1; 2; jcgryext.asm - grayscale colorspace conversion (SSE2) 3; 4; Copyright (C) 2011, 2016, D. R. Commander. 5; 6; Based on the x86 SIMD extension for IJG JPEG library 7; Copyright (C) 1999-2006, MIYASAKA Masaru. 8; For conditions of distribution and use, see copyright notice in jsimdext.inc 9; 10; This file should be assembled with NASM (Netwide Assembler), 11; can *not* be assembled with Microsoft's MASM or any compatible 12; assembler (including Borland's Turbo Assembler). 13; NASM is available from http://nasm.sourceforge.net/ or 14; http://sourceforge.net/project/showfiles.php?group_id=6208 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_gray_convert_sse2(JDIMENSION img_width, JSAMPARRAY input_buf, 24; JSAMPIMAGE output_buf, JDIMENSION output_row, 25; 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 36 ; xmmword wk[WK_NUM] 37%define WK_NUM 2 38%define gotptr wk(0) - SIZEOF_POINTER ; void * gotptr 39 40 align 32 41 GLOBAL_FUNCTION(jsimd_rgb_gray_convert_sse2) 42 43EXTN(jsimd_rgb_gray_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 lea edi, [edi+ecx*SIZEOF_JSAMPROW] 71 72 pop ecx 73 74 mov esi, JSAMPARRAY [input_buf(eax)] 75 mov eax, INT [num_rows(eax)] 76 test eax, eax 77 jle near .return 78 alignx 16, 7 79.rowloop: 80 pushpic eax 81 push edi 82 push esi 83 push ecx ; col 84 85 mov esi, JSAMPROW [esi] ; inptr 86 mov edi, JSAMPROW [edi] ; outptr0 87 movpic eax, POINTER [gotptr] ; load GOT address (eax) 88 89 cmp ecx, byte SIZEOF_XMMWORD 90 jae near .columnloop 91 alignx 16, 7 92 93%if RGB_PIXELSIZE == 3 ; --------------- 94 95.column_ld1: 96 push eax 97 push edx 98 lea ecx, [ecx+ecx*2] ; imul ecx,RGB_PIXELSIZE 99 test cl, SIZEOF_BYTE 100 jz short .column_ld2 101 sub ecx, byte SIZEOF_BYTE 102 movzx eax, byte [esi+ecx] 103.column_ld2: 104 test cl, SIZEOF_WORD 105 jz short .column_ld4 106 sub ecx, byte SIZEOF_WORD 107 movzx edx, word [esi+ecx] 108 shl eax, WORD_BIT 109 or eax, edx 110.column_ld4: 111 movd xmmA, eax 112 pop edx 113 pop eax 114 test cl, SIZEOF_DWORD 115 jz short .column_ld8 116 sub ecx, byte SIZEOF_DWORD 117 movd xmmF, XMM_DWORD [esi+ecx] 118 pslldq xmmA, SIZEOF_DWORD 119 por xmmA, xmmF 120.column_ld8: 121 test cl, SIZEOF_MMWORD 122 jz short .column_ld16 123 sub ecx, byte SIZEOF_MMWORD 124 movq xmmB, XMM_MMWORD [esi+ecx] 125 pslldq xmmA, SIZEOF_MMWORD 126 por xmmA, xmmB 127.column_ld16: 128 test cl, SIZEOF_XMMWORD 129 jz short .column_ld32 130 movdqa xmmF, xmmA 131 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 132 mov ecx, SIZEOF_XMMWORD 133 jmp short .rgb_gray_cnv 134.column_ld32: 135 test cl, 2*SIZEOF_XMMWORD 136 mov ecx, SIZEOF_XMMWORD 137 jz short .rgb_gray_cnv 138 movdqa xmmB, xmmA 139 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 140 movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD] 141 jmp short .rgb_gray_cnv 142 alignx 16, 7 143 144.columnloop: 145 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 146 movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD] 147 movdqu xmmB, XMMWORD [esi+2*SIZEOF_XMMWORD] 148 149.rgb_gray_cnv: 150 ; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05) 151 ; xmmF=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A) 152 ; xmmB=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F) 153 154 movdqa xmmG, xmmA 155 pslldq xmmA, 8 ; xmmA=(-- -- -- -- -- -- -- -- 00 10 20 01 11 21 02 12) 156 psrldq xmmG, 8 ; xmmG=(22 03 13 23 04 14 24 05 -- -- -- -- -- -- -- --) 157 158 punpckhbw xmmA, xmmF ; xmmA=(00 08 10 18 20 28 01 09 11 19 21 29 02 0A 12 1A) 159 pslldq xmmF, 8 ; xmmF=(-- -- -- -- -- -- -- -- 15 25 06 16 26 07 17 27) 160 161 punpcklbw xmmG, xmmB ; xmmG=(22 2A 03 0B 13 1B 23 2B 04 0C 14 1C 24 2C 05 0D) 162 punpckhbw xmmF, xmmB ; xmmF=(15 1D 25 2D 06 0E 16 1E 26 2E 07 0F 17 1F 27 2F) 163 164 movdqa xmmD, xmmA 165 pslldq xmmA, 8 ; xmmA=(-- -- -- -- -- -- -- -- 00 08 10 18 20 28 01 09) 166 psrldq xmmD, 8 ; xmmD=(11 19 21 29 02 0A 12 1A -- -- -- -- -- -- -- --) 167 168 punpckhbw xmmA, xmmG ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 01 05 09 0D) 169 pslldq xmmG, 8 ; xmmG=(-- -- -- -- -- -- -- -- 22 2A 03 0B 13 1B 23 2B) 170 171 punpcklbw xmmD, xmmF ; xmmD=(11 15 19 1D 21 25 29 2D 02 06 0A 0E 12 16 1A 1E) 172 punpckhbw xmmG, xmmF ; xmmG=(22 26 2A 2E 03 07 0B 0F 13 17 1B 1F 23 27 2B 2F) 173 174 movdqa xmmE, xmmA 175 pslldq xmmA, 8 ; xmmA=(-- -- -- -- -- -- -- -- 00 04 08 0C 10 14 18 1C) 176 psrldq xmmE, 8 ; xmmE=(20 24 28 2C 01 05 09 0D -- -- -- -- -- -- -- --) 177 178 punpckhbw xmmA, xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E) 179 pslldq xmmD, 8 ; xmmD=(-- -- -- -- -- -- -- -- 11 15 19 1D 21 25 29 2D) 180 181 punpcklbw xmmE, xmmG ; xmmE=(20 22 24 26 28 2A 2C 2E 01 03 05 07 09 0B 0D 0F) 182 punpckhbw xmmD, xmmG ; xmmD=(11 13 15 17 19 1B 1D 1F 21 23 25 27 29 2B 2D 2F) 183 184 pxor xmmH, xmmH 185 186 movdqa xmmC, xmmA 187 punpcklbw xmmA, xmmH ; xmmA=(00 02 04 06 08 0A 0C 0E) 188 punpckhbw xmmC, xmmH ; xmmC=(10 12 14 16 18 1A 1C 1E) 189 190 movdqa xmmB, xmmE 191 punpcklbw xmmE, xmmH ; xmmE=(20 22 24 26 28 2A 2C 2E) 192 punpckhbw xmmB, xmmH ; xmmB=(01 03 05 07 09 0B 0D 0F) 193 194 movdqa xmmF, xmmD 195 punpcklbw xmmD, xmmH ; xmmD=(11 13 15 17 19 1B 1D 1F) 196 punpckhbw xmmF, xmmH ; xmmF=(21 23 25 27 29 2B 2D 2F) 197 198%else ; RGB_PIXELSIZE == 4 ; ----------- 199 200.column_ld1: 201 test cl, SIZEOF_XMMWORD/16 202 jz short .column_ld2 203 sub ecx, byte SIZEOF_XMMWORD/16 204 movd xmmA, XMM_DWORD [esi+ecx*RGB_PIXELSIZE] 205.column_ld2: 206 test cl, SIZEOF_XMMWORD/8 207 jz short .column_ld4 208 sub ecx, byte SIZEOF_XMMWORD/8 209 movq xmmE, XMM_MMWORD [esi+ecx*RGB_PIXELSIZE] 210 pslldq xmmA, SIZEOF_MMWORD 211 por xmmA, xmmE 212.column_ld4: 213 test cl, SIZEOF_XMMWORD/4 214 jz short .column_ld8 215 sub ecx, byte SIZEOF_XMMWORD/4 216 movdqa xmmE, xmmA 217 movdqu xmmA, XMMWORD [esi+ecx*RGB_PIXELSIZE] 218.column_ld8: 219 test cl, SIZEOF_XMMWORD/2 220 mov ecx, SIZEOF_XMMWORD 221 jz short .rgb_gray_cnv 222 movdqa xmmF, xmmA 223 movdqa xmmH, xmmE 224 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 225 movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD] 226 jmp short .rgb_gray_cnv 227 alignx 16, 7 228 229.columnloop: 230 movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD] 231 movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD] 232 movdqu xmmF, XMMWORD [esi+2*SIZEOF_XMMWORD] 233 movdqu xmmH, XMMWORD [esi+3*SIZEOF_XMMWORD] 234 235.rgb_gray_cnv: 236 ; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33) 237 ; xmmE=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37) 238 ; xmmF=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B) 239 ; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F) 240 241 movdqa xmmD, xmmA 242 punpcklbw xmmA, xmmE ; xmmA=(00 04 10 14 20 24 30 34 01 05 11 15 21 25 31 35) 243 punpckhbw xmmD, xmmE ; xmmD=(02 06 12 16 22 26 32 36 03 07 13 17 23 27 33 37) 244 245 movdqa xmmC, xmmF 246 punpcklbw xmmF, xmmH ; xmmF=(08 0C 18 1C 28 2C 38 3C 09 0D 19 1D 29 2D 39 3D) 247 punpckhbw xmmC, xmmH ; xmmC=(0A 0E 1A 1E 2A 2E 3A 3E 0B 0F 1B 1F 2B 2F 3B 3F) 248 249 movdqa xmmB, xmmA 250 punpcklwd xmmA, xmmF ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 30 34 38 3C) 251 punpckhwd xmmB, xmmF ; xmmB=(01 05 09 0D 11 15 19 1D 21 25 29 2D 31 35 39 3D) 252 253 movdqa xmmG, xmmD 254 punpcklwd xmmD, xmmC ; xmmD=(02 06 0A 0E 12 16 1A 1E 22 26 2A 2E 32 36 3A 3E) 255 punpckhwd xmmG, xmmC ; xmmG=(03 07 0B 0F 13 17 1B 1F 23 27 2B 2F 33 37 3B 3F) 256 257 movdqa xmmE, xmmA 258 punpcklbw xmmA, xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E) 259 punpckhbw xmmE, xmmD ; xmmE=(20 22 24 26 28 2A 2C 2E 30 32 34 36 38 3A 3C 3E) 260 261 movdqa xmmH, xmmB 262 punpcklbw xmmB, xmmG ; xmmB=(01 03 05 07 09 0B 0D 0F 11 13 15 17 19 1B 1D 1F) 263 punpckhbw xmmH, xmmG ; xmmH=(21 23 25 27 29 2B 2D 2F 31 33 35 37 39 3B 3D 3F) 264 265 pxor xmmF, xmmF 266 267 movdqa xmmC, xmmA 268 punpcklbw xmmA, xmmF ; xmmA=(00 02 04 06 08 0A 0C 0E) 269 punpckhbw xmmC, xmmF ; xmmC=(10 12 14 16 18 1A 1C 1E) 270 271 movdqa xmmD, xmmB 272 punpcklbw xmmB, xmmF ; xmmB=(01 03 05 07 09 0B 0D 0F) 273 punpckhbw xmmD, xmmF ; xmmD=(11 13 15 17 19 1B 1D 1F) 274 275 movdqa xmmG, xmmE 276 punpcklbw xmmE, xmmF ; xmmE=(20 22 24 26 28 2A 2C 2E) 277 punpckhbw xmmG, xmmF ; xmmG=(30 32 34 36 38 3A 3C 3E) 278 279 punpcklbw xmmF, xmmH 280 punpckhbw xmmH, xmmH 281 psrlw xmmF, BYTE_BIT ; xmmF=(21 23 25 27 29 2B 2D 2F) 282 psrlw xmmH, BYTE_BIT ; xmmH=(31 33 35 37 39 3B 3D 3F) 283 284%endif ; RGB_PIXELSIZE ; --------------- 285 286 ; xmm0=R(02468ACE)=RE, xmm2=G(02468ACE)=GE, xmm4=B(02468ACE)=BE 287 ; xmm1=R(13579BDF)=RO, xmm3=G(13579BDF)=GO, xmm5=B(13579BDF)=BO 288 289 ; (Original) 290 ; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B 291 ; 292 ; (This implementation) 293 ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G 294 295 movdqa xmm6, xmm1 296 punpcklwd xmm1, xmm3 297 punpckhwd xmm6, xmm3 298 pmaddwd xmm1, [GOTOFF(eax,PW_F0299_F0337)] ; xmm1=ROL*FIX(0.299)+GOL*FIX(0.337) 299 pmaddwd xmm6, [GOTOFF(eax,PW_F0299_F0337)] ; xmm6=ROH*FIX(0.299)+GOH*FIX(0.337) 300 301 movdqa xmm7, xmm6 ; xmm7=ROH*FIX(0.299)+GOH*FIX(0.337) 302 303 movdqa xmm6, xmm0 304 punpcklwd xmm0, xmm2 305 punpckhwd xmm6, xmm2 306 pmaddwd xmm0, [GOTOFF(eax,PW_F0299_F0337)] ; xmm0=REL*FIX(0.299)+GEL*FIX(0.337) 307 pmaddwd xmm6, [GOTOFF(eax,PW_F0299_F0337)] ; xmm6=REH*FIX(0.299)+GEH*FIX(0.337) 308 309 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=REL*FIX(0.299)+GEL*FIX(0.337) 310 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=REH*FIX(0.299)+GEH*FIX(0.337) 311 312 movdqa xmm0, xmm5 ; xmm0=BO 313 movdqa xmm6, xmm4 ; xmm6=BE 314 315 movdqa xmm4, xmm0 316 punpcklwd xmm0, xmm3 317 punpckhwd xmm4, xmm3 318 pmaddwd xmm0, [GOTOFF(eax,PW_F0114_F0250)] ; xmm0=BOL*FIX(0.114)+GOL*FIX(0.250) 319 pmaddwd xmm4, [GOTOFF(eax,PW_F0114_F0250)] ; xmm4=BOH*FIX(0.114)+GOH*FIX(0.250) 320 321 movdqa xmm3, [GOTOFF(eax,PD_ONEHALF)] ; xmm3=[PD_ONEHALF] 322 323 paddd xmm0, xmm1 324 paddd xmm4, xmm7 325 paddd xmm0, xmm3 326 paddd xmm4, xmm3 327 psrld xmm0, SCALEBITS ; xmm0=YOL 328 psrld xmm4, SCALEBITS ; xmm4=YOH 329 packssdw xmm0, xmm4 ; xmm0=YO 330 331 movdqa xmm4, xmm6 332 punpcklwd xmm6, xmm2 333 punpckhwd xmm4, xmm2 334 pmaddwd xmm6, [GOTOFF(eax,PW_F0114_F0250)] ; xmm6=BEL*FIX(0.114)+GEL*FIX(0.250) 335 pmaddwd xmm4, [GOTOFF(eax,PW_F0114_F0250)] ; xmm4=BEH*FIX(0.114)+GEH*FIX(0.250) 336 337 movdqa xmm2, [GOTOFF(eax,PD_ONEHALF)] ; xmm2=[PD_ONEHALF] 338 339 paddd xmm6, XMMWORD [wk(0)] 340 paddd xmm4, XMMWORD [wk(1)] 341 paddd xmm6, xmm2 342 paddd xmm4, xmm2 343 psrld xmm6, SCALEBITS ; xmm6=YEL 344 psrld xmm4, SCALEBITS ; xmm4=YEH 345 packssdw xmm6, xmm4 ; xmm6=YE 346 347 psllw xmm0, BYTE_BIT 348 por xmm6, xmm0 ; xmm6=Y 349 movdqa XMMWORD [edi], xmm6 ; Save Y 350 351 sub ecx, byte SIZEOF_XMMWORD 352 add esi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD ; inptr 353 add edi, byte SIZEOF_XMMWORD ; outptr0 354 cmp ecx, byte SIZEOF_XMMWORD 355 jae near .columnloop 356 test ecx, ecx 357 jnz near .column_ld1 358 359 pop ecx ; col 360 pop esi 361 pop edi 362 poppic eax 363 364 add esi, byte SIZEOF_JSAMPROW ; input_buf 365 add edi, byte SIZEOF_JSAMPROW 366 dec eax ; num_rows 367 jg near .rowloop 368 369.return: 370 pop edi 371 pop esi 372; pop edx ; need not be preserved 373; pop ecx ; need not be preserved 374 pop ebx 375 mov esp, ebp ; esp <- aligned ebp 376 pop esp ; esp <- original ebp 377 pop ebp 378 ret 379 380; For some reason, the OS X linker does not honor the request to align the 381; segment unless we do this. 382 align 32 383