static private byte[] HuffmanDecode(byte[] packed, int unpacked_size)
{
var dst = new byte[unpacked_size];
var decoder = new HuffmanDecoder(packed, dst);
return(decoder.Unpack());
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var aent = entry as PackedEntry;
if (null == aent || !aent.IsPacked)
{
return(base.OpenEntry(arc, entry));
}
aent.UnpackedSize = arc.File.View.ReadUInt32(entry.Offset);
var packed = arc.File.View.ReadBytes(entry.Offset + 4, entry.Size - 4);
var unpacked = new byte[aent.UnpackedSize];
var decoder = new HuffmanDecoder(packed, unpacked);
decoder.Unpack();
return(new BinMemoryStream(unpacked, entry.Name));
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var aent = entry as AosEntry;
if (null == aent || !aent.IsCompressed)
{
return(base.OpenEntry(arc, entry));
}
uint unpacked_size = arc.File.View.ReadUInt32(entry.Offset);
var packed = new byte[entry.Size - 4];
arc.File.View.Read(entry.Offset + 4, packed, 0, (uint)packed.Length);
var unpacked = new byte[unpacked_size];
var decoder = new HuffmanDecoder(packed, unpacked);
decoder.Unpack();
return(new BinMemoryStream(unpacked, entry.Name));
}
internal static void DecompressHuffman(IBinaryStream input, byte[] output)
{
var decomp = new HuffmanDecoder(input);
decomp.Unpack(output);
}