mirrors/vlc
0
0
Fork 0
mirror of https://github.com/videolan/vlc.git synced 2024-12-11 18:54:36 +08:00
Code Issues Packages Projects Releases Wiki Activity
b4b9d3840f
vlc/modules/access/udp.c
Rémi Denis-Courmont 6d4bc50f38 Rename access_t.psz_path to psz_location
2010-05-10 23:31:57 +03:00

252 lines
7.7 KiB
C
Raw Blame History

/*****************************************************************************
* udp.c: raw UDP input module
*****************************************************************************
* Copyright (C) 2001-2005 the VideoLAN team
* Copyright (C) 2007 Remi Denis-Courmont
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Tristan Leteurtre <tooney@via.ecp.fr>
* Laurent Aimar <fenrir@via.ecp.fr>
* Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
* Remi Denis-Courmont
*
* Reviewed: 23 October 2003, Jean-Paul Saman <jpsaman _at_ videolan _dot_ org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_access.h>
#include <vlc_network.h>
#define MTU 65535
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( \
"Caching value for UDP streams. This " \
"value should be set in milliseconds." )
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin ()
set_shortname( N_("UDP" ) )
set_description( N_("UDP input") )
set_category( CAT_INPUT )
set_subcategory( SUBCAT_INPUT_ACCESS )
add_integer( "udp-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
CACHING_LONGTEXT, true )
change_safe()
add_obsolete_integer( "rtp-late" )
add_obsolete_bool( "udp-auto-mtu" )
set_capability( "access", 0 )
add_shortcut( "udp" )
add_shortcut( "udpstream" )
add_shortcut( "udp4" )
add_shortcut( "udp6" )
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* Local prototypes
*****************************************************************************/
#define RTP_HEADER_LEN 12
static block_t *BlockUDP( access_t * );
static int Control( access_t *, int, va_list );
/*****************************************************************************
* Open: open the socket
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
access_t *p_access = (access_t*)p_this;
char *psz_name = strdup( p_access->psz_location );
char *psz_parser;
const char *psz_server_addr, *psz_bind_addr = "";
int i_bind_port, i_server_port = 0;
int fam = AF_UNSPEC;
int fd;
/* Set up p_access */
access_InitFields( p_access );
ACCESS_SET_CALLBACKS( NULL, BlockUDP, Control, NULL );
if (strlen (p_access->psz_access) > 0)
{
switch (p_access->psz_access[strlen (p_access->psz_access) - 1])
{
case '4':
fam = AF_INET;
break;
case '6':
fam = AF_INET6;
break;
}
}
i_bind_port = var_CreateGetInteger( p_access, "server-port" );
/* Parse psz_name syntax :
* [serveraddr[:serverport]][@[bindaddr]:[bindport]] */
psz_parser = strchr( psz_name, '@' );
if( psz_parser != NULL )
{
/* Found bind address and/or bind port */
*psz_parser++ = '\0';
psz_bind_addr = psz_parser;
if( psz_bind_addr[0] == '[' )
/* skips bracket'd IPv6 address */
psz_parser = strchr( psz_parser, ']' );
if( psz_parser != NULL )
{
psz_parser = strchr( psz_parser, ':' );
if( psz_parser != NULL )
{
*psz_parser++ = '\0';
i_bind_port = atoi( psz_parser );
}
}
}
psz_server_addr = psz_name;
psz_parser = ( psz_server_addr[0] == '[' )
? strchr( psz_name, ']' ) /* skips bracket'd IPv6 address */
: psz_name;
if( psz_parser != NULL )
{
psz_parser = strchr( psz_parser, ':' );
if( psz_parser != NULL )
{
*psz_parser++ = '\0';
i_server_port = atoi( psz_parser );
}
}
msg_Dbg( p_access, "opening server=%s:%d local=%s:%d",
psz_server_addr, i_server_port, psz_bind_addr, i_bind_port );
fd = net_OpenDgram( p_access, psz_bind_addr, i_bind_port,
psz_server_addr, i_server_port, fam, IPPROTO_UDP );
free (psz_name);
if( fd == -1 )
{
msg_Err( p_access, "cannot open socket" );
return VLC_EGENERIC;
}
p_access->p_sys = (void *)(intptr_t)fd;
/* Update default_pts to a suitable value for udp access */
var_Create( p_access, "udp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: free unused data structures
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
access_t *p_access = (access_t*)p_this;
net_Close( (intptr_t)p_access->p_sys );
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( access_t *p_access, int i_query, va_list args )
{
bool *pb_bool;
int64_t *pi_64;
switch( i_query )
{
/* */
case ACCESS_CAN_SEEK:
case ACCESS_CAN_FASTSEEK:
case ACCESS_CAN_PAUSE:
case ACCESS_CAN_CONTROL_PACE:
pb_bool = (bool*)va_arg( args, bool* );
*pb_bool = false;
break;
/* */
case ACCESS_GET_PTS_DELAY:
pi_64 = (int64_t*)va_arg( args, int64_t * );
*pi_64 = (int64_t)var_GetInteger(p_access,"udp-caching") * 1000;
break;
/* */
case ACCESS_SET_PAUSE_STATE:
case ACCESS_GET_TITLE_INFO:
case ACCESS_SET_TITLE:
case ACCESS_SET_SEEKPOINT:
case ACCESS_SET_PRIVATE_ID_STATE:
case ACCESS_GET_CONTENT_TYPE:
return VLC_EGENERIC;
default:
msg_Warn( p_access, "unimplemented query in control" );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* BlockUDP:
*****************************************************************************/
static block_t *BlockUDP( access_t *p_access )
{
access_sys_t *p_sys = p_access->p_sys;
block_t *p_block;
ssize_t len;
if( p_access->info.b_eof )
return NULL;
/* Read data */
p_block = block_New( p_access, MTU );
len = net_Read( p_access, (intptr_t)p_sys, NULL,
p_block->p_buffer, MTU, false );
if( len < 0 )
{
block_Release( p_block );
return NULL;
}
return block_Realloc( p_block, 0, len );
}
Reference in New Issue View Git Blame Copy Permalink