Add video-rendering to mojo media pipeline.

media/renderers/video_renderer_impl.h

 // Copyright 2013 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_RENDERERS_VIDEO_RENDERER_IMPL_H_
 #define MEDIA_RENDERERS_VIDEO_RENDERER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 50 matching lines @@
       GpuVideoAcceleratorFactories* gpu_factories,
       const scoped_refptr<MediaLog>& media_log);
   ~VideoRendererImpl() override;
 
   // VideoRenderer implementation.
   void Initialize(DemuxerStream* stream,
                   const PipelineStatusCB& init_cb,
                   CdmContext* cdm_context,
                   const StatisticsCB& statistics_cb,
                   const BufferingStateCB& buffering_state_cb,
+                  const NaturalSizeChangedCB& natural_size_changed_cb,
                   const base::Closure& ended_cb,
                   const PipelineStatusCB& error_cb,
                   const TimeSource::WallClockTimeCB& wall_clock_time_cb,
                   const base::Closure& waiting_for_decryption_key_cb) override;
   void Flush(const base::Closure& callback) override;
   void StartPlayingFrom(base::TimeDelta timestamp) override;
   void OnTimeStateChanged(bool time_progressing) override;
 
   void SetTickClockForTesting(scoped_ptr<base::TickClock> tick_clock);
   void SetGpuMemoryBufferVideoForTesting(
@@ skipping 143 matching lines @@
 
   BufferingState buffering_state_;
 
   // Playback operation callbacks.
   base::Closure flush_cb_;
 
   // Event callbacks.
   PipelineStatusCB init_cb_;
   StatisticsCB statistics_cb_;
   BufferingStateCB buffering_state_cb_;
+  NaturalSizeChangedCB natural_size_changed_cb_;
   base::Closure ended_cb_;
   PipelineStatusCB error_cb_;
   TimeSource::WallClockTimeCB wall_clock_time_cb_;
 
   base::TimeDelta start_timestamp_;
 
   // Keeps track of the number of frames decoded and dropped since the
   // last call to |statistics_cb_|. These must be accessed under lock.
   int frames_decoded_;
   int frames_dropped_;
@@ skipping 16 matching lines @@
   // Indicates that Render() should only render the first frame and then request
   // that the sink be stopped.  |posted_maybe_stop_after_first_paint_| is used
   // to avoid repeated task posts.
   bool render_first_frame_and_stop_;
   bool posted_maybe_stop_after_first_paint_;
 
   // Memory usage of |algorithm_| recorded during the last UpdateStats_Locked()
   // call.
   int64_t last_video_memory_usage_;
 
+  // Tracks video natural size to detect and notify upstream of any changes.
+  gfx::Size last_frame_natural_size_;
+
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<VideoRendererImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoRendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_RENDERERS_VIDEO_RENDERER_IMPL_H_