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 "mediacontrol_internal.h"
  29 #include <vlc/mediacontrol.h>
  30
  31 #include <vlc/libvlc.h>
  32 #include <vlc_common.h>
  33 #include <vlc_interface.h>
  34 #include <vlc_playlist.h>
  35
  36 #include <vlc_vout.h>
  37 #include <vlc_aout.h>
  38 #include <vlc_input.h>
  39 #include <vlc_osd.h>
  40
  41 #include <stdlib.h>                                      /* malloc(), free() */
  42 #include <string.h>
  43
  44 #include <stdio.h>
  45
  46 #ifdef HAVE_UNISTD_H
  47 #    include <unistd.h>
  48 #endif
  49 #include <sys/types.h>
  50
  51 mediacontrol_Instance* mediacontrol_new( int argc, char** argv, mediacontrol_Exception *exception )
  52 {
  53     mediacontrol_Instance* retval;
  54     libvlc_exception_t ex;
  55
  56     libvlc_exception_init( &ex );
  57     mediacontrol_exception_init( exception );
  58
  59     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
  60     if( !retval )
  61         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  62
  63     retval->p_instance = libvlc_new( argc, (const char**)argv, &ex );
  64     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
  65     retval->p_media_player = libvlc_media_player_new( retval->p_instance, &ex );
  66     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
  67     return retval;
  68 }
  69
  70 void
  71 mediacontrol_exit( mediacontrol_Instance *self )
  72 {
  73     libvlc_release( self->p_instance );
  74 }
  75
  76 libvlc_instance_t*
  77 mediacontrol_get_libvlc_instance( mediacontrol_Instance *self )
  78 {
  79     return self->p_instance;
  80 }
  81
  82 libvlc_media_player_t*
  83 mediacontrol_get_media_player( mediacontrol_Instance *self )
  84 {
  85     return self->p_media_player;
  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     libvlc_exception_t ex;
  94
  95     libvlc_exception_init( &ex );
  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_media_player = libvlc_media_player_new( retval->p_instance, &ex );
 104     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 105     return retval;
 106 }
 107
 108 /**************************************************************************
 109  * Playback management
 110  **************************************************************************/
 111 mediacontrol_Position*
 112 mediacontrol_get_media_position( mediacontrol_Instance *self,
 113                                  const mediacontrol_PositionOrigin an_origin,
 114                                  const mediacontrol_PositionKey a_key,
 115                                  mediacontrol_Exception *exception )
 116 {
 117     mediacontrol_Position* retval = NULL;
 118     libvlc_exception_t ex;
 119     int64_t pos;
 120
 121     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     if(  an_origin != mediacontrol_AbsolutePosition )
 129     {
 130         free( retval );
 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( self->p_media_player, &ex );
 138
 139     if( a_key == mediacontrol_MediaTime )
 140     {
 141         retval->value = pos;
 142     }
 143     else
 144     {
 145         retval->value = private_mediacontrol_unit_convert( self->p_media_player,
 146                                                            mediacontrol_MediaTime,
 147                                                            a_key,
 148                                                            pos );
 149     }
 150     return retval;
 151 }
 152
 153 /* Sets the media position */
 154 void
 155 mediacontrol_set_media_position( mediacontrol_Instance *self,
 156                                  const mediacontrol_Position * a_position,
 157                                  mediacontrol_Exception *exception )
 158 {
 159     libvlc_exception_t ex;
 160     int64_t i_pos;
 161
 162     libvlc_exception_init( &ex );
 163     mediacontrol_exception_init( exception );
 164
 165     i_pos = private_mediacontrol_position2microsecond( self->p_media_player, a_position );
 166     libvlc_media_player_set_time( self->p_media_player, i_pos / 1000, &ex );
 167     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 168 }
 169
 170 /* Starts playing a stream */
 171 /*
 172  * Known issues: since moving in the playlist using playlist_Next
 173  * or playlist_Prev implies starting to play items, the a_position
 174  * argument will be only honored for the 1st item in the list.
 175  *
 176  * XXX:FIXME split moving in the playlist and playing items two
 177  * different actions or make playlist_<Next|Prev> accept a time
 178  * value to start to play from.
 179  */
 180 void
 181 mediacontrol_start( mediacontrol_Instance *self,
 182                     const mediacontrol_Position * a_position,
 183                     mediacontrol_Exception *exception )
 184 {
 185     libvlc_media_t * p_media;
 186     char * psz_name;
 187     libvlc_exception_t ex;
 188
 189     mediacontrol_exception_init( exception );
 190     libvlc_exception_init( &ex );
 191
 192     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 193     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 194
 195     if ( ! p_media )
 196     {
 197         /* No media was defined. */
 198         RAISE( mediacontrol_PlaylistException, "No defined media." );
 199     }
 200     else
 201     {
 202         /* A media was defined. Get its mrl to reuse it, but reset the options
 203            (because start-time may have been set on the previous invocation */
 204         psz_name = libvlc_media_get_mrl( p_media );
 205         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 206
 207         /* Create a new media */
 208         p_media = libvlc_media_new( self->p_instance, psz_name, &ex );
 209         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 210
 211         if( a_position->value )
 212         {
 213             char * psz_from;
 214             libvlc_time_t i_from;
 215
 216             /* A start position was specified. Add it to media options */
 217             psz_from = ( char * )malloc( 20 * sizeof( char ) );
 218             i_from = private_mediacontrol_position2microsecond( self->p_media_player, a_position ) / 1000000;
 219             snprintf( psz_from, 20, "start-time=%"PRId64, i_from );
 220             libvlc_media_add_option( p_media, psz_from );
 221             HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 222         }
 223
 224         libvlc_media_player_set_media( self->p_media_player, p_media, &ex );
 225         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 226
 227         libvlc_media_player_play( self->p_media_player, &ex );
 228         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 229     }
 230 }
 231
 232 void
 233 mediacontrol_pause( mediacontrol_Instance *self,
 234                     mediacontrol_Exception *exception )
 235 {
 236     libvlc_exception_t ex;
 237
 238     mediacontrol_exception_init( exception );
 239     libvlc_exception_init( &ex );
 240     libvlc_media_player_pause( self->p_media_player, &ex );
 241     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 242 }
 243
 244 void
 245 mediacontrol_resume( mediacontrol_Instance *self,
 246                      mediacontrol_Exception *exception )
 247 {
 248     libvlc_exception_t ex;
 249
 250     mediacontrol_exception_init( exception );
 251     libvlc_exception_init( &ex );
 252     libvlc_media_player_pause( self->p_media_player, &ex );
 253     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 254 }
 255
 256 void
 257 mediacontrol_stop( mediacontrol_Instance *self,
 258                    mediacontrol_Exception *exception )
 259 {
 260     libvlc_exception_t ex;
 261
 262     mediacontrol_exception_init( exception );
 263     libvlc_exception_init( &ex );
 264     libvlc_media_player_stop( self->p_media_player, &ex );
 265     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 266 }
 267
 268 /**************************************************************************
 269  * File management
 270  **************************************************************************/
 271
 272 void
 273 mediacontrol_set_mrl( mediacontrol_Instance *self,
 274                       const char * psz_file,
 275                       mediacontrol_Exception *exception )
 276 {
 277     libvlc_media_t * p_media;
 278     libvlc_exception_t ex;
 279
 280     mediacontrol_exception_init( exception );
 281     libvlc_exception_init( &ex );
 282
 283     p_media = libvlc_media_new( self->p_instance, psz_file, &ex );
 284     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 285
 286     libvlc_media_player_set_media( self->p_media_player, p_media, &ex );
 287     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 288 }
 289
 290 char *
 291 mediacontrol_get_mrl( mediacontrol_Instance *self,
 292                       mediacontrol_Exception *exception )
 293 {
 294     libvlc_media_t * p_media;
 295     libvlc_exception_t ex;
 296
 297     mediacontrol_exception_init( exception );
 298     libvlc_exception_init( &ex );
 299
 300     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 301     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 302
 303     if ( ! p_media )
 304     {
 305         return strdup( "" );
 306     }
 307     else
 308     {
 309         char * psz_mrl;
 310
 311         psz_mrl = libvlc_media_get_mrl( p_media );
 312         HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 313         return psz_mrl;
 314     }
 315 }
 316
 317 /***************************************************************************
 318  * Status feedback
 319  ***************************************************************************/
 320
 321 mediacontrol_StreamInformation *
 322 mediacontrol_get_stream_information( mediacontrol_Instance *self,
 323                                      mediacontrol_PositionKey a_key,
 324                                      mediacontrol_Exception *exception )
 325 {
 326     (void)a_key;
 327     mediacontrol_StreamInformation *retval = NULL;
 328     libvlc_media_t * p_media;
 329     libvlc_exception_t ex;
 330
 331     libvlc_exception_init( &ex );
 332
 333     retval = ( mediacontrol_StreamInformation* )
 334                             malloc( sizeof( mediacontrol_StreamInformation ) );
 335     if( ! retval )
 336     {
 337         RAISE( mediacontrol_InternalException, "Out of memory" );
 338         return NULL;
 339     }
 340
 341     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 342     if( libvlc_exception_raised( &ex ) )
 343     {
 344         free( retval );
 345         RAISE( mediacontrol_InternalException, libvlc_errmsg( ) );
 346         libvlc_exception_clear( &ex );
 347         return NULL;
 348     }
 349
 350     if( ! p_media )
 351     {
 352         /* No p_media defined */
 353         retval->streamstatus = mediacontrol_UndefinedStatus;
 354         retval->url          = strdup( "" );
 355         retval->position     = 0;
 356         retval->length       = 0;
 357     }
 358     else
 359     {
 360         libvlc_state_t state;
 361
 362         state = libvlc_media_player_get_state( self->p_media_player, &ex );
 363         if( libvlc_exception_raised( &ex ) )
 364         {
 365             free( retval );
 366             RAISE( mediacontrol_InternalException, libvlc_errmsg() );
 367             libvlc_exception_clear( &ex );
 368             return NULL;
 369         }
 370
 371         switch( state )
 372         {
 373         case libvlc_NothingSpecial:
 374             retval->streamstatus = mediacontrol_UndefinedStatus;
 375             break;
 376         case libvlc_Opening :
 377             retval->streamstatus = mediacontrol_InitStatus;
 378             break;
 379         case libvlc_Buffering:
 380             retval->streamstatus = mediacontrol_BufferingStatus;
 381             break;
 382         case libvlc_Playing:
 383             retval->streamstatus = mediacontrol_PlayingStatus;
 384             break;
 385         case libvlc_Paused:
 386             retval->streamstatus = mediacontrol_PauseStatus;
 387             break;
 388         case libvlc_Stopped:
 389             retval->streamstatus = mediacontrol_StopStatus;
 390             break;
 391         case libvlc_Ended:
 392             retval->streamstatus = mediacontrol_EndStatus;
 393             break;
 394         case libvlc_Error:
 395             retval->streamstatus = mediacontrol_ErrorStatus;
 396             break;
 397         default :
 398             retval->streamstatus = mediacontrol_UndefinedStatus;
 399             break;
 400         }
 401
 402         retval->url = libvlc_media_get_mrl( p_media );
 403
 404         retval->position = libvlc_media_player_get_time( self->p_media_player, &ex );
 405         if( libvlc_exception_raised( &ex ) )
 406         {
 407             libvlc_exception_clear( &ex );
 408             retval->position = 0;
 409         }
 410
 411         retval->length = libvlc_media_player_get_length( self->p_media_player, &ex );
 412         if( libvlc_exception_raised( &ex ) )
 413         {
 414             libvlc_exception_clear( &ex );
 415             retval->length = 0;
 416         }
 417
 418     }
 419     return retval;
 420 }