09f5713a6b
This is a reland of 4bc7223cf0775737a615c677b82c78e49a6a8a2c Original change's description: > Move VideoTrackSourceProxy creation into VideoTrack. > > This CL contains a part of a previously reviewed, landed, reverted, > relanded and re-reverted CL: > https://webrtc-review.googlesource.com/c/src/+/250180 > > Bug: webrtc:13540 > Change-Id: Id6df8da5ff61e3ec90d0b3f3d828e8f670d4931b > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/251860 > Reviewed-by: Harald Alvestrand <hta@webrtc.org> > Auto-Submit: Tomas Gunnarsson <tommi@webrtc.org> > Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org> > Cr-Commit-Position: refs/heads/main@{#36025} Bug: webrtc:13540 Change-Id: I81df66daa40c59ab0b8677d7065f1703f071a10a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/252041 Reviewed-by: Sergey Silkin <ssilkin@webrtc.org> Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36047}
85 lines
3.1 KiB
C++
85 lines
3.1 KiB
C++
/*
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* Copyright 2012 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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#ifndef PC_VIDEO_TRACK_H_
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#define PC_VIDEO_TRACK_H_
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#include <string>
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#include "api/media_stream_interface.h"
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#include "api/media_stream_track.h"
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#include "api/scoped_refptr.h"
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#include "api/sequence_checker.h"
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#include "api/video/video_frame.h"
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#include "api/video/video_sink_interface.h"
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#include "api/video/video_source_interface.h"
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#include "media/base/video_source_base.h"
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#include "rtc_base/system/no_unique_address.h"
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#include "pc/video_track_source_proxy.h"
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#include "rtc_base/thread.h"
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#include "rtc_base/thread_annotations.h"
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namespace webrtc {
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// TODO(tommi): Instead of inheriting from `MediaStreamTrack<>`, implement the
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// properties directly in this class. `MediaStreamTrack` doesn't guard against
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// conflicting access, so we'd need to override those methods anyway in this
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// class in order to make sure things are correctly checked.
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class VideoTrack : public MediaStreamTrack<VideoTrackInterface>,
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public rtc::VideoSourceBaseGuarded,
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public ObserverInterface {
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public:
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static rtc::scoped_refptr<VideoTrack> Create(
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const std::string& label,
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VideoTrackSourceInterface* source,
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rtc::Thread* worker_thread);
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void AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink,
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const rtc::VideoSinkWants& wants) override;
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void RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) override;
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void RequestRefreshFrame() override;
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VideoTrackSourceInterface* GetSource() const override;
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ContentHint content_hint() const override;
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void set_content_hint(ContentHint hint) override;
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bool set_enabled(bool enable) override;
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bool enabled() const override;
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MediaStreamTrackInterface::TrackState state() const override;
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std::string kind() const override;
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protected:
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VideoTrack(
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const std::string& id,
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rtc::scoped_refptr<
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VideoTrackSourceProxyWithInternal<VideoTrackSourceInterface>> source,
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rtc::Thread* worker_thread);
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~VideoTrack();
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private:
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// Implements ObserverInterface. Observes `video_source_` state.
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void OnChanged() override;
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RTC_NO_UNIQUE_ADDRESS webrtc::SequenceChecker signaling_thread_;
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rtc::Thread* const worker_thread_;
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const rtc::scoped_refptr<
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VideoTrackSourceProxyWithInternal<VideoTrackSourceInterface>>
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video_source_;
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ContentHint content_hint_ RTC_GUARDED_BY(&signaling_thread_);
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// Cached `enabled` state for the worker thread. This is kept in sync with
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// the state maintained on the signaling thread via set_enabled() but can
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// be queried without blocking on the worker thread by callers that don't
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// use an api proxy to call the `enabled()` method.
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bool enabled_w_ RTC_GUARDED_BY(worker_thread_) = true;
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};
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} // namespace webrtc
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#endif // PC_VIDEO_TRACK_H_
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