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075744a894
MSVC warns about the const in the implicit argument conversion in the
calls to g_once_init_{enter,leave}. It's OK so explicitly cast it.
https://bugzilla.gnome.org/show_bug.cgi?id=774293
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/* GStreamer
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* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:gstnetaddressmeta
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* @short_description: Network address metadata
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*
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* #GstNetAddressMeta can be used to store a network address (a #GSocketAddress)
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* in a #GstBuffer so that it network elements can track the to and from address
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* of the buffer.
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*/
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#include <string.h>
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#include "gstnetaddressmeta.h"
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static gboolean
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net_address_meta_init (GstMeta * meta, gpointer params, GstBuffer * buffer)
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{
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GstNetAddressMeta *nmeta = (GstNetAddressMeta *) meta;
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nmeta->addr = NULL;
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return TRUE;
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}
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static gboolean
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net_address_meta_transform (GstBuffer * transbuf, GstMeta * meta,
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GstBuffer * buffer, GQuark type, gpointer data)
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{
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GstNetAddressMeta *smeta, *dmeta;
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smeta = (GstNetAddressMeta *) meta;
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/* we always copy no matter what transform */
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dmeta = gst_buffer_add_net_address_meta (transbuf, smeta->addr);
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if (!dmeta)
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return FALSE;
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return TRUE;
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}
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static void
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net_address_meta_free (GstMeta * meta, GstBuffer * buffer)
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{
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GstNetAddressMeta *nmeta = (GstNetAddressMeta *) meta;
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if (nmeta->addr)
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g_object_unref (nmeta->addr);
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nmeta->addr = NULL;
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}
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GType
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gst_net_address_meta_api_get_type (void)
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{
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static volatile GType type;
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static const gchar *tags[] = { "origin", NULL };
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if (g_once_init_enter (&type)) {
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GType _type = gst_meta_api_type_register ("GstNetAddressMetaAPI", tags);
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g_once_init_leave (&type, _type);
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}
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return type;
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}
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const GstMetaInfo *
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gst_net_address_meta_get_info (void)
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{
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static const GstMetaInfo *meta_info = NULL;
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if (g_once_init_enter ((GstMetaInfo **) & meta_info)) {
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const GstMetaInfo *mi = gst_meta_register (GST_NET_ADDRESS_META_API_TYPE,
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"GstNetAddressMeta",
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sizeof (GstNetAddressMeta),
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net_address_meta_init,
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net_address_meta_free, net_address_meta_transform);
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g_once_init_leave ((GstMetaInfo **) & meta_info, (GstMetaInfo *) mi);
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}
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return meta_info;
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}
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/**
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* gst_buffer_add_net_address_meta:
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* @buffer: a #GstBuffer
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* @addr: a @GSocketAddress to connect to @buffer
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*
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* Attaches @addr as metadata in a #GstNetAddressMeta to @buffer.
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*
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* Returns: (transfer none): a #GstNetAddressMeta connected to @buffer
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*/
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GstNetAddressMeta *
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gst_buffer_add_net_address_meta (GstBuffer * buffer, GSocketAddress * addr)
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{
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GstNetAddressMeta *meta;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
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g_return_val_if_fail (G_IS_SOCKET_ADDRESS (addr), NULL);
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meta =
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(GstNetAddressMeta *) gst_buffer_add_meta (buffer,
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GST_NET_ADDRESS_META_INFO, NULL);
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meta->addr = g_object_ref (addr);
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return meta;
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}
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/**
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* gst_buffer_get_net_address_meta:
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* @buffer: a #GstBuffer
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*
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* Find the #GstNetAddressMeta on @buffer.
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*
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* Returns: (transfer none): the #GstNetAddressMeta or %NULL when there
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* is no such metadata on @buffer.
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*/
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GstNetAddressMeta *
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gst_buffer_get_net_address_meta (GstBuffer * buffer)
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{
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return (GstNetAddressMeta *)
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gst_buffer_get_meta (buffer, GST_NET_ADDRESS_META_API_TYPE);
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}
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