private unsafe CompressionStatus ReadDeflateOutput(byte[] outputBuffer, StreamFlag flushCode, out int bytesRead)
{
if (outputBuffer?.Length < 0)
{
throw new ArgumentException("outputbuffer length must be bigger than 0");
}
lock (SyncLock)
{
fixed(byte *bufPtr = &outputBuffer[0])
{
_compression_struct.Destination = (IntPtr)bufPtr;
_compression_struct.DestinationSize = outputBuffer.Length;
var readStatus = CompressionStreamStruct.compression_stream_process(ref _compression_struct, flushCode);
switch (readStatus)
{
case CompressionStatus.Ok:
case CompressionStatus.End:
bytesRead = outputBuffer.Length - (int)_compression_struct.DestinationSize;
break;
default:
bytesRead = 0;
break;
}
_finished = readStatus == CompressionStatus.End;
return(readStatus);
}
}
}
/// <summary>
/// Creates the Compression stream that will handle inflation.
/// </summary>
private void InflateInit(CompressionAlgorithm algorithm)
{
_compression_struct = new CompressionStreamStruct();
var status = CompressionStreamStruct.compression_stream_init(ref _compression_struct, StreamOperation.Decode, algorithm);
if (status != CompressionStatus.Ok)
throw new InvalidOperationException(status.ToString()); }
private void Dispose(bool disposing)
{
if (!_isDisposed)
{
CompressionStreamStruct.compression_stream_destroy(ref _compression_struct);
DeallocateInputBufferHandle();
_isDisposed = true;
}
}
public static extern CompressionStatus compression_stream_destroy(ref CompressionStreamStruct stream);
public static extern CompressionStatus compression_stream_process(ref CompressionStreamStruct stream, StreamFlag flags);
public static extern CompressionStatus compression_stream_init(ref CompressionStreamStruct stream, StreamOperation operation, CompressionAlgorithm algorithm);
