1/* 2 * VC-1 and WMV3 decoder - DSP functions AltiVec-optimized 3 * Copyright (c) 2006 Konstantin Shishkov 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "config.h" 23#include "libavutil/attributes.h" 24#include "libavutil/cpu.h" 25#include "libavutil/ppc/cpu.h" 26#include "libavutil/ppc/types_altivec.h" 27#include "libavutil/ppc/util_altivec.h" 28#include "libavcodec/vc1dsp.h" 29 30#if HAVE_ALTIVEC 31 32// main steps of 8x8 transform 33#define STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_rnd) \ 34do { \ 35 t0 = vec_sl(vec_add(s0, s4), vec_2); \ 36 t0 = vec_add(vec_sl(t0, vec_1), t0); \ 37 t0 = vec_add(t0, vec_rnd); \ 38 t1 = vec_sl(vec_sub(s0, s4), vec_2); \ 39 t1 = vec_add(vec_sl(t1, vec_1), t1); \ 40 t1 = vec_add(t1, vec_rnd); \ 41 t2 = vec_add(vec_sl(s6, vec_2), vec_sl(s6, vec_1)); \ 42 t2 = vec_add(t2, vec_sl(s2, vec_4)); \ 43 t3 = vec_add(vec_sl(s2, vec_2), vec_sl(s2, vec_1)); \ 44 t3 = vec_sub(t3, vec_sl(s6, vec_4)); \ 45 t4 = vec_add(t0, t2); \ 46 t5 = vec_add(t1, t3); \ 47 t6 = vec_sub(t1, t3); \ 48 t7 = vec_sub(t0, t2); \ 49\ 50 t0 = vec_sl(vec_add(s1, s3), vec_4); \ 51 t0 = vec_add(t0, vec_sl(s5, vec_3)); \ 52 t0 = vec_add(t0, vec_sl(s7, vec_2)); \ 53 t0 = vec_add(t0, vec_sub(s5, s3)); \ 54\ 55 t1 = vec_sl(vec_sub(s1, s5), vec_4); \ 56 t1 = vec_sub(t1, vec_sl(s7, vec_3)); \ 57 t1 = vec_sub(t1, vec_sl(s3, vec_2)); \ 58 t1 = vec_sub(t1, vec_add(s1, s7)); \ 59\ 60 t2 = vec_sl(vec_sub(s7, s3), vec_4); \ 61 t2 = vec_add(t2, vec_sl(s1, vec_3)); \ 62 t2 = vec_add(t2, vec_sl(s5, vec_2)); \ 63 t2 = vec_add(t2, vec_sub(s1, s7)); \ 64\ 65 t3 = vec_sl(vec_sub(s5, s7), vec_4); \ 66 t3 = vec_sub(t3, vec_sl(s3, vec_3)); \ 67 t3 = vec_add(t3, vec_sl(s1, vec_2)); \ 68 t3 = vec_sub(t3, vec_add(s3, s5)); \ 69\ 70 s0 = vec_add(t4, t0); \ 71 s1 = vec_add(t5, t1); \ 72 s2 = vec_add(t6, t2); \ 73 s3 = vec_add(t7, t3); \ 74 s4 = vec_sub(t7, t3); \ 75 s5 = vec_sub(t6, t2); \ 76 s6 = vec_sub(t5, t1); \ 77 s7 = vec_sub(t4, t0); \ 78}while(0) 79 80#define SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7) \ 81do { \ 82 s0 = vec_sra(s0, vec_3); \ 83 s1 = vec_sra(s1, vec_3); \ 84 s2 = vec_sra(s2, vec_3); \ 85 s3 = vec_sra(s3, vec_3); \ 86 s4 = vec_sra(s4, vec_3); \ 87 s5 = vec_sra(s5, vec_3); \ 88 s6 = vec_sra(s6, vec_3); \ 89 s7 = vec_sra(s7, vec_3); \ 90}while(0) 91 92#define SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7) \ 93do { \ 94 s0 = vec_sra(s0, vec_7); \ 95 s1 = vec_sra(s1, vec_7); \ 96 s2 = vec_sra(s2, vec_7); \ 97 s3 = vec_sra(s3, vec_7); \ 98 s4 = vec_sra(vec_add(s4, vec_1s), vec_7); \ 99 s5 = vec_sra(vec_add(s5, vec_1s), vec_7); \ 100 s6 = vec_sra(vec_add(s6, vec_1s), vec_7); \ 101 s7 = vec_sra(vec_add(s7, vec_1s), vec_7); \ 102}while(0) 103 104/* main steps of 4x4 transform */ 105#define STEP4(s0, s1, s2, s3, vec_rnd) \ 106do { \ 107 t1 = vec_add(vec_sl(s0, vec_4), s0); \ 108 t1 = vec_add(t1, vec_rnd); \ 109 t2 = vec_add(vec_sl(s2, vec_4), s2); \ 110 t0 = vec_add(t1, t2); \ 111 t1 = vec_sub(t1, t2); \ 112 t3 = vec_sl(vec_sub(s3, s1), vec_1); \ 113 t3 = vec_add(t3, vec_sl(t3, vec_2)); \ 114 t2 = vec_add(t3, vec_sl(s1, vec_5)); \ 115 t3 = vec_add(t3, vec_sl(s3, vec_3)); \ 116 t3 = vec_add(t3, vec_sl(s3, vec_2)); \ 117 s0 = vec_add(t0, t2); \ 118 s1 = vec_sub(t1, t3); \ 119 s2 = vec_add(t1, t3); \ 120 s3 = vec_sub(t0, t2); \ 121}while (0) 122 123#define SHIFT_HOR4(s0, s1, s2, s3) \ 124 s0 = vec_sra(s0, vec_3); \ 125 s1 = vec_sra(s1, vec_3); \ 126 s2 = vec_sra(s2, vec_3); \ 127 s3 = vec_sra(s3, vec_3); 128 129#define SHIFT_VERT4(s0, s1, s2, s3) \ 130 s0 = vec_sra(s0, vec_7); \ 131 s1 = vec_sra(s1, vec_7); \ 132 s2 = vec_sra(s2, vec_7); \ 133 s3 = vec_sra(s3, vec_7); 134 135/** Do inverse transform on 8x8 block 136*/ 137static void vc1_inv_trans_8x8_altivec(int16_t block[64]) 138{ 139 vector signed short src0, src1, src2, src3, src4, src5, src6, src7; 140 vector signed int s0, s1, s2, s3, s4, s5, s6, s7; 141 vector signed int s8, s9, sA, sB, sC, sD, sE, sF; 142 vector signed int t0, t1, t2, t3, t4, t5, t6, t7; 143 const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4)); 144 const vector unsigned int vec_7 = vec_splat_u32(7); 145 const vector unsigned int vec_4 = vec_splat_u32(4); 146 const vector signed int vec_4s = vec_splat_s32(4); 147 const vector unsigned int vec_3 = vec_splat_u32(3); 148 const vector unsigned int vec_2 = vec_splat_u32(2); 149 const vector signed int vec_1s = vec_splat_s32(1); 150 const vector unsigned int vec_1 = vec_splat_u32(1); 151 152 src0 = vec_ld( 0, block); 153 src1 = vec_ld( 16, block); 154 src2 = vec_ld( 32, block); 155 src3 = vec_ld( 48, block); 156 src4 = vec_ld( 64, block); 157 src5 = vec_ld( 80, block); 158 src6 = vec_ld( 96, block); 159 src7 = vec_ld(112, block); 160 161 s0 = vec_unpackl(src0); 162 s1 = vec_unpackl(src1); 163 s2 = vec_unpackl(src2); 164 s3 = vec_unpackl(src3); 165 s4 = vec_unpackl(src4); 166 s5 = vec_unpackl(src5); 167 s6 = vec_unpackl(src6); 168 s7 = vec_unpackl(src7); 169 s8 = vec_unpackh(src0); 170 s9 = vec_unpackh(src1); 171 sA = vec_unpackh(src2); 172 sB = vec_unpackh(src3); 173 sC = vec_unpackh(src4); 174 sD = vec_unpackh(src5); 175 sE = vec_unpackh(src6); 176 sF = vec_unpackh(src7); 177 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s); 178 SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7); 179 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s); 180 SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF); 181 src0 = vec_pack(s8, s0); 182 src1 = vec_pack(s9, s1); 183 src2 = vec_pack(sA, s2); 184 src3 = vec_pack(sB, s3); 185 src4 = vec_pack(sC, s4); 186 src5 = vec_pack(sD, s5); 187 src6 = vec_pack(sE, s6); 188 src7 = vec_pack(sF, s7); 189 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7); 190 191 s0 = vec_unpackl(src0); 192 s1 = vec_unpackl(src1); 193 s2 = vec_unpackl(src2); 194 s3 = vec_unpackl(src3); 195 s4 = vec_unpackl(src4); 196 s5 = vec_unpackl(src5); 197 s6 = vec_unpackl(src6); 198 s7 = vec_unpackl(src7); 199 s8 = vec_unpackh(src0); 200 s9 = vec_unpackh(src1); 201 sA = vec_unpackh(src2); 202 sB = vec_unpackh(src3); 203 sC = vec_unpackh(src4); 204 sD = vec_unpackh(src5); 205 sE = vec_unpackh(src6); 206 sF = vec_unpackh(src7); 207 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_64); 208 SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7); 209 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_64); 210 SHIFT_VERT8(s8, s9, sA, sB, sC, sD, sE, sF); 211 src0 = vec_pack(s8, s0); 212 src1 = vec_pack(s9, s1); 213 src2 = vec_pack(sA, s2); 214 src3 = vec_pack(sB, s3); 215 src4 = vec_pack(sC, s4); 216 src5 = vec_pack(sD, s5); 217 src6 = vec_pack(sE, s6); 218 src7 = vec_pack(sF, s7); 219 220 vec_st(src0, 0, block); 221 vec_st(src1, 16, block); 222 vec_st(src2, 32, block); 223 vec_st(src3, 48, block); 224 vec_st(src4, 64, block); 225 vec_st(src5, 80, block); 226 vec_st(src6, 96, block); 227 vec_st(src7,112, block); 228} 229 230/** Do inverse transform on 8x4 part of block 231*/ 232static void vc1_inv_trans_8x4_altivec(uint8_t *dest, int stride, int16_t *block) 233{ 234 vector signed short src0, src1, src2, src3, src4, src5, src6, src7; 235 vector signed int s0, s1, s2, s3, s4, s5, s6, s7; 236 vector signed int s8, s9, sA, sB, sC, sD, sE, sF; 237 vector signed int t0, t1, t2, t3, t4, t5, t6, t7; 238 const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4)); 239 const vector unsigned int vec_7 = vec_splat_u32(7); 240 const vector unsigned int vec_5 = vec_splat_u32(5); 241 const vector unsigned int vec_4 = vec_splat_u32(4); 242 const vector signed int vec_4s = vec_splat_s32(4); 243 const vector unsigned int vec_3 = vec_splat_u32(3); 244 const vector unsigned int vec_2 = vec_splat_u32(2); 245 const vector unsigned int vec_1 = vec_splat_u32(1); 246 vector unsigned char tmp; 247 vector signed short tmp2, tmp3; 248 vector unsigned char perm0, perm1, p0, p1, p; 249 250 src0 = vec_ld( 0, block); 251 src1 = vec_ld( 16, block); 252 src2 = vec_ld( 32, block); 253 src3 = vec_ld( 48, block); 254 src4 = vec_ld( 64, block); 255 src5 = vec_ld( 80, block); 256 src6 = vec_ld( 96, block); 257 src7 = vec_ld(112, block); 258 259 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7); 260 s0 = vec_unpackl(src0); 261 s1 = vec_unpackl(src1); 262 s2 = vec_unpackl(src2); 263 s3 = vec_unpackl(src3); 264 s4 = vec_unpackl(src4); 265 s5 = vec_unpackl(src5); 266 s6 = vec_unpackl(src6); 267 s7 = vec_unpackl(src7); 268 s8 = vec_unpackh(src0); 269 s9 = vec_unpackh(src1); 270 sA = vec_unpackh(src2); 271 sB = vec_unpackh(src3); 272 sC = vec_unpackh(src4); 273 sD = vec_unpackh(src5); 274 sE = vec_unpackh(src6); 275 sF = vec_unpackh(src7); 276 STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s); 277 SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7); 278 STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s); 279 SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF); 280 src0 = vec_pack(s8, s0); 281 src1 = vec_pack(s9, s1); 282 src2 = vec_pack(sA, s2); 283 src3 = vec_pack(sB, s3); 284 src4 = vec_pack(sC, s4); 285 src5 = vec_pack(sD, s5); 286 src6 = vec_pack(sE, s6); 287 src7 = vec_pack(sF, s7); 288 TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7); 289 290 s0 = vec_unpackh(src0); 291 s1 = vec_unpackh(src1); 292 s2 = vec_unpackh(src2); 293 s3 = vec_unpackh(src3); 294 s8 = vec_unpackl(src0); 295 s9 = vec_unpackl(src1); 296 sA = vec_unpackl(src2); 297 sB = vec_unpackl(src3); 298 STEP4(s0, s1, s2, s3, vec_64); 299 SHIFT_VERT4(s0, s1, s2, s3); 300 STEP4(s8, s9, sA, sB, vec_64); 301 SHIFT_VERT4(s8, s9, sA, sB); 302 src0 = vec_pack(s0, s8); 303 src1 = vec_pack(s1, s9); 304 src2 = vec_pack(s2, sA); 305 src3 = vec_pack(s3, sB); 306 307 p0 = vec_lvsl (0, dest); 308 p1 = vec_lvsl (stride, dest); 309 p = vec_splat_u8 (-1); 310 perm0 = vec_mergeh (p, p0); 311 perm1 = vec_mergeh (p, p1); 312 313#define ADD(dest,src,perm) \ 314 /* *(uint64_t *)&tmp = *(uint64_t *)dest; */ \ 315 tmp = vec_ld (0, dest); \ 316 tmp2 = (vector signed short)vec_perm (tmp, vec_splat_u8(0), perm); \ 317 tmp3 = vec_adds (tmp2, src); \ 318 tmp = vec_packsu (tmp3, tmp3); \ 319 vec_ste ((vector unsigned int)tmp, 0, (unsigned int *)dest); \ 320 vec_ste ((vector unsigned int)tmp, 4, (unsigned int *)dest); 321 322 ADD (dest, src0, perm0) dest += stride; 323 ADD (dest, src1, perm1) dest += stride; 324 ADD (dest, src2, perm0) dest += stride; 325 ADD (dest, src3, perm1) 326} 327 328#define PUT_OP_U8_ALTIVEC(d, s, dst) d = s 329#define AVG_OP_U8_ALTIVEC(d, s, dst) d = vec_avg(dst, s) 330 331#define OP_U8_ALTIVEC PUT_OP_U8_ALTIVEC 332#define PREFIX_no_rnd_vc1_chroma_mc8_altivec put_no_rnd_vc1_chroma_mc8_altivec 333#include "h264chroma_template.c" 334#undef OP_U8_ALTIVEC 335#undef PREFIX_no_rnd_vc1_chroma_mc8_altivec 336 337#define OP_U8_ALTIVEC AVG_OP_U8_ALTIVEC 338#define PREFIX_no_rnd_vc1_chroma_mc8_altivec avg_no_rnd_vc1_chroma_mc8_altivec 339#include "h264chroma_template.c" 340#undef OP_U8_ALTIVEC 341#undef PREFIX_no_rnd_vc1_chroma_mc8_altivec 342 343#endif /* HAVE_ALTIVEC */ 344 345av_cold void ff_vc1dsp_init_ppc(VC1DSPContext *dsp) 346{ 347#if HAVE_ALTIVEC 348 if (!PPC_ALTIVEC(av_get_cpu_flags())) 349 return; 350 351 dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_altivec; 352 dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_altivec; 353 dsp->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_altivec; 354 dsp->avg_no_rnd_vc1_chroma_pixels_tab[0] = avg_no_rnd_vc1_chroma_mc8_altivec; 355#endif /* HAVE_ALTIVEC */ 356} 357