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