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
  52 #include "../video_output/vout_control.h"
  53
  54 static decoder_t *CreateDecoder( input_thread_t *, es_format_t *, int, sout_instance_t *p_sout );
  55 static void       DeleteDecoder( decoder_t * );
  56
  57 static void      *DecoderThread( vlc_object_t * );
  58 static void       DecoderProcess( decoder_t *, block_t * );
  59 static void       DecoderError( decoder_t *p_dec, block_t *p_block );
  60 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  61 static void       DecoderFlush( decoder_t * );
  62 static void       DecoderSignalBuffering( decoder_t *, bool );
  63 static void       DecoderFlushBuffering( decoder_t * );
  64
  65 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  66
  67 /* Buffers allocation callbacks for the decoders */
  68 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  69 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  70
  71 static picture_t *vout_new_buffer( decoder_t * );
  72 static void vout_del_buffer( decoder_t *, picture_t * );
  73 static void vout_link_picture( decoder_t *, picture_t * );
  74 static void vout_unlink_picture( decoder_t *, picture_t * );
  75
  76 static subpicture_t *spu_new_buffer( decoder_t * );
  77 static void spu_del_buffer( decoder_t *, subpicture_t * );
  78
  79 static es_format_t null_es_format;
  80
  81 struct decoder_owner_sys_t
  82 {
  83     int64_t         i_preroll_end;
  84
  85     input_thread_t  *p_input;
  86     input_clock_t   *p_clock;
  87     int             i_last_rate;
  88
  89     vout_thread_t   *p_spu_vout;
  90     int              i_spu_channel;
  91     int64_t          i_spu_order;
  92
  93     sout_instance_t         *p_sout;
  94     sout_packetizer_input_t *p_sout_input;
  95
  96     /* Some decoders require already packetized data (ie. not truncated) */
  97     decoder_t *p_packetizer;
  98
  99     /* Current format in use by the output */
 100     video_format_t video;
 101     audio_format_t audio;
 102     es_format_t    sout;
 103
 104     /* */
 105     bool           b_fmt_description;
 106     es_format_t    fmt_description;
 107     vlc_meta_t     *p_description;
 108
 109     /* fifo */
 110     block_fifo_t *p_fifo;
 111
 112     /* Lock for communication with decoder thread */
 113     vlc_mutex_t lock;
 114     vlc_cond_t  wait;
 115
 116     /* -- These variables need locking on write(only) -- */
 117     aout_instance_t *p_aout;
 118     aout_input_t    *p_aout_input;
 119
 120     vout_thread_t   *p_vout;
 121
 122     /* -- Theses variables need locking on read *and* write -- */
 123     /* */
 124     /* Pause */
 125     bool b_paused;
 126     struct
 127     {
 128         mtime_t i_date;
 129         int     i_ignore;
 130     } pause;
 131
 132     /* Buffering */
 133     bool b_buffering;
 134     struct
 135     {
 136         bool b_first;
 137         bool b_full;
 138         int  i_count;
 139
 140         picture_t     *p_picture;
 141         picture_t     **pp_picture_next;
 142
 143         subpicture_t  *p_subpic;
 144         subpicture_t  **pp_subpic_next;
 145
 146         aout_buffer_t *p_audio;
 147         aout_buffer_t **pp_audio_next;
 148
 149         block_t       *p_block;
 150         block_t       **pp_block_next;
 151     } buffer;
 152
 153     /* Flushing */
 154     bool b_flushing;
 155
 156     /* CC */
 157     struct
 158     {
 159         bool b_supported;
 160         bool pb_present[4];
 161         decoder_t *pp_decoder[4];
 162     } cc;
 163
 164     /* Delay */
 165     mtime_t i_ts_delay;
 166 };
 167
 168 #define DECODER_MAX_BUFFERING_COUNT (4)
 169 #define DECODER_MAX_BUFFERING_AUDIO_DURATION (AOUT_MAX_PREPARE_TIME)
 170 #define DECODER_MAX_BUFFERING_VIDEO_DURATION (1*CLOCK_FREQ)
 171
 172 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 173  * a bogus PTS and won't be displayed */
 174 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 175
 176 /* */
 177 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 178
 179
 180 /*****************************************************************************
 181  * Public functions
 182  *****************************************************************************/
 183 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 184 {
 185     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 186     if( !p_picture )
 187         msg_Warn( p_decoder, "can't get output picture" );
 188     return p_picture;
 189 }
 190 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 191 {
 192     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 193 }
 194 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 195 {
 196     p_decoder->pf_picture_link( p_decoder, p_picture );
 197 }
 198 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 199 {
 200     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 201 }
 202
 203 aout_buffer_t *decoder_NewAudioBuffer( decoder_t *p_decoder, int i_size )
 204 {
 205     if( !p_decoder->pf_aout_buffer_new )
 206         return NULL;
 207     return p_decoder->pf_aout_buffer_new( p_decoder, i_size );
 208 }
 209 void decoder_DeleteAudioBuffer( decoder_t *p_decoder, aout_buffer_t *p_buffer )
 210 {
 211     p_decoder->pf_aout_buffer_del( p_decoder, p_buffer );
 212 }
 213
 214 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder )
 215 {
 216     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder );
 217     if( !p_subpicture )
 218         msg_Warn( p_decoder, "can't get output subpicture" );
 219     return p_subpicture;
 220 }
 221 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 222 {
 223     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 224 }
 225
 226 /* decoder_GetInputAttachments:
 227  */
 228 int decoder_GetInputAttachments( decoder_t *p_dec,
 229                                  input_attachment_t ***ppp_attachment,
 230                                  int *pi_attachment )
 231 {
 232     if( !p_dec->pf_get_attachments )
 233         return VLC_EGENERIC;
 234
 235     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 236 }
 237 /* decoder_GetDisplayDate:
 238  */
 239 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 240 {
 241     if( !p_dec->pf_get_display_date )
 242         return 0;
 243
 244     return p_dec->pf_get_display_date( p_dec, i_ts );
 245 }
 246 /* decoder_GetDisplayRate:
 247  */
 248 int decoder_GetDisplayRate( decoder_t *p_dec )
 249 {
 250     if( !p_dec->pf_get_display_rate )
 251         return INPUT_RATE_DEFAULT;
 252
 253     return p_dec->pf_get_display_rate( p_dec );
 254 }
 255
 256 /**
 257  * Spawns a new decoder thread
 258  *
 259  * \param p_input the input thread
 260  * \param p_es the es descriptor
 261  * \return the spawned decoder object
 262  */
 263 decoder_t *input_DecoderNew( input_thread_t *p_input,
 264                              es_format_t *fmt, input_clock_t *p_clock, sout_instance_t *p_sout  )
 265 {
 266     decoder_t *p_dec = NULL;
 267     int i_priority;
 268
 269 #ifdef ENABLE_SOUT
 270     /* If we are in sout mode, search for packetizer module */
 271     if( p_sout )
 272     {
 273         /* Create the decoder configuration structure */
 274         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
 275         if( p_dec == NULL )
 276         {
 277             msg_Err( p_input, "could not create packetizer" );
 278             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 279                             _("VLC could not open the packetizer module.") );
 280             return NULL;
 281         }
 282     }
 283     else
 284 #endif
 285     {
 286         /* Create the decoder configuration structure */
 287         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
 288         if( p_dec == NULL )
 289         {
 290             msg_Err( p_input, "could not create decoder" );
 291             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 292                             _("VLC could not open the decoder module.") );
 293             return NULL;
 294         }
 295     }
 296
 297     if( !p_dec->p_module )
 298     {
 299         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 300
 301         DeleteDecoder( p_dec );
 302         vlc_object_release( p_dec );
 303         return NULL;
 304     }
 305
 306     p_dec->p_owner->p_clock = p_clock;
 307
 308     if( fmt->i_cat == AUDIO_ES )
 309         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 310     else
 311         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 312
 313     /* Spawn the decoder thread */
 314     if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 315                            i_priority, false ) )
 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     return input_clock_GetTS( p_owner->p_clock, NULL, p_owner->p_input->i_pts_delay, i_ts );
 656 }
 657 static int DecoderGetDisplayRate( decoder_t *p_dec )
 658 {
 659     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 660
 661     if( !p_owner->p_clock )
 662         return INPUT_RATE_DEFAULT;
 663     return input_clock_GetRate( p_owner->p_clock );
 664 }
 665
 666 /* */
 667 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 668 {
 669     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 670              "VLC probably does not support this sound or video format.",
 671              (char*)&codec );
 672     intf_UserFatal( p_dec, false, _("No suitable decoder module"),
 673                     _("VLC does not support the audio or video format \"%4.4s\". "
 674                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 675 }
 676
 677
 678 /**
 679  * Create a decoder object
 680  *
 681  * \param p_input the input thread
 682  * \param p_es the es descriptor
 683  * \param i_object_type Object type as define in include/vlc_objects.h
 684  * \return the decoder object
 685  */
 686 static decoder_t * CreateDecoder( input_thread_t *p_input,
 687                                   es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
 688 {
 689     decoder_t *p_dec;
 690     decoder_owner_sys_t *p_owner;
 691     int i;
 692
 693     p_dec = vlc_object_create( p_input, i_object_type );
 694     if( p_dec == NULL )
 695         return NULL;
 696
 697     p_dec->pf_decode_audio = NULL;
 698     p_dec->pf_decode_video = NULL;
 699     p_dec->pf_decode_sub = NULL;
 700     p_dec->pf_get_cc = NULL;
 701     p_dec->pf_packetize = NULL;
 702
 703     /* Initialize the decoder */
 704     p_dec->p_module = NULL;
 705
 706     memset( &null_es_format, 0, sizeof(es_format_t) );
 707     es_format_Copy( &p_dec->fmt_in, fmt );
 708     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 709
 710     p_dec->p_description = NULL;
 711
 712     /* Allocate our private structure for the decoder */
 713     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 714     if( p_dec->p_owner == NULL )
 715     {
 716         vlc_object_release( p_dec );
 717         return NULL;
 718     }
 719     p_dec->p_owner->i_preroll_end = -1;
 720     p_dec->p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 721     p_dec->p_owner->p_input = p_input;
 722     p_dec->p_owner->p_aout = NULL;
 723     p_dec->p_owner->p_aout_input = NULL;
 724     p_dec->p_owner->p_vout = NULL;
 725     p_dec->p_owner->p_spu_vout = NULL;
 726     p_dec->p_owner->i_spu_channel = 0;
 727     p_dec->p_owner->i_spu_order = 0;
 728     p_dec->p_owner->p_sout = p_sout;
 729     p_dec->p_owner->p_sout_input = NULL;
 730     p_dec->p_owner->p_packetizer = NULL;
 731
 732     /* decoder fifo */
 733     if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
 734     {
 735         free( p_dec->p_owner );
 736         vlc_object_release( p_dec );
 737         return NULL;
 738     }
 739
 740     /* Set buffers allocation callbacks for the decoders */
 741     p_dec->pf_aout_buffer_new = aout_new_buffer;
 742     p_dec->pf_aout_buffer_del = aout_del_buffer;
 743     p_dec->pf_vout_buffer_new = vout_new_buffer;
 744     p_dec->pf_vout_buffer_del = vout_del_buffer;
 745     p_dec->pf_picture_link    = vout_link_picture;
 746     p_dec->pf_picture_unlink  = vout_unlink_picture;
 747     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 748     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 749     /* */
 750     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 751     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 752     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 753
 754     vlc_object_attach( p_dec, p_input );
 755
 756     /* Find a suitable decoder/packetizer module */
 757     if( i_object_type == VLC_OBJECT_DECODER )
 758         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
 759     else
 760         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
 761
 762     /* Check if decoder requires already packetized data */
 763     if( i_object_type == VLC_OBJECT_DECODER &&
 764         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 765     {
 766         p_dec->p_owner->p_packetizer =
 767             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 768         if( p_dec->p_owner->p_packetizer )
 769         {
 770             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 771                             &p_dec->fmt_in );
 772
 773             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 774                             &null_es_format );
 775
 776             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 777
 778             p_dec->p_owner->p_packetizer->p_module =
 779                 module_need( p_dec->p_owner->p_packetizer,
 780                              "packetizer", "$packetizer", false );
 781
 782             if( !p_dec->p_owner->p_packetizer->p_module )
 783             {
 784                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 785                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 786                 vlc_object_release( p_dec->p_owner->p_packetizer );
 787             }
 788         }
 789     }
 790
 791     /* Copy ourself the input replay gain */
 792     if( fmt->i_cat == AUDIO_ES )
 793     {
 794         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 795         {
 796             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 797             {
 798                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 799                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 800             }
 801             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 802             {
 803                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 804                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 805             }
 806         }
 807     }
 808
 809     /* */
 810     vlc_mutex_init( &p_owner->lock );
 811     vlc_cond_init( &p_owner->wait );
 812
 813     p_owner->b_fmt_description = false;
 814     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 815     p_owner->p_description = NULL;
 816
 817     p_owner->b_paused = false;
 818     p_owner->pause.i_date = 0;
 819     p_owner->pause.i_ignore = 0;
 820
 821     p_owner->b_buffering = false;
 822     p_owner->buffer.b_first = true;
 823     p_owner->buffer.b_full = false;
 824     p_owner->buffer.i_count = 0;
 825     p_owner->buffer.p_picture = NULL;
 826     p_owner->buffer.p_subpic = NULL;
 827     p_owner->buffer.p_audio = NULL;
 828     p_owner->buffer.p_block = NULL;
 829
 830     p_owner->b_flushing = false;
 831
 832     /* */
 833     p_owner->cc.b_supported = false;
 834     if( i_object_type == VLC_OBJECT_DECODER )
 835     {
 836         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 837             p_owner->cc.b_supported = true;
 838         if( p_dec->pf_get_cc )
 839             p_owner->cc.b_supported = true;
 840     }
 841
 842     for( i = 0; i < 4; i++ )
 843     {
 844         p_owner->cc.pb_present[i] = false;
 845         p_owner->cc.pp_decoder[i] = NULL;
 846     }
 847     p_owner->i_ts_delay = 0;
 848     return p_dec;
 849 }
 850
 851 /**
 852  * The decoding main loop
 853  *
 854  * \param p_dec the decoder
 855  */
 856 static void *DecoderThread( vlc_object_t *p_this )
 857 {
 858     decoder_t *p_dec = (decoder_t *)p_this;
 859     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 860
 861     /* The decoder's main loop */
 862     for( ;; )
 863     {
 864         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 865         /* Make sure there is no cancellation point other than this one^^.
 866          * If you need one, be sure to push cleanup of p_block. */
 867         DecoderSignalBuffering( p_dec, p_block == NULL );
 868
 869         if( p_block )
 870         {
 871             int canc = vlc_savecancel();
 872
 873             if( p_dec->b_error )
 874                 DecoderError( p_dec, p_block );
 875             else
 876                 DecoderProcess( p_dec, p_block );
 877
 878             vlc_restorecancel( canc );
 879         }
 880     }
 881
 882     DecoderSignalBuffering( p_dec, true );
 883     return NULL;
 884 }
 885
 886 static void DecoderFlush( decoder_t *p_dec )
 887 {
 888     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 889     block_t *p_null;
 890
 891     vlc_assert_locked( &p_owner->lock );
 892
 893     /* Empty the fifo */
 894     block_FifoEmpty( p_owner->p_fifo );
 895
 896     /* Monitor for flush end */
 897     p_owner->b_flushing = true;
 898     vlc_cond_signal( &p_owner->wait );
 899
 900     /* Send a special block */
 901     p_null = block_New( p_dec, 128 );
 902     if( !p_null )
 903         return;
 904     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 905     p_null->i_flags |= BLOCK_FLAG_CORE_FLUSH;
 906     if( !p_dec->fmt_in.b_packetized )
 907         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 908     memset( p_null->p_buffer, 0, p_null->i_buffer );
 909
 910     input_DecoderDecode( p_dec, p_null );
 911
 912     /* */
 913     while( vlc_object_alive( p_dec ) && p_owner->b_flushing )
 914         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 915 }
 916
 917 static void DecoderSignalFlushed( decoder_t *p_dec )
 918 {
 919     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 920
 921     vlc_mutex_lock( &p_owner->lock );
 922
 923     if( p_owner->b_flushing )
 924     {
 925         p_owner->b_flushing = false;
 926         vlc_cond_signal( &p_owner->wait );
 927     }
 928
 929     vlc_mutex_unlock( &p_owner->lock );
 930 }
 931
 932 static void DecoderSignalBuffering( decoder_t *p_dec, bool b_full )
 933 {
 934     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 935
 936     vlc_mutex_lock( &p_owner->lock );
 937
 938     if( p_owner->b_buffering )
 939     {
 940         if( b_full )
 941             p_owner->buffer.b_full = true;
 942         vlc_cond_signal( &p_owner->wait );
 943     }
 944
 945     vlc_mutex_unlock( &p_owner->lock );
 946 }
 947
 948 static bool DecoderIsFlushing( decoder_t *p_dec )
 949 {
 950     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 951     bool b_flushing;
 952
 953     vlc_mutex_lock( &p_owner->lock );
 954
 955     b_flushing = p_owner->b_flushing;
 956
 957     vlc_mutex_unlock( &p_owner->lock );
 958
 959     return b_flushing;
 960 }
 961
 962 static void DecoderWaitUnblock( decoder_t *p_dec, bool *pb_reject )
 963 {
 964     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 965
 966     vlc_assert_locked( &p_owner->lock );
 967
 968     while( !p_owner->b_flushing )
 969     {
 970         if( p_owner->b_paused )
 971         {
 972             if( p_owner->b_buffering && !p_owner->buffer.b_full )
 973                 break;
 974             if( p_owner->pause.i_ignore > 0 )
 975             {
 976                 p_owner->pause.i_ignore--;
 977                 break;
 978             }
 979         }
 980         else
 981         {
 982             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
 983                 break;
 984         }
 985         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 986     }
 987
 988     if( pb_reject )
 989         *pb_reject = p_owner->b_flushing;
 990 }
 991
 992 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 993 {
 994     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 995
 996     vlc_assert_locked( &p_owner->lock );
 997
 998     /* XXX only audio and video output have to be paused.
 999      * - for sout it is useless
1000      * - for subs, it is done by the vout
1001      */
1002     if( p_dec->fmt_in.i_cat == AUDIO_ES )
1003     {
1004         if( p_owner->p_aout && p_owner->p_aout_input )
1005             aout_DecChangePause( p_owner->p_aout, p_owner->p_aout_input,
1006                                  b_paused, i_date );
1007     }
1008     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1009     {
1010         if( p_owner->p_vout )
1011             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1012     }
1013 }
1014 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1015 {
1016     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1017         *pi_preroll = INT64_MAX;
1018     else if( p->i_pts > 0 )
1019         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1020     else if( p->i_dts > 0 )
1021         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1022 }
1023
1024 static mtime_t DecoderTeletextFixTs( mtime_t i_ts, mtime_t i_ts_delay )
1025 {
1026     mtime_t current_date = mdate();
1027
1028     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
1029     if( !i_ts || i_ts > current_date + 10000000 || i_ts < current_date )
1030     {
1031         /* ETSI EN 300 472 Annex A : do not take into account the PTS
1032          * for teletext streams. */
1033         return current_date + 400000 + i_ts_delay;
1034     }
1035     return i_ts;
1036 }
1037
1038 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1039                           mtime_t *pi_duration, int *pi_rate, mtime_t *pi_delay, bool b_telx )
1040 {
1041     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1042     input_clock_t   *p_clock = p_owner->p_clock;
1043     int i_rate = 0;
1044
1045     vlc_assert_locked( &p_owner->lock );
1046
1047     const mtime_t i_ts_delay = p_owner->p_input->i_pts_delay;
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
1054         if( *pi_ts0 > 0 )
1055             *pi_ts0 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1056                                          *pi_ts0 + i_es_delay );
1057         if( pi_ts1 && *pi_ts1 > 0 )
1058             *pi_ts1 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1059                                          *pi_ts1 + i_es_delay );
1060
1061         /* Do not create ephemere data because of rounding errors */
1062         if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1063             *pi_ts1 += 1;
1064
1065         if( i_rate <= 0 )
1066             i_rate = input_clock_GetRate( p_clock );
1067
1068         if( pi_duration )
1069             *pi_duration = ( *pi_duration * i_rate +
1070                                     INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
1071
1072         if( pi_rate )
1073             *pi_rate = i_rate;
1074
1075         if( b_telx )
1076         {
1077             *pi_ts0 = DecoderTeletextFixTs( *pi_ts0, i_ts_delay );
1078             if( pi_ts1 && *pi_ts1 <= 0 )
1079                 *pi_ts1 = *pi_ts0;
1080         }
1081     }
1082     if( pi_delay )
1083     {
1084         const int r = i_rate > 0 ? i_rate : INPUT_RATE_DEFAULT;
1085         *pi_delay = i_ts_delay + i_es_delay * r / INPUT_RATE_DEFAULT;
1086     }
1087 }
1088
1089 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1090                               int *pi_played_sum, int *pi_lost_sum )
1091 {
1092     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1093     aout_instance_t *p_aout = p_owner->p_aout;
1094     aout_input_t    *p_aout_input = p_owner->p_aout_input;
1095
1096     /* */
1097     if( p_audio->start_date <= 0 )
1098     {
1099         msg_Warn( p_dec, "non-dated audio buffer received" );
1100         *pi_lost_sum += 1;
1101         aout_BufferFree( p_audio );
1102         return;
1103     }
1104
1105     /* */
1106     vlc_mutex_lock( &p_owner->lock );
1107
1108     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1109     {
1110         p_audio->p_next = NULL;
1111
1112         *p_owner->buffer.pp_audio_next = p_audio;
1113         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1114
1115         p_owner->buffer.i_count++;
1116         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1117             p_audio->start_date - p_owner->buffer.p_audio->start_date > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1118         {
1119             p_owner->buffer.b_full = true;
1120             vlc_cond_signal( &p_owner->wait );
1121         }
1122     }
1123
1124     for( ;; )
1125     {
1126         bool b_has_more = false;
1127         bool b_reject;
1128         DecoderWaitUnblock( p_dec, &b_reject );
1129
1130         if( p_owner->b_buffering )
1131         {
1132             vlc_mutex_unlock( &p_owner->lock );
1133             return;
1134         }
1135
1136         /* */
1137         if( p_owner->buffer.p_audio )
1138         {
1139             p_audio = p_owner->buffer.p_audio;
1140
1141             p_owner->buffer.p_audio = p_audio->p_next;
1142             p_owner->buffer.i_count--;
1143
1144             b_has_more = p_owner->buffer.p_audio != NULL;
1145             if( !b_has_more )
1146                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1147         }
1148
1149         /* */
1150         int i_rate = INPUT_RATE_DEFAULT;
1151         mtime_t i_delay;
1152
1153         DecoderFixTs( p_dec, &p_audio->start_date, &p_audio->end_date, NULL,
1154                       &i_rate, &i_delay, false );
1155
1156         vlc_mutex_unlock( &p_owner->lock );
1157
1158         /* */
1159         const mtime_t i_max_date = mdate() + i_delay + AOUT_MAX_ADVANCE_TIME;
1160
1161         if( !p_aout || !p_aout_input ||
1162             p_audio->start_date <= 0 || p_audio->start_date > i_max_date ||
1163             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1164             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1165             b_reject = true;
1166
1167         /* Do not wait against unprotected date */
1168         const mtime_t i_deadline = p_audio->start_date - AOUT_MAX_PREPARE_TIME;
1169         while( !b_reject && i_deadline > mdate() )
1170         {
1171             vlc_mutex_lock( &p_owner->lock );
1172             if( p_owner->b_flushing || p_dec->b_die )
1173             {
1174                 b_reject = true;
1175                 vlc_mutex_unlock( &p_owner->lock );
1176                 break;
1177             }
1178             vlc_cond_timedwait( &p_owner->wait, &p_owner->lock, i_deadline );
1179             vlc_mutex_unlock( &p_owner->lock );
1180         }
1181
1182         if( !b_reject )
1183         {
1184             if( !aout_DecPlay( p_aout, p_aout_input, p_audio, i_rate ) )
1185                 *pi_played_sum += 1;
1186             *pi_lost_sum += aout_DecGetResetLost( p_aout, p_aout_input );
1187         }
1188         else
1189         {
1190             if( p_audio->start_date <= 0 )
1191             {
1192                 msg_Warn( p_dec, "non-dated audio buffer received" );
1193             }
1194             else if( p_audio->start_date > i_max_date )
1195             {
1196                 msg_Warn( p_aout, "received buffer in the future (%"PRId64")",
1197                           p_audio->start_date - mdate() );
1198             }
1199             *pi_lost_sum += 1;
1200             aout_BufferFree( p_audio );
1201         }
1202
1203         if( !b_has_more )
1204             break;
1205
1206         vlc_mutex_lock( &p_owner->lock );
1207         if( !p_owner->buffer.p_audio )
1208         {
1209             vlc_mutex_unlock( &p_owner->lock );
1210             break;
1211         }
1212     }
1213 }
1214
1215 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1216 {
1217     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1218     input_thread_t  *p_input = p_owner->p_input;
1219     aout_buffer_t   *p_aout_buf;
1220     int i_decoded = 0;
1221     int i_lost = 0;
1222     int i_played = 0;
1223
1224     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1225     {
1226         aout_instance_t *p_aout = p_owner->p_aout;
1227         aout_input_t    *p_aout_input = p_owner->p_aout_input;
1228         int i_lost = 0;
1229         int i_played;
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         int i_rate = INPUT_RATE_DEFAULT;
1388         mtime_t i_delay;
1389         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1390                       &i_rate, &i_delay, false );
1391
1392         vlc_mutex_unlock( &p_owner->lock );
1393
1394         /* */
1395         const mtime_t i_max_date = mdate() + i_delay + DECODER_BOGUS_VIDEO_DELAY;
1396
1397         if( !p_picture->b_force && ( p_picture->date <= 0 || p_picture->date >= i_max_date ) )
1398             b_reject = true;
1399
1400         if( !b_reject )
1401         {
1402             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1403             {
1404                 /* Be sure to not display old picture after our own */
1405                 vout_Flush( p_vout, p_picture->date );
1406                 p_owner->i_last_rate = i_rate;
1407             }
1408             vout_DisplayPicture( p_vout, p_picture );
1409         }
1410         else
1411         {
1412             if( p_picture->date <= 0 )
1413             {
1414                 msg_Warn( p_vout, "non-dated video buffer received" );
1415             }
1416             else
1417             {
1418                 msg_Warn( p_vout, "early picture skipped (%"PRId64")",
1419                           p_picture->date - mdate() );
1420             }
1421             *pi_lost_sum += 1;
1422             vout_DropPicture( p_vout, p_picture );
1423         }
1424         int i_tmp_display;
1425         int i_tmp_lost;
1426         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1427
1428         *pi_played_sum += i_tmp_display;
1429         *pi_lost_sum += i_tmp_lost;
1430
1431         if( !b_has_more || b_buffering_first )
1432             break;
1433
1434         vlc_mutex_lock( &p_owner->lock );
1435         if( !p_owner->buffer.p_picture )
1436         {
1437             vlc_mutex_unlock( &p_owner->lock );
1438             break;
1439         }
1440     }
1441 }
1442
1443 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1444 {
1445     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1446     input_thread_t *p_input = p_owner->p_input;
1447     picture_t      *p_pic;
1448     int i_lost = 0;
1449     int i_decoded = 0;
1450     int i_displayed = 0;
1451
1452     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1453     {
1454         vout_thread_t  *p_vout = p_owner->p_vout;
1455         if( p_dec->b_die )
1456         {
1457             /* It prevent freezing VLC in case of broken decoder */
1458             vout_DropPicture( p_vout, p_pic );
1459             if( p_block )
1460                 block_Release( p_block );
1461             break;
1462         }
1463
1464         i_decoded++;
1465
1466         if( p_pic->date < p_owner->i_preroll_end )
1467         {
1468             vout_DropPicture( p_vout, p_pic );
1469             continue;
1470         }
1471
1472         if( p_owner->i_preroll_end > 0 )
1473         {
1474             msg_Dbg( p_dec, "End of video preroll" );
1475             if( p_vout )
1476                 vout_Flush( p_vout, 1 );
1477             /* */
1478             p_owner->i_preroll_end = -1;
1479         }
1480
1481         if( p_dec->pf_get_cc &&
1482             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1483             DecoderGetCc( p_dec, p_dec );
1484
1485         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1486     }
1487     if( i_decoded > 0 || i_lost > 0 || i_displayed > 0 )
1488     {
1489         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1490
1491         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video,
1492                              i_decoded, NULL );
1493         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_pictures,
1494                              i_lost , NULL);
1495
1496         stats_UpdateInteger( p_dec, p_input->p->counters.p_displayed_pictures,
1497                              i_displayed, NULL);
1498
1499         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1500     }
1501 }
1502
1503 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic,
1504                             bool b_telx )
1505 {
1506     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1507     vout_thread_t *p_vout = p_owner->p_spu_vout;
1508
1509     /* */
1510     if( p_subpic->i_start <= 0 )
1511     {
1512         msg_Warn( p_dec, "non-dated spu buffer received" );
1513         subpicture_Delete( p_subpic );
1514         return;
1515     }
1516
1517     /* */
1518     vlc_mutex_lock( &p_owner->lock );
1519
1520     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1521     {
1522         p_subpic->p_next = NULL;
1523
1524         *p_owner->buffer.pp_subpic_next = p_subpic;
1525         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1526
1527         p_owner->buffer.i_count++;
1528         /* XXX it is important to be full after the first one */
1529         if( p_owner->buffer.i_count > 0 )
1530         {
1531             p_owner->buffer.b_full = true;
1532             vlc_cond_signal( &p_owner->wait );
1533         }
1534     }
1535
1536     for( ;; )
1537     {
1538         bool b_has_more = false;
1539         bool b_reject;
1540         DecoderWaitUnblock( p_dec, &b_reject );
1541
1542         if( p_owner->b_buffering )
1543         {
1544             vlc_mutex_unlock( &p_owner->lock );
1545             return;
1546         }
1547
1548         /* */
1549         if( p_owner->buffer.p_subpic )
1550         {
1551             p_subpic = p_owner->buffer.p_subpic;
1552
1553             p_owner->buffer.p_subpic = p_subpic->p_next;
1554             p_owner->buffer.i_count--;
1555
1556             b_has_more = p_owner->buffer.p_subpic != NULL;
1557             if( !b_has_more )
1558                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1559         }
1560
1561         /* */
1562         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1563                       NULL, NULL, b_telx );
1564
1565         vlc_mutex_unlock( &p_owner->lock );
1566
1567         if( !b_reject )
1568             spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
1569         else
1570             subpicture_Delete( p_subpic );
1571
1572         if( !b_has_more )
1573             break;
1574         vlc_mutex_lock( &p_owner->lock );
1575         if( !p_owner->buffer.p_subpic )
1576         {
1577             vlc_mutex_unlock( &p_owner->lock );
1578             break;
1579         }
1580     }
1581 }
1582
1583 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block,
1584                              bool b_telx )
1585 {
1586     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1587
1588     assert( p_owner->p_clock );
1589     assert( !p_sout_block->p_next );
1590
1591     vlc_mutex_lock( &p_owner->lock );
1592
1593     if( p_owner->b_buffering || p_owner->buffer.p_block )
1594     {
1595         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1596
1597         p_owner->buffer.i_count++;
1598         /* XXX it is important to be full after the first one */
1599         if( p_owner->buffer.i_count > 0 )
1600         {
1601             p_owner->buffer.b_full = true;
1602             vlc_cond_signal( &p_owner->wait );
1603         }
1604     }
1605
1606     for( ;; )
1607     {
1608         bool b_has_more = false;
1609         bool b_reject;
1610         DecoderWaitUnblock( p_dec, &b_reject );
1611
1612         if( p_owner->b_buffering )
1613         {
1614             vlc_mutex_unlock( &p_owner->lock );
1615             return;
1616         }
1617
1618         /* */
1619         if( p_owner->buffer.p_block )
1620         {
1621             p_sout_block = p_owner->buffer.p_block;
1622
1623             p_owner->buffer.p_block = p_sout_block->p_next;
1624             p_owner->buffer.i_count--;
1625
1626             b_has_more = p_owner->buffer.p_block != NULL;
1627             if( !b_has_more )
1628                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1629         }
1630         p_sout_block->p_next = NULL;
1631
1632         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1633                       &p_sout_block->i_length,
1634                       &p_sout_block->i_rate, NULL, b_telx );
1635
1636         vlc_mutex_unlock( &p_owner->lock );
1637
1638         if( !b_reject )
1639             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block );
1640         else
1641             block_Release( p_sout_block );
1642
1643         if( !b_has_more )
1644             break;
1645         vlc_mutex_lock( &p_owner->lock );
1646         if( !p_owner->buffer.p_block )
1647         {
1648             vlc_mutex_unlock( &p_owner->lock );
1649             break;
1650         }
1651     }
1652 }
1653
1654 /* */
1655 static void DecoderFlushBuffering( decoder_t *p_dec )
1656 {
1657     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1658
1659     vlc_assert_locked( &p_owner->lock );
1660
1661     while( p_owner->buffer.p_picture )
1662     {
1663         picture_t *p_picture = p_owner->buffer.p_picture;
1664
1665         p_owner->buffer.p_picture = p_picture->p_next;
1666         p_owner->buffer.i_count--;
1667
1668         if( p_owner->p_vout )
1669             vout_DropPicture( p_owner->p_vout, p_picture );
1670
1671         if( !p_owner->buffer.p_picture )
1672             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1673     }
1674     while( p_owner->buffer.p_audio )
1675     {
1676         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1677
1678         p_owner->buffer.p_audio = p_audio->p_next;
1679         p_owner->buffer.i_count--;
1680
1681         aout_BufferFree( p_audio );
1682
1683         if( !p_owner->buffer.p_audio )
1684             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1685     }
1686     while( p_owner->buffer.p_subpic )
1687     {
1688         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1689
1690         p_owner->buffer.p_subpic = p_subpic->p_next;
1691         p_owner->buffer.i_count--;
1692
1693         subpicture_Delete( p_subpic );
1694
1695         if( !p_owner->buffer.p_subpic )
1696             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1697     }
1698     if( p_owner->buffer.p_block )
1699     {
1700         block_ChainRelease( p_owner->buffer.p_block );
1701
1702         p_owner->buffer.i_count = 0;
1703         p_owner->buffer.p_block = NULL;
1704         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1705     }
1706 }
1707
1708 /* This function process a block for sout
1709  */
1710 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1711 {
1712     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1713     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1714     block_t *p_sout_block;
1715
1716     while( ( p_sout_block =
1717                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1718     {
1719         if( !p_owner->p_sout_input )
1720         {
1721             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1722
1723             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1724             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1725             if( p_dec->fmt_in.psz_language )
1726             {
1727                 if( p_owner->sout.psz_language )
1728                     free( p_owner->sout.psz_language );
1729                 p_owner->sout.psz_language =
1730                     strdup( p_dec->fmt_in.psz_language );
1731             }
1732
1733             p_owner->p_sout_input =
1734                 sout_InputNew( p_owner->p_sout,
1735                                &p_owner->sout );
1736
1737             if( p_owner->p_sout_input == NULL )
1738             {
1739                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1740                          (char *)&p_owner->sout.i_codec );
1741                 p_dec->b_error = true;
1742
1743                 while( p_sout_block )
1744                 {
1745                     block_t *p_next = p_sout_block->p_next;
1746                     block_Release( p_sout_block );
1747                     p_sout_block = p_next;
1748                 }
1749                 break;
1750             }
1751         }
1752
1753         while( p_sout_block )
1754         {
1755             block_t *p_next = p_sout_block->p_next;
1756
1757             p_sout_block->p_next = NULL;
1758
1759             DecoderPlaySout( p_dec, p_sout_block, b_telx );
1760
1761             p_sout_block = p_next;
1762         }
1763
1764         /* For now it's enough, as only sout impact on this flag */
1765         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 sync mode" );
1769             p_owner->p_input->p->b_out_pace_control = false;
1770         }
1771         else if( p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
1772                  !p_owner->p_input->p->b_out_pace_control )
1773         {
1774             msg_Dbg( p_dec, "switching to async mode" );
1775             p_owner->p_input->p->b_out_pace_control = true;
1776         }
1777     }
1778 }
1779
1780 /* This function process a video block
1781  */
1782 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1783 {
1784     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1785
1786     if( p_owner->p_packetizer )
1787     {
1788         block_t *p_packetized_block;
1789         decoder_t *p_packetizer = p_owner->p_packetizer;
1790
1791         while( (p_packetized_block =
1792                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1793         {
1794             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1795             {
1796                 es_format_Clean( &p_dec->fmt_in );
1797                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1798             }
1799             if( p_packetizer->pf_get_cc )
1800                 DecoderGetCc( p_dec, p_packetizer );
1801
1802             while( p_packetized_block )
1803             {
1804                 block_t *p_next = p_packetized_block->p_next;
1805                 p_packetized_block->p_next = NULL;
1806
1807                 DecoderDecodeVideo( p_dec, p_packetized_block );
1808
1809                 p_packetized_block = p_next;
1810             }
1811         }
1812     }
1813     else if( p_block )
1814     {
1815         DecoderDecodeVideo( p_dec, p_block );
1816     }
1817
1818     if( b_flush && p_owner->p_vout )
1819         vout_Flush( p_owner->p_vout, 1 );
1820 }
1821
1822 /* This function process a audio block
1823  */
1824 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1825 {
1826     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1827
1828     if( p_owner->p_packetizer )
1829     {
1830         block_t *p_packetized_block;
1831         decoder_t *p_packetizer = p_owner->p_packetizer;
1832
1833         while( (p_packetized_block =
1834                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1835         {
1836             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1837             {
1838                 es_format_Clean( &p_dec->fmt_in );
1839                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1840             }
1841
1842             while( p_packetized_block )
1843             {
1844                 block_t *p_next = p_packetized_block->p_next;
1845                 p_packetized_block->p_next = NULL;
1846
1847                 DecoderDecodeAudio( p_dec, p_packetized_block );
1848
1849                 p_packetized_block = p_next;
1850             }
1851         }
1852     }
1853     else if( p_block )
1854     {
1855         DecoderDecodeAudio( p_dec, p_block );
1856     }
1857
1858     if( b_flush && p_owner->p_aout && p_owner->p_aout_input )
1859         aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1860 }
1861
1862 /* This function process a subtitle block
1863  */
1864 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1865 {
1866     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1867     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1868
1869     input_thread_t *p_input = p_owner->p_input;
1870     vout_thread_t *p_vout;
1871     subpicture_t *p_spu;
1872
1873     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1874     {
1875         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1876         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1877         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1878
1879         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1880         if( p_vout && p_owner->p_spu_vout == p_vout )
1881         {
1882             /* Preroll does not work very well with subtitle */
1883             if( p_spu->i_start > 0 &&
1884                 p_spu->i_start < p_owner->i_preroll_end &&
1885                 ( p_spu->i_stop <= 0 || p_spu->i_stop < p_owner->i_preroll_end ) )
1886             {
1887                 subpicture_Delete( p_spu );
1888             }
1889             else
1890             {
1891                 DecoderPlaySpu( p_dec, p_spu, b_telx );
1892             }
1893         }
1894         else
1895         {
1896             subpicture_Delete( p_spu );
1897         }
1898         if( p_vout )
1899             vlc_object_release( p_vout );
1900     }
1901
1902     if( b_flush && p_owner->p_spu_vout )
1903     {
1904         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1905
1906         if( p_vout && p_owner->p_spu_vout == p_vout )
1907             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1908                          p_owner->i_spu_channel );
1909
1910         if( p_vout )
1911             vlc_object_release( p_vout );
1912     }
1913 }
1914
1915 /* */
1916 static void DecoderProcessOnFlush( decoder_t *p_dec )
1917 {
1918     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1919
1920     vlc_mutex_lock( &p_owner->lock );
1921     DecoderFlushBuffering( p_dec );
1922     vlc_mutex_unlock( &p_owner->lock );
1923
1924     DecoderSignalFlushed( p_dec );
1925 }
1926 /**
1927  * Decode a block
1928  *
1929  * \param p_dec the decoder object
1930  * \param p_block the block to decode
1931  * \return VLC_SUCCESS or an error code
1932  */
1933 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1934 {
1935     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1936     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1937
1938     if( p_block && p_block->i_buffer <= 0 )
1939     {
1940         assert( !b_flush_request );
1941         block_Release( p_block );
1942         return;
1943     }
1944
1945 #ifdef ENABLE_SOUT
1946     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
1947     {
1948         if( p_block )
1949             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1950
1951         DecoderProcessSout( p_dec, p_block );
1952     }
1953     else
1954 #endif
1955     {
1956         bool b_flush = false;
1957
1958         if( p_block )
1959         {
1960             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1961             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1962
1963             b_flush = !b_flushing && b_flush_request;
1964
1965             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1966         }
1967
1968         if( p_dec->fmt_in.i_cat == AUDIO_ES )
1969         {
1970             DecoderProcessAudio( p_dec, p_block, b_flush );
1971         }
1972         else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1973         {
1974             DecoderProcessVideo( p_dec, p_block, b_flush );
1975         }
1976         else if( p_dec->fmt_in.i_cat == SPU_ES )
1977         {
1978             DecoderProcessSpu( p_dec, p_block, b_flush );
1979         }
1980         else
1981         {
1982             msg_Err( p_dec, "unknown ES format" );
1983             p_dec->b_error = true;
1984         }
1985     }
1986
1987     /* */
1988     if( b_flush_request )
1989         DecoderProcessOnFlush( p_dec );
1990 }
1991
1992 static void DecoderError( decoder_t *p_dec, block_t *p_block )
1993 {
1994     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1995
1996     /* */
1997     if( p_block )
1998         block_Release( p_block );
1999
2000     if( b_flush_request )
2001         DecoderProcessOnFlush( p_dec );
2002 }
2003
2004
2005 /**
2006  * Destroys a decoder object
2007  *
2008  * \param p_dec the decoder object
2009  * \return nothing
2010  */
2011 static void DeleteDecoder( decoder_t * p_dec )
2012 {
2013     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2014
2015     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2016              (char*)&p_dec->fmt_in.i_codec,
2017              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2018
2019     /* Free all packets still in the decoder fifo. */
2020     block_FifoEmpty( p_owner->p_fifo );
2021     block_FifoRelease( p_owner->p_fifo );
2022
2023     /* */
2024     vlc_mutex_lock( &p_owner->lock );
2025     DecoderFlushBuffering( p_dec );
2026     vlc_mutex_unlock( &p_owner->lock );
2027
2028     /* Cleanup */
2029     if( p_owner->p_aout_input )
2030         aout_DecDelete( p_owner->p_aout, p_owner->p_aout_input );
2031     if( p_owner->p_aout )
2032     {
2033         vlc_object_release( p_owner->p_aout );
2034         p_owner->p_aout = NULL;
2035     }
2036     if( p_owner->p_vout )
2037     {
2038         /* Hack to make sure all the the pictures are freed by the decoder */
2039         vout_FixLeaks( p_owner->p_vout, true );
2040
2041         /* We are about to die. Reattach video output to p_vlc. */
2042         vout_Request( p_dec, p_owner->p_vout, NULL );
2043         input_SendEventVout( p_owner->p_input );
2044     }
2045
2046 #ifdef ENABLE_SOUT
2047     if( p_owner->p_sout_input )
2048     {
2049         sout_InputDelete( p_owner->p_sout_input );
2050         es_format_Clean( &p_owner->sout );
2051     }
2052 #endif
2053
2054     if( p_dec->fmt_in.i_cat == SPU_ES )
2055     {
2056         vout_thread_t *p_vout;
2057
2058         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2059         if( p_vout )
2060         {
2061             if( p_owner->p_spu_vout == p_vout )
2062                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR, p_owner->i_spu_channel );
2063             vlc_object_release( p_vout );
2064         }
2065     }
2066
2067     es_format_Clean( &p_dec->fmt_in );
2068     es_format_Clean( &p_dec->fmt_out );
2069     if( p_dec->p_description )
2070         vlc_meta_Delete( p_dec->p_description );
2071     es_format_Clean( &p_owner->fmt_description );
2072     if( p_owner->p_description )
2073         vlc_meta_Delete( p_owner->p_description );
2074
2075     if( p_owner->p_packetizer )
2076     {
2077         module_unneed( p_owner->p_packetizer,
2078                        p_owner->p_packetizer->p_module );
2079         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2080         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2081         if( p_owner->p_packetizer->p_description )
2082             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2083         vlc_object_detach( p_owner->p_packetizer );
2084         vlc_object_release( p_owner->p_packetizer );
2085     }
2086
2087     vlc_cond_destroy( &p_owner->wait );
2088     vlc_mutex_destroy( &p_owner->lock );
2089
2090     vlc_object_detach( p_dec );
2091
2092     free( p_owner );
2093 }
2094
2095 /*****************************************************************************
2096  * Buffers allocation callbacks for the decoders
2097  *****************************************************************************/
2098 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2099 {
2100     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2101
2102     vlc_assert_locked( &p_owner->lock );
2103
2104     p_owner->b_fmt_description = true;
2105
2106     /* Copy es_format */
2107     es_format_Clean( &p_owner->fmt_description );
2108     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2109
2110     /* Move p_description */
2111     if( p_owner->p_description && p_dec->p_description )
2112         vlc_meta_Delete( p_owner->p_description );
2113     p_owner->p_description = p_dec->p_description;
2114     p_dec->p_description = NULL;
2115 }
2116 static vout_thread_t *aout_request_vout( void *p_private,
2117                                          vout_thread_t *p_vout, video_format_t *p_fmt )
2118 {
2119     decoder_t *p_dec = p_private;
2120
2121     p_vout =  vout_Request( p_dec, p_vout, p_fmt );
2122     input_SendEventVout( p_dec->p_owner->p_input );
2123
2124     return p_vout;
2125 }
2126
2127 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2128 {
2129     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2130     aout_buffer_t *p_buffer;
2131
2132     if( p_owner->p_aout_input != NULL &&
2133         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
2134           p_dec->fmt_out.audio.i_original_channels !=
2135               p_owner->audio.i_original_channels ||
2136           p_dec->fmt_out.audio.i_bytes_per_frame !=
2137               p_owner->audio.i_bytes_per_frame ) )
2138     {
2139         aout_input_t *p_aout_input = p_owner->p_aout_input;
2140
2141         /* Parameters changed, restart the aout */
2142         vlc_mutex_lock( &p_owner->lock );
2143
2144         DecoderFlushBuffering( p_dec );
2145
2146         p_owner->p_aout_input = NULL;
2147         aout_DecDelete( p_owner->p_aout, p_aout_input );
2148
2149         vlc_mutex_unlock( &p_owner->lock );
2150     }
2151
2152     if( p_owner->p_aout_input == NULL )
2153     {
2154         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
2155         audio_sample_format_t format;
2156         aout_input_t *p_aout_input;
2157         aout_instance_t *p_aout;
2158         aout_request_vout_t request_vout;
2159
2160         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2161         p_owner->audio = p_dec->fmt_out.audio;
2162
2163         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2164         if( i_force_dolby &&
2165             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2166                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2167         {
2168             if( i_force_dolby == 1 )
2169             {
2170                 format.i_original_channels = format.i_original_channels |
2171                                              AOUT_CHAN_DOLBYSTEREO;
2172             }
2173             else /* i_force_dolby == 2 */
2174             {
2175                 format.i_original_channels = format.i_original_channels &
2176                                              ~AOUT_CHAN_DOLBYSTEREO;
2177             }
2178         }
2179
2180         request_vout.pf_request_vout = aout_request_vout;
2181         request_vout.p_private = p_dec;
2182
2183         p_aout = p_owner->p_aout;
2184         p_aout_input = aout_DecNew( p_dec, &p_aout,
2185                                     &format, &p_dec->fmt_out.audio_replay_gain, &request_vout );
2186
2187         vlc_mutex_lock( &p_owner->lock );
2188
2189         p_owner->p_aout = p_aout;
2190         p_owner->p_aout_input = p_aout_input;
2191         DecoderUpdateFormatLocked( p_dec );
2192
2193         vlc_mutex_unlock( &p_owner->lock );
2194
2195         if( p_owner->p_aout_input == NULL )
2196         {
2197             msg_Err( p_dec, "failed to create audio output" );
2198             p_dec->b_error = true;
2199             return NULL;
2200         }
2201         p_dec->fmt_out.audio.i_bytes_per_frame =
2202             p_owner->audio.i_bytes_per_frame;
2203     }
2204
2205     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
2206
2207     return p_buffer;
2208 }
2209
2210 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
2211 {
2212     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2213
2214     aout_DecDeleteBuffer( p_owner->p_aout,
2215                           p_owner->p_aout_input, p_buffer );
2216 }
2217
2218
2219 int vout_CountPictureAvailable( vout_thread_t *p_vout );
2220
2221 static picture_t *vout_new_buffer( decoder_t *p_dec )
2222 {
2223     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2224
2225     if( p_owner->p_vout == NULL ||
2226         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2227         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2228         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
2229         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
2230     {
2231         vout_thread_t *p_vout;
2232
2233         if( !p_dec->fmt_out.video.i_width ||
2234             !p_dec->fmt_out.video.i_height )
2235         {
2236             /* Can't create a new vout without display size */
2237             return NULL;
2238         }
2239
2240         if( !p_dec->fmt_out.video.i_visible_width ||
2241             !p_dec->fmt_out.video.i_visible_height )
2242         {
2243             if( p_dec->fmt_in.video.i_visible_width &&
2244                 p_dec->fmt_in.video.i_visible_height )
2245             {
2246                 p_dec->fmt_out.video.i_visible_width =
2247                     p_dec->fmt_in.video.i_visible_width;
2248                 p_dec->fmt_out.video.i_visible_height =
2249                     p_dec->fmt_in.video.i_visible_height;
2250             }
2251             else
2252             {
2253                 p_dec->fmt_out.video.i_visible_width =
2254                     p_dec->fmt_out.video.i_width;
2255                 p_dec->fmt_out.video.i_visible_height =
2256                     p_dec->fmt_out.video.i_height;
2257             }
2258         }
2259
2260         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
2261             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2262         {
2263             p_dec->fmt_out.video.i_visible_height = 1080;
2264             p_dec->fmt_out.video.i_sar_num *= 135;
2265             p_dec->fmt_out.video.i_sar_den *= 136;
2266             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2267         }
2268
2269         if( !p_dec->fmt_out.video.i_sar_num ||
2270             !p_dec->fmt_out.video.i_sar_den )
2271         {
2272             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
2273               p_dec->fmt_out.video.i_visible_height;
2274
2275             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
2276               p_dec->fmt_out.video.i_visible_width;
2277         }
2278
2279         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
2280                      &p_dec->fmt_out.video.i_sar_den,
2281                      p_dec->fmt_out.video.i_sar_num,
2282                      p_dec->fmt_out.video.i_sar_den, 50000 );
2283
2284         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
2285         p_owner->video = p_dec->fmt_out.video;
2286
2287         vlc_mutex_lock( &p_owner->lock );
2288
2289         DecoderFlushBuffering( p_dec );
2290
2291         p_vout = p_owner->p_vout;
2292         p_owner->p_vout = NULL;
2293         vlc_mutex_unlock( &p_owner->lock );
2294
2295         p_vout = vout_Request( p_dec, p_vout, &p_dec->fmt_out.video );
2296
2297         vlc_mutex_lock( &p_owner->lock );
2298         p_owner->p_vout = p_vout;
2299
2300         DecoderUpdateFormatLocked( p_dec );
2301
2302         vlc_mutex_unlock( &p_owner->lock );
2303
2304         input_SendEventVout( p_owner->p_input );
2305         if( p_vout == NULL )
2306         {
2307             msg_Err( p_dec, "failed to create video output" );
2308             p_dec->b_error = true;
2309             return NULL;
2310         }
2311
2312         if( p_owner->video.i_rmask )
2313             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
2314         if( p_owner->video.i_gmask )
2315             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
2316         if( p_owner->video.i_bmask )
2317             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
2318     }
2319
2320     /* Get a new picture
2321      */
2322     for( ;; )
2323     {
2324         picture_t *p_picture;
2325
2326         if( p_dec->b_die || p_dec->b_error )
2327             return NULL;
2328
2329         /* The video filter chain required that there is always 1 free buffer
2330          * that it will use as temporary one. It will release the temporary
2331          * buffer once its work is done, so this check is safe even if we don't
2332          * lock around both count() and create().
2333          */
2334         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
2335         {
2336             p_picture = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
2337             if( p_picture )
2338                 return p_picture;
2339         }
2340
2341         if( DecoderIsFlushing( p_dec ) )
2342             return NULL;
2343
2344         /* */
2345         DecoderSignalBuffering( p_dec, true );
2346
2347         /* Check the decoder doesn't leak pictures */
2348         vout_FixLeaks( p_owner->p_vout, false );
2349
2350         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2351         msleep( VOUT_OUTMEM_SLEEP );
2352     }
2353 }
2354
2355 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2356 {
2357     vout_DropPicture( p_dec->p_owner->p_vout, p_pic );
2358 }
2359
2360 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2361 {
2362     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
2363 }
2364
2365 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2366 {
2367     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
2368 }
2369
2370 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
2371 {
2372     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2373     vout_thread_t *p_vout = NULL;
2374     subpicture_t *p_subpic;
2375     int i_attempts = 30;
2376
2377     while( i_attempts-- )
2378     {
2379         if( p_dec->b_die || p_dec->b_error )
2380             break;
2381
2382         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2383         if( p_vout )
2384             break;
2385
2386         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2387     }
2388
2389     if( !p_vout )
2390     {
2391         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2392         return NULL;
2393     }
2394
2395     if( p_owner->p_spu_vout != p_vout )
2396     {
2397         vlc_mutex_lock( &p_owner->lock );
2398
2399         DecoderFlushBuffering( p_dec );
2400
2401         vlc_mutex_unlock( &p_owner->lock );
2402
2403         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
2404                      &p_owner->i_spu_channel );
2405         p_owner->i_spu_order = 0;
2406         p_owner->p_spu_vout = p_vout;
2407     }
2408
2409     p_subpic = subpicture_New();
2410     if( p_subpic )
2411     {
2412         p_subpic->i_channel = p_owner->i_spu_channel;
2413         p_subpic->i_order = p_owner->i_spu_order++;
2414         p_subpic->b_subtitle = true;
2415     }
2416
2417     vlc_object_release( p_vout );
2418
2419     return p_subpic;
2420 }
2421
2422 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2423 {
2424     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2425     vout_thread_t *p_vout = NULL;
2426
2427     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2428     if( !p_vout || p_owner->p_spu_vout != p_vout )
2429     {
2430         if( p_vout )
2431             vlc_object_release( p_vout );
2432         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2433         return;
2434     }
2435
2436     subpicture_Delete( p_subpic );
2437
2438     vlc_object_release( p_vout );
2439 }
2440