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