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       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  64 static void       DecoderFlush( decoder_t * );
  65 static void       DecoderSignalWait( decoder_t *, bool );
  66
  67 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  68
  69 /* Buffers allocation callbacks for the decoders */
  70 static picture_t *vout_new_buffer( decoder_t * );
  71 static void vout_del_buffer( decoder_t *, picture_t * );
  72 static void vout_link_picture( decoder_t *, picture_t * );
  73 static void vout_unlink_picture( decoder_t *, picture_t * );
  74 static int aout_update_format( decoder_t * );
  75 static subpicture_t *spu_new_buffer( decoder_t *, const subpicture_updater_t * );
  76 static void spu_del_buffer( decoder_t *, subpicture_t * );
  77
  78 struct decoder_owner_sys_t
  79 {
  80     int64_t         i_preroll_end;
  81
  82     input_thread_t  *p_input;
  83     input_resource_t*p_resource;
  84     input_clock_t   *p_clock;
  85     int             i_last_rate;
  86
  87     vout_thread_t   *p_spu_vout;
  88     int              i_spu_channel;
  89     int64_t          i_spu_order;
  90
  91     sout_instance_t         *p_sout;
  92     sout_packetizer_input_t *p_sout_input;
  93
  94     vlc_thread_t     thread;
  95
  96     /* Some decoders require already packetized data (ie. not truncated) */
  97     decoder_t *p_packetizer;
  98     bool b_packetizer;
  99
 100     /* Current format in use by the output */
 101     video_format_t video;
 102     audio_format_t audio;
 103     es_format_t    sout;
 104
 105     /* */
 106     bool           b_fmt_description;
 107     es_format_t    fmt_description;
 108     vlc_meta_t     *p_description;
 109
 110     /* fifo */
 111     block_fifo_t *p_fifo;
 112
 113     /* Lock for communication with decoder thread */
 114     vlc_mutex_t lock;
 115     vlc_cond_t  wait_request;
 116     vlc_cond_t  wait_acknowledge;
 117
 118     /* -- These variables need locking on write(only) -- */
 119     audio_output_t *p_aout;
 120
 121     vout_thread_t   *p_vout;
 122
 123     /* -- Theses variables need locking on read *and* write -- */
 124     bool b_exit;
 125
 126     /* Pause */
 127     bool b_paused;
 128     struct
 129     {
 130         mtime_t i_date;
 131         int     i_ignore;
 132     } pause;
 133
 134     /* Waiting */
 135     bool b_waiting;
 136     bool b_first;
 137     bool b_has_data;
 138
 139     /* Flushing */
 140     bool b_flushing;
 141
 142     /* CC */
 143     struct
 144     {
 145         bool b_supported;
 146         bool pb_present[4];
 147         decoder_t *pp_decoder[4];
 148     } cc;
 149
 150     /* Delay */
 151     mtime_t i_ts_delay;
 152 };
 153
 154 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 155  * a bogus PTS and won't be displayed */
 156 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 157
 158 /* */
 159 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 160
 161
 162 /*****************************************************************************
 163  * Public functions
 164  *****************************************************************************/
 165 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 166 {
 167     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 168     if( !p_picture )
 169         msg_Warn( p_decoder, "can't get output picture" );
 170     return p_picture;
 171 }
 172 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 173 {
 174     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 175 }
 176 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 177 {
 178     p_decoder->pf_picture_link( p_decoder, p_picture );
 179 }
 180 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 181 {
 182     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 183 }
 184
 185 block_t *decoder_NewAudioBuffer( decoder_t *dec, int samples )
 186 {
 187     if( decoder_UpdateAudioFormat( dec ) )
 188         return NULL;
 189
 190     size_t length = samples * dec->fmt_out.audio.i_bytes_per_frame
 191                             / dec->fmt_out.audio.i_frame_length;
 192     block_t *block = block_Alloc( length );
 193     if( likely(block != NULL) )
 194     {
 195         block->i_nb_samples = samples;
 196         block->i_pts = block->i_length = 0;
 197     }
 198     return block;
 199 }
 200
 201 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder,
 202                                      const subpicture_updater_t *p_dyn )
 203 {
 204     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder, p_dyn );
 205     if( !p_subpicture )
 206         msg_Warn( p_decoder, "can't get output subpicture" );
 207     return p_subpicture;
 208 }
 209
 210 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 211 {
 212     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 213 }
 214
 215 /* decoder_GetInputAttachments:
 216  */
 217 int decoder_GetInputAttachments( decoder_t *p_dec,
 218                                  input_attachment_t ***ppp_attachment,
 219                                  int *pi_attachment )
 220 {
 221     if( !p_dec->pf_get_attachments )
 222         return VLC_EGENERIC;
 223
 224     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 225 }
 226 /* decoder_GetDisplayDate:
 227  */
 228 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 229 {
 230     if( !p_dec->pf_get_display_date )
 231         return VLC_TS_INVALID;
 232
 233     return p_dec->pf_get_display_date( p_dec, i_ts );
 234 }
 235 /* decoder_GetDisplayRate:
 236  */
 237 int decoder_GetDisplayRate( decoder_t *p_dec )
 238 {
 239     if( !p_dec->pf_get_display_rate )
 240         return INPUT_RATE_DEFAULT;
 241
 242     return p_dec->pf_get_display_rate( p_dec );
 243 }
 244
 245 /* TODO: pass p_sout through p_resource? -- Courmisch */
 246 static decoder_t *decoder_New( vlc_object_t *p_parent, input_thread_t *p_input,
 247                                es_format_t *fmt, input_clock_t *p_clock,
 248                                input_resource_t *p_resource,
 249                                sout_instance_t *p_sout  )
 250 {
 251     decoder_t *p_dec = NULL;
 252     const char *psz_type = p_sout ? N_("packetizer") : N_("decoder");
 253     int i_priority;
 254
 255     /* Create the decoder configuration structure */
 256     p_dec = CreateDecoder( p_parent, p_input, fmt,
 257                            p_sout != NULL, p_resource, p_sout );
 258     if( p_dec == NULL )
 259     {
 260         msg_Err( p_parent, "could not create %s", psz_type );
 261         dialog_Fatal( p_parent, _("Streaming / Transcoding failed"),
 262                       _("VLC could not open the %s module."),
 263                       vlc_gettext( psz_type ) );
 264         return NULL;
 265     }
 266
 267     if( !p_dec->p_module )
 268     {
 269         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 270
 271         DeleteDecoder( p_dec );
 272         return NULL;
 273     }
 274
 275     p_dec->p_owner->p_clock = p_clock;
 276     assert( p_dec->fmt_out.i_cat != UNKNOWN_ES );
 277
 278     if( p_dec->fmt_out.i_cat == AUDIO_ES )
 279         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 280     else
 281         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 282
 283     /* Spawn the decoder thread */
 284     if( vlc_clone( &p_dec->p_owner->thread, DecoderThread, p_dec, i_priority ) )
 285     {
 286         msg_Err( p_dec, "cannot spawn decoder thread" );
 287         module_unneed( p_dec, p_dec->p_module );
 288         DeleteDecoder( p_dec );
 289         return NULL;
 290     }
 291
 292     return p_dec;
 293 }
 294
 295
 296 /**
 297  * Spawns a new decoder thread from the input thread
 298  *
 299  * \param p_input the input thread
 300  * \param p_es the es descriptor
 301  * \return the spawned decoder object
 302  */
 303 decoder_t *input_DecoderNew( input_thread_t *p_input,
 304                              es_format_t *fmt, input_clock_t *p_clock,
 305                              sout_instance_t *p_sout  )
 306 {
 307     return decoder_New( VLC_OBJECT(p_input), p_input, fmt, p_clock,
 308                         p_input->p->p_resource, p_sout );
 309 }
 310
 311 /**
 312  * Spawn a decoder thread outside of the input thread.
 313  */
 314 decoder_t *input_DecoderCreate( vlc_object_t *p_parent, es_format_t *fmt,
 315                                 input_resource_t *p_resource )
 316 {
 317     return decoder_New( p_parent, NULL, fmt, NULL, p_resource, NULL );
 318 }
 319
 320
 321 /**
 322  * Kills a decoder thread and waits until it's finished
 323  *
 324  * \param p_input the input thread
 325  * \param p_es the es descriptor
 326  * \return nothing
 327  */
 328 void input_DecoderDelete( decoder_t *p_dec )
 329 {
 330     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 331
 332     vlc_cancel( p_owner->thread );
 333
 334     /* Make sure we aren't paused/waiting/decoding anymore */
 335     vlc_mutex_lock( &p_owner->lock );
 336     const bool b_was_paused = p_owner->b_paused;
 337     p_owner->b_paused = false;
 338     p_owner->b_waiting = false;
 339     p_owner->b_flushing = true;
 340     p_owner->b_exit = true;
 341     vlc_cond_signal( &p_owner->wait_request );
 342     vlc_mutex_unlock( &p_owner->lock );
 343
 344     vlc_join( p_owner->thread, NULL );
 345     p_owner->b_paused = b_was_paused;
 346
 347     module_unneed( p_dec, p_dec->p_module );
 348
 349     /* */
 350     if( p_dec->p_owner->cc.b_supported )
 351     {
 352         int i;
 353         for( i = 0; i < 4; i++ )
 354             input_DecoderSetCcState( p_dec, false, i );
 355     }
 356
 357     /* Delete decoder */
 358     DeleteDecoder( p_dec );
 359 }
 360
 361 /**
 362  * Put a block_t in the decoder's fifo.
 363  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 364  *
 365  * \param p_dec the decoder object
 366  * \param p_block the data block
 367  */
 368 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block, bool b_do_pace )
 369 {
 370     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 371
 372     if( b_do_pace )
 373     {
 374         /* The fifo is not consumed when waiting and so will
 375          * deadlock vlc.
 376          * There is no need to lock as b_waiting is never modified
 377          * inside decoder thread. */
 378         if( !p_owner->b_waiting )
 379             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 380     }
 381 #ifdef __arm__
 382     else if( block_FifoSize( p_owner->p_fifo ) > 50*1024*1024 /* 50 MiB */ )
 383 #else
 384     else if( block_FifoSize( p_owner->p_fifo ) > 400*1024*1024 /* 400 MiB, ie ~ 50mb/s for 60s */ )
 385 #endif
 386     {
 387         /* FIXME: ideally we would check the time amount of data
 388          * in the FIFO instead of its size. */
 389         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 390                   "consumed quickly enough), resetting fifo!" );
 391         block_FifoEmpty( p_owner->p_fifo );
 392     }
 393
 394     block_FifoPut( p_owner->p_fifo, p_block );
 395 }
 396
 397 bool input_DecoderIsEmpty( decoder_t * p_dec )
 398 {
 399     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 400     assert( !p_owner->b_waiting );
 401
 402     bool b_empty = block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 403
 404     if( b_empty )
 405     {
 406         vlc_mutex_lock( &p_owner->lock );
 407         /* TODO subtitles support */
 408         if( p_dec->fmt_out.i_cat == VIDEO_ES && p_owner->p_vout )
 409             b_empty = vout_IsEmpty( p_owner->p_vout );
 410         else if( p_dec->fmt_out.i_cat == AUDIO_ES && p_owner->p_aout )
 411             b_empty = aout_DecIsEmpty( p_owner->p_aout );
 412         vlc_mutex_unlock( &p_owner->lock );
 413     }
 414     return b_empty;
 415 }
 416
 417 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 418 {
 419     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 420     int i;
 421
 422     vlc_mutex_lock( &p_owner->lock );
 423     for( i = 0; i < 4; i++ )
 424         pb_present[i] =  p_owner->cc.pb_present[i];
 425     vlc_mutex_unlock( &p_owner->lock );
 426 }
 427 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 428 {
 429     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 430
 431     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 432
 433     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 434         return VLC_EGENERIC;
 435
 436     if( b_decode )
 437     {
 438         static const vlc_fourcc_t fcc[4] = {
 439             VLC_FOURCC('c', 'c', '1', ' '),
 440             VLC_FOURCC('c', 'c', '2', ' '),
 441             VLC_FOURCC('c', 'c', '3', ' '),
 442             VLC_FOURCC('c', 'c', '4', ' '),
 443         };
 444         decoder_t *p_cc;
 445         es_format_t fmt;
 446
 447         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 448         p_cc = input_DecoderNew( p_owner->p_input, &fmt,
 449                               p_dec->p_owner->p_clock, p_owner->p_sout );
 450         if( !p_cc )
 451         {
 452             msg_Err( p_dec, "could not create decoder" );
 453             dialog_Fatal( p_dec, _("Streaming / Transcoding failed"), "%s",
 454                           _("VLC could not open the decoder module.") );
 455             return VLC_EGENERIC;
 456         }
 457         else if( !p_cc->p_module )
 458         {
 459             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 460             input_DecoderDelete(p_cc);
 461             return VLC_EGENERIC;
 462         }
 463         p_cc->p_owner->p_clock = p_owner->p_clock;
 464
 465         vlc_mutex_lock( &p_owner->lock );
 466         p_owner->cc.pp_decoder[i_channel] = p_cc;
 467         vlc_mutex_unlock( &p_owner->lock );
 468     }
 469     else
 470     {
 471         decoder_t *p_cc;
 472
 473         vlc_mutex_lock( &p_owner->lock );
 474         p_cc = p_owner->cc.pp_decoder[i_channel];
 475         p_owner->cc.pp_decoder[i_channel] = NULL;
 476         vlc_mutex_unlock( &p_owner->lock );
 477
 478         if( p_cc )
 479             input_DecoderDelete(p_cc);
 480     }
 481     return VLC_SUCCESS;
 482 }
 483 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 484 {
 485     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 486
 487     *pb_decode = false;
 488     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 489         return VLC_EGENERIC;
 490
 491     vlc_mutex_lock( &p_owner->lock );
 492     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 493     vlc_mutex_unlock( &p_owner->lock );
 494     return VLC_EGENERIC;
 495 }
 496
 497 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 498 {
 499     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 500
 501     vlc_mutex_lock( &p_owner->lock );
 502     /* Normally, p_owner->b_paused != b_paused here. But if a track is added
 503      * while the input is paused (e.g. add sub file), then b_paused is
 504      * (incorrectly) false. */
 505     if( likely(p_owner->b_paused != b_paused) ) {
 506         p_owner->b_paused = b_paused;
 507         p_owner->pause.i_date = i_date;
 508         p_owner->pause.i_ignore = 0;
 509         vlc_cond_signal( &p_owner->wait_request );
 510
 511         DecoderOutputChangePause( p_dec, b_paused, i_date );
 512     }
 513     vlc_mutex_unlock( &p_owner->lock );
 514 }
 515
 516 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 517 {
 518     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 519
 520     vlc_mutex_lock( &p_owner->lock );
 521     p_owner->i_ts_delay = i_delay;
 522     vlc_mutex_unlock( &p_owner->lock );
 523 }
 524
 525 void input_DecoderStartWait( decoder_t *p_dec )
 526 {
 527     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 528
 529     vlc_mutex_lock( &p_owner->lock );
 530
 531     DecoderFlush( p_dec );
 532
 533     p_owner->b_first = true;
 534     p_owner->b_has_data = false;
 535
 536     p_owner->b_waiting = true;
 537
 538     vlc_cond_signal( &p_owner->wait_request );
 539
 540     vlc_mutex_unlock( &p_owner->lock );
 541 }
 542
 543 void input_DecoderStopWait( decoder_t *p_dec )
 544 {
 545     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 546
 547     vlc_mutex_lock( &p_owner->lock );
 548
 549     p_owner->b_waiting = false;
 550
 551     vlc_cond_signal( &p_owner->wait_request );
 552
 553     vlc_mutex_unlock( &p_owner->lock );
 554 }
 555
 556 void input_DecoderWait( decoder_t *p_dec )
 557 {
 558     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 559
 560     vlc_mutex_lock( &p_owner->lock );
 561
 562     while( p_owner->b_waiting && !p_owner->b_has_data )
 563     {
 564         block_FifoWake( p_owner->p_fifo );
 565         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
 566     }
 567
 568     vlc_mutex_unlock( &p_owner->lock );
 569 }
 570
 571 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 572 {
 573     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 574
 575     *pi_duration = 0;
 576
 577     vlc_mutex_lock( &p_owner->lock );
 578     if( p_dec->fmt_out.i_cat == VIDEO_ES )
 579     {
 580         if( p_owner->b_paused && p_owner->p_vout )
 581         {
 582             vout_NextPicture( p_owner->p_vout, pi_duration );
 583             p_owner->pause.i_ignore++;
 584             vlc_cond_signal( &p_owner->wait_request );
 585         }
 586     }
 587     else
 588     {
 589         /* TODO subtitle should not be flushed */
 590         DecoderFlush( p_dec );
 591     }
 592     vlc_mutex_unlock( &p_owner->lock );
 593 }
 594
 595 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
 596 {
 597     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 598     bool b_changed;
 599
 600     vlc_mutex_lock( &p_owner->lock );
 601     b_changed = p_owner->b_fmt_description;
 602     if( b_changed )
 603     {
 604         if( p_fmt )
 605             es_format_Copy( p_fmt, &p_owner->fmt_description );
 606
 607         if( pp_meta )
 608         {
 609             *pp_meta = NULL;
 610             if( p_owner->p_description )
 611             {
 612                 *pp_meta = vlc_meta_New();
 613                 if( *pp_meta )
 614                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
 615             }
 616         }
 617         p_owner->b_fmt_description = false;
 618     }
 619     vlc_mutex_unlock( &p_owner->lock );
 620     return b_changed;
 621 }
 622
 623 size_t input_DecoderGetFifoSize( decoder_t *p_dec )
 624 {
 625     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 626
 627     return block_FifoSize( p_owner->p_fifo );
 628 }
 629
 630 void input_DecoderGetObjects( decoder_t *p_dec,
 631                               vout_thread_t **pp_vout, audio_output_t **pp_aout )
 632 {
 633     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 634
 635     vlc_mutex_lock( &p_owner->lock );
 636     if( pp_vout )
 637         *pp_vout = p_owner->p_vout ? vlc_object_hold( p_owner->p_vout ) : NULL;
 638     if( pp_aout )
 639         *pp_aout = p_owner->p_aout ? vlc_object_hold( p_owner->p_aout ) : NULL;
 640     vlc_mutex_unlock( &p_owner->lock );
 641 }
 642
 643 /*****************************************************************************
 644  * Internal functions
 645  *****************************************************************************/
 646 static int DecoderGetInputAttachments( decoder_t *p_dec,
 647                                        input_attachment_t ***ppp_attachment,
 648                                        int *pi_attachment )
 649 {
 650     input_thread_t *p_input = p_dec->p_owner->p_input;
 651
 652     if( unlikely(p_input == NULL) )
 653         return VLC_ENOOBJ;
 654     return input_Control( p_input, INPUT_GET_ATTACHMENTS,
 655                           ppp_attachment, pi_attachment );
 656 }
 657 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 658 {
 659     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 660
 661     vlc_mutex_lock( &p_owner->lock );
 662     if( p_owner->b_waiting || p_owner->b_paused )
 663         i_ts = VLC_TS_INVALID;
 664     vlc_mutex_unlock( &p_owner->lock );
 665
 666     if( !p_owner->p_clock || i_ts <= VLC_TS_INVALID )
 667         return i_ts;
 668
 669     if( input_clock_ConvertTS( p_owner->p_clock, NULL, &i_ts, NULL, INT64_MAX ) ) {
 670         msg_Err(p_dec, "Could not get display date for timestamp %"PRId64"", i_ts);
 671         return VLC_TS_INVALID;
 672     }
 673
 674     return i_ts;
 675 }
 676 static int DecoderGetDisplayRate( decoder_t *p_dec )
 677 {
 678     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 679
 680     if( !p_owner->p_clock )
 681         return INPUT_RATE_DEFAULT;
 682     return input_clock_GetRate( p_owner->p_clock );
 683 }
 684
 685 /* */
 686 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 687 {
 688     if (codec != VLC_FOURCC('u','n','d','f')) {
 689         const char *desc = vlc_fourcc_GetDescription(p_dec->fmt_in.i_cat, codec);
 690         if (!desc || !*desc)
 691             desc = N_("No description for this codec");
 692         msg_Err( p_dec, "Codec `%4.4s' (%s) is not supported.", (char*)&codec, desc );
 693         dialog_Fatal( p_dec, _("Codec not supported"),
 694                 _("VLC could not decode the format \"%4.4s\" (%s)"),
 695                 (char*)&codec, desc );
 696     } else {
 697         msg_Err( p_dec, "could not identify codec" );
 698         dialog_Fatal( p_dec, _("Unidentified codec"),
 699             _("VLC could not identify the audio or video codec" ) );
 700     }
 701 }
 702
 703
 704 /**
 705  * Create a decoder object
 706  *
 707  * \param p_input the input thread
 708  * \param p_es the es descriptor
 709  * \param b_packetizer instead of a decoder
 710  * \return the decoder object
 711  */
 712 static decoder_t * CreateDecoder( vlc_object_t *p_parent,
 713                                   input_thread_t *p_input,
 714                                   es_format_t *fmt, bool b_packetizer,
 715                                   input_resource_t *p_resource,
 716                                   sout_instance_t *p_sout )
 717 {
 718     decoder_t *p_dec;
 719     decoder_owner_sys_t *p_owner;
 720     es_format_t null_es_format;
 721
 722     p_dec = vlc_custom_create( p_parent, sizeof( *p_dec ), "decoder" );
 723     if( p_dec == NULL )
 724         return NULL;
 725
 726     p_dec->pf_decode_audio = NULL;
 727     p_dec->pf_decode_video = NULL;
 728     p_dec->pf_decode_sub = NULL;
 729     p_dec->pf_get_cc = NULL;
 730     p_dec->pf_packetize = NULL;
 731
 732     /* Initialize the decoder */
 733     p_dec->p_module = NULL;
 734
 735     memset( &null_es_format, 0, sizeof(es_format_t) );
 736     es_format_Copy( &p_dec->fmt_in, fmt );
 737     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 738
 739     p_dec->p_description = NULL;
 740
 741     /* Allocate our private structure for the decoder */
 742     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 743     if( unlikely(p_owner == NULL) )
 744     {
 745         vlc_object_release( p_dec );
 746         return NULL;
 747     }
 748     p_owner->i_preroll_end = VLC_TS_INVALID;
 749     p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 750     p_owner->p_input = p_input;
 751     p_owner->p_resource = p_resource;
 752     p_owner->p_aout = NULL;
 753     p_owner->p_vout = NULL;
 754     p_owner->p_spu_vout = NULL;
 755     p_owner->i_spu_channel = 0;
 756     p_owner->i_spu_order = 0;
 757     p_owner->p_sout = p_sout;
 758     p_owner->p_sout_input = NULL;
 759     p_owner->p_packetizer = NULL;
 760     p_owner->b_packetizer = b_packetizer;
 761
 762     /* decoder fifo */
 763     p_owner->p_fifo = block_FifoNew();
 764     if( unlikely(p_owner->p_fifo == NULL) )
 765     {
 766         free( p_owner );
 767         vlc_object_release( p_dec );
 768         return NULL;
 769     }
 770
 771     /* Set buffers allocation callbacks for the decoders */
 772     p_dec->pf_aout_format_update = aout_update_format;
 773     p_dec->pf_vout_buffer_new = vout_new_buffer;
 774     p_dec->pf_vout_buffer_del = vout_del_buffer;
 775     p_dec->pf_picture_link    = vout_link_picture;
 776     p_dec->pf_picture_unlink  = vout_unlink_picture;
 777     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 778     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 779     /* */
 780     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 781     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 782     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 783
 784     /* Find a suitable decoder/packetizer module */
 785     if( !b_packetizer )
 786         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
 787     else
 788         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
 789
 790     /* Check if decoder requires already packetized data */
 791     if( !b_packetizer &&
 792         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 793     {
 794         p_owner->p_packetizer =
 795             vlc_custom_create( p_parent, sizeof( decoder_t ), "packetizer" );
 796         if( p_owner->p_packetizer )
 797         {
 798             es_format_Copy( &p_owner->p_packetizer->fmt_in,
 799                             &p_dec->fmt_in );
 800
 801             es_format_Copy( &p_owner->p_packetizer->fmt_out,
 802                             &null_es_format );
 803
 804             p_owner->p_packetizer->p_module =
 805                 module_need( p_owner->p_packetizer,
 806                              "packetizer", "$packetizer", false );
 807
 808             if( !p_owner->p_packetizer->p_module )
 809             {
 810                 es_format_Clean( &p_owner->p_packetizer->fmt_in );
 811                 vlc_object_release( p_owner->p_packetizer );
 812             }
 813         }
 814     }
 815
 816     /* Copy ourself the input replay gain */
 817     if( fmt->i_cat == AUDIO_ES )
 818     {
 819         for( unsigned i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 820         {
 821             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 822             {
 823                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 824                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 825             }
 826             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 827             {
 828                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 829                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 830             }
 831         }
 832     }
 833
 834     /* */
 835     vlc_mutex_init( &p_owner->lock );
 836     vlc_cond_init( &p_owner->wait_request );
 837     vlc_cond_init( &p_owner->wait_acknowledge );
 838
 839     p_owner->b_fmt_description = false;
 840     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 841     p_owner->p_description = NULL;
 842
 843     p_owner->b_exit = false;
 844
 845     p_owner->b_paused = false;
 846     p_owner->pause.i_date = VLC_TS_INVALID;
 847     p_owner->pause.i_ignore = 0;
 848
 849     p_owner->b_waiting = false;
 850     p_owner->b_first = true;
 851     p_owner->b_has_data = false;
 852
 853     p_owner->b_flushing = false;
 854
 855     /* */
 856     p_owner->cc.b_supported = false;
 857     if( !b_packetizer )
 858     {
 859         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 860             p_owner->cc.b_supported = true;
 861         if( p_dec->pf_get_cc )
 862             p_owner->cc.b_supported = true;
 863     }
 864
 865     for( unsigned i = 0; i < 4; i++ )
 866     {
 867         p_owner->cc.pb_present[i] = false;
 868         p_owner->cc.pp_decoder[i] = NULL;
 869     }
 870     p_owner->i_ts_delay = 0;
 871     return p_dec;
 872 }
 873
 874 /**
 875  * The decoding main loop
 876  *
 877  * \param p_dec the decoder
 878  */
 879 static void *DecoderThread( void *p_data )
 880 {
 881     decoder_t *p_dec = (decoder_t *)p_data;
 882     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 883
 884     /* The decoder's main loop */
 885     for( ;; )
 886     {
 887         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 888
 889         /* Make sure there is no cancellation point other than this one^^.
 890          * If you need one, be sure to push cleanup of p_block. */
 891         bool end_wait = !p_block || p_block->i_flags & BLOCK_FLAG_CORE_EOS;
 892         DecoderSignalWait( p_dec, end_wait );
 893         if (end_wait)
 894             input_DecoderStopWait( p_dec );
 895
 896         if( p_block )
 897         {
 898             int canc = vlc_savecancel();
 899
 900             if( p_block->i_flags & BLOCK_FLAG_CORE_EOS )
 901             {
 902                 /* calling DecoderProcess() with NULL block will make
 903                  * decoders/packetizers flush their buffers */
 904                 block_Release( p_block );
 905                 p_block = NULL;
 906             }
 907
 908             DecoderProcess( p_dec, p_block );
 909
 910             vlc_restorecancel( canc );
 911         }
 912     }
 913     return NULL;
 914 }
 915
 916 static block_t *DecoderBlockFlushNew()
 917 {
 918     block_t *p_null = block_Alloc( 128 );
 919     if( !p_null )
 920         return NULL;
 921
 922     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY |
 923                        BLOCK_FLAG_CORRUPTED |
 924                        BLOCK_FLAG_CORE_FLUSH;
 925     memset( p_null->p_buffer, 0, p_null->i_buffer );
 926
 927     return p_null;
 928 }
 929
 930 static void DecoderFlush( decoder_t *p_dec )
 931 {
 932     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 933
 934     vlc_assert_locked( &p_owner->lock );
 935
 936     /* Empty the fifo */
 937     block_FifoEmpty( p_owner->p_fifo );
 938
 939     /* Monitor for flush end */
 940     p_owner->b_flushing = true;
 941     vlc_cond_signal( &p_owner->wait_request );
 942
 943     /* Send a special block */
 944     block_t *p_null = DecoderBlockFlushNew();
 945     if( !p_null )
 946         return;
 947     input_DecoderDecode( p_dec, p_null, false );
 948
 949     /* */
 950     while( p_owner->b_flushing )
 951         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
 952 }
 953
 954 static void DecoderSignalWait( decoder_t *p_dec, bool b_has_data )
 955 {
 956     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 957
 958     vlc_mutex_lock( &p_owner->lock );
 959
 960     if( p_owner->b_waiting )
 961     {
 962         if( b_has_data )
 963             p_owner->b_has_data = true;
 964         vlc_cond_signal( &p_owner->wait_acknowledge );
 965     }
 966
 967     vlc_mutex_unlock( &p_owner->lock );
 968 }
 969
 970 static bool DecoderIsFlushing( decoder_t *p_dec )
 971 {
 972     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 973     bool b_flushing;
 974
 975     vlc_mutex_lock( &p_owner->lock );
 976
 977     b_flushing = p_owner->b_flushing;
 978
 979     vlc_mutex_unlock( &p_owner->lock );
 980
 981     return b_flushing;
 982 }
 983
 984 static bool DecoderWaitUnblock( decoder_t *p_dec )
 985 {
 986     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 987
 988     vlc_assert_locked( &p_owner->lock );
 989
 990     for( ;; )
 991     {
 992         if( p_owner->b_flushing )
 993             break;
 994         if( p_owner->b_paused )
 995         {
 996             if( p_owner->b_waiting && !p_owner->b_has_data )
 997                 break;
 998             if( p_owner->pause.i_ignore > 0 )
 999             {
1000                 p_owner->pause.i_ignore--;
1001                 break;
1002             }
1003         }
1004         else
1005         {
1006             if( !p_owner->b_waiting || !p_owner->b_has_data )
1007                 break;
1008         }
1009         vlc_cond_wait( &p_owner->wait_request, &p_owner->lock );
1010     }
1011
1012     return p_owner->b_flushing;
1013 }
1014
1015 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
1016 {
1017     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1018
1019     vlc_assert_locked( &p_owner->lock );
1020
1021     /* XXX only audio and video output have to be paused.
1022      * - for sout it is useless
1023      * - for subs, it is done by the vout
1024      */
1025     if( p_dec->fmt_out.i_cat == AUDIO_ES )
1026     {
1027         if( p_owner->p_aout )
1028             aout_DecChangePause( p_owner->p_aout, b_paused, i_date );
1029     }
1030     else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1031     {
1032         if( p_owner->p_vout )
1033             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1034     }
1035 }
1036 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1037 {
1038     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1039         *pi_preroll = INT64_MAX;
1040     else if( p->i_dts > VLC_TS_INVALID )
1041         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1042     else if( p->i_pts > VLC_TS_INVALID )
1043         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1044 }
1045
1046 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1047                           mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound )
1048 {
1049     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1050     input_clock_t   *p_clock = p_owner->p_clock;
1051
1052     vlc_assert_locked( &p_owner->lock );
1053
1054     const mtime_t i_es_delay = p_owner->i_ts_delay;
1055
1056     if( !p_clock )
1057         return;
1058
1059     const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1060     int i_rate;
1061
1062     if( *pi_ts0 > VLC_TS_INVALID )
1063     {
1064         *pi_ts0 += i_es_delay;
1065         if( pi_ts1 && *pi_ts1 > VLC_TS_INVALID )
1066             *pi_ts1 += i_es_delay;
1067         if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) ) {
1068             msg_Err(p_dec, "Could not convert timestamps %"PRId64", %"PRId64"", pi_ts0, pi_ts1);
1069             *pi_ts0 = VLC_TS_INVALID;
1070         }
1071     }
1072     else
1073     {
1074         i_rate = input_clock_GetRate( p_clock );
1075     }
1076
1077     /* Do not create ephemere data because of rounding errors */
1078     if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1079         *pi_ts1 += 1;
1080
1081     if( pi_duration )
1082         *pi_duration = ( *pi_duration * i_rate + INPUT_RATE_DEFAULT-1 )
1083             / INPUT_RATE_DEFAULT;
1084
1085     if( pi_rate )
1086         *pi_rate = i_rate;
1087 }
1088
1089 static bool DecoderIsExitRequested( decoder_t *p_dec )
1090 {
1091     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1092
1093     vlc_mutex_lock( &p_owner->lock );
1094     bool b_exit = p_owner->b_exit;
1095     vlc_mutex_unlock( &p_owner->lock );
1096
1097     return b_exit;
1098 }
1099
1100 /**
1101  * If *pb_reject, it does nothing, otherwise it waits for the given
1102  * deadline or a flush request (in which case it set *pi_reject to true.
1103  */
1104 static void DecoderWaitDate( decoder_t *p_dec,
1105                              bool *pb_reject, mtime_t i_deadline )
1106 {
1107     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1108
1109     vlc_assert_locked( &p_owner->lock );
1110
1111     if( *pb_reject || i_deadline < 0 )
1112         return;
1113
1114     do
1115     {
1116         if( p_owner->b_flushing || p_owner->b_exit )
1117         {
1118             *pb_reject = true;
1119             break;
1120         }
1121     }
1122     while( vlc_cond_timedwait( &p_owner->wait_request, &p_owner->lock,
1123                                i_deadline ) == 0 );
1124 }
1125
1126 static void DecoderPlayAudio( decoder_t *p_dec, block_t *p_audio,
1127                               int *pi_played_sum, int *pi_lost_sum )
1128 {
1129     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1130     audio_output_t *p_aout = p_owner->p_aout;
1131
1132     /* */
1133     if( p_audio && p_audio->i_pts <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify audio_output/*
1134     {
1135         msg_Warn( p_dec, "non-dated audio buffer received" );
1136         *pi_lost_sum += 1;
1137         block_Release( p_audio );
1138         return;
1139     }
1140
1141     /* */
1142     vlc_mutex_lock( &p_owner->lock );
1143
1144     if( p_audio && p_owner->b_waiting )
1145     {
1146         p_owner->b_has_data = true;
1147         vlc_cond_signal( &p_owner->wait_acknowledge );
1148     }
1149
1150     for( ;; )
1151     {
1152         bool b_paused;
1153
1154         bool b_reject = DecoderWaitUnblock( p_dec );
1155
1156         b_paused = p_owner->b_paused;
1157
1158         if (!p_audio)
1159             break;
1160
1161         /* */
1162         int i_rate = INPUT_RATE_DEFAULT;
1163
1164         DecoderFixTs( p_dec, &p_audio->i_pts, NULL, &p_audio->i_length,
1165                       &i_rate, AOUT_MAX_ADVANCE_TIME );
1166
1167         if( p_audio->i_pts <= VLC_TS_INVALID
1168          || i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE
1169          || i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1170             b_reject = true;
1171
1172         DecoderWaitDate( p_dec, &b_reject,
1173                          p_audio->i_pts - AOUT_MAX_PREPARE_TIME );
1174
1175         if( unlikely(p_owner->b_paused != b_paused) )
1176             continue; /* race with input thread? retry... */
1177         if( p_aout == NULL )
1178             b_reject = true;
1179
1180         if( !b_reject )
1181         {
1182             assert( !p_owner->b_paused );
1183             if( !aout_DecPlay( p_aout, p_audio, i_rate ) )
1184                 *pi_played_sum += 1;
1185             *pi_lost_sum += aout_DecGetResetLost( p_aout );
1186         }
1187         else
1188         {
1189             msg_Dbg( p_dec, "discarded audio buffer" );
1190             *pi_lost_sum += 1;
1191             block_Release( p_audio );
1192         }
1193
1194         break;
1195     }
1196     vlc_mutex_unlock( &p_owner->lock );
1197 }
1198
1199 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1200 {
1201     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1202     block_t *p_aout_buf;
1203     int i_decoded = 0;
1204     int i_lost = 0;
1205     int i_played = 0;
1206
1207     if (!p_block) {
1208         /* Play a NULL block to output buffered frames */
1209         DecoderPlayAudio( p_dec, NULL, &i_played, &i_lost );
1210     }
1211     else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1212     {
1213         if( DecoderIsExitRequested( p_dec ) )
1214         {
1215             /* It prevent freezing VLC in case of broken decoder */
1216             block_Release( p_aout_buf );
1217             if( p_block )
1218                 block_Release( p_block );
1219             break;
1220         }
1221         i_decoded++;
1222
1223         if( p_owner->i_preroll_end > VLC_TS_INVALID &&
1224             p_aout_buf->i_pts < p_owner->i_preroll_end )
1225         {
1226             block_Release( p_aout_buf );
1227             continue;
1228         }
1229
1230         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1231         {
1232             msg_Dbg( p_dec, "End of audio preroll" );
1233             if( p_owner->p_aout )
1234                 aout_DecFlush( p_owner->p_aout );
1235             /* */
1236             p_owner->i_preroll_end = VLC_TS_INVALID;
1237         }
1238
1239         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1240     }
1241
1242     /* Update ugly stat */
1243     input_thread_t  *p_input = p_owner->p_input;
1244
1245     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_played > 0) )
1246     {
1247         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1248         stats_Update( p_input->p->counters.p_lost_abuffers, i_lost, NULL );
1249         stats_Update( p_input->p->counters.p_played_abuffers, i_played, NULL );
1250         stats_Update( p_input->p->counters.p_decoded_audio, i_decoded, NULL );
1251         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1252     }
1253 }
1254 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1255 {
1256     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1257     block_t *p_cc;
1258     bool pb_present[4];
1259     bool b_processed = false;
1260     int i;
1261     int i_cc_decoder;
1262
1263     assert( p_dec_cc->pf_get_cc != NULL );
1264
1265     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1266     if( !p_owner->cc.b_supported )
1267         return;
1268
1269     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1270     if( !p_cc )
1271         return;
1272
1273     vlc_mutex_lock( &p_owner->lock );
1274     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1275     {
1276         p_owner->cc.pb_present[i] |= pb_present[i];
1277         if( p_owner->cc.pp_decoder[i] )
1278             i_cc_decoder++;
1279     }
1280
1281     for( i = 0; i < 4; i++ )
1282     {
1283         if( !p_owner->cc.pp_decoder[i] )
1284             continue;
1285
1286         block_FifoPut( p_owner->cc.pp_decoder[i]->p_owner->p_fifo,
1287             (i_cc_decoder > 1) ? block_Duplicate(p_cc) : p_cc);
1288
1289         i_cc_decoder--;
1290         b_processed = true;
1291     }
1292     vlc_mutex_unlock( &p_owner->lock );
1293
1294     if( !b_processed )
1295         block_Release( p_cc );
1296 }
1297
1298 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1299                               int *pi_played_sum, int *pi_lost_sum )
1300 {
1301     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1302     vout_thread_t  *p_vout = p_owner->p_vout;
1303
1304     if( p_picture->date <= VLC_TS_INVALID )
1305     {
1306         msg_Warn( p_dec, "non-dated video buffer received" );
1307         *pi_lost_sum += 1;
1308         vout_ReleasePicture( p_vout, p_picture );
1309         return;
1310     }
1311
1312     /* */
1313     vlc_mutex_lock( &p_owner->lock );
1314
1315     if( p_owner->b_waiting && !p_owner->b_first )
1316     {
1317         p_owner->b_has_data = true;
1318         vlc_cond_signal( &p_owner->wait_acknowledge );
1319     }
1320     bool b_first_after_wait = p_owner->b_waiting && p_owner->b_has_data;
1321
1322     bool b_reject = DecoderWaitUnblock( p_dec );
1323
1324     if( p_owner->b_waiting )
1325     {
1326         assert( p_owner->b_first );
1327         msg_Dbg( p_dec, "Received first picture" );
1328         p_owner->b_first = false;
1329         p_picture->b_force = true;
1330     }
1331
1332     const bool b_dated = p_picture->date > VLC_TS_INVALID;
1333     int i_rate = INPUT_RATE_DEFAULT;
1334     DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1335                   &i_rate, DECODER_BOGUS_VIDEO_DELAY );
1336
1337     vlc_mutex_unlock( &p_owner->lock );
1338
1339     /* */
1340     if( !p_picture->b_force && p_picture->date <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify video_output/*
1341         b_reject = true;
1342
1343     if( !b_reject )
1344     {
1345         if( i_rate != p_owner->i_last_rate || b_first_after_wait )
1346         {
1347             /* Be sure to not display old picture after our own */
1348             vout_Flush( p_vout, p_picture->date );
1349             p_owner->i_last_rate = i_rate;
1350         }
1351         vout_PutPicture( p_vout, p_picture );
1352     }
1353     else
1354     {
1355         if( b_dated )
1356             msg_Warn( p_dec, "early picture skipped" );
1357         else
1358             msg_Warn( p_dec, "non-dated video buffer received" );
1359
1360         *pi_lost_sum += 1;
1361         vout_ReleasePicture( p_vout, p_picture );
1362     }
1363     int i_tmp_display;
1364     int i_tmp_lost;
1365     vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1366
1367     *pi_played_sum += i_tmp_display;
1368     *pi_lost_sum += i_tmp_lost;
1369 }
1370
1371 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1372 {
1373     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1374     picture_t      *p_pic;
1375     int i_lost = 0;
1376     int i_decoded = 0;
1377     int i_displayed = 0;
1378
1379     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1380     {
1381         vout_thread_t  *p_vout = p_owner->p_vout;
1382         if( DecoderIsExitRequested( p_dec ) )
1383         {
1384             /* It prevent freezing VLC in case of broken decoder */
1385             vout_ReleasePicture( p_vout, p_pic );
1386             if( p_block )
1387                 block_Release( p_block );
1388             break;
1389         }
1390
1391         i_decoded++;
1392
1393         if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
1394         {
1395             vout_ReleasePicture( p_vout, p_pic );
1396             continue;
1397         }
1398
1399         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1400         {
1401             msg_Dbg( p_dec, "End of video preroll" );
1402             if( p_vout )
1403                 vout_Flush( p_vout, VLC_TS_INVALID+1 );
1404             /* */
1405             p_owner->i_preroll_end = VLC_TS_INVALID;
1406         }
1407
1408         if( p_dec->pf_get_cc &&
1409             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1410             DecoderGetCc( p_dec, p_dec );
1411
1412         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1413     }
1414
1415     /* Update ugly stat */
1416     input_thread_t *p_input = p_owner->p_input;
1417
1418     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
1419     {
1420         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1421         stats_Update( p_input->p->counters.p_decoded_video, i_decoded, NULL );
1422         stats_Update( p_input->p->counters.p_lost_pictures, i_lost , NULL);
1423         stats_Update( p_input->p->counters.p_displayed_pictures,
1424                       i_displayed, NULL);
1425         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1426     }
1427 }
1428
1429 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic )
1430 {
1431     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1432     vout_thread_t *p_vout = p_owner->p_spu_vout;
1433
1434     /* */
1435     if( p_subpic->i_start <= VLC_TS_INVALID )
1436     {
1437         msg_Warn( p_dec, "non-dated spu buffer received" );
1438         subpicture_Delete( p_subpic );
1439         return;
1440     }
1441
1442     /* */
1443     vlc_mutex_lock( &p_owner->lock );
1444
1445     if( p_owner->b_waiting )
1446     {
1447         p_owner->b_has_data = true;
1448         vlc_cond_signal( &p_owner->wait_acknowledge );
1449     }
1450
1451     bool b_reject = DecoderWaitUnblock( p_dec );
1452
1453     DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1454                   NULL, INT64_MAX );
1455
1456     if( p_subpic->i_start <= VLC_TS_INVALID )
1457         b_reject = true;
1458
1459     DecoderWaitDate( p_dec, &b_reject,
1460                      p_subpic->i_start - SPU_MAX_PREPARE_TIME );
1461     vlc_mutex_unlock( &p_owner->lock );
1462
1463     if( !b_reject )
1464         vout_PutSubpicture( p_vout, p_subpic );
1465     else
1466         subpicture_Delete( p_subpic );
1467 }
1468
1469 #ifdef ENABLE_SOUT
1470 static int DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block )
1471 {
1472     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1473
1474     assert( p_owner->p_clock );
1475     assert( !p_sout_block->p_next );
1476
1477     vlc_mutex_lock( &p_owner->lock );
1478
1479     if( p_owner->b_waiting )
1480     {
1481         p_owner->b_has_data = true;
1482         vlc_cond_signal( &p_owner->wait_acknowledge );
1483     }
1484
1485     bool b_reject = DecoderWaitUnblock( p_dec );
1486
1487     DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1488                   &p_sout_block->i_length, NULL, INT64_MAX );
1489
1490     vlc_mutex_unlock( &p_owner->lock );
1491
1492     if( !b_reject )
1493     {
1494         /* FIXME --VLC_TS_INVALID inspect stream_output*/
1495         return sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block );
1496     }
1497     else
1498     {
1499         block_Release( p_sout_block );
1500         return VLC_EGENERIC;
1501     }
1502 }
1503 #endif
1504
1505 #ifdef ENABLE_SOUT
1506 /* This function process a block for sout
1507  */
1508 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1509 {
1510     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1511     block_t *p_sout_block;
1512
1513     while( ( p_sout_block =
1514                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1515     {
1516         if( !p_owner->p_sout_input )
1517         {
1518             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1519
1520             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1521             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1522             if( p_dec->fmt_in.psz_language )
1523             {
1524                 free( p_owner->sout.psz_language );
1525                 p_owner->sout.psz_language =
1526                     strdup( p_dec->fmt_in.psz_language );
1527             }
1528
1529             p_owner->p_sout_input =
1530                 sout_InputNew( p_owner->p_sout,
1531                                &p_owner->sout );
1532
1533             if( p_owner->p_sout_input == NULL )
1534             {
1535                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1536                          (char *)&p_owner->sout.i_codec );
1537                 p_dec->b_error = true;
1538
1539                 block_ChainRelease(p_sout_block);
1540                 break;
1541             }
1542         }
1543
1544         while( p_sout_block )
1545         {
1546             block_t *p_next = p_sout_block->p_next;
1547
1548             p_sout_block->p_next = NULL;
1549
1550             if( DecoderPlaySout( p_dec, p_sout_block ) == VLC_EGENERIC )
1551             {
1552                 msg_Err( p_dec, "cannot continue streaming due to errors" );
1553
1554                 p_dec->b_error = true;
1555
1556                 /* Cleanup */
1557                 block_ChainRelease( p_next );
1558                 return;
1559             }
1560
1561             p_sout_block = p_next;
1562         }
1563     }
1564 }
1565 #endif
1566
1567 /* This function process a video block
1568  */
1569 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1570 {
1571     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1572
1573     if( p_owner->p_packetizer )
1574     {
1575         block_t *p_packetized_block;
1576         decoder_t *p_packetizer = p_owner->p_packetizer;
1577
1578         while( (p_packetized_block =
1579                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1580         {
1581             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1582             {
1583                 es_format_Clean( &p_dec->fmt_in );
1584                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1585             }
1586
1587             /* If the packetizer provides aspect ratio information, pass it
1588              * to the decoder as a hint if the decoder itself can't provide
1589              * it. Copy it regardless of the current value of the decoder input
1590              * format aspect ratio, to properly propagate changes in aspect
1591              * ratio. */
1592             if( p_packetizer->fmt_out.video.i_sar_num > 0 &&
1593                     p_packetizer->fmt_out.video.i_sar_den > 0)
1594             {
1595                 p_dec->fmt_in.video.i_sar_num =
1596                     p_packetizer->fmt_out.video.i_sar_num;
1597                 p_dec->fmt_in.video.i_sar_den=
1598                     p_packetizer->fmt_out.video.i_sar_den;
1599             }
1600
1601             if( p_packetizer->pf_get_cc )
1602                 DecoderGetCc( p_dec, p_packetizer );
1603
1604             while( p_packetized_block )
1605             {
1606                 block_t *p_next = p_packetized_block->p_next;
1607                 p_packetized_block->p_next = NULL;
1608
1609                 DecoderDecodeVideo( p_dec, p_packetized_block );
1610
1611                 p_packetized_block = p_next;
1612             }
1613         }
1614         /* The packetizer does not output a block that tell the decoder to flush
1615          * do it ourself */
1616         if( b_flush )
1617         {
1618             block_t *p_null = DecoderBlockFlushNew();
1619             if( p_null )
1620                 DecoderDecodeVideo( p_dec, p_null );
1621         }
1622     }
1623     else
1624     {
1625         DecoderDecodeVideo( p_dec, p_block );
1626     }
1627
1628     if( b_flush && p_owner->p_vout )
1629         vout_Flush( p_owner->p_vout, VLC_TS_INVALID+1 );
1630 }
1631
1632 /* This function process a audio block
1633  */
1634 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1635 {
1636     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1637
1638     if( p_owner->p_packetizer )
1639     {
1640         block_t *p_packetized_block;
1641         decoder_t *p_packetizer = p_owner->p_packetizer;
1642
1643         while( (p_packetized_block =
1644                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1645         {
1646             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1647             {
1648                 es_format_Clean( &p_dec->fmt_in );
1649                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1650             }
1651
1652             while( p_packetized_block )
1653             {
1654                 block_t *p_next = p_packetized_block->p_next;
1655                 p_packetized_block->p_next = NULL;
1656
1657                 DecoderDecodeAudio( p_dec, p_packetized_block );
1658
1659                 p_packetized_block = p_next;
1660             }
1661         }
1662         /* The packetizer does not output a block that tell the decoder to flush
1663          * do it ourself */
1664         if( b_flush )
1665         {
1666             block_t *p_null = DecoderBlockFlushNew();
1667             if( p_null )
1668                 DecoderDecodeAudio( p_dec, p_null );
1669         }
1670     }
1671     else
1672     {
1673         DecoderDecodeAudio( p_dec, p_block );
1674     }
1675
1676     if( b_flush && p_owner->p_aout )
1677         aout_DecFlush( p_owner->p_aout );
1678 }
1679
1680 /* This function process a subtitle block
1681  */
1682 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1683 {
1684     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1685
1686     input_thread_t *p_input = p_owner->p_input;
1687     vout_thread_t *p_vout;
1688     subpicture_t *p_spu;
1689
1690     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1691     {
1692         if( p_input != NULL )
1693         {
1694             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1695             stats_Update( p_input->p->counters.p_decoded_sub, 1, NULL );
1696             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1697         }
1698
1699         p_vout = input_resource_HoldVout( p_owner->p_resource );
1700         if( p_vout && p_owner->p_spu_vout == p_vout )
1701         {
1702             /* Preroll does not work very well with subtitle */
1703             if( p_spu->i_start > VLC_TS_INVALID &&
1704                 p_spu->i_start < p_owner->i_preroll_end &&
1705                 ( p_spu->i_stop <= VLC_TS_INVALID || p_spu->i_stop < p_owner->i_preroll_end ) )
1706             {
1707                 subpicture_Delete( p_spu );
1708             }
1709             else
1710             {
1711                 DecoderPlaySpu( p_dec, p_spu );
1712             }
1713         }
1714         else
1715         {
1716             subpicture_Delete( p_spu );
1717         }
1718         if( p_vout )
1719             vlc_object_release( p_vout );
1720     }
1721
1722     if( b_flush && p_owner->p_spu_vout )
1723     {
1724         p_vout = input_resource_HoldVout( p_owner->p_resource );
1725
1726         if( p_vout && p_owner->p_spu_vout == p_vout )
1727             vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1728
1729         if( p_vout )
1730             vlc_object_release( p_vout );
1731     }
1732 }
1733
1734 /* */
1735 static void DecoderProcessOnFlush( decoder_t *p_dec )
1736 {
1737     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1738
1739     vlc_mutex_lock( &p_owner->lock );
1740
1741     if( p_owner->b_flushing )
1742     {
1743         p_owner->b_flushing = false;
1744         vlc_cond_signal( &p_owner->wait_acknowledge );
1745     }
1746     vlc_mutex_unlock( &p_owner->lock );
1747 }
1748
1749 /**
1750  * Decode a block
1751  *
1752  * \param p_dec the decoder object
1753  * \param p_block the block to decode
1754  * \return VLC_SUCCESS or an error code
1755  */
1756 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1757 {
1758     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1759     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1760
1761     if( p_dec->b_error )
1762     {
1763         if( p_block )
1764             block_Release( p_block );
1765         goto flush;
1766     }
1767
1768     if( p_block && p_block->i_buffer <= 0 )
1769     {
1770         assert( !b_flush_request );
1771         block_Release( p_block );
1772         return;
1773     }
1774
1775 #ifdef ENABLE_SOUT
1776     if( p_owner->b_packetizer )
1777     {
1778         if( p_block )
1779             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1780
1781         DecoderProcessSout( p_dec, p_block );
1782     }
1783     else
1784 #endif
1785     {
1786         bool b_flush = false;
1787
1788         if( p_block )
1789         {
1790             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1791             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1792
1793             b_flush = !b_flushing && b_flush_request;
1794
1795             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1796         }
1797
1798         if( p_dec->fmt_out.i_cat == AUDIO_ES )
1799         {
1800             DecoderProcessAudio( p_dec, p_block, b_flush );
1801         }
1802         else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1803         {
1804             DecoderProcessVideo( p_dec, p_block, b_flush );
1805         }
1806         else if( p_dec->fmt_out.i_cat == SPU_ES )
1807         {
1808             DecoderProcessSpu( p_dec, p_block, b_flush );
1809         }
1810         else
1811         {
1812             msg_Err( p_dec, "unknown ES format" );
1813             p_dec->b_error = true;
1814         }
1815     }
1816
1817     /* */
1818 flush:
1819     if( b_flush_request )
1820         DecoderProcessOnFlush( p_dec );
1821 }
1822
1823 /**
1824  * Destroys a decoder object
1825  *
1826  * \param p_dec the decoder object
1827  * \return nothing
1828  */
1829 static void DeleteDecoder( decoder_t * p_dec )
1830 {
1831     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1832
1833     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1834              (char*)&p_dec->fmt_in.i_codec,
1835              (unsigned)block_FifoCount( p_owner->p_fifo ) );
1836
1837     /* Free all packets still in the decoder fifo. */
1838     block_FifoEmpty( p_owner->p_fifo );
1839     block_FifoRelease( p_owner->p_fifo );
1840
1841     /* Cleanup */
1842     if( p_owner->p_aout )
1843     {
1844         /* TODO: REVISIT gap-less audio */
1845         aout_DecFlush( p_owner->p_aout );
1846         aout_DecDelete( p_owner->p_aout );
1847         input_resource_PutAout( p_owner->p_resource, p_owner->p_aout );
1848         if( p_owner->p_input != NULL )
1849             input_SendEventAout( p_owner->p_input );
1850     }
1851     if( p_owner->p_vout )
1852     {
1853         /* Hack to make sure all the the pictures are freed by the decoder
1854          * and that the vout is not paused anymore */
1855         vout_Reset( p_owner->p_vout );
1856
1857         /* */
1858         input_resource_RequestVout( p_owner->p_resource, p_owner->p_vout, NULL,
1859                                     0, true );
1860         if( p_owner->p_input != NULL )
1861             input_SendEventVout( p_owner->p_input );
1862     }
1863
1864 #ifdef ENABLE_SOUT
1865     if( p_owner->p_sout_input )
1866     {
1867         sout_InputDelete( p_owner->p_sout_input );
1868         es_format_Clean( &p_owner->sout );
1869     }
1870 #endif
1871
1872     if( p_dec->fmt_out.i_cat == SPU_ES )
1873     {
1874         vout_thread_t *p_vout = input_resource_HoldVout( p_owner->p_resource );
1875         if( p_vout )
1876         {
1877             if( p_owner->p_spu_vout == p_vout )
1878                 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1879             vlc_object_release( p_vout );
1880         }
1881     }
1882
1883     es_format_Clean( &p_dec->fmt_in );
1884     es_format_Clean( &p_dec->fmt_out );
1885     if( p_dec->p_description )
1886         vlc_meta_Delete( p_dec->p_description );
1887     es_format_Clean( &p_owner->fmt_description );
1888     if( p_owner->p_description )
1889         vlc_meta_Delete( p_owner->p_description );
1890
1891     if( p_owner->p_packetizer )
1892     {
1893         module_unneed( p_owner->p_packetizer,
1894                        p_owner->p_packetizer->p_module );
1895         es_format_Clean( &p_owner->p_packetizer->fmt_in );
1896         es_format_Clean( &p_owner->p_packetizer->fmt_out );
1897         if( p_owner->p_packetizer->p_description )
1898             vlc_meta_Delete( p_owner->p_packetizer->p_description );
1899         vlc_object_release( p_owner->p_packetizer );
1900     }
1901
1902     vlc_cond_destroy( &p_owner->wait_acknowledge );
1903     vlc_cond_destroy( &p_owner->wait_request );
1904     vlc_mutex_destroy( &p_owner->lock );
1905
1906     vlc_object_release( p_dec );
1907
1908     free( p_owner );
1909 }
1910
1911 /*****************************************************************************
1912  * Buffers allocation callbacks for the decoders
1913  *****************************************************************************/
1914 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
1915 {
1916     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1917
1918     vlc_assert_locked( &p_owner->lock );
1919
1920     p_owner->b_fmt_description = true;
1921
1922     /* Copy es_format */
1923     es_format_Clean( &p_owner->fmt_description );
1924     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
1925
1926     /* Move p_description */
1927     if( p_owner->p_description && p_dec->p_description )
1928         vlc_meta_Delete( p_owner->p_description );
1929     p_owner->p_description = p_dec->p_description;
1930     p_dec->p_description = NULL;
1931 }
1932 static vout_thread_t *aout_request_vout( void *p_private,
1933                                          vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
1934 {
1935     decoder_t *p_dec = p_private;
1936     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1937     input_thread_t *p_input = p_owner->p_input;
1938
1939     p_vout = input_resource_RequestVout( p_owner->p_resource, p_vout, p_fmt, 1,
1940                                          b_recyle );
1941     if( p_input != NULL )
1942         input_SendEventVout( p_input );
1943
1944     return p_vout;
1945 }
1946
1947 static int aout_update_format( decoder_t *p_dec )
1948 {
1949     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1950
1951     if( p_owner->p_aout
1952      && !AOUT_FMTS_IDENTICAL(&p_dec->fmt_out.audio, &p_owner->audio) )
1953     {
1954         audio_output_t *p_aout = p_owner->p_aout;
1955
1956         /* Parameters changed, restart the aout */
1957         vlc_mutex_lock( &p_owner->lock );
1958
1959         aout_DecDelete( p_owner->p_aout );
1960         p_owner->p_aout = NULL;
1961
1962         vlc_mutex_unlock( &p_owner->lock );
1963         input_resource_PutAout( p_owner->p_resource, p_aout );
1964     }
1965
1966     if( p_owner->p_aout == NULL )
1967     {
1968         const int i_force_dolby = var_InheritInteger( p_dec, "force-dolby-surround" );
1969         audio_sample_format_t format;
1970         audio_output_t *p_aout;
1971         aout_request_vout_t request_vout;
1972
1973         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1974         p_owner->audio = p_dec->fmt_out.audio;
1975         aout_FormatPrepare( &p_owner->audio );
1976
1977         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
1978         if( i_force_dolby &&
1979             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
1980                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1981         {
1982             if( i_force_dolby == 1 )
1983             {
1984                 format.i_original_channels = format.i_original_channels |
1985                                              AOUT_CHAN_DOLBYSTEREO;
1986             }
1987             else /* i_force_dolby == 2 */
1988             {
1989                 format.i_original_channels = format.i_original_channels &
1990                                              ~AOUT_CHAN_DOLBYSTEREO;
1991             }
1992         }
1993
1994         request_vout.pf_request_vout = aout_request_vout;
1995         request_vout.p_private = p_dec;
1996
1997         assert( p_owner->p_aout == NULL );
1998         p_aout = input_resource_GetAout( p_owner->p_resource );
1999         if( p_aout )
2000         {
2001             if( aout_DecNew( p_aout, &format,
2002                              &p_dec->fmt_out.audio_replay_gain,
2003                              &request_vout ) )
2004             {
2005                 input_resource_PutAout( p_owner->p_resource, p_aout );
2006                 p_aout = NULL;
2007             }
2008         }
2009
2010         vlc_mutex_lock( &p_owner->lock );
2011
2012         p_owner->p_aout = p_aout;
2013         DecoderUpdateFormatLocked( p_dec );
2014         if( unlikely(p_owner->b_paused) ) /* fake pause if needed */
2015             aout_DecChangePause( p_aout, true, mdate() );
2016
2017         vlc_mutex_unlock( &p_owner->lock );
2018
2019         if( p_owner->p_input != NULL )
2020             input_SendEventAout( p_owner->p_input );
2021
2022         if( p_aout == NULL )
2023         {
2024             msg_Err( p_dec, "failed to create audio output" );
2025             p_dec->b_error = true;
2026             return -1;
2027         }
2028
2029         p_dec->fmt_out.audio.i_bytes_per_frame =
2030             p_owner->audio.i_bytes_per_frame;
2031         p_dec->fmt_out.audio.i_frame_length = p_owner->audio.i_frame_length;
2032     }
2033     return 0;
2034 }
2035
2036 static picture_t *vout_new_buffer( decoder_t *p_dec )
2037 {
2038     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2039
2040     if( p_owner->p_vout == NULL ||
2041         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2042         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2043         p_dec->fmt_out.video.i_visible_width != p_owner->video.i_visible_width ||
2044         p_dec->fmt_out.video.i_visible_height != p_owner->video.i_visible_height ||
2045         p_dec->fmt_out.video.i_x_offset != p_owner->video.i_x_offset  ||
2046         p_dec->fmt_out.video.i_y_offset != p_owner->video.i_y_offset  ||
2047         p_dec->fmt_out.i_codec != p_owner->video.i_chroma ||
2048         (int64_t)p_dec->fmt_out.video.i_sar_num * p_owner->video.i_sar_den !=
2049         (int64_t)p_dec->fmt_out.video.i_sar_den * p_owner->video.i_sar_num ||
2050         p_dec->fmt_out.video.orientation != p_owner->video.orientation )
2051     {
2052         vout_thread_t *p_vout;
2053
2054         if( !p_dec->fmt_out.video.i_width ||
2055             !p_dec->fmt_out.video.i_height )
2056         {
2057             /* Can't create a new vout without display size */
2058             return NULL;
2059         }
2060
2061         video_format_t fmt = p_dec->fmt_out.video;
2062         fmt.i_chroma = p_dec->fmt_out.i_codec;
2063         p_owner->video = fmt;
2064
2065         if( vlc_fourcc_IsYUV( fmt.i_chroma ) )
2066         {
2067             const vlc_chroma_description_t *dsc = vlc_fourcc_GetChromaDescription( fmt.i_chroma );
2068             for( unsigned int i = 0; dsc && i < dsc->plane_count; i++ )
2069             {
2070                 while( fmt.i_width % dsc->p[i].w.den )
2071                     fmt.i_width++;
2072                 while( fmt.i_height % dsc->p[i].h.den )
2073                     fmt.i_height++;
2074             }
2075         }
2076
2077         if( !fmt.i_visible_width || !fmt.i_visible_height )
2078         {
2079             if( p_dec->fmt_in.video.i_visible_width &&
2080                 p_dec->fmt_in.video.i_visible_height )
2081             {
2082                 fmt.i_visible_width  = p_dec->fmt_in.video.i_visible_width;
2083                 fmt.i_visible_height = p_dec->fmt_in.video.i_visible_height;
2084                 fmt.i_x_offset       = p_dec->fmt_in.video.i_x_offset;
2085                 fmt.i_y_offset       = p_dec->fmt_in.video.i_y_offset;
2086             }
2087             else
2088             {
2089                 fmt.i_visible_width  = fmt.i_width;
2090                 fmt.i_visible_height = fmt.i_height;
2091                 fmt.i_x_offset       = 0;
2092                 fmt.i_y_offset       = 0;
2093             }
2094         }
2095
2096         if( fmt.i_visible_height == 1088 &&
2097             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2098         {
2099             fmt.i_visible_height = 1080;
2100             if( !(fmt.i_sar_num % 136))
2101             {
2102                 fmt.i_sar_num *= 135;
2103                 fmt.i_sar_den *= 136;
2104             }
2105             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2106         }
2107
2108         if( !fmt.i_sar_num || !fmt.i_sar_den )
2109         {
2110             fmt.i_sar_num = 1;
2111             fmt.i_sar_den = 1;
2112         }
2113
2114         vlc_ureduce( &fmt.i_sar_num, &fmt.i_sar_den,
2115                      fmt.i_sar_num, fmt.i_sar_den, 50000 );
2116
2117         vlc_mutex_lock( &p_owner->lock );
2118
2119         p_vout = p_owner->p_vout;
2120         p_owner->p_vout = NULL;
2121         vlc_mutex_unlock( &p_owner->lock );
2122
2123         unsigned dpb_size;
2124         switch( p_dec->fmt_in.i_codec )
2125         {
2126         case VLC_CODEC_HEVC:
2127         case VLC_CODEC_H264:
2128         case VLC_CODEC_DIRAC: /* FIXME valid ? */
2129             dpb_size = 18;
2130             break;
2131         case VLC_CODEC_VP5:
2132         case VLC_CODEC_VP6:
2133         case VLC_CODEC_VP6F:
2134         case VLC_CODEC_VP8:
2135             dpb_size = 3;
2136             break;
2137         default:
2138             dpb_size = 2;
2139             break;
2140         }
2141         p_vout = input_resource_RequestVout( p_owner->p_resource,
2142                                              p_vout, &fmt,
2143                                              dpb_size +
2144                                              p_dec->i_extra_picture_buffers + 1,
2145                                              true );
2146         vlc_mutex_lock( &p_owner->lock );
2147         p_owner->p_vout = p_vout;
2148
2149         DecoderUpdateFormatLocked( p_dec );
2150
2151         vlc_mutex_unlock( &p_owner->lock );
2152
2153         if( p_owner->p_input != NULL )
2154             input_SendEventVout( p_owner->p_input );
2155         if( p_vout == NULL )
2156         {
2157             msg_Err( p_dec, "failed to create video output" );
2158             p_dec->b_error = true;
2159             return NULL;
2160         }
2161     }
2162
2163     /* Get a new picture
2164      */
2165     for( ;; )
2166     {
2167         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2168             return NULL;
2169
2170         picture_t *p_picture = vout_GetPicture( p_owner->p_vout );
2171         if( p_picture )
2172             return p_picture;
2173
2174         if( DecoderIsFlushing( p_dec ) )
2175             return NULL;
2176
2177         /* */
2178         DecoderSignalWait( p_dec, true );
2179
2180         /* Check the decoder doesn't leak pictures */
2181         vout_FixLeaks( p_owner->p_vout );
2182
2183         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2184         msleep( VOUT_OUTMEM_SLEEP );
2185     }
2186 }
2187
2188 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2189 {
2190     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2191 }
2192
2193 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2194 {
2195     vout_HoldPicture( p_dec->p_owner->p_vout, p_pic );
2196 }
2197
2198 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2199 {
2200     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2201 }
2202
2203 static subpicture_t *spu_new_buffer( decoder_t *p_dec,
2204                                      const subpicture_updater_t *p_updater )
2205 {
2206     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2207     vout_thread_t *p_vout = NULL;
2208     subpicture_t *p_subpic;
2209     int i_attempts = 30;
2210
2211     while( i_attempts-- )
2212     {
2213         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2214             break;
2215
2216         p_vout = input_resource_HoldVout( p_owner->p_resource );
2217         if( p_vout )
2218             break;
2219
2220         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2221     }
2222
2223     if( !p_vout )
2224     {
2225         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2226         return NULL;
2227     }
2228
2229     if( p_owner->p_spu_vout != p_vout )
2230     {
2231         p_owner->i_spu_channel = vout_RegisterSubpictureChannel( p_vout );
2232         p_owner->i_spu_order = 0;
2233         p_owner->p_spu_vout = p_vout;
2234     }
2235
2236     p_subpic = subpicture_New( p_updater );
2237     if( p_subpic )
2238     {
2239         p_subpic->i_channel = p_owner->i_spu_channel;
2240         p_subpic->i_order = p_owner->i_spu_order++;
2241         p_subpic->b_subtitle = true;
2242     }
2243
2244     vlc_object_release( p_vout );
2245
2246     return p_subpic;
2247 }
2248
2249 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2250 {
2251     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2252     vout_thread_t *p_vout = NULL;
2253
2254     p_vout = input_resource_HoldVout( p_owner->p_resource );
2255     if( !p_vout || p_owner->p_spu_vout != p_vout )
2256     {
2257         if( p_vout )
2258             vlc_object_release( p_vout );
2259         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2260         return;
2261     }
2262
2263     subpicture_Delete( p_subpic );
2264
2265     vlc_object_release( p_vout );
2266 }