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

   1 /*****************************************************************************
   2  * decoder.c: Functions for the management of decoders
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *          Laurent Aimar <fenrir@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32 #include <assert.h>
  33
  34 #include <vlc_common.h>
  35
  36 #include <vlc_block.h>
  37 #include <vlc_vout.h>
  38 #include <vlc_aout.h>
  39 #include <vlc_sout.h>
  40 #include <vlc_codec.h>
  41 #include <vlc_osd.h>
  42 #include <vlc_meta.h>
  43
  44 #include <vlc_interface.h>
  45 #include "audio_output/aout_internal.h"
  46 #include "stream_output/stream_output.h"
  47 #include "input_internal.h"
  48 #include "clock.h"
  49 #include "decoder.h"
  50 #include "event.h"
  51 #include "ressource.h"
  52
  53 #include "../video_output/vout_control.h"
  54
  55 static decoder_t *CreateDecoder( input_thread_t *, es_format_t *, int, sout_instance_t *p_sout );
  56 static void       DeleteDecoder( decoder_t * );
  57
  58 static void      *DecoderThread( vlc_object_t * );
  59 static void       DecoderProcess( decoder_t *, block_t * );
  60 static void       DecoderError( decoder_t *p_dec, block_t *p_block );
  61 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  62 static void       DecoderFlush( decoder_t * );
  63 static void       DecoderSignalBuffering( decoder_t *, bool );
  64 static void       DecoderFlushBuffering( decoder_t * );
  65
  66 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  67
  68 /* Buffers allocation callbacks for the decoders */
  69 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  70 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  71
  72 static picture_t *vout_new_buffer( decoder_t * );
  73 static void vout_del_buffer( decoder_t *, picture_t * );
  74 static void vout_link_picture( decoder_t *, picture_t * );
  75 static void vout_unlink_picture( decoder_t *, picture_t * );
  76
  77 static subpicture_t *spu_new_buffer( decoder_t * );
  78 static void spu_del_buffer( decoder_t *, subpicture_t * );
  79
  80 static es_format_t null_es_format;
  81
  82 struct decoder_owner_sys_t
  83 {
  84     int64_t         i_preroll_end;
  85
  86     input_thread_t  *p_input;
  87     input_clock_t   *p_clock;
  88     int             i_last_rate;
  89
  90     vout_thread_t   *p_spu_vout;
  91     int              i_spu_channel;
  92     int64_t          i_spu_order;
  93
  94     sout_instance_t         *p_sout;
  95     sout_packetizer_input_t *p_sout_input;
  96
  97     /* Some decoders require already packetized data (ie. not truncated) */
  98     decoder_t *p_packetizer;
  99
 100     /* Current format in use by the output */
 101     video_format_t video;
 102     audio_format_t audio;
 103     es_format_t    sout;
 104
 105     /* */
 106     bool           b_fmt_description;
 107     es_format_t    fmt_description;
 108     vlc_meta_t     *p_description;
 109
 110     /* fifo */
 111     block_fifo_t *p_fifo;
 112
 113     /* Lock for communication with decoder thread */
 114     vlc_mutex_t lock;
 115     vlc_cond_t  wait;
 116
 117     /* -- These variables need locking on write(only) -- */
 118     aout_instance_t *p_aout;
 119     aout_input_t    *p_aout_input;
 120
 121     vout_thread_t   *p_vout;
 122
 123     /* -- Theses variables need locking on read *and* write -- */
 124     /* */
 125     /* Pause */
 126     bool b_paused;
 127     struct
 128     {
 129         mtime_t i_date;
 130         int     i_ignore;
 131     } pause;
 132
 133     /* Buffering */
 134     bool b_buffering;
 135     struct
 136     {
 137         bool b_first;
 138         bool b_full;
 139         int  i_count;
 140
 141         picture_t     *p_picture;
 142         picture_t     **pp_picture_next;
 143
 144         subpicture_t  *p_subpic;
 145         subpicture_t  **pp_subpic_next;
 146
 147         aout_buffer_t *p_audio;
 148         aout_buffer_t **pp_audio_next;
 149
 150         block_t       *p_block;
 151         block_t       **pp_block_next;
 152     } buffer;
 153
 154     /* Flushing */
 155     bool b_flushing;
 156
 157     /* CC */
 158     struct
 159     {
 160         bool b_supported;
 161         bool pb_present[4];
 162         decoder_t *pp_decoder[4];
 163     } cc;
 164
 165     /* Delay */
 166     mtime_t i_ts_delay;
 167 };
 168
 169 #define DECODER_MAX_BUFFERING_COUNT (4)
 170 #define DECODER_MAX_BUFFERING_AUDIO_DURATION (AOUT_MAX_PREPARE_TIME)
 171 #define DECODER_MAX_BUFFERING_VIDEO_DURATION (1*CLOCK_FREQ)
 172
 173 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 174  * a bogus PTS and won't be displayed */
 175 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 176
 177 /* */
 178 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 179
 180
 181 /*****************************************************************************
 182  * Public functions
 183  *****************************************************************************/
 184 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 185 {
 186     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 187     if( !p_picture )
 188         msg_Warn( p_decoder, "can't get output picture" );
 189     return p_picture;
 190 }
 191 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 192 {
 193     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 194 }
 195 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 196 {
 197     p_decoder->pf_picture_link( p_decoder, p_picture );
 198 }
 199 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 200 {
 201     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 202 }
 203
 204 aout_buffer_t *decoder_NewAudioBuffer( decoder_t *p_decoder, int i_size )
 205 {
 206     if( !p_decoder->pf_aout_buffer_new )
 207         return NULL;
 208     return p_decoder->pf_aout_buffer_new( p_decoder, i_size );
 209 }
 210 void decoder_DeleteAudioBuffer( decoder_t *p_decoder, aout_buffer_t *p_buffer )
 211 {
 212     p_decoder->pf_aout_buffer_del( p_decoder, p_buffer );
 213 }
 214
 215 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder )
 216 {
 217     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder );
 218     if( !p_subpicture )
 219         msg_Warn( p_decoder, "can't get output subpicture" );
 220     return p_subpicture;
 221 }
 222 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 223 {
 224     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 225 }
 226
 227 /* decoder_GetInputAttachments:
 228  */
 229 int decoder_GetInputAttachments( decoder_t *p_dec,
 230                                  input_attachment_t ***ppp_attachment,
 231                                  int *pi_attachment )
 232 {
 233     if( !p_dec->pf_get_attachments )
 234         return VLC_EGENERIC;
 235
 236     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 237 }
 238 /* decoder_GetDisplayDate:
 239  */
 240 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 241 {
 242     if( !p_dec->pf_get_display_date )
 243         return 0;
 244
 245     return p_dec->pf_get_display_date( p_dec, i_ts );
 246 }
 247 /* decoder_GetDisplayRate:
 248  */
 249 int decoder_GetDisplayRate( decoder_t *p_dec )
 250 {
 251     if( !p_dec->pf_get_display_rate )
 252         return INPUT_RATE_DEFAULT;
 253
 254     return p_dec->pf_get_display_rate( p_dec );
 255 }
 256
 257 /**
 258  * Spawns a new decoder thread
 259  *
 260  * \param p_input the input thread
 261  * \param p_es the es descriptor
 262  * \return the spawned decoder object
 263  */
 264 decoder_t *input_DecoderNew( input_thread_t *p_input,
 265                              es_format_t *fmt, input_clock_t *p_clock, sout_instance_t *p_sout  )
 266 {
 267     decoder_t *p_dec = NULL;
 268     int i_priority;
 269
 270 #ifdef ENABLE_SOUT
 271     /* If we are in sout mode, search for packetizer module */
 272     if( p_sout )
 273     {
 274         /* Create the decoder configuration structure */
 275         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
 276         if( p_dec == NULL )
 277         {
 278             msg_Err( p_input, "could not create packetizer" );
 279             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 280                             _("VLC could not open the packetizer module.") );
 281             return NULL;
 282         }
 283     }
 284     else
 285 #endif
 286     {
 287         /* Create the decoder configuration structure */
 288         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
 289         if( p_dec == NULL )
 290         {
 291             msg_Err( p_input, "could not create decoder" );
 292             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 293                             _("VLC could not open the decoder module.") );
 294             return NULL;
 295         }
 296     }
 297
 298     if( !p_dec->p_module )
 299     {
 300         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 301
 302         DeleteDecoder( p_dec );
 303         vlc_object_release( p_dec );
 304         return NULL;
 305     }
 306
 307     p_dec->p_owner->p_clock = p_clock;
 308
 309     if( fmt->i_cat == AUDIO_ES )
 310         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 311     else
 312         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 313
 314     /* Spawn the decoder thread */
 315     if( vlc_thread_create( p_dec, "decoder", DecoderThread, i_priority ) )
 316     {
 317         msg_Err( p_dec, "cannot spawn decoder thread" );
 318         module_unneed( p_dec, p_dec->p_module );
 319         DeleteDecoder( p_dec );
 320         vlc_object_release( p_dec );
 321         return NULL;
 322     }
 323
 324     return p_dec;
 325 }
 326
 327 /**
 328  * Kills a decoder thread and waits until it's finished
 329  *
 330  * \param p_input the input thread
 331  * \param p_es the es descriptor
 332  * \return nothing
 333  */
 334 void input_DecoderDelete( decoder_t *p_dec )
 335 {
 336     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 337
 338     vlc_object_kill( p_dec );
 339
 340     /* Make sure we aren't paused/buffering/waiting anymore */
 341     vlc_mutex_lock( &p_owner->lock );
 342     p_owner->b_paused = false;
 343     p_owner->b_buffering = false;
 344     p_owner->b_flushing = true;
 345     vlc_cond_signal( &p_owner->wait );
 346     vlc_mutex_unlock( &p_owner->lock );
 347
 348     vlc_thread_join( p_dec );
 349     module_unneed( p_dec, p_dec->p_module );
 350
 351     /* */
 352     if( p_dec->p_owner->cc.b_supported )
 353     {
 354         int i;
 355         for( i = 0; i < 4; i++ )
 356             input_DecoderSetCcState( p_dec, false, i );
 357     }
 358
 359     /* Delete decoder configuration */
 360     DeleteDecoder( p_dec );
 361
 362     /* Delete the decoder */
 363     vlc_object_release( p_dec );
 364 }
 365
 366 /**
 367  * Put a block_t in the decoder's fifo.
 368  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 369  *
 370  * \param p_dec the decoder object
 371  * \param p_block the data block
 372  */
 373 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block )
 374 {
 375     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 376
 377     if( p_owner->p_input->p->b_out_pace_control )
 378     {
 379         /* The fifo is not consummed when buffering and so will
 380          * deadlock vlc.
 381          * There is no need to lock as b_buffering is never modify
 382          * inside decoder thread. */
 383         if( !p_owner->b_buffering )
 384             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 385     }
 386     else if( block_FifoSize( p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 387     {
 388         /* FIXME: ideally we would check the time amount of data
 389          * in the FIFO instead of its size. */
 390         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 391                   "consumed quickly enough), resetting fifo!" );
 392         block_FifoEmpty( p_owner->p_fifo );
 393     }
 394
 395     block_FifoPut( p_owner->p_fifo, p_block );
 396 }
 397
 398 bool input_DecoderIsEmpty( decoder_t * p_dec )
 399 {
 400     assert( !p_dec->p_owner->b_buffering );
 401
 402     /* FIXME that's not really true */
 403     return block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 404 }
 405
 406 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 407 {
 408     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 409     int i;
 410
 411     vlc_mutex_lock( &p_owner->lock );
 412     for( i = 0; i < 4; i++ )
 413         pb_present[i] =  p_owner->cc.pb_present[i];
 414     vlc_mutex_unlock( &p_owner->lock );
 415 }
 416 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 417 {
 418     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 419
 420     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 421
 422     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 423         return VLC_EGENERIC;
 424
 425     if( b_decode )
 426     {
 427         static const vlc_fourcc_t fcc[4] = {
 428             VLC_FOURCC('c', 'c', '1', ' '),
 429             VLC_FOURCC('c', 'c', '2', ' '),
 430             VLC_FOURCC('c', 'c', '3', ' '),
 431             VLC_FOURCC('c', 'c', '4', ' '),
 432         };
 433         decoder_t *p_cc;
 434         es_format_t fmt;
 435
 436         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 437         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_owner->p_sout );
 438         if( !p_cc )
 439         {
 440             msg_Err( p_dec, "could not create decoder" );
 441             intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
 442                             _("VLC could not open the decoder module.") );
 443             return VLC_EGENERIC;
 444         }
 445         else if( !p_cc->p_module )
 446         {
 447             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 448             DeleteDecoder( p_cc );
 449             vlc_object_release( p_cc );
 450             return VLC_EGENERIC;
 451         }
 452         p_cc->p_owner->p_clock = p_owner->p_clock;
 453
 454         vlc_mutex_lock( &p_owner->lock );
 455         p_owner->cc.pp_decoder[i_channel] = p_cc;
 456         vlc_mutex_unlock( &p_owner->lock );
 457     }
 458     else
 459     {
 460         decoder_t *p_cc;
 461
 462         vlc_mutex_lock( &p_owner->lock );
 463         p_cc = p_owner->cc.pp_decoder[i_channel];
 464         p_owner->cc.pp_decoder[i_channel] = NULL;
 465         vlc_mutex_unlock( &p_owner->lock );
 466
 467         if( p_cc )
 468         {
 469             vlc_object_kill( p_cc );
 470             module_unneed( p_cc, p_cc->p_module );
 471             DeleteDecoder( p_cc );
 472             vlc_object_release( p_cc );
 473         }
 474     }
 475     return VLC_SUCCESS;
 476 }
 477 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 478 {
 479     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 480
 481     *pb_decode = false;
 482     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 483         return VLC_EGENERIC;
 484
 485     vlc_mutex_lock( &p_owner->lock );
 486     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 487     vlc_mutex_unlock( &p_owner->lock );
 488     return VLC_EGENERIC;
 489 }
 490
 491 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 492 {
 493     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 494
 495     vlc_mutex_lock( &p_owner->lock );
 496
 497     assert( !p_owner->b_paused || !b_paused );
 498
 499     p_owner->b_paused = b_paused;
 500     p_owner->pause.i_date = i_date;
 501     p_owner->pause.i_ignore = 0;
 502     vlc_cond_signal( &p_owner->wait );
 503
 504     DecoderOutputChangePause( p_dec, b_paused, i_date );
 505
 506     vlc_mutex_unlock( &p_owner->lock );
 507 }
 508
 509 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 510 {
 511     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 512
 513     vlc_mutex_lock( &p_owner->lock );
 514     p_owner->i_ts_delay = i_delay;
 515     vlc_mutex_unlock( &p_owner->lock );
 516 }
 517
 518 void input_DecoderStartBuffering( decoder_t *p_dec )
 519 {
 520     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 521
 522     vlc_mutex_lock( &p_owner->lock );
 523
 524     DecoderFlush( p_dec );
 525
 526     p_owner->buffer.b_first = true;
 527     p_owner->buffer.b_full = false;
 528     p_owner->buffer.i_count = 0;
 529
 530     assert( !p_owner->buffer.p_picture && !p_owner->buffer.p_subpic &&
 531             !p_owner->buffer.p_audio && !p_owner->buffer.p_block );
 532
 533     p_owner->buffer.p_picture = NULL;
 534     p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
 535
 536     p_owner->buffer.p_subpic = NULL;
 537     p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
 538
 539     p_owner->buffer.p_audio = NULL;
 540     p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
 541
 542     p_owner->buffer.p_block = NULL;
 543     p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
 544
 545
 546     p_owner->b_buffering = true;
 547
 548     vlc_cond_signal( &p_owner->wait );
 549
 550     vlc_mutex_unlock( &p_owner->lock );
 551 }
 552
 553 void input_DecoderStopBuffering( decoder_t *p_dec )
 554 {
 555     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 556
 557     vlc_mutex_lock( &p_owner->lock );
 558
 559     p_owner->b_buffering = false;
 560
 561     vlc_cond_signal( &p_owner->wait );
 562
 563     vlc_mutex_unlock( &p_owner->lock );
 564 }
 565
 566 void input_DecoderWaitBuffering( decoder_t *p_dec )
 567 {
 568     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 569
 570     vlc_mutex_lock( &p_owner->lock );
 571
 572     while( vlc_object_alive( p_dec ) && p_owner->b_buffering && !p_owner->buffer.b_full )
 573     {
 574         block_FifoWake( p_owner->p_fifo );
 575         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 576     }
 577
 578     vlc_mutex_unlock( &p_owner->lock );
 579 }
 580
 581 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 582 {
 583     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 584
 585     *pi_duration = 0;
 586
 587     vlc_mutex_lock( &p_owner->lock );
 588     if( p_dec->fmt_in.i_cat == VIDEO_ES )
 589     {
 590         if( p_owner->b_paused && p_owner->p_vout )
 591         {
 592             vout_NextPicture( p_owner->p_vout, pi_duration );
 593             p_owner->pause.i_ignore++;
 594             vlc_cond_signal( &p_owner->wait );
 595         }
 596     }
 597     else
 598     {
 599         /* TODO subtitle should not be flushed */
 600         DecoderFlush( p_dec );
 601     }
 602     vlc_mutex_unlock( &p_owner->lock );
 603 }
 604
 605 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
 606 {
 607     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 608     bool b_changed;
 609
 610     vlc_mutex_lock( &p_owner->lock );
 611     b_changed = p_owner->b_fmt_description;
 612     if( b_changed )
 613     {
 614         if( p_fmt )
 615             es_format_Copy( p_fmt, &p_owner->fmt_description );
 616
 617         if( pp_meta )
 618         {
 619             *pp_meta = NULL;
 620             if( p_owner->p_description )
 621             {
 622                 *pp_meta = vlc_meta_New();
 623                 if( *pp_meta )
 624                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
 625             }
 626         }
 627         p_owner->b_fmt_description = false;
 628     }
 629     vlc_mutex_unlock( &p_owner->lock );
 630     return b_changed;
 631 }
 632
 633 /*****************************************************************************
 634  * Internal functions
 635  *****************************************************************************/
 636 static int DecoderGetInputAttachments( decoder_t *p_dec,
 637                                        input_attachment_t ***ppp_attachment,
 638                                        int *pi_attachment )
 639 {
 640     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 641                           ppp_attachment, pi_attachment );
 642 }
 643 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 644 {
 645     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 646
 647     vlc_mutex_lock( &p_owner->lock );
 648     if( p_owner->b_buffering || p_owner->b_paused )
 649         i_ts = 0;
 650     vlc_mutex_unlock( &p_owner->lock );
 651
 652     if( !p_owner->p_clock || !i_ts )
 653         return i_ts;
 654
 655     return input_clock_GetTS( p_owner->p_clock, NULL, p_owner->p_input->p->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
 866         /* Make sure there is no cancellation point other than this one^^.
 867          * If you need one, be sure to push cleanup of p_block. */
 868         DecoderSignalBuffering( p_dec, p_block == NULL );
 869
 870         if( p_block )
 871         {
 872             int canc = vlc_savecancel();
 873
 874             if( p_dec->b_error )
 875                 DecoderError( p_dec, p_block );
 876             else
 877                 DecoderProcess( p_dec, p_block );
 878
 879             vlc_restorecancel( canc );
 880         }
 881     }
 882     return NULL;
 883 }
 884
 885 static void DecoderFlush( decoder_t *p_dec )
 886 {
 887     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 888     block_t *p_null;
 889
 890     vlc_assert_locked( &p_owner->lock );
 891
 892     /* Empty the fifo */
 893     block_FifoEmpty( p_owner->p_fifo );
 894
 895     /* Monitor for flush end */
 896     p_owner->b_flushing = true;
 897     vlc_cond_signal( &p_owner->wait );
 898
 899     /* Send a special block */
 900     p_null = block_New( p_dec, 128 );
 901     if( !p_null )
 902         return;
 903     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 904     p_null->i_flags |= BLOCK_FLAG_CORE_FLUSH;
 905     if( !p_dec->fmt_in.b_packetized )
 906         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 907     memset( p_null->p_buffer, 0, p_null->i_buffer );
 908
 909     input_DecoderDecode( p_dec, p_null );
 910
 911     /* */
 912     while( vlc_object_alive( p_dec ) && p_owner->b_flushing )
 913         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 914 }
 915
 916 static void DecoderSignalFlushed( decoder_t *p_dec )
 917 {
 918     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 919
 920     vlc_mutex_lock( &p_owner->lock );
 921
 922     if( p_owner->b_flushing )
 923     {
 924         p_owner->b_flushing = false;
 925         vlc_cond_signal( &p_owner->wait );
 926     }
 927
 928     vlc_mutex_unlock( &p_owner->lock );
 929 }
 930
 931 static void DecoderSignalBuffering( decoder_t *p_dec, bool b_full )
 932 {
 933     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 934
 935     vlc_mutex_lock( &p_owner->lock );
 936
 937     if( p_owner->b_buffering )
 938     {
 939         if( b_full )
 940             p_owner->buffer.b_full = true;
 941         vlc_cond_signal( &p_owner->wait );
 942     }
 943
 944     vlc_mutex_unlock( &p_owner->lock );
 945 }
 946
 947 static bool DecoderIsFlushing( decoder_t *p_dec )
 948 {
 949     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 950     bool b_flushing;
 951
 952     vlc_mutex_lock( &p_owner->lock );
 953
 954     b_flushing = p_owner->b_flushing;
 955
 956     vlc_mutex_unlock( &p_owner->lock );
 957
 958     return b_flushing;
 959 }
 960
 961 static void DecoderWaitUnblock( decoder_t *p_dec, bool *pb_reject )
 962 {
 963     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 964
 965     vlc_assert_locked( &p_owner->lock );
 966
 967     while( !p_owner->b_flushing )
 968     {
 969         if( p_owner->b_paused )
 970         {
 971             if( p_owner->b_buffering && !p_owner->buffer.b_full )
 972                 break;
 973             if( p_owner->pause.i_ignore > 0 )
 974             {
 975                 p_owner->pause.i_ignore--;
 976                 break;
 977             }
 978         }
 979         else
 980         {
 981             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
 982                 break;
 983         }
 984         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 985     }
 986
 987     if( pb_reject )
 988         *pb_reject = p_owner->b_flushing;
 989 }
 990
 991 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 992 {
 993     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 994
 995     vlc_assert_locked( &p_owner->lock );
 996
 997     /* XXX only audio and video output have to be paused.
 998      * - for sout it is useless
 999      * - for subs, it is done by the vout
1000      */
1001     if( p_dec->fmt_in.i_cat == AUDIO_ES )
1002     {
1003         if( p_owner->p_aout && p_owner->p_aout_input )
1004             aout_DecChangePause( p_owner->p_aout, p_owner->p_aout_input,
1005                                  b_paused, i_date );
1006     }
1007     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1008     {
1009         if( p_owner->p_vout )
1010             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1011     }
1012 }
1013 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1014 {
1015     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1016         *pi_preroll = INT64_MAX;
1017     else if( p->i_pts > 0 )
1018         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1019     else if( p->i_dts > 0 )
1020         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1021 }
1022
1023 static mtime_t DecoderTeletextFixTs( mtime_t i_ts, mtime_t i_ts_delay )
1024 {
1025     mtime_t current_date = mdate();
1026
1027     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
1028     if( !i_ts || i_ts > current_date + 10000000 || i_ts < current_date )
1029     {
1030         /* ETSI EN 300 472 Annex A : do not take into account the PTS
1031          * for teletext streams. */
1032         return current_date + 400000 + i_ts_delay;
1033     }
1034     return i_ts;
1035 }
1036
1037 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1038                           mtime_t *pi_duration, int *pi_rate, mtime_t *pi_delay, bool b_telx )
1039 {
1040     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1041     input_clock_t   *p_clock = p_owner->p_clock;
1042     int i_rate = 0;
1043
1044     vlc_assert_locked( &p_owner->lock );
1045
1046     const mtime_t i_ts_delay = p_owner->p_input->p->i_pts_delay;
1047     const mtime_t i_es_delay = p_owner->i_ts_delay;
1048
1049     if( p_clock )
1050     {
1051         const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1052
1053         if( *pi_ts0 > 0 )
1054             *pi_ts0 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1055                                          *pi_ts0 + i_es_delay );
1056         if( pi_ts1 && *pi_ts1 > 0 )
1057             *pi_ts1 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1058                                          *pi_ts1 + i_es_delay );
1059
1060         /* Do not create ephemere data because of rounding errors */
1061         if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1062             *pi_ts1 += 1;
1063
1064         if( i_rate <= 0 )
1065             i_rate = input_clock_GetRate( p_clock );
1066
1067         if( pi_duration )
1068             *pi_duration = ( *pi_duration * i_rate +
1069                                     INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
1070
1071         if( pi_rate )
1072             *pi_rate = i_rate;
1073
1074         if( b_telx )
1075         {
1076             *pi_ts0 = DecoderTeletextFixTs( *pi_ts0, i_ts_delay );
1077             if( pi_ts1 && *pi_ts1 <= 0 )
1078                 *pi_ts1 = *pi_ts0;
1079         }
1080     }
1081     if( pi_delay )
1082     {
1083         const int r = i_rate > 0 ? i_rate : INPUT_RATE_DEFAULT;
1084         *pi_delay = i_ts_delay + i_es_delay * r / INPUT_RATE_DEFAULT;
1085     }
1086 }
1087
1088 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1089                               int *pi_played_sum, int *pi_lost_sum )
1090 {
1091     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1092     aout_instance_t *p_aout = p_owner->p_aout;
1093     aout_input_t    *p_aout_input = p_owner->p_aout_input;
1094
1095     /* */
1096     if( p_audio->start_date <= 0 )
1097     {
1098         msg_Warn( p_dec, "non-dated audio buffer received" );
1099         *pi_lost_sum += 1;
1100         aout_BufferFree( p_audio );
1101         return;
1102     }
1103
1104     /* */
1105     vlc_mutex_lock( &p_owner->lock );
1106
1107     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1108     {
1109         p_audio->p_next = NULL;
1110
1111         *p_owner->buffer.pp_audio_next = p_audio;
1112         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1113
1114         p_owner->buffer.i_count++;
1115         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1116             p_audio->start_date - p_owner->buffer.p_audio->start_date > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1117         {
1118             p_owner->buffer.b_full = true;
1119             vlc_cond_signal( &p_owner->wait );
1120         }
1121     }
1122
1123     for( ;; )
1124     {
1125         bool b_has_more = false;
1126         bool b_reject;
1127         DecoderWaitUnblock( p_dec, &b_reject );
1128
1129         if( p_owner->b_buffering )
1130         {
1131             vlc_mutex_unlock( &p_owner->lock );
1132             return;
1133         }
1134
1135         /* */
1136         if( p_owner->buffer.p_audio )
1137         {
1138             p_audio = p_owner->buffer.p_audio;
1139
1140             p_owner->buffer.p_audio = p_audio->p_next;
1141             p_owner->buffer.i_count--;
1142
1143             b_has_more = p_owner->buffer.p_audio != NULL;
1144             if( !b_has_more )
1145                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1146         }
1147
1148         /* */
1149         int i_rate = INPUT_RATE_DEFAULT;
1150         mtime_t i_delay;
1151
1152         DecoderFixTs( p_dec, &p_audio->start_date, &p_audio->end_date, NULL,
1153                       &i_rate, &i_delay, false );
1154
1155         vlc_mutex_unlock( &p_owner->lock );
1156
1157         /* */
1158         const mtime_t i_max_date = mdate() + i_delay + AOUT_MAX_ADVANCE_TIME;
1159
1160         if( !p_aout || !p_aout_input ||
1161             p_audio->start_date <= 0 || p_audio->start_date > i_max_date ||
1162             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1163             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1164             b_reject = true;
1165
1166         /* Do not wait against unprotected date */
1167         const mtime_t i_deadline = p_audio->start_date - AOUT_MAX_PREPARE_TIME;
1168         while( !b_reject && i_deadline > mdate() )
1169         {
1170             vlc_mutex_lock( &p_owner->lock );
1171             if( p_owner->b_flushing || p_dec->b_die )
1172             {
1173                 b_reject = true;
1174                 vlc_mutex_unlock( &p_owner->lock );
1175                 break;
1176             }
1177             vlc_cond_timedwait( &p_owner->wait, &p_owner->lock, i_deadline );
1178             vlc_mutex_unlock( &p_owner->lock );
1179         }
1180
1181         if( !b_reject )
1182         {
1183             if( !aout_DecPlay( p_aout, p_aout_input, p_audio, i_rate ) )
1184                 *pi_played_sum += 1;
1185             *pi_lost_sum += aout_DecGetResetLost( p_aout, p_aout_input );
1186         }
1187         else
1188         {
1189             if( p_audio->start_date <= 0 )
1190             {
1191                 msg_Warn( p_dec, "non-dated audio buffer received" );
1192             }
1193             else if( p_audio->start_date > i_max_date )
1194             {
1195                 msg_Warn( p_aout, "received buffer in the future (%"PRId64")",
1196                           p_audio->start_date - mdate() );
1197             }
1198             *pi_lost_sum += 1;
1199             aout_BufferFree( p_audio );
1200         }
1201
1202         if( !b_has_more )
1203             break;
1204
1205         vlc_mutex_lock( &p_owner->lock );
1206         if( !p_owner->buffer.p_audio )
1207         {
1208             vlc_mutex_unlock( &p_owner->lock );
1209             break;
1210         }
1211     }
1212 }
1213
1214 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1215 {
1216     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1217     input_thread_t  *p_input = p_owner->p_input;
1218     aout_buffer_t   *p_aout_buf;
1219     int i_decoded = 0;
1220     int i_lost = 0;
1221     int i_played = 0;
1222
1223     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1224     {
1225         aout_instance_t *p_aout = p_owner->p_aout;
1226         aout_input_t    *p_aout_input = p_owner->p_aout_input;
1227
1228         if( p_dec->b_die )
1229         {
1230             /* It prevent freezing VLC in case of broken decoder */
1231             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1232             if( p_block )
1233                 block_Release( p_block );
1234             break;
1235         }
1236         i_decoded++;
1237
1238         if( p_aout_buf->start_date < p_owner->i_preroll_end )
1239         {
1240             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1241             continue;
1242         }
1243
1244         if( p_owner->i_preroll_end > 0 )
1245         {
1246             msg_Dbg( p_dec, "End of audio preroll" );
1247             if( p_owner->p_aout && p_owner->p_aout_input )
1248                 aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1249             /* */
1250             p_owner->i_preroll_end = -1;
1251         }
1252
1253         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1254     }
1255
1256     /* Update ugly stat */
1257     if( i_decoded > 0 || i_lost > 0 || i_played > 0 )
1258     {
1259         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1260
1261         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_abuffers,
1262                              i_lost, NULL );
1263         stats_UpdateInteger( p_dec, p_input->p->counters.p_played_abuffers,
1264                              i_played, NULL );
1265         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio,
1266                              i_decoded, NULL );
1267
1268         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1269     }
1270 }
1271 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1272 {
1273     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1274     block_t *p_cc;
1275     bool pb_present[4];
1276     int i;
1277     int i_cc_decoder;
1278
1279     assert( p_dec_cc->pf_get_cc != NULL );
1280
1281     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1282     if( !p_owner->cc.b_supported )
1283         return;
1284
1285     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1286     if( !p_cc )
1287         return;
1288
1289     vlc_mutex_lock( &p_owner->lock );
1290     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1291     {
1292         p_owner->cc.pb_present[i] |= pb_present[i];
1293         if( p_owner->cc.pp_decoder[i] )
1294             i_cc_decoder++;
1295     }
1296
1297     for( i = 0; i < 4; i++ )
1298     {
1299         if( !p_owner->cc.pp_decoder[i] )
1300             continue;
1301
1302         if( i_cc_decoder > 1 )
1303             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1304         else
1305             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1306         i_cc_decoder--;
1307     }
1308     vlc_mutex_unlock( &p_owner->lock );
1309 }
1310
1311 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1312                               int *pi_played_sum, int *pi_lost_sum )
1313 {
1314     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1315     vout_thread_t  *p_vout = p_owner->p_vout;
1316     bool b_first_buffered;
1317
1318     if( p_picture->date <= 0 )
1319     {
1320         msg_Warn( p_vout, "non-dated video buffer received" );
1321         *pi_lost_sum += 1;
1322         vout_DropPicture( p_vout, p_picture );
1323         return;
1324     }
1325
1326     /* */
1327     vlc_mutex_lock( &p_owner->lock );
1328
1329     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1330     {
1331         p_picture->p_next = NULL;
1332
1333         *p_owner->buffer.pp_picture_next = p_picture;
1334         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1335
1336         p_owner->buffer.i_count++;
1337         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1338             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1339         {
1340             p_owner->buffer.b_full = true;
1341             vlc_cond_signal( &p_owner->wait );
1342         }
1343     }
1344     b_first_buffered = p_owner->buffer.p_picture != NULL;
1345
1346     for( ;; b_first_buffered = false )
1347     {
1348         bool b_has_more = false;
1349
1350         bool b_reject;
1351
1352         DecoderWaitUnblock( p_dec, &b_reject );
1353
1354         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1355         {
1356             vlc_mutex_unlock( &p_owner->lock );
1357             return;
1358         }
1359         bool b_buffering_first = p_owner->b_buffering;
1360
1361         /* */
1362         if( p_owner->buffer.p_picture )
1363         {
1364             p_picture = p_owner->buffer.p_picture;
1365
1366             p_owner->buffer.p_picture = p_picture->p_next;
1367             p_owner->buffer.i_count--;
1368
1369             b_has_more = p_owner->buffer.p_picture != NULL;
1370             if( !b_has_more )
1371                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1372         }
1373
1374         /* */
1375         if( b_buffering_first )
1376         {
1377             assert( p_owner->buffer.b_first );
1378             assert( !p_owner->buffer.i_count );
1379             msg_Dbg( p_dec, "Received first picture" );
1380             p_owner->buffer.b_first = false;
1381             p_picture->b_force = true;
1382         }
1383
1384         int i_rate = INPUT_RATE_DEFAULT;
1385         mtime_t i_delay;
1386         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1387                       &i_rate, &i_delay, false );
1388
1389         vlc_mutex_unlock( &p_owner->lock );
1390
1391         /* */
1392         const mtime_t i_max_date = mdate() + i_delay + DECODER_BOGUS_VIDEO_DELAY;
1393
1394         if( !p_picture->b_force && ( p_picture->date <= 0 || p_picture->date >= i_max_date ) )
1395             b_reject = true;
1396
1397         if( !b_reject )
1398         {
1399             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1400             {
1401                 /* Be sure to not display old picture after our own */
1402                 vout_Flush( p_vout, p_picture->date );
1403                 p_owner->i_last_rate = i_rate;
1404             }
1405             vout_DisplayPicture( p_vout, p_picture );
1406         }
1407         else
1408         {
1409             if( p_picture->date <= 0 )
1410             {
1411                 msg_Warn( p_vout, "non-dated video buffer received" );
1412             }
1413             else
1414             {
1415                 msg_Warn( p_vout, "early picture skipped (%"PRId64")",
1416                           p_picture->date - mdate() );
1417             }
1418             *pi_lost_sum += 1;
1419             vout_DropPicture( p_vout, p_picture );
1420         }
1421         int i_tmp_display;
1422         int i_tmp_lost;
1423         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1424
1425         *pi_played_sum += i_tmp_display;
1426         *pi_lost_sum += i_tmp_lost;
1427
1428         if( !b_has_more || b_buffering_first )
1429             break;
1430
1431         vlc_mutex_lock( &p_owner->lock );
1432         if( !p_owner->buffer.p_picture )
1433         {
1434             vlc_mutex_unlock( &p_owner->lock );
1435             break;
1436         }
1437     }
1438 }
1439
1440 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1441 {
1442     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1443     input_thread_t *p_input = p_owner->p_input;
1444     picture_t      *p_pic;
1445     int i_lost = 0;
1446     int i_decoded = 0;
1447     int i_displayed = 0;
1448
1449     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1450     {
1451         vout_thread_t  *p_vout = p_owner->p_vout;
1452         if( p_dec->b_die )
1453         {
1454             /* It prevent freezing VLC in case of broken decoder */
1455             vout_DropPicture( p_vout, p_pic );
1456             if( p_block )
1457                 block_Release( p_block );
1458             break;
1459         }
1460
1461         i_decoded++;
1462
1463         if( p_pic->date < p_owner->i_preroll_end )
1464         {
1465             vout_DropPicture( p_vout, p_pic );
1466             continue;
1467         }
1468
1469         if( p_owner->i_preroll_end > 0 )
1470         {
1471             msg_Dbg( p_dec, "End of video preroll" );
1472             if( p_vout )
1473                 vout_Flush( p_vout, 1 );
1474             /* */
1475             p_owner->i_preroll_end = -1;
1476         }
1477
1478         if( p_dec->pf_get_cc &&
1479             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1480             DecoderGetCc( p_dec, p_dec );
1481
1482         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1483     }
1484     if( i_decoded > 0 || i_lost > 0 || i_displayed > 0 )
1485     {
1486         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1487
1488         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video,
1489                              i_decoded, NULL );
1490         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_pictures,
1491                              i_lost , NULL);
1492
1493         stats_UpdateInteger( p_dec, p_input->p->counters.p_displayed_pictures,
1494                              i_displayed, NULL);
1495
1496         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1497     }
1498 }
1499
1500 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic,
1501                             bool b_telx )
1502 {
1503     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1504     vout_thread_t *p_vout = p_owner->p_spu_vout;
1505
1506     /* */
1507     if( p_subpic->i_start <= 0 )
1508     {
1509         msg_Warn( p_dec, "non-dated spu buffer received" );
1510         subpicture_Delete( p_subpic );
1511         return;
1512     }
1513
1514     /* */
1515     vlc_mutex_lock( &p_owner->lock );
1516
1517     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1518     {
1519         p_subpic->p_next = NULL;
1520
1521         *p_owner->buffer.pp_subpic_next = p_subpic;
1522         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1523
1524         p_owner->buffer.i_count++;
1525         /* XXX it is important to be full after the first one */
1526         if( p_owner->buffer.i_count > 0 )
1527         {
1528             p_owner->buffer.b_full = true;
1529             vlc_cond_signal( &p_owner->wait );
1530         }
1531     }
1532
1533     for( ;; )
1534     {
1535         bool b_has_more = false;
1536         bool b_reject;
1537         DecoderWaitUnblock( p_dec, &b_reject );
1538
1539         if( p_owner->b_buffering )
1540         {
1541             vlc_mutex_unlock( &p_owner->lock );
1542             return;
1543         }
1544
1545         /* */
1546         if( p_owner->buffer.p_subpic )
1547         {
1548             p_subpic = p_owner->buffer.p_subpic;
1549
1550             p_owner->buffer.p_subpic = p_subpic->p_next;
1551             p_owner->buffer.i_count--;
1552
1553             b_has_more = p_owner->buffer.p_subpic != NULL;
1554             if( !b_has_more )
1555                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1556         }
1557
1558         /* */
1559         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1560                       NULL, NULL, b_telx );
1561
1562         vlc_mutex_unlock( &p_owner->lock );
1563
1564         if( !b_reject )
1565             spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
1566         else
1567             subpicture_Delete( p_subpic );
1568
1569         if( !b_has_more )
1570             break;
1571         vlc_mutex_lock( &p_owner->lock );
1572         if( !p_owner->buffer.p_subpic )
1573         {
1574             vlc_mutex_unlock( &p_owner->lock );
1575             break;
1576         }
1577     }
1578 }
1579
1580 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block,
1581                              bool b_telx )
1582 {
1583     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1584
1585     assert( p_owner->p_clock );
1586     assert( !p_sout_block->p_next );
1587
1588     vlc_mutex_lock( &p_owner->lock );
1589
1590     if( p_owner->b_buffering || p_owner->buffer.p_block )
1591     {
1592         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1593
1594         p_owner->buffer.i_count++;
1595         /* XXX it is important to be full after the first one */
1596         if( p_owner->buffer.i_count > 0 )
1597         {
1598             p_owner->buffer.b_full = true;
1599             vlc_cond_signal( &p_owner->wait );
1600         }
1601     }
1602
1603     for( ;; )
1604     {
1605         bool b_has_more = false;
1606         bool b_reject;
1607         DecoderWaitUnblock( p_dec, &b_reject );
1608
1609         if( p_owner->b_buffering )
1610         {
1611             vlc_mutex_unlock( &p_owner->lock );
1612             return;
1613         }
1614
1615         /* */
1616         if( p_owner->buffer.p_block )
1617         {
1618             p_sout_block = p_owner->buffer.p_block;
1619
1620             p_owner->buffer.p_block = p_sout_block->p_next;
1621             p_owner->buffer.i_count--;
1622
1623             b_has_more = p_owner->buffer.p_block != NULL;
1624             if( !b_has_more )
1625                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1626         }
1627         p_sout_block->p_next = NULL;
1628
1629         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1630                       &p_sout_block->i_length,
1631                       &p_sout_block->i_rate, NULL, b_telx );
1632
1633         vlc_mutex_unlock( &p_owner->lock );
1634
1635         if( !b_reject )
1636             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block );
1637         else
1638             block_Release( p_sout_block );
1639
1640         if( !b_has_more )
1641             break;
1642         vlc_mutex_lock( &p_owner->lock );
1643         if( !p_owner->buffer.p_block )
1644         {
1645             vlc_mutex_unlock( &p_owner->lock );
1646             break;
1647         }
1648     }
1649 }
1650
1651 /* */
1652 static void DecoderFlushBuffering( decoder_t *p_dec )
1653 {
1654     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1655
1656     vlc_assert_locked( &p_owner->lock );
1657
1658     while( p_owner->buffer.p_picture )
1659     {
1660         picture_t *p_picture = p_owner->buffer.p_picture;
1661
1662         p_owner->buffer.p_picture = p_picture->p_next;
1663         p_owner->buffer.i_count--;
1664
1665         if( p_owner->p_vout )
1666             vout_DropPicture( p_owner->p_vout, p_picture );
1667
1668         if( !p_owner->buffer.p_picture )
1669             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1670     }
1671     while( p_owner->buffer.p_audio )
1672     {
1673         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1674
1675         p_owner->buffer.p_audio = p_audio->p_next;
1676         p_owner->buffer.i_count--;
1677
1678         aout_BufferFree( p_audio );
1679
1680         if( !p_owner->buffer.p_audio )
1681             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1682     }
1683     while( p_owner->buffer.p_subpic )
1684     {
1685         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1686
1687         p_owner->buffer.p_subpic = p_subpic->p_next;
1688         p_owner->buffer.i_count--;
1689
1690         subpicture_Delete( p_subpic );
1691
1692         if( !p_owner->buffer.p_subpic )
1693             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1694     }
1695     if( p_owner->buffer.p_block )
1696     {
1697         block_ChainRelease( p_owner->buffer.p_block );
1698
1699         p_owner->buffer.i_count = 0;
1700         p_owner->buffer.p_block = NULL;
1701         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1702     }
1703 }
1704
1705 /* This function process a block for sout
1706  */
1707 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1708 {
1709     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1710     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1711     block_t *p_sout_block;
1712
1713     while( ( p_sout_block =
1714                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1715     {
1716         if( !p_owner->p_sout_input )
1717         {
1718             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1719
1720             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1721             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1722             if( p_dec->fmt_in.psz_language )
1723             {
1724                 if( p_owner->sout.psz_language )
1725                     free( p_owner->sout.psz_language );
1726                 p_owner->sout.psz_language =
1727                     strdup( p_dec->fmt_in.psz_language );
1728             }
1729
1730             p_owner->p_sout_input =
1731                 sout_InputNew( p_owner->p_sout,
1732                                &p_owner->sout );
1733
1734             if( p_owner->p_sout_input == NULL )
1735             {
1736                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1737                          (char *)&p_owner->sout.i_codec );
1738                 p_dec->b_error = true;
1739
1740                 while( p_sout_block )
1741                 {
1742                     block_t *p_next = p_sout_block->p_next;
1743                     block_Release( p_sout_block );
1744                     p_sout_block = p_next;
1745                 }
1746                 break;
1747             }
1748         }
1749
1750         while( p_sout_block )
1751         {
1752             block_t *p_next = p_sout_block->p_next;
1753
1754             p_sout_block->p_next = NULL;
1755
1756             DecoderPlaySout( p_dec, p_sout_block, b_telx );
1757
1758             p_sout_block = p_next;
1759         }
1760
1761         /* For now it's enough, as only sout impact on this flag */
1762         if( p_owner->p_sout->i_out_pace_nocontrol > 0 &&
1763             p_owner->p_input->p->b_out_pace_control )
1764         {
1765             msg_Dbg( p_dec, "switching to sync mode" );
1766             p_owner->p_input->p->b_out_pace_control = false;
1767         }
1768         else if( p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
1769                  !p_owner->p_input->p->b_out_pace_control )
1770         {
1771             msg_Dbg( p_dec, "switching to async mode" );
1772             p_owner->p_input->p->b_out_pace_control = true;
1773         }
1774     }
1775 }
1776
1777 /* This function process a video block
1778  */
1779 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1780 {
1781     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1782
1783     if( p_owner->p_packetizer )
1784     {
1785         block_t *p_packetized_block;
1786         decoder_t *p_packetizer = p_owner->p_packetizer;
1787
1788         while( (p_packetized_block =
1789                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1790         {
1791             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1792             {
1793                 es_format_Clean( &p_dec->fmt_in );
1794                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1795             }
1796             if( p_packetizer->pf_get_cc )
1797                 DecoderGetCc( p_dec, p_packetizer );
1798
1799             while( p_packetized_block )
1800             {
1801                 block_t *p_next = p_packetized_block->p_next;
1802                 p_packetized_block->p_next = NULL;
1803
1804                 DecoderDecodeVideo( p_dec, p_packetized_block );
1805
1806                 p_packetized_block = p_next;
1807             }
1808         }
1809     }
1810     else if( p_block )
1811     {
1812         DecoderDecodeVideo( p_dec, p_block );
1813     }
1814
1815     if( b_flush && p_owner->p_vout )
1816         vout_Flush( p_owner->p_vout, 1 );
1817 }
1818
1819 /* This function process a audio block
1820  */
1821 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1822 {
1823     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1824
1825     if( p_owner->p_packetizer )
1826     {
1827         block_t *p_packetized_block;
1828         decoder_t *p_packetizer = p_owner->p_packetizer;
1829
1830         while( (p_packetized_block =
1831                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1832         {
1833             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1834             {
1835                 es_format_Clean( &p_dec->fmt_in );
1836                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1837             }
1838
1839             while( p_packetized_block )
1840             {
1841                 block_t *p_next = p_packetized_block->p_next;
1842                 p_packetized_block->p_next = NULL;
1843
1844                 DecoderDecodeAudio( p_dec, p_packetized_block );
1845
1846                 p_packetized_block = p_next;
1847             }
1848         }
1849     }
1850     else if( p_block )
1851     {
1852         DecoderDecodeAudio( p_dec, p_block );
1853     }
1854
1855     if( b_flush && p_owner->p_aout && p_owner->p_aout_input )
1856         aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1857 }
1858
1859 /* This function process a subtitle block
1860  */
1861 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1862 {
1863     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1864     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1865
1866     input_thread_t *p_input = p_owner->p_input;
1867     vout_thread_t *p_vout;
1868     subpicture_t *p_spu;
1869
1870     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1871     {
1872         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1873         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1874         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1875
1876         p_vout = input_ressource_HoldVout( p_input->p->p_ressource );
1877         if( p_vout && p_owner->p_spu_vout == p_vout )
1878         {
1879             /* Preroll does not work very well with subtitle */
1880             if( p_spu->i_start > 0 &&
1881                 p_spu->i_start < p_owner->i_preroll_end &&
1882                 ( p_spu->i_stop <= 0 || p_spu->i_stop < p_owner->i_preroll_end ) )
1883             {
1884                 subpicture_Delete( p_spu );
1885             }
1886             else
1887             {
1888                 DecoderPlaySpu( p_dec, p_spu, b_telx );
1889             }
1890         }
1891         else
1892         {
1893             subpicture_Delete( p_spu );
1894         }
1895         if( p_vout )
1896             vlc_object_release( p_vout );
1897     }
1898
1899     if( b_flush && p_owner->p_spu_vout )
1900     {
1901         p_vout = input_ressource_HoldVout( p_input->p->p_ressource );
1902
1903         if( p_vout && p_owner->p_spu_vout == p_vout )
1904             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1905                          p_owner->i_spu_channel );
1906
1907         if( p_vout )
1908             vlc_object_release( p_vout );
1909     }
1910 }
1911
1912 /* */
1913 static void DecoderProcessOnFlush( decoder_t *p_dec )
1914 {
1915     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1916
1917     vlc_mutex_lock( &p_owner->lock );
1918     DecoderFlushBuffering( p_dec );
1919     vlc_mutex_unlock( &p_owner->lock );
1920
1921     DecoderSignalFlushed( p_dec );
1922 }
1923 /**
1924  * Decode a block
1925  *
1926  * \param p_dec the decoder object
1927  * \param p_block the block to decode
1928  * \return VLC_SUCCESS or an error code
1929  */
1930 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1931 {
1932     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1933     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1934
1935     if( p_block && p_block->i_buffer <= 0 )
1936     {
1937         assert( !b_flush_request );
1938         block_Release( p_block );
1939         return;
1940     }
1941
1942 #ifdef ENABLE_SOUT
1943     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
1944     {
1945         if( p_block )
1946             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1947
1948         DecoderProcessSout( p_dec, p_block );
1949     }
1950     else
1951 #endif
1952     {
1953         bool b_flush = false;
1954
1955         if( p_block )
1956         {
1957             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1958             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1959
1960             b_flush = !b_flushing && b_flush_request;
1961
1962             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1963         }
1964
1965         if( p_dec->fmt_in.i_cat == AUDIO_ES )
1966         {
1967             DecoderProcessAudio( p_dec, p_block, b_flush );
1968         }
1969         else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1970         {
1971             DecoderProcessVideo( p_dec, p_block, b_flush );
1972         }
1973         else if( p_dec->fmt_in.i_cat == SPU_ES )
1974         {
1975             DecoderProcessSpu( p_dec, p_block, b_flush );
1976         }
1977         else
1978         {
1979             msg_Err( p_dec, "unknown ES format" );
1980             p_dec->b_error = true;
1981         }
1982     }
1983
1984     /* */
1985     if( b_flush_request )
1986         DecoderProcessOnFlush( p_dec );
1987 }
1988
1989 static void DecoderError( decoder_t *p_dec, block_t *p_block )
1990 {
1991     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1992
1993     /* */
1994     if( p_block )
1995         block_Release( p_block );
1996
1997     if( b_flush_request )
1998         DecoderProcessOnFlush( p_dec );
1999 }
2000
2001
2002 /**
2003  * Destroys a decoder object
2004  *
2005  * \param p_dec the decoder object
2006  * \return nothing
2007  */
2008 static void DeleteDecoder( decoder_t * p_dec )
2009 {
2010     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2011
2012     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2013              (char*)&p_dec->fmt_in.i_codec,
2014              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2015
2016     /* Free all packets still in the decoder fifo. */
2017     block_FifoEmpty( p_owner->p_fifo );
2018     block_FifoRelease( p_owner->p_fifo );
2019
2020     /* */
2021     vlc_mutex_lock( &p_owner->lock );
2022     DecoderFlushBuffering( p_dec );
2023     vlc_mutex_unlock( &p_owner->lock );
2024
2025     /* Cleanup */
2026     if( p_owner->p_aout_input )
2027         aout_DecDelete( p_owner->p_aout, p_owner->p_aout_input );
2028     if( p_owner->p_aout )
2029     {
2030         input_ressource_RequestAout( p_owner->p_input->p->p_ressource,
2031                                      p_owner->p_aout );
2032         input_SendEventAout( p_owner->p_input );
2033         p_owner->p_aout = NULL;
2034     }
2035     if( p_owner->p_vout )
2036     {
2037         /* Hack to make sure all the the pictures are freed by the decoder */
2038         vout_FixLeaks( p_owner->p_vout, true );
2039
2040         /* */
2041         input_ressource_RequestVout( p_owner->p_input->p->p_ressource, p_owner->p_vout, NULL );
2042         input_SendEventVout( p_owner->p_input );
2043     }
2044
2045 #ifdef ENABLE_SOUT
2046     if( p_owner->p_sout_input )
2047     {
2048         sout_InputDelete( p_owner->p_sout_input );
2049         es_format_Clean( &p_owner->sout );
2050     }
2051 #endif
2052
2053     if( p_dec->fmt_in.i_cat == SPU_ES )
2054     {
2055         vout_thread_t *p_vout;
2056
2057         p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2058         if( p_vout )
2059         {
2060             if( p_owner->p_spu_vout == p_vout )
2061                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR, p_owner->i_spu_channel );
2062             vlc_object_release( p_vout );
2063         }
2064     }
2065
2066     es_format_Clean( &p_dec->fmt_in );
2067     es_format_Clean( &p_dec->fmt_out );
2068     if( p_dec->p_description )
2069         vlc_meta_Delete( p_dec->p_description );
2070     es_format_Clean( &p_owner->fmt_description );
2071     if( p_owner->p_description )
2072         vlc_meta_Delete( p_owner->p_description );
2073
2074     if( p_owner->p_packetizer )
2075     {
2076         module_unneed( p_owner->p_packetizer,
2077                        p_owner->p_packetizer->p_module );
2078         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2079         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2080         if( p_owner->p_packetizer->p_description )
2081             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2082         vlc_object_detach( p_owner->p_packetizer );
2083         vlc_object_release( p_owner->p_packetizer );
2084     }
2085
2086     vlc_cond_destroy( &p_owner->wait );
2087     vlc_mutex_destroy( &p_owner->lock );
2088
2089     vlc_object_detach( p_dec );
2090
2091     free( p_owner );
2092 }
2093
2094 /*****************************************************************************
2095  * Buffers allocation callbacks for the decoders
2096  *****************************************************************************/
2097 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2098 {
2099     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2100
2101     vlc_assert_locked( &p_owner->lock );
2102
2103     p_owner->b_fmt_description = true;
2104
2105     /* Copy es_format */
2106     es_format_Clean( &p_owner->fmt_description );
2107     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2108
2109     /* Move p_description */
2110     if( p_owner->p_description && p_dec->p_description )
2111         vlc_meta_Delete( p_owner->p_description );
2112     p_owner->p_description = p_dec->p_description;
2113     p_dec->p_description = NULL;
2114 }
2115 static vout_thread_t *aout_request_vout( void *p_private,
2116                                          vout_thread_t *p_vout, video_format_t *p_fmt )
2117 {
2118     decoder_t *p_dec = p_private;
2119
2120     p_vout = input_ressource_RequestVout( p_dec->p_owner->p_input->p->p_ressource, p_vout, p_fmt );
2121     input_SendEventVout( p_dec->p_owner->p_input );
2122
2123     return p_vout;
2124 }
2125
2126 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2127 {
2128     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2129     aout_buffer_t *p_buffer;
2130
2131     if( p_owner->p_aout_input != NULL &&
2132         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
2133           p_dec->fmt_out.audio.i_original_channels !=
2134               p_owner->audio.i_original_channels ||
2135           p_dec->fmt_out.audio.i_bytes_per_frame !=
2136               p_owner->audio.i_bytes_per_frame ) )
2137     {
2138         aout_input_t *p_aout_input = p_owner->p_aout_input;
2139
2140         /* Parameters changed, restart the aout */
2141         vlc_mutex_lock( &p_owner->lock );
2142
2143         DecoderFlushBuffering( p_dec );
2144
2145         p_owner->p_aout_input = NULL;
2146         aout_DecDelete( p_owner->p_aout, p_aout_input );
2147
2148         vlc_mutex_unlock( &p_owner->lock );
2149     }
2150
2151     if( p_owner->p_aout_input == NULL )
2152     {
2153         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
2154         audio_sample_format_t format;
2155         aout_input_t *p_aout_input;
2156         aout_instance_t *p_aout;
2157         aout_request_vout_t request_vout;
2158
2159         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2160         p_owner->audio = p_dec->fmt_out.audio;
2161
2162         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2163         if( i_force_dolby &&
2164             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2165                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2166         {
2167             if( i_force_dolby == 1 )
2168             {
2169                 format.i_original_channels = format.i_original_channels |
2170                                              AOUT_CHAN_DOLBYSTEREO;
2171             }
2172             else /* i_force_dolby == 2 */
2173             {
2174                 format.i_original_channels = format.i_original_channels &
2175                                              ~AOUT_CHAN_DOLBYSTEREO;
2176             }
2177         }
2178
2179         request_vout.pf_request_vout = aout_request_vout;
2180         request_vout.p_private = p_dec;
2181
2182         p_aout = p_owner->p_aout;
2183         if( !p_aout )
2184             p_aout = input_ressource_RequestAout( p_owner->p_input->p->p_ressource, NULL );
2185         p_aout_input = aout_DecNew( p_dec, &p_aout,
2186                                     &format, &p_dec->fmt_out.audio_replay_gain, &request_vout );
2187
2188         vlc_mutex_lock( &p_owner->lock );
2189
2190         p_owner->p_aout = p_aout;
2191         p_owner->p_aout_input = p_aout_input;
2192         DecoderUpdateFormatLocked( p_dec );
2193
2194         vlc_mutex_unlock( &p_owner->lock );
2195
2196         input_SendEventAout( p_owner->p_input );
2197
2198         if( p_owner->p_aout_input == NULL )
2199         {
2200             msg_Err( p_dec, "failed to create audio output" );
2201             p_dec->b_error = true;
2202             return NULL;
2203         }
2204         p_dec->fmt_out.audio.i_bytes_per_frame =
2205             p_owner->audio.i_bytes_per_frame;
2206     }
2207
2208     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
2209
2210     return p_buffer;
2211 }
2212
2213 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
2214 {
2215     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2216
2217     aout_DecDeleteBuffer( p_owner->p_aout,
2218                           p_owner->p_aout_input, p_buffer );
2219 }
2220
2221
2222 int vout_CountPictureAvailable( vout_thread_t *p_vout );
2223
2224 static picture_t *vout_new_buffer( decoder_t *p_dec )
2225 {
2226     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2227
2228     if( p_owner->p_vout == NULL ||
2229         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2230         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2231         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
2232         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
2233     {
2234         vout_thread_t *p_vout;
2235
2236         if( !p_dec->fmt_out.video.i_width ||
2237             !p_dec->fmt_out.video.i_height )
2238         {
2239             /* Can't create a new vout without display size */
2240             return NULL;
2241         }
2242
2243         if( !p_dec->fmt_out.video.i_visible_width ||
2244             !p_dec->fmt_out.video.i_visible_height )
2245         {
2246             if( p_dec->fmt_in.video.i_visible_width &&
2247                 p_dec->fmt_in.video.i_visible_height )
2248             {
2249                 p_dec->fmt_out.video.i_visible_width =
2250                     p_dec->fmt_in.video.i_visible_width;
2251                 p_dec->fmt_out.video.i_visible_height =
2252                     p_dec->fmt_in.video.i_visible_height;
2253             }
2254             else
2255             {
2256                 p_dec->fmt_out.video.i_visible_width =
2257                     p_dec->fmt_out.video.i_width;
2258                 p_dec->fmt_out.video.i_visible_height =
2259                     p_dec->fmt_out.video.i_height;
2260             }
2261         }
2262
2263         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
2264             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2265         {
2266             p_dec->fmt_out.video.i_visible_height = 1080;
2267             p_dec->fmt_out.video.i_sar_num *= 135;
2268             p_dec->fmt_out.video.i_sar_den *= 136;
2269             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2270         }
2271
2272         if( !p_dec->fmt_out.video.i_sar_num ||
2273             !p_dec->fmt_out.video.i_sar_den )
2274         {
2275             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
2276               p_dec->fmt_out.video.i_visible_height;
2277
2278             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
2279               p_dec->fmt_out.video.i_visible_width;
2280         }
2281
2282         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
2283                      &p_dec->fmt_out.video.i_sar_den,
2284                      p_dec->fmt_out.video.i_sar_num,
2285                      p_dec->fmt_out.video.i_sar_den, 50000 );
2286
2287         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
2288         p_owner->video = p_dec->fmt_out.video;
2289
2290         vlc_mutex_lock( &p_owner->lock );
2291
2292         DecoderFlushBuffering( p_dec );
2293
2294         p_vout = p_owner->p_vout;
2295         p_owner->p_vout = NULL;
2296         vlc_mutex_unlock( &p_owner->lock );
2297
2298         p_vout = input_ressource_RequestVout( p_owner->p_input->p->p_ressource,
2299                                               p_vout, &p_dec->fmt_out.video );
2300
2301         vlc_mutex_lock( &p_owner->lock );
2302         p_owner->p_vout = p_vout;
2303
2304         DecoderUpdateFormatLocked( p_dec );
2305
2306         vlc_mutex_unlock( &p_owner->lock );
2307
2308         input_SendEventVout( p_owner->p_input );
2309         if( p_vout == NULL )
2310         {
2311             msg_Err( p_dec, "failed to create video output" );
2312             p_dec->b_error = true;
2313             return NULL;
2314         }
2315
2316         if( p_owner->video.i_rmask )
2317             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
2318         if( p_owner->video.i_gmask )
2319             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
2320         if( p_owner->video.i_bmask )
2321             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
2322     }
2323
2324     /* Get a new picture
2325      */
2326     for( ;; )
2327     {
2328         picture_t *p_picture;
2329
2330         if( p_dec->b_die || p_dec->b_error )
2331             return NULL;
2332
2333         /* The video filter chain required that there is always 1 free buffer
2334          * that it will use as temporary one. It will release the temporary
2335          * buffer once its work is done, so this check is safe even if we don't
2336          * lock around both count() and create().
2337          */
2338         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
2339         {
2340             p_picture = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
2341             if( p_picture )
2342                 return p_picture;
2343         }
2344
2345         if( DecoderIsFlushing( p_dec ) )
2346             return NULL;
2347
2348         /* */
2349         DecoderSignalBuffering( p_dec, true );
2350
2351         /* Check the decoder doesn't leak pictures */
2352         vout_FixLeaks( p_owner->p_vout, false );
2353
2354         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2355         msleep( VOUT_OUTMEM_SLEEP );
2356     }
2357 }
2358
2359 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2360 {
2361     vout_DropPicture( p_dec->p_owner->p_vout, p_pic );
2362 }
2363
2364 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2365 {
2366     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
2367 }
2368
2369 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2370 {
2371     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
2372 }
2373
2374 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
2375 {
2376     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2377     vout_thread_t *p_vout = NULL;
2378     subpicture_t *p_subpic;
2379     int i_attempts = 30;
2380
2381     while( i_attempts-- )
2382     {
2383         if( p_dec->b_die || p_dec->b_error )
2384             break;
2385
2386         p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2387         if( p_vout )
2388             break;
2389
2390         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2391     }
2392
2393     if( !p_vout )
2394     {
2395         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2396         return NULL;
2397     }
2398
2399     if( p_owner->p_spu_vout != p_vout )
2400     {
2401         vlc_mutex_lock( &p_owner->lock );
2402
2403         DecoderFlushBuffering( p_dec );
2404
2405         vlc_mutex_unlock( &p_owner->lock );
2406
2407         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
2408                      &p_owner->i_spu_channel );
2409         p_owner->i_spu_order = 0;
2410         p_owner->p_spu_vout = p_vout;
2411     }
2412
2413     p_subpic = subpicture_New();
2414     if( p_subpic )
2415     {
2416         p_subpic->i_channel = p_owner->i_spu_channel;
2417         p_subpic->i_order = p_owner->i_spu_order++;
2418         p_subpic->b_subtitle = true;
2419     }
2420
2421     vlc_object_release( p_vout );
2422
2423     return p_subpic;
2424 }
2425
2426 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2427 {
2428     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2429     vout_thread_t *p_vout = NULL;
2430
2431     p_vout = input_ressource_HoldVout( p_owner->p_input->p->p_ressource );
2432     if( !p_vout || p_owner->p_spu_vout != p_vout )
2433     {
2434         if( p_vout )
2435             vlc_object_release( p_vout );
2436         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2437         return;
2438     }
2439
2440     subpicture_Delete( p_subpic );
2441
2442     vlc_object_release( p_vout );
2443 }
2444