gstreamer/gst/dccp/gstdccpclientsrc.c

405 lines
12 KiB
C

/* GStreamer
* Copyright (C) <2007> Leandro Melo de Sales <leandroal@gmail.com>
*
* 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-dccpclientsrc
* @see_also: dccpclientsink, dccpserversink, dccpserversrc
*
* This element connect to a DCCP server and send data to it.
* <ulink url="http://www.linuxfoundation.org/en/Net:DCCP">DCCP</ulink> (Datagram
* Congestion Control Protocol) is a Transport Layer protocol like
* TCP and UDP.
*
* <refsect2>
* <title>Example pipeline</title>
* <para>
* |[
* gst-launch -v dccpclientsrc host=localhost port=9011 ccid=2 ! decodebin ! alsasink
* ]| Client
* |[
* gst-launch -v filesrc location=music.mp3 ! mp3parse ! dccpserversink port=9011 ccid=2
* ]| Server
*
* This example pipeline will send a MP3 stream to the client using DCCP.
* The client will decode the MP3 and play it. Run the server pipeline
* first than the client pipeline. If you want, you can run more than one dccpclientsrc
* to connect to the same server (see wait-connections property at dccpserversink).
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdccpclientsrc.h"
#include "gstdccp.h"
#include <fcntl.h>
#ifdef HAVE_FIONREAD_IN_SYS_FILIO
#include <sys/filio.h>
#endif
#define DCCP_DEFAULT_CAPS NULL
/* signals */
enum
{
SIGNAL_CONNECTED,
LAST_SIGNAL
};
/* properties */
enum
{
PROP_0,
PROP_PORT,
PROP_HOST,
PROP_SOCK_FD,
PROP_CLOSED,
PROP_CCID,
PROP_CAPS
};
static gboolean gst_dccp_client_src_stop (GstBaseSrc * bsrc);
GST_DEBUG_CATEGORY_STATIC (dccpclientsrc_debug);
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_BOILERPLATE (GstDCCPClientSrc, gst_dccp_client_src, GstPushSrc,
GST_TYPE_PUSH_SRC);
static guint gst_dccp_client_src_signals[LAST_SIGNAL] = { 0 };
/*
* Read a buffer from the client socket
*
* @return GST_FLOW_OK if the send operation was successful, GST_FLOW_ERROR otherwise.
*/
static GstFlowReturn
gst_dccp_client_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
{
GstDCCPClientSrc *src;
GstFlowReturn ret = GST_FLOW_OK;
src = GST_DCCP_CLIENT_SRC (psrc);
GST_LOG_OBJECT (src, "reading a buffer");
ret = gst_dccp_read_buffer (GST_ELEMENT (src), src->sock_fd, outbuf);
if (ret == GST_FLOW_OK) {
GST_LOG_OBJECT (src,
"Returning buffer from _get of size %d, ts %"
GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT
", offset %" G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT,
GST_BUFFER_SIZE (*outbuf),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*outbuf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (*outbuf)),
GST_BUFFER_OFFSET (*outbuf), GST_BUFFER_OFFSET_END (*outbuf));
if (!gst_caps_is_equal (src->caps, GST_CAPS_ANY)) {
gst_buffer_set_caps (*outbuf, src->caps);
}
}
return ret;
}
/*
* Set the value of a property for the client src.
*/
static void
gst_dccp_client_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (object);
switch (prop_id) {
case PROP_PORT:
src->port = g_value_get_int (value);
break;
case PROP_HOST:
if (!g_value_get_string (value)) {
g_warning ("host property cannot be NULL");
break;
}
g_free (src->host);
src->host = g_strdup (g_value_get_string (value));
break;
case PROP_SOCK_FD:
src->sock_fd = g_value_get_int (value);
break;
case PROP_CLOSED:
src->closed = g_value_get_boolean (value);
break;
case PROP_CCID:
src->ccid = g_value_get_int (value);
break;
case PROP_CAPS:
{
const GstCaps *new_caps_val = gst_value_get_caps (value);
GstCaps *new_caps;
GstCaps *old_caps;
if (new_caps_val == NULL) {
new_caps = gst_caps_new_any ();
} else {
new_caps = gst_caps_copy (new_caps_val);
}
old_caps = src->caps;
src->caps = new_caps;
if (old_caps)
gst_caps_unref (old_caps);
gst_pad_set_caps (GST_BASE_SRC (src)->srcpad, new_caps);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/*
* Get a given property value for the client src.
*/
static void
gst_dccp_client_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (object);
switch (prop_id) {
case PROP_PORT:
g_value_set_int (value, src->port);
break;
case PROP_HOST:
g_value_set_string (value, src->host);
break;
case PROP_SOCK_FD:
g_value_set_int (value, src->sock_fd);
break;
case PROP_CLOSED:
g_value_set_boolean (value, src->closed);
break;
case PROP_CCID:
g_value_set_int (value, src->ccid);
break;
case PROP_CAPS:
gst_value_set_caps (value, src->caps);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/*
* Starts the element. If the sockfd property was not the default, this method
* will create a new socket and connect to the server.
*
* @param bsrc - the element
* @return TRUE if the send operation was successful, FALSE otherwise.
*/
static gboolean
gst_dccp_client_src_start (GstBaseSrc * bsrc)
{
GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (bsrc);
if (src->sock_fd == DCCP_DEFAULT_SOCK_FD) {
gchar *ip = NULL;
/* look up name if we need to */
if (!(ip = gst_dccp_host_to_ip (GST_ELEMENT (src), src->host))) {
GST_ERROR_OBJECT (src, "cannot resolve hostname");
gst_dccp_client_src_stop (GST_BASE_SRC (src));
return FALSE;
}
/* name the server socket */
memset (&src->server_sin, 0, sizeof (src->server_sin));
src->server_sin.sin_family = AF_INET; /* network socket */
src->server_sin.sin_port = htons (src->port); /* on port */
src->server_sin.sin_addr.s_addr = inet_addr (ip); /* on host ip */
g_free (ip);
/* create socket */
if ((src->sock_fd = gst_dccp_create_new_socket (GST_ELEMENT (src))) < 0) {
return FALSE;
}
if (!gst_dccp_set_ccid (GST_ELEMENT (src), src->sock_fd, src->ccid)) {
gst_dccp_client_src_stop (GST_BASE_SRC (src));
return FALSE;
}
if (!gst_dccp_connect_to_server (GST_ELEMENT (src), src->server_sin,
src->sock_fd)) {
gst_dccp_client_src_stop (GST_BASE_SRC (src));
return FALSE;
}
/* the socket is connected */
g_signal_emit (src, gst_dccp_client_src_signals[SIGNAL_CONNECTED], 0,
src->sock_fd);
}
return TRUE;
}
static void
gst_dccp_client_src_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 (&srctemplate));
gst_element_class_set_details_simple (element_class, "DCCP client source",
"Source/Network",
"Receive data as a client over the network via DCCP",
"E-Phone Team at Federal University of Campina Grande <leandroal@gmail.com>");
}
static void
gst_dccp_client_src_init (GstDCCPClientSrc * this,
GstDCCPClientSrcClass * g_class)
{
this->port = DCCP_DEFAULT_PORT;
this->host = g_strdup (DCCP_DEFAULT_HOST);
this->sock_fd = DCCP_DEFAULT_SOCK_FD;
this->closed = DCCP_DEFAULT_CLOSED;
this->ccid = DCCP_DEFAULT_CCID;
this->caps = NULL;
gst_base_src_set_format (GST_BASE_SRC (this), GST_FORMAT_TIME);
/* Checking if the version of the gstreamer is bigger that 0.10.15 */
#if ((GST_VERSION_MAJOR > 0) || \
(GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR > 10) || \
(GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR == 10 && GST_VERSION_MICRO >= 15))
gst_base_src_set_do_timestamp (GST_BASE_SRC (this), TRUE);
#endif
/* FIXME is this correct? */
gst_base_src_set_live (GST_BASE_SRC (this), TRUE);
}
static void
gst_dccp_client_src_finalize (GObject * gobject)
{
GstDCCPClientSrc *this = GST_DCCP_CLIENT_SRC (gobject);
if (this->caps) {
gst_caps_unref (this->caps);
this->caps = NULL;
}
g_free (this->host);
G_OBJECT_CLASS (parent_class)->finalize (gobject);
}
static gboolean
gst_dccp_client_src_stop (GstBaseSrc * bsrc)
{
GstDCCPClientSrc *src;
src = GST_DCCP_CLIENT_SRC (bsrc);
if (src->sock_fd != DCCP_DEFAULT_SOCK_FD && src->closed) {
gst_dccp_socket_close (GST_ELEMENT (src), &(src->sock_fd));
}
return TRUE;
}
/*
* Define the gst class, callbacks, etc.
*/
static void
gst_dccp_client_src_class_init (GstDCCPClientSrcClass * klass)
{
GObjectClass *gobject_class;
GstBaseSrcClass *gstbasesrc_class;
GstPushSrcClass *gstpush_src_class;
gobject_class = (GObjectClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpush_src_class = (GstPushSrcClass *) klass;
gobject_class->set_property = gst_dccp_client_src_set_property;
gobject_class->get_property = gst_dccp_client_src_get_property;
gobject_class->finalize = gst_dccp_client_src_finalize;
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT,
g_param_spec_int ("port", "Port",
"The port to receive packets from", 0, G_MAXUINT16,
DCCP_DEFAULT_PORT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_HOST,
g_param_spec_string ("host", "Host",
"The host IP address to receive packets from", DCCP_DEFAULT_HOST,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_SOCK_FD,
g_param_spec_int ("sockfd", "Socket fd",
"The socket file descriptor", -1, G_MAXINT, DCCP_DEFAULT_SOCK_FD,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_CLOSED,
g_param_spec_boolean ("close-socket", "Close socket",
"Close socket at the end of stream", DCCP_DEFAULT_CLOSED,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_CAPS,
g_param_spec_boxed ("caps", "Caps",
"The caps of the source pad", GST_TYPE_CAPS, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_CCID,
g_param_spec_int ("ccid", "CCID",
"The Congestion Control IDentified to be used", 2, G_MAXINT,
DCCP_DEFAULT_CCID, G_PARAM_READWRITE));
/* signals */
/**
* GstDccpClientSrc::connected:
* @src: the gstdccpclientsrc element that emitted this signal
* @fd: the connected socket file descriptor
*
* Reports that the element has connected, giving the fd of the socket
*/
gst_dccp_client_src_signals[SIGNAL_CONNECTED] =
g_signal_new ("connected", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstDCCPClientSrcClass, connected), NULL, NULL,
gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
gstbasesrc_class->start = gst_dccp_client_src_start;
gstbasesrc_class->stop = gst_dccp_client_src_stop;
gstpush_src_class->create = gst_dccp_client_src_create;
GST_DEBUG_CATEGORY_INIT (dccpclientsrc_debug, "dccpclientsrc", 0,
"DCCP Client Source");
}