1/* 2 * Copyright (C) 2011-2012 Michael Niedermayer (michaelni@gmx.at) 3 * 4 * This file is part of libswresample 5 * 6 * libswresample 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 * libswresample 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 libswresample; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include "swresample_internal.h" 22#include "libavutil/avassert.h" 23#include "libavutil/channel_layout.h" 24 25#define TEMPLATE_REMATRIX_FLT 26#include "rematrix_template.c" 27#undef TEMPLATE_REMATRIX_FLT 28 29#define TEMPLATE_REMATRIX_DBL 30#include "rematrix_template.c" 31#undef TEMPLATE_REMATRIX_DBL 32 33#define TEMPLATE_REMATRIX_S16 34#include "rematrix_template.c" 35#undef TEMPLATE_REMATRIX_S16 36 37#define TEMPLATE_REMATRIX_S32 38#include "rematrix_template.c" 39#undef TEMPLATE_REMATRIX_S32 40 41#define FRONT_LEFT 0 42#define FRONT_RIGHT 1 43#define FRONT_CENTER 2 44#define LOW_FREQUENCY 3 45#define BACK_LEFT 4 46#define BACK_RIGHT 5 47#define FRONT_LEFT_OF_CENTER 6 48#define FRONT_RIGHT_OF_CENTER 7 49#define BACK_CENTER 8 50#define SIDE_LEFT 9 51#define SIDE_RIGHT 10 52#define TOP_CENTER 11 53#define TOP_FRONT_LEFT 12 54#define TOP_FRONT_CENTER 13 55#define TOP_FRONT_RIGHT 14 56#define TOP_BACK_LEFT 15 57#define TOP_BACK_CENTER 16 58#define TOP_BACK_RIGHT 17 59 60int swr_set_matrix(struct SwrContext *s, const double *matrix, int stride) 61{ 62 int nb_in, nb_out, in, out; 63 64 if (!s || s->in_convert) // s needs to be allocated but not initialized 65 return AVERROR(EINVAL); 66 memset(s->matrix, 0, sizeof(s->matrix)); 67 nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout); 68 nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout); 69 for (out = 0; out < nb_out; out++) { 70 for (in = 0; in < nb_in; in++) 71 s->matrix[out][in] = matrix[in]; 72 matrix += stride; 73 } 74 s->rematrix_custom = 1; 75 return 0; 76} 77 78static int even(int64_t layout){ 79 if(!layout) return 1; 80 if(layout&(layout-1)) return 1; 81 return 0; 82} 83 84static int clean_layout(SwrContext *s, int64_t layout){ 85 if(layout && layout != AV_CH_FRONT_CENTER && !(layout&(layout-1))) { 86 char buf[128]; 87 av_get_channel_layout_string(buf, sizeof(buf), -1, layout); 88 av_log(s, AV_LOG_VERBOSE, "Treating %s as mono\n", buf); 89 return AV_CH_FRONT_CENTER; 90 } 91 92 return layout; 93} 94 95static int sane_layout(int64_t layout){ 96 if(!(layout & AV_CH_LAYOUT_SURROUND)) // at least 1 front speaker 97 return 0; 98 if(!even(layout & (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT))) // no asymetric front 99 return 0; 100 if(!even(layout & (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT))) // no asymetric side 101 return 0; 102 if(!even(layout & (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT))) 103 return 0; 104 if(!even(layout & (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER))) 105 return 0; 106 if(av_get_channel_layout_nb_channels(layout) >= SWR_CH_MAX) 107 return 0; 108 109 return 1; 110} 111 112av_cold static int auto_matrix(SwrContext *s) 113{ 114 int i, j, out_i; 115 double matrix[64][64]={{0}}; 116 int64_t unaccounted, in_ch_layout, out_ch_layout; 117 double maxcoef=0; 118 char buf[128]; 119 const int matrix_encoding = s->matrix_encoding; 120 float maxval; 121 122 in_ch_layout = clean_layout(s, s->in_ch_layout); 123 out_ch_layout = clean_layout(s, s->out_ch_layout); 124 125 if( out_ch_layout == AV_CH_LAYOUT_STEREO_DOWNMIX 126 && (in_ch_layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == 0 127 ) 128 out_ch_layout = AV_CH_LAYOUT_STEREO; 129 130 if( in_ch_layout == AV_CH_LAYOUT_STEREO_DOWNMIX 131 && (out_ch_layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == 0 132 ) 133 in_ch_layout = AV_CH_LAYOUT_STEREO; 134 135 if(!sane_layout(in_ch_layout)){ 136 av_get_channel_layout_string(buf, sizeof(buf), -1, s->in_ch_layout); 137 av_log(s, AV_LOG_ERROR, "Input channel layout '%s' is not supported\n", buf); 138 return AVERROR(EINVAL); 139 } 140 141 if(!sane_layout(out_ch_layout)){ 142 av_get_channel_layout_string(buf, sizeof(buf), -1, s->out_ch_layout); 143 av_log(s, AV_LOG_ERROR, "Output channel layout '%s' is not supported\n", buf); 144 return AVERROR(EINVAL); 145 } 146 147 memset(s->matrix, 0, sizeof(s->matrix)); 148 for(i=0; i<64; i++){ 149 if(in_ch_layout & out_ch_layout & (1ULL<<i)) 150 matrix[i][i]= 1.0; 151 } 152 153 unaccounted= in_ch_layout & ~out_ch_layout; 154 155//FIXME implement dolby surround 156//FIXME implement full ac3 157 158 159 if(unaccounted & AV_CH_FRONT_CENTER){ 160 if((out_ch_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO){ 161 if(in_ch_layout & AV_CH_LAYOUT_STEREO) { 162 matrix[ FRONT_LEFT][FRONT_CENTER]+= s->clev; 163 matrix[FRONT_RIGHT][FRONT_CENTER]+= s->clev; 164 } else { 165 matrix[ FRONT_LEFT][FRONT_CENTER]+= M_SQRT1_2; 166 matrix[FRONT_RIGHT][FRONT_CENTER]+= M_SQRT1_2; 167 } 168 }else 169 av_assert0(0); 170 } 171 if(unaccounted & AV_CH_LAYOUT_STEREO){ 172 if(out_ch_layout & AV_CH_FRONT_CENTER){ 173 matrix[FRONT_CENTER][ FRONT_LEFT]+= M_SQRT1_2; 174 matrix[FRONT_CENTER][FRONT_RIGHT]+= M_SQRT1_2; 175 if(in_ch_layout & AV_CH_FRONT_CENTER) 176 matrix[FRONT_CENTER][ FRONT_CENTER] = s->clev*sqrt(2); 177 }else 178 av_assert0(0); 179 } 180 181 if(unaccounted & AV_CH_BACK_CENTER){ 182 if(out_ch_layout & AV_CH_BACK_LEFT){ 183 matrix[ BACK_LEFT][BACK_CENTER]+= M_SQRT1_2; 184 matrix[BACK_RIGHT][BACK_CENTER]+= M_SQRT1_2; 185 }else if(out_ch_layout & AV_CH_SIDE_LEFT){ 186 matrix[ SIDE_LEFT][BACK_CENTER]+= M_SQRT1_2; 187 matrix[SIDE_RIGHT][BACK_CENTER]+= M_SQRT1_2; 188 }else if(out_ch_layout & AV_CH_FRONT_LEFT){ 189 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY || 190 matrix_encoding == AV_MATRIX_ENCODING_DPLII) { 191 if (unaccounted & (AV_CH_BACK_LEFT | AV_CH_SIDE_LEFT)) { 192 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev * M_SQRT1_2; 193 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev * M_SQRT1_2; 194 } else { 195 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev; 196 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev; 197 } 198 } else { 199 matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*M_SQRT1_2; 200 matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2; 201 } 202 }else if(out_ch_layout & AV_CH_FRONT_CENTER){ 203 matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2; 204 }else 205 av_assert0(0); 206 } 207 if(unaccounted & AV_CH_BACK_LEFT){ 208 if(out_ch_layout & AV_CH_BACK_CENTER){ 209 matrix[BACK_CENTER][ BACK_LEFT]+= M_SQRT1_2; 210 matrix[BACK_CENTER][BACK_RIGHT]+= M_SQRT1_2; 211 }else if(out_ch_layout & AV_CH_SIDE_LEFT){ 212 if(in_ch_layout & AV_CH_SIDE_LEFT){ 213 matrix[ SIDE_LEFT][ BACK_LEFT]+= M_SQRT1_2; 214 matrix[SIDE_RIGHT][BACK_RIGHT]+= M_SQRT1_2; 215 }else{ 216 matrix[ SIDE_LEFT][ BACK_LEFT]+= 1.0; 217 matrix[SIDE_RIGHT][BACK_RIGHT]+= 1.0; 218 } 219 }else if(out_ch_layout & AV_CH_FRONT_LEFT){ 220 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) { 221 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * M_SQRT1_2; 222 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2; 223 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2; 224 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * M_SQRT1_2; 225 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) { 226 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * SQRT3_2; 227 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2; 228 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2; 229 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * SQRT3_2; 230 } else { 231 matrix[ FRONT_LEFT][ BACK_LEFT] += s->slev; 232 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev; 233 } 234 }else if(out_ch_layout & AV_CH_FRONT_CENTER){ 235 matrix[ FRONT_CENTER][BACK_LEFT ]+= s->slev*M_SQRT1_2; 236 matrix[ FRONT_CENTER][BACK_RIGHT]+= s->slev*M_SQRT1_2; 237 }else 238 av_assert0(0); 239 } 240 241 if(unaccounted & AV_CH_SIDE_LEFT){ 242 if(out_ch_layout & AV_CH_BACK_LEFT){ 243 /* if back channels do not exist in the input, just copy side 244 channels to back channels, otherwise mix side into back */ 245 if (in_ch_layout & AV_CH_BACK_LEFT) { 246 matrix[BACK_LEFT ][SIDE_LEFT ] += M_SQRT1_2; 247 matrix[BACK_RIGHT][SIDE_RIGHT] += M_SQRT1_2; 248 } else { 249 matrix[BACK_LEFT ][SIDE_LEFT ] += 1.0; 250 matrix[BACK_RIGHT][SIDE_RIGHT] += 1.0; 251 } 252 }else if(out_ch_layout & AV_CH_BACK_CENTER){ 253 matrix[BACK_CENTER][ SIDE_LEFT]+= M_SQRT1_2; 254 matrix[BACK_CENTER][SIDE_RIGHT]+= M_SQRT1_2; 255 }else if(out_ch_layout & AV_CH_FRONT_LEFT){ 256 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) { 257 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * M_SQRT1_2; 258 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2; 259 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2; 260 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * M_SQRT1_2; 261 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) { 262 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * SQRT3_2; 263 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2; 264 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2; 265 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * SQRT3_2; 266 } else { 267 matrix[ FRONT_LEFT][ SIDE_LEFT] += s->slev; 268 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev; 269 } 270 }else if(out_ch_layout & AV_CH_FRONT_CENTER){ 271 matrix[ FRONT_CENTER][SIDE_LEFT ]+= s->slev*M_SQRT1_2; 272 matrix[ FRONT_CENTER][SIDE_RIGHT]+= s->slev*M_SQRT1_2; 273 }else 274 av_assert0(0); 275 } 276 277 if(unaccounted & AV_CH_FRONT_LEFT_OF_CENTER){ 278 if(out_ch_layout & AV_CH_FRONT_LEFT){ 279 matrix[ FRONT_LEFT][ FRONT_LEFT_OF_CENTER]+= 1.0; 280 matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER]+= 1.0; 281 }else if(out_ch_layout & AV_CH_FRONT_CENTER){ 282 matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= M_SQRT1_2; 283 matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= M_SQRT1_2; 284 }else 285 av_assert0(0); 286 } 287 /* mix LFE into front left/right or center */ 288 if (unaccounted & AV_CH_LOW_FREQUENCY) { 289 if (out_ch_layout & AV_CH_FRONT_CENTER) { 290 matrix[FRONT_CENTER][LOW_FREQUENCY] += s->lfe_mix_level; 291 } else if (out_ch_layout & AV_CH_FRONT_LEFT) { 292 matrix[FRONT_LEFT ][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2; 293 matrix[FRONT_RIGHT][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2; 294 } else 295 av_assert0(0); 296 } 297 298 for(out_i=i=0; i<64; i++){ 299 double sum=0; 300 int in_i=0; 301 for(j=0; j<64; j++){ 302 s->matrix[out_i][in_i]= matrix[i][j]; 303 if(matrix[i][j]){ 304 sum += fabs(matrix[i][j]); 305 } 306 if(in_ch_layout & (1ULL<<j)) 307 in_i++; 308 } 309 maxcoef= FFMAX(maxcoef, sum); 310 if(out_ch_layout & (1ULL<<i)) 311 out_i++; 312 } 313 if(s->rematrix_volume < 0) 314 maxcoef = -s->rematrix_volume; 315 316 if (s->rematrix_maxval > 0) { 317 maxval = s->rematrix_maxval; 318 } else if ( av_get_packed_sample_fmt(s->out_sample_fmt) < AV_SAMPLE_FMT_FLT 319 || av_get_packed_sample_fmt(s->int_sample_fmt) < AV_SAMPLE_FMT_FLT) { 320 maxval = 1.0; 321 } else 322 maxval = INT_MAX; 323 324 if(maxcoef > maxval || s->rematrix_volume < 0){ 325 maxcoef /= maxval; 326 for(i=0; i<SWR_CH_MAX; i++) 327 for(j=0; j<SWR_CH_MAX; j++){ 328 s->matrix[i][j] /= maxcoef; 329 } 330 } 331 332 if(s->rematrix_volume > 0){ 333 for(i=0; i<SWR_CH_MAX; i++) 334 for(j=0; j<SWR_CH_MAX; j++){ 335 s->matrix[i][j] *= s->rematrix_volume; 336 } 337 } 338 339 for(i=0; i<av_get_channel_layout_nb_channels(out_ch_layout); i++){ 340 for(j=0; j<av_get_channel_layout_nb_channels(in_ch_layout); j++){ 341 av_log(NULL, AV_LOG_DEBUG, "%f ", s->matrix[i][j]); 342 } 343 av_log(NULL, AV_LOG_DEBUG, "\n"); 344 } 345 return 0; 346} 347 348av_cold int swri_rematrix_init(SwrContext *s){ 349 int i, j; 350 int nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout); 351 int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout); 352 353 s->mix_any_f = NULL; 354 355 if (!s->rematrix_custom) { 356 int r = auto_matrix(s); 357 if (r) 358 return r; 359 } 360 if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){ 361 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int)); 362 s->native_one = av_mallocz(sizeof(int)); 363 for (i = 0; i < nb_out; i++) 364 for (j = 0; j < nb_in; j++) 365 ((int*)s->native_matrix)[i * nb_in + j] = lrintf(s->matrix[i][j] * 32768); 366 *((int*)s->native_one) = 32768; 367 s->mix_1_1_f = (mix_1_1_func_type*)copy_s16; 368 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s16; 369 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s16(s); 370 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){ 371 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(float)); 372 s->native_one = av_mallocz(sizeof(float)); 373 for (i = 0; i < nb_out; i++) 374 for (j = 0; j < nb_in; j++) 375 ((float*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j]; 376 *((float*)s->native_one) = 1.0; 377 s->mix_1_1_f = (mix_1_1_func_type*)copy_float; 378 s->mix_2_1_f = (mix_2_1_func_type*)sum2_float; 379 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_float(s); 380 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){ 381 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double)); 382 s->native_one = av_mallocz(sizeof(double)); 383 for (i = 0; i < nb_out; i++) 384 for (j = 0; j < nb_in; j++) 385 ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j]; 386 *((double*)s->native_one) = 1.0; 387 s->mix_1_1_f = (mix_1_1_func_type*)copy_double; 388 s->mix_2_1_f = (mix_2_1_func_type*)sum2_double; 389 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_double(s); 390 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_S32P){ 391 // Only for dithering currently 392// s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double)); 393 s->native_one = av_mallocz(sizeof(int)); 394// for (i = 0; i < nb_out; i++) 395// for (j = 0; j < nb_in; j++) 396// ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j]; 397 *((int*)s->native_one) = 32768; 398 s->mix_1_1_f = (mix_1_1_func_type*)copy_s32; 399 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s32; 400 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s32(s); 401 }else 402 av_assert0(0); 403 //FIXME quantize for integeres 404 for (i = 0; i < SWR_CH_MAX; i++) { 405 int ch_in=0; 406 for (j = 0; j < SWR_CH_MAX; j++) { 407 s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768); 408 if(s->matrix[i][j]) 409 s->matrix_ch[i][++ch_in]= j; 410 } 411 s->matrix_ch[i][0]= ch_in; 412 } 413 414 if(HAVE_YASM && HAVE_MMX) swri_rematrix_init_x86(s); 415 416 return 0; 417} 418 419av_cold void swri_rematrix_free(SwrContext *s){ 420 av_freep(&s->native_matrix); 421 av_freep(&s->native_one); 422 av_freep(&s->native_simd_matrix); 423 av_freep(&s->native_simd_one); 424} 425 426int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy){ 427 int out_i, in_i, i, j; 428 int len1 = 0; 429 int off = 0; 430 431 if(s->mix_any_f) { 432 s->mix_any_f(out->ch, (const uint8_t **)in->ch, s->native_matrix, len); 433 return 0; 434 } 435 436 if(s->mix_2_1_simd || s->mix_1_1_simd){ 437 len1= len&~15; 438 off = len1 * out->bps; 439 } 440 441 av_assert0(!s->out_ch_layout || out->ch_count == av_get_channel_layout_nb_channels(s->out_ch_layout)); 442 av_assert0(!s-> in_ch_layout || in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout)); 443 444 for(out_i=0; out_i<out->ch_count; out_i++){ 445 switch(s->matrix_ch[out_i][0]){ 446 case 0: 447 if(mustcopy) 448 memset(out->ch[out_i], 0, len * av_get_bytes_per_sample(s->int_sample_fmt)); 449 break; 450 case 1: 451 in_i= s->matrix_ch[out_i][1]; 452 if(s->matrix[out_i][in_i]!=1.0){ 453 if(s->mix_1_1_simd && len1) 454 s->mix_1_1_simd(out->ch[out_i] , in->ch[in_i] , s->native_simd_matrix, in->ch_count*out_i + in_i, len1); 455 if(len != len1) 456 s->mix_1_1_f (out->ch[out_i]+off, in->ch[in_i]+off, s->native_matrix, in->ch_count*out_i + in_i, len-len1); 457 }else if(mustcopy){ 458 memcpy(out->ch[out_i], in->ch[in_i], len*out->bps); 459 }else{ 460 out->ch[out_i]= in->ch[in_i]; 461 } 462 break; 463 case 2: { 464 int in_i1 = s->matrix_ch[out_i][1]; 465 int in_i2 = s->matrix_ch[out_i][2]; 466 if(s->mix_2_1_simd && len1) 467 s->mix_2_1_simd(out->ch[out_i] , in->ch[in_i1] , in->ch[in_i2] , s->native_simd_matrix, in->ch_count*out_i + in_i1, in->ch_count*out_i + in_i2, len1); 468 else 469 s->mix_2_1_f (out->ch[out_i] , in->ch[in_i1] , in->ch[in_i2] , s->native_matrix, in->ch_count*out_i + in_i1, in->ch_count*out_i + in_i2, len1); 470 if(len != len1) 471 s->mix_2_1_f (out->ch[out_i]+off, in->ch[in_i1]+off, in->ch[in_i2]+off, s->native_matrix, in->ch_count*out_i + in_i1, in->ch_count*out_i + in_i2, len-len1); 472 break;} 473 default: 474 if(s->int_sample_fmt == AV_SAMPLE_FMT_FLTP){ 475 for(i=0; i<len; i++){ 476 float v=0; 477 for(j=0; j<s->matrix_ch[out_i][0]; j++){ 478 in_i= s->matrix_ch[out_i][1+j]; 479 v+= ((float*)in->ch[in_i])[i] * s->matrix[out_i][in_i]; 480 } 481 ((float*)out->ch[out_i])[i]= v; 482 } 483 }else if(s->int_sample_fmt == AV_SAMPLE_FMT_DBLP){ 484 for(i=0; i<len; i++){ 485 double v=0; 486 for(j=0; j<s->matrix_ch[out_i][0]; j++){ 487 in_i= s->matrix_ch[out_i][1+j]; 488 v+= ((double*)in->ch[in_i])[i] * s->matrix[out_i][in_i]; 489 } 490 ((double*)out->ch[out_i])[i]= v; 491 } 492 }else{ 493 for(i=0; i<len; i++){ 494 int v=0; 495 for(j=0; j<s->matrix_ch[out_i][0]; j++){ 496 in_i= s->matrix_ch[out_i][1+j]; 497 v+= ((int16_t*)in->ch[in_i])[i] * s->matrix32[out_i][in_i]; 498 } 499 ((int16_t*)out->ch[out_i])[i]= (v + 16384)>>15; 500 } 501 } 502 } 503 } 504 return 0; 505} 506