private static byte[] Compress(byte[] zlib)
{
// Create a GZIP stream with decompression mode.
// ... Then create a buffer and write into while reading from the GZIP stream.
using (MemoryStream memory = new MemoryStream())
{
var def = new Deflater();
def.setInput(gzip);
def.finish();
var decompressStream = new MemoryStream();
int i = 0;
var buffer = new byte[1024 * 1024];
while ((i = def.deflate(buffer)) > 0)
{
decompressStream.Write(buffer, 0, i);
}
return(decompressStream.ToArray());
}
//using (GZipStream stream = new GZipStream(memory, CompressionMode.Compress))
//{
// stream.Write(gzip, 0, gzip.Length);
// stream.Flush();
// stream.Close();
// return memory.ToArray();
//}
}
public Packet51MapChunk(int i, int j, int k, int l, int i1, int j1, World world)
{
isChunkDataPacket = true;
xPosition = i;
yPosition = j;
zPosition = k;
xSize = l;
ySize = i1;
zSize = j1;
byte[] abyte0 = world.getChunkData(i, j, k, l, i1, j1);
var deflater = new Deflater(1);
try
{
deflater.setInput(abyte0);
deflater.finish();
chunk = new byte[(l * i1 * j1 * 5) / 2];
chunkSize = deflater.deflate(chunk);
}
finally
{
deflater.end();
}
}
private static int compress(int tp, byte[] inBytes, int inSize, byte[] outBytes)
{
if (inSize == 0)
{
return(0);
}
int t1 = 0, t2 = (inSize + 1) / 2;
int inPtr = 0, ret;
byte[] tmp = new byte[inSize];
// zip and rle treat the data first, in the same way so I'm not
// repeating the code
if ((tp == ZIP_COMPRESSION) || (tp == RLE_COMPRESSION))
{
// reorder the pixel data ~ straight from ImfZipCompressor.cpp :)
while (true)
{
if (inPtr < inSize)
{
tmp[t1++] = inBytes[inPtr++];
}
else
{
break;
}
if (inPtr < inSize)
{
tmp[t2++] = inBytes[inPtr++];
}
else
{
break;
}
}
// Predictor ~ straight from ImfZipCompressor.cpp :)
t1 = 1;
int p = tmp[t1 - 1];
while (t1 < inSize)
{
int d = (int)tmp[t1] - p + (128 + 256);
p = (int)tmp[t1];
tmp[t1] = (byte)d;
t1++;
}
}
// We'll just jump from here to the wanted compress/decompress stuff if
// need be
switch (tp)
{
case ZIP_COMPRESSION:
Deflater def = new Deflater(Deflater.DEFAULT_COMPRESSION, false);
def.setInput(tmp, 0, inSize);
def.finish();
ret = def.deflate(outBytes);
return(ret);
case RLE_COMPRESSION:
return(rleCompress(tmp, inSize, outBytes));
default:
return(-1);
}
}
private static int compress(int tp, byte[] inBytes, int inSize, byte[] outBytes)
{
if (inSize == 0)
return 0;
int t1 = 0, t2 = (inSize + 1) / 2;
int inPtr = 0, ret;
byte[] tmp = new byte[inSize];
// zip and rle treat the data first, in the same way so I'm not
// repeating the code
if ((tp == ZIP_COMPRESSION) || (tp == RLE_COMPRESSION))
{
// reorder the pixel data ~ straight from ImfZipCompressor.cpp :)
while (true)
{
if (inPtr < inSize)
tmp[t1++] = inBytes[inPtr++];
else
break;
if (inPtr < inSize)
tmp[t2++] = inBytes[inPtr++];
else
break;
}
// Predictor ~ straight from ImfZipCompressor.cpp :)
t1 = 1;
int p = tmp[t1 - 1];
while (t1 < inSize)
{
int d = (int)tmp[t1] - p + (128 + 256);
p = (int)tmp[t1];
tmp[t1] = (byte)d;
t1++;
}
}
// We'll just jump from here to the wanted compress/decompress stuff if
// need be
switch (tp)
{
case ZIP_COMPRESSION:
Deflater def = new Deflater(Deflater.DEFAULT_COMPRESSION, false);
def.setInput(tmp, 0, inSize);
def.finish();
ret = def.deflate(outBytes);
return ret;
case RLE_COMPRESSION:
return rleCompress(tmp, inSize, outBytes);
default:
return -1;
}
}
