/**
* Callback for sink changes reported by PulseAudio.
*/
static void
xvd_update_sink_callback (pa_context *c,
const pa_sink_info *info,
int eol,
void *userdata)
{
XvdInstance *i = (XvdInstance *) userdata;
/* detect the end of the list */
if (eol > 0)
return;
else
{
if (!c || !userdata || !info)
{
g_warning ("xvd_update_sink_callback: invalid argument");
return;
}
/* re-fetch infos from PulseAudio */
i->sink_index = info->index;
old_volume = i->volume;
i->volume = info->volume;
old_mute = i->mute;
i->mute = info->mute;
#ifdef HAVE_LIBNOTIFY
/* notify user of the possible changes */
if (xvd_get_readable_volume (&old_volume) != xvd_get_readable_volume (&i->volume)
|| old_mute != i->mute)
xvd_notify_volume_callback (c, 1, i);
#endif
}
}
/**
* Decides the type of notification to show on a change.
*/
static void
xvd_notify_volume_callback (pa_context *c,
int success,
void *userdata)
{
XvdInstance *i = (XvdInstance *) userdata;
guint32 r_oldv, r_curv;
if (!c || !userdata)
{
g_warning ("xvd_notify_volume_update: invalid argument");
return;
}
if (!success)
{
g_warning ("xvd_notify_volume_update: operation failed, %s",
pa_strerror (pa_context_errno (c)));
return;
}
/* the sink was (un)muted */
if (old_mute != i->mute)
{
xvd_notify_volume_notification (i);
return;
}
r_oldv = xvd_get_readable_volume (&old_volume);
r_curv = xvd_get_readable_volume (&i->volume);
/* trying to go above 100 */
if (r_oldv == 100 && r_curv >= r_oldv)
xvd_notify_overshoot_notification (i);
/* trying to go below 0 */
else if (r_oldv == 0 && r_curv <= r_oldv)
xvd_notify_undershoot_notification (i);
/* normal */
else
xvd_notify_volume_notification (i);
}
void
xvd_notify_volume_notification(XvdInstance *Inst)
{
gint vol = xvd_get_readable_volume (&Inst->volume);
if (vol == 0)
xvd_notify_notification (Inst, (Inst->mute) ? "audio-volume-muted" : "audio-volume-off", vol);
else if (vol < 34)
xvd_notify_notification (Inst, (Inst->mute) ? "audio-volume-muted" : "audio-volume-low", vol);
else if (vol < 67)
xvd_notify_notification (Inst, (Inst->mute) ? "audio-volume-muted" : "audio-volume-medium", vol);
else
xvd_notify_notification (Inst, (Inst->mute) ? "audio-volume-muted" : "audio-volume-high", vol);
}
