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Hello,

> ok, i'm trying to build some software, and i get this error:
>
> image.c:197: error: invalid operands to binary >>
> image.c:197: error: invalid operands to binary >>
> image.c:197: error: invalid operands to binary >>
> image.c:198: error: invalid operands to binary &
>
> here is the offending code:
>
> g = ( ((p >> 24) & 0xff)  + ((p >> 16) & 0xff) + ((p >> 8) & 0xff)) / 
> 3;
This seems to calculate the brightness of a pixel (average of the 
colour components)...

> p = (g << 24) | (g << 16) | (g << 8) | (p & 0xff);
... and this makes a grey one from the brightness value calculated 
above.

How are p and g declared? Should be uint32_t to be portable.

have fun
Michael
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