How can I convert pixel data in QImage to another format?

Question

I receive an instance of QImage with arbitrary QImage::Format. How can I create another instance of QImage with a particular QImage::Format of my choosing so that the actual image data is converted from the arbitrary format to my format?

Example:

QImage convertFormat(const QImage &inputImage, QImage::format outputFormat)
{
    // What comes here?
}

//Usage
QImage converted = convertFormat(mySourceImage, QImage::Format_Grayscale8);

I am looking for a way to do this with existing code in Qt if possible (as opposed to writing my own pixel format conversion routines working on the low level).

score 6 · Accepted Answer · answered Mar 29 '17 at 23:16

6

Why not use convertToFormat? It has nearly the same syntax as you requested, though it's a member of QImage so you'd only pass in the format.

answered Mar 29 '17 at 23:16

artoonie

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5
14

LOL Can't beleive I didn't see that! – Mr. Developerdude Mar 29 '17 at 23:21
I was all cross-eyed apparently. The real question was different: http://stackoverflow.com/questions/43106069/how-to-convert-qvideoframe-with-yuv-data-to-qvideoframe-with-rgba32-data-in – Mr. Developerdude Mar 29 '17 at 23:43

How can I convert pixel data in QImage to another format?

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