lib/vlm.c

   1 /*****************************************************************************
   2  * vlm.c: libvlc new API VLM handling functions
   3  *****************************************************************************
   4  * Copyright (C) 2005 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include <config.h>
  26 #endif
  27
  28 #include <vlc/libvlc.h>
  29 #include <vlc/libvlc_vlm.h>
  30 #include <vlc_es.h>
  31 #include <vlc_input.h>
  32 #include <vlc_vlm.h>
  33 #include <assert.h>
  34
  35 #include "libvlc_internal.h"
  36
  37 /* VLM events callback. Transmit to libvlc */
  38 static int VlmEvent( vlc_object_t *p_this, const char * name,
  39                      vlc_value_t old_val, vlc_value_t newval, void *param )
  40 {
  41     VLC_UNUSED(p_this);
  42     VLC_UNUSED(name);
  43     VLC_UNUSED(old_val);
  44     vlm_event_t *event = (vlm_event_t*)newval.p_address;
  45     libvlc_event_manager_t *p_event_manager = (libvlc_event_manager_t *) param;
  46     libvlc_event_t libvlc_event;
  47
  48     libvlc_event.u.vlm_media_event.psz_instance_name = NULL;
  49     libvlc_event.u.vlm_media_event.psz_media_name = event->psz_name;
  50
  51     switch( event->i_type )
  52     {
  53     case VLM_EVENT_MEDIA_ADDED:
  54         libvlc_event.type = libvlc_VlmMediaAdded;
  55         break;
  56     case VLM_EVENT_MEDIA_REMOVED:
  57         libvlc_event.type = libvlc_VlmMediaRemoved;
  58         break;
  59     case VLM_EVENT_MEDIA_CHANGED:
  60         libvlc_event.type = libvlc_VlmMediaChanged;
  61         break;
  62     case VLM_EVENT_MEDIA_INSTANCE_STARTED:
  63         libvlc_event.type = libvlc_VlmMediaInstanceStarted;
  64         break;
  65     case VLM_EVENT_MEDIA_INSTANCE_STOPPED:
  66         libvlc_event.type = libvlc_VlmMediaInstanceStopped;
  67         break;
  68     case VLM_EVENT_MEDIA_INSTANCE_STATE:
  69         libvlc_event.u.vlm_media_event.psz_instance_name =
  70             event->psz_instance_name;
  71         switch( event->input_state )
  72         {
  73         case INIT_S:
  74             libvlc_event.type = libvlc_VlmMediaInstanceStatusInit;
  75             break;
  76         case OPENING_S:
  77             libvlc_event.type =
  78                 libvlc_VlmMediaInstanceStatusOpening;
  79             break;
  80         case PLAYING_S:
  81             libvlc_event.type =
  82                 libvlc_VlmMediaInstanceStatusPlaying;
  83             break;
  84         case PAUSE_S:
  85             libvlc_event.type = libvlc_VlmMediaInstanceStatusPause;
  86             break;
  87         case END_S:
  88             libvlc_event.type = libvlc_VlmMediaInstanceStatusEnd;
  89             break;
  90         case ERROR_S:
  91             libvlc_event.type = libvlc_VlmMediaInstanceStatusError;
  92             break;
  93         default:
  94             return 0;
  95         }
  96         break;
  97     default:
  98         return 0;
  99     }
 100     libvlc_event_send( p_event_manager, &libvlc_event );
 101     return 0;
 102 }
 103
 104 static void libvlc_vlm_release_internal( libvlc_instance_t *p_instance )
 105 {
 106     vlm_t *p_vlm = p_instance->libvlc_vlm.p_vlm;
 107     if( !p_instance->libvlc_vlm.p_vlm )
 108         return;
 109     /* We need to remove medias in order to receive events */
 110     vlm_Control( p_vlm, VLM_CLEAR_MEDIAS );
 111     vlm_Control( p_vlm, VLM_CLEAR_SCHEDULES );
 112
 113     var_DelCallback( (vlc_object_t *)p_vlm, "intf-event", VlmEvent,
 114                      p_instance->libvlc_vlm.p_event_manager );
 115     p_instance->libvlc_vlm.pf_release = NULL;
 116     libvlc_event_manager_release( p_instance->libvlc_vlm.p_event_manager );
 117     p_instance->libvlc_vlm.p_event_manager = NULL;
 118     vlm_Delete( p_vlm );
 119     p_instance->libvlc_vlm.p_vlm = NULL;
 120     libvlc_release( p_instance );
 121 }
 122
 123 static int libvlc_vlm_init( libvlc_instance_t *p_instance )
 124 {
 125     if( !p_instance->libvlc_vlm.p_event_manager )
 126     {
 127         p_instance->libvlc_vlm.p_event_manager =
 128             libvlc_event_manager_new( p_instance->libvlc_vlm.p_vlm );
 129         if( unlikely(p_instance->libvlc_vlm.p_event_manager == NULL) )
 130             return VLC_ENOMEM;
 131     }
 132
 133     if( !p_instance->libvlc_vlm.p_vlm )
 134     {
 135         p_instance->libvlc_vlm.p_vlm = vlm_New( p_instance->p_libvlc_int );
 136         if( !p_instance->libvlc_vlm.p_vlm )
 137         {
 138             libvlc_printerr( "VLM not supported or out of memory" );
 139             return VLC_EGENERIC;
 140         }
 141         var_AddCallback( (vlc_object_t *)p_instance->libvlc_vlm.p_vlm,
 142                          "intf-event", VlmEvent,
 143                          p_instance->libvlc_vlm.p_event_manager );
 144         p_instance->libvlc_vlm.pf_release = libvlc_vlm_release_internal;
 145         libvlc_retain( p_instance );
 146     }
 147
 148     return VLC_SUCCESS;
 149 }
 150
 151 void libvlc_vlm_release( libvlc_instance_t *p_instance )
 152 {
 153     libvlc_vlm_release_internal( p_instance );
 154 }
 155
 156 #define VLM_RET(p,ret) do { \
 157     if( libvlc_vlm_init( p_instance ) ) \
 158         return (ret); \
 159     (p) = p_instance->libvlc_vlm.p_vlm; \
 160   } while(0)
 161
 162 static vlm_media_instance_t *
 163 libvlc_vlm_get_media_instance( libvlc_instance_t *p_instance,
 164                                const char *psz_name, int i_minstance_idx )
 165 {
 166     vlm_t *p_vlm;
 167     vlm_media_instance_t **pp_minstance;
 168     vlm_media_instance_t *p_minstance;
 169     int i_minstance;
 170     int64_t id;
 171
 172     VLM_RET(p_vlm, NULL);
 173
 174     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 175         vlm_Control( p_vlm, VLM_GET_MEDIA_INSTANCES, id, &pp_minstance,
 176                      &i_minstance ) )
 177     {
 178         libvlc_printerr( "%s: media instances not found", psz_name );
 179         return NULL;
 180     }
 181     p_minstance = NULL;
 182     if( i_minstance_idx >= 0 && i_minstance_idx < i_minstance )
 183     {
 184         p_minstance = pp_minstance[i_minstance_idx];
 185         TAB_REMOVE( i_minstance, pp_minstance, p_minstance );
 186     }
 187     while( i_minstance > 0 )
 188         vlm_media_instance_Delete( pp_minstance[--i_minstance] );
 189     TAB_CLEAN( i_minstance, pp_minstance );
 190     return p_minstance;
 191 }
 192
 193 /* local function to be used in libvlc_vlm_show_media only */
 194 static char* recurse_answer( vlm_message_t *p_answer, const char* psz_delim,
 195                              const int i_list ) {
 196     char* psz_childdelim = NULL;
 197     char* psz_nametag = NULL;
 198     char* psz_response = strdup( "" );
 199     char *psz_tmp;
 200     int i_success = 0;
 201     int i;
 202     vlm_message_t *aw_child, **paw_child;
 203
 204     i_success = asprintf( &psz_childdelim, "%s\t", psz_delim);
 205     if( i_success == -1 )
 206         return psz_response;
 207
 208     paw_child = p_answer->child;
 209     aw_child = *( paw_child );
 210     /* Iterate over children */
 211     for( i = 0; i < p_answer->i_child; i++ )
 212     {
 213         /* Spare comma if it is the last element */
 214         char c_comma = ',';
 215         if( i == (p_answer->i_child - 1) )
 216             c_comma = ' ';
 217
 218         /* Append name of child node, if not in a list */
 219         if( !i_list )
 220         {
 221             i_success = asprintf( &psz_tmp, "%s\"%s\": ",
 222                           psz_response, aw_child->psz_name );
 223             if( i_success == -1 ) break;
 224             free( psz_response );
 225             psz_response = psz_tmp;
 226         }
 227
 228         /* If child node has children, */
 229         if( aw_child->i_child )
 230         {
 231             /* If the parent node is a list (hence the child node is
 232              * inside a list), create a property of its name as if it
 233              * had a name value node
 234              */
 235             free( psz_nametag );
 236             if( i_list )
 237             {
 238                 i_success = asprintf( &psz_nametag, "\"name\": \"%s\",%s",
 239                               aw_child->psz_name, psz_childdelim );
 240                 if( i_success == -1 )
 241                 {
 242                     psz_nametag = NULL;
 243                     break;
 244                 }
 245             }
 246             else
 247             {
 248                 psz_nametag = strdup( "" );
 249             }
 250             /* If the child is a list itself, format it accordingly and
 251              * recurse through the child's children, telling them that
 252              * they are inside a list.
 253              */
 254             if( strcmp( aw_child->psz_name, "media" ) == 0 ||
 255                 strcmp( aw_child->psz_name, "inputs" ) == 0 ||
 256                 strcmp( aw_child->psz_name, "options" ) == 0 )
 257             {
 258                 char *psz_recurse = recurse_answer( aw_child, psz_childdelim, 1 );
 259                 i_success = asprintf( &psz_tmp, "%s[%s%s%s]%c%s",
 260                                       psz_response, psz_childdelim, psz_recurse,
 261                                       psz_delim, c_comma, psz_delim );
 262                 free( psz_recurse );
 263                 if( i_success == -1 ) break;
 264                 free( psz_response );
 265                 psz_response = psz_tmp;
 266             }
 267             /* Not a list, so format the child as a JSON object and
 268              * recurse through the child's children
 269              */
 270             else
 271             {
 272                 char *psz_recurse = recurse_answer( aw_child, psz_childdelim, 0 );
 273                 i_success = asprintf( &psz_tmp, "%s{%s%s%s%s}%c%s",
 274                                       psz_response, psz_childdelim, psz_nametag,
 275                                       psz_recurse, psz_delim, c_comma, psz_delim );
 276                 free( psz_recurse );
 277                 if( i_success == -1 ) break;
 278                 free( psz_response );
 279                 psz_response = psz_tmp;
 280             }
 281         }
 282         /* Otherwise - when no children are present - the node is a
 283          * value node. So print the value string
 284          */
 285         else
 286         {
 287             /* If value is equivalent to NULL, print it as null */
 288             if( aw_child->psz_value == NULL
 289                 || strcmp( aw_child->psz_value, "(null)" ) == 0 )
 290             {
 291                 i_success = asprintf( &psz_tmp, "%snull%c%s",
 292                                       psz_response, c_comma, psz_delim );
 293                 if( i_success == -1 ) break;
 294                 free( psz_response );
 295                 psz_response = psz_tmp;
 296             }
 297             /* Otherwise print the value in quotation marks */
 298             else
 299             {
 300                 i_success = asprintf( &psz_tmp, "%s\"%s\"%c%s",
 301                                       psz_response, aw_child->psz_value,
 302                                       c_comma, psz_delim );
 303                 if( i_success == -1 ) break;
 304                 free( psz_response );
 305                 psz_response = psz_tmp;
 306             }
 307         }
 308         /* getting next child */
 309         paw_child++;
 310         aw_child = *( paw_child );
 311     }
 312     free( psz_nametag );
 313     free( psz_childdelim );
 314     if( i_success == -1 )
 315     {
 316         free( psz_response );
 317         psz_response = strdup( "" );
 318     }
 319     return psz_response;
 320 }
 321
 322 const char* libvlc_vlm_show_media( libvlc_instance_t *p_instance,
 323                                    const char *psz_name )
 324 {
 325     char *psz_message = NULL;
 326     vlm_message_t *answer = NULL;
 327     char *psz_response = NULL;
 328     const char *psz_fmt = NULL;
 329     const char *psz_delimiter = NULL;
 330     int i_list;
 331     vlm_t *p_vlm = NULL;
 332
 333     VLM_RET(p_vlm, NULL);
 334
 335     assert( psz_name );
 336
 337     if( asprintf( &psz_message, "show %s", psz_name ) == -1 )
 338         return NULL;
 339
 340     vlm_ExecuteCommand( p_vlm, psz_message, &answer );
 341     if( answer->psz_value )
 342     {
 343         libvlc_printerr( "Unable to call show %s: %s",
 344                          psz_name, answer->psz_value );
 345     }
 346     else if ( answer->child )
 347     {   /* in case everything was requested  */
 348         if ( strcmp( psz_name, "" ) == 0 )
 349         {
 350             psz_fmt = "{\n\t%s\n}\n";
 351             psz_delimiter = "\n\t";
 352             i_list = 0;
 353         }
 354         else
 355         {
 356             psz_fmt = "%s\n";
 357             psz_delimiter = "\n";
 358             i_list = 1;
 359         }
 360         char *psz_tmp = recurse_answer( answer, psz_delimiter, i_list );
 361         if( asprintf( &psz_response, psz_fmt, psz_tmp ) == -1 )
 362         {
 363             libvlc_printerr( "Out of memory" );
 364             psz_response = NULL;
 365         }
 366         free( psz_tmp );
 367     }
 368     vlm_MessageDelete( answer );
 369     free( psz_message );
 370     return( psz_response );
 371 }
 372
 373
 374 int libvlc_vlm_add_broadcast( libvlc_instance_t *p_instance,
 375                               const char *psz_name,
 376                               const char *psz_input,
 377                               const char *psz_output, int i_options,
 378                               const char * const *ppsz_options,
 379                               int b_enabled, int b_loop )
 380 {
 381     vlm_t *p_vlm;
 382     vlm_media_t m;
 383     int n;
 384
 385     VLM_RET(p_vlm, -1);
 386
 387     vlm_media_Init( &m );
 388     m.psz_name = strdup( psz_name );
 389     m.b_enabled = b_enabled;
 390     m.b_vod = false;
 391     m.broadcast.b_loop = b_loop;
 392     if( psz_input )
 393         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 394     if( psz_output )
 395         m.psz_output = strdup( psz_output );
 396     for( n = 0; n < i_options; n++ )
 397         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 398
 399     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
 400     vlm_media_Clean( &m );
 401     if( n )
 402     {
 403         libvlc_printerr( "Media %s creation failed", psz_name );
 404         return -1;
 405     }
 406     return 0;
 407 }
 408
 409 int libvlc_vlm_add_vod( libvlc_instance_t *p_instance, const char *psz_name,
 410                         const char *psz_input, int i_options,
 411                         const char * const *ppsz_options, int b_enabled,
 412                         const char *psz_mux )
 413 {
 414     vlm_t *p_vlm;
 415     vlm_media_t m;
 416     int n;
 417
 418     VLM_RET(p_vlm, -1);
 419
 420     vlm_media_Init( &m );
 421     m.psz_name = strdup( psz_name );
 422     m.b_enabled = b_enabled;
 423     m.b_vod = true;
 424     m.vod.psz_mux = psz_mux ? strdup( psz_mux ) : NULL;
 425     if( psz_input )
 426         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 427     for( n = 0; n < i_options; n++ )
 428         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 429
 430     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
 431     vlm_media_Clean( &m );
 432     if( n )
 433     {
 434         libvlc_printerr( "Media %s creation failed", psz_name );
 435         return -1;
 436     }
 437     return 0;
 438 }
 439
 440 int libvlc_vlm_del_media( libvlc_instance_t *p_instance, const char *psz_name )
 441 {
 442     vlm_t *p_vlm;
 443     int64_t id;
 444
 445     VLM_RET(p_vlm, -1);
 446
 447     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 448         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
 449     {
 450         libvlc_printerr( "Unable to delete %s", psz_name );
 451         return -1;
 452     }
 453     return 0;
 454 }
 455
 456 static vlm_media_t *get_media( libvlc_instance_t *p_instance,
 457                                vlm_t **restrict pp_vlm, const char *name )
 458 {
 459     vlm_media_t *p_media;
 460     vlm_t *p_vlm;
 461     int64_t id;
 462
 463     VLM_RET(p_vlm, NULL);
 464     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, name, &id ) ||
 465         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) )
 466         return NULL;
 467     *pp_vlm = p_vlm;
 468     return p_media;
 469 }
 470
 471 #define VLM_CHANGE(psz_error, code ) do {   \
 472     vlm_t *p_vlm;           \
 473     vlm_media_t *p_media = get_media( p_instance, &p_vlm, psz_name ); \
 474     if( p_media != NULL ) { \
 475         code;               \
 476         if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) )       \
 477             p_vlm = NULL;                                           \
 478         vlm_media_Delete( p_media );                                \
 479         if( p_vlm != NULL ) \
 480             return 0;       \
 481     }                       \
 482     libvlc_printerr( psz_error, psz_name );                         \
 483     return -1;              \
 484   } while(0)
 485
 486 int libvlc_vlm_set_enabled( libvlc_instance_t *p_instance,
 487                             const char *psz_name, int b_enabled )
 488 {
 489 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
 490     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
 491 #undef VLM_CHANGE_CODE
 492 }
 493
 494 int libvlc_vlm_set_loop( libvlc_instance_t *p_instance, const char *psz_name,
 495                          int b_loop )
 496 {
 497 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
 498     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
 499 #undef VLM_CHANGE_CODE
 500 }
 501
 502 int libvlc_vlm_set_mux( libvlc_instance_t *p_instance, const char *psz_name,
 503                         const char *psz_mux )
 504 {
 505 #define VLM_CHANGE_CODE { if( p_media->b_vod ) { \
 506                             free( p_media->vod.psz_mux ); \
 507                             p_media->vod.psz_mux = psz_mux \
 508                                  ? strdup( psz_mux ) : NULL; \
 509                           } }
 510     VLM_CHANGE( "Unable to change %s mux property", VLM_CHANGE_CODE );
 511 #undef VLM_CHANGE_CODE
 512 }
 513
 514 int libvlc_vlm_set_output( libvlc_instance_t *p_instance,
 515                            const char *psz_name, const char *psz_output )
 516 {
 517 #define VLM_CHANGE_CODE { free( p_media->psz_output ); \
 518                           p_media->psz_output = strdup( psz_output ); }
 519     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
 520 #undef VLM_CHANGE_CODE
 521 }
 522
 523 int libvlc_vlm_set_input( libvlc_instance_t *p_instance,
 524                           const char *psz_name, const char *psz_input )
 525 {
 526 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
 527                             free( p_media->ppsz_input[--p_media->i_input] );\
 528                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
 529                                       strdup(psz_input) ); }
 530     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 531 #undef VLM_CHANGE_CODE
 532 }
 533
 534 int libvlc_vlm_add_input( libvlc_instance_t *p_instance,
 535                           const char *psz_name, const char *psz_input )
 536 {
 537 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
 538                           strdup(psz_input) ); }
 539     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 540 #undef VLM_CHANGE_CODE
 541 }
 542
 543 int libvlc_vlm_change_media( libvlc_instance_t *p_instance,
 544                              const char *psz_name, const char *psz_input,
 545                              const char *psz_output, int i_options,
 546                              const char * const *ppsz_options, int b_enabled,
 547                              int b_loop )
 548 {
 549 #define VLM_CHANGE_CODE { int n;        \
 550     p_media->b_enabled = b_enabled;     \
 551     p_media->broadcast.b_loop = b_loop; \
 552     while( p_media->i_input > 0 )       \
 553         free( p_media->ppsz_input[--p_media->i_input] );    \
 554     if( psz_input )                     \
 555         TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); \
 556     free( p_media->psz_output );        \
 557     p_media->psz_output = psz_output ? strdup( psz_output ) : NULL; \
 558     while( p_media->i_option > 0 )     \
 559         free( p_media->ppsz_option[--p_media->i_option] );        \
 560     for( n = 0; n < i_options; n++ )    \
 561         TAB_APPEND( p_media->i_option, p_media->ppsz_option, \
 562                     strdup(ppsz_options[n]) );   \
 563   }
 564     VLM_CHANGE( "Unable to change %s properties", VLM_CHANGE_CODE );
 565 #undef VLM_CHANGE_CODE
 566 }
 567
 568 int libvlc_vlm_play_media( libvlc_instance_t *p_instance,
 569                            const char *psz_name )
 570 {
 571     vlm_t *p_vlm;
 572     int64_t id;
 573
 574     VLM_RET(p_vlm, -1);
 575
 576     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 577         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
 578     {
 579         libvlc_printerr( "Unable to play %s", psz_name );
 580         return -1;
 581     }
 582     return 0;
 583 }
 584
 585 int libvlc_vlm_stop_media( libvlc_instance_t *p_instance,
 586                            const char *psz_name )
 587 {
 588     vlm_t *p_vlm;
 589     int64_t id;
 590
 591     VLM_RET(p_vlm, -1);
 592
 593     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 594         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
 595     {
 596         libvlc_printerr( "Unable to stop %s", psz_name );
 597         return -1;
 598     }
 599     return 0;
 600 }
 601
 602 int libvlc_vlm_pause_media( libvlc_instance_t *p_instance,
 603                             const char *psz_name )
 604 {
 605     vlm_t *p_vlm;
 606     int64_t id;
 607
 608     VLM_RET(p_vlm, -1);
 609
 610     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 611         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
 612     {
 613         libvlc_printerr( "Unable to pause %s", psz_name );
 614         return -1;
 615     }
 616     return 0;
 617 }
 618
 619 int libvlc_vlm_seek_media( libvlc_instance_t *p_instance,
 620                            const char *psz_name, float f_percentage )
 621 {
 622     vlm_t *p_vlm;
 623     int64_t id;
 624
 625     VLM_RET(p_vlm, -1);
 626
 627     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 628         vlm_Control( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, NULL,
 629                      f_percentage ) )
 630     {
 631         libvlc_printerr( "Unable to seek %s to %f%%", psz_name, f_percentage );
 632         return -1;
 633     }
 634     return 0;
 635 }
 636
 637 float libvlc_vlm_get_media_instance_position( libvlc_instance_t *p_instance,
 638                                               const char *psz_name,
 639                                               int i_instance )
 640 {
 641     vlm_media_instance_t *p_mi;
 642     float result = -1.;
 643
 644     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 645     if( p_mi )
 646     {
 647         result = p_mi->d_position;
 648         vlm_media_instance_Delete( p_mi );
 649     }
 650     return result;
 651 }
 652
 653 int libvlc_vlm_get_media_instance_time( libvlc_instance_t *p_instance,
 654                                         const char *psz_name, int i_instance )
 655 {
 656     vlm_media_instance_t *p_mi;
 657     int result = -1;
 658
 659     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 660     if( p_mi )
 661     {
 662         result = p_mi->i_time;
 663         vlm_media_instance_Delete( p_mi );
 664     }
 665     return result;
 666 }
 667
 668 int libvlc_vlm_get_media_instance_length( libvlc_instance_t *p_instance,
 669                                           const char *psz_name,
 670                                           int i_instance )
 671 {
 672     vlm_media_instance_t *p_mi;
 673     int result = -1;
 674
 675     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 676     if( p_mi )
 677     {
 678         result = p_mi->i_length;
 679         vlm_media_instance_Delete( p_mi );
 680     }
 681     return result;
 682 }
 683
 684 int libvlc_vlm_get_media_instance_rate( libvlc_instance_t *p_instance,
 685                                         const char *psz_name, int i_instance )
 686 {
 687     vlm_media_instance_t *p_mi;
 688     int result = -1;
 689
 690     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 691     if( p_mi )
 692     {
 693         result = p_mi->i_rate;
 694         vlm_media_instance_Delete( p_mi );
 695     }
 696     return result;
 697 }
 698
 699 #if 0
 700 int libvlc_vlm_get_media_instance_title( libvlc_instance_t *p_instance,
 701                                          const char *psz_name, int i_instance )
 702 {
 703     vlm_media_instance_t *p_mi;
 704
 705     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 706     if( p_mi )
 707         vlm_media_instance_Delete( p_mi );
 708     return p_mi ? 0 : -1;
 709 }
 710
 711 int libvlc_vlm_get_media_instance_chapter( libvlc_instance_t *p_instance,
 712                                            const char *psz_name,
 713                                            int i_instance )
 714 {
 715     vlm_media_instance_t *p_mi;
 716
 717     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 718                                           i_instance );
 719     if( p_mi )
 720         vlm_media_instance_Delete( p_mi );
 721     return p_mi ? 0 : -1;
 722 }
 723
 724 int libvlc_vlm_get_media_instance_seekable( libvlc_instance_t *p_instance,
 725                                             const char *psz_name,
 726                                             int i_instance )
 727 {
 728     vlm_media_instance_t *p_mi;
 729
 730     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 731     if( p_mi )
 732         vlm_media_instance_Delete( p_mi );
 733     return p_mi ? 0 : -1;
 734 }
 735 #endif
 736
 737 libvlc_event_manager_t *
 738 libvlc_vlm_get_event_manager( libvlc_instance_t *p_instance )
 739 {
 740     if( libvlc_vlm_init( p_instance ) )
 741         return NULL;
 742     return p_instance->libvlc_vlm.p_event_manager;
 743 }