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 #include <vlc/vlc.h>
  30
  31 #include <vlc_block.h>
  32 #include <vlc_vout.h>
  33 #include <vlc_aout.h>
  34 #include <vlc_sout.h>
  35 #include <vlc_codec.h>
  36 #include <vlc_osd.h>
  37
  38 #include <vlc_interface.h>
  39 #include "audio_output/aout_internal.h"
  40 #include "stream_output/stream_output.h"
  41 #include "input_internal.h"
  42
  43 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
  44 static void        DeleteDecoder( decoder_t * );
  45
  46 static int         DecoderThread( decoder_t * );
  47 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  48
  49 /* Buffers allocation callbacks for the decoders */
  50 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  51 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  52
  53 static picture_t *vout_new_buffer( decoder_t * );
  54 static void vout_del_buffer( decoder_t *, picture_t * );
  55 static void vout_link_picture( decoder_t *, picture_t * );
  56 static void vout_unlink_picture( decoder_t *, picture_t * );
  57
  58 static subpicture_t *spu_new_buffer( decoder_t * );
  59 static void spu_del_buffer( decoder_t *, subpicture_t * );
  60
  61 static es_format_t null_es_format;
  62
  63 struct decoder_owner_sys_t
  64 {
  65     vlc_bool_t      b_own_thread;
  66
  67     int64_t         i_preroll_end;
  68
  69     input_thread_t  *p_input;
  70
  71     aout_instance_t *p_aout;
  72     aout_input_t    *p_aout_input;
  73
  74     vout_thread_t   *p_vout;
  75
  76     vout_thread_t   *p_spu_vout;
  77     int              i_spu_channel;
  78
  79     sout_instance_t         *p_sout;
  80     sout_packetizer_input_t *p_sout_input;
  81
  82     /* Some decoders require already packetized data (ie. not truncated) */
  83     decoder_t *p_packetizer;
  84
  85     /* Current format in use by the output */
  86     video_format_t video;
  87     audio_format_t audio;
  88     es_format_t    sout;
  89
  90     /* fifo */
  91     block_fifo_t *p_fifo;
  92
  93     /* CC */
  94     vlc_bool_t b_cc_supported;
  95     vlc_mutex_t lock_cc;
  96     vlc_bool_t pb_cc_present[4];
  97     decoder_t *pp_cc[4];
  98 };
  99
 100 /* */
 101 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 102 {
 103     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 104              "VLC probably does not support this sound or video format.",
 105              (char*)&codec );
 106     intf_UserFatal( p_dec, VLC_FALSE, _("No suitable decoder module"),
 107                     _("VLC does not support the audio or video format \"%4.4s\". "
 108                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 109 }
 110
 111 /* decoder_GetInputAttachment:
 112  */
 113 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
 114                                                 const char *psz_name )
 115 {
 116     input_attachment_t *p_attachment;
 117     if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
 118         return NULL;
 119     return p_attachment;
 120 }
 121 /* decoder_GetInputAttachments:
 122  */
 123 int decoder_GetInputAttachments( decoder_t *p_dec,
 124                                  input_attachment_t ***ppp_attachment,
 125                                  int *pi_attachment )
 126 {
 127     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 128                           ppp_attachment, pi_attachment );
 129 }
 130 /* decoder_GetDisplayDate:
 131  */
 132 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 133 {
 134     return i_ts;
 135 }
 136
 137 /**
 138  * Spawns a new decoder thread
 139  *
 140  * \param p_input the input thread
 141  * \param p_es the es descriptor
 142  * \return the spawned decoder object
 143  */
 144 decoder_t *input_DecoderNew( input_thread_t *p_input,
 145                              es_format_t *fmt, vlc_bool_t b_force_decoder )
 146 {
 147     decoder_t   *p_dec = NULL;
 148     vlc_value_t val;
 149
 150     /* If we are in sout mode, search for packetizer module */
 151     if( p_input->p->p_sout && !b_force_decoder )
 152     {
 153         /* Create the decoder configuration structure */
 154         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
 155         if( p_dec == NULL )
 156         {
 157             msg_Err( p_input, "could not create packetizer" );
 158             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 159                             _("VLC could not open the packetizer module.") );
 160             return NULL;
 161         }
 162     }
 163     else
 164     {
 165         /* Create the decoder configuration structure */
 166         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
 167         if( p_dec == NULL )
 168         {
 169             msg_Err( p_input, "could not create decoder" );
 170             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 171                             _("VLC could not open the decoder module.") );
 172             return NULL;
 173         }
 174     }
 175
 176     if( !p_dec->p_module )
 177     {
 178         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 179
 180         DeleteDecoder( p_dec );
 181         vlc_object_destroy( p_dec );
 182         return NULL;
 183     }
 184
 185     if( p_input->p->p_sout && p_input->p->input.b_can_pace_control &&
 186         !b_force_decoder )
 187     {
 188         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 189         p_dec->p_owner->b_own_thread = VLC_FALSE;
 190     }
 191     else
 192     {
 193         var_Get( p_input, "minimize-threads", &val );
 194         p_dec->p_owner->b_own_thread = !val.b_bool;
 195     }
 196
 197     if( p_dec->p_owner->b_own_thread )
 198     {
 199         int i_priority;
 200         if( fmt->i_cat == AUDIO_ES )
 201             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 202         else
 203             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 204
 205         /* Spawn the decoder thread */
 206         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 207                                i_priority, VLC_FALSE ) )
 208         {
 209             msg_Err( p_dec, "cannot spawn decoder thread" );
 210             module_Unneed( p_dec, p_dec->p_module );
 211             DeleteDecoder( p_dec );
 212             vlc_object_destroy( p_dec );
 213             return NULL;
 214         }
 215     }
 216
 217     return p_dec;
 218 }
 219
 220 /**
 221  * Kills a decoder thread and waits until it's finished
 222  *
 223  * \param p_input the input thread
 224  * \param p_es the es descriptor
 225  * \return nothing
 226  */
 227 void input_DecoderDelete( decoder_t *p_dec )
 228 {
 229     vlc_object_kill( p_dec );
 230
 231     if( p_dec->p_owner->b_own_thread )
 232     {
 233         /* Make sure the thread leaves the function by
 234          * sending it an empty block. */
 235         block_t *p_block = block_New( p_dec, 0 );
 236         input_DecoderDecode( p_dec, p_block );
 237
 238         vlc_thread_join( p_dec );
 239
 240         /* Don't module_Unneed() here because of the dll loader that wants
 241          * close() in the same thread than open()/decode() */
 242     }
 243     else
 244     {
 245         /* Flush */
 246         input_DecoderDecode( p_dec, NULL );
 247
 248         module_Unneed( p_dec, p_dec->p_module );
 249     }
 250
 251     /* */
 252     if( p_dec->p_owner->b_cc_supported )
 253     {
 254         int i;
 255         for( i = 0; i < 4; i++ )
 256             input_DecoderSetCcState( p_dec, VLC_FALSE, i );
 257     }
 258
 259     /* Delete decoder configuration */
 260     DeleteDecoder( p_dec );
 261
 262     /* Delete the decoder */
 263     vlc_object_destroy( p_dec );
 264 }
 265
 266 /**
 267  * Put a block_t in the decoder's fifo.
 268  *
 269  * \param p_dec the decoder object
 270  * \param p_block the data block
 271  */
 272 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 273 {
 274     if( p_dec->p_owner->b_own_thread )
 275     {
 276         if( p_dec->p_owner->p_input->p->b_out_pace_control )
 277         {
 278             /* FIXME !!!!! */
 279             while( !p_dec->b_die && !p_dec->b_error &&
 280                    block_FifoCount( p_dec->p_owner->p_fifo ) > 10 )
 281             {
 282                 msleep( 1000 );
 283             }
 284         }
 285         else if( block_FifoSize( p_dec->p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 286         {
 287             /* FIXME: ideally we would check the time amount of data
 288              * in the fifo instead of its size. */
 289             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 290                       "consumed quickly enough), resetting fifo!" );
 291             block_FifoEmpty( p_dec->p_owner->p_fifo );
 292         }
 293
 294         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 295     }
 296     else
 297     {
 298         if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
 299         {
 300             if( p_block ) block_Release( p_block );
 301         }
 302         else
 303         {
 304             DecoderDecode( p_dec, p_block );
 305         }
 306     }
 307 }
 308
 309 void input_DecoderDiscontinuity( decoder_t * p_dec, vlc_bool_t b_flush )
 310 {
 311     block_t *p_null;
 312
 313     /* Empty the fifo */
 314     if( p_dec->p_owner->b_own_thread && b_flush )
 315         block_FifoEmpty( p_dec->p_owner->p_fifo );
 316
 317     /* Send a special block */
 318     p_null = block_New( p_dec, 128 );
 319     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 320     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 321     if( p_dec->p_owner->p_packetizer && b_flush )
 322         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 323     memset( p_null->p_buffer, 0, p_null->i_buffer );
 324
 325     input_DecoderDecode( p_dec, p_null );
 326 }
 327
 328 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
 329 {
 330     if( p_dec->p_owner->b_own_thread
 331      && block_FifoCount( p_dec->p_owner->p_fifo ) > 0 )
 332     {
 333         return VLC_FALSE;
 334     }
 335     return VLC_TRUE;
 336 }
 337
 338 void input_DecoderIsCcPresent( decoder_t *p_dec, vlc_bool_t pb_present[4] )
 339 {
 340     int i;
 341
 342     vlc_mutex_lock( &p_dec->p_owner->lock_cc );
 343     for( i = 0; i < 4; i++ )
 344         pb_present[i] =  p_dec->p_owner->pb_cc_present[i];
 345     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 346 }
 347 int input_DecoderSetCcState( decoder_t *p_dec, vlc_bool_t b_decode, int i_channel )
 348 {
 349     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 350
 351     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 352
 353     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 354         return VLC_EGENERIC;
 355
 356     if( b_decode )
 357     {
 358         static const vlc_fourcc_t fcc[4] = {
 359             VLC_FOURCC('c', 'c', '1', ' '),
 360             VLC_FOURCC('c', 'c', '2', ' '),
 361             VLC_FOURCC('c', 'c', '3', ' '),
 362             VLC_FOURCC('c', 'c', '4', ' '),
 363         };
 364         decoder_t *p_cc;
 365         es_format_t fmt;
 366
 367         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 368         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER );
 369         if( !p_cc )
 370         {
 371             msg_Err( p_dec, "could not create decoder" );
 372             intf_UserFatal( p_dec, VLC_FALSE, _("Streaming / Transcoding failed"),
 373                             _("VLC could not open the decoder module.") );
 374             return VLC_EGENERIC;
 375         }
 376         else if( !p_cc->p_module )
 377         {
 378             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 379             DeleteDecoder( p_cc );
 380             vlc_object_destroy( p_cc );
 381             return VLC_EGENERIC;
 382         }
 383
 384         vlc_mutex_lock( &p_owner->lock_cc );
 385         p_dec->p_owner->pp_cc[i_channel] = p_cc;
 386         vlc_mutex_unlock( &p_owner->lock_cc );
 387     }
 388     else
 389     {
 390         decoder_t *p_cc;
 391
 392         vlc_mutex_lock( &p_owner->lock_cc );
 393         p_cc = p_dec->p_owner->pp_cc[i_channel];
 394         p_dec->p_owner->pp_cc[i_channel] = NULL;
 395         vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 396
 397         if( p_cc )
 398         {
 399             vlc_object_kill( p_cc );
 400             module_Unneed( p_cc, p_cc->p_module );
 401             DeleteDecoder( p_cc );
 402             vlc_object_destroy( p_cc );
 403         }
 404     }
 405     return VLC_SUCCESS;
 406 }
 407 int input_DecoderGetCcState( decoder_t *p_dec, vlc_bool_t *pb_decode, int i_channel )
 408 {
 409     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 410
 411     *pb_decode = VLC_FALSE;
 412     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 413         return VLC_EGENERIC;
 414
 415     vlc_mutex_lock( &p_owner->lock_cc );
 416     *pb_decode = p_dec->p_owner->pp_cc[i_channel] != NULL;
 417     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 418     return VLC_EGENERIC;
 419 }
 420
 421 /**
 422  * Create a decoder object
 423  *
 424  * \param p_input the input thread
 425  * \param p_es the es descriptor
 426  * \param i_object_type Object type as define in include/vlc_objects.h
 427  * \return the decoder object
 428  */
 429 static decoder_t * CreateDecoder( input_thread_t *p_input,
 430                                   es_format_t *fmt, int i_object_type )
 431 {
 432     decoder_t *p_dec;
 433     decoder_owner_sys_t *p_owner;
 434     int i;
 435
 436     p_dec = vlc_object_create( p_input, i_object_type );
 437     if( p_dec == NULL )
 438     {
 439         msg_Err( p_input, "out of memory" );
 440         return NULL;
 441     }
 442
 443     p_dec->pf_decode_audio = 0;
 444     p_dec->pf_decode_video = 0;
 445     p_dec->pf_decode_sub = 0;
 446     p_dec->pf_get_cc = 0;
 447     p_dec->pf_packetize = 0;
 448
 449     /* Initialize the decoder fifo */
 450     p_dec->p_module = NULL;
 451
 452     memset( &null_es_format, 0, sizeof(es_format_t) );
 453     es_format_Copy( &p_dec->fmt_in, fmt );
 454     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 455
 456     /* Allocate our private structure for the decoder */
 457     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 458     if( p_dec->p_owner == NULL )
 459     {
 460         msg_Err( p_dec, "out of memory" );
 461         return NULL;
 462     }
 463     p_dec->p_owner->b_own_thread = VLC_TRUE;
 464     p_dec->p_owner->i_preroll_end = -1;
 465     p_dec->p_owner->p_input = p_input;
 466     p_dec->p_owner->p_aout = NULL;
 467     p_dec->p_owner->p_aout_input = NULL;
 468     p_dec->p_owner->p_vout = NULL;
 469     p_dec->p_owner->p_spu_vout = NULL;
 470     p_dec->p_owner->i_spu_channel = 0;
 471     p_dec->p_owner->p_sout = p_input->p->p_sout;
 472     p_dec->p_owner->p_sout_input = NULL;
 473     p_dec->p_owner->p_packetizer = NULL;
 474
 475     /* decoder fifo */
 476     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 477     {
 478         msg_Err( p_dec, "out of memory" );
 479         return NULL;
 480     }
 481
 482     /* Set buffers allocation callbacks for the decoders */
 483     p_dec->pf_aout_buffer_new = aout_new_buffer;
 484     p_dec->pf_aout_buffer_del = aout_del_buffer;
 485     p_dec->pf_vout_buffer_new = vout_new_buffer;
 486     p_dec->pf_vout_buffer_del = vout_del_buffer;
 487     p_dec->pf_picture_link    = vout_link_picture;
 488     p_dec->pf_picture_unlink  = vout_unlink_picture;
 489     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 490     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 491
 492     vlc_object_attach( p_dec, p_input );
 493
 494     /* Find a suitable decoder/packetizer module */
 495     if( i_object_type == VLC_OBJECT_DECODER )
 496         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 497     else
 498         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 499
 500     /* Check if decoder requires already packetized data */
 501     if( i_object_type == VLC_OBJECT_DECODER &&
 502         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 503     {
 504         p_dec->p_owner->p_packetizer =
 505             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 506         if( p_dec->p_owner->p_packetizer )
 507         {
 508             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 509                             &p_dec->fmt_in );
 510
 511             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 512                             &null_es_format );
 513
 514             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 515
 516             p_dec->p_owner->p_packetizer->p_module =
 517                 module_Need( p_dec->p_owner->p_packetizer,
 518                              "packetizer", "$packetizer", 0 );
 519
 520             if( !p_dec->p_owner->p_packetizer->p_module )
 521             {
 522                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 523                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 524                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 525             }
 526         }
 527     }
 528
 529     /* Copy ourself the input replay gain */
 530     if( fmt->i_cat == AUDIO_ES )
 531     {
 532         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 533         {
 534             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 535             {
 536                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 537                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 538             }
 539             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 540             {
 541                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 542                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 543             }
 544         }
 545     }
 546     /* */
 547     p_owner->b_cc_supported = VLC_FALSE;
 548     if( i_object_type == VLC_OBJECT_DECODER )
 549     {
 550         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 551             p_owner->b_cc_supported = VLC_TRUE;
 552         if( p_dec->pf_get_cc )
 553             p_owner->b_cc_supported = VLC_TRUE;
 554     }
 555
 556     vlc_mutex_init( p_dec, &p_owner->lock_cc );
 557     for( i = 0; i < 4; i++ )
 558     {
 559         p_owner->pb_cc_present[i] = VLC_FALSE;
 560         p_owner->pp_cc[i] = NULL;
 561     }
 562     return p_dec;
 563 }
 564
 565 /**
 566  * The decoding main loop
 567  *
 568  * \param p_dec the decoder
 569  * \return 0
 570  */
 571 static int DecoderThread( decoder_t * p_dec )
 572 {
 573     block_t *p_block;
 574
 575     /* The decoder's main loop */
 576     while( !p_dec->b_die && !p_dec->b_error )
 577     {
 578         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 579         {
 580             p_dec->b_error = 1;
 581             break;
 582         }
 583         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 584         {
 585             break;
 586         }
 587     }
 588
 589     while( !p_dec->b_die )
 590     {
 591         /* Trash all received PES packets */
 592         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 593         if( p_block ) block_Release( p_block );
 594     }
 595
 596     /* We do it here because of the dll loader that wants close() in the
 597      * same thread than open()/decode() */
 598     module_Unneed( p_dec, p_dec->p_module );
 599
 600     return 0;
 601 }
 602
 603 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 604 {
 605     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 606         *pi_preroll = INT64_MAX;
 607     else if( p->i_pts > 0 )
 608         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 609     else if( p->i_dts > 0 )
 610         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 611 }
 612 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 613 {
 614     input_thread_t *p_input = p_dec->p_owner->p_input;
 615     const int i_rate = p_block->i_rate;
 616     aout_buffer_t *p_aout_buf;
 617
 618     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 619     {
 620         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 621         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 622         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 623
 624         if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 625         {
 626             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 627                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 628             continue;
 629         }
 630
 631         if( p_dec->p_owner->i_preroll_end > 0 )
 632         {
 633             /* FIXME TODO flush audio output (don't know how to do that) */
 634             msg_Dbg( p_dec, "End of audio preroll" );
 635             p_dec->p_owner->i_preroll_end = -1;
 636         }
 637         aout_DecPlay( p_dec->p_owner->p_aout,
 638                       p_dec->p_owner->p_aout_input,
 639                       p_aout_buf, i_rate );
 640     }
 641 }
 642 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
 643 {
 644     block_t *p_cc;
 645     vlc_bool_t pb_present[4];
 646     int i;
 647     int i_cc_decoder;
 648
 649     assert( p_dec_cc->pf_get_cc != NULL );
 650
 651     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
 652     if( !p_dec->p_owner->b_cc_supported )
 653         return;
 654
 655     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
 656     if( !p_cc )
 657         return;
 658
 659     vlc_mutex_lock( &p_dec->p_owner->lock_cc );
 660     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
 661     {
 662         p_dec->p_owner->pb_cc_present[i] |= pb_present[i];
 663         if( p_dec->p_owner->pp_cc[i] )
 664             i_cc_decoder++;
 665     }
 666
 667     for( i = 0; i < 4; i++ )
 668     {
 669         if( !p_dec->p_owner->pp_cc[i] )
 670             continue;
 671
 672         if( i_cc_decoder > 1 )
 673             DecoderDecode( p_dec->p_owner->pp_cc[i], block_Duplicate( p_cc ) );
 674         else
 675             DecoderDecode( p_dec->p_owner->pp_cc[i], p_cc );
 676         i_cc_decoder--;
 677     }
 678     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 679 }
 680 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 681 {
 682     vlc_mutex_lock( &p_vout->picture_lock );
 683
 684     if( p_pic->i_status == READY_PICTURE )
 685     {
 686         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 687         p_pic->date = 1;
 688     }
 689     else if( p_pic->i_refcount > 0 )
 690     {
 691         p_pic->i_status = DISPLAYED_PICTURE;
 692     }
 693     else
 694     {
 695         p_pic->i_status = DESTROYED_PICTURE;
 696         p_vout->i_heap_size--;
 697     }
 698
 699     vlc_mutex_unlock( &p_vout->picture_lock );
 700 }
 701 static void VoutFlushPicture( vout_thread_t *p_vout )
 702 {
 703     int i;
 704     vlc_mutex_lock( &p_vout->picture_lock );
 705     for( i = 0; i < p_vout->render.i_pictures; i++ )
 706     {
 707         picture_t *p_pic = p_vout->render.pp_picture[i];
 708
 709         if( p_pic->i_status == READY_PICTURE ||
 710             p_pic->i_status == DISPLAYED_PICTURE )
 711         {
 712             /* We cannot change picture status if it is in READY_PICTURE state,
 713              * Just make sure they won't be displayed */
 714             p_pic->date = 1;
 715         }
 716     }
 717     vlc_mutex_unlock( &p_vout->picture_lock );
 718 }
 719 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
 720 {
 721     input_thread_t *p_input = p_dec->p_owner->p_input;
 722     picture_t *p_pic;
 723
 724     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 725     {
 726         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 727         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
 728         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 729
 730         if( p_pic->date < p_dec->p_owner->i_preroll_end )
 731         {
 732             VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
 733             continue;
 734         }
 735
 736         if( p_dec->p_owner->i_preroll_end > 0 )
 737         {
 738             msg_Dbg( p_dec, "End of video preroll" );
 739             if( p_dec->p_owner->p_vout )
 740                 VoutFlushPicture( p_dec->p_owner->p_vout );
 741             /* */
 742             p_dec->p_owner->i_preroll_end = -1;
 743         }
 744
 745         if( ( !p_dec->p_owner->p_packetizer || !p_dec->p_owner->p_packetizer->pf_get_cc ) && p_dec->pf_get_cc )
 746             DecoderGetCc( p_dec, p_dec );
 747
 748         vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 749                           p_pic->date );
 750         vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 751     }
 752 }
 753
 754 /**
 755  * Decode a block
 756  *
 757  * \param p_dec the decoder object
 758  * \param p_block the block to decode
 759  * \return VLC_SUCCESS or an error code
 760  */
 761 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 762 {
 763     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 764     const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
 765
 766     if( p_block && p_block->i_buffer <= 0 )
 767     {
 768         block_Release( p_block );
 769         return VLC_SUCCESS;
 770     }
 771
 772     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 773     {
 774         block_t *p_sout_block;
 775
 776         while( ( p_sout_block =
 777                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 778         {
 779             if( !p_dec->p_owner->p_sout_input )
 780             {
 781                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 782
 783                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 784                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 785                 if( p_dec->fmt_in.psz_language )
 786                 {
 787                     if( p_dec->p_owner->sout.psz_language )
 788                         free( p_dec->p_owner->sout.psz_language );
 789                     p_dec->p_owner->sout.psz_language =
 790                         strdup( p_dec->fmt_in.psz_language );
 791                 }
 792
 793                 p_dec->p_owner->p_sout_input =
 794                     sout_InputNew( p_dec->p_owner->p_sout,
 795                                    &p_dec->p_owner->sout );
 796
 797                 if( p_dec->p_owner->p_sout_input == NULL )
 798                 {
 799                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 800                              (char *)&p_dec->p_owner->sout.i_codec );
 801                     p_dec->b_error = VLC_TRUE;
 802
 803                     while( p_sout_block )
 804                     {
 805                         block_t *p_next = p_sout_block->p_next;
 806                         block_Release( p_sout_block );
 807                         p_sout_block = p_next;
 808                     }
 809                     break;
 810                 }
 811             }
 812
 813             while( p_sout_block )
 814             {
 815                 block_t *p_next = p_sout_block->p_next;
 816
 817                 p_sout_block->p_next = NULL;
 818                 p_sout_block->i_rate = i_rate;
 819
 820                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 821                                       p_sout_block );
 822
 823                 p_sout_block = p_next;
 824             }
 825
 826             /* For now it's enough, as only sout inpact on this flag */
 827             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 828                 p_dec->p_owner->p_input->p->b_out_pace_control )
 829             {
 830                 msg_Dbg( p_dec, "switching to sync mode" );
 831                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 832             }
 833             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 834                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 835             {
 836                 msg_Dbg( p_dec, "switching to async mode" );
 837                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 838             }
 839         }
 840     }
 841     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 842     {
 843         if( p_block )
 844             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 845
 846         if( p_dec->p_owner->p_packetizer )
 847         {
 848             block_t *p_packetized_block;
 849             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 850
 851             while( (p_packetized_block =
 852                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
 853             {
 854                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 855                 {
 856                     es_format_Clean( &p_dec->fmt_in );
 857                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 858                 }
 859
 860                 while( p_packetized_block )
 861                 {
 862                     block_t *p_next = p_packetized_block->p_next;
 863                     p_packetized_block->p_next = NULL;
 864                     p_packetized_block->i_rate = i_rate;
 865
 866                     DecoderDecodeAudio( p_dec, p_packetized_block );
 867
 868                     p_packetized_block = p_next;
 869                 }
 870             }
 871         }
 872         else if( p_block )
 873         {
 874             DecoderDecodeAudio( p_dec, p_block );
 875         }
 876     }
 877     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 878     {
 879         if( p_block )
 880             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 881
 882         if( p_dec->p_owner->p_packetizer )
 883         {
 884             block_t *p_packetized_block;
 885             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 886
 887             while( (p_packetized_block =
 888                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
 889             {
 890                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 891                 {
 892                     es_format_Clean( &p_dec->fmt_in );
 893                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 894                 }
 895                 if( p_packetizer->pf_get_cc )
 896                     DecoderGetCc( p_dec, p_packetizer );
 897
 898                 while( p_packetized_block )
 899                 {
 900                     block_t *p_next = p_packetized_block->p_next;
 901                     p_packetized_block->p_next = NULL;
 902                     p_packetized_block->i_rate = i_rate;
 903
 904                     DecoderDecodeVideo( p_dec, p_packetized_block );
 905
 906                     p_packetized_block = p_next;
 907                 }
 908             }
 909         }
 910         else if( p_block )
 911         {
 912             DecoderDecodeVideo( p_dec, p_block );
 913         }
 914     }
 915     else if( p_dec->fmt_in.i_cat == SPU_ES )
 916     {
 917         input_thread_t *p_input = p_dec->p_owner->p_input;
 918         vout_thread_t *p_vout;
 919         subpicture_t *p_spu;
 920
 921         if( p_block )
 922             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 923
 924         while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
 925         {
 926             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 927             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
 928             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 929
 930             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 931             if( p_vout && p_sys->p_spu_vout == p_vout )
 932             {
 933                 /* Prerool does not work very well with subtitle */
 934                 if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 935                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_dec->p_owner->i_preroll_end ) )
 936                     spu_DestroySubpicture( p_vout->p_spu, p_spu );
 937                 else
 938                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 939             }
 940             else
 941             {
 942                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
 943             }
 944             if( p_vout )
 945                 vlc_object_release( p_vout );
 946         }
 947     }
 948     else
 949     {
 950         msg_Err( p_dec, "unknown ES format" );
 951         p_dec->b_error = 1;
 952     }
 953
 954     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 955 }
 956
 957 /**
 958  * Destroys a decoder object
 959  *
 960  * \param p_dec the decoder object
 961  * \return nothing
 962  */
 963 static void DeleteDecoder( decoder_t * p_dec )
 964 {
 965     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
 966              (char*)&p_dec->fmt_in.i_codec,
 967              (unsigned)block_FifoCount( p_dec->p_owner->p_fifo ) );
 968
 969     /* Free all packets still in the decoder fifo. */
 970     block_FifoEmpty( p_dec->p_owner->p_fifo );
 971     block_FifoRelease( p_dec->p_owner->p_fifo );
 972
 973     /* Cleanup */
 974     if( p_dec->p_owner->p_aout_input )
 975         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 976
 977     if( p_dec->p_owner->p_vout )
 978     {
 979         int i_pic;
 980
 981 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 982         /* Hack to make sure all the the pictures are freed by the decoder */
 983         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 984              i_pic++ )
 985         {
 986             if( p_pic->i_status == RESERVED_PICTURE )
 987                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 988             if( p_pic->i_refcount > 0 )
 989                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 990         }
 991 #undef p_pic
 992
 993         /* We are about to die. Reattach video output to p_vlc. */
 994         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
 995     }
 996
 997     if( p_dec->p_owner->p_sout_input )
 998     {
 999         sout_InputDelete( p_dec->p_owner->p_sout_input );
1000         es_format_Clean( &p_dec->p_owner->sout );
1001     }
1002
1003     if( p_dec->fmt_in.i_cat == SPU_ES )
1004     {
1005         vout_thread_t *p_vout;
1006
1007         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1008         if( p_vout )
1009         {
1010             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1011                          p_dec->p_owner->i_spu_channel );
1012             vlc_object_release( p_vout );
1013         }
1014     }
1015
1016     es_format_Clean( &p_dec->fmt_in );
1017     es_format_Clean( &p_dec->fmt_out );
1018
1019     if( p_dec->p_owner->p_packetizer )
1020     {
1021         module_Unneed( p_dec->p_owner->p_packetizer,
1022                        p_dec->p_owner->p_packetizer->p_module );
1023         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
1024         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
1025         vlc_object_detach( p_dec->p_owner->p_packetizer );
1026         vlc_object_destroy( p_dec->p_owner->p_packetizer );
1027     }
1028
1029     vlc_mutex_destroy( &p_dec->p_owner->lock_cc );
1030
1031     vlc_object_detach( p_dec );
1032
1033     free( p_dec->p_owner );
1034 }
1035
1036 /*****************************************************************************
1037  * Buffers allocation callbacks for the decoders
1038  *****************************************************************************/
1039 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
1040 {
1041     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1042     aout_buffer_t *p_buffer;
1043
1044     if( p_sys->p_aout_input != NULL &&
1045         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
1046           p_dec->fmt_out.audio.i_original_channels !=
1047               p_sys->audio.i_original_channels ||
1048           p_dec->fmt_out.audio.i_bytes_per_frame !=
1049               p_sys->audio.i_bytes_per_frame ) )
1050     {
1051         /* Parameters changed, restart the aout */
1052         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
1053         p_sys->p_aout_input = NULL;
1054     }
1055
1056     if( p_sys->p_aout_input == NULL )
1057     {
1058         audio_sample_format_t format;
1059         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
1060
1061         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1062         p_sys->audio = p_dec->fmt_out.audio;
1063
1064         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
1065         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
1066                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1067         {
1068             if ( i_force_dolby == 1 )
1069             {
1070                 format.i_original_channels = format.i_original_channels |
1071                                              AOUT_CHAN_DOLBYSTEREO;
1072             }
1073             else /* i_force_dolby == 2 */
1074             {
1075                 format.i_original_channels = format.i_original_channels &
1076                                              ~AOUT_CHAN_DOLBYSTEREO;
1077             }
1078         }
1079
1080         p_sys->p_aout_input =
1081             aout_DecNew( p_dec, &p_sys->p_aout, &format, &p_dec->fmt_out.audio_replay_gain );
1082         if( p_sys->p_aout_input == NULL )
1083         {
1084             msg_Err( p_dec, "failed to create audio output" );
1085             p_dec->b_error = VLC_TRUE;
1086             return NULL;
1087         }
1088         p_dec->fmt_out.audio.i_bytes_per_frame =
1089             p_sys->audio.i_bytes_per_frame;
1090     }
1091
1092     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
1093                                   i_samples );
1094
1095     return p_buffer;
1096 }
1097
1098 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1099 {
1100     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
1101                           p_dec->p_owner->p_aout_input, p_buffer );
1102 }
1103
1104 static picture_t *vout_new_buffer( decoder_t *p_dec )
1105 {
1106     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1107     picture_t *p_pic;
1108
1109     if( p_sys->p_vout == NULL ||
1110         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
1111         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
1112         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
1113         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
1114     {
1115         if( !p_dec->fmt_out.video.i_width ||
1116             !p_dec->fmt_out.video.i_height )
1117         {
1118             /* Can't create a new vout without display size */
1119             return NULL;
1120         }
1121
1122         if( !p_dec->fmt_out.video.i_visible_width ||
1123             !p_dec->fmt_out.video.i_visible_height )
1124         {
1125             if( p_dec->fmt_in.video.i_visible_width &&
1126                 p_dec->fmt_in.video.i_visible_height )
1127             {
1128                 p_dec->fmt_out.video.i_visible_width =
1129                     p_dec->fmt_in.video.i_visible_width;
1130                 p_dec->fmt_out.video.i_visible_height =
1131                     p_dec->fmt_in.video.i_visible_height;
1132             }
1133             else
1134             {
1135                 p_dec->fmt_out.video.i_visible_width =
1136                     p_dec->fmt_out.video.i_width;
1137                 p_dec->fmt_out.video.i_visible_height =
1138                     p_dec->fmt_out.video.i_height;
1139             }
1140         }
1141
1142         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
1143             var_CreateGetBool( p_dec, "hdtv-fix" ) )
1144         {
1145             p_dec->fmt_out.video.i_visible_height = 1080;
1146             p_dec->fmt_out.video.i_sar_num *= 135;
1147             p_dec->fmt_out.video.i_sar_den *= 136;
1148             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
1149         }
1150
1151         if( !p_dec->fmt_out.video.i_sar_num ||
1152             !p_dec->fmt_out.video.i_sar_den )
1153         {
1154             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
1155               p_dec->fmt_out.video.i_visible_height;
1156
1157             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
1158               p_dec->fmt_out.video.i_visible_width;
1159         }
1160
1161         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
1162                      &p_dec->fmt_out.video.i_sar_den,
1163                      p_dec->fmt_out.video.i_sar_num,
1164                      p_dec->fmt_out.video.i_sar_den, 50000 );
1165
1166         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1167         p_sys->video = p_dec->fmt_out.video;
1168
1169         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
1170                                       &p_dec->fmt_out.video );
1171         if( p_sys->p_vout == NULL )
1172         {
1173             msg_Err( p_dec, "failed to create video output" );
1174             p_dec->b_error = VLC_TRUE;
1175             return NULL;
1176         }
1177
1178         if( p_sys->video.i_rmask )
1179             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
1180         if( p_sys->video.i_gmask )
1181             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
1182         if( p_sys->video.i_bmask )
1183             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
1184     }
1185
1186     /* Get a new picture */
1187     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
1188     {
1189         int i_pic, i_ready_pic = 0;
1190
1191         if( p_dec->b_die || p_dec->b_error )
1192         {
1193             return NULL;
1194         }
1195
1196 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1197         /* Check the decoder doesn't leak pictures */
1198         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1199              i_pic++ )
1200         {
1201             if( p_pic->i_status == READY_PICTURE )
1202             {
1203                 if( i_ready_pic++ > 0 ) break;
1204                 else continue;
1205             }
1206
1207             if( p_pic->i_status != DISPLAYED_PICTURE &&
1208                 p_pic->i_status != RESERVED_PICTURE &&
1209                 p_pic->i_status != READY_PICTURE ) break;
1210
1211             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1212                 break;
1213         }
1214         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1215         {
1216             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1217
1218             /* Just free all the pictures */
1219             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1220                  i_pic++ )
1221             {
1222                 if( p_pic->i_status == RESERVED_PICTURE )
1223                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1224                 if( p_pic->i_refcount > 0 )
1225                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1226             }
1227         }
1228 #undef p_pic
1229
1230         msleep( VOUT_OUTMEM_SLEEP );
1231     }
1232
1233     return p_pic;
1234 }
1235
1236 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1237 {
1238     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1239 }
1240
1241 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1242 {
1243     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1244 }
1245
1246 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1247 {
1248     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1249 }
1250
1251 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1252 {
1253     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1254     vout_thread_t *p_vout = NULL;
1255     subpicture_t *p_subpic;
1256     int i_attempts = 30;
1257
1258     while( i_attempts-- )
1259     {
1260         if( p_dec->b_die || p_dec->b_error ) break;
1261
1262         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1263         if( p_vout ) break;
1264
1265         msleep( VOUT_DISPLAY_DELAY );
1266     }
1267
1268     if( !p_vout )
1269     {
1270         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1271         return NULL;
1272     }
1273
1274     if( p_sys->p_spu_vout != p_vout )
1275     {
1276         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1277                      &p_sys->i_spu_channel );
1278         p_sys->p_spu_vout = p_vout;
1279     }
1280
1281     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1282     if( p_subpic )
1283     {
1284         p_subpic->i_channel = p_sys->i_spu_channel;
1285     }
1286
1287     vlc_object_release( p_vout );
1288
1289     return p_subpic;
1290 }
1291
1292 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1293 {
1294     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1295     vout_thread_t *p_vout = NULL;
1296
1297     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1298     if( !p_vout || p_sys->p_spu_vout != p_vout )
1299     {
1300         if( p_vout )
1301             vlc_object_release( p_vout );
1302         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1303         return;
1304     }
1305
1306     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1307
1308     vlc_object_release( p_vout );
1309 }
1310