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80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
/*
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Copyright © 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 CAMERA_H
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#define CAMERA_H
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#include <QHash>
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#include <QString>
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#include <QFuture>
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#include <QVector>
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#include <atomic>
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#include "src/video/videosource.h"
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#include "src/video/videomode.h"
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class CameraDevice;
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struct AVCodecContext;
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class CameraSource : public VideoSource
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{
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Q_OBJECT
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public:
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static CameraSource& getInstance();
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static void destroyInstance();
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void open();
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void open(const QString& deviceName);
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void open(const QString& deviceName, VideoMode mode);
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void close();
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bool isOpen();
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// VideoSource interface
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virtual bool subscribe() override;
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virtual void unsubscribe() override;
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signals:
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void deviceOpened();
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private:
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CameraSource();
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~CameraSource();
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void stream();
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void freelistCallback(int freelistIndex);
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int getFreelistSlotLockless();
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bool openDevice();
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void closeDevice();
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private:
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QVector<std::weak_ptr<VideoFrame>> freelist;
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QFuture<void> streamFuture;
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QString deviceName;
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CameraDevice* device;
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VideoMode mode;
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AVCodecContext* cctx, *cctxOrig;
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int videoStreamIndex;
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QMutex biglock, freelistLock;
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std::atomic_bool _isOpen;
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std::atomic_bool streamBlocker;
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std::atomic_int subscriptions;
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static CameraSource* instance;
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};
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#endif // CAMERA_H
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