SD_F_VPC
if (!PCM_REGISTERED(d) || !(pcm_getflags(d->dev) & SD_F_VPC))
(((d->flags & SD_F_VPC) && !(c->flags & CHN_F_HAS_VCHAN)) ||
(!(d->flags & SD_F_VPC) && (d->flags & SD_F_SOFTPCMVOL) &&
if (mixer_bypass != 0 && (d->flags & SD_F_VPC))
d->flags |= SD_F_VPC;