Move xfa/src up to xfa/.

xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp

-// 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 <limits>
-
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.h"
-#include "xfa/src/fxbarcode/pdf417/BC_PDF417Common.h"
-
-#define SYMBOL_TABLE_Length 2787
-
-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 = std::numeric_limits<int32_t>::max();
-  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;
-}