The following code is intended to display an Image sent over network. I sent a header of 16 bytes which I use to calculate the size of image that follows and then read that many bytes and display the image.
void socket::readyRead()
{
while(socket->bytesAvailable() > 0) {
quint8 Data[16];
socket->read((char *)&Data,16);
img_size = (((quint8)Data[1]<<8)+ (quint8)Data[0]) * (((quint8)Data[3]<<8)+ (quint8)Data[2]) * 1;
qDebug() << "image zi" << img_size+1;
while(buffer.size() < (img_size))
{
// qDebug() << buffer.size();
socket->waitForReadyRead();
buffer.append(socket->read((img_size)-(buffer.size()) ));
}
unsigned char* imgdatara = (unsigned char*)&buffer.data()[0];
if( !image )
image
= new QImage(imgdatara,
32,
640,
QImage::Format_Grayscale8);
else
{
delete image;
image
= new QImage(imgdatara,
32,
640,
QImage::Format_Grayscale8);
}
emit msg(image);
}
}
void socket::readyRead()
{
while(socket->bytesAvailable() > 0) {
quint8 Data[16];
socket->read((char *)&Data,16);
img_size = (((quint8)Data[1]<<8)+ (quint8)Data[0]) * (((quint8)Data[3]<<8)+ (quint8)Data[2]) * 1;
QByteArray buffer = socket->read(img_size);
qDebug() << "image zi" << img_size+1;
while(buffer.size() < (img_size))
{
// qDebug() << buffer.size();
socket->waitForReadyRead();
buffer.append(socket->read((img_size)-(buffer.size()) ));
}
unsigned char* imgdatara = (unsigned char*)&buffer.data()[0];
if( !image )
image = new QImage(imgdatara,32,640,QImage::Format_Grayscale8);
else
{
delete image;
image = new QImage(imgdatara,32,640,QImage::Format_Grayscale8);
}
emit msg(image);
}
}
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My GUI says "not responding" and freezes.
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