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 VLC authors and VideoLAN
   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 it
  12  * under the terms of the GNU Lesser General Public License as published by
  13  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public License
  22  * along with this program; if not, write to the Free Software Foundation,
  23  * 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_spu.h>
  42 #include <vlc_meta.h>
  43 #include <vlc_dialog.h>
  44 #include <vlc_modules.h>
  45
  46 #include "audio_output/aout_internal.h"
  47 #include "stream_output/stream_output.h"
  48 #include "input_internal.h"
  49 #include "clock.h"
  50 #include "decoder.h"
  51 #include "event.h"
  52 #include "resource.h"
  53
  54 #include "../video_output/vout_control.h"
  55
  56 static decoder_t *CreateDecoder( vlc_object_t *, input_thread_t *,
  57                                  es_format_t *, bool, input_resource_t *,
  58                                  sout_instance_t *p_sout );
  59 static void       DeleteDecoder( decoder_t * );
  60
  61 static void      *DecoderThread( void * );
  62 static void       DecoderProcess( decoder_t *, block_t * );
  63 static void       DecoderError( decoder_t *p_dec, block_t *p_block );
  64 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  65 static void       DecoderFlush( decoder_t * );
  66 static void       DecoderSignalBuffering( decoder_t *, bool );
  67 static void       DecoderFlushBuffering( decoder_t * );
  68
  69 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  70
  71 /* Buffers allocation callbacks for the decoders */
  72 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  73
  74 static picture_t *vout_new_buffer( decoder_t * );
  75 static void vout_del_buffer( decoder_t *, picture_t * );
  76 static void vout_link_picture( decoder_t *, picture_t * );
  77 static void vout_unlink_picture( decoder_t *, picture_t * );
  78
  79 static subpicture_t *spu_new_buffer( decoder_t *, const subpicture_updater_t * );
  80 static void spu_del_buffer( decoder_t *, subpicture_t * );
  81
  82 struct decoder_owner_sys_t
  83 {
  84     int64_t         i_preroll_end;
  85
  86     input_thread_t  *p_input;
  87     input_resource_t*p_resource;
  88     input_clock_t   *p_clock;
  89     int             i_last_rate;
  90
  91     vout_thread_t   *p_spu_vout;
  92     int              i_spu_channel;
  93     int64_t          i_spu_order;
  94
  95     sout_instance_t         *p_sout;
  96     sout_packetizer_input_t *p_sout_input;
  97
  98     vlc_thread_t     thread;
  99
 100     /* Some decoders require already packetized data (ie. not truncated) */
 101     decoder_t *p_packetizer;
 102     bool b_packetizer;
 103
 104     /* Current format in use by the output */
 105     video_format_t video;
 106     audio_format_t audio;
 107     es_format_t    sout;
 108
 109     /* */
 110     bool           b_fmt_description;
 111     es_format_t    fmt_description;
 112     vlc_meta_t     *p_description;
 113
 114     /* fifo */
 115     block_fifo_t *p_fifo;
 116
 117     /* Lock for communication with decoder thread */
 118     vlc_mutex_t lock;
 119     vlc_cond_t  wait_request;
 120     vlc_cond_t  wait_acknowledge;
 121
 122     /* -- These variables need locking on write(only) -- */
 123     audio_output_t *p_aout;
 124
 125     vout_thread_t   *p_vout;
 126
 127     /* -- Theses variables need locking on read *and* write -- */
 128     bool b_exit;
 129
 130     /* Pause */
 131     bool b_paused;
 132     struct
 133     {
 134         mtime_t i_date;
 135         int     i_ignore;
 136     } pause;
 137
 138     /* Buffering */
 139     bool b_buffering;
 140     struct
 141     {
 142         bool b_first;
 143         bool b_full;
 144         int  i_count;
 145
 146         picture_t     *p_picture;
 147         picture_t     **pp_picture_next;
 148
 149         subpicture_t  *p_subpic;
 150         subpicture_t  **pp_subpic_next;
 151
 152         aout_buffer_t *p_audio;
 153         aout_buffer_t **pp_audio_next;
 154
 155         block_t       *p_block;
 156         block_t       **pp_block_next;
 157     } buffer;
 158
 159     /* Flushing */
 160     bool b_flushing;
 161
 162     /* CC */
 163     struct
 164     {
 165         bool b_supported;
 166         bool pb_present[4];
 167         decoder_t *pp_decoder[4];
 168     } cc;
 169
 170     /* Delay */
 171     mtime_t i_ts_delay;
 172 };
 173
 174 #define DECODER_MAX_BUFFERING_COUNT (4)
 175 #define DECODER_MAX_BUFFERING_AUDIO_DURATION (AOUT_MAX_PREPARE_TIME)
 176 #define DECODER_MAX_BUFFERING_VIDEO_DURATION (1*CLOCK_FREQ)
 177
 178 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 179  * a bogus PTS and won't be displayed */
 180 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 181
 182 /* */
 183 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 184
 185
 186 /*****************************************************************************
 187  * Public functions
 188  *****************************************************************************/
 189 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 190 {
 191     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 192     if( !p_picture )
 193         msg_Warn( p_decoder, "can't get output picture" );
 194     return p_picture;
 195 }
 196 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 197 {
 198     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 199 }
 200 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 201 {
 202     p_decoder->pf_picture_link( p_decoder, p_picture );
 203 }
 204 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 205 {
 206     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 207 }
 208
 209 aout_buffer_t *decoder_NewAudioBuffer( decoder_t *p_decoder, int i_size )
 210 {
 211     if( !p_decoder->pf_aout_buffer_new )
 212         return NULL;
 213     return p_decoder->pf_aout_buffer_new( p_decoder, i_size );
 214 }
 215
 216 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder,
 217                                      const subpicture_updater_t *p_dyn )
 218 {
 219     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder, p_dyn );
 220     if( !p_subpicture )
 221         msg_Warn( p_decoder, "can't get output subpicture" );
 222     return p_subpicture;
 223 }
 224
 225 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 226 {
 227     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 228 }
 229
 230 /* decoder_GetInputAttachments:
 231  */
 232 int decoder_GetInputAttachments( decoder_t *p_dec,
 233                                  input_attachment_t ***ppp_attachment,
 234                                  int *pi_attachment )
 235 {
 236     if( !p_dec->pf_get_attachments )
 237         return VLC_EGENERIC;
 238
 239     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 240 }
 241 /* decoder_GetDisplayDate:
 242  */
 243 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 244 {
 245     if( !p_dec->pf_get_display_date )
 246         return VLC_TS_INVALID;
 247
 248     return p_dec->pf_get_display_date( p_dec, i_ts );
 249 }
 250 /* decoder_GetDisplayRate:
 251  */
 252 int decoder_GetDisplayRate( decoder_t *p_dec )
 253 {
 254     if( !p_dec->pf_get_display_rate )
 255         return INPUT_RATE_DEFAULT;
 256
 257     return p_dec->pf_get_display_rate( p_dec );
 258 }
 259
 260 /* TODO: pass p_sout through p_resource? -- Courmisch */
 261 static decoder_t *decoder_New( vlc_object_t *p_parent, input_thread_t *p_input,
 262                                es_format_t *fmt, input_clock_t *p_clock,
 263                                input_resource_t *p_resource,
 264                                sout_instance_t *p_sout  )
 265 {
 266     decoder_t *p_dec = NULL;
 267     const char *psz_type = p_sout ? N_("packetizer") : N_("decoder");
 268     int i_priority;
 269
 270     /* Create the decoder configuration structure */
 271     p_dec = CreateDecoder( p_parent, p_input, fmt,
 272                            p_sout != NULL, p_resource, p_sout );
 273     if( p_dec == NULL )
 274     {
 275         msg_Err( p_parent, "could not create %s", psz_type );
 276         dialog_Fatal( p_parent, _("Streaming / Transcoding failed"),
 277                       _("VLC could not open the %s module."),
 278                       vlc_gettext( psz_type ) );
 279         return NULL;
 280     }
 281
 282     if( !p_dec->p_module )
 283     {
 284         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 285
 286         DeleteDecoder( p_dec );
 287         return NULL;
 288     }
 289
 290     p_dec->p_owner->p_clock = p_clock;
 291     assert( p_dec->fmt_out.i_cat != UNKNOWN_ES );
 292
 293     if( p_dec->fmt_out.i_cat == AUDIO_ES )
 294         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 295     else
 296         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 297
 298     /* Spawn the decoder thread */
 299     if( vlc_clone( &p_dec->p_owner->thread, DecoderThread, p_dec, i_priority ) )
 300     {
 301         msg_Err( p_dec, "cannot spawn decoder thread" );
 302         module_unneed( p_dec, p_dec->p_module );
 303         DeleteDecoder( p_dec );
 304         return NULL;
 305     }
 306
 307     return p_dec;
 308 }
 309
 310
 311 /**
 312  * Spawns a new decoder thread from the input thread
 313  *
 314  * \param p_input the input thread
 315  * \param p_es the es descriptor
 316  * \return the spawned decoder object
 317  */
 318 decoder_t *input_DecoderNew( input_thread_t *p_input,
 319                              es_format_t *fmt, input_clock_t *p_clock,
 320                              sout_instance_t *p_sout  )
 321 {
 322     return decoder_New( VLC_OBJECT(p_input), p_input, fmt, p_clock,
 323                         p_input->p->p_resource, p_sout );
 324 }
 325
 326 /**
 327  * Spawn a decoder thread outside of the input thread.
 328  */
 329 decoder_t *input_DecoderCreate( vlc_object_t *p_parent, es_format_t *fmt,
 330                                 input_resource_t *p_resource )
 331 {
 332     return decoder_New( p_parent, NULL, fmt, NULL, p_resource, NULL );
 333 }
 334
 335
 336 /**
 337  * Kills a decoder thread and waits until it's finished
 338  *
 339  * \param p_input the input thread
 340  * \param p_es the es descriptor
 341  * \return nothing
 342  */
 343 void input_DecoderDelete( decoder_t *p_dec )
 344 {
 345     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 346
 347     vlc_cancel( p_owner->thread );
 348
 349     /* Make sure we aren't paused/buffering/waiting/decoding anymore */
 350     vlc_mutex_lock( &p_owner->lock );
 351     const bool b_was_paused = p_owner->b_paused;
 352     p_owner->b_paused = false;
 353     p_owner->b_buffering = false;
 354     p_owner->b_flushing = true;
 355     p_owner->b_exit = true;
 356     vlc_cond_signal( &p_owner->wait_request );
 357     vlc_mutex_unlock( &p_owner->lock );
 358
 359     vlc_join( p_owner->thread, NULL );
 360     p_owner->b_paused = b_was_paused;
 361
 362     module_unneed( p_dec, p_dec->p_module );
 363
 364     /* */
 365     if( p_dec->p_owner->cc.b_supported )
 366     {
 367         int i;
 368         for( i = 0; i < 4; i++ )
 369             input_DecoderSetCcState( p_dec, false, i );
 370     }
 371
 372     /* Delete decoder */
 373     DeleteDecoder( p_dec );
 374 }
 375
 376 /**
 377  * Put a block_t in the decoder's fifo.
 378  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 379  *
 380  * \param p_dec the decoder object
 381  * \param p_block the data block
 382  */
 383 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block, bool b_do_pace )
 384 {
 385     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 386
 387     if( b_do_pace )
 388     {
 389         /* The fifo is not consummed when buffering and so will
 390          * deadlock vlc.
 391          * There is no need to lock as b_buffering is never modify
 392          * inside decoder thread. */
 393         if( !p_owner->b_buffering )
 394             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 395     }
 396 #ifdef __arm__
 397     else if( block_FifoSize( p_owner->p_fifo ) > 50*1024*1024 /* 50 MiB */ )
 398 #else
 399     else if( block_FifoSize( p_owner->p_fifo ) > 400*1024*1024 /* 400 MiB, ie ~ 50mb/s for 60s */ )
 400 #endif
 401     {
 402         /* FIXME: ideally we would check the time amount of data
 403          * in the FIFO instead of its size. */
 404         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 405                   "consumed quickly enough), resetting fifo!" );
 406         block_FifoEmpty( p_owner->p_fifo );
 407     }
 408
 409     block_FifoPut( p_owner->p_fifo, p_block );
 410 }
 411
 412 bool input_DecoderIsEmpty( decoder_t * p_dec )
 413 {
 414     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 415     assert( !p_owner->b_buffering );
 416
 417     bool b_empty = block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 418     if( b_empty )
 419     {
 420         vlc_mutex_lock( &p_owner->lock );
 421         /* TODO subtitles support */
 422         if( p_dec->fmt_out.i_cat == VIDEO_ES && p_owner->p_vout )
 423             b_empty = vout_IsEmpty( p_owner->p_vout );
 424         else if( p_dec->fmt_out.i_cat == AUDIO_ES && p_owner->p_aout )
 425             b_empty = aout_DecIsEmpty( p_owner->p_aout );
 426         vlc_mutex_unlock( &p_owner->lock );
 427     }
 428     return b_empty;
 429 }
 430
 431 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 432 {
 433     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 434     int i;
 435
 436     vlc_mutex_lock( &p_owner->lock );
 437     for( i = 0; i < 4; i++ )
 438         pb_present[i] =  p_owner->cc.pb_present[i];
 439     vlc_mutex_unlock( &p_owner->lock );
 440 }
 441 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 442 {
 443     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 444
 445     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 446
 447     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 448         return VLC_EGENERIC;
 449
 450     if( b_decode )
 451     {
 452         static const vlc_fourcc_t fcc[4] = {
 453             VLC_FOURCC('c', 'c', '1', ' '),
 454             VLC_FOURCC('c', 'c', '2', ' '),
 455             VLC_FOURCC('c', 'c', '3', ' '),
 456             VLC_FOURCC('c', 'c', '4', ' '),
 457         };
 458         decoder_t *p_cc;
 459         es_format_t fmt;
 460
 461         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 462         p_cc = CreateDecoder( VLC_OBJECT(p_dec), p_owner->p_input, &fmt,
 463                               false, p_owner->p_resource, p_owner->p_sout );
 464         if( !p_cc )
 465         {
 466             msg_Err( p_dec, "could not create decoder" );
 467             dialog_Fatal( p_dec, _("Streaming / Transcoding failed"), "%s",
 468                           _("VLC could not open the decoder module.") );
 469             return VLC_EGENERIC;
 470         }
 471         else if( !p_cc->p_module )
 472         {
 473             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 474             DeleteDecoder( p_cc );
 475             return VLC_EGENERIC;
 476         }
 477         p_cc->p_owner->p_clock = p_owner->p_clock;
 478
 479         vlc_mutex_lock( &p_owner->lock );
 480         p_owner->cc.pp_decoder[i_channel] = p_cc;
 481         vlc_mutex_unlock( &p_owner->lock );
 482     }
 483     else
 484     {
 485         decoder_t *p_cc;
 486
 487         vlc_mutex_lock( &p_owner->lock );
 488         p_cc = p_owner->cc.pp_decoder[i_channel];
 489         p_owner->cc.pp_decoder[i_channel] = NULL;
 490         vlc_mutex_unlock( &p_owner->lock );
 491
 492         if( p_cc )
 493         {
 494             module_unneed( p_cc, p_cc->p_module );
 495             DeleteDecoder( p_cc );
 496         }
 497     }
 498     return VLC_SUCCESS;
 499 }
 500 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 501 {
 502     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 503
 504     *pb_decode = false;
 505     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 506         return VLC_EGENERIC;
 507
 508     vlc_mutex_lock( &p_owner->lock );
 509     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 510     vlc_mutex_unlock( &p_owner->lock );
 511     return VLC_EGENERIC;
 512 }
 513
 514 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 515 {
 516     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 517
 518     vlc_mutex_lock( &p_owner->lock );
 519
 520     assert( !p_owner->b_paused || !b_paused );
 521
 522     p_owner->b_paused = b_paused;
 523     p_owner->pause.i_date = i_date;
 524     p_owner->pause.i_ignore = 0;
 525     vlc_cond_signal( &p_owner->wait_request );
 526
 527     DecoderOutputChangePause( p_dec, b_paused, i_date );
 528
 529     vlc_mutex_unlock( &p_owner->lock );
 530 }
 531
 532 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 533 {
 534     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 535
 536     vlc_mutex_lock( &p_owner->lock );
 537     p_owner->i_ts_delay = i_delay;
 538     vlc_mutex_unlock( &p_owner->lock );
 539 }
 540
 541 void input_DecoderStartBuffering( decoder_t *p_dec )
 542 {
 543     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 544
 545     vlc_mutex_lock( &p_owner->lock );
 546
 547     DecoderFlush( p_dec );
 548
 549     p_owner->buffer.b_first = true;
 550     p_owner->buffer.b_full = false;
 551     p_owner->buffer.i_count = 0;
 552
 553     assert( !p_owner->buffer.p_picture && !p_owner->buffer.p_subpic &&
 554             !p_owner->buffer.p_audio && !p_owner->buffer.p_block );
 555
 556     p_owner->buffer.p_picture = NULL;
 557     p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
 558
 559     p_owner->buffer.p_subpic = NULL;
 560     p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
 561
 562     p_owner->buffer.p_audio = NULL;
 563     p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
 564
 565     p_owner->buffer.p_block = NULL;
 566     p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
 567
 568
 569     p_owner->b_buffering = true;
 570
 571     vlc_cond_signal( &p_owner->wait_request );
 572
 573     vlc_mutex_unlock( &p_owner->lock );
 574 }
 575
 576 void input_DecoderStopBuffering( decoder_t *p_dec )
 577 {
 578     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 579
 580     vlc_mutex_lock( &p_owner->lock );
 581
 582     p_owner->b_buffering = false;
 583
 584     vlc_cond_signal( &p_owner->wait_request );
 585
 586     vlc_mutex_unlock( &p_owner->lock );
 587 }
 588
 589 void input_DecoderWaitBuffering( decoder_t *p_dec )
 590 {
 591     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 592
 593     vlc_mutex_lock( &p_owner->lock );
 594
 595     while( p_owner->b_buffering && !p_owner->buffer.b_full )
 596     {
 597         block_FifoWake( p_owner->p_fifo );
 598         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
 599     }
 600
 601     vlc_mutex_unlock( &p_owner->lock );
 602 }
 603
 604 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 605 {
 606     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 607
 608     *pi_duration = 0;
 609
 610     vlc_mutex_lock( &p_owner->lock );
 611     if( p_dec->fmt_out.i_cat == VIDEO_ES )
 612     {
 613         if( p_owner->b_paused && p_owner->p_vout )
 614         {
 615             vout_NextPicture( p_owner->p_vout, pi_duration );
 616             p_owner->pause.i_ignore++;
 617             vlc_cond_signal( &p_owner->wait_request );
 618         }
 619     }
 620     else
 621     {
 622         /* TODO subtitle should not be flushed */
 623         DecoderFlush( p_dec );
 624     }
 625     vlc_mutex_unlock( &p_owner->lock );
 626 }
 627
 628 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
 629 {
 630     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 631     bool b_changed;
 632
 633     vlc_mutex_lock( &p_owner->lock );
 634     b_changed = p_owner->b_fmt_description;
 635     if( b_changed )
 636     {
 637         if( p_fmt )
 638             es_format_Copy( p_fmt, &p_owner->fmt_description );
 639
 640         if( pp_meta )
 641         {
 642             *pp_meta = NULL;
 643             if( p_owner->p_description )
 644             {
 645                 *pp_meta = vlc_meta_New();
 646                 if( *pp_meta )
 647                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
 648             }
 649         }
 650         p_owner->b_fmt_description = false;
 651     }
 652     vlc_mutex_unlock( &p_owner->lock );
 653     return b_changed;
 654 }
 655
 656 size_t input_DecoderGetFifoSize( decoder_t *p_dec )
 657 {
 658     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 659
 660     return block_FifoSize( p_owner->p_fifo );
 661 }
 662
 663 void input_DecoderGetObjects( decoder_t *p_dec,
 664                               vout_thread_t **pp_vout, audio_output_t **pp_aout )
 665 {
 666     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 667
 668     vlc_mutex_lock( &p_owner->lock );
 669     if( pp_vout )
 670         *pp_vout = p_owner->p_vout ? vlc_object_hold( p_owner->p_vout ) : NULL;
 671     if( pp_aout )
 672         *pp_aout = p_owner->p_aout ? vlc_object_hold( p_owner->p_aout ) : NULL;
 673     vlc_mutex_unlock( &p_owner->lock );
 674 }
 675
 676 /*****************************************************************************
 677  * Internal functions
 678  *****************************************************************************/
 679 static int DecoderGetInputAttachments( decoder_t *p_dec,
 680                                        input_attachment_t ***ppp_attachment,
 681                                        int *pi_attachment )
 682 {
 683     input_thread_t *p_input = p_dec->p_owner->p_input;
 684
 685     if( unlikely(p_input == NULL) )
 686         return VLC_ENOOBJ;
 687     return input_Control( p_input, INPUT_GET_ATTACHMENTS,
 688                           ppp_attachment, pi_attachment );
 689 }
 690 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 691 {
 692     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 693
 694     vlc_mutex_lock( &p_owner->lock );
 695     if( p_owner->b_buffering || p_owner->b_paused )
 696         i_ts = VLC_TS_INVALID;
 697     vlc_mutex_unlock( &p_owner->lock );
 698
 699     if( !p_owner->p_clock || i_ts <= VLC_TS_INVALID )
 700         return i_ts;
 701
 702     if( input_clock_ConvertTS( p_owner->p_clock, NULL, &i_ts, NULL, INT64_MAX ) )
 703         return VLC_TS_INVALID;
 704
 705     return i_ts;
 706 }
 707 static int DecoderGetDisplayRate( decoder_t *p_dec )
 708 {
 709     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 710
 711     if( !p_owner->p_clock )
 712         return INPUT_RATE_DEFAULT;
 713     return input_clock_GetRate( p_owner->p_clock );
 714 }
 715
 716 /* */
 717 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 718 {
 719     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'. "
 720              "VLC probably does not support this sound or video format.",
 721              (char*)&codec );
 722     dialog_Fatal( p_dec, _("No suitable decoder module"),
 723                  _("VLC does not support the audio or video format \"%4.4s\". "
 724                   "Unfortunately there is no way for you to fix this."),
 725                   (char*)&codec );
 726 }
 727
 728
 729 /**
 730  * Create a decoder object
 731  *
 732  * \param p_input the input thread
 733  * \param p_es the es descriptor
 734  * \param b_packetizer instead of a decoder
 735  * \return the decoder object
 736  */
 737 static decoder_t * CreateDecoder( vlc_object_t *p_parent,
 738                                   input_thread_t *p_input,
 739                                   es_format_t *fmt, bool b_packetizer,
 740                                   input_resource_t *p_resource,
 741                                   sout_instance_t *p_sout )
 742 {
 743     decoder_t *p_dec;
 744     decoder_owner_sys_t *p_owner;
 745     es_format_t null_es_format;
 746
 747     p_dec = vlc_custom_create( p_parent, sizeof( *p_dec ), "decoder" );
 748     if( p_dec == NULL )
 749         return NULL;
 750
 751     p_dec->pf_decode_audio = NULL;
 752     p_dec->pf_decode_video = NULL;
 753     p_dec->pf_decode_sub = NULL;
 754     p_dec->pf_get_cc = NULL;
 755     p_dec->pf_packetize = NULL;
 756
 757     /* Initialize the decoder */
 758     p_dec->p_module = NULL;
 759
 760     memset( &null_es_format, 0, sizeof(es_format_t) );
 761     es_format_Copy( &p_dec->fmt_in, fmt );
 762     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 763
 764     p_dec->p_description = NULL;
 765
 766     /* Allocate our private structure for the decoder */
 767     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 768     if( unlikely(p_owner == NULL) )
 769     {
 770         vlc_object_release( p_dec );
 771         return NULL;
 772     }
 773     p_owner->i_preroll_end = VLC_TS_INVALID;
 774     p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 775     p_owner->p_input = p_input;
 776     p_owner->p_resource = p_resource;
 777     p_owner->p_aout = NULL;
 778     p_owner->p_vout = NULL;
 779     p_owner->p_spu_vout = NULL;
 780     p_owner->i_spu_channel = 0;
 781     p_owner->i_spu_order = 0;
 782     p_owner->p_sout = p_sout;
 783     p_owner->p_sout_input = NULL;
 784     p_owner->p_packetizer = NULL;
 785     p_owner->b_packetizer = b_packetizer;
 786
 787     /* decoder fifo */
 788     p_owner->p_fifo = block_FifoNew();
 789     if( unlikely(p_owner->p_fifo == NULL) )
 790     {
 791         free( p_owner );
 792         vlc_object_release( p_dec );
 793         return NULL;
 794     }
 795
 796     /* Set buffers allocation callbacks for the decoders */
 797     p_dec->pf_aout_buffer_new = aout_new_buffer;
 798     p_dec->pf_vout_buffer_new = vout_new_buffer;
 799     p_dec->pf_vout_buffer_del = vout_del_buffer;
 800     p_dec->pf_picture_link    = vout_link_picture;
 801     p_dec->pf_picture_unlink  = vout_unlink_picture;
 802     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 803     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 804     /* */
 805     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 806     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 807     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 808
 809     /* Find a suitable decoder/packetizer module */
 810     if( !b_packetizer )
 811         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
 812     else
 813         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
 814
 815     /* Check if decoder requires already packetized data */
 816     if( !b_packetizer &&
 817         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 818     {
 819         p_owner->p_packetizer =
 820             vlc_custom_create( p_parent, sizeof( decoder_t ), "packetizer" );
 821         if( p_owner->p_packetizer )
 822         {
 823             es_format_Copy( &p_owner->p_packetizer->fmt_in,
 824                             &p_dec->fmt_in );
 825
 826             es_format_Copy( &p_owner->p_packetizer->fmt_out,
 827                             &null_es_format );
 828
 829             p_owner->p_packetizer->p_module =
 830                 module_need( p_owner->p_packetizer,
 831                              "packetizer", "$packetizer", false );
 832
 833             if( !p_owner->p_packetizer->p_module )
 834             {
 835                 es_format_Clean( &p_owner->p_packetizer->fmt_in );
 836                 vlc_object_release( p_owner->p_packetizer );
 837             }
 838         }
 839     }
 840
 841     /* Copy ourself the input replay gain */
 842     if( fmt->i_cat == AUDIO_ES )
 843     {
 844         for( unsigned i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 845         {
 846             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 847             {
 848                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 849                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 850             }
 851             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 852             {
 853                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 854                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 855             }
 856         }
 857     }
 858
 859     /* */
 860     vlc_mutex_init( &p_owner->lock );
 861     vlc_cond_init( &p_owner->wait_request );
 862     vlc_cond_init( &p_owner->wait_acknowledge );
 863
 864     p_owner->b_fmt_description = false;
 865     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 866     p_owner->p_description = NULL;
 867
 868     p_owner->b_exit = false;
 869
 870     p_owner->b_paused = false;
 871     p_owner->pause.i_date = VLC_TS_INVALID;
 872     p_owner->pause.i_ignore = 0;
 873
 874     p_owner->b_buffering = false;
 875     p_owner->buffer.b_first = true;
 876     p_owner->buffer.b_full = false;
 877     p_owner->buffer.i_count = 0;
 878     p_owner->buffer.p_picture = NULL;
 879     p_owner->buffer.p_subpic = NULL;
 880     p_owner->buffer.p_audio = NULL;
 881     p_owner->buffer.p_block = NULL;
 882
 883     p_owner->b_flushing = false;
 884
 885     /* */
 886     p_owner->cc.b_supported = false;
 887     if( !b_packetizer )
 888     {
 889         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 890             p_owner->cc.b_supported = true;
 891         if( p_dec->pf_get_cc )
 892             p_owner->cc.b_supported = true;
 893     }
 894
 895     for( unsigned i = 0; i < 4; i++ )
 896     {
 897         p_owner->cc.pb_present[i] = false;
 898         p_owner->cc.pp_decoder[i] = NULL;
 899     }
 900     p_owner->i_ts_delay = 0;
 901     return p_dec;
 902 }
 903
 904 /**
 905  * The decoding main loop
 906  *
 907  * \param p_dec the decoder
 908  */
 909 static void *DecoderThread( void *p_data )
 910 {
 911     decoder_t *p_dec = (decoder_t *)p_data;
 912     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 913
 914     /* The decoder's main loop */
 915     for( ;; )
 916     {
 917         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 918
 919         /* Make sure there is no cancellation point other than this one^^.
 920          * If you need one, be sure to push cleanup of p_block. */
 921         DecoderSignalBuffering( p_dec, p_block == NULL );
 922
 923         if( p_block )
 924         {
 925             int canc = vlc_savecancel();
 926
 927             if( p_block->i_flags & BLOCK_FLAG_CORE_EOS )
 928             {
 929                 /* calling DecoderProcess() with NULL block will make
 930                  * decoders/packetizers flush their buffers */
 931                 block_Release( p_block );
 932                 p_block = NULL;
 933             }
 934
 935             if( p_dec->b_error )
 936                 DecoderError( p_dec, p_block );
 937             else
 938                 DecoderProcess( p_dec, p_block );
 939
 940             vlc_restorecancel( canc );
 941         }
 942     }
 943     return NULL;
 944 }
 945
 946 static block_t *DecoderBlockFlushNew()
 947 {
 948     block_t *p_null = block_Alloc( 128 );
 949     if( !p_null )
 950         return NULL;
 951
 952     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY |
 953                        BLOCK_FLAG_CORRUPTED |
 954                        BLOCK_FLAG_CORE_FLUSH;
 955     memset( p_null->p_buffer, 0, p_null->i_buffer );
 956
 957     return p_null;
 958 }
 959
 960 static void DecoderFlush( decoder_t *p_dec )
 961 {
 962     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 963
 964     vlc_assert_locked( &p_owner->lock );
 965
 966     /* Empty the fifo */
 967     block_FifoEmpty( p_owner->p_fifo );
 968
 969     /* Monitor for flush end */
 970     p_owner->b_flushing = true;
 971     vlc_cond_signal( &p_owner->wait_request );
 972
 973     /* Send a special block */
 974     block_t *p_null = DecoderBlockFlushNew();
 975     if( !p_null )
 976         return;
 977     input_DecoderDecode( p_dec, p_null, false );
 978
 979     /* */
 980     while( p_owner->b_flushing )
 981         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
 982 }
 983
 984 static void DecoderSignalBuffering( decoder_t *p_dec, bool b_full )
 985 {
 986     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 987
 988     vlc_mutex_lock( &p_owner->lock );
 989
 990     if( p_owner->b_buffering )
 991     {
 992         if( b_full )
 993             p_owner->buffer.b_full = true;
 994         vlc_cond_signal( &p_owner->wait_acknowledge );
 995     }
 996
 997     vlc_mutex_unlock( &p_owner->lock );
 998 }
 999
1000 static bool DecoderIsFlushing( decoder_t *p_dec )
1001 {
1002     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1003     bool b_flushing;
1004
1005     vlc_mutex_lock( &p_owner->lock );
1006
1007     b_flushing = p_owner->b_flushing;
1008
1009     vlc_mutex_unlock( &p_owner->lock );
1010
1011     return b_flushing;
1012 }
1013
1014 static void DecoderWaitUnblock( decoder_t *p_dec, bool *pb_reject )
1015 {
1016     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1017
1018     vlc_assert_locked( &p_owner->lock );
1019
1020     while( !p_owner->b_flushing )
1021     {
1022         if( p_owner->b_paused )
1023         {
1024             if( p_owner->b_buffering && !p_owner->buffer.b_full )
1025                 break;
1026             if( p_owner->pause.i_ignore > 0 )
1027             {
1028                 p_owner->pause.i_ignore--;
1029                 break;
1030             }
1031         }
1032         else
1033         {
1034             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
1035                 break;
1036         }
1037         vlc_cond_wait( &p_owner->wait_request, &p_owner->lock );
1038     }
1039
1040     if( pb_reject )
1041         *pb_reject = p_owner->b_flushing;
1042 }
1043
1044 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
1045 {
1046     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1047
1048     vlc_assert_locked( &p_owner->lock );
1049
1050     /* XXX only audio and video output have to be paused.
1051      * - for sout it is useless
1052      * - for subs, it is done by the vout
1053      */
1054     if( p_dec->fmt_out.i_cat == AUDIO_ES )
1055     {
1056         if( p_owner->p_aout )
1057             aout_DecChangePause( p_owner->p_aout, b_paused, i_date );
1058     }
1059     else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1060     {
1061         if( p_owner->p_vout )
1062             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1063     }
1064 }
1065 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1066 {
1067     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1068         *pi_preroll = INT64_MAX;
1069     else if( p->i_dts > VLC_TS_INVALID )
1070         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1071     else if( p->i_pts > VLC_TS_INVALID )
1072         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1073 }
1074
1075 static mtime_t DecoderTeletextFixTs( mtime_t i_ts )
1076 {
1077     mtime_t current_date = mdate();
1078
1079     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
1080     if( i_ts <= VLC_TS_INVALID || i_ts > current_date + 10000000 || i_ts < current_date )
1081     {
1082         /* ETSI EN 300 472 Annex A : do not take into account the PTS
1083          * for teletext streams. */
1084         return current_date + 400000;
1085     }
1086     return i_ts;
1087 }
1088
1089 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1090                           mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound, bool b_telx )
1091 {
1092     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1093     input_clock_t   *p_clock = p_owner->p_clock;
1094
1095     vlc_assert_locked( &p_owner->lock );
1096
1097     const mtime_t i_es_delay = p_owner->i_ts_delay;
1098
1099     if( p_clock )
1100     {
1101         const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1102         int i_rate;
1103
1104         if( *pi_ts0 > VLC_TS_INVALID )
1105         {
1106             *pi_ts0 += i_es_delay;
1107             if( pi_ts1 && *pi_ts1 > VLC_TS_INVALID )
1108                 *pi_ts1 += i_es_delay;
1109             if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) )
1110                 *pi_ts0 = VLC_TS_INVALID;
1111         }
1112         else
1113         {
1114             i_rate = input_clock_GetRate( p_clock );
1115         }
1116
1117         /* Do not create ephemere data because of rounding errors */
1118         if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1119             *pi_ts1 += 1;
1120
1121         if( pi_duration )
1122             *pi_duration = ( *pi_duration * i_rate +
1123                                     INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
1124
1125         if( pi_rate )
1126             *pi_rate = i_rate;
1127
1128         if( b_telx )
1129         {
1130             *pi_ts0 = DecoderTeletextFixTs( *pi_ts0 );
1131             if( pi_ts1 && *pi_ts1 <= VLC_TS_INVALID )
1132                 *pi_ts1 = *pi_ts0;
1133         }
1134     }
1135 }
1136
1137 static bool DecoderIsExitRequested( decoder_t *p_dec )
1138 {
1139     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1140
1141     vlc_mutex_lock( &p_owner->lock );
1142     bool b_exit = p_owner->b_exit;
1143     vlc_mutex_unlock( &p_owner->lock );
1144
1145     return b_exit;
1146 }
1147
1148 /**
1149  * If *pb_reject, it does nothing, otherwise it waits for the given
1150  * deadline or a flush request (in which case it set *pi_reject to true.
1151  */
1152 static void DecoderWaitDate( decoder_t *p_dec,
1153                              bool *pb_reject, mtime_t i_deadline )
1154 {
1155     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1156
1157     if( *pb_reject || i_deadline < 0 )
1158         return;
1159
1160     for( ;; )
1161     {
1162         vlc_mutex_lock( &p_owner->lock );
1163         if( p_owner->b_flushing || p_owner->b_exit )
1164         {
1165             *pb_reject = true;
1166             vlc_mutex_unlock( &p_owner->lock );
1167             break;
1168         }
1169         int i_ret = vlc_cond_timedwait( &p_owner->wait_request, &p_owner->lock,
1170                                         i_deadline );
1171         vlc_mutex_unlock( &p_owner->lock );
1172         if( i_ret )
1173             break;
1174     }
1175 }
1176
1177 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1178                               int *pi_played_sum, int *pi_lost_sum )
1179 {
1180     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1181     audio_output_t *p_aout = p_owner->p_aout;
1182
1183     /* */
1184     if( p_audio->i_pts <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify audio_output/*
1185     {
1186         msg_Warn( p_dec, "non-dated audio buffer received" );
1187         *pi_lost_sum += 1;
1188         aout_BufferFree( p_audio );
1189         return;
1190     }
1191
1192     /* */
1193     vlc_mutex_lock( &p_owner->lock );
1194
1195     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1196     {
1197         p_audio->p_next = NULL;
1198
1199         *p_owner->buffer.pp_audio_next = p_audio;
1200         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1201
1202         p_owner->buffer.i_count++;
1203         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1204             p_audio->i_pts - p_owner->buffer.p_audio->i_pts > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1205         {
1206             p_owner->buffer.b_full = true;
1207             vlc_cond_signal( &p_owner->wait_acknowledge );
1208         }
1209     }
1210
1211     for( ;; )
1212     {
1213         bool b_has_more = false;
1214         bool b_reject;
1215         DecoderWaitUnblock( p_dec, &b_reject );
1216
1217         if( p_owner->b_buffering )
1218         {
1219             vlc_mutex_unlock( &p_owner->lock );
1220             return;
1221         }
1222
1223         /* */
1224         if( p_owner->buffer.p_audio )
1225         {
1226             p_audio = p_owner->buffer.p_audio;
1227
1228             p_owner->buffer.p_audio = p_audio->p_next;
1229             p_owner->buffer.i_count--;
1230
1231             b_has_more = p_owner->buffer.p_audio != NULL;
1232             if( !b_has_more )
1233                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1234         }
1235
1236         /* */
1237         const bool b_dated = p_audio->i_pts > VLC_TS_INVALID;
1238         int i_rate = INPUT_RATE_DEFAULT;
1239
1240         DecoderFixTs( p_dec, &p_audio->i_pts, NULL, &p_audio->i_length,
1241                       &i_rate, AOUT_MAX_ADVANCE_TIME, false );
1242
1243         vlc_mutex_unlock( &p_owner->lock );
1244
1245         if( !p_aout ||
1246             p_audio->i_pts <= VLC_TS_INVALID ||
1247             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1248             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1249             b_reject = true;
1250
1251         DecoderWaitDate( p_dec, &b_reject,
1252                          p_audio->i_pts - AOUT_MAX_PREPARE_TIME );
1253
1254         if( !b_reject )
1255         {
1256             if( !aout_DecPlay( p_aout, p_audio, i_rate ) )
1257                 *pi_played_sum += 1;
1258             *pi_lost_sum += aout_DecGetResetLost( p_aout );
1259         }
1260         else
1261         {
1262             if( b_dated )
1263                 msg_Warn( p_dec, "received buffer in the future" );
1264             else
1265                 msg_Warn( p_dec, "non-dated audio buffer received" );
1266
1267             *pi_lost_sum += 1;
1268             aout_BufferFree( p_audio );
1269         }
1270
1271         if( !b_has_more )
1272             break;
1273
1274         vlc_mutex_lock( &p_owner->lock );
1275         if( !p_owner->buffer.p_audio )
1276         {
1277             vlc_mutex_unlock( &p_owner->lock );
1278             break;
1279         }
1280     }
1281 }
1282
1283 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1284 {
1285     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1286     aout_buffer_t   *p_aout_buf;
1287     int i_decoded = 0;
1288     int i_lost = 0;
1289     int i_played = 0;
1290
1291     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1292     {
1293         audio_output_t *p_aout = p_owner->p_aout;
1294
1295         if( DecoderIsExitRequested( p_dec ) )
1296         {
1297             /* It prevent freezing VLC in case of broken decoder */
1298             aout_DecDeleteBuffer( p_aout, p_aout_buf );
1299             if( p_block )
1300                 block_Release( p_block );
1301             break;
1302         }
1303         i_decoded++;
1304
1305         if( p_owner->i_preroll_end > VLC_TS_INVALID &&
1306             p_aout_buf->i_pts < p_owner->i_preroll_end )
1307         {
1308             aout_DecDeleteBuffer( p_aout, p_aout_buf );
1309             continue;
1310         }
1311
1312         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1313         {
1314             msg_Dbg( p_dec, "End of audio preroll" );
1315             if( p_owner->p_aout )
1316                 aout_DecFlush( p_owner->p_aout );
1317             /* */
1318             p_owner->i_preroll_end = VLC_TS_INVALID;
1319         }
1320
1321         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1322     }
1323
1324     /* Update ugly stat */
1325     input_thread_t  *p_input = p_owner->p_input;
1326
1327     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_played > 0) )
1328     {
1329         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1330
1331         stats_UpdateInteger( p_input->p->counters.p_lost_abuffers,
1332                              i_lost, NULL );
1333         stats_UpdateInteger( p_input->p->counters.p_played_abuffers,
1334                              i_played, NULL );
1335         stats_UpdateInteger( p_input->p->counters.p_decoded_audio,
1336                              i_decoded, NULL );
1337
1338         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1339     }
1340 }
1341 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1342 {
1343     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1344     block_t *p_cc;
1345     bool pb_present[4];
1346     bool b_processed = false;
1347     int i;
1348     int i_cc_decoder;
1349
1350     assert( p_dec_cc->pf_get_cc != NULL );
1351
1352     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1353     if( !p_owner->cc.b_supported )
1354         return;
1355
1356     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1357     if( !p_cc )
1358         return;
1359
1360     vlc_mutex_lock( &p_owner->lock );
1361     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1362     {
1363         p_owner->cc.pb_present[i] |= pb_present[i];
1364         if( p_owner->cc.pp_decoder[i] )
1365             i_cc_decoder++;
1366     }
1367
1368     for( i = 0; i < 4; i++ )
1369     {
1370         if( !p_owner->cc.pp_decoder[i] )
1371             continue;
1372
1373         if( i_cc_decoder > 1 )
1374             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1375         else
1376             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1377         i_cc_decoder--;
1378         b_processed = true;
1379     }
1380     vlc_mutex_unlock( &p_owner->lock );
1381
1382     if( !b_processed )
1383         block_Release( p_cc );
1384 }
1385
1386 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1387                               int *pi_played_sum, int *pi_lost_sum )
1388 {
1389     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1390     vout_thread_t  *p_vout = p_owner->p_vout;
1391     bool b_first_buffered;
1392
1393     if( p_picture->date <= VLC_TS_INVALID )
1394     {
1395         msg_Warn( p_dec, "non-dated video buffer received" );
1396         *pi_lost_sum += 1;
1397         vout_ReleasePicture( p_vout, p_picture );
1398         return;
1399     }
1400
1401     /* */
1402     vlc_mutex_lock( &p_owner->lock );
1403
1404     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1405     {
1406         p_picture->p_next = NULL;
1407
1408         *p_owner->buffer.pp_picture_next = p_picture;
1409         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1410
1411         p_owner->buffer.i_count++;
1412         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1413             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1414         {
1415             p_owner->buffer.b_full = true;
1416             vlc_cond_signal( &p_owner->wait_acknowledge );
1417         }
1418     }
1419     b_first_buffered = p_owner->buffer.p_picture != NULL;
1420
1421     for( ;; b_first_buffered = false )
1422     {
1423         bool b_has_more = false;
1424
1425         bool b_reject;
1426
1427         DecoderWaitUnblock( p_dec, &b_reject );
1428
1429         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1430         {
1431             vlc_mutex_unlock( &p_owner->lock );
1432             return;
1433         }
1434         bool b_buffering_first = p_owner->b_buffering;
1435
1436         /* */
1437         if( p_owner->buffer.p_picture )
1438         {
1439             p_picture = p_owner->buffer.p_picture;
1440
1441             p_owner->buffer.p_picture = p_picture->p_next;
1442             p_owner->buffer.i_count--;
1443
1444             b_has_more = p_owner->buffer.p_picture != NULL;
1445             if( !b_has_more )
1446                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1447         }
1448
1449         /* */
1450         if( b_buffering_first )
1451         {
1452             assert( p_owner->buffer.b_first );
1453             assert( !p_owner->buffer.i_count );
1454             msg_Dbg( p_dec, "Received first picture" );
1455             p_owner->buffer.b_first = false;
1456             p_picture->b_force = true;
1457         }
1458
1459         const bool b_dated = p_picture->date > VLC_TS_INVALID;
1460         int i_rate = INPUT_RATE_DEFAULT;
1461         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1462                       &i_rate, DECODER_BOGUS_VIDEO_DELAY, false );
1463
1464         vlc_mutex_unlock( &p_owner->lock );
1465
1466         /* */
1467         if( !p_picture->b_force && p_picture->date <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify video_output/*
1468             b_reject = true;
1469
1470         if( !b_reject )
1471         {
1472             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1473             {
1474                 /* Be sure to not display old picture after our own */
1475                 vout_Flush( p_vout, p_picture->date );
1476                 p_owner->i_last_rate = i_rate;
1477             }
1478             vout_PutPicture( p_vout, p_picture );
1479         }
1480         else
1481         {
1482             if( b_dated )
1483                 msg_Warn( p_dec, "early picture skipped" );
1484             else
1485                 msg_Warn( p_dec, "non-dated video buffer received" );
1486
1487             *pi_lost_sum += 1;
1488             vout_ReleasePicture( p_vout, p_picture );
1489         }
1490         int i_tmp_display;
1491         int i_tmp_lost;
1492         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1493
1494         *pi_played_sum += i_tmp_display;
1495         *pi_lost_sum += i_tmp_lost;
1496
1497         if( !b_has_more || b_buffering_first )
1498             break;
1499
1500         vlc_mutex_lock( &p_owner->lock );
1501         if( !p_owner->buffer.p_picture )
1502         {
1503             vlc_mutex_unlock( &p_owner->lock );
1504             break;
1505         }
1506     }
1507 }
1508
1509 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1510 {
1511     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1512     picture_t      *p_pic;
1513     int i_lost = 0;
1514     int i_decoded = 0;
1515     int i_displayed = 0;
1516
1517     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1518     {
1519         vout_thread_t  *p_vout = p_owner->p_vout;
1520         if( DecoderIsExitRequested( p_dec ) )
1521         {
1522             /* It prevent freezing VLC in case of broken decoder */
1523             vout_ReleasePicture( p_vout, p_pic );
1524             if( p_block )
1525                 block_Release( p_block );
1526             break;
1527         }
1528
1529         i_decoded++;
1530
1531         if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
1532         {
1533             vout_ReleasePicture( p_vout, p_pic );
1534             continue;
1535         }
1536
1537         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1538         {
1539             msg_Dbg( p_dec, "End of video preroll" );
1540             if( p_vout )
1541                 vout_Flush( p_vout, VLC_TS_INVALID+1 );
1542             /* */
1543             p_owner->i_preroll_end = VLC_TS_INVALID;
1544         }
1545
1546         if( p_dec->pf_get_cc &&
1547             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1548             DecoderGetCc( p_dec, p_dec );
1549
1550         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1551     }
1552
1553     /* Update ugly stat */
1554     input_thread_t *p_input = p_owner->p_input;
1555
1556     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
1557     {
1558         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1559
1560         stats_UpdateInteger( p_input->p->counters.p_decoded_video,
1561                              i_decoded, NULL );
1562         stats_UpdateInteger( p_input->p->counters.p_lost_pictures,
1563                              i_lost , NULL);
1564
1565         stats_UpdateInteger( p_input->p->counters.p_displayed_pictures,
1566                              i_displayed, NULL);
1567
1568         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1569     }
1570 }
1571
1572 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic,
1573                             bool b_telx )
1574 {
1575     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1576     vout_thread_t *p_vout = p_owner->p_spu_vout;
1577
1578     /* */
1579     if( p_subpic->i_start <= VLC_TS_INVALID && !b_telx )
1580     {
1581         msg_Warn( p_dec, "non-dated spu buffer received" );
1582         subpicture_Delete( p_subpic );
1583         return;
1584     }
1585
1586     /* */
1587     vlc_mutex_lock( &p_owner->lock );
1588
1589     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1590     {
1591         p_subpic->p_next = NULL;
1592
1593         *p_owner->buffer.pp_subpic_next = p_subpic;
1594         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1595
1596         p_owner->buffer.i_count++;
1597         /* XXX it is important to be full after the first one */
1598         if( p_owner->buffer.i_count > 0 )
1599         {
1600             p_owner->buffer.b_full = true;
1601             vlc_cond_signal( &p_owner->wait_acknowledge );
1602         }
1603     }
1604
1605     for( ;; )
1606     {
1607         bool b_has_more = false;
1608         bool b_reject;
1609         DecoderWaitUnblock( p_dec, &b_reject );
1610
1611         if( p_owner->b_buffering )
1612         {
1613             vlc_mutex_unlock( &p_owner->lock );
1614             return;
1615         }
1616
1617         /* */
1618         if( p_owner->buffer.p_subpic )
1619         {
1620             p_subpic = p_owner->buffer.p_subpic;
1621
1622             p_owner->buffer.p_subpic = p_subpic->p_next;
1623             p_owner->buffer.i_count--;
1624
1625             b_has_more = p_owner->buffer.p_subpic != NULL;
1626             if( !b_has_more )
1627                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1628         }
1629
1630         /* */
1631         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1632                       NULL, INT64_MAX, b_telx );
1633
1634         vlc_mutex_unlock( &p_owner->lock );
1635
1636         if( p_subpic->i_start <= VLC_TS_INVALID )
1637             b_reject = true;
1638
1639         DecoderWaitDate( p_dec, &b_reject,
1640                          p_subpic->i_start - SPU_MAX_PREPARE_TIME );
1641
1642         if( !b_reject )
1643             vout_PutSubpicture( p_vout, p_subpic );
1644         else
1645             subpicture_Delete( p_subpic );
1646
1647         if( !b_has_more )
1648             break;
1649         vlc_mutex_lock( &p_owner->lock );
1650         if( !p_owner->buffer.p_subpic )
1651         {
1652             vlc_mutex_unlock( &p_owner->lock );
1653             break;
1654         }
1655     }
1656 }
1657
1658 #ifdef ENABLE_SOUT
1659 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block,
1660                              bool b_telx )
1661 {
1662     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1663
1664     assert( p_owner->p_clock );
1665     assert( !p_sout_block->p_next );
1666
1667     vlc_mutex_lock( &p_owner->lock );
1668
1669     if( p_owner->b_buffering || p_owner->buffer.p_block )
1670     {
1671         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1672
1673         p_owner->buffer.i_count++;
1674         /* XXX it is important to be full after the first one */
1675         if( p_owner->buffer.i_count > 0 )
1676         {
1677             p_owner->buffer.b_full = true;
1678             vlc_cond_signal( &p_owner->wait_acknowledge );
1679         }
1680     }
1681
1682     for( ;; )
1683     {
1684         bool b_has_more = false;
1685         bool b_reject;
1686         DecoderWaitUnblock( p_dec, &b_reject );
1687
1688         if( p_owner->b_buffering )
1689         {
1690             vlc_mutex_unlock( &p_owner->lock );
1691             return;
1692         }
1693
1694         /* */
1695         if( p_owner->buffer.p_block )
1696         {
1697             p_sout_block = p_owner->buffer.p_block;
1698
1699             p_owner->buffer.p_block = p_sout_block->p_next;
1700             p_owner->buffer.i_count--;
1701
1702             b_has_more = p_owner->buffer.p_block != NULL;
1703             if( !b_has_more )
1704                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1705         }
1706         p_sout_block->p_next = NULL;
1707
1708         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1709                       &p_sout_block->i_length, NULL, INT64_MAX, b_telx );
1710
1711         vlc_mutex_unlock( &p_owner->lock );
1712
1713         if( !b_reject )
1714             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block ); // FIXME --VLC_TS_INVALID inspect stream_output/*
1715         else
1716             block_Release( p_sout_block );
1717
1718         if( !b_has_more )
1719             break;
1720         vlc_mutex_lock( &p_owner->lock );
1721         if( !p_owner->buffer.p_block )
1722         {
1723             vlc_mutex_unlock( &p_owner->lock );
1724             break;
1725         }
1726     }
1727 }
1728 #endif
1729
1730 /* */
1731 static void DecoderFlushBuffering( decoder_t *p_dec )
1732 {
1733     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1734
1735     vlc_assert_locked( &p_owner->lock );
1736
1737     while( p_owner->buffer.p_picture )
1738     {
1739         picture_t *p_picture = p_owner->buffer.p_picture;
1740
1741         p_owner->buffer.p_picture = p_picture->p_next;
1742         p_owner->buffer.i_count--;
1743
1744         if( p_owner->p_vout )
1745         {
1746             vout_ReleasePicture( p_owner->p_vout, p_picture );
1747         }
1748
1749         if( !p_owner->buffer.p_picture )
1750             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1751     }
1752     while( p_owner->buffer.p_audio )
1753     {
1754         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1755
1756         p_owner->buffer.p_audio = p_audio->p_next;
1757         p_owner->buffer.i_count--;
1758
1759         aout_BufferFree( p_audio );
1760
1761         if( !p_owner->buffer.p_audio )
1762             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1763     }
1764     while( p_owner->buffer.p_subpic )
1765     {
1766         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1767
1768         p_owner->buffer.p_subpic = p_subpic->p_next;
1769         p_owner->buffer.i_count--;
1770
1771         subpicture_Delete( p_subpic );
1772
1773         if( !p_owner->buffer.p_subpic )
1774             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1775     }
1776     if( p_owner->buffer.p_block )
1777     {
1778         block_ChainRelease( p_owner->buffer.p_block );
1779
1780         p_owner->buffer.i_count = 0;
1781         p_owner->buffer.p_block = NULL;
1782         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1783     }
1784 }
1785
1786 #ifdef ENABLE_SOUT
1787 /* This function process a block for sout
1788  */
1789 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1790 {
1791     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1792     const bool b_telx = p_dec->fmt_in.i_codec == VLC_CODEC_TELETEXT;
1793     block_t *p_sout_block;
1794
1795     while( ( p_sout_block =
1796                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1797     {
1798         if( !p_owner->p_sout_input )
1799         {
1800             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1801
1802             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1803             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1804             if( p_dec->fmt_in.psz_language )
1805             {
1806                 free( p_owner->sout.psz_language );
1807                 p_owner->sout.psz_language =
1808                     strdup( p_dec->fmt_in.psz_language );
1809             }
1810
1811             p_owner->p_sout_input =
1812                 sout_InputNew( p_owner->p_sout,
1813                                &p_owner->sout );
1814
1815             if( p_owner->p_sout_input == NULL )
1816             {
1817                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1818                          (char *)&p_owner->sout.i_codec );
1819                 p_dec->b_error = true;
1820
1821                 while( p_sout_block )
1822                 {
1823                     block_t *p_next = p_sout_block->p_next;
1824                     block_Release( p_sout_block );
1825                     p_sout_block = p_next;
1826                 }
1827                 break;
1828             }
1829         }
1830
1831         while( p_sout_block )
1832         {
1833             block_t *p_next = p_sout_block->p_next;
1834
1835             p_sout_block->p_next = NULL;
1836
1837             DecoderPlaySout( p_dec, p_sout_block, b_telx );
1838
1839             p_sout_block = p_next;
1840         }
1841     }
1842 }
1843 #endif
1844
1845 /* This function process a video block
1846  */
1847 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1848 {
1849     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1850
1851     if( p_owner->p_packetizer )
1852     {
1853         block_t *p_packetized_block;
1854         decoder_t *p_packetizer = p_owner->p_packetizer;
1855
1856         while( (p_packetized_block =
1857                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1858         {
1859             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1860             {
1861                 es_format_Clean( &p_dec->fmt_in );
1862                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1863             }
1864             if( p_packetizer->pf_get_cc )
1865                 DecoderGetCc( p_dec, p_packetizer );
1866
1867             while( p_packetized_block )
1868             {
1869                 block_t *p_next = p_packetized_block->p_next;
1870                 p_packetized_block->p_next = NULL;
1871
1872                 DecoderDecodeVideo( p_dec, p_packetized_block );
1873
1874                 p_packetized_block = p_next;
1875             }
1876         }
1877         /* The packetizer does not output a block that tell the decoder to flush
1878          * do it ourself */
1879         if( b_flush )
1880         {
1881             block_t *p_null = DecoderBlockFlushNew();
1882             if( p_null )
1883                 DecoderDecodeVideo( p_dec, p_null );
1884         }
1885     }
1886     else if( p_block )
1887     {
1888         DecoderDecodeVideo( p_dec, p_block );
1889     }
1890
1891     if( b_flush && p_owner->p_vout )
1892         vout_Flush( p_owner->p_vout, VLC_TS_INVALID+1 );
1893 }
1894
1895 /* This function process a audio block
1896  */
1897 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1898 {
1899     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1900
1901     if( p_owner->p_packetizer )
1902     {
1903         block_t *p_packetized_block;
1904         decoder_t *p_packetizer = p_owner->p_packetizer;
1905
1906         while( (p_packetized_block =
1907                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1908         {
1909             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1910             {
1911                 es_format_Clean( &p_dec->fmt_in );
1912                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1913             }
1914
1915             while( p_packetized_block )
1916             {
1917                 block_t *p_next = p_packetized_block->p_next;
1918                 p_packetized_block->p_next = NULL;
1919
1920                 DecoderDecodeAudio( p_dec, p_packetized_block );
1921
1922                 p_packetized_block = p_next;
1923             }
1924         }
1925         /* The packetizer does not output a block that tell the decoder to flush
1926          * do it ourself */
1927         if( b_flush )
1928         {
1929             block_t *p_null = DecoderBlockFlushNew();
1930             if( p_null )
1931                 DecoderDecodeAudio( p_dec, p_null );
1932         }
1933     }
1934     else if( p_block )
1935     {
1936         DecoderDecodeAudio( p_dec, p_block );
1937     }
1938
1939     if( b_flush && p_owner->p_aout )
1940         aout_DecFlush( p_owner->p_aout );
1941 }
1942
1943 /* This function process a subtitle block
1944  */
1945 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1946 {
1947     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1948     const bool b_telx = p_dec->fmt_in.i_codec == VLC_CODEC_TELETEXT;
1949
1950     input_thread_t *p_input = p_owner->p_input;
1951     vout_thread_t *p_vout;
1952     subpicture_t *p_spu;
1953
1954     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1955     {
1956         if( p_input != NULL )
1957         {
1958             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1959             stats_UpdateInteger( p_input->p->counters.p_decoded_sub, 1, NULL );
1960             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1961         }
1962
1963         p_vout = input_resource_HoldVout( p_owner->p_resource );
1964         if( p_vout && p_owner->p_spu_vout == p_vout )
1965         {
1966             /* Preroll does not work very well with subtitle */
1967             if( p_spu->i_start > VLC_TS_INVALID &&
1968                 p_spu->i_start < p_owner->i_preroll_end &&
1969                 ( p_spu->i_stop <= VLC_TS_INVALID || p_spu->i_stop < p_owner->i_preroll_end ) )
1970             {
1971                 subpicture_Delete( p_spu );
1972             }
1973             else
1974             {
1975                 DecoderPlaySpu( p_dec, p_spu, b_telx );
1976             }
1977         }
1978         else
1979         {
1980             subpicture_Delete( p_spu );
1981         }
1982         if( p_vout )
1983             vlc_object_release( p_vout );
1984     }
1985
1986     if( b_flush && p_owner->p_spu_vout )
1987     {
1988         p_vout = input_resource_HoldVout( p_owner->p_resource );
1989
1990         if( p_vout && p_owner->p_spu_vout == p_vout )
1991             vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1992
1993         if( p_vout )
1994             vlc_object_release( p_vout );
1995     }
1996 }
1997
1998 /* */
1999 static void DecoderProcessOnFlush( decoder_t *p_dec )
2000 {
2001     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2002
2003     vlc_mutex_lock( &p_owner->lock );
2004     DecoderFlushBuffering( p_dec );
2005
2006     if( p_owner->b_flushing )
2007     {
2008         p_owner->b_flushing = false;
2009         vlc_cond_signal( &p_owner->wait_acknowledge );
2010     }
2011     vlc_mutex_unlock( &p_owner->lock );
2012 }
2013
2014 /**
2015  * Decode a block
2016  *
2017  * \param p_dec the decoder object
2018  * \param p_block the block to decode
2019  * \return VLC_SUCCESS or an error code
2020  */
2021 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
2022 {
2023     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
2024     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
2025
2026     if( p_block && p_block->i_buffer <= 0 )
2027     {
2028         assert( !b_flush_request );
2029         block_Release( p_block );
2030         return;
2031     }
2032
2033 #ifdef ENABLE_SOUT
2034     if( p_owner->b_packetizer )
2035     {
2036         if( p_block )
2037             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
2038
2039         DecoderProcessSout( p_dec, p_block );
2040     }
2041     else
2042 #endif
2043     {
2044         bool b_flush = false;
2045
2046         if( p_block )
2047         {
2048             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
2049             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
2050
2051             b_flush = !b_flushing && b_flush_request;
2052
2053             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
2054         }
2055
2056         if( p_dec->fmt_out.i_cat == AUDIO_ES )
2057         {
2058             DecoderProcessAudio( p_dec, p_block, b_flush );
2059         }
2060         else if( p_dec->fmt_out.i_cat == VIDEO_ES )
2061         {
2062             DecoderProcessVideo( p_dec, p_block, b_flush );
2063         }
2064         else if( p_dec->fmt_out.i_cat == SPU_ES )
2065         {
2066             DecoderProcessSpu( p_dec, p_block, b_flush );
2067         }
2068         else
2069         {
2070             msg_Err( p_dec, "unknown ES format" );
2071             p_dec->b_error = true;
2072         }
2073     }
2074
2075     /* */
2076     if( b_flush_request )
2077         DecoderProcessOnFlush( p_dec );
2078 }
2079
2080 static void DecoderError( decoder_t *p_dec, block_t *p_block )
2081 {
2082     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
2083
2084     /* */
2085     if( p_block )
2086         block_Release( p_block );
2087
2088     if( b_flush_request )
2089         DecoderProcessOnFlush( p_dec );
2090 }
2091
2092
2093 /**
2094  * Destroys a decoder object
2095  *
2096  * \param p_dec the decoder object
2097  * \return nothing
2098  */
2099 static void DeleteDecoder( decoder_t * p_dec )
2100 {
2101     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2102
2103     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2104              (char*)&p_dec->fmt_in.i_codec,
2105              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2106
2107     /* Free all packets still in the decoder fifo. */
2108     block_FifoEmpty( p_owner->p_fifo );
2109     block_FifoRelease( p_owner->p_fifo );
2110
2111     /* */
2112     vlc_mutex_lock( &p_owner->lock );
2113     DecoderFlushBuffering( p_dec );
2114     vlc_mutex_unlock( &p_owner->lock );
2115
2116     /* Cleanup */
2117     if( p_owner->p_aout )
2118     {
2119         /* TODO: REVISIT gap-less audio */
2120         aout_DecFlush( p_owner->p_aout );
2121         aout_DecDelete( p_owner->p_aout );
2122         input_resource_RequestAout( p_owner->p_resource, p_owner->p_aout );
2123         if( p_owner->p_input != NULL )
2124             input_SendEventAout( p_owner->p_input );
2125     }
2126     if( p_owner->p_vout )
2127     {
2128         /* Hack to make sure all the the pictures are freed by the decoder
2129          * and that the vout is not paused anymore */
2130         vout_Reset( p_owner->p_vout );
2131
2132         /* */
2133         input_resource_RequestVout( p_owner->p_resource, p_owner->p_vout, NULL,
2134                                     0, true );
2135         if( p_owner->p_input != NULL )
2136             input_SendEventVout( p_owner->p_input );
2137     }
2138
2139 #ifdef ENABLE_SOUT
2140     if( p_owner->p_sout_input )
2141     {
2142         sout_InputDelete( p_owner->p_sout_input );
2143         es_format_Clean( &p_owner->sout );
2144     }
2145 #endif
2146
2147     if( p_dec->fmt_out.i_cat == SPU_ES )
2148     {
2149         vout_thread_t *p_vout;
2150
2151         p_vout = input_resource_HoldVout( p_owner->p_resource );
2152         if( p_vout )
2153         {
2154             if( p_owner->p_spu_vout == p_vout )
2155                 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
2156             vlc_object_release( p_vout );
2157         }
2158     }
2159
2160     es_format_Clean( &p_dec->fmt_in );
2161     es_format_Clean( &p_dec->fmt_out );
2162     if( p_dec->p_description )
2163         vlc_meta_Delete( p_dec->p_description );
2164     es_format_Clean( &p_owner->fmt_description );
2165     if( p_owner->p_description )
2166         vlc_meta_Delete( p_owner->p_description );
2167
2168     if( p_owner->p_packetizer )
2169     {
2170         module_unneed( p_owner->p_packetizer,
2171                        p_owner->p_packetizer->p_module );
2172         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2173         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2174         if( p_owner->p_packetizer->p_description )
2175             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2176         vlc_object_release( p_owner->p_packetizer );
2177     }
2178
2179     vlc_cond_destroy( &p_owner->wait_acknowledge );
2180     vlc_cond_destroy( &p_owner->wait_request );
2181     vlc_mutex_destroy( &p_owner->lock );
2182
2183     vlc_object_release( p_dec );
2184
2185     free( p_owner );
2186 }
2187
2188 /*****************************************************************************
2189  * Buffers allocation callbacks for the decoders
2190  *****************************************************************************/
2191 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2192 {
2193     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2194
2195     vlc_assert_locked( &p_owner->lock );
2196
2197     p_owner->b_fmt_description = true;
2198
2199     /* Copy es_format */
2200     es_format_Clean( &p_owner->fmt_description );
2201     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2202
2203     /* Move p_description */
2204     if( p_owner->p_description && p_dec->p_description )
2205         vlc_meta_Delete( p_owner->p_description );
2206     p_owner->p_description = p_dec->p_description;
2207     p_dec->p_description = NULL;
2208 }
2209 static vout_thread_t *aout_request_vout( void *p_private,
2210                                          vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
2211 {
2212     decoder_t *p_dec = p_private;
2213     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2214     input_thread_t *p_input = p_owner->p_input;
2215
2216     p_vout = input_resource_RequestVout( p_owner->p_resource, p_vout, p_fmt, 1,
2217                                          b_recyle );
2218     if( p_input != NULL )
2219         input_SendEventVout( p_input );
2220
2221     return p_vout;
2222 }
2223
2224 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2225 {
2226     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2227     aout_buffer_t *p_buffer;
2228
2229     if( p_owner->p_aout &&
2230         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
2231           p_dec->fmt_out.audio.i_original_channels !=
2232               p_owner->audio.i_original_channels ||
2233           p_dec->fmt_out.audio.i_bytes_per_frame !=
2234               p_owner->audio.i_bytes_per_frame ) )
2235     {
2236         audio_output_t *p_aout = p_owner->p_aout;
2237
2238         /* Parameters changed, restart the aout */
2239         vlc_mutex_lock( &p_owner->lock );
2240
2241         DecoderFlushBuffering( p_dec );
2242
2243         aout_DecDelete( p_owner->p_aout );
2244         p_owner->p_aout = NULL;
2245
2246         vlc_mutex_unlock( &p_owner->lock );
2247         input_resource_RequestAout( p_owner->p_resource, p_aout );
2248     }
2249
2250     if( p_owner->p_aout == NULL )
2251     {
2252         const int i_force_dolby = var_InheritInteger( p_dec, "force-dolby-surround" );
2253         audio_sample_format_t format;
2254         audio_output_t *p_aout;
2255         aout_request_vout_t request_vout;
2256
2257         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2258         p_owner->audio = p_dec->fmt_out.audio;
2259
2260         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2261         if( i_force_dolby &&
2262             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2263                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2264         {
2265             if( i_force_dolby == 1 )
2266             {
2267                 format.i_original_channels = format.i_original_channels |
2268                                              AOUT_CHAN_DOLBYSTEREO;
2269             }
2270             else /* i_force_dolby == 2 */
2271             {
2272                 format.i_original_channels = format.i_original_channels &
2273                                              ~AOUT_CHAN_DOLBYSTEREO;
2274             }
2275         }
2276
2277         request_vout.pf_request_vout = aout_request_vout;
2278         request_vout.p_private = p_dec;
2279
2280         assert( p_owner->p_aout == NULL );
2281         p_aout = input_resource_RequestAout( p_owner->p_resource, NULL );
2282         if( p_aout )
2283         {
2284             aout_FormatPrepare( &format );
2285             if( aout_DecNew( p_aout, &format,
2286                              &p_dec->fmt_out.audio_replay_gain,
2287                              &request_vout ) )
2288             {
2289                 input_resource_RequestAout( p_owner->p_resource, p_aout );
2290                 p_aout = NULL;
2291             }
2292         }
2293
2294         vlc_mutex_lock( &p_owner->lock );
2295
2296         p_owner->p_aout = p_aout;
2297         DecoderUpdateFormatLocked( p_dec );
2298
2299         vlc_mutex_unlock( &p_owner->lock );
2300
2301         if( p_owner->p_input != NULL )
2302             input_SendEventAout( p_owner->p_input );
2303
2304         if( p_aout == NULL )
2305         {
2306             msg_Err( p_dec, "failed to create audio output" );
2307             p_dec->b_error = true;
2308             return NULL;
2309         }
2310         p_dec->fmt_out.audio.i_bytes_per_frame =
2311             p_owner->audio.i_bytes_per_frame;
2312     }
2313
2314     p_buffer = aout_DecNewBuffer( p_owner->p_aout, i_samples );
2315
2316     return p_buffer;
2317 }
2318
2319 static picture_t *vout_new_buffer( decoder_t *p_dec )
2320 {
2321     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2322
2323     if( p_owner->p_vout == NULL ||
2324         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2325         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2326         p_dec->fmt_out.video.i_visible_width != p_owner->video.i_visible_width ||
2327         p_dec->fmt_out.video.i_visible_height != p_owner->video.i_visible_height ||
2328         p_dec->fmt_out.video.i_x_offset != p_owner->video.i_x_offset  ||
2329         p_dec->fmt_out.video.i_y_offset != p_owner->video.i_y_offset  ||
2330         p_dec->fmt_out.i_codec != p_owner->video.i_chroma ||
2331         (int64_t)p_dec->fmt_out.video.i_sar_num * p_owner->video.i_sar_den !=
2332         (int64_t)p_dec->fmt_out.video.i_sar_den * p_owner->video.i_sar_num )
2333     {
2334         vout_thread_t *p_vout;
2335
2336         if( !p_dec->fmt_out.video.i_width ||
2337             !p_dec->fmt_out.video.i_height )
2338         {
2339             /* Can't create a new vout without display size */
2340             return NULL;
2341         }
2342
2343         video_format_t fmt = p_dec->fmt_out.video;
2344         fmt.i_chroma = p_dec->fmt_out.i_codec;
2345         p_owner->video = fmt;
2346
2347         if( vlc_fourcc_IsYUV( fmt.i_chroma ) )
2348         {
2349             const vlc_chroma_description_t *dsc = vlc_fourcc_GetChromaDescription( fmt.i_chroma );
2350             for( int i = 0; dsc && i < dsc->plane_count; i++ )
2351             {
2352                 while( fmt.i_width % dsc->p[i].w.den )
2353                     fmt.i_width++;
2354                 while( fmt.i_height % dsc->p[i].h.den )
2355                     fmt.i_height++;
2356             }
2357         }
2358
2359         if( !fmt.i_visible_width || !fmt.i_visible_height )
2360         {
2361             if( p_dec->fmt_in.video.i_visible_width &&
2362                 p_dec->fmt_in.video.i_visible_height )
2363             {
2364                 fmt.i_visible_width  = p_dec->fmt_in.video.i_visible_width;
2365                 fmt.i_visible_height = p_dec->fmt_in.video.i_visible_height;
2366                 fmt.i_x_offset       = p_dec->fmt_in.video.i_x_offset;
2367                 fmt.i_y_offset       = p_dec->fmt_in.video.i_y_offset;
2368             }
2369             else
2370             {
2371                 fmt.i_visible_width  = fmt.i_width;
2372                 fmt.i_visible_height = fmt.i_height;
2373                 fmt.i_x_offset       = 0;
2374                 fmt.i_y_offset       = 0;
2375             }
2376         }
2377
2378         if( fmt.i_visible_height == 1088 &&
2379             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2380         {
2381             fmt.i_visible_height = 1080;
2382             if( !(fmt.i_sar_num % 136))
2383             {
2384                 fmt.i_sar_num *= 135;
2385                 fmt.i_sar_den *= 136;
2386             }
2387             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2388         }
2389
2390         if( !fmt.i_sar_num || !fmt.i_sar_den )
2391         {
2392             fmt.i_sar_num = 1;
2393             fmt.i_sar_den = 1;
2394         }
2395
2396         vlc_ureduce( &fmt.i_sar_num, &fmt.i_sar_den,
2397                      fmt.i_sar_num, fmt.i_sar_den, 50000 );
2398
2399         vlc_mutex_lock( &p_owner->lock );
2400
2401         DecoderFlushBuffering( p_dec );
2402
2403         p_vout = p_owner->p_vout;
2404         p_owner->p_vout = NULL;
2405         vlc_mutex_unlock( &p_owner->lock );
2406
2407         unsigned dpb_size;
2408         switch( p_dec->fmt_in.i_codec )
2409         {
2410         case VLC_CODEC_H264:
2411         case VLC_CODEC_DIRAC: /* FIXME valid ? */
2412             dpb_size = 18;
2413             break;
2414         case VLC_CODEC_VP5:
2415         case VLC_CODEC_VP6:
2416         case VLC_CODEC_VP6F:
2417         case VLC_CODEC_VP8:
2418             dpb_size = 3;
2419             break;
2420         default:
2421             dpb_size = 2;
2422             break;
2423         }
2424         p_vout = input_resource_RequestVout( p_owner->p_resource,
2425                                              p_vout, &fmt,
2426                                              dpb_size + 1 + DECODER_MAX_BUFFERING_COUNT,
2427                                              true );
2428         vlc_mutex_lock( &p_owner->lock );
2429         p_owner->p_vout = p_vout;
2430
2431         DecoderUpdateFormatLocked( p_dec );
2432
2433         vlc_mutex_unlock( &p_owner->lock );
2434
2435         if( p_owner->p_input != NULL )
2436             input_SendEventVout( p_owner->p_input );
2437         if( p_vout == NULL )
2438         {
2439             msg_Err( p_dec, "failed to create video output" );
2440             p_dec->b_error = true;
2441             return NULL;
2442         }
2443     }
2444
2445     /* Get a new picture
2446      */
2447     for( ;; )
2448     {
2449         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2450             return NULL;
2451
2452         picture_t *p_picture = vout_GetPicture( p_owner->p_vout );
2453         if( p_picture )
2454             return p_picture;
2455
2456         if( DecoderIsFlushing( p_dec ) )
2457             return NULL;
2458
2459         /* */
2460         DecoderSignalBuffering( p_dec, true );
2461
2462         /* Check the decoder doesn't leak pictures */
2463         vout_FixLeaks( p_owner->p_vout );
2464
2465         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2466         msleep( VOUT_OUTMEM_SLEEP );
2467     }
2468 }
2469
2470 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2471 {
2472     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2473 }
2474
2475 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2476 {
2477     vout_HoldPicture( p_dec->p_owner->p_vout, p_pic );
2478 }
2479
2480 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2481 {
2482     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2483 }
2484
2485 static subpicture_t *spu_new_buffer( decoder_t *p_dec,
2486                                      const subpicture_updater_t *p_updater )
2487 {
2488     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2489     vout_thread_t *p_vout = NULL;
2490     subpicture_t *p_subpic;
2491     int i_attempts = 30;
2492
2493     while( i_attempts-- )
2494     {
2495         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2496             break;
2497
2498         p_vout = input_resource_HoldVout( p_owner->p_resource );
2499         if( p_vout )
2500             break;
2501
2502         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2503     }
2504
2505     if( !p_vout )
2506     {
2507         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2508         return NULL;
2509     }
2510
2511     if( p_owner->p_spu_vout != p_vout )
2512     {
2513         vlc_mutex_lock( &p_owner->lock );
2514
2515         DecoderFlushBuffering( p_dec );
2516
2517         vlc_mutex_unlock( &p_owner->lock );
2518
2519         p_owner->i_spu_channel = vout_RegisterSubpictureChannel( p_vout );
2520         p_owner->i_spu_order = 0;
2521         p_owner->p_spu_vout = p_vout;
2522     }
2523
2524     p_subpic = subpicture_New( p_updater );
2525     if( p_subpic )
2526     {
2527         p_subpic->i_channel = p_owner->i_spu_channel;
2528         p_subpic->i_order = p_owner->i_spu_order++;
2529         p_subpic->b_subtitle = true;
2530     }
2531
2532     vlc_object_release( p_vout );
2533
2534     return p_subpic;
2535 }
2536
2537 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2538 {
2539     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2540     vout_thread_t *p_vout = NULL;
2541
2542     p_vout = input_resource_HoldVout( p_owner->p_resource );
2543     if( !p_vout || p_owner->p_spu_vout != p_vout )
2544     {
2545         if( p_vout )
2546             vlc_object_release( p_vout );
2547         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2548         return;
2549     }
2550
2551     subpicture_Delete( p_subpic );
2552
2553     vlc_object_release( p_vout );
2554 }
2555