media: recycle buffers/direct rendering etc. (third patch)

media/filters/ffmpeg_video_allocator.h

Index: media/filters/ffmpeg_video_allocator.h
diff --git a/media/filters/ffmpeg_video_allocator.h b/media/filters/ffmpeg_video_allocator.h
index 2cb1d742a4b69581589b903a1280af3b3402bd91..b72a1f114f361239f8a8b25307744933688f4777 100644
--- a/media/filters/ffmpeg_video_allocator.h
+++ b/media/filters/ffmpeg_video_allocator.h
@@ -28,7 +28,13 @@ class FFmpegVideoAllocator {
 
   struct RefCountedAVFrame {
     RefCountedAVFrame() : usage_count_(0) {}
-    ~RefCountedAVFrame() { DCHECK_EQ(usage_count_, 0); }
+
+    // TODO(jiesun): we had commented out "DCHECK_EQ(usage_count_, 0);" here.
+    // Because the way FFMPEG-MT handle release buffer in delayed fashion.
+    // Probably we could wait FFMPEG-MT release all buffers before we callback
+    // the flush completion.
+    ~RefCountedAVFrame() {}
+
     void AddRef() {
       base::AtomicRefCountIncN(&usage_count_, 1);
     }