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 #ifdef HAVE_SYS_STAT_H
  35 #include <sys/stat.h>
  36 #endif
  37
  38 #include "libmtp.h"
  39
  40 /*****************************************************************************
  41  * Module descriptor
  42  *****************************************************************************/
  43 static int Open( vlc_object_t * );
  44 static void Close( vlc_object_t * );
  45
  46 VLC_SD_PROBE_HELPER("mtp", N_("MTP devices"))
  47
  48 vlc_module_begin()
  49     set_shortname( "MTP" )
  50     set_description( N_( "MTP devices" ) )
  51     set_category( CAT_PLAYLIST )
  52     set_subcategory( SUBCAT_PLAYLIST_SD )
  53     set_capability( "services_discovery", 0 )
  54     set_callbacks( Open, Close )
  55     linked_with_a_crap_library_which_uses_atexit()
  56
  57     VLC_SD_PROBE_SUBMODULE
  58 vlc_module_end()
  59
  60
  61 /*****************************************************************************
  62  * Local prototypes
  63  *****************************************************************************/
  64
  65 static void *Run( void * );
  66
  67 static int AddDevice( services_discovery_t *, LIBMTP_raw_device_t * );
  68 static void AddTrack( services_discovery_t *, LIBMTP_track_t *);
  69 static void CloseDevice( services_discovery_t * );
  70 static int CountTracks( uint64_t const, uint64_t const, void const * const );
  71
  72 /*****************************************************************************
  73  * Local structures
  74  *****************************************************************************/
  75
  76 struct services_discovery_sys_t
  77 {
  78     int i_tracks_num;
  79     input_item_t **pp_items;
  80     int i_count;
  81     char *psz_name;
  82     uint32_t i_bus;
  83     uint8_t i_dev;
  84     uint16_t i_product_id;
  85     vlc_thread_t thread;
  86 };
  87
  88 static vlc_mutex_t mtp_lock = VLC_STATIC_MUTEX;
  89 static bool b_mtp_initialized = false;
  90
  91 /*****************************************************************************
  92  * Open: initialize and create stuff
  93  *****************************************************************************/
  94 static int Open( vlc_object_t *p_this )
  95 {
  96     services_discovery_t *p_sd = ( services_discovery_t * )p_this;
  97     services_discovery_sys_t *p_sys;
  98
  99     if( !( p_sys = malloc( sizeof( services_discovery_sys_t ) ) ) )
 100         return VLC_ENOMEM;
 101     p_sd->p_sys = p_sys;
 102     p_sys->psz_name = NULL;
 103
 104     vlc_mutex_lock( &mtp_lock );
 105     if( !b_mtp_initialized )
 106     {
 107         LIBMTP_Init();
 108         b_mtp_initialized = true;
 109     }
 110     vlc_mutex_unlock( &mtp_lock );
 111
 112     if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
 113     {
 114         free (p_sys);
 115         return VLC_EGENERIC;
 116     }
 117     return VLC_SUCCESS;
 118 }
 119
 120 /*****************************************************************************
 121  * Close: cleanup
 122  *****************************************************************************/
 123 static void Close( vlc_object_t *p_this )
 124 {
 125     services_discovery_t *p_sd = ( services_discovery_t * )p_this;
 126
 127     free( p_sd->p_sys->psz_name );
 128     vlc_cancel (p_sd->p_sys->thread);
 129     vlc_join (p_sd->p_sys->thread, NULL);
 130     free( p_sd->p_sys );
 131 }
 132
 133 /*****************************************************************************
 134  * Run: main thread
 135  *****************************************************************************/
 136 static void *Run( void *data )
 137 {
 138     LIBMTP_raw_device_t *p_rawdevices;
 139     int i_numrawdevices;
 140     int i_ret;
 141     int i_status = 0;
 142     services_discovery_t *p_sd = data;
 143
 144     for(;;)
 145     {
 146         int canc = vlc_savecancel();
 147         i_ret = LIBMTP_Detect_Raw_Devices( &p_rawdevices, &i_numrawdevices );
 148         if ( i_ret == 0 && i_numrawdevices > 0 && p_rawdevices != NULL &&
 149              i_status == 0 )
 150         {
 151             /* Found a new device, add it */
 152             msg_Dbg( p_sd, "New device found" );
 153             if( AddDevice( p_sd, &p_rawdevices[0] ) == VLC_SUCCESS )
 154                 i_status = 1;
 155         }
 156         else
 157         {
 158             if ( ( i_ret != 0 || i_numrawdevices == 0 || p_rawdevices == NULL )
 159                  && i_status == 1)
 160             {
 161                 /* The device is not connected anymore, delete it */
 162                 msg_Info( p_sd, "Device disconnected" );
 163                 CloseDevice( p_sd );
 164                 i_status = 0;
 165             }
 166         }
 167         free( p_rawdevices );
 168         vlc_restorecancel(canc);
 169         msleep( 500000 );
 170     }
 171     return NULL;
 172 }
 173
 174 /*****************************************************************************
 175  * Everything else
 176  *****************************************************************************/
 177 static int AddDevice( services_discovery_t *p_sd,
 178                       LIBMTP_raw_device_t *p_raw_device )
 179 {
 180     char *psz_name = NULL;
 181     LIBMTP_mtpdevice_t *p_device;
 182     LIBMTP_track_t *p_track, *p_tmp;
 183
 184     if( ( p_device = LIBMTP_Open_Raw_Device( p_raw_device ) ) != NULL )
 185     {
 186         if( !( psz_name = LIBMTP_Get_Friendlyname( p_device ) ) )
 187             if( !( psz_name = LIBMTP_Get_Modelname( p_device ) ) )
 188                 if( !( psz_name = strdup( N_( "MTP Device" ) ) ) )
 189                     return VLC_ENOMEM;
 190         msg_Info( p_sd, "Found device: %s", psz_name );
 191         p_sd->p_sys->i_bus = p_raw_device->bus_location;
 192         p_sd->p_sys->i_dev = p_raw_device->devnum;
 193         p_sd->p_sys->i_product_id = p_raw_device->device_entry.product_id;
 194         if( ( p_track = LIBMTP_Get_Tracklisting_With_Callback( p_device,
 195                             CountTracks, p_sd ) ) == NULL )
 196         {
 197             msg_Warn( p_sd, "No tracks on the device" );
 198         }
 199         else
 200         {
 201             if( !( p_sd->p_sys->pp_items = calloc( p_sd->p_sys->i_tracks_num,
 202                                                    sizeof( input_item_t * ) ) ) )
 203             {
 204                 free( psz_name );
 205                 return VLC_ENOMEM;
 206             }
 207             p_sd->p_sys->i_count = 0;
 208             while( p_track != NULL )
 209             {
 210                 msg_Dbg( p_sd, "Track found: %s - %s", p_track->artist,
 211                          p_track->title );
 212                 AddTrack( p_sd, p_track );
 213                 p_tmp = p_track;
 214                 p_track = p_track->next;
 215                 LIBMTP_destroy_track_t( p_tmp );
 216             }
 217         }
 218         p_sd->p_sys->psz_name = psz_name;
 219         LIBMTP_Release_Device( p_device );
 220         return VLC_SUCCESS;
 221     }
 222     else
 223     {
 224         msg_Warn( p_sd, "No device found, after all" );
 225         return VLC_EGENERIC;
 226     }
 227 }
 228
 229 static void AddTrack( services_discovery_t *p_sd, LIBMTP_track_t *p_track )
 230 {
 231     input_item_t *p_input;
 232     char *psz_string;
 233     char *extension;
 234
 235     extension = rindex( p_track->filename, '.' );
 236     if( asprintf( &psz_string, "mtp://%"PRIu32":%"PRIu8":%"PRIu16":%d%s",
 237                   p_sd->p_sys->i_bus, p_sd->p_sys->i_dev,
 238                   p_sd->p_sys->i_product_id, p_track->item_id,
 239                   extension ) == -1 )
 240     {
 241         msg_Err( p_sd, "Error adding %s, skipping it", p_track->filename );
 242         return;
 243     }
 244     if( ( p_input = input_item_New( p_sd, psz_string,
 245                                     p_track->title ) ) == NULL )
 246     {
 247         msg_Err( p_sd, "Error adding %s, skipping it", p_track->filename );
 248         free( psz_string );
 249         return;
 250     }
 251     free( psz_string );
 252
 253     input_item_SetArtist( p_input, p_track->artist );
 254     input_item_SetGenre( p_input, p_track->genre );
 255     input_item_SetAlbum( p_input, p_track->album );
 256     if( asprintf( &psz_string, "%d", p_track->tracknumber ) != -1 )
 257     {
 258         input_item_SetTrackNum( p_input, psz_string );
 259         free( psz_string );
 260     }
 261     if( asprintf( &psz_string, "%d", p_track->rating ) != -1 )
 262     {
 263         input_item_SetRating( p_input, psz_string );
 264         free( psz_string );
 265     }
 266     input_item_SetDate( p_input, p_track->date );
 267     input_item_SetDuration( p_input, p_track->duration * 1000 );
 268     services_discovery_AddItem( p_sd, p_input, NULL );
 269     p_sd->p_sys->pp_items[p_sd->p_sys->i_count++] = p_input;
 270 }
 271
 272 static void CloseDevice( services_discovery_t *p_sd )
 273 {
 274     input_item_t **pp_items = p_sd->p_sys->pp_items;
 275     int i_i;
 276
 277     if( pp_items != NULL )
 278     {
 279         for( i_i = 0; i_i < p_sd->p_sys->i_count; i_i++ )
 280         {
 281             if( pp_items[i_i] != NULL )
 282             {
 283                 services_discovery_RemoveItem( p_sd, pp_items[i_i] );
 284                 vlc_gc_decref( pp_items[i_i] );
 285             }
 286         }
 287         free( pp_items );
 288     }
 289 }
 290
 291 static int CountTracks( uint64_t const sent, uint64_t const total,
 292                         void const * const data )
 293 {
 294     VLC_UNUSED( sent );
 295     services_discovery_t *p_sd = (services_discovery_t *)data;
 296     p_sd->p_sys->i_tracks_num = total;
 297     return 0;
 298 }