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https://github.com/qTox/qTox.git
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c0d8703368
And properly handle toxav happily delivering things out of order, like firing a video frame callback right after a callback setting the bitrate to 0, when the peer sent these commands in the right order
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/*
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Copyright © 2014-2015 by The qTox Project
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This file is part of qTox, a Qt-based graphical interface for Tox.
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qTox is libre software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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qTox is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with qTox. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef VIDEOSOURCE_H
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#define VIDEOSOURCE_H
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#include <QObject>
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#include <memory>
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class VideoFrame;
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/// An abstract source of video frames
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/// When it has at least one subscriber the source will emit new video frames
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/// Subscribing is recursive, multiple users can subscribe to the same VideoSource
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class VideoSource : public QObject
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{
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Q_OBJECT
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public:
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virtual ~VideoSource() = default;
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/// If subscribe sucessfully opens the source, it will start emitting frameAvailable signals
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virtual bool subscribe() = 0;
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/// Stop emitting frameAvailable signals, and free associated resources if necessary
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virtual void unsubscribe() = 0;
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signals:
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void frameAvailable(std::shared_ptr<VideoFrame> frame);
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/// Emitted when the source is stopped for an indefinite amount of time,
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/// but might restart sending frames again later
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void sourceStopped();
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};
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#endif // VIDEOSOURCE_H
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