macosx: do not enable video filters which are not set in profile (fixes #9010)

modules/gui/macosx/VideoEffects.m

@@ -484,31 +484,40 @@ static VLCVideoEffects *_o_sharedInstance = nil;
     [o_addlogo_transparency_lbl setEnabled: b_state];
 }
 
-- (void)setVideoFilter: (char *)psz_name on:(BOOL)b_on
+- (const char *)getFilterType:(char *)psz_name
 {
-    char *psz_string, *psz_parser;
-    const char *psz_filter_type;
-
     module_t *p_obj = module_find(psz_name);
     if (!p_obj) {
-        msg_Err(p_intf, "Unable to find filter module \"%s\".", psz_name);
-        return;
+        return NULL;
     }
-    msg_Dbg(p_intf, "will set filter '%s'", psz_name);
 
     if (module_provides(p_obj, "video splitter")) {
-        psz_filter_type = "video-splitter";
+        return "video-splitter";
     } else if (module_provides(p_obj, "video filter2")) {
-        psz_filter_type = "video-filter";
+        return "video-filter";
     } else if (module_provides(p_obj, "sub source")) {
-        psz_filter_type = "sub-source";
+        return "sub-source";
     } else if (module_provides(p_obj, "sub filter")) {
-        psz_filter_type = "sub-filter";
+        return "sub-filter";
     } else {
         msg_Err(p_intf, "Unknown video filter type.");
+        return NULL;
+    }
+}
+
+- (void)setVideoFilter: (char *)psz_name on:(BOOL)b_on
+{
+    char *psz_string, *psz_parser;
+
+    const char *psz_filter_type = [self getFilterType:psz_name];
+    if (!psz_filter_type) {
+        msg_Err(p_intf, "Unable to find filter module \"%s\".", psz_name);
         return;
     }
 
+    msg_Dbg(p_intf, "will set filter '%s'", psz_name);
+
+
     psz_string = config_GetPsz(p_intf, psz_filter_type);
 
     if (b_on) {
@@ -563,6 +572,28 @@ static VLCVideoEffects *_o_sharedInstance = nil;
 
     vlc_object_t *p_filter = vlc_object_find_name(pl_Get(p_intf), psz_filter);
     if (p_filter) {
+
+        /* we cannot rely on the p_filter existence.
+         This filter might be just
+         disabled, but the object still exists. Therefore, the string
+         is checked, additionally.
+         */
+        const char *psz_filter_type = [self getFilterType:psz_filter];
+        if (!psz_filter_type) {
+            msg_Err(p_intf, "Unable to find filter module \"%s\".", psz_name);
+            goto out;
+        }
+
+        char *psz_string = config_GetPsz(p_intf, psz_filter_type);
+        if (!psz_string) {
+            goto out;
+        }
+        if (strstr(psz_string, psz_filter) == NULL) {
+            free(psz_string);
+            goto out;
+        }
+        free(psz_string);
+
         int i_type;
         i_type = var_Type(p_filter, psz_name);
         if (i_type == 0)
@@ -570,11 +601,13 @@ static VLCVideoEffects *_o_sharedInstance = nil;
 
         if (!(i_type & VLC_VAR_ISCOMMAND)) {
             msg_Warn(p_intf, "Brute-restarting filter '%s', because the last changed option isn't a command", psz_name);
+
             [self setVideoFilter: psz_filter on: NO];
             [self setVideoFilter: psz_filter on: YES];
         } else
             msg_Dbg(p_intf, "restart not needed");
 
+        out:
         vlc_object_release(p_filter);
     }
 }