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| 1 ; |
| 2 ; ji3dnflt.asm - floating-point IDCT (3DNow! & MMX) |
| 3 ; |
| 4 ; Copyright 2009 Pierre Ossman <ossman@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 ; This file contains a floating-point implementation of the inverse DCT |
| 18 ; (Discrete Cosine Transform). The following code is based directly on |
| 19 ; the IJG's original jidctflt.c; see the jidctflt.c for more details. |
| 20 ; |
| 21 ; [TAB8] |
| 22 |
| 23 %include "jsimdext.inc" |
| 24 %include "jdct.inc" |
| 25 |
| 26 ; -------------------------------------------------------------------------- |
| 27 SECTION SEG_CONST |
| 28 |
| 29 alignz 16 |
| 30 global EXTN(jconst_idct_float_3dnow) |
| 31 |
| 32 EXTN(jconst_idct_float_3dnow): |
| 33 |
| 34 PD_1_414 times 2 dd 1.414213562373095048801689 |
| 35 PD_1_847 times 2 dd 1.847759065022573512256366 |
| 36 PD_1_082 times 2 dd 1.082392200292393968799446 |
| 37 PD_2_613 times 2 dd 2.613125929752753055713286 |
| 38 PD_RNDINT_MAGIC times 2 dd 100663296.0 ; (float)(0x00C00000 << 3) |
| 39 PB_CENTERJSAMP times 8 db CENTERJSAMPLE |
| 40 |
| 41 alignz 16 |
| 42 |
| 43 ; -------------------------------------------------------------------------- |
| 44 SECTION SEG_TEXT |
| 45 BITS 32 |
| 46 ; |
| 47 ; Perform dequantization and inverse DCT on one block of coefficients. |
| 48 ; |
| 49 ; GLOBAL(void) |
| 50 ; jsimd_idct_float_3dnow (void * dct_table, JCOEFPTR coef_block, |
| 51 ; JSAMPARRAY output_buf, JDIMENSION output_col) |
| 52 ; |
| 53 |
| 54 %define dct_table(b) (b)+8 ; void * dct_table |
| 55 %define coef_block(b) (b)+12 ; JCOEFPTR coef_block |
| 56 %define output_buf(b) (b)+16 ; JSAMPARRAY output_buf |
| 57 %define output_col(b) (b)+20 ; JDIMENSION output_col |
| 58 |
| 59 %define original_ebp ebp+0 |
| 60 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] |
| 61 %define WK_NUM 2 |
| 62 %define workspace wk(0)-DCTSIZE2*SIZEOF_FAST_FLOAT |
| 63 ; FAST_FLOAT workspace[DCTSIZE2] |
| 64 |
| 65 align 16 |
| 66 global EXTN(jsimd_idct_float_3dnow) |
| 67 |
| 68 EXTN(jsimd_idct_float_3dnow): |
| 69 push ebp |
| 70 mov eax,esp ; eax = original ebp |
| 71 sub esp, byte 4 |
| 72 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits |
| 73 mov [esp],eax |
| 74 mov ebp,esp ; ebp = aligned ebp |
| 75 lea esp, [workspace] |
| 76 push ebx |
| 77 ; push ecx ; need not be preserved |
| 78 ; push edx ; need not be preserved |
| 79 push esi |
| 80 push edi |
| 81 |
| 82 get_GOT ebx ; get GOT address |
| 83 |
| 84 ; ---- Pass 1: process columns from input, store into work array. |
| 85 |
| 86 ; mov eax, [original_ebp] |
| 87 mov edx, POINTER [dct_table(eax)] ; quantptr |
| 88 mov esi, JCOEFPTR [coef_block(eax)] ; inptr |
| 89 lea edi, [workspace] ; FAST_FLOAT * wsptr |
| 90 mov ecx, DCTSIZE/2 ; ctr |
| 91 alignx 16,7 |
| 92 .columnloop: |
| 93 %ifndef NO_ZERO_COLUMN_TEST_FLOAT_3DNOW |
| 94 mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 95 or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 96 jnz short .columnDCT |
| 97 |
| 98 pushpic ebx ; save GOT address |
| 99 mov ebx, DWORD [DWBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| 100 mov eax, DWORD [DWBLOCK(4,0,esi,SIZEOF_JCOEF)] |
| 101 or ebx, DWORD [DWBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| 102 or eax, DWORD [DWBLOCK(6,0,esi,SIZEOF_JCOEF)] |
| 103 or ebx, DWORD [DWBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| 104 or eax,ebx |
| 105 poppic ebx ; restore GOT address |
| 106 jnz short .columnDCT |
| 107 |
| 108 ; -- AC terms all zero |
| 109 |
| 110 movd mm0, DWORD [DWBLOCK(0,0,esi,SIZEOF_JCOEF)] |
| 111 |
| 112 punpcklwd mm0,mm0 |
| 113 psrad mm0,(DWORD_BIT-WORD_BIT) |
| 114 pi2fd mm0,mm0 |
| 115 |
| 116 pfmul mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 117 |
| 118 movq mm1,mm0 |
| 119 punpckldq mm0,mm0 |
| 120 punpckhdq mm1,mm1 |
| 121 |
| 122 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], mm0 |
| 123 movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], mm0 |
| 124 movq MMWORD [MMBLOCK(0,2,edi,SIZEOF_FAST_FLOAT)], mm0 |
| 125 movq MMWORD [MMBLOCK(0,3,edi,SIZEOF_FAST_FLOAT)], mm0 |
| 126 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], mm1 |
| 127 movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], mm1 |
| 128 movq MMWORD [MMBLOCK(1,2,edi,SIZEOF_FAST_FLOAT)], mm1 |
| 129 movq MMWORD [MMBLOCK(1,3,edi,SIZEOF_FAST_FLOAT)], mm1 |
| 130 jmp near .nextcolumn |
| 131 alignx 16,7 |
| 132 %endif |
| 133 .columnDCT: |
| 134 |
| 135 ; -- Even part |
| 136 |
| 137 movd mm0, DWORD [DWBLOCK(0,0,esi,SIZEOF_JCOEF)] |
| 138 movd mm1, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 139 movd mm2, DWORD [DWBLOCK(4,0,esi,SIZEOF_JCOEF)] |
| 140 movd mm3, DWORD [DWBLOCK(6,0,esi,SIZEOF_JCOEF)] |
| 141 |
| 142 punpcklwd mm0,mm0 |
| 143 punpcklwd mm1,mm1 |
| 144 psrad mm0,(DWORD_BIT-WORD_BIT) |
| 145 psrad mm1,(DWORD_BIT-WORD_BIT) |
| 146 pi2fd mm0,mm0 |
| 147 pi2fd mm1,mm1 |
| 148 |
| 149 pfmul mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 150 pfmul mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 151 |
| 152 punpcklwd mm2,mm2 |
| 153 punpcklwd mm3,mm3 |
| 154 psrad mm2,(DWORD_BIT-WORD_BIT) |
| 155 psrad mm3,(DWORD_BIT-WORD_BIT) |
| 156 pi2fd mm2,mm2 |
| 157 pi2fd mm3,mm3 |
| 158 |
| 159 pfmul mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 160 pfmul mm3, MMWORD [MMBLOCK(6,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 161 |
| 162 movq mm4,mm0 |
| 163 movq mm5,mm1 |
| 164 pfsub mm0,mm2 ; mm0=tmp11 |
| 165 pfsub mm1,mm3 |
| 166 pfadd mm4,mm2 ; mm4=tmp10 |
| 167 pfadd mm5,mm3 ; mm5=tmp13 |
| 168 |
| 169 pfmul mm1,[GOTOFF(ebx,PD_1_414)] |
| 170 pfsub mm1,mm5 ; mm1=tmp12 |
| 171 |
| 172 movq mm6,mm4 |
| 173 movq mm7,mm0 |
| 174 pfsub mm4,mm5 ; mm4=tmp3 |
| 175 pfsub mm0,mm1 ; mm0=tmp2 |
| 176 pfadd mm6,mm5 ; mm6=tmp0 |
| 177 pfadd mm7,mm1 ; mm7=tmp1 |
| 178 |
| 179 movq MMWORD [wk(1)], mm4 ; tmp3 |
| 180 movq MMWORD [wk(0)], mm0 ; tmp2 |
| 181 |
| 182 ; -- Odd part |
| 183 |
| 184 movd mm2, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 185 movd mm3, DWORD [DWBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| 186 movd mm5, DWORD [DWBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| 187 movd mm1, DWORD [DWBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| 188 |
| 189 punpcklwd mm2,mm2 |
| 190 punpcklwd mm3,mm3 |
| 191 psrad mm2,(DWORD_BIT-WORD_BIT) |
| 192 psrad mm3,(DWORD_BIT-WORD_BIT) |
| 193 pi2fd mm2,mm2 |
| 194 pi2fd mm3,mm3 |
| 195 |
| 196 pfmul mm2, MMWORD [MMBLOCK(1,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 197 pfmul mm3, MMWORD [MMBLOCK(3,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 198 |
| 199 punpcklwd mm5,mm5 |
| 200 punpcklwd mm1,mm1 |
| 201 psrad mm5,(DWORD_BIT-WORD_BIT) |
| 202 psrad mm1,(DWORD_BIT-WORD_BIT) |
| 203 pi2fd mm5,mm5 |
| 204 pi2fd mm1,mm1 |
| 205 |
| 206 pfmul mm5, MMWORD [MMBLOCK(5,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 207 pfmul mm1, MMWORD [MMBLOCK(7,0,edx,SIZEOF_FLOAT_MULT_TYPE)] |
| 208 |
| 209 movq mm4,mm2 |
| 210 movq mm0,mm5 |
| 211 pfadd mm2,mm1 ; mm2=z11 |
| 212 pfadd mm5,mm3 ; mm5=z13 |
| 213 pfsub mm4,mm1 ; mm4=z12 |
| 214 pfsub mm0,mm3 ; mm0=z10 |
| 215 |
| 216 movq mm1,mm2 |
| 217 pfsub mm2,mm5 |
| 218 pfadd mm1,mm5 ; mm1=tmp7 |
| 219 |
| 220 pfmul mm2,[GOTOFF(ebx,PD_1_414)] ; mm2=tmp11 |
| 221 |
| 222 movq mm3,mm0 |
| 223 pfadd mm0,mm4 |
| 224 pfmul mm0,[GOTOFF(ebx,PD_1_847)] ; mm0=z5 |
| 225 pfmul mm3,[GOTOFF(ebx,PD_2_613)] ; mm3=(z10 * 2.613125930) |
| 226 pfmul mm4,[GOTOFF(ebx,PD_1_082)] ; mm4=(z12 * 1.082392200) |
| 227 pfsubr mm3,mm0 ; mm3=tmp12 |
| 228 pfsub mm4,mm0 ; mm4=tmp10 |
| 229 |
| 230 ; -- Final output stage |
| 231 |
| 232 pfsub mm3,mm1 ; mm3=tmp6 |
| 233 movq mm5,mm6 |
| 234 movq mm0,mm7 |
| 235 pfadd mm6,mm1 ; mm6=data0=(00 01) |
| 236 pfadd mm7,mm3 ; mm7=data1=(10 11) |
| 237 pfsub mm5,mm1 ; mm5=data7=(70 71) |
| 238 pfsub mm0,mm3 ; mm0=data6=(60 61) |
| 239 pfsub mm2,mm3 ; mm2=tmp5 |
| 240 |
| 241 movq mm1,mm6 ; transpose coefficients |
| 242 punpckldq mm6,mm7 ; mm6=(00 10) |
| 243 punpckhdq mm1,mm7 ; mm1=(01 11) |
| 244 movq mm3,mm0 ; transpose coefficients |
| 245 punpckldq mm0,mm5 ; mm0=(60 70) |
| 246 punpckhdq mm3,mm5 ; mm3=(61 71) |
| 247 |
| 248 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], mm6 |
| 249 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], mm1 |
| 250 movq MMWORD [MMBLOCK(0,3,edi,SIZEOF_FAST_FLOAT)], mm0 |
| 251 movq MMWORD [MMBLOCK(1,3,edi,SIZEOF_FAST_FLOAT)], mm3 |
| 252 |
| 253 movq mm7, MMWORD [wk(0)] ; mm7=tmp2 |
| 254 movq mm5, MMWORD [wk(1)] ; mm5=tmp3 |
| 255 |
| 256 pfadd mm4,mm2 ; mm4=tmp4 |
| 257 movq mm6,mm7 |
| 258 movq mm1,mm5 |
| 259 pfadd mm7,mm2 ; mm7=data2=(20 21) |
| 260 pfadd mm5,mm4 ; mm5=data4=(40 41) |
| 261 pfsub mm6,mm2 ; mm6=data5=(50 51) |
| 262 pfsub mm1,mm4 ; mm1=data3=(30 31) |
| 263 |
| 264 movq mm0,mm7 ; transpose coefficients |
| 265 punpckldq mm7,mm1 ; mm7=(20 30) |
| 266 punpckhdq mm0,mm1 ; mm0=(21 31) |
| 267 movq mm3,mm5 ; transpose coefficients |
| 268 punpckldq mm5,mm6 ; mm5=(40 50) |
| 269 punpckhdq mm3,mm6 ; mm3=(41 51) |
| 270 |
| 271 movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], mm7 |
| 272 movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], mm0 |
| 273 movq MMWORD [MMBLOCK(0,2,edi,SIZEOF_FAST_FLOAT)], mm5 |
| 274 movq MMWORD [MMBLOCK(1,2,edi,SIZEOF_FAST_FLOAT)], mm3 |
| 275 |
| 276 .nextcolumn: |
| 277 add esi, byte 2*SIZEOF_JCOEF ; coef_block |
| 278 add edx, byte 2*SIZEOF_FLOAT_MULT_TYPE ; quantptr |
| 279 add edi, byte 2*DCTSIZE*SIZEOF_FAST_FLOAT ; wsptr |
| 280 dec ecx ; ctr |
| 281 jnz near .columnloop |
| 282 |
| 283 ; -- Prefetch the next coefficient block |
| 284 |
| 285 prefetch [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 0*32] |
| 286 prefetch [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 1*32] |
| 287 prefetch [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 2*32] |
| 288 prefetch [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 3*32] |
| 289 |
| 290 ; ---- Pass 2: process rows from work array, store into output array. |
| 291 |
| 292 mov eax, [original_ebp] |
| 293 lea esi, [workspace] ; FAST_FLOAT * wsptr |
| 294 mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *) |
| 295 mov eax, JDIMENSION [output_col(eax)] |
| 296 mov ecx, DCTSIZE/2 ; ctr |
| 297 alignx 16,7 |
| 298 .rowloop: |
| 299 |
| 300 ; -- Even part |
| 301 |
| 302 movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_FAST_FLOAT)] |
| 303 movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_FAST_FLOAT)] |
| 304 movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_FAST_FLOAT)] |
| 305 movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_FAST_FLOAT)] |
| 306 |
| 307 movq mm4,mm0 |
| 308 movq mm5,mm1 |
| 309 pfsub mm0,mm2 ; mm0=tmp11 |
| 310 pfsub mm1,mm3 |
| 311 pfadd mm4,mm2 ; mm4=tmp10 |
| 312 pfadd mm5,mm3 ; mm5=tmp13 |
| 313 |
| 314 pfmul mm1,[GOTOFF(ebx,PD_1_414)] |
| 315 pfsub mm1,mm5 ; mm1=tmp12 |
| 316 |
| 317 movq mm6,mm4 |
| 318 movq mm7,mm0 |
| 319 pfsub mm4,mm5 ; mm4=tmp3 |
| 320 pfsub mm0,mm1 ; mm0=tmp2 |
| 321 pfadd mm6,mm5 ; mm6=tmp0 |
| 322 pfadd mm7,mm1 ; mm7=tmp1 |
| 323 |
| 324 movq MMWORD [wk(1)], mm4 ; tmp3 |
| 325 movq MMWORD [wk(0)], mm0 ; tmp2 |
| 326 |
| 327 ; -- Odd part |
| 328 |
| 329 movq mm2, MMWORD [MMBLOCK(1,0,esi,SIZEOF_FAST_FLOAT)] |
| 330 movq mm3, MMWORD [MMBLOCK(3,0,esi,SIZEOF_FAST_FLOAT)] |
| 331 movq mm5, MMWORD [MMBLOCK(5,0,esi,SIZEOF_FAST_FLOAT)] |
| 332 movq mm1, MMWORD [MMBLOCK(7,0,esi,SIZEOF_FAST_FLOAT)] |
| 333 |
| 334 movq mm4,mm2 |
| 335 movq mm0,mm5 |
| 336 pfadd mm2,mm1 ; mm2=z11 |
| 337 pfadd mm5,mm3 ; mm5=z13 |
| 338 pfsub mm4,mm1 ; mm4=z12 |
| 339 pfsub mm0,mm3 ; mm0=z10 |
| 340 |
| 341 movq mm1,mm2 |
| 342 pfsub mm2,mm5 |
| 343 pfadd mm1,mm5 ; mm1=tmp7 |
| 344 |
| 345 pfmul mm2,[GOTOFF(ebx,PD_1_414)] ; mm2=tmp11 |
| 346 |
| 347 movq mm3,mm0 |
| 348 pfadd mm0,mm4 |
| 349 pfmul mm0,[GOTOFF(ebx,PD_1_847)] ; mm0=z5 |
| 350 pfmul mm3,[GOTOFF(ebx,PD_2_613)] ; mm3=(z10 * 2.613125930) |
| 351 pfmul mm4,[GOTOFF(ebx,PD_1_082)] ; mm4=(z12 * 1.082392200) |
| 352 pfsubr mm3,mm0 ; mm3=tmp12 |
| 353 pfsub mm4,mm0 ; mm4=tmp10 |
| 354 |
| 355 ; -- Final output stage |
| 356 |
| 357 pfsub mm3,mm1 ; mm3=tmp6 |
| 358 movq mm5,mm6 |
| 359 movq mm0,mm7 |
| 360 pfadd mm6,mm1 ; mm6=data0=(00 10) |
| 361 pfadd mm7,mm3 ; mm7=data1=(01 11) |
| 362 pfsub mm5,mm1 ; mm5=data7=(07 17) |
| 363 pfsub mm0,mm3 ; mm0=data6=(06 16) |
| 364 pfsub mm2,mm3 ; mm2=tmp5 |
| 365 |
| 366 movq mm1,[GOTOFF(ebx,PD_RNDINT_MAGIC)] ; mm1=[PD_RNDINT_MAGIC] |
| 367 pcmpeqd mm3,mm3 |
| 368 psrld mm3,WORD_BIT ; mm3={0xFFFF 0x0000 0xFFFF 0x0000} |
| 369 |
| 370 pfadd mm6,mm1 ; mm6=roundint(data0/8)=(00 ** 10 **) |
| 371 pfadd mm7,mm1 ; mm7=roundint(data1/8)=(01 ** 11 **) |
| 372 pfadd mm0,mm1 ; mm0=roundint(data6/8)=(06 ** 16 **) |
| 373 pfadd mm5,mm1 ; mm5=roundint(data7/8)=(07 ** 17 **) |
| 374 |
| 375 pand mm6,mm3 ; mm6=(00 -- 10 --) |
| 376 pslld mm7,WORD_BIT ; mm7=(-- 01 -- 11) |
| 377 pand mm0,mm3 ; mm0=(06 -- 16 --) |
| 378 pslld mm5,WORD_BIT ; mm5=(-- 07 -- 17) |
| 379 por mm6,mm7 ; mm6=(00 01 10 11) |
| 380 por mm0,mm5 ; mm0=(06 07 16 17) |
| 381 |
| 382 movq mm1, MMWORD [wk(0)] ; mm1=tmp2 |
| 383 movq mm3, MMWORD [wk(1)] ; mm3=tmp3 |
| 384 |
| 385 pfadd mm4,mm2 ; mm4=tmp4 |
| 386 movq mm7,mm1 |
| 387 movq mm5,mm3 |
| 388 pfadd mm1,mm2 ; mm1=data2=(02 12) |
| 389 pfadd mm3,mm4 ; mm3=data4=(04 14) |
| 390 pfsub mm7,mm2 ; mm7=data5=(05 15) |
| 391 pfsub mm5,mm4 ; mm5=data3=(03 13) |
| 392 |
| 393 movq mm2,[GOTOFF(ebx,PD_RNDINT_MAGIC)] ; mm2=[PD_RNDINT_MAGIC] |
| 394 pcmpeqd mm4,mm4 |
| 395 psrld mm4,WORD_BIT ; mm4={0xFFFF 0x0000 0xFFFF 0x0000} |
| 396 |
| 397 pfadd mm3,mm2 ; mm3=roundint(data4/8)=(04 ** 14 **) |
| 398 pfadd mm7,mm2 ; mm7=roundint(data5/8)=(05 ** 15 **) |
| 399 pfadd mm1,mm2 ; mm1=roundint(data2/8)=(02 ** 12 **) |
| 400 pfadd mm5,mm2 ; mm5=roundint(data3/8)=(03 ** 13 **) |
| 401 |
| 402 pand mm3,mm4 ; mm3=(04 -- 14 --) |
| 403 pslld mm7,WORD_BIT ; mm7=(-- 05 -- 15) |
| 404 pand mm1,mm4 ; mm1=(02 -- 12 --) |
| 405 pslld mm5,WORD_BIT ; mm5=(-- 03 -- 13) |
| 406 por mm3,mm7 ; mm3=(04 05 14 15) |
| 407 por mm1,mm5 ; mm1=(02 03 12 13) |
| 408 |
| 409 movq mm2,[GOTOFF(ebx,PB_CENTERJSAMP)] ; mm2=[PB_CENTERJSAMP] |
| 410 |
| 411 packsswb mm6,mm3 ; mm6=(00 01 10 11 04 05 14 15) |
| 412 packsswb mm1,mm0 ; mm1=(02 03 12 13 06 07 16 17) |
| 413 paddb mm6,mm2 |
| 414 paddb mm1,mm2 |
| 415 |
| 416 movq mm4,mm6 ; transpose coefficients(phase 2) |
| 417 punpcklwd mm6,mm1 ; mm6=(00 01 02 03 10 11 12 13) |
| 418 punpckhwd mm4,mm1 ; mm4=(04 05 06 07 14 15 16 17) |
| 419 |
| 420 movq mm7,mm6 ; transpose coefficients(phase 3) |
| 421 punpckldq mm6,mm4 ; mm6=(00 01 02 03 04 05 06 07) |
| 422 punpckhdq mm7,mm4 ; mm7=(10 11 12 13 14 15 16 17) |
| 423 |
| 424 pushpic ebx ; save GOT address |
| 425 |
| 426 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] |
| 427 mov ebx, JSAMPROW [edi+1*SIZEOF_JSAMPROW] |
| 428 movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm6 |
| 429 movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm7 |
| 430 |
| 431 poppic ebx ; restore GOT address |
| 432 |
| 433 add esi, byte 2*SIZEOF_FAST_FLOAT ; wsptr |
| 434 add edi, byte 2*SIZEOF_JSAMPROW |
| 435 dec ecx ; ctr |
| 436 jnz near .rowloop |
| 437 |
| 438 femms ; empty MMX/3DNow! state |
| 439 |
| 440 pop edi |
| 441 pop esi |
| 442 ; pop edx ; need not be preserved |
| 443 ; pop ecx ; need not be preserved |
| 444 pop ebx |
| 445 mov esp,ebp ; esp <- aligned ebp |
| 446 pop esp ; esp <- original ebp |
| 447 pop ebp |
| 448 ret |
| 449 |
| 450 ; For some reason, the OS X linker does not honor the request to align the |
| 451 ; segment unless we do this. |
| 452 align 16 |
| OLD | NEW |
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Chromium Code Reviews
Issue 4134011:
Adds libjpeg-turbo to deps... (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/deps/