// Copyright 2014 PDFium Authors. All rights reserved. | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
// Original code is licensed as follows: | |
/* | |
* Copyright 2006 Jeremias Maerki. | |
* | |
* 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 "xfa/src/fxbarcode/barcode.h" | |
#include "BC_Encoder.h" | |
#include "BC_SymbolShapeHint.h" | |
#include "BC_SymbolInfo.h" | |
#include "BC_ErrorCorrection.h" | |
int32_t CBC_ErrorCorrection::FACTOR_SETS[] = {5, 7, 10, 11, 12, 14, 18, 20, | |
24, 28, 36, 42, 48, 56, 62, 68}; | |
int32_t CBC_ErrorCorrection::FACTORS[][100] = { | |
{228, 48, 15, 111, 62}, | |
{23, 68, 144, 134, 240, 92, 254}, | |
{28, 24, 185, 166, 223, 248, 116, 255, 110, 61}, | |
{175, 138, 205, 12, 194, 168, 39, 245, 60, 97, 120}, | |
{41, 153, 158, 91, 61, 42, 142, 213, 97, 178, 100, 242}, | |
{156, 97, 192, 252, 95, 9, 157, 119, 138, 45, 18, 186, 83, 185}, | |
{83, 195, 100, 39, 188, 75, 66, 61, 241, 213, 109, 129, 94, 254, 225, 48, | |
90, 188}, | |
{15, 195, 244, 9, 233, 71, 168, 2, 188, 160, 153, 145, 253, 79, 108, 82, 27, | |
174, 186, 172}, | |
{52, 190, 88, 205, 109, 39, 176, 21, 155, 197, 251, 223, 155, 21, 5, 172, | |
254, 124, 12, 181, 184, 96, 50, 193}, | |
{211, 231, 43, 97, 71, 96, 103, 174, 37, 151, 170, 53, 75, 34, 249, 121, 17, | |
138, 110, 213, 141, 136, 120, 151, 233, 168, 93, 255}, | |
{245, 127, 242, 218, 130, 250, 162, 181, 102, 120, 84, 179, 220, 251, 80, | |
182, 229, 18, 2, 4, 68, 33, 101, 137, 95, 119, 115, 44, 175, 184, 59, 25, | |
225, 98, 81, 112}, | |
{77, 193, 137, 31, 19, 38, 22, 153, 247, 105, 122, 2, 245, 133, 242, 8, 175, | |
95, 100, 9, 167, 105, 214, 111, 57, 121, 21, 1, 253, 57, 54, 101, 248, 202, | |
69, 50, 150, 177, 226, 5, 9, 5}, | |
{245, 132, 172, 223, 96, 32, 117, 22, 238, 133, 238, 231, 205, 188, 237, 87, | |
191, 106, 16, 147, 118, 23, 37, 90, 170, 205, 131, 88, 120, 100, 66, 138, | |
186, 240, 82, 44, 176, 87, 187, 147, 160, 175, 69, 213, 92, 253, 225, 19}, | |
{175, 9, 223, 238, 12, 17, 220, 208, 100, 29, 175, 170, 230, 192, 215, 235, | |
150, 159, 36, 223, 38, 200, 132, 54, 228, 146, 218, 234, 117, 203, 29, 232, | |
144, 238, 22, 150, 201, 117, 62, 207, 164, 13, 137, 245, 127, 67, 247, 28, | |
155, 43, 203, 107, 233, 53, 143, 46}, | |
{242, 93, 169, 50, 144, 210, 39, 118, 202, 188, 201, 189, 143, 108, 196, 37, | |
185, 112, 134, 230, 245, 63, 197, 190, 250, 106, 185, 221, 175, 64, 114, | |
71, 161, 44, 147, 6, 27, 218, 51, 63, 87, 10, 40, 130, 188, 17, 163, 31, | |
176, 170, 4, 107, 232, 7, 94, 166, 224, 124, 86, 47, 11, 204}, | |
{220, 228, 173, 89, 251, 149, 159, 56, 89, 33, 147, 244, 154, 36, 73, 127, | |
213, 136, 248, 180, 234, 197, 158, 177, 68, 122, 93, 213, 15, 160, 227, | |
236, 66, 139, 153, 185, 202, 167, 179, 25, 220, 232, 96, 210, 231, 136, | |
223, 239, 181, 241, 59, 52, 172, 25, 49, 232, 211, 189, 64, 54, 108, 153, | |
132, 63, 96, 103, 82, 186}}; | |
int32_t CBC_ErrorCorrection::MODULO_VALUE = 0x12D; | |
int32_t CBC_ErrorCorrection::LOG[256] = {0}; | |
int32_t CBC_ErrorCorrection::ALOG[256] = {0}; | |
void CBC_ErrorCorrection::Initialize() { | |
int32_t p = 1; | |
for (int32_t i = 0; i < 255; i++) { | |
ALOG[i] = p; | |
LOG[p] = i; | |
p <<= 1; | |
if (p >= 256) { | |
p ^= MODULO_VALUE; | |
} | |
} | |
} | |
void CBC_ErrorCorrection::Finalize() {} | |
CBC_ErrorCorrection::CBC_ErrorCorrection() {} | |
CBC_ErrorCorrection::~CBC_ErrorCorrection() {} | |
CFX_WideString CBC_ErrorCorrection::encodeECC200(CFX_WideString codewords, | |
CBC_SymbolInfo* symbolInfo, | |
int32_t& e) { | |
if (codewords.GetLength() != symbolInfo->m_dataCapacity) { | |
e = BCExceptionIllegalArgument; | |
return (FX_WCHAR*)""; | |
} | |
CFX_WideString sb; | |
sb += codewords; | |
int32_t blockCount = symbolInfo->getInterleavedBlockCount(); | |
if (blockCount == 1) { | |
CFX_WideString ecc = | |
createECCBlock(codewords, symbolInfo->m_errorCodewords, e); | |
BC_EXCEPTION_CHECK_ReturnValue(e, (FX_WCHAR*)""); | |
sb += ecc; | |
} else { | |
CFX_Int32Array dataSizes; | |
dataSizes.SetSize(blockCount); | |
CFX_Int32Array errorSizes; | |
errorSizes.SetSize(blockCount); | |
CFX_Int32Array startPos; | |
startPos.SetSize(blockCount); | |
for (int32_t i = 0; i < blockCount; i++) { | |
dataSizes[i] = symbolInfo->getDataLengthForInterleavedBlock(i + 1); | |
errorSizes[i] = symbolInfo->getErrorLengthForInterleavedBlock(i + 1); | |
startPos[i] = 0; | |
if (i > 0) { | |
startPos[i] = startPos[i - 1] + dataSizes[i]; | |
} | |
} | |
for (int32_t block = 0; block < blockCount; block++) { | |
CFX_WideString temp; | |
for (int32_t d = block; d < symbolInfo->m_dataCapacity; d += blockCount) { | |
temp += (FX_WCHAR)codewords.GetAt(d); | |
} | |
CFX_WideString ecc = createECCBlock(temp, errorSizes[block], e); | |
BC_EXCEPTION_CHECK_ReturnValue(e, (FX_WCHAR*)""); | |
int32_t pos = 0; | |
for (int32_t l = block; l < errorSizes[block] * blockCount; | |
l += blockCount) { | |
sb.SetAt(symbolInfo->m_dataCapacity + l, ecc.GetAt(pos++)); | |
} | |
} | |
} | |
return sb; | |
} | |
CFX_WideString CBC_ErrorCorrection::createECCBlock(CFX_WideString codewords, | |
int32_t numECWords, | |
int32_t& e) { | |
return createECCBlock(codewords, 0, codewords.GetLength(), numECWords, e); | |
} | |
CFX_WideString CBC_ErrorCorrection::createECCBlock(CFX_WideString codewords, | |
int32_t start, | |
int32_t len, | |
int32_t numECWords, | |
int32_t& e) { | |
int32_t table = -1; | |
for (int32_t i = 0; i < sizeof(FACTOR_SETS) / sizeof(int32_t); i++) { | |
if (FACTOR_SETS[i] == numECWords) { | |
table = i; | |
break; | |
} | |
} | |
if (table < 0) { | |
e = BCExceptionIllegalArgument; | |
return (FX_WCHAR*)""; | |
} | |
FX_WORD* ecc = FX_Alloc(FX_WORD, numECWords); | |
FXSYS_memset(ecc, 0, numECWords * sizeof(FX_WORD)); | |
for (int32_t l = start; l < start + len; l++) { | |
FX_WORD m = ecc[numECWords - 1] ^ codewords.GetAt(l); | |
for (int32_t k = numECWords - 1; k > 0; k--) { | |
if (m != 0 && FACTORS[table][k] != 0) { | |
ecc[k] = (FX_WORD)(ecc[k - 1] ^ | |
ALOG[(LOG[m] + LOG[FACTORS[table][k]]) % 255]); | |
} else { | |
ecc[k] = ecc[k - 1]; | |
} | |
} | |
if (m != 0 && FACTORS[table][0] != 0) { | |
ecc[0] = (FX_WORD)ALOG[(LOG[m] + LOG[FACTORS[table][0]]) % 255]; | |
} else { | |
ecc[0] = 0; | |
} | |
} | |
CFX_WideString strecc; | |
for (int32_t j = 0; j < numECWords; j++) { | |
strecc += (FX_WCHAR)ecc[numECWords - j - 1]; | |
} | |
FX_Free(ecc); | |
return strecc; | |
} |