Remove barcode reading code.

We never read barcodes, we only write them. Remove code related to barcode
reading.

Review-Url: https://codereview.chromium.org/2071633002

1 files changed, 0 insertions, 349 deletions

diff --git a/xfa/fxbarcode/pdf417/BC_PDF417Detector.cpp b/xfa/fxbarcode/pdf417/BC_PDF417Detector.cpp
deleted file mode 100644
index 064f6cc30b..0000000000
--- a/xfa/fxbarcode/pdf417/BC_PDF417Detector.cpp
+++ /dev/null
@@ -1,349 +0,0 @@
-// 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 2009 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 <memory>
-
-#include "xfa/fxbarcode/BC_BinaryBitmap.h"
-#include "xfa/fxbarcode/BC_ResultPoint.h"
-#include "xfa/fxbarcode/common/BC_CommonBitArray.h"
-#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
-#include "xfa/fxbarcode/pdf417/BC_PDF417Detector.h"
-#include "xfa/fxbarcode/pdf417/BC_PDF417DetectorResult.h"
-#include "xfa/fxbarcode/utils.h"
-
-#define INTEGER_MAX 2147483647
-
-int32_t CBC_Detector::INDEXES_START_PATTERN[] = {0, 4, 1, 5};
-int32_t CBC_Detector::INDEXES_STOP_PATTERN[] = {6, 2, 7, 3};
-int32_t CBC_Detector::INTEGER_MATH_SHIFT = 8;
-int32_t CBC_Detector::PATTERN_MATCH_RESULT_SCALE_FACTOR = 1
-                                                          << INTEGER_MATH_SHIFT;
-int32_t CBC_Detector::MAX_AVG_VARIANCE =
-    (int32_t)(PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.42f);
-int32_t CBC_Detector::MAX_INDIVIDUAL_VARIANCE =
-    (int32_t)(PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.8f);
-int32_t CBC_Detector::START_PATTERN[] = {8, 1, 1, 1, 1, 1, 1, 3};
-int32_t CBC_Detector::STOP_PATTERN[] = {7, 1, 1, 3, 1, 1, 1, 2, 1};
-int32_t CBC_Detector::MAX_PIXEL_DRIFT = 3;
-int32_t CBC_Detector::MAX_PATTERN_DRIFT = 5;
-int32_t CBC_Detector::SKIPPED_ROW_COUNT_MAX = 25;
-int32_t CBC_Detector::ROW_STEP = 5;
-int32_t CBC_Detector::BARCODE_MIN_HEIGHT = 10;
-
-CBC_Detector::CBC_Detector() {}
-CBC_Detector::~CBC_Detector() {}
-
-CBC_PDF417DetectorResult* CBC_Detector::detect(CBC_BinaryBitmap* image,
-                                               int32_t hints,
-                                               FX_BOOL multiple,
-                                               int32_t& e) {
-  CBC_CommonBitMatrix* bitMatrix = image->GetBlackMatrix(e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  CBC_ResultPointArrayArray* barcodeCoordinates = detect(multiple, bitMatrix);
-  if (barcodeCoordinates->GetSize() == 0) {
-    rotate180(bitMatrix);
-    barcodeCoordinates = detect(multiple, bitMatrix);
-  }
-  if (barcodeCoordinates->GetSize() == 0) {
-    e = BCExceptionUnSupportedBarcode;
-    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
-  }
-  return new CBC_PDF417DetectorResult(bitMatrix, barcodeCoordinates);
-}
-void CBC_Detector::rotate180(CBC_CommonBitMatrix* bitMatrix) {
-  int32_t width = bitMatrix->GetWidth();
-  int32_t height = bitMatrix->GetHeight();
-  CBC_CommonBitArray* firstRowBitArray = new CBC_CommonBitArray(width);
-  CBC_CommonBitArray* secondRowBitArray = new CBC_CommonBitArray(width);
-  CBC_CommonBitArray* tmpBitArray = new CBC_CommonBitArray(width);
-  for (int32_t y = 0; y<(height + 1)>> 1; y++) {
-    CBC_CommonBitArray* temp =
-        bitMatrix->GetRow(height - 1 - y, secondRowBitArray);
-    CBC_CommonBitArray* tempfirstRow = firstRowBitArray;
-    firstRowBitArray = bitMatrix->GetRow(y, tempfirstRow);
-    delete tempfirstRow;
-    CBC_CommonBitArray* row = mirror(temp, tmpBitArray);
-    delete temp;
-    bitMatrix->SetRow(y, row);
-    delete row;
-    CBC_CommonBitArray* rowfirstRow = mirror(firstRowBitArray, tmpBitArray);
-    bitMatrix->SetRow(height - 1 - y, rowfirstRow);
-    delete rowfirstRow;
-  }
-  delete tmpBitArray;
-  delete firstRowBitArray;
-  delete secondRowBitArray;
-}
-CBC_CommonBitArray* CBC_Detector::mirror(CBC_CommonBitArray* input,
-                                         CBC_CommonBitArray* result) {
-  CBC_CommonBitArray* array = new CBC_CommonBitArray(result->GetSize());
-  array->Clear();
-  int32_t size = input->GetSize();
-  for (int32_t i = 0; i < size; i++) {
-    if (input->Get(i)) {
-      array->Set(size - 1 - i);
-    }
-  }
-  return array;
-}
-
-CBC_ResultPointArrayArray* CBC_Detector::detect(
-    FX_BOOL multiple,
-    CBC_CommonBitMatrix* bitMatrix) {
-  CBC_ResultPointArrayArray* barcodeCoordinates = new CBC_ResultPointArrayArray;
-  int32_t row = 0;
-  int32_t column = 0;
-  FX_BOOL foundBarcodeInRow = FALSE;
-  while (row < bitMatrix->GetHeight()) {
-    CBC_ResultPointArray* vertices = findVertices(bitMatrix, row, column);
-    if (!vertices->GetAt(0) && !vertices->GetAt(3)) {
-      if (!foundBarcodeInRow) {
-        delete vertices;
-        break;
-      }
-      foundBarcodeInRow = FALSE;
-      column = 0;
-      for (int32_t i = 0; i < barcodeCoordinates->GetSize(); i++) {
-        CBC_ResultPointArray* barcodeCoordinate = barcodeCoordinates->GetAt(i);
-        if (barcodeCoordinate->GetAt(1)) {
-          row = row > barcodeCoordinate->GetAt(1)->GetY();
-        }
-        if (barcodeCoordinate->GetAt(3)) {
-          row = row > barcodeCoordinate->GetAt(3)->GetY();
-        }
-      }
-      row += ROW_STEP;
-      delete vertices;
-      continue;
-    }
-    foundBarcodeInRow = TRUE;
-    barcodeCoordinates->Add(vertices);
-    if (!multiple) {
-      break;
-    }
-    if (vertices->GetAt(2)) {
-      column = (int32_t)vertices->GetAt(2)->GetX();
-      row = (int32_t)vertices->GetAt(2)->GetY();
-    } else {
-      column = (int32_t)vertices->GetAt(4)->GetX();
-      row = (int32_t)vertices->GetAt(4)->GetY();
-    }
-  }
-  return barcodeCoordinates;
-}
-
-CBC_ResultPointArray* CBC_Detector::findVertices(CBC_CommonBitMatrix* matrix,
-                                                 int32_t startRow,
-                                                 int32_t startColumn) {
-  int32_t height = matrix->GetHeight();
-  int32_t width = matrix->GetWidth();
-  CBC_ResultPointArray* result = new CBC_ResultPointArray;
-  result->SetSize(8);
-  std::unique_ptr<CBC_ResultPointArray> startptr(
-      findRowsWithPattern(matrix, height, width, startRow, startColumn,
-                          START_PATTERN, FX_ArraySize(START_PATTERN)));
-  copyToResult(result, startptr.get(), INDEXES_START_PATTERN,
-               FX_ArraySize(INDEXES_START_PATTERN));
-  if (result->GetAt(4)) {
-    startColumn = (int32_t)result->GetAt(4)->GetX();
-    startRow = (int32_t)result->GetAt(4)->GetY();
-  }
-  std::unique_ptr<CBC_ResultPointArray> stopptr(
-      findRowsWithPattern(matrix, height, width, startRow, startColumn,
-                          STOP_PATTERN, FX_ArraySize(STOP_PATTERN)));
-  copyToResult(result, stopptr.get(), INDEXES_STOP_PATTERN,
-               FX_ArraySize(INDEXES_STOP_PATTERN));
-  return result;
-}
-
-void CBC_Detector::copyToResult(CBC_ResultPointArray* result,
-                                CBC_ResultPointArray* tmpResult,
-                                int32_t* destinationIndexes,
-                                int32_t destinationLength) {
-  for (int32_t i = 0; i < destinationLength; i++) {
-    result->SetAt(destinationIndexes[i], tmpResult->GetAt(i));
-  }
-}
-
-CBC_ResultPointArray* CBC_Detector::findRowsWithPattern(
-    CBC_CommonBitMatrix* matrix,
-    int32_t height,
-    int32_t width,
-    int32_t startRow,
-    int32_t startColumn,
-    int32_t* pattern,
-    int32_t patternLength) {
-  CBC_ResultPointArray* result = new CBC_ResultPointArray;
-  result->SetSize(4);
-  FX_BOOL found = FALSE;
-  CFX_Int32Array counters;
-  counters.SetSize(patternLength);
-  for (; startRow < height; startRow += ROW_STEP) {
-    CFX_Int32Array* loc =
-        findGuardPattern(matrix, startColumn, startRow, width, FALSE, pattern,
-                         patternLength, counters);
-    if (loc) {
-      while (startRow > 0) {
-        CFX_Int32Array* previousRowLoc =
-            findGuardPattern(matrix, startColumn, --startRow, width, FALSE,
-                             pattern, patternLength, counters);
-        if (previousRowLoc) {
-          delete loc;
-          loc = previousRowLoc;
-        } else {
-          startRow++;
-          break;
-        }
-      }
-      result->SetAt(
-          0, new CBC_ResultPoint((FX_FLOAT)loc->GetAt(0), (FX_FLOAT)startRow));
-      result->SetAt(
-          1, new CBC_ResultPoint((FX_FLOAT)loc->GetAt(1), (FX_FLOAT)startRow));
-      found = TRUE;
-      delete loc;
-      break;
-    }
-  }
-  int32_t stopRow = startRow + 1;
-  if (found) {
-    int32_t skippedRowCount = 0;
-    CFX_Int32Array previousRowLoc;
-    previousRowLoc.Add((int32_t)result->GetAt(0)->GetX());
-    previousRowLoc.Add((int32_t)result->GetAt(1)->GetX());
-    for (; stopRow < height; stopRow++) {
-      CFX_Int32Array* loc =
-          findGuardPattern(matrix, previousRowLoc[0], stopRow, width, FALSE,
-                           pattern, patternLength, counters);
-      if (loc && abs(previousRowLoc[0] - loc->GetAt(0)) < MAX_PATTERN_DRIFT &&
-          abs(previousRowLoc[1] - loc->GetAt(1)) < MAX_PATTERN_DRIFT) {
-        previousRowLoc.Copy(*loc);
-        skippedRowCount = 0;
-      } else {
-        if (skippedRowCount > SKIPPED_ROW_COUNT_MAX) {
-          delete loc;
-          break;
-        } else {
-          skippedRowCount++;
-        }
-      }
-      delete loc;
-    }
-    stopRow -= skippedRowCount + 1;
-    result->SetAt(2, new CBC_ResultPoint((FX_FLOAT)previousRowLoc.GetAt(0),
-                                         (FX_FLOAT)stopRow));
-    result->SetAt(3, new CBC_ResultPoint((FX_FLOAT)previousRowLoc.GetAt(1),
-                                         (FX_FLOAT)stopRow));
-  }
-  if (stopRow - startRow < BARCODE_MIN_HEIGHT) {
-    for (int32_t i = 0; i < result->GetSize(); i++) {
-      result->SetAt(i, nullptr);
-    }
-  }
-  return result;
-}
-CFX_Int32Array* CBC_Detector::findGuardPattern(CBC_CommonBitMatrix* matrix,
-                                               int32_t column,
-                                               int32_t row,
-                                               int32_t width,
-                                               FX_BOOL whiteFirst,
-                                               int32_t* pattern,
-                                               int32_t patternLength,
-                                               CFX_Int32Array& counters) {
-  for (int32_t i = 0; i < counters.GetSize(); i++) {
-    counters.SetAt(i, 0);
-  }
-  FX_BOOL isWhite = whiteFirst;
-  int32_t patternStart = column;
-  int32_t pixelDrift = 0;
-  CFX_Int32Array* intarray = new CFX_Int32Array;
-  while (matrix->Get(patternStart, row) && patternStart > 0 &&
-         pixelDrift++ < MAX_PIXEL_DRIFT) {
-    patternStart--;
-  }
-  int32_t x = patternStart;
-  int32_t counterPosition = 0;
-  for (; x < width; x++) {
-    FX_BOOL pixel = matrix->Get(x, row);
-    if (pixel ^ isWhite) {
-      counters[counterPosition]++;
-    } else {
-      if (counterPosition == patternLength - 1) {
-        if (patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE) <
-            MAX_AVG_VARIANCE) {
-          intarray->Add(patternStart);
-          intarray->Add(x);
-          return intarray;
-        }
-        patternStart += counters[0] + counters[1];
-        for (int32_t l = 2, k = 0; l < patternLength; l++, k++) {
-          counters.SetAt(k, counters.GetAt(l));
-        }
-        counters.SetAt(patternLength - 2, 0);
-        counters.SetAt(patternLength - 1, 0);
-        counterPosition--;
-      } else {
-        counterPosition++;
-      }
-      counters[counterPosition] = 1;
-      isWhite = !isWhite;
-    }
-  }
-  if (counterPosition == patternLength - 1) {
-    if (patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE) <
-        MAX_AVG_VARIANCE) {
-      intarray->Add(patternStart);
-      intarray->Add(x - 1);
-      return intarray;
-    }
-  }
-  delete intarray;
-  return nullptr;
-}
-int32_t CBC_Detector::patternMatchVariance(CFX_Int32Array& counters,
-                                           int32_t* pattern,
-                                           int32_t maxIndividualVariance) {
-  int32_t numCounters = counters.GetSize();
-  int32_t total = 0;
-  int32_t patternLength = 0;
-  for (int32_t i = 0; i < numCounters; i++) {
-    total += counters[i];
-    patternLength += pattern[i];
-  }
-  if (total < patternLength) {
-    return INTEGER_MAX;
-  }
-  int32_t unitBarWidth = (total << INTEGER_MATH_SHIFT) / patternLength;
-  maxIndividualVariance =
-      (maxIndividualVariance * unitBarWidth) >> INTEGER_MATH_SHIFT;
-  int32_t totalVariance = 0;
-  for (int32_t x = 0; x < numCounters; x++) {
-    int32_t counter = counters[x] << INTEGER_MATH_SHIFT;
-    int32_t scaledPattern = pattern[x] * unitBarWidth;
-    int32_t variance = counter > scaledPattern ? counter - scaledPattern
-                                               : scaledPattern - counter;
-    if (variance > maxIndividualVariance) {
-      return INTEGER_MAX;
-    }
-    totalVariance += variance;
-  }
-  return totalVariance / total;
-}