diff options
Diffstat (limited to 'xfa/src/fxbarcode/oned/BC_OneDimReader.cpp')
| -rw-r--r-- | xfa/src/fxbarcode/oned/BC_OneDimReader.cpp | 357 |
1 files changed, 171 insertions, 186 deletions
diff --git a/xfa/src/fxbarcode/oned/BC_OneDimReader.cpp b/xfa/src/fxbarcode/oned/BC_OneDimReader.cpp index a2dd7a1972..b0ad088637 100644 --- a/xfa/src/fxbarcode/oned/BC_OneDimReader.cpp +++ b/xfa/src/fxbarcode/oned/BC_OneDimReader.cpp @@ -30,206 +30,191 @@ const int32_t CBC_OneDimReader::MAX_INDIVIDUAL_VARIANCE = (int32_t)(256 * 0.7f); const int32_t CBC_OneDimReader::START_END_PATTERN[3] = {1, 1, 1};
const int32_t CBC_OneDimReader::MIDDLE_PATTERN[5] = {1, 1, 1, 1, 1};
const int32_t CBC_OneDimReader::L_PATTERNS[10][4] = {
- {3, 2, 1, 1},
- {2, 2, 2, 1},
- {2, 1, 2, 2},
- {1, 4, 1, 1},
- {1, 1, 3, 2},
- {1, 2, 3, 1},
- {1, 1, 1, 4},
- {1, 3, 1, 2},
- {1, 2, 1, 3},
- {3, 1, 1, 2}
-};
+ {3, 2, 1, 1}, {2, 2, 2, 1}, {2, 1, 2, 2}, {1, 4, 1, 1}, {1, 1, 3, 2},
+ {1, 2, 3, 1}, {1, 1, 1, 4}, {1, 3, 1, 2}, {1, 2, 1, 3}, {3, 1, 1, 2}};
const int32_t CBC_OneDimReader::L_AND_G_PATTERNS[20][4] = {
- {3, 2, 1, 1},
- {2, 2, 2, 1},
- {2, 1, 2, 2},
- {1, 4, 1, 1},
- {1, 1, 3, 2},
- {1, 2, 3, 1},
- {1, 1, 1, 4},
- {1, 3, 1, 2},
- {1, 2, 1, 3},
- {3, 1, 1, 2},
- {1, 1, 2, 3},
- {1, 2, 2, 2},
- {2, 2, 1, 2},
- {1, 1, 4, 1},
- {2, 3, 1, 1},
- {1, 3, 2, 1},
- {4, 1, 1, 1},
- {2, 1, 3, 1},
- {3, 1, 2, 1},
- {2, 1, 1, 3}
-};
-CBC_OneDimReader::CBC_OneDimReader()
-{
-}
-CBC_OneDimReader::~CBC_OneDimReader()
-{
-}
-CFX_Int32Array *CBC_OneDimReader::FindStartGuardPattern(CBC_CommonBitArray *row, int32_t &e)
-{
- FX_BOOL foundStart = FALSE;
- CFX_Int32Array *startRange = NULL;
- CFX_Int32Array startEndPattern;
- startEndPattern.SetSize(3);
- startEndPattern[0] = START_END_PATTERN[0];
- startEndPattern[1] = START_END_PATTERN[1];
- startEndPattern[2] = START_END_PATTERN[2];
- int32_t nextStart = 0;
- while (!foundStart) {
- if(startRange != NULL) {
- delete startRange;
- startRange = NULL;
- }
- startRange = FindGuardPattern(row, nextStart, FALSE, &startEndPattern, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- int32_t start = (*startRange)[0];
- nextStart = (*startRange)[1];
- if (start <= 1) {
- break;
- }
- int32_t quietStart = start - (nextStart - start);
- if (quietStart >= 0) {
- FX_BOOL booT = row->IsRange(quietStart, start, FALSE, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- foundStart = booT;
- }
+ {3, 2, 1, 1}, {2, 2, 2, 1}, {2, 1, 2, 2}, {1, 4, 1, 1}, {1, 1, 3, 2},
+ {1, 2, 3, 1}, {1, 1, 1, 4}, {1, 3, 1, 2}, {1, 2, 1, 3}, {3, 1, 1, 2},
+ {1, 1, 2, 3}, {1, 2, 2, 2}, {2, 2, 1, 2}, {1, 1, 4, 1}, {2, 3, 1, 1},
+ {1, 3, 2, 1}, {4, 1, 1, 1}, {2, 1, 3, 1}, {3, 1, 2, 1}, {2, 1, 1, 3}};
+CBC_OneDimReader::CBC_OneDimReader() {}
+CBC_OneDimReader::~CBC_OneDimReader() {}
+CFX_Int32Array* CBC_OneDimReader::FindStartGuardPattern(CBC_CommonBitArray* row,
+ int32_t& e) {
+ FX_BOOL foundStart = FALSE;
+ CFX_Int32Array* startRange = NULL;
+ CFX_Int32Array startEndPattern;
+ startEndPattern.SetSize(3);
+ startEndPattern[0] = START_END_PATTERN[0];
+ startEndPattern[1] = START_END_PATTERN[1];
+ startEndPattern[2] = START_END_PATTERN[2];
+ int32_t nextStart = 0;
+ while (!foundStart) {
+ if (startRange != NULL) {
+ delete startRange;
+ startRange = NULL;
}
- return startRange;
+ startRange = FindGuardPattern(row, nextStart, FALSE, &startEndPattern, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ int32_t start = (*startRange)[0];
+ nextStart = (*startRange)[1];
+ if (start <= 1) {
+ break;
+ }
+ int32_t quietStart = start - (nextStart - start);
+ if (quietStart >= 0) {
+ FX_BOOL booT = row->IsRange(quietStart, start, FALSE, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ foundStart = booT;
+ }
+ }
+ return startRange;
}
-CFX_ByteString CBC_OneDimReader::DecodeRow(int32_t rowNumber, CBC_CommonBitArray *row, int32_t hints, int32_t &e)
-{
- CFX_Int32Array* StartPattern = FindStartGuardPattern(row, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, "");
- CBC_AutoPtr<CFX_Int32Array > result(StartPattern);
- CFX_ByteString temp = DecodeRow(rowNumber, row, result.get(), hints, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, "");
- return temp;
+CFX_ByteString CBC_OneDimReader::DecodeRow(int32_t rowNumber,
+ CBC_CommonBitArray* row,
+ int32_t hints,
+ int32_t& e) {
+ CFX_Int32Array* StartPattern = FindStartGuardPattern(row, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ CBC_AutoPtr<CFX_Int32Array> result(StartPattern);
+ CFX_ByteString temp = DecodeRow(rowNumber, row, result.get(), hints, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ return temp;
}
-CFX_ByteString CBC_OneDimReader::DecodeRow(int32_t rowNumber, CBC_CommonBitArray *row, CFX_Int32Array *startGuardRange, int32_t hints, int32_t &e)
-{
- CFX_ByteString result;
- int32_t endStart = DecodeMiddle(row, startGuardRange, result, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, "");
- FX_BOOL b = CheckChecksum(result, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, "");
- if (!b) {
- e = BCExceptionChecksumException;
- return "";
- }
- return result;
+CFX_ByteString CBC_OneDimReader::DecodeRow(int32_t rowNumber,
+ CBC_CommonBitArray* row,
+ CFX_Int32Array* startGuardRange,
+ int32_t hints,
+ int32_t& e) {
+ CFX_ByteString result;
+ int32_t endStart = DecodeMiddle(row, startGuardRange, result, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ FX_BOOL b = CheckChecksum(result, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ if (!b) {
+ e = BCExceptionChecksumException;
+ return "";
+ }
+ return result;
}
-FX_BOOL CBC_OneDimReader::CheckChecksum(CFX_ByteString &s, int32_t &e)
-{
- FX_BOOL temp = CheckStandardUPCEANChecksum(s, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
- return temp;
+FX_BOOL CBC_OneDimReader::CheckChecksum(CFX_ByteString& s, int32_t& e) {
+ FX_BOOL temp = CheckStandardUPCEANChecksum(s, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
+ return temp;
}
-FX_BOOL CBC_OneDimReader::CheckStandardUPCEANChecksum(CFX_ByteString &s, int32_t &e)
-{
- int32_t length = s.GetLength();
- if (length == 0) {
- return FALSE;
- }
- int32_t sum = 0;
- for (int32_t i = length - 2; i >= 0; i -= 2) {
- int32_t digit = (int32_t) s[i] - (int32_t) '0';
- if (digit < 0 || digit > 9) {
- e = BCExceptionFormatException;
- return FALSE;
- }
- sum += digit;
+FX_BOOL CBC_OneDimReader::CheckStandardUPCEANChecksum(CFX_ByteString& s,
+ int32_t& e) {
+ int32_t length = s.GetLength();
+ if (length == 0) {
+ return FALSE;
+ }
+ int32_t sum = 0;
+ for (int32_t i = length - 2; i >= 0; i -= 2) {
+ int32_t digit = (int32_t)s[i] - (int32_t)'0';
+ if (digit < 0 || digit > 9) {
+ e = BCExceptionFormatException;
+ return FALSE;
}
- sum *= 3;
- for (int32_t j = length - 1; j >= 0; j -= 2) {
- int32_t digit = (int32_t) s[j] - (int32_t) '0';
- if (digit < 0 || digit > 9) {
- e = BCExceptionFormatException;
- return FALSE;
- }
- sum += digit;
+ sum += digit;
+ }
+ sum *= 3;
+ for (int32_t j = length - 1; j >= 0; j -= 2) {
+ int32_t digit = (int32_t)s[j] - (int32_t)'0';
+ if (digit < 0 || digit > 9) {
+ e = BCExceptionFormatException;
+ return FALSE;
}
- return sum % 10 == 0;
+ sum += digit;
+ }
+ return sum % 10 == 0;
}
-CFX_Int32Array *CBC_OneDimReader::DecodeEnd(CBC_CommonBitArray* row, int32_t endStart, int32_t &e)
-{
- CFX_Int32Array startEndPattern;
- startEndPattern.Add(START_END_PATTERN[0]);
- startEndPattern.Add(START_END_PATTERN[1]);
- startEndPattern.Add(START_END_PATTERN[2]);
- CFX_Int32Array* FindGuard = FindGuardPattern(row, endStart, FALSE, &startEndPattern, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return FindGuard;
+CFX_Int32Array* CBC_OneDimReader::DecodeEnd(CBC_CommonBitArray* row,
+ int32_t endStart,
+ int32_t& e) {
+ CFX_Int32Array startEndPattern;
+ startEndPattern.Add(START_END_PATTERN[0]);
+ startEndPattern.Add(START_END_PATTERN[1]);
+ startEndPattern.Add(START_END_PATTERN[2]);
+ CFX_Int32Array* FindGuard =
+ FindGuardPattern(row, endStart, FALSE, &startEndPattern, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return FindGuard;
}
-CFX_Int32Array *CBC_OneDimReader::FindGuardPattern(CBC_CommonBitArray *row, int32_t rowOffset, FX_BOOL whiteFirst, CFX_Int32Array *pattern, int32_t &e)
-{
- int32_t patternLength = pattern->GetSize();
- CFX_Int32Array counters;
- counters.SetSize(patternLength);
- int32_t width = row->GetSize();
- FX_BOOL isWhite = FALSE;
- while (rowOffset < width) {
- isWhite = !row->Get(rowOffset);
- if (whiteFirst == isWhite) {
- break;
- }
- rowOffset++;
+CFX_Int32Array* CBC_OneDimReader::FindGuardPattern(CBC_CommonBitArray* row,
+ int32_t rowOffset,
+ FX_BOOL whiteFirst,
+ CFX_Int32Array* pattern,
+ int32_t& e) {
+ int32_t patternLength = pattern->GetSize();
+ CFX_Int32Array counters;
+ counters.SetSize(patternLength);
+ int32_t width = row->GetSize();
+ FX_BOOL isWhite = FALSE;
+ while (rowOffset < width) {
+ isWhite = !row->Get(rowOffset);
+ if (whiteFirst == isWhite) {
+ break;
}
- int32_t counterPosition = 0;
- int32_t patternStart = rowOffset;
- for (int32_t x = rowOffset; x < width; x++) {
- FX_BOOL pixel = row->Get(x);
- if (pixel ^ isWhite) {
- counters[counterPosition]++;
- } else {
- if (counterPosition == patternLength - 1) {
- if (PatternMatchVariance(&counters, &(*pattern)[0], MAX_INDIVIDUAL_VARIANCE) < MAX_AVG_VARIANCE) {
- CFX_Int32Array *result = FX_NEW CFX_Int32Array();
- result->SetSize(2);
- (*result)[0] = patternStart;
- (*result)[1] = x;
- return result;
- }
- patternStart += counters[0] + counters[1];
- for (int32_t y = 2; y < patternLength; y++) {
- counters[y - 2] = counters[y];
- }
- counters[patternLength - 2] = 0;
- counters[patternLength - 1] = 0;
- counterPosition--;
- } else {
- counterPosition++;
- }
- counters[counterPosition] = 1;
- isWhite = !isWhite;
+ rowOffset++;
+ }
+ int32_t counterPosition = 0;
+ int32_t patternStart = rowOffset;
+ for (int32_t x = rowOffset; x < width; x++) {
+ FX_BOOL pixel = row->Get(x);
+ if (pixel ^ isWhite) {
+ counters[counterPosition]++;
+ } else {
+ if (counterPosition == patternLength - 1) {
+ if (PatternMatchVariance(&counters, &(*pattern)[0],
+ MAX_INDIVIDUAL_VARIANCE) < MAX_AVG_VARIANCE) {
+ CFX_Int32Array* result = FX_NEW CFX_Int32Array();
+ result->SetSize(2);
+ (*result)[0] = patternStart;
+ (*result)[1] = x;
+ return result;
}
- }
- e = BCExceptionNotFound;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return NULL;
-}
-int32_t CBC_OneDimReader::DecodeDigit(CBC_CommonBitArray *row, CFX_Int32Array *counters, int32_t rowOffset, const int32_t* patterns, int32_t patternLength, int32_t &e)
-{
- RecordPattern(row, rowOffset, counters, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, 0);
- int32_t bestVariance = MAX_AVG_VARIANCE;
- int32_t bestMatch = -1;
- int32_t max = patternLength;
- for (int32_t i = 0; i < max; i++) {
- int32_t variance = PatternMatchVariance(counters, &patterns[i * 4], MAX_INDIVIDUAL_VARIANCE);
- if (variance < bestVariance) {
- bestVariance = variance;
- bestMatch = i;
+ patternStart += counters[0] + counters[1];
+ for (int32_t y = 2; y < patternLength; y++) {
+ counters[y - 2] = counters[y];
}
+ counters[patternLength - 2] = 0;
+ counters[patternLength - 1] = 0;
+ counterPosition--;
+ } else {
+ counterPosition++;
+ }
+ counters[counterPosition] = 1;
+ isWhite = !isWhite;
}
- if (bestMatch >= 0) {
- return bestMatch;
- } else {
- e = BCExceptionNotFound;
- return 0;
+ }
+ e = BCExceptionNotFound;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return NULL;
+}
+int32_t CBC_OneDimReader::DecodeDigit(CBC_CommonBitArray* row,
+ CFX_Int32Array* counters,
+ int32_t rowOffset,
+ const int32_t* patterns,
+ int32_t patternLength,
+ int32_t& e) {
+ RecordPattern(row, rowOffset, counters, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, 0);
+ int32_t bestVariance = MAX_AVG_VARIANCE;
+ int32_t bestMatch = -1;
+ int32_t max = patternLength;
+ for (int32_t i = 0; i < max; i++) {
+ int32_t variance = PatternMatchVariance(counters, &patterns[i * 4],
+ MAX_INDIVIDUAL_VARIANCE);
+ if (variance < bestVariance) {
+ bestVariance = variance;
+ bestMatch = i;
}
+ }
+ if (bestMatch >= 0) {
+ return bestMatch;
+ } else {
+ e = BCExceptionNotFound;
return 0;
+ }
+ return 0;
}
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