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#ifndef QGSTREAMERBUSHELPER_P_H
#define QGSTREAMERBUSHELPER_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 <QObject>

#include "qgstreamermessage_p.h"
#include <gst/gst.h>

class QGstreamerSyncMessageFilter {
public:
    //returns true if message was processed and should be dropped, false otherwise
    virtual bool processSyncMessage(const QGstreamerMessage &message) = 0;
};
#define QGstreamerSyncMessageFilter_iid "com.nokia.Qt.QGstreamerSyncMessageFilter/1.0"
Q_DECLARE_INTERFACE(QGstreamerSyncMessageFilter, QGstreamerSyncMessageFilter_iid)


class QGstreamerBusMessageFilter {
public:
    //returns true if message was processed and should be dropped, false otherwise
    virtual bool processBusMessage(const QGstreamerMessage &message) = 0;
};
#define QGstreamerBusMessageFilter_iid "com.nokia.Qt.QGstreamerBusMessageFilter/1.0"
Q_DECLARE_INTERFACE(QGstreamerBusMessageFilter, QGstreamerBusMessageFilter_iid)


class QGstreamerBusHelperPrivate;

class QGstreamerBusHelper : public QObject
{
    Q_OBJECT
    friend class QGstreamerBusHelperPrivate;

public:
    QGstreamerBusHelper(GstBus* bus, QObject* parent = 0);
    ~QGstreamerBusHelper();

    void installMessageFilter(QObject *filter);
    void removeMessageFilter(QObject *filter);

signals:
    void message(QGstreamerMessage const& message);

private:
    QGstreamerBusHelperPrivate*   d;
};

#endif