public BrotliStream(Stream baseStream, CompressionMode mode, bool leaveOpen)
{
if (baseStream == null)
{
throw new ArgumentNullException("baseStream");
}
_mode = mode;
_stream = baseStream;
_leaveOpen = leaveOpen;
if (_mode == CompressionMode.Compress)
{
_state = Brolib.BrotliEncoderCreateInstance();
if (_state == IntPtr.Zero)
{
throw new BrotliException("Unable to create brotli encoder instance");
}
Brolib.BrotliEncoderSetParameter(_state, BrotliEncoderParameter.Quality, 5);
Brolib.BrotliEncoderSetParameter(_state, BrotliEncoderParameter.LGWin, 22);
}
else
{
_state = Brolib.BrotliDecoderCreateInstance();
if (_state == IntPtr.Zero)
{
throw new BrotliException("Unable to create brotli decoder instance");
}
}
_ptrInputBuffer = Marshal.AllocHGlobal(BufferSize);
_ptrOutputBuffer = Marshal.AllocHGlobal(BufferSize);
_ptrNextInput = _ptrInputBuffer;
_ptrNextOutput = _ptrOutputBuffer;
_managedBuffer = new Byte[BufferSize];
}
static IntPtr CreateDecoderInstance()
{
IntPtr result = Brolib.BrotliDecoderCreateInstance();
if (result == IntPtr.Zero)
{
throw new BrotliException("Unable to create brotli decoder instance");
}
return(result);
}
