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     if( !p_owner->p_clock )
 157         return i_ts;
 158     return input_clock_GetTS( p_owner->p_clock, p_owner->p_input->i_pts_delay, i_ts );
 159 }
 160 /* decoder_GetDisplayRate:
 161  */
 162 int decoder_GetDisplayRate( decoder_t *p_dec )
 163 {
 164     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 165
 166     if( !p_owner->p_clock )
 167         return INPUT_RATE_DEFAULT;
 168     return input_clock_GetRate( p_owner->p_clock );
 169 }
 170
 171 /**
 172  * Spawns a new decoder thread
 173  *
 174  * \param p_input the input thread
 175  * \param p_es the es descriptor
 176  * \return the spawned decoder object
 177  */
 178 decoder_t *input_DecoderNew( input_thread_t *p_input,
 179                              es_format_t *fmt, input_clock_t *p_clock, sout_instance_t *p_sout  )
 180 {
 181     decoder_t   *p_dec = NULL;
 182     vlc_value_t val;
 183
 184 #ifndef ENABLE_SOUT
 185     (void)b_force_decoder;
 186 #else
 187     /* If we are in sout mode, search for packetizer module */
 188     if( p_sout )
 189     {
 190         /* Create the decoder configuration structure */
 191         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
 192         if( p_dec == NULL )
 193         {
 194             msg_Err( p_input, "could not create packetizer" );
 195             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 196                             _("VLC could not open the packetizer module.") );
 197             return NULL;
 198         }
 199     }
 200     else
 201 #endif
 202     {
 203         /* Create the decoder configuration structure */
 204         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
 205         if( p_dec == NULL )
 206         {
 207             msg_Err( p_input, "could not create decoder" );
 208             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 209                             _("VLC could not open the decoder module.") );
 210             return NULL;
 211         }
 212     }
 213
 214     if( !p_dec->p_module )
 215     {
 216         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 217
 218         DeleteDecoder( p_dec );
 219         vlc_object_release( p_dec );
 220         return NULL;
 221     }
 222
 223     p_dec->p_owner->p_clock = p_clock;
 224
 225     if( p_sout && p_sout == p_input->p->p_sout && p_input->p->input.b_can_pace_control )
 226     {
 227         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 228         p_dec->p_owner->b_own_thread = false;
 229     }
 230     else
 231     {
 232         var_Get( p_input, "minimize-threads", &val );
 233         p_dec->p_owner->b_own_thread = !val.b_bool;
 234     }
 235
 236     if( p_dec->p_owner->b_own_thread )
 237     {
 238         int i_priority;
 239         if( fmt->i_cat == AUDIO_ES )
 240             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 241         else
 242             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 243
 244         /* Spawn the decoder thread */
 245         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 246                                i_priority, false ) )
 247         {
 248             msg_Err( p_dec, "cannot spawn decoder thread" );
 249             module_unneed( p_dec, p_dec->p_module );
 250             DeleteDecoder( p_dec );
 251             vlc_object_release( p_dec );
 252             return NULL;
 253         }
 254     }
 255
 256     return p_dec;
 257 }
 258
 259 /**
 260  * Kills a decoder thread and waits until it's finished
 261  *
 262  * \param p_input the input thread
 263  * \param p_es the es descriptor
 264  * \return nothing
 265  */
 266 void input_DecoderDelete( decoder_t *p_dec )
 267 {
 268     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 269
 270     vlc_object_kill( p_dec );
 271
 272     if( p_owner->b_own_thread )
 273     {
 274         /* Make sure we aren't paused anymore */
 275         vlc_mutex_lock( &p_owner->lock );
 276         if( p_owner->b_paused )
 277         {
 278             p_owner->b_paused = false;
 279             vlc_cond_signal( &p_owner->wait );
 280         }
 281         vlc_mutex_unlock( &p_owner->lock );
 282
 283         /* Make sure the thread leaves the function by
 284          * sending it an empty block. */
 285         block_t *p_block = block_New( p_dec, 0 );
 286         input_DecoderDecode( p_dec, p_block );
 287
 288         vlc_thread_join( p_dec );
 289
 290         /* Don't module_unneed() here because of the dll loader that wants
 291          * close() in the same thread than open()/decode() */
 292     }
 293     else
 294     {
 295         /* Flush */
 296         input_DecoderDecode( p_dec, NULL );
 297
 298         module_unneed( p_dec, p_dec->p_module );
 299     }
 300
 301     /* */
 302     if( p_dec->p_owner->b_cc_supported )
 303     {
 304         int i;
 305         for( i = 0; i < 4; i++ )
 306             input_DecoderSetCcState( p_dec, false, i );
 307     }
 308
 309     /* Delete decoder configuration */
 310     DeleteDecoder( p_dec );
 311
 312     /* Delete the decoder */
 313     vlc_object_release( p_dec );
 314 }
 315
 316 /**
 317  * Put a block_t in the decoder's fifo.
 318  *
 319  * \param p_dec the decoder object
 320  * \param p_block the data block
 321  */
 322 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 323 {
 324     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 325
 326     if( p_owner->b_own_thread )
 327     {
 328         if( p_owner->p_input->p->b_out_pace_control )
 329         {
 330             /* FIXME !!!!! */
 331             while( !p_dec->b_die && !p_dec->b_error &&
 332                    block_FifoCount( p_owner->p_fifo ) > 10 )
 333             {
 334                 msleep( 1000 );
 335             }
 336         }
 337         else if( block_FifoSize( p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 338         {
 339             /* FIXME: ideally we would check the time amount of data
 340              * in the fifo instead of its size. */
 341             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 342                       "consumed quickly enough), resetting fifo!" );
 343             block_FifoEmpty( p_owner->p_fifo );
 344         }
 345
 346         block_FifoPut( p_owner->p_fifo, p_block );
 347     }
 348     else
 349     {
 350         if( p_dec->b_error || ( p_block && p_block->i_buffer <= 0 ) )
 351         {
 352             if( p_block )
 353                 block_Release( p_block );
 354         }
 355         else
 356         {
 357             DecoderDecode( p_dec, p_block );
 358         }
 359     }
 360 }
 361
 362 void input_DecoderDiscontinuity( decoder_t * p_dec, bool b_flush )
 363 {
 364     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 365     block_t *p_null;
 366
 367     /* Empty the fifo */
 368     if( p_owner->b_own_thread && b_flush )
 369         block_FifoEmpty( p_owner->p_fifo );
 370
 371     /* Send a special block */
 372     p_null = block_New( p_dec, 128 );
 373     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 374     if( b_flush && p_dec->fmt_in.i_cat == SPU_ES )
 375         p_null->i_flags |= BLOCK_FLAG_CORE_FLUSH;
 376     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 377     if( p_owner->p_packetizer && b_flush )
 378         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 379     memset( p_null->p_buffer, 0, p_null->i_buffer );
 380
 381     input_DecoderDecode( p_dec, p_null );
 382 }
 383
 384 bool input_DecoderEmpty( decoder_t * p_dec )
 385 {
 386     if( p_dec->p_owner->b_own_thread &&
 387         block_FifoCount( p_dec->p_owner->p_fifo ) > 0 )
 388     {
 389         return false;
 390     }
 391     return true;
 392 }
 393
 394 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 395 {
 396     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 397     int i;
 398
 399     vlc_mutex_lock( &p_owner->lock );
 400     for( i = 0; i < 4; i++ )
 401         pb_present[i] =  p_owner->pb_cc_present[i];
 402     vlc_mutex_unlock( &p_owner->lock );
 403 }
 404 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 405 {
 406     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 407
 408     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 409
 410     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 411         return VLC_EGENERIC;
 412
 413     if( b_decode )
 414     {
 415         static const vlc_fourcc_t fcc[4] = {
 416             VLC_FOURCC('c', 'c', '1', ' '),
 417             VLC_FOURCC('c', 'c', '2', ' '),
 418             VLC_FOURCC('c', 'c', '3', ' '),
 419             VLC_FOURCC('c', 'c', '4', ' '),
 420         };
 421         decoder_t *p_cc;
 422         es_format_t fmt;
 423
 424         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 425         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_owner->p_sout );
 426         if( !p_cc )
 427         {
 428             msg_Err( p_dec, "could not create decoder" );
 429             intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
 430                             _("VLC could not open the decoder module.") );
 431             return VLC_EGENERIC;
 432         }
 433         else if( !p_cc->p_module )
 434         {
 435             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 436             DeleteDecoder( p_cc );
 437             vlc_object_release( p_cc );
 438             return VLC_EGENERIC;
 439         }
 440         p_cc->p_owner->p_clock = p_owner->p_clock;
 441
 442         vlc_mutex_lock( &p_owner->lock );
 443         p_owner->pp_cc[i_channel] = p_cc;
 444         vlc_mutex_unlock( &p_owner->lock );
 445     }
 446     else
 447     {
 448         decoder_t *p_cc;
 449
 450         vlc_mutex_lock( &p_owner->lock );
 451         p_cc = p_owner->pp_cc[i_channel];
 452         p_owner->pp_cc[i_channel] = NULL;
 453         vlc_mutex_unlock( &p_owner->lock );
 454
 455         if( p_cc )
 456         {
 457             vlc_object_kill( p_cc );
 458             module_unneed( p_cc, p_cc->p_module );
 459             DeleteDecoder( p_cc );
 460             vlc_object_release( p_cc );
 461         }
 462     }
 463     return VLC_SUCCESS;
 464 }
 465 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 466 {
 467     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 468
 469     *pb_decode = false;
 470     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 471         return VLC_EGENERIC;
 472
 473     vlc_mutex_lock( &p_owner->lock );
 474     *pb_decode = p_owner->pp_cc[i_channel] != NULL;
 475     vlc_mutex_unlock( &p_owner->lock );
 476     return VLC_EGENERIC;
 477 }
 478
 479 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 480 {
 481     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 482
 483     vlc_mutex_lock( &p_owner->lock );
 484
 485     assert( (!p_owner->b_paused) != (!b_paused) );
 486     p_owner->b_paused = b_paused;
 487     p_owner->i_pause_date = i_date;
 488     if( p_owner->b_own_thread )
 489         vlc_cond_signal( &p_owner->wait );
 490
 491     DecoderOutputChangePause( p_dec, b_paused, i_date );
 492     vlc_mutex_unlock( &p_owner->lock );
 493 }
 494 /**
 495  * Create a decoder object
 496  *
 497  * \param p_input the input thread
 498  * \param p_es the es descriptor
 499  * \param i_object_type Object type as define in include/vlc_objects.h
 500  * \return the decoder object
 501  */
 502 static decoder_t * CreateDecoder( input_thread_t *p_input,
 503                                   es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
 504 {
 505     decoder_t *p_dec;
 506     decoder_owner_sys_t *p_owner;
 507     int i;
 508
 509     p_dec = vlc_object_create( p_input, i_object_type );
 510     if( p_dec == NULL )
 511         return NULL;
 512
 513     p_dec->pf_decode_audio = NULL;
 514     p_dec->pf_decode_video = NULL;
 515     p_dec->pf_decode_sub = NULL;
 516     p_dec->pf_get_cc = NULL;
 517     p_dec->pf_packetize = NULL;
 518
 519     /* Initialize the decoder fifo */
 520     p_dec->p_module = NULL;
 521
 522     memset( &null_es_format, 0, sizeof(es_format_t) );
 523     es_format_Copy( &p_dec->fmt_in, fmt );
 524     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 525
 526     /* Allocate our private structure for the decoder */
 527     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 528     if( p_dec->p_owner == NULL )
 529     {
 530         vlc_object_release( p_dec );
 531         return NULL;
 532     }
 533     p_dec->p_owner->b_own_thread = true;
 534     p_dec->p_owner->i_preroll_end = -1;
 535     p_dec->p_owner->p_input = p_input;
 536     p_dec->p_owner->p_aout = NULL;
 537     p_dec->p_owner->p_aout_input = NULL;
 538     p_dec->p_owner->p_vout = NULL;
 539     p_dec->p_owner->p_spu_vout = NULL;
 540     p_dec->p_owner->i_spu_channel = 0;
 541     p_dec->p_owner->i_spu_order = 0;
 542     p_dec->p_owner->p_sout = p_sout;
 543     p_dec->p_owner->p_sout_input = NULL;
 544     p_dec->p_owner->p_packetizer = NULL;
 545
 546     /* decoder fifo */
 547     if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
 548     {
 549         free( p_dec->p_owner );
 550         vlc_object_release( p_dec );
 551         return NULL;
 552     }
 553
 554     /* Set buffers allocation callbacks for the decoders */
 555     p_dec->pf_aout_buffer_new = aout_new_buffer;
 556     p_dec->pf_aout_buffer_del = aout_del_buffer;
 557     p_dec->pf_vout_buffer_new = vout_new_buffer;
 558     p_dec->pf_vout_buffer_del = vout_del_buffer;
 559     p_dec->pf_picture_link    = vout_link_picture;
 560     p_dec->pf_picture_unlink  = vout_unlink_picture;
 561     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 562     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 563
 564     vlc_object_attach( p_dec, p_input );
 565
 566     /* Find a suitable decoder/packetizer module */
 567     if( i_object_type == VLC_OBJECT_DECODER )
 568         p_dec->p_module = module_need( p_dec, "decoder", "$codec", 0 );
 569     else
 570         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", 0 );
 571
 572     /* Check if decoder requires already packetized data */
 573     if( i_object_type == VLC_OBJECT_DECODER &&
 574         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 575     {
 576         p_dec->p_owner->p_packetizer =
 577             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 578         if( p_dec->p_owner->p_packetizer )
 579         {
 580             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 581                             &p_dec->fmt_in );
 582
 583             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 584                             &null_es_format );
 585
 586             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 587
 588             p_dec->p_owner->p_packetizer->p_module =
 589                 module_need( p_dec->p_owner->p_packetizer,
 590                              "packetizer", "$packetizer", 0 );
 591
 592             if( !p_dec->p_owner->p_packetizer->p_module )
 593             {
 594                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 595                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 596                 vlc_object_release( p_dec->p_owner->p_packetizer );
 597             }
 598         }
 599     }
 600
 601     /* Copy ourself the input replay gain */
 602     if( fmt->i_cat == AUDIO_ES )
 603     {
 604         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 605         {
 606             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 607             {
 608                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 609                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 610             }
 611             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 612             {
 613                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 614                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 615             }
 616         }
 617     }
 618     /* */
 619     p_owner->b_cc_supported = false;
 620     if( i_object_type == VLC_OBJECT_DECODER )
 621     {
 622         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 623             p_owner->b_cc_supported = true;
 624         if( p_dec->pf_get_cc )
 625             p_owner->b_cc_supported = true;
 626     }
 627
 628     vlc_mutex_init( &p_owner->lock );
 629     vlc_cond_init( &p_owner->wait );
 630     p_owner->b_paused = false;
 631     p_owner->i_pause_date = 0;
 632     for( i = 0; i < 4; i++ )
 633     {
 634         p_owner->pb_cc_present[i] = false;
 635         p_owner->pp_cc[i] = NULL;
 636     }
 637     return p_dec;
 638 }
 639
 640 /**
 641  * The decoding main loop
 642  *
 643  * \param p_dec the decoder
 644  */
 645 static void* DecoderThread( vlc_object_t *p_this )
 646 {
 647     decoder_t *p_dec = (decoder_t *)p_this;
 648     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 649
 650     block_t *p_block;
 651     int canc = vlc_savecancel();
 652
 653     /* The decoder's main loop */
 654     while( vlc_object_alive( p_dec ) && !p_dec->b_error )
 655     {
 656         if( ( p_block = block_FifoGet( p_owner->p_fifo ) ) == NULL )
 657         {
 658             p_dec->b_error = 1;
 659             break;
 660         }
 661
 662         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 663             break;
 664     }
 665
 666     while( vlc_object_alive( p_dec ) )
 667     {
 668         /* Trash all received PES packets */
 669         p_block = block_FifoGet( p_owner->p_fifo );
 670         if( p_block )
 671             block_Release( p_block );
 672     }
 673
 674     /* We do it here because of the dll loader that wants close() in the
 675      * same thread than open()/decode() */
 676     module_unneed( p_dec, p_dec->p_module );
 677     vlc_restorecancel( canc );
 678     return NULL;
 679 }
 680
 681 static void DecoderWaitUnpause( decoder_t *p_dec )
 682 {
 683     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 684
 685     vlc_mutex_lock( &p_owner->lock );
 686
 687     while( p_owner->b_paused )
 688         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 689
 690     vlc_mutex_unlock( &p_owner->lock );
 691 }
 692
 693 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 694 {
 695     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 696
 697     /* XXX only audio and video output have to be paused.
 698      * - for sout it is useless
 699      * - for subs, it is done by the vout
 700      */
 701     if( p_dec->fmt_in.i_cat == AUDIO_ES )
 702     {
 703         // TODO
 704         //if( p_own->p_vout )
 705         //    aout_ChangePause( p_own->p_aout, p_own->p_aout_input, b_paused, i_date );
 706     }
 707     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 708     {
 709         if( p_owner->p_vout )
 710             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
 711     }
 712 }
 713 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 714 {
 715     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 716         *pi_preroll = INT64_MAX;
 717     else if( p->i_pts > 0 )
 718         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 719     else if( p->i_dts > 0 )
 720         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 721 }
 722
 723 static mtime_t DecoderTeletextFixTs( mtime_t i_ts, mtime_t i_ts_delay )
 724 {
 725     mtime_t current_date = mdate();
 726
 727     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
 728     if( !i_ts || i_ts > current_date + 10000000 || i_ts < current_date )
 729     {
 730         /* ETSI EN 300 472 Annex A : do not take into account the PTS
 731          * for teletext streams. */
 732         return current_date + 400000 + i_ts_delay;
 733     }
 734     return i_ts;
 735 }
 736
 737 static void DecoderSoutBufferFixTs( block_t *p_block,
 738                                     input_clock_t *p_clock, mtime_t i_ts_delay,
 739                                     bool b_teletext )
 740 {
 741     assert( p_clock );
 742
 743     p_block->i_rate = input_clock_GetRate( p_clock );
 744
 745     if( p_block->i_dts > 0 )
 746         p_block->i_dts = input_clock_GetTS( p_clock, i_ts_delay, p_block->i_dts );
 747
 748     if( p_block->i_pts > 0 )
 749         p_block->i_pts = input_clock_GetTS( p_clock, i_ts_delay, p_block->i_pts );
 750
 751     if( p_block->i_length > 0 )
 752         p_block->i_length = ( p_block->i_length * p_block->i_rate +
 753                                 INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
 754
 755     if( b_teletext )
 756         p_block->i_pts = DecoderTeletextFixTs( p_block->i_pts, i_ts_delay );
 757 }
 758 static void DecoderAoutBufferFixTs( aout_buffer_t *p_buffer,
 759                                     input_clock_t *p_clock, mtime_t i_ts_delay )
 760 {
 761     /* sout display module does not set clock */
 762     if( !p_clock )
 763         return;
 764
 765     if( p_buffer->start_date )
 766         p_buffer->start_date = input_clock_GetTS( p_clock, i_ts_delay, p_buffer->start_date );
 767
 768     if( p_buffer->end_date )
 769         p_buffer->end_date = input_clock_GetTS( p_clock, i_ts_delay, p_buffer->end_date );
 770 }
 771 static void DecoderVoutBufferFixTs( picture_t *p_picture,
 772                                     input_clock_t *p_clock, mtime_t i_ts_delay )
 773 {
 774     /* sout display module does not set clock */
 775     if( !p_clock )
 776         return;
 777
 778     if( p_picture->date )
 779         p_picture->date = input_clock_GetTS( p_clock, i_ts_delay, p_picture->date );
 780 }
 781 static void DecoderSpuBufferFixTs( subpicture_t *p_subpic,
 782                                    input_clock_t *p_clock, mtime_t i_ts_delay,
 783                                    bool b_teletext )
 784 {
 785     bool b_ephemere = p_subpic->i_start == p_subpic->i_stop;
 786
 787     /* sout display module does not set clock */
 788     if( !p_clock )
 789         return;
 790
 791     if( p_subpic->i_start )
 792         p_subpic->i_start = input_clock_GetTS( p_clock, i_ts_delay, p_subpic->i_start );
 793
 794     if( p_subpic->i_stop )
 795         p_subpic->i_stop = input_clock_GetTS( p_clock, i_ts_delay, p_subpic->i_stop );
 796
 797     /* Do not create ephemere picture because of rounding errors */
 798     if( !b_ephemere && p_subpic->i_start == p_subpic->i_stop )
 799         p_subpic->i_stop++;
 800
 801     if( b_teletext )
 802         p_subpic->i_start = DecoderTeletextFixTs( p_subpic->i_start, i_ts_delay );
 803 }
 804
 805 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 806 {
 807     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 808     input_thread_t  *p_input = p_owner->p_input;
 809     input_clock_t   *p_clock = p_owner->p_clock;
 810     aout_buffer_t   *p_aout_buf;
 811
 812     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 813     {
 814         aout_instance_t *p_aout = p_owner->p_aout;
 815         aout_input_t    *p_aout_input = p_owner->p_aout_input;
 816
 817         if( p_dec->b_die )
 818         {
 819             /* It prevent freezing VLC in case of broken decoder */
 820             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 821             if( p_block )
 822                 block_Release( p_block );
 823             break;
 824         }
 825         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 826         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 827         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 828
 829         if( p_aout_buf->start_date < p_owner->i_preroll_end )
 830         {
 831             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 832             continue;
 833         }
 834
 835         if( p_owner->i_preroll_end > 0 )
 836         {
 837             /* FIXME TODO flush audio output (don't know how to do that) */
 838             msg_Dbg( p_dec, "End of audio preroll" );
 839             p_owner->i_preroll_end = -1;
 840         }
 841
 842         DecoderWaitUnpause( p_dec );
 843
 844         const int i_rate = p_clock ? input_clock_GetRate( p_clock ) : p_block->i_rate;
 845
 846         DecoderAoutBufferFixTs( p_aout_buf, p_clock, p_input->i_pts_delay );
 847         if( i_rate >= INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE &&
 848             i_rate <= INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
 849             aout_DecPlay( p_aout, p_aout_input, p_aout_buf, i_rate );
 850         else
 851             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 852     }
 853 }
 854 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
 855 {
 856     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 857     block_t *p_cc;
 858     bool pb_present[4];
 859     int i;
 860     int i_cc_decoder;
 861
 862     assert( p_dec_cc->pf_get_cc != NULL );
 863
 864     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
 865     if( !p_owner->b_cc_supported )
 866         return;
 867
 868     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
 869     if( !p_cc )
 870         return;
 871
 872     vlc_mutex_lock( &p_owner->lock );
 873     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
 874     {
 875         p_owner->pb_cc_present[i] |= pb_present[i];
 876         if( p_owner->pp_cc[i] )
 877             i_cc_decoder++;
 878     }
 879
 880     for( i = 0; i < 4; i++ )
 881     {
 882         if( !p_owner->pp_cc[i] )
 883             continue;
 884
 885         if( i_cc_decoder > 1 )
 886             DecoderDecode( p_owner->pp_cc[i], block_Duplicate( p_cc ) );
 887         else
 888             DecoderDecode( p_owner->pp_cc[i], p_cc );
 889         i_cc_decoder--;
 890     }
 891     vlc_mutex_unlock( &p_owner->lock );
 892 }
 893 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 894 {
 895     vlc_mutex_lock( &p_vout->picture_lock );
 896
 897     if( p_pic->i_status == READY_PICTURE )
 898     {
 899         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 900         p_pic->date = 1;
 901     }
 902     else if( p_pic->i_refcount > 0 )
 903     {
 904         p_pic->i_status = DISPLAYED_PICTURE;
 905     }
 906     else
 907     {
 908         p_pic->i_status = DESTROYED_PICTURE;
 909         picture_CleanupQuant( p_pic );
 910         p_vout->i_heap_size--;
 911     }
 912
 913     vlc_mutex_unlock( &p_vout->picture_lock );
 914 }
 915 static void VoutFlushPicture( vout_thread_t *p_vout )
 916 {
 917     int i;
 918     vlc_mutex_lock( &p_vout->picture_lock );
 919     for( i = 0; i < p_vout->render.i_pictures; i++ )
 920     {
 921         picture_t *p_pic = p_vout->render.pp_picture[i];
 922
 923         if( p_pic->i_status == READY_PICTURE ||
 924             p_pic->i_status == DISPLAYED_PICTURE )
 925         {
 926             /* We cannot change picture status if it is in READY_PICTURE state,
 927              * Just make sure they won't be displayed */
 928             p_pic->date = 1;
 929         }
 930     }
 931     vlc_mutex_unlock( &p_vout->picture_lock );
 932 }
 933
 934 #if 0
 935 static void DecoderOptimizePtsDelay( decoder_t *p_dec )
 936 {
 937     input_thread_t *p_input = p_dec->p_owner->p_input;
 938     vout_thread_t *p_vout = p_dec->p_owner->p_vout;
 939     input_thread_private_t *p_priv = p_input->p;
 940
 941     picture_t *p_old = NULL;
 942     picture_t *p_young = NULL;
 943     int i;
 944
 945     /* Enable with --auto-adjust-pts-delay */
 946     if( !p_priv->pts_adjust.b_auto_adjust )
 947         return;
 948
 949     for( i = 0; i < I_RENDERPICTURES; i++ )
 950     {
 951         picture_t *p_pic = PP_RENDERPICTURE[i];
 952
 953         if( p_pic->i_status != READY_PICTURE )
 954             continue;
 955
 956         if( !p_old || p_pic->date < p_old->date )
 957             p_old = p_pic;
 958         if( !p_young || p_pic->date > p_young->date )
 959             p_young = p_pic;
 960     }
 961
 962     if( !p_young || !p_old )
 963         return;
 964
 965     /* Try to find if we can reduce the pts
 966      * This first draft is way too simple, and we can't say if the
 967      * algo will converge. It's also full of constants.
 968      * But this simple algo allows to reduce the latency
 969      * to the minimum.
 970      * The whole point of this, is to bypass the pts_delay set
 971      * by the access but also the delay arbitraly set by
 972      * the remote server.
 973      * Actually the remote server's muxer may set up a
 974      * pts<->dts delay in the muxed stream. That is
 975      * why we may end up in having a negative pts_delay,
 976      * to compensate that artificial delay. */
 977     const mtime_t i_buffer_length = p_young->date - p_old->date;
 978     int64_t i_pts_slide = 0;
 979     if( i_buffer_length < 10000 )
 980     {
 981         if( p_priv->pts_adjust.i_num_faulty > 10 )
 982         {
 983             i_pts_slide = __MAX(p_input->i_pts_delay *3 / 2, 10000);
 984             p_priv->pts_adjust.i_num_faulty = 0;
 985         }
 986         if( p_priv->pts_adjust.b_to_high )
 987         {
 988             p_priv->pts_adjust.b_to_high = !p_priv->pts_adjust.b_to_high;
 989             p_priv->pts_adjust.i_num_faulty = 0;
 990         }
 991         p_priv->pts_adjust.i_num_faulty++;
 992     }
 993     else if( i_buffer_length > 100000 )
 994     {
 995         if( p_priv->pts_adjust.i_num_faulty > 25 )
 996         {
 997             i_pts_slide = -i_buffer_length/2;
 998             p_priv->pts_adjust.i_num_faulty = 0;
 999         }
1000         if( p_priv->pts_adjust.b_to_high )
1001         {
1002             p_priv->pts_adjust.b_to_high = !p_priv->pts_adjust.b_to_high;
1003             p_priv->pts_adjust.i_num_faulty = 0;
1004         }
1005         p_priv->pts_adjust.i_num_faulty++;
1006     }
1007     if( i_pts_slide != 0 )
1008     {
1009         const mtime_t i_pts_delay_org = p_input->i_pts_delay;
1010
1011         p_input->i_pts_delay += i_pts_slide;
1012
1013         /* Don't play with the pts delay for more than -2<->3sec */
1014         if( p_input->i_pts_delay < -2000000 )
1015             p_input->i_pts_delay = -2000000;
1016         else if( p_input->i_pts_delay > 3000000 )
1017             p_input->i_pts_delay = 3000000;
1018         i_pts_slide = p_input->i_pts_delay - i_pts_delay_org;
1019
1020         msg_Dbg( p_input, "Sliding the pts by %dms pts delay at %dms picture buffer was %dms",
1021             (int)i_pts_slide/1000, (int)p_input->i_pts_delay/1000, (int)i_buffer_length/1000);
1022
1023         vlc_mutex_lock( &p_vout->picture_lock );
1024         /* Slide all the picture */
1025         for( i = 0; i < I_RENDERPICTURES; i++ )
1026             PP_RENDERPICTURE[i]->date += i_pts_slide;
1027         /* FIXME: slide aout/spu */
1028         vlc_mutex_unlock( &p_vout->picture_lock );
1029     }
1030 }
1031 #endif
1032
1033 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1034 {
1035     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1036     input_thread_t *p_input = p_owner->p_input;
1037     picture_t      *p_pic;
1038
1039     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1040     {
1041         vout_thread_t  *p_vout = p_owner->p_vout;
1042         if( p_dec->b_die )
1043         {
1044             /* It prevent freezing VLC in case of broken decoder */
1045             VoutDisplayedPicture( p_vout, p_pic );
1046             if( p_block )
1047                 block_Release( p_block );
1048             break;
1049         }
1050
1051         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1052         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
1053         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1054
1055         if( p_pic->date < p_owner->i_preroll_end )
1056         {
1057             VoutDisplayedPicture( p_vout, p_pic );
1058             continue;
1059         }
1060
1061         if( p_owner->i_preroll_end > 0 )
1062         {
1063             msg_Dbg( p_dec, "End of video preroll" );
1064             if( p_vout )
1065                 VoutFlushPicture( p_vout );
1066             /* */
1067             p_owner->i_preroll_end = -1;
1068         }
1069
1070         if( p_dec->pf_get_cc &&
1071             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1072             DecoderGetCc( p_dec, p_dec );
1073
1074         DecoderWaitUnpause( p_dec );
1075
1076         DecoderVoutBufferFixTs( p_pic, p_owner->p_clock, p_input->i_pts_delay );
1077
1078         vout_DatePicture( p_vout, p_pic, p_pic->date );
1079
1080         /* Re-enable it but do it right this time */
1081         //DecoderOptimizePtsDelay( p_dec );
1082
1083         vout_DisplayPicture( p_vout, p_pic );
1084     }
1085 }
1086
1087 /**
1088  * Decode a block
1089  *
1090  * \param p_dec the decoder object
1091  * \param p_block the block to decode
1092  * \return VLC_SUCCESS or an error code
1093  */
1094 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
1095 {
1096     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1097     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1098
1099     if( p_block && p_block->i_buffer <= 0 )
1100     {
1101         block_Release( p_block );
1102         return VLC_SUCCESS;
1103     }
1104
1105 #ifdef ENABLE_SOUT
1106     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
1107     {
1108         block_t *p_sout_block;
1109
1110         while( ( p_sout_block =
1111                      p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1112         {
1113             if( !p_owner->p_sout_input )
1114             {
1115                 es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1116
1117                 p_owner->sout.i_group = p_dec->fmt_in.i_group;
1118                 p_owner->sout.i_id = p_dec->fmt_in.i_id;
1119                 if( p_dec->fmt_in.psz_language )
1120                 {
1121                     if( p_owner->sout.psz_language )
1122                         free( p_owner->sout.psz_language );
1123                     p_owner->sout.psz_language =
1124                         strdup( p_dec->fmt_in.psz_language );
1125                 }
1126
1127                 p_owner->p_sout_input =
1128                     sout_InputNew( p_owner->p_sout,
1129                                    &p_owner->sout );
1130
1131                 if( p_owner->p_sout_input == NULL )
1132                 {
1133                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1134                              (char *)&p_owner->sout.i_codec );
1135                     p_dec->b_error = true;
1136
1137                     while( p_sout_block )
1138                     {
1139                         block_t *p_next = p_sout_block->p_next;
1140                         block_Release( p_sout_block );
1141                         p_sout_block = p_next;
1142                     }
1143                     break;
1144                 }
1145             }
1146
1147             while( p_sout_block )
1148             {
1149                 block_t *p_next = p_sout_block->p_next;
1150
1151                 p_sout_block->p_next = NULL;
1152
1153                 DecoderWaitUnpause( p_dec );
1154
1155                 DecoderSoutBufferFixTs( p_sout_block,
1156                                         p_owner->p_clock, p_owner->p_input->i_pts_delay, b_telx );
1157
1158                 sout_InputSendBuffer( p_owner->p_sout_input,
1159                                       p_sout_block );
1160
1161                 p_sout_block = p_next;
1162             }
1163
1164             /* For now it's enough, as only sout impact on this flag */
1165             if( p_owner->p_sout->i_out_pace_nocontrol > 0 &&
1166                 p_owner->p_input->p->b_out_pace_control )
1167             {
1168                 msg_Dbg( p_dec, "switching to sync mode" );
1169                 p_owner->p_input->p->b_out_pace_control = false;
1170             }
1171             else if( p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
1172                      !p_owner->p_input->p->b_out_pace_control )
1173             {
1174                 msg_Dbg( p_dec, "switching to async mode" );
1175                 p_owner->p_input->p->b_out_pace_control = true;
1176             }
1177         }
1178     }
1179     else
1180 #endif
1181     if( p_dec->fmt_in.i_cat == AUDIO_ES )
1182     {
1183         if( p_block )
1184             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1185
1186         if( p_owner->p_packetizer )
1187         {
1188             block_t *p_packetized_block;
1189             decoder_t *p_packetizer = p_owner->p_packetizer;
1190
1191             while( (p_packetized_block =
1192                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1193             {
1194                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1195                 {
1196                     es_format_Clean( &p_dec->fmt_in );
1197                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1198                 }
1199
1200                 while( p_packetized_block )
1201                 {
1202                     block_t *p_next = p_packetized_block->p_next;
1203                     p_packetized_block->p_next = NULL;
1204
1205                     DecoderDecodeAudio( p_dec, p_packetized_block );
1206
1207                     p_packetized_block = p_next;
1208                 }
1209             }
1210         }
1211         else if( p_block )
1212         {
1213             DecoderDecodeAudio( p_dec, p_block );
1214         }
1215     }
1216     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1217     {
1218         if( p_block )
1219             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1220
1221         if( p_owner->p_packetizer )
1222         {
1223             block_t *p_packetized_block;
1224             decoder_t *p_packetizer = p_owner->p_packetizer;
1225
1226             while( (p_packetized_block =
1227                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1228             {
1229                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1230                 {
1231                     es_format_Clean( &p_dec->fmt_in );
1232                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1233                 }
1234                 if( p_packetizer->pf_get_cc )
1235                     DecoderGetCc( p_dec, p_packetizer );
1236
1237                 while( p_packetized_block )
1238                 {
1239                     block_t *p_next = p_packetized_block->p_next;
1240                     p_packetized_block->p_next = NULL;
1241
1242                     DecoderDecodeVideo( p_dec, p_packetized_block );
1243
1244                     p_packetized_block = p_next;
1245                 }
1246             }
1247         }
1248         else if( p_block )
1249         {
1250             DecoderDecodeVideo( p_dec, p_block );
1251         }
1252     }
1253     else if( p_dec->fmt_in.i_cat == SPU_ES )
1254     {
1255         input_thread_t *p_input = p_owner->p_input;
1256         vout_thread_t *p_vout;
1257         subpicture_t *p_spu;
1258         bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1259         bool b_flush = false;
1260
1261         if( p_block )
1262         {
1263             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1264             b_flush = (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH) != 0;
1265         }
1266
1267         if( !b_flushing && b_flush && p_owner->p_spu_vout )
1268         {
1269             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1270
1271             if( p_vout && p_owner->p_spu_vout == p_vout )
1272                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1273                              p_owner->i_spu_channel );
1274
1275             if( p_vout )
1276                 vlc_object_release( p_vout );
1277         }
1278
1279         while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1280         {
1281             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1282             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1283             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1284
1285             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1286             if( p_vout && p_owner->p_spu_vout == p_vout )
1287             {
1288                 /* Preroll does not work very well with subtitle */
1289                 if( p_spu->i_start < p_owner->i_preroll_end &&
1290                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_owner->i_preroll_end ) )
1291                 {
1292                     subpicture_Delete( p_spu );
1293                 }
1294                 else
1295                 {
1296                     DecoderWaitUnpause( p_dec );
1297
1298                     DecoderSpuBufferFixTs( p_spu, p_owner->p_clock, p_input->i_pts_delay, b_telx );
1299                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
1300                 }
1301             }
1302             else
1303             {
1304                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
1305             }
1306             if( p_vout )
1307                 vlc_object_release( p_vout );
1308         }
1309     }
1310     else
1311     {
1312         msg_Err( p_dec, "unknown ES format" );
1313         p_dec->b_error = 1;
1314     }
1315
1316     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
1317 }
1318
1319 /**
1320  * Destroys a decoder object
1321  *
1322  * \param p_dec the decoder object
1323  * \return nothing
1324  */
1325 static void DeleteDecoder( decoder_t * p_dec )
1326 {
1327     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1328
1329     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1330              (char*)&p_dec->fmt_in.i_codec,
1331              (unsigned)block_FifoCount( p_owner->p_fifo ) );
1332
1333     /* Free all packets still in the decoder fifo. */
1334     block_FifoEmpty( p_owner->p_fifo );
1335     block_FifoRelease( p_owner->p_fifo );
1336
1337     /* Cleanup */
1338     if( p_owner->p_aout_input )
1339         aout_DecDelete( p_owner->p_aout, p_owner->p_aout_input );
1340     if( p_owner->p_aout )
1341     {
1342         vlc_object_release( p_owner->p_aout );
1343         p_owner->p_aout = NULL;
1344     }
1345     if( p_owner->p_vout )
1346     {
1347         int i_pic;
1348
1349 #define p_pic p_owner->p_vout->render.pp_picture[i_pic]
1350         /* Hack to make sure all the the pictures are freed by the decoder */
1351         for( i_pic = 0; i_pic < p_owner->p_vout->render.i_pictures;
1352              i_pic++ )
1353         {
1354             if( p_pic->i_status == RESERVED_PICTURE )
1355                 vout_DestroyPicture( p_owner->p_vout, p_pic );
1356             if( p_pic->i_refcount > 0 )
1357                 vout_UnlinkPicture( p_owner->p_vout, p_pic );
1358         }
1359 #undef p_pic
1360
1361         /* We are about to die. Reattach video output to p_vlc. */
1362         vout_Request( p_dec, p_owner->p_vout, NULL );
1363         var_SetBool( p_owner->p_input, "intf-change-vout", true );
1364     }
1365
1366 #ifdef ENABLE_SOUT
1367     if( p_owner->p_sout_input )
1368     {
1369         sout_InputDelete( p_owner->p_sout_input );
1370         es_format_Clean( &p_owner->sout );
1371     }
1372 #endif
1373
1374     if( p_dec->fmt_in.i_cat == SPU_ES )
1375     {
1376         vout_thread_t *p_vout;
1377
1378         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1379         if( p_vout && p_owner->p_spu_vout == p_vout )
1380         {
1381             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1382                          p_owner->i_spu_channel );
1383             vlc_object_release( p_vout );
1384         }
1385     }
1386
1387     es_format_Clean( &p_dec->fmt_in );
1388     es_format_Clean( &p_dec->fmt_out );
1389
1390     if( p_owner->p_packetizer )
1391     {
1392         module_unneed( p_owner->p_packetizer,
1393                        p_owner->p_packetizer->p_module );
1394         es_format_Clean( &p_owner->p_packetizer->fmt_in );
1395         es_format_Clean( &p_owner->p_packetizer->fmt_out );
1396         vlc_object_detach( p_owner->p_packetizer );
1397         vlc_object_release( p_owner->p_packetizer );
1398     }
1399
1400     vlc_cond_destroy( &p_owner->wait );
1401     vlc_mutex_destroy( &p_owner->lock );
1402
1403     vlc_object_detach( p_dec );
1404
1405     free( p_owner );
1406 }
1407
1408 /*****************************************************************************
1409  * Buffers allocation callbacks for the decoders
1410  *****************************************************************************/
1411 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
1412 {
1413     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1414     aout_buffer_t *p_buffer;
1415
1416     if( p_owner->p_aout_input != NULL &&
1417         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
1418           p_dec->fmt_out.audio.i_original_channels !=
1419               p_owner->audio.i_original_channels ||
1420           p_dec->fmt_out.audio.i_bytes_per_frame !=
1421               p_owner->audio.i_bytes_per_frame ) )
1422     {
1423         aout_input_t *p_aout_input = p_owner->p_aout_input;
1424
1425         /* Parameters changed, restart the aout */
1426         vlc_mutex_lock( &p_owner->lock );
1427
1428         p_owner->p_aout_input = NULL;
1429         aout_DecDelete( p_owner->p_aout, p_aout_input );
1430
1431         vlc_mutex_unlock( &p_owner->lock );
1432     }
1433
1434     if( p_owner->p_aout_input == NULL )
1435     {
1436         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
1437         audio_sample_format_t format;
1438         aout_input_t *p_aout_input;
1439         aout_instance_t *p_aout;
1440
1441         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1442         p_owner->audio = p_dec->fmt_out.audio;
1443
1444         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
1445         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
1446                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1447         {
1448             if ( i_force_dolby == 1 )
1449             {
1450                 format.i_original_channels = format.i_original_channels |
1451                                              AOUT_CHAN_DOLBYSTEREO;
1452             }
1453             else /* i_force_dolby == 2 */
1454             {
1455                 format.i_original_channels = format.i_original_channels &
1456                                              ~AOUT_CHAN_DOLBYSTEREO;
1457             }
1458         }
1459
1460         p_aout = p_owner->p_aout;
1461         p_aout_input = aout_DecNew( p_dec, &p_aout,
1462                                     &format, &p_dec->fmt_out.audio_replay_gain );
1463
1464         vlc_mutex_lock( &p_owner->lock );
1465         p_owner->p_aout = p_aout;
1466         p_owner->p_aout_input = p_aout_input;
1467         vlc_mutex_unlock( &p_owner->lock );
1468
1469         if( p_owner->p_aout_input == NULL )
1470         {
1471             msg_Err( p_dec, "failed to create audio output" );
1472             p_dec->b_error = true;
1473             return NULL;
1474         }
1475         p_dec->fmt_out.audio.i_bytes_per_frame =
1476             p_owner->audio.i_bytes_per_frame;
1477     }
1478
1479     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
1480
1481     return p_buffer;
1482 }
1483
1484 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1485 {
1486     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1487
1488     aout_DecDeleteBuffer( p_owner->p_aout,
1489                           p_owner->p_aout_input, p_buffer );
1490 }
1491
1492
1493 int vout_CountPictureAvailable( vout_thread_t *p_vout );
1494
1495 static picture_t *vout_new_buffer( decoder_t *p_dec )
1496 {
1497     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1498     picture_t *p_pic;
1499
1500     if( p_owner->p_vout == NULL ||
1501         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
1502         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
1503         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
1504         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
1505     {
1506         vout_thread_t *p_vout;
1507
1508         if( !p_dec->fmt_out.video.i_width ||
1509             !p_dec->fmt_out.video.i_height )
1510         {
1511             /* Can't create a new vout without display size */
1512             return NULL;
1513         }
1514
1515         if( !p_dec->fmt_out.video.i_visible_width ||
1516             !p_dec->fmt_out.video.i_visible_height )
1517         {
1518             if( p_dec->fmt_in.video.i_visible_width &&
1519                 p_dec->fmt_in.video.i_visible_height )
1520             {
1521                 p_dec->fmt_out.video.i_visible_width =
1522                     p_dec->fmt_in.video.i_visible_width;
1523                 p_dec->fmt_out.video.i_visible_height =
1524                     p_dec->fmt_in.video.i_visible_height;
1525             }
1526             else
1527             {
1528                 p_dec->fmt_out.video.i_visible_width =
1529                     p_dec->fmt_out.video.i_width;
1530                 p_dec->fmt_out.video.i_visible_height =
1531                     p_dec->fmt_out.video.i_height;
1532             }
1533         }
1534
1535         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
1536             var_CreateGetBool( p_dec, "hdtv-fix" ) )
1537         {
1538             p_dec->fmt_out.video.i_visible_height = 1080;
1539             p_dec->fmt_out.video.i_sar_num *= 135;
1540             p_dec->fmt_out.video.i_sar_den *= 136;
1541             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
1542         }
1543
1544         if( !p_dec->fmt_out.video.i_sar_num ||
1545             !p_dec->fmt_out.video.i_sar_den )
1546         {
1547             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
1548               p_dec->fmt_out.video.i_visible_height;
1549
1550             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
1551               p_dec->fmt_out.video.i_visible_width;
1552         }
1553
1554         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
1555                      &p_dec->fmt_out.video.i_sar_den,
1556                      p_dec->fmt_out.video.i_sar_num,
1557                      p_dec->fmt_out.video.i_sar_den, 50000 );
1558
1559         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1560         p_owner->video = p_dec->fmt_out.video;
1561
1562         vlc_mutex_lock( &p_owner->lock );
1563         p_vout = p_owner->p_vout;
1564         p_owner->p_vout = NULL;
1565         vlc_mutex_unlock( &p_owner->lock );
1566
1567         p_vout = vout_Request( p_dec, p_vout, &p_dec->fmt_out.video );
1568
1569         vlc_mutex_lock( &p_owner->lock );
1570         p_owner->p_vout = p_vout;
1571         vlc_mutex_unlock( &p_owner->lock );
1572
1573         var_SetBool( p_owner->p_input, "intf-change-vout", true );
1574         if( p_vout == NULL )
1575         {
1576             msg_Err( p_dec, "failed to create video output" );
1577             p_dec->b_error = true;
1578             return NULL;
1579         }
1580
1581         if( p_owner->video.i_rmask )
1582             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
1583         if( p_owner->video.i_gmask )
1584             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
1585         if( p_owner->video.i_bmask )
1586             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
1587     }
1588
1589     /* Get a new picture
1590      */
1591     for( p_pic = NULL; ; )
1592     {
1593         int i_pic, i_ready_pic;
1594
1595         if( p_dec->b_die || p_dec->b_error )
1596             return NULL;
1597
1598         /* The video filter chain required that there is always 1 free buffer
1599          * that it will use as temporary one. It will release the temporary
1600          * buffer once its work is done, so this check is safe even if we don't
1601          * lock around both count() and create().
1602          */
1603         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
1604         {
1605             p_pic = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
1606             if( p_pic )
1607                 break;
1608         }
1609
1610 #define p_pic p_owner->p_vout->render.pp_picture[i_pic]
1611         /* Check the decoder doesn't leak pictures */
1612         for( i_pic = 0, i_ready_pic = 0; i_pic < p_owner->p_vout->render.i_pictures; i_pic++ )
1613         {
1614             if( p_pic->i_status == READY_PICTURE )
1615             {
1616                 i_ready_pic++;
1617                 /* If we have at least 2 ready pictures, wait for the vout thread to
1618                  * process one */
1619                 if( i_ready_pic >= 2 )
1620                     break;
1621
1622                 continue;
1623             }
1624
1625             if( p_pic->i_status == DISPLAYED_PICTURE )
1626             {
1627                 /* If at least one displayed picture is not referenced
1628                  * let vout free it */
1629                 if( p_pic->i_refcount == 0 )
1630                     break;
1631             }
1632         }
1633         if( i_pic == p_owner->p_vout->render.i_pictures )
1634         {
1635             /* Too many pictures are still referenced, there is probably a bug
1636              * with the decoder */
1637             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1638
1639             /* Just free all the pictures */
1640             for( i_pic = 0; i_pic < p_owner->p_vout->render.i_pictures;
1641                  i_pic++ )
1642             {
1643                 if( p_pic->i_status == RESERVED_PICTURE )
1644                     vout_DestroyPicture( p_owner->p_vout, p_pic );
1645                 if( p_pic->i_refcount > 0 )
1646                 vout_UnlinkPicture( p_owner->p_vout, p_pic );
1647             }
1648         }
1649 #undef p_pic
1650
1651         msleep( VOUT_OUTMEM_SLEEP );
1652     }
1653
1654     return p_pic;
1655 }
1656
1657 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1658 {
1659     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1660 }
1661
1662 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1663 {
1664     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1665 }
1666
1667 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1668 {
1669     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1670 }
1671
1672 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1673 {
1674     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1675     vout_thread_t *p_vout = NULL;
1676     subpicture_t *p_subpic;
1677     int i_attempts = 30;
1678
1679     while( i_attempts-- )
1680     {
1681         if( p_dec->b_die || p_dec->b_error )
1682             break;
1683
1684         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1685         if( p_vout )
1686             break;
1687
1688         msleep( VOUT_DISPLAY_DELAY );
1689     }
1690
1691     if( !p_vout )
1692     {
1693         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1694         return NULL;
1695     }
1696
1697     if( p_owner->p_spu_vout != p_vout )
1698     {
1699         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1700                      &p_owner->i_spu_channel );
1701         p_owner->i_spu_order = 0;
1702         p_owner->p_spu_vout = p_vout;
1703     }
1704
1705     p_subpic = subpicture_New();
1706     if( p_subpic )
1707     {
1708         p_subpic->i_channel = p_owner->i_spu_channel;
1709         p_subpic->i_order = p_owner->i_spu_order++;
1710         p_subpic->b_subtitle = true;
1711     }
1712
1713     vlc_object_release( p_vout );
1714
1715     return p_subpic;
1716 }
1717
1718 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1719 {
1720     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1721     vout_thread_t *p_vout = NULL;
1722
1723     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1724     if( !p_vout || p_owner->p_spu_vout != p_vout )
1725     {
1726         if( p_vout )
1727             vlc_object_release( p_vout );
1728         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1729         return;
1730     }
1731
1732     subpicture_Delete( p_subpic );
1733
1734     vlc_object_release( p_vout );
1735 }
1736