public static int DoCompress(string infile, MemoryStream output, FormatCompress format, out FormatCompress actualFormat) { CompressionFormat fmt = null; switch (format) { case FormatCompress.LZ10: fmt = new LZ10(); break; case FormatCompress.LZ11: fmt = new LZ11(); break; case FormatCompress.LZOVL: fmt = new LZOvl(); break; case FormatCompress.RLE: fmt = new RLE(); break; case FormatCompress.HUFF4: Huffman.CompressBlockSize = Huffman.BlockSize.FOURBIT; fmt = new Huffman(); break; case FormatCompress.HUFF8: Huffman.CompressBlockSize = Huffman.BlockSize.EIGHTBIT; fmt = new Huffman(); break; case FormatCompress.HUFF: return CompressHuff(infile, output, out actualFormat); case FormatCompress.GBA: return CompressGBA(infile, output, out actualFormat); case FormatCompress.NDS: return CompressNDS(infile, output, out actualFormat); default: actualFormat = FormatCompress.Invalid; return -1; } actualFormat = format; using (FileStream inStream = File.OpenRead(infile)) { try { return fmt.Compress(inStream, inStream.Length, output); } catch (Exception s) { // any exception generated by compression is a fatal exception Console.WriteLine(s.Message); return -1; } } }