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spark: add volume control for alsa mixer

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Origin commit data
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Branch: master
Commit: 7cd67c9fad
Author: martii <you@example.com>
Date: 2012-09-05 (Wed, 05 Sep 2012)


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martii
2012-09-05 19:08:45 +02:00
parent b4ac2ad25e
commit e0c90be5e7
5 changed files with 114 additions and 1 deletions
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37
libspark/audio_mixer.h Normal file
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/*
* audio_mixer.h
*
* (C) 2012 martii
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __AUDIO_MIXER_H__
#define __AUDIO_MIXER_H__
#include <alsa/asoundlib.h>
class mixerVolume
{
private:
long min, max;
snd_mixer_t *handle;
snd_mixer_elem_t* elem;
snd_mixer_selem_id_t *sid;
public:
mixerVolume(const char *selem_name, const char *Card, long volume = -1);
~mixerVolume(void);
bool setVolume(long volume);
};
#endif