mycam.cpp.svn-base

一个简单的摄像头播放程序,用qt做的界面

#include "mycam.h"
#include "v4l2.h"

MyCam::MyCam()
	:QDialog()
{
	ui.setupUi(this);

	connect(ui.recordButton, SIGNAL(clicked()), this, SLOT(recordImage()));
//	connect(stopButton, SIGNAL(clicked()), this, SLOT(stopVideo()));
//	connect(recordButton, SIGNAL(clicked()), this, SLOT(recordVideo()));
	connect(ui.recordButton, SIGNAL(clicked()), this, SLOT(buttonDisabled()));
	connect(ui.stopButton, SIGNAL(clicked()), this, SLOT(buttonEnabled()));
	
	display();
	}

void MyCam::recordVideo()
{
	
	}

void MyCam::recordImage()
{
	
	}

void MyCam::stopVideo()
{
	
	}

void MyCam::flushBuff()
{
	QImage image;
	read_frame (&pd);
	image.loadFromData((uchar*)pd.buffers[pd.buf.index].start,
			                     pd.fmt.fmt.pix.sizeimage);
	ui.displayLabel->setPixmap(QPixmap::fromImage(image));

	return_data(&pd);

	}

void MyCam::display()
{
	timer = new QTimer();
	timer->start(40);
	pd.dev_name = "/dev/video0";
	init_dev(&pd);
	connect(timer, SIGNAL(timeout()), this, SLOT(flushBuff()));
	}

void MyCam::buttonDisabled()
{
	ui.recordButton->setDisabled(TRUE);
	}

void MyCam::buttonEnabled()
{
	ui.recordButton->setEnabled(TRUE);
	}

void MyCam::paintEvent(QPaintEvent *event)
{
	QImage image;
	read_frame (&pd);
	image.loadFromData((uchar*)pd.buffers[pd.buf.index].start,
			                     pd.fmt.fmt.pix.sizeimage);
	ui.displayLabel->setPixmap(QPixmap::fromImage(image));

	return_data(&pd);
	
	}