gstreamer/gst/tcp/gsttcpsrc.c
Zeeshan Ali 1312e75f80 adding none caps nego option
Original commit message from CVS:
adding none caps nego option
2003-07-18 00:22:37 +00:00

432 lines
11 KiB
C

/* 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 "gsttcpsrc.h"
#define TCP_DEFAULT_PORT 4953
/* elementfactory information */
GstElementDetails gst_tcpsrc_details = {
"TCP packet receiver",
"Source/Network",
"LGPL",
"Receive data over the network via TCP",
VERSION,
"Zeeshan Ali <zak147@yahoo.com>",
"(C) 2003",
};
/* TCPSrc signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_PORT,
ARG_CONTROL
/* FILL ME */
};
#define GST_TYPE_TCPSRC_CONTROL (gst_tcpsrc_control_get_type())
static GType
gst_tcpsrc_control_get_type(void) {
static GType tcpsrc_control_type = 0;
static GEnumValue tcpsrc_control[] = {
{CONTROL_NONE, "1", "none"},
{CONTROL_TCP, "2", "tcp"},
{CONTROL_ZERO, NULL, NULL}
};
if (!tcpsrc_control_type) {
tcpsrc_control_type = g_enum_register_static("GstTCPSrcControl", tcpsrc_control);
}
return tcpsrc_control_type;
}
static void gst_tcpsrc_class_init (GstTCPSrc *klass);
static void gst_tcpsrc_init (GstTCPSrc *tcpsrc);
static GstBuffer* gst_tcpsrc_get (GstPad *pad);
static GstElementStateReturn
gst_tcpsrc_change_state (GstElement *element);
static void gst_tcpsrc_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_tcpsrc_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static void gst_tcpsrc_set_clock (GstElement *element, GstClock *clock);
static GstElementClass *parent_class = NULL;
/*static guint gst_tcpsrc_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_tcpsrc_get_type (void)
{
static GType tcpsrc_type = 0;
if (!tcpsrc_type) {
static const GTypeInfo tcpsrc_info = {
sizeof(GstTCPSrcClass),
NULL,
NULL,
(GClassInitFunc)gst_tcpsrc_class_init,
NULL,
NULL,
sizeof(GstTCPSrc),
0,
(GInstanceInitFunc)gst_tcpsrc_init,
NULL
};
tcpsrc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstTCPSrc", &tcpsrc_info, 0);
}
return tcpsrc_type;
}
static void
gst_tcpsrc_class_init (GstTCPSrc *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_PORT,
g_param_spec_int ("port", "port", "The port to receive the packets from",
0, 32768, TCP_DEFAULT_PORT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_CONTROL,
g_param_spec_enum ("control", "control", "The type of control",
GST_TYPE_TCPSRC_CONTROL, CONTROL_TCP, G_PARAM_READWRITE));
gobject_class->set_property = gst_tcpsrc_set_property;
gobject_class->get_property = gst_tcpsrc_get_property;
gstelement_class->change_state = gst_tcpsrc_change_state;
gstelement_class->set_clock = gst_tcpsrc_set_clock;
}
static void
gst_tcpsrc_set_clock (GstElement *element, GstClock *clock)
{
GstTCPSrc *tcpsrc;
tcpsrc = GST_TCPSRC (element);
tcpsrc->clock = clock;
}
static void
gst_tcpsrc_init (GstTCPSrc *tcpsrc)
{
/* create the src and src pads */
tcpsrc->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (tcpsrc), tcpsrc->srcpad);
gst_pad_set_get_function (tcpsrc->srcpad, gst_tcpsrc_get);
tcpsrc->port = TCP_DEFAULT_PORT;
tcpsrc->control = CONTROL_TCP;
tcpsrc->clock = NULL;
tcpsrc->sock = -1;
tcpsrc->control_sock = -1;
GST_FLAG_UNSET (tcpsrc, GST_TCPSRC_OPEN);
GST_FLAG_SET (tcpsrc, GST_TCPSRC_1ST_BUF);
GST_FLAG_UNSET (tcpsrc, GST_TCPSRC_CONNECTED);
}
static GstBuffer*
gst_tcpsrc_get (GstPad *pad)
{
GstTCPSrc *tcpsrc;
GstBuffer *outbuf;
socklen_t len;
gint numbytes;
fd_set read_fds;
guint max_sock;
int ret, client_sock;
struct sockaddr client_addr;
g_return_val_if_fail (pad != NULL, NULL);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
tcpsrc = GST_TCPSRC (GST_OBJECT_PARENT (pad));
FD_ZERO (&read_fds);
FD_SET (tcpsrc->sock, &read_fds);
if (tcpsrc->control_sock >= 0) {
FD_SET (tcpsrc->control_sock, &read_fds);
}
max_sock = MAX(tcpsrc->sock, tcpsrc->control_sock);
if (select (max_sock+1, &read_fds, NULL, NULL, NULL) > 0) {
if ((tcpsrc->control_sock != -1) && FD_ISSET (tcpsrc->control_sock, &read_fds))
{
guchar *buf;
xmlDocPtr doc;
GstCaps *caps;
switch (tcpsrc->control) {
case CONTROL_TCP:
#ifndef GST_DISABLE_LOADSAVE
buf = g_malloc (1024*10);
len = sizeof (struct sockaddr);
client_sock = accept (tcpsrc->control_sock, &client_addr, &len);
if (client_sock <= 0) {
perror ("control_sock accept");
}
else if ((ret = read (client_sock, buf, 1024*10)) <= 0) {
perror ("control_sock read");
}
else {
buf[ret] = '\0';
doc = xmlParseMemory(buf, ret);
caps = gst_caps_load_thyself(doc->xmlRootNode);
/* foward the connect, we don't signal back the result here... */
gst_pad_proxy_link (tcpsrc->srcpad, caps);
}
g_free (buf);
#endif
break;
case CONTROL_NONE:
default:
g_free (buf);
return NULL;
break;
}
outbuf = NULL;
}
else {
outbuf = gst_buffer_new ();
GST_BUFFER_DATA (outbuf) = g_malloc (24000);
GST_BUFFER_SIZE (outbuf) = 24000;
if (GST_FLAG_IS_SET (tcpsrc, GST_TCPSRC_1ST_BUF)) {
if (tcpsrc->clock) {
GstClockTime current_time;
GstEvent *discont;
current_time = gst_clock_get_time (tcpsrc->clock);
GST_BUFFER_TIMESTAMP (outbuf) = current_time;
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
current_time, NULL);
gst_pad_push (tcpsrc->srcpad, GST_BUFFER (discont));
}
GST_FLAG_UNSET (tcpsrc, GST_TCPSRC_1ST_BUF);
}
else {
GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
}
if (!GST_FLAG_IS_SET (tcpsrc, GST_TCPSRC_CONNECTED)) {
tcpsrc->client_sock = accept (tcpsrc->sock, &client_addr, &len);
if (tcpsrc->client_sock <= 0) {
perror ("accept");
}
else {
GST_FLAG_SET (tcpsrc, GST_TCPSRC_CONNECTED);
}
}
numbytes =
read (tcpsrc->client_sock, GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
if (numbytes > 0) {
GST_BUFFER_SIZE (outbuf) = numbytes;
}
else {
perror ("read");
gst_buffer_unref (outbuf);
outbuf = NULL;
close (tcpsrc->client_sock);
GST_FLAG_UNSET (tcpsrc, GST_TCPSRC_CONNECTED);
}
}
}
else {
perror ("select");
outbuf = NULL;
}
return outbuf;
}
static void
gst_tcpsrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstTCPSrc *tcpsrc;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_TCPSRC(object));
tcpsrc = GST_TCPSRC(object);
switch (prop_id) {
case ARG_PORT:
tcpsrc->port = g_value_get_int (value);
break;
case ARG_CONTROL:
tcpsrc->control = g_value_get_enum (value);
break;
default:
break;
}
}
static void
gst_tcpsrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstTCPSrc *tcpsrc;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_TCPSRC(object));
tcpsrc = GST_TCPSRC(object);
switch (prop_id) {
case ARG_PORT:
g_value_set_int (value, tcpsrc->port);
break;
case ARG_CONTROL:
g_value_set_enum (value, tcpsrc->control);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* create a socket for sending to remote machine */
static gboolean
gst_tcpsrc_init_receive (GstTCPSrc *src)
{
bzero (&src->myaddr, sizeof (src->myaddr));
src->myaddr.sin_family = AF_INET; /* host byte order */
src->myaddr.sin_port = htons (src->port); /* short, network byte order */
src->myaddr.sin_addr.s_addr = INADDR_ANY;
if ((src->sock = socket (AF_INET, SOCK_STREAM, 0)) == -1) {
perror("stream_socket");
return FALSE;
}
if (bind (src->sock, (struct sockaddr *) &src->myaddr, sizeof (src->myaddr)) == -1) {
perror("stream_sock bind");
return FALSE;
}
if (listen (src->sock, 5) == -1) {
perror("stream_sock listen");
return FALSE;
}
fcntl (src->sock, F_SETFL, O_NONBLOCK);
switch (src->control) {
case CONTROL_TCP:
if ((src->control_sock = socket (AF_INET, SOCK_STREAM, 0)) == -1) {
perror("control_socket");
return FALSE;
}
src->myaddr.sin_port = htons (src->port+1);
if (bind (src->control_sock, (struct sockaddr *) &src->myaddr, sizeof (src->myaddr)) == -1)
{
perror("control bind");
return FALSE;
}
if (listen (src->control_sock, 5) == -1) {
perror("control listen");
return FALSE;
}
fcntl (src->control_sock, F_SETFL, O_NONBLOCK);
case CONTROL_NONE:
GST_FLAG_SET (src, GST_TCPSRC_OPEN);
return TRUE;
break;
default:
return FALSE;
break;
}
GST_FLAG_SET (src, GST_TCPSRC_OPEN);
return TRUE;
}
static void
gst_tcpsrc_close (GstTCPSrc *src)
{
if (src->sock != -1) {
close (src->sock);
src->sock = -1;
}
if (src->control_sock != -1) {
close (src->control_sock);
src->control_sock = -1;
}
GST_FLAG_UNSET (src, GST_TCPSRC_OPEN);
}
static GstElementStateReturn
gst_tcpsrc_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_TCPSRC (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_TCPSRC_OPEN))
gst_tcpsrc_close (GST_TCPSRC (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_TCPSRC_OPEN)) {
if (!gst_tcpsrc_init_receive (GST_TCPSRC (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;
}