DataMatrixVersion.cpp Example File

 /*
  *  Version.cpp
  *  zxing
  *
  *  Created by Luiz Silva on 09/02/2010.
  *  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/datamatrix/Version.h>
 #include <limits>
 #include <iostream>

 namespace zxing {
 namespace datamatrix {
 using namespace std;

 ECB::ECB(int count, int dataCodewords) :
     count_(count), dataCodewords_(dataCodewords) {
 }

 int ECB::getCount() {
   return count_;
 }

 int ECB::getDataCodewords() {
   return dataCodewords_;
 }

 ECBlocks::ECBlocks(int ecCodewords, ECB *ecBlocks) :
     ecCodewords_(ecCodewords), ecBlocks_(1, ecBlocks) {
 }

 ECBlocks::ECBlocks(int ecCodewords, ECB *ecBlocks1, ECB *ecBlocks2) :
     ecCodewords_(ecCodewords), ecBlocks_(1, ecBlocks1) {
   ecBlocks_.push_back(ecBlocks2);
 }

 int ECBlocks::getECCodewords() {
   return ecCodewords_;
 }

 std::vector<ECB*>& ECBlocks::getECBlocks() {
   return ecBlocks_;
 }

 ECBlocks::~ECBlocks() {
   for (size_t i = 0; i < ecBlocks_.size(); i++) {
     delete ecBlocks_[i];
   }
 }

 vector<Ref<Version> > Version::VERSIONS;
 static int N_VERSIONS = Version::buildVersions();

 Version::Version(int versionNumber, int symbolSizeRows, int symbolSizeColumns, int dataRegionSizeRows,
                 int dataRegionSizeColumns, ECBlocks* ecBlocks) : versionNumber_(versionNumber),
                 symbolSizeRows_(symbolSizeRows), symbolSizeColumns_(symbolSizeColumns),
                 dataRegionSizeRows_(dataRegionSizeRows), dataRegionSizeColumns_(dataRegionSizeColumns),
                 ecBlocks_(ecBlocks), totalCodewords_(0) {
     // Calculate the total number of codewords
     int total = 0;
     int ecCodewords = ecBlocks_->getECCodewords();
     vector<ECB*> &ecbArray = ecBlocks_->getECBlocks();
     for (unsigned int i = 0; i < ecbArray.size(); i++) {
       ECB *ecBlock = ecbArray[i];
       total += ecBlock->getCount() * (ecBlock->getDataCodewords() + ecCodewords);
     }
     totalCodewords_ = total;
 }

 Version::~Version() {
     delete ecBlocks_;
 }

 int Version::getVersionNumber() {
   return versionNumber_;
 }

 int Version::getSymbolSizeRows() {
   return symbolSizeRows_;
 }

 int Version::getSymbolSizeColumns() {
   return symbolSizeColumns_;
 }

 int Version::getDataRegionSizeRows() {
   return dataRegionSizeRows_;
 }

 int Version::getDataRegionSizeColumns() {
   return dataRegionSizeColumns_;
 }

 int Version::getTotalCodewords() {
   return totalCodewords_;
 }

 ECBlocks* Version::getECBlocks() {
   return ecBlocks_;
 }

 Ref<Version> Version::getVersionForDimensions(int numRows, int numColumns) {
     if ((numRows & 0x01) != 0 || (numColumns & 0x01) != 0) {
       throw ReaderException("Number of rows and columns must be even");
     }

     // TODO(bbrown): This is doing a linear search through the array of versions.
     // If we interleave the rectangular versions with the square versions we could
     // do a binary search.
     for (int i = 0; i < N_VERSIONS; ++i){
       Ref<Version> version(VERSIONS[i]);
       if (version->getSymbolSizeRows() == numRows && version->getSymbolSizeColumns() == numColumns) {
         return version;
       }
     }
     throw ReaderException("Error version not found");
   }

 /**
  * See ISO 16022:2006 5.5.1 Table 7
  */
 int Version::buildVersions() {
   VERSIONS.push_back(Ref<Version>(new Version(1, 10, 10, 8, 8,
                                                   new ECBlocks(5, new ECB(1, 3)))));
   VERSIONS.push_back(Ref<Version>(new Version(2, 12, 12, 10, 10,
                                                   new ECBlocks(7, new ECB(1, 5)))));
   VERSIONS.push_back(Ref<Version>(new Version(3, 14, 14, 12, 12,
                                                   new ECBlocks(10, new ECB(1, 8)))));
   VERSIONS.push_back(Ref<Version>(new Version(4, 16, 16, 14, 14,
                                                   new ECBlocks(12, new ECB(1, 12)))));
   VERSIONS.push_back(Ref<Version>(new Version(5, 18, 18, 16, 16,
                                                   new ECBlocks(14, new ECB(1, 18)))));
   VERSIONS.push_back(Ref<Version>(new Version(6, 20, 20, 18, 18,
                                                   new ECBlocks(18, new ECB(1, 22)))));
   VERSIONS.push_back(Ref<Version>(new Version(7, 22, 22, 20, 20,
                                                   new ECBlocks(20, new ECB(1, 30)))));
   VERSIONS.push_back(Ref<Version>(new Version(8, 24, 24, 22, 22,
                                                   new ECBlocks(24, new ECB(1, 36)))));
   VERSIONS.push_back(Ref<Version>(new Version(9, 26, 26, 24, 24,
                                                   new ECBlocks(28, new ECB(1, 44)))));
   VERSIONS.push_back(Ref<Version>(new Version(10, 32, 32, 14, 14,
                                                   new ECBlocks(36, new ECB(1, 62)))));
   VERSIONS.push_back(Ref<Version>(new Version(11, 36, 36, 16, 16,
                                                   new ECBlocks(42, new ECB(1, 86)))));
   VERSIONS.push_back(Ref<Version>(new Version(12, 40, 40, 18, 18,
                                                   new ECBlocks(48, new ECB(1, 114)))));
   VERSIONS.push_back(Ref<Version>(new Version(13, 44, 44, 20, 20,
                                                   new ECBlocks(56, new ECB(1, 144)))));
   VERSIONS.push_back(Ref<Version>(new Version(14, 48, 48, 22, 22,
                                                   new ECBlocks(68, new ECB(1, 174)))));
   VERSIONS.push_back(Ref<Version>(new Version(15, 52, 52, 24, 24,
                                                   new ECBlocks(42, new ECB(2, 102)))));
   VERSIONS.push_back(Ref<Version>(new Version(16, 64, 64, 14, 14,
                                                   new ECBlocks(56, new ECB(2, 140)))));
   VERSIONS.push_back(Ref<Version>(new Version(17, 72, 72, 16, 16,
                                                   new ECBlocks(36, new ECB(4, 92)))));
   VERSIONS.push_back(Ref<Version>(new  Version(18, 80, 80, 18, 18,
                                                   new ECBlocks(48, new ECB(4, 114)))));
   VERSIONS.push_back(Ref<Version>(new Version(19, 88, 88, 20, 20,
                                                   new ECBlocks(56, new ECB(4, 144)))));
   VERSIONS.push_back(Ref<Version>(new Version(20, 96, 96, 22, 22,
                                                   new ECBlocks(68, new ECB(4, 174)))));
   VERSIONS.push_back(Ref<Version>(new Version(21, 104, 104, 24, 24,
                                                   new ECBlocks(56, new ECB(6, 136)))));
   VERSIONS.push_back(Ref<Version>(new Version(22, 120, 120, 18, 18,
                                                   new ECBlocks(68, new ECB(6, 175)))));
   VERSIONS.push_back(Ref<Version>(new Version(23, 132, 132, 20, 20,
                                                   new ECBlocks(62, new ECB(8, 163)))));
   VERSIONS.push_back(Ref<Version>(new Version(24, 144, 144, 22, 22,
                                                   new ECBlocks(62, new ECB(8, 156), new ECB(2, 155)))));
   VERSIONS.push_back(Ref<Version>(new Version(25, 8, 18, 6, 16,
                                                   new ECBlocks(7, new ECB(1, 5)))));
   VERSIONS.push_back(Ref<Version>(new Version(26, 8, 32, 6, 14,
                                                   new ECBlocks(11, new ECB(1, 10)))));
   VERSIONS.push_back(Ref<Version>(new Version(27, 12, 26, 10, 24,
                                                       new ECBlocks(14, new ECB(1, 16)))));
   VERSIONS.push_back(Ref<Version>(new Version(28, 12, 36, 10, 16,
                                                       new ECBlocks(18, new ECB(1, 22)))));
   VERSIONS.push_back(Ref<Version>(new Version(29, 16, 36, 14, 16,
                                                       new ECBlocks(24, new ECB(1, 32)))));
   VERSIONS.push_back(Ref<Version>(new Version(30, 16, 48, 14, 22,
                                                       new ECBlocks(28, new ECB(1, 49)))));
   return VERSIONS.size();
 }
 }
 }