thread.c 7.69 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
/*****************************************************************************
 * playlist.c : Playlist management functions
 *****************************************************************************
 * Copyright (C) 1999-2004 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.
 *****************************************************************************/
#include <vlc/vlc.h>
Jean-Paul Saman's avatar
Jean-Paul Saman committed
25
#include <vlc_es.h>
26
#include <vlc_input.h>
zorglub's avatar
zorglub committed
27
28
#include <vlc_interface.h>
#include <vlc_playlist.h>
29
#include "playlist_internal.h"
zorglub's avatar
zorglub committed
30
#include "interface/interface.h"
31
32
33
34
35
36

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static void RunControlThread ( playlist_t * );
static void RunPreparse( playlist_preparse_t * );
37
static void RunFetcher( playlist_fetcher_t * );
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57

static playlist_t * CreatePlaylist( vlc_object_t *p_parent );
static void EndPlaylist( playlist_t * );
static void DestroyPlaylist( playlist_t * );

static void DestroyInteraction( playlist_t * );

/*****************************************************************************
 * Main functions for the global thread
 *****************************************************************************/

/**
 * Create the main playlist thread
 * Additionally to the playlist, this thread controls :
 *    - Interaction
 *    - Statistics
 *    - VLM
 * \param p_parent
 * \return an object with a started thread
 */
58
void __playlist_ThreadCreate( vlc_object_t *p_parent )
59
60
61
62
{
    playlist_t *p_playlist;
    p_playlist = CreatePlaylist( p_parent );

63
    if( !p_playlist ) return;
64
65
66
67

    // Stats
    p_playlist->p_stats = (global_stats_t *)malloc( sizeof( global_stats_t ) );
    vlc_mutex_init( p_playlist, &p_playlist->p_stats->lock );
68
    p_playlist->p_stats_computer = NULL;
69
70
71
72
73
74
75
76
77
78
79

    // Interaction
    p_playlist->p_interaction = NULL;

    // Preparse
    p_playlist->p_preparse = vlc_object_create( p_playlist,
                                  sizeof( playlist_preparse_t ) );
    if( !p_playlist->p_preparse )
    {
        msg_Err( p_playlist, "unable to create preparser" );
        vlc_object_destroy( p_playlist );
80
        return;
81
82
83
84
85
86
87
88
89
90
91
    }
    p_playlist->p_preparse->i_waiting = 0;
    p_playlist->p_preparse->pp_waiting = NULL;

    vlc_object_attach( p_playlist->p_preparse, p_playlist );
    if( vlc_thread_create( p_playlist->p_preparse, "preparser",
                           RunPreparse, VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
    {
        msg_Err( p_playlist, "cannot spawn preparse thread" );
        vlc_object_detach( p_playlist->p_preparse );
        vlc_object_destroy( p_playlist->p_preparse );
92
        return;
93
94
    }

95
    // Secondary Preparse
96
97
98
    p_playlist->p_fetcher = vlc_object_create( p_playlist,
                              sizeof( playlist_fetcher_t ) );
    if( !p_playlist->p_fetcher )
99
100
101
102
103
    {
        msg_Err( p_playlist, "unable to create secondary preparser" );
        vlc_object_destroy( p_playlist );
        return;
    }
104
105
106
107
108
109
110
111
112
    p_playlist->p_fetcher->i_waiting = 0;
    p_playlist->p_fetcher->p_waiting = NULL;
    p_playlist->p_fetcher->i_art_policy = var_CreateGetInteger( p_playlist,
                                                                "album-art" );

    vlc_object_attach( p_playlist->p_fetcher, p_playlist );
    if( vlc_thread_create( p_playlist->p_fetcher,
                           "fetcher",
                           RunFetcher,
113
114
115
                           VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
    {
        msg_Err( p_playlist, "cannot spawn secondary preparse thread" );
116
117
        vlc_object_detach( p_playlist->p_fetcher );
        vlc_object_destroy( p_playlist->p_fetcher );
118
119
120
        return;
    }

121
122
123
124
125
126
    // Start the thread
    if( vlc_thread_create( p_playlist, "playlist", RunControlThread,
                           VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
    {
        msg_Err( p_playlist, "cannot spawn playlist thread" );
        vlc_object_destroy( p_playlist );
127
        return;
128
129
130
131
132
    }

    /* The object has been initialized, now attach it */
    vlc_object_attach( p_playlist, p_parent );

133
    return;
134
135
136
137
138
139
140
141
142
143
144
}

/**
 * Destroy the playlist global thread.
 *
 * Deinits all things controlled by the playlist global thread
 * \param p_playlist the playlist thread to destroy
 * \return VLC_SUCCESS or an error
 */
int playlist_ThreadDestroy( playlist_t * p_playlist )
{
145
    p_playlist->b_die = VLC_TRUE;
146
    playlist_Signal( p_playlist );
147
    if( p_playlist->p_preparse )
zorglub's avatar
zorglub committed
148
    {
149
        vlc_cond_signal( &p_playlist->p_preparse->object_wait );
zorglub's avatar
zorglub committed
150
151
        free( p_playlist->p_preparse->pp_waiting );
    }
152
    if( p_playlist->p_fetcher )
zorglub's avatar
zorglub committed
153
    {
154
155
        vlc_cond_signal( &p_playlist->p_fetcher->object_wait );
        free( p_playlist->p_fetcher->p_waiting );
zorglub's avatar
zorglub committed
156
    }
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177

    DestroyInteraction( p_playlist );
    DestroyPlaylist( p_playlist );

    return VLC_SUCCESS;
}

/**
 * Run the main control thread itself
 */
static void RunControlThread ( playlist_t *p_playlist )
{
   int i_loops = 0;

   /* Tell above that we're ready */
   vlc_thread_ready( p_playlist );

    while( !p_playlist->b_die )
    {
        i_loops++;

178
179
180
181
        if( p_playlist->p_interaction )
            intf_InteractionManage( p_playlist );

        playlist_MainLoop( p_playlist );
182
183
184
185
186
187
188
189
190
191
192
        if( p_playlist->b_cant_sleep )
        {
            /* 100 ms is an acceptable delay for playlist operations */
            msleep( INTF_IDLE_SLEEP*2 );
        }
        else
        {
            PL_LOCK;
            vlc_cond_wait( &p_playlist->object_wait, &p_playlist->object_lock );
            PL_UNLOCK;
        }
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
    }

    EndPlaylist( p_playlist );
}


/*****************************************************************************
 * Playlist-specific functions
 *****************************************************************************/
static playlist_t * CreatePlaylist( vlc_object_t *p_parent )
{
    return playlist_Create( p_parent );
}

static void DestroyPlaylist( playlist_t *p_playlist )
{
    playlist_Destroy( p_playlist );
}

static void EndPlaylist( playlist_t *p_playlist )
{
    playlist_LastLoop( p_playlist );
}

/*****************************************************************************
 * Preparse-specific functions
 *****************************************************************************/
static void RunPreparse ( playlist_preparse_t *p_obj )
{
    /* Tell above that we're ready */
    vlc_thread_ready( p_obj );
224
    playlist_PreparseLoop( p_obj );
225
226
}

227
static void RunFetcher( playlist_fetcher_t *p_obj )
228
229
230
{
    /* Tell above that we're ready */
    vlc_thread_ready( p_obj );
231
    playlist_FetcherLoop( p_obj );
232
233
234
235
236
237
238
239
240
241
}

/*****************************************************************************
 * Interaction functions
 *****************************************************************************/
static void DestroyInteraction( playlist_t *p_playlist )
{
    if( p_playlist->p_interaction )
    {
        intf_InteractionDestroy( p_playlist->p_interaction );
242
243
        fprintf( stderr, "NOW NULL ****\n" );
        p_playlist->p_interaction = NULL;
244
245
    }
}