[PPAPI][MediaStream] Support configure for video input.

content/renderer/pepper/pepper_media_stream_video_track_host.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 CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_
 
 #include "base/compiler_specific.h"
 #include "content/public/renderer/media_stream_video_sink.h"
 #include "content/renderer/pepper/pepper_media_stream_track_host_base.h"
 #include "media/base/video_frame.h"
+#include "ppapi/c/ppb_video_frame.h"
+#include "ppapi/shared_impl/media_stream_video_track_shared.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 #include "ui/gfx/size.h"
 
 namespace content {
 
 class PepperMediaStreamVideoTrackHost : public PepperMediaStreamTrackHostBase,
                                         public MediaStreamVideoSink {
  public:
   PepperMediaStreamVideoTrackHost(RendererPpapiHost* host,
                                   PP_Instance instance,
                                   PP_Resource resource,
                                   const blink::WebMediaStreamTrack& track);
 
  private:
   virtual ~PepperMediaStreamVideoTrackHost();
 
+  void InitBuffers();
+
   // PepperMediaStreamTrackHostBase overrides:
   virtual void OnClose() OVERRIDE;
 
   // MediaStreamVideoSink overrides:
   virtual void OnVideoFrame(
       const scoped_refptr<media::VideoFrame>& frame) OVERRIDE;
 
   // ResourceHost overrides:
   virtual void DidConnectPendingHostToResource() OVERRIDE;
 
+  // ResourceMessageHandler overrides:
+  virtual int32_t OnResourceMessageReceived(
+      const IPC::Message& msg,
+      ppapi::host::HostMessageContext* context) OVERRIDE;
+
+  // Message handlers:
+  int32_t OnHostMsgConfigure(
+      ppapi::host::HostMessageContext* context,
+      const ppapi::MediaStreamVideoTrackShared::Attributes& attributes);
+
   blink::WebMediaStreamTrack track_;
 
   // True if it has been added to |blink::WebMediaStreamTrack| as a sink.
   bool connected_;
 
+  // number of buffers

[yzshen1, 2014/02/13 19:23:26]

Capital initial and trailing period please.

[Peng, 2014/02/13 21:28:34]

Done.

+  int32_t buffers_;
+
   // Frame size.
   gfx::Size frame_size_;
 
-  // Frame format.
-  media::VideoFrame::Format frame_format_;
+  // Plugin specified frame size.
+  gfx::Size plugin_frame_size_;
+
+  // Format of frames which are received from MediaStreamVideoSink.
+  PP_VideoFrame_Format frame_format_;
+
+  // Plugin specified frame format.
+  PP_VideoFrame_Format plugin_frame_format_;
 
   // The size of frame pixels in bytes.
   uint32_t frame_data_size_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperMediaStreamVideoTrackHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_