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