chromecast/media/cma/pipeline/media_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_PIPELINE_MEDIA_PIPELINE_IMPL_H_
   6 #define CHROMECAST_MEDIA_CMA_PIPELINE_MEDIA_PIPELINE_IMPL_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/macros.h"
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "base/threading/thread_checker.h"
  14 #include "chromecast/media/cma/pipeline/load_type.h"
  15 #include "chromecast/media/cma/pipeline/media_pipeline.h"
  16 #include "chromecast/media/cma/pipeline/media_pipeline_client.h"
  17 #include "media/base/serial_runner.h"
  18
  19 namespace chromecast {
  20 namespace media {
  21 class AudioPipelineImpl;
  22 class BrowserCdmCast;
  23 class BufferingController;
  24 class MediaClockDevice;
  25 class MediaPipelineDevice;
  26 class VideoPipelineImpl;
  27
  28 class MediaPipelineImpl : public MediaPipeline {
  29  public:
  30   MediaPipelineImpl();
  31   ~MediaPipelineImpl() override;
  32
  33   // Initialize the media pipeline: the pipeline is configured based on
  34   // |load_type|.
  35   void Initialize(LoadType load_type,
  36                   scoped_ptr<MediaPipelineDevice> media_pipeline_device);
  37
  38   // MediaPipeline implementation.
  39   void SetClient(const MediaPipelineClient& client) override;
  40   void SetCdm(int cdm_id) override;
  41   AudioPipeline* GetAudioPipeline() const override;
  42   VideoPipeline* GetVideoPipeline() const override;
  43   void InitializeAudio(
  44       const ::media::AudioDecoderConfig& config,
  45       scoped_ptr<CodedFrameProvider> frame_provider,
  46       const ::media::PipelineStatusCB& status_cb) override;
  47   void InitializeVideo(
  48       const std::vector<::media::VideoDecoderConfig>& configs,
  49       scoped_ptr<CodedFrameProvider> frame_provider,
  50       const ::media::PipelineStatusCB& status_cb) override;
  51   void StartPlayingFrom(base::TimeDelta time) override;
  52   void Flush(const ::media::PipelineStatusCB& status_cb) override;
  53   void Stop() override;
  54   void SetPlaybackRate(double playback_rate) override;
  55
  56   AudioPipelineImpl* GetAudioPipelineImpl() const;
  57   VideoPipelineImpl* GetVideoPipelineImpl() const;
  58
  59   void SetCdm(BrowserCdmCast* cdm);
  60
  61  private:
  62   void StateTransition(const ::media::PipelineStatusCB& status_cb,
  63                        ::media::PipelineStatus status);
  64
  65   // Invoked to notify about a change of buffering state.
  66   void OnBufferingNotification(bool is_buffering);
  67
  68   void UpdateMediaTime();
  69
  70   void OnError(::media::PipelineStatus error);
  71
  72   base::ThreadChecker thread_checker_;
  73
  74   MediaPipelineClient client_;
  75
  76   scoped_ptr<BufferingController> buffering_controller_;
  77
  78   // Interface with the underlying hardware media pipeline.
  79   scoped_ptr<MediaPipelineDevice> media_pipeline_device_;
  80   MediaClockDevice* clock_device_;
  81
  82   bool has_audio_;
  83   bool has_video_;
  84   scoped_ptr<AudioPipelineImpl> audio_pipeline_;
  85   scoped_ptr<VideoPipelineImpl> video_pipeline_;
  86   scoped_ptr< ::media::SerialRunner> pending_flush_callbacks_;
  87
  88   // Playback rate set by the upper layer.
  89   float target_playback_rate_;
  90
  91   // Indicate a possible re-buffering phase.
  92   bool is_buffering_;
  93
  94   // The media time is retrieved at regular intervals.
  95   // Indicate whether time update is enabled.
  96   bool enable_time_update_;
  97   bool pending_time_update_task_;
  98   base::TimeDelta last_media_time_;
  99
 100   // Used to make the statistics update period a multiplier of the time update
 101   // period.
 102   int statistics_rolling_counter_;
 103
 104   base::WeakPtr<MediaPipelineImpl> weak_this_;
 105   base::WeakPtrFactory<MediaPipelineImpl> weak_factory_;
 106
 107   DISALLOW_COPY_AND_ASSIGN(MediaPipelineImpl);
 108 };
 109
 110 }  // namespace media
 111 }  // namespace chromecast
 112
 113 #endif  // CHROMECAST_MEDIA_CMA_PIPELINE_MEDIA_PIPELINE_IMPL_H_