kc3-lang/libjpeg-turbo/simd/i386/jfdctint-sse2.asm
Branch
-
Show log
Commit
-
Hash : 5e27ca23
Author :
Date : 2025-09-19T14:21:49
x86: Reformat NASM code to improve readability (and simplify the checkstyle script)
-
simd/i386/jfdctint-sse2.asm
-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635
; ; Accurate integer FDCT (32-bit SSE2) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; Copyright (C) 2016, 2020, 2024-2025, D. R. Commander. ; ; Based on the x86 SIMD extension for IJG JPEG library ; Copyright (C) 1999-2006, MIYASAKA Masaru. ; For conditions of distribution and use, see copyright notice in jsimdext.inc ; ; This file should be assembled with NASM (Netwide Assembler) or Yasm. ; ; This file contains a slower but more accurate integer implementation of the ; forward DCT (Discrete Cosine Transform). The following code is based ; directly on the IJG's original jfdctint.c; see jfdctint.c for more details. %include "jsimdext.inc" %include "jdct.inc" ; -------------------------------------------------------------------------- %define CONST_BITS 13 %define PASS1_BITS 2 %define DESCALE_P1 (CONST_BITS - PASS1_BITS) %define DESCALE_P2 (CONST_BITS + PASS1_BITS) %if CONST_BITS == 13 F_0_298 equ 2446 ; FIX(0.298631336) F_0_390 equ 3196 ; FIX(0.390180644) F_0_541 equ 4433 ; FIX(0.541196100) F_0_765 equ 6270 ; FIX(0.765366865) F_0_899 equ 7373 ; FIX(0.899976223) F_1_175 equ 9633 ; FIX(1.175875602) F_1_501 equ 12299 ; FIX(1.501321110) F_1_847 equ 15137 ; FIX(1.847759065) F_1_961 equ 16069 ; FIX(1.961570560) F_2_053 equ 16819 ; FIX(2.053119869) F_2_562 equ 20995 ; FIX(2.562915447) F_3_072 equ 25172 ; FIX(3.072711026) %else ; NASM cannot do compile-time arithmetic on floating-point constants. %define DESCALE(x, n) (((x) + (1 << ((n) - 1))) >> (n)) F_0_298 equ DESCALE( 320652955, 30 - CONST_BITS) ; FIX(0.298631336) F_0_390 equ DESCALE( 418953276, 30 - CONST_BITS) ; FIX(0.390180644) F_0_541 equ DESCALE( 581104887, 30 - CONST_BITS) ; FIX(0.541196100) F_0_765 equ DESCALE( 821806413, 30 - CONST_BITS) ; FIX(0.765366865) F_0_899 equ DESCALE( 966342111, 30 - CONST_BITS) ; FIX(0.899976223) F_1_175 equ DESCALE(1262586813, 30 - CONST_BITS) ; FIX(1.175875602) F_1_501 equ DESCALE(1612031267, 30 - CONST_BITS) ; FIX(1.501321110) F_1_847 equ DESCALE(1984016188, 30 - CONST_BITS) ; FIX(1.847759065) F_1_961 equ DESCALE(2106220350, 30 - CONST_BITS) ; FIX(1.961570560) F_2_053 equ DESCALE(2204520673, 30 - CONST_BITS) ; FIX(2.053119869) F_2_562 equ DESCALE(2751909506, 30 - CONST_BITS) ; FIX(2.562915447) F_3_072 equ DESCALE(3299298341, 30 - CONST_BITS) ; FIX(3.072711026) %endif ; -------------------------------------------------------------------------- SECTION SEG_CONST ALIGNZ 32 GLOBAL_DATA(jconst_fdct_islow_sse2) EXTN(jconst_fdct_islow_sse2): PW_F130_F054 times 4 dw (F_0_541 + F_0_765), F_0_541 PW_F054_MF130 times 4 dw F_0_541, (F_0_541 - F_1_847) PW_MF078_F117 times 4 dw (F_1_175 - F_1_961), F_1_175 PW_F117_F078 times 4 dw F_1_175, (F_1_175 - F_0_390) PW_MF060_MF089 times 4 dw (F_0_298 - F_0_899), -F_0_899 PW_MF089_F060 times 4 dw -F_0_899, (F_1_501 - F_0_899) PW_MF050_MF256 times 4 dw (F_2_053 - F_2_562), -F_2_562 PW_MF256_F050 times 4 dw -F_2_562, (F_3_072 - F_2_562) PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1 - 1) PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2 - 1) PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS - 1) ALIGNZ 32 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; Perform the forward DCT on one block of samples. ; ; GLOBAL(void) ; jsimd_fdct_islow_sse2(DCTELEM *data) %define data(b) (b) + 8 ; DCTELEM *data %define original_ebp ebp + 0 %define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_XMMWORD ; xmmword wk[WK_NUM] %define WK_NUM 6 align 32 GLOBAL_FUNCTION(jsimd_fdct_islow_sse2) EXTN(jsimd_fdct_islow_sse2): push ebp mov eax, esp ; eax = original ebp sub esp, byte 4 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits mov [esp], eax mov ebp, esp ; ebp = aligned ebp lea esp, [wk(0)] PUSHPIC ebx ; push ecx ; unused ; push edx ; need not be preserved ; push esi ; unused ; push edi ; unused GET_GOT ebx ; get GOT address ; ---- Pass 1: process rows. mov edx, POINTER [data(eax)] ; (DCTELEM *) movdqa xmm0, XMMWORD [XMMBLOCK(0, 0, edx, SIZEOF_DCTELEM)] movdqa xmm1, XMMWORD [XMMBLOCK(1, 0, edx, SIZEOF_DCTELEM)] movdqa xmm2, XMMWORD [XMMBLOCK(2, 0, edx, SIZEOF_DCTELEM)] movdqa xmm3, XMMWORD [XMMBLOCK(3, 0, edx, SIZEOF_DCTELEM)] ; xmm0 = (00 01 02 03 04 05 06 07) ; xmm2 = (20 21 22 23 24 25 26 27) ; xmm1 = (10 11 12 13 14 15 16 17) ; xmm3 = (30 31 32 33 34 35 36 37) movdqa xmm4, xmm0 ; transpose coefficients(phase 1) punpcklwd xmm0, xmm1 ; xmm0 = (00 10 01 11 02 12 03 13) punpckhwd xmm4, xmm1 ; xmm4 = (04 14 05 15 06 16 07 17) movdqa xmm5, xmm2 ; transpose coefficients(phase 1) punpcklwd xmm2, xmm3 ; xmm2 = (20 30 21 31 22 32 23 33) punpckhwd xmm5, xmm3 ; xmm5 = (24 34 25 35 26 36 27 37) movdqa xmm6, XMMWORD [XMMBLOCK(4, 0, edx, SIZEOF_DCTELEM)] movdqa xmm7, XMMWORD [XMMBLOCK(5, 0, edx, SIZEOF_DCTELEM)] movdqa xmm1, XMMWORD [XMMBLOCK(6, 0, edx, SIZEOF_DCTELEM)] movdqa xmm3, XMMWORD [XMMBLOCK(7, 0, edx, SIZEOF_DCTELEM)] ; xmm6 = ( 4 12 20 28 36 44 52 60) ; xmm1 = ( 6 14 22 30 38 46 54 62) ; xmm7 = ( 5 13 21 29 37 45 53 61) ; xmm3 = ( 7 15 23 31 39 47 55 63) movdqa XMMWORD [wk(0)], xmm2 ; wk(0) = (20 30 21 31 22 32 23 33) movdqa XMMWORD [wk(1)], xmm5 ; wk(1) = (24 34 25 35 26 36 27 37) movdqa xmm2, xmm6 ; transpose coefficients(phase 1) punpcklwd xmm6, xmm7 ; xmm6 = (40 50 41 51 42 52 43 53) punpckhwd xmm2, xmm7 ; xmm2 = (44 54 45 55 46 56 47 57) movdqa xmm5, xmm1 ; transpose coefficients(phase 1) punpcklwd xmm1, xmm3 ; xmm1 = (60 70 61 71 62 72 63 73) punpckhwd xmm5, xmm3 ; xmm5 = (64 74 65 75 66 76 67 77) movdqa xmm7, xmm6 ; transpose coefficients(phase 2) punpckldq xmm6, xmm1 ; xmm6 = (40 50 60 70 41 51 61 71) punpckhdq xmm7, xmm1 ; xmm7 = (42 52 62 72 43 53 63 73) movdqa xmm3, xmm2 ; transpose coefficients(phase 2) punpckldq xmm2, xmm5 ; xmm2 = (44 54 64 74 45 55 65 75) punpckhdq xmm3, xmm5 ; xmm3 = (46 56 66 76 47 57 67 77) movdqa xmm1, XMMWORD [wk(0)] ; xmm1 = (20 30 21 31 22 32 23 33) movdqa xmm5, XMMWORD [wk(1)] ; xmm5 = (24 34 25 35 26 36 27 37) movdqa XMMWORD [wk(2)], xmm7 ; wk(2) = (42 52 62 72 43 53 63 73) movdqa XMMWORD [wk(3)], xmm2 ; wk(3) = (44 54 64 74 45 55 65 75) movdqa xmm7, xmm0 ; transpose coefficients(phase 2) punpckldq xmm0, xmm1 ; xmm0 = (00 10 20 30 01 11 21 31) punpckhdq xmm7, xmm1 ; xmm7 = (02 12 22 32 03 13 23 33) movdqa xmm2, xmm4 ; transpose coefficients(phase 2) punpckldq xmm4, xmm5 ; xmm4 = (04 14 24 34 05 15 25 35) punpckhdq xmm2, xmm5 ; xmm2 = (06 16 26 36 07 17 27 37) movdqa xmm1, xmm0 ; transpose coefficients(phase 3) punpcklqdq xmm0, xmm6 ; xmm0 = (00 10 20 30 40 50 60 70) = data0 punpckhqdq xmm1, xmm6 ; xmm1 = (01 11 21 31 41 51 61 71) = data1 movdqa xmm5, xmm2 ; transpose coefficients(phase 3) punpcklqdq xmm2, xmm3 ; xmm2 = (06 16 26 36 46 56 66 76) = data6 punpckhqdq xmm5, xmm3 ; xmm5 = (07 17 27 37 47 57 67 77) = data7 movdqa xmm6, xmm1 movdqa xmm3, xmm0 psubw xmm1, xmm2 ; xmm1 = data1 - data6 = tmp6 psubw xmm0, xmm5 ; xmm0 = data0 - data7 = tmp7 paddw xmm6, xmm2 ; xmm6 = data1 + data6 = tmp1 paddw xmm3, xmm5 ; xmm3 = data0 + data7 = tmp0 movdqa xmm2, XMMWORD [wk(2)] ; xmm2 = (42 52 62 72 43 53 63 73) movdqa xmm5, XMMWORD [wk(3)] ; xmm5 = (44 54 64 74 45 55 65 75) movdqa XMMWORD [wk(0)], xmm1 ; wk(0) = tmp6 movdqa XMMWORD [wk(1)], xmm0 ; wk(1) = tmp7 movdqa xmm1, xmm7 ; transpose coefficients(phase 3) punpcklqdq xmm7, xmm2 ; xmm7 = (02 12 22 32 42 52 62 72) = data2 punpckhqdq xmm1, xmm2 ; xmm1 = (03 13 23 33 43 53 63 73) = data3 movdqa xmm0, xmm4 ; transpose coefficients(phase 3) punpcklqdq xmm4, xmm5 ; xmm4 = (04 14 24 34 44 54 64 74) = data4 punpckhqdq xmm0, xmm5 ; xmm0 = (05 15 25 35 45 55 65 75) = data5 movdqa xmm2, xmm1 movdqa xmm5, xmm7 paddw xmm1, xmm4 ; xmm1 = data3 + data4 = tmp3 paddw xmm7, xmm0 ; xmm7 = data2 + data5 = tmp2 psubw xmm2, xmm4 ; xmm2 = data3 - data4 = tmp4 psubw xmm5, xmm0 ; xmm5 = data2 - data5 = tmp5 ; -- Even part movdqa xmm4, xmm3 movdqa xmm0, xmm6 paddw xmm3, xmm1 ; xmm3 = tmp10 paddw xmm6, xmm7 ; xmm6 = tmp11 psubw xmm4, xmm1 ; xmm4 = tmp13 psubw xmm0, xmm7 ; xmm0 = tmp12 movdqa xmm1, xmm3 paddw xmm3, xmm6 ; xmm3 = tmp10 + tmp11 psubw xmm1, xmm6 ; xmm1 = tmp10 - tmp11 psllw xmm3, PASS1_BITS ; xmm3 = data0 psllw xmm1, PASS1_BITS ; xmm1 = data4 movdqa XMMWORD [wk(2)], xmm3 ; wk(2) = data0 movdqa XMMWORD [wk(3)], xmm1 ; wk(3) = data4 ; (Original) ; z1 = (tmp12 + tmp13) * 0.541196100; ; data2 = z1 + tmp13 * 0.765366865; ; data6 = z1 + tmp12 * -1.847759065; ; ; (This implementation) ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); movdqa xmm7, xmm4 ; xmm4 = tmp13 movdqa xmm6, xmm4 punpcklwd xmm7, xmm0 ; xmm0 = tmp12 punpckhwd xmm6, xmm0 movdqa xmm4, xmm7 movdqa xmm0, xmm6 pmaddwd xmm7, [GOTOFF(ebx, PW_F130_F054)] ; xmm7 = data2L pmaddwd xmm6, [GOTOFF(ebx, PW_F130_F054)] ; xmm6 = data2H pmaddwd xmm4, [GOTOFF(ebx, PW_F054_MF130)] ; xmm4 = data6L pmaddwd xmm0, [GOTOFF(ebx, PW_F054_MF130)] ; xmm0 = data6H paddd xmm7, [GOTOFF(ebx, PD_DESCALE_P1)] paddd xmm6, [GOTOFF(ebx, PD_DESCALE_P1)] psrad xmm7, DESCALE_P1 psrad xmm6, DESCALE_P1 paddd xmm4, [GOTOFF(ebx, PD_DESCALE_P1)] paddd xmm0, [GOTOFF(ebx, PD_DESCALE_P1)] psrad xmm4, DESCALE_P1 psrad xmm0, DESCALE_P1 packssdw xmm7, xmm6 ; xmm7 = data2 packssdw xmm4, xmm0 ; xmm4 = data6 movdqa XMMWORD [wk(4)], xmm7 ; wk(4) = data2 movdqa XMMWORD [wk(5)], xmm4 ; wk(5) = data6 ; -- Odd part movdqa xmm3, XMMWORD [wk(0)] ; xmm3 = tmp6 movdqa xmm1, XMMWORD [wk(1)] ; xmm1 = tmp7 movdqa xmm6, xmm2 ; xmm2 = tmp4 movdqa xmm0, xmm5 ; xmm5 = tmp5 paddw xmm6, xmm3 ; xmm6 = z3 paddw xmm0, xmm1 ; xmm0 = z4 ; (Original) ; z5 = (z3 + z4) * 1.175875602; ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; ; z3 += z5; z4 += z5; ; ; (This implementation) ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); movdqa xmm7, xmm6 movdqa xmm4, xmm6 punpcklwd xmm7, xmm0 punpckhwd xmm4, xmm0 movdqa xmm6, xmm7 movdqa xmm0, xmm4 pmaddwd xmm7, [GOTOFF(ebx, PW_MF078_F117)] ; xmm7 = z3L pmaddwd xmm4, [GOTOFF(ebx, PW_MF078_F117)] ; xmm4 = z3H pmaddwd xmm6, [GOTOFF(ebx, PW_F117_F078)] ; xmm6 = z4L pmaddwd xmm0, [GOTOFF(ebx, PW_F117_F078)] ; xmm0 = z4H movdqa XMMWORD [wk(0)], xmm7 ; wk(0) = z3L movdqa XMMWORD [wk(1)], xmm4 ; wk(1) = z3H ; (Original) ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; ; ; (This implementation) ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); ; data7 = tmp4 + z3; data5 = tmp5 + z4; ; data3 = tmp6 + z3; data1 = tmp7 + z4; movdqa xmm7, xmm2 movdqa xmm4, xmm2 punpcklwd xmm7, xmm1 punpckhwd xmm4, xmm1 movdqa xmm2, xmm7 movdqa xmm1, xmm4 pmaddwd xmm7, [GOTOFF(ebx, PW_MF060_MF089)] ; xmm7 = tmp4L pmaddwd xmm4, [GOTOFF(ebx, PW_MF060_MF089)] ; xmm4 = tmp4H pmaddwd xmm2, [GOTOFF(ebx, PW_MF089_F060)] ; xmm2 = tmp7L pmaddwd xmm1, [GOTOFF(ebx, PW_MF089_F060)] ; xmm1 = tmp7H paddd xmm7, XMMWORD [wk(0)] ; xmm7 = data7L paddd xmm4, XMMWORD [wk(1)] ; xmm4 = data7H paddd xmm2, xmm6 ; xmm2 = data1L paddd xmm1, xmm0 ; xmm1 = data1H paddd xmm7, [GOTOFF(ebx, PD_DESCALE_P1)] paddd xmm4, [GOTOFF(ebx, PD_DESCALE_P1)] psrad xmm7, DESCALE_P1 psrad xmm4, DESCALE_P1 paddd xmm2, [GOTOFF(ebx, PD_DESCALE_P1)] paddd xmm1, [GOTOFF(ebx, PD_DESCALE_P1)] psrad xmm2, DESCALE_P1 psrad xmm1, DESCALE_P1 packssdw xmm7, xmm4 ; xmm7 = data7 packssdw xmm2, xmm1 ; xmm2 = data1 movdqa xmm4, xmm5 movdqa xmm1, xmm5 punpcklwd xmm4, xmm3 punpckhwd xmm1, xmm3 movdqa xmm5, xmm4 movdqa xmm3, xmm1 pmaddwd xmm4, [GOTOFF(ebx, PW_MF050_MF256)] ; xmm4 = tmp5L pmaddwd xmm1, [GOTOFF(ebx, PW_MF050_MF256)] ; xmm1 = tmp5H pmaddwd xmm5, [GOTOFF(ebx, PW_MF256_F050)] ; xmm5 = tmp6L pmaddwd xmm3, [GOTOFF(ebx, PW_MF256_F050)] ; xmm3 = tmp6H paddd xmm4, xmm6 ; xmm4 = data5L paddd xmm1, xmm0 ; xmm1 = data5H paddd xmm5, XMMWORD [wk(0)] ; xmm5 = data3L paddd xmm3, XMMWORD [wk(1)] ; xmm3 = data3H paddd xmm4, [GOTOFF(ebx, PD_DESCALE_P1)] paddd xmm1, [GOTOFF(ebx, PD_DESCALE_P1)] psrad xmm4, DESCALE_P1 psrad xmm1, DESCALE_P1 paddd xmm5, [GOTOFF(ebx, PD_DESCALE_P1)] paddd xmm3, [GOTOFF(ebx, PD_DESCALE_P1)] psrad xmm5, DESCALE_P1 psrad xmm3, DESCALE_P1 packssdw xmm4, xmm1 ; xmm4 = data5 packssdw xmm5, xmm3 ; xmm5 = data3 ; ---- Pass 2: process columns. ; mov edx, POINTER [data(eax)] ; (DCTELEM *) movdqa xmm6, XMMWORD [wk(2)] ; xmm6 = col0 movdqa xmm0, XMMWORD [wk(4)] ; xmm0 = col2 ; xmm6 = (00 10 20 30 40 50 60 70) ; xmm0 = (02 12 22 32 42 52 62 72) ; xmm2 = (01 11 21 31 41 51 61 71) ; xmm5 = (03 13 23 33 43 53 63 73) movdqa xmm1, xmm6 ; transpose coefficients(phase 1) punpcklwd xmm6, xmm2 ; xmm6 = (00 01 10 11 20 21 30 31) punpckhwd xmm1, xmm2 ; xmm1 = (40 41 50 51 60 61 70 71) movdqa xmm3, xmm0 ; transpose coefficients(phase 1) punpcklwd xmm0, xmm5 ; xmm0 = (02 03 12 13 22 23 32 33) punpckhwd xmm3, xmm5 ; xmm3 = (42 43 52 53 62 63 72 73) movdqa xmm2, XMMWORD [wk(3)] ; xmm2 = col4 movdqa xmm5, XMMWORD [wk(5)] ; xmm5 = col6 ; xmm2 = (04 14 24 34 44 54 64 74) ; xmm5 = (06 16 26 36 46 56 66 76) ; xmm4 = (05 15 25 35 45 55 65 75) ; xmm7 = (07 17 27 37 47 57 67 77) movdqa XMMWORD [wk(0)], xmm0 ; wk(0) = (02 03 12 13 22 23 32 33) movdqa XMMWORD [wk(1)], xmm3 ; wk(1) = (42 43 52 53 62 63 72 73) movdqa xmm0, xmm2 ; transpose coefficients(phase 1) punpcklwd xmm2, xmm4 ; xmm2 = (04 05 14 15 24 25 34 35) punpckhwd xmm0, xmm4 ; xmm0 = (44 45 54 55 64 65 74 75) movdqa xmm3, xmm5 ; transpose coefficients(phase 1) punpcklwd xmm5, xmm7 ; xmm5 = (06 07 16 17 26 27 36 37) punpckhwd xmm3, xmm7 ; xmm3 = (46 47 56 57 66 67 76 77) movdqa xmm4, xmm2 ; transpose coefficients(phase 2) punpckldq xmm2, xmm5 ; xmm2 = (04 05 06 07 14 15 16 17) punpckhdq xmm4, xmm5 ; xmm4 = (24 25 26 27 34 35 36 37) movdqa xmm7, xmm0 ; transpose coefficients(phase 2) punpckldq xmm0, xmm3 ; xmm0 = (44 45 46 47 54 55 56 57) punpckhdq xmm7, xmm3 ; xmm7 = (64 65 66 67 74 75 76 77) movdqa xmm5, XMMWORD [wk(0)] ; xmm5 = (02 03 12 13 22 23 32 33) movdqa xmm3, XMMWORD [wk(1)] ; xmm3 = (42 43 52 53 62 63 72 73) movdqa XMMWORD [wk(2)], xmm4 ; wk(2) = (24 25 26 27 34 35 36 37) movdqa XMMWORD [wk(3)], xmm0 ; wk(3) = (44 45 46 47 54 55 56 57) movdqa xmm4, xmm6 ; transpose coefficients(phase 2) punpckldq xmm6, xmm5 ; xmm6 = (00 01 02 03 10 11 12 13) punpckhdq xmm4, xmm5 ; xmm4 = (20 21 22 23 30 31 32 33) movdqa xmm0, xmm1 ; transpose coefficients(phase 2) punpckldq xmm1, xmm3 ; xmm1 = (40 41 42 43 50 51 52 53) punpckhdq xmm0, xmm3 ; xmm0 = (60 61 62 63 70 71 72 73) movdqa xmm5, xmm6 ; transpose coefficients(phase 3) punpcklqdq xmm6, xmm2 ; xmm6 = (00 01 02 03 04 05 06 07) = data0 punpckhqdq xmm5, xmm2 ; xmm5 = (10 11 12 13 14 15 16 17) = data1 movdqa xmm3, xmm0 ; transpose coefficients(phase 3) punpcklqdq xmm0, xmm7 ; xmm0 = (60 61 62 63 64 65 66 67) = data6 punpckhqdq xmm3, xmm7 ; xmm3 = (70 71 72 73 74 75 76 77) = data7 movdqa xmm2, xmm5 movdqa xmm7, xmm6 psubw xmm5, xmm0 ; xmm5 = data1 - data6 = tmp6 psubw xmm6, xmm3 ; xmm6 = data0 - data7 = tmp7 paddw xmm2, xmm0 ; xmm2 = data1 + data6 = tmp1 paddw xmm7, xmm3 ; xmm7 = data0 + data7 = tmp0 movdqa xmm0, XMMWORD [wk(2)] ; xmm0 = (24 25 26 27 34 35 36 37) movdqa xmm3, XMMWORD [wk(3)] ; xmm3 = (44 45 46 47 54 55 56 57) movdqa XMMWORD [wk(0)], xmm5 ; wk(0) = tmp6 movdqa XMMWORD [wk(1)], xmm6 ; wk(1) = tmp7 movdqa xmm5, xmm4 ; transpose coefficients(phase 3) punpcklqdq xmm4, xmm0 ; xmm4 = (20 21 22 23 24 25 26 27) = data2 punpckhqdq xmm5, xmm0 ; xmm5 = (30 31 32 33 34 35 36 37) = data3 movdqa xmm6, xmm1 ; transpose coefficients(phase 3) punpcklqdq xmm1, xmm3 ; xmm1 = (40 41 42 43 44 45 46 47) = data4 punpckhqdq xmm6, xmm3 ; xmm6 = (50 51 52 53 54 55 56 57) = data5 movdqa xmm0, xmm5 movdqa xmm3, xmm4 paddw xmm5, xmm1 ; xmm5 = data3 + data4 = tmp3 paddw xmm4, xmm6 ; xmm4 = data2 + data5 = tmp2 psubw xmm0, xmm1 ; xmm0 = data3 - data4 = tmp4 psubw xmm3, xmm6 ; xmm3 = data2 - data5 = tmp5 ; -- Even part movdqa xmm1, xmm7 movdqa xmm6, xmm2 paddw xmm7, xmm5 ; xmm7 = tmp10 paddw xmm2, xmm4 ; xmm2 = tmp11 psubw xmm1, xmm5 ; xmm1 = tmp13 psubw xmm6, xmm4 ; xmm6 = tmp12 movdqa xmm5, xmm7 paddw xmm7, xmm2 ; xmm7 = tmp10 + tmp11 psubw xmm5, xmm2 ; xmm5 = tmp10 - tmp11 paddw xmm7, [GOTOFF(ebx, PW_DESCALE_P2X)] paddw xmm5, [GOTOFF(ebx, PW_DESCALE_P2X)] psraw xmm7, PASS1_BITS ; xmm7 = data0 psraw xmm5, PASS1_BITS ; xmm5 = data4 movdqa XMMWORD [XMMBLOCK(0, 0, edx, SIZEOF_DCTELEM)], xmm7 movdqa XMMWORD [XMMBLOCK(4, 0, edx, SIZEOF_DCTELEM)], xmm5 ; (Original) ; z1 = (tmp12 + tmp13) * 0.541196100; ; data2 = z1 + tmp13 * 0.765366865; ; data6 = z1 + tmp12 * -1.847759065; ; ; (This implementation) ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); movdqa xmm4, xmm1 ; xmm1 = tmp13 movdqa xmm2, xmm1 punpcklwd xmm4, xmm6 ; xmm6 = tmp12 punpckhwd xmm2, xmm6 movdqa xmm1, xmm4 movdqa xmm6, xmm2 pmaddwd xmm4, [GOTOFF(ebx, PW_F130_F054)] ; xmm4 = data2L pmaddwd xmm2, [GOTOFF(ebx, PW_F130_F054)] ; xmm2 = data2H pmaddwd xmm1, [GOTOFF(ebx, PW_F054_MF130)] ; xmm1 = data6L pmaddwd xmm6, [GOTOFF(ebx, PW_F054_MF130)] ; xmm6 = data6H paddd xmm4, [GOTOFF(ebx, PD_DESCALE_P2)] paddd xmm2, [GOTOFF(ebx, PD_DESCALE_P2)] psrad xmm4, DESCALE_P2 psrad xmm2, DESCALE_P2 paddd xmm1, [GOTOFF(ebx, PD_DESCALE_P2)] paddd xmm6, [GOTOFF(ebx, PD_DESCALE_P2)] psrad xmm1, DESCALE_P2 psrad xmm6, DESCALE_P2 packssdw xmm4, xmm2 ; xmm4 = data2 packssdw xmm1, xmm6 ; xmm1 = data6 movdqa XMMWORD [XMMBLOCK(2, 0, edx, SIZEOF_DCTELEM)], xmm4 movdqa XMMWORD [XMMBLOCK(6, 0, edx, SIZEOF_DCTELEM)], xmm1 ; -- Odd part movdqa xmm7, XMMWORD [wk(0)] ; xmm7 = tmp6 movdqa xmm5, XMMWORD [wk(1)] ; xmm5 = tmp7 movdqa xmm2, xmm0 ; xmm0 = tmp4 movdqa xmm6, xmm3 ; xmm3 = tmp5 paddw xmm2, xmm7 ; xmm2 = z3 paddw xmm6, xmm5 ; xmm6 = z4 ; (Original) ; z5 = (z3 + z4) * 1.175875602; ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; ; z3 += z5; z4 += z5; ; ; (This implementation) ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); movdqa xmm4, xmm2 movdqa xmm1, xmm2 punpcklwd xmm4, xmm6 punpckhwd xmm1, xmm6 movdqa xmm2, xmm4 movdqa xmm6, xmm1 pmaddwd xmm4, [GOTOFF(ebx, PW_MF078_F117)] ; xmm4 = z3L pmaddwd xmm1, [GOTOFF(ebx, PW_MF078_F117)] ; xmm1 = z3H pmaddwd xmm2, [GOTOFF(ebx, PW_F117_F078)] ; xmm2 = z4L pmaddwd xmm6, [GOTOFF(ebx, PW_F117_F078)] ; xmm6 = z4H movdqa XMMWORD [wk(0)], xmm4 ; wk(0) = z3L movdqa XMMWORD [wk(1)], xmm1 ; wk(1) = z3H ; (Original) ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; ; ; (This implementation) ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); ; data7 = tmp4 + z3; data5 = tmp5 + z4; ; data3 = tmp6 + z3; data1 = tmp7 + z4; movdqa xmm4, xmm0 movdqa xmm1, xmm0 punpcklwd xmm4, xmm5 punpckhwd xmm1, xmm5 movdqa xmm0, xmm4 movdqa xmm5, xmm1 pmaddwd xmm4, [GOTOFF(ebx, PW_MF060_MF089)] ; xmm4 = tmp4L pmaddwd xmm1, [GOTOFF(ebx, PW_MF060_MF089)] ; xmm1 = tmp4H pmaddwd xmm0, [GOTOFF(ebx, PW_MF089_F060)] ; xmm0 = tmp7L pmaddwd xmm5, [GOTOFF(ebx, PW_MF089_F060)] ; xmm5 = tmp7H paddd xmm4, XMMWORD [wk(0)] ; xmm4 = data7L paddd xmm1, XMMWORD [wk(1)] ; xmm1 = data7H paddd xmm0, xmm2 ; xmm0 = data1L paddd xmm5, xmm6 ; xmm5 = data1H paddd xmm4, [GOTOFF(ebx, PD_DESCALE_P2)] paddd xmm1, [GOTOFF(ebx, PD_DESCALE_P2)] psrad xmm4, DESCALE_P2 psrad xmm1, DESCALE_P2 paddd xmm0, [GOTOFF(ebx, PD_DESCALE_P2)] paddd xmm5, [GOTOFF(ebx, PD_DESCALE_P2)] psrad xmm0, DESCALE_P2 psrad xmm5, DESCALE_P2 packssdw xmm4, xmm1 ; xmm4 = data7 packssdw xmm0, xmm5 ; xmm0 = data1 movdqa XMMWORD [XMMBLOCK(7, 0, edx, SIZEOF_DCTELEM)], xmm4 movdqa XMMWORD [XMMBLOCK(1, 0, edx, SIZEOF_DCTELEM)], xmm0 movdqa xmm1, xmm3 movdqa xmm5, xmm3 punpcklwd xmm1, xmm7 punpckhwd xmm5, xmm7 movdqa xmm3, xmm1 movdqa xmm7, xmm5 pmaddwd xmm1, [GOTOFF(ebx, PW_MF050_MF256)] ; xmm1 = tmp5L pmaddwd xmm5, [GOTOFF(ebx, PW_MF050_MF256)] ; xmm5 = tmp5H pmaddwd xmm3, [GOTOFF(ebx, PW_MF256_F050)] ; xmm3 = tmp6L pmaddwd xmm7, [GOTOFF(ebx, PW_MF256_F050)] ; xmm7 = tmp6H paddd xmm1, xmm2 ; xmm1 = data5L paddd xmm5, xmm6 ; xmm5 = data5H paddd xmm3, XMMWORD [wk(0)] ; xmm3 = data3L paddd xmm7, XMMWORD [wk(1)] ; xmm7 = data3H paddd xmm1, [GOTOFF(ebx, PD_DESCALE_P2)] paddd xmm5, [GOTOFF(ebx, PD_DESCALE_P2)] psrad xmm1, DESCALE_P2 psrad xmm5, DESCALE_P2 paddd xmm3, [GOTOFF(ebx, PD_DESCALE_P2)] paddd xmm7, [GOTOFF(ebx, PD_DESCALE_P2)] psrad xmm3, DESCALE_P2 psrad xmm7, DESCALE_P2 packssdw xmm1, xmm5 ; xmm1 = data5 packssdw xmm3, xmm7 ; xmm3 = data3 movdqa XMMWORD [XMMBLOCK(5, 0, edx, SIZEOF_DCTELEM)], xmm1 movdqa XMMWORD [XMMBLOCK(3, 0, edx, SIZEOF_DCTELEM)], xmm3 ; pop edi ; unused ; pop esi ; unused ; pop edx ; need not be preserved ; pop ecx ; unused POPPIC ebx mov esp, ebp ; esp <- aligned ebp pop esp ; esp <- original ebp pop ebp ret ; For some reason, the OS X linker does not honor the request to align the ; segment unless we do this. align 32