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

   1 /*****************************************************************************
   2  * mtp.c :  MTP interface module
   3  *****************************************************************************
   4  * Copyright (C) 2009 the VideoLAN team
   5  *
   6  * Authors: Fabio Ritrovato <exsephiroth87@gmail.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <vlc_common.h>
  28 #include <vlc_playlist.h>
  29 #include <vlc_plugin.h>
  30 #include <vlc_charset.h>
  31 #include <vlc_interface.h>
  32 #include <vlc_services_discovery.h>
  33
  34 #include "libmtp.h"
  35
  36 /*****************************************************************************
  37  * Module descriptor
  38  *****************************************************************************/
  39 static int Open( vlc_object_t * );
  40 static void Close( vlc_object_t * );
  41
  42 VLC_SD_PROBE_HELPER("mtp", N_("MTP devices"))
  43
  44 vlc_module_begin()
  45     set_shortname( "MTP" )
  46     set_description( N_( "MTP devices" ) )
  47     set_category( CAT_PLAYLIST )
  48     set_subcategory( SUBCAT_PLAYLIST_SD )
  49     set_capability( "services_discovery", 0 )
  50     set_callbacks( Open, Close )
  51     linked_with_a_crap_library_which_uses_atexit()
  52
  53     VLC_SD_PROBE_SUBMODULE
  54 vlc_module_end()
  55
  56
  57 /*****************************************************************************
  58  * Local prototypes
  59  *****************************************************************************/
  60
  61 static void *Run( void * );
  62
  63 static int AddDevice( services_discovery_t *, LIBMTP_raw_device_t * );
  64 static void AddTrack( services_discovery_t *, LIBMTP_track_t *);
  65 static void CloseDevice( services_discovery_t * );
  66 static int CountTracks( uint64_t const, uint64_t const, void const * const );
  67
  68 /*****************************************************************************
  69  * Local structures
  70  *****************************************************************************/
  71
  72 struct services_discovery_sys_t
  73 {
  74     int i_tracks_num;
  75     input_item_t **pp_items;
  76     int i_count;
  77     char *psz_name;
  78     uint32_t i_bus;
  79     uint8_t i_dev;
  80     uint16_t i_product_id;
  81     vlc_thread_t thread;
  82 };
  83
  84 static vlc_mutex_t mtp_lock = VLC_STATIC_MUTEX;
  85 static bool b_mtp_initialized = false;
  86
  87 /*****************************************************************************
  88  * Open: initialize and create stuff
  89  *****************************************************************************/
  90 static int Open( vlc_object_t *p_this )
  91 {
  92     services_discovery_t *p_sd = ( services_discovery_t * )p_this;
  93     services_discovery_sys_t *p_sys;
  94
  95     if( !( p_sys = malloc( sizeof( services_discovery_sys_t ) ) ) )
  96         return VLC_ENOMEM;
  97     p_sd->p_sys = p_sys;
  98     p_sys->psz_name = NULL;
  99
 100     vlc_mutex_lock( &mtp_lock );
 101     if( !b_mtp_initialized )
 102     {
 103         LIBMTP_Init();
 104         b_mtp_initialized = true;
 105     }
 106     vlc_mutex_unlock( &mtp_lock );
 107
 108     if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
 109     {
 110         free (p_sys);
 111         return VLC_EGENERIC;
 112     }
 113     return VLC_SUCCESS;
 114 }
 115
 116 /*****************************************************************************
 117  * Close: cleanup
 118  *****************************************************************************/
 119 static void Close( vlc_object_t *p_this )
 120 {
 121     services_discovery_t *p_sd = ( services_discovery_t * )p_this;
 122
 123     free( p_sd->p_sys->psz_name );
 124     vlc_cancel (p_sd->p_sys->thread);
 125     vlc_join (p_sd->p_sys->thread, NULL);
 126     free( p_sd->p_sys );
 127 }
 128
 129 /*****************************************************************************
 130  * Run: main thread
 131  *****************************************************************************/
 132 static void *Run( void *data )
 133 {
 134     LIBMTP_raw_device_t *p_rawdevices;
 135     int i_numrawdevices;
 136     int i_ret;
 137     int i_status = 0;
 138     services_discovery_t *p_sd = data;
 139
 140     for(;;)
 141     {
 142         int canc = vlc_savecancel();
 143         i_ret = LIBMTP_Detect_Raw_Devices( &p_rawdevices, &i_numrawdevices );
 144         if ( i_ret == 0 && i_numrawdevices > 0 && p_rawdevices != NULL &&
 145              i_status == 0 )
 146         {
 147             /* Found a new device, add it */
 148             msg_Dbg( p_sd, "New device found" );
 149             if( AddDevice( p_sd, &p_rawdevices[0] ) == VLC_SUCCESS )
 150                 i_status = 1;
 151         }
 152         else
 153         {
 154             if ( ( i_ret != 0 || i_numrawdevices == 0 || p_rawdevices == NULL )
 155                  && i_status == 1)
 156             {
 157                 /* The device is not connected anymore, delete it */
 158                 msg_Info( p_sd, "Device disconnected" );
 159                 CloseDevice( p_sd );
 160                 i_status = 0;
 161             }
 162         }
 163         free( p_rawdevices );
 164         vlc_restorecancel(canc);
 165         msleep( 500000 );
 166     }
 167     return NULL;
 168 }
 169
 170 /*****************************************************************************
 171  * Everything else
 172  *****************************************************************************/
 173 static int AddDevice( services_discovery_t *p_sd,
 174                       LIBMTP_raw_device_t *p_raw_device )
 175 {
 176     char *psz_name = NULL;
 177     LIBMTP_mtpdevice_t *p_device;
 178     LIBMTP_track_t *p_track, *p_tmp;
 179
 180     if( ( p_device = LIBMTP_Open_Raw_Device( p_raw_device ) ) != NULL )
 181     {
 182         if( !( psz_name = LIBMTP_Get_Friendlyname( p_device ) ) )
 183             if( !( psz_name = LIBMTP_Get_Modelname( p_device ) ) )
 184                 if( !( psz_name = strdup( N_( "MTP Device" ) ) ) )
 185                     return VLC_ENOMEM;
 186         msg_Info( p_sd, "Found device: %s", psz_name );
 187         p_sd->p_sys->i_bus = p_raw_device->bus_location;
 188         p_sd->p_sys->i_dev = p_raw_device->devnum;
 189         p_sd->p_sys->i_product_id = p_raw_device->device_entry.product_id;
 190         if( ( p_track = LIBMTP_Get_Tracklisting_With_Callback( p_device,
 191                             CountTracks, p_sd ) ) == NULL )
 192         {
 193             msg_Warn( p_sd, "No tracks on the device" );
 194         }
 195         else
 196         {
 197             if( !( p_sd->p_sys->pp_items = calloc( p_sd->p_sys->i_tracks_num,
 198                                                    sizeof( input_item_t * ) ) ) )
 199             {
 200                 free( psz_name );
 201                 return VLC_ENOMEM;
 202             }
 203             p_sd->p_sys->i_count = 0;
 204             while( p_track != NULL )
 205             {
 206                 msg_Dbg( p_sd, "Track found: %s - %s", p_track->artist,
 207                          p_track->title );
 208                 AddTrack( p_sd, p_track );
 209                 p_tmp = p_track;
 210                 p_track = p_track->next;
 211                 LIBMTP_destroy_track_t( p_tmp );
 212             }
 213         }
 214         p_sd->p_sys->psz_name = psz_name;
 215         LIBMTP_Release_Device( p_device );
 216         return VLC_SUCCESS;
 217     }
 218     else
 219     {
 220         msg_Warn( p_sd, "No device found, after all" );
 221         return VLC_EGENERIC;
 222     }
 223 }
 224
 225 static void AddTrack( services_discovery_t *p_sd, LIBMTP_track_t *p_track )
 226 {
 227     input_item_t *p_input;
 228     char *psz_string;
 229     char *extension;
 230
 231     extension = rindex( p_track->filename, '.' );
 232     if( asprintf( &psz_string, "mtp://%"PRIu32":%"PRIu8":%"PRIu16":%d%s",
 233                   p_sd->p_sys->i_bus, p_sd->p_sys->i_dev,
 234                   p_sd->p_sys->i_product_id, p_track->item_id,
 235                   extension ) == -1 )
 236     {
 237         msg_Err( p_sd, "Error adding %s, skipping it", p_track->filename );
 238         return;
 239     }
 240     if( ( p_input = input_item_New( p_sd, psz_string,
 241                                     p_track->title ) ) == NULL )
 242     {
 243         msg_Err( p_sd, "Error adding %s, skipping it", p_track->filename );
 244         free( psz_string );
 245         return;
 246     }
 247     free( psz_string );
 248
 249     input_item_SetArtist( p_input, p_track->artist );
 250     input_item_SetGenre( p_input, p_track->genre );
 251     input_item_SetAlbum( p_input, p_track->album );
 252     if( asprintf( &psz_string, "%d", p_track->tracknumber ) != -1 )
 253     {
 254         input_item_SetTrackNum( p_input, psz_string );
 255         free( psz_string );
 256     }
 257     if( asprintf( &psz_string, "%d", p_track->rating ) != -1 )
 258     {
 259         input_item_SetRating( p_input, psz_string );
 260         free( psz_string );
 261     }
 262     input_item_SetDate( p_input, p_track->date );
 263     input_item_SetDuration( p_input, p_track->duration * 1000 );
 264     services_discovery_AddItem( p_sd, p_input, NULL );
 265     p_sd->p_sys->pp_items[p_sd->p_sys->i_count++] = p_input;
 266 }
 267
 268 static void CloseDevice( services_discovery_t *p_sd )
 269 {
 270     input_item_t **pp_items = p_sd->p_sys->pp_items;
 271     int i_i;
 272
 273     if( pp_items != NULL )
 274     {
 275         for( i_i = 0; i_i < p_sd->p_sys->i_count; i_i++ )
 276         {
 277             if( pp_items[i_i] != NULL )
 278             {
 279                 services_discovery_RemoveItem( p_sd, pp_items[i_i] );
 280                 vlc_gc_decref( pp_items[i_i] );
 281             }
 282         }
 283         free( pp_items );
 284     }
 285 }
 286
 287 static int CountTracks( uint64_t const sent, uint64_t const total,
 288                         void const * const data )
 289 {
 290     VLC_UNUSED( sent );
 291     services_discovery_t *p_sd = (services_discovery_t *)data;
 292     p_sd->p_sys->i_tracks_num = total;
 293     return 0;
 294 }