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( in_ch_layout == AV_CH_LAYOUT_STEREO_DOWNMIX
131 && (out_ch_layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == 0
133 in_ch_layout = AV_CH_LAYOUT_STEREO;
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);
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);
147 memset(s->matrix, 0, sizeof(s->matrix));
149 if(in_ch_layout & out_ch_layout & (1ULL<<i))
153 unaccounted= in_ch_layout & ~out_ch_layout;
155 //FIXME implement dolby surround
156 //FIXME implement full ac3
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;
165 matrix[ FRONT_LEFT][FRONT_CENTER]+= M_SQRT1_2;
166 matrix[FRONT_RIGHT][FRONT_CENTER]+= M_SQRT1_2;
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);
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;
195 matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev;
196 matrix[FRONT_RIGHT][BACK_CENTER] += s->slev;
199 matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*M_SQRT1_2;
200 matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2;
202 }else if(out_ch_layout & AV_CH_FRONT_CENTER){
203 matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2;
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;
216 matrix[ SIDE_LEFT][ BACK_LEFT]+= 1.0;
217 matrix[SIDE_RIGHT][BACK_RIGHT]+= 1.0;
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;
231 matrix[ FRONT_LEFT][ BACK_LEFT] += s->slev;
232 matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev;
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;
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;
249 matrix[BACK_LEFT ][SIDE_LEFT ] += 1.0;
250 matrix[BACK_RIGHT][SIDE_RIGHT] += 1.0;
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;
267 matrix[ FRONT_LEFT][ SIDE_LEFT] += s->slev;
268 matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev;
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;
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;
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;
298 for(out_i=i=0; i<64; i++){
302 s->matrix[out_i][in_i]= matrix[i][j];
304 sum += fabs(matrix[i][j]);
306 if(in_ch_layout & (1ULL<<j))
309 maxcoef= FFMAX(maxcoef, sum);
310 if(out_ch_layout & (1ULL<<i))
313 if(s->rematrix_volume < 0)
314 maxcoef = -s->rematrix_volume;
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) {
324 if(maxcoef > maxval || s->rematrix_volume < 0){
326 for(i=0; i<SWR_CH_MAX; i++)
327 for(j=0; j<SWR_CH_MAX; j++){
328 s->matrix[i][j] /= maxcoef;
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;
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]);
343 av_log(NULL, AV_LOG_DEBUG, "\n");
348 av_cold int swri_rematrix_init(SwrContext *s){
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);
355 if (!s->rematrix_custom) {
356 int r = auto_matrix(s);
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);
403 //FIXME quantize for integeres
404 for (i = 0; i < SWR_CH_MAX; i++) {
406 for (j = 0; j < SWR_CH_MAX; j++) {
407 s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
409 s->matrix_ch[i][++ch_in]= j;
411 s->matrix_ch[i][0]= ch_in;
414 if(HAVE_YASM && HAVE_MMX) swri_rematrix_init_x86(s);
419 av_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);
426 int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy){
427 int out_i, in_i, i, j;
432 s->mix_any_f(out->ch, (const uint8_t **)in->ch, s->native_matrix, len);
436 if(s->mix_2_1_simd || s->mix_1_1_simd){
438 off = len1 * out->bps;
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));
444 for(out_i=0; out_i<out->ch_count; out_i++){
445 switch(s->matrix_ch[out_i][0]){
448 memset(out->ch[out_i], 0, len * av_get_bytes_per_sample(s->int_sample_fmt));
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);
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);
458 memcpy(out->ch[out_i], in->ch[in_i], len*out->bps);
460 out->ch[out_i]= in->ch[in_i];
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);
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);
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);
474 if(s->int_sample_fmt == AV_SAMPLE_FMT_FLTP){
475 for(i=0; i<len; i++){
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];
481 ((float*)out->ch[out_i])[i]= v;
483 }else if(s->int_sample_fmt == AV_SAMPLE_FMT_DBLP){
484 for(i=0; i<len; i++){
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];
490 ((double*)out->ch[out_i])[i]= v;
493 for(i=0; i<len; i++){
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];
499 ((int16_t*)out->ch[out_i])[i]= (v + 16384)>>15;