archive release

sound.c

@@ -0,0 +1,35 @@
+#include<stdio.h>
+#include<alsa/asoundlib.h>
+
+#define VOL_CH  "Master"
+
+void increaseVolume()
+{
+long vol = 0;
+long min, max;
+snd_mixer_t *handle;
+snd_mixer_selem_id_t *sid;
+
+snd_mixer_open(&handle, 0);
+snd_mixer_attach(handle, "default");
+snd_mixer_selem_register(handle, NULL, NULL);
+snd_mixer_load(handle);
+
+snd_mixer_selem_id_alloca(&sid);
+snd_mixer_selem_id_set_index(sid, 0);
+snd_mixer_selem_id_set_name(sid, VOL_CH);
+snd_mixer_elem_t* elem = snd_mixer_find_selem(handle, sid);
+
+snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
+snd_mixer_selem_get_playback_volume(elem, SND_MIXER_SCHN_MONO, &vol );
+long vol_percent = vol * 100 / ( int )max;
+long vol_new = vol_percent * max / 100;
+
+printf( "%ld%%", vol_percent );
+printf( "%ld%%", vol_new );
+int volume = vol_percent + 3;
+printf( "%i", volume );
+snd_mixer_selem_set_playback_volume_all(elem, volume * max / 100);
+
+snd_mixer_close(handle);
+}