1 files changed, 175 insertions, 0 deletions
diff --git a/xfa/fxbarcode/datamatrix/BC_ErrorCorrection.cpp b/xfa/fxbarcode/datamatrix/BC_ErrorCorrection.cpp
new file mode 100644
index 0000000000..98c0599e50
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+++ b/xfa/fxbarcode/datamatrix/BC_ErrorCorrection.cpp
@@ -0,0 +1,175 @@
+// 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/fxbarcode/datamatrix/BC_Encoder.h"
+#include "xfa/fxbarcode/datamatrix/BC_ErrorCorrection.h"
+#include "xfa/fxbarcode/datamatrix/BC_SymbolInfo.h"
+#include "xfa/fxbarcode/datamatrix/BC_SymbolShapeHint.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;
+}