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