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swr: replace sqrt(0.5) by M_SQRT1_2 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-09-19 08:44:24 +02:00
parent a5f8aace89
commit 1133676f4a
1 changed files with 23 additions and 23 deletions
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46
libswresample/rematrix.c
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@ -101,15 +101,15 @@ int swr_rematrix_init(SwrContext *s){
if(unaccounted & AV_CH_FRONT_CENTER){
if((s->out_ch_layout & AV_CH_LAYOUT_STEREO) == AV_CH_LAYOUT_STEREO){
matrix[ FRONT_LEFT][FRONT_CENTER]+= sqrt(0.5);
matrix[FRONT_RIGHT][FRONT_CENTER]+= sqrt(0.5);
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(s->out_ch_layout & AV_CH_FRONT_CENTER){
matrix[FRONT_CENTER][ FRONT_LEFT]+= sqrt(0.5);
matrix[FRONT_CENTER][FRONT_RIGHT]+= sqrt(0.5);
matrix[FRONT_CENTER][ FRONT_LEFT]+= M_SQRT1_2;
matrix[FRONT_CENTER][FRONT_RIGHT]+= M_SQRT1_2;
if(s->in_ch_layout & AV_CH_FRONT_CENTER)
matrix[FRONT_CENTER][ FRONT_CENTER] = s->clev*sqrt(2);
}else
@ -118,27 +118,27 @@ int swr_rematrix_init(SwrContext *s){
if(unaccounted & AV_CH_BACK_CENTER){
if(s->out_ch_layout & AV_CH_BACK_LEFT){
matrix[ BACK_LEFT][BACK_CENTER]+= sqrt(0.5);
matrix[BACK_RIGHT][BACK_CENTER]+= sqrt(0.5);
matrix[ BACK_LEFT][BACK_CENTER]+= M_SQRT1_2;
matrix[BACK_RIGHT][BACK_CENTER]+= M_SQRT1_2;
}else if(s->out_ch_layout & AV_CH_SIDE_LEFT){
matrix[ SIDE_LEFT][BACK_CENTER]+= sqrt(0.5);
matrix[SIDE_RIGHT][BACK_CENTER]+= sqrt(0.5);
matrix[ SIDE_LEFT][BACK_CENTER]+= M_SQRT1_2;
matrix[SIDE_RIGHT][BACK_CENTER]+= M_SQRT1_2;
}else if(s->out_ch_layout & AV_CH_FRONT_LEFT){
matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*sqrt(0.5);
matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*sqrt(0.5);
matrix[ FRONT_LEFT][BACK_CENTER]+= s->slev*M_SQRT1_2;
matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2;
}else if(s->out_ch_layout & AV_CH_FRONT_CENTER){
matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*sqrt(0.5);
matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2;
}else
av_assert0(0);
}
if(unaccounted & AV_CH_BACK_LEFT){
if(s->out_ch_layout & AV_CH_BACK_CENTER){
matrix[BACK_CENTER][ BACK_LEFT]+= sqrt(0.5);
matrix[BACK_CENTER][BACK_RIGHT]+= sqrt(0.5);
matrix[BACK_CENTER][ BACK_LEFT]+= M_SQRT1_2;
matrix[BACK_CENTER][BACK_RIGHT]+= M_SQRT1_2;
}else if(s->out_ch_layout & AV_CH_SIDE_LEFT){
if(s->in_ch_layout & AV_CH_SIDE_LEFT){
matrix[ SIDE_LEFT][ BACK_LEFT]+= sqrt(0.5);
matrix[SIDE_RIGHT][BACK_RIGHT]+= sqrt(0.5);
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;
@ -147,8 +147,8 @@ int swr_rematrix_init(SwrContext *s){
matrix[ FRONT_LEFT][ BACK_LEFT]+= s->slev;
matrix[FRONT_RIGHT][BACK_RIGHT]+= s->slev;
}else if(s->out_ch_layout & AV_CH_FRONT_CENTER){
matrix[ FRONT_CENTER][BACK_LEFT ]+= s->slev*sqrt(0.5);
matrix[ FRONT_CENTER][BACK_RIGHT]+= s->slev*sqrt(0.5);
matrix[ FRONT_CENTER][BACK_LEFT ]+= s->slev*M_SQRT1_2;
matrix[ FRONT_CENTER][BACK_RIGHT]+= s->slev*M_SQRT1_2;
}else
av_assert0(0);
}
@ -158,14 +158,14 @@ int swr_rematrix_init(SwrContext *s){
matrix[ BACK_LEFT][ SIDE_LEFT]+= 1.0;
matrix[BACK_RIGHT][SIDE_RIGHT]+= 1.0;
}else if(s->out_ch_layout & AV_CH_BACK_CENTER){
matrix[BACK_CENTER][ SIDE_LEFT]+= sqrt(0.5);
matrix[BACK_CENTER][SIDE_RIGHT]+= sqrt(0.5);
matrix[BACK_CENTER][ SIDE_LEFT]+= M_SQRT1_2;
matrix[BACK_CENTER][SIDE_RIGHT]+= M_SQRT1_2;
}else if(s->out_ch_layout & AV_CH_FRONT_LEFT){
matrix[ FRONT_LEFT][ SIDE_LEFT]+= s->slev;
matrix[FRONT_RIGHT][SIDE_RIGHT]+= s->slev;
}else if(s->out_ch_layout & AV_CH_FRONT_CENTER){
matrix[ FRONT_CENTER][SIDE_LEFT ]+= s->slev*sqrt(0.5);
matrix[ FRONT_CENTER][SIDE_RIGHT]+= s->slev*sqrt(0.5);
matrix[ FRONT_CENTER][SIDE_LEFT ]+= s->slev*M_SQRT1_2;
matrix[ FRONT_CENTER][SIDE_RIGHT]+= s->slev*M_SQRT1_2;
}else
av_assert0(0);
}
@ -175,8 +175,8 @@ int swr_rematrix_init(SwrContext *s){
matrix[ FRONT_LEFT][ FRONT_LEFT_OF_CENTER]+= 1.0;
matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER]+= 1.0;
}else if(s->out_ch_layout & AV_CH_FRONT_CENTER){
matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= sqrt(0.5);
matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= sqrt(0.5);
matrix[ FRONT_CENTER][ FRONT_LEFT_OF_CENTER]+= M_SQRT1_2;
matrix[ FRONT_CENTER][FRONT_RIGHT_OF_CENTER]+= M_SQRT1_2;
}else
av_assert0(0);
}