2 * Copyright (C) <2005> Wim Taymans <wim@fluendo.com>
3 * Copyright (C) <2005> Nokia Corporation <kai.vehmanen@nokia.com>
4 * Copyright (C) <2012> Collabora Ltd.
5 * Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
24 * SECTION:element-udpsrc
25 * @see_also: udpsink, multifdsink
27 * udpsrc is a network source that reads UDP packets from the network.
28 * It can be combined with RTP depayloaders to implement RTP streaming.
30 * The udpsrc element supports automatic port allocation by setting the
31 * #GstUDPSrc:port property to 0. After setting the udpsrc to PAUSED, the
32 * allocated port can be obtained by reading the port property.
34 * udpsrc can read from multicast groups by setting the #GstUDPSrc:multicast-group
35 * property to the IP address of the multicast group.
37 * Alternatively one can provide a custom socket to udpsrc with the #GstUDPSrc:sockfd
38 * property, udpsrc will then not allocate a socket itself but use the provided
41 * The #GstUDPSrc:caps property is mainly used to give a type to the UDP packet
42 * so that they can be autoplugged in GStreamer pipelines. This is very usefull
43 * for RTP implementations where the contents of the UDP packets is transfered
44 * out-of-bounds using SDP or other means.
46 * The #GstUDPSrc:buffer-size property is used to change the default kernel
47 * buffersizes used for receiving packets. The buffer size may be increased for
48 * high-volume connections, or may be decreased to limit the possible backlog of
49 * incoming data. The system places an absolute limit on these values, on Linux,
50 * for example, the default buffer size is typically 50K and can be increased to
53 * The #GstUDPSrc:skip-first-bytes property is used to strip off an arbitrary
54 * number of bytes from the start of the raw udp packet and can be used to strip
55 * off proprietary header, for example.
57 * The udpsrc is always a live source. It does however not provide a #GstClock,
58 * this is left for upstream elements such as an RTP session manager or demuxer
59 * (such as an MPEG demuxer). As with all live sources, the captured buffers
60 * will have their timestamp set to the current running time of the pipeline.
62 * udpsrc implements a #GstURIHandler interface that handles udp://host:port
65 * If the #GstUDPSrc:timeout property is set to a value bigger than 0, udpsrc
66 * will generate an element message named
67 * <classname>"GstUDPSrcTimeout"</classname>
68 * if no data was recieved in the given timeout.
69 * The message's structure contains one field:
74 * <classname>"timeout"</classname>: the timeout in microseconds that
75 * expired when waiting for data.
79 * The message is typically used to detect that no UDP arrives in the receiver
80 * because it is blocked by a firewall.
83 * A custom file descriptor can be configured with the
84 * #GstUDPSrc:sockfd property. The socket will be closed when setting the
85 * element to READY by default. This behaviour can be
86 * overriden with the #GstUDPSrc:closefd property, in which case the application
87 * is responsible for closing the file descriptor.
90 * <title>Examples</title>
92 * gst-launch -v udpsrc ! fakesink dump=1
93 * ]| A pipeline to read from the default port and dump the udp packets.
94 * To actually generate udp packets on the default port one can use the
95 * udpsink element. When running the following pipeline in another terminal, the
96 * above mentioned pipeline should dump data packets to the console.
98 * gst-launch -v audiotestsrc ! udpsink
101 * gst-launch -v udpsrc port=0 ! fakesink
102 * ]| read udp packets from a free port.
105 * Last reviewed on 2007-09-20 (0.10.7)
111 #include "gstudpsrc.h"
113 #include <gst/net/gstnetaddressmeta.h>
115 GST_DEBUG_CATEGORY_STATIC (udpsrc_debug);
116 #define GST_CAT_DEFAULT (udpsrc_debug)
118 static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
121 GST_STATIC_CAPS_ANY);
123 #define UDP_DEFAULT_PORT 4951
124 #define UDP_DEFAULT_MULTICAST_GROUP "0.0.0.0"
125 #define UDP_DEFAULT_MULTICAST_IFACE NULL
126 #define UDP_DEFAULT_URI "udp://"UDP_DEFAULT_MULTICAST_GROUP":"G_STRINGIFY(UDP_DEFAULT_PORT)
127 #define UDP_DEFAULT_CAPS NULL
128 #define UDP_DEFAULT_SOCKET NULL
129 #define UDP_DEFAULT_BUFFER_SIZE 0
130 #define UDP_DEFAULT_TIMEOUT 0
131 #define UDP_DEFAULT_SKIP_FIRST_BYTES 0
132 #define UDP_DEFAULT_CLOSE_SOCKET TRUE
133 #define UDP_DEFAULT_USED_SOCKET NULL
134 #define UDP_DEFAULT_AUTO_MULTICAST TRUE
135 #define UDP_DEFAULT_REUSE TRUE
142 PROP_MULTICAST_GROUP,
143 PROP_MULTICAST_IFACE,
149 PROP_SKIP_FIRST_BYTES,
158 static void gst_udpsrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
160 static GstCaps *gst_udpsrc_getcaps (GstBaseSrc * src, GstCaps * filter);
162 static GstFlowReturn gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf);
164 static gboolean gst_udpsrc_start (GstBaseSrc * bsrc);
166 static gboolean gst_udpsrc_stop (GstBaseSrc * bsrc);
168 static gboolean gst_udpsrc_unlock (GstBaseSrc * bsrc);
170 static gboolean gst_udpsrc_unlock_stop (GstBaseSrc * bsrc);
172 static void gst_udpsrc_finalize (GObject * object);
174 static void gst_udpsrc_set_property (GObject * object, guint prop_id,
175 const GValue * value, GParamSpec * pspec);
176 static void gst_udpsrc_get_property (GObject * object, guint prop_id,
177 GValue * value, GParamSpec * pspec);
179 #define gst_udpsrc_parent_class parent_class
180 G_DEFINE_TYPE_WITH_CODE (GstUDPSrc, gst_udpsrc, GST_TYPE_PUSH_SRC,
181 G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_udpsrc_uri_handler_init));
184 gst_udpsrc_class_init (GstUDPSrcClass * klass)
186 GObjectClass *gobject_class;
187 GstElementClass *gstelement_class;
188 GstBaseSrcClass *gstbasesrc_class;
189 GstPushSrcClass *gstpushsrc_class;
191 gobject_class = (GObjectClass *) klass;
192 gstelement_class = (GstElementClass *) klass;
193 gstbasesrc_class = (GstBaseSrcClass *) klass;
194 gstpushsrc_class = (GstPushSrcClass *) klass;
196 GST_DEBUG_CATEGORY_INIT (udpsrc_debug, "udpsrc", 0, "UDP src");
198 gobject_class->set_property = gst_udpsrc_set_property;
199 gobject_class->get_property = gst_udpsrc_get_property;
200 gobject_class->finalize = gst_udpsrc_finalize;
202 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT,
203 g_param_spec_int ("port", "Port",
204 "The port to receive the packets from, 0=allocate", 0, G_MAXUINT16,
205 UDP_DEFAULT_PORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
206 g_object_class_install_property (gobject_class, PROP_MULTICAST_GROUP,
207 g_param_spec_string ("multicast-group", "Multicast Group",
208 "The Address of multicast group to join", UDP_DEFAULT_MULTICAST_GROUP,
209 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
210 g_object_class_install_property (gobject_class, PROP_MULTICAST_IFACE,
211 g_param_spec_string ("multicast-iface", "Multicast Interface",
212 "The network interface on which to join the multicast group",
213 UDP_DEFAULT_MULTICAST_IFACE,
214 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
215 g_object_class_install_property (gobject_class, PROP_URI,
216 g_param_spec_string ("uri", "URI",
217 "URI in the form of udp://multicast_group:port", UDP_DEFAULT_URI,
218 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
219 g_object_class_install_property (gobject_class, PROP_CAPS,
220 g_param_spec_boxed ("caps", "Caps",
221 "The caps of the source pad", GST_TYPE_CAPS,
222 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
223 g_object_class_install_property (gobject_class, PROP_SOCKET,
224 g_param_spec_object ("socket", "Socket",
225 "Socket to use for UDP reception. (NULL == allocate)",
226 G_TYPE_SOCKET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
227 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BUFFER_SIZE,
228 g_param_spec_int ("buffer-size", "Buffer Size",
229 "Size of the kernel receive buffer in bytes, 0=default", 0, G_MAXINT,
230 UDP_DEFAULT_BUFFER_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
231 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TIMEOUT,
232 g_param_spec_uint64 ("timeout", "Timeout",
233 "Post a message after timeout nanoseconds (0 = disabled)", 0,
234 G_MAXUINT64, UDP_DEFAULT_TIMEOUT,
235 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
236 g_object_class_install_property (G_OBJECT_CLASS (klass),
237 PROP_SKIP_FIRST_BYTES, g_param_spec_int ("skip-first-bytes",
238 "Skip first bytes", "number of bytes to skip for each udp packet", 0,
239 G_MAXINT, UDP_DEFAULT_SKIP_FIRST_BYTES,
240 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
241 g_object_class_install_property (gobject_class, PROP_CLOSE_SOCKET,
242 g_param_spec_boolean ("close-socket", "Close socket",
243 "Close socket if passed as property on state change",
244 UDP_DEFAULT_CLOSE_SOCKET,
245 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
246 g_object_class_install_property (gobject_class, PROP_USED_SOCKET,
247 g_param_spec_object ("used-socket", "Socket Handle",
248 "Socket currently in use for UDP reception. (NULL = no socket)",
249 G_TYPE_SOCKET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
250 g_object_class_install_property (gobject_class, PROP_AUTO_MULTICAST,
251 g_param_spec_boolean ("auto-multicast", "Auto Multicast",
252 "Automatically join/leave multicast groups",
253 UDP_DEFAULT_AUTO_MULTICAST,
254 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
255 g_object_class_install_property (gobject_class, PROP_REUSE,
256 g_param_spec_boolean ("reuse", "Reuse", "Enable reuse of the port",
257 UDP_DEFAULT_REUSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
259 gst_element_class_add_pad_template (gstelement_class,
260 gst_static_pad_template_get (&src_template));
262 gst_element_class_set_details_simple (gstelement_class, "UDP packet receiver",
264 "Receive data over the network via UDP",
265 "Wim Taymans <wim@fluendo.com>, "
266 "Thijs Vermeir <thijs.vermeir@barco.com>");
268 gstbasesrc_class->start = gst_udpsrc_start;
269 gstbasesrc_class->stop = gst_udpsrc_stop;
270 gstbasesrc_class->unlock = gst_udpsrc_unlock;
271 gstbasesrc_class->unlock_stop = gst_udpsrc_unlock_stop;
272 gstbasesrc_class->get_caps = gst_udpsrc_getcaps;
274 gstpushsrc_class->create = gst_udpsrc_create;
278 gst_udpsrc_init (GstUDPSrc * udpsrc)
281 g_strdup_printf ("udp://%s:%u", UDP_DEFAULT_MULTICAST_GROUP,
284 udpsrc->host = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
285 udpsrc->port = UDP_DEFAULT_PORT;
286 udpsrc->socket = UDP_DEFAULT_SOCKET;
287 udpsrc->multi_iface = g_strdup (UDP_DEFAULT_MULTICAST_IFACE);
288 udpsrc->buffer_size = UDP_DEFAULT_BUFFER_SIZE;
289 udpsrc->timeout = UDP_DEFAULT_TIMEOUT;
290 udpsrc->skip_first_bytes = UDP_DEFAULT_SKIP_FIRST_BYTES;
291 udpsrc->close_socket = UDP_DEFAULT_CLOSE_SOCKET;
292 udpsrc->external_socket = (udpsrc->socket != NULL);
293 udpsrc->auto_multicast = UDP_DEFAULT_AUTO_MULTICAST;
294 udpsrc->used_socket = UDP_DEFAULT_USED_SOCKET;
295 udpsrc->reuse = UDP_DEFAULT_REUSE;
297 udpsrc->cancellable = g_cancellable_new ();
299 /* configure basesrc to be a live source */
300 gst_base_src_set_live (GST_BASE_SRC (udpsrc), TRUE);
301 /* make basesrc output a segment in time */
302 gst_base_src_set_format (GST_BASE_SRC (udpsrc), GST_FORMAT_TIME);
303 /* make basesrc set timestamps on outgoing buffers based on the running_time
304 * when they were captured */
305 gst_base_src_set_do_timestamp (GST_BASE_SRC (udpsrc), TRUE);
309 gst_udpsrc_finalize (GObject * object)
313 udpsrc = GST_UDPSRC (object);
316 gst_caps_unref (udpsrc->caps);
319 g_free (udpsrc->multi_iface);
320 udpsrc->multi_iface = NULL;
322 g_free (udpsrc->uri);
326 g_object_unref (udpsrc->socket);
327 udpsrc->socket = NULL;
329 if (udpsrc->used_socket)
330 g_object_unref (udpsrc->used_socket);
331 udpsrc->used_socket = NULL;
333 if (udpsrc->cancellable)
334 g_object_unref (udpsrc->cancellable);
335 udpsrc->cancellable = NULL;
337 G_OBJECT_CLASS (parent_class)->finalize (object);
341 gst_udpsrc_getcaps (GstBaseSrc * src, GstCaps * filter)
345 udpsrc = GST_UDPSRC (src);
348 return (filter) ? gst_caps_intersect_full (filter, udpsrc->caps,
349 GST_CAPS_INTERSECT_FIRST) : gst_caps_ref (udpsrc->caps);
351 return (filter) ? gst_caps_ref (filter) : gst_caps_new_any ();
356 gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf)
360 GSocketAddress *saddr = NULL;
369 udpsrc = GST_UDPSRC_CAST (psrc);
372 /* quick check, avoid going in select when we already have data */
373 readsize = g_socket_get_available_bytes (udpsrc->used_socket);
380 GST_LOG_OBJECT (udpsrc, "doing select, timeout %" G_GUINT64_FORMAT,
383 if (!g_socket_condition_wait (udpsrc->used_socket, G_IO_IN | G_IO_PRI,
384 udpsrc->cancellable, &err)) {
385 if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY)
386 || g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
388 } else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
389 /* timeout, post element message */
390 gst_element_post_message (GST_ELEMENT_CAST (udpsrc),
391 gst_message_new_element (GST_OBJECT_CAST (udpsrc),
392 gst_structure_new ("GstUDPSrcTimeout",
393 "timeout", G_TYPE_UINT64, udpsrc->timeout, NULL)));
400 } while (G_UNLIKELY (try_again));
402 /* ask how much is available for reading on the socket, this should be exactly
403 * one UDP packet. We will check the return value, though, because in some
404 * case it can return 0 and we don't want a 0 sized buffer. */
405 readsize = g_socket_get_available_bytes (udpsrc->used_socket);
406 if (G_UNLIKELY (readsize < 0))
407 goto get_available_error;
409 /* If we get here and the readsize is zero, then either select was woken up
410 * by activity that is not a read, or a poll error occurred, or a UDP packet
411 * was received that has no data. Since we cannot identify which case it is,
412 * we handle all of them. This could possibly lead to a UDP packet getting
413 * lost, but since UDP is not reliable, we can accept this. */
414 if (G_UNLIKELY (!readsize)) {
415 /* try to read a packet (and it will be ignored),
416 * in case a packet with no data arrived */
421 g_socket_receive_from (udpsrc->used_socket, NULL, (gchar *) pktdata,
422 pktsize, udpsrc->cancellable, &err);
423 if (G_UNLIKELY (ret < 0))
431 GST_LOG_OBJECT (udpsrc, "ioctl says %d bytes available", (int) readsize);
433 pktdata = g_malloc (readsize);
438 g_object_unref (saddr);
442 g_socket_receive_from (udpsrc->used_socket, &saddr, (gchar *) pktdata,
443 pktsize, udpsrc->cancellable, &err);
445 if (G_UNLIKELY (ret < 0))
448 /* patch pktdata and len when stripping off the headers */
449 if (G_UNLIKELY (udpsrc->skip_first_bytes != 0)) {
450 if (G_UNLIKELY (readsize < udpsrc->skip_first_bytes))
453 offset += udpsrc->skip_first_bytes;
454 ret -= udpsrc->skip_first_bytes;
457 outbuf = gst_buffer_new ();
458 gst_buffer_take_memory (outbuf, -1,
459 gst_memory_new_wrapped (0, pktdata, g_free, pktsize, offset, ret));
461 /* use buffer metadata so receivers can also track the address */
463 gst_buffer_add_net_address_meta (outbuf, saddr);
464 g_object_unref (saddr);
468 GST_LOG_OBJECT (udpsrc, "read %d bytes", (int) readsize);
470 *buf = GST_BUFFER_CAST (outbuf);
477 GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
478 ("select error: %s", err->message));
479 g_clear_error (&err);
480 return GST_FLOW_ERROR;
484 GST_DEBUG ("stop called");
485 return GST_FLOW_WRONG_STATE;
489 GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
490 ("get available bytes failed"));
491 return GST_FLOW_ERROR;
497 if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY) ||
498 g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
499 g_clear_error (&err);
500 return GST_FLOW_WRONG_STATE;
502 GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
503 ("receive error %d: %s", ret, err->message));
504 g_clear_error (&err);
505 return GST_FLOW_ERROR;
510 GST_ELEMENT_ERROR (udpsrc, STREAM, DECODE, (NULL),
511 ("UDP buffer to small to skip header"));
512 return GST_FLOW_ERROR;
517 gst_udpsrc_set_uri (GstUDPSrc * src, const gchar * uri, GError ** error)
522 if (!gst_udp_parse_uri (uri, &host, &port))
526 port = UDP_DEFAULT_PORT;
533 src->uri = g_strdup (uri);
540 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
541 ("error parsing uri %s", uri));
542 g_set_error_literal (error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
543 "Could not parse UDP URI");
549 gst_udpsrc_set_property (GObject * object, guint prop_id, const GValue * value,
552 GstUDPSrc *udpsrc = GST_UDPSRC (object);
555 case PROP_BUFFER_SIZE:
556 udpsrc->buffer_size = g_value_get_int (value);
559 udpsrc->port = g_value_get_int (value);
560 g_free (udpsrc->uri);
561 udpsrc->uri = g_strdup_printf ("udp://%s:%u", udpsrc->host, udpsrc->port);
563 case PROP_MULTICAST_GROUP:
567 g_free (udpsrc->host);
568 if ((group = g_value_get_string (value)))
569 udpsrc->host = g_strdup (group);
571 udpsrc->host = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
573 g_free (udpsrc->uri);
574 udpsrc->uri = g_strdup_printf ("udp://%s:%u", udpsrc->host, udpsrc->port);
577 case PROP_MULTICAST_IFACE:
578 g_free (udpsrc->multi_iface);
580 if (g_value_get_string (value) == NULL)
581 udpsrc->multi_iface = g_strdup (UDP_DEFAULT_MULTICAST_IFACE);
583 udpsrc->multi_iface = g_value_dup_string (value);
586 gst_udpsrc_set_uri (udpsrc, g_value_get_string (value), NULL);
590 const GstCaps *new_caps_val = gst_value_get_caps (value);
596 if (new_caps_val == NULL) {
597 new_caps = gst_caps_new_any ();
599 new_caps = gst_caps_copy (new_caps_val);
602 old_caps = udpsrc->caps;
603 udpsrc->caps = new_caps;
605 gst_caps_unref (old_caps);
606 gst_pad_set_caps (GST_BASE_SRC (udpsrc)->srcpad, new_caps);
610 if (udpsrc->socket != NULL && udpsrc->socket != udpsrc->used_socket &&
611 udpsrc->close_socket) {
614 if (!g_socket_close (udpsrc->socket, &err)) {
615 GST_ERROR ("failed to close socket %p: %s", udpsrc->socket,
617 g_clear_error (&err);
621 g_object_unref (udpsrc->socket);
622 udpsrc->socket = g_value_dup_object (value);
623 GST_DEBUG ("setting socket to %p", udpsrc->socket);
626 udpsrc->timeout = g_value_get_uint64 (value);
628 case PROP_SKIP_FIRST_BYTES:
629 udpsrc->skip_first_bytes = g_value_get_int (value);
631 case PROP_CLOSE_SOCKET:
632 udpsrc->close_socket = g_value_get_boolean (value);
634 case PROP_AUTO_MULTICAST:
635 udpsrc->auto_multicast = g_value_get_boolean (value);
638 udpsrc->reuse = g_value_get_boolean (value);
646 gst_udpsrc_get_property (GObject * object, guint prop_id, GValue * value,
649 GstUDPSrc *udpsrc = GST_UDPSRC (object);
652 case PROP_BUFFER_SIZE:
653 g_value_set_int (value, udpsrc->buffer_size);
656 g_value_set_int (value, udpsrc->port);
658 case PROP_MULTICAST_GROUP:
659 g_value_set_string (value, udpsrc->host);
661 case PROP_MULTICAST_IFACE:
662 g_value_set_string (value, udpsrc->multi_iface);
665 g_value_take_string (value, udpsrc->uri);
668 gst_value_set_caps (value, udpsrc->caps);
671 g_value_set_object (value, udpsrc->socket);
674 g_value_set_uint64 (value, udpsrc->timeout);
676 case PROP_SKIP_FIRST_BYTES:
677 g_value_set_int (value, udpsrc->skip_first_bytes);
679 case PROP_CLOSE_SOCKET:
680 g_value_set_boolean (value, udpsrc->close_socket);
682 case PROP_USED_SOCKET:
683 g_value_set_object (value, udpsrc->used_socket);
685 case PROP_AUTO_MULTICAST:
686 g_value_set_boolean (value, udpsrc->auto_multicast);
689 g_value_set_boolean (value, udpsrc->reuse);
692 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
697 /* create a socket for sending to remote machine */
699 gst_udpsrc_start (GstBaseSrc * bsrc)
702 GInetAddress *addr, *bind_addr;
703 GSocketAddress *bind_saddr;
707 src = GST_UDPSRC (bsrc);
709 if (src->socket == NULL) {
710 /* need to allocate a socket */
711 GST_DEBUG_OBJECT (src, "allocating socket for %s:%d", src->host, src->port);
713 addr = g_inet_address_new_from_string (src->host);
717 resolver = g_resolver_get_default ();
719 g_resolver_lookup_by_name (resolver, src->host, src->cancellable,
723 addr = G_INET_ADDRESS (g_object_ref (results->data));
725 g_resolver_free_addresses (results);
726 g_object_unref (resolver);
728 #ifndef GST_DISABLE_GST_DEBUG
730 gchar *ip = g_inet_address_to_string (addr);
732 GST_DEBUG_OBJECT (src, "IP address for host %s is %s", src->host, ip);
737 if ((src->used_socket =
738 g_socket_new (g_inet_address_get_family (addr),
739 G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL)
742 src->external_socket = FALSE;
744 GST_DEBUG_OBJECT (src, "got socket %p", src->used_socket);
747 g_object_unref (src->addr);
749 G_INET_SOCKET_ADDRESS (g_inet_socket_address_new (addr, src->port));
751 GST_DEBUG_OBJECT (src, "binding on port %d", src->port);
753 if (g_inet_address_get_is_multicast (addr))
754 bind_addr = g_inet_address_new_any (g_inet_address_get_family (addr));
756 bind_addr = G_INET_ADDRESS (g_object_ref (addr));
758 g_object_unref (addr);
760 bind_saddr = g_inet_socket_address_new (bind_addr, src->port);
761 g_object_unref (bind_addr);
762 if (!g_socket_bind (src->used_socket, bind_saddr, src->reuse, &err))
765 g_object_unref (bind_saddr);
767 GST_DEBUG_OBJECT (src, "using provided socket %d", src->socket);
768 /* we use the configured socket, try to get some info about it */
769 src->used_socket = G_SOCKET (g_object_ref (src->socket));
770 src->external_socket = TRUE;
773 g_object_unref (src->addr);
775 G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
778 goto getsockname_error;
782 g_socket_set_timeout (src->used_socket, src->timeout / GST_SECOND);
788 len = sizeof (rcvsize);
789 if (src->buffer_size != 0) {
790 rcvsize = src->buffer_size;
792 GST_DEBUG_OBJECT (src, "setting udp buffer of %d bytes", rcvsize);
793 /* set buffer size, Note that on Linux this is typically limited to a
794 * maximum of around 100K. Also a minimum of 128 bytes is required on
797 setsockopt (g_socket_get_fd (src->used_socket), SOL_SOCKET, SO_RCVBUF,
798 (void *) &rcvsize, len);
800 GST_ELEMENT_WARNING (src, RESOURCE, SETTINGS, (NULL),
801 ("Could not create a buffer of requested %d bytes, %d: %s (%d)",
802 rcvsize, ret, g_strerror (errno), errno));
806 /* read the value of the receive buffer. Note that on linux this returns 2x the
807 * value we set because the kernel allocates extra memory for metadata.
808 * The default on Linux is about 100K (which is about 50K without metadata) */
810 getsockopt (g_socket_get_fd (src->used_socket), SOL_SOCKET, SO_RCVBUF,
811 (void *) &rcvsize, &len);
813 GST_DEBUG_OBJECT (src, "have udp buffer of %d bytes", rcvsize);
815 GST_DEBUG_OBJECT (src, "could not get udp buffer size");
819 g_socket_set_broadcast (src->used_socket, TRUE);
821 if (src->auto_multicast
823 g_inet_address_get_is_multicast (g_inet_socket_address_get_address
825 GST_DEBUG_OBJECT (src, "joining multicast group %s", src->host);
826 if (!g_socket_join_multicast_group (src->used_socket,
827 g_inet_socket_address_get_address (src->addr),
828 FALSE, src->multi_iface, &err))
832 /* NOTE: sockaddr_in.sin_port works for ipv4 and ipv6 because sin_port
833 * follows ss_family on both */
835 GInetSocketAddress *addr;
839 G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
842 goto getsockname_error;
844 port = g_inet_socket_address_get_port (addr);
845 GST_DEBUG_OBJECT (src, "bound, on port %d", port);
846 if (port != src->port) {
848 GST_DEBUG_OBJECT (src, "notifying port %d", port);
849 g_object_notify (G_OBJECT (src), "port");
851 g_object_unref (addr);
859 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
860 ("Name resolval failed: %s", err->message));
861 g_clear_error (&err);
862 g_object_unref (resolver);
867 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
868 ("no socket error: %s", err->message));
869 g_clear_error (&err);
870 g_object_unref (addr);
875 gst_udpsrc_stop (GST_BASE_SRC (src));
876 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
877 ("bind failed: %s", err->message));
878 g_clear_error (&err);
879 g_object_unref (bind_saddr);
884 gst_udpsrc_stop (GST_BASE_SRC (src));
885 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
886 ("could add membership: %s", err->message));
887 g_clear_error (&err);
892 gst_udpsrc_stop (GST_BASE_SRC (src));
893 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
894 ("getsockname failed: %s", err->message));
895 g_clear_error (&err);
901 gst_udpsrc_unlock (GstBaseSrc * bsrc)
905 src = GST_UDPSRC (bsrc);
907 GST_LOG_OBJECT (src, "Flushing");
908 g_cancellable_cancel (src->cancellable);
914 gst_udpsrc_unlock_stop (GstBaseSrc * bsrc)
918 src = GST_UDPSRC (bsrc);
920 GST_LOG_OBJECT (src, "No longer flushing");
921 g_cancellable_reset (src->cancellable);
927 gst_udpsrc_stop (GstBaseSrc * bsrc)
931 src = GST_UDPSRC (bsrc);
933 GST_DEBUG ("stopping, closing sockets");
935 if (src->used_socket) {
936 if (src->auto_multicast
938 g_inet_address_get_is_multicast (g_inet_socket_address_get_address
942 GST_DEBUG_OBJECT (src, "leaving multicast group %s", src->host);
944 if (!g_socket_leave_multicast_group (src->used_socket,
945 g_inet_socket_address_get_address (src->addr), FALSE,
946 src->multi_iface, NULL)) {
947 GST_ERROR_OBJECT (src, "Failed to leave multicast group: %s",
949 g_clear_error (&err);
953 if (src->close_socket || !src->external_socket) {
955 if (!g_socket_close (src->used_socket, &err)) {
956 GST_ERROR_OBJECT (src, "Failed to close socket: %s", err->message);
957 g_clear_error (&err);
961 g_object_unref (src->used_socket);
962 src->used_socket = NULL;
963 g_object_unref (src->addr);
970 /*** GSTURIHANDLER INTERFACE *************************************************/
973 gst_udpsrc_uri_get_type (GType type)
978 static const gchar *const *
979 gst_udpsrc_uri_get_protocols (GType type)
981 static const gchar *protocols[] = { "udp", NULL };
987 gst_udpsrc_uri_get_uri (GstURIHandler * handler)
989 GstUDPSrc *src = GST_UDPSRC (handler);
991 return g_strdup (src->uri);
995 gst_udpsrc_uri_set_uri (GstURIHandler * handler, const gchar * uri,
998 return gst_udpsrc_set_uri (GST_UDPSRC (handler), uri, error);
1002 gst_udpsrc_uri_handler_init (gpointer g_iface, gpointer iface_data)
1004 GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
1006 iface->get_type = gst_udpsrc_uri_get_type;
1007 iface->get_protocols = gst_udpsrc_uri_get_protocols;
1008 iface->get_uri = gst_udpsrc_uri_get_uri;
1009 iface->set_uri = gst_udpsrc_uri_set_uri;