| /* | 
 |  *  Copyright (c) 2017 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 EXAMPLES_UNITYPLUGIN_VIDEO_OBSERVER_H_ | 
 | #define EXAMPLES_UNITYPLUGIN_VIDEO_OBSERVER_H_ | 
 |  | 
 | #include <mutex> | 
 |  | 
 | #include "api/media_stream_interface.h" | 
 | #include "api/video/video_sink_interface.h" | 
 | #include "examples/unityplugin/unity_plugin_apis.h" | 
 |  | 
 | class VideoObserver : public rtc::VideoSinkInterface<webrtc::VideoFrame> { | 
 |  public: | 
 |   VideoObserver() {} | 
 |   ~VideoObserver() {} | 
 |   void SetVideoCallback(I420FRAMEREADY_CALLBACK callback); | 
 |  | 
 |  protected: | 
 |   // VideoSinkInterface implementation | 
 |   void OnFrame(const webrtc::VideoFrame& frame) override; | 
 |  | 
 |  private: | 
 |   I420FRAMEREADY_CALLBACK OnI420FrameReady = nullptr; | 
 |   std::mutex mutex; | 
 | }; | 
 |  | 
 | #endif  // EXAMPLES_UNITYPLUGIN_VIDEO_OBSERVER_H_ |