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swresample: allow double precision beta value for the Kaiser window

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Kaiser windows inherently don't require beta to be an integer. This was
an arbitrary restriction. Moreover, soxr does not require it, and in
fact often estimates beta to a non-integral value.

Thus, this patch allows greater flexibility for swresample clients.
Micro version is updated.

Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde
2015-11-07 10:16:27 -05:00
parent 9ac61e73d0
commit 1bed09a30e
7 changed files with 9 additions and 9 deletions
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4
libswresample/resample.c
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@@ -71,7 +71,7 @@ static double bessel(double x){
* @return 0 on success, negative on error
*/
static int build_filter(ResampleContext *c, void *filter, double factor, int tap_count, int alloc, int phase_count, int scale,
int filter_type, int kaiser_beta){
int filter_type, double kaiser_beta){
int ph, i;
double x, y, w, t;
double *tab = av_malloc_array(tap_count+1, sizeof(*tab));
@@ -212,7 +212,7 @@ static int build_filter(ResampleContext *c, void *filter, double factor, int tap
}
static ResampleContext *resample_init(ResampleContext *c, int out_rate, int in_rate, int filter_size, int phase_shift, int linear,
double cutoff0, enum AVSampleFormat format, enum SwrFilterType filter_type, int kaiser_beta,
double cutoff0, enum AVSampleFormat format, enum SwrFilterType filter_type, double kaiser_beta,
double precision, int cheby)
{
double cutoff = cutoff0? cutoff0 : 0.97;