QImage from QDatastream of float values

[connecting_dots]

Hi all,
I am getting image through UDP. In the payload of the frame, first 1 byte is width, and second byte is height and then image float values(32x32). Using QDataStream, I am trying to generate QImage but somehow I am not getting the correct solution. I am just stuck for converting and reading the the float values.

QDataStream out(udpdata);
out. setByteOrder(QDataStream::LittleEndian);
out.setFloatingPointPrecesion(QDataStream::SinglePrecision);
quint8 width, height;
out >> width, height;
int pixel= widthheight;
temp float =new floatpixel;
QByteArray buffer;
int index=0;
out.readbytes(temp,pixel);
buffer.append(temp, pixel);
QImage image(width, height, QImage::Format_RGB32);
for(int i=0; i<=(pixel-1); ++i; ++index)
image.bits() [index] = buffer[i];
image.save(image, “PNG”);
delete temp;

Also, I am getting different images from UDP, so the size of the image is not fixed every time.

[SGaist]

Hi and welcome to devnet,

QImage doesn't support floating point types. Did you convert it before sending it ?

[connecting_dots]

@SGaist Thanks. I am trying to convert it into quint32 but still not working out for me. I guess, I am getting confused in extracting each float value from datastream. Also readRawdata and readBytes only supports char s it gives me error saying invalid conversion.

[SGaist]

What kind of images are that in the first place ?
Where do they come from ?