git.sesse.net Git - vlc/blob - src/input/decoder.c

   1 /*****************************************************************************
   2  * decoder.c: Functions for the management of decoders
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *          Laurent Aimar <fenrir@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32 #include <assert.h>
  33
  34 #include <vlc_common.h>
  35
  36 #include <vlc_block.h>
  37 #include <vlc_vout.h>
  38 #include <vlc_aout.h>
  39 #include <vlc_sout.h>
  40 #include <vlc_codec.h>
  41 #include <vlc_osd.h>
  42
  43 #include <vlc_interface.h>
  44 #include "audio_output/aout_internal.h"
  45 #include "stream_output/stream_output.h"
  46 #include "input_internal.h"
  47 #include "clock.h"
  48 #include "decoder.h"
  49 #include "event.h"
  50
  51 #include "../video_output/vout_control.h"
  52
  53 static decoder_t *CreateDecoder( input_thread_t *, es_format_t *, int, sout_instance_t *p_sout );
  54 static void       DeleteDecoder( decoder_t * );
  55
  56 static void      *DecoderThread( vlc_object_t * );
  57 static void       DecoderProcess( decoder_t *, block_t * );
  58 static void       DecoderError( decoder_t *p_dec, block_t *p_block );
  59 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  60 static void       DecoderFlush( decoder_t * );
  61 static void       DecoderSignalBuffering( decoder_t *, bool );
  62 static void       DecoderFlushBuffering( decoder_t * );
  63
  64 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  65
  66 /* Buffers allocation callbacks for the decoders */
  67 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  68 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  69
  70 static picture_t *vout_new_buffer( decoder_t * );
  71 static void vout_del_buffer( decoder_t *, picture_t * );
  72 static void vout_link_picture( decoder_t *, picture_t * );
  73 static void vout_unlink_picture( decoder_t *, picture_t * );
  74
  75 static subpicture_t *spu_new_buffer( decoder_t * );
  76 static void spu_del_buffer( decoder_t *, subpicture_t * );
  77
  78 static es_format_t null_es_format;
  79
  80 struct decoder_owner_sys_t
  81 {
  82     int64_t         i_preroll_end;
  83
  84     input_thread_t  *p_input;
  85     input_clock_t   *p_clock;
  86     int             i_last_rate;
  87
  88     vout_thread_t   *p_spu_vout;
  89     int              i_spu_channel;
  90     int64_t          i_spu_order;
  91
  92     sout_instance_t         *p_sout;
  93     sout_packetizer_input_t *p_sout_input;
  94
  95     /* Some decoders require already packetized data (ie. not truncated) */
  96     decoder_t *p_packetizer;
  97
  98     /* Current format in use by the output */
  99     video_format_t video;
 100     audio_format_t audio;
 101     es_format_t    sout;
 102
 103     /* */
 104     bool           b_fmt_description;
 105     es_format_t    fmt_description;
 106
 107     /* fifo */
 108     block_fifo_t *p_fifo;
 109
 110     /* Lock for communication with decoder thread */
 111     vlc_mutex_t lock;
 112     vlc_cond_t  wait;
 113
 114     /* -- These variables need locking on write(only) -- */
 115     aout_instance_t *p_aout;
 116     aout_input_t    *p_aout_input;
 117
 118     vout_thread_t   *p_vout;
 119
 120     /* -- Theses variables need locking on read *and* write -- */
 121     /* */
 122     /* Pause */
 123     bool b_paused;
 124     struct
 125     {
 126         mtime_t i_date;
 127         int     i_ignore;
 128     } pause;
 129
 130     /* Buffering */
 131     bool b_buffering;
 132     struct
 133     {
 134         bool b_first;
 135         bool b_full;
 136         int  i_count;
 137
 138         picture_t     *p_picture;
 139         picture_t     **pp_picture_next;
 140
 141         subpicture_t  *p_subpic;
 142         subpicture_t  **pp_subpic_next;
 143
 144         aout_buffer_t *p_audio;
 145         aout_buffer_t **pp_audio_next;
 146
 147         block_t       *p_block;
 148         block_t       **pp_block_next;
 149     } buffer;
 150
 151     /* Flushing */
 152     bool b_flushing;
 153
 154     /* CC */
 155     struct
 156     {
 157         bool b_supported;
 158         bool pb_present[4];
 159         decoder_t *pp_decoder[4];
 160     } cc;
 161
 162     /* Delay */
 163     mtime_t i_ts_delay;
 164 };
 165
 166 #define DECODER_MAX_BUFFERING_COUNT (4)
 167 #define DECODER_MAX_BUFFERING_AUDIO_DURATION (AOUT_MAX_PREPARE_TIME)
 168 #define DECODER_MAX_BUFFERING_VIDEO_DURATION (1*CLOCK_FREQ)
 169
 170 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 171  * a bogus PTS and won't be displayed */
 172 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 173
 174 /* */
 175 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 176
 177
 178 /*****************************************************************************
 179  * Public functions
 180  *****************************************************************************/
 181 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 182 {
 183     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 184     if( !p_picture )
 185         msg_Warn( p_decoder, "can't get output picture" );
 186     return p_picture;
 187 }
 188 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 189 {
 190     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 191 }
 192 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 193 {
 194     p_decoder->pf_picture_link( p_decoder, p_picture );
 195 }
 196 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 197 {
 198     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 199 }
 200
 201 aout_buffer_t *decoder_NewAudioBuffer( decoder_t *p_decoder, int i_size )
 202 {
 203     if( !p_decoder->pf_aout_buffer_new )
 204         return NULL;
 205     return p_decoder->pf_aout_buffer_new( p_decoder, i_size );
 206 }
 207 void decoder_DeleteAudioBuffer( decoder_t *p_decoder, aout_buffer_t *p_buffer )
 208 {
 209     p_decoder->pf_aout_buffer_del( p_decoder, p_buffer );
 210 }
 211
 212 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder )
 213 {
 214     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder );
 215     if( !p_subpicture )
 216         msg_Warn( p_decoder, "can't get output subpicture" );
 217     return p_subpicture;
 218 }
 219 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 220 {
 221     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 222 }
 223
 224 /* decoder_GetInputAttachments:
 225  */
 226 int decoder_GetInputAttachments( decoder_t *p_dec,
 227                                  input_attachment_t ***ppp_attachment,
 228                                  int *pi_attachment )
 229 {
 230     if( !p_dec->pf_get_attachments )
 231         return VLC_EGENERIC;
 232
 233     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 234 }
 235 /* decoder_GetDisplayDate:
 236  */
 237 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 238 {
 239     if( !p_dec->pf_get_display_date )
 240         return 0;
 241
 242     return p_dec->pf_get_display_date( p_dec, i_ts );
 243 }
 244 /* decoder_GetDisplayRate:
 245  */
 246 int decoder_GetDisplayRate( decoder_t *p_dec )
 247 {
 248     if( !p_dec->pf_get_display_rate )
 249         return INPUT_RATE_DEFAULT;
 250
 251     return p_dec->pf_get_display_rate( p_dec );
 252 }
 253
 254 /**
 255  * Spawns a new decoder thread
 256  *
 257  * \param p_input the input thread
 258  * \param p_es the es descriptor
 259  * \return the spawned decoder object
 260  */
 261 decoder_t *input_DecoderNew( input_thread_t *p_input,
 262                              es_format_t *fmt, input_clock_t *p_clock, sout_instance_t *p_sout  )
 263 {
 264     decoder_t *p_dec = NULL;
 265     int i_priority;
 266
 267 #ifdef ENABLE_SOUT
 268     /* If we are in sout mode, search for packetizer module */
 269     if( p_sout )
 270     {
 271         /* Create the decoder configuration structure */
 272         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
 273         if( p_dec == NULL )
 274         {
 275             msg_Err( p_input, "could not create packetizer" );
 276             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 277                             _("VLC could not open the packetizer module.") );
 278             return NULL;
 279         }
 280     }
 281     else
 282 #endif
 283     {
 284         /* Create the decoder configuration structure */
 285         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
 286         if( p_dec == NULL )
 287         {
 288             msg_Err( p_input, "could not create decoder" );
 289             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 290                             _("VLC could not open the decoder module.") );
 291             return NULL;
 292         }
 293     }
 294
 295     if( !p_dec->p_module )
 296     {
 297         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 298
 299         DeleteDecoder( p_dec );
 300         vlc_object_release( p_dec );
 301         return NULL;
 302     }
 303
 304     p_dec->p_owner->p_clock = p_clock;
 305
 306     if( fmt->i_cat == AUDIO_ES )
 307         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 308     else
 309         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 310
 311     /* Spawn the decoder thread */
 312     if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 313                            i_priority, false ) )
 314     {
 315         msg_Err( p_dec, "cannot spawn decoder thread" );
 316         module_unneed( p_dec, p_dec->p_module );
 317         DeleteDecoder( p_dec );
 318         vlc_object_release( p_dec );
 319         return NULL;
 320     }
 321
 322     return p_dec;
 323 }
 324
 325 /**
 326  * Kills a decoder thread and waits until it's finished
 327  *
 328  * \param p_input the input thread
 329  * \param p_es the es descriptor
 330  * \return nothing
 331  */
 332 void input_DecoderDelete( decoder_t *p_dec )
 333 {
 334     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 335
 336     vlc_object_kill( p_dec );
 337
 338     /* Make sure we aren't paused/buffering/waiting anymore */
 339     vlc_mutex_lock( &p_owner->lock );
 340     p_owner->b_paused = false;
 341     p_owner->b_buffering = false;
 342     p_owner->b_flushing = true;
 343     vlc_cond_signal( &p_owner->wait );
 344     vlc_mutex_unlock( &p_owner->lock );
 345
 346     vlc_thread_join( p_dec );
 347     module_unneed( p_dec, p_dec->p_module );
 348
 349     /* */
 350     if( p_dec->p_owner->cc.b_supported )
 351     {
 352         int i;
 353         for( i = 0; i < 4; i++ )
 354             input_DecoderSetCcState( p_dec, false, i );
 355     }
 356
 357     /* Delete decoder configuration */
 358     DeleteDecoder( p_dec );
 359
 360     /* Delete the decoder */
 361     vlc_object_release( p_dec );
 362 }
 363
 364 /**
 365  * Put a block_t in the decoder's fifo.
 366  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 367  *
 368  * \param p_dec the decoder object
 369  * \param p_block the data block
 370  */
 371 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block )
 372 {
 373     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 374
 375     if( p_owner->p_input->p->b_out_pace_control )
 376     {
 377         /* The fifo is not consummed when buffering and so will
 378          * deadlock vlc.
 379          * There is no need to lock as b_buffering is never modify
 380          * inside decoder thread. */
 381         if( !p_owner->b_buffering )
 382             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 383     }
 384     else if( block_FifoSize( p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 385     {
 386         /* FIXME: ideally we would check the time amount of data
 387          * in the FIFO instead of its size. */
 388         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 389                   "consumed quickly enough), resetting fifo!" );
 390         block_FifoEmpty( p_owner->p_fifo );
 391     }
 392
 393     block_FifoPut( p_owner->p_fifo, p_block );
 394 }
 395
 396 bool input_DecoderIsEmpty( decoder_t * p_dec )
 397 {
 398     assert( !p_dec->p_owner->b_buffering );
 399
 400     /* FIXME that's not really true */
 401     return block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 402 }
 403
 404 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 405 {
 406     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 407     int i;
 408
 409     vlc_mutex_lock( &p_owner->lock );
 410     for( i = 0; i < 4; i++ )
 411         pb_present[i] =  p_owner->cc.pb_present[i];
 412     vlc_mutex_unlock( &p_owner->lock );
 413 }
 414 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 415 {
 416     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 417
 418     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 419
 420     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 421         return VLC_EGENERIC;
 422
 423     if( b_decode )
 424     {
 425         static const vlc_fourcc_t fcc[4] = {
 426             VLC_FOURCC('c', 'c', '1', ' '),
 427             VLC_FOURCC('c', 'c', '2', ' '),
 428             VLC_FOURCC('c', 'c', '3', ' '),
 429             VLC_FOURCC('c', 'c', '4', ' '),
 430         };
 431         decoder_t *p_cc;
 432         es_format_t fmt;
 433
 434         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 435         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_owner->p_sout );
 436         if( !p_cc )
 437         {
 438             msg_Err( p_dec, "could not create decoder" );
 439             intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
 440                             _("VLC could not open the decoder module.") );
 441             return VLC_EGENERIC;
 442         }
 443         else if( !p_cc->p_module )
 444         {
 445             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 446             DeleteDecoder( p_cc );
 447             vlc_object_release( p_cc );
 448             return VLC_EGENERIC;
 449         }
 450         p_cc->p_owner->p_clock = p_owner->p_clock;
 451
 452         vlc_mutex_lock( &p_owner->lock );
 453         p_owner->cc.pp_decoder[i_channel] = p_cc;
 454         vlc_mutex_unlock( &p_owner->lock );
 455     }
 456     else
 457     {
 458         decoder_t *p_cc;
 459
 460         vlc_mutex_lock( &p_owner->lock );
 461         p_cc = p_owner->cc.pp_decoder[i_channel];
 462         p_owner->cc.pp_decoder[i_channel] = NULL;
 463         vlc_mutex_unlock( &p_owner->lock );
 464
 465         if( p_cc )
 466         {
 467             vlc_object_kill( p_cc );
 468             module_unneed( p_cc, p_cc->p_module );
 469             DeleteDecoder( p_cc );
 470             vlc_object_release( p_cc );
 471         }
 472     }
 473     return VLC_SUCCESS;
 474 }
 475 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 476 {
 477     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 478
 479     *pb_decode = false;
 480     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 481         return VLC_EGENERIC;
 482
 483     vlc_mutex_lock( &p_owner->lock );
 484     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 485     vlc_mutex_unlock( &p_owner->lock );
 486     return VLC_EGENERIC;
 487 }
 488
 489 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 490 {
 491     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 492
 493     vlc_mutex_lock( &p_owner->lock );
 494
 495     assert( !p_owner->b_paused || !b_paused );
 496
 497     p_owner->b_paused = b_paused;
 498     p_owner->pause.i_date = i_date;
 499     p_owner->pause.i_ignore = 0;
 500     vlc_cond_signal( &p_owner->wait );
 501
 502     DecoderOutputChangePause( p_dec, b_paused, i_date );
 503
 504     vlc_mutex_unlock( &p_owner->lock );
 505 }
 506
 507 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 508 {
 509     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 510
 511     vlc_mutex_lock( &p_owner->lock );
 512     p_owner->i_ts_delay = i_delay;
 513     vlc_mutex_unlock( &p_owner->lock );
 514 }
 515
 516 void input_DecoderStartBuffering( decoder_t *p_dec )
 517 {
 518     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 519
 520     vlc_mutex_lock( &p_owner->lock );
 521
 522     DecoderFlush( p_dec );
 523
 524     p_owner->buffer.b_first = true;
 525     p_owner->buffer.b_full = false;
 526     p_owner->buffer.i_count = 0;
 527
 528     assert( !p_owner->buffer.p_picture && !p_owner->buffer.p_subpic &&
 529             !p_owner->buffer.p_audio && !p_owner->buffer.p_block );
 530
 531     p_owner->buffer.p_picture = NULL;
 532     p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
 533
 534     p_owner->buffer.p_subpic = NULL;
 535     p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
 536
 537     p_owner->buffer.p_audio = NULL;
 538     p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
 539
 540     p_owner->buffer.p_block = NULL;
 541     p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
 542
 543
 544     p_owner->b_buffering = true;
 545
 546     vlc_cond_signal( &p_owner->wait );
 547
 548     vlc_mutex_unlock( &p_owner->lock );
 549 }
 550
 551 void input_DecoderStopBuffering( decoder_t *p_dec )
 552 {
 553     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 554
 555     vlc_mutex_lock( &p_owner->lock );
 556
 557     p_owner->b_buffering = false;
 558
 559     vlc_cond_signal( &p_owner->wait );
 560
 561     vlc_mutex_unlock( &p_owner->lock );
 562 }
 563
 564 void input_DecoderWaitBuffering( decoder_t *p_dec )
 565 {
 566     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 567
 568     vlc_mutex_lock( &p_owner->lock );
 569
 570     while( vlc_object_alive( p_dec ) && p_owner->b_buffering && !p_owner->buffer.b_full )
 571     {
 572         block_FifoWake( p_owner->p_fifo );
 573         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 574     }
 575
 576     vlc_mutex_unlock( &p_owner->lock );
 577 }
 578
 579 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 580 {
 581     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 582
 583     *pi_duration = 0;
 584
 585     vlc_mutex_lock( &p_owner->lock );
 586     if( p_dec->fmt_in.i_cat == VIDEO_ES )
 587     {
 588         if( p_owner->b_paused && p_owner->p_vout )
 589         {
 590             vout_NextPicture( p_owner->p_vout, pi_duration );
 591             p_owner->pause.i_ignore++;
 592             vlc_cond_signal( &p_owner->wait );
 593         }
 594     }
 595     else
 596     {
 597         /* TODO subtitle should not be flushed */
 598         DecoderFlush( p_dec );
 599     }
 600     vlc_mutex_unlock( &p_owner->lock );
 601 }
 602
 603 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt )
 604 {
 605     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 606     bool b_changed;
 607
 608     vlc_mutex_lock( &p_owner->lock );
 609     b_changed = p_owner->b_fmt_description;
 610     if( b_changed )
 611     {
 612         if( p_fmt )
 613             es_format_Copy( p_fmt, &p_owner->fmt_description );
 614         p_owner->b_fmt_description = false;
 615     }
 616     vlc_mutex_unlock( &p_owner->lock );
 617     return b_changed;
 618 }
 619
 620 /*****************************************************************************
 621  * Internal functions
 622  *****************************************************************************/
 623 static int DecoderGetInputAttachments( decoder_t *p_dec,
 624                                        input_attachment_t ***ppp_attachment,
 625                                        int *pi_attachment )
 626 {
 627     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 628                           ppp_attachment, pi_attachment );
 629 }
 630 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 631 {
 632     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 633
 634     vlc_mutex_lock( &p_owner->lock );
 635     if( p_owner->b_buffering || p_owner->b_paused )
 636         i_ts = 0;
 637     vlc_mutex_unlock( &p_owner->lock );
 638
 639     if( !p_owner->p_clock || !i_ts )
 640         return i_ts;
 641
 642     return input_clock_GetTS( p_owner->p_clock, NULL, p_owner->p_input->i_pts_delay, i_ts );
 643 }
 644 static int DecoderGetDisplayRate( decoder_t *p_dec )
 645 {
 646     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 647
 648     if( !p_owner->p_clock )
 649         return INPUT_RATE_DEFAULT;
 650     return input_clock_GetRate( p_owner->p_clock );
 651 }
 652
 653 /* */
 654 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 655 {
 656     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 657              "VLC probably does not support this sound or video format.",
 658              (char*)&codec );
 659     intf_UserFatal( p_dec, false, _("No suitable decoder module"),
 660                     _("VLC does not support the audio or video format \"%4.4s\". "
 661                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 662 }
 663
 664
 665 /**
 666  * Create a decoder object
 667  *
 668  * \param p_input the input thread
 669  * \param p_es the es descriptor
 670  * \param i_object_type Object type as define in include/vlc_objects.h
 671  * \return the decoder object
 672  */
 673 static decoder_t * CreateDecoder( input_thread_t *p_input,
 674                                   es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
 675 {
 676     decoder_t *p_dec;
 677     decoder_owner_sys_t *p_owner;
 678     int i;
 679
 680     p_dec = vlc_object_create( p_input, i_object_type );
 681     if( p_dec == NULL )
 682         return NULL;
 683
 684     p_dec->pf_decode_audio = NULL;
 685     p_dec->pf_decode_video = NULL;
 686     p_dec->pf_decode_sub = NULL;
 687     p_dec->pf_get_cc = NULL;
 688     p_dec->pf_packetize = NULL;
 689
 690     /* Initialize the decoder fifo */
 691     p_dec->p_module = NULL;
 692
 693     memset( &null_es_format, 0, sizeof(es_format_t) );
 694     es_format_Copy( &p_dec->fmt_in, fmt );
 695     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 696
 697     /* Allocate our private structure for the decoder */
 698     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 699     if( p_dec->p_owner == NULL )
 700     {
 701         vlc_object_release( p_dec );
 702         return NULL;
 703     }
 704     p_dec->p_owner->i_preroll_end = -1;
 705     p_dec->p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 706     p_dec->p_owner->p_input = p_input;
 707     p_dec->p_owner->p_aout = NULL;
 708     p_dec->p_owner->p_aout_input = NULL;
 709     p_dec->p_owner->p_vout = NULL;
 710     p_dec->p_owner->p_spu_vout = NULL;
 711     p_dec->p_owner->i_spu_channel = 0;
 712     p_dec->p_owner->i_spu_order = 0;
 713     p_dec->p_owner->p_sout = p_sout;
 714     p_dec->p_owner->p_sout_input = NULL;
 715     p_dec->p_owner->p_packetizer = NULL;
 716
 717     /* decoder fifo */
 718     if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
 719     {
 720         free( p_dec->p_owner );
 721         vlc_object_release( p_dec );
 722         return NULL;
 723     }
 724
 725     /* Set buffers allocation callbacks for the decoders */
 726     p_dec->pf_aout_buffer_new = aout_new_buffer;
 727     p_dec->pf_aout_buffer_del = aout_del_buffer;
 728     p_dec->pf_vout_buffer_new = vout_new_buffer;
 729     p_dec->pf_vout_buffer_del = vout_del_buffer;
 730     p_dec->pf_picture_link    = vout_link_picture;
 731     p_dec->pf_picture_unlink  = vout_unlink_picture;
 732     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 733     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 734     /* */
 735     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 736     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 737     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 738
 739     vlc_object_attach( p_dec, p_input );
 740
 741     /* Find a suitable decoder/packetizer module */
 742     if( i_object_type == VLC_OBJECT_DECODER )
 743         p_dec->p_module = module_need( p_dec, "decoder", "$codec", 0 );
 744     else
 745         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", 0 );
 746
 747     /* Check if decoder requires already packetized data */
 748     if( i_object_type == VLC_OBJECT_DECODER &&
 749         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 750     {
 751         p_dec->p_owner->p_packetizer =
 752             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 753         if( p_dec->p_owner->p_packetizer )
 754         {
 755             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 756                             &p_dec->fmt_in );
 757
 758             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 759                             &null_es_format );
 760
 761             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 762
 763             p_dec->p_owner->p_packetizer->p_module =
 764                 module_need( p_dec->p_owner->p_packetizer,
 765                              "packetizer", "$packetizer", 0 );
 766
 767             if( !p_dec->p_owner->p_packetizer->p_module )
 768             {
 769                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 770                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 771                 vlc_object_release( p_dec->p_owner->p_packetizer );
 772             }
 773         }
 774     }
 775
 776     /* Copy ourself the input replay gain */
 777     if( fmt->i_cat == AUDIO_ES )
 778     {
 779         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 780         {
 781             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 782             {
 783                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 784                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 785             }
 786             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 787             {
 788                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 789                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 790             }
 791         }
 792     }
 793
 794     /* */
 795     vlc_mutex_init( &p_owner->lock );
 796     vlc_cond_init( &p_owner->wait );
 797
 798     p_owner->b_fmt_description = false;
 799     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 800
 801     p_owner->b_paused = false;
 802     p_owner->pause.i_date = 0;
 803     p_owner->pause.i_ignore = 0;
 804
 805     p_owner->b_buffering = false;
 806     p_owner->buffer.b_first = true;
 807     p_owner->buffer.b_full = false;
 808     p_owner->buffer.i_count = 0;
 809     p_owner->buffer.p_picture = NULL;
 810     p_owner->buffer.p_subpic = NULL;
 811     p_owner->buffer.p_audio = NULL;
 812     p_owner->buffer.p_block = NULL;
 813
 814     p_owner->b_flushing = false;
 815
 816     /* */
 817     p_owner->cc.b_supported = false;
 818     if( i_object_type == VLC_OBJECT_DECODER )
 819     {
 820         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 821             p_owner->cc.b_supported = true;
 822         if( p_dec->pf_get_cc )
 823             p_owner->cc.b_supported = true;
 824     }
 825
 826     for( i = 0; i < 4; i++ )
 827     {
 828         p_owner->cc.pb_present[i] = false;
 829         p_owner->cc.pp_decoder[i] = NULL;
 830     }
 831     p_owner->i_ts_delay = 0;
 832     return p_dec;
 833 }
 834
 835 /**
 836  * The decoding main loop
 837  *
 838  * \param p_dec the decoder
 839  */
 840 static void *DecoderThread( vlc_object_t *p_this )
 841 {
 842     decoder_t *p_dec = (decoder_t *)p_this;
 843     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 844
 845     /* The decoder's main loop */
 846     for( ;; )
 847     {
 848         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 849         /* Make sure there is no cancellation point other than this one^^.
 850          * If you need one, be sure to push cleanup of p_block. */
 851         DecoderSignalBuffering( p_dec, p_block == NULL );
 852
 853         if( p_block )
 854         {
 855             int canc = vlc_savecancel();
 856
 857             if( p_dec->b_error )
 858                 DecoderError( p_dec, p_block );
 859             else
 860                 DecoderProcess( p_dec, p_block );
 861
 862             vlc_restorecancel( canc );
 863         }
 864     }
 865
 866     DecoderSignalBuffering( p_dec, true );
 867     return NULL;
 868 }
 869
 870 static void DecoderFlush( decoder_t *p_dec )
 871 {
 872     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 873     block_t *p_null;
 874
 875     vlc_assert_locked( &p_owner->lock );
 876
 877     /* Empty the fifo */
 878     block_FifoEmpty( p_owner->p_fifo );
 879
 880     /* Monitor for flush end */
 881     p_owner->b_flushing = true;
 882     vlc_cond_signal( &p_owner->wait );
 883
 884     /* Send a special block */
 885     p_null = block_New( p_dec, 128 );
 886     if( !p_null )
 887         return;
 888     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 889     p_null->i_flags |= BLOCK_FLAG_CORE_FLUSH;
 890     if( !p_dec->fmt_in.b_packetized )
 891         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 892     memset( p_null->p_buffer, 0, p_null->i_buffer );
 893
 894     input_DecoderDecode( p_dec, p_null );
 895
 896     /* */
 897     while( vlc_object_alive( p_dec ) && p_owner->b_flushing )
 898         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 899 }
 900
 901 static void DecoderSignalFlushed( decoder_t *p_dec )
 902 {
 903     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 904
 905     vlc_mutex_lock( &p_owner->lock );
 906
 907     if( p_owner->b_flushing )
 908     {
 909         p_owner->b_flushing = false;
 910         vlc_cond_signal( &p_owner->wait );
 911     }
 912
 913     vlc_mutex_unlock( &p_owner->lock );
 914 }
 915
 916 static void DecoderSignalBuffering( decoder_t *p_dec, bool b_full )
 917 {
 918     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 919
 920     vlc_mutex_lock( &p_owner->lock );
 921
 922     if( p_owner->b_buffering )
 923     {
 924         if( b_full )
 925             p_owner->buffer.b_full = true;
 926         vlc_cond_signal( &p_owner->wait );
 927     }
 928
 929     vlc_mutex_unlock( &p_owner->lock );
 930 }
 931
 932 static bool DecoderIsFlushing( decoder_t *p_dec )
 933 {
 934     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 935     bool b_flushing;
 936
 937     vlc_mutex_lock( &p_owner->lock );
 938
 939     b_flushing = p_owner->b_flushing;
 940
 941     vlc_mutex_unlock( &p_owner->lock );
 942
 943     return b_flushing;
 944 }
 945
 946 static void DecoderWaitUnblock( decoder_t *p_dec, bool *pb_reject )
 947 {
 948     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 949
 950     vlc_assert_locked( &p_owner->lock );
 951
 952     while( !p_owner->b_flushing )
 953     {
 954         if( p_owner->b_paused )
 955         {
 956             if( p_owner->b_buffering && !p_owner->buffer.b_full )
 957                 break;
 958             if( p_owner->pause.i_ignore > 0 )
 959             {
 960                 p_owner->pause.i_ignore--;
 961                 break;
 962             }
 963         }
 964         else
 965         {
 966             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
 967                 break;
 968         }
 969         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 970     }
 971
 972     if( pb_reject )
 973         *pb_reject = p_owner->b_flushing;
 974 }
 975
 976 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 977 {
 978     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 979
 980     vlc_assert_locked( &p_owner->lock );
 981
 982     /* XXX only audio and video output have to be paused.
 983      * - for sout it is useless
 984      * - for subs, it is done by the vout
 985      */
 986     if( p_dec->fmt_in.i_cat == AUDIO_ES )
 987     {
 988         if( p_owner->p_aout && p_owner->p_aout_input )
 989             aout_DecChangePause( p_owner->p_aout, p_owner->p_aout_input,
 990                                  b_paused, i_date );
 991     }
 992     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 993     {
 994         if( p_owner->p_vout )
 995             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
 996     }
 997 }
 998 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 999 {
1000     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1001         *pi_preroll = INT64_MAX;
1002     else if( p->i_pts > 0 )
1003         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1004     else if( p->i_dts > 0 )
1005         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1006 }
1007
1008 static mtime_t DecoderTeletextFixTs( mtime_t i_ts, mtime_t i_ts_delay )
1009 {
1010     mtime_t current_date = mdate();
1011
1012     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
1013     if( !i_ts || i_ts > current_date + 10000000 || i_ts < current_date )
1014     {
1015         /* ETSI EN 300 472 Annex A : do not take into account the PTS
1016          * for teletext streams. */
1017         return current_date + 400000 + i_ts_delay;
1018     }
1019     return i_ts;
1020 }
1021
1022 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1023                           mtime_t *pi_duration, int *pi_rate, mtime_t *pi_delay, bool b_telx )
1024 {
1025     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1026     input_clock_t   *p_clock = p_owner->p_clock;
1027     int i_rate = 0;
1028
1029     vlc_assert_locked( &p_owner->lock );
1030
1031     const mtime_t i_ts_delay = p_owner->p_input->i_pts_delay;
1032     const mtime_t i_es_delay = p_owner->i_ts_delay;
1033
1034     if( p_clock )
1035     {
1036         const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1037
1038         if( *pi_ts0 > 0 )
1039             *pi_ts0 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1040                                          *pi_ts0 + i_es_delay );
1041         if( pi_ts1 && *pi_ts1 > 0 )
1042             *pi_ts1 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1043                                          *pi_ts1 + i_es_delay );
1044
1045         /* Do not create ephemere data because of rounding errors */
1046         if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1047             *pi_ts1 += 1;
1048
1049         if( i_rate <= 0 )
1050             i_rate = input_clock_GetRate( p_clock );
1051
1052         if( pi_duration )
1053             *pi_duration = ( *pi_duration * i_rate +
1054                                     INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
1055
1056         if( pi_rate )
1057             *pi_rate = i_rate;
1058
1059         if( b_telx )
1060         {
1061             *pi_ts0 = DecoderTeletextFixTs( *pi_ts0, i_ts_delay );
1062             if( pi_ts1 && *pi_ts1 <= 0 )
1063                 *pi_ts1 = *pi_ts0;
1064         }
1065     }
1066     if( pi_delay )
1067     {
1068         const int r = i_rate > 0 ? i_rate : INPUT_RATE_DEFAULT;
1069         *pi_delay = i_ts_delay + i_es_delay * r / INPUT_RATE_DEFAULT;
1070     }
1071 }
1072
1073 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1074                               int *pi_played_sum, int *pi_lost_sum )
1075 {
1076     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1077     aout_instance_t *p_aout = p_owner->p_aout;
1078     aout_input_t    *p_aout_input = p_owner->p_aout_input;
1079
1080     /* */
1081     if( p_audio->start_date <= 0 )
1082     {
1083         msg_Warn( p_dec, "non-dated audio buffer received" );
1084         *pi_lost_sum += 1;
1085         aout_BufferFree( p_audio );
1086         return;
1087     }
1088
1089     /* */
1090     vlc_mutex_lock( &p_owner->lock );
1091
1092     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1093     {
1094         p_audio->p_next = NULL;
1095
1096         *p_owner->buffer.pp_audio_next = p_audio;
1097         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1098
1099         p_owner->buffer.i_count++;
1100         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1101             p_audio->start_date - p_owner->buffer.p_audio->start_date > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1102         {
1103             p_owner->buffer.b_full = true;
1104             vlc_cond_signal( &p_owner->wait );
1105         }
1106     }
1107
1108     for( ;; )
1109     {
1110         bool b_has_more = false;
1111         bool b_reject;
1112         DecoderWaitUnblock( p_dec, &b_reject );
1113
1114         if( p_owner->b_buffering )
1115         {
1116             vlc_mutex_unlock( &p_owner->lock );
1117             return;
1118         }
1119
1120         /* */
1121         if( p_owner->buffer.p_audio )
1122         {
1123             p_audio = p_owner->buffer.p_audio;
1124
1125             p_owner->buffer.p_audio = p_audio->p_next;
1126             p_owner->buffer.i_count--;
1127
1128             b_has_more = p_owner->buffer.p_audio != NULL;
1129             if( !b_has_more )
1130                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1131         }
1132
1133         /* */
1134         int i_rate = INPUT_RATE_DEFAULT;
1135         mtime_t i_delay;
1136
1137         DecoderFixTs( p_dec, &p_audio->start_date, &p_audio->end_date, NULL,
1138                       &i_rate, &i_delay, false );
1139
1140         vlc_mutex_unlock( &p_owner->lock );
1141
1142         /* */
1143         const mtime_t i_max_date = mdate() + i_delay + AOUT_MAX_ADVANCE_TIME;
1144
1145         if( !p_aout || !p_aout_input ||
1146             p_audio->start_date <= 0 || p_audio->start_date > i_max_date ||
1147             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1148             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1149             b_reject = true;
1150
1151         /* Do not wait against unprotected date */
1152         const mtime_t i_deadline = p_audio->start_date - AOUT_MAX_PREPARE_TIME;
1153         while( !b_reject && i_deadline > mdate() )
1154         {
1155             vlc_mutex_lock( &p_owner->lock );
1156             if( p_owner->b_flushing || p_dec->b_die )
1157             {
1158                 b_reject = true;
1159                 vlc_mutex_unlock( &p_owner->lock );
1160                 break;
1161             }
1162             vlc_cond_timedwait( &p_owner->wait, &p_owner->lock, i_deadline );
1163             vlc_mutex_unlock( &p_owner->lock );
1164         }
1165
1166         if( !b_reject )
1167         {
1168             if( !aout_DecPlay( p_aout, p_aout_input, p_audio, i_rate ) )
1169                 *pi_played_sum += 1;
1170             *pi_lost_sum += aout_DecGetResetLost( p_aout, p_aout_input );
1171         }
1172         else
1173         {
1174             if( p_audio->start_date <= 0 )
1175             {
1176                 msg_Warn( p_dec, "non-dated audio buffer received" );
1177             }
1178             else if( p_audio->start_date > i_max_date )
1179             {
1180                 msg_Warn( p_aout, "received buffer in the future (%"PRId64")",
1181                           p_audio->start_date - mdate() );
1182             }
1183             *pi_lost_sum += 1;
1184             aout_BufferFree( p_audio );
1185         }
1186
1187         if( !b_has_more )
1188             break;
1189
1190         vlc_mutex_lock( &p_owner->lock );
1191         if( !p_owner->buffer.p_audio )
1192         {
1193             vlc_mutex_unlock( &p_owner->lock );
1194             break;
1195         }
1196     }
1197 }
1198
1199 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1200 {
1201     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1202     input_thread_t  *p_input = p_owner->p_input;
1203     aout_buffer_t   *p_aout_buf;
1204     int i_decoded = 0;
1205     int i_lost = 0;
1206     int i_played = 0;
1207
1208     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1209     {
1210         aout_instance_t *p_aout = p_owner->p_aout;
1211         aout_input_t    *p_aout_input = p_owner->p_aout_input;
1212         int i_lost = 0;
1213         int i_played;
1214
1215         if( p_dec->b_die )
1216         {
1217             /* It prevent freezing VLC in case of broken decoder */
1218             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1219             if( p_block )
1220                 block_Release( p_block );
1221             break;
1222         }
1223         i_decoded++;
1224
1225         if( p_aout_buf->start_date < p_owner->i_preroll_end )
1226         {
1227             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1228             continue;
1229         }
1230
1231         if( p_owner->i_preroll_end > 0 )
1232         {
1233             msg_Dbg( p_dec, "End of audio preroll" );
1234             if( p_owner->p_aout && p_owner->p_aout_input )
1235                 aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1236             /* */
1237             p_owner->i_preroll_end = -1;
1238         }
1239
1240         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1241     }
1242
1243     /* Update ugly stat */
1244     if( i_decoded > 0 || i_lost > 0 || i_played > 0 )
1245     {
1246         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1247
1248         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_abuffers,
1249                              i_lost, NULL );
1250         stats_UpdateInteger( p_dec, p_input->p->counters.p_played_abuffers,
1251                              i_played, NULL );
1252         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio,
1253                              i_decoded, NULL );
1254
1255         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1256     }
1257 }
1258 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1259 {
1260     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1261     block_t *p_cc;
1262     bool pb_present[4];
1263     int i;
1264     int i_cc_decoder;
1265
1266     assert( p_dec_cc->pf_get_cc != NULL );
1267
1268     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1269     if( !p_owner->cc.b_supported )
1270         return;
1271
1272     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1273     if( !p_cc )
1274         return;
1275
1276     vlc_mutex_lock( &p_owner->lock );
1277     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1278     {
1279         p_owner->cc.pb_present[i] |= pb_present[i];
1280         if( p_owner->cc.pp_decoder[i] )
1281             i_cc_decoder++;
1282     }
1283
1284     for( i = 0; i < 4; i++ )
1285     {
1286         if( !p_owner->cc.pp_decoder[i] )
1287             continue;
1288
1289         if( i_cc_decoder > 1 )
1290             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1291         else
1292             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1293         i_cc_decoder--;
1294     }
1295     vlc_mutex_unlock( &p_owner->lock );
1296 }
1297
1298 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1299                               int *pi_played_sum, int *pi_lost_sum )
1300 {
1301     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1302     vout_thread_t  *p_vout = p_owner->p_vout;
1303     bool b_first_buffered;
1304
1305     if( p_picture->date <= 0 )
1306     {
1307         msg_Warn( p_vout, "non-dated video buffer received" );
1308         *pi_lost_sum += 1;
1309         vout_DropPicture( p_vout, p_picture );
1310         return;
1311     }
1312
1313     /* */
1314     vlc_mutex_lock( &p_owner->lock );
1315
1316     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1317     {
1318         p_picture->p_next = NULL;
1319
1320         *p_owner->buffer.pp_picture_next = p_picture;
1321         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1322
1323         p_owner->buffer.i_count++;
1324         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1325             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1326         {
1327             p_owner->buffer.b_full = true;
1328             vlc_cond_signal( &p_owner->wait );
1329         }
1330     }
1331     b_first_buffered = p_owner->buffer.p_picture != NULL;
1332
1333     for( ;; b_first_buffered = false )
1334     {
1335         bool b_has_more = false;
1336
1337         bool b_reject;
1338
1339         DecoderWaitUnblock( p_dec, &b_reject );
1340
1341         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1342         {
1343             vlc_mutex_unlock( &p_owner->lock );
1344             return;
1345         }
1346         bool b_buffering_first = p_owner->b_buffering;
1347
1348         /* */
1349         if( p_owner->buffer.p_picture )
1350         {
1351             p_picture = p_owner->buffer.p_picture;
1352
1353             p_owner->buffer.p_picture = p_picture->p_next;
1354             p_owner->buffer.i_count--;
1355
1356             b_has_more = p_owner->buffer.p_picture != NULL;
1357             if( !b_has_more )
1358                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1359         }
1360
1361         /* */
1362         int i_rate = INPUT_RATE_DEFAULT;
1363         mtime_t i_delay;
1364
1365         if( b_buffering_first )
1366         {
1367             assert( p_owner->buffer.b_first );
1368             assert( !p_owner->buffer.i_count );
1369             msg_Dbg( p_dec, "Received first picture" );
1370             p_owner->buffer.b_first = false;
1371             p_picture->b_force = true;
1372             i_delay = 0;
1373             if( p_owner->p_clock )
1374                 i_rate = input_clock_GetRate( p_owner->p_clock );
1375         }
1376         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1377                       &i_rate, &i_delay, false );
1378
1379         vlc_mutex_unlock( &p_owner->lock );
1380
1381         /* */
1382         const mtime_t i_max_date = mdate() + i_delay + DECODER_BOGUS_VIDEO_DELAY;
1383
1384         if( !p_picture->b_force && ( p_picture->date <= 0 || p_picture->date >= i_max_date ) )
1385             b_reject = true;
1386
1387         if( !b_reject )
1388         {
1389             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1390             {
1391                 /* Be sure to not display old picture after our own */
1392                 vout_Flush( p_vout, p_picture->date );
1393                 p_owner->i_last_rate = i_rate;
1394             }
1395             vout_DisplayPicture( p_vout, p_picture );
1396         }
1397         else
1398         {
1399             if( p_picture->date <= 0 )
1400             {
1401                 msg_Warn( p_vout, "non-dated video buffer received" );
1402             }
1403             else
1404             {
1405                 msg_Warn( p_vout, "early picture skipped (%"PRId64")",
1406                           p_picture->date - mdate() );
1407             }
1408             *pi_lost_sum += 1;
1409             vout_DropPicture( p_vout, p_picture );
1410         }
1411         int i_tmp_display;
1412         int i_tmp_lost;
1413         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1414
1415         *pi_played_sum += i_tmp_display;
1416         *pi_lost_sum += i_tmp_lost;
1417
1418         if( !b_has_more || b_buffering_first )
1419             break;
1420
1421         vlc_mutex_lock( &p_owner->lock );
1422         if( !p_owner->buffer.p_picture )
1423         {
1424             vlc_mutex_unlock( &p_owner->lock );
1425             break;
1426         }
1427     }
1428 }
1429
1430 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1431 {
1432     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1433     input_thread_t *p_input = p_owner->p_input;
1434     picture_t      *p_pic;
1435     int i_lost = 0;
1436     int i_decoded = 0;
1437     int i_displayed = 0;
1438
1439     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1440     {
1441         vout_thread_t  *p_vout = p_owner->p_vout;
1442         if( p_dec->b_die )
1443         {
1444             /* It prevent freezing VLC in case of broken decoder */
1445             vout_DropPicture( p_vout, p_pic );
1446             if( p_block )
1447                 block_Release( p_block );
1448             break;
1449         }
1450
1451         i_decoded++;
1452
1453         if( p_pic->date < p_owner->i_preroll_end )
1454         {
1455             vout_DropPicture( p_vout, p_pic );
1456             continue;
1457         }
1458
1459         if( p_owner->i_preroll_end > 0 )
1460         {
1461             msg_Dbg( p_dec, "End of video preroll" );
1462             if( p_vout )
1463                 vout_Flush( p_vout, 1 );
1464             /* */
1465             p_owner->i_preroll_end = -1;
1466         }
1467
1468         if( p_dec->pf_get_cc &&
1469             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1470             DecoderGetCc( p_dec, p_dec );
1471
1472         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1473     }
1474     if( i_decoded > 0 || i_lost > 0 || i_displayed > 0 )
1475     {
1476         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1477
1478         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video,
1479                              i_decoded, NULL );
1480         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_pictures,
1481                              i_lost , NULL);
1482
1483         stats_UpdateInteger( p_dec, p_input->p->counters.p_displayed_pictures,
1484                              i_displayed, NULL);
1485
1486         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1487     }
1488 }
1489
1490 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic,
1491                             bool b_telx )
1492 {
1493     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1494     vout_thread_t *p_vout = p_owner->p_spu_vout;
1495
1496     /* */
1497     if( p_subpic->i_start <= 0 )
1498     {
1499         msg_Warn( p_dec, "non-dated spu buffer received" );
1500         subpicture_Delete( p_subpic );
1501         return;
1502     }
1503
1504     /* */
1505     vlc_mutex_lock( &p_owner->lock );
1506
1507     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1508     {
1509         p_subpic->p_next = NULL;
1510
1511         *p_owner->buffer.pp_subpic_next = p_subpic;
1512         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1513
1514         p_owner->buffer.i_count++;
1515         /* XXX it is important to be full after the first one */
1516         if( p_owner->buffer.i_count > 0 )
1517         {
1518             p_owner->buffer.b_full = true;
1519             vlc_cond_signal( &p_owner->wait );
1520         }
1521     }
1522
1523     for( ;; )
1524     {
1525         bool b_has_more = false;
1526         bool b_reject;
1527         DecoderWaitUnblock( p_dec, &b_reject );
1528
1529         if( p_owner->b_buffering )
1530         {
1531             vlc_mutex_unlock( &p_owner->lock );
1532             return;
1533         }
1534
1535         /* */
1536         if( p_owner->buffer.p_subpic )
1537         {
1538             p_subpic = p_owner->buffer.p_subpic;
1539
1540             p_owner->buffer.p_subpic = p_subpic->p_next;
1541             p_owner->buffer.i_count--;
1542
1543             b_has_more = p_owner->buffer.p_subpic != NULL;
1544             if( !b_has_more )
1545                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1546         }
1547
1548         /* */
1549         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1550                       NULL, NULL, b_telx );
1551
1552         vlc_mutex_unlock( &p_owner->lock );
1553
1554         if( !b_reject )
1555             spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
1556         else
1557             subpicture_Delete( p_subpic );
1558
1559         if( !b_has_more )
1560             break;
1561         vlc_mutex_lock( &p_owner->lock );
1562         if( !p_owner->buffer.p_subpic )
1563         {
1564             vlc_mutex_unlock( &p_owner->lock );
1565             break;
1566         }
1567     }
1568 }
1569
1570 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block,
1571                              bool b_telx )
1572 {
1573     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1574
1575     assert( p_owner->p_clock );
1576     assert( !p_sout_block->p_next );
1577
1578     vlc_mutex_lock( &p_owner->lock );
1579
1580     if( p_owner->b_buffering || p_owner->buffer.p_block )
1581     {
1582         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1583
1584         p_owner->buffer.i_count++;
1585         /* XXX it is important to be full after the first one */
1586         if( p_owner->buffer.i_count > 0 )
1587         {
1588             p_owner->buffer.b_full = true;
1589             vlc_cond_signal( &p_owner->wait );
1590         }
1591     }
1592
1593     for( ;; )
1594     {
1595         bool b_has_more = false;
1596         bool b_reject;
1597         DecoderWaitUnblock( p_dec, &b_reject );
1598
1599         if( p_owner->b_buffering )
1600         {
1601             vlc_mutex_unlock( &p_owner->lock );
1602             return;
1603         }
1604
1605         /* */
1606         if( p_owner->buffer.p_block )
1607         {
1608             p_sout_block = p_owner->buffer.p_block;
1609
1610             p_owner->buffer.p_block = p_sout_block->p_next;
1611             p_owner->buffer.i_count--;
1612
1613             b_has_more = p_owner->buffer.p_block != NULL;
1614             if( !b_has_more )
1615                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1616         }
1617         p_sout_block->p_next = NULL;
1618
1619         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1620                       &p_sout_block->i_length,
1621                       &p_sout_block->i_rate, NULL, b_telx );
1622
1623         vlc_mutex_unlock( &p_owner->lock );
1624
1625         if( !b_reject )
1626             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block );
1627         else
1628             block_Release( p_sout_block );
1629
1630         if( !b_has_more )
1631             break;
1632         vlc_mutex_lock( &p_owner->lock );
1633         if( !p_owner->buffer.p_block )
1634         {
1635             vlc_mutex_unlock( &p_owner->lock );
1636             break;
1637         }
1638     }
1639 }
1640
1641 /* */
1642 static void DecoderFlushBuffering( decoder_t *p_dec )
1643 {
1644     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1645
1646     vlc_assert_locked( &p_owner->lock );
1647
1648     while( p_owner->buffer.p_picture )
1649     {
1650         picture_t *p_picture = p_owner->buffer.p_picture;
1651
1652         p_owner->buffer.p_picture = p_picture->p_next;
1653         p_owner->buffer.i_count--;
1654
1655         if( p_owner->p_vout )
1656             vout_DropPicture( p_owner->p_vout, p_picture );
1657
1658         if( !p_owner->buffer.p_picture )
1659             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1660     }
1661     while( p_owner->buffer.p_audio )
1662     {
1663         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1664
1665         p_owner->buffer.p_audio = p_audio->p_next;
1666         p_owner->buffer.i_count--;
1667
1668         aout_BufferFree( p_audio );
1669
1670         if( !p_owner->buffer.p_audio )
1671             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1672     }
1673     while( p_owner->buffer.p_subpic )
1674     {
1675         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1676
1677         p_owner->buffer.p_subpic = p_subpic->p_next;
1678         p_owner->buffer.i_count--;
1679
1680         subpicture_Delete( p_subpic );
1681
1682         if( !p_owner->buffer.p_subpic )
1683             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1684     }
1685     if( p_owner->buffer.p_block )
1686     {
1687         block_ChainRelease( p_owner->buffer.p_block );
1688
1689         p_owner->buffer.i_count = 0;
1690         p_owner->buffer.p_block = NULL;
1691         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1692     }
1693 }
1694
1695 /* This function process a block for sout
1696  */
1697 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1698 {
1699     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1700     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1701     block_t *p_sout_block;
1702
1703     while( ( p_sout_block =
1704                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1705     {
1706         if( !p_owner->p_sout_input )
1707         {
1708             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1709
1710             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1711             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1712             if( p_dec->fmt_in.psz_language )
1713             {
1714                 if( p_owner->sout.psz_language )
1715                     free( p_owner->sout.psz_language );
1716                 p_owner->sout.psz_language =
1717                     strdup( p_dec->fmt_in.psz_language );
1718             }
1719
1720             p_owner->p_sout_input =
1721                 sout_InputNew( p_owner->p_sout,
1722                                &p_owner->sout );
1723
1724             if( p_owner->p_sout_input == NULL )
1725             {
1726                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1727                          (char *)&p_owner->sout.i_codec );
1728                 p_dec->b_error = true;
1729
1730                 while( p_sout_block )
1731                 {
1732                     block_t *p_next = p_sout_block->p_next;
1733                     block_Release( p_sout_block );
1734                     p_sout_block = p_next;
1735                 }
1736                 break;
1737             }
1738         }
1739
1740         while( p_sout_block )
1741         {
1742             block_t *p_next = p_sout_block->p_next;
1743
1744             p_sout_block->p_next = NULL;
1745
1746             DecoderPlaySout( p_dec, p_sout_block, b_telx );
1747
1748             p_sout_block = p_next;
1749         }
1750
1751         /* For now it's enough, as only sout impact on this flag */
1752         if( p_owner->p_sout->i_out_pace_nocontrol > 0 &&
1753             p_owner->p_input->p->b_out_pace_control )
1754         {
1755             msg_Dbg( p_dec, "switching to sync mode" );
1756             p_owner->p_input->p->b_out_pace_control = false;
1757         }
1758         else if( p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
1759                  !p_owner->p_input->p->b_out_pace_control )
1760         {
1761             msg_Dbg( p_dec, "switching to async mode" );
1762             p_owner->p_input->p->b_out_pace_control = true;
1763         }
1764     }
1765 }
1766
1767 /* This function process a video block
1768  */
1769 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1770 {
1771     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1772
1773     if( p_owner->p_packetizer )
1774     {
1775         block_t *p_packetized_block;
1776         decoder_t *p_packetizer = p_owner->p_packetizer;
1777
1778         while( (p_packetized_block =
1779                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1780         {
1781             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1782             {
1783                 es_format_Clean( &p_dec->fmt_in );
1784                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1785             }
1786             if( p_packetizer->pf_get_cc )
1787                 DecoderGetCc( p_dec, p_packetizer );
1788
1789             while( p_packetized_block )
1790             {
1791                 block_t *p_next = p_packetized_block->p_next;
1792                 p_packetized_block->p_next = NULL;
1793
1794                 DecoderDecodeVideo( p_dec, p_packetized_block );
1795
1796                 p_packetized_block = p_next;
1797             }
1798         }
1799     }
1800     else if( p_block )
1801     {
1802         DecoderDecodeVideo( p_dec, p_block );
1803     }
1804
1805     if( b_flush && p_owner->p_vout )
1806         vout_Flush( p_owner->p_vout, 1 );
1807 }
1808
1809 /* This function process a audio block
1810  */
1811 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1812 {
1813     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1814
1815     if( p_owner->p_packetizer )
1816     {
1817         block_t *p_packetized_block;
1818         decoder_t *p_packetizer = p_owner->p_packetizer;
1819
1820         while( (p_packetized_block =
1821                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1822         {
1823             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1824             {
1825                 es_format_Clean( &p_dec->fmt_in );
1826                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1827             }
1828
1829             while( p_packetized_block )
1830             {
1831                 block_t *p_next = p_packetized_block->p_next;
1832                 p_packetized_block->p_next = NULL;
1833
1834                 DecoderDecodeAudio( p_dec, p_packetized_block );
1835
1836                 p_packetized_block = p_next;
1837             }
1838         }
1839     }
1840     else if( p_block )
1841     {
1842         DecoderDecodeAudio( p_dec, p_block );
1843     }
1844
1845     if( b_flush && p_owner->p_aout && p_owner->p_aout_input )
1846         aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1847 }
1848
1849 /* This function process a subtitle block
1850  */
1851 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1852 {
1853     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1854     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1855
1856     input_thread_t *p_input = p_owner->p_input;
1857     vout_thread_t *p_vout;
1858     subpicture_t *p_spu;
1859
1860     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1861     {
1862         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1863         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1864         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1865
1866         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1867         if( p_vout && p_owner->p_spu_vout == p_vout )
1868         {
1869             /* Preroll does not work very well with subtitle */
1870             if( p_spu->i_start > 0 &&
1871                 p_spu->i_start < p_owner->i_preroll_end &&
1872                 ( p_spu->i_stop <= 0 || p_spu->i_stop < p_owner->i_preroll_end ) )
1873             {
1874                 subpicture_Delete( p_spu );
1875             }
1876             else
1877             {
1878                 DecoderPlaySpu( p_dec, p_spu, b_telx );
1879             }
1880         }
1881         else
1882         {
1883             subpicture_Delete( p_spu );
1884         }
1885         if( p_vout )
1886             vlc_object_release( p_vout );
1887     }
1888
1889     if( b_flush && p_owner->p_spu_vout )
1890     {
1891         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1892
1893         if( p_vout && p_owner->p_spu_vout == p_vout )
1894             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1895                          p_owner->i_spu_channel );
1896
1897         if( p_vout )
1898             vlc_object_release( p_vout );
1899     }
1900 }
1901
1902 /* */
1903 static void DecoderProcessOnFlush( decoder_t *p_dec )
1904 {
1905     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1906
1907     vlc_mutex_lock( &p_owner->lock );
1908     DecoderFlushBuffering( p_dec );
1909     vlc_mutex_unlock( &p_owner->lock );
1910
1911     DecoderSignalFlushed( p_dec );
1912 }
1913 /**
1914  * Decode a block
1915  *
1916  * \param p_dec the decoder object
1917  * \param p_block the block to decode
1918  * \return VLC_SUCCESS or an error code
1919  */
1920 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1921 {
1922     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1923     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1924
1925     if( p_block && p_block->i_buffer <= 0 )
1926     {
1927         assert( !b_flush_request );
1928         block_Release( p_block );
1929         return;
1930     }
1931
1932 #ifdef ENABLE_SOUT
1933     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
1934     {
1935         if( p_block )
1936             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1937
1938         DecoderProcessSout( p_dec, p_block );
1939     }
1940     else
1941 #endif
1942     {
1943         bool b_flush = false;
1944
1945         if( p_block )
1946         {
1947             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1948             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1949
1950             b_flush = !b_flushing && b_flush_request;
1951
1952             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1953         }
1954
1955         if( p_dec->fmt_in.i_cat == AUDIO_ES )
1956         {
1957             DecoderProcessAudio( p_dec, p_block, b_flush );
1958         }
1959         else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1960         {
1961             DecoderProcessVideo( p_dec, p_block, b_flush );
1962         }
1963         else if( p_dec->fmt_in.i_cat == SPU_ES )
1964         {
1965             DecoderProcessSpu( p_dec, p_block, b_flush );
1966         }
1967         else
1968         {
1969             msg_Err( p_dec, "unknown ES format" );
1970             p_dec->b_error = true;
1971         }
1972     }
1973
1974     /* */
1975     if( b_flush_request )
1976         DecoderProcessOnFlush( p_dec );
1977 }
1978
1979 static void DecoderError( decoder_t *p_dec, block_t *p_block )
1980 {
1981     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1982
1983     /* */
1984     if( p_block )
1985         block_Release( p_block );
1986
1987     if( b_flush_request )
1988         DecoderProcessOnFlush( p_dec );
1989 }
1990
1991
1992 /**
1993  * Destroys a decoder object
1994  *
1995  * \param p_dec the decoder object
1996  * \return nothing
1997  */
1998 static void DeleteDecoder( decoder_t * p_dec )
1999 {
2000     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2001
2002     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2003              (char*)&p_dec->fmt_in.i_codec,
2004              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2005
2006     /* Free all packets still in the decoder fifo. */
2007     block_FifoEmpty( p_owner->p_fifo );
2008     block_FifoRelease( p_owner->p_fifo );
2009
2010     /* */
2011     vlc_mutex_lock( &p_owner->lock );
2012     DecoderFlushBuffering( p_dec );
2013     vlc_mutex_unlock( &p_owner->lock );
2014
2015     /* Cleanup */
2016     if( p_owner->p_aout_input )
2017         aout_DecDelete( p_owner->p_aout, p_owner->p_aout_input );
2018     if( p_owner->p_aout )
2019     {
2020         vlc_object_release( p_owner->p_aout );
2021         p_owner->p_aout = NULL;
2022     }
2023     if( p_owner->p_vout )
2024     {
2025         /* Hack to make sure all the the pictures are freed by the decoder */
2026         vout_FixLeaks( p_owner->p_vout, true );
2027
2028         /* We are about to die. Reattach video output to p_vlc. */
2029         vout_Request( p_dec, p_owner->p_vout, NULL );
2030         input_SendEventVout( p_owner->p_input );
2031     }
2032
2033 #ifdef ENABLE_SOUT
2034     if( p_owner->p_sout_input )
2035     {
2036         sout_InputDelete( p_owner->p_sout_input );
2037         es_format_Clean( &p_owner->sout );
2038     }
2039 #endif
2040
2041     if( p_dec->fmt_in.i_cat == SPU_ES )
2042     {
2043         vout_thread_t *p_vout;
2044
2045         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2046         if( p_vout )
2047         {
2048             if( p_owner->p_spu_vout == p_vout )
2049                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR, p_owner->i_spu_channel );
2050             vlc_object_release( p_vout );
2051         }
2052     }
2053
2054     es_format_Clean( &p_dec->fmt_in );
2055     es_format_Clean( &p_dec->fmt_out );
2056
2057     if( p_owner->p_packetizer )
2058     {
2059         module_unneed( p_owner->p_packetizer,
2060                        p_owner->p_packetizer->p_module );
2061         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2062         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2063         vlc_object_detach( p_owner->p_packetizer );
2064         vlc_object_release( p_owner->p_packetizer );
2065     }
2066
2067     es_format_Clean( &p_owner->fmt_description );
2068
2069     vlc_cond_destroy( &p_owner->wait );
2070     vlc_mutex_destroy( &p_owner->lock );
2071
2072     vlc_object_detach( p_dec );
2073
2074     free( p_owner );
2075 }
2076
2077 /*****************************************************************************
2078  * Buffers allocation callbacks for the decoders
2079  *****************************************************************************/
2080 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2081 {
2082     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2083
2084     vlc_assert_locked( &p_owner->lock );
2085
2086     es_format_Clean( &p_owner->fmt_description );
2087
2088     p_owner->b_fmt_description = true;
2089     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2090 }
2091 static vout_thread_t *aout_request_vout( void *p_private,
2092                                          vout_thread_t *p_vout, video_format_t *p_fmt )
2093 {
2094     decoder_t *p_dec = p_private;
2095
2096     p_vout =  vout_Request( p_dec, p_vout, p_fmt );
2097     input_SendEventVout( p_dec->p_owner->p_input );
2098
2099     return p_vout;
2100 }
2101
2102 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2103 {
2104     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2105     aout_buffer_t *p_buffer;
2106
2107     if( p_owner->p_aout_input != NULL &&
2108         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
2109           p_dec->fmt_out.audio.i_original_channels !=
2110               p_owner->audio.i_original_channels ||
2111           p_dec->fmt_out.audio.i_bytes_per_frame !=
2112               p_owner->audio.i_bytes_per_frame ) )
2113     {
2114         aout_input_t *p_aout_input = p_owner->p_aout_input;
2115
2116         /* Parameters changed, restart the aout */
2117         vlc_mutex_lock( &p_owner->lock );
2118
2119         DecoderFlushBuffering( p_dec );
2120
2121         p_owner->p_aout_input = NULL;
2122         aout_DecDelete( p_owner->p_aout, p_aout_input );
2123
2124         vlc_mutex_unlock( &p_owner->lock );
2125     }
2126
2127     if( p_owner->p_aout_input == NULL )
2128     {
2129         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
2130         audio_sample_format_t format;
2131         aout_input_t *p_aout_input;
2132         aout_instance_t *p_aout;
2133         aout_request_vout_t request_vout;
2134
2135         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2136         p_owner->audio = p_dec->fmt_out.audio;
2137
2138         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2139         if( i_force_dolby &&
2140             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2141                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2142         {
2143             if( i_force_dolby == 1 )
2144             {
2145                 format.i_original_channels = format.i_original_channels |
2146                                              AOUT_CHAN_DOLBYSTEREO;
2147             }
2148             else /* i_force_dolby == 2 */
2149             {
2150                 format.i_original_channels = format.i_original_channels &
2151                                              ~AOUT_CHAN_DOLBYSTEREO;
2152             }
2153         }
2154
2155         request_vout.pf_request_vout = aout_request_vout;
2156         request_vout.p_private = p_dec;
2157
2158         p_aout = p_owner->p_aout;
2159         p_aout_input = aout_DecNew( p_dec, &p_aout,
2160                                     &format, &p_dec->fmt_out.audio_replay_gain, &request_vout );
2161
2162         vlc_mutex_lock( &p_owner->lock );
2163
2164         p_owner->p_aout = p_aout;
2165         p_owner->p_aout_input = p_aout_input;
2166         DecoderUpdateFormatLocked( p_dec );
2167
2168         vlc_mutex_unlock( &p_owner->lock );
2169
2170         if( p_owner->p_aout_input == NULL )
2171         {
2172             msg_Err( p_dec, "failed to create audio output" );
2173             p_dec->b_error = true;
2174             return NULL;
2175         }
2176         p_dec->fmt_out.audio.i_bytes_per_frame =
2177             p_owner->audio.i_bytes_per_frame;
2178     }
2179
2180     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
2181
2182     return p_buffer;
2183 }
2184
2185 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
2186 {
2187     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2188
2189     aout_DecDeleteBuffer( p_owner->p_aout,
2190                           p_owner->p_aout_input, p_buffer );
2191 }
2192
2193
2194 int vout_CountPictureAvailable( vout_thread_t *p_vout );
2195
2196 static picture_t *vout_new_buffer( decoder_t *p_dec )
2197 {
2198     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2199
2200     if( p_owner->p_vout == NULL ||
2201         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2202         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2203         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
2204         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
2205     {
2206         vout_thread_t *p_vout;
2207
2208         if( !p_dec->fmt_out.video.i_width ||
2209             !p_dec->fmt_out.video.i_height )
2210         {
2211             /* Can't create a new vout without display size */
2212             return NULL;
2213         }
2214
2215         if( !p_dec->fmt_out.video.i_visible_width ||
2216             !p_dec->fmt_out.video.i_visible_height )
2217         {
2218             if( p_dec->fmt_in.video.i_visible_width &&
2219                 p_dec->fmt_in.video.i_visible_height )
2220             {
2221                 p_dec->fmt_out.video.i_visible_width =
2222                     p_dec->fmt_in.video.i_visible_width;
2223                 p_dec->fmt_out.video.i_visible_height =
2224                     p_dec->fmt_in.video.i_visible_height;
2225             }
2226             else
2227             {
2228                 p_dec->fmt_out.video.i_visible_width =
2229                     p_dec->fmt_out.video.i_width;
2230                 p_dec->fmt_out.video.i_visible_height =
2231                     p_dec->fmt_out.video.i_height;
2232             }
2233         }
2234
2235         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
2236             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2237         {
2238             p_dec->fmt_out.video.i_visible_height = 1080;
2239             p_dec->fmt_out.video.i_sar_num *= 135;
2240             p_dec->fmt_out.video.i_sar_den *= 136;
2241             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2242         }
2243
2244         if( !p_dec->fmt_out.video.i_sar_num ||
2245             !p_dec->fmt_out.video.i_sar_den )
2246         {
2247             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
2248               p_dec->fmt_out.video.i_visible_height;
2249
2250             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
2251               p_dec->fmt_out.video.i_visible_width;
2252         }
2253
2254         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
2255                      &p_dec->fmt_out.video.i_sar_den,
2256                      p_dec->fmt_out.video.i_sar_num,
2257                      p_dec->fmt_out.video.i_sar_den, 50000 );
2258
2259         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
2260         p_owner->video = p_dec->fmt_out.video;
2261
2262         vlc_mutex_lock( &p_owner->lock );
2263
2264         DecoderFlushBuffering( p_dec );
2265
2266         p_vout = p_owner->p_vout;
2267         p_owner->p_vout = NULL;
2268         vlc_mutex_unlock( &p_owner->lock );
2269
2270         p_vout = vout_Request( p_dec, p_vout, &p_dec->fmt_out.video );
2271
2272         vlc_mutex_lock( &p_owner->lock );
2273         p_owner->p_vout = p_vout;
2274
2275         DecoderUpdateFormatLocked( p_dec );
2276
2277         vlc_mutex_unlock( &p_owner->lock );
2278
2279         input_SendEventVout( p_owner->p_input );
2280         if( p_vout == NULL )
2281         {
2282             msg_Err( p_dec, "failed to create video output" );
2283             p_dec->b_error = true;
2284             return NULL;
2285         }
2286
2287         if( p_owner->video.i_rmask )
2288             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
2289         if( p_owner->video.i_gmask )
2290             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
2291         if( p_owner->video.i_bmask )
2292             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
2293     }
2294
2295     /* Get a new picture
2296      */
2297     for( ;; )
2298     {
2299         picture_t *p_picture;
2300
2301         if( p_dec->b_die || p_dec->b_error )
2302             return NULL;
2303
2304         /* The video filter chain required that there is always 1 free buffer
2305          * that it will use as temporary one. It will release the temporary
2306          * buffer once its work is done, so this check is safe even if we don't
2307          * lock around both count() and create().
2308          */
2309         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
2310         {
2311             p_picture = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
2312             if( p_picture )
2313                 return p_picture;
2314         }
2315
2316         if( DecoderIsFlushing( p_dec ) )
2317             return NULL;
2318
2319         /* */
2320         DecoderSignalBuffering( p_dec, true );
2321
2322         /* Check the decoder doesn't leak pictures */
2323         vout_FixLeaks( p_owner->p_vout, false );
2324
2325         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2326         msleep( VOUT_OUTMEM_SLEEP );
2327     }
2328 }
2329
2330 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2331 {
2332     vout_DropPicture( p_dec->p_owner->p_vout, p_pic );
2333 }
2334
2335 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2336 {
2337     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
2338 }
2339
2340 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2341 {
2342     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
2343 }
2344
2345 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
2346 {
2347     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2348     vout_thread_t *p_vout = NULL;
2349     subpicture_t *p_subpic;
2350     int i_attempts = 30;
2351
2352     while( i_attempts-- )
2353     {
2354         if( p_dec->b_die || p_dec->b_error )
2355             break;
2356
2357         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2358         if( p_vout )
2359             break;
2360
2361         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2362     }
2363
2364     if( !p_vout )
2365     {
2366         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2367         return NULL;
2368     }
2369
2370     if( p_owner->p_spu_vout != p_vout )
2371     {
2372         vlc_mutex_lock( &p_owner->lock );
2373
2374         DecoderFlushBuffering( p_dec );
2375
2376         vlc_mutex_unlock( &p_owner->lock );
2377
2378         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
2379                      &p_owner->i_spu_channel );
2380         p_owner->i_spu_order = 0;
2381         p_owner->p_spu_vout = p_vout;
2382     }
2383
2384     p_subpic = subpicture_New();
2385     if( p_subpic )
2386     {
2387         p_subpic->i_channel = p_owner->i_spu_channel;
2388         p_subpic->i_order = p_owner->i_spu_order++;
2389         p_subpic->b_subtitle = true;
2390     }
2391
2392     vlc_object_release( p_vout );
2393
2394     return p_subpic;
2395 }
2396
2397 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2398 {
2399     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2400     vout_thread_t *p_vout = NULL;
2401
2402     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2403     if( !p_vout || p_owner->p_spu_vout != p_vout )
2404     {
2405         if( p_vout )
2406             vlc_object_release( p_vout );
2407         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2408         return;
2409     }
2410
2411     subpicture_Delete( p_subpic );
2412
2413     vlc_object_release( p_vout );
2414 }
2415