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Track handling redone
1 | harbaum | 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 | harbaum | 118 | #ifdef ENABLE_LIBLOCATION |
27 | |||
28 | #include <location/location-gps-device.h> | ||
29 | |||
30 | harbaum | 156 | gboolean gps_get_pos(appdata_t *appdata, pos_t *pos, float *alt) { |
31 | harbaum | 144 | if(!appdata->gps_enabled) |
32 | harbaum | 156 | return FALSE; |
33 | harbaum | 144 | |
34 | harbaum | 118 | gps_state_t *gps_state = appdata->gps_state; |
35 | |||
36 | if(!gps_state->fix) | ||
37 | harbaum | 156 | return FALSE; |
38 | harbaum | 118 | |
39 | harbaum | 156 | if(pos) { |
40 | pos->lat = gps_state->latitude; | ||
41 | pos->lon = gps_state->longitude; | ||
42 | } | ||
43 | harbaum | 118 | |
44 | harbaum | 156 | if(alt) |
45 | *alt = gps_state->altitude; | ||
46 | |||
47 | return TRUE; | ||
48 | harbaum | 118 | } |
49 | |||
50 | static void | ||
51 | location_changed(LocationGPSDevice *device, gps_state_t *gps_state) { | ||
52 | |||
53 | gps_state->fix = | ||
54 | (device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET); | ||
55 | |||
56 | if(gps_state->fix) { | ||
57 | gps_state->latitude = device->fix->latitude; | ||
58 | gps_state->longitude = device->fix->longitude; | ||
59 | } | ||
60 | harbaum | 156 | |
61 | if(device->fix->fields & LOCATION_GPS_DEVICE_ALTITUDE_SET) | ||
62 | gps_state->altitude = device->fix->altitude; | ||
63 | else | ||
64 | gps_state->altitude = NAN; | ||
65 | harbaum | 118 | } |
66 | |||
67 | void gps_init(appdata_t *appdata) { | ||
68 | gps_state_t *gps_state = appdata->gps_state = g_new0(gps_state_t, 1); | ||
69 | |||
70 | printf("GPS init: Using liblocation\n"); | ||
71 | |||
72 | gps_state->device = g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL); | ||
73 | if(!gps_state->device) { | ||
74 | printf("Unable to connect to liblocation\n"); | ||
75 | return; | ||
76 | } | ||
77 | |||
78 | gps_state->idd_changed = | ||
79 | g_signal_connect(gps_state->device, "changed", | ||
80 | G_CALLBACK(location_changed), gps_state); | ||
81 | |||
82 | harbaum | 124 | #if MAEMO_VERSION_MAJOR < 5 |
83 | harbaum | 118 | gps_state->control = location_gpsd_control_get_default(); |
84 | harbaum | 144 | |
85 | if(appdata->gps_enabled && gps_state->control && | ||
86 | gps_state->control->can_control) { | ||
87 | printf("Having control over GPSD and GPS is to be enabled, starting it\n"); | ||
88 | harbaum | 118 | location_gpsd_control_start(gps_state->control); |
89 | } | ||
90 | harbaum | 124 | #endif |
91 | harbaum | 118 | } |
92 | |||
93 | void gps_release(appdata_t *appdata) { | ||
94 | gps_state_t *gps_state = appdata->gps_state; | ||
95 | |||
96 | if(!gps_state->device) return; | ||
97 | |||
98 | harbaum | 124 | #if MAEMO_VERSION_MAJOR < 5 |
99 | harbaum | 144 | if(gps_state->control && gps_state->control->can_control) { |
100 | harbaum | 118 | printf("Having control over GPSD, stopping it\n"); |
101 | location_gpsd_control_stop(gps_state->control); | ||
102 | } | ||
103 | harbaum | 124 | #endif |
104 | harbaum | 118 | |
105 | harbaum | 144 | /* Disconnect signal */ |
106 | harbaum | 118 | g_signal_handler_disconnect(gps_state->device, gps_state->idd_changed); |
107 | |||
108 | g_free(appdata->gps_state); | ||
109 | appdata->gps_state = NULL; | ||
110 | } | ||
111 | |||
112 | harbaum | 144 | void gps_enable(appdata_t *appdata, gboolean enable) { |
113 | appdata->gps_enabled = enable; | ||
114 | |||
115 | #if MAEMO_VERSION_MAJOR < 5 | ||
116 | gps_state_t *gps_state = appdata->gps_state; | ||
117 | if(gps_state->control && gps_state->control->can_control) { | ||
118 | printf("Having control over GPSD, %sing it\n", | ||
119 | enable?"start":"stop"); | ||
120 | |||
121 | if(enable) | ||
122 | location_gpsd_control_start(gps_state->control); | ||
123 | else | ||
124 | location_gpsd_control_stop(gps_state->control); | ||
125 | } | ||
126 | #endif | ||
127 | } | ||
128 | |||
129 | harbaum | 118 | #else // ENABLE_LIBLOCATION |
130 | |||
131 | harbaum | 112 | #ifdef ENABLE_GPSBT |
132 | harbaum | 1 | #include <gpsbt.h> |
133 | #include <gpsmgr.h> | ||
134 | #include <errno.h> | ||
135 | #endif | ||
136 | |||
137 | /* maybe user configurable later on ... */ | ||
138 | #define GPSD_HOST "127.0.0.1" | ||
139 | #define GPSD_PORT 2947 | ||
140 | |||
141 | harbaum | 156 | gboolean gps_get_pos(appdata_t *appdata, pos_t *pos, float *alt) { |
142 | if(pos) pos->lat = NAN; | ||
143 | harbaum | 1 | |
144 | g_mutex_lock(appdata->gps_state->mutex); | ||
145 | harbaum | 156 | if(appdata->gps_state->gpsdata.set & STATUS_SET) { |
146 | if(appdata->gps_state->gpsdata.status != STATUS_NO_FIX) { | ||
147 | harbaum | 1 | if(appdata->gps_state->gpsdata.set & LATLON_SET) |
148 | harbaum | 156 | *pos = appdata->gps_state->gpsdata.fix.pos; |
149 | if(appdata->gps_state->gpsdata.set & ALTITUDE_SET) | ||
150 | *alt = appdata->gps_state->gpsdata.fix.alt; | ||
151 | } | ||
152 | } | ||
153 | |||
154 | harbaum | 1 | g_mutex_unlock(appdata->gps_state->mutex); |
155 | harbaum | 156 | |
156 | return(!isnan(pos->lat)); | ||
157 | harbaum | 1 | } |
158 | |||
159 | static int gps_connect(gps_state_t *gps_state) { | ||
160 | GnomeVFSResult vfs_result; | ||
161 | harbaum | 112 | #ifdef ENABLE_GPSBT |
162 | harbaum | 1 | char errstr[256] = ""; |
163 | |||
164 | /* We need to start gpsd (via gpsbt) first. */ | ||
165 | memset(&gps_state->context, 0, sizeof(gpsbt_t)); | ||
166 | errno = 0; | ||
167 | |||
168 | if(gpsbt_start(NULL, 0, 0, 0, errstr, sizeof(errstr), | ||
169 | 0, &gps_state->context) < 0) { | ||
170 | printf("Error connecting to GPS receiver: (%d) %s (%s)\n", | ||
171 | errno, strerror(errno), errstr); | ||
172 | } | ||
173 | #endif | ||
174 | |||
175 | /************** from here down pure gnome/gtk/gpsd ********************/ | ||
176 | |||
177 | /* try to connect to gpsd */ | ||
178 | /* Create a socket to interact with GPSD. */ | ||
179 | |||
180 | harbaum | 156 | printf("GPSD: trying to connect to %s %d\n", GPSD_HOST, GPSD_PORT); |
181 | |||
182 | harbaum | 1 | int retries = 5; |
183 | while(retries && | ||
184 | (GNOME_VFS_OK != (vfs_result = gnome_vfs_inet_connection_create( | ||
185 | &gps_state->iconn, GPSD_HOST, GPSD_PORT, NULL)))) { | ||
186 | printf("Error creating connection to GPSD, retrying ...\n"); | ||
187 | |||
188 | retries--; | ||
189 | sleep(1); | ||
190 | } | ||
191 | |||
192 | if(!retries) { | ||
193 | printf("Finally failed ...\n"); | ||
194 | return -1; | ||
195 | } | ||
196 | |||
197 | retries = 5; | ||
198 | while(retries && ((gps_state->socket = | ||
199 | gnome_vfs_inet_connection_to_socket(gps_state->iconn)) == NULL)) { | ||
200 | printf("Error creating connecting GPSD socket, retrying ...\n"); | ||
201 | |||
202 | retries--; | ||
203 | sleep(1); | ||
204 | } | ||
205 | |||
206 | if(!retries) { | ||
207 | printf("Finally failed ...\n"); | ||
208 | gnome_vfs_inet_connection_destroy(gps_state->iconn, NULL); | ||
209 | return -1; | ||
210 | } | ||
211 | |||
212 | GTimeVal timeout = { 10, 0 }; | ||
213 | if(GNOME_VFS_OK != (vfs_result = gnome_vfs_socket_set_timeout( | ||
214 | gps_state->socket, &timeout, NULL))) { | ||
215 | printf("Error setting GPSD timeout\n"); | ||
216 | gnome_vfs_inet_connection_destroy(gps_state->iconn, NULL); | ||
217 | return -1; | ||
218 | } | ||
219 | |||
220 | printf("GPSD connected ...\n"); | ||
221 | |||
222 | return 0; | ||
223 | } | ||
224 | |||
225 | void gps_clear_fix(struct gps_fix_t *fixp) { | ||
226 | fixp->mode = MODE_NOT_SEEN; | ||
227 | fixp->pos.lat = fixp->pos.lon = NAN; | ||
228 | harbaum | 156 | fixp->alt = NAN; |
229 | harbaum | 1 | fixp->eph = NAN; |
230 | } | ||
231 | |||
232 | /* unpack a daemon response into a status structure */ | ||
233 | static void gps_unpack(char *buf, struct gps_data_t *gpsdata) { | ||
234 | char *ns, *sp, *tp; | ||
235 | |||
236 | for(ns = buf; ns; ns = strstr(ns+1, "GPSD")) { | ||
237 | if(strncmp(ns, "GPSD", 4) == 0) { | ||
238 | /* the following should execute each time we have a good next sp */ | ||
239 | for (sp = ns + 5; *sp != '\0'; sp = tp+1) { | ||
240 | tp = sp + strcspn(sp, ",\r\n"); | ||
241 | if (*tp == '\0') tp--; | ||
242 | else *tp = '\0'; | ||
243 | |||
244 | switch (*sp) { | ||
245 | case 'O': | ||
246 | if (sp[2] == '?') { | ||
247 | gpsdata->set = | ||
248 | (gpsdata->set & SATELLITE_SET) | // fix for below | ||
249 | MODE_SET | STATUS_SET; // this clears sat info?? | ||
250 | gpsdata->status = STATUS_NO_FIX; | ||
251 | gps_clear_fix(&gpsdata->fix); | ||
252 | } else { | ||
253 | struct gps_fix_t nf; | ||
254 | char tag[MAXTAGLEN+1], alt[20], eph[20], lat[20], lon[20], mode[2]; | ||
255 | int st = sscanf(sp+2, | ||
256 | "%8s %*s %*s %19s %19s " | ||
257 | "%19s %19s %*s %*s %*s %*s " | ||
258 | "%*s %*s %*s %1s", | ||
259 | tag, lat, lon, | ||
260 | alt, eph, | ||
261 | mode); | ||
262 | if (st >= 5) { | ||
263 | #define DEFAULT(val) (val[0] == '?') ? NAN : g_ascii_strtod(val, NULL) | ||
264 | nf.pos.lat = DEFAULT(lat); | ||
265 | nf.pos.lon = DEFAULT(lon); | ||
266 | nf.eph = DEFAULT(eph); | ||
267 | harbaum | 156 | nf.alt = DEFAULT(alt); |
268 | harbaum | 1 | #undef DEFAULT |
269 | if (st >= 6) | ||
270 | nf.mode = (mode[0] == '?') ? MODE_NOT_SEEN : atoi(mode); | ||
271 | else | ||
272 | nf.mode = (alt[0] == '?') ? MODE_2D : MODE_3D; | ||
273 | gpsdata->fix = nf; | ||
274 | gpsdata->set |= LATLON_SET|MODE_SET; | ||
275 | gpsdata->status = STATUS_FIX; | ||
276 | gpsdata->set |= STATUS_SET; | ||
277 | harbaum | 156 | |
278 | if(alt[0] != '?') | ||
279 | gpsdata->set |= ALTITUDE_SET; | ||
280 | harbaum | 1 | } |
281 | } | ||
282 | break; | ||
283 | } | ||
284 | } | ||
285 | } | ||
286 | } | ||
287 | } | ||
288 | |||
289 | harbaum | 144 | void gps_enable(appdata_t *appdata, gboolean enable) { |
290 | appdata->gps_enabled = enable; | ||
291 | } | ||
292 | |||
293 | harbaum | 1 | gpointer gps_thread(gpointer data) { |
294 | GnomeVFSFileSize bytes_read; | ||
295 | GnomeVFSResult vfs_result; | ||
296 | char str[512]; | ||
297 | appdata_t *appdata = (appdata_t*)data; | ||
298 | |||
299 | const char *msg = "o\r\n"; /* pos request */ | ||
300 | |||
301 | appdata->gps_state->gpsdata.set = 0; | ||
302 | |||
303 | gboolean connected = FALSE; | ||
304 | |||
305 | while(1) { | ||
306 | if(appdata->gps_enabled) { | ||
307 | if(!connected) { | ||
308 | printf("trying to connect\n"); | ||
309 | |||
310 | if(gps_connect(appdata->gps_state) < 0) | ||
311 | sleep(10); | ||
312 | else | ||
313 | connected = TRUE; | ||
314 | } else { | ||
315 | if(GNOME_VFS_OK == | ||
316 | (vfs_result = gnome_vfs_socket_write(appdata->gps_state->socket, | ||
317 | msg, strlen(msg)+1, &bytes_read, NULL))) { | ||
318 | |||
319 | /* update every second, wait here to make sure a complete */ | ||
320 | /* reply is received */ | ||
321 | sleep(1); | ||
322 | |||
323 | if(bytes_read == (strlen(msg)+1)) { | ||
324 | vfs_result = gnome_vfs_socket_read(appdata->gps_state->socket, | ||
325 | str, sizeof(str)-1, &bytes_read, NULL); | ||
326 | if(vfs_result == GNOME_VFS_OK) { | ||
327 | str[bytes_read] = 0; | ||
328 | |||
329 | printf("msg: %s (%d)\n", str, strlen(str)); | ||
330 | |||
331 | g_mutex_lock(appdata->gps_state->mutex); | ||
332 | |||
333 | appdata->gps_state->gpsdata.set &= | ||
334 | ~(LATLON_SET|MODE_SET|STATUS_SET); | ||
335 | |||
336 | gps_unpack(str, &appdata->gps_state->gpsdata); | ||
337 | g_mutex_unlock(appdata->gps_state->mutex); | ||
338 | } | ||
339 | } | ||
340 | } | ||
341 | } | ||
342 | } else { | ||
343 | if(connected) { | ||
344 | printf("stopping GPS connection due to user request\n"); | ||
345 | gnome_vfs_inet_connection_destroy(appdata->gps_state->iconn, NULL); | ||
346 | |||
347 | harbaum | 112 | #ifdef ENABLE_GPSBT |
348 | harbaum | 1 | gpsbt_stop(&appdata->gps_state->context); |
349 | #endif | ||
350 | connected = FALSE; | ||
351 | } else | ||
352 | sleep(1); | ||
353 | } | ||
354 | } | ||
355 | |||
356 | printf("GPS thread ended???\n"); | ||
357 | return NULL; | ||
358 | } | ||
359 | |||
360 | void gps_init(appdata_t *appdata) { | ||
361 | appdata->gps_state = g_new0(gps_state_t, 1); | ||
362 | |||
363 | harbaum | 118 | printf("GPS init: Using gpsd\n"); |
364 | |||
365 | harbaum | 1 | /* start a new thread to listen to gpsd */ |
366 | appdata->gps_state->mutex = g_mutex_new(); | ||
367 | appdata->gps_state->thread_p = | ||
368 | g_thread_create(gps_thread, appdata, FALSE, NULL); | ||
369 | } | ||
370 | |||
371 | void gps_release(appdata_t *appdata) { | ||
372 | harbaum | 112 | #ifdef ENABLE_GPSBT |
373 | harbaum | 1 | gpsbt_stop(&appdata->gps_state->context); |
374 | #endif | ||
375 | g_free(appdata->gps_state); | ||
376 | harbaum | 118 | appdata->gps_state = NULL; |
377 | harbaum | 1 | } |
378 | harbaum | 118 | |
379 | #endif // ENABLE_LIBLOCATION |