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,
 316                            i_priority, false ) )
 317     {
 318         msg_Err( p_dec, "cannot spawn decoder thread" );
 319         module_unneed( p_dec, p_dec->p_module );
 320         DeleteDecoder( p_dec );
 321         vlc_object_release( p_dec );
 322         return NULL;
 323     }
 324
 325     return p_dec;
 326 }
 327
 328 /**
 329  * Kills a decoder thread and waits until it's finished
 330  *
 331  * \param p_input the input thread
 332  * \param p_es the es descriptor
 333  * \return nothing
 334  */
 335 void input_DecoderDelete( decoder_t *p_dec )
 336 {
 337     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 338
 339     vlc_object_kill( p_dec );
 340
 341     /* Make sure we aren't paused/buffering/waiting anymore */
 342     vlc_mutex_lock( &p_owner->lock );
 343     p_owner->b_paused = false;
 344     p_owner->b_buffering = false;
 345     p_owner->b_flushing = true;
 346     vlc_cond_signal( &p_owner->wait );
 347     vlc_mutex_unlock( &p_owner->lock );
 348
 349     vlc_thread_join( p_dec );
 350     module_unneed( p_dec, p_dec->p_module );
 351
 352     /* */
 353     if( p_dec->p_owner->cc.b_supported )
 354     {
 355         int i;
 356         for( i = 0; i < 4; i++ )
 357             input_DecoderSetCcState( p_dec, false, i );
 358     }
 359
 360     /* Delete decoder configuration */
 361     DeleteDecoder( p_dec );
 362
 363     /* Delete the decoder */
 364     vlc_object_release( p_dec );
 365 }
 366
 367 /**
 368  * Put a block_t in the decoder's fifo.
 369  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 370  *
 371  * \param p_dec the decoder object
 372  * \param p_block the data block
 373  */
 374 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block )
 375 {
 376     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 377
 378     if( p_owner->p_input->p->b_out_pace_control )
 379     {
 380         /* The fifo is not consummed when buffering and so will
 381          * deadlock vlc.
 382          * There is no need to lock as b_buffering is never modify
 383          * inside decoder thread. */
 384         if( !p_owner->b_buffering )
 385             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 386     }
 387     else if( block_FifoSize( p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 388     {
 389         /* FIXME: ideally we would check the time amount of data
 390          * in the FIFO instead of its size. */
 391         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 392                   "consumed quickly enough), resetting fifo!" );
 393         block_FifoEmpty( p_owner->p_fifo );
 394     }
 395
 396     block_FifoPut( p_owner->p_fifo, p_block );
 397 }
 398
 399 bool input_DecoderIsEmpty( decoder_t * p_dec )
 400 {
 401     assert( !p_dec->p_owner->b_buffering );
 402
 403     /* FIXME that's not really true */
 404     return block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 405 }
 406
 407 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 408 {
 409     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 410     int i;
 411
 412     vlc_mutex_lock( &p_owner->lock );
 413     for( i = 0; i < 4; i++ )
 414         pb_present[i] =  p_owner->cc.pb_present[i];
 415     vlc_mutex_unlock( &p_owner->lock );
 416 }
 417 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 418 {
 419     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 420
 421     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 422
 423     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 424         return VLC_EGENERIC;
 425
 426     if( b_decode )
 427     {
 428         static const vlc_fourcc_t fcc[4] = {
 429             VLC_FOURCC('c', 'c', '1', ' '),
 430             VLC_FOURCC('c', 'c', '2', ' '),
 431             VLC_FOURCC('c', 'c', '3', ' '),
 432             VLC_FOURCC('c', 'c', '4', ' '),
 433         };
 434         decoder_t *p_cc;
 435         es_format_t fmt;
 436
 437         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 438         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_owner->p_sout );
 439         if( !p_cc )
 440         {
 441             msg_Err( p_dec, "could not create decoder" );
 442             intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
 443                             _("VLC could not open the decoder module.") );
 444             return VLC_EGENERIC;
 445         }
 446         else if( !p_cc->p_module )
 447         {
 448             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 449             DeleteDecoder( p_cc );
 450             vlc_object_release( p_cc );
 451             return VLC_EGENERIC;
 452         }
 453         p_cc->p_owner->p_clock = p_owner->p_clock;
 454
 455         vlc_mutex_lock( &p_owner->lock );
 456         p_owner->cc.pp_decoder[i_channel] = p_cc;
 457         vlc_mutex_unlock( &p_owner->lock );
 458     }
 459     else
 460     {
 461         decoder_t *p_cc;
 462
 463         vlc_mutex_lock( &p_owner->lock );
 464         p_cc = p_owner->cc.pp_decoder[i_channel];
 465         p_owner->cc.pp_decoder[i_channel] = NULL;
 466         vlc_mutex_unlock( &p_owner->lock );
 467
 468         if( p_cc )
 469         {
 470             vlc_object_kill( p_cc );
 471             module_unneed( p_cc, p_cc->p_module );
 472             DeleteDecoder( p_cc );
 473             vlc_object_release( p_cc );
 474         }
 475     }
 476     return VLC_SUCCESS;
 477 }
 478 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 479 {
 480     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 481
 482     *pb_decode = false;
 483     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 484         return VLC_EGENERIC;
 485
 486     vlc_mutex_lock( &p_owner->lock );
 487     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 488     vlc_mutex_unlock( &p_owner->lock );
 489     return VLC_EGENERIC;
 490 }
 491
 492 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 493 {
 494     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 495
 496     vlc_mutex_lock( &p_owner->lock );
 497
 498     assert( !p_owner->b_paused || !b_paused );
 499
 500     p_owner->b_paused = b_paused;
 501     p_owner->pause.i_date = i_date;
 502     p_owner->pause.i_ignore = 0;
 503     vlc_cond_signal( &p_owner->wait );
 504
 505     DecoderOutputChangePause( p_dec, b_paused, i_date );
 506
 507     vlc_mutex_unlock( &p_owner->lock );
 508 }
 509
 510 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 511 {
 512     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 513
 514     vlc_mutex_lock( &p_owner->lock );
 515     p_owner->i_ts_delay = i_delay;
 516     vlc_mutex_unlock( &p_owner->lock );
 517 }
 518
 519 void input_DecoderStartBuffering( decoder_t *p_dec )
 520 {
 521     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 522
 523     vlc_mutex_lock( &p_owner->lock );
 524
 525     DecoderFlush( p_dec );
 526
 527     p_owner->buffer.b_first = true;
 528     p_owner->buffer.b_full = false;
 529     p_owner->buffer.i_count = 0;
 530
 531     assert( !p_owner->buffer.p_picture && !p_owner->buffer.p_subpic &&
 532             !p_owner->buffer.p_audio && !p_owner->buffer.p_block );
 533
 534     p_owner->buffer.p_picture = NULL;
 535     p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
 536
 537     p_owner->buffer.p_subpic = NULL;
 538     p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
 539
 540     p_owner->buffer.p_audio = NULL;
 541     p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
 542
 543     p_owner->buffer.p_block = NULL;
 544     p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
 545
 546
 547     p_owner->b_buffering = true;
 548
 549     vlc_cond_signal( &p_owner->wait );
 550
 551     vlc_mutex_unlock( &p_owner->lock );
 552 }
 553
 554 void input_DecoderStopBuffering( decoder_t *p_dec )
 555 {
 556     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 557
 558     vlc_mutex_lock( &p_owner->lock );
 559
 560     p_owner->b_buffering = false;
 561
 562     vlc_cond_signal( &p_owner->wait );
 563
 564     vlc_mutex_unlock( &p_owner->lock );
 565 }
 566
 567 void input_DecoderWaitBuffering( decoder_t *p_dec )
 568 {
 569     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 570
 571     vlc_mutex_lock( &p_owner->lock );
 572
 573     while( vlc_object_alive( p_dec ) && p_owner->b_buffering && !p_owner->buffer.b_full )
 574     {
 575         block_FifoWake( p_owner->p_fifo );
 576         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 577     }
 578
 579     vlc_mutex_unlock( &p_owner->lock );
 580 }
 581
 582 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 583 {
 584     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 585
 586     *pi_duration = 0;
 587
 588     vlc_mutex_lock( &p_owner->lock );
 589     if( p_dec->fmt_in.i_cat == VIDEO_ES )
 590     {
 591         if( p_owner->b_paused && p_owner->p_vout )
 592         {
 593             vout_NextPicture( p_owner->p_vout, pi_duration );
 594             p_owner->pause.i_ignore++;
 595             vlc_cond_signal( &p_owner->wait );
 596         }
 597     }
 598     else
 599     {
 600         /* TODO subtitle should not be flushed */
 601         DecoderFlush( p_dec );
 602     }
 603     vlc_mutex_unlock( &p_owner->lock );
 604 }
 605
 606 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
 607 {
 608     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 609     bool b_changed;
 610
 611     vlc_mutex_lock( &p_owner->lock );
 612     b_changed = p_owner->b_fmt_description;
 613     if( b_changed )
 614     {
 615         if( p_fmt )
 616             es_format_Copy( p_fmt, &p_owner->fmt_description );
 617
 618         if( pp_meta )
 619         {
 620             *pp_meta = NULL;
 621             if( p_owner->p_description )
 622             {
 623                 *pp_meta = vlc_meta_New();
 624                 if( *pp_meta )
 625                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
 626             }
 627         }
 628         p_owner->b_fmt_description = false;
 629     }
 630     vlc_mutex_unlock( &p_owner->lock );
 631     return b_changed;
 632 }
 633
 634 /*****************************************************************************
 635  * Internal functions
 636  *****************************************************************************/
 637 static int DecoderGetInputAttachments( decoder_t *p_dec,
 638                                        input_attachment_t ***ppp_attachment,
 639                                        int *pi_attachment )
 640 {
 641     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 642                           ppp_attachment, pi_attachment );
 643 }
 644 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 645 {
 646     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 647
 648     vlc_mutex_lock( &p_owner->lock );
 649     if( p_owner->b_buffering || p_owner->b_paused )
 650         i_ts = 0;
 651     vlc_mutex_unlock( &p_owner->lock );
 652
 653     if( !p_owner->p_clock || !i_ts )
 654         return i_ts;
 655
 656     return input_clock_GetTS( p_owner->p_clock, NULL, p_owner->p_input->i_pts_delay, i_ts );
 657 }
 658 static int DecoderGetDisplayRate( decoder_t *p_dec )
 659 {
 660     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 661
 662     if( !p_owner->p_clock )
 663         return INPUT_RATE_DEFAULT;
 664     return input_clock_GetRate( p_owner->p_clock );
 665 }
 666
 667 /* */
 668 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 669 {
 670     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 671              "VLC probably does not support this sound or video format.",
 672              (char*)&codec );
 673     intf_UserFatal( p_dec, false, _("No suitable decoder module"),
 674                     _("VLC does not support the audio or video format \"%4.4s\". "
 675                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 676 }
 677
 678
 679 /**
 680  * Create a decoder object
 681  *
 682  * \param p_input the input thread
 683  * \param p_es the es descriptor
 684  * \param i_object_type Object type as define in include/vlc_objects.h
 685  * \return the decoder object
 686  */
 687 static decoder_t * CreateDecoder( input_thread_t *p_input,
 688                                   es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
 689 {
 690     decoder_t *p_dec;
 691     decoder_owner_sys_t *p_owner;
 692     int i;
 693
 694     p_dec = vlc_object_create( p_input, i_object_type );
 695     if( p_dec == NULL )
 696         return NULL;
 697
 698     p_dec->pf_decode_audio = NULL;
 699     p_dec->pf_decode_video = NULL;
 700     p_dec->pf_decode_sub = NULL;
 701     p_dec->pf_get_cc = NULL;
 702     p_dec->pf_packetize = NULL;
 703
 704     /* Initialize the decoder */
 705     p_dec->p_module = NULL;
 706
 707     memset( &null_es_format, 0, sizeof(es_format_t) );
 708     es_format_Copy( &p_dec->fmt_in, fmt );
 709     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 710
 711     p_dec->p_description = NULL;
 712
 713     /* Allocate our private structure for the decoder */
 714     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 715     if( p_dec->p_owner == NULL )
 716     {
 717         vlc_object_release( p_dec );
 718         return NULL;
 719     }
 720     p_dec->p_owner->i_preroll_end = -1;
 721     p_dec->p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 722     p_dec->p_owner->p_input = p_input;
 723     p_dec->p_owner->p_aout = NULL;
 724     p_dec->p_owner->p_aout_input = NULL;
 725     p_dec->p_owner->p_vout = NULL;
 726     p_dec->p_owner->p_spu_vout = NULL;
 727     p_dec->p_owner->i_spu_channel = 0;
 728     p_dec->p_owner->i_spu_order = 0;
 729     p_dec->p_owner->p_sout = p_sout;
 730     p_dec->p_owner->p_sout_input = NULL;
 731     p_dec->p_owner->p_packetizer = NULL;
 732
 733     /* decoder fifo */
 734     if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
 735     {
 736         free( p_dec->p_owner );
 737         vlc_object_release( p_dec );
 738         return NULL;
 739     }
 740
 741     /* Set buffers allocation callbacks for the decoders */
 742     p_dec->pf_aout_buffer_new = aout_new_buffer;
 743     p_dec->pf_aout_buffer_del = aout_del_buffer;
 744     p_dec->pf_vout_buffer_new = vout_new_buffer;
 745     p_dec->pf_vout_buffer_del = vout_del_buffer;
 746     p_dec->pf_picture_link    = vout_link_picture;
 747     p_dec->pf_picture_unlink  = vout_unlink_picture;
 748     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 749     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 750     /* */
 751     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 752     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 753     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 754
 755     vlc_object_attach( p_dec, p_input );
 756
 757     /* Find a suitable decoder/packetizer module */
 758     if( i_object_type == VLC_OBJECT_DECODER )
 759         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
 760     else
 761         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
 762
 763     /* Check if decoder requires already packetized data */
 764     if( i_object_type == VLC_OBJECT_DECODER &&
 765         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 766     {
 767         p_dec->p_owner->p_packetizer =
 768             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 769         if( p_dec->p_owner->p_packetizer )
 770         {
 771             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 772                             &p_dec->fmt_in );
 773
 774             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 775                             &null_es_format );
 776
 777             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 778
 779             p_dec->p_owner->p_packetizer->p_module =
 780                 module_need( p_dec->p_owner->p_packetizer,
 781                              "packetizer", "$packetizer", false );
 782
 783             if( !p_dec->p_owner->p_packetizer->p_module )
 784             {
 785                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 786                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 787                 vlc_object_release( p_dec->p_owner->p_packetizer );
 788             }
 789         }
 790     }
 791
 792     /* Copy ourself the input replay gain */
 793     if( fmt->i_cat == AUDIO_ES )
 794     {
 795         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 796         {
 797             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 798             {
 799                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 800                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 801             }
 802             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 803             {
 804                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 805                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 806             }
 807         }
 808     }
 809
 810     /* */
 811     vlc_mutex_init( &p_owner->lock );
 812     vlc_cond_init( &p_owner->wait );
 813
 814     p_owner->b_fmt_description = false;
 815     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 816     p_owner->p_description = NULL;
 817
 818     p_owner->b_paused = false;
 819     p_owner->pause.i_date = 0;
 820     p_owner->pause.i_ignore = 0;
 821
 822     p_owner->b_buffering = false;
 823     p_owner->buffer.b_first = true;
 824     p_owner->buffer.b_full = false;
 825     p_owner->buffer.i_count = 0;
 826     p_owner->buffer.p_picture = NULL;
 827     p_owner->buffer.p_subpic = NULL;
 828     p_owner->buffer.p_audio = NULL;
 829     p_owner->buffer.p_block = NULL;
 830
 831     p_owner->b_flushing = false;
 832
 833     /* */
 834     p_owner->cc.b_supported = false;
 835     if( i_object_type == VLC_OBJECT_DECODER )
 836     {
 837         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 838             p_owner->cc.b_supported = true;
 839         if( p_dec->pf_get_cc )
 840             p_owner->cc.b_supported = true;
 841     }
 842
 843     for( i = 0; i < 4; i++ )
 844     {
 845         p_owner->cc.pb_present[i] = false;
 846         p_owner->cc.pp_decoder[i] = NULL;
 847     }
 848     p_owner->i_ts_delay = 0;
 849     return p_dec;
 850 }
 851
 852 /**
 853  * The decoding main loop
 854  *
 855  * \param p_dec the decoder
 856  */
 857 static void *DecoderThread( vlc_object_t *p_this )
 858 {
 859     decoder_t *p_dec = (decoder_t *)p_this;
 860     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 861
 862     /* The decoder's main loop */
 863     for( ;; )
 864     {
 865         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 866
 867         /* Make sure there is no cancellation point other than this one^^.
 868          * If you need one, be sure to push cleanup of p_block. */
 869         DecoderSignalBuffering( p_dec, p_block == NULL );
 870
 871         if( p_block )
 872         {
 873             int canc = vlc_savecancel();
 874
 875             if( p_dec->b_error )
 876                 DecoderError( p_dec, p_block );
 877             else
 878                 DecoderProcess( p_dec, p_block );
 879
 880             vlc_restorecancel( canc );
 881         }
 882         /* Ensure fast cancellation in case the fifo is not empty */
 883         vlc_testcancel();
 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, mtime_t i_ts_delay )
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 + i_ts_delay;
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 *pi_delay, 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     int i_rate = 0;
1046
1047     vlc_assert_locked( &p_owner->lock );
1048
1049     const mtime_t i_ts_delay = p_owner->p_input->i_pts_delay;
1050     const mtime_t i_es_delay = p_owner->i_ts_delay;
1051
1052     if( p_clock )
1053     {
1054         const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1055
1056         if( *pi_ts0 > 0 )
1057             *pi_ts0 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1058                                          *pi_ts0 + i_es_delay );
1059         if( pi_ts1 && *pi_ts1 > 0 )
1060             *pi_ts1 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1061                                          *pi_ts1 + i_es_delay );
1062
1063         /* Do not create ephemere data because of rounding errors */
1064         if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1065             *pi_ts1 += 1;
1066
1067         if( i_rate <= 0 )
1068             i_rate = input_clock_GetRate( p_clock );
1069
1070         if( pi_duration )
1071             *pi_duration = ( *pi_duration * i_rate +
1072                                     INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
1073
1074         if( pi_rate )
1075             *pi_rate = i_rate;
1076
1077         if( b_telx )
1078         {
1079             *pi_ts0 = DecoderTeletextFixTs( *pi_ts0, i_ts_delay );
1080             if( pi_ts1 && *pi_ts1 <= 0 )
1081                 *pi_ts1 = *pi_ts0;
1082         }
1083     }
1084     if( pi_delay )
1085     {
1086         const int r = i_rate > 0 ? i_rate : INPUT_RATE_DEFAULT;
1087         *pi_delay = i_ts_delay + i_es_delay * r / INPUT_RATE_DEFAULT;
1088     }
1089 }
1090
1091 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1092                               int *pi_played_sum, int *pi_lost_sum )
1093 {
1094     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1095     aout_instance_t *p_aout = p_owner->p_aout;
1096     aout_input_t    *p_aout_input = p_owner->p_aout_input;
1097
1098     /* */
1099     if( p_audio->start_date <= 0 )
1100     {
1101         msg_Warn( p_dec, "non-dated audio buffer received" );
1102         *pi_lost_sum += 1;
1103         aout_BufferFree( p_audio );
1104         return;
1105     }
1106
1107     /* */
1108     vlc_mutex_lock( &p_owner->lock );
1109
1110     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1111     {
1112         p_audio->p_next = NULL;
1113
1114         *p_owner->buffer.pp_audio_next = p_audio;
1115         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1116
1117         p_owner->buffer.i_count++;
1118         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1119             p_audio->start_date - p_owner->buffer.p_audio->start_date > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1120         {
1121             p_owner->buffer.b_full = true;
1122             vlc_cond_signal( &p_owner->wait );
1123         }
1124     }
1125
1126     for( ;; )
1127     {
1128         bool b_has_more = false;
1129         bool b_reject;
1130         DecoderWaitUnblock( p_dec, &b_reject );
1131
1132         if( p_owner->b_buffering )
1133         {
1134             vlc_mutex_unlock( &p_owner->lock );
1135             return;
1136         }
1137
1138         /* */
1139         if( p_owner->buffer.p_audio )
1140         {
1141             p_audio = p_owner->buffer.p_audio;
1142
1143             p_owner->buffer.p_audio = p_audio->p_next;
1144             p_owner->buffer.i_count--;
1145
1146             b_has_more = p_owner->buffer.p_audio != NULL;
1147             if( !b_has_more )
1148                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1149         }
1150
1151         /* */
1152         int i_rate = INPUT_RATE_DEFAULT;
1153         mtime_t i_delay;
1154
1155         DecoderFixTs( p_dec, &p_audio->start_date, &p_audio->end_date, NULL,
1156                       &i_rate, &i_delay, false );
1157
1158         vlc_mutex_unlock( &p_owner->lock );
1159
1160         /* */
1161         const mtime_t i_max_date = mdate() + i_delay + AOUT_MAX_ADVANCE_TIME;
1162
1163         if( !p_aout || !p_aout_input ||
1164             p_audio->start_date <= 0 || p_audio->start_date > i_max_date ||
1165             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1166             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1167             b_reject = true;
1168
1169         /* Do not wait against unprotected date */
1170         const mtime_t i_deadline = p_audio->start_date - AOUT_MAX_PREPARE_TIME;
1171         while( !b_reject && i_deadline > mdate() )
1172         {
1173             vlc_mutex_lock( &p_owner->lock );
1174             if( p_owner->b_flushing || p_dec->b_die )
1175             {
1176                 b_reject = true;
1177                 vlc_mutex_unlock( &p_owner->lock );
1178                 break;
1179             }
1180             vlc_cond_timedwait( &p_owner->wait, &p_owner->lock, i_deadline );
1181             vlc_mutex_unlock( &p_owner->lock );
1182         }
1183
1184         if( !b_reject )
1185         {
1186             if( !aout_DecPlay( p_aout, p_aout_input, p_audio, i_rate ) )
1187                 *pi_played_sum += 1;
1188             *pi_lost_sum += aout_DecGetResetLost( p_aout, p_aout_input );
1189         }
1190         else
1191         {
1192             if( p_audio->start_date <= 0 )
1193             {
1194                 msg_Warn( p_dec, "non-dated audio buffer received" );
1195             }
1196             else if( p_audio->start_date > i_max_date )
1197             {
1198                 msg_Warn( p_aout, "received buffer in the future (%"PRId64")",
1199                           p_audio->start_date - mdate() );
1200             }
1201             *pi_lost_sum += 1;
1202             aout_BufferFree( p_audio );
1203         }
1204
1205         if( !b_has_more )
1206             break;
1207
1208         vlc_mutex_lock( &p_owner->lock );
1209         if( !p_owner->buffer.p_audio )
1210         {
1211             vlc_mutex_unlock( &p_owner->lock );
1212             break;
1213         }
1214     }
1215 }
1216
1217 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1218 {
1219     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1220     input_thread_t  *p_input = p_owner->p_input;
1221     aout_buffer_t   *p_aout_buf;
1222     int i_decoded = 0;
1223     int i_lost = 0;
1224     int i_played = 0;
1225
1226     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1227     {
1228         aout_instance_t *p_aout = p_owner->p_aout;
1229         aout_input_t    *p_aout_input = p_owner->p_aout_input;
1230
1231         if( p_dec->b_die )
1232         {
1233             /* It prevent freezing VLC in case of broken decoder */
1234             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1235             if( p_block )
1236                 block_Release( p_block );
1237             break;
1238         }
1239         i_decoded++;
1240
1241         if( p_aout_buf->start_date < p_owner->i_preroll_end )
1242         {
1243             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1244             continue;
1245         }
1246
1247         if( p_owner->i_preroll_end > 0 )
1248         {
1249             msg_Dbg( p_dec, "End of audio preroll" );
1250             if( p_owner->p_aout && p_owner->p_aout_input )
1251                 aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1252             /* */
1253             p_owner->i_preroll_end = -1;
1254         }
1255
1256         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1257     }
1258
1259     /* Update ugly stat */
1260     if( i_decoded > 0 || i_lost > 0 || i_played > 0 )
1261     {
1262         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1263
1264         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_abuffers,
1265                              i_lost, NULL );
1266         stats_UpdateInteger( p_dec, p_input->p->counters.p_played_abuffers,
1267                              i_played, NULL );
1268         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio,
1269                              i_decoded, NULL );
1270
1271         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1272     }
1273 }
1274 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1275 {
1276     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1277     block_t *p_cc;
1278     bool pb_present[4];
1279     int i;
1280     int i_cc_decoder;
1281
1282     assert( p_dec_cc->pf_get_cc != NULL );
1283
1284     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1285     if( !p_owner->cc.b_supported )
1286         return;
1287
1288     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1289     if( !p_cc )
1290         return;
1291
1292     vlc_mutex_lock( &p_owner->lock );
1293     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1294     {
1295         p_owner->cc.pb_present[i] |= pb_present[i];
1296         if( p_owner->cc.pp_decoder[i] )
1297             i_cc_decoder++;
1298     }
1299
1300     for( i = 0; i < 4; i++ )
1301     {
1302         if( !p_owner->cc.pp_decoder[i] )
1303             continue;
1304
1305         if( i_cc_decoder > 1 )
1306             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1307         else
1308             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1309         i_cc_decoder--;
1310     }
1311     vlc_mutex_unlock( &p_owner->lock );
1312 }
1313
1314 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1315                               int *pi_played_sum, int *pi_lost_sum )
1316 {
1317     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1318     vout_thread_t  *p_vout = p_owner->p_vout;
1319     bool b_first_buffered;
1320
1321     if( p_picture->date <= 0 )
1322     {
1323         msg_Warn( p_vout, "non-dated video buffer received" );
1324         *pi_lost_sum += 1;
1325         vout_DropPicture( p_vout, p_picture );
1326         return;
1327     }
1328
1329     /* */
1330     vlc_mutex_lock( &p_owner->lock );
1331
1332     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1333     {
1334         p_picture->p_next = NULL;
1335
1336         *p_owner->buffer.pp_picture_next = p_picture;
1337         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1338
1339         p_owner->buffer.i_count++;
1340         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1341             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1342         {
1343             p_owner->buffer.b_full = true;
1344             vlc_cond_signal( &p_owner->wait );
1345         }
1346     }
1347     b_first_buffered = p_owner->buffer.p_picture != NULL;
1348
1349     for( ;; b_first_buffered = false )
1350     {
1351         bool b_has_more = false;
1352
1353         bool b_reject;
1354
1355         DecoderWaitUnblock( p_dec, &b_reject );
1356
1357         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1358         {
1359             vlc_mutex_unlock( &p_owner->lock );
1360             return;
1361         }
1362         bool b_buffering_first = p_owner->b_buffering;
1363
1364         /* */
1365         if( p_owner->buffer.p_picture )
1366         {
1367             p_picture = p_owner->buffer.p_picture;
1368
1369             p_owner->buffer.p_picture = p_picture->p_next;
1370             p_owner->buffer.i_count--;
1371
1372             b_has_more = p_owner->buffer.p_picture != NULL;
1373             if( !b_has_more )
1374                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1375         }
1376
1377         /* */
1378         if( b_buffering_first )
1379         {
1380             assert( p_owner->buffer.b_first );
1381             assert( !p_owner->buffer.i_count );
1382             msg_Dbg( p_dec, "Received first picture" );
1383             p_owner->buffer.b_first = false;
1384             p_picture->b_force = true;
1385         }
1386
1387         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 = input_ressource_HoldVout( p_input->p->p_ressource );
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 = input_ressource_HoldVout( p_input->p->p_ressource );
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         input_ressource_RequestAout( p_owner->p_input->p->p_ressource,
2034                                      p_owner->p_aout );
2035         input_SendEventAout( p_owner->p_input );
2036         p_owner->p_aout = NULL;
2037     }
2038     if( p_owner->p_vout )
2039     {
2040         /* Hack to make sure all the the pictures are freed by the decoder */
2041         vout_FixLeaks( p_owner->p_vout, true );
2042
2043         /* */
2044         input_ressource_RequestVout( p_owner->p_input->p->p_ressource, p_owner->p_vout, NULL );
2045         input_SendEventVout( p_owner->p_input );
2046     }
2047
2048 #ifdef ENABLE_SOUT
2049     if( p_owner->p_sout_input )
2050     {
2051         sout_InputDelete( p_owner->p_sout_input );
2052         es_format_Clean( &p_owner->sout );
2053     }
2054 #endif
2055
2056     if( p_dec->fmt_in.i_cat == SPU_ES )
2057     {
2058         vout_thread_t *p_vout;
2059
2060         p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2061         if( p_vout )
2062         {
2063             if( p_owner->p_spu_vout == p_vout )
2064                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR, p_owner->i_spu_channel );
2065             vlc_object_release( p_vout );
2066         }
2067     }
2068
2069     es_format_Clean( &p_dec->fmt_in );
2070     es_format_Clean( &p_dec->fmt_out );
2071     if( p_dec->p_description )
2072         vlc_meta_Delete( p_dec->p_description );
2073     es_format_Clean( &p_owner->fmt_description );
2074     if( p_owner->p_description )
2075         vlc_meta_Delete( p_owner->p_description );
2076
2077     if( p_owner->p_packetizer )
2078     {
2079         module_unneed( p_owner->p_packetizer,
2080                        p_owner->p_packetizer->p_module );
2081         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2082         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2083         if( p_owner->p_packetizer->p_description )
2084             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2085         vlc_object_detach( p_owner->p_packetizer );
2086         vlc_object_release( p_owner->p_packetizer );
2087     }
2088
2089     vlc_cond_destroy( &p_owner->wait );
2090     vlc_mutex_destroy( &p_owner->lock );
2091
2092     vlc_object_detach( p_dec );
2093
2094     free( p_owner );
2095 }
2096
2097 /*****************************************************************************
2098  * Buffers allocation callbacks for the decoders
2099  *****************************************************************************/
2100 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2101 {
2102     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2103
2104     vlc_assert_locked( &p_owner->lock );
2105
2106     p_owner->b_fmt_description = true;
2107
2108     /* Copy es_format */
2109     es_format_Clean( &p_owner->fmt_description );
2110     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2111
2112     /* Move p_description */
2113     if( p_owner->p_description && p_dec->p_description )
2114         vlc_meta_Delete( p_owner->p_description );
2115     p_owner->p_description = p_dec->p_description;
2116     p_dec->p_description = NULL;
2117 }
2118 static vout_thread_t *aout_request_vout( void *p_private,
2119                                          vout_thread_t *p_vout, video_format_t *p_fmt )
2120 {
2121     decoder_t *p_dec = p_private;
2122
2123     p_vout = input_ressource_RequestVout( p_dec->p_owner->p_input->p->p_ressource, p_vout, p_fmt );
2124     input_SendEventVout( p_dec->p_owner->p_input );
2125
2126     return p_vout;
2127 }
2128
2129 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2130 {
2131     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2132     aout_buffer_t *p_buffer;
2133
2134     if( p_owner->p_aout_input != NULL &&
2135         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
2136           p_dec->fmt_out.audio.i_original_channels !=
2137               p_owner->audio.i_original_channels ||
2138           p_dec->fmt_out.audio.i_bytes_per_frame !=
2139               p_owner->audio.i_bytes_per_frame ) )
2140     {
2141         aout_input_t *p_aout_input = p_owner->p_aout_input;
2142
2143         /* Parameters changed, restart the aout */
2144         vlc_mutex_lock( &p_owner->lock );
2145
2146         DecoderFlushBuffering( p_dec );
2147
2148         p_owner->p_aout_input = NULL;
2149         aout_DecDelete( p_owner->p_aout, p_aout_input );
2150
2151         vlc_mutex_unlock( &p_owner->lock );
2152     }
2153
2154     if( p_owner->p_aout_input == NULL )
2155     {
2156         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
2157         audio_sample_format_t format;
2158         aout_input_t *p_aout_input;
2159         aout_instance_t *p_aout;
2160         aout_request_vout_t request_vout;
2161
2162         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2163         p_owner->audio = p_dec->fmt_out.audio;
2164
2165         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2166         if( i_force_dolby &&
2167             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2168                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2169         {
2170             if( i_force_dolby == 1 )
2171             {
2172                 format.i_original_channels = format.i_original_channels |
2173                                              AOUT_CHAN_DOLBYSTEREO;
2174             }
2175             else /* i_force_dolby == 2 */
2176             {
2177                 format.i_original_channels = format.i_original_channels &
2178                                              ~AOUT_CHAN_DOLBYSTEREO;
2179             }
2180         }
2181
2182         request_vout.pf_request_vout = aout_request_vout;
2183         request_vout.p_private = p_dec;
2184
2185         p_aout = p_owner->p_aout;
2186         if( !p_aout )
2187             p_aout = input_ressource_RequestAout( p_owner->p_input->p->p_ressource, NULL );
2188         p_aout_input = aout_DecNew( p_dec, &p_aout,
2189                                     &format, &p_dec->fmt_out.audio_replay_gain, &request_vout );
2190
2191         vlc_mutex_lock( &p_owner->lock );
2192
2193         p_owner->p_aout = p_aout;
2194         p_owner->p_aout_input = p_aout_input;
2195         DecoderUpdateFormatLocked( p_dec );
2196
2197         vlc_mutex_unlock( &p_owner->lock );
2198
2199         input_SendEventAout( p_owner->p_input );
2200
2201         if( p_owner->p_aout_input == NULL )
2202         {
2203             msg_Err( p_dec, "failed to create audio output" );
2204             p_dec->b_error = true;
2205             return NULL;
2206         }
2207         p_dec->fmt_out.audio.i_bytes_per_frame =
2208             p_owner->audio.i_bytes_per_frame;
2209     }
2210
2211     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
2212
2213     return p_buffer;
2214 }
2215
2216 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
2217 {
2218     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2219
2220     aout_DecDeleteBuffer( p_owner->p_aout,
2221                           p_owner->p_aout_input, p_buffer );
2222 }
2223
2224
2225 int vout_CountPictureAvailable( vout_thread_t *p_vout );
2226
2227 static picture_t *vout_new_buffer( decoder_t *p_dec )
2228 {
2229     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2230
2231     if( p_owner->p_vout == NULL ||
2232         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2233         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2234         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
2235         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
2236     {
2237         vout_thread_t *p_vout;
2238
2239         if( !p_dec->fmt_out.video.i_width ||
2240             !p_dec->fmt_out.video.i_height )
2241         {
2242             /* Can't create a new vout without display size */
2243             return NULL;
2244         }
2245
2246         if( !p_dec->fmt_out.video.i_visible_width ||
2247             !p_dec->fmt_out.video.i_visible_height )
2248         {
2249             if( p_dec->fmt_in.video.i_visible_width &&
2250                 p_dec->fmt_in.video.i_visible_height )
2251             {
2252                 p_dec->fmt_out.video.i_visible_width =
2253                     p_dec->fmt_in.video.i_visible_width;
2254                 p_dec->fmt_out.video.i_visible_height =
2255                     p_dec->fmt_in.video.i_visible_height;
2256             }
2257             else
2258             {
2259                 p_dec->fmt_out.video.i_visible_width =
2260                     p_dec->fmt_out.video.i_width;
2261                 p_dec->fmt_out.video.i_visible_height =
2262                     p_dec->fmt_out.video.i_height;
2263             }
2264         }
2265
2266         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
2267             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2268         {
2269             p_dec->fmt_out.video.i_visible_height = 1080;
2270             p_dec->fmt_out.video.i_sar_num *= 135;
2271             p_dec->fmt_out.video.i_sar_den *= 136;
2272             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2273         }
2274
2275         if( !p_dec->fmt_out.video.i_sar_num ||
2276             !p_dec->fmt_out.video.i_sar_den )
2277         {
2278             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
2279               p_dec->fmt_out.video.i_visible_height;
2280
2281             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
2282               p_dec->fmt_out.video.i_visible_width;
2283         }
2284
2285         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
2286                      &p_dec->fmt_out.video.i_sar_den,
2287                      p_dec->fmt_out.video.i_sar_num,
2288                      p_dec->fmt_out.video.i_sar_den, 50000 );
2289
2290         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
2291         p_owner->video = p_dec->fmt_out.video;
2292
2293         vlc_mutex_lock( &p_owner->lock );
2294
2295         DecoderFlushBuffering( p_dec );
2296
2297         p_vout = p_owner->p_vout;
2298         p_owner->p_vout = NULL;
2299         vlc_mutex_unlock( &p_owner->lock );
2300
2301         p_vout = input_ressource_RequestVout( p_owner->p_input->p->p_ressource,
2302                                               p_vout, &p_dec->fmt_out.video );
2303
2304         vlc_mutex_lock( &p_owner->lock );
2305         p_owner->p_vout = p_vout;
2306
2307         DecoderUpdateFormatLocked( p_dec );
2308
2309         vlc_mutex_unlock( &p_owner->lock );
2310
2311         input_SendEventVout( p_owner->p_input );
2312         if( p_vout == NULL )
2313         {
2314             msg_Err( p_dec, "failed to create video output" );
2315             p_dec->b_error = true;
2316             return NULL;
2317         }
2318
2319         if( p_owner->video.i_rmask )
2320             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
2321         if( p_owner->video.i_gmask )
2322             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
2323         if( p_owner->video.i_bmask )
2324             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
2325     }
2326
2327     /* Get a new picture
2328      */
2329     for( ;; )
2330     {
2331         picture_t *p_picture;
2332
2333         if( p_dec->b_die || p_dec->b_error )
2334             return NULL;
2335
2336         /* The video filter chain required that there is always 1 free buffer
2337          * that it will use as temporary one. It will release the temporary
2338          * buffer once its work is done, so this check is safe even if we don't
2339          * lock around both count() and create().
2340          */
2341         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
2342         {
2343             p_picture = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
2344             if( p_picture )
2345                 return p_picture;
2346         }
2347
2348         if( DecoderIsFlushing( p_dec ) )
2349             return NULL;
2350
2351         /* */
2352         DecoderSignalBuffering( p_dec, true );
2353
2354         /* Check the decoder doesn't leak pictures */
2355         vout_FixLeaks( p_owner->p_vout, false );
2356
2357         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2358         msleep( VOUT_OUTMEM_SLEEP );
2359     }
2360 }
2361
2362 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2363 {
2364     vout_DropPicture( p_dec->p_owner->p_vout, p_pic );
2365 }
2366
2367 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2368 {
2369     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
2370 }
2371
2372 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2373 {
2374     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
2375 }
2376
2377 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
2378 {
2379     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2380     vout_thread_t *p_vout = NULL;
2381     subpicture_t *p_subpic;
2382     int i_attempts = 30;
2383
2384     while( i_attempts-- )
2385     {
2386         if( p_dec->b_die || p_dec->b_error )
2387             break;
2388
2389         p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2390         if( p_vout )
2391             break;
2392
2393         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2394     }
2395
2396     if( !p_vout )
2397     {
2398         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2399         return NULL;
2400     }
2401
2402     if( p_owner->p_spu_vout != p_vout )
2403     {
2404         vlc_mutex_lock( &p_owner->lock );
2405
2406         DecoderFlushBuffering( p_dec );
2407
2408         vlc_mutex_unlock( &p_owner->lock );
2409
2410         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
2411                      &p_owner->i_spu_channel );
2412         p_owner->i_spu_order = 0;
2413         p_owner->p_spu_vout = p_vout;
2414     }
2415
2416     p_subpic = subpicture_New();
2417     if( p_subpic )
2418     {
2419         p_subpic->i_channel = p_owner->i_spu_channel;
2420         p_subpic->i_order = p_owner->i_spu_order++;
2421         p_subpic->b_subtitle = true;
2422     }
2423
2424     vlc_object_release( p_vout );
2425
2426     return p_subpic;
2427 }
2428
2429 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2430 {
2431     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2432     vout_thread_t *p_vout = NULL;
2433
2434     p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2435     if( !p_vout || p_owner->p_spu_vout != p_vout )
2436     {
2437         if( p_vout )
2438             vlc_object_release( p_vout );
2439         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2440         return;
2441     }
2442
2443     subpicture_Delete( p_subpic );
2444
2445     vlc_object_release( p_vout );
2446 }
2447