chromecast/media/cma/backend/media_component_device_default.h

   1 // Copyright 2015 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_BACKEND_MEDIA_COMPONENT_DEVICE_DEFAULT_H_
   6 #define CHROMECAST_MEDIA_CMA_BACKEND_MEDIA_COMPONENT_DEVICE_DEFAULT_H_
   7
   8 #include <list>
   9
  10 #include "base/macros.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/threading/thread_checker.h"
  13
  14 #include "chromecast/public/media/media_clock_device.h"
  15 #include "chromecast/public/media/media_component_device.h"
  16
  17 namespace chromecast {
  18 class TaskRunner;
  19
  20 namespace media {
  21 struct MediaPipelineDeviceParams;
  22
  23 class MediaComponentDeviceDefault : public MediaComponentDevice {
  24  public:
  25   MediaComponentDeviceDefault(const MediaPipelineDeviceParams& params,
  26                               MediaClockDevice* media_clock_device);
  27   ~MediaComponentDeviceDefault() override;
  28
  29   // MediaComponentDevice implementation.
  30   void SetClient(Client* client) override;
  31   State GetState() const override;
  32   bool SetState(State new_state) override;
  33   bool SetStartPts(int64_t time_microseconds) override;
  34   FrameStatus PushFrame(DecryptContext* decrypt_context,
  35                         CastDecoderBuffer* buffer,
  36                         FrameStatusCB* completion_cb) override;
  37   RenderingDelay GetRenderingDelay() const override;
  38   bool GetStatistics(Statistics* stats) const override;
  39
  40  private:
  41   struct DefaultDecoderBuffer {
  42     DefaultDecoderBuffer();
  43     ~DefaultDecoderBuffer();
  44
  45     // Buffer size.
  46     size_t size;
  47
  48     // Presentation timestamp.
  49     base::TimeDelta pts;
  50   };
  51
  52   void RenderTask();
  53
  54   TaskRunner* task_runner_;
  55   MediaClockDevice* const media_clock_device_;
  56   scoped_ptr<Client> client_;
  57
  58   State state_;
  59
  60   // Indicate whether the end of stream has been received.
  61   bool is_eos_;
  62
  63   // Media time of the last rendered audio sample.
  64   base::TimeDelta rendering_time_;
  65
  66   // Frame decoded/rendered since the pipeline left the idle state.
  67   uint64 decoded_frame_count_;
  68   uint64 decoded_byte_count_;
  69
  70   // List of frames not rendered yet.
  71   std::list<DefaultDecoderBuffer> frames_;
  72
  73   // Indicate whether there is a scheduled rendering task.
  74   bool scheduled_rendering_task_;
  75
  76   // Pending frame.
  77   scoped_ptr<CastDecoderBuffer> pending_buffer_;
  78   scoped_ptr<FrameStatusCB> frame_pushed_cb_;
  79
  80   base::ThreadChecker thread_checker_;
  81
  82   base::WeakPtr<MediaComponentDeviceDefault> weak_this_;
  83   base::WeakPtrFactory<MediaComponentDeviceDefault> weak_factory_;
  84
  85   DISALLOW_COPY_AND_ASSIGN(MediaComponentDeviceDefault);
  86 };
  87
  88 }  // namespace media
  89 }  // namespace chromecast
  90
  91 #endif  // CHROMECAST_MEDIA_CMA_BACKEND_MEDIA_COMPONENT_DEVICE_DEFAULT_H_