in subprojects/speex/resample.c [1154:1164]
EXPORT int speex_resampler_set_quality(SpeexResamplerState *st, int quality)
{
if (quality > 10 || quality < 0)
return RESAMPLER_ERR_INVALID_ARG;
if (st->quality == quality)
return RESAMPLER_ERR_SUCCESS;
st->quality = quality;
if (st->initialised)
return update_filter(st);
return RESAMPLER_ERR_SUCCESS;
}