Re: Incompatible types error using vImage

• Subject: Re: Incompatible types error using vImage
• From: Fritz Anderson <email@hidden>
• Date: Wed, 31 Mar 2004 10:54:32 -0600

I'm trying to package the vImage function
"vImageConvert_ChunkyToPlanar8" inside an easier to use
NSBitmapImageRep category like the following but it keeps choking on
the indicated line. I'm sure it's a simple "C" syntax error, but
nothing I've tried satisfies the compiler. Could someone point out what
I'm doing wrong?

vImage_Buffer *result = (vImage_Buffer *) malloc(3 *
sizeof(vImage_Buffer));

err = vImageConvert_ChunkyToPlanar8 (
(void *)sourceChannels,
//----------------------------- this is the problem line
---------------------------------
// this doesn't work
result,

// neither does this
(vImage_Buffer *) result,

// nor this
&result
/
/---------------------------------------------------------------------- -
-----------------------
3,
3,
[self pixelsWide],
[self pixelsHigh],
[self bytesPerRow],
flags
);
}

The function is defined like so in the vImage documentation:

vImage_Error vImageConvert_ChunkyToPlanar8 (
const void *srcChannels[],
const vImage_Buffer *destPlanarBuffers[],
unsigned int channelCount,
size_t srcStrideBytes,
unsigned int srcWidth,
unsigned int srcHeight,
unsigned int srcRowBytes,
vImage_Flags flags
);

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