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_NodesPairCreate( p_playlist, _("Devices"),
 131                               &p_sys->p_node_cat, &p_sys->p_node_one,
 132                               VLC_TRUE );
 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_cat, VLC_TRUE,VLC_TRUE );
 150         playlist_NodeDelete( p_playlist, p_sys->p_node_one, VLC_TRUE,VLC_TRUE );
 151         vlc_object_release( p_playlist );
 152     }
 153     free( p_sys );
 154 }
 155
 156 static void AddDvd( services_discovery_t *p_sd, char *psz_device )
 157 {
 158     char *psz_name;
 159     char *psz_uri;
 160     char *psz_blockdevice;
 161     input_item_t        *p_input;
 162 #ifdef HAVE_HAL_1
 163     psz_name = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 164                                         psz_device, "volume.label", NULL );
 165     psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 166                                         psz_device, "block.device", NULL );
 167 #else
 168     psz_name = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 169                                                psz_device, "volume.label" );
 170     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 171                                                  psz_device, "block.device" );
 172 #endif
 173     asprintf( &psz_uri, "dvd://%s", psz_blockdevice );
 174     /* Create the playlist item here */
 175     p_input = input_ItemNew( p_sd, psz_uri, psz_name );
 176     free( psz_uri );
 177 #ifdef HAVE_HAL_1
 178     libhal_free_string( psz_device );
 179 #else
 180     hal_free_string( psz_device );
 181 #endif
 182     if( !p_input )
 183     {
 184         return;
 185     }
 186     AddItem( p_sd, p_input );
 187 }
 188
 189 static void AddItem( services_discovery_t *p_sd, input_item_t * p_input )
 190 {
 191     playlist_item_t *p_item;
 192     playlist_t *p_playlist = (playlist_t *)vlc_object_find( p_sd,
 193                                         VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 194     if( !p_playlist )
 195     {
 196         msg_Err( p_sd, "playlist not found" );
 197         return;
 198     }
 199     p_item = playlist_NodeAddInput( p_playlist, p_input,p_sd->p_sys->p_node_cat,
 200                                     PLAYLIST_APPEND, PLAYLIST_END );
 201     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 202     p_item = playlist_NodeAddInput( p_playlist, p_input,p_sd->p_sys->p_node_one,
 203                                     PLAYLIST_APPEND, PLAYLIST_END );
 204     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 205
 206     vlc_object_release( p_playlist );
 207 }
 208
 209 static void AddCdda( services_discovery_t *p_sd, char *psz_device )
 210 {
 211     char *psz_name = "Audio CD";
 212     char *psz_uri;
 213     char *psz_blockdevice;
 214     input_item_t     *p_input;
 215 #ifdef HAVE_HAL_1
 216     psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 217                                             psz_device, "block.device", NULL );
 218 #else
 219     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 220                                                  psz_device, "block.device" );
 221 #endif
 222     asprintf( &psz_uri, "cdda://%s", psz_blockdevice );
 223     /* Create the playlist item here */
 224     p_input = input_ItemNew( p_sd, psz_uri, psz_name );
 225     free( psz_uri );
 226 #ifdef HAVE_HAL_1
 227     libhal_free_string( psz_device );
 228 #else
 229     hal_free_string( psz_device );
 230 #endif
 231     if( !p_input )
 232         return;
 233     AddItem( p_sd, p_input );
 234 }
 235
 236 static void ParseDevice( services_discovery_t *p_sd, char *psz_device )
 237 {
 238     char *psz_disc_type;
 239     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 240 #ifdef HAVE_HAL_1
 241     if( libhal_device_property_exists( p_sys->p_ctx, psz_device,
 242                                        "volume.disc.type", NULL ) )
 243     {
 244         psz_disc_type = libhal_device_get_property_string( p_sys->p_ctx,
 245                                                         psz_device,
 246                                                         "volume.disc.type",
 247                                                         NULL );
 248 #else
 249     if( hal_device_property_exists( p_sys->p_ctx, psz_device,
 250                                     "volume.disc.type" ) )
 251     {
 252         psz_disc_type = hal_device_get_property_string( p_sys->p_ctx,
 253                                                         psz_device,
 254                                                         "volume.disc.type" );
 255 #endif
 256         if( !strcmp( psz_disc_type, "dvd_rom" ) )
 257         {
 258             AddDvd( p_sd, psz_device );
 259         }
 260         else if( !strcmp( psz_disc_type, "cd_rom" ) )
 261         {
 262 #ifdef HAVE_HAL_1
 263             if( libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
 264                                          "volume.disc.has_audio" , NULL ) )
 265 #else
 266             if( hal_device_get_property_bool( p_sys->p_ctx, psz_device,
 267                                          "volume.disc.has_audio" ) )
 268 #endif
 269             {
 270                 AddCdda( p_sd, psz_device );
 271             }
 272         }
 273 #ifdef HAVE_HAL_1
 274         libhal_free_string( psz_disc_type );
 275 #else
 276         hal_free_string( psz_disc_type );
 277 #endif
 278     }
 279 }
 280
 281 /*****************************************************************************
 282  * Run: main HAL thread
 283  *****************************************************************************/
 284 static void Run( services_discovery_t *p_sd )
 285 {
 286     int i, i_devices;
 287     char **devices;
 288     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 289
 290     /* parse existing devices first */
 291 #ifdef HAVE_HAL_1
 292     if( ( devices = libhal_get_all_devices( p_sys->p_ctx, &i_devices, NULL ) ) )
 293 #else
 294     if( ( devices = hal_get_all_devices( p_sys->p_ctx, &i_devices ) ) )
 295 #endif
 296     {
 297         for( i = 0; i < i_devices; i++ )
 298         {
 299             ParseDevice( p_sd, devices[ i ] );
 300         }
 301     }
 302
 303     while( !p_sd->b_die )
 304     {
 305         msleep( 100000 );
 306     }
 307 }