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| 1 : | edgomez | 1413 | /* |
| 2 : | |||
| 3 : | Copyright (C) 2002 Benjamin Herrenschmidt <benh@kernel.crashing.org> | ||
| 4 : | |||
| 5 : | This program is free software; you can redistribute it and/or modify | ||
| 6 : | it under the terms of the GNU General Public License as published by | ||
| 7 : | the Free Software Foundation; either version 2 of the License, or | ||
| 8 : | (at your option) any later version. | ||
| 9 : | |||
| 10 : | This program is distributed in the hope that it will be useful, | ||
| 11 : | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 12 : | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 13 : | GNU General Public License for more details. | ||
| 14 : | |||
| 15 : | You should have received a copy of the GNU General Public License | ||
| 16 : | along with this program; if not, write to the Free Software | ||
| 17 : | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 18 : | |||
| 19 : | |||
| 20 : | $Id: sad_altivec.c,v 1.9 2004-04-05 20:39:49 edgomez Exp $ | ||
| 21 : | $Source: /home/xvid/cvs_copy/cvs-server-root/xvid/xvidcore/src/motion/ppc_asm/sad_altivec.c,v $ | ||
| 22 : | $Date: 2004-04-05 20:39:49 $ | ||
| 23 : | $Author: edgomez $ | ||
| 24 : | |||
| 25 : | */ | ||
| 26 : | |||
| 27 : | #ifdef HAVE_ALTIVEC_H | ||
| 28 : | #include <altivec.h> | ||
| 29 : | #endif | ||
| 30 : | |||
| 31 : | |||
| 32 : | #include "../../portab.h" | ||
| 33 : | |||
| 34 : | /* no debugging by default */ | ||
| 35 : | #undef DEBUG | ||
| 36 : | |||
| 37 : | #include <stdio.h> | ||
| 38 : | |||
| 39 : | #define SAD16() \ | ||
| 40 : | t1 = vec_perm(ref[0], ref[1], perm); /* align current vector */ \ | ||
| 41 : | t2 = vec_max(t1, *cur); /* find largest of two */ \ | ||
| 42 : | t1 = vec_min(t1, *cur); /* find smaller of two */ \ | ||
| 43 : | t1 = vec_sub(t2, t1); /* find absolute difference */ \ | ||
| 44 : | sad = vec_sum4s(t1, vec_splat_u32(0)); /* sum of differences */ \ | ||
| 45 : | sumdiffs = (vector unsigned int)vec_sums((vector signed int)sad, (vector signed int)sumdiffs); /* accumulate sumdiffs */ \ | ||
| 46 : | if(vec_any_ge(sumdiffs, best_vec)) \ | ||
| 47 : | goto bail; \ | ||
| 48 : | cur += stride; ref += stride; | ||
| 49 : | |||
| 50 : | /* | ||
| 51 : | * This function assumes cur and stride are 16 bytes aligned and ref is unaligned | ||
| 52 : | */ | ||
| 53 : | unsigned long | ||
| 54 : | sad16_altivec_c(const vector unsigned char *cur, | ||
| 55 : | const vector unsigned char *ref, | ||
| 56 : | unsigned long stride, | ||
| 57 : | const unsigned long best_sad) | ||
| 58 : | { | ||
| 59 : | vector unsigned char perm; | ||
| 60 : | vector unsigned char t1, t2; | ||
| 61 : | vector unsigned int sad; | ||
| 62 : | vector unsigned int sumdiffs; | ||
| 63 : | vector unsigned int best_vec; | ||
| 64 : | unsigned long result; | ||
| 65 : | |||
| 66 : | |||
| 67 : | #ifdef DEBUG | ||
| 68 : | /* print alignment errors if DEBUG is on */ | ||
| 69 : | if (((unsigned long) cur) & 0xf) | ||
| 70 : | fprintf(stderr, "sad16_altivec:incorrect align, cur: %x\n", cur); | ||
| 71 : | if (stride & 0xf) | ||
| 72 : | fprintf(stderr, "sad16_altivec:incorrect align, stride: %x\n", stride); | ||
| 73 : | #endif | ||
| 74 : | /* initialization */ | ||
| 75 : | sad = vec_splat_u32(0); | ||
| 76 : | sumdiffs = sad; | ||
| 77 : | stride >>= 4; | ||
| 78 : | perm = vec_lvsl(0, (unsigned char *) ref); | ||
| 79 : | *((unsigned long *) &best_vec) = best_sad; | ||
| 80 : | best_vec = vec_splat(best_vec, 0); | ||
| 81 : | |||
| 82 : | /* perform sum of differences between current and previous */ | ||
| 83 : | SAD16(); | ||
| 84 : | SAD16(); | ||
| 85 : | SAD16(); | ||
| 86 : | SAD16(); | ||
| 87 : | |||
| 88 : | SAD16(); | ||
| 89 : | SAD16(); | ||
| 90 : | SAD16(); | ||
| 91 : | SAD16(); | ||
| 92 : | |||
| 93 : | SAD16(); | ||
| 94 : | SAD16(); | ||
| 95 : | SAD16(); | ||
| 96 : | SAD16(); | ||
| 97 : | |||
| 98 : | SAD16(); | ||
| 99 : | SAD16(); | ||
| 100 : | SAD16(); | ||
| 101 : | SAD16(); | ||
| 102 : | |||
| 103 : | bail: | ||
| 104 : | /* copy vector sum into unaligned result */ | ||
| 105 : | sumdiffs = vec_splat(sumdiffs, 3); | ||
| 106 : | vec_ste(sumdiffs, 0, (unsigned long *) &result); | ||
| 107 : | return result; | ||
| 108 : | } | ||
| 109 : | |||
| 110 : | |||
| 111 : | #define SAD8() \ | ||
| 112 : | t1 = vec_perm(cur[0], cur[stride], perm_cur); /* align current vector */ \ | ||
| 113 : | t2 = vec_perm(ref[0], ref[1], perm_ref1); /* align current vector */ \ | ||
| 114 : | tp = vec_perm(ref[stride], ref[stride+1], perm_ref1); /* align current vector */ \ | ||
| 115 : | t2 = vec_perm(t2,tp,perm_ref2); \ | ||
| 116 : | tp = vec_max(t1, t2); /* find largest of two */ \ | ||
| 117 : | t1 = vec_min(t1, t2); /* find smaller of two */ \ | ||
| 118 : | tp = vec_sub(tp, t1); /* find absolute difference */ \ | ||
| 119 : | sad = vec_sum4s(tp, sad); /* accumulate sum of differences */ \ | ||
| 120 : | cur += stride<<1; ref += stride<<1; | ||
| 121 : | |||
| 122 : | /* | ||
| 123 : | * This function assumes cur is 8 bytes aligned, stride is 16 bytes | ||
| 124 : | * aligned and ref is unaligned | ||
| 125 : | */ | ||
| 126 : | unsigned long | ||
| 127 : | sad8_altivec_c(const vector unsigned char *cur, | ||
| 128 : | const vector unsigned char *ref, | ||
| 129 : | unsigned long stride) | ||
| 130 : | { | ||
| 131 : | vector unsigned char t1, t2, tp; | ||
| 132 : | vector unsigned int sad; | ||
| 133 : | vector unsigned int sumdiffs; | ||
| 134 : | vector unsigned char perm_cur; | ||
| 135 : | vector unsigned char perm_ref1, perm_ref2; | ||
| 136 : | unsigned long result; | ||
| 137 : | |||
| 138 : | #ifdef DEBUG | ||
| 139 : | /* print alignment errors if DEBUG is on */ | ||
| 140 : | if (((unsigned long) cur) & 0x7) | ||
| 141 : | fprintf(stderr, "sad8_altivec:incorrect align, cur: %x\n", cur); | ||
| 142 : | if (stride & 0xf) | ||
| 143 : | fprintf(stderr, "sad8_altivec:incorrect align, stride: %x\n", stride); | ||
| 144 : | #endif | ||
| 145 : | |||
| 146 : | /* check if cur is 8 or 16 bytes aligned an create the perm_cur vector */ | ||
| 147 : | perm_ref1 = vec_lvsl(0, (unsigned char*)ref); | ||
| 148 : | perm_ref2 = vec_add(vec_lvsl(0, (unsigned char*)NULL), vec_pack(vec_splat_u16(0), vec_splat_u16(8))); | ||
| 149 : | perm_cur = vec_add(perm_ref2, vec_splat(vec_lvsl(0, (unsigned char*)cur), 0)); | ||
| 150 : | |||
| 151 : | /* initialization */ | ||
| 152 : | sad = vec_splat_u32(0); | ||
| 153 : | stride >>= 4; | ||
| 154 : | |||
| 155 : | /* perform sum of differences between current and previous */ | ||
| 156 : | SAD8(); | ||
| 157 : | SAD8(); | ||
| 158 : | SAD8(); | ||
| 159 : | SAD8(); | ||
| 160 : | |||
| 161 : | /* sum all parts of difference into one 32 bit quantity */ | ||
| 162 : | sumdiffs = (vector unsigned int)vec_sums((vector signed int) sad, vec_splat_s32(0)); | ||
| 163 : | |||
| 164 : | /* copy vector sum into unaligned result */ | ||
| 165 : | sumdiffs = vec_splat(sumdiffs, 3); | ||
| 166 : | vec_ste(sumdiffs, 0, (unsigned int *) &result); | ||
| 167 : | return result; | ||
| 168 : | } | ||
| 169 : | |||
| 170 : | |||
| 171 : | #define MEAN16() \ | ||
| 172 : | mean = vec_sum4s(*ptr,mean);\ | ||
| 173 : | ptr += stride | ||
| 174 : | |||
| 175 : | #define DEV16() \ | ||
| 176 : | t2 = vec_max(*ptr, mn); /* find largest of two */ \ | ||
| 177 : | t3 = vec_min(*ptr, mn); /* find smaller of two */ \ | ||
| 178 : | t2 = vec_sub(t2, t3); /* find absolute difference */ \ | ||
| 179 : | dev = vec_sum4s(t2, dev); \ | ||
| 180 : | ptr += stride | ||
| 181 : | |||
| 182 : | /* | ||
| 183 : | * This function assumes cur is 16 bytes aligned and stride is 16 bytes | ||
| 184 : | * aligned | ||
| 185 : | */ | ||
| 186 : | unsigned long | ||
| 187 : | dev16_altivec_c(const vector unsigned char *cur, | ||
| 188 : | unsigned long stride) | ||
| 189 : | { | ||
| 190 : | vector unsigned char t2, t3, mn; | ||
| 191 : | vector unsigned int mean, dev; | ||
| 192 : | vector unsigned int sumdiffs; | ||
| 193 : | const vector unsigned char *ptr; | ||
| 194 : | unsigned long result; | ||
| 195 : | |||
| 196 : | #ifdef DEBUG | ||
| 197 : | /* print alignment errors if DEBUG is on */ | ||
| 198 : | if(((unsigned long)cur) & 0x7) | ||
| 199 : | fprintf(stderr, "dev16_altivec:incorrect align, cur: %x\n", cur); | ||
| 200 : | if(stride & 0xf) | ||
| 201 : | fprintf(stderr, "dev16_altivec:incorrect align, stride: %ld\n", stride); | ||
| 202 : | #endif | ||
| 203 : | |||
| 204 : | dev = mean = vec_splat_u32(0); | ||
| 205 : | stride >>= 4; | ||
| 206 : | |||
| 207 : | /* set pointer to iterate through cur */ | ||
| 208 : | ptr = cur; | ||
| 209 : | |||
| 210 : | MEAN16(); | ||
| 211 : | MEAN16(); | ||
| 212 : | MEAN16(); | ||
| 213 : | MEAN16(); | ||
| 214 : | MEAN16(); | ||
| 215 : | MEAN16(); | ||
| 216 : | MEAN16(); | ||
| 217 : | MEAN16(); | ||
| 218 : | MEAN16(); | ||
| 219 : | MEAN16(); | ||
| 220 : | MEAN16(); | ||
| 221 : | MEAN16(); | ||
| 222 : | MEAN16(); | ||
| 223 : | MEAN16(); | ||
| 224 : | MEAN16(); | ||
| 225 : | MEAN16(); | ||
| 226 : | |||
| 227 : | /* Add all together in sumdiffs */ | ||
| 228 : | sumdiffs = (vector unsigned int)vec_sums((vector signed int) mean, vec_splat_s32(0)); | ||
| 229 : | /* teilen durch 16 * 16 */ | ||
| 230 : | mn = vec_perm((vector unsigned char)sumdiffs, (vector unsigned char)sumdiffs, vec_splat_u8(14)); | ||
| 231 : | |||
| 232 : | /* set pointer to iterate through cur */ | ||
| 233 : | ptr = cur; | ||
| 234 : | |||
| 235 : | DEV16(); | ||
| 236 : | DEV16(); | ||
| 237 : | DEV16(); | ||
| 238 : | DEV16(); | ||
| 239 : | DEV16(); | ||
| 240 : | DEV16(); | ||
| 241 : | DEV16(); | ||
| 242 : | DEV16(); | ||
| 243 : | DEV16(); | ||
| 244 : | DEV16(); | ||
| 245 : | DEV16(); | ||
| 246 : | DEV16(); | ||
| 247 : | DEV16(); | ||
| 248 : | DEV16(); | ||
| 249 : | DEV16(); | ||
| 250 : | DEV16(); | ||
| 251 : | |||
| 252 : | /* sum all parts of difference into one 32 bit quantity */ | ||
| 253 : | sumdiffs = (vector unsigned int)vec_sums((vector signed int) dev, vec_splat_s32(0)); | ||
| 254 : | |||
| 255 : | /* copy vector sum into unaligned result */ | ||
| 256 : | sumdiffs = vec_splat(sumdiffs, 3); | ||
| 257 : | vec_ste(sumdiffs, 0, (unsigned int *) &result); | ||
| 258 : | return result; | ||
| 259 : | } | ||
| 260 : | |||
| 261 : | #define SAD16BI() \ | ||
| 262 : | t1 = vec_perm(ref1[0], ref1[1], mask1); \ | ||
| 263 : | t2 = vec_perm(ref2[0], ref2[1], mask2); \ | ||
| 264 : | t1 = vec_avg(t1, t2); \ | ||
| 265 : | t2 = vec_max(t1, *cur); \ | ||
| 266 : | t1 = vec_min(t1, *cur); \ | ||
| 267 : | sad = vec_sub(t2, t1); \ | ||
| 268 : | sum = vec_sum4s(sad, sum); \ | ||
| 269 : | cur += stride; \ | ||
| 270 : | ref1 += stride; \ | ||
| 271 : | ref2 += stride | ||
| 272 : | |||
| 273 : | /* | ||
| 274 : | * This function assumes cur is 16 bytes aligned, stride is 16 bytes | ||
| 275 : | * aligned and ref1 and ref2 is unaligned | ||
| 276 : | */ | ||
| 277 : | unsigned long | ||
| 278 : | sad16bi_altivec_c(vector unsigned char *cur, | ||
| 279 : | vector unsigned char *ref1, | ||
| 280 : | vector unsigned char *ref2, | ||
| 281 : | unsigned long stride) | ||
| 282 : | { | ||
| 283 : | vector unsigned char t1, t2; | ||
| 284 : | vector unsigned char mask1, mask2; | ||
| 285 : | vector unsigned char sad; | ||
| 286 : | vector unsigned int sum; | ||
| 287 : | unsigned long result; | ||
| 288 : | |||
| 289 : | #ifdef DEBUG | ||
| 290 : | /* print alignment errors if this is on */ | ||
| 291 : | if(cur & 0xf) | ||
| 292 : | fprintf(stderr, "sad16bi_altivec:incorrect align, cur: %x\n", cur); | ||
| 293 : | if(stride & 0xf) | ||
| 294 : | fprintf(stderr, "sad16bi_altivec:incorrect align, cur: %ld\n", stride); | ||
| 295 : | #endif | ||
| 296 : | |||
| 297 : | /* Initialisation stuff */ | ||
| 298 : | stride >>= 4; | ||
| 299 : | mask1 = vec_lvsl(0, (unsigned char*)ref1); | ||
| 300 : | mask2 = vec_lvsl(0, (unsigned char*)ref2); | ||
| 301 : | sad = vec_splat_u8(0); | ||
| 302 : | sum = (vector unsigned int)sad; | ||
| 303 : | |||
| 304 : | SAD16BI(); | ||
| 305 : | SAD16BI(); | ||
| 306 : | SAD16BI(); | ||
| 307 : | SAD16BI(); | ||
| 308 : | |||
| 309 : | SAD16BI(); | ||
| 310 : | SAD16BI(); | ||
| 311 : | SAD16BI(); | ||
| 312 : | SAD16BI(); | ||
| 313 : | |||
| 314 : | SAD16BI(); | ||
| 315 : | SAD16BI(); | ||
| 316 : | SAD16BI(); | ||
| 317 : | SAD16BI(); | ||
| 318 : | |||
| 319 : | SAD16BI(); | ||
| 320 : | SAD16BI(); | ||
| 321 : | SAD16BI(); | ||
| 322 : | SAD16BI(); | ||
| 323 : | |||
| 324 : | sum = (vector unsigned int)vec_sums((vector signed int)sum, vec_splat_s32(0)); | ||
| 325 : | sum = vec_splat(sum, 3); | ||
| 326 : | vec_ste(sum, 0, (unsigned int*)&result); | ||
| 327 : | |||
| 328 : | return result; | ||
| 329 : | } | ||
| 330 : | |||
| 331 : | |||
| 332 : | #define SSE8_16BIT() \ | ||
| 333 : | b1_vec = vec_perm(vec_ld(0,b1), vec_ld(16,b1), vec_lvsl(0,b1)); \ | ||
| 334 : | b2_vec = vec_perm(vec_ld(0,b2), vec_ld(16,b2), vec_lvsl(0,b2)); \ | ||
| 335 : | diff = vec_sub(b1_vec,b2_vec); \ | ||
| 336 : | sum = vec_msum(diff,diff,sum); \ | ||
| 337 : | b1 = (const int16_t*)((int8_t*)b1+stride); \ | ||
| 338 : | b2 = (const int16_t*)((int8_t*)b2+stride) | ||
| 339 : | |||
| 340 : | uint32_t | ||
| 341 : | sse8_16bit_altivec_c(const int16_t * b1, | ||
| 342 : | const int16_t * b2, | ||
| 343 : | const uint32_t stride) | ||
| 344 : | { | ||
| 345 : | register vector signed short b1_vec; | ||
| 346 : | register vector signed short b2_vec; | ||
| 347 : | register vector signed short diff; | ||
| 348 : | register vector signed int sum; | ||
| 349 : | uint32_t result; | ||
| 350 : | |||
| 351 : | /* initialize */ | ||
| 352 : | sum = vec_splat_s32(0); | ||
| 353 : | |||
| 354 : | SSE8_16BIT(); | ||
| 355 : | SSE8_16BIT(); | ||
| 356 : | SSE8_16BIT(); | ||
| 357 : | SSE8_16BIT(); | ||
| 358 : | |||
| 359 : | SSE8_16BIT(); | ||
| 360 : | SSE8_16BIT(); | ||
| 361 : | SSE8_16BIT(); | ||
| 362 : | SSE8_16BIT(); | ||
| 363 : | |||
| 364 : | /* sum the vector */ | ||
| 365 : | sum = vec_sums(sum, vec_splat_s32(0)); | ||
| 366 : | sum = vec_splat(sum,3); | ||
| 367 : | |||
| 368 : | vec_ste(sum,0,(int*)&result); | ||
| 369 : | |||
| 370 : | /* and return */ | ||
| 371 : | return result; | ||
| 372 : | } |
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