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Asked: 2026-05-29T13:28:43+00:00

I am trying to convert uiimage to char array to use with libtiff. Thanks

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I am trying to convert uiimage to char array to use with libtiff.

Thanks

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  1. Editorial Team

    Here is the easiest way that I know of to get the bytes of a UIImage:

    UIImage *someImage = ...;
CFDataRef pixelData = CGDataProviderCopyData(CGImageGetDataProvider(someImage.CGImage));
const UInt8 *data = CFDataGetBytePtr(pixelData);

    Data then is an array of bytes.

    EDIT:

    Here is how you get an char array:

    const unsigned char * buffer =  CFDataGetBytePtr(pixelData);

    EDIT 2:

    Try casting it to char:

    char * buffer = (char *)CFDataGetBytePtr(pixelData);
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