|  | /* | 
|  | *  Copyright (c) 2020 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 COMMON_VIDEO_FRAME_COUNTS_H_ | 
|  | #define COMMON_VIDEO_FRAME_COUNTS_H_ | 
|  |  | 
|  | #include <cstdint> | 
|  |  | 
|  | namespace webrtc { | 
|  |  | 
|  | struct FrameCounts { | 
|  | FrameCounts() : key_frames(0), delta_frames(0) {} | 
|  | int key_frames; | 
|  | int delta_frames; | 
|  | }; | 
|  |  | 
|  | // Callback, used to notify an observer whenever frame counts have been updated. | 
|  | class FrameCountObserver { | 
|  | public: | 
|  | virtual ~FrameCountObserver() {} | 
|  | virtual void FrameCountUpdated(const FrameCounts& frame_counts, | 
|  | uint32_t ssrc) = 0; | 
|  | }; | 
|  |  | 
|  | }  // namespace webrtc | 
|  |  | 
|  | #endif  // COMMON_VIDEO_FRAME_COUNTS_H_ |