c6d5f368107480c99f11d997353aea497d3f871e
[vlc.git] / lib / 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: ClĂ©ment 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 #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             if( i_list )
267             {
268                 i_success = asprintf( &psz_nametag, "\"name\": \"%s\",%s",
269                               aw_child->psz_name, psz_childdelim );
270                 if( i_success == -1 ) break;
271             }
272             else
273             {
274                 psz_nametag = strdup( "" );
275             }
276             /* If the child is a list itself, format it accordingly and
277              * recurse through the child's children, telling them that
278              * they are inside a list.
279              */
280             if( strcmp( aw_child->psz_name, "media" ) == 0 ||
281                 strcmp( aw_child->psz_name, "inputs" ) == 0 ||
282                 strcmp( aw_child->psz_name, "options" ) == 0 )
283             {
284                 char *psz_recurse = recurse_answer( aw_child, psz_childdelim, 1 ),
285                 i_success = asprintf( &psz_tmp, "%s[%s%s%s]%c%s",
286                                       psz_response, psz_childdelim, psz_recurse,
287                                       psz_delim, c_comma, psz_delim );
288                 free( psz_recurse );
289                 if( i_success == -1 ) break;
290                 free( psz_response );
291                 psz_response = psz_tmp;
292             }
293             /* Not a list, so format the child as a JSON object and
294              * recurse through the child's children
295              */
296             else
297             {
298                 char *psz_recurse = recurse_answer( aw_child, psz_childdelim, 0 ),
299                 i_success = asprintf( &psz_tmp, "%s{%s%s%s%s}%c%s",
300                                       psz_response, psz_childdelim, psz_nametag,
301                                       psz_recurse, psz_delim, c_comma, psz_delim );
302                 free( psz_recurse );
303                 if( i_success == -1 ) break;
304                 free( psz_response );
305                 psz_response = psz_tmp;
306             }
307         }
308         /* Otherwise - when no children are present - the node is a
309          * value node. So print the value string
310          */
311         else
312         {
313             /* If value is equivalent to NULL, print it as null */
314             if( aw_child->psz_value == NULL
315                 || strcmp( aw_child->psz_value, "(null)" ) == 0 )
316             {
317                 i_success = asprintf( &psz_tmp, "%snull%c%s",
318                                       psz_response, c_comma, psz_delim );
319                 if( i_success == -1 ) break;
320                 free( psz_response );
321                 psz_response = psz_tmp;
322             }
323             /* Otherwise print the value in quotation marks */
324             else
325             {
326                 i_success = asprintf( &psz_tmp, "%s\"%s\"%c%s",
327                                       psz_response, aw_child->psz_value,
328                                       c_comma, psz_delim );
329                 if( i_success == -1 ) break;
330                 free( psz_response );
331                 psz_response = psz_tmp;
332             }
333         }
334         /* getting next child */
335         paw_child++;
336         aw_child = *( paw_child );
337     }
338     free( psz_nametag );
339     free( psz_childdelim );
340     if( i_success == -1 )
341     {
342         free( psz_response );
343         psz_response = strdup( "" );
344     }
345     return psz_response;
346 }
347
348 const char* libvlc_vlm_show_media( libvlc_instance_t *p_instance,
349                                    const char *psz_name )
350 {
351     char *psz_message = NULL;
352     vlm_message_t *answer = NULL;
353     char *psz_response = NULL;
354     const char *psz_fmt = NULL;
355     const char *psz_delimiter = NULL;
356     int i_list;
357     vlm_t *p_vlm = NULL;
358
359     VLM_RET(p_vlm, NULL);
360
361     assert( psz_name );
362
363     if( asprintf( &psz_message, "show %s", psz_name ) == -1 )
364         return NULL;
365
366     vlm_ExecuteCommand( p_vlm, psz_message, &answer );
367     if( answer->psz_value )
368     {
369         libvlc_printerr( "Unable to call show %s: %s",
370                          psz_name, answer->psz_value );
371     }
372     else if ( answer->child )
373     {   /* in case everything was requested  */
374         if ( strcmp( psz_name, "" ) == 0 )
375         {
376             psz_fmt = "{\n\t%s\n}\n";
377             psz_delimiter = "\n\t";
378             i_list = 0;
379         }
380         else
381         {
382             psz_fmt = "%s\n";
383             psz_delimiter = "\n";
384             i_list = 1;
385         }
386         char *psz_tmp = recurse_answer( answer, psz_delimiter, i_list );
387         if( asprintf( &psz_response, psz_fmt, psz_tmp ) == -1 )
388         {
389             libvlc_printerr( "Out of memory" );
390             psz_response = NULL;
391         }
392         free( psz_tmp );
393     }
394     free( psz_message );
395     return( psz_response );
396 }
397
398
399 int libvlc_vlm_add_broadcast( libvlc_instance_t *p_instance,
400                               const char *psz_name,
401                               const char *psz_input,
402                               const char *psz_output, int i_options,
403                               const char * const *ppsz_options,
404                               int b_enabled, int b_loop )
405 {
406     vlm_t *p_vlm;
407     vlm_media_t m;
408     int n;
409
410     VLM_RET(p_vlm, -1);
411
412     vlm_media_Init( &m );
413     m.psz_name = strdup( psz_name );
414     m.b_enabled = b_enabled;
415     m.b_vod = false;
416     m.broadcast.b_loop = b_loop;
417     if( psz_input )
418         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
419     if( psz_output )
420         m.psz_output = strdup( psz_output );
421     for( n = 0; n < i_options; n++ )
422         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
423
424     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
425     vlm_media_Clean( &m );
426     if( n )
427     {
428         libvlc_printerr( "Media %s creation failed", psz_name );
429         return -1;
430     }
431     return 0;
432 }
433
434 int libvlc_vlm_add_vod( libvlc_instance_t *p_instance, const char *psz_name,
435                         const char *psz_input, int i_options,
436                         const char * const *ppsz_options, int b_enabled,
437                         const char *psz_mux )
438 {
439     vlm_t *p_vlm;
440     vlm_media_t m;
441     int n;
442
443     VLM_RET(p_vlm, -1);
444
445     vlm_media_Init( &m );
446     m.psz_name = strdup( psz_name );
447     m.b_enabled = b_enabled;
448     m.b_vod = true;
449     m.vod.psz_mux = psz_mux ? strdup( psz_mux ) : NULL;
450     if( psz_input )
451         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
452     for( n = 0; n < i_options; n++ )
453         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
454
455     n = vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL );
456     vlm_media_Clean( &m );
457     if( n )
458     {
459         libvlc_printerr( "Media %s creation failed", psz_name );
460         return -1;
461     }
462     return 0;
463 }
464
465 int libvlc_vlm_del_media( libvlc_instance_t *p_instance, const char *psz_name )
466 {
467     vlm_t *p_vlm;
468     int64_t id;
469
470     VLM_RET(p_vlm, -1);
471
472     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
473         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
474     {
475         libvlc_printerr( "Unable to delete %s", psz_name );
476         return -1;
477     }
478     return 0;
479 }
480
481 static vlm_media_t *get_media( libvlc_instance_t *p_instance,
482                                vlm_t **restrict pp_vlm, const char *name )
483 {
484     vlm_media_t *p_media;
485     vlm_t *p_vlm;
486     int64_t id;
487
488     VLM_RET(p_vlm, NULL);
489     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, name, &id ) ||
490         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) )
491         return NULL;
492     *pp_vlm = p_vlm;
493     return p_media;
494 }
495
496 #define VLM_CHANGE(psz_error, code ) do {   \
497     vlm_t *p_vlm;           \
498     vlm_media_t *p_media = get_media( p_instance, &p_vlm, psz_name ); \
499     if( p_media != NULL ) { \
500         code;               \
501         if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) )       \
502             p_vlm = NULL;                                           \
503         vlm_media_Delete( p_media );                                \
504         if( p_vlm != NULL ) \
505             return 0;       \
506     }                       \
507     libvlc_printerr( psz_error, psz_name );                         \
508     return -1;              \
509   } while(0)
510
511 int libvlc_vlm_set_enabled( libvlc_instance_t *p_instance,
512                             const char *psz_name, int b_enabled )
513 {
514 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
515     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
516 #undef VLM_CHANGE_CODE
517 }
518
519 int libvlc_vlm_set_loop( libvlc_instance_t *p_instance, const char *psz_name,
520                          int b_loop )
521 {
522 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
523     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
524 #undef VLM_CHANGE_CODE
525 }
526
527 int libvlc_vlm_set_mux( libvlc_instance_t *p_instance, const char *psz_name,
528                         const char *psz_mux )
529 {
530 #define VLM_CHANGE_CODE { if( p_media->b_vod ) { \
531                             free( p_media->vod.psz_mux ); \
532                             p_media->vod.psz_mux = psz_mux \
533                                  ? strdup( psz_mux ) : NULL; \
534                           } }
535     VLM_CHANGE( "Unable to change %s mux property", VLM_CHANGE_CODE );
536 #undef VLM_CHANGE_CODE
537 }
538
539 int libvlc_vlm_set_output( libvlc_instance_t *p_instance,
540                            const char *psz_name, const char *psz_output )
541 {
542 #define VLM_CHANGE_CODE { free( p_media->psz_output ); \
543                           p_media->psz_output = strdup( psz_output ); }
544     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
545 #undef VLM_CHANGE_CODE
546 }
547
548 int libvlc_vlm_set_input( libvlc_instance_t *p_instance,
549                           const char *psz_name, const char *psz_input )
550 {
551 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
552                             free( p_media->ppsz_input[--p_media->i_input] );\
553                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
554                                       strdup(psz_input) ); }
555     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
556 #undef VLM_CHANGE_CODE
557 }
558
559 int libvlc_vlm_add_input( libvlc_instance_t *p_instance,
560                           const char *psz_name, const char *psz_input )
561 {
562 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, \
563                           strdup(psz_input) ); }
564     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
565 #undef VLM_CHANGE_CODE
566 }
567
568 int libvlc_vlm_change_media( libvlc_instance_t *p_instance,
569                              const char *psz_name, const char *psz_input,
570                              const char *psz_output, int i_options,
571                              const char * const *ppsz_options, int b_enabled,
572                              int b_loop )
573 {
574 #define VLM_CHANGE_CODE { int n;        \
575     p_media->b_enabled = b_enabled;     \
576     p_media->broadcast.b_loop = b_loop; \
577     while( p_media->i_input > 0 )       \
578         free( p_media->ppsz_input[--p_media->i_input] );    \
579     if( psz_input )                     \
580         TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); \
581     free( p_media->psz_output );        \
582     p_media->psz_output = psz_output ? strdup( psz_output ) : NULL; \
583     while( p_media->i_option > 0 )     \
584         free( p_media->ppsz_option[--p_media->i_option] );        \
585     for( n = 0; n < i_options; n++ )    \
586         TAB_APPEND( p_media->i_option, p_media->ppsz_option, \
587                     strdup(ppsz_options[n]) );   \
588   }
589     VLM_CHANGE( "Unable to change %s properties", VLM_CHANGE_CODE );
590 #undef VLM_CHANGE_CODE
591 }
592
593 int libvlc_vlm_play_media( libvlc_instance_t *p_instance,
594                            const char *psz_name )
595 {
596     vlm_t *p_vlm;
597     int64_t id;
598
599     VLM_RET(p_vlm, -1);
600
601     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
602         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
603     {
604         libvlc_printerr( "Unable to play %s", psz_name );
605         return -1;
606     }
607     return 0;
608 }
609
610 int libvlc_vlm_stop_media( libvlc_instance_t *p_instance,
611                            const char *psz_name )
612 {
613     vlm_t *p_vlm;
614     int64_t id;
615
616     VLM_RET(p_vlm, -1);
617
618     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
619         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
620     {
621         libvlc_printerr( "Unable to stop %s", psz_name );
622         return -1;
623     }
624     return 0;
625 }
626
627 int libvlc_vlm_pause_media( libvlc_instance_t *p_instance,
628                             const char *psz_name )
629 {
630     vlm_t *p_vlm;
631     int64_t id;
632
633     VLM_RET(p_vlm, -1);
634
635     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
636         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
637     {
638         libvlc_printerr( "Unable to pause %s", psz_name );
639         return -1;
640     }
641     return 0;
642 }
643
644 int libvlc_vlm_seek_media( libvlc_instance_t *p_instance,
645                            const char *psz_name, float f_percentage )
646 {
647     vlm_t *p_vlm;
648     int64_t id;
649
650     VLM_RET(p_vlm, -1);
651
652     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
653         vlm_Control( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, NULL,
654                      f_percentage ) )
655     {
656         libvlc_printerr( "Unable to seek %s to %f%%", psz_name, f_percentage );
657         return -1;
658     }
659     return 0;
660 }
661
662 float libvlc_vlm_get_media_instance_position( libvlc_instance_t *p_instance,
663                                               const char *psz_name,
664                                               int i_instance )
665 {
666     vlm_media_instance_t *p_mi;
667     float result = -1.;
668
669     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
670     if( p_mi )
671     {
672         result = p_mi->d_position;
673         vlm_media_instance_Delete( p_mi );
674     }
675     return result;
676 }
677
678 int libvlc_vlm_get_media_instance_time( libvlc_instance_t *p_instance,
679                                         const char *psz_name, int i_instance )
680 {
681     vlm_media_instance_t *p_mi;
682     int result = -1;
683
684     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
685     if( p_mi )
686     {
687         result = p_mi->i_time;
688         vlm_media_instance_Delete( p_mi );
689     }
690     return result;
691 }
692
693 int libvlc_vlm_get_media_instance_length( libvlc_instance_t *p_instance,
694                                           const char *psz_name,
695                                           int i_instance )
696 {
697     vlm_media_instance_t *p_mi;
698     int result = -1;
699
700     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
701     if( p_mi )
702     {
703         result = p_mi->i_length;
704         vlm_media_instance_Delete( p_mi );
705     }
706     return result;
707 }
708
709 int libvlc_vlm_get_media_instance_rate( libvlc_instance_t *p_instance,
710                                         const char *psz_name, int i_instance )
711 {
712     vlm_media_instance_t *p_mi;
713     int result = -1;
714
715     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
716     if( p_mi )
717     {
718         result = p_mi->i_rate;
719         vlm_media_instance_Delete( p_mi );
720     }
721     return result;
722 }
723
724 #if 0
725 int libvlc_vlm_get_media_instance_title( libvlc_instance_t *p_instance,
726                                          const char *psz_name, 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
736 int libvlc_vlm_get_media_instance_chapter( libvlc_instance_t *p_instance,
737                                            const char *psz_name,
738                                            int i_instance )
739 {
740     vlm_media_instance_t *p_mi;
741
742     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name,
743                                           i_instance );
744     if( p_mi )
745         vlm_media_instance_Delete( p_mi );
746     return p_mi ? 0 : -1;
747 }
748
749 int libvlc_vlm_get_media_instance_seekable( libvlc_instance_t *p_instance,
750                                             const char *psz_name,
751                                             int i_instance )
752 {
753     vlm_media_instance_t *p_mi;
754
755     p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance );
756     if( p_mi )
757         vlm_media_instance_Delete( p_mi );
758     return p_mi ? 0 : -1;
759 }
760 #endif
761
762 libvlc_event_manager_t *
763 libvlc_vlm_get_event_manager( libvlc_instance_t *p_instance )
764 {
765     vlm_t *p_vlm;
766     VLM_RET( p_vlm, NULL);
767     return p_instance->libvlc_vlm.p_event_manager;
768 }