/***************************************************************************** * hal.c :  HAL interface module ***************************************************************************** * Copyright (C) 2004 the VideoLAN team * Copyright ? 2006-2007 Rafa?l Carré * $Id: b45b5fdee0485db9e789c5b4fa601b05a91dddae $ * * Authors: Clément Stenac <zorglub@videolan.org> *          Rafa?l Carré <funman at videolanorg> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/#ifdef HAVE_CONFIG_H# include "config.h"#endif#include <vlc_common.h>#include <vlc_plugin.h>#include <vlc_playlist.h>#include <vlc_network.h>#include <errno.h>                                                 /* ENOMEM */#ifdef HAVE_UNISTD_H#    include <unistd.h>#endif#ifdef HAVE_SYS_TIME_H#    include <sys/time.h>#endif#include <hal/libhal.h>#define MAX_LINE_LENGTH 256/***************************************************************************** * Local prototypes *****************************************************************************//* store relation between item id and udi for ejection */struct udi_input_id_t{    char            *psz_udi;    input_item_t    *p_item;};struct services_discovery_sys_t{    LibHalContext           *p_ctx;    DBusConnection          *p_connection;    int                     i_devices_number;    struct udi_input_id_t   **pp_devices;};static void Run    ( services_discovery_t *p_intf );static int  Open ( vlc_object_t * );static void Close( vlc_object_t * );/* HAL callbacks */void DeviceAdded( LibHalContext *p_ctx, const char *psz_udi );void DeviceRemoved( LibHalContext *p_ctx, const char *psz_udi );/* to retrieve p_sd in HAL callbacks */services_discovery_t        *p_sd_global;/***************************************************************************** * Module descriptor *****************************************************************************/vlc_module_begin();    set_description( N_("HAL devices detection") );    set_category( CAT_PLAYLIST );    set_subcategory( SUBCAT_PLAYLIST_SD );    set_capability( "services_discovery", 0 );    set_callbacks( Open, Close );vlc_module_end();/***************************************************************************** * Open: initialize and create stuff *****************************************************************************/static int Open( vlc_object_t *p_this ){    services_discovery_t *p_sd = ( services_discovery_t* )p_this;    services_discovery_sys_t *p_sys  = malloc(                                    sizeof( services_discovery_sys_t ) );    if( !p_sys )        return VLC_ENOMEM;    DBusError           dbus_error;    DBusConnection      *p_connection;    p_sd_global = p_sd;    p_sys->i_devices_number = 0;    p_sys->pp_devices = NULL;    p_sd->pf_run = Run;    p_sd->p_sys  = p_sys;    dbus_error_init( &dbus_error );    p_sys->p_ctx = libhal_ctx_new();    if( !p_sys->p_ctx )    {        msg_Err( p_sd, "unable to create HAL context") ;        free( p_sys );        return VLC_EGENERIC;    }    p_connection = dbus_bus_get( DBUS_BUS_SYSTEM, &dbus_error );    if( dbus_error_is_set( &dbus_error ) )    {        msg_Err( p_sd, "unable to connect to DBUS: %s", dbus_error.message );        dbus_error_free( &dbus_error );        free( p_sys );        return VLC_EGENERIC;    }    libhal_ctx_set_dbus_connection( p_sys->p_ctx, p_connection );    p_sys->p_connection = p_connection;    if( !libhal_ctx_init( p_sys->p_ctx, &dbus_error ) )    {        msg_Err( p_sd, "hal not available : %s", dbus_error.message );        dbus_error_free( &dbus_error );        free( p_sys );        return VLC_EGENERIC;    }    if( !libhal_ctx_set_device_added( p_sys->p_ctx, DeviceAdded ) ||            !libhal_ctx_set_device_removed( p_sys->p_ctx, DeviceRemoved ) )    {        msg_Err( p_sd, "unable to add callback" );        dbus_error_free( &dbus_error );        free( p_sys );        return VLC_EGENERIC;    }    services_discovery_SetLocalizedName( p_sd, _("Devices") );    return VLC_SUCCESS;}/***************************************************************************** * Close: *****************************************************************************/static void Close( vlc_object_t *p_this ){    services_discovery_t *p_sd = ( services_discovery_t* )p_this;    services_discovery_sys_t *p_sys  = p_sd->p_sys;    dbus_connection_unref( p_sys->p_connection );    struct udi_input_id_t *p_udi_entry;    while( p_sys->i_devices_number > 0 )    {        p_udi_entry = p_sys->pp_devices[0];        free( p_udi_entry->psz_udi );        TAB_REMOVE( p_sys->i_devices_number, p_sys->pp_devices,                p_sys->pp_devices[0] );        free( p_udi_entry );    }    p_sys->pp_devices = NULL;    free( p_sys );}static void AddItem( services_discovery_t *p_sd, input_item_t * p_input,                    const char* psz_device ){    services_discovery_sys_t *p_sys  = p_sd->p_sys;    services_discovery_AddItem( p_sd, p_input, NULL /* no category */ );    struct udi_input_id_t *p_udi_entry;    p_udi_entry = malloc( sizeof( struct udi_input_id_t ) );    if( !p_udi_entry )        return;    p_udi_entry->psz_udi = strdup( psz_device );    if( !p_udi_entry->psz_udi )    {        free( p_udi_entry );        return;    }    vlc_gc_incref( p_input );    p_udi_entry->p_item = p_input;    TAB_APPEND( p_sys->i_devices_number, p_sys->pp_devices, p_udi_entry );}static void AddDvd( services_discovery_t *p_sd, const char *psz_device ){    char *psz_name;    char *psz_uri;    char *psz_blockdevice;    input_item_t        *p_input;    psz_name = libhal_device_get_property_string( p_sd->p_sys->p_ctx,                                        psz_device, "volume.label", NULL );    psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,                                        psz_device, "block.device", NULL );    if( asprintf( &psz_uri, "dvd://%s", psz_blockdevice ) == -1 )        return;    /* Create the playlist item here */    p_input = input_item_New( p_sd, psz_uri, psz_name );    free( psz_uri );    if( !p_input )    {        return;    }    AddItem( p_sd, p_input, psz_device );    vlc_gc_decref( p_input );}static void DelItem( services_discovery_t *p_sd, const char* psz_udi ){    services_discovery_sys_t    *p_sys  = p_sd->p_sys;    int i;    for( i = 0; i < p_sys->i_devices_number; i++ )    { /*  looks for a matching udi */        if( strcmp( psz_udi, p_sys->pp_devices[i]->psz_udi ) == 0 )        { /* delete the corresponding item */                services_discovery_RemoveItem( p_sd, p_sys->pp_devices[i]->p_item );            vlc_gc_decref( p_sys->pp_devices[i]->p_item );            free( p_sys->pp_devices[i]->psz_udi );            TAB_REMOVE( p_sys->i_devices_number, p_sys->pp_devices,                    p_sys->pp_devices[i] );        }    }}static void AddCdda( services_discovery_t *p_sd, const char *psz_device ){    char *psz_uri;    char *psz_blockdevice;    input_item_t     *p_input;    psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,                                            psz_device, "block.device", NULL );    if( asprintf( &psz_uri, "cdda://%s", psz_blockdevice ) == -1 )        return;    /* Create the item here */    p_input = input_item_New( p_sd, psz_uri, "Audio CD" );    free( psz_uri );    if( !p_input )        return;    AddItem( p_sd, p_input, psz_device );    vlc_gc_decref( p_input );}static void ParseDevice( services_discovery_t *p_sd, const char *psz_device ){    char *psz_disc_type;    services_discovery_sys_t    *p_sys  = p_sd->p_sys;    if( !libhal_device_property_exists( p_sys->p_ctx, psz_device,                                       "volume.disc.type", NULL ) )        return;    psz_disc_type = libhal_device_get_property_string( p_sys->p_ctx,                                                    psz_device,                                                    "volume.disc.type",                                                    NULL );    if( !strncmp( psz_disc_type, "dvd_r", 5 ) )    {        if (libhal_device_get_property_bool( p_sys->p_ctx, psz_device,                                     "volume.disc.is_videodvd", NULL ) )        AddDvd( p_sd, psz_device );    }    else if( !strncmp( psz_disc_type, "cd_r", 4 ) )    {        if( libhal_device_get_property_bool( p_sys->p_ctx, psz_device,                                     "volume.disc.has_audio" , NULL ) )            AddCdda( p_sd, psz_device );    }}/***************************************************************************** * Run: main HAL thread *****************************************************************************/static void Run( services_discovery_t *p_sd ){    int i, i_devices;    char **devices;    services_discovery_sys_t    *p_sys  = p_sd->p_sys;    /* parse existing devices first */    if( ( devices = libhal_get_all_devices( p_sys->p_ctx, &i_devices, NULL ) ) )    {        for( i = 0; i < i_devices; i++ )        {            ParseDevice( p_sd, devices[ i ] );            libhal_free_string( devices[ i ] );        }    }    while( vlc_object_alive (p_sd) )    {        /* look for events on the bus, blocking 1 second */        dbus_connection_read_write_dispatch( p_sys->p_connection, 1000 );        /* HAL 0.5.8.1 can use libhal_ctx_get_dbus_connection(p_sys->p_ctx) */    }}void DeviceAdded( LibHalContext *p_ctx, const char *psz_udi ){    VLC_UNUSED(p_ctx);    ParseDevice( p_sd_global, psz_udi );}void DeviceRemoved( LibHalContext *p_ctx, const char *psz_udi ){    VLC_UNUSED(p_ctx);    DelItem( p_sd_global, psz_udi );}