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/*
* Copyright 2013 Canonical Ltd.
*
* Authors:
* Ricardo Mendoza: ricardo.mendoza@canonical.com
*
* This file is part of powerd.
*
* powerd 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.
*
* powerd 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/>.
*/
#include "powerd-internal.h"
#include "powerd-sensors.h"
#include "log.h"
#include <atomic>
#include <ubuntu/application/sensors/light.h>
#include <ubuntu/application/sensors/proximity.h>
namespace
{
UASensorsProximity* prox_sensor;
UASensorsLight* light_sensor;
GMainLoop* main_loop = NULL;
std::atomic<bool> allow_synthetic{false};
enum class Proximity { unknown, near, far };
std::atomic<Proximity> current_proximity{Proximity::unknown};
void update_and_emit_proximity(Proximity proximity)
{
current_proximity = proximity;
if (proximity == Proximity::near)
powerd_proximity_event(TRUE);
else if (proximity == Proximity::far)
powerd_proximity_event(FALSE);
}
gboolean emit_synthetic_proximity_far(void *context)
{
if (allow_synthetic)
update_and_emit_proximity(Proximity::far);
return FALSE;
}
void on_new_proximity_event(UASProximityEvent *event, void *context)
{
allow_synthetic = false;
switch (uas_proximity_event_get_distance(event))
{
case U_PROXIMITY_NEAR:
{
update_and_emit_proximity(Proximity::near);
break;
}
case U_PROXIMITY_FAR:
{
update_and_emit_proximity(Proximity::far);
break;
}
}
}
}
void powerd_sensors_proximity_enable(void)
{
//FIXME: Some proximity sensors do not
//send an initial event when enabled and nothing is close
//To work around this, we schedule a synthetic proximity
//far event in case no event has been emitted 500ms
//after enabling the proximity sensor
allow_synthetic = true;
current_proximity = Proximity::unknown;
g_timeout_add(500, emit_synthetic_proximity_far, NULL);
ua_sensors_proximity_enable(prox_sensor);
}
void powerd_sensors_proximity_disable(void)
{
allow_synthetic = false;
ua_sensors_proximity_disable(prox_sensor);
current_proximity = Proximity::unknown;
}
void powerd_sensors_proximity_emit(void)
{
update_and_emit_proximity(current_proximity);
}
void on_new_als_event(UASLightEvent *event, void *context)
{
float lux;
uas_light_event_get_light(event, &lux);
powerd_new_als_event(lux);
}
void powerd_sensors_als_enable(void)
{
if (light_sensor)
ua_sensors_light_enable(light_sensor);
}
void powerd_sensors_als_disable(void)
{
if (light_sensor)
ua_sensors_light_disable(light_sensor);
}
void powerd_sensors_init(GMainLoop *ml)
{
main_loop = ml;
prox_sensor = ua_sensors_proximity_new();
if (prox_sensor != NULL) {
ua_sensors_proximity_set_reading_cb(prox_sensor,
on_new_proximity_event,
NULL);
} else {
powerd_warn("Failed to allocate proximity sensor");
}
light_sensor = ua_sensors_light_new();
if (light_sensor) {
ua_sensors_light_set_reading_cb(light_sensor, on_new_als_event,
NULL);
} else {
powerd_warn("Failed to allocate ambient light sensor");
}
}
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