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     int64_t pos;
 118
 119     mediacontrol_exception_init( exception );
 120
 121     retval = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
 122     retval->origin = an_origin;
 123     retval->key = a_key;
 124
 125     if(  an_origin != mediacontrol_AbsolutePosition )
 126     {
 127         free( retval );
 128         /* Relative or ModuloPosition make no sense */
 129         RAISE_NULL( mediacontrol_PositionOriginNotSupported,
 130                     "Only absolute position is valid." );
 131     }
 132
 133     /* We are asked for an AbsolutePosition. */
 134     pos = libvlc_media_player_get_time( self->p_media_player );
 135
 136     if( a_key == mediacontrol_MediaTime )
 137     {
 138         retval->value = pos;
 139     }
 140     else
 141     {
 142         retval->value = private_mediacontrol_unit_convert( self->p_media_player,
 143                                                            mediacontrol_MediaTime,
 144                                                            a_key,
 145                                                            pos );
 146     }
 147     return retval;
 148 }
 149
 150 /* Sets the media position */
 151 void
 152 mediacontrol_set_media_position( mediacontrol_Instance *self,
 153                                  const mediacontrol_Position * a_position,
 154                                  mediacontrol_Exception *exception )
 155 {
 156     int64_t i_pos;
 157
 158     mediacontrol_exception_init( exception );
 159
 160     i_pos = private_mediacontrol_position2microsecond( self->p_media_player, a_position );
 161     libvlc_media_player_set_time( self->p_media_player, i_pos / 1000 );
 162 }
 163
 164 /* Starts playing a stream */
 165 /*
 166  * Known issues: since moving in the playlist using playlist_Next
 167  * or playlist_Prev implies starting to play items, the a_position
 168  * argument will be only honored for the 1st item in the list.
 169  *
 170  * XXX:FIXME split moving in the playlist and playing items two
 171  * different actions or make playlist_<Next|Prev> accept a time
 172  * value to start to play from.
 173  */
 174 void
 175 mediacontrol_start( mediacontrol_Instance *self,
 176                     const mediacontrol_Position * a_position,
 177                     mediacontrol_Exception *exception )
 178 {
 179     libvlc_media_t * p_media;
 180     char * psz_name;
 181     libvlc_exception_t ex;
 182
 183     mediacontrol_exception_init( exception );
 184     libvlc_exception_init( &ex );
 185
 186     p_media = libvlc_media_player_get_media( self->p_media_player );
 187
 188     if ( ! p_media )
 189     {
 190         /* No media was defined. */
 191         RAISE( mediacontrol_PlaylistException, "No defined media." );
 192     }
 193     else
 194     {
 195         /* A media was defined. Get its mrl to reuse it, but reset the options
 196            (because start-time may have been set on the previous invocation */
 197         psz_name = libvlc_media_get_mrl( p_media );
 198         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 199
 200         /* Create a new media */
 201         p_media = libvlc_media_new( self->p_instance, psz_name, &ex );
 202         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 203
 204         if( a_position->value )
 205         {
 206             char * psz_from;
 207             libvlc_time_t i_from;
 208
 209             /* A start position was specified. Add it to media options */
 210             psz_from = ( char * )malloc( 20 * sizeof( char ) );
 211             i_from = private_mediacontrol_position2microsecond( self->p_media_player, a_position ) / 1000000;
 212             snprintf( psz_from, 20, "start-time=%"PRId64, i_from );
 213             libvlc_media_add_option( p_media, psz_from );
 214             HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 215         }
 216
 217         libvlc_media_player_set_media( self->p_media_player, p_media );
 218
 219         libvlc_media_player_play( self->p_media_player );
 220     }
 221 }
 222
 223 void
 224 mediacontrol_pause( mediacontrol_Instance *self,
 225                     mediacontrol_Exception *exception )
 226 {
 227     mediacontrol_exception_init( exception );
 228     libvlc_media_player_pause( self->p_media_player );
 229 }
 230
 231 void
 232 mediacontrol_resume( mediacontrol_Instance *self,
 233                      mediacontrol_Exception *exception )
 234 {
 235     mediacontrol_exception_init( exception );
 236     libvlc_media_player_pause( self->p_media_player );
 237 }
 238
 239 void
 240 mediacontrol_stop( mediacontrol_Instance *self,
 241                    mediacontrol_Exception *exception )
 242 {
 243     mediacontrol_exception_init( exception );
 244     libvlc_media_player_stop( self->p_media_player );
 245 }
 246
 247 /**************************************************************************
 248  * File management
 249  **************************************************************************/
 250
 251 void
 252 mediacontrol_set_mrl( mediacontrol_Instance *self,
 253                       const char * psz_file,
 254                       mediacontrol_Exception *exception )
 255 {
 256     libvlc_media_t * p_media;
 257     libvlc_exception_t ex;
 258
 259     mediacontrol_exception_init( exception );
 260     libvlc_exception_init( &ex );
 261
 262     p_media = libvlc_media_new( self->p_instance, psz_file, &ex );
 263     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 264
 265     libvlc_media_player_set_media( self->p_media_player, p_media );
 266 }
 267
 268 char *
 269 mediacontrol_get_mrl( mediacontrol_Instance *self,
 270                       mediacontrol_Exception *exception )
 271 {
 272     libvlc_media_t * p_media;
 273     libvlc_exception_t ex;
 274
 275     mediacontrol_exception_init( exception );
 276     libvlc_exception_init( &ex );
 277
 278     p_media = libvlc_media_player_get_media( self->p_media_player );
 279
 280     if ( ! p_media )
 281     {
 282         return strdup( "" );
 283     }
 284     else
 285     {
 286         char * psz_mrl;
 287
 288         psz_mrl = libvlc_media_get_mrl( p_media );
 289         HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
 290         return psz_mrl;
 291     }
 292 }
 293
 294 /***************************************************************************
 295  * Status feedback
 296  ***************************************************************************/
 297
 298 mediacontrol_StreamInformation *
 299 mediacontrol_get_stream_information( mediacontrol_Instance *self,
 300                                      mediacontrol_PositionKey a_key,
 301                                      mediacontrol_Exception *exception )
 302 {
 303     (void)a_key;
 304     mediacontrol_StreamInformation *retval = NULL;
 305     libvlc_media_t * p_media;
 306     libvlc_exception_t ex;
 307
 308     libvlc_exception_init( &ex );
 309
 310     retval = ( mediacontrol_StreamInformation* )
 311                             malloc( sizeof( mediacontrol_StreamInformation ) );
 312     if( ! retval )
 313     {
 314         RAISE( mediacontrol_InternalException, "Out of memory" );
 315         return NULL;
 316     }
 317
 318     p_media = libvlc_media_player_get_media( self->p_media_player );
 319     if( ! p_media )
 320     {
 321         /* No p_media defined */
 322         retval->streamstatus = mediacontrol_UndefinedStatus;
 323         retval->url          = strdup( "" );
 324         retval->position     = 0;
 325         retval->length       = 0;
 326     }
 327     else
 328     {
 329         libvlc_state_t state;
 330
 331         state = libvlc_media_player_get_state( self->p_media_player );
 332         switch( state )
 333         {
 334         case libvlc_NothingSpecial:
 335             retval->streamstatus = mediacontrol_UndefinedStatus;
 336             break;
 337         case libvlc_Opening :
 338             retval->streamstatus = mediacontrol_InitStatus;
 339             break;
 340         case libvlc_Buffering:
 341             retval->streamstatus = mediacontrol_BufferingStatus;
 342             break;
 343         case libvlc_Playing:
 344             retval->streamstatus = mediacontrol_PlayingStatus;
 345             break;
 346         case libvlc_Paused:
 347             retval->streamstatus = mediacontrol_PauseStatus;
 348             break;
 349         case libvlc_Stopped:
 350             retval->streamstatus = mediacontrol_StopStatus;
 351             break;
 352         case libvlc_Ended:
 353             retval->streamstatus = mediacontrol_EndStatus;
 354             break;
 355         case libvlc_Error:
 356             retval->streamstatus = mediacontrol_ErrorStatus;
 357             break;
 358         default :
 359             retval->streamstatus = mediacontrol_UndefinedStatus;
 360             break;
 361         }
 362
 363         retval->url = libvlc_media_get_mrl( p_media );
 364
 365         retval->position = libvlc_media_player_get_time( self->p_media_player );
 366         retval->length = libvlc_media_player_get_length( self->p_media_player );
 367     }
 368     return retval;
 369 }