public DeflaterEngine(DeflaterPending pending)
{
this.pending = pending;
this.huffman = new DeflaterHuffman(pending);
this.adler = new Adler32();
this.window = new byte[0x10000];
this.head = new short[0x8000];
this.prev = new short[0x8000];
this.blockStart = this.strstart = 1;
}
public void WriteTree(DeflaterHuffman.Tree blTree)
{
int code = -1;
int index = 0;
while (index < this.numCodes)
{
int num;
int num2;
int num3 = 1;
int num6 = this.length[index];
if (num6 == 0)
{
num = 0x8a;
num2 = 3;
}
else
{
num = 6;
num2 = 3;
if (code != num6)
{
blTree.WriteSymbol(num6);
num3 = 0;
}
}
code = num6;
index++;
while ((index < this.numCodes) && (code == this.length[index]))
{
index++;
if (++num3 >= num)
{
break;
}
}
if (num3 < num2)
{
while (num3-- > 0)
{
blTree.WriteSymbol(code);
}
}
else if (code != 0)
{
blTree.WriteSymbol(DeflaterHuffman.REP_3_6);
this.dh.pending.WriteBits(num3 - 3, 2);
}
else
{
if (num3 <= 10)
{
blTree.WriteSymbol(DeflaterHuffman.REP_3_10);
this.dh.pending.WriteBits(num3 - 3, 3);
continue;
}
blTree.WriteSymbol(DeflaterHuffman.REP_11_138);
this.dh.pending.WriteBits(num3 - 11, 7);
}
}
}
public void CalcBLFreq(DeflaterHuffman.Tree blTree)
{
int num4 = -1;
int index = 0;
while (index < this.numCodes)
{
int num;
int num2;
int num3 = 1;
int num6 = this.length[index];
if (num6 == 0)
{
num = 0x8a;
num2 = 3;
}
else
{
num = 6;
num2 = 3;
if (num4 != num6)
{
short[] numArray;
IntPtr ptr;
(numArray = blTree.freqs)[(int) (ptr = (IntPtr) num6)] = (short) (numArray[(int) ptr] + 1);
num3 = 0;
}
}
num4 = num6;
index++;
while ((index < this.numCodes) && (num4 == this.length[index]))
{
index++;
if (++num3 >= num)
{
break;
}
}
if (num3 < num2)
{
short[] numArray2;
IntPtr ptr2;
(numArray2 = blTree.freqs)[(int) (ptr2 = (IntPtr) num4)] = (short) (numArray2[(int) ptr2] + ((short) num3));
}
else
{
short[] numArray5;
IntPtr ptr5;
if (num4 != 0)
{
short[] numArray3;
IntPtr ptr3;
(numArray3 = blTree.freqs)[(int) (ptr3 = (IntPtr) DeflaterHuffman.REP_3_6)] = (short) (numArray3[(int) ptr3] + 1);
continue;
}
if (num3 <= 10)
{
short[] numArray4;
IntPtr ptr4;
(numArray4 = blTree.freqs)[(int) (ptr4 = (IntPtr) DeflaterHuffman.REP_3_10)] = (short) (numArray4[(int) ptr4] + 1);
continue;
}
(numArray5 = blTree.freqs)[(int) (ptr5 = (IntPtr) DeflaterHuffman.REP_11_138)] = (short) (numArray5[(int) ptr5] + 1);
}
}
}
public Tree(DeflaterHuffman dh, int elems, int minCodes, int maxLength)
{
this.dh = dh;
this.minNumCodes = minCodes;
this.maxLength = maxLength;
this.freqs = new short[elems];
this.bl_counts = new int[maxLength];
}
