skin_engine: make sure to free all buflib allocations so we dont leak handles/memory

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30554 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 53 insertions, 34 deletions

diff --git a/apps/gui/skin_engine/skin_engine.c b/apps/gui/skin_engine/skin_engine.c
index 8e85cb891f..7a9a10ec57 100644
--- a/apps/gui/skin_engine/skin_engine.c
+++ b/apps/gui/skin_engine/skin_engine.c
@@ -55,34 +55,7 @@ void theme_init_buffer(void)
 }
 #endif
 
-void settings_apply_skins(void)
-{
-    int i, j;
-    skin_buffer_init(skin_buffer, SKIN_BUFFER_SIZE);
-    
-#ifdef HAVE_LCD_BITMAP
-    skin_backdrop_init();
-    skin_font_init();
-#endif
-    gui_sync_skin_init();
-
-    /* Make sure each skin is loaded */
-    for (i=0; i<SKINNABLE_SCREENS_COUNT; i++)
-    {
-        FOR_NB_SCREENS(j)
-            skin_get_gwps(i, j);
-    }
-#if LCD_DEPTH > 1 || defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
-    skin_backdrops_preload(); /* should maybe check the retval here... */
-#endif
-    viewportmanager_theme_changed(THEME_STATUSBAR);
-#if LCD_DEPTH > 1 || defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
-    FOR_NB_SCREENS(i)
-        skin_backdrop_show(sb_get_backdrop(i));
-#endif
-}
-
-
+void skin_data_free_buflib_allocs(struct wps_data *wps_data);
 char* wps_default_skin(enum screen_type screen);
 char* default_radio_skin(enum screen_type screen);
 
@@ -130,6 +103,40 @@ void gui_sync_skin_init(void)
     }
 }
 
+void settings_apply_skins(void)
+{
+    int i, j;
+
+    for (i=0; i<SKINNABLE_SCREENS_COUNT; i++)
+    {
+        FOR_NB_SCREENS(j)
+            skin_data_free_buflib_allocs(&skins[j][i].data);
+    }
+
+    skin_buffer_init(skin_buffer, SKIN_BUFFER_SIZE);
+    
+#ifdef HAVE_LCD_BITMAP
+    skin_backdrop_init();
+    skin_font_init();
+#endif
+    gui_sync_skin_init();
+
+    /* Make sure each skin is loaded */
+    for (i=0; i<SKINNABLE_SCREENS_COUNT; i++)
+    {
+        FOR_NB_SCREENS(j)
+            skin_get_gwps(i, j);
+    }
+#if LCD_DEPTH > 1 || defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
+    skin_backdrops_preload(); /* should maybe check the retval here... */
+#endif
+    viewportmanager_theme_changed(THEME_STATUSBAR);
+#if LCD_DEPTH > 1 || defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
+    FOR_NB_SCREENS(i)
+        skin_backdrop_show(sb_get_backdrop(i));
+#endif
+}
+
 void skin_load(enum skinnable_screens skin, enum screen_type screen,
                const char *buf, bool isfile)
 {
diff --git a/apps/gui/skin_engine/skin_parser.c b/apps/gui/skin_engine/skin_parser.c
index d6091f9441..97f2d9a5f7 100644
--- a/apps/gui/skin_engine/skin_parser.c
+++ b/apps/gui/skin_engine/skin_parser.c
@@ -1424,12 +1424,12 @@ static bool check_feature_tag(const int type)
     }
 }
 
-/*
- * initial setup of wps_data; does reset everything
- * except fields which need to survive, i.e.
- * 
- **/
-static void skin_data_reset(struct wps_data *wps_data)
+/* This is used to free any buflib allocations before the rest of
+ * wps_data is reset.
+ * The call to this in settings_apply_skins() is the last chance to do
+ * any core_free()'s before wps_data is trashed and those handles lost
+ */
+void skin_data_free_buflib_allocs(struct wps_data *wps_data)
 {
 #ifdef HAVE_LCD_BITMAP
 #ifndef __PCTOOL__
@@ -1442,6 +1442,18 @@ static void skin_data_reset(struct wps_data *wps_data)
         list = list->next;
     }
 #endif
+#endif
+}
+
+/*
+ * initial setup of wps_data; does reset everything
+ * except fields which need to survive, i.e.
+ * Also called if the load fails
+ **/
+static void skin_data_reset(struct wps_data *wps_data)
+{
+    skin_data_free_buflib_allocs(wps_data);
+#ifdef HAVE_LCD_BITMAP
     wps_data->images = NULL;
 #endif
     wps_data->tree = NULL;