System.IO.Compression.Deflater.SetInput C# (CSharp) Method

        internal void SetInput(byte[] inputBuffer, int startIndex, int count)
        {
            Debug.Assert(NeedsInput(), "We have something left in previous input!");
            Debug.Assert(null != inputBuffer);
            Debug.Assert(startIndex >= 0 && count >= 0 && count + startIndex <= inputBuffer.Length);
            Debug.Assert(!_inputBufferHandle.IsAllocated);

            if (0 == count)
                return;

            lock (SyncLock)
            {
                _inputBufferHandle = GCHandle.Alloc(inputBuffer, GCHandleType.Pinned);

                _zlibStream.NextIn = _inputBufferHandle.AddrOfPinnedObject() + startIndex;
                _zlibStream.AvailIn = (uint)count;
            }
        }