1 ; 2 ; jcgryext.asm - grayscale colorspace conversion (SSE2) 3 ; 4 ; x86 SIMD extension for IJG JPEG library 5 ; Copyright (C) 1999-2006, MIYASAKA Masaru. 6 ; Copyright (C) 2011, D. R. Commander. 7 ; For conditions of distribution and use, see copyright notice in jsimdext.inc 8 ; 9 ; This file should be assembled with NASM (Netwide Assembler), 10 ; can *not* be assembled with Microsoft's MASM or any compatible 11 ; assembler (including Borland's Turbo Assembler). 12 ; NASM is available from http://nasm.sourceforge.net/ or 13 ; http://sourceforge.net/project/showfiles.php?group_id=6208 14 ; 15 ; [TAB8] 16 17 %include "jcolsamp.inc" 18 19 ; -------------------------------------------------------------------------- 20 ; 21 ; Convert some rows of samples to the output colorspace. 22 ; 23 ; GLOBAL(void) 24 ; jsimd_rgb_gray_convert_sse2 (JDIMENSION img_width, 25 ; JSAMPARRAY input_buf, JSAMPIMAGE output_buf, 26 ; JDIMENSION output_row, int num_rows); 27 ; 28 29 %define img_width(b) (b)+8 ; JDIMENSION img_width 30 %define input_buf(b) (b)+12 ; JSAMPARRAY input_buf 31 %define output_buf(b) (b)+16 ; JSAMPIMAGE output_buf 32 %define output_row(b) (b)+20 ; JDIMENSION output_row 33 %define num_rows(b) (b)+24 ; int num_rows 34 35 %define original_ebp ebp+0 36 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] 37 %define WK_NUM 2 38 %define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr 39 40 align 16 41 42 global EXTN(jsimd_rgb_gray_convert_sse2) 43 44 EXTN(jsimd_rgb_gray_convert_sse2): 45 push ebp 46 mov eax,esp ; eax = original ebp 47 sub esp, byte 4 48 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 49 mov [esp],eax 50 mov ebp,esp ; ebp = aligned ebp 51 lea esp, [wk(0)] 52 pushpic eax ; make a room for GOT address 53 push ebx 54 ; push ecx ; need not be preserved 55 ; push edx ; need not be preserved 56 push esi 57 push edi 58 59 get_GOT ebx ; get GOT address 60 movpic POINTER [gotptr], ebx ; save GOT address 61 62 mov ecx, JDIMENSION [img_width(eax)] 63 test ecx,ecx 64 jz near .return 65 66 push ecx 67 68 mov esi, JSAMPIMAGE [output_buf(eax)] 69 mov ecx, JDIMENSION [output_row(eax)] 70 mov edi, JSAMPARRAY [esi+0*SIZEOF_JSAMPARRAY] 71 lea edi, [edi+ecx*SIZEOF_JSAMPROW] 72 73 pop ecx 74 75 mov esi, JSAMPARRAY [input_buf(eax)] 76 mov eax, INT [num_rows(eax)] 77 test eax,eax 78 jle near .return 79 alignx 16,7 80 .rowloop: 81 pushpic eax 82 push edi 83 push esi 84 push ecx ; col 85 86 mov esi, JSAMPROW [esi] ; inptr 87 mov edi, JSAMPROW [edi] ; outptr0 88 movpic eax, POINTER [gotptr] ; load GOT address (eax) 89 90 cmp ecx, byte SIZEOF_XMMWORD 91 jae near .columnloop 92 alignx 16,7 93 94 %if RGB_PIXELSIZE == 3 ; --------------- 95 96 .column_ld1: 97 push eax 98 push edx 99 lea ecx,[ecx+ecx*2] ; imul ecx,RGB_PIXELSIZE 100 test cl, SIZEOF_BYTE 101 jz short .column_ld2 102 sub ecx, byte SIZEOF_BYTE 103 movzx eax, BYTE [esi+ecx] 104 .column_ld2: 105 test cl, SIZEOF_WORD 106 jz short .column_ld4 107 sub ecx, byte SIZEOF_WORD 108 movzx edx, WORD [esi+ecx] 109 shl eax, WORD_BIT 110 or eax,edx 111 .column_ld4: 112 movd xmmA,eax 113 pop edx 114 pop eax 115 test cl, SIZEOF_DWORD 116 jz short .column_ld8 117 sub ecx, byte SIZEOF_DWORD 118 movd xmmF, XMM_DWORD [esi+ecx] 119 pslldq xmmA, SIZEOF_DWORD 120 por xmmA,xmmF 121 .column_ld8: 122 test cl, SIZEOF_MMWORD 123 jz short .column_ld16 124 sub ecx, byte SIZEOF_MMWORD 125 movq xmmB, XMM_MMWORD [esi+ecx] 126 pslldq xmmA, SIZEOF_MMWORD 127 por xmmA,xmmB 128 .column_ld16: 129 test cl, SIZEOF_XMMWORD 130 jz short .column_ld32 131 movdqa xmmF,xmmA 132 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 133 mov ecx, SIZEOF_XMMWORD 134 jmp short .rgb_gray_cnv 135 .column_ld32: 136 test cl, 2*SIZEOF_XMMWORD 137 mov ecx, SIZEOF_XMMWORD 138 jz short .rgb_gray_cnv 139 movdqa xmmB,xmmA 140 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 141 movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD] 142 jmp short .rgb_gray_cnv 143 alignx 16,7 144 145 .columnloop: 146 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 147 movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD] 148 movdqu xmmB, XMMWORD [esi+2*SIZEOF_XMMWORD] 149 150 .rgb_gray_cnv: 151 ; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05) 152 ; xmmF=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A) 153 ; xmmB=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F) 154 155 movdqa xmmG,xmmA 156 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 10 20 01 11 21 02 12) 157 psrldq xmmG,8 ; xmmG=(22 03 13 23 04 14 24 05 -- -- -- -- -- -- -- --) 158 159 punpckhbw xmmA,xmmF ; xmmA=(00 08 10 18 20 28 01 09 11 19 21 29 02 0A 12 1A) 160 pslldq xmmF,8 ; xmmF=(-- -- -- -- -- -- -- -- 15 25 06 16 26 07 17 27) 161 162 punpcklbw xmmG,xmmB ; xmmG=(22 2A 03 0B 13 1B 23 2B 04 0C 14 1C 24 2C 05 0D) 163 punpckhbw xmmF,xmmB ; xmmF=(15 1D 25 2D 06 0E 16 1E 26 2E 07 0F 17 1F 27 2F) 164 165 movdqa xmmD,xmmA 166 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 08 10 18 20 28 01 09) 167 psrldq xmmD,8 ; xmmD=(11 19 21 29 02 0A 12 1A -- -- -- -- -- -- -- --) 168 169 punpckhbw xmmA,xmmG ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 01 05 09 0D) 170 pslldq xmmG,8 ; xmmG=(-- -- -- -- -- -- -- -- 22 2A 03 0B 13 1B 23 2B) 171 172 punpcklbw xmmD,xmmF ; xmmD=(11 15 19 1D 21 25 29 2D 02 06 0A 0E 12 16 1A 1E) 173 punpckhbw xmmG,xmmF ; xmmG=(22 26 2A 2E 03 07 0B 0F 13 17 1B 1F 23 27 2B 2F) 174 175 movdqa xmmE,xmmA 176 pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 04 08 0C 10 14 18 1C) 177 psrldq xmmE,8 ; xmmE=(20 24 28 2C 01 05 09 0D -- -- -- -- -- -- -- --) 178 179 punpckhbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E) 180 pslldq xmmD,8 ; xmmD=(-- -- -- -- -- -- -- -- 11 15 19 1D 21 25 29 2D) 181 182 punpcklbw xmmE,xmmG ; xmmE=(20 22 24 26 28 2A 2C 2E 01 03 05 07 09 0B 0D 0F) 183 punpckhbw xmmD,xmmG ; xmmD=(11 13 15 17 19 1B 1D 1F 21 23 25 27 29 2B 2D 2F) 184 185 pxor xmmH,xmmH 186 187 movdqa xmmC,xmmA 188 punpcklbw xmmA,xmmH ; xmmA=(00 02 04 06 08 0A 0C 0E) 189 punpckhbw xmmC,xmmH ; xmmC=(10 12 14 16 18 1A 1C 1E) 190 191 movdqa xmmB,xmmE 192 punpcklbw xmmE,xmmH ; xmmE=(20 22 24 26 28 2A 2C 2E) 193 punpckhbw xmmB,xmmH ; xmmB=(01 03 05 07 09 0B 0D 0F) 194 195 movdqa xmmF,xmmD 196 punpcklbw xmmD,xmmH ; xmmD=(11 13 15 17 19 1B 1D 1F) 197 punpckhbw xmmF,xmmH ; xmmF=(21 23 25 27 29 2B 2D 2F) 198 199 %else ; RGB_PIXELSIZE == 4 ; ----------- 200 201 .column_ld1: 202 test cl, SIZEOF_XMMWORD/16 203 jz short .column_ld2 204 sub ecx, byte SIZEOF_XMMWORD/16 205 movd xmmA, XMM_DWORD [esi+ecx*RGB_PIXELSIZE] 206 .column_ld2: 207 test cl, SIZEOF_XMMWORD/8 208 jz short .column_ld4 209 sub ecx, byte SIZEOF_XMMWORD/8 210 movq xmmE, XMM_MMWORD [esi+ecx*RGB_PIXELSIZE] 211 pslldq xmmA, SIZEOF_MMWORD 212 por xmmA,xmmE 213 .column_ld4: 214 test cl, SIZEOF_XMMWORD/4 215 jz short .column_ld8 216 sub ecx, byte SIZEOF_XMMWORD/4 217 movdqa xmmE,xmmA 218 movdqu xmmA, XMMWORD [esi+ecx*RGB_PIXELSIZE] 219 .column_ld8: 220 test cl, SIZEOF_XMMWORD/2 221 mov ecx, SIZEOF_XMMWORD 222 jz short .rgb_gray_cnv 223 movdqa xmmF,xmmA 224 movdqa xmmH,xmmE 225 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 226 movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD] 227 jmp short .rgb_gray_cnv 228 alignx 16,7 229 230 .columnloop: 231 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 232 movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD] 233 movdqu xmmF, XMMWORD [esi+2*SIZEOF_XMMWORD] 234 movdqu xmmH, XMMWORD [esi+3*SIZEOF_XMMWORD] 235 236 .rgb_gray_cnv: 237 ; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33) 238 ; xmmE=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37) 239 ; xmmF=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B) 240 ; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F) 241 242 movdqa xmmD,xmmA 243 punpcklbw xmmA,xmmE ; xmmA=(00 04 10 14 20 24 30 34 01 05 11 15 21 25 31 35) 244 punpckhbw xmmD,xmmE ; xmmD=(02 06 12 16 22 26 32 36 03 07 13 17 23 27 33 37) 245 246 movdqa xmmC,xmmF 247 punpcklbw xmmF,xmmH ; xmmF=(08 0C 18 1C 28 2C 38 3C 09 0D 19 1D 29 2D 39 3D) 248 punpckhbw xmmC,xmmH ; xmmC=(0A 0E 1A 1E 2A 2E 3A 3E 0B 0F 1B 1F 2B 2F 3B 3F) 249 250 movdqa xmmB,xmmA 251 punpcklwd xmmA,xmmF ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 30 34 38 3C) 252 punpckhwd xmmB,xmmF ; xmmB=(01 05 09 0D 11 15 19 1D 21 25 29 2D 31 35 39 3D) 253 254 movdqa xmmG,xmmD 255 punpcklwd xmmD,xmmC ; xmmD=(02 06 0A 0E 12 16 1A 1E 22 26 2A 2E 32 36 3A 3E) 256 punpckhwd xmmG,xmmC ; xmmG=(03 07 0B 0F 13 17 1B 1F 23 27 2B 2F 33 37 3B 3F) 257 258 movdqa xmmE,xmmA 259 punpcklbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E) 260 punpckhbw xmmE,xmmD ; xmmE=(20 22 24 26 28 2A 2C 2E 30 32 34 36 38 3A 3C 3E) 261 262 movdqa xmmH,xmmB 263 punpcklbw xmmB,xmmG ; xmmB=(01 03 05 07 09 0B 0D 0F 11 13 15 17 19 1B 1D 1F) 264 punpckhbw xmmH,xmmG ; xmmH=(21 23 25 27 29 2B 2D 2F 31 33 35 37 39 3B 3D 3F) 265 266 pxor xmmF,xmmF 267 268 movdqa xmmC,xmmA 269 punpcklbw xmmA,xmmF ; xmmA=(00 02 04 06 08 0A 0C 0E) 270 punpckhbw xmmC,xmmF ; xmmC=(10 12 14 16 18 1A 1C 1E) 271 272 movdqa xmmD,xmmB 273 punpcklbw xmmB,xmmF ; xmmB=(01 03 05 07 09 0B 0D 0F) 274 punpckhbw xmmD,xmmF ; xmmD=(11 13 15 17 19 1B 1D 1F) 275 276 movdqa xmmG,xmmE 277 punpcklbw xmmE,xmmF ; xmmE=(20 22 24 26 28 2A 2C 2E) 278 punpckhbw xmmG,xmmF ; xmmG=(30 32 34 36 38 3A 3C 3E) 279 280 punpcklbw xmmF,xmmH 281 punpckhbw xmmH,xmmH 282 psrlw xmmF,BYTE_BIT ; xmmF=(21 23 25 27 29 2B 2D 2F) 283 psrlw xmmH,BYTE_BIT ; xmmH=(31 33 35 37 39 3B 3D 3F) 284 285 %endif ; RGB_PIXELSIZE ; --------------- 286 287 ; xmm0=R(02468ACE)=RE, xmm2=G(02468ACE)=GE, xmm4=B(02468ACE)=BE 288 ; xmm1=R(13579BDF)=RO, xmm3=G(13579BDF)=GO, xmm5=B(13579BDF)=BO 289 290 ; (Original) 291 ; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B 292 ; 293 ; (This implementation) 294 ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G 295 296 movdqa xmm6,xmm1 297 punpcklwd xmm1,xmm3 298 punpckhwd xmm6,xmm3 299 pmaddwd xmm1,[GOTOFF(eax,PW_F0299_F0337)] ; xmm1=ROL*FIX(0.299)+GOL*FIX(0.337) 300 pmaddwd xmm6,[GOTOFF(eax,PW_F0299_F0337)] ; xmm6=ROH*FIX(0.299)+GOH*FIX(0.337) 301 302 movdqa xmm7, xmm6 ; xmm7=ROH*FIX(0.299)+GOH*FIX(0.337) 303 304 movdqa xmm6,xmm0 305 punpcklwd xmm0,xmm2 306 punpckhwd xmm6,xmm2 307 pmaddwd xmm0,[GOTOFF(eax,PW_F0299_F0337)] ; xmm0=REL*FIX(0.299)+GEL*FIX(0.337) 308 pmaddwd xmm6,[GOTOFF(eax,PW_F0299_F0337)] ; xmm6=REH*FIX(0.299)+GEH*FIX(0.337) 309 310 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=REL*FIX(0.299)+GEL*FIX(0.337) 311 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=REH*FIX(0.299)+GEH*FIX(0.337) 312 313 movdqa xmm0, xmm5 ; xmm0=BO 314 movdqa xmm6, xmm4 ; xmm6=BE 315 316 movdqa xmm4,xmm0 317 punpcklwd xmm0,xmm3 318 punpckhwd xmm4,xmm3 319 pmaddwd xmm0,[GOTOFF(eax,PW_F0114_F0250)] ; xmm0=BOL*FIX(0.114)+GOL*FIX(0.250) 320 pmaddwd xmm4,[GOTOFF(eax,PW_F0114_F0250)] ; xmm4=BOH*FIX(0.114)+GOH*FIX(0.250) 321 322 movdqa xmm3,[GOTOFF(eax,PD_ONEHALF)] ; xmm3=[PD_ONEHALF] 323 324 paddd xmm0, xmm1 325 paddd xmm4, xmm7 326 paddd xmm0,xmm3 327 paddd xmm4,xmm3 328 psrld xmm0,SCALEBITS ; xmm0=YOL 329 psrld xmm4,SCALEBITS ; xmm4=YOH 330 packssdw xmm0,xmm4 ; xmm0=YO 331 332 movdqa xmm4,xmm6 333 punpcklwd xmm6,xmm2 334 punpckhwd xmm4,xmm2 335 pmaddwd xmm6,[GOTOFF(eax,PW_F0114_F0250)] ; xmm6=BEL*FIX(0.114)+GEL*FIX(0.250) 336 pmaddwd xmm4,[GOTOFF(eax,PW_F0114_F0250)] ; xmm4=BEH*FIX(0.114)+GEH*FIX(0.250) 337 338 movdqa xmm2,[GOTOFF(eax,PD_ONEHALF)] ; xmm2=[PD_ONEHALF] 339 340 paddd xmm6, XMMWORD [wk(0)] 341 paddd xmm4, XMMWORD [wk(1)] 342 paddd xmm6,xmm2 343 paddd xmm4,xmm2 344 psrld xmm6,SCALEBITS ; xmm6=YEL 345 psrld xmm4,SCALEBITS ; xmm4=YEH 346 packssdw xmm6,xmm4 ; xmm6=YE 347 348 psllw xmm0,BYTE_BIT 349 por xmm6,xmm0 ; xmm6=Y 350 movdqa XMMWORD [edi], xmm6 ; Save Y 351 352 sub ecx, byte SIZEOF_XMMWORD 353 add esi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD ; inptr 354 add edi, byte SIZEOF_XMMWORD ; outptr0 355 cmp ecx, byte SIZEOF_XMMWORD 356 jae near .columnloop 357 test ecx,ecx 358 jnz near .column_ld1 359 360 pop ecx ; col 361 pop esi 362 pop edi 363 poppic eax 364 365 add esi, byte SIZEOF_JSAMPROW ; input_buf 366 add edi, byte SIZEOF_JSAMPROW 367 dec eax ; num_rows 368 jg near .rowloop 369 370 .return: 371 pop edi 372 pop esi 373 ; pop edx ; need not be preserved 374 ; pop ecx ; need not be preserved 375 pop ebx 376 mov esp,ebp ; esp <- aligned ebp 377 pop esp ; esp <- original ebp 378 pop ebp 379 ret 380 381 ; For some reason, the OS X linker does not honor the request to align the 382 ; segment unless we do this. 383 align 16 384
