36 lines
909 B
C
36 lines
909 B
C
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#include<stdio.h>
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#include<alsa/asoundlib.h>
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#define VOL_CH "Master"
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void increaseVolume()
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{
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long vol = 0;
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long min, max;
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snd_mixer_t *handle;
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snd_mixer_selem_id_t *sid;
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snd_mixer_open(&handle, 0);
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snd_mixer_attach(handle, "default");
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snd_mixer_selem_register(handle, NULL, NULL);
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snd_mixer_load(handle);
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snd_mixer_selem_id_alloca(&sid);
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snd_mixer_selem_id_set_index(sid, 0);
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snd_mixer_selem_id_set_name(sid, VOL_CH);
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snd_mixer_elem_t* elem = snd_mixer_find_selem(handle, sid);
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snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
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snd_mixer_selem_get_playback_volume(elem, SND_MIXER_SCHN_MONO, &vol );
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long vol_percent = vol * 100 / ( int )max;
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long vol_new = vol_percent * max / 100;
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printf( "%ld%%", vol_percent );
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printf( "%ld%%", vol_new );
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int volume = vol_percent + 3;
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printf( "%i", volume );
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snd_mixer_selem_set_playback_volume_all(elem, volume * max / 100);
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snd_mixer_close(handle);
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}
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