public void Write(BinaryWriter bw)
{
bw.Write(LxrsFooter.s_magic);
bw.Write(LxrsFooter.s_version);
using var ms = new MemoryStream();
using var tempBw = new BinaryWriter(ms);
foreach (var s in FileInfos)
{
tempBw.WriteCR2WString(s);
}
var inbuffer = ms.ToByteArray();
IEnumerable <byte> outBuffer = new List <byte>();
var r = OodleHelper.Compress(
inbuffer,
inbuffer.Length,
ref outBuffer,
OodleNative.OodleLZ_Compressor.Kraken,
OodleNative.OodleLZ_Compression.Normal,
false);
bw.Write(inbuffer.Length); //size
bw.Write(outBuffer.Count()); //zsize
bw.Write(FileInfos.Count()); //count
bw.Write(outBuffer.ToArray());
}
/// <summary>
/// Kraken-compresses a buffer and writes it to a stream.
/// </summary>
/// <param name="bw"></param>
/// <param name="inbuffer"></param>
/// <returns></returns>
public static (uint, uint) CompressAndWrite(this BinaryWriter bw, byte[] inbuffer)
{
var size = (uint)inbuffer.Length;
if (size < 255)
{
var crc = Crc32Algorithm.Compute(inbuffer);
bw.Write(inbuffer);
return(size, crc);
}
else
{
IEnumerable <byte> outBuffer = new List <byte>();
var r = OodleHelper.Compress(
inbuffer,
(int)size,
ref outBuffer,
OodleNative.OodleLZ_Compressor.Kraken,
OodleNative.OodleLZ_Compression.Normal);
var b = outBuffer.ToArray();
var crc = Crc32Algorithm.Compute(b);
bw.Write(b);
return((uint)r, crc);
}
}
private static int OodleTask(string path, string outpath, bool decompress, bool compress)
{
if (string.IsNullOrEmpty(path))
{
return(0);
}
if (string.IsNullOrEmpty(outpath))
{
outpath = Path.ChangeExtension(path, ".kark");
}
if (decompress)
{
var file = File.ReadAllBytes(path);
using var ms = new MemoryStream(file);
using var br = new BinaryReader(ms);
var oodleCompression = br.ReadBytes(4);
if (!(oodleCompression.SequenceEqual(new byte[] { 0x4b, 0x41, 0x52, 0x4b })))
{
throw new NotImplementedException();
}
var size = br.ReadUInt32();
var buffer = br.ReadBytes(file.Length - 8);
byte[] unpacked = new byte[size];
long unpackedSize = OodleHelper.Decompress(buffer, unpacked);
using var msout = new MemoryStream();
using var bw = new BinaryWriter(msout);
bw.Write(unpacked);
File.WriteAllBytes($"{outpath}", msout.ToArray());
}
if (compress)
{
var inbuffer = File.ReadAllBytes(path);
IEnumerable <byte> outBuffer = new List <byte>();
var r = OodleHelper.Compress(
inbuffer,
inbuffer.Length,
ref outBuffer,
OodleNative.OodleLZ_Compressor.Kraken,
OodleNative.OodleLZ_Compression.Normal,
true);
File.WriteAllBytes(outpath, outBuffer.ToArray());
}
return(1);
}