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

   1 /*****************************************************************************
   2  * media_player.c: Libvlc API Media Instance management functions
   3  *****************************************************************************
   4  * Copyright (C) 2005-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <assert.h>
  29
  30 #include <vlc/libvlc.h>
  31 #include <vlc/libvlc_media.h>
  32 #include <vlc/libvlc_events.h>
  33
  34 #include <vlc_demux.h>
  35 #include <vlc_input.h>
  36 #include <vlc_vout.h>
  37
  38 #include "libvlc.h"
  39
  40 #include "libvlc_internal.h"
  41 #include "media_internal.h" // libvlc_media_set_state()
  42 #include "media_player_internal.h"
  43
  44 static int
  45 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  46                         vlc_value_t oldval, vlc_value_t newval,
  47                         void * p_userdata );
  48 static int
  49 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  50                         vlc_value_t oldval, vlc_value_t newval,
  51                         void * p_userdata );
  52 static int
  53 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  54                      vlc_value_t oldval, vlc_value_t newval,
  55                      void * p_userdata );
  56
  57 static int
  58 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
  59                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  60
  61 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
  62
  63 /*
  64  * Shortcuts
  65  */
  66
  67 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
  68 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
  69 {
  70     libvlc_event_manager_register_event_type(mp->p_event_manager, type);
  71 }
  72
  73 /*
  74  * The input lock protects the input and input resource pointer.
  75  * It MUST NOT be used from callbacks.
  76  *
  77  * The object lock protects the reset, namely the media and the player state.
  78  * It can, and usually needs to be taken from callbacks.
  79  * The object lock can be acquired under the input lock... and consequently
  80  * the opposite order is STRICTLY PROHIBITED.
  81  */
  82 static inline void lock(libvlc_media_player_t *mp)
  83 {
  84     vlc_mutex_lock(&mp->object_lock);
  85 }
  86
  87 static inline void unlock(libvlc_media_player_t *mp)
  88 {
  89     vlc_mutex_unlock(&mp->object_lock);
  90 }
  91
  92 static inline void lock_input(libvlc_media_player_t *mp)
  93 {
  94     vlc_mutex_lock(&mp->input.lock);
  95 }
  96
  97 static inline void unlock_input(libvlc_media_player_t *mp)
  98 {
  99     vlc_mutex_unlock(&mp->input.lock);
 100 }
 101
 102 /*
 103  * Release the associated input thread.
 104  *
 105  * Object lock is NOT held.
 106  * Input lock is held or instance is being destroyed.
 107  */
 108 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
 109 {
 110     assert( p_mi );
 111
 112     input_thread_t *p_input_thread = p_mi->input.p_thread;
 113     if( !p_input_thread )
 114         return;
 115
 116     var_DelCallback( p_input_thread, "can-seek",
 117                      input_seekable_changed, p_mi );
 118     var_DelCallback( p_input_thread, "can-pause",
 119                     input_pausable_changed, p_mi );
 120     var_DelCallback( p_input_thread, "intf-event",
 121                      input_event_changed, p_mi );
 122
 123     /* We owned this one */
 124     input_Stop( p_input_thread, b_input_abort );
 125
 126     vlc_thread_join( p_input_thread );
 127
 128     assert( p_input_thread->b_dead );
 129
 130     p_mi->input.p_thread = NULL;
 131     vlc_object_release( p_input_thread );
 132 }
 133
 134 /*
 135  * Retrieve the input thread. Be sure to release the object
 136  * once you are done with it. (libvlc Internal)
 137  */
 138 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
 139 {
 140     input_thread_t *p_input_thread;
 141
 142     assert( p_mi );
 143
 144     lock_input(p_mi);
 145     p_input_thread = p_mi->input.p_thread;
 146     if( p_input_thread )
 147         vlc_object_hold( p_input_thread );
 148     else
 149         libvlc_printerr( "No active input" );
 150     unlock_input(p_mi);
 151
 152     return p_input_thread;
 153 }
 154
 155 /*
 156  * Set the internal state of the media_player. (media player Internal)
 157  *
 158  * Function will lock the media_player.
 159  */
 160 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
 161     bool b_locked )
 162 {
 163     if(!b_locked)
 164         lock(p_mi);
 165     p_mi->state = state;
 166
 167     libvlc_media_t *media = p_mi->p_md;
 168     if (media)
 169         libvlc_media_retain(media);
 170
 171     if(!b_locked)
 172         unlock(p_mi);
 173
 174     if (media)
 175     {
 176         // Also set the state of the corresponding media
 177         // This is strictly for convenience.
 178         libvlc_media_set_state(media, state);
 179
 180         libvlc_media_release(media);
 181     }
 182 }
 183
 184 static int
 185 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 186                         vlc_value_t oldval, vlc_value_t newval,
 187                         void * p_userdata )
 188 {
 189     VLC_UNUSED(oldval);
 190     VLC_UNUSED(p_this);
 191     VLC_UNUSED(psz_cmd);
 192     libvlc_media_player_t * p_mi = p_userdata;
 193     libvlc_event_t event;
 194
 195     event.type = libvlc_MediaPlayerSeekableChanged;
 196     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 197
 198     libvlc_event_send( p_mi->p_event_manager, &event );
 199     return VLC_SUCCESS;
 200 }
 201
 202 static int
 203 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 204                         vlc_value_t oldval, vlc_value_t newval,
 205                         void * p_userdata )
 206 {
 207     VLC_UNUSED(oldval);
 208     VLC_UNUSED(p_this);
 209     VLC_UNUSED(psz_cmd);
 210     libvlc_media_player_t * p_mi = p_userdata;
 211     libvlc_event_t event;
 212
 213     event.type = libvlc_MediaPlayerPausableChanged;
 214     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 215
 216     libvlc_event_send( p_mi->p_event_manager, &event );
 217     return VLC_SUCCESS;
 218 }
 219
 220 static int
 221 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 222                      vlc_value_t oldval, vlc_value_t newval,
 223                      void * p_userdata )
 224 {
 225     VLC_UNUSED(oldval);
 226     input_thread_t * p_input = (input_thread_t *)p_this;
 227     libvlc_media_player_t * p_mi = p_userdata;
 228     libvlc_event_t event;
 229
 230     assert( !strcmp( psz_cmd, "intf-event" ) );
 231
 232     if( newval.i_int == INPUT_EVENT_STATE )
 233     {
 234         libvlc_state_t libvlc_state;
 235
 236         switch ( var_GetInteger( p_input, "state" ) )
 237         {
 238             case INIT_S:
 239                 libvlc_state = libvlc_NothingSpecial;
 240                 event.type = libvlc_MediaPlayerNothingSpecial;
 241                 break;
 242             case OPENING_S:
 243                 libvlc_state = libvlc_Opening;
 244                 event.type = libvlc_MediaPlayerOpening;
 245                 break;
 246             case PLAYING_S:
 247                 libvlc_state = libvlc_Playing;
 248                 event.type = libvlc_MediaPlayerPlaying;
 249                 break;
 250             case PAUSE_S:
 251                 libvlc_state = libvlc_Paused;
 252                 event.type = libvlc_MediaPlayerPaused;
 253                 break;
 254             case END_S:
 255                 libvlc_state = libvlc_Ended;
 256                 event.type = libvlc_MediaPlayerEndReached;
 257                 break;
 258             case ERROR_S:
 259                 libvlc_state = libvlc_Error;
 260                 event.type = libvlc_MediaPlayerEncounteredError;
 261                 break;
 262
 263             default:
 264                 return VLC_SUCCESS;
 265         }
 266
 267         set_state( p_mi, libvlc_state, false );
 268         libvlc_event_send( p_mi->p_event_manager, &event );
 269     }
 270     else if( newval.i_int == INPUT_EVENT_ABORT )
 271     {
 272         libvlc_state_t libvlc_state = libvlc_Stopped;
 273         event.type = libvlc_MediaPlayerStopped;
 274
 275         set_state( p_mi, libvlc_state, false );
 276         libvlc_event_send( p_mi->p_event_manager, &event );
 277     }
 278     else if( newval.i_int == INPUT_EVENT_POSITION )
 279     {
 280         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 281             return VLC_SUCCESS; /* Don't send the position while stopped */
 282
 283         /* */
 284         event.type = libvlc_MediaPlayerPositionChanged;
 285         event.u.media_player_position_changed.new_position =
 286                                           var_GetFloat( p_input, "position" );
 287         libvlc_event_send( p_mi->p_event_manager, &event );
 288
 289         /* */
 290         event.type = libvlc_MediaPlayerTimeChanged;
 291         event.u.media_player_time_changed.new_time =
 292            from_mtime(var_GetTime( p_input, "time" ));
 293         libvlc_event_send( p_mi->p_event_manager, &event );
 294     }
 295     else if( newval.i_int == INPUT_EVENT_LENGTH )
 296     {
 297         event.type = libvlc_MediaPlayerLengthChanged;
 298         event.u.media_player_length_changed.new_length =
 299            from_mtime(var_GetTime( p_input, "length" ));
 300         libvlc_event_send( p_mi->p_event_manager, &event );
 301     }
 302
 303     return VLC_SUCCESS;
 304
 305 }
 306
 307 /**************************************************************************
 308  * Snapshot Taken Event.
 309  *
 310  * FIXME: This snapshot API interface makes no sense in media_player.
 311  *************************************************************************/
 312 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
 313                               vlc_value_t oldval, vlc_value_t newval, void *p_data )
 314 {
 315     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 316
 317     libvlc_media_player_t *mp = p_data;
 318     libvlc_event_t event;
 319     event.type = libvlc_MediaPlayerSnapshotTaken;
 320     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
 321     libvlc_event_send(mp->p_event_manager, &event);
 322
 323     return VLC_SUCCESS;
 324 }
 325
 326 static input_thread_t *find_input (vlc_object_t *obj)
 327 {
 328     libvlc_media_player_t *mp = (libvlc_media_player_t *)obj;
 329
 330     return libvlc_get_input_thread (mp);
 331 }
 332
 333 /* */
 334 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 335
 336
 337 /**************************************************************************
 338  * Create a Media Instance object.
 339  *
 340  * Refcount strategy:
 341  * - All items created by _new start with a refcount set to 1.
 342  * - Accessor _release decrease the refcount by 1, if after that
 343  *   operation the refcount is 0, the object is destroyed.
 344  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 345  *
 346  * Object locking strategy:
 347  * - No lock held while in constructor.
 348  * - When accessing any member variable this lock is held. (XXX who locks?)
 349  * - When attempting to destroy the object the lock is also held.
 350  **************************************************************************/
 351 libvlc_media_player_t *
 352 libvlc_media_player_new( libvlc_instance_t *instance )
 353 {
 354     libvlc_media_player_t * mp;
 355
 356     assert(instance);
 357
 358     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 359     if (unlikely(mp == NULL))
 360     {
 361         libvlc_printerr("Not enough memory");
 362         return NULL;
 363     }
 364     vlc_object_attach (mp, mp->p_libvlc);
 365
 366     /* Input */
 367     var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
 368
 369     /* Video */
 370     var_Create (mp, "vout", VLC_VAR_STRING|VLC_VAR_DOINHERIT);
 371     var_Create (mp, "window", VLC_VAR_STRING);
 372     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 373 #ifdef WIN32
 374     var_Create (mp, "drawable-hwnd", VLC_VAR_ADDRESS);
 375 #endif
 376 #ifdef __APPLE__
 377     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 378     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 379 #endif
 380
 381     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 382     var_SetBool (mp, "keyboard-events", true);
 383     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 384     var_SetBool (mp, "mouse-events", true);
 385
 386     var_Create (mp, "fullscreen", VLC_VAR_BOOL);
 387     var_Create (mp, "autoscale", VLC_VAR_BOOL);
 388     var_SetBool (mp, "autoscale", true);
 389     var_Create (mp, "scale", VLC_VAR_FLOAT);
 390     var_SetFloat (mp, "scale", 1.);
 391     var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
 392     var_Create (mp, "crop", VLC_VAR_STRING);
 393     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
 394     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 395
 396     var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
 397
 398     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
 399     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 400     var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 401     var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 402     var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 403     var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 404     var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 405     var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 406     var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 407
 408     var_Create (mp, "logo-file", VLC_VAR_STRING);
 409     var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 410     var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 411     var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 412     var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 413     var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 414     var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 415
 416     var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 417     var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 418     var_Create (mp, "hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 419     var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 420     var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 421
 422      /* Audio */
 423     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 424     var_Create (mp, "volume-muted", VLC_VAR_BOOL);
 425     var_Create (mp, "saved-volume", VLC_VAR_INTEGER);
 426     var_Create (mp, "volume-change", VLC_VAR_VOID);
 427     var_Create (mp, "find-input-callback", VLC_VAR_ADDRESS);
 428     var_SetAddress (mp, "find-input-callback", find_input);
 429
 430     mp->p_md = NULL;
 431     mp->state = libvlc_NothingSpecial;
 432     mp->p_libvlc_instance = instance;
 433     mp->input.p_thread = NULL;
 434     mp->input.p_resource = NULL;
 435     vlc_mutex_init (&mp->input.lock);
 436     mp->i_refcount = 1;
 437     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 438     if (unlikely(mp->p_event_manager == NULL))
 439     {
 440         vlc_object_release(mp);
 441         return NULL;
 442     }
 443     vlc_mutex_init(&mp->object_lock);
 444
 445     register_event(mp, NothingSpecial);
 446     register_event(mp, Opening);
 447     register_event(mp, Buffering);
 448     register_event(mp, Playing);
 449     register_event(mp, Paused);
 450     register_event(mp, Stopped);
 451     register_event(mp, Forward);
 452     register_event(mp, Backward);
 453     register_event(mp, EndReached);
 454     register_event(mp, EncounteredError);
 455     register_event(mp, SeekableChanged);
 456
 457     register_event(mp, PositionChanged);
 458     register_event(mp, TimeChanged);
 459     register_event(mp, LengthChanged);
 460     register_event(mp, TitleChanged);
 461     register_event(mp, PausableChanged);
 462
 463     /* Snapshot initialization */
 464     register_event(mp, SnapshotTaken);
 465
 466     register_event(mp, MediaChanged);
 467
 468     /* Attach a var callback to the global object to provide the glue between
 469      * vout_thread that generates the event and media_player that re-emits it
 470      * with its own event manager
 471      *
 472      * FIXME: It's unclear why we want to put this in public API, and why we
 473      * want to expose it in such a limiting and ugly way.
 474      */
 475     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 476
 477     libvlc_retain(instance);
 478     return mp;
 479 }
 480
 481 /**************************************************************************
 482  * Create a Media Instance object with a media descriptor.
 483  **************************************************************************/
 484 libvlc_media_player_t *
 485 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 486 {
 487     libvlc_media_player_t * p_mi;
 488
 489     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 490     if( !p_mi )
 491         return NULL;
 492
 493     libvlc_media_retain( p_md );
 494     p_mi->p_md = p_md;
 495
 496     return p_mi;
 497 }
 498
 499 /**************************************************************************
 500  * Destroy a Media Instance object (libvlc internal)
 501  *
 502  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 503  **************************************************************************/
 504 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 505 {
 506     assert( p_mi );
 507
 508     /* Detach Callback from the main libvlc object */
 509     var_DelCallback( p_mi->p_libvlc,
 510                      "snapshot-file", snapshot_was_taken, p_mi );
 511
 512     /* No need for lock_input() because no other threads knows us anymore */
 513     if( p_mi->input.p_thread )
 514         release_input_thread(p_mi, true);
 515     if( p_mi->input.p_resource )
 516     {
 517         input_resource_Terminate( p_mi->input.p_resource );
 518         input_resource_Release( p_mi->input.p_resource );
 519         p_mi->input.p_resource = NULL;
 520     }
 521     vlc_mutex_destroy( &p_mi->input.lock );
 522
 523     libvlc_event_manager_release( p_mi->p_event_manager );
 524     libvlc_media_release( p_mi->p_md );
 525     vlc_mutex_destroy( &p_mi->object_lock );
 526
 527     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 528     vlc_object_release( p_mi );
 529     libvlc_release(instance);
 530 }
 531
 532 /**************************************************************************
 533  * Release a Media Instance object.
 534  *
 535  * Function does the locking.
 536  **************************************************************************/
 537 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 538 {
 539     bool destroy;
 540
 541     assert( p_mi );
 542     lock(p_mi);
 543     destroy = !--p_mi->i_refcount;
 544     unlock(p_mi);
 545
 546     if( destroy )
 547         libvlc_media_player_destroy( p_mi );
 548 }
 549
 550 /**************************************************************************
 551  * Retain a Media Instance object.
 552  *
 553  * Caller must hold the lock.
 554  **************************************************************************/
 555 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 556 {
 557     assert( p_mi );
 558
 559     lock(p_mi);
 560     p_mi->i_refcount++;
 561     unlock(p_mi);
 562 }
 563
 564 /**************************************************************************
 565  * Set the Media descriptor associated with the instance.
 566  *
 567  * Enter without lock -- function will lock the object.
 568  **************************************************************************/
 569 void libvlc_media_player_set_media(
 570                             libvlc_media_player_t *p_mi,
 571                             libvlc_media_t *p_md )
 572 {
 573     lock_input(p_mi);
 574
 575     /* FIXME I am not sure if it is a user request or on die(eof/error)
 576      * request here */
 577     release_input_thread( p_mi,
 578                           p_mi->input.p_thread &&
 579                           !p_mi->input.p_thread->b_eof &&
 580                           !p_mi->input.p_thread->b_error );
 581
 582     lock( p_mi );
 583     set_state( p_mi, libvlc_NothingSpecial, true );
 584     unlock_input( p_mi );
 585
 586     libvlc_media_release( p_mi->p_md );
 587
 588     if( !p_md )
 589     {
 590         p_mi->p_md = NULL;
 591         unlock(p_mi);
 592         return; /* It is ok to pass a NULL md */
 593     }
 594
 595     libvlc_media_retain( p_md );
 596     p_mi->p_md = p_md;
 597
 598     /* The policy here is to ignore that we were created using a different
 599      * libvlc_instance, because we don't really care */
 600     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 601
 602     unlock(p_mi);
 603
 604     /* Send an event for the newly available media */
 605     libvlc_event_t event;
 606     event.type = libvlc_MediaPlayerMediaChanged;
 607     event.u.media_player_media_changed.new_media = p_md;
 608     libvlc_event_send( p_mi->p_event_manager, &event );
 609
 610 }
 611
 612 /**************************************************************************
 613  * Get the Media descriptor associated with the instance.
 614  **************************************************************************/
 615 libvlc_media_t *
 616 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 617 {
 618     libvlc_media_t *p_m;
 619
 620     lock(p_mi);
 621     p_m = p_mi->p_md;
 622     if( p_m )
 623         libvlc_media_retain( p_mi->p_md );
 624     unlock(p_mi);
 625     return p_mi->p_md;
 626 }
 627
 628 /**************************************************************************
 629  * Get the event Manager.
 630  **************************************************************************/
 631 libvlc_event_manager_t *
 632 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 633 {
 634     return p_mi->p_event_manager;
 635 }
 636
 637 /**************************************************************************
 638  * Tell media player to start playing.
 639  **************************************************************************/
 640 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 641 {
 642     lock_input( p_mi );
 643
 644     input_thread_t *p_input_thread = p_mi->input.p_thread;
 645     if( p_input_thread )
 646     {
 647         /* A thread already exists, send it a play message */
 648         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 649         unlock_input( p_mi );
 650         return 0;
 651     }
 652
 653     /* Ignore previous exception */
 654     lock(p_mi);
 655
 656     if( !p_mi->p_md )
 657     {
 658         unlock(p_mi);
 659         unlock_input( p_mi );
 660         libvlc_printerr( "No associated media descriptor" );
 661         return -1;
 662     }
 663
 664     if( !p_mi->input.p_resource )
 665         p_mi->input.p_resource = input_resource_New( VLC_OBJECT( p_mi ) );
 666     p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
 667                                    p_mi->input.p_resource );
 668     unlock(p_mi);
 669     if( !p_input_thread )
 670     {
 671         unlock_input(p_mi);
 672         libvlc_printerr( "Not enough memory" );
 673         return -1;
 674     }
 675
 676     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 677     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 678     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 679
 680     if( input_Start( p_input_thread ) )
 681     {
 682         unlock_input(p_mi);
 683         var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 684         var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 685         var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 686         vlc_object_release( p_input_thread );
 687         libvlc_printerr( "Input initialization failure" );
 688         return -1;
 689     }
 690     p_mi->input.p_thread = p_input_thread;
 691     unlock_input(p_mi);
 692     return 0;
 693 }
 694
 695 void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
 696 {
 697     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 698     if( !p_input_thread )
 699         return;
 700
 701     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 702     if( state == libvlc_Playing || state == libvlc_Buffering )
 703     {
 704         if( paused )
 705         {
 706             if( libvlc_media_player_can_pause( p_mi ) )
 707                 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 708             else
 709                 libvlc_media_player_stop( p_mi );
 710         }
 711     }
 712     else
 713     {
 714         if( !paused )
 715             input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 716     }
 717
 718     vlc_object_release( p_input_thread );
 719 }
 720
 721 /**************************************************************************
 722  * Toggle pause.
 723  **************************************************************************/
 724 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 725 {
 726     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 727     bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
 728
 729     libvlc_media_player_set_pause( p_mi, playing );
 730 }
 731
 732 /**************************************************************************
 733  * Tells whether the media player is currently playing.
 734  *
 735  * Enter with lock held.
 736  **************************************************************************/
 737 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 738 {
 739     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 740     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 741 }
 742
 743 /**************************************************************************
 744  * Stop playing.
 745  **************************************************************************/
 746 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 747 {
 748     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 749
 750     lock_input(p_mi);
 751     release_input_thread( p_mi, true ); /* This will stop the input thread */
 752
 753     /* Force to go to stopped state, in case we were in Ended, or Error
 754      * state. */
 755     if( state != libvlc_Stopped )
 756     {
 757         set_state( p_mi, libvlc_Stopped, false );
 758
 759         /* Construct and send the event */
 760         libvlc_event_t event;
 761         event.type = libvlc_MediaPlayerStopped;
 762         libvlc_event_send( p_mi->p_event_manager, &event );
 763     }
 764
 765     if( p_mi->input.p_resource != NULL )
 766         input_resource_TerminateVout( p_mi->input.p_resource );
 767     unlock_input(p_mi);
 768 }
 769
 770 /**************************************************************************
 771  * set_nsobject
 772  **************************************************************************/
 773 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 774                                         void * drawable )
 775 {
 776     assert (p_mi != NULL);
 777 #ifdef __APPLE__
 778     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 779 #else
 780     (void) p_mi; (void)drawable;
 781 #endif
 782 }
 783
 784 /**************************************************************************
 785  * get_nsobject
 786  **************************************************************************/
 787 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 788 {
 789     assert (p_mi != NULL);
 790 #ifdef __APPLE__
 791     return var_GetAddress (p_mi, "drawable-nsobject");
 792 #else
 793     return NULL;
 794 #endif
 795 }
 796
 797 /**************************************************************************
 798  * set_agl
 799  **************************************************************************/
 800 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 801                                   uint32_t drawable )
 802 {
 803 #ifdef __APPLE__
 804     var_SetInteger (p_mi, "drawable-agl", drawable);
 805 #else
 806     (void) p_mi; (void)drawable;
 807 #endif
 808 }
 809
 810 /**************************************************************************
 811  * get_agl
 812  **************************************************************************/
 813 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 814 {
 815     assert (p_mi != NULL);
 816 #ifdef __APPLE__
 817     return var_GetInteger (p_mi, "drawable-agl");
 818 #else
 819     return 0;
 820 #endif
 821 }
 822
 823 /**************************************************************************
 824  * set_xwindow
 825  **************************************************************************/
 826 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 827                                       uint32_t drawable )
 828 {
 829     assert (p_mi != NULL);
 830
 831     var_SetString (p_mi, "vout", drawable ? "xid" : "any");
 832     var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
 833     var_SetInteger (p_mi, "drawable-xid", drawable);
 834 }
 835
 836 /**************************************************************************
 837  * get_xwindow
 838  **************************************************************************/
 839 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 840 {
 841     return var_GetInteger (p_mi, "drawable-xid");
 842 }
 843
 844 /**************************************************************************
 845  * set_hwnd
 846  **************************************************************************/
 847 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 848                                    void *drawable )
 849 {
 850     assert (p_mi != NULL);
 851 #ifdef WIN32
 852     var_SetString (p_mi, "window",
 853                    (drawable != NULL) ? "embed-hwnd,any" : "");
 854     var_SetAddress (p_mi, "drawable-hwnd", drawable);
 855 #else
 856     (void) p_mi; (void) drawable;
 857 #endif
 858 }
 859
 860 /**************************************************************************
 861  * get_hwnd
 862  **************************************************************************/
 863 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 864 {
 865     assert (p_mi != NULL);
 866 #ifdef WIN32
 867     return var_GetAddress (p_mi, "drawable-hwnd");
 868 #else
 869     return NULL;
 870 #endif
 871 }
 872
 873 /**************************************************************************
 874  * Getters for stream information
 875  **************************************************************************/
 876 libvlc_time_t libvlc_media_player_get_length(
 877                              libvlc_media_player_t *p_mi )
 878 {
 879     input_thread_t *p_input_thread;
 880     libvlc_time_t i_time;
 881
 882     p_input_thread = libvlc_get_input_thread ( p_mi );
 883     if( !p_input_thread )
 884         return -1;
 885
 886     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
 887     vlc_object_release( p_input_thread );
 888
 889     return i_time;
 890 }
 891
 892 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
 893 {
 894     input_thread_t *p_input_thread;
 895     libvlc_time_t i_time;
 896
 897     p_input_thread = libvlc_get_input_thread ( p_mi );
 898     if( !p_input_thread )
 899         return -1;
 900
 901     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
 902     vlc_object_release( p_input_thread );
 903     return i_time;
 904 }
 905
 906 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
 907                                    libvlc_time_t i_time )
 908 {
 909     input_thread_t *p_input_thread;
 910
 911     p_input_thread = libvlc_get_input_thread ( p_mi );
 912     if( !p_input_thread )
 913         return;
 914
 915     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
 916     vlc_object_release( p_input_thread );
 917 }
 918
 919 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
 920                                        float position )
 921 {
 922     input_thread_t *p_input_thread;
 923
 924     p_input_thread = libvlc_get_input_thread ( p_mi );
 925     if( !p_input_thread )
 926         return;
 927
 928     var_SetFloat( p_input_thread, "position", position );
 929     vlc_object_release( p_input_thread );
 930 }
 931
 932 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
 933 {
 934     input_thread_t *p_input_thread;
 935     float f_position;
 936
 937     p_input_thread = libvlc_get_input_thread ( p_mi );
 938     if( !p_input_thread )
 939         return -1.0;
 940
 941     f_position = var_GetFloat( p_input_thread, "position" );
 942     vlc_object_release( p_input_thread );
 943
 944     return f_position;
 945 }
 946
 947 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
 948                                       int chapter )
 949 {
 950     input_thread_t *p_input_thread;
 951
 952     p_input_thread = libvlc_get_input_thread ( p_mi );
 953     if( !p_input_thread )
 954         return;
 955
 956     var_SetInteger( p_input_thread, "chapter", chapter );
 957     vlc_object_release( p_input_thread );
 958 }
 959
 960 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
 961 {
 962     input_thread_t *p_input_thread;
 963     int i_chapter;
 964
 965     p_input_thread = libvlc_get_input_thread ( p_mi );
 966     if( !p_input_thread )
 967         return -1;
 968
 969     i_chapter = var_GetInteger( p_input_thread, "chapter" );
 970     vlc_object_release( p_input_thread );
 971
 972     return i_chapter;
 973 }
 974
 975 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
 976 {
 977     input_thread_t *p_input_thread;
 978     vlc_value_t val;
 979
 980     p_input_thread = libvlc_get_input_thread ( p_mi );
 981     if( !p_input_thread )
 982         return -1;
 983
 984     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 985     vlc_object_release( p_input_thread );
 986
 987     return val.i_int;
 988 }
 989
 990 int libvlc_media_player_get_chapter_count_for_title(
 991                                  libvlc_media_player_t *p_mi,
 992                                  int i_title )
 993 {
 994     input_thread_t *p_input_thread;
 995     vlc_value_t val;
 996
 997     p_input_thread = libvlc_get_input_thread ( p_mi );
 998     if( !p_input_thread )
 999         return -1;
1000
1001     char *psz_name;
1002     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
1003     {
1004         vlc_object_release( p_input_thread );
1005         return -1;
1006     }
1007     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1008     vlc_object_release( p_input_thread );
1009     free( psz_name );
1010
1011     return val.i_int;
1012 }
1013
1014 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1015                                     int i_title )
1016 {
1017     input_thread_t *p_input_thread;
1018
1019     p_input_thread = libvlc_get_input_thread ( p_mi );
1020     if( !p_input_thread )
1021         return;
1022
1023     var_SetInteger( p_input_thread, "title", i_title );
1024     vlc_object_release( p_input_thread );
1025
1026     //send event
1027     libvlc_event_t event;
1028     event.type = libvlc_MediaPlayerTitleChanged;
1029     event.u.media_player_title_changed.new_title = i_title;
1030     libvlc_event_send( p_mi->p_event_manager, &event );
1031 }
1032
1033 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1034 {
1035     input_thread_t *p_input_thread;
1036     int i_title;
1037
1038     p_input_thread = libvlc_get_input_thread ( p_mi );
1039     if( !p_input_thread )
1040         return -1;
1041
1042     i_title = var_GetInteger( p_input_thread, "title" );
1043     vlc_object_release( p_input_thread );
1044
1045     return i_title;
1046 }
1047
1048 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1049 {
1050     input_thread_t *p_input_thread;
1051     vlc_value_t val;
1052
1053     p_input_thread = libvlc_get_input_thread ( p_mi );
1054     if( !p_input_thread )
1055         return -1;
1056
1057     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1058     vlc_object_release( p_input_thread );
1059
1060     return val.i_int;
1061 }
1062
1063 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1064 {
1065     input_thread_t *p_input_thread;
1066
1067     p_input_thread = libvlc_get_input_thread ( p_mi );
1068     if( !p_input_thread )
1069         return;
1070
1071     int i_type = var_Type( p_input_thread, "next-chapter" );
1072     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1073                             "next-chapter":"next-title", true );
1074
1075     vlc_object_release( p_input_thread );
1076 }
1077
1078 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1079 {
1080     input_thread_t *p_input_thread;
1081
1082     p_input_thread = libvlc_get_input_thread ( p_mi );
1083     if( !p_input_thread )
1084         return;
1085
1086     int i_type = var_Type( p_input_thread, "next-chapter" );
1087     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1088                             "prev-chapter":"prev-title", true );
1089
1090     vlc_object_release( p_input_thread );
1091 }
1092
1093 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1094 {
1095     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1096     double f_fps = 0.0;
1097
1098     if( p_input_thread )
1099     {
1100         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1101             f_fps = 0.0;
1102         vlc_object_release( p_input_thread );
1103     }
1104     return f_fps;
1105 }
1106
1107 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1108 {
1109     bool b_will_play;
1110     input_thread_t *p_input_thread =
1111                             libvlc_get_input_thread ( p_mi );
1112     if ( !p_input_thread )
1113         return false;
1114
1115     b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1116     vlc_object_release( p_input_thread );
1117
1118     return b_will_play;
1119 }
1120
1121 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1122 {
1123     if (rate < 0.)
1124     {
1125         libvlc_printerr ("Playing backward not supported");
1126         return -1;
1127     }
1128
1129     var_SetFloat (p_mi, "rate", rate);
1130
1131     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1132     if( !p_input_thread )
1133         return 0;
1134     var_SetFloat( p_input_thread, "rate", rate );
1135     vlc_object_release( p_input_thread );
1136     return 0;
1137 }
1138
1139 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1140 {
1141     return var_GetFloat (p_mi, "rate");
1142 }
1143
1144 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1145 {
1146     lock(p_mi);
1147     libvlc_state_t state = p_mi->state;
1148     unlock(p_mi);
1149     return state;
1150 }
1151
1152 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1153 {
1154     input_thread_t *p_input_thread;
1155     bool b_seekable;
1156
1157     p_input_thread = libvlc_get_input_thread ( p_mi );
1158     if ( !p_input_thread )
1159         return false;
1160     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1161     vlc_object_release( p_input_thread );
1162
1163     return b_seekable;
1164 }
1165
1166 /* internal function, used by audio, video */
1167 libvlc_track_description_t *
1168         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1169                                       const char *psz_variable )
1170 {
1171     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1172     libvlc_track_description_t *p_track_description = NULL,
1173                                *p_actual, *p_previous;
1174
1175     if( !p_input )
1176         return NULL;
1177
1178     vlc_value_t val_list, text_list;
1179     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1180
1181     /* no tracks */
1182     if( val_list.p_list->i_count <= 0 )
1183         goto end;
1184
1185     p_track_description = ( libvlc_track_description_t * )
1186         malloc( sizeof( libvlc_track_description_t ) );
1187     if ( !p_track_description )
1188     {
1189         libvlc_printerr( "Not enough memory" );
1190         goto end;
1191     }
1192     p_actual = p_track_description;
1193     p_previous = NULL;
1194     for( int i = 0; i < val_list.p_list->i_count; i++ )
1195     {
1196         if( !p_actual )
1197         {
1198             p_actual = ( libvlc_track_description_t * )
1199                 malloc( sizeof( libvlc_track_description_t ) );
1200             if ( !p_actual )
1201             {
1202                 libvlc_track_description_release( p_track_description );
1203                 libvlc_printerr( "Not enough memory" );
1204                 goto end;
1205             }
1206         }
1207         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1208         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1209         p_actual->p_next = NULL;
1210         if( p_previous )
1211             p_previous->p_next = p_actual;
1212         p_previous = p_actual;
1213         p_actual =  NULL;
1214     }
1215
1216 end:
1217     var_FreeList( &val_list, &text_list );
1218     vlc_object_release( p_input );
1219
1220     return p_track_description;
1221 }
1222
1223 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1224 {
1225     libvlc_track_description_t *p_actual, *p_before;
1226     p_actual = p_td;
1227
1228     while ( p_actual )
1229     {
1230         free( p_actual->psz_name );
1231         p_before = p_actual;
1232         p_actual = p_before->p_next;
1233         free( p_before );
1234     }
1235 }
1236
1237 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1238 {
1239     input_thread_t *p_input_thread;
1240     bool b_can_pause;
1241
1242     p_input_thread = libvlc_get_input_thread ( p_mi );
1243     if ( !p_input_thread )
1244         return false;
1245     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1246     vlc_object_release( p_input_thread );
1247
1248     return b_can_pause;
1249 }
1250
1251 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1252 {
1253     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1254     if( p_input_thread != NULL )
1255     {
1256         var_TriggerCallback( p_input_thread, "frame-next" );
1257         vlc_object_release( p_input_thread );
1258     }
1259 }