public static SnappyStatusEnum ValidateCompressedBuffer(byte[] src, int src_offset, int src_size)
{
unsafe
{
fixed(byte *srcPtr = src)
{
var ptrSrc = new IntPtr((void *)srcPtr) + src_offset;
return(Libsnappy._snappy_validate_compressed_buffer(ptrSrc, new UIntPtr((uint)src_size)));
}
}
}
public static int UncompressedLength(byte[] src, int src_offset, int src_size)
{
unsafe
{
fixed(byte *srcPtr = src)
{
var ptrSrc = new IntPtr((void *)srcPtr) + src_offset;
var status = Libsnappy._snappy_uncompressed_length(ptrSrc, new UIntPtr((uint)src_size), out var size);
if (status == SnappyStatusEnum.SNAPPY_OK)
{
return((int)size.ToUInt32());
}
throw new SnappyException(status);
}
}
}
public static int Compress(byte[] src, int src_offset, int src_size, byte[] dst, int dst_offset, int dst_size)
{
unsafe
{
fixed(byte *srcPtr = src)
fixed(byte *dstPtr = dst)
{
var ptrSrc = new IntPtr((void *)srcPtr) + src_offset;
var ptrDst = new IntPtr((void *)dstPtr) + dst_offset;
var size = new UIntPtr((uint)dst_size);
var status = Libsnappy._snappy_compress(ptrSrc, new UIntPtr((uint)src_size), ptrDst, ref size);
if (status == SnappyStatusEnum.SNAPPY_OK)
{
return((int)size.ToUInt32());
}
throw new SnappyException(status);
}
}
}
public static int MaxCompressedLength(int source_length)
{
return((int)Libsnappy._snappy_max_compressed_length(new UIntPtr((uint)source_length)).ToUInt32());
}
