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

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"
 #include "media/base/media_format.h"
 #include "media/video/video_decode_context.h"
 #include "media/video/video_decode_engine.h"
+#include "media/ffmpeg/ffmpeg_common.h"
 
 class MessageLoop;
 
 namespace media {
 
 class Buffer;
 class OmxVideoDecodeEngine;
 class VideoFrame;
 
 class OmxVideoDecoder : public VideoDecoder,
                         public VideoDecodeEngine::EventHandler {
  public:
   explicit OmxVideoDecoder(VideoDecodeContext* decode_context);
   virtual ~OmxVideoDecoder();
 
   // Filter implementations.
   virtual void Initialize(DemuxerStream* stream, FilterCallback* callback);
   virtual void Stop(FilterCallback* callback);
   virtual void Flush(FilterCallback* callback);
   virtual void Seek(base::TimeDelta time, FilterCallback* callback);
   virtual void ProduceVideoFrame(scoped_refptr<VideoFrame> frame);
   virtual bool ProvidesBuffer();
   virtual const MediaFormat& media_format() { return media_format_; }
 
+  virtual const char* filter_name() { return "OmxVideoDecoder"; }
+  virtual bool supports_codec_id(int codec_id) {
+    switch (codec_id) {
+        case CODEC_ID_VC1:
+        case CODEC_ID_H264:
+        case CODEC_ID_THEORA:
+        case CODEC_ID_MPEG2VIDEO:
+        case CODEC_ID_MPEG4:
+          return true;
+        default:
+          return false;
+    }
+    return false;
+  }
+
  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 16 matching lines @@
   scoped_ptr<FilterCallback> seek_callback_;
 
   VideoCodecInfo info_;
 
   DISALLOW_COPY_AND_ASSIGN(OmxVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_OMX_VIDEO_DECODER_H_