input.c 105 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 "event.h"
40
#include "es_out.h"
41
#include "es_out_timeshift.h"
42
#include "access.h"
43
#include "demux.h"
44
#include "stream.h"
45

zorglub's avatar
zorglub committed
46 47
#include <vlc_sout.h>
#include "../stream_output/stream_output.h"
Sam Hocevar's avatar
 
Sam Hocevar committed
48

zorglub's avatar
zorglub committed
49 50 51
#include <vlc_interface.h>
#include <vlc_url.h>
#include <vlc_charset.h>
52
#include <vlc_strings.h>
53

54 55 56 57
#ifdef HAVE_SYS_STAT_H
#   include <sys/stat.h>
#endif

58
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
59
 * Local prototypes
60
 *****************************************************************************/
61 62
static void Destructor( input_thread_t * p_input );

63 64
static  void *Run            ( vlc_object_t *p_this );
static  void *RunAndDestroy  ( vlc_object_t *p_this );
Laurent Aimar's avatar
Laurent Aimar committed
65

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
66
static input_thread_t * Create  ( vlc_object_t *, input_item_t *,
67
                                  const char *, bool, sout_instance_t * );
68
static  int             Init    ( input_thread_t *p_input );
69
static void             WaitDie   ( input_thread_t *p_input );
70 71
static void             End     ( input_thread_t *p_input );
static void             MainLoop( input_thread_t *p_input );
Laurent Aimar's avatar
Laurent Aimar committed
72

73
static inline int ControlPopNoLock( input_thread_t *, int *, vlc_value_t *, mtime_t i_deadline );
Laurent Aimar's avatar
Laurent Aimar committed
74
static void       ControlReduce( input_thread_t * );
75
static bool Control( input_thread_t *, int, vlc_value_t );
76

77 78
static int  UpdateFromAccess( input_thread_t * );
static int  UpdateFromDemux( input_thread_t * );
Michel Kaempf's avatar
Michel Kaempf committed
79

80
static void MRLSections( input_thread_t *, char *, int *, int *, int *, int *);
81 82

static input_source_t *InputSourceNew( input_thread_t *);
Laurent Aimar's avatar
 
Laurent Aimar committed
83
static int  InputSourceInit( input_thread_t *, input_source_t *,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
84
                             const char *, const char *psz_forced_demux );
85
static void InputSourceClean( input_source_t * );
86 87
/* TODO */
//static void InputGetAttachments( input_thread_t *, input_source_t * );
88 89
static void SlaveDemux( input_thread_t *p_input );
static void SlaveSeek( input_thread_t *p_input );
90

91 92
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 );
93 94
static char *InputGetExtraFiles( input_thread_t *p_input,
                                 const char *psz_access, const char *psz_path );
95

96
static void DemuxMeta( input_thread_t *p_input, vlc_meta_t *p_meta, demux_t *p_demux );
97
static void AccessMeta( input_thread_t * p_input, vlc_meta_t *p_meta );
98 99 100
static void AppendAttachment( int *pi_attachment, input_attachment_t ***ppp_attachment,
                              int i_new, input_attachment_t **pp_new );

101 102
static void SubtitleAdd( input_thread_t *p_input, char *psz_subtitle, bool b_forced );

103 104
static void input_ChangeState( input_thread_t *p_input, int i_state ); /* TODO fix name */

105
/*****************************************************************************
106 107
 * 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
108
 *
Laurent Aimar's avatar
Laurent Aimar committed
109
 * XXX Do not forget to update vlc_input.h if you add new variables.
110
 *****************************************************************************/
111
static input_thread_t *Create( vlc_object_t *p_parent, input_item_t *p_item,
112
                               const char *psz_header, bool b_quick,
113
                               sout_instance_t *p_sout )
Michel Kaempf's avatar
Michel Kaempf committed
114
{
115
    static const char input_name[] = "input";
116
    input_thread_t *p_input = NULL;                 /* thread descriptor */
117 118
    vlc_value_t val;
    int i;
119

120
    /* Allocate descriptor */
121 122
    p_input = vlc_custom_create( p_parent, sizeof( *p_input ),
                                 VLC_OBJECT_INPUT, input_name );
123
    if( p_input == NULL )
124
        return NULL;
125 126 127 128 129 130

    /* 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 );
131 132 133

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

134 135 136 137 138 139 140
    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 );

141 142 143
    p_input->p = calloc( 1, sizeof( input_thread_private_t ) );
    if( !p_input->p )
        return NULL;
144 145 146

    /* One "randomly" selected input thread is responsible for computing
     * the global stats. Check if there is already someone doing this */
147
    if( p_input->p_libvlc->p_stats && !b_quick )
148
    {
149
        libvlc_priv_t *p_private = libvlc_priv( p_input->p_libvlc );
150
        vlc_mutex_lock( &p_input->p_libvlc->p_stats->lock );
151 152
        if( p_private->p_stats_computer == NULL )
            p_private->p_stats_computer = p_input;
153
        vlc_mutex_unlock( &p_input->p_libvlc->p_stats->lock );
154 155
    }

156
    p_input->b_preparsing = b_quick;
157
    p_input->psz_header = psz_header ? strdup( psz_header ) : NULL;
158

159
    /* Init events */
160 161 162
    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 );
163
    vlc_event_manager_register_event_type( p_em, vlc_InputSelectedStreamChanged );
164

Laurent Aimar's avatar
Laurent Aimar committed
165
    /* Init Common fields */
166 167
    p_input->b_eof = false;
    p_input->b_can_pace_control = true;
zorglub's avatar
zorglub committed
168
    p_input->p->i_start = 0;
169
    p_input->i_time     = 0;
zorglub's avatar
zorglub committed
170
    p_input->p->i_stop  = 0;
171
    p_input->p->i_run   = 0;
zorglub's avatar
zorglub committed
172
    p_input->p->i_title = 0;
173
    p_input->p->title = NULL;
zorglub's avatar
zorglub committed
174
    p_input->p->i_title_offset = p_input->p->i_seekpoint_offset = 0;
Laurent Aimar's avatar
Laurent Aimar committed
175
    p_input->i_state = INIT_S;
176
    p_input->p->i_rate = INPUT_RATE_DEFAULT;
177
    p_input->p->b_recording = false;
178 179
    TAB_INIT( p_input->p->i_bookmark, p_input->p->bookmark );
    TAB_INIT( p_input->p->i_attachment, p_input->p->attachment );
180 181
    p_input->p->p_es_out_display = NULL;
    p_input->p->p_es_out = NULL;
182
    p_input->p->p_sout   = NULL;
183
    p_input->p->b_out_pace_control = false;
Laurent Aimar's avatar
Laurent Aimar committed
184 185 186
    p_input->i_pts_delay = 0;

    /* Init Input fields */
Pierre's avatar
Pierre committed
187
    vlc_gc_incref( p_item ); /* Released in Destructor() */
zorglub's avatar
zorglub committed
188 189 190 191
    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;
192
    p_input->p->input.b_title_demux = false;
zorglub's avatar
zorglub committed
193 194 195
    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;
196 197 198 199
    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
200
    p_input->p->input.i_cr_average = 0;
201
    memset( &p_input->p->input_last_times, 0, sizeof(p_input->p->input_last_times) );
zorglub's avatar
zorglub committed
202

203
    vlc_mutex_lock( &p_item->lock );
204 205

    if( !p_item->p_stats )
206 207
        p_item->p_stats = stats_NewInputStats( p_input );
    vlc_mutex_unlock( &p_item->lock );
zorglub's avatar
zorglub committed
208

209
    /* No slave */
zorglub's avatar
zorglub committed
210 211
    p_input->p->i_slave = 0;
    p_input->p->slave   = NULL;
212

Laurent Aimar's avatar
Laurent Aimar committed
213
    /* Init control buffer */
214
    vlc_mutex_init( &p_input->p->lock_control );
215
    vlc_cond_init( &p_input->p->wait_control );
zorglub's avatar
zorglub committed
216
    p_input->p->i_control = 0;
217

gbazin's avatar
 
gbazin committed
218
    /* Parse input options */
219
    vlc_mutex_lock( &p_item->lock );
Pierre d'Herbemont's avatar
Pierre d'Herbemont committed
220
    assert( (int)p_item->optflagc == p_item->i_options );
221
    for( i = 0; i < p_item->i_options; i++ )
222 223
        var_OptionParse( VLC_OBJECT(p_input), p_item->ppsz_options[i],
                         !!(p_item->optflagv[i] & VLC_INPUT_OPTION_TRUSTED) );
224
    vlc_mutex_unlock( &p_item->lock );
gbazin's avatar
 
gbazin committed
225

Laurent Aimar's avatar
Laurent Aimar committed
226 227
    /* Create Object Variables for private use only */
    input_ConfigVarInit( p_input );
Michel Kaempf's avatar
Michel Kaempf committed
228

Laurent Aimar's avatar
Laurent Aimar committed
229
    /* Create Objects variables for public Get and Set */
230
    input_ControlVarInit( p_input );
231

232
    /* */
zorglub's avatar
zorglub committed
233
    p_input->p->input.i_cr_average = var_GetInteger( p_input, "cr-average" );
gbazin's avatar
gbazin committed
234

235
    if( !p_input->b_preparsing )
gbazin's avatar
gbazin committed
236
    {
237 238
        var_Get( p_input, "bookmarks", &val );
        if( val.psz_string )
gbazin's avatar
gbazin committed
239
        {
240 241 242 243
            /* 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
244
            {
hartman's avatar
hartman committed
245
                 seekpoint_t *p_seekpoint;
246 247 248 249 250 251 252 253
                 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
254 255

                 p_seekpoint = vlc_seekpoint_New();
256 257 258 259 260
                 while( (psz_end = strchr( psz_start, ',' ) ) )
                 {
                     *psz_end = 0;
                     if( !strncmp( psz_start, "name=", 5 ) )
                     {
261
                         p_seekpoint->psz_name = strdup(psz_start + 5);
262 263 264 265 266 267 268
                     }
                     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
269 270
                         p_seekpoint->i_time_offset = atoll(psz_start + 5) *
                                                        1000000;
271 272
                     }
                     psz_start = psz_end + 1;
gbazin's avatar
gbazin committed
273
                }
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
274
                msg_Dbg( p_input, "adding bookmark: %s, bytes=%"PRId64", time=%"PRId64,
275 276 277 278 279
                                  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
280
            }
281
            free( val.psz_string );
gbazin's avatar
gbazin committed
282 283 284
        }
    }

285
    /* Remove 'Now playing' info as it is probably outdated */
286
    input_item_SetNowPlaying( p_item, NULL );
287
    input_SendEventMeta( p_input );
288

289 290 291 292
    /* */
    if( p_input->b_preparsing )
        p_input->i_flags |= OBJECT_FLAGS_QUIET | OBJECT_FLAGS_NOINTERACT;

293 294 295 296
    /* */
    if( p_sout )
        p_input->p->p_sout = p_sout;

297
    memset( &p_input->p->counters, 0, sizeof( p_input->p->counters ) );
298
    vlc_mutex_init( &p_input->p->counters.counters_lock );
299

300 301 302
    /* Set the destructor when we are sure we are initialized */
    vlc_object_set_destructor( p_input, (vlc_destructor_t)Destructor );

303 304 305
    /* Attach only once we are ready */
    vlc_object_attach( p_input, p_parent );

306 307 308
    return p_input;
}

309 310 311 312
/**
 * Input destructor (called when the object's refcount reaches 0).
 */
static void Destructor( input_thread_t * p_input )
313
{
314 315 316 317 318 319
#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

320 321
    vlc_event_manager_fini( &p_input->p->event_manager );

322 323
    stats_TimerDump( p_input, STATS_TIMER_INPUT_LAUNCHING );
    stats_TimerClean( p_input, STATS_TIMER_INPUT_LAUNCHING );
324
#ifdef ENABLE_SOUT
325 326
    if( p_input->p->p_sout )
        sout_DeleteInstance( p_input->p->p_sout );
327
#endif
Pierre's avatar
Pierre committed
328 329
    vlc_gc_decref( p_input->p->input.p_item );

330 331
    vlc_mutex_destroy( &p_input->p->counters.counters_lock );

332
    vlc_cond_destroy( &p_input->p->wait_control );
333 334
    vlc_mutex_destroy( &p_input->p->lock_control );
    free( p_input->p );
335
}
336

337
/**
338 339
 * Initialize an input thread and run it. You will need to monitor the
 * thread to clean up after it is done
340 341 342 343 344 345 346
 *
 * \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 )
347
{
348
    return __input_CreateThreadExtended( p_parent, p_item, NULL, NULL );
349 350
}

351 352 353 354
/* */
input_thread_t *__input_CreateThreadExtended( vlc_object_t *p_parent,
                                              input_item_t *p_item,
                                              const char *psz_log, sout_instance_t *p_sout )
355
{
356
    input_thread_t *p_input;
357

358
    p_input = Create( p_parent, p_item, psz_log, false, p_sout );
359 360 361
    if( !p_input )
        return NULL;

Sam Hocevar's avatar
Sam Hocevar committed
362
    /* Create thread and wait for its readiness. */
Laurent Aimar's avatar
Laurent Aimar committed
363
    if( vlc_thread_create( p_input, "input", Run,
364
                           VLC_THREAD_PRIORITY_INPUT, false ) )
Michel Kaempf's avatar
Michel Kaempf committed
365
    {
366
        input_ChangeState( p_input, ERROR_S );
367
        msg_Err( p_input, "cannot create input thread" );
368 369
        vlc_object_detach( p_input );
        vlc_object_release( p_input );
370
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
371
    }
372

373
    return p_input;
Michel Kaempf's avatar
Michel Kaempf committed
374 375
}

376
/**
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
377
 * Initialize an input thread and run it. This thread will clean after itself,
378 379 380 381 382
 * 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 ?
383
 * \return an error code, VLC_SUCCESS on success
384
 */
385
int __input_Read( vlc_object_t *p_parent, input_item_t *p_item,
386
                   bool b_block )
387
{
388
    input_thread_t *p_input;
389

390
    p_input = Create( p_parent, p_item, NULL, false, NULL );
391
    if( !p_input )
392 393
        return VLC_EGENERIC;

394
    if( b_block )
395
    {
ivoire's avatar
ivoire committed
396
        RunAndDestroy( VLC_OBJECT(p_input) );
zorglub's avatar
zorglub committed
397
        return VLC_SUCCESS;
398
    }
399
    else
400
    {
401
        if( vlc_thread_create( p_input, "input", RunAndDestroy,
402
                               VLC_THREAD_PRIORITY_INPUT, false ) )
403
        {
404
            input_ChangeState( p_input, ERROR_S );
405
            msg_Err( p_input, "cannot create input thread" );
406
            vlc_object_release( p_input );
zorglub's avatar
zorglub committed
407
            return VLC_EGENERIC;
408
        }
409
    }
410
    return VLC_SUCCESS;
411
}
412

413 414 415 416 417 418 419 420 421 422
/**
 * 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 )
{
423
    input_thread_t *p_input;
424

425
    /* Allocate descriptor */
426
    p_input = Create( p_parent, p_item, NULL, true, NULL );
427 428 429
    if( !p_input )
        return VLC_EGENERIC;

430 431
    if( !Init( p_input ) )
        End( p_input );
432

433 434
    vlc_object_detach( p_input );
    vlc_object_release( p_input );
435 436 437 438

    return VLC_SUCCESS;
}

439 440 441 442 443
/**
 * Request a running input thread to stop and die
 *
 * \param the input thread to stop
 */
444
static void ObjectKillChildrens( input_thread_t *p_input, vlc_object_t *p_obj )
Michel Kaempf's avatar
Michel Kaempf committed
445
{
Laurent Aimar's avatar
Laurent Aimar committed
446 447
    vlc_list_t *p_list;
    int i;
448 449 450 451 452 453

    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;

454
    vlc_object_kill( p_obj );
455

456
    p_list = vlc_list_children( p_obj );
Laurent Aimar's avatar
Laurent Aimar committed
457
    for( i = 0; i < p_list->i_count; i++ )
458
        ObjectKillChildrens( p_input, p_list->p_values[i].p_object );
Laurent Aimar's avatar
Laurent Aimar committed
459
    vlc_list_release( p_list );
460 461 462 463 464 465
}
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 */
466
    ObjectKillChildrens( p_input, VLC_OBJECT(p_input) );
Michel Kaempf's avatar
Michel Kaempf committed
467

Laurent Aimar's avatar
Laurent Aimar committed
468
    input_ControlPush( p_input, INPUT_CONTROL_SET_DIE, NULL );
Sam Hocevar's avatar
 
Sam Hocevar committed
469 470
}

471
sout_instance_t *input_DetachSout( input_thread_t *p_input )
472
{
sebastien's avatar
sebastien committed
473
    assert( p_input->b_dead );
474 475 476 477
    sout_instance_t *p_sout = p_input->p->p_sout;
    vlc_object_detach( p_sout );
    p_input->p->p_sout = NULL;
    return p_sout;
478 479
}

480
/*****************************************************************************
Laurent Aimar's avatar
Laurent Aimar committed
481
 * Run: main thread loop
482 483
 * This is the "normal" thread that spawns the input processing chain,
 * reads the stream, cleans up and waits
484
 *****************************************************************************/
485
static void *Run( vlc_object_t *p_this )
Michel Kaempf's avatar
Michel Kaempf committed
486
{
ivoire's avatar
ivoire committed
487
    input_thread_t *p_input = (input_thread_t *)p_this;
488
    const int canc = vlc_savecancel();
489

490
    if( Init( p_input ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
491 492
    {
        /* If we failed, wait before we are killed, and exit */
493
        WaitDie( p_input );
494
        goto exit;
Sam Hocevar's avatar
 
Sam Hocevar committed
495
    }
Michel Kaempf's avatar
Michel Kaempf committed
496

497 498
    MainLoop( p_input );

499
    /* Wait until we are asked to die */
500
    if( !p_input->b_die )
501
        WaitDie( p_input );
502 503 504

    /* Clean up */
    End( p_input );
505 506 507

exit:
    p_input->b_dead = true;
508
    vlc_restorecancel( canc );
ivoire's avatar
ivoire committed
509
    return NULL;
510 511 512
}

/*****************************************************************************
513
 * RunAndDestroy: main thread loop
514 515 516
 * This is the "just forget me" thread that spawns the input processing chain,
 * reads the stream, cleans up and releases memory
 *****************************************************************************/
517
static void *RunAndDestroy( vlc_object_t *p_this )
518
{
ivoire's avatar
ivoire committed
519
    input_thread_t *p_input = (input_thread_t *)p_this;
520
    const int canc = vlc_savecancel();
521

522
    if( Init( p_input ) )
523
        goto exit;
524 525 526 527 528 529

    MainLoop( p_input );

    /* Clean up */
    End( p_input );

530
exit:
531
    /* Release memory */
532
    vlc_object_release( p_input );
533 534
    vlc_restorecancel( canc );
    return NULL;
535 536 537 538 539
}

/*****************************************************************************
 * Main loop: Fill buffers from access, and demux
 *****************************************************************************/
540 541 542 543 544 545

/**
 * 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 )
546
{
547
    int i_ret;
548

549
    *pb_changed = false;
550

551 552 553 554 555 556 557
    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
558
    {
559 560 561 562 563 564 565 566 567 568 569 570 571 572 573
        /* 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;
        }
    }
574

575 576 577 578 579 580
    if( i_ret == 0 )    /* EOF */
    {
        vlc_value_t repeat;

        var_Get( p_input, "input-repeat", &repeat );
        if( repeat.i_int == 0 )
581
        {
582 583 584 585 586 587 588 589
            /* 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;
590

591 592 593
            msg_Dbg( p_input, "repeating the same input (%d)",
                     repeat.i_int );
            if( repeat.i_int > 0 )
Laurent Aimar's avatar
Laurent Aimar committed
594
            {
595 596
                repeat.i_int--;
                var_Set( p_input, "input-repeat", repeat );
Laurent Aimar's avatar
Laurent Aimar committed
597
            }
598

599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614
            /* 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
615
            {
616 617 618
                val.i_time = p_input->p->i_start;
                input_ControlPush( p_input, INPUT_CONTROL_SET_TIME,
                                   &val );
619
            }
620
            else
Laurent Aimar's avatar
Laurent Aimar committed
621
            {
622 623 624
                val.f_float = 0.0;
                input_ControlPush( p_input, INPUT_CONTROL_SET_POSITION,
                                   &val );
Laurent Aimar's avatar
Laurent Aimar committed
625
            }
626

627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647
            /* */
            *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 )
{
648
    input_event_times_t ev;
649 650 651
    mtime_t i_es_out_delay;

    es_out_GetBuffering( p_input->p->p_es_out, &i_es_out_delay );
652 653 654 655

    ev.f_position = 0.0;
    ev.i_time = 0;
    ev.i_length = 0;
656 657

    /* update input status variables */
658 659 660
    if( demux_Control( p_input->p->input.p_demux,
                       DEMUX_GET_POSITION, &ev.f_position ) )
        ev.f_position = 0.0;
661

662 663 664 665 666 667 668
    if( demux_Control( p_input->p->input.p_demux,
                       DEMUX_GET_TIME, &ev.i_time ) )
        ev.i_time = 0;

    if( demux_Control( p_input->p->input.p_demux,
                       DEMUX_GET_LENGTH, &ev.i_length ) )
        ev.i_length = 0;
669

670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692
    if( ev.i_time > 0 )
    {
        ev.i_time -= i_es_out_delay;
        if( ev.i_time < 0 )
            ev.i_time = 0;
    }
    if( ev.i_length > 0 )
    {
        ev.f_position -= (double)i_es_out_delay / ev.i_length;
    }

    if( p_input->i_state == PAUSE_S )
    {
        input_event_times_t old = p_input->p->input_last_times;

        /* XXX We have a jitter because of PCR frequency/get time precision.
         * Hides it */
        if( llabs(ev.i_time - old.i_time) < CLOCK_FREQ )
            ev.i_time = old.i_time;
    }

    p_input->p->input_last_times = ev;

693
    input_SendEventTimes( p_input, &ev );
694 695 696 697 698 699 700 701 702 703 704 705 706 707 708
}

/**
 * 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 );
    }
709
    input_SendEventStatistics( p_input );
710 711 712 713 714 715 716 717 718
}

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

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

725
    while( vlc_object_alive( p_input ) && !p_input->b_error )
726 727 728 729
    {
        bool b_force_update;
        int i_type;
        vlc_value_t val;
730
        mtime_t i_current;
731
        mtime_t i_deadline;
732
        mtime_t i_wakeup;
733
        bool b_paused;
734

735 736
        /* Demux data */
        b_force_update = false;
737
        i_wakeup = 0;
738 739 740
        /* 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 */
741
        b_paused = p_input->i_state == PAUSE_S &&
742
                   !es_out_GetBuffering( p_input->p->p_es_out, NULL );
743 744

        if( !b_paused )
745
        {
746 747 748
            if( !p_input->p->input.b_eof )
            {
                MainLoopDemux( p_input, &b_force_update, &i_start_mdate );
749

750 751 752 753 754 755 756 757 758 759 760
                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;
            }
761
        }
762 763

        /* */
764 765
        do {
            i_deadline = i_wakeup;
766
            if( b_paused )
767 768 769 770 771 772 773 774
                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 );
775

776 777 778 779
                if( Control( p_input, i_type, val ) )
                    b_force_update = true;
            }
            vlc_mutex_unlock( &p_input->p->lock_control );
780

781 782 783 784 785 786 787 788 789 790 791 792 793
            /* 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);
            }
794 795 796 797

            /* Check if i_wakeup is still valid */
            if( i_wakeup != 0 )
            {
798
                mtime_t i_new_wakeup = es_out_GetWakeup( p_input->p->p_es_out );
799 800 801
                if( !i_new_wakeup )
                    i_wakeup = 0;
            }
802
        } while( i_current < i_wakeup );
Laurent Aimar's avatar
Laurent Aimar committed
803
    }
804

805
    if( !p_input->b_error )
806
        input_ChangeState( p_input, END_S );
807 808
}