> > My comment is not very good, in fact on some cameras I need to swap the 
> > bytes
> > to have correct JPEG data (so this is not an endianness issue I think).
> > Maybe there is a macro to swap bytes in a buffer? I cannot find it.
> 
> Sorry, there's a swab32, but no swab16. I misremembered.

Its just called "swab" for 16bit values and is a gcc builtin/string
function.

Alan

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