preparation for recycling buffer, patch 2

media/filters/omx_video_decoder.h

 // Copyright (c) 2010 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_OMX_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_OMX_VIDEO_DECODER_H_
 
 #include <queue>
 
 #include "media/base/filters.h"
@@ skipping 12 matching lines @@
  public:
   static FilterFactory* CreateFactory();
   static bool IsMediaFormatSupported(const MediaFormat& media_format);
 
   OmxVideoDecoder(OmxVideoDecodeEngine* engine);
   virtual ~OmxVideoDecoder();
 
   virtual void Initialize(DemuxerStream* stream, FilterCallback* callback);
   virtual void Stop(FilterCallback* callback);
   virtual void Pause(FilterCallback* callback);
+  virtual void Flush(FilterCallback* callback);
   virtual void Seek(base::TimeDelta time, FilterCallback* callback);
   virtual void FillThisBuffer(scoped_refptr<VideoFrame> frame);
+  virtual bool ProvidesBuffer();
   virtual const MediaFormat& media_format() { return media_format_; }
 
  private:
   virtual void DoInitialize(DemuxerStream* stream, FilterCallback* callback);
 
   // Called after the decode engine has successfully decoded something.
   void FillBufferCallback(scoped_refptr<VideoFrame> frame);
 
   // Called after the decode engine has consumed an input buffer.
   void EmptyBufferCallback(scoped_refptr<Buffer> buffer);
 
   void InitCompleteTask(FilterCallback* callback);
 
   void StopCompleteTask(FilterCallback* callback);
   void PauseCompleteTask(FilterCallback* callback);
+  void FlushCompleteTask(FilterCallback* callback);
   void SeekCompleteTask(FilterCallback* callback);
 
   // TODO(hclam): This is very ugly that we keep reference instead of
   // scoped_refptr.
   void DemuxCompleteTask(Buffer* buffer);
 
   // Calls |omx_engine_|'s EmptyThisBuffer() method on the right thread.
   void EmptyBufferTask(scoped_refptr<Buffer> buffer);
 
   DemuxerStream* demuxer_stream_;
   bool supports_egl_image_;
   scoped_refptr<OmxVideoDecodeEngine> omx_engine_;
   MediaFormat media_format_;
   size_t width_;
   size_t height_;
 
   DISALLOW_COPY_AND_ASSIGN(OmxVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_OMX_VIDEO_DECODER_H_