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