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gstreamer/gst/udp/gstmultiudpsink.c
Tim-Philipp Müller db688c5504 docs: fix typos
2018-05-23 13:14:27 +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 emitted 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 emitted 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_static_pad_template (gstelement_class, &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_create_cancellable (GstMultiUDPSink * sink)
{
GPollFD pollfd;
sink->cancellable = g_cancellable_new ();
sink->made_cancel_fd = g_cancellable_make_pollfd (sink->cancellable, &pollfd);
}
static void
gst_multiudpsink_free_cancellable (GstMultiUDPSink * sink)
{
if (sink->made_cancel_fd) {
g_cancellable_release_fd (sink->cancellable);
sink->made_cancel_fd = FALSE;
}
g_object_unref (sink->cancellable);
sink->cancellable = NULL;
}
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);
gst_multiudpsink_create_cancellable (sink);
/* 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_clear_error (&err);
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;
gst_multiudpsink_free_cancellable (sink);
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 GstFlowReturn
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)) {
GstFlowReturn flow_ret;
g_clear_error (&err);
flow_ret = gst_base_sink_wait_preroll (GST_BASE_SINK (sink));
if (flow_ret == GST_FLOW_OK)
continue;
return flow_ret;
}
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 GST_FLOW_OK;
}
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;
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].bytes_sent = 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! */
/* no IPv4 socket? Send it all from the IPv6 socket then.. */
if (sink->used_socket == NULL) {
flow_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 */
flow_ret = gst_multiudpsink_send_messages (sink, sink->used_socket,
msgs, num_msgs_v4);
if (flow_ret != GST_FLOW_OK)
goto cancelled;
flow_ret = gst_multiudpsink_send_messages (sink, sink->used_socket_v6,
msgs + num_msgs_v4, num_msgs_v6);
}
if (flow_ret != GST_FLOW_OK)
goto cancelled;
/* 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_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 (g_socket_get_family (socket) == G_SOCKET_FAMILY_IPV6) {
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 (!sink->socket || 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);
g_object_unref (bind_addr);
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);
gst_multiudpsink_free_cancellable (sink);
gst_multiudpsink_create_cancellable (sink);
return TRUE;
}
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