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/*
* -*- Mode:Vala; indent-tabs-mode:t; tab-width:4; encoding:utf8 -*-
*
* Copyright 2015 Canonical Ltd.
*
* 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; version 3.
*
* 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/>.
*
* Authors:
* Charles Kerr <charles.kerr@canonical.com>
*/
using PulseAudio;
public class VolumeWarningPulse : VolumeWarning
{
public VolumeWarningPulse (IndicatorSound.Options options,
PulseAudio.GLibMainLoop pgloop) {
base(options);
_pgloop = pgloop;
pulse_reconnect();
}
~VolumeWarningPulse () {
clear_timer(ref _pulse_reconnect_timer);
clear_timer(ref _update_sink_timer);
clear_timer(ref _update_sink_inputs_timer);
pulse_disconnect();
}
protected override void sound_system_set_multimedia_volume (PulseAudio.Volume volume) {
var index = _warning_sink_index;
GLib.return_if_fail(_pulse_context != null);
GLib.return_if_fail(index != PulseAudio.INVALID_INDEX);
GLib.return_if_fail(volume != PulseAudio.Volume.INVALID);
unowned CVolume cvol = CVolume ();
cvol.set (1, volume);
GLib.message ("setting multimedia volume to %s", cvol.to_string());
_pulse_context.set_sink_volume_by_index (index, cvol);
}
protected override void preshow () {
_warning_sink_index = _multimedia_sink_index;
}
/***
**** PulseAudio: Tracking the active multimedia sink input
***/
private unowned PulseAudio.GLibMainLoop _pgloop = null;
private PulseAudio.Context _pulse_context = null;
private uint _pulse_reconnect_timer = 0;
private uint _update_sink_timer = 0;
private uint _update_sink_inputs_timer = 0;
private GenericSet<uint32> _pending_sink_inputs = new GenericSet<uint32>(direct_hash, direct_equal);
private uint soon_interval_msec = 500;
private uint32 _warning_sink_index = PulseAudio.INVALID_INDEX;
private uint32 _multimedia_sink_index = PulseAudio.INVALID_INDEX;
private uint32 _multimedia_sink_input_index = PulseAudio.INVALID_INDEX;
/***/
private void update_multimedia_volume () {
GLib.return_if_fail(_pulse_context != null);
GLib.return_if_fail(_multimedia_sink_index != PulseAudio.INVALID_INDEX);
_pulse_context.get_sink_info_by_index(_multimedia_sink_index, (c,i) => {
if (i != null)
multimedia_volume = i.volume.max();
});
}
private void update_multimedia_volume_soon () {
if (_update_sink_timer == 0) {
_update_sink_timer = Timeout.add (soon_interval_msec, () => {
_update_sink_timer = 0;
update_multimedia_volume ();
return Source.REMOVE;
});
}
}
private void set_multimedia_sink_index(uint32 index) {
if (index == PulseAudio.INVALID_INDEX) {
_multimedia_sink_index = PulseAudio.INVALID_INDEX;
multimedia_volume = PulseAudio.Volume.INVALID;
} else if (_multimedia_sink_index != index) {
_multimedia_sink_index = index;
multimedia_volume = PulseAudio.Volume.INVALID;
update_multimedia_volume_soon();
}
}
/***/
private bool is_active_multimedia (SinkInputInfo i) {
if (i.corked != 0)
return false;
var key = PulseAudio.Proplist.PROP_MEDIA_ROLE;
var media_role = i.proplist.gets(key);
if (media_role != "multimedia")
return false;
return true;
}
private void clear_multimedia () {
_multimedia_sink_input_index = PulseAudio.INVALID_INDEX;
set_multimedia_sink_index (PulseAudio.INVALID_INDEX);
multimedia_active = false;
}
private void on_sink_input_info (Context c, SinkInputInfo? i, int eol) {
if (i == null)
return;
if (is_active_multimedia (i)) {
GLib.message ("on_sink_input_info() setting multimedia sink input index to %d, sink index to %d", (int)i.index, (int)i.sink);
_multimedia_sink_input_index = i.index;
set_multimedia_sink_index (i.sink);
multimedia_active = true;
}
else if (i.index == _multimedia_sink_input_index) {
clear_multimedia();
}
}
private void update_all_sink_inputs () {
_pulse_context.get_sink_input_info_list (on_sink_input_info);
}
private void update_sink_input (uint32 index) {
_pulse_context.get_sink_input_info (index, on_sink_input_info);
}
private void update_sink_input_soon (uint32 index) {
_pending_sink_inputs.add(index);
if (_update_sink_inputs_timer == 0) {
_update_sink_inputs_timer = Timeout.add (soon_interval_msec, () => {
_pending_sink_inputs.foreach((i) => update_sink_input(i));
_pending_sink_inputs.remove_all();
_update_sink_inputs_timer = 0;
return Source.REMOVE;
});
}
}
private void context_events_cb (Context c, Context.SubscriptionEventType t, uint32 index) {
switch (t & Context.SubscriptionEventType.FACILITY_MASK)
{
case Context.SubscriptionEventType.SINK:
// if something happens to the sink connected to our mm sink input,
// get its updated info to keep our multimedia volume up-to-date
if ((index == _multimedia_sink_index) && (index != PulseAudio.INVALID_INDEX))
update_multimedia_volume_soon();
break;
case Context.SubscriptionEventType.SINK_INPUT:
switch (t & Context.SubscriptionEventType.TYPE_MASK)
{
// if a SinkInput changed, get its updated info
// to keep our multimedia indices up-to-date
case Context.SubscriptionEventType.NEW:
case Context.SubscriptionEventType.CHANGE:
update_sink_input_soon(index);
break;
// if the multimedia sink input was removed,
// reset our mm fields and look for a new mm sink input
case Context.SubscriptionEventType.REMOVE:
if (index == _multimedia_sink_input_index) {
clear_multimedia();
update_all_sink_inputs ();
}
break;
default:
GLib.debug ("Sink input event not known.");
break;
}
break;
default:
break;
}
}
private void pulse_context_state_callback (Context c) {
switch (c.get_state ()) {
case Context.State.READY:
c.set_subscribe_callback (context_events_cb);
c.subscribe (PulseAudio.Context.SubscriptionMask.SINK |
PulseAudio.Context.SubscriptionMask.SINK_INPUT);
update_all_sink_inputs ();
break;
case Context.State.FAILED:
case Context.State.TERMINATED:
pulse_reconnect_soon ();
break;
default:
break;
}
}
private void pulse_disconnect () {
if (_pulse_context != null) {
_pulse_context.disconnect ();
_pulse_context = null;
}
}
private void pulse_reconnect_soon () {
if (_pulse_reconnect_timer == 0) {
_pulse_reconnect_timer = Timeout.add_seconds (2, () => {
_pulse_reconnect_timer = 0;
pulse_reconnect();
return Source.REMOVE;
});
}
}
void pulse_reconnect () {
pulse_disconnect();
var props = new Proplist ();
props.sets (Proplist.PROP_APPLICATION_NAME, "Ubuntu Audio Settings");
props.sets (Proplist.PROP_APPLICATION_ID, "com.canonical.settings.sound");
props.sets (Proplist.PROP_APPLICATION_ICON_NAME, "multimedia-volume-control");
props.sets (Proplist.PROP_APPLICATION_VERSION, "0.1");
_pulse_context = new PulseAudio.Context (_pgloop.get_api(), null, props);
_pulse_context.set_state_callback (pulse_context_state_callback);
var server_string = Environment.get_variable ("PULSE_SERVER");
if (_pulse_context.connect (server_string, Context.Flags.NOFAIL, null) < 0)
GLib.warning ("pa_context_connect() failed: %s\n", PulseAudio.strerror(_pulse_context.errno()));
}
}
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