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 ( playlist_t * );
39 static void RunPreparse( playlist_preparse_t * );
40 static void RunFetcher( playlist_fetcher_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_preparse =
64 vlc_custom_create( p_playlist, sizeof( playlist_preparse_t ),
65 VLC_OBJECT_GENERIC, ppname );
66 if( !p_playlist->p_preparse )
68 msg_Err( p_playlist, "unable to create preparser" );
69 vlc_object_release( p_playlist );
72 p_playlist->p_preparse->psz_object_name = strdup( "preparser" );
73 p_playlist->p_preparse->i_waiting = 0;
74 p_playlist->p_preparse->pp_waiting = NULL;
76 vlc_object_set_destructor( p_playlist->p_preparse, PreparseDestructor );
78 vlc_object_attach( p_playlist->p_preparse, p_playlist );
79 if( vlc_thread_create( p_playlist->p_preparse, "preparser",
80 RunPreparse, VLC_THREAD_PRIORITY_LOW, true ) )
82 msg_Err( p_playlist, "cannot spawn preparse thread" );
83 vlc_object_release( p_playlist->p_preparse );
88 static const char fname[] = "fetcher";
89 p_playlist->p_fetcher =
90 vlc_custom_create( p_playlist, sizeof( playlist_fetcher_t ),
91 VLC_OBJECT_GENERIC, fname );
92 if( !p_playlist->p_fetcher )
94 msg_Err( p_playlist, "unable to create secondary preparser" );
95 vlc_object_release( p_playlist );
98 p_playlist->p_fetcher->psz_object_name = strdup( "fetcher" );
99 p_playlist->p_fetcher->i_waiting = 0;
100 p_playlist->p_fetcher->pp_waiting = NULL;
101 p_playlist->p_fetcher->i_art_policy = var_CreateGetInteger( p_playlist,
104 vlc_object_set_destructor( p_playlist->p_fetcher, FetcherDestructor );
106 vlc_object_attach( p_playlist->p_fetcher, p_playlist );
107 if( vlc_thread_create( p_playlist->p_fetcher,
110 VLC_THREAD_PRIORITY_LOW, true ) )
112 msg_Err( p_playlist, "cannot spawn secondary preparse thread" );
113 vlc_object_release( p_playlist->p_fetcher );
118 if( vlc_thread_create( p_playlist, "playlist", RunControlThread,
119 VLC_THREAD_PRIORITY_LOW, true ) )
121 msg_Err( p_playlist, "cannot spawn playlist thread" );
122 vlc_object_release( p_playlist );
126 /* The object has been initialized, now attach it */
127 vlc_object_attach( p_playlist, p_parent );
133 * Run the main control thread itself
135 static void RunControlThread ( playlist_t *p_playlist )
137 /* Tell above that we're ready */
138 vlc_thread_ready( p_playlist );
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 );
169 /*****************************************************************************
170 * Preparse-specific functions
171 *****************************************************************************/
172 static void RunPreparse ( playlist_preparse_t *p_obj )
174 /* Tell above that we're ready */
175 vlc_thread_ready( p_obj );
176 playlist_PreparseLoop( p_obj );
179 static void RunFetcher( playlist_fetcher_t *p_obj )
181 /* Tell above that we're ready */
182 vlc_thread_ready( p_obj );
183 playlist_FetcherLoop( p_obj );
186 static void PreparseDestructor( vlc_object_t * p_this )
188 playlist_preparse_t * p_preparse = (playlist_preparse_t *)p_this;
189 free( p_preparse->pp_waiting );
190 msg_Dbg( p_this, "Destroyed" );
193 static void FetcherDestructor( vlc_object_t * p_this )
195 playlist_fetcher_t * p_fetcher = (playlist_fetcher_t *)p_this;
196 free( p_fetcher->pp_waiting );
197 msg_Dbg( p_this, "Destroyed" );