git.sesse.net Git - vlc/blob - modules/services_discovery/shout.c

   1 /*****************************************************************************
   2  * shout.c:  Shoutcast services discovery module
   3  *****************************************************************************
   4  * Copyright (C) 2005 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
   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
  24 /*****************************************************************************
  25  * Includes
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28
  29 #include <vlc/vlc.h>
  30 #include <vlc/intf.h>
  31
  32 #include <vlc/input.h>
  33
  34 #include "network.h"
  35
  36 #include <errno.h>                                                 /* ENOMEM */
  37
  38 #ifdef HAVE_UNISTD_H
  39 #    include <unistd.h>
  40 #endif
  41 #ifdef HAVE_SYS_TIME_H
  42 #    include <sys/time.h>
  43 #endif
  44
  45 /************************************************************************
  46  * Macros and definitions
  47  ************************************************************************/
  48
  49 #define MAX_LINE_LENGTH 256
  50
  51
  52 /*****************************************************************************
  53  * Module descriptor
  54  *****************************************************************************/
  55
  56 /* Callbacks */
  57     static int  Open ( vlc_object_t * );
  58     static void Close( vlc_object_t * );
  59
  60 #define LIMIT_TEXT N_("Maximum number of shoutcast servers to be listed")
  61 #define LIMIT_LONGTEXT LIMIT_TEXT
  62
  63 vlc_module_begin();
  64     set_description( _("Shoutcast radio listings") );
  65     set_category( CAT_PLAYLIST );
  66     set_subcategory( SUBCAT_PLAYLIST_SD );
  67
  68     add_integer( "shoutcast-limit", 1000, NULL, LIMIT_TEXT,
  69                     LIMIT_LONGTEXT, VLC_TRUE );
  70
  71     set_capability( "services_discovery", 0 );
  72     set_callbacks( Open, Close );
  73
  74 vlc_module_end();
  75
  76
  77 /*****************************************************************************
  78  * Local structures
  79  *****************************************************************************/
  80
  81 struct services_discovery_sys_t
  82 {
  83     /* playlist node */
  84     playlist_item_t *p_node;
  85     input_thread_t *p_input;
  86
  87 };
  88
  89 /*****************************************************************************
  90  * Local prototypes
  91  *****************************************************************************/
  92
  93 /* Main functions */
  94     static void Run    ( services_discovery_t *p_intf );
  95
  96 /*****************************************************************************
  97  * Open: initialize and create stuff
  98  *****************************************************************************/
  99 static int Open( vlc_object_t *p_this )
 100 {
 101     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
 102     services_discovery_sys_t *p_sys  = malloc(
 103                                     sizeof( services_discovery_sys_t ) );
 104
 105     vlc_value_t         val;
 106     playlist_t          *p_playlist;
 107     playlist_view_t     *p_view;
 108     playlist_item_t     *p_item;
 109
 110     int i_limit;
 111     char *psz_shoutcast_url;
 112     char *psz_shoutcast_title;
 113
 114     p_sd->pf_run = Run;
 115     p_sd->p_sys  = p_sys;
 116
 117     /* Create our playlist node */
 118     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 119                                                 FIND_ANYWHERE );
 120     if( !p_playlist )
 121     {
 122         msg_Warn( p_sd, "unable to find playlist, cancelling");
 123         return VLC_EGENERIC;
 124     }
 125
 126     i_limit = config_GetInt( p_this->p_libvlc, "shoutcast-limit" );
 127     #define SHOUTCAST_BASE_URL "http/shout-b4s://shoutcast.com/sbin/xmllister.phtml?service=vlc&no_compress=1&limit="
 128     psz_shoutcast_url = (char *)malloc( strlen( SHOUTCAST_BASE_URL ) + 20 );
 129     psz_shoutcast_title = (char *)malloc( 6 + 20 );
 130
 131     sprintf( psz_shoutcast_url, SHOUTCAST_BASE_URL "%d", i_limit );
 132     sprintf( psz_shoutcast_title, "Top %d", i_limit );
 133
 134     p_view = playlist_ViewFind( p_playlist, VIEW_CATEGORY );
 135     p_sys->p_node = playlist_NodeCreate( p_playlist, VIEW_CATEGORY,
 136                                          _("Shoutcast"), p_view->p_root );
 137     p_item = playlist_ItemNew( p_playlist, psz_shoutcast_url,
 138                                      psz_shoutcast_title );
 139     free( psz_shoutcast_url );
 140     free( psz_shoutcast_title );
 141     playlist_NodeAddItem( p_playlist, p_item,
 142                           p_sys->p_node->pp_parents[0]->i_view,
 143                           p_sys->p_node, PLAYLIST_APPEND,
 144                           PLAYLIST_END );
 145
 146     p_sys->p_input = input_CreateThread( p_playlist, &p_item->input );
 147     /* We need to declare the parents of the node as the same of the
 148      * parent's ones */
 149     playlist_CopyParents( p_sys->p_node, p_item );
 150
 151     p_sys->p_node->i_flags |= PLAYLIST_RO_FLAG;
 152     val.b_bool = VLC_TRUE;
 153     var_Set( p_playlist, "intf-change", val );
 154
 155     vlc_object_release( p_playlist );
 156
 157     return VLC_SUCCESS;
 158 }
 159
 160 /*****************************************************************************
 161  * Close:
 162  *****************************************************************************/
 163 static void Close( vlc_object_t *p_this )
 164 {
 165     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
 166     services_discovery_sys_t *p_sys  = p_sd->p_sys;
 167     playlist_t *p_playlist =  (playlist_t *) vlc_object_find( p_sd,
 168                                  VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 169     if( p_playlist )
 170     {
 171         playlist_NodeDelete( p_playlist, p_sys->p_node, VLC_TRUE, VLC_TRUE );
 172         vlc_object_release( p_playlist );
 173     }
 174     if( p_sd->p_sys->p_input )
 175     {
 176         input_StopThread( p_sd->p_sys->p_input );
 177         input_DestroyThread( p_sd->p_sys->p_input );
 178         vlc_object_detach( p_sd->p_sys->p_input );
 179         vlc_object_destroy( p_sd->p_sys->p_input );
 180         p_sd->p_sys->p_input = NULL;
 181     }
 182     free( p_sys );
 183 }
 184
 185 /*****************************************************************************
 186  * Run: main thread
 187  *****************************************************************************/
 188 static void Run( services_discovery_t *p_sd )
 189 {
 190     while( !p_sd->b_die )
 191     {
 192         if( p_sd->p_sys->p_input &&
 193             ( p_sd->p_sys->p_input->b_eof || p_sd->p_sys->p_input->b_error ) )
 194         {
 195             input_StopThread( p_sd->p_sys->p_input );
 196             input_DestroyThread( p_sd->p_sys->p_input );
 197             vlc_object_detach( p_sd->p_sys->p_input );
 198             vlc_object_destroy( p_sd->p_sys->p_input );
 199             p_sd->p_sys->p_input = NULL;
 200         }
 201         msleep( 100000 );
 202     }
 203 }