src/cache-loader.c

   1 /*
   2  * Geeqie
   3  * (C) 2005 John Ellis
   4  * Copyright (C) 2008 - 2012 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include "main.h"
  14 #include "cache-loader.h"
  15 #include "cache.h"
  16
  17 #include "filedata.h"
  18 #include "exif.h"
  19 #include "metadata.h"
  20 #include "md5-util.h"
  21 #include "ui_fileops.h"
  22
  23
  24 static gboolean cache_loader_process(CacheLoader *cl);
  25
  26
  27 static void cache_loader_done_cb(ImageLoader *il, gpointer data)
  28 {
  29         CacheLoader *cl = data;
  30
  31         cache_loader_process(cl);
  32 }
  33
  34 static void cache_loader_error_cb(ImageLoader *il, gpointer data)
  35 {
  36         CacheLoader *cl = data;
  37
  38         cl->error = TRUE;
  39         cache_loader_done_cb(il, data);
  40 }
  41
  42 static gboolean cache_loader_process(CacheLoader *cl)
  43 {
  44         if (cl->todo_mask & CACHE_LOADER_SIMILARITY &&
  45             !cl->cd->similarity)
  46                 {
  47                 GdkPixbuf *pixbuf;
  48
  49                 if (!cl->il && !cl->error)
  50                         {
  51                         cl->il = image_loader_new(cl->fd);
  52                         g_signal_connect(G_OBJECT(cl->il), "error", (GCallback)cache_loader_error_cb, cl);
  53                         g_signal_connect(G_OBJECT(cl->il), "done", (GCallback)cache_loader_done_cb, cl);
  54                         if (image_loader_start(cl->il))
  55                                 {
  56                                 return FALSE;
  57                                 }
  58
  59                         cl->error = TRUE;
  60                         }
  61
  62                 pixbuf = image_loader_get_pixbuf(cl->il);
  63                 if (pixbuf)
  64                         {
  65                         if (!cl->error)
  66                                 {
  67                                 ImageSimilarityData *sim;
  68
  69                                 sim = image_sim_new_from_pixbuf(pixbuf);
  70                                 cache_sim_data_set_similarity(cl->cd, sim);
  71                                 image_sim_free(sim);
  72
  73                                 cl->done_mask |= CACHE_LOADER_SIMILARITY;
  74                                 }
  75
  76                         /* we have the dimensions via pixbuf */
  77                         if (!cl->cd->dimensions)
  78                                 {
  79                                 cache_sim_data_set_dimensions(cl->cd, gdk_pixbuf_get_width(pixbuf),
  80                                                                       gdk_pixbuf_get_height(pixbuf));
  81                                 if (cl->todo_mask & CACHE_LOADER_DIMENSIONS)
  82                                         {
  83                                         cl->todo_mask &= ~CACHE_LOADER_DIMENSIONS;
  84                                         cl->done_mask |= CACHE_LOADER_DIMENSIONS;
  85                                         }
  86                                 }
  87                         }
  88
  89                 image_loader_free(cl->il);
  90                 cl->il = NULL;
  91
  92                 cl->todo_mask &= ~CACHE_LOADER_SIMILARITY;
  93                 }
  94         else if (cl->todo_mask & CACHE_LOADER_DIMENSIONS &&
  95                  !cl->cd->dimensions)
  96                 {
  97                 if (!cl->error &&
  98                     image_load_dimensions(cl->fd, &cl->cd->width, &cl->cd->height))
  99                         {
 100                         cl->cd->dimensions = TRUE;
 101                         cl->done_mask |= CACHE_LOADER_DIMENSIONS;
 102                         }
 103                 else
 104                         {
 105                         cl->error = TRUE;
 106                         }
 107
 108                 cl->todo_mask &= ~CACHE_LOADER_DIMENSIONS;
 109                 }
 110         else if (cl->todo_mask & CACHE_LOADER_MD5SUM &&
 111                  !cl->cd->have_md5sum)
 112                 {
 113                 if (md5_get_digest_from_file_utf8(cl->fd->path, cl->cd->md5sum))
 114                         {
 115                         cl->cd->have_md5sum = TRUE;
 116                         cl->done_mask |= CACHE_LOADER_MD5SUM;
 117                         }
 118                 else
 119                         {
 120                         cl->error = TRUE;
 121                         }
 122
 123                 cl->todo_mask &= ~CACHE_LOADER_MD5SUM;
 124                 }
 125         else if (cl->todo_mask & CACHE_LOADER_DATE &&
 126                  !cl->cd->have_date)
 127                 {
 128                 time_t date = -1;
 129                 gchar *text;
 130
 131                 text =  metadata_read_string(cl->fd, "formatted.DateTime", METADATA_FORMATTED);
 132                 if (text)
 133                         {
 134                         struct tm t;
 135
 136                         memset(&t, 0, sizeof(t));
 137
 138                         if (sscanf(text, "%d:%d:%d %d:%d:%d", &t.tm_year, &t.tm_mon, &t.tm_mday,
 139                                    &t.tm_hour, &t.tm_min, &t.tm_sec) == 6)
 140                                 {
 141                                 t.tm_year -= 1900;
 142                                 t.tm_mon -= 1;
 143                                 t.tm_isdst = -1;
 144                                 date = mktime(&t);
 145                                 }
 146                         g_free(text);
 147                         }
 148
 149                 cl->cd->date = date;
 150                 cl->cd->have_date = TRUE;
 151
 152                 cl->done_mask |= CACHE_LOADER_DATE;
 153                 cl->todo_mask &= ~CACHE_LOADER_DATE;
 154                 }
 155         else
 156                 {
 157                 /* done, save then call done function */
 158                 if (options->thumbnails.enable_caching &&
 159                     cl->done_mask != CACHE_LOADER_NONE)
 160                         {
 161                         gchar *base;
 162                         mode_t mode = 0755;
 163
 164                         base = cache_get_location(CACHE_TYPE_SIM, cl->fd->path, FALSE, &mode);
 165                         if (recursive_mkdir_if_not_exists(base, mode))
 166                                 {
 167                                 g_free(cl->cd->path);
 168                                 cl->cd->path = cache_get_location(CACHE_TYPE_SIM, cl->fd->path, TRUE, NULL);
 169                                 if (cache_sim_data_save(cl->cd))
 170                                         {
 171                                         filetime_set(cl->cd->path, filetime(cl->fd->path));
 172                                         }
 173                                 }
 174                         g_free(base);
 175                         }
 176
 177                 cl->idle_id = 0;
 178
 179                 if (cl->done_func)
 180                         {
 181                         cl->done_func(cl, cl->error, cl->done_data);
 182                         }
 183
 184                 return FALSE;
 185                 }
 186
 187         return TRUE;
 188 }
 189
 190 static gboolean cache_loader_idle_cb(gpointer data)
 191 {
 192         CacheLoader *cl = data;
 193
 194         return cache_loader_process(cl);
 195 }
 196
 197 CacheLoader *cache_loader_new(FileData *fd, CacheDataType load_mask,
 198                               CacheLoaderDoneFunc done_func, gpointer done_data)
 199 {
 200         CacheLoader *cl;
 201         gchar *found;
 202
 203         if (!fd || !isfile(fd->path)) return NULL;
 204
 205         cl = g_new0(CacheLoader, 1);
 206         cl->fd = file_data_ref(fd);
 207
 208         cl->done_func = done_func;
 209         cl->done_data = done_data;
 210
 211         found = cache_find_location(CACHE_TYPE_SIM, cl->fd->path);
 212         if (found && filetime(found) == filetime(cl->fd->path))
 213                 {
 214                 cl->cd = cache_sim_data_load(found);
 215                 }
 216         g_free(found);
 217
 218         if (!cl->cd) cl->cd = cache_sim_data_new();
 219
 220         cl->todo_mask = load_mask;
 221         cl->done_mask = CACHE_LOADER_NONE;
 222
 223         cl->il = NULL;
 224         cl->idle_id = g_idle_add(cache_loader_idle_cb, cl);
 225
 226         cl->error = FALSE;
 227
 228         return cl;
 229 }
 230
 231 void cache_loader_free(CacheLoader *cl)
 232 {
 233         if (!cl) return;
 234
 235         if (cl->idle_id)
 236                 {
 237                 g_source_remove(cl->idle_id);
 238                 cl->idle_id = 0;
 239                 }
 240
 241         image_loader_free(cl->il);
 242         cache_sim_data_free(cl->cd);
 243
 244         file_data_unref(cl->fd);
 245         g_free(cl);
 246 }
 247 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */