4412关于移植usb摄像头在qt5虚拟机下呈像出现问题求助

qq1291588113

错误：Starting /opt/Qtworkspace/build-qtcamera-Desktop_Qt_5_3_GCC_64bit-Debug/qtcamera...
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QString::arg: Argument missing: VIDIOC_S_FMT, Invalid argument

paintEngine代码
void ProcessImage::paintEvent(QPaintEvent *)
{

    rs = vd->get_frame((void **)&p,(size_t*)&len);
    convert_yuv_to_rgb_buffer(p,pp,320,240/*QWidget::width(),QWidget::height()*/);
    frame->loadFromData((uchar *)pp,/*len*/320 * 240 * 3 * sizeof(char));

//    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();
}


fmt设置
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
    fmt.fmt.pix.width = 320;
    fmt.fmt.pix.height = 240;
    fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
    fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;

file:///C:\Users\zhang\AppData\Roaming\Tencent\Users\1291588113\QQ\WinTemp\RichOle\55S_O{X$DORJVF}JV8WB7YP.png
file:///C:\Users\zhang\AppData\Roaming\Tencent\Users\1291588113\QQ\WinTemp\RichOle\55S_O{X$DORJVF}JV8WB7YP.png

TOPEET_moon

出现什么问题了？

qq1291588113

TOPEET_moon 发表于 2016-11-21 09:26
出现什么问题了？

VIDIOC_S_FMT
Starting /opt/Qtworkspace/build-qtcamera-Desktop_Qt_5_3_GCC_64bit-Debug/qtcamera...
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QString::arg: Argument missing: VIDIOC_S_FMT, Invalid argument

qq1291588113

已经解决问题了。。。。。。。。。。。