swr: minor simplification for the noise shaping pos update

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago · b5d9e5d06c
parent f9eed5d7e6
commit b5d9e5d06c
1 changed files with 1 additions and 1 deletions
--- a/libswresample/dither_template.c
+++ b/libswresample/dither_template.c
@ -38,7 +38,7 @@ void RENAME(swri_noise_shaping)(SwrContext *s, AudioData *dsts, const AudioData
            double d1, d = src[i]*S_1;
            for(j=0; j<taps; j++)
                d -= s->dither.ns_coeffs[j] * s->dither.ns_errors[ch][pos + j];
-            pos = pos ? pos - 1 : pos - 1 + taps;
+            pos = pos ? pos - 1 : taps - 1;
            d1 = rint(d + noise[i]);
            s->dither.ns_errors[ch][pos + taps] = s->dither.ns_errors[ch][pos] = d1 - d;
            d1 *= S;