pike.git/src/post_modules/GTK2/source/encode_truecolor.c:1a0554dba9de7916934dde6f1ef77d042d1347b0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 /* || This file is part of Pike. For copyright information see COPYRIGHT. || Pike is distributed under GPL, LGPL and MPL. See the file COPYING || for more information. || $Id: encode_truecolor.c,v 1.1 2005/07/28 15:19:36 nilsson Exp $ */ static unsigned char swap_bits[256] = { 0,128,64,192,32,160,96,224,16,144,80,208,48,176,112, 240,8,136,72,200,40,168,104,232,24,152,88,216,56,184, 120,248,4,132,68,196,36,164,100,228,20,148,84,212,52, 180,116,244,12,140,76,204,44,172,108,236,28,156,92,220, 60,188,124,252,2,130,66,194,34,162,98,226,18,146,82, 210,50,178,114,242,10,138,74,202,42,170,106,234,26,154, 90,218,58,186,122,250,6,134,70,198,38,166,102,230,22, 150,86,214,54,182,118,246,14,142,78,206,46,174,110,238, 30,158,94,222,62,190,126,254,1,129,65,193,33,161,97, 225,17,145,81,209,49,177,113,241,9,137,73,201,41,169, 105,233,25,153,89,217,57,185,121,249,5,133,69,197,37, 165,101,229,21,149,85,213,53,181,117,245,13,141,77,205, 45,173,109,237,29,157,93,221,61,189,125,253,3,131,67, 195,35,163,99,227,19,147,83,211,51,179,115,243,11,139, 75,203,43,171,107,235,27,155,91,219,59,187,123,251,7, 135,71,199,39,167,103,231,23,151,87,215,55,183,119,247, 15,143,79,207,47,175,111,239,31,159,95,223,63,191,127,255}; static void encode_truecolor_24_rgb_swapped( rgb_group *s, unsigned char *d, int q, int w ) { while(q--) { *(d++) = s->b; *(d++) = s->g; *(d++) = (s++)->r; } } static void encode_truecolor_24_rgb( rgb_group *s, unsigned char *d, int q, int w ) { MEMCPY(d,(unsigned char *)s,q); } static void encode_truecolor_24_rgb_al32_swapped( rgb_group *s, unsigned char *d, int q, int w ) { int l; while(q) { l=w; while(l--) { *(d++) = s->b; *(d++) = s->g; *(d++) = (s++)->r; q--; } d += (4-((w*3)&3))&3; } } static void encode_truecolor_24_rgb_al32( rgb_group *s, unsigned char *d, int q, int w ) { int l; while(q) { for(l=0; l<(q/w)/3; l++) { MEMCPY(d,(unsigned char *)s,w*3); d += (w*3+3)&~3; } } } #define encode_truecolor_24_bgr encode_truecolor_24_rgb_swapped #define encode_truecolor_24_bgr_swapped encode_truecolor_24_rgb #define encode_truecolor_24_bgr_al32 encode_truecolor_24_rgb_al32_swapped #define encode_truecolor_24_bgr_al32_swapped encode_truecolor_24_rgb_al32 static void encode_truecolor_32_argb_swapped( rgb_group *s, unsigned char *d, int q,int w ) { int *dp = (int *)d; #if PIKE_BYTEORDER==1234 while(q--){ *(dp++) = (s->r<<16) | (s->g<<8) | (s)->b;s++;} #else while(q--){ *(dp++) = ((s->r) | (s->g<<8) | (s)->b<<16)<<8;s++;} #endif } static void encode_truecolor_32_argb( rgb_group *s, unsigned char *d, int q,int w ) { int *dp = (int *)d; #if PIKE_BYTEORDER==4321 while(q--) {*(dp++) = (s->r<<16) | (s->g<<8) | (s)->b;s++;} #else while(q--) {*(dp++) = ((s->r) | (s->g<<8) | (s)->b<<16)<<8;s++;} #endif } static void encode_truecolor_32_abgr( rgb_group *s, unsigned char *d, int q,int w ) { while(q--) { *(d++) = 0; *(d++) = s->b; *(d++) = s->g; *(d++) = (s++)->r; } } static void encode_truecolor_32_abgr_swapped( rgb_group *s, unsigned char *d, int q,int w ) { while(q--) { *(d++) = s->r; *(d++) = s->g; *(d++) = (s++)->b; *(d++) = 0; } } #define ENCODE_8(X,Y,Z) \ static void encode_truecolor_##X##_##Y( rgb_group *s, unsigned char *d, int q,int w ) \ { \ while(q--) \ {*(d++)=(Z);s++;} \ } \ \ static void encode_truecolor_##X##_##Y##_swapped( rgb_group *s, unsigned char *d, int q ,int w) \ { \ while(q--) \ {*(d++)=(Z);s++;} \ } #if PIKE_BYTEORDER == 1234 #define ENCODE_16(X,Y,Z) \ static void encode_truecolor_##X##_##Y( rgb_group *s, unsigned char *d, int q,int w ) \ { \ unsigned short *dp = (unsigned short *)d; \ while(q--) \ {*(dp++) = (Z);s++;} \ } \ \ static void encode_truecolor_##X##_##Y##_swapped( rgb_group *s, unsigned char *d, int q ,int w) \ { \ while(q--) \ { \ unsigned short v = (Z); \ *(d++)=v&255; \ *(d++)=v>>8;s++; \ } \ } #else #define ENCODE_16(X,Y,Z) \ static void encode_truecolor_##X##_##Y( rgb_group *s, unsigned char *d, int q,int w ) \ { \ while(q--) \ { \ unsigned short v = (Z); \ *(d++)=v>>8; \ *(d++)=v&255;s++; \ } \ } \ \ static void encode_truecolor_##X##_##Y##_swapped( rgb_group *s, unsigned char *d, int q ,int w) \ { \ unsigned short *dp = (unsigned short *)d; \ while(q--) \ {*(dp++) = (Z);s++;} \ } #endif ENCODE_16(565,rgb,(((s->r>>3)<<6) | (s->g>>2))<<5 | (s->b>>3)); ENCODE_16(565,bgr,(((s->b>>3)<<6) | (s->g>>2))<<5 | (s->r>>3)); ENCODE_16(555,rgb,(((s->r>>3)<<5) | (s->g>>3))<<5 | (s->b>>3)); ENCODE_16(555,bgr,(((s->b>>3)<<5) | (s->g>>3))<<5 | (s->r>>3)); ENCODE_8(232,rgb,(((s->r>>6)<<3) | (s->g>>5))<<2 | (s->b>>6)); ENCODE_8(332,rgb,(((s->r>>5)<<3) | (s->g>>5))<<2 | (s->b>>6)); ENCODE_8(242,rgb,(((s->r>>5)<<4) | (s->g>>4))<<2 | (s->b>>6)); ENCODE_8(233,rgb,(((s->r>>5)<<3) | (s->g>>4))<<3 | (s->b>>5)); ENCODE_8(232,bgr,(((s->b>>6)<<3) | (s->g>>5))<<2 | (s->r>>6)); ENCODE_8(332,bgr,(((s->b>>5)<<3) | (s->g>>5))<<2 | (s->r>>6)); ENCODE_8(242,bgr,(((s->b>>5)<<4) | (s->g>>4))<<2 | (s->r>>6)); ENCODE_8(233,bgr,(((s->b>>5)<<3) | (s->g>>4))<<3 | (s->r>>5)); static void encode_truecolor_generic(int rbits, int rshift, int gbits, int gshift, int bbits, int bshift, int bpp, int alignbits,int swap_bytes, struct image *img, unsigned char *dest, int len) { unsigned char *d = dest; int x,y; rgb_group *s; s=img->img; if(!alignbits) alignbits=1; #define OPTIMIZE(rb,rs,gb,gs,bb,bs,al,fun) do { \ if(rbits==rb && rshift==rs && gbits==gb && gshift==gs && \ bbits==bb && bshift==bs && alignbits==al) { \ DEBUG_PF(("Optimized case %s%s\n", #fun, swap_bytes?"_swapped":"")); \ if (swap_bytes) \ fun##_swapped(s, (void *)dest, img->xsize*img->ysize, img->xsize); \ else \ fun(s,(void *)dest,img->xsize*img->ysize,img->xsize); \ return; \ } \ } while(0) switch(bpp) { case 32: /* 4 alternatives */ OPTIMIZE(8,16,8,8,8,0,1,encode_truecolor_32_argb); OPTIMIZE(8,0,8,8,8,16,1,encode_truecolor_32_abgr); break; case 24: /* 8 alternatives */ OPTIMIZE(8,16,8,8,8,0,32,encode_truecolor_24_rgb_al32); OPTIMIZE(8,0,8,8,8,16,32,encode_truecolor_24_bgr_al32); OPTIMIZE(8,16,8,8,8,0,1,encode_truecolor_24_rgb); OPTIMIZE(8,0,8,8,8,16,1,encode_truecolor_24_bgr); break; case 16: /* 8 alternatives */ OPTIMIZE(5,11,6,5,5,0,1,encode_truecolor_565_rgb); OPTIMIZE(5,10,5,5,5,0,1,encode_truecolor_555_rgb); OPTIMIZE(5,0,6,5,5,11,1,encode_truecolor_565_bgr); OPTIMIZE(5,0,5,5,5,10,1,encode_truecolor_555_bgr); break; case 8: /* 16 alternatives */ OPTIMIZE(2,5,3,2,2,0,1,encode_truecolor_232_rgb); OPTIMIZE(3,5,3,2,2,0,1,encode_truecolor_332_rgb); OPTIMIZE(2,6,4,2,2,0,1,encode_truecolor_242_rgb); OPTIMIZE(2,6,3,3,3,0,1,encode_truecolor_233_rgb); OPTIMIZE(2,0,3,2,2,5,1,encode_truecolor_232_bgr); OPTIMIZE(3,0,3,2,2,5,1,encode_truecolor_332_bgr); OPTIMIZE(2,0,4,2,2,6,1,encode_truecolor_242_bgr); OPTIMIZE(2,0,3,3,3,6,1,encode_truecolor_233_bgr); break; } #undef OPTIMIZE DEBUG_PF(("Generic encode_truecolor for r%dxg%dxb%d (%d bpp, shift=r%d,g%d,b%d)\n", rbits,gbits,bbits,bpp,rshift,gshift,bshift)); { int rfmask,gfmask,bfmask; int rfshift,gfshift,bfshift,rzshift,gzshift,bzshift; int bpshift,blinemod,bit; *d=0; rfshift=rshift-(sizeof(COLORTYPE)*8-rbits); gfshift=gshift-(sizeof(COLORTYPE)*8-gbits); bfshift=bshift-(sizeof(COLORTYPE)*8-bbits); if (rfshift<0) rzshift=-rfshift,rfshift=0; else rzshift=0; if (gfshift<0) gzshift=-gfshift,gfshift=0; else gzshift=0; if (bfshift<0) bzshift=-bfshift,bfshift=0; else bzshift=0; rfmask=(((1<<rbits)-1)<<(sizeof(COLORTYPE)*8-rbits)); gfmask=(((1<<gbits)-1)<<(sizeof(COLORTYPE)*8-gbits)); bfmask=(((1<<bbits)-1)<<(sizeof(COLORTYPE)*8-bbits)); bpshift=sizeof(unsigned long)*8-bpp; blinemod=alignbits-(((img->xsize*bpp+7)&~7)%alignbits); if(blinemod==alignbits) blinemod=0; else blinemod>>=3; bit=0; y = img->ysize; while (y--) { int bp; x=img->xsize; while (x--) { register unsigned long b = ((((s->r&rfmask)>>rzshift)<<rfshift)| (((s->g&gfmask)>>gzshift)<<gfshift)| (((s->b&bfmask)>>bzshift)<<bfshift))<<bpshift; bp = bpp; while (bp>8-bit) { if(bit) *d|=(unsigned char)(b>>(24+bit)); else *d=(unsigned char)(b>>24); b<<=8-bit; bp-=8-bit; bit=0; d++; } if(bit) *d|=b>>(24+bit); else *d=b>>24; bit+=bp; if (bit==8) ++d,bit=0; s++; } if(!y) break; if(bit) ++d,bit=0; bp=blinemod; while (bp--) *(++d)=0; } } if (swap_bytes) { d=dest; x=len; switch (bpp) { case 32: while (x>=4) { d[0]^=d[3],d[3]^=d[0],d[0]^=d[3]; d[1]^=d[2],d[2]^=d[1],d[1]^=d[2]; d+=4; x-=4; } break; case 24: while (x>=3) { d[0]^=d[2],d[2]^=d[0],d[0]^=d[2]; d+=3; x-=3; } break; case 16: while (x>=2) { d[0]^=d[1],d[1]^=d[0],d[0]^=d[1]; d+=2; x-=2; } break; case 1: while (x--) {*(d)=swap_bits[*d]; d++; } break; } } } static INLINE void examine_mask(unsigned int x, int *bits,int *shift) { *bits=0; *shift=0; if (!x) return; while (!(x&1)) x>>=1,(*shift)++; while (x&1) x>>=1,(*bits)++; } void pgtk_encode_grey(struct image *i, unsigned char *dest, int bpp, int bpl ) { int x, y; rgb_group *s = i->img; switch(bpp) { case 1: for(y=0; y<i->ysize; y++) { unsigned char *d = dest+y*bpl; for(x=0; x<i->xsize; x++,s++) *d = (s->r + (s->g<<1) + s->b)>>2; } return; case 2: for(y=0; y<i->ysize; y++) { unsigned short *d = (unsigned short *)(dest+y*bpl); for(x=0; x<i->xsize; x++,s++) *d = (s->r + (s->g<<1) + s->b)<<6; } return; default: Pike_error("This greyscale is to wide for me!\n"); } } void pgtk_encode_truecolor_masks(struct image *i, int bitspp, int pad, int byteorder, unsigned int red_mask, unsigned int green_mask, unsigned int blue_mask, unsigned char *buffer, int debug_len) { int rbits,rshift,gbits,gshift,bbits,bshift; examine_mask(red_mask,&rbits,&rshift); examine_mask(green_mask,&gbits,&gshift); examine_mask(blue_mask,&bbits,&bshift); encode_truecolor_generic( rbits, rshift, gbits, gshift, bbits, bshift, bitspp, pad, byteorder, i, buffer, debug_len ); }

pike.git/ src/ post_modules/ GTK2/ source/ encode_truecolor.c > 1a0554dba9de7916934dde6f1ef77d042d1347b0 [Annotate]