// 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 2007 ZXing authors
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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 "core/fxcrt/include/fx_memory.h"
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#include "xfa/fxbarcode/qrcode/BC_QRCoderBitVector.h"
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#include "xfa/fxbarcode/utils.h"
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CBC_QRCoderBitVector::CBC_QRCoderBitVector() {
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m_sizeInBits = 0;
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m_size = 32;
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}
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void CBC_QRCoderBitVector::Init() {
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m_array = FX_Alloc(uint8_t, m_size);
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}
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CBC_QRCoderBitVector::~CBC_QRCoderBitVector() {
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FX_Free(m_array);
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}
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void CBC_QRCoderBitVector::Clear() {
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FX_Free(m_array);
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m_sizeInBits = 0;
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m_size = 32;
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m_array = FX_Alloc(uint8_t, m_size);
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}
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int32_t CBC_QRCoderBitVector::At(int32_t index, int32_t& e) {
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if (index < 0 || index >= m_sizeInBits) {
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e = BCExceptionBadIndexException;
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BC_EXCEPTION_CHECK_ReturnValue(e, 0);
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}
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int32_t value = m_array[index >> 3] & 0xff;
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return (value >> (7 - (index & 0x7))) & 1;
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}
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int32_t CBC_QRCoderBitVector::sizeInBytes() {
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return (m_sizeInBits + 7) >> 3;
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}
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int32_t CBC_QRCoderBitVector::Size() {
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return m_sizeInBits;
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}
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void CBC_QRCoderBitVector::AppendBit(int32_t bit, int32_t& e) {
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if (!(bit == 0 || bit == 1)) {
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e = BCExceptionBadValueException;
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BC_EXCEPTION_CHECK_ReturnVoid(e);
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}
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int32_t numBitsInLastByte = m_sizeInBits & 0x7;
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if (numBitsInLastByte == 0) {
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AppendByte(0);
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m_sizeInBits -= 8;
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}
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m_array[m_sizeInBits >> 3] |= (bit << (7 - numBitsInLastByte));
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++m_sizeInBits;
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}
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void CBC_QRCoderBitVector::AppendBits(int32_t value,
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int32_t numBits,
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int32_t& e) {
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if (numBits < 0 || numBits > 32) {
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e = BCExceptionBadNumBitsException;
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BC_EXCEPTION_CHECK_ReturnVoid(e);
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}
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int32_t numBitsLeft = numBits;
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while (numBitsLeft > 0) {
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if ((m_sizeInBits & 0x7) == 0 && numBitsLeft >= 8) {
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int32_t newByte = (value >> (numBitsLeft - 8)) & 0xff;
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AppendByte(newByte);
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numBitsLeft -= 8;
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} else {
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int32_t bit = (value >> (numBitsLeft - 1)) & 1;
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AppendBit(bit, e);
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BC_EXCEPTION_CHECK_ReturnVoid(e);
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--numBitsLeft;
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}
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}
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}
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void CBC_QRCoderBitVector::AppendBitVector(CBC_QRCoderBitVector* bits,
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int32_t& e) {
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int32_t size = bits->Size();
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for (int32_t i = 0; i < size; i++) {
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int32_t num = bits->At(i, e);
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BC_EXCEPTION_CHECK_ReturnVoid(e);
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AppendBit(num, e);
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BC_EXCEPTION_CHECK_ReturnVoid(e)
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}
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}
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void CBC_QRCoderBitVector::XOR(CBC_QRCoderBitVector* other, int32_t& e) {
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if (m_sizeInBits != other->Size()) {
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e = BCExceptioncanNotOperatexorOperator;
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BC_EXCEPTION_CHECK_ReturnVoid(e);
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}
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int32_t sizeInBytes = (m_sizeInBits + 7) >> 3;
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for (int32_t i = 0; i < sizeInBytes; ++i) {
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m_array[i] ^= (other->GetArray())[i];
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}
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}
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uint8_t* CBC_QRCoderBitVector::GetArray() {
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return m_array;
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}
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void CBC_QRCoderBitVector::AppendByte(int32_t value) {
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if ((m_sizeInBits >> 3) == m_size) {
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uint8_t* newArray = FX_Alloc(uint8_t, m_size << 1);
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FXSYS_memcpy(newArray, m_array, m_size);
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FX_Free(m_array);
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m_array = newArray;
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m_size = m_size << 1;
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}
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m_array[m_sizeInBits >> 3] = (uint8_t)value;
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m_sizeInBits += 8;
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}
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