input.c 101 KB
Newer Older
1
2
/*****************************************************************************
 * input.c: input thread
3
 *****************************************************************************
4
 * Copyright (C) 1998-2007 the VideoLAN team
5
 * $Id$
6
 *
7
 * Authors: Christophe Massiot <massiot@via.ecp.fr>
Laurent Aimar's avatar
Laurent Aimar committed
8
 *          Laurent Aimar <fenrir@via.ecp.fr>
9
10
11
12
13
 *
 * 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.
14
 *
15
16
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17
18
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
19
 *
20
21
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
dionoea's avatar
dionoea committed
22
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
24

25
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
26
 * Preamble
27
 *****************************************************************************/
28
29
30
31
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

32
#include <vlc_common.h>
Sam Hocevar's avatar
   
Sam Hocevar committed
33

34
#include <ctype.h>
Christophe Mutricy's avatar
Christophe Mutricy committed
35
#include <limits.h>
36
#include <assert.h>
37

Laurent Aimar's avatar
Laurent Aimar committed
38
#include "input_internal.h"
39

zorglub's avatar
zorglub committed
40
41
#include <vlc_sout.h>
#include "../stream_output/stream_output.h"
Sam Hocevar's avatar
   
Sam Hocevar committed
42

zorglub's avatar
zorglub committed
43
44
45
#include <vlc_interface.h>
#include <vlc_url.h>
#include <vlc_charset.h>
46
#include <vlc_strings.h>
47

48
49
50
51
#ifdef HAVE_SYS_STAT_H
#   include <sys/stat.h>
#endif

52
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
53
 * Local prototypes
54
 *****************************************************************************/
55
56
static void Destructor( input_thread_t * p_input );

ivoire's avatar
ivoire committed
57
58
static  void* Run            ( vlc_object_t *p_this );
static  void* RunAndDestroy  ( vlc_object_t *p_this );
Laurent Aimar's avatar
Laurent Aimar committed
59

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
60
static input_thread_t * Create  ( vlc_object_t *, input_item_t *,
61
                                  const char *, bool, sout_instance_t * );
62
static  int             Init    ( input_thread_t *p_input );
63
static void             WaitDie   ( input_thread_t *p_input );
64
65
static void             End     ( input_thread_t *p_input );
static void             MainLoop( input_thread_t *p_input );
Laurent Aimar's avatar
Laurent Aimar committed
66

67
static inline int ControlPopNoLock( input_thread_t *, int *, vlc_value_t *, mtime_t i_deadline );
Laurent Aimar's avatar
Laurent Aimar committed
68
static void       ControlReduce( input_thread_t * );
69
static bool Control( input_thread_t *, int, vlc_value_t );
70

71
72
static int  UpdateFromAccess( input_thread_t * );
static int  UpdateFromDemux( input_thread_t * );
Michel Kaempf's avatar
Michel Kaempf committed
73

74
static void UpdateItemLength( input_thread_t *, int64_t i_length );
75

76
static void MRLSections( input_thread_t *, char *, int *, int *, int *, int *);
77
78

static input_source_t *InputSourceNew( input_thread_t *);
Laurent Aimar's avatar
   
Laurent Aimar committed
79
static int  InputSourceInit( input_thread_t *, input_source_t *,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
80
                             const char *, const char *psz_forced_demux );
81
static void InputSourceClean( input_source_t * );
82
83
/* TODO */
//static void InputGetAttachments( input_thread_t *, input_source_t * );
84
85
static void SlaveDemux( input_thread_t *p_input );
static void SlaveSeek( input_thread_t *p_input );
86

87
88
static void InputMetaUser( input_thread_t *p_input, vlc_meta_t *p_meta );
static void InputUpdateMeta( input_thread_t *p_input, vlc_meta_t *p_meta );
89
90
static char *InputGetExtraFiles( input_thread_t *p_input,
                                 const char *psz_access, const char *psz_path );
91

92
static void DemuxMeta( input_thread_t *p_input, vlc_meta_t *p_meta, demux_t *p_demux );
93
static void AccessMeta( input_thread_t * p_input, vlc_meta_t *p_meta );
94
95
96
static void AppendAttachment( int *pi_attachment, input_attachment_t ***ppp_attachment,
                              int i_new, input_attachment_t **pp_new );

97
98
static void SubtitleAdd( input_thread_t *p_input, char *psz_subtitle, bool b_forced );

99
/*****************************************************************************
100
101
 * This function creates a new input, and returns a pointer
 * to its description. On error, it returns NULL.
Laurent Aimar's avatar
Laurent Aimar committed
102
103
104
105
106
107
108
109
110
111
 *
 * Variables for _public_ use:
 * * Get and Set:
 *  - state
 *  - rate,rate-slower, rate-faster
 *  - position, position-offset
 *  - time, time-offset
 *  - title,title-next,title-prev
 *  - chapter,chapter-next, chapter-prev
 *  - program, audio-es, video-es, spu-es
112
 *  - audio-delay, spu-delay
Laurent Aimar's avatar
Laurent Aimar committed
113
114
115
116
 *  - bookmark
 * * Get only:
 *  - length
 *  - bookmarks
117
118
 *  - seekable (if you can seek, it doesn't say if 'bar display' has be shown
 *    or not, for that check position != 0.0)
119
 *  - can-pause
120
 *  - can-record (if a stream can be recorded while playing)
121
 *  - teletext-es to get the index of spu track that is teletext --1 if no teletext)
122
 * * For intf callback upon changes:
Laurent Aimar's avatar
Laurent Aimar committed
123
 *  - intf-change
124
 *  - intf-change-vout for when a vout is created or destroyed
125
 *  - rate-change for when playback rate changes
Laurent Aimar's avatar
Laurent Aimar committed
126
127
 * TODO explain when Callback is called
 * TODO complete this list (?)
128
 *****************************************************************************/
129
static input_thread_t *Create( vlc_object_t *p_parent, input_item_t *p_item,
130
                               const char *psz_header, bool b_quick,
131
                               sout_instance_t *p_sout )
Michel Kaempf's avatar
Michel Kaempf committed
132
{
133
    static const char input_name[] = "input";
134
    input_thread_t *p_input = NULL;                 /* thread descriptor */
135
136
    vlc_value_t val;
    int i;
137

138
    /* Allocate descriptor */
139
140
    p_input = vlc_custom_create( p_parent, sizeof( *p_input ),
                                 VLC_OBJECT_INPUT, input_name );
141
    if( p_input == NULL )
142
        return NULL;
143
144
145
146
147
148

    /* Construct a nice name for the input timer */
    char psz_timer_name[255];
    char * psz_name = input_item_GetName( p_item );
    snprintf( psz_timer_name, sizeof(psz_timer_name),
              "input launching for '%s'", psz_name );
149
150
151

    msg_Dbg( p_input, "Creating an input for '%s'", psz_name);

152
153
154
155
156
157
158
    free( psz_name );

    /* Start a timer to mesure how long it takes
     * to launch an input */
    stats_TimerStart( p_input, psz_timer_name,
        STATS_TIMER_INPUT_LAUNCHING );

zorglub's avatar
zorglub committed
159
    MALLOC_NULL( p_input->p, input_thread_private_t );
Rafaël Carré's avatar
Rafaël Carré committed
160
    memset( p_input->p, 0, sizeof( input_thread_private_t ) );
161
162
163

    /* One "randomly" selected input thread is responsible for computing
     * the global stats. Check if there is already someone doing this */
164
    if( p_input->p_libvlc->p_stats && !b_quick )
165
    {
166
        libvlc_priv_t *p_private = libvlc_priv( p_input->p_libvlc );
167
        vlc_mutex_lock( &p_input->p_libvlc->p_stats->lock );
168
169
        if( p_private->p_stats_computer == NULL )
            p_private->p_stats_computer = p_input;
170
        vlc_mutex_unlock( &p_input->p_libvlc->p_stats->lock );
171
172
    }

173
    p_input->b_preparsing = b_quick;
174
    p_input->psz_header = psz_header ? strdup( psz_header ) : NULL;
175

176
    /* Init events */
177
178
179
    vlc_event_manager_t * p_em = &p_input->p->event_manager;
    vlc_event_manager_init_with_vlc_object( p_em, p_input );
    vlc_event_manager_register_event_type( p_em, vlc_InputStateChanged );
180
    vlc_event_manager_register_event_type( p_em, vlc_InputSelectedStreamChanged );
181

Laurent Aimar's avatar
Laurent Aimar committed
182
    /* Init Common fields */
183
184
    p_input->b_eof = false;
    p_input->b_can_pace_control = true;
zorglub's avatar
zorglub committed
185
    p_input->p->i_start = 0;
Laurent Aimar's avatar
Laurent Aimar committed
186
    p_input->i_time  = 0;
zorglub's avatar
zorglub committed
187
    p_input->p->i_stop  = 0;
188
    p_input->p->i_run  = 0;
zorglub's avatar
zorglub committed
189
190
191
    p_input->p->i_title = 0;
    p_input->p->title   = NULL;
    p_input->p->i_title_offset = p_input->p->i_seekpoint_offset = 0;
Laurent Aimar's avatar
Laurent Aimar committed
192
    p_input->i_state = INIT_S;
zorglub's avatar
zorglub committed
193
    p_input->p->i_rate  = INPUT_RATE_DEFAULT;
194
    p_input->p->b_recording = false;
195
196
    TAB_INIT( p_input->p->i_bookmark, p_input->p->bookmark );
    TAB_INIT( p_input->p->i_attachment, p_input->p->attachment );
zorglub's avatar
zorglub committed
197
198
    p_input->p->p_es_out = NULL;
    p_input->p->p_sout  = NULL;
199
    p_input->p->b_out_pace_control = false;
Laurent Aimar's avatar
Laurent Aimar committed
200
201
202
    p_input->i_pts_delay = 0;

    /* Init Input fields */
Pierre's avatar
Pierre committed
203
    vlc_gc_incref( p_item ); /* Released in Destructor() */
zorglub's avatar
zorglub committed
204
205
206
207
    p_input->p->input.p_item = p_item;
    p_input->p->input.p_access = NULL;
    p_input->p->input.p_stream = NULL;
    p_input->p->input.p_demux  = NULL;
208
    p_input->p->input.b_title_demux = false;
zorglub's avatar
zorglub committed
209
210
211
    p_input->p->input.i_title  = 0;
    p_input->p->input.title    = NULL;
    p_input->p->input.i_title_offset = p_input->p->input.i_seekpoint_offset = 0;
212
213
214
215
    p_input->p->input.b_can_pace_control = true;
    p_input->p->input.b_can_rate_control = true;
    p_input->p->input.b_rescale_ts = true;
    p_input->p->input.b_eof = false;
zorglub's avatar
zorglub committed
216
217
    p_input->p->input.i_cr_average = 0;

218
    vlc_mutex_lock( &p_item->lock );
219
220

    if( !p_item->p_stats )
221
222
        p_item->p_stats = stats_NewInputStats( p_input );
    vlc_mutex_unlock( &p_item->lock );
zorglub's avatar
zorglub committed
223

224
    /* No slave */
zorglub's avatar
zorglub committed
225
226
    p_input->p->i_slave = 0;
    p_input->p->slave   = NULL;
227

Laurent Aimar's avatar
Laurent Aimar committed
228
    /* Init control buffer */
229
    vlc_mutex_init( &p_input->p->lock_control );
230
    vlc_cond_init( &p_input->p->wait_control );
zorglub's avatar
zorglub committed
231
    p_input->p->i_control = 0;
232

gbazin's avatar
   
gbazin committed
233
    /* Parse input options */
234
    vlc_mutex_lock( &p_item->lock );
Pierre d'Herbemont's avatar
Pierre d'Herbemont committed
235
    assert( (int)p_item->optflagc == p_item->i_options );
236
    for( i = 0; i < p_item->i_options; i++ )
237
238
        var_OptionParse( VLC_OBJECT(p_input), p_item->ppsz_options[i],
                         !!(p_item->optflagv[i] & VLC_INPUT_OPTION_TRUSTED) );
239
    vlc_mutex_unlock( &p_item->lock );
gbazin's avatar
   
gbazin committed
240

Laurent Aimar's avatar
Laurent Aimar committed
241
242
    /* Create Object Variables for private use only */
    input_ConfigVarInit( p_input );
Michel Kaempf's avatar
Michel Kaempf committed
243

Laurent Aimar's avatar
Laurent Aimar committed
244
    /* Create Objects variables for public Get and Set */
245
    input_ControlVarInit( p_input );
246

247
    /* */
zorglub's avatar
zorglub committed
248
    p_input->p->input.i_cr_average = var_GetInteger( p_input, "cr-average" );
gbazin's avatar
gbazin committed
249

250
    if( !p_input->b_preparsing )
gbazin's avatar
gbazin committed
251
    {
252
253
        var_Get( p_input, "bookmarks", &val );
        if( val.psz_string )
gbazin's avatar
gbazin committed
254
        {
255
256
257
258
            /* FIXME: have a common cfg parsing routine used by sout and others */
            char *psz_parser, *psz_start, *psz_end;
            psz_parser = val.psz_string;
            while( (psz_start = strchr( psz_parser, '{' ) ) )
gbazin's avatar
gbazin committed
259
            {
260
261
262
263
264
265
266
267
268
269
270
271
272
273
                 seekpoint_t *p_seekpoint = vlc_seekpoint_New();
                 char backup;
                 psz_start++;
                 psz_end = strchr( psz_start, '}' );
                 if( !psz_end ) break;
                 psz_parser = psz_end + 1;
                 backup = *psz_parser;
                 *psz_parser = 0;
                 *psz_end = ',';
                 while( (psz_end = strchr( psz_start, ',' ) ) )
                 {
                     *psz_end = 0;
                     if( !strncmp( psz_start, "name=", 5 ) )
                     {
274
                         p_seekpoint->psz_name = strdup(psz_start + 5);
275
276
277
278
279
280
281
                     }
                     else if( !strncmp( psz_start, "bytes=", 6 ) )
                     {
                         p_seekpoint->i_byte_offset = atoll(psz_start + 6);
                     }
                     else if( !strncmp( psz_start, "time=", 5 ) )
                     {
zorglub's avatar
zorglub committed
282
283
                         p_seekpoint->i_time_offset = atoll(psz_start + 5) *
                                                        1000000;
284
285
                     }
                     psz_start = psz_end + 1;
gbazin's avatar
gbazin committed
286
                }
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
287
                msg_Dbg( p_input, "adding bookmark: %s, bytes=%"PRId64", time=%"PRId64,
288
289
290
291
292
                                  p_seekpoint->psz_name, p_seekpoint->i_byte_offset,
                                  p_seekpoint->i_time_offset );
                input_Control( p_input, INPUT_ADD_BOOKMARK, p_seekpoint );
                vlc_seekpoint_Delete( p_seekpoint );
                *psz_parser = backup;
gbazin's avatar
gbazin committed
293
            }
294
            free( val.psz_string );
gbazin's avatar
gbazin committed
295
296
297
        }
    }

298
    /* Remove 'Now playing' info as it is probably outdated */
299
    input_item_SetNowPlaying( p_item, NULL );
300

301
302
303
304
    /* */
    if( p_input->b_preparsing )
        p_input->i_flags |= OBJECT_FLAGS_QUIET | OBJECT_FLAGS_NOINTERACT;

305
306
307
308
    /* */
    if( p_sout )
        p_input->p->p_sout = p_sout;

309
    memset( &p_input->p->counters, 0, sizeof( p_input->p->counters ) );
310
    vlc_mutex_init( &p_input->p->counters.counters_lock );
311

312
313
314
    /* Set the destructor when we are sure we are initialized */
    vlc_object_set_destructor( p_input, (vlc_destructor_t)Destructor );

315
316
317
    /* Attach only once we are ready */
    vlc_object_attach( p_input, p_parent );

318
319
320
    return p_input;
}

321
322
323
324
/**
 * Input destructor (called when the object's refcount reaches 0).
 */
static void Destructor( input_thread_t * p_input )
325
{
326
327
328
329
330
331
#ifndef NDEBUG
    char * psz_name = input_item_GetName( p_input->p->input.p_item );
    msg_Dbg( p_input, "Destroying the input for '%s'", psz_name);
    free( psz_name );
#endif

332
333
    vlc_event_manager_fini( &p_input->p->event_manager );

334
335
    stats_TimerDump( p_input, STATS_TIMER_INPUT_LAUNCHING );
    stats_TimerClean( p_input, STATS_TIMER_INPUT_LAUNCHING );
336
#ifdef ENABLE_SOUT
337
338
    if( p_input->p->p_sout )
        sout_DeleteInstance( p_input->p->p_sout );
339
#endif
Pierre's avatar
Pierre committed
340
341
    vlc_gc_decref( p_input->p->input.p_item );

342
343
    vlc_mutex_destroy( &p_input->p->counters.counters_lock );

344
    vlc_cond_destroy( &p_input->p->wait_control );
345
346
    vlc_mutex_destroy( &p_input->p->lock_control );
    free( p_input->p );
347
}
348

349
/**
350
351
 * Initialize an input thread and run it. You will need to monitor the
 * thread to clean up after it is done
352
353
354
355
356
357
358
 *
 * \param p_parent a vlc_object
 * \param p_item an input item
 * \return a pointer to the spawned input thread
 */
input_thread_t *__input_CreateThread( vlc_object_t *p_parent,
                                      input_item_t *p_item )
359
{
360
    return __input_CreateThreadExtended( p_parent, p_item, NULL, NULL );
361
362
}

363
364
365
366
/* */
input_thread_t *__input_CreateThreadExtended( vlc_object_t *p_parent,
                                              input_item_t *p_item,
                                              const char *psz_log, sout_instance_t *p_sout )
367
{
368
    input_thread_t *p_input;
369

370
    p_input = Create( p_parent, p_item, psz_log, false, p_sout );
371
372
373
    if( !p_input )
        return NULL;

Sam Hocevar's avatar
Sam Hocevar committed
374
    /* Create thread and wait for its readiness. */
Laurent Aimar's avatar
Laurent Aimar committed
375
    if( vlc_thread_create( p_input, "input", Run,
376
                           VLC_THREAD_PRIORITY_INPUT, false ) )
Michel Kaempf's avatar
Michel Kaempf committed
377
    {
378
        input_ChangeState( p_input, ERROR_S );
379
        msg_Err( p_input, "cannot create input thread" );
380
381
        vlc_object_detach( p_input );
        vlc_object_release( p_input );
382
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
383
    }
384

385
    return p_input;
Michel Kaempf's avatar
Michel Kaempf committed
386
387
}

388
/**
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
389
 * Initialize an input thread and run it. This thread will clean after itself,
390
391
392
393
394
 * you can forget about it. It can work either in blocking or non-blocking mode
 *
 * \param p_parent a vlc_object
 * \param p_item an input item
 * \param b_block should we block until read is finished ?
395
 * \return an error code, VLC_SUCCESS on success
396
 */
397
int __input_Read( vlc_object_t *p_parent, input_item_t *p_item,
398
                   bool b_block )
399
{
400
    input_thread_t *p_input;
401

402
    p_input = Create( p_parent, p_item, NULL, false, NULL );
403
    if( !p_input )
404
405
        return VLC_EGENERIC;

406
    if( b_block )
407
    {
ivoire's avatar
ivoire committed
408
        RunAndDestroy( VLC_OBJECT(p_input) );
zorglub's avatar
zorglub committed
409
        return VLC_SUCCESS;
410
    }
411
    else
412
    {
413
        if( vlc_thread_create( p_input, "input", RunAndDestroy,
414
                               VLC_THREAD_PRIORITY_INPUT, false ) )
415
        {
416
            input_ChangeState( p_input, ERROR_S );
417
            msg_Err( p_input, "cannot create input thread" );
418
            vlc_object_release( p_input );
zorglub's avatar
zorglub committed
419
            return VLC_EGENERIC;
420
        }
421
    }
422
    return VLC_SUCCESS;
423
}
424

425
426
427
428
429
430
431
432
433
434
/**
 * Initialize an input and initialize it to preparse the item
 * This function is blocking. It will only accept to parse files
 *
 * \param p_parent a vlc_object_t
 * \param p_item an input item
 * \return VLC_SUCCESS or an error
 */
int __input_Preparse( vlc_object_t *p_parent, input_item_t *p_item )
{
435
    input_thread_t *p_input;
436

437
    /* Allocate descriptor */
438
    p_input = Create( p_parent, p_item, NULL, true, NULL );
439
440
441
    if( !p_input )
        return VLC_EGENERIC;

442
443
    if( !Init( p_input ) )
        End( p_input );
444

445
446
    vlc_object_detach( p_input );
    vlc_object_release( p_input );
447
448
449
450

    return VLC_SUCCESS;
}

451
452
453
454
455
/**
 * Request a running input thread to stop and die
 *
 * \param the input thread to stop
 */
456
static void ObjectKillChildrens( input_thread_t *p_input, vlc_object_t *p_obj )
Michel Kaempf's avatar
Michel Kaempf committed
457
{
Laurent Aimar's avatar
Laurent Aimar committed
458
459
    vlc_list_t *p_list;
    int i;
460
461
462
463
464
465

    if( p_obj->i_object_type == VLC_OBJECT_VOUT ||
        p_obj->i_object_type == VLC_OBJECT_AOUT ||
        p_obj == VLC_OBJECT(p_input->p->p_sout) )
        return;

466
    vlc_object_kill( p_obj );
467

468
    p_list = vlc_list_children( p_obj );
Laurent Aimar's avatar
Laurent Aimar committed
469
    for( i = 0; i < p_list->i_count; i++ )
470
        ObjectKillChildrens( p_input, p_list->p_values[i].p_object );
Laurent Aimar's avatar
Laurent Aimar committed
471
    vlc_list_release( p_list );
472
473
474
475
476
477
}
void input_StopThread( input_thread_t *p_input )
{
    /* Set die for input and ALL of this childrens (even (grand-)grand-childrens)
     * It is needed here even if it is done in INPUT_CONTROL_SET_DIE handler to
     * unlock the control loop */
478
    ObjectKillChildrens( p_input, VLC_OBJECT(p_input) );
Michel Kaempf's avatar
Michel Kaempf committed
479

Laurent Aimar's avatar
Laurent Aimar committed
480
    input_ControlPush( p_input, INPUT_CONTROL_SET_DIE, NULL );
Sam Hocevar's avatar
   
Sam Hocevar committed
481
482
}

483
484
sout_instance_t * input_DetachSout( input_thread_t *p_input )
{
485
486
487
488
    sout_instance_t *p_sout = p_input->p->p_sout;
    vlc_object_detach( p_sout );
    p_input->p->p_sout = NULL;
    return p_sout;
489
490
}

491
/*****************************************************************************
Laurent Aimar's avatar
Laurent Aimar committed
492
 * Run: main thread loop
493
494
 * This is the "normal" thread that spawns the input processing chain,
 * reads the stream, cleans up and waits
495
 *****************************************************************************/
ivoire's avatar
ivoire committed
496
static void* Run( vlc_object_t *p_this )
Michel Kaempf's avatar
Michel Kaempf committed
497
{
ivoire's avatar
ivoire committed
498
    input_thread_t *p_input = (input_thread_t *)p_this;
499
    const int canc = vlc_savecancel();
500

501
    if( Init( p_input ) )
Sam Hocevar's avatar
   
Sam Hocevar committed
502
503
    {
        /* If we failed, wait before we are killed, and exit */
504
        WaitDie( p_input );
505
        goto exit;
Sam Hocevar's avatar
   
Sam Hocevar committed
506
    }
Michel Kaempf's avatar
Michel Kaempf committed
507

508
509
    MainLoop( p_input );

510
    /* Wait until we are asked to die */
511
    if( !p_input->b_die )
512
        WaitDie( p_input );
513
514
515

    /* Clean up */
    End( p_input );
516
517
518

exit:
    p_input->b_dead = true;
519
    vlc_restorecancel( canc );
ivoire's avatar
ivoire committed
520
    return NULL;
521
522
523
}

/*****************************************************************************
524
 * RunAndDestroy: main thread loop
525
526
527
 * This is the "just forget me" thread that spawns the input processing chain,
 * reads the stream, cleans up and releases memory
 *****************************************************************************/
ivoire's avatar
ivoire committed
528
static void* RunAndDestroy( vlc_object_t *p_this )
529
{
ivoire's avatar
ivoire committed
530
    input_thread_t *p_input = (input_thread_t *)p_this;
531
    const int canc = vlc_savecancel();
532

533
    if( Init( p_input ) )
534
        goto exit;
535
536
537
538
539
540

    MainLoop( p_input );

    /* Clean up */
    End( p_input );

541
exit:
542
    /* Release memory */
543
    vlc_object_release( p_input );
544
545
    vlc_restorecancel( canc );
    return NULL;
546
547
548
549
550
}

/*****************************************************************************
 * Main loop: Fill buffers from access, and demux
 *****************************************************************************/
551
552
553
554
555
556

/**
 * MainLoopDemux
 * It asks the demuxer to demux some data
 */
static void MainLoopDemux( input_thread_t *p_input, bool *pb_changed, mtime_t *pi_start_mdate )
557
{
558
    int i_ret;
559

560
    *pb_changed = false;
561

562
563
564
565
566
567
568
    if( ( p_input->p->i_stop > 0 && p_input->i_time >= p_input->p->i_stop ) ||
        ( p_input->p->i_run > 0 && *pi_start_mdate+p_input->p->i_run < mdate() ) )
        i_ret = 0; /* EOF */
    else
        i_ret = p_input->p->input.p_demux->pf_demux(p_input->p->input.p_demux);

    if( i_ret > 0 )
Sam Hocevar's avatar
   
Sam Hocevar committed
569
    {
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
        /* TODO */
        if( p_input->p->input.b_title_demux &&
            p_input->p->input.p_demux->info.i_update )
        {
            i_ret = UpdateFromDemux( p_input );
            *pb_changed = true;
        }
        else if( !p_input->p->input.b_title_demux &&
                  p_input->p->input.p_access &&
                  p_input->p->input.p_access->info.i_update )
        {
            i_ret = UpdateFromAccess( p_input );
            *pb_changed = true;
        }
    }
585

586
587
588
589
590
591
    if( i_ret == 0 )    /* EOF */
    {
        vlc_value_t repeat;

        var_Get( p_input, "input-repeat", &repeat );
        if( repeat.i_int == 0 )
592
        {
593
594
595
596
597
598
599
600
            /* End of file - we do not set b_die because only the
             * playlist is allowed to do so. */
            msg_Dbg( p_input, "EOF reached" );
            p_input->p->input.b_eof = true;
        }
        else
        {
            vlc_value_t val;
601

602
603
604
            msg_Dbg( p_input, "repeating the same input (%d)",
                     repeat.i_int );
            if( repeat.i_int > 0 )
Laurent Aimar's avatar
Laurent Aimar committed
605
            {
606
607
                repeat.i_int--;
                var_Set( p_input, "input-repeat", repeat );
Laurent Aimar's avatar
Laurent Aimar committed
608
            }
609

610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
            /* Seek to start title/seekpoint */
            val.i_int = p_input->p->input.i_title_start -
                p_input->p->input.i_title_offset;
            if( val.i_int < 0 || val.i_int >= p_input->p->input.i_title )
                val.i_int = 0;
            input_ControlPush( p_input,
                               INPUT_CONTROL_SET_TITLE, &val );

            val.i_int = p_input->p->input.i_seekpoint_start -
                p_input->p->input.i_seekpoint_offset;
            if( val.i_int > 0 /* TODO: check upper boundary */ )
                input_ControlPush( p_input,
                                   INPUT_CONTROL_SET_SEEKPOINT, &val );

            /* Seek to start position */
            if( p_input->p->i_start > 0 )
Laurent Aimar's avatar
Laurent Aimar committed
626
            {
627
628
629
                val.i_time = p_input->p->i_start;
                input_ControlPush( p_input, INPUT_CONTROL_SET_TIME,
                                   &val );
630
            }
631
            else
Laurent Aimar's avatar
Laurent Aimar committed
632
            {
633
634
635
                val.f_float = 0.0;
                input_ControlPush( p_input, INPUT_CONTROL_SET_POSITION,
                                   &val );
Laurent Aimar's avatar
Laurent Aimar committed
636
            }
637

638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
            /* */
            *pi_start_mdate = mdate();
        }
    }
    else if( i_ret < 0 )
    {
        input_ChangeState( p_input, ERROR_S );
    }

    if( i_ret > 0 && p_input->p->i_slave > 0 )
    {
        SlaveDemux( p_input );
    }
}

/**
 * MainLoopInterface
 * It update the variables used by the interfaces
 */
static void MainLoopInterface( input_thread_t *p_input )
{
    vlc_value_t val;
    double f_pos;
    int64_t i_time, i_length;

    /* update input status variables */
    if( !demux_Control( p_input->p->input.p_demux,
                         DEMUX_GET_POSITION, &f_pos ) )
    {
        val.f_float = (float)f_pos;
        var_Change( p_input, "position", VLC_VAR_SETVALUE, &val, NULL );
    }
    if( !demux_Control( p_input->p->input.p_demux,
                         DEMUX_GET_TIME, &i_time ) )
    {
        p_input->i_time = i_time;
        val.i_time = i_time;
        var_Change( p_input, "time", VLC_VAR_SETVALUE, &val, NULL );
    }
    if( !demux_Control( p_input->p->input.p_demux,
                         DEMUX_GET_LENGTH, &i_length ) )
    {
        vlc_value_t old_val;
        var_Get( p_input, "length", &old_val );
        val.i_time = i_length;
        var_Change( p_input, "length", VLC_VAR_SETVALUE, &val, NULL );

        if( old_val.i_time != val.i_time )
        {
            UpdateItemLength( p_input, i_length );
        }
    }

    var_SetBool( p_input, "intf-change", true );
}

/**
 * MainLoopStatistic
 * It updates the globals statics
 */
static void MainLoopStatistic( input_thread_t *p_input )
{
    stats_ComputeInputStats( p_input, p_input->p->input.p_item->p_stats );
    /* Are we the thread responsible for computing global stats ? */
    if( libvlc_priv( p_input->p_libvlc )->p_stats_computer == p_input )
    {
        stats_ComputeGlobalStats( p_input->p_libvlc,
                                  p_input->p_libvlc->p_stats );
    }
}

/**
 * MainLoop
 * The main input loop.
 */
static void MainLoop( input_thread_t *p_input )
{
    mtime_t i_start_mdate = mdate();
716
717
    mtime_t i_intf_update = 0;
    mtime_t i_statistic_update = 0;
718
719
720
721
722
723
724
725
726

    /* Start the timer */
    stats_TimerStop( p_input, STATS_TIMER_INPUT_LAUNCHING );

    while( !p_input->b_die && !p_input->b_error && !p_input->p->input.b_eof )
    {
        bool b_force_update;
        int i_type;
        vlc_value_t val;
727
        mtime_t i_current;
728
        mtime_t i_deadline;
729
        mtime_t i_wakeup;
730

731
732
        /* Demux data */
        b_force_update = false;
733
        i_wakeup = 0;
734
        if( p_input->i_state != PAUSE_S )
735
        {
736
            MainLoopDemux( p_input, &b_force_update, &i_start_mdate );
737
738
            i_wakeup = input_EsOutGetWakeup( p_input->p->p_es_out );
        }
739
740

        /* */
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
        do {
            i_deadline = i_wakeup;
            if( p_input->i_state == PAUSE_S )
                i_deadline = __MIN( i_intf_update, i_statistic_update );

            /* Handle control */
            vlc_mutex_lock( &p_input->p->lock_control );
            ControlReduce( p_input );
            while( !ControlPopNoLock( p_input, &i_type, &val, i_deadline ) )
            {
                msg_Dbg( p_input, "control type=%d", i_type );
                if( Control( p_input, i_type, val ) )
                    b_force_update = true;
            }
            vlc_mutex_unlock( &p_input->p->lock_control );
756

757
758
759
760
761
762
763
764
765
766
767
768
769
            /* Update interface and statistics */
            i_current = mdate();
            if( i_intf_update < i_current || b_force_update )
            {
                MainLoopInterface( p_input );
                i_intf_update = i_current + INT64_C(250000);
                b_force_update = false;
            }
            if( i_statistic_update < i_current )
            {
                MainLoopStatistic( p_input );
                i_statistic_update = i_current + INT64_C(1000000);
            }
770
771
772
773
774
775
776
777

            /* Check if i_wakeup is still valid */
            if( i_wakeup != 0 )
            {
                mtime_t i_new_wakeup = input_EsOutGetWakeup( p_input->p->p_es_out );
                if( !i_new_wakeup )
                    i_wakeup = 0;
            }
778
        } while( i_current < i_wakeup );
Laurent Aimar's avatar
Laurent Aimar committed
779
    }
780
781
782
783

    if( !p_input->b_eof && !p_input->b_error && p_input->p->input.b_eof )
    {
        /* We have finish to demux data but not to play them */
784
        while( vlc_object_alive( p_input ) )
785
786
787
788
789
790
791
792
793
794
795
796
        {
            if( input_EsOutDecodersEmpty( p_input->p->p_es_out ) )
                break;

            msg_Dbg( p_input, "waiting decoder fifos to empty" );

            msleep( INPUT_IDLE_SLEEP );
        }

        /* We have finished */
        input_ChangeState( p_input, END_S );
    }
797
798
}

799
static void InitStatistics( input_thread_t * p_input )
Michel Kaempf's avatar
Michel Kaempf committed
800
{
801
    if( p_input->b_preparsing ) return;
802

803
804
805
    /* Prepare statistics */
#define INIT_COUNTER( c, type, compute ) p_input->p->counters.p_##c = \
 stats_CounterCreate( p_input, VLC_VAR_##type, STATS_##compute);
806
    if( libvlc_stats( p_input ) )
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
    {
        INIT_COUNTER( read_bytes, INTEGER, COUNTER );
        INIT_COUNTER( read_packets, INTEGER, COUNTER );
        INIT_COUNTER( demux_read, INTEGER, COUNTER );
        INIT_COUNTER( input_bitrate, FLOAT, DERIVATIVE );
        INIT_COUNTER( demux_bitrate, FLOAT, DERIVATIVE );
        INIT_COUNTER( played_abuffers, INTEGER, COUNTER );
        INIT_COUNTER( lost_abuffers, INTEGER, COUNTER );
        INIT_COUNTER( displayed_pictures, INTEGER, COUNTER );
        INIT_COUNTER( lost_pictures, INTEGER, COUNTER );
        INIT_COUNTER( decoded_audio, INTEGER, COUNTER );
        INIT_COUNTER( decoded_video, INTEGER, COUNTER );
        INIT_COUNTER( decoded_sub, INTEGER, COUNTER );
        p_input->p->counters.p_sout_send_bitrate = NULL;
        p_input->p->counters.p_sout_sent_packets = NULL;
        p_input->p->counters.p_sout_sent_bytes = NULL;
        if( p_input->p->counters.p_demux_bitrate )
            p_input->p->counters.p_demux_bitrate->update_interval = 1000000;
        if( p_input->p->counters.p_input_bitrate )
            p_input->p->counters.p_input_bitrate->update_interval = 1000000;
827
    }
828
}
829

830
#ifdef ENABLE_SOUT
831
832
833
834
835
836
837
838
839
static int InitSout( input_thread_t * p_input )
{
    char *psz;

    if( p_input->b_preparsing ) return VLC_SUCCESS;

    /* Find a usable sout and attach it to p_input */
    psz = var_GetNonEmptyString( p_input, "sout" );
    if( psz && strncasecmp( p_input->p->input.p_item->psz_uri, "vlc:", 4 ) )
840
    {
841
842
        /* Check the validity of the provided sout */
        if( p_input->p->p_sout )
zorglub's avatar
zorglub committed
843
        {
844
            if( strcmp( p_input->p->p_sout->psz_sout, psz ) )
845
            {
846
                msg_Dbg( p_input, "destroying unusable sout" );
847

848
849
                sout_DeleteInstance( p_input->p->p_sout );
                p_input->p->p_sout = NULL;
850
            }
851
        }
852

853
854
855
856
857
858
859
860
861
862
863
864
865
        if( p_input->p->p_sout )
        {
            /* Reuse it */
            msg_Dbg( p_input, "sout keep: reusing sout" );
            msg_Dbg( p_input, "sout keep: you probably want to use "
                              "gather stream_out" );
            vlc_object_attach( p_input->p->p_sout, p_input );
        }
        else
        {
            /* Create a new one */
            p_input->p->p_sout = sout_NewInstance( p_input, psz );
            if( !p_input->p->p_sout )
zorglub's avatar
zorglub committed
866
            {
867
868
869
870
871
                input_ChangeState( p_input, ERROR_S );
                msg_Err( p_input, "cannot start stream output instance, " \
                                  "aborting" );
                free( psz );
                return VLC_EGENERIC;
zorglub's avatar
zorglub committed
872
            }
873
        }
874
        if( libvlc_stats( p_input ) )
875
        {
876
            INIT_COUNTER( sout_sent_packets, INTEGER, COUNTER );
877
            INIT_COUNTER( sout_sent_bytes, INTEGER, COUNTER );
878
879
880
881
            INIT_COUNTER( sout_send_bitrate, FLOAT, DERIVATIVE );
            if( p_input->p->counters.p_sout_send_bitrate )
                 p_input->p->counters.p_sout_send_bitrate->update_interval =
                         1000000;
882
        }
883
    }
884
    else if( p_input->p->p_sout )
885
    {
886
887
888
889
        msg_Dbg( p_input, "destroying useless sout" );

        sout_DeleteInstance( p_input->p->p_sout );
        p_input->p->p_sout = NULL;
Laurent Aimar's avatar
Laurent Aimar committed
890
    }
891
    free( psz );
892

893
894
    return VLC_SUCCESS;
}
895
#endif
896

897
898
899
static void InitTitle( input_thread_t * p_input )
{
    vlc_value_t val;
Laurent Aimar's avatar
Laurent Aimar committed
900

901
    if( p_input->b_preparsing ) return;
902

903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
    /* Create global title (from master) */
    p_input->p->i_title = p_input->p->input.i_title;
    p_input->p->title   = p_input->p->input.title;
    p_input->p->i_title_offset = p_input->p->input.i_title_offset;
    p_input->p->i_seekpoint_offset = p_input->p->input.i_seekpoint_offset;
    if( p_input->p->i_title > 0 )
    {
        /* Setup variables */
        input_ControlVarNavigation( p_input );
        input_ControlVarTitle( p_input, 0 );
    }

    /* Global flag */
    p_input->b_can_pace_control = p_input->p->input.b_can_pace_control;
    p_input->p->b_can_pause        = p_input->p->input.b_can_pause;
    p_input->p->b_can_rate_control = p_input->p->input.b_can_rate_control;

    /* Fix pts delay */
    if( p_input->i_pts_delay < 0 )
        p_input->i_pts_delay = 0;

    /* If the desynchronisation requested by the user is < 0, we need to
     * cache more data. */
    var_Get( p_input, "audio-desync", &val );
927
928
    if( val.i_int < 0 )
        p_input->i_pts_delay -= (val.i_int * 1000);
929
930
931
932
933
934

    /* Update cr_average depending on the caching */
    p_input->p->input.i_cr_average *= (10 * p_input->i_pts_delay / 200000);
    p_input->p->input.i_cr_average /= 10;
    if( p_input->p->input.i_cr_average < 10 ) p_input->p->input.i_cr_average = 10;
}
gbazin's avatar
   
gbazin committed
935

936
937
938
939
static void StartTitle( input_thread_t * p_input )
{
    double f_fps;
    vlc_value_t val;
940
    int i_delay;
941
942
    char *psz;
    char *psz_subtitle;
943
    int64_t i_length;
944

945
946
947
    /* Start title/chapter */

    if( p_input->b_preparsing )
Laurent Aimar's avatar
Laurent Aimar committed
948
    {
949
950
        p_input->p->i_start = 0;
        return;
Laurent Aimar's avatar
Laurent Aimar committed
951
    }
952
953
954
955
956
957
958
959
960
961
962
963

    val.i_int = p_input->p->input.i_title_start -
                p_input->p->input.i_title_offset;
    if( val.i_int > 0 && val.i_int < p_input->p->input.i_title )
        input_ControlPush( p_input, INPUT_CONTROL_SET_TITLE, &val );
    val.i_int = p_input->p->input.i_seekpoint_start -
                p_input->p->input.i_seekpoint_offset;
    if( val.i_int > 0 /* TODO: check upper boundary */ )
        input_ControlPush( p_input, INPUT_CONTROL_SET_SEEKPOINT, &val );

    /* Start time*/
    /* Set start time */
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
964
965
966
    p_input->p->i_start = INT64_C(1000000) * var_GetInteger( p_input, "start-time" );
    p_input->p->i_stop  = INT64_C(1000000) * var_GetInteger( p_input, "stop-time" );
    p_input->p->i_run   = INT64_C(1000000) * var_GetInteger( p_input, "run-time" );
967
    i_length = var_GetTime( p_input, "length" );
968
    if( p_input->p->i_run < 0 )
969
    {
970
971
        msg_Warn( p_input, "invalid run-time ignored" );
        p_input->p->i_run = 0;
Rafaël Carré's avatar
Rafaël Carré committed
972
    }
973

974
    if( p_input->p->i_start > 0 )
Laurent Aimar's avatar
Laurent Aimar committed
975
    {
976
        if( p_input->p->i_start >= i_length )
977
        {
978
            msg_Warn( p_input, "invalid start-time ignored" );
979
        }
980
        else