1 /*****************************************************************************
2 * preparse.c: Preparser thread.
3 *****************************************************************************
4 * Copyright © 1999-2009 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>
29 #include <vlc_playlist.h>
33 #include "preparser.h"
34 #include "../input/input_interface.h"
36 static void *Thread( void * );
38 playlist_preparser_t *playlist_preparser_New( playlist_t *p_playlist, playlist_fetcher_t *p_fetcher )
40 playlist_preparser_t *p_preparser = malloc( sizeof(*p_preparser) );
44 p_preparser->p_playlist = p_playlist;
45 p_preparser->p_fetcher = p_fetcher;
46 vlc_mutex_init( &p_preparser->lock );
47 vlc_cond_init( &p_preparser->wait );
48 p_preparser->i_waiting = 0;
49 p_preparser->pp_waiting = NULL;
51 if( vlc_clone( &p_preparser->thread, Thread, p_preparser,
52 VLC_THREAD_PRIORITY_LOW ) )
54 msg_Err( p_playlist, "cannot spawn preparse thread" );
61 void playlist_preparser_Push( playlist_preparser_t *p_preparser, input_item_t *p_item )
63 vlc_gc_incref( p_item );
65 vlc_mutex_lock( &p_preparser->lock );
66 INSERT_ELEM( p_preparser->pp_waiting, p_preparser->i_waiting,
67 p_preparser->i_waiting, p_item );
68 vlc_cond_signal( &p_preparser->wait );
69 vlc_mutex_unlock( &p_preparser->lock );
72 void playlist_preparser_Delete( playlist_preparser_t *p_preparser )
74 /* Destroy the item preparser */
75 vlc_cancel( p_preparser->thread );
76 vlc_join( p_preparser->thread, NULL );
78 while( p_preparser->i_waiting > 0 )
79 { /* Any left-over unparsed item? */
80 vlc_gc_decref( p_preparser->pp_waiting[0] );
81 REMOVE_ELEM( p_preparser->pp_waiting, p_preparser->i_waiting, 0 );
83 vlc_cond_destroy( &p_preparser->wait );
84 vlc_mutex_destroy( &p_preparser->lock );
87 static void *Thread( void *data )
89 playlist_preparser_t *p_preparser = data;
90 playlist_t *p_playlist = p_preparser->p_playlist;
91 playlist_fetcher_t *p_fetcher = p_preparser->p_fetcher;
95 input_item_t *p_current;
98 vlc_mutex_lock( &p_preparser->lock );
99 mutex_cleanup_push( &p_preparser->lock );
101 while( p_preparser->i_waiting == 0 )
102 vlc_cond_wait( &p_preparser->wait, &p_preparser->lock );
104 p_current = p_preparser->pp_waiting[0];
105 REMOVE_ELEM( p_preparser->pp_waiting, p_preparser->i_waiting, 0 );
111 int canc = vlc_savecancel ();
114 if( p_current->i_type == ITEM_TYPE_FILE )
116 stats_TimerStart( p_playlist, "Preparse run",
117 STATS_TIMER_PREPARSE );
118 /* Do not preparse if it is already done (like by playing it) */
119 if( !input_item_IsPreparsed( p_current ) )
122 input_Preparse( p_playlist, p_current );
125 stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
127 input_item_SetPreparsed( p_current, true );
128 var_SetInteger( p_playlist, "item-change", p_current->i_id );
131 /* If we haven't retrieved enough meta, add to secondary queue
132 * which will run the "meta fetchers".
133 * This only checks for meta, not for art
134 * \todo don't do this for things we won't get meta for, like vids
136 char *psz_arturl = input_item_GetArtURL( p_current );
137 char *psz_name = input_item_GetName( p_current );
138 if( p_fetcher && p_fetcher->i_art_policy == ALBUM_ART_ALL &&
139 ( !psz_arturl || strncmp( psz_arturl, "file://", 7 ) ) )
141 msg_Dbg( p_playlist, "meta ok for %s, need to fetch art", psz_name );
142 playlist_fetcher_Push( p_fetcher, p_current );
146 msg_Dbg( p_playlist, "no fetch required for %s (art currently %s)",
147 psz_name, psz_arturl );
149 vlc_gc_decref( p_current );
154 vlc_restorecancel( canc );
156 int i_activity = var_GetInteger( p_playlist, "activity" );
157 if( i_activity < 0 ) i_activity = 0;
158 /* Sleep at least 1ms */
159 msleep( (i_activity+1) * 1000 );