1 ; 2 ; jccolext.asm - colorspace conversion (MMX) 3 ; 4 ; Copyright 2009 Pierre Ossman <ossman (a] cendio.se> for Cendio AB 5 ; 6 ; Based on 7 ; x86 SIMD extension for IJG JPEG library 8 ; Copyright (C) 1999-2006, MIYASAKA Masaru. 9 ; For conditions of distribution and use, see copyright notice in jsimdext.inc 10 ; 11 ; This file should be assembled with NASM (Netwide Assembler), 12 ; can *not* be assembled with Microsoft's MASM or any compatible 13 ; assembler (including Borland's Turbo Assembler). 14 ; NASM is available from http://nasm.sourceforge.net/ or 15 ; http://sourceforge.net/project/showfiles.php?group_id=6208 16 ; 17 ; [TAB8] 18 19 %include "jcolsamp.inc" 20 21 ; -------------------------------------------------------------------------- 22 ; 23 ; Convert some rows of samples to the output colorspace. 24 ; 25 ; GLOBAL(void) 26 ; jsimd_rgb_ycc_convert_mmx (JDIMENSION img_width, 27 ; JSAMPARRAY input_buf, JSAMPIMAGE output_buf, 28 ; JDIMENSION output_row, int num_rows); 29 ; 30 31 %define img_width(b) (b)+8 ; JDIMENSION img_width 32 %define input_buf(b) (b)+12 ; JSAMPARRAY input_buf 33 %define output_buf(b) (b)+16 ; JSAMPIMAGE output_buf 34 %define output_row(b) (b)+20 ; JDIMENSION output_row 35 %define num_rows(b) (b)+24 ; int num_rows 36 37 %define original_ebp ebp+0 38 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] 39 %define WK_NUM 8 40 %define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr 41 42 align 16 43 global EXTN(jsimd_rgb_ycc_convert_mmx) 44 45 EXTN(jsimd_rgb_ycc_convert_mmx): 46 push ebp 47 mov eax,esp ; eax = original ebp 48 sub esp, byte 4 49 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits 50 mov [esp],eax 51 mov ebp,esp ; ebp = aligned ebp 52 lea esp, [wk(0)] 53 pushpic eax ; make a room for GOT address 54 push ebx 55 ; push ecx ; need not be preserved 56 ; push edx ; need not be preserved 57 push esi 58 push edi 59 60 get_GOT ebx ; get GOT address 61 movpic POINTER [gotptr], ebx ; save GOT address 62 63 mov ecx, JDIMENSION [img_width(eax)] ; num_cols 64 test ecx,ecx 65 jz near .return 66 67 push ecx 68 69 mov esi, JSAMPIMAGE [output_buf(eax)] 70 mov ecx, JDIMENSION [output_row(eax)] 71 mov edi, JSAMPARRAY [esi+0*SIZEOF_JSAMPARRAY] 72 mov ebx, JSAMPARRAY [esi+1*SIZEOF_JSAMPARRAY] 73 mov edx, JSAMPARRAY [esi+2*SIZEOF_JSAMPARRAY] 74 lea edi, [edi+ecx*SIZEOF_JSAMPROW] 75 lea ebx, [ebx+ecx*SIZEOF_JSAMPROW] 76 lea edx, [edx+ecx*SIZEOF_JSAMPROW] 77 78 pop ecx 79 80 mov esi, JSAMPARRAY [input_buf(eax)] 81 mov eax, INT [num_rows(eax)] 82 test eax,eax 83 jle near .return 84 alignx 16,7 85 .rowloop: 86 pushpic eax 87 push edx 88 push ebx 89 push edi 90 push esi 91 push ecx ; col 92 93 mov esi, JSAMPROW [esi] ; inptr 94 mov edi, JSAMPROW [edi] ; outptr0 95 mov ebx, JSAMPROW [ebx] ; outptr1 96 mov edx, JSAMPROW [edx] ; outptr2 97 movpic eax, POINTER [gotptr] ; load GOT address (eax) 98 99 cmp ecx, byte SIZEOF_MMWORD 100 jae short .columnloop 101 alignx 16,7 102 103 %if RGB_PIXELSIZE == 3 ; --------------- 104 105 .column_ld1: 106 push eax 107 push edx 108 lea ecx,[ecx+ecx*2] ; imul ecx,RGB_PIXELSIZE 109 test cl, SIZEOF_BYTE 110 jz short .column_ld2 111 sub ecx, byte SIZEOF_BYTE 112 xor eax,eax 113 mov al, BYTE [esi+ecx] 114 .column_ld2: 115 test cl, SIZEOF_WORD 116 jz short .column_ld4 117 sub ecx, byte SIZEOF_WORD 118 xor edx,edx 119 mov dx, WORD [esi+ecx] 120 shl eax, WORD_BIT 121 or eax,edx 122 .column_ld4: 123 movd mmA,eax 124 pop edx 125 pop eax 126 test cl, SIZEOF_DWORD 127 jz short .column_ld8 128 sub ecx, byte SIZEOF_DWORD 129 movd mmG, DWORD [esi+ecx] 130 psllq mmA, DWORD_BIT 131 por mmA,mmG 132 .column_ld8: 133 test cl, SIZEOF_MMWORD 134 jz short .column_ld16 135 movq mmG,mmA 136 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] 137 mov ecx, SIZEOF_MMWORD 138 jmp short .rgb_ycc_cnv 139 .column_ld16: 140 test cl, 2*SIZEOF_MMWORD 141 mov ecx, SIZEOF_MMWORD 142 jz short .rgb_ycc_cnv 143 movq mmF,mmA 144 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] 145 movq mmG, MMWORD [esi+1*SIZEOF_MMWORD] 146 jmp short .rgb_ycc_cnv 147 alignx 16,7 148 149 .columnloop: 150 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] 151 movq mmG, MMWORD [esi+1*SIZEOF_MMWORD] 152 movq mmF, MMWORD [esi+2*SIZEOF_MMWORD] 153 154 .rgb_ycc_cnv: 155 ; mmA=(00 10 20 01 11 21 02 12) 156 ; mmG=(22 03 13 23 04 14 24 05) 157 ; mmF=(15 25 06 16 26 07 17 27) 158 159 movq mmD,mmA 160 psllq mmA,4*BYTE_BIT ; mmA=(-- -- -- -- 00 10 20 01) 161 psrlq mmD,4*BYTE_BIT ; mmD=(11 21 02 12 -- -- -- --) 162 163 punpckhbw mmA,mmG ; mmA=(00 04 10 14 20 24 01 05) 164 psllq mmG,4*BYTE_BIT ; mmG=(-- -- -- -- 22 03 13 23) 165 166 punpcklbw mmD,mmF ; mmD=(11 15 21 25 02 06 12 16) 167 punpckhbw mmG,mmF ; mmG=(22 26 03 07 13 17 23 27) 168 169 movq mmE,mmA 170 psllq mmA,4*BYTE_BIT ; mmA=(-- -- -- -- 00 04 10 14) 171 psrlq mmE,4*BYTE_BIT ; mmE=(20 24 01 05 -- -- -- --) 172 173 punpckhbw mmA,mmD ; mmA=(00 02 04 06 10 12 14 16) 174 psllq mmD,4*BYTE_BIT ; mmD=(-- -- -- -- 11 15 21 25) 175 176 punpcklbw mmE,mmG ; mmE=(20 22 24 26 01 03 05 07) 177 punpckhbw mmD,mmG ; mmD=(11 13 15 17 21 23 25 27) 178 179 pxor mmH,mmH 180 181 movq mmC,mmA 182 punpcklbw mmA,mmH ; mmA=(00 02 04 06) 183 punpckhbw mmC,mmH ; mmC=(10 12 14 16) 184 185 movq mmB,mmE 186 punpcklbw mmE,mmH ; mmE=(20 22 24 26) 187 punpckhbw mmB,mmH ; mmB=(01 03 05 07) 188 189 movq mmF,mmD 190 punpcklbw mmD,mmH ; mmD=(11 13 15 17) 191 punpckhbw mmF,mmH ; mmF=(21 23 25 27) 192 193 %else ; RGB_PIXELSIZE == 4 ; ----------- 194 195 .column_ld1: 196 test cl, SIZEOF_MMWORD/8 197 jz short .column_ld2 198 sub ecx, byte SIZEOF_MMWORD/8 199 movd mmA, DWORD [esi+ecx*RGB_PIXELSIZE] 200 .column_ld2: 201 test cl, SIZEOF_MMWORD/4 202 jz short .column_ld4 203 sub ecx, byte SIZEOF_MMWORD/4 204 movq mmF,mmA 205 movq mmA, MMWORD [esi+ecx*RGB_PIXELSIZE] 206 .column_ld4: 207 test cl, SIZEOF_MMWORD/2 208 mov ecx, SIZEOF_MMWORD 209 jz short .rgb_ycc_cnv 210 movq mmD,mmA 211 movq mmC,mmF 212 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] 213 movq mmF, MMWORD [esi+1*SIZEOF_MMWORD] 214 jmp short .rgb_ycc_cnv 215 alignx 16,7 216 217 .columnloop: 218 movq mmA, MMWORD [esi+0*SIZEOF_MMWORD] 219 movq mmF, MMWORD [esi+1*SIZEOF_MMWORD] 220 movq mmD, MMWORD [esi+2*SIZEOF_MMWORD] 221 movq mmC, MMWORD [esi+3*SIZEOF_MMWORD] 222 223 .rgb_ycc_cnv: 224 ; mmA=(00 10 20 30 01 11 21 31) 225 ; mmF=(02 12 22 32 03 13 23 33) 226 ; mmD=(04 14 24 34 05 15 25 35) 227 ; mmC=(06 16 26 36 07 17 27 37) 228 229 movq mmB,mmA 230 punpcklbw mmA,mmF ; mmA=(00 02 10 12 20 22 30 32) 231 punpckhbw mmB,mmF ; mmB=(01 03 11 13 21 23 31 33) 232 233 movq mmG,mmD 234 punpcklbw mmD,mmC ; mmD=(04 06 14 16 24 26 34 36) 235 punpckhbw mmG,mmC ; mmG=(05 07 15 17 25 27 35 37) 236 237 movq mmE,mmA 238 punpcklwd mmA,mmD ; mmA=(00 02 04 06 10 12 14 16) 239 punpckhwd mmE,mmD ; mmE=(20 22 24 26 30 32 34 36) 240 241 movq mmH,mmB 242 punpcklwd mmB,mmG ; mmB=(01 03 05 07 11 13 15 17) 243 punpckhwd mmH,mmG ; mmH=(21 23 25 27 31 33 35 37) 244 245 pxor mmF,mmF 246 247 movq mmC,mmA 248 punpcklbw mmA,mmF ; mmA=(00 02 04 06) 249 punpckhbw mmC,mmF ; mmC=(10 12 14 16) 250 251 movq mmD,mmB 252 punpcklbw mmB,mmF ; mmB=(01 03 05 07) 253 punpckhbw mmD,mmF ; mmD=(11 13 15 17) 254 255 movq mmG,mmE 256 punpcklbw mmE,mmF ; mmE=(20 22 24 26) 257 punpckhbw mmG,mmF ; mmG=(30 32 34 36) 258 259 punpcklbw mmF,mmH 260 punpckhbw mmH,mmH 261 psrlw mmF,BYTE_BIT ; mmF=(21 23 25 27) 262 psrlw mmH,BYTE_BIT ; mmH=(31 33 35 37) 263 264 %endif ; RGB_PIXELSIZE ; --------------- 265 266 ; mm0=(R0 R2 R4 R6)=RE, mm2=(G0 G2 G4 G6)=GE, mm4=(B0 B2 B4 B6)=BE 267 ; mm1=(R1 R3 R5 R7)=RO, mm3=(G1 G3 G5 G7)=GO, mm5=(B1 B3 B5 B7)=BO 268 269 ; (Original) 270 ; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B 271 ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE 272 ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE 273 ; 274 ; (This implementation) 275 ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G 276 ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE 277 ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE 278 279 movq MMWORD [wk(0)], mm0 ; wk(0)=RE 280 movq MMWORD [wk(1)], mm1 ; wk(1)=RO 281 movq MMWORD [wk(2)], mm4 ; wk(2)=BE 282 movq MMWORD [wk(3)], mm5 ; wk(3)=BO 283 284 movq mm6,mm1 285 punpcklwd mm1,mm3 286 punpckhwd mm6,mm3 287 movq mm7,mm1 288 movq mm4,mm6 289 pmaddwd mm1,[GOTOFF(eax,PW_F0299_F0337)] ; mm1=ROL*FIX(0.299)+GOL*FIX(0.337) 290 pmaddwd mm6,[GOTOFF(eax,PW_F0299_F0337)] ; mm6=ROH*FIX(0.299)+GOH*FIX(0.337) 291 pmaddwd mm7,[GOTOFF(eax,PW_MF016_MF033)] ; mm7=ROL*-FIX(0.168)+GOL*-FIX(0.331) 292 pmaddwd mm4,[GOTOFF(eax,PW_MF016_MF033)] ; mm4=ROH*-FIX(0.168)+GOH*-FIX(0.331) 293 294 movq MMWORD [wk(4)], mm1 ; wk(4)=ROL*FIX(0.299)+GOL*FIX(0.337) 295 movq MMWORD [wk(5)], mm6 ; wk(5)=ROH*FIX(0.299)+GOH*FIX(0.337) 296 297 pxor mm1,mm1 298 pxor mm6,mm6 299 punpcklwd mm1,mm5 ; mm1=BOL 300 punpckhwd mm6,mm5 ; mm6=BOH 301 psrld mm1,1 ; mm1=BOL*FIX(0.500) 302 psrld mm6,1 ; mm6=BOH*FIX(0.500) 303 304 movq mm5,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm5=[PD_ONEHALFM1_CJ] 305 306 paddd mm7,mm1 307 paddd mm4,mm6 308 paddd mm7,mm5 309 paddd mm4,mm5 310 psrld mm7,SCALEBITS ; mm7=CbOL 311 psrld mm4,SCALEBITS ; mm4=CbOH 312 packssdw mm7,mm4 ; mm7=CbO 313 314 movq mm1, MMWORD [wk(2)] ; mm1=BE 315 316 movq mm6,mm0 317 punpcklwd mm0,mm2 318 punpckhwd mm6,mm2 319 movq mm5,mm0 320 movq mm4,mm6 321 pmaddwd mm0,[GOTOFF(eax,PW_F0299_F0337)] ; mm0=REL*FIX(0.299)+GEL*FIX(0.337) 322 pmaddwd mm6,[GOTOFF(eax,PW_F0299_F0337)] ; mm6=REH*FIX(0.299)+GEH*FIX(0.337) 323 pmaddwd mm5,[GOTOFF(eax,PW_MF016_MF033)] ; mm5=REL*-FIX(0.168)+GEL*-FIX(0.331) 324 pmaddwd mm4,[GOTOFF(eax,PW_MF016_MF033)] ; mm4=REH*-FIX(0.168)+GEH*-FIX(0.331) 325 326 movq MMWORD [wk(6)], mm0 ; wk(6)=REL*FIX(0.299)+GEL*FIX(0.337) 327 movq MMWORD [wk(7)], mm6 ; wk(7)=REH*FIX(0.299)+GEH*FIX(0.337) 328 329 pxor mm0,mm0 330 pxor mm6,mm6 331 punpcklwd mm0,mm1 ; mm0=BEL 332 punpckhwd mm6,mm1 ; mm6=BEH 333 psrld mm0,1 ; mm0=BEL*FIX(0.500) 334 psrld mm6,1 ; mm6=BEH*FIX(0.500) 335 336 movq mm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm1=[PD_ONEHALFM1_CJ] 337 338 paddd mm5,mm0 339 paddd mm4,mm6 340 paddd mm5,mm1 341 paddd mm4,mm1 342 psrld mm5,SCALEBITS ; mm5=CbEL 343 psrld mm4,SCALEBITS ; mm4=CbEH 344 packssdw mm5,mm4 ; mm5=CbE 345 346 psllw mm7,BYTE_BIT 347 por mm5,mm7 ; mm5=Cb 348 movq MMWORD [ebx], mm5 ; Save Cb 349 350 movq mm0, MMWORD [wk(3)] ; mm0=BO 351 movq mm6, MMWORD [wk(2)] ; mm6=BE 352 movq mm1, MMWORD [wk(1)] ; mm1=RO 353 354 movq mm4,mm0 355 punpcklwd mm0,mm3 356 punpckhwd mm4,mm3 357 movq mm7,mm0 358 movq mm5,mm4 359 pmaddwd mm0,[GOTOFF(eax,PW_F0114_F0250)] ; mm0=BOL*FIX(0.114)+GOL*FIX(0.250) 360 pmaddwd mm4,[GOTOFF(eax,PW_F0114_F0250)] ; mm4=BOH*FIX(0.114)+GOH*FIX(0.250) 361 pmaddwd mm7,[GOTOFF(eax,PW_MF008_MF041)] ; mm7=BOL*-FIX(0.081)+GOL*-FIX(0.418) 362 pmaddwd mm5,[GOTOFF(eax,PW_MF008_MF041)] ; mm5=BOH*-FIX(0.081)+GOH*-FIX(0.418) 363 364 movq mm3,[GOTOFF(eax,PD_ONEHALF)] ; mm3=[PD_ONEHALF] 365 366 paddd mm0, MMWORD [wk(4)] 367 paddd mm4, MMWORD [wk(5)] 368 paddd mm0,mm3 369 paddd mm4,mm3 370 psrld mm0,SCALEBITS ; mm0=YOL 371 psrld mm4,SCALEBITS ; mm4=YOH 372 packssdw mm0,mm4 ; mm0=YO 373 374 pxor mm3,mm3 375 pxor mm4,mm4 376 punpcklwd mm3,mm1 ; mm3=ROL 377 punpckhwd mm4,mm1 ; mm4=ROH 378 psrld mm3,1 ; mm3=ROL*FIX(0.500) 379 psrld mm4,1 ; mm4=ROH*FIX(0.500) 380 381 movq mm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm1=[PD_ONEHALFM1_CJ] 382 383 paddd mm7,mm3 384 paddd mm5,mm4 385 paddd mm7,mm1 386 paddd mm5,mm1 387 psrld mm7,SCALEBITS ; mm7=CrOL 388 psrld mm5,SCALEBITS ; mm5=CrOH 389 packssdw mm7,mm5 ; mm7=CrO 390 391 movq mm3, MMWORD [wk(0)] ; mm3=RE 392 393 movq mm4,mm6 394 punpcklwd mm6,mm2 395 punpckhwd mm4,mm2 396 movq mm1,mm6 397 movq mm5,mm4 398 pmaddwd mm6,[GOTOFF(eax,PW_F0114_F0250)] ; mm6=BEL*FIX(0.114)+GEL*FIX(0.250) 399 pmaddwd mm4,[GOTOFF(eax,PW_F0114_F0250)] ; mm4=BEH*FIX(0.114)+GEH*FIX(0.250) 400 pmaddwd mm1,[GOTOFF(eax,PW_MF008_MF041)] ; mm1=BEL*-FIX(0.081)+GEL*-FIX(0.418) 401 pmaddwd mm5,[GOTOFF(eax,PW_MF008_MF041)] ; mm5=BEH*-FIX(0.081)+GEH*-FIX(0.418) 402 403 movq mm2,[GOTOFF(eax,PD_ONEHALF)] ; mm2=[PD_ONEHALF] 404 405 paddd mm6, MMWORD [wk(6)] 406 paddd mm4, MMWORD [wk(7)] 407 paddd mm6,mm2 408 paddd mm4,mm2 409 psrld mm6,SCALEBITS ; mm6=YEL 410 psrld mm4,SCALEBITS ; mm4=YEH 411 packssdw mm6,mm4 ; mm6=YE 412 413 psllw mm0,BYTE_BIT 414 por mm6,mm0 ; mm6=Y 415 movq MMWORD [edi], mm6 ; Save Y 416 417 pxor mm2,mm2 418 pxor mm4,mm4 419 punpcklwd mm2,mm3 ; mm2=REL 420 punpckhwd mm4,mm3 ; mm4=REH 421 psrld mm2,1 ; mm2=REL*FIX(0.500) 422 psrld mm4,1 ; mm4=REH*FIX(0.500) 423 424 movq mm0,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm0=[PD_ONEHALFM1_CJ] 425 426 paddd mm1,mm2 427 paddd mm5,mm4 428 paddd mm1,mm0 429 paddd mm5,mm0 430 psrld mm1,SCALEBITS ; mm1=CrEL 431 psrld mm5,SCALEBITS ; mm5=CrEH 432 packssdw mm1,mm5 ; mm1=CrE 433 434 psllw mm7,BYTE_BIT 435 por mm1,mm7 ; mm1=Cr 436 movq MMWORD [edx], mm1 ; Save Cr 437 438 sub ecx, byte SIZEOF_MMWORD 439 add esi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; inptr 440 add edi, byte SIZEOF_MMWORD ; outptr0 441 add ebx, byte SIZEOF_MMWORD ; outptr1 442 add edx, byte SIZEOF_MMWORD ; outptr2 443 cmp ecx, byte SIZEOF_MMWORD 444 jae near .columnloop 445 test ecx,ecx 446 jnz near .column_ld1 447 448 pop ecx ; col 449 pop esi 450 pop edi 451 pop ebx 452 pop edx 453 poppic eax 454 455 add esi, byte SIZEOF_JSAMPROW ; input_buf 456 add edi, byte SIZEOF_JSAMPROW 457 add ebx, byte SIZEOF_JSAMPROW 458 add edx, byte SIZEOF_JSAMPROW 459 dec eax ; num_rows 460 jg near .rowloop 461 462 emms ; empty MMX state 463 464 .return: 465 pop edi 466 pop esi 467 ; pop edx ; need not be preserved 468 ; pop ecx ; need not be preserved 469 pop ebx 470 mov esp,ebp ; esp <- aligned ebp 471 pop esp ; esp <- original ebp 472 pop ebp 473 ret 474 475 ; For some reason, the OS X linker does not honor the request to align the 476 ; segment unless we do this. 477 align 16 478
