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| 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 WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ |
| 12 #define WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ |
| 13 |
| 14 #include "webrtc/media/base/videosinkinterface.h" |
| 15 #include "webrtc/base/callback.h" |
| 16 |
| 17 namespace rtc { |
| 18 |
| 19 // VideoSinkWants is used for notifying the source of properties a video frame |
| 20 // should have when it is delivered to a certain sink. |
| 21 struct VideoSinkWants { |
| 22 bool operator==(const VideoSinkWants& rh) const { |
| 23 return rotation_applied == rh.rotation_applied; |
| 24 } |
| 25 bool operator!=(const VideoSinkWants& rh) const { return !operator==(rh); } |
| 26 |
| 27 // Tells the source whether the sink wants frames with rotation applied. |
| 28 // By default, the rotation is applied by the source. |
| 29 bool rotation_applied = true; |
| 30 }; |
| 31 |
| 32 template <typename VideoFrameT> |
| 33 class VideoSourceInterface { |
| 34 public: |
| 35 virtual void AddOrUpdateSink(VideoSinkInterface<VideoFrameT>* sink, |
| 36 const VideoSinkWants& wants) = 0; |
| 37 // RemoveSink must guarantee that at the time the method returns, |
| 38 // there is no current and no future calls to VideoSinkInterface::OnFrame. |
| 39 virtual void RemoveSink(VideoSinkInterface<VideoFrameT>* sink) = 0; |
| 40 |
| 41 protected: |
| 42 virtual ~VideoSourceInterface() {} |
| 43 }; |
| 44 |
| 45 } // namespace rtc |
| 46 #endif // WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ |
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