CHECK_ERROR(!st->d, 0, free_state)
st->channels = channels;
errcode = ebur128_init_channel_map(st);
CHECK_ERROR(errcode, 0, free_internal)
st->d->sample_peak =
CHECK_ERROR(!st->d, 0, free_state)
st->channels = channels;
errcode = ebur128_init_channel_map(st);
CHECK_ERROR(errcode, 0, free_internal)
st->d->sample_peak =