CHN_F_DIRTY
c->flags |= CHN_F_DIRTY;
c->flags |= CHN_F_DIRTY;
if (CHN_STOPPED(ch) || (ch->flags & CHN_F_DIRTY)) {
c->flags &= ~CHN_F_DIRTY;
if (CHN_STOPPED(ch) || (ch->flags & CHN_F_DIRTY)) {
c->flags &= ~CHN_F_DIRTY;
c->flags |= CHN_F_DIRTY;
c->flags |= CHN_F_DIRTY;
c->flags &= ~(CHN_F_DIRTY | CHN_F_PASSTHROUGH);
c->flags |= CHN_F_DIRTY;
(((c)->flags & CHN_F_VIRTUAL) && (((c)->flags & CHN_F_DIRTY) || \