unsafe MemoryStream zstdPackFancy(byte[] input)
{
var cbuf = new byte[(int)ZSTD.ZSTD_compressBound((IntPtr)input.Length)];
var ctx = ZSTD.ZSTD_createCCtx();
var dpos = (IntPtr)0;
var spos = (IntPtr)0;
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)100, 999);
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)101, 24); //window
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)103, 24); // chainlog
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)104, 24); //searchlog
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)105, 2); //minma
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)106, 9999); //tlen
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)107, 9);
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)402, 9);
ZSTD.ZSTD_CCtx_setParameter(ctx, (IntPtr)400, 8);
fixed(byte *pcbuf = cbuf)
{
ZSTD.ZSTD_compress_generic_simpleArgs(ctx, new IntPtr(pcbuf), (IntPtr)cbuf.Length, out dpos, input, (IntPtr)input.Length, out spos, (IntPtr)22);
}
ZSTD.ZSTD_freeCCtx(ctx);
var res = new MemoryStream();
res.Write(cbuf, 0, (int)dpos);
return(res);
}
public static byte[] CompressFile(byte[] data, IFileFormat format)
{
int Alignment = 0;
if (format.IFileInfo != null)
{
Alignment = format.IFileInfo.Alignment;
}
switch (format.IFileInfo.CompressionType)
{
case CompressionType.Yaz0:
return(EveryFileExplorer.YAZ0.Compress(data, 3, (uint)Alignment));
case CompressionType.Zstb:
return(ZSTD.Compress(data));
case CompressionType.Zlib:
return(ZLIB.Compress(data));
case CompressionType.None:
return(data);
default:
return(data);
}
}
unsafe MemoryStream zstdPack(byte[] input)
{
var cbuf = new byte[(int)ZSTD.ZSTD_compressBound((IntPtr)input.Length)];
int clen;
fixed(byte *pcbuf = cbuf)
{
clen = (int)ZSTD.ZSTD_compress(new IntPtr(pcbuf), (IntPtr)cbuf.Length, input, (IntPtr)input.Length, 22);
}
var res = new MemoryStream();
res.Write(cbuf, 0, clen);
return(res);
}
