Ajout barcode

+#include "barcodereader.h"
+#include <cstdlib>
+
+#ifndef MAX
+#define MAX(A,B) (((A)>(B))?(A):(B))
+#endif
+
+#ifndef MIN
+#define MIN(A,B) (((A)<(B))?(A):(B))
+#endif
+
+/* correspondances valeurs 
+ *
+ * 3 => Début, Fin !
+ * 10 => Milieu !
+ *
+ * 13 => 0L !
+ * 25 => 1L
+ * 19 => 2L
+ * 61 => 3L
+ * 35 => 4L
+ * 49 => 5L
+ * 47 => 6L
+ * 59 => 7L
+ * 55 => 8L
+ * 11 => 9L !
+ *
+ * 114 => 0R
+ * 102 => 1R
+ * 108 => 2R
+ * 66  => 3R
+ * 92  => 4R
+ * 78  => 5R
+ * 80  => 6R
+ * 68  => 7R
+ * 72  => 8R
+ * 116 => 9R 
+ *
+ */
+
+BarCodeReader::BarCodeReader(QObject* parent) : QObject(parent)
+{
+	samplingValues = 0;
+
+}
+
+
+unsigned char BarCodeReader::readPart(int start, int stop)
+{
+	unsigned char res = 0;
+	for (int i = start; i <= stop ; i++)
+	{
+		res = res << 1;
+		if (samplingValue[i*(idxStop-idxMin)/95] < mean)
+		       res++
+	}
+	return res;
+}
+
+void BarCodeReader::readBarCode(IplImage* img)
+{
+	if (samplingLine.isNull())
+		return ;
+
+	if (img->nChannels != 1)
+		return ;
+
+	int x1 = samplingLine.x1();
+	int x2 = samplingLine.x2();
+	int y1 = samplingLine.y1();
+	int y2 = samplingLine.y2();
+
+	if (x1 < 0 || x1 > img->width || x2 < 0 || x2 > img->width ||
+	    y1 < 0 || y1 > img->height ||y2 < 0 || y2 > img->height)
+		return ;
+
+	int adx = abs(samplingLine.dx());
+	int ady = abs(samplingLine.dy());
+
+	int length = MAX(adx,ady);
+	float mean=0;
+	
+	int i;
+
+
+	// first sampling along line and threshold computation
+	for (i = 0 ; i <= length ; i++) 
+	{
+		samplingValues[i] = cvmGet(img, i*(x2-x1)/length,
+						i*(y2-y1)/length);
+		mean = (i*mean + samplingValues[i]) / (float)(i+1);
+	}
+
+	// then find the extremas
+	idxStart=length;
+        idxStop=0;
+
+	for (i=0; i <= length; i++)
+	{
+		if (samplingValues[i] < mean ) 
+		{
+			if (idxStart > i) 
+				idxStart = i;
+			idxStop = i;
+		}
+	}
+
+	// we check D,M,F in the barcode
+	if (readPart(0,2) != 3)
+	{
+		std::cout << "D is not properly detected" << std::endl;
+	}
+	if (readPart(93,95) != 3)
+	{
+		std::cout << "F is not properly detected" << std::endl;
+	}
+	if (readPart(45,49) != 5)
+	{
+		std::cout << "M is not properly detected" << std::endl;
+	}
+
+	QString barcodeL, barcodeR;
+
+	for (i=0; i < 6; i++)
+	{
+		unsigned char r = readPart(3+i*7,9+i*7);
+		switch r {
+			case 13: barcodeL += "0"; break;
+			case 25: barcodeL += "1"; break;
+			case 19: barcodeL += "2"; break;
+			case 61: barcodeL += "3"; break; 
+			case 35: barcodeL += "4"; break;
+			case 49: barcodeL += "5"; break;
+			case 47: barcodeL += "6"; break;
+			case 59: barcodeL += "7"; break;
+			case 55: barcodeL += "8"; break;
+			case 11: barcodeL += "9"; break;		 
+		}
+
+		r = readPart(50 + i*7, 56 + i*7);
+		switch r {
+			case 114: barcodeR += "0"; break;
+		 	case 102: barcodeR += "1"; break;
+			case 108: barcodeR += "2"; break;
+
+
+		
+	}
+
+	
+
+
+
+}
+
+
+
+void BarCodeReader::setLine(QLine l)
+{
+	samplingLine = l;
+	if (samplingValues)
+		delete samplingValues;
+	samplingValues = new int(MAX(abs(samplingLine.dx()),
+				abs(samplingLine.dy()))+1);
+
+}

+#ifndef __BARCODEREADER_H__
+#define __BARCODEREADER_H__
+
+#include <QObject>
+#include <QLine>
+
+#include <opencv/cv.h>
+
+
+class BarCodeReader : public QObject
+{
+	public:
+BarCodeReader(QObject* parent);
+
+public slots:
+	void readBarCode(IplImage* img);
+	void setLine(QLine l);
+
+signals:
+	void sendBarCode(QString);
+	
+
+
+private:
+	unsigned char readPart(int start,int stop);
+
+	QLine samplingLine;
+	int* samplingValues;
+	float mean;
+	int idxStart;
+	int idxStop;
+};
+
+#endif //__BARCODEREADER_H__