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     playlist_NodesCreateForSD( p_playlist, _("Devices"),
 131                                &p_sys->p_node_cat, &p_sys->p_node_one );
 132     vlc_object_release( p_playlist );
 133
 134     return VLC_SUCCESS;
 135 }
 136
 137 /*****************************************************************************
 138  * Close:
 139  *****************************************************************************/
 140 static void Close( vlc_object_t *p_this )
 141 {
 142     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
 143     services_discovery_sys_t *p_sys  = p_sd->p_sys;
 144     playlist_t *p_playlist =  (playlist_t *) vlc_object_find( p_sd,
 145                                  VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 146     if( p_playlist )
 147     {
 148         playlist_NodeDelete( p_playlist, p_sys->p_node_cat, VLC_TRUE,VLC_TRUE );
 149         playlist_NodeDelete( p_playlist, p_sys->p_node_one, 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     input_item_t        *p_input;
 161 #ifdef HAVE_HAL_1
 162     psz_name = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 163                                         psz_device, "volume.label", NULL );
 164     psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 165                                         psz_device, "block.device", NULL );
 166 #else
 167     psz_name = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 168                                                psz_device, "volume.label" );
 169     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 170                                                  psz_device, "block.device" );
 171 #endif
 172     asprintf( &psz_uri, "dvd://%s", psz_blockdevice );
 173     /* Create the playlist item here */
 174     p_input = input_ItemNew( p_sd, psz_uri, psz_name );
 175     free( psz_uri );
 176 #ifdef HAVE_HAL_1
 177     libhal_free_string( psz_device );
 178 #else
 179     hal_free_string( psz_device );
 180 #endif
 181     if( !p_input )
 182     {
 183         return;
 184     }
 185     AddItem( p_sd, p_input );
 186 }
 187
 188 static void AddItem( services_discovery_t *p_sd, input_item_t * p_input )
 189 {
 190     playlist_item_t *p_item;
 191     playlist_t *p_playlist = (playlist_t *)vlc_object_find( p_sd,
 192                                         VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 193     if( !p_playlist )
 194     {
 195         msg_Err( p_sd, "playlist not found" );
 196         return;
 197     }
 198     p_item = playlist_NodeAddInput( p_playlist, p_input,p_sd->p_sys->p_node_cat,
 199                                     PLAYLIST_APPEND, PLAYLIST_END );
 200     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 201     p_item = playlist_NodeAddInput( p_playlist, p_input,p_sd->p_sys->p_node_one,
 202                                     PLAYLIST_APPEND, PLAYLIST_END );
 203     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 204
 205     vlc_object_release( p_playlist );
 206 }
 207
 208 static void AddCdda( services_discovery_t *p_sd, char *psz_device )
 209 {
 210     char *psz_name = "Audio CD";
 211     char *psz_uri;
 212     char *psz_blockdevice;
 213     input_item_t     *p_input;
 214 #ifdef HAVE_HAL_1
 215     psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 216                                             psz_device, "block.device", NULL );
 217 #else
 218     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 219                                                  psz_device, "block.device" );
 220 #endif
 221     asprintf( &psz_uri, "cdda://%s", psz_blockdevice );
 222     /* Create the playlist item here */
 223     p_input = input_ItemNew( p_sd, psz_uri, psz_name );
 224     free( psz_uri );
 225 #ifdef HAVE_HAL_1
 226     libhal_free_string( psz_device );
 227 #else
 228     hal_free_string( psz_device );
 229 #endif
 230     if( !p_input )
 231         return;
 232     AddItem( p_sd, p_input );
 233 }
 234
 235 static void ParseDevice( services_discovery_t *p_sd, char *psz_device )
 236 {
 237     char *psz_disc_type;
 238     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 239 #ifdef HAVE_HAL_1
 240     if( libhal_device_property_exists( p_sys->p_ctx, psz_device,
 241                                        "volume.disc.type", NULL ) )
 242     {
 243         psz_disc_type = libhal_device_get_property_string( p_sys->p_ctx,
 244                                                         psz_device,
 245                                                         "volume.disc.type",
 246                                                         NULL );
 247 #else
 248     if( hal_device_property_exists( p_sys->p_ctx, psz_device,
 249                                     "volume.disc.type" ) )
 250     {
 251         psz_disc_type = hal_device_get_property_string( p_sys->p_ctx,
 252                                                         psz_device,
 253                                                         "volume.disc.type" );
 254 #endif
 255         if( !strcmp( psz_disc_type, "dvd_rom" ) )
 256         {
 257             AddDvd( p_sd, psz_device );
 258         }
 259         else if( !strcmp( psz_disc_type, "cd_rom" ) )
 260         {
 261 #ifdef HAVE_HAL_1
 262             if( libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
 263                                          "volume.disc.has_audio" , NULL ) )
 264 #else
 265             if( hal_device_get_property_bool( p_sys->p_ctx, psz_device,
 266                                          "volume.disc.has_audio" ) )
 267 #endif
 268             {
 269                 AddCdda( p_sd, psz_device );
 270             }
 271         }
 272 #ifdef HAVE_HAL_1
 273         libhal_free_string( psz_disc_type );
 274 #else
 275         hal_free_string( psz_disc_type );
 276 #endif
 277     }
 278 }
 279
 280 /*****************************************************************************
 281  * Run: main HAL thread
 282  *****************************************************************************/
 283 static void Run( services_discovery_t *p_sd )
 284 {
 285     int i, i_devices;
 286     char **devices;
 287     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 288
 289     /* parse existing devices first */
 290 #ifdef HAVE_HAL_1
 291     if( ( devices = libhal_get_all_devices( p_sys->p_ctx, &i_devices, NULL ) ) )
 292 #else
 293     if( ( devices = hal_get_all_devices( p_sys->p_ctx, &i_devices ) ) )
 294 #endif
 295     {
 296         for( i = 0; i < i_devices; i++ )
 297         {
 298             ParseDevice( p_sd, devices[ i ] );
 299         }
 300     }
 301
 302     while( !p_sd->b_die )
 303     {
 304         msleep( 100000 );
 305     }
 306 }