HDAA_CHN_RUNNING
if ((ch->flags & HDAA_CHN_RUNNING) == 0)
ch->flags &= ~HDAA_CHN_RUNNING;
ch->flags |= HDAA_CHN_RUNNING;
if (devinfo->chans[i].flags & HDAA_CHN_RUNNING) {
if (!(ch->flags & HDAA_CHN_RUNNING))