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

   1 /*****************************************************************************
   2  * core.c: Core functions : init, playlist, stream management
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Olivier Aubert <olivier.aubert@liris.univ-lyon1.fr>
   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 #include <mediacontrol_internal.h>
  25 #include <vlc/mediacontrol.h>
  26
  27 #include <vlc/libvlc.h>
  28 #include <vlc/intf.h>
  29 #include <vlc/vout.h>
  30 #include <vlc/aout.h>
  31 #include <vlc_demux.h>
  32
  33 #include <vlc_osd.h>
  34
  35 #define HAS_SNAPSHOT 1
  36
  37 #ifdef HAS_SNAPSHOT
  38 #include <snapshot.h>
  39 #endif
  40
  41 #include <stdlib.h>                                      /* malloc(), free() */
  42 #include <string.h>
  43
  44 #include <errno.h>                                                 /* ENOMEM */
  45 #include <stdio.h>
  46 #include <ctype.h>
  47
  48 #ifdef HAVE_UNISTD_H
  49 #    include <unistd.h>
  50 #endif
  51 #ifdef HAVE_SYS_TIME_H
  52 #    include <sys/time.h>
  53 #endif
  54 #ifdef HAVE_SYS_TYPES_H
  55 #    include <sys/types.h>
  56 #endif
  57
  58 mediacontrol_Instance* mediacontrol_new( int argc, char** argv, mediacontrol_Exception *exception )
  59 {
  60     mediacontrol_Instance* retval;
  61     libvlc_exception_t ex;
  62     char** ppsz_argv = NULL;
  63     int i_index;
  64
  65     libvlc_exception_init( &ex );
  66     exception=mediacontrol_exception_init( exception );
  67
  68     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
  69     if( !retval )
  70         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  71
  72     /* Prepend a dummy argv[0] so that users of the API do not have to
  73        do it themselves, and can simply provide the args list. */
  74     ppsz_argv = malloc( ( argc + 2 ) * sizeof( char * ) ) ;
  75     if( ! ppsz_argv )
  76         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  77
  78     ppsz_argv[0] = strdup("vlc");
  79     for ( i_index = 0; i_index < argc; i_index++ )
  80         ppsz_argv[i_index + 1] = argv[i_index];
  81     ppsz_argv[argc + 1] = NULL;
  82
  83     retval->p_instance = libvlc_new( argc + 1, ppsz_argv, &ex );
  84     retval->p_playlist = retval->p_instance->p_libvlc_int->p_playlist;
  85     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
  86     return retval;
  87 };
  88
  89 void
  90 mediacontrol_exit( mediacontrol_Instance *self )
  91 {
  92     libvlc_exception_t ex;
  93     libvlc_exception_init( &ex );
  94
  95     libvlc_destroy( self->p_instance, &ex );
  96 }
  97
  98 libvlc_instance_t*
  99 mediacontrol_get_libvlc_instance( mediacontrol_Instance *self )
 100 {
 101   return self->p_instance;
 102 }
 103
 104 mediacontrol_Instance *
 105 mediacontrol_new_from_instance( libvlc_instance_t* p_instance,
 106                                 mediacontrol_Exception *exception )
 107 {
 108   mediacontrol_Instance* retval;
 109
 110   retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
 111   if( ! retval )
 112   {
 113       RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 114   }
 115   retval->p_instance = p_instance;
 116   retval->p_playlist = retval->p_instance->p_libvlc_int->p_playlist;
 117   return retval;
 118 }
 119
 120 /**************************************************************************
 121  * Playback management
 122  **************************************************************************/
 123 mediacontrol_Position*
 124 mediacontrol_get_media_position( mediacontrol_Instance *self,
 125                                  const mediacontrol_PositionOrigin an_origin,
 126                                  const mediacontrol_PositionKey a_key,
 127                                  mediacontrol_Exception *exception )
 128 {
 129     mediacontrol_Position* retval = NULL;
 130     libvlc_exception_t ex;
 131     vlc_int64_t pos;
 132     libvlc_input_t * p_input;
 133
 134     exception = mediacontrol_exception_init( exception );
 135     libvlc_exception_init( &ex );
 136
 137     retval = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
 138     retval->origin = an_origin;
 139     retval->key = a_key;
 140
 141     p_input = libvlc_playlist_get_input( self->p_instance, &ex);
 142     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 143
 144     if(  an_origin != mediacontrol_AbsolutePosition )
 145     {
 146         libvlc_input_free( p_input );
 147         /* Relative or ModuloPosition make no sense */
 148         RAISE_NULL( mediacontrol_PositionOriginNotSupported,
 149                     "Only absolute position is valid." );
 150     }
 151
 152     /* We are asked for an AbsolutePosition. */
 153     pos = libvlc_input_get_time( p_input, &ex );
 154
 155     if( a_key == mediacontrol_MediaTime )
 156     {
 157         retval->value = pos;
 158     }
 159     else
 160     {
 161         if( ! self->p_playlist->p_input )
 162         {
 163             libvlc_input_free( p_input );
 164             RAISE_NULL( mediacontrol_InternalException,
 165                         "No input" );
 166         }
 167         retval->value = mediacontrol_unit_convert( self->p_playlist->p_input,
 168                                                    mediacontrol_MediaTime,
 169                                                    a_key,
 170                                                    pos );
 171     }
 172     libvlc_input_free( p_input );
 173     return retval;
 174 }
 175
 176 /* Sets the media position */
 177 void
 178 mediacontrol_set_media_position( mediacontrol_Instance *self,
 179                                  const mediacontrol_Position * a_position,
 180                                  mediacontrol_Exception *exception )
 181 {
 182     libvlc_input_t * p_input;
 183     libvlc_exception_t ex;
 184     vlc_int64_t i_pos;
 185
 186     libvlc_exception_init( &ex );
 187     mediacontrol_exception_init( exception );
 188
 189     p_input = libvlc_playlist_get_input( self->p_instance, &ex);
 190     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 191
 192     i_pos = mediacontrol_position2microsecond( self->p_playlist->p_input, a_position );
 193     libvlc_input_set_time( p_input, i_pos / 1000, &ex );
 194     libvlc_input_free( p_input );
 195     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 196 }
 197
 198 /* Starts playing a stream */
 199 /*
 200  * Known issues: since moving in the playlist using playlist_Next
 201  * or playlist_Prev implies starting to play items, the a_position
 202  * argument will be only honored for the 1st item in the list.
 203  *
 204  * XXX:FIXME split moving in the playlist and playing items two
 205  * different actions or make playlist_<Next|Prev> accept a time
 206  * value to start to play from.
 207  */
 208 void
 209 mediacontrol_start( mediacontrol_Instance *self,
 210                     const mediacontrol_Position * a_position,
 211                     mediacontrol_Exception *exception )
 212 {
 213     playlist_t * p_playlist = self->p_playlist;
 214
 215     exception = mediacontrol_exception_init( exception );
 216     if( ! p_playlist )
 217     {
 218         RAISE( mediacontrol_PlaylistException, "No available playlist" );
 219         return;
 220     }
 221
 222     vlc_mutex_lock( &p_playlist->object_lock );
 223     if( p_playlist->i_size )
 224     {
 225         int i_from;
 226         char *psz_from = NULL;
 227
 228         psz_from = ( char * )malloc( 20 * sizeof( char ) );
 229         if( psz_from && p_playlist->status.p_item )
 230         {
 231             i_from = mediacontrol_position2microsecond( p_playlist->p_input, a_position ) / 1000000;
 232
 233             /* Set start time */
 234             snprintf( psz_from, 20, "start-time=%i", i_from );
 235             input_ItemAddOption( p_playlist->status.p_item->p_input, psz_from );
 236             free( psz_from );
 237         }
 238
 239         vlc_mutex_unlock( &p_playlist->object_lock );
 240         playlist_Play( p_playlist );
 241     }
 242     else
 243     {
 244         RAISE( mediacontrol_PlaylistException, "Empty playlist." );
 245         vlc_mutex_unlock( &p_playlist->object_lock );
 246     }
 247 }
 248
 249 void
 250 mediacontrol_pause( mediacontrol_Instance *self,
 251                     const mediacontrol_Position * a_position,
 252                     mediacontrol_Exception *exception )
 253 {
 254     input_thread_t *p_input = self->p_playlist->p_input;
 255
 256     /* FIXME: use the a_position parameter */
 257     exception=mediacontrol_exception_init( exception );
 258     if( p_input != NULL )
 259     {
 260         var_SetInteger( p_input, "state", PAUSE_S );
 261     }
 262     else
 263     {
 264         RAISE( mediacontrol_InternalException, "No input" );
 265     }
 266 }
 267
 268 void
 269 mediacontrol_resume( mediacontrol_Instance *self,
 270                      const mediacontrol_Position * a_position,
 271                      mediacontrol_Exception *exception )
 272 {
 273     input_thread_t *p_input = self->p_playlist->p_input;
 274
 275     /* FIXME: use the a_position parameter */
 276     exception=mediacontrol_exception_init( exception );
 277     if( p_input != NULL )
 278     {
 279         var_SetInteger( p_input, "state", PAUSE_S );
 280     }
 281     else
 282     {
 283         RAISE( mediacontrol_InternalException, "No input" );
 284     }
 285 }
 286
 287 void
 288 mediacontrol_stop( mediacontrol_Instance *self,
 289                    const mediacontrol_Position * a_position,
 290                    mediacontrol_Exception *exception )
 291 {
 292     /* FIXME: use the a_position parameter */
 293     exception=mediacontrol_exception_init( exception );
 294     if( !self->p_playlist )
 295     {
 296         RAISE( mediacontrol_PlaylistException, "No playlist" );
 297     }
 298     else
 299         playlist_Stop( self->p_playlist );
 300 }
 301
 302 /**************************************************************************
 303  * Playlist management
 304  **************************************************************************/
 305
 306 void
 307 mediacontrol_playlist_add_item( mediacontrol_Instance *self,
 308                                 const char * psz_file,
 309                                 mediacontrol_Exception *exception )
 310 {
 311     libvlc_exception_t ex;
 312
 313     mediacontrol_exception_init( exception );
 314     libvlc_exception_init( &ex );
 315
 316     libvlc_playlist_add( self->p_instance, psz_file, psz_file, &ex );
 317     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 318 }
 319
 320 void
 321 mediacontrol_playlist_next_item( mediacontrol_Instance *self,
 322                                  mediacontrol_Exception *exception )
 323 {
 324     libvlc_exception_t ex;
 325
 326     mediacontrol_exception_init( exception );
 327     libvlc_exception_init( &ex );
 328
 329     libvlc_playlist_next( self->p_instance, &ex );
 330     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 331 }
 332
 333 void
 334 mediacontrol_playlist_clear( mediacontrol_Instance *self,
 335                              mediacontrol_Exception *exception )
 336 {
 337     libvlc_exception_t ex;
 338
 339     mediacontrol_exception_init( exception );
 340     libvlc_exception_init( &ex );
 341
 342     libvlc_playlist_clear( self->p_instance, &ex );
 343     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 344 }
 345
 346 mediacontrol_PlaylistSeq *
 347 mediacontrol_playlist_get_list( mediacontrol_Instance *self,
 348                                 mediacontrol_Exception *exception )
 349 {
 350     mediacontrol_PlaylistSeq *retval = NULL;
 351     int i_index;
 352     playlist_t * p_playlist = self->p_playlist;
 353     int i_playlist_size;
 354
 355     exception=mediacontrol_exception_init( exception );
 356     if( !p_playlist )
 357     {
 358         RAISE( mediacontrol_PlaylistException, "No playlist" );
 359         return NULL;
 360     }
 361
 362     vlc_mutex_lock( &p_playlist->object_lock );
 363     i_playlist_size = p_playlist->i_size;
 364
 365     retval = mediacontrol_PlaylistSeq__alloc( i_playlist_size );
 366
 367     for( i_index = 0 ; i_index < i_playlist_size ; i_index++ )
 368     {
 369         retval->data[i_index] = strdup( p_playlist->pp_items[i_index]->p_input->psz_uri );
 370     }
 371     vlc_mutex_unlock( &p_playlist->object_lock );
 372
 373     return retval;
 374 }
 375
 376 /***************************************************************************
 377  * Status feedback
 378  ***************************************************************************/
 379
 380 mediacontrol_StreamInformation *
 381 mediacontrol_get_stream_information( mediacontrol_Instance *self,
 382                                      mediacontrol_PositionKey a_key,
 383                                      mediacontrol_Exception *exception )
 384 {
 385     mediacontrol_StreamInformation *retval = NULL;
 386     input_thread_t *p_input = self->p_playlist->p_input;
 387     vlc_value_t val;
 388
 389     retval = ( mediacontrol_StreamInformation* )
 390                             malloc( sizeof( mediacontrol_StreamInformation ) );
 391     if( ! retval )
 392     {
 393         RAISE( mediacontrol_InternalException, "Out of memory" );
 394         return NULL;
 395     }
 396
 397     if( ! p_input )
 398     {
 399         /* No p_input defined */
 400         retval->streamstatus = mediacontrol_UndefinedStatus;
 401         retval->url          = strdup( "None" );
 402         retval->position     = 0;
 403         retval->length       = 0;
 404     }
 405     else
 406     {
 407         switch( var_GetInteger( p_input, "state" ) )
 408         {
 409         case PLAYING_S     :
 410             retval->streamstatus = mediacontrol_PlayingStatus;
 411             break;
 412         case PAUSE_S       :
 413             retval->streamstatus = mediacontrol_PauseStatus;
 414             break;
 415         case INIT_S        :
 416             retval->streamstatus = mediacontrol_InitStatus;
 417             break;
 418         case END_S         :
 419             retval->streamstatus = mediacontrol_EndStatus;
 420             break;
 421         default :
 422             retval->streamstatus = mediacontrol_UndefinedStatus;
 423             break;
 424         }
 425
 426         retval->url = strdup( p_input->input.p_item->psz_uri );
 427
 428         /* TIME and LENGTH are in microseconds. We want them in ms */
 429         var_Get( p_input, "time", &val);
 430         retval->position = val.i_time / 1000;
 431
 432         var_Get( p_input, "length", &val);
 433         retval->length = val.i_time / 1000;
 434
 435         retval->position = mediacontrol_unit_convert( p_input,
 436                                          mediacontrol_MediaTime, a_key,
 437                                          retval->position );
 438         retval->length   = mediacontrol_unit_convert( p_input,
 439                                          mediacontrol_MediaTime, a_key,
 440                                          retval->length );
 441     }
 442     return retval;
 443 }