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#include "standard.h" |
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#include "color.h" |
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#include "driver.h" |
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/* histogram resolution */ |
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#define NRED 24 |
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static struct tabent { |
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long sum[3]; /* sum of colors using this entry */ |
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int n; /* number of colors */ |
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BYTE ent[3]; /* current table value */ |
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uby8 ent[3]; /* current table value */ |
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} *clrtab = NULL; |
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/* color cube partition */ |
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static CNODE *ctree = NULL; |
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/* our color correction map */ |
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static BYTE clrmap[3][256]; |
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static uby8 clrmap[3][256]; |
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/* histogram of colors used */ |
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static unsigned short histo[NRED][NGRN][NBLU]; |
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/* initial color cube boundary */ |
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int |
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get_pixel(col, set_pixel) /* get pixel for color */ |
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COLOR col; |
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void (*set_pixel)(); |
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get_pixel( /* get pixel for color */ |
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COLOR col, |
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dr_newcolrf_t *newcolr |
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) |
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{ |
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int r, g, b; |
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int cv[3]; |
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register CNODE *tp; |
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register int h; |
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CNODE *tp; |
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int h; |
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/* map color */ |
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r = map_col(col,RED); |
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g = map_col(col,GRN); |
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h, r, g, b, clrtab[h].n); |
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eputs(errmsg); |
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#endif |
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(*set_pixel)(h, r, g, b); |
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(*newcolr)(h, r, g, b); |
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} |
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return(h); /* return pixel value */ |
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} |
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make_gmap(gam) /* make gamma correction map */ |
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double gam; |
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{ |
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register int i; |
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int i; |
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for (i = 0; i < 256; i++) |
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clrmap[RED][i] = |
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void |
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set_cmap(rmap, gmap, bmap) /* set custom color correction map */ |
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BYTE *rmap, *gmap, *bmap; |
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uby8 *rmap, *gmap, *bmap; |
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{ |
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memcpy((void *)clrmap[RED], (void *)rmap, 256); |
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memcpy((void *)clrmap[GRN], (void *)gmap, 256); |
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void |
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map_color(rgb, col) /* map a color to a byte triplet */ |
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BYTE rgb[3]; |
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uby8 rgb[3]; |
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COLOR col; |
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{ |
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rgb[RED] = map_col(col,RED); |
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static void |
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cut(tree, level, box, c0, c1) /* partition color space */ |
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register CNODE *tree; |
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CNODE *tree; |
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int level; |
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register int box[3][2]; |
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int box[3][2]; |
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int c0, c1; |
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{ |
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int kb[3][2]; |
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static int |
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split(box) /* find median cut for box */ |
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register int box[3][2]; |
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int box[3][2]; |
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{ |
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#define c0 r |
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register int r, g, b; |
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int r, g, b; |
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int pri; |
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long t[HMAX], med; |
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/* find dominant axis */ |