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