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127 lines
2.8 KiB
C++
127 lines
2.8 KiB
C++
/*
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Copyright (C) 2014 by Project Tox <https://tox.im>
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This file is part of qTox, a Qt-based graphical interface for Tox.
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This program 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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This program 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.
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See the COPYING file for more details.
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*/
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#ifndef CAMERA_H
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#define CAMERA_H
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#include <QImage>
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#include <QList>
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#include <QQueue>
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#include <QMutex>
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#include "vpx/vpx_image.h"
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#include "opencv2/opencv.hpp"
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#include "videosource.h"
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/**
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* This class is a wrapper to share a camera's captured video frames
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* It allows objects to suscribe and unsuscribe to the stream, starting
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* the camera only when needed, and giving access to the last frames
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**/
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class SelfCamWorker : public QObject
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{
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Q_OBJECT
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public:
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SelfCamWorker(int index);
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void doWork();
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bool hasFrame();
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cv::Mat3b deqeueFrame();
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void suspend();
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void resume();
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public slots:
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void onStart();
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signals:
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void newFrameAvailable();
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private slots:
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void _suspend();
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void _resume();
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private:
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QMutex mutex;
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QQueue<cv::Mat3b> qeue;
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QTimer* clock;
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cv::VideoCapture cam;
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cv::Mat3b frame;
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int camIndex;
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};
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class Camera : public VideoSource
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{
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Q_OBJECT
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public:
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struct VideoMode {
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QSize res;
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double fps;
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};
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enum Prop {
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BRIGHTNESS,
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SATURATION,
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CONTRAST,
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HUE,
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};
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~Camera();
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static Camera* getInstance(); ///< Returns the global widget's Camera instance
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cv::Mat getLastFrame(); ///< Get the last captured frame
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vpx_image getLastVPXImage(); ///< Convert the last frame to a vpx_image (can be expensive !)
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QList<VideoMode> getVideoModes();
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VideoMode getBestVideoMode();
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void setVideoMode(VideoMode mode);
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VideoMode getVideoMode();
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void setProp(Prop prop, double val);
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double getProp(Prop prop);
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// VideoSource interface
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virtual void *getData();
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virtual int getDataSize();
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virtual void lock();
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virtual void unlock();
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virtual QSize resolution();
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virtual void subscribe();
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virtual void unsubscribe();
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protected:
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Camera();
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private:
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int refcount; ///< Number of users suscribed to the camera
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cv::VideoCapture cam; ///< OpenCV camera capture opbject
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cv::Mat3b currFrame;
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QMutex mutex;
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VideoMode mode;
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QThread* workerThread;
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SelfCamWorker* worker;
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static Camera* instance;
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private slots:
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void onNewFrameAvailable();
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};
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#endif // CAMERA_H
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