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