Create keep_screen_off command line option.

(still doesn't have docs for it)

app/src/cli.c

@@ -566,6 +566,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
         {"show-touches",           no_argument,       NULL, 't'},
         {"stay-awake",             no_argument,       NULL, 'w'},
         {"turn-screen-off",        no_argument,       NULL, 'S'},
+        {"keep-screen-off",        no_argument,       NULL, 'S'},
         {"verbosity",              required_argument, NULL, 'V'},
         {"version",                no_argument,       NULL, 'v'},
         {"window-title",           required_argument, NULL, OPT_WINDOW_TITLE},
@@ -649,6 +650,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
                 opts->serial = optarg;
                 break;
             case 'S':
+                opts->keep_screen_off = opts->turn_screen_off;
                 opts->turn_screen_off = true;
                 break;
             case 't':

app/src/scrcpy.c

@@ -311,6 +311,7 @@ scrcpy(const struct scrcpy_options *options) {
         .lock_video_orientation = options->lock_video_orientation,
         .control = options->control,
         .display_id = options->display_id,
+        .keep_screen_off = options->keep_screen_off,
         .show_touches = options->show_touches,
         .stay_awake = options->stay_awake,
         .codec_options = options->codec_options,

app/src/scrcpy.h

@@ -54,6 +54,7 @@ struct scrcpy_options {
     bool control;
     bool display;
     bool turn_screen_off;
+    bool keep_screen_off;
     bool render_expired_frames;
     bool prefer_text;
     bool window_borderless;
@@ -93,6 +94,7 @@ struct scrcpy_options {
     .control = true, \
     .display = true, \
     .turn_screen_off = false, \
+    .keep_screen_off = false, \
     .render_expired_frames = false, \
     .prefer_text = false, \
     .window_borderless = false, \

app/src/server.c

@@ -294,6 +294,7 @@ execute_server(struct server *server, const struct server_params *params) {
         params->show_touches ? "true" : "false",
         params->stay_awake ? "true" : "false",
         params->codec_options ? params->codec_options : "-",
+        params->keep_screen_off ? "true" : "false",
     };
 #ifdef SERVER_DEBUGGER
     LOGI("Server debugger waiting for a client on device port "

app/src/server.h

@@ -55,6 +55,7 @@ struct server_params {
     int8_t lock_video_orientation;
     bool control;
     uint16_t display_id;
+    bool keep_screen_off;
     bool show_touches;
     bool stay_awake;
     bool force_adb_forward;

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

@@ -28,13 +28,15 @@ public class Controller {
     private final MotionEvent.PointerProperties[] pointerProperties = new MotionEvent.PointerProperties[PointersState.MAX_POINTERS];
     private final MotionEvent.PointerCoords[] pointerCoords = new MotionEvent.PointerCoords[PointersState.MAX_POINTERS];
 
-    private final Timer keepScreenOffTimer = new Timer("KeepScreenOff", true);
+    private final Timer keepScreenOffTimer;
 
-    public Controller(Device device, DesktopConnection connection) {
+    public Controller(Device device, DesktopConnection connection, boolean keepScreenOff) {
         this.device = device;
         this.connection = connection;
         initPointers();
         sender = new DeviceMessageSender(connection);
+
+        keepScreenOffTimer = keepScreenOff ? new Timer("KeepScreenOff", true) : null;
     }
 
     private void initPointers() {
@@ -241,7 +243,7 @@ public class Controller {
      * Tested on a low end Android 6 device
      */
     public void scheduleScreenOff() {
-        if (screenStayOff) {
+        if (keepScreenOffTimer != null && screenStayOff) {
             keepScreenOffTimer.schedule(
                     new TimerTask() {
                         @Override

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

@@ -16,6 +16,7 @@ public class Options {
     private boolean showTouches;
     private boolean stayAwake;
     private String codecOptions;
+    private boolean keepScreenOff;
 
     public Ln.Level getLogLevel() {
         return logLevel;
@@ -120,4 +121,12 @@ public class Options {
     public void setCodecOptions(String codecOptions) {
         this.codecOptions = codecOptions;
     }
+
+    public boolean isKeepScreenOff() {
+        return keepScreenOff;
+    }
+
+    public void setKeepScreenOff(boolean keepScreenOff) {
+        this.keepScreenOff = keepScreenOff;
+    }
 }

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

@@ -57,7 +57,7 @@ public final class Server {
             ScreenEncoder screenEncoder = new ScreenEncoder(options.getSendFrameMeta(), options.getBitRate(), options.getMaxFps(), codecOptions);
 
             if (options.getControl()) {
-                final Controller controller = new Controller(device, connection);
+                final Controller controller = new Controller(device, connection, options.isKeepScreenOff());
 
                 // asynchronous
                 startController(controller);
@@ -120,7 +120,7 @@ public final class Server {
                     "The server version (" + BuildConfig.VERSION_NAME + ") does not match the client " + "(" + clientVersion + ")");
         }
 
-        final int expectedParameters = 14;
+        final int expectedParameters = 15;
         if (args.length != expectedParameters) {
             throw new IllegalArgumentException("Expecting " + expectedParameters + " parameters");
         }
@@ -167,6 +167,9 @@ public final class Server {
         String codecOptions = args[13];
         options.setCodecOptions(codecOptions);
 
+        boolean keepScreenOff = Boolean.parseBoolean(args[14]);
+        options.setKeepScreenOff(keepScreenOff);
+
         return options;
     }