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 <errno.h>
  31 #include <vlc_charset.h>
  32 #include <vlc_interface.h>
  33 #include <vlc_services_discovery.h>
  34
  35 #ifdef HAVE_SYS_STAT_H
  36 #include <sys/stat.h>
  37 #endif
  38
  39 #include "libmtp.h"
  40
  41 /*****************************************************************************
  42  * Module descriptor
  43  *****************************************************************************/
  44 static int Open( vlc_object_t * );
  45 static void Close( vlc_object_t * );
  46
  47 VLC_SD_PROBE_HELPER("mtp", N_("MTP devices"))
  48
  49 vlc_module_begin()
  50     set_shortname( "MTP" )
  51     set_description( N_( "MTP devices" ) )
  52     set_category( CAT_PLAYLIST )
  53     set_subcategory( SUBCAT_PLAYLIST_SD )
  54     set_capability( "services_discovery", 0 )
  55     set_callbacks( Open, Close )
  56     linked_with_a_crap_library_which_uses_atexit()
  57
  58     VLC_SD_PROBE_SUBMODULE
  59 vlc_module_end()
  60
  61
  62 /*****************************************************************************
  63  * Local prototypes
  64  *****************************************************************************/
  65
  66 static void *Run( void * );
  67
  68 static int AddDevice( services_discovery_t *, LIBMTP_raw_device_t * );
  69 static void AddTrack( services_discovery_t *, LIBMTP_track_t *);
  70 static void CloseDevice( services_discovery_t * );
  71 static int CountTracks( uint64_t const, uint64_t const, void const * const );
  72
  73 /*****************************************************************************
  74  * Local structures
  75  *****************************************************************************/
  76
  77 struct services_discovery_sys_t
  78 {
  79     int i_tracks_num;
  80     input_item_t **pp_items;
  81     int i_count;
  82     char *psz_name;
  83     uint32_t i_bus;
  84     uint8_t i_dev;
  85     uint16_t i_product_id;
  86     vlc_thread_t thread;
  87 };
  88
  89 static vlc_mutex_t mtp_lock = VLC_STATIC_MUTEX;
  90 static bool b_mtp_initialized = false;
  91
  92 /*****************************************************************************
  93  * Open: initialize and create stuff
  94  *****************************************************************************/
  95 static int Open( vlc_object_t *p_this )
  96 {
  97     services_discovery_t *p_sd = ( services_discovery_t * )p_this;
  98     services_discovery_sys_t *p_sys;
  99
 100     if( !( p_sys = malloc( sizeof( services_discovery_sys_t ) ) ) )
 101         return VLC_ENOMEM;
 102     p_sd->p_sys = p_sys;
 103     p_sys->psz_name = NULL;
 104
 105     vlc_mutex_lock( &mtp_lock );
 106     if( !b_mtp_initialized )
 107     {
 108         LIBMTP_Init();
 109         b_mtp_initialized = true;
 110     }
 111     vlc_mutex_unlock( &mtp_lock );
 112
 113     if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
 114     {
 115         free (p_sys);
 116         return VLC_EGENERIC;
 117     }
 118     return VLC_SUCCESS;
 119 }
 120
 121 /*****************************************************************************
 122  * Close: cleanup
 123  *****************************************************************************/
 124 static void Close( vlc_object_t *p_this )
 125 {
 126     services_discovery_t *p_sd = ( services_discovery_t * )p_this;
 127
 128     free( p_sd->p_sys->psz_name );
 129     vlc_cancel (p_sd->p_sys->thread);
 130     vlc_join (p_sd->p_sys->thread, NULL);
 131     free( p_sd->p_sys );
 132 }
 133
 134 /*****************************************************************************
 135  * Run: main thread
 136  *****************************************************************************/
 137 static void *Run( void *data )
 138 {
 139     LIBMTP_raw_device_t *p_rawdevices;
 140     int i_numrawdevices;
 141     int i_ret;
 142     int i_status = 0;
 143     services_discovery_t *p_sd = data;
 144
 145     for(;;)
 146     {
 147         int canc = vlc_savecancel();
 148         i_ret = LIBMTP_Detect_Raw_Devices( &p_rawdevices, &i_numrawdevices );
 149         if ( i_ret == 0 && i_numrawdevices > 0 && p_rawdevices != NULL &&
 150              i_status == 0 )
 151         {
 152             /* Found a new device, add it */
 153             msg_Dbg( p_sd, "New device found" );
 154             if( AddDevice( p_sd, &p_rawdevices[0] ) == VLC_SUCCESS )
 155                 i_status = 1;
 156         }
 157         else
 158         {
 159             if ( ( i_ret != 0 || i_numrawdevices == 0 || p_rawdevices == NULL )
 160                  && i_status == 1)
 161             {
 162                 /* The device is not connected anymore, delete it */
 163                 msg_Info( p_sd, "Device disconnected" );
 164                 CloseDevice( p_sd );
 165                 i_status = 0;
 166             }
 167         }
 168         free( p_rawdevices );
 169         vlc_restorecancel(canc);
 170         msleep( 500000 );
 171     }
 172     return NULL;
 173 }
 174
 175 /*****************************************************************************
 176  * Everything else
 177  *****************************************************************************/
 178 static int AddDevice( services_discovery_t *p_sd,
 179                       LIBMTP_raw_device_t *p_raw_device )
 180 {
 181     char *psz_name = NULL;
 182     LIBMTP_mtpdevice_t *p_device;
 183     LIBMTP_track_t *p_track, *p_tmp;
 184
 185     if( ( p_device = LIBMTP_Open_Raw_Device( p_raw_device ) ) != NULL )
 186     {
 187         if( !( psz_name = LIBMTP_Get_Friendlyname( p_device ) ) )
 188             if( !( psz_name = LIBMTP_Get_Modelname( p_device ) ) )
 189                 if( !( psz_name = strdup( N_( "MTP Device" ) ) ) )
 190                     return VLC_ENOMEM;
 191         msg_Info( p_sd, "Found device: %s", psz_name );
 192         p_sd->p_sys->i_bus = p_raw_device->bus_location;
 193         p_sd->p_sys->i_dev = p_raw_device->devnum;
 194         p_sd->p_sys->i_product_id = p_raw_device->device_entry.product_id;
 195         if( ( p_track = LIBMTP_Get_Tracklisting_With_Callback( p_device,
 196                             CountTracks, p_sd ) ) == NULL )
 197         {
 198             msg_Warn( p_sd, "No tracks on the device" );
 199         }
 200         else
 201         {
 202             if( !( p_sd->p_sys->pp_items = calloc( p_sd->p_sys->i_tracks_num,
 203                                                    sizeof( input_item_t * ) ) ) )
 204             {
 205                 free( psz_name );
 206                 return VLC_ENOMEM;
 207             }
 208             p_sd->p_sys->i_count = 0;
 209             while( p_track != NULL )
 210             {
 211                 msg_Dbg( p_sd, "Track found: %s - %s", p_track->artist,
 212                          p_track->title );
 213                 AddTrack( p_sd, p_track );
 214                 p_tmp = p_track;
 215                 p_track = p_track->next;
 216                 LIBMTP_destroy_track_t( p_tmp );
 217             }
 218         }
 219         p_sd->p_sys->psz_name = psz_name;
 220         LIBMTP_Release_Device( p_device );
 221         return VLC_SUCCESS;
 222     }
 223     else
 224     {
 225         msg_Warn( p_sd, "No device found, after all" );
 226         return VLC_EGENERIC;
 227     }
 228 }
 229
 230 static void AddTrack( services_discovery_t *p_sd, LIBMTP_track_t *p_track )
 231 {
 232     input_item_t *p_input;
 233     char *psz_string;
 234     char *extension;
 235
 236     extension = rindex( p_track->filename, '.' );
 237     if( asprintf( &psz_string, "mtp://%"PRIu32":%"PRIu8":%"PRIu16":%d%s",
 238                   p_sd->p_sys->i_bus, p_sd->p_sys->i_dev,
 239                   p_sd->p_sys->i_product_id, p_track->item_id,
 240                   extension ) == -1 )
 241     {
 242         msg_Err( p_sd, "Error adding %s, skipping it", p_track->filename );
 243         return;
 244     }
 245     if( ( p_input = input_item_New( p_sd, psz_string,
 246                                     p_track->title ) ) == NULL )
 247     {
 248         msg_Err( p_sd, "Error adding %s, skipping it", p_track->filename );
 249         free( psz_string );
 250         return;
 251     }
 252     free( psz_string );
 253
 254     input_item_SetArtist( p_input, p_track->artist );
 255     input_item_SetGenre( p_input, p_track->genre );
 256     input_item_SetAlbum( p_input, p_track->album );
 257     if( asprintf( &psz_string, "%d", p_track->tracknumber ) != -1 )
 258     {
 259         input_item_SetTrackNum( p_input, psz_string );
 260         free( psz_string );
 261     }
 262     if( asprintf( &psz_string, "%d", p_track->rating ) != -1 )
 263     {
 264         input_item_SetRating( p_input, psz_string );
 265         free( psz_string );
 266     }
 267     input_item_SetDate( p_input, p_track->date );
 268     input_item_SetDuration( p_input, p_track->duration * 1000 );
 269     services_discovery_AddItem( p_sd, p_input, NULL );
 270     p_sd->p_sys->pp_items[p_sd->p_sys->i_count++] = p_input;
 271 }
 272
 273 static void CloseDevice( services_discovery_t *p_sd )
 274 {
 275     input_item_t **pp_items = p_sd->p_sys->pp_items;
 276     int i_i;
 277
 278     if( pp_items != NULL )
 279     {
 280         for( i_i = 0; i_i < p_sd->p_sys->i_count; i_i++ )
 281         {
 282             if( pp_items[i_i] != NULL )
 283             {
 284                 services_discovery_RemoveItem( p_sd, pp_items[i_i] );
 285                 vlc_gc_decref( pp_items[i_i] );
 286             }
 287         }
 288         free( pp_items );
 289     }
 290 }
 291
 292 static int CountTracks( uint64_t const sent, uint64_t const total,
 293                         void const * const data )
 294 {
 295     VLC_UNUSED( sent );
 296     services_discovery_t *p_sd = (services_discovery_t *)data;
 297     p_sd->p_sys->i_tracks_num = total;
 298     return 0;
 299 }