[PPAPI] Pepper MediaStream API audio track implementation and example.

ppapi/proxy/audio_frame_resource.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 PPAPI_PROXY_VIDEO_FRAME_RESOURCE_H_
-#define PPAPI_PROXY_VIDEO_FRAME_RESOURCE_H_
+#ifndef PPAPI_PROXY_AUDIO_FRAME_RESOURCE_H_
+#define PPAPI_PROXY_AUDIO_FRAME_RESOURCE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/shared_impl/media_stream_frame.h"
 #include "ppapi/shared_impl/resource.h"
-#include "ppapi/thunk/ppb_video_frame_api.h"
+#include "ppapi/thunk/ppb_audio_frame_api.h"
 
 namespace ppapi {
 namespace proxy {
 
-class PPAPI_PROXY_EXPORT VideoFrameResource : public Resource,
-                                              public thunk::PPB_VideoFrame_API {
+class PPAPI_PROXY_EXPORT AudioFrameResource : public Resource,
+                                              public thunk::PPB_AudioFrame_API {
  public:
-  VideoFrameResource(PP_Instance instance,
+  AudioFrameResource(PP_Instance instance,
                      int32_t index,
                      MediaStreamFrame* frame);
 
-  virtual ~VideoFrameResource();
+  virtual ~AudioFrameResource();
 
   // PluginResource overrides:
-  virtual thunk::PPB_VideoFrame_API* AsPPB_VideoFrame_API() OVERRIDE;
+  virtual thunk::PPB_AudioFrame_API* AsPPB_AudioFrame_API() OVERRIDE;
 
-  // PPB_VideoFrame_API overrides:
+  // PPB_AudioFrame_API overrides:
   virtual PP_TimeDelta GetTimestamp() OVERRIDE;
   virtual void SetTimestamp(PP_TimeDelta timestamp) OVERRIDE;
-  virtual PP_VideoFrame_Format GetFormat() OVERRIDE;
-  virtual PP_Bool GetSize(PP_Size* size) OVERRIDE;
+  virtual PP_AudioFrame_SampleRate GetSampleRate() OVERRIDE;
+  virtual PP_AudioFrame_SampleSize GetSampleSize() OVERRIDE;
+  virtual uint32_t GetNumberOfChannels() OVERRIDE;
+  virtual uint32_t GetNumberOfSamples() OVERRIDE;
   virtual void* GetDataBuffer() OVERRIDE;
   virtual uint32_t GetDataBufferSize() OVERRIDE;
   virtual MediaStreamFrame* GetFrameBuffer();
   virtual int32_t GetFrameBufferIndex();
   virtual void Invalidate();
 
   // Frame index
   int32_t index_;
 
   MediaStreamFrame* frame_;
 
-  DISALLOW_COPY_AND_ASSIGN(VideoFrameResource);
+  DISALLOW_COPY_AND_ASSIGN(AudioFrameResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
-#endif  // PPAPI_PROXY_VIDEO_FRAME_RESOURCE_H_
+#endif  // PPAPI_PROXY_AUDIO_FRAME_RESOURCE_H_