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