media/mojo/services/mojo_demuxer_stream_impl.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_MOJO_SERVICES_MOJO_DEMUXER_STREAM_IMPL_H_
   6 #define MEDIA_MOJO_SERVICES_MOJO_DEMUXER_STREAM_IMPL_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "media/base/demuxer_stream.h"
  11 #include "media/mojo/interfaces/demuxer_stream.mojom.h"
  12 #include "third_party/mojo/src/mojo/public/cpp/bindings/strong_binding.h"
  13
  14 namespace media {
  15 class DemuxerStream;
  16
  17 // This class wraps a media::DemuxerStream and exposes it as a
  18 // interfaces::DemuxerStream for use as a proxy from remote applications.
  19 class MojoDemuxerStreamImpl : public interfaces::DemuxerStream {
  20  public:
  21   // |stream| is the underlying DemuxerStream we are proxying for.
  22   // Note: |this| does not take ownership of |stream|.
  23   MojoDemuxerStreamImpl(
  24       media::DemuxerStream* stream,
  25       mojo::InterfaceRequest<interfaces::DemuxerStream> request);
  26   ~MojoDemuxerStreamImpl() override;
  27
  28   // interfaces::DemuxerStream implementation.
  29   // InitializeCallback and ReadCallback are defined in
  30   // interfaces::DemuxerStream.
  31   void Initialize(const InitializeCallback& callback) override;
  32   void Read(const ReadCallback& callback) override;
  33
  34  private:
  35   void OnBufferReady(const ReadCallback& callback,
  36                      media::DemuxerStream::Status status,
  37                      const scoped_refptr<media::DecoderBuffer>& buffer);
  38
  39   mojo::StrongBinding<interfaces::DemuxerStream> binding_;
  40
  41   // See constructor.  We do not own |stream_|.
  42   media::DemuxerStream* stream_;
  43
  44   // DataPipe for serializing the data section of DecoderBuffer into.
  45   mojo::ScopedDataPipeProducerHandle stream_pipe_;
  46
  47   base::WeakPtrFactory<MojoDemuxerStreamImpl> weak_factory_;
  48   DISALLOW_COPY_AND_ASSIGN(MojoDemuxerStreamImpl);
  49 };
  50
  51 }  // namespace media
  52
  53 #endif  // MEDIA_MOJO_SERVICES_MOJO_DEMUXER_STREAM_IMPL_H_