public void DoWork()
{
while (true)
{
ewhStart.WaitOne();
if (m_Command == 0) // encode
{
Huffman.Encode(ref m_aIn, out m_aOut);
}
else if (m_Command == 1) // decode
{
Huffman.Decode(ref m_aIn, out m_aOut);
}
else
{
ewhStop.Set();
break;
}
ewhStop.Set();
}
}
public void Encode(ref byte[] pBufIn, out byte[] pBufOut)
{
if (pBufIn.Length < 1024 * 1024)
{
byte[] pOut = null;
Huffman.Encode(ref pBufIn, out pOut);
pBufOut = new byte[pOut.Length + 1];
pBufOut[0] = 0;
pOut.CopyTo(pBufOut, 1);
return;
}
// === start threads ===
Start();
// =====================
pBufOut = null;
int i, j;
int PieSize = pBufIn.Length / m_ProcessCount;
int StartIndex = 0;
int EndIndex = 0;
byte[][] aIn = new byte[m_ProcessCount][];
for (i = 0; i < m_ProcessCount; i++)
{
EndIndex = StartIndex + PieSize;
if (EndIndex >= pBufIn.Length)
{
EndIndex = pBufIn.Length - 1;
}
aIn[i] = new byte[EndIndex - StartIndex + 1];
for (j = 0; j < aIn[i].Length; j++)
{
aIn[i][j] = pBufIn[j + StartIndex];
}
StartIndex = EndIndex + 1;
}
for (i = 0; i < m_ProcessCount; i++)
{
m_threadRoutine[i].ArrayIn = aIn[i];
m_threadRoutine[i].m_Command = 0;
m_threadRoutine[i].ewhStart.Set();
}
int outSize = 0;
for (i = 0; i < m_ProcessCount; i++)
{
m_threadRoutine[i].ewhStop.WaitOne();
outSize += m_threadRoutine[i].ArrayOut.Length;
outSize += sizeof(int);
}
outSize++;
pBufOut = new byte[outSize];
pBufOut[0] = Convert.ToByte(m_ProcessCount);
StartIndex = 1;
for (i = 0; i < m_ProcessCount; i++)
{
byte[] aOut = m_threadRoutine[i].ArrayOut;
byte[] aSize = BitConverter.GetBytes(aOut.Length);
Array.Copy(aSize, 0, pBufOut, StartIndex, aSize.Length);
StartIndex += aSize.Length;
Array.Copy(aOut, 0, pBufOut, StartIndex, aOut.Length);
StartIndex += aOut.Length;
}
// === stop threads ===
Stop();
// ====================
}
public void Decode(ref byte[] pBufIn, out byte[] pBufOut)
{
int i;
pBufOut = null;
if (pBufIn[0] == 0)
{
byte[] aIn = new byte[pBufIn.Length - 1];
Array.Copy(pBufOut, 1, aIn, 0, aIn.Length);
Huffman.Decode(ref aIn, out pBufOut);
return;
}
// === start threads ===
Start();
// =====================
int j;
int StartIndex = 1;
for (i = 0; i < m_ProcessCount; i++)
{
int size = BitConverter.ToInt32(pBufIn, StartIndex);
StartIndex += sizeof(int);
byte[] aIn = new byte[size];
Array.Copy(pBufIn, StartIndex, aIn, 0, aIn.Length);
StartIndex += size;
m_threadRoutine[i].ArrayIn = aIn;
}
for (i = 0; i < m_ProcessCount; i++)
{
m_threadRoutine[i].m_Command = 1;
m_threadRoutine[i].ewhStart.Set();
}
int outSize = 0;
for (i = 0; i < m_ProcessCount; i++)
{
m_threadRoutine[i].ewhStop.WaitOne();
outSize += m_threadRoutine[i].ArrayOut.Length;
}
pBufOut = new byte[outSize];
StartIndex = 0;
for (i = 0; i < m_ProcessCount; i++)
{
byte[] aOut = m_threadRoutine[i].ArrayOut;
Array.Copy(aOut, 0, pBufOut, StartIndex, aOut.Length);
StartIndex += aOut.Length;
}
// === stop threads ===
Stop();
// ====================
}