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| 1 : | edgomez | 1192 | ;/**************************************************************************** |
| 2 : | edgomez | 1174 | ; * |
| 3 : | ; * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | edgomez | 1176 | ; * - 3dne Quantization/Dequantization - |
| 5 : | edgomez | 1174 | ; * |
| 6 : | edgomez | 1176 | ; * Copyright (C) 2002-2003 Peter Ross <pross@xvid.org> |
| 7 : | ; * 2002 Jaan Kalda | ||
| 8 : | edgomez | 1174 | ; * |
| 9 : | ; * This program is free software ; you can redistribute it and/or modify | ||
| 10 : | ; * it 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 : | edgomez | 1192 | ; * $Id: quantize_mpeg_xmm.asm,v 1.1.2.3 2003-10-28 22:23:03 edgomez Exp $ |
| 24 : | edgomez | 1174 | ; * |
| 25 : | edgomez | 1192 | ; ***************************************************************************/ |
| 26 : | edgomez | 1176 | |
| 27 : | edgomez | 1174 | ; _3dne functions are compatible with iSSE, but are optimized specifically |
| 28 : | ; for K7 pipelines | ||
| 29 : | |||
| 30 : | %define SATURATE | ||
| 31 : | |||
| 32 : | edgomez | 1192 | BITS 32 |
| 33 : | edgomez | 1174 | |
| 34 : | edgomez | 1192 | %macro cglobal 1 |
| 35 : | edgomez | 1174 | %ifdef PREFIX |
| 36 : | edgomez | 1192 | global _%1 |
| 37 : | edgomez | 1174 | %define %1 _%1 |
| 38 : | %else | ||
| 39 : | global %1 | ||
| 40 : | %endif | ||
| 41 : | %endmacro | ||
| 42 : | |||
| 43 : | edgomez | 1192 | %macro cextern 1 |
| 44 : | edgomez | 1174 | %ifdef PREFIX |
| 45 : | edgomez | 1192 | extern _%1 |
| 46 : | edgomez | 1174 | %define %1 _%1 |
| 47 : | %else | ||
| 48 : | extern %1 | ||
| 49 : | %endif | ||
| 50 : | %endmacro | ||
| 51 : | edgomez | 1176 | |
| 52 : | edgomez | 1192 | ;============================================================================= |
| 53 : | edgomez | 1176 | ; Local data |
| 54 : | edgomez | 1192 | ;============================================================================= |
| 55 : | edgomez | 1176 | |
| 56 : | edgomez | 1192 | SECTION .rodata |
| 57 : | edgomez | 1176 | |
| 58 : | edgomez | 1192 | ALIGN 8 |
| 59 : | edgomez | 1176 | mmzero: |
| 60 : | dd 0,0 | ||
| 61 : | mmx_one: | ||
| 62 : | times 4 dw 1 | ||
| 63 : | edgomez | 1174 | |
| 64 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 65 : | ; divide by 2Q table | ||
| 66 : | ;----------------------------------------------------------------------------- | ||
| 67 : | edgomez | 1174 | |
| 68 : | edgomez | 1192 | ALIGN 16 |
| 69 : | edgomez | 1176 | mmx_divs: ;i>2 |
| 70 : | edgomez | 1174 | %assign i 1 |
| 71 : | %rep 31 | ||
| 72 : | edgomez | 1192 | times 4 dw ((1 << 15) / i + 1) |
| 73 : | edgomez | 1174 | %assign i i+1 |
| 74 : | %endrep | ||
| 75 : | |||
| 76 : | edgomez | 1192 | ALIGN 16 |
| 77 : | mmx_div: ;quant>2 | ||
| 78 : | times 4 dw 65535 ; the div by 2 formula will overflow for the case | ||
| 79 : | ; quant=1 but we don't care much because quant=1 | ||
| 80 : | ; is handled by a different piece of code that | ||
| 81 : | ; doesn't use this table. | ||
| 82 : | %assign quant 2 | ||
| 83 : | edgomez | 1174 | %rep 31 |
| 84 : | edgomez | 1192 | times 4 dw ((1 << 16) / quant + 1) |
| 85 : | %assign quant quant+1 | ||
| 86 : | edgomez | 1174 | %endrep |
| 87 : | |||
| 88 : | |||
| 89 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 90 : | ; intra matrix | ||
| 91 : | ; (TODO remove dependency on external tables for instance safiness) | ||
| 92 : | ;----------------------------------------------------------------------------- | ||
| 93 : | edgomez | 1174 | |
| 94 : | %macro FIXX 1 | ||
| 95 : | dw (1 << 16) / (%1) + 1 | ||
| 96 : | edgomez | 1192 | %endmacro |
| 97 : | edgomez | 1174 | |
| 98 : | cextern intra_matrix_fixl | ||
| 99 : | cextern intra_matrix_fix | ||
| 100 : | cextern intra_matrix1 | ||
| 101 : | cextern intra_matrix | ||
| 102 : | |||
| 103 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 104 : | edgomez | 1174 | ; inter matrix |
| 105 : | edgomez | 1192 | ; (TODO remove dependency on external tables for instance safiness) |
| 106 : | ;----------------------------------------------------------------------------- | ||
| 107 : | edgomez | 1174 | |
| 108 : | cextern inter_matrix1 | ||
| 109 : | cextern inter_matrix | ||
| 110 : | cextern inter_matrix_fix | ||
| 111 : | cextern inter_matrix_fixl | ||
| 112 : | |||
| 113 : | |||
| 114 : | edgomez | 1176 | %define nop4 db 08Dh, 074h, 026h,0 |
| 115 : | %define nop3 add esp, byte 0 | ||
| 116 : | %define nop2 mov esp, esp | ||
| 117 : | %define nop7 db 08dh, 02ch, 02dh,0,0,0,0 | ||
| 118 : | %define nop6 add ebp, dword 0 | ||
| 119 : | edgomez | 1174 | |
| 120 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 121 : | ; quantd table | ||
| 122 : | ;----------------------------------------------------------------------------- | ||
| 123 : | edgomez | 1174 | |
| 124 : | edgomez | 1176 | %define VM18P 3 |
| 125 : | %define VM18Q 4 | ||
| 126 : | edgomez | 1174 | |
| 127 : | edgomez | 1192 | ALIGN 16 |
| 128 : | edgomez | 1176 | quantd: |
| 129 : | edgomez | 1174 | %assign i 1 |
| 130 : | %rep 31 | ||
| 131 : | times 4 dw (((VM18P*i) + (VM18Q/2)) / VM18Q) | ||
| 132 : | %assign i i+1 | ||
| 133 : | %endrep | ||
| 134 : | |||
| 135 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 136 : | edgomez | 1174 | ; multiple by 2Q table |
| 137 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 138 : | edgomez | 1174 | |
| 139 : | edgomez | 1192 | ALIGN 16 |
| 140 : | mmx_mul_quant: | ||
| 141 : | edgomez | 1174 | %assign i 1 |
| 142 : | %rep 31 | ||
| 143 : | times 4 dw i | ||
| 144 : | %assign i i+1 | ||
| 145 : | %endrep | ||
| 146 : | |||
| 147 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 148 : | ; saturation limits | ||
| 149 : | ;----------------------------------------------------------------------------- | ||
| 150 : | edgomez | 1174 | |
| 151 : | edgomez | 1192 | ALIGN 16 |
| 152 : | edgomez | 1176 | mmx_32767_minus_2047: |
| 153 : | edgomez | 1192 | times 4 dw (32767-2047) |
| 154 : | edgomez | 1176 | mmx_32768_minus_2048: |
| 155 : | times 4 dw (32768-2048) | ||
| 156 : | mmx_2047: | ||
| 157 : | times 4 dw 2047 | ||
| 158 : | mmx_minus_2048: | ||
| 159 : | times 4 dw (-2048) | ||
| 160 : | zero: | ||
| 161 : | times 4 dw 0 | ||
| 162 : | edgomez | 1174 | |
| 163 : | edgomez | 1176 | int_div: |
| 164 : | edgomez | 1174 | dd 0 |
| 165 : | %assign i 1 | ||
| 166 : | edgomez | 1192 | %rep 255 |
| 167 : | edgomez | 1174 | dd (1 << 17) / ( i) + 1 |
| 168 : | %assign i i+1 | ||
| 169 : | %endrep | ||
| 170 : | |||
| 171 : | edgomez | 1192 | ;============================================================================= |
| 172 : | edgomez | 1176 | ; Code |
| 173 : | edgomez | 1192 | ;============================================================================= |
| 174 : | edgomez | 1176 | |
| 175 : | edgomez | 1192 | SECTION .text |
| 176 : | edgomez | 1174 | |
| 177 : | edgomez | 1192 | cglobal quant_mpeg_intra_xmm |
| 178 : | cglobal quant_mpeg_inter_xmm | ||
| 179 : | cglobal dequant_mpeg_intra_3dne | ||
| 180 : | cglobal dequant_mpeg_inter_3dne | ||
| 181 : | |||
| 182 : | ;----------------------------------------------------------------------------- | ||
| 183 : | edgomez | 1174 | ; |
| 184 : | edgomez | 1192 | ; uint32_t quant_mpeg_intra_xmm(int16_t * coeff, |
| 185 : | edgomez | 1176 | ; const int16_t const * data, |
| 186 : | ; const uint32_t quant, | ||
| 187 : | ; const uint32_t dcscalar); | ||
| 188 : | edgomez | 1174 | ; |
| 189 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 190 : | edgomez | 1174 | |
| 191 : | edgomez | 1192 | ALIGN 16 |
| 192 : | edgomez | 1174 | quant_mpeg_intra_xmm: |
| 193 : | edgomez | 1192 | mov eax, [esp + 8] ; data |
| 194 : | mov ecx, [esp + 12] ; quant | ||
| 195 : | mov edx, [esp + 4] ; coeff | ||
| 196 : | push esi | ||
| 197 : | push edi | ||
| 198 : | push ebx | ||
| 199 : | nop | ||
| 200 : | mov edi, mmzero | ||
| 201 : | mov esi, -14 | ||
| 202 : | pxor mm0, mm0 | ||
| 203 : | pxor mm3, mm3 | ||
| 204 : | cmp ecx, byte 1 | ||
| 205 : | je near .q1loop | ||
| 206 : | cmp ecx, byte 19 | ||
| 207 : | jg near .lloop | ||
| 208 : | nop6 | ||
| 209 : | |||
| 210 : | ALIGN 16 | ||
| 211 : | edgomez | 1174 | .loop |
| 212 : | edgomez | 1192 | movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
| 213 : | psubw mm0, mm1 ;-mm1 | ||
| 214 : | movq mm4, [eax + 8*esi + 120] ; | ||
| 215 : | psubw mm3, mm4 ;-mm4 | ||
| 216 : | pmaxsw mm0, mm1 ;|src| | ||
| 217 : | pmaxsw mm3,mm4 | ||
| 218 : | nop2 | ||
| 219 : | psraw mm1, 15 ;sign src | ||
| 220 : | psraw mm4, 15 | ||
| 221 : | psllw mm0, 4 ;level << 4 ; | ||
| 222 : | psllw mm3, 4 | ||
| 223 : | paddw mm0, [intra_matrix1 + 8*esi+112] | ||
| 224 : | paddw mm3, [intra_matrix1 + 8*esi+120] | ||
| 225 : | movq mm5, [intra_matrix_fixl + 8*esi+112] | ||
| 226 : | movq mm7, [intra_matrix_fixl + 8*esi+120] | ||
| 227 : | pmulhuw mm5, mm0 | ||
| 228 : | pmulhuw mm7, mm3 | ||
| 229 : | mov esp, esp | ||
| 230 : | movq mm2, [intra_matrix + 8*esi+112] | ||
| 231 : | movq mm6, [intra_matrix + 8*esi+120] | ||
| 232 : | pmullw mm2, mm5 | ||
| 233 : | pmullw mm6, mm7 | ||
| 234 : | psubw mm0, mm2 | ||
| 235 : | psubw mm3, mm6 | ||
| 236 : | nop4 | ||
| 237 : | movq mm2, [quantd + ecx * 8 - 8] | ||
| 238 : | movq mm6, [mmx_divs + ecx * 8 - 8] | ||
| 239 : | paddw mm5, mm2 | ||
| 240 : | paddw mm7, mm2 | ||
| 241 : | mov esp, esp | ||
| 242 : | pmulhuw mm0, [intra_matrix_fix + 8*esi+112] | ||
| 243 : | pmulhuw mm3, [intra_matrix_fix + 8*esi+120] | ||
| 244 : | paddw mm5, mm0 | ||
| 245 : | paddw mm7, mm3 | ||
| 246 : | movq mm0, [edi] | ||
| 247 : | movq mm3, [edi] | ||
| 248 : | pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 | ||
| 249 : | pmulhuw mm7, mm6 ; (level + quantd) / quant (0<quant<32) | ||
| 250 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
| 251 : | pxor mm7, mm4 ; | ||
| 252 : | psubw mm5, mm1 ; undisplace | ||
| 253 : | psubw mm7, mm4 ; | ||
| 254 : | movq [edx + 8*esi+112], mm5 | ||
| 255 : | movq [edx + 8*esi +120], mm7 | ||
| 256 : | add esi, byte 2 | ||
| 257 : | jng near .loop | ||
| 258 : | edgomez | 1174 | |
| 259 : | .done | ||
| 260 : | ; calculate data[0] // (int32_t)dcscalar) | ||
| 261 : | edgomez | 1192 | mov esi, [esp + 12 + 16] ; dcscalar |
| 262 : | movsx ecx, word [eax] | ||
| 263 : | mov edi, ecx | ||
| 264 : | mov edx, [esp + 12 + 16] | ||
| 265 : | shr edx, 1 ; ebx = dcscalar /2 | ||
| 266 : | sar edi, 31 ; cdq is vectorpath | ||
| 267 : | xor edx, edi ; ebx = eax V -eax -1 | ||
| 268 : | sub ecx, edi | ||
| 269 : | add ecx, edx | ||
| 270 : | mov edx, [dword esp + 12 + 4] | ||
| 271 : | mov esi, [int_div+4*esi] | ||
| 272 : | imul ecx, esi | ||
| 273 : | sar ecx, 17 | ||
| 274 : | lea ebx, [byte ecx + 1] | ||
| 275 : | cmovs ecx, ebx | ||
| 276 : | ; idiv cx ; ecx = edi:ecx / dcscalar | ||
| 277 : | edgomez | 1174 | |
| 278 : | edgomez | 1192 | mov ebx, [esp] |
| 279 : | mov edi, [esp+4] | ||
| 280 : | mov esi, [esp+8] | ||
| 281 : | add esp, byte 12 | ||
| 282 : | mov [edx], cx ; coeff[0] = ax | ||
| 283 : | edgomez | 1174 | |
| 284 : | edgomez | 1192 | xor eax, eax |
| 285 : | ret | ||
| 286 : | |||
| 287 : | ALIGN 16 | ||
| 288 : | edgomez | 1174 | .q1loop |
| 289 : | edgomez | 1192 | movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
| 290 : | psubw mm0, mm1 ;-mm1 | ||
| 291 : | movq mm4, [eax + 8*esi+120] ; | ||
| 292 : | psubw mm3, mm4 ;-mm4 | ||
| 293 : | pmaxsw mm0, mm1 ;|src| | ||
| 294 : | pmaxsw mm3, mm4 | ||
| 295 : | nop2 | ||
| 296 : | psraw mm1, 15 ;sign src | ||
| 297 : | psraw mm4, 15 | ||
| 298 : | psllw mm0, 4 ; level << 4 | ||
| 299 : | psllw mm3, 4 | ||
| 300 : | paddw mm0, [intra_matrix1 + 8*esi+112] ;mm0 is to be divided | ||
| 301 : | paddw mm3, [intra_matrix1 + 8*esi+120] ;intra1 contains fix for division by 1 | ||
| 302 : | movq mm5, [intra_matrix_fixl + 8*esi+112] ;with rounding down | ||
| 303 : | movq mm7, [intra_matrix_fixl + 8*esi+120] | ||
| 304 : | pmulhuw mm5, mm0 | ||
| 305 : | pmulhuw mm7, mm3 ;mm7: first approx of division | ||
| 306 : | mov esp, esp | ||
| 307 : | movq mm2, [intra_matrix + 8*esi+112] | ||
| 308 : | movq mm6, [intra_matrix + 8*esi+120] ; divs for q<=16 | ||
| 309 : | pmullw mm2, mm5 ;test value <= original | ||
| 310 : | pmullw mm6, mm7 | ||
| 311 : | psubw mm0, mm2 ;mismatch | ||
| 312 : | psubw mm3, mm6 | ||
| 313 : | nop4 | ||
| 314 : | movq mm2, [quantd + ecx * 8 - 8] | ||
| 315 : | paddw mm5, mm2 ;first approx with quantd | ||
| 316 : | paddw mm7, mm2 | ||
| 317 : | mov esp, esp | ||
| 318 : | pmulhuw mm0, [intra_matrix_fix + 8*esi+112] ;correction | ||
| 319 : | pmulhuw mm3, [intra_matrix_fix + 8*esi+120] | ||
| 320 : | paddw mm5, mm0 ;final result with quantd | ||
| 321 : | paddw mm7, mm3 | ||
| 322 : | movq mm0, [edi] | ||
| 323 : | movq mm3, [edi] | ||
| 324 : | mov esp, esp | ||
| 325 : | psrlw mm5, 1 ; (level + quantd) /2 (quant = 1) | ||
| 326 : | psrlw mm7, 1 | ||
| 327 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
| 328 : | pxor mm7, mm4 ; | ||
| 329 : | psubw mm5, mm1 ; undisplace | ||
| 330 : | psubw mm7, mm4 ; | ||
| 331 : | movq [edx + 8*esi+112], mm5 | ||
| 332 : | movq [edx + 8*esi +120], mm7 | ||
| 333 : | add esi, byte 2 | ||
| 334 : | jng near .q1loop | ||
| 335 : | jmp near .done | ||
| 336 : | edgomez | 1174 | |
| 337 : | edgomez | 1192 | ALIGN 8 |
| 338 : | edgomez | 1174 | .lloop |
| 339 : | edgomez | 1192 | movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
| 340 : | psubw mm0, mm1 ;-mm1 | ||
| 341 : | movq mm4, [eax + 8*esi+120] | ||
| 342 : | psubw mm3, mm4 ;-mm4 | ||
| 343 : | pmaxsw mm0, mm1 ;|src| | ||
| 344 : | pmaxsw mm3, mm4 | ||
| 345 : | nop2 | ||
| 346 : | psraw mm1, 15 ;sign src | ||
| 347 : | psraw mm4, 15 | ||
| 348 : | psllw mm0, 4 ; level << 4 | ||
| 349 : | psllw mm3, 4 ; | ||
| 350 : | paddw mm0, [intra_matrix1 + 8*esi+112] ;mm0 is to be divided intra1 contains fix for division by 1 | ||
| 351 : | paddw mm3, [intra_matrix1 + 8*esi+120] | ||
| 352 : | movq mm5, [intra_matrix_fixl + 8*esi+112] | ||
| 353 : | movq mm7, [intra_matrix_fixl + 8*esi+120] | ||
| 354 : | pmulhuw mm5, mm0 | ||
| 355 : | pmulhuw mm7, mm3 ;mm7: first approx of division | ||
| 356 : | mov esp, esp | ||
| 357 : | movq mm2, [intra_matrix + 8*esi+112] | ||
| 358 : | movq mm6, [intra_matrix + 8*esi+120] | ||
| 359 : | pmullw mm2, mm5 ;test value <= original | ||
| 360 : | pmullw mm6, mm7 | ||
| 361 : | psubw mm0, mm2 ;mismatch | ||
| 362 : | psubw mm3, mm6 | ||
| 363 : | nop4 | ||
| 364 : | movq mm2, [quantd + ecx * 8 - 8] | ||
| 365 : | movq mm6, [mmx_div + ecx * 8 - 8] ; divs for q<=16 | ||
| 366 : | paddw mm5, mm2 ;first approx with quantd | ||
| 367 : | paddw mm7, mm2 | ||
| 368 : | mov esp, esp | ||
| 369 : | pmulhuw mm0, [intra_matrix_fix + 8*esi+112] ;correction | ||
| 370 : | pmulhuw mm3, [intra_matrix_fix + 8*esi+120] | ||
| 371 : | paddw mm5, mm0 ;final result with quantd | ||
| 372 : | paddw mm7, mm3 | ||
| 373 : | movq mm0, [edi] | ||
| 374 : | movq mm3, [edi] | ||
| 375 : | mov esp, esp | ||
| 376 : | pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 | ||
| 377 : | pmulhuw mm7, mm6 ; (level + quantd) / quant (0<quant<32) | ||
| 378 : | psrlw mm5, 1 ; (level + quantd) / (2*quant) | ||
| 379 : | psrlw mm7, 1 | ||
| 380 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
| 381 : | pxor mm7, mm4 ; | ||
| 382 : | psubw mm5, mm1 ; undisplace | ||
| 383 : | psubw mm7, mm4 ; | ||
| 384 : | movq [edx + 8*esi+112], mm5 | ||
| 385 : | movq [edx + 8*esi +120], mm7 | ||
| 386 : | add esi,byte 2 | ||
| 387 : | jng near .lloop | ||
| 388 : | jmp near .done | ||
| 389 : | edgomez | 1174 | |
| 390 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 391 : | edgomez | 1174 | ; |
| 392 : | edgomez | 1176 | ; uint32_t quant_mpeg_inter_xmm(int16_t * coeff, |
| 393 : | ; const int16_t const * data, | ||
| 394 : | ; const uint32_t quant); | ||
| 395 : | edgomez | 1174 | ; |
| 396 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 397 : | edgomez | 1174 | |
| 398 : | edgomez | 1192 | ALIGN 16 |
| 399 : | edgomez | 1174 | quant_mpeg_inter_xmm: |
| 400 : | edgomez | 1192 | mov eax, [esp + 8] ; data |
| 401 : | mov ecx, [esp + 12] ; quant | ||
| 402 : | mov edx, [esp + 4] ; coeff | ||
| 403 : | push esi | ||
| 404 : | push edi | ||
| 405 : | push ebx | ||
| 406 : | nop | ||
| 407 : | mov edi, mmzero | ||
| 408 : | mov esi, -14 | ||
| 409 : | mov ebx, esp | ||
| 410 : | sub esp, byte 24 | ||
| 411 : | lea ebx, [esp+8] | ||
| 412 : | and ebx, byte -8 ;ALIGN 8 | ||
| 413 : | pxor mm0, mm0 | ||
| 414 : | pxor mm3, mm3 | ||
| 415 : | movq [byte ebx],mm0 | ||
| 416 : | db 0Fh, 7Fh, 44h, 23h, 8 ;movq [ebx+8],mm0 | ||
| 417 : | cmp ecx, byte 1 | ||
| 418 : | je near .q1loop | ||
| 419 : | cmp ecx, byte 19 | ||
| 420 : | jg near .lloop | ||
| 421 : | nop | ||
| 422 : | |||
| 423 : | ALIGN 16 | ||
| 424 : | edgomez | 1174 | .loop |
| 425 : | edgomez | 1192 | movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
| 426 : | psubw mm0, mm1 ;-mm1 | ||
| 427 : | movq mm4, [eax + 8*esi + 120] ; | ||
| 428 : | psubw mm3, mm4 ;-mm4 | ||
| 429 : | pmaxsw mm0, mm1 ;|src| | ||
| 430 : | pmaxsw mm3, mm4 | ||
| 431 : | nop2 | ||
| 432 : | psraw mm1, 15 ;sign src | ||
| 433 : | psraw mm4, 15 | ||
| 434 : | psllw mm0, 4 ; level << 4 | ||
| 435 : | psllw mm3, 4 ; | ||
| 436 : | paddw mm0, [inter_matrix1 + 8*esi+112] | ||
| 437 : | paddw mm3, [inter_matrix1 + 8*esi+120] | ||
| 438 : | movq mm5, [inter_matrix_fixl + 8*esi+112] | ||
| 439 : | movq mm7, [inter_matrix_fixl + 8*esi+120] | ||
| 440 : | pmulhuw mm5, mm0 | ||
| 441 : | pmulhuw mm7, mm3 | ||
| 442 : | mov esp, esp | ||
| 443 : | movq mm2, [inter_matrix + 8*esi+112] | ||
| 444 : | movq mm6, [inter_matrix + 8*esi+120] | ||
| 445 : | pmullw mm2, mm5 | ||
| 446 : | pmullw mm6, mm7 | ||
| 447 : | psubw mm0, mm2 | ||
| 448 : | psubw mm3, mm6 | ||
| 449 : | movq mm2, [byte ebx] | ||
| 450 : | movq mm6, [mmx_divs + ecx * 8 - 8] | ||
| 451 : | pmulhuw mm0, [inter_matrix_fix + 8*esi+112] | ||
| 452 : | pmulhuw mm3, [inter_matrix_fix + 8*esi+120] | ||
| 453 : | paddw mm2, [ebx+8] ;sum | ||
| 454 : | paddw mm5, mm0 | ||
| 455 : | paddw mm7, mm3 | ||
| 456 : | movq mm0, [edi] | ||
| 457 : | movq mm3, [edi] | ||
| 458 : | pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 | ||
| 459 : | pmulhuw mm7, mm6 ; (level ) / quant (0<quant<32) | ||
| 460 : | add esi, byte 2 | ||
| 461 : | paddw mm2, mm5 ;sum += x1 | ||
| 462 : | movq [ebx], mm7 ;store x2 | ||
| 463 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
| 464 : | pxor mm7, mm4 ; | ||
| 465 : | psubw mm5, mm1 ; undisplace | ||
| 466 : | psubw mm7, mm4 ; | ||
| 467 : | db 0Fh, 7Fh, 54h, 23h, 08 ;movq [ebx+8],mm2 ;store sum | ||
| 468 : | movq [edx + 8*esi+112-16], mm5 | ||
| 469 : | movq [edx + 8*esi +120-16], mm7 | ||
| 470 : | jng near .loop | ||
| 471 : | edgomez | 1174 | |
| 472 : | .done | ||
| 473 : | ; calculate data[0] // (int32_t)dcscalar) | ||
| 474 : | edgomez | 1192 | paddw mm2, [ebx] |
| 475 : | mov ebx, [esp+24] | ||
| 476 : | mov edi, [esp+4+24] | ||
| 477 : | mov esi, [esp+8+24] | ||
| 478 : | add esp, byte 12+24 | ||
| 479 : | pmaddwd mm2, [mmx_one] | ||
| 480 : | punpckldq mm0, mm2 ;get low dw to mm0:high | ||
| 481 : | paddd mm0,mm2 | ||
| 482 : | punpckhdq mm0, mm0 ;get result to low | ||
| 483 : | movd eax, mm0 | ||
| 484 : | edgomez | 1174 | |
| 485 : | edgomez | 1192 | ret |
| 486 : | edgomez | 1174 | |
| 487 : | edgomez | 1192 | ALIGN 16 |
| 488 : | edgomez | 1174 | .q1loop |
| 489 : | edgomez | 1192 | movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
| 490 : | psubw mm0, mm1 ;-mm1 | ||
| 491 : | movq mm4, [eax + 8*esi+120] | ||
| 492 : | psubw mm3, mm4 ;-mm4 | ||
| 493 : | pmaxsw mm0, mm1 ;|src| | ||
| 494 : | pmaxsw mm3, mm4 | ||
| 495 : | nop2 | ||
| 496 : | psraw mm1, 15 ; sign src | ||
| 497 : | psraw mm4, 15 | ||
| 498 : | psllw mm0, 4 ; level << 4 | ||
| 499 : | psllw mm3, 4 | ||
| 500 : | paddw mm0, [inter_matrix1 + 8*esi+112] ;mm0 is to be divided | ||
| 501 : | paddw mm3, [inter_matrix1 + 8*esi+120] ; inter1 contains fix for division by 1 | ||
| 502 : | movq mm5, [inter_matrix_fixl + 8*esi+112] ;with rounding down | ||
| 503 : | movq mm7, [inter_matrix_fixl + 8*esi+120] | ||
| 504 : | pmulhuw mm5, mm0 | ||
| 505 : | pmulhuw mm7, mm3 ;mm7: first approx of division | ||
| 506 : | mov esp, esp | ||
| 507 : | movq mm2, [inter_matrix + 8*esi+112] | ||
| 508 : | movq mm6, [inter_matrix + 8*esi+120] ; divs for q<=16 | ||
| 509 : | pmullw mm2, mm5 ;test value <= original | ||
| 510 : | pmullw mm6, mm7 | ||
| 511 : | psubw mm0, mm2 ;mismatch | ||
| 512 : | psubw mm3, mm6 | ||
| 513 : | movq mm2, [byte ebx] | ||
| 514 : | pmulhuw mm0, [inter_matrix_fix + 8*esi+112] ;correction | ||
| 515 : | pmulhuw mm3, [inter_matrix_fix + 8*esi+120] | ||
| 516 : | paddw mm2, [ebx+8] ;sum | ||
| 517 : | paddw mm5, mm0 ;final result | ||
| 518 : | paddw mm7, mm3 | ||
| 519 : | movq mm0, [edi] | ||
| 520 : | movq mm3, [edi] | ||
| 521 : | psrlw mm5, 1 ; (level ) /2 (quant = 1) | ||
| 522 : | psrlw mm7, 1 | ||
| 523 : | add esi, byte 2 | ||
| 524 : | paddw mm2, mm5 ;sum += x1 | ||
| 525 : | movq [ebx], mm7 ;store x2 | ||
| 526 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
| 527 : | pxor mm7, mm4 ; | ||
| 528 : | psubw mm5, mm1 ; undisplace | ||
| 529 : | psubw mm7, mm4 ; | ||
| 530 : | movq [ebx+8], mm2 ;store sum | ||
| 531 : | movq [edx + 8*esi+112-16], mm5 | ||
| 532 : | movq [edx + 8*esi +120-16], mm7 | ||
| 533 : | jng near .q1loop | ||
| 534 : | jmp near .done | ||
| 535 : | edgomez | 1174 | |
| 536 : | edgomez | 1192 | ALIGN 8 |
| 537 : | edgomez | 1174 | .lloop |
| 538 : | edgomez | 1192 | movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
| 539 : | psubw mm0,mm1 ;-mm1 | ||
| 540 : | movq mm4, [eax + 8*esi+120] | ||
| 541 : | psubw mm3,mm4 ;-mm4 | ||
| 542 : | pmaxsw mm0,mm1 ;|src| | ||
| 543 : | pmaxsw mm3,mm4 | ||
| 544 : | nop2 | ||
| 545 : | psraw mm1,15 ;sign src | ||
| 546 : | psraw mm4,15 | ||
| 547 : | psllw mm0, 4 ; level << 4 | ||
| 548 : | psllw mm3, 4 ; | ||
| 549 : | paddw mm0, [inter_matrix1 + 8*esi+112] ;mm0 is to be divided inter1 contains fix for division by 1 | ||
| 550 : | paddw mm3, [inter_matrix1 + 8*esi+120] | ||
| 551 : | movq mm5,[inter_matrix_fixl + 8*esi+112] | ||
| 552 : | movq mm7,[inter_matrix_fixl + 8*esi+120] | ||
| 553 : | pmulhuw mm5,mm0 | ||
| 554 : | pmulhuw mm7,mm3 ;mm7: first approx of division | ||
| 555 : | mov esp,esp | ||
| 556 : | movq mm2,[inter_matrix + 8*esi+112] | ||
| 557 : | movq mm6,[inter_matrix + 8*esi+120] | ||
| 558 : | pmullw mm2,mm5 ;test value <= original | ||
| 559 : | pmullw mm6,mm7 | ||
| 560 : | psubw mm0,mm2 ;mismatch | ||
| 561 : | psubw mm3,mm6 | ||
| 562 : | movq mm2,[byte ebx] | ||
| 563 : | movq mm6,[mmx_div + ecx * 8 - 8] ; divs for q<=16 | ||
| 564 : | pmulhuw mm0,[inter_matrix_fix + 8*esi+112] ;correction | ||
| 565 : | pmulhuw mm3,[inter_matrix_fix + 8*esi+120] | ||
| 566 : | paddw mm2,[ebx+8] ;sum | ||
| 567 : | paddw mm5,mm0 ;final result | ||
| 568 : | paddw mm7,mm3 | ||
| 569 : | movq mm0,[edi] | ||
| 570 : | movq mm3,[edi] | ||
| 571 : | pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 | ||
| 572 : | pmulhuw mm7, mm6 ; (level ) / quant (0<quant<32) | ||
| 573 : | add esi,byte 2 | ||
| 574 : | psrlw mm5, 1 ; (level ) / (2*quant) | ||
| 575 : | paddw mm2,mm5 ;sum += x1 | ||
| 576 : | psrlw mm7, 1 | ||
| 577 : | movq [ebx],mm7 ;store x2 | ||
| 578 : | pxor mm5, mm1 ; mm0 *= sign(mm0) | ||
| 579 : | pxor mm7, mm4 ; | ||
| 580 : | psubw mm5, mm1 ; undisplace | ||
| 581 : | psubw mm7, mm4 ; | ||
| 582 : | db 0Fh, 7Fh, 54h, 23h, 08 ;movq [ebx+8],mm2 ;store sum | ||
| 583 : | movq [edx + 8*esi+112-16], mm5 | ||
| 584 : | movq [edx + 8*esi +120-16], mm7 | ||
| 585 : | jng near .lloop | ||
| 586 : | jmp near .done | ||
| 587 : | edgomez | 1174 | |
| 588 : | |||
| 589 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 590 : | edgomez | 1174 | ; |
| 591 : | edgomez | 1176 | ; uint32_t dequant_mpeg_intra_3dne(int16_t *data, |
| 592 : | ; const int16_t const *coeff, | ||
| 593 : | ; const uint32_t quant, | ||
| 594 : | ; const uint32_t dcscalar); | ||
| 595 : | edgomez | 1174 | ; |
| 596 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 597 : | edgomez | 1174 | |
| 598 : | ; Note: in order to saturate 'easily', we pre-shift the quantifier | ||
| 599 : | ; by 4. Then, the high-word of (coeff[]*matrix[i]*quant) are used to | ||
| 600 : | ; build a saturating mask. It is non-zero only when an overflow occured. | ||
| 601 : | ; We thus avoid packing/unpacking toward double-word. | ||
| 602 : | ; Moreover, we perform the mult (matrix[i]*quant) first, instead of, e.g., | ||
| 603 : | ; (coeff[i]*matrix[i]). This is less prone to overflow if coeff[] are not | ||
| 604 : | ; checked. Input ranges are: coeff in [-127,127], inter_matrix in [1..255],a | ||
| 605 : | edgomez | 1192 | ; and quant in [1..31]. |
| 606 : | edgomez | 1174 | ; |
| 607 : | edgomez | 1176 | |
| 608 : | edgomez | 1174 | %macro DEQUANT4INTRAMMX 1 |
| 609 : | edgomez | 1192 | movq mm1, [byte ecx+ 16 * %1] ; mm0 = c = coeff[i] |
| 610 : | movq mm4, [ecx+ 16 * %1 +8] ; mm3 = c' = coeff[i+1] | ||
| 611 : | psubw mm0, mm1 | ||
| 612 : | psubw mm3, mm4 | ||
| 613 : | pmaxsw mm0, mm1 | ||
| 614 : | pmaxsw mm3, mm4 | ||
| 615 : | psraw mm1, 15 | ||
| 616 : | psraw mm4, 15 | ||
| 617 : | %if %1 | ||
| 618 : | movq mm2, [eax+8] ;preshifted quant | ||
| 619 : | movq mm7, [eax+8] | ||
| 620 : | edgomez | 1174 | %endif |
| 621 : | edgomez | 1192 | pmullw mm2, [intra_matrix + 16 * %1 ] ; matrix[i]*quant |
| 622 : | pmullw mm7, [intra_matrix + 16 * %1 +8] ; matrix[i+1]*quant | ||
| 623 : | movq mm5, mm0 | ||
| 624 : | movq mm6, mm3 | ||
| 625 : | pmulhw mm0, mm2 ; high of coeff*(matrix*quant) | ||
| 626 : | pmulhw mm3, mm7 ; high of coeff*(matrix*quant) | ||
| 627 : | pmullw mm2, mm5 ; low of coeff*(matrix*quant) | ||
| 628 : | pmullw mm7, mm6 ; low of coeff*(matrix*quant) | ||
| 629 : | pcmpgtw mm0, [eax] | ||
| 630 : | pcmpgtw mm3, [eax] | ||
| 631 : | paddusw mm2, mm0 | ||
| 632 : | paddusw mm7, mm3 | ||
| 633 : | psrlw mm2, 5 | ||
| 634 : | psrlw mm7, 5 | ||
| 635 : | pxor mm2, mm1 ; start negating back | ||
| 636 : | pxor mm7, mm4 ; start negating back | ||
| 637 : | psubusw mm1, mm0 | ||
| 638 : | psubusw mm4, mm3 | ||
| 639 : | movq mm0, [eax] ;zero | ||
| 640 : | movq mm3, [eax] ;zero | ||
| 641 : | psubw mm2, mm1 ; finish negating back | ||
| 642 : | psubw mm7, mm4 ; finish negating back | ||
| 643 : | movq [byte edx + 16 * %1], mm2 ; data[i] | ||
| 644 : | movq [edx + 16 * %1 +8], mm7 ; data[i+1] | ||
| 645 : | edgomez | 1174 | %endmacro |
| 646 : | |||
| 647 : | edgomez | 1192 | ALIGN 16 |
| 648 : | edgomez | 1174 | dequant_mpeg_intra_3dne: |
| 649 : | edgomez | 1192 | mov eax, [esp+12] ; quant |
| 650 : | mov ecx, [esp+8] ; coeff | ||
| 651 : | movq mm7, [mmx_mul_quant + eax*8 - 8] | ||
| 652 : | psllw mm7, 2 ; << 2. See comment. | ||
| 653 : | mov edx, [esp+4] ; data | ||
| 654 : | push ebx | ||
| 655 : | movsx ebx, word [ecx] | ||
| 656 : | pxor mm0, mm0 | ||
| 657 : | pxor mm3, mm3 | ||
| 658 : | push esi | ||
| 659 : | lea eax, [esp-28] | ||
| 660 : | sub esp, byte 32 | ||
| 661 : | and eax, byte -8 ;points to qword ALIGNed space on stack | ||
| 662 : | movq [eax], mm0 | ||
| 663 : | movq [eax+8], mm7 | ||
| 664 : | imul ebx, [esp+16+8+32] ; dcscalar | ||
| 665 : | movq mm2, mm7 | ||
| 666 : | edgomez | 1174 | |
| 667 : | edgomez | 1192 | ALIGN 4 |
| 668 : | edgomez | 1174 | |
| 669 : | edgomez | 1192 | DEQUANT4INTRAMMX 0 |
| 670 : | edgomez | 1174 | |
| 671 : | edgomez | 1192 | mov esi, -2048 |
| 672 : | nop | ||
| 673 : | cmp ebx, esi | ||
| 674 : | edgomez | 1174 | |
| 675 : | edgomez | 1192 | DEQUANT4INTRAMMX 1 |
| 676 : | edgomez | 1174 | |
| 677 : | edgomez | 1192 | cmovl ebx, esi |
| 678 : | neg esi | ||
| 679 : | sub esi, byte 1 ;2047 | ||
| 680 : | edgomez | 1174 | |
| 681 : | edgomez | 1192 | DEQUANT4INTRAMMX 2 |
| 682 : | edgomez | 1174 | |
| 683 : | edgomez | 1192 | cmp ebx, esi |
| 684 : | cmovg ebx, esi | ||
| 685 : | lea ebp, [byte ebp] | ||
| 686 : | edgomez | 1174 | |
| 687 : | edgomez | 1192 | DEQUANT4INTRAMMX 3 |
| 688 : | edgomez | 1174 | |
| 689 : | edgomez | 1192 | mov esi, [esp+32] |
| 690 : | mov [byte edx], bx | ||
| 691 : | mov ebx, [esp+32+4] | ||
| 692 : | edgomez | 1174 | |
| 693 : | edgomez | 1192 | DEQUANT4INTRAMMX 4 |
| 694 : | DEQUANT4INTRAMMX 5 | ||
| 695 : | DEQUANT4INTRAMMX 6 | ||
| 696 : | DEQUANT4INTRAMMX 7 | ||
| 697 : | edgomez | 1174 | |
| 698 : | edgomez | 1192 | add esp, byte 32+8 |
| 699 : | edgomez | 1174 | |
| 700 : | edgomez | 1192 | xor eax, eax |
| 701 : | ret | ||
| 702 : | |||
| 703 : | ;----------------------------------------------------------------------------- | ||
| 704 : | edgomez | 1174 | ; |
| 705 : | edgomez | 1176 | ; uint32_t dequant_mpeg_inter_3dne(int16_t * data, |
| 706 : | ; const int16_t * const coeff, | ||
| 707 : | ; const uint32_t quant); | ||
| 708 : | edgomez | 1174 | ; |
| 709 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 710 : | edgomez | 1174 | |
| 711 : | ; Note: We use (2*c + sgn(c) - sgn(-c)) as multiplier | ||
| 712 : | ; so we handle the 3 cases: c<0, c==0, and c>0 in one shot. | ||
| 713 : | ; sgn(x) is the result of 'pcmpgtw 0,x': 0 if x>=0, -1 if x<0. | ||
| 714 : | ; It's mixed with the extraction of the absolute value. | ||
| 715 : | |||
| 716 : | edgomez | 1192 | ALIGN 16 |
| 717 : | edgomez | 1174 | dequant_mpeg_inter_3dne: |
| 718 : | edgomez | 1192 | mov edx, [esp+ 4] ; data |
| 719 : | mov ecx, [esp+ 8] ; coeff | ||
| 720 : | mov eax, [esp+12] ; quant | ||
| 721 : | movq mm7, [mmx_mul_quant + eax*8 - 8] | ||
| 722 : | mov eax, -14 | ||
| 723 : | paddw mm7, mm7 ; << 1 | ||
| 724 : | pxor mm6, mm6 ; mismatch sum | ||
| 725 : | push esi | ||
| 726 : | mov esi, mmzero | ||
| 727 : | pxor mm1, mm1 | ||
| 728 : | pxor mm3, mm3 | ||
| 729 : | nop | ||
| 730 : | nop4 | ||
| 731 : | edgomez | 1174 | |
| 732 : | edgomez | 1192 | ALIGN 16 |
| 733 : | edgomez | 1174 | .loop |
| 734 : | edgomez | 1192 | movq mm0, [ecx+8*eax + 7*16 ] ; mm0 = coeff[i] |
| 735 : | pcmpgtw mm1, mm0 ; mm1 = sgn(c) (preserved) | ||
| 736 : | movq mm2, [ecx+8*eax + 7*16 +8] ; mm2 = coeff[i+1] | ||
| 737 : | pcmpgtw mm3, mm2 ; mm3 = sgn(c') (preserved) | ||
| 738 : | paddsw mm0, mm1 ; c += sgn(c) | ||
| 739 : | paddsw mm2, mm3 ; c += sgn(c') | ||
| 740 : | paddw mm0, mm0 ; c *= 2 | ||
| 741 : | paddw mm2, mm2 ; c'*= 2 | ||
| 742 : | edgomez | 1174 | |
| 743 : | edgomez | 1192 | movq mm4, [esi] |
| 744 : | movq mm5, [esi] | ||
| 745 : | psubw mm4, mm0 ; -c | ||
| 746 : | psubw mm5, mm2 ; -c' | ||
| 747 : | edgomez | 1174 | |
| 748 : | edgomez | 1192 | psraw mm4, 16 ; mm4 = sgn(-c) |
| 749 : | psraw mm5, 16 ; mm5 = sgn(-c') | ||
| 750 : | psubsw mm0, mm4 ; c -= sgn(-c) | ||
| 751 : | psubsw mm2, mm5 ; c' -= sgn(-c') | ||
| 752 : | pxor mm0, mm1 ; finish changing sign if needed | ||
| 753 : | pxor mm2, mm3 ; finish changing sign if needed | ||
| 754 : | edgomez | 1174 | |
| 755 : | edgomez | 1192 | ; we're short on register, here. Poor pairing... |
| 756 : | edgomez | 1174 | |
| 757 : | edgomez | 1192 | movq mm4, mm7 ; (matrix*quant) |
| 758 : | nop | ||
| 759 : | pmullw mm4, [inter_matrix + 8*eax + 7*16] | ||
| 760 : | movq mm5, mm4 | ||
| 761 : | pmulhw mm5, mm0 ; high of c*(matrix*quant) | ||
| 762 : | pmullw mm0, mm4 ; low of c*(matrix*quant) | ||
| 763 : | edgomez | 1174 | |
| 764 : | edgomez | 1192 | movq mm4, mm7 ; (matrix*quant) |
| 765 : | pmullw mm4, [inter_matrix + 8*eax + 7*16 + 8] | ||
| 766 : | add eax, byte 2 | ||
| 767 : | edgomez | 1174 | |
| 768 : | edgomez | 1192 | pcmpgtw mm5, [esi] |
| 769 : | paddusw mm0, mm5 | ||
| 770 : | psrlw mm0, 5 | ||
| 771 : | pxor mm0, mm1 ; start restoring sign | ||
| 772 : | psubusw mm1, mm5 | ||
| 773 : | edgomez | 1174 | |
| 774 : | edgomez | 1192 | movq mm5, mm4 |
| 775 : | pmulhw mm5, mm2 ; high of c*(matrix*quant) | ||
| 776 : | pmullw mm2, mm4 ; low of c*(matrix*quant) | ||
| 777 : | psubw mm0, mm1 ; finish restoring sign | ||
| 778 : | edgomez | 1174 | |
| 779 : | edgomez | 1192 | pcmpgtw mm5, [esi] |
| 780 : | paddusw mm2, mm5 | ||
| 781 : | psrlw mm2, 5 | ||
| 782 : | pxor mm2, mm3 ; start restoring sign | ||
| 783 : | psubusw mm3, mm5 | ||
| 784 : | psubw mm2, mm3 ; finish restoring sign | ||
| 785 : | movq mm1, [esi] | ||
| 786 : | movq mm3, [byte esi] | ||
| 787 : | pxor mm6, mm0 ; mismatch control | ||
| 788 : | movq [edx + 8*eax + 7*16 -2*8 ], mm0 ; data[i] | ||
| 789 : | pxor mm6, mm2 ; mismatch control | ||
| 790 : | movq [edx + 8*eax + 7*16 -2*8 +8], mm2 ; data[i+1] | ||
| 791 : | edgomez | 1174 | |
| 792 : | edgomez | 1192 | jng .loop |
| 793 : | nop | ||
| 794 : | edgomez | 1174 | |
| 795 : | edgomez | 1192 | ; mismatch control |
| 796 : | edgomez | 1174 | |
| 797 : | edgomez | 1192 | pshufw mm0, mm6, 01010101b |
| 798 : | pshufw mm1, mm6, 10101010b | ||
| 799 : | pshufw mm2, mm6, 11111111b | ||
| 800 : | pxor mm6, mm0 | ||
| 801 : | pxor mm1, mm2 | ||
| 802 : | pxor mm6, mm1 | ||
| 803 : | movd eax, mm6 | ||
| 804 : | and eax, byte 1 | ||
| 805 : | xor eax, byte 1 | ||
| 806 : | mov esi, [esp] | ||
| 807 : | add esp, byte 4 | ||
| 808 : | xor word [edx + 2*63], ax | ||
| 809 : | edgomez | 1174 | |
| 810 : | edgomez | 1192 | xor eax, eax |
| 811 : | ret |
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