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_TIME_H
  50 #    include <sys/time.h>
  51 #endif
  52 #ifdef HAVE_SYS_TYPES_H
  53 #    include <sys/types.h>
  54 #endif
  55
  56 mediacontrol_Instance* mediacontrol_new( int argc, char** argv, mediacontrol_Exception *exception )
  57 {
  58     mediacontrol_Instance* retval;
  59     libvlc_exception_t ex;
  60
  61     libvlc_exception_init( &ex );
  62     mediacontrol_exception_init( exception );
  63
  64     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
  65     if( !retval )
  66         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  67
  68     retval->p_instance = libvlc_new( argc, (const char**)argv, &ex );
  69     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
  70     retval->p_media_player = libvlc_media_player_new( retval->p_instance, &ex );
  71     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
  72     return retval;
  73 }
  74
  75 void
  76 mediacontrol_exit( mediacontrol_Instance *self )
  77 {
  78     libvlc_release( self->p_instance );
  79 }
  80
  81 libvlc_instance_t*
  82 mediacontrol_get_libvlc_instance( mediacontrol_Instance *self )
  83 {
  84     return self->p_instance;
  85 }
  86
  87 libvlc_media_player_t*
  88 mediacontrol_get_media_player( mediacontrol_Instance *self )
  89 {
  90     return self->p_media_player;
  91 }
  92
  93 mediacontrol_Instance *
  94 mediacontrol_new_from_instance( libvlc_instance_t* p_instance,
  95                 mediacontrol_Exception *exception )
  96 {
  97     mediacontrol_Instance* retval;
  98     libvlc_exception_t ex;
  99
 100     libvlc_exception_init( &ex );
 101
 102     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
 103     if( ! retval )
 104     {
 105         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 106     }
 107     retval->p_instance = p_instance;
 108     retval->p_media_player = libvlc_media_player_new( retval->p_instance, &ex );
 109     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 110     return retval;
 111 }
 112
 113 /**************************************************************************
 114  * Playback management
 115  **************************************************************************/
 116 mediacontrol_Position*
 117 mediacontrol_get_media_position( mediacontrol_Instance *self,
 118                                  const mediacontrol_PositionOrigin an_origin,
 119                                  const mediacontrol_PositionKey a_key,
 120                                  mediacontrol_Exception *exception )
 121 {
 122     mediacontrol_Position* retval = NULL;
 123     libvlc_exception_t ex;
 124     int64_t pos;
 125
 126     mediacontrol_exception_init( exception );
 127     libvlc_exception_init( &ex );
 128
 129     retval = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
 130     retval->origin = an_origin;
 131     retval->key = a_key;
 132
 133     if(  an_origin != mediacontrol_AbsolutePosition )
 134     {
 135         free( retval );
 136         /* Relative or ModuloPosition make no sense */
 137         RAISE_NULL( mediacontrol_PositionOriginNotSupported,
 138                     "Only absolute position is valid." );
 139     }
 140
 141     /* We are asked for an AbsolutePosition. */
 142     pos = libvlc_media_player_get_time( self->p_media_player, &ex );
 143
 144     if( a_key == mediacontrol_MediaTime )
 145     {
 146         retval->value = pos;
 147     }
 148     else
 149     {
 150         retval->value = private_mediacontrol_unit_convert( self->p_media_player,
 151                                                            mediacontrol_MediaTime,
 152                                                            a_key,
 153                                                            pos );
 154     }
 155     return retval;
 156 }
 157
 158 /* Sets the media position */
 159 void
 160 mediacontrol_set_media_position( mediacontrol_Instance *self,
 161                                  const mediacontrol_Position * a_position,
 162                                  mediacontrol_Exception *exception )
 163 {
 164     libvlc_exception_t ex;
 165     int64_t i_pos;
 166
 167     libvlc_exception_init( &ex );
 168     mediacontrol_exception_init( exception );
 169
 170     i_pos = private_mediacontrol_position2microsecond( self->p_media_player, a_position );
 171     libvlc_media_player_set_time( self->p_media_player, i_pos / 1000, &ex );
 172     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 173 }
 174
 175 /* Starts playing a stream */
 176 /*
 177  * Known issues: since moving in the playlist using playlist_Next
 178  * or playlist_Prev implies starting to play items, the a_position
 179  * argument will be only honored for the 1st item in the list.
 180  *
 181  * XXX:FIXME split moving in the playlist and playing items two
 182  * different actions or make playlist_<Next|Prev> accept a time
 183  * value to start to play from.
 184  */
 185 void
 186 mediacontrol_start( mediacontrol_Instance *self,
 187                     const mediacontrol_Position * a_position,
 188                     mediacontrol_Exception *exception )
 189 {
 190     libvlc_media_t * p_media;
 191     char * psz_name;
 192     libvlc_exception_t ex;
 193
 194     mediacontrol_exception_init( exception );
 195     libvlc_exception_init( &ex );
 196
 197     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 198     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 199
 200     if ( ! p_media )
 201     {
 202         /* No media was defined. */
 203         RAISE( mediacontrol_PlaylistException, "No defined media." );
 204     }
 205     else
 206     {
 207         /* A media was defined. Get its mrl to reuse it, but reset the options
 208            (because start-time may have been set on the previous invocation */
 209         psz_name = libvlc_media_get_mrl( p_media );
 210         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 211
 212         /* Create a new media */
 213         p_media = libvlc_media_new( self->p_instance, psz_name, &ex );
 214         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 215
 216         if( a_position->value )
 217         {
 218             char * psz_from;
 219             libvlc_time_t i_from;
 220
 221             /* A start position was specified. Add it to media options */
 222             psz_from = ( char * )malloc( 20 * sizeof( char ) );
 223             i_from = private_mediacontrol_position2microsecond( self->p_media_player, a_position ) / 1000000;
 224             snprintf( psz_from, 20, "start-time=%"PRId64, i_from );
 225             libvlc_media_add_option( p_media, psz_from );
 226             HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 227         }
 228
 229         libvlc_media_player_set_media( self->p_media_player, p_media, &ex );
 230         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 231
 232         libvlc_media_player_play( self->p_media_player, &ex );
 233         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 234     }
 235 }
 236
 237 void
 238 mediacontrol_pause( mediacontrol_Instance *self,
 239                     mediacontrol_Exception *exception )
 240 {
 241     libvlc_exception_t ex;
 242
 243     mediacontrol_exception_init( exception );
 244     libvlc_exception_init( &ex );
 245     libvlc_media_player_pause( self->p_media_player, &ex );
 246     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 247 }
 248
 249 void
 250 mediacontrol_resume( mediacontrol_Instance *self,
 251                      mediacontrol_Exception *exception )
 252 {
 253     libvlc_exception_t ex;
 254
 255     mediacontrol_exception_init( exception );
 256     libvlc_exception_init( &ex );
 257     libvlc_media_player_pause( self->p_media_player, &ex );
 258     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 259 }
 260
 261 void
 262 mediacontrol_stop( mediacontrol_Instance *self,
 263                    mediacontrol_Exception *exception )
 264 {
 265     libvlc_exception_t ex;
 266
 267     mediacontrol_exception_init( exception );
 268     libvlc_exception_init( &ex );
 269     libvlc_media_player_stop( self->p_media_player, &ex );
 270     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 271 }
 272
 273 /**************************************************************************
 274  * File management
 275  **************************************************************************/
 276
 277 void
 278 mediacontrol_set_mrl( mediacontrol_Instance *self,
 279                       const char * psz_file,
 280                       mediacontrol_Exception *exception )
 281 {
 282     libvlc_media_t * p_media;
 283     libvlc_exception_t ex;
 284
 285     mediacontrol_exception_init( exception );
 286     libvlc_exception_init( &ex );
 287
 288     p_media = libvlc_media_new( self->p_instance, psz_file, &ex );
 289     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 290
 291     libvlc_media_player_set_media( self->p_media_player, p_media, &ex );
 292     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 293 }
 294
 295 char *
 296 mediacontrol_get_mrl( mediacontrol_Instance *self,
 297                       mediacontrol_Exception *exception )
 298 {
 299     libvlc_media_t * p_media;
 300     libvlc_exception_t ex;
 301
 302     mediacontrol_exception_init( exception );
 303     libvlc_exception_init( &ex );
 304
 305     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 306     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 307
 308     if ( ! p_media )
 309     {
 310         return strdup( "" );
 311     }
 312     else
 313     {
 314         char * psz_mrl;
 315
 316         psz_mrl = libvlc_media_get_mrl( p_media );
 317         HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 318         return psz_mrl;
 319     }
 320 }
 321
 322 /***************************************************************************
 323  * Status feedback
 324  ***************************************************************************/
 325
 326 mediacontrol_StreamInformation *
 327 mediacontrol_get_stream_information( mediacontrol_Instance *self,
 328                                      mediacontrol_PositionKey a_key,
 329                                      mediacontrol_Exception *exception )
 330 {
 331     (void)a_key;
 332     mediacontrol_StreamInformation *retval = NULL;
 333     libvlc_media_t * p_media;
 334     libvlc_exception_t ex;
 335
 336     libvlc_exception_init( &ex );
 337
 338     retval = ( mediacontrol_StreamInformation* )
 339                             malloc( sizeof( mediacontrol_StreamInformation ) );
 340     if( ! retval )
 341     {
 342         RAISE( mediacontrol_InternalException, "Out of memory" );
 343         return NULL;
 344     }
 345
 346     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
 347     if( libvlc_exception_raised( &ex ) )
 348     {
 349         free( retval );
 350         RAISE( mediacontrol_InternalException, libvlc_errmsg( ) );
 351         libvlc_exception_clear( &ex );
 352         return NULL;
 353     }
 354
 355     if( ! p_media )
 356     {
 357         /* No p_media defined */
 358         retval->streamstatus = mediacontrol_UndefinedStatus;
 359         retval->url          = strdup( "" );
 360         retval->position     = 0;
 361         retval->length       = 0;
 362     }
 363     else
 364     {
 365         libvlc_state_t state;
 366
 367         state = libvlc_media_player_get_state( self->p_media_player, &ex );
 368         if( libvlc_exception_raised( &ex ) )
 369         {
 370             free( retval );
 371             RAISE( mediacontrol_InternalException, libvlc_errmsg() );
 372             libvlc_exception_clear( &ex );
 373             return NULL;
 374         }
 375
 376         switch( state )
 377         {
 378         case libvlc_NothingSpecial:
 379             retval->streamstatus = mediacontrol_UndefinedStatus;
 380             break;
 381         case libvlc_Opening :
 382             retval->streamstatus = mediacontrol_InitStatus;
 383             break;
 384         case libvlc_Buffering:
 385             retval->streamstatus = mediacontrol_BufferingStatus;
 386             break;
 387         case libvlc_Playing:
 388             retval->streamstatus = mediacontrol_PlayingStatus;
 389             break;
 390         case libvlc_Paused:
 391             retval->streamstatus = mediacontrol_PauseStatus;
 392             break;
 393         case libvlc_Stopped:
 394             retval->streamstatus = mediacontrol_StopStatus;
 395             break;
 396         case libvlc_Ended:
 397             retval->streamstatus = mediacontrol_EndStatus;
 398             break;
 399         case libvlc_Error:
 400             retval->streamstatus = mediacontrol_ErrorStatus;
 401             break;
 402         default :
 403             retval->streamstatus = mediacontrol_UndefinedStatus;
 404             break;
 405         }
 406
 407         retval->url = libvlc_media_get_mrl( p_media );
 408
 409         retval->position = libvlc_media_player_get_time( self->p_media_player, &ex );
 410         if( libvlc_exception_raised( &ex ) )
 411         {
 412             libvlc_exception_clear( &ex );
 413             retval->position = 0;
 414         }
 415
 416         retval->length = libvlc_media_player_get_length( self->p_media_player, &ex );
 417         if( libvlc_exception_raised( &ex ) )
 418         {
 419             libvlc_exception_clear( &ex );
 420             retval->length = 0;
 421         }
 422
 423     }
 424     return retval;
 425 }