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

ppapi/proxy/media_stream_audio_track_resource.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright (c) 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_MEDIA_STREAM_VIDEO_TRACK_RESOURCE_H_
-#define PPAPI_PROXY_MEDIA_STREAM_VIDEO_TRACK_RESOURCE_H_
+#ifndef PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_
+#define PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_
 
 #include <map>
 
 #include "base/memory/ref_counted.h"
 #include "ppapi/proxy/media_stream_track_resource_base.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
-#include "ppapi/thunk/ppb_media_stream_video_track_api.h"
+#include "ppapi/thunk/ppb_media_stream_audio_track_api.h"
 
 namespace ppapi {
 namespace proxy {
 
-class VideoFrameResource;
+class AudioFrameResource;
 
-class PPAPI_PROXY_EXPORT MediaStreamVideoTrackResource
+class PPAPI_PROXY_EXPORT MediaStreamAudioTrackResource
     : public MediaStreamTrackResourceBase,
-      public thunk::PPB_MediaStreamVideoTrack_API {
+      public thunk::PPB_MediaStreamAudioTrack_API {
  public:
-  MediaStreamVideoTrackResource(Connection connection,
+  MediaStreamAudioTrackResource(Connection connection,
                                 PP_Instance instance,
                                 int pending_renderer_id,
                                 const std::string& id);
 
-  virtual ~MediaStreamVideoTrackResource();
+  virtual ~MediaStreamAudioTrackResource();
 
   // Resource overrides:
-  virtual thunk::PPB_MediaStreamVideoTrack_API*
-  AsPPB_MediaStreamVideoTrack_API() OVERRIDE;
+  virtual thunk::PPB_MediaStreamAudioTrack_API*
+  AsPPB_MediaStreamAudioTrack_API() OVERRIDE;
 
-  // PPB_MediaStreamVideoTrack_API overrides:
+  // PPB_MediaStreamAudioTrack_API overrides:
   virtual PP_Var GetId() OVERRIDE;
   virtual PP_Bool HasEnded() OVERRIDE;
-  virtual int32_t Configure(uint32_t max_buffered_frames) OVERRIDE;
+  virtual int32_t Configure(uint32_t samples_per_frame,
+                            uint32_t max_buffered_frames) OVERRIDE;
   virtual int32_t GetFrame(
       PP_Resource* frame,
       scoped_refptr<TrackedCallback> callback) OVERRIDE;
   virtual int32_t RecycleFrame(PP_Resource frame) OVERRIDE;
   virtual void Close() OVERRIDE;
 
   // MediaStreamFrameBuffer::Delegate overrides:
   virtual void OnNewFrameEnqueued() OVERRIDE;
 
  private:
-  PP_Resource GetVideoFrame();
+  PP_Resource GetAudioFrame();
 
   void ReleaseFrames();
 
   // Allocated frame resources by |GetFrame()|.
-  typedef std::map<PP_Resource, scoped_refptr<VideoFrameResource> > FrameMap;
+  typedef std::map<PP_Resource, scoped_refptr<AudioFrameResource> > FrameMap;
   FrameMap frames_;
 
   PP_Resource* get_frame_output_;
 
   scoped_refptr<TrackedCallback> get_frame_callback_;
 
-  DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoTrackResource);
+  DISALLOW_COPY_AND_ASSIGN(MediaStreamAudioTrackResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
-#endif  // PPAPI_PROXY_MEDIA_STREAM_VIDEO_TRACK_RESOURCE_H_
+#endif  // PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_