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