mirror of
https://github.com/RetroShare/RetroShare.git
synced 2025-10-30 22:29:00 -04:00
c6103b7535
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7463 b45a01b8-16f6-495d-af2f-9b41ad6348cc
111 lines
2.4 KiB
C++
111 lines
2.4 KiB
C++
#include <opencv/cv.h>
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#include <opencv/highgui.h>
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#include <QTimer>
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#include <QPainter>
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#include "QVideoDevice.h"
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#include "VideoProcessor.h"
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QVideoInputDevice::QVideoInputDevice(QWidget *parent)
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{
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_timer = NULL ;
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_capture_device = NULL ;
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_video_encoder = NULL ;
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_echo_output_device = NULL ;
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}
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void QVideoInputDevice::stop()
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{
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if(_timer != NULL)
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{
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QObject::disconnect(_timer,SIGNAL(timeout()),this,SLOT(grabFrame())) ;
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_timer->stop() ;
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delete _timer ;
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_timer = NULL ;
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}
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if(_capture_device != NULL)
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{
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cvReleaseCapture(&_capture_device) ;
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_capture_device = NULL ;
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}
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}
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void QVideoInputDevice::start()
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{
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// make sure everything is re-initialised
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//
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stop() ;
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// Initialise la capture
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static const int cam_id = 0 ;
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_capture_device = cvCaptureFromCAM(cam_id);
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if(_capture_device == NULL)
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{
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std::cerr << "Cannot initialise camera. Something's wrong." << std::endl;
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return ;
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}
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_timer = new QTimer ;
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QObject::connect(_timer,SIGNAL(timeout()),this,SLOT(grabFrame())) ;
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_timer->start(50) ; // 10 images per second.
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}
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void QVideoInputDevice::grabFrame()
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{
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IplImage *img=cvQueryFrame(_capture_device);
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if(img == NULL)
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{
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std::cerr << "(EE) Cannot capture image from camera. Something's wrong." << std::endl;
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return ;
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}
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// get the image data
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if(img->nChannels != 3)
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{
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std::cerr << "(EE) expected 3 channels. Got " << img->nChannels << std::endl;
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cvReleaseImage(&img) ;
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return ;
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}
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static const int _encoded_width = 128 ;
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static const int _encoded_height = 128 ;
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QImage image = QImage((uchar*)img->imageData,img->width,img->height,QImage::Format_RGB888).scaled(QSize(_encoded_width,_encoded_height),Qt::IgnoreAspectRatio,Qt::SmoothTransformation) ;
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if(_video_encoder != NULL)
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{
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_video_encoder->addImage(image) ;
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emit networkPacketReady() ;
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}
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if(_echo_output_device != NULL) _echo_output_device->showFrame(image) ;
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}
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bool QVideoInputDevice::getNextEncodedPacket(RsVoipDataChunk& chunk)
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{
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return _video_encoder->nextPacket(chunk) ;
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}
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QVideoInputDevice::~QVideoInputDevice()
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{
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stop() ;
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}
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QVideoOutputDevice::QVideoOutputDevice(QWidget *parent)
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: QLabel(parent)
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{
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showFrameOff() ;
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}
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void QVideoOutputDevice::showFrameOff()
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{
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setPixmap(QPixmap(":/images/video-icon-big.png").scaled(170,128,Qt::KeepAspectRatio,Qt::SmoothTransformation)) ;
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}
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void QVideoOutputDevice::showFrame(const QImage& img)
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{
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setPixmap(QPixmap::fromImage(img).scaled(minimumSize(),Qt::IgnoreAspectRatio,Qt::SmoothTransformation)) ;
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}
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