bool UPCEReader::decodeEnd(Ref<BitArray> row, int endStart, int* endGuardBegin,
int* endGuardEnd) {
return findGuardPattern(row, endStart, true, MIDDLE_END_PATTERN,
sizeof(MIDDLE_END_PATTERN) / sizeof(int), endGuardBegin, endGuardEnd);
}
int* UPCEANReader::decodeEnd(Ref<BitArray> row, int endStart){
return findGuardPattern(row, endStart, false, START_END_PATTERN, sizeof(START_END_PATTERN)/sizeof(int));
}
CFX_PtrArray* CBC_Detector::findRowsWithPattern(CBC_CommonBitMatrix* matrix,
int32_t height,
int32_t width,
int32_t startRow,
int32_t startColumn,
int32_t* pattern,
int32_t patternLength) {
CFX_PtrArray* result = 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, 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)((CBC_ResultPoint*)result->GetAt(0))->GetX());
previousRowLoc.Add((int32_t)((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, 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, NULL);
}
}
return result;
}
