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

   1 /*****************************************************************************
   2  * sap.c :  SAP interface module
   3  *****************************************************************************
   4  * Copyright (C) 2004 VideoLAN
   5  * $Id: sap.c 9217 2004-11-07 11:02:59Z courmisch $
   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
  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 #include <hal/libhal.h>
  46
  47 /************************************************************************
  48  * Macros and definitions
  49  ************************************************************************/
  50
  51 #define MAX_LINE_LENGTH 256
  52
  53
  54 /*****************************************************************************
  55  * Module descriptor
  56  *****************************************************************************/
  57
  58 /* Callbacks */
  59     static int  Open ( vlc_object_t * );
  60     static void Close( vlc_object_t * );
  61
  62 vlc_module_begin();
  63     set_description( _("HAL device detection") );
  64     set_category( CAT_PLAYLIST );
  65     set_subcategory( SUBCAT_PLAYLIST_SD );
  66
  67     set_capability( "services_discovery", 0 );
  68     set_callbacks( Open, Close );
  69
  70 vlc_module_end();
  71
  72
  73 /*****************************************************************************
  74  * Local structures
  75  *****************************************************************************/
  76
  77 struct services_discovery_sys_t
  78 {
  79     LibHalContext *p_ctx;
  80
  81     /* playlist node */
  82     playlist_item_t *p_node;
  83
  84 };
  85
  86 /*****************************************************************************
  87  * Local prototypes
  88  *****************************************************************************/
  89
  90 /* Main functions */
  91     static void Run    ( services_discovery_t *p_intf );
  92
  93 /*****************************************************************************
  94  * Open: initialize and create stuff
  95  *****************************************************************************/
  96 static int Open( vlc_object_t *p_this )
  97 {
  98     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
  99     services_discovery_sys_t *p_sys  = malloc(
 100                                     sizeof( services_discovery_sys_t ) );
 101
 102     playlist_t          *p_playlist;
 103     playlist_view_t     *p_view;
 104
 105     p_sd->pf_run = Run;
 106     p_sd->p_sys  = p_sys;
 107
 108     if( !( p_sys->p_ctx = hal_initialize( NULL, FALSE ) ) )
 109     {
 110         free( p_sys );
 111         msg_Err( p_sd, "hal not available" );
 112         return VLC_EGENERIC;
 113     }
 114
 115     /* Create our playlist node */
 116     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 117                                                 FIND_ANYWHERE );
 118     if( !p_playlist )
 119     {
 120         msg_Warn( p_sd, "unable to find playlist, cancelling HAL listening");
 121         return VLC_EGENERIC;
 122     }
 123
 124     p_view = playlist_ViewFind( p_playlist, VIEW_CATEGORY );
 125     p_sys->p_node = playlist_NodeCreate( p_playlist, VIEW_CATEGORY,
 126                                          _("Devices"), p_view->p_root );
 127     vlc_object_release( p_playlist );
 128
 129     return VLC_SUCCESS;
 130 }
 131
 132 /*****************************************************************************
 133  * Close:
 134  *****************************************************************************/
 135 static void Close( vlc_object_t *p_this )
 136 {
 137     services_discovery_t *p_sd = ( services_discovery_t* )p_sd;
 138     services_discovery_sys_t *p_sys  = malloc(
 139                                          sizeof( services_discovery_sys_t ) );
 140     free( p_sys );
 141 }
 142
 143 static void AddDvd( services_discovery_t *p_sd, char *psz_device )
 144 {
 145     char *psz_name;
 146     char *psz_uri;
 147     char *psz_blockdevice;
 148     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 149     playlist_t          *p_playlist;
 150     playlist_item_t     *p_item;
 151     psz_name = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 152                                                psz_device, "volume.label" );
 153     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 154                                                  psz_device, "block.device" );
 155     asprintf( &psz_uri, "dvd://%s", psz_blockdevice );
 156     /* Create the playlist item here */
 157     p_item = playlist_ItemNew( p_sd, psz_uri,
 158                                psz_name );
 159     free( psz_uri );
 160     hal_free_string( psz_device );
 161     if( !p_item )
 162     {
 163         return;
 164     }
 165     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 166     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 167                                                 FIND_ANYWHERE );
 168     if( !p_playlist )
 169     {
 170         msg_Err( p_sd, "playlist not found" );
 171         return;
 172     }
 173
 174     playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_sys->p_node,
 175                           PLAYLIST_APPEND, PLAYLIST_END );
 176
 177     vlc_object_release( p_playlist );
 178 }
 179
 180 static void AddCdda( services_discovery_t *p_sd, char *psz_device )
 181 {
 182     char *psz_name = "Audio CD";
 183     char *psz_uri;
 184     char *psz_blockdevice;
 185     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 186     playlist_t          *p_playlist;
 187     playlist_item_t     *p_item;
 188     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 189                                                  psz_device, "block.device" );
 190     asprintf( &psz_uri, "cdda://%s", psz_blockdevice );
 191     /* Create the playlist item here */
 192     p_item = playlist_ItemNew( p_sd, psz_uri,
 193                                psz_name );
 194     free( psz_uri );
 195     hal_free_string( psz_device );
 196     if( !p_item )
 197     {
 198         return;
 199     }
 200     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 201     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 202                                                 FIND_ANYWHERE );
 203     if( !p_playlist )
 204     {
 205         msg_Err( p_sd, "playlist not found" );
 206         return;
 207     }
 208
 209     playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_sys->p_node,
 210                           PLAYLIST_APPEND, PLAYLIST_END );
 211
 212     vlc_object_release( p_playlist );
 213
 214 }
 215
 216 static void ParseDevice( services_discovery_t *p_sd, char *psz_device )
 217 {
 218     char *psz_disc_type;
 219     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 220     if( hal_device_property_exists( p_sys->p_ctx, psz_device,
 221                                     "volume.disc.type" ) )
 222     {
 223         psz_disc_type = hal_device_get_property_string( p_sys->p_ctx,
 224                                                         psz_device,
 225                                                         "volume.disc.type" );
 226         if( !strcmp( psz_disc_type, "dvd_rom" ) )
 227         {
 228             AddDvd( p_sd, psz_device );
 229         }
 230         else if( !strcmp( psz_disc_type, "cd_rom" ) )
 231         {
 232             if( hal_device_get_property_bool( p_sys->p_ctx, psz_device, "volume.disc.has_audio" ) )
 233             {
 234                 AddCdda( p_sd, psz_device );
 235             }
 236         }
 237         hal_free_string( psz_disc_type );
 238     }
 239 }
 240
 241 /*****************************************************************************
 242  * Run: main HAL thread
 243  *****************************************************************************/
 244 static void Run( services_discovery_t *p_sd )
 245 {
 246     int i, i_devices;
 247     char **devices;
 248     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 249
 250     /* parse existing devices first */
 251     if( ( devices = hal_get_all_devices( p_sys->p_ctx, &i_devices ) ) )
 252     {
 253         for( i = 0; i < i_devices; i++ )
 254         {
 255             ParseDevice( p_sd, devices[ i ] );
 256         }
 257     }
 258
 259     while( !p_sd->b_die )
 260     {
 261         msleep( 100000 );
 262     }
 263 }