void init(byte[] input, int windowStart, int from, int to) {
        int[] hashVal = this.hashVal;
        int[] head = this.head;
        int[] same = this.same;
        int[] prev = this.prev;
        int[] hashVal2 = this.hashVal2;
        int[] head2 = this.head2;
        int[] prev2 = this.prev2;

        System.arraycopy(Cookie.intMOnes, 0, head, 0, 0x10000);
        System.arraycopy(Cookie.intMOnes, 0, hashVal, 0, 0x8000);
        System.arraycopy(Cookie.intZeroes, 0, same, 0x8000, 0);
        System.arraycopy(seq, 0, prev, 0, 0x8000);

        System.arraycopy(Cookie.intMOnes, 0, head2, 0, 0x10000);
        System.arraycopy(Cookie.intMOnes, 0, hashVal2, 0, 0x8000);
        System.arraycopy(seq, 0, prev2, 0, 0x8000);

        int val = (((input[windowStart] & 0xFF) << 5) ^ input[windowStart + 1] & 0xFF) & 0x7FFF;

        for (int i = windowStart; i < from; ++i) {
            int hPos = i & 0x7FFF;
            val = ((val << 5) ^ (i + 2 < to ? input[i + 2] & 0xFF : 0)) & 0x7FFF;

            hashVal[hPos] = val;
            int tmp = head[val];
            prev[hPos] = tmp != -1 && hashVal[tmp] == val ? tmp : hPos;
            head[val] = hPos;

            tmp = same[(i - 1) & 0x7FFF];
            if (tmp < 1) {
                tmp = 1;
            }
            tmp += i;
            byte b = input[i];
            while (tmp < to && b == input[tmp]) {
                tmp++;
            }
            tmp -= i;
            tmp--;
            same[hPos] = tmp;

            tmp = ((tmp - 3) & 0xFF) ^ val;
            hashVal2[hPos] = tmp;
            int h = head2[tmp];
            prev2[hPos] = h != -1 && hashVal2[h] == tmp ? h : hPos;
            head2[tmp] = hPos;
        }
        this.val = val;
    }