/* * Copyright 2016 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 PC_VIDEO_TRACK_SOURCE_H_ #define PC_VIDEO_TRACK_SOURCE_H_ #include "absl/types/optional.h" #include "api/media_stream_interface.h" #include "api/notifier.h" #include "api/sequence_checker.h" #include "api/video/recordable_encoded_frame.h" #include "api/video/video_frame.h" #include "api/video/video_sink_interface.h" #include "api/video/video_source_interface.h" #include "media/base/media_channel.h" #include "rtc_base/checks.h" #include "rtc_base/system/no_unique_address.h" #include "rtc_base/system/rtc_export.h" #include "rtc_base/thread_annotations.h" namespace webrtc { // VideoTrackSource is a convenience base class for implementations of // VideoTrackSourceInterface. class RTC_EXPORT VideoTrackSource : public Notifier { public: explicit VideoTrackSource(bool remote); void SetState(SourceState new_state); SourceState state() const override { RTC_DCHECK_RUN_ON(&signaling_thread_checker_); return state_; } bool remote() const override { return remote_; } bool is_screencast() const override { return false; } absl::optional needs_denoising() const override { return absl::nullopt; } bool GetStats(Stats* stats) override { return false; } void AddOrUpdateSink(rtc::VideoSinkInterface* sink, const rtc::VideoSinkWants& wants) override; void RemoveSink(rtc::VideoSinkInterface* sink) override; bool SupportsEncodedOutput() const override { return false; } void GenerateKeyFrame() override {} void AddEncodedSink( rtc::VideoSinkInterface* sink) override {} void RemoveEncodedSink( rtc::VideoSinkInterface* sink) override {} protected: virtual rtc::VideoSourceInterface* source() = 0; private: RTC_NO_UNIQUE_ADDRESS SequenceChecker worker_thread_checker_{ SequenceChecker::kDetached}; RTC_NO_UNIQUE_ADDRESS SequenceChecker signaling_thread_checker_; SourceState state_ RTC_GUARDED_BY(&signaling_thread_checker_); const bool remote_; }; } // namespace webrtc #endif // PC_VIDEO_TRACK_SOURCE_H_