/// <summary>
        ///
        /// </summary>
        /// <param name="contents"></param>
        /// <param name="format"></param>
        /// <param name="width"></param>
        /// <param name="height"></param>
        /// <param name="hints"></param>
        /// <returns></returns>
        public ByteMatrix encode(System.String contents, BarcodeFormat format, int width, int height, System.Collections.Hashtable hints)
        {
            if (contents == null || contents.Length == 0)
            {
                throw new System.ArgumentException("Found empty contents");
            }

            if (format != BarcodeFormat.MICRO_QR_CODE)
            {
                throw new System.ArgumentException("Can only encode QR_CODE, but got " + format);
            }

            if (width < 0 || height < 0)
            {
                throw new System.ArgumentException("Requested dimensions are too small: " + width + 'x' + height);
            }

            ErrorCorrectionLevel errorCorrectionLevel = ErrorCorrectionLevel.L;
            int cVersionNum = -1;

            if (hints != null)
            {
                ErrorCorrectionLevel requestedECLevel = (ErrorCorrectionLevel)hints[EncodeHintType.ERROR_CORRECTION];
                if (requestedECLevel != null)
                {
                    errorCorrectionLevel = requestedECLevel;
                }
                int versionNum = (int)hints[EncodeHintType.MICROQRCODE_VERSION];
                if (versionNum >= 1 && versionNum <= 4)
                {
                    cVersionNum = versionNum;
                }
            }

            MicroQRCode code = new MicroQRCode();

            Encoder.encode(contents, errorCorrectionLevel, hints, code, cVersionNum);
            return(renderResult(code, width, height));
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="contents"></param>
        /// <param name="format"></param>
        /// <param name="width"></param>
        /// <param name="height"></param>
        /// <param name="hints"></param>
        /// <returns></returns>
        public ByteMatrix encode(System.String contents, BarcodeFormat format, int width, int height, System.Collections.Hashtable hints)
        {
            if (contents == null || contents.Length == 0)
            {
                throw new System.ArgumentException("Found empty contents");
            }

            if (format != BarcodeFormat.MICRO_QR_CODE)
            {
                throw new System.ArgumentException("Can only encode QR_CODE, but got " + format);
            }

            if (width < 0 || height < 0)
            {
                throw new System.ArgumentException("Requested dimensions are too small: " + width + 'x' + height);
            }

            ErrorCorrectionLevel errorCorrectionLevel = ErrorCorrectionLevel.L;
            int cVersionNum = -1;
            if (hints != null)
            {
                ErrorCorrectionLevel requestedECLevel = (ErrorCorrectionLevel)hints[EncodeHintType.ERROR_CORRECTION];
                if (requestedECLevel != null)
                {
                    errorCorrectionLevel = requestedECLevel;
                }
                int versionNum = (int)hints[EncodeHintType.MICROQRCODE_VERSION];
                if (versionNum >= 1 && versionNum <= 4)
                    cVersionNum = versionNum;
            }

            MicroQRCode code = new MicroQRCode();
            Encoder.encode(contents, errorCorrectionLevel, hints, code, cVersionNum);
            return renderResult(code, width, height);
        }
        // Note that the input matrix uses 0 == white, 1 == black, while the output matrix uses
        // 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
        private static ByteMatrix renderResult(MicroQRCode code, int width, int height)
        {
            ByteMatrix input = code.Matrix;
            int inputWidth = input.Width;
            int inputHeight = input.Height;
            int qrWidth = inputWidth + (QUIET_ZONE_SIZE << 1);
            int qrHeight = inputHeight + (QUIET_ZONE_SIZE << 1);
            int outputWidth = System.Math.Max(width, qrWidth);
            int outputHeight = System.Math.Max(height, qrHeight);

            int multiple = System.Math.Min(outputWidth / qrWidth, outputHeight / qrHeight);
            // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
            // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
            // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
            // handle all the padding from 100x100 (the actual QR) up to 200x160.
            int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
            int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

            ByteMatrix output = new ByteMatrix(outputWidth, outputHeight);
            sbyte[][] outputArray = output.Array;

            // We could be tricky and use the first row in each set of multiple as the temporary storage,
            // instead of allocating this separate array.
            sbyte[] row = new sbyte[outputWidth];

            // 1. Write the white lines at the top
            for (int y = 0; y < topPadding; y++)
            {
                setRowColor(outputArray[y], (sbyte)SupportClass.Identity(255));
            }

            // 2. Expand the QR image to the multiple
            sbyte[][] inputArray = input.Array;
            for (int y = 0; y < inputHeight; y++)
            {
                // a. Write the white pixels at the left of each row
                for (int x = 0; x < leftPadding; x++)
                {
                    row[x] = (sbyte)SupportClass.Identity(255);
                }

                // b. Write the contents of this row of the barcode
                int offset = leftPadding;
                for (int x = 0; x < inputWidth; x++)
                {
                    // Redivivus.in Java to c# Porting update - Type cased sbyte
                    // 30/01/2010
                    // sbyte value_Renamed = (inputArray[y][x] == 1)?0:(sbyte) SupportClass.Identity(255);
                    sbyte value_Renamed = (sbyte)((inputArray[y][x] == 1) ? 0 : SupportClass.Identity(255));
                    for (int z = 0; z < multiple; z++)
                    {
                        row[offset + z] = value_Renamed;
                    }
                    offset += multiple;
                }

                // c. Write the white pixels at the right of each row
                offset = leftPadding + (inputWidth * multiple);
                for (int x = offset; x < outputWidth; x++)
                {
                    row[x] = (sbyte)SupportClass.Identity(255);
                }

                // d. Write the completed row multiple times
                offset = topPadding + (y * multiple);
                for (int z = 0; z < multiple; z++)
                {
                    Array.Copy(row, 0, outputArray[offset + z], 0, outputWidth);
                }
            }

            // 3. Write the white lines at the bottom
            int offset2 = topPadding + (inputHeight * multiple);
            for (int y = offset2; y < outputHeight; y++)
            {
                setRowColor(outputArray[y], (sbyte)SupportClass.Identity(255));
            }

            return output;
        }
        // Note that the input matrix uses 0 == white, 1 == black, while the output matrix uses
        // 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
        private static ByteMatrix renderResult(MicroQRCode code, int width, int height)
        {
            ByteMatrix input        = code.Matrix;
            int        inputWidth   = input.Width;
            int        inputHeight  = input.Height;
            int        qrWidth      = inputWidth + (QUIET_ZONE_SIZE << 1);
            int        qrHeight     = inputHeight + (QUIET_ZONE_SIZE << 1);
            int        outputWidth  = System.Math.Max(width, qrWidth);
            int        outputHeight = System.Math.Max(height, qrHeight);

            int multiple = System.Math.Min(outputWidth / qrWidth, outputHeight / qrHeight);
            // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
            // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
            // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
            // handle all the padding from 100x100 (the actual QR) up to 200x160.
            int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
            int topPadding  = (outputHeight - (inputHeight * multiple)) / 2;

            ByteMatrix output = new ByteMatrix(outputWidth, outputHeight);

            sbyte[][] outputArray = output.Array;

            // We could be tricky and use the first row in each set of multiple as the temporary storage,
            // instead of allocating this separate array.
            sbyte[] row = new sbyte[outputWidth];

            // 1. Write the white lines at the top
            for (int y = 0; y < topPadding; y++)
            {
                setRowColor(outputArray[y], (sbyte)SupportClass.Identity(255));
            }

            // 2. Expand the QR image to the multiple
            sbyte[][] inputArray = input.Array;
            for (int y = 0; y < inputHeight; y++)
            {
                // a. Write the white pixels at the left of each row
                for (int x = 0; x < leftPadding; x++)
                {
                    row[x] = (sbyte)SupportClass.Identity(255);
                }

                // b. Write the contents of this row of the barcode
                int offset = leftPadding;
                for (int x = 0; x < inputWidth; x++)
                {
                    // Redivivus.in Java to c# Porting update - Type cased sbyte
                    // 30/01/2010
                    // sbyte value_Renamed = (inputArray[y][x] == 1)?0:(sbyte) SupportClass.Identity(255);
                    sbyte value_Renamed = (sbyte)((inputArray[y][x] == 1) ? 0 : SupportClass.Identity(255));
                    for (int z = 0; z < multiple; z++)
                    {
                        row[offset + z] = value_Renamed;
                    }
                    offset += multiple;
                }

                // c. Write the white pixels at the right of each row
                offset = leftPadding + (inputWidth * multiple);
                for (int x = offset; x < outputWidth; x++)
                {
                    row[x] = (sbyte)SupportClass.Identity(255);
                }

                // d. Write the completed row multiple times
                offset = topPadding + (y * multiple);
                for (int z = 0; z < multiple; z++)
                {
                    Array.Copy(row, 0, outputArray[offset + z], 0, outputWidth);
                }
            }

            // 3. Write the white lines at the bottom
            int offset2 = topPadding + (inputHeight * multiple);

            for (int y = offset2; y < outputHeight; y++)
            {
                setRowColor(outputArray[y], (sbyte)SupportClass.Identity(255));
            }

            return(output);
        }