1 files changed, 129 insertions, 0 deletions
diff --git a/xfa/fxbarcode/qrcode/BC_QRCoderDecoder.cpp b/xfa/fxbarcode/qrcode/BC_QRCoderDecoder.cpp
new file mode 100644
index 0000000000..1966146805
--- /dev/null
+++ b/xfa/fxbarcode/qrcode/BC_QRCoderDecoder.cpp
@@ -0,0 +1,129 @@
+// 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 2008 ZXing authors
+ *
+ * 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/qrcode/BC_QRCoderDecoder.h"
+
+#include <memory>
+
+#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
+#include "xfa/fxbarcode/common/BC_CommonDecoderResult.h"
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonDecoder.h"
+#include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "xfa/fxbarcode/qrcode/BC_QRBitMatrixParser.h"
+#include "xfa/fxbarcode/qrcode/BC_QRCoderFormatInformation.h"
+#include "xfa/fxbarcode/qrcode/BC_QRCoderVersion.h"
+#include "xfa/fxbarcode/qrcode/BC_QRDataBlock.h"
+#include "xfa/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.h"
+
+CBC_QRCoderDecoder::CBC_QRCoderDecoder() {
+  m_rsDecoder = NULL;
+}
+
+void CBC_QRCoderDecoder::Init() {
+  m_rsDecoder = new CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256::QRCodeFild);
+}
+CBC_QRCoderDecoder::~CBC_QRCoderDecoder() {
+  delete m_rsDecoder;
+}
+CBC_CommonDecoderResult* CBC_QRCoderDecoder::Decode(FX_BOOL* image,
+                                                    int32_t width,
+                                                    int32_t height,
+                                                    int32_t& e) {
+  CBC_CommonBitMatrix bits;
+  bits.Init(width);
+  for (int32_t i = 0; i < width; i++) {
+    for (int32_t j = 0; j < height; j++) {
+      if (image[i * width + j]) {
+        bits.Set(j, i);
+      }
+    }
+  }
+  CBC_CommonDecoderResult* cdr = Decode(&bits, height, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  return cdr;
+}
+CBC_CommonDecoderResult* CBC_QRCoderDecoder::Decode(CBC_CommonBitMatrix* bits,
+                                                    int32_t byteModeDecode,
+                                                    int32_t& e) {
+  CBC_QRBitMatrixParser parser;
+  parser.Init(bits, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  CBC_QRCoderVersion* version = parser.ReadVersion(e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  CBC_QRCoderFormatInformation* temp = parser.ReadFormatInformation(e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  CBC_QRCoderErrorCorrectionLevel* ecLevel = temp->GetErrorCorrectionLevel();
+  std::unique_ptr<CFX_ByteArray> codewords(parser.ReadCodewords(e));
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  CFX_PtrArray* dataBlocks =
+      CBC_QRDataBlock::GetDataBlocks(codewords.get(), version, ecLevel, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  int32_t totalBytes = 0;
+  for (int32_t i = 0; i < dataBlocks->GetSize(); i++) {
+    totalBytes += ((CBC_QRDataBlock*)((*dataBlocks)[i]))->GetNumDataCodewords();
+  }
+  CFX_ByteArray resultBytes;
+  for (int32_t j = 0; j < dataBlocks->GetSize(); j++) {
+    CBC_QRDataBlock* dataBlock = (CBC_QRDataBlock*)((*dataBlocks)[j]);
+    CFX_ByteArray* codewordBytes = dataBlock->GetCodewords();
+    int32_t numDataCodewords = dataBlock->GetNumDataCodewords();
+    CorrectErrors(codewordBytes, numDataCodewords, e);
+    if (e != BCExceptionNO) {
+      for (int32_t k = 0; k < dataBlocks->GetSize(); k++) {
+        delete (CBC_QRDataBlock*)(*dataBlocks)[k];
+      }
+      dataBlocks->RemoveAll();
+      delete dataBlocks;
+      dataBlocks = NULL;
+      return NULL;
+    }
+    for (int32_t i = 0; i < numDataCodewords; i++) {
+      resultBytes.Add((*codewordBytes)[i]);
+    }
+  }
+  for (int32_t k = 0; k < dataBlocks->GetSize(); k++) {
+    delete (CBC_QRDataBlock*)(*dataBlocks)[k];
+  }
+  dataBlocks->RemoveAll();
+  delete dataBlocks;
+  dataBlocks = NULL;
+  CBC_CommonDecoderResult* cdr = CBC_QRDecodedBitStreamParser::Decode(
+      &resultBytes, version, ecLevel, byteModeDecode, e);
+  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  return cdr;
+}
+void CBC_QRCoderDecoder::CorrectErrors(CFX_ByteArray* codewordBytes,
+                                       int32_t numDataCodewords,
+                                       int32_t& e) {
+  int32_t numCodewords = codewordBytes->GetSize();
+  CFX_Int32Array codewordsInts;
+  codewordsInts.SetSize(numCodewords);
+  for (int32_t i = 0; i < numCodewords; i++) {
+    codewordsInts[i] = (int32_t)((*codewordBytes)[i] & 0xff);
+  }
+  int32_t numECCodewords = codewordBytes->GetSize() - numDataCodewords;
+  m_rsDecoder->Decode(&codewordsInts, numECCodewords, e);
+  BC_EXCEPTION_CHECK_ReturnVoid(e);
+  for (int32_t k = 0; k < numDataCodewords; k++) {
+    (*codewordBytes)[k] = (uint8_t)codewordsInts[k];
+  }
+}