virtual ~VariantDataStream()

virtual QString dataTypeName() const =0

virtual int dataTypeId() const =0

virtual std::shared_ptr< VariantStreamSubscription > subscribeVar() =0

virtual void start() =0

virtual void stop() =0

virtual bool active() const =0

virtual bool hasSubscribers() const =0

virtual void pushRawData(
    int typeId,
    const void * data,
    size_t size
) =0

virtual QHash< QString, QVariant > metadata() =0

virtual void setMetadata(
    const QHash< QString, QVariant > & metadata
) =0

virtual void setMetadataValue(
    const QString & key,
    const QVariant & value
) =0

virtual void setCommonMetadata(
    const QString & srcModType,
    const QString & srcModName,
    const QString & portTitle
) =0