// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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// Original code is licensed as follows:
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/*
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* Copyright 2006 Jeremias Maerki.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "xfa/fxbarcode/datamatrix/BC_DefaultPlacement.h"
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#include "xfa/fxbarcode/datamatrix/BC_Encoder.h"
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CBC_DefaultPlacement::CBC_DefaultPlacement(CFX_WideString codewords,
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int32_t numcols,
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int32_t numrows) {
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m_codewords = codewords;
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m_numcols = numcols;
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m_numrows = numrows;
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m_bits.SetSize(numcols * numrows);
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for (int32_t i = 0; i < numcols * numrows; i++) {
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m_bits[i] = (uint8_t)2;
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}
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}
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CBC_DefaultPlacement::~CBC_DefaultPlacement() {
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m_bits.RemoveAll();
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}
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int32_t CBC_DefaultPlacement::getNumrows() {
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return m_numrows;
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}
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int32_t CBC_DefaultPlacement::getNumcols() {
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return m_numcols;
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}
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CFX_ByteArray& CBC_DefaultPlacement::getBits() {
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return m_bits;
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}
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FX_BOOL CBC_DefaultPlacement::getBit(int32_t col, int32_t row) {
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return m_bits[row * m_numcols + col] == 1;
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}
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void CBC_DefaultPlacement::setBit(int32_t col, int32_t row, FX_BOOL bit) {
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m_bits[row * m_numcols + col] = bit ? (uint8_t)1 : (uint8_t)0;
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}
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FX_BOOL CBC_DefaultPlacement::hasBit(int32_t col, int32_t row) {
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return m_bits[row * m_numcols + col] != 2;
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}
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void CBC_DefaultPlacement::place() {
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int32_t pos = 0;
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int32_t row = 4;
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int32_t col = 0;
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do {
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if ((row == m_numrows) && (col == 0)) {
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corner1(pos++);
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}
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if ((row == m_numrows - 2) && (col == 0) && ((m_numcols % 4) != 0)) {
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corner2(pos++);
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}
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if ((row == m_numrows - 2) && (col == 0) && (m_numcols % 8 == 4)) {
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corner3(pos++);
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}
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if ((row == m_numrows + 4) && (col == 2) && ((m_numcols % 8) == 0)) {
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corner4(pos++);
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}
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do {
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if ((row < m_numrows) && (col >= 0) && !hasBit(col, row)) {
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utah(row, col, pos++);
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}
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row -= 2;
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col += 2;
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} while (row >= 0 && (col < m_numcols));
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row++;
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col += 3;
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do {
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if ((row >= 0) && (col < m_numcols) && !hasBit(col, row)) {
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utah(row, col, pos++);
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}
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row += 2;
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col -= 2;
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} while ((row < m_numrows) && (col >= 0));
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row += 3;
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col++;
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} while ((row < m_numrows) || (col < m_numcols));
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if (!hasBit(m_numcols - 1, m_numrows - 1)) {
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setBit(m_numcols - 1, m_numrows - 1, TRUE);
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setBit(m_numcols - 2, m_numrows - 2, TRUE);
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}
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}
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void CBC_DefaultPlacement::module(int32_t row,
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int32_t col,
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int32_t pos,
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int32_t bit) {
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if (row < 0) {
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row += m_numrows;
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col += 4 - ((m_numrows + 4) % 8);
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}
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if (col < 0) {
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col += m_numcols;
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row += 4 - ((m_numcols + 4) % 8);
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}
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int32_t v = m_codewords.GetAt(pos);
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v &= 1 << (8 - bit);
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setBit(col, row, v != 0);
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}
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void CBC_DefaultPlacement::utah(int32_t row, int32_t col, int32_t pos) {
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module(row - 2, col - 2, pos, 1);
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module(row - 2, col - 1, pos, 2);
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module(row - 1, col - 2, pos, 3);
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module(row - 1, col - 1, pos, 4);
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module(row - 1, col, pos, 5);
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module(row, col - 2, pos, 6);
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module(row, col - 1, pos, 7);
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module(row, col, pos, 8);
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}
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void CBC_DefaultPlacement::corner1(int32_t pos) {
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module(m_numrows - 1, 0, pos, 1);
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module(m_numrows - 1, 1, pos, 2);
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module(m_numrows - 1, 2, pos, 3);
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module(0, m_numcols - 2, pos, 4);
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module(0, m_numcols - 1, pos, 5);
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module(1, m_numcols - 1, pos, 6);
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module(2, m_numcols - 1, pos, 7);
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module(3, m_numcols - 1, pos, 8);
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}
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void CBC_DefaultPlacement::corner2(int32_t pos) {
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module(m_numrows - 3, 0, pos, 1);
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module(m_numrows - 2, 0, pos, 2);
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module(m_numrows - 1, 0, pos, 3);
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module(0, m_numcols - 4, pos, 4);
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module(0, m_numcols - 3, pos, 5);
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module(0, m_numcols - 2, pos, 6);
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module(0, m_numcols - 1, pos, 7);
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module(1, m_numcols - 1, pos, 8);
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}
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void CBC_DefaultPlacement::corner3(int32_t pos) {
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module(m_numrows - 3, 0, pos, 1);
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module(m_numrows - 2, 0, pos, 2);
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module(m_numrows - 1, 0, pos, 3);
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module(0, m_numcols - 2, pos, 4);
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module(0, m_numcols - 1, pos, 5);
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module(1, m_numcols - 1, pos, 6);
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module(2, m_numcols - 1, pos, 7);
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module(3, m_numcols - 1, pos, 8);
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}
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void CBC_DefaultPlacement::corner4(int32_t pos) {
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module(m_numrows - 1, 0, pos, 1);
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module(m_numrows - 1, m_numcols - 1, pos, 2);
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module(0, m_numcols - 3, pos, 3);
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module(0, m_numcols - 2, pos, 4);
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module(0, m_numcols - 1, pos, 5);
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module(1, m_numcols - 3, pos, 6);
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module(1, m_numcols - 2, pos, 7);
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module(1, m_numcols - 1, pos, 8);
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}
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