input.c 105 KB
Newer Older
1 2
/*****************************************************************************
 * input.c: input thread
3
 *****************************************************************************
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
4
 * Copyright (C) 1998-2007 VLC authors and VideoLAN
5
 * $Id$
6
 *
7
 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8
 *          Laurent Aimar <fenrir@via.ecp.fr>
9
 *
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
10 11 12
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
13
 * (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
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
17 18
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
19
 *
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
20 21 22
 * You should have received a copy of the GNU Lesser 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.
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>
33

Christophe Mutricy's avatar
Christophe Mutricy committed
34
#include <limits.h>
35
#include <assert.h>
36
#include <errno.h>
37 38 39
#ifdef HAVE_SYS_STAT_H
#   include <sys/stat.h>
#endif
40

41
#include "input_internal.h"
42
#include "event.h"
43
#include "es_out.h"
44
#include "es_out_timeshift.h"
45
#include "access.h"
46
#include "demux.h"
47
#include "stream.h"
48
#include "item.h"
49
#include "resource.h"
50

Clément Stenac's avatar
Clément Stenac committed
51 52
#include <vlc_sout.h>
#include "../stream_output/stream_output.h"
53

54
#include <vlc_dialog.h>
Clément Stenac's avatar
Clément Stenac committed
55 56
#include <vlc_url.h>
#include <vlc_charset.h>
57
#include <vlc_fs.h>
58
#include <vlc_strings.h>
59
#include <vlc_modules.h>
60

61
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
62
 * Local prototypes
63
 *****************************************************************************/
64 65
static void Destructor( input_thread_t * p_input );

66
static  void *Run            ( void * );
67

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
68
static input_thread_t * Create  ( vlc_object_t *, input_item_t *,
69
                                  const char *, bool, input_resource_t * );
70
static  int             Init    ( input_thread_t *p_input );
71
static void             End     ( input_thread_t *p_input );
72
static void             MainLoop( input_thread_t *p_input, bool b_interactive );
73

Laurent Aimar's avatar
Laurent Aimar committed
74 75
static void ObjectKillChildrens( input_thread_t *, vlc_object_t * );

76
static inline int ControlPop( input_thread_t *, int *, vlc_value_t *, mtime_t i_deadline, bool b_postpone_seek );
77
static void       ControlRelease( int i_type, vlc_value_t val );
78
static bool       ControlIsSeekRequest( int i_type );
79
static bool       Control( input_thread_t *, int, vlc_value_t );
80

81 82 83 84 85
static int  UpdateTitleSeekpointFromAccess( input_thread_t * );
static void UpdateGenericFromAccess( input_thread_t * );

static int  UpdateTitleSeekpointFromDemux( input_thread_t * );
static void UpdateGenericFromDemux( input_thread_t * );
Michel Kaempf's avatar
Michel Kaempf committed
86

87
static void MRLSections( const char *, int *, int *, int *, int *);
88 89

static input_source_t *InputSourceNew( input_thread_t *);
90
static int  InputSourceInit( input_thread_t *, input_source_t *,
91 92
                             const char *, const char *psz_forced_demux,
                             bool b_in_can_fail );
93
static void InputSourceClean( input_source_t * );
Laurent Aimar's avatar
Laurent Aimar committed
94 95
static void InputSourceMeta( input_thread_t *, input_source_t *, vlc_meta_t * );

96 97
/* TODO */
//static void InputGetAttachments( input_thread_t *, input_source_t * );
98
static void SlaveDemux( input_thread_t *p_input, bool *pb_demux_polled );
99
static void SlaveSeek( input_thread_t *p_input );
100

101 102
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 );
103 104 105
static void InputGetExtraFiles( input_thread_t *p_input,
                                int *pi_list, char ***pppsz_list,
                                const char *psz_access, const char *psz_path );
106

107 108 109
static void AppendAttachment( int *pi_attachment, input_attachment_t ***ppp_attachment,
                              int i_new, input_attachment_t **pp_new );

110 111 112
enum {
    SUB_NOFLAG = 0x00,
    SUB_FORCED = 0x01,
113
    SUB_CANFAIL = 0x02,
114 115
};
static void SubtitleAdd( input_thread_t *p_input, char *psz_subtitle, unsigned i_flags );
116

117 118
static void input_ChangeState( input_thread_t *p_input, int i_state ); /* TODO fix name */

119
#undef input_Create
120 121 122 123 124 125 126 127 128 129 130 131
/**
 * Create a new input_thread_t.
 *
 * You need to call input_Start on it when you are done
 * adding callback on the variables/events you want to monitor.
 *
 * \param p_parent a vlc_object
 * \param p_item an input item
 * \param psz_log an optional prefix for this input logs
 * \param p_resource an optional input ressource
 * \return a pointer to the spawned input thread
 */
132 133 134
input_thread_t *input_Create( vlc_object_t *p_parent,
                              input_item_t *p_item,
                              const char *psz_log, input_resource_t *p_resource )
135 136 137 138
{
    return Create( p_parent, p_item, psz_log, false, p_resource );
}

139
#undef input_CreateAndStart
140 141 142 143 144 145 146
/**
 * Create a new input_thread_t and start it.
 *
 * Provided for convenience.
 *
 * \see input_Create
 */
147 148
input_thread_t *input_CreateAndStart( vlc_object_t *p_parent,
                                      input_item_t *p_item, const char *psz_log )
149
{
150
    input_thread_t *p_input = input_Create( p_parent, p_item, psz_log, NULL );
151 152 153 154 155 156 157 158 159

    if( input_Start( p_input ) )
    {
        vlc_object_release( p_input );
        return NULL;
    }
    return p_input;
}

160
#undef input_Read
161
/**
162
 * Initialize an input thread and run it until it stops by itself.
163 164 165 166 167
 *
 * \param p_parent a vlc_object
 * \param p_item an input item
 * \return an error code, VLC_SUCCESS on success
 */
168
int input_Read( vlc_object_t *p_parent, input_item_t *p_item )
169
{
170
    input_thread_t *p_input = Create( p_parent, p_item, NULL, false, NULL );
171 172 173
    if( !p_input )
        return VLC_EGENERIC;

174 175
    if( !Init( p_input ) )
    {
176
        MainLoop( p_input, false );
177 178 179 180
        End( p_input );
    }

    vlc_object_release( p_input );
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218
    return VLC_SUCCESS;
}

/**
 * Initialize an input and initialize it to preparse the item
 * This function is blocking. It will only accept parsing regular 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 )
{
    input_thread_t *p_input;

    /* Allocate descriptor */
    p_input = Create( p_parent, p_item, NULL, true, NULL );
    if( !p_input )
        return VLC_EGENERIC;

    if( !Init( p_input ) )
        End( p_input );

    vlc_object_release( p_input );

    return VLC_SUCCESS;
}

/**
 * Start a input_thread_t created by input_Create.
 *
 * You must not start an already running input_thread_t.
 *
 * \param the input thread to start
 */
int input_Start( input_thread_t *p_input )
{
    /* Create thread and wait for its readiness. */
219 220 221
    p_input->p->is_running = !vlc_clone( &p_input->p->thread,
                                         Run, p_input, VLC_THREAD_PRIORITY_INPUT );
    if( !p_input->p->is_running )
222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253
    {
        input_ChangeState( p_input, ERROR_S );
        msg_Err( p_input, "cannot create input thread" );
        return VLC_EGENERIC;
    }
    return VLC_SUCCESS;
}

/**
 * Request a running input thread to stop and die
 *
 * b_abort must be true when a user stop is requested and not because you have
 * detected an error or an eof. It will be used to properly send the
 * INPUT_EVENT_ABORT event.
 *
 * \param p_input the input thread to stop
 * \param b_abort true if the input has been aborted by a user request
 */
void input_Stop( input_thread_t *p_input, bool b_abort )
{
    /* 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 */
    ObjectKillChildrens( p_input, VLC_OBJECT(p_input) );

    vlc_mutex_lock( &p_input->p->lock_control );
    p_input->p->b_abort |= b_abort;
    vlc_mutex_unlock( &p_input->p->lock_control );

    input_ControlPush( p_input, INPUT_CONTROL_SET_DIE, NULL );
}

254 255 256 257 258 259 260 261 262 263 264
void input_Join( input_thread_t *p_input )
{
    if( p_input->p->is_running )
        vlc_join( p_input->p->thread, NULL );
}

void input_Release( input_thread_t *p_input )
{
    vlc_object_release( p_input );
}

Laurent Aimar's avatar
Laurent Aimar committed
265 266 267 268 269
/**
 * Close an input
 *
 * It does not call input_Stop itself.
 */
270
void input_Close( input_thread_t *p_input )
Laurent Aimar's avatar
Laurent Aimar committed
271
{
272 273
    input_Join( p_input );
    input_Release( p_input );
Laurent Aimar's avatar
Laurent Aimar committed
274 275
}

276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295
/**
 * Get the item from an input thread
 * FIXME it does not increase ref count of the item.
 * if it is used after p_input is destroyed nothing prevent it from
 * being freed.
 */
input_item_t *input_GetItem( input_thread_t *p_input )
{
    assert( p_input && p_input->p );
    return p_input->p->p_item;
}

/*****************************************************************************
 * ObjectKillChildrens
 *****************************************************************************/
static void ObjectKillChildrens( input_thread_t *p_input, vlc_object_t *p_obj )
{
    vlc_list_t *p_list;

    /* FIXME ObjectKillChildrens seems a very bad idea in fact */
296
    if( p_obj == VLC_OBJECT(p_input->p->p_sout) )
297 298 299 300 301
        return;

    vlc_object_kill( p_obj );

    p_list = vlc_list_children( p_obj );
302
    for( int i = 0; i < p_list->i_count; i++ )
303 304 305 306
        ObjectKillChildrens( p_input, p_list->p_values[i].p_object );
    vlc_list_release( p_list );
}

307
/*****************************************************************************
308 309
 * This function creates a new input, and returns a pointer
 * to its description. On error, it returns NULL.
310
 *
Laurent Aimar's avatar
Laurent Aimar committed
311
 * XXX Do not forget to update vlc_input.h if you add new variables.
312
 *****************************************************************************/
313
static input_thread_t *Create( vlc_object_t *p_parent, input_item_t *p_item,
314
                               const char *psz_header, bool b_quick,
315
                               input_resource_t *p_resource )
Michel Kaempf's avatar
Michel Kaempf committed
316
{
317
    input_thread_t *p_input = NULL;                 /* thread descriptor */
318
    int i;
319

320
    /* Allocate descriptor */
321
    p_input = vlc_custom_create( p_parent, sizeof( *p_input ), "input" );
322
    if( p_input == NULL )
323
        return NULL;
324 325 326 327 328 329

    /* 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 );
330 331 332

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

333 334
    free( psz_name );

335 336 337
    p_input->p = calloc( 1, sizeof( input_thread_private_t ) );
    if( !p_input->p )
        return NULL;
338

339 340 341 342 343 344 345 346
    /* Parse input options */
    vlc_mutex_lock( &p_item->lock );
    assert( (int)p_item->optflagc == p_item->i_options );
    for( i = 0; i < p_item->i_options; i++ )
        var_OptionParse( VLC_OBJECT(p_input), p_item->ppsz_options[i],
                         !!(p_item->optflagv[i] & VLC_INPUT_OPTION_TRUSTED) );
    vlc_mutex_unlock( &p_item->lock );

347
    p_input->b_preparsing = b_quick;
348
    p_input->psz_header = psz_header ? strdup( psz_header ) : NULL;
349

350
    /* Init Common fields */
351
    p_input->b_eof = false;
352
    p_input->p->b_can_pace_control = true;
Clément Stenac's avatar
Clément Stenac committed
353
    p_input->p->i_start = 0;
Laurent Aimar's avatar
Laurent Aimar committed
354
    p_input->p->i_time  = 0;
Clément Stenac's avatar
Clément Stenac committed
355
    p_input->p->i_stop  = 0;
356
    p_input->p->i_run   = 0;
Clément Stenac's avatar
Clément Stenac committed
357
    p_input->p->i_title = 0;
358
    p_input->p->title = NULL;
Clément Stenac's avatar
Clément Stenac committed
359
    p_input->p->i_title_offset = p_input->p->i_seekpoint_offset = 0;
Laurent Aimar's avatar
Laurent Aimar committed
360
    p_input->p->i_state = INIT_S;
361
    p_input->p->i_rate = INPUT_RATE_DEFAULT;
362
    p_input->p->b_recording = false;
363 364
    memset( &p_input->p->bookmark, 0, sizeof(p_input->p->bookmark) );
    TAB_INIT( p_input->p->i_bookmark, p_input->p->pp_bookmark );
365
    TAB_INIT( p_input->p->i_attachment, p_input->p->attachment );
366
    p_input->p->p_sout   = NULL;
367
    p_input->p->b_out_pace_control = false;
368

Pierre's avatar
Pierre committed
369
    vlc_gc_incref( p_item ); /* Released in Destructor() */
370 371 372
    p_input->p->p_item = p_item;

    /* Init Input fields */
Clément Stenac's avatar
Clément Stenac committed
373 374 375
    p_input->p->input.p_access = NULL;
    p_input->p->input.p_stream = NULL;
    p_input->p->input.p_demux  = NULL;
376
    p_input->p->input.b_title_demux = false;
Clément Stenac's avatar
Clément Stenac committed
377 378 379
    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;
380 381 382 383
    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;
Clément Stenac's avatar
Clément Stenac committed
384

385
    vlc_mutex_lock( &p_item->lock );
386 387

    if( !p_item->p_stats )
388 389
        p_item->p_stats = stats_NewInputStats( p_input );
    vlc_mutex_unlock( &p_item->lock );
390

391
    /* No slave */
Clément Stenac's avatar
Clément Stenac committed
392 393
    p_input->p->i_slave = 0;
    p_input->p->slave   = NULL;
394

395
    /* */
396
    if( p_resource )
397 398
    {
        p_input->p->p_resource_private = NULL;
399
        p_input->p->p_resource = input_resource_Hold( p_resource );
400
    }
401
    else
402 403
    {
        p_input->p->p_resource_private = input_resource_New( VLC_OBJECT( p_input ) );
404
        p_input->p->p_resource = input_resource_Hold( p_input->p->p_resource_private );
405
    }
406
    input_resource_SetInput( p_input->p->p_resource, p_input );
407

408
    /* Init control buffer */
409
    vlc_mutex_init( &p_input->p->lock_control );
410
    vlc_cond_init( &p_input->p->wait_control );
Clément Stenac's avatar
Clément Stenac committed
411
    p_input->p->i_control = 0;
412
    p_input->p->b_abort = false;
413
    p_input->p->is_running = false;
414

415 416
    /* Create Object Variables for private use only */
    input_ConfigVarInit( p_input );
Michel Kaempf's avatar
Michel Kaempf committed
417

418
    /* Create Objects variables for public Get and Set */
419
    input_ControlVarInit( p_input );
420

421
    /* */
422
    if( !p_input->b_preparsing )
Gildas Bazin's avatar
Gildas Bazin committed
423
    {
424 425
        char *psz_bookmarks = var_GetNonEmptyString( p_input, "bookmarks" );
        if( psz_bookmarks )
Gildas Bazin's avatar
Gildas Bazin committed
426
        {
427 428
            /* FIXME: have a common cfg parsing routine used by sout and others */
            char *psz_parser, *psz_start, *psz_end;
429
            psz_parser = psz_bookmarks;
430
            while( (psz_start = strchr( psz_parser, '{' ) ) )
Gildas Bazin's avatar
Gildas Bazin committed
431
            {
432
                 seekpoint_t *p_seekpoint;
433 434 435 436 437 438 439 440
                 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 = ',';
441 442

                 p_seekpoint = vlc_seekpoint_New();
443 444 445 446 447
                 while( (psz_end = strchr( psz_start, ',' ) ) )
                 {
                     *psz_end = 0;
                     if( !strncmp( psz_start, "name=", 5 ) )
                     {
448
                         p_seekpoint->psz_name = strdup(psz_start + 5);
449 450 451 452 453 454 455
                     }
                     else if( !strncmp( psz_start, "bytes=", 6 ) )
                     {
                         p_seekpoint->i_byte_offset = atoll(psz_start + 6);
                     }
                     else if( !strncmp( psz_start, "time=", 5 ) )
                     {
456 457
                         p_seekpoint->i_time_offset = atoll(psz_start + 5) *
                                                        1000000;
458 459
                     }
                     psz_start = psz_end + 1;
Gildas Bazin's avatar
Gildas Bazin committed
460
                }
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
461
                msg_Dbg( p_input, "adding bookmark: %s, bytes=%"PRId64", time=%"PRId64,
462 463 464 465 466
                                  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;
Gildas Bazin's avatar
Gildas Bazin committed
467
            }
468
            free( psz_bookmarks );
Gildas Bazin's avatar
Gildas Bazin committed
469 470 471
        }
    }

472
    /* Remove 'Now playing' info as it is probably outdated */
473
    input_item_SetNowPlaying( p_item, NULL );
474
    input_SendEventMeta( p_input );
475

476 477 478 479
    /* */
    if( p_input->b_preparsing )
        p_input->i_flags |= OBJECT_FLAGS_QUIET | OBJECT_FLAGS_NOINTERACT;

480 481 482 483
    /* Make sure the interaction option is honored */
    if( !var_InheritBool( p_input, "interact" ) )
        p_input->i_flags |= OBJECT_FLAGS_NOINTERACT;

484
    /* */
485
    memset( &p_input->p->counters, 0, sizeof( p_input->p->counters ) );
486
    vlc_mutex_init( &p_input->p->counters.counters_lock );
487

488 489 490
    p_input->p->p_es_out_display = input_EsOutNew( p_input, p_input->p->i_rate );
    p_input->p->p_es_out = NULL;

491 492 493
    /* Set the destructor when we are sure we are initialized */
    vlc_object_set_destructor( p_input, (vlc_destructor_t)Destructor );

494 495 496
    return p_input;
}

497 498 499 500
/**
 * Input destructor (called when the object's refcount reaches 0).
 */
static void Destructor( input_thread_t * p_input )
501
{
502
#ifndef NDEBUG
503
    char * psz_name = input_item_GetName( p_input->p->p_item );
504 505 506 507
    msg_Dbg( p_input, "Destroying the input for '%s'", psz_name);
    free( psz_name );
#endif

508 509 510
    if( p_input->p->p_es_out_display )
        es_out_Delete( p_input->p->p_es_out_display );

511 512
    if( p_input->p->p_resource )
        input_resource_Release( p_input->p->p_resource );
513
    if( p_input->p->p_resource_private )
514
        input_resource_Release( p_input->p->p_resource_private );
515

516
    vlc_gc_decref( p_input->p->p_item );
Pierre's avatar
Pierre committed
517

518 519
    vlc_mutex_destroy( &p_input->p->counters.counters_lock );

520
    for( int i = 0; i < p_input->p->i_control; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
521 522 523 524
    {
        input_control_t *p_ctrl = &p_input->p->control[i];
        ControlRelease( p_ctrl->i_type, p_ctrl->val );
    }
525

526
    vlc_cond_destroy( &p_input->p->wait_control );
527 528
    vlc_mutex_destroy( &p_input->p->lock_control );
    free( p_input->p );
529
}
530

531
/*****************************************************************************
532
 * Run: main thread loop
533 534
 * This is the "normal" thread that spawns the input processing chain,
 * reads the stream, cleans up and waits
535
 *****************************************************************************/
536
static void *Run( void *obj )
Michel Kaempf's avatar
Michel Kaempf committed
537
{
538
    input_thread_t *p_input = (input_thread_t *)obj;
539
    const int canc = vlc_savecancel();
540

541
    if( Init( p_input ) )
542
        goto exit;
Michel Kaempf's avatar
Michel Kaempf committed
543

544
    MainLoop( p_input, true ); /* FIXME it can be wrong (like with VLM) */
545 546 547

    /* Clean up */
    End( p_input );
548 549

exit:
550
    /* Tell we're dead */
551 552 553 554 555
    vlc_mutex_lock( &p_input->p->lock_control );
    const bool b_abort = p_input->p->b_abort;
    vlc_mutex_unlock( &p_input->p->lock_control );

    if( b_abort )
556
        input_SendEventAbort( p_input );
557
    input_SendEventDead( p_input );
558

559
    vlc_restorecancel( canc );
560
    return NULL;
561 562 563 564 565
}

/*****************************************************************************
 * Main loop: Fill buffers from access, and demux
 *****************************************************************************/
566 567 568 569 570

/**
 * MainLoopDemux
 * It asks the demuxer to demux some data
 */
571
static void MainLoopDemux( input_thread_t *p_input, bool *pb_changed, bool *pb_demux_polled, mtime_t i_start_mdate )
572
{
573
    int i_ret;
574

575
    *pb_changed = false;
576
    *pb_demux_polled = p_input->p->input.p_demux->pf_demux != NULL;
577

Laurent Aimar's avatar
Laurent Aimar committed
578
    if( ( p_input->p->i_stop > 0 && p_input->p->i_time >= p_input->p->i_stop ) ||
579
        ( p_input->p->i_run > 0 && i_start_mdate+p_input->p->i_run < mdate() ) )
580 581
        i_ret = 0; /* EOF */
    else
Laurent Aimar's avatar
Laurent Aimar committed
582
        i_ret = demux_Demux( p_input->p->input.p_demux );
583 584

    if( i_ret > 0 )
585
    {
586
        if( p_input->p->input.p_demux->info.i_update )
587
        {
588 589 590 591 592 593
            if( p_input->p->input.b_title_demux )
            {
                i_ret = UpdateTitleSeekpointFromDemux( p_input );
                *pb_changed = true;
            }
            UpdateGenericFromDemux( p_input );
594
        }
595 596
        else if( p_input->p->input.p_access &&
                 p_input->p->input.p_access->info.i_update )
597
        {
598 599 600 601 602 603
            if( !p_input->p->input.b_title_demux )
            {
                i_ret = UpdateTitleSeekpointFromAccess( p_input );
                *pb_changed = true;
            }
            UpdateGenericFromAccess( p_input );
604 605
        }
    }
606

607 608
    if( i_ret == 0 )    /* EOF */
    {
609 610
        msg_Dbg( p_input, "EOF reached" );
        p_input->p->input.b_eof = true;
611
        es_out_Eos(p_input->p->p_es_out);
612 613 614 615 616 617 618 619
    }
    else if( i_ret < 0 )
    {
        input_ChangeState( p_input, ERROR_S );
    }

    if( i_ret > 0 && p_input->p->i_slave > 0 )
    {
620 621 622 623
        bool b_demux_polled;
        SlaveDemux( p_input, &b_demux_polled );

        *pb_demux_polled |= b_demux_polled;
624 625 626
    }
}

627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672
static int MainLoopTryRepeat( input_thread_t *p_input, mtime_t *pi_start_mdate )
{
    int i_repeat = var_GetInteger( p_input, "input-repeat" );
    if( i_repeat == 0 )
        return VLC_EGENERIC;

    vlc_value_t val;

    msg_Dbg( p_input, "repeating the same input (%d)", i_repeat );
    if( i_repeat > 0 )
    {
        i_repeat--;
        var_SetInteger( p_input, "input-repeat", i_repeat );
    }

    /* 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 )
    {
        val.i_time = p_input->p->i_start;
        input_ControlPush( p_input, INPUT_CONTROL_SET_TIME, &val );
    }
    else
    {
        val.f_float = 0.0;
        input_ControlPush( p_input, INPUT_CONTROL_SET_POSITION, &val );
    }

    /* */
    *pi_start_mdate = mdate();
    return VLC_SUCCESS;
}

673 674 675 676 677 678
/**
 * MainLoopInterface
 * It update the variables used by the interfaces
 */
static void MainLoopInterface( input_thread_t *p_input )
{
679 680 681
    double f_position = 0.0;
    mtime_t i_time = 0;
    mtime_t i_length = 0;
682 683

    /* update input status variables */
684
    if( demux_Control( p_input->p->input.p_demux,
685 686
                       DEMUX_GET_POSITION, &f_position ) )
        f_position = 0.0;
687

688
    if( demux_Control( p_input->p->input.p_demux,
689 690
                       DEMUX_GET_TIME, &i_time ) )
        i_time = 0;
Laurent Aimar's avatar
Laurent Aimar committed
691
    p_input->p->i_time = i_time;
692 693

    if( demux_Control( p_input->p->input.p_demux,
694 695
                       DEMUX_GET_LENGTH, &i_length ) )
        i_length = 0;
696

697
    es_out_SetTimes( p_input->p->p_es_out, f_position, i_time, i_length );
698 699 700 701 702 703 704

    /* update current bookmark */
    vlc_mutex_lock( &p_input->p->p_item->lock );
    p_input->p->bookmark.i_time_offset = i_time;
    if( p_input->p->input.p_stream )
        p_input->p->bookmark.i_byte_offset = stream_Tell( p_input->p->input.p_stream );
    vlc_mutex_unlock( &p_input->p->p_item->lock );
705 706 707 708 709 710 711 712
}

/**
 * MainLoopStatistic
 * It updates the globals statics
 */
static void MainLoopStatistic( input_thread_t *p_input )
{
713
    stats_ComputeInputStats( p_input, p_input->p->p_item->p_stats );
714
    input_SendEventStatistics( p_input );
715 716 717 718 719 720
}

/**
 * MainLoop
 * The main input loop.
 */
721
static void MainLoop( input_thread_t *p_input, bool b_interactive )
722 723
{
    mtime_t i_start_mdate = mdate();
724 725
    mtime_t i_intf_update = 0;
    mtime_t i_statistic_update = 0;
726
    mtime_t i_last_seek_mdate = 0;
727 728
    bool b_pause_after_eof = b_interactive &&
                             var_CreateGetBool( p_input, "play-and-pause" );
729

730
    while( vlc_object_alive( p_input ) && !p_input->b_error )
731 732 733
    {
        bool b_force_update;
        vlc_value_t val;
734
        mtime_t i_current;
735
        mtime_t i_wakeup;
736
        bool b_paused;
737
        bool b_demux_polled;
738

739 740
        /* Demux data */
        b_force_update = false;
741
        i_wakeup = 0;
Laurent Aimar's avatar
Laurent Aimar committed
742
        /* FIXME if p_input->p->i_state == PAUSE_S the access/access_demux
743 744
         * is paused -> this may cause problem with some of them
         * The same problem can be seen when seeking while paused */
Laurent Aimar's avatar
Laurent Aimar committed
745
        b_paused = p_input->p->i_state == PAUSE_S &&
746
                   ( !es_out_GetBuffering( p_input->p->p_es_out ) || p_input->p->input.b_eof );
747

748
        b_demux_polled = true;
749
        if( !b_paused )
750
        {
751 752
            if( !p_input->p->input.b_eof )
            {
753
                MainLoopDemux( p_input, &b_force_update, &b_demux_polled, i_start_mdate );
754

755 756
                i_wakeup = es_out_GetWakeup( p_input->p->p_es_out );
            }
757
            else if( !es_out_GetEmpty( p_input->p->p_es_out ) )
758 759 760 761
            {
                msg_Dbg( p_input, "waiting decoder fifos to empty" );
                i_wakeup = mdate() + INPUT_IDLE_SLEEP;
            }
762 763 764
            /* Pause after eof only if the input is pausable.
             * This way we won't trigger timeshifting for nothing */
            else if( b_pause_after_eof && p_input->p->b_can_pause )
765 766 767 768 769 770 771
            {
                msg_Dbg( p_input, "pausing at EOF (pause after each)");
                val.i_int = PAUSE_S;
                Control( p_input, INPUT_CONTROL_SET_STATE, val );

                b_paused = true;
            }
772 773
            else
            {
774 775
                if( MainLoopTryRepeat( p_input, &i_start_mdate ) )
                    break;
776
                b_pause_after_eof = var_GetBool( p_input, "play-and-pause" );
777
            }
778
        }
779 780

        /* */
781
        do {
782
            mtime_t i_deadline = i_wakeup;
783
            if( b_paused || !b_demux_polled )
784 785 786
                i_deadline = __MIN( i_intf_update, i_statistic_update );

            /* Handle control */
787
            for( ;; )
788
            {
789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810
                mtime_t i_limit = i_deadline;

                /* We will postpone the execution of a seek until we have
                 * finished the ES bufferisation (postpone is limited to
                 * 125ms) */
                bool b_buffering = es_out_GetBuffering( p_input->p->p_es_out ) &&
                                   !p_input->p->input.b_eof;
                if( b_buffering )
                {
                    /* When postpone is in order, check the ES level every 20ms */
                    mtime_t i_current = mdate();
                    if( i_last_seek_mdate + INT64_C(125000) >= i_current )
                        i_limit = __MIN( i_deadline, i_current + INT64_C(20000) );
                }

                int i_type;
                if( ControlPop( p_input, &i_type, &val, i_limit, b_buffering ) )
                {
                    if( b_buffering && i_limit < i_deadline )
                        continue;
                    break;
                }
811

812
#ifndef NDEBUG
813
                msg_Dbg( p_input, "control type=%d", i_type );
814
#endif
815

816
                if( Control( p_input, i_type, val ) )
817 818 819
                {
                    if( ControlIsSeekRequest( i_type ) )
                        i_last_seek_mdate = mdate();
820
                    b_force_update = true;
821
                }
822
            }
823

824 825 826 827 828 829 830 831 832 833 834 835 836
            /* 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);
            }
837

838
            /* Update the wakeup time */
839
            if( i_wakeup != 0 )
840
                i_wakeup = es_out_GetWakeup( p_input->p->p_es_out );
841
        } while( i_current < i_wakeup );
842
    }
843

844
    if( !p_input->b_error )
845
        input_ChangeState( p_input, END_S );
846 847
}

848
static void InitStatistics( input_thread_t * p_input )
Michel Kaempf's avatar
Michel Kaempf committed
849
{
850
    if( p_input->b_preparsing ) return;
851

852
    /* Prepare statistics */
853 854
#define INIT_COUNTER( c, compute ) p_input->p->counters.p_##c = \
 stats_CounterCreate( STATS_##compute);
855
    if( libvlc_stats( p_input ) )
856
    {
857 858 859 860 861 862 863 864 865 866 867 868 869 870
        INIT_COUNTER( read_bytes, COUNTER );
        INIT_COUNTER( read_packets, COUNTER );
        INIT_COUNTER( demux_read, COUNTER );
        INIT_COUNTER( input_bitrate, DERIVATIVE );
        INIT_COUNTER( demux_bitrate, DERIVATIVE );
        INIT_COUNTER( demux_corrupted, COUNTER );
        INIT_COUNTER( demux_discontinuity, COUNTER );
        INIT_COUNTER( played_abuffers, COUNTER );
        INIT_COUNTER( lost_abuffers, COUNTER );
        INIT_COUNTER( displayed_pictures, COUNTER );
        INIT_COUNTER( lost_pictures, COUNTER );
        INIT_COUNTER( decoded_audio, COUNTER );
        INIT_COUNTER( decoded_video, COUNTER );
        INIT_COUNTER( decoded_sub, COUNTER );
871 872 873
        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;
874
    }
875
}
876

877
#ifdef ENABLE_SOUT
878 879
static int InitSout( input_thread_t * p_input )
{
880 881
    if( p_input->b_preparsing )
        return VLC_SUCCESS;
882 883

    /* Find a usable sout and attach it to p_input */
884
    char *psz = var_GetNonEmptyString( p_input, "sout" );
885
    if( psz && strncasecmp( p_input->p->p_item->psz_uri, "vlc:", 4 ) )
886
    {
887
        p_input->p->p_sout  = input_resource_RequestSout( p_input->p->p_resource, NULL, psz );
888
        if( !p_input->p->p_sout )
Clément Stenac's avatar
Clément Stenac committed
889
        {
890 891 892 893 894
            input_ChangeState( p_input, ERROR_S );
            msg_Err( p_input, "cannot start stream output instance, " \
                              "aborting" );
            free( psz );
            return VLC_EGENERIC;
895
        }
896
        if( libvlc_stats( p_input ) )
897
        {
898 899 900
            INIT_COUNTER( sout_sent_packets, COUNTER );
            INIT_COUNTER( sout_sent_bytes, COUNTER );
            INIT_COUNTER( sout_send_bitrate, DERIVATIVE );
901
        }
902
    }
903
    else
904
    {
905
        input_resource_RequestSout( p_input->p->p_resource, NULL, NULL );
906
    }
907
    free( psz );
908

909 910
    return VLC_SUCCESS;
}
911
#endif
912

913 914
static void InitTitle( input_thread_t * p_input )
{
Laurent Aimar's avatar
Laurent Aimar committed
915
    input_source_t *p_master = &p_input->p->input;
916

Laurent Aimar's avatar
Laurent Aimar committed
917 918
    if( p_input->b_preparsing )
        return;
919

920
    vlc_mutex_lock( &p_input->p->p_item->lock );
921
    /* Create global title (from master) */
Laurent Aimar's avatar
Laurent Aimar committed
922 923 924 925
    p_input->p->i_title = p_master->i_title;
    p_input->p->title   = p_master->title;
    p_input->p->i_title_offset = p_master->i_title_offset;
    p_input->p->i_seekpoint_offset = p_master->i_seekpoint_offset;
926 927 928 929
    if( p_input->p->i_title > 0 )
    {
        /* Setup variables */
        input_ControlVarNavigation( p_input );
930
        input_SendEventTitle( p_input, 0 );
931 932 933
    }

    /* Global flag */
934
    p_input->p->b_can_pace_control    = p_master->b_can_pace_control;
Laurent Aimar's avatar
Laurent Aimar committed
935 936
    p_input->p->b_can_pause        = p_master->b_can_pause;
    p_input->p->b_can_rate_control = p_master->b_can_rate_control;
937
    vlc_mutex_unlock( &p_input->p->p_item->lock );
938
}
939

940 941 942
static void StartTitle( input_thread_t * p_input )
{
    vlc_value_t val;
943

944 945 946 947 948
    /* Start title/chapter */
    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 );
Laurent Aimar's avatar
Laurent Aimar committed
949

950 951 952 953 954
    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 );

Laurent Aimar's avatar
Laurent Aimar committed
955
    /* Start/stop/run time */
956 957 958 959 960 961
    p_input->p->i_start = (int64_t)(1000000.0
                                     * var_GetFloat( p_input, "start-time" ));
    p_input->p->i_stop  = (int64_t)(1000000.0
                                     * var_GetFloat( p_input, "stop-time" ));
    p_input->p->i_run   = (int64_t)(1000000.0
                                     * var_GetFloat( p_input, "run-time" ));
962
    if( p_input->p->i_run < 0 )
963
    {
964 965
        msg_Warn( p_input, "invalid run-time ignored" );
        p_input->p->i_run = 0;
Rafaël Carré's avatar
Rafaël Carré committed
966
    }
967

968
    if( p_input->p->i_start > 0 )
969
    {
970
        vlc_value_t s;
971

972 973
        msg_Dbg( p_input, "starting at time: %ds",
                 (int)( p_input->p->i_start / INT64_C(1000000) ) );
974

975 976
        s.i_time = p_input->p->i_start;
        input_ControlPush( p_input, INPUT_CONTROL_SET_TIME, &s );
977 978 979 980 981 982
    }
    if( p_input->p->i_stop > 0 && p_input->p->i_stop <= p_input->p->i_start )
    {
        msg_Warn( p_input, "invalid stop-time ignored" );
        p_input->p->i_stop = 0;
    }
983
    p_input->p->b_fast_seek = var_GetBool( p_input, "input-fast-seek" );
Laurent Aimar's avatar
Laurent Aimar committed
984
}
985

Laurent Aimar's avatar
Laurent Aimar committed
986 987
static void LoadSubtitles( input_thread_t *p_input )
{
988 989
    /* Load subtitles */
    /* Get fps and set it if not already set */
990 991
    const double f_fps = p_input->p->f_fps;
    if( f_fps > 1.0 )
992 993
    {
        float f_requested_fps;
994

995 996
        var_Create( p_input, "sub-original-fps", VLC_VAR_FLOAT );
        var_SetFloat( p_input, "sub-original-fps", f_fps );
997

Pierre d'Herbemont's avatar