84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
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/*
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* Copyright 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/api/videotrack.h"
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#include <string>
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namespace webrtc {
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const char MediaStreamTrackInterface::kVideoKind[] = "video";
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VideoTrack::VideoTrack(const std::string& label,
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VideoTrackSourceInterface* video_source)
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: MediaStreamTrack<VideoTrackInterface>(label),
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video_source_(video_source) {
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worker_thread_checker_.DetachFromThread();
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video_source_->RegisterObserver(this);
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}
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VideoTrack::~VideoTrack() {
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video_source_->UnregisterObserver(this);
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}
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std::string VideoTrack::kind() const {
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return kVideoKind;
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}
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// AddOrUpdateSink and RemoveSink should be called on the worker
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// thread.
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void VideoTrack::AddOrUpdateSink(
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rtc::VideoSinkInterface<cricket::VideoFrame>* sink,
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const rtc::VideoSinkWants& wants) {
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RTC_DCHECK(worker_thread_checker_.CalledOnValidThread());
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VideoSourceBase::AddOrUpdateSink(sink, wants);
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rtc::VideoSinkWants modified_wants = wants;
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modified_wants.black_frames = !enabled();
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video_source_->AddOrUpdateSink(sink, modified_wants);
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}
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void VideoTrack::RemoveSink(
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rtc::VideoSinkInterface<cricket::VideoFrame>* sink) {
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RTC_DCHECK(worker_thread_checker_.CalledOnValidThread());
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VideoSourceBase::RemoveSink(sink);
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video_source_->RemoveSink(sink);
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}
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bool VideoTrack::set_enabled(bool enable) {
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RTC_DCHECK(signaling_thread_checker_.CalledOnValidThread());
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for (auto& sink_pair : sink_pairs()) {
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rtc::VideoSinkWants modified_wants = sink_pair.wants;
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modified_wants.black_frames = !enable;
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// video_source_ is a proxy object, marshalling the call to the
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// worker thread.
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video_source_->AddOrUpdateSink(sink_pair.sink, modified_wants);
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}
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return MediaStreamTrack<VideoTrackInterface>::set_enabled(enable);
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}
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void VideoTrack::OnChanged() {
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RTC_DCHECK(signaling_thread_checker_.CalledOnValidThread());
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if (video_source_->state() == MediaSourceInterface::kEnded) {
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set_state(kEnded);
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} else {
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set_state(kLive);
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}
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}
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rtc::scoped_refptr<VideoTrack> VideoTrack::Create(
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const std::string& id,
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VideoTrackSourceInterface* source) {
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rtc::RefCountedObject<VideoTrack>* track =
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new rtc::RefCountedObject<VideoTrack>(id, source);
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return track;
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}
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} // namespace webrtc
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