gstreamer/gst/tcp/gsttcpserversink.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
*
* 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 <gst/gst-i18n-plugin.h>
#include <sys/ioctl.h>
#ifdef HAVE_FIONREAD_IN_SYS_FILIO
#include <sys/filio.h>
#endif
#include "gsttcpserversink.h"
#include "gsttcp-marshal.h"
#define TCP_DEFAULT_HOST "127.0.0.1"
#define TCP_DEFAULT_PORT 4953
#define TCP_BACKLOG 5
/* elementfactory information */
static GstElementDetails gst_tcpserversink_details =
GST_ELEMENT_DETAILS ("TCP Server sink",
"Sink/Network",
"Send data as a server over the network via TCP",
"Thomas Vander Stichele <thomas at apestaart dot org>");
GST_DEBUG_CATEGORY (tcpserversink_debug);
#define GST_CAT_DEFAULT (tcpserversink_debug)
enum
{
ARG_0,
ARG_HOST,
ARG_PORT,
};
static void gst_tcpserversink_base_init (gpointer g_class);
static void gst_tcpserversink_class_init (GstTCPServerSink * klass);
static void gst_tcpserversink_init (GstTCPServerSink * tcpserversink);
static gboolean gst_tcpserversink_handle_select (GstMultiFdSink * sink,
fd_set * readfds, fd_set * writefds);
static gboolean gst_tcpserversink_init_send (GstMultiFdSink * this);
static gboolean gst_tcpserversink_close (GstMultiFdSink * this);
static void gst_tcpserversink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_tcpserversink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstMultiFdSinkClass *parent_class = NULL;
GType
gst_tcpserversink_get_type (void)
{
static GType tcpserversink_type = 0;
if (!tcpserversink_type) {
static const GTypeInfo tcpserversink_info = {
sizeof (GstTCPServerSinkClass),
gst_tcpserversink_base_init,
NULL,
(GClassInitFunc) gst_tcpserversink_class_init,
NULL,
NULL,
sizeof (GstTCPServerSink),
0,
(GInstanceInitFunc) gst_tcpserversink_init,
NULL
};
tcpserversink_type =
g_type_register_static (GST_TYPE_MULTIFDSINK, "GstTCPServerSink",
&tcpserversink_info, 0);
}
return tcpserversink_type;
}
static void
gst_tcpserversink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &gst_tcpserversink_details);
}
static void
gst_tcpserversink_class_init (GstTCPServerSink * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstMultiFdSinkClass *gstmultifdsink_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstmultifdsink_class = (GstMultiFdSinkClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_MULTIFDSINK);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HOST,
g_param_spec_string ("host", "host", "The host/IP to send the packets to",
TCP_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, TCP_DEFAULT_PORT, G_PARAM_READWRITE));
gobject_class->set_property = gst_tcpserversink_set_property;
gobject_class->get_property = gst_tcpserversink_get_property;
gstmultifdsink_class->init = gst_tcpserversink_init_send;
gstmultifdsink_class->select = gst_tcpserversink_handle_select;
gstmultifdsink_class->close = gst_tcpserversink_close;
GST_DEBUG_CATEGORY_INIT (tcpserversink_debug, "tcpserversink", 0, "TCP sink");
}
static void
gst_tcpserversink_init (GstTCPServerSink * this)
{
this->server_port = TCP_DEFAULT_PORT;
/* should support as minimum 576 for IPV4 and 1500 for IPV6 */
/* this->mtu = 1500; */
this->server_sock_fd = -1;
}
/* handle a read request on the server,
* which indicates a new client connection */
static gboolean
gst_tcpserversink_handle_server_read (GstTCPServerSink * sink)
{
/* new client */
int client_sock_fd;
struct sockaddr_in client_address;
int client_address_len;
client_sock_fd =
accept (sink->server_sock_fd, (struct sockaddr *) &client_address,
&client_address_len);
if (client_sock_fd == -1) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
("Could not accept client on server socket: %s", g_strerror (errno)));
return FALSE;
}
gst_multifdsink_add (GST_MULTIFDSINK (sink), client_sock_fd);
GST_DEBUG_OBJECT (sink, "added new client ip %s with fd %d",
inet_ntoa (client_address.sin_addr), client_sock_fd);
return TRUE;
}
static gboolean
gst_tcpserversink_handle_select (GstMultiFdSink * sink,
fd_set * readfds, fd_set * writefds)
{
GstTCPServerSink *this = GST_TCPSERVERSINK (sink);
if (FD_ISSET (this->server_sock_fd, readfds)) {
/* handle new client connection on server socket */
if (!gst_tcpserversink_handle_server_read (this)) {
GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL),
("client connection failed: %s", g_strerror (errno)));
return FALSE;
}
}
return TRUE;
}
static void
gst_tcpserversink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstTCPServerSink *sink;
g_return_if_fail (GST_IS_TCPSERVERSINK (object));
sink = GST_TCPSERVERSINK (object);
switch (prop_id) {
case ARG_HOST:
g_free (sink->host);
sink->host = g_strdup (g_value_get_string (value));
break;
case ARG_PORT:
sink->server_port = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_tcpserversink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstTCPServerSink *sink;
g_return_if_fail (GST_IS_TCPSERVERSINK (object));
sink = GST_TCPSERVERSINK (object);
switch (prop_id) {
case ARG_HOST:
g_value_set_string (value, sink->host);
break;
case ARG_PORT:
g_value_set_int (value, sink->server_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_tcpserversink_init_send (GstMultiFdSink * parent)
{
int ret;
GstTCPServerSink *this = GST_TCPSERVERSINK (parent);
/* create sending server socket */
if ((this->server_sock_fd = socket (AF_INET, SOCK_STREAM, 0)) == -1) {
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_WRITE, (NULL), GST_ERROR_SYSTEM);
return FALSE;
}
GST_DEBUG_OBJECT (this, "opened sending server socket with fd %d",
this->server_sock_fd);
/* make address reusable */
if (setsockopt (this->server_sock_fd, SOL_SOCKET, SO_REUSEADDR, &ret,
sizeof (int)) < 0) {
GST_ELEMENT_ERROR (this, RESOURCE, SETTINGS, (NULL),
("Could not setsockopt: %s", g_strerror (errno)));
return FALSE;
}
/* keep connection alive; avoids SIGPIPE during write */
if (setsockopt (this->server_sock_fd, SOL_SOCKET, SO_KEEPALIVE, &ret,
sizeof (int)) < 0) {
GST_ELEMENT_ERROR (this, RESOURCE, SETTINGS, (NULL),
("Could not setsockopt: %s", g_strerror (errno)));
return FALSE;
}
/* name the socket */
memset (&this->server_sin, 0, sizeof (this->server_sin));
this->server_sin.sin_family = AF_INET; /* network socket */
this->server_sin.sin_port = htons (this->server_port); /* on port */
this->server_sin.sin_addr.s_addr = htonl (INADDR_ANY); /* for hosts */
/* bind it */
GST_DEBUG_OBJECT (this, "binding server socket to address");
ret = bind (this->server_sock_fd, (struct sockaddr *) &this->server_sin,
sizeof (this->server_sin));
if (ret) {
switch (errno) {
default:
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
("bind failed: %s", g_strerror (errno)));
return FALSE;
break;
}
}
/* set the server socket to nonblocking */
fcntl (this->server_sock_fd, F_SETFL, O_NONBLOCK);
GST_DEBUG_OBJECT (this, "listening on server socket %d with queue of %d",
this->server_sock_fd, TCP_BACKLOG);
if (listen (this->server_sock_fd, TCP_BACKLOG) == -1) {
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
("Could not listen on server socket: %s", g_strerror (errno)));
return FALSE;
}
GST_DEBUG_OBJECT (this,
"listened on server socket %d, returning from connection setup",
this->server_sock_fd);
FD_SET (this->server_sock_fd, &parent->readfds);
return TRUE;
}
static gboolean
gst_tcpserversink_close (GstMultiFdSink * parent)
{
GstTCPServerSink *this = GST_TCPSERVERSINK (parent);
if (this->server_sock_fd != -1) {
close (this->server_sock_fd);
this->server_sock_fd = -1;
}
return TRUE;
}