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