thread.c 8.16 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
27
28
#include <vlc_input.h>
#include "vlc_playlist.h"
#include "vlc_interaction.h"
29
#include "playlist_internal.h"
30
31
32
33
34
35

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static void RunControlThread ( playlist_t * );
static void RunPreparse( playlist_preparse_t * );
dionoea's avatar
dionoea committed
36
static void RunSecondaryPreparse( playlist_secondary_preparse_t * );
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58

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

static void HandleInteraction( 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
 */
59
void __playlist_ThreadCreate( vlc_object_t *p_parent )
60
61
62
63
{
    playlist_t *p_playlist;
    p_playlist = CreatePlaylist( p_parent );

64
    if( !p_playlist ) return;
65
66
67
68

    // Stats
    p_playlist->p_stats = (global_stats_t *)malloc( sizeof( global_stats_t ) );
    vlc_mutex_init( p_playlist, &p_playlist->p_stats->lock );
69
    p_playlist->p_stats_computer = NULL;
70
71
72
73
74
75
76
77
78
79
80

    // 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 );
81
        return;
82
83
84
85
86
87
88
89
90
91
92
    }
    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 );
93
        return;
94
95
    }

96
97
    // Secondary Preparse
    p_playlist->p_secondary_preparse = vlc_object_create( p_playlist,
dionoea's avatar
dionoea committed
98
                              sizeof( playlist_secondary_preparse_t ) );
99
100
101
102
103
104
105
    if( !p_playlist->p_secondary_preparse )
    {
        msg_Err( p_playlist, "unable to create secondary preparser" );
        vlc_object_destroy( p_playlist );
        return;
    }
    p_playlist->p_secondary_preparse->i_waiting = 0;
dionoea's avatar
dionoea committed
106
    p_playlist->p_secondary_preparse->p_waiting = NULL;
107
108
109
110
111
112
113
114
115
116
117
118
119

    vlc_object_attach( p_playlist->p_secondary_preparse, p_playlist );
    if( vlc_thread_create( p_playlist->p_secondary_preparse,
                           "secondary preparser",
                           RunSecondaryPreparse,
                           VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
    {
        msg_Err( p_playlist, "cannot spawn secondary preparse thread" );
        vlc_object_detach( p_playlist->p_secondary_preparse );
        vlc_object_destroy( p_playlist->p_secondary_preparse );
        return;
    }

120
121
122
123
124
125
    // 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 );
126
        return;
127
128
129
130
131
    }

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

132
    return;
133
134
135
136
137
138
139
140
141
142
143
}

/**
 * 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 )
{
144
    p_playlist->b_die = VLC_TRUE;
145
    playlist_Signal( p_playlist );
146
    if( p_playlist->p_preparse )
zorglub's avatar
zorglub committed
147
    {
148
        vlc_cond_signal( &p_playlist->p_preparse->object_wait );
zorglub's avatar
zorglub committed
149
150
        free( p_playlist->p_preparse->pp_waiting );
    }
151
    if( p_playlist->p_secondary_preparse )
zorglub's avatar
zorglub committed
152
    {
153
        vlc_cond_signal( &p_playlist->p_secondary_preparse->object_wait );
zorglub's avatar
zorglub committed
154
155
        free( p_playlist->p_secondary_preparse->p_waiting );
    }
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178

    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++;

        HandleInteraction( p_playlist );
        HandlePlaylist( p_playlist );
179
180
181
182
183
184
185
186
187
188
189
        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;
        }
190
191
192
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
224
225
    }

    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 HandlePlaylist( playlist_t *p_playlist )
{
    playlist_MainLoop( 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 );
226
    playlist_PreparseLoop( p_obj );
227
228
}

dionoea's avatar
dionoea committed
229
static void RunSecondaryPreparse( playlist_secondary_preparse_t *p_obj )
230
231
232
{
    /* Tell above that we're ready */
    vlc_thread_ready( p_obj );
233
    playlist_SecondaryPreparseLoop( p_obj );
234
235
236
237
238
239
240
241
242
243
}

/*****************************************************************************
 * Interaction functions
 *****************************************************************************/
static void DestroyInteraction( playlist_t *p_playlist )
{
    if( p_playlist->p_interaction )
    {
        intf_InteractionDestroy( p_playlist->p_interaction );
244
245
        fprintf( stderr, "NOW NULL ****\n" );
        p_playlist->p_interaction = NULL;
246
247
248
249
250
251
252
253
254
255
256
257
258
    }
}

static void HandleInteraction( playlist_t *p_playlist )
{
    if( p_playlist->p_interaction )
    {
        stats_TimerStart( p_playlist, "Interaction thread",
                          STATS_TIMER_INTERACTION );
        intf_InteractionManage( p_playlist );
        stats_TimerStop( p_playlist, STATS_TIMER_INTERACTION );
    }
}