1 ; 2 ; jccolext.asm - colorspace conversion (SSE2) 3 ; 4 ; x86 SIMD extension for IJG JPEG library 5 ; Copyright (C) 1999-2006, MIYASAKA Masaru. 6 ; For conditions of distribution and use, see copyright notice in jsimdext.inc 7 ; 8 ; This file should be assembled with NASM (Netwide Assembler), 9 ; can *not* be assembled with Microsoft's MASM or any compatible 10 ; assembler (including Borland's Turbo Assembler). 11 ; NASM is available from http://nasm.sourceforge.net/ or 12 ; http://sourceforge.net/project/showfiles.php?group_id=6208 13 ; 14 ; [TAB8] 15 16 %include "jcolsamp.inc" 17 18 ; -------------------------------------------------------------------------- 19 ; 20 ; Convert some rows of samples to the output colorspace. 21 ; 22 ; GLOBAL(void) 23 ; jsimd_rgb_ycc_convert_sse2 (JDIMENSION img_width, 24 ; JSAMPARRAY input_buf, JSAMPIMAGE output_buf, 25 ; JDIMENSION output_row, int num_rows); 26 ; 27 28 %define img_width(b) (b)+8 ; JDIMENSION img_width 29 %define input_buf(b) (b)+12 ; JSAMPARRAY input_buf 30 %define output_buf(b) (b)+16 ; JSAMPIMAGE output_buf 31 %define output_row(b) (b)+20 ; JDIMENSION output_row 32 %define num_rows(b) (b)+24 ; int num_rows 33 34 %define original_ebp ebp+0 35 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] 36 %define WK_NUM 8 37 %define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr 38 39 align 16 40 41 global EXTN(jsimd_rgb_ycc_convert_sse2) 42 43 EXTN(jsimd_rgb_ycc_convert_sse2): 44 push ebp 45 mov eax,esp ; eax = original ebp 46 sub esp, byte 4 47 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 48 mov [esp],eax 49 mov ebp,esp ; ebp = aligned ebp 50 lea esp, [wk(0)] 51 pushpic eax ; make a room for GOT address 52 push ebx 53 ; push ecx ; need not be preserved 54 ; push edx ; need not be preserved 55 push esi 56 push edi 57 58 get_GOT ebx ; get GOT address 59 movpic POINTER [gotptr], ebx ; save GOT address 60 61 mov ecx, JDIMENSION [img_width(eax)] 62 test ecx,ecx 63 jz near .return 64 65 push ecx 66 67 mov esi, JSAMPIMAGE [output_buf(eax)] 68 mov ecx, JDIMENSION [output_row(eax)] 69 mov edi, JSAMPARRAY [esi+0*SIZEOF_JSAMPARRAY] 70 mov ebx, JSAMPARRAY [esi+1*SIZEOF_JSAMPARRAY] 71 mov edx, JSAMPARRAY [esi+2*SIZEOF_JSAMPARRAY] 72 lea edi, [edi+ecx*SIZEOF_JSAMPROW] 73 lea ebx, [ebx+ecx*SIZEOF_JSAMPROW] 74 lea edx, [edx+ecx*SIZEOF_JSAMPROW] 75 76 pop ecx 77 78 mov esi, JSAMPARRAY [input_buf(eax)] 79 mov eax, INT [num_rows(eax)] 80 test eax,eax 81 jle near .return 82 alignx 16,7 83 .rowloop: 84 pushpic eax 85 push edx 86 push ebx 87 push edi 88 push esi 89 push ecx ; col 90 91 mov esi, JSAMPROW [esi] ; inptr 92 mov edi, JSAMPROW [edi] ; outptr0 93 mov ebx, JSAMPROW [ebx] ; outptr1 94 mov edx, JSAMPROW [edx] ; outptr2 95 movpic eax, POINTER [gotptr] ; load GOT address (eax) 96 97 cmp ecx, byte SIZEOF_XMMWORD 98 jae near .columnloop 99 alignx 16,7 100 101 %if RGB_PIXELSIZE == 3 ; --------------- 102 103 .column_ld1: 104 push eax 105 push edx 106 lea ecx,[ecx+ecx*2] ; imul ecx,RGB_PIXELSIZE 107 test cl, SIZEOF_BYTE 108 jz short .column_ld2 109 sub ecx, byte SIZEOF_BYTE 110 movzx eax, BYTE [esi+ecx] 111 .column_ld2: 112 test cl, SIZEOF_WORD 113 jz short .column_ld4 114 sub ecx, byte SIZEOF_WORD 115 movzx edx, WORD [esi+ecx] 116 shl eax, WORD_BIT 117 or eax,edx 118 .column_ld4: 119 movd xmmA,eax 120 pop edx 121 pop eax 122 test cl, SIZEOF_DWORD 123 jz short .column_ld8 124 sub ecx, byte SIZEOF_DWORD 125 movd xmmF, XMM_DWORD [esi+ecx] 126 pslldq xmmA, SIZEOF_DWORD 127 por xmmA,xmmF 128 .column_ld8: 129 test cl, SIZEOF_MMWORD 130 jz short .column_ld16 131 sub ecx, byte SIZEOF_MMWORD 132 movq xmmB, XMM_MMWORD [esi+ecx] 133 pslldq xmmA, SIZEOF_MMWORD 134 por xmmA,xmmB 135 .column_ld16: 136 test cl, SIZEOF_XMMWORD 137 jz short .column_ld32 138 movdqa xmmF,xmmA 139 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 140 mov ecx, SIZEOF_XMMWORD 141 jmp short .rgb_ycc_cnv 142 .column_ld32: 143 test cl, 2*SIZEOF_XMMWORD 144 mov ecx, SIZEOF_XMMWORD 145 jz short .rgb_ycc_cnv 146 movdqa xmmB,xmmA 147 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 148 movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD] 149 jmp short .rgb_ycc_cnv 150 alignx 16,7 151 152 .columnloop: 153 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 154 movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD] 155 movdqu xmmB, XMMWORD [esi+2*SIZEOF_XMMWORD] 156 157 .rgb_ycc_cnv: 158 ; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05) 159 ; xmmF=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A) 160 ; xmmB=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F) 161 162 movdqa xmmG,xmmA 163 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 10 20 01 11 21 02 12) 164 psrldq xmmG,8 ; xmmG=(22 03 13 23 04 14 24 05 -- -- -- -- -- -- -- --) 165 166 punpckhbw xmmA,xmmF ; xmmA=(00 08 10 18 20 28 01 09 11 19 21 29 02 0A 12 1A) 167 pslldq xmmF,8 ; xmmF=(-- -- -- -- -- -- -- -- 15 25 06 16 26 07 17 27) 168 169 punpcklbw xmmG,xmmB ; xmmG=(22 2A 03 0B 13 1B 23 2B 04 0C 14 1C 24 2C 05 0D) 170 punpckhbw xmmF,xmmB ; xmmF=(15 1D 25 2D 06 0E 16 1E 26 2E 07 0F 17 1F 27 2F) 171 172 movdqa xmmD,xmmA 173 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 08 10 18 20 28 01 09) 174 psrldq xmmD,8 ; xmmD=(11 19 21 29 02 0A 12 1A -- -- -- -- -- -- -- --) 175 176 punpckhbw xmmA,xmmG ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 01 05 09 0D) 177 pslldq xmmG,8 ; xmmG=(-- -- -- -- -- -- -- -- 22 2A 03 0B 13 1B 23 2B) 178 179 punpcklbw xmmD,xmmF ; xmmD=(11 15 19 1D 21 25 29 2D 02 06 0A 0E 12 16 1A 1E) 180 punpckhbw xmmG,xmmF ; xmmG=(22 26 2A 2E 03 07 0B 0F 13 17 1B 1F 23 27 2B 2F) 181 182 movdqa xmmE,xmmA 183 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 04 08 0C 10 14 18 1C) 184 psrldq xmmE,8 ; xmmE=(20 24 28 2C 01 05 09 0D -- -- -- -- -- -- -- --) 185 186 punpckhbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E) 187 pslldq xmmD,8 ; xmmD=(-- -- -- -- -- -- -- -- 11 15 19 1D 21 25 29 2D) 188 189 punpcklbw xmmE,xmmG ; xmmE=(20 22 24 26 28 2A 2C 2E 01 03 05 07 09 0B 0D 0F) 190 punpckhbw xmmD,xmmG ; xmmD=(11 13 15 17 19 1B 1D 1F 21 23 25 27 29 2B 2D 2F) 191 192 pxor xmmH,xmmH 193 194 movdqa xmmC,xmmA 195 punpcklbw xmmA,xmmH ; xmmA=(00 02 04 06 08 0A 0C 0E) 196 punpckhbw xmmC,xmmH ; xmmC=(10 12 14 16 18 1A 1C 1E) 197 198 movdqa xmmB,xmmE 199 punpcklbw xmmE,xmmH ; xmmE=(20 22 24 26 28 2A 2C 2E) 200 punpckhbw xmmB,xmmH ; xmmB=(01 03 05 07 09 0B 0D 0F) 201 202 movdqa xmmF,xmmD 203 punpcklbw xmmD,xmmH ; xmmD=(11 13 15 17 19 1B 1D 1F) 204 punpckhbw xmmF,xmmH ; xmmF=(21 23 25 27 29 2B 2D 2F) 205 206 %else ; RGB_PIXELSIZE == 4 ; ----------- 207 208 .column_ld1: 209 test cl, SIZEOF_XMMWORD/16 210 jz short .column_ld2 211 sub ecx, byte SIZEOF_XMMWORD/16 212 movd xmmA, XMM_DWORD [esi+ecx*RGB_PIXELSIZE] 213 .column_ld2: 214 test cl, SIZEOF_XMMWORD/8 215 jz short .column_ld4 216 sub ecx, byte SIZEOF_XMMWORD/8 217 movq xmmE, XMM_MMWORD [esi+ecx*RGB_PIXELSIZE] 218 pslldq xmmA, SIZEOF_MMWORD 219 por xmmA,xmmE 220 .column_ld4: 221 test cl, SIZEOF_XMMWORD/4 222 jz short .column_ld8 223 sub ecx, byte SIZEOF_XMMWORD/4 224 movdqa xmmE,xmmA 225 movdqu xmmA, XMMWORD [esi+ecx*RGB_PIXELSIZE] 226 .column_ld8: 227 test cl, SIZEOF_XMMWORD/2 228 mov ecx, SIZEOF_XMMWORD 229 jz short .rgb_ycc_cnv 230 movdqa xmmF,xmmA 231 movdqa xmmH,xmmE 232 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 233 movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD] 234 jmp short .rgb_ycc_cnv 235 alignx 16,7 236 237 .columnloop: 238 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 239 movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD] 240 movdqu xmmF, XMMWORD [esi+2*SIZEOF_XMMWORD] 241 movdqu xmmH, XMMWORD [esi+3*SIZEOF_XMMWORD] 242 243 .rgb_ycc_cnv: 244 ; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33) 245 ; xmmE=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37) 246 ; xmmF=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B) 247 ; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F) 248 249 movdqa xmmD,xmmA 250 punpcklbw xmmA,xmmE ; xmmA=(00 04 10 14 20 24 30 34 01 05 11 15 21 25 31 35) 251 punpckhbw xmmD,xmmE ; xmmD=(02 06 12 16 22 26 32 36 03 07 13 17 23 27 33 37) 252 253 movdqa xmmC,xmmF 254 punpcklbw xmmF,xmmH ; xmmF=(08 0C 18 1C 28 2C 38 3C 09 0D 19 1D 29 2D 39 3D) 255 punpckhbw xmmC,xmmH ; xmmC=(0A 0E 1A 1E 2A 2E 3A 3E 0B 0F 1B 1F 2B 2F 3B 3F) 256 257 movdqa xmmB,xmmA 258 punpcklwd xmmA,xmmF ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 30 34 38 3C) 259 punpckhwd xmmB,xmmF ; xmmB=(01 05 09 0D 11 15 19 1D 21 25 29 2D 31 35 39 3D) 260 261 movdqa xmmG,xmmD 262 punpcklwd xmmD,xmmC ; xmmD=(02 06 0A 0E 12 16 1A 1E 22 26 2A 2E 32 36 3A 3E) 263 punpckhwd xmmG,xmmC ; xmmG=(03 07 0B 0F 13 17 1B 1F 23 27 2B 2F 33 37 3B 3F) 264 265 movdqa xmmE,xmmA 266 punpcklbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E) 267 punpckhbw xmmE,xmmD ; xmmE=(20 22 24 26 28 2A 2C 2E 30 32 34 36 38 3A 3C 3E) 268 269 movdqa xmmH,xmmB 270 punpcklbw xmmB,xmmG ; xmmB=(01 03 05 07 09 0B 0D 0F 11 13 15 17 19 1B 1D 1F) 271 punpckhbw xmmH,xmmG ; xmmH=(21 23 25 27 29 2B 2D 2F 31 33 35 37 39 3B 3D 3F) 272 273 pxor xmmF,xmmF 274 275 movdqa xmmC,xmmA 276 punpcklbw xmmA,xmmF ; xmmA=(00 02 04 06 08 0A 0C 0E) 277 punpckhbw xmmC,xmmF ; xmmC=(10 12 14 16 18 1A 1C 1E) 278 279 movdqa xmmD,xmmB 280 punpcklbw xmmB,xmmF ; xmmB=(01 03 05 07 09 0B 0D 0F) 281 punpckhbw xmmD,xmmF ; xmmD=(11 13 15 17 19 1B 1D 1F) 282 283 movdqa xmmG,xmmE 284 punpcklbw xmmE,xmmF ; xmmE=(20 22 24 26 28 2A 2C 2E) 285 punpckhbw xmmG,xmmF ; xmmG=(30 32 34 36 38 3A 3C 3E) 286 287 punpcklbw xmmF,xmmH 288 punpckhbw xmmH,xmmH 289 psrlw xmmF,BYTE_BIT ; xmmF=(21 23 25 27 29 2B 2D 2F) 290 psrlw xmmH,BYTE_BIT ; xmmH=(31 33 35 37 39 3B 3D 3F) 291 292 %endif ; RGB_PIXELSIZE ; --------------- 293 294 ; xmm0=R(02468ACE)=RE, xmm2=G(02468ACE)=GE, xmm4=B(02468ACE)=BE 295 ; xmm1=R(13579BDF)=RO, xmm3=G(13579BDF)=GO, xmm5=B(13579BDF)=BO 296 297 ; (Original) 298 ; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B 299 ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE 300 ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE 301 ; 302 ; (This implementation) 303 ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G 304 ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE 305 ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE 306 307 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=RE 308 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=RO 309 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=BE 310 movdqa XMMWORD [wk(3)], xmm5 ; wk(3)=BO 311 312 movdqa xmm6,xmm1 313 punpcklwd xmm1,xmm3 314 punpckhwd xmm6,xmm3 315 movdqa xmm7,xmm1 316 movdqa xmm4,xmm6 317 pmaddwd xmm1,[GOTOFF(eax,PW_F0299_F0337)] ; xmm1=ROL*FIX(0.299)+GOL*FIX(0.337) 318 pmaddwd xmm6,[GOTOFF(eax,PW_F0299_F0337)] ; xmm6=ROH*FIX(0.299)+GOH*FIX(0.337) 319 pmaddwd xmm7,[GOTOFF(eax,PW_MF016_MF033)] ; xmm7=ROL*-FIX(0.168)+GOL*-FIX(0.331) 320 pmaddwd xmm4,[GOTOFF(eax,PW_MF016_MF033)] ; xmm4=ROH*-FIX(0.168)+GOH*-FIX(0.331) 321 322 movdqa XMMWORD [wk(4)], xmm1 ; wk(4)=ROL*FIX(0.299)+GOL*FIX(0.337) 323 movdqa XMMWORD [wk(5)], xmm6 ; wk(5)=ROH*FIX(0.299)+GOH*FIX(0.337) 324 325 pxor xmm1,xmm1 326 pxor xmm6,xmm6 327 punpcklwd xmm1,xmm5 ; xmm1=BOL 328 punpckhwd xmm6,xmm5 ; xmm6=BOH 329 psrld xmm1,1 ; xmm1=BOL*FIX(0.500) 330 psrld xmm6,1 ; xmm6=BOH*FIX(0.500) 331 332 movdqa xmm5,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm5=[PD_ONEHALFM1_CJ] 333 334 paddd xmm7,xmm1 335 paddd xmm4,xmm6 336 paddd xmm7,xmm5 337 paddd xmm4,xmm5 338 psrld xmm7,SCALEBITS ; xmm7=CbOL 339 psrld xmm4,SCALEBITS ; xmm4=CbOH 340 packssdw xmm7,xmm4 ; xmm7=CbO 341 342 movdqa xmm1, XMMWORD [wk(2)] ; xmm1=BE 343 344 movdqa xmm6,xmm0 345 punpcklwd xmm0,xmm2 346 punpckhwd xmm6,xmm2 347 movdqa xmm5,xmm0 348 movdqa xmm4,xmm6 349 pmaddwd xmm0,[GOTOFF(eax,PW_F0299_F0337)] ; xmm0=REL*FIX(0.299)+GEL*FIX(0.337) 350 pmaddwd xmm6,[GOTOFF(eax,PW_F0299_F0337)] ; xmm6=REH*FIX(0.299)+GEH*FIX(0.337) 351 pmaddwd xmm5,[GOTOFF(eax,PW_MF016_MF033)] ; xmm5=REL*-FIX(0.168)+GEL*-FIX(0.331) 352 pmaddwd xmm4,[GOTOFF(eax,PW_MF016_MF033)] ; xmm4=REH*-FIX(0.168)+GEH*-FIX(0.331) 353 354 movdqa XMMWORD [wk(6)], xmm0 ; wk(6)=REL*FIX(0.299)+GEL*FIX(0.337) 355 movdqa XMMWORD [wk(7)], xmm6 ; wk(7)=REH*FIX(0.299)+GEH*FIX(0.337) 356 357 pxor xmm0,xmm0 358 pxor xmm6,xmm6 359 punpcklwd xmm0,xmm1 ; xmm0=BEL 360 punpckhwd xmm6,xmm1 ; xmm6=BEH 361 psrld xmm0,1 ; xmm0=BEL*FIX(0.500) 362 psrld xmm6,1 ; xmm6=BEH*FIX(0.500) 363 364 movdqa xmm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm1=[PD_ONEHALFM1_CJ] 365 366 paddd xmm5,xmm0 367 paddd xmm4,xmm6 368 paddd xmm5,xmm1 369 paddd xmm4,xmm1 370 psrld xmm5,SCALEBITS ; xmm5=CbEL 371 psrld xmm4,SCALEBITS ; xmm4=CbEH 372 packssdw xmm5,xmm4 ; xmm5=CbE 373 374 psllw xmm7,BYTE_BIT 375 por xmm5,xmm7 ; xmm5=Cb 376 movdqa XMMWORD [ebx], xmm5 ; Save Cb 377 378 movdqa xmm0, XMMWORD [wk(3)] ; xmm0=BO 379 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=BE 380 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=RO 381 382 movdqa xmm4,xmm0 383 punpcklwd xmm0,xmm3 384 punpckhwd xmm4,xmm3 385 movdqa xmm7,xmm0 386 movdqa xmm5,xmm4 387 pmaddwd xmm0,[GOTOFF(eax,PW_F0114_F0250)] ; xmm0=BOL*FIX(0.114)+GOL*FIX(0.250) 388 pmaddwd xmm4,[GOTOFF(eax,PW_F0114_F0250)] ; xmm4=BOH*FIX(0.114)+GOH*FIX(0.250) 389 pmaddwd xmm7,[GOTOFF(eax,PW_MF008_MF041)] ; xmm7=BOL*-FIX(0.081)+GOL*-FIX(0.418) 390 pmaddwd xmm5,[GOTOFF(eax,PW_MF008_MF041)] ; xmm5=BOH*-FIX(0.081)+GOH*-FIX(0.418) 391 392 movdqa xmm3,[GOTOFF(eax,PD_ONEHALF)] ; xmm3=[PD_ONEHALF] 393 394 paddd xmm0, XMMWORD [wk(4)] 395 paddd xmm4, XMMWORD [wk(5)] 396 paddd xmm0,xmm3 397 paddd xmm4,xmm3 398 psrld xmm0,SCALEBITS ; xmm0=YOL 399 psrld xmm4,SCALEBITS ; xmm4=YOH 400 packssdw xmm0,xmm4 ; xmm0=YO 401 402 pxor xmm3,xmm3 403 pxor xmm4,xmm4 404 punpcklwd xmm3,xmm1 ; xmm3=ROL 405 punpckhwd xmm4,xmm1 ; xmm4=ROH 406 psrld xmm3,1 ; xmm3=ROL*FIX(0.500) 407 psrld xmm4,1 ; xmm4=ROH*FIX(0.500) 408 409 movdqa xmm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm1=[PD_ONEHALFM1_CJ] 410 411 paddd xmm7,xmm3 412 paddd xmm5,xmm4 413 paddd xmm7,xmm1 414 paddd xmm5,xmm1 415 psrld xmm7,SCALEBITS ; xmm7=CrOL 416 psrld xmm5,SCALEBITS ; xmm5=CrOH 417 packssdw xmm7,xmm5 ; xmm7=CrO 418 419 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=RE 420 421 movdqa xmm4,xmm6 422 punpcklwd xmm6,xmm2 423 punpckhwd xmm4,xmm2 424 movdqa xmm1,xmm6 425 movdqa xmm5,xmm4 426 pmaddwd xmm6,[GOTOFF(eax,PW_F0114_F0250)] ; xmm6=BEL*FIX(0.114)+GEL*FIX(0.250) 427 pmaddwd xmm4,[GOTOFF(eax,PW_F0114_F0250)] ; xmm4=BEH*FIX(0.114)+GEH*FIX(0.250) 428 pmaddwd xmm1,[GOTOFF(eax,PW_MF008_MF041)] ; xmm1=BEL*-FIX(0.081)+GEL*-FIX(0.418) 429 pmaddwd xmm5,[GOTOFF(eax,PW_MF008_MF041)] ; xmm5=BEH*-FIX(0.081)+GEH*-FIX(0.418) 430 431 movdqa xmm2,[GOTOFF(eax,PD_ONEHALF)] ; xmm2=[PD_ONEHALF] 432 433 paddd xmm6, XMMWORD [wk(6)] 434 paddd xmm4, XMMWORD [wk(7)] 435 paddd xmm6,xmm2 436 paddd xmm4,xmm2 437 psrld xmm6,SCALEBITS ; xmm6=YEL 438 psrld xmm4,SCALEBITS ; xmm4=YEH 439 packssdw xmm6,xmm4 ; xmm6=YE 440 441 psllw xmm0,BYTE_BIT 442 por xmm6,xmm0 ; xmm6=Y 443 movdqa XMMWORD [edi], xmm6 ; Save Y 444 445 pxor xmm2,xmm2 446 pxor xmm4,xmm4 447 punpcklwd xmm2,xmm3 ; xmm2=REL 448 punpckhwd xmm4,xmm3 ; xmm4=REH 449 psrld xmm2,1 ; xmm2=REL*FIX(0.500) 450 psrld xmm4,1 ; xmm4=REH*FIX(0.500) 451 452 movdqa xmm0,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm0=[PD_ONEHALFM1_CJ] 453 454 paddd xmm1,xmm2 455 paddd xmm5,xmm4 456 paddd xmm1,xmm0 457 paddd xmm5,xmm0 458 psrld xmm1,SCALEBITS ; xmm1=CrEL 459 psrld xmm5,SCALEBITS ; xmm5=CrEH 460 packssdw xmm1,xmm5 ; xmm1=CrE 461 462 psllw xmm7,BYTE_BIT 463 por xmm1,xmm7 ; xmm1=Cr 464 movdqa XMMWORD [edx], xmm1 ; Save Cr 465 466 sub ecx, byte SIZEOF_XMMWORD 467 add esi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD ; inptr 468 add edi, byte SIZEOF_XMMWORD ; outptr0 469 add ebx, byte SIZEOF_XMMWORD ; outptr1 470 add edx, byte SIZEOF_XMMWORD ; outptr2 471 cmp ecx, byte SIZEOF_XMMWORD 472 jae near .columnloop 473 test ecx,ecx 474 jnz near .column_ld1 475 476 pop ecx ; col 477 pop esi 478 pop edi 479 pop ebx 480 pop edx 481 poppic eax 482 483 add esi, byte SIZEOF_JSAMPROW ; input_buf 484 add edi, byte SIZEOF_JSAMPROW 485 add ebx, byte SIZEOF_JSAMPROW 486 add edx, byte SIZEOF_JSAMPROW 487 dec eax ; num_rows 488 jg near .rowloop 489 490 .return: 491 pop edi 492 pop esi 493 ; pop edx ; need not be preserved 494 ; pop ecx ; need not be preserved 495 pop ebx 496 mov esp,ebp ; esp <- aligned ebp 497 pop esp ; esp <- original ebp 498 pop ebp 499 ret 500 501 ; For some reason, the OS X linker does not honor the request to align the 502 ; segment unless we do this. 503 align 16 504
