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