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/* GStreamer
* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstnetaddressmeta
* @title: GstNetAddressMeta
* @short_description: Network address metadata
*
* #GstNetAddressMeta can be used to store a network address (a #GSocketAddress)
* in a #GstBuffer so that it network elements can track the to and from address
* of the buffer.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstnetaddressmeta.h"
static gboolean
net_address_meta_init (GstMeta * meta, gpointer params, GstBuffer * buffer)
{
GstNetAddressMeta *nmeta = (GstNetAddressMeta *) meta;
nmeta->addr = NULL;
return TRUE;
}
static gboolean
net_address_meta_transform (GstBuffer * transbuf, GstMeta * meta,
GstBuffer * buffer, GQuark type, gpointer data)
{
GstNetAddressMeta *smeta, *dmeta;
smeta = (GstNetAddressMeta *) meta;
/* we always copy no matter what transform */
dmeta = gst_buffer_add_net_address_meta (transbuf, smeta->addr);
if (!dmeta)
return FALSE;
return TRUE;
}
static void
net_address_meta_free (GstMeta * meta, GstBuffer * buffer)
{
GstNetAddressMeta *nmeta = (GstNetAddressMeta *) meta;
if (nmeta->addr)
g_object_unref (nmeta->addr);
nmeta->addr = NULL;
}
GType
gst_net_address_meta_api_get_type (void)
{
static volatile GType type;
static const gchar *tags[] = { "origin", NULL };
if (g_once_init_enter (&type)) {
GType _type = gst_meta_api_type_register ("GstNetAddressMetaAPI", tags);
g_once_init_leave (&type, _type);
}
return type;
}
const GstMetaInfo *
gst_net_address_meta_get_info (void)
{
static const GstMetaInfo *meta_info = NULL;
if (g_once_init_enter ((GstMetaInfo **) & meta_info)) {
const GstMetaInfo *mi = gst_meta_register (GST_NET_ADDRESS_META_API_TYPE,
"GstNetAddressMeta",
sizeof (GstNetAddressMeta),
net_address_meta_init,
net_address_meta_free, net_address_meta_transform);
g_once_init_leave ((GstMetaInfo **) & meta_info, (GstMetaInfo *) mi);
}
return meta_info;
}
/**
* gst_buffer_add_net_address_meta:
* @buffer: a #GstBuffer
* @addr: a @GSocketAddress to connect to @buffer
*
* Attaches @addr as metadata in a #GstNetAddressMeta to @buffer.
*
* Returns: (transfer none): a #GstNetAddressMeta connected to @buffer
*/
GstNetAddressMeta *
gst_buffer_add_net_address_meta (GstBuffer * buffer, GSocketAddress * addr)
{
GstNetAddressMeta *meta;
g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
g_return_val_if_fail (G_IS_SOCKET_ADDRESS (addr), NULL);
meta =
(GstNetAddressMeta *) gst_buffer_add_meta (buffer,
GST_NET_ADDRESS_META_INFO, NULL);
meta->addr = g_object_ref (addr);
return meta;
}
/**
* gst_buffer_get_net_address_meta:
* @buffer: a #GstBuffer
*
* Find the #GstNetAddressMeta on @buffer.
*
* Returns: (transfer none): the #GstNetAddressMeta or %NULL when there
* is no such metadata on @buffer.
*/
GstNetAddressMeta *
gst_buffer_get_net_address_meta (GstBuffer * buffer)
{
return (GstNetAddressMeta *)
gst_buffer_get_meta (buffer, GST_NET_ADDRESS_META_API_TYPE);
}
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