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 && layout != AV_CH_FRONT_CENTER && !(layout&(layout-1))) {
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;
95 static int sane_layout(int64_t layout){
96 if(!(layout & AV_CH_LAYOUT_SURROUND)) // at least 1 front speaker
98 if(!even(layout & (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT))) // no asymetric front
100 if(!even(layout & (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT))) // no asymetric side
102 if(!even(layout & (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT)))
104 if(!even(layout & (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER)))
106 if(av_get_channel_layout_nb_channels(layout) >= SWR_CH_MAX)
112 av_cold static int auto_matrix(SwrContext *s)
115 double matrix[64][64]={{0}};
116 int64_t unaccounted, in_ch_layout, out_ch_layout;
119 const int matrix_encoding = s->matrix_encoding;
122 in_ch_layout = clean_layout(s, s->in_ch_layout);
123 out_ch_layout = clean_layout(s, s->out_ch_layout);
125 if( out_ch_layout == AV_CH_LAYOUT_STEREO_DOWNMIX
126 && (in_ch_layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == 0
128 out_ch_layout = AV_CH_LAYOUT_STEREO;
130 if(!sane_layout(in_ch_layout)){
131 av_get_channel_layout_string(buf, sizeof(buf), -1, s->in_ch_layout);
132 av_log(s, AV_LOG_ERROR, "Input channel layout '%s' is not supported\n", buf);
133 return AVERROR(EINVAL);
136 if(!sane_layout(out_ch_layout)){
137 av_get_channel_layout_string(buf, sizeof(buf), -1, s->out_ch_layout);
138 av_log(s, AV_LOG_ERROR, "Output channel layout '%s' is not supported\n", buf);
139 return AVERROR(EINVAL);
142 memset(s->matrix, 0, sizeof(s->matrix));
144 if(in_ch_layout & out_ch_layout & (1ULL<<i))
148 unaccounted= in_ch_layout & ~out_ch_layout;
150 //FIXME implement dolby surround
151 //FIXME implement full ac3
154 if(unaccounted & AV_CH_FRONT_CENTER){
155 if((out_ch_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO){
156 if(in_ch_layout & AV_CH_LAYOUT_STEREO) {
157 matrix[ FRONT_LEFT][FRONT_CENTER]+= s->clev;
158 matrix[FRONT_RIGHT][FRONT_CENTER]+= s->clev;
160 matrix[ FRONT_LEFT][FRONT_CENTER]+= M_SQRT1_2;
161 matrix[FRONT_RIGHT][FRONT_CENTER]+= M_SQRT1_2;
166 if(unaccounted & AV_CH_LAYOUT_STEREO){
167 if(out_ch_layout & AV_CH_FRONT_CENTER){
168 matrix[FRONT_CENTER][ FRONT_LEFT]+= M_SQRT1_2;
169 matrix[FRONT_CENTER][FRONT_RIGHT]+= M_SQRT1_2;
170 if(in_ch_layout & AV_CH_FRONT_CENTER)
171 matrix[FRONT_CENTER][ FRONT_CENTER] = s->clev*sqrt(2);
176 if(unaccounted & AV_CH_BACK_CENTER){
177 if(out_ch_layout & AV_CH_BACK_LEFT){
178 matrix[ BACK_LEFT][BACK_CENTER]+= M_SQRT1_2;
179 matrix[BACK_RIGHT][BACK_CENTER]+= M_SQRT1_2;
180 }else if(out_ch_layout & AV_CH_SIDE_LEFT){
181 matrix[ SIDE_LEFT][BACK_CENTER]+= M_SQRT1_2;
182 matrix[SIDE_RIGHT][BACK_CENTER]+= M_SQRT1_2;
183 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
184 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY ||
185 matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
186 if (unaccounted & (AV_CH_BACK_LEFT | AV_CH_SIDE_LEFT)) {
187 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev * M_SQRT1_2;
188 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev * M_SQRT1_2;
190 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev;
191 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev;
194 matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*M_SQRT1_2;
195 matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2;
197 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
198 matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2;
202 if(unaccounted & AV_CH_BACK_LEFT){
203 if(out_ch_layout & AV_CH_BACK_CENTER){
204 matrix[BACK_CENTER][ BACK_LEFT]+= M_SQRT1_2;
205 matrix[BACK_CENTER][BACK_RIGHT]+= M_SQRT1_2;
206 }else if(out_ch_layout & AV_CH_SIDE_LEFT){
207 if(in_ch_layout & AV_CH_SIDE_LEFT){
208 matrix[ SIDE_LEFT][ BACK_LEFT]+= M_SQRT1_2;
209 matrix[SIDE_RIGHT][BACK_RIGHT]+= M_SQRT1_2;
211 matrix[ SIDE_LEFT][ BACK_LEFT]+= 1.0;
212 matrix[SIDE_RIGHT][BACK_RIGHT]+= 1.0;
214 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
215 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
216 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * M_SQRT1_2;
217 matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2;
218 matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2;
219 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * M_SQRT1_2;
220 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
221 matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * SQRT3_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 * SQRT3_2;
226 matrix[ FRONT_LEFT][ BACK_LEFT] += s->slev;
227 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev;
229 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
230 matrix[ FRONT_CENTER][BACK_LEFT ]+= s->slev*M_SQRT1_2;
231 matrix[ FRONT_CENTER][BACK_RIGHT]+= s->slev*M_SQRT1_2;
236 if(unaccounted & AV_CH_SIDE_LEFT){
237 if(out_ch_layout & AV_CH_BACK_LEFT){
238 /* if back channels do not exist in the input, just copy side
239 channels to back channels, otherwise mix side into back */
240 if (in_ch_layout & AV_CH_BACK_LEFT) {
241 matrix[BACK_LEFT ][SIDE_LEFT ] += M_SQRT1_2;
242 matrix[BACK_RIGHT][SIDE_RIGHT] += M_SQRT1_2;
244 matrix[BACK_LEFT ][SIDE_LEFT ] += 1.0;
245 matrix[BACK_RIGHT][SIDE_RIGHT] += 1.0;
247 }else if(out_ch_layout & AV_CH_BACK_CENTER){
248 matrix[BACK_CENTER][ SIDE_LEFT]+= M_SQRT1_2;
249 matrix[BACK_CENTER][SIDE_RIGHT]+= M_SQRT1_2;
250 }else if(out_ch_layout & AV_CH_FRONT_LEFT){
251 if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
252 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * M_SQRT1_2;
253 matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2;
254 matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2;
255 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * M_SQRT1_2;
256 } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
257 matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * SQRT3_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 * SQRT3_2;
262 matrix[ FRONT_LEFT][ SIDE_LEFT] += s->slev;
263 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev;
265 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
266 matrix[ FRONT_CENTER][SIDE_LEFT ]+= s->slev*M_SQRT1_2;
267 matrix[ FRONT_CENTER][SIDE_RIGHT]+= s->slev*M_SQRT1_2;
272 if(unaccounted & AV_CH_FRONT_LEFT_OF_CENTER){
273 if(out_ch_layout & AV_CH_FRONT_LEFT){
274 matrix[ FRONT_LEFT][ FRONT_LEFT_OF_CENTER]+= 1.0;
275 matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER]+= 1.0;
276 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
277 matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= M_SQRT1_2;
278 matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= M_SQRT1_2;
282 /* mix LFE into front left/right or center */
283 if (unaccounted & AV_CH_LOW_FREQUENCY) {
284 if (out_ch_layout & AV_CH_FRONT_CENTER) {
285 matrix[FRONT_CENTER][LOW_FREQUENCY] += s->lfe_mix_level;
286 } else if (out_ch_layout & AV_CH_FRONT_LEFT) {
287 matrix[FRONT_LEFT ][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2;
288 matrix[FRONT_RIGHT][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2;
293 for(out_i=i=0; i<64; i++){
297 s->matrix[out_i][in_i]= matrix[i][j];
299 sum += fabs(matrix[i][j]);
301 if(in_ch_layout & (1ULL<<j))
304 maxcoef= FFMAX(maxcoef, sum);
305 if(out_ch_layout & (1ULL<<i))
308 if(s->rematrix_volume < 0)
309 maxcoef = -s->rematrix_volume;
311 if (s->rematrix_maxval > 0) {
312 maxval = s->rematrix_maxval;
313 } else if ( av_get_packed_sample_fmt(s->out_sample_fmt) < AV_SAMPLE_FMT_FLT
314 || av_get_packed_sample_fmt(s->int_sample_fmt) < AV_SAMPLE_FMT_FLT) {
319 if(maxcoef > maxval || s->rematrix_volume < 0){
321 for(i=0; i<SWR_CH_MAX; i++)
322 for(j=0; j<SWR_CH_MAX; j++){
323 s->matrix[i][j] /= maxcoef;
327 if(s->rematrix_volume > 0){
328 for(i=0; i<SWR_CH_MAX; i++)
329 for(j=0; j<SWR_CH_MAX; j++){
330 s->matrix[i][j] *= s->rematrix_volume;
334 for(i=0; i<av_get_channel_layout_nb_channels(out_ch_layout); i++){
335 for(j=0; j<av_get_channel_layout_nb_channels(in_ch_layout); j++){
336 av_log(NULL, AV_LOG_DEBUG, "%f ", s->matrix[i][j]);
338 av_log(NULL, AV_LOG_DEBUG, "\n");
343 av_cold int swri_rematrix_init(SwrContext *s){
345 int nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout);
346 int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout);
350 if (!s->rematrix_custom) {
351 int r = auto_matrix(s);
355 if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
356 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int));
357 s->native_one = av_mallocz(sizeof(int));
358 for (i = 0; i < nb_out; i++)
359 for (j = 0; j < nb_in; j++)
360 ((int*)s->native_matrix)[i * nb_in + j] = lrintf(s->matrix[i][j] * 32768);
361 *((int*)s->native_one) = 32768;
362 s->mix_1_1_f = (mix_1_1_func_type*)copy_s16;
363 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s16;
364 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s16(s);
365 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){
366 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(float));
367 s->native_one = av_mallocz(sizeof(float));
368 for (i = 0; i < nb_out; i++)
369 for (j = 0; j < nb_in; j++)
370 ((float*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
371 *((float*)s->native_one) = 1.0;
372 s->mix_1_1_f = (mix_1_1_func_type*)copy_float;
373 s->mix_2_1_f = (mix_2_1_func_type*)sum2_float;
374 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_float(s);
375 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){
376 s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
377 s->native_one = av_mallocz(sizeof(double));
378 for (i = 0; i < nb_out; i++)
379 for (j = 0; j < nb_in; j++)
380 ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
381 *((double*)s->native_one) = 1.0;
382 s->mix_1_1_f = (mix_1_1_func_type*)copy_double;
383 s->mix_2_1_f = (mix_2_1_func_type*)sum2_double;
384 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_double(s);
385 }else if(s->midbuf.fmt == AV_SAMPLE_FMT_S32P){
386 // Only for dithering currently
387 // s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
388 s->native_one = av_mallocz(sizeof(int));
389 // for (i = 0; i < nb_out; i++)
390 // for (j = 0; j < nb_in; j++)
391 // ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
392 *((int*)s->native_one) = 32768;
393 s->mix_1_1_f = (mix_1_1_func_type*)copy_s32;
394 s->mix_2_1_f = (mix_2_1_func_type*)sum2_s32;
395 s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s32(s);
398 //FIXME quantize for integeres
399 for (i = 0; i < SWR_CH_MAX; i++) {
401 for (j = 0; j < SWR_CH_MAX; j++) {
402 s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
404 s->matrix_ch[i][++ch_in]= j;
406 s->matrix_ch[i][0]= ch_in;
409 if(HAVE_YASM && HAVE_MMX) swri_rematrix_init_x86(s);
414 av_cold void swri_rematrix_free(SwrContext *s){
415 av_freep(&s->native_matrix);
416 av_freep(&s->native_one);
417 av_freep(&s->native_simd_matrix);
418 av_freep(&s->native_simd_one);
421 int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy){
422 int out_i, in_i, i, j;
427 s->mix_any_f(out->ch, (const uint8_t **)in->ch, s->native_matrix, len);
431 if(s->mix_2_1_simd || s->mix_1_1_simd){
433 off = len1 * out->bps;
436 av_assert0(!s->out_ch_layout || out->ch_count == av_get_channel_layout_nb_channels(s->out_ch_layout));
437 av_assert0(!s-> in_ch_layout || in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout));
439 for(out_i=0; out_i<out->ch_count; out_i++){
440 switch(s->matrix_ch[out_i][0]){
443 memset(out->ch[out_i], 0, len * av_get_bytes_per_sample(s->int_sample_fmt));
446 in_i= s->matrix_ch[out_i][1];
447 if(s->matrix[out_i][in_i]!=1.0){
448 if(s->mix_1_1_simd && len1)
449 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);
451 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);
453 memcpy(out->ch[out_i], in->ch[in_i], len*out->bps);
455 out->ch[out_i]= in->ch[in_i];
459 int in_i1 = s->matrix_ch[out_i][1];
460 int in_i2 = s->matrix_ch[out_i][2];
461 if(s->mix_2_1_simd && len1)
462 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);
464 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);
466 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);
469 if(s->int_sample_fmt == AV_SAMPLE_FMT_FLTP){
470 for(i=0; i<len; i++){
472 for(j=0; j<s->matrix_ch[out_i][0]; j++){
473 in_i= s->matrix_ch[out_i][1+j];
474 v+= ((float*)in->ch[in_i])[i] * s->matrix[out_i][in_i];
476 ((float*)out->ch[out_i])[i]= v;
478 }else if(s->int_sample_fmt == AV_SAMPLE_FMT_DBLP){
479 for(i=0; i<len; i++){
481 for(j=0; j<s->matrix_ch[out_i][0]; j++){
482 in_i= s->matrix_ch[out_i][1+j];
483 v+= ((double*)in->ch[in_i])[i] * s->matrix[out_i][in_i];
485 ((double*)out->ch[out_i])[i]= v;
488 for(i=0; i<len; i++){
490 for(j=0; j<s->matrix_ch[out_i][0]; j++){
491 in_i= s->matrix_ch[out_i][1+j];
492 v+= ((int16_t*)in->ch[in_i])[i] * s->matrix32[out_i][in_i];
494 ((int16_t*)out->ch[out_i])[i]= (v + 16384)>>15;