Switch from a DataPipe per DecoderBuffer to a single one.

media/base/decoder_buffer.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_DECODER_BUFFER_H_
 #define MEDIA_BASE_DECODER_BUFFER_H_
 
 #include <string>
 #include <utility>
 
@@ skipping 151 matching lines @@
   }
 
   void set_is_key_frame(bool is_key_frame) {
     DCHECK(!end_of_stream());
     is_key_frame_ = is_key_frame;
   }
 
   // Returns a human-readable string describing |*this|.
   std::string AsHumanReadableString();
 
+  // Replaces any existing side data with data copied from |side_data|.
+  void CopySideDataFrom(const uint8* side_data, int side_data_size);
+
  protected:
   friend class base::RefCountedThreadSafe<DecoderBuffer>;
 
   // Allocates a buffer of size |size| >= 0 and copies |data| into it.  Buffer
   // will be padded and aligned as necessary.  If |data| is NULL then |data_| is
   // set to NULL and |buffer_size_| to 0.  |is_key_frame_| will default to
   // false.
   DecoderBuffer(const uint8* data, int size,
                 const uint8* side_data, int side_data_size);
   virtual ~DecoderBuffer();
@@ skipping 13 matching lines @@
 
   // Constructor helper method for memory allocations.
   void Initialize();
 
   DISALLOW_COPY_AND_ASSIGN(DecoderBuffer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_DECODER_BUFFER_H_