16_t local_port; // selected from port_range
-    bool tunnel_enabled;
-    bool tunnel_forward; // use "adb forward" instead of "adb reverse"
-};
-
-struct server_params {
+struct sc_server_params {
     const char *serial;
     enum sc_log_level log_level;
     const char *crop;
@@ -56,24 +41,62 @@ struct server_params {
     bool power_off_on_close;
 };
 
-// init default values
-bool
-server_init(struct server *server);
+struct sc_server {
+    // The internal allocated strings are copies owned by the server
+    struct sc_server_params params;
 
-// push, enable tunnel et start the server
-bool
-server_start(struct server *server, const struct server_params *params);
+    sc_thread thread;
+    struct sc_server_info info; // initialized once connected
 
-// block until the communication with the server is established
+    sc_mutex mutex;
+    sc_cond cond_stopped;
+    bool stopped;
+
+    struct sc_intr intr;
+    struct sc_adb_tunnel tunnel;
+
+    sc_socket video_socket;
+    sc_socket control_socket;
+
+    const struct sc_server_callbacks *cbs;
+    void *cbs_userdata;
+};
+
+struct sc_server_callbacks {
+    /**
+     * Called when the server failed to connect
+     *
+     * If it is called, then on_connected() and on_disconnected() will never be
+     * called.
+     */
+    void (*on_connection_failed)(struct sc_server *server, void *userdata);
+
+    /**
+     * Called on server connection
+     */
+    void (*on_connected)(struct sc_server *server, void *userdata);
+
+    /**
+     * Called on server disconnection (after it has been connected)
+     */
+    void (*on_disconnected)(struct sc_server *server, void *userdata);
+};
+
+// init the server with the given params
 bool
-server_connect_to(struct server *server, struct server_info *info);
+sc_server_init(struct sc_server *server, const struct sc_server_params *params,
+               const struct sc_server_callbacks *cbs, void *cbs_userdata);
+
+// start the server asynchronously
+bool
+sc_server_start(struct sc_server *server);
 
 // disconnect and kill the server process
 void
-server_stop(struct server *server);
+sc_server_stop(struct sc_server *server);
 
 // close and release sockets
 void
-server_destroy(struct server *server);
+sc_server_destroy(struct sc_server *server);
 
 #endif

app/src/sys/unix/file.c

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

app/src/sys/unix/process.c

@@ -3,56 +3,24 @@
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <limits.h>
 #include <signal.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
 #include "util/log.h"
 
-bool
-search_executable(const char *file) {
-    char *path = getenv("PATH");
-    if (!path)
-        return false;
-    path = strdup(path);
-    if (!path)
-        return false;
+enum sc_process_result
+sc_process_execute_p(const char *const argv[], sc_pid *pid, unsigned inherit,
+                     int *pin, int *pout, int *perr) {
+    bool inherit_stdout = inherit & SC_STDOUT;
+    bool inherit_stderr = inherit & SC_STDERR;
 
-    bool ret = false;
-    size_t file_len = strlen(file);
-    char *saveptr;
-    for (char *dir = strtok_r(path, ":", &saveptr); dir;
-            dir = strtok_r(NULL, ":", &saveptr)) {
-        size_t dir_len = strlen(dir);
-        char *fullpath = malloc(dir_len + file_len + 2);
-        if (!fullpath)
-            continue;
-        memcpy(fullpath, dir, dir_len);
-        fullpath[dir_len] = '/';
-        memcpy(fullpath + dir_len + 1, file, file_len + 1);
+    // If pout is defined, then inherit MUST NOT contain SC_STDOUT.
+    assert(!pout || !inherit_stdout);
+    // If perr is defined, then inherit MUST NOT contain SC_STDERR.
+    assert(!perr || !inherit_stderr);
 
-        struct stat sb;
-        bool fullpath_executable = stat(fullpath, &sb) == 0 &&
-            sb.st_mode & S_IXUSR;
-        free(fullpath);
-        if (fullpath_executable) {
-            ret = true;
-            break;
-        }
-    }
-
-    free(path);
-    return ret;
-}
-
-enum process_result
-process_execute_redirect(const char *const argv[], pid_t *pid, int *pipe_stdin,
-                     int *pipe_stdout, int *pipe_stderr) {
     int in[2];
     int out[2];
     int err[2];
@@ -60,44 +28,44 @@ process_execute_redirect(const char *const argv[], pid_t *pid, int *pipe_stdin,
 
     if (pipe(internal) == -1) {
         perror("pipe");
-        return PROCESS_ERROR_GENERIC;
+        return SC_PROCESS_ERROR_GENERIC;
     }
-    if (pipe_stdin) {
+    if (pin) {
         if (pipe(in) == -1) {
             perror("pipe");
             close(internal[0]);
             close(internal[1]);
-            return PROCESS_ERROR_GENERIC;
+            return SC_PROCESS_ERROR_GENERIC;
         }
     }
-    if (pipe_stdout) {
+    if (pout) {
         if (pipe(out) == -1) {
             perror("pipe");
             // clean up
-            if (pipe_stdin) {
+            if (pin) {
                 close(in[0]);
                 close(in[1]);
             }
             close(internal[0]);
             close(internal[1]);
-            return PROCESS_ERROR_GENERIC;
+            return SC_PROCESS_ERROR_GENERIC;
         }
     }
-    if (pipe_stderr) {
+    if (perr) {
         if (pipe(err) == -1) {
             perror("pipe");
             // clean up
-            if (pipe_stdout) {
+            if (pout) {
                 close(out[0]);
                 close(out[1]);
             }
-            if (pipe_stdin) {
+            if (pin) {
                 close(in[0]);
                 close(in[1]);
             }
             close(internal[0]);
             close(internal[1]);
-            return PROCESS_ERROR_GENERIC;
+            return SC_PROCESS_ERROR_GENERIC;
         }
     }
 
@@ -105,55 +73,66 @@ process_execute_redirect(const char *const argv[], pid_t *pid, int *pipe_stdin,
     if (*pid == -1) {
         perror("fork");
         // clean up
-        if (pipe_stderr) {
+        if (perr) {
             close(err[0]);
             close(err[1]);
         }
-        if (pipe_stdout) {
+        if (pout) {
             close(out[0]);
             close(out[1]);
         }
-        if (pipe_stdin) {
+        if (pin) {
             close(in[0]);
             close(in[1]);
         }
         close(internal[0]);
         close(internal[1]);
-        return PROCESS_ERROR_GENERIC;
+        return SC_PROCESS_ERROR_GENERIC;
     }
 
     if (*pid == 0) {
-        if (pipe_stdin) {
+        if (pin) {
             if (in[0] != STDIN_FILENO) {
                 dup2(in[0], STDIN_FILENO);
                 close(in[0]);
             }
             close(in[1]);
         }
-        if (pipe_stdout) {
+        // Do not close stdin in the child process, this makes adb fail on
+        // Linux
+
+        if (pout) {
             if (out[1] != STDOUT_FILENO) {
                 dup2(out[1], STDOUT_FILENO);
                 close(out[1]);
             }
             close(out[0]);
+        } else if (!inherit_stdout) {
+            // Close stdout in the child process
+            close(STDOUT_FILENO);
         }
-        if (pipe_stderr) {
+
+        if (perr) {
             if (err[1] != STDERR_FILENO) {
                 dup2(err[1], STDERR_FILENO);
                 close(err[1]);
             }
             close(err[0]);
+        } else if (!inherit_stderr) {
+            // Close stderr in the child process
+            close(STDERR_FILENO);
         }
+
         close(internal[0]);
-        enum process_result err;
+        enum sc_process_result err;
         if (fcntl(internal[1], F_SETFD, FD_CLOEXEC) == 0) {
             execvp(argv[0], (char *const *) argv);
             perror("exec");
-            err = errno == ENOENT ? PROCESS_ERROR_MISSING_BINARY
-                                  : PROCESS_ERROR_GENERIC;
+            err = errno == ENOENT ? SC_PROCESS_ERROR_MISSING_BINARY
+                                  : SC_PROCESS_ERROR_GENERIC;
         } else {
             perror("fcntl");
-            err = PROCESS_ERROR_GENERIC;
+            err = SC_PROCESS_ERROR_GENERIC;
         }
         // send err to the parent
         if (write(internal[1], &err, sizeof(err)) == -1) {
@@ -168,38 +147,33 @@ process_execute_redirect(const char *const argv[], pid_t *pid, int *pipe_stdin,
 
     close(internal[1]);
 
-    enum process_result res = PROCESS_SUCCESS;
+    enum sc_process_result res = SC_PROCESS_SUCCESS;
     // wait for EOF or receive err from child
     if (read(internal[0], &res, sizeof(res)) == -1) {
         perror("read");
-        res = PROCESS_ERROR_GENERIC;
+        res = SC_PROCESS_ERROR_GENERIC;
     }
 
     close(internal[0]);
 
-    if (pipe_stdin) {
+    if (pin) {
         close(in[0]);
-        *pipe_stdin = in[1];
+        *pin = in[1];
     }
-    if (pipe_stdout) {
-        *pipe_stdout = out[0];
+    if (pout) {
+        *pout = out[0];
         close(out[1]);
     }
-    if (pipe_stderr) {
-        *pipe_stderr = err[0];
+    if (perr) {
+        *perr = err[0];
         close(err[1]);
     }
 
     return res;
 }
 
-enum process_result
-process_execute(const char *const argv[], pid_t *pid) {
-    return process_execute_redirect(argv, pid, NULL, NULL, NULL);
-}
-
 bool
-process_terminate(pid_t pid) {
+sc_process_terminate(pid_t pid) {
     if (pid <= 0) {
         LOGC("Requested to kill %d, this is an error. Please report the bug.\n",
              (int) pid);
@@ -208,8 +182,8 @@ process_terminate(pid_t pid) {
     return kill(pid, SIGKILL) != -1;
 }
 
-exit_code_t
-process_wait(pid_t pid, bool close) {
+sc_exit_code
+sc_process_wait(pid_t pid, bool close) {
     int code;
     int options = WEXITED;
     if (!close) {
@@ -220,7 +194,7 @@ process_wait(pid_t pid, bool close) {
     int r = waitid(P_PID, pid, &info, options);
     if (r == -1 || info.si_code != CLD_EXITED) {
         // could not wait, or exited unexpectedly, probably by a signal
-        code = NO_EXIT_CODE;
+        code = SC_EXIT_CODE_NONE;
     } else {
         code = info.si_status;
     }
@@ -228,48 +202,17 @@ process_wait(pid_t pid, bool close) {
 }
 
 void
-process_close(pid_t pid) {
-    process_wait(pid, true); // ignore exit code
-}
-
-char *
-get_executable_path(void) {
-// <https://stackoverflow.com/a/1024937/1987178>
-#ifdef __linux__
-    char buf[PATH_MAX + 1]; // +1 for the null byte
-    ssize_t len = readlink("/proc/self/exe", buf, PATH_MAX);
-    if (len == -1) {
-        perror("readlink");
-        return NULL;
-    }
-    buf[len] = '\0';
-    return strdup(buf);
-#else
-    // in practice, we only need this feature for portable builds, only used on
-    // Windows, so we don't care implementing it for every platform
-    // (it's useful to have a working version on Linux for debugging though)
-    return NULL;
-#endif
-}
-
-bool
-is_regular_file(const char *path) {
-    struct stat path_stat;
-
-    if (stat(path, &path_stat)) {
-        perror("stat");
-        return false;
-    }
-    return S_ISREG(path_stat.st_mode);
+sc_process_close(pid_t pid) {
+    sc_process_wait(pid, true); // ignore exit code
 }
 
 ssize_t
-read_pipe(int pipe, char *data, size_t len) {
+sc_pipe_read(int pipe, char *data, size_t len) {
     return read(pipe, data, len);
 }
 
 void
-close_pipe(int pipe) {
+sc_pipe_close(int pipe) {
     if (close(pipe)) {
         perror("close pipe");
     }

app/src/sys/win/file.c

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

app/src/sys/win/process.c

@@ -1,10 +1,14 @@
+// <https://devblogs.microsoft.com/oldnewthing/20111216-00/?p=8873>
+#define _WIN32_WINNT 0x0600 // For extended process API
+
 #include "util/process.h"
 
+#include <processthreadsapi.h>
+
 #include <assert.h>
-#include <sys/stat.h>
 
 #include "util/log.h"
-#include "util/str_util.h"
+#include "util/str.h"
 
 #define CMD_MAX_LEN 8192
 
@@ -14,19 +18,31 @@ build_cmd(char *cmd, size_t len, const char *const argv[]) {
     // <http://daviddeley.com/autohotkey/parameters/parameters.htm#WINPASS>
     // only make it work for this very specific program
     // (don't handle escaping nor quotes)
-    size_t ret = xstrjoin(cmd, argv, ' ', len);
+    size_t ret = sc_str_join(cmd, argv, ' ', len);
     if (ret >= len) {
-        LOGE("Command too long (%" PRIsizet " chars)", len - 1);
+        LOGE("Command too long (%" SC_PRIsizet " chars)", len - 1);
         return false;
     }
     return true;
 }
 
-enum process_result
-process_execute_redirect(const char *const argv[], HANDLE *handle,
-                         HANDLE *pipe_stdin, HANDLE *pipe_stdout,
-                         HANDLE *pipe_stderr) {
-    enum process_result ret = PROCESS_ERROR_GENERIC;
+enum sc_process_result
+sc_process_execute_p(const char *const argv[], HANDLE *handle, unsigned inherit,
+                     HANDLE *pin, HANDLE *pout, HANDLE *perr) {
+    bool inherit_stdout = inherit & SC_STDOUT;
+    bool inherit_stderr = inherit & SC_STDERR;
+
+    // If pout is defined, then inherit MUST NOT contain SC_STDOUT.
+    assert(!pout || !inherit_stdout);
+    // If perr is defined, then inherit MUST NOT contain SC_STDERR.
+    assert(!perr || !inherit_stderr);
+
+    // Add 1 per non-NULL pointer
+    unsigned handle_count = !!pin
+                          + (pout || inherit_stdout)
+                          + (perr || inherit_stderr);
+
+    enum sc_process_result ret = SC_PROCESS_ERROR_GENERIC;
 
     SECURITY_ATTRIBUTES sa;
     sa.nLength = sizeof(SECURITY_ATTRIBUTES);
@@ -36,130 +52,175 @@ process_execute_redirect(const char *const argv[], HANDLE *handle,
     HANDLE stdin_read_handle;
     HANDLE stdout_write_handle;
     HANDLE stderr_write_handle;
-    if (pipe_stdin) {
-        if (!CreatePipe(&stdin_read_handle, pipe_stdin, &sa, 0)) {
+    if (pin) {
+        if (!CreatePipe(&stdin_read_handle, pin, &sa, 0)) {
             perror("pipe");
-            return PROCESS_ERROR_GENERIC;
+            return SC_PROCESS_ERROR_GENERIC;
         }
-        if (!SetHandleInformation(*pipe_stdin, HANDLE_FLAG_INHERIT, 0)) {
+        if (!SetHandleInformation(*pin, HANDLE_FLAG_INHERIT, 0)) {
             LOGE("SetHandleInformation stdin failed");
             goto error_close_stdin;
         }
     }
-    if (pipe_stdout) {
-        if (!CreatePipe(pipe_stdout, &stdout_write_handle, &sa, 0)) {
+    if (pout) {
+        if (!CreatePipe(pout, &stdout_write_handle, &sa, 0)) {
             perror("pipe");
             goto error_close_stdin;
         }
-        if (!SetHandleInformation(*pipe_stdout, HANDLE_FLAG_INHERIT, 0)) {
+        if (!SetHandleInformation(*pout, HANDLE_FLAG_INHERIT, 0)) {
             LOGE("SetHandleInformation stdout failed");
             goto error_close_stdout;
         }
     }
-    if (pipe_stderr) {
-        if (!CreatePipe(pipe_stderr, &stderr_write_handle, &sa, 0)) {
+    if (perr) {
+        if (!CreatePipe(perr, &stderr_write_handle, &sa, 0)) {
             perror("pipe");
             goto error_close_stdout;
         }
-        if (!SetHandleInformation(*pipe_stderr, HANDLE_FLAG_INHERIT, 0)) {
+        if (!SetHandleInformation(*perr, HANDLE_FLAG_INHERIT, 0)) {
             LOGE("SetHandleInformation stderr failed");
             goto error_close_stderr;
         }
     }
 
-    STARTUPINFOW si;
+    STARTUPINFOEXW si;
     PROCESS_INFORMATION pi;
     memset(&si, 0, sizeof(si));
-    si.cb = sizeof(si);
-    if (pipe_stdin || pipe_stdout || pipe_stderr) {
-        si.dwFlags = STARTF_USESTDHANDLES;
-        if (pipe_stdin) {
-            si.hStdInput = stdin_read_handle;
+    si.StartupInfo.cb = sizeof(si);
+    HANDLE handles[3];
+
+    LPPROC_THREAD_ATTRIBUTE_LIST lpAttributeList = NULL;
+    if (handle_count) {
+        si.StartupInfo.dwFlags = STARTF_USESTDHANDLES;
+        unsigned i = 0;
+        if (pin) {
+            si.StartupInfo.hStdInput = stdin_read_handle;
+            handles[i++] = si.StartupInfo.hStdInput;
         }
-        if (pipe_stdout) {
-            si.hStdOutput = stdout_write_handle;
+        if (pout || inherit_stdout) {
+            si.StartupInfo.hStdOutput = pout ? stdout_write_handle
+                                             : GetStdHandle(STD_OUTPUT_HANDLE);
+            handles[i++] = si.StartupInfo.hStdOutput;
         }
-        if (pipe_stderr) {
-            si.hStdError = stderr_write_handle;
+        if (perr || inherit_stderr) {
+            si.StartupInfo.hStdError = perr ? stderr_write_handle
+                                            : GetStdHandle(STD_ERROR_HANDLE);
+            handles[i++] = si.StartupInfo.hStdError;
         }
+
+        SIZE_T size;
+        // Call it once to know the required buffer size
+        BOOL ok =
+            InitializeProcThreadAttributeList(NULL, 1, 0, &size)
+                || GetLastError() == ERROR_INSUFFICIENT_BUFFER;
+        if (!ok) {
+            goto error_close_stderr;
+        }
+
+        lpAttributeList = malloc(size);
+        if (!lpAttributeList) {
+            goto error_close_stderr;
+        }
+
+        ok = InitializeProcThreadAttributeList(lpAttributeList, 1, 0, &size);
+        if (!ok) {
+            free(lpAttributeList);
+            goto error_close_stderr;
+        }
+
+        ok = UpdateProcThreadAttribute(lpAttributeList, 0,
+                                       PROC_THREAD_ATTRIBUTE_HANDLE_LIST,
+                                       handles, handle_count * sizeof(HANDLE),
+                                       NULL, NULL);
+        if (!ok) {
+            goto error_free_attribute_list;
+        }
+
+        si.lpAttributeList = lpAttributeList;
     }
 
     char *cmd = malloc(CMD_MAX_LEN);
     if (!cmd || !build_cmd(cmd, CMD_MAX_LEN, argv)) {
-        *handle = NULL;
-        goto error_close_stderr;
+        goto error_free_attribute_list;
     }
 
-    wchar_t *wide = utf8_to_wide_char(cmd);
+    wchar_t *wide = sc_str_to_wchars(cmd);
     free(cmd);
     if (!wide) {
         LOGC("Could not allocate wide char string");
-        goto error_close_stderr;
+        goto error_free_attribute_list;
     }
 
-    if (!CreateProcessW(NULL, wide, NULL, NULL, TRUE, 0, NULL, NULL, &si,
-                        &pi)) {
+    BOOL bInheritHandles = handle_count > 0;
+    // DETACHED_PROCESS to disable stdin, stdout and stderr
+    DWORD dwCreationFlags = handle_count == 0 ? DETACHED_PROCESS
+                                              : EXTENDED_STARTUPINFO_PRESENT;
+    BOOL ok = CreateProcessW(NULL, wide, NULL, NULL, bInheritHandles,
+                             dwCreationFlags, NULL, NULL, &si.StartupInfo, &pi);
     free(wide);
-        *handle = NULL;
-
+    if (!ok) {
         if (GetLastError() == ERROR_FILE_NOT_FOUND) {
-            ret = PROCESS_ERROR_MISSING_BINARY;
+            ret = SC_PROCESS_ERROR_MISSING_BINARY;
         }
-        goto error_close_stderr;
+        goto error_free_attribute_list;
+    }
+
+    if (lpAttributeList) {
+        DeleteProcThreadAttributeList(lpAttributeList);
+        free(lpAttributeList);
     }
 
     // These handles are used by the child process, close them for this process
-    if (pipe_stdin) {
+    if (pin) {
         CloseHandle(stdin_read_handle);
     }
-    if (pipe_stdout) {
+    if (pout) {
         CloseHandle(stdout_write_handle);
     }
-    if (pipe_stderr) {
+    if (perr) {
         CloseHandle(stderr_write_handle);
     }
 
-    free(wide);
     *handle = pi.hProcess;
 
-    return PROCESS_SUCCESS;
+    return SC_PROCESS_SUCCESS;
 
+error_free_attribute_list:
+    if (lpAttributeList) {
+        DeleteProcThreadAttributeList(lpAttributeList);
+        free(lpAttributeList);
+    }
 error_close_stderr:
-    if (pipe_stderr) {
-        CloseHandle(*pipe_stderr);
+    if (perr) {
+        CloseHandle(*perr);
         CloseHandle(stderr_write_handle);
     }
 error_close_stdout:
-    if (pipe_stdout) {
-        CloseHandle(*pipe_stdout);
+    if (pout) {
+        CloseHandle(*pout);
         CloseHandle(stdout_write_handle);
     }
 error_close_stdin:
-    if (pipe_stdin) {
-        CloseHandle(*pipe_stdin);
+    if (pin) {
+        CloseHandle(*pin);
         CloseHandle(stdin_read_handle);
     }
 
     return ret;
 }
 
-enum process_result
-process_execute(const char *const argv[], HANDLE *handle) {
-    return process_execute_redirect(argv, handle, NULL, NULL, NULL);
-}
-
 bool
-process_terminate(HANDLE handle) {
+sc_process_terminate(HANDLE handle) {
     return TerminateProcess(handle, 1);
 }
 
-exit_code_t
-process_wait(HANDLE handle, bool close) {
+sc_exit_code
+sc_process_wait(HANDLE handle, bool close) {
     DWORD code;
     if (WaitForSingleObject(handle, INFINITE) != WAIT_OBJECT_0
             || !GetExitCodeProcess(handle, &code)) {
         // could not wait or retrieve the exit code
-        code = NO_EXIT_CODE; // max value, it's unsigned
+        code = SC_EXIT_CODE_NONE;
     }
     if (close) {
         CloseHandle(handle);
@@ -168,48 +229,14 @@ process_wait(HANDLE handle, bool close) {
 }
 
 void
-process_close(HANDLE handle) {
+sc_process_close(HANDLE handle) {
     bool closed = CloseHandle(handle);
     assert(closed);
     (void) closed;
 }
 
-char *
-get_executable_path(void) {
-    HMODULE hModule = GetModuleHandleW(NULL);
-    if (!hModule) {
-        return NULL;
-    }
-    WCHAR buf[MAX_PATH + 1]; // +1 for the null byte
-    int len = GetModuleFileNameW(hModule, buf, MAX_PATH);
-    if (!len) {
-        return NULL;
-    }
-    buf[len] = '\0';
-    return utf8_from_wide_char(buf);
-}
-
-bool
-is_regular_file(const char *path) {
-    wchar_t *wide_path = utf8_to_wide_char(path);
-    if (!wide_path) {
-        LOGC("Could not allocate wide char string");
-        return false;
-    }
-
-    struct _stat path_stat;
-    int r = _wstat(wide_path, &path_stat);
-    free(wide_path);
-
-    if (r) {
-        perror("stat");
-        return false;
-    }
-    return S_ISREG(path_stat.st_mode);
-}
-
 ssize_t
-read_pipe(HANDLE pipe, char *data, size_t len) {
+sc_pipe_read(HANDLE pipe, char *data, size_t len) {
     DWORD r;
     if (!ReadFile(pipe, data, len, &r, NULL)) {
         return -1;
@@ -218,7 +245,7 @@ read_pipe(HANDLE pipe, char *data, size_t len) {
 }
 
 void
-close_pipe(HANDLE pipe) {
+sc_pipe_close(HANDLE pipe) {
     if (!CloseHandle(pipe)) {
         LOGW("Cannot close pipe");
     }

app/src/util/file.c

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

app/src/util/file.h

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

app/src/util/intr.c

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

app/src/util/intr.h

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

app/src/util/net.c

@@ -46,13 +46,13 @@ static inline sc_socket
 wrap(sc_raw_socket sock) {
 #ifdef __WINDOWS__
     if (sock == INVALID_SOCKET) {
-        return SC_INVALID_SOCKET;
+        return SC_SOCKET_NONE;
     }
 
     struct sc_socket_windows *socket = malloc(sizeof(*socket));
     if (!socket) {
         closesocket(sock);
-        return SC_INVALID_SOCKET;
+        return SC_SOCKET_NONE;
     }
 
     socket->socket = sock;
@@ -67,7 +67,7 @@ wrap(sc_raw_socket sock) {
 static inline sc_raw_socket
 unwrap(sc_socket socket) {
 #ifdef __WINDOWS__
-    if (socket == SC_INVALID_SOCKET) {
+    if (socket == SC_SOCKET_NONE) {
         return INVALID_SOCKET;
     }
 
@@ -94,13 +94,18 @@ net_perror(const char *s) {
 }
 
 sc_socket
-net_connect(uint32_t addr, uint16_t port) {
+net_socket(void) {
     sc_raw_socket raw_sock = socket(AF_INET, SOCK_STREAM, 0);
     sc_socket sock = wrap(raw_sock);
-    if (sock == SC_INVALID_SOCKET) {
+    if (sock == SC_SOCKET_NONE) {
         net_perror("socket");
-        return SC_INVALID_SOCKET;
     }
+    return sock;
+}
+
+bool
+net_connect(sc_socket socket, uint32_t addr, uint16_t port) {
+    sc_raw_socket raw_sock = unwrap(socket);
 
     SOCKADDR_IN sin;
     sin.sin_family = AF_INET;
@@ -109,21 +114,15 @@ net_connect(uint32_t addr, uint16_t port) {
 
     if (connect(raw_sock, (SOCKADDR *) &sin, sizeof(sin)) == SOCKET_ERROR) {
         net_perror("connect");
-        net_close(sock);
-        return SC_INVALID_SOCKET;
+        return false;
     }
 
-    return sock;
+    return true;
 }
 
-sc_socket
-net_listen(uint32_t addr, uint16_t port, int backlog) {
-    sc_raw_socket raw_sock = socket(AF_INET, SOCK_STREAM, 0);
-    sc_socket sock = wrap(raw_sock);
-    if (sock == SC_INVALID_SOCKET) {
-        net_perror("socket");
-        return SC_INVALID_SOCKET;
-    }
+bool
+net_listen(sc_socket socket, uint32_t addr, uint16_t port, int backlog) {
+    sc_raw_socket raw_sock = unwrap(socket);
 
     int reuse = 1;
     if (setsockopt(raw_sock, SOL_SOCKET, SO_REUSEADDR, (const void *) &reuse,
@@ -138,17 +137,15 @@ net_listen(uint32_t addr, uint16_t port, int backlog) {
 
     if (bind(raw_sock, (SOCKADDR *) &sin, sizeof(sin)) == SOCKET_ERROR) {
         net_perror("bind");
-        net_close(sock);
-        return SC_INVALID_SOCKET;
+        return false;
     }
 
     if (listen(raw_sock, backlog) == SOCKET_ERROR) {
         net_perror("listen");
-        net_close(sock);
-        return SC_INVALID_SOCKET;
+        return false;
     }
 
-    return sock;
+    return true;
 }
 
 sc_socket
@@ -198,7 +195,7 @@ net_send_all(sc_socket socket, const void *buf, size_t len) {
 
 bool
 net_interrupt(sc_socket socket) {
-    assert(socket != SC_INVALID_SOCKET);
+    assert(socket != SC_SOCKET_NONE);
 
     sc_raw_socket raw_sock = unwrap(socket);
 

app/src/util/net.h

@@ -11,7 +11,7 @@
 
 # include <winsock2.h>
 # include <stdatomic.h>
-# define SC_INVALID_SOCKET NULL
+# define SC_SOCKET_NONE NULL
   typedef struct sc_socket_windows {
       SOCKET socket;
       atomic_flag closed;
@@ -20,10 +20,13 @@
 #else // not __WINDOWS__
 
 # include <sys/socket.h>
-# define SC_INVALID_SOCKET -1
+# define SC_SOCKET_NONE -1
   typedef int sc_socket;
+
 #endif
 
+#define IPV4_LOCALHOST 0x7F000001
+
 bool
 net_init(void);
 
@@ -31,10 +34,13 @@ void
 net_cleanup(void);
 
 sc_socket
-net_connect(uint32_t addr, uint16_t port);
+net_socket(void);
 
-sc_socket
-net_listen(uint32_t addr, uint16_t port, int backlog);
+bool
+net_connect(sc_socket socket, uint32_t addr, uint16_t port);
+
+bool
+net_listen(sc_socket socket, uint32_t addr, uint16_t port, int backlog);
 
 sc_socket
 net_accept(sc_socket server_socket);

app/src/util/net_intr.c

@@ -0,0 +1,97 @@
+#include "net_intr.h"
+
+bool
+net_connect_intr(struct sc_intr *intr, sc_socket socket, uint32_t addr,
+                 uint16_t port) {
+    if (!sc_intr_set_socket(intr, socket)) {
+        // Already interrupted
+        return false;
+    }
+
+    bool ret = net_connect(socket, addr, port);
+
+    sc_intr_set_socket(intr, SC_SOCKET_NONE);
+    return ret;
+}
+
+bool
+net_listen_intr(struct sc_intr *intr, sc_socket socket, uint32_t addr,
+                uint16_t port, int backlog) {
+    if (!sc_intr_set_socket(intr, socket)) {
+        // Already interrupted
+        return false;
+    }
+
+    bool ret = net_listen(socket, addr, port, backlog);
+
+    sc_intr_set_socket(intr, SC_SOCKET_NONE);
+    return ret;
+}
+
+sc_socket
+net_accept_intr(struct sc_intr *intr, sc_socket server_socket) {
+    if (!sc_intr_set_socket(intr, server_socket)) {
+        // Already interrupted
+        return SC_SOCKET_NONE;
+    }
+
+    sc_socket socket = net_accept(server_socket);
+
+    sc_intr_set_socket(intr, SC_SOCKET_NONE);
+    return socket;
+}
+
+ssize_t
+net_recv_intr(struct sc_intr *intr, sc_socket socket, void *buf, size_t len) {
+    if (!sc_intr_set_socket(intr, socket)) {
+        // Already interrupted
+        return -1;
+    }
+
+    ssize_t r = net_recv(socket, buf, len);
+
+    sc_intr_set_socket(intr, SC_SOCKET_NONE);
+    return r;
+}
+
+ssize_t
+net_recv_all_intr(struct sc_intr *intr, sc_socket socket, void *buf,
+                  size_t len) {
+    if (!sc_intr_set_socket(intr, socket)) {
+        // Already interrupted
+        return -1;
+    }
+
+    ssize_t r = net_recv_all(socket, buf, len);
+
+    sc_intr_set_socket(intr, SC_SOCKET_NONE);
+    return r;
+}
+
+ssize_t
+net_send_intr(struct sc_intr *intr, sc_socket socket, const void *buf,
+              size_t len) {
+    if (!sc_intr_set_socket(intr, socket)) {
+        // Already interrupted
+        return -1;
+    }
+
+    ssize_t w = net_send(socket, buf, len);
+
+    sc_intr_set_socket(intr, SC_SOCKET_NONE);
+    return w;
+}
+
+ssize_t
+net_send_all_intr(struct sc_intr *intr, sc_socket socket, const void *buf,
+                  size_t len) {
+    if (!sc_intr_set_socket(intr, socket)) {
+        // Already interrupted
+        return -1;
+    }
+
+    ssize_t w = net_send_all(socket, buf, len);
+
+    sc_intr_set_socket(intr, SC_SOCKET_NONE);
+    return w;
+}

app/src/util/net_intr.h

@@ -0,0 +1,35 @@
+#ifndef SC_NET_INTR_H
+#define SC_NET_INTR_H
+
+#include "common.h"
+
+#include "intr.h"
+#include "net.h"
+
+bool
+net_connect_intr(struct sc_intr *intr, sc_socket socket, uint32_t addr,
+                 uint16_t port);
+
+bool
+net_listen_intr(struct sc_intr *intr, sc_socket socket, uint32_t addr,
+                uint16_t port, int backlog);
+
+sc_socket
+net_accept_intr(struct sc_intr *intr, sc_socket server_socket);
+
+ssize_t
+net_recv_intr(struct sc_intr *intr, sc_socket socket, void *buf, size_t len);
+
+ssize_t
+net_recv_all_intr(struct sc_intr *intr, sc_socket socket, void *buf,
+                  size_t len);
+
+ssize_t
+net_send_intr(struct sc_intr *intr, sc_socket socket, const void *buf,
+              size_t len);
+
+ssize_t
+net_send_all_intr(struct sc_intr *intr, sc_socket socket, const void *buf,
+                  size_t len);
+
+#endif

app/src/util/process.c

@@ -1,18 +1,25 @@
 #include "process.h"
 
+#include <assert.h>
 #include <libgen.h>
 #include "log.h"
 
+enum sc_process_result
+sc_process_execute(const char *const argv[], sc_pid *pid, unsigned inherit) {
+    return sc_process_execute_p(argv, pid, inherit, NULL, NULL, NULL);
+}
+
 bool
-process_check_success(process_t proc, const char *name, bool close) {
-    if (proc == PROCESS_NONE) {
+sc_process_check_success(sc_pid pid, const char *name, bool close) {
+    if (pid == SC_PROCESS_NONE) {
         LOGE("Could not execute \"%s\"", name);
         return false;
     }
-    exit_code_t exit_code = process_wait(proc, close);
+    sc_exit_code exit_code = sc_process_wait(pid, close);
     if (exit_code) {
-        if (exit_code != NO_EXIT_CODE) {
-            LOGE("\"%s\" returned with value %" PRIexitcode, name, exit_code);
+        if (exit_code != SC_EXIT_CODE_NONE) {
+            LOGE("\"%s\" returned with value %" SC_PRIexitcode, name,
+                 exit_code);
         } else {
             LOGE("\"%s\" exited unexpectedly", name);
         }
@@ -21,52 +28,11 @@ process_check_success(process_t proc, const char *name, bool close) {
     return true;
 }
 
-char *
-get_local_file_path(const char *name) {
-    char *executable_path = get_executable_path();
-    if (!executable_path) {
-        return NULL;
-    }
-
-    // dirname() does not work correctly everywhere, so get the parent
-    // directory manually.
-    // See <https://github.com/Genymobile/scrcpy/issues/2619>
-    char *p = strrchr(executable_path, PATH_SEPARATOR);
-    if (!p) {
-        LOGE("Unexpected executable path: \"%s\" (it should contain a '%c')",
-             executable_path, PATH_SEPARATOR);
-        free(executable_path);
-        return NULL;
-    }
-
-    *p = '\0'; // modify executable_path in place
-    char *dir = executable_path;
-    size_t dirlen = strlen(dir);
-    size_t namelen = strlen(name);
-
-    size_t len = dirlen + namelen + 2; // +2: '/' and '\0'
-    char *file_path = malloc(len);
-    if (!file_path) {
-        LOGE("Could not alloc path");
-        free(executable_path);
-        return NULL;
-    }
-
-    memcpy(file_path, dir, dirlen);
-    file_path[dirlen] = PATH_SEPARATOR;
-    // namelen + 1 to copy the final '\0'
-    memcpy(&file_path[dirlen + 1], name, namelen + 1);
-
-    free(executable_path);
-
-    return file_path;
-}
-
 ssize_t
-read_pipe_all(pipe_t pipe, char *data, size_t len) {
+sc_pipe_read_all(sc_pipe pipe, char *data, size_t len) {
     size_t copied = 0;
     while (len > 0) {
-        ssize_t r = read_pipe(pipe, data, len);
+        ssize_t r = sc_pipe_read(pipe, data, len);
         if (r <= 0) {
             return copied ? (ssize_t) copied : r;
         }
@@ -76,3 +42,80 @@ read_pipe_all(pipe_t pipe, char *data, size_t len) {
     }
     return copied;
 }
+
+static int
+run_observer(void *data) {
+    struct sc_process_observer *observer = data;
+    sc_process_wait(observer->pid, false); // ignore exit code
+
+    sc_mutex_lock(&observer->mutex);
+    observer->terminated = true;
+    sc_cond_signal(&observer->cond_terminated);
+    sc_mutex_unlock(&observer->mutex);
+
+    if (observer->listener) {
+        observer->listener->on_terminated(observer->listener_userdata);
+    }
+
+    return 0;
+}
+
+bool
+sc_process_observer_init(struct sc_process_observer *observer, sc_pid pid,
+                         const struct sc_process_listener *listener,
+                         void *listener_userdata) {
+    // Either no listener, or on_terminated() is defined
+    assert(!listener || listener->on_terminated);
+
+    bool ok = sc_mutex_init(&observer->mutex);
+    if (!ok) {
+        return false;
+    }
+
+    ok = sc_cond_init(&observer->cond_terminated);
+    if (!ok) {
+        sc_mutex_destroy(&observer->mutex);
+        return false;
+    }
+
+    observer->pid = pid;
+    observer->listener = listener;
+    observer->listener_userdata = listener_userdata;
+    observer->terminated = false;
+
+    ok = sc_thread_create(&observer->thread, run_observer, "process_observer",
+                          observer);
+    if (!ok) {
+        sc_cond_destroy(&observer->cond_terminated);
+        sc_mutex_destroy(&observer->mutex);
+        return false;
+    }
+
+    return true;
+}
+
+bool
+sc_process_observer_timedwait(struct sc_process_observer *observer,
+                              sc_tick deadline) {
+    sc_mutex_lock(&observer->mutex);
+    bool timed_out = false;
+    while (!observer->terminated && !timed_out) {
+        timed_out = !sc_cond_timedwait(&observer->cond_terminated,
+                                       &observer->mutex, deadline);
+    }
+    bool terminated = observer->terminated;
+    sc_mutex_unlock(&observer->mutex);
+
+    return terminated;
+}
+
+void
+sc_process_observer_join(struct sc_process_observer *observer) {
+    sc_thread_join(&observer->thread, NULL);
+}
+
+void
+sc_process_observer_destroy(struct sc_process_observer *observer) {
+    sc_cond_destroy(&observer->cond_terminated);
+    sc_mutex_destroy(&observer->mutex);
+}

app/src/util/process.h

@@ -4,102 +4,184 @@
 #include "common.h"
 
 #include <stdbool.h>
+#include "util/thread.h"
 
 #ifdef _WIN32
 
  // not needed here, but winsock2.h must never be included AFTER windows.h
 # include <winsock2.h>
 # include <windows.h>
-# define PATH_SEPARATOR '\\'
-# define PRIexitcode "lu"
+# define SC_PRIexitcode "lu"
 // <https://stackoverflow.com/a/44383330/1987178>
-# define PRIsizet "Iu"
-# define PROCESS_NONE NULL
-# define NO_EXIT_CODE -1u // max value as unsigned
-  typedef HANDLE process_t;
-  typedef DWORD exit_code_t;
-  typedef HANDLE pipe_t;
+# define SC_PRIsizet "Iu"
+# define SC_PROCESS_NONE NULL
+# define SC_EXIT_CODE_NONE -1u // max value as unsigned
+  typedef HANDLE sc_pid;
+  typedef DWORD sc_exit_code;
+  typedef HANDLE sc_pipe;
 
 #else
 
 # include <sys/types.h>
-# define PATH_SEPARATOR '/'
-# define PRIsizet "zu"
-# define PRIexitcode "d"
-# define PROCESS_NONE -1
-# define NO_EXIT_CODE -1
-  typedef pid_t process_t;
-  typedef int exit_code_t;
-  typedef int pipe_t;
+# define SC_PRIsizet "zu"
+# define SC_PRIexitcode "d"
+# define SC_PROCESS_NONE -1
+# define SC_EXIT_CODE_NONE -1
+  typedef pid_t sc_pid;
+  typedef int sc_exit_code;
+  typedef int sc_pipe;
 
 #endif
 
-enum process_result {
-    PROCESS_SUCCESS,
-    PROCESS_ERROR_GENERIC,
-    PROCESS_ERROR_MISSING_BINARY,
+struct sc_process_listener {
+    void (*on_terminated)(void *userdata);
 };
 
-// execute the command and write the result to the output parameter "process"
-enum process_result
-process_execute(const char *const argv[], process_t *process);
+/**
+ * Tool to observe process termination
+ *
+ * To keep things simple and multiplatform, it runs a separate thread to wait
+ * for process termination (without closing the process to avoid race
+ * conditions).
+ *
+ * It allows a caller to block until the process is terminated (with a
+ * timeout), and to be notified asynchronously from the observer thread.
+ *
+ * The process is not owned by the observer (the observer will never close it).
+ */
+struct sc_process_observer {
+    sc_pid pid;
 
-enum process_result
-process_execute_redirect(const char *const argv[], process_t *process,
-                         pipe_t *pipe_stdin, pipe_t *pipe_stdout,
-                         pipe_t *pipe_stderr);
+    sc_mutex mutex;
+    sc_cond cond_terminated;
+    bool terminated;
 
+    sc_thread thread;
+    const struct sc_process_listener *listener;
+    void *listener_userdata;
+};
+
+enum sc_process_result {
+    SC_PROCESS_SUCCESS,
+    SC_PROCESS_ERROR_GENERIC,
+    SC_PROCESS_ERROR_MISSING_BINARY,
+};
+
+#define SC_STDOUT (1 << 0)
+#define SC_STDERR (1 << 1)
+
+/**
+ * Execute the command and write the process id to `pid`
+ *
+ * The parameter `inherit` is a OR of any of SC_STDOUT and SC_STDERR. It
+ * indicates if stdout and stderr must be inherited from the scrcpy process (in
+ * other words, if the process must output to the scrcpy console).
+ */
+enum sc_process_result
+sc_process_execute(const char *const argv[], sc_pid *pid, unsigned inherit);
+
+/**
+ * Execute the command and write the process id to `pid`
+ *
+ * If not NULL, provide a pipe for stdin (`pin`), stdout (`pout`) and stderr
+ * (`perr`).
+ *
+ * The parameter `inherit` has the same semantics as in `sc_process_execute()`.
+ * If `pout` is not NULL, then `inherit` MUST NOT contain SC_STDOUT.
+ * If `perr` is not NULL, then `inherit` MUST NOT contain SC_STDERR.
+ */
+enum sc_process_result
+sc_process_execute_p(const char *const argv[], sc_pid *pid, unsigned inherit,
+                     sc_pipe *pin, sc_pipe *pout, sc_pipe *perr);
+
+/**
+ * Kill the process
+ */
 bool
-process_terminate(process_t pid);
+sc_process_terminate(sc_pid pid);
 
-// kill the process
-bool
-process_terminate(process_t pid);
+/**
+ * Wait and close the process (similar to waitpid())
+ *
+ * The `close` flag indicates if the process must be _closed_ (reaped) (passing
+ * false is equivalent to enable WNOWAIT in waitid()).
+ */
+sc_exit_code
+sc_process_wait(sc_pid pid, bool close);
 
-// wait and close the process (like waitpid())
-// the "close" flag indicates if the process must be "closed" (reaped)
-// (passing false is equivalent to enable WNOWAIT in waitid())
-exit_code_t
-process_wait(process_t pid, bool close);
-
-// close the process
-//
-// Semantically, process_wait(close) = process_wait(noclose) + process_close
+/**
+ * Close (reap) the process
+ *
+ * Semantically:
+ *    sc_process_wait(close) = sc_process_wait(noclose) + sc_process_close()
+ */
 void
-process_close(process_t pid);
+sc_process_close(sc_pid pid);
 
-// convenience function to wait for a successful process execution
-// automatically log process errors with the provided process name
+/**
+ * Convenience function to wait for a successful process execution
+ *
+ * Automatically log process errors with the provided process name.
+ */
 bool
-process_check_success(process_t proc, const char *name, bool close);
-
-#ifndef _WIN32
-// only used to find package manager, not implemented for Windows
-bool
-search_executable(const char *file);
-#endif
-
-// return the absolute path of the executable (the scrcpy binary)
-// may be NULL on error; to be freed by free()
-char *
-get_executable_path(void);
-
-// Return the absolute path of a file in the same directory as he executable.
-// May be NULL on error. To be freed by free().
-char *
-get_local_file_path(const char *name);
-
-// returns true if the file exists and is not a directory
-bool
-is_regular_file(const char *path);
+sc_process_check_success(sc_pid pid, const char *name, bool close);
 
+/**
+ * Read from the pipe
+ *
+ * Same semantic as read().
+ */
 ssize_t
-read_pipe(pipe_t pipe, char *data, size_t len);
+sc_pipe_read(sc_pipe pipe, char *data, size_t len);
 
+/**
+ * Read exactly `len` chars from a pipe (unless EOF)
+ */
 ssize_t
-read_pipe_all(pipe_t pipe, char *data, size_t len);
+sc_pipe_read_all(sc_pipe pipe, char *data, size_t len);
 
+/**
+ * Close the pipe
+ */
 void
-close_pipe(pipe_t pipe);
+sc_pipe_close(sc_pipe pipe);
+
+/**
+ * Start observing process
+ *
+ * The listener is optional. If set, its callback will be called from the
+ * observer thread once the process is terminated.
+ */
+bool
+sc_process_observer_init(struct sc_process_observer *observer, sc_pid pid,
+                         const struct sc_process_listener *listener,
+                         void *listener_userdata);
+
+/**
+ * Wait for process termination until a deadline
+ *
+ * Return true if the process is already terminated. Return false if the
+ * process terminatation has not been detected yet (however, it may have
+ * terminated in the meantime).
+ *
+ * To wait without timeout/deadline, just use sc_process_wait() instead.
+ */
+bool
+sc_process_observer_timedwait(struct sc_process_observer *observer,
+                              sc_tick deadline);
+
+/**
+ * Join the observer thread
+ */
+void
+sc_process_observer_join(struct sc_process_observer *observer);
+
+/**
+ * Destroy the observer
+ *
+ * This does not close the associated process.
+ */
+void
+sc_process_observer_destroy(struct sc_process_observer *observer);
 
 #endif

app/src/util/process_intr.c

@@ -0,0 +1,50 @@
+#include "process_intr.h"
+
+bool
+sc_process_check_success_intr(struct sc_intr *intr, sc_pid pid,
+                              const char *name, bool close) {
+    if (!sc_intr_set_process(intr, pid)) {
+        // Already interrupted
+        return false;
+    }
+
+    // Always pass close=false, interrupting would be racy otherwise
+    bool ret = sc_process_check_success(pid, name, false);
+
+    sc_intr_set_process(intr, SC_PROCESS_NONE);
+
+    if (close) {
+        // Close separately
+        sc_process_close(pid);
+    }
+
+    return ret;
+}
+
+ssize_t
+sc_pipe_read_intr(struct sc_intr *intr, sc_pid pid, sc_pipe pipe, char *data,
+                  size_t len) {
+    if (!sc_intr_set_process(intr, pid)) {
+        // Already interrupted
+        return false;
+    }
+
+    ssize_t ret = sc_pipe_read(pipe, data, len);
+
+    sc_intr_set_process(intr, SC_PROCESS_NONE);
+    return ret;
+}
+
+ssize_t
+sc_pipe_read_all_intr(struct sc_intr *intr, sc_pid pid, sc_pipe pipe,
+                      char *data, size_t len) {
+    if (!sc_intr_set_process(intr, pid)) {
+        // Already interrupted
+        return false;
+    }
+
+    ssize_t ret = sc_pipe_read_all(pipe, data, len);
+
+    sc_intr_set_process(intr, SC_PROCESS_NONE);
+    return ret;
+}

app/src/util/process_intr.h

@@ -0,0 +1,21 @@
+#ifndef SC_PROCESS_INTR_H
+#define SC_PROCESS_INTR_H
+
+#include "common.h"
+
+#include "intr.h"
+#include "process.h"
+
+bool
+sc_process_check_success_intr(struct sc_intr *intr, sc_pid pid,
+                              const char *name, bool close);
+
+ssize_t
+sc_pipe_read_intr(struct sc_intr *intr, sc_pid pid, sc_pipe pipe, char *data,
+                  size_t len);
+
+ssize_t
+sc_pipe_read_all_intr(struct sc_intr *intr, sc_pid pid, sc_pipe pipe,
+                      char *data, size_t len);
+
+#endif

app/src/util/str.c

@@ -1,9 +1,11 @@
-#include "str_util.h"
+#include "str.h"
 
+#include <assert.h>
 #include <errno.h>
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
+#include "util/strbuf.h"
 
 #ifdef _WIN32
 # include <windows.h>
@@ -11,7 +13,7 @@
 #endif
 
 size_t
-xstrncpy(char *dest, const char *src, size_t n) {
+sc_strncpy(char *dest, const char *src, size_t n) {
     size_t i;
     for (i = 0; i < n - 1 && src[i] != '\0'; ++i)
         dest[i] = src[i];
@@ -21,7 +23,7 @@ xstrncpy(char *dest, const char *src, size_t n) {
 }
 
 size_t
-xstrjoin(char *dst, const char *const tokens[], char sep, size_t n) {
+sc_str_join(char *dst, const char *const tokens[], char sep, size_t n) {
     const char *const *remaining = tokens;
     const char *token = *remaining++;
     size_t i = 0;
@@ -31,7 +33,7 @@ xstrjoin(char *dst, const char *const tokens[], char sep, size_t n) {
             if (i == n)
                 goto truncated;
         }
-        size_t w = xstrncpy(dst + i, token, n - i);
+        size_t w = sc_strncpy(dst + i, token, n - i);
         if (w >= n - i)
             goto truncated;
         i += w;
@@ -45,7 +47,7 @@ truncated:
 }
 
 char *
-strquote(const char *src) {
+sc_str_quote(const char *src) {
     size_t len = strlen(src);
     char *quoted = malloc(len + 3);
     if (!quoted) {
@@ -59,7 +61,7 @@ strquote(const char *src) {
 }
 
 bool
-parse_integer(const char *s, long *out) {
+sc_str_parse_integer(const char *s, long *out) {
     char *endptr;
     if (*s == '\0') {
         return false;
@@ -78,7 +80,8 @@ parse_integer(const char *s, long *out) {
 }
 
 size_t
-parse_integers(const char *s, const char sep, size_t max_items, long *out) {
+sc_str_parse_integers(const char *s, const char sep, size_t max_items,
+                      long *out) {
     size_t count = 0;
     char *endptr;
     do {
@@ -107,7 +110,7 @@ parse_integers(const char *s, const char sep, size_t max_items, long *out) {
 }
 
 bool
-parse_integer_with_suffix(const char *s, long *out) {
+sc_str_parse_integer_with_suffix(const char *s, long *out) {
     char *endptr;
     if (*s == '\0') {
         return false;
@@ -141,7 +144,7 @@ parse_integer_with_suffix(const char *s, long *out) {
 }
 
 bool
-strlist_contains(const char *list, char sep, const char *s) {
+sc_str_list_contains(const char *list, char sep, const char *s) {
     char *p;
     do {
         p = strchr(list, sep);
@@ -159,7 +162,7 @@ strlist_contains(const char *list, char sep, const char *s) {
 }
 
 size_t
-utf8_truncation_index(const char *utf8, size_t max_len) {
+sc_str_utf8_truncation_index(const char *utf8, size_t max_len) {
     size_t len = strlen(utf8);
     if (len <= max_len) {
         return len;
@@ -177,7 +180,7 @@ utf8_truncation_index(const char *utf8, size_t max_len) {
 #ifdef _WIN32
 
 wchar_t *
-utf8_to_wide_char(const char *utf8) {
+sc_str_to_wchars(const char *utf8) {
     int len = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL, 0);
     if (!len) {
         return NULL;
@@ -193,7 +196,7 @@ utf8_to_wide_char(const char *utf8) {
 }
 
 char *
-utf8_from_wide_char(const wchar_t *ws) {
+sc_str_from_wchars(const wchar_t *ws) {
     int len = WideCharToMultiByte(CP_UTF8, 0, ws, -1, NULL, 0, NULL, NULL);
     if (!len) {
         return NULL;
@@ -209,3 +212,90 @@ utf8_from_wide_char(const wchar_t *ws) {
 }
 
 #endif
+
+char *
+sc_str_wrap_lines(const char *input, unsigned columns, unsigned indent) {
+    assert(indent < columns);
+
+    struct sc_strbuf buf;
+
+    // The output string should not be much longer than the input string (just
+    // a few '\n' added), so this initial capacity should hopefully almost
+    // always avoid internal realloc() in string buffer
+    size_t cap = strlen(input) * 3 / 2;
+
+    if (!sc_strbuf_init(&buf, cap)) {
+        return false;
+    }
+
+#define APPEND(S,N) if (!sc_strbuf_append(&buf, S, N)) goto error
+#define APPEND_CHAR(C) if (!sc_strbuf_append_char(&buf, C)) goto error
+#define APPEND_N(C,N) if (!sc_strbuf_append_n(&buf, C, N)) goto error
+#define APPEND_INDENT() if (indent) APPEND_N(' ', indent)
+
+    APPEND_INDENT();
+
+    // The last separator encountered, it must be inserted only conditionnaly,
+    // depending on the next token
+    char pending = 0;
+
+    // col tracks the current column in the current line
+    size_t col = indent;
+    while (*input) {
+        size_t sep_idx = strcspn(input, "\n ");
+        size_t new_col = col + sep_idx;
+        if (pending == ' ') {
+            // The pending space counts
+            ++new_col;
+        }
+        bool wrap = new_col > columns;
+
+        char sep = input[sep_idx];
+        if (sep == ' ')
+            sep = ' ';
+
+        if (wrap) {
+            APPEND_CHAR('\n');
+            APPEND_INDENT();
+            col = indent;
+        } else if (pending) {
+            APPEND_CHAR(pending);
+            ++col;
+            if (pending == '\n')
+            {
+                APPEND_INDENT();
+                col = indent;
+            }
+        }
+
+        if (sep_idx) {
+            APPEND(input, sep_idx);
+            col += sep_idx;
+        }
+
+        pending = sep;
+
+        input += sep_idx;
+        if (*input != '\0') {
+            // Skip the separator
+            ++input;
+        }
+    }
+
+    if (pending)
+        APPEND_CHAR(pending);
+
+    return buf.s;
+
+error:
+    free(buf.s);
+    return NULL;
+}
+
+size_t
+sc_str_truncate(char *data, size_t len, const char *endchars) {
+    data[len - 1] = '\0';
+    size_t idx = strcspn(data, endchars);
+    data[idx] = '\0';
+    return idx;
+}

app/src/util/str.h

@@ -0,0 +1,117 @@
+#ifndef SC_STR_H
+#define SC_STR_H
+
+#include "common.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+
+/**
+ * Like strncpy(), except:
+ *  - it copies at most n-1 chars
+ *  - the dest string is nul-terminated
+ *  - it does not write useless bytes if strlen(src) < n
+ *  - it returns the number of chars actually written (max n-1) if src has
+ *    been copied completely, or n if src has been truncated
+ */
+size_t
+sc_strncpy(char *dest, const char *src, size_t n);
+
+/**
+ * Join tokens by separator `sep` into `dst`
+ *
+ * Return the number of chars actually written (max n-1) if no truncation
+ * occurred, or n if truncated.
+ */
+size_t
+sc_str_join(char *dst, const char *const tokens[], char sep, size_t n);
+
+/**
+ * Quote a string
+ *
+ * Return a new allocated string, surrounded with quotes (`"`).
+ */
+char *
+sc_str_quote(const char *src);
+
+/**
+ * Parse `s` as an integer into `out`
+ *
+ * Return true if the conversion succeeded, false otherwise.
+ */
+bool
+sc_str_parse_integer(const char *s, long *out);
+
+/**
+ * Parse `s` as integers separated by `sep` (for example `1234:2000`) into `out`
+ *
+ * Returns the number of integers on success, 0 on failure.
+ */
+size_t
+sc_str_parse_integers(const char *s, const char sep, size_t max_items,
+                      long *out);
+
+/**
+ * Parse `s` as an integer into `out`
+ *
+ * Like `sc_str_parse_integer()`, but accept 'k'/'K' (x1000) and 'm'/'M'
+ * (x1000000) as suffixes.
+ *
+ * Return true if the conversion succeeded, false otherwise.
+ */
+bool
+sc_str_parse_integer_with_suffix(const char *s, long *out);
+
+/**
+ * Search `s` in the list separated by `sep`
+ *
+ * For example, sc_str_list_contains("a,bc,def", ',', "bc") returns true.
+ */
+bool
+sc_str_list_contains(const char *list, char sep, const char *s);
+
+/**
+ * Return the index to truncate a UTF-8 string at a valid position
+ */
+size_t
+sc_str_utf8_truncation_index(const char *utf8, size_t max_len);
+
+#ifdef _WIN32
+/**
+ * Convert a UTF-8 string to a wchar_t string
+ *
+ * Return the new allocated string, to be freed by the caller.
+ */
+wchar_t *
+sc_str_to_wchars(const char *utf8);
+
+/**
+ * Convert a wchar_t string to a UTF-8 string
+ *
+ * Return the new allocated string, to be freed by the caller.
+ */
+char *
+sc_str_from_wchars(const wchar_t *s);
+#endif
+
+/**
+ * Wrap input lines to fit in `columns` columns
+ *
+ * Break input lines at word boundaries (spaces) so that they fit in `columns`
+ * columns, left-indented by `indent` spaces.
+ */
+char *
+sc_str_wrap_lines(const char *input, unsigned columns, unsigned indent);
+
+/**
+ * Truncate the data after any of the characters from `endchars`
+ *
+ * An '\0' is always written at the end of the data, even if no newline
+ * character is encountered.
+ *
+ * Return the size of the resulting line.
+ */
+size_t
+sc_str_truncate(char *data, size_t len, const char *endchars);
+
+#endif

app/src/util/str_util.h

@@ -1,65 +0,0 @@
-#ifndef STRUTIL_H
-#define STRUTIL_H
-
-#include "common.h"
-
-#include <stdbool.h>
-#include <stddef.h>
-
-// like strncpy, except:
-//  - it copies at most n-1 chars
-//  - the dest string is nul-terminated
-//  - it does not write useless bytes if strlen(src) < n
-//  - it returns the number of chars actually written (max n-1) if src has
-//    been copied completely, or n if src has been truncated
-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
-// occurred, or n if truncated
-size_t
-xstrjoin(char *dst, const char *const tokens[], char sep, size_t n);
-
-// quote a string
-// returns the new allocated string, to be freed by the caller
-char *
-strquote(const char *src);
-
-// parse s as an integer into value
-// returns true if the conversion succeeded, false otherwise
-bool
-parse_integer(const char *s, long *out);
-
-// parse s as integers separated by sep (for example '1234:2000')
-// returns the number of integers on success, 0 on failure
-size_t
-parse_integers(const char *s, const char sep, size_t max_items, long *out);
-
-// parse s as an integer into value
-// like parse_integer(), but accept 'k'/'K' (x1000) and 'm'/'M' (x1000000) as
-// suffix
-// returns true if the conversion succeeded, false otherwise
-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);
-
-#ifdef _WIN32
-// convert a UTF-8 string to a wchar_t string
-// returns the new allocated string, to be freed by the caller
-wchar_t *
-utf8_to_wide_char(const char *utf8);
-
-char *
-utf8_from_wide_char(const wchar_t *s);
-#endif
-
-#endif

app/src/util/strbuf.c

@@ -0,0 +1,87 @@
+#include "strbuf.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <stdio.h>
+
+bool
+sc_strbuf_init(struct sc_strbuf *buf, size_t init_cap) {
+    buf->s = malloc(init_cap + 1); // +1 for '\0'
+    if (!buf->s) {
+        return false;
+    }
+
+    buf->len = 0;
+    buf->cap = init_cap;
+    return true;
+}
+
+static bool
+sc_strbuf_reserve(struct sc_strbuf *buf, size_t len) {
+    if (buf->len + len > buf->cap) {
+        size_t new_cap = buf->cap * 3 / 2 + len;
+        char *s = realloc(buf->s, new_cap + 1); // +1 for '\0'
+        if (!s) {
+            // Leave the old buf->s
+            return false;
+        }
+        buf->s = s;
+        buf->cap = new_cap;
+    }
+    return true;
+}
+
+bool
+sc_strbuf_append(struct sc_strbuf *buf, const char *s, size_t len) {
+    assert(s);
+    assert(*s);
+    assert(strlen(s) >= len);
+    if (!sc_strbuf_reserve(buf, len)) {
+        return false;
+    }
+
+    memcpy(&buf->s[buf->len], s, len);
+    buf->len += len;
+    buf->s[buf->len] = '\0';
+
+    return true;
+}
+
+bool
+sc_strbuf_append_char(struct sc_strbuf *buf, const char c) {
+    if (!sc_strbuf_reserve(buf, 1)) {
+        return false;
+    }
+
+    buf->s[buf->len] = c;
+    buf->len ++;
+    buf->s[buf->len] = '\0';
+
+    return true;
+}
+
+bool
+sc_strbuf_append_n(struct sc_strbuf *buf, const char c, size_t n) {
+    if (!sc_strbuf_reserve(buf, n)) {
+        return false;
+    }
+
+    memset(&buf->s[buf->len], c, n);
+    buf->len += n;
+    buf->s[buf->len] = '\0';
+
+    return true;
+}
+
+void
+sc_strbuf_shrink(struct sc_strbuf *buf) {
+    assert(buf->len <= buf->cap);
+    if (buf->len != buf->cap) {
+        char *s = realloc(buf->s, buf->len + 1); // +1 for '\0'
+        assert(s); // decreasing the size may not fail
+        buf->s = s;
+        buf->cap = buf->len;
+    }
+}

app/src/util/strbuf.h

@@ -0,0 +1,73 @@
+#ifndef SC_STRBUF_H
+#define SC_STRBUF_H
+
+#include "common.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
+struct sc_strbuf {
+    char *s;
+    size_t len;
+    size_t cap;
+};
+
+/**
+ * Initialize the string buffer
+ *
+ * `buf->s` must be manually freed by the caller.
+ */
+bool
+sc_strbuf_init(struct sc_strbuf *buf, size_t init_cap);
+
+/**
+ * Append a string
+ *
+ * Append `len` characters from `s` to the buffer.
+ */
+bool
+sc_strbuf_append(struct sc_strbuf *buf, const char *s, size_t len);
+
+/**
+ * Append a char
+ *
+ * Append a single character to the buffer.
+ */
+bool
+sc_strbuf_append_char(struct sc_strbuf *buf, const char c);
+
+/**
+ * Append a char `n` times
+ *
+ * Append the same characters `n` times to the buffer.
+ */
+bool
+sc_strbuf_append_n(struct sc_strbuf *buf, const char c, size_t n);
+
+/**
+ * Append a NUL-terminated string
+ */
+static inline bool
+sc_strbuf_append_str(struct sc_strbuf *buf, const char *s) {
+    return sc_strbuf_append(buf, s, strlen(s));
+}
+
+/**
+ * Append a static string
+ *
+ * Append a string whose size is known at compile time (for
+ * example a string literal).
+ */
+#define sc_strbuf_append_staticstr(BUF, S) \
+    sc_strbuf_append(BUF, S, sizeof(S) - 1)
+
+/**
+ * Shrink the buffer capacity to its current length
+ *
+ * This resizes `buf->s` to fit the content.
+ */
+void
+sc_strbuf_shrink(struct sc_strbuf *buf);
+
+#endif

app/src/util/term.c

@@ -0,0 +1,51 @@
+#include "term.h"
+
+#include <assert.h>
+
+#ifdef _WIN32
+# include <windows.h>
+#else
+# include <unistd.h>
+# include <sys/ioctl.h>
+#endif
+
+bool
+sc_term_get_size(unsigned *rows, unsigned *cols) {
+#ifdef _WIN32
+    CONSOLE_SCREEN_BUFFER_INFO csbi;
+
+    bool ok =
+        GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
+    if (!ok) {
+        return false;
+    }
+
+    if (rows) {
+        assert(csbi.srWindow.Bottom >= csbi.srWindow.Top);
+        *rows = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
+    }
+
+    if (cols) {
+        assert(csbi.srWindow.Right >= csbi.srWindow.Left);
+        *cols = csbi.srWindow.Right - csbi.srWindow.Left + 1;
+    }
+
+    return true;
+#else
+    struct winsize ws;
+    int r = ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws);
+    if (r == -1) {
+        return false;
+    }
+
+    if (rows) {
+        *rows = ws.ws_row;
+    }
+
+    if (cols) {
+        *cols = ws.ws_col;
+    }
+
+    return true;
+#endif
+}

app/src/util/term.h

@@ -0,0 +1,21 @@
+#ifndef SC_TERM_H
+#define SC_TERM_H
+
+#include "common.h"
+
+#include <stdbool.h>
+
+/**
+ * Return the terminal dimensions
+ *
+ * Return false if the dimensions could not be retrieved.
+ *
+ * Otherwise, return true, and:
+ *  - if `rows` is not NULL, then the number of rows is written to `*rows`.
+ *  - if `columns` is not NULL, then the number of columns is written to
+ *    `*columns`.
+ */
+bool
+sc_term_get_size(unsigned *rows, unsigned *cols);
+
+#endif

app/src/v4l2_sink.c

@@ -1,7 +1,7 @@
 #include "v4l2_sink.h"
 
 #include "util/log.h"
-#include "util/str_util.h"
+#include "util/str.h"
 
 /** Downcast frame_sink to sc_v4l2_sink */
 #define DOWNCAST(SINK) container_of(SINK, struct sc_v4l2_sink, frame_sink)
@@ -21,7 +21,7 @@ find_muxer(const char *name) {
         oformat = av_oformat_next(oformat);
 #endif
         // until null or containing the requested name
-    } while (oformat && !strlist_contains(oformat->name, ',', name));
+    } while (oformat && !sc_str_list_contains(oformat->name, ',', name));
     return oformat;
 }
 

app/tests/test_str.c

@@ -0,0 +1,387 @@
+#include "common.h"
+
+#include <assert.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "util/str.h"
+
+static void test_strncpy_simple(void) {
+    char s[] = "xxxxxxxxxx";
+    size_t w = sc_strncpy(s, "abcdef", sizeof(s));
+
+    // returns strlen of copied string
+    assert(w == 6);
+
+    // is nul-terminated
+    assert(s[6] == '\0');
+
+    // does not write useless bytes
+    assert(s[7] == 'x');
+
+    // copies the content as expected
+    assert(!strcmp("abcdef", s));
+}
+
+static void test_strncpy_just_fit(void) {
+    char s[] = "xxxxxx";
+    size_t w = sc_strncpy(s, "abcdef", sizeof(s));
+
+    // returns strlen of copied string
+    assert(w == 6);
+
+    // is nul-terminated
+    assert(s[6] == '\0');
+
+    // copies the content as expected
+    assert(!strcmp("abcdef", s));
+}
+
+static void test_strncpy_truncated(void) {
+    char s[] = "xxx";
+    size_t w = sc_strncpy(s, "abcdef", sizeof(s));
+
+    // returns 'n' (sizeof(s))
+    assert(w == 4);
+
+    // is nul-terminated
+    assert(s[3] == '\0');
+
+    // copies the content as expected
+    assert(!strncmp("abcdef", s, 3));
+}
+
+static void test_join_simple(void) {
+    const char *const tokens[] = { "abc", "de", "fghi", NULL };
+    char s[] = "xxxxxxxxxxxxxx";
+    size_t w = sc_str_join(s, tokens, ' ', sizeof(s));
+
+    // returns strlen of concatenation
+    assert(w == 11);
+
+    // is nul-terminated
+    assert(s[11] == '\0');
+
+    // does not write useless bytes
+    assert(s[12] == 'x');
+
+    // copies the content as expected
+    assert(!strcmp("abc de fghi", s));
+}
+
+static void test_join_just_fit(void) {
+    const char *const tokens[] = { "abc", "de", "fghi", NULL };
+    char s[] = "xxxxxxxxxxx";
+    size_t w = sc_str_join(s, tokens, ' ', sizeof(s));
+
+    // returns strlen of concatenation
+    assert(w == 11);
+
+    // is nul-terminated
+    assert(s[11] == '\0');
+
+    // copies the content as expected
+    assert(!strcmp("abc de fghi", s));
+}
+
+static void test_join_truncated_in_token(void) {
+    const char *const tokens[] = { "abc", "de", "fghi", NULL };
+    char s[] = "xxxxx";
+    size_t w = sc_str_join(s, tokens, ' ', sizeof(s));
+
+    // returns 'n' (sizeof(s))
+    assert(w == 6);
+
+    // is nul-terminated
+    assert(s[5] == '\0');
+
+    // copies the content as expected
+    assert(!strcmp("abc d", s));
+}
+
+static void test_join_truncated_before_sep(void) {
+    const char *const tokens[] = { "abc", "de", "fghi", NULL };
+    char s[] = "xxxxxx";
+    size_t w = sc_str_join(s, tokens, ' ', sizeof(s));
+
+    // returns 'n' (sizeof(s))
+    assert(w == 7);
+
+    // is nul-terminated
+    assert(s[6] == '\0');
+
+    // copies the content as expected
+    assert(!strcmp("abc de", s));
+}
+
+static void test_join_truncated_after_sep(void) {
+    const char *const tokens[] = { "abc", "de", "fghi", NULL };
+    char s[] = "xxxxxxx";
+    size_t w = sc_str_join(s, tokens, ' ', sizeof(s));
+
+    // returns 'n' (sizeof(s))
+    assert(w == 8);
+
+    // is nul-terminated
+    assert(s[7] == '\0');
+
+    // copies the content as expected
+    assert(!strcmp("abc de ", s));
+}
+
+static void test_quote(void) {
+    const char *s = "abcde";
+    char *out = sc_str_quote(s);
+
+    // add '"' at the beginning and the end
+    assert(!strcmp("\"abcde\"", out));
+
+    free(out);
+}
+
+static void test_utf8_truncate(void) {
+    const char *s = "aÉbÔc";
+    assert(strlen(s) == 7); // É and Ô are 2 bytes-wide
+
+    size_t count;
+
+    count = sc_str_utf8_truncation_index(s, 1);
+    assert(count == 1);
+
+    count = sc_str_utf8_truncation_index(s, 2);
+    assert(count == 1); // É is 2 bytes-wide
+
+    count = sc_str_utf8_truncation_index(s, 3);
+    assert(count == 3);
+
+    count = sc_str_utf8_truncation_index(s, 4);
+    assert(count == 4);
+
+    count = sc_str_utf8_truncation_index(s, 5);
+    assert(count == 4); // Ô is 2 bytes-wide
+
+    count = sc_str_utf8_truncation_index(s, 6);
+    assert(count == 6);
+
+    count = sc_str_utf8_truncation_index(s, 7);
+    assert(count == 7);
+
+    count = sc_str_utf8_truncation_index(s, 8);
+    assert(count == 7); // no more chars
+}
+
+static void test_parse_integer(void) {
+    long value;
+    bool ok = sc_str_parse_integer("1234", &value);
+    assert(ok);
+    assert(value == 1234);
+
+    ok = sc_str_parse_integer("-1234", &value);
+    assert(ok);
+    assert(value == -1234);
+
+    ok = sc_str_parse_integer("1234k", &value);
+    assert(!ok);
+
+    ok = sc_str_parse_integer("123456789876543212345678987654321", &value);
+    assert(!ok); // out-of-range
+}
+
+static void test_parse_integers(void) {
+    long values[5];
+
+    size_t count = sc_str_parse_integers("1234", ':', 5, values);
+    assert(count == 1);
+    assert(values[0] == 1234);
+
+    count = sc_str_parse_integers("1234:5678", ':', 5, values);
+    assert(count == 2);
+    assert(values[0] == 1234);
+    assert(values[1] == 5678);
+
+    count = sc_str_parse_integers("1234:5678", ':', 2, values);
+    assert(count == 2);
+    assert(values[0] == 1234);
+    assert(values[1] == 5678);
+
+    count = sc_str_parse_integers("1234:-5678", ':', 2, values);
+    assert(count == 2);
+    assert(values[0] == 1234);
+    assert(values[1] == -5678);
+
+    count = sc_str_parse_integers("1:2:3:4:5", ':', 5, values);
+    assert(count == 5);
+    assert(values[0] == 1);
+    assert(values[1] == 2);
+    assert(values[2] == 3);
+    assert(values[3] == 4);
+    assert(values[4] == 5);
+
+    count = sc_str_parse_integers("1234:5678", ':', 1, values);
+    assert(count == 0); // max_items == 1
+
+    count = sc_str_parse_integers("1:2:3:4:5", ':', 3, values);
+    assert(count == 0); // max_items == 3
+
+    count = sc_str_parse_integers(":1234", ':', 5, values);
+    assert(count == 0); // invalid
+
+    count = sc_str_parse_integers("1234:", ':', 5, values);
+    assert(count == 0); // invalid
+
+    count = sc_str_parse_integers("1234:", ':', 1, values);
+    assert(count == 0); // invalid, even when max_items == 1
+
+    count = sc_str_parse_integers("1234::5678", ':', 5, values);
+    assert(count == 0); // invalid
+}
+
+static void test_parse_integer_with_suffix(void) {
+    long value;
+    bool ok = sc_str_parse_integer_with_suffix("1234", &value);
+    assert(ok);
+    assert(value == 1234);
+
+    ok = sc_str_parse_integer_with_suffix("-1234", &value);
+    assert(ok);
+    assert(value == -1234);
+
+    ok = sc_str_parse_integer_with_suffix("1234k", &value);
+    assert(ok);
+    assert(value == 1234000);
+
+    ok = sc_str_parse_integer_with_suffix("1234m", &value);
+    assert(ok);
+    assert(value == 1234000000);
+
+    ok = sc_str_parse_integer_with_suffix("-1234k", &value);
+    assert(ok);
+    assert(value == -1234000);
+
+    ok = sc_str_parse_integer_with_suffix("-1234m", &value);
+    assert(ok);
+    assert(value == -1234000000);
+
+    ok = sc_str_parse_integer_with_suffix("123456789876543212345678987654321", &value);
+    assert(!ok); // out-of-range
+
+    char buf[32];
+
+    sprintf(buf, "%ldk", LONG_MAX / 2000);
+    ok = sc_str_parse_integer_with_suffix(buf, &value);
+    assert(ok);
+    assert(value == LONG_MAX / 2000 * 1000);
+
+    sprintf(buf, "%ldm", LONG_MAX / 2000);
+    ok = sc_str_parse_integer_with_suffix(buf, &value);
+    assert(!ok);
+
+    sprintf(buf, "%ldk", LONG_MIN / 2000);
+    ok = sc_str_parse_integer_with_suffix(buf, &value);
+    assert(ok);
+    assert(value == LONG_MIN / 2000 * 1000);
+
+    sprintf(buf, "%ldm", LONG_MIN / 2000);
+    ok = sc_str_parse_integer_with_suffix(buf, &value);
+    assert(!ok);
+}
+
+static void test_strlist_contains(void) {
+    assert(sc_str_list_contains("a,bc,def", ',', "bc"));
+    assert(!sc_str_list_contains("a,bc,def", ',', "b"));
+    assert(sc_str_list_contains("", ',', ""));
+    assert(sc_str_list_contains("abc,", ',', ""));
+    assert(sc_str_list_contains(",abc", ',', ""));
+    assert(sc_str_list_contains("abc,,def", ',', ""));
+    assert(!sc_str_list_contains("abc", ',', ""));
+    assert(sc_str_list_contains(",,|x", '|', ",,"));
+    assert(sc_str_list_contains("xyz", '\0', "xyz"));
+}
+
+static void test_wrap_lines(void) {
+    const char *s = "This is a text to test line wrapping. The lines must be "
+                    "wrapped at a space or a line break.\n"
+                    "\n"
+                    "This rectangle must remains a rectangle because it is "
+                    "drawn in lines having lengths lower than the specified "
+                    "number of columns:\n"
+                    "  +----+\n"
+                    "  |    |\n"
+                    "  +----+\n";
+
+    //                     |----      1    1    2  2|
+    //                     |0    5    0    5    0  3| <-- 24 columns
+    const char *expected = "    This is a text to\n"
+                           "    test line wrapping.\n"
+                           "    The lines must be\n"
+                           "    wrapped at a space\n"
+                           "    or a line break.\n"
+                           "    \n"
+                           "    This rectangle must\n"
+                           "    remains a rectangle\n"
+                           "    because it is drawn\n"
+                           "    in lines having\n"
+                           "    lengths lower than\n"
+                           "    the specified number\n"
+                           "    of columns:\n"
+                           "      +----+\n"
+                           "      |    |\n"
+                           "      +----+\n";
+
+    char *formatted = sc_str_wrap_lines(s, 24, 4);
+    assert(formatted);
+
+    assert(!strcmp(formatted, expected));
+
+    free(formatted);
+}
+
+static void test_truncate(void) {
+    char s[] = "hello\nworld\n!";
+    size_t len = sc_str_truncate(s, sizeof(s), "\n");
+
+    assert(len == 5);
+    assert(!strcmp("hello", s));
+
+    char s2[] = "hello\r\nworkd\r\n!";
+    len = sc_str_truncate(s2, sizeof(s2), "\n\r");
+
+    assert(len == 5);
+    assert(!strcmp("hello", s));
+
+    char s3[] = "hello world\n!";
+    len = sc_str_truncate(s3, sizeof(s3), " \n\r");
+
+    assert(len == 5);
+    assert(!strcmp("hello", s3));
+
+    char s4[] = "hello ";
+    len = sc_str_truncate(s4, sizeof(s4), " \n\r");
+
+    assert(len == 5);
+    assert(!strcmp("hello", s4));
+}
+
+int main(int argc, char *argv[]) {
+    (void) argc;
+    (void) argv;
+
+    test_strncpy_simple();
+    test_strncpy_just_fit();
+    test_strncpy_truncated();
+    test_join_simple();
+    test_join_just_fit();
+    test_join_truncated_in_token();
+    test_join_truncated_before_sep();
+    test_join_truncated_after_sep();
+    test_quote();
+    test_utf8_truncate();
+    test_parse_integer();
+    test_parse_integers();
+    test_parse_integer_with_suffix();
+    test_strlist_contains();
+    test_wrap_lines();
+    test_truncate();
+    return 0;
+}

app/tests/test_strbuf.c

@@ -0,0 +1,47 @@
+#include "common.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "util/strbuf.h"
+
+static void test_strbuf_simple(void) {
+    struct sc_strbuf buf;
+    bool ok = sc_strbuf_init(&buf, 10);
+    assert(ok);
+
+    ok = sc_strbuf_append_staticstr(&buf, "Hello");
+    assert(ok);
+
+    ok = sc_strbuf_append_char(&buf, ' ');
+    assert(ok);
+
+    ok = sc_strbuf_append_staticstr(&buf, "world");
+    assert(ok);
+
+    ok = sc_strbuf_append_staticstr(&buf, "!\n");
+    assert(ok);
+
+    ok = sc_strbuf_append_staticstr(&buf, "This is a test");
+    assert(ok);
+
+    ok = sc_strbuf_append_n(&buf, '.', 3);
+    assert(ok);
+
+    assert(!strcmp(buf.s, "Hello world!\nThis is a test..."));
+
+    sc_strbuf_shrink(&buf);
+    assert(buf.len == buf.cap);
+    assert(!strcmp(buf.s, "Hello world!\nThis is a test..."));
+
+    free(buf.s);
+}
+
+int main(int argc, char *argv[]) {
+    (void) argc;
+    (void) argv;
+
+    test_strbuf_simple();
+    return 0;
+}

app/tests/test_strutil.c

@@ -1,321 +0,0 @@
-#include "common.h"
-
-#include <assert.h>
-#include <limits.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "util/str_util.h"
-
-static void test_xstrncpy_simple(void) {
-    char s[] = "xxxxxxxxxx";
-    size_t w = xstrncpy(s, "abcdef", sizeof(s));
-
-    // returns strlen of copied string
-    assert(w == 6);
-
-    // is nul-terminated
-    assert(s[6] == '\0');
-
-    // does not write useless bytes
-    assert(s[7] == 'x');
-
-    // copies the content as expected
-    assert(!strcmp("abcdef", s));
-}
-
-static void test_xstrncpy_just_fit(void) {
-    char s[] = "xxxxxx";
-    size_t w = xstrncpy(s, "abcdef", sizeof(s));
-
-    // returns strlen of copied string
-    assert(w == 6);
-
-    // is nul-terminated
-    assert(s[6] == '\0');
-
-    // copies the content as expected
-    assert(!strcmp("abcdef", s));
-}
-
-static void test_xstrncpy_truncated(void) {
-    char s[] = "xxx";
-    size_t w = xstrncpy(s, "abcdef", sizeof(s));
-
-    // returns 'n' (sizeof(s))
-    assert(w == 4);
-
-    // is nul-terminated
-    assert(s[3] == '\0');
-
-    // copies the content as expected
-    assert(!strncmp("abcdef", s, 3));
-}
-
-static void test_xstrjoin_simple(void) {
-    const char *const tokens[] = { "abc", "de", "fghi", NULL };
-    char s[] = "xxxxxxxxxxxxxx";
-    size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
-
-    // returns strlen of concatenation
-    assert(w == 11);
-
-    // is nul-terminated
-    assert(s[11] == '\0');
-
-    // does not write useless bytes
-    assert(s[12] == 'x');
-
-    // copies the content as expected
-    assert(!strcmp("abc de fghi", s));
-}
-
-static void test_xstrjoin_just_fit(void) {
-    const char *const tokens[] = { "abc", "de", "fghi", NULL };
-    char s[] = "xxxxxxxxxxx";
-    size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
-
-    // returns strlen of concatenation
-    assert(w == 11);
-
-    // is nul-terminated
-    assert(s[11] == '\0');
-
-    // copies the content as expected
-    assert(!strcmp("abc de fghi", s));
-}
-
-static void test_xstrjoin_truncated_in_token(void) {
-    const char *const tokens[] = { "abc", "de", "fghi", NULL };
-    char s[] = "xxxxx";
-    size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
-
-    // returns 'n' (sizeof(s))
-    assert(w == 6);
-
-    // is nul-terminated
-    assert(s[5] == '\0');
-
-    // copies the content as expected
-    assert(!strcmp("abc d", s));
-}
-
-static void test_xstrjoin_truncated_before_sep(void) {
-    const char *const tokens[] = { "abc", "de", "fghi", NULL };
-    char s[] = "xxxxxx";
-    size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
-
-    // returns 'n' (sizeof(s))
-    assert(w == 7);
-
-    // is nul-terminated
-    assert(s[6] == '\0');
-
-    // copies the content as expected
-    assert(!strcmp("abc de", s));
-}
-
-static void test_xstrjoin_truncated_after_sep(void) {
-    const char *const tokens[] = { "abc", "de", "fghi", NULL };
-    char s[] = "xxxxxxx";
-    size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
-
-    // returns 'n' (sizeof(s))
-    assert(w == 8);
-
-    // is nul-terminated
-    assert(s[7] == '\0');
-
-    // copies the content as expected
-    assert(!strcmp("abc de ", s));
-}
-
-static void test_strquote(void) {
-    const char *s = "abcde";
-    char *out = strquote(s);
-
-    // add '"' at the beginning and the end
-    assert(!strcmp("\"abcde\"", out));
-
-    free(out);
-}
-
-static void test_utf8_truncate(void) {
-    const char *s = "aÉbÔc";
-    assert(strlen(s) == 7); // É and Ô are 2 bytes-wide
-
-    size_t count;
-
-    count = utf8_truncation_index(s, 1);
-    assert(count == 1);
-
-    count = utf8_truncation_index(s, 2);
-    assert(count == 1); // É is 2 bytes-wide
-
-    count = utf8_truncation_index(s, 3);
-    assert(count == 3);
-
-    count = utf8_truncation_index(s, 4);
-    assert(count == 4);
-
-    count = utf8_truncation_index(s, 5);
-    assert(count == 4); // Ô is 2 bytes-wide
-
-    count = utf8_truncation_index(s, 6);
-    assert(count == 6);
-
-    count = utf8_truncation_index(s, 7);
-    assert(count == 7);
-
-    count = utf8_truncation_index(s, 8);
-    assert(count == 7); // no more chars
-}
-
-static void test_parse_integer(void) {
-    long value;
-    bool ok = parse_integer("1234", &value);
-    assert(ok);
-    assert(value == 1234);
-
-    ok = parse_integer("-1234", &value);
-    assert(ok);
-    assert(value == -1234);
-
-    ok = parse_integer("1234k", &value);
-    assert(!ok);
-
-    ok = parse_integer("123456789876543212345678987654321", &value);
-    assert(!ok); // out-of-range
-}
-
-static void test_parse_integers(void) {
-    long values[5];
-
-    size_t count = parse_integers("1234", ':', 5, values);
-    assert(count == 1);
-    assert(values[0] == 1234);
-
-    count = parse_integers("1234:5678", ':', 5, values);
-    assert(count == 2);
-    assert(values[0] == 1234);
-    assert(values[1] == 5678);
-
-    count = parse_integers("1234:5678", ':', 2, values);
-    assert(count == 2);
-    assert(values[0] == 1234);
-    assert(values[1] == 5678);
-
-    count = parse_integers("1234:-5678", ':', 2, values);
-    assert(count == 2);
-    assert(values[0] == 1234);
-    assert(values[1] == -5678);
-
-    count = parse_integers("1:2:3:4:5", ':', 5, values);
-    assert(count == 5);
-    assert(values[0] == 1);
-    assert(values[1] == 2);
-    assert(values[2] == 3);
-    assert(values[3] == 4);
-    assert(values[4] == 5);
-
-    count = parse_integers("1234:5678", ':', 1, values);
-    assert(count == 0); // max_items == 1
-
-    count = parse_integers("1:2:3:4:5", ':', 3, values);
-    assert(count == 0); // max_items == 3
-
-    count = parse_integers(":1234", ':', 5, values);
-    assert(count == 0); // invalid
-
-    count = parse_integers("1234:", ':', 5, values);
-    assert(count == 0); // invalid
-
-    count = parse_integers("1234:", ':', 1, values);
-    assert(count == 0); // invalid, even when max_items == 1
-
-    count = parse_integers("1234::5678", ':', 5, values);
-    assert(count == 0); // invalid
-}
-
-static void test_parse_integer_with_suffix(void) {
-    long value;
-    bool ok = parse_integer_with_suffix("1234", &value);
-    assert(ok);
-    assert(value == 1234);
-
-    ok = parse_integer_with_suffix("-1234", &value);
-    assert(ok);
-    assert(value == -1234);
-
-    ok = parse_integer_with_suffix("1234k", &value);
-    assert(ok);
-    assert(value == 1234000);
-
-    ok = parse_integer_with_suffix("1234m", &value);
-    assert(ok);
-    assert(value == 1234000000);
-
-    ok = parse_integer_with_suffix("-1234k", &value);
-    assert(ok);
-    assert(value == -1234000);
-
-    ok = parse_integer_with_suffix("-1234m", &value);
-    assert(ok);
-    assert(value == -1234000000);
-
-    ok = parse_integer_with_suffix("123456789876543212345678987654321", &value);
-    assert(!ok); // out-of-range
-
-    char buf[32];
-
-    sprintf(buf, "%ldk", LONG_MAX / 2000);
-    ok = parse_integer_with_suffix(buf, &value);
-    assert(ok);
-    assert(value == LONG_MAX / 2000 * 1000);
-
-    sprintf(buf, "%ldm", LONG_MAX / 2000);
-    ok = parse_integer_with_suffix(buf, &value);
-    assert(!ok);
-
-    sprintf(buf, "%ldk", LONG_MIN / 2000);
-    ok = parse_integer_with_suffix(buf, &value);
-    assert(ok);
-    assert(value == LONG_MIN / 2000 * 1000);
-
-    sprintf(buf, "%ldm", LONG_MIN / 2000);
-    ok = parse_integer_with_suffix(buf, &value);
-    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;
-
-    test_xstrncpy_simple();
-    test_xstrncpy_just_fit();
-    test_xstrncpy_truncated();
-    test_xstrjoin_simple();
-    test_xstrjoin_just_fit();
-    test_xstrjoin_truncated_in_token();
-    test_xstrjoin_truncated_before_sep();
-    test_xstrjoin_truncated_after_sep();
-    test_strquote();
-    test_utf8_truncate();
-    test_parse_integer();
-    test_parse_integers();
-    test_parse_integer_with_suffix();
-    test_strlist_contains();
-    return 0;
-}

install_release.sh

@@ -2,8 +2,8 @@
 set -e
 
 BUILDDIR=build-auto
-PREBUILT_SERVER_URL=https://github.com/Genymobile/scrcpy/releases/download/v1.19/scrcpy-server-v1.19
-PREBUILT_SERVER_SHA256=876f9322182e6aac6a58db1334f4225855ef3a17eaebc80aab6601d9d1ecb867
+PREBUILT_SERVER_URL=https://github.com/Genymobile/scrcpy/releases/download/v1.20/scrcpy-server-v1.20
+PREBUILT_SERVER_SHA256=b20aee4951f99b060c4a44000ba94de973f9604758ef62beb253b371aad3df34
 
 echo "[scrcpy] Downloading prebuilt server..."
 wget "$PREBUILT_SERVER_URL" -O scrcpy-server

meson.build

@@ -1,5 +1,5 @@
 project('scrcpy', 'c',
-        version: '1.19',
+        version: '1.20',
         meson_version: '>= 0.48',
         default_options: [
             'c_std=c11',

server/build.gradle

@@ -6,8 +6,8 @@ android {
         applicationId "com.genymobile.scrcpy"
         minSdkVersion 21
         targetSdkVersion 31
-        versionCode 11900
-        versionName "1.19"
+        versionCode 12000
+        versionName "1.20"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
@@ -20,7 +20,7 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    testImplementation 'junit:junit:4.13'
+    testImplementation 'junit:junit:4.13.1'
 }
 
 apply from: "$project.rootDir/config/android-checkstyle.gradle"

server/build_without_gradle.sh

@@ -12,15 +12,17 @@
 set -e
 
 SCRCPY_DEBUG=false
-SCRCPY_VERSION_NAME=1.19
+SCRCPY_VERSION_NAME=1.20
 
-PLATFORM=${ANDROID_PLATFORM:-30}
-BUILD_TOOLS=${ANDROID_BUILD_TOOLS:-30.0.0}
+PLATFORM_VERSION=31
+PLATFORM=${ANDROID_PLATFORM:-$PLATFORM_VERSION}
+BUILD_TOOLS=${ANDROID_BUILD_TOOLS:-31.0.0}
 
 BUILD_DIR="$(realpath ${BUILD_DIR:-build_manual})"
 CLASSES_DIR="$BUILD_DIR/classes"
 SERVER_DIR=$(dirname "$0")
 SERVER_BINARY=scrcpy-server
+ANDROID_JAR="$ANDROID_HOME/platforms/android-$PLATFORM/android.jar"
 
 echo "Platform: android-$PLATFORM"
 echo "Build-tools: $BUILD_TOOLS"
@@ -47,13 +49,17 @@ cd "$SERVER_DIR/src/main/aidl"
 
 echo "Compiling java sources..."
 cd ../java
-javac -bootclasspath "$ANDROID_HOME/platforms/android-$PLATFORM/android.jar" \
-    -cp "$CLASSES_DIR" -d "$CLASSES_DIR" -source 1.8 -target 1.8 \
+javac -bootclasspath "$ANDROID_JAR" -cp "$CLASSES_DIR" -d "$CLASSES_DIR" \
+    -source 1.8 -target 1.8 \
     com/genymobile/scrcpy/*.java \
     com/genymobile/scrcpy/wrappers/*.java
 
 echo "Dexing..."
 cd "$CLASSES_DIR"
+
+if [[ $PLATFORM_VERSION -lt 31 ]]
+then
+    # use dx
     "$ANDROID_HOME/build-tools/$BUILD_TOOLS/dx" --dex \
         --output "$BUILD_DIR/classes.dex" \
         android/view/*.class \
@@ -65,5 +71,18 @@ echo "Archiving..."
     cd "$BUILD_DIR"
     jar cvf "$SERVER_BINARY" classes.dex
     rm -rf classes.dex classes
+else
+    # use d8
+    "$ANDROID_HOME/build-tools/$BUILD_TOOLS/d8" --classpath "$ANDROID_JAR" \
+        --output "$BUILD_DIR/classes.zip" \
+        android/view/*.class \
+        android/content/*.class \
+        com/genymobile/scrcpy/*.class \
+        com/genymobile/scrcpy/wrappers/*.class
+
+    cd "$BUILD_DIR"
+    mv classes.zip "$SERVER_BINARY"
+    rm -rf classes
+fi
 
 echo "Server generated in $BUILD_DIR/$SERVER_BINARY"

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

@@ -1,6 +1,5 @@
 package com.genymobile.scrcpy;
 
-import com.genymobile.scrcpy.wrappers.ContentProvider;
 import com.genymobile.scrcpy.wrappers.ServiceManager;
 
 import android.os.Parcel;
@@ -166,14 +165,21 @@ public final class CleanUp {
 
         if (config.disableShowTouches || config.restoreStayOn != -1) {
             ServiceManager serviceManager = new ServiceManager();
-            try (ContentProvider settings = serviceManager.getActivityManager().createSettingsProvider()) {
+            Settings settings = new Settings(serviceManager);
             if (config.disableShowTouches) {
                 Ln.i("Disabling \"show touches\"");
-                    settings.putValue(ContentProvider.TABLE_SYSTEM, "show_touches", "0");
+                try {
+                    settings.putValue(Settings.TABLE_SYSTEM, "show_touches", "0");
+                } catch (SettingsException e) {
+                    Ln.e("Could not restore \"show_touches\"", e);
+                }
             }
             if (config.restoreStayOn != -1) {
                 Ln.i("Restoring \"stay awake\"");
-                    settings.putValue(ContentProvider.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(config.restoreStayOn));
+                try {
+                    settings.putValue(Settings.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(config.restoreStayOn));
+                } catch (SettingsException e) {
+                    Ln.e("Could not restore \"stay_on_while_plugged_in\"", e);
                 }
             }
         }

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

@@ -0,0 +1,33 @@
+package com.genymobile.scrcpy;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Scanner;
+
+public final class Command {
+    private Command() {
+        // not instantiable
+    }
+
+    public static void exec(String... cmd) throws IOException, InterruptedException {
+        Process process = Runtime.getRuntime().exec(cmd);
+        int exitCode = process.waitFor();
+        if (exitCode != 0) {
+            throw new IOException("Command " + Arrays.toString(cmd) + " returned with value " + exitCode);
+        }
+    }
+
+    public static String execReadLine(String... cmd) throws IOException, InterruptedException {
+        String result = null;
+        Process process = Runtime.getRuntime().exec(cmd);
+        Scanner scanner = new Scanner(process.getInputStream());
+        if (scanner.hasNextLine()) {
+            result = scanner.nextLine();
+        }
+        int exitCode = process.waitFor();
+        if (exitCode != 0) {
+            throw new IOException("Command " + Arrays.toString(cmd) + " returned with value " + exitCode);
+        }
+        return result;
+    }
+}

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

@@ -1,7 +1,6 @@
 package com.genymobile.scrcpy;
 
 import com.genymobile.scrcpy.wrappers.ClipboardManager;
-import com.genymobile.scrcpy.wrappers.ContentProvider;
 import com.genymobile.scrcpy.wrappers.InputManager;
 import com.genymobile.scrcpy.wrappers.ServiceManager;
 import com.genymobile.scrcpy.wrappers.SurfaceControl;
@@ -29,6 +28,7 @@ public final class Device {
     public static final int LOCK_VIDEO_ORIENTATION_INITIAL = -2;
 
     private static final ServiceManager SERVICE_MANAGER = new ServiceManager();
+    private static final Settings SETTINGS = new Settings(SERVICE_MANAGER);
 
     public interface RotationListener {
         void onRotationChanged(int rotation);
@@ -296,7 +296,7 @@ public final class Device {
         }
     }
 
-    public static ContentProvider createSettingsProvider() {
-        return SERVICE_MANAGER.getActivityManager().createSettingsProvider();
+    public static Settings getSettings() {
+        return SETTINGS;
     }
 }

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

@@ -57,12 +57,19 @@ public final class Ln {
         }
     }
 
-    public static void w(String message) {
+    public static void w(String message, Throwable throwable) {
         if (isEnabled(Level.WARN)) {
-            Log.w(TAG, message);
+            Log.w(TAG, message, throwable);
             System.out.println(PREFIX + "WARN: " + message);
+            if (throwable != null) {
+                throwable.printStackTrace();
             }
         }
+    }
+
+    public static void w(String message) {
+        w(message, null);
+    }
 
     public static void e(String message, Throwable throwable) {
         if (isEnabled(Level.ERROR)) {

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

@@ -1,7 +1,5 @@
 package com.genymobile.scrcpy;
 
-import com.genymobile.scrcpy.wrappers.ContentProvider;
-
 import android.graphics.Rect;
 import android.media.MediaCodec;
 import android.media.MediaCodecInfo;
@@ -19,24 +17,25 @@ public final class Server {
         // not instantiable
     }
 
-    private static void scrcpy(Options options) throws IOException {
-        Ln.i("Device: " + Build.MANUFACTURER + " " + Build.MODEL + " (Android " + Build.VERSION.RELEASE + ")");
-        final Device device = new Device(options);
-        List<CodecOption> codecOptions = CodecOption.parse(options.getCodecOptions());
-
+    private static void initAndCleanUp(Options options) {
         boolean mustDisableShowTouchesOnCleanUp = false;
         int restoreStayOn = -1;
         if (options.getShowTouches() || options.getStayAwake()) {
-            try (ContentProvider settings = Device.createSettingsProvider()) {
+            Settings settings = Device.getSettings();
             if (options.getShowTouches()) {
-                    String oldValue = settings.getAndPutValue(ContentProvider.TABLE_SYSTEM, "show_touches", "1");
+                try {
+                    String oldValue = settings.getAndPutValue(Settings.TABLE_SYSTEM, "show_touches", "1");
                     // If "show touches" was disabled, it must be disabled back on clean up
                     mustDisableShowTouchesOnCleanUp = !"1".equals(oldValue);
+                } catch (SettingsException e) {
+                    Ln.e("Could not change \"show_touches\"", e);
+                }
             }
 
             if (options.getStayAwake()) {
                 int stayOn = BatteryManager.BATTERY_PLUGGED_AC | BatteryManager.BATTERY_PLUGGED_USB | BatteryManager.BATTERY_PLUGGED_WIRELESS;
-                    String oldValue = settings.getAndPutValue(ContentProvider.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(stayOn));
+                try {
+                    String oldValue = settings.getAndPutValue(Settings.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(stayOn));
                     try {
                         restoreStayOn = Integer.parseInt(oldValue);
                         if (restoreStayOn == stayOn) {
@@ -46,11 +45,25 @@ public final class Server {
                     } catch (NumberFormatException e) {
                         restoreStayOn = 0;
                     }
+                } catch (SettingsException e) {
+                    Ln.e("Could not change \"stay_on_while_plugged_in\"", e);
                 }
             }
         }
 
+        try {
             CleanUp.configure(options.getDisplayId(), restoreStayOn, mustDisableShowTouchesOnCleanUp, true, options.getPowerOffScreenOnClose());
+        } catch (IOException e) {
+            Ln.e("Could not configure cleanup", e);
+        }
+    }
+
+    private static void scrcpy(Options options) throws IOException {
+        Ln.i("Device: " + Build.MANUFACTURER + " " + Build.MODEL + " (Android " + Build.VERSION.RELEASE + ")");
+        final Device device = new Device(options);
+        List<CodecOption> codecOptions = CodecOption.parse(options.getCodecOptions());
+
+        Thread initThread = startInitThread(options);
 
         boolean tunnelForward = options.isTunnelForward();
 
@@ -82,6 +95,7 @@ public final class Server {
                 // this is expected on close
                 Ln.d("Screen streaming stopped");
             } finally {
+                initThread.interrupt();
                 if (controllerThread != null) {
                     controllerThread.interrupt();
                 }
@@ -92,6 +106,17 @@ public final class Server {
         }
     }
 
+    private static Thread startInitThread(final Options options) {
+        Thread thread = new Thread(new Runnable() {
+            @Override
+            public void run() {
+                initAndCleanUp(options);
+            }
+        });
+        thread.start();
+        return thread;
+    }
+
     private static Thread startController(final Controller controller) {
         Thread thread = new Thread(new Runnable() {
             @Override

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

@@ -0,0 +1,84 @@
+package com.genymobile.scrcpy;
+
+import com.genymobile.scrcpy.wrappers.ContentProvider;
+import com.genymobile.scrcpy.wrappers.ServiceManager;
+
+import android.os.Build;
+
+import java.io.IOException;
+
+public class Settings {
+
+    public static final String TABLE_SYSTEM = ContentProvider.TABLE_SYSTEM;
+    public static final String TABLE_SECURE = ContentProvider.TABLE_SECURE;
+    public static final String TABLE_GLOBAL = ContentProvider.TABLE_GLOBAL;
+
+    private final ServiceManager serviceManager;
+
+    public Settings(ServiceManager serviceManager) {
+        this.serviceManager = serviceManager;
+    }
+
+    private static void execSettingsPut(String table, String key, String value) throws SettingsException {
+        try {
+            Command.exec("settings", "put", table, key, value);
+        } catch (IOException | InterruptedException e) {
+            throw new SettingsException("put", table, key, value, e);
+        }
+    }
+
+    private static String execSettingsGet(String table, String key) throws SettingsException {
+        try {
+            return Command.execReadLine("settings", "get", table, key);
+        } catch (IOException | InterruptedException e) {
+            throw new SettingsException("get", table, key, null, e);
+        }
+    }
+
+    public String getValue(String table, String key) throws SettingsException {
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
+            // on Android >= 12, it always fails: <https://github.com/Genymobile/scrcpy/issues/2788>
+            try (ContentProvider provider = serviceManager.getActivityManager().createSettingsProvider()) {
+                return provider.getValue(table, key);
+            } catch (SettingsException e) {
+                Ln.w("Could not get settings value via ContentProvider, fallback to settings process", e);
+            }
+        }
+
+        return execSettingsGet(table, key);
+    }
+
+    public void putValue(String table, String key, String value) throws SettingsException {
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
+            // on Android >= 12, it always fails: <https://github.com/Genymobile/scrcpy/issues/2788>
+            try (ContentProvider provider = serviceManager.getActivityManager().createSettingsProvider()) {
+                provider.putValue(table, key, value);
+            } catch (SettingsException e) {
+                Ln.w("Could not put settings value via ContentProvider, fallback to settings process", e);
+            }
+        }
+
+        execSettingsPut(table, key, value);
+    }
+
+    public String getAndPutValue(String table, String key, String value) throws SettingsException {
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
+            // on Android >= 12, it always fails: <https://github.com/Genymobile/scrcpy/issues/2788>
+            try (ContentProvider provider = serviceManager.getActivityManager().createSettingsProvider()) {
+                String oldValue = provider.getValue(table, key);
+                if (!value.equals(oldValue)) {
+                    provider.putValue(table, key, value);
+                }
+                return oldValue;
+            } catch (SettingsException e) {
+                Ln.w("Could not get and put settings value via ContentProvider, fallback to settings process", e);
+            }
+        }
+
+        String oldValue = getValue(table, key);
+        if (!value.equals(oldValue)) {
+             putValue(table, key, value);
+        }
+        return oldValue;
+    }
+}

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

@@ -0,0 +1,11 @@
+package com.genymobile.scrcpy;
+
+public class SettingsException extends Exception {
+    private static String createMessage(String method, String table, String key, String value) {
+        return "Could not access settings: " + method + " " + table + " " + key + (value != null ? " " + value : "");
+    }
+
+    public SettingsException(String method, String table, String key, String value, Throwable cause) {
+        super(createMessage(method, table, key, value), cause);
+    }
+}

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

@@ -1,6 +1,7 @@
 package com.genymobile.scrcpy.wrappers;
 
 import com.genymobile.scrcpy.Ln;
+import com.genymobile.scrcpy.SettingsException;
 
 import android.annotation.SuppressLint;
 import android.os.Bundle;
@@ -87,7 +88,8 @@ public class ContentProvider implements Closeable {
         return attributionSource;
     }
 
-    private Bundle call(String callMethod, String arg, Bundle extras) {
+    private Bundle call(String callMethod, String arg, Bundle extras)
+            throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {
         try {
             Method method = getCallMethod();
             Object[] args;
@@ -108,7 +110,7 @@ public class ContentProvider implements Closeable {
             return (Bundle) method.invoke(provider, args);
         } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException | ClassNotFoundException | InstantiationException e) {
             Ln.e("Could not invoke method", e);
-            return null;
+            throw e;
         }
     }
 
@@ -142,30 +144,31 @@ public class ContentProvider implements Closeable {
         }
     }
 
-    public String getValue(String table, String key) {
+    public String getValue(String table, String key) throws SettingsException {
         String method = getGetMethod(table);
         Bundle arg = new Bundle();
         arg.putInt(CALL_METHOD_USER_KEY, ServiceManager.USER_ID);
+        try {
             Bundle bundle = call(method, key, arg);
             if (bundle == null) {
                 return null;
             }
             return bundle.getString("value");
+        } catch (Exception e) {
+            throw new SettingsException(table, "get", key, null, e);
         }
 
-    public void putValue(String table, String key, String value) {
+    }
+
+    public void putValue(String table, String key, String value) throws SettingsException {
         String method = getPutMethod(table);
         Bundle arg = new Bundle();
         arg.putInt(CALL_METHOD_USER_KEY, ServiceManager.USER_ID);
         arg.putString(NAME_VALUE_TABLE_VALUE, value);
+        try {
             call(method, key, arg);
-    }
-
-    public String getAndPutValue(String table, String key, String value) {
-        String oldValue = getValue(table, key);
-        if (!value.equals(oldValue)) {
-            putValue(table, key, value);
-        }
-        return oldValue;
+        } catch (Exception e) {
+            throw new SettingsException(table, "put", key, value, e);
+        }
     }
 }