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 )
67 set_capability( "access", 0 )
68 add_shortcut( "udp", "udpstream", "udp4", "udp6" )
70 set_callbacks( Open, Close )
73 /*****************************************************************************
75 *****************************************************************************/
76 static block_t *BlockUDP( access_t * );
77 static int Control( access_t *, int, va_list );
79 /*****************************************************************************
80 * Open: open the socket
81 *****************************************************************************/
82 static int Open( vlc_object_t *p_this )
84 access_t *p_access = (access_t*)p_this;
86 char *psz_name = strdup( p_access->psz_location );
88 const char *psz_server_addr, *psz_bind_addr = "";
89 int i_bind_port, i_server_port = 0;
94 access_InitFields( p_access );
95 ACCESS_SET_CALLBACKS( NULL, BlockUDP, Control, NULL );
97 if (strlen (p_access->psz_access) > 0)
99 switch (p_access->psz_access[strlen (p_access->psz_access) - 1])
111 i_bind_port = var_InheritInteger( p_access, "server-port" );
113 /* Parse psz_name syntax :
114 * [serveraddr[:serverport]][@[bindaddr]:[bindport]] */
115 psz_parser = strchr( psz_name, '@' );
116 if( psz_parser != NULL )
118 /* Found bind address and/or bind port */
119 *psz_parser++ = '\0';
120 psz_bind_addr = psz_parser;
122 if( psz_bind_addr[0] == '[' )
123 /* skips bracket'd IPv6 address */
124 psz_parser = strchr( psz_parser, ']' );
126 if( psz_parser != NULL )
128 psz_parser = strchr( psz_parser, ':' );
129 if( psz_parser != NULL )
131 *psz_parser++ = '\0';
132 i_bind_port = atoi( psz_parser );
137 psz_server_addr = psz_name;
138 psz_parser = ( psz_server_addr[0] == '[' )
139 ? strchr( psz_name, ']' ) /* skips bracket'd IPv6 address */
142 if( psz_parser != NULL )
144 psz_parser = strchr( psz_parser, ':' );
145 if( psz_parser != NULL )
147 *psz_parser++ = '\0';
148 i_server_port = atoi( psz_parser );
152 msg_Dbg( p_access, "opening server=%s:%d local=%s:%d",
153 psz_server_addr, i_server_port, psz_bind_addr, i_bind_port );
155 fd = net_OpenDgram( p_access, psz_bind_addr, i_bind_port,
156 psz_server_addr, i_server_port, fam, IPPROTO_UDP );
160 msg_Err( p_access, "cannot open socket" );
163 p_access->p_sys = (void *)(intptr_t)fd;
165 /* Update default_pts to a suitable value for udp access */
166 var_Create( p_access, "udp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
170 /*****************************************************************************
171 * Close: free unused data structures
172 *****************************************************************************/
173 static void Close( vlc_object_t *p_this )
175 access_t *p_access = (access_t*)p_this;
177 net_Close( (intptr_t)p_access->p_sys );
180 /*****************************************************************************
182 *****************************************************************************/
183 static int Control( access_t *p_access, int i_query, va_list args )
191 case ACCESS_CAN_SEEK:
192 case ACCESS_CAN_FASTSEEK:
193 case ACCESS_CAN_PAUSE:
194 case ACCESS_CAN_CONTROL_PACE:
195 pb_bool = (bool*)va_arg( args, bool* );
199 case ACCESS_GET_PTS_DELAY:
200 pi_64 = (int64_t*)va_arg( args, int64_t * );
201 *pi_64 = var_GetInteger(p_access,"udp-caching") * 1000;
205 case ACCESS_SET_PAUSE_STATE:
206 case ACCESS_GET_TITLE_INFO:
207 case ACCESS_SET_TITLE:
208 case ACCESS_SET_SEEKPOINT:
209 case ACCESS_SET_PRIVATE_ID_STATE:
210 case ACCESS_GET_CONTENT_TYPE:
214 msg_Warn( p_access, "unimplemented query in control" );
221 /*****************************************************************************
223 *****************************************************************************/
224 static block_t *BlockUDP( access_t *p_access )
226 access_sys_t *p_sys = p_access->p_sys;
230 if( p_access->info.b_eof )
234 p_block = block_New( p_access, MTU );
235 len = net_Read( p_access, (intptr_t)p_sys, NULL,
236 p_block->p_buffer, MTU, false );
239 block_Release( p_block );
243 return block_Realloc( p_block, 0, len );