1 ; 2 ; jfdctint.asm - accurate integer FDCT (64-bit SSE2) 3 ; 4 ; Copyright 2009 Pierre Ossman <ossman (a] cendio.se> for Cendio AB 5 ; Copyright 2009 D. R. Commander 6 ; 7 ; Based on 8 ; 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), 13 ; can *not* be assembled with Microsoft's MASM or any compatible 14 ; assembler (including Borland's Turbo Assembler). 15 ; NASM is available from http://nasm.sourceforge.net/ or 16 ; http://sourceforge.net/project/showfiles.php?group_id=6208 17 ; 18 ; This file contains a slow-but-accurate integer implementation of the 19 ; forward DCT (Discrete Cosine Transform). The following code is based 20 ; directly on the IJG's original jfdctint.c; see the jfdctint.c for 21 ; more details. 22 ; 23 ; [TAB8] 24 25 %include "jsimdext.inc" 26 %include "jdct.inc" 27 28 ; -------------------------------------------------------------------------- 29 30 %define CONST_BITS 13 31 %define PASS1_BITS 2 32 33 %define DESCALE_P1 (CONST_BITS-PASS1_BITS) 34 %define DESCALE_P2 (CONST_BITS+PASS1_BITS) 35 36 %if CONST_BITS == 13 37 F_0_298 equ 2446 ; FIX(0.298631336) 38 F_0_390 equ 3196 ; FIX(0.390180644) 39 F_0_541 equ 4433 ; FIX(0.541196100) 40 F_0_765 equ 6270 ; FIX(0.765366865) 41 F_0_899 equ 7373 ; FIX(0.899976223) 42 F_1_175 equ 9633 ; FIX(1.175875602) 43 F_1_501 equ 12299 ; FIX(1.501321110) 44 F_1_847 equ 15137 ; FIX(1.847759065) 45 F_1_961 equ 16069 ; FIX(1.961570560) 46 F_2_053 equ 16819 ; FIX(2.053119869) 47 F_2_562 equ 20995 ; FIX(2.562915447) 48 F_3_072 equ 25172 ; FIX(3.072711026) 49 %else 50 ; NASM cannot do compile-time arithmetic on floating-point constants. 51 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) 52 F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336) 53 F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644) 54 F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100) 55 F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865) 56 F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223) 57 F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602) 58 F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110) 59 F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065) 60 F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560) 61 F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869) 62 F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447) 63 F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026) 64 %endif 65 66 ; -------------------------------------------------------------------------- 67 SECTION SEG_CONST 68 69 alignz 16 70 global EXTN(jconst_fdct_islow_sse2) 71 72 EXTN(jconst_fdct_islow_sse2): 73 74 PW_F130_F054 times 4 dw (F_0_541+F_0_765), F_0_541 75 PW_F054_MF130 times 4 dw F_0_541, (F_0_541-F_1_847) 76 PW_MF078_F117 times 4 dw (F_1_175-F_1_961), F_1_175 77 PW_F117_F078 times 4 dw F_1_175, (F_1_175-F_0_390) 78 PW_MF060_MF089 times 4 dw (F_0_298-F_0_899),-F_0_899 79 PW_MF089_F060 times 4 dw -F_0_899, (F_1_501-F_0_899) 80 PW_MF050_MF256 times 4 dw (F_2_053-F_2_562),-F_2_562 81 PW_MF256_F050 times 4 dw -F_2_562, (F_3_072-F_2_562) 82 PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1-1) 83 PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2-1) 84 PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS-1) 85 86 alignz 16 87 88 ; -------------------------------------------------------------------------- 89 SECTION SEG_TEXT 90 BITS 64 91 ; 92 ; Perform the forward DCT on one block of samples. 93 ; 94 ; GLOBAL(void) 95 ; jsimd_fdct_islow_sse2 (DCTELEM * data) 96 ; 97 98 ; r10 = DCTELEM * data 99 100 %define wk(i) rbp-(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 rbp 108 mov rax,rsp ; rax = original rbp 109 sub rsp, byte 4 110 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 111 mov [rsp],rax 112 mov rbp,rsp ; rbp = aligned rbp 113 lea rsp, [wk(0)] 114 collect_args 115 116 ; ---- Pass 1: process rows. 117 118 mov rdx, r10 ; (DCTELEM *) 119 120 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)] 121 movdqa xmm1, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)] 122 movdqa xmm2, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)] 123 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)] 124 125 ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27) 126 ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37) 127 128 movdqa xmm4,xmm0 ; transpose coefficients(phase 1) 129 punpcklwd xmm0,xmm1 ; xmm0=(00 10 01 11 02 12 03 13) 130 punpckhwd xmm4,xmm1 ; xmm4=(04 14 05 15 06 16 07 17) 131 movdqa xmm5,xmm2 ; transpose coefficients(phase 1) 132 punpcklwd xmm2,xmm3 ; xmm2=(20 30 21 31 22 32 23 33) 133 punpckhwd xmm5,xmm3 ; xmm5=(24 34 25 35 26 36 27 37) 134 135 movdqa xmm6, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)] 136 movdqa xmm7, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)] 137 movdqa xmm1, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)] 138 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)] 139 140 ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62) 141 ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63) 142 143 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33) 144 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37) 145 146 movdqa xmm2,xmm6 ; transpose coefficients(phase 1) 147 punpcklwd xmm6,xmm7 ; xmm6=(40 50 41 51 42 52 43 53) 148 punpckhwd xmm2,xmm7 ; xmm2=(44 54 45 55 46 56 47 57) 149 movdqa xmm5,xmm1 ; transpose coefficients(phase 1) 150 punpcklwd xmm1,xmm3 ; xmm1=(60 70 61 71 62 72 63 73) 151 punpckhwd xmm5,xmm3 ; xmm5=(64 74 65 75 66 76 67 77) 152 153 movdqa xmm7,xmm6 ; transpose coefficients(phase 2) 154 punpckldq xmm6,xmm1 ; xmm6=(40 50 60 70 41 51 61 71) 155 punpckhdq xmm7,xmm1 ; xmm7=(42 52 62 72 43 53 63 73) 156 movdqa xmm3,xmm2 ; transpose coefficients(phase 2) 157 punpckldq xmm2,xmm5 ; xmm2=(44 54 64 74 45 55 65 75) 158 punpckhdq xmm3,xmm5 ; xmm3=(46 56 66 76 47 57 67 77) 159 160 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33) 161 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37) 162 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73) 163 movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75) 164 165 movdqa xmm7,xmm0 ; transpose coefficients(phase 2) 166 punpckldq xmm0,xmm1 ; xmm0=(00 10 20 30 01 11 21 31) 167 punpckhdq xmm7,xmm1 ; xmm7=(02 12 22 32 03 13 23 33) 168 movdqa xmm2,xmm4 ; transpose coefficients(phase 2) 169 punpckldq xmm4,xmm5 ; xmm4=(04 14 24 34 05 15 25 35) 170 punpckhdq xmm2,xmm5 ; xmm2=(06 16 26 36 07 17 27 37) 171 172 movdqa xmm1,xmm0 ; transpose coefficients(phase 3) 173 punpcklqdq xmm0,xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0 174 punpckhqdq xmm1,xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1 175 movdqa xmm5,xmm2 ; transpose coefficients(phase 3) 176 punpcklqdq xmm2,xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6 177 punpckhqdq xmm5,xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7 178 179 movdqa xmm6,xmm1 180 movdqa xmm3,xmm0 181 psubw xmm1,xmm2 ; xmm1=data1-data6=tmp6 182 psubw xmm0,xmm5 ; xmm0=data0-data7=tmp7 183 paddw xmm6,xmm2 ; xmm6=data1+data6=tmp1 184 paddw xmm3,xmm5 ; xmm3=data0+data7=tmp0 185 186 movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73) 187 movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75) 188 movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6 189 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7 190 191 movdqa xmm1,xmm7 ; transpose coefficients(phase 3) 192 punpcklqdq xmm7,xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2 193 punpckhqdq xmm1,xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3 194 movdqa xmm0,xmm4 ; transpose coefficients(phase 3) 195 punpcklqdq xmm4,xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4 196 punpckhqdq xmm0,xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5 197 198 movdqa xmm2,xmm1 199 movdqa xmm5,xmm7 200 paddw xmm1,xmm4 ; xmm1=data3+data4=tmp3 201 paddw xmm7,xmm0 ; xmm7=data2+data5=tmp2 202 psubw xmm2,xmm4 ; xmm2=data3-data4=tmp4 203 psubw xmm5,xmm0 ; xmm5=data2-data5=tmp5 204 205 ; -- Even part 206 207 movdqa xmm4,xmm3 208 movdqa xmm0,xmm6 209 paddw xmm3,xmm1 ; xmm3=tmp10 210 paddw xmm6,xmm7 ; xmm6=tmp11 211 psubw xmm4,xmm1 ; xmm4=tmp13 212 psubw xmm0,xmm7 ; xmm0=tmp12 213 214 movdqa xmm1,xmm3 215 paddw xmm3,xmm6 ; xmm3=tmp10+tmp11 216 psubw xmm1,xmm6 ; xmm1=tmp10-tmp11 217 218 psllw xmm3,PASS1_BITS ; xmm3=data0 219 psllw xmm1,PASS1_BITS ; xmm1=data4 220 221 movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0 222 movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4 223 224 ; (Original) 225 ; z1 = (tmp12 + tmp13) * 0.541196100; 226 ; data2 = z1 + tmp13 * 0.765366865; 227 ; data6 = z1 + tmp12 * -1.847759065; 228 ; 229 ; (This implementation) 230 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; 231 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); 232 233 movdqa xmm7,xmm4 ; xmm4=tmp13 234 movdqa xmm6,xmm4 235 punpcklwd xmm7,xmm0 ; xmm0=tmp12 236 punpckhwd xmm6,xmm0 237 movdqa xmm4,xmm7 238 movdqa xmm0,xmm6 239 pmaddwd xmm7,[rel PW_F130_F054] ; xmm7=data2L 240 pmaddwd xmm6,[rel PW_F130_F054] ; xmm6=data2H 241 pmaddwd xmm4,[rel PW_F054_MF130] ; xmm4=data6L 242 pmaddwd xmm0,[rel PW_F054_MF130] ; xmm0=data6H 243 244 paddd xmm7,[rel PD_DESCALE_P1] 245 paddd xmm6,[rel PD_DESCALE_P1] 246 psrad xmm7,DESCALE_P1 247 psrad xmm6,DESCALE_P1 248 paddd xmm4,[rel PD_DESCALE_P1] 249 paddd xmm0,[rel PD_DESCALE_P1] 250 psrad xmm4,DESCALE_P1 251 psrad xmm0,DESCALE_P1 252 253 packssdw xmm7,xmm6 ; xmm7=data2 254 packssdw xmm4,xmm0 ; xmm4=data6 255 256 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2 257 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6 258 259 ; -- Odd part 260 261 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6 262 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7 263 264 movdqa xmm6,xmm2 ; xmm2=tmp4 265 movdqa xmm0,xmm5 ; xmm5=tmp5 266 paddw xmm6,xmm3 ; xmm6=z3 267 paddw xmm0,xmm1 ; xmm0=z4 268 269 ; (Original) 270 ; z5 = (z3 + z4) * 1.175875602; 271 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 272 ; z3 += z5; z4 += z5; 273 ; 274 ; (This implementation) 275 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 276 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 277 278 movdqa xmm7,xmm6 279 movdqa xmm4,xmm6 280 punpcklwd xmm7,xmm0 281 punpckhwd xmm4,xmm0 282 movdqa xmm6,xmm7 283 movdqa xmm0,xmm4 284 pmaddwd xmm7,[rel PW_MF078_F117] ; xmm7=z3L 285 pmaddwd xmm4,[rel PW_MF078_F117] ; xmm4=z3H 286 pmaddwd xmm6,[rel PW_F117_F078] ; xmm6=z4L 287 pmaddwd xmm0,[rel PW_F117_F078] ; xmm0=z4H 288 289 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L 290 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H 291 292 ; (Original) 293 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; 294 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; 295 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; 296 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 297 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; 298 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; 299 ; 300 ; (This implementation) 301 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; 302 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; 303 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); 304 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); 305 ; data7 = tmp4 + z3; data5 = tmp5 + z4; 306 ; data3 = tmp6 + z3; data1 = tmp7 + z4; 307 308 movdqa xmm7,xmm2 309 movdqa xmm4,xmm2 310 punpcklwd xmm7,xmm1 311 punpckhwd xmm4,xmm1 312 movdqa xmm2,xmm7 313 movdqa xmm1,xmm4 314 pmaddwd xmm7,[rel PW_MF060_MF089] ; xmm7=tmp4L 315 pmaddwd xmm4,[rel PW_MF060_MF089] ; xmm4=tmp4H 316 pmaddwd xmm2,[rel PW_MF089_F060] ; xmm2=tmp7L 317 pmaddwd xmm1,[rel PW_MF089_F060] ; xmm1=tmp7H 318 319 paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L 320 paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H 321 paddd xmm2,xmm6 ; xmm2=data1L 322 paddd xmm1,xmm0 ; xmm1=data1H 323 324 paddd xmm7,[rel PD_DESCALE_P1] 325 paddd xmm4,[rel PD_DESCALE_P1] 326 psrad xmm7,DESCALE_P1 327 psrad xmm4,DESCALE_P1 328 paddd xmm2,[rel PD_DESCALE_P1] 329 paddd xmm1,[rel PD_DESCALE_P1] 330 psrad xmm2,DESCALE_P1 331 psrad xmm1,DESCALE_P1 332 333 packssdw xmm7,xmm4 ; xmm7=data7 334 packssdw xmm2,xmm1 ; xmm2=data1 335 336 movdqa xmm4,xmm5 337 movdqa xmm1,xmm5 338 punpcklwd xmm4,xmm3 339 punpckhwd xmm1,xmm3 340 movdqa xmm5,xmm4 341 movdqa xmm3,xmm1 342 pmaddwd xmm4,[rel PW_MF050_MF256] ; xmm4=tmp5L 343 pmaddwd xmm1,[rel PW_MF050_MF256] ; xmm1=tmp5H 344 pmaddwd xmm5,[rel PW_MF256_F050] ; xmm5=tmp6L 345 pmaddwd xmm3,[rel PW_MF256_F050] ; xmm3=tmp6H 346 347 paddd xmm4,xmm6 ; xmm4=data5L 348 paddd xmm1,xmm0 ; xmm1=data5H 349 paddd xmm5, XMMWORD [wk(0)] ; xmm5=data3L 350 paddd xmm3, XMMWORD [wk(1)] ; xmm3=data3H 351 352 paddd xmm4,[rel PD_DESCALE_P1] 353 paddd xmm1,[rel PD_DESCALE_P1] 354 psrad xmm4,DESCALE_P1 355 psrad xmm1,DESCALE_P1 356 paddd xmm5,[rel PD_DESCALE_P1] 357 paddd xmm3,[rel PD_DESCALE_P1] 358 psrad xmm5,DESCALE_P1 359 psrad xmm3,DESCALE_P1 360 361 packssdw xmm4,xmm1 ; xmm4=data5 362 packssdw xmm5,xmm3 ; xmm5=data3 363 364 ; ---- Pass 2: process columns. 365 366 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=col0 367 movdqa xmm0, XMMWORD [wk(4)] ; xmm0=col2 368 369 ; xmm6=(00 10 20 30 40 50 60 70), xmm0=(02 12 22 32 42 52 62 72) 370 ; xmm2=(01 11 21 31 41 51 61 71), xmm5=(03 13 23 33 43 53 63 73) 371 372 movdqa xmm1,xmm6 ; transpose coefficients(phase 1) 373 punpcklwd xmm6,xmm2 ; xmm6=(00 01 10 11 20 21 30 31) 374 punpckhwd xmm1,xmm2 ; xmm1=(40 41 50 51 60 61 70 71) 375 movdqa xmm3,xmm0 ; transpose coefficients(phase 1) 376 punpcklwd xmm0,xmm5 ; xmm0=(02 03 12 13 22 23 32 33) 377 punpckhwd xmm3,xmm5 ; xmm3=(42 43 52 53 62 63 72 73) 378 379 movdqa xmm2, XMMWORD [wk(3)] ; xmm2=col4 380 movdqa xmm5, XMMWORD [wk(5)] ; xmm5=col6 381 382 ; xmm2=(04 14 24 34 44 54 64 74), xmm5=(06 16 26 36 46 56 66 76) 383 ; xmm4=(05 15 25 35 45 55 65 75), xmm7=(07 17 27 37 47 57 67 77) 384 385 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=(02 03 12 13 22 23 32 33) 386 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(42 43 52 53 62 63 72 73) 387 388 movdqa xmm0,xmm2 ; transpose coefficients(phase 1) 389 punpcklwd xmm2,xmm4 ; xmm2=(04 05 14 15 24 25 34 35) 390 punpckhwd xmm0,xmm4 ; xmm0=(44 45 54 55 64 65 74 75) 391 movdqa xmm3,xmm5 ; transpose coefficients(phase 1) 392 punpcklwd xmm5,xmm7 ; xmm5=(06 07 16 17 26 27 36 37) 393 punpckhwd xmm3,xmm7 ; xmm3=(46 47 56 57 66 67 76 77) 394 395 movdqa xmm4,xmm2 ; transpose coefficients(phase 2) 396 punpckldq xmm2,xmm5 ; xmm2=(04 05 06 07 14 15 16 17) 397 punpckhdq xmm4,xmm5 ; xmm4=(24 25 26 27 34 35 36 37) 398 movdqa xmm7,xmm0 ; transpose coefficients(phase 2) 399 punpckldq xmm0,xmm3 ; xmm0=(44 45 46 47 54 55 56 57) 400 punpckhdq xmm7,xmm3 ; xmm7=(64 65 66 67 74 75 76 77) 401 402 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=(02 03 12 13 22 23 32 33) 403 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53 62 63 72 73) 404 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=(24 25 26 27 34 35 36 37) 405 movdqa XMMWORD [wk(3)], xmm0 ; wk(3)=(44 45 46 47 54 55 56 57) 406 407 movdqa xmm4,xmm6 ; transpose coefficients(phase 2) 408 punpckldq xmm6,xmm5 ; xmm6=(00 01 02 03 10 11 12 13) 409 punpckhdq xmm4,xmm5 ; xmm4=(20 21 22 23 30 31 32 33) 410 movdqa xmm0,xmm1 ; transpose coefficients(phase 2) 411 punpckldq xmm1,xmm3 ; xmm1=(40 41 42 43 50 51 52 53) 412 punpckhdq xmm0,xmm3 ; xmm0=(60 61 62 63 70 71 72 73) 413 414 movdqa xmm5,xmm6 ; transpose coefficients(phase 3) 415 punpcklqdq xmm6,xmm2 ; xmm6=(00 01 02 03 04 05 06 07)=data0 416 punpckhqdq xmm5,xmm2 ; xmm5=(10 11 12 13 14 15 16 17)=data1 417 movdqa xmm3,xmm0 ; transpose coefficients(phase 3) 418 punpcklqdq xmm0,xmm7 ; xmm0=(60 61 62 63 64 65 66 67)=data6 419 punpckhqdq xmm3,xmm7 ; xmm3=(70 71 72 73 74 75 76 77)=data7 420 421 movdqa xmm2,xmm5 422 movdqa xmm7,xmm6 423 psubw xmm5,xmm0 ; xmm5=data1-data6=tmp6 424 psubw xmm6,xmm3 ; xmm6=data0-data7=tmp7 425 paddw xmm2,xmm0 ; xmm2=data1+data6=tmp1 426 paddw xmm7,xmm3 ; xmm7=data0+data7=tmp0 427 428 movdqa xmm0, XMMWORD [wk(2)] ; xmm0=(24 25 26 27 34 35 36 37) 429 movdqa xmm3, XMMWORD [wk(3)] ; xmm3=(44 45 46 47 54 55 56 57) 430 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=tmp6 431 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 432 433 movdqa xmm5,xmm4 ; transpose coefficients(phase 3) 434 punpcklqdq xmm4,xmm0 ; xmm4=(20 21 22 23 24 25 26 27)=data2 435 punpckhqdq xmm5,xmm0 ; xmm5=(30 31 32 33 34 35 36 37)=data3 436 movdqa xmm6,xmm1 ; transpose coefficients(phase 3) 437 punpcklqdq xmm1,xmm3 ; xmm1=(40 41 42 43 44 45 46 47)=data4 438 punpckhqdq xmm6,xmm3 ; xmm6=(50 51 52 53 54 55 56 57)=data5 439 440 movdqa xmm0,xmm5 441 movdqa xmm3,xmm4 442 paddw xmm5,xmm1 ; xmm5=data3+data4=tmp3 443 paddw xmm4,xmm6 ; xmm4=data2+data5=tmp2 444 psubw xmm0,xmm1 ; xmm0=data3-data4=tmp4 445 psubw xmm3,xmm6 ; xmm3=data2-data5=tmp5 446 447 ; -- Even part 448 449 movdqa xmm1,xmm7 450 movdqa xmm6,xmm2 451 paddw xmm7,xmm5 ; xmm7=tmp10 452 paddw xmm2,xmm4 ; xmm2=tmp11 453 psubw xmm1,xmm5 ; xmm1=tmp13 454 psubw xmm6,xmm4 ; xmm6=tmp12 455 456 movdqa xmm5,xmm7 457 paddw xmm7,xmm2 ; xmm7=tmp10+tmp11 458 psubw xmm5,xmm2 ; xmm5=tmp10-tmp11 459 460 paddw xmm7,[rel PW_DESCALE_P2X] 461 paddw xmm5,[rel PW_DESCALE_P2X] 462 psraw xmm7,PASS1_BITS ; xmm7=data0 463 psraw xmm5,PASS1_BITS ; xmm5=data4 464 465 movdqa XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)], xmm7 466 movdqa XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)], xmm5 467 468 ; (Original) 469 ; z1 = (tmp12 + tmp13) * 0.541196100; 470 ; data2 = z1 + tmp13 * 0.765366865; 471 ; data6 = z1 + tmp12 * -1.847759065; 472 ; 473 ; (This implementation) 474 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; 475 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); 476 477 movdqa xmm4,xmm1 ; xmm1=tmp13 478 movdqa xmm2,xmm1 479 punpcklwd xmm4,xmm6 ; xmm6=tmp12 480 punpckhwd xmm2,xmm6 481 movdqa xmm1,xmm4 482 movdqa xmm6,xmm2 483 pmaddwd xmm4,[rel PW_F130_F054] ; xmm4=data2L 484 pmaddwd xmm2,[rel PW_F130_F054] ; xmm2=data2H 485 pmaddwd xmm1,[rel PW_F054_MF130] ; xmm1=data6L 486 pmaddwd xmm6,[rel PW_F054_MF130] ; xmm6=data6H 487 488 paddd xmm4,[rel PD_DESCALE_P2] 489 paddd xmm2,[rel PD_DESCALE_P2] 490 psrad xmm4,DESCALE_P2 491 psrad xmm2,DESCALE_P2 492 paddd xmm1,[rel PD_DESCALE_P2] 493 paddd xmm6,[rel PD_DESCALE_P2] 494 psrad xmm1,DESCALE_P2 495 psrad xmm6,DESCALE_P2 496 497 packssdw xmm4,xmm2 ; xmm4=data2 498 packssdw xmm1,xmm6 ; xmm1=data6 499 500 movdqa XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)], xmm4 501 movdqa XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)], xmm1 502 503 ; -- Odd part 504 505 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp6 506 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7 507 508 movdqa xmm2,xmm0 ; xmm0=tmp4 509 movdqa xmm6,xmm3 ; xmm3=tmp5 510 paddw xmm2,xmm7 ; xmm2=z3 511 paddw xmm6,xmm5 ; xmm6=z4 512 513 ; (Original) 514 ; z5 = (z3 + z4) * 1.175875602; 515 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 516 ; z3 += z5; z4 += z5; 517 ; 518 ; (This implementation) 519 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 520 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 521 522 movdqa xmm4,xmm2 523 movdqa xmm1,xmm2 524 punpcklwd xmm4,xmm6 525 punpckhwd xmm1,xmm6 526 movdqa xmm2,xmm4 527 movdqa xmm6,xmm1 528 pmaddwd xmm4,[rel PW_MF078_F117] ; xmm4=z3L 529 pmaddwd xmm1,[rel PW_MF078_F117] ; xmm1=z3H 530 pmaddwd xmm2,[rel PW_F117_F078] ; xmm2=z4L 531 pmaddwd xmm6,[rel PW_F117_F078] ; xmm6=z4H 532 533 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=z3L 534 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=z3H 535 536 ; (Original) 537 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; 538 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; 539 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; 540 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 541 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; 542 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; 543 ; 544 ; (This implementation) 545 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; 546 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; 547 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); 548 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); 549 ; data7 = tmp4 + z3; data5 = tmp5 + z4; 550 ; data3 = tmp6 + z3; data1 = tmp7 + z4; 551 552 movdqa xmm4,xmm0 553 movdqa xmm1,xmm0 554 punpcklwd xmm4,xmm5 555 punpckhwd xmm1,xmm5 556 movdqa xmm0,xmm4 557 movdqa xmm5,xmm1 558 pmaddwd xmm4,[rel PW_MF060_MF089] ; xmm4=tmp4L 559 pmaddwd xmm1,[rel PW_MF060_MF089] ; xmm1=tmp4H 560 pmaddwd xmm0,[rel PW_MF089_F060] ; xmm0=tmp7L 561 pmaddwd xmm5,[rel PW_MF089_F060] ; xmm5=tmp7H 562 563 paddd xmm4, XMMWORD [wk(0)] ; xmm4=data7L 564 paddd xmm1, XMMWORD [wk(1)] ; xmm1=data7H 565 paddd xmm0,xmm2 ; xmm0=data1L 566 paddd xmm5,xmm6 ; xmm5=data1H 567 568 paddd xmm4,[rel PD_DESCALE_P2] 569 paddd xmm1,[rel PD_DESCALE_P2] 570 psrad xmm4,DESCALE_P2 571 psrad xmm1,DESCALE_P2 572 paddd xmm0,[rel PD_DESCALE_P2] 573 paddd xmm5,[rel PD_DESCALE_P2] 574 psrad xmm0,DESCALE_P2 575 psrad xmm5,DESCALE_P2 576 577 packssdw xmm4,xmm1 ; xmm4=data7 578 packssdw xmm0,xmm5 ; xmm0=data1 579 580 movdqa XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)], xmm4 581 movdqa XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)], xmm0 582 583 movdqa xmm1,xmm3 584 movdqa xmm5,xmm3 585 punpcklwd xmm1,xmm7 586 punpckhwd xmm5,xmm7 587 movdqa xmm3,xmm1 588 movdqa xmm7,xmm5 589 pmaddwd xmm1,[rel PW_MF050_MF256] ; xmm1=tmp5L 590 pmaddwd xmm5,[rel PW_MF050_MF256] ; xmm5=tmp5H 591 pmaddwd xmm3,[rel PW_MF256_F050] ; xmm3=tmp6L 592 pmaddwd xmm7,[rel PW_MF256_F050] ; xmm7=tmp6H 593 594 paddd xmm1,xmm2 ; xmm1=data5L 595 paddd xmm5,xmm6 ; xmm5=data5H 596 paddd xmm3, XMMWORD [wk(0)] ; xmm3=data3L 597 paddd xmm7, XMMWORD [wk(1)] ; xmm7=data3H 598 599 paddd xmm1,[rel PD_DESCALE_P2] 600 paddd xmm5,[rel PD_DESCALE_P2] 601 psrad xmm1,DESCALE_P2 602 psrad xmm5,DESCALE_P2 603 paddd xmm3,[rel PD_DESCALE_P2] 604 paddd xmm7,[rel PD_DESCALE_P2] 605 psrad xmm3,DESCALE_P2 606 psrad xmm7,DESCALE_P2 607 608 packssdw xmm1,xmm5 ; xmm1=data5 609 packssdw xmm3,xmm7 ; xmm3=data3 610 611 movdqa XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)], xmm1 612 movdqa XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)], xmm3 613 614 uncollect_args 615 mov rsp,rbp ; rsp <- aligned rbp 616 pop rsp ; rsp <- original rbp 617 pop rbp 618 ret 619 620 ; For some reason, the OS X linker does not honor the request to align the 621 ; segment unless we do this. 622 align 16 623
