kc3-lang/libjpeg-turbo/simd/i386/jdsample-mmx.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/jdsample-mmx.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731
; ; Upsampling (32-bit MMX) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; Copyright (C) 2016, 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. %include "jsimdext.inc" ; -------------------------------------------------------------------------- SECTION SEG_CONST ALIGNZ 32 GLOBAL_DATA(jconst_fancy_upsample_mmx) EXTN(jconst_fancy_upsample_mmx): PW_ONE times 4 dw 1 PW_TWO times 4 dw 2 PW_THREE times 4 dw 3 PW_SEVEN times 4 dw 7 PW_EIGHT times 4 dw 8 ALIGNZ 32 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; Fancy processing for the common case of 2:1 horizontal and 1:1 vertical. ; ; The upsampling algorithm is linear interpolation between pixel centers, also ; known as a "triangle filter". This is a good compromise between speed and ; visual quality. The centers of the output pixels are 1/4 and 3/4 of the way ; between input pixel centers. ; ; GLOBAL(void) ; jsimd_h2v1_fancy_upsample_mmx(int max_v_samp_factor, ; JDIMENSION downsampled_width, ; JSAMPARRAY input_data, ; JSAMPARRAY *output_data_ptr) %define max_v_samp(b) (b) + 8 ; int max_v_samp_factor %define downsamp_width(b) (b) + 12 ; JDIMENSION downsampled_width %define input_data(b) (b) + 16 ; JSAMPARRAY input_data %define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr align 32 GLOBAL_FUNCTION(jsimd_h2v1_fancy_upsample_mmx) EXTN(jsimd_h2v1_fancy_upsample_mmx): push ebp mov ebp, esp PUSHPIC ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi GET_GOT ebx ; get GOT address mov eax, JDIMENSION [downsamp_width(ebp)] ; colctr test eax, eax jz near .return mov ecx, INT [max_v_samp(ebp)] ; rowctr test ecx, ecx jz near .return mov esi, JSAMPARRAY [input_data(ebp)] ; input_data mov edi, POINTER [output_data_ptr(ebp)] mov edi, JSAMPARRAY [edi] ; output_data ALIGNX 16, 7 .rowloop: push eax ; colctr push edi push esi mov esi, JSAMPROW [esi] ; inptr mov edi, JSAMPROW [edi] ; outptr test eax, SIZEOF_MMWORD - 1 jz short .skip mov dl, JSAMPLE [esi + (eax - 1) * SIZEOF_JSAMPLE] mov JSAMPLE [esi + eax * SIZEOF_JSAMPLE], dl ; insert a dummy sample .skip: pxor mm0, mm0 ; mm0 = (all 0's) pcmpeqb mm7, mm7 psrlq mm7, (SIZEOF_MMWORD - 1) * BYTE_BIT pand mm7, MMWORD [esi + 0 * SIZEOF_MMWORD] add eax, byte SIZEOF_MMWORD - 1 and eax, byte -SIZEOF_MMWORD cmp eax, byte SIZEOF_MMWORD ja short .columnloop ALIGNX 16, 7 .columnloop_last: pcmpeqb mm6, mm6 psllq mm6, (SIZEOF_MMWORD - 1) * BYTE_BIT pand mm6, MMWORD [esi + 0 * SIZEOF_MMWORD] jmp short .upsample ALIGNX 16, 7 .columnloop: movq mm6, MMWORD [esi + 1 * SIZEOF_MMWORD] psllq mm6, (SIZEOF_MMWORD - 1) * BYTE_BIT .upsample: movq mm1, MMWORD [esi + 0 * SIZEOF_MMWORD] movq mm2, mm1 movq mm3, mm1 ; mm1 = ( 0 1 2 3 4 5 6 7) psllq mm2, BYTE_BIT ; mm2 = ( - 0 1 2 3 4 5 6) psrlq mm3, BYTE_BIT ; mm3 = ( 1 2 3 4 5 6 7 -) por mm2, mm7 ; mm2 = (-1 0 1 2 3 4 5 6) por mm3, mm6 ; mm3 = ( 1 2 3 4 5 6 7 8) movq mm7, mm1 psrlq mm7, (SIZEOF_MMWORD - 1) * BYTE_BIT ; mm7 = ( 7 - - - - - - -) movq mm4, mm1 punpcklbw mm1, mm0 ; mm1 = ( 0 1 2 3) punpckhbw mm4, mm0 ; mm4 = ( 4 5 6 7) movq mm5, mm2 punpcklbw mm2, mm0 ; mm2 = (-1 0 1 2) punpckhbw mm5, mm0 ; mm5 = ( 3 4 5 6) movq mm6, mm3 punpcklbw mm3, mm0 ; mm3 = ( 1 2 3 4) punpckhbw mm6, mm0 ; mm6 = ( 5 6 7 8) pmullw mm1, [GOTOFF(ebx, PW_THREE)] pmullw mm4, [GOTOFF(ebx, PW_THREE)] paddw mm2, [GOTOFF(ebx, PW_ONE)] paddw mm5, [GOTOFF(ebx, PW_ONE)] paddw mm3, [GOTOFF(ebx, PW_TWO)] paddw mm6, [GOTOFF(ebx, PW_TWO)] paddw mm2, mm1 paddw mm5, mm4 psrlw mm2, 2 ; mm2 = OutLE = ( 0 2 4 6) psrlw mm5, 2 ; mm5 = OutHE = ( 8 10 12 14) paddw mm3, mm1 paddw mm6, mm4 psrlw mm3, 2 ; mm3 = OutLO = ( 1 3 5 7) psrlw mm6, 2 ; mm6 = OutHO = ( 9 11 13 15) psllw mm3, BYTE_BIT psllw mm6, BYTE_BIT por mm2, mm3 ; mm2 = OutL = ( 0 1 2 3 4 5 6 7) por mm5, mm6 ; mm5 = OutH = ( 8 9 10 11 12 13 14 15) movq MMWORD [edi + 0 * SIZEOF_MMWORD], mm2 movq MMWORD [edi + 1 * SIZEOF_MMWORD], mm5 sub eax, byte SIZEOF_MMWORD add esi, byte 1 * SIZEOF_MMWORD ; inptr add edi, byte 2 * SIZEOF_MMWORD ; outptr cmp eax, byte SIZEOF_MMWORD ja near .columnloop test eax, eax jnz near .columnloop_last pop esi pop edi pop eax add esi, byte SIZEOF_JSAMPROW ; input_data add edi, byte SIZEOF_JSAMPROW ; output_data dec ecx ; rowctr jg near .rowloop emms ; empty MMX state .return: pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved POPPIC ebx pop ebp ret ; -------------------------------------------------------------------------- ; ; Fancy processing for the common case of 2:1 horizontal and 2:1 vertical. ; Again a triangle filter; see comments for h2v1 case, above. ; ; GLOBAL(void) ; jsimd_h2v2_fancy_upsample_mmx(int max_v_samp_factor, ; JDIMENSION downsampled_width, ; JSAMPARRAY input_data, ; JSAMPARRAY *output_data_ptr) %define max_v_samp(b) (b) + 8 ; int max_v_samp_factor %define downsamp_width(b) (b) + 12 ; JDIMENSION downsampled_width %define input_data(b) (b) + 16 ; JSAMPARRAY input_data %define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr %define original_ebp ebp + 0 %define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_MMWORD ; mmword wk[WK_NUM] %define WK_NUM 4 %define gotptr wk(0) - SIZEOF_POINTER ; void *gotptr align 32 GLOBAL_FUNCTION(jsimd_h2v2_fancy_upsample_mmx) EXTN(jsimd_h2v2_fancy_upsample_mmx): push ebp mov eax, esp ; eax = original ebp sub esp, byte 4 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits mov [esp], eax mov ebp, esp ; ebp = aligned ebp lea esp, [wk(0)] PUSHPIC eax ; make a room for GOT address push ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi GET_GOT ebx ; get GOT address MOVPIC POINTER [gotptr], ebx ; save GOT address mov edx, eax ; edx = original ebp mov eax, JDIMENSION [downsamp_width(edx)] ; colctr test eax, eax jz near .return mov ecx, INT [max_v_samp(edx)] ; rowctr test ecx, ecx jz near .return mov esi, JSAMPARRAY [input_data(edx)] ; input_data mov edi, POINTER [output_data_ptr(edx)] mov edi, JSAMPARRAY [edi] ; output_data ALIGNX 16, 7 .rowloop: push eax ; colctr push ecx push edi push esi mov ecx, JSAMPROW [esi - 1 * SIZEOF_JSAMPROW] ; inptr1(above) mov ebx, JSAMPROW [esi + 0 * SIZEOF_JSAMPROW] ; inptr0 mov esi, JSAMPROW [esi + 1 * SIZEOF_JSAMPROW] ; inptr1(below) mov edx, JSAMPROW [edi + 0 * SIZEOF_JSAMPROW] ; outptr0 mov edi, JSAMPROW [edi + 1 * SIZEOF_JSAMPROW] ; outptr1 test eax, SIZEOF_MMWORD - 1 jz short .skip push edx mov dl, JSAMPLE [ecx + (eax - 1) * SIZEOF_JSAMPLE] mov JSAMPLE [ecx + eax * SIZEOF_JSAMPLE], dl mov dl, JSAMPLE [ebx + (eax - 1) * SIZEOF_JSAMPLE] mov JSAMPLE [ebx + eax * SIZEOF_JSAMPLE], dl mov dl, JSAMPLE [esi + (eax - 1) * SIZEOF_JSAMPLE] mov JSAMPLE [esi + eax * SIZEOF_JSAMPLE], dl ; insert a dummy sample pop edx .skip: ; -- process the first column block movq mm0, MMWORD [ebx + 0 * SIZEOF_MMWORD] ; mm0 = row[ 0][0] movq mm1, MMWORD [ecx + 0 * SIZEOF_MMWORD] ; mm1 = row[-1][0] movq mm2, MMWORD [esi + 0 * SIZEOF_MMWORD] ; mm2 = row[+1][0] PUSHPIC ebx MOVPIC ebx, POINTER [gotptr] ; load GOT address pxor mm3, mm3 ; mm3 = (all 0's) movq mm4, mm0 punpcklbw mm0, mm3 ; mm0 = row[ 0][0]( 0 1 2 3) punpckhbw mm4, mm3 ; mm4 = row[ 0][0]( 4 5 6 7) movq mm5, mm1 punpcklbw mm1, mm3 ; mm1 = row[-1][0]( 0 1 2 3) punpckhbw mm5, mm3 ; mm5 = row[-1][0]( 4 5 6 7) movq mm6, mm2 punpcklbw mm2, mm3 ; mm2 = row[+1][0]( 0 1 2 3) punpckhbw mm6, mm3 ; mm6 = row[+1][0]( 4 5 6 7) pmullw mm0, [GOTOFF(ebx, PW_THREE)] pmullw mm4, [GOTOFF(ebx, PW_THREE)] pcmpeqb mm7, mm7 psrlq mm7, (SIZEOF_MMWORD - 2) * BYTE_BIT paddw mm1, mm0 ; mm1 = Int0L = ( 0 1 2 3) paddw mm5, mm4 ; mm5 = Int0H = ( 4 5 6 7) paddw mm2, mm0 ; mm2 = Int1L = ( 0 1 2 3) paddw mm6, mm4 ; mm6 = Int1H = ( 4 5 6 7) ; temporarily save the intermediate data movq MMWORD [edx + 0 * SIZEOF_MMWORD], mm1 movq MMWORD [edx + 1 * SIZEOF_MMWORD], mm5 movq MMWORD [edi + 0 * SIZEOF_MMWORD], mm2 movq MMWORD [edi + 1 * SIZEOF_MMWORD], mm6 pand mm1, mm7 ; mm1 = ( 0 - - -) pand mm2, mm7 ; mm2 = ( 0 - - -) movq MMWORD [wk(0)], mm1 movq MMWORD [wk(1)], mm2 POPPIC ebx add eax, byte SIZEOF_MMWORD - 1 and eax, byte -SIZEOF_MMWORD cmp eax, byte SIZEOF_MMWORD ja short .columnloop ALIGNX 16, 7 .columnloop_last: ; -- process the last column block PUSHPIC ebx MOVPIC ebx, POINTER [gotptr] ; load GOT address pcmpeqb mm1, mm1 psllq mm1, (SIZEOF_MMWORD - 2) * BYTE_BIT movq mm2, mm1 pand mm1, MMWORD [edx + 1 * SIZEOF_MMWORD] ; mm1 = ( - - - 7) pand mm2, MMWORD [edi + 1 * SIZEOF_MMWORD] ; mm2 = ( - - - 7) movq MMWORD [wk(2)], mm1 movq MMWORD [wk(3)], mm2 jmp short .upsample ALIGNX 16, 7 .columnloop: ; -- process the next column block movq mm0, MMWORD [ebx + 1 * SIZEOF_MMWORD] ; mm0 = row[ 0][1] movq mm1, MMWORD [ecx + 1 * SIZEOF_MMWORD] ; mm1 = row[-1][1] movq mm2, MMWORD [esi + 1 * SIZEOF_MMWORD] ; mm2 = row[+1][1] PUSHPIC ebx MOVPIC ebx, POINTER [gotptr] ; load GOT address pxor mm3, mm3 ; mm3 = (all 0's) movq mm4, mm0 punpcklbw mm0, mm3 ; mm0 = row[ 0][1]( 0 1 2 3) punpckhbw mm4, mm3 ; mm4 = row[ 0][1]( 4 5 6 7) movq mm5, mm1 punpcklbw mm1, mm3 ; mm1 = row[-1][1]( 0 1 2 3) punpckhbw mm5, mm3 ; mm5 = row[-1][1]( 4 5 6 7) movq mm6, mm2 punpcklbw mm2, mm3 ; mm2 = row[+1][1]( 0 1 2 3) punpckhbw mm6, mm3 ; mm6 = row[+1][1]( 4 5 6 7) pmullw mm0, [GOTOFF(ebx, PW_THREE)] pmullw mm4, [GOTOFF(ebx, PW_THREE)] paddw mm1, mm0 ; mm1 = Int0L = ( 0 1 2 3) paddw mm5, mm4 ; mm5 = Int0H = ( 4 5 6 7) paddw mm2, mm0 ; mm2 = Int1L = ( 0 1 2 3) paddw mm6, mm4 ; mm6 = Int1H = ( 4 5 6 7) ; temporarily save the intermediate data movq MMWORD [edx + 2 * SIZEOF_MMWORD], mm1 movq MMWORD [edx + 3 * SIZEOF_MMWORD], mm5 movq MMWORD [edi + 2 * SIZEOF_MMWORD], mm2 movq MMWORD [edi + 3 * SIZEOF_MMWORD], mm6 psllq mm1, (SIZEOF_MMWORD - 2) * BYTE_BIT ; mm1 = ( - - - 0) psllq mm2, (SIZEOF_MMWORD - 2) * BYTE_BIT ; mm2 = ( - - - 0) movq MMWORD [wk(2)], mm1 movq MMWORD [wk(3)], mm2 .upsample: ; -- process the upper row movq mm7, MMWORD [edx + 0 * SIZEOF_MMWORD] ; mm7 = Int0L = ( 0 1 2 3) movq mm3, MMWORD [edx + 1 * SIZEOF_MMWORD] ; mm3 = Int0H = ( 4 5 6 7) movq mm0, mm7 movq mm4, mm3 psrlq mm0, 2 * BYTE_BIT ; mm0 = ( 1 2 3 -) psllq mm4, (SIZEOF_MMWORD - 2) * BYTE_BIT ; mm4 = ( - - - 4) movq mm5, mm7 movq mm6, mm3 psrlq mm5, (SIZEOF_MMWORD - 2) * BYTE_BIT ; mm5 = ( 3 - - -) psllq mm6, 2 * BYTE_BIT ; mm6 = ( - 4 5 6) por mm0, mm4 ; mm0 = ( 1 2 3 4) por mm5, mm6 ; mm5 = ( 3 4 5 6) movq mm1, mm7 movq mm2, mm3 psllq mm1, 2 * BYTE_BIT ; mm1 = ( - 0 1 2) psrlq mm2, 2 * BYTE_BIT ; mm2 = ( 5 6 7 -) movq mm4, mm3 psrlq mm4, (SIZEOF_MMWORD - 2) * BYTE_BIT ; mm4 = ( 7 - - -) por mm1, MMWORD [wk(0)] ; mm1 = (-1 0 1 2) por mm2, MMWORD [wk(2)] ; mm2 = ( 5 6 7 8) movq MMWORD [wk(0)], mm4 pmullw mm7, [GOTOFF(ebx, PW_THREE)] pmullw mm3, [GOTOFF(ebx, PW_THREE)] paddw mm1, [GOTOFF(ebx, PW_EIGHT)] paddw mm5, [GOTOFF(ebx, PW_EIGHT)] paddw mm0, [GOTOFF(ebx, PW_SEVEN)] paddw mm2, [GOTOFF(ebx, PW_SEVEN)] paddw mm1, mm7 paddw mm5, mm3 psrlw mm1, 4 ; mm1 = Out0LE = ( 0 2 4 6) psrlw mm5, 4 ; mm5 = Out0HE = ( 8 10 12 14) paddw mm0, mm7 paddw mm2, mm3 psrlw mm0, 4 ; mm0 = Out0LO = ( 1 3 5 7) psrlw mm2, 4 ; mm2 = Out0HO = ( 9 11 13 15) psllw mm0, BYTE_BIT psllw mm2, BYTE_BIT por mm1, mm0 ; mm1 = Out0L = ( 0 1 2 3 4 5 6 7) por mm5, mm2 ; mm5 = Out0H = ( 8 9 10 11 12 13 14 15) movq MMWORD [edx + 0 * SIZEOF_MMWORD], mm1 movq MMWORD [edx + 1 * SIZEOF_MMWORD], mm5 ; -- process the lower row movq mm6, MMWORD [edi + 0 * SIZEOF_MMWORD] ; mm6 = Int1L = ( 0 1 2 3) movq mm4, MMWORD [edi + 1 * SIZEOF_MMWORD] ; mm4 = Int1H = ( 4 5 6 7) movq mm7, mm6 movq mm3, mm4 psrlq mm7, 2 * BYTE_BIT ; mm7 = ( 1 2 3 -) psllq mm3, (SIZEOF_MMWORD - 2) * BYTE_BIT ; mm3 = ( - - - 4) movq mm0, mm6 movq mm2, mm4 psrlq mm0, (SIZEOF_MMWORD - 2) * BYTE_BIT ; mm0 = ( 3 - - -) psllq mm2, 2 * BYTE_BIT ; mm2 = ( - 4 5 6) por mm7, mm3 ; mm7 = ( 1 2 3 4) por mm0, mm2 ; mm0 = ( 3 4 5 6) movq mm1, mm6 movq mm5, mm4 psllq mm1, 2 * BYTE_BIT ; mm1 = ( - 0 1 2) psrlq mm5, 2 * BYTE_BIT ; mm5 = ( 5 6 7 -) movq mm3, mm4 psrlq mm3, (SIZEOF_MMWORD - 2) * BYTE_BIT ; mm3 = ( 7 - - -) por mm1, MMWORD [wk(1)] ; mm1 = (-1 0 1 2) por mm5, MMWORD [wk(3)] ; mm5 = ( 5 6 7 8) movq MMWORD [wk(1)], mm3 pmullw mm6, [GOTOFF(ebx, PW_THREE)] pmullw mm4, [GOTOFF(ebx, PW_THREE)] paddw mm1, [GOTOFF(ebx, PW_EIGHT)] paddw mm0, [GOTOFF(ebx, PW_EIGHT)] paddw mm7, [GOTOFF(ebx, PW_SEVEN)] paddw mm5, [GOTOFF(ebx, PW_SEVEN)] paddw mm1, mm6 paddw mm0, mm4 psrlw mm1, 4 ; mm1 = Out1LE = ( 0 2 4 6) psrlw mm0, 4 ; mm0 = Out1HE = ( 8 10 12 14) paddw mm7, mm6 paddw mm5, mm4 psrlw mm7, 4 ; mm7 = Out1LO = ( 1 3 5 7) psrlw mm5, 4 ; mm5 = Out1HO = ( 9 11 13 15) psllw mm7, BYTE_BIT psllw mm5, BYTE_BIT por mm1, mm7 ; mm1 = Out1L = ( 0 1 2 3 4 5 6 7) por mm0, mm5 ; mm0 = Out1H = ( 8 9 10 11 12 13 14 15) movq MMWORD [edi + 0 * SIZEOF_MMWORD], mm1 movq MMWORD [edi + 1 * SIZEOF_MMWORD], mm0 POPPIC ebx sub eax, byte SIZEOF_MMWORD add ecx, byte 1 * SIZEOF_MMWORD ; inptr1(above) add ebx, byte 1 * SIZEOF_MMWORD ; inptr0 add esi, byte 1 * SIZEOF_MMWORD ; inptr1(below) add edx, byte 2 * SIZEOF_MMWORD ; outptr0 add edi, byte 2 * SIZEOF_MMWORD ; outptr1 cmp eax, byte SIZEOF_MMWORD ja near .columnloop test eax, eax jnz near .columnloop_last pop esi pop edi pop ecx pop eax add esi, byte 1 * SIZEOF_JSAMPROW ; input_data add edi, byte 2 * SIZEOF_JSAMPROW ; output_data sub ecx, byte 2 ; rowctr jg near .rowloop emms ; empty MMX state .return: pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved pop ebx mov esp, ebp ; esp <- aligned ebp pop esp ; esp <- original ebp pop ebp ret ; -------------------------------------------------------------------------- ; ; Fast processing for the common case of 2:1 horizontal and 1:1 vertical. ; It's still a box filter. ; ; GLOBAL(void) ; jsimd_h2v1_upsample_mmx(int max_v_samp_factor, JDIMENSION output_width, ; JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) %define max_v_samp(b) (b) + 8 ; int max_v_samp_factor %define output_width(b) (b) + 12 ; JDIMENSION output_width %define input_data(b) (b) + 16 ; JSAMPARRAY input_data %define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr align 32 GLOBAL_FUNCTION(jsimd_h2v1_upsample_mmx) EXTN(jsimd_h2v1_upsample_mmx): push ebp mov ebp, esp ; push ebx ; unused ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi mov edx, JDIMENSION [output_width(ebp)] add edx, byte (2 * SIZEOF_MMWORD) - 1 and edx, byte -(2 * SIZEOF_MMWORD) jz short .return mov ecx, INT [max_v_samp(ebp)] ; rowctr test ecx, ecx jz short .return mov esi, JSAMPARRAY [input_data(ebp)] ; input_data mov edi, POINTER [output_data_ptr(ebp)] mov edi, JSAMPARRAY [edi] ; output_data ALIGNX 16, 7 .rowloop: push edi push esi mov esi, JSAMPROW [esi] ; inptr mov edi, JSAMPROW [edi] ; outptr mov eax, edx ; colctr ALIGNX 16, 7 .columnloop: movq mm0, MMWORD [esi + 0 * SIZEOF_MMWORD] movq mm1, mm0 punpcklbw mm0, mm0 punpckhbw mm1, mm1 movq MMWORD [edi + 0 * SIZEOF_MMWORD], mm0 movq MMWORD [edi + 1 * SIZEOF_MMWORD], mm1 sub eax, byte 2 * SIZEOF_MMWORD jz short .nextrow movq mm2, MMWORD [esi + 1 * SIZEOF_MMWORD] movq mm3, mm2 punpcklbw mm2, mm2 punpckhbw mm3, mm3 movq MMWORD [edi + 2 * SIZEOF_MMWORD], mm2 movq MMWORD [edi + 3 * SIZEOF_MMWORD], mm3 sub eax, byte 2 * SIZEOF_MMWORD jz short .nextrow add esi, byte 2 * SIZEOF_MMWORD ; inptr add edi, byte 4 * SIZEOF_MMWORD ; outptr jmp short .columnloop ALIGNX 16, 7 .nextrow: pop esi pop edi add esi, byte SIZEOF_JSAMPROW ; input_data add edi, byte SIZEOF_JSAMPROW ; output_data dec ecx ; rowctr jg short .rowloop emms ; empty MMX state .return: pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved ; pop ebx ; unused pop ebp ret ; -------------------------------------------------------------------------- ; ; Fast processing for the common case of 2:1 horizontal and 2:1 vertical. ; It's still a box filter. ; ; GLOBAL(void) ; jsimd_h2v2_upsample_mmx(int max_v_samp_factor, JDIMENSION output_width, ; JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) %define max_v_samp(b) (b) + 8 ; int max_v_samp_factor %define output_width(b) (b) + 12 ; JDIMENSION output_width %define input_data(b) (b) + 16 ; JSAMPARRAY input_data %define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr align 32 GLOBAL_FUNCTION(jsimd_h2v2_upsample_mmx) EXTN(jsimd_h2v2_upsample_mmx): push ebp mov ebp, esp push ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi mov edx, JDIMENSION [output_width(ebp)] add edx, byte (2 * SIZEOF_MMWORD) - 1 and edx, byte -(2 * SIZEOF_MMWORD) jz near .return mov ecx, INT [max_v_samp(ebp)] ; rowctr test ecx, ecx jz short .return mov esi, JSAMPARRAY [input_data(ebp)] ; input_data mov edi, POINTER [output_data_ptr(ebp)] mov edi, JSAMPARRAY [edi] ; output_data ALIGNX 16, 7 .rowloop: push edi push esi mov esi, JSAMPROW [esi] ; inptr mov ebx, JSAMPROW [edi + 0 * SIZEOF_JSAMPROW] ; outptr0 mov edi, JSAMPROW [edi + 1 * SIZEOF_JSAMPROW] ; outptr1 mov eax, edx ; colctr ALIGNX 16, 7 .columnloop: movq mm0, MMWORD [esi + 0 * SIZEOF_MMWORD] movq mm1, mm0 punpcklbw mm0, mm0 punpckhbw mm1, mm1 movq MMWORD [ebx + 0 * SIZEOF_MMWORD], mm0 movq MMWORD [ebx + 1 * SIZEOF_MMWORD], mm1 movq MMWORD [edi + 0 * SIZEOF_MMWORD], mm0 movq MMWORD [edi + 1 * SIZEOF_MMWORD], mm1 sub eax, byte 2 * SIZEOF_MMWORD jz short .nextrow movq mm2, MMWORD [esi + 1 * SIZEOF_MMWORD] movq mm3, mm2 punpcklbw mm2, mm2 punpckhbw mm3, mm3 movq MMWORD [ebx + 2 * SIZEOF_MMWORD], mm2 movq MMWORD [ebx + 3 * SIZEOF_MMWORD], mm3 movq MMWORD [edi + 2 * SIZEOF_MMWORD], mm2 movq MMWORD [edi + 3 * SIZEOF_MMWORD], mm3 sub eax, byte 2 * SIZEOF_MMWORD jz short .nextrow add esi, byte 2 * SIZEOF_MMWORD ; inptr add ebx, byte 4 * SIZEOF_MMWORD ; outptr0 add edi, byte 4 * SIZEOF_MMWORD ; outptr1 jmp short .columnloop ALIGNX 16, 7 .nextrow: pop esi pop edi add esi, byte 1 * SIZEOF_JSAMPROW ; input_data add edi, byte 2 * SIZEOF_JSAMPROW ; output_data sub ecx, byte 2 ; rowctr jg short .rowloop emms ; empty MMX state .return: pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved pop ebx 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