applemedia/gl: Update code to use ARC

All code interacting with Objective-C objects should now use Automated
Reference Counting rather than manual memory management or Garbage
Collection. Because ARC prohibits C-structs from containing
references to Objective-C objects, all such fields are now typed
'gpointer'. Setting and gettings Objective-C fields on such a
struct now uses explicit __bridge_* calls to tell ARC about
object lifetimes.

https://bugzilla.gnome.org/show_bug.cgi?id=777847

1 files changed, 5 insertions, 1 deletions

diff --git a/sys/applemedia/avsamplevideosink.h b/sys/applemedia/avsamplevideosink.h
index 3b9ed478d..6e7d5959d 100644
--- a/sys/applemedia/avsamplevideosink.h
+++ b/sys/applemedia/avsamplevideosink.h
@@ -42,6 +42,8 @@ G_BEGIN_DECLS
     (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AV_SAMPLE_VIDEO_SINK))
 #define GST_IS_AV_SAMPLE_VIDEO_SINK_CLASS(klass) \
     (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AV_SAMPLE_VIDEO_SINK))
+#define GST_AV_SAMPLE_VIDEO_SINK_LAYER(obj) \
+    ((__bridge AVSampleBufferDisplayLayer *)(obj->layer))
 
 typedef struct _GstAVSampleVideoSink GstAVSampleVideoSink;
 typedef struct _GstAVSampleVideoSinkClass GstAVSampleVideoSinkClass;
@@ -50,7 +52,9 @@ struct _GstAVSampleVideoSink
 {
     GstVideoSink video_sink;
 
-    AVSampleBufferDisplayLayer *layer;
+    /* NOTE: ARC no longer allows Objective-C pointers in structs. */
+    /* Instead, use gpointer with explicit __bridge_* calls */
+    gpointer layer;
 
     GstVideoInfo info;