jfdctint-sse2.asm (25698B)
1 ; 2 ; jfdctint.asm - accurate integer FDCT (64-bit SSE2) 3 ; 4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB 5 ; Copyright (C) 2009, 2016, 2020, 2024, D. R. Commander. 6 ; Copyright (C) 2023, Aliaksiej Kandracienka. 7 ; 8 ; Based on the x86 SIMD extension for IJG JPEG library 9 ; Copyright (C) 1999-2006, MIYASAKA Masaru. 10 ; For conditions of distribution and use, see copyright notice in jsimdext.inc 11 ; 12 ; This file should be assembled with NASM (Netwide Assembler) or Yasm. 13 ; 14 ; This file contains a slower but more accurate integer implementation of the 15 ; forward DCT (Discrete Cosine Transform). The following code is based 16 ; directly on the IJG's original jfdctint.c; see the jfdctint.c for 17 ; more details. 18 19 %include "jsimdext.inc" 20 %include "jdct.inc" 21 22 ; -------------------------------------------------------------------------- 23 24 %define CONST_BITS 13 25 %define PASS1_BITS 2 26 27 %define DESCALE_P1 (CONST_BITS - PASS1_BITS) 28 %define DESCALE_P2 (CONST_BITS + PASS1_BITS) 29 30 %if CONST_BITS == 13 31 F_0_298 equ 2446 ; FIX(0.298631336) 32 F_0_390 equ 3196 ; FIX(0.390180644) 33 F_0_541 equ 4433 ; FIX(0.541196100) 34 F_0_765 equ 6270 ; FIX(0.765366865) 35 F_0_899 equ 7373 ; FIX(0.899976223) 36 F_1_175 equ 9633 ; FIX(1.175875602) 37 F_1_501 equ 12299 ; FIX(1.501321110) 38 F_1_847 equ 15137 ; FIX(1.847759065) 39 F_1_961 equ 16069 ; FIX(1.961570560) 40 F_2_053 equ 16819 ; FIX(2.053119869) 41 F_2_562 equ 20995 ; FIX(2.562915447) 42 F_3_072 equ 25172 ; FIX(3.072711026) 43 %else 44 ; NASM cannot do compile-time arithmetic on floating-point constants. 45 %define DESCALE(x, n) (((x) + (1 << ((n) - 1))) >> (n)) 46 F_0_298 equ DESCALE( 320652955, 30 - CONST_BITS) ; FIX(0.298631336) 47 F_0_390 equ DESCALE( 418953276, 30 - CONST_BITS) ; FIX(0.390180644) 48 F_0_541 equ DESCALE( 581104887, 30 - CONST_BITS) ; FIX(0.541196100) 49 F_0_765 equ DESCALE( 821806413, 30 - CONST_BITS) ; FIX(0.765366865) 50 F_0_899 equ DESCALE( 966342111, 30 - CONST_BITS) ; FIX(0.899976223) 51 F_1_175 equ DESCALE(1262586813, 30 - CONST_BITS) ; FIX(1.175875602) 52 F_1_501 equ DESCALE(1612031267, 30 - CONST_BITS) ; FIX(1.501321110) 53 F_1_847 equ DESCALE(1984016188, 30 - CONST_BITS) ; FIX(1.847759065) 54 F_1_961 equ DESCALE(2106220350, 30 - CONST_BITS) ; FIX(1.961570560) 55 F_2_053 equ DESCALE(2204520673, 30 - CONST_BITS) ; FIX(2.053119869) 56 F_2_562 equ DESCALE(2751909506, 30 - CONST_BITS) ; FIX(2.562915447) 57 F_3_072 equ DESCALE(3299298341, 30 - CONST_BITS) ; FIX(3.072711026) 58 %endif 59 60 ; -------------------------------------------------------------------------- 61 SECTION SEG_CONST 62 63 ALIGNZ 32 64 GLOBAL_DATA(jconst_fdct_islow_sse2) 65 66 EXTN(jconst_fdct_islow_sse2): 67 68 PW_F130_F054 times 4 dw (F_0_541 + F_0_765), F_0_541 69 PW_F054_MF130 times 4 dw F_0_541, (F_0_541 - F_1_847) 70 PW_MF078_F117 times 4 dw (F_1_175 - F_1_961), F_1_175 71 PW_F117_F078 times 4 dw F_1_175, (F_1_175 - F_0_390) 72 PW_MF060_MF089 times 4 dw (F_0_298 - F_0_899), -F_0_899 73 PW_MF089_F060 times 4 dw -F_0_899, (F_1_501 - F_0_899) 74 PW_MF050_MF256 times 4 dw (F_2_053 - F_2_562), -F_2_562 75 PW_MF256_F050 times 4 dw -F_2_562, (F_3_072 - F_2_562) 76 PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1 - 1) 77 PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2 - 1) 78 PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS - 1) 79 80 ALIGNZ 32 81 82 ; -------------------------------------------------------------------------- 83 SECTION SEG_TEXT 84 BITS 64 85 ; 86 ; Perform the forward DCT on one block of samples. 87 ; 88 ; GLOBAL(void) 89 ; jsimd_fdct_islow_sse2(DCTELEM *data) 90 ; 91 92 ; r10 = DCTELEM *data 93 94 %define wk(i) r15 - (WK_NUM - (i)) * SIZEOF_XMMWORD ; xmmword wk[WK_NUM] 95 %define WK_NUM 6 96 97 align 32 98 GLOBAL_FUNCTION(jsimd_fdct_islow_sse2) 99 100 EXTN(jsimd_fdct_islow_sse2): 101 ENDBR64 102 push rbp 103 mov rbp, rsp 104 push r15 105 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 106 ; Allocate stack space for wk array. r15 is used to access it. 107 mov r15, rsp 108 sub rsp, byte (SIZEOF_XMMWORD * WK_NUM) 109 COLLECT_ARGS 1 110 111 ; ---- Pass 1: process rows. 112 113 mov rdx, r10 ; (DCTELEM *) 114 115 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)] 116 movdqa xmm1, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)] 117 movdqa xmm2, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)] 118 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)] 119 120 ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27) 121 ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37) 122 123 movdqa xmm4, xmm0 ; transpose coefficients(phase 1) 124 punpcklwd xmm0, xmm1 ; xmm0=(00 10 01 11 02 12 03 13) 125 punpckhwd xmm4, xmm1 ; xmm4=(04 14 05 15 06 16 07 17) 126 movdqa xmm5, xmm2 ; transpose coefficients(phase 1) 127 punpcklwd xmm2, xmm3 ; xmm2=(20 30 21 31 22 32 23 33) 128 punpckhwd xmm5, xmm3 ; xmm5=(24 34 25 35 26 36 27 37) 129 130 movdqa xmm6, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)] 131 movdqa xmm7, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)] 132 movdqa xmm1, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)] 133 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)] 134 135 ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62) 136 ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63) 137 138 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33) 139 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37) 140 141 movdqa xmm2, xmm6 ; transpose coefficients(phase 1) 142 punpcklwd xmm6, xmm7 ; xmm6=(40 50 41 51 42 52 43 53) 143 punpckhwd xmm2, xmm7 ; xmm2=(44 54 45 55 46 56 47 57) 144 movdqa xmm5, xmm1 ; transpose coefficients(phase 1) 145 punpcklwd xmm1, xmm3 ; xmm1=(60 70 61 71 62 72 63 73) 146 punpckhwd xmm5, xmm3 ; xmm5=(64 74 65 75 66 76 67 77) 147 148 movdqa xmm7, xmm6 ; transpose coefficients(phase 2) 149 punpckldq xmm6, xmm1 ; xmm6=(40 50 60 70 41 51 61 71) 150 punpckhdq xmm7, xmm1 ; xmm7=(42 52 62 72 43 53 63 73) 151 movdqa xmm3, xmm2 ; transpose coefficients(phase 2) 152 punpckldq xmm2, xmm5 ; xmm2=(44 54 64 74 45 55 65 75) 153 punpckhdq xmm3, xmm5 ; xmm3=(46 56 66 76 47 57 67 77) 154 155 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33) 156 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37) 157 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73) 158 movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75) 159 160 movdqa xmm7, xmm0 ; transpose coefficients(phase 2) 161 punpckldq xmm0, xmm1 ; xmm0=(00 10 20 30 01 11 21 31) 162 punpckhdq xmm7, xmm1 ; xmm7=(02 12 22 32 03 13 23 33) 163 movdqa xmm2, xmm4 ; transpose coefficients(phase 2) 164 punpckldq xmm4, xmm5 ; xmm4=(04 14 24 34 05 15 25 35) 165 punpckhdq xmm2, xmm5 ; xmm2=(06 16 26 36 07 17 27 37) 166 167 movdqa xmm1, xmm0 ; transpose coefficients(phase 3) 168 punpcklqdq xmm0, xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0 169 punpckhqdq xmm1, xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1 170 movdqa xmm5, xmm2 ; transpose coefficients(phase 3) 171 punpcklqdq xmm2, xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6 172 punpckhqdq xmm5, xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7 173 174 movdqa xmm6, xmm1 175 movdqa xmm3, xmm0 176 psubw xmm1, xmm2 ; xmm1=data1-data6=tmp6 177 psubw xmm0, xmm5 ; xmm0=data0-data7=tmp7 178 paddw xmm6, xmm2 ; xmm6=data1+data6=tmp1 179 paddw xmm3, xmm5 ; xmm3=data0+data7=tmp0 180 181 movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73) 182 movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75) 183 movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6 184 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7 185 186 movdqa xmm1, xmm7 ; transpose coefficients(phase 3) 187 punpcklqdq xmm7, xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2 188 punpckhqdq xmm1, xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3 189 movdqa xmm0, xmm4 ; transpose coefficients(phase 3) 190 punpcklqdq xmm4, xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4 191 punpckhqdq xmm0, xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5 192 193 movdqa xmm2, xmm1 194 movdqa xmm5, xmm7 195 paddw xmm1, xmm4 ; xmm1=data3+data4=tmp3 196 paddw xmm7, xmm0 ; xmm7=data2+data5=tmp2 197 psubw xmm2, xmm4 ; xmm2=data3-data4=tmp4 198 psubw xmm5, xmm0 ; xmm5=data2-data5=tmp5 199 200 ; -- Even part 201 202 movdqa xmm4, xmm3 203 movdqa xmm0, xmm6 204 paddw xmm3, xmm1 ; xmm3=tmp10 205 paddw xmm6, xmm7 ; xmm6=tmp11 206 psubw xmm4, xmm1 ; xmm4=tmp13 207 psubw xmm0, xmm7 ; xmm0=tmp12 208 209 movdqa xmm1, xmm3 210 paddw xmm3, xmm6 ; xmm3=tmp10+tmp11 211 psubw xmm1, xmm6 ; xmm1=tmp10-tmp11 212 213 psllw xmm3, PASS1_BITS ; xmm3=data0 214 psllw xmm1, PASS1_BITS ; xmm1=data4 215 216 movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0 217 movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4 218 219 ; (Original) 220 ; z1 = (tmp12 + tmp13) * 0.541196100; 221 ; data2 = z1 + tmp13 * 0.765366865; 222 ; data6 = z1 + tmp12 * -1.847759065; 223 ; 224 ; (This implementation) 225 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; 226 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); 227 228 movdqa xmm7, xmm4 ; xmm4=tmp13 229 movdqa xmm6, xmm4 230 punpcklwd xmm7, xmm0 ; xmm0=tmp12 231 punpckhwd xmm6, xmm0 232 movdqa xmm4, xmm7 233 movdqa xmm0, xmm6 234 pmaddwd xmm7, [rel PW_F130_F054] ; xmm7=data2L 235 pmaddwd xmm6, [rel PW_F130_F054] ; xmm6=data2H 236 pmaddwd xmm4, [rel PW_F054_MF130] ; xmm4=data6L 237 pmaddwd xmm0, [rel PW_F054_MF130] ; xmm0=data6H 238 239 paddd xmm7, [rel PD_DESCALE_P1] 240 paddd xmm6, [rel PD_DESCALE_P1] 241 psrad xmm7, DESCALE_P1 242 psrad xmm6, DESCALE_P1 243 paddd xmm4, [rel PD_DESCALE_P1] 244 paddd xmm0, [rel PD_DESCALE_P1] 245 psrad xmm4, DESCALE_P1 246 psrad xmm0, DESCALE_P1 247 248 packssdw xmm7, xmm6 ; xmm7=data2 249 packssdw xmm4, xmm0 ; xmm4=data6 250 251 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2 252 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6 253 254 ; -- Odd part 255 256 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6 257 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7 258 259 movdqa xmm6, xmm2 ; xmm2=tmp4 260 movdqa xmm0, xmm5 ; xmm5=tmp5 261 paddw xmm6, xmm3 ; xmm6=z3 262 paddw xmm0, xmm1 ; xmm0=z4 263 264 ; (Original) 265 ; z5 = (z3 + z4) * 1.175875602; 266 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 267 ; z3 += z5; z4 += z5; 268 ; 269 ; (This implementation) 270 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 271 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 272 273 movdqa xmm7, xmm6 274 movdqa xmm4, xmm6 275 punpcklwd xmm7, xmm0 276 punpckhwd xmm4, xmm0 277 movdqa xmm6, xmm7 278 movdqa xmm0, xmm4 279 pmaddwd xmm7, [rel PW_MF078_F117] ; xmm7=z3L 280 pmaddwd xmm4, [rel PW_MF078_F117] ; xmm4=z3H 281 pmaddwd xmm6, [rel PW_F117_F078] ; xmm6=z4L 282 pmaddwd xmm0, [rel PW_F117_F078] ; xmm0=z4H 283 284 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L 285 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H 286 287 ; (Original) 288 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; 289 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; 290 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; 291 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 292 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; 293 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; 294 ; 295 ; (This implementation) 296 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; 297 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; 298 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); 299 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); 300 ; data7 = tmp4 + z3; data5 = tmp5 + z4; 301 ; data3 = tmp6 + z3; data1 = tmp7 + z4; 302 303 movdqa xmm7, xmm2 304 movdqa xmm4, xmm2 305 punpcklwd xmm7, xmm1 306 punpckhwd xmm4, xmm1 307 movdqa xmm2, xmm7 308 movdqa xmm1, xmm4 309 pmaddwd xmm7, [rel PW_MF060_MF089] ; xmm7=tmp4L 310 pmaddwd xmm4, [rel PW_MF060_MF089] ; xmm4=tmp4H 311 pmaddwd xmm2, [rel PW_MF089_F060] ; xmm2=tmp7L 312 pmaddwd xmm1, [rel PW_MF089_F060] ; xmm1=tmp7H 313 314 paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L 315 paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H 316 paddd xmm2, xmm6 ; xmm2=data1L 317 paddd xmm1, xmm0 ; xmm1=data1H 318 319 paddd xmm7, [rel PD_DESCALE_P1] 320 paddd xmm4, [rel PD_DESCALE_P1] 321 psrad xmm7, DESCALE_P1 322 psrad xmm4, DESCALE_P1 323 paddd xmm2, [rel PD_DESCALE_P1] 324 paddd xmm1, [rel PD_DESCALE_P1] 325 psrad xmm2, DESCALE_P1 326 psrad xmm1, DESCALE_P1 327 328 packssdw xmm7, xmm4 ; xmm7=data7 329 packssdw xmm2, xmm1 ; xmm2=data1 330 331 movdqa xmm4, xmm5 332 movdqa xmm1, xmm5 333 punpcklwd xmm4, xmm3 334 punpckhwd xmm1, xmm3 335 movdqa xmm5, xmm4 336 movdqa xmm3, xmm1 337 pmaddwd xmm4, [rel PW_MF050_MF256] ; xmm4=tmp5L 338 pmaddwd xmm1, [rel PW_MF050_MF256] ; xmm1=tmp5H 339 pmaddwd xmm5, [rel PW_MF256_F050] ; xmm5=tmp6L 340 pmaddwd xmm3, [rel PW_MF256_F050] ; xmm3=tmp6H 341 342 paddd xmm4, xmm6 ; xmm4=data5L 343 paddd xmm1, xmm0 ; xmm1=data5H 344 paddd xmm5, XMMWORD [wk(0)] ; xmm5=data3L 345 paddd xmm3, XMMWORD [wk(1)] ; xmm3=data3H 346 347 paddd xmm4, [rel PD_DESCALE_P1] 348 paddd xmm1, [rel PD_DESCALE_P1] 349 psrad xmm4, DESCALE_P1 350 psrad xmm1, DESCALE_P1 351 paddd xmm5, [rel PD_DESCALE_P1] 352 paddd xmm3, [rel PD_DESCALE_P1] 353 psrad xmm5, DESCALE_P1 354 psrad xmm3, DESCALE_P1 355 356 packssdw xmm4, xmm1 ; xmm4=data5 357 packssdw xmm5, xmm3 ; xmm5=data3 358 359 ; ---- Pass 2: process columns. 360 361 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=col0 362 movdqa xmm0, XMMWORD [wk(4)] ; xmm0=col2 363 364 ; xmm6=(00 10 20 30 40 50 60 70), xmm0=(02 12 22 32 42 52 62 72) 365 ; xmm2=(01 11 21 31 41 51 61 71), xmm5=(03 13 23 33 43 53 63 73) 366 367 movdqa xmm1, xmm6 ; transpose coefficients(phase 1) 368 punpcklwd xmm6, xmm2 ; xmm6=(00 01 10 11 20 21 30 31) 369 punpckhwd xmm1, xmm2 ; xmm1=(40 41 50 51 60 61 70 71) 370 movdqa xmm3, xmm0 ; transpose coefficients(phase 1) 371 punpcklwd xmm0, xmm5 ; xmm0=(02 03 12 13 22 23 32 33) 372 punpckhwd xmm3, xmm5 ; xmm3=(42 43 52 53 62 63 72 73) 373 374 movdqa xmm2, XMMWORD [wk(3)] ; xmm2=col4 375 movdqa xmm5, XMMWORD [wk(5)] ; xmm5=col6 376 377 ; xmm2=(04 14 24 34 44 54 64 74), xmm5=(06 16 26 36 46 56 66 76) 378 ; xmm4=(05 15 25 35 45 55 65 75), xmm7=(07 17 27 37 47 57 67 77) 379 380 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=(02 03 12 13 22 23 32 33) 381 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(42 43 52 53 62 63 72 73) 382 383 movdqa xmm0, xmm2 ; transpose coefficients(phase 1) 384 punpcklwd xmm2, xmm4 ; xmm2=(04 05 14 15 24 25 34 35) 385 punpckhwd xmm0, xmm4 ; xmm0=(44 45 54 55 64 65 74 75) 386 movdqa xmm3, xmm5 ; transpose coefficients(phase 1) 387 punpcklwd xmm5, xmm7 ; xmm5=(06 07 16 17 26 27 36 37) 388 punpckhwd xmm3, xmm7 ; xmm3=(46 47 56 57 66 67 76 77) 389 390 movdqa xmm4, xmm2 ; transpose coefficients(phase 2) 391 punpckldq xmm2, xmm5 ; xmm2=(04 05 06 07 14 15 16 17) 392 punpckhdq xmm4, xmm5 ; xmm4=(24 25 26 27 34 35 36 37) 393 movdqa xmm7, xmm0 ; transpose coefficients(phase 2) 394 punpckldq xmm0, xmm3 ; xmm0=(44 45 46 47 54 55 56 57) 395 punpckhdq xmm7, xmm3 ; xmm7=(64 65 66 67 74 75 76 77) 396 397 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=(02 03 12 13 22 23 32 33) 398 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53 62 63 72 73) 399 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=(24 25 26 27 34 35 36 37) 400 movdqa XMMWORD [wk(3)], xmm0 ; wk(3)=(44 45 46 47 54 55 56 57) 401 402 movdqa xmm4, xmm6 ; transpose coefficients(phase 2) 403 punpckldq xmm6, xmm5 ; xmm6=(00 01 02 03 10 11 12 13) 404 punpckhdq xmm4, xmm5 ; xmm4=(20 21 22 23 30 31 32 33) 405 movdqa xmm0, xmm1 ; transpose coefficients(phase 2) 406 punpckldq xmm1, xmm3 ; xmm1=(40 41 42 43 50 51 52 53) 407 punpckhdq xmm0, xmm3 ; xmm0=(60 61 62 63 70 71 72 73) 408 409 movdqa xmm5, xmm6 ; transpose coefficients(phase 3) 410 punpcklqdq xmm6, xmm2 ; xmm6=(00 01 02 03 04 05 06 07)=data0 411 punpckhqdq xmm5, xmm2 ; xmm5=(10 11 12 13 14 15 16 17)=data1 412 movdqa xmm3, xmm0 ; transpose coefficients(phase 3) 413 punpcklqdq xmm0, xmm7 ; xmm0=(60 61 62 63 64 65 66 67)=data6 414 punpckhqdq xmm3, xmm7 ; xmm3=(70 71 72 73 74 75 76 77)=data7 415 416 movdqa xmm2, xmm5 417 movdqa xmm7, xmm6 418 psubw xmm5, xmm0 ; xmm5=data1-data6=tmp6 419 psubw xmm6, xmm3 ; xmm6=data0-data7=tmp7 420 paddw xmm2, xmm0 ; xmm2=data1+data6=tmp1 421 paddw xmm7, xmm3 ; xmm7=data0+data7=tmp0 422 423 movdqa xmm0, XMMWORD [wk(2)] ; xmm0=(24 25 26 27 34 35 36 37) 424 movdqa xmm3, XMMWORD [wk(3)] ; xmm3=(44 45 46 47 54 55 56 57) 425 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=tmp6 426 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 427 428 movdqa xmm5, xmm4 ; transpose coefficients(phase 3) 429 punpcklqdq xmm4, xmm0 ; xmm4=(20 21 22 23 24 25 26 27)=data2 430 punpckhqdq xmm5, xmm0 ; xmm5=(30 31 32 33 34 35 36 37)=data3 431 movdqa xmm6, xmm1 ; transpose coefficients(phase 3) 432 punpcklqdq xmm1, xmm3 ; xmm1=(40 41 42 43 44 45 46 47)=data4 433 punpckhqdq xmm6, xmm3 ; xmm6=(50 51 52 53 54 55 56 57)=data5 434 435 movdqa xmm0, xmm5 436 movdqa xmm3, xmm4 437 paddw xmm5, xmm1 ; xmm5=data3+data4=tmp3 438 paddw xmm4, xmm6 ; xmm4=data2+data5=tmp2 439 psubw xmm0, xmm1 ; xmm0=data3-data4=tmp4 440 psubw xmm3, xmm6 ; xmm3=data2-data5=tmp5 441 442 ; -- Even part 443 444 movdqa xmm1, xmm7 445 movdqa xmm6, xmm2 446 paddw xmm7, xmm5 ; xmm7=tmp10 447 paddw xmm2, xmm4 ; xmm2=tmp11 448 psubw xmm1, xmm5 ; xmm1=tmp13 449 psubw xmm6, xmm4 ; xmm6=tmp12 450 451 movdqa xmm5, xmm7 452 paddw xmm7, xmm2 ; xmm7=tmp10+tmp11 453 psubw xmm5, xmm2 ; xmm5=tmp10-tmp11 454 455 paddw xmm7, [rel PW_DESCALE_P2X] 456 paddw xmm5, [rel PW_DESCALE_P2X] 457 psraw xmm7, PASS1_BITS ; xmm7=data0 458 psraw xmm5, PASS1_BITS ; xmm5=data4 459 460 movdqa XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)], xmm7 461 movdqa XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)], xmm5 462 463 ; (Original) 464 ; z1 = (tmp12 + tmp13) * 0.541196100; 465 ; data2 = z1 + tmp13 * 0.765366865; 466 ; data6 = z1 + tmp12 * -1.847759065; 467 ; 468 ; (This implementation) 469 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; 470 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); 471 472 movdqa xmm4, xmm1 ; xmm1=tmp13 473 movdqa xmm2, xmm1 474 punpcklwd xmm4, xmm6 ; xmm6=tmp12 475 punpckhwd xmm2, xmm6 476 movdqa xmm1, xmm4 477 movdqa xmm6, xmm2 478 pmaddwd xmm4, [rel PW_F130_F054] ; xmm4=data2L 479 pmaddwd xmm2, [rel PW_F130_F054] ; xmm2=data2H 480 pmaddwd xmm1, [rel PW_F054_MF130] ; xmm1=data6L 481 pmaddwd xmm6, [rel PW_F054_MF130] ; xmm6=data6H 482 483 paddd xmm4, [rel PD_DESCALE_P2] 484 paddd xmm2, [rel PD_DESCALE_P2] 485 psrad xmm4, DESCALE_P2 486 psrad xmm2, DESCALE_P2 487 paddd xmm1, [rel PD_DESCALE_P2] 488 paddd xmm6, [rel PD_DESCALE_P2] 489 psrad xmm1, DESCALE_P2 490 psrad xmm6, DESCALE_P2 491 492 packssdw xmm4, xmm2 ; xmm4=data2 493 packssdw xmm1, xmm6 ; xmm1=data6 494 495 movdqa XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)], xmm4 496 movdqa XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)], xmm1 497 498 ; -- Odd part 499 500 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp6 501 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7 502 503 movdqa xmm2, xmm0 ; xmm0=tmp4 504 movdqa xmm6, xmm3 ; xmm3=tmp5 505 paddw xmm2, xmm7 ; xmm2=z3 506 paddw xmm6, xmm5 ; xmm6=z4 507 508 ; (Original) 509 ; z5 = (z3 + z4) * 1.175875602; 510 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 511 ; z3 += z5; z4 += z5; 512 ; 513 ; (This implementation) 514 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 515 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 516 517 movdqa xmm4, xmm2 518 movdqa xmm1, xmm2 519 punpcklwd xmm4, xmm6 520 punpckhwd xmm1, xmm6 521 movdqa xmm2, xmm4 522 movdqa xmm6, xmm1 523 pmaddwd xmm4, [rel PW_MF078_F117] ; xmm4=z3L 524 pmaddwd xmm1, [rel PW_MF078_F117] ; xmm1=z3H 525 pmaddwd xmm2, [rel PW_F117_F078] ; xmm2=z4L 526 pmaddwd xmm6, [rel PW_F117_F078] ; xmm6=z4H 527 528 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=z3L 529 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=z3H 530 531 ; (Original) 532 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; 533 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; 534 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; 535 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 536 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; 537 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; 538 ; 539 ; (This implementation) 540 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; 541 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; 542 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); 543 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); 544 ; data7 = tmp4 + z3; data5 = tmp5 + z4; 545 ; data3 = tmp6 + z3; data1 = tmp7 + z4; 546 547 movdqa xmm4, xmm0 548 movdqa xmm1, xmm0 549 punpcklwd xmm4, xmm5 550 punpckhwd xmm1, xmm5 551 movdqa xmm0, xmm4 552 movdqa xmm5, xmm1 553 pmaddwd xmm4, [rel PW_MF060_MF089] ; xmm4=tmp4L 554 pmaddwd xmm1, [rel PW_MF060_MF089] ; xmm1=tmp4H 555 pmaddwd xmm0, [rel PW_MF089_F060] ; xmm0=tmp7L 556 pmaddwd xmm5, [rel PW_MF089_F060] ; xmm5=tmp7H 557 558 paddd xmm4, XMMWORD [wk(0)] ; xmm4=data7L 559 paddd xmm1, XMMWORD [wk(1)] ; xmm1=data7H 560 paddd xmm0, xmm2 ; xmm0=data1L 561 paddd xmm5, xmm6 ; xmm5=data1H 562 563 paddd xmm4, [rel PD_DESCALE_P2] 564 paddd xmm1, [rel PD_DESCALE_P2] 565 psrad xmm4, DESCALE_P2 566 psrad xmm1, DESCALE_P2 567 paddd xmm0, [rel PD_DESCALE_P2] 568 paddd xmm5, [rel PD_DESCALE_P2] 569 psrad xmm0, DESCALE_P2 570 psrad xmm5, DESCALE_P2 571 572 packssdw xmm4, xmm1 ; xmm4=data7 573 packssdw xmm0, xmm5 ; xmm0=data1 574 575 movdqa XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)], xmm4 576 movdqa XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)], xmm0 577 578 movdqa xmm1, xmm3 579 movdqa xmm5, xmm3 580 punpcklwd xmm1, xmm7 581 punpckhwd xmm5, xmm7 582 movdqa xmm3, xmm1 583 movdqa xmm7, xmm5 584 pmaddwd xmm1, [rel PW_MF050_MF256] ; xmm1=tmp5L 585 pmaddwd xmm5, [rel PW_MF050_MF256] ; xmm5=tmp5H 586 pmaddwd xmm3, [rel PW_MF256_F050] ; xmm3=tmp6L 587 pmaddwd xmm7, [rel PW_MF256_F050] ; xmm7=tmp6H 588 589 paddd xmm1, xmm2 ; xmm1=data5L 590 paddd xmm5, xmm6 ; xmm5=data5H 591 paddd xmm3, XMMWORD [wk(0)] ; xmm3=data3L 592 paddd xmm7, XMMWORD [wk(1)] ; xmm7=data3H 593 594 paddd xmm1, [rel PD_DESCALE_P2] 595 paddd xmm5, [rel PD_DESCALE_P2] 596 psrad xmm1, DESCALE_P2 597 psrad xmm5, DESCALE_P2 598 paddd xmm3, [rel PD_DESCALE_P2] 599 paddd xmm7, [rel PD_DESCALE_P2] 600 psrad xmm3, DESCALE_P2 601 psrad xmm7, DESCALE_P2 602 603 packssdw xmm1, xmm5 ; xmm1=data5 604 packssdw xmm3, xmm7 ; xmm3=data3 605 606 movdqa XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)], xmm1 607 movdqa XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)], xmm3 608 609 UNCOLLECT_ARGS 1 610 lea rsp, [rbp-8] 611 pop r15 612 pop rbp 613 ret 614 615 ; For some reason, the OS X linker does not honor the request to align the 616 ; segment unless we do this. 617 align 32