Libav
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00001 /* 00002 * Copyright (C) 2003 James Klicman <james@klicman.org> 00003 * 00004 * This file is part of FFmpeg. 00005 * 00006 * FFmpeg is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * FFmpeg is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with FFmpeg; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #include "config.h" 00022 #if HAVE_ALTIVEC_H 00023 #include <altivec.h> 00024 #endif 00025 #include "libavutil/common.h" 00026 #include "libavcodec/dsputil.h" 00027 #include "dsputil_ppc.h" 00028 #include "dsputil_altivec.h" 00029 00030 #define vs16(v) ((vector signed short)(v)) 00031 #define vs32(v) ((vector signed int)(v)) 00032 #define vu8(v) ((vector unsigned char)(v)) 00033 #define vu16(v) ((vector unsigned short)(v)) 00034 #define vu32(v) ((vector unsigned int)(v)) 00035 00036 00037 #define C1 0.98078525066375732421875000 /* cos(1*PI/16) */ 00038 #define C2 0.92387950420379638671875000 /* cos(2*PI/16) */ 00039 #define C3 0.83146959543228149414062500 /* cos(3*PI/16) */ 00040 #define C4 0.70710676908493041992187500 /* cos(4*PI/16) */ 00041 #define C5 0.55557024478912353515625000 /* cos(5*PI/16) */ 00042 #define C6 0.38268342614173889160156250 /* cos(6*PI/16) */ 00043 #define C7 0.19509032368659973144531250 /* cos(7*PI/16) */ 00044 #define SQRT_2 1.41421353816986083984375000 /* sqrt(2) */ 00045 00046 00047 #define W0 -(2 * C2) 00048 #define W1 (2 * C6) 00049 #define W2 (SQRT_2 * C6) 00050 #define W3 (SQRT_2 * C3) 00051 #define W4 (SQRT_2 * (-C1 + C3 + C5 - C7)) 00052 #define W5 (SQRT_2 * ( C1 + C3 - C5 + C7)) 00053 #define W6 (SQRT_2 * ( C1 + C3 + C5 - C7)) 00054 #define W7 (SQRT_2 * ( C1 + C3 - C5 - C7)) 00055 #define W8 (SQRT_2 * ( C7 - C3)) 00056 #define W9 (SQRT_2 * (-C1 - C3)) 00057 #define WA (SQRT_2 * (-C3 - C5)) 00058 #define WB (SQRT_2 * ( C5 - C3)) 00059 00060 00061 static vector float fdctconsts[3] = { 00062 { W0, W1, W2, W3 }, 00063 { W4, W5, W6, W7 }, 00064 { W8, W9, WA, WB } 00065 }; 00066 00067 #define LD_W0 vec_splat(cnsts0, 0) 00068 #define LD_W1 vec_splat(cnsts0, 1) 00069 #define LD_W2 vec_splat(cnsts0, 2) 00070 #define LD_W3 vec_splat(cnsts0, 3) 00071 #define LD_W4 vec_splat(cnsts1, 0) 00072 #define LD_W5 vec_splat(cnsts1, 1) 00073 #define LD_W6 vec_splat(cnsts1, 2) 00074 #define LD_W7 vec_splat(cnsts1, 3) 00075 #define LD_W8 vec_splat(cnsts2, 0) 00076 #define LD_W9 vec_splat(cnsts2, 1) 00077 #define LD_WA vec_splat(cnsts2, 2) 00078 #define LD_WB vec_splat(cnsts2, 3) 00079 00080 00081 #define FDCTROW(b0,b1,b2,b3,b4,b5,b6,b7) /* {{{ */ \ 00082 x0 = vec_add(b0, b7); /* x0 = b0 + b7; */ \ 00083 x7 = vec_sub(b0, b7); /* x7 = b0 - b7; */ \ 00084 x1 = vec_add(b1, b6); /* x1 = b1 + b6; */ \ 00085 x6 = vec_sub(b1, b6); /* x6 = b1 - b6; */ \ 00086 x2 = vec_add(b2, b5); /* x2 = b2 + b5; */ \ 00087 x5 = vec_sub(b2, b5); /* x5 = b2 - b5; */ \ 00088 x3 = vec_add(b3, b4); /* x3 = b3 + b4; */ \ 00089 x4 = vec_sub(b3, b4); /* x4 = b3 - b4; */ \ 00090 \ 00091 b7 = vec_add(x0, x3); /* b7 = x0 + x3; */ \ 00092 b1 = vec_add(x1, x2); /* b1 = x1 + x2; */ \ 00093 b0 = vec_add(b7, b1); /* b0 = b7 + b1; */ \ 00094 b4 = vec_sub(b7, b1); /* b4 = b7 - b1; */ \ 00095 \ 00096 b2 = vec_sub(x0, x3); /* b2 = x0 - x3; */ \ 00097 b6 = vec_sub(x1, x2); /* b6 = x1 - x2; */ \ 00098 b5 = vec_add(b6, b2); /* b5 = b6 + b2; */ \ 00099 cnst = LD_W2; \ 00100 b5 = vec_madd(cnst, b5, mzero); /* b5 = b5 * W2; */ \ 00101 cnst = LD_W1; \ 00102 b2 = vec_madd(cnst, b2, b5); /* b2 = b5 + b2 * W1; */ \ 00103 cnst = LD_W0; \ 00104 b6 = vec_madd(cnst, b6, b5); /* b6 = b5 + b6 * W0; */ \ 00105 \ 00106 x0 = vec_add(x4, x7); /* x0 = x4 + x7; */ \ 00107 x1 = vec_add(x5, x6); /* x1 = x5 + x6; */ \ 00108 x2 = vec_add(x4, x6); /* x2 = x4 + x6; */ \ 00109 x3 = vec_add(x5, x7); /* x3 = x5 + x7; */ \ 00110 x8 = vec_add(x2, x3); /* x8 = x2 + x3; */ \ 00111 cnst = LD_W3; \ 00112 x8 = vec_madd(cnst, x8, mzero); /* x8 = x8 * W3; */ \ 00113 \ 00114 cnst = LD_W8; \ 00115 x0 = vec_madd(cnst, x0, mzero); /* x0 *= W8; */ \ 00116 cnst = LD_W9; \ 00117 x1 = vec_madd(cnst, x1, mzero); /* x1 *= W9; */ \ 00118 cnst = LD_WA; \ 00119 x2 = vec_madd(cnst, x2, x8); /* x2 = x2 * WA + x8; */ \ 00120 cnst = LD_WB; \ 00121 x3 = vec_madd(cnst, x3, x8); /* x3 = x3 * WB + x8; */ \ 00122 \ 00123 cnst = LD_W4; \ 00124 b7 = vec_madd(cnst, x4, x0); /* b7 = x4 * W4 + x0; */ \ 00125 cnst = LD_W5; \ 00126 b5 = vec_madd(cnst, x5, x1); /* b5 = x5 * W5 + x1; */ \ 00127 cnst = LD_W6; \ 00128 b3 = vec_madd(cnst, x6, x1); /* b3 = x6 * W6 + x1; */ \ 00129 cnst = LD_W7; \ 00130 b1 = vec_madd(cnst, x7, x0); /* b1 = x7 * W7 + x0; */ \ 00131 \ 00132 b7 = vec_add(b7, x2); /* b7 = b7 + x2; */ \ 00133 b5 = vec_add(b5, x3); /* b5 = b5 + x3; */ \ 00134 b3 = vec_add(b3, x2); /* b3 = b3 + x2; */ \ 00135 b1 = vec_add(b1, x3); /* b1 = b1 + x3; */ \ 00136 /* }}} */ 00137 00138 #define FDCTCOL(b0,b1,b2,b3,b4,b5,b6,b7) /* {{{ */ \ 00139 x0 = vec_add(b0, b7); /* x0 = b0 + b7; */ \ 00140 x7 = vec_sub(b0, b7); /* x7 = b0 - b7; */ \ 00141 x1 = vec_add(b1, b6); /* x1 = b1 + b6; */ \ 00142 x6 = vec_sub(b1, b6); /* x6 = b1 - b6; */ \ 00143 x2 = vec_add(b2, b5); /* x2 = b2 + b5; */ \ 00144 x5 = vec_sub(b2, b5); /* x5 = b2 - b5; */ \ 00145 x3 = vec_add(b3, b4); /* x3 = b3 + b4; */ \ 00146 x4 = vec_sub(b3, b4); /* x4 = b3 - b4; */ \ 00147 \ 00148 b7 = vec_add(x0, x3); /* b7 = x0 + x3; */ \ 00149 b1 = vec_add(x1, x2); /* b1 = x1 + x2; */ \ 00150 b0 = vec_add(b7, b1); /* b0 = b7 + b1; */ \ 00151 b4 = vec_sub(b7, b1); /* b4 = b7 - b1; */ \ 00152 \ 00153 b2 = vec_sub(x0, x3); /* b2 = x0 - x3; */ \ 00154 b6 = vec_sub(x1, x2); /* b6 = x1 - x2; */ \ 00155 b5 = vec_add(b6, b2); /* b5 = b6 + b2; */ \ 00156 cnst = LD_W2; \ 00157 b5 = vec_madd(cnst, b5, mzero); /* b5 = b5 * W2; */ \ 00158 cnst = LD_W1; \ 00159 b2 = vec_madd(cnst, b2, b5); /* b2 = b5 + b2 * W1; */ \ 00160 cnst = LD_W0; \ 00161 b6 = vec_madd(cnst, b6, b5); /* b6 = b5 + b6 * W0; */ \ 00162 \ 00163 x0 = vec_add(x4, x7); /* x0 = x4 + x7; */ \ 00164 x1 = vec_add(x5, x6); /* x1 = x5 + x6; */ \ 00165 x2 = vec_add(x4, x6); /* x2 = x4 + x6; */ \ 00166 x3 = vec_add(x5, x7); /* x3 = x5 + x7; */ \ 00167 x8 = vec_add(x2, x3); /* x8 = x2 + x3; */ \ 00168 cnst = LD_W3; \ 00169 x8 = vec_madd(cnst, x8, mzero); /* x8 = x8 * W3; */ \ 00170 \ 00171 cnst = LD_W8; \ 00172 x0 = vec_madd(cnst, x0, mzero); /* x0 *= W8; */ \ 00173 cnst = LD_W9; \ 00174 x1 = vec_madd(cnst, x1, mzero); /* x1 *= W9; */ \ 00175 cnst = LD_WA; \ 00176 x2 = vec_madd(cnst, x2, x8); /* x2 = x2 * WA + x8; */ \ 00177 cnst = LD_WB; \ 00178 x3 = vec_madd(cnst, x3, x8); /* x3 = x3 * WB + x8; */ \ 00179 \ 00180 cnst = LD_W4; \ 00181 b7 = vec_madd(cnst, x4, x0); /* b7 = x4 * W4 + x0; */ \ 00182 cnst = LD_W5; \ 00183 b5 = vec_madd(cnst, x5, x1); /* b5 = x5 * W5 + x1; */ \ 00184 cnst = LD_W6; \ 00185 b3 = vec_madd(cnst, x6, x1); /* b3 = x6 * W6 + x1; */ \ 00186 cnst = LD_W7; \ 00187 b1 = vec_madd(cnst, x7, x0); /* b1 = x7 * W7 + x0; */ \ 00188 \ 00189 b7 = vec_add(b7, x2); /* b7 += x2; */ \ 00190 b5 = vec_add(b5, x3); /* b5 += x3; */ \ 00191 b3 = vec_add(b3, x2); /* b3 += x2; */ \ 00192 b1 = vec_add(b1, x3); /* b1 += x3; */ \ 00193 /* }}} */ 00194 00195 00196 00197 /* two dimensional discrete cosine transform */ 00198 00199 void fdct_altivec(int16_t *block) 00200 { 00201 POWERPC_PERF_DECLARE(altivec_fdct, 1); 00202 vector signed short *bp; 00203 vector float *cp; 00204 vector float b00, b10, b20, b30, b40, b50, b60, b70; 00205 vector float b01, b11, b21, b31, b41, b51, b61, b71; 00206 vector float mzero, cnst, cnsts0, cnsts1, cnsts2; 00207 vector float x0, x1, x2, x3, x4, x5, x6, x7, x8; 00208 00209 POWERPC_PERF_START_COUNT(altivec_fdct, 1); 00210 00211 00212 /* setup constants {{{ */ 00213 /* mzero = -0.0 */ 00214 mzero = ((vector float)vec_splat_u32(-1)); 00215 mzero = ((vector float)vec_sl(vu32(mzero), vu32(mzero))); 00216 cp = fdctconsts; 00217 cnsts0 = vec_ld(0, cp); cp++; 00218 cnsts1 = vec_ld(0, cp); cp++; 00219 cnsts2 = vec_ld(0, cp); 00220 /* }}} */ 00221 00222 00223 /* 8x8 matrix transpose (vector short[8]) {{{ */ 00224 #define MERGE_S16(hl,a,b) vec_merge##hl(vs16(a), vs16(b)) 00225 00226 bp = (vector signed short*)block; 00227 b00 = ((vector float)vec_ld(0, bp)); 00228 b40 = ((vector float)vec_ld(16*4, bp)); 00229 b01 = ((vector float)MERGE_S16(h, b00, b40)); 00230 b11 = ((vector float)MERGE_S16(l, b00, b40)); 00231 bp++; 00232 b10 = ((vector float)vec_ld(0, bp)); 00233 b50 = ((vector float)vec_ld(16*4, bp)); 00234 b21 = ((vector float)MERGE_S16(h, b10, b50)); 00235 b31 = ((vector float)MERGE_S16(l, b10, b50)); 00236 bp++; 00237 b20 = ((vector float)vec_ld(0, bp)); 00238 b60 = ((vector float)vec_ld(16*4, bp)); 00239 b41 = ((vector float)MERGE_S16(h, b20, b60)); 00240 b51 = ((vector float)MERGE_S16(l, b20, b60)); 00241 bp++; 00242 b30 = ((vector float)vec_ld(0, bp)); 00243 b70 = ((vector float)vec_ld(16*4, bp)); 00244 b61 = ((vector float)MERGE_S16(h, b30, b70)); 00245 b71 = ((vector float)MERGE_S16(l, b30, b70)); 00246 00247 x0 = ((vector float)MERGE_S16(h, b01, b41)); 00248 x1 = ((vector float)MERGE_S16(l, b01, b41)); 00249 x2 = ((vector float)MERGE_S16(h, b11, b51)); 00250 x3 = ((vector float)MERGE_S16(l, b11, b51)); 00251 x4 = ((vector float)MERGE_S16(h, b21, b61)); 00252 x5 = ((vector float)MERGE_S16(l, b21, b61)); 00253 x6 = ((vector float)MERGE_S16(h, b31, b71)); 00254 x7 = ((vector float)MERGE_S16(l, b31, b71)); 00255 00256 b00 = ((vector float)MERGE_S16(h, x0, x4)); 00257 b10 = ((vector float)MERGE_S16(l, x0, x4)); 00258 b20 = ((vector float)MERGE_S16(h, x1, x5)); 00259 b30 = ((vector float)MERGE_S16(l, x1, x5)); 00260 b40 = ((vector float)MERGE_S16(h, x2, x6)); 00261 b50 = ((vector float)MERGE_S16(l, x2, x6)); 00262 b60 = ((vector float)MERGE_S16(h, x3, x7)); 00263 b70 = ((vector float)MERGE_S16(l, x3, x7)); 00264 00265 #undef MERGE_S16 00266 /* }}} */ 00267 00268 00269 /* Some of the initial calculations can be done as vector short before 00270 * conversion to vector float. The following code section takes advantage 00271 * of this. 00272 */ 00273 #if 1 00274 /* fdct rows {{{ */ 00275 x0 = ((vector float)vec_add(vs16(b00), vs16(b70))); 00276 x7 = ((vector float)vec_sub(vs16(b00), vs16(b70))); 00277 x1 = ((vector float)vec_add(vs16(b10), vs16(b60))); 00278 x6 = ((vector float)vec_sub(vs16(b10), vs16(b60))); 00279 x2 = ((vector float)vec_add(vs16(b20), vs16(b50))); 00280 x5 = ((vector float)vec_sub(vs16(b20), vs16(b50))); 00281 x3 = ((vector float)vec_add(vs16(b30), vs16(b40))); 00282 x4 = ((vector float)vec_sub(vs16(b30), vs16(b40))); 00283 00284 b70 = ((vector float)vec_add(vs16(x0), vs16(x3))); 00285 b10 = ((vector float)vec_add(vs16(x1), vs16(x2))); 00286 00287 b00 = ((vector float)vec_add(vs16(b70), vs16(b10))); 00288 b40 = ((vector float)vec_sub(vs16(b70), vs16(b10))); 00289 00290 #define CTF0(n) \ 00291 b##n##1 = ((vector float)vec_unpackl(vs16(b##n##0))); \ 00292 b##n##0 = ((vector float)vec_unpackh(vs16(b##n##0))); \ 00293 b##n##1 = vec_ctf(vs32(b##n##1), 0); \ 00294 b##n##0 = vec_ctf(vs32(b##n##0), 0); 00295 00296 CTF0(0); 00297 CTF0(4); 00298 00299 b20 = ((vector float)vec_sub(vs16(x0), vs16(x3))); 00300 b60 = ((vector float)vec_sub(vs16(x1), vs16(x2))); 00301 00302 CTF0(2); 00303 CTF0(6); 00304 00305 #undef CTF0 00306 00307 x0 = vec_add(b60, b20); 00308 x1 = vec_add(b61, b21); 00309 00310 cnst = LD_W2; 00311 x0 = vec_madd(cnst, x0, mzero); 00312 x1 = vec_madd(cnst, x1, mzero); 00313 cnst = LD_W1; 00314 b20 = vec_madd(cnst, b20, x0); 00315 b21 = vec_madd(cnst, b21, x1); 00316 cnst = LD_W0; 00317 b60 = vec_madd(cnst, b60, x0); 00318 b61 = vec_madd(cnst, b61, x1); 00319 00320 #define CTFX(x,b) \ 00321 b##0 = ((vector float)vec_unpackh(vs16(x))); \ 00322 b##1 = ((vector float)vec_unpackl(vs16(x))); \ 00323 b##0 = vec_ctf(vs32(b##0), 0); \ 00324 b##1 = vec_ctf(vs32(b##1), 0); \ 00325 00326 CTFX(x4, b7); 00327 CTFX(x5, b5); 00328 CTFX(x6, b3); 00329 CTFX(x7, b1); 00330 00331 #undef CTFX 00332 00333 00334 x0 = vec_add(b70, b10); 00335 x1 = vec_add(b50, b30); 00336 x2 = vec_add(b70, b30); 00337 x3 = vec_add(b50, b10); 00338 x8 = vec_add(x2, x3); 00339 cnst = LD_W3; 00340 x8 = vec_madd(cnst, x8, mzero); 00341 00342 cnst = LD_W8; 00343 x0 = vec_madd(cnst, x0, mzero); 00344 cnst = LD_W9; 00345 x1 = vec_madd(cnst, x1, mzero); 00346 cnst = LD_WA; 00347 x2 = vec_madd(cnst, x2, x8); 00348 cnst = LD_WB; 00349 x3 = vec_madd(cnst, x3, x8); 00350 00351 cnst = LD_W4; 00352 b70 = vec_madd(cnst, b70, x0); 00353 cnst = LD_W5; 00354 b50 = vec_madd(cnst, b50, x1); 00355 cnst = LD_W6; 00356 b30 = vec_madd(cnst, b30, x1); 00357 cnst = LD_W7; 00358 b10 = vec_madd(cnst, b10, x0); 00359 00360 b70 = vec_add(b70, x2); 00361 b50 = vec_add(b50, x3); 00362 b30 = vec_add(b30, x2); 00363 b10 = vec_add(b10, x3); 00364 00365 00366 x0 = vec_add(b71, b11); 00367 x1 = vec_add(b51, b31); 00368 x2 = vec_add(b71, b31); 00369 x3 = vec_add(b51, b11); 00370 x8 = vec_add(x2, x3); 00371 cnst = LD_W3; 00372 x8 = vec_madd(cnst, x8, mzero); 00373 00374 cnst = LD_W8; 00375 x0 = vec_madd(cnst, x0, mzero); 00376 cnst = LD_W9; 00377 x1 = vec_madd(cnst, x1, mzero); 00378 cnst = LD_WA; 00379 x2 = vec_madd(cnst, x2, x8); 00380 cnst = LD_WB; 00381 x3 = vec_madd(cnst, x3, x8); 00382 00383 cnst = LD_W4; 00384 b71 = vec_madd(cnst, b71, x0); 00385 cnst = LD_W5; 00386 b51 = vec_madd(cnst, b51, x1); 00387 cnst = LD_W6; 00388 b31 = vec_madd(cnst, b31, x1); 00389 cnst = LD_W7; 00390 b11 = vec_madd(cnst, b11, x0); 00391 00392 b71 = vec_add(b71, x2); 00393 b51 = vec_add(b51, x3); 00394 b31 = vec_add(b31, x2); 00395 b11 = vec_add(b11, x3); 00396 /* }}} */ 00397 #else 00398 /* convert to float {{{ */ 00399 #define CTF(n) \ 00400 vs32(b##n##1) = vec_unpackl(vs16(b##n##0)); \ 00401 vs32(b##n##0) = vec_unpackh(vs16(b##n##0)); \ 00402 b##n##1 = vec_ctf(vs32(b##n##1), 0); \ 00403 b##n##0 = vec_ctf(vs32(b##n##0), 0); \ 00404 00405 CTF(0); 00406 CTF(1); 00407 CTF(2); 00408 CTF(3); 00409 CTF(4); 00410 CTF(5); 00411 CTF(6); 00412 CTF(7); 00413 00414 #undef CTF 00415 /* }}} */ 00416 00417 FDCTROW(b00, b10, b20, b30, b40, b50, b60, b70); 00418 FDCTROW(b01, b11, b21, b31, b41, b51, b61, b71); 00419 #endif 00420 00421 00422 /* 8x8 matrix transpose (vector float[8][2]) {{{ */ 00423 x0 = vec_mergel(b00, b20); 00424 x1 = vec_mergeh(b00, b20); 00425 x2 = vec_mergel(b10, b30); 00426 x3 = vec_mergeh(b10, b30); 00427 00428 b00 = vec_mergeh(x1, x3); 00429 b10 = vec_mergel(x1, x3); 00430 b20 = vec_mergeh(x0, x2); 00431 b30 = vec_mergel(x0, x2); 00432 00433 x4 = vec_mergel(b41, b61); 00434 x5 = vec_mergeh(b41, b61); 00435 x6 = vec_mergel(b51, b71); 00436 x7 = vec_mergeh(b51, b71); 00437 00438 b41 = vec_mergeh(x5, x7); 00439 b51 = vec_mergel(x5, x7); 00440 b61 = vec_mergeh(x4, x6); 00441 b71 = vec_mergel(x4, x6); 00442 00443 x0 = vec_mergel(b01, b21); 00444 x1 = vec_mergeh(b01, b21); 00445 x2 = vec_mergel(b11, b31); 00446 x3 = vec_mergeh(b11, b31); 00447 00448 x4 = vec_mergel(b40, b60); 00449 x5 = vec_mergeh(b40, b60); 00450 x6 = vec_mergel(b50, b70); 00451 x7 = vec_mergeh(b50, b70); 00452 00453 b40 = vec_mergeh(x1, x3); 00454 b50 = vec_mergel(x1, x3); 00455 b60 = vec_mergeh(x0, x2); 00456 b70 = vec_mergel(x0, x2); 00457 00458 b01 = vec_mergeh(x5, x7); 00459 b11 = vec_mergel(x5, x7); 00460 b21 = vec_mergeh(x4, x6); 00461 b31 = vec_mergel(x4, x6); 00462 /* }}} */ 00463 00464 00465 FDCTCOL(b00, b10, b20, b30, b40, b50, b60, b70); 00466 FDCTCOL(b01, b11, b21, b31, b41, b51, b61, b71); 00467 00468 00469 /* round, convert back to short {{{ */ 00470 #define CTS(n) \ 00471 b##n##0 = vec_round(b##n##0); \ 00472 b##n##1 = vec_round(b##n##1); \ 00473 b##n##0 = ((vector float)vec_cts(b##n##0, 0)); \ 00474 b##n##1 = ((vector float)vec_cts(b##n##1, 0)); \ 00475 b##n##0 = ((vector float)vec_pack(vs32(b##n##0), vs32(b##n##1))); \ 00476 vec_st(vs16(b##n##0), 0, bp); 00477 00478 bp = (vector signed short*)block; 00479 CTS(0); bp++; 00480 CTS(1); bp++; 00481 CTS(2); bp++; 00482 CTS(3); bp++; 00483 CTS(4); bp++; 00484 CTS(5); bp++; 00485 CTS(6); bp++; 00486 CTS(7); 00487 00488 #undef CTS 00489 /* }}} */ 00490 00491 POWERPC_PERF_STOP_COUNT(altivec_fdct, 1); 00492 } 00493 00494 /* vim:set foldmethod=marker foldlevel=0: */