git.sesse.net Git - vlc/blob - src/control/vlm.c

   1 /*****************************************************************************
   2  * vlm.c: libvlc new API VLM handling functions
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #include <vlc/libvlc.h>
  25 #include <vlc/libvlc_vlm.h>
  26 #include <vlc_es.h>
  27 #include <vlc_input.h>
  28 #include <vlc_vlm.h>
  29
  30 #include "libvlc_internal.h"
  31
  32 #if 0
  33 /* local function to be used in libvlc_vlm_show_media only */
  34 static char* recurse_answer( char* psz_prefix, vlm_message_t *p_answer ) {
  35     char* psz_childprefix;
  36     char* psz_response="";
  37     char* response_tmp;
  38     int i;
  39     vlm_message_t *aw_child, **paw_child;
  40
  41     asprintf( &psz_childprefix, "%s%s.", psz_prefix, p_answer->psz_name );
  42
  43     if ( p_answer->i_child )
  44     {
  45         paw_child = p_answer->child;
  46         aw_child = *( paw_child );
  47         for( i = 0; i < p_answer->i_child; i++ )
  48         {
  49             asprintf( &response_tmp, "%s%s%s:%s\n",
  50                       psz_response, psz_prefix, aw_child->psz_name,
  51                       aw_child->psz_value );
  52             free( psz_response );
  53             psz_response = response_tmp;
  54             if ( aw_child->i_child )
  55             {
  56                 asprintf(&response_tmp, "%s%s", psz_response,
  57                          recurse_answer(psz_childprefix, aw_child));
  58                 free( psz_response );
  59                 psz_response = response_tmp;
  60             }
  61             paw_child++;
  62             aw_child = *( paw_child );
  63         }
  64     }
  65     free( psz_childprefix );
  66     return psz_response;
  67 }
  68
  69 char* libvlc_vlm_show_media( libvlc_instance_t *p_instance, char *psz_name,
  70                              libvlc_exception_t *p_exception )
  71 {
  72     char *psz_message;
  73     vlm_message_t *answer;
  74     char *psz_response;
  75
  76     CHECK_VLM;
  77     asprintf( &psz_message, "show %s", psz_name );
  78     asprintf( &psz_response, "", psz_name );
  79     vlm_ExecuteCommand( p_instance->libvlc_vlm.p_vlm, psz_message, &answer );
  80     if( answer->psz_value )
  81     {
  82         libvlc_exception_raise( p_exception, "Unable to call show %s: %s",
  83                                 psz_name, answer->psz_value );
  84     }
  85     else
  86     {
  87         if ( answer->child )
  88         {
  89             psz_response = recurse_answer( "", answer );
  90         }
  91     }
  92     free( psz_message );
  93     return(psz_response );
  94 }
  95 #else
  96
  97 char* libvlc_vlm_show_media( libvlc_instance_t *p_instance,
  98                              const char *psz_name,
  99                              libvlc_exception_t *p_exception )
 100 {
 101     (void)p_instance;
 102     /* FIXME is it needed ? */
 103     libvlc_exception_raise( p_exception, "Unable to call show %s", psz_name );
 104     return NULL;
 105 }
 106
 107 #endif /* 0 */
 108 /* VLM events callback. Transmit to libvlc */
 109 static int VlmEvent( vlc_object_t *p_this, const char * name,
 110                      vlc_value_t old_val, vlc_value_t newval, void *param )
 111 {
 112     vlm_event_t *event = (vlm_event_t*)newval.p_address;
 113     libvlc_event_manager_t *p_event_manager = (libvlc_event_manager_t *) param;
 114     libvlc_event_t libvlc_event;
 115
 116     VLC_UNUSED( p_this );
 117     VLC_UNUSED( name );
 118     VLC_UNUSED( old_val );
 119
 120     libvlc_event.u.vlm_media_event.psz_media_name = event->psz_name;
 121
 122     switch( event->i_type )
 123     {
 124     case VLM_EVENT_MEDIA_ADDED:
 125         libvlc_event.type = libvlc_VlmMediaAdded;
 126         break;
 127     case VLM_EVENT_MEDIA_REMOVED:
 128         libvlc_event.type = libvlc_VlmMediaRemoved;
 129         break;
 130     case VLM_EVENT_MEDIA_CHANGED:
 131         libvlc_event.type = libvlc_VlmMediaChanged;
 132         break;
 133     case VLM_EVENT_MEDIA_INSTANCE_STARTED:
 134         libvlc_event.type = libvlc_VlmMediaInstanceStarted;
 135         break;
 136     case VLM_EVENT_MEDIA_INSTANCE_STOPPED:
 137         libvlc_event.type = libvlc_VlmMediaInstanceStopped;
 138         break;
 139     }
 140     libvlc_event_send( p_event_manager, &libvlc_event );
 141     return 0;
 142 }
 143
 144 static void libvlc_vlm_release_internal( libvlc_instance_t *p_instance )
 145 {
 146     vlm_t *p_vlm = p_instance->libvlc_vlm.p_vlm;
 147     if( !p_instance->libvlc_vlm.p_vlm )
 148         return;
 149     /* We need to remove medias in order to receive events */
 150     vlm_Control( p_vlm, VLM_CLEAR_MEDIAS );
 151     vlm_Control( p_vlm, VLM_CLEAR_SCHEDULES );
 152
 153     var_DelCallback( (vlc_object_t *)p_vlm, "intf-event", VlmEvent,
 154                      p_instance->libvlc_vlm.p_event_manager );
 155     p_instance->libvlc_vlm.pf_release = NULL;
 156     libvlc_event_manager_release( p_instance->libvlc_vlm.p_event_manager );
 157     p_instance->libvlc_vlm.p_event_manager = NULL;
 158     vlm_Delete( p_vlm );
 159     p_instance->libvlc_vlm.p_vlm = NULL;
 160 }
 161
 162 static int libvlc_vlm_init( libvlc_instance_t *p_instance,
 163                             libvlc_exception_t *p_exception )
 164 {
 165     if( !p_instance->libvlc_vlm.p_event_manager )
 166     {
 167         p_instance->libvlc_vlm.p_event_manager = libvlc_event_manager_new( p_instance->libvlc_vlm.p_vlm,
 168                                                                 p_instance, p_exception );
 169         libvlc_event_manager_register_event_type( p_instance->libvlc_vlm.p_event_manager,
 170                                                   libvlc_VlmMediaAdded, NULL );
 171         libvlc_event_manager_register_event_type( p_instance->libvlc_vlm.p_event_manager,
 172                                                   libvlc_VlmMediaRemoved, NULL );
 173         libvlc_event_manager_register_event_type( p_instance->libvlc_vlm.p_event_manager,
 174                                                   libvlc_VlmMediaChanged, NULL );
 175         libvlc_event_manager_register_event_type( p_instance->libvlc_vlm.p_event_manager,
 176                                                   libvlc_VlmMediaInstanceStarted, NULL );
 177         libvlc_event_manager_register_event_type( p_instance->libvlc_vlm.p_event_manager,
 178                                                   libvlc_VlmMediaInstanceStopped, NULL );
 179     }
 180
 181     if( !p_instance->libvlc_vlm.p_vlm )
 182     {
 183         p_instance->libvlc_vlm.p_vlm = vlm_New( p_instance->p_libvlc_int );
 184         if( !p_instance->libvlc_vlm.p_vlm )
 185         {
 186             libvlc_exception_raise( p_exception,
 187                                     "Unable to create VLM." );
 188             return VLC_EGENERIC;
 189         }
 190         var_AddCallback( (vlc_object_t *)p_instance->libvlc_vlm.p_vlm, "intf-event", VlmEvent,
 191                          p_instance->libvlc_vlm.p_event_manager );
 192         p_instance->libvlc_vlm.pf_release = libvlc_vlm_release_internal;
 193     }
 194
 195     return VLC_SUCCESS;
 196 }
 197
 198 void libvlc_vlm_release( libvlc_instance_t *p_instance,
 199                          libvlc_exception_t *p_exception)
 200 {
 201     libvlc_vlm_release_internal( p_instance );
 202 }
 203
 204 #define VLM_RET(p,ret) do {                                     \
 205     if( libvlc_vlm_init( p_instance, p_exception ) ) return ret;\
 206     (p) = p_instance->libvlc_vlm.p_vlm;                                    \
 207   } while(0)
 208 #define VLM(p) VLM_RET(p,)
 209
 210 static vlm_media_instance_t *
 211 libvlc_vlm_get_media_instance( libvlc_instance_t *p_instance,
 212                                const char *psz_name, int i_minstance_idx,
 213                                libvlc_exception_t *p_exception )
 214 {
 215     vlm_t *p_vlm;
 216     vlm_media_instance_t **pp_minstance;
 217     vlm_media_instance_t *p_minstance;
 218     int i_minstance;
 219     int64_t id;
 220
 221     VLM_RET(p_vlm, NULL);
 222
 223     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 224         vlm_Control( p_vlm, VLM_GET_MEDIA_INSTANCES, id, &pp_minstance,
 225                      &i_minstance ) )
 226     {
 227         libvlc_exception_raise( p_exception, "Unable to get %s instances",
 228                                 psz_name );
 229         return NULL;
 230     }
 231     p_minstance = NULL;
 232     if( i_minstance_idx >= 0 && i_minstance_idx < i_minstance )
 233     {
 234         p_minstance = pp_minstance[i_minstance_idx];
 235         TAB_REMOVE( i_minstance, pp_minstance, p_minstance );
 236     }
 237     while( i_minstance > 0 )
 238         vlm_media_instance_Delete( pp_minstance[--i_minstance] );
 239     TAB_CLEAN( i_minstance, pp_minstance );
 240     return p_minstance;
 241 }
 242
 243 void libvlc_vlm_add_broadcast( libvlc_instance_t *p_instance,
 244                                const char *psz_name,
 245                                const char *psz_input,
 246                                const char *psz_output, int i_options,
 247                                const char * const *ppsz_options,
 248                                int b_enabled, int b_loop,
 249                                libvlc_exception_t *p_exception )
 250 {
 251     vlm_t *p_vlm;
 252     vlm_media_t m;
 253     int n;
 254
 255     VLM(p_vlm);
 256
 257     vlm_media_Init( &m );
 258     m.psz_name = strdup( psz_name );
 259     m.b_enabled = b_enabled;
 260     m.b_vod = false;
 261     m.broadcast.b_loop = b_loop;
 262     if( psz_input )
 263         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 264     if( psz_output )
 265         m.psz_output = strdup( psz_output );
 266     for( n = 0; n < i_options; n++ )
 267         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 268
 269     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
 270     vlm_media_Clean( &m );
 271     if( n )
 272         libvlc_exception_raise( p_exception, "Media %s creation failed",
 273                                 psz_name );
 274 }
 275
 276 void libvlc_vlm_add_vod( libvlc_instance_t *p_instance, const char *psz_name,
 277                          const char *psz_input, int i_options,
 278                          const char * const *ppsz_options, int b_enabled,
 279                          const char *psz_mux, libvlc_exception_t *p_exception )
 280 {
 281     vlm_t *p_vlm;
 282     vlm_media_t m;
 283     int n;
 284
 285     VLM(p_vlm);
 286
 287     vlm_media_Init( &m );
 288     m.psz_name = strdup( psz_name );
 289     m.b_enabled = b_enabled;
 290     m.b_vod = true;
 291     m.vod.psz_mux = psz_mux ? strdup( psz_mux ) : NULL;
 292     if( psz_input )
 293         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 294     for( n = 0; n < i_options; n++ )
 295         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 296
 297     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
 298     vlm_media_Clean( &m );
 299     if( n )
 300         libvlc_exception_raise( p_exception, "Media %s creation failed",
 301                                 psz_name );
 302 }
 303
 304 void libvlc_vlm_del_media( libvlc_instance_t *p_instance, const char *psz_name,
 305                            libvlc_exception_t *p_exception )
 306 {
 307     vlm_t *p_vlm;
 308     int64_t id;
 309
 310     VLM(p_vlm);
 311
 312     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 313         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
 314     {
 315         libvlc_exception_raise( p_exception, "Unable to delete %s", psz_name );
 316     }
 317 }
 318
 319 #define VLM_CHANGE(psz_error, code ) do {   \
 320     vlm_media_t *p_media;   \
 321     vlm_t *p_vlm;           \
 322     int64_t id;             \
 323     VLM(p_vlm);             \
 324     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||    \
 325         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) ) {       \
 326         libvlc_exception_raise( p_exception, psz_error, psz_name ); \
 327         return;             \
 328     }                       \
 329     if( !p_media ) goto error;                                      \
 330                             \
 331     code;                   \
 332                             \
 333     if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) ) {         \
 334         vlm_media_Delete( p_media );                                \
 335         goto error;         \
 336     }                       \
 337     vlm_media_Delete( p_media );                                    \
 338     return;                 \
 339   error:                    \
 340     libvlc_exception_raise( p_exception, psz_error, psz_name );\
 341   } while(0)
 342
 343 void libvlc_vlm_set_enabled( libvlc_instance_t *p_instance,
 344                              const char *psz_name, int b_enabled,
 345                              libvlc_exception_t *p_exception )
 346 {
 347 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
 348     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
 349 #undef VLM_CHANGE_CODE
 350 }
 351
 352 void libvlc_vlm_set_loop( libvlc_instance_t *p_instance, const char *psz_name,
 353                           int b_loop, libvlc_exception_t *p_exception )
 354 {
 355 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
 356     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
 357 #undef VLM_CHANGE_CODE
 358 }
 359
 360 void libvlc_vlm_set_mux( libvlc_instance_t *p_instance, const char *psz_name,
 361                          const char *psz_mux, libvlc_exception_t *p_exception )
 362 {
 363 #define VLM_CHANGE_CODE { if( p_media->b_vod ) { \
 364                             free( p_media->vod.psz_mux ); \
 365                             p_media->vod.psz_mux = psz_mux \
 366                                  ? strdup( psz_mux ) : NULL; \
 367                           } }
 368     VLM_CHANGE( "Unable to change %s mux property", VLM_CHANGE_CODE );
 369 #undef VLM_CHANGE_CODE
 370 }
 371
 372 void libvlc_vlm_set_output( libvlc_instance_t *p_instance,
 373                             const char *psz_name, const char *psz_output,
 374                             libvlc_exception_t *p_exception )
 375 {
 376 #define VLM_CHANGE_CODE { free( p_media->psz_output ); \
 377                           p_media->psz_output = strdup( psz_output ); }
 378     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
 379 #undef VLM_CHANGE_CODE
 380 }
 381
 382 void libvlc_vlm_set_input( libvlc_instance_t *p_instance,
 383                            const char *psz_name, const char *psz_input,
 384                            libvlc_exception_t *p_exception )
 385 {
 386 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
 387                             free( p_media->ppsz_input[--p_media->i_input] );\
 388                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
 389                                       strdup(psz_input) ); }
 390     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 391 #undef VLM_CHANGE_CODE
 392 }
 393
 394 void libvlc_vlm_add_input( libvlc_instance_t *p_instance,
 395                            const char *psz_name, const char *psz_input,
 396                            libvlc_exception_t *p_exception )
 397 {
 398 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
 399                           strdup(psz_input) ); }
 400     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 401 #undef VLM_CHANGE_CODE
 402 }
 403
 404 void libvlc_vlm_change_media( libvlc_instance_t *p_instance,
 405                               const char *psz_name, const char *psz_input,
 406                               const char *psz_output, int i_options,
 407                               const char * const *ppsz_options, int b_enabled,
 408                               int b_loop, libvlc_exception_t *p_exception )
 409 {
 410 #define VLM_CHANGE_CODE { int n;        \
 411     p_media->b_enabled = b_enabled;     \
 412     p_media->broadcast.b_loop = b_loop; \
 413     while( p_media->i_input > 0 )       \
 414         free( p_media->ppsz_input[--p_media->i_input] );    \
 415     if( psz_input )                     \
 416         TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); \
 417     free( p_media->psz_output );        \
 418     p_media->psz_output = psz_output ? strdup( psz_output ) : NULL; \
 419     while( p_media->i_option > 0 )     \
 420         free( p_media->ppsz_option[--p_media->i_option] );        \
 421     for( n = 0; n < i_options; n++ )    \
 422         TAB_APPEND( p_media->i_option, p_media->ppsz_option, \
 423                     strdup(ppsz_options[n]) );   \
 424   }
 425     VLM_CHANGE( "Unable to change %s properties", VLM_CHANGE_CODE );
 426 #undef VLM_CHANGE_CODE
 427 }
 428
 429 void libvlc_vlm_play_media( libvlc_instance_t *p_instance,
 430                             const char *psz_name,
 431                             libvlc_exception_t *p_exception )
 432 {
 433     vlm_t *p_vlm;
 434     int64_t id;
 435
 436     VLM(p_vlm);
 437
 438     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 439         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
 440     {
 441         libvlc_exception_raise( p_exception, "Unable to play %s", psz_name );
 442     }
 443 }
 444
 445 void libvlc_vlm_stop_media( libvlc_instance_t *p_instance,
 446                             const char *psz_name,
 447                             libvlc_exception_t *p_exception )
 448 {
 449     vlm_t *p_vlm;
 450     int64_t id;
 451
 452     VLM(p_vlm);
 453
 454     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 455         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
 456     {
 457         libvlc_exception_raise( p_exception, "Unable to stop %s", psz_name );
 458     }
 459 }
 460
 461 void libvlc_vlm_pause_media( libvlc_instance_t *p_instance,
 462                              const char *psz_name,
 463                              libvlc_exception_t *p_exception )
 464 {
 465     vlm_t *p_vlm;
 466     int64_t id;
 467
 468     VLM(p_vlm);
 469
 470     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 471         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
 472     {
 473         libvlc_exception_raise( p_exception, "Unable to pause %s", psz_name );
 474     }
 475 }
 476
 477 void libvlc_vlm_seek_media( libvlc_instance_t *p_instance,
 478                             const char *psz_name, float f_percentage,
 479                             libvlc_exception_t *p_exception )
 480 {
 481     vlm_t *p_vlm;
 482     int64_t id;
 483
 484     VLM(p_vlm);
 485
 486     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 487         vlm_Control( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, NULL,
 488                      f_percentage ) )
 489         libvlc_exception_raise( p_exception, "Unable to seek %s to %f",
 490                                 psz_name, f_percentage );
 491 }
 492
 493 float libvlc_vlm_get_media_instance_position( libvlc_instance_t *p_instance,
 494                                               const char *psz_name,
 495                                               int i_instance,
 496                                               libvlc_exception_t *p_exception )
 497 {
 498     vlm_media_instance_t *p_mi;
 499     float result = -1.;
 500
 501     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 502                                           i_instance, p_exception );
 503     if( p_mi )
 504     {
 505         result = p_mi->d_position;
 506         vlm_media_instance_Delete( p_mi );
 507     }
 508     return result;
 509 }
 510
 511 int libvlc_vlm_get_media_instance_time( libvlc_instance_t *p_instance,
 512                                         const char *psz_name, int i_instance,
 513                                         libvlc_exception_t *p_exception )
 514 {
 515     vlm_media_instance_t *p_mi;
 516     int result = -1;
 517
 518     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 519                                         i_instance, p_exception );
 520     if( p_mi )
 521     {
 522         result = p_mi->i_time;
 523         vlm_media_instance_Delete( p_mi );
 524     }
 525     return result;
 526 }
 527
 528 int libvlc_vlm_get_media_instance_length( libvlc_instance_t *p_instance,
 529                                           const char *psz_name,
 530                                           int i_instance,
 531                                           libvlc_exception_t *p_exception )
 532 {
 533     vlm_media_instance_t *p_mi;
 534     int result = -1;
 535
 536     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 537                                           i_instance, p_exception );
 538     if( p_mi )
 539     {
 540         result = p_mi->i_length;
 541         vlm_media_instance_Delete( p_mi );
 542     }
 543     return result;
 544 }
 545
 546 int libvlc_vlm_get_media_instance_rate( libvlc_instance_t *p_instance,
 547                                         const char *psz_name, int i_instance,
 548                                         libvlc_exception_t *p_exception )
 549 {
 550     vlm_media_instance_t *p_mi;
 551     int result = -1;
 552
 553     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 554                                           i_instance, p_exception );
 555     if( p_mi )
 556     {
 557         result = p_mi->i_rate;
 558         vlm_media_instance_Delete( p_mi );
 559     }
 560     return result;
 561 }
 562
 563 int libvlc_vlm_get_media_instance_title( libvlc_instance_t *p_instance,
 564                                          const char *psz_name, int i_instance,
 565                                          libvlc_exception_t *p_exception )
 566 {
 567     vlm_media_instance_t *p_mi;
 568
 569     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 570                                           i_instance, p_exception );
 571     if( p_mi )
 572         vlm_media_instance_Delete( p_mi );
 573     return p_mi ? 0 : -1;
 574 }
 575
 576 int libvlc_vlm_get_media_instance_chapter( libvlc_instance_t *p_instance,
 577                                            const char *psz_name,
 578                                            int i_instance,
 579                                            libvlc_exception_t *p_exception )
 580 {
 581     vlm_media_instance_t *p_mi;
 582
 583     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 584                                           i_instance, p_exception );
 585     if( p_mi )
 586         vlm_media_instance_Delete( p_mi );
 587     return p_mi ? 0 : -1;
 588 }
 589
 590 int libvlc_vlm_get_media_instance_seekable( libvlc_instance_t *p_instance,
 591                                             const char *psz_name,
 592                                             int i_instance,
 593                                             libvlc_exception_t *p_exception )
 594 {
 595     vlm_media_instance_t *p_mi;
 596
 597     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 598                                           i_instance, p_exception );
 599     if( p_mi )
 600         vlm_media_instance_Delete( p_mi );
 601     return p_mi ? 0 : -1;
 602 }
 603
 604 libvlc_event_manager_t * libvlc_vlm_get_event_manager( libvlc_instance_t *p_instance,
 605                                                        libvlc_exception_t *p_exception )
 606 {
 607     vlm_t *p_vlm;
 608     VLM_RET( p_vlm, NULL);
 609     return p_instance->libvlc_vlm.p_event_manager;
 610 }