gstreamer/gst/tcp/gsttcpclientsink.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 <gst/dataprotocol/dataprotocol.h>
#include "gsttcp.h"
#include "gsttcpclientsink.h"
/* elementfactory information */
static GstElementDetails gst_tcpclientsink_details =
GST_ELEMENT_DETAILS ("TCP Client sink",
"Sink/Network",
"Send data as a client over the network via TCP",
"Thomas Vander Stichele <thomas at apestaart dot org>");
/* TCPClientSink signals and args */
enum
{
FRAME_ENCODED,
/* FILL ME */
LAST_SIGNAL
};
GST_DEBUG_CATEGORY (tcpclientsink_debug);
#define GST_CAT_DEFAULT (tcpclientsink_debug)
enum
{
ARG_0,
ARG_HOST,
ARG_PORT,
ARG_PROTOCOL
/* FILL ME */
};
static void gst_tcpclientsink_base_init (gpointer g_class);
static void gst_tcpclientsink_class_init (GstTCPClientSink * klass);
static void gst_tcpclientsink_init (GstTCPClientSink * tcpclientsink);
static void gst_tcpclientsink_set_clock (GstElement * element,
GstClock * clock);
static void gst_tcpclientsink_chain (GstPad * pad, GstData * _data);
static GstElementStateReturn gst_tcpclientsink_change_state (GstElement *
element);
static void gst_tcpclientsink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_tcpclientsink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementClass *parent_class = NULL;
/*static guint gst_tcpclientsink_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_tcpclientsink_get_type (void)
{
static GType tcpclientsink_type = 0;
if (!tcpclientsink_type) {
static const GTypeInfo tcpclientsink_info = {
sizeof (GstTCPClientSinkClass),
gst_tcpclientsink_base_init,
NULL,
(GClassInitFunc) gst_tcpclientsink_class_init,
NULL,
NULL,
sizeof (GstTCPClientSink),
0,
(GInstanceInitFunc) gst_tcpclientsink_init,
NULL
};
tcpclientsink_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstTCPClientSink",
&tcpclientsink_info, 0);
}
return tcpclientsink_type;
}
static void
gst_tcpclientsink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &gst_tcpclientsink_details);
}
static void
gst_tcpclientsink_class_init (GstTCPClientSink * 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", "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, TCP_HIGHEST_PORT, TCP_DEFAULT_PORT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_PROTOCOL,
g_param_spec_enum ("protocol", "Protocol", "The protocol to wrap data in",
GST_TYPE_TCP_PROTOCOL_TYPE, GST_TCP_PROTOCOL_TYPE_NONE,
G_PARAM_READWRITE));
gobject_class->set_property = gst_tcpclientsink_set_property;
gobject_class->get_property = gst_tcpclientsink_get_property;
gstelement_class->change_state = gst_tcpclientsink_change_state;
gstelement_class->set_clock = gst_tcpclientsink_set_clock;
GST_DEBUG_CATEGORY_INIT (tcpclientsink_debug, "tcpclientsink", 0, "TCP sink");
}
static void
gst_tcpclientsink_set_clock (GstElement * element, GstClock * clock)
{
GstTCPClientSink *tcpclientsink;
tcpclientsink = GST_TCPCLIENTSINK (element);
tcpclientsink->clock = clock;
}
static void
gst_tcpclientsink_init (GstTCPClientSink * this)
{
/* create the sink pad */
this->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (this), this->sinkpad);
gst_pad_set_chain_function (this->sinkpad, gst_tcpclientsink_chain);
this->host = g_strdup (TCP_DEFAULT_HOST);
this->port = TCP_DEFAULT_PORT;
/* should support as minimum 576 for IPV4 and 1500 for IPV6 */
/* this->mtu = 1500; */
this->sock_fd = -1;
this->protocol = GST_TCP_PROTOCOL_TYPE_NONE;
GST_FLAG_UNSET (this, GST_TCPCLIENTSINK_OPEN);
this->clock = NULL;
}
static void
gst_tcpclientsink_chain (GstPad * pad, GstData * _data)
{
size_t wrote = 0;
GstBuffer *buf = GST_BUFFER (_data);
GstTCPClientSink *sink;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
sink = GST_TCPCLIENTSINK (GST_OBJECT_PARENT (pad));
g_return_if_fail (GST_FLAG_IS_SET (sink, GST_TCPCLIENTSINK_OPEN));
if (GST_IS_EVENT (buf)) {
g_warning ("FIXME: handl events");
return;
}
/* write the buffer header if we have one */
switch (sink->protocol) {
case GST_TCP_PROTOCOL_TYPE_NONE:
break;
case GST_TCP_PROTOCOL_TYPE_GDP:
/* if we haven't send caps yet, send them first */
if (!sink->caps_sent) {
const GstCaps *caps;
gchar *string;
caps = GST_PAD_CAPS (GST_PAD_PEER (pad));
string = gst_caps_to_string (caps);
GST_DEBUG_OBJECT (sink, "Sending caps %s through GDP", string);
if (!gst_tcp_gdp_write_caps (GST_ELEMENT (sink), sink->sock_fd, caps,
TRUE, sink->host, sink->port)) {
g_free (string);
return;
}
g_free (string);
sink->caps_sent = TRUE;
}
GST_LOG_OBJECT (sink, "Sending buffer header through GDP");
if (!gst_tcp_gdp_write_header (GST_ELEMENT (sink), sink->sock_fd, buf,
TRUE, sink->host, sink->port))
return;
break;
default:
g_warning ("Unhandled protocol type");
break;
}
GST_LOG_OBJECT (sink, "writing %d bytes for buffer data",
GST_BUFFER_SIZE (buf));
wrote =
gst_tcp_socket_write (sink->sock_fd, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
if (wrote < GST_BUFFER_SIZE (buf)) {
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
(_("Error while sending data to \"%s:%d\"."), sink->host, sink->port),
("Only %d of %d bytes written: %s",
wrote, GST_BUFFER_SIZE (buf), g_strerror (errno)));
}
sink->data_written += wrote;
gst_buffer_unref (buf);
/* FIXME: emit signal ? */
}
static void
gst_tcpclientsink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstTCPClientSink *tcpclientsink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_TCPCLIENTSINK (object));
tcpclientsink = GST_TCPCLIENTSINK (object);
switch (prop_id) {
case ARG_HOST:
g_free (tcpclientsink->host);
tcpclientsink->host = g_strdup (g_value_get_string (value));
break;
case ARG_PORT:
tcpclientsink->port = g_value_get_int (value);
break;
case ARG_PROTOCOL:
tcpclientsink->protocol = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_tcpclientsink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstTCPClientSink *tcpclientsink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_TCPCLIENTSINK (object));
tcpclientsink = GST_TCPCLIENTSINK (object);
switch (prop_id) {
case ARG_HOST:
g_value_set_string (value, tcpclientsink->host);
break;
case ARG_PORT:
g_value_set_int (value, tcpclientsink->port);
break;
case ARG_PROTOCOL:
g_value_set_enum (value, tcpclientsink->protocol);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* create a socket for sending to remote machine */
static gboolean
gst_tcpclientsink_init_send (GstTCPClientSink * this)
{
int ret;
gchar *ip;
/* reset caps_sent flag */
this->caps_sent = FALSE;
/* create sending client socket */
GST_DEBUG_OBJECT (this, "opening sending client socket to %s:%d", this->host,
this->port);
if ((this->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 client socket with fd %d",
this->sock_fd);
/* look up name if we need to */
ip = gst_tcp_host_to_ip (GST_ELEMENT (this), this->host);
if (!ip)
return FALSE;
GST_DEBUG_OBJECT (this, "IP address for host %s is %s", this->host, ip);
/* connect to server */
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->port); /* on port */
this->server_sin.sin_addr.s_addr = inet_addr (ip); /* on host ip */
g_free (ip);
GST_DEBUG_OBJECT (this, "connecting to server");
ret = connect (this->sock_fd, (struct sockaddr *) &this->server_sin,
sizeof (this->server_sin));
if (ret) {
switch (errno) {
case ECONNREFUSED:
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_WRITE,
(_("Connection to %s:%d refused."), this->host, this->port),
(NULL));
return FALSE;
break;
default:
GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
("connect to %s:%d failed: %s", this->host, this->port,
g_strerror (errno)));
return FALSE;
break;
}
}
GST_FLAG_SET (this, GST_TCPCLIENTSINK_OPEN);
this->data_written = 0;
return TRUE;
}
static void
gst_tcpclientsink_close (GstTCPClientSink * this)
{
if (this->sock_fd != -1) {
close (this->sock_fd);
this->sock_fd = -1;
}
GST_FLAG_UNSET (this, GST_TCPCLIENTSINK_OPEN);
}
static GstElementStateReturn
gst_tcpclientsink_change_state (GstElement * element)
{
g_return_val_if_fail (GST_IS_TCPCLIENTSINK (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_TCPCLIENTSINK_OPEN))
gst_tcpclientsink_close (GST_TCPCLIENTSINK (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_TCPCLIENTSINK_OPEN)) {
if (!gst_tcpclientsink_init_send (GST_TCPCLIENTSINK (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;
}