X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=filter.c;h=804b5e1e569a9c680e309f14738e77481161682a;hp=79574db14c2299af0dda1b40bbf8215d2a3f1ae7;hb=33692c33f2effa9620064aec44c6196a8d830d05;hpb=abfb661f35e99e99c09a94d84839356d905af080

diff --git a/filter.c b/filter.c
index 79574db1..804b5e1e 100644
--- a/filter.c
+++ b/filter.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2014 Andre Noll <maan@tuebingen.mpg.de>
+ * Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -24,6 +24,12 @@
 /** The list of all status items used by para_{server,audiod,gui}. */
 const char *status_item_list[] = {STATUS_ITEM_ARRAY};
 
+/**
+ * Dummy version which only contains NULL pointers.
+ *
+ * This is used by the amp filter which first tries to obtain the amplification
+ * value from an element in this array.
+ */
 char *stat_item_values[NUM_STAT_ITEMS] = {NULL};
 
 /** Initialize the array of errors for para_filter. */
@@ -52,7 +58,7 @@ __noreturn static void print_help_and_die(void)
 
 	ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
 	print_filter_helps(d? GPH_MODULE_FLAGS_DETAILED : GPH_MODULE_FLAGS);
-	exit(0);
+	exit(EXIT_SUCCESS);
 }
 
 static int parse_config(void)
@@ -100,7 +106,7 @@ int main(int argc, char *argv[])
 {
 	static struct sched s;
 	int i, ret;
-	struct filter *f;
+	const struct filter *f;
 	struct btr_node *parent;
 	struct filter_node **fns;
 
@@ -127,7 +133,7 @@ int main(int argc, char *argv[])
 			goto out_cleanup;
 		}
 		fn->filter_num = ret;
-		f = filters + fn->filter_num;
+		f = filter_get(fn->filter_num);
 		PARA_DEBUG_LOG("filter #%d: %s\n", i, f->name);
 		fn->btrn = btr_new_node(&(struct btr_node_description)
 			EMBRACE(.name = f->name, .parent = parent,
@@ -136,7 +142,8 @@ int main(int argc, char *argv[])
 		ti.pre_select = f->pre_select;
 		ti.post_select = f->post_select;
 		ti.context = fn;
-		f->open(fn);
+		if (f->open)
+			f->open(fn);
 		fn->task = task_register(&ti, &s);
 		parent = fn->btrn;
 	}
@@ -153,7 +160,7 @@ out_cleanup:
 	for (i--; i >= 0; i--) {
 		struct filter_node *fn = fns[i];
 
-		f = filters + fn->filter_num;
+		f = filter_get(fn->filter_num);
 		if (f->close)
 			f->close(fn);
 		btr_remove_node(&fn->btrn);