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gstreamer/gst/udp/gstmultiudpsink.c
Tim-Philipp Müller f54110fd3e udp: don't use soon-to-be-deprecated g_cancellable_reset() 
From the API documentation: "Note that it is generally not
a good idea to reuse an existing cancellable for more
operations after it has been cancelled once, as this
function might tempt you to do. The recommended practice
is to drop the reference to a cancellable after cancelling
it, and let it die with the outstanding async operations.
You should create a fresh cancellable for further async
operations."

https://bugzilla.gnome.org/show_bug.cgi?id=739132
2015-05-19 19:00:20 +01:00

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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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, 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 "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
#define DEFAULT_BIND_ADDRESS NULL
#define DEFAULT_BIND_PORT 0
enum
{
PROP_0,
PROP_BYTES_TO_SERVE,
PROP_BYTES_SERVED,
PROP_SOCKET,
PROP_SOCKET_V6,
PROP_CLOSE_SOCKET,
PROP_USED_SOCKET,
PROP_USED_SOCKET_V6,
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_BIND_ADDRESS,
PROP_BIND_PORT
};
static void gst_multiudpsink_finalize (GObject * object);
static GstFlowReturn gst_multiudpsink_render (GstBaseSink * sink,
GstBuffer * buffer);
static GstFlowReturn gst_multiudpsink_render_list (GstBaseSink * bsink,
GstBufferList * buffer_list);
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, g_cclosure_marshal_generic, 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, g_cclosure_marshal_generic, 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_generic, 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, g_cclosure_marshal_generic, 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, g_cclosure_marshal_generic, 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, g_cclosure_marshal_generic,
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_SOCKET_V6,
g_param_spec_object ("socket-v6", "Socket Handle IPv6",
"Socket to use for UDPv6 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_USED_SOCKET_V6,
g_param_spec_object ("used-socket-v6", "Used Socket Handle IPv6",
"Socket currently in use for UDPv6 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
*/
#ifndef GST_REMOVE_DEPRECATED
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 (DEPRECATED, has no effect anymore)",
DEFAULT_FORCE_IPV4,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_DEPRECATED));
#endif
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.
*/
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));
g_object_class_install_property (gobject_class, PROP_BIND_ADDRESS,
g_param_spec_string ("bind-address", "Bind Address",
"Address to bind the socket to", DEFAULT_BIND_ADDRESS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BIND_PORT,
g_param_spec_int ("bind-port", "Bind Port",
"Port to bind the socket to", 0, G_MAXUINT16,
DEFAULT_BIND_PORT, 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 to one or multiple recipients "
"which can be added or removed at runtime using action signals",
"Wim Taymans <wim.taymans@gmail.com>");
gstbasesink_class->render = gst_multiudpsink_render;
gstbasesink_class->render_list = gst_multiudpsink_render_list;
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)
{
guint max_mem;
g_mutex_init (&sink->client_lock);
sink->clients = NULL;
sink->num_v4_unique = 0;
sink->num_v4_all = 0;
sink->num_v6_unique = 0;
sink->num_v6_all = 0;
sink->socket = DEFAULT_SOCKET;
sink->socket_v6 = DEFAULT_SOCKET;
sink->used_socket = DEFAULT_USED_SOCKET;
sink->used_socket_v6 = 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 ();
/* pre-allocate OutputVector, MapInfo and OutputMessage arrays
* for use in the render and render_list functions */
max_mem = gst_buffer_get_max_memory ();
sink->n_vecs = max_mem;
sink->vecs = g_new (GOutputVector, sink->n_vecs);
sink->n_maps = max_mem;
sink->maps = g_new (GstMapInfo, sink->n_maps);
sink->n_messages = 1;
sink->messages = g_new (GstOutputMessage, sink->n_messages);
/* we assume that the number of memories per buffer can fit into a guint8 */
g_warn_if_fail (max_mem <= G_MAXUINT8);
}
static GstUDPClient *
gst_udp_client_new (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->ref_count = 1;
client->add_count = 0;
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;
}
}
/* call with client lock held */
static void
gst_udp_client_unref (GstUDPClient * client)
{
if (--client->ref_count == 0) {
g_object_unref (client->addr);
g_free (client->host);
g_slice_free (GstUDPClient, client);
}
}
/* call with client lock held */
static inline GstUDPClient *
gst_udp_client_ref (GstUDPClient * client)
{
++client->ref_count;
return 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) gst_udp_client_unref, NULL);
g_list_free (sink->clients);
if (sink->socket)
g_object_unref (sink->socket);
sink->socket = NULL;
if (sink->socket_v6)
g_object_unref (sink->socket_v6);
sink->socket_v6 = NULL;
if (sink->used_socket)
g_object_unref (sink->used_socket);
sink->used_socket = NULL;
if (sink->used_socket_v6)
g_object_unref (sink->used_socket_v6);
sink->used_socket_v6 = NULL;
if (sink->cancellable)
g_object_unref (sink->cancellable);
sink->cancellable = NULL;
g_free (sink->multi_iface);
sink->multi_iface = NULL;
g_free (sink->vecs);
sink->vecs = NULL;
g_free (sink->maps);
sink->maps = NULL;
g_free (sink->messages);
sink->messages = NULL;
g_free (sink->bind_address);
sink->bind_address = NULL;
g_mutex_clear (&sink->client_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/* replacement until we can depend unconditionally on the real one in GLib */
#ifndef HAVE_G_SOCKET_SEND_MESSAGES
#define g_socket_send_messages gst_socket_send_messages
static gint
gst_socket_send_messages (GSocket * socket, GstOutputMessage * messages,
guint num_messages, gint flags, GCancellable * cancellable, GError ** error)
{
gssize result;
gint i;
for (i = 0; i < num_messages; ++i) {
GstOutputMessage *msg = &messages[i];
GError *msg_error = NULL;
result = g_socket_send_message (socket, msg->address,
msg->vectors, msg->num_vectors,
msg->control_messages, msg->num_control_messages,
flags, cancellable, &msg_error);
if (result < 0) {
/* if we couldn't send all messages, just return how many we did
* manage to send, provided we managed to send at least one */
if (msg_error->code == G_IO_ERROR_WOULD_BLOCK && i > 0) {
g_error_free (msg_error);
return i;
} else {
g_propagate_error (error, msg_error);
return -1;
}
}
msg->bytes_sent = result;
}
return i;
}
#endif /* HAVE_G_SOCKET_SEND_MESSAGES */
static gsize
fill_vectors (GOutputVector * vecs, GstMapInfo * maps, guint n, GstBuffer * buf)
{
GstMemory *mem;
gsize size = 0;
guint i;
g_assert (gst_buffer_n_memory (buf) == n);
for (i = 0; i < n; ++i) {
mem = gst_buffer_peek_memory (buf, i);
if (gst_memory_map (mem, &maps[i], GST_MAP_READ)) {
vecs[i].buffer = maps[i].data;
vecs[i].size = maps[i].size;
} else {
GST_WARNING ("Failed to map memory %p for reading", mem);
vecs[i].buffer = "";
vecs[i].size = 0;
}
size += vecs[i].size;
}
return size;
}
static gsize
gst_udp_calc_message_size (GstOutputMessage * msg)
{
gsize size = 0;
guint i;
for (i = 0; i < msg->num_vectors; ++i)
size += msg->vectors[i].size;
return size;
}
static gint
gst_udp_messsages_find_first_not_sent (GstOutputMessage * messages,
guint num_messages)
{
guint i;
for (i = 0; i < num_messages; ++i) {
GstOutputMessage *msg = &messages[i];
if (msg->bytes_sent == 0 && gst_udp_calc_message_size (msg) > 0)
return i;
}
return -1;
}
static inline gchar *
gst_udp_address_get_string (GSocketAddress * addr, gchar * s, gsize size)
{
GInetSocketAddress *isa = G_INET_SOCKET_ADDRESS (addr);
GInetAddress *ia;
gchar *addr_str;
ia = g_inet_socket_address_get_address (isa);
addr_str = g_inet_address_to_string (ia);
g_snprintf (s, size, "%s:%u", addr_str, g_inet_socket_address_get_port (isa));
g_free (addr_str);
return s;
}
/* Wrapper around g_socket_send_messages() plus error handling (ignoring).
* Returns FALSE if we got cancelled, otherwise TRUE. */
static gboolean
gst_multiudpsink_send_messages (GstMultiUDPSink * sink, GSocket * socket,
GstOutputMessage * messages, guint num_messages)
{
gboolean sent_max_size_warning = FALSE;
while (num_messages > 0) {
gchar astr[64] G_GNUC_UNUSED;
GError *err = NULL;
guint msg_size, skip, i;
gint ret, err_idx;
ret = g_socket_send_messages (socket, messages, num_messages, 0,
sink->cancellable, &err);
if (G_UNLIKELY (ret < 0)) {
GstOutputMessage *msg;
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
g_clear_error (&err);
return FALSE;
}
err_idx = gst_udp_messsages_find_first_not_sent (messages, num_messages);
if (err_idx < 0)
break;
msg = &messages[err_idx];
msg_size = gst_udp_calc_message_size (msg);
GST_LOG_OBJECT (sink, "error sending %u bytes to client %s: %s", msg_size,
gst_udp_address_get_string (msg->address, astr, sizeof (astr)),
err->message);
skip = 1;
if (msg_size > UDP_MAX_SIZE) {
if (!sent_max_size_warning) {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Attempting to send a UDP packets larger than maximum size "
"(%u > %d)", msg_size, UDP_MAX_SIZE),
("Reason: %s", err ? err->message : "unknown reason"));
sent_max_size_warning = FALSE;
}
} else {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Error sending UDP packets"), ("client %s, reason: %s",
gst_udp_address_get_string (msg->address, astr, sizeof (astr)),
(err != NULL) ? err->message : "unknown reason"));
for (i = err_idx + 1; i < num_messages; ++i, ++skip) {
if (messages[i].address != msg->address)
break;
}
GST_DEBUG_OBJECT (sink, "skipping %d message(s) to same client", skip);
}
/* ignore any errors and try sending the rest */
g_clear_error (&err);
ret = skip;
}
g_assert (ret <= num_messages);
messages += ret;
num_messages -= ret;
}
return TRUE;
}
static GstFlowReturn
gst_multiudpsink_render_buffers (GstMultiUDPSink * sink, GstBuffer ** buffers,
guint num_buffers, guint8 * mem_nums, guint total_mem_num)
{
GstOutputMessage *msgs;
gboolean send_duplicates;
GstUDPClient **clients;
GOutputVector *vecs;
GstMapInfo *map_infos;
GstFlowReturn flow_ret;
guint num_addr_v4, num_addr_v6;
guint num_addr, num_msgs;
GError *err = NULL;
guint i, j, mem;
gsize size = 0;
GList *l;
send_duplicates = sink->send_duplicates;
g_mutex_lock (&sink->client_lock);
if (send_duplicates) {
num_addr_v4 = sink->num_v4_all;
num_addr_v6 = sink->num_v6_all;
} else {
num_addr_v4 = sink->num_v4_unique;
num_addr_v6 = sink->num_v6_unique;
}
num_addr = num_addr_v4 + num_addr_v6;
if (num_addr == 0)
goto no_clients;
clients = g_newa (GstUDPClient *, num_addr);
for (l = sink->clients, i = 0; l != NULL; l = l->next) {
GstUDPClient *client = l->data;
clients[i++] = gst_udp_client_ref (client);
for (j = 1; send_duplicates && j < client->add_count; ++j)
clients[i++] = gst_udp_client_ref (client);
}
g_assert_cmpuint (i, ==, num_addr);
g_mutex_unlock (&sink->client_lock);
GST_LOG_OBJECT (sink, "%u buffers, %u memories -> to be sent to %u clients",
num_buffers, total_mem_num, num_addr);
/* ensure our pre-allocated scratch space arrays are large enough */
if (sink->n_vecs < total_mem_num) {
sink->n_vecs = GST_ROUND_UP_16 (total_mem_num);
g_free (sink->vecs);
sink->vecs = g_new (GOutputVector, sink->n_vecs);
}
vecs = sink->vecs;
if (sink->n_maps < total_mem_num) {
sink->n_maps = GST_ROUND_UP_16 (total_mem_num);
g_free (sink->maps);
sink->maps = g_new (GstMapInfo, sink->n_maps);
}
map_infos = sink->maps;
num_msgs = num_addr * num_buffers;
if (sink->n_messages < num_msgs) {
sink->n_messages = GST_ROUND_UP_16 (num_msgs);
g_free (sink->messages);
sink->messages = g_new (GstOutputMessage, sink->n_messages);
}
msgs = sink->messages;
/* populate first num_buffers messages with output vectors for the buffers */
for (i = 0, mem = 0; i < num_buffers; ++i) {
size += fill_vectors (&vecs[mem], &map_infos[mem], mem_nums[i], buffers[i]);
msgs[i].vectors = &vecs[mem];
msgs[i].num_vectors = mem_nums[i];
msgs[i].num_control_messages = 0;
msgs[i].control_messages = NULL;
msgs[i].address = clients[0]->addr;
mem += mem_nums[i];
}
/* FIXME: how about some locking? (there wasn't any before either, but..) */
sink->bytes_to_serve += size;
/* now copy the pre-filled num_buffer messages over to the next num_buffer
* messages for the next client, where we also change the target adddress */
for (i = 1; i < num_addr; ++i) {
for (j = 0; j < num_buffers; ++j) {
msgs[i * num_buffers + j] = msgs[j];
msgs[i * num_buffers + j].address = clients[i]->addr;
}
}
/* now send it! */
{
gboolean ret;
/* no IPv4 socket? Send it all from the IPv6 socket then.. */
if (sink->used_socket == NULL) {
ret = gst_multiudpsink_send_messages (sink, sink->used_socket_v6,
msgs, num_msgs);
} else {
guint num_msgs_v4 = num_buffers * num_addr_v4;
guint num_msgs_v6 = num_buffers * num_addr_v6;
/* our client list is sorted with IPv4 clients first and IPv6 ones last */
ret = gst_multiudpsink_send_messages (sink, sink->used_socket,
msgs, num_msgs_v4);
if (!ret)
goto cancelled;
ret = gst_multiudpsink_send_messages (sink, sink->used_socket_v6,
msgs + num_msgs_v4, num_msgs_v6);
}
if (!ret)
goto cancelled;
}
flow_ret = GST_FLOW_OK;
/* now update stats */
g_mutex_lock (&sink->client_lock);
for (i = 0; i < num_addr; ++i) {
GstUDPClient *client = clients[i];
for (j = 0; j < num_buffers; ++j) {
gsize bytes_sent;
bytes_sent = msgs[i * num_buffers + j].bytes_sent;
client->bytes_sent += bytes_sent;
client->packets_sent++;
sink->bytes_served += bytes_sent;
}
gst_udp_client_unref (client);
}
g_mutex_unlock (&sink->client_lock);
out:
for (i = 0; i < mem; ++i)
gst_memory_unmap (map_infos[i].memory, &map_infos[i]);
return flow_ret;
no_clients:
{
g_mutex_unlock (&sink->client_lock);
GST_LOG_OBJECT (sink, "no clients");
return GST_FLOW_OK;
}
cancelled:
{
GST_INFO_OBJECT (sink, "cancelled");
g_clear_error (&err);
flow_ret = GST_FLOW_FLUSHING;
g_mutex_lock (&sink->client_lock);
for (i = 0; i < num_addr; ++i)
gst_udp_client_unref (clients[i]);
g_mutex_unlock (&sink->client_lock);
goto out;
}
}
static GstFlowReturn
gst_multiudpsink_render_list (GstBaseSink * bsink, GstBufferList * buffer_list)
{
GstMultiUDPSink *sink;
GstBuffer **buffers;
GstFlowReturn flow;
guint8 *mem_nums;
guint total_mems;
guint i, num_buffers;
sink = GST_MULTIUDPSINK_CAST (bsink);
num_buffers = gst_buffer_list_length (buffer_list);
if (num_buffers == 0)
goto no_data;
buffers = g_newa (GstBuffer *, num_buffers);
mem_nums = g_newa (guint8, num_buffers);
for (i = 0, total_mems = 0; i < num_buffers; ++i) {
buffers[i] = gst_buffer_list_get (buffer_list, i);
mem_nums[i] = gst_buffer_n_memory (buffers[i]);
total_mems += mem_nums[i];
}
flow = gst_multiudpsink_render_buffers (sink, buffers, num_buffers,
mem_nums, total_mems);
return flow;
no_data:
{
GST_LOG_OBJECT (sink, "empty buffer");
return GST_FLOW_OK;
}
}
static GstFlowReturn
gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstMultiUDPSink *sink;
GstFlowReturn flow;
guint8 n_mem;
sink = GST_MULTIUDPSINK_CAST (bsink);
n_mem = gst_buffer_n_memory (buffer);
if (n_mem > 0)
flow = gst_multiudpsink_render_buffers (sink, &buffer, 1, &n_mem, n_mem);
else
flow = GST_FLOW_OK;
return flow;
}
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->add_count;
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, GSocket * socket)
{
/* don't touch on -1 */
if (sink->qos_dscp < 0)
return;
if (socket == NULL)
return;
#ifdef IP_TOS
{
gint tos;
gint fd;
fd = g_socket_get_fd (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_SOCKET_V6:
if (udpsink->socket_v6 != NULL
&& udpsink->socket_v6 != udpsink->used_socket_v6
&& udpsink->close_socket) {
GError *err = NULL;
if (!g_socket_close (udpsink->socket_v6, &err)) {
GST_ERROR ("failed to close socket %p: %s", udpsink->socket_v6,
err->message);
g_clear_error (&err);
}
}
if (udpsink->socket_v6)
g_object_unref (udpsink->socket_v6);
udpsink->socket_v6 = g_value_dup_object (value);
GST_DEBUG_OBJECT (udpsink, "setting socket to %p", udpsink->socket_v6);
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, udpsink->used_socket);
gst_multiudpsink_setup_qos_dscp (udpsink, udpsink->used_socket_v6);
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;
case PROP_BIND_ADDRESS:
g_free (udpsink->bind_address);
udpsink->bind_address = g_value_dup_string (value);
break;
case PROP_BIND_PORT:
udpsink->bind_port = 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_SOCKET_V6:
g_value_set_object (value, udpsink->socket_v6);
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_USED_SOCKET_V6:
g_value_set_object (value, udpsink->used_socket_v6);
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;
case PROP_BIND_ADDRESS:
g_value_set_string (value, udpsink->bind_address);
break;
case PROP_BIND_PORT:
g_value_set_int (value, udpsink->bind_port);
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);
GSocketFamily family = g_socket_address_get_family (G_SOCKET_ADDRESS (saddr));
GSocket *socket;
GError *err = NULL;
GST_DEBUG_OBJECT (sink, "configuring client %p", client);
if (family == G_SOCKET_FAMILY_IPV6 && !sink->used_socket_v6)
goto invalid_family;
/* Select socket to send from for this address */
if (family == G_SOCKET_FAMILY_IPV6 || !sink->used_socket)
socket = sink->used_socket_v6;
else
socket = sink->used_socket;
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 (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 (socket, sink->loop);
GST_DEBUG_OBJECT (sink, "setting ttl to %d", sink->ttl_mc);
g_socket_set_multicast_ttl (socket, sink->ttl_mc);
} else {
GST_DEBUG_OBJECT (sink, "setting unicast ttl to %d", sink->ttl);
g_socket_set_ttl (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;
}
invalid_family:
{
gst_multiudpsink_stop (GST_BASE_SINK (sink));
GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
("Invalid address family (got %d)", family));
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);
sink->external_socket = FALSE;
if (sink->socket) {
GST_DEBUG_OBJECT (sink, "using configured socket");
if (g_socket_get_family (sink->socket) == G_SOCKET_FAMILY_IPV6) {
sink->used_socket_v6 = G_SOCKET (g_object_ref (sink->socket));
sink->external_socket = TRUE;
} else {
sink->used_socket = G_SOCKET (g_object_ref (sink->socket));
sink->external_socket = TRUE;
}
}
if (sink->socket_v6) {
GST_DEBUG_OBJECT (sink, "using configured IPv6 socket");
g_return_val_if_fail (g_socket_get_family (sink->socket) !=
G_SOCKET_FAMILY_IPV6, FALSE);
if (sink->used_socket_v6 && sink->used_socket_v6 != sink->socket_v6) {
GST_ERROR_OBJECT (sink,
"Provided different IPv6 sockets in socket and socket-v6 properties");
return FALSE;
}
sink->used_socket_v6 = G_SOCKET (g_object_ref (sink->socket_v6));
sink->external_socket = TRUE;
}
if (!sink->used_socket && !sink->used_socket_v6) {
GSocketAddress *bind_addr;
GInetAddress *bind_iaddr;
if (sink->bind_address) {
GSocketFamily family;
bind_iaddr = g_inet_address_new_from_string (sink->bind_address);
if (!bind_iaddr) {
GList *results;
GResolver *resolver;
resolver = g_resolver_get_default ();
results =
g_resolver_lookup_by_name (resolver, sink->bind_address,
sink->cancellable, &err);
if (!results) {
g_object_unref (resolver);
goto name_resolve;
}
bind_iaddr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_object_unref (bind_iaddr);
family = g_socket_address_get_family (G_SOCKET_ADDRESS (bind_addr));
if ((sink->used_socket =
g_socket_new (family, G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_UDP, &err)) == NULL) {
g_object_unref (bind_addr);
goto no_socket;
}
g_socket_bind (sink->used_socket, bind_addr, TRUE, &err);
if (err != NULL)
goto bind_error;
} else {
/* create sender sockets if none available */
if ((sink->used_socket = g_socket_new (G_SOCKET_FAMILY_IPV4,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL)
goto no_socket;
bind_iaddr = g_inet_address_new_any (G_SOCKET_FAMILY_IPV4);
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_socket_bind (sink->used_socket, bind_addr, TRUE, &err);
g_object_unref (bind_addr);
g_object_unref (bind_iaddr);
if (err != NULL)
goto bind_error;
if ((sink->used_socket_v6 = g_socket_new (G_SOCKET_FAMILY_IPV6,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP,
&err)) == NULL) {
GST_INFO_OBJECT (sink, "Failed to create IPv6 socket: %s",
err->message);
g_clear_error (&err);
} else {
bind_iaddr = g_inet_address_new_any (G_SOCKET_FAMILY_IPV6);
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_socket_bind (sink->used_socket_v6, bind_addr, TRUE, &err);
g_object_unref (bind_addr);
g_object_unref (bind_iaddr);
if (err != NULL)
goto bind_error;
}
}
}
#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. */
if (sink->used_socket) {
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)));
}
}
if (sink->used_socket_v6) {
ret =
setsockopt (g_socket_get_fd (sink->used_socket_v6), 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) */
if (sink->used_socket) {
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");
}
if (sink->used_socket_v6) {
ret =
getsockopt (g_socket_get_fd (sink->used_socket_v6), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, &len);
if (ret == 0)
GST_DEBUG_OBJECT (sink, "have UDPv6 buffer of %d bytes", sndsize);
else
GST_DEBUG_OBJECT (sink, "could not get UDPv6 buffer size");
}
}
#endif
#ifdef SO_BINDTODEVICE
if (sink->multi_iface) {
if (sink->used_socket) {
if (setsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET,
SO_BINDTODEVICE, sink->multi_iface,
strlen (sink->multi_iface)) < 0)
GST_WARNING_OBJECT (sink, "setsockopt SO_BINDTODEVICE failed: %s",
strerror (errno));
}
if (sink->used_socket_v6) {
if (setsockopt (g_socket_get_fd (sink->used_socket_v6), SOL_SOCKET,
SO_BINDTODEVICE, sink->multi_iface,
strlen (sink->multi_iface)) < 0)
GST_WARNING_OBJECT (sink, "setsockopt SO_BINDTODEVICE failed (v6): %s",
strerror (errno));
}
}
#endif
if (sink->used_socket)
g_socket_set_broadcast (sink->used_socket, TRUE);
if (sink->used_socket_v6)
g_socket_set_broadcast (sink->used_socket_v6, TRUE);
sink->bytes_to_serve = 0;
sink->bytes_served = 0;
gst_multiudpsink_setup_qos_dscp (sink, sink->used_socket);
gst_multiudpsink_setup_qos_dscp (sink, sink->used_socket_v6);
/* 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;
}
bind_error:
{
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL),
("Failed to bind socket: %s", err->message));
g_clear_error (&err);
return FALSE;
}
name_resolve:
{
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL),
("Failed to resolve bind address %s: %s", sink->bind_address,
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;
}
if (udpsink->used_socket_v6) {
if (udpsink->close_socket || !udpsink->external_socket) {
GError *err = NULL;
if (!g_socket_close (udpsink->used_socket_v6, &err)) {
GST_ERROR_OBJECT (udpsink, "Failed to close socket: %s", err->message);
g_clear_error (&err);
}
}
g_object_unref (udpsink->used_socket_v6);
udpsink->used_socket_v6 = NULL;
}
return TRUE;
}
static gint
gst_udp_client_compare_socket_family (GstUDPClient * a, GstUDPClient * b)
{
GSocketFamily fa = g_socket_address_get_family (a->addr);
GSocketFamily fb = g_socket_address_get_family (b->addr);
if (fa == fb)
return 0;
/* a should go before b */
if (fa == G_SOCKET_FAMILY_IPV4 && fb == G_SOCKET_FAMILY_IPV6)
return -1;
/* b should go before a */
return 1;
}
static void
gst_multiudpsink_add_internal (GstMultiUDPSink * sink, const gchar * host,
gint port, gboolean lock)
{
GSocketFamily family;
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) {
find = g_list_find_custom (sink->clients_to_be_removed, &udpclient,
(GCompareFunc) client_compare);
if (find)
gst_udp_client_ref (find->data);
}
if (find) {
client = (GstUDPClient *) find->data;
family = g_socket_address_get_family (client->addr);
GST_DEBUG_OBJECT (sink, "found %d existing clients with host %s, port %d",
client->add_count, host, port);
} else {
client = gst_udp_client_new (sink, host, port);
if (!client)
goto error;
family = g_socket_address_get_family (client->addr);
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);
/* keep IPv4 clients at the beginning, and IPv6 at the end, we can make
* use of this in gst_multiudpsink_render_buffers() */
sink->clients = g_list_insert_sorted (sink->clients, client,
(GCompareFunc) gst_udp_client_compare_socket_family);
if (family == G_SOCKET_FAMILY_IPV4)
++sink->num_v4_unique;
else
++sink->num_v6_unique;
}
++client->add_count;
if (family == G_SOCKET_FAMILY_IPV4)
++sink->num_v4_all;
else
++sink->num_v6_all;
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)
{
GSocketFamily family;
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->add_count, host, port);
--client->add_count;
family = g_socket_address_get_family (client->addr);
if (family == G_SOCKET_FAMILY_IPV4)
--sink->num_v4_all;
else
--sink->num_v6_all;
if (client->add_count == 0) {
GInetSocketAddress *saddr = G_INET_SOCKET_ADDRESS (client->addr);
GInetAddress *addr = g_inet_socket_address_get_address (saddr);
GSocket *socket;
/* Select socket to send from for this address */
if (family == G_SOCKET_FAMILY_IPV6 || !sink->used_socket)
socket = sink->used_socket_v6;
else
socket = sink->used_socket;
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 (socket && sink->auto_multicast
&& g_inet_address_get_is_multicast (addr)) {
GError *err = NULL;
if (!g_socket_leave_multicast_group (socket, addr, FALSE,
sink->multi_iface, &err)) {
GST_DEBUG_OBJECT (sink, "Failed to leave multicast group: %s",
err->message);
g_clear_error (&err);
}
}
if (family == G_SOCKET_FAMILY_IPV4)
--sink->num_v4_unique;
else
--sink->num_v6_unique;
/* Keep state consistent for streaming thread, so remove from client list,
* but keep it around until after the signal has been emitted, in case a
* callback wants to get stats for that client or so */
sink->clients = g_list_delete_link (sink->clients, find);
sink->clients_to_be_removed =
g_list_prepend (sink->clients_to_be_removed, client);
/* 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_to_be_removed =
g_list_remove (sink->clients_to_be_removed, client);
gst_udp_client_unref (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) gst_udp_client_unref, sink);
g_list_free (sink->clients);
sink->clients = NULL;
sink->num_v4_unique = 0;
sink->num_v4_all = 0;
sink->num_v6_unique = 0;
sink->num_v6_all = 0;
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)
find = g_list_find_custom (sink->clients_to_be_removed, &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_object_unref (sink->cancellable);
sink->cancellable = g_cancellable_new ();
return TRUE;
}
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