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authorDan Sinclair <dsinclair@chromium.org>2016-03-14 14:14:16 -0400
committerDan Sinclair <dsinclair@chromium.org>2016-03-14 14:14:16 -0400
commit1770c021cf998ff1b33855b1397f6ea8ff9f7cd7 (patch)
tree285e39abd4b5872d8cd632b9e331b0667fdc3eae /xfa/fxbarcode/oned/BC_OneDimReader.cpp
parentf766ad219f66543654520f6a1955836f519e26d1 (diff)
downloadpdfium-1770c021cf998ff1b33855b1397f6ea8ff9f7cd7.tar.xz
Move xfa/src up to xfa/.
This CL moves the xfa/src files up to the xfa/ directory and fixes the includes, include guards, and build files. R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1803723002 .
Diffstat (limited to 'xfa/fxbarcode/oned/BC_OneDimReader.cpp')
-rw-r--r--xfa/fxbarcode/oned/BC_OneDimReader.cpp219
1 files changed, 219 insertions, 0 deletions
diff --git a/xfa/fxbarcode/oned/BC_OneDimReader.cpp b/xfa/fxbarcode/oned/BC_OneDimReader.cpp
new file mode 100644
index 0000000000..5187c34af9
--- /dev/null
+++ b/xfa/fxbarcode/oned/BC_OneDimReader.cpp
@@ -0,0 +1,219 @@
+// 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 "xfa/fxbarcode/oned/BC_OneDimReader.h"
+
+#include <memory>
+
+#include "xfa/fxbarcode/BC_Reader.h"
+#include "xfa/fxbarcode/common/BC_CommonBitArray.h"
+#include "xfa/fxbarcode/oned/BC_OneDReader.h"
+#include "xfa/fxbarcode/utils.h"
+
+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}};
+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) {
+ delete 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) {
+ std::unique_ptr<CFX_Int32Array> result(FindStartGuardPattern(row, e));
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ 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;
+ 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::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;
+ }
+ 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;
+ }
+ 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::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++;
+ }
+ 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 = 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;
+ }
+ }
+ 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;
+}