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., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, 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-1.0 -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-1.0 -v audiotestsrc ! udpsink
101 * gst-launch-1.0 -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 #if GLIB_CHECK_VERSION (2, 35, 7)
116 #include <gio/gnetworking.h>
119 /* nicked from gnetworking.h */
122 #define _WIN32_WINNT 0x0501
124 #include <winsock2.h>
126 #include <ws2tcpip.h> /* for socklen_t */
127 #endif /* G_OS_WIN32 */
129 #ifdef HAVE_SYS_SOCKET_H
130 #include <sys/socket.h>
134 /* not 100% correct, but a good upper bound for memory allocation purposes */
135 #define MAX_IPV4_UDP_PACKET_SIZE (65536 - 8)
137 GST_DEBUG_CATEGORY_STATIC (udpsrc_debug);
138 #define GST_CAT_DEFAULT (udpsrc_debug)
140 static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
143 GST_STATIC_CAPS_ANY);
145 #define UDP_DEFAULT_PORT 5004
146 #define UDP_DEFAULT_MULTICAST_GROUP "0.0.0.0"
147 #define UDP_DEFAULT_MULTICAST_IFACE NULL
148 #define UDP_DEFAULT_URI "udp://"UDP_DEFAULT_MULTICAST_GROUP":"G_STRINGIFY(UDP_DEFAULT_PORT)
149 #define UDP_DEFAULT_CAPS NULL
150 #define UDP_DEFAULT_SOCKET NULL
151 #define UDP_DEFAULT_BUFFER_SIZE 0
152 #define UDP_DEFAULT_TIMEOUT 0
153 #define UDP_DEFAULT_SKIP_FIRST_BYTES 0
154 #define UDP_DEFAULT_CLOSE_SOCKET TRUE
155 #define UDP_DEFAULT_USED_SOCKET NULL
156 #define UDP_DEFAULT_AUTO_MULTICAST TRUE
157 #define UDP_DEFAULT_REUSE TRUE
164 PROP_MULTICAST_GROUP,
165 PROP_MULTICAST_IFACE,
171 PROP_SKIP_FIRST_BYTES,
181 static void gst_udpsrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
183 static GstCaps *gst_udpsrc_getcaps (GstBaseSrc * src, GstCaps * filter);
185 static GstFlowReturn gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf);
187 static gboolean gst_udpsrc_start (GstBaseSrc * bsrc);
189 static gboolean gst_udpsrc_stop (GstBaseSrc * bsrc);
191 static gboolean gst_udpsrc_unlock (GstBaseSrc * bsrc);
193 static gboolean gst_udpsrc_unlock_stop (GstBaseSrc * bsrc);
195 static void gst_udpsrc_finalize (GObject * object);
197 static void gst_udpsrc_set_property (GObject * object, guint prop_id,
198 const GValue * value, GParamSpec * pspec);
199 static void gst_udpsrc_get_property (GObject * object, guint prop_id,
200 GValue * value, GParamSpec * pspec);
202 #define gst_udpsrc_parent_class parent_class
203 G_DEFINE_TYPE_WITH_CODE (GstUDPSrc, gst_udpsrc, GST_TYPE_PUSH_SRC,
204 G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_udpsrc_uri_handler_init));
207 gst_udpsrc_class_init (GstUDPSrcClass * klass)
209 GObjectClass *gobject_class;
210 GstElementClass *gstelement_class;
211 GstBaseSrcClass *gstbasesrc_class;
212 GstPushSrcClass *gstpushsrc_class;
214 gobject_class = (GObjectClass *) klass;
215 gstelement_class = (GstElementClass *) klass;
216 gstbasesrc_class = (GstBaseSrcClass *) klass;
217 gstpushsrc_class = (GstPushSrcClass *) klass;
219 GST_DEBUG_CATEGORY_INIT (udpsrc_debug, "udpsrc", 0, "UDP src");
221 gobject_class->set_property = gst_udpsrc_set_property;
222 gobject_class->get_property = gst_udpsrc_get_property;
223 gobject_class->finalize = gst_udpsrc_finalize;
225 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT,
226 g_param_spec_int ("port", "Port",
227 "The port to receive the packets from, 0=allocate", 0, G_MAXUINT16,
228 UDP_DEFAULT_PORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
229 g_object_class_install_property (gobject_class, PROP_MULTICAST_GROUP,
230 g_param_spec_string ("multicast-group", "Multicast Group",
231 "The Address of multicast group to join", UDP_DEFAULT_MULTICAST_GROUP,
232 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
233 g_object_class_install_property (gobject_class, PROP_MULTICAST_IFACE,
234 g_param_spec_string ("multicast-iface", "Multicast Interface",
235 "The network interface on which to join the multicast group",
236 UDP_DEFAULT_MULTICAST_IFACE,
237 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
238 g_object_class_install_property (gobject_class, PROP_URI,
239 g_param_spec_string ("uri", "URI",
240 "URI in the form of udp://multicast_group:port", UDP_DEFAULT_URI,
241 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
242 g_object_class_install_property (gobject_class, PROP_CAPS,
243 g_param_spec_boxed ("caps", "Caps",
244 "The caps of the source pad", GST_TYPE_CAPS,
245 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
246 g_object_class_install_property (gobject_class, PROP_SOCKET,
247 g_param_spec_object ("socket", "Socket",
248 "Socket to use for UDP reception. (NULL == allocate)",
249 G_TYPE_SOCKET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
250 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BUFFER_SIZE,
251 g_param_spec_int ("buffer-size", "Buffer Size",
252 "Size of the kernel receive buffer in bytes, 0=default", 0, G_MAXINT,
253 UDP_DEFAULT_BUFFER_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
254 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TIMEOUT,
255 g_param_spec_uint64 ("timeout", "Timeout",
256 "Post a message after timeout nanoseconds (0 = disabled)", 0,
257 G_MAXUINT64, UDP_DEFAULT_TIMEOUT,
258 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
259 g_object_class_install_property (G_OBJECT_CLASS (klass),
260 PROP_SKIP_FIRST_BYTES, g_param_spec_int ("skip-first-bytes",
261 "Skip first bytes", "number of bytes to skip for each udp packet", 0,
262 G_MAXINT, UDP_DEFAULT_SKIP_FIRST_BYTES,
263 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
264 g_object_class_install_property (gobject_class, PROP_CLOSE_SOCKET,
265 g_param_spec_boolean ("close-socket", "Close socket",
266 "Close socket if passed as property on state change",
267 UDP_DEFAULT_CLOSE_SOCKET,
268 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
269 g_object_class_install_property (gobject_class, PROP_USED_SOCKET,
270 g_param_spec_object ("used-socket", "Socket Handle",
271 "Socket currently in use for UDP reception. (NULL = no socket)",
272 G_TYPE_SOCKET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
273 g_object_class_install_property (gobject_class, PROP_AUTO_MULTICAST,
274 g_param_spec_boolean ("auto-multicast", "Auto Multicast",
275 "Automatically join/leave multicast groups",
276 UDP_DEFAULT_AUTO_MULTICAST,
277 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
278 g_object_class_install_property (gobject_class, PROP_REUSE,
279 g_param_spec_boolean ("reuse", "Reuse", "Enable reuse of the port",
280 UDP_DEFAULT_REUSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
282 /* FIXME 2.0: multicast-group and bind-address should
283 * be separated, the former only being the multicast group and
284 * the latter always being the address the socket is bound too,
285 * even if a multicast group is given.
287 g_object_class_install_property (gobject_class, PROP_BIND_ADDRESS,
288 g_param_spec_string ("bind-address", "Bind Address",
289 "Address to bind the socket to. This is equivalent to the "
290 "multicast-group property", UDP_DEFAULT_MULTICAST_GROUP,
291 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
293 gst_element_class_add_pad_template (gstelement_class,
294 gst_static_pad_template_get (&src_template));
296 gst_element_class_set_static_metadata (gstelement_class,
297 "UDP packet receiver", "Source/Network",
298 "Receive data over the network via UDP",
299 "Wim Taymans <wim@fluendo.com>, "
300 "Thijs Vermeir <thijs.vermeir@barco.com>");
302 gstbasesrc_class->start = gst_udpsrc_start;
303 gstbasesrc_class->stop = gst_udpsrc_stop;
304 gstbasesrc_class->unlock = gst_udpsrc_unlock;
305 gstbasesrc_class->unlock_stop = gst_udpsrc_unlock_stop;
306 gstbasesrc_class->get_caps = gst_udpsrc_getcaps;
308 gstpushsrc_class->create = gst_udpsrc_create;
312 gst_udpsrc_init (GstUDPSrc * udpsrc)
315 g_strdup_printf ("udp://%s:%u", UDP_DEFAULT_MULTICAST_GROUP,
318 udpsrc->multi_group = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
319 udpsrc->port = UDP_DEFAULT_PORT;
320 udpsrc->socket = UDP_DEFAULT_SOCKET;
321 udpsrc->multi_iface = g_strdup (UDP_DEFAULT_MULTICAST_IFACE);
322 udpsrc->buffer_size = UDP_DEFAULT_BUFFER_SIZE;
323 udpsrc->timeout = UDP_DEFAULT_TIMEOUT;
324 udpsrc->skip_first_bytes = UDP_DEFAULT_SKIP_FIRST_BYTES;
325 udpsrc->close_socket = UDP_DEFAULT_CLOSE_SOCKET;
326 udpsrc->external_socket = (udpsrc->socket != NULL);
327 udpsrc->auto_multicast = UDP_DEFAULT_AUTO_MULTICAST;
328 udpsrc->used_socket = UDP_DEFAULT_USED_SOCKET;
329 udpsrc->reuse = UDP_DEFAULT_REUSE;
331 udpsrc->cancellable = g_cancellable_new ();
333 /* configure basesrc to be a live source */
334 gst_base_src_set_live (GST_BASE_SRC (udpsrc), TRUE);
335 /* make basesrc output a segment in time */
336 gst_base_src_set_format (GST_BASE_SRC (udpsrc), GST_FORMAT_TIME);
337 /* make basesrc set timestamps on outgoing buffers based on the running_time
338 * when they were captured */
339 gst_base_src_set_do_timestamp (GST_BASE_SRC (udpsrc), TRUE);
343 gst_udpsrc_finalize (GObject * object)
347 udpsrc = GST_UDPSRC (object);
350 gst_caps_unref (udpsrc->caps);
353 g_free (udpsrc->multi_iface);
354 udpsrc->multi_iface = NULL;
356 g_free (udpsrc->uri);
359 g_free (udpsrc->multi_group);
360 udpsrc->multi_group = NULL;
363 g_object_unref (udpsrc->socket);
364 udpsrc->socket = NULL;
366 if (udpsrc->used_socket)
367 g_object_unref (udpsrc->used_socket);
368 udpsrc->used_socket = NULL;
370 if (udpsrc->cancellable)
371 g_object_unref (udpsrc->cancellable);
372 udpsrc->cancellable = NULL;
374 G_OBJECT_CLASS (parent_class)->finalize (object);
378 gst_udpsrc_getcaps (GstBaseSrc * src, GstCaps * filter)
382 udpsrc = GST_UDPSRC (src);
385 return (filter) ? gst_caps_intersect_full (filter, udpsrc->caps,
386 GST_CAPS_INTERSECT_FIRST) : gst_caps_ref (udpsrc->caps);
388 return (filter) ? gst_caps_ref (filter) : gst_caps_new_any ();
393 gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf)
399 GSocketAddress *saddr = NULL;
406 udpsrc = GST_UDPSRC_CAST (psrc);
409 /* quick check, avoid going in select when we already have data */
410 readsize = g_socket_get_available_bytes (udpsrc->used_socket);
420 timeout = udpsrc->timeout / 1000;
424 GST_LOG_OBJECT (udpsrc, "doing select, timeout %" G_GUINT64_FORMAT,
427 if (!g_socket_condition_timed_wait (udpsrc->used_socket, G_IO_IN | G_IO_PRI,
428 timeout, udpsrc->cancellable, &err)) {
429 if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY)
430 || g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
432 } else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
433 g_clear_error (&err);
434 /* timeout, post element message */
435 gst_element_post_message (GST_ELEMENT_CAST (udpsrc),
436 gst_message_new_element (GST_OBJECT_CAST (udpsrc),
437 gst_structure_new ("GstUDPSrcTimeout",
438 "timeout", G_TYPE_UINT64, udpsrc->timeout, NULL)));
445 } while (G_UNLIKELY (try_again));
447 /* ask how much is available for reading on the socket, this should be exactly
448 * one UDP packet. We will check the return value, though, because in some
449 * case it can return 0 and we don't want a 0 sized buffer. */
450 readsize = g_socket_get_available_bytes (udpsrc->used_socket);
451 if (G_UNLIKELY (readsize < 0))
452 goto get_available_error;
454 /* If we get here and the readsize is zero, then either select was woken up
455 * by activity that is not a read, or a poll error occurred, or a UDP packet
456 * was received that has no data. Since we cannot identify which case it is,
457 * we handle all of them. This could possibly lead to a UDP packet getting
458 * lost, but since UDP is not reliable, we can accept this. */
459 if (G_UNLIKELY (!readsize)) {
460 /* try to read a packet (and it will be ignored),
461 * in case a packet with no data arrived */
463 g_socket_receive_from (udpsrc->used_socket, NULL, NULL,
464 0, udpsrc->cancellable, &err);
465 if (G_UNLIKELY (res < 0))
473 GST_LOG_OBJECT (udpsrc, "ioctl says %d bytes available", (int) readsize);
475 /* sanity check value from _get_available_bytes(), which might be as
476 * large as the kernel-side buffer on some operating systems */
477 if (g_socket_get_family (udpsrc->used_socket) == G_SOCKET_FAMILY_IPV4)
478 readsize = MIN (MAX_IPV4_UDP_PACKET_SIZE, readsize);
480 ret = GST_BASE_SRC_CLASS (parent_class)->alloc (GST_BASE_SRC_CAST (udpsrc),
481 -1, readsize, &outbuf);
482 if (ret != GST_FLOW_OK)
485 gst_buffer_map (outbuf, &info, GST_MAP_WRITE);
489 g_object_unref (saddr);
493 g_socket_receive_from (udpsrc->used_socket, &saddr, (gchar *) info.data,
494 info.size, udpsrc->cancellable, &err);
496 if (G_UNLIKELY (res < 0)) {
497 /* EHOSTUNREACH for a UDP socket means that a packet sent with udpsink
498 * generated a "port unreachable" ICMP response. We ignore that and try
500 if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_HOST_UNREACHABLE)) {
501 gst_buffer_unmap (outbuf, &info);
502 gst_buffer_unref (outbuf);
504 g_clear_error (&err);
510 /* patch offset and size when stripping off the headers */
511 if (G_UNLIKELY (udpsrc->skip_first_bytes != 0)) {
512 if (G_UNLIKELY (readsize < udpsrc->skip_first_bytes))
515 offset += udpsrc->skip_first_bytes;
516 res -= udpsrc->skip_first_bytes;
519 gst_buffer_unmap (outbuf, &info);
520 gst_buffer_resize (outbuf, offset, res);
522 /* use buffer metadata so receivers can also track the address */
524 gst_buffer_add_net_address_meta (outbuf, saddr);
525 g_object_unref (saddr);
529 GST_LOG_OBJECT (udpsrc, "read %d bytes", (int) readsize);
531 *buf = GST_BUFFER_CAST (outbuf);
538 GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
539 ("select error: %s", err->message));
540 g_clear_error (&err);
541 return GST_FLOW_ERROR;
545 GST_DEBUG ("stop called");
546 g_clear_error (&err);
547 return GST_FLOW_FLUSHING;
551 GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
552 ("get available bytes failed"));
553 return GST_FLOW_ERROR;
557 GST_DEBUG ("Allocation failed");
562 gst_buffer_unmap (outbuf, &info);
563 gst_buffer_unref (outbuf);
565 if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY) ||
566 g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
567 g_clear_error (&err);
568 return GST_FLOW_FLUSHING;
570 GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
571 ("receive error %" G_GSSIZE_FORMAT ": %s", res, err->message));
572 g_clear_error (&err);
573 return GST_FLOW_ERROR;
578 gst_buffer_unmap (outbuf, &info);
579 gst_buffer_unref (outbuf);
581 GST_ELEMENT_ERROR (udpsrc, STREAM, DECODE, (NULL),
582 ("UDP buffer to small to skip header"));
583 return GST_FLOW_ERROR;
588 gst_udpsrc_set_uri (GstUDPSrc * src, const gchar * uri, GError ** error)
593 if (!gst_udp_parse_uri (uri, &multi_group, &port))
596 if (port == (guint16) - 1)
597 port = UDP_DEFAULT_PORT;
599 g_free (src->multi_group);
600 src->multi_group = multi_group;
604 src->uri = g_strdup (uri);
611 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
612 ("error parsing uri %s", uri));
613 g_set_error_literal (error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
614 "Could not parse UDP URI");
620 gst_udpsrc_set_property (GObject * object, guint prop_id, const GValue * value,
623 GstUDPSrc *udpsrc = GST_UDPSRC (object);
626 case PROP_BUFFER_SIZE:
627 udpsrc->buffer_size = g_value_get_int (value);
630 udpsrc->port = g_value_get_int (value);
631 g_free (udpsrc->uri);
633 g_strdup_printf ("udp://%s:%u", udpsrc->multi_group, udpsrc->port);
635 case PROP_MULTICAST_GROUP:
636 case PROP_BIND_ADDRESS:
640 g_free (udpsrc->multi_group);
641 if ((group = g_value_get_string (value)))
642 udpsrc->multi_group = g_strdup (group);
644 udpsrc->multi_group = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
646 g_free (udpsrc->uri);
648 g_strdup_printf ("udp://%s:%u", udpsrc->multi_group, udpsrc->port);
651 case PROP_MULTICAST_IFACE:
652 g_free (udpsrc->multi_iface);
654 if (g_value_get_string (value) == NULL)
655 udpsrc->multi_iface = g_strdup (UDP_DEFAULT_MULTICAST_IFACE);
657 udpsrc->multi_iface = g_value_dup_string (value);
660 gst_udpsrc_set_uri (udpsrc, g_value_get_string (value), NULL);
664 const GstCaps *new_caps_val = gst_value_get_caps (value);
670 if (new_caps_val == NULL) {
671 new_caps = gst_caps_new_any ();
673 new_caps = gst_caps_copy (new_caps_val);
676 old_caps = udpsrc->caps;
677 udpsrc->caps = new_caps;
679 gst_caps_unref (old_caps);
680 gst_pad_set_caps (GST_BASE_SRC (udpsrc)->srcpad, new_caps);
684 if (udpsrc->socket != NULL && udpsrc->socket != udpsrc->used_socket &&
685 udpsrc->close_socket) {
688 if (!g_socket_close (udpsrc->socket, &err)) {
689 GST_ERROR ("failed to close socket %p: %s", udpsrc->socket,
691 g_clear_error (&err);
695 g_object_unref (udpsrc->socket);
696 udpsrc->socket = g_value_dup_object (value);
697 GST_DEBUG ("setting socket to %p", udpsrc->socket);
700 udpsrc->timeout = g_value_get_uint64 (value);
702 case PROP_SKIP_FIRST_BYTES:
703 udpsrc->skip_first_bytes = g_value_get_int (value);
705 case PROP_CLOSE_SOCKET:
706 udpsrc->close_socket = g_value_get_boolean (value);
708 case PROP_AUTO_MULTICAST:
709 udpsrc->auto_multicast = g_value_get_boolean (value);
712 udpsrc->reuse = g_value_get_boolean (value);
720 gst_udpsrc_get_property (GObject * object, guint prop_id, GValue * value,
723 GstUDPSrc *udpsrc = GST_UDPSRC (object);
726 case PROP_BUFFER_SIZE:
727 g_value_set_int (value, udpsrc->buffer_size);
730 g_value_set_int (value, udpsrc->port);
732 case PROP_MULTICAST_GROUP:
733 case PROP_BIND_ADDRESS:
734 g_value_set_string (value, udpsrc->multi_group);
736 case PROP_MULTICAST_IFACE:
737 g_value_set_string (value, udpsrc->multi_iface);
740 g_value_set_string (value, udpsrc->uri);
743 gst_value_set_caps (value, udpsrc->caps);
746 g_value_set_object (value, udpsrc->socket);
749 g_value_set_uint64 (value, udpsrc->timeout);
751 case PROP_SKIP_FIRST_BYTES:
752 g_value_set_int (value, udpsrc->skip_first_bytes);
754 case PROP_CLOSE_SOCKET:
755 g_value_set_boolean (value, udpsrc->close_socket);
757 case PROP_USED_SOCKET:
758 g_value_set_object (value, udpsrc->used_socket);
760 case PROP_AUTO_MULTICAST:
761 g_value_set_boolean (value, udpsrc->auto_multicast);
764 g_value_set_boolean (value, udpsrc->reuse);
767 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
772 /* create a socket for sending to remote machine */
774 gst_udpsrc_start (GstBaseSrc * bsrc)
777 GInetAddress *addr, *bind_addr;
778 GSocketAddress *bind_saddr;
782 src = GST_UDPSRC (bsrc);
784 if (src->socket == NULL) {
785 /* need to allocate a socket */
786 GST_DEBUG_OBJECT (src, "allocating socket for %s:%d", src->multi_group,
789 addr = g_inet_address_new_from_string (src->multi_group);
793 GST_DEBUG_OBJECT (src, "resolving IP address for host %s",
795 resolver = g_resolver_get_default ();
797 g_resolver_lookup_by_name (resolver, src->multi_group,
798 src->cancellable, &err);
801 addr = G_INET_ADDRESS (g_object_ref (results->data));
803 g_resolver_free_addresses (results);
804 g_object_unref (resolver);
806 #ifndef GST_DISABLE_GST_DEBUG
808 gchar *ip = g_inet_address_to_string (addr);
810 GST_DEBUG_OBJECT (src, "IP address for host %s is %s", src->multi_group,
816 if ((src->used_socket =
817 g_socket_new (g_inet_address_get_family (addr),
818 G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL)
821 src->external_socket = FALSE;
823 GST_DEBUG_OBJECT (src, "got socket %p", src->used_socket);
826 g_object_unref (src->addr);
828 G_INET_SOCKET_ADDRESS (g_inet_socket_address_new (addr, src->port));
830 GST_DEBUG_OBJECT (src, "binding on port %d", src->port);
832 if (g_inet_address_get_is_multicast (addr))
833 bind_addr = g_inet_address_new_any (g_inet_address_get_family (addr));
835 bind_addr = G_INET_ADDRESS (g_object_ref (addr));
837 g_object_unref (addr);
839 bind_saddr = g_inet_socket_address_new (bind_addr, src->port);
840 g_object_unref (bind_addr);
841 if (!g_socket_bind (src->used_socket, bind_saddr, src->reuse, &err))
844 g_object_unref (bind_saddr);
846 GST_DEBUG_OBJECT (src, "using provided socket %p", src->socket);
847 /* we use the configured socket, try to get some info about it */
848 src->used_socket = G_SOCKET (g_object_ref (src->socket));
849 src->external_socket = TRUE;
852 g_object_unref (src->addr);
854 G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
857 goto getsockname_error;
860 #if GLIB_CHECK_VERSION (2, 35, 7)
864 if (src->buffer_size != 0) {
865 GError *opt_err = NULL;
867 GST_INFO_OBJECT (src, "setting udp buffer of %d bytes", src->buffer_size);
868 /* set buffer size, Note that on Linux this is typically limited to a
869 * maximum of around 100K. Also a minimum of 128 bytes is required on
871 if (!g_socket_set_option (src->used_socket, SOL_SOCKET, SO_RCVBUF,
872 src->buffer_size, &opt_err)) {
873 GST_ELEMENT_WARNING (src, RESOURCE, SETTINGS, (NULL),
874 ("Could not create a buffer of requested %d bytes: %s",
875 src->buffer_size, opt_err->message));
876 g_error_free (opt_err);
881 /* read the value of the receive buffer. Note that on linux this returns
882 * 2x the value we set because the kernel allocates extra memory for
883 * metadata. The default on Linux is about 100K (which is about 50K
884 * without metadata) */
885 if (g_socket_get_option (src->used_socket, SOL_SOCKET, SO_RCVBUF, &val,
887 GST_INFO_OBJECT (src, "have udp buffer of %d bytes", val);
889 GST_DEBUG_OBJECT (src, "could not get udp buffer size");
892 #elif defined (SO_RCVBUF)
897 len = sizeof (rcvsize);
898 if (src->buffer_size != 0) {
899 rcvsize = src->buffer_size;
901 GST_DEBUG_OBJECT (src, "setting udp buffer of %d bytes", rcvsize);
902 /* set buffer size, Note that on Linux this is typically limited to a
903 * maximum of around 100K. Also a minimum of 128 bytes is required on
906 setsockopt (g_socket_get_fd (src->used_socket), SOL_SOCKET, SO_RCVBUF,
907 (void *) &rcvsize, len);
909 GST_ELEMENT_WARNING (src, RESOURCE, SETTINGS, (NULL),
910 ("Could not create a buffer of requested %d bytes, %d: %s (%d)",
911 rcvsize, ret, g_strerror (errno), errno));
915 /* read the value of the receive buffer. Note that on linux this returns 2x the
916 * value we set because the kernel allocates extra memory for metadata.
917 * The default on Linux is about 100K (which is about 50K without metadata) */
919 getsockopt (g_socket_get_fd (src->used_socket), SOL_SOCKET, SO_RCVBUF,
920 (void *) &rcvsize, &len);
922 GST_DEBUG_OBJECT (src, "have udp buffer of %d bytes", rcvsize);
924 GST_DEBUG_OBJECT (src, "could not get udp buffer size");
927 if (src->buffer_size != 0) {
928 GST_WARNING_OBJECT (src, "don't know how to set udp buffer size on this "
929 "OS. Consider upgrading your GLib to >= 2.35.7 and re-compiling the "
930 "GStreamer udp plugin");
934 g_socket_set_broadcast (src->used_socket, TRUE);
936 if (src->auto_multicast
938 g_inet_address_get_is_multicast (g_inet_socket_address_get_address
940 GST_DEBUG_OBJECT (src, "joining multicast group %s", src->multi_group);
941 if (!g_socket_join_multicast_group (src->used_socket,
942 g_inet_socket_address_get_address (src->addr),
943 FALSE, src->multi_iface, &err))
947 /* NOTE: sockaddr_in.sin_port works for ipv4 and ipv6 because sin_port
948 * follows ss_family on both */
950 GInetSocketAddress *addr;
954 G_INET_SOCKET_ADDRESS (g_socket_get_local_address (src->used_socket,
957 goto getsockname_error;
959 port = g_inet_socket_address_get_port (addr);
960 GST_DEBUG_OBJECT (src, "bound, on port %d", port);
961 if (port != src->port) {
963 GST_DEBUG_OBJECT (src, "notifying port %d", port);
964 g_object_notify (G_OBJECT (src), "port");
966 g_object_unref (addr);
974 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
975 ("Name resolval failed: %s", err->message));
976 g_clear_error (&err);
977 g_object_unref (resolver);
982 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
983 ("no socket error: %s", err->message));
984 g_clear_error (&err);
985 g_object_unref (addr);
990 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
991 ("bind failed: %s", err->message));
992 g_clear_error (&err);
993 g_object_unref (bind_saddr);
994 gst_udpsrc_stop (GST_BASE_SRC (src));
999 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
1000 ("could add membership: %s", err->message));
1001 g_clear_error (&err);
1002 gst_udpsrc_stop (GST_BASE_SRC (src));
1007 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
1008 ("getsockname failed: %s", err->message));
1009 g_clear_error (&err);
1010 gst_udpsrc_stop (GST_BASE_SRC (src));
1016 gst_udpsrc_unlock (GstBaseSrc * bsrc)
1020 src = GST_UDPSRC (bsrc);
1022 GST_LOG_OBJECT (src, "Flushing");
1023 g_cancellable_cancel (src->cancellable);
1029 gst_udpsrc_unlock_stop (GstBaseSrc * bsrc)
1033 src = GST_UDPSRC (bsrc);
1035 GST_LOG_OBJECT (src, "No longer flushing");
1036 g_cancellable_reset (src->cancellable);
1042 gst_udpsrc_stop (GstBaseSrc * bsrc)
1046 src = GST_UDPSRC (bsrc);
1048 GST_DEBUG ("stopping, closing sockets");
1050 if (src->used_socket) {
1051 if (src->auto_multicast
1053 g_inet_address_get_is_multicast (g_inet_socket_address_get_address
1057 GST_DEBUG_OBJECT (src, "leaving multicast group %s", src->multi_group);
1059 if (!g_socket_leave_multicast_group (src->used_socket,
1060 g_inet_socket_address_get_address (src->addr), FALSE,
1061 src->multi_iface, &err)) {
1062 GST_ERROR_OBJECT (src, "Failed to leave multicast group: %s",
1064 g_clear_error (&err);
1068 if (src->close_socket || !src->external_socket) {
1070 if (!g_socket_close (src->used_socket, &err)) {
1071 GST_ERROR_OBJECT (src, "Failed to close socket: %s", err->message);
1072 g_clear_error (&err);
1076 g_object_unref (src->used_socket);
1077 src->used_socket = NULL;
1078 g_object_unref (src->addr);
1085 /*** GSTURIHANDLER INTERFACE *************************************************/
1088 gst_udpsrc_uri_get_type (GType type)
1093 static const gchar *const *
1094 gst_udpsrc_uri_get_protocols (GType type)
1096 static const gchar *protocols[] = { "udp", NULL };
1102 gst_udpsrc_uri_get_uri (GstURIHandler * handler)
1104 GstUDPSrc *src = GST_UDPSRC (handler);
1106 return g_strdup (src->uri);
1110 gst_udpsrc_uri_set_uri (GstURIHandler * handler, const gchar * uri,
1113 return gst_udpsrc_set_uri (GST_UDPSRC (handler), uri, error);
1117 gst_udpsrc_uri_handler_init (gpointer g_iface, gpointer iface_data)
1119 GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
1121 iface->get_type = gst_udpsrc_uri_get_type;
1122 iface->get_protocols = gst_udpsrc_uri_get_protocols;
1123 iface->get_uri = gst_udpsrc_uri_get_uri;
1124 iface->set_uri = gst_udpsrc_uri_set_uri;