Media Remoting Clean-up: Less-redundant naming, style consistency, etc.

media/remoting/remote_renderer_impl.h

Index: media/remoting/remote_renderer_impl.h
diff --git a/media/remoting/remote_renderer_impl.h b/media/remoting/remote_renderer_impl.h
deleted file mode 100644
index e23427540c04366b740a780bbf9a0aa3e52acc61..0000000000000000000000000000000000000000
--- a/media/remoting/remote_renderer_impl.h
+++ /dev/null
@@ -1,241 +0,0 @@
-// Copyright 2016 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_REMOTING_REMOTE_RENDERER_IMPL_H_
-#define MEDIA_REMOTING_REMOTE_RENDERER_IMPL_H_
-
-#include <stdint.h>
-
-#include <memory>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "base/optional.h"
-#include "base/synchronization/lock.h"
-#include "base/timer/timer.h"
-#include "media/base/buffering_state.h"
-#include "media/base/pipeline_status.h"
-#include "media/base/renderer.h"
-#include "media/base/renderer_client.h"
-#include "media/mojo/interfaces/remoting.mojom.h"
-#include "media/remoting/metrics.h"
-#include "media/remoting/remoting_interstitial_ui.h"
-#include "media/remoting/rpc/rpc_broker.h"
-#include "mojo/public/cpp/system/data_pipe.h"
-
-namespace media {
-
-class RemotingRendererController;
-class Renderer;
-
-namespace remoting {
-class RemoteDemuxerStreamAdapter;
-};
-
-// A media::Renderer implementation that use a media::Renderer to render
-// media streams.
-class RemoteRendererImpl : public Renderer {
- public:
-  // The whole class except for constructor and GetMediaTime() runs on
-  // |media_task_runner|. The constructor and GetMediaTime() run on render main
-  // thread.
-  RemoteRendererImpl(
-      scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
-      const base::WeakPtr<RemotingRendererController>&
-          remoting_renderer_controller,
-      VideoRendererSink* video_renderer_sink);
-  ~RemoteRendererImpl() final;
-
- private:
-  // Callback when attempting to establish data pipe. The function is set to
-  // static in order to post task to media thread in order to avoid threading
-  // race condition.
-  static void OnDataPipeCreatedOnMainThread(
-      scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
-      base::WeakPtr<RemoteRendererImpl> self,
-      base::WeakPtr<remoting::RpcBroker> rpc_broker,
-      mojom::RemotingDataStreamSenderPtrInfo audio,
-      mojom::RemotingDataStreamSenderPtrInfo video,
-      mojo::ScopedDataPipeProducerHandle audio_handle,
-      mojo::ScopedDataPipeProducerHandle video_handle);
-
-  // Callback function when RPC message is received. The function is set to
-  // static in order to post task to media thread in order to avoid threading
-  // race condition.
-  static void OnMessageReceivedOnMainThread(
-      scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
-      base::WeakPtr<RemoteRendererImpl> self,
-      std::unique_ptr<remoting::pb::RpcMessage> message);
-
-  // Callback when remoting interstitial needs to be updated. Will post task to
-  // media thread to avoid threading race condition.
-  static void RequestUpdateInterstitialOnMainThread(
-      scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
-      base::WeakPtr<RemoteRendererImpl> remote_renderer_impl,
-      const base::Optional<SkBitmap>& background_image,
-      const gfx::Size& canvas_size,
-      RemotingInterstitialType interstitial_type);
-
- public:
-  // media::Renderer implementation.
-  void Initialize(DemuxerStreamProvider* demuxer_stream_provider,
-                  media::RendererClient* client,
-                  const PipelineStatusCB& init_cb) final;
-  void SetCdm(CdmContext* cdm_context,
-              const CdmAttachedCB& cdm_attached_cb) final;
-  void Flush(const base::Closure& flush_cb) final;
-  void StartPlayingFrom(base::TimeDelta time) final;
-  void SetPlaybackRate(double playback_rate) final;
-  void SetVolume(float volume) final;
-  base::TimeDelta GetMediaTime() final;
-
- private:
-  friend class RemoteRendererImplTest;
-
-  enum State {
-    STATE_UNINITIALIZED,
-    STATE_CREATE_PIPE,
-    STATE_ACQUIRING,
-    STATE_INITIALIZING,
-    STATE_FLUSHING,
-    STATE_PLAYING,
-    STATE_ERROR
-  };
-
-  // Callback when attempting to establish data pipe. Runs on media thread only.
-  void OnDataPipeCreated(mojom::RemotingDataStreamSenderPtrInfo audio,
-                         mojom::RemotingDataStreamSenderPtrInfo video,
-                         mojo::ScopedDataPipeProducerHandle audio_handle,
-                         mojo::ScopedDataPipeProducerHandle video_handle,
-                         int audio_rpc_handle,
-                         int video_rpc_handle);
-
-  // Callback function when RPC message is received. Runs on media thread only.
-  void OnReceivedRpc(std::unique_ptr<remoting::pb::RpcMessage> message);
-
-  // Function to post task to main thread in order to send RPC message.
-  void SendRpcToRemote(std::unique_ptr<remoting::pb::RpcMessage> message);
-
-  // Functions when RPC message is received.
-  void AcquireRendererDone(std::unique_ptr<remoting::pb::RpcMessage> message);
-  void InitializeCallback(std::unique_ptr<remoting::pb::RpcMessage> message);
-  void FlushUntilCallback();
-  void SetCdmCallback(std::unique_ptr<remoting::pb::RpcMessage> message);
-  void OnTimeUpdate(std::unique_ptr<remoting::pb::RpcMessage> message);
-  void OnBufferingStateChange(
-      std::unique_ptr<remoting::pb::RpcMessage> message);
-  void OnVideoNaturalSizeChange(
-      std::unique_ptr<remoting::pb::RpcMessage> message);
-  void OnVideoOpacityChange(std::unique_ptr<remoting::pb::RpcMessage> message);
-  void OnStatisticsUpdate(std::unique_ptr<remoting::pb::RpcMessage> message);
-  void OnDurationChange(std::unique_ptr<remoting::pb::RpcMessage> message);
-
-  // Called to update the remoting interstitial. Update
-  // |interstitial_background_| if |background_image| is set.
-  void UpdateInterstitial(const base::Optional<SkBitmap>& background_image,
-                          const gfx::Size& canvas_size,
-                          RemotingInterstitialType interstitial_type);
-
-  // Called when |current_media_time_| is updated.
-  void OnMediaTimeUpdated();
-
-  // Called to update the |video_stats_queue_|.
-  void UpdateVideoStatsQueue(int video_frames_decoded,
-                             int video_frames_dropped);
-
-  // Called to clear all recent measurements history and schedule resuming after
-  // a stabilization period elapses.
-  void ResetMeasurements();
-
-  // Called when a fatal runtime error occurs. |stop_trigger| is the error code
-  // handed to the RemotingRendererController.
-  void OnFatalError(remoting::StopTrigger stop_trigger);
-
-  // Called periodically to measure the data flows from the
-  // DemuxerStreamAdapters and record this information in the metrics.
-  void MeasureAndRecordDataRates();
-
-  State state_;
-  const scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
-  const scoped_refptr<base::SingleThreadTaskRunner> media_task_runner_;
-
-  // Current renderer playback time information.
-  base::TimeDelta current_media_time_;
-  base::TimeDelta current_max_time_;
-  // Both |current_media_time_| and |current_max_time_| should be protected by
-  // lock because it can be accessed from both media and render main thread.
-  base::Lock time_lock_;
-
-  DemuxerStreamProvider* demuxer_stream_provider_;
-  media::RendererClient* client_;
-  std::unique_ptr<remoting::RemoteDemuxerStreamAdapter>
-      audio_demuxer_stream_adapter_;
-  std::unique_ptr<remoting::RemoteDemuxerStreamAdapter>
-      video_demuxer_stream_adapter_;
-
-  // Component to establish mojo remoting service on browser process.
-  const base::WeakPtr<RemotingRendererController> remoting_renderer_controller_;
-  // Broker class to process incoming and outgoing RPC message.
-  const base::WeakPtr<remoting::RpcBroker> rpc_broker_;
-  // RPC handle value for RemoteRendererImpl component.
-  const int rpc_handle_;
-
-  // RPC handle value for render on receiver endpoint.
-  int remote_renderer_handle_;
-
-  // Callbacks.
-  PipelineStatusCB init_workflow_done_callback_;
-  CdmAttachedCB cdm_attached_cb_;
-  base::Closure flush_cb_;
-
-  VideoRendererSink* const video_renderer_sink_;  // Outlives this class.
-  // The background image for remoting interstitial. When |this| is destructed,
-  // |interstitial_background_| will be paint to clear the cast messages on
-  // the interstitial.
-  SkBitmap interstitial_background_;
-  gfx::Size canvas_size_;
-
-  // Current playback rate.
-  double playback_rate_ = 0;
-
-  // Ignores updates until this time.
-  base::TimeTicks ignore_updates_until_time_;
-
-  // Indicates whether stats has been updated.
-  bool stats_updated_ = false;
-
-  // Stores all |current_media_time_| and the local time when updated in the
-  // moving time window. This is used to check whether the playback duration
-  // matches the update duration in the window.
-  std::deque<std::pair<base::TimeTicks, base::TimeDelta>> media_time_queue_;
-
-  // Stores all updates on the number of video frames decoded/dropped, and the
-  // local time when updated in the moving time window. This is used to check
-  // whether too many video frames were dropped.
-  std::deque<std::tuple<base::TimeTicks, int, int>> video_stats_queue_;
-
-  // The total number of frames decoded/dropped in the time window.
-  int sum_video_frames_decoded_ = 0;
-  int sum_video_frames_dropped_ = 0;
-
-  // Records the number of consecutive times that remoting playback was delayed.
-  int times_playback_delayed_ = 0;
-
-  // Records events and measurements of interest.
-  remoting::RendererMetricsRecorder metrics_recorder_;
-
-  // A timer that polls the RemoteDemuxerStreamAdapters periodically to measure
-  // the data flow rates for metrics.
-  base::RepeatingTimer data_flow_poll_timer_;
-
-  base::WeakPtrFactory<RemoteRendererImpl> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(RemoteRendererImpl);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_REMOTING_REMOTE_RENDERER_IMPL_H_