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         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
 737 static void optimize_video_pts( decoder_t *p_dec )
 738 {
 739     picture_t * oldest_pict = NULL;
 740     picture_t * youngest_pict = NULL;
 741     int i;
 742
 743     input_thread_t * p_input = p_dec->p_owner->p_input;
 744     vout_thread_t * p_vout = p_dec->p_owner->p_vout;
 745     input_thread_private_t * p_priv = p_input->p;
 746
 747     /* Enable with --auto-adjust-pts-delay */
 748     if( !p_priv->pts_adjust.auto_adjust ) return;
 749
 750     for( i = 0; i < I_RENDERPICTURES; i++ )
 751     {
 752         picture_t * pic = PP_RENDERPICTURE[i];
 753         if( pic->i_status != READY_PICTURE )
 754             continue;
 755
 756         if( !oldest_pict || pic->date < oldest_pict->date )
 757             oldest_pict = pic;
 758         if( !youngest_pict || pic->date > youngest_pict->date )
 759             youngest_pict = pic;
 760     }
 761
 762     if( !youngest_pict || !oldest_pict )
 763         return;
 764
 765     /* Try to find if we can reduce the pts
 766      * This first draft is way to simple, and we can't say if the
 767      * algo will converge. It's also full of constants.
 768      * But this simple algo allows to reduce the latency
 769      * to the minimum.
 770      * The whole point of this, is to bypass the pts_delay set
 771      * by the access but also the delay arbitraly set by
 772      * the remote server.
 773      * Actually the remote server's muxer may set up a
 774      * pts<->dts delay in the muxed stream. That is
 775      * why we may end up in having a negative pts_delay,
 776      * to compensate that artificial delay. */
 777     mtime_t buffer_size = youngest_pict->date - oldest_pict->date;
 778     int64_t pts_slide = 0;
 779     if( buffer_size < 10000 )
 780     {
 781         if( p_priv->pts_adjust.i_num_faulty > 10 )
 782         {
 783             pts_slide = __MAX(p_input->i_pts_delay *3 / 2, 10000);
 784             p_priv->pts_adjust.i_num_faulty = 0;
 785         }
 786         if( p_priv->pts_adjust.to_high )
 787         {
 788             p_priv->pts_adjust.to_high = !p_priv->pts_adjust.to_high;
 789             p_priv->pts_adjust.i_num_faulty = 0;
 790         }
 791         p_priv->pts_adjust.i_num_faulty++;
 792     }
 793     else if( buffer_size > 100000 )
 794     {
 795         if( p_priv->pts_adjust.i_num_faulty > 25 )
 796         {
 797             pts_slide = -buffer_size/2;
 798             p_priv->pts_adjust.i_num_faulty = 0;
 799         }
 800         if( p_priv->pts_adjust.to_high )
 801         {
 802             p_priv->pts_adjust.to_high = !p_priv->pts_adjust.to_high;
 803             p_priv->pts_adjust.i_num_faulty = 0;
 804         }
 805         p_priv->pts_adjust.i_num_faulty++;
 806     }
 807     if( pts_slide )
 808     {
 809         mtime_t origi_delay = p_input->i_pts_delay;
 810
 811         p_input->i_pts_delay += pts_slide;
 812
 813         /* Don't play with the pts delay for more than -2<->3sec */
 814         if( p_input->i_pts_delay < -2000000 )
 815             p_input->i_pts_delay = -2000000;
 816         else if( p_input->i_pts_delay > 3000000 )
 817             p_input->i_pts_delay = 3000000;
 818         pts_slide = p_input->i_pts_delay - origi_delay;
 819
 820         msg_Dbg( p_input, "Sliding the pts by %dms pts delay at %dms picture buffer was %dms",
 821             (int)pts_slide/1000, (int)p_input->i_pts_delay/1000, (int)buffer_size/1000);
 822
 823         vlc_mutex_lock( &p_vout->picture_lock );
 824         /* Slide all the picture */
 825         for( i = 0; i < I_RENDERPICTURES; i++ )
 826             PP_RENDERPICTURE[i]->date += pts_slide;
 827         /* FIXME: slide aout/spu */
 828         vlc_mutex_unlock( &p_vout->picture_lock );
 829
 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         optimize_video_pts( 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 : 0 ) ) )
 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, 0 );
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 static picture_t *vout_new_buffer( decoder_t *p_dec )
1239 {
1240     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1241     picture_t *p_pic;
1242
1243     if( p_sys->p_vout == NULL ||
1244         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
1245         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
1246         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
1247         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
1248     {
1249         if( !p_dec->fmt_out.video.i_width ||
1250             !p_dec->fmt_out.video.i_height )
1251         {
1252             /* Can't create a new vout without display size */
1253             return NULL;
1254         }
1255
1256         if( !p_dec->fmt_out.video.i_visible_width ||
1257             !p_dec->fmt_out.video.i_visible_height )
1258         {
1259             if( p_dec->fmt_in.video.i_visible_width &&
1260                 p_dec->fmt_in.video.i_visible_height )
1261             {
1262                 p_dec->fmt_out.video.i_visible_width =
1263                     p_dec->fmt_in.video.i_visible_width;
1264                 p_dec->fmt_out.video.i_visible_height =
1265                     p_dec->fmt_in.video.i_visible_height;
1266             }
1267             else
1268             {
1269                 p_dec->fmt_out.video.i_visible_width =
1270                     p_dec->fmt_out.video.i_width;
1271                 p_dec->fmt_out.video.i_visible_height =
1272                     p_dec->fmt_out.video.i_height;
1273             }
1274         }
1275
1276         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
1277             var_CreateGetBool( p_dec, "hdtv-fix" ) )
1278         {
1279             p_dec->fmt_out.video.i_visible_height = 1080;
1280             p_dec->fmt_out.video.i_sar_num *= 135;
1281             p_dec->fmt_out.video.i_sar_den *= 136;
1282             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
1283         }
1284
1285         if( !p_dec->fmt_out.video.i_sar_num ||
1286             !p_dec->fmt_out.video.i_sar_den )
1287         {
1288             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
1289               p_dec->fmt_out.video.i_visible_height;
1290
1291             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
1292               p_dec->fmt_out.video.i_visible_width;
1293         }
1294
1295         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
1296                      &p_dec->fmt_out.video.i_sar_den,
1297                      p_dec->fmt_out.video.i_sar_num,
1298                      p_dec->fmt_out.video.i_sar_den, 50000 );
1299
1300         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1301         p_sys->video = p_dec->fmt_out.video;
1302
1303         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
1304                                       &p_dec->fmt_out.video );
1305         if( p_sys->p_vout == NULL )
1306         {
1307             msg_Err( p_dec, "failed to create video output" );
1308             p_dec->b_error = true;
1309             return NULL;
1310         }
1311
1312         if( p_sys->video.i_rmask )
1313             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
1314         if( p_sys->video.i_gmask )
1315             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
1316         if( p_sys->video.i_bmask )
1317             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
1318     }
1319
1320     /* Get a new picture */
1321     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
1322     {
1323         int i_pic, i_ready_pic = 0;
1324
1325         if( p_dec->b_die || p_dec->b_error )
1326         {
1327             return NULL;
1328         }
1329
1330 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1331         /* Check the decoder doesn't leak pictures */
1332         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1333              i_pic++ )
1334         {
1335             if( p_pic->i_status == READY_PICTURE )
1336             {
1337                 if( i_ready_pic++ > 0 ) break;
1338                 else continue;
1339             }
1340
1341             if( p_pic->i_status != DISPLAYED_PICTURE &&
1342                 p_pic->i_status != RESERVED_PICTURE &&
1343                 p_pic->i_status != READY_PICTURE ) break;
1344
1345             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1346                 break;
1347         }
1348         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1349         {
1350             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1351
1352             /* Just free all the pictures */
1353             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1354                  i_pic++ )
1355             {
1356                 if( p_pic->i_status == RESERVED_PICTURE )
1357                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1358                 if( p_pic->i_refcount > 0 )
1359                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1360             }
1361         }
1362 #undef p_pic
1363
1364         msleep( VOUT_OUTMEM_SLEEP );
1365     }
1366
1367     return p_pic;
1368 }
1369
1370 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1371 {
1372     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1373 }
1374
1375 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1376 {
1377     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1378 }
1379
1380 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1381 {
1382     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1383 }
1384
1385 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1386 {
1387     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1388     vout_thread_t *p_vout = NULL;
1389     subpicture_t *p_subpic;
1390     int i_attempts = 30;
1391
1392     while( i_attempts-- )
1393     {
1394         if( p_dec->b_die || p_dec->b_error ) break;
1395
1396         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1397         if( p_vout ) break;
1398
1399         msleep( VOUT_DISPLAY_DELAY );
1400     }
1401
1402     if( !p_vout )
1403     {
1404         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1405         return NULL;
1406     }
1407
1408     if( p_sys->p_spu_vout != p_vout )
1409     {
1410         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1411                      &p_sys->i_spu_channel );
1412         p_sys->p_spu_vout = p_vout;
1413     }
1414
1415     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1416     if( p_subpic )
1417     {
1418         p_subpic->i_channel = p_sys->i_spu_channel;
1419     }
1420
1421     vlc_object_release( p_vout );
1422
1423     return p_subpic;
1424 }
1425
1426 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1427 {
1428     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1429     vout_thread_t *p_vout = NULL;
1430
1431     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1432     if( !p_vout || p_sys->p_spu_vout != p_vout )
1433     {
1434         if( p_vout )
1435             vlc_object_release( p_vout );
1436         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1437         return;
1438     }
1439
1440     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1441
1442     vlc_object_release( p_vout );
1443 }
1444