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| 1 /* | 1 /* |
| 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ | 9 */ |
| 10 | 10 |
| 11 #ifndef WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_ | 11 #ifndef WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_ |
| 12 #define WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_ | 12 #define WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_ |
| 13 | 13 |
| 14 #include <memory> | 14 #include <memory> |
| 15 #include <utility> | 15 #include <utility> |
| 16 #include <vector> | 16 #include <vector> |
| 17 | 17 |
| 18 #include "webrtc/base/criticalsection.h" | 18 #include "webrtc/base/criticalsection.h" |
| 19 #include "webrtc/base/thread_checker.h" | 19 #include "webrtc/base/thread_checker.h" |
| 20 #include "webrtc/media/base/videoframe.h" | |
| 21 #include "webrtc/media/base/videosinkinterface.h" | 20 #include "webrtc/media/base/videosinkinterface.h" |
| 22 #include "webrtc/media/base/videosourcebase.h" | 21 #include "webrtc/media/base/videosourcebase.h" |
| 23 #include "webrtc/media/engine/webrtcvideoframe.h" | 22 #include "webrtc/video_frame.h" |
| 24 | 23 |
| 25 namespace rtc { | 24 namespace rtc { |
| 26 | 25 |
| 27 // VideoBroadcaster broadcast video frames to sinks and combines | 26 // VideoBroadcaster broadcast video frames to sinks and combines |
| 28 // VideoSinkWants from its sinks. It does that by implementing | 27 // VideoSinkWants from its sinks. It does that by implementing |
| 29 // rtc::VideoSourceInterface and rtc::VideoSinkInterface. | 28 // rtc::VideoSourceInterface and rtc::VideoSinkInterface. |
| 30 // Sinks must be added and removed on one and only one thread. | 29 // Sinks must be added and removed on one and only one thread. |
| 31 // Video frames can be broadcasted on any thread. I.e VideoBroadcaster::OnFrame | 30 // Video frames can be broadcasted on any thread. I.e VideoBroadcaster::OnFrame |
| 32 // can be called on any thread. | 31 // can be called on any thread. |
| 33 class VideoBroadcaster : public VideoSourceBase, | 32 class VideoBroadcaster : public VideoSourceBase, |
| 34 public VideoSinkInterface<cricket::VideoFrame> { | 33 public VideoSinkInterface<webrtc::VideoFrame> { |
| 35 public: | 34 public: |
| 36 VideoBroadcaster(); | 35 VideoBroadcaster(); |
| 37 void AddOrUpdateSink(VideoSinkInterface<cricket::VideoFrame>* sink, | 36 void AddOrUpdateSink(VideoSinkInterface<webrtc::VideoFrame>* sink, |
| 38 const VideoSinkWants& wants) override; | 37 const VideoSinkWants& wants) override; |
| 39 void RemoveSink(VideoSinkInterface<cricket::VideoFrame>* sink) override; | 38 void RemoveSink(VideoSinkInterface<webrtc::VideoFrame>* sink) override; |
| 40 | 39 |
| 41 // Returns true if the next frame will be delivered to at least one sink. | 40 // Returns true if the next frame will be delivered to at least one sink. |
| 42 bool frame_wanted() const; | 41 bool frame_wanted() const; |
| 43 | 42 |
| 44 // Returns VideoSinkWants a source is requested to fulfill. They are | 43 // Returns VideoSinkWants a source is requested to fulfill. They are |
| 45 // aggregated by all VideoSinkWants from all sinks. | 44 // aggregated by all VideoSinkWants from all sinks. |
| 46 VideoSinkWants wants() const; | 45 VideoSinkWants wants() const; |
| 47 | 46 |
| 48 // This method ensures that if a sink sets rotation_applied == true, | 47 // This method ensures that if a sink sets rotation_applied == true, |
| 49 // it will never receive a frame with pending rotation. Our caller | 48 // it will never receive a frame with pending rotation. Our caller |
| 50 // may pass in frames without precise synchronization with changes | 49 // may pass in frames without precise synchronization with changes |
| 51 // to the VideoSinkWants. | 50 // to the VideoSinkWants. |
| 52 void OnFrame(const cricket::VideoFrame& frame) override; | 51 void OnFrame(const webrtc::VideoFrame& frame) override; |
| 53 | 52 |
| 54 protected: | 53 protected: |
| 55 void UpdateWants() EXCLUSIVE_LOCKS_REQUIRED(sinks_and_wants_lock_); | 54 void UpdateWants() EXCLUSIVE_LOCKS_REQUIRED(sinks_and_wants_lock_); |
| 56 const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& GetBlackFrameBuffer( | 55 const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& GetBlackFrameBuffer( |
| 57 int width, int height) | 56 int width, int height) |
| 58 EXCLUSIVE_LOCKS_REQUIRED(sinks_and_wants_lock_); | 57 EXCLUSIVE_LOCKS_REQUIRED(sinks_and_wants_lock_); |
| 59 | 58 |
| 60 ThreadChecker thread_checker_; | 59 ThreadChecker thread_checker_; |
| 61 rtc::CriticalSection sinks_and_wants_lock_; | 60 rtc::CriticalSection sinks_and_wants_lock_; |
| 62 | 61 |
| 63 VideoSinkWants current_wants_ GUARDED_BY(sinks_and_wants_lock_); | 62 VideoSinkWants current_wants_ GUARDED_BY(sinks_and_wants_lock_); |
| 64 rtc::scoped_refptr<webrtc::VideoFrameBuffer> black_frame_buffer_; | 63 rtc::scoped_refptr<webrtc::VideoFrameBuffer> black_frame_buffer_; |
| 65 }; | 64 }; |
| 66 | 65 |
| 67 } // namespace rtc | 66 } // namespace rtc |
| 68 | 67 |
| 69 #endif // WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_ | 68 #endif // WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_ |
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