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
  43 #include <vlc_interface.h>
  44 #include "audio_output/aout_internal.h"
  45 #include "stream_output/stream_output.h"
  46 #include "input_internal.h"
  47 #include "input_clock.h"
  48 #include "input_decoder.h"
  49
  50 #include "../video_output/vout_internal.h"
  51
  52 static decoder_t *CreateDecoder( input_thread_t *, es_format_t *, int, sout_instance_t *p_sout );
  53 static void       DeleteDecoder( decoder_t * );
  54
  55 static void      *DecoderThread( vlc_object_t * );
  56 static int        DecoderDecode( decoder_t * p_dec, block_t *p_block );
  57 static void       DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date );
  58
  59 /* Buffers allocation callbacks for the decoders */
  60 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  61 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  62
  63 static picture_t *vout_new_buffer( decoder_t * );
  64 static void vout_del_buffer( decoder_t *, picture_t * );
  65 static void vout_link_picture( decoder_t *, picture_t * );
  66 static void vout_unlink_picture( decoder_t *, picture_t * );
  67
  68 static subpicture_t *spu_new_buffer( decoder_t * );
  69 static void spu_del_buffer( decoder_t *, subpicture_t * );
  70
  71 static es_format_t null_es_format;
  72
  73 struct decoder_owner_sys_t
  74 {
  75     bool      b_own_thread;
  76
  77     int64_t         i_preroll_end;
  78
  79     input_thread_t  *p_input;
  80     input_clock_t   *p_clock;
  81
  82     vout_thread_t   *p_spu_vout;
  83     int              i_spu_channel;
  84     int64_t          i_spu_order;
  85
  86     sout_instance_t         *p_sout;
  87     sout_packetizer_input_t *p_sout_input;
  88
  89     /* Some decoders require already packetized data (ie. not truncated) */
  90     decoder_t *p_packetizer;
  91
  92     /* Current format in use by the output */
  93     video_format_t video;
  94     audio_format_t audio;
  95     es_format_t    sout;
  96
  97     /* fifo */
  98     block_fifo_t *p_fifo;
  99
 100     /* Lock for communication with decoder thread */
 101     vlc_mutex_t lock;
 102     vlc_cond_t  wait;
 103
 104     /* -- These variables need locking on write(only) -- */
 105     aout_instance_t *p_aout;
 106     aout_input_t    *p_aout_input;
 107
 108     vout_thread_t   *p_vout;
 109
 110     /* -- Theses variables need locking on read *and* write -- */
 111     /* Pause */
 112     bool b_paused;
 113     mtime_t i_pause_date;
 114     /* CC */
 115     bool b_cc_supported;
 116     bool pb_cc_present[4];
 117     decoder_t *pp_cc[4];
 118 };
 119
 120 /* */
 121 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 122 {
 123     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 124              "VLC probably does not support this sound or video format.",
 125              (char*)&codec );
 126     intf_UserFatal( p_dec, false, _("No suitable decoder module"),
 127                     _("VLC does not support the audio or video format \"%4.4s\". "
 128                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 129 }
 130
 131 /* decoder_GetInputAttachment:
 132  */
 133 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
 134                                                 const char *psz_name )
 135 {
 136     input_attachment_t *p_attachment;
 137     if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
 138         return NULL;
 139     return p_attachment;
 140 }
 141 /* decoder_GetInputAttachments:
 142  */
 143 int decoder_GetInputAttachments( decoder_t *p_dec,
 144                                  input_attachment_t ***ppp_attachment,
 145                                  int *pi_attachment )
 146 {
 147     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 148                           ppp_attachment, pi_attachment );
 149 }
 150 /* decoder_GetDisplayDate:
 151  */
 152 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 153 {
 154     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 155
 156     assert( p_owner->p_clock );
 157     return input_clock_GetTS( p_owner->p_clock, p_owner->p_input->i_pts_delay, i_ts );
 158 }
 159 /* decoder_GetDisplayRate:
 160  */
 161 int decoder_GetDisplayRate( decoder_t *p_dec )
 162 {
 163     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 164
 165     assert( p_owner->p_clock );
 166     return input_clock_GetRate( p_owner->p_clock );
 167 }
 168
 169 /**
 170  * Spawns a new decoder thread
 171  *
 172  * \param p_input the input thread
 173  * \param p_es the es descriptor
 174  * \return the spawned decoder object
 175  */
 176 decoder_t *input_DecoderNew( input_thread_t *p_input,
 177                              es_format_t *fmt, input_clock_t *p_clock, sout_instance_t *p_sout  )
 178 {
 179     decoder_t   *p_dec = NULL;
 180     vlc_value_t val;
 181
 182 #ifndef ENABLE_SOUT
 183     (void)b_force_decoder;
 184 #else
 185     /* If we are in sout mode, search for packetizer module */
 186     if( p_sout )
 187     {
 188         /* Create the decoder configuration structure */
 189         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
 190         if( p_dec == NULL )
 191         {
 192             msg_Err( p_input, "could not create packetizer" );
 193             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 194                             _("VLC could not open the packetizer module.") );
 195             return NULL;
 196         }
 197     }
 198     else
 199 #endif
 200     {
 201         /* Create the decoder configuration structure */
 202         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
 203         if( p_dec == NULL )
 204         {
 205             msg_Err( p_input, "could not create decoder" );
 206             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 207                             _("VLC could not open the decoder module.") );
 208             return NULL;
 209         }
 210     }
 211
 212     if( !p_dec->p_module )
 213     {
 214         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 215
 216         DeleteDecoder( p_dec );
 217         vlc_object_release( p_dec );
 218         return NULL;
 219     }
 220
 221     p_dec->p_owner->p_clock = p_clock;
 222
 223     if( p_sout && p_sout == p_input->p->p_sout && p_input->p->input.b_can_pace_control )
 224     {
 225         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 226         p_dec->p_owner->b_own_thread = false;
 227     }
 228     else
 229     {
 230         var_Get( p_input, "minimize-threads", &val );
 231         p_dec->p_owner->b_own_thread = !val.b_bool;
 232     }
 233
 234     if( p_dec->p_owner->b_own_thread )
 235     {
 236         int i_priority;
 237         if( fmt->i_cat == AUDIO_ES )
 238             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 239         else
 240             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 241
 242         /* Spawn the decoder thread */
 243         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 244                                i_priority, false ) )
 245         {
 246             msg_Err( p_dec, "cannot spawn decoder thread" );
 247             module_unneed( p_dec, p_dec->p_module );
 248             DeleteDecoder( p_dec );
 249             vlc_object_release( p_dec );
 250             return NULL;
 251         }
 252     }
 253
 254     return p_dec;
 255 }
 256
 257 /**
 258  * Kills a decoder thread and waits until it's finished
 259  *
 260  * \param p_input the input thread
 261  * \param p_es the es descriptor
 262  * \return nothing
 263  */
 264 void input_DecoderDelete( decoder_t *p_dec )
 265 {
 266     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 267
 268     vlc_object_kill( p_dec );
 269
 270     if( p_owner->b_own_thread )
 271     {
 272         /* Make sure we aren't paused anymore */
 273         vlc_mutex_lock( &p_owner->lock );
 274         if( p_owner->b_paused )
 275         {
 276             p_owner->b_paused = false;
 277             vlc_cond_signal( &p_owner->wait );
 278         }
 279         vlc_mutex_unlock( &p_owner->lock );
 280
 281         /* Make sure the thread leaves the function by
 282          * sending it an empty block. */
 283         block_t *p_block = block_New( p_dec, 0 );
 284         input_DecoderDecode( p_dec, p_block );
 285
 286         vlc_thread_join( p_dec );
 287
 288         /* Don't module_unneed() here because of the dll loader that wants
 289          * close() in the same thread than open()/decode() */
 290     }
 291     else
 292     {
 293         /* Flush */
 294         input_DecoderDecode( p_dec, NULL );
 295
 296         module_unneed( p_dec, p_dec->p_module );
 297     }
 298
 299     /* */
 300     if( p_dec->p_owner->b_cc_supported )
 301     {
 302         int i;
 303         for( i = 0; i < 4; i++ )
 304             input_DecoderSetCcState( p_dec, false, i );
 305     }
 306
 307     /* Delete decoder configuration */
 308     DeleteDecoder( p_dec );
 309
 310     /* Delete the decoder */
 311     vlc_object_release( p_dec );
 312 }
 313
 314 /**
 315  * Put a block_t in the decoder's fifo.
 316  *
 317  * \param p_dec the decoder object
 318  * \param p_block the data block
 319  */
 320 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 321 {
 322     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 323
 324     if( p_owner->b_own_thread )
 325     {
 326         if( p_owner->p_input->p->b_out_pace_control )
 327         {
 328             /* FIXME !!!!! */
 329             while( !p_dec->b_die && !p_dec->b_error &&
 330                    block_FifoCount( p_owner->p_fifo ) > 10 )
 331             {
 332                 msleep( 1000 );
 333             }
 334         }
 335         else if( block_FifoSize( p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 336         {
 337             /* FIXME: ideally we would check the time amount of data
 338              * in the fifo instead of its size. */
 339             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 340                       "consumed quickly enough), resetting fifo!" );
 341             block_FifoEmpty( p_owner->p_fifo );
 342         }
 343
 344         block_FifoPut( p_owner->p_fifo, p_block );
 345     }
 346     else
 347     {
 348         if( p_dec->b_error || ( p_block && p_block->i_buffer <= 0 ) )
 349         {
 350             if( p_block )
 351                 block_Release( p_block );
 352         }
 353         else
 354         {
 355             DecoderDecode( p_dec, p_block );
 356         }
 357     }
 358 }
 359
 360 void input_DecoderDiscontinuity( decoder_t * p_dec, bool b_flush )
 361 {
 362     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 363     block_t *p_null;
 364
 365     /* Empty the fifo */
 366     if( p_owner->b_own_thread && b_flush )
 367         block_FifoEmpty( p_owner->p_fifo );
 368
 369     /* Send a special block */
 370     p_null = block_New( p_dec, 128 );
 371     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 372     if( b_flush && p_dec->fmt_in.i_cat == SPU_ES )
 373         p_null->i_flags |= BLOCK_FLAG_CORE_FLUSH;
 374     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 375     if( p_owner->p_packetizer && b_flush )
 376         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 377     memset( p_null->p_buffer, 0, p_null->i_buffer );
 378
 379     input_DecoderDecode( p_dec, p_null );
 380 }
 381
 382 bool input_DecoderEmpty( decoder_t * p_dec )
 383 {
 384     if( p_dec->p_owner->b_own_thread &&
 385         block_FifoCount( p_dec->p_owner->p_fifo ) > 0 )
 386     {
 387         return false;
 388     }
 389     return true;
 390 }
 391
 392 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 393 {
 394     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 395     int i;
 396
 397     vlc_mutex_lock( &p_owner->lock );
 398     for( i = 0; i < 4; i++ )
 399         pb_present[i] =  p_owner->pb_cc_present[i];
 400     vlc_mutex_unlock( &p_owner->lock );
 401 }
 402 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 403 {
 404     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 405
 406     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 407
 408     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 409         return VLC_EGENERIC;
 410
 411     if( b_decode )
 412     {
 413         static const vlc_fourcc_t fcc[4] = {
 414             VLC_FOURCC('c', 'c', '1', ' '),
 415             VLC_FOURCC('c', 'c', '2', ' '),
 416             VLC_FOURCC('c', 'c', '3', ' '),
 417             VLC_FOURCC('c', 'c', '4', ' '),
 418         };
 419         decoder_t *p_cc;
 420         es_format_t fmt;
 421
 422         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 423         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_owner->p_sout );
 424         if( !p_cc )
 425         {
 426             msg_Err( p_dec, "could not create decoder" );
 427             intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
 428                             _("VLC could not open the decoder module.") );
 429             return VLC_EGENERIC;
 430         }
 431         else if( !p_cc->p_module )
 432         {
 433             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 434             DeleteDecoder( p_cc );
 435             vlc_object_release( p_cc );
 436             return VLC_EGENERIC;
 437         }
 438         p_cc->p_owner->p_clock = p_owner->p_clock;
 439
 440         vlc_mutex_lock( &p_owner->lock );
 441         p_owner->pp_cc[i_channel] = p_cc;
 442         vlc_mutex_unlock( &p_owner->lock );
 443     }
 444     else
 445     {
 446         decoder_t *p_cc;
 447
 448         vlc_mutex_lock( &p_owner->lock );
 449         p_cc = p_owner->pp_cc[i_channel];
 450         p_owner->pp_cc[i_channel] = NULL;
 451         vlc_mutex_unlock( &p_owner->lock );
 452
 453         if( p_cc )
 454         {
 455             vlc_object_kill( p_cc );
 456             module_unneed( p_cc, p_cc->p_module );
 457             DeleteDecoder( p_cc );
 458             vlc_object_release( p_cc );
 459         }
 460     }
 461     return VLC_SUCCESS;
 462 }
 463 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 464 {
 465     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 466
 467     *pb_decode = false;
 468     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 469         return VLC_EGENERIC;
 470
 471     vlc_mutex_lock( &p_owner->lock );
 472     *pb_decode = p_owner->pp_cc[i_channel] != NULL;
 473     vlc_mutex_unlock( &p_owner->lock );
 474     return VLC_EGENERIC;
 475 }
 476
 477 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 478 {
 479     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 480
 481     vlc_mutex_lock( &p_owner->lock );
 482
 483     assert( (!p_owner->b_paused) != (!b_paused) );
 484     p_owner->b_paused = b_paused;
 485     p_owner->i_pause_date = i_date;
 486     if( p_owner->b_own_thread )
 487         vlc_cond_signal( &p_owner->wait );
 488
 489     DecoderOutputChangePause( p_dec, b_paused, i_date );
 490     vlc_mutex_unlock( &p_owner->lock );
 491 }
 492 /**
 493  * Create a decoder object
 494  *
 495  * \param p_input the input thread
 496  * \param p_es the es descriptor
 497  * \param i_object_type Object type as define in include/vlc_objects.h
 498  * \return the decoder object
 499  */
 500 static decoder_t * CreateDecoder( input_thread_t *p_input,
 501                                   es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
 502 {
 503     decoder_t *p_dec;
 504     decoder_owner_sys_t *p_owner;
 505     int i;
 506
 507     p_dec = vlc_object_create( p_input, i_object_type );
 508     if( p_dec == NULL )
 509         return NULL;
 510
 511     p_dec->pf_decode_audio = NULL;
 512     p_dec->pf_decode_video = NULL;
 513     p_dec->pf_decode_sub = NULL;
 514     p_dec->pf_get_cc = NULL;
 515     p_dec->pf_packetize = NULL;
 516
 517     /* Initialize the decoder fifo */
 518     p_dec->p_module = NULL;
 519
 520     memset( &null_es_format, 0, sizeof(es_format_t) );
 521     es_format_Copy( &p_dec->fmt_in, fmt );
 522     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 523
 524     /* Allocate our private structure for the decoder */
 525     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 526     if( p_dec->p_owner == NULL )
 527     {
 528         vlc_object_release( p_dec );
 529         return NULL;
 530     }
 531     p_dec->p_owner->b_own_thread = true;
 532     p_dec->p_owner->i_preroll_end = -1;
 533     p_dec->p_owner->p_input = p_input;
 534     p_dec->p_owner->p_aout = NULL;
 535     p_dec->p_owner->p_aout_input = NULL;
 536     p_dec->p_owner->p_vout = NULL;
 537     p_dec->p_owner->p_spu_vout = NULL;
 538     p_dec->p_owner->i_spu_channel = 0;
 539     p_dec->p_owner->i_spu_order = 0;
 540     p_dec->p_owner->p_sout = p_sout;
 541     p_dec->p_owner->p_sout_input = NULL;
 542     p_dec->p_owner->p_packetizer = NULL;
 543
 544     /* decoder fifo */
 545     if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
 546     {
 547         free( p_dec->p_owner );
 548         vlc_object_release( p_dec );
 549         return NULL;
 550     }
 551
 552     /* Set buffers allocation callbacks for the decoders */
 553     p_dec->pf_aout_buffer_new = aout_new_buffer;
 554     p_dec->pf_aout_buffer_del = aout_del_buffer;
 555     p_dec->pf_vout_buffer_new = vout_new_buffer;
 556     p_dec->pf_vout_buffer_del = vout_del_buffer;
 557     p_dec->pf_picture_link    = vout_link_picture;
 558     p_dec->pf_picture_unlink  = vout_unlink_picture;
 559     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 560     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 561
 562     vlc_object_attach( p_dec, p_input );
 563
 564     /* Find a suitable decoder/packetizer module */
 565     if( i_object_type == VLC_OBJECT_DECODER )
 566         p_dec->p_module = module_need( p_dec, "decoder", "$codec", 0 );
 567     else
 568         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", 0 );
 569
 570     /* Check if decoder requires already packetized data */
 571     if( i_object_type == VLC_OBJECT_DECODER &&
 572         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 573     {
 574         p_dec->p_owner->p_packetizer =
 575             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 576         if( p_dec->p_owner->p_packetizer )
 577         {
 578             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 579                             &p_dec->fmt_in );
 580
 581             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 582                             &null_es_format );
 583
 584             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 585
 586             p_dec->p_owner->p_packetizer->p_module =
 587                 module_need( p_dec->p_owner->p_packetizer,
 588                              "packetizer", "$packetizer", 0 );
 589
 590             if( !p_dec->p_owner->p_packetizer->p_module )
 591             {
 592                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 593                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 594                 vlc_object_release( p_dec->p_owner->p_packetizer );
 595             }
 596         }
 597     }
 598
 599     /* Copy ourself the input replay gain */
 600     if( fmt->i_cat == AUDIO_ES )
 601     {
 602         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 603         {
 604             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 605             {
 606                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 607                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 608             }
 609             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 610             {
 611                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 612                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 613             }
 614         }
 615     }
 616     /* */
 617     p_owner->b_cc_supported = false;
 618     if( i_object_type == VLC_OBJECT_DECODER )
 619     {
 620         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 621             p_owner->b_cc_supported = true;
 622         if( p_dec->pf_get_cc )
 623             p_owner->b_cc_supported = true;
 624     }
 625
 626     vlc_mutex_init( &p_owner->lock );
 627     vlc_cond_init( &p_owner->wait );
 628     p_owner->b_paused = false;
 629     p_owner->i_pause_date = 0;
 630     for( i = 0; i < 4; i++ )
 631     {
 632         p_owner->pb_cc_present[i] = false;
 633         p_owner->pp_cc[i] = NULL;
 634     }
 635     return p_dec;
 636 }
 637
 638 /**
 639  * The decoding main loop
 640  *
 641  * \param p_dec the decoder
 642  */
 643 static void* DecoderThread( vlc_object_t *p_this )
 644 {
 645     decoder_t *p_dec = (decoder_t *)p_this;
 646     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 647
 648     block_t *p_block;
 649     int canc = vlc_savecancel();
 650
 651     /* The decoder's main loop */
 652     while( vlc_object_alive( p_dec ) && !p_dec->b_error )
 653     {
 654         if( ( p_block = block_FifoGet( p_owner->p_fifo ) ) == NULL )
 655         {
 656             p_dec->b_error = 1;
 657             break;
 658         }
 659
 660         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 661             break;
 662     }
 663
 664     while( vlc_object_alive( p_dec ) )
 665     {
 666         /* Trash all received PES packets */
 667         p_block = block_FifoGet( p_owner->p_fifo );
 668         if( p_block )
 669             block_Release( p_block );
 670     }
 671
 672     /* We do it here because of the dll loader that wants close() in the
 673      * same thread than open()/decode() */
 674     module_unneed( p_dec, p_dec->p_module );
 675     vlc_restorecancel( canc );
 676     return NULL;
 677 }
 678
 679 static void DecoderWaitUnpause( decoder_t *p_dec )
 680 {
 681     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 682
 683     vlc_mutex_lock( &p_owner->lock );
 684
 685     while( p_owner->b_paused )
 686         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 687
 688     vlc_mutex_unlock( &p_owner->lock );
 689 }
 690
 691 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 692 {
 693     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 694
 695     /* XXX only audio and video output have to be paused.
 696      * - for sout it is useless
 697      * - for subs, it is done by the vout
 698      */
 699     if( p_dec->fmt_in.i_cat == AUDIO_ES )
 700     {
 701         // TODO
 702         //if( p_own->p_vout )
 703         //    aout_ChangePause( p_own->p_aout, p_own->p_aout_input, b_paused, i_date );
 704     }
 705     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 706     {
 707         if( p_owner->p_vout )
 708             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
 709     }
 710 }
 711 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 712 {
 713     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 714         *pi_preroll = INT64_MAX;
 715     else if( p->i_pts > 0 )
 716         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 717     else if( p->i_dts > 0 )
 718         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 719 }
 720
 721 static mtime_t DecoderTeletextFixTs( mtime_t i_ts, mtime_t i_ts_delay )
 722 {
 723     mtime_t current_date = mdate();
 724
 725     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
 726     if( !i_ts || i_ts > current_date + 10000000 || i_ts < current_date )
 727     {
 728         /* ETSI EN 300 472 Annex A : do not take into account the PTS
 729          * for teletext streams. */
 730         return current_date + 400000 + i_ts_delay;
 731     }
 732     return i_ts;
 733 }
 734
 735 static void DecoderSoutBufferFixTs( block_t *p_block,
 736                                     input_clock_t *p_clock, mtime_t i_ts_delay,
 737                                     bool b_teletext )
 738 {
 739     assert( p_clock );
 740
 741     p_block->i_rate = input_clock_GetRate( p_clock );
 742
 743     if( p_block->i_dts > 0 )
 744         p_block->i_dts = input_clock_GetTS( p_clock, i_ts_delay, p_block->i_dts );
 745
 746     if( p_block->i_pts > 0 )
 747         p_block->i_pts = input_clock_GetTS( p_clock, i_ts_delay, p_block->i_pts );
 748
 749     if( p_block->i_length > 0 )
 750         p_block->i_length = ( p_block->i_length * p_block->i_rate +
 751                                 INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
 752
 753     if( b_teletext )
 754         p_block->i_pts = DecoderTeletextFixTs( p_block->i_pts, i_ts_delay );
 755 }
 756 static void DecoderAoutBufferFixTs( aout_buffer_t *p_buffer,
 757                                     input_clock_t *p_clock, mtime_t i_ts_delay )
 758 {
 759     /* sout display module does not set clock */
 760     if( !p_clock )
 761         return;
 762
 763     if( p_buffer->start_date )
 764         p_buffer->start_date = input_clock_GetTS( p_clock, i_ts_delay, p_buffer->start_date );
 765
 766     if( p_buffer->end_date )
 767         p_buffer->end_date = input_clock_GetTS( p_clock, i_ts_delay, p_buffer->end_date );
 768 }
 769 static void DecoderVoutBufferFixTs( picture_t *p_picture,
 770                                     input_clock_t *p_clock, mtime_t i_ts_delay )
 771 {
 772     /* sout display module does not set clock */
 773     if( !p_clock )
 774         return;
 775
 776     if( p_picture->date )
 777         p_picture->date = input_clock_GetTS( p_clock, i_ts_delay, p_picture->date );
 778 }
 779 static void DecoderSpuBufferFixTs( subpicture_t *p_subpic,
 780                                    input_clock_t *p_clock, mtime_t i_ts_delay,
 781                                    bool b_teletext )
 782 {
 783     bool b_ephemere = p_subpic->i_start == p_subpic->i_stop;
 784
 785     /* sout display module does not set clock */
 786     if( !p_clock )
 787         return;
 788
 789     if( p_subpic->i_start )
 790         p_subpic->i_start = input_clock_GetTS( p_clock, i_ts_delay, p_subpic->i_start );
 791
 792     if( p_subpic->i_stop )
 793         p_subpic->i_stop = input_clock_GetTS( p_clock, i_ts_delay, p_subpic->i_stop );
 794
 795     /* Do not create ephemere picture because of rounding errors */
 796     if( !b_ephemere && p_subpic->i_start == p_subpic->i_stop )
 797         p_subpic->i_stop++;
 798
 799     if( b_teletext )
 800         p_subpic->i_start = DecoderTeletextFixTs( p_subpic->i_start, i_ts_delay );
 801 }
 802
 803 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 804 {
 805     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 806     input_thread_t  *p_input = p_owner->p_input;
 807     input_clock_t   *p_clock = p_owner->p_clock;
 808     aout_buffer_t   *p_aout_buf;
 809
 810     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 811     {
 812         aout_instance_t *p_aout = p_owner->p_aout;
 813         aout_input_t    *p_aout_input = p_owner->p_aout_input;
 814
 815         if( p_dec->b_die )
 816         {
 817             /* It prevent freezing VLC in case of broken decoder */
 818             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 819             if( p_block )
 820                 block_Release( p_block );
 821             break;
 822         }
 823         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 824         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 825         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 826
 827         if( p_aout_buf->start_date < p_owner->i_preroll_end )
 828         {
 829             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 830             continue;
 831         }
 832
 833         if( p_owner->i_preroll_end > 0 )
 834         {
 835             /* FIXME TODO flush audio output (don't know how to do that) */
 836             msg_Dbg( p_dec, "End of audio preroll" );
 837             p_owner->i_preroll_end = -1;
 838         }
 839
 840         DecoderWaitUnpause( p_dec );
 841
 842         const int i_rate = p_clock ? input_clock_GetRate( p_clock ) : p_block->i_rate;
 843
 844         DecoderAoutBufferFixTs( p_aout_buf, p_clock, p_input->i_pts_delay );
 845         if( i_rate >= INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE &&
 846             i_rate <= INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
 847             aout_DecPlay( p_aout, p_aout_input, p_aout_buf, i_rate );
 848         else
 849             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 850     }
 851 }
 852 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
 853 {
 854     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 855     block_t *p_cc;
 856     bool pb_present[4];
 857     int i;
 858     int i_cc_decoder;
 859
 860     assert( p_dec_cc->pf_get_cc != NULL );
 861
 862     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
 863     if( !p_owner->b_cc_supported )
 864         return;
 865
 866     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
 867     if( !p_cc )
 868         return;
 869
 870     vlc_mutex_lock( &p_owner->lock );
 871     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
 872     {
 873         p_owner->pb_cc_present[i] |= pb_present[i];
 874         if( p_owner->pp_cc[i] )
 875             i_cc_decoder++;
 876     }
 877
 878     for( i = 0; i < 4; i++ )
 879     {
 880         if( !p_owner->pp_cc[i] )
 881             continue;
 882
 883         if( i_cc_decoder > 1 )
 884             DecoderDecode( p_owner->pp_cc[i], block_Duplicate( p_cc ) );
 885         else
 886             DecoderDecode( p_owner->pp_cc[i], p_cc );
 887         i_cc_decoder--;
 888     }
 889     vlc_mutex_unlock( &p_owner->lock );
 890 }
 891 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 892 {
 893     vlc_mutex_lock( &p_vout->picture_lock );
 894
 895     if( p_pic->i_status == READY_PICTURE )
 896     {
 897         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 898         p_pic->date = 1;
 899     }
 900     else if( p_pic->i_refcount > 0 )
 901     {
 902         p_pic->i_status = DISPLAYED_PICTURE;
 903     }
 904     else
 905     {
 906         p_pic->i_status = DESTROYED_PICTURE;
 907         picture_CleanupQuant( p_pic );
 908         p_vout->i_heap_size--;
 909     }
 910
 911     vlc_mutex_unlock( &p_vout->picture_lock );
 912 }
 913 static void VoutFlushPicture( vout_thread_t *p_vout )
 914 {
 915     int i;
 916     vlc_mutex_lock( &p_vout->picture_lock );
 917     for( i = 0; i < p_vout->render.i_pictures; i++ )
 918     {
 919         picture_t *p_pic = p_vout->render.pp_picture[i];
 920
 921         if( p_pic->i_status == READY_PICTURE ||
 922             p_pic->i_status == DISPLAYED_PICTURE )
 923         {
 924             /* We cannot change picture status if it is in READY_PICTURE state,
 925              * Just make sure they won't be displayed */
 926             p_pic->date = 1;
 927         }
 928     }
 929     vlc_mutex_unlock( &p_vout->picture_lock );
 930 }
 931
 932 #if 0
 933 static void DecoderOptimizePtsDelay( decoder_t *p_dec )
 934 {
 935     input_thread_t *p_input = p_dec->p_owner->p_input;
 936     vout_thread_t *p_vout = p_dec->p_owner->p_vout;
 937     input_thread_private_t *p_priv = p_input->p;
 938
 939     picture_t *p_old = NULL;
 940     picture_t *p_young = NULL;
 941     int i;
 942
 943     /* Enable with --auto-adjust-pts-delay */
 944     if( !p_priv->pts_adjust.b_auto_adjust )
 945         return;
 946
 947     for( i = 0; i < I_RENDERPICTURES; i++ )
 948     {
 949         picture_t *p_pic = PP_RENDERPICTURE[i];
 950
 951         if( p_pic->i_status != READY_PICTURE )
 952             continue;
 953
 954         if( !p_old || p_pic->date < p_old->date )
 955             p_old = p_pic;
 956         if( !p_young || p_pic->date > p_young->date )
 957             p_young = p_pic;
 958     }
 959
 960     if( !p_young || !p_old )
 961         return;
 962
 963     /* Try to find if we can reduce the pts
 964      * This first draft is way too simple, and we can't say if the
 965      * algo will converge. It's also full of constants.
 966      * But this simple algo allows to reduce the latency
 967      * to the minimum.
 968      * The whole point of this, is to bypass the pts_delay set
 969      * by the access but also the delay arbitraly set by
 970      * the remote server.
 971      * Actually the remote server's muxer may set up a
 972      * pts<->dts delay in the muxed stream. That is
 973      * why we may end up in having a negative pts_delay,
 974      * to compensate that artificial delay. */
 975     const mtime_t i_buffer_length = p_young->date - p_old->date;
 976     int64_t i_pts_slide = 0;
 977     if( i_buffer_length < 10000 )
 978     {
 979         if( p_priv->pts_adjust.i_num_faulty > 10 )
 980         {
 981             i_pts_slide = __MAX(p_input->i_pts_delay *3 / 2, 10000);
 982             p_priv->pts_adjust.i_num_faulty = 0;
 983         }
 984         if( p_priv->pts_adjust.b_to_high )
 985         {
 986             p_priv->pts_adjust.b_to_high = !p_priv->pts_adjust.b_to_high;
 987             p_priv->pts_adjust.i_num_faulty = 0;
 988         }
 989         p_priv->pts_adjust.i_num_faulty++;
 990     }
 991     else if( i_buffer_length > 100000 )
 992     {
 993         if( p_priv->pts_adjust.i_num_faulty > 25 )
 994         {
 995             i_pts_slide = -i_buffer_length/2;
 996             p_priv->pts_adjust.i_num_faulty = 0;
 997         }
 998         if( p_priv->pts_adjust.b_to_high )
 999         {
1000             p_priv->pts_adjust.b_to_high = !p_priv->pts_adjust.b_to_high;
1001             p_priv->pts_adjust.i_num_faulty = 0;
1002         }
1003         p_priv->pts_adjust.i_num_faulty++;
1004     }
1005     if( i_pts_slide != 0 )
1006     {
1007         const mtime_t i_pts_delay_org = p_input->i_pts_delay;
1008
1009         p_input->i_pts_delay += i_pts_slide;
1010
1011         /* Don't play with the pts delay for more than -2<->3sec */
1012         if( p_input->i_pts_delay < -2000000 )
1013             p_input->i_pts_delay = -2000000;
1014         else if( p_input->i_pts_delay > 3000000 )
1015             p_input->i_pts_delay = 3000000;
1016         i_pts_slide = p_input->i_pts_delay - i_pts_delay_org;
1017
1018         msg_Dbg( p_input, "Sliding the pts by %dms pts delay at %dms picture buffer was %dms",
1019             (int)i_pts_slide/1000, (int)p_input->i_pts_delay/1000, (int)i_buffer_length/1000);
1020
1021         vlc_mutex_lock( &p_vout->picture_lock );
1022         /* Slide all the picture */
1023         for( i = 0; i < I_RENDERPICTURES; i++ )
1024             PP_RENDERPICTURE[i]->date += i_pts_slide;
1025         /* FIXME: slide aout/spu */
1026         vlc_mutex_unlock( &p_vout->picture_lock );
1027     }
1028 }
1029 #endif
1030
1031 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1032 {
1033     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1034     input_thread_t *p_input = p_owner->p_input;
1035     picture_t      *p_pic;
1036
1037     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1038     {
1039         vout_thread_t  *p_vout = p_owner->p_vout;
1040         if( p_dec->b_die )
1041         {
1042             /* It prevent freezing VLC in case of broken decoder */
1043             VoutDisplayedPicture( p_vout, p_pic );
1044             if( p_block )
1045                 block_Release( p_block );
1046             break;
1047         }
1048
1049         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1050         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
1051         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1052
1053         if( p_pic->date < p_owner->i_preroll_end )
1054         {
1055             VoutDisplayedPicture( p_vout, p_pic );
1056             continue;
1057         }
1058
1059         if( p_owner->i_preroll_end > 0 )
1060         {
1061             msg_Dbg( p_dec, "End of video preroll" );
1062             if( p_vout )
1063                 VoutFlushPicture( p_vout );
1064             /* */
1065             p_owner->i_preroll_end = -1;
1066         }
1067
1068         if( p_dec->pf_get_cc &&
1069             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1070             DecoderGetCc( p_dec, p_dec );
1071
1072         DecoderWaitUnpause( p_dec );
1073
1074         DecoderVoutBufferFixTs( p_pic, p_owner->p_clock, p_input->i_pts_delay );
1075
1076         vout_DatePicture( p_vout, p_pic, p_pic->date );
1077
1078         /* Re-enable it but do it right this time */
1079         //DecoderOptimizePtsDelay( p_dec );
1080
1081         vout_DisplayPicture( p_vout, p_pic );
1082     }
1083 }
1084
1085 /**
1086  * Decode a block
1087  *
1088  * \param p_dec the decoder object
1089  * \param p_block the block to decode
1090  * \return VLC_SUCCESS or an error code
1091  */
1092 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
1093 {
1094     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1095     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1096
1097     if( p_block && p_block->i_buffer <= 0 )
1098     {
1099         block_Release( p_block );
1100         return VLC_SUCCESS;
1101     }
1102
1103 #ifdef ENABLE_SOUT
1104     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
1105     {
1106         block_t *p_sout_block;
1107
1108         while( ( p_sout_block =
1109                      p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1110         {
1111             if( !p_owner->p_sout_input )
1112             {
1113                 es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1114
1115                 p_owner->sout.i_group = p_dec->fmt_in.i_group;
1116                 p_owner->sout.i_id = p_dec->fmt_in.i_id;
1117                 if( p_dec->fmt_in.psz_language )
1118                 {
1119                     if( p_owner->sout.psz_language )
1120                         free( p_owner->sout.psz_language );
1121                     p_owner->sout.psz_language =
1122                         strdup( p_dec->fmt_in.psz_language );
1123                 }
1124
1125                 p_owner->p_sout_input =
1126                     sout_InputNew( p_owner->p_sout,
1127                                    &p_owner->sout );
1128
1129                 if( p_owner->p_sout_input == NULL )
1130                 {
1131                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1132                              (char *)&p_owner->sout.i_codec );
1133                     p_dec->b_error = true;
1134
1135                     while( p_sout_block )
1136                     {
1137                         block_t *p_next = p_sout_block->p_next;
1138                         block_Release( p_sout_block );
1139                         p_sout_block = p_next;
1140                     }
1141                     break;
1142                 }
1143             }
1144
1145             while( p_sout_block )
1146             {
1147                 block_t *p_next = p_sout_block->p_next;
1148
1149                 p_sout_block->p_next = NULL;
1150
1151                 DecoderWaitUnpause( p_dec );
1152
1153                 DecoderSoutBufferFixTs( p_sout_block,
1154                                         p_owner->p_clock, p_owner->p_input->i_pts_delay, b_telx );
1155
1156                 sout_InputSendBuffer( p_owner->p_sout_input,
1157                                       p_sout_block );
1158
1159                 p_sout_block = p_next;
1160             }
1161
1162             /* For now it's enough, as only sout impact on this flag */
1163             if( p_owner->p_sout->i_out_pace_nocontrol > 0 &&
1164                 p_owner->p_input->p->b_out_pace_control )
1165             {
1166                 msg_Dbg( p_dec, "switching to sync mode" );
1167                 p_owner->p_input->p->b_out_pace_control = false;
1168             }
1169             else if( p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
1170                      !p_owner->p_input->p->b_out_pace_control )
1171             {
1172                 msg_Dbg( p_dec, "switching to async mode" );
1173                 p_owner->p_input->p->b_out_pace_control = true;
1174             }
1175         }
1176     }
1177     else
1178 #endif
1179     if( p_dec->fmt_in.i_cat == AUDIO_ES )
1180     {
1181         if( p_block )
1182             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1183
1184         if( p_owner->p_packetizer )
1185         {
1186             block_t *p_packetized_block;
1187             decoder_t *p_packetizer = p_owner->p_packetizer;
1188
1189             while( (p_packetized_block =
1190                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1191             {
1192                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1193                 {
1194                     es_format_Clean( &p_dec->fmt_in );
1195                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1196                 }
1197
1198                 while( p_packetized_block )
1199                 {
1200                     block_t *p_next = p_packetized_block->p_next;
1201                     p_packetized_block->p_next = NULL;
1202
1203                     DecoderDecodeAudio( p_dec, p_packetized_block );
1204
1205                     p_packetized_block = p_next;
1206                 }
1207             }
1208         }
1209         else if( p_block )
1210         {
1211             DecoderDecodeAudio( p_dec, p_block );
1212         }
1213     }
1214     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1215     {
1216         if( p_block )
1217             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1218
1219         if( p_owner->p_packetizer )
1220         {
1221             block_t *p_packetized_block;
1222             decoder_t *p_packetizer = p_owner->p_packetizer;
1223
1224             while( (p_packetized_block =
1225                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1226             {
1227                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1228                 {
1229                     es_format_Clean( &p_dec->fmt_in );
1230                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1231                 }
1232                 if( p_packetizer->pf_get_cc )
1233                     DecoderGetCc( p_dec, p_packetizer );
1234
1235                 while( p_packetized_block )
1236                 {
1237                     block_t *p_next = p_packetized_block->p_next;
1238                     p_packetized_block->p_next = NULL;
1239
1240                     DecoderDecodeVideo( p_dec, p_packetized_block );
1241
1242                     p_packetized_block = p_next;
1243                 }
1244             }
1245         }
1246         else if( p_block )
1247         {
1248             DecoderDecodeVideo( p_dec, p_block );
1249         }
1250     }
1251     else if( p_dec->fmt_in.i_cat == SPU_ES )
1252     {
1253         input_thread_t *p_input = p_owner->p_input;
1254         vout_thread_t *p_vout;
1255         subpicture_t *p_spu;
1256         bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1257         bool b_flush = false;
1258
1259         if( p_block )
1260         {
1261             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1262             b_flush = (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH) != 0;
1263         }
1264
1265         if( !b_flushing && b_flush && p_owner->p_spu_vout )
1266         {
1267             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1268
1269             if( p_vout && p_owner->p_spu_vout == p_vout )
1270                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1271                              p_owner->i_spu_channel );
1272
1273             if( p_vout )
1274                 vlc_object_release( p_vout );
1275         }
1276
1277         while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1278         {
1279             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1280             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1281             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1282
1283             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1284             if( p_vout && p_owner->p_spu_vout == p_vout )
1285             {
1286                 /* Preroll does not work very well with subtitle */
1287                 if( p_spu->i_start < p_owner->i_preroll_end &&
1288                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_owner->i_preroll_end ) )
1289                 {
1290                     subpicture_Delete( p_spu );
1291                 }
1292                 else
1293                 {
1294                     DecoderWaitUnpause( p_dec );
1295
1296                     DecoderSpuBufferFixTs( p_spu, p_owner->p_clock, p_input->i_pts_delay, b_telx );
1297                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
1298                 }
1299             }
1300             else
1301             {
1302                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
1303             }
1304             if( p_vout )
1305                 vlc_object_release( p_vout );
1306         }
1307     }
1308     else
1309     {
1310         msg_Err( p_dec, "unknown ES format" );
1311         p_dec->b_error = 1;
1312     }
1313
1314     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
1315 }
1316
1317 /**
1318  * Destroys a decoder object
1319  *
1320  * \param p_dec the decoder object
1321  * \return nothing
1322  */
1323 static void DeleteDecoder( decoder_t * p_dec )
1324 {
1325     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1326
1327     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1328              (char*)&p_dec->fmt_in.i_codec,
1329              (unsigned)block_FifoCount( p_owner->p_fifo ) );
1330
1331     /* Free all packets still in the decoder fifo. */
1332     block_FifoEmpty( p_owner->p_fifo );
1333     block_FifoRelease( p_owner->p_fifo );
1334
1335     /* Cleanup */
1336     if( p_owner->p_aout_input )
1337         aout_DecDelete( p_owner->p_aout, p_owner->p_aout_input );
1338     if( p_owner->p_aout )
1339     {
1340         vlc_object_release( p_owner->p_aout );
1341         p_owner->p_aout = NULL;
1342     }
1343     if( p_owner->p_vout )
1344     {
1345         int i_pic;
1346
1347 #define p_pic p_owner->p_vout->render.pp_picture[i_pic]
1348         /* Hack to make sure all the the pictures are freed by the decoder */
1349         for( i_pic = 0; i_pic < p_owner->p_vout->render.i_pictures;
1350              i_pic++ )
1351         {
1352             if( p_pic->i_status == RESERVED_PICTURE )
1353                 vout_DestroyPicture( p_owner->p_vout, p_pic );
1354             if( p_pic->i_refcount > 0 )
1355                 vout_UnlinkPicture( p_owner->p_vout, p_pic );
1356         }
1357 #undef p_pic
1358
1359         /* We are about to die. Reattach video output to p_vlc. */
1360         vout_Request( p_dec, p_owner->p_vout, NULL );
1361         var_SetBool( p_owner->p_input, "intf-change-vout", true );
1362     }
1363
1364 #ifdef ENABLE_SOUT
1365     if( p_owner->p_sout_input )
1366     {
1367         sout_InputDelete( p_owner->p_sout_input );
1368         es_format_Clean( &p_owner->sout );
1369     }
1370 #endif
1371
1372     if( p_dec->fmt_in.i_cat == SPU_ES )
1373     {
1374         vout_thread_t *p_vout;
1375
1376         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1377         if( p_vout && p_owner->p_spu_vout == p_vout )
1378         {
1379             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1380                          p_owner->i_spu_channel );
1381             vlc_object_release( p_vout );
1382         }
1383     }
1384
1385     es_format_Clean( &p_dec->fmt_in );
1386     es_format_Clean( &p_dec->fmt_out );
1387
1388     if( p_owner->p_packetizer )
1389     {
1390         module_unneed( p_owner->p_packetizer,
1391                        p_owner->p_packetizer->p_module );
1392         es_format_Clean( &p_owner->p_packetizer->fmt_in );
1393         es_format_Clean( &p_owner->p_packetizer->fmt_out );
1394         vlc_object_detach( p_owner->p_packetizer );
1395         vlc_object_release( p_owner->p_packetizer );
1396     }
1397
1398     vlc_cond_destroy( &p_owner->wait );
1399     vlc_mutex_destroy( &p_owner->lock );
1400
1401     vlc_object_detach( p_dec );
1402
1403     free( p_owner );
1404 }
1405
1406 /*****************************************************************************
1407  * Buffers allocation callbacks for the decoders
1408  *****************************************************************************/
1409 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
1410 {
1411     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1412     aout_buffer_t *p_buffer;
1413
1414     if( p_owner->p_aout_input != NULL &&
1415         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
1416           p_dec->fmt_out.audio.i_original_channels !=
1417               p_owner->audio.i_original_channels ||
1418           p_dec->fmt_out.audio.i_bytes_per_frame !=
1419               p_owner->audio.i_bytes_per_frame ) )
1420     {
1421         aout_input_t *p_aout_input = p_owner->p_aout_input;
1422
1423         /* Parameters changed, restart the aout */
1424         vlc_mutex_lock( &p_owner->lock );
1425
1426         p_owner->p_aout_input = NULL;
1427         aout_DecDelete( p_owner->p_aout, p_aout_input );
1428
1429         vlc_mutex_unlock( &p_owner->lock );
1430     }
1431
1432     if( p_owner->p_aout_input == NULL )
1433     {
1434         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
1435         audio_sample_format_t format;
1436         aout_input_t *p_aout_input;
1437         aout_instance_t *p_aout;
1438
1439         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1440         p_owner->audio = p_dec->fmt_out.audio;
1441
1442         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
1443         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
1444                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1445         {
1446             if ( i_force_dolby == 1 )
1447             {
1448                 format.i_original_channels = format.i_original_channels |
1449                                              AOUT_CHAN_DOLBYSTEREO;
1450             }
1451             else /* i_force_dolby == 2 */
1452             {
1453                 format.i_original_channels = format.i_original_channels &
1454                                              ~AOUT_CHAN_DOLBYSTEREO;
1455             }
1456         }
1457
1458         p_aout = p_owner->p_aout;
1459         p_aout_input = aout_DecNew( p_dec, &p_aout,
1460                                     &format, &p_dec->fmt_out.audio_replay_gain );
1461
1462         vlc_mutex_lock( &p_owner->lock );
1463         p_owner->p_aout = p_aout;
1464         p_owner->p_aout_input = p_aout_input;
1465         vlc_mutex_unlock( &p_owner->lock );
1466
1467         if( p_owner->p_aout_input == NULL )
1468         {
1469             msg_Err( p_dec, "failed to create audio output" );
1470             p_dec->b_error = true;
1471             return NULL;
1472         }
1473         p_dec->fmt_out.audio.i_bytes_per_frame =
1474             p_owner->audio.i_bytes_per_frame;
1475     }
1476
1477     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
1478
1479     return p_buffer;
1480 }
1481
1482 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1483 {
1484     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1485
1486     aout_DecDeleteBuffer( p_owner->p_aout,
1487                           p_owner->p_aout_input, p_buffer );
1488 }
1489
1490
1491 int vout_CountPictureAvailable( vout_thread_t *p_vout );
1492
1493 static picture_t *vout_new_buffer( decoder_t *p_dec )
1494 {
1495     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1496     picture_t *p_pic;
1497
1498     if( p_owner->p_vout == NULL ||
1499         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
1500         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
1501         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
1502         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
1503     {
1504         vout_thread_t *p_vout;
1505
1506         if( !p_dec->fmt_out.video.i_width ||
1507             !p_dec->fmt_out.video.i_height )
1508         {
1509             /* Can't create a new vout without display size */
1510             return NULL;
1511         }
1512
1513         if( !p_dec->fmt_out.video.i_visible_width ||
1514             !p_dec->fmt_out.video.i_visible_height )
1515         {
1516             if( p_dec->fmt_in.video.i_visible_width &&
1517                 p_dec->fmt_in.video.i_visible_height )
1518             {
1519                 p_dec->fmt_out.video.i_visible_width =
1520                     p_dec->fmt_in.video.i_visible_width;
1521                 p_dec->fmt_out.video.i_visible_height =
1522                     p_dec->fmt_in.video.i_visible_height;
1523             }
1524             else
1525             {
1526                 p_dec->fmt_out.video.i_visible_width =
1527                     p_dec->fmt_out.video.i_width;
1528                 p_dec->fmt_out.video.i_visible_height =
1529                     p_dec->fmt_out.video.i_height;
1530             }
1531         }
1532
1533         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
1534             var_CreateGetBool( p_dec, "hdtv-fix" ) )
1535         {
1536             p_dec->fmt_out.video.i_visible_height = 1080;
1537             p_dec->fmt_out.video.i_sar_num *= 135;
1538             p_dec->fmt_out.video.i_sar_den *= 136;
1539             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
1540         }
1541
1542         if( !p_dec->fmt_out.video.i_sar_num ||
1543             !p_dec->fmt_out.video.i_sar_den )
1544         {
1545             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
1546               p_dec->fmt_out.video.i_visible_height;
1547
1548             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
1549               p_dec->fmt_out.video.i_visible_width;
1550         }
1551
1552         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
1553                      &p_dec->fmt_out.video.i_sar_den,
1554                      p_dec->fmt_out.video.i_sar_num,
1555                      p_dec->fmt_out.video.i_sar_den, 50000 );
1556
1557         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1558         p_owner->video = p_dec->fmt_out.video;
1559
1560         p_vout = vout_Request( p_dec, p_owner->p_vout,
1561                                &p_dec->fmt_out.video );
1562
1563         vlc_mutex_lock( &p_owner->lock );
1564         p_owner->p_vout = p_vout;
1565         vlc_mutex_unlock( &p_owner->lock );
1566
1567         var_SetBool( p_owner->p_input, "intf-change-vout", true );
1568         if( p_vout == NULL )
1569         {
1570             msg_Err( p_dec, "failed to create video output" );
1571             p_dec->b_error = true;
1572             return NULL;
1573         }
1574
1575         if( p_owner->video.i_rmask )
1576             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
1577         if( p_owner->video.i_gmask )
1578             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
1579         if( p_owner->video.i_bmask )
1580             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
1581     }
1582
1583     /* Get a new picture
1584      */
1585     for( p_pic = NULL; ; )
1586     {
1587         int i_pic, i_ready_pic;
1588
1589         if( p_dec->b_die || p_dec->b_error )
1590             return NULL;
1591
1592         /* The video filter chain required that there is always 1 free buffer
1593          * that it will use as temporary one. It will release the temporary
1594          * buffer once its work is done, so this check is safe even if we don't
1595          * lock around both count() and create().
1596          */
1597         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
1598         {
1599             p_pic = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
1600             if( p_pic )
1601                 break;
1602         }
1603
1604 #define p_pic p_owner->p_vout->render.pp_picture[i_pic]
1605         /* Check the decoder doesn't leak pictures */
1606         for( i_pic = 0, i_ready_pic = 0; i_pic < p_owner->p_vout->render.i_pictures; i_pic++ )
1607         {
1608             if( p_pic->i_status == READY_PICTURE )
1609             {
1610                 i_ready_pic++;
1611                 /* If we have at least 2 ready pictures, wait for the vout thread to
1612                  * process one */
1613                 if( i_ready_pic >= 2 )
1614                     break;
1615
1616                 continue;
1617             }
1618
1619             if( p_pic->i_status == DISPLAYED_PICTURE )
1620             {
1621                 /* If at least one displayed picture is not referenced
1622                  * let vout free it */
1623                 if( p_pic->i_refcount == 0 )
1624                     break;
1625             }
1626         }
1627         if( i_pic == p_owner->p_vout->render.i_pictures )
1628         {
1629             /* Too many pictures are still referenced, there is probably a bug
1630              * with the decoder */
1631             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1632
1633             /* Just free all the pictures */
1634             for( i_pic = 0; i_pic < p_owner->p_vout->render.i_pictures;
1635                  i_pic++ )
1636             {
1637                 if( p_pic->i_status == RESERVED_PICTURE )
1638                     vout_DestroyPicture( p_owner->p_vout, p_pic );
1639                 if( p_pic->i_refcount > 0 )
1640                 vout_UnlinkPicture( p_owner->p_vout, p_pic );
1641             }
1642         }
1643 #undef p_pic
1644
1645         msleep( VOUT_OUTMEM_SLEEP );
1646     }
1647
1648     return p_pic;
1649 }
1650
1651 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1652 {
1653     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1654 }
1655
1656 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1657 {
1658     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1659 }
1660
1661 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1662 {
1663     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1664 }
1665
1666 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1667 {
1668     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1669     vout_thread_t *p_vout = NULL;
1670     subpicture_t *p_subpic;
1671     int i_attempts = 30;
1672
1673     while( i_attempts-- )
1674     {
1675         if( p_dec->b_die || p_dec->b_error )
1676             break;
1677
1678         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1679         if( p_vout )
1680             break;
1681
1682         msleep( VOUT_DISPLAY_DELAY );
1683     }
1684
1685     if( !p_vout )
1686     {
1687         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1688         return NULL;
1689     }
1690
1691     if( p_owner->p_spu_vout != p_vout )
1692     {
1693         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1694                      &p_owner->i_spu_channel );
1695         p_owner->i_spu_order = 0;
1696         p_owner->p_spu_vout = p_vout;
1697     }
1698
1699     p_subpic = subpicture_New();
1700     if( p_subpic )
1701     {
1702         p_subpic->i_channel = p_owner->i_spu_channel;
1703         p_subpic->i_order = p_owner->i_spu_order++;
1704         p_subpic->b_subtitle = true;
1705     }
1706
1707     vlc_object_release( p_vout );
1708
1709     return p_subpic;
1710 }
1711
1712 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1713 {
1714     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1715     vout_thread_t *p_vout = NULL;
1716
1717     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1718     if( !p_vout || p_owner->p_spu_vout != p_vout )
1719     {
1720         if( p_vout )
1721             vlc_object_release( p_vout );
1722         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1723         return;
1724     }
1725
1726     subpicture_Delete( p_subpic );
1727
1728     vlc_object_release( p_vout );
1729 }
1730