Vehicle.cc

    link->writeBytesSafe((const char*)buffer, len);
    _messagesSent++;
    emit messagesSentChanged();
}

void Vehicle::_updatePriorityLink(void)
{
    LinkInterface* newPriorityLink = NULL;

#ifndef NO_SERIAL_LINK
    // Note that this routine specificallty does not clear _priorityLink when there are no links remaining.
    // By doing this we hold a reference on the last link as the Vehicle shuts down. Thus preventing shutdown
    // ordering NULL pointer crashes where priorityLink() is still called during shutdown sequence.
    for (int i=0; i<_links.count(); i++) {
        LinkInterface* link = _links[i];
        if (link->isConnected()) {
            SerialLink* pSerialLink = qobject_cast<SerialLink*>(link);
            if (pSerialLink) {
                LinkConfiguration* config = pSerialLink->getLinkConfiguration();
                if (config) {
                    SerialConfiguration* pSerialConfig = qobject_cast<SerialConfiguration*>(config);
                    if (pSerialConfig && pSerialConfig->usbDirect()) {
                        if (_priorityLink.data() != link) {
                            newPriorityLink = link;
                            break;
                        }
                        return;
                    }
                }
            }
        }
    }
#endif

    if (!newPriorityLink && !_priorityLink.data() && _links.count()) {
        newPriorityLink = _links[0];
    }

    if (newPriorityLink) {
        _priorityLink = qgcApp()->toolbox()->linkManager()->sharedLinkInterfacePointerForLink(newPriorityLink);
    }
}

void Vehicle::setLatitude(double latitude)
{
    _coordinate.setLatitude(latitude);
    emit coordinateChanged(_coordinate);
}

void Vehicle::setLongitude(double longitude){
    _coordinate.setLongitude(longitude);
    emit coordinateChanged(_coordinate);
}

void Vehicle::_updateAttitude(UASInterface*, double roll, double pitch, double yaw, quint64)
{
    if (qIsInf(roll)) {
        _rollFact.setRawValue(0);
    } else {
        _rollFact.setRawValue(roll * (180.0 / M_PI));
    }
    if (qIsInf(pitch)) {
        _pitchFact.setRawValue(0);
    } else {
        _pitchFact.setRawValue(pitch * (180.0 / M_PI));
    }
    if (qIsInf(yaw)) {
        _headingFact.setRawValue(0);
    } else {
        yaw = yaw * (180.0 / M_PI);
        if (yaw < 0) yaw += 360;
        _headingFact.setRawValue(yaw);
    }
}

void Vehicle::_updateAttitude(UASInterface* uas, int, double roll, double pitch, double yaw, quint64 timestamp)
{
    _updateAttitude(uas, roll, pitch, yaw, timestamp);
}

int Vehicle::motorCount(void)
{
    switch (_vehicleType) {
    case MAV_TYPE_HELICOPTER:
        return 1;
    case MAV_TYPE_VTOL_DUOROTOR:
        return 2;
    case MAV_TYPE_TRICOPTER:
        return 3;
    case MAV_TYPE_QUADROTOR:
    case MAV_TYPE_VTOL_QUADROTOR:
        return 4;
    case MAV_TYPE_HEXAROTOR:
        return 6;
    case MAV_TYPE_OCTOROTOR:
        return 8;
    default:
        return -1;
    }
}

bool Vehicle::coaxialMotors(void)
{
    return _firmwarePlugin->multiRotorCoaxialMotors(this);
}

bool Vehicle::xConfigMotors(void)
{
    return _firmwarePlugin->multiRotorXConfig(this);
}

/*
 * Internal
 */

QString Vehicle::getMavIconColor()
{
    // TODO: Not using because not only the colors are ghastly, it doesn't respect dark/light palette
    if(_mav)
        return _mav->getColor().name();
    else
        return QString("black");
}

QString Vehicle::formatedMessages()
{
    QString messages;
    foreach(UASMessage* message, qgcApp()->toolbox()->uasMessageHandler()->messages()) {
        messages += message->getFormatedText();
    }
    return messages;
}

void Vehicle::clearMessages()
{
    qgcApp()->toolbox()->uasMessageHandler()->clearMessages();
}

void Vehicle::_handletextMessageReceived(UASMessage* message)
{
    if(message)
    {
        _formatedMessage = message->getFormatedText();
        emit formatedMessageChanged();
    }
}

void Vehicle::_handleTextMessage(int newCount)
{
    // Reset?
    if(!newCount) {
        _currentMessageCount = 0;
        _currentNormalCount  = 0;
        _currentWarningCount = 0;
        _currentErrorCount   = 0;
        _messageCount        = 0;
        _currentMessageType  = MessageNone;
        emit newMessageCountChanged();
        emit messageTypeChanged();
        emit messageCountChanged();
        return;
    }

    UASMessageHandler* pMh = qgcApp()->toolbox()->uasMessageHandler();
    Q_ASSERT(pMh);
    MessageType_t type = newCount ? _currentMessageType : MessageNone;
    int errorCount     = _currentErrorCount;
    int warnCount      = _currentWarningCount;
    int normalCount    = _currentNormalCount;
    //-- Add current message counts
    errorCount  += pMh->getErrorCount();
    warnCount   += pMh->getWarningCount();
    normalCount += pMh->getNormalCount();
    //-- See if we have a higher level
    if(errorCount != _currentErrorCount) {
        _currentErrorCount = errorCount;
        type = MessageError;
    }
    if(warnCount != _currentWarningCount) {
        _currentWarningCount = warnCount;
        if(_currentMessageType != MessageError) {
            type = MessageWarning;
        }
    }
    if(normalCount != _currentNormalCount) {
        _currentNormalCount = normalCount;
        if(_currentMessageType != MessageError && _currentMessageType != MessageWarning) {
            type = MessageNormal;
        }
    }
    int count = _currentErrorCount + _currentWarningCount + _currentNormalCount;
    if(count != _currentMessageCount) {
        _currentMessageCount = count;
        // Display current total new messages count
        emit newMessageCountChanged();
    }
    if(type != _currentMessageType) {
        _currentMessageType = type;
        // Update message level
        emit messageTypeChanged();
    }
    // Update message count (all messages)
    if(newCount != _messageCount) {
        _messageCount = newCount;
        emit messageCountChanged();
    }
    QString errMsg = pMh->getLatestError();
    if(errMsg != _latestError) {
        _latestError = errMsg;
        emit latestErrorChanged();
    }
}

void Vehicle::resetMessages()
{
    // Reset Counts
    int count = _currentMessageCount;
    MessageType_t type = _currentMessageType;
    _currentErrorCount   = 0;
    _currentWarningCount = 0;
    _currentNormalCount  = 0;
    _currentMessageCount = 0;
    _currentMessageType = MessageNone;
    if(count != _currentMessageCount) {
        emit newMessageCountChanged();
    }
    if(type != _currentMessageType) {
        emit messageTypeChanged();
    }
}

int Vehicle::manualControlReservedButtonCount(void)
{
    return _firmwarePlugin->manualControlReservedButtonCount();
}

void Vehicle::_loadSettings(void)
{
    QSettings settings;

    settings.beginGroup(QString(_settingsGroup).arg(_id));

    bool convertOk;

    _joystickMode = (JoystickMode_t)settings.value(_joystickModeSettingsKey, JoystickModeRC).toInt(&convertOk);
    if (!convertOk) {
        _joystickMode = JoystickModeRC;
    }

    // Joystick enabled is a global setting so first make sure there are any joysticks connected
    if (qgcApp()->toolbox()->joystickManager()->joysticks().count()) {
        _joystickEnabled = settings.value(_joystickEnabledSettingsKey, false).toBool();
    }
}

void Vehicle::_saveSettings(void)
{
    QSettings settings;

    settings.beginGroup(QString(_settingsGroup).arg(_id));

    settings.setValue(_joystickModeSettingsKey, _joystickMode);

    // The joystick enabled setting should only be changed if a joystick is present
    // since the checkbox can only be clicked if one is present
    if (qgcApp()->toolbox()->joystickManager()->joysticks().count()) {
        settings.setValue(_joystickEnabledSettingsKey, _joystickEnabled);
    }
}

int Vehicle::joystickMode(void)
{
    return _joystickMode;
}

void Vehicle::setJoystickMode(int mode)
{
    if (mode < 0 || mode >= JoystickModeMax) {
        qCWarning(VehicleLog) << "Invalid joystick mode" << mode;
        return;
    }

    _joystickMode = (JoystickMode_t)mode;
    _saveSettings();
    emit joystickModeChanged(mode);
}

QStringList Vehicle::joystickModes(void)
{
    QStringList list;

    list << "Normal" << "Attitude" << "Position" << "Force" << "Velocity";

    return list;
}

bool Vehicle::joystickEnabled(void)
{
    return _joystickEnabled;
}

void Vehicle::setJoystickEnabled(bool enabled)
{
    _joystickEnabled = enabled;
    _startJoystick(_joystickEnabled);
    _saveSettings();
    emit joystickEnabledChanged(_joystickEnabled);
}

void Vehicle::_startJoystick(bool start)
{
    Joystick* joystick = _joystickManager->activeJoystick();
    if (joystick) {
        if (start) {
            if (_joystickEnabled) {
                joystick->startPolling(this);
            }
        } else {
            joystick->stopPolling();
        }
    }
}

bool Vehicle::active(void)
{
    return _active;
}

void Vehicle::setActive(bool active)
{
    _active = active;

    _startJoystick(_active);
}

bool Vehicle::homePositionAvailable(void)
{
    return _homePositionAvailable;
}

QGeoCoordinate Vehicle::homePosition(void)
{
    return _homePosition;
}

void Vehicle::setArmed(bool armed)
{
    // We specifically use COMMAND_LONG:MAV_CMD_COMPONENT_ARM_DISARM since it is supported by more flight stacks.
    sendMavCommand(defaultComponentId(),
                   MAV_CMD_COMPONENT_ARM_DISARM,
                   true,    // show error if fails
                   armed ? 1.0f : 0.0f);
}

bool Vehicle::flightModeSetAvailable(void)
{
    return _firmwarePlugin->isCapable(this, FirmwarePlugin::SetFlightModeCapability);
}

QStringList Vehicle::flightModes(void)
{
    return _firmwarePlugin->flightModes(this);
}

QString Vehicle::flightMode(void) const
{
    return _firmwarePlugin->flightMode(_base_mode, _custom_mode);
}

void Vehicle::setFlightMode(const QString& flightMode)
{
    uint8_t     base_mode;
    uint32_t    custom_mode;

    qDebug() << flightMode;

    if (_firmwarePlugin->setFlightMode(flightMode, &base_mode, &custom_mode)) {
        // setFlightMode will only set MAV_MODE_FLAG_CUSTOM_MODE_ENABLED in base_mode, we need to move back in the existing
        // states.
        uint8_t newBaseMode = _base_mode & ~MAV_MODE_FLAG_DECODE_POSITION_CUSTOM_MODE;
        newBaseMode |= base_mode;

        mavlink_message_t msg;
        mavlink_msg_set_mode_pack_chan(_mavlink->getSystemId(),
                                       _mavlink->getComponentId(),
                                       priorityLink()->mavlinkChannel(),
                                       &msg,
                                       id(),
                                       newBaseMode,
                                       custom_mode);
        sendMessageOnLink(priorityLink(), msg);
    } else {
        qWarning() << "FirmwarePlugin::setFlightMode failed, flightMode:" << flightMode;
    }
}

bool Vehicle::hilMode(void)
{
    return _base_mode & MAV_MODE_FLAG_HIL_ENABLED;
}

void Vehicle::setHilMode(bool hilMode)
{
    mavlink_message_t msg;

    uint8_t newBaseMode = _base_mode & ~MAV_MODE_FLAG_DECODE_POSITION_HIL;
    if (hilMode) {
        newBaseMode |= MAV_MODE_FLAG_HIL_ENABLED;
    }

    mavlink_msg_set_mode_pack_chan(_mavlink->getSystemId(),
                                   _mavlink->getComponentId(),
                                   priorityLink()->mavlinkChannel(),
                                   &msg,
                                   id(),
                                   newBaseMode,
                                   _custom_mode);
    sendMessageOnLink(priorityLink(), msg);
}

void Vehicle::requestDataStream(MAV_DATA_STREAM stream, uint16_t rate, bool sendMultiple)
{
    mavlink_message_t               msg;
    mavlink_request_data_stream_t   dataStream;

    dataStream.req_stream_id = stream;
    dataStream.req_message_rate = rate;
    dataStream.start_stop = 1;  // start
    dataStream.target_system = id();
    dataStream.target_component = defaultComponentId();

    mavlink_msg_request_data_stream_encode_chan(_mavlink->getSystemId(),
                                                _mavlink->getComponentId(),
                                                priorityLink()->mavlinkChannel(),
                                                &msg,
                                                &dataStream);

    if (sendMultiple) {
        // We use sendMessageMultiple since we really want these to make it to the vehicle
        sendMessageMultiple(msg);
    } else {
        sendMessageOnLink(priorityLink(), msg);
    }
}

void Vehicle::_sendMessageMultipleNext(void)
{
    if (_nextSendMessageMultipleIndex < _sendMessageMultipleList.count()) {
        qCDebug(VehicleLog) << "_sendMessageMultipleNext:" << _sendMessageMultipleList[_nextSendMessageMultipleIndex].message.msgid;

        sendMessageOnLink(priorityLink(), _sendMessageMultipleList[_nextSendMessageMultipleIndex].message);

        if (--_sendMessageMultipleList[_nextSendMessageMultipleIndex].retryCount <= 0) {
            _sendMessageMultipleList.removeAt(_nextSendMessageMultipleIndex);
        } else {
            _nextSendMessageMultipleIndex++;
        }
    }

    if (_nextSendMessageMultipleIndex >= _sendMessageMultipleList.count()) {
        _nextSendMessageMultipleIndex = 0;
    }
}

void Vehicle::sendMessageMultiple(mavlink_message_t message)
{
    SendMessageMultipleInfo_t   info;

    info.message =      message;
    info.retryCount =   _sendMessageMultipleRetries;

    _sendMessageMultipleList.append(info);
}

void Vehicle::_missionManagerError(int errorCode, const QString& errorMsg)
{
    Q_UNUSED(errorCode);
    qgcApp()->showMessage(QString("Error during Mission communication with Vehicle: %1").arg(errorMsg));
}

void Vehicle::_geoFenceManagerError(int errorCode, const QString& errorMsg)
{
    Q_UNUSED(errorCode);
    qgcApp()->showMessage(QString("Error during GeoFence communication with Vehicle: %1").arg(errorMsg));
}

void Vehicle::_rallyPointManagerError(int errorCode, const QString& errorMsg)
{
    Q_UNUSED(errorCode);
    qgcApp()->showMessage(QString("Error during Rally Point communication with Vehicle: %1").arg(errorMsg));
}

void Vehicle::_addNewMapTrajectoryPoint(void)
{
    if (_mapTrajectoryHaveFirstCoordinate) {
        // Keep three minutes of trajectory
        if (_mapTrajectoryList.count() * _mapTrajectoryMsecsBetweenPoints > 3 * 1000 * 60) {
            _mapTrajectoryList.removeAt(0)->deleteLater();
        }
        _mapTrajectoryList.append(new CoordinateVector(_mapTrajectoryLastCoordinate, _coordinate, this));
    }
    _mapTrajectoryHaveFirstCoordinate = true;
    _mapTrajectoryLastCoordinate = _coordinate;
}

void Vehicle::_mapTrajectoryStart(void)
{
    _mapTrajectoryHaveFirstCoordinate = false;
    _mapTrajectoryList.clear();
    _mapTrajectoryTimer.start();
}

void Vehicle::_mapTrajectoryStop()
{
    _mapTrajectoryTimer.stop();
}

void Vehicle::_parametersReady(bool parametersReady)
{
    if (parametersReady && !_missionManagerInitialRequestSent) {
        _missionManagerInitialRequestSent = true;
        QString missionAutoLoadDirPath = QGroundControlQmlGlobal::missionAutoLoadDir();
        if (missionAutoLoadDirPath.isEmpty()) {
            _missionManager->requestMissionItems();
        } else {
            QmlObjectListModel* visualItems = NULL;
            QmlObjectListModel* complexItems = NULL;
            QDir missionAutoLoadDir(missionAutoLoadDirPath);
            QString autoloadFilename = missionAutoLoadDir.absoluteFilePath(tr("AutoLoad%1.mission").arg(_id));
            if (MissionController::loadItemsFromFile(this, autoloadFilename, &visualItems, &complexItems)) {
                MissionController::sendItemsToVehicle(this, visualItems);
            }
        }
    }

    if (parametersReady) {
        setJoystickEnabled(_joystickEnabled);
    }
}

void Vehicle::disconnectInactiveVehicle(void)
{
    // Vehicle is no longer communicating with us, disconnect all links


    LinkManager* linkMgr = qgcApp()->toolbox()->linkManager();
    for (int i=0; i<_links.count(); i++) {
        // FIXME: This linkInUse check is a hack fix for multiple vehicles on the same link.
        // The real fix requires significant restructuring which will come later.
        if (!qgcApp()->toolbox()->multiVehicleManager()->linkInUse(_links[i], this)) {
            linkMgr->disconnectLink(_links[i]);
        }
    }
}

void Vehicle::_imageReady(UASInterface*)
{
    if(_uas)
    {
        QImage img = _uas->getImage();
        qgcApp()->toolbox()->imageProvider()->setImage(&img, _id);
        _flowImageIndex++;
        emit flowImageIndexChanged();
    }
}

void Vehicle::_remoteControlRSSIChanged(uint8_t rssi)
{
    if (_rcRSSIstore < 0 || _rcRSSIstore > 100) {
        _rcRSSIstore = rssi;
    }

    // Low pass to git rid of jitter
    _rcRSSIstore = (_rcRSSIstore * 0.9f) + ((float)rssi * 0.1);
    uint8_t filteredRSSI = (uint8_t)ceil(_rcRSSIstore);
    if(_rcRSSIstore < 0.1) {
        filteredRSSI = 0;
    }
    if(_rcRSSI != filteredRSSI) {
        _rcRSSI = filteredRSSI;
        emit rcRSSIChanged(_rcRSSI);
    }
}

void Vehicle::virtualTabletJoystickValue(double roll, double pitch, double yaw, double thrust)
{
    // The following if statement prevents the virtualTabletJoystick from sending values if the standard joystick is enabled
    if ( !_joystickEnabled ) {
        _uas->setExternalControlSetpoint(roll, pitch, yaw, thrust, 0, JoystickModeRC);
    }
}

void Vehicle::setConnectionLostEnabled(bool connectionLostEnabled)
{
    if (_connectionLostEnabled != connectionLostEnabled) {
        _connectionLostEnabled = connectionLostEnabled;
        emit connectionLostEnabledChanged(_connectionLostEnabled);
    }
}

void Vehicle::_connectionLostTimeout(void)
{
    if (_connectionLostEnabled && !_connectionLost) {
        _connectionLost = true;
        _heardFrom = false;
        emit connectionLostChanged(true);
        _say(QString("%1 communication lost").arg(_vehicleIdSpeech()));
        if (_autoDisconnect) {
            disconnectInactiveVehicle();
        }
    }
}

void Vehicle::_connectionActive(void)
{
    _connectionLostTimer.start();
    if (_connectionLost) {
        _connectionLost = false;
        emit connectionLostChanged(false);
        _say(QString("%1 communication regained").arg(_vehicleIdSpeech()));
    }
}

void Vehicle::_say(const QString& text)
{
    qgcApp()->toolbox()->audioOutput()->say(text.toLower());
}

bool Vehicle::fixedWing(void) const
{
    return QGCMAVLink::isFixedWing(vehicleType());
}

bool Vehicle::rover(void) const
{
    return QGCMAVLink::isRover(vehicleType());
}

bool Vehicle::sub(void) const
{
    return QGCMAVLink::isSub(vehicleType());
}

bool Vehicle::multiRotor(void) const
{
    return QGCMAVLink::isMultiRotor(vehicleType());
}

bool Vehicle::vtol(void) const
{
    switch (vehicleType()) {
    case MAV_TYPE_VTOL_DUOROTOR:
    case MAV_TYPE_VTOL_QUADROTOR:
    case MAV_TYPE_VTOL_TILTROTOR:
    case MAV_TYPE_VTOL_RESERVED2:
    case MAV_TYPE_VTOL_RESERVED3:
    case MAV_TYPE_VTOL_RESERVED4:
    case MAV_TYPE_VTOL_RESERVED5:
        return true;
    default:
        return false;
    }
}

bool Vehicle::supportsManualControl(void) const
{
    return _firmwarePlugin->supportsManualControl();
}

bool Vehicle::supportsThrottleModeCenterZero(void) const
{
    return _firmwarePlugin->supportsThrottleModeCenterZero();
}

bool Vehicle::supportsRadio(void) const
{
    return _firmwarePlugin->supportsRadio();
}

bool Vehicle::supportsJSButton(void) const
{
    return _firmwarePlugin->supportsJSButton();
}

void Vehicle::_setCoordinateValid(bool coordinateValid)
{
    if (coordinateValid != _coordinateValid) {
        _coordinateValid = coordinateValid;
        emit coordinateValidChanged(_coordinateValid);
    }
}

QString Vehicle::vehicleTypeName() const {
    static QMap<int, QString> typeNames = {
        { MAV_TYPE_GENERIC,         tr("Generic micro air vehicle" )},
        { MAV_TYPE_FIXED_WING,      tr("Fixed wing aircraft")},
        { MAV_TYPE_QUADROTOR,       tr("Quadrotor")},
        { MAV_TYPE_COAXIAL,         tr("Coaxial helicopter")},
        { MAV_TYPE_HELICOPTER,      tr("Normal helicopter with tail rotor.")},
        { MAV_TYPE_ANTENNA_TRACKER, tr("Ground installation")},
        { MAV_TYPE_GCS,             tr("Operator control unit / ground control station")},
        { MAV_TYPE_AIRSHIP,         tr("Airship, controlled")},
        { MAV_TYPE_FREE_BALLOON,    tr("Free balloon, uncontrolled")},
        { MAV_TYPE_ROCKET,          tr("Rocket")},
        { MAV_TYPE_GROUND_ROVER,    tr("Ground rover")},
        { MAV_TYPE_SURFACE_BOAT,    tr("Surface vessel, boat, ship")},
        { MAV_TYPE_SUBMARINE,       tr("Submarine")},
        { MAV_TYPE_HEXAROTOR,       tr("Hexarotor")},
        { MAV_TYPE_OCTOROTOR,       tr("Octorotor")},
        { MAV_TYPE_TRICOPTER,       tr("Octorotor")},
        { MAV_TYPE_FLAPPING_WING,   tr("Flapping wing")},
        { MAV_TYPE_KITE,            tr("Flapping wing")},
        { MAV_TYPE_ONBOARD_CONTROLLER, tr("Onboard companion controller")},
        { MAV_TYPE_VTOL_DUOROTOR,   tr("Two-rotor VTOL using control surfaces in vertical operation in addition. Tailsitter")},
        { MAV_TYPE_VTOL_QUADROTOR,  tr("Quad-rotor VTOL using a V-shaped quad config in vertical operation. Tailsitter")},
        { MAV_TYPE_VTOL_TILTROTOR,  tr("Tiltrotor VTOL")},
        { MAV_TYPE_VTOL_RESERVED2,  tr("VTOL reserved 2")},
        { MAV_TYPE_VTOL_RESERVED3,  tr("VTOL reserved 3")},
        { MAV_TYPE_VTOL_RESERVED4,  tr("VTOL reserved 4")},
        { MAV_TYPE_VTOL_RESERVED5,  tr("VTOL reserved 5")},
        { MAV_TYPE_GIMBAL,          tr("Onboard gimbal")},
        { MAV_TYPE_ADSB,            tr("Onboard ADSB peripheral")},
    };
    return typeNames[_vehicleType];
}

/// Returns the string to speak to identify the vehicle
QString Vehicle::_vehicleIdSpeech(void)
{
    if (qgcApp()->toolbox()->multiVehicleManager()->vehicles()->count() > 1) {
        return QString("vehicle %1").arg(id());
    } else {
        return QString();
    }
}

void Vehicle::_handleFlightModeChanged(const QString& flightMode)
{
    _say(QString("%1 %2 flight mode").arg(_vehicleIdSpeech()).arg(flightMode));
    emit guidedModeChanged(_firmwarePlugin->isGuidedMode(this));
}

void Vehicle::_announceArmedChanged(bool armed)
{
    _say(QString("%1 %2").arg(_vehicleIdSpeech()).arg(armed ? QStringLiteral("armed") : QStringLiteral("disarmed")));
}

void Vehicle::clearTrajectoryPoints(void)
{
    _mapTrajectoryList.clearAndDeleteContents();
}

void Vehicle::setFlying(bool flying)
{
    if (armed() && _flying != flying) {
        _flying = flying;
        emit flyingChanged(flying);
    }
}

bool Vehicle::guidedModeSupported(void) const
{
    return _firmwarePlugin->isCapable(this, FirmwarePlugin::GuidedModeCapability);
}

bool Vehicle::pauseVehicleSupported(void) const
{
    return _firmwarePlugin->isCapable(this, FirmwarePlugin::PauseVehicleCapability);
}

bool Vehicle::orbitModeSupported() const
{
    return _firmwarePlugin->isCapable(this, FirmwarePlugin::OrbitModeCapability);
}

void Vehicle::guidedModeRTL(void)
{
    if (!guidedModeSupported()) {
        qgcApp()->showMessage(guided_mode_not_supported_by_vehicle);
        return;
    }
    _firmwarePlugin->guidedModeRTL(this);
}

void Vehicle::guidedModeLand(void)
{
    if (!guidedModeSupported()) {
        qgcApp()->showMessage(guided_mode_not_supported_by_vehicle);
        return;
    }
    _firmwarePlugin->guidedModeLand(this);
}

void Vehicle::guidedModeTakeoff(double altitudeRel)
{
    if (!guidedModeSupported()) {
        qgcApp()->showMessage(guided_mode_not_supported_by_vehicle);
        return;
    }
    setGuidedMode(true);
    _firmwarePlugin->guidedModeTakeoff(this, altitudeRel);
}

void Vehicle::guidedModeGotoLocation(const QGeoCoordinate& gotoCoord)
{
    if (!guidedModeSupported()) {
        qgcApp()->showMessage(guided_mode_not_supported_by_vehicle);
        return;
    }
    _firmwarePlugin->guidedModeGotoLocation(this, gotoCoord);
}

void Vehicle::guidedModeChangeAltitude(double altitudeRel)
{
    if (!guidedModeSupported()) {
        qgcApp()->showMessage(guided_mode_not_supported_by_vehicle);
        return;
    }
    _firmwarePlugin->guidedModeChangeAltitude(this, altitudeRel);
}

void Vehicle::guidedModeOrbit(const QGeoCoordinate& centerCoord, double radius, double velocity, double altitude)
{
    if (!orbitModeSupported()) {
        qgcApp()->showMessage(QStringLiteral("Orbit mode not supported by Vehicle."));
        return;
    }
    _firmwarePlugin->guidedModeOrbit(this, centerCoord, radius, velocity, altitude);
}

void Vehicle::pauseVehicle(void)
{
    if (!pauseVehicleSupported()) {
        qgcApp()->showMessage(QStringLiteral("Pause not supported by vehicle."));
        return;
    }
    _firmwarePlugin->pauseVehicle(this);
}

bool Vehicle::guidedMode(void) const
{
    return _firmwarePlugin->isGuidedMode(this);
}

void Vehicle::setGuidedMode(bool guidedMode)
{
    return _firmwarePlugin->setGuidedMode(this, guidedMode);
}

void Vehicle::emergencyStop(void)
{
    sendMavCommand(defaultComponentId(),
                   MAV_CMD_COMPONENT_ARM_DISARM,
                   true,        // show error if fails
                   0.0f,
                   21196.0f);  // Magic number for emergency stop
}

void Vehicle::setCurrentMissionSequence(int seq)
{
    if (!_firmwarePlugin->sendHomePositionToVehicle()) {
        seq--;
    }
    mavlink_message_t msg;
    mavlink_msg_mission_set_current_pack_chan(_mavlink->getSystemId(),
                                              _mavlink->getComponentId(),
                                              priorityLink()->mavlinkChannel(),
                                              &msg,
                                              id(),
                                              _compID,
                                              seq);
    sendMessageOnLink(priorityLink(), msg);
}

void Vehicle::sendMavCommand(int component, MAV_CMD command, bool showError, float param1, float param2, float param3, float param4, float param5, float param6, float param7)
{
    MavCommandQueueEntry_t entry;

    entry.component = component;
    entry.command = command;
    entry.showError = showError;
    entry.rgParam[0] = param1;
    entry.rgParam[1] = param2;
    entry.rgParam[2] = param3;
    entry.rgParam[3] = param4;
    entry.rgParam[4] = param5;
    entry.rgParam[5] = param6;
    entry.rgParam[6] = param7;

    _mavCommandQueue.append(entry);

    if (_mavCommandQueue.count() == 1) {
        _mavCommandRetryCount = 0;
        _sendMavCommandAgain();
    }
}

void Vehicle::_sendMavCommandAgain(void)
{
    if(!_mavCommandQueue.size()) {
        qWarning() << "Command resend with no commands in queue";
        _mavCommandAckTimer.stop();
        return;
    }

    MavCommandQueueEntry_t& queuedCommand = _mavCommandQueue[0];

    if (_mavCommandRetryCount++ > _mavCommandMaxRetryCount) {
        emit mavCommandResult(_id, queuedCommand.component, queuedCommand.command, MAV_RESULT_FAILED, true /* noResponsefromVehicle */);
        if (queuedCommand.showError) {
            qgcApp()->showMessage(tr("Vehicle did not respond to command: %1").arg(qgcApp()->toolbox()->missionCommandTree()->friendlyName(queuedCommand.command)));
        }
        _mavCommandQueue.removeFirst();
        _sendNextQueuedMavCommand();
        return;
    }

    if (_mavCommandRetryCount > 1) {
        // We always let AUTOPILOT_CAPABILITIES go through multiple times even if we don't get acks. This is because
        // we really need to get capabilities and version info back over a lossy link.
        if (queuedCommand.command != MAV_CMD_REQUEST_AUTOPILOT_CAPABILITIES) {
            if (px4Firmware()) {
                // Older PX4 firmwares are inconsistent with repect to sending back an Ack from a COMMAND_LONG, hence we can't support retry logic for it.
                if (_firmwareMajorVersion != versionNotSetValue) {
                    // If no version set assume lastest master dev build, so acks are suppored
                    if (_firmwareMajorVersion <= 1 && _firmwareMinorVersion <= 5 && _firmwarePatchVersion <= 3) {
                        // Acks not supported in this version
                        return;
                    }
                }
            } else {
                if (queuedCommand.command == MAV_CMD_START_RX_PAIR) {
                    // The implementation of this command comes from the IO layer and is shared across stacks. So for other firmwares
                    // we aren't really sure whether they are correct or not.
                    return;
                }
            }
        }
        qDebug() << "Vehicle::_sendMavCommandAgain retrying command:_mavCommandRetryCount" << queuedCommand.command << _mavCommandRetryCount;
    }

    _mavCommandAckTimer.start();

    mavlink_message_t       msg;
    mavlink_command_long_t  cmd;

    cmd.command = queuedCommand.command;
    cmd.confirmation = 0;
    cmd.param1 = queuedCommand.rgParam[0];
    cmd.param2 = queuedCommand.rgParam[1];
    cmd.param3 = queuedCommand.rgParam[2];
    cmd.param4 = queuedCommand.rgParam[3];
    cmd.param5 = queuedCommand.rgParam[4];
    cmd.param6 = queuedCommand.rgParam[5];
    cmd.param7 = queuedCommand.rgParam[6];
    cmd.target_system = _id;
    cmd.target_component = queuedCommand.component;
    mavlink_msg_command_long_encode_chan(_mavlink->getSystemId(),
                                         _mavlink->getComponentId(),
                                         priorityLink()->mavlinkChannel(),
                                         &msg,
                                         &cmd);

    sendMessageOnLink(priorityLink(), msg);
}

void Vehicle::_sendNextQueuedMavCommand(void)
{
    if (_mavCommandQueue.count()) {
        _mavCommandRetryCount = 0;
        _sendMavCommandAgain();
    }
}


void Vehicle::setPrearmError(const QString& prearmError)
{
    _prearmError = prearmError;
    emit prearmErrorChanged(_prearmError);
    if (!_prearmError.isEmpty()) {
        _prearmErrorTimer.start();
    }
}

void Vehicle::_prearmErrorTimeout(void)
{
    setPrearmError(QString());
}

void Vehicle::setFirmwareVersion(int majorVersion, int minorVersion, int patchVersion, FIRMWARE_VERSION_TYPE versionType)
{
    _firmwareMajorVersion = majorVersion;
    _firmwareMinorVersion = minorVersion;
    _firmwarePatchVersion = patchVersion;
    _firmwareVersionType = versionType;
    emit firmwareMajorVersionChanged(_firmwareMajorVersion);
    emit firmwareMinorVersionChanged(_firmwareMinorVersion);
    emit firmwarePatchVersionChanged(_firmwarePatchVersion);
    emit firmwareVersionTypeChanged(_firmwareVersionType);