public static byte[] Compress(byte[] inputBytes)
{
MemoryStream inStream = new MemoryStream(inputBytes);
MemoryStream outStream = new MemoryStream();
LZMAEncoder encoder = new LZMAEncoder();
encoder.SetCoderProperties(propIDs, properties);
encoder.WriteCoderProperties(outStream);
long fileSize = inStream.Length;
for (int i = 0; i < 8; i++)
{
outStream.WriteByte((Byte)(fileSize >> (8 * i)));
}
encoder.Code(inStream, outStream, -1, -1, null);
return(outStream.ToArray());
}
public static byte[] Compress(byte[] data)
{
var encoder = new LZMAEncoder();
encoder.SetCoderProperties(_defaultIds, _defaultProperties);
using (var input = new MemoryStream(data))
using (var output = new MemoryStream())
{
output.Position += 4;
encoder.WriteCoderProperties(output);
encoder.Code(input, output, -1, -1, null);
byte[] compressed = output.ToArray();
byte[] compressedLengthData = BitConverter.GetBytes(compressed.Length);
Buffer.BlockCopy(compressedLengthData, 0, compressed, 0, 4);
return(compressed);
}
}
private ResourceDef Compress(ResourceDef resource)
{
CoderPropID[] propIDs =
{
CoderPropID.DictionarySize,
CoderPropID.PosStateBits,
CoderPropID.LitContextBits,
CoderPropID.LitPosBits,
CoderPropID.Algorithm,
CoderPropID.NumFastBytes,
CoderPropID.MatchFinder,
CoderPropID.EndMarker
};
object[] properties =
{
(Int32)(1 << 23),
(Int32)(2),
(Int32)(3),
(Int32)(0),
(Int32)(2),
(Int32)(128),
"bt4",
true
};
MemoryStream outStream = new MemoryStream();
LZMAEncoder encoder = new LZMAEncoder();
encoder.SetCoderProperties(propIDs, properties);
encoder.WriteCoderProperties(outStream);
MemoryStream inStream = new MemoryStream(resource.Data);
encoder.Code(inStream, outStream, -1, -1);
byte[] compressed = outStream.ToArray();
return(new ResourceDef(resource.Name, compressed));
}
