ITFReader.h Example File

 // -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
 #ifndef __ITF_READER_H__
 #define __ITF_READER_H__

 /*
  *  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/oned/OneDReader.h>
 #include <zxing/common/BitArray.h>
 #include <zxing/Result.h>

 namespace zxing {
 namespace oned {

 class ITFReader : public OneDReader {
 private:
   enum {MAX_AVG_VARIANCE = (unsigned int) (PATTERN_MATCH_RESULT_SCALE_FACTOR * 420/1000)};
   enum {MAX_INDIVIDUAL_VARIANCE = (int) (PATTERN_MATCH_RESULT_SCALE_FACTOR * 780/1000)};
   // Stores the actual narrow line width of the image being decoded.
   int narrowLineWidth;

   Range decodeStart(Ref<BitArray> row);
   Range decodeEnd(Ref<BitArray> row);
   static void decodeMiddle(Ref<BitArray> row, int payloadStart, int payloadEnd, std::string& resultString);
   void validateQuietZone(Ref<BitArray> row, int startPattern);
   static int skipWhiteSpace(Ref<BitArray> row);

   static Range findGuardPattern(Ref<BitArray> row, int rowOffset, std::vector<int> const& pattern);
   static int decodeDigit(std::vector<int>& counters);

   void append(char* s, char c);
 public:
   Ref<Result> decodeRow(int rowNumber, Ref<BitArray> row, DecodeHints hints);
   ITFReader();
   ~ITFReader();
 };

 }
 }

 #endif