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
  26 #include <vlc/libvlc.h>
  27 #include <vlc_playlist.h>
  28
  29 #include <assert.h>
  30
  31 #include "../playlist/playlist_internal.h"
  32
  33 #define PL p_instance->p_libvlc_int->p_playlist
  34
  35 static inline int playlist_was_locked( libvlc_instance_t *p_instance )
  36 {
  37     int was_locked;
  38     vlc_mutex_lock( &p_instance->instance_lock );
  39     was_locked = p_instance->b_playlist_locked;
  40     vlc_mutex_unlock( &p_instance->instance_lock );
  41     return was_locked;
  42 }
  43
  44 static inline void playlist_mark_locked( libvlc_instance_t *p_instance,
  45                                          int locked )
  46 {
  47     vlc_mutex_lock( &p_instance->instance_lock );
  48     p_instance->b_playlist_locked = locked;
  49     vlc_mutex_unlock( &p_instance->instance_lock );
  50 }
  51
  52 void libvlc_playlist_loop( libvlc_instance_t *p_instance, int loop,
  53                            libvlc_exception_t *p_e)
  54 {
  55     VLC_UNUSED(p_e);
  56
  57     assert( PL );
  58     var_SetBool( PL, "loop", loop );
  59 }
  60
  61 void libvlc_playlist_play( libvlc_instance_t *p_instance, int i_id,
  62                            int i_options, char **ppsz_options,
  63                            libvlc_exception_t *p_e )
  64 {
  65     VLC_UNUSED(p_e);
  66
  67     int did_lock = 0;
  68     assert( PL );
  69     ///\todo Handle additionnal options
  70
  71     if( PL->items.i_size == 0 ) RAISEVOID( "Empty playlist" );
  72     if( i_id > 0 )
  73     {
  74         playlist_item_t *p_item;
  75         if (! playlist_was_locked( p_instance ) )
  76         {
  77             playlist_mark_locked( p_instance, 1 );
  78             vlc_mutex_lock( &PL->object_lock );
  79             did_lock = 1;
  80         }
  81
  82         p_item = playlist_ItemGetByInputId( PL, i_id,
  83                                             PL->status.p_node );
  84         if( !p_item )
  85         {
  86             if( did_lock == 1 )
  87             {
  88                 vlc_mutex_unlock( &PL->object_lock );
  89                 playlist_mark_locked( p_instance, 0 );
  90             }
  91             RAISEVOID( "Unable to find item" );
  92         }
  93
  94         playlist_Control( PL, PLAYLIST_VIEWPLAY, true,
  95                           PL->status.p_node, p_item );
  96         if( did_lock == 1 )
  97         {
  98             vlc_mutex_unlock( &PL->object_lock );
  99             playlist_mark_locked( p_instance, 0 );
 100         }
 101     }
 102     else
 103     {
 104         playlist_Control( PL, PLAYLIST_PLAY,
 105                           playlist_was_locked( p_instance ) );
 106     }
 107 }
 108
 109 void libvlc_playlist_pause( libvlc_instance_t *p_instance,
 110                             libvlc_exception_t *p_e )
 111 {
 112     assert( PL );
 113     if( playlist_Control( PL, PLAYLIST_PAUSE,
 114                           playlist_was_locked( p_instance ) ) != VLC_SUCCESS )
 115         RAISEVOID( "Empty playlist" );
 116 }
 117
 118
 119 void libvlc_playlist_stop( libvlc_instance_t *p_instance,
 120                            libvlc_exception_t *p_e )
 121 {
 122     assert( PL );
 123     if( playlist_Control( PL, PLAYLIST_STOP,
 124                           playlist_was_locked( p_instance ) ) != VLC_SUCCESS )
 125         RAISEVOID( "Empty playlist" );
 126 }
 127
 128 void libvlc_playlist_clear( libvlc_instance_t *p_instance,
 129                             libvlc_exception_t *p_e )
 130 {
 131     VLC_UNUSED(p_e);
 132
 133     assert( PL );
 134     playlist_Clear( PL, playlist_was_locked( p_instance ) );
 135 }
 136
 137 void libvlc_playlist_next( libvlc_instance_t *p_instance,
 138                            libvlc_exception_t *p_e )
 139 {
 140     assert( PL );
 141     if( playlist_Control( PL, PLAYLIST_SKIP, playlist_was_locked( p_instance ),
 142                           1 ) != VLC_SUCCESS )
 143         RAISEVOID( "Empty playlist" );
 144 }
 145
 146 void libvlc_playlist_prev( libvlc_instance_t *p_instance,
 147                            libvlc_exception_t *p_e )
 148 {
 149     if( playlist_Control( PL, PLAYLIST_SKIP, playlist_was_locked( p_instance ),
 150                           -1  ) != VLC_SUCCESS )
 151         RAISEVOID( "Empty playlist" );
 152 }
 153
 154 int libvlc_playlist_add( libvlc_instance_t *p_instance, const char *psz_uri,
 155                          const char *psz_name, libvlc_exception_t *p_e )
 156 {
 157     return libvlc_playlist_add_extended( p_instance, psz_uri, psz_name,
 158                                          0, NULL, p_e );
 159 }
 160
 161 int libvlc_playlist_add_extended( libvlc_instance_t *p_instance,
 162                                   const char *psz_uri, const char *psz_name,
 163                                   int i_options, const char **ppsz_options,
 164                                   libvlc_exception_t *p_e )
 165 {
 166     assert( PL );
 167     if( playlist_was_locked( p_instance ) )
 168     {
 169         libvlc_exception_raise( p_e, "You must unlock playlist before "
 170                                "calling libvlc_playlist_add" );
 171         return VLC_EGENERIC;
 172     }
 173     return playlist_AddExt( PL, psz_uri, psz_name,
 174                             PLAYLIST_INSERT, PLAYLIST_END, -1, ppsz_options,
 175                             i_options, 1, false );
 176 }
 177
 178
 179 int libvlc_playlist_delete_item( libvlc_instance_t *p_instance, int i_id,
 180                                  libvlc_exception_t *p_e )
 181 {
 182     assert( PL );
 183
 184     if( playlist_DeleteFromInput( PL, i_id,
 185                                   playlist_was_locked( p_instance ) ) )
 186     {
 187         libvlc_exception_raise( p_e, "deletion failed" );
 188         return VLC_ENOITEM;
 189     }
 190     return VLC_SUCCESS;
 191 }
 192
 193 int libvlc_playlist_isplaying( libvlc_instance_t *p_instance,
 194                                libvlc_exception_t *p_e )
 195 {
 196     VLC_UNUSED(p_e);
 197
 198     assert( PL );
 199     return playlist_IsPlaying( PL );
 200 }
 201
 202 int libvlc_playlist_items_count( libvlc_instance_t *p_instance,
 203                                  libvlc_exception_t *p_e )
 204 {
 205     VLC_UNUSED(p_e);
 206
 207     assert( PL );
 208     return playlist_CurrentSize( PL );
 209 }
 210
 211 void libvlc_playlist_lock( libvlc_instance_t *p_instance )
 212 {
 213     assert( PL );
 214     vlc_mutex_lock( &PL->object_lock );
 215     p_instance->b_playlist_locked = 1;
 216 }
 217
 218 void libvlc_playlist_unlock( libvlc_instance_t *p_instance )
 219 {
 220     assert( PL );
 221     p_instance->b_playlist_locked = 0;
 222     vlc_mutex_unlock( &PL->object_lock );
 223 }
 224
 225 libvlc_media_player_t * libvlc_playlist_get_media_player(
 226                                 libvlc_instance_t *p_instance,
 227                                 libvlc_exception_t *p_e )
 228 {
 229     libvlc_media_player_t *p_mi;
 230     assert( PL );
 231
 232     vlc_mutex_lock( &PL->object_lock );
 233     if( PL->p_input )
 234     {
 235         p_mi = libvlc_media_player_new_from_input_thread(
 236                             p_instance, PL->p_input, p_e );
 237     }
 238     else
 239     {
 240         /* no active input */
 241         p_mi = NULL;
 242         libvlc_exception_raise( p_e, "No active input" );
 243     }
 244     vlc_mutex_unlock( &PL->object_lock );
 245
 246     return p_mi;
 247 }
 248