Add callback in VideoDecoder and AudioDecoder to return decoded frames.

media/filters/opus_audio_decoder.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_
 #define MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_
 
 #include "base/callback.h"
 #include "base/time/time.h"
 #include "media/base/audio_decoder.h"
@@ skipping 14 matching lines @@
 struct QueuedAudioBuffer;
 
 class MEDIA_EXPORT OpusAudioDecoder : public AudioDecoder {
  public:
   explicit OpusAudioDecoder(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
   virtual ~OpusAudioDecoder();
 
   // AudioDecoder implementation.
   virtual void Initialize(const AudioDecoderConfig& config,
-                          const PipelineStatusCB& status_cb) OVERRIDE;
+                          const PipelineStatusCB& status_cb,
+                          const OutputCB& output_cb) OVERRIDE;
   virtual void Decode(const scoped_refptr<DecoderBuffer>& buffer,
                       const DecodeCB& decode_cb) OVERRIDE;
   virtual void Reset(const base::Closure& closure) OVERRIDE;
   virtual void Stop() OVERRIDE;
 
  private:
   // Reads from the demuxer stream with corresponding callback method.
   void ReadFromDemuxerStream();
   void DecodeBuffer(const scoped_refptr<DecoderBuffer>& input,
                     const DecodeCB& decode_cb);
 
   bool ConfigureDecoder();
   void CloseDecoder();
   void ResetTimestampState();
   bool Decode(const scoped_refptr<DecoderBuffer>& input,
               scoped_refptr<AudioBuffer>* output_buffer);
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   AudioDecoderConfig config_;
+  OutputCB output_cb_;
   OpusMSDecoder* opus_decoder_;
 
   // When the input timestamp is |start_input_timestamp_| the decoder needs to
   // drop |config_.codec_delay()| frames.
   base::TimeDelta start_input_timestamp_;
 
   scoped_ptr<AudioDiscardHelper> discard_helper_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(OpusAudioDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_