diff options
| -rw-r--r-- | libswresample/resample.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libswresample/resample.c b/libswresample/resample.c index d0a406e5e4..c5ee62d842 100644 --- a/libswresample/resample.c +++ b/libswresample/resample.c @@ -180,8 +180,8 @@ static int build_filter(ResampleContext *c, void *filter, double factor, int tap else y= d*(-4 + 8*x - 5*x*x + x*x*x); break;} case SWR_FILTER_TYPE_BLACKMAN_NUTTALL: - w = 2.0*x / (factor*tap_count) + M_PI; - t = cos(w); + w = 2.0*x / (factor*tap_count); + t = -cos(w); y *= 0.3635819 - 0.4891775 * t + 0.1365995 * (2*t*t-1) - 0.0106411 * (4*t*t*t - 3*t); break; case SWR_FILTER_TYPE_KAISER: |