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authordsinclair <dsinclair@chromium.org>2016-06-16 12:29:07 -0700
committerCommit bot <commit-bot@chromium.org>2016-06-16 12:29:07 -0700
commita26153440b46b3b37b7e81435debb296f22769f4 (patch)
tree37b3073d15af7ae2850b5a02be87123feb54a054 /xfa/fxbarcode/oned/BC_OneDReader.cpp
parent8320ee28f24615d1d619a5db1b7c235ea6f91dde (diff)
downloadpdfium-a26153440b46b3b37b7e81435debb296f22769f4.tar.xz
Remove barcode reading code.
We never read barcodes, we only write them. Remove code related to barcode reading. Review-Url: https://codereview.chromium.org/2071633002
Diffstat (limited to 'xfa/fxbarcode/oned/BC_OneDReader.cpp')
-rw-r--r--xfa/fxbarcode/oned/BC_OneDReader.cpp181
1 files changed, 0 insertions, 181 deletions
diff --git a/xfa/fxbarcode/oned/BC_OneDReader.cpp b/xfa/fxbarcode/oned/BC_OneDReader.cpp
deleted file mode 100644
index 53ff9a480c..0000000000
--- a/xfa/fxbarcode/oned/BC_OneDReader.cpp
+++ /dev/null
@@ -1,181 +0,0 @@
-// 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::DecodeRow(int32_t rowNumber,
- CBC_CommonBitArray* row,
- int32_t hints,
- int32_t& e) {
- return "";
-}
-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;
-}