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

   1 /*****************************************************************************
   2  * sap.c :  SAP 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 /*****************************************************************************
  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     DBusError           dbus_error;
 107     DBusConnection      *p_connection;
 108
 109     p_sd->pf_run = Run;
 110     p_sd->p_sys  = p_sys;
 111
 112     dbus_error_init( &dbus_error );
 113
 114 #ifdef HAVE_HAL_1
 115     p_sys->p_ctx = libhal_ctx_new();
 116     if( !p_sys->p_ctx )
 117     {
 118         msg_Err( p_sd, "Unable to create HAL context") ;
 119         free( p_sys );
 120         return VLC_EGENERIC;
 121     }
 122     p_connection = dbus_bus_get( DBUS_BUS_SYSTEM, &dbus_error );
 123     if( dbus_error_is_set( &dbus_error ) )
 124     {
 125         msg_Err( p_sd, "Unable to connect to DBUS: %s", dbus_error.message );
 126         dbus_error_free( &dbus_error );
 127         free( p_sys );
 128         return VLC_EGENERIC;
 129     }
 130     libhal_ctx_set_dbus_connection( p_sys->p_ctx, p_connection );
 131     if( !libhal_ctx_init( p_sys->p_ctx, &dbus_error ) )
 132 #else
 133     if( !(p_sys->p_ctx = hal_initialize( NULL, FALSE ) ) )
 134 #endif
 135     {
 136         msg_Err( p_sd, "hal not available : %s", dbus_error.message );
 137         dbus_error_free( &dbus_error );
 138         free( p_sys );
 139         return VLC_EGENERIC;
 140     }
 141
 142     /* Create our playlist node */
 143     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 144                                                 FIND_ANYWHERE );
 145     if( !p_playlist )
 146     {
 147         msg_Warn( p_sd, "unable to find playlist, cancelling HAL listening");
 148         return VLC_EGENERIC;
 149     }
 150
 151     p_view = playlist_ViewFind( p_playlist, VIEW_CATEGORY );
 152     p_sys->p_node = playlist_NodeCreate( p_playlist, VIEW_CATEGORY,
 153                                          _("Devices"), p_view->p_root );
 154
 155     p_sys->p_node->i_flags |= PLAYLIST_RO_FLAG;
 156     val.b_bool = VLC_TRUE;
 157     var_Set( p_playlist, "intf-change", val );
 158
 159     vlc_object_release( p_playlist );
 160
 161     return VLC_SUCCESS;
 162 }
 163
 164 /*****************************************************************************
 165  * Close:
 166  *****************************************************************************/
 167 static void Close( vlc_object_t *p_this )
 168 {
 169     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
 170     services_discovery_sys_t *p_sys  = p_sd->p_sys;
 171     playlist_t *p_playlist =  (playlist_t *) vlc_object_find( p_sd,
 172                                  VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 173     if( p_playlist )
 174     {
 175         playlist_NodeDelete( p_playlist, p_sys->p_node, VLC_TRUE, VLC_TRUE );
 176         vlc_object_release( p_playlist );
 177     }
 178     free( p_sys );
 179 }
 180
 181 static void AddDvd( services_discovery_t *p_sd, char *psz_device )
 182 {
 183     char *psz_name;
 184     char *psz_uri;
 185     char *psz_blockdevice;
 186     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 187     playlist_t          *p_playlist;
 188     playlist_item_t     *p_item;
 189 #ifdef HAVE_HAL_1
 190     psz_name = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 191                                         psz_device, "volume.label", NULL );
 192     psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 193                                         psz_device, "block.device", NULL );
 194 #else
 195     psz_name = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 196                                                psz_device, "volume.label" );
 197     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 198                                                  psz_device, "block.device" );
 199 #endif
 200     asprintf( &psz_uri, "dvd://%s", psz_blockdevice );
 201     /* Create the playlist item here */
 202     p_item = playlist_ItemNew( p_sd, psz_uri,
 203                                psz_name );
 204     free( psz_uri );
 205 #ifdef HAVE_HAL_1
 206     libhal_free_string( psz_device );
 207 #else
 208     hal_free_string( psz_device );
 209 #endif
 210     if( !p_item )
 211     {
 212         return;
 213     }
 214     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 215     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 216                                                 FIND_ANYWHERE );
 217     if( !p_playlist )
 218     {
 219         msg_Err( p_sd, "playlist not found" );
 220         return;
 221     }
 222
 223     playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_sys->p_node,
 224                           PLAYLIST_APPEND, PLAYLIST_END );
 225
 226     vlc_object_release( p_playlist );
 227 }
 228
 229 static void AddCdda( services_discovery_t *p_sd, char *psz_device )
 230 {
 231     char *psz_name = "Audio CD";
 232     char *psz_uri;
 233     char *psz_blockdevice;
 234     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 235     playlist_t          *p_playlist;
 236     playlist_item_t     *p_item;
 237 #ifdef HAVE_HAL_1
 238     psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
 239                                             psz_device, "block.device", NULL );
 240 #else
 241     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
 242                                                  psz_device, "block.device" );
 243 #endif
 244     asprintf( &psz_uri, "cdda://%s", psz_blockdevice );
 245     /* Create the playlist item here */
 246     p_item = playlist_ItemNew( p_sd, psz_uri,
 247                                psz_name );
 248     free( psz_uri );
 249 #ifdef HAVE_HAL_1
 250     libhal_free_string( psz_device );
 251 #else
 252     hal_free_string( psz_device );
 253 #endif
 254     if( !p_item )
 255     {
 256         return;
 257     }
 258     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
 259     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
 260                                                 FIND_ANYWHERE );
 261     if( !p_playlist )
 262     {
 263         msg_Err( p_sd, "playlist not found" );
 264         return;
 265     }
 266
 267     playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_sys->p_node,
 268                           PLAYLIST_APPEND, PLAYLIST_END );
 269
 270     vlc_object_release( p_playlist );
 271
 272 }
 273
 274 static void ParseDevice( services_discovery_t *p_sd, char *psz_device )
 275 {
 276     char *psz_disc_type;
 277     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 278 #ifdef HAVE_HAL_1
 279     if( libhal_device_property_exists( p_sys->p_ctx, psz_device,
 280                                        "volume.disc.type", NULL ) )
 281     {
 282         psz_disc_type = libhal_device_get_property_string( p_sys->p_ctx,
 283                                                         psz_device,
 284                                                         "volume.disc.type",
 285                                                         NULL );
 286 #else
 287     if( hal_device_property_exists( p_sys->p_ctx, psz_device,
 288                                     "volume.disc.type" ) )
 289     {
 290         psz_disc_type = hal_device_get_property_string( p_sys->p_ctx,
 291                                                         psz_device,
 292                                                         "volume.disc.type" );
 293 #endif
 294         if( !strcmp( psz_disc_type, "dvd_rom" ) )
 295         {
 296             AddDvd( p_sd, psz_device );
 297         }
 298         else if( !strcmp( psz_disc_type, "cd_rom" ) )
 299         {
 300 #ifdef HAVE_HAL_1
 301             if( libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
 302                                          "volume.disc.has_audio" , NULL ) )
 303 #else
 304             if( hal_device_get_property_bool( p_sys->p_ctx, psz_device,
 305                                          "volume.disc.has_audio" ) )
 306 #endif
 307             {
 308                 AddCdda( p_sd, psz_device );
 309             }
 310         }
 311 #ifdef HAVE_HAL_1
 312         libhal_free_string( psz_disc_type );
 313 #else
 314         hal_free_string( psz_disc_type );
 315 #endif
 316     }
 317 }
 318
 319 /*****************************************************************************
 320  * Run: main HAL thread
 321  *****************************************************************************/
 322 static void Run( services_discovery_t *p_sd )
 323 {
 324     int i, i_devices;
 325     char **devices;
 326     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
 327
 328     /* parse existing devices first */
 329 #ifdef HAVE_HAL_1
 330     if( ( devices = libhal_get_all_devices( p_sys->p_ctx, &i_devices, NULL ) ) )
 331 #else
 332     if( ( devices = hal_get_all_devices( p_sys->p_ctx, &i_devices ) ) )
 333 #endif
 334     {
 335         for( i = 0; i < i_devices; i++ )
 336         {
 337             ParseDevice( p_sd, devices[ i ] );
 338         }
 339     }
 340
 341     while( !p_sd->b_die )
 342     {
 343         msleep( 100000 );
 344     }
 345 }