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     for( ;; )
1021     {
1022         if( p_owner->b_flushing )
1023             break;
1024         if( p_owner->b_paused )
1025         {
1026             if( p_owner->b_buffering && !p_owner->buffer.b_full )
1027                 break;
1028             if( p_owner->pause.i_ignore > 0 )
1029             {
1030                 p_owner->pause.i_ignore--;
1031                 break;
1032             }
1033         }
1034         else
1035         {
1036             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
1037                 break;
1038         }
1039         vlc_cond_wait( &p_owner->wait_request, &p_owner->lock );
1040     }
1041
1042     if( pb_reject )
1043         *pb_reject = p_owner->b_flushing;
1044 }
1045
1046 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
1047 {
1048     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1049
1050     vlc_assert_locked( &p_owner->lock );
1051
1052     /* XXX only audio and video output have to be paused.
1053      * - for sout it is useless
1054      * - for subs, it is done by the vout
1055      */
1056     if( p_dec->fmt_out.i_cat == AUDIO_ES )
1057     {
1058         if( p_owner->p_aout )
1059             aout_DecChangePause( p_owner->p_aout, b_paused, i_date );
1060     }
1061     else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1062     {
1063         if( p_owner->p_vout )
1064             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1065     }
1066 }
1067 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1068 {
1069     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1070         *pi_preroll = INT64_MAX;
1071     else if( p->i_dts > VLC_TS_INVALID )
1072         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1073     else if( p->i_pts > VLC_TS_INVALID )
1074         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1075 }
1076
1077 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1078                           mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound )
1079 {
1080     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1081     input_clock_t   *p_clock = p_owner->p_clock;
1082
1083     vlc_assert_locked( &p_owner->lock );
1084
1085     const mtime_t i_es_delay = p_owner->i_ts_delay;
1086
1087     if( !p_clock )
1088         return;
1089
1090     const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1091     int i_rate;
1092
1093     if( *pi_ts0 > VLC_TS_INVALID )
1094     {
1095         *pi_ts0 += i_es_delay;
1096         if( pi_ts1 && *pi_ts1 > VLC_TS_INVALID )
1097             *pi_ts1 += i_es_delay;
1098         if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) )
1099             *pi_ts0 = VLC_TS_INVALID;
1100     }
1101     else
1102     {
1103         i_rate = input_clock_GetRate( p_clock );
1104     }
1105
1106     /* Do not create ephemere data because of rounding errors */
1107     if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1108         *pi_ts1 += 1;
1109
1110     if( pi_duration )
1111         *pi_duration = ( *pi_duration * i_rate + INPUT_RATE_DEFAULT-1 )
1112             / INPUT_RATE_DEFAULT;
1113
1114     if( pi_rate )
1115         *pi_rate = i_rate;
1116 }
1117
1118 static bool DecoderIsExitRequested( decoder_t *p_dec )
1119 {
1120     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1121
1122     vlc_mutex_lock( &p_owner->lock );
1123     bool b_exit = p_owner->b_exit;
1124     vlc_mutex_unlock( &p_owner->lock );
1125
1126     return b_exit;
1127 }
1128
1129 /**
1130  * If *pb_reject, it does nothing, otherwise it waits for the given
1131  * deadline or a flush request (in which case it set *pi_reject to true.
1132  */
1133 static void DecoderWaitDate( decoder_t *p_dec,
1134                              bool *pb_reject, mtime_t i_deadline )
1135 {
1136     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1137
1138     if( *pb_reject || i_deadline < 0 )
1139         return;
1140
1141     for( ;; )
1142     {
1143         vlc_mutex_lock( &p_owner->lock );
1144         if( p_owner->b_flushing || p_owner->b_exit )
1145         {
1146             *pb_reject = true;
1147             vlc_mutex_unlock( &p_owner->lock );
1148             break;
1149         }
1150         int i_ret = vlc_cond_timedwait( &p_owner->wait_request, &p_owner->lock,
1151                                         i_deadline );
1152         vlc_mutex_unlock( &p_owner->lock );
1153         if( i_ret )
1154             break;
1155     }
1156 }
1157
1158 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1159                               int *pi_played_sum, int *pi_lost_sum )
1160 {
1161     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1162     audio_output_t *p_aout = p_owner->p_aout;
1163
1164     /* */
1165     if( p_audio->i_pts <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify audio_output/*
1166     {
1167         msg_Warn( p_dec, "non-dated audio buffer received" );
1168         *pi_lost_sum += 1;
1169         aout_BufferFree( p_audio );
1170         return;
1171     }
1172
1173     /* */
1174     vlc_mutex_lock( &p_owner->lock );
1175
1176     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1177     {
1178         p_audio->p_next = NULL;
1179
1180         *p_owner->buffer.pp_audio_next = p_audio;
1181         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1182
1183         p_owner->buffer.i_count++;
1184         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1185             p_audio->i_pts - p_owner->buffer.p_audio->i_pts > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1186         {
1187             p_owner->buffer.b_full = true;
1188             vlc_cond_signal( &p_owner->wait_acknowledge );
1189         }
1190     }
1191
1192     for( ;; )
1193     {
1194         bool b_has_more = false;
1195         bool b_reject;
1196         DecoderWaitUnblock( p_dec, &b_reject );
1197
1198         if( p_owner->b_buffering )
1199         {
1200             vlc_mutex_unlock( &p_owner->lock );
1201             return;
1202         }
1203
1204         /* */
1205         if( p_owner->buffer.p_audio )
1206         {
1207             p_audio = p_owner->buffer.p_audio;
1208
1209             p_owner->buffer.p_audio = p_audio->p_next;
1210             p_owner->buffer.i_count--;
1211
1212             b_has_more = p_owner->buffer.p_audio != NULL;
1213             if( !b_has_more )
1214                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1215         }
1216
1217         /* */
1218         const bool b_dated = p_audio->i_pts > VLC_TS_INVALID;
1219         int i_rate = INPUT_RATE_DEFAULT;
1220
1221         DecoderFixTs( p_dec, &p_audio->i_pts, NULL, &p_audio->i_length,
1222                       &i_rate, AOUT_MAX_ADVANCE_TIME );
1223
1224         vlc_mutex_unlock( &p_owner->lock );
1225
1226         if( !p_aout ||
1227             p_audio->i_pts <= VLC_TS_INVALID ||
1228             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1229             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1230             b_reject = true;
1231
1232         DecoderWaitDate( p_dec, &b_reject,
1233                          p_audio->i_pts - AOUT_MAX_PREPARE_TIME );
1234
1235         if( !b_reject )
1236         {
1237             if( !aout_DecPlay( p_aout, p_audio, i_rate ) )
1238                 *pi_played_sum += 1;
1239             *pi_lost_sum += aout_DecGetResetLost( p_aout );
1240         }
1241         else
1242         {
1243             if( b_dated )
1244                 msg_Warn( p_dec, "received buffer in the future" );
1245             else
1246                 msg_Warn( p_dec, "non-dated audio buffer received" );
1247
1248             *pi_lost_sum += 1;
1249             aout_BufferFree( p_audio );
1250         }
1251
1252         if( !b_has_more )
1253             break;
1254
1255         vlc_mutex_lock( &p_owner->lock );
1256         if( !p_owner->buffer.p_audio )
1257         {
1258             vlc_mutex_unlock( &p_owner->lock );
1259             break;
1260         }
1261     }
1262 }
1263
1264 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1265 {
1266     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1267     aout_buffer_t   *p_aout_buf;
1268     int i_decoded = 0;
1269     int i_lost = 0;
1270     int i_played = 0;
1271
1272     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1273     {
1274         audio_output_t *p_aout = p_owner->p_aout;
1275
1276         if( DecoderIsExitRequested( p_dec ) )
1277         {
1278             /* It prevent freezing VLC in case of broken decoder */
1279             aout_DecDeleteBuffer( p_aout, p_aout_buf );
1280             if( p_block )
1281                 block_Release( p_block );
1282             break;
1283         }
1284         i_decoded++;
1285
1286         if( p_owner->i_preroll_end > VLC_TS_INVALID &&
1287             p_aout_buf->i_pts < p_owner->i_preroll_end )
1288         {
1289             aout_DecDeleteBuffer( p_aout, p_aout_buf );
1290             continue;
1291         }
1292
1293         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1294         {
1295             msg_Dbg( p_dec, "End of audio preroll" );
1296             if( p_owner->p_aout )
1297                 aout_DecFlush( p_owner->p_aout );
1298             /* */
1299             p_owner->i_preroll_end = VLC_TS_INVALID;
1300         }
1301
1302         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1303     }
1304
1305     /* Update ugly stat */
1306     input_thread_t  *p_input = p_owner->p_input;
1307
1308     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_played > 0) )
1309     {
1310         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1311         stats_Update( p_input->p->counters.p_lost_abuffers, i_lost, NULL );
1312         stats_Update( p_input->p->counters.p_played_abuffers, i_played, NULL );
1313         stats_Update( p_input->p->counters.p_decoded_audio, i_decoded, NULL );
1314         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1315     }
1316 }
1317 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1318 {
1319     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1320     block_t *p_cc;
1321     bool pb_present[4];
1322     bool b_processed = false;
1323     int i;
1324     int i_cc_decoder;
1325
1326     assert( p_dec_cc->pf_get_cc != NULL );
1327
1328     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1329     if( !p_owner->cc.b_supported )
1330         return;
1331
1332     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1333     if( !p_cc )
1334         return;
1335
1336     vlc_mutex_lock( &p_owner->lock );
1337     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1338     {
1339         p_owner->cc.pb_present[i] |= pb_present[i];
1340         if( p_owner->cc.pp_decoder[i] )
1341             i_cc_decoder++;
1342     }
1343
1344     for( i = 0; i < 4; i++ )
1345     {
1346         if( !p_owner->cc.pp_decoder[i] )
1347             continue;
1348
1349         if( i_cc_decoder > 1 )
1350             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1351         else
1352             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1353         i_cc_decoder--;
1354         b_processed = true;
1355     }
1356     vlc_mutex_unlock( &p_owner->lock );
1357
1358     if( !b_processed )
1359         block_Release( p_cc );
1360 }
1361
1362 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1363                               int *pi_played_sum, int *pi_lost_sum )
1364 {
1365     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1366     vout_thread_t  *p_vout = p_owner->p_vout;
1367     bool b_first_buffered;
1368
1369     if( p_picture->date <= VLC_TS_INVALID )
1370     {
1371         msg_Warn( p_dec, "non-dated video buffer received" );
1372         *pi_lost_sum += 1;
1373         vout_ReleasePicture( p_vout, p_picture );
1374         return;
1375     }
1376
1377     /* */
1378     vlc_mutex_lock( &p_owner->lock );
1379
1380     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1381     {
1382         p_picture->p_next = NULL;
1383
1384         *p_owner->buffer.pp_picture_next = p_picture;
1385         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1386
1387         p_owner->buffer.i_count++;
1388         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1389             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1390         {
1391             p_owner->buffer.b_full = true;
1392             vlc_cond_signal( &p_owner->wait_acknowledge );
1393         }
1394     }
1395     b_first_buffered = p_owner->buffer.p_picture != NULL;
1396
1397     for( ;; b_first_buffered = false )
1398     {
1399         bool b_has_more = false;
1400
1401         bool b_reject;
1402
1403         DecoderWaitUnblock( p_dec, &b_reject );
1404
1405         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1406         {
1407             vlc_mutex_unlock( &p_owner->lock );
1408             return;
1409         }
1410         bool b_buffering_first = p_owner->b_buffering;
1411
1412         /* */
1413         if( p_owner->buffer.p_picture )
1414         {
1415             p_picture = p_owner->buffer.p_picture;
1416
1417             p_owner->buffer.p_picture = p_picture->p_next;
1418             p_owner->buffer.i_count--;
1419
1420             b_has_more = p_owner->buffer.p_picture != NULL;
1421             if( !b_has_more )
1422                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1423         }
1424
1425         /* */
1426         if( b_buffering_first )
1427         {
1428             assert( p_owner->buffer.b_first );
1429             assert( !p_owner->buffer.i_count );
1430             msg_Dbg( p_dec, "Received first picture" );
1431             p_owner->buffer.b_first = false;
1432             p_picture->b_force = true;
1433         }
1434
1435         const bool b_dated = p_picture->date > VLC_TS_INVALID;
1436         int i_rate = INPUT_RATE_DEFAULT;
1437         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1438                       &i_rate, DECODER_BOGUS_VIDEO_DELAY );
1439
1440         vlc_mutex_unlock( &p_owner->lock );
1441
1442         /* */
1443         if( !p_picture->b_force && p_picture->date <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify video_output/*
1444             b_reject = true;
1445
1446         if( !b_reject )
1447         {
1448             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1449             {
1450                 /* Be sure to not display old picture after our own */
1451                 vout_Flush( p_vout, p_picture->date );
1452                 p_owner->i_last_rate = i_rate;
1453             }
1454             vout_PutPicture( p_vout, p_picture );
1455         }
1456         else
1457         {
1458             if( b_dated )
1459                 msg_Warn( p_dec, "early picture skipped" );
1460             else
1461                 msg_Warn( p_dec, "non-dated video buffer received" );
1462
1463             *pi_lost_sum += 1;
1464             vout_ReleasePicture( p_vout, p_picture );
1465         }
1466         int i_tmp_display;
1467         int i_tmp_lost;
1468         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1469
1470         *pi_played_sum += i_tmp_display;
1471         *pi_lost_sum += i_tmp_lost;
1472
1473         if( !b_has_more || b_buffering_first )
1474             break;
1475
1476         vlc_mutex_lock( &p_owner->lock );
1477         if( !p_owner->buffer.p_picture )
1478         {
1479             vlc_mutex_unlock( &p_owner->lock );
1480             break;
1481         }
1482     }
1483 }
1484
1485 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1486 {
1487     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1488     picture_t      *p_pic;
1489     int i_lost = 0;
1490     int i_decoded = 0;
1491     int i_displayed = 0;
1492
1493     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1494     {
1495         vout_thread_t  *p_vout = p_owner->p_vout;
1496         if( DecoderIsExitRequested( p_dec ) )
1497         {
1498             /* It prevent freezing VLC in case of broken decoder */
1499             vout_ReleasePicture( p_vout, p_pic );
1500             if( p_block )
1501                 block_Release( p_block );
1502             break;
1503         }
1504
1505         i_decoded++;
1506
1507         if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
1508         {
1509             vout_ReleasePicture( p_vout, p_pic );
1510             continue;
1511         }
1512
1513         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1514         {
1515             msg_Dbg( p_dec, "End of video preroll" );
1516             if( p_vout )
1517                 vout_Flush( p_vout, VLC_TS_INVALID+1 );
1518             /* */
1519             p_owner->i_preroll_end = VLC_TS_INVALID;
1520         }
1521
1522         if( p_dec->pf_get_cc &&
1523             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1524             DecoderGetCc( p_dec, p_dec );
1525
1526         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1527     }
1528
1529     /* Update ugly stat */
1530     input_thread_t *p_input = p_owner->p_input;
1531
1532     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
1533     {
1534         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1535         stats_Update( p_input->p->counters.p_decoded_video, i_decoded, NULL );
1536         stats_Update( p_input->p->counters.p_lost_pictures, i_lost , NULL);
1537         stats_Update( p_input->p->counters.p_displayed_pictures,
1538                       i_displayed, NULL);
1539         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1540     }
1541 }
1542
1543 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic )
1544 {
1545     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1546     vout_thread_t *p_vout = p_owner->p_spu_vout;
1547
1548     /* */
1549     if( p_subpic->i_start <= VLC_TS_INVALID )
1550     {
1551         msg_Warn( p_dec, "non-dated spu buffer received" );
1552         subpicture_Delete( p_subpic );
1553         return;
1554     }
1555
1556     /* */
1557     vlc_mutex_lock( &p_owner->lock );
1558
1559     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1560     {
1561         p_subpic->p_next = NULL;
1562
1563         *p_owner->buffer.pp_subpic_next = p_subpic;
1564         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1565
1566         p_owner->buffer.i_count++;
1567         /* XXX it is important to be full after the first one */
1568         if( p_owner->buffer.i_count > 0 )
1569         {
1570             p_owner->buffer.b_full = true;
1571             vlc_cond_signal( &p_owner->wait_acknowledge );
1572         }
1573     }
1574
1575     for( ;; )
1576     {
1577         bool b_has_more = false;
1578         bool b_reject;
1579         DecoderWaitUnblock( p_dec, &b_reject );
1580
1581         if( p_owner->b_buffering )
1582         {
1583             vlc_mutex_unlock( &p_owner->lock );
1584             return;
1585         }
1586
1587         /* */
1588         if( p_owner->buffer.p_subpic )
1589         {
1590             p_subpic = p_owner->buffer.p_subpic;
1591
1592             p_owner->buffer.p_subpic = p_subpic->p_next;
1593             p_owner->buffer.i_count--;
1594
1595             b_has_more = p_owner->buffer.p_subpic != NULL;
1596             if( !b_has_more )
1597                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1598         }
1599
1600         /* */
1601         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1602                       NULL, INT64_MAX );
1603
1604         vlc_mutex_unlock( &p_owner->lock );
1605
1606         if( p_subpic->i_start <= VLC_TS_INVALID )
1607             b_reject = true;
1608
1609         DecoderWaitDate( p_dec, &b_reject,
1610                          p_subpic->i_start - SPU_MAX_PREPARE_TIME );
1611
1612         if( !b_reject )
1613             vout_PutSubpicture( p_vout, p_subpic );
1614         else
1615             subpicture_Delete( p_subpic );
1616
1617         if( !b_has_more )
1618             break;
1619         vlc_mutex_lock( &p_owner->lock );
1620         if( !p_owner->buffer.p_subpic )
1621         {
1622             vlc_mutex_unlock( &p_owner->lock );
1623             break;
1624         }
1625     }
1626 }
1627
1628 #ifdef ENABLE_SOUT
1629 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block )
1630 {
1631     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1632
1633     assert( p_owner->p_clock );
1634     assert( !p_sout_block->p_next );
1635
1636     vlc_mutex_lock( &p_owner->lock );
1637
1638     if( p_owner->b_buffering || p_owner->buffer.p_block )
1639     {
1640         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1641
1642         p_owner->buffer.i_count++;
1643         /* XXX it is important to be full after the first one */
1644         if( p_owner->buffer.i_count > 0 )
1645         {
1646             p_owner->buffer.b_full = true;
1647             vlc_cond_signal( &p_owner->wait_acknowledge );
1648         }
1649     }
1650
1651     for( ;; )
1652     {
1653         bool b_has_more = false;
1654         bool b_reject;
1655         DecoderWaitUnblock( p_dec, &b_reject );
1656
1657         if( p_owner->b_buffering )
1658         {
1659             vlc_mutex_unlock( &p_owner->lock );
1660             return;
1661         }
1662
1663         /* */
1664         if( p_owner->buffer.p_block )
1665         {
1666             p_sout_block = p_owner->buffer.p_block;
1667
1668             p_owner->buffer.p_block = p_sout_block->p_next;
1669             p_owner->buffer.i_count--;
1670
1671             b_has_more = p_owner->buffer.p_block != NULL;
1672             if( !b_has_more )
1673                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1674         }
1675         p_sout_block->p_next = NULL;
1676
1677         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1678                       &p_sout_block->i_length, NULL, INT64_MAX );
1679
1680         vlc_mutex_unlock( &p_owner->lock );
1681
1682         if( !b_reject )
1683             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block ); // FIXME --VLC_TS_INVALID inspect stream_output/*
1684         else
1685             block_Release( p_sout_block );
1686
1687         if( !b_has_more )
1688             break;
1689         vlc_mutex_lock( &p_owner->lock );
1690         if( !p_owner->buffer.p_block )
1691         {
1692             vlc_mutex_unlock( &p_owner->lock );
1693             break;
1694         }
1695     }
1696 }
1697 #endif
1698
1699 /* */
1700 static void DecoderFlushBuffering( decoder_t *p_dec )
1701 {
1702     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1703
1704     vlc_assert_locked( &p_owner->lock );
1705
1706     while( p_owner->buffer.p_picture )
1707     {
1708         picture_t *p_picture = p_owner->buffer.p_picture;
1709
1710         p_owner->buffer.p_picture = p_picture->p_next;
1711         p_owner->buffer.i_count--;
1712
1713         if( p_owner->p_vout )
1714         {
1715             vout_ReleasePicture( p_owner->p_vout, p_picture );
1716         }
1717
1718         if( !p_owner->buffer.p_picture )
1719             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1720     }
1721     while( p_owner->buffer.p_audio )
1722     {
1723         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1724
1725         p_owner->buffer.p_audio = p_audio->p_next;
1726         p_owner->buffer.i_count--;
1727
1728         aout_BufferFree( p_audio );
1729
1730         if( !p_owner->buffer.p_audio )
1731             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1732     }
1733     while( p_owner->buffer.p_subpic )
1734     {
1735         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1736
1737         p_owner->buffer.p_subpic = p_subpic->p_next;
1738         p_owner->buffer.i_count--;
1739
1740         subpicture_Delete( p_subpic );
1741
1742         if( !p_owner->buffer.p_subpic )
1743             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1744     }
1745     if( p_owner->buffer.p_block )
1746     {
1747         block_ChainRelease( p_owner->buffer.p_block );
1748
1749         p_owner->buffer.i_count = 0;
1750         p_owner->buffer.p_block = NULL;
1751         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1752     }
1753 }
1754
1755 #ifdef ENABLE_SOUT
1756 /* This function process a block for sout
1757  */
1758 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1759 {
1760     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1761     block_t *p_sout_block;
1762
1763     while( ( p_sout_block =
1764                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1765     {
1766         if( !p_owner->p_sout_input )
1767         {
1768             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1769
1770             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1771             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1772             if( p_dec->fmt_in.psz_language )
1773             {
1774                 free( p_owner->sout.psz_language );
1775                 p_owner->sout.psz_language =
1776                     strdup( p_dec->fmt_in.psz_language );
1777             }
1778
1779             p_owner->p_sout_input =
1780                 sout_InputNew( p_owner->p_sout,
1781                                &p_owner->sout );
1782
1783             if( p_owner->p_sout_input == NULL )
1784             {
1785                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1786                          (char *)&p_owner->sout.i_codec );
1787                 p_dec->b_error = true;
1788
1789                 while( p_sout_block )
1790                 {
1791                     block_t *p_next = p_sout_block->p_next;
1792                     block_Release( p_sout_block );
1793                     p_sout_block = p_next;
1794                 }
1795                 break;
1796             }
1797         }
1798
1799         while( p_sout_block )
1800         {
1801             block_t *p_next = p_sout_block->p_next;
1802
1803             p_sout_block->p_next = NULL;
1804
1805             DecoderPlaySout( p_dec, p_sout_block );
1806
1807             p_sout_block = p_next;
1808         }
1809     }
1810 }
1811 #endif
1812
1813 /* This function process a video block
1814  */
1815 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1816 {
1817     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1818
1819     if( p_owner->p_packetizer )
1820     {
1821         block_t *p_packetized_block;
1822         decoder_t *p_packetizer = p_owner->p_packetizer;
1823
1824         while( (p_packetized_block =
1825                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1826         {
1827             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1828             {
1829                 es_format_Clean( &p_dec->fmt_in );
1830                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1831             }
1832             if( p_packetizer->pf_get_cc )
1833                 DecoderGetCc( p_dec, p_packetizer );
1834
1835             while( p_packetized_block )
1836             {
1837                 block_t *p_next = p_packetized_block->p_next;
1838                 p_packetized_block->p_next = NULL;
1839
1840                 DecoderDecodeVideo( p_dec, p_packetized_block );
1841
1842                 p_packetized_block = p_next;
1843             }
1844         }
1845         /* The packetizer does not output a block that tell the decoder to flush
1846          * do it ourself */
1847         if( b_flush )
1848         {
1849             block_t *p_null = DecoderBlockFlushNew();
1850             if( p_null )
1851                 DecoderDecodeVideo( p_dec, p_null );
1852         }
1853     }
1854     else if( p_block )
1855     {
1856         DecoderDecodeVideo( p_dec, p_block );
1857     }
1858
1859     if( b_flush && p_owner->p_vout )
1860         vout_Flush( p_owner->p_vout, VLC_TS_INVALID+1 );
1861 }
1862
1863 /* This function process a audio block
1864  */
1865 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1866 {
1867     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1868
1869     if( p_owner->p_packetizer )
1870     {
1871         block_t *p_packetized_block;
1872         decoder_t *p_packetizer = p_owner->p_packetizer;
1873
1874         while( (p_packetized_block =
1875                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1876         {
1877             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1878             {
1879                 es_format_Clean( &p_dec->fmt_in );
1880                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1881             }
1882
1883             while( p_packetized_block )
1884             {
1885                 block_t *p_next = p_packetized_block->p_next;
1886                 p_packetized_block->p_next = NULL;
1887
1888                 DecoderDecodeAudio( p_dec, p_packetized_block );
1889
1890                 p_packetized_block = p_next;
1891             }
1892         }
1893         /* The packetizer does not output a block that tell the decoder to flush
1894          * do it ourself */
1895         if( b_flush )
1896         {
1897             block_t *p_null = DecoderBlockFlushNew();
1898             if( p_null )
1899                 DecoderDecodeAudio( p_dec, p_null );
1900         }
1901     }
1902     else if( p_block )
1903     {
1904         DecoderDecodeAudio( p_dec, p_block );
1905     }
1906
1907     if( b_flush && p_owner->p_aout )
1908         aout_DecFlush( p_owner->p_aout );
1909 }
1910
1911 /* This function process a subtitle block
1912  */
1913 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1914 {
1915     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1916
1917     input_thread_t *p_input = p_owner->p_input;
1918     vout_thread_t *p_vout;
1919     subpicture_t *p_spu;
1920
1921     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1922     {
1923         if( p_input != NULL )
1924         {
1925             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1926             stats_Update( p_input->p->counters.p_decoded_sub, 1, NULL );
1927             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1928         }
1929
1930         p_vout = input_resource_HoldVout( p_owner->p_resource );
1931         if( p_vout && p_owner->p_spu_vout == p_vout )
1932         {
1933             /* Preroll does not work very well with subtitle */
1934             if( p_spu->i_start > VLC_TS_INVALID &&
1935                 p_spu->i_start < p_owner->i_preroll_end &&
1936                 ( p_spu->i_stop <= VLC_TS_INVALID || p_spu->i_stop < p_owner->i_preroll_end ) )
1937             {
1938                 subpicture_Delete( p_spu );
1939             }
1940             else
1941             {
1942                 DecoderPlaySpu( p_dec, p_spu );
1943             }
1944         }
1945         else
1946         {
1947             subpicture_Delete( p_spu );
1948         }
1949         if( p_vout )
1950             vlc_object_release( p_vout );
1951     }
1952
1953     if( b_flush && p_owner->p_spu_vout )
1954     {
1955         p_vout = input_resource_HoldVout( p_owner->p_resource );
1956
1957         if( p_vout && p_owner->p_spu_vout == p_vout )
1958             vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1959
1960         if( p_vout )
1961             vlc_object_release( p_vout );
1962     }
1963 }
1964
1965 /* */
1966 static void DecoderProcessOnFlush( decoder_t *p_dec )
1967 {
1968     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1969
1970     vlc_mutex_lock( &p_owner->lock );
1971     DecoderFlushBuffering( p_dec );
1972
1973     if( p_owner->b_flushing )
1974     {
1975         p_owner->b_flushing = false;
1976         vlc_cond_signal( &p_owner->wait_acknowledge );
1977     }
1978     vlc_mutex_unlock( &p_owner->lock );
1979 }
1980
1981 /**
1982  * Decode a block
1983  *
1984  * \param p_dec the decoder object
1985  * \param p_block the block to decode
1986  * \return VLC_SUCCESS or an error code
1987  */
1988 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1989 {
1990     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1991     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1992
1993     if( p_block && p_block->i_buffer <= 0 )
1994     {
1995         assert( !b_flush_request );
1996         block_Release( p_block );
1997         return;
1998     }
1999
2000 #ifdef ENABLE_SOUT
2001     if( p_owner->b_packetizer )
2002     {
2003         if( p_block )
2004             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
2005
2006         DecoderProcessSout( p_dec, p_block );
2007     }
2008     else
2009 #endif
2010     {
2011         bool b_flush = false;
2012
2013         if( p_block )
2014         {
2015             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
2016             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
2017
2018             b_flush = !b_flushing && b_flush_request;
2019
2020             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
2021         }
2022
2023         if( p_dec->fmt_out.i_cat == AUDIO_ES )
2024         {
2025             DecoderProcessAudio( p_dec, p_block, b_flush );
2026         }
2027         else if( p_dec->fmt_out.i_cat == VIDEO_ES )
2028         {
2029             DecoderProcessVideo( p_dec, p_block, b_flush );
2030         }
2031         else if( p_dec->fmt_out.i_cat == SPU_ES )
2032         {
2033             DecoderProcessSpu( p_dec, p_block, b_flush );
2034         }
2035         else
2036         {
2037             msg_Err( p_dec, "unknown ES format" );
2038             p_dec->b_error = true;
2039         }
2040     }
2041
2042     /* */
2043     if( b_flush_request )
2044         DecoderProcessOnFlush( p_dec );
2045 }
2046
2047 static void DecoderError( decoder_t *p_dec, block_t *p_block )
2048 {
2049     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
2050
2051     /* */
2052     if( p_block )
2053         block_Release( p_block );
2054
2055     if( b_flush_request )
2056         DecoderProcessOnFlush( p_dec );
2057 }
2058
2059
2060 /**
2061  * Destroys a decoder object
2062  *
2063  * \param p_dec the decoder object
2064  * \return nothing
2065  */
2066 static void DeleteDecoder( decoder_t * p_dec )
2067 {
2068     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2069
2070     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2071              (char*)&p_dec->fmt_in.i_codec,
2072              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2073
2074     /* Free all packets still in the decoder fifo. */
2075     block_FifoEmpty( p_owner->p_fifo );
2076     block_FifoRelease( p_owner->p_fifo );
2077
2078     /* */
2079     vlc_mutex_lock( &p_owner->lock );
2080     DecoderFlushBuffering( p_dec );
2081     vlc_mutex_unlock( &p_owner->lock );
2082
2083     /* Cleanup */
2084     if( p_owner->p_aout )
2085     {
2086         /* TODO: REVISIT gap-less audio */
2087         aout_DecFlush( p_owner->p_aout );
2088         aout_DecDelete( p_owner->p_aout );
2089         input_resource_RequestAout( p_owner->p_resource, p_owner->p_aout );
2090         if( p_owner->p_input != NULL )
2091             input_SendEventAout( p_owner->p_input );
2092     }
2093     if( p_owner->p_vout )
2094     {
2095         /* Hack to make sure all the the pictures are freed by the decoder
2096          * and that the vout is not paused anymore */
2097         vout_Reset( p_owner->p_vout );
2098
2099         /* */
2100         input_resource_RequestVout( p_owner->p_resource, p_owner->p_vout, NULL,
2101                                     0, true );
2102         if( p_owner->p_input != NULL )
2103             input_SendEventVout( p_owner->p_input );
2104     }
2105
2106 #ifdef ENABLE_SOUT
2107     if( p_owner->p_sout_input )
2108     {
2109         sout_InputDelete( p_owner->p_sout_input );
2110         es_format_Clean( &p_owner->sout );
2111     }
2112 #endif
2113
2114     if( p_dec->fmt_out.i_cat == SPU_ES )
2115     {
2116         vout_thread_t *p_vout;
2117
2118         p_vout = input_resource_HoldVout( p_owner->p_resource );
2119         if( p_vout )
2120         {
2121             if( p_owner->p_spu_vout == p_vout )
2122                 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
2123             vlc_object_release( p_vout );
2124         }
2125     }
2126
2127     es_format_Clean( &p_dec->fmt_in );
2128     es_format_Clean( &p_dec->fmt_out );
2129     if( p_dec->p_description )
2130         vlc_meta_Delete( p_dec->p_description );
2131     es_format_Clean( &p_owner->fmt_description );
2132     if( p_owner->p_description )
2133         vlc_meta_Delete( p_owner->p_description );
2134
2135     if( p_owner->p_packetizer )
2136     {
2137         module_unneed( p_owner->p_packetizer,
2138                        p_owner->p_packetizer->p_module );
2139         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2140         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2141         if( p_owner->p_packetizer->p_description )
2142             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2143         vlc_object_release( p_owner->p_packetizer );
2144     }
2145
2146     vlc_cond_destroy( &p_owner->wait_acknowledge );
2147     vlc_cond_destroy( &p_owner->wait_request );
2148     vlc_mutex_destroy( &p_owner->lock );
2149
2150     vlc_object_release( p_dec );
2151
2152     free( p_owner );
2153 }
2154
2155 /*****************************************************************************
2156  * Buffers allocation callbacks for the decoders
2157  *****************************************************************************/
2158 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2159 {
2160     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2161
2162     vlc_assert_locked( &p_owner->lock );
2163
2164     p_owner->b_fmt_description = true;
2165
2166     /* Copy es_format */
2167     es_format_Clean( &p_owner->fmt_description );
2168     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2169
2170     /* Move p_description */
2171     if( p_owner->p_description && p_dec->p_description )
2172         vlc_meta_Delete( p_owner->p_description );
2173     p_owner->p_description = p_dec->p_description;
2174     p_dec->p_description = NULL;
2175 }
2176 static vout_thread_t *aout_request_vout( void *p_private,
2177                                          vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
2178 {
2179     decoder_t *p_dec = p_private;
2180     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2181     input_thread_t *p_input = p_owner->p_input;
2182
2183     p_vout = input_resource_RequestVout( p_owner->p_resource, p_vout, p_fmt, 1,
2184                                          b_recyle );
2185     if( p_input != NULL )
2186         input_SendEventVout( p_input );
2187
2188     return p_vout;
2189 }
2190
2191 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2192 {
2193     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2194     aout_buffer_t *p_buffer;
2195
2196     if( p_owner->p_aout
2197      && !AOUT_FMTS_IDENTICAL(&p_dec->fmt_out.audio, &p_owner->audio) )
2198     {
2199         audio_output_t *p_aout = p_owner->p_aout;
2200
2201         /* Parameters changed, restart the aout */
2202         vlc_mutex_lock( &p_owner->lock );
2203
2204         DecoderFlushBuffering( p_dec );
2205
2206         aout_DecDelete( p_owner->p_aout );
2207         p_owner->p_aout = NULL;
2208
2209         vlc_mutex_unlock( &p_owner->lock );
2210         input_resource_RequestAout( p_owner->p_resource, p_aout );
2211     }
2212
2213     if( p_owner->p_aout == NULL )
2214     {
2215         const int i_force_dolby = var_InheritInteger( p_dec, "force-dolby-surround" );
2216         audio_sample_format_t format;
2217         audio_output_t *p_aout;
2218         aout_request_vout_t request_vout;
2219
2220         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2221         p_owner->audio = p_dec->fmt_out.audio;
2222
2223         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2224         if( i_force_dolby &&
2225             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2226                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2227         {
2228             if( i_force_dolby == 1 )
2229             {
2230                 format.i_original_channels = format.i_original_channels |
2231                                              AOUT_CHAN_DOLBYSTEREO;
2232             }
2233             else /* i_force_dolby == 2 */
2234             {
2235                 format.i_original_channels = format.i_original_channels &
2236                                              ~AOUT_CHAN_DOLBYSTEREO;
2237             }
2238         }
2239
2240         request_vout.pf_request_vout = aout_request_vout;
2241         request_vout.p_private = p_dec;
2242
2243         assert( p_owner->p_aout == NULL );
2244         p_aout = input_resource_RequestAout( p_owner->p_resource, NULL );
2245         if( p_aout )
2246         {
2247             aout_FormatPrepare( &format );
2248             if( aout_DecNew( p_aout, &format,
2249                              &p_dec->fmt_out.audio_replay_gain,
2250                              &request_vout ) )
2251             {
2252                 input_resource_RequestAout( p_owner->p_resource, p_aout );
2253                 p_aout = NULL;
2254             }
2255         }
2256
2257         vlc_mutex_lock( &p_owner->lock );
2258
2259         p_owner->p_aout = p_aout;
2260         DecoderUpdateFormatLocked( p_dec );
2261         if( unlikely(p_owner->b_paused) ) /* fake pause if needed */
2262             aout_DecChangePause( p_aout, true, mdate() );
2263
2264         vlc_mutex_unlock( &p_owner->lock );
2265
2266         if( p_owner->p_input != NULL )
2267             input_SendEventAout( p_owner->p_input );
2268
2269         if( p_aout == NULL )
2270         {
2271             msg_Err( p_dec, "failed to create audio output" );
2272             p_dec->b_error = true;
2273             return NULL;
2274         }
2275         p_dec->fmt_out.audio.i_bytes_per_frame =
2276             p_owner->audio.i_bytes_per_frame;
2277     }
2278
2279     p_buffer = aout_DecNewBuffer( p_owner->p_aout, i_samples );
2280
2281     return p_buffer;
2282 }
2283
2284 static picture_t *vout_new_buffer( decoder_t *p_dec )
2285 {
2286     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2287
2288     if( p_owner->p_vout == NULL ||
2289         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2290         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2291         p_dec->fmt_out.video.i_visible_width != p_owner->video.i_visible_width ||
2292         p_dec->fmt_out.video.i_visible_height != p_owner->video.i_visible_height ||
2293         p_dec->fmt_out.video.i_x_offset != p_owner->video.i_x_offset  ||
2294         p_dec->fmt_out.video.i_y_offset != p_owner->video.i_y_offset  ||
2295         p_dec->fmt_out.i_codec != p_owner->video.i_chroma ||
2296         (int64_t)p_dec->fmt_out.video.i_sar_num * p_owner->video.i_sar_den !=
2297         (int64_t)p_dec->fmt_out.video.i_sar_den * p_owner->video.i_sar_num )
2298     {
2299         vout_thread_t *p_vout;
2300
2301         if( !p_dec->fmt_out.video.i_width ||
2302             !p_dec->fmt_out.video.i_height )
2303         {
2304             /* Can't create a new vout without display size */
2305             return NULL;
2306         }
2307
2308         video_format_t fmt = p_dec->fmt_out.video;
2309         fmt.i_chroma = p_dec->fmt_out.i_codec;
2310         p_owner->video = fmt;
2311
2312         if( vlc_fourcc_IsYUV( fmt.i_chroma ) )
2313         {
2314             const vlc_chroma_description_t *dsc = vlc_fourcc_GetChromaDescription( fmt.i_chroma );
2315             for( unsigned int i = 0; dsc && i < dsc->plane_count; i++ )
2316             {
2317                 while( fmt.i_width % dsc->p[i].w.den )
2318                     fmt.i_width++;
2319                 while( fmt.i_height % dsc->p[i].h.den )
2320                     fmt.i_height++;
2321             }
2322         }
2323
2324         if( !fmt.i_visible_width || !fmt.i_visible_height )
2325         {
2326             if( p_dec->fmt_in.video.i_visible_width &&
2327                 p_dec->fmt_in.video.i_visible_height )
2328             {
2329                 fmt.i_visible_width  = p_dec->fmt_in.video.i_visible_width;
2330                 fmt.i_visible_height = p_dec->fmt_in.video.i_visible_height;
2331                 fmt.i_x_offset       = p_dec->fmt_in.video.i_x_offset;
2332                 fmt.i_y_offset       = p_dec->fmt_in.video.i_y_offset;
2333             }
2334             else
2335             {
2336                 fmt.i_visible_width  = fmt.i_width;
2337                 fmt.i_visible_height = fmt.i_height;
2338                 fmt.i_x_offset       = 0;
2339                 fmt.i_y_offset       = 0;
2340             }
2341         }
2342
2343         if( fmt.i_visible_height == 1088 &&
2344             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2345         {
2346             fmt.i_visible_height = 1080;
2347             if( !(fmt.i_sar_num % 136))
2348             {
2349                 fmt.i_sar_num *= 135;
2350                 fmt.i_sar_den *= 136;
2351             }
2352             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2353         }
2354
2355         if( !fmt.i_sar_num || !fmt.i_sar_den )
2356         {
2357             fmt.i_sar_num = 1;
2358             fmt.i_sar_den = 1;
2359         }
2360
2361         vlc_ureduce( &fmt.i_sar_num, &fmt.i_sar_den,
2362                      fmt.i_sar_num, fmt.i_sar_den, 50000 );
2363
2364         vlc_mutex_lock( &p_owner->lock );
2365
2366         DecoderFlushBuffering( p_dec );
2367
2368         p_vout = p_owner->p_vout;
2369         p_owner->p_vout = NULL;
2370         vlc_mutex_unlock( &p_owner->lock );
2371
2372         unsigned dpb_size;
2373         switch( p_dec->fmt_in.i_codec )
2374         {
2375         case VLC_CODEC_H264:
2376         case VLC_CODEC_DIRAC: /* FIXME valid ? */
2377             dpb_size = 18;
2378             break;
2379         case VLC_CODEC_VP5:
2380         case VLC_CODEC_VP6:
2381         case VLC_CODEC_VP6F:
2382         case VLC_CODEC_VP8:
2383             dpb_size = 3;
2384             break;
2385         default:
2386             dpb_size = 2;
2387             break;
2388         }
2389         p_vout = input_resource_RequestVout( p_owner->p_resource,
2390                                              p_vout, &fmt,
2391                                              dpb_size +
2392                                              p_dec->i_extra_picture_buffers +
2393                                              1 + DECODER_MAX_BUFFERING_COUNT,
2394                                              true );
2395         vlc_mutex_lock( &p_owner->lock );
2396         p_owner->p_vout = p_vout;
2397
2398         DecoderUpdateFormatLocked( p_dec );
2399
2400         vlc_mutex_unlock( &p_owner->lock );
2401
2402         if( p_owner->p_input != NULL )
2403             input_SendEventVout( p_owner->p_input );
2404         if( p_vout == NULL )
2405         {
2406             msg_Err( p_dec, "failed to create video output" );
2407             p_dec->b_error = true;
2408             return NULL;
2409         }
2410     }
2411
2412     /* Get a new picture
2413      */
2414     for( ;; )
2415     {
2416         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2417             return NULL;
2418
2419         picture_t *p_picture = vout_GetPicture( p_owner->p_vout );
2420         if( p_picture )
2421             return p_picture;
2422
2423         if( DecoderIsFlushing( p_dec ) )
2424             return NULL;
2425
2426         /* */
2427         DecoderSignalBuffering( p_dec, true );
2428
2429         /* Check the decoder doesn't leak pictures */
2430         vout_FixLeaks( p_owner->p_vout );
2431
2432         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2433         msleep( VOUT_OUTMEM_SLEEP );
2434     }
2435 }
2436
2437 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2438 {
2439     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2440 }
2441
2442 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2443 {
2444     vout_HoldPicture( p_dec->p_owner->p_vout, p_pic );
2445 }
2446
2447 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2448 {
2449     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2450 }
2451
2452 static subpicture_t *spu_new_buffer( decoder_t *p_dec,
2453                                      const subpicture_updater_t *p_updater )
2454 {
2455     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2456     vout_thread_t *p_vout = NULL;
2457     subpicture_t *p_subpic;
2458     int i_attempts = 30;
2459
2460     while( i_attempts-- )
2461     {
2462         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2463             break;
2464
2465         p_vout = input_resource_HoldVout( p_owner->p_resource );
2466         if( p_vout )
2467             break;
2468
2469         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2470     }
2471
2472     if( !p_vout )
2473     {
2474         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2475         return NULL;
2476     }
2477
2478     if( p_owner->p_spu_vout != p_vout )
2479     {
2480         vlc_mutex_lock( &p_owner->lock );
2481
2482         DecoderFlushBuffering( p_dec );
2483
2484         vlc_mutex_unlock( &p_owner->lock );
2485
2486         p_owner->i_spu_channel = vout_RegisterSubpictureChannel( p_vout );
2487         p_owner->i_spu_order = 0;
2488         p_owner->p_spu_vout = p_vout;
2489     }
2490
2491     p_subpic = subpicture_New( p_updater );
2492     if( p_subpic )
2493     {
2494         p_subpic->i_channel = p_owner->i_spu_channel;
2495         p_subpic->i_order = p_owner->i_spu_order++;
2496         p_subpic->b_subtitle = true;
2497     }
2498
2499     vlc_object_release( p_vout );
2500
2501     return p_subpic;
2502 }
2503
2504 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2505 {
2506     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2507     vout_thread_t *p_vout = NULL;
2508
2509     p_vout = input_resource_HoldVout( p_owner->p_resource );
2510     if( !p_vout || p_owner->p_spu_vout != p_vout )
2511     {
2512         if( p_vout )
2513             vlc_object_release( p_vout );
2514         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2515         return;
2516     }
2517
2518     subpicture_Delete( p_subpic );
2519
2520     vlc_object_release( p_vout );
2521 }
2522