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

   1 /*****************************************************************************
   2  * decoder.c: Functions for the management of decoders
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *          Laurent Aimar <fenrir@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU Lesser General Public License as published by
  13  * the Free Software Foundation; either version 2.1 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public License
  22  * along with this program; if not, write to the Free Software Foundation,
  23  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32 #include <assert.h>
  33
  34 #include <vlc_common.h>
  35
  36 #include <vlc_block.h>
  37 #include <vlc_vout.h>
  38 #include <vlc_aout.h>
  39 #include <vlc_sout.h>
  40 #include <vlc_codec.h>
  41 #include <vlc_spu.h>
  42 #include <vlc_meta.h>
  43 #include <vlc_dialog.h>
  44 #include <vlc_modules.h>
  45
  46 #include "audio_output/aout_internal.h"
  47 #include "stream_output/stream_output.h"
  48 #include "input_internal.h"
  49 #include "clock.h"
  50 #include "decoder.h"
  51 #include "event.h"
  52 #include "resource.h"
  53
  54 #include "../video_output/vout_control.h"
  55
  56 static decoder_t *CreateDecoder( vlc_object_t *, input_thread_t *,
  57                                  es_format_t *, bool, input_resource_t *,
  58                                  sout_instance_t *p_sout );
  59 static void       DeleteDecoder( decoder_t * );
  60
  61 static void      *DecoderThread( void * );
  62 static void       DecoderProcess( decoder_t *, block_t * );
  63 static void       DecoderError( decoder_t *p_dec, block_t *p_block );
  64 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  65 static void       DecoderFlush( decoder_t * );
  66 static void       DecoderSignalBuffering( decoder_t *, bool );
  67 static void       DecoderFlushBuffering( decoder_t * );
  68
  69 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  70
  71 /* Buffers allocation callbacks for the decoders */
  72 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  73
  74 static picture_t *vout_new_buffer( decoder_t * );
  75 static void vout_del_buffer( decoder_t *, picture_t * );
  76 static void vout_link_picture( decoder_t *, picture_t * );
  77 static void vout_unlink_picture( decoder_t *, picture_t * );
  78
  79 static subpicture_t *spu_new_buffer( decoder_t *, const subpicture_updater_t * );
  80 static void spu_del_buffer( decoder_t *, subpicture_t * );
  81
  82 struct decoder_owner_sys_t
  83 {
  84     int64_t         i_preroll_end;
  85
  86     input_thread_t  *p_input;
  87     input_resource_t*p_resource;
  88     input_clock_t   *p_clock;
  89     int             i_last_rate;
  90
  91     vout_thread_t   *p_spu_vout;
  92     int              i_spu_channel;
  93     int64_t          i_spu_order;
  94
  95     sout_instance_t         *p_sout;
  96     sout_packetizer_input_t *p_sout_input;
  97
  98     vlc_thread_t     thread;
  99
 100     /* Some decoders require already packetized data (ie. not truncated) */
 101     decoder_t *p_packetizer;
 102     bool b_packetizer;
 103
 104     /* Current format in use by the output */
 105     video_format_t video;
 106     audio_format_t audio;
 107     es_format_t    sout;
 108
 109     /* */
 110     bool           b_fmt_description;
 111     es_format_t    fmt_description;
 112     vlc_meta_t     *p_description;
 113
 114     /* fifo */
 115     block_fifo_t *p_fifo;
 116
 117     /* Lock for communication with decoder thread */
 118     vlc_mutex_t lock;
 119     vlc_cond_t  wait_request;
 120     vlc_cond_t  wait_acknowledge;
 121
 122     /* -- These variables need locking on write(only) -- */
 123     audio_output_t *p_aout;
 124
 125     vout_thread_t   *p_vout;
 126
 127     /* -- Theses variables need locking on read *and* write -- */
 128     bool b_exit;
 129
 130     /* Pause */
 131     bool b_paused;
 132     struct
 133     {
 134         mtime_t i_date;
 135         int     i_ignore;
 136     } pause;
 137
 138     /* Buffering */
 139     bool b_buffering;
 140     struct
 141     {
 142         bool b_first;
 143         bool b_full;
 144         int  i_count;
 145
 146         picture_t     *p_picture;
 147         picture_t     **pp_picture_next;
 148
 149         subpicture_t  *p_subpic;
 150         subpicture_t  **pp_subpic_next;
 151
 152         aout_buffer_t *p_audio;
 153         aout_buffer_t **pp_audio_next;
 154
 155         block_t       *p_block;
 156         block_t       **pp_block_next;
 157     } buffer;
 158
 159     /* Flushing */
 160     bool b_flushing;
 161
 162     /* CC */
 163     struct
 164     {
 165         bool b_supported;
 166         bool pb_present[4];
 167         decoder_t *pp_decoder[4];
 168     } cc;
 169
 170     /* Delay */
 171     mtime_t i_ts_delay;
 172 };
 173
 174 #define DECODER_MAX_BUFFERING_COUNT (4)
 175 #define DECODER_MAX_BUFFERING_AUDIO_DURATION (AOUT_MAX_PREPARE_TIME)
 176 #define DECODER_MAX_BUFFERING_VIDEO_DURATION (1*CLOCK_FREQ)
 177
 178 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 179  * a bogus PTS and won't be displayed */
 180 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 181
 182 /* */
 183 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 184
 185
 186 /*****************************************************************************
 187  * Public functions
 188  *****************************************************************************/
 189 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 190 {
 191     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 192     if( !p_picture )
 193         msg_Warn( p_decoder, "can't get output picture" );
 194     return p_picture;
 195 }
 196 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 197 {
 198     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 199 }
 200 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 201 {
 202     p_decoder->pf_picture_link( p_decoder, p_picture );
 203 }
 204 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 205 {
 206     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 207 }
 208
 209 aout_buffer_t *decoder_NewAudioBuffer( decoder_t *p_decoder, int i_size )
 210 {
 211     if( !p_decoder->pf_aout_buffer_new )
 212         return NULL;
 213     return p_decoder->pf_aout_buffer_new( p_decoder, i_size );
 214 }
 215
 216 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder,
 217                                      const subpicture_updater_t *p_dyn )
 218 {
 219     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder, p_dyn );
 220     if( !p_subpicture )
 221         msg_Warn( p_decoder, "can't get output subpicture" );
 222     return p_subpicture;
 223 }
 224
 225 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 226 {
 227     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 228 }
 229
 230 /* decoder_GetInputAttachments:
 231  */
 232 int decoder_GetInputAttachments( decoder_t *p_dec,
 233                                  input_attachment_t ***ppp_attachment,
 234                                  int *pi_attachment )
 235 {
 236     if( !p_dec->pf_get_attachments )
 237         return VLC_EGENERIC;
 238
 239     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 240 }
 241 /* decoder_GetDisplayDate:
 242  */
 243 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 244 {
 245     if( !p_dec->pf_get_display_date )
 246         return VLC_TS_INVALID;
 247
 248     return p_dec->pf_get_display_date( p_dec, i_ts );
 249 }
 250 /* decoder_GetDisplayRate:
 251  */
 252 int decoder_GetDisplayRate( decoder_t *p_dec )
 253 {
 254     if( !p_dec->pf_get_display_rate )
 255         return INPUT_RATE_DEFAULT;
 256
 257     return p_dec->pf_get_display_rate( p_dec );
 258 }
 259
 260 /* TODO: pass p_sout through p_resource? -- Courmisch */
 261 static decoder_t *decoder_New( vlc_object_t *p_parent, input_thread_t *p_input,
 262                                es_format_t *fmt, input_clock_t *p_clock,
 263                                input_resource_t *p_resource,
 264                                sout_instance_t *p_sout  )
 265 {
 266     decoder_t *p_dec = NULL;
 267     const char *psz_type = p_sout ? N_("packetizer") : N_("decoder");
 268     int i_priority;
 269
 270     /* Create the decoder configuration structure */
 271     p_dec = CreateDecoder( p_parent, p_input, fmt,
 272                            p_sout != NULL, p_resource, p_sout );
 273     if( p_dec == NULL )
 274     {
 275         msg_Err( p_parent, "could not create %s", psz_type );
 276         dialog_Fatal( p_parent, _("Streaming / Transcoding failed"),
 277                       _("VLC could not open the %s module."),
 278                       vlc_gettext( psz_type ) );
 279         return NULL;
 280     }
 281
 282     if( !p_dec->p_module )
 283     {
 284         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 285
 286         DeleteDecoder( p_dec );
 287         return NULL;
 288     }
 289
 290     p_dec->p_owner->p_clock = p_clock;
 291     assert( p_dec->fmt_out.i_cat != UNKNOWN_ES );
 292
 293     if( p_dec->fmt_out.i_cat == AUDIO_ES )
 294         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 295     else
 296         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 297
 298     /* Spawn the decoder thread */
 299     if( vlc_clone( &p_dec->p_owner->thread, DecoderThread, p_dec, i_priority ) )
 300     {
 301         msg_Err( p_dec, "cannot spawn decoder thread" );
 302         module_unneed( p_dec, p_dec->p_module );
 303         DeleteDecoder( p_dec );
 304         return NULL;
 305     }
 306
 307     return p_dec;
 308 }
 309
 310
 311 /**
 312  * Spawns a new decoder thread from the input thread
 313  *
 314  * \param p_input the input thread
 315  * \param p_es the es descriptor
 316  * \return the spawned decoder object
 317  */
 318 decoder_t *input_DecoderNew( input_thread_t *p_input,
 319                              es_format_t *fmt, input_clock_t *p_clock,
 320                              sout_instance_t *p_sout  )
 321 {
 322     return decoder_New( VLC_OBJECT(p_input), p_input, fmt, p_clock,
 323                         p_input->p->p_resource, p_sout );
 324 }
 325
 326 /**
 327  * Spawn a decoder thread outside of the input thread.
 328  */
 329 decoder_t *input_DecoderCreate( vlc_object_t *p_parent, es_format_t *fmt,
 330                                 input_resource_t *p_resource )
 331 {
 332     return decoder_New( p_parent, NULL, fmt, NULL, p_resource, NULL );
 333 }
 334
 335
 336 /**
 337  * Kills a decoder thread and waits until it's finished
 338  *
 339  * \param p_input the input thread
 340  * \param p_es the es descriptor
 341  * \return nothing
 342  */
 343 void input_DecoderDelete( decoder_t *p_dec )
 344 {
 345     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 346
 347     vlc_cancel( p_owner->thread );
 348
 349     /* Make sure we aren't paused/buffering/waiting/decoding anymore */
 350     vlc_mutex_lock( &p_owner->lock );
 351     const bool b_was_paused = p_owner->b_paused;
 352     p_owner->b_paused = false;
 353     p_owner->b_buffering = false;
 354     p_owner->b_flushing = true;
 355     p_owner->b_exit = true;
 356     vlc_cond_signal( &p_owner->wait_request );
 357     vlc_mutex_unlock( &p_owner->lock );
 358
 359     vlc_join( p_owner->thread, NULL );
 360     p_owner->b_paused = b_was_paused;
 361
 362     module_unneed( p_dec, p_dec->p_module );
 363
 364     /* */
 365     if( p_dec->p_owner->cc.b_supported )
 366     {
 367         int i;
 368         for( i = 0; i < 4; i++ )
 369             input_DecoderSetCcState( p_dec, false, i );
 370     }
 371
 372     /* Delete decoder */
 373     DeleteDecoder( p_dec );
 374 }
 375
 376 /**
 377  * Put a block_t in the decoder's fifo.
 378  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 379  *
 380  * \param p_dec the decoder object
 381  * \param p_block the data block
 382  */
 383 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block, bool b_do_pace )
 384 {
 385     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 386
 387     if( b_do_pace )
 388     {
 389         /* The fifo is not consummed when buffering and so will
 390          * deadlock vlc.
 391          * There is no need to lock as b_buffering is never modify
 392          * inside decoder thread. */
 393         if( !p_owner->b_buffering )
 394             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 395     }
 396 #ifdef __arm__
 397     else if( block_FifoSize( p_owner->p_fifo ) > 50*1024*1024 /* 50 MiB */ )
 398 #else
 399     else if( block_FifoSize( p_owner->p_fifo ) > 400*1024*1024 /* 400 MiB, ie ~ 50mb/s for 60s */ )
 400 #endif
 401     {
 402         /* FIXME: ideally we would check the time amount of data
 403          * in the FIFO instead of its size. */
 404         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 405                   "consumed quickly enough), resetting fifo!" );
 406         block_FifoEmpty( p_owner->p_fifo );
 407     }
 408
 409     block_FifoPut( p_owner->p_fifo, p_block );
 410 }
 411
 412 bool input_DecoderIsEmpty( decoder_t * p_dec )
 413 {
 414     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 415     assert( !p_owner->b_buffering );
 416
 417     bool b_empty = block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 418     if( b_empty )
 419     {
 420         vlc_mutex_lock( &p_owner->lock );
 421         /* TODO subtitles support */
 422         if( p_dec->fmt_out.i_cat == VIDEO_ES && p_owner->p_vout )
 423             b_empty = vout_IsEmpty( p_owner->p_vout );
 424         else if( p_dec->fmt_out.i_cat == AUDIO_ES && p_owner->p_aout )
 425             b_empty = aout_DecIsEmpty( p_owner->p_aout );
 426         vlc_mutex_unlock( &p_owner->lock );
 427     }
 428     return b_empty;
 429 }
 430
 431 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 432 {
 433     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 434     int i;
 435
 436     vlc_mutex_lock( &p_owner->lock );
 437     for( i = 0; i < 4; i++ )
 438         pb_present[i] =  p_owner->cc.pb_present[i];
 439     vlc_mutex_unlock( &p_owner->lock );
 440 }
 441 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 442 {
 443     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 444
 445     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 446
 447     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 448         return VLC_EGENERIC;
 449
 450     if( b_decode )
 451     {
 452         static const vlc_fourcc_t fcc[4] = {
 453             VLC_FOURCC('c', 'c', '1', ' '),
 454             VLC_FOURCC('c', 'c', '2', ' '),
 455             VLC_FOURCC('c', 'c', '3', ' '),
 456             VLC_FOURCC('c', 'c', '4', ' '),
 457         };
 458         decoder_t *p_cc;
 459         es_format_t fmt;
 460
 461         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 462         p_cc = CreateDecoder( VLC_OBJECT(p_dec), p_owner->p_input, &fmt,
 463                               false, p_owner->p_resource, p_owner->p_sout );
 464         if( !p_cc )
 465         {
 466             msg_Err( p_dec, "could not create decoder" );
 467             dialog_Fatal( p_dec, _("Streaming / Transcoding failed"), "%s",
 468                           _("VLC could not open the decoder module.") );
 469             return VLC_EGENERIC;
 470         }
 471         else if( !p_cc->p_module )
 472         {
 473             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 474             DeleteDecoder( p_cc );
 475             return VLC_EGENERIC;
 476         }
 477         p_cc->p_owner->p_clock = p_owner->p_clock;
 478
 479         vlc_mutex_lock( &p_owner->lock );
 480         p_owner->cc.pp_decoder[i_channel] = p_cc;
 481         vlc_mutex_unlock( &p_owner->lock );
 482     }
 483     else
 484     {
 485         decoder_t *p_cc;
 486
 487         vlc_mutex_lock( &p_owner->lock );
 488         p_cc = p_owner->cc.pp_decoder[i_channel];
 489         p_owner->cc.pp_decoder[i_channel] = NULL;
 490         vlc_mutex_unlock( &p_owner->lock );
 491
 492         if( p_cc )
 493         {
 494             module_unneed( p_cc, p_cc->p_module );
 495             DeleteDecoder( p_cc );
 496         }
 497     }
 498     return VLC_SUCCESS;
 499 }
 500 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 501 {
 502     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 503
 504     *pb_decode = false;
 505     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 506         return VLC_EGENERIC;
 507
 508     vlc_mutex_lock( &p_owner->lock );
 509     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 510     vlc_mutex_unlock( &p_owner->lock );
 511     return VLC_EGENERIC;
 512 }
 513
 514 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 515 {
 516     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 517
 518     vlc_mutex_lock( &p_owner->lock );
 519
 520     assert( !p_owner->b_paused || !b_paused );
 521
 522     p_owner->b_paused = b_paused;
 523     p_owner->pause.i_date = i_date;
 524     p_owner->pause.i_ignore = 0;
 525     vlc_cond_signal( &p_owner->wait_request );
 526
 527     DecoderOutputChangePause( p_dec, b_paused, i_date );
 528
 529     vlc_mutex_unlock( &p_owner->lock );
 530 }
 531
 532 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 533 {
 534     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 535
 536     vlc_mutex_lock( &p_owner->lock );
 537     p_owner->i_ts_delay = i_delay;
 538     vlc_mutex_unlock( &p_owner->lock );
 539 }
 540
 541 void input_DecoderStartBuffering( decoder_t *p_dec )
 542 {
 543     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 544
 545     vlc_mutex_lock( &p_owner->lock );
 546
 547     DecoderFlush( p_dec );
 548
 549     p_owner->buffer.b_first = true;
 550     p_owner->buffer.b_full = false;
 551     p_owner->buffer.i_count = 0;
 552
 553     assert( !p_owner->buffer.p_picture && !p_owner->buffer.p_subpic &&
 554             !p_owner->buffer.p_audio && !p_owner->buffer.p_block );
 555
 556     p_owner->buffer.p_picture = NULL;
 557     p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
 558
 559     p_owner->buffer.p_subpic = NULL;
 560     p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
 561
 562     p_owner->buffer.p_audio = NULL;
 563     p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
 564
 565     p_owner->buffer.p_block = NULL;
 566     p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
 567
 568
 569     p_owner->b_buffering = true;
 570
 571     vlc_cond_signal( &p_owner->wait_request );
 572
 573     vlc_mutex_unlock( &p_owner->lock );
 574 }
 575
 576 void input_DecoderStopBuffering( decoder_t *p_dec )
 577 {
 578     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 579
 580     vlc_mutex_lock( &p_owner->lock );
 581
 582     p_owner->b_buffering = false;
 583
 584     vlc_cond_signal( &p_owner->wait_request );
 585
 586     vlc_mutex_unlock( &p_owner->lock );
 587 }
 588
 589 void input_DecoderWaitBuffering( decoder_t *p_dec )
 590 {
 591     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 592
 593     vlc_mutex_lock( &p_owner->lock );
 594
 595     while( p_owner->b_buffering && !p_owner->buffer.b_full )
 596     {
 597         block_FifoWake( p_owner->p_fifo );
 598         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
 599     }
 600
 601     vlc_mutex_unlock( &p_owner->lock );
 602 }
 603
 604 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 605 {
 606     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 607
 608     *pi_duration = 0;
 609
 610     vlc_mutex_lock( &p_owner->lock );
 611     if( p_dec->fmt_out.i_cat == VIDEO_ES )
 612     {
 613         if( p_owner->b_paused && p_owner->p_vout )
 614         {
 615             vout_NextPicture( p_owner->p_vout, pi_duration );
 616             p_owner->pause.i_ignore++;
 617             vlc_cond_signal( &p_owner->wait_request );
 618         }
 619     }
 620     else
 621     {
 622         /* TODO subtitle should not be flushed */
 623         DecoderFlush( p_dec );
 624     }
 625     vlc_mutex_unlock( &p_owner->lock );
 626 }
 627
 628 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
 629 {
 630     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 631     bool b_changed;
 632
 633     vlc_mutex_lock( &p_owner->lock );
 634     b_changed = p_owner->b_fmt_description;
 635     if( b_changed )
 636     {
 637         if( p_fmt )
 638             es_format_Copy( p_fmt, &p_owner->fmt_description );
 639
 640         if( pp_meta )
 641         {
 642             *pp_meta = NULL;
 643             if( p_owner->p_description )
 644             {
 645                 *pp_meta = vlc_meta_New();
 646                 if( *pp_meta )
 647                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
 648             }
 649         }
 650         p_owner->b_fmt_description = false;
 651     }
 652     vlc_mutex_unlock( &p_owner->lock );
 653     return b_changed;
 654 }
 655
 656 size_t input_DecoderGetFifoSize( decoder_t *p_dec )
 657 {
 658     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 659
 660     return block_FifoSize( p_owner->p_fifo );
 661 }
 662
 663 void input_DecoderGetObjects( decoder_t *p_dec,
 664                               vout_thread_t **pp_vout, audio_output_t **pp_aout )
 665 {
 666     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 667
 668     vlc_mutex_lock( &p_owner->lock );
 669     if( pp_vout )
 670         *pp_vout = p_owner->p_vout ? vlc_object_hold( p_owner->p_vout ) : NULL;
 671     if( pp_aout )
 672         *pp_aout = p_owner->p_aout ? vlc_object_hold( p_owner->p_aout ) : NULL;
 673     vlc_mutex_unlock( &p_owner->lock );
 674 }
 675
 676 /*****************************************************************************
 677  * Internal functions
 678  *****************************************************************************/
 679 static int DecoderGetInputAttachments( decoder_t *p_dec,
 680                                        input_attachment_t ***ppp_attachment,
 681                                        int *pi_attachment )
 682 {
 683     input_thread_t *p_input = p_dec->p_owner->p_input;
 684
 685     if( unlikely(p_input == NULL) )
 686         return VLC_ENOOBJ;
 687     return input_Control( p_input, INPUT_GET_ATTACHMENTS,
 688                           ppp_attachment, pi_attachment );
 689 }
 690 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 691 {
 692     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 693
 694     vlc_mutex_lock( &p_owner->lock );
 695     if( p_owner->b_buffering || p_owner->b_paused )
 696         i_ts = VLC_TS_INVALID;
 697     vlc_mutex_unlock( &p_owner->lock );
 698
 699     if( !p_owner->p_clock || i_ts <= VLC_TS_INVALID )
 700         return i_ts;
 701
 702     if( input_clock_ConvertTS( p_owner->p_clock, NULL, &i_ts, NULL, INT64_MAX ) )
 703         return VLC_TS_INVALID;
 704
 705     return i_ts;
 706 }
 707 static int DecoderGetDisplayRate( decoder_t *p_dec )
 708 {
 709     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 710
 711     if( !p_owner->p_clock )
 712         return INPUT_RATE_DEFAULT;
 713     return input_clock_GetRate( p_owner->p_clock );
 714 }
 715
 716 /* */
 717 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 718 {
 719     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'. "
 720              "VLC probably does not support this sound or video format.",
 721              (char*)&codec );
 722     dialog_Fatal( p_dec, _("No suitable decoder module"),
 723                  _("VLC does not support the audio or video format \"%4.4s\". "
 724                   "Unfortunately there is no way for you to fix this."),
 725                   (char*)&codec );
 726 }
 727
 728
 729 /**
 730  * Create a decoder object
 731  *
 732  * \param p_input the input thread
 733  * \param p_es the es descriptor
 734  * \param b_packetizer instead of a decoder
 735  * \return the decoder object
 736  */
 737 static decoder_t * CreateDecoder( vlc_object_t *p_parent,
 738                                   input_thread_t *p_input,
 739                                   es_format_t *fmt, bool b_packetizer,
 740                                   input_resource_t *p_resource,
 741                                   sout_instance_t *p_sout )
 742 {
 743     decoder_t *p_dec;
 744     decoder_owner_sys_t *p_owner;
 745     es_format_t null_es_format;
 746
 747     p_dec = vlc_custom_create( p_parent, sizeof( *p_dec ), "decoder" );
 748     if( p_dec == NULL )
 749         return NULL;
 750
 751     p_dec->pf_decode_audio = NULL;
 752     p_dec->pf_decode_video = NULL;
 753     p_dec->pf_decode_sub = NULL;
 754     p_dec->pf_get_cc = NULL;
 755     p_dec->pf_packetize = NULL;
 756
 757     /* Initialize the decoder */
 758     p_dec->p_module = NULL;
 759
 760     memset( &null_es_format, 0, sizeof(es_format_t) );
 761     es_format_Copy( &p_dec->fmt_in, fmt );
 762     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 763
 764     p_dec->p_description = NULL;
 765
 766     /* Allocate our private structure for the decoder */
 767     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 768     if( unlikely(p_owner == NULL) )
 769     {
 770         vlc_object_release( p_dec );
 771         return NULL;
 772     }
 773     p_owner->i_preroll_end = VLC_TS_INVALID;
 774     p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 775     p_owner->p_input = p_input;
 776     p_owner->p_resource = p_resource;
 777     p_owner->p_aout = NULL;
 778     p_owner->p_vout = NULL;
 779     p_owner->p_spu_vout = NULL;
 780     p_owner->i_spu_channel = 0;
 781     p_owner->i_spu_order = 0;
 782     p_owner->p_sout = p_sout;
 783     p_owner->p_sout_input = NULL;
 784     p_owner->p_packetizer = NULL;
 785     p_owner->b_packetizer = b_packetizer;
 786
 787     /* decoder fifo */
 788     p_owner->p_fifo = block_FifoNew();
 789     if( unlikely(p_owner->p_fifo == NULL) )
 790     {
 791         free( p_owner );
 792         vlc_object_release( p_dec );
 793         return NULL;
 794     }
 795
 796     /* Set buffers allocation callbacks for the decoders */
 797     p_dec->pf_aout_buffer_new = aout_new_buffer;
 798     p_dec->pf_vout_buffer_new = vout_new_buffer;
 799     p_dec->pf_vout_buffer_del = vout_del_buffer;
 800     p_dec->pf_picture_link    = vout_link_picture;
 801     p_dec->pf_picture_unlink  = vout_unlink_picture;
 802     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 803     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 804     /* */
 805     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 806     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 807     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 808
 809     /* Find a suitable decoder/packetizer module */
 810     if( !b_packetizer )
 811         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
 812     else
 813         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
 814
 815     /* Check if decoder requires already packetized data */
 816     if( !b_packetizer &&
 817         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 818     {
 819         p_owner->p_packetizer =
 820             vlc_custom_create( p_parent, sizeof( decoder_t ), "packetizer" );
 821         if( p_owner->p_packetizer )
 822         {
 823             es_format_Copy( &p_owner->p_packetizer->fmt_in,
 824                             &p_dec->fmt_in );
 825
 826             es_format_Copy( &p_owner->p_packetizer->fmt_out,
 827                             &null_es_format );
 828
 829             p_owner->p_packetizer->p_module =
 830                 module_need( p_owner->p_packetizer,
 831                              "packetizer", "$packetizer", false );
 832
 833             if( !p_owner->p_packetizer->p_module )
 834             {
 835                 es_format_Clean( &p_owner->p_packetizer->fmt_in );
 836                 vlc_object_release( p_owner->p_packetizer );
 837             }
 838         }
 839     }
 840
 841     /* Copy ourself the input replay gain */
 842     if( fmt->i_cat == AUDIO_ES )
 843     {
 844         for( unsigned i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 845         {
 846             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 847             {
 848                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 849                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 850             }
 851             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 852             {
 853                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 854                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 855             }
 856         }
 857     }
 858
 859     /* */
 860     vlc_mutex_init( &p_owner->lock );
 861     vlc_cond_init( &p_owner->wait_request );
 862     vlc_cond_init( &p_owner->wait_acknowledge );
 863
 864     p_owner->b_fmt_description = false;
 865     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 866     p_owner->p_description = NULL;
 867
 868     p_owner->b_exit = false;
 869
 870     p_owner->b_paused = false;
 871     p_owner->pause.i_date = VLC_TS_INVALID;
 872     p_owner->pause.i_ignore = 0;
 873
 874     p_owner->b_buffering = false;
 875     p_owner->buffer.b_first = true;
 876     p_owner->buffer.b_full = false;
 877     p_owner->buffer.i_count = 0;
 878     p_owner->buffer.p_picture = NULL;
 879     p_owner->buffer.p_subpic = NULL;
 880     p_owner->buffer.p_audio = NULL;
 881     p_owner->buffer.p_block = NULL;
 882
 883     p_owner->b_flushing = false;
 884
 885     /* */
 886     p_owner->cc.b_supported = false;
 887     if( !b_packetizer )
 888     {
 889         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 890             p_owner->cc.b_supported = true;
 891         if( p_dec->pf_get_cc )
 892             p_owner->cc.b_supported = true;
 893     }
 894
 895     for( unsigned i = 0; i < 4; i++ )
 896     {
 897         p_owner->cc.pb_present[i] = false;
 898         p_owner->cc.pp_decoder[i] = NULL;
 899     }
 900     p_owner->i_ts_delay = 0;
 901     return p_dec;
 902 }
 903
 904 /**
 905  * The decoding main loop
 906  *
 907  * \param p_dec the decoder
 908  */
 909 static void *DecoderThread( void *p_data )
 910 {
 911     decoder_t *p_dec = (decoder_t *)p_data;
 912     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 913
 914     /* The decoder's main loop */
 915     for( ;; )
 916     {
 917         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 918
 919         /* Make sure there is no cancellation point other than this one^^.
 920          * If you need one, be sure to push cleanup of p_block. */
 921         DecoderSignalBuffering( p_dec, p_block == NULL );
 922
 923         if( p_block )
 924         {
 925             int canc = vlc_savecancel();
 926
 927             if( p_block->i_flags & BLOCK_FLAG_CORE_EOS )
 928             {
 929                 /* calling DecoderProcess() with NULL block will make
 930                  * decoders/packetizers flush their buffers */
 931                 block_Release( p_block );
 932                 p_block = NULL;
 933             }
 934
 935             if( p_dec->b_error )
 936                 DecoderError( p_dec, p_block );
 937             else
 938                 DecoderProcess( p_dec, p_block );
 939
 940             vlc_restorecancel( canc );
 941         }
 942     }
 943     return NULL;
 944 }
 945
 946 static block_t *DecoderBlockFlushNew()
 947 {
 948     block_t *p_null = block_Alloc( 128 );
 949     if( !p_null )
 950         return NULL;
 951
 952     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY |
 953                        BLOCK_FLAG_CORRUPTED |
 954                        BLOCK_FLAG_CORE_FLUSH;
 955     memset( p_null->p_buffer, 0, p_null->i_buffer );
 956
 957     return p_null;
 958 }
 959
 960 static void DecoderFlush( decoder_t *p_dec )
 961 {
 962     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 963
 964     vlc_assert_locked( &p_owner->lock );
 965
 966     /* Empty the fifo */
 967     block_FifoEmpty( p_owner->p_fifo );
 968
 969     /* Monitor for flush end */
 970     p_owner->b_flushing = true;
 971     vlc_cond_signal( &p_owner->wait_request );
 972
 973     /* Send a special block */
 974     block_t *p_null = DecoderBlockFlushNew();
 975     if( !p_null )
 976         return;
 977     input_DecoderDecode( p_dec, p_null, false );
 978
 979     /* */
 980     while( p_owner->b_flushing )
 981         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
 982 }
 983
 984 static void DecoderSignalBuffering( decoder_t *p_dec, bool b_full )
 985 {
 986     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 987
 988     vlc_mutex_lock( &p_owner->lock );
 989
 990     if( p_owner->b_buffering )
 991     {
 992         if( b_full )
 993             p_owner->buffer.b_full = true;
 994         vlc_cond_signal( &p_owner->wait_acknowledge );
 995     }
 996
 997     vlc_mutex_unlock( &p_owner->lock );
 998 }
 999
1000 static bool DecoderIsFlushing( decoder_t *p_dec )
1001 {
1002     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1003     bool b_flushing;
1004
1005     vlc_mutex_lock( &p_owner->lock );
1006
1007     b_flushing = p_owner->b_flushing;
1008
1009     vlc_mutex_unlock( &p_owner->lock );
1010
1011     return b_flushing;
1012 }
1013
1014 static void DecoderWaitUnblock( decoder_t *p_dec, bool *pb_reject )
1015 {
1016     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1017
1018     vlc_assert_locked( &p_owner->lock );
1019
1020     while( !p_owner->b_flushing )
1021     {
1022         if( p_owner->b_paused )
1023         {
1024             if( p_owner->b_buffering && !p_owner->buffer.b_full )
1025                 break;
1026             if( p_owner->pause.i_ignore > 0 )
1027             {
1028                 p_owner->pause.i_ignore--;
1029                 break;
1030             }
1031         }
1032         else
1033         {
1034             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
1035                 break;
1036         }
1037         vlc_cond_wait( &p_owner->wait_request, &p_owner->lock );
1038     }
1039
1040     if( pb_reject )
1041         *pb_reject = p_owner->b_flushing;
1042 }
1043
1044 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
1045 {
1046     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1047
1048     vlc_assert_locked( &p_owner->lock );
1049
1050     /* XXX only audio and video output have to be paused.
1051      * - for sout it is useless
1052      * - for subs, it is done by the vout
1053      */
1054     if( p_dec->fmt_out.i_cat == AUDIO_ES )
1055     {
1056         if( p_owner->p_aout )
1057             aout_DecChangePause( p_owner->p_aout, b_paused, i_date );
1058     }
1059     else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1060     {
1061         if( p_owner->p_vout )
1062             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1063     }
1064 }
1065 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1066 {
1067     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1068         *pi_preroll = INT64_MAX;
1069     else if( p->i_dts > VLC_TS_INVALID )
1070         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1071     else if( p->i_pts > VLC_TS_INVALID )
1072         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1073 }
1074
1075 static mtime_t DecoderTeletextFixTs( mtime_t i_ts )
1076 {
1077     mtime_t current_date = mdate();
1078
1079     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
1080     if( i_ts <= VLC_TS_INVALID || i_ts > current_date + 10000000 || i_ts < current_date )
1081     {
1082         /* ETSI EN 300 472 Annex A : do not take into account the PTS
1083          * for teletext streams. */
1084         return current_date + 400000;
1085     }
1086     return i_ts;
1087 }
1088
1089 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1090                           mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound, bool b_telx )
1091 {
1092     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1093     input_clock_t   *p_clock = p_owner->p_clock;
1094
1095     vlc_assert_locked( &p_owner->lock );
1096
1097     const mtime_t i_es_delay = p_owner->i_ts_delay;
1098
1099     if( p_clock )
1100     {
1101         const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1102         int i_rate;
1103
1104         if( *pi_ts0 > VLC_TS_INVALID )
1105         {
1106             *pi_ts0 += i_es_delay;
1107             if( pi_ts1 && *pi_ts1 > VLC_TS_INVALID )
1108                 *pi_ts1 += i_es_delay;
1109             if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) )
1110                 *pi_ts0 = VLC_TS_INVALID;
1111         }
1112         else
1113         {
1114             i_rate = input_clock_GetRate( p_clock );
1115         }
1116
1117         /* Do not create ephemere data because of rounding errors */
1118         if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1119             *pi_ts1 += 1;
1120
1121         if( pi_duration )
1122             *pi_duration = ( *pi_duration * i_rate +
1123                                     INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
1124
1125         if( pi_rate )
1126             *pi_rate = i_rate;
1127
1128         if( b_telx )
1129         {
1130             *pi_ts0 = DecoderTeletextFixTs( *pi_ts0 );
1131             if( pi_ts1 && *pi_ts1 <= VLC_TS_INVALID )
1132                 *pi_ts1 = *pi_ts0;
1133         }
1134     }
1135 }
1136
1137 static bool DecoderIsExitRequested( decoder_t *p_dec )
1138 {
1139     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1140
1141     vlc_mutex_lock( &p_owner->lock );
1142     bool b_exit = p_owner->b_exit;
1143     vlc_mutex_unlock( &p_owner->lock );
1144
1145     return b_exit;
1146 }
1147
1148 /**
1149  * If *pb_reject, it does nothing, otherwise it waits for the given
1150  * deadline or a flush request (in which case it set *pi_reject to true.
1151  */
1152 static void DecoderWaitDate( decoder_t *p_dec,
1153                              bool *pb_reject, mtime_t i_deadline )
1154 {
1155     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1156
1157     if( *pb_reject || i_deadline < 0 )
1158         return;
1159
1160     for( ;; )
1161     {
1162         vlc_mutex_lock( &p_owner->lock );
1163         if( p_owner->b_flushing || p_owner->b_exit )
1164         {
1165             *pb_reject = true;
1166             vlc_mutex_unlock( &p_owner->lock );
1167             break;
1168         }
1169         int i_ret = vlc_cond_timedwait( &p_owner->wait_request, &p_owner->lock,
1170                                         i_deadline );
1171         vlc_mutex_unlock( &p_owner->lock );
1172         if( i_ret )
1173             break;
1174     }
1175 }
1176
1177 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1178                               int *pi_played_sum, int *pi_lost_sum )
1179 {
1180     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1181     audio_output_t *p_aout = p_owner->p_aout;
1182
1183     /* */
1184     if( p_audio->i_pts <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify audio_output/*
1185     {
1186         msg_Warn( p_dec, "non-dated audio buffer received" );
1187         *pi_lost_sum += 1;
1188         aout_BufferFree( p_audio );
1189         return;
1190     }
1191
1192     /* */
1193     vlc_mutex_lock( &p_owner->lock );
1194
1195     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1196     {
1197         p_audio->p_next = NULL;
1198
1199         *p_owner->buffer.pp_audio_next = p_audio;
1200         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1201
1202         p_owner->buffer.i_count++;
1203         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1204             p_audio->i_pts - p_owner->buffer.p_audio->i_pts > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1205         {
1206             p_owner->buffer.b_full = true;
1207             vlc_cond_signal( &p_owner->wait_acknowledge );
1208         }
1209     }
1210
1211     for( ;; )
1212     {
1213         bool b_has_more = false;
1214         bool b_reject;
1215         DecoderWaitUnblock( p_dec, &b_reject );
1216
1217         if( p_owner->b_buffering )
1218         {
1219             vlc_mutex_unlock( &p_owner->lock );
1220             return;
1221         }
1222
1223         /* */
1224         if( p_owner->buffer.p_audio )
1225         {
1226             p_audio = p_owner->buffer.p_audio;
1227
1228             p_owner->buffer.p_audio = p_audio->p_next;
1229             p_owner->buffer.i_count--;
1230
1231             b_has_more = p_owner->buffer.p_audio != NULL;
1232             if( !b_has_more )
1233                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1234         }
1235
1236         /* */
1237         const bool b_dated = p_audio->i_pts > VLC_TS_INVALID;
1238         int i_rate = INPUT_RATE_DEFAULT;
1239
1240         DecoderFixTs( p_dec, &p_audio->i_pts, NULL, &p_audio->i_length,
1241                       &i_rate, AOUT_MAX_ADVANCE_TIME, false );
1242
1243         vlc_mutex_unlock( &p_owner->lock );
1244
1245         if( !p_aout ||
1246             p_audio->i_pts <= VLC_TS_INVALID ||
1247             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1248             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1249             b_reject = true;
1250
1251         DecoderWaitDate( p_dec, &b_reject,
1252                          p_audio->i_pts - AOUT_MAX_PREPARE_TIME );
1253
1254         if( !b_reject )
1255         {
1256             if( !aout_DecPlay( p_aout, p_audio, i_rate ) )
1257                 *pi_played_sum += 1;
1258             *pi_lost_sum += aout_DecGetResetLost( p_aout );
1259         }
1260         else
1261         {
1262             if( b_dated )
1263                 msg_Warn( p_dec, "received buffer in the future" );
1264             else
1265                 msg_Warn( p_dec, "non-dated audio buffer received" );
1266
1267             *pi_lost_sum += 1;
1268             aout_BufferFree( p_audio );
1269         }
1270
1271         if( !b_has_more )
1272             break;
1273
1274         vlc_mutex_lock( &p_owner->lock );
1275         if( !p_owner->buffer.p_audio )
1276         {
1277             vlc_mutex_unlock( &p_owner->lock );
1278             break;
1279         }
1280     }
1281 }
1282
1283 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1284 {
1285     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1286     aout_buffer_t   *p_aout_buf;
1287     int i_decoded = 0;
1288     int i_lost = 0;
1289     int i_played = 0;
1290
1291     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1292     {
1293         audio_output_t *p_aout = p_owner->p_aout;
1294
1295         if( DecoderIsExitRequested( p_dec ) )
1296         {
1297             /* It prevent freezing VLC in case of broken decoder */
1298             aout_DecDeleteBuffer( p_aout, p_aout_buf );
1299             if( p_block )
1300                 block_Release( p_block );
1301             break;
1302         }
1303         i_decoded++;
1304
1305         if( p_owner->i_preroll_end > VLC_TS_INVALID &&
1306             p_aout_buf->i_pts < p_owner->i_preroll_end )
1307         {
1308             aout_DecDeleteBuffer( p_aout, p_aout_buf );
1309             continue;
1310         }
1311
1312         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1313         {
1314             msg_Dbg( p_dec, "End of audio preroll" );
1315             if( p_owner->p_aout )
1316                 aout_DecFlush( p_owner->p_aout );
1317             /* */
1318             p_owner->i_preroll_end = VLC_TS_INVALID;
1319         }
1320
1321         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1322     }
1323
1324     /* Update ugly stat */
1325     input_thread_t  *p_input = p_owner->p_input;
1326
1327     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_played > 0) )
1328     {
1329         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1330         stats_Update( p_input->p->counters.p_lost_abuffers, i_lost, NULL );
1331         stats_Update( p_input->p->counters.p_played_abuffers, i_played, NULL );
1332         stats_Update( p_input->p->counters.p_decoded_audio, i_decoded, NULL );
1333         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1334     }
1335 }
1336 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1337 {
1338     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1339     block_t *p_cc;
1340     bool pb_present[4];
1341     bool b_processed = false;
1342     int i;
1343     int i_cc_decoder;
1344
1345     assert( p_dec_cc->pf_get_cc != NULL );
1346
1347     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1348     if( !p_owner->cc.b_supported )
1349         return;
1350
1351     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1352     if( !p_cc )
1353         return;
1354
1355     vlc_mutex_lock( &p_owner->lock );
1356     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1357     {
1358         p_owner->cc.pb_present[i] |= pb_present[i];
1359         if( p_owner->cc.pp_decoder[i] )
1360             i_cc_decoder++;
1361     }
1362
1363     for( i = 0; i < 4; i++ )
1364     {
1365         if( !p_owner->cc.pp_decoder[i] )
1366             continue;
1367
1368         if( i_cc_decoder > 1 )
1369             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1370         else
1371             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1372         i_cc_decoder--;
1373         b_processed = true;
1374     }
1375     vlc_mutex_unlock( &p_owner->lock );
1376
1377     if( !b_processed )
1378         block_Release( p_cc );
1379 }
1380
1381 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1382                               int *pi_played_sum, int *pi_lost_sum )
1383 {
1384     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1385     vout_thread_t  *p_vout = p_owner->p_vout;
1386     bool b_first_buffered;
1387
1388     if( p_picture->date <= VLC_TS_INVALID )
1389     {
1390         msg_Warn( p_dec, "non-dated video buffer received" );
1391         *pi_lost_sum += 1;
1392         vout_ReleasePicture( p_vout, p_picture );
1393         return;
1394     }
1395
1396     /* */
1397     vlc_mutex_lock( &p_owner->lock );
1398
1399     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1400     {
1401         p_picture->p_next = NULL;
1402
1403         *p_owner->buffer.pp_picture_next = p_picture;
1404         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1405
1406         p_owner->buffer.i_count++;
1407         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1408             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1409         {
1410             p_owner->buffer.b_full = true;
1411             vlc_cond_signal( &p_owner->wait_acknowledge );
1412         }
1413     }
1414     b_first_buffered = p_owner->buffer.p_picture != NULL;
1415
1416     for( ;; b_first_buffered = false )
1417     {
1418         bool b_has_more = false;
1419
1420         bool b_reject;
1421
1422         DecoderWaitUnblock( p_dec, &b_reject );
1423
1424         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1425         {
1426             vlc_mutex_unlock( &p_owner->lock );
1427             return;
1428         }
1429         bool b_buffering_first = p_owner->b_buffering;
1430
1431         /* */
1432         if( p_owner->buffer.p_picture )
1433         {
1434             p_picture = p_owner->buffer.p_picture;
1435
1436             p_owner->buffer.p_picture = p_picture->p_next;
1437             p_owner->buffer.i_count--;
1438
1439             b_has_more = p_owner->buffer.p_picture != NULL;
1440             if( !b_has_more )
1441                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1442         }
1443
1444         /* */
1445         if( b_buffering_first )
1446         {
1447             assert( p_owner->buffer.b_first );
1448             assert( !p_owner->buffer.i_count );
1449             msg_Dbg( p_dec, "Received first picture" );
1450             p_owner->buffer.b_first = false;
1451             p_picture->b_force = true;
1452         }
1453
1454         const bool b_dated = p_picture->date > VLC_TS_INVALID;
1455         int i_rate = INPUT_RATE_DEFAULT;
1456         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1457                       &i_rate, DECODER_BOGUS_VIDEO_DELAY, false );
1458
1459         vlc_mutex_unlock( &p_owner->lock );
1460
1461         /* */
1462         if( !p_picture->b_force && p_picture->date <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify video_output/*
1463             b_reject = true;
1464
1465         if( !b_reject )
1466         {
1467             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1468             {
1469                 /* Be sure to not display old picture after our own */
1470                 vout_Flush( p_vout, p_picture->date );
1471                 p_owner->i_last_rate = i_rate;
1472             }
1473             vout_PutPicture( p_vout, p_picture );
1474         }
1475         else
1476         {
1477             if( b_dated )
1478                 msg_Warn( p_dec, "early picture skipped" );
1479             else
1480                 msg_Warn( p_dec, "non-dated video buffer received" );
1481
1482             *pi_lost_sum += 1;
1483             vout_ReleasePicture( p_vout, p_picture );
1484         }
1485         int i_tmp_display;
1486         int i_tmp_lost;
1487         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1488
1489         *pi_played_sum += i_tmp_display;
1490         *pi_lost_sum += i_tmp_lost;
1491
1492         if( !b_has_more || b_buffering_first )
1493             break;
1494
1495         vlc_mutex_lock( &p_owner->lock );
1496         if( !p_owner->buffer.p_picture )
1497         {
1498             vlc_mutex_unlock( &p_owner->lock );
1499             break;
1500         }
1501     }
1502 }
1503
1504 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1505 {
1506     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1507     picture_t      *p_pic;
1508     int i_lost = 0;
1509     int i_decoded = 0;
1510     int i_displayed = 0;
1511
1512     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1513     {
1514         vout_thread_t  *p_vout = p_owner->p_vout;
1515         if( DecoderIsExitRequested( p_dec ) )
1516         {
1517             /* It prevent freezing VLC in case of broken decoder */
1518             vout_ReleasePicture( p_vout, p_pic );
1519             if( p_block )
1520                 block_Release( p_block );
1521             break;
1522         }
1523
1524         i_decoded++;
1525
1526         if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
1527         {
1528             vout_ReleasePicture( p_vout, p_pic );
1529             continue;
1530         }
1531
1532         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1533         {
1534             msg_Dbg( p_dec, "End of video preroll" );
1535             if( p_vout )
1536                 vout_Flush( p_vout, VLC_TS_INVALID+1 );
1537             /* */
1538             p_owner->i_preroll_end = VLC_TS_INVALID;
1539         }
1540
1541         if( p_dec->pf_get_cc &&
1542             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1543             DecoderGetCc( p_dec, p_dec );
1544
1545         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1546     }
1547
1548     /* Update ugly stat */
1549     input_thread_t *p_input = p_owner->p_input;
1550
1551     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
1552     {
1553         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1554         stats_Update( p_input->p->counters.p_decoded_video, i_decoded, NULL );
1555         stats_Update( p_input->p->counters.p_lost_pictures, i_lost , NULL);
1556         stats_Update( p_input->p->counters.p_displayed_pictures,
1557                       i_displayed, NULL);
1558         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1559     }
1560 }
1561
1562 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic,
1563                             bool b_telx )
1564 {
1565     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1566     vout_thread_t *p_vout = p_owner->p_spu_vout;
1567
1568     /* */
1569     if( p_subpic->i_start <= VLC_TS_INVALID && !b_telx )
1570     {
1571         msg_Warn( p_dec, "non-dated spu buffer received" );
1572         subpicture_Delete( p_subpic );
1573         return;
1574     }
1575
1576     /* */
1577     vlc_mutex_lock( &p_owner->lock );
1578
1579     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1580     {
1581         p_subpic->p_next = NULL;
1582
1583         *p_owner->buffer.pp_subpic_next = p_subpic;
1584         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1585
1586         p_owner->buffer.i_count++;
1587         /* XXX it is important to be full after the first one */
1588         if( p_owner->buffer.i_count > 0 )
1589         {
1590             p_owner->buffer.b_full = true;
1591             vlc_cond_signal( &p_owner->wait_acknowledge );
1592         }
1593     }
1594
1595     for( ;; )
1596     {
1597         bool b_has_more = false;
1598         bool b_reject;
1599         DecoderWaitUnblock( p_dec, &b_reject );
1600
1601         if( p_owner->b_buffering )
1602         {
1603             vlc_mutex_unlock( &p_owner->lock );
1604             return;
1605         }
1606
1607         /* */
1608         if( p_owner->buffer.p_subpic )
1609         {
1610             p_subpic = p_owner->buffer.p_subpic;
1611
1612             p_owner->buffer.p_subpic = p_subpic->p_next;
1613             p_owner->buffer.i_count--;
1614
1615             b_has_more = p_owner->buffer.p_subpic != NULL;
1616             if( !b_has_more )
1617                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1618         }
1619
1620         /* */
1621         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1622                       NULL, INT64_MAX, b_telx );
1623
1624         vlc_mutex_unlock( &p_owner->lock );
1625
1626         if( p_subpic->i_start <= VLC_TS_INVALID )
1627             b_reject = true;
1628
1629         DecoderWaitDate( p_dec, &b_reject,
1630                          p_subpic->i_start - SPU_MAX_PREPARE_TIME );
1631
1632         if( !b_reject )
1633             vout_PutSubpicture( p_vout, p_subpic );
1634         else
1635             subpicture_Delete( p_subpic );
1636
1637         if( !b_has_more )
1638             break;
1639         vlc_mutex_lock( &p_owner->lock );
1640         if( !p_owner->buffer.p_subpic )
1641         {
1642             vlc_mutex_unlock( &p_owner->lock );
1643             break;
1644         }
1645     }
1646 }
1647
1648 #ifdef ENABLE_SOUT
1649 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block,
1650                              bool b_telx )
1651 {
1652     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1653
1654     assert( p_owner->p_clock );
1655     assert( !p_sout_block->p_next );
1656
1657     vlc_mutex_lock( &p_owner->lock );
1658
1659     if( p_owner->b_buffering || p_owner->buffer.p_block )
1660     {
1661         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1662
1663         p_owner->buffer.i_count++;
1664         /* XXX it is important to be full after the first one */
1665         if( p_owner->buffer.i_count > 0 )
1666         {
1667             p_owner->buffer.b_full = true;
1668             vlc_cond_signal( &p_owner->wait_acknowledge );
1669         }
1670     }
1671
1672     for( ;; )
1673     {
1674         bool b_has_more = false;
1675         bool b_reject;
1676         DecoderWaitUnblock( p_dec, &b_reject );
1677
1678         if( p_owner->b_buffering )
1679         {
1680             vlc_mutex_unlock( &p_owner->lock );
1681             return;
1682         }
1683
1684         /* */
1685         if( p_owner->buffer.p_block )
1686         {
1687             p_sout_block = p_owner->buffer.p_block;
1688
1689             p_owner->buffer.p_block = p_sout_block->p_next;
1690             p_owner->buffer.i_count--;
1691
1692             b_has_more = p_owner->buffer.p_block != NULL;
1693             if( !b_has_more )
1694                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1695         }
1696         p_sout_block->p_next = NULL;
1697
1698         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1699                       &p_sout_block->i_length, NULL, INT64_MAX, b_telx );
1700
1701         vlc_mutex_unlock( &p_owner->lock );
1702
1703         if( !b_reject )
1704             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block ); // FIXME --VLC_TS_INVALID inspect stream_output/*
1705         else
1706             block_Release( p_sout_block );
1707
1708         if( !b_has_more )
1709             break;
1710         vlc_mutex_lock( &p_owner->lock );
1711         if( !p_owner->buffer.p_block )
1712         {
1713             vlc_mutex_unlock( &p_owner->lock );
1714             break;
1715         }
1716     }
1717 }
1718 #endif
1719
1720 /* */
1721 static void DecoderFlushBuffering( decoder_t *p_dec )
1722 {
1723     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1724
1725     vlc_assert_locked( &p_owner->lock );
1726
1727     while( p_owner->buffer.p_picture )
1728     {
1729         picture_t *p_picture = p_owner->buffer.p_picture;
1730
1731         p_owner->buffer.p_picture = p_picture->p_next;
1732         p_owner->buffer.i_count--;
1733
1734         if( p_owner->p_vout )
1735         {
1736             vout_ReleasePicture( p_owner->p_vout, p_picture );
1737         }
1738
1739         if( !p_owner->buffer.p_picture )
1740             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1741     }
1742     while( p_owner->buffer.p_audio )
1743     {
1744         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1745
1746         p_owner->buffer.p_audio = p_audio->p_next;
1747         p_owner->buffer.i_count--;
1748
1749         aout_BufferFree( p_audio );
1750
1751         if( !p_owner->buffer.p_audio )
1752             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1753     }
1754     while( p_owner->buffer.p_subpic )
1755     {
1756         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1757
1758         p_owner->buffer.p_subpic = p_subpic->p_next;
1759         p_owner->buffer.i_count--;
1760
1761         subpicture_Delete( p_subpic );
1762
1763         if( !p_owner->buffer.p_subpic )
1764             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1765     }
1766     if( p_owner->buffer.p_block )
1767     {
1768         block_ChainRelease( p_owner->buffer.p_block );
1769
1770         p_owner->buffer.i_count = 0;
1771         p_owner->buffer.p_block = NULL;
1772         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1773     }
1774 }
1775
1776 #ifdef ENABLE_SOUT
1777 /* This function process a block for sout
1778  */
1779 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1780 {
1781     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1782     const bool b_telx = p_dec->fmt_in.i_codec == VLC_CODEC_TELETEXT;
1783     block_t *p_sout_block;
1784
1785     while( ( p_sout_block =
1786                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1787     {
1788         if( !p_owner->p_sout_input )
1789         {
1790             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1791
1792             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1793             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1794             if( p_dec->fmt_in.psz_language )
1795             {
1796                 free( p_owner->sout.psz_language );
1797                 p_owner->sout.psz_language =
1798                     strdup( p_dec->fmt_in.psz_language );
1799             }
1800
1801             p_owner->p_sout_input =
1802                 sout_InputNew( p_owner->p_sout,
1803                                &p_owner->sout );
1804
1805             if( p_owner->p_sout_input == NULL )
1806             {
1807                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1808                          (char *)&p_owner->sout.i_codec );
1809                 p_dec->b_error = true;
1810
1811                 while( p_sout_block )
1812                 {
1813                     block_t *p_next = p_sout_block->p_next;
1814                     block_Release( p_sout_block );
1815                     p_sout_block = p_next;
1816                 }
1817                 break;
1818             }
1819         }
1820
1821         while( p_sout_block )
1822         {
1823             block_t *p_next = p_sout_block->p_next;
1824
1825             p_sout_block->p_next = NULL;
1826
1827             DecoderPlaySout( p_dec, p_sout_block, b_telx );
1828
1829             p_sout_block = p_next;
1830         }
1831     }
1832 }
1833 #endif
1834
1835 /* This function process a video block
1836  */
1837 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1838 {
1839     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1840
1841     if( p_owner->p_packetizer )
1842     {
1843         block_t *p_packetized_block;
1844         decoder_t *p_packetizer = p_owner->p_packetizer;
1845
1846         while( (p_packetized_block =
1847                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1848         {
1849             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1850             {
1851                 es_format_Clean( &p_dec->fmt_in );
1852                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1853             }
1854             if( p_packetizer->pf_get_cc )
1855                 DecoderGetCc( p_dec, p_packetizer );
1856
1857             while( p_packetized_block )
1858             {
1859                 block_t *p_next = p_packetized_block->p_next;
1860                 p_packetized_block->p_next = NULL;
1861
1862                 DecoderDecodeVideo( p_dec, p_packetized_block );
1863
1864                 p_packetized_block = p_next;
1865             }
1866         }
1867         /* The packetizer does not output a block that tell the decoder to flush
1868          * do it ourself */
1869         if( b_flush )
1870         {
1871             block_t *p_null = DecoderBlockFlushNew();
1872             if( p_null )
1873                 DecoderDecodeVideo( p_dec, p_null );
1874         }
1875     }
1876     else if( p_block )
1877     {
1878         DecoderDecodeVideo( p_dec, p_block );
1879     }
1880
1881     if( b_flush && p_owner->p_vout )
1882         vout_Flush( p_owner->p_vout, VLC_TS_INVALID+1 );
1883 }
1884
1885 /* This function process a audio block
1886  */
1887 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1888 {
1889     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1890
1891     if( p_owner->p_packetizer )
1892     {
1893         block_t *p_packetized_block;
1894         decoder_t *p_packetizer = p_owner->p_packetizer;
1895
1896         while( (p_packetized_block =
1897                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1898         {
1899             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1900             {
1901                 es_format_Clean( &p_dec->fmt_in );
1902                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1903             }
1904
1905             while( p_packetized_block )
1906             {
1907                 block_t *p_next = p_packetized_block->p_next;
1908                 p_packetized_block->p_next = NULL;
1909
1910                 DecoderDecodeAudio( p_dec, p_packetized_block );
1911
1912                 p_packetized_block = p_next;
1913             }
1914         }
1915         /* The packetizer does not output a block that tell the decoder to flush
1916          * do it ourself */
1917         if( b_flush )
1918         {
1919             block_t *p_null = DecoderBlockFlushNew();
1920             if( p_null )
1921                 DecoderDecodeAudio( p_dec, p_null );
1922         }
1923     }
1924     else if( p_block )
1925     {
1926         DecoderDecodeAudio( p_dec, p_block );
1927     }
1928
1929     if( b_flush && p_owner->p_aout )
1930         aout_DecFlush( p_owner->p_aout );
1931 }
1932
1933 /* This function process a subtitle block
1934  */
1935 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1936 {
1937     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1938     const bool b_telx = p_dec->fmt_in.i_codec == VLC_CODEC_TELETEXT;
1939
1940     input_thread_t *p_input = p_owner->p_input;
1941     vout_thread_t *p_vout;
1942     subpicture_t *p_spu;
1943
1944     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1945     {
1946         if( p_input != NULL )
1947         {
1948             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1949             stats_Update( p_input->p->counters.p_decoded_sub, 1, NULL );
1950             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1951         }
1952
1953         p_vout = input_resource_HoldVout( p_owner->p_resource );
1954         if( p_vout && p_owner->p_spu_vout == p_vout )
1955         {
1956             /* Preroll does not work very well with subtitle */
1957             if( p_spu->i_start > VLC_TS_INVALID &&
1958                 p_spu->i_start < p_owner->i_preroll_end &&
1959                 ( p_spu->i_stop <= VLC_TS_INVALID || p_spu->i_stop < p_owner->i_preroll_end ) )
1960             {
1961                 subpicture_Delete( p_spu );
1962             }
1963             else
1964             {
1965                 DecoderPlaySpu( p_dec, p_spu, b_telx );
1966             }
1967         }
1968         else
1969         {
1970             subpicture_Delete( p_spu );
1971         }
1972         if( p_vout )
1973             vlc_object_release( p_vout );
1974     }
1975
1976     if( b_flush && p_owner->p_spu_vout )
1977     {
1978         p_vout = input_resource_HoldVout( p_owner->p_resource );
1979
1980         if( p_vout && p_owner->p_spu_vout == p_vout )
1981             vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1982
1983         if( p_vout )
1984             vlc_object_release( p_vout );
1985     }
1986 }
1987
1988 /* */
1989 static void DecoderProcessOnFlush( decoder_t *p_dec )
1990 {
1991     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1992
1993     vlc_mutex_lock( &p_owner->lock );
1994     DecoderFlushBuffering( p_dec );
1995
1996     if( p_owner->b_flushing )
1997     {
1998         p_owner->b_flushing = false;
1999         vlc_cond_signal( &p_owner->wait_acknowledge );
2000     }
2001     vlc_mutex_unlock( &p_owner->lock );
2002 }
2003
2004 /**
2005  * Decode a block
2006  *
2007  * \param p_dec the decoder object
2008  * \param p_block the block to decode
2009  * \return VLC_SUCCESS or an error code
2010  */
2011 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
2012 {
2013     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
2014     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
2015
2016     if( p_block && p_block->i_buffer <= 0 )
2017     {
2018         assert( !b_flush_request );
2019         block_Release( p_block );
2020         return;
2021     }
2022
2023 #ifdef ENABLE_SOUT
2024     if( p_owner->b_packetizer )
2025     {
2026         if( p_block )
2027             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
2028
2029         DecoderProcessSout( p_dec, p_block );
2030     }
2031     else
2032 #endif
2033     {
2034         bool b_flush = false;
2035
2036         if( p_block )
2037         {
2038             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
2039             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
2040
2041             b_flush = !b_flushing && b_flush_request;
2042
2043             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
2044         }
2045
2046         if( p_dec->fmt_out.i_cat == AUDIO_ES )
2047         {
2048             DecoderProcessAudio( p_dec, p_block, b_flush );
2049         }
2050         else if( p_dec->fmt_out.i_cat == VIDEO_ES )
2051         {
2052             DecoderProcessVideo( p_dec, p_block, b_flush );
2053         }
2054         else if( p_dec->fmt_out.i_cat == SPU_ES )
2055         {
2056             DecoderProcessSpu( p_dec, p_block, b_flush );
2057         }
2058         else
2059         {
2060             msg_Err( p_dec, "unknown ES format" );
2061             p_dec->b_error = true;
2062         }
2063     }
2064
2065     /* */
2066     if( b_flush_request )
2067         DecoderProcessOnFlush( p_dec );
2068 }
2069
2070 static void DecoderError( decoder_t *p_dec, block_t *p_block )
2071 {
2072     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
2073
2074     /* */
2075     if( p_block )
2076         block_Release( p_block );
2077
2078     if( b_flush_request )
2079         DecoderProcessOnFlush( p_dec );
2080 }
2081
2082
2083 /**
2084  * Destroys a decoder object
2085  *
2086  * \param p_dec the decoder object
2087  * \return nothing
2088  */
2089 static void DeleteDecoder( decoder_t * p_dec )
2090 {
2091     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2092
2093     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2094              (char*)&p_dec->fmt_in.i_codec,
2095              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2096
2097     /* Free all packets still in the decoder fifo. */
2098     block_FifoEmpty( p_owner->p_fifo );
2099     block_FifoRelease( p_owner->p_fifo );
2100
2101     /* */
2102     vlc_mutex_lock( &p_owner->lock );
2103     DecoderFlushBuffering( p_dec );
2104     vlc_mutex_unlock( &p_owner->lock );
2105
2106     /* Cleanup */
2107     if( p_owner->p_aout )
2108     {
2109         /* TODO: REVISIT gap-less audio */
2110         aout_DecFlush( p_owner->p_aout );
2111         aout_DecDelete( p_owner->p_aout );
2112         input_resource_RequestAout( p_owner->p_resource, p_owner->p_aout );
2113         if( p_owner->p_input != NULL )
2114             input_SendEventAout( p_owner->p_input );
2115     }
2116     if( p_owner->p_vout )
2117     {
2118         /* Hack to make sure all the the pictures are freed by the decoder
2119          * and that the vout is not paused anymore */
2120         vout_Reset( p_owner->p_vout );
2121
2122         /* */
2123         input_resource_RequestVout( p_owner->p_resource, p_owner->p_vout, NULL,
2124                                     0, true );
2125         if( p_owner->p_input != NULL )
2126             input_SendEventVout( p_owner->p_input );
2127     }
2128
2129 #ifdef ENABLE_SOUT
2130     if( p_owner->p_sout_input )
2131     {
2132         sout_InputDelete( p_owner->p_sout_input );
2133         es_format_Clean( &p_owner->sout );
2134     }
2135 #endif
2136
2137     if( p_dec->fmt_out.i_cat == SPU_ES )
2138     {
2139         vout_thread_t *p_vout;
2140
2141         p_vout = input_resource_HoldVout( p_owner->p_resource );
2142         if( p_vout )
2143         {
2144             if( p_owner->p_spu_vout == p_vout )
2145                 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
2146             vlc_object_release( p_vout );
2147         }
2148     }
2149
2150     es_format_Clean( &p_dec->fmt_in );
2151     es_format_Clean( &p_dec->fmt_out );
2152     if( p_dec->p_description )
2153         vlc_meta_Delete( p_dec->p_description );
2154     es_format_Clean( &p_owner->fmt_description );
2155     if( p_owner->p_description )
2156         vlc_meta_Delete( p_owner->p_description );
2157
2158     if( p_owner->p_packetizer )
2159     {
2160         module_unneed( p_owner->p_packetizer,
2161                        p_owner->p_packetizer->p_module );
2162         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2163         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2164         if( p_owner->p_packetizer->p_description )
2165             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2166         vlc_object_release( p_owner->p_packetizer );
2167     }
2168
2169     vlc_cond_destroy( &p_owner->wait_acknowledge );
2170     vlc_cond_destroy( &p_owner->wait_request );
2171     vlc_mutex_destroy( &p_owner->lock );
2172
2173     vlc_object_release( p_dec );
2174
2175     free( p_owner );
2176 }
2177
2178 /*****************************************************************************
2179  * Buffers allocation callbacks for the decoders
2180  *****************************************************************************/
2181 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2182 {
2183     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2184
2185     vlc_assert_locked( &p_owner->lock );
2186
2187     p_owner->b_fmt_description = true;
2188
2189     /* Copy es_format */
2190     es_format_Clean( &p_owner->fmt_description );
2191     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2192
2193     /* Move p_description */
2194     if( p_owner->p_description && p_dec->p_description )
2195         vlc_meta_Delete( p_owner->p_description );
2196     p_owner->p_description = p_dec->p_description;
2197     p_dec->p_description = NULL;
2198 }
2199 static vout_thread_t *aout_request_vout( void *p_private,
2200                                          vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
2201 {
2202     decoder_t *p_dec = p_private;
2203     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2204     input_thread_t *p_input = p_owner->p_input;
2205
2206     p_vout = input_resource_RequestVout( p_owner->p_resource, p_vout, p_fmt, 1,
2207                                          b_recyle );
2208     if( p_input != NULL )
2209         input_SendEventVout( p_input );
2210
2211     return p_vout;
2212 }
2213
2214 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2215 {
2216     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2217     aout_buffer_t *p_buffer;
2218
2219     if( p_owner->p_aout &&
2220         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
2221           p_dec->fmt_out.audio.i_original_channels !=
2222               p_owner->audio.i_original_channels ||
2223           p_dec->fmt_out.audio.i_bytes_per_frame !=
2224               p_owner->audio.i_bytes_per_frame ) )
2225     {
2226         audio_output_t *p_aout = p_owner->p_aout;
2227
2228         /* Parameters changed, restart the aout */
2229         vlc_mutex_lock( &p_owner->lock );
2230
2231         DecoderFlushBuffering( p_dec );
2232
2233         aout_DecDelete( p_owner->p_aout );
2234         p_owner->p_aout = NULL;
2235
2236         vlc_mutex_unlock( &p_owner->lock );
2237         input_resource_RequestAout( p_owner->p_resource, p_aout );
2238     }
2239
2240     if( p_owner->p_aout == NULL )
2241     {
2242         const int i_force_dolby = var_InheritInteger( p_dec, "force-dolby-surround" );
2243         audio_sample_format_t format;
2244         audio_output_t *p_aout;
2245         aout_request_vout_t request_vout;
2246
2247         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2248         p_owner->audio = p_dec->fmt_out.audio;
2249
2250         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2251         if( i_force_dolby &&
2252             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2253                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2254         {
2255             if( i_force_dolby == 1 )
2256             {
2257                 format.i_original_channels = format.i_original_channels |
2258                                              AOUT_CHAN_DOLBYSTEREO;
2259             }
2260             else /* i_force_dolby == 2 */
2261             {
2262                 format.i_original_channels = format.i_original_channels &
2263                                              ~AOUT_CHAN_DOLBYSTEREO;
2264             }
2265         }
2266
2267         request_vout.pf_request_vout = aout_request_vout;
2268         request_vout.p_private = p_dec;
2269
2270         assert( p_owner->p_aout == NULL );
2271         p_aout = input_resource_RequestAout( p_owner->p_resource, NULL );
2272         if( p_aout )
2273         {
2274             aout_FormatPrepare( &format );
2275             if( aout_DecNew( p_aout, &format,
2276                              &p_dec->fmt_out.audio_replay_gain,
2277                              &request_vout ) )
2278             {
2279                 input_resource_RequestAout( p_owner->p_resource, p_aout );
2280                 p_aout = NULL;
2281             }
2282         }
2283
2284         vlc_mutex_lock( &p_owner->lock );
2285
2286         p_owner->p_aout = p_aout;
2287         DecoderUpdateFormatLocked( p_dec );
2288
2289         vlc_mutex_unlock( &p_owner->lock );
2290
2291         if( p_owner->p_input != NULL )
2292             input_SendEventAout( p_owner->p_input );
2293
2294         if( p_aout == NULL )
2295         {
2296             msg_Err( p_dec, "failed to create audio output" );
2297             p_dec->b_error = true;
2298             return NULL;
2299         }
2300         p_dec->fmt_out.audio.i_bytes_per_frame =
2301             p_owner->audio.i_bytes_per_frame;
2302     }
2303
2304     p_buffer = aout_DecNewBuffer( p_owner->p_aout, i_samples );
2305
2306     return p_buffer;
2307 }
2308
2309 static picture_t *vout_new_buffer( decoder_t *p_dec )
2310 {
2311     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2312
2313     if( p_owner->p_vout == NULL ||
2314         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2315         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2316         p_dec->fmt_out.video.i_visible_width != p_owner->video.i_visible_width ||
2317         p_dec->fmt_out.video.i_visible_height != p_owner->video.i_visible_height ||
2318         p_dec->fmt_out.video.i_x_offset != p_owner->video.i_x_offset  ||
2319         p_dec->fmt_out.video.i_y_offset != p_owner->video.i_y_offset  ||
2320         p_dec->fmt_out.i_codec != p_owner->video.i_chroma ||
2321         (int64_t)p_dec->fmt_out.video.i_sar_num * p_owner->video.i_sar_den !=
2322         (int64_t)p_dec->fmt_out.video.i_sar_den * p_owner->video.i_sar_num )
2323     {
2324         vout_thread_t *p_vout;
2325
2326         if( !p_dec->fmt_out.video.i_width ||
2327             !p_dec->fmt_out.video.i_height )
2328         {
2329             /* Can't create a new vout without display size */
2330             return NULL;
2331         }
2332
2333         video_format_t fmt = p_dec->fmt_out.video;
2334         fmt.i_chroma = p_dec->fmt_out.i_codec;
2335         p_owner->video = fmt;
2336
2337         if( vlc_fourcc_IsYUV( fmt.i_chroma ) )
2338         {
2339             const vlc_chroma_description_t *dsc = vlc_fourcc_GetChromaDescription( fmt.i_chroma );
2340             for( int i = 0; dsc && i < dsc->plane_count; i++ )
2341             {
2342                 while( fmt.i_width % dsc->p[i].w.den )
2343                     fmt.i_width++;
2344                 while( fmt.i_height % dsc->p[i].h.den )
2345                     fmt.i_height++;
2346             }
2347         }
2348
2349         if( !fmt.i_visible_width || !fmt.i_visible_height )
2350         {
2351             if( p_dec->fmt_in.video.i_visible_width &&
2352                 p_dec->fmt_in.video.i_visible_height )
2353             {
2354                 fmt.i_visible_width  = p_dec->fmt_in.video.i_visible_width;
2355                 fmt.i_visible_height = p_dec->fmt_in.video.i_visible_height;
2356                 fmt.i_x_offset       = p_dec->fmt_in.video.i_x_offset;
2357                 fmt.i_y_offset       = p_dec->fmt_in.video.i_y_offset;
2358             }
2359             else
2360             {
2361                 fmt.i_visible_width  = fmt.i_width;
2362                 fmt.i_visible_height = fmt.i_height;
2363                 fmt.i_x_offset       = 0;
2364                 fmt.i_y_offset       = 0;
2365             }
2366         }
2367
2368         if( fmt.i_visible_height == 1088 &&
2369             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2370         {
2371             fmt.i_visible_height = 1080;
2372             if( !(fmt.i_sar_num % 136))
2373             {
2374                 fmt.i_sar_num *= 135;
2375                 fmt.i_sar_den *= 136;
2376             }
2377             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2378         }
2379
2380         if( !fmt.i_sar_num || !fmt.i_sar_den )
2381         {
2382             fmt.i_sar_num = 1;
2383             fmt.i_sar_den = 1;
2384         }
2385
2386         vlc_ureduce( &fmt.i_sar_num, &fmt.i_sar_den,
2387                      fmt.i_sar_num, fmt.i_sar_den, 50000 );
2388
2389         vlc_mutex_lock( &p_owner->lock );
2390
2391         DecoderFlushBuffering( p_dec );
2392
2393         p_vout = p_owner->p_vout;
2394         p_owner->p_vout = NULL;
2395         vlc_mutex_unlock( &p_owner->lock );
2396
2397         unsigned dpb_size;
2398         switch( p_dec->fmt_in.i_codec )
2399         {
2400         case VLC_CODEC_H264:
2401         case VLC_CODEC_DIRAC: /* FIXME valid ? */
2402             dpb_size = 18;
2403             break;
2404         case VLC_CODEC_VP5:
2405         case VLC_CODEC_VP6:
2406         case VLC_CODEC_VP6F:
2407         case VLC_CODEC_VP8:
2408             dpb_size = 3;
2409             break;
2410         default:
2411             dpb_size = 2;
2412             break;
2413         }
2414         p_vout = input_resource_RequestVout( p_owner->p_resource,
2415                                              p_vout, &fmt,
2416                                              dpb_size + 1 + DECODER_MAX_BUFFERING_COUNT,
2417                                              true );
2418         vlc_mutex_lock( &p_owner->lock );
2419         p_owner->p_vout = p_vout;
2420
2421         DecoderUpdateFormatLocked( p_dec );
2422
2423         vlc_mutex_unlock( &p_owner->lock );
2424
2425         if( p_owner->p_input != NULL )
2426             input_SendEventVout( p_owner->p_input );
2427         if( p_vout == NULL )
2428         {
2429             msg_Err( p_dec, "failed to create video output" );
2430             p_dec->b_error = true;
2431             return NULL;
2432         }
2433     }
2434
2435     /* Get a new picture
2436      */
2437     for( ;; )
2438     {
2439         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2440             return NULL;
2441
2442         picture_t *p_picture = vout_GetPicture( p_owner->p_vout );
2443         if( p_picture )
2444             return p_picture;
2445
2446         if( DecoderIsFlushing( p_dec ) )
2447             return NULL;
2448
2449         /* */
2450         DecoderSignalBuffering( p_dec, true );
2451
2452         /* Check the decoder doesn't leak pictures */
2453         vout_FixLeaks( p_owner->p_vout );
2454
2455         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2456         msleep( VOUT_OUTMEM_SLEEP );
2457     }
2458 }
2459
2460 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2461 {
2462     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2463 }
2464
2465 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2466 {
2467     vout_HoldPicture( p_dec->p_owner->p_vout, p_pic );
2468 }
2469
2470 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2471 {
2472     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2473 }
2474
2475 static subpicture_t *spu_new_buffer( decoder_t *p_dec,
2476                                      const subpicture_updater_t *p_updater )
2477 {
2478     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2479     vout_thread_t *p_vout = NULL;
2480     subpicture_t *p_subpic;
2481     int i_attempts = 30;
2482
2483     while( i_attempts-- )
2484     {
2485         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2486             break;
2487
2488         p_vout = input_resource_HoldVout( p_owner->p_resource );
2489         if( p_vout )
2490             break;
2491
2492         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2493     }
2494
2495     if( !p_vout )
2496     {
2497         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2498         return NULL;
2499     }
2500
2501     if( p_owner->p_spu_vout != p_vout )
2502     {
2503         vlc_mutex_lock( &p_owner->lock );
2504
2505         DecoderFlushBuffering( p_dec );
2506
2507         vlc_mutex_unlock( &p_owner->lock );
2508
2509         p_owner->i_spu_channel = vout_RegisterSubpictureChannel( p_vout );
2510         p_owner->i_spu_order = 0;
2511         p_owner->p_spu_vout = p_vout;
2512     }
2513
2514     p_subpic = subpicture_New( p_updater );
2515     if( p_subpic )
2516     {
2517         p_subpic->i_channel = p_owner->i_spu_channel;
2518         p_subpic->i_order = p_owner->i_spu_order++;
2519         p_subpic->b_subtitle = true;
2520     }
2521
2522     vlc_object_release( p_vout );
2523
2524     return p_subpic;
2525 }
2526
2527 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2528 {
2529     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2530     vout_thread_t *p_vout = NULL;
2531
2532     p_vout = input_resource_HoldVout( p_owner->p_resource );
2533     if( !p_vout || p_owner->p_spu_vout != p_vout )
2534     {
2535         if( p_vout )
2536             vlc_object_release( p_vout );
2537         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2538         return;
2539     }
2540
2541     subpicture_Delete( p_subpic );
2542
2543     vlc_object_release( p_vout );
2544 }
2545