git.sesse.net Git - vlc/blob - 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 }
 121
 122 static int libvlc_vlm_init( libvlc_instance_t *p_instance )
 123 {
 124     if( !p_instance->libvlc_vlm.p_event_manager )
 125     {
 126         p_instance->libvlc_vlm.p_event_manager =
 127             libvlc_event_manager_new( p_instance->libvlc_vlm.p_vlm, p_instance );
 128         if( unlikely(p_instance->libvlc_vlm.p_event_manager == NULL) )
 129             return VLC_ENOMEM;
 130         libvlc_event_manager_register_event_type(
 131             p_instance->libvlc_vlm.p_event_manager,
 132             libvlc_VlmMediaAdded );
 133         libvlc_event_manager_register_event_type(
 134             p_instance->libvlc_vlm.p_event_manager,
 135             libvlc_VlmMediaRemoved );
 136         libvlc_event_manager_register_event_type(
 137             p_instance->libvlc_vlm.p_event_manager,
 138             libvlc_VlmMediaChanged );
 139         libvlc_event_manager_register_event_type(
 140             p_instance->libvlc_vlm.p_event_manager,
 141             libvlc_VlmMediaInstanceStarted );
 142         libvlc_event_manager_register_event_type(
 143             p_instance->libvlc_vlm.p_event_manager,
 144             libvlc_VlmMediaInstanceStopped );
 145         libvlc_event_manager_register_event_type(
 146             p_instance->libvlc_vlm.p_event_manager,
 147             libvlc_VlmMediaInstanceStatusInit );
 148         libvlc_event_manager_register_event_type(
 149             p_instance->libvlc_vlm.p_event_manager,
 150             libvlc_VlmMediaInstanceStatusOpening );
 151         libvlc_event_manager_register_event_type(
 152             p_instance->libvlc_vlm.p_event_manager,
 153             libvlc_VlmMediaInstanceStatusPlaying );
 154         libvlc_event_manager_register_event_type(
 155             p_instance->libvlc_vlm.p_event_manager,
 156             libvlc_VlmMediaInstanceStatusPause );
 157         libvlc_event_manager_register_event_type(
 158             p_instance->libvlc_vlm.p_event_manager,
 159             libvlc_VlmMediaInstanceStatusEnd );
 160         libvlc_event_manager_register_event_type(
 161             p_instance->libvlc_vlm.p_event_manager,
 162             libvlc_VlmMediaInstanceStatusError );
 163     }
 164
 165     if( !p_instance->libvlc_vlm.p_vlm )
 166     {
 167         p_instance->libvlc_vlm.p_vlm = vlm_New( p_instance->p_libvlc_int );
 168         if( !p_instance->libvlc_vlm.p_vlm )
 169         {
 170             libvlc_printerr( "VLM not supported or out of memory" );
 171             return VLC_EGENERIC;
 172         }
 173         var_AddCallback( (vlc_object_t *)p_instance->libvlc_vlm.p_vlm,
 174                          "intf-event", VlmEvent,
 175                          p_instance->libvlc_vlm.p_event_manager );
 176         p_instance->libvlc_vlm.pf_release = libvlc_vlm_release_internal;
 177     }
 178
 179     return VLC_SUCCESS;
 180 }
 181
 182 void libvlc_vlm_release( libvlc_instance_t *p_instance )
 183 {
 184     libvlc_vlm_release_internal( p_instance );
 185 }
 186
 187 #define VLM_RET(p,ret) do { \
 188     if( libvlc_vlm_init( p_instance ) ) \
 189         return (ret); \
 190     (p) = p_instance->libvlc_vlm.p_vlm; \
 191   } while(0)
 192
 193 static vlm_media_instance_t *
 194 libvlc_vlm_get_media_instance( libvlc_instance_t *p_instance,
 195                                const char *psz_name, int i_minstance_idx )
 196 {
 197     vlm_t *p_vlm;
 198     vlm_media_instance_t **pp_minstance;
 199     vlm_media_instance_t *p_minstance;
 200     int i_minstance;
 201     int64_t id;
 202
 203     VLM_RET(p_vlm, NULL);
 204
 205     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 206         vlm_Control( p_vlm, VLM_GET_MEDIA_INSTANCES, id, &pp_minstance,
 207                      &i_minstance ) )
 208     {
 209         libvlc_printerr( "%s: media instances not found", psz_name );
 210         return NULL;
 211     }
 212     p_minstance = NULL;
 213     if( i_minstance_idx >= 0 && i_minstance_idx < i_minstance )
 214     {
 215         p_minstance = pp_minstance[i_minstance_idx];
 216         TAB_REMOVE( i_minstance, pp_minstance, p_minstance );
 217     }
 218     while( i_minstance > 0 )
 219         vlm_media_instance_Delete( pp_minstance[--i_minstance] );
 220     TAB_CLEAN( i_minstance, pp_minstance );
 221     return p_minstance;
 222 }
 223
 224 /* local function to be used in libvlc_vlm_show_media only */
 225 static char* recurse_answer( vlm_message_t *p_answer, const char* psz_delim,
 226                              const int i_list ) {
 227     char* psz_childdelim = NULL;
 228     char* psz_nametag = NULL;
 229     char* psz_response = strdup( "" );
 230     char *psz_tmp;
 231     int i_success = 0;
 232     int i;
 233     vlm_message_t *aw_child, **paw_child;
 234
 235     i_success = asprintf( &psz_childdelim, "%s\t", psz_delim);
 236     if( i_success == -1 )
 237         return psz_response;
 238
 239     paw_child = p_answer->child;
 240     aw_child = *( paw_child );
 241     /* Iterate over children */
 242     for( i = 0; i < p_answer->i_child; i++ )
 243     {
 244         /* Spare comma if it is the last element */
 245         char c_comma = ',';
 246         if( i == (p_answer->i_child - 1) )
 247             c_comma = ' ';
 248
 249         /* Append name of child node, if not in a list */
 250         if( !i_list )
 251         {
 252             i_success = asprintf( &psz_tmp, "%s\"%s\": ",
 253                           psz_response, aw_child->psz_name );
 254             if( i_success == -1 ) break;
 255             free( psz_response );
 256             psz_response = psz_tmp;
 257         }
 258
 259         /* If child node has children, */
 260         if( aw_child->i_child )
 261         {
 262             /* If the parent node is a list (hence the child node is
 263              * inside a list), create a property of its name as if it
 264              * had a name value node
 265              */
 266             free( psz_nametag );
 267             if( i_list )
 268             {
 269                 i_success = asprintf( &psz_nametag, "\"name\": \"%s\",%s",
 270                               aw_child->psz_name, psz_childdelim );
 271                 if( i_success == -1 )
 272                 {
 273                     psz_nametag = NULL;
 274                     break;
 275                 }
 276             }
 277             else
 278             {
 279                 psz_nametag = strdup( "" );
 280             }
 281             /* If the child is a list itself, format it accordingly and
 282              * recurse through the child's children, telling them that
 283              * they are inside a list.
 284              */
 285             if( strcmp( aw_child->psz_name, "media" ) == 0 ||
 286                 strcmp( aw_child->psz_name, "inputs" ) == 0 ||
 287                 strcmp( aw_child->psz_name, "options" ) == 0 )
 288             {
 289                 char *psz_recurse = recurse_answer( aw_child, psz_childdelim, 1 );
 290                 i_success = asprintf( &psz_tmp, "%s[%s%s%s]%c%s",
 291                                       psz_response, psz_childdelim, psz_recurse,
 292                                       psz_delim, c_comma, psz_delim );
 293                 free( psz_recurse );
 294                 if( i_success == -1 ) break;
 295                 free( psz_response );
 296                 psz_response = psz_tmp;
 297             }
 298             /* Not a list, so format the child as a JSON object and
 299              * recurse through the child's children
 300              */
 301             else
 302             {
 303                 char *psz_recurse = recurse_answer( aw_child, psz_childdelim, 0 );
 304                 i_success = asprintf( &psz_tmp, "%s{%s%s%s%s}%c%s",
 305                                       psz_response, psz_childdelim, psz_nametag,
 306                                       psz_recurse, psz_delim, c_comma, psz_delim );
 307                 free( psz_recurse );
 308                 if( i_success == -1 ) break;
 309                 free( psz_response );
 310                 psz_response = psz_tmp;
 311             }
 312         }
 313         /* Otherwise - when no children are present - the node is a
 314          * value node. So print the value string
 315          */
 316         else
 317         {
 318             /* If value is equivalent to NULL, print it as null */
 319             if( aw_child->psz_value == NULL
 320                 || strcmp( aw_child->psz_value, "(null)" ) == 0 )
 321             {
 322                 i_success = asprintf( &psz_tmp, "%snull%c%s",
 323                                       psz_response, c_comma, psz_delim );
 324                 if( i_success == -1 ) break;
 325                 free( psz_response );
 326                 psz_response = psz_tmp;
 327             }
 328             /* Otherwise print the value in quotation marks */
 329             else
 330             {
 331                 i_success = asprintf( &psz_tmp, "%s\"%s\"%c%s",
 332                                       psz_response, aw_child->psz_value,
 333                                       c_comma, psz_delim );
 334                 if( i_success == -1 ) break;
 335                 free( psz_response );
 336                 psz_response = psz_tmp;
 337             }
 338         }
 339         /* getting next child */
 340         paw_child++;
 341         aw_child = *( paw_child );
 342     }
 343     free( psz_nametag );
 344     free( psz_childdelim );
 345     if( i_success == -1 )
 346     {
 347         free( psz_response );
 348         psz_response = strdup( "" );
 349     }
 350     return psz_response;
 351 }
 352
 353 const char* libvlc_vlm_show_media( libvlc_instance_t *p_instance,
 354                                    const char *psz_name )
 355 {
 356     char *psz_message = NULL;
 357     vlm_message_t *answer = NULL;
 358     char *psz_response = NULL;
 359     const char *psz_fmt = NULL;
 360     const char *psz_delimiter = NULL;
 361     int i_list;
 362     vlm_t *p_vlm = NULL;
 363
 364     VLM_RET(p_vlm, NULL);
 365
 366     assert( psz_name );
 367
 368     if( asprintf( &psz_message, "show %s", psz_name ) == -1 )
 369         return NULL;
 370
 371     vlm_ExecuteCommand( p_vlm, psz_message, &answer );
 372     if( answer->psz_value )
 373     {
 374         libvlc_printerr( "Unable to call show %s: %s",
 375                          psz_name, answer->psz_value );
 376     }
 377     else if ( answer->child )
 378     {   /* in case everything was requested  */
 379         if ( strcmp( psz_name, "" ) == 0 )
 380         {
 381             psz_fmt = "{\n\t%s\n}\n";
 382             psz_delimiter = "\n\t";
 383             i_list = 0;
 384         }
 385         else
 386         {
 387             psz_fmt = "%s\n";
 388             psz_delimiter = "\n";
 389             i_list = 1;
 390         }
 391         char *psz_tmp = recurse_answer( answer, psz_delimiter, i_list );
 392         if( asprintf( &psz_response, psz_fmt, psz_tmp ) == -1 )
 393         {
 394             libvlc_printerr( "Out of memory" );
 395             psz_response = NULL;
 396         }
 397         free( psz_tmp );
 398     }
 399     vlm_MessageDelete( answer );
 400     free( psz_message );
 401     return( psz_response );
 402 }
 403
 404
 405 int libvlc_vlm_add_broadcast( libvlc_instance_t *p_instance,
 406                               const char *psz_name,
 407                               const char *psz_input,
 408                               const char *psz_output, int i_options,
 409                               const char * const *ppsz_options,
 410                               int b_enabled, int b_loop )
 411 {
 412     vlm_t *p_vlm;
 413     vlm_media_t m;
 414     int n;
 415
 416     VLM_RET(p_vlm, -1);
 417
 418     vlm_media_Init( &m );
 419     m.psz_name = strdup( psz_name );
 420     m.b_enabled = b_enabled;
 421     m.b_vod = false;
 422     m.broadcast.b_loop = b_loop;
 423     if( psz_input )
 424         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 425     if( psz_output )
 426         m.psz_output = strdup( psz_output );
 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_add_vod( libvlc_instance_t *p_instance, const char *psz_name,
 441                         const char *psz_input, int i_options,
 442                         const char * const *ppsz_options, int b_enabled,
 443                         const char *psz_mux )
 444 {
 445     vlm_t *p_vlm;
 446     vlm_media_t m;
 447     int n;
 448
 449     VLM_RET(p_vlm, -1);
 450
 451     vlm_media_Init( &m );
 452     m.psz_name = strdup( psz_name );
 453     m.b_enabled = b_enabled;
 454     m.b_vod = true;
 455     m.vod.psz_mux = psz_mux ? strdup( psz_mux ) : NULL;
 456     if( psz_input )
 457         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 458     for( n = 0; n < i_options; n++ )
 459         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 460
 461     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
 462     vlm_media_Clean( &m );
 463     if( n )
 464     {
 465         libvlc_printerr( "Media %s creation failed", psz_name );
 466         return -1;
 467     }
 468     return 0;
 469 }
 470
 471 int libvlc_vlm_del_media( libvlc_instance_t *p_instance, const char *psz_name )
 472 {
 473     vlm_t *p_vlm;
 474     int64_t id;
 475
 476     VLM_RET(p_vlm, -1);
 477
 478     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 479         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
 480     {
 481         libvlc_printerr( "Unable to delete %s", psz_name );
 482         return -1;
 483     }
 484     return 0;
 485 }
 486
 487 static vlm_media_t *get_media( libvlc_instance_t *p_instance,
 488                                vlm_t **restrict pp_vlm, const char *name )
 489 {
 490     vlm_media_t *p_media;
 491     vlm_t *p_vlm;
 492     int64_t id;
 493
 494     VLM_RET(p_vlm, NULL);
 495     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, name, &id ) ||
 496         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) )
 497         return NULL;
 498     *pp_vlm = p_vlm;
 499     return p_media;
 500 }
 501
 502 #define VLM_CHANGE(psz_error, code ) do {   \
 503     vlm_t *p_vlm;           \
 504     vlm_media_t *p_media = get_media( p_instance, &p_vlm, psz_name ); \
 505     if( p_media != NULL ) { \
 506         code;               \
 507         if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) )       \
 508             p_vlm = NULL;                                           \
 509         vlm_media_Delete( p_media );                                \
 510         if( p_vlm != NULL ) \
 511             return 0;       \
 512     }                       \
 513     libvlc_printerr( psz_error, psz_name );                         \
 514     return -1;              \
 515   } while(0)
 516
 517 int libvlc_vlm_set_enabled( libvlc_instance_t *p_instance,
 518                             const char *psz_name, int b_enabled )
 519 {
 520 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
 521     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
 522 #undef VLM_CHANGE_CODE
 523 }
 524
 525 int libvlc_vlm_set_loop( libvlc_instance_t *p_instance, const char *psz_name,
 526                          int b_loop )
 527 {
 528 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
 529     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
 530 #undef VLM_CHANGE_CODE
 531 }
 532
 533 int libvlc_vlm_set_mux( libvlc_instance_t *p_instance, const char *psz_name,
 534                         const char *psz_mux )
 535 {
 536 #define VLM_CHANGE_CODE { if( p_media->b_vod ) { \
 537                             free( p_media->vod.psz_mux ); \
 538                             p_media->vod.psz_mux = psz_mux \
 539                                  ? strdup( psz_mux ) : NULL; \
 540                           } }
 541     VLM_CHANGE( "Unable to change %s mux property", VLM_CHANGE_CODE );
 542 #undef VLM_CHANGE_CODE
 543 }
 544
 545 int libvlc_vlm_set_output( libvlc_instance_t *p_instance,
 546                            const char *psz_name, const char *psz_output )
 547 {
 548 #define VLM_CHANGE_CODE { free( p_media->psz_output ); \
 549                           p_media->psz_output = strdup( psz_output ); }
 550     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
 551 #undef VLM_CHANGE_CODE
 552 }
 553
 554 int libvlc_vlm_set_input( libvlc_instance_t *p_instance,
 555                           const char *psz_name, const char *psz_input )
 556 {
 557 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
 558                             free( p_media->ppsz_input[--p_media->i_input] );\
 559                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
 560                                       strdup(psz_input) ); }
 561     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 562 #undef VLM_CHANGE_CODE
 563 }
 564
 565 int libvlc_vlm_add_input( libvlc_instance_t *p_instance,
 566                           const char *psz_name, const char *psz_input )
 567 {
 568 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
 569                           strdup(psz_input) ); }
 570     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 571 #undef VLM_CHANGE_CODE
 572 }
 573
 574 int libvlc_vlm_change_media( libvlc_instance_t *p_instance,
 575                              const char *psz_name, const char *psz_input,
 576                              const char *psz_output, int i_options,
 577                              const char * const *ppsz_options, int b_enabled,
 578                              int b_loop )
 579 {
 580 #define VLM_CHANGE_CODE { int n;        \
 581     p_media->b_enabled = b_enabled;     \
 582     p_media->broadcast.b_loop = b_loop; \
 583     while( p_media->i_input > 0 )       \
 584         free( p_media->ppsz_input[--p_media->i_input] );    \
 585     if( psz_input )                     \
 586         TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); \
 587     free( p_media->psz_output );        \
 588     p_media->psz_output = psz_output ? strdup( psz_output ) : NULL; \
 589     while( p_media->i_option > 0 )     \
 590         free( p_media->ppsz_option[--p_media->i_option] );        \
 591     for( n = 0; n < i_options; n++ )    \
 592         TAB_APPEND( p_media->i_option, p_media->ppsz_option, \
 593                     strdup(ppsz_options[n]) );   \
 594   }
 595     VLM_CHANGE( "Unable to change %s properties", VLM_CHANGE_CODE );
 596 #undef VLM_CHANGE_CODE
 597 }
 598
 599 int libvlc_vlm_play_media( libvlc_instance_t *p_instance,
 600                            const char *psz_name )
 601 {
 602     vlm_t *p_vlm;
 603     int64_t id;
 604
 605     VLM_RET(p_vlm, -1);
 606
 607     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 608         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
 609     {
 610         libvlc_printerr( "Unable to play %s", psz_name );
 611         return -1;
 612     }
 613     return 0;
 614 }
 615
 616 int libvlc_vlm_stop_media( libvlc_instance_t *p_instance,
 617                            const char *psz_name )
 618 {
 619     vlm_t *p_vlm;
 620     int64_t id;
 621
 622     VLM_RET(p_vlm, -1);
 623
 624     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 625         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
 626     {
 627         libvlc_printerr( "Unable to stop %s", psz_name );
 628         return -1;
 629     }
 630     return 0;
 631 }
 632
 633 int libvlc_vlm_pause_media( libvlc_instance_t *p_instance,
 634                             const char *psz_name )
 635 {
 636     vlm_t *p_vlm;
 637     int64_t id;
 638
 639     VLM_RET(p_vlm, -1);
 640
 641     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 642         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
 643     {
 644         libvlc_printerr( "Unable to pause %s", psz_name );
 645         return -1;
 646     }
 647     return 0;
 648 }
 649
 650 int libvlc_vlm_seek_media( libvlc_instance_t *p_instance,
 651                            const char *psz_name, float f_percentage )
 652 {
 653     vlm_t *p_vlm;
 654     int64_t id;
 655
 656     VLM_RET(p_vlm, -1);
 657
 658     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 659         vlm_Control( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, NULL,
 660                      f_percentage ) )
 661     {
 662         libvlc_printerr( "Unable to seek %s to %f%%", psz_name, f_percentage );
 663         return -1;
 664     }
 665     return 0;
 666 }
 667
 668 float libvlc_vlm_get_media_instance_position( libvlc_instance_t *p_instance,
 669                                               const char *psz_name,
 670                                               int i_instance )
 671 {
 672     vlm_media_instance_t *p_mi;
 673     float 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->d_position;
 679         vlm_media_instance_Delete( p_mi );
 680     }
 681     return result;
 682 }
 683
 684 int libvlc_vlm_get_media_instance_time( 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_time;
 694         vlm_media_instance_Delete( p_mi );
 695     }
 696     return result;
 697 }
 698
 699 int libvlc_vlm_get_media_instance_length( libvlc_instance_t *p_instance,
 700                                           const char *psz_name,
 701                                           int i_instance )
 702 {
 703     vlm_media_instance_t *p_mi;
 704     int result = -1;
 705
 706     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 707     if( p_mi )
 708     {
 709         result = p_mi->i_length;
 710         vlm_media_instance_Delete( p_mi );
 711     }
 712     return result;
 713 }
 714
 715 int libvlc_vlm_get_media_instance_rate( libvlc_instance_t *p_instance,
 716                                         const char *psz_name, int i_instance )
 717 {
 718     vlm_media_instance_t *p_mi;
 719     int result = -1;
 720
 721     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 722     if( p_mi )
 723     {
 724         result = p_mi->i_rate;
 725         vlm_media_instance_Delete( p_mi );
 726     }
 727     return result;
 728 }
 729
 730 #if 0
 731 int libvlc_vlm_get_media_instance_title( libvlc_instance_t *p_instance,
 732                                          const char *psz_name, int i_instance )
 733 {
 734     vlm_media_instance_t *p_mi;
 735
 736     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 737     if( p_mi )
 738         vlm_media_instance_Delete( p_mi );
 739     return p_mi ? 0 : -1;
 740 }
 741
 742 int libvlc_vlm_get_media_instance_chapter( libvlc_instance_t *p_instance,
 743                                            const char *psz_name,
 744                                            int i_instance )
 745 {
 746     vlm_media_instance_t *p_mi;
 747
 748     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
 749                                           i_instance );
 750     if( p_mi )
 751         vlm_media_instance_Delete( p_mi );
 752     return p_mi ? 0 : -1;
 753 }
 754
 755 int libvlc_vlm_get_media_instance_seekable( libvlc_instance_t *p_instance,
 756                                             const char *psz_name,
 757                                             int i_instance )
 758 {
 759     vlm_media_instance_t *p_mi;
 760
 761     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
 762     if( p_mi )
 763         vlm_media_instance_Delete( p_mi );
 764     return p_mi ? 0 : -1;
 765 }
 766 #endif
 767
 768 libvlc_event_manager_t *
 769 libvlc_vlm_get_event_manager( libvlc_instance_t *p_instance )
 770 {
 771     if( libvlc_vlm_init( p_instance ) )
 772         return NULL;
 773     return p_instance->libvlc_vlm.p_event_manager;
 774 }