Parent Directory
| 
Revision Log
Revision 1412 - (view) (download)
| 1 : | edgomez | 1412 | /***************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | * - 8x8 block-based halfpel interpolation with altivec optimization - | ||
| 5 : | * | ||
| 6 : | * Copyright(C) 2004 Christoph Naegeli <chn@kbw.ch> | ||
| 7 : | * | ||
| 8 : | * This program is free software ; you can redistribute it and/or modify | ||
| 9 : | * it under the terms of the GNU General Public License as published by | ||
| 10 : | * the Free Software Foundation ; either version 2 of the License, or | ||
| 11 : | * (at your option) any later version. | ||
| 12 : | * | ||
| 13 : | * This program is distributed in the hope that it will be useful, | ||
| 14 : | * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
| 15 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 16 : | * GNU General Public License for more details. | ||
| 17 : | * | ||
| 18 : | * You should have received a copy of the GNU General Public License | ||
| 19 : | * along with this program ; if not, write to the Free Software | ||
| 20 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 21 : | * | ||
| 22 : | * $Id: interpolate8x8_altivec.c,v 1.1 2004-04-05 20:36:36 edgomez Exp $ | ||
| 23 : | * | ||
| 24 : | ****************************************************************************/ | ||
| 25 : | |||
| 26 : | |||
| 27 : | #ifdef HAVE_ALTIVEC_H | ||
| 28 : | #include <altivec.h> | ||
| 29 : | #endif | ||
| 30 : | |||
| 31 : | #include "../../portab.h" | ||
| 32 : | |||
| 33 : | #undef DEBUG | ||
| 34 : | #include <stdio.h> | ||
| 35 : | |||
| 36 : | static inline unsigned | ||
| 37 : | build_prefetch(unsigned char block_size, unsigned char block_count, short stride) | ||
| 38 : | { | ||
| 39 : | if(block_size > 31) | ||
| 40 : | block_size = 0; | ||
| 41 : | |||
| 42 : | return ((block_size << 24) | (block_count << 16) | stride); | ||
| 43 : | } | ||
| 44 : | |||
| 45 : | #define NO_ROUNDING | ||
| 46 : | |||
| 47 : | #define ROUNDING \ | ||
| 48 : | s1 = vec_and(vec_add(s1, s2), vec_splat_u8(1)); \ | ||
| 49 : | d = vec_sub(d, s1); | ||
| 50 : | |||
| 51 : | #define INTERPLATE8X8_HALFPEL_H(round) \ | ||
| 52 : | s1 = vec_perm(vec_ld(0, src), vec_ld(16, src), vec_lvsl(0, src)); \ | ||
| 53 : | s2 = vec_perm(s1, s1, s2_mask); \ | ||
| 54 : | d = vec_avg(s1, s2); \ | ||
| 55 : | round; \ | ||
| 56 : | mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ | ||
| 57 : | d = vec_perm(d, d, vec_lvsl(0, dst)); \ | ||
| 58 : | d = vec_sel(d, vec_ld(0, dst), mask); \ | ||
| 59 : | vec_st(d, 0, dst); \ | ||
| 60 : | dst += stride; \ | ||
| 61 : | src += stride | ||
| 62 : | |||
| 63 : | |||
| 64 : | /* This function assumes: | ||
| 65 : | * dst is 8 byte aligned | ||
| 66 : | * src is unaligned | ||
| 67 : | * stride is a multiple of 8 | ||
| 68 : | */ | ||
| 69 : | void | ||
| 70 : | interpolate8x8_halfpel_h_altivec_c( uint8_t *dst, | ||
| 71 : | uint8_t *src, | ||
| 72 : | const uint32_t stride, | ||
| 73 : | const uint32_t rounding) | ||
| 74 : | { | ||
| 75 : | register vector unsigned char s1, s2; | ||
| 76 : | register vector unsigned char d; | ||
| 77 : | register vector unsigned char mask; | ||
| 78 : | register vector unsigned char s2_mask; | ||
| 79 : | register vector unsigned char mask_stencil; | ||
| 80 : | |||
| 81 : | #ifdef DEBUG | ||
| 82 : | /* Dump alignment errors if DEBUG is defined */ | ||
| 83 : | if(((unsigned long)dst) & 0x7) | ||
| 84 : | fprintf(stderr, "interpolate8x8_halfpel_h_altivec_c:incorrect align, dst: %x\n", dst); | ||
| 85 : | if(stride & 0x7) | ||
| 86 : | fprintf(stderr, "interpolate8x8_halfpel_h_altivec_c:incorrect stride, stride: %u\n", stride); | ||
| 87 : | #endif | ||
| 88 : | |||
| 89 : | s2_mask = vec_lvsl(1, (unsigned char*)0); | ||
| 90 : | mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); | ||
| 91 : | |||
| 92 : | if(rounding) { | ||
| 93 : | INTERPLATE8X8_HALFPEL_H(ROUNDING); | ||
| 94 : | INTERPLATE8X8_HALFPEL_H(ROUNDING); | ||
| 95 : | INTERPLATE8X8_HALFPEL_H(ROUNDING); | ||
| 96 : | INTERPLATE8X8_HALFPEL_H(ROUNDING); | ||
| 97 : | |||
| 98 : | INTERPLATE8X8_HALFPEL_H(ROUNDING); | ||
| 99 : | INTERPLATE8X8_HALFPEL_H(ROUNDING); | ||
| 100 : | INTERPLATE8X8_HALFPEL_H(ROUNDING); | ||
| 101 : | INTERPLATE8X8_HALFPEL_H(ROUNDING); | ||
| 102 : | } | ||
| 103 : | else { | ||
| 104 : | INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); | ||
| 105 : | INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); | ||
| 106 : | INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); | ||
| 107 : | INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); | ||
| 108 : | |||
| 109 : | INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); | ||
| 110 : | INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); | ||
| 111 : | INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); | ||
| 112 : | INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); | ||
| 113 : | } | ||
| 114 : | } | ||
| 115 : | |||
| 116 : | #define INTERPLATE8X8_HALFPEL_V(round) \ | ||
| 117 : | s1 = vec_perm(vec_ld(0, src), vec_ld(16, src), vec_lvsl(0, src)); \ | ||
| 118 : | s2 = vec_perm(vec_ld(0, src + stride), vec_ld(16, src + stride), vec_lvsl(0, src + stride)); \ | ||
| 119 : | d = vec_avg(s1, s2); \ | ||
| 120 : | round; \ | ||
| 121 : | mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ | ||
| 122 : | d = vec_perm(d, d, vec_lvsl(0, dst)); \ | ||
| 123 : | d = vec_sel(d, vec_ld(0, dst), mask); \ | ||
| 124 : | vec_st(d, 0, dst); \ | ||
| 125 : | dst += stride; \ | ||
| 126 : | src += stride | ||
| 127 : | |||
| 128 : | /* | ||
| 129 : | * This function assumes | ||
| 130 : | * dst is 8 byte aligned | ||
| 131 : | * src is unaligned | ||
| 132 : | * stride is a multiple of 8 | ||
| 133 : | */ | ||
| 134 : | void | ||
| 135 : | interpolate8x8_halfpel_v_altivec_c( uint8_t *dst, | ||
| 136 : | uint8_t *src, | ||
| 137 : | const uint32_t stride, | ||
| 138 : | const uint32_t rounding) | ||
| 139 : | { | ||
| 140 : | vector unsigned char s1, s2; | ||
| 141 : | vector unsigned char d; | ||
| 142 : | vector unsigned char mask; | ||
| 143 : | vector unsigned char mask_stencil; | ||
| 144 : | |||
| 145 : | #ifdef DEBUG | ||
| 146 : | /* if this is on, print alignment errors */ | ||
| 147 : | if(((unsigned long)dst) & 0x7) | ||
| 148 : | fprintf(stderr, "interpolate8x8_halfpel_v_altivec_c:incorrect align, dst: %x\n", dst); | ||
| 149 : | if(stride & 0x7) | ||
| 150 : | fprintf(stderr, "interpolate8x8_halfpel_v_altivec_c:incorrect stride, stride: %u\n", stride); | ||
| 151 : | #endif | ||
| 152 : | |||
| 153 : | mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); | ||
| 154 : | |||
| 155 : | if(rounding) { | ||
| 156 : | INTERPLATE8X8_HALFPEL_V(ROUNDING); | ||
| 157 : | INTERPLATE8X8_HALFPEL_V(ROUNDING); | ||
| 158 : | INTERPLATE8X8_HALFPEL_V(ROUNDING); | ||
| 159 : | INTERPLATE8X8_HALFPEL_V(ROUNDING); | ||
| 160 : | |||
| 161 : | INTERPLATE8X8_HALFPEL_V(ROUNDING); | ||
| 162 : | INTERPLATE8X8_HALFPEL_V(ROUNDING); | ||
| 163 : | INTERPLATE8X8_HALFPEL_V(ROUNDING); | ||
| 164 : | INTERPLATE8X8_HALFPEL_V(ROUNDING); | ||
| 165 : | } | ||
| 166 : | else { | ||
| 167 : | INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); | ||
| 168 : | INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); | ||
| 169 : | INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); | ||
| 170 : | INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); | ||
| 171 : | |||
| 172 : | INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); | ||
| 173 : | INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); | ||
| 174 : | INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); | ||
| 175 : | INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); | ||
| 176 : | } | ||
| 177 : | } | ||
| 178 : | |||
| 179 : | |||
| 180 : | #define INTERPOLATE8X8_HALFPEL_HV(adding) \ | ||
| 181 : | t = vec_perm(vec_ld(0, src), vec_ld(16, src), vec_lvsl(0, src)); \ | ||
| 182 : | s1 = (vector unsigned short)vec_mergeh(zerovec, t); \ | ||
| 183 : | t = vec_perm(vec_ld(1, src), vec_ld(17, src), vec_lvsl(1, src)); \ | ||
| 184 : | s2 = (vector unsigned short)vec_mergeh(zerovec, t); \ | ||
| 185 : | t = vec_perm(vec_ld(0, src + stride), vec_ld(16, src + stride), vec_lvsl(0, src + stride)); \ | ||
| 186 : | s3 = (vector unsigned short)vec_mergeh(zerovec, t); \ | ||
| 187 : | t = vec_perm(vec_ld(1, src + stride), vec_ld(17, src + stride), vec_lvsl(1, src + stride)); \ | ||
| 188 : | s4 = (vector unsigned short)vec_mergeh(zerovec, t); \ | ||
| 189 : | s1 = vec_add(s1, vec_add(s2, vec_add(s3, s4))); \ | ||
| 190 : | s1 = vec_add(s1, adding); \ | ||
| 191 : | s1 = vec_sr(s1, two); \ | ||
| 192 : | t = vec_pack(s1, s1); \ | ||
| 193 : | mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ | ||
| 194 : | t = vec_sel(t, vec_ld(0, dst), mask); \ | ||
| 195 : | vec_st(t, 0, dst); \ | ||
| 196 : | dst += stride; \ | ||
| 197 : | src += stride | ||
| 198 : | |||
| 199 : | void | ||
| 200 : | interpolate8x8_halfpel_hv_altivec_c(uint8_t *dst, | ||
| 201 : | uint8_t *src, | ||
| 202 : | const uint32_t stride, | ||
| 203 : | const uint32_t rounding) | ||
| 204 : | { | ||
| 205 : | vector unsigned short s1, s2, s3, s4; | ||
| 206 : | vector unsigned char t; | ||
| 207 : | vector unsigned short one, two; | ||
| 208 : | vector unsigned char zerovec; | ||
| 209 : | vector unsigned char mask; | ||
| 210 : | vector unsigned char mask_stencil; | ||
| 211 : | |||
| 212 : | /* Initialisation stuff */ | ||
| 213 : | zerovec = vec_splat_u8(0); | ||
| 214 : | one = vec_splat_u16(1); | ||
| 215 : | two = vec_splat_u16(2); | ||
| 216 : | mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); | ||
| 217 : | |||
| 218 : | if(rounding) { | ||
| 219 : | INTERPOLATE8X8_HALFPEL_HV(one); | ||
| 220 : | INTERPOLATE8X8_HALFPEL_HV(one); | ||
| 221 : | INTERPOLATE8X8_HALFPEL_HV(one); | ||
| 222 : | INTERPOLATE8X8_HALFPEL_HV(one); | ||
| 223 : | |||
| 224 : | INTERPOLATE8X8_HALFPEL_HV(one); | ||
| 225 : | INTERPOLATE8X8_HALFPEL_HV(one); | ||
| 226 : | INTERPOLATE8X8_HALFPEL_HV(one); | ||
| 227 : | INTERPOLATE8X8_HALFPEL_HV(one); | ||
| 228 : | } | ||
| 229 : | else { | ||
| 230 : | INTERPOLATE8X8_HALFPEL_HV(two); | ||
| 231 : | INTERPOLATE8X8_HALFPEL_HV(two); | ||
| 232 : | INTERPOLATE8X8_HALFPEL_HV(two); | ||
| 233 : | INTERPOLATE8X8_HALFPEL_HV(two); | ||
| 234 : | |||
| 235 : | INTERPOLATE8X8_HALFPEL_HV(two); | ||
| 236 : | INTERPOLATE8X8_HALFPEL_HV(two); | ||
| 237 : | INTERPOLATE8X8_HALFPEL_HV(two); | ||
| 238 : | INTERPOLATE8X8_HALFPEL_HV(two); | ||
| 239 : | } | ||
| 240 : | } | ||
| 241 : | |||
| 242 : | /* | ||
| 243 : | * This function assumes: | ||
| 244 : | * dst is 8 byte aligned | ||
| 245 : | * src1 is unaligned | ||
| 246 : | * src2 is unaligned | ||
| 247 : | * stirde is a multiple of 8 | ||
| 248 : | * rounding is smaller than than max signed short + 2 | ||
| 249 : | */ | ||
| 250 : | |||
| 251 : | void | ||
| 252 : | interpolate8x8_avg2_altivec_c( uint8_t *dst, | ||
| 253 : | const uint8_t *src1, | ||
| 254 : | const uint8_t *src2, | ||
| 255 : | const uint32_t stride, | ||
| 256 : | const uint32_t rounding, | ||
| 257 : | const uint32_t height) | ||
| 258 : | { | ||
| 259 : | uint32_t i; | ||
| 260 : | vector unsigned char t; | ||
| 261 : | vector unsigned char mask; | ||
| 262 : | vector unsigned char mask_stencil; | ||
| 263 : | vector unsigned char zerovec; | ||
| 264 : | vector signed short s1, s2; | ||
| 265 : | vector signed short d; | ||
| 266 : | vector signed short round; | ||
| 267 : | |||
| 268 : | #ifdef DEBUG | ||
| 269 : | /* If this is on, print alignment errors */ | ||
| 270 : | if(((unsigned long)dst) & 0x7) | ||
| 271 : | fprintf(stderr, "interpolate8x8_avg2_altivec_c:incorrect align, dst: %x\n", dst); | ||
| 272 : | if(stride & 0x7) | ||
| 273 : | fprintf(stderr, "interpolate8x8_avg2_altivec_c:incorrect stride, stride: %u\n", stride); | ||
| 274 : | if(rounding > (32767 + 2)) | ||
| 275 : | fprintf(stderr, "interpolate8x8_avg2_altivec_c:incorrect rounding, rounding: %d\n", rounding); | ||
| 276 : | #endif | ||
| 277 : | |||
| 278 : | /* initialisation */ | ||
| 279 : | zerovec = vec_splat_u8(0); | ||
| 280 : | *((short*)&round) = 1 - rounding; | ||
| 281 : | round = vec_splat(round, 0); | ||
| 282 : | mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); | ||
| 283 : | |||
| 284 : | for(i = 0; i < height; i++) { | ||
| 285 : | |||
| 286 : | t = vec_perm(vec_ld(0, src1), vec_ld(16, src1), vec_lvsl(0, src1)); | ||
| 287 : | d = vec_add((vector signed short)zerovec, round); | ||
| 288 : | s1 = (vector signed short)vec_mergeh(zerovec, t); | ||
| 289 : | |||
| 290 : | t = vec_perm(vec_ld(0, src2), vec_ld(16, src2), vec_lvsl(0, src2)); | ||
| 291 : | d = vec_add(d, s1); | ||
| 292 : | s2 = (vector signed short)vec_mergeh(zerovec, t); | ||
| 293 : | |||
| 294 : | d = vec_add(d, s2); | ||
| 295 : | d = vec_sr(d, vec_splat_u16(1)); | ||
| 296 : | |||
| 297 : | t = vec_pack((vector unsigned short)d, (vector unsigned short)zerovec); | ||
| 298 : | mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); | ||
| 299 : | t = vec_perm(t, t, vec_lvsl(0, dst)); | ||
| 300 : | t = vec_sel(t, vec_ld(0, dst), mask); | ||
| 301 : | vec_st(t, 0, dst); | ||
| 302 : | |||
| 303 : | dst += stride; | ||
| 304 : | src1 += stride; | ||
| 305 : | src2 += stride; | ||
| 306 : | } | ||
| 307 : | } | ||
| 308 : | |||
| 309 : | |||
| 310 : | #define INTERPOLATE8X8_AVG4() \ | ||
| 311 : | d = r; \ | ||
| 312 : | \ | ||
| 313 : | t = vec_perm(vec_ld(0, src1), vec_ld(16, src1), vec_lvsl(0, src1)); \ | ||
| 314 : | s = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 315 : | d = vec_add(d, s); \ | ||
| 316 : | \ | ||
| 317 : | t = vec_perm(vec_ld(0, src2), vec_ld(16, src2), vec_lvsl(0, src2)); \ | ||
| 318 : | s = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 319 : | d = vec_add(d, s); \ | ||
| 320 : | \ | ||
| 321 : | t = vec_perm(vec_ld(0, src3), vec_ld(16, src3), vec_lvsl(0, src3)); \ | ||
| 322 : | s = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 323 : | d = vec_add(d, s); \ | ||
| 324 : | \ | ||
| 325 : | t = vec_perm(vec_ld(0, src4), vec_ld(16, src4), vec_lvsl(0, src4)); \ | ||
| 326 : | s = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 327 : | d = vec_add(d, s); \ | ||
| 328 : | \ | ||
| 329 : | d = vec_sr(d, shift); \ | ||
| 330 : | \ | ||
| 331 : | t = vec_pack((vector unsigned short)d, (vector unsigned short)zerovec); \ | ||
| 332 : | mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ | ||
| 333 : | t = vec_perm(t, t, vec_lvsl(0, dst)); \ | ||
| 334 : | t = vec_sel(t, vec_ld(0, dst), mask); \ | ||
| 335 : | vec_st(t, 0, dst); \ | ||
| 336 : | \ | ||
| 337 : | dst += stride; \ | ||
| 338 : | src1 += stride; \ | ||
| 339 : | src2 += stride; \ | ||
| 340 : | src3 += stride; \ | ||
| 341 : | src4 += stride | ||
| 342 : | |||
| 343 : | /* This function assumes: | ||
| 344 : | * dst is 8 byte aligned | ||
| 345 : | * src1, src2, src3, src4 are unaligned | ||
| 346 : | * stride is a multiple of 8 | ||
| 347 : | */ | ||
| 348 : | |||
| 349 : | void | ||
| 350 : | interpolate8x8_avg4_altivec_c(uint8_t *dst, | ||
| 351 : | const uint8_t *src1, const uint8_t *src2, | ||
| 352 : | const uint8_t *src3, const uint8_t *src4, | ||
| 353 : | const uint32_t stride, const uint32_t rounding) | ||
| 354 : | { | ||
| 355 : | vector signed short r; | ||
| 356 : | register vector signed short s, d; | ||
| 357 : | register vector unsigned short shift; | ||
| 358 : | register vector unsigned char t; | ||
| 359 : | register vector unsigned char zerovec; | ||
| 360 : | register vector unsigned char mask; | ||
| 361 : | register vector unsigned char mask_stencil; | ||
| 362 : | |||
| 363 : | #ifdef DEBUG | ||
| 364 : | /* if debug is set, print alignment errors */ | ||
| 365 : | if(((unsigned)dst) & 0x7) | ||
| 366 : | fprintf(stderr, "interpolate8x8_avg4_altivec_c:incorrect align, dst: %x\n", dst); | ||
| 367 : | if(stride & 0x7) | ||
| 368 : | fprintf(stderr, "interpolate8x8_avg4_altivec_c:incorrect stride, stride: %u\n", stride); | ||
| 369 : | #endif | ||
| 370 : | |||
| 371 : | /* Initialization */ | ||
| 372 : | zerovec = vec_splat_u8(0); | ||
| 373 : | *((short*)&r) = 2 - rounding; | ||
| 374 : | r = vec_splat(r, 0); | ||
| 375 : | shift = vec_splat_u16(2); | ||
| 376 : | mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); | ||
| 377 : | |||
| 378 : | /* interpolate */ | ||
| 379 : | INTERPOLATE8X8_AVG4(); | ||
| 380 : | INTERPOLATE8X8_AVG4(); | ||
| 381 : | INTERPOLATE8X8_AVG4(); | ||
| 382 : | INTERPOLATE8X8_AVG4(); | ||
| 383 : | |||
| 384 : | INTERPOLATE8X8_AVG4(); | ||
| 385 : | INTERPOLATE8X8_AVG4(); | ||
| 386 : | INTERPOLATE8X8_AVG4(); | ||
| 387 : | INTERPOLATE8X8_AVG4(); | ||
| 388 : | } | ||
| 389 : | |||
| 390 : | |||
| 391 : | |||
| 392 : | /************************************************************* | ||
| 393 : | * QPEL STUFF STARTS HERE * | ||
| 394 : | *************************************************************/ | ||
| 395 : | |||
| 396 : | |||
| 397 : | #define INTERPOLATE8X8_6TAP_LOWPASS_H() \ | ||
| 398 : | vec_dstt(src, prefetch_constant, 0); \ | ||
| 399 : | data = vec_perm(vec_ld(-2, src), vec_ld(14, src), vec_lvsl(-2, src)); \ | ||
| 400 : | s1 = (vector signed short)vec_mergeh(zerovec, data); \ | ||
| 401 : | t = vec_perm(data, data, vec_lvsl(5, (unsigned char*)0)); \ | ||
| 402 : | s2 = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 403 : | d = vec_add(s1, s2); \ | ||
| 404 : | \ | ||
| 405 : | t = vec_perm(data, data, vec_lvsl(2, (unsigned char*)0)); \ | ||
| 406 : | s1 = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 407 : | t = vec_perm(data, data, vec_lvsl(3, (unsigned char*)0)); \ | ||
| 408 : | s2 = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 409 : | s1 = vec_add(s1,s2); \ | ||
| 410 : | z = vec_sl(s1, vec_splat_u16(2)); \ | ||
| 411 : | t = vec_perm(data, data, vec_lvsl(1, (unsigned char*)0)); \ | ||
| 412 : | s1 = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 413 : | t = vec_perm(data, data, vec_lvsl(4, (unsigned char*)0)); \ | ||
| 414 : | s2 = (vector signed short)vec_mergeh(zerovec, t); \ | ||
| 415 : | s1 = vec_add(s1, s2); \ | ||
| 416 : | z = vec_sub(z, s1); \ | ||
| 417 : | z = vec_add(vec_sl(z, vec_splat_u16(2)), z); \ | ||
| 418 : | d = vec_add(d, z); \ | ||
| 419 : | \ | ||
| 420 : | d = vec_add(d, round_add); \ | ||
| 421 : | d = vec_sra(d, vec_splat_u16(5)); \ | ||
| 422 : | \ | ||
| 423 : | t = vec_packsu(d, (vector signed short)zerovec); \ | ||
| 424 : | mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ | ||
| 425 : | t = vec_perm(t, t, vec_lvsl(0, dst)); \ | ||
| 426 : | t = vec_sel(t, vec_ld(0, dst), mask); \ | ||
| 427 : | vec_st(t, 0, dst); \ | ||
| 428 : | \ | ||
| 429 : | dst += stride; \ | ||
| 430 : | src += stride | ||
| 431 : | |||
| 432 : | /* This function assumes: | ||
| 433 : | * dst is 8 byte aligned | ||
| 434 : | * src is unaligned | ||
| 435 : | * stride is a muliple of 8 | ||
| 436 : | */ | ||
| 437 : | |||
| 438 : | void | ||
| 439 : | interpolate8x8_6tap_lowpass_h_altivec_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding) | ||
| 440 : | { | ||
| 441 : | vector signed short s1, s2; | ||
| 442 : | vector signed short z; | ||
| 443 : | vector signed short d; | ||
| 444 : | vector signed short round_add; | ||
| 445 : | vector unsigned char t; | ||
| 446 : | vector unsigned char data; | ||
| 447 : | vector unsigned char mask; | ||
| 448 : | vector unsigned char mask_stencil; | ||
| 449 : | vector unsigned char zerovec; | ||
| 450 : | |||
| 451 : | unsigned prefetch_constant; | ||
| 452 : | |||
| 453 : | zerovec = vec_splat_u8(0); | ||
| 454 : | *((short*)&round_add) = (short)(16 - rounding); | ||
| 455 : | round_add = vec_splat(round_add, 0); | ||
| 456 : | mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); | ||
| 457 : | |||
| 458 : | prefetch_constant = build_prefetch(1, 4, (short)stride); | ||
| 459 : | |||
| 460 : | INTERPOLATE8X8_6TAP_LOWPASS_H(); | ||
| 461 : | INTERPOLATE8X8_6TAP_LOWPASS_H(); | ||
| 462 : | INTERPOLATE8X8_6TAP_LOWPASS_H(); | ||
| 463 : | INTERPOLATE8X8_6TAP_LOWPASS_H(); | ||
| 464 : | |||
| 465 : | INTERPOLATE8X8_6TAP_LOWPASS_H(); | ||
| 466 : | INTERPOLATE8X8_6TAP_LOWPASS_H(); | ||
| 467 : | INTERPOLATE8X8_6TAP_LOWPASS_H(); | ||
| 468 : | INTERPOLATE8X8_6TAP_LOWPASS_H(); | ||
| 469 : | |||
| 470 : | vec_dss(0); | ||
| 471 : | } |
| No admin address has been configured | ViewVC Help |
| Powered by ViewVC 1.0.4 |