1 /* 2 * Copyright 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 PC_VIDEO_TRACK_SOURCE_H_ 12 #define PC_VIDEO_TRACK_SOURCE_H_ 13 14 #include "absl/types/optional.h" 15 #include "api/media_stream_interface.h" 16 #include "api/notifier.h" 17 #include "api/sequence_checker.h" 18 #include "api/video/recordable_encoded_frame.h" 19 #include "api/video/video_frame.h" 20 #include "api/video/video_sink_interface.h" 21 #include "api/video/video_source_interface.h" 22 #include "media/base/media_channel.h" 23 #include "rtc_base/system/rtc_export.h" 24 25 namespace webrtc { 26 27 // VideoTrackSource is a convenience base class for implementations of 28 // VideoTrackSourceInterface. 29 class RTC_EXPORT VideoTrackSource : public Notifier<VideoTrackSourceInterface> { 30 public: 31 explicit VideoTrackSource(bool remote); 32 void SetState(SourceState new_state); 33 state()34 SourceState state() const override { return state_; } remote()35 bool remote() const override { return remote_; } 36 is_screencast()37 bool is_screencast() const override { return false; } needs_denoising()38 absl::optional<bool> needs_denoising() const override { 39 return absl::nullopt; 40 } 41 GetStats(Stats * stats)42 bool GetStats(Stats* stats) override { return false; } 43 44 void AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink, 45 const rtc::VideoSinkWants& wants) override; 46 void RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) override; 47 SupportsEncodedOutput()48 bool SupportsEncodedOutput() const override { return false; } GenerateKeyFrame()49 void GenerateKeyFrame() override {} AddEncodedSink(rtc::VideoSinkInterface<RecordableEncodedFrame> * sink)50 void AddEncodedSink( 51 rtc::VideoSinkInterface<RecordableEncodedFrame>* sink) override {} RemoveEncodedSink(rtc::VideoSinkInterface<RecordableEncodedFrame> * sink)52 void RemoveEncodedSink( 53 rtc::VideoSinkInterface<RecordableEncodedFrame>* sink) override {} 54 55 protected: 56 virtual rtc::VideoSourceInterface<VideoFrame>* source() = 0; 57 58 private: 59 SequenceChecker worker_thread_checker_; 60 SourceState state_; 61 const bool remote_; 62 }; 63 64 } // namespace webrtc 65 66 #endif // PC_VIDEO_TRACK_SOURCE_H_ 67