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 #include <vlc_meta.h>
  43
  44 #include <vlc_interface.h>
  45 #include "audio_output/aout_internal.h"
  46 #include "stream_output/stream_output.h"
  47 #include "input_internal.h"
  48 #include "clock.h"
  49 #include "decoder.h"
  50 #include "event.h"
  51 #include "ressource.h"
  52
  53 #include "../video_output/vout_control.h"
  54
  55 static decoder_t *CreateDecoder( input_thread_t *, es_format_t *, int, sout_instance_t *p_sout );
  56 static void       DeleteDecoder( decoder_t * );
  57
  58 static void      *DecoderThread( vlc_object_t * );
  59 static void       DecoderProcess( decoder_t *, block_t * );
  60 static void       DecoderError( decoder_t *p_dec, block_t *p_block );
  61 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  62 static void       DecoderFlush( decoder_t * );
  63 static void       DecoderSignalBuffering( decoder_t *, bool );
  64 static void       DecoderFlushBuffering( decoder_t * );
  65
  66 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  67
  68 /* Buffers allocation callbacks for the decoders */
  69 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  70 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  71
  72 static picture_t *vout_new_buffer( decoder_t * );
  73 static void vout_del_buffer( decoder_t *, picture_t * );
  74 static void vout_link_picture( decoder_t *, picture_t * );
  75 static void vout_unlink_picture( decoder_t *, picture_t * );
  76
  77 static subpicture_t *spu_new_buffer( decoder_t * );
  78 static void spu_del_buffer( decoder_t *, subpicture_t * );
  79
  80 static es_format_t null_es_format;
  81
  82 struct decoder_owner_sys_t
  83 {
  84     int64_t         i_preroll_end;
  85
  86     input_thread_t  *p_input;
  87     input_clock_t   *p_clock;
  88     int             i_last_rate;
  89
  90     vout_thread_t   *p_spu_vout;
  91     int              i_spu_channel;
  92     int64_t          i_spu_order;
  93
  94     sout_instance_t         *p_sout;
  95     sout_packetizer_input_t *p_sout_input;
  96
  97     /* Some decoders require already packetized data (ie. not truncated) */
  98     decoder_t *p_packetizer;
  99
 100     /* Current format in use by the output */
 101     video_format_t video;
 102     audio_format_t audio;
 103     es_format_t    sout;
 104
 105     /* */
 106     bool           b_fmt_description;
 107     es_format_t    fmt_description;
 108     vlc_meta_t     *p_description;
 109
 110     /* fifo */
 111     block_fifo_t *p_fifo;
 112
 113     /* Lock for communication with decoder thread */
 114     vlc_mutex_t lock;
 115     vlc_cond_t  wait;
 116
 117     /* -- These variables need locking on write(only) -- */
 118     aout_instance_t *p_aout;
 119     aout_input_t    *p_aout_input;
 120
 121     vout_thread_t   *p_vout;
 122
 123     /* -- Theses variables need locking on read *and* write -- */
 124     /* */
 125     /* Pause */
 126     bool b_paused;
 127     struct
 128     {
 129         mtime_t i_date;
 130         int     i_ignore;
 131     } pause;
 132
 133     /* Buffering */
 134     bool b_buffering;
 135     struct
 136     {
 137         bool b_first;
 138         bool b_full;
 139         int  i_count;
 140
 141         picture_t     *p_picture;
 142         picture_t     **pp_picture_next;
 143
 144         subpicture_t  *p_subpic;
 145         subpicture_t  **pp_subpic_next;
 146
 147         aout_buffer_t *p_audio;
 148         aout_buffer_t **pp_audio_next;
 149
 150         block_t       *p_block;
 151         block_t       **pp_block_next;
 152     } buffer;
 153
 154     /* Flushing */
 155     bool b_flushing;
 156
 157     /* CC */
 158     struct
 159     {
 160         bool b_supported;
 161         bool pb_present[4];
 162         decoder_t *pp_decoder[4];
 163     } cc;
 164
 165     /* Delay */
 166     mtime_t i_ts_delay;
 167 };
 168
 169 #define DECODER_MAX_BUFFERING_COUNT (4)
 170 #define DECODER_MAX_BUFFERING_AUDIO_DURATION (AOUT_MAX_PREPARE_TIME)
 171 #define DECODER_MAX_BUFFERING_VIDEO_DURATION (1*CLOCK_FREQ)
 172
 173 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 174  * a bogus PTS and won't be displayed */
 175 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 176
 177 /* */
 178 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 179
 180
 181 /*****************************************************************************
 182  * Public functions
 183  *****************************************************************************/
 184 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 185 {
 186     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 187     if( !p_picture )
 188         msg_Warn( p_decoder, "can't get output picture" );
 189     return p_picture;
 190 }
 191 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 192 {
 193     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 194 }
 195 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 196 {
 197     p_decoder->pf_picture_link( p_decoder, p_picture );
 198 }
 199 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 200 {
 201     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 202 }
 203
 204 aout_buffer_t *decoder_NewAudioBuffer( decoder_t *p_decoder, int i_size )
 205 {
 206     if( !p_decoder->pf_aout_buffer_new )
 207         return NULL;
 208     return p_decoder->pf_aout_buffer_new( p_decoder, i_size );
 209 }
 210 void decoder_DeleteAudioBuffer( decoder_t *p_decoder, aout_buffer_t *p_buffer )
 211 {
 212     p_decoder->pf_aout_buffer_del( p_decoder, p_buffer );
 213 }
 214
 215 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder )
 216 {
 217     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder );
 218     if( !p_subpicture )
 219         msg_Warn( p_decoder, "can't get output subpicture" );
 220     return p_subpicture;
 221 }
 222 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 223 {
 224     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 225 }
 226
 227 /* decoder_GetInputAttachments:
 228  */
 229 int decoder_GetInputAttachments( decoder_t *p_dec,
 230                                  input_attachment_t ***ppp_attachment,
 231                                  int *pi_attachment )
 232 {
 233     if( !p_dec->pf_get_attachments )
 234         return VLC_EGENERIC;
 235
 236     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 237 }
 238 /* decoder_GetDisplayDate:
 239  */
 240 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 241 {
 242     if( !p_dec->pf_get_display_date )
 243         return 0;
 244
 245     return p_dec->pf_get_display_date( p_dec, i_ts );
 246 }
 247 /* decoder_GetDisplayRate:
 248  */
 249 int decoder_GetDisplayRate( decoder_t *p_dec )
 250 {
 251     if( !p_dec->pf_get_display_rate )
 252         return INPUT_RATE_DEFAULT;
 253
 254     return p_dec->pf_get_display_rate( p_dec );
 255 }
 256
 257 /**
 258  * Spawns a new decoder thread
 259  *
 260  * \param p_input the input thread
 261  * \param p_es the es descriptor
 262  * \return the spawned decoder object
 263  */
 264 decoder_t *input_DecoderNew( input_thread_t *p_input,
 265                              es_format_t *fmt, input_clock_t *p_clock, sout_instance_t *p_sout  )
 266 {
 267     decoder_t *p_dec = NULL;
 268     int i_priority;
 269
 270 #ifdef ENABLE_SOUT
 271     /* If we are in sout mode, search for packetizer module */
 272     if( p_sout )
 273     {
 274         /* Create the decoder configuration structure */
 275         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
 276         if( p_dec == NULL )
 277         {
 278             msg_Err( p_input, "could not create packetizer" );
 279             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 280                             _("VLC could not open the packetizer module.") );
 281             return NULL;
 282         }
 283     }
 284     else
 285 #endif
 286     {
 287         /* Create the decoder configuration structure */
 288         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
 289         if( p_dec == NULL )
 290         {
 291             msg_Err( p_input, "could not create decoder" );
 292             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 293                             _("VLC could not open the decoder module.") );
 294             return NULL;
 295         }
 296     }
 297
 298     if( !p_dec->p_module )
 299     {
 300         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 301
 302         DeleteDecoder( p_dec );
 303         vlc_object_release( p_dec );
 304         return NULL;
 305     }
 306
 307     p_dec->p_owner->p_clock = p_clock;
 308
 309     if( fmt->i_cat == AUDIO_ES )
 310         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 311     else
 312         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 313
 314     /* Spawn the decoder thread */
 315     if( vlc_thread_create( p_dec, "decoder", DecoderThread, i_priority ) )
 316     {
 317         msg_Err( p_dec, "cannot spawn decoder thread" );
 318         module_unneed( p_dec, p_dec->p_module );
 319         DeleteDecoder( p_dec );
 320         vlc_object_release( p_dec );
 321         return NULL;
 322     }
 323
 324     return p_dec;
 325 }
 326
 327 /**
 328  * Kills a decoder thread and waits until it's finished
 329  *
 330  * \param p_input the input thread
 331  * \param p_es the es descriptor
 332  * \return nothing
 333  */
 334 void input_DecoderDelete( decoder_t *p_dec )
 335 {
 336     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 337
 338     vlc_object_kill( p_dec );
 339
 340     /* Make sure we aren't paused/buffering/waiting anymore */
 341     vlc_mutex_lock( &p_owner->lock );
 342     const bool b_was_paused = p_owner->b_paused;
 343     p_owner->b_paused = false;
 344     p_owner->b_buffering = false;
 345     p_owner->b_flushing = true;
 346     vlc_cond_signal( &p_owner->wait );
 347     vlc_mutex_unlock( &p_owner->lock );
 348
 349     vlc_thread_join( p_dec );
 350     p_owner->b_paused = b_was_paused;
 351
 352     module_unneed( p_dec, p_dec->p_module );
 353
 354     /* */
 355     if( p_dec->p_owner->cc.b_supported )
 356     {
 357         int i;
 358         for( i = 0; i < 4; i++ )
 359             input_DecoderSetCcState( p_dec, false, i );
 360     }
 361
 362     /* Delete decoder configuration */
 363     DeleteDecoder( p_dec );
 364
 365     /* Delete the decoder */
 366     vlc_object_release( p_dec );
 367 }
 368
 369 /**
 370  * Put a block_t in the decoder's fifo.
 371  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 372  *
 373  * \param p_dec the decoder object
 374  * \param p_block the data block
 375  */
 376 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block )
 377 {
 378     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 379
 380     if( p_owner->p_input->p->b_out_pace_control )
 381     {
 382         /* The fifo is not consummed when buffering and so will
 383          * deadlock vlc.
 384          * There is no need to lock as b_buffering is never modify
 385          * inside decoder thread. */
 386         if( !p_owner->b_buffering )
 387             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 388     }
 389     else if( block_FifoSize( p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 390     {
 391         /* FIXME: ideally we would check the time amount of data
 392          * in the FIFO instead of its size. */
 393         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 394                   "consumed quickly enough), resetting fifo!" );
 395         block_FifoEmpty( p_owner->p_fifo );
 396     }
 397
 398     block_FifoPut( p_owner->p_fifo, p_block );
 399 }
 400
 401 bool input_DecoderIsEmpty( decoder_t * p_dec )
 402 {
 403     assert( !p_dec->p_owner->b_buffering );
 404
 405     /* FIXME that's not really true */
 406     return block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 407 }
 408
 409 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 410 {
 411     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 412     int i;
 413
 414     vlc_mutex_lock( &p_owner->lock );
 415     for( i = 0; i < 4; i++ )
 416         pb_present[i] =  p_owner->cc.pb_present[i];
 417     vlc_mutex_unlock( &p_owner->lock );
 418 }
 419 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 420 {
 421     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 422
 423     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 424
 425     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 426         return VLC_EGENERIC;
 427
 428     if( b_decode )
 429     {
 430         static const vlc_fourcc_t fcc[4] = {
 431             VLC_FOURCC('c', 'c', '1', ' '),
 432             VLC_FOURCC('c', 'c', '2', ' '),
 433             VLC_FOURCC('c', 'c', '3', ' '),
 434             VLC_FOURCC('c', 'c', '4', ' '),
 435         };
 436         decoder_t *p_cc;
 437         es_format_t fmt;
 438
 439         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 440         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_owner->p_sout );
 441         if( !p_cc )
 442         {
 443             msg_Err( p_dec, "could not create decoder" );
 444             intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
 445                             _("VLC could not open the decoder module.") );
 446             return VLC_EGENERIC;
 447         }
 448         else if( !p_cc->p_module )
 449         {
 450             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 451             DeleteDecoder( p_cc );
 452             vlc_object_release( p_cc );
 453             return VLC_EGENERIC;
 454         }
 455         p_cc->p_owner->p_clock = p_owner->p_clock;
 456
 457         vlc_mutex_lock( &p_owner->lock );
 458         p_owner->cc.pp_decoder[i_channel] = p_cc;
 459         vlc_mutex_unlock( &p_owner->lock );
 460     }
 461     else
 462     {
 463         decoder_t *p_cc;
 464
 465         vlc_mutex_lock( &p_owner->lock );
 466         p_cc = p_owner->cc.pp_decoder[i_channel];
 467         p_owner->cc.pp_decoder[i_channel] = NULL;
 468         vlc_mutex_unlock( &p_owner->lock );
 469
 470         if( p_cc )
 471         {
 472             vlc_object_kill( p_cc );
 473             module_unneed( p_cc, p_cc->p_module );
 474             DeleteDecoder( p_cc );
 475             vlc_object_release( p_cc );
 476         }
 477     }
 478     return VLC_SUCCESS;
 479 }
 480 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 481 {
 482     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 483
 484     *pb_decode = false;
 485     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 486         return VLC_EGENERIC;
 487
 488     vlc_mutex_lock( &p_owner->lock );
 489     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 490     vlc_mutex_unlock( &p_owner->lock );
 491     return VLC_EGENERIC;
 492 }
 493
 494 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 495 {
 496     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 497
 498     vlc_mutex_lock( &p_owner->lock );
 499
 500     assert( !p_owner->b_paused || !b_paused );
 501
 502     p_owner->b_paused = b_paused;
 503     p_owner->pause.i_date = i_date;
 504     p_owner->pause.i_ignore = 0;
 505     vlc_cond_signal( &p_owner->wait );
 506
 507     DecoderOutputChangePause( p_dec, b_paused, i_date );
 508
 509     vlc_mutex_unlock( &p_owner->lock );
 510 }
 511
 512 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 513 {
 514     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 515
 516     vlc_mutex_lock( &p_owner->lock );
 517     p_owner->i_ts_delay = i_delay;
 518     vlc_mutex_unlock( &p_owner->lock );
 519 }
 520
 521 void input_DecoderStartBuffering( decoder_t *p_dec )
 522 {
 523     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 524
 525     vlc_mutex_lock( &p_owner->lock );
 526
 527     DecoderFlush( p_dec );
 528
 529     p_owner->buffer.b_first = true;
 530     p_owner->buffer.b_full = false;
 531     p_owner->buffer.i_count = 0;
 532
 533     assert( !p_owner->buffer.p_picture && !p_owner->buffer.p_subpic &&
 534             !p_owner->buffer.p_audio && !p_owner->buffer.p_block );
 535
 536     p_owner->buffer.p_picture = NULL;
 537     p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
 538
 539     p_owner->buffer.p_subpic = NULL;
 540     p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
 541
 542     p_owner->buffer.p_audio = NULL;
 543     p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
 544
 545     p_owner->buffer.p_block = NULL;
 546     p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
 547
 548
 549     p_owner->b_buffering = true;
 550
 551     vlc_cond_signal( &p_owner->wait );
 552
 553     vlc_mutex_unlock( &p_owner->lock );
 554 }
 555
 556 void input_DecoderStopBuffering( decoder_t *p_dec )
 557 {
 558     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 559
 560     vlc_mutex_lock( &p_owner->lock );
 561
 562     p_owner->b_buffering = false;
 563
 564     vlc_cond_signal( &p_owner->wait );
 565
 566     vlc_mutex_unlock( &p_owner->lock );
 567 }
 568
 569 void input_DecoderWaitBuffering( decoder_t *p_dec )
 570 {
 571     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 572
 573     vlc_mutex_lock( &p_owner->lock );
 574
 575     while( vlc_object_alive( p_dec ) && p_owner->b_buffering && !p_owner->buffer.b_full )
 576     {
 577         block_FifoWake( p_owner->p_fifo );
 578         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 579     }
 580
 581     vlc_mutex_unlock( &p_owner->lock );
 582 }
 583
 584 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 585 {
 586     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 587
 588     *pi_duration = 0;
 589
 590     vlc_mutex_lock( &p_owner->lock );
 591     if( p_dec->fmt_in.i_cat == VIDEO_ES )
 592     {
 593         if( p_owner->b_paused && p_owner->p_vout )
 594         {
 595             vout_NextPicture( p_owner->p_vout, pi_duration );
 596             p_owner->pause.i_ignore++;
 597             vlc_cond_signal( &p_owner->wait );
 598         }
 599     }
 600     else
 601     {
 602         /* TODO subtitle should not be flushed */
 603         DecoderFlush( p_dec );
 604     }
 605     vlc_mutex_unlock( &p_owner->lock );
 606 }
 607
 608 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
 609 {
 610     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 611     bool b_changed;
 612
 613     vlc_mutex_lock( &p_owner->lock );
 614     b_changed = p_owner->b_fmt_description;
 615     if( b_changed )
 616     {
 617         if( p_fmt )
 618             es_format_Copy( p_fmt, &p_owner->fmt_description );
 619
 620         if( pp_meta )
 621         {
 622             *pp_meta = NULL;
 623             if( p_owner->p_description )
 624             {
 625                 *pp_meta = vlc_meta_New();
 626                 if( *pp_meta )
 627                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
 628             }
 629         }
 630         p_owner->b_fmt_description = false;
 631     }
 632     vlc_mutex_unlock( &p_owner->lock );
 633     return b_changed;
 634 }
 635
 636 /*****************************************************************************
 637  * Internal functions
 638  *****************************************************************************/
 639 static int DecoderGetInputAttachments( decoder_t *p_dec,
 640                                        input_attachment_t ***ppp_attachment,
 641                                        int *pi_attachment )
 642 {
 643     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 644                           ppp_attachment, pi_attachment );
 645 }
 646 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 647 {
 648     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 649
 650     vlc_mutex_lock( &p_owner->lock );
 651     if( p_owner->b_buffering || p_owner->b_paused )
 652         i_ts = 0;
 653     vlc_mutex_unlock( &p_owner->lock );
 654
 655     if( !p_owner->p_clock || !i_ts )
 656         return i_ts;
 657
 658     if( input_clock_ConvertTS( p_owner->p_clock, NULL, &i_ts, NULL, INT64_MAX ) )
 659         return 0;
 660
 661     return i_ts;
 662 }
 663 static int DecoderGetDisplayRate( decoder_t *p_dec )
 664 {
 665     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 666
 667     if( !p_owner->p_clock )
 668         return INPUT_RATE_DEFAULT;
 669     return input_clock_GetRate( p_owner->p_clock );
 670 }
 671
 672 /* */
 673 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 674 {
 675     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 676              "VLC probably does not support this sound or video format.",
 677              (char*)&codec );
 678     intf_UserFatal( p_dec, false, _("No suitable decoder module"),
 679                     _("VLC does not support the audio or video format \"%4.4s\". "
 680                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 681 }
 682
 683
 684 /**
 685  * Create a decoder object
 686  *
 687  * \param p_input the input thread
 688  * \param p_es the es descriptor
 689  * \param i_object_type Object type as define in include/vlc_objects.h
 690  * \return the decoder object
 691  */
 692 static decoder_t * CreateDecoder( input_thread_t *p_input,
 693                                   es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
 694 {
 695     decoder_t *p_dec;
 696     decoder_owner_sys_t *p_owner;
 697     int i;
 698
 699     p_dec = vlc_object_create( p_input, i_object_type );
 700     if( p_dec == NULL )
 701         return NULL;
 702
 703     p_dec->pf_decode_audio = NULL;
 704     p_dec->pf_decode_video = NULL;
 705     p_dec->pf_decode_sub = NULL;
 706     p_dec->pf_get_cc = NULL;
 707     p_dec->pf_packetize = NULL;
 708
 709     /* Initialize the decoder */
 710     p_dec->p_module = NULL;
 711
 712     memset( &null_es_format, 0, sizeof(es_format_t) );
 713     es_format_Copy( &p_dec->fmt_in, fmt );
 714     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 715
 716     p_dec->p_description = NULL;
 717
 718     /* Allocate our private structure for the decoder */
 719     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 720     if( p_dec->p_owner == NULL )
 721     {
 722         vlc_object_release( p_dec );
 723         return NULL;
 724     }
 725     p_dec->p_owner->i_preroll_end = -1;
 726     p_dec->p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 727     p_dec->p_owner->p_input = p_input;
 728     p_dec->p_owner->p_aout = NULL;
 729     p_dec->p_owner->p_aout_input = NULL;
 730     p_dec->p_owner->p_vout = NULL;
 731     p_dec->p_owner->p_spu_vout = NULL;
 732     p_dec->p_owner->i_spu_channel = 0;
 733     p_dec->p_owner->i_spu_order = 0;
 734     p_dec->p_owner->p_sout = p_sout;
 735     p_dec->p_owner->p_sout_input = NULL;
 736     p_dec->p_owner->p_packetizer = NULL;
 737
 738     /* decoder fifo */
 739     if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
 740     {
 741         free( p_dec->p_owner );
 742         vlc_object_release( p_dec );
 743         return NULL;
 744     }
 745
 746     /* Set buffers allocation callbacks for the decoders */
 747     p_dec->pf_aout_buffer_new = aout_new_buffer;
 748     p_dec->pf_aout_buffer_del = aout_del_buffer;
 749     p_dec->pf_vout_buffer_new = vout_new_buffer;
 750     p_dec->pf_vout_buffer_del = vout_del_buffer;
 751     p_dec->pf_picture_link    = vout_link_picture;
 752     p_dec->pf_picture_unlink  = vout_unlink_picture;
 753     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 754     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 755     /* */
 756     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 757     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 758     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 759
 760     vlc_object_attach( p_dec, p_input );
 761
 762     /* Find a suitable decoder/packetizer module */
 763     if( i_object_type == VLC_OBJECT_DECODER )
 764         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
 765     else
 766         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
 767
 768     /* Check if decoder requires already packetized data */
 769     if( i_object_type == VLC_OBJECT_DECODER &&
 770         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 771     {
 772         p_dec->p_owner->p_packetizer =
 773             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 774         if( p_dec->p_owner->p_packetizer )
 775         {
 776             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 777                             &p_dec->fmt_in );
 778
 779             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 780                             &null_es_format );
 781
 782             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 783
 784             p_dec->p_owner->p_packetizer->p_module =
 785                 module_need( p_dec->p_owner->p_packetizer,
 786                              "packetizer", "$packetizer", false );
 787
 788             if( !p_dec->p_owner->p_packetizer->p_module )
 789             {
 790                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 791                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 792                 vlc_object_release( p_dec->p_owner->p_packetizer );
 793             }
 794         }
 795     }
 796
 797     /* Copy ourself the input replay gain */
 798     if( fmt->i_cat == AUDIO_ES )
 799     {
 800         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 801         {
 802             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 803             {
 804                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 805                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 806             }
 807             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 808             {
 809                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 810                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 811             }
 812         }
 813     }
 814
 815     /* */
 816     vlc_mutex_init( &p_owner->lock );
 817     vlc_cond_init( &p_owner->wait );
 818
 819     p_owner->b_fmt_description = false;
 820     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 821     p_owner->p_description = NULL;
 822
 823     p_owner->b_paused = false;
 824     p_owner->pause.i_date = 0;
 825     p_owner->pause.i_ignore = 0;
 826
 827     p_owner->b_buffering = false;
 828     p_owner->buffer.b_first = true;
 829     p_owner->buffer.b_full = false;
 830     p_owner->buffer.i_count = 0;
 831     p_owner->buffer.p_picture = NULL;
 832     p_owner->buffer.p_subpic = NULL;
 833     p_owner->buffer.p_audio = NULL;
 834     p_owner->buffer.p_block = NULL;
 835
 836     p_owner->b_flushing = false;
 837
 838     /* */
 839     p_owner->cc.b_supported = false;
 840     if( i_object_type == VLC_OBJECT_DECODER )
 841     {
 842         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 843             p_owner->cc.b_supported = true;
 844         if( p_dec->pf_get_cc )
 845             p_owner->cc.b_supported = true;
 846     }
 847
 848     for( i = 0; i < 4; i++ )
 849     {
 850         p_owner->cc.pb_present[i] = false;
 851         p_owner->cc.pp_decoder[i] = NULL;
 852     }
 853     p_owner->i_ts_delay = 0;
 854     return p_dec;
 855 }
 856
 857 /**
 858  * The decoding main loop
 859  *
 860  * \param p_dec the decoder
 861  */
 862 static void *DecoderThread( vlc_object_t *p_this )
 863 {
 864     decoder_t *p_dec = (decoder_t *)p_this;
 865     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 866
 867     /* The decoder's main loop */
 868     for( ;; )
 869     {
 870         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 871
 872         /* Make sure there is no cancellation point other than this one^^.
 873          * If you need one, be sure to push cleanup of p_block. */
 874         DecoderSignalBuffering( p_dec, p_block == NULL );
 875
 876         if( p_block )
 877         {
 878             int canc = vlc_savecancel();
 879
 880             if( p_dec->b_error )
 881                 DecoderError( p_dec, p_block );
 882             else
 883                 DecoderProcess( p_dec, p_block );
 884
 885             vlc_restorecancel( canc );
 886         }
 887     }
 888     return NULL;
 889 }
 890
 891 static block_t *DecoderBlockFlushNew()
 892 {
 893     block_t *p_null = block_Alloc( 128 );
 894     if( !p_null )
 895         return NULL;
 896
 897     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY |
 898                        BLOCK_FLAG_CORRUPTED |
 899                        BLOCK_FLAG_CORE_FLUSH;
 900     memset( p_null->p_buffer, 0, p_null->i_buffer );
 901
 902     return p_null;
 903 }
 904
 905 static void DecoderFlush( decoder_t *p_dec )
 906 {
 907     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 908
 909     vlc_assert_locked( &p_owner->lock );
 910
 911     /* Empty the fifo */
 912     block_FifoEmpty( p_owner->p_fifo );
 913
 914     /* Monitor for flush end */
 915     p_owner->b_flushing = true;
 916     vlc_cond_signal( &p_owner->wait );
 917
 918     /* Send a special block */
 919     block_t *p_null = DecoderBlockFlushNew();
 920     if( !p_null )
 921         return;
 922     input_DecoderDecode( p_dec, p_null );
 923
 924     /* */
 925     while( vlc_object_alive( p_dec ) && p_owner->b_flushing )
 926         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 927 }
 928
 929 static void DecoderSignalFlushed( decoder_t *p_dec )
 930 {
 931     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 932
 933     vlc_mutex_lock( &p_owner->lock );
 934
 935     if( p_owner->b_flushing )
 936     {
 937         p_owner->b_flushing = false;
 938         vlc_cond_signal( &p_owner->wait );
 939     }
 940
 941     vlc_mutex_unlock( &p_owner->lock );
 942 }
 943
 944 static void DecoderSignalBuffering( decoder_t *p_dec, bool b_full )
 945 {
 946     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 947
 948     vlc_mutex_lock( &p_owner->lock );
 949
 950     if( p_owner->b_buffering )
 951     {
 952         if( b_full )
 953             p_owner->buffer.b_full = true;
 954         vlc_cond_signal( &p_owner->wait );
 955     }
 956
 957     vlc_mutex_unlock( &p_owner->lock );
 958 }
 959
 960 static bool DecoderIsFlushing( decoder_t *p_dec )
 961 {
 962     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 963     bool b_flushing;
 964
 965     vlc_mutex_lock( &p_owner->lock );
 966
 967     b_flushing = p_owner->b_flushing;
 968
 969     vlc_mutex_unlock( &p_owner->lock );
 970
 971     return b_flushing;
 972 }
 973
 974 static void DecoderWaitUnblock( decoder_t *p_dec, bool *pb_reject )
 975 {
 976     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 977
 978     vlc_assert_locked( &p_owner->lock );
 979
 980     while( !p_owner->b_flushing )
 981     {
 982         if( p_owner->b_paused )
 983         {
 984             if( p_owner->b_buffering && !p_owner->buffer.b_full )
 985                 break;
 986             if( p_owner->pause.i_ignore > 0 )
 987             {
 988                 p_owner->pause.i_ignore--;
 989                 break;
 990             }
 991         }
 992         else
 993         {
 994             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
 995                 break;
 996         }
 997         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 998     }
 999
1000     if( pb_reject )
1001         *pb_reject = p_owner->b_flushing;
1002 }
1003
1004 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
1005 {
1006     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1007
1008     vlc_assert_locked( &p_owner->lock );
1009
1010     /* XXX only audio and video output have to be paused.
1011      * - for sout it is useless
1012      * - for subs, it is done by the vout
1013      */
1014     if( p_dec->fmt_in.i_cat == AUDIO_ES )
1015     {
1016         if( p_owner->p_aout && p_owner->p_aout_input )
1017             aout_DecChangePause( p_owner->p_aout, p_owner->p_aout_input,
1018                                  b_paused, i_date );
1019     }
1020     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1021     {
1022         if( p_owner->p_vout )
1023             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1024     }
1025 }
1026 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1027 {
1028     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1029         *pi_preroll = INT64_MAX;
1030     else if( p->i_pts > 0 )
1031         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1032     else if( p->i_dts > 0 )
1033         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1034 }
1035
1036 static mtime_t DecoderTeletextFixTs( mtime_t i_ts )
1037 {
1038     mtime_t current_date = mdate();
1039
1040     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
1041     if( !i_ts || i_ts > current_date + 10000000 || i_ts < current_date )
1042     {
1043         /* ETSI EN 300 472 Annex A : do not take into account the PTS
1044          * for teletext streams. */
1045         return current_date + 400000;
1046     }
1047     return i_ts;
1048 }
1049
1050 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1051                           mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound, bool b_telx )
1052 {
1053     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1054     input_clock_t   *p_clock = p_owner->p_clock;
1055
1056     vlc_assert_locked( &p_owner->lock );
1057
1058     const mtime_t i_es_delay = p_owner->i_ts_delay;
1059
1060     if( p_clock )
1061     {
1062         const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1063         int i_rate;
1064
1065         if( *pi_ts0 > 0 )
1066         {
1067             *pi_ts0 += i_es_delay;
1068             if( pi_ts1 && *pi_ts1 > 0 )
1069                 *pi_ts1 += i_es_delay;
1070             if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) )
1071                 *pi_ts0 = 0;
1072         }
1073         else
1074         {
1075             i_rate = input_clock_GetRate( p_clock );
1076         }
1077
1078         /* Do not create ephemere data because of rounding errors */
1079         if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1080             *pi_ts1 += 1;
1081
1082         if( pi_duration )
1083             *pi_duration = ( *pi_duration * i_rate +
1084                                     INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
1085
1086         if( pi_rate )
1087             *pi_rate = i_rate;
1088
1089         if( b_telx )
1090         {
1091             *pi_ts0 = DecoderTeletextFixTs( *pi_ts0 );
1092             if( pi_ts1 && *pi_ts1 <= 0 )
1093                 *pi_ts1 = *pi_ts0;
1094         }
1095     }
1096 }
1097
1098 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1099                               int *pi_played_sum, int *pi_lost_sum )
1100 {
1101     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1102     aout_instance_t *p_aout = p_owner->p_aout;
1103     aout_input_t    *p_aout_input = p_owner->p_aout_input;
1104
1105     /* */
1106     if( p_audio->start_date <= 0 )
1107     {
1108         msg_Warn( p_dec, "non-dated audio buffer received" );
1109         *pi_lost_sum += 1;
1110         aout_BufferFree( p_audio );
1111         return;
1112     }
1113
1114     /* */
1115     vlc_mutex_lock( &p_owner->lock );
1116
1117     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1118     {
1119         p_audio->p_next = NULL;
1120
1121         *p_owner->buffer.pp_audio_next = p_audio;
1122         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1123
1124         p_owner->buffer.i_count++;
1125         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1126             p_audio->start_date - p_owner->buffer.p_audio->start_date > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1127         {
1128             p_owner->buffer.b_full = true;
1129             vlc_cond_signal( &p_owner->wait );
1130         }
1131     }
1132
1133     for( ;; )
1134     {
1135         bool b_has_more = false;
1136         bool b_reject;
1137         DecoderWaitUnblock( p_dec, &b_reject );
1138
1139         if( p_owner->b_buffering )
1140         {
1141             vlc_mutex_unlock( &p_owner->lock );
1142             return;
1143         }
1144
1145         /* */
1146         if( p_owner->buffer.p_audio )
1147         {
1148             p_audio = p_owner->buffer.p_audio;
1149
1150             p_owner->buffer.p_audio = p_audio->p_next;
1151             p_owner->buffer.i_count--;
1152
1153             b_has_more = p_owner->buffer.p_audio != NULL;
1154             if( !b_has_more )
1155                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1156         }
1157
1158         /* */
1159         const bool b_dated = p_audio->start_date > 0;
1160         int i_rate = INPUT_RATE_DEFAULT;
1161
1162         DecoderFixTs( p_dec, &p_audio->start_date, &p_audio->end_date, NULL,
1163                       &i_rate, AOUT_MAX_ADVANCE_TIME, false );
1164
1165         vlc_mutex_unlock( &p_owner->lock );
1166
1167         if( !p_aout || !p_aout_input ||
1168             p_audio->start_date <= 0 ||
1169             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1170             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1171             b_reject = true;
1172
1173         /* Do not wait against unprotected date */
1174         const mtime_t i_deadline = p_audio->start_date - AOUT_MAX_PREPARE_TIME;
1175         while( !b_reject && i_deadline > mdate() )
1176         {
1177             vlc_mutex_lock( &p_owner->lock );
1178             if( p_owner->b_flushing || p_dec->b_die )
1179             {
1180                 b_reject = true;
1181                 vlc_mutex_unlock( &p_owner->lock );
1182                 break;
1183             }
1184             vlc_cond_timedwait( &p_owner->wait, &p_owner->lock, i_deadline );
1185             vlc_mutex_unlock( &p_owner->lock );
1186         }
1187
1188         if( !b_reject )
1189         {
1190             if( !aout_DecPlay( p_aout, p_aout_input, p_audio, i_rate ) )
1191                 *pi_played_sum += 1;
1192             *pi_lost_sum += aout_DecGetResetLost( p_aout, p_aout_input );
1193         }
1194         else
1195         {
1196             if( b_dated )
1197                 msg_Warn( p_aout, "received buffer in the future" );
1198             else
1199                 msg_Warn( p_dec, "non-dated audio buffer received" );
1200
1201             *pi_lost_sum += 1;
1202             aout_BufferFree( p_audio );
1203         }
1204
1205         if( !b_has_more )
1206             break;
1207
1208         vlc_mutex_lock( &p_owner->lock );
1209         if( !p_owner->buffer.p_audio )
1210         {
1211             vlc_mutex_unlock( &p_owner->lock );
1212             break;
1213         }
1214     }
1215 }
1216
1217 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1218 {
1219     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1220     input_thread_t  *p_input = p_owner->p_input;
1221     aout_buffer_t   *p_aout_buf;
1222     int i_decoded = 0;
1223     int i_lost = 0;
1224     int i_played = 0;
1225
1226     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1227     {
1228         aout_instance_t *p_aout = p_owner->p_aout;
1229         aout_input_t    *p_aout_input = p_owner->p_aout_input;
1230
1231         if( p_dec->b_die )
1232         {
1233             /* It prevent freezing VLC in case of broken decoder */
1234             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1235             if( p_block )
1236                 block_Release( p_block );
1237             break;
1238         }
1239         i_decoded++;
1240
1241         if( p_aout_buf->start_date < p_owner->i_preroll_end )
1242         {
1243             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1244             continue;
1245         }
1246
1247         if( p_owner->i_preroll_end > 0 )
1248         {
1249             msg_Dbg( p_dec, "End of audio preroll" );
1250             if( p_owner->p_aout && p_owner->p_aout_input )
1251                 aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1252             /* */
1253             p_owner->i_preroll_end = -1;
1254         }
1255
1256         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1257     }
1258
1259     /* Update ugly stat */
1260     if( i_decoded > 0 || i_lost > 0 || i_played > 0 )
1261     {
1262         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1263
1264         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_abuffers,
1265                              i_lost, NULL );
1266         stats_UpdateInteger( p_dec, p_input->p->counters.p_played_abuffers,
1267                              i_played, NULL );
1268         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio,
1269                              i_decoded, NULL );
1270
1271         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1272     }
1273 }
1274 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1275 {
1276     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1277     block_t *p_cc;
1278     bool pb_present[4];
1279     int i;
1280     int i_cc_decoder;
1281
1282     assert( p_dec_cc->pf_get_cc != NULL );
1283
1284     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1285     if( !p_owner->cc.b_supported )
1286         return;
1287
1288     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1289     if( !p_cc )
1290         return;
1291
1292     vlc_mutex_lock( &p_owner->lock );
1293     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1294     {
1295         p_owner->cc.pb_present[i] |= pb_present[i];
1296         if( p_owner->cc.pp_decoder[i] )
1297             i_cc_decoder++;
1298     }
1299
1300     for( i = 0; i < 4; i++ )
1301     {
1302         if( !p_owner->cc.pp_decoder[i] )
1303             continue;
1304
1305         if( i_cc_decoder > 1 )
1306             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1307         else
1308             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1309         i_cc_decoder--;
1310     }
1311     vlc_mutex_unlock( &p_owner->lock );
1312 }
1313
1314 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1315                               int *pi_played_sum, int *pi_lost_sum )
1316 {
1317     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1318     vout_thread_t  *p_vout = p_owner->p_vout;
1319     bool b_first_buffered;
1320
1321     if( p_picture->date <= 0 )
1322     {
1323         msg_Warn( p_vout, "non-dated video buffer received" );
1324         *pi_lost_sum += 1;
1325         vout_DropPicture( p_vout, p_picture );
1326         return;
1327     }
1328
1329     /* */
1330     vlc_mutex_lock( &p_owner->lock );
1331
1332     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1333     {
1334         p_picture->p_next = NULL;
1335
1336         *p_owner->buffer.pp_picture_next = p_picture;
1337         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1338
1339         p_owner->buffer.i_count++;
1340         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1341             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1342         {
1343             p_owner->buffer.b_full = true;
1344             vlc_cond_signal( &p_owner->wait );
1345         }
1346     }
1347     b_first_buffered = p_owner->buffer.p_picture != NULL;
1348
1349     for( ;; b_first_buffered = false )
1350     {
1351         bool b_has_more = false;
1352
1353         bool b_reject;
1354
1355         DecoderWaitUnblock( p_dec, &b_reject );
1356
1357         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1358         {
1359             vlc_mutex_unlock( &p_owner->lock );
1360             return;
1361         }
1362         bool b_buffering_first = p_owner->b_buffering;
1363
1364         /* */
1365         if( p_owner->buffer.p_picture )
1366         {
1367             p_picture = p_owner->buffer.p_picture;
1368
1369             p_owner->buffer.p_picture = p_picture->p_next;
1370             p_owner->buffer.i_count--;
1371
1372             b_has_more = p_owner->buffer.p_picture != NULL;
1373             if( !b_has_more )
1374                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1375         }
1376
1377         /* */
1378         if( b_buffering_first )
1379         {
1380             assert( p_owner->buffer.b_first );
1381             assert( !p_owner->buffer.i_count );
1382             msg_Dbg( p_dec, "Received first picture" );
1383             p_owner->buffer.b_first = false;
1384             p_picture->b_force = true;
1385         }
1386
1387         const bool b_dated = p_picture->date > 0;
1388         int i_rate = INPUT_RATE_DEFAULT;
1389         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1390                       &i_rate, DECODER_BOGUS_VIDEO_DELAY, false );
1391
1392         vlc_mutex_unlock( &p_owner->lock );
1393
1394         /* */
1395         if( !p_picture->b_force && p_picture->date <= 0 )
1396             b_reject = true;
1397
1398         if( !b_reject )
1399         {
1400             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1401             {
1402                 /* Be sure to not display old picture after our own */
1403                 vout_Flush( p_vout, p_picture->date );
1404                 p_owner->i_last_rate = i_rate;
1405             }
1406             vout_DisplayPicture( p_vout, p_picture );
1407         }
1408         else
1409         {
1410             if( b_dated )
1411                 msg_Warn( p_vout, "early picture skipped" );
1412             else
1413                 msg_Warn( p_vout, "non-dated video buffer received" );
1414
1415             *pi_lost_sum += 1;
1416             vout_DropPicture( p_vout, p_picture );
1417         }
1418         int i_tmp_display;
1419         int i_tmp_lost;
1420         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1421
1422         *pi_played_sum += i_tmp_display;
1423         *pi_lost_sum += i_tmp_lost;
1424
1425         if( !b_has_more || b_buffering_first )
1426             break;
1427
1428         vlc_mutex_lock( &p_owner->lock );
1429         if( !p_owner->buffer.p_picture )
1430         {
1431             vlc_mutex_unlock( &p_owner->lock );
1432             break;
1433         }
1434     }
1435 }
1436
1437 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1438 {
1439     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1440     input_thread_t *p_input = p_owner->p_input;
1441     picture_t      *p_pic;
1442     int i_lost = 0;
1443     int i_decoded = 0;
1444     int i_displayed = 0;
1445
1446     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1447     {
1448         vout_thread_t  *p_vout = p_owner->p_vout;
1449         if( p_dec->b_die )
1450         {
1451             /* It prevent freezing VLC in case of broken decoder */
1452             vout_DropPicture( p_vout, p_pic );
1453             if( p_block )
1454                 block_Release( p_block );
1455             break;
1456         }
1457
1458         i_decoded++;
1459
1460         if( p_pic->date < p_owner->i_preroll_end )
1461         {
1462             vout_DropPicture( p_vout, p_pic );
1463             continue;
1464         }
1465
1466         if( p_owner->i_preroll_end > 0 )
1467         {
1468             msg_Dbg( p_dec, "End of video preroll" );
1469             if( p_vout )
1470                 vout_Flush( p_vout, 1 );
1471             /* */
1472             p_owner->i_preroll_end = -1;
1473         }
1474
1475         if( p_dec->pf_get_cc &&
1476             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1477             DecoderGetCc( p_dec, p_dec );
1478
1479         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1480     }
1481     if( i_decoded > 0 || i_lost > 0 || i_displayed > 0 )
1482     {
1483         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1484
1485         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video,
1486                              i_decoded, NULL );
1487         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_pictures,
1488                              i_lost , NULL);
1489
1490         stats_UpdateInteger( p_dec, p_input->p->counters.p_displayed_pictures,
1491                              i_displayed, NULL);
1492
1493         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1494     }
1495 }
1496
1497 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic,
1498                             bool b_telx )
1499 {
1500     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1501     vout_thread_t *p_vout = p_owner->p_spu_vout;
1502
1503     /* */
1504     if( p_subpic->i_start <= 0 )
1505     {
1506         msg_Warn( p_dec, "non-dated spu buffer received" );
1507         subpicture_Delete( p_subpic );
1508         return;
1509     }
1510
1511     /* */
1512     vlc_mutex_lock( &p_owner->lock );
1513
1514     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1515     {
1516         p_subpic->p_next = NULL;
1517
1518         *p_owner->buffer.pp_subpic_next = p_subpic;
1519         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1520
1521         p_owner->buffer.i_count++;
1522         /* XXX it is important to be full after the first one */
1523         if( p_owner->buffer.i_count > 0 )
1524         {
1525             p_owner->buffer.b_full = true;
1526             vlc_cond_signal( &p_owner->wait );
1527         }
1528     }
1529
1530     for( ;; )
1531     {
1532         bool b_has_more = false;
1533         bool b_reject;
1534         DecoderWaitUnblock( p_dec, &b_reject );
1535
1536         if( p_owner->b_buffering )
1537         {
1538             vlc_mutex_unlock( &p_owner->lock );
1539             return;
1540         }
1541
1542         /* */
1543         if( p_owner->buffer.p_subpic )
1544         {
1545             p_subpic = p_owner->buffer.p_subpic;
1546
1547             p_owner->buffer.p_subpic = p_subpic->p_next;
1548             p_owner->buffer.i_count--;
1549
1550             b_has_more = p_owner->buffer.p_subpic != NULL;
1551             if( !b_has_more )
1552                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1553         }
1554
1555         /* */
1556         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1557                       NULL, INT64_MAX, b_telx );
1558
1559         vlc_mutex_unlock( &p_owner->lock );
1560
1561         if( !b_reject )
1562             spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
1563         else
1564             subpicture_Delete( p_subpic );
1565
1566         if( !b_has_more )
1567             break;
1568         vlc_mutex_lock( &p_owner->lock );
1569         if( !p_owner->buffer.p_subpic )
1570         {
1571             vlc_mutex_unlock( &p_owner->lock );
1572             break;
1573         }
1574     }
1575 }
1576
1577 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block,
1578                              bool b_telx )
1579 {
1580     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1581
1582     assert( p_owner->p_clock );
1583     assert( !p_sout_block->p_next );
1584
1585     vlc_mutex_lock( &p_owner->lock );
1586
1587     if( p_owner->b_buffering || p_owner->buffer.p_block )
1588     {
1589         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1590
1591         p_owner->buffer.i_count++;
1592         /* XXX it is important to be full after the first one */
1593         if( p_owner->buffer.i_count > 0 )
1594         {
1595             p_owner->buffer.b_full = true;
1596             vlc_cond_signal( &p_owner->wait );
1597         }
1598     }
1599
1600     for( ;; )
1601     {
1602         bool b_has_more = false;
1603         bool b_reject;
1604         DecoderWaitUnblock( p_dec, &b_reject );
1605
1606         if( p_owner->b_buffering )
1607         {
1608             vlc_mutex_unlock( &p_owner->lock );
1609             return;
1610         }
1611
1612         /* */
1613         if( p_owner->buffer.p_block )
1614         {
1615             p_sout_block = p_owner->buffer.p_block;
1616
1617             p_owner->buffer.p_block = p_sout_block->p_next;
1618             p_owner->buffer.i_count--;
1619
1620             b_has_more = p_owner->buffer.p_block != NULL;
1621             if( !b_has_more )
1622                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1623         }
1624         p_sout_block->p_next = NULL;
1625
1626         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1627                       &p_sout_block->i_length,
1628                       &p_sout_block->i_rate, INT64_MAX, b_telx );
1629
1630         vlc_mutex_unlock( &p_owner->lock );
1631
1632         if( !b_reject )
1633             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block );
1634         else
1635             block_Release( p_sout_block );
1636
1637         if( !b_has_more )
1638             break;
1639         vlc_mutex_lock( &p_owner->lock );
1640         if( !p_owner->buffer.p_block )
1641         {
1642             vlc_mutex_unlock( &p_owner->lock );
1643             break;
1644         }
1645     }
1646 }
1647
1648 /* */
1649 static void DecoderFlushBuffering( decoder_t *p_dec )
1650 {
1651     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1652
1653     vlc_assert_locked( &p_owner->lock );
1654
1655     while( p_owner->buffer.p_picture )
1656     {
1657         picture_t *p_picture = p_owner->buffer.p_picture;
1658
1659         p_owner->buffer.p_picture = p_picture->p_next;
1660         p_owner->buffer.i_count--;
1661
1662         if( p_owner->p_vout )
1663             vout_DropPicture( p_owner->p_vout, p_picture );
1664
1665         if( !p_owner->buffer.p_picture )
1666             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1667     }
1668     while( p_owner->buffer.p_audio )
1669     {
1670         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1671
1672         p_owner->buffer.p_audio = p_audio->p_next;
1673         p_owner->buffer.i_count--;
1674
1675         aout_BufferFree( p_audio );
1676
1677         if( !p_owner->buffer.p_audio )
1678             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1679     }
1680     while( p_owner->buffer.p_subpic )
1681     {
1682         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1683
1684         p_owner->buffer.p_subpic = p_subpic->p_next;
1685         p_owner->buffer.i_count--;
1686
1687         subpicture_Delete( p_subpic );
1688
1689         if( !p_owner->buffer.p_subpic )
1690             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1691     }
1692     if( p_owner->buffer.p_block )
1693     {
1694         block_ChainRelease( p_owner->buffer.p_block );
1695
1696         p_owner->buffer.i_count = 0;
1697         p_owner->buffer.p_block = NULL;
1698         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1699     }
1700 }
1701
1702 /* This function process a block for sout
1703  */
1704 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1705 {
1706     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1707     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1708     block_t *p_sout_block;
1709
1710     while( ( p_sout_block =
1711                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1712     {
1713         if( !p_owner->p_sout_input )
1714         {
1715             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1716
1717             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1718             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1719             if( p_dec->fmt_in.psz_language )
1720             {
1721                 if( p_owner->sout.psz_language )
1722                     free( p_owner->sout.psz_language );
1723                 p_owner->sout.psz_language =
1724                     strdup( p_dec->fmt_in.psz_language );
1725             }
1726
1727             p_owner->p_sout_input =
1728                 sout_InputNew( p_owner->p_sout,
1729                                &p_owner->sout );
1730
1731             if( p_owner->p_sout_input == NULL )
1732             {
1733                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1734                          (char *)&p_owner->sout.i_codec );
1735                 p_dec->b_error = true;
1736
1737                 while( p_sout_block )
1738                 {
1739                     block_t *p_next = p_sout_block->p_next;
1740                     block_Release( p_sout_block );
1741                     p_sout_block = p_next;
1742                 }
1743                 break;
1744             }
1745         }
1746
1747         while( p_sout_block )
1748         {
1749             block_t *p_next = p_sout_block->p_next;
1750
1751             p_sout_block->p_next = NULL;
1752
1753             DecoderPlaySout( p_dec, p_sout_block, b_telx );
1754
1755             p_sout_block = p_next;
1756         }
1757
1758         /* For now it's enough, as only sout impact on this flag */
1759         if( p_owner->p_sout->i_out_pace_nocontrol > 0 &&
1760             p_owner->p_input->p->b_out_pace_control )
1761         {
1762             msg_Dbg( p_dec, "switching to sync mode" );
1763             p_owner->p_input->p->b_out_pace_control = false;
1764         }
1765         else if( p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
1766                  !p_owner->p_input->p->b_out_pace_control )
1767         {
1768             msg_Dbg( p_dec, "switching to async mode" );
1769             p_owner->p_input->p->b_out_pace_control = true;
1770         }
1771     }
1772 }
1773
1774 /* This function process a video block
1775  */
1776 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1777 {
1778     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1779
1780     if( p_owner->p_packetizer )
1781     {
1782         block_t *p_packetized_block;
1783         decoder_t *p_packetizer = p_owner->p_packetizer;
1784
1785         while( (p_packetized_block =
1786                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1787         {
1788             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1789             {
1790                 es_format_Clean( &p_dec->fmt_in );
1791                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1792             }
1793             if( p_packetizer->pf_get_cc )
1794                 DecoderGetCc( p_dec, p_packetizer );
1795
1796             while( p_packetized_block )
1797             {
1798                 block_t *p_next = p_packetized_block->p_next;
1799                 p_packetized_block->p_next = NULL;
1800
1801                 DecoderDecodeVideo( p_dec, p_packetized_block );
1802
1803                 p_packetized_block = p_next;
1804             }
1805         }
1806         /* The packetizer does not output a block that tell the decoder to flush
1807          * do it ourself */
1808         if( b_flush )
1809         {
1810             block_t *p_null = DecoderBlockFlushNew();
1811             if( p_null )
1812                 DecoderDecodeVideo( p_dec, p_null );
1813         }
1814     }
1815     else if( p_block )
1816     {
1817         DecoderDecodeVideo( p_dec, p_block );
1818     }
1819
1820     if( b_flush && p_owner->p_vout )
1821         vout_Flush( p_owner->p_vout, 1 );
1822 }
1823
1824 /* This function process a audio block
1825  */
1826 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1827 {
1828     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1829
1830     if( p_owner->p_packetizer )
1831     {
1832         block_t *p_packetized_block;
1833         decoder_t *p_packetizer = p_owner->p_packetizer;
1834
1835         while( (p_packetized_block =
1836                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1837         {
1838             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1839             {
1840                 es_format_Clean( &p_dec->fmt_in );
1841                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1842             }
1843
1844             while( p_packetized_block )
1845             {
1846                 block_t *p_next = p_packetized_block->p_next;
1847                 p_packetized_block->p_next = NULL;
1848
1849                 DecoderDecodeAudio( p_dec, p_packetized_block );
1850
1851                 p_packetized_block = p_next;
1852             }
1853         }
1854         /* The packetizer does not output a block that tell the decoder to flush
1855          * do it ourself */
1856         if( b_flush )
1857         {
1858             block_t *p_null = DecoderBlockFlushNew();
1859             if( p_null )
1860                 DecoderDecodeAudio( p_dec, p_null );
1861         }
1862     }
1863     else if( p_block )
1864     {
1865         DecoderDecodeAudio( p_dec, p_block );
1866     }
1867
1868     if( b_flush && p_owner->p_aout && p_owner->p_aout_input )
1869         aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1870 }
1871
1872 /* This function process a subtitle block
1873  */
1874 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1875 {
1876     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1877     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1878
1879     input_thread_t *p_input = p_owner->p_input;
1880     vout_thread_t *p_vout;
1881     subpicture_t *p_spu;
1882
1883     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1884     {
1885         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1886         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1887         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1888
1889         p_vout = input_ressource_HoldVout( p_input->p->p_ressource );
1890         if( p_vout && p_owner->p_spu_vout == p_vout )
1891         {
1892             /* Preroll does not work very well with subtitle */
1893             if( p_spu->i_start > 0 &&
1894                 p_spu->i_start < p_owner->i_preroll_end &&
1895                 ( p_spu->i_stop <= 0 || p_spu->i_stop < p_owner->i_preroll_end ) )
1896             {
1897                 subpicture_Delete( p_spu );
1898             }
1899             else
1900             {
1901                 DecoderPlaySpu( p_dec, p_spu, b_telx );
1902             }
1903         }
1904         else
1905         {
1906             subpicture_Delete( p_spu );
1907         }
1908         if( p_vout )
1909             vlc_object_release( p_vout );
1910     }
1911
1912     if( b_flush && p_owner->p_spu_vout )
1913     {
1914         p_vout = input_ressource_HoldVout( p_input->p->p_ressource );
1915
1916         if( p_vout && p_owner->p_spu_vout == p_vout )
1917             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1918                          p_owner->i_spu_channel );
1919
1920         if( p_vout )
1921             vlc_object_release( p_vout );
1922     }
1923 }
1924
1925 /* */
1926 static void DecoderProcessOnFlush( decoder_t *p_dec )
1927 {
1928     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1929
1930     vlc_mutex_lock( &p_owner->lock );
1931     DecoderFlushBuffering( p_dec );
1932     vlc_mutex_unlock( &p_owner->lock );
1933
1934     DecoderSignalFlushed( p_dec );
1935 }
1936 /**
1937  * Decode a block
1938  *
1939  * \param p_dec the decoder object
1940  * \param p_block the block to decode
1941  * \return VLC_SUCCESS or an error code
1942  */
1943 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1944 {
1945     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1946     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1947
1948     if( p_block && p_block->i_buffer <= 0 )
1949     {
1950         assert( !b_flush_request );
1951         block_Release( p_block );
1952         return;
1953     }
1954
1955 #ifdef ENABLE_SOUT
1956     if( vlc_internals( p_dec )->i_object_type == VLC_OBJECT_PACKETIZER )
1957     {
1958         if( p_block )
1959             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1960
1961         DecoderProcessSout( p_dec, p_block );
1962     }
1963     else
1964 #endif
1965     {
1966         bool b_flush = false;
1967
1968         if( p_block )
1969         {
1970             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1971             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1972
1973             b_flush = !b_flushing && b_flush_request;
1974
1975             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1976         }
1977
1978         if( p_dec->fmt_in.i_cat == AUDIO_ES )
1979         {
1980             DecoderProcessAudio( p_dec, p_block, b_flush );
1981         }
1982         else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1983         {
1984             DecoderProcessVideo( p_dec, p_block, b_flush );
1985         }
1986         else if( p_dec->fmt_in.i_cat == SPU_ES )
1987         {
1988             DecoderProcessSpu( p_dec, p_block, b_flush );
1989         }
1990         else
1991         {
1992             msg_Err( p_dec, "unknown ES format" );
1993             p_dec->b_error = true;
1994         }
1995     }
1996
1997     /* */
1998     if( b_flush_request )
1999         DecoderProcessOnFlush( p_dec );
2000 }
2001
2002 static void DecoderError( decoder_t *p_dec, block_t *p_block )
2003 {
2004     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
2005
2006     /* */
2007     if( p_block )
2008         block_Release( p_block );
2009
2010     if( b_flush_request )
2011         DecoderProcessOnFlush( p_dec );
2012 }
2013
2014
2015 /**
2016  * Destroys a decoder object
2017  *
2018  * \param p_dec the decoder object
2019  * \return nothing
2020  */
2021 static void DeleteDecoder( decoder_t * p_dec )
2022 {
2023     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2024
2025     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2026              (char*)&p_dec->fmt_in.i_codec,
2027              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2028
2029     /* Free all packets still in the decoder fifo. */
2030     block_FifoEmpty( p_owner->p_fifo );
2031     block_FifoRelease( p_owner->p_fifo );
2032
2033     /* */
2034     vlc_mutex_lock( &p_owner->lock );
2035     DecoderFlushBuffering( p_dec );
2036     vlc_mutex_unlock( &p_owner->lock );
2037
2038     /* Cleanup */
2039     if( p_owner->p_aout_input )
2040         aout_DecDelete( p_owner->p_aout, p_owner->p_aout_input );
2041     if( p_owner->p_aout )
2042     {
2043         input_ressource_RequestAout( p_owner->p_input->p->p_ressource,
2044                                      p_owner->p_aout );
2045         input_SendEventAout( p_owner->p_input );
2046         p_owner->p_aout = NULL;
2047     }
2048     if( p_owner->p_vout )
2049     {
2050         /* Hack to make sure all the the pictures are freed by the decoder
2051          * and that the vout is not paused anymore */
2052         vout_FixLeaks( p_owner->p_vout, true );
2053         if( p_owner->b_paused )
2054             vout_ChangePause( p_owner->p_vout, false, mdate() );
2055
2056         /* */
2057         input_ressource_RequestVout( p_owner->p_input->p->p_ressource, p_owner->p_vout, NULL, true );
2058         input_SendEventVout( p_owner->p_input );
2059     }
2060
2061 #ifdef ENABLE_SOUT
2062     if( p_owner->p_sout_input )
2063     {
2064         sout_InputDelete( p_owner->p_sout_input );
2065         es_format_Clean( &p_owner->sout );
2066     }
2067 #endif
2068
2069     if( p_dec->fmt_in.i_cat == SPU_ES )
2070     {
2071         vout_thread_t *p_vout;
2072
2073         p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2074         if( p_vout )
2075         {
2076             if( p_owner->p_spu_vout == p_vout )
2077                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR, p_owner->i_spu_channel );
2078             vlc_object_release( p_vout );
2079         }
2080     }
2081
2082     es_format_Clean( &p_dec->fmt_in );
2083     es_format_Clean( &p_dec->fmt_out );
2084     if( p_dec->p_description )
2085         vlc_meta_Delete( p_dec->p_description );
2086     es_format_Clean( &p_owner->fmt_description );
2087     if( p_owner->p_description )
2088         vlc_meta_Delete( p_owner->p_description );
2089
2090     if( p_owner->p_packetizer )
2091     {
2092         module_unneed( p_owner->p_packetizer,
2093                        p_owner->p_packetizer->p_module );
2094         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2095         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2096         if( p_owner->p_packetizer->p_description )
2097             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2098         vlc_object_detach( p_owner->p_packetizer );
2099         vlc_object_release( p_owner->p_packetizer );
2100     }
2101
2102     vlc_cond_destroy( &p_owner->wait );
2103     vlc_mutex_destroy( &p_owner->lock );
2104
2105     vlc_object_detach( p_dec );
2106
2107     free( p_owner );
2108 }
2109
2110 /*****************************************************************************
2111  * Buffers allocation callbacks for the decoders
2112  *****************************************************************************/
2113 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2114 {
2115     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2116
2117     vlc_assert_locked( &p_owner->lock );
2118
2119     p_owner->b_fmt_description = true;
2120
2121     /* Copy es_format */
2122     es_format_Clean( &p_owner->fmt_description );
2123     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2124
2125     /* Move p_description */
2126     if( p_owner->p_description && p_dec->p_description )
2127         vlc_meta_Delete( p_owner->p_description );
2128     p_owner->p_description = p_dec->p_description;
2129     p_dec->p_description = NULL;
2130 }
2131 static vout_thread_t *aout_request_vout( void *p_private,
2132                                          vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
2133 {
2134     decoder_t *p_dec = p_private;
2135     input_thread_t *p_input = p_dec->p_owner->p_input;
2136
2137     p_vout = input_ressource_RequestVout( p_input->p->p_ressource, p_vout, p_fmt, b_recyle );
2138     input_SendEventVout( p_input );
2139
2140     return p_vout;
2141 }
2142
2143 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2144 {
2145     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2146     aout_buffer_t *p_buffer;
2147
2148     if( p_owner->p_aout_input != NULL &&
2149         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
2150           p_dec->fmt_out.audio.i_original_channels !=
2151               p_owner->audio.i_original_channels ||
2152           p_dec->fmt_out.audio.i_bytes_per_frame !=
2153               p_owner->audio.i_bytes_per_frame ) )
2154     {
2155         aout_input_t *p_aout_input = p_owner->p_aout_input;
2156
2157         /* Parameters changed, restart the aout */
2158         vlc_mutex_lock( &p_owner->lock );
2159
2160         DecoderFlushBuffering( p_dec );
2161
2162         p_owner->p_aout_input = NULL;
2163         aout_DecDelete( p_owner->p_aout, p_aout_input );
2164
2165         vlc_mutex_unlock( &p_owner->lock );
2166     }
2167
2168     if( p_owner->p_aout_input == NULL )
2169     {
2170         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
2171         audio_sample_format_t format;
2172         aout_input_t *p_aout_input;
2173         aout_instance_t *p_aout;
2174         aout_request_vout_t request_vout;
2175
2176         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2177         p_owner->audio = p_dec->fmt_out.audio;
2178
2179         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2180         if( i_force_dolby &&
2181             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2182                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2183         {
2184             if( i_force_dolby == 1 )
2185             {
2186                 format.i_original_channels = format.i_original_channels |
2187                                              AOUT_CHAN_DOLBYSTEREO;
2188             }
2189             else /* i_force_dolby == 2 */
2190             {
2191                 format.i_original_channels = format.i_original_channels &
2192                                              ~AOUT_CHAN_DOLBYSTEREO;
2193             }
2194         }
2195
2196         request_vout.pf_request_vout = aout_request_vout;
2197         request_vout.p_private = p_dec;
2198
2199         p_aout = p_owner->p_aout;
2200         if( !p_aout )
2201             p_aout = input_ressource_RequestAout( p_owner->p_input->p->p_ressource, NULL );
2202         p_aout_input = aout_DecNew( p_dec, &p_aout,
2203                                     &format, &p_dec->fmt_out.audio_replay_gain, &request_vout );
2204
2205         vlc_mutex_lock( &p_owner->lock );
2206
2207         p_owner->p_aout = p_aout;
2208         p_owner->p_aout_input = p_aout_input;
2209         DecoderUpdateFormatLocked( p_dec );
2210
2211         vlc_mutex_unlock( &p_owner->lock );
2212
2213         input_SendEventAout( p_owner->p_input );
2214
2215         if( p_owner->p_aout_input == NULL )
2216         {
2217             msg_Err( p_dec, "failed to create audio output" );
2218             p_dec->b_error = true;
2219             return NULL;
2220         }
2221         p_dec->fmt_out.audio.i_bytes_per_frame =
2222             p_owner->audio.i_bytes_per_frame;
2223     }
2224
2225     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
2226
2227     return p_buffer;
2228 }
2229
2230 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
2231 {
2232     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2233
2234     aout_DecDeleteBuffer( p_owner->p_aout,
2235                           p_owner->p_aout_input, p_buffer );
2236 }
2237
2238
2239 int vout_CountPictureAvailable( vout_thread_t *p_vout );
2240
2241 static picture_t *vout_new_buffer( decoder_t *p_dec )
2242 {
2243     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2244
2245     if( p_owner->p_vout == NULL ||
2246         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2247         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2248         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
2249         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
2250     {
2251         vout_thread_t *p_vout;
2252
2253         if( !p_dec->fmt_out.video.i_width ||
2254             !p_dec->fmt_out.video.i_height )
2255         {
2256             /* Can't create a new vout without display size */
2257             return NULL;
2258         }
2259
2260         if( !p_dec->fmt_out.video.i_visible_width ||
2261             !p_dec->fmt_out.video.i_visible_height )
2262         {
2263             if( p_dec->fmt_in.video.i_visible_width &&
2264                 p_dec->fmt_in.video.i_visible_height )
2265             {
2266                 p_dec->fmt_out.video.i_visible_width =
2267                     p_dec->fmt_in.video.i_visible_width;
2268                 p_dec->fmt_out.video.i_visible_height =
2269                     p_dec->fmt_in.video.i_visible_height;
2270             }
2271             else
2272             {
2273                 p_dec->fmt_out.video.i_visible_width =
2274                     p_dec->fmt_out.video.i_width;
2275                 p_dec->fmt_out.video.i_visible_height =
2276                     p_dec->fmt_out.video.i_height;
2277             }
2278         }
2279
2280         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
2281             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2282         {
2283             p_dec->fmt_out.video.i_visible_height = 1080;
2284             p_dec->fmt_out.video.i_sar_num *= 135;
2285             p_dec->fmt_out.video.i_sar_den *= 136;
2286             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2287         }
2288
2289         if( !p_dec->fmt_out.video.i_sar_num ||
2290             !p_dec->fmt_out.video.i_sar_den )
2291         {
2292             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
2293               p_dec->fmt_out.video.i_visible_height;
2294
2295             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
2296               p_dec->fmt_out.video.i_visible_width;
2297         }
2298
2299         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
2300                      &p_dec->fmt_out.video.i_sar_den,
2301                      p_dec->fmt_out.video.i_sar_num,
2302                      p_dec->fmt_out.video.i_sar_den, 50000 );
2303
2304         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
2305         p_owner->video = p_dec->fmt_out.video;
2306
2307         vlc_mutex_lock( &p_owner->lock );
2308
2309         DecoderFlushBuffering( p_dec );
2310
2311         p_vout = p_owner->p_vout;
2312         p_owner->p_vout = NULL;
2313         vlc_mutex_unlock( &p_owner->lock );
2314
2315         p_vout = input_ressource_RequestVout( p_owner->p_input->p->p_ressource,
2316                                               p_vout, &p_dec->fmt_out.video, true );
2317
2318         vlc_mutex_lock( &p_owner->lock );
2319         p_owner->p_vout = p_vout;
2320
2321         DecoderUpdateFormatLocked( p_dec );
2322
2323         vlc_mutex_unlock( &p_owner->lock );
2324
2325         input_SendEventVout( p_owner->p_input );
2326         if( p_vout == NULL )
2327         {
2328             msg_Err( p_dec, "failed to create video output" );
2329             p_dec->b_error = true;
2330             return NULL;
2331         }
2332
2333         if( p_owner->video.i_rmask )
2334             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
2335         if( p_owner->video.i_gmask )
2336             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
2337         if( p_owner->video.i_bmask )
2338             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
2339     }
2340
2341     /* Get a new picture
2342      */
2343     for( ;; )
2344     {
2345         picture_t *p_picture;
2346
2347         if( p_dec->b_die || p_dec->b_error )
2348             return NULL;
2349
2350         /* The video filter chain required that there is always 1 free buffer
2351          * that it will use as temporary one. It will release the temporary
2352          * buffer once its work is done, so this check is safe even if we don't
2353          * lock around both count() and create().
2354          */
2355         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
2356         {
2357             p_picture = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
2358             if( p_picture )
2359                 return p_picture;
2360         }
2361
2362         if( DecoderIsFlushing( p_dec ) )
2363             return NULL;
2364
2365         /* */
2366         DecoderSignalBuffering( p_dec, true );
2367
2368         /* Check the decoder doesn't leak pictures */
2369         vout_FixLeaks( p_owner->p_vout, false );
2370
2371         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2372         msleep( VOUT_OUTMEM_SLEEP );
2373     }
2374 }
2375
2376 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2377 {
2378     vout_DropPicture( p_dec->p_owner->p_vout, p_pic );
2379 }
2380
2381 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2382 {
2383     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
2384 }
2385
2386 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2387 {
2388     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
2389 }
2390
2391 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
2392 {
2393     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2394     vout_thread_t *p_vout = NULL;
2395     subpicture_t *p_subpic;
2396     int i_attempts = 30;
2397
2398     while( i_attempts-- )
2399     {
2400         if( p_dec->b_die || p_dec->b_error )
2401             break;
2402
2403         p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2404         if( p_vout )
2405             break;
2406
2407         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2408     }
2409
2410     if( !p_vout )
2411     {
2412         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2413         return NULL;
2414     }
2415
2416     if( p_owner->p_spu_vout != p_vout )
2417     {
2418         vlc_mutex_lock( &p_owner->lock );
2419
2420         DecoderFlushBuffering( p_dec );
2421
2422         vlc_mutex_unlock( &p_owner->lock );
2423
2424         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
2425                      &p_owner->i_spu_channel );
2426         p_owner->i_spu_order = 0;
2427         p_owner->p_spu_vout = p_vout;
2428     }
2429
2430     p_subpic = subpicture_New();
2431     if( p_subpic )
2432     {
2433         p_subpic->i_channel = p_owner->i_spu_channel;
2434         p_subpic->i_order = p_owner->i_spu_order++;
2435         p_subpic->b_subtitle = true;
2436     }
2437
2438     vlc_object_release( p_vout );
2439
2440     return p_subpic;
2441 }
2442
2443 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2444 {
2445     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2446     vout_thread_t *p_vout = NULL;
2447
2448     p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2449     if( !p_vout || p_owner->p_spu_vout != p_vout )
2450     {
2451         if( p_vout )
2452             vlc_object_release( p_vout );
2453         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2454         return;
2455     }
2456
2457     subpicture_Delete( p_subpic );
2458
2459     vlc_object_release( p_vout );
2460 }
2461