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137 lines
5.5 KiB
137 lines
5.5 KiB
/***************************************************************************
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copyright : (C) 2007 by Sebastian Held
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email : sebastian.held@gmx.de
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***************************************************************************/
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/***************************************************************************
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* *
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* ### based on BaToo: http://people.inf.ethz.ch/adelmanr/batoo/ ### *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of version 2 of the GNU General Public License as *
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* published by the Free Software Foundation; *
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* *
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***************************************************************************/
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#ifndef BARCODE_H
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#define BARCODE_H
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#include <tqthread.h>
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#include <tqimage.h>
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#include <tqvaluevector.h>
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#include <tqobject.h>
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#include <tqmutex.h>
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#include <math.h>
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#include "barcode_v4l.h"
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//#define BarcodeDecoder_DEBUG
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//#define Decoder_EAN13_DEBUG
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//#define Barcode_DEBUG
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namespace barcodeRecognition {
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static int code_odd[][4] = { { 30, 20, 10, 10 },
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{ 20, 20, 20, 10 },
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{ 20, 10, 20, 20 },
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{ 10, 40, 10, 10 },
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{ 10, 10, 30, 20 },
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{ 10, 20, 30, 10 },
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{ 10, 10, 10, 40 },
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{ 10, 30, 10, 20 },
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{ 10, 20, 10, 30 },
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{ 30, 10, 10, 20 } };
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static int code_even[][4] = { { 10, 10, 20, 30 },
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{ 10, 20, 20, 20 },
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{ 20, 20, 10, 20 },
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{ 10, 10, 40, 10 },
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{ 20, 30, 10, 10 },
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{ 10, 30, 20, 10 },
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{ 40, 10, 10, 10 },
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{ 20, 10, 30, 10 },
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{ 30, 10, 20, 10 },
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{ 20, 10, 10, 30 } };
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static bool parity_pattern_list[][6] = { { false, false, false, false, false, false },
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{ false, false, true, false, true, true },
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{ false, false, true, true, false, true },
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{ false, false, true, true, true, false },
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{ false, true, false, false, true, true },
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{ false, true, true, false, false, true },
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{ false, true, true, true, false, false },
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{ false, true, false, true, false, true },
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{ false, true, false, true, true, false },
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{ false, true, true, false, true, false } };
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class Barcode_EAN13 {
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public:
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Barcode_EAN13();
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Barcode_EAN13( TQValueVector<int> code );
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bool isNull() const { return m_null; }
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bool isValid() const;
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TQValueVector<int> getNumbers() const;
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void setCode( TQValueVector<int> code );
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TQString toString() const;
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bool operator!= ( const Barcode_EAN13 &code );
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protected:
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TQValueVector<int> m_numbers;
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bool m_null;
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};
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class MatchMakerResult {
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public:
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MatchMakerResult( bool even, int digit );
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bool isEven() const {return m_even;}
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int getDigit() const {return m_digit;}
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protected:
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int m_digit;
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bool m_even;
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};
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class Decoder_EAN13 {
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public:
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enum { BOTH_TABLES = 0, EVEN_TABLE = 1, ODD_TABLE = 2 };
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static Barcode_EAN13 recognize( TQValueVector< TQValueVector<int> > fields );
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static TQValueVector<int> decode( TQValueVector< TQValueVector<int> > fields, int start_i, int end_i );
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static MatchMakerResult recognizeNumber( TQValueVector< TQValueVector<int> > fields, int code_table_to_use );
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static MatchMakerResult recognizeSystemCode( bool parity_pattern[6] );
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};
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/** \brief this thread handles barcode recognition using webcams
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* @author Sebastian Held <sebastian.held@gmx.de>
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*/
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class barcodeRecognitionThread : public TQObject, public TQThread {
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TQ_OBJECT
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public:
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barcodeRecognitionThread();
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~barcodeRecognitionThread();
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virtual void run();
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void stop();
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void recognizeBarcode( TQImage img );
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bool isWebcamAvailable();
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signals:
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void recognized( TQString barcode );
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void gotImage( TQImage &img );
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protected:
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volatile bool m_stop;
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TQImage m_barcode_img;
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TQMutex m_stop_mutex, m_barcode_img_mutex;
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barcode_v4l *m_barcode_v4l;
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Barcode_EAN13 recognize( TQImage img );
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Barcode_EAN13 recognizeCode( TQImage img, int x1, int x2, int y );
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void addNumberToPossibleNumbers( TQValueVector<int> number, int possible_numbers[10][13][2], bool correct_code );
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void sortDigits( int possible_numbers[10][13][2] );
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Barcode_EAN13 extractBarcode( int possible_numbers[10][13][2] );
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TQValueVector<int> transformPathToBW( TQValueVector<TQRgb> line);
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TQValueVector< TQValueVector<int> > extractFieldInformation( TQValueVector<int> string );
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Barcode_EAN13 detectValidBarcode ( int possible_numbers[10][13][2], int max_amount_of_considered_codes );
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bool isValid( int numbers[13] );
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bool isValid( TQValueVector<int> numbers );
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void printArray( int array[10][13][2], int level );
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};
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}
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#endif
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