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authordsinclair <dsinclair@chromium.org>2016-06-16 12:29:07 -0700
committerCommit bot <commit-bot@chromium.org>2016-06-16 12:29:07 -0700
commita26153440b46b3b37b7e81435debb296f22769f4 (patch)
tree37b3073d15af7ae2850b5a02be87123feb54a054 /xfa/fxbarcode/pdf417/BC_PDF417Detector.cpp
parent8320ee28f24615d1d619a5db1b7c235ea6f91dde (diff)
downloadpdfium-a26153440b46b3b37b7e81435debb296f22769f4.tar.xz
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
Diffstat (limited to 'xfa/fxbarcode/pdf417/BC_PDF417Detector.cpp')
-rw-r--r--xfa/fxbarcode/pdf417/BC_PDF417Detector.cpp349
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;
-}