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gstreamer/gst/udp/gstmultiudpsink.c
Rasmus Rohde 11ed7c0373 multiudpsink: add multicast-iface property 
udpsrc already has support for setting the multicast interface, which
is useful for multi-homed machines. This patch adds the same code to
the multiudpsink.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=685864
2012-10-10 11:48:25 +02:00

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/* GStreamer
* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
* Copyright (C) <2009> Jarkko Palviainen <jarkko.palviainen@sesca.com>
* Copyright (C) <2012> Collabora Ltd.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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.
*/
/* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
* with newer GLib versions (>= 2.31.0) */
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstudp-marshal.h"
#include "gstmultiudpsink.h"
#include <string.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifndef G_OS_WIN32
#include <netinet/in.h>
#endif
#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
/* 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_MULTICAST_IFACE NULL
#define DEFAULT_TTL 64
#define DEFAULT_TTL_MC 1
#define DEFAULT_LOOP TRUE
#define DEFAULT_FORCE_IPV4 FALSE
#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_MULTICAST_IFACE,
PROP_TTL,
PROP_TTL_MC,
PROP_LOOP,
PROP_FORCE_IPV4,
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_MULTICAST_IFACE,
g_param_spec_string ("multicast-iface", "Multicast Interface",
"The network interface on which to join the multicast group",
DEFAULT_MULTICAST_IFACE, 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));
/**
* GstMultiUDPSink::force-ipv4
*
* Force the use of an IPv4 socket.
*
* Since: 1.0.2
*/
g_object_class_install_property (gobject_class, PROP_FORCE_IPV4,
g_param_spec_boolean ("force-ipv4", "Force IPv4",
"Forcing the use of an IPv4 socket", DEFAULT_FORCE_IPV4,
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_static_metadata (gstelement_class, "UDP packet sender",
"Sink/Network",
"Send data over the network via UDP",
"Wim Taymans <wim.taymans@gmail.com>");
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->force_ipv4 = DEFAULT_FORCE_IPV4;
sink->qos_dscp = DEFAULT_QOS_DSCP;
sink->send_duplicates = DEFAULT_SEND_DUPLICATES;
sink->multi_iface = g_strdup (DEFAULT_MULTICAST_IFACE);
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_free (sink->multi_iface);
sink->multi_iface = 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);
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 %" G_GSIZE_FORMAT " 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 %" G_GSIZE_FORMAT " 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 (G_UNLIKELY (ret < 0)) {
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
goto flushing;
/* we continue after posting a warning, next packets might be ok
* again */
if (size > UDP_MAX_SIZE) {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Attempting to send a UDP packet larger than maximum size "
"(%" G_GSIZE_FORMAT " > %d)", size, UDP_MAX_SIZE),
("Reason: %s", err ? err->message : "unknown reason"));
} else {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Error sending UDP packet"), ("Reason: %s",
err ? err->message : "unknown reason"));
}
g_clear_error (&err);
} else {
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 %" G_GSIZE_FORMAT " bytes to %d (of %d) clients",
size, num, no_clients);
return GST_FLOW_OK;
no_data:
{
return GST_FLOW_OK;
}
flushing:
{
GST_DEBUG ("we are flushing");
g_mutex_unlock (&sink->client_lock);
g_clear_error (&err);
return GST_FLOW_FLUSHING;
}
}
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_MULTICAST_IFACE:
g_free (udpsink->multi_iface);
if (g_value_get_string (value) == NULL)
udpsink->multi_iface = g_strdup (DEFAULT_MULTICAST_IFACE);
else
udpsink->multi_iface = g_value_dup_string (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_FORCE_IPV4:
udpsink->force_ipv4 = 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_MULTICAST_IFACE:
g_value_set_string (value, udpsink->multi_iface);
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_FORCE_IPV4:
g_value_set_boolean (value, udpsink->force_ipv4);
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,
sink->multi_iface, &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 ? err->message : "unknown reason"));
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 */
if (sink->force_ipv4 || (sink->used_socket =
g_socket_new (G_SOCKET_FAMILY_IPV6,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL) {
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->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,
sink->multi_iface, &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;
}
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