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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* https://lxqt.org
*
* Copyright: 2012 Razor team
* Authors:
* Johannes Zellner <webmaster@nebulon.de>
*
* This program or 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 of the License, or (at your option) any later version.
*
* 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, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#ifndef ALSAENGINE_H
#define ALSAENGINE_H
#include "audioengine.h"
#include <QObject>
#include <alsa/asoundlib.h>
class AlsaDevice;
class MixerHandler : public QObject
{
Q_OBJECT
public:
MixerHandler(snd_mixer_t * mixer, QObject * parent = nullptr);
MixerHandler(const MixerHandler & ) = delete;
~MixerHandler();
signals:
void handlingError(int err);
private:
snd_mixer_t * m_mixer;
};
class AlsaEngine : public AudioEngine
{
Q_OBJECT
public:
AlsaEngine(QObject *parent = nullptr);
static AlsaEngine *instance();
virtual const QString backendName() const { return QLatin1String("Alsa"); }
int volumeMax(AudioDevice *device) const;
AlsaDevice *getDeviceByAlsaElem(snd_mixer_elem_t *elem) const;
public slots:
void commitDeviceVolume(AudioDevice *device);
void setMute(AudioDevice *device, bool state);
void updateDevice(AlsaDevice *device);
private:
void discoverDevices();
std::list<MixerHandler> m_mixers;
static AlsaEngine *m_instance;
};
#endif // ALSAENGINE_H
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