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