private byte[] Compress(byte[] srcData, int bufferSize)
{
if (!this.CompressMode)
{
throw new Exception();
}
int length = srcData.Length;
int maxDestSize = Lz4.LZ4_compressBound(length);
if (maxDestSize <= 0)
{
throw new Exception();
}
byte[] array1 = new byte[maxDestSize];
int num = Lz4.LZ4_compress_default(srcData, array1, length, maxDestSize);
if (0 >= num || num >= length)
{
throw new Exception();
}
Array.Resize <byte>(ref array1, num);
byte[] array2 = new byte[bufferSize];
Array.Copy((Array)array1, 0, (Array)array2, bufferSize - num, num);
if (Lz4.LZ4_decompress_safe(array2, bufferSize - num, array2, 0, num, length) != length)
{
throw new Exception();
}
Array.Resize <byte>(ref array2, length);
if (!((IEnumerable <byte>)array2).SequenceEqual <byte>((IEnumerable <byte>)srcData))
{
throw new Exception();
}
return(array1);
}
public static int LZ4_decompress_safe(byte[] source, int sourceOffset, byte[] dest, int destOffset, int compressedSize, int maxDecompressedSize)
{
using (new Lz4.ScopedGCHandle((object)source, GCHandleType.Pinned))
{
using (new Lz4.ScopedGCHandle((object)dest, GCHandleType.Pinned))
return(Lz4.LZ4_decompress_safe(Marshal.UnsafeAddrOfPinnedArrayElement((Array)source, sourceOffset), Marshal.UnsafeAddrOfPinnedArrayElement((Array)dest, destOffset), compressedSize, maxDecompressedSize));
}
}
public static int LZ4_compress_default(byte[] source, byte[] dest, int sourceSize, int maxDestSize)
{
using (new Lz4.ScopedGCHandle((object)source, GCHandleType.Pinned))
{
using (new Lz4.ScopedGCHandle((object)dest, GCHandleType.Pinned))
return(Lz4.LZ4_compress_default(Marshal.UnsafeAddrOfPinnedArrayElement((Array)source, 0), Marshal.UnsafeAddrOfPinnedArrayElement((Array)dest, 0), sourceSize, maxDestSize));
}
}