Index: xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp |
diff --git a/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp b/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp |
index 97840bf2d820d7ff8ad79b250bfbca7a129f2b26..821cf07825cbfd5f4191ea872e0cc28a434b41d3 100644 |
--- a/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp |
+++ b/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp |
@@ -1,114 +1,114 @@ |
-// 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 2013 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/src/fxbarcode/barcode.h" |
-#include "BC_PDF417Common.h" |
-#include "BC_PDF417CodewordDecoder.h" |
-#define SYMBOL_TABLE_Length 2787 |
-#define Float_MAX_VALUE 2147483647 |
-FX_FLOAT CBC_PDF417CodewordDecoder::RATIOS_TABLE[2787][8] = {{0}}; |
-CBC_PDF417CodewordDecoder::CBC_PDF417CodewordDecoder() {} |
-CBC_PDF417CodewordDecoder::~CBC_PDF417CodewordDecoder() {} |
-void CBC_PDF417CodewordDecoder::Initialize() { |
- for (int32_t i = 0; i < SYMBOL_TABLE_Length; i++) { |
- int32_t currentSymbol = CBC_PDF417Common::SYMBOL_TABLE[i]; |
- int32_t currentBit = currentSymbol & 0x1; |
- for (int32_t j = 0; j < CBC_PDF417Common::BARS_IN_MODULE; j++) { |
- FX_FLOAT size = 0.0f; |
- while ((currentSymbol & 0x1) == currentBit) { |
- size += 1.0f; |
- currentSymbol >>= 1; |
- } |
- currentBit = currentSymbol & 0x1; |
- RATIOS_TABLE[i][CBC_PDF417Common::BARS_IN_MODULE - j - 1] = |
- size / CBC_PDF417Common::MODULES_IN_CODEWORD; |
- } |
- } |
-} |
-void CBC_PDF417CodewordDecoder::Finalize() {} |
-int32_t CBC_PDF417CodewordDecoder::getDecodedValue( |
- CFX_Int32Array& moduleBitCount) { |
- CFX_Int32Array* array = sampleBitCounts(moduleBitCount); |
- int32_t decodedValue = getDecodedCodewordValue(*array); |
- delete array; |
- if (decodedValue != -1) { |
- return decodedValue; |
- } |
- return getClosestDecodedValue(moduleBitCount); |
-} |
-CFX_Int32Array* CBC_PDF417CodewordDecoder::sampleBitCounts( |
- CFX_Int32Array& moduleBitCount) { |
- FX_FLOAT bitCountSum = |
- (FX_FLOAT)CBC_PDF417Common::getBitCountSum(moduleBitCount); |
- CFX_Int32Array* bitCount = new CFX_Int32Array(); |
- bitCount->SetSize(CBC_PDF417Common::BARS_IN_MODULE); |
- int32_t bitCountIndex = 0; |
- int32_t sumPreviousBits = 0; |
- for (int32_t i = 0; i < CBC_PDF417Common::MODULES_IN_CODEWORD; i++) { |
- FX_FLOAT sampleIndex = |
- bitCountSum / (2 * CBC_PDF417Common::MODULES_IN_CODEWORD) + |
- (i * bitCountSum) / CBC_PDF417Common::MODULES_IN_CODEWORD; |
- if (sumPreviousBits + moduleBitCount.GetAt(bitCountIndex) <= sampleIndex) { |
- sumPreviousBits += moduleBitCount.GetAt(bitCountIndex); |
- bitCountIndex++; |
- } |
- bitCount->SetAt(bitCountIndex, bitCount->GetAt(bitCountIndex) + 1); |
- } |
- return bitCount; |
-} |
-int32_t CBC_PDF417CodewordDecoder::getDecodedCodewordValue( |
- CFX_Int32Array& moduleBitCount) { |
- int32_t decodedValue = getBitValue(moduleBitCount); |
- return CBC_PDF417Common::getCodeword(decodedValue) == -1 ? -1 : decodedValue; |
-} |
-int32_t CBC_PDF417CodewordDecoder::getBitValue(CFX_Int32Array& moduleBitCount) { |
- int64_t result = 0; |
- for (int32_t i = 0; i < moduleBitCount.GetSize(); i++) { |
- for (int32_t bit = 0; bit < moduleBitCount.GetAt(i); bit++) { |
- result = (result << 1) | (i % 2 == 0 ? 1 : 0); |
- } |
- } |
- return (int32_t)result; |
-} |
-int32_t CBC_PDF417CodewordDecoder::getClosestDecodedValue( |
- CFX_Int32Array& moduleBitCount) { |
- int32_t bitCountSum = CBC_PDF417Common::getBitCountSum(moduleBitCount); |
- CFX_FloatArray bitCountRatios; |
- bitCountRatios.SetSize(CBC_PDF417Common::BARS_IN_MODULE); |
- for (int32_t i = 0; i < bitCountRatios.GetSize(); i++) { |
- bitCountRatios[i] = moduleBitCount.GetAt(i) / (FX_FLOAT)bitCountSum; |
- } |
- FX_FLOAT bestMatchError = (FX_FLOAT)Float_MAX_VALUE; |
- int32_t bestMatch = -1; |
- for (int32_t j = 0; j < SYMBOL_TABLE_Length; j++) { |
- FX_FLOAT error = 0.0f; |
- for (int32_t k = 0; k < CBC_PDF417Common::BARS_IN_MODULE; k++) { |
- FX_FLOAT diff = RATIOS_TABLE[j][k] - bitCountRatios[k]; |
- error += diff * diff; |
- } |
- if (error < bestMatchError) { |
- bestMatchError = error; |
- bestMatch = CBC_PDF417Common::SYMBOL_TABLE[j]; |
- } |
- } |
- return bestMatch; |
-} |
+// 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 2013 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/src/fxbarcode/barcode.h" |
+#include "BC_PDF417Common.h" |
+#include "BC_PDF417CodewordDecoder.h" |
+#define SYMBOL_TABLE_Length 2787 |
+#define Float_MAX_VALUE 2147483647 |
+FX_FLOAT CBC_PDF417CodewordDecoder::RATIOS_TABLE[2787][8] = {{0}}; |
+CBC_PDF417CodewordDecoder::CBC_PDF417CodewordDecoder() {} |
+CBC_PDF417CodewordDecoder::~CBC_PDF417CodewordDecoder() {} |
+void CBC_PDF417CodewordDecoder::Initialize() { |
+ for (int32_t i = 0; i < SYMBOL_TABLE_Length; i++) { |
+ int32_t currentSymbol = CBC_PDF417Common::SYMBOL_TABLE[i]; |
+ int32_t currentBit = currentSymbol & 0x1; |
+ for (int32_t j = 0; j < CBC_PDF417Common::BARS_IN_MODULE; j++) { |
+ FX_FLOAT size = 0.0f; |
+ while ((currentSymbol & 0x1) == currentBit) { |
+ size += 1.0f; |
+ currentSymbol >>= 1; |
+ } |
+ currentBit = currentSymbol & 0x1; |
+ RATIOS_TABLE[i][CBC_PDF417Common::BARS_IN_MODULE - j - 1] = |
+ size / CBC_PDF417Common::MODULES_IN_CODEWORD; |
+ } |
+ } |
+} |
+void CBC_PDF417CodewordDecoder::Finalize() {} |
+int32_t CBC_PDF417CodewordDecoder::getDecodedValue( |
+ CFX_Int32Array& moduleBitCount) { |
+ CFX_Int32Array* array = sampleBitCounts(moduleBitCount); |
+ int32_t decodedValue = getDecodedCodewordValue(*array); |
+ delete array; |
+ if (decodedValue != -1) { |
+ return decodedValue; |
+ } |
+ return getClosestDecodedValue(moduleBitCount); |
+} |
+CFX_Int32Array* CBC_PDF417CodewordDecoder::sampleBitCounts( |
+ CFX_Int32Array& moduleBitCount) { |
+ FX_FLOAT bitCountSum = |
+ (FX_FLOAT)CBC_PDF417Common::getBitCountSum(moduleBitCount); |
+ CFX_Int32Array* bitCount = new CFX_Int32Array(); |
+ bitCount->SetSize(CBC_PDF417Common::BARS_IN_MODULE); |
+ int32_t bitCountIndex = 0; |
+ int32_t sumPreviousBits = 0; |
+ for (int32_t i = 0; i < CBC_PDF417Common::MODULES_IN_CODEWORD; i++) { |
+ FX_FLOAT sampleIndex = |
+ bitCountSum / (2 * CBC_PDF417Common::MODULES_IN_CODEWORD) + |
+ (i * bitCountSum) / CBC_PDF417Common::MODULES_IN_CODEWORD; |
+ if (sumPreviousBits + moduleBitCount.GetAt(bitCountIndex) <= sampleIndex) { |
+ sumPreviousBits += moduleBitCount.GetAt(bitCountIndex); |
+ bitCountIndex++; |
+ } |
+ bitCount->SetAt(bitCountIndex, bitCount->GetAt(bitCountIndex) + 1); |
+ } |
+ return bitCount; |
+} |
+int32_t CBC_PDF417CodewordDecoder::getDecodedCodewordValue( |
+ CFX_Int32Array& moduleBitCount) { |
+ int32_t decodedValue = getBitValue(moduleBitCount); |
+ return CBC_PDF417Common::getCodeword(decodedValue) == -1 ? -1 : decodedValue; |
+} |
+int32_t CBC_PDF417CodewordDecoder::getBitValue(CFX_Int32Array& moduleBitCount) { |
+ int64_t result = 0; |
+ for (int32_t i = 0; i < moduleBitCount.GetSize(); i++) { |
+ for (int32_t bit = 0; bit < moduleBitCount.GetAt(i); bit++) { |
+ result = (result << 1) | (i % 2 == 0 ? 1 : 0); |
+ } |
+ } |
+ return (int32_t)result; |
+} |
+int32_t CBC_PDF417CodewordDecoder::getClosestDecodedValue( |
+ CFX_Int32Array& moduleBitCount) { |
+ int32_t bitCountSum = CBC_PDF417Common::getBitCountSum(moduleBitCount); |
+ CFX_FloatArray bitCountRatios; |
+ bitCountRatios.SetSize(CBC_PDF417Common::BARS_IN_MODULE); |
+ for (int32_t i = 0; i < bitCountRatios.GetSize(); i++) { |
+ bitCountRatios[i] = moduleBitCount.GetAt(i) / (FX_FLOAT)bitCountSum; |
+ } |
+ FX_FLOAT bestMatchError = (FX_FLOAT)Float_MAX_VALUE; |
+ int32_t bestMatch = -1; |
+ for (int32_t j = 0; j < SYMBOL_TABLE_Length; j++) { |
+ FX_FLOAT error = 0.0f; |
+ for (int32_t k = 0; k < CBC_PDF417Common::BARS_IN_MODULE; k++) { |
+ FX_FLOAT diff = RATIOS_TABLE[j][k] - bitCountRatios[k]; |
+ error += diff * diff; |
+ } |
+ if (error < bestMatchError) { |
+ bestMatchError = error; |
+ bestMatch = CBC_PDF417Common::SYMBOL_TABLE[j]; |
+ } |
+ } |
+ return bestMatch; |
+} |