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 along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 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, CACHING_TEXT,
64 CACHING_LONGTEXT, true )
66 add_obsolete_integer( "server-port" ) /* since 1.2.0 */
68 set_capability( "access", 0 )
69 add_shortcut( "udp", "udpstream", "udp4", "udp6" )
71 set_callbacks( Open, Close )
74 /*****************************************************************************
76 *****************************************************************************/
77 static block_t *BlockUDP( access_t * );
78 static int Control( access_t *, int, va_list );
80 /*****************************************************************************
81 * Open: open the socket
82 *****************************************************************************/
83 static int Open( vlc_object_t *p_this )
85 access_t *p_access = (access_t*)p_this;
87 char *psz_name = strdup( p_access->psz_location );
89 const char *psz_server_addr, *psz_bind_addr = "";
90 int i_bind_port = 1234, i_server_port = 0;
95 access_InitFields( p_access );
96 ACCESS_SET_CALLBACKS( NULL, BlockUDP, Control, NULL );
98 if (strlen (p_access->psz_access) > 0)
100 switch (p_access->psz_access[strlen (p_access->psz_access) - 1])
112 /* Parse psz_name syntax :
113 * [serveraddr[:serverport]][@[bindaddr]:[bindport]] */
114 psz_parser = strchr( psz_name, '@' );
115 if( psz_parser != NULL )
117 /* Found bind address and/or bind port */
118 *psz_parser++ = '\0';
119 psz_bind_addr = psz_parser;
121 if( psz_bind_addr[0] == '[' )
122 /* skips bracket'd IPv6 address */
123 psz_parser = strchr( psz_parser, ']' );
125 if( psz_parser != NULL )
127 psz_parser = strchr( psz_parser, ':' );
128 if( psz_parser != NULL )
130 *psz_parser++ = '\0';
131 i_bind_port = atoi( psz_parser );
136 psz_server_addr = psz_name;
137 psz_parser = ( psz_server_addr[0] == '[' )
138 ? strchr( psz_name, ']' ) /* skips bracket'd IPv6 address */
141 if( psz_parser != NULL )
143 psz_parser = strchr( psz_parser, ':' );
144 if( psz_parser != NULL )
146 *psz_parser++ = '\0';
147 i_server_port = atoi( psz_parser );
151 msg_Dbg( p_access, "opening server=%s:%d local=%s:%d",
152 psz_server_addr, i_server_port, psz_bind_addr, i_bind_port );
154 fd = net_OpenDgram( p_access, psz_bind_addr, i_bind_port,
155 psz_server_addr, i_server_port, fam, IPPROTO_UDP );
159 msg_Err( p_access, "cannot open socket" );
162 p_access->p_sys = (void *)(intptr_t)fd;
164 /* Update default_pts to a suitable value for udp access */
165 var_Create( p_access, "udp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
169 /*****************************************************************************
170 * Close: free unused data structures
171 *****************************************************************************/
172 static void Close( vlc_object_t *p_this )
174 access_t *p_access = (access_t*)p_this;
176 net_Close( (intptr_t)p_access->p_sys );
179 /*****************************************************************************
181 *****************************************************************************/
182 static int Control( access_t *p_access, int i_query, va_list args )
190 case ACCESS_CAN_SEEK:
191 case ACCESS_CAN_FASTSEEK:
192 case ACCESS_CAN_PAUSE:
193 case ACCESS_CAN_CONTROL_PACE:
194 pb_bool = (bool*)va_arg( args, bool* );
198 case ACCESS_GET_PTS_DELAY:
199 pi_64 = (int64_t*)va_arg( args, int64_t * );
200 *pi_64 = var_GetInteger(p_access,"udp-caching") * 1000;
204 case ACCESS_SET_PAUSE_STATE:
205 case ACCESS_GET_TITLE_INFO:
206 case ACCESS_SET_TITLE:
207 case ACCESS_SET_SEEKPOINT:
208 case ACCESS_SET_PRIVATE_ID_STATE:
209 case ACCESS_GET_CONTENT_TYPE:
213 msg_Warn( p_access, "unimplemented query in control" );
220 /*****************************************************************************
222 *****************************************************************************/
223 static block_t *BlockUDP( access_t *p_access )
225 access_sys_t *p_sys = p_access->p_sys;
229 if( p_access->info.b_eof )
233 p_block = block_New( p_access, MTU );
234 len = net_Read( p_access, (intptr_t)p_sys, NULL,
235 p_block->p_buffer, MTU, false );
238 block_Release( p_block );
242 return block_Realloc( p_block, 0, len );