gstreamer/gst/udp/gstmultiudpsink.c

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/* GStreamer
* Copyright (C) <2005> Wim Taymans <wim@fluendo.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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstudp-marshal.h"
#include "gstmultiudpsink.h"
GST_DEBUG_CATEGORY (multiudpsink_debug);
#define GST_CAT_DEFAULT (multiudpsink_debug)
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
/* elementfactory information */
static GstElementDetails gst_multiudpsink_details =
GST_ELEMENT_DETAILS ("UDP packet sender",
"Sink/Network",
"Send data over the network via UDP",
"Wim Taymans <wim@fluendo.com>");
/* 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
};
enum
{
PROP_0,
/* FILL ME */
};
static void gst_multiudpsink_base_init (gpointer g_class);
static void gst_multiudpsink_class_init (GstMultiUDPSinkClass * klass);
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static void gst_multiudpsink_init (GstMultiUDPSink * udpsink);
static void gst_multiudpsink_finalize (GObject * object);
static GstFlowReturn gst_multiudpsink_render (GstBaseSink * sink,
GstBuffer * buffer);
static GstStateChangeReturn gst_multiudpsink_change_state (GstElement *
element, GstStateChange transition);
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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 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",
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&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_pad_template (element_class,
gst_static_pad_template_get (&sink_template));
gst_element_class_set_details (element_class, &gst_multiudpsink_details);
}
static void
gst_multiudpsink_class_init (GstMultiUDPSinkClass * klass)
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{
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_ref (GST_TYPE_BASE_SINK);
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gobject_class->set_property = gst_multiudpsink_set_property;
gobject_class->get_property = gst_multiudpsink_get_property;
gobject_class->finalize = gst_multiudpsink_finalize;
gst_multiudpsink_signals[SIGNAL_ADD] =
g_signal_new ("add", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstMultiUDPSinkClass, add),
NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2,
G_TYPE_STRING, G_TYPE_INT);
gst_multiudpsink_signals[SIGNAL_REMOVE] =
g_signal_new ("remove", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstMultiUDPSinkClass, remove),
NULL, NULL, gst_udp_marshal_VOID__STRING_INT, G_TYPE_NONE, 2,
G_TYPE_STRING, G_TYPE_INT);
gst_multiudpsink_signals[SIGNAL_CLEAR] =
g_signal_new ("clear", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstMultiUDPSinkClass, clear),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
gst_multiudpsink_signals[SIGNAL_GET_STATS] =
g_signal_new ("get-stats", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
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);
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);
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);
gstelement_class->change_state = gst_multiudpsink_change_state;
gstbasesink_class->render = gst_multiudpsink_render;
klass->add = gst_multiudpsink_add;
klass->remove = gst_multiudpsink_remove;
klass->clear = gst_multiudpsink_clear;
klass->get_stats = gst_multiudpsink_get_stats;
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GST_DEBUG_CATEGORY_INIT (multiudpsink_debug, "multiudpsink", 0, "UDP sink");
}
static void
gst_multiudpsink_init (GstMultiUDPSink * sink)
{
sink->client_lock = g_mutex_new ();
}
static void
gst_multiudpsink_finalize (GObject * object)
{
GstMultiUDPSink *sink;
sink = GST_MULTIUDPSINK (object);
g_mutex_free (sink->client_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstFlowReturn
gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstMultiUDPSink *sink;
gint ret, size, num = 0;
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guint8 *data;
GList *clients;
sink = GST_MULTIUDPSINK (bsink);
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
g_mutex_lock (sink->client_lock);
GST_LOG_OBJECT (bsink, "about to send %d bytes", size);
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for (clients = sink->clients; clients; clients = g_list_next (clients)) {
GstUDPClient *client;
client = (GstUDPClient *) clients->data;
++num;
GST_LOG_OBJECT (sink, "sending %d bytes to client %p", size, client);
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while (TRUE) {
ret = sendto (*client->sock, data, size, 0,
(struct sockaddr *) &client->theiraddr, sizeof (client->theiraddr));
if (ret < 0) {
if (errno != EINTR && errno != EAGAIN) {
goto send_error;
}
} else
break;
}
}
g_mutex_unlock (sink->client_lock);
GST_LOG_OBJECT (sink, "sent %d bytes to %d clients", size, num);
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return GST_FLOW_OK;
send_error:
{
g_mutex_unlock (sink->client_lock);
GST_DEBUG ("got send error %s (%d)", g_strerror (errno), errno);
return GST_FLOW_ERROR;
}
}
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) {
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) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* create a socket for sending to remote machine */
static gboolean
gst_multiudpsink_init_send (GstMultiUDPSink * sink)
{
guint bc_val;
gint ret;
/* create sender socket */
if ((sink->sock = socket (AF_INET, SOCK_DGRAM, 0)) == -1)
goto no_socket;
bc_val = 1;
if ((ret =
setsockopt (sink->sock, SOL_SOCKET, SO_BROADCAST, &bc_val,
sizeof (bc_val))) < 0)
goto no_broadcast;
return TRUE;
/* ERRORS */
no_socket:
{
perror ("socket");
return FALSE;
}
no_broadcast:
{
perror ("setsockopt");
return FALSE;
}
}
static void
gst_multiudpsink_close (GstMultiUDPSink * sink)
{
close (sink->sock);
}
void
gst_multiudpsink_add (GstMultiUDPSink * sink, const gchar * host, gint port)
{
struct hostent *he;
struct in_addr addr;
struct ip_mreq multi_addr;
GstUDPClient *client;
GST_DEBUG_OBJECT (sink, "adding client on host %s, port %d", host, port);
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client = g_new0 (GstUDPClient, 1);
client->host = g_strdup (host);
client->port = port;
client->sock = &sink->sock;
memset (&client->theiraddr, 0, sizeof (client->theiraddr));
client->theiraddr.sin_family = AF_INET; /* host byte order */
client->theiraddr.sin_port = htons (port); /* short, network byte order */
/* if its an IP address */
if (inet_aton (host, &addr)) {
/* check if its a multicast address */
if ((ntohl (addr.s_addr) & 0xe0000000) == 0xe0000000) {
client->multi_addr.imr_multiaddr.s_addr = addr.s_addr;
client->multi_addr.imr_interface.s_addr = INADDR_ANY;
client->theiraddr.sin_addr = multi_addr.imr_multiaddr;
/* Joining the multicast group */
/* FIXME, can we use multicast and unicast over the same
* socket? if not, search for socket of this multicast group or
* create a new one. */
setsockopt (sink->sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, &multi_addr,
sizeof (multi_addr));
} else {
client->theiraddr.sin_addr = *((struct in_addr *) &addr);
}
}
/* we dont need to lookup for localhost */
else if (strcmp (host, "localhost") == 0 && inet_aton ("127.0.0.1", &addr)) {
client->theiraddr.sin_addr = *((struct in_addr *) &addr);
}
/* if its a hostname */
else if ((he = gethostbyname (host))) {
client->theiraddr.sin_addr = *((struct in_addr *) he->h_addr);
} else {
goto host_error;
}
g_mutex_lock (sink->client_lock);
sink->clients = g_list_prepend (sink->clients, client);
g_mutex_unlock (sink->client_lock);
return;
/* ERRORS */
host_error:
{
GST_DEBUG ("hostname lookup error?");
g_free (client->host);
g_free (client);
return;
}
}
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
free_client (GstUDPClient * client)
{
g_free (client->host);
g_free (client);
}
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void
gst_multiudpsink_remove (GstMultiUDPSink * sink, const gchar * host, gint port)
{
GList *find;
GstUDPClient udpclient;
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) {
GstUDPClient *client;
client = (GstUDPClient *) find->data;
sink->clients = g_list_delete_link (sink->clients, find);
free_client (client);
}
g_mutex_unlock (sink->client_lock);
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}
void
gst_multiudpsink_clear (GstMultiUDPSink * sink)
{
GST_DEBUG_OBJECT (sink, "clearing");
g_mutex_lock (sink->client_lock);
g_list_foreach (sink->clients, (GFunc) free_client, sink);
g_list_free (sink->clients);
sink->clients = NULL;
g_mutex_unlock (sink->client_lock);
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}
GValueArray *
gst_multiudpsink_get_stats (GstMultiUDPSink * sink, const gchar * host,
gint port)
{
return NULL;
}
static GstStateChangeReturn
gst_multiudpsink_change_state (GstElement * element, GstStateChange transition)
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{
GstStateChangeReturn ret;
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GstMultiUDPSink *sink;
sink = GST_MULTIUDPSINK (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
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if (!gst_multiudpsink_init_send (sink))
goto no_init;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
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gst_multiudpsink_close (sink);
break;
default:
break;
}
return ret;
/* ERRORS */
no_init:
{
return GST_STATE_CHANGE_FAILURE;
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}
}