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];
76 if (s->int_sample_fmt == AV_SAMPLE_FMT_FLTP)
77 for (in = 0; in < nb_in; in++)
78 s->matrix_flt[out][in] = matrix[in];
81 s->rematrix_custom = 1;
85 static int even(int64_t layout){
87 if(layout&(layout-1)) return 1;
91 static int clean_layout(SwrContext *s, int64_t layout){
92 if(layout && layout != AV_CH_FRONT_CENTER && !(layout&(layout-1))) {
94 av_get_channel_layout_string(buf, sizeof(buf), -1, layout);
95 av_log(s, AV_LOG_VERBOSE, "Treating %s as mono\n", buf);
96 return AV_CH_FRONT_CENTER;
102 static int sane_layout(int64_t layout){
103 if(!(layout & AV_CH_LAYOUT_SURROUND)) // at least 1 front speaker
105 if(!even(layout & (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT))) // no asymetric front
107 if(!even(layout & (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT))) // no asymetric side
109 if(!even(layout & (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT)))
111 if(!even(layout & (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER)))
113 if(av_get_channel_layout_nb_channels(layout) >= SWR_CH_MAX)
119 av_cold static int auto_matrix(SwrContext *s)
122 double matrix[NUM_NAMED_CHANNELS][NUM_NAMED_CHANNELS]={{0}};
123 int64_t unaccounted, in_ch_layout, out_ch_layout;
126 const int matrix_encoding = s->matrix_encoding;
129 in_ch_layout = clean_layout(s, s->in_ch_layout);
130 out_ch_layout = clean_layout(s, s->out_ch_layout);
132 if( out_ch_layout == AV_CH_LAYOUT_STEREO_DOWNMIX
133 && (in_ch_layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == 0
135 out_ch_layout = AV_CH_LAYOUT_STEREO;
137 if( in_ch_layout == AV_CH_LAYOUT_STEREO_DOWNMIX
138 && (out_ch_layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == 0
140 in_ch_layout = AV_CH_LAYOUT_STEREO;
142 if(!sane_layout(in_ch_layout)){
143 av_get_channel_layout_string(buf, sizeof(buf), -1, s->in_ch_layout);
144 av_log(s, AV_LOG_ERROR, "Input channel layout '%s' is not supported\n", buf);
145 return AVERROR(EINVAL);
148 if(!sane_layout(out_ch_layout)){
149 av_get_channel_layout_string(buf, sizeof(buf), -1, s->out_ch_layout);
150 av_log(s, AV_LOG_ERROR, "Output channel layout '%s' is not supported\n", buf);
151 return AVERROR(EINVAL);
154 memset(s->matrix, 0, sizeof(s->matrix));
155 for(i=0; i<FF_ARRAY_ELEMS(matrix); i++){
156 if(in_ch_layout & out_ch_layout & (1ULL<<i))
160 unaccounted= in_ch_layout & ~out_ch_layout;
162 //FIXME implement dolby surround
163 //FIXME implement full ac3
166 if(unaccounted & AV_CH_FRONT_CENTER){
167 if((out_ch_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO){
168 if(in_ch_layout & AV_CH_LAYOUT_STEREO) {
169 matrix[ FRONT_LEFT][FRONT_CENTER]+= s->clev;
170 matrix[FRONT_RIGHT][FRONT_CENTER]+= s->clev;
172 matrix[ FRONT_LEFT][FRONT_CENTER]+= M_SQRT1_2;
173 matrix[FRONT_RIGHT][FRONT_CENTER]+= M_SQRT1_2;
178 if(unaccounted & AV_CH_LAYOUT_STEREO){
179 if(out_ch_layout & AV_CH_FRONT_CENTER){
180 matrix[FRONT_CENTER][ FRONT_LEFT]+= M_SQRT1_2;
181 matrix[FRONT_CENTER][FRONT_RIGHT]+= M_SQRT1_2;
182 if(in_ch_layout & AV_CH_FRONT_CENTER)
183 matrix[FRONT_CENTER][ FRONT_CENTER] = s->clev*sqrt(2);
188 if(unaccounted & AV_CH_BACK_CENTER){
189 if(out_ch_layout & AV_CH_BACK_LEFT){
190 matrix[ BACK_LEFT][BACK_CENTER]+= M_SQRT1_2;
191 matrix[BACK_RIGHT][BACK_CENTER]+= M_SQRT1_2;
192 }else if(out_ch_layout & AV_CH_SIDE_LEFT){
193 matrix[ SIDE_LEFT][BACK_CENTER]+= M_SQRT1_2;
194 matrix[SIDE_RIGHT][BACK_CENTER]+= M_SQRT1_2;
195 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
196 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY ||
197 matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
198 if (unaccounted & (AV_CH_BACK_LEFT | AV_CH_SIDE_LEFT)) {
199 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev * M_SQRT1_2;
200 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev * M_SQRT1_2;
202 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev;
203 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev;
206 matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*M_SQRT1_2;
207 matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2;
209 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
210 matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2;
214 if(unaccounted & AV_CH_BACK_LEFT){
215 if(out_ch_layout & AV_CH_BACK_CENTER){
216 matrix[BACK_CENTER][ BACK_LEFT]+= M_SQRT1_2;
217 matrix[BACK_CENTER][BACK_RIGHT]+= M_SQRT1_2;
218 }else if(out_ch_layout & AV_CH_SIDE_LEFT){
219 if(in_ch_layout & AV_CH_SIDE_LEFT){
220 matrix[ SIDE_LEFT][ BACK_LEFT]+= M_SQRT1_2;
221 matrix[SIDE_RIGHT][BACK_RIGHT]+= M_SQRT1_2;
223 matrix[ SIDE_LEFT][ BACK_LEFT]+= 1.0;
224 matrix[SIDE_RIGHT][BACK_RIGHT]+= 1.0;
226 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
227 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
228 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * M_SQRT1_2;
229 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2;
230 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2;
231 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * M_SQRT1_2;
232 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
233 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * SQRT3_2;
234 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2;
235 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2;
236 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * SQRT3_2;
238 matrix[ FRONT_LEFT][ BACK_LEFT] += s->slev;
239 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev;
241 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
242 matrix[ FRONT_CENTER][BACK_LEFT ]+= s->slev*M_SQRT1_2;
243 matrix[ FRONT_CENTER][BACK_RIGHT]+= s->slev*M_SQRT1_2;
248 if(unaccounted & AV_CH_SIDE_LEFT){
249 if(out_ch_layout & AV_CH_BACK_LEFT){
250 /* if back channels do not exist in the input, just copy side
251 channels to back channels, otherwise mix side into back */
252 if (in_ch_layout & AV_CH_BACK_LEFT) {
253 matrix[BACK_LEFT ][SIDE_LEFT ] += M_SQRT1_2;
254 matrix[BACK_RIGHT][SIDE_RIGHT] += M_SQRT1_2;
256 matrix[BACK_LEFT ][SIDE_LEFT ] += 1.0;
257 matrix[BACK_RIGHT][SIDE_RIGHT] += 1.0;
259 }else if(out_ch_layout & AV_CH_BACK_CENTER){
260 matrix[BACK_CENTER][ SIDE_LEFT]+= M_SQRT1_2;
261 matrix[BACK_CENTER][SIDE_RIGHT]+= M_SQRT1_2;
262 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
263 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
264 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * M_SQRT1_2;
265 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2;
266 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2;
267 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * M_SQRT1_2;
268 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
269 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * SQRT3_2;
270 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2;
271 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2;
272 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * SQRT3_2;
274 matrix[ FRONT_LEFT][ SIDE_LEFT] += s->slev;
275 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev;
277 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
278 matrix[ FRONT_CENTER][SIDE_LEFT ]+= s->slev*M_SQRT1_2;
279 matrix[ FRONT_CENTER][SIDE_RIGHT]+= s->slev*M_SQRT1_2;
284 if(unaccounted & AV_CH_FRONT_LEFT_OF_CENTER){
285 if(out_ch_layout & AV_CH_FRONT_LEFT){
286 matrix[ FRONT_LEFT][ FRONT_LEFT_OF_CENTER]+= 1.0;
287 matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER]+= 1.0;
288 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
289 matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= M_SQRT1_2;
290 matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= M_SQRT1_2;
294 /* mix LFE into front left/right or center */
295 if (unaccounted & AV_CH_LOW_FREQUENCY) {
296 if (out_ch_layout & AV_CH_FRONT_CENTER) {
297 matrix[FRONT_CENTER][LOW_FREQUENCY] += s->lfe_mix_level;
298 } else if (out_ch_layout & AV_CH_FRONT_LEFT) {
299 matrix[FRONT_LEFT ][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2;
300 matrix[FRONT_RIGHT][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2;
305 for(out_i=i=0; i<64; i++){
308 if((out_ch_layout & (1ULL<<i)) == 0)
311 if((in_ch_layout & (1ULL<<j)) == 0)
313 if (i < FF_ARRAY_ELEMS(matrix) && j < FF_ARRAY_ELEMS(matrix[0]))
314 s->matrix[out_i][in_i]= matrix[i][j];
316 s->matrix[out_i][in_i]= i == j && (in_ch_layout & out_ch_layout & (1ULL<<i));
317 sum += fabs(s->matrix[out_i][in_i]);
320 maxcoef= FFMAX(maxcoef, sum);
323 if(s->rematrix_volume < 0)
324 maxcoef = -s->rematrix_volume;
326 if (s->rematrix_maxval > 0) {
327 maxval = s->rematrix_maxval;
328 } else if ( av_get_packed_sample_fmt(s->out_sample_fmt) < AV_SAMPLE_FMT_FLT
329 || av_get_packed_sample_fmt(s->int_sample_fmt) < AV_SAMPLE_FMT_FLT) {
334 if(maxcoef > maxval || s->rematrix_volume < 0){
336 for(i=0; i<SWR_CH_MAX; i++)
337 for(j=0; j<SWR_CH_MAX; j++){
338 s->matrix[i][j] /= maxcoef;
342 if(s->rematrix_volume > 0){
343 for(i=0; i<SWR_CH_MAX; i++)
344 for(j=0; j<SWR_CH_MAX; j++){
345 s->matrix[i][j] *= s->rematrix_volume;
349 av_log(s, AV_LOG_DEBUG, "Matrix coefficients:\n");
350 for(i=0; i<av_get_channel_layout_nb_channels(out_ch_layout); i++){
352 av_get_channel_name(av_channel_layout_extract_channel(out_ch_layout, i));
353 av_log(s, AV_LOG_DEBUG, "%s: ", c ? c : "?");
354 for(j=0; j<av_get_channel_layout_nb_channels(in_ch_layout); j++){
355 c = av_get_channel_name(av_channel_layout_extract_channel(in_ch_layout, j));
356 av_log(s, AV_LOG_DEBUG, "%s:%f ", c ? c : "?", s->matrix[i][j]);
358 av_log(s, AV_LOG_DEBUG, "\n");
360 if (s->int_sample_fmt == AV_SAMPLE_FMT_FLTP) {
362 for (i = 0; i < FF_ARRAY_ELEMS(s->matrix[0])*FF_ARRAY_ELEMS(s->matrix[0]); i++)
363 s->matrix_flt[0][i] = s->matrix[0][i];
369 av_cold int swri_rematrix_init(SwrContext *s){
371 int nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout);
372 int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout);
376 if (!s->rematrix_custom) {
377 int r = auto_matrix(s);
381 if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
383 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int));
384 s->native_one = av_mallocz(sizeof(int));
385 if (!s->native_matrix || !s->native_one)
386 return AVERROR(ENOMEM);
387 for (i = 0; i < nb_out; i++) {
391 for (j = 0; j < nb_in; j++) {
392 double target = s->matrix[i][j] * 32768 + rem;
393 ((int*)s->native_matrix)[i * nb_in + j] = lrintf(target);
394 rem += target - ((int*)s->native_matrix)[i * nb_in + j];
395 sum += FFABS(((int*)s->native_matrix)[i * nb_in + j]);
397 maxsum = FFMAX(maxsum, sum);
399 *((int*)s->native_one) = 32768;
400 if (maxsum <= 32768) {
401 s->mix_1_1_f = (mix_1_1_func_type*)copy_s16;
402 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s16;
403 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s16(s);
405 s->mix_1_1_f = (mix_1_1_func_type*)copy_clip_s16;
406 s->mix_2_1_f = (mix_2_1_func_type*)sum2_clip_s16;
407 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_clip_s16(s);
409 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){
410 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(float));
411 s->native_one = av_mallocz(sizeof(float));
412 if (!s->native_matrix || !s->native_one)
413 return AVERROR(ENOMEM);
414 for (i = 0; i < nb_out; i++)
415 for (j = 0; j < nb_in; j++)
416 ((float*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
417 *((float*)s->native_one) = 1.0;
418 s->mix_1_1_f = (mix_1_1_func_type*)copy_float;
419 s->mix_2_1_f = (mix_2_1_func_type*)sum2_float;
420 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_float(s);
421 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){
422 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
423 s->native_one = av_mallocz(sizeof(double));
424 if (!s->native_matrix || !s->native_one)
425 return AVERROR(ENOMEM);
426 for (i = 0; i < nb_out; i++)
427 for (j = 0; j < nb_in; j++)
428 ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
429 *((double*)s->native_one) = 1.0;
430 s->mix_1_1_f = (mix_1_1_func_type*)copy_double;
431 s->mix_2_1_f = (mix_2_1_func_type*)sum2_double;
432 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_double(s);
433 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_S32P){
434 // Only for dithering currently
435 // s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
436 s->native_one = av_mallocz(sizeof(int));
438 return AVERROR(ENOMEM);
439 // for (i = 0; i < nb_out; i++)
440 // for (j = 0; j < nb_in; j++)
441 // ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
442 *((int*)s->native_one) = 32768;
443 s->mix_1_1_f = (mix_1_1_func_type*)copy_s32;
444 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s32;
445 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s32(s);
448 //FIXME quantize for integeres
449 for (i = 0; i < SWR_CH_MAX; i++) {
451 for (j = 0; j < SWR_CH_MAX; j++) {
452 s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
454 s->matrix_ch[i][++ch_in]= j;
456 s->matrix_ch[i][0]= ch_in;
459 if(HAVE_YASM && HAVE_MMX)
460 return swri_rematrix_init_x86(s);
465 av_cold void swri_rematrix_free(SwrContext *s){
466 av_freep(&s->native_matrix);
467 av_freep(&s->native_one);
468 av_freep(&s->native_simd_matrix);
469 av_freep(&s->native_simd_one);
472 int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy){
473 int out_i, in_i, i, j;
478 s->mix_any_f(out->ch, (const uint8_t **)in->ch, s->native_matrix, len);
482 if(s->mix_2_1_simd || s->mix_1_1_simd){
484 off = len1 * out->bps;
487 av_assert0(!s->out_ch_layout || out->ch_count == av_get_channel_layout_nb_channels(s->out_ch_layout));
488 av_assert0(!s-> in_ch_layout || in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout));
490 for(out_i=0; out_i<out->ch_count; out_i++){
491 switch(s->matrix_ch[out_i][0]){
494 memset(out->ch[out_i], 0, len * av_get_bytes_per_sample(s->int_sample_fmt));
497 in_i= s->matrix_ch[out_i][1];
498 if(s->matrix[out_i][in_i]!=1.0){
499 if(s->mix_1_1_simd && len1)
500 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);
502 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);
504 memcpy(out->ch[out_i], in->ch[in_i], len*out->bps);
506 out->ch[out_i]= in->ch[in_i];
510 int in_i1 = s->matrix_ch[out_i][1];
511 int in_i2 = s->matrix_ch[out_i][2];
512 if(s->mix_2_1_simd && len1)
513 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);
515 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);
517 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);
520 if(s->int_sample_fmt == AV_SAMPLE_FMT_FLTP){
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+= ((float*)in->ch[in_i])[i] * s->matrix_flt[out_i][in_i];
527 ((float*)out->ch[out_i])[i]= v;
529 }else if(s->int_sample_fmt == AV_SAMPLE_FMT_DBLP){
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+= ((double*)in->ch[in_i])[i] * s->matrix[out_i][in_i];
536 ((double*)out->ch[out_i])[i]= v;
539 for(i=0; i<len; i++){
541 for(j=0; j<s->matrix_ch[out_i][0]; j++){
542 in_i= s->matrix_ch[out_i][1+j];
543 v+= ((int16_t*)in->ch[in_i])[i] * s->matrix32[out_i][in_i];
545 ((int16_t*)out->ch[out_i])[i]= (v + 16384)>>15;