thread.c 8.5 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
59
60

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 HandleStats( playlist_t *, int );

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
 */
61
void __playlist_ThreadCreate( vlc_object_t *p_parent )
62
63
64
65
{
    playlist_t *p_playlist;
    p_playlist = CreatePlaylist( p_parent );

66
    if( !p_playlist ) return;
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81

    // Stats
    p_playlist->p_stats = (global_stats_t *)malloc( sizeof( global_stats_t ) );
    vlc_mutex_init( p_playlist, &p_playlist->p_stats->lock );

    // 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 );
82
        return;
83
84
85
86
87
88
89
90
91
92
93
    }
    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 );
94
        return;
95
96
    }

97
98
    // Secondary Preparse
    p_playlist->p_secondary_preparse = vlc_object_create( p_playlist,
dionoea's avatar
dionoea committed
99
                              sizeof( playlist_secondary_preparse_t ) );
100
101
102
103
104
105
106
    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
107
    p_playlist->p_secondary_preparse->p_waiting = NULL;
108
109
110
111
112
113
114
115
116
117
118
119
120

    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;
    }

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
146
147
148
149
    p_playlist->b_die = VLC_TRUE;
    if( p_playlist->p_preparse )
        vlc_cond_signal( &p_playlist->p_preparse->object_wait );
    if( p_playlist->p_secondary_preparse )
        vlc_cond_signal( &p_playlist->p_secondary_preparse->object_wait );
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

    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 );
        HandleStats( p_playlist, i_loops );
        HandlePlaylist( p_playlist );

zorglub's avatar
zorglub committed
175
176
        /* 100 ms is an acceptable delay for playlist operations */
        msleep( INTF_IDLE_SLEEP*2 );
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
    }

    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 )
{
211
    playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
212
213
214
    /* Tell above that we're ready */
    vlc_thread_ready( p_obj );

215
    playlist_PreparseLoop( p_obj );
216
217
}

dionoea's avatar
dionoea committed
218
static void RunSecondaryPreparse( playlist_secondary_preparse_t *p_obj )
219
220
221
222
223
{
    playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
    /* Tell above that we're ready */
    vlc_thread_ready( p_obj );

224
    playlist_SecondaryPreparseLoop( p_obj );
225
226
227
228
229
230
231
232
233
234
}

/*****************************************************************************
 * Interaction functions
 *****************************************************************************/
static void DestroyInteraction( playlist_t *p_playlist )
{
    if( p_playlist->p_interaction )
    {
        intf_InteractionDestroy( p_playlist->p_interaction );
235
236
        fprintf( stderr, "NOW NULL ****\n" );
        p_playlist->p_interaction = NULL;
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
    }
}

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 );
    }
}


/*****************************************************************************
 * Stats functions
 *****************************************************************************/
static void HandleStats( playlist_t *p_playlist, int i_loops )
{
zorglub's avatar
zorglub committed
257
    if( i_loops % 5 == 0 && p_playlist->p_stats )
258
259
260
261
262
263
264
265
266
    {
        stats_ComputeGlobalStats( p_playlist, p_playlist->p_stats );
        if( p_playlist->p_input )
        {
            stats_ComputeInputStats( p_playlist->p_input,
                                p_playlist->p_input->input.p_item->p_stats );
        }
    }
}