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 #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
  58     libvlc_exception_init( &ex );
  59     mediacontrol_exception_init( exception );
  60
  61     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
  62     if( !retval )
  63         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  64
  65     retval->p_instance = libvlc_new( argc, (const char**)argv, &ex );
  66     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
  67     retval->p_media_player = libvlc_media_player_new( retval->p_instance, &ex );
  68     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
  69     return retval;
  70 }
  71
  72 void
  73 mediacontrol_exit( mediacontrol_Instance *self )
  74 {
  75     libvlc_release( self->p_instance );
  76 }
  77
  78 libvlc_instance_t*
  79 mediacontrol_get_libvlc_instance( mediacontrol_Instance *self )
  80 {
  81     return self->p_instance;
  82 }
  83
  84 libvlc_media_player_t*
  85 mediacontrol_get_media_player( mediacontrol_Instance *self )
  86 {
  87     return self->p_media_player;
  88 }
  89
  90 mediacontrol_Instance *
  91 mediacontrol_new_from_instance( libvlc_instance_t* p_instance,
  92                 mediacontrol_Exception *exception )
  93 {
  94     mediacontrol_Instance* retval;
  95     libvlc_exception_t ex;
  96
  97     libvlc_exception_init( &ex );
  98
  99     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
 100     if( ! retval )
 101     {
 102         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 103     }
 104     retval->p_instance = p_instance;
 105     retval->p_media_player = libvlc_media_player_new( retval->p_instance, &ex );
 106     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 107     return retval;
 108 }
 109
 110 /**************************************************************************
 111  * Playback management
 112  **************************************************************************/
 113 mediacontrol_Position*
 114 mediacontrol_get_media_position( mediacontrol_Instance *self,
 115                                  const mediacontrol_PositionOrigin an_origin,
 116                                  const mediacontrol_PositionKey a_key,
 117                                  mediacontrol_Exception *exception )
 118 {
 119     mediacontrol_Position* retval = NULL;
 120     libvlc_exception_t ex;
 121     int64_t pos;
 122
 123     mediacontrol_exception_init( exception );
 124     libvlc_exception_init( &ex );
 125
 126     retval = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
 127     retval->origin = an_origin;
 128     retval->key = a_key;
 129
 130     if(  an_origin != mediacontrol_AbsolutePosition )
 131     {
 132         free( retval );
 133         /* Relative or ModuloPosition make no sense */
 134         RAISE_NULL( mediacontrol_PositionOriginNotSupported,
 135                     "Only absolute position is valid." );
 136     }
 137
 138     /* We are asked for an AbsolutePosition. */
 139     pos = libvlc_media_player_get_time( self->p_media_player, &ex );
 140
 141     if( a_key == mediacontrol_MediaTime )
 142     {
 143         retval->value = pos;
 144     }
 145     else
 146     {
 147         retval->value = private_mediacontrol_unit_convert( self->p_media_player,
 148                                                            mediacontrol_MediaTime,
 149                                                            a_key,
 150                                                            pos );
 151     }
 152     return retval;
 153 }
 154
 155 /* Sets the media position */
 156 void
 157 mediacontrol_set_media_position( mediacontrol_Instance *self,
 158                                  const mediacontrol_Position * a_position,
 159                                  mediacontrol_Exception *exception )
 160 {
 161     libvlc_exception_t ex;
 162     int64_t i_pos;
 163
 164     libvlc_exception_init( &ex );
 165     mediacontrol_exception_init( exception );
 166
 167     i_pos = private_mediacontrol_position2microsecond( self->p_media_player, a_position );
 168     libvlc_media_player_set_time( self->p_media_player, i_pos / 1000, &ex );
 169     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 170 }
 171
 172 /* Starts playing a stream */
 173 /*
 174  * Known issues: since moving in the playlist using playlist_Next
 175  * or playlist_Prev implies starting to play items, the a_position
 176  * argument will be only honored for the 1st item in the list.
 177  *
 178  * XXX:FIXME split moving in the playlist and playing items two
 179  * different actions or make playlist_<Next|Prev> accept a time
 180  * value to start to play from.
 181  */
 182 void
 183 mediacontrol_start( mediacontrol_Instance *self,
 184                     const mediacontrol_Position * a_position,
 185                     mediacontrol_Exception *exception )
 186 {
 187     libvlc_media_t * p_media;
 188     char * psz_name;
 189     libvlc_exception_t ex;
 190
 191     mediacontrol_exception_init( exception );
 192     libvlc_exception_init( &ex );
 193
 194     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 195     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 196
 197     if ( ! p_media )
 198     {
 199         /* No media was defined. */
 200         RAISE( mediacontrol_PlaylistException, "No defined media." );
 201     }
 202     else
 203     {
 204         /* A media was defined. Get its mrl to reuse it, but reset the options
 205            (because start-time may have been set on the previous invocation */
 206         psz_name = libvlc_media_get_mrl( p_media );
 207         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 208
 209         /* Create a new media */
 210         p_media = libvlc_media_new( self->p_instance, psz_name, &ex );
 211         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 212
 213         if( a_position->value )
 214         {
 215             char * psz_from;
 216             libvlc_time_t i_from;
 217
 218             /* A start position was specified. Add it to media options */
 219             psz_from = ( char * )malloc( 20 * sizeof( char ) );
 220             i_from = private_mediacontrol_position2microsecond( self->p_media_player, a_position ) / 1000000;
 221             snprintf( psz_from, 20, "start-time=%"PRId64, i_from );
 222             libvlc_media_add_option( p_media, psz_from );
 223             HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 224         }
 225
 226         libvlc_media_player_set_media( self->p_media_player, p_media, &ex );
 227         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 228
 229         libvlc_media_player_play( self->p_media_player, &ex );
 230         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 231     }
 232 }
 233
 234 void
 235 mediacontrol_pause( mediacontrol_Instance *self,
 236                     mediacontrol_Exception *exception )
 237 {
 238     libvlc_exception_t ex;
 239
 240     mediacontrol_exception_init( exception );
 241     libvlc_exception_init( &ex );
 242     libvlc_media_player_pause( self->p_media_player, &ex );
 243     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 244 }
 245
 246 void
 247 mediacontrol_resume( mediacontrol_Instance *self,
 248                      mediacontrol_Exception *exception )
 249 {
 250     libvlc_exception_t ex;
 251
 252     mediacontrol_exception_init( exception );
 253     libvlc_exception_init( &ex );
 254     libvlc_media_player_pause( self->p_media_player, &ex );
 255     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 256 }
 257
 258 void
 259 mediacontrol_stop( mediacontrol_Instance *self,
 260                    mediacontrol_Exception *exception )
 261 {
 262     libvlc_exception_t ex;
 263
 264     mediacontrol_exception_init( exception );
 265     libvlc_exception_init( &ex );
 266     libvlc_media_player_stop( self->p_media_player, &ex );
 267     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 268 }
 269
 270 /**************************************************************************
 271  * File management
 272  **************************************************************************/
 273
 274 void
 275 mediacontrol_set_mrl( mediacontrol_Instance *self,
 276                       const char * psz_file,
 277                       mediacontrol_Exception *exception )
 278 {
 279     libvlc_media_t * p_media;
 280     libvlc_exception_t ex;
 281
 282     mediacontrol_exception_init( exception );
 283     libvlc_exception_init( &ex );
 284
 285     p_media = libvlc_media_new( self->p_instance, psz_file, &ex );
 286     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 287
 288     libvlc_media_player_set_media( self->p_media_player, p_media, &ex );
 289     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 290 }
 291
 292 char *
 293 mediacontrol_get_mrl( mediacontrol_Instance *self,
 294                       mediacontrol_Exception *exception )
 295 {
 296     libvlc_media_t * p_media;
 297     libvlc_exception_t ex;
 298
 299     mediacontrol_exception_init( exception );
 300     libvlc_exception_init( &ex );
 301
 302     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 303     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 304
 305     if ( ! p_media )
 306     {
 307         return strdup( "" );
 308     }
 309     else
 310     {
 311         char * psz_mrl;
 312
 313         psz_mrl = libvlc_media_get_mrl( p_media );
 314         HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 315         return psz_mrl;
 316     }
 317 }
 318
 319 /***************************************************************************
 320  * Status feedback
 321  ***************************************************************************/
 322
 323 mediacontrol_StreamInformation *
 324 mediacontrol_get_stream_information( mediacontrol_Instance *self,
 325                                      mediacontrol_PositionKey a_key,
 326                                      mediacontrol_Exception *exception )
 327 {
 328     (void)a_key;
 329     mediacontrol_StreamInformation *retval = NULL;
 330     libvlc_media_t * p_media;
 331     libvlc_exception_t ex;
 332
 333     libvlc_exception_init( &ex );
 334
 335     retval = ( mediacontrol_StreamInformation* )
 336                             malloc( sizeof( mediacontrol_StreamInformation ) );
 337     if( ! retval )
 338     {
 339         RAISE( mediacontrol_InternalException, "Out of memory" );
 340         return NULL;
 341     }
 342
 343     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 344     if( libvlc_exception_raised( &ex ) )
 345     {
 346         free( retval );
 347         RAISE( mediacontrol_InternalException, libvlc_errmsg( ) );
 348         libvlc_exception_clear( &ex );
 349         return NULL;
 350     }
 351
 352     if( ! p_media )
 353     {
 354         /* No p_media defined */
 355         retval->streamstatus = mediacontrol_UndefinedStatus;
 356         retval->url          = strdup( "" );
 357         retval->position     = 0;
 358         retval->length       = 0;
 359     }
 360     else
 361     {
 362         libvlc_state_t state;
 363
 364         state = libvlc_media_player_get_state( self->p_media_player, &ex );
 365         if( libvlc_exception_raised( &ex ) )
 366         {
 367             free( retval );
 368             RAISE( mediacontrol_InternalException, libvlc_errmsg() );
 369             libvlc_exception_clear( &ex );
 370             return NULL;
 371         }
 372
 373         switch( state )
 374         {
 375         case libvlc_NothingSpecial:
 376             retval->streamstatus = mediacontrol_UndefinedStatus;
 377             break;
 378         case libvlc_Opening :
 379             retval->streamstatus = mediacontrol_InitStatus;
 380             break;
 381         case libvlc_Buffering:
 382             retval->streamstatus = mediacontrol_BufferingStatus;
 383             break;
 384         case libvlc_Playing:
 385             retval->streamstatus = mediacontrol_PlayingStatus;
 386             break;
 387         case libvlc_Paused:
 388             retval->streamstatus = mediacontrol_PauseStatus;
 389             break;
 390         case libvlc_Stopped:
 391             retval->streamstatus = mediacontrol_StopStatus;
 392             break;
 393         case libvlc_Ended:
 394             retval->streamstatus = mediacontrol_EndStatus;
 395             break;
 396         case libvlc_Error:
 397             retval->streamstatus = mediacontrol_ErrorStatus;
 398             break;
 399         default :
 400             retval->streamstatus = mediacontrol_UndefinedStatus;
 401             break;
 402         }
 403
 404         retval->url = libvlc_media_get_mrl( p_media );
 405
 406         retval->position = libvlc_media_player_get_time( self->p_media_player, &ex );
 407         if( libvlc_exception_raised( &ex ) )
 408         {
 409             libvlc_exception_clear( &ex );
 410             retval->position = 0;
 411         }
 412
 413         retval->length = libvlc_media_player_get_length( self->p_media_player, &ex );
 414         if( libvlc_exception_raised( &ex ) )
 415         {
 416             libvlc_exception_clear( &ex );
 417             retval->length = 0;
 418         }
 419
 420     }
 421     return retval;
 422 }