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 typedef struct libvlc_vlm_t
  38 {
  39     libvlc_event_manager_t  event_manager;
  40     vlm_t                  *p_vlm;
  41 } libvlc_vlm_t;
  42
  43 /* VLM events callback. Transmit to libvlc */
  44 static int VlmEvent( vlc_object_t *p_this, const char * name,
  45                      vlc_value_t old_val, vlc_value_t newval, void *param )
  46 {
  47     VLC_UNUSED(p_this);
  48     VLC_UNUSED(name);
  49     VLC_UNUSED(old_val);
  50     vlm_event_t *event = (vlm_event_t*)newval.p_address;
  51     libvlc_event_manager_t *p_event_manager = (libvlc_event_manager_t *) param;
  52     libvlc_event_t libvlc_event;
  53
  54     libvlc_event.u.vlm_media_event.psz_instance_name = NULL;
  55     libvlc_event.u.vlm_media_event.psz_media_name = event->psz_name;
  56
  57     switch( event->i_type )
  58     {
  59     case VLM_EVENT_MEDIA_ADDED:
  60         libvlc_event.type = libvlc_VlmMediaAdded;
  61         break;
  62     case VLM_EVENT_MEDIA_REMOVED:
  63         libvlc_event.type = libvlc_VlmMediaRemoved;
  64         break;
  65     case VLM_EVENT_MEDIA_CHANGED:
  66         libvlc_event.type = libvlc_VlmMediaChanged;
  67         break;
  68     case VLM_EVENT_MEDIA_INSTANCE_STARTED:
  69         libvlc_event.type = libvlc_VlmMediaInstanceStarted;
  70         break;
  71     case VLM_EVENT_MEDIA_INSTANCE_STOPPED:
  72         libvlc_event.type = libvlc_VlmMediaInstanceStopped;
  73         break;
  74     case VLM_EVENT_MEDIA_INSTANCE_STATE:
  75         libvlc_event.u.vlm_media_event.psz_instance_name =
  76             event->psz_instance_name;
  77         switch( event->input_state )
  78         {
  79         case INIT_S:
  80             libvlc_event.type = libvlc_VlmMediaInstanceStatusInit;
  81             break;
  82         case OPENING_S:
  83             libvlc_event.type =
  84                 libvlc_VlmMediaInstanceStatusOpening;
  85             break;
  86         case PLAYING_S:
  87             libvlc_event.type =
  88                 libvlc_VlmMediaInstanceStatusPlaying;
  89             break;
  90         case PAUSE_S:
  91             libvlc_event.type = libvlc_VlmMediaInstanceStatusPause;
  92             break;
  93         case END_S:
  94             libvlc_event.type = libvlc_VlmMediaInstanceStatusEnd;
  95             break;
  96         case ERROR_S:
  97             libvlc_event.type = libvlc_VlmMediaInstanceStatusError;
  98             break;
  99         default:
 100             return 0;
 101         }
 102         break;
 103     default:
 104         return 0;
 105     }
 106     libvlc_event_send( p_event_manager, &libvlc_event );
 107     return 0;
 108 }
 109
 110 void libvlc_vlm_release( libvlc_instance_t *p_instance )
 111 {
 112     vlm_t *p_vlm = p_instance->vlm->p_vlm;
 113     if( !p_vlm )
 114         return;
 115     /* We need to remove medias in order to receive events */
 116     vlm_Control( p_vlm, VLM_CLEAR_MEDIAS );
 117     vlm_Control( p_vlm, VLM_CLEAR_SCHEDULES );
 118
 119     var_DelCallback( (vlc_object_t *)p_vlm, "intf-event", VlmEvent,
 120                      &p_instance->vlm->event_manager );
 121     libvlc_event_manager_destroy( &p_instance->vlm->event_manager );
 122     vlm_Delete( p_vlm );
 123     free( p_instance->vlm );
 124     p_instance->vlm = NULL;
 125     libvlc_release( p_instance );
 126 }
 127
 128 static int libvlc_vlm_init( libvlc_instance_t *p_instance )
 129 {
 130     if( !p_instance->vlm )
 131     {
 132         p_instance->vlm = malloc( sizeof(*p_instance->vlm) );
 133         if( p_instance->vlm == NULL )
 134             return VLC_ENOMEM;
 135         p_instance->vlm->p_vlm = NULL;
 136         libvlc_event_manager_init( &p_instance->vlm->event_manager,
 137                                    p_instance->vlm );
 138     }
 139
 140     if( !p_instance->vlm->p_vlm )
 141     {
 142         p_instance->vlm->p_vlm = vlm_New( p_instance->p_libvlc_int );
 143         if( !p_instance->vlm->p_vlm )
 144         {
 145             libvlc_printerr( "VLM not supported or out of memory" );
 146             return VLC_EGENERIC;
 147         }
 148         var_AddCallback( (vlc_object_t *)p_instance->vlm->p_vlm,
 149                          "intf-event", VlmEvent,
 150                          &p_instance->vlm->event_manager );
 151         libvlc_retain( p_instance );
 152     }
 153
 154     return VLC_SUCCESS;
 155 }
 156
 157 #define VLM_RET(p,ret) do { \
 158     if( libvlc_vlm_init( p_instance ) ) \
 159         return (ret); \
 160     (p) = p_instance->vlm->p_vlm; \
 161   } while(0)
 162
 163 static vlm_media_instance_t *
 164 libvlc_vlm_get_media_instance( libvlc_instance_t *p_instance,
 165                                const char *psz_name, int i_minstance_idx )
 166 {
 167     vlm_t *p_vlm;
 168     vlm_media_instance_t **pp_minstance;
 169     vlm_media_instance_t *p_minstance;
 170     int i_minstance;
 171     int64_t id;
 172
 173     VLM_RET(p_vlm, NULL);
 174
 175     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 176         vlm_Control( p_vlm, VLM_GET_MEDIA_INSTANCES, id, &pp_minstance,
 177                      &i_minstance ) )
 178     {
 179         libvlc_printerr( "%s: media instances not found", psz_name );
 180         return NULL;
 181     }
 182     p_minstance = NULL;
 183     if( i_minstance_idx >= 0 && i_minstance_idx < i_minstance )
 184     {
 185         p_minstance = pp_minstance[i_minstance_idx];
 186         TAB_REMOVE( i_minstance, pp_minstance, p_minstance );
 187     }
 188     while( i_minstance > 0 )
 189         vlm_media_instance_Delete( pp_minstance[--i_minstance] );
 190     TAB_CLEAN( i_minstance, pp_minstance );
 191     return p_minstance;
 192 }
 193
 194 /* local function to be used in libvlc_vlm_show_media only */
 195 static char* recurse_answer( vlm_message_t *p_answer, const char* psz_delim,
 196                              const int i_list ) {
 197     char* psz_childdelim = NULL;
 198     char* psz_nametag = NULL;
 199     char* psz_response = strdup( "" );
 200     int i_success = 0;
 201
 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( int i = 0; i < p_answer->i_child; i++ )
 212     {
 213         char *psz_tmp;
 214         /* Spare comma if it is the last element */
 215         char c_comma = ',';
 216         if( i == (p_answer->i_child - 1) )
 217             c_comma = ' ';
 218
 219         /* Append name of child node, if not in a list */
 220         if( !i_list )
 221         {
 222             i_success = asprintf( &psz_tmp, "%s\"%s\": ",
 223                           psz_response, aw_child->psz_name );
 224             if( i_success == -1 ) break;
 225             free( psz_response );
 226             psz_response = psz_tmp;
 227         }
 228
 229         /* If child node has children, */
 230         if( aw_child->i_child )
 231         {
 232             /* If the parent node is a list (hence the child node is
 233              * inside a list), create a property of its name as if it
 234              * had a name value node
 235              */
 236             free( psz_nametag );
 237             if( i_list )
 238             {
 239                 i_success = asprintf( &psz_nametag, "\"name\": \"%s\",%s",
 240                               aw_child->psz_name, psz_childdelim );
 241                 if( i_success == -1 )
 242                 {
 243                     psz_nametag = NULL;
 244                     break;
 245                 }
 246             }
 247             else
 248             {
 249                 psz_nametag = strdup( "" );
 250             }
 251             /* If the child is a list itself, format it accordingly and
 252              * recurse through the child's children, telling them that
 253              * they are inside a list.
 254              */
 255             if( strcmp( aw_child->psz_name, "media" ) == 0 ||
 256                 strcmp( aw_child->psz_name, "inputs" ) == 0 ||
 257                 strcmp( aw_child->psz_name, "options" ) == 0 )
 258             {
 259                 char *psz_recurse = recurse_answer( aw_child, psz_childdelim, 1 );
 260                 i_success = asprintf( &psz_tmp, "%s[%s%s%s]%c%s",
 261                                       psz_response, psz_childdelim, psz_recurse,
 262                                       psz_delim, c_comma, psz_delim );
 263                 free( psz_recurse );
 264                 if( i_success == -1 ) break;
 265                 free( psz_response );
 266                 psz_response = psz_tmp;
 267             }
 268             /* Not a list, so format the child as a JSON object and
 269              * recurse through the child's children
 270              */
 271             else
 272             {
 273                 char *psz_recurse = recurse_answer( aw_child, psz_childdelim, 0 );
 274                 i_success = asprintf( &psz_tmp, "%s{%s%s%s%s}%c%s",
 275                                       psz_response, psz_childdelim, psz_nametag,
 276                                       psz_recurse, psz_delim, c_comma, psz_delim );
 277                 free( psz_recurse );
 278                 if( i_success == -1 ) break;
 279                 free( psz_response );
 280                 psz_response = psz_tmp;
 281             }
 282         }
 283         /* Otherwise - when no children are present - the node is a
 284          * value node. So print the value string
 285          */
 286         else
 287         {
 288             /* If value is equivalent to NULL, print it as null */
 289             if( aw_child->psz_value == NULL
 290                 || strcmp( aw_child->psz_value, "(null)" ) == 0 )
 291             {
 292                 i_success = asprintf( &psz_tmp, "%snull%c%s",
 293                                       psz_response, c_comma, psz_delim );
 294                 if( i_success == -1 ) break;
 295                 free( psz_response );
 296                 psz_response = psz_tmp;
 297             }
 298             /* Otherwise print the value in quotation marks */
 299             else
 300             {
 301                 i_success = asprintf( &psz_tmp, "%s\"%s\"%c%s",
 302                                       psz_response, aw_child->psz_value,
 303                                       c_comma, psz_delim );
 304                 if( i_success == -1 ) break;
 305                 free( psz_response );
 306                 psz_response = psz_tmp;
 307             }
 308         }
 309         /* getting next child */
 310         paw_child++;
 311         aw_child = *( paw_child );
 312     }
 313     free( psz_nametag );
 314     free( psz_childdelim );
 315     if( i_success == -1 )
 316     {
 317         free( psz_response );
 318         psz_response = strdup( "" );
 319     }
 320     return psz_response;
 321 }
 322
 323 const char* libvlc_vlm_show_media( libvlc_instance_t *p_instance,
 324                                    const char *psz_name )
 325 {
 326     char *psz_message = NULL;
 327     vlm_message_t *answer = NULL;
 328     char *psz_response = NULL;
 329     const char *psz_fmt = NULL;
 330     const char *psz_delimiter = NULL;
 331     int i_list;
 332     vlm_t *p_vlm = NULL;
 333
 334     VLM_RET(p_vlm, NULL);
 335
 336     assert( psz_name );
 337
 338     if( asprintf( &psz_message, "show %s", psz_name ) == -1 )
 339         return NULL;
 340
 341     vlm_ExecuteCommand( p_vlm, psz_message, &answer );
 342     if( answer->psz_value )
 343     {
 344         libvlc_printerr( "Unable to call show %s: %s",
 345                          psz_name, answer->psz_value );
 346     }
 347     else if ( answer->child )
 348     {   /* in case everything was requested  */
 349         if ( strcmp( psz_name, "" ) == 0 )
 350         {
 351             psz_fmt = "{\n\t%s\n}\n";
 352             psz_delimiter = "\n\t";
 353             i_list = 0;
 354         }
 355         else
 356         {
 357             psz_fmt = "%s\n";
 358             psz_delimiter = "\n";
 359             i_list = 1;
 360         }
 361         char *psz_tmp = recurse_answer( answer, psz_delimiter, i_list );
 362         if( asprintf( &psz_response, psz_fmt, psz_tmp ) == -1 )
 363         {
 364             libvlc_printerr( "Out of memory" );
 365             psz_response = NULL;
 366         }
 367         free( psz_tmp );
 368     }
 369     vlm_MessageDelete( answer );
 370     free( psz_message );
 371     return( psz_response );
 372 }
 373
 374
 375 int libvlc_vlm_add_broadcast( libvlc_instance_t *p_instance,
 376                               const char *psz_name,
 377                               const char *psz_input,
 378                               const char *psz_output, int i_options,
 379                               const char * const *ppsz_options,
 380                               int b_enabled, int b_loop )
 381 {
 382     vlm_t *p_vlm;
 383     vlm_media_t m;
 384     int n;
 385
 386     VLM_RET(p_vlm, -1);
 387
 388     vlm_media_Init( &m );
 389     m.psz_name = strdup( psz_name );
 390     m.b_enabled = b_enabled;
 391     m.b_vod = false;
 392     m.broadcast.b_loop = b_loop;
 393     if( psz_input )
 394         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 395     if( psz_output )
 396         m.psz_output = strdup( psz_output );
 397     for( n = 0; n < i_options; n++ )
 398         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 399
 400     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
 401     vlm_media_Clean( &m );
 402     if( n )
 403     {
 404         libvlc_printerr( "Media %s creation failed", psz_name );
 405         return -1;
 406     }
 407     return 0;
 408 }
 409
 410 int libvlc_vlm_add_vod( libvlc_instance_t *p_instance, const char *psz_name,
 411                         const char *psz_input, int i_options,
 412                         const char * const *ppsz_options, int b_enabled,
 413                         const char *psz_mux )
 414 {
 415     vlm_t *p_vlm;
 416     vlm_media_t m;
 417     int n;
 418
 419     VLM_RET(p_vlm, -1);
 420
 421     vlm_media_Init( &m );
 422     m.psz_name = strdup( psz_name );
 423     m.b_enabled = b_enabled;
 424     m.b_vod = true;
 425     m.vod.psz_mux = psz_mux ? strdup( psz_mux ) : NULL;
 426     if( psz_input )
 427         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 428     for( n = 0; n < i_options; n++ )
 429         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 430
 431     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
 432     vlm_media_Clean( &m );
 433     if( n )
 434     {
 435         libvlc_printerr( "Media %s creation failed", psz_name );
 436         return -1;
 437     }
 438     return 0;
 439 }
 440
 441 int libvlc_vlm_del_media( libvlc_instance_t *p_instance, const char *psz_name )
 442 {
 443     vlm_t *p_vlm;
 444     int64_t id;
 445
 446     VLM_RET(p_vlm, -1);
 447
 448     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 449         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
 450     {
 451         libvlc_printerr( "Unable to delete %s", psz_name );
 452         return -1;
 453     }
 454     return 0;
 455 }
 456
 457 static vlm_media_t *get_media( libvlc_instance_t *p_instance,
 458                                vlm_t **restrict pp_vlm, const char *name )
 459 {
 460     vlm_media_t *p_media;
 461     vlm_t *p_vlm;
 462     int64_t id;
 463
 464     VLM_RET(p_vlm, NULL);
 465     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, name, &id ) ||
 466         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) )
 467         return NULL;
 468     *pp_vlm = p_vlm;
 469     return p_media;
 470 }
 471
 472 #define VLM_CHANGE(psz_error, code ) do {   \
 473     vlm_t *p_vlm;           \
 474     vlm_media_t *p_media = get_media( p_instance, &p_vlm, psz_name ); \
 475     if( p_media != NULL ) { \
 476         code;               \
 477         if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) )       \
 478             p_vlm = NULL;                                           \
 479         vlm_media_Delete( p_media );                                \
 480         if( p_vlm != NULL ) \
 481             return 0;       \
 482     }                       \
 483     libvlc_printerr( psz_error, psz_name );                         \
 484     return -1;              \
 485   } while(0)
 486
 487 int libvlc_vlm_set_enabled( libvlc_instance_t *p_instance,
 488                             const char *psz_name, int b_enabled )
 489 {
 490 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
 491     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
 492 #undef VLM_CHANGE_CODE
 493 }
 494
 495 int libvlc_vlm_set_loop( libvlc_instance_t *p_instance, const char *psz_name,
 496                          int b_loop )
 497 {
 498 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
 499     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
 500 #undef VLM_CHANGE_CODE
 501 }
 502
 503 int libvlc_vlm_set_mux( libvlc_instance_t *p_instance, const char *psz_name,
 504                         const char *psz_mux )
 505 {
 506 #define VLM_CHANGE_CODE { if( p_media->b_vod ) { \
 507                             free( p_media->vod.psz_mux ); \
 508                             p_media->vod.psz_mux = psz_mux \
 509                                  ? strdup( psz_mux ) : NULL; \
 510                           } }
 511     VLM_CHANGE( "Unable to change %s mux property", VLM_CHANGE_CODE );
 512 #undef VLM_CHANGE_CODE
 513 }
 514
 515 int libvlc_vlm_set_output( libvlc_instance_t *p_instance,
 516                            const char *psz_name, const char *psz_output )
 517 {
 518 #define VLM_CHANGE_CODE { free( p_media->psz_output ); \
 519                           p_media->psz_output = strdup( psz_output ); }
 520     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
 521 #undef VLM_CHANGE_CODE
 522 }
 523
 524 int libvlc_vlm_set_input( libvlc_instance_t *p_instance,
 525                           const char *psz_name, const char *psz_input )
 526 {
 527 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
 528                             free( p_media->ppsz_input[--p_media->i_input] );\
 529                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
 530                                       strdup(psz_input) ); }
 531     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 532 #undef VLM_CHANGE_CODE
 533 }
 534
 535 int libvlc_vlm_add_input( libvlc_instance_t *p_instance,
 536                           const char *psz_name, const char *psz_input )
 537 {
 538 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
 539                           strdup(psz_input) ); }
 540     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 541 #undef VLM_CHANGE_CODE
 542 }
 543
 544 int libvlc_vlm_change_media( libvlc_instance_t *p_instance,
 545                              const char *psz_name, const char *psz_input,
 546                              const char *psz_output, int i_options,
 547                              const char * const *ppsz_options, int b_enabled,
 548                              int b_loop )
 549 {
 550 #define VLM_CHANGE_CODE { int n;        \
 551     p_media->b_enabled = b_enabled;     \
 552     p_media->broadcast.b_loop = b_loop; \
 553     while( p_media->i_input > 0 )       \
 554         free( p_media->ppsz_input[--p_media->i_input] );    \
 555     if( psz_input )                     \
 556         TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); \
 557     free( p_media->psz_output );        \
 558     p_media->psz_output = psz_output ? strdup( psz_output ) : NULL; \
 559     while( p_media->i_option > 0 )     \
 560         free( p_media->ppsz_option[--p_media->i_option] );        \
 561     for( n = 0; n < i_options; n++ )    \
 562         TAB_APPEND( p_media->i_option, p_media->ppsz_option, \
 563                     strdup(ppsz_options[n]) );   \
 564   }
 565     VLM_CHANGE( "Unable to change %s properties", VLM_CHANGE_CODE );
 566 #undef VLM_CHANGE_CODE
 567 }
 568
 569 int libvlc_vlm_play_media( libvlc_instance_t *p_instance,
 570                            const char *psz_name )
 571 {
 572     vlm_t *p_vlm;
 573     int64_t id;
 574
 575     VLM_RET(p_vlm, -1);
 576
 577     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 578         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
 579     {
 580         libvlc_printerr( "Unable to play %s", psz_name );
 581         return -1;
 582     }
 583     return 0;
 584 }
 585
 586 int libvlc_vlm_stop_media( libvlc_instance_t *p_instance,
 587                            const char *psz_name )
 588 {
 589     vlm_t *p_vlm;
 590     int64_t id;
 591
 592     VLM_RET(p_vlm, -1);
 593
 594     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 595         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
 596     {
 597         libvlc_printerr( "Unable to stop %s", psz_name );
 598         return -1;
 599     }
 600     return 0;
 601 }
 602
 603 int libvlc_vlm_pause_media( libvlc_instance_t *p_instance,
 604                             const char *psz_name )
 605 {
 606     vlm_t *p_vlm;
 607     int64_t id;
 608
 609     VLM_RET(p_vlm, -1);
 610
 611     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 612         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
 613     {
 614         libvlc_printerr( "Unable to pause %s", psz_name );
 615         return -1;
 616     }
 617     return 0;
 618 }
 619
 620 int libvlc_vlm_seek_media( libvlc_instance_t *p_instance,
 621                            const char *psz_name, float f_percentage )
 622 {
 623     vlm_t *p_vlm;
 624     int64_t id;
 625
 626     VLM_RET(p_vlm, -1);
 627
 628     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 629         vlm_Control( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, NULL,
 630                      f_percentage ) )
 631     {
 632         libvlc_printerr( "Unable to seek %s to %f%%", psz_name, f_percentage );
 633         return -1;
 634     }
 635     return 0;
 636 }
 637
 638 float libvlc_vlm_get_media_instance_position( libvlc_instance_t *p_instance,
 639                                               const char *psz_name,
 640                                               int i_instance )
 641 {
 642     vlm_media_instance_t *p_mi;
 643     float result = -1.;
 644
 645     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 646     if( p_mi )
 647     {
 648         result = p_mi->d_position;
 649         vlm_media_instance_Delete( p_mi );
 650     }
 651     return result;
 652 }
 653
 654 int libvlc_vlm_get_media_instance_time( libvlc_instance_t *p_instance,
 655                                         const char *psz_name, int i_instance )
 656 {
 657     vlm_media_instance_t *p_mi;
 658     int result = -1;
 659
 660     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 661     if( p_mi )
 662     {
 663         result = p_mi->i_time;
 664         vlm_media_instance_Delete( p_mi );
 665     }
 666     return result;
 667 }
 668
 669 int libvlc_vlm_get_media_instance_length( libvlc_instance_t *p_instance,
 670                                           const char *psz_name,
 671                                           int i_instance )
 672 {
 673     vlm_media_instance_t *p_mi;
 674     int result = -1;
 675
 676     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 677     if( p_mi )
 678     {
 679         result = p_mi->i_length;
 680         vlm_media_instance_Delete( p_mi );
 681     }
 682     return result;
 683 }
 684
 685 int libvlc_vlm_get_media_instance_rate( libvlc_instance_t *p_instance,
 686                                         const char *psz_name, int i_instance )
 687 {
 688     vlm_media_instance_t *p_mi;
 689     int result = -1;
 690
 691     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 692     if( p_mi )
 693     {
 694         result = p_mi->i_rate;
 695         vlm_media_instance_Delete( p_mi );
 696     }
 697     return result;
 698 }
 699
 700 #if 0
 701 int libvlc_vlm_get_media_instance_title( libvlc_instance_t *p_instance,
 702                                          const char *psz_name, int i_instance )
 703 {
 704     vlm_media_instance_t *p_mi;
 705
 706     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 707     if( p_mi )
 708         vlm_media_instance_Delete( p_mi );
 709     return p_mi ? 0 : -1;
 710 }
 711
 712 int libvlc_vlm_get_media_instance_chapter( libvlc_instance_t *p_instance,
 713                                            const char *psz_name,
 714                                            int i_instance )
 715 {
 716     vlm_media_instance_t *p_mi;
 717
 718     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 719                                           i_instance );
 720     if( p_mi )
 721         vlm_media_instance_Delete( p_mi );
 722     return p_mi ? 0 : -1;
 723 }
 724
 725 int libvlc_vlm_get_media_instance_seekable( libvlc_instance_t *p_instance,
 726                                             const char *psz_name,
 727                                             int i_instance )
 728 {
 729     vlm_media_instance_t *p_mi;
 730
 731     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 732     if( p_mi )
 733         vlm_media_instance_Delete( p_mi );
 734     return p_mi ? 0 : -1;
 735 }
 736 #endif
 737
 738 libvlc_event_manager_t *
 739 libvlc_vlm_get_event_manager( libvlc_instance_t *p_instance )
 740 {
 741     if( libvlc_vlm_init( p_instance ) )
 742         return NULL;
 743     return &p_instance->vlm->event_manager;
 744 }