1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
/*****************************************************************************
* thread.c : Playlist management functions
*****************************************************************************
* Copyright © 1999-2008 the VideoLAN team
* $Id$
*
* Authors: Samuel Hocevar <sam@zoy.org>
* Clément Stenac <zorglub@videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_es.h>
#include <vlc_input.h>
#include <vlc_interface.h>
#include <vlc_playlist.h>
#include "playlist_internal.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static void* RunControlThread ( vlc_object_t * );
static void* RunPreparse ( vlc_object_t * );
static void* RunFetcher ( vlc_object_t * );
static void PreparseDestructor ( vlc_object_t * );
static void FetcherDestructor ( vlc_object_t * );
/*****************************************************************************
* Main functions for the global thread
*****************************************************************************/
/**
* Create the main playlist thread
* Additionally to the playlist, this thread controls :
* - Statistics
* - VLM
* \param p_parent
* \return an object with a started thread
*/
void __playlist_ThreadCreate( vlc_object_t *p_parent )
{
playlist_t *p_playlist = playlist_Create( p_parent );
if( !p_playlist ) return;
// Preparse
static const char ppname[] = "preparser";
p_playlist->p_preparse =
vlc_custom_create( p_playlist, sizeof( playlist_preparse_t ),
VLC_OBJECT_GENERIC, ppname );
if( !p_playlist->p_preparse )
{
msg_Err( p_playlist, "unable to create preparser" );
vlc_object_release( p_playlist );
return;
}
p_playlist->p_preparse->psz_object_name = strdup( "preparser" );
p_playlist->p_preparse->i_waiting = 0;
p_playlist->p_preparse->pp_waiting = NULL;
vlc_object_set_destructor( p_playlist->p_preparse, PreparseDestructor );
vlc_object_attach( p_playlist->p_preparse, p_playlist );
if( vlc_thread_create( p_playlist->p_preparse, "preparser",
RunPreparse, VLC_THREAD_PRIORITY_LOW, true ) )
{
msg_Err( p_playlist, "cannot spawn preparse thread" );
vlc_object_release( p_playlist->p_preparse );
return;
}
// Secondary Preparse
static const char fname[] = "fetcher";
p_playlist->p_fetcher =
vlc_custom_create( p_playlist, sizeof( playlist_fetcher_t ),
VLC_OBJECT_GENERIC, fname );
if( !p_playlist->p_fetcher )
{
msg_Err( p_playlist, "unable to create secondary preparser" );
vlc_object_release( p_playlist );
return;
}
p_playlist->p_fetcher->psz_object_name = strdup( "fetcher" );
p_playlist->p_fetcher->i_waiting = 0;
p_playlist->p_fetcher->pp_waiting = NULL;
p_playlist->p_fetcher->i_art_policy = var_CreateGetInteger( p_playlist,
"album-art" );
vlc_object_set_destructor( p_playlist->p_fetcher, FetcherDestructor );
vlc_object_attach( p_playlist->p_fetcher, p_playlist );
if( vlc_thread_create( p_playlist->p_fetcher,
"fetcher",
RunFetcher,
VLC_THREAD_PRIORITY_LOW, true ) )
{
msg_Err( p_playlist, "cannot spawn secondary preparse thread" );
vlc_object_release( p_playlist->p_fetcher );
return;
}
// Start the thread
if( vlc_thread_create( p_playlist, "playlist", RunControlThread,
VLC_THREAD_PRIORITY_LOW, true ) )
{
msg_Err( p_playlist, "cannot spawn playlist thread" );
vlc_object_release( p_playlist );
return;
}
/* The object has been initialized, now attach it */
vlc_object_attach( p_playlist, p_parent );
return;
}
/**
* Run the main control thread itself
*/
static void* RunControlThread ( vlc_object_t *p_this )
{
playlist_t *p_playlist = (playlist_t*)p_this;
/* Tell above that we're ready */
vlc_thread_ready( p_playlist );
int canc = vlc_savecancel ();
vlc_object_lock( p_playlist );
while( vlc_object_alive( p_playlist ) )
{
playlist_MainLoop( p_playlist );
/* The playlist lock has been unlocked, so we can't tell if
* someone has killed us in the meantime. Check now. */
if( !vlc_object_alive( p_playlist ) )
break;
if( p_playlist->b_cant_sleep )
{
/* 100 ms is an acceptable delay for playlist operations */
vlc_object_unlock( p_playlist );
msleep( INTF_IDLE_SLEEP*2 );
vlc_object_lock( p_playlist );
}
else
{
vlc_object_wait( p_playlist );
}
}
vlc_object_unlock( p_playlist );
playlist_LastLoop( p_playlist );
vlc_restorecancel (canc);
return NULL;
}
/*****************************************************************************
* Preparse-specific functions
*****************************************************************************/
static void* RunPreparse ( vlc_object_t *p_this )
{
playlist_preparse_t *p_obj = (playlist_preparse_t*)p_this;
int canc;
/* Tell above that we're ready */
vlc_thread_ready( p_obj );
canc = vlc_savecancel ();
playlist_PreparseLoop( p_obj );
vlc_restorecancel (canc);
return NULL;
}
static void* RunFetcher( vlc_object_t *p_this )
{
playlist_fetcher_t *p_obj = (playlist_fetcher_t *)p_this;
/* Tell above that we're ready */
vlc_thread_ready( p_obj );
int canc = vlc_savecancel ();
playlist_FetcherLoop( p_obj );
vlc_restorecancel (canc);
return NULL;
}
static void PreparseDestructor( vlc_object_t * p_this )
{
playlist_preparse_t * p_preparse = (playlist_preparse_t *)p_this;
free( p_preparse->pp_waiting );
msg_Dbg( p_this, "Destroyed" );
}
static void FetcherDestructor( vlc_object_t * p_this )
{
playlist_fetcher_t * p_fetcher = (playlist_fetcher_t *)p_this;
free( p_fetcher->pp_waiting );
msg_Dbg( p_this, "Destroyed" );
}