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Maemo version detection
1 | /* |
2 | * Copyright (C) 2008 Till Harbaum <till@harbaum.org>. |
3 | * |
4 | * This file is part of OSM2Go. |
5 | * |
6 | * OSM2Go is free software: you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation, either version 3 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * OSM2Go is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with OSM2Go. If not, see <http://www.gnu.org/licenses/>. |
18 | */ |
19 | |
20 | #include <stdio.h> |
21 | #include <string.h> |
22 | #include <math.h> |
23 | |
24 | #include "appdata.h" |
25 | |
26 | #ifdef ENABLE_LIBLOCATION |
27 | |
28 | #include <location/location-gps-device.h> |
29 | |
30 | pos_t *gps_get_pos(appdata_t *appdata) { |
31 | gps_state_t *gps_state = appdata->gps_state; |
32 | static pos_t retval; |
33 | |
34 | if(!gps_state->fix) |
35 | return NULL; |
36 | |
37 | retval.lat = gps_state->latitude; |
38 | retval.lon = gps_state->longitude; |
39 | |
40 | return &retval; |
41 | } |
42 | |
43 | static void |
44 | location_changed(LocationGPSDevice *device, gps_state_t *gps_state) { |
45 | |
46 | gps_state->fix = |
47 | (device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET); |
48 | |
49 | if(gps_state->fix) { |
50 | gps_state->latitude = device->fix->latitude; |
51 | gps_state->longitude = device->fix->longitude; |
52 | } |
53 | } |
54 | |
55 | void gps_init(appdata_t *appdata) { |
56 | gps_state_t *gps_state = appdata->gps_state = g_new0(gps_state_t, 1); |
57 | |
58 | printf("GPS init: Using liblocation\n"); |
59 | |
60 | gps_state->device = g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL); |
61 | if(!gps_state->device) { |
62 | printf("Unable to connect to liblocation\n"); |
63 | return; |
64 | } |
65 | |
66 | gps_state->idd_changed = |
67 | g_signal_connect(gps_state->device, "changed", |
68 | G_CALLBACK(location_changed), gps_state); |
69 | |
70 | #if MAEMO_VERSION_MAJOR < 5 |
71 | gps_state->control = location_gpsd_control_get_default(); |
72 | if(gps_state->control->can_control) { |
73 | printf("Having control over GPSD, starting it\n"); |
74 | location_gpsd_control_start(gps_state->control); |
75 | } |
76 | #endif |
77 | } |
78 | |
79 | void gps_release(appdata_t *appdata) { |
80 | gps_state_t *gps_state = appdata->gps_state; |
81 | |
82 | if(!gps_state->device) return; |
83 | |
84 | #if MAEMO_VERSION_MAJOR < 5 |
85 | /* Disconnect signal */ |
86 | if(gps_state->control->can_control) { |
87 | printf("Having control over GPSD, stopping it\n"); |
88 | location_gpsd_control_stop(gps_state->control); |
89 | } |
90 | #endif |
91 | |
92 | g_signal_handler_disconnect(gps_state->device, gps_state->idd_changed); |
93 | |
94 | g_free(appdata->gps_state); |
95 | appdata->gps_state = NULL; |
96 | } |
97 | |
98 | #else // ENABLE_LIBLOCATION |
99 | |
100 | #ifdef ENABLE_GPSBT |
101 | #include <gpsbt.h> |
102 | #include <gpsmgr.h> |
103 | #include <errno.h> |
104 | #endif |
105 | |
106 | /* maybe user configurable later on ... */ |
107 | #define GPSD_HOST "127.0.0.1" |
108 | #define GPSD_PORT 2947 |
109 | |
110 | pos_t *gps_get_pos(appdata_t *appdata) { |
111 | static pos_t retval; |
112 | |
113 | retval.lat = NAN; |
114 | |
115 | g_mutex_lock(appdata->gps_state->mutex); |
116 | if(appdata->gps_state->gpsdata.set & STATUS_SET) |
117 | if(appdata->gps_state->gpsdata.status != STATUS_NO_FIX) |
118 | if(appdata->gps_state->gpsdata.set & LATLON_SET) |
119 | retval = appdata->gps_state->gpsdata.fix.pos; |
120 | |
121 | g_mutex_unlock(appdata->gps_state->mutex); |
122 | |
123 | if(isnan(retval.lat)) |
124 | return NULL; |
125 | |
126 | return &retval; |
127 | } |
128 | |
129 | static int gps_connect(gps_state_t *gps_state) { |
130 | GnomeVFSResult vfs_result; |
131 | #ifdef ENABLE_GPSBT |
132 | char errstr[256] = ""; |
133 | |
134 | /* We need to start gpsd (via gpsbt) first. */ |
135 | memset(&gps_state->context, 0, sizeof(gpsbt_t)); |
136 | errno = 0; |
137 | |
138 | if(gpsbt_start(NULL, 0, 0, 0, errstr, sizeof(errstr), |
139 | 0, &gps_state->context) < 0) { |
140 | printf("Error connecting to GPS receiver: (%d) %s (%s)\n", |
141 | errno, strerror(errno), errstr); |
142 | } |
143 | #endif |
144 | |
145 | /************** from here down pure gnome/gtk/gpsd ********************/ |
146 | |
147 | /* try to connect to gpsd */ |
148 | /* Create a socket to interact with GPSD. */ |
149 | |
150 | int retries = 5; |
151 | while(retries && |
152 | (GNOME_VFS_OK != (vfs_result = gnome_vfs_inet_connection_create( |
153 | &gps_state->iconn, GPSD_HOST, GPSD_PORT, NULL)))) { |
154 | printf("Error creating connection to GPSD, retrying ...\n"); |
155 | |
156 | retries--; |
157 | sleep(1); |
158 | } |
159 | |
160 | if(!retries) { |
161 | printf("Finally failed ...\n"); |
162 | return -1; |
163 | } |
164 | |
165 | retries = 5; |
166 | while(retries && ((gps_state->socket = |
167 | gnome_vfs_inet_connection_to_socket(gps_state->iconn)) == NULL)) { |
168 | printf("Error creating connecting GPSD socket, retrying ...\n"); |
169 | |
170 | retries--; |
171 | sleep(1); |
172 | } |
173 | |
174 | if(!retries) { |
175 | printf("Finally failed ...\n"); |
176 | gnome_vfs_inet_connection_destroy(gps_state->iconn, NULL); |
177 | return -1; |
178 | } |
179 | |
180 | GTimeVal timeout = { 10, 0 }; |
181 | if(GNOME_VFS_OK != (vfs_result = gnome_vfs_socket_set_timeout( |
182 | gps_state->socket, &timeout, NULL))) { |
183 | printf("Error setting GPSD timeout\n"); |
184 | gnome_vfs_inet_connection_destroy(gps_state->iconn, NULL); |
185 | return -1; |
186 | } |
187 | |
188 | printf("GPSD connected ...\n"); |
189 | |
190 | return 0; |
191 | } |
192 | |
193 | void gps_clear_fix(struct gps_fix_t *fixp) { |
194 | fixp->mode = MODE_NOT_SEEN; |
195 | fixp->pos.lat = fixp->pos.lon = NAN; |
196 | fixp->eph = NAN; |
197 | } |
198 | |
199 | /* unpack a daemon response into a status structure */ |
200 | static void gps_unpack(char *buf, struct gps_data_t *gpsdata) { |
201 | char *ns, *sp, *tp; |
202 | |
203 | for(ns = buf; ns; ns = strstr(ns+1, "GPSD")) { |
204 | if(strncmp(ns, "GPSD", 4) == 0) { |
205 | /* the following should execute each time we have a good next sp */ |
206 | for (sp = ns + 5; *sp != '\0'; sp = tp+1) { |
207 | tp = sp + strcspn(sp, ",\r\n"); |
208 | if (*tp == '\0') tp--; |
209 | else *tp = '\0'; |
210 | |
211 | switch (*sp) { |
212 | case 'O': |
213 | if (sp[2] == '?') { |
214 | gpsdata->set = |
215 | (gpsdata->set & SATELLITE_SET) | // fix for below |
216 | MODE_SET | STATUS_SET; // this clears sat info?? |
217 | gpsdata->status = STATUS_NO_FIX; |
218 | gps_clear_fix(&gpsdata->fix); |
219 | } else { |
220 | struct gps_fix_t nf; |
221 | char tag[MAXTAGLEN+1], alt[20], eph[20], lat[20], lon[20], mode[2]; |
222 | int st = sscanf(sp+2, |
223 | "%8s %*s %*s %19s %19s " |
224 | "%19s %19s %*s %*s %*s %*s " |
225 | "%*s %*s %*s %1s", |
226 | tag, lat, lon, |
227 | alt, eph, |
228 | mode); |
229 | if (st >= 5) { |
230 | #define DEFAULT(val) (val[0] == '?') ? NAN : g_ascii_strtod(val, NULL) |
231 | nf.pos.lat = DEFAULT(lat); |
232 | nf.pos.lon = DEFAULT(lon); |
233 | nf.eph = DEFAULT(eph); |
234 | #undef DEFAULT |
235 | if (st >= 6) |
236 | nf.mode = (mode[0] == '?') ? MODE_NOT_SEEN : atoi(mode); |
237 | else |
238 | nf.mode = (alt[0] == '?') ? MODE_2D : MODE_3D; |
239 | gpsdata->fix = nf; |
240 | gpsdata->set |= LATLON_SET|MODE_SET; |
241 | gpsdata->status = STATUS_FIX; |
242 | gpsdata->set |= STATUS_SET; |
243 | } |
244 | } |
245 | break; |
246 | } |
247 | } |
248 | } |
249 | } |
250 | } |
251 | |
252 | gpointer gps_thread(gpointer data) { |
253 | GnomeVFSFileSize bytes_read; |
254 | GnomeVFSResult vfs_result; |
255 | char str[512]; |
256 | appdata_t *appdata = (appdata_t*)data; |
257 | |
258 | const char *msg = "o\r\n"; /* pos request */ |
259 | |
260 | appdata->gps_state->gpsdata.set = 0; |
261 | |
262 | gboolean connected = FALSE; |
263 | |
264 | while(1) { |
265 | if(appdata->gps_enabled) { |
266 | if(!connected) { |
267 | printf("trying to connect\n"); |
268 | |
269 | if(gps_connect(appdata->gps_state) < 0) |
270 | sleep(10); |
271 | else |
272 | connected = TRUE; |
273 | } else { |
274 | if(GNOME_VFS_OK == |
275 | (vfs_result = gnome_vfs_socket_write(appdata->gps_state->socket, |
276 | msg, strlen(msg)+1, &bytes_read, NULL))) { |
277 | |
278 | /* update every second, wait here to make sure a complete */ |
279 | /* reply is received */ |
280 | sleep(1); |
281 | |
282 | if(bytes_read == (strlen(msg)+1)) { |
283 | vfs_result = gnome_vfs_socket_read(appdata->gps_state->socket, |
284 | str, sizeof(str)-1, &bytes_read, NULL); |
285 | if(vfs_result == GNOME_VFS_OK) { |
286 | str[bytes_read] = 0; |
287 | |
288 | printf("msg: %s (%d)\n", str, strlen(str)); |
289 | |
290 | g_mutex_lock(appdata->gps_state->mutex); |
291 | |
292 | appdata->gps_state->gpsdata.set &= |
293 | ~(LATLON_SET|MODE_SET|STATUS_SET); |
294 | |
295 | gps_unpack(str, &appdata->gps_state->gpsdata); |
296 | g_mutex_unlock(appdata->gps_state->mutex); |
297 | } |
298 | } |
299 | } |
300 | } |
301 | } else { |
302 | if(connected) { |
303 | printf("stopping GPS connection due to user request\n"); |
304 | gnome_vfs_inet_connection_destroy(appdata->gps_state->iconn, NULL); |
305 | |
306 | #ifdef ENABLE_GPSBT |
307 | gpsbt_stop(&appdata->gps_state->context); |
308 | #endif |
309 | connected = FALSE; |
310 | } else |
311 | sleep(1); |
312 | } |
313 | } |
314 | |
315 | printf("GPS thread ended???\n"); |
316 | return NULL; |
317 | } |
318 | |
319 | void gps_init(appdata_t *appdata) { |
320 | appdata->gps_state = g_new0(gps_state_t, 1); |
321 | |
322 | printf("GPS init: Using gpsd\n"); |
323 | |
324 | /* start a new thread to listen to gpsd */ |
325 | appdata->gps_state->mutex = g_mutex_new(); |
326 | appdata->gps_state->thread_p = |
327 | g_thread_create(gps_thread, appdata, FALSE, NULL); |
328 | } |
329 | |
330 | void gps_release(appdata_t *appdata) { |
331 | #ifdef ENABLE_GPSBT |
332 | gpsbt_stop(&appdata->gps_state->context); |
333 | #endif |
334 | g_free(appdata->gps_state); |
335 | appdata->gps_state = NULL; |
336 | } |
337 | |
338 | #endif // ENABLE_LIBLOCATION |