8675cef6c5
A document is first loaded as a generic PageBase before being converted to
level one pages afterwards.
This is preparation for loading pages of other types such as DRCS and Public
Object Pages. The latter will need further work as the non-TTI file loaders
blindly assume X/1 to X/25 are 7-bit odd parity coded.
This also reverts 0a1c018 putting back the copy constructor that allows
a PageBase to be converted to a LevelOnePage.
127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
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* Copyright (C) 2020-2025 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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#ifndef LOADFORMATS_H
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#define LOADFORMATS_H
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#include <QByteArray>
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#include <QDataStream>
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#include <QFile>
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#include <QList>
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#include <QString>
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#include <QStringList>
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#include <QVariant>
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#include "pagebase.h"
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class LoadFormat
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{
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public:
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virtual ~LoadFormat() {};
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virtual bool load(QFile *inFile, QList<PageBase> &subPages, QVariantHash *metadata = nullptr) =0;
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virtual QString description() const =0;
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virtual QStringList extensions() const =0;
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QString fileDialogFilter() const { return QString(description() + " (*." + extensions().join(" *.") + ')'); };
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QStringList warningStrings() const { return m_warnings; };
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QString errorString() const { return m_error; };
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bool reExportWarning() const { return m_reExportWarning; };
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protected:
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QStringList m_warnings;
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QString m_error;
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bool m_reExportWarning = false;
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};
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class LoadTTIFormat : public LoadFormat
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{
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public:
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bool load(QFile *inFile, QList<PageBase> &subPages, QVariantHash *metadata = nullptr) override;
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QString description() const override { return QString("MRG Systems TTI"); };
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QStringList extensions() const override { return QStringList { "tti", "ttix" }; };
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};
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class LoadT42Format : public LoadFormat
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{
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public:
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bool load(QFile *inFile, QList<PageBase> &subPages, QVariantHash *metadata = nullptr) override;
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QString description() const override { return QString("t42 packet stream"); };
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QStringList extensions() const override { return QStringList { "t42" }; };
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protected:
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virtual bool readPacket();
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QFile *m_inFile;
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unsigned char m_inLine[42];
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};
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class LoadHTTFormat : public LoadT42Format
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{
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public:
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QString description() const override { return QString("HMS SD-Teletext HTT"); };
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QStringList extensions() const override { return QStringList { "htt" }; };
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protected:
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bool readPacket() override;
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};
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class LoadEP1Format : public LoadFormat
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{
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public:
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bool load(QFile *inFile, QList<PageBase> &subPages, QVariantHash *metadata = nullptr) override;
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QString description() const override { return QString("Softel EP1"); };
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QStringList extensions() const override { return QStringList { "ep1", "epx" }; };
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protected:
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// Language codes unique to EP1
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// FIXME duplicated in saveformats.h
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const QMap<int, int> m_languageCode {
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{ 0x00, 0x09 }, { 0x01, 0x0d }, { 0x02, 0x18 }, { 0x03, 0x11 }, { 0x04, 0x0b }, { 0x05, 0x17 }, { 0x06, 0x07 },
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{ 0x08, 0x14 }, { 0x09, 0x0d }, { 0x0a, 0x18 }, { 0x0b, 0x11 }, { 0x0c, 0x0b }, { 0x0e, 0x07 },
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{ 0x10, 0x09 }, { 0x11, 0x0d }, { 0x12, 0x18 }, { 0x13, 0x11 }, { 0x14, 0x0b }, { 0x15, 0x17 }, { 0x16, 0x1c },
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{ 0x1d, 0x1e }, { 0x1f, 0x16 },
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{ 0x21, 0x0d }, { 0x22, 0xff }, { 0x23, 0xff }, { 0x26, 0x07 },
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{ 0x36, 0x1c }, { 0x37, 0x0e },
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{ 0x40, 0x09 }, { 0x44, 0x0b }
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};
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};
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class LoadFormats
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{
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public:
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LoadFormats();
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~LoadFormats();
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LoadFormat *findFormat(const QString &suffix) const;
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QString filters() const { return s_filters; };
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private:
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static const inline int s_size = 4;
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static int s_instances;
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inline static LoadFormat *s_fileFormat[s_size];
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inline static QString s_filters;
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};
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#endif
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