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| 1 : | edgomez | 1.1 | ;/**************************************************************************** |
| 2 : | ; * | ||
| 3 : | ; * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | ; * - MMX and XMM forward discrete cosine transform - | ||
| 5 : | ; * | ||
| 6 : | ; * Copyright(C) 2002 Pascal Massimino <skal@planet-d.net> | ||
| 7 : | ; * 2004 Andre Werthmann <wertmann@aei.mpg.de> | ||
| 8 : | ; * | ||
| 9 : | ; * This program is free software; you can redistribute it and/or modify it | ||
| 10 : | ; * under the terms of the GNU General Public License as published by | ||
| 11 : | ; * the Free Software Foundation; either version 2 of the License, or | ||
| 12 : | ; * (at your option) any later version. | ||
| 13 : | ; * | ||
| 14 : | ; * This program is distributed in the hope that it will be useful, | ||
| 15 : | ; * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 16 : | ; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 17 : | ; * GNU General Public License for more details. | ||
| 18 : | ; * | ||
| 19 : | ; * You should have received a copy of the GNU General Public License | ||
| 20 : | ; * along with this program; if not, write to the Free Software | ||
| 21 : | ; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 22 : | ; * | ||
| 23 : | ; * $Id$ | ||
| 24 : | ; * | ||
| 25 : | ; ***************************************************************************/ | ||
| 26 : | |||
| 27 : | BITS 64 | ||
| 28 : | |||
| 29 : | %macro cglobal 1 | ||
| 30 : | %ifdef PREFIX | ||
| 31 : | %ifdef MARK_FUNCS | ||
| 32 : | global _%1:function %1.endfunc-%1 | ||
| 33 : | %define %1 _%1:function %1.endfunc-%1 | ||
| 34 : | %else | ||
| 35 : | global _%1 | ||
| 36 : | %define %1 _%1 | ||
| 37 : | %endif | ||
| 38 : | %else | ||
| 39 : | %ifdef MARK_FUNCS | ||
| 40 : | global %1:function %1.endfunc-%1 | ||
| 41 : | %else | ||
| 42 : | global %1 | ||
| 43 : | %endif | ||
| 44 : | %endif | ||
| 45 : | %endmacro | ||
| 46 : | |||
| 47 : | ;;; Define this if you want an unrolled version of the code | ||
| 48 : | %define UNROLLED_LOOP | ||
| 49 : | |||
| 50 : | ;============================================================================= | ||
| 51 : | ; | ||
| 52 : | ; Vertical pass is an implementation of the scheme: | ||
| 53 : | ; Loeffler C., Ligtenberg A., and Moschytz C.S.: | ||
| 54 : | ; Practical Fast 1D DCT Algorithm with Eleven Multiplications, | ||
| 55 : | ; Proc. ICASSP 1989, 988-991. | ||
| 56 : | ; | ||
| 57 : | ; Horizontal pass is a double 4x4 vector/matrix multiplication, | ||
| 58 : | ; (see also Intel's Application Note 922: | ||
| 59 : | ; http://developer.intel.com/vtune/cbts/strmsimd/922down.htm | ||
| 60 : | ; Copyright (C) 1999 Intel Corporation) | ||
| 61 : | ; | ||
| 62 : | ; Notes: | ||
| 63 : | ; * tan(3pi/16) is greater than 0.5, and would use the | ||
| 64 : | ; sign bit when turned into 16b fixed-point precision. So, | ||
| 65 : | ; we use the trick: x*tan3 = x*(tan3-1)+x | ||
| 66 : | ; | ||
| 67 : | ; * There's only one SSE-specific instruction (pshufw). | ||
| 68 : | ; Porting to SSE2 also seems straightforward. | ||
| 69 : | ; | ||
| 70 : | ; * There's still 1 or 2 ticks to save in fLLM_PASS, but | ||
| 71 : | ; I prefer having a readable code, instead of a tightly | ||
| 72 : | ; scheduled one... | ||
| 73 : | ; | ||
| 74 : | ; * Quantization stage (as well as pre-transposition for the | ||
| 75 : | ; idct way back) can be included in the fTab* constants | ||
| 76 : | ; (with induced loss of precision, somehow) | ||
| 77 : | ; | ||
| 78 : | ; * Some more details at: http://skal.planet-d.net/coding/dct.html | ||
| 79 : | ; | ||
| 80 : | ;============================================================================= | ||
| 81 : | ; | ||
| 82 : | ; idct-like IEEE errors: | ||
| 83 : | ; | ||
| 84 : | ; ========================= | ||
| 85 : | ; Peak error: 1.0000 | ||
| 86 : | ; Peak MSE: 0.0365 | ||
| 87 : | ; Overall MSE: 0.0201 | ||
| 88 : | ; Peak ME: 0.0265 | ||
| 89 : | ; Overall ME: 0.0006 | ||
| 90 : | ; | ||
| 91 : | ; == Mean square errors == | ||
| 92 : | ; 0.000 0.001 0.001 0.002 0.000 0.002 0.001 0.000 [0.001] | ||
| 93 : | ; 0.035 0.029 0.032 0.032 0.031 0.032 0.034 0.035 [0.032] | ||
| 94 : | ; 0.026 0.028 0.027 0.027 0.025 0.028 0.028 0.025 [0.027] | ||
| 95 : | ; 0.037 0.032 0.031 0.030 0.028 0.029 0.026 0.031 [0.030] | ||
| 96 : | ; 0.000 0.001 0.001 0.002 0.000 0.002 0.001 0.001 [0.001] | ||
| 97 : | ; 0.025 0.024 0.022 0.022 0.022 0.022 0.023 0.023 [0.023] | ||
| 98 : | ; 0.026 0.028 0.025 0.028 0.030 0.025 0.026 0.027 [0.027] | ||
| 99 : | ; 0.021 0.020 0.020 0.022 0.020 0.022 0.017 0.019 [0.020] | ||
| 100 : | ; | ||
| 101 : | ; == Abs Mean errors == | ||
| 102 : | ; 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 [0.000] | ||
| 103 : | ; 0.020 0.001 0.003 0.003 0.000 0.004 0.002 0.003 [0.002] | ||
| 104 : | ; 0.000 0.001 0.001 0.001 0.001 0.004 0.000 0.000 [0.000] | ||
| 105 : | ; 0.027 0.001 0.000 0.002 0.002 0.002 0.001 0.000 [0.003] | ||
| 106 : | ; 0.000 0.000 0.000 0.000 0.000 0.001 0.000 0.001 [-0.000] | ||
| 107 : | ; 0.001 0.003 0.001 0.001 0.002 0.001 0.000 0.000 [-0.000] | ||
| 108 : | ; 0.000 0.002 0.002 0.001 0.001 0.002 0.001 0.000 [-0.000] | ||
| 109 : | ; 0.000 0.002 0.001 0.002 0.001 0.002 0.001 0.001 [-0.000] | ||
| 110 : | ; | ||
| 111 : | ;============================================================================= | ||
| 112 : | |||
| 113 : | ;============================================================================= | ||
| 114 : | ; Read only data | ||
| 115 : | ;============================================================================= | ||
| 116 : | |||
| 117 : | %ifdef FORMAT_COFF | ||
| 118 : | SECTION .rodata | ||
| 119 : | %else | ||
| 120 : | SECTION .rodata align=16 | ||
| 121 : | %endif | ||
| 122 : | |||
| 123 : | ALIGN 16 | ||
| 124 : | tan1: | ||
| 125 : | dw 0x32ec,0x32ec,0x32ec,0x32ec ; tan( pi/16) | ||
| 126 : | tan2: | ||
| 127 : | dw 0x6a0a,0x6a0a,0x6a0a,0x6a0a ; tan(2pi/16) (=sqrt(2)-1) | ||
| 128 : | tan3: | ||
| 129 : | dw 0xab0e,0xab0e,0xab0e,0xab0e ; tan(3pi/16)-1 | ||
| 130 : | sqrt2: | ||
| 131 : | dw 0x5a82,0x5a82,0x5a82,0x5a82 ; 0.5/sqrt(2) | ||
| 132 : | |||
| 133 : | ALIGN 16 | ||
| 134 : | fdct_table: | ||
| 135 : | ;fTab1: | ||
| 136 : | dw 0x4000, 0x4000, 0x58c5, 0x4b42 | ||
| 137 : | dw 0x4000, 0x4000, 0x3249, 0x11a8 | ||
| 138 : | dw 0x539f, 0x22a3, 0x4b42, 0xee58 | ||
| 139 : | dw 0xdd5d, 0xac61, 0xa73b, 0xcdb7 | ||
| 140 : | dw 0x4000, 0xc000, 0x3249, 0xa73b | ||
| 141 : | dw 0xc000, 0x4000, 0x11a8, 0x4b42 | ||
| 142 : | dw 0x22a3, 0xac61, 0x11a8, 0xcdb7 | ||
| 143 : | dw 0x539f, 0xdd5d, 0x4b42, 0xa73b | ||
| 144 : | |||
| 145 : | ;fTab2: | ||
| 146 : | dw 0x58c5, 0x58c5, 0x7b21, 0x6862 | ||
| 147 : | dw 0x58c5, 0x58c5, 0x45bf, 0x187e | ||
| 148 : | dw 0x73fc, 0x300b, 0x6862, 0xe782 | ||
| 149 : | dw 0xcff5, 0x8c04, 0x84df, 0xba41 | ||
| 150 : | dw 0x58c5, 0xa73b, 0x45bf, 0x84df | ||
| 151 : | dw 0xa73b, 0x58c5, 0x187e, 0x6862 | ||
| 152 : | dw 0x300b, 0x8c04, 0x187e, 0xba41 | ||
| 153 : | dw 0x73fc, 0xcff5, 0x6862, 0x84df | ||
| 154 : | |||
| 155 : | ;fTab3: | ||
| 156 : | dw 0x539f, 0x539f, 0x73fc, 0x6254 | ||
| 157 : | dw 0x539f, 0x539f, 0x41b3, 0x1712 | ||
| 158 : | dw 0x6d41, 0x2d41, 0x6254, 0xe8ee | ||
| 159 : | dw 0xd2bf, 0x92bf, 0x8c04, 0xbe4d | ||
| 160 : | dw 0x539f, 0xac61, 0x41b3, 0x8c04 | ||
| 161 : | dw 0xac61, 0x539f, 0x1712, 0x6254 | ||
| 162 : | dw 0x2d41, 0x92bf, 0x1712, 0xbe4d | ||
| 163 : | dw 0x6d41, 0xd2bf, 0x6254, 0x8c04 | ||
| 164 : | |||
| 165 : | ;fTab4: | ||
| 166 : | dw 0x4b42, 0x4b42, 0x6862, 0x587e | ||
| 167 : | dw 0x4b42, 0x4b42, 0x3b21, 0x14c3 | ||
| 168 : | dw 0x6254, 0x28ba, 0x587e, 0xeb3d | ||
| 169 : | dw 0xd746, 0x9dac, 0x979e, 0xc4df | ||
| 170 : | dw 0x4b42, 0xb4be, 0x3b21, 0x979e | ||
| 171 : | dw 0xb4be, 0x4b42, 0x14c3, 0x587e | ||
| 172 : | dw 0x28ba, 0x9dac, 0x14c3, 0xc4df | ||
| 173 : | dw 0x6254, 0xd746, 0x587e, 0x979e | ||
| 174 : | |||
| 175 : | ;fTab1: | ||
| 176 : | dw 0x4000, 0x4000, 0x58c5, 0x4b42 | ||
| 177 : | dw 0x4000, 0x4000, 0x3249, 0x11a8 | ||
| 178 : | dw 0x539f, 0x22a3, 0x4b42, 0xee58 | ||
| 179 : | dw 0xdd5d, 0xac61, 0xa73b, 0xcdb7 | ||
| 180 : | dw 0x4000, 0xc000, 0x3249, 0xa73b | ||
| 181 : | dw 0xc000, 0x4000, 0x11a8, 0x4b42 | ||
| 182 : | dw 0x22a3, 0xac61, 0x11a8, 0xcdb7 | ||
| 183 : | dw 0x539f, 0xdd5d, 0x4b42, 0xa73b | ||
| 184 : | |||
| 185 : | ;fTab4: | ||
| 186 : | dw 0x4b42, 0x4b42, 0x6862, 0x587e | ||
| 187 : | dw 0x4b42, 0x4b42, 0x3b21, 0x14c3 | ||
| 188 : | dw 0x6254, 0x28ba, 0x587e, 0xeb3d | ||
| 189 : | dw 0xd746, 0x9dac, 0x979e, 0xc4df | ||
| 190 : | dw 0x4b42, 0xb4be, 0x3b21, 0x979e | ||
| 191 : | dw 0xb4be, 0x4b42, 0x14c3, 0x587e | ||
| 192 : | dw 0x28ba, 0x9dac, 0x14c3, 0xc4df | ||
| 193 : | dw 0x6254, 0xd746, 0x587e, 0x979e | ||
| 194 : | |||
| 195 : | ;fTab3: | ||
| 196 : | dw 0x539f, 0x539f, 0x73fc, 0x6254 | ||
| 197 : | dw 0x539f, 0x539f, 0x41b3, 0x1712 | ||
| 198 : | dw 0x6d41, 0x2d41, 0x6254, 0xe8ee | ||
| 199 : | dw 0xd2bf, 0x92bf, 0x8c04, 0xbe4d | ||
| 200 : | dw 0x539f, 0xac61, 0x41b3, 0x8c04 | ||
| 201 : | dw 0xac61, 0x539f, 0x1712, 0x6254 | ||
| 202 : | dw 0x2d41, 0x92bf, 0x1712, 0xbe4d | ||
| 203 : | dw 0x6d41, 0xd2bf, 0x6254, 0x8c04 | ||
| 204 : | |||
| 205 : | ;fTab2: | ||
| 206 : | dw 0x58c5, 0x58c5, 0x7b21, 0x6862 | ||
| 207 : | dw 0x58c5, 0x58c5, 0x45bf, 0x187e | ||
| 208 : | dw 0x73fc, 0x300b, 0x6862, 0xe782 | ||
| 209 : | dw 0xcff5, 0x8c04, 0x84df, 0xba41 | ||
| 210 : | dw 0x58c5, 0xa73b, 0x45bf, 0x84df | ||
| 211 : | dw 0xa73b, 0x58c5, 0x187e, 0x6862 | ||
| 212 : | dw 0x300b, 0x8c04, 0x187e, 0xba41 | ||
| 213 : | dw 0x73fc, 0xcff5, 0x6862, 0x84df | ||
| 214 : | |||
| 215 : | ALIGN 16 | ||
| 216 : | fdct_rounding_1: | ||
| 217 : | dw 6, 8, 8, 8 | ||
| 218 : | dw 10, 8, 8, 8 | ||
| 219 : | dw 8, 8, 8, 8 | ||
| 220 : | dw 8, 8, 8, 8 | ||
| 221 : | dw 6, 8, 8, 8 | ||
| 222 : | dw 8, 8, 8, 8 | ||
| 223 : | dw 8, 8, 8, 8 | ||
| 224 : | dw 8, 8, 8, 8 | ||
| 225 : | |||
| 226 : | ALIGN 16 | ||
| 227 : | fdct_rounding_2: | ||
| 228 : | dw 6, 8, 8, 8 | ||
| 229 : | dw 8, 8, 8, 8 | ||
| 230 : | dw 8, 8, 8, 8 | ||
| 231 : | dw 8, 8, 8, 8 | ||
| 232 : | dw 6, 8, 8, 8 | ||
| 233 : | dw 8, 8, 8, 8 | ||
| 234 : | dw 8, 8, 8, 8 | ||
| 235 : | dw 8, 8, 8, 8 | ||
| 236 : | |||
| 237 : | ALIGN 16 | ||
| 238 : | MMX_One: | ||
| 239 : | dw 1, 1, 1, 1 | ||
| 240 : | |||
| 241 : | ;============================================================================= | ||
| 242 : | ; Helper Macros for real code | ||
| 243 : | ;============================================================================= | ||
| 244 : | |||
| 245 : | ;----------------------------------------------------------------------------- | ||
| 246 : | ; FDCT LLM vertical pass (~39c) | ||
| 247 : | ; %1=dst, %2=src, %3:Shift | ||
| 248 : | ;----------------------------------------------------------------------------- | ||
| 249 : | |||
| 250 : | %macro fLLM_PASS 3 | ||
| 251 : | movq mm0, [%2+0*16] ; In0 | ||
| 252 : | movq mm2, [%2+2*16] ; In2 | ||
| 253 : | movq mm3, mm0 | ||
| 254 : | movq mm4, mm2 | ||
| 255 : | movq mm7, [%2+7*16] ; In7 | ||
| 256 : | movq mm5, [%2+5*16] ; In5 | ||
| 257 : | |||
| 258 : | psubsw mm0, mm7 ; t7 = In0-In7 | ||
| 259 : | paddsw mm7, mm3 ; t0 = In0+In7 | ||
| 260 : | psubsw mm2, mm5 ; t5 = In2-In5 | ||
| 261 : | paddsw mm5, mm4 ; t2 = In2+In5 | ||
| 262 : | |||
| 263 : | movq mm3, [%2+3*16] ; In3 | ||
| 264 : | movq mm4, [%2+4*16] ; In4 | ||
| 265 : | movq mm1, mm3 | ||
| 266 : | psubsw mm3, mm4 ; t4 = In3-In4 | ||
| 267 : | paddsw mm4, mm1 ; t3 = In3+In4 | ||
| 268 : | movq mm6, [%2+6*16] ; In6 | ||
| 269 : | movq mm1, [%2+1*16] ; In1 | ||
| 270 : | psubsw mm1, mm6 ; t6 = In1-In6 | ||
| 271 : | paddsw mm6, [%2+1*16] ; t1 = In1+In6 | ||
| 272 : | |||
| 273 : | psubsw mm7, mm4 ; tm03 = t0-t3 | ||
| 274 : | psubsw mm6, mm5 ; tm12 = t1-t2 | ||
| 275 : | paddsw mm4, mm4 ; 2.t3 | ||
| 276 : | paddsw mm5, mm5 ; 2.t2 | ||
| 277 : | paddsw mm4, mm7 ; tp03 = t0+t3 | ||
| 278 : | paddsw mm5, mm6 ; tp12 = t1+t2 | ||
| 279 : | |||
| 280 : | psllw mm2, %3+1 ; shift t5 (shift +1 to.. | ||
| 281 : | psllw mm1, %3+1 ; shift t6 ..compensate cos4/2) | ||
| 282 : | psllw mm4, %3 ; shift t3 | ||
| 283 : | psllw mm5, %3 ; shift t2 | ||
| 284 : | psllw mm7, %3 ; shift t0 | ||
| 285 : | psllw mm6, %3 ; shift t1 | ||
| 286 : | psllw mm3, %3 ; shift t4 | ||
| 287 : | psllw mm0, %3 ; shift t7 | ||
| 288 : | |||
| 289 : | psubsw mm4, mm5 ; out4 = tp03-tp12 | ||
| 290 : | psubsw mm1, mm2 ; mm1: t6-t5 | ||
| 291 : | paddsw mm5, mm5 | ||
| 292 : | paddsw mm2, mm2 | ||
| 293 : | paddsw mm5, mm4 ; out0 = tp03+tp12 | ||
| 294 : | movq [%1+4*16], mm4 ; => out4 | ||
| 295 : | paddsw mm2, mm1 ; mm2: t6+t5 | ||
| 296 : | movq [%1+0*16], mm5 ; => out0 | ||
| 297 : | |||
| 298 : | movq mm4, [tan2 wrt rip] ; mm4 <= tan2 | ||
| 299 : | pmulhw mm4, mm7 ; tm03*tan2 | ||
| 300 : | movq mm5, [tan2 wrt rip] ; mm5 <= tan2 | ||
| 301 : | psubsw mm4, mm6 ; out6 = tm03*tan2 - tm12 | ||
| 302 : | pmulhw mm5, mm6 ; tm12*tan2 | ||
| 303 : | paddsw mm5, mm7 ; out2 = tm12*tan2 + tm03 | ||
| 304 : | |||
| 305 : | movq mm6, [sqrt2 wrt rip] | ||
| 306 : | movq mm7, [MMX_One wrt rip] | ||
| 307 : | |||
| 308 : | pmulhw mm2, mm6 ; mm2: tp65 = (t6 + t5)*cos4 | ||
| 309 : | por mm5, mm7 ; correct out2 | ||
| 310 : | por mm4, mm7 ; correct out6 | ||
| 311 : | pmulhw mm1, mm6 ; mm1: tm65 = (t6 - t5)*cos4 | ||
| 312 : | por mm2, mm7 ; correct tp65 | ||
| 313 : | |||
| 314 : | movq [%1+2*16], mm5 ; => out2 | ||
| 315 : | movq mm5, mm3 ; save t4 | ||
| 316 : | movq [%1+6*16], mm4 ; => out6 | ||
| 317 : | movq mm4, mm0 ; save t7 | ||
| 318 : | |||
| 319 : | psubsw mm3, mm1 ; mm3: tm465 = t4 - tm65 | ||
| 320 : | psubsw mm0, mm2 ; mm0: tm765 = t7 - tp65 | ||
| 321 : | paddsw mm2, mm4 ; mm2: tp765 = t7 + tp65 | ||
| 322 : | paddsw mm1, mm5 ; mm1: tp465 = t4 + tm65 | ||
| 323 : | |||
| 324 : | movq mm4, [tan3 wrt rip] ; tan3 - 1 | ||
| 325 : | movq mm5, [tan1 wrt rip] ; tan1 | ||
| 326 : | |||
| 327 : | movq mm7, mm3 ; save tm465 | ||
| 328 : | pmulhw mm3, mm4 ; tm465*(tan3-1) | ||
| 329 : | movq mm6, mm1 ; save tp465 | ||
| 330 : | pmulhw mm1, mm5 ; tp465*tan1 | ||
| 331 : | |||
| 332 : | paddsw mm3, mm7 ; tm465*tan3 | ||
| 333 : | pmulhw mm4, mm0 ; tm765*(tan3-1) | ||
| 334 : | paddsw mm4, mm0 ; tm765*tan3 | ||
| 335 : | pmulhw mm5, mm2 ; tp765*tan1 | ||
| 336 : | |||
| 337 : | paddsw mm1, mm2 ; out1 = tp765 + tp465*tan1 | ||
| 338 : | psubsw mm0, mm3 ; out3 = tm765 - tm465*tan3 | ||
| 339 : | paddsw mm7, mm4 ; out5 = tm465 + tm765*tan3 | ||
| 340 : | psubsw mm5, mm6 ; out7 =-tp465 + tp765*tan1 | ||
| 341 : | |||
| 342 : | movq [%1+1*16], mm1 ; => out1 | ||
| 343 : | movq [%1+3*16], mm0 ; => out3 | ||
| 344 : | movq [%1+5*16], mm7 ; => out5 | ||
| 345 : | movq [%1+7*16], mm5 ; => out7 | ||
| 346 : | %endmacro | ||
| 347 : | |||
| 348 : | ;----------------------------------------------------------------------------- | ||
| 349 : | ; fMTX_MULT_XMM (~20c) | ||
| 350 : | ; %1=dst, %2=src, %3 = Coeffs, %4/%5=rounders | ||
| 351 : | ;----------------------------------------------------------------------------- | ||
| 352 : | |||
| 353 : | %macro fMTX_MULT_XMM 5 | ||
| 354 : | movq mm0, [%2 + 0] ; mm0 = [0123] | ||
| 355 : | ; the 'pshufw' below is the only SSE instruction. | ||
| 356 : | ; For MMX-only version, it should be emulated with | ||
| 357 : | ; some 'punpck' soup... | ||
| 358 : | pshufw mm1, [%2 + 8], 00011011b ; mm1 = [7654] | ||
| 359 : | movq mm7, mm0 | ||
| 360 : | |||
| 361 : | paddsw mm0, mm1 ; mm0 = [a0 a1 a2 a3] | ||
| 362 : | psubsw mm7, mm1 ; mm7 = [b0 b1 b2 b3] | ||
| 363 : | |||
| 364 : | movq mm1, mm0 | ||
| 365 : | punpckldq mm0, mm7 ; mm0 = [a0 a1 b0 b1] | ||
| 366 : | punpckhdq mm1, mm7 ; mm1 = [b2 b3 a2 a3] | ||
| 367 : | |||
| 368 : | movq mm2, qword [%3 + 0] ; [ M00 M01 M16 M17] | ||
| 369 : | movq mm3, qword [%3 + 8] ; [ M02 M03 M18 M19] | ||
| 370 : | pmaddwd mm2, mm0 ; [a0.M00+a1.M01 | b0.M16+b1.M17] | ||
| 371 : | movq mm4, qword [%3 + 16] ; [ M04 M05 M20 M21] | ||
| 372 : | pmaddwd mm3, mm1 ; [a2.M02+a3.M03 | b2.M18+b3.M19] | ||
| 373 : | movq mm5, qword [%3 + 24] ; [ M06 M07 M22 M23] | ||
| 374 : | pmaddwd mm4, mm0 ; [a0.M04+a1.M05 | b0.M20+b1.M21] | ||
| 375 : | movq mm6, qword [%3 + 32] ; [ M08 M09 M24 M25] | ||
| 376 : | pmaddwd mm5, mm1 ; [a2.M06+a3.M07 | b2.M22+b3.M23] | ||
| 377 : | movq mm7, qword [%3 + 40] ; [ M10 M11 M26 M27] | ||
| 378 : | pmaddwd mm6, mm0 ; [a0.M08+a1.M09 | b0.M24+b1.M25] | ||
| 379 : | paddd mm2, mm3 ; [ out0 | out1 ] | ||
| 380 : | pmaddwd mm7, mm1 ; [a0.M10+a1.M11 | b0.M26+b1.M27] | ||
| 381 : | psrad mm2, 16 | ||
| 382 : | pmaddwd mm0, qword [%3 + 48] ; [a0.M12+a1.M13 | b0.M28+b1.M29] | ||
| 383 : | paddd mm4, mm5 ; [ out2 | out3 ] | ||
| 384 : | pmaddwd mm1, qword [%3 + 56] ; [a0.M14+a1.M15 | b0.M30+b1.M31] | ||
| 385 : | psrad mm4, 16 | ||
| 386 : | |||
| 387 : | paddd mm6, mm7 ; [ out4 | out5 ] | ||
| 388 : | psrad mm6, 16 | ||
| 389 : | paddd mm0, mm1 ; [ out6 | out7 ] | ||
| 390 : | psrad mm0, 16 | ||
| 391 : | |||
| 392 : | packssdw mm2, mm4 ; [ out0|out1|out2|out3 ] | ||
| 393 : | paddsw mm2, [%4] ; Round | ||
| 394 : | packssdw mm6, mm0 ; [ out4|out5|out6|out7 ] | ||
| 395 : | paddsw mm6, [%5] ; Round | ||
| 396 : | |||
| 397 : | psraw mm2, 4 ; => [-2048, 2047] | ||
| 398 : | psraw mm6, 4 | ||
| 399 : | |||
| 400 : | movq [%1 + 0], mm2 | ||
| 401 : | movq [%1 + 8], mm6 | ||
| 402 : | %endmacro | ||
| 403 : | |||
| 404 : | ;----------------------------------------------------------------------------- | ||
| 405 : | ; MAKE_FDCT_FUNC | ||
| 406 : | ; %1 funcname, %2 macro for row dct | ||
| 407 : | ;----------------------------------------------------------------------------- | ||
| 408 : | |||
| 409 : | %macro MAKE_FDCT_FUNC 2 | ||
| 410 : | ALIGN 16 | ||
| 411 : | cglobal %1 | ||
| 412 : | %1: | ||
| 413 : | %ifdef UNROLLED_LOOP | ||
| 414 : | mov rcx, rdi ; fist arg | ||
| 415 : | %else | ||
| 416 : | push rbx | ||
| 417 : | mov rcx, rdi ; first arg too | ||
| 418 : | %endif | ||
| 419 : | |||
| 420 : | fLLM_PASS rcx+0, rcx+0, 3 | ||
| 421 : | fLLM_PASS rcx+8, rcx+8, 3 | ||
| 422 : | |||
| 423 : | %ifdef UNROLLED_LOOP | ||
| 424 : | lea rsi, [fdct_table wrt rip] | ||
| 425 : | lea rdi, [fdct_rounding_1 wrt rip] | ||
| 426 : | lea rax, [fdct_rounding_2 wrt rip] | ||
| 427 : | %assign i 0 | ||
| 428 : | %rep 8 | ||
| 429 : | %2 rcx+i*16, rcx+i*16, rsi+i*64, rdi+i*8, rax+i*8 | ||
| 430 : | %assign i i+1 | ||
| 431 : | %endrep | ||
| 432 : | %else | ||
| 433 : | mov rax, 8 | ||
| 434 : | lea rdx, [fdct_table wrt rip] ; load offset, pic code | ||
| 435 : | lea rbx, [fdct_rounding_1 wrt rip] ; same | ||
| 436 : | lea rdi, [fdct_rounding_2 wrt rip] ; same too | ||
| 437 : | .loop | ||
| 438 : | %2 rcx, rcx, rdx, rbx, rdi | ||
| 439 : | add rcx, 2*8 | ||
| 440 : | add rdx, 2*32 | ||
| 441 : | add rbx, 2*4 | ||
| 442 : | add rdi, 2*4 | ||
| 443 : | dec rax | ||
| 444 : | jne .loop | ||
| 445 : | |||
| 446 : | pop rbx | ||
| 447 : | %endif | ||
| 448 : | |||
| 449 : | ret | ||
| 450 : | .endfunc | ||
| 451 : | %endmacro | ||
| 452 : | |||
| 453 : | ;============================================================================= | ||
| 454 : | ; Code | ||
| 455 : | ;============================================================================= | ||
| 456 : | |||
| 457 : | SECTION .text align=16 | ||
| 458 : | |||
| 459 : | ;----------------------------------------------------------------------------- | ||
| 460 : | ; void fdct_xmm_skal(int16_t block[64]]; | ||
| 461 : | ;----------------------------------------------------------------------------- | ||
| 462 : | |||
| 463 : | MAKE_FDCT_FUNC fdct_skal_x86_64, fMTX_MULT_XMM |
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