Index: media/base/renderer.h |
diff --git a/media/base/renderer.h b/media/base/renderer.h |
index 89e349a9350d1c44564690a84bdc2391589e78d2..f5d59776af7fc177e733baffb2b4e77b5c0dbe1b 100644 |
--- a/media/base/renderer.h |
+++ b/media/base/renderer.h |
@@ -5,6 +5,8 @@ |
#ifndef MEDIA_BASE_RENDERER_H_ |
#define MEDIA_BASE_RENDERER_H_ |
+#include <vector> |
+ |
#include "base/callback.h" |
#include "base/macros.h" |
#include "base/memory/ref_counted.h" |
@@ -16,6 +18,7 @@ |
namespace media { |
+class DemuxerStream; |
class DemuxerStreamProvider; |
class VideoFrame; |
@@ -77,6 +80,17 @@ class MEDIA_EXPORT Renderer { |
// Returns whether |this| renders video. |
virtual bool HasVideo() = 0; |
+ // Notifies renderer that the set of enabled audio streams/tracks has changed. |
+ // The input parameter |enabledAudioStreams| might be empty, which means that |
+ // all audio tracks should be disabled/muted. |
+ virtual void OnEnabledAudioStreamsChanged( |
+ const std::vector<const DemuxerStream*>& enabledAudioStreams) {} |
+ |
+ // Notifies renderer that the selected video stream has changed. The input |
+ // parameter |selectedVideoStream| can be null, which means video is disabled. |
+ virtual void OnSelectedVideoStreamChanged( |
+ const DemuxerStream* selectedVideoStream) {} |
+ |
private: |
DISALLOW_COPY_AND_ASSIGN(Renderer); |
}; |