diff options
Diffstat (limited to 'xfa/fxbarcode/pdf417/BC_PDF417Detector.cpp')
| -rw-r--r-- | xfa/fxbarcode/pdf417/BC_PDF417Detector.cpp | 349 |
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; -} |