Add VideoTrackSource implementation.

webrtc/api/videocapturertracksource.h

 /*
  *  Copyright 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_API_VIDEOCAPTURERTRACKSOURCE_H_
 #define WEBRTC_API_VIDEOCAPTURERTRACKSOURCE_H_
 
-#include <list>
-
 #include "webrtc/api/mediastreaminterface.h"
-#include "webrtc/api/notifier.h"
-#include "webrtc/api/videosourceinterface.h"
-#include "webrtc/api/videotrackrenderers.h"
+#include "webrtc/api/videotracksource.h"
 #include "webrtc/base/asyncinvoker.h"
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/base/sigslot.h"
-#include "webrtc/media/base/videosinkinterface.h"
 #include "webrtc/media/base/videocapturer.h"
 #include "webrtc/media/base/videocommon.h"
 
 // VideoCapturerTrackSource implements VideoTrackSourceInterface. It owns a
 // cricket::VideoCapturer and make sure the camera is started at a resolution
 // that honors the constraints.
 // The state is set depending on the result of starting the capturer.
 // If the constraint can't be met or the capturer fails to start, the state
 // transition to kEnded, otherwise it transitions to kLive.
 namespace webrtc {
 
 class MediaConstraintsInterface;
 
-class VideoCapturerTrackSource : public Notifier<VideoTrackSourceInterface>,
+class VideoCapturerTrackSource : public VideoTrackSource,
                                  public sigslot::has_slots<> {
  public:
   // Creates an instance of VideoCapturerTrackSource.
   // VideoCapturerTrackSource take ownership of |capturer|.
   // |constraints| can be NULL and in that case the camera is opened using a
   // default resolution.
   static rtc::scoped_refptr<VideoTrackSourceInterface> Create(
       rtc::Thread* worker_thread,
       cricket::VideoCapturer* capturer,
       const webrtc::MediaConstraintsInterface* constraints,
       bool remote);
 
   static rtc::scoped_refptr<VideoTrackSourceInterface> Create(
       rtc::Thread* worker_thread,
       cricket::VideoCapturer* capturer,
       bool remote);
 
-  SourceState state() const override { return state_; }
-  bool remote() const override { return remote_; }
-
-  virtual const cricket::VideoOptions* options() const { return &options_; }
-
-  virtual cricket::VideoCapturer* GetVideoCapturer() {
+  cricket::VideoCapturer* GetVideoCapturer() override {
     return video_capturer_.get();
   }
 
+  bool is_screencast() const override {
+    return video_capturer_->IsScreencast();
+  }
+  bool needs_denoising() const override { return needs_denoising_; }
+
   void Stop() override;
   void Restart() override;
 
-  void AddOrUpdateSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink,
-                       const rtc::VideoSinkWants& wants) override;
-  void RemoveSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink) override;
-
  protected:
   VideoCapturerTrackSource(rtc::Thread* worker_thread,
                            cricket::VideoCapturer* capturer,
                            bool remote);
   virtual ~VideoCapturerTrackSource();
   void Initialize(const webrtc::MediaConstraintsInterface* constraints);
 
  private:
   void OnStateChange(cricket::VideoCapturer* capturer,
                      cricket::CaptureState capture_state);
-  void SetState(SourceState new_state);
 
   rtc::Thread* signaling_thread_;
-  rtc::Thread* worker_thread_;
   rtc::AsyncInvoker invoker_;
   rtc::scoped_ptr<cricket::VideoCapturer> video_capturer_;
   bool started_;
-  rtc::scoped_ptr<cricket::VideoRenderer> frame_input_;
-
   cricket::VideoFormat format_;
-  cricket::VideoOptions options_;
-  SourceState state_;
-  const bool remote_;
+  bool needs_denoising_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_VIDEOCAPTURERTRACKSOURCE_H_