1 /* 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef API_VIDEO_VIDEO_SINK_INTERFACE_H_ 12 #define API_VIDEO_VIDEO_SINK_INTERFACE_H_ 13 14 #include "absl/types/optional.h" 15 #include "api/video_track_source_constraints.h" 16 #include "rtc_base/checks.h" 17 18 namespace rtc { 19 20 template <typename VideoFrameT> 21 class VideoSinkInterface { 22 public: 23 virtual ~VideoSinkInterface() = default; 24 25 virtual void OnFrame(const VideoFrameT& frame) = 0; 26 27 // Should be called by the source when it discards the frame due to rate 28 // limiting. OnDiscardedFrame()29 virtual void OnDiscardedFrame() {} 30 31 // Called on the network thread when video constraints change. 32 // TODO(crbug/1255737): make pure virtual once downstream project adapts. OnConstraintsChanged(const webrtc::VideoTrackSourceConstraints & constraints)33 virtual void OnConstraintsChanged( 34 const webrtc::VideoTrackSourceConstraints& constraints) {} 35 }; 36 37 } // namespace rtc 38 39 #endif // API_VIDEO_VIDEO_SINK_INTERFACE_H_ 40