DsoServicePrivate Class Reference

The DsoServicePrivate class provides private implementation for DsoService. More...

Inheritance diagram for DsoServicePrivate:

Collaboration diagram for DsoServicePrivate:

Public Member Functions
	DsoServicePrivate (QLowEnergyController *controller, DsoService *const q)
Public Member Functions inherited from AbstractPokitServicePrivate
	AbstractPokitServicePrivate (const QBluetoothUuid &serviceUuid, QLowEnergyController *controller, AbstractPokitService *const q)
bool	createServiceObject ()
	Creates an internal service object from the internal controller.
QLowEnergyCharacteristic	getCharacteristic (const QBluetoothUuid &uuid) const
	Get uuid characteristic from the underlying service.
bool	readCharacteristic (const QBluetoothUuid &uuid)
	Read the uuid characteristic.
bool	enableCharacteristicNotificatons (const QBluetoothUuid &uuid)
	Enables client (Pokit device) side notification for characteristic uuid.
bool	disableCharacteristicNotificatons (const QBluetoothUuid &uuid)
	Disables client (Pokit device) side notification for characteristic uuid.
Public Member Functions inherited from QObject
virtual const QMetaObject *	metaObject () const const
	QObject (QObject *parent)
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
QString	objectName () const const
void	setObjectName (const QString &name)
bool	isWidgetType () const const
bool	isWindowType () const const
bool	signalsBlocked () const const
bool	blockSignals (bool block)
QThread *	thread () const const
void	moveToThread (QThread *targetThread)
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)
void	killTimer (int id)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
const QObjectList &	children () const const
void	setParent (QObject *parent)
void	installEventFilter (QObject *filterObj)
void	removeEventFilter (QObject *obj)
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectTree ()
void	dumpObjectInfo ()
void	dumpObjectTree () const const
void	dumpObjectInfo () const const
bool	setProperty (const char *name, const QVariant &value)
QVariant	property (const char *name) const const
QList< QByteArray >	dynamicPropertyNames () const const
void	destroyed (QObject *obj)
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
bool	inherits (const char *className) const const
void	deleteLater ()
	Q_DISABLE_COPY (Class)
	Q_DISABLE_MOVE (Class)
	Q_DISABLE_COPY_MOVE (Class)
T	qobject_cast (QObject *object)
T	qobject_cast (const QObject *object)
T	qFindChild (const QObject *obj, const QString &name)
QList< T >	qFindChildren (const QObject *obj, const QString &name)
QList< T >	qFindChildren (const QObject *obj, const QRegExp &regExp)
	Q_CLASSINFO (Name, Value)
	Q_INTERFACES (...)
	Q_PROPERTY (...)
	Q_ENUMS (...)
	Q_FLAGS (...)
	Q_ENUM (...)
	Q_FLAG (...)
	Q_ENUM_NS (...)
	Q_FLAG_NS (...)
	Q_OBJECT Q_OBJECT
	Q_GADGET Q_GADGET
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_SIGNALS Q_SIGNALS
	Q_SIGNAL Q_SIGNAL
	Q_SLOTS Q_SLOTS
	Q_SLOT Q_SLOT
	Q_EMIT Q_EMIT
	Q_INVOKABLE Q_INVOKABLE
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT

Static Public Member Functions
static QByteArray	encodeSettings (const DsoService::Settings &settings)
	Returns settings in the format Pokit devices expect.
static DsoService::Metadata	parseMetadata (const QByteArray &value)
	Parses the Metadata value into a DsoService::Metatdata struct.
static DsoService::Samples	parseSamples (const QByteArray &value)
	Parses the Reading value into a DsoService::Samples vector.
Static Public Member Functions inherited from AbstractPokitServicePrivate
static	Q_LOGGING_CATEGORY (lc, "pokit.ble.service", QtInfoMsg)
	Logging category.
static bool	checkSize (const QString &label, const QByteArray &data, const int minSize, const int maxSize=-1, const bool failOnMax=false)
	Returns false if data is smaller than minSize, otherwise returns failOnMax if data is bigger than maxSize, otherwise returns true.
static QString	toHexString (const QByteArray &data, const int maxSize=20)
	Returns up to maxSize bytes of data as a human readable hexadecimal string.
Static Public Member Functions inherited from QObject
QString	tr (const char *sourceText, const char *disambiguation, int n)
QString	trUtf8 (const char *sourceText, const char *disambiguation, int n)
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
bool	disconnect (const QMetaObject::Connection &connection)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)

Protected Member Functions
void	characteristicRead (const QLowEnergyCharacteristic &characteristic, const QByteArray &value) override
	Implements AbstractPokitServicePrivate::characteristicRead to parse value, then emit a specialised signal, for each supported characteristic.
void	characteristicWritten (const QLowEnergyCharacteristic &characteristic, const QByteArray &newValue) override
	Implements AbstractPokitServicePrivate::characteristicWritten to parse newValue, then emit a specialised signal, for each supported characteristic.
void	characteristicChanged (const QLowEnergyCharacteristic &characteristic, const QByteArray &newValue) override
	Implements AbstractPokitServicePrivate::characteristicChanged to parse newValue, then emit a specialised signal, for each supported characteristic.
Protected Member Functions inherited from QObject
QObject *	sender () const const
int	senderSignalIndex () const const
int	receivers (const char *signal) const const
bool	isSignalConnected (const QMetaMethod &signal) const const
virtual void	timerEvent (QTimerEvent *event)
virtual void	childEvent (QChildEvent *event)
virtual void	customEvent (QEvent *event)
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	disconnectNotify (const QMetaMethod &signal)

Additional Inherited Members
Public Attributes inherited from AbstractPokitServicePrivate
bool	autoDiscover { true }
	Whether autodiscovery is enabled or not.
QLowEnergyController *	controller { nullptr }
	BLE controller to fetch the service from.
std::optional< PokitProduct >	pokitProduct
	The Pokit product controller is connected to.
QLowEnergyService *	service { nullptr }
	BLE service to read/write characteristics.
QBluetoothUuid	serviceUuid
	UUIDs for service.
Public Attributes inherited from QObject
typedef	QObjectList
Protected Slots inherited from AbstractPokitServicePrivate
void	connected ()
	Handles QLowEnergyController::connected events.
void	discoveryFinished ()
	Handles QLowEnergyController::discoveryFinished events.
void	errorOccurred (const QLowEnergyService::ServiceError newError)
	Handles QLowEnergyController::errorOccurred events.
virtual void	serviceDiscovered (const QBluetoothUuid &newService)
	Handles QLowEnergyController::serviceDiscovered events.
void	stateChanged (QLowEnergyService::ServiceState newState)
	Handles QLowEnergyController::stateChanged events.
Protected Attributes inherited from AbstractPokitServicePrivate
AbstractPokitService *	q_ptr
	Internal q-pointer.
Properties inherited from QObject
	objectName

Detailed Description

The DsoServicePrivate class provides private implementation for DsoService.

Definition at line 18 of file dsoservice_p.h.

Constructor & Destructor Documentation

DsoServicePrivate()

DsoServicePrivate::DsoServicePrivate ( QLowEnergyController * controller, DsoService *const q )

explicit

Constructs a new DsoServicePrivate object with public implementation q.

Definition at line 327 of file dsoservice.cpp.

    : AbstractPokitServicePrivate(DsoService::serviceUuid, controller, q)
{
 
}

References AbstractPokitServicePrivate::AbstractPokitServicePrivate(), AbstractPokitServicePrivate::controller, and AbstractPokitServicePrivate::serviceUuid.

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Member Function Documentation

characteristicChanged()

void DsoServicePrivate::characteristicChanged ( const QLowEnergyCharacteristic & characteristic, const QByteArray & newValue )

overrideprotectedvirtual

Implements AbstractPokitServicePrivate::characteristicChanged to parse newValue, then emit a specialised signal, for each supported characteristic.

Reimplemented from AbstractPokitServicePrivate.

Definition at line 465 of file dsoservice.cpp.

{
    AbstractPokitServicePrivate::characteristicChanged(characteristic, newValue);
 
    Q_Q(DsoService);
    if (characteristic.uuid() == DsoService::CharacteristicUuids::settings) {
        qCWarning(lc).noquote() << tr("Settings characteristic is write-only, but somehow updated")
            << serviceUuid << characteristic.name() << characteristic.uuid();
        return;
    }
 
    if (characteristic.uuid() == DsoService::CharacteristicUuids::metadata) {
        Q_EMIT q->metadataRead(parseMetadata(newValue));
        return;
    }
 
    if (characteristic.uuid() == DsoService::CharacteristicUuids::reading) {
        Q_EMIT q->samplesRead(parseSamples(newValue));
        return;
    }
 
    qCWarning(lc).noquote() << tr("Unknown characteristic notified for DSO service")
        << serviceUuid << characteristic.name() << characteristic.uuid();
}

References AbstractPokitServicePrivate::characteristicChanged(), DsoService::CharacteristicUuids::metadata, QLowEnergyCharacteristic::name(), parseMetadata(), parseSamples(), QObject::Q_EMIT(), DsoService::CharacteristicUuids::reading, AbstractPokitServicePrivate::serviceUuid, DsoService::CharacteristicUuids::settings, QObject::tr(), and QLowEnergyCharacteristic::uuid().

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characteristicRead()

void DsoServicePrivate::characteristicRead ( const QLowEnergyCharacteristic & characteristic, const QByteArray & value )

overrideprotectedvirtual

Implements AbstractPokitServicePrivate::characteristicRead to parse value, then emit a specialised signal, for each supported characteristic.

Reimplemented from AbstractPokitServicePrivate.

Definition at line 403 of file dsoservice.cpp.

{
    AbstractPokitServicePrivate::characteristicRead(characteristic, value);
 
    if (characteristic.uuid() == DsoService::CharacteristicUuids::settings) {
        qCWarning(lc).noquote() << tr("Settings characteristic is write-only, but somehow read")
            << serviceUuid << characteristic.name() << characteristic.uuid();
        return;
    }
 
    Q_Q(DsoService);
    if (characteristic.uuid() == DsoService::CharacteristicUuids::metadata) {
        Q_EMIT q->metadataRead(parseMetadata(value));
        return;
    }
 
    if (characteristic.uuid() == DsoService::CharacteristicUuids::reading) {
        qCWarning(lc).noquote() << tr("Reading characteristic is notify-only")
            << serviceUuid << characteristic.name() << characteristic.uuid();
        return;
    }
 
    qCWarning(lc).noquote() << tr("Unknown characteristic read for DSO service")
        << serviceUuid << characteristic.name() << characteristic.uuid();
}

References AbstractPokitServicePrivate::characteristicRead(), DsoService::CharacteristicUuids::metadata, QLowEnergyCharacteristic::name(), parseMetadata(), QObject::Q_EMIT(), DsoService::CharacteristicUuids::reading, AbstractPokitServicePrivate::serviceUuid, DsoService::CharacteristicUuids::settings, QObject::tr(), and QLowEnergyCharacteristic::uuid().

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characteristicWritten()

void DsoServicePrivate::characteristicWritten ( const QLowEnergyCharacteristic & characteristic, const QByteArray & newValue )

overrideprotectedvirtual

Implements AbstractPokitServicePrivate::characteristicWritten to parse newValue, then emit a specialised signal, for each supported characteristic.

Reimplemented from AbstractPokitServicePrivate.

Definition at line 434 of file dsoservice.cpp.

{
    AbstractPokitServicePrivate::characteristicWritten(characteristic, newValue);
 
    Q_Q(DsoService);
    if (characteristic.uuid() == DsoService::CharacteristicUuids::settings) {
        Q_EMIT q->settingsWritten();
        return;
    }
 
    if (characteristic.uuid() == DsoService::CharacteristicUuids::metadata) {
        qCWarning(lc).noquote() << tr("Metadata characteristic is read/notify, but somehow written")
            << serviceUuid << characteristic.name() << characteristic.uuid();
        return;
    }
 
    if (characteristic.uuid() == DsoService::CharacteristicUuids::reading) {
        qCWarning(lc).noquote() << tr("Reading characteristic is notify-only, but somehow written")
            << serviceUuid << characteristic.name() << characteristic.uuid();
        return;
    }
 
    qCWarning(lc).noquote() << tr("Unknown characteristic written for DSO service")
        << serviceUuid << characteristic.name() << characteristic.uuid();
}

References AbstractPokitServicePrivate::characteristicWritten(), DsoService::CharacteristicUuids::metadata, QLowEnergyCharacteristic::name(), QObject::Q_EMIT(), DsoService::CharacteristicUuids::reading, AbstractPokitServicePrivate::serviceUuid, DsoService::CharacteristicUuids::settings, QObject::tr(), and QLowEnergyCharacteristic::uuid().

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encodeSettings()

QByteArray DsoServicePrivate::encodeSettings ( const DsoService::Settings & settings )

static

Returns settings in the format Pokit devices expect.

Definition at line 337 of file dsoservice.cpp.

{
    static_assert(sizeof(settings.command)         == 1, "Expected to be 1 byte.");
    static_assert(sizeof(settings.triggerLevel)    == 4, "Expected to be 2 bytes.");
    static_assert(sizeof(settings.mode)            == 1, "Expected to be 1 byte.");
    static_assert(sizeof(settings.range)           == 1, "Expected to be 1 byte.");
    static_assert(sizeof(settings.samplingWindow)  == 4, "Expected to be 4 bytes.");
    static_assert(sizeof(settings.numberOfSamples) == 2, "Expected to be 2 bytes.");
 
    QByteArray value;
    QDataStream stream(&value, QIODevice::WriteOnly);
    stream.setByteOrder(QDataStream::LittleEndian);
    stream.setFloatingPointPrecision(QDataStream::SinglePrecision); // 32-bit floats, not 64-bit.
    stream << (quint8)settings.command << settings.triggerLevel << (quint8)settings.mode
           << settings.range << settings.samplingWindow << settings.numberOfSamples;
 
    Q_ASSERT(value.size() == 13);
    return value;
}

References DsoService::Settings::command, QDataStream::LittleEndian, DsoService::Settings::mode, DsoService::Settings::numberOfSamples, DsoService::Settings::range, DsoService::Settings::samplingWindow, QDataStream::setByteOrder(), QDataStream::setFloatingPointPrecision(), QDataStream::SinglePrecision, QByteArray::size(), DsoService::Settings::triggerLevel, and QIODevice::WriteOnly.

Referenced by DsoService::setSettings().

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parseMetadata()

DsoService::Metadata DsoServicePrivate::parseMetadata ( const QByteArray & value )

static

Parses the Metadata value into a DsoService::Metatdata struct.

Definition at line 360 of file dsoservice.cpp.

{
    DsoService::Metadata metadata{
        DsoService::DsoStatus::Error, std::numeric_limits<float>::quiet_NaN(),
        DsoService::Mode::Idle, 0, 0, 0, 0
    };
 
    if (!checkSize(u"Metadata"_s, value, 17, 17)) {
        return metadata;
    }
 
    metadata.status          = static_cast<DsoService::DsoStatus>(value.at(0));
    metadata.scale           = qFromLittleEndian<float>(value.mid(1,4).constData());
    metadata.mode            = static_cast<DsoService::Mode>(value.at(5));
    metadata.range           = static_cast<quint8>(value.at(6));
    metadata.samplingWindow  = qFromLittleEndian<quint32>(value.mid(7,4).constData());
    metadata.numberOfSamples = qFromLittleEndian<quint16>(value.mid(11,2).constData());
    metadata.samplingRate    = qFromLittleEndian<quint32>(value.mid(13,4).constData());
    return metadata;
}

References QByteArray::at(), AbstractPokitServicePrivate::checkSize(), QByteArray::constData(), DsoService::Error, DsoService::Idle, QByteArray::mid(), DsoService::Metadata::mode, DsoService::Metadata::numberOfSamples, DsoService::Metadata::range, DsoService::Metadata::samplingRate, DsoService::Metadata::samplingWindow, DsoService::Metadata::scale, and DsoService::Metadata::status.

Referenced by characteristicChanged(), characteristicRead(), and DsoService::metadata().

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parseSamples()

DsoService::Samples DsoServicePrivate::parseSamples ( const QByteArray & value )

static

Parses the Reading value into a DsoService::Samples vector.

Definition at line 384 of file dsoservice.cpp.

{
    DsoService::Samples samples;
    if ((value.size()%2) != 0) {
        qCWarning(lc).noquote() << tr("Samples value has odd size %1 (should be even): %2")
            .arg(value.size()).arg(toHexString(value));
        return samples;
    }
    while ((samples.size()*2) < value.size()) {
        samples.append(qFromLittleEndian<qint16>(value.mid(samples.size()*2,2).constData()));
    }
    qCDebug(lc).noquote() << tr("Read %n sample/s from %1-bytes.", nullptr, samples.size()).arg(value.size());
    return samples;
}

References QVector::append(), QString::arg(), QByteArray::constData(), QByteArray::mid(), QByteArray::size(), QVector::size(), AbstractPokitServicePrivate::toHexString(), and QObject::tr().

Referenced by characteristicChanged().

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The documentation for this class was generated from the following files:

• dsoservice_p.h
• dsoservice.cpp