Turn screen on on right-click

The right-click is almost useless on Android, so use it to turn the
screen on.

Add a new control event type (command) to request the server to turn the
screen on.

app/src/controlevent.c

@@ -52,6 +52,9 @@ int control_event_serialize(const struct control_event *event, unsigned char *bu
             write32(&buf[9], (Uint32) event->scroll_event.hscroll);
             write32(&buf[13], (Uint32) event->scroll_event.vscroll);
             return 17;
+        case CONTROL_EVENT_TYPE_COMMAND:
+            buf[1] = event->command_event.action;
+            return 2;
         default:
             SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, "Unknown event type: %u", (unsigned) event->type);
             return 0;

app/src/controlevent.h

@@ -17,8 +17,11 @@ enum control_event_type {
     CONTROL_EVENT_TYPE_TEXT,
     CONTROL_EVENT_TYPE_MOUSE,
     CONTROL_EVENT_TYPE_SCROLL,
+    CONTROL_EVENT_TYPE_COMMAND,
 };
 
+#define CONTROL_EVENT_COMMAND_SCREEN_ON 0
+
 struct control_event {
     enum control_event_type type;
     union {
@@ -40,6 +43,9 @@ struct control_event {
             Sint32 hscroll;
             Sint32 vscroll;
         } scroll_event;
+        struct {
+            int action;
+        } command_event;
     };
 };
 

app/src/scrcpy.c

@@ -293,6 +293,18 @@ static void send_keycode(enum android_keycode keycode, const char *name) {
     }
 }
 
+static void turn_screen_on(void) {
+    struct control_event control_event = {
+        .type = CONTROL_EVENT_TYPE_COMMAND,
+        .command_event = {
+            .action = CONTROL_EVENT_COMMAND_SCREEN_ON,
+        },
+    };
+    if (!controller_push_event(&controller, &control_event)) {
+        SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, "Cannot turn screen on");
+    }
+}
+
 static SDL_bool handle_new_frame(void) {
     mutex_lock(frames.mutex);
     AVFrame *frame = frames.rendering_frame;
@@ -432,6 +444,10 @@ static void handle_mouse_motion(const SDL_MouseMotionEvent *event, struct size s
 }
 
 static void handle_mouse_button(const SDL_MouseButtonEvent *event, struct size screen_size) {
+    if (event->button == SDL_BUTTON_RIGHT) {
+        turn_screen_on();
+        return;
+    };
     struct control_event control_event;
     if (mouse_button_from_sdl_to_android(event, screen_size, &control_event)) {
         if (!controller_push_event(&controller, &control_event)) {