Add framerate to VideoSinkWants and ability to signal on overuse

webrtc/test/vcm_capturer.h

 /*
  *  Copyright (c) 2013 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_TEST_VCM_CAPTURER_H_
 #define WEBRTC_TEST_VCM_CAPTURER_H_
 
+#include <memory>
+
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/base/scoped_ref_ptr.h"
 #include "webrtc/common_types.h"
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
 #include "webrtc/modules/video_capture/video_capture.h"
 #include "webrtc/test/video_capturer.h"
 
+namespace cricket {
+class VideoAdapter;
+}  // namespace cricket
+
 namespace webrtc {
 namespace test {
 
 class VcmCapturer
     : public VideoCapturer,
       public rtc::VideoSinkInterface<VideoFrame> {
  public:
   static VcmCapturer* Create(size_t width, size_t height, size_t target_fps);
   virtual ~VcmCapturer();
 
   void Start() override;
   void Stop() override;
   void AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink,
                        const rtc::VideoSinkWants& wants) override;
   void RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) override;
 
   void OnFrame(const VideoFrame& frame) override;
 
  private:
   VcmCapturer();
   bool Init(size_t width, size_t height, size_t target_fps);
   void Destroy();
 
   rtc::CriticalSection crit_;
   bool started_ GUARDED_BY(crit_);
   rtc::VideoSinkInterface<VideoFrame>* sink_ GUARDED_BY(crit_);
   rtc::scoped_refptr<VideoCaptureModule> vcm_;
   VideoCaptureCapability capability_;
+  std::unique_ptr<cricket::VideoAdapter> video_adpter_;
 };
 
 }  // test
 }  // webrtc
 
 #endif  // WEBRTC_TEST_VCM_CAPTURER_H_