1/* 2 * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org> 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include "config.h" 22 23#include <stdint.h> 24#include <string.h> 25 26#include "libavutil/attributes.h" 27#include "libavutil/cpu.h" 28#include "libavutil/intreadwrite.h" 29#include "libavutil/mem_internal.h" 30#include "libavutil/ppc/cpu.h" 31#include "libavutil/ppc/util_altivec.h" 32 33#include "libavcodec/h264dec.h" 34#include "libavcodec/h264dsp.h" 35 36#if HAVE_ALTIVEC 37 38/**************************************************************************** 39 * IDCT transform: 40 ****************************************************************************/ 41 42#define VEC_1D_DCT(vb0,vb1,vb2,vb3,va0,va1,va2,va3) \ 43 /* 1st stage */ \ 44 vz0 = vec_add(vb0,vb2); /* temp[0] = Y[0] + Y[2] */ \ 45 vz1 = vec_sub(vb0,vb2); /* temp[1] = Y[0] - Y[2] */ \ 46 vz2 = vec_sra(vb1,vec_splat_u16(1)); \ 47 vz2 = vec_sub(vz2,vb3); /* temp[2] = Y[1].1/2 - Y[3] */ \ 48 vz3 = vec_sra(vb3,vec_splat_u16(1)); \ 49 vz3 = vec_add(vb1,vz3); /* temp[3] = Y[1] + Y[3].1/2 */ \ 50 /* 2nd stage: output */ \ 51 va0 = vec_add(vz0,vz3); /* x[0] = temp[0] + temp[3] */ \ 52 va1 = vec_add(vz1,vz2); /* x[1] = temp[1] + temp[2] */ \ 53 va2 = vec_sub(vz1,vz2); /* x[2] = temp[1] - temp[2] */ \ 54 va3 = vec_sub(vz0,vz3) /* x[3] = temp[0] - temp[3] */ 55 56#define VEC_TRANSPOSE_4(a0,a1,a2,a3,b0,b1,b2,b3) \ 57 b0 = vec_mergeh( a0, a0 ); \ 58 b1 = vec_mergeh( a1, a0 ); \ 59 b2 = vec_mergeh( a2, a0 ); \ 60 b3 = vec_mergeh( a3, a0 ); \ 61 a0 = vec_mergeh( b0, b2 ); \ 62 a1 = vec_mergel( b0, b2 ); \ 63 a2 = vec_mergeh( b1, b3 ); \ 64 a3 = vec_mergel( b1, b3 ); \ 65 b0 = vec_mergeh( a0, a2 ); \ 66 b1 = vec_mergel( a0, a2 ); \ 67 b2 = vec_mergeh( a1, a3 ); \ 68 b3 = vec_mergel( a1, a3 ) 69 70#if HAVE_BIGENDIAN 71#define vdst_load(d) \ 72 vdst_orig = vec_ld(0, dst); \ 73 vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask); 74#else 75#define vdst_load(d) vdst = vec_vsx_ld(0, dst) 76#endif 77 78#define VEC_LOAD_U8_ADD_S16_STORE_U8(va) \ 79 vdst_load(); \ 80 vdst_ss = (vec_s16) VEC_MERGEH(zero_u8v, vdst); \ 81 va = vec_add(va, vdst_ss); \ 82 va_u8 = vec_packsu(va, zero_s16v); \ 83 va_u32 = vec_splat((vec_u32)va_u8, 0); \ 84 vec_ste(va_u32, element, (uint32_t*)dst); 85 86static void h264_idct_add_altivec(uint8_t *dst, int16_t *block, int stride) 87{ 88 vec_s16 va0, va1, va2, va3; 89 vec_s16 vz0, vz1, vz2, vz3; 90 vec_s16 vtmp0, vtmp1, vtmp2, vtmp3; 91 vec_u8 va_u8; 92 vec_u32 va_u32; 93 vec_s16 vdst_ss; 94 const vec_u16 v6us = vec_splat_u16(6); 95 vec_u8 vdst, vdst_orig; 96 vec_u8 vdst_mask = vec_lvsl(0, dst); 97 int element = ((unsigned long)dst & 0xf) >> 2; 98 LOAD_ZERO; 99 100 block[0] += 32; /* add 32 as a DC-level for rounding */ 101 102 vtmp0 = vec_ld(0,block); 103 vtmp1 = vec_sld(vtmp0, vtmp0, 8); 104 vtmp2 = vec_ld(16,block); 105 vtmp3 = vec_sld(vtmp2, vtmp2, 8); 106 memset(block, 0, 16 * sizeof(int16_t)); 107 108 VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3); 109 VEC_TRANSPOSE_4(va0,va1,va2,va3,vtmp0,vtmp1,vtmp2,vtmp3); 110 VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3); 111 112 va0 = vec_sra(va0,v6us); 113 va1 = vec_sra(va1,v6us); 114 va2 = vec_sra(va2,v6us); 115 va3 = vec_sra(va3,v6us); 116 117 VEC_LOAD_U8_ADD_S16_STORE_U8(va0); 118 dst += stride; 119 VEC_LOAD_U8_ADD_S16_STORE_U8(va1); 120 dst += stride; 121 VEC_LOAD_U8_ADD_S16_STORE_U8(va2); 122 dst += stride; 123 VEC_LOAD_U8_ADD_S16_STORE_U8(va3); 124} 125 126#define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, d0, d1, d2, d3, d4, d5, d6, d7) {\ 127 /* a0 = SRC(0) + SRC(4); */ \ 128 vec_s16 a0v = vec_add(s0, s4); \ 129 /* a2 = SRC(0) - SRC(4); */ \ 130 vec_s16 a2v = vec_sub(s0, s4); \ 131 /* a4 = (SRC(2)>>1) - SRC(6); */ \ 132 vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6); \ 133 /* a6 = (SRC(6)>>1) + SRC(2); */ \ 134 vec_s16 a6v = vec_add(vec_sra(s6, onev), s2); \ 135 /* b0 = a0 + a6; */ \ 136 vec_s16 b0v = vec_add(a0v, a6v); \ 137 /* b2 = a2 + a4; */ \ 138 vec_s16 b2v = vec_add(a2v, a4v); \ 139 /* b4 = a2 - a4; */ \ 140 vec_s16 b4v = vec_sub(a2v, a4v); \ 141 /* b6 = a0 - a6; */ \ 142 vec_s16 b6v = vec_sub(a0v, a6v); \ 143 /* a1 = SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \ 144 /* a1 = (SRC(5)-SRC(3)) - (SRC(7) + (SRC(7)>>1)); */ \ 145 vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \ 146 /* a3 = SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \ 147 /* a3 = (SRC(7)+SRC(1)) - (SRC(3) + (SRC(3)>>1)); */ \ 148 vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\ 149 /* a5 = SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \ 150 /* a5 = (SRC(7)-SRC(1)) + SRC(5) + (SRC(5)>>1); */ \ 151 vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\ 152 /* a7 = SRC(5)+SRC(3) + SRC(1) + (SRC(1)>>1); */ \ 153 vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\ 154 /* b1 = (a7>>2) + a1; */ \ 155 vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \ 156 /* b3 = a3 + (a5>>2); */ \ 157 vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \ 158 /* b5 = (a3>>2) - a5; */ \ 159 vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \ 160 /* b7 = a7 - (a1>>2); */ \ 161 vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \ 162 /* DST(0, b0 + b7); */ \ 163 d0 = vec_add(b0v, b7v); \ 164 /* DST(1, b2 + b5); */ \ 165 d1 = vec_add(b2v, b5v); \ 166 /* DST(2, b4 + b3); */ \ 167 d2 = vec_add(b4v, b3v); \ 168 /* DST(3, b6 + b1); */ \ 169 d3 = vec_add(b6v, b1v); \ 170 /* DST(4, b6 - b1); */ \ 171 d4 = vec_sub(b6v, b1v); \ 172 /* DST(5, b4 - b3); */ \ 173 d5 = vec_sub(b4v, b3v); \ 174 /* DST(6, b2 - b5); */ \ 175 d6 = vec_sub(b2v, b5v); \ 176 /* DST(7, b0 - b7); */ \ 177 d7 = vec_sub(b0v, b7v); \ 178} 179 180#if HAVE_BIGENDIAN 181#define GET_2PERM(ldv, stv, d) \ 182 ldv = vec_lvsl(0, d); \ 183 stv = vec_lvsr(8, d); 184#define dstv_load(d) \ 185 vec_u8 hv = vec_ld( 0, d ); \ 186 vec_u8 lv = vec_ld( 7, d); \ 187 vec_u8 dstv = vec_perm( hv, lv, (vec_u8)perm_ldv ); 188#define dest_unligned_store(d) \ 189 vec_u8 edgehv; \ 190 vec_u8 bodyv = vec_perm( idstsum8, idstsum8, perm_stv ); \ 191 vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv ); \ 192 lv = vec_sel( lv, bodyv, edgelv ); \ 193 vec_st( lv, 7, d ); \ 194 hv = vec_ld( 0, d ); \ 195 edgehv = vec_perm( zero_u8v, sel, perm_stv ); \ 196 hv = vec_sel( hv, bodyv, edgehv ); \ 197 vec_st( hv, 0, d ); 198#else 199 200#define GET_2PERM(ldv, stv, d) {} 201#define dstv_load(d) vec_u8 dstv = vec_vsx_ld(0, d) 202#define dest_unligned_store(d)\ 203 vec_u8 dst8 = vec_perm((vec_u8)idstsum8, dstv, vcprm(2,3,s2,s3));\ 204 vec_vsx_st(dst8, 0, d) 205#endif /* HAVE_BIGENDIAN */ 206 207#define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \ 208 /* unaligned load */ \ 209 dstv_load(dest); \ 210 vec_s16 idct_sh6 = vec_sra(idctv, sixv); \ 211 vec_u16 dst16 = (vec_u16)VEC_MERGEH(zero_u8v, dstv); \ 212 vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16); \ 213 vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum); \ 214 /* unaligned store */ \ 215 dest_unligned_store(dest);\ 216} 217 218static void h264_idct8_add_altivec(uint8_t *dst, int16_t *dct, int stride) 219{ 220 vec_s16 s0, s1, s2, s3, s4, s5, s6, s7; 221 vec_s16 d0, d1, d2, d3, d4, d5, d6, d7; 222 vec_s16 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7; 223 224 vec_u8 perm_ldv, perm_stv; 225 GET_2PERM(perm_ldv, perm_stv, dst); 226 227 const vec_u16 onev = vec_splat_u16(1); 228 const vec_u16 twov = vec_splat_u16(2); 229 const vec_u16 sixv = vec_splat_u16(6); 230 231 const vec_u8 sel = (vec_u8) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1}; 232 LOAD_ZERO; 233 234 dct[0] += 32; // rounding for the >>6 at the end 235 236 s0 = vec_ld(0x00, (int16_t*)dct); 237 s1 = vec_ld(0x10, (int16_t*)dct); 238 s2 = vec_ld(0x20, (int16_t*)dct); 239 s3 = vec_ld(0x30, (int16_t*)dct); 240 s4 = vec_ld(0x40, (int16_t*)dct); 241 s5 = vec_ld(0x50, (int16_t*)dct); 242 s6 = vec_ld(0x60, (int16_t*)dct); 243 s7 = vec_ld(0x70, (int16_t*)dct); 244 memset(dct, 0, 64 * sizeof(int16_t)); 245 246 IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, 247 d0, d1, d2, d3, d4, d5, d6, d7); 248 249 TRANSPOSE8( d0, d1, d2, d3, d4, d5, d6, d7 ); 250 251 IDCT8_1D_ALTIVEC(d0, d1, d2, d3, d4, d5, d6, d7, 252 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7); 253 254 ALTIVEC_STORE_SUM_CLIP(&dst[0*stride], idct0, perm_ldv, perm_stv, sel); 255 ALTIVEC_STORE_SUM_CLIP(&dst[1*stride], idct1, perm_ldv, perm_stv, sel); 256 ALTIVEC_STORE_SUM_CLIP(&dst[2*stride], idct2, perm_ldv, perm_stv, sel); 257 ALTIVEC_STORE_SUM_CLIP(&dst[3*stride], idct3, perm_ldv, perm_stv, sel); 258 ALTIVEC_STORE_SUM_CLIP(&dst[4*stride], idct4, perm_ldv, perm_stv, sel); 259 ALTIVEC_STORE_SUM_CLIP(&dst[5*stride], idct5, perm_ldv, perm_stv, sel); 260 ALTIVEC_STORE_SUM_CLIP(&dst[6*stride], idct6, perm_ldv, perm_stv, sel); 261 ALTIVEC_STORE_SUM_CLIP(&dst[7*stride], idct7, perm_ldv, perm_stv, sel); 262} 263 264#if HAVE_BIGENDIAN 265#define DST_LD vec_ld 266#else 267#define DST_LD vec_vsx_ld 268#endif 269static av_always_inline void h264_idct_dc_add_internal(uint8_t *dst, int16_t *block, int stride, int size) 270{ 271 vec_s16 dc16; 272 vec_u8 dcplus, dcminus, v0, v1, v2, v3, aligner; 273 vec_s32 v_dc32; 274 LOAD_ZERO; 275 DECLARE_ALIGNED(16, int, dc); 276 int i; 277 278 dc = (block[0] + 32) >> 6; 279 block[0] = 0; 280 v_dc32 = vec_lde(0, &dc); 281 dc16 = VEC_SPLAT16((vec_s16)v_dc32, 1); 282 283 if (size == 4) 284 dc16 = VEC_SLD16(dc16, zero_s16v, 8); 285 dcplus = vec_packsu(dc16, zero_s16v); 286 dcminus = vec_packsu(vec_sub(zero_s16v, dc16), zero_s16v); 287 288#if HAVE_BIGENDIAN 289 aligner = vec_lvsr(0, dst); 290 dcplus = vec_perm(dcplus, dcplus, aligner); 291 dcminus = vec_perm(dcminus, dcminus, aligner); 292#endif 293 294 for (i = 0; i < size; i += 4) { 295 v0 = DST_LD(0, dst+0*stride); 296 v1 = DST_LD(0, dst+1*stride); 297 v2 = DST_LD(0, dst+2*stride); 298 v3 = DST_LD(0, dst+3*stride); 299 300 v0 = vec_adds(v0, dcplus); 301 v1 = vec_adds(v1, dcplus); 302 v2 = vec_adds(v2, dcplus); 303 v3 = vec_adds(v3, dcplus); 304 305 v0 = vec_subs(v0, dcminus); 306 v1 = vec_subs(v1, dcminus); 307 v2 = vec_subs(v2, dcminus); 308 v3 = vec_subs(v3, dcminus); 309 310 VEC_ST(v0, 0, dst+0*stride); 311 VEC_ST(v1, 0, dst+1*stride); 312 VEC_ST(v2, 0, dst+2*stride); 313 VEC_ST(v3, 0, dst+3*stride); 314 315 dst += 4*stride; 316 } 317} 318 319static void h264_idct_dc_add_altivec(uint8_t *dst, int16_t *block, int stride) 320{ 321 h264_idct_dc_add_internal(dst, block, stride, 4); 322} 323 324static void h264_idct8_dc_add_altivec(uint8_t *dst, int16_t *block, int stride) 325{ 326 h264_idct_dc_add_internal(dst, block, stride, 8); 327} 328 329static void h264_idct_add16_altivec(uint8_t *dst, const int *block_offset, 330 int16_t *block, int stride, 331 const uint8_t nnzc[5 * 8]) 332{ 333 int i; 334 for(i=0; i<16; i++){ 335 int nnz = nnzc[ scan8[i] ]; 336 if(nnz){ 337 if(nnz==1 && block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride); 338 else h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride); 339 } 340 } 341} 342 343static void h264_idct_add16intra_altivec(uint8_t *dst, const int *block_offset, 344 int16_t *block, int stride, 345 const uint8_t nnzc[5 * 8]) 346{ 347 int i; 348 for(i=0; i<16; i++){ 349 if(nnzc[ scan8[i] ]) h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride); 350 else if(block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride); 351 } 352} 353 354static void h264_idct8_add4_altivec(uint8_t *dst, const int *block_offset, 355 int16_t *block, int stride, 356 const uint8_t nnzc[5 * 8]) 357{ 358 int i; 359 for(i=0; i<16; i+=4){ 360 int nnz = nnzc[ scan8[i] ]; 361 if(nnz){ 362 if(nnz==1 && block[i*16]) h264_idct8_dc_add_altivec(dst + block_offset[i], block + i*16, stride); 363 else h264_idct8_add_altivec(dst + block_offset[i], block + i*16, stride); 364 } 365 } 366} 367 368static void h264_idct_add8_altivec(uint8_t **dest, const int *block_offset, 369 int16_t *block, int stride, 370 const uint8_t nnzc[15 * 8]) 371{ 372 int i, j; 373 for (j = 1; j < 3; j++) { 374 for(i = j * 16; i < j * 16 + 4; i++){ 375 if(nnzc[ scan8[i] ]) 376 h264_idct_add_altivec(dest[j-1] + block_offset[i], block + i*16, stride); 377 else if(block[i*16]) 378 h264_idct_dc_add_altivec(dest[j-1] + block_offset[i], block + i*16, stride); 379 } 380 } 381} 382 383#define transpose4x16(r0, r1, r2, r3) { \ 384 register vec_u8 r4; \ 385 register vec_u8 r5; \ 386 register vec_u8 r6; \ 387 register vec_u8 r7; \ 388 \ 389 r4 = vec_mergeh(r0, r2); /*0, 2 set 0*/ \ 390 r5 = vec_mergel(r0, r2); /*0, 2 set 1*/ \ 391 r6 = vec_mergeh(r1, r3); /*1, 3 set 0*/ \ 392 r7 = vec_mergel(r1, r3); /*1, 3 set 1*/ \ 393 \ 394 r0 = vec_mergeh(r4, r6); /*all set 0*/ \ 395 r1 = vec_mergel(r4, r6); /*all set 1*/ \ 396 r2 = vec_mergeh(r5, r7); /*all set 2*/ \ 397 r3 = vec_mergel(r5, r7); /*all set 3*/ \ 398} 399 400static inline void write16x4(uint8_t *dst, int dst_stride, 401 register vec_u8 r0, register vec_u8 r1, 402 register vec_u8 r2, register vec_u8 r3) { 403 DECLARE_ALIGNED(16, unsigned char, result)[64]; 404 uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst; 405 int int_dst_stride = dst_stride/4; 406 407 vec_st(r0, 0, result); 408 vec_st(r1, 16, result); 409 vec_st(r2, 32, result); 410 vec_st(r3, 48, result); 411 /* FIXME: there has to be a better way!!!! */ 412 *dst_int = *src_int; 413 *(dst_int+ int_dst_stride) = *(src_int + 1); 414 *(dst_int+ 2*int_dst_stride) = *(src_int + 2); 415 *(dst_int+ 3*int_dst_stride) = *(src_int + 3); 416 *(dst_int+ 4*int_dst_stride) = *(src_int + 4); 417 *(dst_int+ 5*int_dst_stride) = *(src_int + 5); 418 *(dst_int+ 6*int_dst_stride) = *(src_int + 6); 419 *(dst_int+ 7*int_dst_stride) = *(src_int + 7); 420 *(dst_int+ 8*int_dst_stride) = *(src_int + 8); 421 *(dst_int+ 9*int_dst_stride) = *(src_int + 9); 422 *(dst_int+10*int_dst_stride) = *(src_int + 10); 423 *(dst_int+11*int_dst_stride) = *(src_int + 11); 424 *(dst_int+12*int_dst_stride) = *(src_int + 12); 425 *(dst_int+13*int_dst_stride) = *(src_int + 13); 426 *(dst_int+14*int_dst_stride) = *(src_int + 14); 427 *(dst_int+15*int_dst_stride) = *(src_int + 15); 428} 429 430/** @brief performs a 6x16 transpose of data in src, and stores it to dst 431 @todo FIXME: see if we can't spare some vec_lvsl() by them factorizing 432 out of unaligned_load() */ 433#define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\ 434 register vec_u8 r0 = unaligned_load(0, src); \ 435 register vec_u8 r1 = unaligned_load( src_stride, src); \ 436 register vec_u8 r2 = unaligned_load(2* src_stride, src); \ 437 register vec_u8 r3 = unaligned_load(3* src_stride, src); \ 438 register vec_u8 r4 = unaligned_load(4* src_stride, src); \ 439 register vec_u8 r5 = unaligned_load(5* src_stride, src); \ 440 register vec_u8 r6 = unaligned_load(6* src_stride, src); \ 441 register vec_u8 r7 = unaligned_load(7* src_stride, src); \ 442 register vec_u8 r14 = unaligned_load(14*src_stride, src); \ 443 register vec_u8 r15 = unaligned_load(15*src_stride, src); \ 444 \ 445 r8 = unaligned_load( 8*src_stride, src); \ 446 r9 = unaligned_load( 9*src_stride, src); \ 447 r10 = unaligned_load(10*src_stride, src); \ 448 r11 = unaligned_load(11*src_stride, src); \ 449 r12 = unaligned_load(12*src_stride, src); \ 450 r13 = unaligned_load(13*src_stride, src); \ 451 \ 452 /*Merge first pairs*/ \ 453 r0 = vec_mergeh(r0, r8); /*0, 8*/ \ 454 r1 = vec_mergeh(r1, r9); /*1, 9*/ \ 455 r2 = vec_mergeh(r2, r10); /*2,10*/ \ 456 r3 = vec_mergeh(r3, r11); /*3,11*/ \ 457 r4 = vec_mergeh(r4, r12); /*4,12*/ \ 458 r5 = vec_mergeh(r5, r13); /*5,13*/ \ 459 r6 = vec_mergeh(r6, r14); /*6,14*/ \ 460 r7 = vec_mergeh(r7, r15); /*7,15*/ \ 461 \ 462 /*Merge second pairs*/ \ 463 r8 = vec_mergeh(r0, r4); /*0,4, 8,12 set 0*/ \ 464 r9 = vec_mergel(r0, r4); /*0,4, 8,12 set 1*/ \ 465 r10 = vec_mergeh(r1, r5); /*1,5, 9,13 set 0*/ \ 466 r11 = vec_mergel(r1, r5); /*1,5, 9,13 set 1*/ \ 467 r12 = vec_mergeh(r2, r6); /*2,6,10,14 set 0*/ \ 468 r13 = vec_mergel(r2, r6); /*2,6,10,14 set 1*/ \ 469 r14 = vec_mergeh(r3, r7); /*3,7,11,15 set 0*/ \ 470 r15 = vec_mergel(r3, r7); /*3,7,11,15 set 1*/ \ 471 \ 472 /*Third merge*/ \ 473 r0 = vec_mergeh(r8, r12); /*0,2,4,6,8,10,12,14 set 0*/ \ 474 r1 = vec_mergel(r8, r12); /*0,2,4,6,8,10,12,14 set 1*/ \ 475 r2 = vec_mergeh(r9, r13); /*0,2,4,6,8,10,12,14 set 2*/ \ 476 r4 = vec_mergeh(r10, r14); /*1,3,5,7,9,11,13,15 set 0*/ \ 477 r5 = vec_mergel(r10, r14); /*1,3,5,7,9,11,13,15 set 1*/ \ 478 r6 = vec_mergeh(r11, r15); /*1,3,5,7,9,11,13,15 set 2*/ \ 479 /* Don't need to compute 3 and 7*/ \ 480 \ 481 /*Final merge*/ \ 482 r8 = vec_mergeh(r0, r4); /*all set 0*/ \ 483 r9 = vec_mergel(r0, r4); /*all set 1*/ \ 484 r10 = vec_mergeh(r1, r5); /*all set 2*/ \ 485 r11 = vec_mergel(r1, r5); /*all set 3*/ \ 486 r12 = vec_mergeh(r2, r6); /*all set 4*/ \ 487 r13 = vec_mergel(r2, r6); /*all set 5*/ \ 488 /* Don't need to compute 14 and 15*/ \ 489 \ 490} 491 492// out: o = |x-y| < a 493static inline vec_u8 diff_lt_altivec ( register vec_u8 x, 494 register vec_u8 y, 495 register vec_u8 a) { 496 497 register vec_u8 diff = vec_subs(x, y); 498 register vec_u8 diffneg = vec_subs(y, x); 499 register vec_u8 o = vec_or(diff, diffneg); /* |x-y| */ 500 o = (vec_u8)vec_cmplt(o, a); 501 return o; 502} 503 504static inline vec_u8 h264_deblock_mask ( register vec_u8 p0, 505 register vec_u8 p1, 506 register vec_u8 q0, 507 register vec_u8 q1, 508 register vec_u8 alpha, 509 register vec_u8 beta) { 510 511 register vec_u8 mask; 512 register vec_u8 tempmask; 513 514 mask = diff_lt_altivec(p0, q0, alpha); 515 tempmask = diff_lt_altivec(p1, p0, beta); 516 mask = vec_and(mask, tempmask); 517 tempmask = diff_lt_altivec(q1, q0, beta); 518 mask = vec_and(mask, tempmask); 519 520 return mask; 521} 522 523// out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0) 524static inline vec_u8 h264_deblock_q1(register vec_u8 p0, 525 register vec_u8 p1, 526 register vec_u8 p2, 527 register vec_u8 q0, 528 register vec_u8 tc0) { 529 530 register vec_u8 average = vec_avg(p0, q0); 531 register vec_u8 temp; 532 register vec_u8 unclipped; 533 register vec_u8 ones; 534 register vec_u8 max; 535 register vec_u8 min; 536 register vec_u8 newp1; 537 538 temp = vec_xor(average, p2); 539 average = vec_avg(average, p2); /*avg(p2, avg(p0, q0)) */ 540 ones = vec_splat_u8(1); 541 temp = vec_and(temp, ones); /*(p2^avg(p0, q0)) & 1 */ 542 unclipped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */ 543 max = vec_adds(p1, tc0); 544 min = vec_subs(p1, tc0); 545 newp1 = vec_max(min, unclipped); 546 newp1 = vec_min(max, newp1); 547 return newp1; 548} 549 550#define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) { \ 551 \ 552 const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4)); \ 553 \ 554 register vec_u8 pq0bit = vec_xor(p0,q0); \ 555 register vec_u8 q1minus; \ 556 register vec_u8 p0minus; \ 557 register vec_u8 stage1; \ 558 register vec_u8 stage2; \ 559 register vec_u8 vec160; \ 560 register vec_u8 delta; \ 561 register vec_u8 deltaneg; \ 562 \ 563 q1minus = vec_nor(q1, q1); /* 255 - q1 */ \ 564 stage1 = vec_avg(p1, q1minus); /* (p1 - q1 + 256)>>1 */ \ 565 stage2 = vec_sr(stage1, vec_splat_u8(1)); /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */ \ 566 p0minus = vec_nor(p0, p0); /* 255 - p0 */ \ 567 stage1 = vec_avg(q0, p0minus); /* (q0 - p0 + 256)>>1 */ \ 568 pq0bit = vec_and(pq0bit, vec_splat_u8(1)); \ 569 stage2 = vec_avg(stage2, pq0bit); /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */ \ 570 stage2 = vec_adds(stage2, stage1); /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */ \ 571 vec160 = vec_ld(0, &A0v); \ 572 deltaneg = vec_subs(vec160, stage2); /* -d */ \ 573 delta = vec_subs(stage2, vec160); /* d */ \ 574 deltaneg = vec_min(tc0masked, deltaneg); \ 575 delta = vec_min(tc0masked, delta); \ 576 p0 = vec_subs(p0, deltaneg); \ 577 q0 = vec_subs(q0, delta); \ 578 p0 = vec_adds(p0, delta); \ 579 q0 = vec_adds(q0, deltaneg); \ 580} 581 582#define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) { \ 583 DECLARE_ALIGNED(16, unsigned char, temp)[16]; \ 584 register vec_u8 alphavec; \ 585 register vec_u8 betavec; \ 586 register vec_u8 mask; \ 587 register vec_u8 p1mask; \ 588 register vec_u8 q1mask; \ 589 register vector signed char tc0vec; \ 590 register vec_u8 finaltc0; \ 591 register vec_u8 tc0masked; \ 592 register vec_u8 newp1; \ 593 register vec_u8 newq1; \ 594 \ 595 temp[0] = alpha; \ 596 temp[1] = beta; \ 597 alphavec = vec_ld(0, temp); \ 598 betavec = vec_splat(alphavec, 0x1); \ 599 alphavec = vec_splat(alphavec, 0x0); \ 600 mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */ \ 601 \ 602 AV_COPY32(temp, tc0); \ 603 tc0vec = vec_ld(0, (signed char*)temp); \ 604 tc0vec = vec_mergeh(tc0vec, tc0vec); \ 605 tc0vec = vec_mergeh(tc0vec, tc0vec); \ 606 mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1))); /* if tc0[i] >= 0 */ \ 607 finaltc0 = vec_and((vec_u8)tc0vec, mask); /* tc = tc0 */ \ 608 \ 609 p1mask = diff_lt_altivec(p2, p0, betavec); \ 610 p1mask = vec_and(p1mask, mask); /* if ( |p2 - p0| < beta) */ \ 611 tc0masked = vec_and(p1mask, (vec_u8)tc0vec); \ 612 finaltc0 = vec_sub(finaltc0, p1mask); /* tc++ */ \ 613 newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked); \ 614 /*end if*/ \ 615 \ 616 q1mask = diff_lt_altivec(q2, q0, betavec); \ 617 q1mask = vec_and(q1mask, mask); /* if ( |q2 - q0| < beta ) */\ 618 tc0masked = vec_and(q1mask, (vec_u8)tc0vec); \ 619 finaltc0 = vec_sub(finaltc0, q1mask); /* tc++ */ \ 620 newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked); \ 621 /*end if*/ \ 622 \ 623 h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0); \ 624 p1 = newp1; \ 625 q1 = newq1; \ 626} 627 628static void h264_v_loop_filter_luma_altivec(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int8_t *tc0) { 629 630 if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0) { 631 register vec_u8 p2 = vec_ld(-3*stride, pix); 632 register vec_u8 p1 = vec_ld(-2*stride, pix); 633 register vec_u8 p0 = vec_ld(-1*stride, pix); 634 register vec_u8 q0 = vec_ld(0, pix); 635 register vec_u8 q1 = vec_ld(stride, pix); 636 register vec_u8 q2 = vec_ld(2*stride, pix); 637 h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0); 638 vec_st(p1, -2*stride, pix); 639 vec_st(p0, -1*stride, pix); 640 vec_st(q0, 0, pix); 641 vec_st(q1, stride, pix); 642 } 643} 644 645static void h264_h_loop_filter_luma_altivec(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int8_t *tc0) { 646 647 register vec_u8 line0, line1, line2, line3, line4, line5; 648 if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0) 649 return; 650 readAndTranspose16x6(pix-3, stride, line0, line1, line2, line3, line4, line5); 651 h264_loop_filter_luma_altivec(line0, line1, line2, line3, line4, line5, alpha, beta, tc0); 652 transpose4x16(line1, line2, line3, line4); 653 write16x4(pix-2, stride, line1, line2, line3, line4); 654} 655 656static av_always_inline 657void weight_h264_W_altivec(uint8_t *block, int stride, int height, 658 int log2_denom, int weight, int offset, int w) 659{ 660 int y, aligned; 661 vec_u8 vblock; 662 vec_s16 vtemp, vweight, voffset, v0, v1; 663 vec_u16 vlog2_denom; 664 DECLARE_ALIGNED(16, int32_t, temp)[4]; 665 LOAD_ZERO; 666 667 offset <<= log2_denom; 668 if(log2_denom) offset += 1<<(log2_denom-1); 669 temp[0] = log2_denom; 670 temp[1] = weight; 671 temp[2] = offset; 672 673 vtemp = (vec_s16)vec_ld(0, temp); 674#if !HAVE_BIGENDIAN 675 vtemp =(vec_s16)vec_perm(vtemp, vtemp, vcswapi2s(0,1,2,3)); 676#endif 677 vlog2_denom = (vec_u16)vec_splat(vtemp, 1); 678 vweight = vec_splat(vtemp, 3); 679 voffset = vec_splat(vtemp, 5); 680 aligned = !((unsigned long)block & 0xf); 681 682 for (y = 0; y < height; y++) { 683 vblock = vec_ld(0, block); 684 685 v0 = (vec_s16)VEC_MERGEH(zero_u8v, vblock); 686 v1 = (vec_s16)VEC_MERGEL(zero_u8v, vblock); 687 688 if (w == 16 || aligned) { 689 v0 = vec_mladd(v0, vweight, zero_s16v); 690 v0 = vec_adds(v0, voffset); 691 v0 = vec_sra(v0, vlog2_denom); 692 } 693 if (w == 16 || !aligned) { 694 v1 = vec_mladd(v1, vweight, zero_s16v); 695 v1 = vec_adds(v1, voffset); 696 v1 = vec_sra(v1, vlog2_denom); 697 } 698 vblock = vec_packsu(v0, v1); 699 vec_st(vblock, 0, block); 700 701 block += stride; 702 } 703} 704 705static av_always_inline 706void biweight_h264_W_altivec(uint8_t *dst, uint8_t *src, int stride, int height, 707 int log2_denom, int weightd, int weights, int offset, int w) 708{ 709 int y, dst_aligned, src_aligned; 710 vec_u8 vsrc, vdst; 711 vec_s16 vtemp, vweights, vweightd, voffset, v0, v1, v2, v3; 712 vec_u16 vlog2_denom; 713 DECLARE_ALIGNED(16, int32_t, temp)[4]; 714 LOAD_ZERO; 715 716 offset = ((offset + 1) | 1) << log2_denom; 717 temp[0] = log2_denom+1; 718 temp[1] = weights; 719 temp[2] = weightd; 720 temp[3] = offset; 721 722 vtemp = (vec_s16)vec_ld(0, temp); 723#if !HAVE_BIGENDIAN 724 vtemp =(vec_s16)vec_perm(vtemp, vtemp, vcswapi2s(0,1,2,3)); 725#endif 726 vlog2_denom = (vec_u16)vec_splat(vtemp, 1); 727 vweights = vec_splat(vtemp, 3); 728 vweightd = vec_splat(vtemp, 5); 729 voffset = vec_splat(vtemp, 7); 730 dst_aligned = !((unsigned long)dst & 0xf); 731 src_aligned = !((unsigned long)src & 0xf); 732 733 for (y = 0; y < height; y++) { 734 vdst = vec_ld(0, dst); 735 vsrc = vec_ld(0, src); 736 737 v0 = (vec_s16)VEC_MERGEH(zero_u8v, vdst); 738 v1 = (vec_s16)VEC_MERGEL(zero_u8v, vdst); 739 v2 = (vec_s16)VEC_MERGEH(zero_u8v, vsrc); 740 v3 = (vec_s16)VEC_MERGEL(zero_u8v, vsrc); 741 742 if (w == 8) { 743 if (src_aligned) 744 v3 = v2; 745 else 746 v2 = v3; 747 } 748 749 if (w == 16 || dst_aligned) { 750 v0 = vec_mladd(v0, vweightd, zero_s16v); 751 v2 = vec_mladd(v2, vweights, zero_s16v); 752 753 v0 = vec_adds(v0, voffset); 754 v0 = vec_adds(v0, v2); 755 v0 = vec_sra(v0, vlog2_denom); 756 } 757 if (w == 16 || !dst_aligned) { 758 v1 = vec_mladd(v1, vweightd, zero_s16v); 759 v3 = vec_mladd(v3, vweights, zero_s16v); 760 761 v1 = vec_adds(v1, voffset); 762 v1 = vec_adds(v1, v3); 763 v1 = vec_sra(v1, vlog2_denom); 764 } 765 vdst = vec_packsu(v0, v1); 766 vec_st(vdst, 0, dst); 767 768 dst += stride; 769 src += stride; 770 } 771} 772 773#define H264_WEIGHT(W) \ 774static void weight_h264_pixels ## W ## _altivec(uint8_t *block, ptrdiff_t stride, int height, \ 775 int log2_denom, int weight, int offset) \ 776{ \ 777 weight_h264_W_altivec(block, stride, height, log2_denom, weight, offset, W); \ 778}\ 779static void biweight_h264_pixels ## W ## _altivec(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, \ 780 int log2_denom, int weightd, int weights, int offset) \ 781{ \ 782 biweight_h264_W_altivec(dst, src, stride, height, log2_denom, weightd, weights, offset, W); \ 783} 784 785H264_WEIGHT(16) 786H264_WEIGHT( 8) 787#endif /* HAVE_ALTIVEC */ 788 789av_cold void ff_h264dsp_init_ppc(H264DSPContext *c, const int bit_depth, 790 const int chroma_format_idc) 791{ 792#if HAVE_ALTIVEC 793 if (!PPC_ALTIVEC(av_get_cpu_flags())) 794 return; 795 796 if (bit_depth == 8) { 797 c->h264_idct_add = h264_idct_add_altivec; 798 if (chroma_format_idc <= 1) 799 c->h264_idct_add8 = h264_idct_add8_altivec; 800 c->h264_idct_add16 = h264_idct_add16_altivec; 801 c->h264_idct_add16intra = h264_idct_add16intra_altivec; 802 c->h264_idct_dc_add= h264_idct_dc_add_altivec; 803 c->h264_idct8_dc_add = h264_idct8_dc_add_altivec; 804 c->h264_idct8_add = h264_idct8_add_altivec; 805 c->h264_idct8_add4 = h264_idct8_add4_altivec; 806 c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec; 807 c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec; 808 809 c->weight_h264_pixels_tab[0] = weight_h264_pixels16_altivec; 810 c->weight_h264_pixels_tab[1] = weight_h264_pixels8_altivec; 811 c->biweight_h264_pixels_tab[0] = biweight_h264_pixels16_altivec; 812 c->biweight_h264_pixels_tab[1] = biweight_h264_pixels8_altivec; 813 } 814#endif /* HAVE_ALTIVEC */ 815} 816