C++ (Cpp) convert_to_dB Exemples

Exemple #1

Fichier : simple_none.c Projet : KeTao/alsa-lib

static int ask_vol_dB_ops(snd_mixer_elem_t *elem,
			  int dir,
			  long value,
			  long *dBvalue)
{
	selem_none_t *s = snd_mixer_elem_get_private(elem);
	selem_ctl_t *c;

	c = get_selem_ctl(s, dir);
	if (! c)
		return -EINVAL;
	int res = convert_to_dB(c->elem, &s->str[dir], value, dBvalue);
	return res;
}

Exemple #2

Fichier : simple_none.c Projet : OpenSmalltalk/opensmalltalk-vm

static int get_dB_ops(snd_mixer_elem_t *elem,
                      int dir,
                      snd_mixer_selem_channel_id_t channel,
                      long *value)
{
	selem_none_t *s = snd_mixer_elem_get_private(elem);
	selem_ctl_t *c;
	int err;
	long volume, db_gain;

	c = get_selem_ctl(s, dir);
	if (! c)
		return -EINVAL;
	if ((err = get_volume_ops(elem, dir, channel, &volume)) < 0)
		goto _err;
	if ((err = convert_to_dB(c->elem, &s->str[dir], volume, &db_gain)) < 0)
		goto _err;
	err = 0;
	*value = db_gain;
 _err:
	return err;
}