/[zanavi_public1]/navit/navit/vehicle.c
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Revision 2 - (show annotations) (download)
Fri Oct 28 21:19:04 2011 UTC (11 years, 3 months ago) by zoff99
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1 /**
2 * Navit, a modular navigation system.
3 * Copyright (C) 2005-2009 Navit Team
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * version 2 as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #include <stdio.h>
21 #include <string.h>
22 #include <glib.h>
23 #include <time.h>
24 #include "config.h"
25 #include "debug.h"
26 #include "coord.h"
27 #include "item.h"
28 #include "log.h"
29 #include "plugin.h"
30 #include "transform.h"
31 #include "util.h"
32 #include "event.h"
33 #include "coord.h"
34 #include "transform.h"
35 #include "projection.h"
36 #include "point.h"
37 #include "graphics.h"
38 #include "callback.h"
39 #include "color.h"
40 #include "layout.h"
41 #include "vehicle.h"
42
43 struct vehicle {
44 struct vehicle_methods meth;
45 struct vehicle_priv *priv;
46 struct callback_list *cbl;
47 struct log *nmea_log, *gpx_log;
48 char *gpx_desc;
49 struct attr **attrs;
50
51 // cursor
52 struct cursor *cursor;
53 int cursor_fixed;
54 struct callback *animate_callback;
55 struct event_timeout *animate_timer;
56 struct point cursor_pnt;
57 struct graphics *gra;
58 struct graphics_gc *bg;
59 struct transformation *trans;
60 int angle;
61 int speed;
62 int sequence;
63 GHashTable *log_to_cb;
64 };
65
66 static void vehicle_draw_do(struct vehicle *this_, int lazy);
67 static void vehicle_log_nmea(struct vehicle *this_, struct log *log);
68 static void vehicle_log_gpx(struct vehicle *this_, struct log *log);
69 static void vehicle_log_textfile(struct vehicle *this_, struct log *log);
70 static void vehicle_log_binfile(struct vehicle *this_, struct log *log);
71 static int vehicle_add_log(struct vehicle *this_, struct log *log);
72
73
74
75 /**
76 * Creates a new vehicle
77 */
78 struct vehicle *
79 vehicle_new(struct attr *parent, struct attr **attrs)
80 {
81 struct vehicle *this_;
82 struct attr *source;
83 struct vehicle_priv *(*vehicletype_new) (struct vehicle_methods *
84 meth,
85 struct callback_list *
86 cbl,
87 struct attr ** attrs);
88 char *type, *colon;
89 struct pcoord center;
90
91 dbg(0, "enter\n");
92 source = attr_search(attrs, NULL, attr_source);
93 if (!source) {
94 dbg(0, "no source\n");
95 return NULL;
96 }
97
98 type = g_strdup(source->u.str);
99 colon = strchr(type, ':');
100 if (colon)
101 *colon = '\0';
102 dbg(1, "source='%s' type='%s'\n", source->u.str, type);
103
104 vehicletype_new = plugin_get_vehicle_type(type);
105 if (!vehicletype_new) {
106 dbg(0, "invalid type '%s'\n", type);
107 g_free(type);
108 return NULL;
109 }
110 g_free(type);
111 this_ = g_new0(struct vehicle, 1);
112 this_->cbl = callback_list_new();
113 this_->priv = vehicletype_new(&this_->meth, this_->cbl, attrs);
114 if (!this_->priv) {
115 dbg(0, "vehicletype_new failed\n");
116 callback_list_destroy(this_->cbl);
117 g_free(this_);
118 return NULL;
119 }
120 this_->attrs=attr_list_dup(attrs);
121
122 this_->trans=transform_new();
123
124 // set bad 0/0 location ??? i dont know really
125 /*
126 struct coord_geo g;
127 struct coord co;
128 enum projection pro=projection_mg;
129 g.lat=53.13;
130 g.lng=11.70;
131 transform_from_geo(pro, &g, &co);
132 center.x=co.x;
133 center.y=co.y;
134 center.pro = pro;
135 */
136
137 center.pro=projection_screen;
138 center.x=0;
139 center.y=0;
140 transform_setup(this_->trans, &center, 16, 0);
141
142 dbg(0, "leave\n");
143 this_->log_to_cb=g_hash_table_new(NULL,NULL);
144 return this_;
145 }
146
147 /**
148 * Destroys a vehicle
149 *
150 * @param this_ The vehicle to destroy
151 */
152 void
153 vehicle_destroy(struct vehicle *this_)
154 {
155 if (this_->animate_callback) {
156 callback_destroy(this_->animate_callback);
157 event_remove_timeout(this_->animate_timer);
158 }
159 transform_destroy(this_->trans);
160 this_->meth.destroy(this_->priv);
161 callback_list_destroy(this_->cbl);
162 attr_list_free(this_->attrs);
163 if (this_->bg)
164 graphics_gc_destroy(this_->bg);
165 if (this_->gra)
166 graphics_free(this_->gra);
167 g_free(this_);
168 }
169
170 /**
171 * Creates an attribute iterator to be used with vehicles
172 */
173 struct attr_iter *
174 vehicle_attr_iter_new(void)
175 {
176 return (struct attr_iter *)g_new0(void *,1);
177 }
178
179 /**
180 * Destroys a vehicle attribute iterator
181 *
182 * @param iter a vehicle attr_iter
183 */
184 void
185 vehicle_attr_iter_destroy(struct attr_iter *iter)
186 {
187 g_free(iter);
188 }
189
190
191
192 /**
193 * Generic get function
194 *
195 * @param this_ Pointer to a vehicle structure
196 * @param type The attribute type to look for
197 * @param attr Pointer to an attr structure to store the attribute
198 * @param iter A vehicle attr_iter
199 */
200 int
201 vehicle_get_attr(struct vehicle *this_, enum attr_type type, struct attr *attr, struct attr_iter *iter)
202 {
203 int ret;
204 if (this_->meth.position_attr_get) {
205 ret=this_->meth.position_attr_get(this_->priv, type, attr);
206 if (ret)
207 return ret;
208 }
209 if (type == attr_log_gpx_desc) {
210 attr->u.str = this_->gpx_desc;
211 return 1;
212 }
213 return attr_generic_get_attr(this_->attrs, NULL, type, attr, iter);
214 }
215
216 /**
217 * Generic set function
218 *
219 * @param this_ Pointer to a vehicle structure
220 * @param attr Pointer to an attr structure for the attribute to be set
221 * @return nonzero on success, zero on failure
222 */
223 int
224 vehicle_set_attr(struct vehicle *this_, struct attr *attr)
225 {
226 int ret=1;
227 if (this_->meth.set_attr)
228 ret=this_->meth.set_attr(this_->priv, attr);
229 if (ret == 1 && attr->type == attr_log_gpx_desc) {
230 g_free(this_->gpx_desc);
231 this_->gpx_desc = attr->u.str;
232 }
233 if (ret == 1 && attr->type != attr_navit && attr->type != attr_pdl_gps_update)
234 this_->attrs=attr_generic_set_attr(this_->attrs, attr);
235 return ret != 0;
236 }
237
238 /**
239 * Generic add function
240 *
241 * @param this_ A vehicle
242 * @param attr A struct attr
243 */
244 int
245 vehicle_add_attr(struct vehicle *this_, struct attr *attr)
246 {
247 int ret=1;
248 switch (attr->type) {
249 case attr_callback:
250 callback_list_add(this_->cbl, attr->u.callback);
251 break;
252 case attr_log:
253 ret=vehicle_add_log(this_, attr->u.log);
254 break;
255 // currently supporting oldstyle cursor config.
256 case attr_cursor:
257 this_->cursor_fixed=1;
258 vehicle_set_cursor(this_, attr->u.cursor, 1);
259 break;
260 default:
261 break;
262 }
263 if (ret)
264 this_->attrs=attr_generic_add_attr(this_->attrs, attr);
265 return ret;
266 }
267
268 /**
269 * @brief Generic remove function.
270 *
271 * Used to remove a callback from the vehicle.
272 * @param this_ A vehicle
273 * @param attr
274 */
275 int
276 vehicle_remove_attr(struct vehicle *this_, struct attr *attr)
277 {
278 struct callback *cb;
279 switch (attr->type) {
280 case attr_callback:
281 callback_list_remove(this_->cbl, attr->u.callback);
282 break;
283 case attr_log:
284 cb=g_hash_table_lookup(this_->log_to_cb, attr->u.log);
285 if (!cb)
286 return 0;
287 g_hash_table_remove(this_->log_to_cb, attr->u.log);
288 callback_list_remove(this_->cbl, cb);
289 break;
290 default:
291 this_->attrs=attr_generic_remove_attr(this_->attrs, attr);
292 return 0;
293 }
294 return 1;
295 }
296
297
298
299 /**
300 * Sets the cursor of a vehicle.
301 *
302 * @param this_ A vehicle
303 * @param cursor A cursor
304 * @author Ralph Sennhauser (10/2009)
305 */
306 void
307 vehicle_set_cursor(struct vehicle *this_, struct cursor *cursor, int overwrite)
308 {
309 struct point sc;
310 if (this_->cursor_fixed && !overwrite)
311 return;
312 if (this_->animate_callback) {
313 event_remove_timeout(this_->animate_timer);
314 this_->animate_timer=NULL; // dangling pointer! prevent double freeing.
315 callback_destroy(this_->animate_callback);
316 this_->animate_callback=NULL; // dangling pointer! prevent double freeing.
317 }
318 if (cursor && cursor->interval) {
319 this_->animate_callback=callback_new_2(callback_cast(vehicle_draw_do), this_, 0);
320 this_->animate_timer=event_add_timeout(cursor->interval, 1, this_->animate_callback);
321 }
322
323 if (cursor && this_->gra && this_->cursor) {
324 this_->cursor_pnt.x+=(this_->cursor->w - cursor->w)/2;
325 this_->cursor_pnt.y+=(this_->cursor->h - cursor->h)/2;
326 graphics_overlay_resize(this_->gra, &this_->cursor_pnt, cursor->w, cursor->h, 65535, 0);
327 }
328
329 if (cursor) {
330 sc.x=cursor->w/2;
331 sc.y=cursor->h/2;
332 if (!this_->cursor && this_->gra)
333 graphics_overlay_disable(this_->gra, 0);
334 } else {
335 sc.x=sc.y=0;
336 if (this_->cursor && this_->gra)
337 graphics_overlay_disable(this_->gra, 1);
338 }
339 transform_set_screen_center(this_->trans, &sc);
340
341 this_->cursor=cursor;
342 }
343
344 /**
345 * Draws a vehicle on top of a graphics.
346 *
347 * @param this_ The vehicle
348 * @param gra The graphics
349 * @param pnt Screen coordinates of the vehicle.
350 * @param lazy use lazy draw mode.
351 * @param angle The angle relative to the map.
352 * @param speed The speed of the vehicle.
353 */
354 void
355 vehicle_draw(struct vehicle *this_, struct graphics *gra, struct point *pnt, int lazy, int angle, int speed)
356 {
357 if (angle < 0)
358 angle+=360;
359 dbg(1,"enter this=%p gra=%p pnt=%p lazy=%d dir=%d speed=%d\n", this_, gra, pnt, lazy, angle, speed);
360 dbg(1,"point %d,%d\n", pnt->x, pnt->y);
361 this_->cursor_pnt=*pnt;
362 this_->angle=angle;
363 this_->speed=speed;
364 if (!this_->cursor)
365 return;
366 this_->cursor_pnt.x-=this_->cursor->w/2;
367 this_->cursor_pnt.y-=this_->cursor->h/2;
368 if (!this_->gra) {
369 struct color c;
370 this_->gra=graphics_overlay_new(gra, &this_->cursor_pnt, this_->cursor->w, this_->cursor->h, 65535, 0);
371 if (this_->gra) {
372 this_->bg=graphics_gc_new(this_->gra);
373 c.r=0; c.g=0; c.b=0; c.a=0;
374 graphics_gc_set_foreground(this_->bg, &c);
375 graphics_background_gc(this_->gra, this_->bg);
376 }
377 }
378 vehicle_draw_do(this_, lazy);
379 }
380
381 int
382 vehicle_get_cursor_data(struct vehicle *this, struct point *pnt, int *angle, int *speed)
383 {
384 *pnt=this->cursor_pnt;
385 *angle=this->angle;
386 *speed=this->speed;
387 return 1;
388 }
389
390
391 static void
392 vehicle_draw_do(struct vehicle *this_, int lazy)
393 {
394 struct point p;
395 struct cursor *cursor=this_->cursor;
396 int speed=this_->speed;
397 int angle=this_->angle;
398 int sequence=this_->sequence;
399 struct attr **attr;
400 char *label=NULL;
401 int match=0;
402
403 if (!this_->cursor || !this_->cursor->attrs || !this_->gra)
404 return;
405
406 attr=this_->attrs;
407 while (attr && *attr) {
408 if ((*attr)->type == attr_name)
409 label=(*attr)->u.str;
410 attr++;
411 }
412 transform_set_yaw(this_->trans, -this_->angle);
413 graphics_draw_mode(this_->gra, draw_mode_begin);
414 p.x=0;
415 p.y=0;
416 graphics_draw_rectangle(this_->gra, this_->bg, &p, cursor->w, cursor->h);
417 attr=cursor->attrs;
418 while (*attr) {
419 if ((*attr)->type == attr_itemgra) {
420 struct itemgra *itm=(*attr)->u.itemgra;
421 dbg(1,"speed %d-%d %d\n", itm->speed_range.min, itm->speed_range.max, speed);
422 if (speed >= itm->speed_range.min && speed <= itm->speed_range.max &&
423 angle >= itm->angle_range.min && angle <= itm->angle_range.max &&
424 sequence >= itm->sequence_range.min && sequence <= itm->sequence_range.max) {
425 graphics_draw_itemgra(this_->gra, itm, this_->trans, label);
426 }
427 if (sequence < itm->sequence_range.max)
428 match=1;
429 }
430 ++attr;
431 }
432 graphics_draw_drag(this_->gra, &this_->cursor_pnt);
433 graphics_draw_mode(this_->gra, lazy ? draw_mode_end_lazy : draw_mode_end);
434 if (this_->animate_callback) {
435 ++this_->sequence;
436 if (cursor->sequence_range && cursor->sequence_range->max < this_->sequence)
437 this_->sequence=cursor->sequence_range->min;
438 if (! match && ! cursor->sequence_range)
439 this_->sequence=0;
440 }
441 }
442
443 /**
444 * Writes to an NMEA log.
445 *
446 * @param this_ Pointer to the vehicle structure of the data source
447 * @param log Pointer to a log structure for the log file
448 */
449 static void
450 vehicle_log_nmea(struct vehicle *this_, struct log *log)
451 {
452 struct attr pos_attr;
453 if (!this_->meth.position_attr_get)
454 return;
455 if (!this_->meth.position_attr_get(this_->priv, attr_position_nmea, &pos_attr))
456 return;
457 log_write(log, pos_attr.u.str, strlen(pos_attr.u.str), 0);
458 }
459
460 void
461 vehicle_log_gpx_add_tag(char *tag, char **logstr)
462 {
463 char *ext_start="\t<extensions>\n";
464 char *ext_end="\t</extensions>\n";
465 char *trkpt_end="</trkpt>";
466 char *start=NULL,*end=NULL;
467 if (!*logstr) {
468 start=g_strdup(ext_start);
469 end=g_strdup(ext_end);
470 } else {
471 char *str=strstr(*logstr, ext_start);
472 int len;
473 if (str) {
474 len=str-*logstr+strlen(ext_start);
475 start=g_strdup(*logstr);
476 start[len]='\0';
477 end=g_strdup(str+strlen(ext_start));
478 } else {
479 str=strstr(*logstr, trkpt_end);
480 len=str-*logstr;
481 end=g_strdup_printf("%s%s",ext_end,str);
482 str=g_strdup(*logstr);
483 str[len]='\0';
484 start=g_strdup_printf("%s%s",str,ext_start);
485 g_free(str);
486 }
487 }
488 *logstr=g_strdup_printf("%s%s%s",start,tag,end);
489 g_free(start);
490 g_free(end);
491 }
492
493 /**
494 * Writes to a GPX log.
495 *
496 * @param this_ Pointer to the vehicle structure of the data source
497 * @param log Pointer to a log structure for the log file
498 */
499 static void
500 vehicle_log_gpx(struct vehicle *this_, struct log *log)
501 {
502 struct attr attr,*attrp, fix_attr;
503 enum attr_type *attr_types;
504 char *logstr;
505 char *extensions="\t<extensions>\n";
506
507 if (!this_->meth.position_attr_get)
508 return;
509 if (log_get_attr(log, attr_attr_types, &attr, NULL))
510 attr_types=attr.u.attr_types;
511 else
512 attr_types=NULL;
513 if (this_->meth.position_attr_get(this_->priv, attr_position_fix_type, &fix_attr)) {
514 if ( fix_attr.u.num == 0 )
515 return;
516 }
517 if (!this_->meth.position_attr_get(this_->priv, attr_position_coord_geo, &attr))
518 return;
519 logstr=g_strdup_printf("<trkpt lat=\"%f\" lon=\"%f\">\n",attr.u.coord_geo->lat,attr.u.coord_geo->lng);
520 if (attr_types && attr_types_contains_default(attr_types, attr_position_time_iso8601, 0)) {
521 if (this_->meth.position_attr_get(this_->priv, attr_position_time_iso8601, &attr)) {
522 logstr=g_strconcat_printf(logstr,"\t<time>%s</time>\n",attr.u.str);
523 } else {
524 char *timep = current_to_iso8601();
525 logstr=g_strconcat_printf(logstr,"\t<time>%s</time>\n",timep);
526 g_free(timep);
527 }
528 }
529 if (this_->gpx_desc) {
530 logstr=g_strconcat_printf(logstr,"\t<desc>%s</desc>\n",this_->gpx_desc);
531 g_free(this_->gpx_desc);
532 this_->gpx_desc = NULL;
533 }
534 if (attr_types_contains_default(attr_types, attr_position_height,0) && this_->meth.position_attr_get(this_->priv, attr_position_height, &attr))
535 logstr=g_strconcat_printf(logstr,"\t<ele>%.6f</ele>\n",*attr.u.numd);
536 // <magvar> magnetic variation in degrees; we might use position_magnetic_direction and position_direction to figure it out
537 // <geoidheight> Height (in meters) of geoid (mean sea level) above WGS84 earth ellipsoid. As defined in NMEA GGA message (field 11, which vehicle_wince.c ignores)
538 // <name> GPS name (arbitrary)
539 // <cmt> comment
540 // <src> Source of data
541 // <link> Link to additional information (URL)
542 // <sym> Text of GPS symbol name
543 // <type> Type (classification)
544 // <fix> Type of GPS fix {'none'|'2d'|'3d'|'dgps'|'pps'}, leave out if unknown. Similar to position_fix_type but more detailed.
545 if (attr_types_contains_default(attr_types, attr_position_sats_used,0) && this_->meth.position_attr_get(this_->priv, attr_position_sats_used, &attr))
546 logstr=g_strconcat_printf(logstr,"\t<sat>%d</sat>\n",attr.u.num);
547 if (attr_types_contains_default(attr_types, attr_position_hdop,0) && this_->meth.position_attr_get(this_->priv, attr_position_hdop, &attr))
548 logstr=g_strconcat_printf(logstr,"\t<hdop>%.6f</hdop>\n",*attr.u.numd);
549 // <vdop>, <pdop> Vertical and position dilution of precision, no corresponding attribute
550 if (attr_types_contains_default(attr_types, attr_position_direction,0) && this_->meth.position_attr_get(this_->priv, attr_position_direction, &attr))
551 logstr=g_strconcat_printf(logstr,"\t<course>%.1f</course>\n",*attr.u.numd);
552 if (attr_types_contains_default(attr_types, attr_position_speed, 0) && this_->meth.position_attr_get(this_->priv, attr_position_speed, &attr))
553 logstr=g_strconcat_printf(logstr,"\t<speed>%.2f</speed>\n",(*attr.u.numd / 3.6));
554 if (attr_types_contains_default(attr_types, attr_profilename, 0) && (attrp=attr_search(this_->attrs, NULL, attr_profilename))) {
555 logstr=g_strconcat_printf(logstr,"%s\t\t<navit:profilename>%s</navit:profilename>\n",extensions,attrp->u.str);
556 extensions="";
557 }
558 if (attr_types_contains_default(attr_types, attr_position_radius, 0) && this_->meth.position_attr_get(this_->priv, attr_position_radius, &attr)) {
559 logstr=g_strconcat_printf(logstr,"%s\t\t<navit:radius>%.2f</navit:radius>\n",extensions,*attr.u.numd);
560 extensions="";
561 }
562 if (!strcmp(extensions,"")) {
563 logstr=g_strconcat_printf(logstr,"\t</extensions>\n");
564 }
565 logstr=g_strconcat_printf(logstr,"</trkpt>\n");
566 callback_list_call_attr_1(this_->cbl, attr_log_gpx, &logstr);
567 log_write(log, logstr, strlen(logstr), 0);
568 g_free(logstr);
569 }
570
571 /**
572 * Writes to a text log.
573 *
574 * @param this_ Pointer to the vehicle structure of the data source
575 * @param log Pointer to a log structure for the log file
576 */
577 static void
578 vehicle_log_textfile(struct vehicle *this_, struct log *log)
579 {
580 struct attr pos_attr,fix_attr;
581 char *logstr;
582 if (!this_->meth.position_attr_get)
583 return;
584 if (this_->meth.position_attr_get(this_->priv, attr_position_fix_type, &fix_attr)) {
585 if (fix_attr.u.num == 0)
586 return;
587 }
588 if (!this_->meth.position_attr_get(this_->priv, attr_position_coord_geo, &pos_attr))
589 return;
590 logstr=g_strdup_printf("%f %f type=trackpoint\n", pos_attr.u.coord_geo->lng, pos_attr.u.coord_geo->lat);
591 callback_list_call_attr_1(this_->cbl, attr_log_textfile, &logstr);
592 log_write(log, logstr, strlen(logstr), 0);
593 }
594
595 /**
596 * Writes to a binary log.
597 *
598 * @param this_ Pointer to the vehicle structure of the data source
599 * @param log Pointer to a log structure for the log file
600 */
601 static void
602 vehicle_log_binfile(struct vehicle *this_, struct log *log)
603 {
604 struct attr pos_attr, fix_attr;
605 int *buffer;
606 int *buffer_new;
607 int len,limit=1024,done=0,radius=25;
608 struct coord c;
609 enum log_flags flags;
610
611 if (!this_->meth.position_attr_get)
612 return;
613 if (this_->meth.position_attr_get(this_->priv, attr_position_fix_type, &fix_attr)) {
614 if (fix_attr.u.num == 0)
615 return;
616 }
617 if (!this_->meth.position_attr_get(this_->priv, attr_position_coord_geo, &pos_attr))
618 return;
619 transform_from_geo(projection_mg, pos_attr.u.coord_geo, &c);
620 if (!c.x || !c.y)
621 return;
622 while (!done) {
623 buffer=log_get_buffer(log, &len);
624 if (! buffer || !len) {
625 buffer_new=g_malloc(5*sizeof(int));
626 buffer_new[0]=2;
627 buffer_new[1]=type_track;
628 buffer_new[2]=0;
629 } else {
630 buffer_new=g_malloc((buffer[0]+3)*sizeof(int));
631 memcpy(buffer_new, buffer, (buffer[0]+1)*sizeof(int));
632 }
633 dbg(1,"c=0x%x,0x%x\n",c.x,c.y);
634 buffer_new[buffer_new[0]+1]=c.x;
635 buffer_new[buffer_new[0]+2]=c.y;
636 buffer_new[0]+=2;
637 buffer_new[2]+=2;
638 if (buffer_new[2] > limit) {
639 int count=buffer_new[2]/2;
640 struct coord *out=g_alloca(sizeof(struct coord)*(count));
641 struct coord *in=(struct coord *)(buffer_new+3);
642 int count_out=transform_douglas_peucker(in, count, radius, out);
643 memcpy(in, out, count_out*2*sizeof(int));
644 buffer_new[0]+=(count_out-count)*2;
645 buffer_new[2]+=(count_out-count)*2;
646 flags=log_flag_replace_buffer|log_flag_force_flush|log_flag_truncate;
647 } else {
648 flags=log_flag_replace_buffer|log_flag_keep_pointer|log_flag_keep_buffer|log_flag_force_flush;
649 done=1;
650 }
651 log_write(log, (char *)buffer_new, (buffer_new[0]+1)*sizeof(int), flags);
652 }
653 }
654
655 /**
656 * Register a new log to receive data.
657 *
658 * @param this_ Pointer to the vehicle structure of the data source
659 * @param log Pointer to a log structure for the log file
660 */
661 static int
662 vehicle_add_log(struct vehicle *this_, struct log *log)
663 {
664 struct callback *cb;
665 struct attr type_attr;
666 if (!log_get_attr(log, attr_type, &type_attr, NULL))
667 return 1;
668
669 if (!strcmp(type_attr.u.str, "nmea")) {
670 cb=callback_new_attr_2(callback_cast(vehicle_log_nmea), attr_position_coord_geo, this_, log);
671 } else if (!strcmp(type_attr.u.str, "gpx")) {
672 char *header = "<?xml version='1.0' encoding='UTF-8'?>\n"
673 "<gpx version='1.1' creator='Navit http://navit.sourceforge.net'\n"
674 " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'\n"
675 " xmlns:navit='http://www.navit-project.org/schema/navit'\n"
676 " xmlns='http://www.topografix.com/GPX/1/1'\n"
677 " xsi:schemaLocation='http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd'>\n"
678 "<trk>\n"
679 "<trkseg>\n";
680 char *trailer = "</trkseg>\n</trk>\n</gpx>\n";
681 log_set_header(log, header, strlen(header));
682 log_set_trailer(log, trailer, strlen(trailer));
683 cb=callback_new_attr_2(callback_cast(vehicle_log_gpx), attr_position_coord_geo, this_, log);
684 } else if (!strcmp(type_attr.u.str, "textfile")) {
685 char *header = "type=track\n";
686 log_set_header(log, header, strlen(header));
687 cb=callback_new_attr_2(callback_cast(vehicle_log_textfile), attr_position_coord_geo, this_, log);
688 } else if (!strcmp(type_attr.u.str, "binfile")) {
689 cb=callback_new_attr_2(callback_cast(vehicle_log_binfile), attr_position_coord_geo, this_, log);
690 } else
691 return 1;
692 g_hash_table_insert(this_->log_to_cb, log, cb);
693 callback_list_add(this_->cbl, cb);
694 return 0;
695 }
696

   
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