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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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This exposes a new property, mtu, which is used to determine the initial size of buffers from the buffer pool. If received data exceeds this, the element gracefully handles that in a manner similar to what we had previously: a large memory gets filled and reallocated at the next call to "fill". The default size is set to 1500, which should cover most use cases. With contributions from Mathieu Duponchelle <mathieu@centricular.com> https://bugzilla.gnome.org/show_bug.cgi?id=772841
1742 lines
53 KiB
C
1742 lines
53 KiB
C
/* GStreamer
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* Copyright (C) <2005> Wim Taymans <wim@fluendo.com>
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* Copyright (C) <2005> Nokia Corporation <kai.vehmanen@nokia.com>
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* Copyright (C) <2012> Collabora Ltd.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* Copyright (C) 2014 Tim-Philipp Müller <tim@centricular.com>
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* Copyright (C) 2014 Centricular Ltd
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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:element-udpsrc
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* @see_also: udpsink, multifdsink
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*
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* udpsrc is a network source that reads UDP packets from the network.
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* It can be combined with RTP depayloaders to implement RTP streaming.
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*
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* The udpsrc element supports automatic port allocation by setting the
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* #GstUDPSrc:port property to 0. After setting the udpsrc to PAUSED, the
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* allocated port can be obtained by reading the port property.
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*
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* udpsrc can read from multicast groups by setting the #GstUDPSrc:multicast-group
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* property to the IP address of the multicast group.
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*
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* Alternatively one can provide a custom socket to udpsrc with the #GstUDPSrc:socket
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* property, udpsrc will then not allocate a socket itself but use the provided
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* one.
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*
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* The #GstUDPSrc:caps property is mainly used to give a type to the UDP packet
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* so that they can be autoplugged in GStreamer pipelines. This is very useful
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* for RTP implementations where the contents of the UDP packets is transfered
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* out-of-bounds using SDP or other means.
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*
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* The #GstUDPSrc:buffer-size property is used to change the default kernel
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* buffersizes used for receiving packets. The buffer size may be increased for
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* high-volume connections, or may be decreased to limit the possible backlog of
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* incoming data. The system places an absolute limit on these values, on Linux,
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* for example, the default buffer size is typically 50K and can be increased to
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* maximally 100K.
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*
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* The #GstUDPSrc:skip-first-bytes property is used to strip off an arbitrary
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* number of bytes from the start of the raw udp packet and can be used to strip
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* off proprietary header, for example.
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*
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* The udpsrc is always a live source. It does however not provide a #GstClock,
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* this is left for downstream elements such as an RTP session manager or demuxer
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* (such as an MPEG demuxer). As with all live sources, the captured buffers
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* will have their timestamp set to the current running time of the pipeline.
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*
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* udpsrc implements a #GstURIHandler interface that handles udp://host:port
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* type URIs.
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*
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* If the #GstUDPSrc:timeout property is set to a value bigger than 0, udpsrc
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* will generate an element message named
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* <classname>"GstUDPSrcTimeout"</classname>
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* if no data was recieved in the given timeout.
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* The message's structure contains one field:
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* <itemizedlist>
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* <listitem>
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* <para>
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* #guint64
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* <classname>"timeout"</classname>: the timeout in microseconds that
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* expired when waiting for data.
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* </para>
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* </listitem>
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* </itemizedlist>
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* The message is typically used to detect that no UDP arrives in the receiver
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* because it is blocked by a firewall.
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*
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* A custom file descriptor can be configured with the
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* #GstUDPSrc:socket property. The socket will be closed when setting
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* the element to READY by default. This behaviour can be overriden
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* with the #GstUDPSrc:close-socket property, in which case the
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* application is responsible for closing the file descriptor.
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*
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* <refsect2>
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* <title>Examples</title>
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* |[
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* gst-launch-1.0 -v udpsrc ! fakesink dump=1
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* ]| A pipeline to read from the default port and dump the udp packets.
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* To actually generate udp packets on the default port one can use the
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* udpsink element. When running the following pipeline in another terminal, the
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* above mentioned pipeline should dump data packets to the console.
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* |[
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* gst-launch-1.0 -v audiotestsrc ! udpsink
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* ]|
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* |[
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* gst-launch-1.0 -v udpsrc port=0 ! fakesink
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* ]| read udp packets from a free port.
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* </refsect2>
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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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/* Needed to get struct in6_pktinfo.
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* Also all these have to be before glib.h is included as
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* otherwise struct in6_pktinfo is not defined completely
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* due to broken glibc headers */
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#define _GNU_SOURCE
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/* Needed for OSX/iOS to define the IPv6 variants */
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#define __APPLE_USE_RFC_3542
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#include <sys/types.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#include <string.h>
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#include "gstudpsrc.h"
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#include <gst/net/gstnetaddressmeta.h>
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#include <gio/gnetworking.h>
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/* Required for other parts of in_pktinfo / in6_pktinfo but only
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* on non-Windows and can be included after glib.h */
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#ifndef G_PLATFORM_WIN32
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#include <netinet/ip.h>
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#endif
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/* Control messages for getting the destination address */
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#ifdef IP_PKTINFO
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GType gst_ip_pktinfo_message_get_type (void);
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#define GST_TYPE_IP_PKTINFO_MESSAGE (gst_ip_pktinfo_message_get_type ())
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#define GST_IP_PKTINFO_MESSAGE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GST_TYPE_IP_PKTINFO_MESSAGE, GstIPPktinfoMessage))
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#define GST_IP_PKTINFO_MESSAGE_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), GST_TYPE_IP_PKTINFO_MESSAGE, GstIPPktinfoMessageClass))
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#define GST_IS_IP_PKTINFO_MESSAGE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GST_TYPE_IP_PKTINFO_MESSAGE))
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#define GST_IS_IP_PKTINFO_MESSAGE_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), GST_TYPE_IP_PKTINFO_MESSAGE))
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#define GST_IP_PKTINFO_MESSAGE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GST_TYPE_IP_PKTINFO_MESSAGE, GstIPPktinfoMessageClass))
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typedef struct _GstIPPktinfoMessage GstIPPktinfoMessage;
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typedef struct _GstIPPktinfoMessageClass GstIPPktinfoMessageClass;
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struct _GstIPPktinfoMessageClass
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{
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GSocketControlMessageClass parent_class;
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};
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struct _GstIPPktinfoMessage
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{
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GSocketControlMessage parent;
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guint ifindex;
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#ifndef G_PLATFORM_WIN32
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#ifndef __NetBSD__
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struct in_addr spec_dst;
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#endif
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#endif
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struct in_addr addr;
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};
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G_DEFINE_TYPE (GstIPPktinfoMessage, gst_ip_pktinfo_message,
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G_TYPE_SOCKET_CONTROL_MESSAGE);
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static gsize
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gst_ip_pktinfo_message_get_size (GSocketControlMessage * message)
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{
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return sizeof (struct in_pktinfo);
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}
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static int
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gst_ip_pktinfo_message_get_level (GSocketControlMessage * message)
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{
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return IPPROTO_IP;
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}
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static int
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gst_ip_pktinfo_message_get_msg_type (GSocketControlMessage * message)
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{
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return IP_PKTINFO;
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}
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static GSocketControlMessage *
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gst_ip_pktinfo_message_deserialize (gint level,
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gint type, gsize size, gpointer data)
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{
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struct in_pktinfo *pktinfo;
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GstIPPktinfoMessage *message;
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if (level != IPPROTO_IP || type != IP_PKTINFO)
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return NULL;
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if (size < sizeof (struct in_pktinfo))
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return NULL;
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pktinfo = data;
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message = g_object_new (GST_TYPE_IP_PKTINFO_MESSAGE, NULL);
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message->ifindex = pktinfo->ipi_ifindex;
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#ifndef G_PLATFORM_WIN32
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#ifndef __NetBSD__
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message->spec_dst = pktinfo->ipi_spec_dst;
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#endif
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#endif
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message->addr = pktinfo->ipi_addr;
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return G_SOCKET_CONTROL_MESSAGE (message);
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}
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static void
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gst_ip_pktinfo_message_init (GstIPPktinfoMessage * message)
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{
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}
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static void
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gst_ip_pktinfo_message_class_init (GstIPPktinfoMessageClass * class)
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{
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GSocketControlMessageClass *scm_class;
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scm_class = G_SOCKET_CONTROL_MESSAGE_CLASS (class);
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scm_class->get_size = gst_ip_pktinfo_message_get_size;
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scm_class->get_level = gst_ip_pktinfo_message_get_level;
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scm_class->get_type = gst_ip_pktinfo_message_get_msg_type;
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scm_class->deserialize = gst_ip_pktinfo_message_deserialize;
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}
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#endif
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#ifdef IPV6_PKTINFO
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GType gst_ipv6_pktinfo_message_get_type (void);
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#define GST_TYPE_IPV6_PKTINFO_MESSAGE (gst_ipv6_pktinfo_message_get_type ())
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#define GST_IPV6_PKTINFO_MESSAGE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GST_TYPE_IPV6_PKTINFO_MESSAGE, GstIPV6PktinfoMessage))
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#define GST_IPV6_PKTINFO_MESSAGE_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), GST_TYPE_IPV6_PKTINFO_MESSAGE, GstIPV6PktinfoMessageClass))
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#define GST_IS_IPV6_PKTINFO_MESSAGE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GST_TYPE_IPV6_PKTINFO_MESSAGE))
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#define GST_IS_IPV6_PKTINFO_MESSAGE_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), GST_TYPE_IPV6_PKTINFO_MESSAGE))
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#define GST_IPV6_PKTINFO_MESSAGE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GST_TYPE_IPV6_PKTINFO_MESSAGE, GstIPV6PktinfoMessageClass))
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typedef struct _GstIPV6PktinfoMessage GstIPV6PktinfoMessage;
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typedef struct _GstIPV6PktinfoMessageClass GstIPV6PktinfoMessageClass;
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struct _GstIPV6PktinfoMessageClass
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{
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GSocketControlMessageClass parent_class;
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};
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struct _GstIPV6PktinfoMessage
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{
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GSocketControlMessage parent;
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guint ifindex;
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struct in6_addr addr;
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};
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G_DEFINE_TYPE (GstIPV6PktinfoMessage, gst_ipv6_pktinfo_message,
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G_TYPE_SOCKET_CONTROL_MESSAGE);
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static gsize
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gst_ipv6_pktinfo_message_get_size (GSocketControlMessage * message)
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{
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return sizeof (struct in6_pktinfo);
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}
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static int
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gst_ipv6_pktinfo_message_get_level (GSocketControlMessage * message)
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{
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return IPPROTO_IPV6;
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}
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static int
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gst_ipv6_pktinfo_message_get_msg_type (GSocketControlMessage * message)
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{
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return IPV6_PKTINFO;
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}
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static GSocketControlMessage *
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gst_ipv6_pktinfo_message_deserialize (gint level,
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gint type, gsize size, gpointer data)
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{
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struct in6_pktinfo *pktinfo;
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GstIPV6PktinfoMessage *message;
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if (level != IPPROTO_IPV6 || type != IPV6_PKTINFO)
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return NULL;
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if (size < sizeof (struct in6_pktinfo))
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return NULL;
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pktinfo = data;
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message = g_object_new (GST_TYPE_IPV6_PKTINFO_MESSAGE, NULL);
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message->ifindex = pktinfo->ipi6_ifindex;
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message->addr = pktinfo->ipi6_addr;
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return G_SOCKET_CONTROL_MESSAGE (message);
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}
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static void
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gst_ipv6_pktinfo_message_init (GstIPV6PktinfoMessage * message)
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{
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}
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static void
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gst_ipv6_pktinfo_message_class_init (GstIPV6PktinfoMessageClass * class)
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{
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GSocketControlMessageClass *scm_class;
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scm_class = G_SOCKET_CONTROL_MESSAGE_CLASS (class);
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scm_class->get_size = gst_ipv6_pktinfo_message_get_size;
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scm_class->get_level = gst_ipv6_pktinfo_message_get_level;
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scm_class->get_type = gst_ipv6_pktinfo_message_get_msg_type;
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scm_class->deserialize = gst_ipv6_pktinfo_message_deserialize;
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}
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#endif
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#ifdef IP_RECVDSTADDR
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GType gst_ip_recvdstaddr_message_get_type (void);
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#define GST_TYPE_IP_RECVDSTADDR_MESSAGE (gst_ip_recvdstaddr_message_get_type ())
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#define GST_IP_RECVDSTADDR_MESSAGE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GST_TYPE_IP_RECVDSTADDR_MESSAGE, GstIPRecvdstaddrMessage))
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#define GST_IP_RECVDSTADDR_MESSAGE_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), GST_TYPE_IP_RECVDSTADDR_MESSAGE, GstIPRecvdstaddrMessageClass))
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#define GST_IS_IP_RECVDSTADDR_MESSAGE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GST_TYPE_IP_RECVDSTADDR_MESSAGE))
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#define GST_IS_IP_RECVDSTADDR_MESSAGE_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), GST_TYPE_IP_RECVDSTADDR_MESSAGE))
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#define GST_IP_RECVDSTADDR_MESSAGE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GST_TYPE_IP_RECVDSTADDR_MESSAGE, GstIPRecvdstaddrMessageClass))
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typedef struct _GstIPRecvdstaddrMessage GstIPRecvdstaddrMessage;
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typedef struct _GstIPRecvdstaddrMessageClass GstIPRecvdstaddrMessageClass;
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struct _GstIPRecvdstaddrMessageClass
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{
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GSocketControlMessageClass parent_class;
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};
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struct _GstIPRecvdstaddrMessage
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{
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GSocketControlMessage parent;
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guint ifindex;
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struct in_addr addr;
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};
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G_DEFINE_TYPE (GstIPRecvdstaddrMessage, gst_ip_recvdstaddr_message,
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G_TYPE_SOCKET_CONTROL_MESSAGE);
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static gsize
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gst_ip_recvdstaddr_message_get_size (GSocketControlMessage * message)
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{
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return sizeof (struct in_addr);
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}
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static int
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gst_ip_recvdstaddr_message_get_level (GSocketControlMessage * message)
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{
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return IPPROTO_IP;
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}
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static int
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gst_ip_recvdstaddr_message_get_msg_type (GSocketControlMessage * message)
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{
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return IP_RECVDSTADDR;
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}
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static GSocketControlMessage *
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gst_ip_recvdstaddr_message_deserialize (gint level,
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gint type, gsize size, gpointer data)
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{
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struct in_addr *addr;
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GstIPRecvdstaddrMessage *message;
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if (level != IPPROTO_IP || type != IP_RECVDSTADDR)
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return NULL;
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if (size < sizeof (struct in_addr))
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return NULL;
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addr = data;
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message = g_object_new (GST_TYPE_IP_RECVDSTADDR_MESSAGE, NULL);
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message->addr = *addr;
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return G_SOCKET_CONTROL_MESSAGE (message);
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}
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static void
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gst_ip_recvdstaddr_message_init (GstIPRecvdstaddrMessage * message)
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{
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}
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static void
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gst_ip_recvdstaddr_message_class_init (GstIPRecvdstaddrMessageClass * class)
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{
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GSocketControlMessageClass *scm_class;
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scm_class = G_SOCKET_CONTROL_MESSAGE_CLASS (class);
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scm_class->get_size = gst_ip_recvdstaddr_message_get_size;
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scm_class->get_level = gst_ip_recvdstaddr_message_get_level;
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scm_class->get_type = gst_ip_recvdstaddr_message_get_msg_type;
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scm_class->deserialize = gst_ip_recvdstaddr_message_deserialize;
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}
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#endif
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static gboolean
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gst_udpsrc_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
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{
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GstUDPSrc *udpsrc;
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GstBufferPool *pool;
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gboolean update;
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GstStructure *config;
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GstCaps *caps = NULL;
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udpsrc = GST_UDPSRC (bsrc);
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if (gst_query_get_n_allocation_pools (query) > 0) {
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update = TRUE;
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} else {
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update = FALSE;
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}
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pool = gst_buffer_pool_new ();
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config = gst_buffer_pool_get_config (pool);
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gst_query_parse_allocation (query, &caps, NULL);
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gst_buffer_pool_config_set_params (config, caps, udpsrc->mtu, 0, 0);
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gst_buffer_pool_set_config (pool, config);
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if (update)
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gst_query_set_nth_allocation_pool (query, 0, pool, udpsrc->mtu, 0, 0);
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else
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gst_query_add_allocation_pool (query, pool, udpsrc->mtu, 0, 0);
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gst_object_unref (pool);
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return TRUE;
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}
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/* not 100% correct, but a good upper bound for memory allocation purposes */
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#define MAX_IPV4_UDP_PACKET_SIZE (65536 - 8)
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GST_DEBUG_CATEGORY_STATIC (udpsrc_debug);
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#define GST_CAT_DEFAULT (udpsrc_debug)
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
#define UDP_DEFAULT_PORT 5004
|
|
#define UDP_DEFAULT_MULTICAST_GROUP "0.0.0.0"
|
|
#define UDP_DEFAULT_MULTICAST_IFACE NULL
|
|
#define UDP_DEFAULT_URI "udp://"UDP_DEFAULT_MULTICAST_GROUP":"G_STRINGIFY(UDP_DEFAULT_PORT)
|
|
#define UDP_DEFAULT_CAPS NULL
|
|
#define UDP_DEFAULT_SOCKET NULL
|
|
#define UDP_DEFAULT_BUFFER_SIZE 0
|
|
#define UDP_DEFAULT_TIMEOUT 0
|
|
#define UDP_DEFAULT_SKIP_FIRST_BYTES 0
|
|
#define UDP_DEFAULT_CLOSE_SOCKET TRUE
|
|
#define UDP_DEFAULT_USED_SOCKET NULL
|
|
#define UDP_DEFAULT_AUTO_MULTICAST TRUE
|
|
#define UDP_DEFAULT_REUSE TRUE
|
|
#define UDP_DEFAULT_LOOP TRUE
|
|
#define UDP_DEFAULT_RETRIEVE_SENDER_ADDRESS TRUE
|
|
#define UDP_DEFAULT_MTU (1492)
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
|
|
PROP_PORT,
|
|
PROP_MULTICAST_GROUP,
|
|
PROP_MULTICAST_IFACE,
|
|
PROP_URI,
|
|
PROP_CAPS,
|
|
PROP_SOCKET,
|
|
PROP_BUFFER_SIZE,
|
|
PROP_TIMEOUT,
|
|
PROP_SKIP_FIRST_BYTES,
|
|
PROP_CLOSE_SOCKET,
|
|
PROP_USED_SOCKET,
|
|
PROP_AUTO_MULTICAST,
|
|
PROP_REUSE,
|
|
PROP_ADDRESS,
|
|
PROP_LOOP,
|
|
PROP_RETRIEVE_SENDER_ADDRESS,
|
|
PROP_MTU,
|
|
};
|
|
|
|
static void gst_udpsrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
|
|
|
|
static GstCaps *gst_udpsrc_getcaps (GstBaseSrc * src, GstCaps * filter);
|
|
static gboolean gst_udpsrc_close (GstUDPSrc * src);
|
|
static gboolean gst_udpsrc_unlock (GstBaseSrc * bsrc);
|
|
static gboolean gst_udpsrc_unlock_stop (GstBaseSrc * bsrc);
|
|
static GstFlowReturn gst_udpsrc_fill (GstPushSrc * psrc, GstBuffer * outbuf);
|
|
|
|
static void gst_udpsrc_finalize (GObject * object);
|
|
|
|
static void gst_udpsrc_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_udpsrc_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static GstStateChangeReturn gst_udpsrc_change_state (GstElement * element,
|
|
GstStateChange transition);
|
|
|
|
#define gst_udpsrc_parent_class parent_class
|
|
G_DEFINE_TYPE_WITH_CODE (GstUDPSrc, gst_udpsrc, GST_TYPE_PUSH_SRC,
|
|
G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_udpsrc_uri_handler_init));
|
|
|
|
static void
|
|
gst_udpsrc_class_init (GstUDPSrcClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
GstBaseSrcClass *gstbasesrc_class;
|
|
GstPushSrcClass *gstpushsrc_class;
|
|
|
|
gobject_class = (GObjectClass *) klass;
|
|
gstelement_class = (GstElementClass *) klass;
|
|
gstbasesrc_class = (GstBaseSrcClass *) klass;
|
|
gstpushsrc_class = (GstPushSrcClass *) klass;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (udpsrc_debug, "udpsrc", 0, "UDP src");
|
|
|
|
#ifdef IP_PKTINFO
|
|
GST_TYPE_IP_PKTINFO_MESSAGE;
|
|
#endif
|
|
#ifdef IPV6_PKTINFO
|
|
GST_TYPE_IPV6_PKTINFO_MESSAGE;
|
|
#endif
|
|
#ifdef IP_RECVDSTADDR
|
|
GST_TYPE_IP_RECVDSTADDR_MESSAGE;
|
|
#endif
|
|
|
|
gobject_class->set_property = gst_udpsrc_set_property;
|
|
gobject_class->get_property = gst_udpsrc_get_property;
|
|
gobject_class->finalize = gst_udpsrc_finalize;
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT,
|
|
g_param_spec_int ("port", "Port",
|
|
"The port to receive the packets from, 0=allocate", 0, G_MAXUINT16,
|
|
UDP_DEFAULT_PORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
/* FIXME 2.0: Remove multicast-group property */
|
|
#ifndef GST_REMOVE_DEPRECATED
|
|
g_object_class_install_property (gobject_class, PROP_MULTICAST_GROUP,
|
|
g_param_spec_string ("multicast-group", "Multicast Group",
|
|
"The Address of multicast group to join. (DEPRECATED: "
|
|
"Use address property instead)", UDP_DEFAULT_MULTICAST_GROUP,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_DEPRECATED));
|
|
#endif
|
|
g_object_class_install_property (gobject_class, PROP_MULTICAST_IFACE,
|
|
g_param_spec_string ("multicast-iface", "Multicast Interface",
|
|
"The network interface on which to join the multicast group."
|
|
"This allows multiple interfaces seperated by comma. (\"eth0,eth1\")",
|
|
UDP_DEFAULT_MULTICAST_IFACE,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_URI,
|
|
g_param_spec_string ("uri", "URI",
|
|
"URI in the form of udp://multicast_group:port", UDP_DEFAULT_URI,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_CAPS,
|
|
g_param_spec_boxed ("caps", "Caps",
|
|
"The caps of the source pad", GST_TYPE_CAPS,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_SOCKET,
|
|
g_param_spec_object ("socket", "Socket",
|
|
"Socket to use for UDP reception. (NULL == allocate)",
|
|
G_TYPE_SOCKET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BUFFER_SIZE,
|
|
g_param_spec_int ("buffer-size", "Buffer Size",
|
|
"Size of the kernel receive buffer in bytes, 0=default", 0, G_MAXINT,
|
|
UDP_DEFAULT_BUFFER_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TIMEOUT,
|
|
g_param_spec_uint64 ("timeout", "Timeout",
|
|
"Post a message after timeout nanoseconds (0 = disabled)", 0,
|
|
G_MAXUINT64, UDP_DEFAULT_TIMEOUT,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass),
|
|
PROP_SKIP_FIRST_BYTES, g_param_spec_int ("skip-first-bytes",
|
|
"Skip first bytes", "number of bytes to skip for each udp packet", 0,
|
|
G_MAXINT, UDP_DEFAULT_SKIP_FIRST_BYTES,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_CLOSE_SOCKET,
|
|
g_param_spec_boolean ("close-socket", "Close socket",
|
|
"Close socket if passed as property on state change",
|
|
UDP_DEFAULT_CLOSE_SOCKET,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_USED_SOCKET,
|
|
g_param_spec_object ("used-socket", "Socket Handle",
|
|
"Socket currently in use for UDP reception. (NULL = no socket)",
|
|
G_TYPE_SOCKET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_AUTO_MULTICAST,
|
|
g_param_spec_boolean ("auto-multicast", "Auto Multicast",
|
|
"Automatically join/leave multicast groups",
|
|
UDP_DEFAULT_AUTO_MULTICAST,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_REUSE,
|
|
g_param_spec_boolean ("reuse", "Reuse", "Enable reuse of the port",
|
|
UDP_DEFAULT_REUSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_ADDRESS,
|
|
g_param_spec_string ("address", "Address",
|
|
"Address to receive packets for. This is equivalent to the "
|
|
"multicast-group property for now", UDP_DEFAULT_MULTICAST_GROUP,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* GstUDPSrc::loop:
|
|
*
|
|
* Can be used to disable multicast loopback.
|
|
*
|
|
* Since: 1.8
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_LOOP,
|
|
g_param_spec_boolean ("loop", "Multicast Loopback",
|
|
"Used for setting the multicast loop parameter. TRUE = enable,"
|
|
" FALSE = disable", UDP_DEFAULT_LOOP,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* GstUDPSrc::retrieve-sender-address:
|
|
*
|
|
* Whether to retrieve the sender address and add it to the buffers as
|
|
* meta. Disabling this might result in minor performance improvements
|
|
* in certain scenarios.
|
|
*
|
|
* Since: 1.10
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_RETRIEVE_SENDER_ADDRESS,
|
|
g_param_spec_boolean ("retrieve-sender-address",
|
|
"Retrieve Sender Address",
|
|
"Whether to retrieve the sender address and add it to buffers as "
|
|
"meta. Disabling this might result in minor performance improvements "
|
|
"in certain scenarios", UDP_DEFAULT_RETRIEVE_SENDER_ADDRESS,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* GstUDPSrc::mtu:
|
|
*
|
|
* Maximum expected packet size. This directly defines the allocation
|
|
* size of the receive buffer pool.
|
|
*
|
|
* In case more data is received, a new #GstMemory is appended to the
|
|
* output buffer, ensuring no data is lost, this however leads to that
|
|
* buffer being freed and reallocated.
|
|
*
|
|
* Since: 1.14
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_MTU,
|
|
g_param_spec_uint ("mtu", "Expected Maximum Transmission Unit",
|
|
"Maximum expected packet size. This directly defines the allocation"
|
|
"size of the receive buffer pool.",
|
|
0, G_MAXINT, UDP_DEFAULT_MTU,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class, &src_template);
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"UDP packet receiver", "Source/Network",
|
|
"Receive data over the network via UDP",
|
|
"Wim Taymans <wim@fluendo.com>, "
|
|
"Thijs Vermeir <thijs.vermeir@barco.com>");
|
|
|
|
gstelement_class->change_state = gst_udpsrc_change_state;
|
|
|
|
gstbasesrc_class->unlock = gst_udpsrc_unlock;
|
|
gstbasesrc_class->unlock_stop = gst_udpsrc_unlock_stop;
|
|
gstbasesrc_class->get_caps = gst_udpsrc_getcaps;
|
|
gstbasesrc_class->decide_allocation = gst_udpsrc_decide_allocation;
|
|
|
|
gstpushsrc_class->fill = gst_udpsrc_fill;
|
|
}
|
|
|
|
static void
|
|
gst_udpsrc_init (GstUDPSrc * udpsrc)
|
|
{
|
|
udpsrc->uri =
|
|
g_strdup_printf ("udp://%s:%u", UDP_DEFAULT_MULTICAST_GROUP,
|
|
UDP_DEFAULT_PORT);
|
|
|
|
udpsrc->address = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
|
|
udpsrc->port = UDP_DEFAULT_PORT;
|
|
udpsrc->socket = UDP_DEFAULT_SOCKET;
|
|
udpsrc->multi_iface = g_strdup (UDP_DEFAULT_MULTICAST_IFACE);
|
|
udpsrc->buffer_size = UDP_DEFAULT_BUFFER_SIZE;
|
|
udpsrc->timeout = UDP_DEFAULT_TIMEOUT;
|
|
udpsrc->skip_first_bytes = UDP_DEFAULT_SKIP_FIRST_BYTES;
|
|
udpsrc->close_socket = UDP_DEFAULT_CLOSE_SOCKET;
|
|
udpsrc->external_socket = (udpsrc->socket != NULL);
|
|
udpsrc->auto_multicast = UDP_DEFAULT_AUTO_MULTICAST;
|
|
udpsrc->used_socket = UDP_DEFAULT_USED_SOCKET;
|
|
udpsrc->reuse = UDP_DEFAULT_REUSE;
|
|
udpsrc->loop = UDP_DEFAULT_LOOP;
|
|
udpsrc->retrieve_sender_address = UDP_DEFAULT_RETRIEVE_SENDER_ADDRESS;
|
|
udpsrc->mtu = UDP_DEFAULT_MTU;
|
|
|
|
/* configure basesrc to be a live source */
|
|
gst_base_src_set_live (GST_BASE_SRC (udpsrc), TRUE);
|
|
/* make basesrc output a segment in time */
|
|
gst_base_src_set_format (GST_BASE_SRC (udpsrc), GST_FORMAT_TIME);
|
|
/* make basesrc set timestamps on outgoing buffers based on the running_time
|
|
* when they were captured */
|
|
gst_base_src_set_do_timestamp (GST_BASE_SRC (udpsrc), TRUE);
|
|
}
|
|
|
|
static void
|
|
gst_udpsrc_finalize (GObject * object)
|
|
{
|
|
GstUDPSrc *udpsrc;
|
|
|
|
udpsrc = GST_UDPSRC (object);
|
|
|
|
if (udpsrc->caps)
|
|
gst_caps_unref (udpsrc->caps);
|
|
udpsrc->caps = NULL;
|
|
|
|
g_free (udpsrc->multi_iface);
|
|
udpsrc->multi_iface = NULL;
|
|
|
|
g_free (udpsrc->uri);
|
|
udpsrc->uri = NULL;
|
|
|
|
g_free (udpsrc->address);
|
|
udpsrc->address = NULL;
|
|
|
|
if (udpsrc->socket)
|
|
g_object_unref (udpsrc->socket);
|
|
udpsrc->socket = NULL;
|
|
|
|
if (udpsrc->used_socket)
|
|
g_object_unref (udpsrc->used_socket);
|
|
udpsrc->used_socket = NULL;
|
|
|
|
if (udpsrc->extra_mem)
|
|
gst_memory_unref (udpsrc->extra_mem);
|
|
udpsrc->extra_mem = NULL;
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_udpsrc_getcaps (GstBaseSrc * src, GstCaps * filter)
|
|
{
|
|
GstUDPSrc *udpsrc;
|
|
GstCaps *caps, *result;
|
|
|
|
udpsrc = GST_UDPSRC (src);
|
|
|
|
GST_OBJECT_LOCK (src);
|
|
if ((caps = udpsrc->caps))
|
|
gst_caps_ref (caps);
|
|
GST_OBJECT_UNLOCK (src);
|
|
|
|
if (caps) {
|
|
if (filter) {
|
|
result = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (caps);
|
|
} else {
|
|
result = caps;
|
|
}
|
|
} else {
|
|
result = (filter) ? gst_caps_ref (filter) : gst_caps_new_any ();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
gst_udpsrc_create_cancellable (GstUDPSrc * src)
|
|
{
|
|
GPollFD pollfd;
|
|
|
|
src->cancellable = g_cancellable_new ();
|
|
src->made_cancel_fd = g_cancellable_make_pollfd (src->cancellable, &pollfd);
|
|
}
|
|
|
|
static void
|
|
gst_udpsrc_free_cancellable (GstUDPSrc * src)
|
|
{
|
|
if (src->made_cancel_fd) {
|
|
g_cancellable_release_fd (src->cancellable);
|
|
src->made_cancel_fd = FALSE;
|
|
}
|
|
g_object_unref (src->cancellable);
|
|
src->cancellable = NULL;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_udpsrc_fill (GstPushSrc * psrc, GstBuffer * outbuf)
|
|
{
|
|
GstUDPSrc *udpsrc;
|
|
GSocketAddress *saddr = NULL;
|
|
GSocketAddress **p_saddr;
|
|
gint flags = G_SOCKET_MSG_NONE;
|
|
gboolean try_again;
|
|
GError *err = NULL;
|
|
gssize res;
|
|
gsize offset;
|
|
GSocketControlMessage **msgs = NULL;
|
|
GSocketControlMessage ***p_msgs;
|
|
gint n_msgs = 0, i;
|
|
GstMapInfo info;
|
|
GstMapInfo extra_info;
|
|
GInputVector ivec[2];
|
|
|
|
udpsrc = GST_UDPSRC_CAST (psrc);
|
|
|
|
/* optimization: use messages only in multicast mode and
|
|
* if we can't let the kernel do the filtering for us */
|
|
p_msgs =
|
|
(g_inet_address_get_is_multicast (g_inet_socket_address_get_address
|
|
(udpsrc->addr))) ? &msgs : NULL;
|
|
#ifdef IP_MULTICAST_ALL
|
|
if (g_inet_address_get_family (g_inet_socket_address_get_address
|
|
(udpsrc->addr)) == G_SOCKET_FAMILY_IPV4)
|
|
p_msgs = NULL;
|
|
#endif
|
|
|
|
/* Retrieve sender address unless we've been configured not to do so */
|
|
p_saddr = (udpsrc->retrieve_sender_address) ? &saddr : NULL;
|
|
|
|
if (!gst_buffer_map (outbuf, &info, GST_MAP_READWRITE))
|
|
goto buffer_map_error;
|
|
|
|
ivec[0].buffer = info.data;
|
|
ivec[0].size = info.size;
|
|
|
|
/* Prepare memory in case the data size exceeds mtu */
|
|
if (udpsrc->extra_mem == NULL) {
|
|
GstBufferPool *pool;
|
|
GstStructure *config;
|
|
GstAllocator *allocator = NULL;
|
|
GstAllocationParams params;
|
|
|
|
pool = gst_base_src_get_buffer_pool (GST_BASE_SRC_CAST (psrc));
|
|
config = gst_buffer_pool_get_config (pool);
|
|
gst_buffer_pool_config_get_allocator (config, &allocator, ¶ms);
|
|
|
|
udpsrc->extra_mem =
|
|
gst_allocator_alloc (allocator, MAX_IPV4_UDP_PACKET_SIZE, ¶ms);
|
|
|
|
gst_object_unref (pool);
|
|
gst_structure_free (config);
|
|
if (allocator)
|
|
gst_object_unref (allocator);
|
|
}
|
|
|
|
if (!gst_memory_map (udpsrc->extra_mem, &extra_info, GST_MAP_READWRITE))
|
|
goto memory_map_error;
|
|
|
|
ivec[1].buffer = extra_info.data;
|
|
ivec[1].size = extra_info.size;
|
|
|
|
retry:
|
|
if (saddr != NULL) {
|
|
g_object_unref (saddr);
|
|
saddr = NULL;
|
|
}
|
|
|
|
do {
|
|
gint64 timeout;
|
|
|
|
try_again = FALSE;
|
|
|
|
if (udpsrc->timeout)
|
|
timeout = udpsrc->timeout / 1000;
|
|
else
|
|
timeout = -1;
|
|
|
|
GST_LOG_OBJECT (udpsrc, "doing select, timeout %" G_GINT64_FORMAT, timeout);
|
|
|
|
if (!g_socket_condition_timed_wait (udpsrc->used_socket, G_IO_IN | G_IO_PRI,
|
|
timeout, udpsrc->cancellable, &err)) {
|
|
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY)
|
|
|| g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
|
|
goto stopped;
|
|
} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
|
|
g_clear_error (&err);
|
|
/* timeout, post element message */
|
|
gst_element_post_message (GST_ELEMENT_CAST (udpsrc),
|
|
gst_message_new_element (GST_OBJECT_CAST (udpsrc),
|
|
gst_structure_new ("GstUDPSrcTimeout",
|
|
"timeout", G_TYPE_UINT64, udpsrc->timeout, NULL)));
|
|
} else {
|
|
goto select_error;
|
|
}
|
|
|
|
try_again = TRUE;
|
|
}
|
|
} while (G_UNLIKELY (try_again));
|
|
|
|
res =
|
|
g_socket_receive_message (udpsrc->used_socket, p_saddr, ivec, 2,
|
|
p_msgs, &n_msgs, &flags, udpsrc->cancellable, &err);
|
|
|
|
if (G_UNLIKELY (res < 0)) {
|
|
/* G_IO_ERROR_HOST_UNREACHABLE for a UDP socket means that a packet sent
|
|
* with udpsink generated a "port unreachable" ICMP response. We ignore
|
|
* that and try again.
|
|
* On Windows we get G_IO_ERROR_CONNECTION_CLOSED instead */
|
|
#if GLIB_CHECK_VERSION(2,44,0)
|
|
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_HOST_UNREACHABLE) ||
|
|
g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CONNECTION_CLOSED)) {
|
|
#else
|
|
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_HOST_UNREACHABLE)) {
|
|
#endif
|
|
g_clear_error (&err);
|
|
goto retry;
|
|
}
|
|
goto receive_error;
|
|
}
|
|
|
|
/* Retry if multicast and the destination address is not ours. We don't want
|
|
* to receive arbitrary packets */
|
|
if (p_msgs) {
|
|
GInetAddress *iaddr = g_inet_socket_address_get_address (udpsrc->addr);
|
|
gboolean skip_packet = FALSE;
|
|
gsize iaddr_size = g_inet_address_get_native_size (iaddr);
|
|
const guint8 *iaddr_bytes = g_inet_address_to_bytes (iaddr);
|
|
|
|
for (i = 0; i < n_msgs && !skip_packet; i++) {
|
|
#ifdef IP_PKTINFO
|
|
if (GST_IS_IP_PKTINFO_MESSAGE (msgs[i])) {
|
|
GstIPPktinfoMessage *msg = GST_IP_PKTINFO_MESSAGE (msgs[i]);
|
|
|
|
if (sizeof (msg->addr) == iaddr_size
|
|
&& memcmp (iaddr_bytes, &msg->addr, sizeof (msg->addr)))
|
|
skip_packet = TRUE;
|
|
}
|
|
#endif
|
|
#ifdef IPV6_PKTINFO
|
|
if (GST_IS_IPV6_PKTINFO_MESSAGE (msgs[i])) {
|
|
GstIPV6PktinfoMessage *msg = GST_IPV6_PKTINFO_MESSAGE (msgs[i]);
|
|
|
|
if (sizeof (msg->addr) == iaddr_size
|
|
&& memcmp (iaddr_bytes, &msg->addr, sizeof (msg->addr)))
|
|
skip_packet = TRUE;
|
|
}
|
|
#endif
|
|
#ifdef IP_RECVDSTADDR
|
|
if (GST_IS_IP_RECVDSTADDR_MESSAGE (msgs[i])) {
|
|
GstIPRecvdstaddrMessage *msg = GST_IP_RECVDSTADDR_MESSAGE (msgs[i]);
|
|
|
|
if (sizeof (msg->addr) == iaddr_size
|
|
&& memcmp (iaddr_bytes, &msg->addr, sizeof (msg->addr)))
|
|
skip_packet = TRUE;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
for (i = 0; i < n_msgs; i++) {
|
|
g_object_unref (msgs[i]);
|
|
}
|
|
g_free (msgs);
|
|
|
|
if (skip_packet) {
|
|
GST_DEBUG_OBJECT (udpsrc,
|
|
"Dropping packet for a different multicast address");
|
|
goto retry;
|
|
}
|
|
}
|
|
|
|
gst_buffer_unmap (outbuf, &info);
|
|
gst_memory_unmap (udpsrc->extra_mem, &extra_info);
|
|
|
|
/* If this is the case, the buffer will be freed once unreffed,
|
|
* and the buffer pool will have to reallocate a new one.
|
|
*/
|
|
if (res > udpsrc->mtu) {
|
|
gst_buffer_append_memory (outbuf, udpsrc->extra_mem);
|
|
udpsrc->extra_mem = NULL;
|
|
}
|
|
|
|
offset = udpsrc->skip_first_bytes;
|
|
|
|
if (G_UNLIKELY (offset > 0 && res < offset))
|
|
goto skip_error;
|
|
|
|
gst_buffer_resize (outbuf, offset, res - offset);
|
|
|
|
/* use buffer metadata so receivers can also track the address */
|
|
if (saddr) {
|
|
gst_buffer_add_net_address_meta (outbuf, saddr);
|
|
g_object_unref (saddr);
|
|
saddr = NULL;
|
|
}
|
|
|
|
GST_LOG_OBJECT (udpsrc, "read packet of %d bytes", (int) res);
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
/* ERRORS */
|
|
buffer_map_error:
|
|
{
|
|
GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
|
|
("Failed to map memory"));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
memory_map_error:
|
|
{
|
|
gst_buffer_unmap (outbuf, &info);
|
|
GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
|
|
("Failed to map memory"));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
select_error:
|
|
{
|
|
gst_buffer_unmap (outbuf, &info);
|
|
gst_memory_unmap (udpsrc->extra_mem, &extra_info);
|
|
GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
|
|
("select error: %s", err->message));
|
|
g_clear_error (&err);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
stopped:
|
|
{
|
|
gst_buffer_unmap (outbuf, &info);
|
|
gst_memory_unmap (udpsrc->extra_mem, &extra_info);
|
|
GST_DEBUG ("stop called");
|
|
g_clear_error (&err);
|
|
return GST_FLOW_FLUSHING;
|
|
}
|
|
receive_error:
|
|
{
|
|
gst_buffer_unmap (outbuf, &info);
|
|
gst_memory_unmap (udpsrc->extra_mem, &extra_info);
|
|
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY) ||
|
|
g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
|
|
g_clear_error (&err);
|
|
return GST_FLOW_FLUSHING;
|
|
} else {
|
|
GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
|
|
("receive error %" G_GSSIZE_FORMAT ": %s", res, err->message));
|
|
g_clear_error (&err);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
skip_error:
|
|
{
|
|
GST_ELEMENT_ERROR (udpsrc, STREAM, DECODE, (NULL),
|
|
("UDP buffer to small to skip header"));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_udpsrc_set_uri (GstUDPSrc * src, const gchar * uri, GError ** error)
|
|
{
|
|
gchar *address;
|
|
guint16 port;
|
|
|
|
if (!gst_udp_parse_uri (uri, &address, &port))
|
|
goto wrong_uri;
|
|
|
|
if (port == (guint16) - 1)
|
|
port = UDP_DEFAULT_PORT;
|
|
|
|
g_free (src->address);
|
|
src->address = address;
|
|
src->port = port;
|
|
|
|
g_free (src->uri);
|
|
src->uri = g_strdup (uri);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
wrong_uri:
|
|
{
|
|
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
|
|
("error parsing uri %s", uri));
|
|
g_set_error_literal (error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
|
|
"Could not parse UDP URI");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_udpsrc_set_property (GObject * object, guint prop_id, const GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstUDPSrc *udpsrc = GST_UDPSRC (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_BUFFER_SIZE:
|
|
udpsrc->buffer_size = g_value_get_int (value);
|
|
break;
|
|
case PROP_PORT:
|
|
udpsrc->port = g_value_get_int (value);
|
|
g_free (udpsrc->uri);
|
|
udpsrc->uri =
|
|
g_strdup_printf ("udp://%s:%u", udpsrc->address, udpsrc->port);
|
|
break;
|
|
case PROP_MULTICAST_GROUP:
|
|
case PROP_ADDRESS:
|
|
{
|
|
const gchar *group;
|
|
|
|
g_free (udpsrc->address);
|
|
if ((group = g_value_get_string (value)))
|
|
udpsrc->address = g_strdup (group);
|
|
else
|
|
udpsrc->address = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
|
|
|
|
g_free (udpsrc->uri);
|
|
udpsrc->uri =
|
|
g_strdup_printf ("udp://%s:%u", udpsrc->address, udpsrc->port);
|
|
break;
|
|
}
|
|
case PROP_MULTICAST_IFACE:
|
|
g_free (udpsrc->multi_iface);
|
|
|
|
if (g_value_get_string (value) == NULL)
|
|
udpsrc->multi_iface = g_strdup (UDP_DEFAULT_MULTICAST_IFACE);
|
|
else
|
|
udpsrc->multi_iface = g_value_dup_string (value);
|
|
break;
|
|
case PROP_URI:
|
|
gst_udpsrc_set_uri (udpsrc, g_value_get_string (value), NULL);
|
|
break;
|
|
case PROP_CAPS:
|
|
{
|
|
const GstCaps *new_caps_val = gst_value_get_caps (value);
|
|
GstCaps *new_caps;
|
|
GstCaps *old_caps;
|
|
|
|
if (new_caps_val == NULL) {
|
|
new_caps = gst_caps_new_any ();
|
|
} else {
|
|
new_caps = gst_caps_copy (new_caps_val);
|
|
}
|
|
|
|
GST_OBJECT_LOCK (udpsrc);
|
|
old_caps = udpsrc->caps;
|
|
udpsrc->caps = new_caps;
|
|
GST_OBJECT_UNLOCK (udpsrc);
|
|
if (old_caps)
|
|
gst_caps_unref (old_caps);
|
|
|
|
gst_pad_mark_reconfigure (GST_BASE_SRC_PAD (udpsrc));
|
|
break;
|
|
}
|
|
case PROP_SOCKET:
|
|
if (udpsrc->socket != NULL && udpsrc->socket != udpsrc->used_socket &&
|
|
udpsrc->close_socket) {
|
|
GError *err = NULL;
|
|
|
|
if (!g_socket_close (udpsrc->socket, &err)) {
|
|
GST_ERROR ("failed to close socket %p: %s", udpsrc->socket,
|
|
err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
}
|
|
if (udpsrc->socket)
|
|
g_object_unref (udpsrc->socket);
|
|
udpsrc->socket = g_value_dup_object (value);
|
|
GST_DEBUG ("setting socket to %p", udpsrc->socket);
|
|
break;
|
|
case PROP_TIMEOUT:
|
|
udpsrc->timeout = g_value_get_uint64 (value);
|
|
break;
|
|
case PROP_SKIP_FIRST_BYTES:
|
|
udpsrc->skip_first_bytes = g_value_get_int (value);
|
|
break;
|
|
case PROP_CLOSE_SOCKET:
|
|
udpsrc->close_socket = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_AUTO_MULTICAST:
|
|
udpsrc->auto_multicast = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_REUSE:
|
|
udpsrc->reuse = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_LOOP:
|
|
udpsrc->loop = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_RETRIEVE_SENDER_ADDRESS:
|
|
udpsrc->retrieve_sender_address = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_MTU:
|
|
udpsrc->mtu = g_value_get_uint (value);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_udpsrc_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstUDPSrc *udpsrc = GST_UDPSRC (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_BUFFER_SIZE:
|
|
g_value_set_int (value, udpsrc->buffer_size);
|
|
break;
|
|
case PROP_PORT:
|
|
g_value_set_int (value, udpsrc->port);
|
|
break;
|
|
case PROP_MULTICAST_GROUP:
|
|
case PROP_ADDRESS:
|
|
g_value_set_string (value, udpsrc->address);
|
|
break;
|
|
case PROP_MULTICAST_IFACE:
|
|
g_value_set_string (value, udpsrc->multi_iface);
|
|
break;
|
|
case PROP_URI:
|
|
g_value_set_string (value, udpsrc->uri);
|
|
break;
|
|
case PROP_CAPS:
|
|
GST_OBJECT_LOCK (udpsrc);
|
|
gst_value_set_caps (value, udpsrc->caps);
|
|
GST_OBJECT_UNLOCK (udpsrc);
|
|
break;
|
|
case PROP_SOCKET:
|
|
g_value_set_object (value, udpsrc->socket);
|
|
break;
|
|
case PROP_TIMEOUT:
|
|
g_value_set_uint64 (value, udpsrc->timeout);
|
|
break;
|
|
case PROP_SKIP_FIRST_BYTES:
|
|
g_value_set_int (value, udpsrc->skip_first_bytes);
|
|
break;
|
|
case PROP_CLOSE_SOCKET:
|
|
g_value_set_boolean (value, udpsrc->close_socket);
|
|
break;
|
|
case PROP_USED_SOCKET:
|
|
g_value_set_object (value, udpsrc->used_socket);
|
|
break;
|
|
case PROP_AUTO_MULTICAST:
|
|
g_value_set_boolean (value, udpsrc->auto_multicast);
|
|
break;
|
|
case PROP_REUSE:
|
|
g_value_set_boolean (value, udpsrc->reuse);
|
|
break;
|
|
case PROP_LOOP:
|
|
g_value_set_boolean (value, udpsrc->loop);
|
|
break;
|
|
case PROP_RETRIEVE_SENDER_ADDRESS:
|
|
g_value_set_boolean (value, udpsrc->retrieve_sender_address);
|
|
break;
|
|
case PROP_MTU:
|
|
g_value_set_uint (value, udpsrc->mtu);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GInetAddress *
|
|
gst_udpsrc_resolve (GstUDPSrc * src, const gchar * address)
|
|
{
|
|
GInetAddress *addr;
|
|
GError *err = NULL;
|
|
GResolver *resolver;
|
|
|
|
addr = g_inet_address_new_from_string (address);
|
|
if (!addr) {
|
|
GList *results;
|
|
|
|
GST_DEBUG_OBJECT (src, "resolving IP address for host %s", address);
|
|
resolver = g_resolver_get_default ();
|
|
results =
|
|
g_resolver_lookup_by_name (resolver, address, src->cancellable, &err);
|
|
if (!results)
|
|
goto name_resolve;
|
|
addr = G_INET_ADDRESS (g_object_ref (results->data));
|
|
|
|
g_resolver_free_addresses (results);
|
|
g_object_unref (resolver);
|
|
}
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
{
|
|
gchar *ip = g_inet_address_to_string (addr);
|
|
|
|
GST_DEBUG_OBJECT (src, "IP address for host %s is %s", address, ip);
|
|
g_free (ip);
|
|
}
|
|
#endif
|
|
|
|
return addr;
|
|
|
|
name_resolve:
|
|
{
|
|
GST_WARNING_OBJECT (src, "Failed to resolve %s: %s", address, err->message);
|
|
g_clear_error (&err);
|
|
g_object_unref (resolver);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* create a socket for sending to remote machine */
|
|
static gboolean
|
|
gst_udpsrc_open (GstUDPSrc * src)
|
|
{
|
|
GInetAddress *addr, *bind_addr;
|
|
GSocketAddress *bind_saddr;
|
|
GError *err = NULL;
|
|
|
|
gst_udpsrc_create_cancellable (src);
|
|
|
|
if (src->socket == NULL) {
|
|
/* need to allocate a socket */
|
|
GST_DEBUG_OBJECT (src, "allocating socket for %s:%d", src->address,
|
|
src->port);
|
|
|
|
addr = gst_udpsrc_resolve (src, src->address);
|
|
if (!addr)
|
|
goto name_resolve;
|
|
|
|
if ((src->used_socket =
|
|
g_socket_new (g_inet_address_get_family (addr),
|
|
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL)
|
|
goto no_socket;
|
|
|
|
src->external_socket = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (src, "got socket %p", src->used_socket);
|
|
|
|
if (src->addr)
|
|
g_object_unref (src->addr);
|
|
src->addr =
|
|
G_INET_SOCKET_ADDRESS (g_inet_socket_address_new (addr, src->port));
|
|
|
|
GST_DEBUG_OBJECT (src, "binding on port %d", src->port);
|
|
|
|
/* For multicast, bind to ANY and join the multicast group later */
|
|
if (g_inet_address_get_is_multicast (addr))
|
|
bind_addr = g_inet_address_new_any (g_inet_address_get_family (addr));
|
|
else
|
|
bind_addr = G_INET_ADDRESS (g_object_ref (addr));
|
|
|
|
g_object_unref (addr);
|
|
|
|
bind_saddr = g_inet_socket_address_new (bind_addr, src->port);
|
|
g_object_unref (bind_addr);
|
|
if (!g_socket_bind (src->used_socket, bind_saddr, src->reuse, &err))
|
|
goto bind_error;
|
|
|
|
g_object_unref (bind_saddr);
|
|
g_socket_set_multicast_loopback (src->used_socket, src->loop);
|
|
} else {
|
|
GInetSocketAddress *local_addr;
|
|
|
|
GST_DEBUG_OBJECT (src, "using provided socket %p", src->socket);
|
|
/* we use the configured socket, try to get some info about it */
|
|
src->used_socket = G_SOCKET (g_object_ref (src->socket));
|
|
src->external_socket = TRUE;
|
|
|
|
local_addr =
|
|
G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
|
|
&err));
|
|
if (!local_addr)
|
|
goto getsockname_error;
|
|
|
|
addr = gst_udpsrc_resolve (src, src->address);
|
|
if (!addr)
|
|
goto name_resolve;
|
|
|
|
/* If bound to ANY and address points to a multicast address, make
|
|
* sure that address is not overridden with ANY but we have the
|
|
* opportunity later to join the multicast address. This ensures that we
|
|
* have the same behaviour as for sockets created by udpsrc */
|
|
if (!src->auto_multicast ||
|
|
!g_inet_address_get_is_any (g_inet_socket_address_get_address
|
|
(local_addr))
|
|
|| !g_inet_address_get_is_multicast (addr)) {
|
|
g_object_unref (addr);
|
|
if (src->addr)
|
|
g_object_unref (src->addr);
|
|
src->addr = local_addr;
|
|
} else {
|
|
g_object_unref (local_addr);
|
|
if (src->addr)
|
|
g_object_unref (src->addr);
|
|
src->addr =
|
|
G_INET_SOCKET_ADDRESS (g_inet_socket_address_new (addr, src->port));
|
|
g_object_unref (addr);
|
|
}
|
|
}
|
|
|
|
{
|
|
gint val = 0;
|
|
|
|
if (src->buffer_size != 0) {
|
|
GError *opt_err = NULL;
|
|
|
|
GST_INFO_OBJECT (src, "setting udp buffer of %d bytes", src->buffer_size);
|
|
/* set buffer size, Note that on Linux this is typically limited to a
|
|
* maximum of around 100K. Also a minimum of 128 bytes is required on
|
|
* Linux. */
|
|
if (!g_socket_set_option (src->used_socket, SOL_SOCKET, SO_RCVBUF,
|
|
src->buffer_size, &opt_err)) {
|
|
GST_ELEMENT_WARNING (src, RESOURCE, SETTINGS, (NULL),
|
|
("Could not create a buffer of requested %d bytes: %s",
|
|
src->buffer_size, opt_err->message));
|
|
g_error_free (opt_err);
|
|
opt_err = NULL;
|
|
}
|
|
}
|
|
|
|
/* read the value of the receive buffer. Note that on linux this returns
|
|
* 2x the value we set because the kernel allocates extra memory for
|
|
* metadata. The default on Linux is about 100K (which is about 50K
|
|
* without metadata) */
|
|
if (g_socket_get_option (src->used_socket, SOL_SOCKET, SO_RCVBUF, &val,
|
|
NULL)) {
|
|
GST_INFO_OBJECT (src, "have udp buffer of %d bytes", val);
|
|
} else {
|
|
GST_DEBUG_OBJECT (src, "could not get udp buffer size");
|
|
}
|
|
}
|
|
|
|
g_socket_set_broadcast (src->used_socket, TRUE);
|
|
|
|
if (src->auto_multicast
|
|
&&
|
|
g_inet_address_get_is_multicast (g_inet_socket_address_get_address
|
|
(src->addr))) {
|
|
|
|
if (src->multi_iface) {
|
|
GStrv multi_ifaces = g_strsplit (src->multi_iface, ",", -1);
|
|
gchar **ifaces = multi_ifaces;
|
|
while (*ifaces) {
|
|
g_strstrip (*ifaces);
|
|
GST_DEBUG_OBJECT (src, "joining multicast group %s interface %s",
|
|
src->address, *ifaces);
|
|
if (!g_socket_join_multicast_group (src->used_socket,
|
|
g_inet_socket_address_get_address (src->addr),
|
|
FALSE, *ifaces, &err)) {
|
|
g_strfreev (multi_ifaces);
|
|
goto membership;
|
|
}
|
|
|
|
ifaces++;
|
|
}
|
|
g_strfreev (multi_ifaces);
|
|
} else {
|
|
GST_DEBUG_OBJECT (src, "joining multicast group %s", src->address);
|
|
if (!g_socket_join_multicast_group (src->used_socket,
|
|
g_inet_socket_address_get_address (src->addr), FALSE, NULL, &err))
|
|
goto membership;
|
|
}
|
|
|
|
if (g_inet_address_get_family (g_inet_socket_address_get_address
|
|
(src->addr)) == G_SOCKET_FAMILY_IPV4) {
|
|
#if defined(IP_MULTICAST_ALL)
|
|
if (!g_socket_set_option (src->used_socket, IPPROTO_IP, IP_MULTICAST_ALL,
|
|
0, &err)) {
|
|
GST_WARNING_OBJECT (src, "Failed to disable IP_MULTICAST_ALL: %s",
|
|
err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
#elif defined(IP_PKTINFO)
|
|
if (!g_socket_set_option (src->used_socket, IPPROTO_IP, IP_PKTINFO, TRUE,
|
|
&err)) {
|
|
GST_WARNING_OBJECT (src, "Failed to enable IP_PKTINFO: %s",
|
|
err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
#elif defined(IP_RECVDSTADDR)
|
|
if (!g_socket_set_option (src->used_socket, IPPROTO_IP, IP_RECVDSTADDR,
|
|
TRUE, &err)) {
|
|
GST_WARNING_OBJECT (src, "Failed to enable IP_RECVDSTADDR: %s",
|
|
err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
#else
|
|
#pragma message("No API available for getting IPv4 destination address")
|
|
GST_WARNING_OBJECT (src, "No API available for getting IPv4 destination "
|
|
"address, will receive packets for every destination to our port");
|
|
#endif
|
|
} else
|
|
if (g_inet_address_get_family (g_inet_socket_address_get_address
|
|
(src->addr)) == G_SOCKET_FAMILY_IPV6) {
|
|
#ifdef IPV6_PKTINFO
|
|
#ifdef IPV6_RECVPKTINFO
|
|
if (!g_socket_set_option (src->used_socket, IPPROTO_IPV6,
|
|
IPV6_RECVPKTINFO, TRUE, &err)) {
|
|
#else
|
|
if (!g_socket_set_option (src->used_socket, IPPROTO_IPV6, IPV6_PKTINFO,
|
|
TRUE, &err)) {
|
|
#endif
|
|
GST_WARNING_OBJECT (src, "Failed to enable IPV6_PKTINFO: %s",
|
|
err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
#else
|
|
#pragma message("No API available for getting IPv6 destination address")
|
|
GST_WARNING_OBJECT (src, "No API available for getting IPv6 destination "
|
|
"address, will receive packets for every destination to our port");
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* NOTE: sockaddr_in.sin_port works for ipv4 and ipv6 because sin_port
|
|
* follows ss_family on both */
|
|
{
|
|
GInetSocketAddress *addr;
|
|
guint16 port;
|
|
|
|
addr =
|
|
G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
|
|
&err));
|
|
if (!addr)
|
|
goto getsockname_error;
|
|
|
|
port = g_inet_socket_address_get_port (addr);
|
|
GST_DEBUG_OBJECT (src, "bound, on port %d", port);
|
|
if (port != src->port) {
|
|
src->port = port;
|
|
GST_DEBUG_OBJECT (src, "notifying port %d", port);
|
|
g_object_notify (G_OBJECT (src), "port");
|
|
}
|
|
g_object_unref (addr);
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
name_resolve:
|
|
{
|
|
return FALSE;
|
|
}
|
|
no_socket:
|
|
{
|
|
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
|
|
("no socket error: %s", err->message));
|
|
g_clear_error (&err);
|
|
g_object_unref (addr);
|
|
return FALSE;
|
|
}
|
|
bind_error:
|
|
{
|
|
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
|
|
("bind failed: %s", err->message));
|
|
g_clear_error (&err);
|
|
g_object_unref (bind_saddr);
|
|
gst_udpsrc_close (src);
|
|
return FALSE;
|
|
}
|
|
membership:
|
|
{
|
|
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
|
|
("could not add membership: %s", err->message));
|
|
g_clear_error (&err);
|
|
gst_udpsrc_close (src);
|
|
return FALSE;
|
|
}
|
|
getsockname_error:
|
|
{
|
|
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
|
|
("getsockname failed: %s", err->message));
|
|
g_clear_error (&err);
|
|
gst_udpsrc_close (src);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_udpsrc_unlock (GstBaseSrc * bsrc)
|
|
{
|
|
GstUDPSrc *src;
|
|
|
|
src = GST_UDPSRC (bsrc);
|
|
|
|
GST_LOG_OBJECT (src, "Flushing");
|
|
g_cancellable_cancel (src->cancellable);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_udpsrc_unlock_stop (GstBaseSrc * bsrc)
|
|
{
|
|
GstUDPSrc *src;
|
|
|
|
src = GST_UDPSRC (bsrc);
|
|
|
|
GST_LOG_OBJECT (src, "No longer flushing");
|
|
|
|
gst_udpsrc_free_cancellable (src);
|
|
gst_udpsrc_create_cancellable (src);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_udpsrc_close (GstUDPSrc * src)
|
|
{
|
|
GST_DEBUG ("closing sockets");
|
|
|
|
if (src->used_socket) {
|
|
if (src->auto_multicast
|
|
&&
|
|
g_inet_address_get_is_multicast (g_inet_socket_address_get_address
|
|
(src->addr))) {
|
|
GError *err = NULL;
|
|
|
|
if (src->multi_iface) {
|
|
GStrv multi_ifaces = g_strsplit (src->multi_iface, ",", -1);
|
|
gchar **ifaces = multi_ifaces;
|
|
while (*ifaces) {
|
|
g_strstrip (*ifaces);
|
|
GST_DEBUG_OBJECT (src, "leaving multicast group %s interface %s",
|
|
src->address, *ifaces);
|
|
if (!g_socket_leave_multicast_group (src->used_socket,
|
|
g_inet_socket_address_get_address (src->addr),
|
|
FALSE, *ifaces, &err)) {
|
|
GST_ERROR_OBJECT (src, "Failed to leave multicast group: %s",
|
|
err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
ifaces++;
|
|
}
|
|
g_strfreev (multi_ifaces);
|
|
|
|
} else {
|
|
GST_DEBUG_OBJECT (src, "leaving multicast group %s", src->address);
|
|
if (!g_socket_leave_multicast_group (src->used_socket,
|
|
g_inet_socket_address_get_address (src->addr), FALSE,
|
|
NULL, &err)) {
|
|
GST_ERROR_OBJECT (src, "Failed to leave multicast group: %s",
|
|
err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (src->close_socket || !src->external_socket) {
|
|
GError *err = NULL;
|
|
if (!g_socket_close (src->used_socket, &err)) {
|
|
GST_ERROR_OBJECT (src, "Failed to close socket: %s", err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
}
|
|
|
|
g_object_unref (src->used_socket);
|
|
src->used_socket = NULL;
|
|
g_object_unref (src->addr);
|
|
src->addr = NULL;
|
|
}
|
|
|
|
gst_udpsrc_free_cancellable (src);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static GstStateChangeReturn
|
|
gst_udpsrc_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstUDPSrc *src;
|
|
GstStateChangeReturn result;
|
|
|
|
src = GST_UDPSRC (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (!gst_udpsrc_open (src))
|
|
goto open_failed;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if ((result =
|
|
GST_ELEMENT_CLASS (parent_class)->change_state (element,
|
|
transition)) == GST_STATE_CHANGE_FAILURE)
|
|
goto failure;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
gst_udpsrc_close (src);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return result;
|
|
/* ERRORS */
|
|
open_failed:
|
|
{
|
|
GST_DEBUG_OBJECT (src, "failed to open socket");
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
failure:
|
|
{
|
|
GST_DEBUG_OBJECT (src, "parent failed state change");
|
|
return result;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
/*** GSTURIHANDLER INTERFACE *************************************************/
|
|
|
|
static GstURIType
|
|
gst_udpsrc_uri_get_type (GType type)
|
|
{
|
|
return GST_URI_SRC;
|
|
}
|
|
|
|
static const gchar *const *
|
|
gst_udpsrc_uri_get_protocols (GType type)
|
|
{
|
|
static const gchar *protocols[] = { "udp", NULL };
|
|
|
|
return protocols;
|
|
}
|
|
|
|
static gchar *
|
|
gst_udpsrc_uri_get_uri (GstURIHandler * handler)
|
|
{
|
|
GstUDPSrc *src = GST_UDPSRC (handler);
|
|
|
|
return g_strdup (src->uri);
|
|
}
|
|
|
|
static gboolean
|
|
gst_udpsrc_uri_set_uri (GstURIHandler * handler, const gchar * uri,
|
|
GError ** error)
|
|
{
|
|
return gst_udpsrc_set_uri (GST_UDPSRC (handler), uri, error);
|
|
}
|
|
|
|
static void
|
|
gst_udpsrc_uri_handler_init (gpointer g_iface, gpointer iface_data)
|
|
{
|
|
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
|
|
|
|
iface->get_type = gst_udpsrc_uri_get_type;
|
|
iface->get_protocols = gst_udpsrc_uri_get_protocols;
|
|
iface->get_uri = gst_udpsrc_uri_get_uri;
|
|
iface->set_uri = gst_udpsrc_uri_set_uri;
|
|
}
|