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

   1 /*****************************************************************************
   2  * hal.c :  HAL interface module
   3  *****************************************************************************
   4  * Copyright (C) 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
  24 #include <vlc/vlc.h>
  25 #include <vlc/intf.h>
  26
  27 #include <vlc/input.h>
  28
  29 #include "network.h"
  30
  31 #include <errno.h>                                                 /* ENOMEM */
  32
  33 #ifdef HAVE_UNISTD_H
  34 #    include <unistd.h>
  35 #endif
  36 #ifdef HAVE_SYS_TIME_H
  37 #    include <sys/time.h>
  38 #endif
  39
  40 #include <hal/libhal.h>
  41
  42 #define MAX_LINE_LENGTH 256
  43
  44 /*****************************************************************************
  45  * Local prototypes
  46  *****************************************************************************/
  47 struct services_discovery_sys_t
  48 {
  49     LibHalContext *p_ctx;
  50     playlist_item_t *p_node_cat;
  51     playlist_item_t *p_node_one;
  52 };
  53 static void AddItem( services_discovery_t *p_sd, input_item_t * p_input );
  54 static void Run    ( services_discovery_t *p_intf );
  55
  56 static int  Open ( vlc_object_t * );
  57 static void Close( vlc_object_t * );
  58
  59 /*****************************************************************************
  60  * Module descriptor
  61  *****************************************************************************/
  62 vlc_module_begin();
  63     set_description( _("HAL devices 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  * Open: initialize and create stuff
  75  *****************************************************************************/
  76 static int Open( vlc_object_t *p_this )
  77 {
  78     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
  79     services_discovery_sys_t *p_sys  = malloc(
  80                                     sizeof( services_discovery_sys_t ) );
  81
  82     vlc_value_t         val;
  83     playlist_t          *p_playlist;
  84
  85     DBusError           dbus_error;
  86     DBusConnection      *p_connection;
  87
  88     p_sd->pf_run = Run;
  89     p_sd->p_sys  = p_sys;
  90
  91     dbus_error_init( &dbus_error );
  92
  93 #ifdef HAVE_HAL_1
  94     p_sys->p_ctx = libhal_ctx_new();
  95     if( !p_sys->p_ctx )
  96     {
  97         msg_Err( p_sd, "unable to create HAL context") ;
  98         free( p_sys );
  99         return VLC_EGENERIC;
 100     }
 101     p_connection = dbus_bus_get( DBUS_BUS_SYSTEM, &dbus_error );
 102     if( dbus_error_is_set( &dbus_error ) )
 103     {
 104         msg_Err( p_sd, "unable to connect to DBUS: %s", dbus_error.message );
 105         dbus_error_free( &dbus_error );
 106         free( p_sys );
 107         return VLC_EGENERIC;
 108     }
 109     libhal_ctx_set_dbus_connection( p_sys->p_ctx, p_connection );
 110     if( !libhal_ctx_init( p_sys->p_ctx, &dbus_error ) )
 111 #else
 112     if( !(p_sys->p_ctx = hal_initialize( NULL, FALSE ) ) )
 113 #endif
 114     {
 115         msg_Err( p_sd, "hal not available : %s", dbus_error.message );
 116         dbus_error_free( &dbus_error );
 117         free( p_sys );
 118         return VLC_EGENERIC;
 119     }
 120
 121     /* Create our playlist node */
 122     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 123                                                 FIND_ANYWHERE );
 124     if( !p_playlist )
 125     {
 126         msg_Warn( p_sd, "unable to find playlist, cancelling HAL listening");
 127         return VLC_EGENERIC;
 128     }
 129
 130     p_sys->p_node_cat = playlist_NodeCreate( p_playlist, _("Devices"),
 131                                          p_playlist->p_root_category );
 132     p_sys->p_node_cat->i_flags |= PLAYLIST_RO_FLAG;
 133     p_sys->p_node_one = playlist_NodeCreate( p_playlist, _("Devices"),
 134                                          p_playlist->p_root_onelevel );
 135     p_sys->p_node_one->i_flags |= PLAYLIST_RO_FLAG;
 136
 137     val.b_bool = VLC_TRUE;
 138     var_Set( p_playlist, "intf-change", val );
 139
 140     vlc_object_release( p_playlist );
 141
 142     return VLC_SUCCESS;
 143 }
 144
 145 /*****************************************************************************
 146  * Close:
 147  *****************************************************************************/
 148 static void Close( vlc_object_t *p_this )
 149 {
 150     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
 151     services_discovery_sys_t *p_sys  = p_sd->p_sys;
 152     playlist_t *p_playlist =  (playlist_t *) vlc_object_find( p_sd,
 153                                  VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 154     if( p_playlist )
 155     {
 156         playlist_NodeDelete( p_playlist, p_sys->p_node_cat, VLC_TRUE,VLC_TRUE );
 157         playlist_NodeDelete( p_playlist, p_sys->p_node_one, VLC_TRUE,VLC_TRUE );
 158         vlc_object_release( p_playlist );
 159     }
 160     free( p_sys );
 161 }
 162
 163 static void AddDvd( services_discovery_t *p_sd, char *psz_device )
 164 {
 165     char *psz_name;
 166     char *psz_uri;
 167     char *psz_blockdevice;
 168     input_item_t        *p_input;
 169 #ifdef HAVE_HAL_1
 170     psz_name = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 171                                         psz_device, "volume.label", NULL );
 172     psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 173                                         psz_device, "block.device", NULL );
 174 #else
 175     psz_name = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 176                                                psz_device, "volume.label" );
 177     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 178                                                  psz_device, "block.device" );
 179 #endif
 180     asprintf( &psz_uri, "dvd://%s", psz_blockdevice );
 181     /* Create the playlist item here */
 182     p_input = input_ItemNew( p_sd, psz_uri, psz_name );
 183     free( psz_uri );
 184 #ifdef HAVE_HAL_1
 185     libhal_free_string( psz_device );
 186 #else
 187     hal_free_string( psz_device );
 188 #endif
 189     if( !p_input )
 190     {
 191         return;
 192     }
 193     AddItem( p_sd, p_input );
 194 }
 195
 196 static void AddItem( services_discovery_t *p_sd, input_item_t * p_input )
 197 {
 198     playlist_item_t *p_item;
 199     playlist_t *p_playlist = (playlist_t *)vlc_object_find( p_sd,
 200                                         VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 201     if( !p_playlist )
 202     {
 203         msg_Err( p_sd, "playlist not found" );
 204         return;
 205     }
 206     p_item = playlist_NodeAddInput( p_playlist, p_input,p_sd->p_sys->p_node_cat,
 207                                     PLAYLIST_APPEND, PLAYLIST_END );
 208     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 209     p_item = playlist_NodeAddInput( p_playlist, p_input,p_sd->p_sys->p_node_one,
 210                                     PLAYLIST_APPEND, PLAYLIST_END );
 211     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 212
 213     vlc_object_release( p_playlist );
 214 }
 215
 216 static void AddCdda( services_discovery_t *p_sd, char *psz_device )
 217 {
 218     char *psz_name = "Audio CD";
 219     char *psz_uri;
 220     char *psz_blockdevice;
 221     input_item_t     *p_input;
 222 #ifdef HAVE_HAL_1
 223     psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 224                                             psz_device, "block.device", NULL );
 225 #else
 226     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 227                                                  psz_device, "block.device" );
 228 #endif
 229     asprintf( &psz_uri, "cdda://%s", psz_blockdevice );
 230     /* Create the playlist item here */
 231     p_input = input_ItemNew( p_sd, psz_uri, psz_name );
 232     free( psz_uri );
 233 #ifdef HAVE_HAL_1
 234     libhal_free_string( psz_device );
 235 #else
 236     hal_free_string( psz_device );
 237 #endif
 238     if( !p_input )
 239         return;
 240     AddItem( p_sd, p_input );
 241 }
 242
 243 static void ParseDevice( services_discovery_t *p_sd, char *psz_device )
 244 {
 245     char *psz_disc_type;
 246     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 247 #ifdef HAVE_HAL_1
 248     if( libhal_device_property_exists( p_sys->p_ctx, psz_device,
 249                                        "volume.disc.type", NULL ) )
 250     {
 251         psz_disc_type = libhal_device_get_property_string( p_sys->p_ctx,
 252                                                         psz_device,
 253                                                         "volume.disc.type",
 254                                                         NULL );
 255 #else
 256     if( hal_device_property_exists( p_sys->p_ctx, psz_device,
 257                                     "volume.disc.type" ) )
 258     {
 259         psz_disc_type = hal_device_get_property_string( p_sys->p_ctx,
 260                                                         psz_device,
 261                                                         "volume.disc.type" );
 262 #endif
 263         if( !strcmp( psz_disc_type, "dvd_rom" ) )
 264         {
 265             AddDvd( p_sd, psz_device );
 266         }
 267         else if( !strcmp( psz_disc_type, "cd_rom" ) )
 268         {
 269 #ifdef HAVE_HAL_1
 270             if( libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
 271                                          "volume.disc.has_audio" , NULL ) )
 272 #else
 273             if( hal_device_get_property_bool( p_sys->p_ctx, psz_device,
 274                                          "volume.disc.has_audio" ) )
 275 #endif
 276             {
 277                 AddCdda( p_sd, psz_device );
 278             }
 279         }
 280 #ifdef HAVE_HAL_1
 281         libhal_free_string( psz_disc_type );
 282 #else
 283         hal_free_string( psz_disc_type );
 284 #endif
 285     }
 286 }
 287
 288 /*****************************************************************************
 289  * Run: main HAL thread
 290  *****************************************************************************/
 291 static void Run( services_discovery_t *p_sd )
 292 {
 293     int i, i_devices;
 294     char **devices;
 295     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 296
 297     /* parse existing devices first */
 298 #ifdef HAVE_HAL_1
 299     if( ( devices = libhal_get_all_devices( p_sys->p_ctx, &i_devices, NULL ) ) )
 300 #else
 301     if( ( devices = hal_get_all_devices( p_sys->p_ctx, &i_devices ) ) )
 302 #endif
 303     {
 304         for( i = 0; i < i_devices; i++ )
 305         {
 306             ParseDevice( p_sd, devices[ i ] );
 307         }
 308     }
 309
 310     while( !p_sd->b_die )
 311     {
 312         msleep( 100000 );
 313     }
 314 }