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出门在外也不愁& & & & & &视频监控分为两部分，PC端，ARM板端。 &PC端的软件界面是用QT写的， 登入名等用到QSql数据库的一些相关知识，也有仿照锐捷客户端来设计界面。
在这里小抱怨下锐捷客户端啦，不过已经有人破解咯。 & & 那首先，我们通过PC段输入用户名，密码，用户名密码都存在数据库里，当然用户名密码都是可以更改的。&
之后登入上，选择连接选项，输入开发板IP，连接。传数据是用socket编程。不过在此之前，还要配置好PC机IP，用网线来传送数据，那么在局域网内把IP设为同一网段。这边在ARM板用
ifconfig命令查看子网掩码，IP，网关等。 之后在PC设置。 & &之前要准备的文件系统，环境配置就不多说，前篇博文&音乐播放器&有讲解。 一切就绪，那就来行使监控功能了。&
ARM端用SecureCRT工具来查看。
PC端IP设置。
PC端登入界面（英文界面），不过本人把图片标题给隐藏了，因为上面有学校校徽怕侵权啦。
PC端登入界面（中文界面）。
输入正确用户名密码登入进次界面。
菜单栏上面设置选项下面有个连接选项，选择那么跳出此界面。端口号，这个就是程序里已经给定。比如说http就是80端口，这边我们设定为666.
当然也可以是其他，只要不和其他端口冲突即可。
这边就是摄像头即将要获取的图像，之所以把书目贴出来，是希望对大家有些帮助。
PC端监控画面。
ARM板端监控画面，可以看到和PC端是一样的。 &不过PC端会比ARM端稍稍延时。
部分源码：
#include "editpasswd.h"
#include "connection.h"
EditPasswd::EditPasswd(QWidget *parent) :
QDialog(parent)
this-&setWindowTitle(tr("passwd modified"));
QGridLayout *gridLayout=new QGridL
QVBoxLayout *vboxLayout=new QVBoxLayout(this);
oldLabel=new QLabel(tr("current passward"));
newLabel=new QLabel(tr("new passward"));
renewLabel=new QLabel(tr("confirm new passward"));
oldLineEdit=new QLineEdit(this);
newLineEdit=new QLineEdit(this);
renewLineEdit=new QLineEdit(this);
okButton=new QPushButton(tr("ok"));
oldLabel-&setBuddy(oldLineEdit);
newLabel-&setBuddy(newLineEdit);
renewLabel-&setBuddy(renewLineEdit);
gridLayout-&setMargin(15);
gridLayout-&setSpacing(10);
gridLayout-&addWidget(oldLabel,0,0);
gridLayout-&addWidget(oldLineEdit,0,2);
gridLayout-&addWidget(newLabel,1,0);
gridLayout-&addWidget(newLineEdit,1,2);
gridLayout-&addWidget(renewLabel,2,0);
gridLayout-&addWidget(renewLineEdit,2,2);
newLineEdit-&setStatusTip(tr("please input passward of six figures"));
newLineEdit-&setMaxLength(6);
oldLineEdit-&setEchoMode(QLineEdit::Password);
newLineEdit-&setEchoMode(QLineEdit::Password);
renewLineEdit-&setMaxLength(6);
renewLineEdit-&setEchoMode(QLineEdit::Password);
vboxLayout-&addLayout(gridLayout);
vboxLayout-&addWidget(okButton,0,Qt::AlignBottom|Qt::AlignCenter);
oldLineEdit-&text().clear();
newLineEdit-&text().clear();
renewLineEdit-&text().clear();
connect(okButton,SIGNAL(clicked()),this,SLOT(slotok()));
void EditPasswd::slotok()
if(oldLineEdit-&text().isEmpty()||newLineEdit-&text().isEmpty()||renewLineEdit-&text().isEmpty())
QMessageBox::warning(this, tr("warning"), tr("please complete the inoformation！"),
QMessageBox::Ok);
if(newLineEdit-&text().length()!=6)
QMessageBox::information(this, tr("information"), tr("The new passward is not six figures！"),
QMessageBox::Ok);
else if(newLineEdit-&text()!=renewLineEdit-&text())
QMessageBox::information(this, tr("information"), tr("The two passwards you typed do not match，please input again！"),
QMessageBox::Ok);
oldLineEdit-&text().clear();
newLineEdit-&text().clear();
renewLineEdit-&text().clear();
query.exec("select * from logininfor");
query.next();
if(query.value(1).toString()==oldLineEdit-&text())
bool temp=query.exec(QString("update logininfor set passward='%1' where passward='%2'")
.arg(newLineEdit-&text()).arg(oldLineEdit-&text()));
QMessageBox::information(this, tr("information"), tr("passward modification success！"),
QMessageBox::Ok);
oldLineEdit-&text().clear();
newLineEdit-&text().clear();
renewLineEdit-&text().clear();
QMessageBox::information(this, tr("information"), tr("passward change failure，can't access database!"),
QMessageBox::Ok);
oldLineEdit-&text().clear();
newLineEdit-&text().clear();
renewLineEdit-&text().clear();
QMessageBox::warning(this, tr("warning"), tr("The current passward is mistake，please input again！"),
QMessageBox::Ok);
oldLineEdit-&text().clear();
newLineEdit-&text().clear();
renewLineEdit-&text().clear();
EditPasswd::~EditPasswd()
oldLineEdit-&text().clear();
newLineEdit-&text().clear();
renewLineEdit-&text().clear();
#include "logininterface.h"
#include "ui_logininterface.h"
#include&QMessageBox&
#include&QCheckBox&
#include&QDebug&
#include&QtSql&
LoginInterface::LoginInterface(QWidget *parent) :
QDialog(parent),
ui(new Ui::LoginInterface)
ui-&setupUi(this);
ui-&lineEdit_passwd-&setEchoMode(QLineEdit::Password);
ifChinese=0;
ui-&comboBox-&setCurrentIndex(1);
connect(ui-&comboBox,SIGNAL(currentIndexChanged(int)),this,SLOT(change_Language()));
LoginInterface::~LoginInterface()
void LoginInterface::on_pushButtonlogin_clicked()
if(ui-&lineEdit_passwd-&text().isEmpty()|ui-&lineEdit_usr-&text().isEmpty())
QMessageBox::information(this, tr("please input user and passward"),
tr("please input user and passward first！"), QMessageBox::Ok);
ui-&lineEdit_usr-&setFocus();
query.exec("select * from logininfor");
query.next();
if ((query.value(0).toString().trimmed() == ui-&lineEdit_usr-&text())
&&(query.value(1).toString().trimmed() == ui-&lineEdit_passwd-&text()))
QDialog::accept();
QMessageBox::warning(this, tr("user or passward is wrong"),
tr("please input correct user and passward to login！"), QMessageBox::Ok);
if(!ui-&checkBoxsave-&isChecked())
qDebug()&&"execute";
ui-&lineEdit_passwd-&clear();
ui-&lineEdit_usr-&clear();
ui-&lineEdit_usr-&setFocus();//设置光标的初始位置
void LoginInterface::on_pushButtonexit_clicked()
switch( QMessageBox::information(this,tr("video monitor system"),tr("Are you sure to exit？"),
QMessageBox::Yes,QMessageBox::No))
case QMessageBox::Yes:
this-&close();
case QMessageBox::No:
void LoginInterface::change_Language()
if(ui-&comboBox-&currentIndex()==0)
ifChinese=1;
ui-&labelusr-&setText(tr("用户名"));
ui-&labelpasswd-&setText(tr("密码"));
this-&setWindowTitle(tr("视频监控系统"));
ui-&pushButtonexit-&setText(tr("退出"));
ui-&pushButtonlogin-&setText(tr("登陆"));
ui-&checkBoxsave-&setText(tr("保存密码"));
ifChinese=0;
#include "mainwindow.h"
#include&QtSql&
mainWindow::mainWindow(QWidget *parent) :
QMainWindow(parent)
this-&setWindowTitle(tr("video monitor system"));
label=new QLabel(this);
this-&setCentralWidget(label);
this-&resize(700,525);
socket=new QTcpSocket(this);
datasize=0;
createAction();
createMenu();
this-&label-&setStyleSheet("background-image:url(:/new/Storm.jpg)");
void mainWindow::createAction()
openAction =new QAction(tr("open"),this);
openAction-&setShortcut(tr("Ctrl+O"));
connect(openAction,SIGNAL(triggered()),this,SLOT(openFile()));
exitAction=new QAction(tr("exit"),this);
exitAction-&setShortcut(tr("Ctrl+E"));
connect(exitAction,SIGNAL(triggered()),this,SLOT(exitMessage()));
helpAction=new QAction(tr("help"),this);
helpAction-&setShortcut(tr("Ctrl+H"));
connect(helpAction,SIGNAL(triggered()),this,SLOT(helpShow()));
passwdAction=new QAction(tr("change passward"),this);
passwdAction-&setShortcut(tr("Ctrl+P"));
connectAction=new QAction(tr("connect"),this) ;
connectAction-&setShortcut(tr("Ctrl+S"));
connect(passwdAction,SIGNAL(triggered()),this,SLOT(passwdShow()));
connect(connectAction,SIGNAL(triggered()),this,SLOT(connectMessage()));
connect(socket,SIGNAL(readyRead()),this,SLOT(readMessage()));
void mainWindow::createMenu()
fileMenu=this-&menuBar()-&addMenu(tr("menu"));
editMenu=this-&menuBar()-&addMenu(tr("setup"));
aboutMenu=this-&menuBar()-&addMenu(tr("help"));
fileMenu-&addAction(openAction);
fileMenu-&addAction(exitAction);
editMenu-&addAction(passwdAction);
editMenu-&addAction(connectAction);
aboutMenu-&addAction(helpAction);
void mainWindow::openFile()
void mainWindow::helpShow()
QMessageBox::about( this, tr( "About Video Monitor System" ),
tr( "&p&&b&&b&&b&Video Monitor System&/b&&/b&&/b&&/p&&p&&/p&"
"&p&Version 0.0.0 ()&/p&&p&&/p&"
"&p&If you have some questions,mail(stu_)&/p&&p&&/p&"
"&p&For more infomation, please visit our monitor system&/p&"
"&p&&a href = &&/a&&/p&" ) );
void mainWindow::passwdShow()
qApp-&processEvents();
w.setFixedSize(500,150);
w.oldLineEdit-&setFocus();
w.oldLineEdit-&clear();
w.newLineEdit-&clear();
w.renewLineEdit-&clear();
void mainWindow::exitMessage()
switch(QMessageBox::information(this,tr("video monitor system"),tr("Are you sure to exit？"),
QMessageBox::Yes,QMessageBox::No))
case QMessageBox::Yes:
this-&close();
case QMessageBox::No:
void mainWindow::connectMessage()
widget=new QW
connectui.setupUi(widget);
widget-&show();
widget-&setWindowTitle(tr("server information"));
connect(connectui.pushButtonconnect,SIGNAL(clicked()),this,SLOT(connectserver()));
void mainWindow::connectserver()
socket-&connectToHost(connectui.lineEditip-&text(),connectui.lineEdit_port-&text().toInt());
if(!socket-&waitForConnected(3000))
QMessageBox::information(this,tr("server information"),tr("please confirm your iP address、port,the server is running"),QMessageBox::Ok);
widget-&close();
void mainWindow::readMessage()
while(socket-&bytesAvailable()&0)
if(datasize==0)
QDataStream in(socket);
in.setVersion(QDataStream::Qt_4_5);
if(socket-&bytesAvailable()&sizeof(quint64))
qDebug()&&
if(datasize & socket-&bytesAvailable())
QByteArray array=socket-&read(datasize);
QBuffer buffer(&array);
buffer.open(QIODevice::ReadOnly);
QImageReader reader(&buffer,"bmp");
image=reader.read();
if(!image.isNull())
datasize=0;
socket-&reset();
label-&setSizeIncrement(image.size());
label-&setPixmap(QPixmap::fromImage(image));
qDebug()&&"error!!!!!!!!!!!";
#include &QtGui/QApplication&
#include "logininterface.h"
#include"mainwindow.h"
#include"connection.h"
int main(int argc, char *argv[])
QApplication a(argc, argv);
QTextCodec::setCodecForTr(QTextCodec::codecForName("GB18030"));
QTextCodec::setCodecForLocale(QTextCodec::codecForName("GB18030"));
if(!createConnection())
if(w.exec()==QDialog::Accepted)
if(w.ifChinese==1)
translator.load(":/new/en.qm");
a.installTranslator(&translator);
QPixmap pixmap(":/new/smile.bmp");
QSplashScreen splash(pixmap);
splash.show();
splash.resize(700,525);
a.processEvents();
window.show();
splash.finish(&window);
return a.exec();
#include &QtGui&
#include "processImage.h"
#include "videodevice.h"
extern "C"
#include &stdio.h&
#include &stdlib.h&
ProcessImage::ProcessImage(QWidget *parent):QWidget(parent)
socket=new QTcpSocket(this);
server=new QTcpServer(this);
if(!server-&listen(QHostAddress::Any,666))
qDebug()&&"can't listen boys";
pp = (unsigned char *)malloc(320 * 240/*QWidget::width()*QWidget::height()*/* 3 * sizeof(char));
painter = new QPainter(this);
frame = new QImage(pp,320,240,QImage::Format_RGB888);
// frame = new QPixmap(640,320);
label = new QLabel();
vd = new VideoDevice(tr("/dev/video0"));
connect(vd, SIGNAL(display_error(QString)), this,SLOT(display_error(QString)));
rs = vd-&open_device();
if(-1==rs)
QMessageBox::warning(this,tr("error"),tr("open /dev/dsp error"),QMessageBox::Yes);
vd-&close_device();
rs = vd-&init_device();
if(-1==rs)
QMessageBox::warning(this,tr("error"),tr("init failed"),QMessageBox::Yes);
vd-&close_device();
rs = vd-&start_capturing();
if(-1==rs)
QMessageBox::warning(this,tr("error"),tr("start capture failed"),QMessageBox::Yes);
vd-&close_device();
if(-1==rs)
QMessageBox::warning(this,tr("error"),tr("get frame failed"),QMessageBox::Yes);
vd-&stop_capturing();
timer = new QTimer(this);
connect(timer,SIGNAL(timeout()),this,SLOT(update()));
timer-&start(30);
QHBoxLayout *hLayout = new QHBoxLayout();
hLayout-&addWidget(label);
setLayout(hLayout);
setWindowTitle(tr("Capture"));
connect(server,SIGNAL(newConnection()),this,SLOT(sendMessage()));
ProcessImage::~ProcessImage()
rs = vd-&stop_capturing();
rs = vd-&uninit_device();
rs = vd-&close_device();
void ProcessImage::paintEvent(QPaintEvent *)
if(check==1)
rs = vd-&get_frame((void **)&p,&len);
convert_yuv_to_rgb_buffer(p,pp,320,240/*QWidget::width(),QWidget::height()*/);
frame-&loadFromData((uchar *)pp,/*len*/320 * 240 * 3 * sizeof(char));
frame-&save(&buffer,"BMP");
QDataStream out(&data,QIODevice::WriteOnly);
out.setVersion(QDataStream::Qt_4_5);
out&&(quint64)buffer.data().size();
data.append(buffer.data());
socket-&write(data);
socket-&flush();
data.resize(0);
painter-&begin(this);
painter-&drawImage(0,0,*frame);
painter-&end();
rs = vd-&unget_frame();
// frame-&load("./img3.jpg");
label-&setPixmap(QPixmap::fromImage(*frame,Qt::AutoColor));
// label-&show();
rs = vd-&unget_frame();
// label-&drawFrame();
QPixmap *pixImage = new QPixmap();
pixImage-&loadFromData((uchar *)pp,sizeof(pp),0,Qt::AutoColor);
QPainter painter(this);
painter.begin(this);
painter.drawPixmap(0,0,QWidget::width(),QWidget::height(),*pixImage);
painter.end();
void ProcessImage::display_error(QString err)
QMessageBox::warning(this,tr("error"), err,QMessageBox::Yes);
int ProcessImage::convert_yuv_to_rgb_buffer(unsigned char *yuv, unsigned char *rgb, unsigned int width, unsigned int height)
unsigned int in, out = 0;
unsigned int pixel_16;
unsigned char pixel_24[3];
unsigned int pixel32;
int y0, u, y1,
for(in = 0; in & width * height * 2; in += 4) {
pixel_16 =
yuv[in + 3] && 24 |
yuv[in + 2] && 16 |
yuv[in + 1] &&
yuv[in + 0];
y0 = (pixel_16 & 0x000000ff);
= (pixel_16 & 0x0000ff00) &&
y1 = (pixel_16 & 0x00ff0000) && 16;
= (pixel_16 & 0xff000000) && 24;
pixel32 = convert_yuv_to_rgb_pixel(y0, u, v);
pixel_24[0] = (pixel32 & 0x000000ff);
pixel_24[1] = (pixel32 & 0x0000ff00) && 8;
pixel_24[2] = (pixel32 & 0x00ff0000) && 16;
rgb[out++] = pixel_24[0];
rgb[out++] = pixel_24[1];
rgb[out++] = pixel_24[2];
pixel32 = convert_yuv_to_rgb_pixel(y1, u, v);
pixel_24[0] = (pixel32 & 0x000000ff);
pixel_24[1] = (pixel32 & 0x0000ff00) && 8;
pixel_24[2] = (pixel32 & 0x00ff0000) && 16;
rgb[out++] = pixel_24[0];
rgb[out++] = pixel_24[1];
rgb[out++] = pixel_24[2];
int ProcessImage::convert_yuv_to_rgb_pixel(int y, int u, int v)
unsigned int pixel32 = 0;
unsigned char *pixel = (unsigned char *)&pixel32;
r = y + (1.370705 * (v-128));
g = y - (0.698001 * (v-128)) - (0.337633 * (u-128));
b = y + (1.732446 * (u-128));
if(r & 255) r = 255;
if(g & 255) g = 255;
if(b & 255) b = 255;
if(r & 0) r = 0;
if(g & 0) g = 0;
if(b & 0) b = 0;
pixel[0] = r * 220 / 256;
pixel[1] = g * 220 / 256;
pixel[2] = b * 220 / 256;
return pixel32;
#include "videodevice.h"
VideoDevice::VideoDevice(QString dev_name)
this-&dev_name = dev_
this-&fd = -1;
this-&buffers = NULL;
this-&n_buffers = 0;
this-&index = -1;
int VideoDevice::open_device()
fd = open(dev_name.toStdString().c_str(), O_RDWR/*|O_NONBLOCK*/, 0);
// fd = open(dev_name.toStdString().c_str(), O_RDWR|O_NONBLOCK, 0);
if(-1 == fd)
emit display_error(tr("open: %1").arg(QString(strerror(errno))));
return -1;
int VideoDevice::close_device()
if(-1 == close(fd))
emit display_error(tr("close: %1").arg(QString(strerror(errno))));
return -1;
int VideoDevice::init_device()
if(-1 == ioctl(fd, VIDIOC_QUERYCAP, &cap))
if(EINVAL == errno)
emit display_error(tr("%1 is no V4l2 device").arg(dev_name));
emit display_error(tr("VIDIOC_QUERYCAP: %1").arg(QString(strerror(errno))));
return -1;
if(!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE))
emit display_error(tr("%1 is no video capture device").arg(dev_name));
return -1;
if(!(cap.capabilities & V4L2_CAP_STREAMING))
emit display_error(tr("%1 does not support streaming i/o").arg(dev_name));
return -1;
CLEAR(cropcap);
cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if(0 == ioctl(fd, VIDIOC_CROPCAP, &cropcap))
CLEAR(crop);
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c = cropcap.
if(-1 == ioctl(fd, VIDIOC_S_CROP, &crop))
if(EINVAL == errno)
emit display_error(tr("VIDIOC_S_CROP not supported"));
emit display_error(tr("VIDIOC_S_CROP: %1").arg(QString(strerror(errno))));
return -1;
emit display_error(tr("VIDIOC_CROPCAP: %1").arg(QString(strerror(errno))));
return -1;
CLEAR(fmt);
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.width = 640;
fmt.fmt.pix.height = 480;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
if(-1 == ioctl(fd, VIDIOC_S_FMT, &fmt))
emit display_error(tr("VIDIOC_S_FMT").arg(QString(strerror(errno))));
return -1;
if(-1 == init_mmap())
return -1;
int VideoDevice::init_mmap()
CLEAR(req);
req.count = 4;
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_MMAP;
if(-1 == ioctl(fd, VIDIOC_REQBUFS, &req))
if(EINVAL == errno)
emit display_error(tr("%1 does not support memory mapping").arg(dev_name));
return -1;
emit display_error(tr("VIDIOC_REQBUFS %1").arg(QString(strerror(errno))));
return -1;
if(req.count & 2)
emit display_error(tr("Insufficient buffer memory on %1").arg(dev_name));
return -1;
buffers = (buffer*)calloc(req.count, sizeof(*buffers));
if(!buffers)
emit display_error(tr("out of memory"));
return -1;
for(n_buffers = 0; n_buffers & req. ++n_buffers)
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = n_
if(-1 == ioctl(fd, VIDIOC_QUERYBUF, &buf))
emit display_error(tr("VIDIOC_QUERYBUF: %1").arg(QString(strerror(errno))));
return -1;
buffers[n_buffers].length = buf.
buffers[n_buffers].start =
mmap(NULL, // start anywhere
buf.length,
PROT_READ | PROT_WRITE,
MAP_SHARED,
fd, buf.m.offset);
if(MAP_FAILED == buffers[n_buffers].start)
emit display_error(tr("mmap %1").arg(QString(strerror(errno))));
return -1;
int VideoDevice::start_capturing()
unsigned int
for(i = 0; i & n_ ++i)
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory =V4L2_MEMORY_MMAP;
buf.index =
fprintf(stderr, "n_buffers: %d\n", i);
if(-1 == ioctl(fd, VIDIOC_QBUF, &buf))
emit display_error(tr("VIDIOC_QBUF: %1").arg(QString(strerror(errno))));
return -1;
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if(-1 == ioctl(fd, VIDIOC_STREAMON, &type))
emit display_error(tr("VIDIOC_STREAMON: %1").arg(QString(strerror(errno))));
return -1;
int VideoDevice::stop_capturing()
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if(-1 == ioctl(fd, VIDIOC_STREAMOFF, &type))
emit display_error(tr("VIDIOC_STREAMOFF: %1").arg(QString(strerror(errno))));
return -1;
int VideoDevice::uninit_device()
unsigned int
for(i = 0; i & n_ ++i)
if(-1 == munmap(buffers[i].start, buffers[i].length))
emit display_error(tr("munmap: %1").arg(QString(strerror(errno))));
return -1;
free(buffers);
int VideoDevice::get_frame(void **frame_buf, size_t* len)
v4l2_buffer queue_
CLEAR(queue_buf);
queue_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
queue_buf.memory = V4L2_MEMORY_MMAP;
if(-1 == ioctl(fd, VIDIOC_DQBUF, &queue_buf))
switch(errno)
case EAGAIN:
perror("dqbuf");
return -1;
return -1 ;
emit display_error(tr("VIDIOC_DQBUF: %1").arg(QString(strerror(errno))));
return -1;
*frame_buf = buffers[queue_buf.index].
*len = buffers[queue_buf.index].
index = queue_buf.
int VideoDevice::unget_frame()
if(index != -1)
v4l2_buffer queue_
CLEAR(queue_buf);
queue_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
queue_buf.memory = V4L2_MEMORY_MMAP;
queue_buf.index =
if(-1 == ioctl(fd, VIDIOC_QBUF, &queue_buf))
emit display_error(tr("VIDIOC_QBUF: %1").arg(QString(strerror(errno))));
return -1;
return -1;
#ifndef PROCESSIMAGE_H
#define PROCESSIMAGE_H
#include&QTcpServer&
#include&QTcpSocket&
#include &QtGui&
#include "videodevice.h"
class ProcessImage : public QWidget
ProcessImage(QWidget *parent=0);
~ProcessImage();
QPainter *
//QPixmap *
QTcpServer *
QTcpSocket *
unsigned int
int convert_yuv_to_rgb_pixel(int y, int u, int v);
int convert_yuv_to_rgb_buffer(unsigned char *yuv, unsigned char *rgb, unsigned int width, unsigned int height);
VideoDevice *
private slots:
void paintEvent(QPaintEvent *);
void display_error(QString err);
void sendMessage();
#ifndef VIDEODEVICE_H
#define VIDEODEVICE_H
#include &string.h&
#include &stdlib.h&
#include &errno.h&
#include &fcntl.h&
#include &sys/ioctl.h&
#include &sys/mman.h&
#include &asm/types.h&
#include &linux/videodev2.h&
#include &QString&
#include &QObject&
#define CLEAR(x) memset(&(x), 0, sizeof(x))
class VideoDevice : public QObject
VideoDevice(QString dev_name);
//VideoDevice();
int open_device();
int close_device();
int init_device();
int start_capturing();
int stop_capturing();
int uninit_device();
int get_frame(void **, size_t*);
int unget_frame();
int init_mmap();
struct buffer
QString dev_
unsigned int n_
void display_error(QString);
#endif // VIDEODEVICE_H
ARM端程序是在linux下开发的，需要在Linux下才能编译通过，不过建议先使用X11编译看到效果后，
之后在交叉编译，这样能更好的查错。因为交叉编译是看不到界面效果的。
& ARM端源码
&&PC端源码
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