1 /*****************************************************************************
2 * thread.c : Playlist management functions
3 *****************************************************************************
4 * Copyright © 1999-2008 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
8 * Clément Stenac <zorglub@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
28 #include <vlc_common.h>
30 #include <vlc_input.h>
31 #include <vlc_interface.h>
32 #include <vlc_playlist.h>
33 #include "playlist_internal.h"
35 /*****************************************************************************
37 *****************************************************************************/
38 static void* RunControlThread ( vlc_object_t * );
39 static void* RunPreparse ( vlc_object_t * );
40 static void* RunFetcher ( vlc_object_t * );
41 static void PreparseDestructor ( vlc_object_t * );
42 static void FetcherDestructor ( vlc_object_t * );
44 /*****************************************************************************
45 * Main functions for the global thread
46 *****************************************************************************/
49 * Create the main playlist thread
50 * Additionally to the playlist, this thread controls :
54 * \return an object with a started thread
56 void __playlist_ThreadCreate( vlc_object_t *p_parent )
58 playlist_t *p_playlist = playlist_Create( p_parent );
59 if( !p_playlist ) return;
62 static const char ppname[] = "preparser";
63 p_playlist->p->p_preparse =
64 vlc_custom_create( p_playlist, sizeof( playlist_preparse_t ),
65 VLC_OBJECT_GENERIC, ppname );
66 if( !p_playlist->p->p_preparse )
68 msg_Err( p_playlist, "unable to create preparser" );
69 vlc_object_release( p_playlist );
72 p_playlist->p->p_preparse->i_waiting = 0;
73 p_playlist->p->p_preparse->pp_waiting = NULL;
75 vlc_object_set_destructor( p_playlist->p->p_preparse, PreparseDestructor );
77 vlc_object_attach( p_playlist->p->p_preparse, p_playlist );
78 if( vlc_thread_create( p_playlist->p->p_preparse, "preparser",
79 RunPreparse, VLC_THREAD_PRIORITY_LOW, true ) )
81 msg_Err( p_playlist, "cannot spawn preparse thread" );
82 vlc_object_release( p_playlist->p->p_preparse );
87 static const char fname[] = "fetcher";
88 p_playlist->p->p_fetcher =
89 vlc_custom_create( p_playlist, sizeof( playlist_fetcher_t ),
90 VLC_OBJECT_GENERIC, fname );
91 if( !p_playlist->p->p_fetcher )
93 msg_Err( p_playlist, "unable to create secondary preparser" );
94 vlc_object_release( p_playlist );
97 p_playlist->p->p_fetcher->i_waiting = 0;
98 p_playlist->p->p_fetcher->pp_waiting = NULL;
99 p_playlist->p->p_fetcher->i_art_policy = var_CreateGetInteger( p_playlist,
102 vlc_object_set_destructor( p_playlist->p->p_fetcher, FetcherDestructor );
104 vlc_object_attach( p_playlist->p->p_fetcher, p_playlist );
105 if( vlc_thread_create( p_playlist->p->p_fetcher,
108 VLC_THREAD_PRIORITY_LOW, true ) )
110 msg_Err( p_playlist, "cannot spawn secondary preparse thread" );
111 vlc_object_release( p_playlist->p->p_fetcher );
116 if( vlc_thread_create( p_playlist, "playlist", RunControlThread,
117 VLC_THREAD_PRIORITY_LOW, true ) )
119 msg_Err( p_playlist, "cannot spawn playlist thread" );
120 vlc_object_release( p_playlist );
124 /* The object has been initialized, now attach it */
125 vlc_object_attach( p_playlist, p_parent );
131 * Run the main control thread itself
133 static void* RunControlThread ( vlc_object_t *p_this )
135 playlist_t *p_playlist = (playlist_t*)p_this;
136 /* Tell above that we're ready */
137 vlc_thread_ready( p_playlist );
139 int canc = vlc_savecancel ();
140 vlc_object_lock( p_playlist );
141 while( vlc_object_alive( p_playlist ) )
143 playlist_MainLoop( p_playlist );
145 /* The playlist lock has been unlocked, so we can't tell if
146 * someone has killed us in the meantime. Check now. */
147 if( !vlc_object_alive( p_playlist ) )
150 if( p_playlist->b_cant_sleep )
152 /* 100 ms is an acceptable delay for playlist operations */
153 vlc_object_unlock( p_playlist );
155 msleep( INTF_IDLE_SLEEP*2 );
157 vlc_object_lock( p_playlist );
161 vlc_object_wait( p_playlist );
164 vlc_object_unlock( p_playlist );
166 playlist_LastLoop( p_playlist );
167 vlc_restorecancel (canc);
171 /*****************************************************************************
172 * Preparse-specific functions
173 *****************************************************************************/
174 static void* RunPreparse ( vlc_object_t *p_this )
176 playlist_preparse_t *p_obj = (playlist_preparse_t*)p_this;
179 /* Tell above that we're ready */
180 vlc_thread_ready( p_obj );
181 canc = vlc_savecancel ();
182 playlist_PreparseLoop( p_obj );
183 vlc_restorecancel (canc);
187 static void* RunFetcher( vlc_object_t *p_this )
189 playlist_fetcher_t *p_obj = (playlist_fetcher_t *)p_this;
190 /* Tell above that we're ready */
191 vlc_thread_ready( p_obj );
192 int canc = vlc_savecancel ();
193 playlist_FetcherLoop( p_obj );
194 vlc_restorecancel (canc);
198 static void PreparseDestructor( vlc_object_t * p_this )
200 playlist_preparse_t * p_preparse = (playlist_preparse_t *)p_this;
201 free( p_preparse->pp_waiting );
202 msg_Dbg( p_this, "Destroyed" );
205 static void FetcherDestructor( vlc_object_t * p_this )
207 playlist_fetcher_t * p_fetcher = (playlist_fetcher_t *)p_this;
208 free( p_fetcher->pp_waiting );
209 msg_Dbg( p_this, "Destroyed" );