media/filters/decoder_stream_traits.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_FILTERS_DECODER_STREAM_TRAITS_H_
#define MEDIA_FILTERS_DECODER_STREAM_TRAITS_H_

#include "media/base/cdm_context.h"
#include "media/base/demuxer_stream.h"
#include "media/base/pipeline_status.h"

namespace media {

class AudioBuffer;
class AudioDecoder;
class CdmContext;
class DecryptingAudioDecoder;
class DecryptingVideoDecoder;
class DemuxerStream;
class VideoDecoder;
class VideoFrame;

template <DemuxerStream::Type StreamType>
struct DecoderStreamTraits {};

template <>
struct DecoderStreamTraits<DemuxerStream::AUDIO> {
  typedef AudioBuffer OutputType;
  typedef AudioDecoder DecoderType;
  typedef DecryptingAudioDecoder DecryptingDecoderType;
  typedef base::Callback<void(bool success)> InitCB;
  typedef base::Callback<void(const scoped_refptr<OutputType>&)> OutputCB;

  static std::string ToString();
  static void InitializeDecoder(DecoderType* decoder,
                                DemuxerStream* stream,
                                CdmContext* cdm_context,
                                const InitCB& init_cb,
                                const OutputCB& output_cb);
  static bool NeedsBitstreamConversion(DecoderType* decoder);
  static void ReportStatistics(const StatisticsCB& statistics_cb,
                               int bytes_decoded);
  static scoped_refptr<OutputType> CreateEOSOutput();
};

template <>
struct DecoderStreamTraits<DemuxerStream::VIDEO> {
  typedef VideoFrame OutputType;
  typedef VideoDecoder DecoderType;
  typedef DecryptingVideoDecoder DecryptingDecoderType;
  typedef base::Callback<void(bool success)> InitCB;
  typedef base::Callback<void(const scoped_refptr<OutputType>&)> OutputCB;

  static std::string ToString();
  static void InitializeDecoder(DecoderType* decoder,
                                DemuxerStream* stream,
                                CdmContext* cdm_context,
                                const InitCB& init_cb,
                                const OutputCB& output_cb);
  static bool NeedsBitstreamConversion(DecoderType* decoder);
  static void ReportStatistics(const StatisticsCB& statistics_cb,
                               int bytes_decoded);
  static scoped_refptr<OutputType> CreateEOSOutput();
};

}  // namespace media

#endif  // MEDIA_FILTERS_DECODER_STREAM_TRAITS_H_