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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_OneDReader.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_OneDReader.cpp')
-rw-r--r--xfa/fxbarcode/oned/BC_OneDReader.cpp175
1 files changed, 175 insertions, 0 deletions
diff --git a/xfa/fxbarcode/oned/BC_OneDReader.cpp b/xfa/fxbarcode/oned/BC_OneDReader.cpp
new file mode 100644
index 0000000000..c66ec0bebd
--- /dev/null
+++ b/xfa/fxbarcode/oned/BC_OneDReader.cpp
@@ -0,0 +1,175 @@
+// 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 <algorithm>
+#include <memory>
+
+#include "xfa/fxbarcode/BC_BinaryBitmap.h"
+#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"
+
+CBC_OneDReader::CBC_OneDReader() {}
+CBC_OneDReader::~CBC_OneDReader() {}
+CFX_ByteString CBC_OneDReader::Decode(CBC_BinaryBitmap* image, int32_t& e) {
+ CFX_ByteString strtemp = Decode(image, 0, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ return strtemp;
+}
+CFX_ByteString CBC_OneDReader::Decode(CBC_BinaryBitmap* image,
+ int32_t hints,
+ int32_t& e) {
+ CFX_ByteString strtemp = DeDecode(image, hints, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, "");
+ return strtemp;
+}
+CFX_ByteString CBC_OneDReader::DeDecode(CBC_BinaryBitmap* image,
+ int32_t hints,
+ int32_t& e) {
+ int32_t height = image->GetHeight();
+ int32_t middle = height >> 1;
+ FX_BOOL tryHarder = FALSE;
+ int32_t rowStep = std::max(1, height >> (tryHarder ? 8 : 5));
+ int32_t maxLines;
+ if (tryHarder) {
+ maxLines = height;
+ } else {
+ maxLines = 15;
+ }
+ for (int32_t x = 0; x < maxLines; x++) {
+ int32_t rowStepsAboveOrBelow = (x + 1) >> 1;
+ const bool isAbove = (x & 0x01) == 0;
+ int32_t rowNumber =
+ middle +
+ rowStep * (isAbove ? rowStepsAboveOrBelow : -rowStepsAboveOrBelow);
+ if (rowNumber < 0 || rowNumber >= height) {
+ break;
+ }
+ std::unique_ptr<CBC_CommonBitArray> row(
+ image->GetBlackRow(rowNumber, nullptr, e));
+ if (e != BCExceptionNO) {
+ e = BCExceptionNO;
+ continue;
+ }
+ for (int32_t attempt = 0; attempt < 2; attempt++) {
+ if (attempt == 1) {
+ row->Reverse();
+ }
+ CFX_ByteString result = DecodeRow(rowNumber, row.get(), hints, e);
+ if (e != BCExceptionNO) {
+ e = BCExceptionNO;
+ continue;
+ }
+ return result;
+ }
+ }
+ e = BCExceptionNotFound;
+ return "";
+}
+void CBC_OneDReader::RecordPattern(CBC_CommonBitArray* row,
+ int32_t start,
+ CFX_Int32Array* counters,
+ int32_t& e) {
+ int32_t numCounters = counters->GetSize();
+ for (int32_t i = 0; i < numCounters; i++) {
+ (*counters)[i] = 0;
+ }
+ int32_t end = row->GetSize();
+ if (start >= end) {
+ e = BCExceptionNotFound;
+ return;
+ }
+ FX_BOOL isWhite = !row->Get(start);
+ int32_t counterPosition = 0;
+ int32_t j = start;
+ while (j < end) {
+ FX_BOOL pixel = row->Get(j);
+ if (pixel ^ isWhite) {
+ (*counters)[counterPosition]++;
+ } else {
+ counterPosition++;
+ if (counterPosition == numCounters) {
+ break;
+ } else {
+ (*counters)[counterPosition] = 1;
+ isWhite = !isWhite;
+ }
+ }
+ j++;
+ }
+ if (!(counterPosition == numCounters ||
+ (counterPosition == numCounters - 1 && j == end))) {
+ e = BCExceptionNotFound;
+ return;
+ }
+}
+void CBC_OneDReader::RecordPatternInReverse(CBC_CommonBitArray* row,
+ int32_t start,
+ CFX_Int32Array* counters,
+ int32_t& e) {
+ int32_t numTransitionsLeft = counters->GetSize();
+ FX_BOOL last = row->Get(start);
+ while (start > 0 && numTransitionsLeft >= 0) {
+ if (row->Get(--start) != last) {
+ numTransitionsLeft--;
+ last = !last;
+ }
+ }
+ if (numTransitionsLeft >= 0) {
+ e = BCExceptionNotFound;
+ return;
+ }
+ RecordPattern(row, start + 1, counters, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+}
+int32_t CBC_OneDReader::PatternMatchVariance(CFX_Int32Array* counters,
+ const int32_t* pattern,
+ int32_t maxIndividualVariance) {
+ int32_t numCounters = counters->GetSize();
+ int32_t total = 0;
+ int32_t patternLength = 0;
+ for (int32_t i = 0; i < numCounters; i++) {
+ total += (*counters)[i];
+ patternLength += pattern[i];
+ }
+ if (total < patternLength) {
+#undef max
+ return FXSYS_IntMax;
+ }
+ int32_t unitBarWidth = (total << INTEGER_MATH_SHIFT) / patternLength;
+ maxIndividualVariance =
+ (maxIndividualVariance * unitBarWidth) >> INTEGER_MATH_SHIFT;
+ int32_t totalVariance = 0;
+ for (int32_t x = 0; x < numCounters; x++) {
+ int32_t counter = (*counters)[x] << INTEGER_MATH_SHIFT;
+ int32_t scaledPattern = pattern[x] * unitBarWidth;
+ int32_t variance = counter > scaledPattern ? counter - scaledPattern
+ : scaledPattern - counter;
+ if (variance > maxIndividualVariance) {
+#undef max
+ return FXSYS_IntMax;
+ }
+ totalVariance += variance;
+ }
+ return totalVariance / total;
+}