/* GStreamer * Copyright (C) <2007> Wim Taymans * Copyright (C) <2009> Jarkko Palviainen * Copyright (C) <2012> Collabora Ltd. * Author: Sebastian Dröge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:element-multiudpsink * @see_also: udpsink, multifdsink * * multiudpsink is a network sink that sends UDP packets to multiple * clients. * It can be combined with rtp payload encoders to implement RTP streaming. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstudp-marshal.h" #include "gstmultiudpsink.h" #include #include "gst/glib-compat-private.h" GST_DEBUG_CATEGORY_STATIC (multiudpsink_debug); #define GST_CAT_DEFAULT (multiudpsink_debug) #define UDP_MAX_SIZE 65507 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); /* MultiUDPSink signals and args */ enum { /* methods */ SIGNAL_ADD, SIGNAL_REMOVE, SIGNAL_CLEAR, SIGNAL_GET_STATS, /* signals */ SIGNAL_CLIENT_ADDED, SIGNAL_CLIENT_REMOVED, /* FILL ME */ LAST_SIGNAL }; #define DEFAULT_SOCKET NULL #define DEFAULT_CLOSE_SOCKET TRUE #define DEFAULT_USED_SOCKET NULL #define DEFAULT_CLIENTS NULL #define DEFAULT_FAMILY G_SOCKET_FAMILY_IPV6 /* FIXME, this should be disabled by default, we don't need to join a multicast * group for sending, if this socket is also used for receiving, it should * be configured in the element that does the receive. */ #define DEFAULT_AUTO_MULTICAST TRUE #define DEFAULT_TTL 64 #define DEFAULT_TTL_MC 1 #define DEFAULT_LOOP TRUE #define DEFAULT_QOS_DSCP -1 #define DEFAULT_SEND_DUPLICATES TRUE #define DEFAULT_BUFFER_SIZE 0 enum { PROP_0, PROP_BYTES_TO_SERVE, PROP_BYTES_SERVED, PROP_SOCKET, PROP_CLOSE_SOCKET, PROP_USED_SOCKET, PROP_CLIENTS, PROP_AUTO_MULTICAST, PROP_TTL, PROP_TTL_MC, PROP_LOOP, PROP_QOS_DSCP, PROP_SEND_DUPLICATES, PROP_BUFFER_SIZE, PROP_LAST }; static void gst_multiudpsink_finalize (GObject * object); static GstFlowReturn gst_multiudpsink_render (GstBaseSink * sink, GstBuffer * buffer); static gboolean gst_multiudpsink_start (GstBaseSink * bsink); static gboolean gst_multiudpsink_stop (GstBaseSink * bsink); static gboolean gst_multiudpsink_unlock (GstBaseSink * bsink); static gboolean gst_multiudpsink_unlock_stop (GstBaseSink * bsink); static void gst_multiudpsink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_multiudpsink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_multiudpsink_add_internal (GstMultiUDPSink * sink, const gchar * host, gint port, gboolean lock); static void gst_multiudpsink_clear_internal (GstMultiUDPSink * sink, gboolean lock); static guint gst_multiudpsink_signals[LAST_SIGNAL] = { 0 }; #define gst_multiudpsink_parent_class parent_class G_DEFINE_TYPE (GstMultiUDPSink, gst_multiudpsink, GST_TYPE_BASE_SINK); static void gst_multiudpsink_class_init (GstMultiUDPSinkClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseSinkClass *gstbasesink_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gstbasesink_class = (GstBaseSinkClass *) klass; gobject_class->set_property = gst_multiudpsink_set_property; gobject_class->get_property = gst_multiudpsink_get_property; gobject_class->finalize = gst_multiudpsink_finalize; /** * GstMultiUDPSink::add: * @gstmultiudpsink: the sink on which the signal is emitted * @host: the hostname/IP address of the client to add * @port: the port of the client to add * * Add a client with destination @host and @port to the list of * clients. When the same host/port pair is added multiple times, the * send-duplicates property defines if the packets are sent multiple times to * the same host/port pair or not. * * When a host/port pair is added multiple times, an equal amount of remove * calls must be performed to actually remove the host/port pair from the list * of destinations. */ gst_multiudpsink_signals[SIGNAL_ADD] = g_signal_new ("add", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiUDPSinkClass, add), NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_INT); /** * GstMultiUDPSink::remove: * @gstmultiudpsink: the sink on which the signal is emitted * @host: the hostname/IP address of the client to remove * @port: the port of the client to remove * * Remove the client with destination @host and @port from the list of * clients. */ gst_multiudpsink_signals[SIGNAL_REMOVE] = g_signal_new ("remove", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiUDPSinkClass, remove), NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_INT); /** * GstMultiUDPSink::clear: * @gstmultiudpsink: the sink on which the signal is emitted * * Clear the list of clients. */ gst_multiudpsink_signals[SIGNAL_CLEAR] = g_signal_new ("clear", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiUDPSinkClass, clear), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * GstMultiUDPSink::get-stats: * @gstmultiudpsink: the sink on which the signal is emitted * @host: the hostname/IP address of the client to get stats on * @port: the port of the client to get stats on * * Get the statistics of the client with destination @host and @port. * * Returns: a GstStructure: bytes_sent, packets_sent, * connect_time (in epoch seconds), disconnect_time (in epoch seconds) */ gst_multiudpsink_signals[SIGNAL_GET_STATS] = g_signal_new ("get-stats", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiUDPSinkClass, get_stats), NULL, NULL, gst_udp_marshal_BOXED__STRING_INT, GST_TYPE_STRUCTURE, 2, G_TYPE_STRING, G_TYPE_INT); /** * GstMultiUDPSink::client-added: * @gstmultiudpsink: the sink emitting the signal * @host: the hostname/IP address of the added client * @port: the port of the added client * * Signal emited when a new client is added to the list of * clients. */ gst_multiudpsink_signals[SIGNAL_CLIENT_ADDED] = g_signal_new ("client-added", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiUDPSinkClass, client_added), NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_INT); /** * GstMultiUDPSink::client-removed: * @gstmultiudpsink: the sink emitting the signal * @host: the hostname/IP address of the removed client * @port: the port of the removed client * * Signal emited when a client is removed from the list of * clients. */ gst_multiudpsink_signals[SIGNAL_CLIENT_REMOVED] = g_signal_new ("client-removed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiUDPSinkClass, client_removed), NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_INT); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BYTES_TO_SERVE, g_param_spec_uint64 ("bytes-to-serve", "Bytes to serve", "Number of bytes received to serve to clients", 0, G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BYTES_SERVED, g_param_spec_uint64 ("bytes-served", "Bytes served", "Total number of bytes sent to all clients", 0, G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_SOCKET, g_param_spec_object ("socket", "Socket Handle", "Socket to use for UDP sending. (NULL == allocate)", G_TYPE_SOCKET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_CLOSE_SOCKET, g_param_spec_boolean ("close-socket", "Close socket", "Close socket if passed as property on state change", DEFAULT_CLOSE_SOCKET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_USED_SOCKET, g_param_spec_object ("used-socket", "Used Socket Handle", "Socket currently in use for UDP sending. (NULL == no socket)", G_TYPE_SOCKET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_CLIENTS, g_param_spec_string ("clients", "Clients", "A comma separated list of host:port pairs with destinations", DEFAULT_CLIENTS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_AUTO_MULTICAST, g_param_spec_boolean ("auto-multicast", "Automatically join/leave multicast groups", "Automatically join/leave the multicast groups, FALSE means user" " has to do it himself", DEFAULT_AUTO_MULTICAST, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_TTL, g_param_spec_int ("ttl", "Unicast TTL", "Used for setting the unicast TTL parameter", 0, 255, DEFAULT_TTL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_TTL_MC, g_param_spec_int ("ttl-mc", "Multicast TTL", "Used for setting the multicast TTL parameter", 0, 255, DEFAULT_TTL_MC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_LOOP, g_param_spec_boolean ("loop", "Multicast Loopback", "Used for setting the multicast loop parameter. TRUE = enable," " FALSE = disable", DEFAULT_LOOP, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_QOS_DSCP, g_param_spec_int ("qos-dscp", "QoS diff srv code point", "Quality of Service, differentiated services code point (-1 default)", -1, 63, DEFAULT_QOS_DSCP, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /** * GstMultiUDPSink::send-duplicates * * When a host/port pair is added mutliple times, send the packet to the host * multiple times as well. * * Since: 0.10.26 */ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEND_DUPLICATES, g_param_spec_boolean ("send-duplicates", "Send Duplicates", "When a distination/port pair is added multiple times, send packets " "multiple times as well", DEFAULT_SEND_DUPLICATES, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BUFFER_SIZE, g_param_spec_int ("buffer-size", "Buffer Size", "Size of the kernel send buffer in bytes, 0=default", 0, G_MAXINT, DEFAULT_BUFFER_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_add_pad_template (gstelement_class, gst_static_pad_template_get (&sink_template)); gst_element_class_set_details_simple (gstelement_class, "UDP packet sender", "Sink/Network", "Send data over the network via UDP", "Wim Taymans "); gstbasesink_class->render = gst_multiudpsink_render; gstbasesink_class->start = gst_multiudpsink_start; gstbasesink_class->stop = gst_multiudpsink_stop; gstbasesink_class->unlock = gst_multiudpsink_unlock; gstbasesink_class->unlock_stop = gst_multiudpsink_unlock_stop; klass->add = gst_multiudpsink_add; klass->remove = gst_multiudpsink_remove; klass->clear = gst_multiudpsink_clear; klass->get_stats = gst_multiudpsink_get_stats; GST_DEBUG_CATEGORY_INIT (multiudpsink_debug, "multiudpsink", 0, "UDP sink"); } static void gst_multiudpsink_init (GstMultiUDPSink * sink) { g_mutex_init (&sink->client_lock); sink->socket = DEFAULT_SOCKET; sink->used_socket = DEFAULT_USED_SOCKET; sink->close_socket = DEFAULT_CLOSE_SOCKET; sink->external_socket = (sink->socket != NULL); sink->auto_multicast = DEFAULT_AUTO_MULTICAST; sink->ttl = DEFAULT_TTL; sink->ttl_mc = DEFAULT_TTL_MC; sink->loop = DEFAULT_LOOP; sink->qos_dscp = DEFAULT_QOS_DSCP; sink->family = DEFAULT_FAMILY; sink->send_duplicates = DEFAULT_SEND_DUPLICATES; sink->cancellable = g_cancellable_new (); } static GstUDPClient * create_client (GstMultiUDPSink * sink, const gchar * host, gint port) { GstUDPClient *client; GInetAddress *addr; GResolver *resolver; GError *err = NULL; addr = g_inet_address_new_from_string (host); if (!addr) { GList *results; resolver = g_resolver_get_default (); results = g_resolver_lookup_by_name (resolver, host, sink->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 (sink, "IP address for host %s is %s", host, ip); g_free (ip); } #endif client = g_slice_new0 (GstUDPClient); client->refcount = 1; client->host = g_strdup (host); client->port = port; client->addr = g_inet_socket_address_new (addr, port); g_object_unref (addr); return client; name_resolve: { g_object_unref (resolver); return NULL; } } static void free_client (GstUDPClient * client) { g_object_unref (client->addr); g_free (client->host); g_slice_free (GstUDPClient, client); } static gint client_compare (GstUDPClient * a, GstUDPClient * b) { if ((a->port == b->port) && (strcmp (a->host, b->host) == 0)) return 0; return 1; } static void gst_multiudpsink_finalize (GObject * object) { GstMultiUDPSink *sink; sink = GST_MULTIUDPSINK (object); g_list_foreach (sink->clients, (GFunc) free_client, NULL); g_list_free (sink->clients); if (sink->socket) g_object_unref (sink->socket); sink->socket = NULL; if (sink->used_socket) g_object_unref (sink->used_socket); sink->used_socket = NULL; if (sink->cancellable) g_object_unref (sink->cancellable); sink->cancellable = NULL; g_mutex_clear (&sink->client_lock); G_OBJECT_CLASS (parent_class)->finalize (object); } static GstFlowReturn gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer) { GstMultiUDPSink *sink; GList *clients; GOutputVector *vec; GstMapInfo *map; guint n_mem, i; gsize size; GstMemory *mem; gint num, no_clients; GError *err = NULL; sink = GST_MULTIUDPSINK (bsink); n_mem = gst_buffer_n_memory (buffer); if (n_mem == 0) goto no_data; vec = g_new (GOutputVector, n_mem); map = g_new (GstMapInfo, n_mem); size = 0; for (i = 0; i < n_mem; i++) { mem = gst_buffer_get_memory (buffer, i); gst_memory_map (mem, &map[i], GST_MAP_READ); if (map[i].size > UDP_MAX_SIZE) { GST_WARNING ("Attempting to send a UDP packet larger than maximum " "size (%" G_GSIZE_FORMAT " > %d)", map[i].size, UDP_MAX_SIZE); } vec[i].buffer = map[i].data; vec[i].size = map[i].size; size += map[i].size; } sink->bytes_to_serve += size; /* grab lock while iterating and sending to clients, this should be * fast as UDP never blocks */ g_mutex_lock (&sink->client_lock); GST_LOG_OBJECT (bsink, "about to send %d bytes", size); no_clients = 0; num = 0; for (clients = sink->clients; clients; clients = g_list_next (clients)) { GstUDPClient *client; gint count; client = (GstUDPClient *) clients->data; no_clients++; GST_LOG_OBJECT (sink, "sending %d bytes to client %p", size, client); count = sink->send_duplicates ? client->refcount : 1; while (count--) { gssize ret; ret = g_socket_send_message (sink->used_socket, client->addr, vec, n_mem, NULL, 0, 0, sink->cancellable, &err); if (ret < 0) goto send_error; num++; client->bytes_sent += ret; client->packets_sent++; sink->bytes_served += ret; } } g_mutex_unlock (&sink->client_lock); /* unmap all memory again */ for (i = 0; i < n_mem; i++) { gst_memory_unmap (map[i].memory, &map[i]); gst_memory_unref (map[i].memory); } g_free (vec); g_free (map); GST_LOG_OBJECT (sink, "sent %d bytes to %d (of %d) clients", size, num, no_clients); return GST_FLOW_OK; no_data: { return GST_FLOW_OK; } send_error: { GST_DEBUG ("got send error %s", err->message); g_clear_error (&err); return GST_FLOW_ERROR; } } static void gst_multiudpsink_set_clients_string (GstMultiUDPSink * sink, const gchar * string) { gchar **clients; gint i; clients = g_strsplit (string, ",", 0); g_mutex_lock (&sink->client_lock); /* clear all existing clients */ gst_multiudpsink_clear_internal (sink, FALSE); for (i = 0; clients[i]; i++) { gchar *host, *p; gint64 port = 0; host = clients[i]; p = strstr (clients[i], ":"); if (p != NULL) { *p = '\0'; port = g_ascii_strtoll (p + 1, NULL, 10); } if (port != 0) gst_multiudpsink_add_internal (sink, host, port, FALSE); } g_mutex_unlock (&sink->client_lock); g_strfreev (clients); } static gchar * gst_multiudpsink_get_clients_string (GstMultiUDPSink * sink) { GString *str; GList *clients; str = g_string_new (""); g_mutex_lock (&sink->client_lock); clients = sink->clients; while (clients) { GstUDPClient *client; gint count; client = (GstUDPClient *) clients->data; clients = g_list_next (clients); count = client->refcount; while (count--) { g_string_append_printf (str, "%s:%d%s", client->host, client->port, (clients || count > 1 ? "," : "")); } } g_mutex_unlock (&sink->client_lock); return g_string_free (str, FALSE); } static void gst_multiudpsink_setup_qos_dscp (GstMultiUDPSink * sink) { /* don't touch on -1 */ if (sink->qos_dscp < 0) return; if (sink->used_socket == NULL) return; #ifdef IP_TOS { gint tos; gint fd; fd = g_socket_get_fd (sink->used_socket); GST_DEBUG_OBJECT (sink, "setting TOS to %d", sink->qos_dscp); /* Extract and shift 6 bits of DSFIELD */ tos = (sink->qos_dscp & 0x3f) << 2; if (setsockopt (fd, IPPROTO_IP, IP_TOS, &tos, sizeof (tos)) < 0) { GST_ERROR_OBJECT (sink, "could not set TOS: %s", g_strerror (errno)); } #ifdef IPV6_TCLASS if (setsockopt (fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof (tos)) < 0) { GST_ERROR_OBJECT (sink, "could not set TCLASS: %s", g_strerror (errno)); } } #endif #endif } static void gst_multiudpsink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstMultiUDPSink *udpsink; udpsink = GST_MULTIUDPSINK (object); switch (prop_id) { case PROP_SOCKET: if (udpsink->socket != NULL && udpsink->socket != udpsink->used_socket && udpsink->close_socket) { GError *err = NULL; if (!g_socket_close (udpsink->socket, &err)) { GST_ERROR ("failed to close socket %p: %s", udpsink->socket, err->message); g_clear_error (&err); } } if (udpsink->socket) g_object_unref (udpsink->socket); udpsink->socket = g_value_dup_object (value); GST_DEBUG_OBJECT (udpsink, "setting socket to %p", udpsink->socket); break; case PROP_CLOSE_SOCKET: udpsink->close_socket = g_value_get_boolean (value); break; case PROP_CLIENTS: gst_multiudpsink_set_clients_string (udpsink, g_value_get_string (value)); break; case PROP_AUTO_MULTICAST: udpsink->auto_multicast = g_value_get_boolean (value); break; case PROP_TTL: udpsink->ttl = g_value_get_int (value); break; case PROP_TTL_MC: udpsink->ttl_mc = g_value_get_int (value); break; case PROP_LOOP: udpsink->loop = g_value_get_boolean (value); break; case PROP_QOS_DSCP: udpsink->qos_dscp = g_value_get_int (value); gst_multiudpsink_setup_qos_dscp (udpsink); break; case PROP_SEND_DUPLICATES: udpsink->send_duplicates = g_value_get_boolean (value); break; case PROP_BUFFER_SIZE: udpsink->buffer_size = g_value_get_int (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_multiudpsink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstMultiUDPSink *udpsink; udpsink = GST_MULTIUDPSINK (object); switch (prop_id) { case PROP_BYTES_TO_SERVE: g_value_set_uint64 (value, udpsink->bytes_to_serve); break; case PROP_BYTES_SERVED: g_value_set_uint64 (value, udpsink->bytes_served); break; case PROP_SOCKET: g_value_set_object (value, udpsink->socket); break; case PROP_CLOSE_SOCKET: g_value_set_boolean (value, udpsink->close_socket); break; case PROP_USED_SOCKET: g_value_set_object (value, udpsink->used_socket); break; case PROP_CLIENTS: g_value_take_string (value, gst_multiudpsink_get_clients_string (udpsink)); break; case PROP_AUTO_MULTICAST: g_value_set_boolean (value, udpsink->auto_multicast); break; case PROP_TTL: g_value_set_int (value, udpsink->ttl); break; case PROP_TTL_MC: g_value_set_int (value, udpsink->ttl_mc); break; case PROP_LOOP: g_value_set_boolean (value, udpsink->loop); break; case PROP_QOS_DSCP: g_value_set_int (value, udpsink->qos_dscp); break; case PROP_SEND_DUPLICATES: g_value_set_boolean (value, udpsink->send_duplicates); break; case PROP_BUFFER_SIZE: g_value_set_int (value, udpsink->buffer_size); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean gst_multiudpsink_configure_client (GstMultiUDPSink * sink, GstUDPClient * client) { GInetSocketAddress *saddr = G_INET_SOCKET_ADDRESS (client->addr); GInetAddress *addr = g_inet_socket_address_get_address (saddr); GError *err = NULL; GST_DEBUG_OBJECT (sink, "configuring client %p", client); if (g_inet_address_get_is_multicast (addr)) { GST_DEBUG_OBJECT (sink, "we have a multicast client %p", client); if (sink->auto_multicast) { GST_DEBUG_OBJECT (sink, "autojoining group"); if (!g_socket_join_multicast_group (sink->used_socket, addr, FALSE, NULL, &err)) goto join_group_failed; } GST_DEBUG_OBJECT (sink, "setting loop to %d", sink->loop); g_socket_set_multicast_loopback (sink->used_socket, sink->loop); GST_DEBUG_OBJECT (sink, "setting ttl to %d", sink->ttl_mc); g_socket_set_multicast_ttl (sink->used_socket, sink->ttl_mc); } else { GST_DEBUG_OBJECT (sink, "setting unicast ttl to %d", sink->ttl); g_socket_set_ttl (sink->used_socket, sink->ttl); } return TRUE; /* ERRORS */ join_group_failed: { gst_multiudpsink_stop (GST_BASE_SINK (sink)); GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL), ("Could not join multicast group: %s", err->message)); g_clear_error (&err); return FALSE; } } /* create a socket for sending to remote machine */ static gboolean gst_multiudpsink_start (GstBaseSink * bsink) { GstMultiUDPSink *sink; GList *clients; GstUDPClient *client; GError *err = NULL; sink = GST_MULTIUDPSINK (bsink); if (sink->socket == NULL) { GST_DEBUG_OBJECT (sink, "creating sockets"); /* create sender socket try IP6, fall back to IP4 */ sink->family = G_SOCKET_FAMILY_IPV6; if ((sink->used_socket = g_socket_new (G_SOCKET_FAMILY_IPV6, G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL) { sink->family = G_SOCKET_FAMILY_IPV4; if ((sink->used_socket = g_socket_new (G_SOCKET_FAMILY_IPV4, G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL) goto no_socket; } GST_DEBUG_OBJECT (sink, "have socket"); sink->external_socket = FALSE; } else { GST_DEBUG_OBJECT (sink, "using configured socket"); /* we use the configured socket */ sink->used_socket = G_SOCKET (g_object_ref (sink->socket)); sink->family = g_socket_get_family (sink->used_socket); sink->external_socket = TRUE; } #ifdef SO_SNDBUF { socklen_t len; gint sndsize, ret; len = sizeof (sndsize); if (sink->buffer_size != 0) { sndsize = sink->buffer_size; GST_DEBUG_OBJECT (sink, "setting udp buffer of %d bytes", sndsize); /* 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 (sink->used_socket), SOL_SOCKET, SO_SNDBUF, (void *) &sndsize, len); if (ret != 0) { GST_ELEMENT_WARNING (sink, RESOURCE, SETTINGS, (NULL), ("Could not create a buffer of requested %d bytes, %d: %s", sndsize, ret, g_strerror (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 (sink->used_socket), SOL_SOCKET, SO_SNDBUF, (void *) &sndsize, &len); if (ret == 0) GST_DEBUG_OBJECT (sink, "have udp buffer of %d bytes", sndsize); else GST_DEBUG_OBJECT (sink, "could not get udp buffer size"); } #endif g_socket_set_broadcast (sink->used_socket, TRUE); sink->bytes_to_serve = 0; sink->bytes_served = 0; gst_multiudpsink_setup_qos_dscp (sink); /* look for multicast clients and join multicast groups appropriately set also ttl and multicast loopback delivery appropriately */ for (clients = sink->clients; clients; clients = g_list_next (clients)) { client = (GstUDPClient *) clients->data; if (!gst_multiudpsink_configure_client (sink, client)) return FALSE; } return TRUE; /* ERRORS */ no_socket: { GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL), ("Could not create socket: %s", err->message)); g_clear_error (&err); return FALSE; } } static gboolean gst_multiudpsink_stop (GstBaseSink * bsink) { GstMultiUDPSink *udpsink; udpsink = GST_MULTIUDPSINK (bsink); if (udpsink->used_socket) { if (udpsink->close_socket || !udpsink->external_socket) { GError *err = NULL; if (!g_socket_close (udpsink->used_socket, &err)) { GST_ERROR_OBJECT (udpsink, "Failed to close socket: %s", err->message); g_clear_error (&err); } } g_object_unref (udpsink->used_socket); udpsink->used_socket = NULL; } return TRUE; } static void gst_multiudpsink_add_internal (GstMultiUDPSink * sink, const gchar * host, gint port, gboolean lock) { GstUDPClient *client; GstUDPClient udpclient; GTimeVal now; GList *find; udpclient.host = (gchar *) host; udpclient.port = port; GST_DEBUG_OBJECT (sink, "adding client on host %s, port %d", host, port); if (lock) g_mutex_lock (&sink->client_lock); find = g_list_find_custom (sink->clients, &udpclient, (GCompareFunc) client_compare); if (find) { client = (GstUDPClient *) find->data; GST_DEBUG_OBJECT (sink, "found %d existing clients with host %s, port %d", client->refcount, host, port); client->refcount++; } else { client = create_client (sink, host, port); if (!client) goto error; g_get_current_time (&now); client->connect_time = GST_TIMEVAL_TO_TIME (now); if (sink->used_socket) gst_multiudpsink_configure_client (sink, client); GST_DEBUG_OBJECT (sink, "add client with host %s, port %d", host, port); sink->clients = g_list_prepend (sink->clients, client); } if (lock) g_mutex_unlock (&sink->client_lock); g_signal_emit (G_OBJECT (sink), gst_multiudpsink_signals[SIGNAL_CLIENT_ADDED], 0, host, port); GST_DEBUG_OBJECT (sink, "added client on host %s, port %d", host, port); return; /* ERRORS */ error: { GST_DEBUG_OBJECT (sink, "did not add client on host %s, port %d", host, port); if (lock) g_mutex_unlock (&sink->client_lock); return; } } void gst_multiudpsink_add (GstMultiUDPSink * sink, const gchar * host, gint port) { gst_multiudpsink_add_internal (sink, host, port, TRUE); } void gst_multiudpsink_remove (GstMultiUDPSink * sink, const gchar * host, gint port) { GList *find; GstUDPClient udpclient; GstUDPClient *client; GTimeVal now; udpclient.host = (gchar *) host; udpclient.port = port; g_mutex_lock (&sink->client_lock); find = g_list_find_custom (sink->clients, &udpclient, (GCompareFunc) client_compare); if (!find) goto not_found; client = (GstUDPClient *) find->data; GST_DEBUG_OBJECT (sink, "found %d clients with host %s, port %d", client->refcount, host, port); client->refcount--; if (client->refcount == 0) { GInetSocketAddress *saddr = G_INET_SOCKET_ADDRESS (client->addr); GInetAddress *addr = g_inet_socket_address_get_address (saddr); GST_DEBUG_OBJECT (sink, "remove client with host %s, port %d", host, port); g_get_current_time (&now); client->disconnect_time = GST_TIMEVAL_TO_TIME (now); if (sink->used_socket && sink->auto_multicast && g_inet_address_get_is_multicast (addr)) { GError *err = NULL; if (!g_socket_leave_multicast_group (sink->used_socket, addr, FALSE, NULL, &err)) { GST_DEBUG_OBJECT (sink, "Failed to leave multicast group: %s", err->message); g_clear_error (&err); } } /* Unlock to emit signal before we delete the actual client */ g_mutex_unlock (&sink->client_lock); g_signal_emit (G_OBJECT (sink), gst_multiudpsink_signals[SIGNAL_CLIENT_REMOVED], 0, host, port); g_mutex_lock (&sink->client_lock); sink->clients = g_list_delete_link (sink->clients, find); free_client (client); } g_mutex_unlock (&sink->client_lock); return; /* ERRORS */ not_found: { g_mutex_unlock (&sink->client_lock); GST_WARNING_OBJECT (sink, "client at host %s, port %d not found", host, port); return; } } static void gst_multiudpsink_clear_internal (GstMultiUDPSink * sink, gboolean lock) { GST_DEBUG_OBJECT (sink, "clearing"); /* we only need to remove the client structure, there is no additional * socket or anything to free for UDP */ if (lock) g_mutex_lock (&sink->client_lock); g_list_foreach (sink->clients, (GFunc) free_client, sink); g_list_free (sink->clients); sink->clients = NULL; if (lock) g_mutex_unlock (&sink->client_lock); } void gst_multiudpsink_clear (GstMultiUDPSink * sink) { gst_multiudpsink_clear_internal (sink, TRUE); } GstStructure * gst_multiudpsink_get_stats (GstMultiUDPSink * sink, const gchar * host, gint port) { GstUDPClient *client; GstStructure *result = NULL; GstUDPClient udpclient; GList *find; udpclient.host = (gchar *) host; udpclient.port = port; g_mutex_lock (&sink->client_lock); find = g_list_find_custom (sink->clients, &udpclient, (GCompareFunc) client_compare); if (!find) goto not_found; GST_DEBUG_OBJECT (sink, "stats for client with host %s, port %d", host, port); client = (GstUDPClient *) find->data; result = gst_structure_new_empty ("multiudpsink-stats"); gst_structure_set (result, "bytes-sent", G_TYPE_UINT64, client->bytes_sent, "packets-sent", G_TYPE_UINT64, client->packets_sent, "connect-time", G_TYPE_UINT64, client->connect_time, "disconnect-time", G_TYPE_UINT64, client->disconnect_time, NULL); g_mutex_unlock (&sink->client_lock); return result; /* ERRORS */ not_found: { g_mutex_unlock (&sink->client_lock); GST_WARNING_OBJECT (sink, "client with host %s, port %d not found", host, port); /* Apparently (see comment in gstmultifdsink.c) returning NULL from here may * confuse/break python bindings */ return gst_structure_new_empty ("multiudpsink-stats"); } } static gboolean gst_multiudpsink_unlock (GstBaseSink * bsink) { GstMultiUDPSink *sink; sink = GST_MULTIUDPSINK (bsink); g_cancellable_cancel (sink->cancellable); return TRUE; } static gboolean gst_multiudpsink_unlock_stop (GstBaseSink * bsink) { GstMultiUDPSink *sink; sink = GST_MULTIUDPSINK (bsink); g_cancellable_reset (sink->cancellable); return TRUE; }