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rematrix: add parameter to tune volume 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-10-26 00:44:35 +02:00
parent b1470d7a60
commit 2f86566a31
3 changed files with 15 additions and 2 deletions
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12
libswresample/rematrix.c
View File

@ -210,6 +210,9 @@ int swr_rematrix_init(SwrContext *s){
if(s->out_ch_layout & (1ULL<<i))
out_i++;
}
if(s->rematrix_volume < 0)
maxcoef = -s->rematrix_volume;
if(( s->out_sample_fmt < AV_SAMPLE_FMT_FLT
|| s->int_sample_fmt < AV_SAMPLE_FMT_FLT) && maxcoef > 1.0){
for(i=0; i<SWR_CH_MAX; i++)
@ -218,6 +221,15 @@ int swr_rematrix_init(SwrContext *s){
s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
}
}
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;
s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
}
}
for(i=0; i<av_get_channel_layout_nb_channels(s->out_ch_layout); i++){
for(j=0; j<av_get_channel_layout_nb_channels(s->in_ch_layout); j++){
av_log(NULL, AV_LOG_DEBUG, "%f ", s->matrix[i][j]);

3
libswresample/swresample.c
View File

@ -49,6 +49,7 @@ static const AVOption options[]={
{"ocl", "output channel layout", OFFSET(out_ch_layout), AV_OPT_TYPE_INT64, {.dbl=0}, 0, INT64_MAX, 0, "channel_layout"},
{"clev", "center mix level" , OFFSET(clev) , AV_OPT_TYPE_FLOAT, {.dbl=C_30DB}, 0, 4, 0},
{"slev", "sourround mix level" , OFFSET(slev) , AV_OPT_TYPE_FLOAT, {.dbl=C_30DB}, 0, 4, 0},
{"rmvol", "rematrix volume" , OFFSET(rematrix_volume), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, -1000, 1000, 0},
{"flags", NULL , OFFSET(flags) , AV_OPT_TYPE_FLAGS, {.dbl=0}, 0, UINT_MAX, 0, "flags"},
{"res", "force resampling", 0, AV_OPT_TYPE_CONST, {.dbl=SWR_FLAG_RESAMPLE}, INT_MIN, INT_MAX, 0, "flags"},
@ -176,7 +177,7 @@ int swr_init(SwrContext *s){
if(!s->out_ch_layout)
s->out_ch_layout= av_get_default_channel_layout(s->out.ch_count);
s->rematrix= s->out_ch_layout !=s->in_ch_layout;
s->rematrix= s->out_ch_layout !=s->in_ch_layout || s->rematrix_volume!=1.0;
#define RSC 1 //FIXME finetune
if(!s-> in.ch_count)

2
libswresample/swresample_internal.h
View File

@ -44,7 +44,7 @@ typedef struct SwrContext { //FIXME find unused fields
int in_sample_rate;
int out_sample_rate;
int flags;
float slev, clev;
float slev, clev, rematrix_volume;
//below are private
int int_bps;