source: trunk/src/3rdparty/phonon/gstreamer/devicemanager.h

/*  This file is part of the KDE project.

    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

    This library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 2.1 or 3 of the License.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this library.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef Phonon_GSTREAMER_DEVICEMANAGER_H
#define Phonon_GSTREAMER_DEVICEMANAGER_H

#include "common.h"

#include <phonon/audiooutputinterface.h>

#include <QtCore/QObject>
#include <QtCore/QTimer>

#include <gst/gst.h>

QT_BEGIN_NAMESPACE

namespace Phonon {
namespace Gstreamer {
class Backend;
class DeviceManager;
class AbstractRenderer;
class VideoWidget;

class AudioDevice {
public :
    AudioDevice(DeviceManager *s, const QByteArray &deviceId);
    int id;
    QByteArray gstId;
    QByteArray description;
    QString icon;
};

class DeviceManager : public QObject {
    Q_OBJECT
public:
    DeviceManager(Backend *parent);
    virtual ~DeviceManager();
    const QList<AudioDevice> audioOutputDevices() const;
    GstPad *requestPad(int device) const;
    int allocateDeviceId();
    int deviceId(const QByteArray &gstId) const;
    const QByteArray gstId(int id);
    AudioDevice* audioDevice(int id);
    GstElement *createGNOMEAudioSink(Category category);
    GstElement *createAudioSink(Category category = NoCategory);
    AbstractRenderer *createVideoRenderer(VideoWidget *parent);

signals:
    void deviceAdded(int);
    void deviceRemoved(int);

public slots:
    void updateDeviceList();

private:
    bool canOpenDevice(GstElement *element) const;
    Backend *m_backend;
    QList <AudioDevice> m_audioDeviceList;
    int m_audioDeviceCounter;
    QTimer m_devicePollTimer;
    QByteArray m_audioSink;
    QByteArray m_videoSinkWidget;
};
}
} // namespace Phonon::Gstreamer

QT_END_NAMESPACE

#endif // Phonon_GSTREAMER_DEVICEMANAGER_H