media: Add MojoDecoderBuffer{Reader|Writer}

media/mojo/clients/mojo_demuxer_stream_impl.h

 // Copyright 2014 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_MOJO_CLIENTS_MOJO_DEMUXER_STREAM_IMPL_H_
 #define MEDIA_MOJO_CLIENTS_MOJO_DEMUXER_STREAM_IMPL_H_
 
+#include <memory>
+
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "media/base/demuxer_stream.h"
 #include "media/mojo/interfaces/demuxer_stream.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 namespace media {
+
 class DemuxerStream;
+class MojoDecoderBufferWriter;
 
 // This class wraps a media::DemuxerStream and exposes it as a
 // mojom::DemuxerStream for use as a proxy from remote applications.
 class MojoDemuxerStreamImpl : public mojom::DemuxerStream {
  public:
   // |stream| is the underlying DemuxerStream we are proxying for.
   // Note: |this| does not take ownership of |stream|.
   MojoDemuxerStreamImpl(media::DemuxerStream* stream,
                         mojo::InterfaceRequest<mojom::DemuxerStream> request);
   ~MojoDemuxerStreamImpl() override;
@@ skipping 14 matching lines @@
  private:
   void OnBufferReady(const ReadCallback& callback,
                      media::DemuxerStream::Status status,
                      const scoped_refptr<media::DecoderBuffer>& buffer);
 
   mojo::Binding<mojom::DemuxerStream> binding_;
 
   // See constructor.  We do not own |stream_|.
   media::DemuxerStream* stream_;
 
-  // DataPipe for serializing the data section of DecoderBuffer into.
-  mojo::ScopedDataPipeProducerHandle stream_pipe_;
+  std::unique_ptr<MojoDecoderBufferWriter> mojo_decoder_buffer_writer_;
 
   base::WeakPtrFactory<MojoDemuxerStreamImpl> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(MojoDemuxerStreamImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_CLIENTS_MOJO_DEMUXER_STREAM_IMPL_H_