a1e0986e5c
Any unhandled packets within pages are now loaded and saved intact albeit with no way to edit them. File handling is now two separate processes: parsing TTI files into packets, and then interpreting the packets into how pages are displayed. This will allow us to import other file formats, and to deal with page functions other than Level 1 Teletext pages.
116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
/*
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* Copyright (C) 2020 Gavin MacGregor
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*
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* This file is part of QTeletextMaker.
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*
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* QTeletextMaker is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* QTeletextMaker is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with QTeletextMaker. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <QByteArray>
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#include "pagebase.h"
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PageBase::PageBase()
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{
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m_pageFunction = PFLOP;
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m_packetCoding = PC7bit;
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// We use nullptrs to keep track of allocated packets, so initialise them this way
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for (int i=0; i<90; i++)
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m_packets[i] = nullptr;
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}
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PageBase::~PageBase()
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{
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for (int i=0; i<90; i++)
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if (m_packets[i] != nullptr)
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delete m_packets[i];
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}
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QByteArray PageBase::packet(int packetNumber, int designationCode) const
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{
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int packetArrayIndex = packetNumber;
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if (packetNumber >= 26)
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packetArrayIndex += (packetNumber - 26) * 16 + designationCode;
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if (m_packets[packetArrayIndex] == nullptr)
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return QByteArray(); // Blank result
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return *m_packets[packetArrayIndex];
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}
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bool PageBase::packetNeeded(int packetNumber, int designationCode) const
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{
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int packetArrayIndex = packetNumber;
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if (packetNumber >= 26)
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packetArrayIndex += (packetNumber - 26) * 16 + designationCode;
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return m_packets[packetArrayIndex] != nullptr;
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}
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bool PageBase::setPacket(int packetNumber, QByteArray packetContents)
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{
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return setPacket(packetNumber, 0, packetContents);
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}
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bool PageBase::setPacket(int packetNumber, int designationCode, QByteArray packetContents)
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{
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int packetArrayIndex = packetNumber;
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if (packetNumber >= 26)
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packetArrayIndex += (packetNumber - 26) * 16 + designationCode;
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if (m_packets[packetArrayIndex] == nullptr)
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m_packets[packetArrayIndex] = new QByteArray(40, 0x00);
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*m_packets[packetArrayIndex] = packetContents;
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return true;
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}
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bool PageBase::deletePacket(int packetNumber, int designationCode)
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{
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int packetArrayIndex = packetNumber;
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if (packetNumber >= 26)
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packetArrayIndex += (packetNumber - 26) * 16 + designationCode;
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if (m_packets[packetArrayIndex] != nullptr) {
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delete m_packets[packetArrayIndex];
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m_packets[packetArrayIndex] = nullptr;
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}
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return true;
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}
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PageBase::PacketCodingEnum PageBase::packetCoding(int packetNumber, int designationCode) const
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{
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switch (packetNumber) {
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case 26:
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case 28:
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return PC18bit;
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case 27:
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return PC4bit;
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default:
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return m_packetCoding;
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}
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}
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bool PageBase::setPageFunction(PageBase::PageFunctionEnum newPageFunction)
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{
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m_pageFunction = newPageFunction;
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return true;
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}
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bool PageBase::setPacketCoding(PageBase::PacketCodingEnum newPacketEncoding)
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{
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m_packetCoding = newPacketEncoding;
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return true;
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}
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