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swr: add double precision support to the rematrix code

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-05-02 00:50:00 +02:00
parent 71a1f76d3c
commit f2e799a3d0
2 changed files with 33 additions and 2 deletions
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30
libswresample/rematrix.c
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@ -34,6 +34,18 @@
#undef ONE
#undef COEFF
#define ONE (1.0)
#define R(x) x
#define SAMPLE double
#define COEFF double
#define RENAME(x) x ## _double
#include "rematrix_template.c"
#undef SAMPLE
#undef RENAME
#undef R
#undef ONE
#undef COEFF
#define ONE (-32768)
#define R(x) (((x) + 16384)>>15)
#define SAMPLE int16_t
@ -297,6 +309,15 @@ int swri_rematrix_init(SwrContext *s){
*((float*)s->native_one) = 1.0;
s->mix_1_1_f = copy_float;
s->mix_2_1_f = sum2_float;
}else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){
s->native_matrix = av_mallocz(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 = copy_double;
s->mix_2_1_f = sum2_double;
}else
av_assert0(0);
//FIXME quantize for integeres
@ -353,6 +374,15 @@ int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mus
}
((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;

5
libswresample/swresample.c
View File

@ -216,8 +216,9 @@ int swr_init(struct SwrContext *s){
if( s->int_sample_fmt != AV_SAMPLE_FMT_S16P
&&s->int_sample_fmt != AV_SAMPLE_FMT_S32P
&&s->int_sample_fmt != AV_SAMPLE_FMT_FLTP){
av_log(s, AV_LOG_ERROR, "Requested sample format %s is not supported internally, S16/S32/FLT is supported\n", av_get_sample_fmt_name(s->int_sample_fmt));
&&s->int_sample_fmt != AV_SAMPLE_FMT_FLTP
&&s->int_sample_fmt != AV_SAMPLE_FMT_DBLP){
av_log(s, AV_LOG_ERROR, "Requested sample format %s is not supported internally, S16/S32/FLT/DBL is supported\n", av_get_sample_fmt_name(s->int_sample_fmt));
return AVERROR(EINVAL);
}