RetroArch/driver-contexts/location_driver.c

142 lines
4.4 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2014 - Daniel De Matteis
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
static const location_driver_t *location_drivers[] = {
#ifdef ANDROID
&location_android,
#endif
#if defined(IOS) || defined(OSX)
&location_apple,
#endif
NULL,
};
static int find_location_driver_index(const char *driver)
{
unsigned i;
for (i = 0; location_drivers[i]; i++)
if (strcasecmp(driver, location_drivers[i]->ident) == 0)
return i;
return -1;
}
static void find_location_driver(void)
{
int i = find_location_driver_index(g_settings.location.driver);
if (i >= 0)
driver.location = location_drivers[i];
else
{
unsigned d;
RARCH_ERR("Couldn't find any location driver named \"%s\"\n", g_settings.location.driver);
RARCH_LOG_OUTPUT("Available location drivers are:\n");
for (d = 0; location_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", location_drivers[d]->ident);
rarch_fail(1, "find_location_driver()");
}
}
void find_prev_location_driver(void)
{
int i = find_location_driver_index(g_settings.location.driver);
if (i > 0)
strlcpy(g_settings.location.driver, location_drivers[i - 1]->ident, sizeof(g_settings.location.driver));
else
RARCH_WARN("Couldn't find any previous location driver (current one: \"%s\").\n", g_settings.location.driver);
}
void find_next_location_driver(void)
{
int i = find_location_driver_index(g_settings.location.driver);
if (i >= 0 && location_drivers[i + 1])
strlcpy(g_settings.location.driver, location_drivers[i + 1]->ident, sizeof(g_settings.location.driver));
else
RARCH_WARN("Couldn't find any next location driver (current one: \"%s\").\n", g_settings.location.driver);
}
bool driver_location_start(void)
{
if (driver.location && driver.location_data && driver.location->start)
{
if (g_settings.location.allow)
return driver.location->start(driver.location_data);
else
msg_queue_push(g_extern.msg_queue, "Location is explicitly disabled.\n", 1, 180);
return false;
}
else
return false;
}
void driver_location_stop(void)
{
if (driver.location && driver.location->stop && driver.location_data)
driver.location->stop(driver.location_data);
}
void driver_location_set_interval(unsigned interval_msecs, unsigned interval_distance)
{
if (driver.location && driver.location->set_interval && driver.location_data)
driver.location->set_interval(driver.location_data, interval_msecs, interval_distance);
}
bool driver_location_get_position(double *lat, double *lon, double *horiz_accuracy,
double *vert_accuracy)
{
if (driver.location && driver.location->get_position && driver.location_data)
return driver.location->get_position(driver.location_data, lat, lon, horiz_accuracy, vert_accuracy);
*lat = 0.0;
*lon = 0.0;
*horiz_accuracy = 0.0;
*vert_accuracy = 0.0;
return false;
}
void init_location(void)
{
// Resource leaks will follow if location interface is initialized twice.
if (driver.location_data)
return;
find_location_driver();
driver.location_data = location_init_func();
if (!driver.location_data)
{
RARCH_ERR("Failed to initialize location driver. Will continue without location.\n");
g_extern.location_active = false;
}
if (g_extern.system.location_callback.initialized)
g_extern.system.location_callback.initialized();
}
void uninit_location(void)
{
if (driver.location_data && driver.location)
{
if (g_extern.system.location_callback.deinitialized)
g_extern.system.location_callback.deinitialized();
if (driver.location->free)
driver.location->free(driver.location_data);
}
driver.location_data = NULL;
}