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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/qrcode/BC_QRAlignmentPatternFinder.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/qrcode/BC_QRAlignmentPatternFinder.cpp')
-rw-r--r--xfa/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp199
1 files changed, 0 insertions, 199 deletions
diff --git a/xfa/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp b/xfa/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp
deleted file mode 100644
index efc1014188..0000000000
--- a/xfa/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp
+++ /dev/null
@@ -1,199 +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 2007 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/BC_ResultPoint.h"
-#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
-#include "xfa/fxbarcode/qrcode/BC_QRAlignmentPattern.h"
-#include "xfa/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.h"
-
-CBC_QRAlignmentPatternFinder::CBC_QRAlignmentPatternFinder(
- CBC_CommonBitMatrix* image,
- int32_t startX,
- int32_t startY,
- int32_t width,
- int32_t height,
- FX_FLOAT moduleSize)
- : m_image(image),
- m_startX(startX),
- m_startY(startY),
- m_width(width),
- m_height(height),
- m_moduleSize(moduleSize) {
- m_crossCheckStateCount.SetSize(3);
-}
-
-CBC_QRAlignmentPatternFinder::~CBC_QRAlignmentPatternFinder() {
- for (int32_t i = 0; i < m_possibleCenters.GetSize(); i++)
- delete m_possibleCenters[i];
-}
-
-CBC_QRAlignmentPattern* CBC_QRAlignmentPatternFinder::Find(int32_t& e) {
- int32_t startX = m_startX;
- int32_t height = m_height;
- int32_t maxJ = startX + m_width;
- int32_t middleI = m_startY + (height >> 1);
- CFX_Int32Array stateCount;
- stateCount.SetSize(3);
- for (int32_t iGen = 0; iGen < height; iGen++) {
- int32_t i =
- middleI + ((iGen & 0x01) == 0 ? ((iGen + 1) >> 1) : -((iGen + 1) >> 1));
- stateCount[0] = 0;
- stateCount[1] = 0;
- stateCount[2] = 0;
- int32_t j = startX;
- while (j < maxJ && !m_image->Get(j, i)) {
- j++;
- }
- int32_t currentState = 0;
- while (j < maxJ) {
- if (m_image->Get(j, i)) {
- if (currentState == 1) {
- stateCount[currentState]++;
- } else {
- if (currentState == 2) {
- if (FoundPatternCross(stateCount)) {
- CBC_QRAlignmentPattern* confirmed =
- HandlePossibleCenter(stateCount, i, j);
- if (confirmed) {
- return confirmed;
- }
- }
- stateCount[0] = stateCount[2];
- stateCount[1] = 1;
- stateCount[2] = 0;
- currentState = 1;
- } else {
- stateCount[++currentState]++;
- }
- }
- } else {
- if (currentState == 1) {
- currentState++;
- }
- stateCount[currentState]++;
- }
- j++;
- }
- if (FoundPatternCross(stateCount)) {
- CBC_QRAlignmentPattern* confirmed =
- HandlePossibleCenter(stateCount, i, maxJ);
- if (confirmed) {
- return confirmed;
- }
- }
- }
- if (m_possibleCenters.GetSize() != 0) {
- return m_possibleCenters[0]->Clone();
- }
- e = BCExceptionRead;
- BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
- return nullptr;
-}
-FX_FLOAT CBC_QRAlignmentPatternFinder::CenterFromEnd(
- const CFX_Int32Array& stateCount,
- int32_t end) {
- return (FX_FLOAT)(end - stateCount[2]) - stateCount[1] / 2.0f;
-}
-FX_BOOL CBC_QRAlignmentPatternFinder::FoundPatternCross(
- const CFX_Int32Array& stateCount) {
- FX_FLOAT moduleSize = m_moduleSize;
- FX_FLOAT maxVariance = moduleSize / 2.0f;
- for (int32_t i = 0; i < 3; i++) {
- if (fabs(moduleSize - stateCount[i]) >= maxVariance) {
- return false;
- }
- }
- return TRUE;
-}
-FX_FLOAT CBC_QRAlignmentPatternFinder::CrossCheckVertical(
- int32_t startI,
- int32_t centerJ,
- int32_t maxCount,
- int32_t originalStateCountTotal) {
- int32_t maxI = m_image->GetHeight();
- CFX_Int32Array stateCount;
- stateCount.Copy(m_crossCheckStateCount);
- stateCount[0] = 0;
- stateCount[1] = 0;
- stateCount[2] = 0;
- int32_t i = startI;
- while (i >= 0 && m_image->Get(centerJ, i) && stateCount[1] <= maxCount) {
- stateCount[1]++;
- i--;
- }
- if (i < 0 || stateCount[1] > maxCount) {
- return FXSYS_nan();
- }
- while (i >= 0 && !m_image->Get(centerJ, i) && stateCount[0] <= maxCount) {
- stateCount[0]++;
- i--;
- }
- if (stateCount[0] > maxCount) {
- return FXSYS_nan();
- }
- i = startI + 1;
- while (i < maxI && m_image->Get(centerJ, i) && stateCount[1] <= maxCount) {
- stateCount[1]++;
- i++;
- }
- if (i == maxI || stateCount[1] > maxCount) {
- return FXSYS_nan();
- }
- while (i < maxI && !m_image->Get(centerJ, i) && stateCount[2] <= maxCount) {
- stateCount[2]++;
- i++;
- }
- if (stateCount[2] > maxCount) {
- return FXSYS_nan();
- }
- int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2];
- if (5 * abs(stateCountTotal - originalStateCountTotal) >=
- originalStateCountTotal) {
- return FXSYS_nan();
- }
- return FoundPatternCross(stateCount) ? CenterFromEnd(stateCount, i)
- : FXSYS_nan();
-}
-CBC_QRAlignmentPattern* CBC_QRAlignmentPatternFinder::HandlePossibleCenter(
- const CFX_Int32Array& stateCount,
- int32_t i,
- int32_t j) {
- int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2];
- FX_FLOAT centerJ = CenterFromEnd(stateCount, j);
- FX_FLOAT centerI = CrossCheckVertical(i, (int32_t)centerJ, 2 * stateCount[1],
- stateCountTotal);
- if (!FXSYS_isnan(centerI)) {
- FX_FLOAT estimatedModuleSize =
- (FX_FLOAT)(stateCount[0] + stateCount[1] + stateCount[2]) / 3.0f;
- int32_t max = m_possibleCenters.GetSize();
- for (int32_t index = 0; index < max; index++) {
- CBC_QRAlignmentPattern* center = m_possibleCenters[index];
- if (center->AboutEquals(estimatedModuleSize, centerI, centerJ)) {
- return new CBC_QRAlignmentPattern(centerJ, centerI,
- estimatedModuleSize);
- }
- }
- m_possibleCenters.Add(
- new CBC_QRAlignmentPattern(centerJ, centerI, estimatedModuleSize));
- }
- return nullptr;
-}