CastExtension Impl for Chromoting Host

remoting/host/cast_video_capturer_adapter.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 REMOTING_HOST_CAST_VIDEO_CAPTURER_ADAPTER_H_
 #define REMOTING_HOST_CAST_VIDEO_CAPTURER_ADAPTER_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/timer/timer.h"
 #include "third_party/libjingle/source/talk/media/base/videocapturer.h"
 #include "third_party/webrtc/modules/desktop_capture/screen_capturer.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace webrtc {
 class DesktopFrame;
 }  // namespace webrtc
 
 namespace remoting {
 
 // This class controls the capture of video frames from the desktop and is used
 // to construct a VideoSource as part of the webrtc PeerConnection API.
-// CastVideoCapturerAdapter acts as an adapter between webrtc::ScreenCapturer
+// CastVideoCapturerAdapter acts as an adapter between webrtc::DesktopCapturer
 // and the cricket::VideoCapturer interface, which it implements. It is used
 // to construct a cricket::VideoSource for a PeerConnection, to capture frames
 // of the desktop. As indicated in the base implementation, Start() and Stop()
 // should be called on the same thread.
 class CastVideoCapturerAdapter : public cricket::VideoCapturer,
                                  public webrtc::DesktopCapturer::Callback {
  public:
   explicit CastVideoCapturerAdapter(
-      scoped_ptr<webrtc::ScreenCapturer> capturer);
+      scoped_ptr<webrtc::DesktopCapturer> capturer);
 
   virtual ~CastVideoCapturerAdapter();
 
   // webrtc::DesktopCapturer::Callback implementation.
   virtual webrtc::SharedMemory* CreateSharedMemory(size_t size) OVERRIDE;
   // Converts |frame| to a cricket::CapturedFrame and emits that via
   // SignalFrameCaptured for the base::VideoCapturer implementation to process.
   virtual void OnCaptureCompleted(webrtc::DesktopFrame* frame) OVERRIDE;
 
   // cricket::VideoCapturer implementation.
   virtual bool GetBestCaptureFormat(const cricket::VideoFormat& desired,
                                   cricket::VideoFormat* best_format) OVERRIDE;
   virtual cricket::CaptureState Start(
       const cricket::VideoFormat& capture_format) OVERRIDE;
   virtual bool Pause(bool pause) OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual bool IsRunning() OVERRIDE;
   virtual bool IsScreencast() const OVERRIDE;
   virtual bool GetPreferredFourccs(std::vector<uint32>* fourccs) OVERRIDE;
 
  private:
-  // Kicks off the next frame capture using |screen_capturer_|.
+  // Kicks off the next frame capture using |desktop_capturer_|.
   // The captured frame will be passed to OnCaptureCompleted().
   void CaptureNextFrame();
 
   // |thread_checker_| is bound to the peer connection worker thread.
   base::ThreadChecker thread_checker_;
 
   // Used to capture frames.
-  scoped_ptr<webrtc::ScreenCapturer> screen_capturer_;
+  scoped_ptr<webrtc::DesktopCapturer> desktop_capturer_;
 
   // Used to schedule periodic screen captures.
   scoped_ptr<base::RepeatingTimer<CastVideoCapturerAdapter> > capture_timer_;
 
   // Used to set the elapsed_time attribute of captured frames.
   base::TimeTicks start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(CastVideoCapturerAdapter);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CAST_VIDEO_CAPTURER_ADAPTER_H_