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 <vlc/vlc.h>
  25 #include <vlc/mediacontrol.h>
  26
  27 #include <vlc/libvlc.h>
  28 #include <vlc_interface.h>
  29 #include <vlc_playlist.h>
  30
  31 #include <vlc_vout.h>
  32 #include <vlc_aout.h>
  33 #include <vlc_input.h>
  34 #include <vlc_osd.h>
  35 #include "mediacontrol_internal.h"
  36
  37 #include <stdlib.h>                                      /* malloc(), free() */
  38 #include <string.h>
  39
  40 #include <errno.h>                                                 /* ENOMEM */
  41 #include <stdio.h>
  42 #include <ctype.h>
  43
  44 #ifdef HAVE_UNISTD_H
  45 #    include <unistd.h>
  46 #endif
  47 #ifdef HAVE_SYS_TIME_H
  48 #    include <sys/time.h>
  49 #endif
  50 #ifdef HAVE_SYS_TYPES_H
  51 #    include <sys/types.h>
  52 #endif
  53
  54 mediacontrol_Instance* mediacontrol_new( int argc, char** argv, mediacontrol_Exception *exception )
  55 {
  56     mediacontrol_Instance* retval;
  57     libvlc_exception_t ex;
  58     char** ppsz_argv = NULL;
  59     int i_index;
  60
  61     libvlc_exception_init( &ex );
  62     mediacontrol_exception_init( exception );
  63
  64     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
  65     if( !retval )
  66         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  67
  68     /* Prepend a dummy argv[0] so that users of the API do not have to
  69        do it themselves, and can simply provide the args list. */
  70     ppsz_argv = malloc( ( argc + 2 ) * sizeof( char * ) ) ;
  71     if( ! ppsz_argv )
  72         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  73
  74     ppsz_argv[0] = strdup("vlc");
  75     for ( i_index = 0; i_index < argc; i_index++ )
  76         ppsz_argv[i_index + 1] = argv[i_index];
  77     ppsz_argv[argc + 1] = NULL;
  78
  79     retval->p_instance = libvlc_new( argc + 1, ppsz_argv, &ex );
  80     retval->p_playlist = retval->p_instance->p_libvlc_int->p_playlist;
  81     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
  82     return retval;
  83 };
  84
  85 void
  86 mediacontrol_exit( mediacontrol_Instance *self )
  87 {
  88     libvlc_exception_t ex;
  89     libvlc_exception_init( &ex );
  90
  91     libvlc_destroy( self->p_instance, &ex );
  92 }
  93
  94 libvlc_instance_t*
  95 mediacontrol_get_libvlc_instance( mediacontrol_Instance *self )
  96 {
  97   return self->p_instance;
  98 }
  99
 100 mediacontrol_Instance *
 101 mediacontrol_new_from_instance( libvlc_instance_t* p_instance,
 102                                 mediacontrol_Exception *exception )
 103 {
 104   mediacontrol_Instance* retval;
 105
 106   retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
 107   if( ! retval )
 108   {
 109       RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 110   }
 111   retval->p_instance = p_instance;
 112   retval->p_playlist = retval->p_instance->p_libvlc_int->p_playlist;
 113   return retval;
 114 }
 115
 116 /**************************************************************************
 117  * Playback management
 118  **************************************************************************/
 119 mediacontrol_Position*
 120 mediacontrol_get_media_position( mediacontrol_Instance *self,
 121                                  const mediacontrol_PositionOrigin an_origin,
 122                                  const mediacontrol_PositionKey a_key,
 123                                  mediacontrol_Exception *exception )
 124 {
 125     mediacontrol_Position* retval = NULL;
 126     libvlc_exception_t ex;
 127     vlc_int64_t pos;
 128     libvlc_media_instance_t * p_mi;
 129
 130     mediacontrol_exception_init( exception );
 131     libvlc_exception_init( &ex );
 132
 133     retval = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
 134     retval->origin = an_origin;
 135     retval->key = a_key;
 136
 137     p_mi = libvlc_playlist_get_media_instance( self->p_instance, &ex);
 138     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 139
 140     if(  an_origin != mediacontrol_AbsolutePosition )
 141     {
 142         libvlc_media_instance_release( p_mi );
 143         /* Relative or ModuloPosition make no sense */
 144         RAISE_NULL( mediacontrol_PositionOriginNotSupported,
 145                     "Only absolute position is valid." );
 146     }
 147
 148     /* We are asked for an AbsolutePosition. */
 149     pos = libvlc_media_instance_get_time( p_mi, &ex );
 150
 151     if( a_key == mediacontrol_MediaTime )
 152     {
 153         retval->value = pos;
 154     }
 155     else
 156     {
 157         if( ! self->p_playlist->p_input )
 158         {
 159             libvlc_media_instance_release( p_mi );
 160             RAISE_NULL( mediacontrol_InternalException,
 161                         "No input" );
 162         }
 163         retval->value = private_mediacontrol_unit_convert( self->p_playlist->p_input,
 164                                                    mediacontrol_MediaTime,
 165                                                    a_key,
 166                                                    pos );
 167     }
 168     libvlc_media_instance_release( p_mi );
 169     return retval;
 170 }
 171
 172 /* Sets the media position */
 173 void
 174 mediacontrol_set_media_position( mediacontrol_Instance *self,
 175                                  const mediacontrol_Position * a_position,
 176                                  mediacontrol_Exception *exception )
 177 {
 178     libvlc_media_instance_t * p_mi;
 179     libvlc_exception_t ex;
 180     vlc_int64_t i_pos;
 181
 182     libvlc_exception_init( &ex );
 183     mediacontrol_exception_init( exception );
 184
 185     p_mi = libvlc_playlist_get_media_instance( self->p_instance, &ex);
 186     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 187
 188     i_pos = private_mediacontrol_position2microsecond( self->p_playlist->p_input, a_position );
 189     libvlc_media_instance_set_time( p_mi, i_pos / 1000, &ex );
 190     libvlc_media_instance_release( p_mi );
 191     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 192 }
 193
 194 /* Starts playing a stream */
 195 /*
 196  * Known issues: since moving in the playlist using playlist_Next
 197  * or playlist_Prev implies starting to play items, the a_position
 198  * argument will be only honored for the 1st item in the list.
 199  *
 200  * XXX:FIXME split moving in the playlist and playing items two
 201  * different actions or make playlist_<Next|Prev> accept a time
 202  * value to start to play from.
 203  */
 204 void
 205 mediacontrol_start( mediacontrol_Instance *self,
 206                     const mediacontrol_Position * a_position,
 207                     mediacontrol_Exception *exception )
 208 {
 209     playlist_t * p_playlist = self->p_playlist;
 210
 211     mediacontrol_exception_init( exception );
 212     if( ! p_playlist )
 213     {
 214         RAISE( mediacontrol_PlaylistException, "No available playlist" );
 215         return;
 216     }
 217
 218     vlc_mutex_lock( &p_playlist->object_lock );
 219     if( p_playlist->items.i_size )
 220     {
 221         int i_from;
 222         char *psz_from = NULL;
 223
 224         psz_from = ( char * )malloc( 20 * sizeof( char ) );
 225         if( psz_from && p_playlist->status.p_item )
 226         {
 227             i_from = private_mediacontrol_position2microsecond( p_playlist->p_input, a_position ) / 1000000;
 228
 229             /* Set start time */
 230             snprintf( psz_from, 20, "start-time=%i", i_from );
 231             input_ItemAddOption( p_playlist->status.p_item->p_input, psz_from );
 232             free( psz_from );
 233         }
 234
 235         vlc_mutex_unlock( &p_playlist->object_lock );
 236         playlist_Play( p_playlist );
 237     }
 238     else
 239     {
 240         RAISE( mediacontrol_PlaylistException, "Empty playlist." );
 241         vlc_mutex_unlock( &p_playlist->object_lock );
 242     }
 243 }
 244
 245 void
 246 mediacontrol_pause( mediacontrol_Instance *self,
 247                     const mediacontrol_Position * a_position,
 248                     mediacontrol_Exception *exception )
 249 {
 250     input_thread_t *p_input = self->p_playlist->p_input;
 251
 252     /* FIXME: use the a_position parameter */
 253     mediacontrol_exception_init( exception );
 254     if( p_input != NULL )
 255     {
 256         var_SetInteger( p_input, "state", PAUSE_S );
 257     }
 258     else
 259     {
 260         RAISE( mediacontrol_InternalException, "No input" );
 261     }
 262 }
 263
 264 void
 265 mediacontrol_resume( mediacontrol_Instance *self,
 266                      const mediacontrol_Position * a_position,
 267                      mediacontrol_Exception *exception )
 268 {
 269     input_thread_t *p_input = self->p_playlist->p_input;
 270
 271     /* FIXME: use the a_position parameter */
 272     mediacontrol_exception_init( exception );
 273     if( p_input != NULL )
 274     {
 275         var_SetInteger( p_input, "state", PAUSE_S );
 276     }
 277     else
 278     {
 279         RAISE( mediacontrol_InternalException, "No input" );
 280     }
 281 }
 282
 283 void
 284 mediacontrol_stop( mediacontrol_Instance *self,
 285                    const mediacontrol_Position * a_position,
 286                    mediacontrol_Exception *exception )
 287 {
 288     /* FIXME: use the a_position parameter */
 289     mediacontrol_exception_init( exception );
 290     if( !self->p_playlist )
 291     {
 292         RAISE( mediacontrol_PlaylistException, "No playlist" );
 293     }
 294     else
 295         playlist_Stop( self->p_playlist );
 296 }
 297
 298 /**************************************************************************
 299  * Playlist management
 300  **************************************************************************/
 301
 302 void
 303 mediacontrol_playlist_add_item( mediacontrol_Instance *self,
 304                                 const char * psz_file,
 305                                 mediacontrol_Exception *exception )
 306 {
 307     libvlc_exception_t ex;
 308
 309     mediacontrol_exception_init( exception );
 310     libvlc_exception_init( &ex );
 311
 312     libvlc_playlist_add( self->p_instance, psz_file, psz_file, &ex );
 313     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 314 }
 315
 316 void
 317 mediacontrol_playlist_next_item( mediacontrol_Instance *self,
 318                                  mediacontrol_Exception *exception )
 319 {
 320     libvlc_exception_t ex;
 321
 322     mediacontrol_exception_init( exception );
 323     libvlc_exception_init( &ex );
 324
 325     libvlc_playlist_next( self->p_instance, &ex );
 326     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 327 }
 328
 329 void
 330 mediacontrol_playlist_clear( mediacontrol_Instance *self,
 331                              mediacontrol_Exception *exception )
 332 {
 333     libvlc_exception_t ex;
 334
 335     mediacontrol_exception_init( exception );
 336     libvlc_exception_init( &ex );
 337
 338     libvlc_playlist_clear( self->p_instance, &ex );
 339     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 340 }
 341
 342 mediacontrol_PlaylistSeq *
 343 mediacontrol_playlist_get_list( mediacontrol_Instance *self,
 344                                 mediacontrol_Exception *exception )
 345 {
 346     mediacontrol_PlaylistSeq *retval = NULL;
 347     int i_index;
 348     playlist_t * p_playlist = self->p_playlist;
 349     int i_playlist_size;
 350
 351     mediacontrol_exception_init( exception );
 352     if( !p_playlist )
 353     {
 354         RAISE( mediacontrol_PlaylistException, "No playlist" );
 355         return NULL;
 356     }
 357
 358     vlc_mutex_lock( &p_playlist->object_lock );
 359     i_playlist_size = p_playlist->current.i_size;
 360
 361     retval = private_mediacontrol_PlaylistSeq__alloc( i_playlist_size );
 362
 363     for( i_index = 0 ; i_index < i_playlist_size ; i_index++ )
 364     {
 365         retval->data[i_index] = input_item_GetURI( ARRAY_VAL(p_playlist->current, i_index)->p_input );
 366     }
 367     vlc_mutex_unlock( &p_playlist->object_lock );
 368
 369     return retval;
 370 }
 371
 372 /***************************************************************************
 373  * Status feedback
 374  ***************************************************************************/
 375
 376 mediacontrol_StreamInformation *
 377 mediacontrol_get_stream_information( mediacontrol_Instance *self,
 378                                      mediacontrol_PositionKey a_key,
 379                                      mediacontrol_Exception *exception )
 380 {
 381     mediacontrol_StreamInformation *retval = NULL;
 382     input_thread_t *p_input = self->p_playlist->p_input;
 383     vlc_value_t val;
 384
 385     retval = ( mediacontrol_StreamInformation* )
 386                             malloc( sizeof( mediacontrol_StreamInformation ) );
 387     if( ! retval )
 388     {
 389         RAISE( mediacontrol_InternalException, "Out of memory" );
 390         return NULL;
 391     }
 392
 393     if( ! p_input )
 394     {
 395         /* No p_input defined */
 396         retval->streamstatus = mediacontrol_UndefinedStatus;
 397         retval->url          = strdup( "None" );
 398         retval->position     = 0;
 399         retval->length       = 0;
 400     }
 401     else
 402     {
 403         switch( var_GetInteger( p_input, "state" ) )
 404         {
 405         case PLAYING_S     :
 406             retval->streamstatus = mediacontrol_PlayingStatus;
 407             break;
 408         case PAUSE_S       :
 409             retval->streamstatus = mediacontrol_PauseStatus;
 410             break;
 411         case INIT_S        :
 412             retval->streamstatus = mediacontrol_InitStatus;
 413             break;
 414         case END_S         :
 415             retval->streamstatus = mediacontrol_EndStatus;
 416             break;
 417         default :
 418             retval->streamstatus = mediacontrol_UndefinedStatus;
 419             break;
 420         }
 421
 422         retval->url = input_item_GetURI( input_GetItem( p_input ) );
 423
 424         /* TIME and LENGTH are in microseconds. We want them in ms */
 425         var_Get( p_input, "time", &val);
 426         retval->position = val.i_time / 1000;
 427
 428         var_Get( p_input, "length", &val);
 429         retval->length = val.i_time / 1000;
 430
 431         retval->position = private_mediacontrol_unit_convert( p_input,
 432                                          mediacontrol_MediaTime, a_key,
 433                                          retval->position );
 434         retval->length   = private_mediacontrol_unit_convert( p_input,
 435                                          mediacontrol_MediaTime, a_key,
 436                                          retval->length );
 437     }
 438     return retval;
 439 }