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     vlc_value_t         val;
 103     playlist_t          *p_playlist;
 104     playlist_view_t     *p_view;
 105
 106     p_sd->pf_run = Run;
 107     p_sd->p_sys  = p_sys;
 108
 109     if( !( p_sys->p_ctx = hal_initialize( NULL, FALSE ) ) )
 110     {
 111         free( p_sys );
 112         msg_Err( p_sd, "hal not available" );
 113         return VLC_EGENERIC;
 114     }
 115
 116     /* Create our playlist node */
 117     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 118                                                 FIND_ANYWHERE );
 119     if( !p_playlist )
 120     {
 121         msg_Warn( p_sd, "unable to find playlist, cancelling HAL listening");
 122         return VLC_EGENERIC;
 123     }
 124
 125     p_view = playlist_ViewFind( p_playlist, VIEW_CATEGORY );
 126     p_sys->p_node = playlist_NodeCreate( p_playlist, VIEW_CATEGORY,
 127                                          _("Devices"), p_view->p_root );
 128
 129     p_sys->p_node->i_flags |= PLAYLIST_RO_FLAG;
 130     val.b_bool = VLC_TRUE;
 131     var_Set( p_playlist, "intf-change", val );
 132
 133     vlc_object_release( p_playlist );
 134
 135     return VLC_SUCCESS;
 136 }
 137
 138 /*****************************************************************************
 139  * Close:
 140  *****************************************************************************/
 141 static void Close( vlc_object_t *p_this )
 142 {
 143     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
 144     services_discovery_sys_t *p_sys  = p_sd->p_sys;
 145     playlist_t *p_playlist =  (playlist_t *) vlc_object_find( p_sd,
 146                                  VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 147     if( p_playlist )
 148     {
 149         playlist_NodeDelete( p_playlist, p_sys->p_node, VLC_TRUE, VLC_TRUE );
 150         vlc_object_release( p_playlist );
 151     }
 152     free( p_sys );
 153 }
 154
 155 static void AddDvd( services_discovery_t *p_sd, char *psz_device )
 156 {
 157     char *psz_name;
 158     char *psz_uri;
 159     char *psz_blockdevice;
 160     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 161     playlist_t          *p_playlist;
 162     playlist_item_t     *p_item;
 163     psz_name = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 164                                                psz_device, "volume.label" );
 165     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 166                                                  psz_device, "block.device" );
 167     asprintf( &psz_uri, "dvd://%s", psz_blockdevice );
 168     /* Create the playlist item here */
 169     p_item = playlist_ItemNew( p_sd, psz_uri,
 170                                psz_name );
 171     free( psz_uri );
 172     hal_free_string( psz_device );
 173     if( !p_item )
 174     {
 175         return;
 176     }
 177     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 178     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 179                                                 FIND_ANYWHERE );
 180     if( !p_playlist )
 181     {
 182         msg_Err( p_sd, "playlist not found" );
 183         return;
 184     }
 185
 186     playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_sys->p_node,
 187                           PLAYLIST_APPEND, PLAYLIST_END );
 188
 189     vlc_object_release( p_playlist );
 190 }
 191
 192 static void AddCdda( services_discovery_t *p_sd, char *psz_device )
 193 {
 194     char *psz_name = "Audio CD";
 195     char *psz_uri;
 196     char *psz_blockdevice;
 197     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 198     playlist_t          *p_playlist;
 199     playlist_item_t     *p_item;
 200     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 201                                                  psz_device, "block.device" );
 202     asprintf( &psz_uri, "cdda://%s", psz_blockdevice );
 203     /* Create the playlist item here */
 204     p_item = playlist_ItemNew( p_sd, psz_uri,
 205                                psz_name );
 206     free( psz_uri );
 207     hal_free_string( psz_device );
 208     if( !p_item )
 209     {
 210         return;
 211     }
 212     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 213     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 214                                                 FIND_ANYWHERE );
 215     if( !p_playlist )
 216     {
 217         msg_Err( p_sd, "playlist not found" );
 218         return;
 219     }
 220
 221     playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_sys->p_node,
 222                           PLAYLIST_APPEND, PLAYLIST_END );
 223
 224     vlc_object_release( p_playlist );
 225
 226 }
 227
 228 static void ParseDevice( services_discovery_t *p_sd, char *psz_device )
 229 {
 230     char *psz_disc_type;
 231     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 232     if( hal_device_property_exists( p_sys->p_ctx, psz_device,
 233                                     "volume.disc.type" ) )
 234     {
 235         psz_disc_type = hal_device_get_property_string( p_sys->p_ctx,
 236                                                         psz_device,
 237                                                         "volume.disc.type" );
 238         if( !strcmp( psz_disc_type, "dvd_rom" ) )
 239         {
 240             AddDvd( p_sd, psz_device );
 241         }
 242         else if( !strcmp( psz_disc_type, "cd_rom" ) )
 243         {
 244             if( hal_device_get_property_bool( p_sys->p_ctx, psz_device, "volume.disc.has_audio" ) )
 245             {
 246                 AddCdda( p_sd, psz_device );
 247             }
 248         }
 249         hal_free_string( psz_disc_type );
 250     }
 251 }
 252
 253 /*****************************************************************************
 254  * Run: main HAL thread
 255  *****************************************************************************/
 256 static void Run( services_discovery_t *p_sd )
 257 {
 258     int i, i_devices;
 259     char **devices;
 260     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 261
 262     /* parse existing devices first */
 263     if( ( devices = hal_get_all_devices( p_sys->p_ctx, &i_devices ) ) )
 264     {
 265         for( i = 0; i < i_devices; i++ )
 266         {
 267             ParseDevice( p_sd, devices[ i ] );
 268         }
 269     }
 270
 271     while( !p_sd->b_die )
 272     {
 273         msleep( 100000 );
 274     }
 275 }