Implement client-side video stream support for WebRTC-based protocol.

remoting/protocol/webrtc_video_renderer_adapter.h

+// Copyright 2015 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 REMOTING_PROTOCOL_WEBRTC_VIDEO_RENDERER_ADAPTER_H_
+#define REMOTING_PROTOCOL_WEBRTC_VIDEO_RENDERER_ADAPTER_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}  // namespace base
+
+namespace webrtc {
+class DesktopFrame;
+}  // namespace webrtc
+
+namespace remoting {
+namespace protocol {
+
+class FrameConsumer;
+
+class WebrtcVideoRendererAdapter : public webrtc::VideoRendererInterface {
+ public:
+  WebrtcVideoRendererAdapter(
+      scoped_refptr<webrtc::MediaStreamInterface> media_stream,
+      FrameConsumer* frame_consumer);
+  ~WebrtcVideoRendererAdapter() override;
+
+  std::string label() const { return media_stream_->label(); }
+
+  // webrtc::VideoRendererInterface implementation.
+  void RenderFrame(const cricket::VideoFrame* frame) override;
+
+ private:
+  void DrawFrame(scoped_ptr<webrtc::DesktopFrame> frame);
+
+  scoped_refptr<webrtc::MediaStreamInterface> media_stream_;
+  FrameConsumer* frame_consumer_;
+  uint32_t output_format_fourcc_;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+
+  base::WeakPtrFactory<WebrtcVideoRendererAdapter> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebrtcVideoRendererAdapter);
+};
+
+}  // namespace remoting
+}  // namespace protocol
+
+#endif  // REMOTING_PROTOCOL_WEBRTC_VIDEO_RENDERER_ADAPTER_H_