2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 #include <gst/gstmeta.h>
22 #include <gst/gsttrace.h>
27 * @size: the size of the new meta data
29 * Create a new metadata object with a given size
31 * Returns: new meta object
34 gst_meta_new_size (gint size)
38 meta = g_malloc0 (size);
46 * @meta: the meta object to ref
48 * increases the refcount of a meta object
51 gst_meta_ref (GstMeta *meta)
53 g_return_if_fail (meta != NULL);
55 gst_trace_add_entry (NULL, 0, meta, "ref meta");
62 * @meta: the meta object to unref
64 * decreases the refcount of a meta object. if the refcount is zero, the
65 * meta object is freed.
68 gst_meta_unref (GstMeta *meta)
70 g_return_if_fail (meta != NULL);
72 gst_trace_add_entry (NULL, 0, meta, "unref meta");
75 if (meta->refcount == 0) {
76 // gst_trace_add_entry(NULL,0,meta,"destroy meta");
78 // g_print("freeing metadata\n");
85 * @meta: the meta object prepare for write
87 * prepares a meta object for writing. A copy of the meta
88 * object is returned if needed.
90 * Returns: the meta object or a copy.
93 gst_meta_cow (GstMeta *meta)
95 g_return_val_if_fail (meta != NULL, NULL);