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"
35 #undef TEMPLATE_REMATRIX_S16
37 #define TEMPLATE_REMATRIX_S32
38 #include "rematrix_template.c"
39 #undef TEMPLATE_REMATRIX_S32
43 #define FRONT_CENTER 2
44 #define LOW_FREQUENCY 3
47 #define FRONT_LEFT_OF_CENTER 6
48 #define FRONT_RIGHT_OF_CENTER 7
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
60 int swr_set_matrix(struct SwrContext *s, const double *matrix, int stride)
62 int nb_in, nb_out, in, out;
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];
74 s->rematrix_custom = 1;
78 static int even(int64_t layout){
80 if(layout&(layout-1)) return 1;
84 static int clean_layout(SwrContext *s, int64_t layout){
85 if((layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == AV_CH_LAYOUT_STEREO_DOWNMIX)
86 return AV_CH_LAYOUT_STEREO;
88 if(layout && layout != AV_CH_FRONT_CENTER && !(layout&(layout-1))) {
90 av_get_channel_layout_string(buf, sizeof(buf), -1, layout);
91 av_log(s, AV_LOG_VERBOSE, "Treating %s as mono\n", buf);
92 return AV_CH_FRONT_CENTER;
98 static int sane_layout(int64_t layout){
99 if(!(layout & AV_CH_LAYOUT_SURROUND)) // at least 1 front speaker
101 if(!even(layout & (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT))) // no asymetric front
103 if(!even(layout & (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT))) // no asymetric side
105 if(!even(layout & (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT)))
107 if(!even(layout & (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER)))
109 if(av_get_channel_layout_nb_channels(layout) >= SWR_CH_MAX)
115 av_cold static int auto_matrix(SwrContext *s)
118 double matrix[64][64]={{0}};
119 int64_t unaccounted, in_ch_layout, out_ch_layout;
122 const int matrix_encoding = s->matrix_encoding;
125 in_ch_layout = clean_layout(s, s->in_ch_layout);
126 if(!sane_layout(in_ch_layout)){
127 av_get_channel_layout_string(buf, sizeof(buf), -1, s->in_ch_layout);
128 av_log(s, AV_LOG_ERROR, "Input channel layout '%s' is not supported\n", buf);
129 return AVERROR(EINVAL);
132 out_ch_layout = clean_layout(s, s->out_ch_layout);
133 if(!sane_layout(out_ch_layout)){
134 av_get_channel_layout_string(buf, sizeof(buf), -1, s->out_ch_layout);
135 av_log(s, AV_LOG_ERROR, "Output channel layout '%s' is not supported\n", buf);
136 return AVERROR(EINVAL);
139 memset(s->matrix, 0, sizeof(s->matrix));
141 if(in_ch_layout & out_ch_layout & (1ULL<<i))
145 unaccounted= in_ch_layout & ~out_ch_layout;
147 //FIXME implement dolby surround
148 //FIXME implement full ac3
151 if(unaccounted & AV_CH_FRONT_CENTER){
152 if((out_ch_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO){
153 if(in_ch_layout & AV_CH_LAYOUT_STEREO) {
154 matrix[ FRONT_LEFT][FRONT_CENTER]+= s->clev;
155 matrix[FRONT_RIGHT][FRONT_CENTER]+= s->clev;
157 matrix[ FRONT_LEFT][FRONT_CENTER]+= M_SQRT1_2;
158 matrix[FRONT_RIGHT][FRONT_CENTER]+= M_SQRT1_2;
163 if(unaccounted & AV_CH_LAYOUT_STEREO){
164 if(out_ch_layout & AV_CH_FRONT_CENTER){
165 matrix[FRONT_CENTER][ FRONT_LEFT]+= M_SQRT1_2;
166 matrix[FRONT_CENTER][FRONT_RIGHT]+= M_SQRT1_2;
167 if(in_ch_layout & AV_CH_FRONT_CENTER)
168 matrix[FRONT_CENTER][ FRONT_CENTER] = s->clev*sqrt(2);
173 if(unaccounted & AV_CH_BACK_CENTER){
174 if(out_ch_layout & AV_CH_BACK_LEFT){
175 matrix[ BACK_LEFT][BACK_CENTER]+= M_SQRT1_2;
176 matrix[BACK_RIGHT][BACK_CENTER]+= M_SQRT1_2;
177 }else if(out_ch_layout & AV_CH_SIDE_LEFT){
178 matrix[ SIDE_LEFT][BACK_CENTER]+= M_SQRT1_2;
179 matrix[SIDE_RIGHT][BACK_CENTER]+= M_SQRT1_2;
180 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
181 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY ||
182 matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
183 if (unaccounted & (AV_CH_BACK_LEFT | AV_CH_SIDE_LEFT)) {
184 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev * M_SQRT1_2;
185 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev * M_SQRT1_2;
187 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev;
188 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev;
191 matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*M_SQRT1_2;
192 matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2;
194 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
195 matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2;
199 if(unaccounted & AV_CH_BACK_LEFT){
200 if(out_ch_layout & AV_CH_BACK_CENTER){
201 matrix[BACK_CENTER][ BACK_LEFT]+= M_SQRT1_2;
202 matrix[BACK_CENTER][BACK_RIGHT]+= M_SQRT1_2;
203 }else if(out_ch_layout & AV_CH_SIDE_LEFT){
204 if(in_ch_layout & AV_CH_SIDE_LEFT){
205 matrix[ SIDE_LEFT][ BACK_LEFT]+= M_SQRT1_2;
206 matrix[SIDE_RIGHT][BACK_RIGHT]+= M_SQRT1_2;
208 matrix[ SIDE_LEFT][ BACK_LEFT]+= 1.0;
209 matrix[SIDE_RIGHT][BACK_RIGHT]+= 1.0;
211 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
212 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
213 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * M_SQRT1_2;
214 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2;
215 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2;
216 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * M_SQRT1_2;
217 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
218 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * SQRT3_2;
219 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2;
220 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2;
221 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * SQRT3_2;
223 matrix[ FRONT_LEFT][ BACK_LEFT] += s->slev;
224 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev;
226 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
227 matrix[ FRONT_CENTER][BACK_LEFT ]+= s->slev*M_SQRT1_2;
228 matrix[ FRONT_CENTER][BACK_RIGHT]+= s->slev*M_SQRT1_2;
233 if(unaccounted & AV_CH_SIDE_LEFT){
234 if(out_ch_layout & AV_CH_BACK_LEFT){
235 /* if back channels do not exist in the input, just copy side
236 channels to back channels, otherwise mix side into back */
237 if (in_ch_layout & AV_CH_BACK_LEFT) {
238 matrix[BACK_LEFT ][SIDE_LEFT ] += M_SQRT1_2;
239 matrix[BACK_RIGHT][SIDE_RIGHT] += M_SQRT1_2;
241 matrix[BACK_LEFT ][SIDE_LEFT ] += 1.0;
242 matrix[BACK_RIGHT][SIDE_RIGHT] += 1.0;
244 }else if(out_ch_layout & AV_CH_BACK_CENTER){
245 matrix[BACK_CENTER][ SIDE_LEFT]+= M_SQRT1_2;
246 matrix[BACK_CENTER][SIDE_RIGHT]+= M_SQRT1_2;
247 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
248 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
249 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * M_SQRT1_2;
250 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2;
251 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2;
252 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * M_SQRT1_2;
253 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
254 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * SQRT3_2;
255 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2;
256 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2;
257 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * SQRT3_2;
259 matrix[ FRONT_LEFT][ SIDE_LEFT] += s->slev;
260 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev;
262 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
263 matrix[ FRONT_CENTER][SIDE_LEFT ]+= s->slev*M_SQRT1_2;
264 matrix[ FRONT_CENTER][SIDE_RIGHT]+= s->slev*M_SQRT1_2;
269 if(unaccounted & AV_CH_FRONT_LEFT_OF_CENTER){
270 if(out_ch_layout & AV_CH_FRONT_LEFT){
271 matrix[ FRONT_LEFT][ FRONT_LEFT_OF_CENTER]+= 1.0;
272 matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER]+= 1.0;
273 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
274 matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= M_SQRT1_2;
275 matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= M_SQRT1_2;
279 /* mix LFE into front left/right or center */
280 if (unaccounted & AV_CH_LOW_FREQUENCY) {
281 if (out_ch_layout & AV_CH_FRONT_CENTER) {
282 matrix[FRONT_CENTER][LOW_FREQUENCY] += s->lfe_mix_level;
283 } else if (out_ch_layout & AV_CH_FRONT_LEFT) {
284 matrix[FRONT_LEFT ][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2;
285 matrix[FRONT_RIGHT][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2;
290 for(out_i=i=0; i<64; i++){
294 s->matrix[out_i][in_i]= matrix[i][j];
296 sum += fabs(matrix[i][j]);
298 if(in_ch_layout & (1ULL<<j))
301 maxcoef= FFMAX(maxcoef, sum);
302 if(out_ch_layout & (1ULL<<i))
305 if(s->rematrix_volume < 0)
306 maxcoef = -s->rematrix_volume;
308 if (s->rematrix_maxval > 0) {
309 maxval = s->rematrix_maxval;
310 } else if ( av_get_packed_sample_fmt(s->out_sample_fmt) < AV_SAMPLE_FMT_FLT
311 || av_get_packed_sample_fmt(s->int_sample_fmt) < AV_SAMPLE_FMT_FLT) {
316 if(maxcoef > maxval || s->rematrix_volume < 0){
318 for(i=0; i<SWR_CH_MAX; i++)
319 for(j=0; j<SWR_CH_MAX; j++){
320 s->matrix[i][j] /= maxcoef;
324 if(s->rematrix_volume > 0){
325 for(i=0; i<SWR_CH_MAX; i++)
326 for(j=0; j<SWR_CH_MAX; j++){
327 s->matrix[i][j] *= s->rematrix_volume;
331 for(i=0; i<av_get_channel_layout_nb_channels(out_ch_layout); i++){
332 for(j=0; j<av_get_channel_layout_nb_channels(in_ch_layout); j++){
333 av_log(NULL, AV_LOG_DEBUG, "%f ", s->matrix[i][j]);
335 av_log(NULL, AV_LOG_DEBUG, "\n");
340 av_cold int swri_rematrix_init(SwrContext *s){
342 int nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout);
343 int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout);
347 if (!s->rematrix_custom) {
348 int r = auto_matrix(s);
352 if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
353 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int));
354 s->native_one = av_mallocz(sizeof(int));
355 for (i = 0; i < nb_out; i++)
356 for (j = 0; j < nb_in; j++)
357 ((int*)s->native_matrix)[i * nb_in + j] = lrintf(s->matrix[i][j] * 32768);
358 *((int*)s->native_one) = 32768;
359 s->mix_1_1_f = (mix_1_1_func_type*)copy_s16;
360 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s16;
361 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s16(s);
362 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){
363 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(float));
364 s->native_one = av_mallocz(sizeof(float));
365 for (i = 0; i < nb_out; i++)
366 for (j = 0; j < nb_in; j++)
367 ((float*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
368 *((float*)s->native_one) = 1.0;
369 s->mix_1_1_f = (mix_1_1_func_type*)copy_float;
370 s->mix_2_1_f = (mix_2_1_func_type*)sum2_float;
371 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_float(s);
372 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){
373 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
374 s->native_one = av_mallocz(sizeof(double));
375 for (i = 0; i < nb_out; i++)
376 for (j = 0; j < nb_in; j++)
377 ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
378 *((double*)s->native_one) = 1.0;
379 s->mix_1_1_f = (mix_1_1_func_type*)copy_double;
380 s->mix_2_1_f = (mix_2_1_func_type*)sum2_double;
381 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_double(s);
382 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_S32P){
383 // Only for dithering currently
384 // s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
385 s->native_one = av_mallocz(sizeof(int));
386 // for (i = 0; i < nb_out; i++)
387 // for (j = 0; j < nb_in; j++)
388 // ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
389 *((int*)s->native_one) = 32768;
390 s->mix_1_1_f = (mix_1_1_func_type*)copy_s32;
391 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s32;
392 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s32(s);
395 //FIXME quantize for integeres
396 for (i = 0; i < SWR_CH_MAX; i++) {
398 for (j = 0; j < SWR_CH_MAX; j++) {
399 s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
401 s->matrix_ch[i][++ch_in]= j;
403 s->matrix_ch[i][0]= ch_in;
406 if(HAVE_YASM && HAVE_MMX) swri_rematrix_init_x86(s);
411 av_cold void swri_rematrix_free(SwrContext *s){
412 av_freep(&s->native_matrix);
413 av_freep(&s->native_one);
414 av_freep(&s->native_simd_matrix);
415 av_freep(&s->native_simd_one);
418 int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy){
419 int out_i, in_i, i, j;
424 s->mix_any_f(out->ch, (const uint8_t **)in->ch, s->native_matrix, len);
428 if(s->mix_2_1_simd || s->mix_1_1_simd){
430 off = len1 * out->bps;
433 av_assert0(out->ch_count == av_get_channel_layout_nb_channels(s->out_ch_layout));
434 av_assert0(in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout));
436 for(out_i=0; out_i<out->ch_count; out_i++){
437 switch(s->matrix_ch[out_i][0]){
440 memset(out->ch[out_i], 0, len * av_get_bytes_per_sample(s->int_sample_fmt));
443 in_i= s->matrix_ch[out_i][1];
444 if(s->matrix[out_i][in_i]!=1.0){
445 if(s->mix_1_1_simd && len1)
446 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);
448 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);
450 memcpy(out->ch[out_i], in->ch[in_i], len*out->bps);
452 out->ch[out_i]= in->ch[in_i];
456 int in_i1 = s->matrix_ch[out_i][1];
457 int in_i2 = s->matrix_ch[out_i][2];
458 if(s->mix_2_1_simd && len1)
459 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);
461 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);
463 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);
466 if(s->int_sample_fmt == AV_SAMPLE_FMT_FLTP){
467 for(i=0; i<len; i++){
469 for(j=0; j<s->matrix_ch[out_i][0]; j++){
470 in_i= s->matrix_ch[out_i][1+j];
471 v+= ((float*)in->ch[in_i])[i] * s->matrix[out_i][in_i];
473 ((float*)out->ch[out_i])[i]= v;
475 }else if(s->int_sample_fmt == AV_SAMPLE_FMT_DBLP){
476 for(i=0; i<len; i++){
478 for(j=0; j<s->matrix_ch[out_i][0]; j++){
479 in_i= s->matrix_ch[out_i][1+j];
480 v+= ((double*)in->ch[in_i])[i] * s->matrix[out_i][in_i];
482 ((double*)out->ch[out_i])[i]= v;
485 for(i=0; i<len; i++){
487 for(j=0; j<s->matrix_ch[out_i][0]; j++){
488 in_i= s->matrix_ch[out_i][1+j];
489 v+= ((int16_t*)in->ch[in_i])[i] * s->matrix32[out_i][in_i];
491 ((int16_t*)out->ch[out_i])[i]= (v + 16384)>>15;