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| 1 : | edgomez | 1382 | ;/***************************************************************************** |
| 2 : | Isibaar | 262 | ; * |
| 3 : | edgomez | 1382 | ; * XVID MPEG-4 VIDEO CODEC |
| 4 : | ; * - mmx 8x8 block-based halfpel interpolation - | ||
| 5 : | Isibaar | 262 | ; * |
| 6 : | edgomez | 1382 | ; * Copyright(C) 2002 Michael Militzer <isibaar@xvid.org> |
| 7 : | ; * 2002 Pascal Massimino <skal@planet-d.net> | ||
| 8 : | Isibaar | 262 | ; * |
| 9 : | edgomez | 1382 | ; * 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 : | Isibaar | 262 | ; * |
| 14 : | edgomez | 1382 | ; * 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 : | Isibaar | 262 | ; * |
| 19 : | edgomez | 1382 | ; * 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 : | Isibaar | 262 | ; * |
| 23 : | edgomez | 1382 | ; ****************************************************************************/ |
| 24 : | Isibaar | 262 | |
| 25 : | edgomez | 1382 | BITS 32 |
| 26 : | edgomez | 851 | |
| 27 : | edgomez | 1382 | %macro cglobal 1 |
| 28 : | Isibaar | 262 | %ifdef PREFIX |
| 29 : | edgomez | 1382 | global _%1 |
| 30 : | Isibaar | 262 | %define %1 _%1 |
| 31 : | %else | ||
| 32 : | global %1 | ||
| 33 : | %endif | ||
| 34 : | %endmacro | ||
| 35 : | |||
| 36 : | edgomez | 1382 | ;============================================================================= |
| 37 : | ; Read only data | ||
| 38 : | ;============================================================================= | ||
| 39 : | Isibaar | 262 | |
| 40 : | edgomez | 1382 | %ifdef FORMAT_COFF |
| 41 : | SECTION .rodata data | ||
| 42 : | %else | ||
| 43 : | SECTION .rodata data align=16 | ||
| 44 : | %endif | ||
| 45 : | Isibaar | 262 | |
| 46 : | edgomez | 1382 | ALIGN 16 |
| 47 : | mmx_one: | ||
| 48 : | times 8 db 1 | ||
| 49 : | Isibaar | 262 | |
| 50 : | edgomez | 1382 | SECTION .text |
| 51 : | Isibaar | 262 | |
| 52 : | cglobal interpolate8x8_halfpel_h_xmm | ||
| 53 : | cglobal interpolate8x8_halfpel_v_xmm | ||
| 54 : | cglobal interpolate8x8_halfpel_hv_xmm | ||
| 55 : | |||
| 56 : | ;=========================================================================== | ||
| 57 : | ; | ||
| 58 : | ; void interpolate8x8_halfpel_h_xmm(uint8_t * const dst, | ||
| 59 : | ; const uint8_t * const src, | ||
| 60 : | ; const uint32_t stride, | ||
| 61 : | ; const uint32_t rounding); | ||
| 62 : | ; | ||
| 63 : | ;=========================================================================== | ||
| 64 : | |||
| 65 : | %macro COPY_H_SSE_RND0 0 | ||
| 66 : | movq mm0, [eax] | ||
| 67 : | pavgb mm0, [eax+1] | ||
| 68 : | movq mm1, [eax+edx] | ||
| 69 : | pavgb mm1, [eax+edx+1] | ||
| 70 : | lea eax,[eax+2*edx] | ||
| 71 : | movq [ecx],mm0 | ||
| 72 : | movq [ecx+edx],mm1 | ||
| 73 : | %endmacro | ||
| 74 : | |||
| 75 : | %macro COPY_H_SSE_RND1 0 | ||
| 76 : | movq mm0, [eax] | ||
| 77 : | movq mm1, [eax+edx] | ||
| 78 : | movq mm4, mm0 | ||
| 79 : | movq mm5, mm1 | ||
| 80 : | edgomez | 1382 | movq mm2, [eax+1] |
| 81 : | Isibaar | 262 | movq mm3, [eax+edx+1] |
| 82 : | pavgb mm0, mm2 | ||
| 83 : | pxor mm2, mm4 | ||
| 84 : | pavgb mm1, mm3 | ||
| 85 : | edgomez | 1382 | lea eax, [eax+2*edx] |
| 86 : | Isibaar | 262 | pxor mm3, mm5 |
| 87 : | pand mm2, mm7 | ||
| 88 : | pand mm3, mm7 | ||
| 89 : | psubb mm0, mm2 | ||
| 90 : | movq [ecx], mm0 | ||
| 91 : | psubb mm1, mm3 | ||
| 92 : | edgomez | 1382 | movq [ecx+edx], mm1 |
| 93 : | Isibaar | 262 | %endmacro |
| 94 : | |||
| 95 : | edgomez | 1382 | ALIGN 16 |
| 96 : | Isibaar | 262 | interpolate8x8_halfpel_h_xmm: |
| 97 : | |||
| 98 : | edgomez | 1382 | mov eax, [esp+16] ; rounding |
| 99 : | mov ecx, [esp+ 4] ; Dst | ||
| 100 : | Isibaar | 262 | test eax,eax |
| 101 : | edgomez | 1382 | mov eax, [esp+ 8] ; Src |
| 102 : | mov edx, [esp+12] ; stride | ||
| 103 : | Isibaar | 262 | |
| 104 : | jnz near .rounding1 | ||
| 105 : | |||
| 106 : | COPY_H_SSE_RND0 | ||
| 107 : | lea ecx,[ecx+2*edx] | ||
| 108 : | COPY_H_SSE_RND0 | ||
| 109 : | lea ecx,[ecx+2*edx] | ||
| 110 : | COPY_H_SSE_RND0 | ||
| 111 : | lea ecx,[ecx+2*edx] | ||
| 112 : | COPY_H_SSE_RND0 | ||
| 113 : | ret | ||
| 114 : | |||
| 115 : | .rounding1 | ||
| 116 : | edgomez | 1382 | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 |
| 117 : | Isibaar | 262 | movq mm7, [mmx_one] |
| 118 : | COPY_H_SSE_RND1 | ||
| 119 : | lea ecx, [ecx+2*edx] | ||
| 120 : | COPY_H_SSE_RND1 | ||
| 121 : | lea ecx,[ecx+2*edx] | ||
| 122 : | COPY_H_SSE_RND1 | ||
| 123 : | lea ecx,[ecx+2*edx] | ||
| 124 : | COPY_H_SSE_RND1 | ||
| 125 : | ret | ||
| 126 : | |||
| 127 : | ;=========================================================================== | ||
| 128 : | ; | ||
| 129 : | ; void interpolate8x8_halfpel_v_xmm(uint8_t * const dst, | ||
| 130 : | edgomez | 1382 | ; const uint8_t * const src, |
| 131 : | ; const uint32_t stride, | ||
| 132 : | ; const uint32_t rounding); | ||
| 133 : | Isibaar | 262 | ; |
| 134 : | ;=========================================================================== | ||
| 135 : | |||
| 136 : | %macro COPY_V_SSE_RND0 0 | ||
| 137 : | edgomez | 1382 | movq mm0, [eax] |
| 138 : | movq mm1, [eax+edx] | ||
| 139 : | Isibaar | 262 | pavgb mm0, mm1 |
| 140 : | pavgb mm1, [eax+2*edx] | ||
| 141 : | edgomez | 1382 | lea eax, [eax+2*edx] |
| 142 : | movq [ecx], mm0 | ||
| 143 : | Isibaar | 262 | movq [ecx+edx],mm1 |
| 144 : | %endmacro | ||
| 145 : | |||
| 146 : | %macro COPY_V_SSE_RND1 0 | ||
| 147 : | movq mm0, mm2 | ||
| 148 : | movq mm1, [eax] | ||
| 149 : | movq mm2, [eax+edx] | ||
| 150 : | lea eax,[eax+2*edx] | ||
| 151 : | movq mm4, mm0 | ||
| 152 : | movq mm5, mm1 | ||
| 153 : | pavgb mm0, mm1 | ||
| 154 : | edgomez | 1382 | pxor mm4, mm1 |
| 155 : | Isibaar | 262 | pavgb mm1, mm2 |
| 156 : | pxor mm5, mm2 | ||
| 157 : | edgomez | 1382 | pand mm4, mm7 ; lsb's of (i^j)... |
| 158 : | pand mm5, mm7 ; lsb's of (i^j)... | ||
| 159 : | psubb mm0, mm4 ; ...are substracted from result of pavgb | ||
| 160 : | Isibaar | 262 | movq [ecx], mm0 |
| 161 : | edgomez | 1382 | psubb mm1, mm5 ; ...are substracted from result of pavgb |
| 162 : | Isibaar | 262 | movq [ecx+edx], mm1 |
| 163 : | %endmacro | ||
| 164 : | |||
| 165 : | edgomez | 1382 | ALIGN 16 |
| 166 : | Isibaar | 262 | interpolate8x8_halfpel_v_xmm: |
| 167 : | |||
| 168 : | mov eax, [esp+16]; rounding | ||
| 169 : | edgomez | 1382 | mov ecx, [esp+ 4] ; Dst |
| 170 : | Isibaar | 262 | test eax,eax |
| 171 : | edgomez | 1382 | mov eax, [esp+ 8] ; Src |
| 172 : | mov edx, [esp+12] ; stride | ||
| 173 : | Isibaar | 262 | |
| 174 : | edgomez | 1382 | ; we process 2 line at a time |
| 175 : | Isibaar | 262 | jnz near .rounding1 |
| 176 : | |||
| 177 : | COPY_V_SSE_RND0 | ||
| 178 : | lea ecx, [ecx+2*edx] | ||
| 179 : | COPY_V_SSE_RND0 | ||
| 180 : | lea ecx, [ecx+2*edx] | ||
| 181 : | COPY_V_SSE_RND0 | ||
| 182 : | lea ecx, [ecx+2*edx] | ||
| 183 : | COPY_V_SSE_RND0 | ||
| 184 : | ret | ||
| 185 : | |||
| 186 : | .rounding1 | ||
| 187 : | edgomez | 1382 | ; we use: (i+j)/2 = ( i+j+1 )/2 - (i^j)&1 |
| 188 : | Isibaar | 262 | movq mm7, [mmx_one] |
| 189 : | edgomez | 1382 | movq mm2, [eax] ; loop invariant |
| 190 : | Isibaar | 262 | add eax, edx |
| 191 : | |||
| 192 : | COPY_V_SSE_RND1 | ||
| 193 : | lea ecx,[ecx+2*edx] | ||
| 194 : | COPY_V_SSE_RND1 | ||
| 195 : | lea ecx,[ecx+2*edx] | ||
| 196 : | COPY_V_SSE_RND1 | ||
| 197 : | lea ecx,[ecx+2*edx] | ||
| 198 : | COPY_V_SSE_RND1 | ||
| 199 : | ret | ||
| 200 : | |||
| 201 : | ;=========================================================================== | ||
| 202 : | ; | ||
| 203 : | ; void interpolate8x8_halfpel_hv_xmm(uint8_t * const dst, | ||
| 204 : | edgomez | 1382 | ; const uint8_t * const src, |
| 205 : | ; const uint32_t stride, | ||
| 206 : | ; const uint32_t rounding); | ||
| 207 : | Isibaar | 262 | ; |
| 208 : | ; | ||
| 209 : | ;=========================================================================== | ||
| 210 : | |||
| 211 : | ; The trick is to correct the result of 'pavgb' with some combination of the | ||
| 212 : | ; lsb's of the 4 input values i,j,k,l, and their intermediate 'pavgb' (s and t). | ||
| 213 : | ; The boolean relations are: | ||
| 214 : | edgomez | 1382 | ; (i+j+k+l+3)/4 = (s+t+1)/2 - (ij&kl)&st |
| 215 : | Isibaar | 262 | ; (i+j+k+l+2)/4 = (s+t+1)/2 - (ij|kl)&st |
| 216 : | ; (i+j+k+l+1)/4 = (s+t+1)/2 - (ij&kl)|st | ||
| 217 : | ; (i+j+k+l+0)/4 = (s+t+1)/2 - (ij|kl)|st | ||
| 218 : | ; with s=(i+j+1)/2, t=(k+l+1)/2, ij = i^j, kl = k^l, st = s^t. | ||
| 219 : | |||
| 220 : | ; Moreover, we process 2 lines at a times, for better overlapping (~15% faster). | ||
| 221 : | |||
| 222 : | %macro COPY_HV_SSE_RND0 0 | ||
| 223 : | edgomez | 1382 | lea eax, [eax+edx] |
| 224 : | Isibaar | 262 | |
| 225 : | edgomez | 1382 | movq mm0, [eax] |
| 226 : | movq mm1, [eax+1] | ||
| 227 : | Isibaar | 262 | |
| 228 : | edgomez | 1382 | movq mm6, mm0 |
| 229 : | pavgb mm0, mm1 ; mm0=(j+k+1)/2. preserved for next step | ||
| 230 : | lea eax, [eax+edx] | ||
| 231 : | pxor mm1, mm6 ; mm1=(j^k). preserved for next step | ||
| 232 : | Isibaar | 262 | |
| 233 : | edgomez | 1382 | por mm3, mm1 ; ij |= jk |
| 234 : | movq mm6, mm2 | ||
| 235 : | pxor mm6, mm0 ; mm6 = s^t | ||
| 236 : | pand mm3, mm6 ; (ij|jk) &= st | ||
| 237 : | pavgb mm2, mm0 ; mm2 = (s+t+1)/2 | ||
| 238 : | pand mm3, mm7 ; mask lsb | ||
| 239 : | psubb mm2, mm3 ; apply. | ||
| 240 : | Isibaar | 262 | |
| 241 : | edgomez | 1382 | movq [ecx], mm2 |
| 242 : | Isibaar | 262 | |
| 243 : | edgomez | 1382 | movq mm2, [eax] |
| 244 : | movq mm3, [eax+1] | ||
| 245 : | movq mm6, mm2 | ||
| 246 : | pavgb mm2, mm3 ; preserved for next iteration | ||
| 247 : | lea ecx,[ecx+edx] | ||
| 248 : | pxor mm3, mm6 ; preserved for next iteration | ||
| 249 : | Isibaar | 262 | |
| 250 : | edgomez | 1382 | por mm1, mm3 |
| 251 : | movq mm6, mm0 | ||
| 252 : | pxor mm6, mm2 | ||
| 253 : | pand mm1, mm6 | ||
| 254 : | pavgb mm0, mm2 | ||
| 255 : | Isibaar | 262 | |
| 256 : | edgomez | 1382 | pand mm1, mm7 |
| 257 : | psubb mm0, mm1 | ||
| 258 : | Isibaar | 262 | |
| 259 : | edgomez | 1382 | movq [ecx], mm0 |
| 260 : | Isibaar | 262 | %endmacro |
| 261 : | |||
| 262 : | %macro COPY_HV_SSE_RND1 0 | ||
| 263 : | edgomez | 1382 | lea eax, [eax+edx] |
| 264 : | Isibaar | 262 | |
| 265 : | edgomez | 1382 | movq mm0, [eax] |
| 266 : | movq mm1, [eax+1] | ||
| 267 : | Isibaar | 262 | |
| 268 : | edgomez | 1382 | movq mm6, mm0 |
| 269 : | pavgb mm0, mm1 ; mm0=(j+k+1)/2. preserved for next step | ||
| 270 : | lea eax, [eax+edx] | ||
| 271 : | pxor mm1, mm6 ; mm1=(j^k). preserved for next step | ||
| 272 : | Isibaar | 262 | |
| 273 : | edgomez | 1382 | pand mm3, mm1 |
| 274 : | movq mm6, mm2 | ||
| 275 : | pxor mm6, mm0 | ||
| 276 : | por mm3, mm6 | ||
| 277 : | pavgb mm2, mm0 | ||
| 278 : | pand mm3, mm7 | ||
| 279 : | psubb mm2, mm3 | ||
| 280 : | Isibaar | 262 | |
| 281 : | edgomez | 1382 | movq [ecx], mm2 |
| 282 : | Isibaar | 262 | |
| 283 : | edgomez | 1382 | movq mm2, [eax] |
| 284 : | movq mm3, [eax+1] | ||
| 285 : | movq mm6, mm2 | ||
| 286 : | pavgb mm2, mm3 ; preserved for next iteration | ||
| 287 : | lea ecx,[ecx+edx] | ||
| 288 : | pxor mm3, mm6 ; preserved for next iteration | ||
| 289 : | Isibaar | 262 | |
| 290 : | edgomez | 1382 | pand mm1, mm3 |
| 291 : | movq mm6, mm0 | ||
| 292 : | pxor mm6, mm2 | ||
| 293 : | por mm1, mm6 | ||
| 294 : | pavgb mm0, mm2 | ||
| 295 : | pand mm1, mm7 | ||
| 296 : | psubb mm0, mm1 | ||
| 297 : | Isibaar | 262 | |
| 298 : | edgomez | 1382 | movq [ecx], mm0 |
| 299 : | Isibaar | 262 | %endmacro |
| 300 : | |||
| 301 : | edgomez | 1382 | ALIGN 16 |
| 302 : | Isibaar | 262 | interpolate8x8_halfpel_hv_xmm: |
| 303 : | edgomez | 1382 | mov eax, [esp+16] ; rounding |
| 304 : | mov ecx, [esp+ 4] ; Dst | ||
| 305 : | test eax, eax | ||
| 306 : | mov eax, [esp+ 8] ; Src | ||
| 307 : | mov edx, [esp+12] ; stride | ||
| 308 : | Isibaar | 262 | |
| 309 : | movq mm7, [mmx_one] | ||
| 310 : | |||
| 311 : | ; loop invariants: mm2=(i+j+1)/2 and mm3= i^j | ||
| 312 : | movq mm2, [eax] | ||
| 313 : | movq mm3, [eax+1] | ||
| 314 : | movq mm6, mm2 | ||
| 315 : | pavgb mm2, mm3 | ||
| 316 : | edgomez | 1382 | pxor mm3, mm6 ; mm2/mm3 ready |
| 317 : | Isibaar | 262 | |
| 318 : | jnz near .rounding1 | ||
| 319 : | |||
| 320 : | COPY_HV_SSE_RND0 | ||
| 321 : | add ecx, edx | ||
| 322 : | COPY_HV_SSE_RND0 | ||
| 323 : | add ecx, edx | ||
| 324 : | COPY_HV_SSE_RND0 | ||
| 325 : | add ecx, edx | ||
| 326 : | COPY_HV_SSE_RND0 | ||
| 327 : | ret | ||
| 328 : | |||
| 329 : | .rounding1 | ||
| 330 : | COPY_HV_SSE_RND1 | ||
| 331 : | add ecx, edx | ||
| 332 : | COPY_HV_SSE_RND1 | ||
| 333 : | add ecx, edx | ||
| 334 : | COPY_HV_SSE_RND1 | ||
| 335 : | add ecx, edx | ||
| 336 : | COPY_HV_SSE_RND1 | ||
| 337 : | edgomez | 1382 | ret |
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