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为了方便提取YUV数据，扫描一帧图像分1,3,5,7,9...........奇数行

和0,2,4,6,8...偶数行。

转换算法是从  http://www.fourcc.org/fccyvrgb.php 中找到，失败了呀！！！！！

图像一看就不对，唉，搞了好几天了，谁来帮忙试一下呀。

void MainWindow::paintEvent(QPaintEvent *e)

{     QPainter tPainter(this);     tPainter.drawText(10,50,"hello");     QString tYUVFile("/home/shell.albert/project/H.264/football/fb001.yuv");     QFile tFile(tYUVFile);     if(!tFile.open(QIODevice::ReadOnly))     {             qDebug()<<"open file failed!";             return;     }     QByteArray tYData=tFile.read(84480);     QByteArray tUData=tFile.read(21120);     QByteArray tVData=tFile.read(21120);     QByteArray tRestData=tFile.readAll();     qDebug()<<"Y:"<<tYData.size();     qDebug()<<"U:"<<tUData.size();     qDebug()<<"V:"<<tVData.size();     qDebug()<<"Rest:"<<tRestData.size();     QImage tImage(352,240,QImage::Format_RGB32);     qint32 tYUVWidth=tImage.width(); #if 1     //1,3,5,7..................     for(qint32 i=1;i<tImage.height();i+=2)     {         for(qint32 j=0;j<tImage.width();j++)         {             qint32 x=i-1;             qint32 y=j;             qint32 tYOffset=x*tYUVWidth+y;             qint32 tUOffset=(x/2)*(tYUVWidth/2)+y/2;             qint32 tVOffset=(x/2)*(tYUVWidth/2)+y/2;             qDebug("1,3,5,7:(%d,%d):%d,%d,%d",i,j,tYOffset,tUOffset,tVOffset);             qint32 tYValue=tYData.at(tYOffset);             qint32 tUValue=tUData.at(tUOffset);             qint32 tVValue=tVData.at(tVOffset);             qint32 tRed=tYValue+1.403*tVValue;             qint32 tGreen=tYValue-0.344*tUValue-0.714*tVValue;             qint32 tBlue=tYValue+1.770*tUValue;             tRed=tRed>255?255:tRed<0?0:tRed;             tGreen=tGreen>255?255:tGreen<0?0:tGreen;             tBlue=tBlue>255?255:tBlue<0?0:tBlue;             tImage.setPixel(j,i,qRgb(tRed,tGreen,tBlue));         }     } #endif #if 0     //0,2,4,6,8...............     for(qint32 i=0;i<tImage.height();i+=2)     {         for(qint32 j=0;j<tImage.width();j++)         {             qint32 x=i;             qint32 y=j;             qint32 tYOffset=x*tYUVWidth+y;             qint32 tUOffset=(x/2)*(tYUVWidth/2)+y/2;             qint32 tVOffset=(x/2)*(tYUVWidth/2)+y/2;             qDebug("0,2,4,6:(%d,%d):%d,%d,%d",i,j,tYOffset,tUOffset,tVOffset);             qint32 tYValue=tYData.at(tYOffset);             qint32 tUValue=tUData.at(tUOffset);             qint32 tVValue=tVData.at(tVOffset);             qint32 tRed=1.164*(tYValue-16)+1.596*(tVValue-128);             qint32 tGreen=1.164*(tYValue-16)-0.813*(tVValue-128)-0.391*(tUValue-128);             qint32 tBlue=1.164*(tYValue-16)+2.018*(tUValue-128);             tRed=tRed>255?255:tRed<0?0:tRed;             tGreen=tGreen>255?255:tGreen<0?0:tGreen;             tBlue=tBlue>255?255:tBlue<0?0:tBlue;             tImage.setPixel(j,i,qRgb(tRed,tGreen,tBlue));         }     } #endif     tPainter.drawImage(0,0,tImage);     tYData.resize(0);     tUData.resize(0);     tVData.resize(0); }