1 ; 2 ; jfdctint.asm - accurate integer FDCT (SSE2) 3 ; 4 ; Copyright 2009 Pierre Ossman <ossman (a] 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 ; forward DCT (Discrete Cosine Transform). The following code is based 19 ; directly on the IJG's original jfdctint.c; see the jfdctint.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) 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_fdct_islow_sse2) 70 71 EXTN(jconst_fdct_islow_sse2): 72 73 PW_F130_F054 times 4 dw (F_0_541+F_0_765), F_0_541 74 PW_F054_MF130 times 4 dw F_0_541, (F_0_541-F_1_847) 75 PW_MF078_F117 times 4 dw (F_1_175-F_1_961), F_1_175 76 PW_F117_F078 times 4 dw F_1_175, (F_1_175-F_0_390) 77 PW_MF060_MF089 times 4 dw (F_0_298-F_0_899),-F_0_899 78 PW_MF089_F060 times 4 dw -F_0_899, (F_1_501-F_0_899) 79 PW_MF050_MF256 times 4 dw (F_2_053-F_2_562),-F_2_562 80 PW_MF256_F050 times 4 dw -F_2_562, (F_3_072-F_2_562) 81 PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1-1) 82 PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2-1) 83 PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS-1) 84 85 alignz 16 86 87 ; -------------------------------------------------------------------------- 88 SECTION SEG_TEXT 89 BITS 32 90 ; 91 ; Perform the forward DCT on one block of samples. 92 ; 93 ; GLOBAL(void) 94 ; jsimd_fdct_islow_sse2 (DCTELEM * data) 95 ; 96 97 %define data(b) (b)+8 ; DCTELEM * data 98 99 %define original_ebp ebp+0 100 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] 101 %define WK_NUM 6 102 103 align 16 104 global EXTN(jsimd_fdct_islow_sse2) 105 106 EXTN(jsimd_fdct_islow_sse2): 107 push ebp 108 mov eax,esp ; eax = original ebp 109 sub esp, byte 4 110 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 111 mov [esp],eax 112 mov ebp,esp ; ebp = aligned ebp 113 lea esp, [wk(0)] 114 pushpic ebx 115 ; push ecx ; unused 116 ; push edx ; need not be preserved 117 ; push esi ; unused 118 ; push edi ; unused 119 120 get_GOT ebx ; get GOT address 121 122 ; ---- Pass 1: process rows. 123 124 mov edx, POINTER [data(eax)] ; (DCTELEM *) 125 126 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)] 127 movdqa xmm1, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)] 128 movdqa xmm2, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)] 129 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)] 130 131 ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27) 132 ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37) 133 134 movdqa xmm4,xmm0 ; transpose coefficients(phase 1) 135 punpcklwd xmm0,xmm1 ; xmm0=(00 10 01 11 02 12 03 13) 136 punpckhwd xmm4,xmm1 ; xmm4=(04 14 05 15 06 16 07 17) 137 movdqa xmm5,xmm2 ; transpose coefficients(phase 1) 138 punpcklwd xmm2,xmm3 ; xmm2=(20 30 21 31 22 32 23 33) 139 punpckhwd xmm5,xmm3 ; xmm5=(24 34 25 35 26 36 27 37) 140 141 movdqa xmm6, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)] 142 movdqa xmm7, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)] 143 movdqa xmm1, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)] 144 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)] 145 146 ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62) 147 ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63) 148 149 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33) 150 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37) 151 152 movdqa xmm2,xmm6 ; transpose coefficients(phase 1) 153 punpcklwd xmm6,xmm7 ; xmm6=(40 50 41 51 42 52 43 53) 154 punpckhwd xmm2,xmm7 ; xmm2=(44 54 45 55 46 56 47 57) 155 movdqa xmm5,xmm1 ; transpose coefficients(phase 1) 156 punpcklwd xmm1,xmm3 ; xmm1=(60 70 61 71 62 72 63 73) 157 punpckhwd xmm5,xmm3 ; xmm5=(64 74 65 75 66 76 67 77) 158 159 movdqa xmm7,xmm6 ; transpose coefficients(phase 2) 160 punpckldq xmm6,xmm1 ; xmm6=(40 50 60 70 41 51 61 71) 161 punpckhdq xmm7,xmm1 ; xmm7=(42 52 62 72 43 53 63 73) 162 movdqa xmm3,xmm2 ; transpose coefficients(phase 2) 163 punpckldq xmm2,xmm5 ; xmm2=(44 54 64 74 45 55 65 75) 164 punpckhdq xmm3,xmm5 ; xmm3=(46 56 66 76 47 57 67 77) 165 166 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33) 167 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37) 168 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73) 169 movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75) 170 171 movdqa xmm7,xmm0 ; transpose coefficients(phase 2) 172 punpckldq xmm0,xmm1 ; xmm0=(00 10 20 30 01 11 21 31) 173 punpckhdq xmm7,xmm1 ; xmm7=(02 12 22 32 03 13 23 33) 174 movdqa xmm2,xmm4 ; transpose coefficients(phase 2) 175 punpckldq xmm4,xmm5 ; xmm4=(04 14 24 34 05 15 25 35) 176 punpckhdq xmm2,xmm5 ; xmm2=(06 16 26 36 07 17 27 37) 177 178 movdqa xmm1,xmm0 ; transpose coefficients(phase 3) 179 punpcklqdq xmm0,xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0 180 punpckhqdq xmm1,xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1 181 movdqa xmm5,xmm2 ; transpose coefficients(phase 3) 182 punpcklqdq xmm2,xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6 183 punpckhqdq xmm5,xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7 184 185 movdqa xmm6,xmm1 186 movdqa xmm3,xmm0 187 psubw xmm1,xmm2 ; xmm1=data1-data6=tmp6 188 psubw xmm0,xmm5 ; xmm0=data0-data7=tmp7 189 paddw xmm6,xmm2 ; xmm6=data1+data6=tmp1 190 paddw xmm3,xmm5 ; xmm3=data0+data7=tmp0 191 192 movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73) 193 movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75) 194 movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6 195 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7 196 197 movdqa xmm1,xmm7 ; transpose coefficients(phase 3) 198 punpcklqdq xmm7,xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2 199 punpckhqdq xmm1,xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3 200 movdqa xmm0,xmm4 ; transpose coefficients(phase 3) 201 punpcklqdq xmm4,xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4 202 punpckhqdq xmm0,xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5 203 204 movdqa xmm2,xmm1 205 movdqa xmm5,xmm7 206 paddw xmm1,xmm4 ; xmm1=data3+data4=tmp3 207 paddw xmm7,xmm0 ; xmm7=data2+data5=tmp2 208 psubw xmm2,xmm4 ; xmm2=data3-data4=tmp4 209 psubw xmm5,xmm0 ; xmm5=data2-data5=tmp5 210 211 ; -- Even part 212 213 movdqa xmm4,xmm3 214 movdqa xmm0,xmm6 215 paddw xmm3,xmm1 ; xmm3=tmp10 216 paddw xmm6,xmm7 ; xmm6=tmp11 217 psubw xmm4,xmm1 ; xmm4=tmp13 218 psubw xmm0,xmm7 ; xmm0=tmp12 219 220 movdqa xmm1,xmm3 221 paddw xmm3,xmm6 ; xmm3=tmp10+tmp11 222 psubw xmm1,xmm6 ; xmm1=tmp10-tmp11 223 224 psllw xmm3,PASS1_BITS ; xmm3=data0 225 psllw xmm1,PASS1_BITS ; xmm1=data4 226 227 movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0 228 movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4 229 230 ; (Original) 231 ; z1 = (tmp12 + tmp13) * 0.541196100; 232 ; data2 = z1 + tmp13 * 0.765366865; 233 ; data6 = z1 + tmp12 * -1.847759065; 234 ; 235 ; (This implementation) 236 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; 237 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); 238 239 movdqa xmm7,xmm4 ; xmm4=tmp13 240 movdqa xmm6,xmm4 241 punpcklwd xmm7,xmm0 ; xmm0=tmp12 242 punpckhwd xmm6,xmm0 243 movdqa xmm4,xmm7 244 movdqa xmm0,xmm6 245 pmaddwd xmm7,[GOTOFF(ebx,PW_F130_F054)] ; xmm7=data2L 246 pmaddwd xmm6,[GOTOFF(ebx,PW_F130_F054)] ; xmm6=data2H 247 pmaddwd xmm4,[GOTOFF(ebx,PW_F054_MF130)] ; xmm4=data6L 248 pmaddwd xmm0,[GOTOFF(ebx,PW_F054_MF130)] ; xmm0=data6H 249 250 paddd xmm7,[GOTOFF(ebx,PD_DESCALE_P1)] 251 paddd xmm6,[GOTOFF(ebx,PD_DESCALE_P1)] 252 psrad xmm7,DESCALE_P1 253 psrad xmm6,DESCALE_P1 254 paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P1)] 255 paddd xmm0,[GOTOFF(ebx,PD_DESCALE_P1)] 256 psrad xmm4,DESCALE_P1 257 psrad xmm0,DESCALE_P1 258 259 packssdw xmm7,xmm6 ; xmm7=data2 260 packssdw xmm4,xmm0 ; xmm4=data6 261 262 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2 263 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6 264 265 ; -- Odd part 266 267 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6 268 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7 269 270 movdqa xmm6,xmm2 ; xmm2=tmp4 271 movdqa xmm0,xmm5 ; xmm5=tmp5 272 paddw xmm6,xmm3 ; xmm6=z3 273 paddw xmm0,xmm1 ; xmm0=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 movdqa xmm7,xmm6 285 movdqa xmm4,xmm6 286 punpcklwd xmm7,xmm0 287 punpckhwd xmm4,xmm0 288 movdqa xmm6,xmm7 289 movdqa xmm0,xmm4 290 pmaddwd xmm7,[GOTOFF(ebx,PW_MF078_F117)] ; xmm7=z3L 291 pmaddwd xmm4,[GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3H 292 pmaddwd xmm6,[GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4L 293 pmaddwd xmm0,[GOTOFF(ebx,PW_F117_F078)] ; xmm0=z4H 294 295 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L 296 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H 297 298 ; (Original) 299 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; 300 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; 301 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; 302 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 303 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; 304 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; 305 ; 306 ; (This implementation) 307 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; 308 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; 309 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); 310 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); 311 ; data7 = tmp4 + z3; data5 = tmp5 + z4; 312 ; data3 = tmp6 + z3; data1 = tmp7 + z4; 313 314 movdqa xmm7,xmm2 315 movdqa xmm4,xmm2 316 punpcklwd xmm7,xmm1 317 punpckhwd xmm4,xmm1 318 movdqa xmm2,xmm7 319 movdqa xmm1,xmm4 320 pmaddwd xmm7,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm7=tmp4L 321 pmaddwd xmm4,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4H 322 pmaddwd xmm2,[GOTOFF(ebx,PW_MF089_F060)] ; xmm2=tmp7L 323 pmaddwd xmm1,[GOTOFF(ebx,PW_MF089_F060)] ; xmm1=tmp7H 324 325 paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L 326 paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H 327 paddd xmm2,xmm6 ; xmm2=data1L 328 paddd xmm1,xmm0 ; xmm1=data1H 329 330 paddd xmm7,[GOTOFF(ebx,PD_DESCALE_P1)] 331 paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P1)] 332 psrad xmm7,DESCALE_P1 333 psrad xmm4,DESCALE_P1 334 paddd xmm2,[GOTOFF(ebx,PD_DESCALE_P1)] 335 paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P1)] 336 psrad xmm2,DESCALE_P1 337 psrad xmm1,DESCALE_P1 338 339 packssdw xmm7,xmm4 ; xmm7=data7 340 packssdw xmm2,xmm1 ; xmm2=data1 341 342 movdqa xmm4,xmm5 343 movdqa xmm1,xmm5 344 punpcklwd xmm4,xmm3 345 punpckhwd xmm1,xmm3 346 movdqa xmm5,xmm4 347 movdqa xmm3,xmm1 348 pmaddwd xmm4,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm4=tmp5L 349 pmaddwd xmm1,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5H 350 pmaddwd xmm5,[GOTOFF(ebx,PW_MF256_F050)] ; xmm5=tmp6L 351 pmaddwd xmm3,[GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6H 352 353 paddd xmm4,xmm6 ; xmm4=data5L 354 paddd xmm1,xmm0 ; xmm1=data5H 355 paddd xmm5, XMMWORD [wk(0)] ; xmm5=data3L 356 paddd xmm3, XMMWORD [wk(1)] ; xmm3=data3H 357 358 paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P1)] 359 paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P1)] 360 psrad xmm4,DESCALE_P1 361 psrad xmm1,DESCALE_P1 362 paddd xmm5,[GOTOFF(ebx,PD_DESCALE_P1)] 363 paddd xmm3,[GOTOFF(ebx,PD_DESCALE_P1)] 364 psrad xmm5,DESCALE_P1 365 psrad xmm3,DESCALE_P1 366 367 packssdw xmm4,xmm1 ; xmm4=data5 368 packssdw xmm5,xmm3 ; xmm5=data3 369 370 ; ---- Pass 2: process columns. 371 372 ; mov edx, POINTER [data(eax)] ; (DCTELEM *) 373 374 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=col0 375 movdqa xmm0, XMMWORD [wk(4)] ; xmm0=col2 376 377 ; xmm6=(00 10 20 30 40 50 60 70), xmm0=(02 12 22 32 42 52 62 72) 378 ; xmm2=(01 11 21 31 41 51 61 71), xmm5=(03 13 23 33 43 53 63 73) 379 380 movdqa xmm1,xmm6 ; transpose coefficients(phase 1) 381 punpcklwd xmm6,xmm2 ; xmm6=(00 01 10 11 20 21 30 31) 382 punpckhwd xmm1,xmm2 ; xmm1=(40 41 50 51 60 61 70 71) 383 movdqa xmm3,xmm0 ; transpose coefficients(phase 1) 384 punpcklwd xmm0,xmm5 ; xmm0=(02 03 12 13 22 23 32 33) 385 punpckhwd xmm3,xmm5 ; xmm3=(42 43 52 53 62 63 72 73) 386 387 movdqa xmm2, XMMWORD [wk(3)] ; xmm2=col4 388 movdqa xmm5, XMMWORD [wk(5)] ; xmm5=col6 389 390 ; xmm2=(04 14 24 34 44 54 64 74), xmm5=(06 16 26 36 46 56 66 76) 391 ; xmm4=(05 15 25 35 45 55 65 75), xmm7=(07 17 27 37 47 57 67 77) 392 393 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=(02 03 12 13 22 23 32 33) 394 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(42 43 52 53 62 63 72 73) 395 396 movdqa xmm0,xmm2 ; transpose coefficients(phase 1) 397 punpcklwd xmm2,xmm4 ; xmm2=(04 05 14 15 24 25 34 35) 398 punpckhwd xmm0,xmm4 ; xmm0=(44 45 54 55 64 65 74 75) 399 movdqa xmm3,xmm5 ; transpose coefficients(phase 1) 400 punpcklwd xmm5,xmm7 ; xmm5=(06 07 16 17 26 27 36 37) 401 punpckhwd xmm3,xmm7 ; xmm3=(46 47 56 57 66 67 76 77) 402 403 movdqa xmm4,xmm2 ; transpose coefficients(phase 2) 404 punpckldq xmm2,xmm5 ; xmm2=(04 05 06 07 14 15 16 17) 405 punpckhdq xmm4,xmm5 ; xmm4=(24 25 26 27 34 35 36 37) 406 movdqa xmm7,xmm0 ; transpose coefficients(phase 2) 407 punpckldq xmm0,xmm3 ; xmm0=(44 45 46 47 54 55 56 57) 408 punpckhdq xmm7,xmm3 ; xmm7=(64 65 66 67 74 75 76 77) 409 410 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=(02 03 12 13 22 23 32 33) 411 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53 62 63 72 73) 412 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=(24 25 26 27 34 35 36 37) 413 movdqa XMMWORD [wk(3)], xmm0 ; wk(3)=(44 45 46 47 54 55 56 57) 414 415 movdqa xmm4,xmm6 ; transpose coefficients(phase 2) 416 punpckldq xmm6,xmm5 ; xmm6=(00 01 02 03 10 11 12 13) 417 punpckhdq xmm4,xmm5 ; xmm4=(20 21 22 23 30 31 32 33) 418 movdqa xmm0,xmm1 ; transpose coefficients(phase 2) 419 punpckldq xmm1,xmm3 ; xmm1=(40 41 42 43 50 51 52 53) 420 punpckhdq xmm0,xmm3 ; xmm0=(60 61 62 63 70 71 72 73) 421 422 movdqa xmm5,xmm6 ; transpose coefficients(phase 3) 423 punpcklqdq xmm6,xmm2 ; xmm6=(00 01 02 03 04 05 06 07)=data0 424 punpckhqdq xmm5,xmm2 ; xmm5=(10 11 12 13 14 15 16 17)=data1 425 movdqa xmm3,xmm0 ; transpose coefficients(phase 3) 426 punpcklqdq xmm0,xmm7 ; xmm0=(60 61 62 63 64 65 66 67)=data6 427 punpckhqdq xmm3,xmm7 ; xmm3=(70 71 72 73 74 75 76 77)=data7 428 429 movdqa xmm2,xmm5 430 movdqa xmm7,xmm6 431 psubw xmm5,xmm0 ; xmm5=data1-data6=tmp6 432 psubw xmm6,xmm3 ; xmm6=data0-data7=tmp7 433 paddw xmm2,xmm0 ; xmm2=data1+data6=tmp1 434 paddw xmm7,xmm3 ; xmm7=data0+data7=tmp0 435 436 movdqa xmm0, XMMWORD [wk(2)] ; xmm0=(24 25 26 27 34 35 36 37) 437 movdqa xmm3, XMMWORD [wk(3)] ; xmm3=(44 45 46 47 54 55 56 57) 438 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=tmp6 439 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 440 441 movdqa xmm5,xmm4 ; transpose coefficients(phase 3) 442 punpcklqdq xmm4,xmm0 ; xmm4=(20 21 22 23 24 25 26 27)=data2 443 punpckhqdq xmm5,xmm0 ; xmm5=(30 31 32 33 34 35 36 37)=data3 444 movdqa xmm6,xmm1 ; transpose coefficients(phase 3) 445 punpcklqdq xmm1,xmm3 ; xmm1=(40 41 42 43 44 45 46 47)=data4 446 punpckhqdq xmm6,xmm3 ; xmm6=(50 51 52 53 54 55 56 57)=data5 447 448 movdqa xmm0,xmm5 449 movdqa xmm3,xmm4 450 paddw xmm5,xmm1 ; xmm5=data3+data4=tmp3 451 paddw xmm4,xmm6 ; xmm4=data2+data5=tmp2 452 psubw xmm0,xmm1 ; xmm0=data3-data4=tmp4 453 psubw xmm3,xmm6 ; xmm3=data2-data5=tmp5 454 455 ; -- Even part 456 457 movdqa xmm1,xmm7 458 movdqa xmm6,xmm2 459 paddw xmm7,xmm5 ; xmm7=tmp10 460 paddw xmm2,xmm4 ; xmm2=tmp11 461 psubw xmm1,xmm5 ; xmm1=tmp13 462 psubw xmm6,xmm4 ; xmm6=tmp12 463 464 movdqa xmm5,xmm7 465 paddw xmm7,xmm2 ; xmm7=tmp10+tmp11 466 psubw xmm5,xmm2 ; xmm5=tmp10-tmp11 467 468 paddw xmm7,[GOTOFF(ebx,PW_DESCALE_P2X)] 469 paddw xmm5,[GOTOFF(ebx,PW_DESCALE_P2X)] 470 psraw xmm7,PASS1_BITS ; xmm7=data0 471 psraw xmm5,PASS1_BITS ; xmm5=data4 472 473 movdqa XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)], xmm7 474 movdqa XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)], xmm5 475 476 ; (Original) 477 ; z1 = (tmp12 + tmp13) * 0.541196100; 478 ; data2 = z1 + tmp13 * 0.765366865; 479 ; data6 = z1 + tmp12 * -1.847759065; 480 ; 481 ; (This implementation) 482 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; 483 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); 484 485 movdqa xmm4,xmm1 ; xmm1=tmp13 486 movdqa xmm2,xmm1 487 punpcklwd xmm4,xmm6 ; xmm6=tmp12 488 punpckhwd xmm2,xmm6 489 movdqa xmm1,xmm4 490 movdqa xmm6,xmm2 491 pmaddwd xmm4,[GOTOFF(ebx,PW_F130_F054)] ; xmm4=data2L 492 pmaddwd xmm2,[GOTOFF(ebx,PW_F130_F054)] ; xmm2=data2H 493 pmaddwd xmm1,[GOTOFF(ebx,PW_F054_MF130)] ; xmm1=data6L 494 pmaddwd xmm6,[GOTOFF(ebx,PW_F054_MF130)] ; xmm6=data6H 495 496 paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P2)] 497 paddd xmm2,[GOTOFF(ebx,PD_DESCALE_P2)] 498 psrad xmm4,DESCALE_P2 499 psrad xmm2,DESCALE_P2 500 paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P2)] 501 paddd xmm6,[GOTOFF(ebx,PD_DESCALE_P2)] 502 psrad xmm1,DESCALE_P2 503 psrad xmm6,DESCALE_P2 504 505 packssdw xmm4,xmm2 ; xmm4=data2 506 packssdw xmm1,xmm6 ; xmm1=data6 507 508 movdqa XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)], xmm4 509 movdqa XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)], xmm1 510 511 ; -- Odd part 512 513 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp6 514 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7 515 516 movdqa xmm2,xmm0 ; xmm0=tmp4 517 movdqa xmm6,xmm3 ; xmm3=tmp5 518 paddw xmm2,xmm7 ; xmm2=z3 519 paddw xmm6,xmm5 ; xmm6=z4 520 521 ; (Original) 522 ; z5 = (z3 + z4) * 1.175875602; 523 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 524 ; z3 += z5; z4 += z5; 525 ; 526 ; (This implementation) 527 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 528 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 529 530 movdqa xmm4,xmm2 531 movdqa xmm1,xmm2 532 punpcklwd xmm4,xmm6 533 punpckhwd xmm1,xmm6 534 movdqa xmm2,xmm4 535 movdqa xmm6,xmm1 536 pmaddwd xmm4,[GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3L 537 pmaddwd xmm1,[GOTOFF(ebx,PW_MF078_F117)] ; xmm1=z3H 538 pmaddwd xmm2,[GOTOFF(ebx,PW_F117_F078)] ; xmm2=z4L 539 pmaddwd xmm6,[GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4H 540 541 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=z3L 542 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=z3H 543 544 ; (Original) 545 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; 546 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; 547 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; 548 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 549 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; 550 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; 551 ; 552 ; (This implementation) 553 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; 554 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; 555 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); 556 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); 557 ; data7 = tmp4 + z3; data5 = tmp5 + z4; 558 ; data3 = tmp6 + z3; data1 = tmp7 + z4; 559 560 movdqa xmm4,xmm0 561 movdqa xmm1,xmm0 562 punpcklwd xmm4,xmm5 563 punpckhwd xmm1,xmm5 564 movdqa xmm0,xmm4 565 movdqa xmm5,xmm1 566 pmaddwd xmm4,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4L 567 pmaddwd xmm1,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm1=tmp4H 568 pmaddwd xmm0,[GOTOFF(ebx,PW_MF089_F060)] ; xmm0=tmp7L 569 pmaddwd xmm5,[GOTOFF(ebx,PW_MF089_F060)] ; xmm5=tmp7H 570 571 paddd xmm4, XMMWORD [wk(0)] ; xmm4=data7L 572 paddd xmm1, XMMWORD [wk(1)] ; xmm1=data7H 573 paddd xmm0,xmm2 ; xmm0=data1L 574 paddd xmm5,xmm6 ; xmm5=data1H 575 576 paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P2)] 577 paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P2)] 578 psrad xmm4,DESCALE_P2 579 psrad xmm1,DESCALE_P2 580 paddd xmm0,[GOTOFF(ebx,PD_DESCALE_P2)] 581 paddd xmm5,[GOTOFF(ebx,PD_DESCALE_P2)] 582 psrad xmm0,DESCALE_P2 583 psrad xmm5,DESCALE_P2 584 585 packssdw xmm4,xmm1 ; xmm4=data7 586 packssdw xmm0,xmm5 ; xmm0=data1 587 588 movdqa XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)], xmm4 589 movdqa XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)], xmm0 590 591 movdqa xmm1,xmm3 592 movdqa xmm5,xmm3 593 punpcklwd xmm1,xmm7 594 punpckhwd xmm5,xmm7 595 movdqa xmm3,xmm1 596 movdqa xmm7,xmm5 597 pmaddwd xmm1,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5L 598 pmaddwd xmm5,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm5=tmp5H 599 pmaddwd xmm3,[GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6L 600 pmaddwd xmm7,[GOTOFF(ebx,PW_MF256_F050)] ; xmm7=tmp6H 601 602 paddd xmm1,xmm2 ; xmm1=data5L 603 paddd xmm5,xmm6 ; xmm5=data5H 604 paddd xmm3, XMMWORD [wk(0)] ; xmm3=data3L 605 paddd xmm7, XMMWORD [wk(1)] ; xmm7=data3H 606 607 paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P2)] 608 paddd xmm5,[GOTOFF(ebx,PD_DESCALE_P2)] 609 psrad xmm1,DESCALE_P2 610 psrad xmm5,DESCALE_P2 611 paddd xmm3,[GOTOFF(ebx,PD_DESCALE_P2)] 612 paddd xmm7,[GOTOFF(ebx,PD_DESCALE_P2)] 613 psrad xmm3,DESCALE_P2 614 psrad xmm7,DESCALE_P2 615 616 packssdw xmm1,xmm5 ; xmm1=data5 617 packssdw xmm3,xmm7 ; xmm3=data3 618 619 movdqa XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)], xmm1 620 movdqa XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)], xmm3 621 622 ; pop edi ; unused 623 ; pop esi ; unused 624 ; pop edx ; need not be preserved 625 ; pop ecx ; unused 626 poppic ebx 627 mov esp,ebp ; esp <- aligned ebp 628 pop esp ; esp <- original ebp 629 pop ebp 630 ret 631 632 ; For some reason, the OS X linker does not honor the request to align the 633 ; segment unless we do this. 634 align 16 635
