diff options
Diffstat (limited to 'libswresample/rematrix.c')
| -rw-r--r-- | libswresample/rematrix.c | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/libswresample/rematrix.c b/libswresample/rematrix.c new file mode 100644 index 0000000000..84c55ee00c --- /dev/null +++ b/libswresample/rematrix.c @@ -0,0 +1,472 @@ +/* + * 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" +#undef TEMPLATE_REMATRIX_S16 + +#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 + +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)); + nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout); + nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout); + for (out = 0; out < nb_out; out++) { + for (in = 0; in < nb_in; 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(SwrContext *s, int64_t layout){ + if((layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == AV_CH_LAYOUT_STEREO_DOWNMIX) + return AV_CH_LAYOUT_STEREO; + + if(layout && layout != AV_CH_FRONT_CENTER && !(layout&(layout-1))) { + char buf[128]; + av_get_channel_layout_string(buf, sizeof(buf), -1, layout); + av_log(s, AV_LOG_VERBOSE, "Treating %s as mono\n", buf); + return AV_CH_FRONT_CENTER; + } + + return layout; +} + +static int sane_layout(int64_t layout){ + if(!(layout & AV_CH_LAYOUT_SURROUND)) // at least 1 front speaker + return 0; + if(!even(layout & (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT))) // no asymetric front + return 0; + if(!even(layout & (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT))) // no asymetric side + return 0; + if(!even(layout & (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT))) + return 0; + if(!even(layout & (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER))) + return 0; + if(av_get_channel_layout_nb_channels(layout) >= SWR_CH_MAX) + return 0; + + return 1; +} + +av_cold static int auto_matrix(SwrContext *s) +{ + int i, j, out_i; + double matrix[64][64]={{0}}; + int64_t unaccounted, in_ch_layout, out_ch_layout; + double maxcoef=0; + char buf[128]; + const int matrix_encoding = s->matrix_encoding; + + in_ch_layout = clean_layout(s, s->in_ch_layout); + if(!sane_layout(in_ch_layout)){ + av_get_channel_layout_string(buf, sizeof(buf), -1, s->in_ch_layout); + av_log(s, AV_LOG_ERROR, "Input channel layout '%s' is not supported\n", buf); + return AVERROR(EINVAL); + } + + out_ch_layout = clean_layout(s, s->out_ch_layout); + if(!sane_layout(out_ch_layout)){ + av_get_channel_layout_string(buf, sizeof(buf), -1, s->out_ch_layout); + av_log(s, AV_LOG_ERROR, "Output channel layout '%s' is not supported\n", buf); + return AVERROR(EINVAL); + } + + memset(s->matrix, 0, sizeof(s->matrix)); + for(i=0; i<64; i++){ + if(in_ch_layout & out_ch_layout & (1ULL<<i)) + matrix[i][i]= 1.0; + } + + unaccounted= in_ch_layout & ~out_ch_layout; + +//FIXME implement dolby surround +//FIXME implement full ac3 + + + if(unaccounted & AV_CH_FRONT_CENTER){ + if((out_ch_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO){ + if(in_ch_layout & AV_CH_LAYOUT_STEREO) { + matrix[ FRONT_LEFT][FRONT_CENTER]+= s->clev; + matrix[FRONT_RIGHT][FRONT_CENTER]+= s->clev; + } 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(out_ch_layout & AV_CH_FRONT_CENTER){ + matrix[FRONT_CENTER][ FRONT_LEFT]+= M_SQRT1_2; + matrix[FRONT_CENTER][FRONT_RIGHT]+= M_SQRT1_2; + if(in_ch_layout & AV_CH_FRONT_CENTER) + matrix[FRONT_CENTER][ FRONT_CENTER] = s->clev*sqrt(2); + }else + av_assert0(0); + } + + if(unaccounted & AV_CH_BACK_CENTER){ + if(out_ch_layout & AV_CH_BACK_LEFT){ + matrix[ BACK_LEFT][BACK_CENTER]+= M_SQRT1_2; + matrix[BACK_RIGHT][BACK_CENTER]+= M_SQRT1_2; + }else if(out_ch_layout & AV_CH_SIDE_LEFT){ + matrix[ SIDE_LEFT][BACK_CENTER]+= M_SQRT1_2; + matrix[SIDE_RIGHT][BACK_CENTER]+= M_SQRT1_2; + }else if(out_ch_layout & AV_CH_FRONT_LEFT){ + 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] -= s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][BACK_CENTER] += s->slev * M_SQRT1_2; + } else { + matrix[FRONT_LEFT ][BACK_CENTER] -= s->slev; + matrix[FRONT_RIGHT][BACK_CENTER] += s->slev; + } + } else { + matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*M_SQRT1_2; + matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2; + } + }else if(out_ch_layout & AV_CH_FRONT_CENTER){ + matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2; + }else + av_assert0(0); + } + if(unaccounted & AV_CH_BACK_LEFT){ + if(out_ch_layout & AV_CH_BACK_CENTER){ + matrix[BACK_CENTER][ BACK_LEFT]+= M_SQRT1_2; + matrix[BACK_CENTER][BACK_RIGHT]+= M_SQRT1_2; + }else if(out_ch_layout & AV_CH_SIDE_LEFT){ + if(in_ch_layout & AV_CH_SIDE_LEFT){ + 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(out_ch_layout & AV_CH_FRONT_LEFT){ + if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) { + matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * M_SQRT1_2; + matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * M_SQRT1_2; + } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) { + matrix[FRONT_LEFT ][BACK_LEFT ] -= s->slev * SQRT3_2; + matrix[FRONT_LEFT ][BACK_RIGHT] -= s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][BACK_LEFT ] += s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev * SQRT3_2; + } else { + matrix[ FRONT_LEFT][ BACK_LEFT] += s->slev; + matrix[FRONT_RIGHT][BACK_RIGHT] += s->slev; + } + }else if(out_ch_layout & AV_CH_FRONT_CENTER){ + matrix[ FRONT_CENTER][BACK_LEFT ]+= s->slev*M_SQRT1_2; + matrix[ FRONT_CENTER][BACK_RIGHT]+= s->slev*M_SQRT1_2; + }else + av_assert0(0); + } + + if(unaccounted & AV_CH_SIDE_LEFT){ + if(out_ch_layout & AV_CH_BACK_LEFT){ + /* if back channels do not exist in the input, just copy side + channels to back channels, otherwise mix side into back */ + if (in_ch_layout & AV_CH_BACK_LEFT) { + 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(out_ch_layout & AV_CH_BACK_CENTER){ + matrix[BACK_CENTER][ SIDE_LEFT]+= M_SQRT1_2; + matrix[BACK_CENTER][SIDE_RIGHT]+= M_SQRT1_2; + }else if(out_ch_layout & AV_CH_FRONT_LEFT){ + if (matrix_encoding == AV_MATRIX_ENCODING_DOLBY) { + matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * M_SQRT1_2; + matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * M_SQRT1_2; + } else if (matrix_encoding == AV_MATRIX_ENCODING_DPLII) { + matrix[FRONT_LEFT ][SIDE_LEFT ] -= s->slev * SQRT3_2; + matrix[FRONT_LEFT ][SIDE_RIGHT] -= s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][SIDE_LEFT ] += s->slev * M_SQRT1_2; + matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev * SQRT3_2; + } else { + matrix[ FRONT_LEFT][ SIDE_LEFT] += s->slev; + matrix[FRONT_RIGHT][SIDE_RIGHT] += s->slev; + } + }else if(out_ch_layout & AV_CH_FRONT_CENTER){ + matrix[ FRONT_CENTER][SIDE_LEFT ]+= s->slev*M_SQRT1_2; + matrix[ FRONT_CENTER][SIDE_RIGHT]+= s->slev*M_SQRT1_2; + }else + av_assert0(0); + } + + if(unaccounted & AV_CH_FRONT_LEFT_OF_CENTER){ + if(out_ch_layout & AV_CH_FRONT_LEFT){ + matrix[ FRONT_LEFT][ FRONT_LEFT_OF_CENTER]+= 1.0; + matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER]+= 1.0; + }else if(out_ch_layout & AV_CH_FRONT_CENTER){ + matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= M_SQRT1_2; + matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= M_SQRT1_2; + }else + av_assert0(0); + } + /* mix LFE into front left/right or center */ + if (unaccounted & AV_CH_LOW_FREQUENCY) { + if (out_ch_layout & AV_CH_FRONT_CENTER) { + matrix[FRONT_CENTER][LOW_FREQUENCY] += s->lfe_mix_level; + } else if (out_ch_layout & AV_CH_FRONT_LEFT) { + matrix[FRONT_LEFT ][LOW_FREQUENCY] += s->lfe_mix_level * M_SQRT1_2; + matrix[FRONT_RIGHT][LOW_FREQUENCY] += s->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; + for(j=0; j<64; j++){ + s->matrix[out_i][in_i]= matrix[i][j]; + if(matrix[i][j]){ + sum += fabs(matrix[i][j]); + } + if(in_ch_layout & (1ULL<<j)) + in_i++; + } + maxcoef= FFMAX(maxcoef, sum); + if(out_ch_layout & (1ULL<<i)) + out_i++; + } + if(s->rematrix_volume < 0) + maxcoef = -s->rematrix_volume; + + 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) && maxcoef > 1.0){ + for(i=0; i<SWR_CH_MAX; i++) + for(j=0; j<SWR_CH_MAX; j++){ + s->matrix[i][j] /= maxcoef; + } + } + + if(s->rematrix_volume > 0){ + for(i=0; i<SWR_CH_MAX; i++) + for(j=0; j<SWR_CH_MAX; j++){ + s->matrix[i][j] *= s->rematrix_volume; + } + } + + for(i=0; i<av_get_channel_layout_nb_channels(out_ch_layout); i++){ + for(j=0; j<av_get_channel_layout_nb_channels(in_ch_layout); j++){ + av_log(NULL, AV_LOG_DEBUG, "%f ", s->matrix[i][j]); + } + av_log(NULL, AV_LOG_DEBUG, "\n"); + } + return 0; +} + +av_cold int swri_rematrix_init(SwrContext *s){ + int i, j; + int nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout); + int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout); + + 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){ + s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int)); + s->native_one = av_mallocz(sizeof(int)); + for (i = 0; i < nb_out; i++) + for (j = 0; j < nb_in; j++) + ((int*)s->native_matrix)[i * nb_in + j] = lrintf(s->matrix[i][j] * 32768); + *((int*)s->native_one) = 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 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)); + 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)); + 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 + 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(HAVE_YASM && HAVE_MMX) swri_rematrix_init_x86(s); + + 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); +} + +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(out->ch_count == av_get_channel_layout_nb_channels(s->out_ch_layout)); + av_assert0(in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout)); + + 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[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; +} |