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/*
* 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<VideoTrackSourceInterface> {
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<bool> needs_denoising() const override {
return absl::nullopt;
}
bool GetStats(Stats* stats) override { return false; }
void AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink,
const rtc::VideoSinkWants& wants) override;
void RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) override;
bool SupportsEncodedOutput() const override { return false; }
void GenerateKeyFrame() override {}
void AddEncodedSink(
rtc::VideoSinkInterface<RecordableEncodedFrame>* sink) override {}
void RemoveEncodedSink(
rtc::VideoSinkInterface<RecordableEncodedFrame>* sink) override {}
protected:
virtual rtc::VideoSourceInterface<VideoFrame>* source() = 0;
private:
RTC_NO_UNIQUE_ADDRESS SequenceChecker worker_thread_checker_;
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_
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