static void
gst_udpsink_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstUDPSink *udpsink;
udpsink = GST_UDPSINK (object);
/* remove old host */
gst_multiudpsink_remove (GST_MULTIUDPSINK (udpsink),
udpsink->host, udpsink->port);
switch (prop_id) {
case PROP_HOST:
g_free (udpsink->host);
udpsink->host = g_value_dup_string (value);
break;
case PROP_PORT:
udpsink->port = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
/* add new host */
gst_multiudpsink_add (GST_MULTIUDPSINK (udpsink),
udpsink->host, udpsink->port);
}
static void
gst_multiudpsink_finalize (GObject * object)
{
GstMultiUDPSink *sink;
sink = GST_MULTIUDPSINK (object);
g_list_foreach (sink->clients, (GFunc) free_client, NULL);
g_list_free (sink->clients);
if (sink->socket)
g_object_unref (sink->socket);
sink->socket = NULL;
if (sink->used_socket)
g_object_unref (sink->used_socket);
sink->used_socket = NULL;
if (sink->cancellable)
g_object_unref (sink->cancellable);
sink->cancellable = NULL;
g_mutex_clear (&sink->client_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
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;
}
}
static void
gst_udpsink_init (GstUDPSink * udpsink)
{
udpsink->host = g_strdup (UDP_DEFAULT_HOST);
udpsink->port = UDP_DEFAULT_PORT;
gst_multiudpsink_add (GST_MULTIUDPSINK (udpsink), udpsink->host,
udpsink->port);
}
static void
gst_multiudpsink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstMultiUDPSink *udpsink;
udpsink = GST_MULTIUDPSINK (object);
switch (prop_id) {
case PROP_SOCKET:
if (udpsink->socket != NULL && udpsink->socket != udpsink->used_socket &&
udpsink->close_socket) {
GError *err = NULL;
if (!g_socket_close (udpsink->socket, &err)) {
GST_ERROR ("failed to close socket %p: %s", udpsink->socket,
err->message);
g_clear_error (&err);
}
}
if (udpsink->socket)
g_object_unref (udpsink->socket);
udpsink->socket = g_value_dup_object (value);
GST_DEBUG_OBJECT (udpsink, "setting socket to %p", udpsink->socket);
break;
case PROP_CLOSE_SOCKET:
udpsink->close_socket = g_value_get_boolean (value);
break;
case PROP_CLIENTS:
gst_multiudpsink_set_clients_string (udpsink, g_value_get_string (value));
break;
case PROP_AUTO_MULTICAST:
udpsink->auto_multicast = g_value_get_boolean (value);
break;
case PROP_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 gboolean
gst_udpsink_set_uri (GstUDPSink * sink, const gchar * uri)
{
gchar *protocol;
gchar *location;
gchar *colptr;
protocol = gst_uri_get_protocol (uri);
if (strcmp (protocol, "udp") != 0)
goto wrong_protocol;
g_free (protocol);
location = gst_uri_get_location (uri);
if (!location)
return FALSE;
colptr = strstr (location, ":");
gst_multiudpsink_remove (GST_MULTIUDPSINK (sink), sink->host, sink->port);
if (colptr != NULL) {
g_free (sink->host);
sink->host = g_strndup (location, colptr - location);
sink->port = atoi (colptr + 1);
} else {
g_free (sink->host);
sink->host = g_strdup (location);
sink->port = UDP_DEFAULT_PORT;
}
g_free (location);
gst_multiudpsink_add (GST_MULTIUDPSINK (sink), sink->host, sink->port);
gst_udpsink_update_uri (sink);
return TRUE;
/* ERRORS */
wrong_protocol:
{
g_free (protocol);
GST_ELEMENT_ERROR (sink, RESOURCE, READ, (NULL),
("error parsing uri %s: wrong protocol (%s != udp)", uri, protocol));
return FALSE;
}
}
static void
gst_udpsink_init (GstUDPSink * udpsink, GstUDPSinkClass * klass)
{
udpsink->host = g_strdup (UDP_DEFAULT_HOST);
udpsink->port = UDP_DEFAULT_PORT;
udpsink->uri = g_strdup_printf ("udp://%s:%d", udpsink->host, udpsink->port);
gst_multiudpsink_add (GST_MULTIUDPSINK (udpsink), udpsink->host,
udpsink->port);
}
static void
gst_multiudpsink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstMultiUDPSink *udpsink;
udpsink = GST_MULTIUDPSINK (object);
switch (prop_id) {
case PROP_BYTES_TO_SERVE:
g_value_set_uint64 (value, udpsink->bytes_to_serve);
break;
case PROP_BYTES_SERVED:
g_value_set_uint64 (value, udpsink->bytes_served);
break;
case PROP_SOCKET:
g_value_set_object (value, udpsink->socket);
break;
case PROP_CLOSE_SOCKET:
g_value_set_boolean (value, udpsink->close_socket);
break;
case PROP_USED_SOCKET:
g_value_set_object (value, udpsink->used_socket);
break;
case PROP_CLIENTS:
g_value_take_string (value,
gst_multiudpsink_get_clients_string (udpsink));
break;
case PROP_AUTO_MULTICAST:
g_value_set_boolean (value, udpsink->auto_multicast);
break;
case PROP_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_unlock_stop (GstBaseSink * bsink)
{
GstMultiUDPSink *sink;
sink = GST_MULTIUDPSINK (bsink);
g_cancellable_reset (sink->cancellable);
return TRUE;
}
static gboolean
gst_udpsink_set_uri (GstUDPSink * sink, const gchar * uri)
{
gst_multiudpsink_remove (GST_MULTIUDPSINK (sink), sink->host, sink->port);
if (!gst_udp_parse_uri (uri, &sink->host, &sink->port))
goto wrong_uri;
g_free (sink->uri);
sink->uri = g_strdup (uri);
gst_multiudpsink_add (GST_MULTIUDPSINK (sink), sink->host, sink->port);
return TRUE;
/* ERRORS */
wrong_uri:
{
GST_ELEMENT_ERROR (sink, RESOURCE, READ, (NULL),
("error parsing uri %s", uri));
return FALSE;
}
}
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_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
gst_multiudpsink_stop (GstBaseSink * bsink)
{
GstMultiUDPSink *udpsink;
udpsink = GST_MULTIUDPSINK (bsink);
if (udpsink->used_socket) {
if (udpsink->close_socket || !udpsink->external_socket) {
GError *err = NULL;
if (!g_socket_close (udpsink->used_socket, &err)) {
GST_ERROR_OBJECT (udpsink, "Failed to close socket: %s", err->message);
g_clear_error (&err);
}
}
g_object_unref (udpsink->used_socket);
udpsink->used_socket = NULL;
}
return TRUE;
}
static GstFlowReturn
gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstMultiUDPSink *sink;
GList *clients;
GOutputVector *vec;
GstMapInfo *map;
guint n_mem, i;
gsize size;
GstMemory *mem;
gint num, no_clients;
GError *err = NULL;
sink = GST_MULTIUDPSINK (bsink);
n_mem = gst_buffer_n_memory (buffer);
if (n_mem == 0)
goto no_data;
vec = g_new (GOutputVector, n_mem);
map = g_new (GstMapInfo, n_mem);
size = 0;
for (i = 0; i < n_mem; i++) {
mem = gst_buffer_get_memory (buffer, i);
gst_memory_map (mem, &map[i], GST_MAP_READ);
if (map[i].size > UDP_MAX_SIZE) {
GST_WARNING ("Attempting to send a UDP packet larger than maximum "
"size (%" G_GSIZE_FORMAT " > %d)", map[i].size, UDP_MAX_SIZE);
}
vec[i].buffer = map[i].data;
vec[i].size = map[i].size;
size += map[i].size;
}
sink->bytes_to_serve += size;
/* grab lock while iterating and sending to clients, this should be
* fast as UDP never blocks */
g_mutex_lock (&sink->client_lock);
GST_LOG_OBJECT (bsink, "about to send %" G_GSIZE_FORMAT " bytes", size);
no_clients = 0;
num = 0;
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
GstUDPClient *client;
gint count;
client = (GstUDPClient *) clients->data;
no_clients++;
GST_LOG_OBJECT (sink, "sending %" G_GSIZE_FORMAT " bytes to client %p",
size, client);
count = sink->send_duplicates ? client->refcount : 1;
while (count--) {
gssize ret;
ret =
g_socket_send_message (sink->used_socket, client->addr, vec, n_mem,
NULL, 0, 0, sink->cancellable, &err);
if (ret < 0)
goto send_error;
num++;
client->bytes_sent += ret;
client->packets_sent++;
sink->bytes_served += ret;
}
}
g_mutex_unlock (&sink->client_lock);
/* unmap all memory again */
for (i = 0; i < n_mem; i++) {
gst_memory_unmap (map[i].memory, &map[i]);
gst_memory_unref (map[i].memory);
}
g_free (vec);
g_free (map);
GST_LOG_OBJECT (sink, "sent %" G_GSIZE_FORMAT " bytes to %d (of %d) clients",
size, num, no_clients);
return GST_FLOW_OK;
no_data:
{
return GST_FLOW_OK;
}
send_error:
{
g_mutex_unlock (&sink->client_lock);
GST_DEBUG ("got send error %s", err->message);
g_clear_error (&err);
return GST_FLOW_ERROR;
}
}
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;
}
/* create a socket for sending to remote machine */
static gboolean
gst_multiudpsink_start (GstBaseSink * bsink)
{
GstMultiUDPSink *sink;
GList *clients;
GstUDPClient *client;
GError *err = NULL;
sink = GST_MULTIUDPSINK (bsink);
sink->external_socket = FALSE;
if (sink->socket) {
GST_DEBUG_OBJECT (sink, "using configured socket");
if (g_socket_get_family (sink->socket) == G_SOCKET_FAMILY_IPV6) {
sink->used_socket_v6 = G_SOCKET (g_object_ref (sink->socket));
sink->external_socket = TRUE;
} else {
sink->used_socket = G_SOCKET (g_object_ref (sink->socket));
sink->external_socket = TRUE;
}
}
if (sink->socket_v6) {
GST_DEBUG_OBJECT (sink, "using configured IPv6 socket");
g_return_val_if_fail (g_socket_get_family (sink->socket) !=
G_SOCKET_FAMILY_IPV6, FALSE);
if (sink->used_socket_v6 && sink->used_socket_v6 != sink->socket_v6) {
GST_ERROR_OBJECT (sink,
"Provided different IPv6 sockets in socket and socket-v6 properties");
return FALSE;
}
sink->used_socket_v6 = G_SOCKET (g_object_ref (sink->socket_v6));
sink->external_socket = TRUE;
}
if (!sink->used_socket && !sink->used_socket_v6) {
GSocketAddress *bind_addr;
GInetAddress *bind_iaddr;
if (sink->bind_address) {
GSocketFamily family;
bind_iaddr = g_inet_address_new_from_string (sink->bind_address);
if (!bind_iaddr) {
GList *results;
GResolver *resolver;
resolver = g_resolver_get_default ();
results =
g_resolver_lookup_by_name (resolver, sink->bind_address,
sink->cancellable, &err);
if (!results) {
g_object_unref (resolver);
goto name_resolve;
}
bind_iaddr = G_INET_ADDRESS (g_object_ref (results->data));
g_resolver_free_addresses (results);
g_object_unref (resolver);
}
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_object_unref (bind_iaddr);
family = g_socket_address_get_family (G_SOCKET_ADDRESS (bind_addr));
if ((sink->used_socket =
g_socket_new (family, G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_UDP, &err)) == NULL) {
g_object_unref (bind_addr);
goto no_socket;
}
g_socket_bind (sink->used_socket, bind_addr, TRUE, &err);
if (err != NULL)
goto bind_error;
} else {
/* create sender sockets if none available */
if ((sink->used_socket = g_socket_new (G_SOCKET_FAMILY_IPV4,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL)
goto no_socket;
bind_iaddr = g_inet_address_new_any (G_SOCKET_FAMILY_IPV4);
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_socket_bind (sink->used_socket, bind_addr, TRUE, &err);
g_object_unref (bind_addr);
g_object_unref (bind_iaddr);
if (err != NULL)
goto bind_error;
if ((sink->used_socket_v6 = g_socket_new (G_SOCKET_FAMILY_IPV6,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP,
&err)) == NULL) {
GST_INFO_OBJECT (sink, "Failed to create IPv6 socket: %s",
err->message);
g_clear_error (&err);
} else {
bind_iaddr = g_inet_address_new_any (G_SOCKET_FAMILY_IPV6);
bind_addr = g_inet_socket_address_new (bind_iaddr, sink->bind_port);
g_socket_bind (sink->used_socket_v6, bind_addr, TRUE, &err);
g_object_unref (bind_addr);
g_object_unref (bind_iaddr);
if (err != NULL)
goto bind_error;
}
}
}
#ifdef SO_SNDBUF
{
socklen_t len;
gint sndsize, ret;
len = sizeof (sndsize);
if (sink->buffer_size != 0) {
sndsize = sink->buffer_size;
GST_DEBUG_OBJECT (sink, "setting udp buffer of %d bytes", sndsize);
/* set buffer size, Note that on Linux this is typically limited to a
* maximum of around 100K. Also a minimum of 128 bytes is required on
* Linux. */
if (sink->used_socket) {
ret =
setsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, len);
if (ret != 0) {
GST_ELEMENT_WARNING (sink, RESOURCE, SETTINGS, (NULL),
("Could not create a buffer of requested %d bytes, %d: %s",
sndsize, ret, g_strerror (errno)));
}
}
if (sink->used_socket_v6) {
ret =
setsockopt (g_socket_get_fd (sink->used_socket_v6), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, len);
if (ret != 0) {
GST_ELEMENT_WARNING (sink, RESOURCE, SETTINGS, (NULL),
("Could not create a buffer of requested %d bytes, %d: %s",
sndsize, ret, g_strerror (errno)));
}
}
}
/* read the value of the receive buffer. Note that on linux this returns 2x the
* value we set because the kernel allocates extra memory for metadata.
* The default on Linux is about 100K (which is about 50K without metadata) */
if (sink->used_socket) {
ret =
getsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, &len);
if (ret == 0)
GST_DEBUG_OBJECT (sink, "have UDP buffer of %d bytes", sndsize);
else
GST_DEBUG_OBJECT (sink, "could not get UDP buffer size");
}
if (sink->used_socket_v6) {
ret =
getsockopt (g_socket_get_fd (sink->used_socket_v6), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, &len);
if (ret == 0)
GST_DEBUG_OBJECT (sink, "have UDPv6 buffer of %d bytes", sndsize);
else
GST_DEBUG_OBJECT (sink, "could not get UDPv6 buffer size");
}
}
#endif
#ifdef SO_BINDTODEVICE
if (sink->multi_iface) {
if (sink->used_socket) {
setsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET,
SO_BINDTODEVICE, sink->multi_iface, strlen (sink->multi_iface));
}
if (sink->used_socket_v6) {
setsockopt (g_socket_get_fd (sink->used_socket_v6), SOL_SOCKET,
SO_BINDTODEVICE, sink->multi_iface, strlen (sink->multi_iface));
}
}
#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 GstFlowReturn
gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstMultiUDPSink *sink;
GList *clients;
GOutputVector *vec;
GstMapInfo *map;
guint n_mem, i;
gsize size;
GstMemory *mem;
gint num, no_clients;
GError *err = NULL;
sink = GST_MULTIUDPSINK (bsink);
n_mem = gst_buffer_n_memory (buffer);
if (n_mem == 0)
goto no_data;
/* allocated on the stack, the max number of memory blocks is limited so this
* should not cause stack overflows */
vec = sink->vec;
map = sink->map;
size = 0;
for (i = 0; i < n_mem; i++) {
mem = gst_buffer_get_memory (buffer, i);
gst_memory_map (mem, &map[i], GST_MAP_READ);
vec[i].buffer = map[i].data;
vec[i].size = map[i].size;
size += map[i].size;
}
sink->bytes_to_serve += size;
/* grab lock while iterating and sending to clients, this should be
* fast as UDP never blocks */
g_mutex_lock (&sink->client_lock);
GST_LOG_OBJECT (bsink, "about to send %" G_GSIZE_FORMAT " bytes in %u blocks",
size, n_mem);
no_clients = 0;
num = 0;
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
GstUDPClient *client;
GSocket *socket;
GSocketFamily family;
gint count;
client = (GstUDPClient *) clients->data;
no_clients++;
GST_LOG_OBJECT (sink, "sending %" G_GSIZE_FORMAT " bytes to client %p",
size, client);
family = g_socket_address_get_family (G_SOCKET_ADDRESS (client->addr));
/* 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;
count = sink->send_duplicates ? client->refcount : 1;
while (count--) {
gssize ret;
ret =
g_socket_send_message (socket, client->addr, vec, n_mem,
NULL, 0, 0, sink->cancellable, &err);
if (G_UNLIKELY (ret < 0)) {
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
goto flushing;
/* we continue after posting a warning, next packets might be ok
* again */
if (size > UDP_MAX_SIZE) {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Attempting to send a UDP packet larger than maximum size "
"(%" G_GSIZE_FORMAT " > %d)", size, UDP_MAX_SIZE),
("Reason: %s", err ? err->message : "unknown reason"));
} else {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Error sending UDP packet"), ("Reason: %s",
err ? err->message : "unknown reason"));
}
g_clear_error (&err);
} else {
num++;
client->bytes_sent += ret;
client->packets_sent++;
sink->bytes_served += ret;
}
}
}
g_mutex_unlock (&sink->client_lock);
/* unmap all memory again */
for (i = 0; i < n_mem; i++) {
gst_memory_unmap (map[i].memory, &map[i]);
gst_memory_unref (map[i].memory);
}
GST_LOG_OBJECT (sink, "sent %" G_GSIZE_FORMAT " bytes to %d (of %d) clients",
size, num, no_clients);
return GST_FLOW_OK;
no_data:
{
return GST_FLOW_OK;
}
flushing:
{
GST_DEBUG ("we are flushing");
g_mutex_unlock (&sink->client_lock);
g_clear_error (&err);
/* unmap all memory */
for (i = 0; i < n_mem; i++) {
gst_memory_unmap (map[i].memory, &map[i]);
gst_memory_unref (map[i].memory);
}
return GST_FLOW_FLUSHING;
}
}
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;
}
/* create a socket for sending to remote machine */
static gboolean
gst_multiudpsink_start (GstBaseSink * bsink)
{
GstMultiUDPSink *sink;
GList *clients;
GstUDPClient *client;
GError *err = NULL;
sink = GST_MULTIUDPSINK (bsink);
if (sink->socket == NULL) {
GST_DEBUG_OBJECT (sink, "creating sockets");
/* create sender socket try IP6, fall back to IP4 */
sink->family = G_SOCKET_FAMILY_IPV6;
if ((sink->used_socket =
g_socket_new (G_SOCKET_FAMILY_IPV6,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL) {
sink->family = G_SOCKET_FAMILY_IPV4;
if ((sink->used_socket = g_socket_new (G_SOCKET_FAMILY_IPV4,
G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, &err)) == NULL)
goto no_socket;
}
GST_DEBUG_OBJECT (sink, "have socket");
sink->external_socket = FALSE;
} else {
GST_DEBUG_OBJECT (sink, "using configured socket");
/* we use the configured socket */
sink->used_socket = G_SOCKET (g_object_ref (sink->socket));
sink->family = g_socket_get_family (sink->used_socket);
sink->external_socket = TRUE;
}
#ifdef SO_SNDBUF
{
socklen_t len;
gint sndsize, ret;
len = sizeof (sndsize);
if (sink->buffer_size != 0) {
sndsize = sink->buffer_size;
GST_DEBUG_OBJECT (sink, "setting udp buffer of %d bytes", sndsize);
/* set buffer size, Note that on Linux this is typically limited to a
* maximum of around 100K. Also a minimum of 128 bytes is required on
* Linux. */
ret =
setsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET,
SO_SNDBUF, (void *) &sndsize, len);
if (ret != 0) {
GST_ELEMENT_WARNING (sink, RESOURCE, SETTINGS, (NULL),
("Could not create a buffer of requested %d bytes, %d: %s",
sndsize, ret, g_strerror (errno)));
}
}
/* read the value of the receive buffer. Note that on linux this returns 2x the
* value we set because the kernel allocates extra memory for metadata.
* The default on Linux is about 100K (which is about 50K without metadata) */
ret =
getsockopt (g_socket_get_fd (sink->used_socket), SOL_SOCKET, SO_SNDBUF,
(void *) &sndsize, &len);
if (ret == 0)
GST_DEBUG_OBJECT (sink, "have udp buffer of %d bytes", sndsize);
else
GST_DEBUG_OBJECT (sink, "could not get udp buffer size");
}
#endif
g_socket_set_broadcast (sink->used_socket, TRUE);
sink->bytes_to_serve = 0;
sink->bytes_served = 0;
gst_multiudpsink_setup_qos_dscp (sink);
/* look for multicast clients and join multicast groups appropriately
set also ttl and multicast loopback delivery appropriately */
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
client = (GstUDPClient *) clients->data;
if (!gst_multiudpsink_configure_client (sink, client))
return FALSE;
}
return TRUE;
/* ERRORS */
no_socket:
{
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (NULL),
("Could not create socket: %s", err->message));
g_clear_error (&err);
return FALSE;
}
}
