BitMatrixParser.h Example File

 #ifndef __BIT_MATRIX_PARSER__PDF_H__
 #define __BIT_MATRIX_PARSER__PDF_H__

 /*
  *  BitMatrixParser.h / PDF417
  *  zxing
  *
  *  Copyright 2010 ZXing authors All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include <zxing/ReaderException.h>
 #include <zxing/FormatException.h>
 #include <zxing/common/BitMatrix.h>
 #include <zxing/common/Counted.h>
 #include <zxing/common/Array.h>
 #include <stdint.h>

 namespace zxing {
 namespace pdf417 {
 namespace decoder {

 class BitMatrixParser : public Counted {
 private:
   static const int MAX_ROWS;
   // Maximum Codewords (Data + Error)
   static const int MAX_CW_CAPACITY;
   static const int MODULES_IN_SYMBOL;

   Ref<BitMatrix> bitMatrix_;
   int rows_; /* = 0 */
   int leftColumnECData_; /* = 0 */
   int rightColumnECData_; /* = 0 */
   /* added 2012-06-22 HFN */
   int aLeftColumnTriple_[3];
   int aRightColumnTriple_[3];
   int eraseCount_; /* = 0 */
   ArrayRef<int> erasures_;
   int ecLevel_; /* = -1 */

 public:
   static const int SYMBOL_TABLE[];
   static const int SYMBOL_TABLE_LENGTH;
   static const int CODEWORD_TABLE[];

 public:
   BitMatrixParser(Ref<BitMatrix> bitMatrix);
   ArrayRef<int> getErasures() const {return erasures_;}
   int getECLevel() const {return ecLevel_;}
   int getEraseCount() const {return eraseCount_;}
   ArrayRef<int> readCodewords(); /* throw(FormatException) */
   static int getCodeword(int64_t symbol, int *pi = NULL);

 private:
   bool VerifyOuterColumns(int rownumber);
   static ArrayRef<int> trimArray(ArrayRef<int> array, int size);
   static int findCodewordIndex(int64_t symbol);

   int processRow(int rowNumber,
                 ArrayRef<int> codewords, int next);

   int processRow(ArrayRef<int> rowCounters, int rowNumber, int rowHeight,
     ArrayRef<int> codewords, int next); /* throw(FormatException)  */
 protected:
   bool IsEqual(int &a, int &b, int rownumber);
 };

 }
 }
 }

 #endif // __BIT_MATRIX_PARSER__PDF_H__