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 the VideoLAN team
   5  * $Id$
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23 #include <vlc/vlc.h>
  24 #include "vlc_playlist.h"
  25 #include "playlist_internal.h"
  26
  27 static void RunSD( services_discovery_t *p_sd );
  28
  29 int playlist_ServicesDiscoveryAdd( playlist_t *p_playlist,  const char *psz_modules )
  30 {
  31     if( psz_modules && *psz_modules )
  32     {
  33         const char *psz_parser = psz_modules;
  34         char *psz_next;
  35
  36         while( psz_parser && *psz_parser )
  37         {
  38             while( *psz_parser == ' ' || *psz_parser == ':' || *psz_parser == ',' )
  39                 psz_parser++;
  40
  41             if( (psz_next = strchr( psz_parser, ':' ) ) )
  42                 *psz_next++ = '\0';
  43
  44             if( *psz_parser == '\0' )
  45                 break;
  46             msg_Dbg( p_playlist, "Add services_discovery %s", psz_parser );
  47             /* Perform the addition */
  48             {
  49                 services_discovery_t *p_sd = vlc_object_create( p_playlist,
  50                                                                 VLC_OBJECT_SD );
  51                 p_sd->pf_run = NULL;
  52                 p_sd->p_module = module_Need( p_sd, "services_discovery", psz_parser, 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                 p_sd->psz_module = strdup( psz_parser );
  61                 p_sd->b_die = VLC_FALSE;
  62
  63                 PL_LOCK;
  64                 TAB_APPEND( p_playlist->i_sds, p_playlist->pp_sds, p_sd );
  65                 PL_UNLOCK;
  66
  67                 if( !p_sd->pf_run ) {
  68                     psz_parser = psz_next;
  69                     continue;
  70                 }
  71
  72                 if( vlc_thread_create( p_sd, "services_discovery", RunSD,
  73                                        VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
  74                 {
  75                     msg_Err( p_sd, "cannot create services discovery thread" );
  76                     vlc_object_destroy( p_sd );
  77                     return VLC_EGENERIC;
  78                 }
  79             }
  80             psz_parser = psz_next;
  81         }
  82     }
  83     return VLC_SUCCESS;
  84 }
  85
  86 int playlist_ServicesDiscoveryRemove( playlist_t * p_playlist,
  87                                        const char *psz_module )
  88 {
  89     int i;
  90     services_discovery_t *p_sd = NULL;
  91
  92     PL_LOCK;
  93     for( i = 0 ; i< p_playlist->i_sds ; i ++ )
  94     {
  95         if( !strcmp( psz_module, p_playlist->pp_sds[i]->psz_module ) )
  96         {
  97             p_sd = p_playlist->pp_sds[i];
  98             REMOVE_ELEM( p_playlist->pp_sds, p_playlist->i_sds, i );
  99             break;
 100         }
 101     }
 102
 103     if( p_sd )
 104     {
 105         PL_UNLOCK;
 106         p_sd->b_die = VLC_TRUE;
 107         if( p_sd->pf_run ) vlc_thread_join( p_sd );
 108
 109         free( p_sd->psz_module );
 110         module_Unneed( p_sd, p_sd->p_module );
 111         PL_LOCK;
 112         vlc_object_destroy( p_sd );
 113     }
 114     else
 115     {
 116         msg_Warn( p_playlist, "module %s is not loaded", psz_module );
 117         PL_UNLOCK;
 118         return VLC_EGENERIC;
 119     }
 120     PL_UNLOCK;
 121     return VLC_SUCCESS;
 122 }
 123
 124 vlc_bool_t playlist_IsServicesDiscoveryLoaded( playlist_t * p_playlist,
 125                                               const char *psz_module )
 126 {
 127     int i;
 128     PL_LOCK;
 129
 130     for( i = 0 ; i< p_playlist->i_sds ; i ++ )
 131     {
 132         if( !strcmp( psz_module, p_playlist->pp_sds[i]->psz_module ) )
 133         {
 134             PL_UNLOCK;
 135             return VLC_TRUE;
 136         }
 137     }
 138     PL_UNLOCK;
 139     return VLC_FALSE;
 140 }
 141
 142 static void RunSD( services_discovery_t *p_sd )
 143 {
 144     p_sd->pf_run( p_sd );
 145     return;
 146 }