git.sesse.net Git - vlc/blob - src/control/playlist.c

   1 /*****************************************************************************
   2  * playlist.c: libvlc new API playlist handling functions
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   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 #include "libvlc_internal.h"
  25 #include <vlc/libvlc.h>
  26 #include <vlc_playlist.h>
  27
  28 #include <assert.h>
  29
  30 #include "../playlist/playlist_internal.h"
  31
  32 #define PL p_instance->p_libvlc_int->p_playlist
  33
  34 static inline int playlist_was_locked( libvlc_instance_t *p_instance )
  35 {
  36     int was_locked;
  37     vlc_mutex_lock( &p_instance->instance_lock );
  38     was_locked = p_instance->b_playlist_locked;
  39     vlc_mutex_unlock( &p_instance->instance_lock );
  40     return was_locked;
  41 }
  42
  43 static inline void playlist_mark_locked( libvlc_instance_t *p_instance,
  44                                          int locked )
  45 {
  46     vlc_mutex_lock( &p_instance->instance_lock );
  47     p_instance->b_playlist_locked = locked;
  48     vlc_mutex_unlock( &p_instance->instance_lock );
  49 }
  50
  51 void libvlc_playlist_loop( libvlc_instance_t *p_instance, vlc_bool_t loop,
  52                            libvlc_exception_t *p_e)
  53 {
  54     assert( PL );
  55     var_SetBool( PL, "loop", loop );
  56 }
  57
  58 void libvlc_playlist_play( libvlc_instance_t *p_instance, int i_id,
  59                            int i_options, char **ppsz_options,
  60                            libvlc_exception_t *p_e )
  61 {
  62     int did_lock = 0;
  63     assert( PL );
  64     ///\todo Handle additionnal options
  65
  66     if( PL->items.i_size == 0 ) RAISEVOID( "Empty playlist" );
  67     if( i_id > 0 )
  68     {
  69         playlist_item_t *p_item;
  70         if (! playlist_was_locked( p_instance ) )
  71         {
  72             playlist_mark_locked( p_instance, 1 );
  73             vlc_mutex_lock( &PL->object_lock );
  74             did_lock = 1;
  75         }
  76
  77         p_item = playlist_ItemGetByInputId( PL, i_id,
  78                                             PL->status.p_node );
  79         if( !p_item )
  80         {
  81             if( did_lock == 1 )
  82             {
  83                 vlc_mutex_unlock( &PL->object_lock );
  84                 playlist_mark_locked( p_instance, 0 );
  85             }
  86             RAISEVOID( "Unable to find item" );
  87         }
  88
  89         playlist_Control( PL, PLAYLIST_VIEWPLAY, VLC_TRUE,
  90                           PL->status.p_node, p_item );
  91         if( did_lock == 1 )
  92         {
  93             vlc_mutex_unlock( &PL->object_lock );
  94             playlist_mark_locked( p_instance, 0 );
  95         }
  96     }
  97     else
  98     {
  99         playlist_Control( PL, PLAYLIST_PLAY,
 100                           playlist_was_locked( p_instance ) );
 101     }
 102 }
 103
 104 void libvlc_playlist_pause( libvlc_instance_t *p_instance,
 105                             libvlc_exception_t *p_e )
 106 {
 107     assert( PL );
 108     if( playlist_Control( PL, PLAYLIST_PAUSE,
 109                           playlist_was_locked( p_instance ) ) != VLC_SUCCESS )
 110         RAISEVOID( "Empty playlist" );
 111 }
 112
 113
 114 void libvlc_playlist_stop( libvlc_instance_t *p_instance,
 115                            libvlc_exception_t *p_e )
 116 {
 117     assert( PL );
 118     if( playlist_Control( PL, PLAYLIST_STOP,
 119                           playlist_was_locked( p_instance ) ) != VLC_SUCCESS )
 120         RAISEVOID( "Empty playlist" );
 121 }
 122
 123 void libvlc_playlist_clear( libvlc_instance_t *p_instance,
 124                             libvlc_exception_t *p_e )
 125 {
 126     assert( PL );
 127     playlist_Clear( PL, playlist_was_locked( p_instance ) );
 128 }
 129
 130 void libvlc_playlist_next( libvlc_instance_t *p_instance,
 131                            libvlc_exception_t *p_e )
 132 {
 133     assert( PL );
 134     if( playlist_Control( PL, PLAYLIST_SKIP, playlist_was_locked( p_instance ),
 135                           1 ) != VLC_SUCCESS )
 136         RAISEVOID( "Empty playlist" );
 137 }
 138
 139 void libvlc_playlist_prev( libvlc_instance_t *p_instance,
 140                            libvlc_exception_t *p_e )
 141 {
 142     if( playlist_Control( PL, PLAYLIST_SKIP, playlist_was_locked( p_instance ),
 143                           -1  ) != VLC_SUCCESS )
 144         RAISEVOID( "Empty playlist" );
 145 }
 146
 147 int libvlc_playlist_add( libvlc_instance_t *p_instance, const char *psz_uri,
 148                          const char *psz_name, libvlc_exception_t *p_e )
 149 {
 150     return libvlc_playlist_add_extended( p_instance, psz_uri, psz_name,
 151                                          0, NULL, p_e );
 152 }
 153
 154 int libvlc_playlist_add_extended( libvlc_instance_t *p_instance,
 155                                   const char *psz_uri, const char *psz_name,
 156                                   int i_options, const char **ppsz_options,
 157                                   libvlc_exception_t *p_e )
 158 {
 159     assert( PL );
 160     if( playlist_was_locked( p_instance ) )
 161     {
 162         libvlc_exception_raise( p_e, "You must unlock playlist before "
 163                                "calling libvlc_playlist_add" );
 164         return VLC_EGENERIC;
 165     }
 166     return playlist_AddExt( PL, psz_uri, psz_name,
 167                             PLAYLIST_INSERT, PLAYLIST_END, -1, ppsz_options,
 168                             i_options, 1, VLC_FALSE );
 169 }
 170
 171
 172 int libvlc_playlist_delete_item( libvlc_instance_t *p_instance, int i_id,
 173                                  libvlc_exception_t *p_e )
 174 {
 175     assert( PL );
 176
 177     if( playlist_DeleteFromInput( PL, i_id,
 178                                   playlist_was_locked( p_instance ) ) )
 179     {
 180         libvlc_exception_raise( p_e, "deletion failed" );
 181         return VLC_ENOITEM;
 182     }
 183     return VLC_SUCCESS;
 184 }
 185
 186 int libvlc_playlist_isplaying( libvlc_instance_t *p_instance,
 187                                libvlc_exception_t *p_e )
 188 {
 189     assert( PL );
 190     return playlist_IsPlaying( PL );
 191 }
 192
 193 int libvlc_playlist_items_count( libvlc_instance_t *p_instance,
 194                                  libvlc_exception_t *p_e )
 195 {
 196     assert( PL );
 197     return playlist_CurrentSize( PL );
 198 }
 199
 200 void libvlc_playlist_lock( libvlc_instance_t *p_instance )
 201 {
 202     assert( PL );
 203     vlc_mutex_lock( &PL->object_lock );
 204     p_instance->b_playlist_locked = 1;
 205 }
 206
 207 void libvlc_playlist_unlock( libvlc_instance_t *p_instance )
 208 {
 209     assert( PL );
 210     p_instance->b_playlist_locked = 0;
 211     vlc_mutex_unlock( &PL->object_lock );
 212 }
 213
 214 libvlc_media_instance_t * libvlc_playlist_get_media_instance(
 215                                 libvlc_instance_t *p_instance,
 216                                 libvlc_exception_t *p_e )
 217 {
 218     libvlc_media_instance_t *p_mi;
 219     assert( PL );
 220
 221     vlc_mutex_lock( &PL->object_lock );
 222     if( PL->p_input )
 223     {
 224         p_mi = libvlc_media_instance_new_from_input_thread(
 225                             p_instance, PL->p_input, p_e );
 226     }
 227     else
 228         /* no active input */
 229         p_mi = NULL;
 230
 231     vlc_mutex_unlock( &PL->object_lock );
 232
 233     return p_mi;
 234 }
 235