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
  33 #include <vlc/vlc.h>
  34
  35 #include <vlc_block.h>
  36 #include <vlc_vout.h>
  37 #include <vlc_aout.h>
  38 #include <vlc_sout.h>
  39 #include <vlc_codec.h>
  40 #include <vlc_osd.h>
  41
  42 #include <vlc_interface.h>
  43 #include "audio_output/aout_internal.h"
  44 #include "stream_output/stream_output.h"
  45 #include "input_internal.h"
  46
  47 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
  48 static void        DeleteDecoder( decoder_t * );
  49
  50 static int         DecoderThread( decoder_t * );
  51 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  52
  53 /* Buffers allocation callbacks for the decoders */
  54 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  55 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  56
  57 static picture_t *vout_new_buffer( decoder_t * );
  58 static void vout_del_buffer( decoder_t *, picture_t * );
  59 static void vout_link_picture( decoder_t *, picture_t * );
  60 static void vout_unlink_picture( decoder_t *, picture_t * );
  61
  62 static subpicture_t *spu_new_buffer( decoder_t * );
  63 static void spu_del_buffer( decoder_t *, subpicture_t * );
  64
  65 static es_format_t null_es_format;
  66
  67 struct decoder_owner_sys_t
  68 {
  69     vlc_bool_t      b_own_thread;
  70
  71     int64_t         i_preroll_end;
  72
  73     input_thread_t  *p_input;
  74
  75     aout_instance_t *p_aout;
  76     aout_input_t    *p_aout_input;
  77
  78     vout_thread_t   *p_vout;
  79
  80     vout_thread_t   *p_spu_vout;
  81     int              i_spu_channel;
  82
  83     sout_instance_t         *p_sout;
  84     sout_packetizer_input_t *p_sout_input;
  85
  86     /* Some decoders require already packetized data (ie. not truncated) */
  87     decoder_t *p_packetizer;
  88
  89     /* Current format in use by the output */
  90     video_format_t video;
  91     audio_format_t audio;
  92     es_format_t    sout;
  93
  94     /* fifo */
  95     block_fifo_t *p_fifo;
  96
  97     /* CC */
  98     vlc_bool_t b_cc_supported;
  99     vlc_mutex_t lock_cc;
 100     vlc_bool_t pb_cc_present[4];
 101     decoder_t *pp_cc[4];
 102 };
 103
 104 /* */
 105 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 106 {
 107     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 108              "VLC probably does not support this sound or video format.",
 109              (char*)&codec );
 110     intf_UserFatal( p_dec, VLC_FALSE, _("No suitable decoder module"),
 111                     _("VLC does not support the audio or video format \"%4.4s\". "
 112                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 113 }
 114
 115 /* decoder_GetInputAttachment:
 116  */
 117 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
 118                                                 const char *psz_name )
 119 {
 120     input_attachment_t *p_attachment;
 121     if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
 122         return NULL;
 123     return p_attachment;
 124 }
 125 /* decoder_GetInputAttachments:
 126  */
 127 int decoder_GetInputAttachments( decoder_t *p_dec,
 128                                  input_attachment_t ***ppp_attachment,
 129                                  int *pi_attachment )
 130 {
 131     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 132                           ppp_attachment, pi_attachment );
 133 }
 134 /* decoder_GetDisplayDate:
 135  */
 136 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 137 {
 138     return i_ts;
 139 }
 140
 141 /**
 142  * Spawns a new decoder thread
 143  *
 144  * \param p_input the input thread
 145  * \param p_es the es descriptor
 146  * \return the spawned decoder object
 147  */
 148 decoder_t *input_DecoderNew( input_thread_t *p_input,
 149                              es_format_t *fmt, vlc_bool_t b_force_decoder )
 150 {
 151     decoder_t   *p_dec = NULL;
 152     vlc_value_t val;
 153
 154     /* If we are in sout mode, search for packetizer module */
 155     if( p_input->p->p_sout && !b_force_decoder )
 156     {
 157         /* Create the decoder configuration structure */
 158         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
 159         if( p_dec == NULL )
 160         {
 161             msg_Err( p_input, "could not create packetizer" );
 162             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 163                             _("VLC could not open the packetizer module.") );
 164             return NULL;
 165         }
 166     }
 167     else
 168     {
 169         /* Create the decoder configuration structure */
 170         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
 171         if( p_dec == NULL )
 172         {
 173             msg_Err( p_input, "could not create decoder" );
 174             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 175                             _("VLC could not open the decoder module.") );
 176             return NULL;
 177         }
 178     }
 179
 180     if( !p_dec->p_module )
 181     {
 182         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 183
 184         DeleteDecoder( p_dec );
 185         vlc_object_destroy( p_dec );
 186         return NULL;
 187     }
 188
 189     if( p_input->p->p_sout && p_input->p->input.b_can_pace_control &&
 190         !b_force_decoder )
 191     {
 192         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 193         p_dec->p_owner->b_own_thread = VLC_FALSE;
 194     }
 195     else
 196     {
 197         var_Get( p_input, "minimize-threads", &val );
 198         p_dec->p_owner->b_own_thread = !val.b_bool;
 199     }
 200
 201     if( p_dec->p_owner->b_own_thread )
 202     {
 203         int i_priority;
 204         if( fmt->i_cat == AUDIO_ES )
 205             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 206         else
 207             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 208
 209         /* Spawn the decoder thread */
 210         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 211                                i_priority, VLC_FALSE ) )
 212         {
 213             msg_Err( p_dec, "cannot spawn decoder thread" );
 214             module_Unneed( p_dec, p_dec->p_module );
 215             DeleteDecoder( p_dec );
 216             vlc_object_destroy( p_dec );
 217             return NULL;
 218         }
 219     }
 220
 221     return p_dec;
 222 }
 223
 224 /**
 225  * Kills a decoder thread and waits until it's finished
 226  *
 227  * \param p_input the input thread
 228  * \param p_es the es descriptor
 229  * \return nothing
 230  */
 231 void input_DecoderDelete( decoder_t *p_dec )
 232 {
 233     vlc_object_kill( p_dec );
 234
 235     if( p_dec->p_owner->b_own_thread )
 236     {
 237         /* Make sure the thread leaves the function by
 238          * sending it an empty block. */
 239         block_t *p_block = block_New( p_dec, 0 );
 240         input_DecoderDecode( p_dec, p_block );
 241
 242         vlc_thread_join( p_dec );
 243
 244         /* Don't module_Unneed() here because of the dll loader that wants
 245          * close() in the same thread than open()/decode() */
 246     }
 247     else
 248     {
 249         /* Flush */
 250         input_DecoderDecode( p_dec, NULL );
 251
 252         module_Unneed( p_dec, p_dec->p_module );
 253     }
 254
 255     /* */
 256     if( p_dec->p_owner->b_cc_supported )
 257     {
 258         int i;
 259         for( i = 0; i < 4; i++ )
 260             input_DecoderSetCcState( p_dec, VLC_FALSE, i );
 261     }
 262
 263     /* Delete decoder configuration */
 264     DeleteDecoder( p_dec );
 265
 266     /* Delete the decoder */
 267     vlc_object_destroy( p_dec );
 268 }
 269
 270 /**
 271  * Put a block_t in the decoder's fifo.
 272  *
 273  * \param p_dec the decoder object
 274  * \param p_block the data block
 275  */
 276 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 277 {
 278     if( p_dec->p_owner->b_own_thread )
 279     {
 280         if( p_dec->p_owner->p_input->p->b_out_pace_control )
 281         {
 282             /* FIXME !!!!! */
 283             while( !p_dec->b_die && !p_dec->b_error &&
 284                    block_FifoCount( p_dec->p_owner->p_fifo ) > 10 )
 285             {
 286                 msleep( 1000 );
 287             }
 288         }
 289         else if( block_FifoSize( p_dec->p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 290         {
 291             /* FIXME: ideally we would check the time amount of data
 292              * in the fifo instead of its size. */
 293             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 294                       "consumed quickly enough), resetting fifo!" );
 295             block_FifoEmpty( p_dec->p_owner->p_fifo );
 296         }
 297
 298         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 299     }
 300     else
 301     {
 302         if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
 303         {
 304             if( p_block ) block_Release( p_block );
 305         }
 306         else
 307         {
 308             DecoderDecode( p_dec, p_block );
 309         }
 310     }
 311 }
 312
 313 void input_DecoderDiscontinuity( decoder_t * p_dec, vlc_bool_t b_flush )
 314 {
 315     block_t *p_null;
 316
 317     /* Empty the fifo */
 318     if( p_dec->p_owner->b_own_thread && b_flush )
 319         block_FifoEmpty( p_dec->p_owner->p_fifo );
 320
 321     /* Send a special block */
 322     p_null = block_New( p_dec, 128 );
 323     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 324     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 325     if( p_dec->p_owner->p_packetizer && b_flush )
 326         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 327     memset( p_null->p_buffer, 0, p_null->i_buffer );
 328
 329     input_DecoderDecode( p_dec, p_null );
 330 }
 331
 332 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
 333 {
 334     if( p_dec->p_owner->b_own_thread
 335      && block_FifoCount( p_dec->p_owner->p_fifo ) > 0 )
 336     {
 337         return VLC_FALSE;
 338     }
 339     return VLC_TRUE;
 340 }
 341
 342 void input_DecoderIsCcPresent( decoder_t *p_dec, vlc_bool_t pb_present[4] )
 343 {
 344     int i;
 345
 346     vlc_mutex_lock( &p_dec->p_owner->lock_cc );
 347     for( i = 0; i < 4; i++ )
 348         pb_present[i] =  p_dec->p_owner->pb_cc_present[i];
 349     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 350 }
 351 int input_DecoderSetCcState( decoder_t *p_dec, vlc_bool_t b_decode, int i_channel )
 352 {
 353     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 354
 355     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 356
 357     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 358         return VLC_EGENERIC;
 359
 360     if( b_decode )
 361     {
 362         static const vlc_fourcc_t fcc[4] = {
 363             VLC_FOURCC('c', 'c', '1', ' '),
 364             VLC_FOURCC('c', 'c', '2', ' '),
 365             VLC_FOURCC('c', 'c', '3', ' '),
 366             VLC_FOURCC('c', 'c', '4', ' '),
 367         };
 368         decoder_t *p_cc;
 369         es_format_t fmt;
 370
 371         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 372         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER );
 373         if( !p_cc )
 374         {
 375             msg_Err( p_dec, "could not create decoder" );
 376             intf_UserFatal( p_dec, VLC_FALSE, _("Streaming / Transcoding failed"),
 377                             _("VLC could not open the decoder module.") );
 378             return VLC_EGENERIC;
 379         }
 380         else if( !p_cc->p_module )
 381         {
 382             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 383             DeleteDecoder( p_cc );
 384             vlc_object_destroy( p_cc );
 385             return VLC_EGENERIC;
 386         }
 387
 388         vlc_mutex_lock( &p_owner->lock_cc );
 389         p_dec->p_owner->pp_cc[i_channel] = p_cc;
 390         vlc_mutex_unlock( &p_owner->lock_cc );
 391     }
 392     else
 393     {
 394         decoder_t *p_cc;
 395
 396         vlc_mutex_lock( &p_owner->lock_cc );
 397         p_cc = p_dec->p_owner->pp_cc[i_channel];
 398         p_dec->p_owner->pp_cc[i_channel] = NULL;
 399         vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 400
 401         if( p_cc )
 402         {
 403             vlc_object_kill( p_cc );
 404             module_Unneed( p_cc, p_cc->p_module );
 405             DeleteDecoder( p_cc );
 406             vlc_object_destroy( p_cc );
 407         }
 408     }
 409     return VLC_SUCCESS;
 410 }
 411 int input_DecoderGetCcState( decoder_t *p_dec, vlc_bool_t *pb_decode, int i_channel )
 412 {
 413     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 414
 415     *pb_decode = VLC_FALSE;
 416     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 417         return VLC_EGENERIC;
 418
 419     vlc_mutex_lock( &p_owner->lock_cc );
 420     *pb_decode = p_dec->p_owner->pp_cc[i_channel] != NULL;
 421     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 422     return VLC_EGENERIC;
 423 }
 424
 425 /**
 426  * Create a decoder object
 427  *
 428  * \param p_input the input thread
 429  * \param p_es the es descriptor
 430  * \param i_object_type Object type as define in include/vlc_objects.h
 431  * \return the decoder object
 432  */
 433 static decoder_t * CreateDecoder( input_thread_t *p_input,
 434                                   es_format_t *fmt, int i_object_type )
 435 {
 436     decoder_t *p_dec;
 437     decoder_owner_sys_t *p_owner;
 438     int i;
 439
 440     p_dec = vlc_object_create( p_input, i_object_type );
 441     if( p_dec == NULL )
 442     {
 443         msg_Err( p_input, "out of memory" );
 444         return NULL;
 445     }
 446
 447     p_dec->pf_decode_audio = 0;
 448     p_dec->pf_decode_video = 0;
 449     p_dec->pf_decode_sub = 0;
 450     p_dec->pf_get_cc = 0;
 451     p_dec->pf_packetize = 0;
 452
 453     /* Initialize the decoder fifo */
 454     p_dec->p_module = NULL;
 455
 456     memset( &null_es_format, 0, sizeof(es_format_t) );
 457     es_format_Copy( &p_dec->fmt_in, fmt );
 458     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 459
 460     /* Allocate our private structure for the decoder */
 461     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 462     if( p_dec->p_owner == NULL )
 463     {
 464         msg_Err( p_dec, "out of memory" );
 465         return NULL;
 466     }
 467     p_dec->p_owner->b_own_thread = VLC_TRUE;
 468     p_dec->p_owner->i_preroll_end = -1;
 469     p_dec->p_owner->p_input = p_input;
 470     p_dec->p_owner->p_aout = NULL;
 471     p_dec->p_owner->p_aout_input = NULL;
 472     p_dec->p_owner->p_vout = NULL;
 473     p_dec->p_owner->p_spu_vout = NULL;
 474     p_dec->p_owner->i_spu_channel = 0;
 475     p_dec->p_owner->p_sout = p_input->p->p_sout;
 476     p_dec->p_owner->p_sout_input = NULL;
 477     p_dec->p_owner->p_packetizer = NULL;
 478
 479     /* decoder fifo */
 480     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 481     {
 482         msg_Err( p_dec, "out of memory" );
 483         return NULL;
 484     }
 485
 486     /* Set buffers allocation callbacks for the decoders */
 487     p_dec->pf_aout_buffer_new = aout_new_buffer;
 488     p_dec->pf_aout_buffer_del = aout_del_buffer;
 489     p_dec->pf_vout_buffer_new = vout_new_buffer;
 490     p_dec->pf_vout_buffer_del = vout_del_buffer;
 491     p_dec->pf_picture_link    = vout_link_picture;
 492     p_dec->pf_picture_unlink  = vout_unlink_picture;
 493     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 494     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 495
 496     vlc_object_attach( p_dec, p_input );
 497
 498     /* Find a suitable decoder/packetizer module */
 499     if( i_object_type == VLC_OBJECT_DECODER )
 500         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 501     else
 502         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 503
 504     /* Check if decoder requires already packetized data */
 505     if( i_object_type == VLC_OBJECT_DECODER &&
 506         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 507     {
 508         p_dec->p_owner->p_packetizer =
 509             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 510         if( p_dec->p_owner->p_packetizer )
 511         {
 512             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 513                             &p_dec->fmt_in );
 514
 515             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 516                             &null_es_format );
 517
 518             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 519
 520             p_dec->p_owner->p_packetizer->p_module =
 521                 module_Need( p_dec->p_owner->p_packetizer,
 522                              "packetizer", "$packetizer", 0 );
 523
 524             if( !p_dec->p_owner->p_packetizer->p_module )
 525             {
 526                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 527                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 528                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 529             }
 530         }
 531     }
 532
 533     /* Copy ourself the input replay gain */
 534     if( fmt->i_cat == AUDIO_ES )
 535     {
 536         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 537         {
 538             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 539             {
 540                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 541                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 542             }
 543             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 544             {
 545                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 546                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 547             }
 548         }
 549     }
 550     /* */
 551     p_owner->b_cc_supported = VLC_FALSE;
 552     if( i_object_type == VLC_OBJECT_DECODER )
 553     {
 554         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 555             p_owner->b_cc_supported = VLC_TRUE;
 556         if( p_dec->pf_get_cc )
 557             p_owner->b_cc_supported = VLC_TRUE;
 558     }
 559
 560     vlc_mutex_init( p_dec, &p_owner->lock_cc );
 561     for( i = 0; i < 4; i++ )
 562     {
 563         p_owner->pb_cc_present[i] = VLC_FALSE;
 564         p_owner->pp_cc[i] = NULL;
 565     }
 566     return p_dec;
 567 }
 568
 569 /**
 570  * The decoding main loop
 571  *
 572  * \param p_dec the decoder
 573  * \return 0
 574  */
 575 static int DecoderThread( decoder_t * p_dec )
 576 {
 577     block_t *p_block;
 578
 579     /* The decoder's main loop */
 580     while( !p_dec->b_die && !p_dec->b_error )
 581     {
 582         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 583         {
 584             p_dec->b_error = 1;
 585             break;
 586         }
 587         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 588         {
 589             break;
 590         }
 591     }
 592
 593     while( !p_dec->b_die )
 594     {
 595         /* Trash all received PES packets */
 596         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 597         if( p_block ) block_Release( p_block );
 598     }
 599
 600     /* We do it here because of the dll loader that wants close() in the
 601      * same thread than open()/decode() */
 602     module_Unneed( p_dec, p_dec->p_module );
 603
 604     return 0;
 605 }
 606
 607 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 608 {
 609     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 610         *pi_preroll = INT64_MAX;
 611     else if( p->i_pts > 0 )
 612         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 613     else if( p->i_dts > 0 )
 614         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 615 }
 616 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 617 {
 618     input_thread_t *p_input = p_dec->p_owner->p_input;
 619     const int i_rate = p_block->i_rate;
 620     aout_buffer_t *p_aout_buf;
 621
 622     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 623     {
 624         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 625         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 626         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 627
 628         if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 629         {
 630             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 631                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 632             continue;
 633         }
 634
 635         if( p_dec->p_owner->i_preroll_end > 0 )
 636         {
 637             /* FIXME TODO flush audio output (don't know how to do that) */
 638             msg_Dbg( p_dec, "End of audio preroll" );
 639             p_dec->p_owner->i_preroll_end = -1;
 640         }
 641         aout_DecPlay( p_dec->p_owner->p_aout,
 642                       p_dec->p_owner->p_aout_input,
 643                       p_aout_buf, i_rate );
 644     }
 645 }
 646 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
 647 {
 648     block_t *p_cc;
 649     vlc_bool_t pb_present[4];
 650     int i;
 651     int i_cc_decoder;
 652
 653     assert( p_dec_cc->pf_get_cc != NULL );
 654
 655     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
 656     if( !p_dec->p_owner->b_cc_supported )
 657         return;
 658
 659     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
 660     if( !p_cc )
 661         return;
 662
 663     vlc_mutex_lock( &p_dec->p_owner->lock_cc );
 664     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
 665     {
 666         p_dec->p_owner->pb_cc_present[i] |= pb_present[i];
 667         if( p_dec->p_owner->pp_cc[i] )
 668             i_cc_decoder++;
 669     }
 670
 671     for( i = 0; i < 4; i++ )
 672     {
 673         if( !p_dec->p_owner->pp_cc[i] )
 674             continue;
 675
 676         if( i_cc_decoder > 1 )
 677             DecoderDecode( p_dec->p_owner->pp_cc[i], block_Duplicate( p_cc ) );
 678         else
 679             DecoderDecode( p_dec->p_owner->pp_cc[i], p_cc );
 680         i_cc_decoder--;
 681     }
 682     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 683 }
 684 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 685 {
 686     vlc_mutex_lock( &p_vout->picture_lock );
 687
 688     if( p_pic->i_status == READY_PICTURE )
 689     {
 690         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 691         p_pic->date = 1;
 692     }
 693     else if( p_pic->i_refcount > 0 )
 694     {
 695         p_pic->i_status = DISPLAYED_PICTURE;
 696     }
 697     else
 698     {
 699         p_pic->i_status = DESTROYED_PICTURE;
 700         p_vout->i_heap_size--;
 701     }
 702
 703     vlc_mutex_unlock( &p_vout->picture_lock );
 704 }
 705 static void VoutFlushPicture( vout_thread_t *p_vout )
 706 {
 707     int i;
 708     vlc_mutex_lock( &p_vout->picture_lock );
 709     for( i = 0; i < p_vout->render.i_pictures; i++ )
 710     {
 711         picture_t *p_pic = p_vout->render.pp_picture[i];
 712
 713         if( p_pic->i_status == READY_PICTURE ||
 714             p_pic->i_status == DISPLAYED_PICTURE )
 715         {
 716             /* We cannot change picture status if it is in READY_PICTURE state,
 717              * Just make sure they won't be displayed */
 718             p_pic->date = 1;
 719         }
 720     }
 721     vlc_mutex_unlock( &p_vout->picture_lock );
 722 }
 723 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
 724 {
 725     input_thread_t *p_input = p_dec->p_owner->p_input;
 726     picture_t *p_pic;
 727
 728     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 729     {
 730         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 731         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
 732         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 733
 734         if( p_pic->date < p_dec->p_owner->i_preroll_end )
 735         {
 736             VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
 737             continue;
 738         }
 739
 740         if( p_dec->p_owner->i_preroll_end > 0 )
 741         {
 742             msg_Dbg( p_dec, "End of video preroll" );
 743             if( p_dec->p_owner->p_vout )
 744                 VoutFlushPicture( p_dec->p_owner->p_vout );
 745             /* */
 746             p_dec->p_owner->i_preroll_end = -1;
 747         }
 748
 749         if( ( !p_dec->p_owner->p_packetizer || !p_dec->p_owner->p_packetizer->pf_get_cc ) && p_dec->pf_get_cc )
 750             DecoderGetCc( p_dec, p_dec );
 751
 752         vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 753                           p_pic->date );
 754         vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 755     }
 756 }
 757
 758 /**
 759  * Decode a block
 760  *
 761  * \param p_dec the decoder object
 762  * \param p_block the block to decode
 763  * \return VLC_SUCCESS or an error code
 764  */
 765 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 766 {
 767     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 768     const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
 769
 770     if( p_block && p_block->i_buffer <= 0 )
 771     {
 772         block_Release( p_block );
 773         return VLC_SUCCESS;
 774     }
 775
 776     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 777     {
 778         block_t *p_sout_block;
 779
 780         while( ( p_sout_block =
 781                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 782         {
 783             if( !p_dec->p_owner->p_sout_input )
 784             {
 785                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 786
 787                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 788                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 789                 if( p_dec->fmt_in.psz_language )
 790                 {
 791                     if( p_dec->p_owner->sout.psz_language )
 792                         free( p_dec->p_owner->sout.psz_language );
 793                     p_dec->p_owner->sout.psz_language =
 794                         strdup( p_dec->fmt_in.psz_language );
 795                 }
 796
 797                 p_dec->p_owner->p_sout_input =
 798                     sout_InputNew( p_dec->p_owner->p_sout,
 799                                    &p_dec->p_owner->sout );
 800
 801                 if( p_dec->p_owner->p_sout_input == NULL )
 802                 {
 803                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 804                              (char *)&p_dec->p_owner->sout.i_codec );
 805                     p_dec->b_error = VLC_TRUE;
 806
 807                     while( p_sout_block )
 808                     {
 809                         block_t *p_next = p_sout_block->p_next;
 810                         block_Release( p_sout_block );
 811                         p_sout_block = p_next;
 812                     }
 813                     break;
 814                 }
 815             }
 816
 817             while( p_sout_block )
 818             {
 819                 block_t *p_next = p_sout_block->p_next;
 820
 821                 p_sout_block->p_next = NULL;
 822                 p_sout_block->i_rate = i_rate;
 823
 824                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 825                                       p_sout_block );
 826
 827                 p_sout_block = p_next;
 828             }
 829
 830             /* For now it's enough, as only sout inpact on this flag */
 831             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 832                 p_dec->p_owner->p_input->p->b_out_pace_control )
 833             {
 834                 msg_Dbg( p_dec, "switching to sync mode" );
 835                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 836             }
 837             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 838                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 839             {
 840                 msg_Dbg( p_dec, "switching to async mode" );
 841                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 842             }
 843         }
 844     }
 845     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 846     {
 847         if( p_block )
 848             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 849
 850         if( p_dec->p_owner->p_packetizer )
 851         {
 852             block_t *p_packetized_block;
 853             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 854
 855             while( (p_packetized_block =
 856                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
 857             {
 858                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 859                 {
 860                     es_format_Clean( &p_dec->fmt_in );
 861                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 862                 }
 863
 864                 while( p_packetized_block )
 865                 {
 866                     block_t *p_next = p_packetized_block->p_next;
 867                     p_packetized_block->p_next = NULL;
 868                     p_packetized_block->i_rate = i_rate;
 869
 870                     DecoderDecodeAudio( p_dec, p_packetized_block );
 871
 872                     p_packetized_block = p_next;
 873                 }
 874             }
 875         }
 876         else if( p_block )
 877         {
 878             DecoderDecodeAudio( p_dec, p_block );
 879         }
 880     }
 881     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 882     {
 883         if( p_block )
 884             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 885
 886         if( p_dec->p_owner->p_packetizer )
 887         {
 888             block_t *p_packetized_block;
 889             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 890
 891             while( (p_packetized_block =
 892                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
 893             {
 894                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 895                 {
 896                     es_format_Clean( &p_dec->fmt_in );
 897                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 898                 }
 899                 if( p_packetizer->pf_get_cc )
 900                     DecoderGetCc( p_dec, p_packetizer );
 901
 902                 while( p_packetized_block )
 903                 {
 904                     block_t *p_next = p_packetized_block->p_next;
 905                     p_packetized_block->p_next = NULL;
 906                     p_packetized_block->i_rate = i_rate;
 907
 908                     DecoderDecodeVideo( p_dec, p_packetized_block );
 909
 910                     p_packetized_block = p_next;
 911                 }
 912             }
 913         }
 914         else if( p_block )
 915         {
 916             DecoderDecodeVideo( p_dec, p_block );
 917         }
 918     }
 919     else if( p_dec->fmt_in.i_cat == SPU_ES )
 920     {
 921         input_thread_t *p_input = p_dec->p_owner->p_input;
 922         vout_thread_t *p_vout;
 923         subpicture_t *p_spu;
 924
 925         if( p_block )
 926             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 927
 928         while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
 929         {
 930             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 931             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
 932             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 933
 934             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 935             if( p_vout && p_sys->p_spu_vout == p_vout )
 936             {
 937                 /* Prerool does not work very well with subtitle */
 938                 if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 939                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_dec->p_owner->i_preroll_end ) )
 940                     spu_DestroySubpicture( p_vout->p_spu, p_spu );
 941                 else
 942                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 943             }
 944             else
 945             {
 946                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
 947             }
 948             if( p_vout )
 949                 vlc_object_release( p_vout );
 950         }
 951     }
 952     else
 953     {
 954         msg_Err( p_dec, "unknown ES format" );
 955         p_dec->b_error = 1;
 956     }
 957
 958     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 959 }
 960
 961 /**
 962  * Destroys a decoder object
 963  *
 964  * \param p_dec the decoder object
 965  * \return nothing
 966  */
 967 static void DeleteDecoder( decoder_t * p_dec )
 968 {
 969     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
 970              (char*)&p_dec->fmt_in.i_codec,
 971              (unsigned)block_FifoCount( p_dec->p_owner->p_fifo ) );
 972
 973     /* Free all packets still in the decoder fifo. */
 974     block_FifoEmpty( p_dec->p_owner->p_fifo );
 975     block_FifoRelease( p_dec->p_owner->p_fifo );
 976
 977     /* Cleanup */
 978     if( p_dec->p_owner->p_aout_input )
 979         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 980
 981     if( p_dec->p_owner->p_vout )
 982     {
 983         int i_pic;
 984
 985 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 986         /* Hack to make sure all the the pictures are freed by the decoder */
 987         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 988              i_pic++ )
 989         {
 990             if( p_pic->i_status == RESERVED_PICTURE )
 991                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 992             if( p_pic->i_refcount > 0 )
 993                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 994         }
 995 #undef p_pic
 996
 997         /* We are about to die. Reattach video output to p_vlc. */
 998         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
 999     }
1000
1001     if( p_dec->p_owner->p_sout_input )
1002     {
1003         sout_InputDelete( p_dec->p_owner->p_sout_input );
1004         es_format_Clean( &p_dec->p_owner->sout );
1005     }
1006
1007     if( p_dec->fmt_in.i_cat == SPU_ES )
1008     {
1009         vout_thread_t *p_vout;
1010
1011         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1012         if( p_vout )
1013         {
1014             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1015                          p_dec->p_owner->i_spu_channel );
1016             vlc_object_release( p_vout );
1017         }
1018     }
1019
1020     es_format_Clean( &p_dec->fmt_in );
1021     es_format_Clean( &p_dec->fmt_out );
1022
1023     if( p_dec->p_owner->p_packetizer )
1024     {
1025         module_Unneed( p_dec->p_owner->p_packetizer,
1026                        p_dec->p_owner->p_packetizer->p_module );
1027         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
1028         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
1029         vlc_object_detach( p_dec->p_owner->p_packetizer );
1030         vlc_object_destroy( p_dec->p_owner->p_packetizer );
1031     }
1032
1033     vlc_mutex_destroy( &p_dec->p_owner->lock_cc );
1034
1035     vlc_object_detach( p_dec );
1036
1037     free( p_dec->p_owner );
1038 }
1039
1040 /*****************************************************************************
1041  * Buffers allocation callbacks for the decoders
1042  *****************************************************************************/
1043 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
1044 {
1045     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1046     aout_buffer_t *p_buffer;
1047
1048     if( p_sys->p_aout_input != NULL &&
1049         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
1050           p_dec->fmt_out.audio.i_original_channels !=
1051               p_sys->audio.i_original_channels ||
1052           p_dec->fmt_out.audio.i_bytes_per_frame !=
1053               p_sys->audio.i_bytes_per_frame ) )
1054     {
1055         /* Parameters changed, restart the aout */
1056         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
1057         p_sys->p_aout_input = NULL;
1058     }
1059
1060     if( p_sys->p_aout_input == NULL )
1061     {
1062         audio_sample_format_t format;
1063         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
1064
1065         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1066         p_sys->audio = p_dec->fmt_out.audio;
1067
1068         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
1069         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
1070                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1071         {
1072             if ( i_force_dolby == 1 )
1073             {
1074                 format.i_original_channels = format.i_original_channels |
1075                                              AOUT_CHAN_DOLBYSTEREO;
1076             }
1077             else /* i_force_dolby == 2 */
1078             {
1079                 format.i_original_channels = format.i_original_channels &
1080                                              ~AOUT_CHAN_DOLBYSTEREO;
1081             }
1082         }
1083
1084         p_sys->p_aout_input =
1085             aout_DecNew( p_dec, &p_sys->p_aout, &format, &p_dec->fmt_out.audio_replay_gain );
1086         if( p_sys->p_aout_input == NULL )
1087         {
1088             msg_Err( p_dec, "failed to create audio output" );
1089             p_dec->b_error = VLC_TRUE;
1090             return NULL;
1091         }
1092         p_dec->fmt_out.audio.i_bytes_per_frame =
1093             p_sys->audio.i_bytes_per_frame;
1094     }
1095
1096     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
1097                                   i_samples );
1098
1099     return p_buffer;
1100 }
1101
1102 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1103 {
1104     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
1105                           p_dec->p_owner->p_aout_input, p_buffer );
1106 }
1107
1108 static picture_t *vout_new_buffer( decoder_t *p_dec )
1109 {
1110     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1111     picture_t *p_pic;
1112
1113     if( p_sys->p_vout == NULL ||
1114         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
1115         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
1116         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
1117         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
1118     {
1119         if( !p_dec->fmt_out.video.i_width ||
1120             !p_dec->fmt_out.video.i_height )
1121         {
1122             /* Can't create a new vout without display size */
1123             return NULL;
1124         }
1125
1126         if( !p_dec->fmt_out.video.i_visible_width ||
1127             !p_dec->fmt_out.video.i_visible_height )
1128         {
1129             if( p_dec->fmt_in.video.i_visible_width &&
1130                 p_dec->fmt_in.video.i_visible_height )
1131             {
1132                 p_dec->fmt_out.video.i_visible_width =
1133                     p_dec->fmt_in.video.i_visible_width;
1134                 p_dec->fmt_out.video.i_visible_height =
1135                     p_dec->fmt_in.video.i_visible_height;
1136             }
1137             else
1138             {
1139                 p_dec->fmt_out.video.i_visible_width =
1140                     p_dec->fmt_out.video.i_width;
1141                 p_dec->fmt_out.video.i_visible_height =
1142                     p_dec->fmt_out.video.i_height;
1143             }
1144         }
1145
1146         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
1147             var_CreateGetBool( p_dec, "hdtv-fix" ) )
1148         {
1149             p_dec->fmt_out.video.i_visible_height = 1080;
1150             p_dec->fmt_out.video.i_sar_num *= 135;
1151             p_dec->fmt_out.video.i_sar_den *= 136;
1152             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
1153         }
1154
1155         if( !p_dec->fmt_out.video.i_sar_num ||
1156             !p_dec->fmt_out.video.i_sar_den )
1157         {
1158             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
1159               p_dec->fmt_out.video.i_visible_height;
1160
1161             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
1162               p_dec->fmt_out.video.i_visible_width;
1163         }
1164
1165         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
1166                      &p_dec->fmt_out.video.i_sar_den,
1167                      p_dec->fmt_out.video.i_sar_num,
1168                      p_dec->fmt_out.video.i_sar_den, 50000 );
1169
1170         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1171         p_sys->video = p_dec->fmt_out.video;
1172
1173         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
1174                                       &p_dec->fmt_out.video );
1175         if( p_sys->p_vout == NULL )
1176         {
1177             msg_Err( p_dec, "failed to create video output" );
1178             p_dec->b_error = VLC_TRUE;
1179             return NULL;
1180         }
1181
1182         if( p_sys->video.i_rmask )
1183             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
1184         if( p_sys->video.i_gmask )
1185             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
1186         if( p_sys->video.i_bmask )
1187             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
1188     }
1189
1190     /* Get a new picture */
1191     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
1192     {
1193         int i_pic, i_ready_pic = 0;
1194
1195         if( p_dec->b_die || p_dec->b_error )
1196         {
1197             return NULL;
1198         }
1199
1200 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1201         /* Check the decoder doesn't leak pictures */
1202         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1203              i_pic++ )
1204         {
1205             if( p_pic->i_status == READY_PICTURE )
1206             {
1207                 if( i_ready_pic++ > 0 ) break;
1208                 else continue;
1209             }
1210
1211             if( p_pic->i_status != DISPLAYED_PICTURE &&
1212                 p_pic->i_status != RESERVED_PICTURE &&
1213                 p_pic->i_status != READY_PICTURE ) break;
1214
1215             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1216                 break;
1217         }
1218         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1219         {
1220             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1221
1222             /* Just free all the pictures */
1223             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1224                  i_pic++ )
1225             {
1226                 if( p_pic->i_status == RESERVED_PICTURE )
1227                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1228                 if( p_pic->i_refcount > 0 )
1229                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1230             }
1231         }
1232 #undef p_pic
1233
1234         msleep( VOUT_OUTMEM_SLEEP );
1235     }
1236
1237     return p_pic;
1238 }
1239
1240 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1241 {
1242     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1243 }
1244
1245 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1246 {
1247     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1248 }
1249
1250 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1251 {
1252     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1253 }
1254
1255 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1256 {
1257     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1258     vout_thread_t *p_vout = NULL;
1259     subpicture_t *p_subpic;
1260     int i_attempts = 30;
1261
1262     while( i_attempts-- )
1263     {
1264         if( p_dec->b_die || p_dec->b_error ) break;
1265
1266         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1267         if( p_vout ) break;
1268
1269         msleep( VOUT_DISPLAY_DELAY );
1270     }
1271
1272     if( !p_vout )
1273     {
1274         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1275         return NULL;
1276     }
1277
1278     if( p_sys->p_spu_vout != p_vout )
1279     {
1280         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1281                      &p_sys->i_spu_channel );
1282         p_sys->p_spu_vout = p_vout;
1283     }
1284
1285     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1286     if( p_subpic )
1287     {
1288         p_subpic->i_channel = p_sys->i_spu_channel;
1289     }
1290
1291     vlc_object_release( p_vout );
1292
1293     return p_subpic;
1294 }
1295
1296 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1297 {
1298     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1299     vout_thread_t *p_vout = NULL;
1300
1301     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1302     if( !p_vout || p_sys->p_spu_vout != p_vout )
1303     {
1304         if( p_vout )
1305             vlc_object_release( p_vout );
1306         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1307         return;
1308     }
1309
1310     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1311
1312     vlc_object_release( p_vout );
1313 }
1314