gstreamer/gst/udp/gstudpsink.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#include "gstudpsink.h"
#define UDP_DEFAULT_HOST "localhost"
#define UDP_DEFAULT_PORT 4951
/* elementfactory information */
GstElementDetails gst_udpsink_details = {
"UDP packet sender",
"Sink/Network",
"",
VERSION,
"Wim Taymans <wim.taymans@chello.be>",
"(C) 2001",
};
/* UDPSink signals and args */
enum {
FRAME_ENCODED,
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_HOST,
ARG_PORT,
/* FILL ME */
};
static void gst_udpsink_class_init (GstUDPSink *klass);
static void gst_udpsink_init (GstUDPSink *udpsink);
static void gst_udpsink_chain (GstPad *pad,GstBuffer *buf);
static GstElementStateReturn gst_udpsink_change_state (GstElement *element);
static void gst_udpsink_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_udpsink_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstElementClass *parent_class = NULL;
/*static guint gst_udpsink_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_udpsink_get_type (void)
{
static GType udpsink_type = 0;
if (!udpsink_type) {
static const GTypeInfo udpsink_info = {
sizeof(GstUDPSinkClass),
NULL,
NULL,
(GClassInitFunc)gst_udpsink_class_init,
NULL,
NULL,
sizeof(GstUDPSink),
0,
(GInstanceInitFunc)gst_udpsink_init,
NULL
};
udpsink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstUDPSink", &udpsink_info, 0);
}
return udpsink_type;
}
static void
gst_udpsink_class_init (GstUDPSink *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*) klass;
gstelement_class = (GstElementClass*) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HOST,
g_param_spec_string ("host", "nost", "The host to send the packets to",
UDP_DEFAULT_HOST, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PORT,
g_param_spec_int ("port", "port", "The port to send the packets to",
0, 32768, UDP_DEFAULT_PORT, G_PARAM_READWRITE));
gobject_class->set_property = gst_udpsink_set_property;
gobject_class->get_property = gst_udpsink_get_property;
gstelement_class->change_state = gst_udpsink_change_state;
}
static GstPadConnectReturn
gst_udpsink_sinkconnect (GstPad *pad, GstCaps *caps)
{
GstUDPSink *udpsink;
struct sockaddr_in serv_addr;
struct hostent *serverhost;
int fd;
FILE *f;
#ifndef GST_DISABLE_LOADSAVE
xmlDocPtr doc;
#endif
udpsink = GST_UDPSINK (gst_pad_get_parent (pad));
fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (fd < 0) {
perror("socket");
return GST_PAD_CONNECT_REFUSED;
}
memset(&serv_addr, 0, sizeof(serv_addr));
/* its a name rather than an ipnum */
serverhost = gethostbyname(udpsink->host);
if (serverhost == (struct hostent *)0) {
perror("gethostbyname");
return GST_PAD_CONNECT_REFUSED;
}
memmove(&serv_addr.sin_addr,serverhost->h_addr, serverhost->h_length);
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(udpsink->port);
if (connect(fd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) != 0) {
g_printerr ("udpsink: connect to %s port %d failed: %s\n",
udpsink->host, udpsink->port, sys_errlist[errno]);
return GST_PAD_CONNECT_REFUSED;
}
f = fdopen (dup (fd), "wb");
#ifndef GST_DISABLE_LOADSAVE
doc = xmlNewDoc ("1.0");
doc->xmlRootNode = xmlNewDocNode (doc, NULL, "NewCaps", NULL);
gst_caps_save_thyself (caps, doc->xmlRootNode);
xmlDocDump(f, doc);
#endif
fclose (f);
close (fd);
return GST_PAD_CONNECT_OK;
}
static void
gst_udpsink_init (GstUDPSink *udpsink)
{
/* create the sink and src pads */
udpsink->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (udpsink), udpsink->sinkpad);
gst_pad_set_chain_function (udpsink->sinkpad, gst_udpsink_chain);
gst_pad_set_connect_function (udpsink->sinkpad, gst_udpsink_sinkconnect);
udpsink->host = g_strdup (UDP_DEFAULT_HOST);
udpsink->port = UDP_DEFAULT_PORT;
}
static void
gst_udpsink_chain (GstPad *pad, GstBuffer *buf)
{
GstUDPSink *udpsink;
int tolen;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
udpsink = GST_UDPSINK (GST_OBJECT_PARENT (pad));
tolen = sizeof(udpsink->theiraddr);
if (sendto (udpsink->sock, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), 0,
(struct sockaddr *) &udpsink->theiraddr, tolen) == -1)
{
perror("sending");
}
gst_buffer_unref(buf);
}
static void
gst_udpsink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstUDPSink *udpsink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_UDPSINK(object));
udpsink = GST_UDPSINK(object);
switch (prop_id) {
case ARG_HOST:
if (udpsink->host != NULL) g_free(udpsink->host);
if (g_value_get_string (value) == NULL)
udpsink->host = NULL;
else
udpsink->host = g_strdup (g_value_get_string (value));
break;
case ARG_PORT:
udpsink->port = g_value_get_int (value);
break;
default:
break;
}
}
static void
gst_udpsink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstUDPSink *udpsink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_UDPSINK(object));
udpsink = GST_UDPSINK(object);
switch (prop_id) {
case ARG_HOST:
g_value_set_string (value, udpsink->host);
break;
case ARG_PORT:
g_value_set_int (value, udpsink->port);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* create a socket for sending to remote machine */
static gboolean
gst_udpsink_init_send (GstUDPSink *sink)
{
struct hostent *he;
bzero (&sink->theiraddr, sizeof (sink->theiraddr));
sink->theiraddr.sin_family = AF_INET; /* host byte order */
sink->theiraddr.sin_port = htons (sink->port); /* short, network byte order */
if ((he = gethostbyname (sink->host)) == NULL) {
perror("gethostbyname");
return FALSE;
}
sink->theiraddr.sin_addr = *((struct in_addr *) he->h_addr);
if ((sink->sock = socket (AF_INET, SOCK_DGRAM, 0)) == -1) {
perror("socket");
return FALSE;
}
GST_FLAG_SET (sink, GST_UDPSINK_OPEN);
return TRUE;
}
static void
gst_udpsink_close (GstUDPSink *sink)
{
close (sink->sock);
GST_FLAG_UNSET (sink, GST_UDPSINK_OPEN);
}
static GstElementStateReturn
gst_udpsink_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_UDPSINK (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_UDPSINK_OPEN))
gst_udpsink_close (GST_UDPSINK (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_UDPSINK_OPEN)) {
if (!gst_udpsink_init_send (GST_UDPSINK (element)))
return GST_STATE_FAILURE;
}
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}