gstreamer/libs/gst/net/gstnetaddressmeta.c
Wim Taymans e80296cf46 meta: split registration of API and implementation
Split out the registration of the metadata API and its implementation. Make a
GType for each metadata API. This allows us to store extra information with the
API type such as the tags.
Change the buffer API so that we can get the metadata using the API GType.
Change the query API so that we use the metadata API GType in the allocation
query instead of a string.
Update netaddress and unit tests
2012-02-29 17:37:09 +01:00

110 lines
3 KiB
C

/* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gstnetaddressmeta
* @short_description: Network address metadata
*
* #GstNetAddress can be used to store a network address. #GstNetAddressMeta can
* be used to store a network address in a #GstBuffer so that it network
* elements can track the to and from address of the buffer.
*
* Last reviewed on 2011-11-03 (0.11.2)
*/
#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 *nmeta = (GstNetAddressMeta *) meta;
/* we always copy no matter what transform */
gst_buffer_add_net_address_meta (transbuf, nmeta->addr);
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 (meta_info == NULL) {
meta_info = gst_meta_register (GST_NET_ADDRESS_META_API_TYPE,
"GstNetAddressMeta",
sizeof (GstNetAddressMeta),
net_address_meta_init,
net_address_meta_free, net_address_meta_transform);
}
return meta_info;
}
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;
}