Fetcher: use nornal thread API
[vlc.git] / src / playlist / thread.c
1 /*****************************************************************************
2  * thread.c : Playlist management functions
3  *****************************************************************************
4  * Copyright © 1999-2008 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Samuel Hocevar <sam@zoy.org>
8  *          Clément Stenac <zorglub@videolan.org>
9  *
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.
14  *
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.
19  *
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  *****************************************************************************/
24 #ifdef HAVE_CONFIG_H
25 # include "config.h"
26 #endif
27
28 #include <vlc_common.h>
29 #include <vlc_es.h>
30 #include <vlc_input.h>
31 #include <vlc_interface.h>
32 #include <vlc_playlist.h>
33 #include "playlist_internal.h"
34
35 /*****************************************************************************
36  * Local prototypes
37  *****************************************************************************/
38 static void* RunControlThread   ( vlc_object_t * );
39
40 /*****************************************************************************
41  * Main functions for the global thread
42  *****************************************************************************/
43
44 /**
45  * Create the main playlist thread
46  * Additionally to the playlist, this thread controls :
47  *    - Statistics
48  *    - VLM
49  * \param p_parent
50  * \return an object with a started thread
51  */
52 void __playlist_ThreadCreate( vlc_object_t *p_parent )
53 {
54     playlist_t *p_playlist = playlist_Create( p_parent );
55     if( !p_playlist ) return;
56
57     // Preparse
58     playlist_preparse_t *p_preparse = &pl_priv(p_playlist)->preparse;
59     vlc_mutex_init (&p_preparse->lock);
60     vlc_cond_init (&p_preparse->wait);
61     p_preparse->i_waiting = 0;
62     p_preparse->pp_waiting = NULL;
63
64     if( vlc_clone( &p_preparse->thread, playlist_PreparseLoop, p_preparse,
65                    VLC_THREAD_PRIORITY_LOW ) )
66     {
67         msg_Err( p_playlist, "cannot spawn preparse thread" );
68         p_preparse->up = false;
69         return;
70     }
71     p_preparse->up = true;
72
73     // Secondary Preparse
74     playlist_fetcher_t *p_fetcher = &pl_priv(p_playlist)->fetcher;
75     vlc_mutex_init (&p_fetcher->lock);
76     vlc_cond_init (&p_fetcher->wait);
77     p_fetcher->i_waiting = 0;
78     p_fetcher->pp_waiting = NULL;
79     p_fetcher->i_art_policy = var_CreateGetInteger( p_playlist, "album-art" );
80
81     if( vlc_clone( &p_fetcher->thread, playlist_FetcherLoop, p_fetcher,
82                    VLC_THREAD_PRIORITY_LOW ) )
83     {
84         msg_Err( p_playlist, "cannot spawn secondary preparse thread" );
85         p_fetcher->up = false;
86         return;
87     }
88     p_fetcher->up = true;
89
90     // Start the thread
91     if( vlc_thread_create( p_playlist, "playlist", RunControlThread,
92                            VLC_THREAD_PRIORITY_LOW, false ) )
93     {
94         msg_Err( p_playlist, "cannot spawn playlist thread" );
95         vlc_object_release( p_playlist );
96         return;
97     }
98
99     /* The object has been initialized, now attach it */
100     vlc_object_attach( p_playlist, p_parent );
101
102     return;
103 }
104
105 /**
106  * Run the main control thread itself
107  */
108 static void* RunControlThread ( vlc_object_t *p_this )
109 {
110     playlist_t *p_playlist = (playlist_t*)p_this;
111
112     int canc = vlc_savecancel ();
113     vlc_object_lock( p_playlist );
114     while( vlc_object_alive( p_playlist ) )
115     {
116         playlist_MainLoop( p_playlist );
117
118         /* The playlist lock has been unlocked, so we can't tell if
119          * someone has killed us in the meantime. Check now. */
120         if( !vlc_object_alive( p_playlist ) )
121             break;
122
123         if( p_playlist->b_cant_sleep )
124         {
125             /* 100 ms is an acceptable delay for playlist operations */
126             vlc_object_unlock( p_playlist );
127
128             msleep( INTF_IDLE_SLEEP*2 );
129
130             vlc_object_lock( p_playlist );
131         }
132         else
133         {
134             vlc_object_wait( p_playlist );
135         }
136     }
137     vlc_object_unlock( p_playlist );
138
139     playlist_LastLoop( p_playlist );
140     vlc_restorecancel (canc);
141     return NULL;
142 }