mac-capture: Remove disp_finished event

This event is only used within destroy_[audio]_screen_stream, and does
not appear to be necessary there. stopCaptureWithCompletionHandler holds
a reference to the SCStream object by itself (and the other objects
being held aren't used afterwards anyways), so there should be no harm
in releasing everything immediately without blocking.

plugins/mac-capture/mac-sck-audio-capture.m

@@ -13,9 +13,7 @@ API_AVAILABLE(macos(13.0)) static void destroy_audio_screen_stream(struct screen
                 MACCAP_ERR("destroy_audio_screen_stream: Failed to stop stream with error %s\n",
                            [[error localizedFailureReason] cStringUsingEncoding:NSUTF8StringEncoding]);
             }
-            os_event_signal(sc->disp_finished);
         }];
-        os_event_wait(sc->disp_finished);
     }
 
     if (sc->stream_properties) {
@@ -28,7 +26,6 @@ API_AVAILABLE(macos(13.0)) static void destroy_audio_screen_stream(struct screen
         sc->disp = NULL;
     }
 
-    os_event_destroy(sc->disp_finished);
     os_event_destroy(sc->stream_start_completed);
 }
 
@@ -152,7 +149,6 @@ API_AVAILABLE(macos(13.0)) static bool init_audio_screen_stream(struct screen_ca
         sc->disp = NULL;
         return !did_add_output;
     }
-    os_event_init(&sc->disp_finished, OS_EVENT_TYPE_MANUAL);
     os_event_init(&sc->stream_start_completed, OS_EVENT_TYPE_MANUAL);
 
     __block BOOL did_stream_start = false;

plugins/mac-capture/mac-sck-common.h

@@ -52,7 +52,6 @@ struct API_AVAILABLE(macos(12.5)) screen_capture {
     SCShareableContent *shareable_content;
     ScreenCaptureDelegate *capture_delegate;
 
-    os_event_t *disp_finished;
     os_event_t *stream_start_completed;
     os_sem_t *shareable_content_available;
     IOSurfaceRef current, prev;

plugins/mac-capture/mac-sck-video-capture.m

@@ -9,9 +9,7 @@ API_AVAILABLE(macos(12.5)) static void destroy_screen_stream(struct screen_captu
                 MACCAP_ERR("destroy_screen_stream: Failed to stop stream with error %s\n",
                            [[error localizedFailureReason] cStringUsingEncoding:NSUTF8StringEncoding]);
             }
-            os_event_signal(sc->disp_finished);
         }];
-        os_event_wait(sc->disp_finished);
     }
 
     if (sc->stream_properties) {
@@ -41,7 +39,6 @@ API_AVAILABLE(macos(12.5)) static void destroy_screen_stream(struct screen_captu
         sc->disp = NULL;
     }
 
-    os_event_destroy(sc->disp_finished);
     os_event_destroy(sc->stream_start_completed);
 }
 
@@ -110,7 +107,6 @@ API_AVAILABLE(macos(12.5)) static bool init_screen_stream(struct screen_capture
                 MACCAP_ERR("init_screen_stream: Invalid target display ID:  %u\n", sc->display);
                 os_sem_post(sc->shareable_content_available);
                 sc->disp = NULL;
-                os_event_init(&sc->disp_finished, OS_EVENT_TYPE_MANUAL);
                 os_event_init(&sc->stream_start_completed, OS_EVENT_TYPE_MANUAL);
                 return true;
             }
@@ -152,7 +148,6 @@ API_AVAILABLE(macos(12.5)) static bool init_screen_stream(struct screen_capture
                 MACCAP_ERR("init_screen_stream: Invalid target window ID:  %u\n", sc->window);
                 os_sem_post(sc->shareable_content_available);
                 sc->disp = NULL;
-                os_event_init(&sc->disp_finished, OS_EVENT_TYPE_MANUAL);
                 os_event_init(&sc->stream_start_completed, OS_EVENT_TYPE_MANUAL);
                 return true;
             } else {
@@ -172,7 +167,6 @@ API_AVAILABLE(macos(12.5)) static bool init_screen_stream(struct screen_capture
                 MACCAP_ERR("init_screen_stream: Invalid target display ID:  %u\n", sc->display);
                 os_sem_post(sc->shareable_content_available);
                 sc->disp = NULL;
-                os_event_init(&sc->disp_finished, OS_EVENT_TYPE_MANUAL);
                 os_event_init(&sc->stream_start_completed, OS_EVENT_TYPE_MANUAL);
                 return true;
             }
@@ -217,7 +211,6 @@ API_AVAILABLE(macos(12.5)) static bool init_screen_stream(struct screen_capture
         if (sc->capture_type != ScreenCaptureWindowStream) {
             sc->disp = NULL;
             [content_filter release];
-            os_event_init(&sc->disp_finished, OS_EVENT_TYPE_MANUAL);
             os_event_init(&sc->stream_start_completed, OS_EVENT_TYPE_MANUAL);
             return true;
         }
@@ -250,7 +243,6 @@ API_AVAILABLE(macos(12.5)) static bool init_screen_stream(struct screen_capture
             return !did_add_output;
         }
     }
-    os_event_init(&sc->disp_finished, OS_EVENT_TYPE_MANUAL);
     os_event_init(&sc->stream_start_completed, OS_EVENT_TYPE_MANUAL);
 
     __block BOOL did_stream_start = NO;