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gst/udp/gstudpsrc.*: Added "buffer" property to control the kernel receive buffer size.

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Original commit message from CVS:
Patch by: Thijs Vermeir <thijs dot vermeir at barco dot com>
* gst/udp/gstudpsrc.c: (gst_udpsrc_class_init), (gst_udpsrc_init),
(gst_udpsrc_create), (gst_udpsrc_set_property),
(gst_udpsrc_get_property), (gst_udpsrc_start):
* gst/udp/gstudpsrc.h:
Added "buffer" property to control the kernel receive buffer size.
Update documentation.
Small cleanups. Fixes #348752.
API: buffer property
This commit is contained in:
Thijs Vermeir 2006-07-27 09:04:51 +00:00 committed by Wim Taymans
parent ca00f98eb5
commit 5eebca0ee3
3 changed files with 88 additions and 15 deletions
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13
ChangeLog
View file

@ -1,3 +1,16 @@
2006-07-27 Wim Taymans <wim@fluendo.com>
Patch by: Thijs Vermeir <thijs dot vermeir at barco dot com>
* gst/udp/gstudpsrc.c: (gst_udpsrc_class_init), (gst_udpsrc_init),
(gst_udpsrc_create), (gst_udpsrc_set_property),
(gst_udpsrc_get_property), (gst_udpsrc_start):
* gst/udp/gstudpsrc.h:
Added "buffer" property to control the kernel receive buffer size.
Update documentation.
Small cleanups. Fixes #348752.
API: buffer property
2006-07-26 Wim Taymans <wim@fluendo.com>
Patch by: Kai Vehmanen <kv2004 at eca dot cx>

87
gst/udp/gstudpsrc.c
View file

@ -46,6 +46,8 @@
* <programlisting>
* gst-launch -v udpsrc port=0 ! fakesink
* </programlisting>
* After setting the udpsrc to PAUSED, the allocated port can be obtained by
* reading the port property.
* </para>
* <para>
* udpsrc can read from multicast groups by setting the multicast_group property
@ -62,6 +64,13 @@
* using SDP or other means.
* </para>
* <para>
* The "buffer" property is used to change the default kernel buffer sizes used for
* receiving packets. The buffer size may be increased for high-volume connections,
* or may be decreased to limit the possible backlog of incoming data.
* The system places an absolute limit on these values, on Linux, for example, the
* default buffer size is typically 50K and can be increased to maximally 100K.
* </para>
* <para>
* The udpsrc is always a live source. It does however not provide a GstClock, this
* is left for upstream elements such as an RTP session manager or demuxer (such
* as an MPEG demuxer).
@ -70,9 +79,11 @@
* udpsrc implements a GstURIHandler interface that handles udp://host:port type
* URIs.
* </para>
*
* Last reviewed on 2006-07-27 (0.10.4)
*
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@ -117,10 +128,12 @@ static const GstElementDetails gst_udpsrc_details =
GST_ELEMENT_DETAILS ("UDP packet receiver",
"Source/Network",
"Receive data over the network via UDP",
"Wim Taymans <wim@fluendo.com>");
"Wim Taymans <wim@fluendo.com>\n"
"Thijs Vermeir <thijs.vermeir@barco.com>");
#define UDP_DEFAULT_PORT 4951
#define UDP_DEFAULT_MULTICAST_GROUP "0.0.0.0"
#define UDP_DEFAULT_BUFFER 0
#define UDP_DEFAULT_URI "udp://"UDP_DEFAULT_MULTICAST_GROUP":"G_STRINGIFY(UDP_DEFAULT_PORT)
#define UDP_DEFAULT_CAPS NULL
#define UDP_DEFAULT_SOCKFD -1
@ -132,7 +145,8 @@ enum
PROP_MULTICAST_GROUP,
PROP_URI,
PROP_CAPS,
PROP_SOCKFD
PROP_SOCKFD,
PROP_BUFFER
/* FILL ME */
};
@ -192,11 +206,11 @@ gst_udpsrc_class_init (GstUDPSrcClass * klass)
gobject_class->get_property = gst_udpsrc_get_property;
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT,
g_param_spec_int ("port", "port",
g_param_spec_int ("port", "Port",
"The port to receive the packets from, 0=allocate", 0, G_MAXUINT16,
UDP_DEFAULT_PORT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_MULTICAST_GROUP,
g_param_spec_string ("multicast_group", "multicast_group",
g_param_spec_string ("multicast_group", "Multicast Group",
"The Address of multicast group to join", UDP_DEFAULT_MULTICAST_GROUP,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_URI,
@ -207,9 +221,13 @@ gst_udpsrc_class_init (GstUDPSrcClass * klass)
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_SOCKFD,
g_param_spec_int ("sockfd", "socket handle",
g_param_spec_int ("sockfd", "Socket Handle",
"Socket to use for UDP reception. (-1 == allocate)",
-1, G_MAXINT, UDP_DEFAULT_SOCKFD, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BUFFER,
g_param_spec_int ("buffer", "Buffer",
"Number of bytes of the UDP Buffer, 0=default", 0, G_MAXINT,
UDP_DEFAULT_BUFFER, G_PARAM_READWRITE));
gstbasesrc_class->start = gst_udpsrc_start;
gstbasesrc_class->stop = gst_udpsrc_stop;
@ -229,6 +247,7 @@ gst_udpsrc_init (GstUDPSrc * udpsrc, GstUDPSrcClass * g_class)
udpsrc->sock = UDP_DEFAULT_SOCKFD;
udpsrc->multi_group = g_strdup (UDP_DEFAULT_MULTICAST_GROUP);
udpsrc->uri = g_strdup (UDP_DEFAULT_URI);
udpsrc->buffer = UDP_DEFAULT_BUFFER;
}
static GstCaps *
@ -354,6 +373,7 @@ gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf)
break;
}
/* special case buffer so receivers can also track the address */
outbuf = gst_netbuffer_new ();
GST_BUFFER_DATA (outbuf) = (guint8 *) pktdata;
GST_BUFFER_MALLOCDATA (outbuf) = (guint8 *) pktdata;
@ -362,14 +382,15 @@ gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf)
gst_netaddress_set_ip4_address (&outbuf->from, tmpaddr.sin_addr.s_addr,
tmpaddr.sin_port);
gst_buffer_set_caps (GST_BUFFER (outbuf), udpsrc->caps);
gst_buffer_set_caps (GST_BUFFER_CAST (outbuf), udpsrc->caps);
GST_LOG_OBJECT (udpsrc, "read %d bytes", readsize);
*buf = GST_BUFFER (outbuf);
*buf = GST_BUFFER_CAST (outbuf);
return GST_FLOW_OK;
/* ERRORS */
select_error:
{
GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
@ -452,6 +473,9 @@ gst_udpsrc_set_property (GObject * object, guint prop_id, const GValue * value,
GstUDPSrc *udpsrc = GST_UDPSRC (object);
switch (prop_id) {
case PROP_BUFFER:
udpsrc->buffer = g_value_get_int (value);
break;
case PROP_PORT:
udpsrc->port = g_value_get_int (value);
gst_udpsrc_update_uri (udpsrc);
@ -503,6 +527,9 @@ gst_udpsrc_get_property (GObject * object, guint prop_id, GValue * value,
GstUDPSrc *udpsrc = GST_UDPSRC (object);
switch (prop_id) {
case PROP_BUFFER:
g_value_set_int (value, udpsrc->buffer);
break;
case PROP_PORT:
g_value_set_int (value, udpsrc->port);
break;
@ -535,6 +562,7 @@ gst_udpsrc_start (GstBaseSrc * bsrc)
int port;
GstUDPSrc *src;
gint ret;
int rcvsize;
src = GST_UDPSRC (bsrc);
@ -592,6 +620,34 @@ gst_udpsrc_start (GstBaseSrc * bsrc)
if ((ret = getsockname (src->sock, (struct sockaddr *) &my_addr, &len)) < 0)
goto getsockname_error;
len = sizeof (rcvsize);
if (src->buffer != 0) {
rcvsize = src->buffer;
GST_DEBUG_OBJECT (src, "setting udp buffer of %d bytes", rcvsize);
/* set buffer size, Note that on Linux this is typically limited to a
* maximum of around 100K. Also a minimum of 128 bytes is required on
* Linux. */
ret = setsockopt (src->sock, SOL_SOCKET, SO_RCVBUF, (void *) &rcvsize, len);
if (ret != 0)
goto udpbuffer_error;
}
/* read the value of the receive buffer. Note that on linux this returns 2x the
* value we set because the kernel allocates extra memory for metadata.
* The default on Linux is about 100K (which is about 50K without metadata) */
ret = getsockopt (src->sock, SOL_SOCKET, SO_RCVBUF, (void *) &rcvsize, &len);
if (ret == 0)
GST_DEBUG_OBJECT (src, "have udp buffer of %d bytes", rcvsize);
else
GST_DEBUG_OBJECT (src, "could not get udp buffer size");
bc_val = 1;
if ((ret =
setsockopt (src->sock, SOL_SOCKET, SO_BROADCAST, &bc_val,
sizeof (bc_val))) < 0)
goto no_broadcast;
port = ntohs (my_addr.sin_port);
GST_DEBUG_OBJECT (src, "bound, on port %d", port);
if (port != src->port) {
@ -600,12 +656,6 @@ gst_udpsrc_start (GstBaseSrc * bsrc)
g_object_notify (G_OBJECT (src), "port");
}
bc_val = 1;
if ((ret =
setsockopt (src->sock, SOL_SOCKET, SO_BROADCAST, &bc_val,
sizeof (bc_val))) < 0)
goto no_broadcast;
src->myaddr.sin_port = htons (src->port + 1);
return TRUE;
@ -655,6 +705,15 @@ getsockname_error:
("getsockname failed %d: %s (%d)", ret, g_strerror (errno), errno));
return FALSE;
}
udpbuffer_error:
{
close (src->sock);
src->sock = -1;
GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
("Could not create a buffer of the size requested, %d: %s (%d)", ret,
g_strerror (errno), errno));
return FALSE;
}
no_broadcast:
{
CLOSE_SOCKET (src->sock);

3
gst/udp/gstudpsrc.h
View file

@ -51,11 +51,12 @@ typedef struct _GstUDPSrcClass GstUDPSrcClass;
struct _GstUDPSrc {
GstPushSrc parent;
/* properties */
gchar *uri;
int port;
gchar *multi_group;
gint ttl;
gint buffer;
int sock;
int control_sock[2];