Interpolate media time for mojo rendering pipeline.

media/mojo/services/mojo_renderer_service.h

 // Copyright 2014 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_MOJO_SERVICES_MOJO_RENDERER_SERVICE_H_
 #define MEDIA_MOJO_SERVICES_MOJO_RENDERER_SERVICE_H_
 
 #include <stdint.h>
 #include <memory>
 
@@ skipping 69 matching lines @@
 
   // Called when the DemuxerStreamProviderShim is ready to go (has a config,
   // pipe handle, etc) and can be handed off to a renderer for use.
   void OnStreamReady(const base::Callback<void(bool)>& callback);
 
   // Called when |audio_renderer_| initialization has completed.
   void OnRendererInitializeDone(const base::Callback<void(bool)>& callback,
                                 PipelineStatus status);
 
   // Periodically polls the media time from the renderer and notifies the client
-  // if the media time has changed since the last update.  If |force| is true,
-  // the client is notified even if the time is unchanged.
+  // if the media time has changed since the last update.
+  // If |force| is true, the client is notified even if the time is unchanged.
+  // If |range| is true, an interpolation time range is reported.
   void UpdateMediaTime(bool force);
   void CancelPeriodicMediaTimeUpdates();
   void SchedulePeriodicMediaTimeUpdates();
 
   // Callback executed once Flush() completes.
   void OnFlushCompleted(const FlushCallback& callback);
 
   // Callback executed once SetCdm() completes.
   void OnCdmAttached(scoped_refptr<MediaKeys> cdm,
                      const base::Callback<void(bool)>& callback,
                      bool success);
 
   mojo::StrongBinding<mojom::Renderer> binding_;
 
   base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context_;
 
   State state_;
+  double playback_rate_;
 
   std::unique_ptr<DemuxerStreamProvider> stream_provider_;
 
   base::RepeatingTimer time_update_timer_;
   base::TimeDelta last_media_time_;
 
   mojom::RendererClientPtr client_;
 
   // Hold a reference to the CDM set on the |renderer_| so that the CDM won't be
   // destructed while the |renderer_| is still using it.
@@ skipping 12 matching lines @@
 
   base::WeakPtr<MojoRendererService> weak_this_;
   base::WeakPtrFactory<MojoRendererService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoRendererService);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_RENDERER_SERVICE_H_