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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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57c8e0146f
Add new GST_API_EXPORT in config.h and use that for GST_*_API decorators instead of GST_EXPORT. The right export define depends on the toolchain and whether we're using -fvisibility=hidden or not, so it's better to set it to the right thing directly than hard-coding a compiler whitelist in the public header. We put the export define into config.h instead of passing it via the command line to the compiler because it might contain spaces and brackets and in the autotools scenario we'd have to pass that through multiple layers of plumbing and Makefile/shell escaping and we're just not going to be *that* lucky. The export define is only used if we're compiling our lib, not by external users of the lib headers, so it's not a problem to put it into config.h Also, this means all .c files of libs need to include config.h to get the export marker defined, so fix up a few that didn't include config.h. This commit depends on a common submodule commit that makes gst-glib-gen.mak add an #include "config.h" to generated enum/marshal .c files for the autotools build. https://bugzilla.gnome.org/show_bug.cgi?id=797185
133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/* GStreamer
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* Copyright (C) <2014> William Manley <will@williammanley.net>
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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:gstnetcontrolmessagemeta
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* @title: GstNetControlMessageMeta
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* @short_description: Network Control Message Meta
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*
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* #GstNetControlMessageMeta can be used to store control messages (ancillary
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* data) which was received with or is to be sent alongside the buffer data.
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* When used with socket sinks and sources which understand this meta it allows
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* sending and receiving ancillary data such as unix credentials (See
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* #GUnixCredentialsMessage) and Unix file descriptions (See #GUnixFDMessage).
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstnetcontrolmessagemeta.h"
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static gboolean
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net_control_message_meta_init (GstMeta * meta, gpointer params,
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GstBuffer * buffer)
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{
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GstNetControlMessageMeta *nmeta = (GstNetControlMessageMeta *) meta;
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nmeta->message = NULL;
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return TRUE;
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}
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static gboolean
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net_control_message_meta_transform (GstBuffer * transbuf, GstMeta * meta,
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GstBuffer * buffer, GQuark type, gpointer data)
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{
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GstNetControlMessageMeta *smeta, *dmeta;
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smeta = (GstNetControlMessageMeta *) meta;
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/* we always copy no matter what transform */
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dmeta = gst_buffer_add_net_control_message_meta (transbuf, smeta->message);
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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_control_message_meta_free (GstMeta * meta, GstBuffer * buffer)
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{
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GstNetControlMessageMeta *nmeta = (GstNetControlMessageMeta *) meta;
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if (nmeta->message)
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g_object_unref (nmeta->message);
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nmeta->message = NULL;
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}
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GType
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gst_net_control_message_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 =
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gst_meta_api_type_register ("GstNetControlMessageMetaAPI", 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_control_message_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 =
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gst_meta_register (GST_NET_CONTROL_MESSAGE_META_API_TYPE,
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"GstNetControlMessageMeta",
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sizeof (GstNetControlMessageMeta),
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net_control_message_meta_init,
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net_control_message_meta_free,
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net_control_message_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_control_message_meta:
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* @buffer: a #GstBuffer
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* @message: a @GSocketControlMessage to attach to @buffer
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*
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* Attaches @message as metadata in a #GstNetControlMessageMeta to @buffer.
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*
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* Returns: (transfer none): a #GstNetControlMessageMeta connected to @buffer
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*/
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GstNetControlMessageMeta *
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gst_buffer_add_net_control_message_meta (GstBuffer * buffer,
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GSocketControlMessage * message)
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{
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GstNetControlMessageMeta *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_CONTROL_MESSAGE (message), NULL);
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meta =
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(GstNetControlMessageMeta *) gst_buffer_add_meta (buffer,
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GST_NET_CONTROL_MESSAGE_META_INFO, NULL);
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meta->message = g_object_ref (message);
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return meta;
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}
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