chromecast/media/cma/pipeline/audio_pipeline_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 CHROMECAST_MEDIA_CMA_BASE_AUDIO_PIPELINE_IMPL_H_
   6 #define CHROMECAST_MEDIA_CMA_BASE_AUDIO_PIPELINE_IMPL_H_
   7
   8 #include "base/callback.h"
   9 #include "base/macros.h"
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/threading/thread_checker.h"
  13 #include "chromecast/media/cma/pipeline/audio_pipeline.h"
  14 #include "chromecast/media/cma/pipeline/av_pipeline_client.h"
  15
  16 namespace media {
  17 class AudioDecoderConfig;
  18 class VideoDecoderConfig;
  19 }
  20
  21 namespace chromecast {
  22 namespace media {
  23 class AudioPipelineDevice;
  24 class AvPipelineImpl;
  25 class BrowserCdmCast;
  26 class BufferingState;
  27 class CodedFrameProvider;
  28
  29 class AudioPipelineImpl : public AudioPipeline {
  30  public:
  31   // |buffering_controller| can be NULL.
  32   explicit AudioPipelineImpl(AudioPipelineDevice* audio_device);
  33   ~AudioPipelineImpl() override;
  34
  35   // Input port of the pipeline.
  36   void SetCodedFrameProvider(scoped_ptr<CodedFrameProvider> frame_provider);
  37
  38   // Provide the CDM to use to decrypt samples.
  39   void SetCdm(BrowserCdmCast* media_keys);
  40
  41   // Functions to control the state of the audio pipeline.
  42   void Initialize(
  43       const ::media::AudioDecoderConfig& config,
  44       scoped_ptr<CodedFrameProvider> frame_provider,
  45       const ::media::PipelineStatusCB& status_cb);
  46   bool StartPlayingFrom(base::TimeDelta time,
  47                         const scoped_refptr<BufferingState>& buffering_state);
  48   void Flush(const ::media::PipelineStatusCB& status_cb);
  49   void Stop();
  50
  51   // Update the playback statistics for this audio stream.
  52   void UpdateStatistics();
  53
  54   // AudioPipeline implementation.
  55   void SetClient(const AvPipelineClient& client) override;
  56   void SetVolume(float volume) override;
  57
  58  private:
  59   void OnFlushDone(const ::media::PipelineStatusCB& status_cb);
  60   void OnUpdateConfig(const ::media::AudioDecoderConfig& audio_config,
  61                       const ::media::VideoDecoderConfig& video_config);
  62
  63   AudioPipelineDevice* audio_device_;
  64
  65   scoped_ptr<AvPipelineImpl> av_pipeline_impl_;
  66   AvPipelineClient audio_client_;
  67
  68   ::media::PipelineStatistics previous_stats_;
  69
  70   base::WeakPtr<AudioPipelineImpl> weak_this_;
  71   base::WeakPtrFactory<AudioPipelineImpl> weak_factory_;
  72
  73   DISALLOW_COPY_AND_ASSIGN(AudioPipelineImpl);
  74 };
  75
  76 }  // namespace media
  77 }  // namespace chromecast
  78
  79 #endif  // CHROMECAST_MEDIA_CMA_BASE_AUDIO_PIPELINE_IMPL_H_