61 lines
949 B
C
61 lines
949 B
C
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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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#include <memdraw.h>
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#include <bio.h>
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#include "imagefile.h"
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/* Separate colors, if not a grey scale or bitmap, into one byte per color per pixel, no alpha or X */
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/* Result is GREY[1248] or RGB24 */
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int drawlog2[] = {
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0, 0, 1, 0, 2, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0,
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4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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5
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};
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static
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int
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notrans(ulong chan)
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{
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switch(chan){
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case GREY1:
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case GREY2:
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case GREY4:
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case GREY8:
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case RGB24:
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return 1;
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}
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return 0;
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}
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Image*
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multichan(Image *i)
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{
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Image *ni;
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if(notrans(i->chan))
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return i;
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ni = allocimage(display, i->r, RGB24, 0, DNofill);
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if(ni == nil)
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return ni;
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draw(ni, ni->r, i, nil, i->r.min);
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return ni;
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}
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Memimage*
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memmultichan(Memimage *i)
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{
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Memimage *ni;
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if(notrans(i->chan))
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return i;
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ni = allocmemimage(i->r, RGB24);
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if(ni == nil)
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return ni;
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memimagedraw(ni, ni->r, i, i->r.min, nil, i->r.min, S);
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return ni;
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}
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