+/*
+ * GQview
+ * (C) 2005 John Ellis
+ *
+ * Author: John Ellis
+ *
+ * This software is released under the GNU General Public License (GNU GPL).
+ * Please read the included file COPYING for more information.
+ * This software comes with no warranty of any kind, use at your own risk!
+ */
+
+#include "gqview.h"
+#include "cache-loader.h"
+
+#include "exif.h"
+#include "md5-util.h"
+#include "ui_fileops.h"
+
+
+static gboolean cache_loader_process(CacheLoader *cl);
+
+
+static void cache_loader_done_cb(ImageLoader *il, gpointer data)
+{
+ CacheLoader *cl = data;
+
+ cache_loader_process(cl);
+}
+
+static void cache_loader_error_cb(ImageLoader *il, gpointer data)
+{
+ CacheLoader *cl = data;
+
+ cl->error = TRUE;
+ cache_loader_done_cb(il, data);
+}
+
+static gboolean cache_loader_process(CacheLoader *cl)
+{
+ if (cl->todo_mask & CACHE_LOADER_SIMILARITY &&
+ !cl->cd->similarity)
+ {
+ GdkPixbuf *pixbuf;
+
+ if (!cl->il && !cl->error)
+ {
+ cl->il = image_loader_new(cl->path);
+ image_loader_set_error_func(cl->il, cache_loader_error_cb, cl);
+ if (image_loader_start(cl->il, cache_loader_done_cb, cl))
+ {
+ return FALSE;
+ }
+
+ cl->error = TRUE;
+ }
+
+ pixbuf = image_loader_get_pixbuf(cl->il);
+ if (pixbuf)
+ {
+ if (!cl->error)
+ {
+ ImageSimilarityData *sim;
+
+ sim = image_sim_new_from_pixbuf(pixbuf);
+ cache_sim_data_set_similarity(cl->cd, sim);
+ image_sim_free(sim);
+
+ cl->done_mask |= CACHE_LOADER_SIMILARITY;
+ }
+
+ /* we have the dimensions via pixbuf */
+ if (!cl->cd->dimensions)
+ {
+ cache_sim_data_set_dimensions(cl->cd, gdk_pixbuf_get_width(pixbuf),
+ gdk_pixbuf_get_height(pixbuf));
+ if (cl->todo_mask & CACHE_LOADER_DIMENSIONS)
+ {
+ cl->todo_mask &= ~CACHE_LOADER_DIMENSIONS;
+ cl->done_mask |= CACHE_LOADER_DIMENSIONS;
+ }
+ }
+ }
+
+ image_loader_free(cl->il);
+ cl->il = NULL;
+
+ cl->todo_mask &= ~CACHE_LOADER_SIMILARITY;
+ }
+ else if (cl->todo_mask & CACHE_LOADER_DIMENSIONS &&
+ !cl->cd->dimensions)
+ {
+ if (!cl->error &&
+ image_load_dimensions(cl->path, &cl->cd->width, &cl->cd->height))
+ {
+ cl->cd->dimensions = TRUE;
+ cl->done_mask |= CACHE_LOADER_DIMENSIONS;
+ }
+ else
+ {
+ cl->error = TRUE;
+ }
+
+ cl->todo_mask &= ~CACHE_LOADER_DIMENSIONS;
+ }
+ else if (cl->todo_mask & CACHE_LOADER_MD5SUM &&
+ !cl->cd->have_md5sum)
+ {
+ if (md5_get_digest_from_file_utf8(cl->path, cl->cd->md5sum))
+ {
+ cl->cd->have_md5sum = TRUE;
+ cl->done_mask |= CACHE_LOADER_MD5SUM;
+ }
+ else
+ {
+ cl->error = TRUE;
+ }
+
+ cl->todo_mask &= ~CACHE_LOADER_MD5SUM;
+ }
+ else if (cl->todo_mask & CACHE_LOADER_DATE &&
+ !cl->cd->have_date)
+ {
+ time_t date = -1;
+ ExifData *exif;
+
+ exif = exif_read(cl->path);
+ if (exif)
+ {
+ gchar *text;
+
+ text = exif_get_data_as_text(exif, "fDateTime");
+ if (text)
+ {
+ struct tm t = { 0 };
+
+ if (sscanf(text, "%d:%d:%d %d:%d:%d", &t.tm_year, &t.tm_mon, &t.tm_mday,
+ &t.tm_hour, &t.tm_min, &t.tm_sec) == 6)
+ {
+ t.tm_year -= 1900;
+ t.tm_mon -= 1;
+ date = mktime(&t);
+ }
+ g_free(text);
+ }
+ exif_free(exif);
+ }
+
+ cl->cd->date = date;
+ cl->cd->have_date = TRUE;
+
+ cl->done_mask |= CACHE_LOADER_DATE;
+ cl->todo_mask &= ~CACHE_LOADER_DATE;
+ }
+ else
+ {
+ /* done, save then call done function */
+ if (enable_thumb_caching &&
+ cl->done_mask != CACHE_LOADER_NONE)
+ {
+ gchar *base;
+ mode_t mode = 0755;
+
+ base = cache_get_location(CACHE_TYPE_SIM, cl->path, FALSE, &mode);
+ if (cache_ensure_dir_exists(base, mode))
+ {
+ g_free(cl->cd->path);
+ cl->cd->path = cache_get_location(CACHE_TYPE_SIM, cl->path, TRUE, NULL);
+ if (cache_sim_data_save(cl->cd))
+ {
+ filetime_set(cl->cd->path, filetime(cl->path));
+ }
+ }
+ g_free(base);
+ }
+
+ cl->idle_id = -1;
+
+ if (cl->done_func)
+ {
+ cl->done_func(cl, cl->error, cl->done_data);
+ }
+
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean cache_loader_idle_cb(gpointer data)
+{
+ CacheLoader *cl = data;
+
+ return cache_loader_process(cl);
+}
+
+CacheLoader *cache_loader_new(const gchar *path, CacheDataType load_mask,
+ CacheLoaderDoneFunc done_func, gpointer done_data)
+{
+ CacheLoader *cl;
+ gchar *found;
+
+ if (!path || !isfile(path)) return NULL;
+
+ cl = g_new0(CacheLoader, 1);
+ cl->path = g_strdup(path);
+
+ cl->done_func = done_func;
+ cl->done_data = done_data;
+
+ found = cache_find_location(CACHE_TYPE_SIM, path);
+ if (found && filetime(found) == filetime(path))
+ {
+ cl->cd = cache_sim_data_load(found);
+ }
+ g_free(found);
+
+ if (!cl->cd) cl->cd = cache_sim_data_new();
+
+ cl->todo_mask = load_mask;
+ cl->done_mask = CACHE_LOADER_NONE;
+
+ cl->il = NULL;
+ cl->idle_id = g_idle_add(cache_loader_idle_cb, cl);
+
+ cl->error = FALSE;
+
+ return cl;
+}
+
+void cache_loader_free(CacheLoader *cl)
+{
+ if (!cl) return;
+
+ if (cl->idle_id != -1)
+ {
+ g_source_remove(cl->idle_id);
+ cl->idle_id = -1;
+ }
+
+ image_loader_free(cl->il);
+ cache_sim_data_free(cl->cd);
+
+ g_free(cl->path);
+ g_free(cl);
+}
+