git.sesse.net Git - vlc/blob - src/playlist/services_discovery.c

   1 /*****************************************************************************
   2  * services_discovery.c : Manage playlist services_discovery modules
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 VideoLAN
   5  * $Id: playlist.c 9216 2004-11-07 10:43:52Z zorglub $
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23 #include <stdlib.h>                                      /* free(), strtol() */
  24 #include <stdio.h>                                              /* sprintf() */
  25 #include <string.h>                                            /* strerror() */
  26
  27 #include <vlc/vlc.h>
  28 #include <vlc/vout.h>
  29 #include <vlc/sout.h>
  30 #include <vlc/input.h>
  31
  32 #include "vlc_playlist.h"
  33
  34 /*****************************************************************************
  35  * Local prototypes
  36  *****************************************************************************/
  37
  38 static void RunSD( services_discovery_t *p_sd );
  39
  40
  41 /***************************************************************************
  42 ***************************************************************************/
  43
  44 int playlist_ServicesDiscoveryAdd( playlist_t *p_playlist,
  45                                    const char *psz_module )
  46 {
  47     services_discovery_t *p_sd;
  48
  49     p_sd = vlc_object_create( p_playlist, VLC_OBJECT_SD );
  50     p_sd->pf_run = NULL;
  51
  52     p_sd->p_module = module_Need( p_sd, "services_discovery", psz_module, 0 );
  53
  54     if( p_sd->p_module == NULL )
  55     {
  56         msg_Err( p_playlist, "no suitable services discovery module" );
  57         vlc_object_destroy( p_sd );
  58         return VLC_EGENERIC;
  59     }
  60
  61     p_sd->psz_module = strdup( psz_module );
  62     p_sd->b_die = VLC_FALSE;
  63
  64     vlc_mutex_lock( &p_playlist->object_lock );
  65
  66     INSERT_ELEM( p_playlist->pp_sds, p_playlist->i_sds, p_playlist->i_sds,
  67                  p_sd );
  68
  69     vlc_mutex_unlock( &p_playlist->object_lock );
  70
  71     if( vlc_thread_create( p_sd, "services_discovery", RunSD,
  72                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
  73     {
  74         msg_Err( p_sd, "cannot create services discovery thread" );
  75         vlc_object_destroy( p_sd );
  76         return VLC_EGENERIC;
  77     }
  78
  79
  80     return VLC_SUCCESS;
  81 }
  82
  83 int playlist_ServicesDiscoveryRemove( playlist_t * p_playlist,
  84                                        const char *psz_module )
  85 {
  86     int i;
  87     services_discovery_t *p_sd = NULL;
  88     vlc_mutex_lock( &p_playlist->object_lock );
  89
  90     for( i = 0 ; i< p_playlist->i_sds ; i ++ )
  91     {
  92         if( !strcmp( psz_module, p_playlist->pp_sds[i]->psz_module ) )
  93         {
  94             p_sd = p_playlist->pp_sds[i];
  95             REMOVE_ELEM( p_playlist->pp_sds, p_playlist->i_sds, i );
  96             break;
  97         }
  98     }
  99
 100     if( p_sd )
 101     {
 102         vlc_mutex_unlock( &p_playlist->object_lock );
 103         p_sd->b_die = VLC_TRUE;
 104         vlc_thread_join( p_sd );
 105         module_Unneed( p_sd, p_sd->p_module );
 106         vlc_mutex_lock( &p_playlist->object_lock );
 107         vlc_object_destroy( p_sd );
 108     }
 109     else
 110     {
 111         msg_Warn( p_playlist, "module %s is not loaded", psz_module );
 112         vlc_mutex_unlock( &p_playlist->object_lock );
 113         return VLC_EGENERIC;
 114     }
 115
 116     vlc_mutex_unlock( &p_playlist->object_lock );
 117     return VLC_SUCCESS;
 118 }
 119
 120 vlc_bool_t playlist_IsServicesDiscoveryLoaded( playlist_t * p_playlist,
 121                                               const char *psz_module )
 122 {
 123     int i;
 124     vlc_mutex_lock( &p_playlist->object_lock );
 125
 126     for( i = 0 ; i< p_playlist->i_sds ; i ++ )
 127     {
 128         if( !strcmp( psz_module, p_playlist->pp_sds[i]->psz_module ) )
 129         {
 130             vlc_mutex_unlock( &p_playlist->object_lock );
 131             return VLC_TRUE;
 132         }
 133     }
 134     vlc_mutex_unlock( &p_playlist->object_lock );
 135     return VLC_FALSE;
 136 }
 137
 138
 139 /**
 140  * Load all service discovery modules in a string
 141  *
 142  * \param p_playlist the playlist
 143  * \param psz_modules a list of modules separated by commads
 144  * return VLC_SUCCESS or an error
 145  */
 146 int playlist_AddSDModules( playlist_t *p_playlist, char *psz_modules )
 147 {
 148     if( psz_modules && *psz_modules )
 149     {
 150         char *psz_parser = psz_modules;
 151         char *psz_next;
 152
 153         while( psz_parser && *psz_parser )
 154         {
 155             while( *psz_parser == ' ' || *psz_parser == ',' )
 156             {
 157                 psz_parser++;
 158             }
 159
 160             if( (psz_next = strchr( psz_parser, ',' ) ) )
 161             {
 162                 *psz_next++ = '\0';
 163             }
 164             if( *psz_parser == '\0' )
 165             {
 166                 break;
 167             }
 168
 169             playlist_ServicesDiscoveryAdd( p_playlist, psz_parser );
 170
 171             psz_parser = psz_next;
 172         }
 173     }
 174     return VLC_SUCCESS;
 175 }
 176
 177 static void RunSD( services_discovery_t *p_sd )
 178 {
 179     p_sd->pf_run( p_sd );
 180     return;
 181 }