+/*
+ * Maemo5LocationPrivate
+ *
+ * @author Toni Jussila <toni.jussila@fudeco.com>
+ * @copyright (c) 2010 Speed Freak team
+ * @license http://opensource.org/licenses/gpl-license.php GNU Public License
+ */
+
+#include "maemo5locationprivate.h"
+
+/**
+ *Default constructor of this class.
+ *@param Maemo5Location pointer to public interface.
+ */
+Maemo5LocationPrivate::Maemo5LocationPrivate(Maemo5Location* location):QObject(location)
+{
+ //Initialize variables
+ gps_online = false;
+ usegps = -1;
+ resetAll();
+ //Get gps control object
+ control = location_gpsd_control_get_default();
+ //create gps device
+ device = (LocationGPSDevice*) g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL);
+
+ g_signal_connect(device, "changed", G_CALLBACK(gps_data_changed), this);
+ g_signal_connect(device, "connected", G_CALLBACK(gps_connected_func), this);
+ g_signal_connect(device, "disconnected", G_CALLBACK(gps_disconnected_func), this);
+
+ g_signal_connect(control, "error-verbose", G_CALLBACK(gps_error_func), this);
+ g_signal_connect(control, "gpsd_running", G_CALLBACK(gpsd_running_func), this);
+ g_signal_connect(control, "gpsd_stopped", G_CALLBACK(gpsd_running_func), this);
+
+}
+/**
+ *Destructor of this class. Should be used to release all allocated resources.
+ */
+Maemo5LocationPrivate::~Maemo5LocationPrivate()
+{
+ delete device;
+ delete control;
+}
+
+/**
+ *This function is used to start to poll with gprs
+ */
+void Maemo5LocationPrivate::get_acwp()
+{
+ g_object_set(G_OBJECT(control), "preferred-method", LOCATION_METHOD_ACWP, NULL);
+ usegps = 0;
+ restart();
+}
+
+/**
+ *This function starts to poll via gps interface
+ */
+void Maemo5LocationPrivate::get_agnss()
+{
+ g_object_set(G_OBJECT(control), "preferred-method", LOCATION_METHOD_AGNSS, NULL);
+ usegps = 1;
+ restart();
+}
+
+/**
+ *Stop polling gps
+ */
+void Maemo5LocationPrivate::stop()
+{
+ location_gpsd_control_stop(control);
+}
+
+/**
+ *Stop and restart polling
+ */
+void Maemo5LocationPrivate::restart()
+{
+ location_gpsd_control_stop(control);
+ location_gpsd_control_start(control);
+}
+
+/**
+ *This function is called when device managed to connect to the lcoation server.
+ *Function emits gps_connected signal.
+ *@param Pointer to LocationGPSDevice class
+ *@param Pointer to Maemo5LocationPrivate class
+ */
+void gps_connected_func(LocationGPSDevice *device, Maemo5LocationPrivate *gps)
+{
+ emit gps->gps_connected();
+}
+
+/**
+ *This function is called when device is disconnected from the location server.
+ *Function emits gps_disconnected signal.
+ *Also this function resets all arguments of Maemo5LcoationPrivate class.
+ *@param Pointer to LocationGPSDevice class
+ *@param Pointer to Maemo5LocationPrivate class
+ */
+void gps_disconnected_func(LocationGPSDevice *device, Maemo5LocationPrivate *gps)
+{
+ gps->resetAll();
+ emit gps->gps_disconnected();
+}
+
+/**
+ *This function is called after the location_gpsd_control_stop has been called.
+ *@param Pointer to LocationGPSDControl class
+ *@param Pointer to Maemo5LocationPrivate class
+ */
+void gpsd_stopped_func(LocationGPSDControl *control, Maemo5LocationPrivate *gps)
+{
+ emit gps->gpsd_stopped();
+}
+
+/**
+ *This function is called when an error has occurred.
+ *@param Pointer to LocationGPSDControl class
+ *@param error code
+ *@param Pointer to Maemo5LocationPrivate class
+ */
+void gps_error_func(LocationGPSDControl *control, gint error, Maemo5LocationPrivate *gps)
+{
+
+ switch (error) {
+ case LOCATION_ERROR_USER_REJECTED_DIALOG:
+ emit gps->gps_error(0);
+ g_debug("User didn't enable requested methods");
+ break;
+ case LOCATION_ERROR_USER_REJECTED_SETTINGS:
+ emit gps->gps_error(1);
+ g_debug("User changed settings, which disabled location");
+ break;
+ case LOCATION_ERROR_BT_GPS_NOT_AVAILABLE:
+ emit gps->gps_error(2);
+ g_debug("Problems with BT GPS");
+ break;
+ case LOCATION_ERROR_METHOD_NOT_ALLOWED_IN_OFFLINE_MODE:
+ emit gps->gps_error(3);
+ g_debug("Requested method is not allowed in offline mode");
+ break;
+ case LOCATION_ERROR_SYSTEM:
+ emit gps->gps_error(4);
+ g_debug("System error");
+ break;
+ }
+}
+
+/**
+ *This function is called after the location_gpsd_control_start has been called.
+ *@param Pointer to LocationGPSDControl class
+ *@param Pointer to Maemo5LocationPrivate class
+ */
+void gpsd_running_func(LocationGPSDControl *control, Maemo5LocationPrivate *gps)
+{
+ emit gps->gpsd_running();
+}
+
+/**
+ *Callback function to catch gps signals.
+ *@param Pointer to LocationGPSDControl class
+ *@param Pointer to Maemo5LocationPrivate class
+ */
+void gps_data_changed(LocationGPSDevice *device, Maemo5LocationPrivate *gps)
+{
+ //First check that LocationGpsDeviceFix can be found...this data structure contains the location info.
+ if(gps->device->fix)
+ {
+ //Check that there are fields
+ if(gps->device->fix->fields)
+ {
+ //Store values and emit signal
+ if(gps->device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET)
+ {
+ gps->latitude = gps->device->fix->latitude;
+ gps->longitude = gps->device->fix->longitude;
+ gps->eph = gps->device->fix->eph;
+ }
+
+
+ gps->satellites_in_use = gps->device->satellites_in_use;
+ gps->satellites_in_view = gps->device->satellites_in_view;
+
+ if(gps->device->fix->fields & LOCATION_GPS_DEVICE_TIME_SET)
+ {
+ gps->time = gps->device->fix->time;
+ gps->ept = gps->device->fix->ept;
+ }
+
+ if(gps->device->fix->fields & LOCATION_GPS_DEVICE_ALTITUDE_SET)
+ {
+ gps->altitude = gps->device->fix->altitude;
+ gps->epv = gps->device->fix->epv;
+ }
+
+ if(gps->device->fix->fields & LOCATION_GPS_DEVICE_TRACK_SET)
+ {
+ gps->track = gps->device->fix->track;
+ gps->epd = gps->device->fix->epd;
+ }
+
+ if(gps->device->fix->fields & LOCATION_GPS_DEVICE_SPEED_SET)
+ {
+ gps->speed = gps->device->fix->speed;
+ gps->eps = gps->device->fix->eps;
+ }
+
+ if(gps->device->fix->fields & LOCATION_GPS_DEVICE_CLIMB_SET)
+ {
+ gps->climb = gps->device->fix->climb;
+ gps->epc = gps->device->fix->epc;
+ }
+
+
+ // Calculate average signal strength of satellites in use
+ int temp = 0;
+ if(gps->satellites_in_use != 0)
+ {
+ for(int i=0 ; i < gps->satellites_in_use ; i++)
+ {
+ LocationGPSDeviceSatellite *view = (LocationGPSDeviceSatellite*) g_ptr_array_index (gps->device->satellites, i);
+ temp = temp + view->signal_strength;
+ }
+ gps->signal_strength = (temp / gps->satellites_in_use);
+ }
+
+
+ if(gps->usegps == 0)
+ {
+ emit gps->awcp();
+ }
+ else if(gps->usegps == 1)
+ {
+ emit gps->agnss();
+ }
+ else
+ {
+ emit gps->locationUpdated();
+ }
+ }
+ }
+
+}
+
+/**
+ *Resets all arguments of Maemo5LocationPrivate class.
+ */
+void Maemo5LocationPrivate::resetAll()
+{
+ time = 0;
+ latitude = 0;
+ longitude = 0;
+ satellites_in_view = 0;
+ satellites_in_use = 0;
+ ept = 0;
+ eph = 0;
+ altitude = 0;
+ epv = 0;
+ track = 0;
+ epd = 0;
+ speed = 0;
+ eps = 0;
+ climb = 0;
+ epc = 0;
+}
+
+/**
+ *Returns distance between two points in kilometers.
+ *@param latitude of first point
+ *@param longitude of first point
+ *@param latitude of second point
+ *@param longitude of second point
+ */
+double Maemo5LocationPrivate::distance_between_two_points(double latitude_s, double longitude_s, double latitude_f, double longitude_f)
+{
+ double distance = 0;
+ return distance = location_distance_between(latitude_s, longitude_s, latitude_f, longitude_f);
+}
projects / speedfreak / commitdiff
