2 * Copyright (C) 2011-2012 Michael Niedermayer (michaelni@gmx.at)
4 * This file is part of libswresample
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.
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.
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
21 #include "swresample_internal.h"
22 #include "libavutil/avassert.h"
23 #include "libavutil/channel_layout.h"
25 #define TEMPLATE_REMATRIX_FLT
26 #include "rematrix_template.c"
27 #undef TEMPLATE_REMATRIX_FLT
29 #define TEMPLATE_REMATRIX_DBL
30 #include "rematrix_template.c"
31 #undef TEMPLATE_REMATRIX_DBL
33 #define TEMPLATE_REMATRIX_S16
34 #include "rematrix_template.c"
36 #include "rematrix_template.c"
38 #undef TEMPLATE_REMATRIX_S16
40 #define TEMPLATE_REMATRIX_S32
41 #include "rematrix_template.c"
42 #undef TEMPLATE_REMATRIX_S32
46 #define FRONT_CENTER 2
47 #define LOW_FREQUENCY 3
50 #define FRONT_LEFT_OF_CENTER 6
51 #define FRONT_RIGHT_OF_CENTER 7
56 #define TOP_FRONT_LEFT 12
57 #define TOP_FRONT_CENTER 13
58 #define TOP_FRONT_RIGHT 14
59 #define TOP_BACK_LEFT 15
60 #define TOP_BACK_CENTER 16
61 #define TOP_BACK_RIGHT 17
62 #define NUM_NAMED_CHANNELS 18
64 int swr_set_matrix(struct SwrContext *s, const double *matrix, int stride)
66 int nb_in, nb_out, in, out;
68 if (!s || s->in_convert) // s needs to be allocated but not initialized
69 return AVERROR(EINVAL);
70 memset(s->matrix, 0, sizeof(s->matrix));
71 nb_in = av_get_channel_layout_nb_channels(s->user_in_ch_layout);
72 nb_out = av_get_channel_layout_nb_channels(s->user_out_ch_layout);
73 for (out = 0; out < nb_out; out++) {
74 for (in = 0; in < nb_in; in++)
75 s->matrix[out][in] = matrix[in];
78 s->rematrix_custom = 1;
82 static int even(int64_t layout){
84 if(layout&(layout-1)) return 1;
88 static int clean_layout(SwrContext *s, int64_t layout){
89 if(layout && layout != AV_CH_FRONT_CENTER && !(layout&(layout-1))) {
91 av_get_channel_layout_string(buf, sizeof(buf), -1, layout);
92 av_log(s, AV_LOG_VERBOSE, "Treating %s as mono\n", buf);
93 return AV_CH_FRONT_CENTER;
99 static int sane_layout(int64_t layout){
100 if(!(layout & AV_CH_LAYOUT_SURROUND)) // at least 1 front speaker
102 if(!even(layout & (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT))) // no asymetric front
104 if(!even(layout & (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT))) // no asymetric side
106 if(!even(layout & (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT)))
108 if(!even(layout & (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER)))
110 if(av_get_channel_layout_nb_channels(layout) >= SWR_CH_MAX)
116 av_cold static int auto_matrix(SwrContext *s)
119 double matrix[NUM_NAMED_CHANNELS][NUM_NAMED_CHANNELS]={{0}};
120 int64_t unaccounted, in_ch_layout, out_ch_layout;
123 const int matrix_encoding = s->matrix_encoding;
126 in_ch_layout = clean_layout(s, s->in_ch_layout);
127 out_ch_layout = clean_layout(s, s->out_ch_layout);
129 if( out_ch_layout == AV_CH_LAYOUT_STEREO_DOWNMIX
130 && (in_ch_layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == 0
132 out_ch_layout = AV_CH_LAYOUT_STEREO;
134 if( in_ch_layout == AV_CH_LAYOUT_STEREO_DOWNMIX
135 && (out_ch_layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == 0
137 in_ch_layout = AV_CH_LAYOUT_STEREO;
139 if(!sane_layout(in_ch_layout)){
140 av_get_channel_layout_string(buf, sizeof(buf), -1, s->in_ch_layout);
141 av_log(s, AV_LOG_ERROR, "Input channel layout '%s' is not supported\n", buf);
142 return AVERROR(EINVAL);
145 if(!sane_layout(out_ch_layout)){
146 av_get_channel_layout_string(buf, sizeof(buf), -1, s->out_ch_layout);
147 av_log(s, AV_LOG_ERROR, "Output channel layout '%s' is not supported\n", buf);
148 return AVERROR(EINVAL);
151 memset(s->matrix, 0, sizeof(s->matrix));
152 for(i=0; i<FF_ARRAY_ELEMS(matrix); i++){
153 if(in_ch_layout & out_ch_layout & (1ULL<<i))
157 unaccounted= in_ch_layout & ~out_ch_layout;
159 //FIXME implement dolby surround
160 //FIXME implement full ac3
163 if(unaccounted & AV_CH_FRONT_CENTER){
164 if((out_ch_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO){
165 if(in_ch_layout & AV_CH_LAYOUT_STEREO) {
166 matrix[ FRONT_LEFT][FRONT_CENTER]+= s->clev;
167 matrix[FRONT_RIGHT][FRONT_CENTER]+= s->clev;
169 matrix[ FRONT_LEFT][FRONT_CENTER]+= M_SQRT1_2;
170 matrix[FRONT_RIGHT][FRONT_CENTER]+= M_SQRT1_2;
175 if(unaccounted & AV_CH_LAYOUT_STEREO){
176 if(out_ch_layout & AV_CH_FRONT_CENTER){
177 matrix[FRONT_CENTER][ FRONT_LEFT]+= M_SQRT1_2;
178 matrix[FRONT_CENTER][FRONT_RIGHT]+= M_SQRT1_2;
179 if(in_ch_layout & AV_CH_FRONT_CENTER)
180 matrix[FRONT_CENTER][ FRONT_CENTER] = s->clev*sqrt(2);
185 if(unaccounted & AV_CH_BACK_CENTER){
186 if(out_ch_layout & AV_CH_BACK_LEFT){
187 matrix[ BACK_LEFT][BACK_CENTER]+= M_SQRT1_2;
188 matrix[BACK_RIGHT][BACK_CENTER]+= M_SQRT1_2;
189 }else if(out_ch_layout & AV_CH_SIDE_LEFT){
190 matrix[ SIDE_LEFT][BACK_CENTER]+= M_SQRT1_2;
191 matrix[SIDE_RIGHT][BACK_CENTER]+= M_SQRT1_2;
192 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
193 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY ||
194 matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
195 if (unaccounted & (AV_CH_BACK_LEFT | AV_CH_SIDE_LEFT)) {
196 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev * M_SQRT1_2;
197 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev * M_SQRT1_2;
199 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev;
200 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev;
203 matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*M_SQRT1_2;
204 matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2;
206 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
207 matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2;
211 if(unaccounted & AV_CH_BACK_LEFT){
212 if(out_ch_layout & AV_CH_BACK_CENTER){
213 matrix[BACK_CENTER][ BACK_LEFT]+= M_SQRT1_2;
214 matrix[BACK_CENTER][BACK_RIGHT]+= M_SQRT1_2;
215 }else if(out_ch_layout & AV_CH_SIDE_LEFT){
216 if(in_ch_layout & AV_CH_SIDE_LEFT){
217 matrix[ SIDE_LEFT][ BACK_LEFT]+= M_SQRT1_2;
218 matrix[SIDE_RIGHT][BACK_RIGHT]+= M_SQRT1_2;
220 matrix[ SIDE_LEFT][ BACK_LEFT]+= 1.0;
221 matrix[SIDE_RIGHT][BACK_RIGHT]+= 1.0;
223 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
224 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
225 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * M_SQRT1_2;
226 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2;
227 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2;
228 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * M_SQRT1_2;
229 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
230 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * SQRT3_2;
231 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2;
232 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2;
233 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * SQRT3_2;
235 matrix[ FRONT_LEFT][ BACK_LEFT] += s->slev;
236 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev;
238 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
239 matrix[ FRONT_CENTER][BACK_LEFT ]+= s->slev*M_SQRT1_2;
240 matrix[ FRONT_CENTER][BACK_RIGHT]+= s->slev*M_SQRT1_2;
245 if(unaccounted & AV_CH_SIDE_LEFT){
246 if(out_ch_layout & AV_CH_BACK_LEFT){
247 /* if back channels do not exist in the input, just copy side
248 channels to back channels, otherwise mix side into back */
249 if (in_ch_layout & AV_CH_BACK_LEFT) {
250 matrix[BACK_LEFT ][SIDE_LEFT ] += M_SQRT1_2;
251 matrix[BACK_RIGHT][SIDE_RIGHT] += M_SQRT1_2;
253 matrix[BACK_LEFT ][SIDE_LEFT ] += 1.0;
254 matrix[BACK_RIGHT][SIDE_RIGHT] += 1.0;
256 }else if(out_ch_layout & AV_CH_BACK_CENTER){
257 matrix[BACK_CENTER][ SIDE_LEFT]+= M_SQRT1_2;
258 matrix[BACK_CENTER][SIDE_RIGHT]+= M_SQRT1_2;
259 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
260 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
261 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * M_SQRT1_2;
262 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2;
263 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2;
264 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * M_SQRT1_2;
265 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
266 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * SQRT3_2;
267 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2;
268 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2;
269 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * SQRT3_2;
271 matrix[ FRONT_LEFT][ SIDE_LEFT] += s->slev;
272 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev;
274 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
275 matrix[ FRONT_CENTER][SIDE_LEFT ]+= s->slev*M_SQRT1_2;
276 matrix[ FRONT_CENTER][SIDE_RIGHT]+= s->slev*M_SQRT1_2;
281 if(unaccounted & AV_CH_FRONT_LEFT_OF_CENTER){
282 if(out_ch_layout & AV_CH_FRONT_LEFT){
283 matrix[ FRONT_LEFT][ FRONT_LEFT_OF_CENTER]+= 1.0;
284 matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER]+= 1.0;
285 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
286 matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= M_SQRT1_2;
287 matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= M_SQRT1_2;
291 /* mix LFE into front left/right or center */
292 if (unaccounted & AV_CH_LOW_FREQUENCY) {
293 if (out_ch_layout & AV_CH_FRONT_CENTER) {
294 matrix[FRONT_CENTER][LOW_FREQUENCY] += s->lfe_mix_level;
295 } else if (out_ch_layout & AV_CH_FRONT_LEFT) {
296 matrix[FRONT_LEFT ][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2;
297 matrix[FRONT_RIGHT][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2;
302 for(out_i=i=0; i<64; i++){
305 if((out_ch_layout & (1ULL<<i)) == 0)
308 if((in_ch_layout & (1ULL<<j)) == 0)
310 if (i < FF_ARRAY_ELEMS(matrix) && j < FF_ARRAY_ELEMS(matrix[0]))
311 s->matrix[out_i][in_i]= matrix[i][j];
313 s->matrix[out_i][in_i]= i == j && (in_ch_layout & out_ch_layout & (1ULL<<i));
314 sum += fabs(s->matrix[out_i][in_i]);
317 maxcoef= FFMAX(maxcoef, sum);
320 if(s->rematrix_volume < 0)
321 maxcoef = -s->rematrix_volume;
323 if (s->rematrix_maxval > 0) {
324 maxval = s->rematrix_maxval;
325 } else if ( av_get_packed_sample_fmt(s->out_sample_fmt) < AV_SAMPLE_FMT_FLT
326 || av_get_packed_sample_fmt(s->int_sample_fmt) < AV_SAMPLE_FMT_FLT) {
331 if(maxcoef > maxval || 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] /= maxcoef;
339 if(s->rematrix_volume > 0){
340 for(i=0; i<SWR_CH_MAX; i++)
341 for(j=0; j<SWR_CH_MAX; j++){
342 s->matrix[i][j] *= s->rematrix_volume;
346 av_log(s, AV_LOG_DEBUG, "Matrix coefficients:\n");
347 for(i=0; i<av_get_channel_layout_nb_channels(out_ch_layout); i++){
349 av_get_channel_name(av_channel_layout_extract_channel(out_ch_layout, i));
350 av_log(s, AV_LOG_DEBUG, "%s: ", c ? c : "?");
351 for(j=0; j<av_get_channel_layout_nb_channels(in_ch_layout); j++){
352 c = av_get_channel_name(av_channel_layout_extract_channel(in_ch_layout, j));
353 av_log(s, AV_LOG_DEBUG, "%s:%f ", c ? c : "?", s->matrix[i][j]);
355 av_log(s, AV_LOG_DEBUG, "\n");
360 av_cold int swri_rematrix_init(SwrContext *s){
362 int nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout);
363 int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout);
367 if (!s->rematrix_custom) {
368 int r = auto_matrix(s);
372 if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
374 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int));
375 s->native_one = av_mallocz(sizeof(int));
376 if (!s->native_matrix || !s->native_one)
377 return AVERROR(ENOMEM);
378 for (i = 0; i < nb_out; i++) {
382 for (j = 0; j < nb_in; j++) {
383 double target = s->matrix[i][j] * 32768 + rem;
384 ((int*)s->native_matrix)[i * nb_in + j] = lrintf(target);
385 rem += target - ((int*)s->native_matrix)[i * nb_in + j];
386 sum += FFABS(((int*)s->native_matrix)[i * nb_in + j]);
388 maxsum = FFMAX(maxsum, sum);
390 *((int*)s->native_one) = 32768;
391 if (maxsum <= 32768) {
392 s->mix_1_1_f = (mix_1_1_func_type*)copy_s16;
393 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s16;
394 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s16(s);
396 s->mix_1_1_f = (mix_1_1_func_type*)copy_clip_s16;
397 s->mix_2_1_f = (mix_2_1_func_type*)sum2_clip_s16;
398 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_clip_s16(s);
400 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){
401 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(float));
402 s->native_one = av_mallocz(sizeof(float));
403 if (!s->native_matrix || !s->native_one)
404 return AVERROR(ENOMEM);
405 for (i = 0; i < nb_out; i++)
406 for (j = 0; j < nb_in; j++)
407 ((float*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
408 *((float*)s->native_one) = 1.0;
409 s->mix_1_1_f = (mix_1_1_func_type*)copy_float;
410 s->mix_2_1_f = (mix_2_1_func_type*)sum2_float;
411 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_float(s);
412 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){
413 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
414 s->native_one = av_mallocz(sizeof(double));
415 if (!s->native_matrix || !s->native_one)
416 return AVERROR(ENOMEM);
417 for (i = 0; i < nb_out; i++)
418 for (j = 0; j < nb_in; j++)
419 ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
420 *((double*)s->native_one) = 1.0;
421 s->mix_1_1_f = (mix_1_1_func_type*)copy_double;
422 s->mix_2_1_f = (mix_2_1_func_type*)sum2_double;
423 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_double(s);
424 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_S32P){
425 // Only for dithering currently
426 // s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
427 s->native_one = av_mallocz(sizeof(int));
429 return AVERROR(ENOMEM);
430 // for (i = 0; i < nb_out; i++)
431 // for (j = 0; j < nb_in; j++)
432 // ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
433 *((int*)s->native_one) = 32768;
434 s->mix_1_1_f = (mix_1_1_func_type*)copy_s32;
435 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s32;
436 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s32(s);
439 //FIXME quantize for integeres
440 for (i = 0; i < SWR_CH_MAX; i++) {
442 for (j = 0; j < SWR_CH_MAX; j++) {
443 s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
445 s->matrix_ch[i][++ch_in]= j;
447 s->matrix_ch[i][0]= ch_in;
450 if(HAVE_YASM && HAVE_MMX)
451 return swri_rematrix_init_x86(s);
456 av_cold void swri_rematrix_free(SwrContext *s){
457 av_freep(&s->native_matrix);
458 av_freep(&s->native_one);
459 av_freep(&s->native_simd_matrix);
460 av_freep(&s->native_simd_one);
463 int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy){
464 int out_i, in_i, i, j;
469 s->mix_any_f(out->ch, (const uint8_t **)in->ch, s->native_matrix, len);
473 if(s->mix_2_1_simd || s->mix_1_1_simd){
475 off = len1 * out->bps;
478 av_assert0(!s->out_ch_layout || out->ch_count == av_get_channel_layout_nb_channels(s->out_ch_layout));
479 av_assert0(!s-> in_ch_layout || in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout));
481 for(out_i=0; out_i<out->ch_count; out_i++){
482 switch(s->matrix_ch[out_i][0]){
485 memset(out->ch[out_i], 0, len * av_get_bytes_per_sample(s->int_sample_fmt));
488 in_i= s->matrix_ch[out_i][1];
489 if(s->matrix[out_i][in_i]!=1.0){
490 if(s->mix_1_1_simd && len1)
491 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);
493 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);
495 memcpy(out->ch[out_i], in->ch[in_i], len*out->bps);
497 out->ch[out_i]= in->ch[in_i];
501 int in_i1 = s->matrix_ch[out_i][1];
502 int in_i2 = s->matrix_ch[out_i][2];
503 if(s->mix_2_1_simd && len1)
504 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);
506 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);
508 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);
511 if(s->int_sample_fmt == AV_SAMPLE_FMT_FLTP){
512 for(i=0; i<len; i++){
514 for(j=0; j<s->matrix_ch[out_i][0]; j++){
515 in_i= s->matrix_ch[out_i][1+j];
516 v+= ((float*)in->ch[in_i])[i] * s->matrix[out_i][in_i];
518 ((float*)out->ch[out_i])[i]= v;
520 }else if(s->int_sample_fmt == AV_SAMPLE_FMT_DBLP){
521 for(i=0; i<len; i++){
523 for(j=0; j<s->matrix_ch[out_i][0]; j++){
524 in_i= s->matrix_ch[out_i][1+j];
525 v+= ((double*)in->ch[in_i])[i] * s->matrix[out_i][in_i];
527 ((double*)out->ch[out_i])[i]= v;
530 for(i=0; i<len; i++){
532 for(j=0; j<s->matrix_ch[out_i][0]; j++){
533 in_i= s->matrix_ch[out_i][1+j];
534 v+= ((int16_t*)in->ch[in_i])[i] * s->matrix32[out_i][in_i];
536 ((int16_t*)out->ch[out_i])[i]= (v + 16384)>>15;