jfdctint-sse2.asm (26845B)
1 ; 2 ; jfdctint.asm - accurate integer FDCT (SSE2) 3 ; 4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB 5 ; Copyright (C) 2016, 2020, 2024, D. R. Commander. 6 ; 7 ; Based on the 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) or Yasm. 12 ; 13 ; This file contains a slower but more accurate integer implementation of the 14 ; forward DCT (Discrete Cosine Transform). The following code is based 15 ; directly on the IJG's original jfdctint.c; see the jfdctint.c for 16 ; more details. 17 18 %include "jsimdext.inc" 19 %include "jdct.inc" 20 21 ; -------------------------------------------------------------------------- 22 23 %define CONST_BITS 13 24 %define PASS1_BITS 2 25 26 %define DESCALE_P1 (CONST_BITS - PASS1_BITS) 27 %define DESCALE_P2 (CONST_BITS + PASS1_BITS) 28 29 %if CONST_BITS == 13 30 F_0_298 equ 2446 ; FIX(0.298631336) 31 F_0_390 equ 3196 ; FIX(0.390180644) 32 F_0_541 equ 4433 ; FIX(0.541196100) 33 F_0_765 equ 6270 ; FIX(0.765366865) 34 F_0_899 equ 7373 ; FIX(0.899976223) 35 F_1_175 equ 9633 ; FIX(1.175875602) 36 F_1_501 equ 12299 ; FIX(1.501321110) 37 F_1_847 equ 15137 ; FIX(1.847759065) 38 F_1_961 equ 16069 ; FIX(1.961570560) 39 F_2_053 equ 16819 ; FIX(2.053119869) 40 F_2_562 equ 20995 ; FIX(2.562915447) 41 F_3_072 equ 25172 ; FIX(3.072711026) 42 %else 43 ; NASM cannot do compile-time arithmetic on floating-point constants. 44 %define DESCALE(x, n) (((x) + (1 << ((n) - 1))) >> (n)) 45 F_0_298 equ DESCALE( 320652955, 30 - CONST_BITS) ; FIX(0.298631336) 46 F_0_390 equ DESCALE( 418953276, 30 - CONST_BITS) ; FIX(0.390180644) 47 F_0_541 equ DESCALE( 581104887, 30 - CONST_BITS) ; FIX(0.541196100) 48 F_0_765 equ DESCALE( 821806413, 30 - CONST_BITS) ; FIX(0.765366865) 49 F_0_899 equ DESCALE( 966342111, 30 - CONST_BITS) ; FIX(0.899976223) 50 F_1_175 equ DESCALE(1262586813, 30 - CONST_BITS) ; FIX(1.175875602) 51 F_1_501 equ DESCALE(1612031267, 30 - CONST_BITS) ; FIX(1.501321110) 52 F_1_847 equ DESCALE(1984016188, 30 - CONST_BITS) ; FIX(1.847759065) 53 F_1_961 equ DESCALE(2106220350, 30 - CONST_BITS) ; FIX(1.961570560) 54 F_2_053 equ DESCALE(2204520673, 30 - CONST_BITS) ; FIX(2.053119869) 55 F_2_562 equ DESCALE(2751909506, 30 - CONST_BITS) ; FIX(2.562915447) 56 F_3_072 equ DESCALE(3299298341, 30 - CONST_BITS) ; FIX(3.072711026) 57 %endif 58 59 ; -------------------------------------------------------------------------- 60 SECTION SEG_CONST 61 62 ALIGNZ 32 63 GLOBAL_DATA(jconst_fdct_islow_sse2) 64 65 EXTN(jconst_fdct_islow_sse2): 66 67 PW_F130_F054 times 4 dw (F_0_541 + F_0_765), F_0_541 68 PW_F054_MF130 times 4 dw F_0_541, (F_0_541 - F_1_847) 69 PW_MF078_F117 times 4 dw (F_1_175 - F_1_961), F_1_175 70 PW_F117_F078 times 4 dw F_1_175, (F_1_175 - F_0_390) 71 PW_MF060_MF089 times 4 dw (F_0_298 - F_0_899), -F_0_899 72 PW_MF089_F060 times 4 dw -F_0_899, (F_1_501 - F_0_899) 73 PW_MF050_MF256 times 4 dw (F_2_053 - F_2_562), -F_2_562 74 PW_MF256_F050 times 4 dw -F_2_562, (F_3_072 - F_2_562) 75 PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1 - 1) 76 PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2 - 1) 77 PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS - 1) 78 79 ALIGNZ 32 80 81 ; -------------------------------------------------------------------------- 82 SECTION SEG_TEXT 83 BITS 32 84 ; 85 ; Perform the forward DCT on one block of samples. 86 ; 87 ; GLOBAL(void) 88 ; jsimd_fdct_islow_sse2(DCTELEM *data) 89 ; 90 91 %define data(b) (b) + 8 ; DCTELEM *data 92 93 %define original_ebp ebp + 0 94 %define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_XMMWORD 95 ; xmmword wk[WK_NUM] 96 %define WK_NUM 6 97 98 align 32 99 GLOBAL_FUNCTION(jsimd_fdct_islow_sse2) 100 101 EXTN(jsimd_fdct_islow_sse2): 102 push ebp 103 mov eax, esp ; eax = original ebp 104 sub esp, byte 4 105 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 106 mov [esp], eax 107 mov ebp, esp ; ebp = aligned ebp 108 lea esp, [wk(0)] 109 PUSHPIC ebx 110 ; push ecx ; unused 111 ; push edx ; need not be preserved 112 ; push esi ; unused 113 ; push edi ; unused 114 115 GET_GOT ebx ; get GOT address 116 117 ; ---- Pass 1: process rows. 118 119 mov edx, POINTER [data(eax)] ; (DCTELEM *) 120 121 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)] 122 movdqa xmm1, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)] 123 movdqa xmm2, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)] 124 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)] 125 126 ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27) 127 ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37) 128 129 movdqa xmm4, xmm0 ; transpose coefficients(phase 1) 130 punpcklwd xmm0, xmm1 ; xmm0=(00 10 01 11 02 12 03 13) 131 punpckhwd xmm4, xmm1 ; xmm4=(04 14 05 15 06 16 07 17) 132 movdqa xmm5, xmm2 ; transpose coefficients(phase 1) 133 punpcklwd xmm2, xmm3 ; xmm2=(20 30 21 31 22 32 23 33) 134 punpckhwd xmm5, xmm3 ; xmm5=(24 34 25 35 26 36 27 37) 135 136 movdqa xmm6, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)] 137 movdqa xmm7, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)] 138 movdqa xmm1, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)] 139 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)] 140 141 ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62) 142 ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63) 143 144 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33) 145 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37) 146 147 movdqa xmm2, xmm6 ; transpose coefficients(phase 1) 148 punpcklwd xmm6, xmm7 ; xmm6=(40 50 41 51 42 52 43 53) 149 punpckhwd xmm2, xmm7 ; xmm2=(44 54 45 55 46 56 47 57) 150 movdqa xmm5, xmm1 ; transpose coefficients(phase 1) 151 punpcklwd xmm1, xmm3 ; xmm1=(60 70 61 71 62 72 63 73) 152 punpckhwd xmm5, xmm3 ; xmm5=(64 74 65 75 66 76 67 77) 153 154 movdqa xmm7, xmm6 ; transpose coefficients(phase 2) 155 punpckldq xmm6, xmm1 ; xmm6=(40 50 60 70 41 51 61 71) 156 punpckhdq xmm7, xmm1 ; xmm7=(42 52 62 72 43 53 63 73) 157 movdqa xmm3, xmm2 ; transpose coefficients(phase 2) 158 punpckldq xmm2, xmm5 ; xmm2=(44 54 64 74 45 55 65 75) 159 punpckhdq xmm3, xmm5 ; xmm3=(46 56 66 76 47 57 67 77) 160 161 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33) 162 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37) 163 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73) 164 movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75) 165 166 movdqa xmm7, xmm0 ; transpose coefficients(phase 2) 167 punpckldq xmm0, xmm1 ; xmm0=(00 10 20 30 01 11 21 31) 168 punpckhdq xmm7, xmm1 ; xmm7=(02 12 22 32 03 13 23 33) 169 movdqa xmm2, xmm4 ; transpose coefficients(phase 2) 170 punpckldq xmm4, xmm5 ; xmm4=(04 14 24 34 05 15 25 35) 171 punpckhdq xmm2, xmm5 ; xmm2=(06 16 26 36 07 17 27 37) 172 173 movdqa xmm1, xmm0 ; transpose coefficients(phase 3) 174 punpcklqdq xmm0, xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0 175 punpckhqdq xmm1, xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1 176 movdqa xmm5, xmm2 ; transpose coefficients(phase 3) 177 punpcklqdq xmm2, xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6 178 punpckhqdq xmm5, xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7 179 180 movdqa xmm6, xmm1 181 movdqa xmm3, xmm0 182 psubw xmm1, xmm2 ; xmm1=data1-data6=tmp6 183 psubw xmm0, xmm5 ; xmm0=data0-data7=tmp7 184 paddw xmm6, xmm2 ; xmm6=data1+data6=tmp1 185 paddw xmm3, xmm5 ; xmm3=data0+data7=tmp0 186 187 movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73) 188 movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75) 189 movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6 190 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7 191 192 movdqa xmm1, xmm7 ; transpose coefficients(phase 3) 193 punpcklqdq xmm7, xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2 194 punpckhqdq xmm1, xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3 195 movdqa xmm0, xmm4 ; transpose coefficients(phase 3) 196 punpcklqdq xmm4, xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4 197 punpckhqdq xmm0, xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5 198 199 movdqa xmm2, xmm1 200 movdqa xmm5, xmm7 201 paddw xmm1, xmm4 ; xmm1=data3+data4=tmp3 202 paddw xmm7, xmm0 ; xmm7=data2+data5=tmp2 203 psubw xmm2, xmm4 ; xmm2=data3-data4=tmp4 204 psubw xmm5, xmm0 ; xmm5=data2-data5=tmp5 205 206 ; -- Even part 207 208 movdqa xmm4, xmm3 209 movdqa xmm0, xmm6 210 paddw xmm3, xmm1 ; xmm3=tmp10 211 paddw xmm6, xmm7 ; xmm6=tmp11 212 psubw xmm4, xmm1 ; xmm4=tmp13 213 psubw xmm0, xmm7 ; xmm0=tmp12 214 215 movdqa xmm1, xmm3 216 paddw xmm3, xmm6 ; xmm3=tmp10+tmp11 217 psubw xmm1, xmm6 ; xmm1=tmp10-tmp11 218 219 psllw xmm3, PASS1_BITS ; xmm3=data0 220 psllw xmm1, PASS1_BITS ; xmm1=data4 221 222 movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0 223 movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4 224 225 ; (Original) 226 ; z1 = (tmp12 + tmp13) * 0.541196100; 227 ; data2 = z1 + tmp13 * 0.765366865; 228 ; data6 = z1 + tmp12 * -1.847759065; 229 ; 230 ; (This implementation) 231 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; 232 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); 233 234 movdqa xmm7, xmm4 ; xmm4=tmp13 235 movdqa xmm6, xmm4 236 punpcklwd xmm7, xmm0 ; xmm0=tmp12 237 punpckhwd xmm6, xmm0 238 movdqa xmm4, xmm7 239 movdqa xmm0, xmm6 240 pmaddwd xmm7, [GOTOFF(ebx,PW_F130_F054)] ; xmm7=data2L 241 pmaddwd xmm6, [GOTOFF(ebx,PW_F130_F054)] ; xmm6=data2H 242 pmaddwd xmm4, [GOTOFF(ebx,PW_F054_MF130)] ; xmm4=data6L 243 pmaddwd xmm0, [GOTOFF(ebx,PW_F054_MF130)] ; xmm0=data6H 244 245 paddd xmm7, [GOTOFF(ebx,PD_DESCALE_P1)] 246 paddd xmm6, [GOTOFF(ebx,PD_DESCALE_P1)] 247 psrad xmm7, DESCALE_P1 248 psrad xmm6, DESCALE_P1 249 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P1)] 250 paddd xmm0, [GOTOFF(ebx,PD_DESCALE_P1)] 251 psrad xmm4, DESCALE_P1 252 psrad xmm0, DESCALE_P1 253 254 packssdw xmm7, xmm6 ; xmm7=data2 255 packssdw xmm4, xmm0 ; xmm4=data6 256 257 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2 258 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6 259 260 ; -- Odd part 261 262 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6 263 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7 264 265 movdqa xmm6, xmm2 ; xmm2=tmp4 266 movdqa xmm0, xmm5 ; xmm5=tmp5 267 paddw xmm6, xmm3 ; xmm6=z3 268 paddw xmm0, xmm1 ; xmm0=z4 269 270 ; (Original) 271 ; z5 = (z3 + z4) * 1.175875602; 272 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 273 ; z3 += z5; z4 += z5; 274 ; 275 ; (This implementation) 276 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 277 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 278 279 movdqa xmm7, xmm6 280 movdqa xmm4, xmm6 281 punpcklwd xmm7, xmm0 282 punpckhwd xmm4, xmm0 283 movdqa xmm6, xmm7 284 movdqa xmm0, xmm4 285 pmaddwd xmm7, [GOTOFF(ebx,PW_MF078_F117)] ; xmm7=z3L 286 pmaddwd xmm4, [GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3H 287 pmaddwd xmm6, [GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4L 288 pmaddwd xmm0, [GOTOFF(ebx,PW_F117_F078)] ; xmm0=z4H 289 290 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L 291 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H 292 293 ; (Original) 294 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; 295 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; 296 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; 297 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 298 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; 299 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; 300 ; 301 ; (This implementation) 302 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; 303 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; 304 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); 305 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); 306 ; data7 = tmp4 + z3; data5 = tmp5 + z4; 307 ; data3 = tmp6 + z3; data1 = tmp7 + z4; 308 309 movdqa xmm7, xmm2 310 movdqa xmm4, xmm2 311 punpcklwd xmm7, xmm1 312 punpckhwd xmm4, xmm1 313 movdqa xmm2, xmm7 314 movdqa xmm1, xmm4 315 pmaddwd xmm7, [GOTOFF(ebx,PW_MF060_MF089)] ; xmm7=tmp4L 316 pmaddwd xmm4, [GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4H 317 pmaddwd xmm2, [GOTOFF(ebx,PW_MF089_F060)] ; xmm2=tmp7L 318 pmaddwd xmm1, [GOTOFF(ebx,PW_MF089_F060)] ; xmm1=tmp7H 319 320 paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L 321 paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H 322 paddd xmm2, xmm6 ; xmm2=data1L 323 paddd xmm1, xmm0 ; xmm1=data1H 324 325 paddd xmm7, [GOTOFF(ebx,PD_DESCALE_P1)] 326 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P1)] 327 psrad xmm7, DESCALE_P1 328 psrad xmm4, DESCALE_P1 329 paddd xmm2, [GOTOFF(ebx,PD_DESCALE_P1)] 330 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P1)] 331 psrad xmm2, DESCALE_P1 332 psrad xmm1, DESCALE_P1 333 334 packssdw xmm7, xmm4 ; xmm7=data7 335 packssdw xmm2, xmm1 ; xmm2=data1 336 337 movdqa xmm4, xmm5 338 movdqa xmm1, xmm5 339 punpcklwd xmm4, xmm3 340 punpckhwd xmm1, xmm3 341 movdqa xmm5, xmm4 342 movdqa xmm3, xmm1 343 pmaddwd xmm4, [GOTOFF(ebx,PW_MF050_MF256)] ; xmm4=tmp5L 344 pmaddwd xmm1, [GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5H 345 pmaddwd xmm5, [GOTOFF(ebx,PW_MF256_F050)] ; xmm5=tmp6L 346 pmaddwd xmm3, [GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6H 347 348 paddd xmm4, xmm6 ; xmm4=data5L 349 paddd xmm1, xmm0 ; xmm1=data5H 350 paddd xmm5, XMMWORD [wk(0)] ; xmm5=data3L 351 paddd xmm3, XMMWORD [wk(1)] ; xmm3=data3H 352 353 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P1)] 354 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P1)] 355 psrad xmm4, DESCALE_P1 356 psrad xmm1, DESCALE_P1 357 paddd xmm5, [GOTOFF(ebx,PD_DESCALE_P1)] 358 paddd xmm3, [GOTOFF(ebx,PD_DESCALE_P1)] 359 psrad xmm5, DESCALE_P1 360 psrad xmm3, DESCALE_P1 361 362 packssdw xmm4, xmm1 ; xmm4=data5 363 packssdw xmm5, xmm3 ; xmm5=data3 364 365 ; ---- Pass 2: process columns. 366 367 ; mov edx, POINTER [data(eax)] ; (DCTELEM *) 368 369 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=col0 370 movdqa xmm0, XMMWORD [wk(4)] ; xmm0=col2 371 372 ; xmm6=(00 10 20 30 40 50 60 70), xmm0=(02 12 22 32 42 52 62 72) 373 ; xmm2=(01 11 21 31 41 51 61 71), xmm5=(03 13 23 33 43 53 63 73) 374 375 movdqa xmm1, xmm6 ; transpose coefficients(phase 1) 376 punpcklwd xmm6, xmm2 ; xmm6=(00 01 10 11 20 21 30 31) 377 punpckhwd xmm1, xmm2 ; xmm1=(40 41 50 51 60 61 70 71) 378 movdqa xmm3, xmm0 ; transpose coefficients(phase 1) 379 punpcklwd xmm0, xmm5 ; xmm0=(02 03 12 13 22 23 32 33) 380 punpckhwd xmm3, xmm5 ; xmm3=(42 43 52 53 62 63 72 73) 381 382 movdqa xmm2, XMMWORD [wk(3)] ; xmm2=col4 383 movdqa xmm5, XMMWORD [wk(5)] ; xmm5=col6 384 385 ; xmm2=(04 14 24 34 44 54 64 74), xmm5=(06 16 26 36 46 56 66 76) 386 ; xmm4=(05 15 25 35 45 55 65 75), xmm7=(07 17 27 37 47 57 67 77) 387 388 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=(02 03 12 13 22 23 32 33) 389 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(42 43 52 53 62 63 72 73) 390 391 movdqa xmm0, xmm2 ; transpose coefficients(phase 1) 392 punpcklwd xmm2, xmm4 ; xmm2=(04 05 14 15 24 25 34 35) 393 punpckhwd xmm0, xmm4 ; xmm0=(44 45 54 55 64 65 74 75) 394 movdqa xmm3, xmm5 ; transpose coefficients(phase 1) 395 punpcklwd xmm5, xmm7 ; xmm5=(06 07 16 17 26 27 36 37) 396 punpckhwd xmm3, xmm7 ; xmm3=(46 47 56 57 66 67 76 77) 397 398 movdqa xmm4, xmm2 ; transpose coefficients(phase 2) 399 punpckldq xmm2, xmm5 ; xmm2=(04 05 06 07 14 15 16 17) 400 punpckhdq xmm4, xmm5 ; xmm4=(24 25 26 27 34 35 36 37) 401 movdqa xmm7, xmm0 ; transpose coefficients(phase 2) 402 punpckldq xmm0, xmm3 ; xmm0=(44 45 46 47 54 55 56 57) 403 punpckhdq xmm7, xmm3 ; xmm7=(64 65 66 67 74 75 76 77) 404 405 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=(02 03 12 13 22 23 32 33) 406 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53 62 63 72 73) 407 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=(24 25 26 27 34 35 36 37) 408 movdqa XMMWORD [wk(3)], xmm0 ; wk(3)=(44 45 46 47 54 55 56 57) 409 410 movdqa xmm4, xmm6 ; transpose coefficients(phase 2) 411 punpckldq xmm6, xmm5 ; xmm6=(00 01 02 03 10 11 12 13) 412 punpckhdq xmm4, xmm5 ; xmm4=(20 21 22 23 30 31 32 33) 413 movdqa xmm0, xmm1 ; transpose coefficients(phase 2) 414 punpckldq xmm1, xmm3 ; xmm1=(40 41 42 43 50 51 52 53) 415 punpckhdq xmm0, xmm3 ; xmm0=(60 61 62 63 70 71 72 73) 416 417 movdqa xmm5, xmm6 ; transpose coefficients(phase 3) 418 punpcklqdq xmm6, xmm2 ; xmm6=(00 01 02 03 04 05 06 07)=data0 419 punpckhqdq xmm5, xmm2 ; xmm5=(10 11 12 13 14 15 16 17)=data1 420 movdqa xmm3, xmm0 ; transpose coefficients(phase 3) 421 punpcklqdq xmm0, xmm7 ; xmm0=(60 61 62 63 64 65 66 67)=data6 422 punpckhqdq xmm3, xmm7 ; xmm3=(70 71 72 73 74 75 76 77)=data7 423 424 movdqa xmm2, xmm5 425 movdqa xmm7, xmm6 426 psubw xmm5, xmm0 ; xmm5=data1-data6=tmp6 427 psubw xmm6, xmm3 ; xmm6=data0-data7=tmp7 428 paddw xmm2, xmm0 ; xmm2=data1+data6=tmp1 429 paddw xmm7, xmm3 ; xmm7=data0+data7=tmp0 430 431 movdqa xmm0, XMMWORD [wk(2)] ; xmm0=(24 25 26 27 34 35 36 37) 432 movdqa xmm3, XMMWORD [wk(3)] ; xmm3=(44 45 46 47 54 55 56 57) 433 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=tmp6 434 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 435 436 movdqa xmm5, xmm4 ; transpose coefficients(phase 3) 437 punpcklqdq xmm4, xmm0 ; xmm4=(20 21 22 23 24 25 26 27)=data2 438 punpckhqdq xmm5, xmm0 ; xmm5=(30 31 32 33 34 35 36 37)=data3 439 movdqa xmm6, xmm1 ; transpose coefficients(phase 3) 440 punpcklqdq xmm1, xmm3 ; xmm1=(40 41 42 43 44 45 46 47)=data4 441 punpckhqdq xmm6, xmm3 ; xmm6=(50 51 52 53 54 55 56 57)=data5 442 443 movdqa xmm0, xmm5 444 movdqa xmm3, xmm4 445 paddw xmm5, xmm1 ; xmm5=data3+data4=tmp3 446 paddw xmm4, xmm6 ; xmm4=data2+data5=tmp2 447 psubw xmm0, xmm1 ; xmm0=data3-data4=tmp4 448 psubw xmm3, xmm6 ; xmm3=data2-data5=tmp5 449 450 ; -- Even part 451 452 movdqa xmm1, xmm7 453 movdqa xmm6, xmm2 454 paddw xmm7, xmm5 ; xmm7=tmp10 455 paddw xmm2, xmm4 ; xmm2=tmp11 456 psubw xmm1, xmm5 ; xmm1=tmp13 457 psubw xmm6, xmm4 ; xmm6=tmp12 458 459 movdqa xmm5, xmm7 460 paddw xmm7, xmm2 ; xmm7=tmp10+tmp11 461 psubw xmm5, xmm2 ; xmm5=tmp10-tmp11 462 463 paddw xmm7, [GOTOFF(ebx,PW_DESCALE_P2X)] 464 paddw xmm5, [GOTOFF(ebx,PW_DESCALE_P2X)] 465 psraw xmm7, PASS1_BITS ; xmm7=data0 466 psraw xmm5, PASS1_BITS ; xmm5=data4 467 468 movdqa XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)], xmm7 469 movdqa XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)], xmm5 470 471 ; (Original) 472 ; z1 = (tmp12 + tmp13) * 0.541196100; 473 ; data2 = z1 + tmp13 * 0.765366865; 474 ; data6 = z1 + tmp12 * -1.847759065; 475 ; 476 ; (This implementation) 477 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; 478 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); 479 480 movdqa xmm4, xmm1 ; xmm1=tmp13 481 movdqa xmm2, xmm1 482 punpcklwd xmm4, xmm6 ; xmm6=tmp12 483 punpckhwd xmm2, xmm6 484 movdqa xmm1, xmm4 485 movdqa xmm6, xmm2 486 pmaddwd xmm4, [GOTOFF(ebx,PW_F130_F054)] ; xmm4=data2L 487 pmaddwd xmm2, [GOTOFF(ebx,PW_F130_F054)] ; xmm2=data2H 488 pmaddwd xmm1, [GOTOFF(ebx,PW_F054_MF130)] ; xmm1=data6L 489 pmaddwd xmm6, [GOTOFF(ebx,PW_F054_MF130)] ; xmm6=data6H 490 491 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P2)] 492 paddd xmm2, [GOTOFF(ebx,PD_DESCALE_P2)] 493 psrad xmm4, DESCALE_P2 494 psrad xmm2, DESCALE_P2 495 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P2)] 496 paddd xmm6, [GOTOFF(ebx,PD_DESCALE_P2)] 497 psrad xmm1, DESCALE_P2 498 psrad xmm6, DESCALE_P2 499 500 packssdw xmm4, xmm2 ; xmm4=data2 501 packssdw xmm1, xmm6 ; xmm1=data6 502 503 movdqa XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)], xmm4 504 movdqa XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)], xmm1 505 506 ; -- Odd part 507 508 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp6 509 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7 510 511 movdqa xmm2, xmm0 ; xmm0=tmp4 512 movdqa xmm6, xmm3 ; xmm3=tmp5 513 paddw xmm2, xmm7 ; xmm2=z3 514 paddw xmm6, xmm5 ; xmm6=z4 515 516 ; (Original) 517 ; z5 = (z3 + z4) * 1.175875602; 518 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 519 ; z3 += z5; z4 += z5; 520 ; 521 ; (This implementation) 522 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 523 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 524 525 movdqa xmm4, xmm2 526 movdqa xmm1, xmm2 527 punpcklwd xmm4, xmm6 528 punpckhwd xmm1, xmm6 529 movdqa xmm2, xmm4 530 movdqa xmm6, xmm1 531 pmaddwd xmm4, [GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3L 532 pmaddwd xmm1, [GOTOFF(ebx,PW_MF078_F117)] ; xmm1=z3H 533 pmaddwd xmm2, [GOTOFF(ebx,PW_F117_F078)] ; xmm2=z4L 534 pmaddwd xmm6, [GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4H 535 536 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=z3L 537 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=z3H 538 539 ; (Original) 540 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; 541 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; 542 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; 543 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 544 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; 545 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; 546 ; 547 ; (This implementation) 548 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; 549 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; 550 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); 551 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); 552 ; data7 = tmp4 + z3; data5 = tmp5 + z4; 553 ; data3 = tmp6 + z3; data1 = tmp7 + z4; 554 555 movdqa xmm4, xmm0 556 movdqa xmm1, xmm0 557 punpcklwd xmm4, xmm5 558 punpckhwd xmm1, xmm5 559 movdqa xmm0, xmm4 560 movdqa xmm5, xmm1 561 pmaddwd xmm4, [GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4L 562 pmaddwd xmm1, [GOTOFF(ebx,PW_MF060_MF089)] ; xmm1=tmp4H 563 pmaddwd xmm0, [GOTOFF(ebx,PW_MF089_F060)] ; xmm0=tmp7L 564 pmaddwd xmm5, [GOTOFF(ebx,PW_MF089_F060)] ; xmm5=tmp7H 565 566 paddd xmm4, XMMWORD [wk(0)] ; xmm4=data7L 567 paddd xmm1, XMMWORD [wk(1)] ; xmm1=data7H 568 paddd xmm0, xmm2 ; xmm0=data1L 569 paddd xmm5, xmm6 ; xmm5=data1H 570 571 paddd xmm4, [GOTOFF(ebx,PD_DESCALE_P2)] 572 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P2)] 573 psrad xmm4, DESCALE_P2 574 psrad xmm1, DESCALE_P2 575 paddd xmm0, [GOTOFF(ebx,PD_DESCALE_P2)] 576 paddd xmm5, [GOTOFF(ebx,PD_DESCALE_P2)] 577 psrad xmm0, DESCALE_P2 578 psrad xmm5, DESCALE_P2 579 580 packssdw xmm4, xmm1 ; xmm4=data7 581 packssdw xmm0, xmm5 ; xmm0=data1 582 583 movdqa XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)], xmm4 584 movdqa XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)], xmm0 585 586 movdqa xmm1, xmm3 587 movdqa xmm5, xmm3 588 punpcklwd xmm1, xmm7 589 punpckhwd xmm5, xmm7 590 movdqa xmm3, xmm1 591 movdqa xmm7, xmm5 592 pmaddwd xmm1, [GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5L 593 pmaddwd xmm5, [GOTOFF(ebx,PW_MF050_MF256)] ; xmm5=tmp5H 594 pmaddwd xmm3, [GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6L 595 pmaddwd xmm7, [GOTOFF(ebx,PW_MF256_F050)] ; xmm7=tmp6H 596 597 paddd xmm1, xmm2 ; xmm1=data5L 598 paddd xmm5, xmm6 ; xmm5=data5H 599 paddd xmm3, XMMWORD [wk(0)] ; xmm3=data3L 600 paddd xmm7, XMMWORD [wk(1)] ; xmm7=data3H 601 602 paddd xmm1, [GOTOFF(ebx,PD_DESCALE_P2)] 603 paddd xmm5, [GOTOFF(ebx,PD_DESCALE_P2)] 604 psrad xmm1, DESCALE_P2 605 psrad xmm5, DESCALE_P2 606 paddd xmm3, [GOTOFF(ebx,PD_DESCALE_P2)] 607 paddd xmm7, [GOTOFF(ebx,PD_DESCALE_P2)] 608 psrad xmm3, DESCALE_P2 609 psrad xmm7, DESCALE_P2 610 611 packssdw xmm1, xmm5 ; xmm1=data5 612 packssdw xmm3, xmm7 ; xmm3=data3 613 614 movdqa XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)], xmm1 615 movdqa XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)], xmm3 616 617 ; pop edi ; unused 618 ; pop esi ; unused 619 ; pop edx ; need not be preserved 620 ; pop ecx ; unused 621 POPPIC ebx 622 mov esp, ebp ; esp <- aligned ebp 623 pop esp ; esp <- original ebp 624 pop ebp 625 ret 626 627 ; For some reason, the OS X linker does not honor the request to align the 628 ; segment unless we do this. 629 align 32