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32bd981303
Make it possible to set the timeout after we went to the READY state by using the timeout when checking the condition. This also makes it possible to set the timeout with a higher granularity than seconds.
1045 lines
32 KiB
C
1045 lines
32 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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*
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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:sockfd
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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 usefull
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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 upstream 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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* </para>
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* <para>
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* A custom file descriptor can be configured with the
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* #GstUDPSrc:sockfd property. The socket will be closed when setting the
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* element to READY by default. This behaviour can be
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* overriden with the #GstUDPSrc:closefd property, in which case the application
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* 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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* Last reviewed on 2007-09-20 (0.10.7)
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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 "gstudpsrc.h"
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#include <gst/net/gstnetaddressmeta.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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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,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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#define UDP_DEFAULT_PORT 5004
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#define UDP_DEFAULT_MULTICAST_GROUP "0.0.0.0"
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#define UDP_DEFAULT_MULTICAST_IFACE NULL
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#define UDP_DEFAULT_URI "udp://"UDP_DEFAULT_MULTICAST_GROUP":"G_STRINGIFY(UDP_DEFAULT_PORT)
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#define UDP_DEFAULT_CAPS NULL
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#define UDP_DEFAULT_SOCKET NULL
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#define UDP_DEFAULT_BUFFER_SIZE 0
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#define UDP_DEFAULT_TIMEOUT 0
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#define UDP_DEFAULT_SKIP_FIRST_BYTES 0
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#define UDP_DEFAULT_CLOSE_SOCKET TRUE
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#define UDP_DEFAULT_USED_SOCKET NULL
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#define UDP_DEFAULT_AUTO_MULTICAST TRUE
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#define UDP_DEFAULT_REUSE TRUE
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enum
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{
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PROP_0,
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PROP_PORT,
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PROP_MULTICAST_GROUP,
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PROP_MULTICAST_IFACE,
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PROP_URI,
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PROP_CAPS,
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PROP_SOCKET,
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PROP_BUFFER_SIZE,
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PROP_TIMEOUT,
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PROP_SKIP_FIRST_BYTES,
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PROP_CLOSE_SOCKET,
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PROP_USED_SOCKET,
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PROP_AUTO_MULTICAST,
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PROP_REUSE,
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PROP_LAST
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};
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static void gst_udpsrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
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static GstCaps *gst_udpsrc_getcaps (GstBaseSrc * src, GstCaps * filter);
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static GstFlowReturn gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf);
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static gboolean gst_udpsrc_start (GstBaseSrc * bsrc);
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static gboolean gst_udpsrc_stop (GstBaseSrc * bsrc);
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static gboolean gst_udpsrc_unlock (GstBaseSrc * bsrc);
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static gboolean gst_udpsrc_unlock_stop (GstBaseSrc * bsrc);
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static void gst_udpsrc_finalize (GObject * object);
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static void gst_udpsrc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_udpsrc_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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#define gst_udpsrc_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstUDPSrc, gst_udpsrc, GST_TYPE_PUSH_SRC,
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G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_udpsrc_uri_handler_init));
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static void
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gst_udpsrc_class_init (GstUDPSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseSrcClass *gstbasesrc_class;
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GstPushSrcClass *gstpushsrc_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasesrc_class = (GstBaseSrcClass *) klass;
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gstpushsrc_class = (GstPushSrcClass *) klass;
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GST_DEBUG_CATEGORY_INIT (udpsrc_debug, "udpsrc", 0, "UDP src");
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gobject_class->set_property = gst_udpsrc_set_property;
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gobject_class->get_property = gst_udpsrc_get_property;
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gobject_class->finalize = gst_udpsrc_finalize;
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT,
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g_param_spec_int ("port", "Port",
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"The port to receive the packets from, 0=allocate", 0, G_MAXUINT16,
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UDP_DEFAULT_PORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MULTICAST_GROUP,
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g_param_spec_string ("multicast-group", "Multicast Group",
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"The Address of multicast group to join", UDP_DEFAULT_MULTICAST_GROUP,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MULTICAST_IFACE,
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g_param_spec_string ("multicast-iface", "Multicast Interface",
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"The network interface on which to join the multicast group",
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UDP_DEFAULT_MULTICAST_IFACE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_URI,
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g_param_spec_string ("uri", "URI",
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"URI in the form of udp://multicast_group:port", UDP_DEFAULT_URI,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CAPS,
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g_param_spec_boxed ("caps", "Caps",
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"The caps of the source pad", GST_TYPE_CAPS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SOCKET,
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g_param_spec_object ("socket", "Socket",
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"Socket to use for UDP reception. (NULL == allocate)",
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G_TYPE_SOCKET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BUFFER_SIZE,
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g_param_spec_int ("buffer-size", "Buffer Size",
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"Size of the kernel receive buffer in bytes, 0=default", 0, G_MAXINT,
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UDP_DEFAULT_BUFFER_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TIMEOUT,
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g_param_spec_uint64 ("timeout", "Timeout",
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"Post a message after timeout nanoseconds (0 = disabled)", 0,
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G_MAXUINT64, UDP_DEFAULT_TIMEOUT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass),
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PROP_SKIP_FIRST_BYTES, g_param_spec_int ("skip-first-bytes",
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"Skip first bytes", "number of bytes to skip for each udp packet", 0,
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G_MAXINT, UDP_DEFAULT_SKIP_FIRST_BYTES,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CLOSE_SOCKET,
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g_param_spec_boolean ("close-socket", "Close socket",
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"Close socket if passed as property on state change",
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UDP_DEFAULT_CLOSE_SOCKET,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_USED_SOCKET,
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g_param_spec_object ("used-socket", "Socket Handle",
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"Socket currently in use for UDP reception. (NULL = no socket)",
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G_TYPE_SOCKET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_AUTO_MULTICAST,
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g_param_spec_boolean ("auto-multicast", "Auto Multicast",
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"Automatically join/leave multicast groups",
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UDP_DEFAULT_AUTO_MULTICAST,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_REUSE,
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g_param_spec_boolean ("reuse", "Reuse", "Enable reuse of the port",
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UDP_DEFAULT_REUSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&src_template));
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gst_element_class_set_static_metadata (gstelement_class,
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"UDP packet receiver", "Source/Network",
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"Receive data over the network via UDP",
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"Wim Taymans <wim@fluendo.com>, "
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"Thijs Vermeir <thijs.vermeir@barco.com>");
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gstbasesrc_class->start = gst_udpsrc_start;
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gstbasesrc_class->stop = gst_udpsrc_stop;
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gstbasesrc_class->unlock = gst_udpsrc_unlock;
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gstbasesrc_class->unlock_stop = gst_udpsrc_unlock_stop;
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gstbasesrc_class->get_caps = gst_udpsrc_getcaps;
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gstpushsrc_class->create = gst_udpsrc_create;
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}
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static void
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gst_udpsrc_init (GstUDPSrc * udpsrc)
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{
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udpsrc->uri =
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g_strdup_printf ("udp://%s:%u", UDP_DEFAULT_MULTICAST_GROUP,
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UDP_DEFAULT_PORT);
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udpsrc->host = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
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udpsrc->port = UDP_DEFAULT_PORT;
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udpsrc->socket = UDP_DEFAULT_SOCKET;
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udpsrc->multi_iface = g_strdup (UDP_DEFAULT_MULTICAST_IFACE);
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udpsrc->buffer_size = UDP_DEFAULT_BUFFER_SIZE;
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udpsrc->timeout = UDP_DEFAULT_TIMEOUT;
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udpsrc->skip_first_bytes = UDP_DEFAULT_SKIP_FIRST_BYTES;
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udpsrc->close_socket = UDP_DEFAULT_CLOSE_SOCKET;
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udpsrc->external_socket = (udpsrc->socket != NULL);
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udpsrc->auto_multicast = UDP_DEFAULT_AUTO_MULTICAST;
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udpsrc->used_socket = UDP_DEFAULT_USED_SOCKET;
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udpsrc->reuse = UDP_DEFAULT_REUSE;
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udpsrc->cancellable = g_cancellable_new ();
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/* configure basesrc to be a live source */
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gst_base_src_set_live (GST_BASE_SRC (udpsrc), TRUE);
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/* make basesrc output a segment in time */
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gst_base_src_set_format (GST_BASE_SRC (udpsrc), GST_FORMAT_TIME);
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/* make basesrc set timestamps on outgoing buffers based on the running_time
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* when they were captured */
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gst_base_src_set_do_timestamp (GST_BASE_SRC (udpsrc), TRUE);
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}
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static void
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gst_udpsrc_finalize (GObject * object)
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{
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GstUDPSrc *udpsrc;
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udpsrc = GST_UDPSRC (object);
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if (udpsrc->caps)
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gst_caps_unref (udpsrc->caps);
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udpsrc->caps = NULL;
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g_free (udpsrc->multi_iface);
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udpsrc->multi_iface = NULL;
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g_free (udpsrc->uri);
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udpsrc->uri = NULL;
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g_free (udpsrc->host);
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udpsrc->host = NULL;
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if (udpsrc->socket)
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g_object_unref (udpsrc->socket);
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udpsrc->socket = NULL;
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if (udpsrc->used_socket)
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g_object_unref (udpsrc->used_socket);
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udpsrc->used_socket = NULL;
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if (udpsrc->cancellable)
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g_object_unref (udpsrc->cancellable);
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udpsrc->cancellable = NULL;
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstCaps *
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gst_udpsrc_getcaps (GstBaseSrc * src, GstCaps * filter)
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{
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GstUDPSrc *udpsrc;
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udpsrc = GST_UDPSRC (src);
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if (udpsrc->caps) {
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return (filter) ? gst_caps_intersect_full (filter, udpsrc->caps,
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GST_CAPS_INTERSECT_FIRST) : gst_caps_ref (udpsrc->caps);
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} else {
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return (filter) ? gst_caps_ref (filter) : gst_caps_new_any ();
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}
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}
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|
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static GstFlowReturn
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gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf)
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{
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GstFlowReturn ret;
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GstUDPSrc *udpsrc;
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GstBuffer *outbuf;
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GstMapInfo info;
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GSocketAddress *saddr = NULL;
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gsize offset;
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gssize readsize;
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gssize res;
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gboolean try_again;
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GError *err = NULL;
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udpsrc = GST_UDPSRC_CAST (psrc);
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retry:
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/* quick check, avoid going in select when we already have data */
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readsize = g_socket_get_available_bytes (udpsrc->used_socket);
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if (readsize > 0)
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goto no_select;
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do {
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gint64 timeout;
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try_again = FALSE;
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if (udpsrc->timeout)
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timeout = udpsrc->timeout / 1000;
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else
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timeout = -1;
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GST_LOG_OBJECT (udpsrc, "doing select, timeout %" G_GUINT64_FORMAT,
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timeout);
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if (!g_socket_condition_timed_wait (udpsrc->used_socket, G_IO_IN | G_IO_PRI,
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timeout, udpsrc->cancellable, &err)) {
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY)
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|| g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
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goto stopped;
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} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
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g_clear_error (&err);
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/* timeout, post element message */
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gst_element_post_message (GST_ELEMENT_CAST (udpsrc),
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gst_message_new_element (GST_OBJECT_CAST (udpsrc),
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gst_structure_new ("GstUDPSrcTimeout",
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"timeout", G_TYPE_UINT64, udpsrc->timeout, NULL)));
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} else {
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goto select_error;
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}
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try_again = TRUE;
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}
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} while (G_UNLIKELY (try_again));
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|
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/* ask how much is available for reading on the socket, this should be exactly
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* one UDP packet. We will check the return value, though, because in some
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* case it can return 0 and we don't want a 0 sized buffer. */
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readsize = g_socket_get_available_bytes (udpsrc->used_socket);
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if (G_UNLIKELY (readsize < 0))
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goto get_available_error;
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|
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/* If we get here and the readsize is zero, then either select was woken up
|
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* by activity that is not a read, or a poll error occurred, or a UDP packet
|
|
* was received that has no data. Since we cannot identify which case it is,
|
|
* we handle all of them. This could possibly lead to a UDP packet getting
|
|
* lost, but since UDP is not reliable, we can accept this. */
|
|
if (G_UNLIKELY (!readsize)) {
|
|
/* try to read a packet (and it will be ignored),
|
|
* in case a packet with no data arrived */
|
|
res =
|
|
g_socket_receive_from (udpsrc->used_socket, NULL, NULL,
|
|
0, udpsrc->cancellable, &err);
|
|
if (G_UNLIKELY (res < 0))
|
|
goto receive_error;
|
|
|
|
/* poll again */
|
|
goto retry;
|
|
}
|
|
|
|
no_select:
|
|
GST_LOG_OBJECT (udpsrc, "ioctl says %d bytes available", (int) readsize);
|
|
|
|
ret = GST_BASE_SRC_CLASS (parent_class)->alloc (GST_BASE_SRC_CAST (udpsrc),
|
|
-1, readsize, &outbuf);
|
|
if (ret != GST_FLOW_OK)
|
|
goto alloc_failed;
|
|
|
|
gst_buffer_map (outbuf, &info, GST_MAP_WRITE);
|
|
offset = 0;
|
|
|
|
if (saddr)
|
|
g_object_unref (saddr);
|
|
saddr = NULL;
|
|
|
|
res =
|
|
g_socket_receive_from (udpsrc->used_socket, &saddr, (gchar *) info.data,
|
|
info.size, udpsrc->cancellable, &err);
|
|
|
|
if (G_UNLIKELY (res < 0)) {
|
|
/* EHOSTUNREACH for a UDP socket means that a packet sent with udpsink
|
|
* generated a "port unreachable" ICMP response. We ignore that and try
|
|
* again. */
|
|
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_HOST_UNREACHABLE)) {
|
|
gst_buffer_unmap (outbuf, &info);
|
|
gst_buffer_unref (outbuf);
|
|
outbuf = NULL;
|
|
g_clear_error (&err);
|
|
goto retry;
|
|
}
|
|
goto receive_error;
|
|
}
|
|
|
|
/* patch offset and size when stripping off the headers */
|
|
if (G_UNLIKELY (udpsrc->skip_first_bytes != 0)) {
|
|
if (G_UNLIKELY (readsize < udpsrc->skip_first_bytes))
|
|
goto skip_error;
|
|
|
|
offset += udpsrc->skip_first_bytes;
|
|
res -= udpsrc->skip_first_bytes;
|
|
}
|
|
|
|
gst_buffer_unmap (outbuf, &info);
|
|
gst_buffer_resize (outbuf, offset, res);
|
|
|
|
/* 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 %d bytes", (int) readsize);
|
|
|
|
*buf = GST_BUFFER_CAST (outbuf);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
select_error:
|
|
{
|
|
GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
|
|
("select error: %s", err->message));
|
|
g_clear_error (&err);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
stopped:
|
|
{
|
|
GST_DEBUG ("stop called");
|
|
g_clear_error (&err);
|
|
return GST_FLOW_FLUSHING;
|
|
}
|
|
get_available_error:
|
|
{
|
|
GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
|
|
("get available bytes failed"));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
alloc_failed:
|
|
{
|
|
GST_DEBUG ("Allocation failed");
|
|
return ret;
|
|
}
|
|
receive_error:
|
|
{
|
|
gst_buffer_unmap (outbuf, &info);
|
|
gst_buffer_unref (outbuf);
|
|
|
|
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_buffer_unmap (outbuf, &info);
|
|
gst_buffer_unref (outbuf);
|
|
|
|
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 *host;
|
|
guint16 port;
|
|
|
|
if (!gst_udp_parse_uri (uri, &host, &port))
|
|
goto wrong_uri;
|
|
|
|
if (port == (guint16) - 1)
|
|
port = UDP_DEFAULT_PORT;
|
|
|
|
g_free (src->host);
|
|
src->host = host;
|
|
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->host, udpsrc->port);
|
|
break;
|
|
case PROP_MULTICAST_GROUP:
|
|
{
|
|
const gchar *group;
|
|
|
|
g_free (udpsrc->host);
|
|
if ((group = g_value_get_string (value)))
|
|
udpsrc->host = g_strdup (group);
|
|
else
|
|
udpsrc->host = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
|
|
|
|
g_free (udpsrc->uri);
|
|
udpsrc->uri = g_strdup_printf ("udp://%s:%u", udpsrc->host, 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);
|
|
}
|
|
|
|
old_caps = udpsrc->caps;
|
|
udpsrc->caps = new_caps;
|
|
if (old_caps)
|
|
gst_caps_unref (old_caps);
|
|
gst_pad_set_caps (GST_BASE_SRC (udpsrc)->srcpad, new_caps);
|
|
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;
|
|
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:
|
|
g_value_set_string (value, udpsrc->host);
|
|
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_value_set_caps (value, udpsrc->caps);
|
|
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;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* create a socket for sending to remote machine */
|
|
static gboolean
|
|
gst_udpsrc_start (GstBaseSrc * bsrc)
|
|
{
|
|
GstUDPSrc *src;
|
|
GInetAddress *addr, *bind_addr;
|
|
GSocketAddress *bind_saddr;
|
|
GResolver *resolver;
|
|
GError *err = NULL;
|
|
|
|
src = GST_UDPSRC (bsrc);
|
|
|
|
if (src->socket == NULL) {
|
|
/* need to allocate a socket */
|
|
GST_DEBUG_OBJECT (src, "allocating socket for %s:%d", src->host, src->port);
|
|
|
|
addr = g_inet_address_new_from_string (src->host);
|
|
if (!addr) {
|
|
GList *results;
|
|
|
|
GST_DEBUG_OBJECT (src, "resolving IP address for host %s", src->host);
|
|
resolver = g_resolver_get_default ();
|
|
results =
|
|
g_resolver_lookup_by_name (resolver, src->host, 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", src->host, ip);
|
|
g_free (ip);
|
|
}
|
|
#endif
|
|
|
|
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);
|
|
|
|
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);
|
|
} else {
|
|
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;
|
|
|
|
if (src->addr)
|
|
g_object_unref (src->addr);
|
|
src->addr =
|
|
G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
|
|
&err));
|
|
if (!src->addr)
|
|
goto getsockname_error;
|
|
}
|
|
|
|
#ifdef SO_RCVBUF
|
|
{
|
|
gint rcvsize, ret;
|
|
socklen_t len;
|
|
|
|
len = sizeof (rcvsize);
|
|
if (src->buffer_size != 0) {
|
|
rcvsize = src->buffer_size;
|
|
|
|
GST_DEBUG_OBJECT (src, "setting udp buffer of %d bytes", rcvsize);
|
|
/* 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. */
|
|
ret =
|
|
setsockopt (g_socket_get_fd (src->used_socket), SOL_SOCKET, SO_RCVBUF,
|
|
(void *) &rcvsize, len);
|
|
if (ret != 0) {
|
|
GST_ELEMENT_WARNING (src, RESOURCE, SETTINGS, (NULL),
|
|
("Could not create a buffer of requested %d bytes, %d: %s (%d)",
|
|
rcvsize, ret, g_strerror (errno), errno));
|
|
}
|
|
}
|
|
|
|
/* 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) */
|
|
ret =
|
|
getsockopt (g_socket_get_fd (src->used_socket), SOL_SOCKET, SO_RCVBUF,
|
|
(void *) &rcvsize, &len);
|
|
if (ret == 0)
|
|
GST_DEBUG_OBJECT (src, "have udp buffer of %d bytes", rcvsize);
|
|
else
|
|
GST_DEBUG_OBJECT (src, "could not get udp buffer size");
|
|
}
|
|
#endif
|
|
|
|
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))) {
|
|
GST_DEBUG_OBJECT (src, "joining multicast group %s", src->host);
|
|
if (!g_socket_join_multicast_group (src->used_socket,
|
|
g_inet_socket_address_get_address (src->addr),
|
|
FALSE, src->multi_iface, &err))
|
|
goto membership;
|
|
}
|
|
|
|
/* 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:
|
|
{
|
|
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
|
|
("Name resolval failed: %s", err->message));
|
|
g_clear_error (&err);
|
|
g_object_unref (resolver);
|
|
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_stop (GST_BASE_SRC (src));
|
|
return FALSE;
|
|
}
|
|
membership:
|
|
{
|
|
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
|
|
("could add membership: %s", err->message));
|
|
g_clear_error (&err);
|
|
gst_udpsrc_stop (GST_BASE_SRC (src));
|
|
return FALSE;
|
|
}
|
|
getsockname_error:
|
|
{
|
|
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
|
|
("getsockname failed: %s", err->message));
|
|
g_clear_error (&err);
|
|
gst_udpsrc_stop (GST_BASE_SRC (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");
|
|
g_cancellable_reset (src->cancellable);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_udpsrc_stop (GstBaseSrc * bsrc)
|
|
{
|
|
GstUDPSrc *src;
|
|
|
|
src = GST_UDPSRC (bsrc);
|
|
|
|
GST_DEBUG ("stopping, 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;
|
|
|
|
GST_DEBUG_OBJECT (src, "leaving multicast group %s", src->host);
|
|
|
|
if (!g_socket_leave_multicast_group (src->used_socket,
|
|
g_inet_socket_address_get_address (src->addr), FALSE,
|
|
src->multi_iface, &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;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*** 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;
|
|
}
|