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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.
#include "api/media_stream_interface.h"
#include "api/notifier.h"
#include "api/video/video_sink_interface.h"
#include "media/base/media_channel.h"
#include "rtc_base/system/rtc_export.h"
#include "rtc_base/thread_checker.h"
namespace webrtc {
// VideoTrackSource is a convenience base class for implementations of
// VideoTrackSourceInterface.
class RTC_EXPORT VideoTrackSource : public Notifier<VideoTrackSourceInterface> {
explicit VideoTrackSource(bool remote);
void SetState(SourceState new_state);
SourceState state() const override { 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;
virtual rtc::VideoSourceInterface<VideoFrame>* source() = 0;
rtc::ThreadChecker worker_thread_checker_;
SourceState state_;
const bool remote_;
} // namespace webrtc