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https://github.com/mollyim/webrtc.git
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c848268ab1
This CL is partly a test to see if there's an impact on binary size:
- Not a big difference for binaries (decrease): -776b to -4Kb
- For libraries (libwebrtc.a) it actually increases the size: +40Kb
Secondarily this CL is basically to introduce this pattern to the
code base. In terms of LOC, this makes things slightly more compact.
From:
class Foo {
public:
Foo() {
checker_.Detach();
}
private:
SequenceChecker checker_;
};
To:
class Foo {
public:
Foo() = default;
private:
SequenceChecker checker_{SequenceChecker::kDetached};
};
Bug: none
Change-Id: I59fc34ccea10847e13455a349851ce9a0af458e3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/299020
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39664}
93 lines
3.2 KiB
C++
93 lines
3.2 KiB
C++
/*
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* Copyright 2019 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_RTP_TRACK_SOURCE_H_
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#define PC_VIDEO_RTP_TRACK_SOURCE_H_
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#include <vector>
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#include "api/sequence_checker.h"
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#include "api/video/recordable_encoded_frame.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_broadcaster.h"
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#include "pc/video_track_source.h"
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#include "rtc_base/synchronization/mutex.h"
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#include "rtc_base/system/no_unique_address.h"
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#include "rtc_base/thread_annotations.h"
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namespace webrtc {
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// Video track source in use by VideoRtpReceiver
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class VideoRtpTrackSource : public VideoTrackSource {
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public:
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class Callback {
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public:
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virtual ~Callback() = default;
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// Called when a keyframe should be generated
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virtual void OnGenerateKeyFrame() = 0;
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// Called when the implementor should eventually start to serve encoded
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// frames using BroadcastEncodedFrameBuffer.
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// The implementor should cause a keyframe to be eventually generated.
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virtual void OnEncodedSinkEnabled(bool enable) = 0;
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};
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explicit VideoRtpTrackSource(Callback* callback);
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VideoRtpTrackSource(const VideoRtpTrackSource&) = delete;
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VideoRtpTrackSource& operator=(const VideoRtpTrackSource&) = delete;
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// Call before the object implementing Callback finishes it's destructor. No
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// more callbacks will be fired after completion. Must be called on the
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// worker thread
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void ClearCallback();
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// Call to broadcast an encoded frame to registered sinks.
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// This method can be called on any thread or queue.
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void BroadcastRecordableEncodedFrame(
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const RecordableEncodedFrame& frame) const;
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// VideoTrackSource
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rtc::VideoSourceInterface<VideoFrame>* source() override;
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rtc::VideoSinkInterface<VideoFrame>* sink();
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// Returns true. This method can be called on any thread.
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bool SupportsEncodedOutput() const override;
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// Generates a key frame. Must be called on the worker thread.
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void GenerateKeyFrame() override;
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// Adds an encoded sink. Must be called on the worker thread.
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void AddEncodedSink(
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rtc::VideoSinkInterface<RecordableEncodedFrame>* sink) override;
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// Removes an encoded sink. Must be called on the worker thread.
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void RemoveEncodedSink(
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rtc::VideoSinkInterface<RecordableEncodedFrame>* sink) override;
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private:
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RTC_NO_UNIQUE_ADDRESS SequenceChecker worker_sequence_checker_{
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SequenceChecker::kDetached};
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// `broadcaster_` is needed since the decoder can only handle one sink.
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// It might be better if the decoder can handle multiple sinks and consider
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// the VideoSinkWants.
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rtc::VideoBroadcaster broadcaster_;
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mutable Mutex mu_;
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std::vector<rtc::VideoSinkInterface<RecordableEncodedFrame>*> encoded_sinks_
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RTC_GUARDED_BY(mu_);
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Callback* callback_ RTC_GUARDED_BY(worker_sequence_checker_);
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};
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} // namespace webrtc
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#endif // PC_VIDEO_RTP_TRACK_SOURCE_H_
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