1 files changed, 128 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/qrcode/BC_QRCoderDecoder.cpp b/xfa/src/fxbarcode/qrcode/BC_QRCoderDecoder.cpp
new file mode 100644
index 0000000000..6f16db6ad8
--- /dev/null
+++ b/xfa/src/fxbarcode/qrcode/BC_QRCoderDecoder.cpp
@@ -0,0 +1,128 @@
+// 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 "../barcode.h"
+#include "../common/BC_CommonBitMatrix.h"
+#include "../common/BC_CommonDecoderResult.h"
+#include "../common/reedsolomon/BC_ReedSolomonDecoder.h"
+#include "../common/reedsolomon/BC_ReedSolomonGF256.h"
+#include "BC_QRBitMatrixParser.h"
+#include "BC_QRDataBlock.h"
+#include "BC_QRDecodedBitStreamParser.h"
+#include "BC_QRCoderVersion.h"
+#include "BC_QRCoderFormatInformation.h"
+#include "BC_QRCoderDecoder.h"
+CBC_QRCoderDecoder::CBC_QRCoderDecoder()
+{
+    m_rsDecoder = NULL;
+}
+
+void CBC_QRCoderDecoder::Init()
+{
+    m_rsDecoder = FX_NEW CBC_ReedSolomonDecoder(CBC_ReedSolomonGF256::QRCodeFild);
+}
+CBC_QRCoderDecoder::~CBC_QRCoderDecoder()
+{
+    if(m_rsDecoder != NULL) {
+        delete m_rsDecoder;
+    }
+    m_rsDecoder = NULL;
+}
+CBC_CommonDecoderResult* CBC_QRCoderDecoder::Decode(FX_BOOL* image, FX_INT32 width, FX_INT32 height, FX_INT32 &e)
+{
+    CBC_CommonBitMatrix  bits;
+    bits.Init(width);
+    for(FX_INT32 i = 0; i < width; i++) {
+        for(FX_INT32 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, FX_INT32 byteModeDecode, FX_INT32 &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();
+    CFX_ByteArray* ba = parser.ReadCodewords(e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    CBC_AutoPtr<CFX_ByteArray > codewords(ba);
+    CFX_PtrArray *dataBlocks = CBC_QRDataBlock::GetDataBlocks(codewords.get(), version, ecLevel, e);
+    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    FX_INT32 totalBytes = 0;
+    for (FX_INT32 i = 0; i < dataBlocks->GetSize(); i++) {
+        totalBytes += ((CBC_QRDataBlock*) ((*dataBlocks)[i]))->GetNumDataCodewords();
+    }
+    CFX_ByteArray resultBytes;
+    FX_INT32 resultOffset = 0;
+    for (FX_INT32 j = 0; j < dataBlocks->GetSize(); j++) {
+        CBC_QRDataBlock *dataBlock = (CBC_QRDataBlock *)((*dataBlocks)[j]);
+        CFX_ByteArray* codewordBytes = dataBlock->GetCodewords();
+        FX_INT32 numDataCodewords = dataBlock->GetNumDataCodewords();
+        CorrectErrors(codewordBytes, numDataCodewords, e);
+        if (e != BCExceptionNO) {
+            for(FX_INT32 k = 0; k < dataBlocks->GetSize(); k++) {
+                delete (CBC_QRDataBlock*)(*dataBlocks)[k];
+            }
+            dataBlocks->RemoveAll();
+            delete dataBlocks;
+            dataBlocks = NULL;
+            return NULL;
+        }
+        for(FX_INT32 i = 0; i < numDataCodewords; i++) {
+            resultBytes.Add((*codewordBytes)[i]);
+        }
+    }
+    for(FX_INT32 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, FX_INT32 numDataCodewords, FX_INT32 &e)
+{
+    FX_INT32 numCodewords = codewordBytes->GetSize();
+    CFX_Int32Array codewordsInts;
+    codewordsInts.SetSize(numCodewords);
+    for(FX_INT32 i = 0; i < numCodewords; i++) {
+        codewordsInts[i] = (FX_INT32)((*codewordBytes)[i] & 0xff);
+    }
+    FX_INT32 numECCodewords = codewordBytes->GetSize() - numDataCodewords;
+    m_rsDecoder->Decode(&codewordsInts, numECCodewords, e);
+    BC_EXCEPTION_CHECK_ReturnVoid(e);
+    for(FX_INT32 k = 0; k < numDataCodewords; k++) {
+        (*codewordBytes)[k] = (FX_BYTE) codewordsInts[k];
+    }
+}