2 * Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
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., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
21 * SECTION:gstnetaddressmeta
22 * @title: GstNetAddressMeta
23 * @short_description: Network address metadata
25 * #GstNetAddressMeta can be used to store a network address (a #GSocketAddress)
26 * in a #GstBuffer so that it network elements can track the to and from address
32 #include "gstnetaddressmeta.h"
35 net_address_meta_init (GstMeta * meta, gpointer params, GstBuffer * buffer)
37 GstNetAddressMeta *nmeta = (GstNetAddressMeta *) meta;
45 net_address_meta_transform (GstBuffer * transbuf, GstMeta * meta,
46 GstBuffer * buffer, GQuark type, gpointer data)
48 GstNetAddressMeta *smeta, *dmeta;
49 smeta = (GstNetAddressMeta *) meta;
51 /* we always copy no matter what transform */
52 dmeta = gst_buffer_add_net_address_meta (transbuf, smeta->addr);
60 net_address_meta_free (GstMeta * meta, GstBuffer * buffer)
62 GstNetAddressMeta *nmeta = (GstNetAddressMeta *) meta;
65 g_object_unref (nmeta->addr);
70 gst_net_address_meta_api_get_type (void)
72 static volatile GType type;
73 static const gchar *tags[] = { "origin", NULL };
75 if (g_once_init_enter (&type)) {
76 GType _type = gst_meta_api_type_register ("GstNetAddressMetaAPI", tags);
77 g_once_init_leave (&type, _type);
83 gst_net_address_meta_get_info (void)
85 static const GstMetaInfo *meta_info = NULL;
87 if (g_once_init_enter ((GstMetaInfo **) & meta_info)) {
88 const GstMetaInfo *mi = gst_meta_register (GST_NET_ADDRESS_META_API_TYPE,
90 sizeof (GstNetAddressMeta),
91 net_address_meta_init,
92 net_address_meta_free, net_address_meta_transform);
93 g_once_init_leave ((GstMetaInfo **) & meta_info, (GstMetaInfo *) mi);
99 * gst_buffer_add_net_address_meta:
100 * @buffer: a #GstBuffer
101 * @addr: a @GSocketAddress to connect to @buffer
103 * Attaches @addr as metadata in a #GstNetAddressMeta to @buffer.
105 * Returns: (transfer none): a #GstNetAddressMeta connected to @buffer
108 gst_buffer_add_net_address_meta (GstBuffer * buffer, GSocketAddress * addr)
110 GstNetAddressMeta *meta;
112 g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
113 g_return_val_if_fail (G_IS_SOCKET_ADDRESS (addr), NULL);
116 (GstNetAddressMeta *) gst_buffer_add_meta (buffer,
117 GST_NET_ADDRESS_META_INFO, NULL);
119 meta->addr = g_object_ref (addr);
125 * gst_buffer_get_net_address_meta:
126 * @buffer: a #GstBuffer
128 * Find the #GstNetAddressMeta on @buffer.
130 * Returns: (transfer none): the #GstNetAddressMeta or %NULL when there
131 * is no such metadata on @buffer.
134 gst_buffer_get_net_address_meta (GstBuffer * buffer)
136 return (GstNetAddressMeta *)
137 gst_buffer_get_meta (buffer, GST_NET_ADDRESS_META_API_TYPE);