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Unified Diff: xfa/src/fxbarcode/src/BC_PDF417Detector.cpp

Issue 842043002: Organize barcode codes into modules. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@xfa
Patch Set: rebase Created 5 years, 11 months ago
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Index: xfa/src/fxbarcode/src/BC_PDF417Detector.cpp
diff --git a/xfa/src/fxbarcode/src/BC_PDF417Detector.cpp b/xfa/src/fxbarcode/src/BC_PDF417Detector.cpp
deleted file mode 100644
index 2c5728e2e7b5b6aa1ddc4dc41d514542d5456e7c..0000000000000000000000000000000000000000
--- a/xfa/src/fxbarcode/src/BC_PDF417Detector.cpp
+++ /dev/null
@@ -1,311 +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 "barcode.h"
-#include "include/BC_ResultPoint.h"
-#include "include/BC_PDF417DetectorResult.h"
-#include "include/BC_BinaryBitmap.h"
-#include "include/BC_CommonBitMatrix.h"
-#include "include/BC_CommonBitArray.h"
-#include "include/BC_PDF417Detector.h"
-#define INTERGER_MAX 2147483647
-FX_INT32 CBC_Detector::INDEXES_START_PATTERN[] = {0, 4, 1, 5};
-FX_INT32 CBC_Detector::INDEXES_STOP_PATTERN[] = {6, 2, 7, 3};
-FX_INT32 CBC_Detector::INTEGER_MATH_SHIFT = 8;
-FX_INT32 CBC_Detector::PATTERN_MATCH_RESULT_SCALE_FACTOR = 1 << INTEGER_MATH_SHIFT;
-FX_INT32 CBC_Detector::MAX_AVG_VARIANCE = (FX_INT32) (PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.42f);
-FX_INT32 CBC_Detector::MAX_INDIVIDUAL_VARIANCE = (FX_INT32) (PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.8f);
-FX_INT32 CBC_Detector::START_PATTERN[] = {8, 1, 1, 1, 1, 1, 1, 3};
-FX_INT32 CBC_Detector::STOP_PATTERN[] = {7, 1, 1, 3, 1, 1, 1, 2, 1};
-FX_INT32 CBC_Detector::MAX_PIXEL_DRIFT = 3;
-FX_INT32 CBC_Detector::MAX_PATTERN_DRIFT = 5;
-FX_INT32 CBC_Detector::SKIPPED_ROW_COUNT_MAX = 25;
-FX_INT32 CBC_Detector::ROW_STEP = 5;
-FX_INT32 CBC_Detector::BARCODE_MIN_HEIGHT = 10;
-CBC_Detector::CBC_Detector()
-{
-}
-CBC_Detector::~CBC_Detector()
-{
-}
-CBC_PDF417DetectorResult* CBC_Detector::detect(CBC_BinaryBitmap* image, FX_INT32 hints, FX_BOOL multiple, FX_INT32 &e)
-{
- CBC_CommonBitMatrix* bitMatrix = image->GetBlackMatrix(e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- CFX_PtrArray* 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, NULL);
- }
- CBC_PDF417DetectorResult* detectorResult = FX_NEW CBC_PDF417DetectorResult(bitMatrix, barcodeCoordinates);
- return detectorResult;
-}
-void CBC_Detector::rotate180(CBC_CommonBitMatrix* bitMatrix)
-{
- FX_INT32 width = bitMatrix->GetWidth();
- FX_INT32 height = bitMatrix->GetHeight();
- CBC_CommonBitArray* firstRowBitArray = FX_NEW CBC_CommonBitArray(width);
- CBC_CommonBitArray* secondRowBitArray = FX_NEW CBC_CommonBitArray(width);
- CBC_CommonBitArray* tmpBitArray = FX_NEW CBC_CommonBitArray(width);
- for (FX_INT32 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 = FX_NEW CBC_CommonBitArray(result->GetSize());
- array->Clear();
- FX_INT32 size = input->GetSize();
- for (FX_INT32 i = 0; i < size; i++) {
- if (input->Get(i)) {
- array->Set(size - 1 - i);
- }
- }
- return array;
-}
-CFX_PtrArray* CBC_Detector::detect(FX_BOOL multiple, CBC_CommonBitMatrix* bitMatrix)
-{
- CFX_PtrArray* barcodeCoordinates = FX_NEW CFX_PtrArray;
- FX_INT32 row = 0;
- FX_INT32 column = 0;
- FX_BOOL foundBarcodeInRow = FALSE;
- while (row < bitMatrix->GetHeight()) {
- CFX_PtrArray* vertices = findVertices(bitMatrix, row, column);
- if (vertices->GetAt(0) == NULL && vertices->GetAt(3) == NULL) {
- if (!foundBarcodeInRow) {
- if (vertices) {
- delete(vertices);
- }
- break;
- }
- foundBarcodeInRow = FALSE;
- column = 0;
- for (FX_INT32 i = 0; i < barcodeCoordinates->GetSize(); i++) {
- CFX_PtrArray* barcodeCoordinate = (CFX_PtrArray*)barcodeCoordinates->GetAt(i);
- if (barcodeCoordinate->GetAt(1) != NULL) {
- row = row > ((CBC_ResultPoint*)barcodeCoordinate->GetAt(1))->GetY();
- }
- if (barcodeCoordinate->GetAt(3) != NULL) {
- row = row > ((CBC_ResultPoint*)barcodeCoordinate->GetAt(3))->GetY();
- }
- }
- row += ROW_STEP;
- if (vertices) {
- delete(vertices);
- }
- continue;
- }
- foundBarcodeInRow = TRUE;
- barcodeCoordinates->Add(vertices);
- if (!multiple) {
- break;
- }
- if (vertices->GetAt(2) != NULL) {
- column = (FX_INT32) ((CBC_ResultPoint*)vertices->GetAt(2))->GetX();
- row = (FX_INT32) ((CBC_ResultPoint*)vertices->GetAt(2))->GetY();
- } else {
- column = (FX_INT32) ((CBC_ResultPoint*)vertices->GetAt(4))->GetX();
- row = (FX_INT32) ((CBC_ResultPoint*)vertices->GetAt(4))->GetY();
- }
- }
- return barcodeCoordinates;
-}
-CFX_PtrArray* CBC_Detector::findVertices(CBC_CommonBitMatrix* matrix, FX_INT32 startRow, FX_INT32 startColumn)
-{
- FX_INT32 height = matrix->GetHeight();
- FX_INT32 width = matrix->GetWidth();
- CFX_PtrArray* result = FX_NEW CFX_PtrArray;
- result->SetSize(8);
- CFX_PtrArray* startptr = findRowsWithPattern(matrix, height, width, startRow, startColumn, START_PATTERN, sizeof(START_PATTERN) / sizeof(START_PATTERN[0]));
- copyToResult(result, startptr, INDEXES_START_PATTERN, sizeof(INDEXES_START_PATTERN) / sizeof(INDEXES_START_PATTERN[0]));
- startptr->RemoveAll();
- delete startptr;
- if (result->GetAt(4) != NULL) {
- startColumn = (FX_INT32) ((CBC_ResultPoint*)result->GetAt(4))->GetX();
- startRow = (FX_INT32) ((CBC_ResultPoint*)result->GetAt(4))->GetY();
- }
- CFX_PtrArray* stopptr = findRowsWithPattern(matrix, height, width, startRow, startColumn, STOP_PATTERN, sizeof(STOP_PATTERN) / sizeof(STOP_PATTERN[0]));
- copyToResult(result, stopptr, INDEXES_STOP_PATTERN, sizeof(INDEXES_STOP_PATTERN) / sizeof(INDEXES_STOP_PATTERN[0]));
- stopptr->RemoveAll();
- delete stopptr;
- return result;
-}
-void CBC_Detector::copyToResult(CFX_PtrArray *result, CFX_PtrArray* tmpResult, FX_INT32* destinationIndexes, FX_INT32 destinationLength)
-{
- for (FX_INT32 i = 0; i < destinationLength; i++) {
- result->SetAt(destinationIndexes[i], tmpResult->GetAt(i));
- }
-}
-CFX_PtrArray* CBC_Detector::findRowsWithPattern(CBC_CommonBitMatrix* matrix, FX_INT32 height, FX_INT32 width, FX_INT32 startRow, FX_INT32 startColumn, FX_INT32* pattern, FX_INT32 patternLength)
-{
- CFX_PtrArray* result = FX_NEW CFX_PtrArray;
- 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 != NULL) {
- while (startRow > 0) {
- CFX_Int32Array* previousRowLoc = findGuardPattern(matrix, startColumn, --startRow, width, FALSE, pattern, patternLength, counters);
- if (previousRowLoc != NULL) {
- delete loc;
- loc = previousRowLoc;
- } else {
- startRow++;
- break;
- }
- }
- result->SetAt(0, FX_NEW CBC_ResultPoint((FX_FLOAT)loc->GetAt(0), (FX_FLOAT)startRow));
- result->SetAt(1, FX_NEW CBC_ResultPoint((FX_FLOAT)loc->GetAt(1), (FX_FLOAT)startRow));
- found = TRUE;
- delete loc;
- break;
- }
- }
- FX_INT32 stopRow = startRow + 1;
- if (found) {
- FX_INT32 skippedRowCount = 0;
- CFX_Int32Array previousRowLoc;
- previousRowLoc.Add((FX_INT32)((CBC_ResultPoint*)result->GetAt(0))->GetX());
- previousRowLoc.Add((FX_INT32)((CBC_ResultPoint*)result->GetAt(1))->GetX());
- for (; stopRow < height; stopRow++) {
- CFX_Int32Array* loc = findGuardPattern(matrix, previousRowLoc[0], stopRow, width, FALSE, pattern, patternLength, counters);
- if (loc != NULL &&
- 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, FX_NEW CBC_ResultPoint((FX_FLOAT)previousRowLoc.GetAt(0), (FX_FLOAT)stopRow));
- result->SetAt(3, FX_NEW CBC_ResultPoint((FX_FLOAT)previousRowLoc.GetAt(1), (FX_FLOAT)stopRow));
- }
- if (stopRow - startRow < BARCODE_MIN_HEIGHT) {
- for (FX_INT32 i = 0; i < result->GetSize(); i++) {
- result->SetAt(i, NULL);
- }
- }
- return result;
-}
-CFX_Int32Array* CBC_Detector::findGuardPattern(CBC_CommonBitMatrix* matrix, FX_INT32 column, FX_INT32 row, FX_INT32 width, FX_BOOL whiteFirst, FX_INT32* pattern, FX_INT32 patternLength, CFX_Int32Array &counters)
-{
- for (FX_INT32 i = 0; i < counters.GetSize(); i++) {
- counters.SetAt(i, 0);
- }
- FX_BOOL isWhite = whiteFirst;
- FX_INT32 patternStart = column;
- FX_INT32 pixelDrift = 0;
- CFX_Int32Array* intarray = FX_NEW CFX_Int32Array;
- while (matrix->Get(patternStart, row) && patternStart > 0 && pixelDrift++ < MAX_PIXEL_DRIFT) {
- patternStart--;
- }
- FX_INT32 x = patternStart;
- FX_INT32 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 (FX_INT32 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 NULL;
-}
-FX_INT32 CBC_Detector::patternMatchVariance(CFX_Int32Array &counters, FX_INT32* pattern, FX_INT32 maxIndividualVariance)
-{
- FX_INT32 numCounters = counters.GetSize();
- FX_INT32 total = 0;
- FX_INT32 patternLength = 0;
- for (FX_INT32 i = 0; i < numCounters; i++) {
- total += counters[i];
- patternLength += pattern[i];
- }
- if (total < patternLength) {
- return INTERGER_MAX;
- }
- FX_INT32 unitBarWidth = (total << INTEGER_MATH_SHIFT) / patternLength;
- maxIndividualVariance = (maxIndividualVariance * unitBarWidth) >> INTEGER_MATH_SHIFT;
- FX_INT32 totalVariance = 0;
- for (FX_INT32 x = 0; x < numCounters; x++) {
- FX_INT32 counter = counters[x] << INTEGER_MATH_SHIFT;
- FX_INT32 scaledPattern = pattern[x] * unitBarWidth;
- FX_INT32 variance = counter > scaledPattern ? counter - scaledPattern : scaledPattern - counter;
- if (variance > maxIndividualVariance) {
- return INTERGER_MAX;
- }
- totalVariance += variance;
- }
- return totalVariance / total;
-}
-
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