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