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-rw-r--r--libswresample/rematrix.c48
1 files changed, 42 insertions, 6 deletions
diff --git a/libswresample/rematrix.c b/libswresample/rematrix.c
index 7652fd8a32..8284e5c692 100644
--- a/libswresample/rematrix.c
+++ b/libswresample/rematrix.c
@@ -126,6 +126,7 @@ static int auto_matrix(SwrContext *s)
int64_t unaccounted= s->in_ch_layout & ~s->out_ch_layout;
double maxcoef=0;
char buf[128];
+ const int matrix_encoding = s->matrix_encoding;
memset(s->matrix, 0, sizeof(s->matrix));
for(i=0; i<64; i++){
@@ -178,8 +179,19 @@ static int auto_matrix(SwrContext *s)
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*M_SQRT1_2;
- matrix[FRONT_RIGHT][BACK_CENTER]+= s->slev*M_SQRT1_2;
+ 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(s->out_ch_layout & AV_CH_FRONT_CENTER){
matrix[ FRONT_CENTER][BACK_CENTER]+= s->slev*M_SQRT1_2;
}else
@@ -198,8 +210,20 @@ static int auto_matrix(SwrContext *s)
matrix[SIDE_RIGHT][BACK_RIGHT]+= 1.0;
}
}else if(s->out_ch_layout & AV_CH_FRONT_LEFT){
- matrix[ FRONT_LEFT][ BACK_LEFT]+= s->slev;
- matrix[FRONT_RIGHT][BACK_RIGHT]+= s->slev;
+ 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(s->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;
@@ -222,8 +246,20 @@ static int auto_matrix(SwrContext *s)
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;
+ 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(s->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;