csvorbis.CodeBook.decode C# (CSharp) Method

        internal int decode(csBuffer b)
        {
            int ptr=0;
            DecodeAux t=decode_tree;
            int lok=b.look(t.tabn);
            //System.err.println(this+" "+t+" lok="+lok+", tabn="+t.tabn);

            if(lok>=0)
            {
                ptr=t.tab[lok];
                b.adv(t.tabl[lok]);
                if(ptr<=0)
                {
                    return -ptr;
                }
            }
            do
            {
                switch(b.read1())
                {
                    case 0:
                        ptr=t.ptr0[ptr];
                        break;
                    case 1:
                        ptr=t.ptr1[ptr];
                        break;
                    case -1:
                    default:
                        return(-1);
                }
            }
            while(ptr>0);
            return(-ptr);
        }