public int TransformBlock(byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
{
if (TotalIn == 0 && Mode == CompressionMode.Decompress && inputBuffer[inputOffset] == 0x78 && inputBuffer[inputOffset + 1] == 0x9c)
{
inputOffset += 2;
inputCount -= 2;
}
var read = 0;
if (TotalOut == 0 && Mode == CompressionMode.Compress)
{
outputBuffer[outputOffset] = 0x78;
outputBuffer[outputOffset + 1] = 0x9c;
outputOffset += 2;
read += 2;
}
var inputBufferHandle = new GCHandle?(GCHandle.Alloc((object)inputBuffer, GCHandleType.Pinned));
handle.NextIn = inputBufferHandle.Value.AddrOfPinnedObject() + inputOffset;
handle.AvailIn = (uint)inputCount;
var outputBufferHandle = new GCHandle?(GCHandle.Alloc((object)outputBuffer, GCHandleType.Pinned));
handle.NextOut = outputBufferHandle.Value.AddrOfPinnedObject() + outputOffset;
handle.AvailOut = (uint)(outputBuffer.Length - outputOffset);
ZLibNative.ErrorCode code;
if (Mode == CompressionMode.Decompress)
{
code = handle.Inflate(ZLibNative.FlushCode.PartialFlush);
}
else
{
code = handle.Deflate(ZLibNative.FlushCode.PartialFlush);
}
read += (outputBuffer.Length - outputOffset) - (int)handle.AvailOut;
return(read);
}
