| // 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; |
| } |