Add config change handling to SourceBufferStream & ChunkDemuxer

media/base/video_decoder_config.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_BASE_VIDEO_DECODER_CONFIG_H_
 #define MEDIA_BASE_VIDEO_DECODER_CONFIG_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/media_export.h"
@@ skipping 78 matching lines @@
                   const uint8* extra_data, size_t extra_data_size,
                   bool record_stats);
 
   // Deep copies |video_config|.
   void CopyFrom(const VideoDecoderConfig& video_config);
 
   // Returns true if this object has appropriate configuration values, false
   // otherwise.
   bool IsValidConfig() const;
 
+  // Returns true if all fields in |config| match this config.
+  // Note: The contents of |extra_data_| are compared not the raw pointers.
+  bool Matches(const VideoDecoderConfig& config) const;
+
   // Returns a human-readable string describing |*this|.  For debugging & test
   // output only.
   std::string AsHumanReadableString() const;
 
   VideoCodec codec() const;
   VideoCodecProfile profile() const;
 
   // Video format used to determine YUV buffer sizes.
   VideoFrame::Format format() const;
 
@@ skipping 46 matching lines @@
 
   scoped_array<uint8> extra_data_;
   size_t extra_data_size_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoDecoderConfig);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_VIDEO_DECODER_CONFIG_H_