1 /*****************************************************************************
2 * engine.c : Run the playlist and handle its control
3 *****************************************************************************
4 * Copyright (C) 1999-2008 the VideoLAN team
6 * Authors: Samuel Hocevar <sam@zoy.org>
7 * Clément Stenac <zorglub@videolan.org>
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.
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.
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 *****************************************************************************/
30 #include <vlc_common.h>
32 #include <vlc_playlist.h>
33 #include <vlc_interface.h>
34 #include "playlist_internal.h"
35 #include "stream_output/stream_output.h" /* sout_DeleteInstance */
37 /*****************************************************************************
39 *****************************************************************************/
40 static void VariablesInit( playlist_t *p_playlist );
41 static void playlist_Destructor( vlc_object_t * p_this );
43 static int RandomCallback( vlc_object_t *p_this, char const *psz_cmd,
44 vlc_value_t oldval, vlc_value_t newval, void *a )
46 (void)psz_cmd; (void)oldval; (void)newval; (void)a;
47 playlist_t *p_playlist = (playlist_t*)p_this;
51 pl_priv(p_playlist)->b_reset_currently_playing = true;
52 vlc_cond_signal( &pl_priv(p_playlist)->signal );
61 * Create a playlist structure.
62 * \param p_parent the vlc object that is to be the parent of this playlist
63 * \return a pointer to the created playlist, or NULL on error
65 playlist_t * playlist_Create( vlc_object_t *p_parent )
67 static const char playlist_name[] = "playlist";
68 playlist_t *p_playlist;
69 playlist_private_t *p;
71 /* Allocate structure */
72 p = vlc_custom_create( p_parent, sizeof( *p ),
73 VLC_OBJECT_GENERIC, playlist_name );
77 assert( offsetof( playlist_private_t, public_data ) == 0 );
78 p_playlist = &p->public_data;
79 TAB_INIT( pl_priv(p_playlist)->i_sds, pl_priv(p_playlist)->pp_sds );
81 libvlc_priv(p_parent->p_libvlc)->p_playlist = p_playlist;
83 VariablesInit( p_playlist );
84 vlc_mutex_init( &p->lock );
85 vlc_cond_init( &p->signal );
87 /* Initialise data structures */
88 pl_priv(p_playlist)->i_last_playlist_id = 0;
89 pl_priv(p_playlist)->p_input = NULL;
91 ARRAY_INIT( p_playlist->items );
92 ARRAY_INIT( p_playlist->all_items );
93 ARRAY_INIT( pl_priv(p_playlist)->items_to_delete );
94 ARRAY_INIT( p_playlist->current );
96 p_playlist->i_current_index = 0;
97 pl_priv(p_playlist)->b_reset_currently_playing = true;
98 pl_priv(p_playlist)->last_rebuild_date = 0;
100 pl_priv(p_playlist)->b_tree = var_InheritBool( p_parent, "playlist-tree" );
102 pl_priv(p_playlist)->b_doing_ml = false;
104 pl_priv(p_playlist)->b_auto_preparse =
105 var_InheritBool( p_parent, "auto-preparse" );
107 PL_LOCK; /* playlist_NodeCreate will check for it */
108 p_playlist->p_root_category = playlist_NodeCreate( p_playlist, NULL, NULL,
110 p_playlist->p_root_onelevel = playlist_NodeCreate( p_playlist, NULL, NULL,
111 0, p_playlist->p_root_category->p_input );
114 if( !p_playlist->p_root_category || !p_playlist->p_root_onelevel )
117 /* Create playlist and media library */
118 PL_LOCK; /* playlist_NodesPairCreate will check for it */
119 playlist_NodesPairCreate( p_playlist, _( "Playlist" ),
120 &p_playlist->p_local_category,
121 &p_playlist->p_local_onelevel, false );
124 p_playlist->p_local_category->i_flags |= PLAYLIST_RO_FLAG;
125 p_playlist->p_local_onelevel->i_flags |= PLAYLIST_RO_FLAG;
127 if( !p_playlist->p_local_category || !p_playlist->p_local_onelevel ||
128 !p_playlist->p_local_category->p_input ||
129 !p_playlist->p_local_onelevel->p_input )
132 const bool b_ml = var_InheritBool( p_parent, "media-library");
135 PL_LOCK; /* playlist_NodesPairCreate will check for it */
136 playlist_NodesPairCreate( p_playlist, _( "Media Library" ),
137 &p_playlist->p_ml_category,
138 &p_playlist->p_ml_onelevel, false );
141 if(!p_playlist->p_ml_category || !p_playlist->p_ml_onelevel)
144 p_playlist->p_ml_category->i_flags |= PLAYLIST_RO_FLAG;
145 p_playlist->p_ml_onelevel->i_flags |= PLAYLIST_RO_FLAG;
149 p_playlist->p_ml_category = p_playlist->p_ml_onelevel = NULL;
153 pl_priv(p_playlist)->status.p_item = NULL;
154 pl_priv(p_playlist)->status.p_node = p_playlist->p_local_onelevel;
155 pl_priv(p_playlist)->request.b_request = false;
156 pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
160 const bool b_auto_preparse = pl_priv(p_playlist)->b_auto_preparse;
161 pl_priv(p_playlist)->b_auto_preparse = false;
162 playlist_MLLoad( p_playlist );
163 pl_priv(p_playlist)->b_auto_preparse = b_auto_preparse;
166 vlc_object_set_destructor( p_playlist, playlist_Destructor );
174 * Destroy a playlist structure.
175 * \param p_playlist the playlist object
179 static void playlist_Destructor( vlc_object_t * p_this )
181 playlist_t *p_playlist = (playlist_t *)p_this;
182 playlist_private_t *p_sys = pl_priv(p_playlist);
184 assert( !p_sys->p_input );
185 assert( !p_sys->p_input_resource );
186 assert( !p_sys->p_preparser );
187 assert( !p_sys->p_fetcher );
189 vlc_cond_destroy( &p_sys->signal );
190 vlc_mutex_destroy( &p_sys->lock );
192 /* Remove all remaining items */
193 FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
194 free( p_del->pp_children );
195 vlc_gc_decref( p_del->p_input );
198 ARRAY_RESET( p_playlist->all_items );
199 FOREACH_ARRAY( playlist_item_t *p_del, p_sys->items_to_delete )
200 free( p_del->pp_children );
201 vlc_gc_decref( p_del->p_input );
204 ARRAY_RESET( p_sys->items_to_delete );
206 ARRAY_RESET( p_playlist->items );
207 ARRAY_RESET( p_playlist->current );
209 msg_Dbg( p_this, "Destroyed" );
212 /** Get current playing input.
214 input_thread_t * playlist_CurrentInput( playlist_t * p_playlist )
216 input_thread_t * p_input;
218 p_input = pl_priv(p_playlist)->p_input;
219 if( p_input ) vlc_object_hold( p_input );
228 /** Accessor for status item and status nodes.
230 playlist_item_t * get_current_status_item( playlist_t * p_playlist )
234 return pl_priv(p_playlist)->status.p_item;
237 playlist_item_t * get_current_status_node( playlist_t * p_playlist )
241 return pl_priv(p_playlist)->status.p_node;
244 void set_current_status_item( playlist_t * p_playlist,
245 playlist_item_t * p_item )
249 if( pl_priv(p_playlist)->status.p_item &&
250 pl_priv(p_playlist)->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG &&
251 pl_priv(p_playlist)->status.p_item != p_item )
253 /* It's unsafe given current design to delete a playlist item :(
254 playlist_ItemDelete( pl_priv(p_playlist)->status.p_item ); */
256 pl_priv(p_playlist)->status.p_item = p_item;
259 void set_current_status_node( playlist_t * p_playlist,
260 playlist_item_t * p_node )
264 if( pl_priv(p_playlist)->status.p_node &&
265 pl_priv(p_playlist)->status.p_node->i_flags & PLAYLIST_REMOVE_FLAG &&
266 pl_priv(p_playlist)->status.p_node != p_node )
268 /* It's unsafe given current design to delete a playlist item :(
269 playlist_ItemDelete( pl_priv(p_playlist)->status.p_node ); */
271 pl_priv(p_playlist)->status.p_node = p_node;
274 static void VariablesInit( playlist_t *p_playlist )
276 /* These variables control updates */
277 var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
278 var_SetBool( p_playlist, "intf-change", true );
280 var_Create( p_playlist, "item-change", VLC_VAR_ADDRESS );
282 var_Create( p_playlist, "playlist-item-deleted", VLC_VAR_INTEGER );
283 var_SetInteger( p_playlist, "playlist-item-deleted", -1 );
285 var_Create( p_playlist, "playlist-item-append", VLC_VAR_ADDRESS );
287 var_Create( p_playlist, "item-current", VLC_VAR_ADDRESS );
288 var_Create( p_playlist, "input-current", VLC_VAR_ADDRESS );
290 var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
291 var_SetInteger( p_playlist, "activity", 0 );
293 /* Variables to control playback */
294 var_Create( p_playlist, "play-and-stop", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
295 var_Create( p_playlist, "play-and-exit", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
296 var_Create( p_playlist, "random", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
297 var_Create( p_playlist, "repeat", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
298 var_Create( p_playlist, "loop", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
300 var_AddCallback( p_playlist, "random", RandomCallback, NULL );
303 var_Create( p_playlist, "album-art", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
306 playlist_item_t * playlist_CurrentPlayingItem( playlist_t * p_playlist )
310 return pl_priv(p_playlist)->status.p_item;
313 int playlist_Status( playlist_t * p_playlist )
317 return pl_priv(p_playlist)->status.i_status;