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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtPositioning module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QNMESATELLITEINFOSOURCE_P_H
#define QNMESATELLITEINFOSOURCE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qnmeasatelliteinfosource.h"
#include <QtPositioning/qgeosatelliteinfo.h>
#include <QObject>
#include <QQueue>
#include <QPointer>
#include <QMap>
#include <QtCore/qiodevice.h>
#include <QtCore/qtimer.h>
QT_BEGIN_NAMESPACE
#define USE_NMEA_PIMPL 1
struct SatelliteInfo
{
QList<QGeoSatelliteInfo> satellitesInView;
QList<QGeoSatelliteInfo> satellitesInUse;
QList<int> inUseIds; // temp buffer for GSA received before GSV
bool satellitesInUseReceived = false;
bool updatingGSV = false;
bool validInView = false;
bool validInUse = false;
};
struct QNmeaSatelliteInfoUpdate
{
QMap<QGeoSatelliteInfo::SatelliteSystem, SatelliteInfo> m_satellites;
QList<QGeoSatelliteInfo> m_satellitesInViewParsed;
bool m_validInView = false; // global state for all satellite systems
bool m_validInUse = false; // global state for all satellite systems
bool m_fresh = false;
#if USE_NMEA_PIMPL
QByteArray gsa;
QList<QByteArray> gsv;
#endif
QList<QGeoSatelliteInfo> allSatellitesInUse() const;
QList<QGeoSatelliteInfo> allSatellitesInView() const;
void setSatellitesInView(QGeoSatelliteInfo::SatelliteSystem system,
const QList<QGeoSatelliteInfo> &inView);
bool setSatellitesInUse(QGeoSatelliteInfo::SatelliteSystem system, const QList<int> &inUse);
void consume();
bool isFresh() const;
void clear();
bool isValid() const;
bool calculateValidInUse() const;
bool calculateValidInView() const;
};
class QNmeaSatelliteReader;
class QNmeaSatelliteInfoSourcePrivate : public QObject
{
Q_OBJECT
public:
QNmeaSatelliteInfoSourcePrivate(QNmeaSatelliteInfoSource *parent, QNmeaSatelliteInfoSource::UpdateMode updateMode);
~QNmeaSatelliteInfoSourcePrivate();
void startUpdates();
void stopUpdates();
void requestUpdate(int msec);
void notifyNewUpdate();
void processNmeaData(QNmeaSatelliteInfoUpdate &updateInfo);
public slots:
void readyRead();
void emitPendingUpdate();
void sourceDataClosed();
void updateRequestTimeout();
public:
QNmeaSatelliteInfoSource *m_source = nullptr;
QGeoSatelliteInfoSource::Error m_satelliteError = QGeoSatelliteInfoSource::NoError;
QPointer<QIODevice> m_device;
QNmeaSatelliteInfoUpdate m_pendingUpdate;
QNmeaSatelliteInfoUpdate m_lastUpdate;
bool m_invokedStart = false;
bool m_noUpdateLastInterval = false;
bool m_updateTimeoutSent = false;
bool m_connectedReadyRead = false;
QBasicTimer *m_updateTimer = nullptr; // the timer used in startUpdates()
QTimer *m_requestTimer = nullptr; // the timer used in requestUpdate()
QScopedPointer<QNmeaSatelliteReader> m_nmeaReader;
QNmeaSatelliteInfoSource::UpdateMode m_updateMode;
int m_simulationUpdateInterval = 100;
protected:
bool openSourceDevice();
bool initialize();
void prepareSourceDevice();
bool emitUpdated(QNmeaSatelliteInfoUpdate &update, bool fromRequestUpdate);
void timerEvent(QTimerEvent *event) override;
};
class QNmeaSatelliteReader
{
public:
QNmeaSatelliteReader(QNmeaSatelliteInfoSourcePrivate *sourcePrivate);
virtual ~QNmeaSatelliteReader();
virtual void readAvailableData() = 0;
protected:
QNmeaSatelliteInfoSourcePrivate *m_proxy;
};
class QNmeaSatelliteRealTimeReader : public QNmeaSatelliteReader
{
public:
QNmeaSatelliteRealTimeReader(QNmeaSatelliteInfoSourcePrivate *sourcePrivate);
void readAvailableData() override;
};
class QNmeaSatelliteSimulationReader : public QNmeaSatelliteReader
{
public:
QNmeaSatelliteSimulationReader(QNmeaSatelliteInfoSourcePrivate *sourcePrivate);
void readAvailableData() override;
void setUpdateInterval(int msec);
int updateInterval() const;
private:
QScopedPointer<QTimer> m_timer;
int m_updateInterval;
};
QT_END_NAMESPACE
#endif
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