input.c 104 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
#include "es_out.h"
40
#include "es_out_timeshift.h"
41
#include "access.h"
42
#include "demux.h"
43
#include "stream.h"
44

zorglub's avatar
zorglub committed
45
46
#include <vlc_sout.h>
#include "../stream_output/stream_output.h"
Sam Hocevar's avatar
   
Sam Hocevar committed
47

zorglub's avatar
zorglub committed
48
49
50
#include <vlc_interface.h>
#include <vlc_url.h>
#include <vlc_charset.h>
51
#include <vlc_strings.h>
52

53
54
55
56
#ifdef HAVE_SYS_STAT_H
#   include <sys/stat.h>
#endif

57
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
58
 * Local prototypes
59
 *****************************************************************************/
60
61
static void Destructor( input_thread_t * p_input );

ivoire's avatar
ivoire committed
62
63
static  void* Run            ( vlc_object_t *p_this );
static  void* RunAndDestroy  ( vlc_object_t *p_this );
Laurent Aimar's avatar
Laurent Aimar committed
64

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
65
static input_thread_t * Create  ( vlc_object_t *, input_item_t *,
66
                                  const char *, bool, sout_instance_t * );
67
static  int             Init    ( input_thread_t *p_input );
68
static void             WaitDie   ( input_thread_t *p_input );
69
70
static void             End     ( input_thread_t *p_input );
static void             MainLoop( input_thread_t *p_input );
Laurent Aimar's avatar
Laurent Aimar committed
71

72
static inline int ControlPopNoLock( input_thread_t *, int *, vlc_value_t *, mtime_t i_deadline );
Laurent Aimar's avatar
Laurent Aimar committed
73
static void       ControlReduce( input_thread_t * );
74
static bool Control( input_thread_t *, int, vlc_value_t );
75

76
77
static int  UpdateFromAccess( input_thread_t * );
static int  UpdateFromDemux( input_thread_t * );
Michel Kaempf's avatar
Michel Kaempf committed
78

79
static void UpdateItemLength( input_thread_t *, int64_t i_length );
80

81
static void MRLSections( input_thread_t *, char *, int *, int *, int *, int *);
82
83

static input_source_t *InputSourceNew( input_thread_t *);
Laurent Aimar's avatar
   
Laurent Aimar committed
84
static int  InputSourceInit( input_thread_t *, input_source_t *,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
85
                             const char *, const char *psz_forced_demux );
86
static void InputSourceClean( input_source_t * );
87
88
/* TODO */
//static void InputGetAttachments( input_thread_t *, input_source_t * );
89
90
static void SlaveDemux( input_thread_t *p_input );
static void SlaveSeek( input_thread_t *p_input );
91

92
93
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 );
94
95
static char *InputGetExtraFiles( input_thread_t *p_input,
                                 const char *psz_access, const char *psz_path );
96

97
static void DemuxMeta( input_thread_t *p_input, vlc_meta_t *p_meta, demux_t *p_demux );
98
static void AccessMeta( input_thread_t * p_input, vlc_meta_t *p_meta );
99
100
101
static void AppendAttachment( int *pi_attachment, input_attachment_t ***ppp_attachment,
                              int i_new, input_attachment_t **pp_new );

102
103
static void SubtitleAdd( input_thread_t *p_input, char *psz_subtitle, bool b_forced );

104
/*****************************************************************************
105
106
 * 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
107
108
109
110
111
112
113
114
115
116
 *
 * 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
117
 *  - audio-delay, spu-delay
Laurent Aimar's avatar
Laurent Aimar committed
118
119
120
121
 *  - bookmark
 * * Get only:
 *  - length
 *  - bookmarks
122
123
 *  - seekable (if you can seek, it doesn't say if 'bar display' has be shown
 *    or not, for that check position != 0.0)
124
 *  - can-pause
125
 *  - can-record (if a stream can be recorded while playing)
126
 *  - teletext-es to get the index of spu track that is teletext --1 if no teletext)
127
 * * For intf callback upon changes:
Laurent Aimar's avatar
Laurent Aimar committed
128
 *  - intf-change
129
 *  - intf-change-vout for when a vout is created or destroyed
130
 *  - rate-change for when playback rate changes
131
 *  - stats-change for when statistics are updated
Laurent Aimar's avatar
Laurent Aimar committed
132
133
 * TODO explain when Callback is called
 * TODO complete this list (?)
134
 *****************************************************************************/
135
static input_thread_t *Create( vlc_object_t *p_parent, input_item_t *p_item,
136
                               const char *psz_header, bool b_quick,
137
                               sout_instance_t *p_sout )
Michel Kaempf's avatar
Michel Kaempf committed
138
{
139
    static const char input_name[] = "input";
140
    input_thread_t *p_input = NULL;                 /* thread descriptor */
141
142
    vlc_value_t val;
    int i;
143

144
    /* Allocate descriptor */
145
146
    p_input = vlc_custom_create( p_parent, sizeof( *p_input ),
                                 VLC_OBJECT_INPUT, input_name );
147
    if( p_input == NULL )
148
        return NULL;
149
150
151
152
153
154

    /* 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 );
155
156
157

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

158
159
160
161
162
163
164
    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 );

165
166
167
    p_input->p = calloc( 1, sizeof( input_thread_private_t ) );
    if( !p_input->p )
        return NULL;
168
169
170

    /* One "randomly" selected input thread is responsible for computing
     * the global stats. Check if there is already someone doing this */
171
    if( p_input->p_libvlc->p_stats && !b_quick )
172
    {
173
        libvlc_priv_t *p_private = libvlc_priv( p_input->p_libvlc );
174
        vlc_mutex_lock( &p_input->p_libvlc->p_stats->lock );
175
176
        if( p_private->p_stats_computer == NULL )
            p_private->p_stats_computer = p_input;
177
        vlc_mutex_unlock( &p_input->p_libvlc->p_stats->lock );
178
179
    }

180
    p_input->b_preparsing = b_quick;
181
    p_input->psz_header = psz_header ? strdup( psz_header ) : NULL;
182

183
    /* Init events */
184
185
186
    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 );
187
    vlc_event_manager_register_event_type( p_em, vlc_InputSelectedStreamChanged );
188

Laurent Aimar's avatar
Laurent Aimar committed
189
    /* Init Common fields */
190
191
    p_input->b_eof = false;
    p_input->b_can_pace_control = true;
zorglub's avatar
zorglub committed
192
    p_input->p->i_start = 0;
193
    p_input->i_time     = 0;
zorglub's avatar
zorglub committed
194
    p_input->p->i_stop  = 0;
195
    p_input->p->i_run   = 0;
zorglub's avatar
zorglub committed
196
    p_input->p->i_title = 0;
197
    p_input->p->title = NULL;
zorglub's avatar
zorglub committed
198
    p_input->p->i_title_offset = p_input->p->i_seekpoint_offset = 0;
Laurent Aimar's avatar
Laurent Aimar committed
199
    p_input->i_state = INIT_S;
200
    p_input->p->i_rate = INPUT_RATE_DEFAULT;
201
    p_input->p->b_recording = false;
202
203
    TAB_INIT( p_input->p->i_bookmark, p_input->p->bookmark );
    TAB_INIT( p_input->p->i_attachment, p_input->p->attachment );
204
205
    p_input->p->p_es_out_display = NULL;
    p_input->p->p_es_out = NULL;
206
    p_input->p->p_sout   = NULL;
207
    p_input->p->b_out_pace_control = false;
Laurent Aimar's avatar
Laurent Aimar committed
208
209
210
    p_input->i_pts_delay = 0;

    /* Init Input fields */
Pierre's avatar
Pierre committed
211
    vlc_gc_incref( p_item ); /* Released in Destructor() */
zorglub's avatar
zorglub committed
212
213
214
215
    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;
216
    p_input->p->input.b_title_demux = false;
zorglub's avatar
zorglub committed
217
218
219
    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;
220
221
222
223
    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
224
225
    p_input->p->input.i_cr_average = 0;

226
    vlc_mutex_lock( &p_item->lock );
227
228

    if( !p_item->p_stats )
229
230
        p_item->p_stats = stats_NewInputStats( p_input );
    vlc_mutex_unlock( &p_item->lock );
zorglub's avatar
zorglub committed
231

232
    /* No slave */
zorglub's avatar
zorglub committed
233
234
    p_input->p->i_slave = 0;
    p_input->p->slave   = NULL;
235

Laurent Aimar's avatar
Laurent Aimar committed
236
    /* Init control buffer */
237
    vlc_mutex_init( &p_input->p->lock_control );
238
    vlc_cond_init( &p_input->p->wait_control );
zorglub's avatar
zorglub committed
239
    p_input->p->i_control = 0;
240

gbazin's avatar
   
gbazin committed
241
    /* Parse input options */
242
    vlc_mutex_lock( &p_item->lock );
Pierre d'Herbemont's avatar
Pierre d'Herbemont committed
243
    assert( (int)p_item->optflagc == p_item->i_options );
244
    for( i = 0; i < p_item->i_options; i++ )
245
246
        var_OptionParse( VLC_OBJECT(p_input), p_item->ppsz_options[i],
                         !!(p_item->optflagv[i] & VLC_INPUT_OPTION_TRUSTED) );
247
    vlc_mutex_unlock( &p_item->lock );
gbazin's avatar
   
gbazin committed
248

Laurent Aimar's avatar
Laurent Aimar committed
249
250
    /* Create Object Variables for private use only */
    input_ConfigVarInit( p_input );
Michel Kaempf's avatar
Michel Kaempf committed
251

Laurent Aimar's avatar
Laurent Aimar committed
252
    /* Create Objects variables for public Get and Set */
253
    input_ControlVarInit( p_input );
254

255
    /* */
zorglub's avatar
zorglub committed
256
    p_input->p->input.i_cr_average = var_GetInteger( p_input, "cr-average" );
gbazin's avatar
gbazin committed
257

258
    if( !p_input->b_preparsing )
gbazin's avatar
gbazin committed
259
    {
260
261
        var_Get( p_input, "bookmarks", &val );
        if( val.psz_string )
gbazin's avatar
gbazin committed
262
        {
263
264
265
266
            /* 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
267
            {
hartman's avatar
hartman committed
268
                 seekpoint_t *p_seekpoint;
269
270
271
272
273
274
275
276
                 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 = ',';
hartman's avatar
hartman committed
277
278

                 p_seekpoint = vlc_seekpoint_New();
279
280
281
282
283
                 while( (psz_end = strchr( psz_start, ',' ) ) )
                 {
                     *psz_end = 0;
                     if( !strncmp( psz_start, "name=", 5 ) )
                     {
284
                         p_seekpoint->psz_name = strdup(psz_start + 5);
285
286
287
288
289
290
291
                     }
                     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
292
293
                         p_seekpoint->i_time_offset = atoll(psz_start + 5) *
                                                        1000000;
294
295
                     }
                     psz_start = psz_end + 1;
gbazin's avatar
gbazin committed
296
                }
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
297
                msg_Dbg( p_input, "adding bookmark: %s, bytes=%"PRId64", time=%"PRId64,
298
299
300
301
302
                                  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
303
            }
304
            free( val.psz_string );
gbazin's avatar
gbazin committed
305
306
307
        }
    }

308
    /* Remove 'Now playing' info as it is probably outdated */
309
    input_item_SetNowPlaying( p_item, NULL );
310

311
312
313
314
    /* */
    if( p_input->b_preparsing )
        p_input->i_flags |= OBJECT_FLAGS_QUIET | OBJECT_FLAGS_NOINTERACT;

315
316
317
318
    /* */
    if( p_sout )
        p_input->p->p_sout = p_sout;

319
    memset( &p_input->p->counters, 0, sizeof( p_input->p->counters ) );
320
    vlc_mutex_init( &p_input->p->counters.counters_lock );
321

322
323
324
    /* Set the destructor when we are sure we are initialized */
    vlc_object_set_destructor( p_input, (vlc_destructor_t)Destructor );

325
326
327
    /* Attach only once we are ready */
    vlc_object_attach( p_input, p_parent );

328
329
330
    return p_input;
}

331
332
333
334
/**
 * Input destructor (called when the object's refcount reaches 0).
 */
static void Destructor( input_thread_t * p_input )
335
{
336
337
338
339
340
341
#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

342
343
    vlc_event_manager_fini( &p_input->p->event_manager );

344
345
    stats_TimerDump( p_input, STATS_TIMER_INPUT_LAUNCHING );
    stats_TimerClean( p_input, STATS_TIMER_INPUT_LAUNCHING );
346
#ifdef ENABLE_SOUT
347
348
    if( p_input->p->p_sout )
        sout_DeleteInstance( p_input->p->p_sout );
349
#endif
Pierre's avatar
Pierre committed
350
351
    vlc_gc_decref( p_input->p->input.p_item );

352
353
    vlc_mutex_destroy( &p_input->p->counters.counters_lock );

354
    vlc_cond_destroy( &p_input->p->wait_control );
355
356
    vlc_mutex_destroy( &p_input->p->lock_control );
    free( p_input->p );
357
}
358

359
/**
360
361
 * Initialize an input thread and run it. You will need to monitor the
 * thread to clean up after it is done
362
363
364
365
366
367
368
 *
 * \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 )
369
{
370
    return __input_CreateThreadExtended( p_parent, p_item, NULL, NULL );
371
372
}

373
374
375
376
/* */
input_thread_t *__input_CreateThreadExtended( vlc_object_t *p_parent,
                                              input_item_t *p_item,
                                              const char *psz_log, sout_instance_t *p_sout )
377
{
378
    input_thread_t *p_input;
379

380
    p_input = Create( p_parent, p_item, psz_log, false, p_sout );
381
382
383
    if( !p_input )
        return NULL;

Sam Hocevar's avatar
Sam Hocevar committed
384
    /* Create thread and wait for its readiness. */
Laurent Aimar's avatar
Laurent Aimar committed
385
    if( vlc_thread_create( p_input, "input", Run,
386
                           VLC_THREAD_PRIORITY_INPUT, false ) )
Michel Kaempf's avatar
Michel Kaempf committed
387
    {
388
        input_ChangeState( p_input, ERROR_S );
389
        msg_Err( p_input, "cannot create input thread" );
390
391
        vlc_object_detach( p_input );
        vlc_object_release( p_input );
392
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
393
    }
394

395
    return p_input;
Michel Kaempf's avatar
Michel Kaempf committed
396
397
}

398
/**
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
399
 * Initialize an input thread and run it. This thread will clean after itself,
400
401
402
403
404
 * 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 ?
405
 * \return an error code, VLC_SUCCESS on success
406
 */
407
int __input_Read( vlc_object_t *p_parent, input_item_t *p_item,
408
                   bool b_block )
409
{
410
    input_thread_t *p_input;
411

412
    p_input = Create( p_parent, p_item, NULL, false, NULL );
413
    if( !p_input )
414
415
        return VLC_EGENERIC;

416
    if( b_block )
417
    {
ivoire's avatar
ivoire committed
418
        RunAndDestroy( VLC_OBJECT(p_input) );
zorglub's avatar
zorglub committed
419
        return VLC_SUCCESS;
420
    }
421
    else
422
    {
423
        if( vlc_thread_create( p_input, "input", RunAndDestroy,
424
                               VLC_THREAD_PRIORITY_INPUT, false ) )
425
        {
426
            input_ChangeState( p_input, ERROR_S );
427
            msg_Err( p_input, "cannot create input thread" );
428
            vlc_object_release( p_input );
zorglub's avatar
zorglub committed
429
            return VLC_EGENERIC;
430
        }
431
    }
432
    return VLC_SUCCESS;
433
}
434

435
436
437
438
439
440
441
442
443
444
/**
 * 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 )
{
445
    input_thread_t *p_input;
446

447
    /* Allocate descriptor */
448
    p_input = Create( p_parent, p_item, NULL, true, NULL );
449
450
451
    if( !p_input )
        return VLC_EGENERIC;

452
453
    if( !Init( p_input ) )
        End( p_input );
454

455
456
    vlc_object_detach( p_input );
    vlc_object_release( p_input );
457
458
459
460

    return VLC_SUCCESS;
}

461
462
463
464
465
/**
 * Request a running input thread to stop and die
 *
 * \param the input thread to stop
 */
466
static void ObjectKillChildrens( input_thread_t *p_input, vlc_object_t *p_obj )
Michel Kaempf's avatar
Michel Kaempf committed
467
{
Laurent Aimar's avatar
Laurent Aimar committed
468
469
    vlc_list_t *p_list;
    int i;
470
471
472
473
474
475

    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;

476
    vlc_object_kill( p_obj );
477

478
    p_list = vlc_list_children( p_obj );
Laurent Aimar's avatar
Laurent Aimar committed
479
    for( i = 0; i < p_list->i_count; i++ )
480
        ObjectKillChildrens( p_input, p_list->p_values[i].p_object );
Laurent Aimar's avatar
Laurent Aimar committed
481
    vlc_list_release( p_list );
482
483
484
485
486
487
}
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 */
488
    ObjectKillChildrens( p_input, VLC_OBJECT(p_input) );
Michel Kaempf's avatar
Michel Kaempf committed
489

Laurent Aimar's avatar
Laurent Aimar committed
490
    input_ControlPush( p_input, INPUT_CONTROL_SET_DIE, NULL );
Sam Hocevar's avatar
   
Sam Hocevar committed
491
492
}

493
sout_instance_t *input_DetachSout( input_thread_t *p_input )
494
{
sebastien's avatar
sebastien committed
495
    assert( p_input->b_dead );
496
497
498
499
    sout_instance_t *p_sout = p_input->p->p_sout;
    vlc_object_detach( p_sout );
    p_input->p->p_sout = NULL;
    return p_sout;
500
501
}

502
/*****************************************************************************
Laurent Aimar's avatar
Laurent Aimar committed
503
 * Run: main thread loop
504
505
 * This is the "normal" thread that spawns the input processing chain,
 * reads the stream, cleans up and waits
506
 *****************************************************************************/
507
static void *Run( vlc_object_t *p_this )
Michel Kaempf's avatar
Michel Kaempf committed
508
{
ivoire's avatar
ivoire committed
509
    input_thread_t *p_input = (input_thread_t *)p_this;
510
    const int canc = vlc_savecancel();
511

512
    if( Init( p_input ) )
Sam Hocevar's avatar
   
Sam Hocevar committed
513
514
    {
        /* If we failed, wait before we are killed, and exit */
515
        WaitDie( p_input );
516
        goto exit;
Sam Hocevar's avatar
   
Sam Hocevar committed
517
    }
Michel Kaempf's avatar
Michel Kaempf committed
518

519
520
    MainLoop( p_input );

521
    /* Wait until we are asked to die */
522
    if( !p_input->b_die )
523
        WaitDie( p_input );
524
525
526

    /* Clean up */
    End( p_input );
527
528
529

exit:
    p_input->b_dead = true;
530
    vlc_restorecancel( canc );
ivoire's avatar
ivoire committed
531
    return NULL;
532
533
534
}

/*****************************************************************************
535
 * RunAndDestroy: main thread loop
536
537
538
 * This is the "just forget me" thread that spawns the input processing chain,
 * reads the stream, cleans up and releases memory
 *****************************************************************************/
539
static void *RunAndDestroy( vlc_object_t *p_this )
540
{
ivoire's avatar
ivoire committed
541
    input_thread_t *p_input = (input_thread_t *)p_this;
542
    const int canc = vlc_savecancel();
543

544
    if( Init( p_input ) )
545
        goto exit;
546
547
548
549
550
551

    MainLoop( p_input );

    /* Clean up */
    End( p_input );

552
exit:
553
    /* Release memory */
554
    vlc_object_release( p_input );
555
556
    vlc_restorecancel( canc );
    return NULL;
557
558
559
560
561
}

/*****************************************************************************
 * Main loop: Fill buffers from access, and demux
 *****************************************************************************/
562
563
564
565
566
567

/**
 * 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 )
568
{
569
    int i_ret;
570

571
    *pb_changed = false;
572

573
574
575
576
577
578
579
    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
580
    {
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
        /* 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;
        }
    }
596

597
598
599
600
601
602
    if( i_ret == 0 )    /* EOF */
    {
        vlc_value_t repeat;

        var_Get( p_input, "input-repeat", &repeat );
        if( repeat.i_int == 0 )
603
        {
604
605
606
607
608
609
610
611
            /* 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;
612

613
614
615
            msg_Dbg( p_input, "repeating the same input (%d)",
                     repeat.i_int );
            if( repeat.i_int > 0 )
Laurent Aimar's avatar
Laurent Aimar committed
616
            {
617
618
                repeat.i_int--;
                var_Set( p_input, "input-repeat", repeat );
Laurent Aimar's avatar
Laurent Aimar committed
619
            }
620

621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
            /* 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
637
            {
638
639
640
                val.i_time = p_input->p->i_start;
                input_ControlPush( p_input, INPUT_CONTROL_SET_TIME,
                                   &val );
641
            }
642
            else
Laurent Aimar's avatar
Laurent Aimar committed
643
            {
644
645
646
                val.f_float = 0.0;
                input_ControlPush( p_input, INPUT_CONTROL_SET_POSITION,
                                   &val );
Laurent Aimar's avatar
Laurent Aimar committed
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
716
717
            /* */
            *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 );
    }
718
    var_SetBool( p_input, "stats-change", true );
719
720
721
722
723
724
725
726
727
}

/**
 * MainLoop
 * The main input loop.
 */
static void MainLoop( input_thread_t *p_input )
{
    mtime_t i_start_mdate = mdate();
728
729
    mtime_t i_intf_update = 0;
    mtime_t i_statistic_update = 0;
730
731
732
733

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

734
    while( vlc_object_alive( p_input ) && !p_input->b_error )
735
736
737
738
    {
        bool b_force_update;
        int i_type;
        vlc_value_t val;
739
        mtime_t i_current;
740
        mtime_t i_deadline;
741
        mtime_t i_wakeup;
742
        bool b_paused;
743

744
745
        /* Demux data */
        b_force_update = false;
746
        i_wakeup = 0;
747
748
749
        /* FIXME if p_input->i_state == PAUSE_S the access/access_demux
         * is paused -> this may cause problem with some of them
         * The same problem can be seen when seeking while paused */
750
        b_paused = p_input->i_state == PAUSE_S &&
751
                   !es_out_GetBuffering( p_input->p->p_es_out );
752
753

        if( !b_paused )
754
        {
755
756
757
            if( !p_input->p->input.b_eof )
            {
                MainLoopDemux( p_input, &b_force_update, &i_start_mdate );
758

759
760
761
762
763
764
765
766
767
768
769
                i_wakeup = es_out_GetWakeup( p_input->p->p_es_out );
            }
            else if( !p_input->b_eof && !es_out_GetEmpty( p_input->p->p_es_out ) )
            {
                msg_Dbg( p_input, "waiting decoder fifos to empty" );
                i_wakeup = mdate() + INPUT_IDLE_SLEEP;
            }
            else
            {
                break;
            }
770
        }
771
772

        /* */
773
774
        do {
            i_deadline = i_wakeup;
775
            if( b_paused )
776
777
778
779
780
781
782
783
                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 );
784

785
786
787
788
                if( Control( p_input, i_type, val ) )
                    b_force_update = true;
            }
            vlc_mutex_unlock( &p_input->p->lock_control );
789

790
791
792
793
794
795
796
797
798
799
800
801
802
            /* 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);
            }
803
804
805
806

            /* Check if i_wakeup is still valid */
            if( i_wakeup != 0 )
            {
807
                mtime_t i_new_wakeup = es_out_GetWakeup( p_input->p->p_es_out );
808
809
810
                if( !i_new_wakeup )
                    i_wakeup = 0;
            }
811
        } while( i_current < i_wakeup );
Laurent Aimar's avatar
Laurent Aimar committed
812
    }
813

814
    if( !p_input->b_error )
815
        input_ChangeState( p_input, END_S );
816
817
}

818
static void InitStatistics( input_thread_t * p_input )
Michel Kaempf's avatar
Michel Kaempf committed
819
{
820
    if( p_input->b_preparsing ) return;
821

822
823
824
    /* Prepare statistics */
#define INIT_COUNTER( c, type, compute ) p_input->p->counters.p_##c = \
 stats_CounterCreate( p_input, VLC_VAR_##type, STATS_##compute);
825
    if( libvlc_stats( p_input ) )
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
    {
        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;
846
    }
847
}
848

849
#ifdef ENABLE_SOUT
850
851
852
853
854
855
856
857
858
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 ) )
859
    {
860
861
        /* Check the validity of the provided sout */
        if( p_input->p->p_sout )
zorglub's avatar
zorglub committed
862
        {
863
            if( strcmp( p_input->p->p_sout->psz_sout, psz ) )
864
            {
865
                msg_Dbg( p_input, "destroying unusable sout" );
866

867
868
                sout_DeleteInstance( p_input->p->p_sout );
                p_input->p->p_sout = NULL;
869
            }
870
        }
871

872
873
874
875
876
877
878
879
880
881
882
883
884
        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
885
            {
886
887
888
889
890
                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
891
            }
892
        }
893
        if( libvlc_stats( p_input ) )
894
        {
895
            INIT_COUNTER( sout_sent_packets, INTEGER, COUNTER );
896
            INIT_COUNTER( sout_sent_bytes, INTEGER, COUNTER );
897
898
899
900
            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;
901
        }
902
    }
903
    else if( p_input->p->p_sout )
904
    {
905
906
907
908
        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
909
    }
910
    free( psz );
911

912
913
    return VLC_SUCCESS;
}
914
#endif
915

916
917
918
static void InitTitle( input_thread_t * p_input )
{
    vlc_value_t val;
Laurent Aimar's avatar
Laurent Aimar committed
919

920
    if( p_input->b_preparsing ) return;
921

922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
    /* 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 );
946
947
    if( val.i_int < 0 )
        p_input->i_pts_delay -= (val.i_int * 1000);
948
949
950
951
952
953

    /* 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
954

955
956
957
958
static void StartTitle( input_thread_t * p_input )
{
    double f_fps;
    vlc_value_t val;
959
    int i_delay;