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resampler: avoid some multiplies when we can

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This commit is contained in:
Wim Taymans 2009-08-19 20:47:48 +02:00
parent aeae567f88
commit 3cc1278dcf
1 changed files with 7 additions and 2 deletions
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9
src/pulsecore/resampler.c
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@ -1122,8 +1122,13 @@ static void remap_channels_matrix (pa_resampler *r, void *dst, const void *src,
d = (float *)dst + oc;
s = (float *)src + ic;
for (i = n; i > 0; i--, s += n_ic, d += n_oc)
*d += *s * vol;
if (vol >= 1.0) {
for (i = n; i > 0; i--, s += n_ic, d += n_oc)
*d += *s;
} else {
for (i = n; i > 0; i--, s += n_ic, d += n_oc)
*d += *s * vol;
}
}
}