gstreamer/gst/tcp/gsttcpclientsink.c
Stefan Kost 3d20bad4ba docs: add examples for tcp elements, also use correct section name. Fixes
Updated the examples in the README to actually work. Add them to api docs. Tests
the api-docs and fix the section names to make the docs actualy show up.
The example for "tcpserversrc" needs review (might be an element bug).
2009-03-23 17:03:38 +02:00

464 lines
13 KiB
C

/* 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.
*/
/**
* SECTION:element-tcpclientsink
* @see_also: #tcpclientsrc
*
* <refsect2>
* <title>Example launch line</title>
* |[
* # server:
* nc -l -p 3000
* # client:
* gst-launch fdsrc fd=1 ! tcpclientsink protocol=none port=3000
* ]| everything you type in the client is shown on the server
* </refsect2>
*/
#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"
#include <string.h> /* memset */
/* elementfactory information */
static const GstElementDetails gst_tcp_client_sink_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_STATIC (tcpclientsink_debug);
#define GST_CAT_DEFAULT (tcpclientsink_debug)
enum
{
ARG_0,
ARG_HOST,
ARG_PORT,
ARG_PROTOCOL
/* FILL ME */
};
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static void gst_tcp_client_sink_base_init (gpointer g_class);
static void gst_tcp_client_sink_class_init (GstTCPClientSink * klass);
static void gst_tcp_client_sink_init (GstTCPClientSink * tcpclientsink);
static void gst_tcp_client_sink_finalize (GObject * gobject);
static gboolean gst_tcp_client_sink_setcaps (GstBaseSink * bsink,
GstCaps * caps);
static GstFlowReturn gst_tcp_client_sink_render (GstBaseSink * bsink,
GstBuffer * buf);
static GstStateChangeReturn gst_tcp_client_sink_change_state (GstElement *
element, GstStateChange transition);
static void gst_tcp_client_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_tcp_client_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementClass *parent_class = NULL;
/*static guint gst_tcp_client_sink_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_tcp_client_sink_get_type (void)
{
static GType tcpclientsink_type = 0;
if (!tcpclientsink_type) {
static const GTypeInfo tcpclientsink_info = {
sizeof (GstTCPClientSinkClass),
gst_tcp_client_sink_base_init,
NULL,
(GClassInitFunc) gst_tcp_client_sink_class_init,
NULL,
NULL,
sizeof (GstTCPClientSink),
0,
(GInstanceInitFunc) gst_tcp_client_sink_init,
NULL
};
tcpclientsink_type =
g_type_register_static (GST_TYPE_BASE_SINK, "GstTCPClientSink",
&tcpclientsink_info, 0);
}
return tcpclientsink_type;
}
static void
gst_tcp_client_sink_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 (&sinktemplate));
gst_element_class_set_details (element_class, &gst_tcp_client_sink_details);
}
static void
gst_tcp_client_sink_class_init (GstTCPClientSink * klass)
{
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_peek_parent (klass);
gobject_class->set_property = gst_tcp_client_sink_set_property;
gobject_class->get_property = gst_tcp_client_sink_get_property;
gobject_class->finalize = gst_tcp_client_sink_finalize;
g_object_class_install_property (gobject_class, ARG_HOST,
g_param_spec_string ("host", "Host", "The host/IP to send the packets to",
TCP_DEFAULT_HOST, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, 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_PARAM_STATIC_STRINGS));
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, GST_TCP_PROTOCOL_NONE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state = gst_tcp_client_sink_change_state;
gstbasesink_class->set_caps = gst_tcp_client_sink_setcaps;
gstbasesink_class->render = gst_tcp_client_sink_render;
GST_DEBUG_CATEGORY_INIT (tcpclientsink_debug, "tcpclientsink", 0, "TCP sink");
}
static void
gst_tcp_client_sink_init (GstTCPClientSink * this)
{
this->host = g_strdup (TCP_DEFAULT_HOST);
this->port = TCP_DEFAULT_PORT;
this->sock_fd.fd = -1;
this->protocol = GST_TCP_PROTOCOL_NONE;
GST_OBJECT_FLAG_UNSET (this, GST_TCP_CLIENT_SINK_OPEN);
}
static void
gst_tcp_client_sink_finalize (GObject * gobject)
{
GstTCPClientSink *this = GST_TCP_CLIENT_SINK (gobject);
g_free (this->host);
G_OBJECT_CLASS (parent_class)->finalize (gobject);
}
static gboolean
gst_tcp_client_sink_setcaps (GstBaseSink * bsink, GstCaps * caps)
{
GstTCPClientSink *sink;
sink = GST_TCP_CLIENT_SINK (bsink);
/* write the buffer header if we have one */
switch (sink->protocol) {
case GST_TCP_PROTOCOL_NONE:
break;
case GST_TCP_PROTOCOL_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 (GST_BASE_SINK_PAD (bsink)));
string = gst_caps_to_string (caps);
GST_DEBUG_OBJECT (sink, "Sending caps %s through GDP", string);
g_free (string);
if (!gst_tcp_gdp_write_caps (GST_ELEMENT (sink), sink->sock_fd.fd,
caps, TRUE, sink->host, sink->port))
goto gdp_write_error;
sink->caps_sent = TRUE;
}
break;
default:
g_warning ("Unhandled protocol type");
break;
}
return TRUE;
/* ERRORS */
gdp_write_error:
{
return FALSE;
}
}
static GstFlowReturn
gst_tcp_client_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
size_t wrote = 0;
GstTCPClientSink *sink;
gint size;
sink = GST_TCP_CLIENT_SINK (bsink);
g_return_val_if_fail (GST_OBJECT_FLAG_IS_SET (sink, GST_TCP_CLIENT_SINK_OPEN),
GST_FLOW_WRONG_STATE);
size = GST_BUFFER_SIZE (buf);
GST_LOG_OBJECT (sink, "writing %d bytes for buffer data", size);
/* write the buffer header if we have one */
switch (sink->protocol) {
case GST_TCP_PROTOCOL_NONE:
break;
case GST_TCP_PROTOCOL_GDP:
GST_LOG_OBJECT (sink, "Sending buffer header through GDP");
if (!gst_tcp_gdp_write_buffer (GST_ELEMENT (sink), sink->sock_fd.fd, buf,
TRUE, sink->host, sink->port))
goto gdp_write_error;
break;
default:
break;
}
/* write buffer data */
wrote = gst_tcp_socket_write (sink->sock_fd.fd, GST_BUFFER_DATA (buf), size);
if (wrote < size)
goto write_error;
sink->data_written += wrote;
return GST_FLOW_OK;
/* ERRORS */
gdp_write_error:
{
return FALSE;
}
write_error:
{
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
(_("Error while sending data to \"%s:%d\"."), sink->host, sink->port),
("Only %" G_GSIZE_FORMAT " of %u bytes written: %s",
wrote, GST_BUFFER_SIZE (buf), g_strerror (errno)));
return GST_FLOW_ERROR;
}
}
static void
gst_tcp_client_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstTCPClientSink *tcpclientsink;
g_return_if_fail (GST_IS_TCP_CLIENT_SINK (object));
tcpclientsink = GST_TCP_CLIENT_SINK (object);
switch (prop_id) {
case ARG_HOST:
if (!g_value_get_string (value)) {
g_warning ("host property cannot be NULL");
break;
}
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_tcp_client_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstTCPClientSink *tcpclientsink;
g_return_if_fail (GST_IS_TCP_CLIENT_SINK (object));
tcpclientsink = GST_TCP_CLIENT_SINK (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_tcp_client_sink_start (GstTCPClientSink * this)
{
int ret;
gchar *ip;
if (GST_OBJECT_FLAG_IS_SET (this, GST_TCP_CLIENT_SINK_OPEN))
return TRUE;
/* 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.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.fd);
/* look up name if we need to */
ip = gst_tcp_host_to_ip (GST_ELEMENT (this), this->host);
if (!ip) {
gst_tcp_socket_close (&this->sock_fd);
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.fd, (struct sockaddr *) &this->server_sin,
sizeof (this->server_sin));
if (ret) {
gst_tcp_socket_close (&this->sock_fd);
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_OBJECT_FLAG_SET (this, GST_TCP_CLIENT_SINK_OPEN);
this->data_written = 0;
return TRUE;
}
static gboolean
gst_tcp_client_sink_stop (GstTCPClientSink * this)
{
if (!GST_OBJECT_FLAG_IS_SET (this, GST_TCP_CLIENT_SINK_OPEN))
return TRUE;
gst_tcp_socket_close (&this->sock_fd);
GST_OBJECT_FLAG_UNSET (this, GST_TCP_CLIENT_SINK_OPEN);
return TRUE;
}
static GstStateChangeReturn
gst_tcp_client_sink_change_state (GstElement * element,
GstStateChange transition)
{
GstTCPClientSink *sink;
GstStateChangeReturn res;
sink = GST_TCP_CLIENT_SINK (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (!gst_tcp_client_sink_start (GST_TCP_CLIENT_SINK (element)))
goto start_failure;
break;
default:
break;
}
res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_tcp_client_sink_stop (GST_TCP_CLIENT_SINK (element));
default:
break;
}
return res;
start_failure:
{
return GST_STATE_CHANGE_FAILURE;
}
}