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| 1 ; |
| 2 ; jidctint.asm - accurate integer IDCT (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 slow-but-accurate integer implementation of the |
| 18 ; inverse DCT (Discrete Cosine Transform). The following code is based |
| 19 ; directly on the IJG's original jidctint.c; see the jidctint.c for |
| 20 ; more details. |
| 21 ; |
| 22 ; [TAB8] |
| 23 |
| 24 %include "jsimdext.inc" |
| 25 %include "jdct.inc" |
| 26 |
| 27 ; -------------------------------------------------------------------------- |
| 28 |
| 29 %define CONST_BITS 13 |
| 30 %define PASS1_BITS 2 |
| 31 |
| 32 %define DESCALE_P1 (CONST_BITS-PASS1_BITS) |
| 33 %define DESCALE_P2 (CONST_BITS+PASS1_BITS+3) |
| 34 |
| 35 %if CONST_BITS == 13 |
| 36 F_0_298 equ 2446 ; FIX(0.298631336) |
| 37 F_0_390 equ 3196 ; FIX(0.390180644) |
| 38 F_0_541 equ 4433 ; FIX(0.541196100) |
| 39 F_0_765 equ 6270 ; FIX(0.765366865) |
| 40 F_0_899 equ 7373 ; FIX(0.899976223) |
| 41 F_1_175 equ 9633 ; FIX(1.175875602) |
| 42 F_1_501 equ 12299 ; FIX(1.501321110) |
| 43 F_1_847 equ 15137 ; FIX(1.847759065) |
| 44 F_1_961 equ 16069 ; FIX(1.961570560) |
| 45 F_2_053 equ 16819 ; FIX(2.053119869) |
| 46 F_2_562 equ 20995 ; FIX(2.562915447) |
| 47 F_3_072 equ 25172 ; FIX(3.072711026) |
| 48 %else |
| 49 ; NASM cannot do compile-time arithmetic on floating-point constants. |
| 50 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) |
| 51 F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336) |
| 52 F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644) |
| 53 F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100) |
| 54 F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865) |
| 55 F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223) |
| 56 F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602) |
| 57 F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110) |
| 58 F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065) |
| 59 F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560) |
| 60 F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869) |
| 61 F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447) |
| 62 F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026) |
| 63 %endif |
| 64 |
| 65 ; -------------------------------------------------------------------------- |
| 66 SECTION SEG_CONST |
| 67 |
| 68 alignz 16 |
| 69 global EXTN(jconst_idct_islow_mmx) |
| 70 |
| 71 EXTN(jconst_idct_islow_mmx): |
| 72 |
| 73 PW_F130_F054 times 2 dw (F_0_541+F_0_765), F_0_541 |
| 74 PW_F054_MF130 times 2 dw F_0_541, (F_0_541-F_1_847) |
| 75 PW_MF078_F117 times 2 dw (F_1_175-F_1_961), F_1_175 |
| 76 PW_F117_F078 times 2 dw F_1_175, (F_1_175-F_0_390) |
| 77 PW_MF060_MF089 times 2 dw (F_0_298-F_0_899),-F_0_899 |
| 78 PW_MF089_F060 times 2 dw -F_0_899, (F_1_501-F_0_899) |
| 79 PW_MF050_MF256 times 2 dw (F_2_053-F_2_562),-F_2_562 |
| 80 PW_MF256_F050 times 2 dw -F_2_562, (F_3_072-F_2_562) |
| 81 PD_DESCALE_P1 times 2 dd 1 << (DESCALE_P1-1) |
| 82 PD_DESCALE_P2 times 2 dd 1 << (DESCALE_P2-1) |
| 83 PB_CENTERJSAMP times 8 db CENTERJSAMPLE |
| 84 |
| 85 alignz 16 |
| 86 |
| 87 ; -------------------------------------------------------------------------- |
| 88 SECTION SEG_TEXT |
| 89 BITS 32 |
| 90 ; |
| 91 ; Perform dequantization and inverse DCT on one block of coefficients. |
| 92 ; |
| 93 ; GLOBAL(void) |
| 94 ; jsimd_idct_islow_mmx (void *dct_table, JCOEFPTR coef_block, |
| 95 ; JSAMPARRAY output_buf, JDIMENSION output_col) |
| 96 ; |
| 97 |
| 98 %define dct_table(b) (b)+8 ; jpeg_component_info *compptr |
| 99 %define coef_block(b) (b)+12 ; JCOEFPTR coef_block |
| 100 %define output_buf(b) (b)+16 ; JSAMPARRAY output_buf |
| 101 %define output_col(b) (b)+20 ; JDIMENSION output_col |
| 102 |
| 103 %define original_ebp ebp+0 |
| 104 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] |
| 105 %define WK_NUM 12 |
| 106 %define workspace wk(0)-DCTSIZE2*SIZEOF_JCOEF |
| 107 ; JCOEF workspace[DCTSIZE2] |
| 108 |
| 109 align 16 |
| 110 global EXTN(jsimd_idct_islow_mmx) |
| 111 |
| 112 EXTN(jsimd_idct_islow_mmx): |
| 113 push ebp |
| 114 mov eax,esp ; eax = original ebp |
| 115 sub esp, byte 4 |
| 116 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits |
| 117 mov [esp],eax |
| 118 mov ebp,esp ; ebp = aligned ebp |
| 119 lea esp, [workspace] |
| 120 push ebx |
| 121 ; push ecx ; need not be preserved |
| 122 ; push edx ; need not be preserved |
| 123 push esi |
| 124 push edi |
| 125 |
| 126 get_GOT ebx ; get GOT address |
| 127 |
| 128 ; ---- Pass 1: process columns from input, store into work array. |
| 129 |
| 130 ; mov eax, [original_ebp] |
| 131 mov edx, POINTER [dct_table(eax)] ; quantptr |
| 132 mov esi, JCOEFPTR [coef_block(eax)] ; inptr |
| 133 lea edi, [workspace] ; JCOEF *wsptr |
| 134 mov ecx, DCTSIZE/4 ; ctr |
| 135 alignx 16,7 |
| 136 .columnloop: |
| 137 %ifndef NO_ZERO_COLUMN_TEST_ISLOW_MMX |
| 138 mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 139 or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 140 jnz short .columnDCT |
| 141 |
| 142 movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 143 movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 144 por mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| 145 por mm1, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)] |
| 146 por mm0, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| 147 por mm1, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] |
| 148 por mm0, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| 149 por mm1,mm0 |
| 150 packsswb mm1,mm1 |
| 151 movd eax,mm1 |
| 152 test eax,eax |
| 153 jnz short .columnDCT |
| 154 |
| 155 ; -- AC terms all zero |
| 156 |
| 157 movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] |
| 158 pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 159 |
| 160 psllw mm0,PASS1_BITS |
| 161 |
| 162 movq mm2,mm0 ; mm0=in0=(00 01 02 03) |
| 163 punpcklwd mm0,mm0 ; mm0=(00 00 01 01) |
| 164 punpckhwd mm2,mm2 ; mm2=(02 02 03 03) |
| 165 |
| 166 movq mm1,mm0 |
| 167 punpckldq mm0,mm0 ; mm0=(00 00 00 00) |
| 168 punpckhdq mm1,mm1 ; mm1=(01 01 01 01) |
| 169 movq mm3,mm2 |
| 170 punpckldq mm2,mm2 ; mm2=(02 02 02 02) |
| 171 punpckhdq mm3,mm3 ; mm3=(03 03 03 03) |
| 172 |
| 173 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0 |
| 174 movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0 |
| 175 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1 |
| 176 movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm1 |
| 177 movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2 |
| 178 movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm2 |
| 179 movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm3 |
| 180 movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm3 |
| 181 jmp near .nextcolumn |
| 182 alignx 16,7 |
| 183 %endif |
| 184 .columnDCT: |
| 185 |
| 186 ; -- Even part |
| 187 |
| 188 movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] |
| 189 movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 190 pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 191 pmullw mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 192 movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)] |
| 193 movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] |
| 194 pmullw mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 195 pmullw mm3, MMWORD [MMBLOCK(6,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 196 |
| 197 ; (Original) |
| 198 ; z1 = (z2 + z3) * 0.541196100; |
| 199 ; tmp2 = z1 + z3 * -1.847759065; |
| 200 ; tmp3 = z1 + z2 * 0.765366865; |
| 201 ; |
| 202 ; (This implementation) |
| 203 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065); |
| 204 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100; |
| 205 |
| 206 movq mm4,mm1 ; mm1=in2=z2 |
| 207 movq mm5,mm1 |
| 208 punpcklwd mm4,mm3 ; mm3=in6=z3 |
| 209 punpckhwd mm5,mm3 |
| 210 movq mm1,mm4 |
| 211 movq mm3,mm5 |
| 212 pmaddwd mm4,[GOTOFF(ebx,PW_F130_F054)] ; mm4=tmp3L |
| 213 pmaddwd mm5,[GOTOFF(ebx,PW_F130_F054)] ; mm5=tmp3H |
| 214 pmaddwd mm1,[GOTOFF(ebx,PW_F054_MF130)] ; mm1=tmp2L |
| 215 pmaddwd mm3,[GOTOFF(ebx,PW_F054_MF130)] ; mm3=tmp2H |
| 216 |
| 217 movq mm6,mm0 |
| 218 paddw mm0,mm2 ; mm0=in0+in4 |
| 219 psubw mm6,mm2 ; mm6=in0-in4 |
| 220 |
| 221 pxor mm7,mm7 |
| 222 pxor mm2,mm2 |
| 223 punpcklwd mm7,mm0 ; mm7=tmp0L |
| 224 punpckhwd mm2,mm0 ; mm2=tmp0H |
| 225 psrad mm7,(16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS |
| 226 psrad mm2,(16-CONST_BITS) ; psrad mm2,16 & pslld mm2,CONST_BITS |
| 227 |
| 228 movq mm0,mm7 |
| 229 paddd mm7,mm4 ; mm7=tmp10L |
| 230 psubd mm0,mm4 ; mm0=tmp13L |
| 231 movq mm4,mm2 |
| 232 paddd mm2,mm5 ; mm2=tmp10H |
| 233 psubd mm4,mm5 ; mm4=tmp13H |
| 234 |
| 235 movq MMWORD [wk(0)], mm7 ; wk(0)=tmp10L |
| 236 movq MMWORD [wk(1)], mm2 ; wk(1)=tmp10H |
| 237 movq MMWORD [wk(2)], mm0 ; wk(2)=tmp13L |
| 238 movq MMWORD [wk(3)], mm4 ; wk(3)=tmp13H |
| 239 |
| 240 pxor mm5,mm5 |
| 241 pxor mm7,mm7 |
| 242 punpcklwd mm5,mm6 ; mm5=tmp1L |
| 243 punpckhwd mm7,mm6 ; mm7=tmp1H |
| 244 psrad mm5,(16-CONST_BITS) ; psrad mm5,16 & pslld mm5,CONST_BITS |
| 245 psrad mm7,(16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS |
| 246 |
| 247 movq mm2,mm5 |
| 248 paddd mm5,mm1 ; mm5=tmp11L |
| 249 psubd mm2,mm1 ; mm2=tmp12L |
| 250 movq mm0,mm7 |
| 251 paddd mm7,mm3 ; mm7=tmp11H |
| 252 psubd mm0,mm3 ; mm0=tmp12H |
| 253 |
| 254 movq MMWORD [wk(4)], mm5 ; wk(4)=tmp11L |
| 255 movq MMWORD [wk(5)], mm7 ; wk(5)=tmp11H |
| 256 movq MMWORD [wk(6)], mm2 ; wk(6)=tmp12L |
| 257 movq MMWORD [wk(7)], mm0 ; wk(7)=tmp12H |
| 258 |
| 259 ; -- Odd part |
| 260 |
| 261 movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 262 movq mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| 263 pmullw mm4, MMWORD [MMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 264 pmullw mm6, MMWORD [MMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 265 movq mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| 266 movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| 267 pmullw mm1, MMWORD [MMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 268 pmullw mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| 269 |
| 270 movq mm5,mm6 |
| 271 movq mm7,mm4 |
| 272 paddw mm5,mm3 ; mm5=z3 |
| 273 paddw mm7,mm1 ; mm7=z4 |
| 274 |
| 275 ; (Original) |
| 276 ; z5 = (z3 + z4) * 1.175875602; |
| 277 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; |
| 278 ; z3 += z5; z4 += z5; |
| 279 ; |
| 280 ; (This implementation) |
| 281 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; |
| 282 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); |
| 283 |
| 284 movq mm2,mm5 |
| 285 movq mm0,mm5 |
| 286 punpcklwd mm2,mm7 |
| 287 punpckhwd mm0,mm7 |
| 288 movq mm5,mm2 |
| 289 movq mm7,mm0 |
| 290 pmaddwd mm2,[GOTOFF(ebx,PW_MF078_F117)] ; mm2=z3L |
| 291 pmaddwd mm0,[GOTOFF(ebx,PW_MF078_F117)] ; mm0=z3H |
| 292 pmaddwd mm5,[GOTOFF(ebx,PW_F117_F078)] ; mm5=z4L |
| 293 pmaddwd mm7,[GOTOFF(ebx,PW_F117_F078)] ; mm7=z4H |
| 294 |
| 295 movq MMWORD [wk(10)], mm2 ; wk(10)=z3L |
| 296 movq MMWORD [wk(11)], mm0 ; wk(11)=z3H |
| 297 |
| 298 ; (Original) |
| 299 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2; |
| 300 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869; |
| 301 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110; |
| 302 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; |
| 303 ; tmp0 += z1 + z3; tmp1 += z2 + z4; |
| 304 ; tmp2 += z2 + z3; tmp3 += z1 + z4; |
| 305 ; |
| 306 ; (This implementation) |
| 307 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223; |
| 308 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447; |
| 309 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447); |
| 310 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223); |
| 311 ; tmp0 += z3; tmp1 += z4; |
| 312 ; tmp2 += z3; tmp3 += z4; |
| 313 |
| 314 movq mm2,mm3 |
| 315 movq mm0,mm3 |
| 316 punpcklwd mm2,mm4 |
| 317 punpckhwd mm0,mm4 |
| 318 movq mm3,mm2 |
| 319 movq mm4,mm0 |
| 320 pmaddwd mm2,[GOTOFF(ebx,PW_MF060_MF089)] ; mm2=tmp0L |
| 321 pmaddwd mm0,[GOTOFF(ebx,PW_MF060_MF089)] ; mm0=tmp0H |
| 322 pmaddwd mm3,[GOTOFF(ebx,PW_MF089_F060)] ; mm3=tmp3L |
| 323 pmaddwd mm4,[GOTOFF(ebx,PW_MF089_F060)] ; mm4=tmp3H |
| 324 |
| 325 paddd mm2, MMWORD [wk(10)] ; mm2=tmp0L |
| 326 paddd mm0, MMWORD [wk(11)] ; mm0=tmp0H |
| 327 paddd mm3,mm5 ; mm3=tmp3L |
| 328 paddd mm4,mm7 ; mm4=tmp3H |
| 329 |
| 330 movq MMWORD [wk(8)], mm2 ; wk(8)=tmp0L |
| 331 movq MMWORD [wk(9)], mm0 ; wk(9)=tmp0H |
| 332 |
| 333 movq mm2,mm1 |
| 334 movq mm0,mm1 |
| 335 punpcklwd mm2,mm6 |
| 336 punpckhwd mm0,mm6 |
| 337 movq mm1,mm2 |
| 338 movq mm6,mm0 |
| 339 pmaddwd mm2,[GOTOFF(ebx,PW_MF050_MF256)] ; mm2=tmp1L |
| 340 pmaddwd mm0,[GOTOFF(ebx,PW_MF050_MF256)] ; mm0=tmp1H |
| 341 pmaddwd mm1,[GOTOFF(ebx,PW_MF256_F050)] ; mm1=tmp2L |
| 342 pmaddwd mm6,[GOTOFF(ebx,PW_MF256_F050)] ; mm6=tmp2H |
| 343 |
| 344 paddd mm2,mm5 ; mm2=tmp1L |
| 345 paddd mm0,mm7 ; mm0=tmp1H |
| 346 paddd mm1, MMWORD [wk(10)] ; mm1=tmp2L |
| 347 paddd mm6, MMWORD [wk(11)] ; mm6=tmp2H |
| 348 |
| 349 movq MMWORD [wk(10)], mm2 ; wk(10)=tmp1L |
| 350 movq MMWORD [wk(11)], mm0 ; wk(11)=tmp1H |
| 351 |
| 352 ; -- Final output stage |
| 353 |
| 354 movq mm5, MMWORD [wk(0)] ; mm5=tmp10L |
| 355 movq mm7, MMWORD [wk(1)] ; mm7=tmp10H |
| 356 |
| 357 movq mm2,mm5 |
| 358 movq mm0,mm7 |
| 359 paddd mm5,mm3 ; mm5=data0L |
| 360 paddd mm7,mm4 ; mm7=data0H |
| 361 psubd mm2,mm3 ; mm2=data7L |
| 362 psubd mm0,mm4 ; mm0=data7H |
| 363 |
| 364 movq mm3,[GOTOFF(ebx,PD_DESCALE_P1)] ; mm3=[PD_DESCALE_P1] |
| 365 |
| 366 paddd mm5,mm3 |
| 367 paddd mm7,mm3 |
| 368 psrad mm5,DESCALE_P1 |
| 369 psrad mm7,DESCALE_P1 |
| 370 paddd mm2,mm3 |
| 371 paddd mm0,mm3 |
| 372 psrad mm2,DESCALE_P1 |
| 373 psrad mm0,DESCALE_P1 |
| 374 |
| 375 packssdw mm5,mm7 ; mm5=data0=(00 01 02 03) |
| 376 packssdw mm2,mm0 ; mm2=data7=(70 71 72 73) |
| 377 |
| 378 movq mm4, MMWORD [wk(4)] ; mm4=tmp11L |
| 379 movq mm3, MMWORD [wk(5)] ; mm3=tmp11H |
| 380 |
| 381 movq mm7,mm4 |
| 382 movq mm0,mm3 |
| 383 paddd mm4,mm1 ; mm4=data1L |
| 384 paddd mm3,mm6 ; mm3=data1H |
| 385 psubd mm7,mm1 ; mm7=data6L |
| 386 psubd mm0,mm6 ; mm0=data6H |
| 387 |
| 388 movq mm1,[GOTOFF(ebx,PD_DESCALE_P1)] ; mm1=[PD_DESCALE_P1] |
| 389 |
| 390 paddd mm4,mm1 |
| 391 paddd mm3,mm1 |
| 392 psrad mm4,DESCALE_P1 |
| 393 psrad mm3,DESCALE_P1 |
| 394 paddd mm7,mm1 |
| 395 paddd mm0,mm1 |
| 396 psrad mm7,DESCALE_P1 |
| 397 psrad mm0,DESCALE_P1 |
| 398 |
| 399 packssdw mm4,mm3 ; mm4=data1=(10 11 12 13) |
| 400 packssdw mm7,mm0 ; mm7=data6=(60 61 62 63) |
| 401 |
| 402 movq mm6,mm5 ; transpose coefficients(phase 1) |
| 403 punpcklwd mm5,mm4 ; mm5=(00 10 01 11) |
| 404 punpckhwd mm6,mm4 ; mm6=(02 12 03 13) |
| 405 movq mm1,mm7 ; transpose coefficients(phase 1) |
| 406 punpcklwd mm7,mm2 ; mm7=(60 70 61 71) |
| 407 punpckhwd mm1,mm2 ; mm1=(62 72 63 73) |
| 408 |
| 409 movq mm3, MMWORD [wk(6)] ; mm3=tmp12L |
| 410 movq mm0, MMWORD [wk(7)] ; mm0=tmp12H |
| 411 movq mm4, MMWORD [wk(10)] ; mm4=tmp1L |
| 412 movq mm2, MMWORD [wk(11)] ; mm2=tmp1H |
| 413 |
| 414 movq MMWORD [wk(0)], mm5 ; wk(0)=(00 10 01 11) |
| 415 movq MMWORD [wk(1)], mm6 ; wk(1)=(02 12 03 13) |
| 416 movq MMWORD [wk(4)], mm7 ; wk(4)=(60 70 61 71) |
| 417 movq MMWORD [wk(5)], mm1 ; wk(5)=(62 72 63 73) |
| 418 |
| 419 movq mm5,mm3 |
| 420 movq mm6,mm0 |
| 421 paddd mm3,mm4 ; mm3=data2L |
| 422 paddd mm0,mm2 ; mm0=data2H |
| 423 psubd mm5,mm4 ; mm5=data5L |
| 424 psubd mm6,mm2 ; mm6=data5H |
| 425 |
| 426 movq mm7,[GOTOFF(ebx,PD_DESCALE_P1)] ; mm7=[PD_DESCALE_P1] |
| 427 |
| 428 paddd mm3,mm7 |
| 429 paddd mm0,mm7 |
| 430 psrad mm3,DESCALE_P1 |
| 431 psrad mm0,DESCALE_P1 |
| 432 paddd mm5,mm7 |
| 433 paddd mm6,mm7 |
| 434 psrad mm5,DESCALE_P1 |
| 435 psrad mm6,DESCALE_P1 |
| 436 |
| 437 packssdw mm3,mm0 ; mm3=data2=(20 21 22 23) |
| 438 packssdw mm5,mm6 ; mm5=data5=(50 51 52 53) |
| 439 |
| 440 movq mm1, MMWORD [wk(2)] ; mm1=tmp13L |
| 441 movq mm4, MMWORD [wk(3)] ; mm4=tmp13H |
| 442 movq mm2, MMWORD [wk(8)] ; mm2=tmp0L |
| 443 movq mm7, MMWORD [wk(9)] ; mm7=tmp0H |
| 444 |
| 445 movq mm0,mm1 |
| 446 movq mm6,mm4 |
| 447 paddd mm1,mm2 ; mm1=data3L |
| 448 paddd mm4,mm7 ; mm4=data3H |
| 449 psubd mm0,mm2 ; mm0=data4L |
| 450 psubd mm6,mm7 ; mm6=data4H |
| 451 |
| 452 movq mm2,[GOTOFF(ebx,PD_DESCALE_P1)] ; mm2=[PD_DESCALE_P1] |
| 453 |
| 454 paddd mm1,mm2 |
| 455 paddd mm4,mm2 |
| 456 psrad mm1,DESCALE_P1 |
| 457 psrad mm4,DESCALE_P1 |
| 458 paddd mm0,mm2 |
| 459 paddd mm6,mm2 |
| 460 psrad mm0,DESCALE_P1 |
| 461 psrad mm6,DESCALE_P1 |
| 462 |
| 463 packssdw mm1,mm4 ; mm1=data3=(30 31 32 33) |
| 464 packssdw mm0,mm6 ; mm0=data4=(40 41 42 43) |
| 465 |
| 466 movq mm7, MMWORD [wk(0)] ; mm7=(00 10 01 11) |
| 467 movq mm2, MMWORD [wk(1)] ; mm2=(02 12 03 13) |
| 468 |
| 469 movq mm4,mm3 ; transpose coefficients(phase 1) |
| 470 punpcklwd mm3,mm1 ; mm3=(20 30 21 31) |
| 471 punpckhwd mm4,mm1 ; mm4=(22 32 23 33) |
| 472 movq mm6,mm0 ; transpose coefficients(phase 1) |
| 473 punpcklwd mm0,mm5 ; mm0=(40 50 41 51) |
| 474 punpckhwd mm6,mm5 ; mm6=(42 52 43 53) |
| 475 |
| 476 movq mm1,mm7 ; transpose coefficients(phase 2) |
| 477 punpckldq mm7,mm3 ; mm7=(00 10 20 30) |
| 478 punpckhdq mm1,mm3 ; mm1=(01 11 21 31) |
| 479 movq mm5,mm2 ; transpose coefficients(phase 2) |
| 480 punpckldq mm2,mm4 ; mm2=(02 12 22 32) |
| 481 punpckhdq mm5,mm4 ; mm5=(03 13 23 33) |
| 482 |
| 483 movq mm3, MMWORD [wk(4)] ; mm3=(60 70 61 71) |
| 484 movq mm4, MMWORD [wk(5)] ; mm4=(62 72 63 73) |
| 485 |
| 486 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm7 |
| 487 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1 |
| 488 movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2 |
| 489 movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm5 |
| 490 |
| 491 movq mm7,mm0 ; transpose coefficients(phase 2) |
| 492 punpckldq mm0,mm3 ; mm0=(40 50 60 70) |
| 493 punpckhdq mm7,mm3 ; mm7=(41 51 61 71) |
| 494 movq mm1,mm6 ; transpose coefficients(phase 2) |
| 495 punpckldq mm6,mm4 ; mm6=(42 52 62 72) |
| 496 punpckhdq mm1,mm4 ; mm1=(43 53 63 73) |
| 497 |
| 498 movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0 |
| 499 movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm7 |
| 500 movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm6 |
| 501 movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm1 |
| 502 |
| 503 .nextcolumn: |
| 504 add esi, byte 4*SIZEOF_JCOEF ; coef_block |
| 505 add edx, byte 4*SIZEOF_ISLOW_MULT_TYPE ; quantptr |
| 506 add edi, byte 4*DCTSIZE*SIZEOF_JCOEF ; wsptr |
| 507 dec ecx ; ctr |
| 508 jnz near .columnloop |
| 509 |
| 510 ; ---- Pass 2: process rows from work array, store into output array. |
| 511 |
| 512 mov eax, [original_ebp] |
| 513 lea esi, [workspace] ; JCOEF *wsptr |
| 514 mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *) |
| 515 mov eax, JDIMENSION [output_col(eax)] |
| 516 mov ecx, DCTSIZE/4 ; ctr |
| 517 alignx 16,7 |
| 518 .rowloop: |
| 519 |
| 520 ; -- Even part |
| 521 |
| 522 movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] |
| 523 movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| 524 movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)] |
| 525 movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] |
| 526 |
| 527 ; (Original) |
| 528 ; z1 = (z2 + z3) * 0.541196100; |
| 529 ; tmp2 = z1 + z3 * -1.847759065; |
| 530 ; tmp3 = z1 + z2 * 0.765366865; |
| 531 ; |
| 532 ; (This implementation) |
| 533 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065); |
| 534 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100; |
| 535 |
| 536 movq mm4,mm1 ; mm1=in2=z2 |
| 537 movq mm5,mm1 |
| 538 punpcklwd mm4,mm3 ; mm3=in6=z3 |
| 539 punpckhwd mm5,mm3 |
| 540 movq mm1,mm4 |
| 541 movq mm3,mm5 |
| 542 pmaddwd mm4,[GOTOFF(ebx,PW_F130_F054)] ; mm4=tmp3L |
| 543 pmaddwd mm5,[GOTOFF(ebx,PW_F130_F054)] ; mm5=tmp3H |
| 544 pmaddwd mm1,[GOTOFF(ebx,PW_F054_MF130)] ; mm1=tmp2L |
| 545 pmaddwd mm3,[GOTOFF(ebx,PW_F054_MF130)] ; mm3=tmp2H |
| 546 |
| 547 movq mm6,mm0 |
| 548 paddw mm0,mm2 ; mm0=in0+in4 |
| 549 psubw mm6,mm2 ; mm6=in0-in4 |
| 550 |
| 551 pxor mm7,mm7 |
| 552 pxor mm2,mm2 |
| 553 punpcklwd mm7,mm0 ; mm7=tmp0L |
| 554 punpckhwd mm2,mm0 ; mm2=tmp0H |
| 555 psrad mm7,(16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS |
| 556 psrad mm2,(16-CONST_BITS) ; psrad mm2,16 & pslld mm2,CONST_BITS |
| 557 |
| 558 movq mm0,mm7 |
| 559 paddd mm7,mm4 ; mm7=tmp10L |
| 560 psubd mm0,mm4 ; mm0=tmp13L |
| 561 movq mm4,mm2 |
| 562 paddd mm2,mm5 ; mm2=tmp10H |
| 563 psubd mm4,mm5 ; mm4=tmp13H |
| 564 |
| 565 movq MMWORD [wk(0)], mm7 ; wk(0)=tmp10L |
| 566 movq MMWORD [wk(1)], mm2 ; wk(1)=tmp10H |
| 567 movq MMWORD [wk(2)], mm0 ; wk(2)=tmp13L |
| 568 movq MMWORD [wk(3)], mm4 ; wk(3)=tmp13H |
| 569 |
| 570 pxor mm5,mm5 |
| 571 pxor mm7,mm7 |
| 572 punpcklwd mm5,mm6 ; mm5=tmp1L |
| 573 punpckhwd mm7,mm6 ; mm7=tmp1H |
| 574 psrad mm5,(16-CONST_BITS) ; psrad mm5,16 & pslld mm5,CONST_BITS |
| 575 psrad mm7,(16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS |
| 576 |
| 577 movq mm2,mm5 |
| 578 paddd mm5,mm1 ; mm5=tmp11L |
| 579 psubd mm2,mm1 ; mm2=tmp12L |
| 580 movq mm0,mm7 |
| 581 paddd mm7,mm3 ; mm7=tmp11H |
| 582 psubd mm0,mm3 ; mm0=tmp12H |
| 583 |
| 584 movq MMWORD [wk(4)], mm5 ; wk(4)=tmp11L |
| 585 movq MMWORD [wk(5)], mm7 ; wk(5)=tmp11H |
| 586 movq MMWORD [wk(6)], mm2 ; wk(6)=tmp12L |
| 587 movq MMWORD [wk(7)], mm0 ; wk(7)=tmp12H |
| 588 |
| 589 ; -- Odd part |
| 590 |
| 591 movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| 592 movq mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| 593 movq mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| 594 movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| 595 |
| 596 movq mm5,mm6 |
| 597 movq mm7,mm4 |
| 598 paddw mm5,mm3 ; mm5=z3 |
| 599 paddw mm7,mm1 ; mm7=z4 |
| 600 |
| 601 ; (Original) |
| 602 ; z5 = (z3 + z4) * 1.175875602; |
| 603 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; |
| 604 ; z3 += z5; z4 += z5; |
| 605 ; |
| 606 ; (This implementation) |
| 607 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; |
| 608 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); |
| 609 |
| 610 movq mm2,mm5 |
| 611 movq mm0,mm5 |
| 612 punpcklwd mm2,mm7 |
| 613 punpckhwd mm0,mm7 |
| 614 movq mm5,mm2 |
| 615 movq mm7,mm0 |
| 616 pmaddwd mm2,[GOTOFF(ebx,PW_MF078_F117)] ; mm2=z3L |
| 617 pmaddwd mm0,[GOTOFF(ebx,PW_MF078_F117)] ; mm0=z3H |
| 618 pmaddwd mm5,[GOTOFF(ebx,PW_F117_F078)] ; mm5=z4L |
| 619 pmaddwd mm7,[GOTOFF(ebx,PW_F117_F078)] ; mm7=z4H |
| 620 |
| 621 movq MMWORD [wk(10)], mm2 ; wk(10)=z3L |
| 622 movq MMWORD [wk(11)], mm0 ; wk(11)=z3H |
| 623 |
| 624 ; (Original) |
| 625 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2; |
| 626 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869; |
| 627 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110; |
| 628 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; |
| 629 ; tmp0 += z1 + z3; tmp1 += z2 + z4; |
| 630 ; tmp2 += z2 + z3; tmp3 += z1 + z4; |
| 631 ; |
| 632 ; (This implementation) |
| 633 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223; |
| 634 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447; |
| 635 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447); |
| 636 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223); |
| 637 ; tmp0 += z3; tmp1 += z4; |
| 638 ; tmp2 += z3; tmp3 += z4; |
| 639 |
| 640 movq mm2,mm3 |
| 641 movq mm0,mm3 |
| 642 punpcklwd mm2,mm4 |
| 643 punpckhwd mm0,mm4 |
| 644 movq mm3,mm2 |
| 645 movq mm4,mm0 |
| 646 pmaddwd mm2,[GOTOFF(ebx,PW_MF060_MF089)] ; mm2=tmp0L |
| 647 pmaddwd mm0,[GOTOFF(ebx,PW_MF060_MF089)] ; mm0=tmp0H |
| 648 pmaddwd mm3,[GOTOFF(ebx,PW_MF089_F060)] ; mm3=tmp3L |
| 649 pmaddwd mm4,[GOTOFF(ebx,PW_MF089_F060)] ; mm4=tmp3H |
| 650 |
| 651 paddd mm2, MMWORD [wk(10)] ; mm2=tmp0L |
| 652 paddd mm0, MMWORD [wk(11)] ; mm0=tmp0H |
| 653 paddd mm3,mm5 ; mm3=tmp3L |
| 654 paddd mm4,mm7 ; mm4=tmp3H |
| 655 |
| 656 movq MMWORD [wk(8)], mm2 ; wk(8)=tmp0L |
| 657 movq MMWORD [wk(9)], mm0 ; wk(9)=tmp0H |
| 658 |
| 659 movq mm2,mm1 |
| 660 movq mm0,mm1 |
| 661 punpcklwd mm2,mm6 |
| 662 punpckhwd mm0,mm6 |
| 663 movq mm1,mm2 |
| 664 movq mm6,mm0 |
| 665 pmaddwd mm2,[GOTOFF(ebx,PW_MF050_MF256)] ; mm2=tmp1L |
| 666 pmaddwd mm0,[GOTOFF(ebx,PW_MF050_MF256)] ; mm0=tmp1H |
| 667 pmaddwd mm1,[GOTOFF(ebx,PW_MF256_F050)] ; mm1=tmp2L |
| 668 pmaddwd mm6,[GOTOFF(ebx,PW_MF256_F050)] ; mm6=tmp2H |
| 669 |
| 670 paddd mm2,mm5 ; mm2=tmp1L |
| 671 paddd mm0,mm7 ; mm0=tmp1H |
| 672 paddd mm1, MMWORD [wk(10)] ; mm1=tmp2L |
| 673 paddd mm6, MMWORD [wk(11)] ; mm6=tmp2H |
| 674 |
| 675 movq MMWORD [wk(10)], mm2 ; wk(10)=tmp1L |
| 676 movq MMWORD [wk(11)], mm0 ; wk(11)=tmp1H |
| 677 |
| 678 ; -- Final output stage |
| 679 |
| 680 movq mm5, MMWORD [wk(0)] ; mm5=tmp10L |
| 681 movq mm7, MMWORD [wk(1)] ; mm7=tmp10H |
| 682 |
| 683 movq mm2,mm5 |
| 684 movq mm0,mm7 |
| 685 paddd mm5,mm3 ; mm5=data0L |
| 686 paddd mm7,mm4 ; mm7=data0H |
| 687 psubd mm2,mm3 ; mm2=data7L |
| 688 psubd mm0,mm4 ; mm0=data7H |
| 689 |
| 690 movq mm3,[GOTOFF(ebx,PD_DESCALE_P2)] ; mm3=[PD_DESCALE_P2] |
| 691 |
| 692 paddd mm5,mm3 |
| 693 paddd mm7,mm3 |
| 694 psrad mm5,DESCALE_P2 |
| 695 psrad mm7,DESCALE_P2 |
| 696 paddd mm2,mm3 |
| 697 paddd mm0,mm3 |
| 698 psrad mm2,DESCALE_P2 |
| 699 psrad mm0,DESCALE_P2 |
| 700 |
| 701 packssdw mm5,mm7 ; mm5=data0=(00 10 20 30) |
| 702 packssdw mm2,mm0 ; mm2=data7=(07 17 27 37) |
| 703 |
| 704 movq mm4, MMWORD [wk(4)] ; mm4=tmp11L |
| 705 movq mm3, MMWORD [wk(5)] ; mm3=tmp11H |
| 706 |
| 707 movq mm7,mm4 |
| 708 movq mm0,mm3 |
| 709 paddd mm4,mm1 ; mm4=data1L |
| 710 paddd mm3,mm6 ; mm3=data1H |
| 711 psubd mm7,mm1 ; mm7=data6L |
| 712 psubd mm0,mm6 ; mm0=data6H |
| 713 |
| 714 movq mm1,[GOTOFF(ebx,PD_DESCALE_P2)] ; mm1=[PD_DESCALE_P2] |
| 715 |
| 716 paddd mm4,mm1 |
| 717 paddd mm3,mm1 |
| 718 psrad mm4,DESCALE_P2 |
| 719 psrad mm3,DESCALE_P2 |
| 720 paddd mm7,mm1 |
| 721 paddd mm0,mm1 |
| 722 psrad mm7,DESCALE_P2 |
| 723 psrad mm0,DESCALE_P2 |
| 724 |
| 725 packssdw mm4,mm3 ; mm4=data1=(01 11 21 31) |
| 726 packssdw mm7,mm0 ; mm7=data6=(06 16 26 36) |
| 727 |
| 728 packsswb mm5,mm7 ; mm5=(00 10 20 30 06 16 26 36) |
| 729 packsswb mm4,mm2 ; mm4=(01 11 21 31 07 17 27 37) |
| 730 |
| 731 movq mm6, MMWORD [wk(6)] ; mm6=tmp12L |
| 732 movq mm1, MMWORD [wk(7)] ; mm1=tmp12H |
| 733 movq mm3, MMWORD [wk(10)] ; mm3=tmp1L |
| 734 movq mm0, MMWORD [wk(11)] ; mm0=tmp1H |
| 735 |
| 736 movq MMWORD [wk(0)], mm5 ; wk(0)=(00 10 20 30 06 16 26 36) |
| 737 movq MMWORD [wk(1)], mm4 ; wk(1)=(01 11 21 31 07 17 27 37) |
| 738 |
| 739 movq mm7,mm6 |
| 740 movq mm2,mm1 |
| 741 paddd mm6,mm3 ; mm6=data2L |
| 742 paddd mm1,mm0 ; mm1=data2H |
| 743 psubd mm7,mm3 ; mm7=data5L |
| 744 psubd mm2,mm0 ; mm2=data5H |
| 745 |
| 746 movq mm5,[GOTOFF(ebx,PD_DESCALE_P2)] ; mm5=[PD_DESCALE_P2] |
| 747 |
| 748 paddd mm6,mm5 |
| 749 paddd mm1,mm5 |
| 750 psrad mm6,DESCALE_P2 |
| 751 psrad mm1,DESCALE_P2 |
| 752 paddd mm7,mm5 |
| 753 paddd mm2,mm5 |
| 754 psrad mm7,DESCALE_P2 |
| 755 psrad mm2,DESCALE_P2 |
| 756 |
| 757 packssdw mm6,mm1 ; mm6=data2=(02 12 22 32) |
| 758 packssdw mm7,mm2 ; mm7=data5=(05 15 25 35) |
| 759 |
| 760 movq mm4, MMWORD [wk(2)] ; mm4=tmp13L |
| 761 movq mm3, MMWORD [wk(3)] ; mm3=tmp13H |
| 762 movq mm0, MMWORD [wk(8)] ; mm0=tmp0L |
| 763 movq mm5, MMWORD [wk(9)] ; mm5=tmp0H |
| 764 |
| 765 movq mm1,mm4 |
| 766 movq mm2,mm3 |
| 767 paddd mm4,mm0 ; mm4=data3L |
| 768 paddd mm3,mm5 ; mm3=data3H |
| 769 psubd mm1,mm0 ; mm1=data4L |
| 770 psubd mm2,mm5 ; mm2=data4H |
| 771 |
| 772 movq mm0,[GOTOFF(ebx,PD_DESCALE_P2)] ; mm0=[PD_DESCALE_P2] |
| 773 |
| 774 paddd mm4,mm0 |
| 775 paddd mm3,mm0 |
| 776 psrad mm4,DESCALE_P2 |
| 777 psrad mm3,DESCALE_P2 |
| 778 paddd mm1,mm0 |
| 779 paddd mm2,mm0 |
| 780 psrad mm1,DESCALE_P2 |
| 781 psrad mm2,DESCALE_P2 |
| 782 |
| 783 movq mm5,[GOTOFF(ebx,PB_CENTERJSAMP)] ; mm5=[PB_CENTERJSAMP] |
| 784 |
| 785 packssdw mm4,mm3 ; mm4=data3=(03 13 23 33) |
| 786 packssdw mm1,mm2 ; mm1=data4=(04 14 24 34) |
| 787 |
| 788 movq mm0, MMWORD [wk(0)] ; mm0=(00 10 20 30 06 16 26 36) |
| 789 movq mm3, MMWORD [wk(1)] ; mm3=(01 11 21 31 07 17 27 37) |
| 790 |
| 791 packsswb mm6,mm1 ; mm6=(02 12 22 32 04 14 24 34) |
| 792 packsswb mm4,mm7 ; mm4=(03 13 23 33 05 15 25 35) |
| 793 |
| 794 paddb mm0,mm5 |
| 795 paddb mm3,mm5 |
| 796 paddb mm6,mm5 |
| 797 paddb mm4,mm5 |
| 798 |
| 799 movq mm2,mm0 ; transpose coefficients(phase 1) |
| 800 punpcklbw mm0,mm3 ; mm0=(00 01 10 11 20 21 30 31) |
| 801 punpckhbw mm2,mm3 ; mm2=(06 07 16 17 26 27 36 37) |
| 802 movq mm1,mm6 ; transpose coefficients(phase 1) |
| 803 punpcklbw mm6,mm4 ; mm6=(02 03 12 13 22 23 32 33) |
| 804 punpckhbw mm1,mm4 ; mm1=(04 05 14 15 24 25 34 35) |
| 805 |
| 806 movq mm7,mm0 ; transpose coefficients(phase 2) |
| 807 punpcklwd mm0,mm6 ; mm0=(00 01 02 03 10 11 12 13) |
| 808 punpckhwd mm7,mm6 ; mm7=(20 21 22 23 30 31 32 33) |
| 809 movq mm5,mm1 ; transpose coefficients(phase 2) |
| 810 punpcklwd mm1,mm2 ; mm1=(04 05 06 07 14 15 16 17) |
| 811 punpckhwd mm5,mm2 ; mm5=(24 25 26 27 34 35 36 37) |
| 812 |
| 813 movq mm3,mm0 ; transpose coefficients(phase 3) |
| 814 punpckldq mm0,mm1 ; mm0=(00 01 02 03 04 05 06 07) |
| 815 punpckhdq mm3,mm1 ; mm3=(10 11 12 13 14 15 16 17) |
| 816 movq mm4,mm7 ; transpose coefficients(phase 3) |
| 817 punpckldq mm7,mm5 ; mm7=(20 21 22 23 24 25 26 27) |
| 818 punpckhdq mm4,mm5 ; mm4=(30 31 32 33 34 35 36 37) |
| 819 |
| 820 pushpic ebx ; save GOT address |
| 821 |
| 822 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] |
| 823 mov ebx, JSAMPROW [edi+1*SIZEOF_JSAMPROW] |
| 824 movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm0 |
| 825 movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm3 |
| 826 mov edx, JSAMPROW [edi+2*SIZEOF_JSAMPROW] |
| 827 mov ebx, JSAMPROW [edi+3*SIZEOF_JSAMPROW] |
| 828 movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm7 |
| 829 movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm4 |
| 830 |
| 831 poppic ebx ; restore GOT address |
| 832 |
| 833 add esi, byte 4*SIZEOF_JCOEF ; wsptr |
| 834 add edi, byte 4*SIZEOF_JSAMPROW |
| 835 dec ecx ; ctr |
| 836 jnz near .rowloop |
| 837 |
| 838 emms ; empty MMX state |
| 839 |
| 840 pop edi |
| 841 pop esi |
| 842 ; pop edx ; need not be preserved |
| 843 ; pop ecx ; need not be preserved |
| 844 pop ebx |
| 845 mov esp,ebp ; esp <- aligned ebp |
| 846 pop esp ; esp <- original ebp |
| 847 pop ebp |
| 848 ret |
| 849 |
| 850 ; For some reason, the OS X linker does not honor the request to align the |
| 851 ; segment unless we do this. |
| 852 align 16 |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1934113002:
Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/ (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master