/* GStreamer
* Copyright (C) <2005> Wim Taymans <wim@fluendo.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:gstnetbuffer
* @short_description: Buffer for use in network sources and sinks
*
* #GstNetBuffer is a subclass of a normal #GstBuffer that contains two
* additional metadata fields of type #GstNetAddress named 'to' and 'from'. The
* buffer can be used to store additional information about the origin of the
* buffer data and is used in various network elements to track the to and from
* addresses.
*
* Last reviewed on 2006-08-21 (0.10.10)
*/
#include <string.h>
#include "gstnetbuffer.h"
static void gst_netbuffer_init (GTypeInstance * instance, gpointer g_class);
static void gst_netbuffer_class_init (gpointer g_class, gpointer class_data);
static void gst_netbuffer_finalize (GstNetBuffer * nbuf);
static GstNetBuffer *gst_netbuffer_copy (GstNetBuffer * nbuf);
static GstBufferClass *parent_class;
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GType
gst_netbuffer_get_type (void)
{
static GType _gst_netbuffer_type = 0;
if (G_UNLIKELY (_gst_netbuffer_type == 0)) {
static const GTypeInfo netbuffer_info = {
sizeof (GstNetBufferClass),
NULL,
NULL,
gst_netbuffer_class_init,
NULL,
NULL,
sizeof (GstNetBuffer),
0,
gst_netbuffer_init,
NULL
};
_gst_netbuffer_type = g_type_register_static (GST_TYPE_BUFFER,
"GstNetBuffer", &netbuffer_info, 0);
}
return _gst_netbuffer_type;
}
static void
gst_netbuffer_class_init (gpointer g_class, gpointer class_data)
{
GstMiniObjectClass *mo_class = GST_MINI_OBJECT_CLASS (g_class);
parent_class = g_type_class_peek_parent (g_class);
mo_class->copy = (GstMiniObjectCopyFunction) gst_netbuffer_copy;
mo_class->finalize = (GstMiniObjectFinalizeFunction) gst_netbuffer_finalize;
}
static void
gst_netbuffer_init (GTypeInstance * instance, gpointer g_class)
{
}
static void
gst_netbuffer_finalize (GstNetBuffer * nbuf)
{
GST_MINI_OBJECT_CLASS (parent_class)->finalize (GST_MINI_OBJECT (nbuf));
}
static GstNetBuffer *
gst_netbuffer_copy (GstNetBuffer * nbuf)
{
GstNetBuffer *copy;
copy = gst_netbuffer_new ();
/* we simply copy everything from our parent */
GST_BUFFER_DATA (copy) =
g_memdup (GST_BUFFER_DATA (nbuf), GST_BUFFER_SIZE (nbuf));
/* make sure it gets freed (even if the parent is subclassed, we return a
normal buffer) */
GST_BUFFER_MALLOCDATA (copy) = GST_BUFFER_DATA (copy);
GST_BUFFER_SIZE (copy) = GST_BUFFER_SIZE (nbuf);
memcpy (©->to, &nbuf->to, sizeof (nbuf->to));
memcpy (©->from, &nbuf->from, sizeof (nbuf->from));
/* copy metadata */
gst_buffer_copy_metadata (GST_BUFFER_CAST (copy),
GST_BUFFER_CAST (nbuf), GST_BUFFER_COPY_ALL);
return copy;
}
/**
* gst_netbuffer_new:
*
* Create a new network buffer.
*
* Returns: a new #GstNetBuffer.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GstNetBuffer *
gst_netbuffer_new (void)
{
GstNetBuffer *buf;
buf = (GstNetBuffer *) gst_mini_object_new (GST_TYPE_NETBUFFER);
return buf;
}
/**
* gst_netaddress_set_ip4_address:
* @naddr: a network address
* @address: an IPv4 network address.
* @port: a port number to set.
*
* Set @naddr with the IPv4 @address and @port pair.
*
* Note that @port and @address must be expressed in network byte order,
* use g_htons() and g_htonl() to convert them to network byte order.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
gst_netaddress_set_ip4_address (GstNetAddress * naddr, guint32 address,
guint16 port)
{
g_return_if_fail (naddr != NULL);
naddr->type = GST_NET_TYPE_IP4;
naddr->address.ip4 = address;
naddr->port = port;
}
/**
* gst_netaddress_set_ip6_address:
* @naddr: a network address
* @address: an IPv6 network address.
* @port: a port number to set.
*
* Set @naddr with the IPv6 @address and @port pair.
*
* Note that @port must be expressed in network byte order, use g_htons() to convert
* it to network byte order.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
gst_netaddress_set_ip6_address (GstNetAddress * naddr, guint8 address[16],
guint16 port)
{
g_return_if_fail (naddr != NULL);
naddr->type = GST_NET_TYPE_IP6;
memcpy (&naddr->address.ip6, address, 16);
naddr->port = port;
}
/**
* gst_netaddress_get_net_type:
* @naddr: a network address
*
* Get the type of address stored in @naddr.
*
* Returns: the network type stored in @naddr.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
GstNetType
gst_netaddress_get_net_type (const GstNetAddress * naddr)
{
g_return_val_if_fail (naddr != NULL, GST_NET_TYPE_UNKNOWN);
return naddr->type;
}
/**
* gst_netaddress_get_ip4_address:
* @naddr: a network address
* @address: a location to store the address.
* @port: a location to store the port.
*
* Get the IPv4 address stored in @naddr into @address. This function requires
* that the address type of @naddr is of type #GST_NET_TYPE_IP4.
*
* Note that @port and @address are expressed in network byte order, use
* g_ntohs() and g_ntohl() to convert them to host order.
*
* Returns: TRUE if the address could be retrieved.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gboolean
gst_netaddress_get_ip4_address (const GstNetAddress * naddr, guint32 * address,
guint16 * port)
{
g_return_val_if_fail (naddr != NULL, FALSE);
if (naddr->type == GST_NET_TYPE_UNKNOWN || naddr->type == GST_NET_TYPE_IP6)
return FALSE;
if (address)
*address = naddr->address.ip4;
if (port)
*port = naddr->port;
return TRUE;
}
/**
* gst_netaddress_get_ip6_address:
* @naddr: a network address
* @address: a location to store the result.
* @port: a location to store the port.
*
* Get the IPv6 address stored in @naddr into @address.
*
* If @naddr is of type GST_NET_TYPE_IP4, the transitional IP6 address is
* returned.
*
* Note that @port is expressed in network byte order, use g_ntohs() to convert
* it to host order.
*
* Returns: TRUE if the address could be retrieved.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gboolean
gst_netaddress_get_ip6_address (const GstNetAddress * naddr, guint8 address[16],
guint16 * port)
{
static guint8 ip4_transition[16] =
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF };
g_return_val_if_fail (naddr != NULL, FALSE);
if (naddr->type == GST_NET_TYPE_UNKNOWN)
return FALSE;
if (address) {
if (naddr->type == GST_NET_TYPE_IP6) {
memcpy (address, naddr->address.ip6, 16);
} else { /* naddr->type == GST_NET_TYPE_IP4 */
memcpy (address, ip4_transition, 12);
memcpy (address + 12, (guint8 *) & (naddr->address.ip4), 4);
}
}
if (port)
*port = naddr->port;
return TRUE;
}
/**
* gst_netaddress_get_address_bytes:
* @naddr: a network address
* @address: a location to store the result.
* @port: a location to store the port.
*
* Get just the address bytes stored in @naddr into @address.
*
* Note that @port is expressed in network byte order, use g_ntohs() to convert
* it to host order. IP4 addresses are also stored in network byte order.
*
* Returns: number of bytes actually copied
*
* Since: 0.10.22
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gint
gst_netaddress_get_address_bytes (const GstNetAddress * naddr,
guint8 address[16], guint16 * port)
{
gint ret = 0;
g_return_val_if_fail (naddr != NULL, FALSE);
if (naddr->type == GST_NET_TYPE_UNKNOWN)
return 0;
if (address) {
if (naddr->type == GST_NET_TYPE_IP6) {
memcpy (address, naddr->address.ip6, 16);
ret = 16;
} else { /* naddr->type == GST_NET_TYPE_IP4 */
memcpy (address, (guint8 *) & (naddr->address.ip4), 4);
ret = 4;
}
}
if (port)
*port = naddr->port;
return ret;
}
/**
* gst_netaddress_set_address_bytes:
* @naddr: a network address
* @address: a location to store the result.
* @port: a location to store the port.
*
* Set just the address bytes stored in @naddr into @address.
*
* Note that @port must be expressed in network byte order, use g_htons() to convert
* it to network byte order order. IP4 address bytes must also be stored in
* network byte order.
*
* Returns: number of bytes actually copied
*
* Since: 0.10.22
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gint
gst_netaddress_set_address_bytes (GstNetAddress * naddr, GstNetType type,
guint8 address[16], guint16 port)
{
gint len = 0;
g_return_val_if_fail (naddr != NULL, 0);
naddr->type = type;
switch (naddr->type) {
case GST_NET_TYPE_UNKNOWN:
case GST_NET_TYPE_IP6:
len = 16;
memcpy (naddr->address.ip6, address, 16);
break;
case GST_NET_TYPE_IP4:
len = 4;
memcpy ((guint8 *) & (naddr->address.ip4), address, 4);
break;
}
if (port)
naddr->port = port;
return len;
}
/**
* gst_netaddress_equal:
* @naddr1: The first #GstNetAddress
* @naddr2: The second #GstNetAddress
*
* Compare two #GstNetAddress structures
*
* Returns: TRUE if they are identical, FALSE otherwise
*
* Since: 0.10.18
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gboolean
gst_netaddress_equal (const GstNetAddress * naddr1,
const GstNetAddress * naddr2)
{
g_return_val_if_fail (naddr1 != NULL, FALSE);
g_return_val_if_fail (naddr2 != NULL, FALSE);
if (naddr1->type != naddr2->type)
return FALSE;
if (naddr1->port != naddr2->port)
return FALSE;
switch (naddr1->type) {
case GST_NET_TYPE_IP4:
if (naddr1->address.ip4 != naddr2->address.ip4)
return FALSE;
break;
case GST_NET_TYPE_IP6:
if (memcmp (naddr1->address.ip6, naddr2->address.ip6,
sizeof (naddr1->address.ip6)))
return FALSE;
break;
default:
break;
}
return TRUE;
}
/**
* gst_netaddress_to_string:
* @naddr: a #GstNetAddress
* @dest: destination
* @len: len of @dest
*
* Copies a string representation of @naddr into @dest. Up to @len bytes are
* copied.
*
* Returns: the number of bytes which would be produced if the buffer was large
* enough
*
* Since: 0.10.24
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
gint
gst_netaddress_to_string (const GstNetAddress * naddr, gchar * dest, gulong len)
{
gint result;
g_return_val_if_fail (naddr != NULL, FALSE);
g_return_val_if_fail (dest != NULL, FALSE);
switch (naddr->type) {
case GST_NET_TYPE_IP4:
{
guint32 address;
guint16 port;
gst_netaddress_get_ip4_address (naddr, &address, &port);
address = g_ntohl (address);
result = g_snprintf (dest, len, "%d.%d.%d.%d:%d", (address >> 24) & 0xff,
(address >> 16) & 0xff, (address >> 8) & 0xff, address & 0xff,
g_ntohs (port));
break;
}
case GST_NET_TYPE_IP6:
{
guint8 address[16];
guint16 port;
gst_netaddress_get_ip6_address (naddr, address, &port);
result =
g_snprintf (dest, len, "[%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x]:%d",
(address[0] << 8) | address[1], (address[2] << 8) | address[3],
(address[4] << 8) | address[5], (address[6] << 8) | address[7],
(address[8] << 8) | address[9], (address[10] << 8) | address[11],
(address[12] << 8) | address[13], (address[14] << 8) | address[15],
g_ntohs (port));
break;
}
default:
dest[0] = 0;
result = 0;
break;
}
return result;
}