[Chromecast] Upgrade to new CMA backend API

chromecast/media/cma/pipeline/video_pipeline_impl.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 CHROMECAST_MEDIA_CMA_BASE_VIDEO_PIPELINE_IMPL_H_
 #define CHROMECAST_MEDIA_CMA_BASE_VIDEO_PIPELINE_IMPL_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
-#include "chromecast/media/cma/pipeline/video_pipeline.h"
 #include "chromecast/media/cma/pipeline/video_pipeline_client.h"
+#include "chromecast/public/media/media_pipeline_backend.h"
 #include "chromecast/public/media/stream_id.h"
-#include "chromecast/public/media/video_pipeline_device.h"
 
 namespace media {
 class AudioDecoderConfig;
 class VideoDecoderConfig;
 }
 
 namespace chromecast {
 struct Size;
 namespace media {
 class AvPipelineImpl;
 class BrowserCdmCast;
 class BufferingState;
 class CodedFrameProvider;
-class VideoPipelineDevice;
 
-class VideoPipelineImpl : public VideoPipeline {
+class VideoPipelineImpl {
  public:
-  // |buffering_controller| can be NULL.
-  explicit VideoPipelineImpl(VideoPipelineDevice* video_device);
-  ~VideoPipelineImpl() override;
+  VideoPipelineImpl(MediaPipelineBackend::VideoDecoder* decoder,
+                    const VideoPipelineClient& client);
+  ~VideoPipelineImpl();
 
   // Input port of the pipeline.
   void SetCodedFrameProvider(scoped_ptr<CodedFrameProvider> frame_provider);
 
   // Provide the CDM to use to decrypt samples.
   void SetCdm(BrowserCdmCast* media_keys);
 
   // Functions to control the state of the audio pipeline.
   void Initialize(
       const std::vector<::media::VideoDecoderConfig>& configs,
       scoped_ptr<CodedFrameProvider> frame_provider,
       const ::media::PipelineStatusCB& status_cb);
   bool StartPlayingFrom(base::TimeDelta time,
                         const scoped_refptr<BufferingState>& buffering_state);
   void Flush(const ::media::PipelineStatusCB& status_cb);
   void Stop();
 
   // Update the playback statistics for this video stream.
   void UpdateStatistics();
 
-  // VideoPipeline implementation.
-  void SetClient(const VideoPipelineClient& client) override;
+  void OnBufferPushed(MediaPipelineBackend::BufferStatus status);
+  void OnEndOfStream();
+  void OnError();
+  void OnNaturalSizeChanged(const Size& size);
 
  private:
   class DeviceClientImpl;
   friend class DeviceClientImpl;
 
   void OnFlushDone(const ::media::PipelineStatusCB& status_cb);
   void OnUpdateConfig(StreamId id,
                       const ::media::AudioDecoderConfig& audio_config,
                       const ::media::VideoDecoderConfig& video_config);
-  void OnNaturalSizeChanged(const Size& size);
 
-  VideoPipelineDevice* video_device_;
+  MediaPipelineBackend::VideoDecoder* video_decoder_;
 
   scoped_ptr<AvPipelineImpl> av_pipeline_impl_;
   VideoPipelineClient video_client_;
 
   ::media::PipelineStatistics previous_stats_;
 
   base::WeakPtr<VideoPipelineImpl> weak_this_;
   base::WeakPtrFactory<VideoPipelineImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoPipelineImpl);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_CMA_BASE_VIDEO_PIPELINE_IMPL_H_