[WIP][PPAPI] Implement MediaStreamVideoTrackResource.

ppapi/proxy/media_stream_video_track_resource.h

+// Copyright (c) 2012 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_
+
+#include "ppapi/proxy/io_stream_resource.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/proxy/ppapi_proxy_export.h"
+#include "ppapi/shared_impl/proxy_lock.h"
+#include "ppapi/thunk/ppb_media_stream_video_track_api.h"
+
+namespace ppapi {
+namespace proxy {
+
+class VideoFrameResource;
+
+class PPAPI_PROXY_EXPORT MediaStreamVideoTrackResource
+    : public IOStreamResource,
+      public ppapi::thunk::PPB_MediaStreamVideoTrack_API{
+ public:
+  MediaStreamVideoTrackResource(Connection connection,
+                                PP_Instance instance,
+                                int pending_renderer_id,
+                                const std::string& id);
+
+  virtual ~MediaStreamVideoTrackResource();
+
+  // Resource implementation.
+  virtual thunk::PPB_MediaStreamVideoTrack_API* AsPPB_MediaStreamVideoTrack_API(
+      ) OVERRIDE;
+
+  // PPB_MediaStreamVideoTrack_API implementation.
+  virtual PP_Var GetId() OVERRIDE;
+  virtual PP_Bool HasEnded() OVERRIDE;
+  virtual int32_t Configure(uint32_t max_buffered_frames) OVERRIDE;
+  virtual int32_t GetFrame(
+      PP_Resource* frame,
+      const scoped_refptr<ppapi::TrackedCallback>& callback) OVERRIDE;
+  virtual int32_t RecycleFrame(PP_Resource frame) OVERRIDE;
+  virtual int32_t Close() OVERRIDE;
+
+  virtual void OnReplyReceived(const proxy::ResourceMessageReplyParams& params,
+                               const IPC::Message& msg) OVERRIDE;
+
+ protected:
+  virtual void OnMoreBufferAvailable() OVERRIDE;
+
+ private:
+
+  PP_Resource CreateCurrentFrame();
+
+  std::string id_;
+
+  VideoFrameResource* current_frame_;
+
+  PP_Resource* get_frame_output_;
+  scoped_refptr<TrackedCallback> get_frame_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoTrackResource);
+};
+
+}  // namespace proxy
+}  // namespace ppapi
+
+#endif  // PPAPI_PROXY_MEDIA_STREAM_VIDEO_TRACK_RESOURCE_H_