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