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gstreamer/gst/udp/gstmultiudpsink.c

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/* GStreamer
* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
* Copyright (C) <2009> Jarkko Palviainen <jarkko.palviainen@sesca.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-multiudpsink
* @see_also: udpsink, multifdsink
*
* multiudpsink is a network sink that sends UDP packets to multiple
* clients.
* It can be combined with rtp payload encoders to implement RTP streaming.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstudp-marshal.h"
#include "gstmultiudpsink.h"
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <errno.h>
#include <string.h>
#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_SOCKFD -1
#define DEFAULT_CLOSEFD TRUE
#define DEFAULT_SOCK -1
#define DEFAULT_CLIENTS NULL
#define DEFAULT_FAMILY 0
/* FIXME, this should be disabled by default, we don't need to join a multicast
* group for sending, if this socket is also used for receiving, it should
* be configured in the element that does the receive. */
#define DEFAULT_AUTO_MULTICAST TRUE
#define DEFAULT_TTL 64
#define DEFAULT_TTL_MC 1
#define DEFAULT_LOOP TRUE
#define DEFAULT_QOS_DSCP -1
#define DEFAULT_SEND_DUPLICATES TRUE
#define DEFAULT_BUFFER_SIZE 0
enum
{
PROP_0,
PROP_BYTES_TO_SERVE,
PROP_BYTES_SERVED,
PROP_SOCKFD,
PROP_CLOSEFD,
PROP_SOCK,
PROP_CLIENTS,
PROP_AUTO_MULTICAST,
PROP_TTL,
PROP_TTL_MC,
PROP_LOOP,
PROP_QOS_DSCP,
PROP_SEND_DUPLICATES,
PROP_BUFFER_SIZE,
PROP_LAST
};
#define CLOSE_IF_REQUESTED(udpctx) \
G_STMT_START { \
if ((!udpctx->externalfd) || (udpctx->externalfd && udpctx->closefd)) { \
CLOSE_SOCKET(udpctx->sock); \
if (udpctx->sock == udpctx->sockfd) \
udpctx->sockfd = DEFAULT_SOCKFD; \
} \
udpctx->sock = DEFAULT_SOCK; \
} G_STMT_END
static void gst_multiudpsink_base_init (gpointer g_class);
static void gst_multiudpsink_class_init (GstMultiUDPSinkClass * klass);
static void gst_multiudpsink_init (GstMultiUDPSink * udpsink);
static void gst_multiudpsink_finalize (GObject * object);
static GstFlowReturn gst_multiudpsink_render (GstBaseSink * sink,
GstBuffer * buffer);
#ifndef G_OS_WIN32 /* sendmsg() is not available on Windows */
static GstFlowReturn gst_multiudpsink_render_list (GstBaseSink * bsink,
GstBufferList * list);
#endif
static GstStateChangeReturn gst_multiudpsink_change_state (GstElement *
element, GstStateChange transition);
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 GstElementClass *parent_class = NULL;
static guint gst_multiudpsink_signals[LAST_SIGNAL] = { 0 };
GType
gst_multiudpsink_get_type (void)
{
static GType multiudpsink_type = 0;
if (!multiudpsink_type) {
static const GTypeInfo multiudpsink_info = {
sizeof (GstMultiUDPSinkClass),
gst_multiudpsink_base_init,
NULL,
(GClassInitFunc) gst_multiudpsink_class_init,
NULL,
NULL,
sizeof (GstMultiUDPSink),
0,
(GInstanceInitFunc) gst_multiudpsink_init,
NULL
};
multiudpsink_type =
g_type_register_static (GST_TYPE_BASE_SINK, "GstMultiUDPSink",
&multiudpsink_info, 0);
}
return multiudpsink_type;
}
static void
gst_multiudpsink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_set_details_simple (element_class, "UDP packet sender",
"Sink/Network",
"Send data over the network via UDP",
"Wim Taymans <wim.taymans@gmail.com>");
}
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;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_multiudpsink_set_property;
gobject_class->get_property = gst_multiudpsink_get_property;
gobject_class->finalize = gst_multiudpsink_finalize;
/**
* GstMultiUDPSink::add:
* @gstmultiudpsink: the sink on which the signal is emitted
* @host: the hostname/IP address of the client to add
* @port: the port of the client to add
*
* Add a client with destination @host and @port to the list of
* clients. When the same host/port pair is added multiple times, the
* send-duplicates property defines if the packets are sent multiple times to
* the same host/port pair or not.
*
* When a host/port pair is added multiple times, an equal amount of remove
* calls must be performed to actually remove the host/port pair from the list
* of destinations.
*/
gst_multiudpsink_signals[SIGNAL_ADD] =
g_signal_new ("add", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstMultiUDPSinkClass, add),
NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2,
G_TYPE_STRING, G_TYPE_INT);
/**
* GstMultiUDPSink::remove:
* @gstmultiudpsink: the sink on which the signal is emitted
* @host: the hostname/IP address of the client to remove
* @port: the port of the client to remove
*
* Remove the client with destination @host and @port from the list of
* clients.
*/
gst_multiudpsink_signals[SIGNAL_REMOVE] =
g_signal_new ("remove", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstMultiUDPSinkClass, remove),
NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2,
G_TYPE_STRING, G_TYPE_INT);
/**
* GstMultiUDPSink::clear:
* @gstmultiudpsink: the sink on which the signal is emitted
*
* Clear the list of clients.
*/
gst_multiudpsink_signals[SIGNAL_CLEAR] =
g_signal_new ("clear", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstMultiUDPSinkClass, clear),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
/**
* GstMultiUDPSink::get-stats:
* @gstmultiudpsink: the sink on which the signal is emitted
* @host: the hostname/IP address of the client to get stats on
* @port: the port of the client to get stats on
*
* Get the statistics of the client with destination @host and @port.
*
* Returns: a GValueArray of uint64: bytes_sent, packets_sent,
* connect_time (in epoch seconds), disconnect_time (in epoch seconds)
*/
gst_multiudpsink_signals[SIGNAL_GET_STATS] =
g_signal_new ("get-stats", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstMultiUDPSinkClass, get_stats),
NULL, NULL, gst_udp_marshal_BOXED__STRING_INT, G_TYPE_VALUE_ARRAY, 2,
G_TYPE_STRING, G_TYPE_INT);
/**
* GstMultiUDPSink::client-added:
* @gstmultiudpsink: the sink emitting the signal
* @host: the hostname/IP address of the added client
* @port: the port of the added client
*
* Signal emited when a new client is added to the list of
* clients.
*/
gst_multiudpsink_signals[SIGNAL_CLIENT_ADDED] =
g_signal_new ("client-added", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiUDPSinkClass, client_added),
NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2,
G_TYPE_STRING, G_TYPE_INT);
/**
* GstMultiUDPSink::client-removed:
* @gstmultiudpsink: the sink emitting the signal
* @host: the hostname/IP address of the removed client
* @port: the port of the removed client
*
* Signal emited when a client is removed from the list of
* clients.
*/
gst_multiudpsink_signals[SIGNAL_CLIENT_REMOVED] =
g_signal_new ("client-removed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiUDPSinkClass,
client_removed), NULL, NULL, gst_udp_marshal_VOID__STRING_INT,
G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_INT);
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BYTES_TO_SERVE,
g_param_spec_uint64 ("bytes-to-serve", "Bytes to serve",
"Number of bytes received to serve to clients", 0, G_MAXUINT64, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BYTES_SERVED,
g_param_spec_uint64 ("bytes-served", "Bytes served",
"Total number of bytes sent to all clients", 0, G_MAXUINT64, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SOCKFD,
g_param_spec_int ("sockfd", "Socket Handle",
"Socket to use for UDP sending. (-1 == allocate)",
-1, G_MAXINT, DEFAULT_SOCKFD,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CLOSEFD,
g_param_spec_boolean ("closefd", "Close sockfd",
"Close sockfd if passed as property on state change",
DEFAULT_CLOSEFD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SOCK,
g_param_spec_int ("sock", "Socket Handle",
"Socket currently in use for UDP sending. (-1 == no socket)",
-1, G_MAXINT, DEFAULT_SOCK,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CLIENTS,
g_param_spec_string ("clients", "Clients",
"A comma separated list of host:port pairs with destinations",
DEFAULT_CLIENTS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_AUTO_MULTICAST,
g_param_spec_boolean ("auto-multicast",
"Automatically join/leave multicast groups",
"Automatically join/leave the multicast groups, FALSE means user"
" has to do it himself", DEFAULT_AUTO_MULTICAST,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TTL,
g_param_spec_int ("ttl", "Unicast TTL",
"Used for setting the unicast TTL parameter",
0, 255, DEFAULT_TTL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TTL_MC,
g_param_spec_int ("ttl-mc", "Multicast TTL",
"Used for setting the multicast TTL parameter",
0, 255, DEFAULT_TTL_MC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_LOOP,
g_param_spec_boolean ("loop", "Multicast Loopback",
"Used for setting the multicast loop parameter. TRUE = enable,"
" FALSE = disable", DEFAULT_LOOP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_QOS_DSCP,
g_param_spec_int ("qos-dscp", "QoS diff srv code point",
"Quality of Service, differentiated services code point (-1 default)",
-1, 63, DEFAULT_QOS_DSCP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstMultiUDPSink::send-duplicates
*
* When a host/port pair is added mutliple times, send the packet to the host
* multiple times as well.
*
* Since: 0.10.26
*/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEND_DUPLICATES,
g_param_spec_boolean ("send-duplicates", "Send Duplicates",
"When a distination/port pair is added multiple times, send packets "
"multiple times as well", DEFAULT_SEND_DUPLICATES,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BUFFER_SIZE,
g_param_spec_int ("buffer-size", "Buffer Size",
"Size of the kernel send buffer in bytes, 0=default", 0, G_MAXINT,
DEFAULT_BUFFER_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state = gst_multiudpsink_change_state;
gstbasesink_class->render = gst_multiudpsink_render;
#ifndef G_OS_WIN32
gstbasesink_class->render_list = gst_multiudpsink_render_list;
#endif
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)
{
WSA_STARTUP (sink);
sink->client_lock = g_mutex_new ();
sink->sock = DEFAULT_SOCK;
sink->sockfd = DEFAULT_SOCKFD;
sink->closefd = DEFAULT_CLOSEFD;
sink->externalfd = (sink->sockfd != -1);
sink->auto_multicast = DEFAULT_AUTO_MULTICAST;
sink->ttl = DEFAULT_TTL;
sink->ttl_mc = DEFAULT_TTL_MC;
sink->loop = DEFAULT_LOOP;
sink->qos_dscp = DEFAULT_QOS_DSCP;
sink->ss_family = DEFAULT_FAMILY;
sink->send_duplicates = DEFAULT_SEND_DUPLICATES;
}
static GstUDPClient *
create_client (GstMultiUDPSink * sink, const gchar * host, gint port)
{
GstUDPClient *client;
client = g_slice_new0 (GstUDPClient);
client->refcount = 1;
client->host = g_strdup (host);
client->port = port;
return client;
}
static void
free_client (GstUDPClient * client)
{
g_free (client->host);
g_slice_free (GstUDPClient, client);
}
static gint
client_compare (GstUDPClient * a, GstUDPClient * b)
{
if ((a->port == b->port) && (strcmp (a->host, b->host) == 0))
return 0;
return 1;
}
static void
gst_multiudpsink_finalize (GObject * object)
{
GstMultiUDPSink *sink;
sink = GST_MULTIUDPSINK (object);
g_list_foreach (sink->clients, (GFunc) free_client, NULL);
g_list_free (sink->clients);
if (sink->sockfd >= 0 && sink->closefd)
CLOSE_SOCKET (sink->sockfd);
g_mutex_free (sink->client_lock);
WSA_CLEANUP (object);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
socket_error_is_ignorable (void)
{
#ifdef G_OS_WIN32
/* Windows doesn't seem to have an EAGAIN for sockets */
return WSAGetLastError () == WSAEINTR;
#else
return errno == EINTR || errno == EAGAIN;
#endif
}
static int
socket_last_error_code (void)
{
#ifdef G_OS_WIN32
return WSAGetLastError ();
#else
return errno;
#endif
}
static gchar *
socket_last_error_message (void)
{
#ifdef G_OS_WIN32
int errorcode = WSAGetLastError ();
wchar_t buf[1024];
DWORD result =
FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, errorcode, 0, (LPSTR) buf, sizeof (buf) / sizeof (wchar_t), NULL);
if (FAILED (result)) {
return g_strdup ("failed to get error message from system");
} else {
gchar *res =
g_convert ((gchar *) buf, -1, "UTF-16", "UTF-8", NULL, NULL, NULL);
/* g_convert() internally calls windows functions which reset the
windows error code, so fix it up again like this */
WSASetLastError (errorcode);
return res;
}
#else
return g_strdup (g_strerror (errno));
#endif
}
static GstFlowReturn
gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstMultiUDPSink *sink;
gint ret, size, num = 0, no_clients = 0;
guint8 *data;
GList *clients;
gint len;
sink = GST_MULTIUDPSINK (bsink);
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
if (size > UDP_MAX_SIZE) {
GST_WARNING ("Attempting to send a UDP packet larger than maximum "
"size (%d > %d)", size, UDP_MAX_SIZE);
}
sink->bytes_to_serve += size;
/* grab lock while iterating and sending to clients, this should be
* fast as UDP never blocks */
g_mutex_lock (sink->client_lock);
GST_LOG_OBJECT (bsink, "about to send %d bytes", size);
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
GstUDPClient *client;
gint count;
client = (GstUDPClient *) clients->data;
no_clients++;
GST_LOG_OBJECT (sink, "sending %d bytes to client %p", size, client);
count = sink->send_duplicates ? client->refcount : 1;
while (count--) {
while (TRUE) {
len = gst_udp_get_sockaddr_length (&client->theiraddr);
ret = sendto (*client->sock,
#ifdef G_OS_WIN32
(char *) data,
#else
data,
#endif
size, 0, (struct sockaddr *) &client->theiraddr, len);
if (ret < 0) {
/* some error, just warn, it's likely recoverable and we don't want to
* break streaming. We break so that we stop retrying for this client. */
if (!socket_error_is_ignorable ()) {
gchar *errormessage = socket_last_error_message ();
GST_WARNING_OBJECT (sink, "client %p gave error %d (%s)", client,
socket_last_error_code (), errormessage);
g_free (errormessage);
break;
}
} else {
num++;
client->bytes_sent += ret;
client->packets_sent++;
sink->bytes_served += ret;
break;
}
}
}
}
g_mutex_unlock (sink->client_lock);
GST_LOG_OBJECT (sink, "sent %d bytes to %d (of %d) clients", size, num,
no_clients);
return GST_FLOW_OK;
}
#ifndef G_OS_WIN32
static GstFlowReturn
gst_multiudpsink_render_list (GstBaseSink * bsink, GstBufferList * list)
{
GstMultiUDPSink *sink;
GList *clients;
gint ret, size = 0, num = 0, no_clients = 0;
struct iovec *iov;
struct msghdr msg = { 0 };
GstBufferListIterator *it;
guint gsize;
GstBuffer *buf;
sink = GST_MULTIUDPSINK (bsink);
g_return_val_if_fail (list != NULL, GST_FLOW_ERROR);
it = gst_buffer_list_iterate (list);
g_return_val_if_fail (it != NULL, GST_FLOW_ERROR);
while (gst_buffer_list_iterator_next_group (it)) {
msg.msg_iovlen = 0;
size = 0;
if ((gsize = gst_buffer_list_iterator_n_buffers (it)) == 0) {
goto invalid_list;
}
iov = (struct iovec *) g_malloc (gsize * sizeof (struct iovec));
msg.msg_iov = iov;
while ((buf = gst_buffer_list_iterator_next (it))) {
if (GST_BUFFER_SIZE (buf) > UDP_MAX_SIZE) {
GST_WARNING ("Attempting to send a UDP packet larger than maximum "
"size (%d > %d)", GST_BUFFER_SIZE (buf), UDP_MAX_SIZE);
}
msg.msg_iov[msg.msg_iovlen].iov_len = GST_BUFFER_SIZE (buf);
msg.msg_iov[msg.msg_iovlen].iov_base = GST_BUFFER_DATA (buf);
msg.msg_iovlen++;
size += GST_BUFFER_SIZE (buf);
}
sink->bytes_to_serve += size;
/* grab lock while iterating and sending to clients, this should be
* fast as UDP never blocks */
g_mutex_lock (sink->client_lock);
GST_LOG_OBJECT (bsink, "about to send %d bytes", size);
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
GstUDPClient *client;
gint count;
client = (GstUDPClient *) clients->data;
no_clients++;
GST_LOG_OBJECT (sink, "sending %d bytes to client %p", size, client);
count = sink->send_duplicates ? client->refcount : 1;
while (count--) {
while (TRUE) {
msg.msg_name = (void *) &client->theiraddr;
msg.msg_namelen = sizeof (client->theiraddr);
ret = sendmsg (*client->sock, &msg, 0);
if (ret < 0) {
if (!socket_error_is_ignorable ()) {
break;
}
} else {
num++;
client->bytes_sent += ret;
client->packets_sent++;
sink->bytes_served += ret;
break;
}
}
}
}
g_mutex_unlock (sink->client_lock);
g_free (iov);
msg.msg_iov = NULL;
GST_LOG_OBJECT (sink, "sent %d bytes to %d (of %d) clients", size, num,
no_clients);
}
gst_buffer_list_iterator_free (it);
return GST_FLOW_OK;
invalid_list:
gst_buffer_list_iterator_free (it);
return GST_FLOW_ERROR;
}
#endif
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;
gint port = 0;
host = clients[i];
p = strstr (clients[i], ":");
if (p != NULL) {
*p = '\0';
port = atoi (p + 1);
}
if (port != 0)
gst_multiudpsink_add_internal (sink, host, port, FALSE);
}
g_mutex_unlock (sink->client_lock);
g_strfreev (clients);
}
static gchar *
gst_multiudpsink_get_clients_string (GstMultiUDPSink * sink)
{
GString *str;
GList *clients;
str = g_string_new ("");
g_mutex_lock (sink->client_lock);
clients = sink->clients;
while (clients) {
GstUDPClient *client;
gint count;
client = (GstUDPClient *) clients->data;
clients = g_list_next (clients);
count = client->refcount;
while (count--) {
g_string_append_printf (str, "%s:%d%s", client->host, client->port,
(clients || count > 1 ? "," : ""));
}
}
g_mutex_unlock (sink->client_lock);
return g_string_free (str, FALSE);
}
static void
gst_multiudpsink_setup_qos_dscp (GstMultiUDPSink * sink)
{
gint tos;
/* don't touch on -1 */
if (sink->qos_dscp < 0)
return;
if (sink->sock < 0)
return;
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 (sink->sock, IPPROTO_IP, IP_TOS, &tos, sizeof (tos)) < 0) {
gchar *errormessage = socket_last_error_message ();
GST_ERROR_OBJECT (sink, "could not set TOS: %s", errormessage);
g_free (errormessage);
}
#ifdef IPV6_TCLASS
if (setsockopt (sink->sock, IPPROTO_IPV6, IPV6_TCLASS, &tos,
sizeof (tos)) < 0) {
gchar *errormessage = socket_last_error_message ();
GST_ERROR_OBJECT (sink, "could not set TCLASS: %s", errormessage);
g_free (errormessage);
}
#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_SOCKFD:
if (udpsink->sockfd >= 0 && udpsink->sockfd != udpsink->sock &&
udpsink->closefd)
CLOSE_SOCKET (udpsink->sockfd);
udpsink->sockfd = g_value_get_int (value);
GST_DEBUG_OBJECT (udpsink, "setting SOCKFD to %d", udpsink->sockfd);
break;
case PROP_CLOSEFD:
udpsink->closefd = g_value_get_boolean (value);
break;
case PROP_CLIENTS:
gst_multiudpsink_set_clients_string (udpsink, g_value_get_string (value));
break;
case PROP_AUTO_MULTICAST:
udpsink->auto_multicast = g_value_get_boolean (value);
break;
case PROP_TTL:
udpsink->ttl = g_value_get_int (value);
break;
case PROP_TTL_MC:
udpsink->ttl_mc = g_value_get_int (value);
break;
case PROP_LOOP:
udpsink->loop = g_value_get_boolean (value);
break;
case PROP_QOS_DSCP:
udpsink->qos_dscp = g_value_get_int (value);
gst_multiudpsink_setup_qos_dscp (udpsink);
break;
case PROP_SEND_DUPLICATES:
udpsink->send_duplicates = g_value_get_boolean (value);
break;
case PROP_BUFFER_SIZE:
udpsink->buffer_size = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_multiudpsink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstMultiUDPSink *udpsink;
udpsink = GST_MULTIUDPSINK (object);
switch (prop_id) {
case PROP_BYTES_TO_SERVE:
g_value_set_uint64 (value, udpsink->bytes_to_serve);
break;
case PROP_BYTES_SERVED:
g_value_set_uint64 (value, udpsink->bytes_served);
break;
case PROP_SOCKFD:
g_value_set_int (value, udpsink->sockfd);
break;
case PROP_CLOSEFD:
g_value_set_boolean (value, udpsink->closefd);
break;
case PROP_SOCK:
g_value_set_int (value, udpsink->sock);
break;
case PROP_CLIENTS:
g_value_take_string (value,
gst_multiudpsink_get_clients_string (udpsink));
break;
case PROP_AUTO_MULTICAST:
g_value_set_boolean (value, udpsink->auto_multicast);
break;
case PROP_TTL:
g_value_set_int (value, udpsink->ttl);
break;
case PROP_TTL_MC:
g_value_set_int (value, udpsink->ttl_mc);
break;
case PROP_LOOP:
g_value_set_boolean (value, udpsink->loop);
break;
case PROP_QOS_DSCP:
g_value_set_int (value, udpsink->qos_dscp);
break;
case PROP_SEND_DUPLICATES:
g_value_set_boolean (value, udpsink->send_duplicates);
break;
case PROP_BUFFER_SIZE:
g_value_set_int (value, udpsink->buffer_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_multiudpsink_configure_client (GstMultiUDPSink * sink,
GstUDPClient * client)
{
GST_DEBUG_OBJECT (sink, "configuring client %p", client);
if (gst_udp_is_multicast (&client->theiraddr)) {
GST_DEBUG_OBJECT (sink, "we have a multicast client %p", client);
if (sink->auto_multicast) {
GST_DEBUG_OBJECT (sink, "autojoining group");
if (gst_udp_join_group (*(client->sock), &client->theiraddr, NULL)
!= 0)
goto join_group_failed;
}
GST_DEBUG_OBJECT (sink, "setting loop to %d", sink->loop);
if (gst_udp_set_loop (sink->sock, sink->ss_family, sink->loop) != 0)
goto loop_failed;
GST_DEBUG_OBJECT (sink, "setting ttl to %d", sink->ttl_mc);
if (gst_udp_set_ttl (sink->sock, sink->ss_family, sink->ttl_mc, TRUE) != 0)
goto ttl_failed;
} else {
GST_DEBUG_OBJECT (sink, "setting unicast ttl to %d", sink->ttl);
if (gst_udp_set_ttl (sink->sock, sink->ss_family, sink->ttl, FALSE) != 0)
goto ttl_failed;
}
return TRUE;
/* ERRORS */
join_group_failed:
{
gchar *errormessage = socket_last_error_message ();
int errorcode = socket_last_error_code ();
CLOSE_IF_REQUESTED (sink);
GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
("Could not join multicast group (%d): %s", errorcode, errormessage));
g_free (errormessage);
return FALSE;
}
ttl_failed:
{
gchar *errormessage = socket_last_error_message ();
int errorcode = socket_last_error_code ();
CLOSE_IF_REQUESTED (sink);
GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
("Could not set TTL socket option (%d): %s", errorcode, errormessage));
g_free (errormessage);
return FALSE;
}
loop_failed:
{
gchar *errormessage = socket_last_error_message ();
int errorcode = socket_last_error_code ();
CLOSE_IF_REQUESTED (sink);
GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
("Could not set loopback socket option (%d): %s",
errorcode, errormessage));
g_free (errormessage);
return FALSE;
}
}
/* create a socket for sending to remote machine */
static gboolean
gst_multiudpsink_init_send (GstMultiUDPSink * sink)
{
guint bc_val;
GList *clients;
GstUDPClient *client;
int sndsize, ret;
socklen_t len;
if (sink->sockfd == -1) {
GST_DEBUG_OBJECT (sink, "creating sockets");
/* create sender socket try IP6, fall back to IP4 */
sink->ss_family = AF_INET6;
if ((sink->sock = socket (AF_INET6, SOCK_DGRAM, 0)) == -1) {
sink->ss_family = AF_INET;
if ((sink->sock = socket (AF_INET, SOCK_DGRAM, 0)) == -1)
goto no_socket;
}
GST_DEBUG_OBJECT (sink, "have socket");
sink->externalfd = FALSE;
} else {
struct sockaddr_storage myaddr;
GST_DEBUG_OBJECT (sink, "using configured socket");
/* we use the configured socket, try to get some info about it */
len = sizeof (myaddr);
if (getsockname (sink->sockfd, (struct sockaddr *) &myaddr, &len) < 0)
goto getsockname_error;
sink->ss_family = myaddr.ss_family;
/* we use the configured socket */
sink->sock = sink->sockfd;
sink->externalfd = TRUE;
}
len = sizeof (sndsize);
if (sink->buffer_size != 0) {
sndsize = sink->buffer_size;
GST_DEBUG_OBJECT (sink, "setting udp buffer of %d bytes", sndsize);
/* set buffer size, Note that on Linux this is typically limited to a
* maximum of around 100K. Also a minimum of 128 bytes is required on
* Linux. */
ret =
setsockopt (sink->sockfd, 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 (%d)",
sndsize, ret, g_strerror (errno), errno));
}
}
/* read the value of the receive buffer. Note that on linux this returns 2x the
* value we set because the kernel allocates extra memory for metadata.
* The default on Linux is about 100K (which is about 50K without metadata) */
ret =
getsockopt (sink->sockfd, 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");
bc_val = 1;
if (setsockopt (sink->sock, SOL_SOCKET, SO_BROADCAST, &bc_val,
sizeof (bc_val)) < 0)
goto no_broadcast;
sink->bytes_to_serve = 0;
sink->bytes_served = 0;
gst_multiudpsink_setup_qos_dscp (sink);
/* look for multicast clients and join multicast groups appropriately
set also ttl and multicast loopback delivery appropriately */
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
client = (GstUDPClient *) clients->data;
if (!gst_multiudpsink_configure_client (sink, client))
return FALSE;
}
return TRUE;
/* ERRORS */
no_socket:
{
gchar *errormessage = socket_last_error_message ();
int errorcode = socket_last_error_code ();
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL),
("Could not create socket (%d): %s", errorcode, errormessage));
g_free (errormessage);
return FALSE;
}
getsockname_error:
{
gchar *errormessage = socket_last_error_message ();
int errorcode = socket_last_error_code ();
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL),
("Could not getsockname (%d): %s", errorcode, errormessage));
g_free (errormessage);
return FALSE;
}
no_broadcast:
{
gchar *errormessage = socket_last_error_message ();
int errorcode = socket_last_error_code ();
CLOSE_IF_REQUESTED (sink);
GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
("Could not set broadcast socket option (%d): %s",
errorcode, errormessage));
g_free (errormessage);
return FALSE;
}
}
static void
gst_multiudpsink_close (GstMultiUDPSink * sink)
{
CLOSE_IF_REQUESTED (sink);
}
static void
gst_multiudpsink_add_internal (GstMultiUDPSink * sink, const gchar * host,
gint port, gboolean lock)
{
GstUDPClient *client;
GstUDPClient udpclient;
GTimeVal now;
GList *find;
udpclient.host = (gchar *) host;
udpclient.port = port;
GST_DEBUG_OBJECT (sink, "adding client on host %s, port %d", host, port);
if (lock)
g_mutex_lock (sink->client_lock);
find = g_list_find_custom (sink->clients, &udpclient,
(GCompareFunc) client_compare);
if (find) {
client = (GstUDPClient *) find->data;
GST_DEBUG_OBJECT (sink, "found %d existing clients with host %s, port %d",
client->refcount, host, port);
client->refcount++;
} else {
client = create_client (sink, host, port);
client->sock = &sink->sock;
if (gst_udp_get_addr (host, port, &client->theiraddr) < 0)
goto getaddrinfo_error;
g_get_current_time (&now);
client->connect_time = GST_TIMEVAL_TO_TIME (now);
if (*client->sock > 0) {
gst_multiudpsink_configure_client (sink, client);
}
GST_DEBUG_OBJECT (sink, "add client with host %s, port %d", host, port);
sink->clients = g_list_prepend (sink->clients, client);
}
if (lock)
g_mutex_unlock (sink->client_lock);
g_signal_emit (G_OBJECT (sink),
gst_multiudpsink_signals[SIGNAL_CLIENT_ADDED], 0, host, port);
GST_DEBUG_OBJECT (sink, "added client on host %s, port %d", host, port);
return;
/* ERRORS */
getaddrinfo_error:
{
GST_DEBUG_OBJECT (sink, "did not add client on host %s, port %d", host,
port);
GST_WARNING_OBJECT (sink, "getaddrinfo lookup error?");
free_client (client);
if (lock)
g_mutex_unlock (sink->client_lock);
return;
}
}
void
gst_multiudpsink_add (GstMultiUDPSink * sink, const gchar * host, gint port)
{
gst_multiudpsink_add_internal (sink, host, port, TRUE);
}
void
gst_multiudpsink_remove (GstMultiUDPSink * sink, const gchar * host, gint port)
{
GList *find;
GstUDPClient udpclient;
GstUDPClient *client;
GTimeVal now;
udpclient.host = (gchar *) host;
udpclient.port = port;
g_mutex_lock (sink->client_lock);
find = g_list_find_custom (sink->clients, &udpclient,
(GCompareFunc) client_compare);
if (!find)
goto not_found;
client = (GstUDPClient *) find->data;
GST_DEBUG_OBJECT (sink, "found %d clients with host %s, port %d",
client->refcount, host, port);
client->refcount--;
if (client->refcount == 0) {
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 (*(client->sock) != -1 && sink->auto_multicast
&& gst_udp_is_multicast (&client->theiraddr))
gst_udp_leave_group (*(client->sock), &client->theiraddr);
/* Unlock to emit signal before we delete the actual client */
g_mutex_unlock (sink->client_lock);
g_signal_emit (G_OBJECT (sink),
gst_multiudpsink_signals[SIGNAL_CLIENT_REMOVED], 0, host, port);
g_mutex_lock (sink->client_lock);
sink->clients = g_list_delete_link (sink->clients, find);
free_client (client);
}
g_mutex_unlock (sink->client_lock);
return;
/* ERRORS */
not_found:
{
g_mutex_unlock (sink->client_lock);
GST_WARNING_OBJECT (sink, "client at host %s, port %d not found",
host, port);
return;
}
}
static void
gst_multiudpsink_clear_internal (GstMultiUDPSink * sink, gboolean lock)
{
GST_DEBUG_OBJECT (sink, "clearing");
/* we only need to remove the client structure, there is no additional
* socket or anything to free for UDP */
if (lock)
g_mutex_lock (sink->client_lock);
g_list_foreach (sink->clients, (GFunc) free_client, sink);
g_list_free (sink->clients);
sink->clients = NULL;
if (lock)
g_mutex_unlock (sink->client_lock);
}
void
gst_multiudpsink_clear (GstMultiUDPSink * sink)
{
gst_multiudpsink_clear_internal (sink, TRUE);
}
GValueArray *
gst_multiudpsink_get_stats (GstMultiUDPSink * sink, const gchar * host,
gint port)
{
GstUDPClient *client;
GValueArray *result = NULL;
GstUDPClient udpclient;
GList *find;
GValue value = { 0 };
udpclient.host = (gchar *) host;
udpclient.port = port;
g_mutex_lock (sink->client_lock);
find = g_list_find_custom (sink->clients, &udpclient,
(GCompareFunc) client_compare);
if (!find)
goto not_found;
GST_DEBUG_OBJECT (sink, "stats for client with host %s, port %d", host, port);
client = (GstUDPClient *) find->data;
/* Result is a value array of (bytes_sent, packets_sent,
* connect_time, disconnect_time), all as uint64 */
result = g_value_array_new (4);
g_value_init (&value, G_TYPE_UINT64);
g_value_set_uint64 (&value, client->bytes_sent);
result = g_value_array_append (result, &value);
g_value_unset (&value);
g_value_init (&value, G_TYPE_UINT64);
g_value_set_uint64 (&value, client->packets_sent);
result = g_value_array_append (result, &value);
g_value_unset (&value);
g_value_init (&value, G_TYPE_UINT64);
g_value_set_uint64 (&value, client->connect_time);
result = g_value_array_append (result, &value);
g_value_unset (&value);
g_value_init (&value, G_TYPE_UINT64);
g_value_set_uint64 (&value, client->disconnect_time);
result = g_value_array_append (result, &value);
g_value_unset (&value);
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 g_value_array_new (0);
}
}
static GstStateChangeReturn
gst_multiudpsink_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstMultiUDPSink *sink;
sink = GST_MULTIUDPSINK (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (!gst_multiudpsink_init_send (sink))
goto no_init;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_multiudpsink_close (sink);
break;
default:
break;
}
return ret;
/* ERRORS */
no_init:
{
/* _init_send() posted specific error already */
return GST_STATE_CHANGE_FAILURE;
}
}
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