MediaCodecPlayer implementation (stage 4 - preroll)

media/base/android/media_codec_bridge.h

Index: media/base/android/media_codec_bridge.h
diff --git a/media/base/android/media_codec_bridge.h b/media/base/android/media_codec_bridge.h
index 045e59c7c793e6d251905dc6e1689b77f4e2a27b..99ac6e8e9994c9963f950766cac643c9182d83ed 100644
--- a/media/base/android/media_codec_bridge.h
+++ b/media/base/android/media_codec_bridge.h
@@ -238,10 +238,18 @@ class AudioCodecBridge : public MediaCodecBridge {
              int64 codec_delay_ns, int64 seek_preroll_ns,
              bool play_audio, jobject media_crypto) WARN_UNUSED_RESULT;
 
-  // Play the output buffer. This call must be called after
-  // DequeueOutputBuffer() and before ReleaseOutputBuffer. Returns the playback
-  // head position expressed in frames.
-  int64 PlayOutputBuffer(int index, size_t size, size_t offset);
+  // Plays the output buffer right away or save for later playback if |postpone|
+  // is set to true. This call must be called after DequeueOutputBuffer() and
+  // before ReleaseOutputBuffer. The data is extracted from the output buffers
+  // using |index|, |size| and |offset|. Returns the playback head position
+  // expressed in frames.
+  // When |postpone| is set to true, the next PlayOutputBuffer() should have
+  // postpone == false, and it will play two buffers: the postponed one and
+  // the one identified by |index|.
+  int64 PlayOutputBuffer(int index,
+                         size_t size,
+                         size_t offset,
+                         bool postpone = false);
 
   // Set the volume of the audio output.
   void SetVolume(double volume);