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