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FFmpeg/libswresample/rematrix.c

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/*
* Copyright (C) 2011-2012 Michael Niedermayer (michaelni@gmx.at)
*
* This file is part of libswresample
*
* libswresample is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* libswresample is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with libswresample; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "swresample_internal.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#define TEMPLATE_REMATRIX_FLT
#include "rematrix_template.c"
#undef TEMPLATE_REMATRIX_FLT
#define TEMPLATE_REMATRIX_DBL
#include "rematrix_template.c"
#undef TEMPLATE_REMATRIX_DBL
#define TEMPLATE_REMATRIX_S16
#include "rematrix_template.c"
#define TEMPLATE_CLIP
#include "rematrix_template.c"
#undef TEMPLATE_CLIP
#undef TEMPLATE_REMATRIX_S16
#define TEMPLATE_REMATRIX_S32
#include "rematrix_template.c"
#undef TEMPLATE_REMATRIX_S32
#define FRONT_LEFT 0
#define FRONT_RIGHT 1
#define FRONT_CENTER 2
#define LOW_FREQUENCY 3
#define BACK_LEFT 4
#define BACK_RIGHT 5
#define FRONT_LEFT_OF_CENTER 6
#define FRONT_RIGHT_OF_CENTER 7
#define BACK_CENTER 8
#define SIDE_LEFT 9
#define SIDE_RIGHT 10
#define TOP_CENTER 11
#define TOP_FRONT_LEFT 12
#define TOP_FRONT_CENTER 13
#define TOP_FRONT_RIGHT 14
#define TOP_BACK_LEFT 15
#define TOP_BACK_CENTER 16
#define TOP_BACK_RIGHT 17
#define NUM_NAMED_CHANNELS 18
int swr_set_matrix(struct SwrContext *s, const double *matrix, int stride)
{
int nb_in, nb_out, in, out;
if (!s || s->in_convert) // s needs to be allocated but not initialized
return AVERROR(EINVAL);
memset(s->matrix, 0, sizeof(s->matrix));
memset(s->matrix_flt, 0, sizeof(s->matrix_flt));
nb_in = s->user_in_chlayout.nb_channels;
nb_out = s->user_out_chlayout.nb_channels;
for (out = 0; out < nb_out; out++) {
for (in = 0; in < nb_in; in++)
s->matrix_flt[out][in] = s->matrix[out][in] = matrix[in];
matrix += stride;
}
s->rematrix_custom = 1;
return 0;
}
static int even(int64_t layout){
if(!layout) return 1;
if(layout&(layout-1)) return 1;
return 0;
}
static int clean_layout(AVChannelLayout *out, const AVChannelLayout *in, void *s)
{
int ret = 0;
if (av_channel_layout_index_from_channel(in, AV_CHAN_FRONT_CENTER) < 0 && in->nb_channels == 1) {
char buf[128];
av_channel_layout_describe(in, buf, sizeof(buf));
av_log(s, AV_LOG_VERBOSE, "Treating %s as mono\n", buf);
*out = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
} else
ret = av_channel_layout_copy(out, in);
return ret;
}
static int sane_layout(AVChannelLayout *ch_layout) {
if (ch_layout->order != AV_CHANNEL_ORDER_NATIVE)
return 0;
if(!av_channel_layout_subset(ch_layout, AV_CH_LAYOUT_SURROUND)) // at least 1 front speaker
return 0;
if(!even(av_channel_layout_subset(ch_layout, (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT)))) // no asymetric front
return 0;
if(!even(av_channel_layout_subset(ch_layout, (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT)))) // no asymetric side
return 0;
if(!even(av_channel_layout_subset(ch_layout, (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT))))
return 0;
if(!even(av_channel_layout_subset(ch_layout, (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER))))
return 0;
if(!even(av_channel_layout_subset(ch_layout, (AV_CH_TOP_FRONT_LEFT | AV_CH_TOP_FRONT_RIGHT))))
return 0;
if(ch_layout->nb_channels >= SWR_CH_MAX)
return 0;
return 1;
}
av_cold int swr_build_matrix2(const AVChannelLayout *in_layout, const AVChannelLayout *out_layout,
double center_mix_level, double surround_mix_level,
double lfe_mix_level, double maxval,
double rematrix_volume, double *matrix_param,
ptrdiff_t stride, enum AVMatrixEncoding matrix_encoding, void *log_context)
{
int i, j, out_i, ret;
AVChannelLayout in_ch_layout = { 0 }, out_ch_layout = { 0 };
double matrix[NUM_NAMED_CHANNELS][NUM_NAMED_CHANNELS]={{0}};
int64_t unaccounted;
double maxcoef=0;
char buf[128];
ret = clean_layout(&in_ch_layout, in_layout, log_context);
ret |= clean_layout(&out_ch_layout, out_layout, log_context);
if (ret < 0)
goto fail;
if( !av_channel_layout_compare(&out_ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO_DOWNMIX)
&& !av_channel_layout_subset(&in_ch_layout, AV_CH_LAYOUT_STEREO_DOWNMIX)
) {
av_channel_layout_uninit(&out_ch_layout);
out_ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
}
if( !av_channel_layout_compare(&in_ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO_DOWNMIX)
&& !av_channel_layout_subset(&out_ch_layout, AV_CH_LAYOUT_STEREO_DOWNMIX)
) {
av_channel_layout_uninit(&in_ch_layout);
in_ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
}
if (!av_channel_layout_compare(&in_ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_22POINT2) &&
av_channel_layout_compare(&out_ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_22POINT2)) {
av_channel_layout_from_mask(&in_ch_layout, (AV_CH_LAYOUT_7POINT1_WIDE_BACK|AV_CH_BACK_CENTER));
av_channel_layout_describe(&in_ch_layout, buf, sizeof(buf));
av_log(log_context, AV_LOG_WARNING,
"Full-on remixing from 22.2 has not yet been implemented! "
"Processing the input as '%s'\n",
buf);
}
if(!av_channel_layout_check(&in_ch_layout)) {
av_log(log_context, AV_LOG_ERROR, "Input channel layout is invalid\n");
ret = AVERROR(EINVAL);
goto fail;
}
if(!sane_layout(&in_ch_layout)) {
av_channel_layout_describe(&in_ch_layout, buf, sizeof(buf));
av_log(log_context, AV_LOG_ERROR, "Input channel layout '%s' is not supported\n", buf);
ret = AVERROR(EINVAL);
goto fail;
}
if(!av_channel_layout_check(&out_ch_layout)) {
av_log(log_context, AV_LOG_ERROR, "Output channel layout is invalid\n");
ret = AVERROR(EINVAL);
goto fail;
}
if(!sane_layout(&out_ch_layout)) {
av_channel_layout_describe(&out_ch_layout, buf, sizeof(buf));
av_log(log_context, AV_LOG_ERROR, "Output channel layout '%s' is not supported\n", buf);
ret = AVERROR(EINVAL);
goto fail;
}
for(i=0; i<FF_ARRAY_ELEMS(matrix); i++){
if( av_channel_layout_index_from_channel(&in_ch_layout, i) >= 0
&& av_channel_layout_index_from_channel(&out_ch_layout, i) >= 0)
matrix[i][i]= 1.0;
}
unaccounted = in_ch_layout.u.mask & ~out_ch_layout.u.mask;
//FIXME implement dolby surround
//FIXME implement full ac3
if(unaccounted & AV_CH_FRONT_CENTER){
if (av_channel_layout_subset(&out_ch_layout, AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO) {
if (av_channel_layout_subset(&in_ch_layout, AV_CH_LAYOUT_STEREO)) {
matrix[ FRONT_LEFT][FRONT_CENTER]+= center_mix_level;
matrix[FRONT_RIGHT][FRONT_CENTER]+= center_mix_level;
} else {
matrix[ FRONT_LEFT][FRONT_CENTER]+= M_SQRT1_2;
matrix[FRONT_RIGHT][FRONT_CENTER]+= M_SQRT1_2;
}
}else
av_assert0(0);
}
if(unaccounted & AV_CH_LAYOUT_STEREO){
if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_CENTER) >= 0) {
matrix[FRONT_CENTER][ FRONT_LEFT]+= M_SQRT1_2;
matrix[FRONT_CENTER][FRONT_RIGHT]+= M_SQRT1_2;
if (av_channel_layout_index_from_channel(&in_ch_layout, AV_CHAN_FRONT_CENTER) >= 0)
matrix[FRONT_CENTER][ FRONT_CENTER] = center_mix_level*sqrt(2);
}else
av_assert0(0);
}
if(unaccounted & AV_CH_BACK_CENTER){
if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_BACK_LEFT) >= 0) {
matrix[ BACK_LEFT][BACK_CENTER]+= M_SQRT1_2;
matrix[BACK_RIGHT][BACK_CENTER]+= M_SQRT1_2;
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_SIDE_LEFT) >= 0) {
matrix[ SIDE_LEFT][BACK_CENTER]+= M_SQRT1_2;
matrix[SIDE_RIGHT][BACK_CENTER]+= M_SQRT1_2;
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_LEFT) >= 0) {
if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY ||
matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
if (unaccounted & (AV_CH_BACK_LEFT | AV_CH_SIDE_LEFT)) {
matrix[FRONT_LEFT ][BACK_CENTER] -= surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][BACK_CENTER] += surround_mix_level * M_SQRT1_2;
} else {
matrix[FRONT_LEFT ][BACK_CENTER] -= surround_mix_level;
matrix[FRONT_RIGHT][BACK_CENTER] += surround_mix_level;
}
} else {
matrix[ FRONT_LEFT][BACK_CENTER]+= surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][BACK_CENTER]+= surround_mix_level * M_SQRT1_2;
}
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_CENTER) >= 0) {
matrix[ FRONT_CENTER][BACK_CENTER]+= surround_mix_level * M_SQRT1_2;
}else
av_assert0(0);
}
if(unaccounted & AV_CH_BACK_LEFT){
if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_BACK_CENTER) >= 0) {
matrix[BACK_CENTER][ BACK_LEFT]+= M_SQRT1_2;
matrix[BACK_CENTER][BACK_RIGHT]+= M_SQRT1_2;
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_SIDE_LEFT) >= 0) {
if (av_channel_layout_index_from_channel(&in_ch_layout, AV_CHAN_SIDE_LEFT) >= 0) {
matrix[ SIDE_LEFT][ BACK_LEFT]+= M_SQRT1_2;
matrix[SIDE_RIGHT][BACK_RIGHT]+= M_SQRT1_2;
}else{
matrix[ SIDE_LEFT][ BACK_LEFT]+= 1.0;
matrix[SIDE_RIGHT][BACK_RIGHT]+= 1.0;
}
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_LEFT) >= 0) {
if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
matrix[FRONT_LEFT ][BACK_LEFT ] -= surround_mix_level * M_SQRT1_2;
matrix[FRONT_LEFT ][BACK_RIGHT] -= surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][BACK_LEFT ] += surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][BACK_RIGHT] += surround_mix_level * M_SQRT1_2;
} else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
matrix[FRONT_LEFT ][BACK_LEFT ] -= surround_mix_level * SQRT3_2;
matrix[FRONT_LEFT ][BACK_RIGHT] -= surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][BACK_LEFT ] += surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][BACK_RIGHT] += surround_mix_level * SQRT3_2;
} else {
matrix[ FRONT_LEFT][ BACK_LEFT] += surround_mix_level;
matrix[FRONT_RIGHT][BACK_RIGHT] += surround_mix_level;
}
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_CENTER) >= 0) {
matrix[ FRONT_CENTER][BACK_LEFT ]+= surround_mix_level*M_SQRT1_2;
matrix[ FRONT_CENTER][BACK_RIGHT]+= surround_mix_level*M_SQRT1_2;
}else
av_assert0(0);
}
if(unaccounted & AV_CH_SIDE_LEFT){
if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_BACK_LEFT) >= 0) {
/* if back channels do not exist in the input, just copy side
channels to back channels, otherwise mix side into back */
if (av_channel_layout_index_from_channel(&in_ch_layout, AV_CHAN_BACK_LEFT) >= 0) {
matrix[BACK_LEFT ][SIDE_LEFT ] += M_SQRT1_2;
matrix[BACK_RIGHT][SIDE_RIGHT] += M_SQRT1_2;
} else {
matrix[BACK_LEFT ][SIDE_LEFT ] += 1.0;
matrix[BACK_RIGHT][SIDE_RIGHT] += 1.0;
}
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_BACK_CENTER) >= 0) {
matrix[BACK_CENTER][ SIDE_LEFT]+= M_SQRT1_2;
matrix[BACK_CENTER][SIDE_RIGHT]+= M_SQRT1_2;
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_LEFT) >= 0) {
if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) {
matrix[FRONT_LEFT ][SIDE_LEFT ] -= surround_mix_level * M_SQRT1_2;
matrix[FRONT_LEFT ][SIDE_RIGHT] -= surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][SIDE_LEFT ] += surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][SIDE_RIGHT] += surround_mix_level * M_SQRT1_2;
} else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) {
matrix[FRONT_LEFT ][SIDE_LEFT ] -= surround_mix_level * SQRT3_2;
matrix[FRONT_LEFT ][SIDE_RIGHT] -= surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][SIDE_LEFT ] += surround_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][SIDE_RIGHT] += surround_mix_level * SQRT3_2;
} else {
matrix[ FRONT_LEFT][ SIDE_LEFT] += surround_mix_level;
matrix[FRONT_RIGHT][SIDE_RIGHT] += surround_mix_level;
}
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_CENTER) >= 0) {
matrix[ FRONT_CENTER][SIDE_LEFT ]+= surround_mix_level * M_SQRT1_2;
matrix[ FRONT_CENTER][SIDE_RIGHT]+= surround_mix_level * M_SQRT1_2;
}else
av_assert0(0);
}
if(unaccounted & AV_CH_FRONT_LEFT_OF_CENTER){
if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_LEFT) >= 0) {
matrix[ FRONT_LEFT][ FRONT_LEFT_OF_CENTER]+= 1.0;
matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER]+= 1.0;
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_CENTER) >= 0) {
matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= M_SQRT1_2;
matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= M_SQRT1_2;
}else
av_assert0(0);
}
if (unaccounted & AV_CH_TOP_FRONT_LEFT) {
if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_TOP_FRONT_CENTER) >= 0) {
matrix[TOP_FRONT_CENTER][TOP_FRONT_LEFT ] += M_SQRT1_2;
matrix[TOP_FRONT_CENTER][TOP_FRONT_RIGHT] += M_SQRT1_2;
if (av_channel_layout_index_from_channel(&in_ch_layout, AV_CHAN_TOP_FRONT_CENTER) >= 0)
matrix[TOP_FRONT_CENTER][TOP_FRONT_CENTER] = center_mix_level * sqrt(2);
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_LEFT) >= 0) {
if (av_channel_layout_index_from_channel(&in_ch_layout, AV_CHAN_FRONT_LEFT) >= 0) {
matrix[FRONT_LEFT ][TOP_FRONT_LEFT ] += M_SQRT1_2;
matrix[FRONT_RIGHT][TOP_FRONT_RIGHT] += M_SQRT1_2;
} else {
matrix[FRONT_LEFT ][TOP_FRONT_LEFT ] += 1.0;
matrix[FRONT_RIGHT][TOP_FRONT_RIGHT] += 1.0;
}
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_CENTER) >= 0) {
matrix[FRONT_CENTER][TOP_FRONT_LEFT ] += M_SQRT1_2;
matrix[FRONT_CENTER][TOP_FRONT_RIGHT] += M_SQRT1_2;
} else
av_assert0(0);
}
/* mix LFE into front left/right or center */
if (unaccounted & AV_CH_LOW_FREQUENCY) {
if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_CENTER) >= 0) {
matrix[FRONT_CENTER][LOW_FREQUENCY] += lfe_mix_level;
} else if (av_channel_layout_index_from_channel(&out_ch_layout, AV_CHAN_FRONT_LEFT) >= 0) {
matrix[FRONT_LEFT ][LOW_FREQUENCY] += lfe_mix_level * M_SQRT1_2;
matrix[FRONT_RIGHT][LOW_FREQUENCY] += lfe_mix_level * M_SQRT1_2;
} else
av_assert0(0);
}
for(out_i=i=0; i<64; i++){
double sum=0;
int in_i=0;
if (av_channel_layout_index_from_channel(&out_ch_layout, i) < 0)
continue;
for(j=0; j<64; j++){
if (av_channel_layout_index_from_channel(&in_ch_layout, j) < 0)
continue;
if (i < FF_ARRAY_ELEMS(matrix) && j < FF_ARRAY_ELEMS(matrix[0]))
matrix_param[stride*out_i + in_i] = matrix[i][j];
else
matrix_param[stride*out_i + in_i] = i == j &&
( av_channel_layout_index_from_channel(&in_ch_layout, i) >= 0
&& av_channel_layout_index_from_channel(&out_ch_layout, i) >= 0);
sum += fabs(matrix_param[stride*out_i + in_i]);
in_i++;
}
maxcoef= FFMAX(maxcoef, sum);
out_i++;
}
if(rematrix_volume < 0)
maxcoef = -rematrix_volume;
if(maxcoef > maxval || rematrix_volume < 0){
maxcoef /= maxval;
for(i=0; i<SWR_CH_MAX; i++)
for(j=0; j<SWR_CH_MAX; j++){
matrix_param[stride*i + j] /= maxcoef;
}
}
if(rematrix_volume > 0){
for(i=0; i<SWR_CH_MAX; i++)
for(j=0; j<SWR_CH_MAX; j++){
matrix_param[stride*i + j] *= rematrix_volume;
}
}
av_log(log_context, AV_LOG_DEBUG, "Matrix coefficients:\n");
for (i = 0; i < out_ch_layout.nb_channels; i++){
av_channel_name(buf, sizeof(buf), av_channel_layout_channel_from_index(&out_ch_layout, i));
av_log(log_context, AV_LOG_DEBUG, "%s: ", buf);
for (j = 0; j < in_ch_layout.nb_channels; j++){
av_channel_name(buf, sizeof(buf), av_channel_layout_channel_from_index(&in_ch_layout, j));
av_log(log_context, AV_LOG_DEBUG, "%s:%f ", buf, matrix_param[stride*i + j]);
}
av_log(log_context, AV_LOG_DEBUG, "\n");
}
ret = 0;
fail:
av_channel_layout_uninit(&in_ch_layout);
av_channel_layout_uninit(&out_ch_layout);
return ret;
}
av_cold static int auto_matrix(SwrContext *s)
{
double maxval;
int ret;
if (s->rematrix_maxval > 0) {
maxval = s->rematrix_maxval;
} else if ( av_get_packed_sample_fmt(s->out_sample_fmt) < AV_SAMPLE_FMT_FLT
|| av_get_packed_sample_fmt(s->int_sample_fmt) < AV_SAMPLE_FMT_FLT) {
maxval = 1.0;
} else
maxval = INT_MAX;
memset(s->matrix, 0, sizeof(s->matrix));
ret = swr_build_matrix2(&s->in_ch_layout, &s->out_ch_layout,
s->clev, s->slev, s->lfe_mix_level,
maxval, s->rematrix_volume, (double*)s->matrix,
s->matrix[1] - s->matrix[0], s->matrix_encoding, s);
if (ret >= 0 && s->int_sample_fmt == AV_SAMPLE_FMT_FLTP) {
int i, j;
for (i = 0; i < FF_ARRAY_ELEMS(s->matrix[0]); i++)
for (j = 0; j < FF_ARRAY_ELEMS(s->matrix[0]); j++)
s->matrix_flt[i][j] = s->matrix[i][j];
}
return ret;
}
av_cold int swri_rematrix_init(SwrContext *s){
int i, j;
int nb_in = s->used_ch_layout.nb_channels;
int nb_out = s->out.ch_count;
s->mix_any_f = NULL;
if (!s->rematrix_custom) {
int r = auto_matrix(s);
if (r)
return r;
}
if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
int maxsum = 0;
s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int));
s->native_one = av_mallocz(sizeof(int));
if (!s->native_matrix || !s->native_one)
return AVERROR(ENOMEM);
for (i = 0; i < nb_out; i++) {
double rem = 0;
int sum = 0;
for (j = 0; j < nb_in; j++) {
double target = s->matrix[i][j] * 32768 + rem;
((int*)s->native_matrix)[i * nb_in + j] = lrintf(target);
rem += target - ((int*)s->native_matrix)[i * nb_in + j];
sum += FFABS(((int*)s->native_matrix)[i * nb_in + j]);
}
maxsum = FFMAX(maxsum, sum);
}
*((int*)s->native_one) = 32768;
if (maxsum <= 32768) {
s->mix_1_1_f = (mix_1_1_func_type*)copy_s16;
s->mix_2_1_f = (mix_2_1_func_type*)sum2_s16;
s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s16(s);
} else {
s->mix_1_1_f = (mix_1_1_func_type*)copy_clip_s16;
s->mix_2_1_f = (mix_2_1_func_type*)sum2_clip_s16;
s->mix_any_f = (mix_any_func_type*)get_mix_any_func_clip_s16(s);
}
}else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){
s->native_matrix = av_calloc(nb_in * nb_out, sizeof(float));
s->native_one = av_mallocz(sizeof(float));
if (!s->native_matrix || !s->native_one)
return AVERROR(ENOMEM);
for (i = 0; i < nb_out; i++)
for (j = 0; j < nb_in; j++)
((float*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
*((float*)s->native_one) = 1.0;
s->mix_1_1_f = (mix_1_1_func_type*)copy_float;
s->mix_2_1_f = (mix_2_1_func_type*)sum2_float;
s->mix_any_f = (mix_any_func_type*)get_mix_any_func_float(s);
}else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){
s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
s->native_one = av_mallocz(sizeof(double));
if (!s->native_matrix || !s->native_one)
return AVERROR(ENOMEM);
for (i = 0; i < nb_out; i++)
for (j = 0; j < nb_in; j++)
((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
*((double*)s->native_one) = 1.0;
s->mix_1_1_f = (mix_1_1_func_type*)copy_double;
s->mix_2_1_f = (mix_2_1_func_type*)sum2_double;
s->mix_any_f = (mix_any_func_type*)get_mix_any_func_double(s);
}else if(s->midbuf.fmt == AV_SAMPLE_FMT_S32P){
s->native_one = av_mallocz(sizeof(int));
if (!s->native_one)
return AVERROR(ENOMEM);
s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int));
if (!s->native_matrix) {
av_freep(&s->native_one);
return AVERROR(ENOMEM);
}
for (i = 0; i < nb_out; i++) {
double rem = 0;
for (j = 0; j < nb_in; j++) {
double target = s->matrix[i][j] * 32768 + rem;
((int*)s->native_matrix)[i * nb_in + j] = lrintf(target);
rem += target - ((int*)s->native_matrix)[i * nb_in + j];
}
}
*((int*)s->native_one) = 32768;
s->mix_1_1_f = (mix_1_1_func_type*)copy_s32;
s->mix_2_1_f = (mix_2_1_func_type*)sum2_s32;
s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s32(s);
}else
av_assert0(0);
//FIXME quantize for integeres
for (i = 0; i < SWR_CH_MAX; i++) {
int ch_in=0;
for (j = 0; j < SWR_CH_MAX; j++) {
s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
if(s->matrix[i][j])
s->matrix_ch[i][++ch_in]= j;
}
s->matrix_ch[i][0]= ch_in;
}
#if ARCH_X86 && HAVE_X86ASM && HAVE_MMX
return swri_rematrix_init_x86(s);
#endif
return 0;
}
av_cold void swri_rematrix_free(SwrContext *s){
av_freep(&s->native_matrix);
av_freep(&s->native_one);
av_freep(&s->native_simd_matrix);
av_freep(&s->native_simd_one);
}
int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy){
int out_i, in_i, i, j;
int len1 = 0;
int off = 0;
if(s->mix_any_f) {
s->mix_any_f(out->ch, (const uint8_t **)in->ch, s->native_matrix, len);
return 0;
}
if(s->mix_2_1_simd || s->mix_1_1_simd){
len1= len&~15;
off = len1 * out->bps;
}
av_assert0(s->out_ch_layout.order == AV_CHANNEL_ORDER_UNSPEC || out->ch_count == s->out_ch_layout.nb_channels);
av_assert0(s-> in_ch_layout.order == AV_CHANNEL_ORDER_UNSPEC || in ->ch_count == s->in_ch_layout.nb_channels);
for(out_i=0; out_i<out->ch_count; out_i++){
switch(s->matrix_ch[out_i][0]){
case 0:
if(mustcopy)
memset(out->ch[out_i], 0, len * av_get_bytes_per_sample(s->int_sample_fmt));
break;
case 1:
in_i= s->matrix_ch[out_i][1];
if(s->matrix[out_i][in_i]!=1.0){
if(s->mix_1_1_simd && len1)
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);
if(len != len1)
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);
}else if(mustcopy){
memcpy(out->ch[out_i], in->ch[in_i], len*out->bps);
}else{
out->ch[out_i]= in->ch[in_i];
}
break;
case 2: {
int in_i1 = s->matrix_ch[out_i][1];
int in_i2 = s->matrix_ch[out_i][2];
if(s->mix_2_1_simd && len1)
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);
else
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);
if(len != len1)
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);
break;}
default:
if(s->int_sample_fmt == AV_SAMPLE_FMT_FLTP){
for(i=0; i<len; i++){
float v=0;
for(j=0; j<s->matrix_ch[out_i][0]; j++){
in_i= s->matrix_ch[out_i][1+j];
v+= ((float*)in->ch[in_i])[i] * s->matrix_flt[out_i][in_i];
}
((float*)out->ch[out_i])[i]= v;
}
}else if(s->int_sample_fmt == AV_SAMPLE_FMT_DBLP){
for(i=0; i<len; i++){
double v=0;
for(j=0; j<s->matrix_ch[out_i][0]; j++){
in_i= s->matrix_ch[out_i][1+j];
v+= ((double*)in->ch[in_i])[i] * s->matrix[out_i][in_i];
}
((double*)out->ch[out_i])[i]= v;
}
}else{
for(i=0; i<len; i++){
int v=0;
for(j=0; j<s->matrix_ch[out_i][0]; j++){
in_i= s->matrix_ch[out_i][1+j];
v+= ((int16_t*)in->ch[in_i])[i] * s->matrix32[out_i][in_i];
}
((int16_t*)out->ch[out_i])[i]= (v + 16384)>>15;
}
}
}
}
return 0;
}