diff options
Diffstat (limited to 'xfa/src/fxbarcode/oned/BC_OnedCodaBarReader.cpp')
| -rw-r--r-- | xfa/src/fxbarcode/oned/BC_OnedCodaBarReader.cpp | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/oned/BC_OnedCodaBarReader.cpp b/xfa/src/fxbarcode/oned/BC_OnedCodaBarReader.cpp new file mode 100644 index 0000000000..5d94d7ac06 --- /dev/null +++ b/xfa/src/fxbarcode/oned/BC_OnedCodaBarReader.cpp @@ -0,0 +1,206 @@ +// 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 2008 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 "../BC_Reader.h"
+#include "../common/BC_CommonBitArray.h"
+#include "../oned/BC_OneDReader.h"
+#include "../oned/BC_OnedCode39Reader.h"
+#include "../oned/BC_OnedCodaBarReader.h"
+FX_LPCSTR CBC_OnedCodaBarReader::ALPHABET_STRING = "0123456789-$:/.+ABCDTN";
+const FX_INT32 CBC_OnedCodaBarReader::CHARACTER_ENCODINGS[22] = {
+ 0x003, 0x006, 0x009, 0x060, 0x012, 0x042, 0x021, 0x024, 0x030, 0x048,
+ 0x00c, 0x018, 0x045, 0x051, 0x054, 0x015, 0x01A, 0x029, 0x00B, 0x00E,
+ 0x01A, 0x029
+};
+const FX_INT32 CBC_OnedCodaBarReader::minCharacterLength = 3;
+const FX_CHAR CBC_OnedCodaBarReader::STARTEND_ENCODING[8] = {'E', '*', 'A', 'B', 'C', 'D', 'T', 'N'};
+CBC_OnedCodaBarReader::CBC_OnedCodaBarReader()
+{
+}
+CBC_OnedCodaBarReader::~CBC_OnedCodaBarReader()
+{
+}
+CFX_ByteString CBC_OnedCodaBarReader::DecodeRow(FX_INT32 rowNumber, CBC_CommonBitArray *row, FX_INT32 hints, FX_INT32 &e)
+{
+ CFX_Int32Array *int32Ptr = FindAsteriskPattern(row, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ CBC_AutoPtr<CFX_Int32Array> start(int32Ptr);
+ (*start)[1] = 0;
+ FX_INT32 nextStart = (*start)[1];
+ FX_INT32 end = row->GetSize();
+ while (nextStart < end && !row->Get(nextStart)) {
+ nextStart++;
+ }
+ CFX_ByteString result;
+ CFX_Int32Array counters;
+ counters.SetSize(7);
+ FX_CHAR decodedChar;
+ FX_INT32 lastStart;
+ do {
+ RecordPattern(row, nextStart, &counters, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ decodedChar = ToNarrowWidePattern(&counters);
+ if (decodedChar == '!') {
+ e = BCExceptionNotFound;
+ return "";
+ }
+ result += decodedChar;
+ lastStart = nextStart;
+ for (FX_INT32 i = 0; i < counters.GetSize(); i++) {
+ nextStart += counters[i];
+ }
+ while (nextStart < end && !row->Get(nextStart)) {
+ nextStart++;
+ }
+ } while (nextStart < end);
+ FX_INT32 lastPatternSize = 0;
+ for (FX_INT32 j = 0; j < counters.GetSize(); j++) {
+ lastPatternSize += counters[j];
+ }
+ FX_INT32 whiteSpaceAfterEnd = nextStart - lastStart - lastPatternSize;
+ if (nextStart != end && (whiteSpaceAfterEnd / 2 < lastPatternSize)) {
+ e = BCExceptionNotFound;
+ return "";
+ }
+ if (result.GetLength() < 2) {
+ e = BCExceptionNotFound;
+ return "";
+ }
+ FX_CHAR startchar = result[0];
+ if (!ArrayContains(STARTEND_ENCODING, startchar)) {
+ e = BCExceptionNotFound;
+ return "";
+ }
+ FX_INT32 len = result.GetLength();
+ CFX_ByteString temp = result;
+ for (FX_INT32 k = 1; k < result.GetLength(); k++) {
+ if (ArrayContains(STARTEND_ENCODING, result[k])) {
+ if ((k + 1) != result.GetLength()) {
+ result.Delete(1, k);
+ k = 1;
+ }
+ }
+ }
+ if (result.GetLength() < 5) {
+ FX_INT32 index = temp.Find(result.Mid(1, result.GetLength() - 1));
+ if (index == len - (result.GetLength() - 1)) {
+ e = BCExceptionNotFound;
+ return "";
+ }
+ }
+ if (result.GetLength() > minCharacterLength) {
+ result = result.Mid(1, result.GetLength() - 2);
+ } else {
+ e = BCExceptionNotFound;
+ return "";
+ }
+ return result;
+}
+CFX_Int32Array *CBC_OnedCodaBarReader::FindAsteriskPattern(CBC_CommonBitArray *row, FX_INT32 &e)
+{
+ FX_INT32 width = row->GetSize();
+ FX_INT32 rowOffset = 0;
+ while (rowOffset < width) {
+ if (row->Get(rowOffset)) {
+ break;
+ }
+ rowOffset++;
+ }
+ FX_INT32 counterPosition = 0;
+ CFX_Int32Array counters;
+ counters.SetSize(7);
+ FX_INT32 patternStart = rowOffset;
+ FX_BOOL isWhite = FALSE;
+ FX_INT32 patternLength = counters.GetSize();
+ for (FX_INT32 i = rowOffset; i < width; i++) {
+ FX_BOOL pixel = row->Get(i);
+ if (pixel ^ isWhite) {
+ counters[counterPosition]++;
+ } else {
+ if (counterPosition == patternLength - 1) {
+ if (ArrayContains(STARTEND_ENCODING, ToNarrowWidePattern(&counters))) {
+ FX_BOOL btemp3 = row->IsRange(FX_MAX(0, patternStart - (i - patternStart) / 2), patternStart, FALSE, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ if (btemp3) {
+ CFX_Int32Array *result = FX_NEW CFX_Int32Array();
+ result->SetSize(2);
+ (*result)[0] = patternStart;
+ (*result)[1] = i;
+ return result;
+ }
+ }
+ patternStart += counters[0] + counters[1];
+ for (FX_INT32 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;
+ }
+ }
+ e = BCExceptionNotFound;
+ return NULL;
+}
+FX_BOOL CBC_OnedCodaBarReader::ArrayContains(const FX_CHAR array[], FX_CHAR key)
+{
+ for(FX_INT32 i = 0; i < 8; i++) {
+ if(array[i] == key) {
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+FX_CHAR CBC_OnedCodaBarReader::ToNarrowWidePattern(CFX_Int32Array *counter)
+{
+ FX_INT32 numCounters = counter->GetSize();
+ if (numCounters < 1) {
+ return '!';
+ }
+ FX_INT32 averageCounter = 0;
+ FX_INT32 totalCounters = 0;
+ for (FX_INT32 i = 0; i < numCounters; i++) {
+ totalCounters += (*counter)[i];
+ }
+ averageCounter = totalCounters / numCounters;
+ FX_INT32 pattern = 0;
+ FX_INT32 wideCounters = 0;
+ for (FX_INT32 j = 0; j < numCounters; j++) {
+ if ((*counter)[j] > averageCounter) {
+ pattern |= 1 << (numCounters - 1 - j);
+ wideCounters++;
+ }
+ }
+ if ((wideCounters == 2) || (wideCounters == 3)) {
+ for (FX_INT32 k = 0; k < 22; k++) {
+ if (CHARACTER_ENCODINGS[k] == pattern) {
+ return (ALPHABET_STRING)[k];
+ }
+ }
+ }
+ return '!';
+}
|