Web media player pipeline: implemented feature to choose proper...

media/filters/ffmpeg_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_FFMPEG_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_
 
 #include <deque>
 
 #include "base/gtest_prod_util.h"
 #include "base/time.h"
 #include "media/base/filters.h"
 #include "media/base/pts_heap.h"
 #include "media/base/video_frame.h"
 #include "media/filters/decoder_base.h"
 #include "media/video/video_decode_engine.h"
+#include "media/ffmpeg/ffmpeg_common.h"
 
 // FFmpeg types.
 struct AVRational;
 
 namespace media {
 
 class VideoDecodeEngine;
 
 class FFmpegVideoDecoder : public VideoDecoder,
                            public VideoDecodeEngine::EventHandler {
  public:
   explicit FFmpegVideoDecoder(VideoDecodeContext* decode_context);
   virtual ~FFmpegVideoDecoder();
 
   // Filter implementation.
   virtual void Stop(FilterCallback* callback);
   virtual void Seek(base::TimeDelta time, FilterCallback* callback);
   virtual void Pause(FilterCallback* callback);
   virtual void Flush(FilterCallback* callback);
 
   // Decoder implementation.
   virtual void Initialize(DemuxerStream* demuxer_stream,
                           FilterCallback* callback);
   virtual const MediaFormat& media_format() { return media_format_; }
   virtual void ProduceVideoFrame(scoped_refptr<VideoFrame> video_frame);
   virtual bool ProvidesBuffer();
 
+  virtual const char* filter_name() { return "FFmpegVideoDecoder"; }
+  virtual bool supports_codec_id(int codec_id) {
+    // Tell that we support all possible video formats
+    return true;
+  }
+
  private:
   // VideoDecodeEngine::EventHandler interface.
   virtual void OnInitializeComplete(const VideoCodecInfo& info);
   virtual void OnUninitializeComplete();
   virtual void OnFlushComplete();
   virtual void OnSeekComplete();
   virtual void OnError();
   virtual void OnFormatChange(VideoStreamInfo stream_info);
   virtual void ProduceVideoSample(scoped_refptr<Buffer> buffer);
   virtual void ConsumeVideoFrame(scoped_refptr<VideoFrame> frame);
@@ skipping 77 matching lines @@
 
   // Pointer to the demuxer stream that will feed us compressed buffers.
   scoped_refptr<DemuxerStream> demuxer_stream_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_