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 the VideoLAN team
   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
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 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 General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, 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_osd.h>
  42 #include <vlc_meta.h>
  43
  44 #include <vlc_interface.h>
  45 #include "audio_output/aout_internal.h"
  46 #include "stream_output/stream_output.h"
  47 #include "input_internal.h"
  48 #include "clock.h"
  49 #include "decoder.h"
  50 #include "event.h"
  51
  52 #include "../video_output/vout_control.h"
  53
  54 static decoder_t *CreateDecoder( input_thread_t *, es_format_t *, int, sout_instance_t *p_sout );
  55 static void       DeleteDecoder( decoder_t * );
  56
  57 static void      *DecoderThread( vlc_object_t * );
  58 static void       DecoderProcess( decoder_t *, block_t * );
  59 static void       DecoderError( decoder_t *p_dec, block_t *p_block );
  60 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  61 static void       DecoderFlush( decoder_t * );
  62 static void       DecoderSignalBuffering( decoder_t *, bool );
  63 static void       DecoderFlushBuffering( decoder_t * );
  64
  65 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  66
  67 /* Buffers allocation callbacks for the decoders */
  68 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  69 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  70
  71 static picture_t *vout_new_buffer( decoder_t * );
  72 static void vout_del_buffer( decoder_t *, picture_t * );
  73 static void vout_link_picture( decoder_t *, picture_t * );
  74 static void vout_unlink_picture( decoder_t *, picture_t * );
  75
  76 static subpicture_t *spu_new_buffer( decoder_t * );
  77 static void spu_del_buffer( decoder_t *, subpicture_t * );
  78
  79 static es_format_t null_es_format;
  80
  81 struct decoder_owner_sys_t
  82 {
  83     int64_t         i_preroll_end;
  84
  85     input_thread_t  *p_input;
  86     input_clock_t   *p_clock;
  87     int             i_last_rate;
  88
  89     vout_thread_t   *p_spu_vout;
  90     int              i_spu_channel;
  91     int64_t          i_spu_order;
  92
  93     sout_instance_t         *p_sout;
  94     sout_packetizer_input_t *p_sout_input;
  95
  96     /* Some decoders require already packetized data (ie. not truncated) */
  97     decoder_t *p_packetizer;
  98
  99     /* Current format in use by the output */
 100     video_format_t video;
 101     audio_format_t audio;
 102     es_format_t    sout;
 103
 104     /* */
 105     bool           b_fmt_description;
 106     es_format_t    fmt_description;
 107     vlc_meta_t     *p_description;
 108
 109     /* fifo */
 110     block_fifo_t *p_fifo;
 111
 112     /* Lock for communication with decoder thread */
 113     vlc_mutex_t lock;
 114     vlc_cond_t  wait;
 115
 116     /* -- These variables need locking on write(only) -- */
 117     aout_instance_t *p_aout;
 118     aout_input_t    *p_aout_input;
 119
 120     vout_thread_t   *p_vout;
 121
 122     /* -- Theses variables need locking on read *and* write -- */
 123     /* */
 124     /* Pause */
 125     bool b_paused;
 126     struct
 127     {
 128         mtime_t i_date;
 129         int     i_ignore;
 130     } pause;
 131
 132     /* Buffering */
 133     bool b_buffering;
 134     struct
 135     {
 136         bool b_first;
 137         bool b_full;
 138         int  i_count;
 139
 140         picture_t     *p_picture;
 141         picture_t     **pp_picture_next;
 142
 143         subpicture_t  *p_subpic;
 144         subpicture_t  **pp_subpic_next;
 145
 146         aout_buffer_t *p_audio;
 147         aout_buffer_t **pp_audio_next;
 148
 149         block_t       *p_block;
 150         block_t       **pp_block_next;
 151     } buffer;
 152
 153     /* Flushing */
 154     bool b_flushing;
 155
 156     /* CC */
 157     struct
 158     {
 159         bool b_supported;
 160         bool pb_present[4];
 161         decoder_t *pp_decoder[4];
 162     } cc;
 163
 164     /* Delay */
 165     mtime_t i_ts_delay;
 166 };
 167
 168 #define DECODER_MAX_BUFFERING_COUNT (4)
 169 #define DECODER_MAX_BUFFERING_AUDIO_DURATION (AOUT_MAX_PREPARE_TIME)
 170 #define DECODER_MAX_BUFFERING_VIDEO_DURATION (1*CLOCK_FREQ)
 171
 172 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 173  * a bogus PTS and won't be displayed */
 174 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 175
 176 /* */
 177 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 178
 179
 180 /*****************************************************************************
 181  * Public functions
 182  *****************************************************************************/
 183 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 184 {
 185     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 186     if( !p_picture )
 187         msg_Warn( p_decoder, "can't get output picture" );
 188     return p_picture;
 189 }
 190 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 191 {
 192     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 193 }
 194 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 195 {
 196     p_decoder->pf_picture_link( p_decoder, p_picture );
 197 }
 198 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 199 {
 200     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 201 }
 202
 203 aout_buffer_t *decoder_NewAudioBuffer( decoder_t *p_decoder, int i_size )
 204 {
 205     if( !p_decoder->pf_aout_buffer_new )
 206         return NULL;
 207     return p_decoder->pf_aout_buffer_new( p_decoder, i_size );
 208 }
 209 void decoder_DeleteAudioBuffer( decoder_t *p_decoder, aout_buffer_t *p_buffer )
 210 {
 211     p_decoder->pf_aout_buffer_del( p_decoder, p_buffer );
 212 }
 213
 214 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder )
 215 {
 216     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder );
 217     if( !p_subpicture )
 218         msg_Warn( p_decoder, "can't get output subpicture" );
 219     return p_subpicture;
 220 }
 221 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 222 {
 223     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 224 }
 225
 226 /* decoder_GetInputAttachments:
 227  */
 228 int decoder_GetInputAttachments( decoder_t *p_dec,
 229                                  input_attachment_t ***ppp_attachment,
 230                                  int *pi_attachment )
 231 {
 232     if( !p_dec->pf_get_attachments )
 233         return VLC_EGENERIC;
 234
 235     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 236 }
 237 /* decoder_GetDisplayDate:
 238  */
 239 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 240 {
 241     if( !p_dec->pf_get_display_date )
 242         return 0;
 243
 244     return p_dec->pf_get_display_date( p_dec, i_ts );
 245 }
 246 /* decoder_GetDisplayRate:
 247  */
 248 int decoder_GetDisplayRate( decoder_t *p_dec )
 249 {
 250     if( !p_dec->pf_get_display_rate )
 251         return INPUT_RATE_DEFAULT;
 252
 253     return p_dec->pf_get_display_rate( p_dec );
 254 }
 255
 256 /**
 257  * Spawns a new decoder thread
 258  *
 259  * \param p_input the input thread
 260  * \param p_es the es descriptor
 261  * \return the spawned decoder object
 262  */
 263 decoder_t *input_DecoderNew( input_thread_t *p_input,
 264                              es_format_t *fmt, input_clock_t *p_clock, sout_instance_t *p_sout  )
 265 {
 266     decoder_t *p_dec = NULL;
 267     int i_priority;
 268
 269 #ifdef ENABLE_SOUT
 270     /* If we are in sout mode, search for packetizer module */
 271     if( p_sout )
 272     {
 273         /* Create the decoder configuration structure */
 274         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
 275         if( p_dec == NULL )
 276         {
 277             msg_Err( p_input, "could not create packetizer" );
 278             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 279                             _("VLC could not open the packetizer module.") );
 280             return NULL;
 281         }
 282     }
 283     else
 284 #endif
 285     {
 286         /* Create the decoder configuration structure */
 287         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
 288         if( p_dec == NULL )
 289         {
 290             msg_Err( p_input, "could not create decoder" );
 291             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 292                             _("VLC could not open the decoder module.") );
 293             return NULL;
 294         }
 295     }
 296
 297     if( !p_dec->p_module )
 298     {
 299         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 300
 301         DeleteDecoder( p_dec );
 302         vlc_object_release( p_dec );
 303         return NULL;
 304     }
 305
 306     p_dec->p_owner->p_clock = p_clock;
 307
 308     if( fmt->i_cat == AUDIO_ES )
 309         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 310     else
 311         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 312
 313     /* Spawn the decoder thread */
 314     if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 315                            i_priority, false ) )
 316     {
 317         msg_Err( p_dec, "cannot spawn decoder thread" );
 318         module_unneed( p_dec, p_dec->p_module );
 319         DeleteDecoder( p_dec );
 320         vlc_object_release( p_dec );
 321         return NULL;
 322     }
 323
 324     return p_dec;
 325 }
 326
 327 /**
 328  * Kills a decoder thread and waits until it's finished
 329  *
 330  * \param p_input the input thread
 331  * \param p_es the es descriptor
 332  * \return nothing
 333  */
 334 void input_DecoderDelete( decoder_t *p_dec )
 335 {
 336     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 337
 338     vlc_object_kill( p_dec );
 339
 340     /* Make sure we aren't paused/buffering/waiting anymore */
 341     vlc_mutex_lock( &p_owner->lock );
 342     p_owner->b_paused = false;
 343     p_owner->b_buffering = false;
 344     p_owner->b_flushing = true;
 345     vlc_cond_signal( &p_owner->wait );
 346     vlc_mutex_unlock( &p_owner->lock );
 347
 348     vlc_thread_join( p_dec );
 349     module_unneed( p_dec, p_dec->p_module );
 350
 351     /* */
 352     if( p_dec->p_owner->cc.b_supported )
 353     {
 354         int i;
 355         for( i = 0; i < 4; i++ )
 356             input_DecoderSetCcState( p_dec, false, i );
 357     }
 358
 359     /* Delete decoder configuration */
 360     DeleteDecoder( p_dec );
 361
 362     /* Delete the decoder */
 363     vlc_object_release( p_dec );
 364 }
 365
 366 /**
 367  * Put a block_t in the decoder's fifo.
 368  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 369  *
 370  * \param p_dec the decoder object
 371  * \param p_block the data block
 372  */
 373 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block )
 374 {
 375     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 376
 377     if( p_owner->p_input->p->b_out_pace_control )
 378     {
 379         /* The fifo is not consummed when buffering and so will
 380          * deadlock vlc.
 381          * There is no need to lock as b_buffering is never modify
 382          * inside decoder thread. */
 383         if( !p_owner->b_buffering )
 384             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 385     }
 386     else if( block_FifoSize( p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 387     {
 388         /* FIXME: ideally we would check the time amount of data
 389          * in the FIFO instead of its size. */
 390         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 391                   "consumed quickly enough), resetting fifo!" );
 392         block_FifoEmpty( p_owner->p_fifo );
 393     }
 394
 395     block_FifoPut( p_owner->p_fifo, p_block );
 396 }
 397
 398 bool input_DecoderIsEmpty( decoder_t * p_dec )
 399 {
 400     assert( !p_dec->p_owner->b_buffering );
 401
 402     /* FIXME that's not really true */
 403     return block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 404 }
 405
 406 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 407 {
 408     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 409     int i;
 410
 411     vlc_mutex_lock( &p_owner->lock );
 412     for( i = 0; i < 4; i++ )
 413         pb_present[i] =  p_owner->cc.pb_present[i];
 414     vlc_mutex_unlock( &p_owner->lock );
 415 }
 416 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 417 {
 418     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 419
 420     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 421
 422     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 423         return VLC_EGENERIC;
 424
 425     if( b_decode )
 426     {
 427         static const vlc_fourcc_t fcc[4] = {
 428             VLC_FOURCC('c', 'c', '1', ' '),
 429             VLC_FOURCC('c', 'c', '2', ' '),
 430             VLC_FOURCC('c', 'c', '3', ' '),
 431             VLC_FOURCC('c', 'c', '4', ' '),
 432         };
 433         decoder_t *p_cc;
 434         es_format_t fmt;
 435
 436         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 437         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_owner->p_sout );
 438         if( !p_cc )
 439         {
 440             msg_Err( p_dec, "could not create decoder" );
 441             intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
 442                             _("VLC could not open the decoder module.") );
 443             return VLC_EGENERIC;
 444         }
 445         else if( !p_cc->p_module )
 446         {
 447             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 448             DeleteDecoder( p_cc );
 449             vlc_object_release( p_cc );
 450             return VLC_EGENERIC;
 451         }
 452         p_cc->p_owner->p_clock = p_owner->p_clock;
 453
 454         vlc_mutex_lock( &p_owner->lock );
 455         p_owner->cc.pp_decoder[i_channel] = p_cc;
 456         vlc_mutex_unlock( &p_owner->lock );
 457     }
 458     else
 459     {
 460         decoder_t *p_cc;
 461
 462         vlc_mutex_lock( &p_owner->lock );
 463         p_cc = p_owner->cc.pp_decoder[i_channel];
 464         p_owner->cc.pp_decoder[i_channel] = NULL;
 465         vlc_mutex_unlock( &p_owner->lock );
 466
 467         if( p_cc )
 468         {
 469             vlc_object_kill( p_cc );
 470             module_unneed( p_cc, p_cc->p_module );
 471             DeleteDecoder( p_cc );
 472             vlc_object_release( p_cc );
 473         }
 474     }
 475     return VLC_SUCCESS;
 476 }
 477 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 478 {
 479     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 480
 481     *pb_decode = false;
 482     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 483         return VLC_EGENERIC;
 484
 485     vlc_mutex_lock( &p_owner->lock );
 486     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 487     vlc_mutex_unlock( &p_owner->lock );
 488     return VLC_EGENERIC;
 489 }
 490
 491 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 492 {
 493     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 494
 495     vlc_mutex_lock( &p_owner->lock );
 496
 497     assert( !p_owner->b_paused || !b_paused );
 498
 499     p_owner->b_paused = b_paused;
 500     p_owner->pause.i_date = i_date;
 501     p_owner->pause.i_ignore = 0;
 502     vlc_cond_signal( &p_owner->wait );
 503
 504     DecoderOutputChangePause( p_dec, b_paused, i_date );
 505
 506     vlc_mutex_unlock( &p_owner->lock );
 507 }
 508
 509 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 510 {
 511     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 512
 513     vlc_mutex_lock( &p_owner->lock );
 514     p_owner->i_ts_delay = i_delay;
 515     vlc_mutex_unlock( &p_owner->lock );
 516 }
 517
 518 void input_DecoderStartBuffering( decoder_t *p_dec )
 519 {
 520     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 521
 522     vlc_mutex_lock( &p_owner->lock );
 523
 524     DecoderFlush( p_dec );
 525
 526     p_owner->buffer.b_first = true;
 527     p_owner->buffer.b_full = false;
 528     p_owner->buffer.i_count = 0;
 529
 530     assert( !p_owner->buffer.p_picture && !p_owner->buffer.p_subpic &&
 531             !p_owner->buffer.p_audio && !p_owner->buffer.p_block );
 532
 533     p_owner->buffer.p_picture = NULL;
 534     p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
 535
 536     p_owner->buffer.p_subpic = NULL;
 537     p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
 538
 539     p_owner->buffer.p_audio = NULL;
 540     p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
 541
 542     p_owner->buffer.p_block = NULL;
 543     p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
 544
 545
 546     p_owner->b_buffering = true;
 547
 548     vlc_cond_signal( &p_owner->wait );
 549
 550     vlc_mutex_unlock( &p_owner->lock );
 551 }
 552
 553 void input_DecoderStopBuffering( decoder_t *p_dec )
 554 {
 555     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 556
 557     vlc_mutex_lock( &p_owner->lock );
 558
 559     p_owner->b_buffering = false;
 560
 561     vlc_cond_signal( &p_owner->wait );
 562
 563     vlc_mutex_unlock( &p_owner->lock );
 564 }
 565
 566 void input_DecoderWaitBuffering( decoder_t *p_dec )
 567 {
 568     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 569
 570     vlc_mutex_lock( &p_owner->lock );
 571
 572     while( vlc_object_alive( p_dec ) && p_owner->b_buffering && !p_owner->buffer.b_full )
 573     {
 574         block_FifoWake( p_owner->p_fifo );
 575         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 576     }
 577
 578     vlc_mutex_unlock( &p_owner->lock );
 579 }
 580
 581 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 582 {
 583     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 584
 585     *pi_duration = 0;
 586
 587     vlc_mutex_lock( &p_owner->lock );
 588     if( p_dec->fmt_in.i_cat == VIDEO_ES )
 589     {
 590         if( p_owner->b_paused && p_owner->p_vout )
 591         {
 592             vout_NextPicture( p_owner->p_vout, pi_duration );
 593             p_owner->pause.i_ignore++;
 594             vlc_cond_signal( &p_owner->wait );
 595         }
 596     }
 597     else
 598     {
 599         /* TODO subtitle should not be flushed */
 600         DecoderFlush( p_dec );
 601     }
 602     vlc_mutex_unlock( &p_owner->lock );
 603 }
 604
 605 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
 606 {
 607     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 608     bool b_changed;
 609
 610     vlc_mutex_lock( &p_owner->lock );
 611     b_changed = p_owner->b_fmt_description;
 612     if( b_changed )
 613     {
 614         if( p_fmt )
 615             es_format_Copy( p_fmt, &p_owner->fmt_description );
 616
 617         if( pp_meta )
 618         {
 619             *pp_meta = NULL;
 620             if( p_owner->p_description )
 621             {
 622                 *pp_meta = vlc_meta_New();
 623                 if( *pp_meta )
 624                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
 625             }
 626         }
 627         p_owner->b_fmt_description = false;
 628     }
 629     vlc_mutex_unlock( &p_owner->lock );
 630     return b_changed;
 631 }
 632
 633 /*****************************************************************************
 634  * Internal functions
 635  *****************************************************************************/
 636 static int DecoderGetInputAttachments( decoder_t *p_dec,
 637                                        input_attachment_t ***ppp_attachment,
 638                                        int *pi_attachment )
 639 {
 640     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 641                           ppp_attachment, pi_attachment );
 642 }
 643 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 644 {
 645     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 646
 647     vlc_mutex_lock( &p_owner->lock );
 648     if( p_owner->b_buffering || p_owner->b_paused )
 649         i_ts = 0;
 650     vlc_mutex_unlock( &p_owner->lock );
 651
 652     if( !p_owner->p_clock || !i_ts )
 653         return i_ts;
 654
 655     return input_clock_GetTS( p_owner->p_clock, NULL, p_owner->p_input->i_pts_delay, i_ts );
 656 }
 657 static int DecoderGetDisplayRate( decoder_t *p_dec )
 658 {
 659     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 660
 661     if( !p_owner->p_clock )
 662         return INPUT_RATE_DEFAULT;
 663     return input_clock_GetRate( p_owner->p_clock );
 664 }
 665
 666 /* */
 667 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 668 {
 669     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 670              "VLC probably does not support this sound or video format.",
 671              (char*)&codec );
 672     intf_UserFatal( p_dec, false, _("No suitable decoder module"),
 673                     _("VLC does not support the audio or video format \"%4.4s\". "
 674                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 675 }
 676
 677
 678 /**
 679  * Create a decoder object
 680  *
 681  * \param p_input the input thread
 682  * \param p_es the es descriptor
 683  * \param i_object_type Object type as define in include/vlc_objects.h
 684  * \return the decoder object
 685  */
 686 static decoder_t * CreateDecoder( input_thread_t *p_input,
 687                                   es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
 688 {
 689     decoder_t *p_dec;
 690     decoder_owner_sys_t *p_owner;
 691     int i;
 692
 693     p_dec = vlc_object_create( p_input, i_object_type );
 694     if( p_dec == NULL )
 695         return NULL;
 696
 697     p_dec->pf_decode_audio = NULL;
 698     p_dec->pf_decode_video = NULL;
 699     p_dec->pf_decode_sub = NULL;
 700     p_dec->pf_get_cc = NULL;
 701     p_dec->pf_packetize = NULL;
 702
 703     /* Initialize the decoder */
 704     p_dec->p_module = NULL;
 705
 706     memset( &null_es_format, 0, sizeof(es_format_t) );
 707     es_format_Copy( &p_dec->fmt_in, fmt );
 708     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 709
 710     p_dec->p_description = NULL;
 711
 712     /* Allocate our private structure for the decoder */
 713     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 714     if( p_dec->p_owner == NULL )
 715     {
 716         vlc_object_release( p_dec );
 717         return NULL;
 718     }
 719     p_dec->p_owner->i_preroll_end = -1;
 720     p_dec->p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 721     p_dec->p_owner->p_input = p_input;
 722     p_dec->p_owner->p_aout = NULL;
 723     p_dec->p_owner->p_aout_input = NULL;
 724     p_dec->p_owner->p_vout = NULL;
 725     p_dec->p_owner->p_spu_vout = NULL;
 726     p_dec->p_owner->i_spu_channel = 0;
 727     p_dec->p_owner->i_spu_order = 0;
 728     p_dec->p_owner->p_sout = p_sout;
 729     p_dec->p_owner->p_sout_input = NULL;
 730     p_dec->p_owner->p_packetizer = NULL;
 731
 732     /* decoder fifo */
 733     if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
 734     {
 735         free( p_dec->p_owner );
 736         vlc_object_release( p_dec );
 737         return NULL;
 738     }
 739
 740     /* Set buffers allocation callbacks for the decoders */
 741     p_dec->pf_aout_buffer_new = aout_new_buffer;
 742     p_dec->pf_aout_buffer_del = aout_del_buffer;
 743     p_dec->pf_vout_buffer_new = vout_new_buffer;
 744     p_dec->pf_vout_buffer_del = vout_del_buffer;
 745     p_dec->pf_picture_link    = vout_link_picture;
 746     p_dec->pf_picture_unlink  = vout_unlink_picture;
 747     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 748     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 749     /* */
 750     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 751     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 752     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 753
 754     vlc_object_attach( p_dec, p_input );
 755
 756     /* Find a suitable decoder/packetizer module */
 757     if( i_object_type == VLC_OBJECT_DECODER )
 758         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
 759     else
 760         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
 761
 762     /* Check if decoder requires already packetized data */
 763     if( i_object_type == VLC_OBJECT_DECODER &&
 764         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 765     {
 766         p_dec->p_owner->p_packetizer =
 767             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 768         if( p_dec->p_owner->p_packetizer )
 769         {
 770             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 771                             &p_dec->fmt_in );
 772
 773             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 774                             &null_es_format );
 775
 776             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 777
 778             p_dec->p_owner->p_packetizer->p_module =
 779                 module_need( p_dec->p_owner->p_packetizer,
 780                              "packetizer", "$packetizer", false );
 781
 782             if( !p_dec->p_owner->p_packetizer->p_module )
 783             {
 784                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 785                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 786                 vlc_object_release( p_dec->p_owner->p_packetizer );
 787             }
 788         }
 789     }
 790
 791     /* Copy ourself the input replay gain */
 792     if( fmt->i_cat == AUDIO_ES )
 793     {
 794         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 795         {
 796             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 797             {
 798                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 799                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 800             }
 801             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 802             {
 803                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 804                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 805             }
 806         }
 807     }
 808
 809     /* */
 810     vlc_mutex_init( &p_owner->lock );
 811     vlc_cond_init( &p_owner->wait );
 812
 813     p_owner->b_fmt_description = false;
 814     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 815     p_owner->p_description = NULL;
 816
 817     p_owner->b_paused = false;
 818     p_owner->pause.i_date = 0;
 819     p_owner->pause.i_ignore = 0;
 820
 821     p_owner->b_buffering = false;
 822     p_owner->buffer.b_first = true;
 823     p_owner->buffer.b_full = false;
 824     p_owner->buffer.i_count = 0;
 825     p_owner->buffer.p_picture = NULL;
 826     p_owner->buffer.p_subpic = NULL;
 827     p_owner->buffer.p_audio = NULL;
 828     p_owner->buffer.p_block = NULL;
 829
 830     p_owner->b_flushing = false;
 831
 832     /* */
 833     p_owner->cc.b_supported = false;
 834     if( i_object_type == VLC_OBJECT_DECODER )
 835     {
 836         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 837             p_owner->cc.b_supported = true;
 838         if( p_dec->pf_get_cc )
 839             p_owner->cc.b_supported = true;
 840     }
 841
 842     for( i = 0; i < 4; i++ )
 843     {
 844         p_owner->cc.pb_present[i] = false;
 845         p_owner->cc.pp_decoder[i] = NULL;
 846     }
 847     p_owner->i_ts_delay = 0;
 848     return p_dec;
 849 }
 850
 851 /**
 852  * The decoding main loop
 853  *
 854  * \param p_dec the decoder
 855  */
 856 static void *DecoderThread( vlc_object_t *p_this )
 857 {
 858     decoder_t *p_dec = (decoder_t *)p_this;
 859     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 860
 861     /* The decoder's main loop */
 862     for( ;; )
 863     {
 864         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 865
 866         /* Make sure there is no cancellation point other than this one^^.
 867          * If you need one, be sure to push cleanup of p_block. */
 868         DecoderSignalBuffering( p_dec, p_block == NULL );
 869
 870         if( p_block )
 871         {
 872             int canc = vlc_savecancel();
 873
 874             if( p_dec->b_error )
 875                 DecoderError( p_dec, p_block );
 876             else
 877                 DecoderProcess( p_dec, p_block );
 878
 879             vlc_restorecancel( canc );
 880         }
 881         /* Ensure fast cancellation in case the fifo is not empty */
 882         vlc_testcancel();
 883     }
 884     return NULL;
 885 }
 886
 887 static void DecoderFlush( decoder_t *p_dec )
 888 {
 889     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 890     block_t *p_null;
 891
 892     vlc_assert_locked( &p_owner->lock );
 893
 894     /* Empty the fifo */
 895     block_FifoEmpty( p_owner->p_fifo );
 896
 897     /* Monitor for flush end */
 898     p_owner->b_flushing = true;
 899     vlc_cond_signal( &p_owner->wait );
 900
 901     /* Send a special block */
 902     p_null = block_New( p_dec, 128 );
 903     if( !p_null )
 904         return;
 905     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 906     p_null->i_flags |= BLOCK_FLAG_CORE_FLUSH;
 907     if( !p_dec->fmt_in.b_packetized )
 908         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 909     memset( p_null->p_buffer, 0, p_null->i_buffer );
 910
 911     input_DecoderDecode( p_dec, p_null );
 912
 913     /* */
 914     while( vlc_object_alive( p_dec ) && p_owner->b_flushing )
 915         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 916 }
 917
 918 static void DecoderSignalFlushed( decoder_t *p_dec )
 919 {
 920     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 921
 922     vlc_mutex_lock( &p_owner->lock );
 923
 924     if( p_owner->b_flushing )
 925     {
 926         p_owner->b_flushing = false;
 927         vlc_cond_signal( &p_owner->wait );
 928     }
 929
 930     vlc_mutex_unlock( &p_owner->lock );
 931 }
 932
 933 static void DecoderSignalBuffering( decoder_t *p_dec, bool b_full )
 934 {
 935     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 936
 937     vlc_mutex_lock( &p_owner->lock );
 938
 939     if( p_owner->b_buffering )
 940     {
 941         if( b_full )
 942             p_owner->buffer.b_full = true;
 943         vlc_cond_signal( &p_owner->wait );
 944     }
 945
 946     vlc_mutex_unlock( &p_owner->lock );
 947 }
 948
 949 static bool DecoderIsFlushing( decoder_t *p_dec )
 950 {
 951     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 952     bool b_flushing;
 953
 954     vlc_mutex_lock( &p_owner->lock );
 955
 956     b_flushing = p_owner->b_flushing;
 957
 958     vlc_mutex_unlock( &p_owner->lock );
 959
 960     return b_flushing;
 961 }
 962
 963 static void DecoderWaitUnblock( decoder_t *p_dec, bool *pb_reject )
 964 {
 965     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 966
 967     vlc_assert_locked( &p_owner->lock );
 968
 969     while( !p_owner->b_flushing )
 970     {
 971         if( p_owner->b_paused )
 972         {
 973             if( p_owner->b_buffering && !p_owner->buffer.b_full )
 974                 break;
 975             if( p_owner->pause.i_ignore > 0 )
 976             {
 977                 p_owner->pause.i_ignore--;
 978                 break;
 979             }
 980         }
 981         else
 982         {
 983             if( !p_owner->b_buffering || !p_owner->buffer.b_full )
 984                 break;
 985         }
 986         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 987     }
 988
 989     if( pb_reject )
 990         *pb_reject = p_owner->b_flushing;
 991 }
 992
 993 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 994 {
 995     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 996
 997     vlc_assert_locked( &p_owner->lock );
 998
 999     /* XXX only audio and video output have to be paused.
1000      * - for sout it is useless
1001      * - for subs, it is done by the vout
1002      */
1003     if( p_dec->fmt_in.i_cat == AUDIO_ES )
1004     {
1005         if( p_owner->p_aout && p_owner->p_aout_input )
1006             aout_DecChangePause( p_owner->p_aout, p_owner->p_aout_input,
1007                                  b_paused, i_date );
1008     }
1009     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1010     {
1011         if( p_owner->p_vout )
1012             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1013     }
1014 }
1015 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1016 {
1017     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1018         *pi_preroll = INT64_MAX;
1019     else if( p->i_pts > 0 )
1020         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1021     else if( p->i_dts > 0 )
1022         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1023 }
1024
1025 static mtime_t DecoderTeletextFixTs( mtime_t i_ts, mtime_t i_ts_delay )
1026 {
1027     mtime_t current_date = mdate();
1028
1029     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
1030     if( !i_ts || i_ts > current_date + 10000000 || i_ts < current_date )
1031     {
1032         /* ETSI EN 300 472 Annex A : do not take into account the PTS
1033          * for teletext streams. */
1034         return current_date + 400000 + i_ts_delay;
1035     }
1036     return i_ts;
1037 }
1038
1039 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1040                           mtime_t *pi_duration, int *pi_rate, mtime_t *pi_delay, bool b_telx )
1041 {
1042     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1043     input_clock_t   *p_clock = p_owner->p_clock;
1044     int i_rate = 0;
1045
1046     vlc_assert_locked( &p_owner->lock );
1047
1048     const mtime_t i_ts_delay = p_owner->p_input->i_pts_delay;
1049     const mtime_t i_es_delay = p_owner->i_ts_delay;
1050
1051     if( p_clock )
1052     {
1053         const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1054
1055         if( *pi_ts0 > 0 )
1056             *pi_ts0 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1057                                          *pi_ts0 + i_es_delay );
1058         if( pi_ts1 && *pi_ts1 > 0 )
1059             *pi_ts1 = input_clock_GetTS( p_clock, &i_rate, i_ts_delay,
1060                                          *pi_ts1 + i_es_delay );
1061
1062         /* Do not create ephemere data because of rounding errors */
1063         if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1064             *pi_ts1 += 1;
1065
1066         if( i_rate <= 0 )
1067             i_rate = input_clock_GetRate( p_clock );
1068
1069         if( pi_duration )
1070             *pi_duration = ( *pi_duration * i_rate +
1071                                     INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
1072
1073         if( pi_rate )
1074             *pi_rate = i_rate;
1075
1076         if( b_telx )
1077         {
1078             *pi_ts0 = DecoderTeletextFixTs( *pi_ts0, i_ts_delay );
1079             if( pi_ts1 && *pi_ts1 <= 0 )
1080                 *pi_ts1 = *pi_ts0;
1081         }
1082     }
1083     if( pi_delay )
1084     {
1085         const int r = i_rate > 0 ? i_rate : INPUT_RATE_DEFAULT;
1086         *pi_delay = i_ts_delay + i_es_delay * r / INPUT_RATE_DEFAULT;
1087     }
1088 }
1089
1090 static void DecoderPlayAudio( decoder_t *p_dec, aout_buffer_t *p_audio,
1091                               int *pi_played_sum, int *pi_lost_sum )
1092 {
1093     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1094     aout_instance_t *p_aout = p_owner->p_aout;
1095     aout_input_t    *p_aout_input = p_owner->p_aout_input;
1096
1097     /* */
1098     if( p_audio->start_date <= 0 )
1099     {
1100         msg_Warn( p_dec, "non-dated audio buffer received" );
1101         *pi_lost_sum += 1;
1102         aout_BufferFree( p_audio );
1103         return;
1104     }
1105
1106     /* */
1107     vlc_mutex_lock( &p_owner->lock );
1108
1109     if( p_owner->b_buffering || p_owner->buffer.p_audio )
1110     {
1111         p_audio->p_next = NULL;
1112
1113         *p_owner->buffer.pp_audio_next = p_audio;
1114         p_owner->buffer.pp_audio_next = &p_audio->p_next;
1115
1116         p_owner->buffer.i_count++;
1117         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1118             p_audio->start_date - p_owner->buffer.p_audio->start_date > DECODER_MAX_BUFFERING_AUDIO_DURATION )
1119         {
1120             p_owner->buffer.b_full = true;
1121             vlc_cond_signal( &p_owner->wait );
1122         }
1123     }
1124
1125     for( ;; )
1126     {
1127         bool b_has_more = false;
1128         bool b_reject;
1129         DecoderWaitUnblock( p_dec, &b_reject );
1130
1131         if( p_owner->b_buffering )
1132         {
1133             vlc_mutex_unlock( &p_owner->lock );
1134             return;
1135         }
1136
1137         /* */
1138         if( p_owner->buffer.p_audio )
1139         {
1140             p_audio = p_owner->buffer.p_audio;
1141
1142             p_owner->buffer.p_audio = p_audio->p_next;
1143             p_owner->buffer.i_count--;
1144
1145             b_has_more = p_owner->buffer.p_audio != NULL;
1146             if( !b_has_more )
1147                 p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1148         }
1149
1150         /* */
1151         int i_rate = INPUT_RATE_DEFAULT;
1152         mtime_t i_delay;
1153
1154         DecoderFixTs( p_dec, &p_audio->start_date, &p_audio->end_date, NULL,
1155                       &i_rate, &i_delay, false );
1156
1157         vlc_mutex_unlock( &p_owner->lock );
1158
1159         /* */
1160         const mtime_t i_max_date = mdate() + i_delay + AOUT_MAX_ADVANCE_TIME;
1161
1162         if( !p_aout || !p_aout_input ||
1163             p_audio->start_date <= 0 || p_audio->start_date > i_max_date ||
1164             i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE ||
1165             i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1166             b_reject = true;
1167
1168         /* Do not wait against unprotected date */
1169         const mtime_t i_deadline = p_audio->start_date - AOUT_MAX_PREPARE_TIME;
1170         while( !b_reject && i_deadline > mdate() )
1171         {
1172             vlc_mutex_lock( &p_owner->lock );
1173             if( p_owner->b_flushing || p_dec->b_die )
1174             {
1175                 b_reject = true;
1176                 vlc_mutex_unlock( &p_owner->lock );
1177                 break;
1178             }
1179             vlc_cond_timedwait( &p_owner->wait, &p_owner->lock, i_deadline );
1180             vlc_mutex_unlock( &p_owner->lock );
1181         }
1182
1183         if( !b_reject )
1184         {
1185             if( !aout_DecPlay( p_aout, p_aout_input, p_audio, i_rate ) )
1186                 *pi_played_sum += 1;
1187             *pi_lost_sum += aout_DecGetResetLost( p_aout, p_aout_input );
1188         }
1189         else
1190         {
1191             if( p_audio->start_date <= 0 )
1192             {
1193                 msg_Warn( p_dec, "non-dated audio buffer received" );
1194             }
1195             else if( p_audio->start_date > i_max_date )
1196             {
1197                 msg_Warn( p_aout, "received buffer in the future (%"PRId64")",
1198                           p_audio->start_date - mdate() );
1199             }
1200             *pi_lost_sum += 1;
1201             aout_BufferFree( p_audio );
1202         }
1203
1204         if( !b_has_more )
1205             break;
1206
1207         vlc_mutex_lock( &p_owner->lock );
1208         if( !p_owner->buffer.p_audio )
1209         {
1210             vlc_mutex_unlock( &p_owner->lock );
1211             break;
1212         }
1213     }
1214 }
1215
1216 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1217 {
1218     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1219     input_thread_t  *p_input = p_owner->p_input;
1220     aout_buffer_t   *p_aout_buf;
1221     int i_decoded = 0;
1222     int i_lost = 0;
1223     int i_played = 0;
1224
1225     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1226     {
1227         aout_instance_t *p_aout = p_owner->p_aout;
1228         aout_input_t    *p_aout_input = p_owner->p_aout_input;
1229         int i_lost = 0;
1230         int i_played;
1231
1232         if( p_dec->b_die )
1233         {
1234             /* It prevent freezing VLC in case of broken decoder */
1235             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1236             if( p_block )
1237                 block_Release( p_block );
1238             break;
1239         }
1240         i_decoded++;
1241
1242         if( p_aout_buf->start_date < p_owner->i_preroll_end )
1243         {
1244             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
1245             continue;
1246         }
1247
1248         if( p_owner->i_preroll_end > 0 )
1249         {
1250             msg_Dbg( p_dec, "End of audio preroll" );
1251             if( p_owner->p_aout && p_owner->p_aout_input )
1252                 aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1253             /* */
1254             p_owner->i_preroll_end = -1;
1255         }
1256
1257         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1258     }
1259
1260     /* Update ugly stat */
1261     if( i_decoded > 0 || i_lost > 0 || i_played > 0 )
1262     {
1263         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1264
1265         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_abuffers,
1266                              i_lost, NULL );
1267         stats_UpdateInteger( p_dec, p_input->p->counters.p_played_abuffers,
1268                              i_played, NULL );
1269         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio,
1270                              i_decoded, NULL );
1271
1272         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1273     }
1274 }
1275 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1276 {
1277     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1278     block_t *p_cc;
1279     bool pb_present[4];
1280     int i;
1281     int i_cc_decoder;
1282
1283     assert( p_dec_cc->pf_get_cc != NULL );
1284
1285     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1286     if( !p_owner->cc.b_supported )
1287         return;
1288
1289     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1290     if( !p_cc )
1291         return;
1292
1293     vlc_mutex_lock( &p_owner->lock );
1294     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1295     {
1296         p_owner->cc.pb_present[i] |= pb_present[i];
1297         if( p_owner->cc.pp_decoder[i] )
1298             i_cc_decoder++;
1299     }
1300
1301     for( i = 0; i < 4; i++ )
1302     {
1303         if( !p_owner->cc.pp_decoder[i] )
1304             continue;
1305
1306         if( i_cc_decoder > 1 )
1307             DecoderProcess( p_owner->cc.pp_decoder[i], block_Duplicate( p_cc ) );
1308         else
1309             DecoderProcess( p_owner->cc.pp_decoder[i], p_cc );
1310         i_cc_decoder--;
1311     }
1312     vlc_mutex_unlock( &p_owner->lock );
1313 }
1314
1315 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1316                               int *pi_played_sum, int *pi_lost_sum )
1317 {
1318     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1319     vout_thread_t  *p_vout = p_owner->p_vout;
1320     bool b_first_buffered;
1321
1322     if( p_picture->date <= 0 )
1323     {
1324         msg_Warn( p_vout, "non-dated video buffer received" );
1325         *pi_lost_sum += 1;
1326         vout_DropPicture( p_vout, p_picture );
1327         return;
1328     }
1329
1330     /* */
1331     vlc_mutex_lock( &p_owner->lock );
1332
1333     if( ( p_owner->b_buffering && !p_owner->buffer.b_first ) || p_owner->buffer.p_picture )
1334     {
1335         p_picture->p_next = NULL;
1336
1337         *p_owner->buffer.pp_picture_next = p_picture;
1338         p_owner->buffer.pp_picture_next = &p_picture->p_next;
1339
1340         p_owner->buffer.i_count++;
1341         if( p_owner->buffer.i_count > DECODER_MAX_BUFFERING_COUNT ||
1342             p_picture->date - p_owner->buffer.p_picture->date > DECODER_MAX_BUFFERING_VIDEO_DURATION )
1343         {
1344             p_owner->buffer.b_full = true;
1345             vlc_cond_signal( &p_owner->wait );
1346         }
1347     }
1348     b_first_buffered = p_owner->buffer.p_picture != NULL;
1349
1350     for( ;; b_first_buffered = false )
1351     {
1352         bool b_has_more = false;
1353
1354         bool b_reject;
1355
1356         DecoderWaitUnblock( p_dec, &b_reject );
1357
1358         if( p_owner->b_buffering && !p_owner->buffer.b_first )
1359         {
1360             vlc_mutex_unlock( &p_owner->lock );
1361             return;
1362         }
1363         bool b_buffering_first = p_owner->b_buffering;
1364
1365         /* */
1366         if( p_owner->buffer.p_picture )
1367         {
1368             p_picture = p_owner->buffer.p_picture;
1369
1370             p_owner->buffer.p_picture = p_picture->p_next;
1371             p_owner->buffer.i_count--;
1372
1373             b_has_more = p_owner->buffer.p_picture != NULL;
1374             if( !b_has_more )
1375                 p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1376         }
1377
1378         /* */
1379         if( b_buffering_first )
1380         {
1381             assert( p_owner->buffer.b_first );
1382             assert( !p_owner->buffer.i_count );
1383             msg_Dbg( p_dec, "Received first picture" );
1384             p_owner->buffer.b_first = false;
1385             p_picture->b_force = true;
1386         }
1387
1388         int i_rate = INPUT_RATE_DEFAULT;
1389         mtime_t i_delay;
1390         DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1391                       &i_rate, &i_delay, false );
1392
1393         vlc_mutex_unlock( &p_owner->lock );
1394
1395         /* */
1396         const mtime_t i_max_date = mdate() + i_delay + DECODER_BOGUS_VIDEO_DELAY;
1397
1398         if( !p_picture->b_force && ( p_picture->date <= 0 || p_picture->date >= i_max_date ) )
1399             b_reject = true;
1400
1401         if( !b_reject )
1402         {
1403             if( i_rate != p_owner->i_last_rate || b_first_buffered )
1404             {
1405                 /* Be sure to not display old picture after our own */
1406                 vout_Flush( p_vout, p_picture->date );
1407                 p_owner->i_last_rate = i_rate;
1408             }
1409             vout_DisplayPicture( p_vout, p_picture );
1410         }
1411         else
1412         {
1413             if( p_picture->date <= 0 )
1414             {
1415                 msg_Warn( p_vout, "non-dated video buffer received" );
1416             }
1417             else
1418             {
1419                 msg_Warn( p_vout, "early picture skipped (%"PRId64")",
1420                           p_picture->date - mdate() );
1421             }
1422             *pi_lost_sum += 1;
1423             vout_DropPicture( p_vout, p_picture );
1424         }
1425         int i_tmp_display;
1426         int i_tmp_lost;
1427         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1428
1429         *pi_played_sum += i_tmp_display;
1430         *pi_lost_sum += i_tmp_lost;
1431
1432         if( !b_has_more || b_buffering_first )
1433             break;
1434
1435         vlc_mutex_lock( &p_owner->lock );
1436         if( !p_owner->buffer.p_picture )
1437         {
1438             vlc_mutex_unlock( &p_owner->lock );
1439             break;
1440         }
1441     }
1442 }
1443
1444 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1445 {
1446     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1447     input_thread_t *p_input = p_owner->p_input;
1448     picture_t      *p_pic;
1449     int i_lost = 0;
1450     int i_decoded = 0;
1451     int i_displayed = 0;
1452
1453     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1454     {
1455         vout_thread_t  *p_vout = p_owner->p_vout;
1456         if( p_dec->b_die )
1457         {
1458             /* It prevent freezing VLC in case of broken decoder */
1459             vout_DropPicture( p_vout, p_pic );
1460             if( p_block )
1461                 block_Release( p_block );
1462             break;
1463         }
1464
1465         i_decoded++;
1466
1467         if( p_pic->date < p_owner->i_preroll_end )
1468         {
1469             vout_DropPicture( p_vout, p_pic );
1470             continue;
1471         }
1472
1473         if( p_owner->i_preroll_end > 0 )
1474         {
1475             msg_Dbg( p_dec, "End of video preroll" );
1476             if( p_vout )
1477                 vout_Flush( p_vout, 1 );
1478             /* */
1479             p_owner->i_preroll_end = -1;
1480         }
1481
1482         if( p_dec->pf_get_cc &&
1483             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1484             DecoderGetCc( p_dec, p_dec );
1485
1486         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1487     }
1488     if( i_decoded > 0 || i_lost > 0 || i_displayed > 0 )
1489     {
1490         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1491
1492         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video,
1493                              i_decoded, NULL );
1494         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_pictures,
1495                              i_lost , NULL);
1496
1497         stats_UpdateInteger( p_dec, p_input->p->counters.p_displayed_pictures,
1498                              i_displayed, NULL);
1499
1500         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1501     }
1502 }
1503
1504 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic,
1505                             bool b_telx )
1506 {
1507     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1508     vout_thread_t *p_vout = p_owner->p_spu_vout;
1509
1510     /* */
1511     if( p_subpic->i_start <= 0 )
1512     {
1513         msg_Warn( p_dec, "non-dated spu buffer received" );
1514         subpicture_Delete( p_subpic );
1515         return;
1516     }
1517
1518     /* */
1519     vlc_mutex_lock( &p_owner->lock );
1520
1521     if( p_owner->b_buffering || p_owner->buffer.p_subpic )
1522     {
1523         p_subpic->p_next = NULL;
1524
1525         *p_owner->buffer.pp_subpic_next = p_subpic;
1526         p_owner->buffer.pp_subpic_next = &p_subpic->p_next;
1527
1528         p_owner->buffer.i_count++;
1529         /* XXX it is important to be full after the first one */
1530         if( p_owner->buffer.i_count > 0 )
1531         {
1532             p_owner->buffer.b_full = true;
1533             vlc_cond_signal( &p_owner->wait );
1534         }
1535     }
1536
1537     for( ;; )
1538     {
1539         bool b_has_more = false;
1540         bool b_reject;
1541         DecoderWaitUnblock( p_dec, &b_reject );
1542
1543         if( p_owner->b_buffering )
1544         {
1545             vlc_mutex_unlock( &p_owner->lock );
1546             return;
1547         }
1548
1549         /* */
1550         if( p_owner->buffer.p_subpic )
1551         {
1552             p_subpic = p_owner->buffer.p_subpic;
1553
1554             p_owner->buffer.p_subpic = p_subpic->p_next;
1555             p_owner->buffer.i_count--;
1556
1557             b_has_more = p_owner->buffer.p_subpic != NULL;
1558             if( !b_has_more )
1559                 p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1560         }
1561
1562         /* */
1563         DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1564                       NULL, NULL, b_telx );
1565
1566         vlc_mutex_unlock( &p_owner->lock );
1567
1568         if( !b_reject )
1569             spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
1570         else
1571             subpicture_Delete( p_subpic );
1572
1573         if( !b_has_more )
1574             break;
1575         vlc_mutex_lock( &p_owner->lock );
1576         if( !p_owner->buffer.p_subpic )
1577         {
1578             vlc_mutex_unlock( &p_owner->lock );
1579             break;
1580         }
1581     }
1582 }
1583
1584 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block,
1585                              bool b_telx )
1586 {
1587     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1588
1589     assert( p_owner->p_clock );
1590     assert( !p_sout_block->p_next );
1591
1592     vlc_mutex_lock( &p_owner->lock );
1593
1594     if( p_owner->b_buffering || p_owner->buffer.p_block )
1595     {
1596         block_ChainLastAppend( &p_owner->buffer.pp_block_next, p_sout_block );
1597
1598         p_owner->buffer.i_count++;
1599         /* XXX it is important to be full after the first one */
1600         if( p_owner->buffer.i_count > 0 )
1601         {
1602             p_owner->buffer.b_full = true;
1603             vlc_cond_signal( &p_owner->wait );
1604         }
1605     }
1606
1607     for( ;; )
1608     {
1609         bool b_has_more = false;
1610         bool b_reject;
1611         DecoderWaitUnblock( p_dec, &b_reject );
1612
1613         if( p_owner->b_buffering )
1614         {
1615             vlc_mutex_unlock( &p_owner->lock );
1616             return;
1617         }
1618
1619         /* */
1620         if( p_owner->buffer.p_block )
1621         {
1622             p_sout_block = p_owner->buffer.p_block;
1623
1624             p_owner->buffer.p_block = p_sout_block->p_next;
1625             p_owner->buffer.i_count--;
1626
1627             b_has_more = p_owner->buffer.p_block != NULL;
1628             if( !b_has_more )
1629                 p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1630         }
1631         p_sout_block->p_next = NULL;
1632
1633         DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1634                       &p_sout_block->i_length,
1635                       &p_sout_block->i_rate, NULL, b_telx );
1636
1637         vlc_mutex_unlock( &p_owner->lock );
1638
1639         if( !b_reject )
1640             sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block );
1641         else
1642             block_Release( p_sout_block );
1643
1644         if( !b_has_more )
1645             break;
1646         vlc_mutex_lock( &p_owner->lock );
1647         if( !p_owner->buffer.p_block )
1648         {
1649             vlc_mutex_unlock( &p_owner->lock );
1650             break;
1651         }
1652     }
1653 }
1654
1655 /* */
1656 static void DecoderFlushBuffering( decoder_t *p_dec )
1657 {
1658     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1659
1660     vlc_assert_locked( &p_owner->lock );
1661
1662     while( p_owner->buffer.p_picture )
1663     {
1664         picture_t *p_picture = p_owner->buffer.p_picture;
1665
1666         p_owner->buffer.p_picture = p_picture->p_next;
1667         p_owner->buffer.i_count--;
1668
1669         if( p_owner->p_vout )
1670             vout_DropPicture( p_owner->p_vout, p_picture );
1671
1672         if( !p_owner->buffer.p_picture )
1673             p_owner->buffer.pp_picture_next = &p_owner->buffer.p_picture;
1674     }
1675     while( p_owner->buffer.p_audio )
1676     {
1677         aout_buffer_t *p_audio = p_owner->buffer.p_audio;
1678
1679         p_owner->buffer.p_audio = p_audio->p_next;
1680         p_owner->buffer.i_count--;
1681
1682         aout_BufferFree( p_audio );
1683
1684         if( !p_owner->buffer.p_audio )
1685             p_owner->buffer.pp_audio_next = &p_owner->buffer.p_audio;
1686     }
1687     while( p_owner->buffer.p_subpic )
1688     {
1689         subpicture_t *p_subpic = p_owner->buffer.p_subpic;
1690
1691         p_owner->buffer.p_subpic = p_subpic->p_next;
1692         p_owner->buffer.i_count--;
1693
1694         subpicture_Delete( p_subpic );
1695
1696         if( !p_owner->buffer.p_subpic )
1697             p_owner->buffer.pp_subpic_next = &p_owner->buffer.p_subpic;
1698     }
1699     if( p_owner->buffer.p_block )
1700     {
1701         block_ChainRelease( p_owner->buffer.p_block );
1702
1703         p_owner->buffer.i_count = 0;
1704         p_owner->buffer.p_block = NULL;
1705         p_owner->buffer.pp_block_next = &p_owner->buffer.p_block;
1706     }
1707 }
1708
1709 /* This function process a block for sout
1710  */
1711 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1712 {
1713     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1714     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1715     block_t *p_sout_block;
1716
1717     while( ( p_sout_block =
1718                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1719     {
1720         if( !p_owner->p_sout_input )
1721         {
1722             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1723
1724             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1725             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1726             if( p_dec->fmt_in.psz_language )
1727             {
1728                 if( p_owner->sout.psz_language )
1729                     free( p_owner->sout.psz_language );
1730                 p_owner->sout.psz_language =
1731                     strdup( p_dec->fmt_in.psz_language );
1732             }
1733
1734             p_owner->p_sout_input =
1735                 sout_InputNew( p_owner->p_sout,
1736                                &p_owner->sout );
1737
1738             if( p_owner->p_sout_input == NULL )
1739             {
1740                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1741                          (char *)&p_owner->sout.i_codec );
1742                 p_dec->b_error = true;
1743
1744                 while( p_sout_block )
1745                 {
1746                     block_t *p_next = p_sout_block->p_next;
1747                     block_Release( p_sout_block );
1748                     p_sout_block = p_next;
1749                 }
1750                 break;
1751             }
1752         }
1753
1754         while( p_sout_block )
1755         {
1756             block_t *p_next = p_sout_block->p_next;
1757
1758             p_sout_block->p_next = NULL;
1759
1760             DecoderPlaySout( p_dec, p_sout_block, b_telx );
1761
1762             p_sout_block = p_next;
1763         }
1764
1765         /* For now it's enough, as only sout impact on this flag */
1766         if( p_owner->p_sout->i_out_pace_nocontrol > 0 &&
1767             p_owner->p_input->p->b_out_pace_control )
1768         {
1769             msg_Dbg( p_dec, "switching to sync mode" );
1770             p_owner->p_input->p->b_out_pace_control = false;
1771         }
1772         else if( p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
1773                  !p_owner->p_input->p->b_out_pace_control )
1774         {
1775             msg_Dbg( p_dec, "switching to async mode" );
1776             p_owner->p_input->p->b_out_pace_control = true;
1777         }
1778     }
1779 }
1780
1781 /* This function process a video block
1782  */
1783 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1784 {
1785     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1786
1787     if( p_owner->p_packetizer )
1788     {
1789         block_t *p_packetized_block;
1790         decoder_t *p_packetizer = p_owner->p_packetizer;
1791
1792         while( (p_packetized_block =
1793                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1794         {
1795             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1796             {
1797                 es_format_Clean( &p_dec->fmt_in );
1798                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1799             }
1800             if( p_packetizer->pf_get_cc )
1801                 DecoderGetCc( p_dec, p_packetizer );
1802
1803             while( p_packetized_block )
1804             {
1805                 block_t *p_next = p_packetized_block->p_next;
1806                 p_packetized_block->p_next = NULL;
1807
1808                 DecoderDecodeVideo( p_dec, p_packetized_block );
1809
1810                 p_packetized_block = p_next;
1811             }
1812         }
1813     }
1814     else if( p_block )
1815     {
1816         DecoderDecodeVideo( p_dec, p_block );
1817     }
1818
1819     if( b_flush && p_owner->p_vout )
1820         vout_Flush( p_owner->p_vout, 1 );
1821 }
1822
1823 /* This function process a audio block
1824  */
1825 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1826 {
1827     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1828
1829     if( p_owner->p_packetizer )
1830     {
1831         block_t *p_packetized_block;
1832         decoder_t *p_packetizer = p_owner->p_packetizer;
1833
1834         while( (p_packetized_block =
1835                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1836         {
1837             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1838             {
1839                 es_format_Clean( &p_dec->fmt_in );
1840                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1841             }
1842
1843             while( p_packetized_block )
1844             {
1845                 block_t *p_next = p_packetized_block->p_next;
1846                 p_packetized_block->p_next = NULL;
1847
1848                 DecoderDecodeAudio( p_dec, p_packetized_block );
1849
1850                 p_packetized_block = p_next;
1851             }
1852         }
1853     }
1854     else if( p_block )
1855     {
1856         DecoderDecodeAudio( p_dec, p_block );
1857     }
1858
1859     if( b_flush && p_owner->p_aout && p_owner->p_aout_input )
1860         aout_DecFlush( p_owner->p_aout, p_owner->p_aout_input );
1861 }
1862
1863 /* This function process a subtitle block
1864  */
1865 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1866 {
1867     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1868     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1869
1870     input_thread_t *p_input = p_owner->p_input;
1871     vout_thread_t *p_vout;
1872     subpicture_t *p_spu;
1873
1874     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1875     {
1876         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1877         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1878         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1879
1880         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1881         if( p_vout && p_owner->p_spu_vout == p_vout )
1882         {
1883             /* Preroll does not work very well with subtitle */
1884             if( p_spu->i_start > 0 &&
1885                 p_spu->i_start < p_owner->i_preroll_end &&
1886                 ( p_spu->i_stop <= 0 || p_spu->i_stop < p_owner->i_preroll_end ) )
1887             {
1888                 subpicture_Delete( p_spu );
1889             }
1890             else
1891             {
1892                 DecoderPlaySpu( p_dec, p_spu, b_telx );
1893             }
1894         }
1895         else
1896         {
1897             subpicture_Delete( p_spu );
1898         }
1899         if( p_vout )
1900             vlc_object_release( p_vout );
1901     }
1902
1903     if( b_flush && p_owner->p_spu_vout )
1904     {
1905         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1906
1907         if( p_vout && p_owner->p_spu_vout == p_vout )
1908             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1909                          p_owner->i_spu_channel );
1910
1911         if( p_vout )
1912             vlc_object_release( p_vout );
1913     }
1914 }
1915
1916 /* */
1917 static void DecoderProcessOnFlush( decoder_t *p_dec )
1918 {
1919     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1920
1921     vlc_mutex_lock( &p_owner->lock );
1922     DecoderFlushBuffering( p_dec );
1923     vlc_mutex_unlock( &p_owner->lock );
1924
1925     DecoderSignalFlushed( p_dec );
1926 }
1927 /**
1928  * Decode a block
1929  *
1930  * \param p_dec the decoder object
1931  * \param p_block the block to decode
1932  * \return VLC_SUCCESS or an error code
1933  */
1934 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1935 {
1936     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1937     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1938
1939     if( p_block && p_block->i_buffer <= 0 )
1940     {
1941         assert( !b_flush_request );
1942         block_Release( p_block );
1943         return;
1944     }
1945
1946 #ifdef ENABLE_SOUT
1947     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
1948     {
1949         if( p_block )
1950             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1951
1952         DecoderProcessSout( p_dec, p_block );
1953     }
1954     else
1955 #endif
1956     {
1957         bool b_flush = false;
1958
1959         if( p_block )
1960         {
1961             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1962             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1963
1964             b_flush = !b_flushing && b_flush_request;
1965
1966             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1967         }
1968
1969         if( p_dec->fmt_in.i_cat == AUDIO_ES )
1970         {
1971             DecoderProcessAudio( p_dec, p_block, b_flush );
1972         }
1973         else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1974         {
1975             DecoderProcessVideo( p_dec, p_block, b_flush );
1976         }
1977         else if( p_dec->fmt_in.i_cat == SPU_ES )
1978         {
1979             DecoderProcessSpu( p_dec, p_block, b_flush );
1980         }
1981         else
1982         {
1983             msg_Err( p_dec, "unknown ES format" );
1984             p_dec->b_error = true;
1985         }
1986     }
1987
1988     /* */
1989     if( b_flush_request )
1990         DecoderProcessOnFlush( p_dec );
1991 }
1992
1993 static void DecoderError( decoder_t *p_dec, block_t *p_block )
1994 {
1995     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1996
1997     /* */
1998     if( p_block )
1999         block_Release( p_block );
2000
2001     if( b_flush_request )
2002         DecoderProcessOnFlush( p_dec );
2003 }
2004
2005
2006 /**
2007  * Destroys a decoder object
2008  *
2009  * \param p_dec the decoder object
2010  * \return nothing
2011  */
2012 static void DeleteDecoder( decoder_t * p_dec )
2013 {
2014     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2015
2016     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
2017              (char*)&p_dec->fmt_in.i_codec,
2018              (unsigned)block_FifoCount( p_owner->p_fifo ) );
2019
2020     /* Free all packets still in the decoder fifo. */
2021     block_FifoEmpty( p_owner->p_fifo );
2022     block_FifoRelease( p_owner->p_fifo );
2023
2024     /* */
2025     vlc_mutex_lock( &p_owner->lock );
2026     DecoderFlushBuffering( p_dec );
2027     vlc_mutex_unlock( &p_owner->lock );
2028
2029     /* Cleanup */
2030     if( p_owner->p_aout_input )
2031         aout_DecDelete( p_owner->p_aout, p_owner->p_aout_input );
2032     if( p_owner->p_aout )
2033     {
2034         vlc_object_release( p_owner->p_aout );
2035         p_owner->p_aout = NULL;
2036     }
2037     if( p_owner->p_vout )
2038     {
2039         /* Hack to make sure all the the pictures are freed by the decoder */
2040         vout_FixLeaks( p_owner->p_vout, true );
2041
2042         /* We are about to die. Reattach video output to p_vlc. */
2043         vout_Request( p_dec, p_owner->p_vout, NULL );
2044         input_SendEventVout( p_owner->p_input );
2045     }
2046
2047 #ifdef ENABLE_SOUT
2048     if( p_owner->p_sout_input )
2049     {
2050         sout_InputDelete( p_owner->p_sout_input );
2051         es_format_Clean( &p_owner->sout );
2052     }
2053 #endif
2054
2055     if( p_dec->fmt_in.i_cat == SPU_ES )
2056     {
2057         vout_thread_t *p_vout;
2058
2059         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2060         if( p_vout )
2061         {
2062             if( p_owner->p_spu_vout == p_vout )
2063                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR, p_owner->i_spu_channel );
2064             vlc_object_release( p_vout );
2065         }
2066     }
2067
2068     es_format_Clean( &p_dec->fmt_in );
2069     es_format_Clean( &p_dec->fmt_out );
2070     if( p_dec->p_description )
2071         vlc_meta_Delete( p_dec->p_description );
2072     es_format_Clean( &p_owner->fmt_description );
2073     if( p_owner->p_description )
2074         vlc_meta_Delete( p_owner->p_description );
2075
2076     if( p_owner->p_packetizer )
2077     {
2078         module_unneed( p_owner->p_packetizer,
2079                        p_owner->p_packetizer->p_module );
2080         es_format_Clean( &p_owner->p_packetizer->fmt_in );
2081         es_format_Clean( &p_owner->p_packetizer->fmt_out );
2082         if( p_owner->p_packetizer->p_description )
2083             vlc_meta_Delete( p_owner->p_packetizer->p_description );
2084         vlc_object_detach( p_owner->p_packetizer );
2085         vlc_object_release( p_owner->p_packetizer );
2086     }
2087
2088     vlc_cond_destroy( &p_owner->wait );
2089     vlc_mutex_destroy( &p_owner->lock );
2090
2091     vlc_object_detach( p_dec );
2092
2093     free( p_owner );
2094 }
2095
2096 /*****************************************************************************
2097  * Buffers allocation callbacks for the decoders
2098  *****************************************************************************/
2099 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
2100 {
2101     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2102
2103     vlc_assert_locked( &p_owner->lock );
2104
2105     p_owner->b_fmt_description = true;
2106
2107     /* Copy es_format */
2108     es_format_Clean( &p_owner->fmt_description );
2109     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
2110
2111     /* Move p_description */
2112     if( p_owner->p_description && p_dec->p_description )
2113         vlc_meta_Delete( p_owner->p_description );
2114     p_owner->p_description = p_dec->p_description;
2115     p_dec->p_description = NULL;
2116 }
2117 static vout_thread_t *aout_request_vout( void *p_private,
2118                                          vout_thread_t *p_vout, video_format_t *p_fmt )
2119 {
2120     decoder_t *p_dec = p_private;
2121
2122     p_vout =  vout_Request( p_dec, p_vout, p_fmt );
2123     input_SendEventVout( p_dec->p_owner->p_input );
2124
2125     return p_vout;
2126 }
2127
2128 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
2129 {
2130     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2131     aout_buffer_t *p_buffer;
2132
2133     if( p_owner->p_aout_input != NULL &&
2134         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
2135           p_dec->fmt_out.audio.i_original_channels !=
2136               p_owner->audio.i_original_channels ||
2137           p_dec->fmt_out.audio.i_bytes_per_frame !=
2138               p_owner->audio.i_bytes_per_frame ) )
2139     {
2140         aout_input_t *p_aout_input = p_owner->p_aout_input;
2141
2142         /* Parameters changed, restart the aout */
2143         vlc_mutex_lock( &p_owner->lock );
2144
2145         DecoderFlushBuffering( p_dec );
2146
2147         p_owner->p_aout_input = NULL;
2148         aout_DecDelete( p_owner->p_aout, p_aout_input );
2149
2150         vlc_mutex_unlock( &p_owner->lock );
2151     }
2152
2153     if( p_owner->p_aout_input == NULL )
2154     {
2155         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
2156         audio_sample_format_t format;
2157         aout_input_t *p_aout_input;
2158         aout_instance_t *p_aout;
2159         aout_request_vout_t request_vout;
2160
2161         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
2162         p_owner->audio = p_dec->fmt_out.audio;
2163
2164         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
2165         if( i_force_dolby &&
2166             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
2167                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
2168         {
2169             if( i_force_dolby == 1 )
2170             {
2171                 format.i_original_channels = format.i_original_channels |
2172                                              AOUT_CHAN_DOLBYSTEREO;
2173             }
2174             else /* i_force_dolby == 2 */
2175             {
2176                 format.i_original_channels = format.i_original_channels &
2177                                              ~AOUT_CHAN_DOLBYSTEREO;
2178             }
2179         }
2180
2181         request_vout.pf_request_vout = aout_request_vout;
2182         request_vout.p_private = p_dec;
2183
2184         p_aout = p_owner->p_aout;
2185         p_aout_input = aout_DecNew( p_dec, &p_aout,
2186                                     &format, &p_dec->fmt_out.audio_replay_gain, &request_vout );
2187
2188         vlc_mutex_lock( &p_owner->lock );
2189
2190         p_owner->p_aout = p_aout;
2191         p_owner->p_aout_input = p_aout_input;
2192         DecoderUpdateFormatLocked( p_dec );
2193
2194         vlc_mutex_unlock( &p_owner->lock );
2195
2196         if( p_owner->p_aout_input == NULL )
2197         {
2198             msg_Err( p_dec, "failed to create audio output" );
2199             p_dec->b_error = true;
2200             return NULL;
2201         }
2202         p_dec->fmt_out.audio.i_bytes_per_frame =
2203             p_owner->audio.i_bytes_per_frame;
2204     }
2205
2206     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
2207
2208     return p_buffer;
2209 }
2210
2211 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
2212 {
2213     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2214
2215     aout_DecDeleteBuffer( p_owner->p_aout,
2216                           p_owner->p_aout_input, p_buffer );
2217 }
2218
2219
2220 int vout_CountPictureAvailable( vout_thread_t *p_vout );
2221
2222 static picture_t *vout_new_buffer( decoder_t *p_dec )
2223 {
2224     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2225
2226     if( p_owner->p_vout == NULL ||
2227         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2228         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2229         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
2230         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
2231     {
2232         vout_thread_t *p_vout;
2233
2234         if( !p_dec->fmt_out.video.i_width ||
2235             !p_dec->fmt_out.video.i_height )
2236         {
2237             /* Can't create a new vout without display size */
2238             return NULL;
2239         }
2240
2241         if( !p_dec->fmt_out.video.i_visible_width ||
2242             !p_dec->fmt_out.video.i_visible_height )
2243         {
2244             if( p_dec->fmt_in.video.i_visible_width &&
2245                 p_dec->fmt_in.video.i_visible_height )
2246             {
2247                 p_dec->fmt_out.video.i_visible_width =
2248                     p_dec->fmt_in.video.i_visible_width;
2249                 p_dec->fmt_out.video.i_visible_height =
2250                     p_dec->fmt_in.video.i_visible_height;
2251             }
2252             else
2253             {
2254                 p_dec->fmt_out.video.i_visible_width =
2255                     p_dec->fmt_out.video.i_width;
2256                 p_dec->fmt_out.video.i_visible_height =
2257                     p_dec->fmt_out.video.i_height;
2258             }
2259         }
2260
2261         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
2262             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2263         {
2264             p_dec->fmt_out.video.i_visible_height = 1080;
2265             p_dec->fmt_out.video.i_sar_num *= 135;
2266             p_dec->fmt_out.video.i_sar_den *= 136;
2267             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2268         }
2269
2270         if( !p_dec->fmt_out.video.i_sar_num ||
2271             !p_dec->fmt_out.video.i_sar_den )
2272         {
2273             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
2274               p_dec->fmt_out.video.i_visible_height;
2275
2276             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
2277               p_dec->fmt_out.video.i_visible_width;
2278         }
2279
2280         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
2281                      &p_dec->fmt_out.video.i_sar_den,
2282                      p_dec->fmt_out.video.i_sar_num,
2283                      p_dec->fmt_out.video.i_sar_den, 50000 );
2284
2285         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
2286         p_owner->video = p_dec->fmt_out.video;
2287
2288         vlc_mutex_lock( &p_owner->lock );
2289
2290         DecoderFlushBuffering( p_dec );
2291
2292         p_vout = p_owner->p_vout;
2293         p_owner->p_vout = NULL;
2294         vlc_mutex_unlock( &p_owner->lock );
2295
2296         p_vout = vout_Request( p_dec, p_vout, &p_dec->fmt_out.video );
2297
2298         vlc_mutex_lock( &p_owner->lock );
2299         p_owner->p_vout = p_vout;
2300
2301         DecoderUpdateFormatLocked( p_dec );
2302
2303         vlc_mutex_unlock( &p_owner->lock );
2304
2305         input_SendEventVout( p_owner->p_input );
2306         if( p_vout == NULL )
2307         {
2308             msg_Err( p_dec, "failed to create video output" );
2309             p_dec->b_error = true;
2310             return NULL;
2311         }
2312
2313         if( p_owner->video.i_rmask )
2314             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
2315         if( p_owner->video.i_gmask )
2316             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
2317         if( p_owner->video.i_bmask )
2318             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
2319     }
2320
2321     /* Get a new picture
2322      */
2323     for( ;; )
2324     {
2325         picture_t *p_picture;
2326
2327         if( p_dec->b_die || p_dec->b_error )
2328             return NULL;
2329
2330         /* The video filter chain required that there is always 1 free buffer
2331          * that it will use as temporary one. It will release the temporary
2332          * buffer once its work is done, so this check is safe even if we don't
2333          * lock around both count() and create().
2334          */
2335         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
2336         {
2337             p_picture = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
2338             if( p_picture )
2339                 return p_picture;
2340         }
2341
2342         if( DecoderIsFlushing( p_dec ) )
2343             return NULL;
2344
2345         /* */
2346         DecoderSignalBuffering( p_dec, true );
2347
2348         /* Check the decoder doesn't leak pictures */
2349         vout_FixLeaks( p_owner->p_vout, false );
2350
2351         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2352         msleep( VOUT_OUTMEM_SLEEP );
2353     }
2354 }
2355
2356 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2357 {
2358     vout_DropPicture( p_dec->p_owner->p_vout, p_pic );
2359 }
2360
2361 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2362 {
2363     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
2364 }
2365
2366 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2367 {
2368     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
2369 }
2370
2371 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
2372 {
2373     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2374     vout_thread_t *p_vout = NULL;
2375     subpicture_t *p_subpic;
2376     int i_attempts = 30;
2377
2378     while( i_attempts-- )
2379     {
2380         if( p_dec->b_die || p_dec->b_error )
2381             break;
2382
2383         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2384         if( p_vout )
2385             break;
2386
2387         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2388     }
2389
2390     if( !p_vout )
2391     {
2392         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2393         return NULL;
2394     }
2395
2396     if( p_owner->p_spu_vout != p_vout )
2397     {
2398         vlc_mutex_lock( &p_owner->lock );
2399
2400         DecoderFlushBuffering( p_dec );
2401
2402         vlc_mutex_unlock( &p_owner->lock );
2403
2404         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
2405                      &p_owner->i_spu_channel );
2406         p_owner->i_spu_order = 0;
2407         p_owner->p_spu_vout = p_vout;
2408     }
2409
2410     p_subpic = subpicture_New();
2411     if( p_subpic )
2412     {
2413         p_subpic->i_channel = p_owner->i_spu_channel;
2414         p_subpic->i_order = p_owner->i_spu_order++;
2415         p_subpic->b_subtitle = true;
2416     }
2417
2418     vlc_object_release( p_vout );
2419
2420     return p_subpic;
2421 }
2422
2423 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2424 {
2425     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2426     vout_thread_t *p_vout = NULL;
2427
2428     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
2429     if( !p_vout || p_owner->p_spu_vout != p_vout )
2430     {
2431         if( p_vout )
2432             vlc_object_release( p_vout );
2433         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2434         return;
2435     }
2436
2437     subpicture_Delete( p_subpic );
2438
2439     vlc_object_release( p_vout );
2440 }
2441