Custody question?

So my son and unborn babies dad has been charged with assault and charged with weapon and causing mischeif, he has threatened to kill the baby in my stomach and to break our sons neck and was breaking everything in the house and waving a knife at us and a huge metal wrench, he was also drunk (been drinking since he woke up before us, so he was drunk when me and baby woke up) and now he can't come near us until the court decides whats gonna happen with him and the babies, I do not feel safe at all to even let him have visitation rights so i want to apply for a parenting order.. which I have to wait til after the holidays.. anyways I have planned to give up my unborn for adoption and have everything set and the family is nice and really want this as well, I'm very certain with this decision, have been for months, if I do this, will the dad still have a right to say I can't do it? Can he stop me from giving away the baby he threatened to kill? My reason for it is clear, he just threatened us and I don't want to put her through it as me and my son are still having a hard time coping with it.. anyways some advice would be helpful, I tried Google but it only shows the laws in the u.s and barely any information about the Canadian laws on this topic.. thanks in advance