/// <summary>
/// Wrapper around Oodle Kraken Decompress. Decompresses an inputBuffer to an outputBuffer of correct size
/// </summary>
/// <param name="inputBuffer"></param>
/// <param name="outputBuffer"></param>
/// <returns></returns>
/// <exception cref="NotImplementedException"></exception>
public static unsafe int Decompress(byte[] inputBuffer, byte[] outputBuffer)
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
#pragma warning disable 162
if (true)
{
var inputHandle = GCHandle.Alloc(inputBuffer, GCHandleType.Pinned);
var inputAddress = inputHandle.AddrOfPinnedObject();
var outputHandle = GCHandle.Alloc(outputBuffer, GCHandleType.Pinned);
var outputAddress = outputHandle.AddrOfPinnedObject();
var r = OodleLoadLib.OodleLZ_Decompress(inputAddress,
outputAddress,
inputBuffer.Length,
outputBuffer.Length
);
inputHandle.Free();
outputHandle.Free();
return(r);
}
return(OodleNative.OodleLZ_Decompress(
inputBuffer,
inputBuffer.Length,
outputBuffer,
outputBuffer.Length,
OodleNative.OodleLZ_FuzzSafe.No, OodleNative.OodleLZ_CheckCRC.No,
OodleNative.OodleLZ_Verbosity.None,
0,
0,
0,
0,
0,
0,
OodleNative.OodleLZ_Decode.Unthreaded));
#pragma warning restore 162
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
return(OozNative.Kraken_Decompress(inputBuffer, inputBuffer.Length, outputBuffer,
outputBuffer.Length));
}
else
{
throw new NotImplementedException();
}
}
/// <summary>
///
/// </summary>
/// <param name="inputBuffer"></param>
/// <param name="outputBuffer"></param>
/// <returns></returns>
/// <exception cref="NotImplementedException"></exception>
public static int Decompress(byte[] inputBuffer, byte[] outputBuffer)
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
return(OodleNative.OodleLZ_Decompress(inputBuffer, inputBuffer.Length, outputBuffer,
outputBuffer.Length, OodleNative.OodleLZ_FuzzSafe.No, OodleNative.OodleLZ_CheckCRC.No,
OodleNative.OodleLZ_Verbosity.None, 0, 0, 0, 0, 0, 0, OodleNative.OodleLZ_Decode.Unthreaded));
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
return(OozNative.Kraken_Decompress(inputBuffer, inputBuffer.Length, outputBuffer,
outputBuffer.Length));
}
else
{
throw new NotImplementedException();
}
}
/// <summary>
///
/// </summary>
/// <param name="inputBytes"></param>
/// <param name="inputOffset"></param>
/// <param name="inputCount"></param>
/// <param name="outputBytes"></param>
/// <param name="outputOffset"></param>
/// <param name="outputCount"></param>
/// <param name="algo"></param>
/// <param name="level"></param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="ArgumentOutOfRangeException"></exception>
/// <exception cref="NotImplementedException"></exception>
public static int Compress(
byte[] inputBytes,
// int inputOffset,
int inputCount,
ref IEnumerable <byte> outputBuffer,
// int outputOffset,
// int outputCount,
OodleNative.OodleLZ_Compressor algo = OodleNative.OodleLZ_Compressor.Kraken,
OodleNative.OodleLZ_Compression level = OodleNative.OodleLZ_Compression.Normal)
{
if (inputBytes == null)
{
throw new ArgumentNullException(nameof(inputBytes));
}
if (inputCount <= 0 || inputCount > inputBytes.Length)
{
throw new ArgumentOutOfRangeException(nameof(inputCount));
}
if (outputBuffer == null)
{
throw new ArgumentNullException(nameof(outputBuffer));
}
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
var compressedBufferSizeNeeded = OodleHelper.GetCompressedBufferSizeNeeded((int)inputCount);
var compressedBuffer = new byte[compressedBufferSizeNeeded];
var inputHandle = GCHandle.Alloc(inputBytes, GCHandleType.Pinned);
var inputAddress = inputHandle.AddrOfPinnedObject();
var outputHandle = GCHandle.Alloc(compressedBuffer, GCHandleType.Pinned);
var outputAddress = outputHandle.AddrOfPinnedObject();
var result = (int)OodleNative.Compress(
(int)algo,
inputAddress,
inputCount,
outputAddress,
(int)level,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
(long)0
);
inputHandle.Free();
outputHandle.Free();
//resize buffer
var writelist = new List <byte>()
{
0x4B, 0x41, 0x52, 0x4B //KARK, TODO: make this dependent on the compression algo
};
writelist.AddRange(BitConverter.GetBytes(inputCount));
writelist.AddRange(compressedBuffer.Take(result));
outputBuffer = writelist;
return(outputBuffer.Count());
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
//TODO: use ooz to compress
outputBuffer = inputBytes;
return(outputBuffer.Count());
// try
// {
// var result = OozNative.Compress(
// (int)algo,
// inputAddress,
// outputAddress,
// inputCount,
// IntPtr.Zero,
// IntPtr.Zero
// );
// inputHandle.Free();
// outputHandle.Free();
// return result;
// }
// catch (Exception e)
// {
// Console.WriteLine(e);
// throw;
// }
}
else
{
throw new NotImplementedException();
}
}
