| OLD | NEW |
| (Empty) |
| 1 // Copyright 2014 PDFium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| 6 // Original code is licensed as follows: | |
| 7 /* | |
| 8 * Copyright 2007 ZXing authors | |
| 9 * | |
| 10 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 11 * you may not use this file except in compliance with the License. | |
| 12 * You may obtain a copy of the License at | |
| 13 * | |
| 14 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 15 * | |
| 16 * Unless required by applicable law or agreed to in writing, software | |
| 17 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 19 * See the License for the specific language governing permissions and | |
| 20 * limitations under the License. | |
| 21 */ | |
| 22 | |
| 23 #include "xfa/src/fxbarcode/datamatrix/BC_DataMatrixDecoder.h" | |
| 24 | |
| 25 #include <memory> | |
| 26 | |
| 27 #include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h" | |
| 28 #include "xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h" | |
| 29 #include "xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h" | |
| 30 #include "xfa/src/fxbarcode/datamatrix/BC_DataMatrixBitMatrixParser.h" | |
| 31 #include "xfa/src/fxbarcode/datamatrix/BC_DataMatrixDataBlock.h" | |
| 32 #include "xfa/src/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.h" | |
| 33 #include "xfa/src/fxbarcode/datamatrix/BC_DataMatrixVersion.h" | |
| 34 | |
| 35 CBC_DataMatrixDecoder::CBC_DataMatrixDecoder() { | |
| 36 m_rsDecoder = NULL; | |
| 37 } | |
| 38 void CBC_DataMatrixDecoder::Init() { | |
| 39 m_rsDecoder = | |
| 40 new CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256::DataMatrixField); | |
| 41 } | |
| 42 CBC_DataMatrixDecoder::~CBC_DataMatrixDecoder() { | |
| 43 delete m_rsDecoder; | |
| 44 } | |
| 45 CBC_CommonDecoderResult* CBC_DataMatrixDecoder::Decode( | |
| 46 CBC_CommonBitMatrix* bits, | |
| 47 int32_t& e) { | |
| 48 CBC_DataMatrixBitMatrixParser parser; | |
| 49 parser.Init(bits, e); | |
| 50 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 51 CBC_DataMatrixVersion* version = parser.GetVersion(); | |
| 52 std::unique_ptr<CFX_ByteArray> codewords(parser.ReadCodewords(e)); | |
| 53 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 54 CFX_PtrArray* dataBlocks = | |
| 55 CBC_DataMatrixDataBlock::GetDataBlocks(codewords.get(), version, e); | |
| 56 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 57 int32_t dataBlocksCount = dataBlocks->GetSize(); | |
| 58 int32_t totalBytes = 0; | |
| 59 int32_t i, j; | |
| 60 for (i = 0; i < dataBlocksCount; i++) { | |
| 61 totalBytes += | |
| 62 ((CBC_DataMatrixDataBlock*)(*dataBlocks)[i])->GetNumDataCodewords(); | |
| 63 } | |
| 64 CFX_ByteArray resultBytes; | |
| 65 resultBytes.SetSize(totalBytes); | |
| 66 for (j = 0; j < dataBlocksCount; j++) { | |
| 67 CFX_ByteArray* codewordBytes = | |
| 68 ((CBC_DataMatrixDataBlock*)(*dataBlocks)[j])->GetCodewords(); | |
| 69 int32_t numDataCodewords = | |
| 70 ((CBC_DataMatrixDataBlock*)(*dataBlocks)[j])->GetNumDataCodewords(); | |
| 71 CorrectErrors(*codewordBytes, numDataCodewords, e); | |
| 72 if (e != BCExceptionNO) { | |
| 73 for (int32_t i = 0; i < dataBlocks->GetSize(); i++) { | |
| 74 delete (CBC_DataMatrixDataBlock*)(*dataBlocks)[i]; | |
| 75 } | |
| 76 delete dataBlocks; | |
| 77 dataBlocks = NULL; | |
| 78 return NULL; | |
| 79 } | |
| 80 int32_t i; | |
| 81 for (i = 0; i < numDataCodewords; i++) { | |
| 82 resultBytes[i * dataBlocksCount + j] = (*codewordBytes)[i]; | |
| 83 } | |
| 84 } | |
| 85 for (i = 0; i < (dataBlocks->GetSize()); i++) { | |
| 86 delete (CBC_DataMatrixDataBlock*)(*dataBlocks)[i]; | |
| 87 } | |
| 88 delete dataBlocks; | |
| 89 dataBlocks = NULL; | |
| 90 CBC_CommonDecoderResult* resultR = | |
| 91 CBC_DataMatrixDecodedBitStreamParser::Decode(resultBytes, e); | |
| 92 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 93 return resultR; | |
| 94 } | |
| 95 void CBC_DataMatrixDecoder::CorrectErrors(CFX_ByteArray& codewordBytes, | |
| 96 int32_t numDataCodewords, | |
| 97 int32_t& e) { | |
| 98 int32_t numCodewords = codewordBytes.GetSize(); | |
| 99 CFX_Int32Array codewordsInts; | |
| 100 codewordsInts.SetSize(numCodewords); | |
| 101 int32_t i; | |
| 102 for (i = 0; i < numCodewords; i++) { | |
| 103 codewordsInts[i] = codewordBytes[i] & 0xFF; | |
| 104 } | |
| 105 int32_t numECCodewords = codewordBytes.GetSize() - numDataCodewords; | |
| 106 m_rsDecoder->Decode(&codewordsInts, numECCodewords, e); | |
| 107 if (e != BCExceptionNO) { | |
| 108 e = BCExceptionChecksumException; | |
| 109 return; | |
| 110 } | |
| 111 for (i = 0; i < numDataCodewords; i++) { | |
| 112 codewordBytes[i] = (uint8_t)codewordsInts[i]; | |
| 113 } | |
| 114 } | |
| OLD | NEW |