1 /*****************************************************************************
2 * udp.c: raw UDP input module
3 *****************************************************************************
4 * Copyright (C) 2001-2005 the VideoLAN team
5 * Copyright (C) 2007 Remi Denis-Courmont
8 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * Tristan Leteurtre <tooney@via.ecp.fr>
10 * Laurent Aimar <fenrir@via.ecp.fr>
11 * Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
14 * Reviewed: 23 October 2003, Jean-Paul Saman <jpsaman _at_ videolan _dot_ org>
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
29 *****************************************************************************/
31 /*****************************************************************************
33 *****************************************************************************/
39 #include <vlc_common.h>
40 #include <vlc_plugin.h>
41 #include <vlc_access.h>
42 #include <vlc_network.h>
46 /*****************************************************************************
48 *****************************************************************************/
49 #define CACHING_TEXT N_("Caching value in ms")
50 #define CACHING_LONGTEXT N_( \
51 "Caching value for UDP streams. This " \
52 "value should be set in milliseconds." )
54 static int Open ( vlc_object_t * );
55 static void Close( vlc_object_t * );
58 set_shortname( N_("UDP" ) )
59 set_description( N_("UDP input") )
60 set_category( CAT_INPUT )
61 set_subcategory( SUBCAT_INPUT_ACCESS )
63 add_integer( "udp-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
64 CACHING_LONGTEXT, true );
65 add_obsolete_integer( "rtp-late" )
66 add_obsolete_bool( "udp-auto-mtu" )
68 set_capability( "access", 0 )
70 add_shortcut( "udpstream" )
71 add_shortcut( "udp4" )
72 add_shortcut( "udp6" )
74 set_callbacks( Open, Close )
77 /*****************************************************************************
79 *****************************************************************************/
80 #define RTP_HEADER_LEN 12
82 static block_t *BlockUDP( access_t * );
83 static int Control( access_t *, int, va_list );
85 /*****************************************************************************
86 * Open: open the socket
87 *****************************************************************************/
88 static int Open( vlc_object_t *p_this )
90 access_t *p_access = (access_t*)p_this;
92 char *psz_name = strdup( p_access->psz_path );
94 const char *psz_server_addr, *psz_bind_addr = "";
95 int i_bind_port, i_server_port = 0;
100 access_InitFields( p_access );
101 ACCESS_SET_CALLBACKS( NULL, BlockUDP, Control, NULL );
103 if (strlen (p_access->psz_access) > 0)
105 switch (p_access->psz_access[strlen (p_access->psz_access) - 1])
117 i_bind_port = var_CreateGetInteger( p_access, "server-port" );
119 /* Parse psz_name syntax :
120 * [serveraddr[:serverport]][@[bindaddr]:[bindport]] */
121 psz_parser = strchr( psz_name, '@' );
122 if( psz_parser != NULL )
124 /* Found bind address and/or bind port */
125 *psz_parser++ = '\0';
126 psz_bind_addr = psz_parser;
128 if( psz_bind_addr[0] == '[' )
129 /* skips bracket'd IPv6 address */
130 psz_parser = strchr( psz_parser, ']' );
132 if( psz_parser != NULL )
134 psz_parser = strchr( psz_parser, ':' );
135 if( psz_parser != NULL )
137 *psz_parser++ = '\0';
138 i_bind_port = atoi( psz_parser );
143 psz_server_addr = psz_name;
144 psz_parser = ( psz_server_addr[0] == '[' )
145 ? strchr( psz_name, ']' ) /* skips bracket'd IPv6 address */
148 if( psz_parser != NULL )
150 psz_parser = strchr( psz_parser, ':' );
151 if( psz_parser != NULL )
153 *psz_parser++ = '\0';
154 i_server_port = atoi( psz_parser );
158 msg_Dbg( p_access, "opening server=%s:%d local=%s:%d",
159 psz_server_addr, i_server_port, psz_bind_addr, i_bind_port );
161 fd = net_OpenDgram( p_access, psz_bind_addr, i_bind_port,
162 psz_server_addr, i_server_port, fam, IPPROTO_UDP );
166 msg_Err( p_access, "cannot open socket" );
169 p_access->p_sys = (void *)(intptr_t)fd;
171 /* Update default_pts to a suitable value for udp access */
172 var_Create( p_access, "udp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
176 /*****************************************************************************
177 * Close: free unused data structures
178 *****************************************************************************/
179 static void Close( vlc_object_t *p_this )
181 access_t *p_access = (access_t*)p_this;
183 net_Close( (intptr_t)p_access->p_sys );
186 /*****************************************************************************
188 *****************************************************************************/
189 static int Control( access_t *p_access, int i_query, va_list args )
198 case ACCESS_CAN_SEEK:
199 case ACCESS_CAN_FASTSEEK:
200 case ACCESS_CAN_PAUSE:
201 case ACCESS_CAN_CONTROL_PACE:
202 pb_bool = (bool*)va_arg( args, bool* );
207 pi_int = (int*)va_arg( args, int * );
211 case ACCESS_GET_PTS_DELAY:
212 pi_64 = (int64_t*)va_arg( args, int64_t * );
213 *pi_64 = var_GetInteger( p_access, "udp-caching" ) * 1000;
217 case ACCESS_SET_PAUSE_STATE:
218 case ACCESS_GET_TITLE_INFO:
219 case ACCESS_SET_TITLE:
220 case ACCESS_SET_SEEKPOINT:
221 case ACCESS_SET_PRIVATE_ID_STATE:
222 case ACCESS_GET_CONTENT_TYPE:
226 msg_Warn( p_access, "unimplemented query in control" );
233 /*****************************************************************************
235 *****************************************************************************/
236 static block_t *BlockUDP( access_t *p_access )
238 access_sys_t *p_sys = p_access->p_sys;
242 if( p_access->info.b_eof )
246 p_block = block_New( p_access, MTU );
247 len = net_Read( p_access, (intptr_t)p_sys, NULL,
248 p_block->p_buffer, MTU, false );
251 block_Release( p_block );
255 return block_Realloc( p_block, 0, len );