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//************************************************************************************** // // File name: Mcode.cs // Location: See Matrox Example Launcher in the MIL Control Center // // // Synopsis: This program decodes a 1D Code 39 linear Barcode and a 2D DataMatrix code. // //************************************************************************************** using System; using System.Collections.Generic; using System.Text; using Matrox.MatroxImagingLibrary; namespace MCode { class Program { static void Main(string[] args) { const string IMAGE_FILE = MIL.M_IMAGE_PATH + "Code.mim"; const int STRING_LENGTH_MAX = 64; // Regions around 1D code. const int BARCODE_REGION_TOP_LEFT_X = 256; const int BARCODE_REGION_TOP_LEFT_Y = 80; const int BARCODE_REGION_SIZE_X = 290; const int BARCODE_REGION_SIZE_Y = 60; // Regions around 2D code. const int DATAMATRIX_REGION_TOP_LEFT_X = 8; const int DATAMATRIX_REGION_TOP_LEFT_Y = 312; const int DATAMATRIX_REGION_SIZE_X = 118; const int DATAMATRIX_REGION_SIZE_Y = 105; MIL_ID MilApplication = MIL.M_NULL; // Application identifier. MIL_ID MilSystem = MIL.M_NULL; // System identifier. MIL_ID MilDisplay = MIL.M_NULL; // Display identifier. MIL_ID MilImage = MIL.M_NULL; // Image buffer identifier. MIL_ID MilOverlayImage = MIL.M_NULL; // Image buffer identifier. MIL_ID DataMatrixRegion = MIL.M_NULL; // Child containing DataMatrix. MIL_ID DataMatrixCode = MIL.M_NULL; // DataMatrix 2D code identifier. MIL_ID BarCodeRegion = MIL.M_NULL; // Child containing Code39. MIL_ID Barcode = MIL.M_NULL; // Code39 barcode identifier. MIL_ID CodeResults = MIL.M_NULL; // Barcode results identifier. MIL_INT BarcodeStatus = MIL.M_NULL; // Decoding status. MIL_INT DataMatrixStatus = MIL.M_NULL; // Decoding status. double AnnotationColor = MIL.M_COLOR_GREEN; double AnnotationBackColor = MIL.M_COLOR_GRAY; int n = 0; StringBuilder BarcodeString = new StringBuilder(STRING_LENGTH_MAX); // Array of characters read. StringBuilder DataMatrixString = new StringBuilder(STRING_LENGTH_MAX); // Array of characters read. // Allocate defaults. MIL.MappAllocDefault(MIL.M_DEFAULT, ref MilApplication, ref MilSystem, ref MilDisplay, MIL.M_NULL, MIL.M_NULL); // Restore source image into an automatically allocated image buffer. MIL.MbufRestore(IMAGE_FILE, MilSystem, ref MilImage); // Display the image buffer. MIL.MdispSelect(MilDisplay, MilImage); // Prepare for overlay annotations. MIL.MdispControl(MilDisplay, MIL.M_OVERLAY, MIL.M_ENABLE); MIL.MdispInquire(MilDisplay, MIL.M_OVERLAY_ID, ref MilOverlayImage); // Prepare bar code results buffer MIL.McodeAllocResult(MilSystem, MIL.M_DEFAULT, ref CodeResults); // Pause to show the original image. Console.Write("\n1D and 2D CODE READING:\n"); Console.Write("-----------------------\n\n"); Console.Write("This program will decode a linear Code 39 and a DataMatrix code.\n"); Console.Write("Press <Enter> to continue.\n\n"); Console.ReadKey(); // 1D BARCODE READING: // Create a read region around the code to speedup reading. MIL.MbufChild2d(MilImage, BARCODE_REGION_TOP_LEFT_X, BARCODE_REGION_TOP_LEFT_Y, BARCODE_REGION_SIZE_X, BARCODE_REGION_SIZE_Y, ref BarCodeRegion); // Allocate CODE objects. MIL.McodeAlloc(MilSystem, MIL.M_DEFAULT, MIL.M_DEFAULT, ref Barcode); MIL.McodeModel(Barcode, MIL.M_ADD, MIL.M_CODE39, MIL.M_NULL, MIL.M_DEFAULT, MIL.M_NULL); // Read codes from image. MIL.McodeRead(Barcode, BarCodeRegion, CodeResults); // Get decoding status. MIL.McodeGetResult(CodeResults, MIL.M_STATUS + MIL.M_TYPE_MIL_INT, ref BarcodeStatus); // Check if decoding was successful. if (BarcodeStatus == MIL.M_STATUS_READ_OK) { // Get decoded string. MIL.McodeGetResult(CodeResults, MIL.M_STRING, BarcodeString); // Draw the decoded strings and read region in the overlay image. MIL.MgraColor(MIL.M_DEFAULT, AnnotationColor); MIL.MgraBackColor(MIL.M_DEFAULT, AnnotationBackColor); MIL.MgraText(MIL.M_DEFAULT, MilOverlayImage, BARCODE_REGION_TOP_LEFT_X + 10, BARCODE_REGION_TOP_LEFT_Y + 80, " 1D linear 39 bar code: "); MIL.MgraText(MIL.M_DEFAULT, MilOverlayImage, BARCODE_REGION_TOP_LEFT_X + 200, BARCODE_REGION_TOP_LEFT_Y + 80, BarcodeString.ToString()); MIL.MgraRect(MIL.M_DEFAULT, MilOverlayImage, BARCODE_REGION_TOP_LEFT_X, BARCODE_REGION_TOP_LEFT_Y, BARCODE_REGION_TOP_LEFT_X + BARCODE_REGION_SIZE_X, BARCODE_REGION_TOP_LEFT_Y + BARCODE_REGION_SIZE_Y); } // Free objects. MIL.McodeFree(Barcode); MIL.MbufFree(BarCodeRegion); // 2D CODE READING: // Create a read region around the code to speedup reading. MIL.MbufChild2d(MilImage, DATAMATRIX_REGION_TOP_LEFT_X, DATAMATRIX_REGION_TOP_LEFT_Y, DATAMATRIX_REGION_SIZE_X, DATAMATRIX_REGION_SIZE_Y, ref DataMatrixRegion); // Allocate CODE objects. MIL.McodeAlloc(MilSystem, MIL.M_DEFAULT, MIL.M_DEFAULT, ref DataMatrixCode); MIL.McodeModel(DataMatrixCode, MIL.M_ADD, MIL.M_DATAMATRIX, MIL.M_NULL, MIL.M_DEFAULT, MIL.M_NULL); // Set the foreground value for the DataMatrix since it is different from the default value. MIL.McodeControl(DataMatrixCode, MIL.M_FOREGROUND_VALUE, MIL.M_FOREGROUND_WHITE); // Read codes from image. MIL.McodeRead(DataMatrixCode, DataMatrixRegion, CodeResults); // Get decoding status. MIL.McodeGetResult(CodeResults, MIL.M_STATUS + MIL.M_TYPE_MIL_INT, ref DataMatrixStatus); // Check if decoding was successful. if (DataMatrixStatus == MIL.M_STATUS_READ_OK) { // Get decoded string. MIL.McodeGetResult(CodeResults, MIL.M_STRING, DataMatrixString); // Draw the decoded strings and read region in the overlay image. MIL.MgraColor(MIL.M_DEFAULT, AnnotationColor); MIL.MgraBackColor(MIL.M_DEFAULT, AnnotationBackColor); for (n = 0; n < DataMatrixString.Length; n++) // Replace non printable characters with space.*/ { if ((DataMatrixString[n] < '0') || (DataMatrixString[n] > 'Z')) { DataMatrixString[n] = ' '; } } MIL.MgraText(MIL.M_DEFAULT, MilOverlayImage, DATAMATRIX_REGION_TOP_LEFT_X, DATAMATRIX_REGION_TOP_LEFT_Y + 120, " 2D Data Matrix code: "); MIL.MgraText(MIL.M_DEFAULT, MilOverlayImage, DATAMATRIX_REGION_TOP_LEFT_X + 200, DATAMATRIX_REGION_TOP_LEFT_Y + 120, DataMatrixString.ToString()); MIL.MgraRect(MIL.M_DEFAULT, MilOverlayImage, DATAMATRIX_REGION_TOP_LEFT_X, DATAMATRIX_REGION_TOP_LEFT_Y, DATAMATRIX_REGION_TOP_LEFT_X + DATAMATRIX_REGION_SIZE_X, DATAMATRIX_REGION_TOP_LEFT_Y + DATAMATRIX_REGION_SIZE_Y); } // Free objects. MIL.McodeFree(DataMatrixCode); MIL.MbufFree(DataMatrixRegion); // Free results buffer. MIL.McodeFree(CodeResults); // Pause to show the results. if ((DataMatrixStatus == MIL.M_STATUS_READ_OK) && (BarcodeStatus == MIL.M_STATUS_READ_OK)) { Console.Write("Decoding was successful and the strings were written under each code.\n"); } else { Console.Write("Decoding error found.\n"); } Console.Write("Press <Enter> to end.\n"); Console.ReadKey(); // Free other allocations. MIL.MbufFree(MilImage); MIL.MappFreeDefault(MilApplication, MilSystem, MilDisplay, MIL.M_NULL, MIL.M_NULL); } } }