diff options
Diffstat (limited to 'libavcodec/iirfilter.c')
| -rw-r--r-- | libavcodec/iirfilter.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/libavcodec/iirfilter.c b/libavcodec/iirfilter.c index 832559cfea..46b4973f85 100644 --- a/libavcodec/iirfilter.c +++ b/libavcodec/iirfilter.c @@ -137,15 +137,15 @@ static int biquad_init_coeffs(void *avc, struct FFIIRFilterCoeffs *c, if (filt_mode == FF_FILTER_MODE_HIGHPASS) { c->gain = ((1.0 + cos_w0) / 2.0) / a0; - x0 = (-(1.0 + cos_w0)) / a0; - x1 = ((1.0 + cos_w0) / 2.0) / a0; + x0 = ((1.0 + cos_w0) / 2.0) / a0; + x1 = (-(1.0 + cos_w0)) / a0; } else { // FF_FILTER_MODE_LOWPASS c->gain = ((1.0 - cos_w0) / 2.0) / a0; - x0 = (1.0 - cos_w0) / a0; - x1 = ((1.0 - cos_w0) / 2.0) / a0; + x0 = ((1.0 - cos_w0) / 2.0) / a0; + x1 = (1.0 - cos_w0) / a0; } - c->cy[0] = (2.0 * cos_w0) / a0; - c->cy[1] = (-1.0 + (sin_w0 / 2.0)) / a0; + c->cy[0] = (-1.0 + (sin_w0 / 2.0)) / a0; + c->cy[1] = (2.0 * cos_w0) / a0; // divide by gain to make the x coeffs integers. // during filtering, the delay state will include the gain multiplication |