media: Add support for playback of VP8 Alpha video streams

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 "base/memory/aligned_memory.h"
@@ skipping 29 matching lines @@
   };
 
   // Allocates buffer with |size| >= 0.  Buffer will be padded and aligned
   // as necessary.
   explicit DecoderBuffer(int size);
 
   // Create a DecoderBuffer whose |data_| is copied from |data|.  Buffer will be
   // padded and aligned as necessary.  |data| must not be NULL and |size| >= 0.
   static scoped_refptr<DecoderBuffer> CopyFrom(const uint8* data, int size);
 
+  // Create a DecoderBuffer whose |data_| is copied from |data| and |side_data_|
+  // is copied from |side_data|. Buffers will be padded and aligned as necessary
+  // |data| must not be NULL and |size| >= 0.
+  static scoped_refptr<DecoderBuffer> CopyFrom(const uint8* data, int size,
+                                                const uint8* side_data,
+                                                int side_data_size);

[Tom Finegan, 2013/02/25 22:56:06]

Align per
http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml?showone=Functi...

[vignesh, 2013/02/25 23:33:14]

deceived by eclipse as it bolds the type. :)

Done.

+
   // Create a DecoderBuffer indicating we've reached end of stream.
   //
   // Calling any method other than IsEndOfStream() on the resulting buffer
   // is disallowed.
   static scoped_refptr<DecoderBuffer> CreateEOSBuffer();
 
   base::TimeDelta GetTimestamp() const;
   void SetTimestamp(const base::TimeDelta& timestamp);
 
   base::TimeDelta GetDuration() const;
   void SetDuration(const base::TimeDelta& duration);
 
   const uint8* GetData() const;
   uint8* GetWritableData() const;
 
   int GetDataSize() const;
 
+  const uint8* GetSideData() const;
+  int GetSideDataSize() const;
+
   const DecryptConfig* GetDecryptConfig() const;
   void SetDecryptConfig(scoped_ptr<DecryptConfig> decrypt_config);
 
   // If there's no data in this buffer, it represents end of stream.
   bool IsEndOfStream() const;
 
   // Returns a human-readable string describing |*this|.
   std::string AsHumanReadableString();
 
  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.
   DecoderBuffer(const uint8* data, int size);
+  DecoderBuffer(const uint8* data, int size, const uint8* side_data,
+                int side_data_size);

[Tom Finegan, 2013/02/25 22:56:06]

data and size on same line, side_data and side_data_size on the same line.

[vignesh, 2013/02/25 23:33:14]

Done.

   virtual ~DecoderBuffer();
 
  private:
   base::TimeDelta timestamp_;
   base::TimeDelta duration_;
 
   int size_;
   scoped_ptr<uint8, base::ScopedPtrAlignedFree> data_;
+  int side_data_size_;
+  scoped_ptr<uint8, base::ScopedPtrAlignedFree> side_data_;
   scoped_ptr<DecryptConfig> decrypt_config_;
 
   // Constructor helper method for memory allocations.
   void Initialize();
 
   DISALLOW_COPY_AND_ASSIGN(DecoderBuffer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_DECODER_BUFFER_H_