2 * This file is part of mapper
4 * Copyright (C) 2007 Kaj-Michael Lang
5 * Copyright (C) 2006-2007 John Costigan.
7 * POI and GPS-Info code originally written by Cezary Jackiewicz.
9 * Default map data provided by http://www.openstreetmap.org/
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License along
22 * with this program; if not, write to the Free Software Foundation, Inc.,
23 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
37 #include <glib/gstdio.h>
39 #include <curl/multi.h>
43 #include "hildon-mapper.h"
53 #include "mapper-types.h"
54 #include "ui-common.h"
58 #include "map-download.h"
62 static guint _num_downloads=0;
63 static guint _curr_download=0;
65 static GQueue *curl_easy_queue=NULL;
66 static GTree *pui_tree=NULL;
67 static GTree *downloading_tree=NULL;
68 static GHashTable *pui_by_easy=NULL;
70 static gchar *map_construct_url(guint tilex, guint tiley, guint zoom);
73 get_next_pui(gpointer key, gpointer value, ProgressUpdateInfo ** data)
80 download_comparefunc(const ProgressUpdateInfo * a, const ProgressUpdateInfo * b, gpointer user_data)
82 gint diff = (a->priority - b->priority);
85 diff = (a->tilex - b->tilex);
88 diff = (a->tiley - b->tiley);
91 diff = (a->zoom - b->zoom);
94 diff = (a->repo - b->repo);
97 /* Otherwise, deletes are "greatest" (least priority). */
99 return (b->retries ? -1 : 0);
100 else if (!b->retries)
101 return (a->retries ? 1 : 0);
102 /* Do updates after non-updates (because they'll both be done anyway). */
103 return (a->retries - b->retries);
107 * Free a ProgressUpdateInfo data structure that was allocated during the
108 * auto-map-download process.
111 progress_update_info_free(ProgressUpdateInfo * pui)
113 g_free(pui->src_str);
114 g_free(pui->dest_str);
115 g_slice_free(ProgressUpdateInfo, pui);
119 map_download_timeout()
121 static guint destroy_counter = 50;
122 gint num_transfers = 0, num_msgs = 0;
123 gint deletes_left = 50; /* only do 50 deletes at a time. */
126 if (_curl_multi && CURLM_CALL_MULTI_PERFORM == curl_multi_perform(_curl_multi, &num_transfers))
127 return TRUE; /* Give UI a chance first. */
129 while (_curl_multi && (msg = curl_multi_info_read(_curl_multi, &num_msgs))) {
130 if (msg->msg == CURLMSG_DONE) {
131 if (msg->easy_handle == _autoroute_data.curl_easy) {
132 /* This is the autoroute download. */
133 /* Now, parse the autoroute and update the display. */
134 if (_autoroute_data.enabled && parse_gpx(&_route, _autoroute_data.rdl_data.bytes, _autoroute_data.rdl_data.bytes_read, 0)) {
135 /* Find the nearest route point, if we're connected. */
136 route_find_nearest_point();
139 cancel_autoroute(TRUE); /* We're done. Clean up. */
141 ProgressUpdateInfo *pui = g_hash_table_lookup(pui_by_easy, msg->easy_handle);
142 g_queue_push_head(curl_easy_queue, msg->easy_handle);
143 g_hash_table_remove(pui_by_easy, msg->easy_handle);
145 if (msg->data.result != CURLE_OK)
146 g_unlink(pui->dest_str); /* Delete so we try again. */
147 curl_multi_remove_handle(_curl_multi, msg->easy_handle);
148 g_idle_add_full(G_PRIORITY_HIGH_IDLE, (GSourceFunc)map_download_idle_refresh, pui, NULL);
153 /* Up to 1 transfer per tile. */
154 while (num_transfers < (4*4) && g_tree_nnodes(pui_tree)) {
155 ProgressUpdateInfo *pui;
156 g_tree_foreach(pui_tree, (GTraverseFunc)get_next_pui, &pui);
159 /* This is a download. */
161 g_tree_steal(pui_tree, pui);
162 g_tree_insert(downloading_tree, pui, pui);
164 pui->src_str=map_construct_url(pui->tilex, pui->tiley, pui->zoom);
167 /* Failed to generate URL. */
168 g_debug("Failed to generate tile download URL");
169 g_idle_add_full(G_PRIORITY_HIGH_IDLE,(GSourceFunc)map_download_idle_refresh, pui, NULL);
173 pui->dest_str=g_strdup_printf("%s/%u/%u/%u.jpg", pui->repo->cache_dir, pui->zoom, pui->tilex, pui->tiley);
175 /* Check to see if we need to overwrite. */
176 if (pui->retries > 0) {
177 /* We're not updating - check if file already exists. */
178 if (g_file_test(pui->dest_str, G_FILE_TEST_EXISTS)) {
179 g_idle_add_full(G_PRIORITY_HIGH_IDLE, (GSourceFunc)map_download_idle_refresh, pui, NULL);
184 /* Attempt to open the file for writing. */
185 if (!(f=g_fopen(pui->dest_str, "w")) && errno == ENOENT) {
186 /* Directory doesn't exist yet - create it, then we'll retry */
187 gchar buffer[BUFFER_SIZE];
188 g_snprintf(buffer, sizeof(buffer), "%s/%u/%u", pui->repo->cache_dir, pui->zoom, pui->tilex);
189 g_mkdir_with_parents(buffer, 0775);
190 f=g_fopen(pui->dest_str, "w");
196 curl_easy = g_queue_pop_tail(curl_easy_queue);
198 /* Need a new curl_easy. */
199 MACRO_CURL_EASY_INIT(curl_easy);
201 curl_easy_setopt(curl_easy, CURLOPT_URL, pui->src_str);
202 curl_easy_setopt(curl_easy, CURLOPT_WRITEDATA, f);
203 g_hash_table_insert(pui_by_easy, curl_easy, pui);
205 /* Initialize CURL. */
206 _curl_multi = curl_multi_init();
207 /*curl_multi_setopt(_curl_multi, CURLMOPT_PIPELINING, 1); */
209 curl_multi_add_handle(_curl_multi, curl_easy);
212 /* Unable to open tile file for writing. */
213 gchar buffer[BUFFER_SIZE];
214 g_snprintf(buffer, sizeof(buffer), "%s:\n%s", _("Failed to open file for writing"), pui->dest_str);
215 MACRO_BANNER_SHOW_INFO(_window, buffer);
216 g_idle_add_full(G_PRIORITY_HIGH_IDLE, (GSourceFunc)map_download_idle_refresh, pui, NULL);
219 } else if (--deletes_left) {
220 /* This is a delete. */
221 gchar buffer[BUFFER_SIZE];
222 g_tree_steal(pui_tree, pui);
223 g_tree_insert(downloading_tree, pui, pui);
225 g_snprintf(buffer, sizeof(buffer), "%s/%u/%u/%u.jpg", pui->repo->cache_dir, pui->zoom, pui->tilex, pui->tiley);
227 g_idle_add_full(G_PRIORITY_HIGH_IDLE,(GSourceFunc)map_download_idle_refresh, pui, NULL);
232 if (!(num_transfers || g_tree_nnodes(pui_tree))) {
233 /* Destroy curl after 50 counts (5 seconds). */
234 if (--destroy_counter) {
237 while ((curr = g_queue_pop_tail(curl_easy_queue)))
238 curl_easy_cleanup(curr);
240 curl_multi_cleanup(_curl_multi);
247 destroy_counter = 50;
253 * Given a wms uri pattern, compute the coordinate transformation and
255 * 'proj' is used for the conversion
258 map_convert_wms_to_wms(gint tilex, gint tiley, gint zoomlevel, gchar * uri)
261 gchar cmd[BUFFER_SIZE], srs[BUFFER_SIZE];
264 gdouble lon1, lat1, lon2, lat2;
266 gchar *widthstr = strcasestr(uri, "WIDTH=");
267 gchar *heightstr = strcasestr(uri, "HEIGHT=");
268 gchar *srsstr = strcasestr(uri, "SRS=EPSG");
269 gchar *srsstre = strchr(srsstr, '&');
271 /* missing: test if found */
273 strncpy(srs + 4, srsstr + 8, 256);
274 /* missing: test srsstre-srsstr < 526 */
275 srs[srsstre - srsstr - 4] = 0;
276 /* convert to lower, as WMC is EPSG and cs2cs is epsg */
278 gint dwidth = widthstr ? atoi(widthstr + 6) - TILE_SIZE_PIXELS : 0;
279 gint dheight = heightstr ? atoi(heightstr + 7) - TILE_SIZE_PIXELS : 0;
281 unit2latlon(tile2zunit(tilex, zoomlevel) - pixel2zunit(dwidth / 2, zoomlevel),
282 tile2zunit(tiley + 1, zoomlevel) + pixel2zunit((dheight + 1) / 2, zoomlevel), lat1, lon1);
284 unit2latlon(tile2zunit(tilex + 1, zoomlevel) + pixel2zunit((dwidth + 1) / 2, zoomlevel),
285 tile2zunit(tiley, zoomlevel) - pixel2zunit(dheight / 2, zoomlevel), lat2, lon2);
287 setlocale(LC_NUMERIC, "C");
289 g_snprintf(cmd, sizeof(cmd),
290 "(echo \"%.6f %.6f\"; echo \"%.6f %.6f\") | "
291 "/usr/bin/cs2cs +proj=longlat +datum=WGS84 +to +init=%s -f %%.6f "
292 " > /tmp/tmpcs2cs ", lon1, lat1, lon2, lat2, srs);
293 vprintf("Running command: %s\n", cmd);
294 system_retcode = system(cmd);
297 g_printerr("cs2cs returned error code %d\n", WEXITSTATUS(system_retcode));
298 else if (!(in = g_fopen("/tmp/tmpcs2cs", "r")))
299 g_printerr("Cannot open results of conversion\n");
300 else if (5 != fscanf(in, "%lf %lf %s %lf %lf", &lon1, &lat1, cmd, &lon2, &lat2)) {
301 g_printerr("Wrong conversion\n");
305 ret = g_strdup_printf(uri, lon1, lat1, lon2, lat2);
308 setlocale(LC_NUMERIC, "");
315 * Given the xyz coordinates of our map coordinate system, write the qrst
316 * quadtree coordinates to buffer.
319 map_convert_coords_to_quadtree_string(gint x, gint y, gint zoomlevel,
320 gchar * buffer, const gchar initial,
321 const gchar * const quadrant)
329 for (n = 16 - zoomlevel; n >= 0; n--) {
330 gint xbit = (x >> n) & 1;
331 gint ybit = (y >> n) & 1;
332 *ptr++ = quadrant[xbit + 2 * ybit];
338 * Construct the URL that we should fetch, based on the current URI format.
339 * This method works differently depending on if a "%s" string is present in
340 * the URI format, since that would indicate a quadtree-based map coordinate
344 map_construct_url(guint tilex, guint tiley, guint zoom)
346 switch (_curr_repo->type) {
348 return g_strdup_printf(_curr_repo->url, tilex, tiley, zoom);
350 case REPOTYPE_XYZ_INV:
351 return g_strdup_printf(_curr_repo->url, 17 - zoom, tilex, tiley);
353 case REPOTYPE_QUAD_QRST:
355 gchar location[MAX_ZOOM + 2];
356 map_convert_coords_to_quadtree_string(tilex, tiley, zoom, location, 't', "qrts");
357 return g_strdup_printf(_curr_repo->url, location);
360 case REPOTYPE_QUAD_ZERO:
362 /* This is a zero-based quadtree URI. */
363 gchar location[MAX_ZOOM + 2];
364 map_convert_coords_to_quadtree_string(tilex, tiley, zoom, location, '\0', "0123");
365 return g_strdup_printf(_curr_repo->url, location);
369 return map_convert_wms_to_wms(tilex, tiley, zoom, _curr_repo->url);
378 map_download_progress_clear(void)
380 g_assert(_progress_item);
381 gtk_progress_bar_set_fraction(_progress_item, 0.0);
382 gtk_progress_bar_set_text(_progress_item, "");
386 map_download_progress_set(gint currd, gint numd)
390 g_assert(_progress_item);
391 g_snprintf(buffer, sizeof(buffer), _("Downloading maps (%d/%d)"), currd, numd);
392 gtk_progress_bar_set_text(_progress_item, buffer);
393 gtk_progress_bar_set_fraction(_progress_item, currd/(double)numd);
397 map_download_idle_refresh(ProgressUpdateInfo * pui)
399 /* Test if download succeeded (only if retries != 0). */
400 if (!pui->retries || g_file_test(pui->dest_str, G_FILE_TEST_EXISTS)) {
401 gint zoom_diff = pui->zoom - _zoom;
402 /* Only refresh at same or "lower" (more detailed) zoom level. */
403 if (zoom_diff >= 0) {
404 /* If zoom has changed since we first put in the request for
405 * this tile, then we may have to update more than one tile. */
406 guint tilex, tiley, tilex_end, tiley_end;
407 for (tilex = pui->tilex << zoom_diff, tilex_end = tilex + (1 << zoom_diff); tilex < tilex_end; tilex++) {
408 for (tiley = pui->tiley << zoom_diff, tiley_end = tiley + (1 << zoom_diff); tiley < tiley_end; tiley++) {
409 if (map_render_tile(tilex, tiley, ((tilex - _base_tilex) << TILE_SIZE_P2), ((tiley - _base_tiley) << TILE_SIZE_P2), TRUE)==TRUE) {
411 gtk_widget_queue_draw_area(_map_widget,
412 ((tilex - _base_tilex) << TILE_SIZE_P2) - _offsetx,
413 ((tiley - _base_tiley) << TILE_SIZE_P2) - _offsety,
414 TILE_SIZE_PIXELS, TILE_SIZE_PIXELS);
420 /* Else the download failed. Update retries and maybe try again. */
422 if (pui->retries > 0)
424 else if (pui->retries < 0)
428 /* removal automatically calls progress_update_info_free(). */
429 g_tree_steal(downloading_tree, pui);
430 g_tree_insert(pui_tree, pui, pui);
431 if (iap_is_connected() && !_curl_sid)
432 _curl_sid = g_timeout_add(100,(GSourceFunc)map_download_timeout, NULL);
433 /* Don't do anything else. */
436 /* No more retries left - something must be wrong. */
437 MACRO_BANNER_SHOW_INFO(_window, _("Error in download. Check internet connection and/or Map Repository URL Format."));
441 /* removal automatically calls progress_update_info_free(). */
442 g_tree_remove(downloading_tree, pui);
444 if (++_curr_download == _num_downloads) {
445 _num_downloads = _curr_download = 0;
446 map_download_progress_clear();
448 map_download_progress_set(_curr_download, _num_downloads);
454 * Initiate a download of the given xyz coordinates using the given buffer
455 * as the URL. If the map already exists on disk, or if we are already
456 * downloading the map, then this method does nothing.
459 map_initiate_download(guint tilex, guint tiley, guint zoom, gint retries)
461 ProgressUpdateInfo *pui;
465 pui = g_slice_new(ProgressUpdateInfo);
469 pui->priority = (abs((gint) tilex - unit2tile(_center.unitx)) + abs((gint) tiley - unit2tile(_center.unity)));
471 pui->priority = -pui->priority; /* "Negative" makes them lowest pri. */
472 pui->retries = retries;
473 pui->repo = _curr_repo;
475 if (g_tree_lookup(pui_tree, pui) || g_tree_lookup(downloading_tree, pui)) {
476 /* Already downloading. */
477 g_slice_free(ProgressUpdateInfo, pui);
481 pui->dest_str = NULL;
484 g_tree_insert(pui_tree, pui, pui);
485 if (iap_is_connected() && !_curl_sid)
486 _curl_sid = g_timeout_add(100, (GSourceFunc) map_download_timeout, NULL);
488 if (!_num_downloads++)
489 gtk_progress_bar_set_text(_progress_item, _("Downloading maps..."));
493 map_download_init(void)
495 curl_easy_queue = g_queue_new();
496 pui_tree = g_tree_new_full((GCompareDataFunc)download_comparefunc, NULL, (GDestroyNotify) progress_update_info_free, NULL);
497 downloading_tree = g_tree_new_full((GCompareDataFunc)download_comparefunc, NULL, (GDestroyNotify) progress_update_info_free, NULL);
498 pui_by_easy = g_hash_table_new(g_direct_hash, g_direct_equal);
502 map_download_stop(void)
509 /* Clear the tree and create it again */
511 g_tree_destroy(pui_tree);
512 pui_tree = g_tree_new_full((GCompareDataFunc)download_comparefunc, NULL, (GDestroyNotify) progress_update_info_free, NULL);
515 /* Close all finished files. */
516 while ((msg = curl_multi_info_read(_curl_multi, &num_msgs))) {
517 if (msg->msg == CURLMSG_DONE) {
518 /* This is a map download. */
519 ProgressUpdateInfo *pui = g_hash_table_lookup(pui_by_easy, msg->easy_handle);
520 g_queue_push_head(curl_easy_queue, msg->easy_handle);
521 g_hash_table_remove(pui_by_easy, msg->easy_handle);
523 curl_multi_remove_handle(_curl_multi, msg->easy_handle);
527 g_debug("Stopping downloads");
528 while ((curr = g_queue_pop_tail(curl_easy_queue)))
529 curl_easy_cleanup(curr);
530 curl_multi_cleanup(_curl_multi);
534 g_debug("No downloads to stop");
539 * Clean up CURL and structures
542 map_download_deinit(void)
548 /* Finish up all downloads. */
549 while (CURLM_CALL_MULTI_PERFORM == curl_multi_perform(_curl_multi, &num_transfers) || num_transfers) {
550 g_debug("NT: %d", num_transfers);
553 /* Stop all transfers and cleanup */
557 g_tree_destroy(pui_tree);
558 if (downloading_tree)
559 g_tree_destroy(downloading_tree);
561 g_hash_table_destroy(pui_by_easy);
563 g_queue_free(curl_easy_queue);
567 g_source_remove(_curl_sid);