git.sesse.net Git - vlc/blob - src/input/decoder.c

   1 /*****************************************************************************
   2  * decoder.c: Functions for the management of decoders
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *          Laurent Aimar <fenrir@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32 #include <assert.h>
  33
  34 #include <vlc/vlc.h>
  35
  36 #include <vlc_block.h>
  37 #include <vlc_vout.h>
  38 #include <vlc_aout.h>
  39 #include <vlc_sout.h>
  40 #include <vlc_codec.h>
  41 #include <vlc_osd.h>
  42
  43 #include <vlc_interface.h>
  44 #include "audio_output/aout_internal.h"
  45 #include "stream_output/stream_output.h"
  46 #include "input_internal.h"
  47
  48 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
  49 static void        DeleteDecoder( decoder_t * );
  50
  51 static int         DecoderThread( decoder_t * );
  52 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  53
  54 /* Buffers allocation callbacks for the decoders */
  55 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  56 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  57
  58 static picture_t *vout_new_buffer( decoder_t * );
  59 static void vout_del_buffer( decoder_t *, picture_t * );
  60 static void vout_link_picture( decoder_t *, picture_t * );
  61 static void vout_unlink_picture( decoder_t *, picture_t * );
  62
  63 static subpicture_t *spu_new_buffer( decoder_t * );
  64 static void spu_del_buffer( decoder_t *, subpicture_t * );
  65
  66 static es_format_t null_es_format;
  67
  68 struct decoder_owner_sys_t
  69 {
  70     vlc_bool_t      b_own_thread;
  71
  72     int64_t         i_preroll_end;
  73
  74     input_thread_t  *p_input;
  75
  76     aout_instance_t *p_aout;
  77     aout_input_t    *p_aout_input;
  78
  79     vout_thread_t   *p_vout;
  80
  81     vout_thread_t   *p_spu_vout;
  82     int              i_spu_channel;
  83
  84     sout_instance_t         *p_sout;
  85     sout_packetizer_input_t *p_sout_input;
  86
  87     /* Some decoders require already packetized data (ie. not truncated) */
  88     decoder_t *p_packetizer;
  89
  90     /* Current format in use by the output */
  91     video_format_t video;
  92     audio_format_t audio;
  93     es_format_t    sout;
  94
  95     /* fifo */
  96     block_fifo_t *p_fifo;
  97
  98     /* CC */
  99     vlc_bool_t b_cc_supported;
 100     vlc_mutex_t lock_cc;
 101     vlc_bool_t pb_cc_present[4];
 102     decoder_t *pp_cc[4];
 103 };
 104
 105 /* */
 106 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 107 {
 108     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 109              "VLC probably does not support this sound or video format.",
 110              (char*)&codec );
 111     intf_UserFatal( p_dec, VLC_FALSE, _("No suitable decoder module"),
 112                     _("VLC does not support the audio or video format \"%4.4s\". "
 113                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 114 }
 115
 116 /* decoder_GetInputAttachment:
 117  */
 118 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
 119                                                 const char *psz_name )
 120 {
 121     input_attachment_t *p_attachment;
 122     if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
 123         return NULL;
 124     return p_attachment;
 125 }
 126 /* decoder_GetInputAttachments:
 127  */
 128 int decoder_GetInputAttachments( decoder_t *p_dec,
 129                                  input_attachment_t ***ppp_attachment,
 130                                  int *pi_attachment )
 131 {
 132     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 133                           ppp_attachment, pi_attachment );
 134 }
 135 /* decoder_GetDisplayDate:
 136  */
 137 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 138 {
 139     return i_ts;
 140 }
 141
 142 /**
 143  * Spawns a new decoder thread
 144  *
 145  * \param p_input the input thread
 146  * \param p_es the es descriptor
 147  * \return the spawned decoder object
 148  */
 149 decoder_t *input_DecoderNew( input_thread_t *p_input,
 150                              es_format_t *fmt, vlc_bool_t b_force_decoder )
 151 {
 152     decoder_t   *p_dec = NULL;
 153     vlc_value_t val;
 154
 155     /* If we are in sout mode, search for packetizer module */
 156     if( p_input->p->p_sout && !b_force_decoder )
 157     {
 158         /* Create the decoder configuration structure */
 159         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
 160         if( p_dec == NULL )
 161         {
 162             msg_Err( p_input, "could not create packetizer" );
 163             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 164                             _("VLC could not open the packetizer module.") );
 165             return NULL;
 166         }
 167     }
 168     else
 169     {
 170         /* Create the decoder configuration structure */
 171         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
 172         if( p_dec == NULL )
 173         {
 174             msg_Err( p_input, "could not create decoder" );
 175             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 176                             _("VLC could not open the decoder module.") );
 177             return NULL;
 178         }
 179     }
 180
 181     if( !p_dec->p_module )
 182     {
 183         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 184
 185         DeleteDecoder( p_dec );
 186         vlc_object_release( p_dec );
 187         return NULL;
 188     }
 189
 190     if( p_input->p->p_sout && p_input->p->input.b_can_pace_control &&
 191         !b_force_decoder )
 192     {
 193         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 194         p_dec->p_owner->b_own_thread = VLC_FALSE;
 195     }
 196     else
 197     {
 198         var_Get( p_input, "minimize-threads", &val );
 199         p_dec->p_owner->b_own_thread = !val.b_bool;
 200     }
 201
 202     if( p_dec->p_owner->b_own_thread )
 203     {
 204         int i_priority;
 205         if( fmt->i_cat == AUDIO_ES )
 206             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 207         else
 208             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 209
 210         /* Spawn the decoder thread */
 211         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 212                                i_priority, VLC_FALSE ) )
 213         {
 214             msg_Err( p_dec, "cannot spawn decoder thread" );
 215             module_Unneed( p_dec, p_dec->p_module );
 216             DeleteDecoder( p_dec );
 217             vlc_object_release( p_dec );
 218             return NULL;
 219         }
 220     }
 221
 222     return p_dec;
 223 }
 224
 225 /**
 226  * Kills a decoder thread and waits until it's finished
 227  *
 228  * \param p_input the input thread
 229  * \param p_es the es descriptor
 230  * \return nothing
 231  */
 232 void input_DecoderDelete( decoder_t *p_dec )
 233 {
 234     vlc_object_kill( p_dec );
 235
 236     if( p_dec->p_owner->b_own_thread )
 237     {
 238         /* Make sure the thread leaves the function by
 239          * sending it an empty block. */
 240         block_t *p_block = block_New( p_dec, 0 );
 241         input_DecoderDecode( p_dec, p_block );
 242
 243         vlc_thread_join( p_dec );
 244
 245         /* Don't module_Unneed() here because of the dll loader that wants
 246          * close() in the same thread than open()/decode() */
 247     }
 248     else
 249     {
 250         /* Flush */
 251         input_DecoderDecode( p_dec, NULL );
 252
 253         module_Unneed( p_dec, p_dec->p_module );
 254     }
 255
 256     /* */
 257     if( p_dec->p_owner->b_cc_supported )
 258     {
 259         int i;
 260         for( i = 0; i < 4; i++ )
 261             input_DecoderSetCcState( p_dec, VLC_FALSE, i );
 262     }
 263
 264     /* Delete decoder configuration */
 265     DeleteDecoder( p_dec );
 266
 267     /* Delete the decoder */
 268     vlc_object_release( p_dec );
 269 }
 270
 271 /**
 272  * Put a block_t in the decoder's fifo.
 273  *
 274  * \param p_dec the decoder object
 275  * \param p_block the data block
 276  */
 277 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 278 {
 279     if( p_dec->p_owner->b_own_thread )
 280     {
 281         if( p_dec->p_owner->p_input->p->b_out_pace_control )
 282         {
 283             /* FIXME !!!!! */
 284             while( !p_dec->b_die && !p_dec->b_error &&
 285                    block_FifoCount( p_dec->p_owner->p_fifo ) > 10 )
 286             {
 287                 msleep( 1000 );
 288             }
 289         }
 290         else if( block_FifoSize( p_dec->p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 291         {
 292             /* FIXME: ideally we would check the time amount of data
 293              * in the fifo instead of its size. */
 294             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 295                       "consumed quickly enough), resetting fifo!" );
 296             block_FifoEmpty( p_dec->p_owner->p_fifo );
 297         }
 298
 299         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 300     }
 301     else
 302     {
 303         if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
 304         {
 305             if( p_block ) block_Release( p_block );
 306         }
 307         else
 308         {
 309             DecoderDecode( p_dec, p_block );
 310         }
 311     }
 312 }
 313
 314 void input_DecoderDiscontinuity( decoder_t * p_dec, vlc_bool_t b_flush )
 315 {
 316     block_t *p_null;
 317
 318     /* Empty the fifo */
 319     if( p_dec->p_owner->b_own_thread && b_flush )
 320         block_FifoEmpty( p_dec->p_owner->p_fifo );
 321
 322     /* Send a special block */
 323     p_null = block_New( p_dec, 128 );
 324     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 325     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 326     if( p_dec->p_owner->p_packetizer && b_flush )
 327         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 328     memset( p_null->p_buffer, 0, p_null->i_buffer );
 329
 330     input_DecoderDecode( p_dec, p_null );
 331 }
 332
 333 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
 334 {
 335     if( p_dec->p_owner->b_own_thread
 336      && block_FifoCount( p_dec->p_owner->p_fifo ) > 0 )
 337     {
 338         return VLC_FALSE;
 339     }
 340     return VLC_TRUE;
 341 }
 342
 343 void input_DecoderIsCcPresent( decoder_t *p_dec, vlc_bool_t pb_present[4] )
 344 {
 345     int i;
 346
 347     vlc_mutex_lock( &p_dec->p_owner->lock_cc );
 348     for( i = 0; i < 4; i++ )
 349         pb_present[i] =  p_dec->p_owner->pb_cc_present[i];
 350     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 351 }
 352 int input_DecoderSetCcState( decoder_t *p_dec, vlc_bool_t b_decode, int i_channel )
 353 {
 354     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 355
 356     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 357
 358     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 359         return VLC_EGENERIC;
 360
 361     if( b_decode )
 362     {
 363         static const vlc_fourcc_t fcc[4] = {
 364             VLC_FOURCC('c', 'c', '1', ' '),
 365             VLC_FOURCC('c', 'c', '2', ' '),
 366             VLC_FOURCC('c', 'c', '3', ' '),
 367             VLC_FOURCC('c', 'c', '4', ' '),
 368         };
 369         decoder_t *p_cc;
 370         es_format_t fmt;
 371
 372         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 373         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER );
 374         if( !p_cc )
 375         {
 376             msg_Err( p_dec, "could not create decoder" );
 377             intf_UserFatal( p_dec, VLC_FALSE, _("Streaming / Transcoding failed"),
 378                             _("VLC could not open the decoder module.") );
 379             return VLC_EGENERIC;
 380         }
 381         else if( !p_cc->p_module )
 382         {
 383             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 384             DeleteDecoder( p_cc );
 385             vlc_object_release( p_cc );
 386             return VLC_EGENERIC;
 387         }
 388
 389         vlc_mutex_lock( &p_owner->lock_cc );
 390         p_dec->p_owner->pp_cc[i_channel] = p_cc;
 391         vlc_mutex_unlock( &p_owner->lock_cc );
 392     }
 393     else
 394     {
 395         decoder_t *p_cc;
 396
 397         vlc_mutex_lock( &p_owner->lock_cc );
 398         p_cc = p_dec->p_owner->pp_cc[i_channel];
 399         p_dec->p_owner->pp_cc[i_channel] = NULL;
 400         vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 401
 402         if( p_cc )
 403         {
 404             vlc_object_kill( p_cc );
 405             module_Unneed( p_cc, p_cc->p_module );
 406             DeleteDecoder( p_cc );
 407             vlc_object_release( p_cc );
 408         }
 409     }
 410     return VLC_SUCCESS;
 411 }
 412 int input_DecoderGetCcState( decoder_t *p_dec, vlc_bool_t *pb_decode, int i_channel )
 413 {
 414     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 415
 416     *pb_decode = VLC_FALSE;
 417     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 418         return VLC_EGENERIC;
 419
 420     vlc_mutex_lock( &p_owner->lock_cc );
 421     *pb_decode = p_dec->p_owner->pp_cc[i_channel] != NULL;
 422     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 423     return VLC_EGENERIC;
 424 }
 425
 426 /**
 427  * Create a decoder object
 428  *
 429  * \param p_input the input thread
 430  * \param p_es the es descriptor
 431  * \param i_object_type Object type as define in include/vlc_objects.h
 432  * \return the decoder object
 433  */
 434 static decoder_t * CreateDecoder( input_thread_t *p_input,
 435                                   es_format_t *fmt, int i_object_type )
 436 {
 437     decoder_t *p_dec;
 438     decoder_owner_sys_t *p_owner;
 439     int i;
 440
 441     p_dec = vlc_object_create( p_input, i_object_type );
 442     if( p_dec == NULL )
 443     {
 444         msg_Err( p_input, "out of memory" );
 445         return NULL;
 446     }
 447
 448     p_dec->pf_decode_audio = 0;
 449     p_dec->pf_decode_video = 0;
 450     p_dec->pf_decode_sub = 0;
 451     p_dec->pf_get_cc = 0;
 452     p_dec->pf_packetize = 0;
 453
 454     /* Initialize the decoder fifo */
 455     p_dec->p_module = NULL;
 456
 457     memset( &null_es_format, 0, sizeof(es_format_t) );
 458     es_format_Copy( &p_dec->fmt_in, fmt );
 459     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 460
 461     /* Allocate our private structure for the decoder */
 462     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 463     if( p_dec->p_owner == NULL )
 464     {
 465         msg_Err( p_dec, "out of memory" );
 466         return NULL;
 467     }
 468     p_dec->p_owner->b_own_thread = VLC_TRUE;
 469     p_dec->p_owner->i_preroll_end = -1;
 470     p_dec->p_owner->p_input = p_input;
 471     p_dec->p_owner->p_aout = NULL;
 472     p_dec->p_owner->p_aout_input = NULL;
 473     p_dec->p_owner->p_vout = NULL;
 474     p_dec->p_owner->p_spu_vout = NULL;
 475     p_dec->p_owner->i_spu_channel = 0;
 476     p_dec->p_owner->p_sout = p_input->p->p_sout;
 477     p_dec->p_owner->p_sout_input = NULL;
 478     p_dec->p_owner->p_packetizer = NULL;
 479
 480     /* decoder fifo */
 481     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 482     {
 483         msg_Err( p_dec, "out of memory" );
 484         return NULL;
 485     }
 486
 487     /* Set buffers allocation callbacks for the decoders */
 488     p_dec->pf_aout_buffer_new = aout_new_buffer;
 489     p_dec->pf_aout_buffer_del = aout_del_buffer;
 490     p_dec->pf_vout_buffer_new = vout_new_buffer;
 491     p_dec->pf_vout_buffer_del = vout_del_buffer;
 492     p_dec->pf_picture_link    = vout_link_picture;
 493     p_dec->pf_picture_unlink  = vout_unlink_picture;
 494     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 495     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 496
 497     vlc_object_attach( p_dec, p_input );
 498
 499     /* Find a suitable decoder/packetizer module */
 500     if( i_object_type == VLC_OBJECT_DECODER )
 501         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 502     else
 503         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 504
 505     /* Check if decoder requires already packetized data */
 506     if( i_object_type == VLC_OBJECT_DECODER &&
 507         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 508     {
 509         p_dec->p_owner->p_packetizer =
 510             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 511         if( p_dec->p_owner->p_packetizer )
 512         {
 513             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 514                             &p_dec->fmt_in );
 515
 516             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 517                             &null_es_format );
 518
 519             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 520
 521             p_dec->p_owner->p_packetizer->p_module =
 522                 module_Need( p_dec->p_owner->p_packetizer,
 523                              "packetizer", "$packetizer", 0 );
 524
 525             if( !p_dec->p_owner->p_packetizer->p_module )
 526             {
 527                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 528                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 529                 vlc_object_release( p_dec->p_owner->p_packetizer );
 530             }
 531         }
 532     }
 533
 534     /* Copy ourself the input replay gain */
 535     if( fmt->i_cat == AUDIO_ES )
 536     {
 537         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 538         {
 539             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 540             {
 541                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 542                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 543             }
 544             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 545             {
 546                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 547                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 548             }
 549         }
 550     }
 551     /* */
 552     p_owner->b_cc_supported = VLC_FALSE;
 553     if( i_object_type == VLC_OBJECT_DECODER )
 554     {
 555         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 556             p_owner->b_cc_supported = VLC_TRUE;
 557         if( p_dec->pf_get_cc )
 558             p_owner->b_cc_supported = VLC_TRUE;
 559     }
 560
 561     vlc_mutex_init( p_dec, &p_owner->lock_cc );
 562     for( i = 0; i < 4; i++ )
 563     {
 564         p_owner->pb_cc_present[i] = VLC_FALSE;
 565         p_owner->pp_cc[i] = NULL;
 566     }
 567     return p_dec;
 568 }
 569
 570 /**
 571  * The decoding main loop
 572  *
 573  * \param p_dec the decoder
 574  * \return 0
 575  */
 576 static int DecoderThread( decoder_t * p_dec )
 577 {
 578     block_t *p_block;
 579
 580     /* The decoder's main loop */
 581     while( !p_dec->b_die && !p_dec->b_error )
 582     {
 583         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 584         {
 585             p_dec->b_error = 1;
 586             break;
 587         }
 588         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 589         {
 590             break;
 591         }
 592     }
 593
 594     while( !p_dec->b_die )
 595     {
 596         /* Trash all received PES packets */
 597         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 598         if( p_block ) block_Release( p_block );
 599     }
 600
 601     /* We do it here because of the dll loader that wants close() in the
 602      * same thread than open()/decode() */
 603     module_Unneed( p_dec, p_dec->p_module );
 604
 605     return 0;
 606 }
 607
 608 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 609 {
 610     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 611         *pi_preroll = INT64_MAX;
 612     else if( p->i_pts > 0 )
 613         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 614     else if( p->i_dts > 0 )
 615         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 616 }
 617 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 618 {
 619     input_thread_t *p_input = p_dec->p_owner->p_input;
 620     const int i_rate = p_block->i_rate;
 621     aout_buffer_t *p_aout_buf;
 622
 623     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 624     {
 625         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 626         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 627         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 628
 629         if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 630         {
 631             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 632                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 633             continue;
 634         }
 635
 636         if( p_dec->p_owner->i_preroll_end > 0 )
 637         {
 638             /* FIXME TODO flush audio output (don't know how to do that) */
 639             msg_Dbg( p_dec, "End of audio preroll" );
 640             p_dec->p_owner->i_preroll_end = -1;
 641         }
 642         aout_DecPlay( p_dec->p_owner->p_aout,
 643                       p_dec->p_owner->p_aout_input,
 644                       p_aout_buf, i_rate );
 645     }
 646 }
 647 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
 648 {
 649     block_t *p_cc;
 650     vlc_bool_t pb_present[4];
 651     int i;
 652     int i_cc_decoder;
 653
 654     assert( p_dec_cc->pf_get_cc != NULL );
 655
 656     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
 657     if( !p_dec->p_owner->b_cc_supported )
 658         return;
 659
 660     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
 661     if( !p_cc )
 662         return;
 663
 664     vlc_mutex_lock( &p_dec->p_owner->lock_cc );
 665     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
 666     {
 667         p_dec->p_owner->pb_cc_present[i] |= pb_present[i];
 668         if( p_dec->p_owner->pp_cc[i] )
 669             i_cc_decoder++;
 670     }
 671
 672     for( i = 0; i < 4; i++ )
 673     {
 674         if( !p_dec->p_owner->pp_cc[i] )
 675             continue;
 676
 677         if( i_cc_decoder > 1 )
 678             DecoderDecode( p_dec->p_owner->pp_cc[i], block_Duplicate( p_cc ) );
 679         else
 680             DecoderDecode( p_dec->p_owner->pp_cc[i], p_cc );
 681         i_cc_decoder--;
 682     }
 683     vlc_mutex_unlock( &p_dec->p_owner->lock_cc );
 684 }
 685 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 686 {
 687     vlc_mutex_lock( &p_vout->picture_lock );
 688
 689     if( p_pic->i_status == READY_PICTURE )
 690     {
 691         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 692         p_pic->date = 1;
 693     }
 694     else if( p_pic->i_refcount > 0 )
 695     {
 696         p_pic->i_status = DISPLAYED_PICTURE;
 697     }
 698     else
 699     {
 700         p_pic->i_status = DESTROYED_PICTURE;
 701         p_vout->i_heap_size--;
 702     }
 703
 704     vlc_mutex_unlock( &p_vout->picture_lock );
 705 }
 706 static void VoutFlushPicture( vout_thread_t *p_vout )
 707 {
 708     int i;
 709     vlc_mutex_lock( &p_vout->picture_lock );
 710     for( i = 0; i < p_vout->render.i_pictures; i++ )
 711     {
 712         picture_t *p_pic = p_vout->render.pp_picture[i];
 713
 714         if( p_pic->i_status == READY_PICTURE ||
 715             p_pic->i_status == DISPLAYED_PICTURE )
 716         {
 717             /* We cannot change picture status if it is in READY_PICTURE state,
 718              * Just make sure they won't be displayed */
 719             p_pic->date = 1;
 720         }
 721     }
 722     vlc_mutex_unlock( &p_vout->picture_lock );
 723 }
 724 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
 725 {
 726     input_thread_t *p_input = p_dec->p_owner->p_input;
 727     picture_t *p_pic;
 728
 729     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 730     {
 731         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 732         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
 733         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 734
 735         if( p_pic->date < p_dec->p_owner->i_preroll_end )
 736         {
 737             VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
 738             continue;
 739         }
 740
 741         if( p_dec->p_owner->i_preroll_end > 0 )
 742         {
 743             msg_Dbg( p_dec, "End of video preroll" );
 744             if( p_dec->p_owner->p_vout )
 745                 VoutFlushPicture( p_dec->p_owner->p_vout );
 746             /* */
 747             p_dec->p_owner->i_preroll_end = -1;
 748         }
 749
 750         if( ( !p_dec->p_owner->p_packetizer || !p_dec->p_owner->p_packetizer->pf_get_cc ) && p_dec->pf_get_cc )
 751             DecoderGetCc( p_dec, p_dec );
 752
 753         vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 754                           p_pic->date );
 755         vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 756     }
 757 }
 758
 759 /**
 760  * Decode a block
 761  *
 762  * \param p_dec the decoder object
 763  * \param p_block the block to decode
 764  * \return VLC_SUCCESS or an error code
 765  */
 766 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 767 {
 768     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 769     const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
 770
 771     if( p_block && p_block->i_buffer <= 0 )
 772     {
 773         block_Release( p_block );
 774         return VLC_SUCCESS;
 775     }
 776
 777     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 778     {
 779         block_t *p_sout_block;
 780
 781         while( ( p_sout_block =
 782                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 783         {
 784             if( !p_dec->p_owner->p_sout_input )
 785             {
 786                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 787
 788                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 789                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 790                 if( p_dec->fmt_in.psz_language )
 791                 {
 792                     if( p_dec->p_owner->sout.psz_language )
 793                         free( p_dec->p_owner->sout.psz_language );
 794                     p_dec->p_owner->sout.psz_language =
 795                         strdup( p_dec->fmt_in.psz_language );
 796                 }
 797
 798                 p_dec->p_owner->p_sout_input =
 799                     sout_InputNew( p_dec->p_owner->p_sout,
 800                                    &p_dec->p_owner->sout );
 801
 802                 if( p_dec->p_owner->p_sout_input == NULL )
 803                 {
 804                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 805                              (char *)&p_dec->p_owner->sout.i_codec );
 806                     p_dec->b_error = VLC_TRUE;
 807
 808                     while( p_sout_block )
 809                     {
 810                         block_t *p_next = p_sout_block->p_next;
 811                         block_Release( p_sout_block );
 812                         p_sout_block = p_next;
 813                     }
 814                     break;
 815                 }
 816             }
 817
 818             while( p_sout_block )
 819             {
 820                 block_t *p_next = p_sout_block->p_next;
 821
 822                 p_sout_block->p_next = NULL;
 823                 p_sout_block->i_rate = i_rate;
 824
 825                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 826                                       p_sout_block );
 827
 828                 p_sout_block = p_next;
 829             }
 830
 831             /* For now it's enough, as only sout inpact on this flag */
 832             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 833                 p_dec->p_owner->p_input->p->b_out_pace_control )
 834             {
 835                 msg_Dbg( p_dec, "switching to sync mode" );
 836                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 837             }
 838             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 839                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 840             {
 841                 msg_Dbg( p_dec, "switching to async mode" );
 842                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 843             }
 844         }
 845     }
 846     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 847     {
 848         if( p_block )
 849             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 850
 851         if( p_dec->p_owner->p_packetizer )
 852         {
 853             block_t *p_packetized_block;
 854             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 855
 856             while( (p_packetized_block =
 857                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
 858             {
 859                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 860                 {
 861                     es_format_Clean( &p_dec->fmt_in );
 862                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 863                 }
 864
 865                 while( p_packetized_block )
 866                 {
 867                     block_t *p_next = p_packetized_block->p_next;
 868                     p_packetized_block->p_next = NULL;
 869                     p_packetized_block->i_rate = i_rate;
 870
 871                     DecoderDecodeAudio( p_dec, p_packetized_block );
 872
 873                     p_packetized_block = p_next;
 874                 }
 875             }
 876         }
 877         else if( p_block )
 878         {
 879             DecoderDecodeAudio( p_dec, p_block );
 880         }
 881     }
 882     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 883     {
 884         if( p_block )
 885             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 886
 887         if( p_dec->p_owner->p_packetizer )
 888         {
 889             block_t *p_packetized_block;
 890             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 891
 892             while( (p_packetized_block =
 893                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
 894             {
 895                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 896                 {
 897                     es_format_Clean( &p_dec->fmt_in );
 898                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 899                 }
 900                 if( p_packetizer->pf_get_cc )
 901                     DecoderGetCc( p_dec, p_packetizer );
 902
 903                 while( p_packetized_block )
 904                 {
 905                     block_t *p_next = p_packetized_block->p_next;
 906                     p_packetized_block->p_next = NULL;
 907                     p_packetized_block->i_rate = i_rate;
 908
 909                     DecoderDecodeVideo( p_dec, p_packetized_block );
 910
 911                     p_packetized_block = p_next;
 912                 }
 913             }
 914         }
 915         else if( p_block )
 916         {
 917             DecoderDecodeVideo( p_dec, p_block );
 918         }
 919     }
 920     else if( p_dec->fmt_in.i_cat == SPU_ES )
 921     {
 922         input_thread_t *p_input = p_dec->p_owner->p_input;
 923         vout_thread_t *p_vout;
 924         subpicture_t *p_spu;
 925
 926         if( p_block )
 927             DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 928
 929         while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
 930         {
 931             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 932             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
 933             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 934
 935             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 936             if( p_vout && p_sys->p_spu_vout == p_vout )
 937             {
 938                 /* Prerool does not work very well with subtitle */
 939                 if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 940                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_dec->p_owner->i_preroll_end ) )
 941                     spu_DestroySubpicture( p_vout->p_spu, p_spu );
 942                 else
 943                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 944             }
 945             else
 946             {
 947                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
 948             }
 949             if( p_vout )
 950                 vlc_object_release( p_vout );
 951         }
 952     }
 953     else
 954     {
 955         msg_Err( p_dec, "unknown ES format" );
 956         p_dec->b_error = 1;
 957     }
 958
 959     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 960 }
 961
 962 /**
 963  * Destroys a decoder object
 964  *
 965  * \param p_dec the decoder object
 966  * \return nothing
 967  */
 968 static void DeleteDecoder( decoder_t * p_dec )
 969 {
 970     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
 971              (char*)&p_dec->fmt_in.i_codec,
 972              (unsigned)block_FifoCount( p_dec->p_owner->p_fifo ) );
 973
 974     /* Free all packets still in the decoder fifo. */
 975     block_FifoEmpty( p_dec->p_owner->p_fifo );
 976     block_FifoRelease( p_dec->p_owner->p_fifo );
 977
 978     /* Cleanup */
 979     if( p_dec->p_owner->p_aout_input )
 980         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 981
 982     if( p_dec->p_owner->p_vout )
 983     {
 984         int i_pic;
 985
 986 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 987         /* Hack to make sure all the the pictures are freed by the decoder */
 988         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 989              i_pic++ )
 990         {
 991             if( p_pic->i_status == RESERVED_PICTURE )
 992                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 993             if( p_pic->i_refcount > 0 )
 994                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 995         }
 996 #undef p_pic
 997
 998         /* We are about to die. Reattach video output to p_vlc. */
 999         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
1000     }
1001
1002     if( p_dec->p_owner->p_sout_input )
1003     {
1004         sout_InputDelete( p_dec->p_owner->p_sout_input );
1005         es_format_Clean( &p_dec->p_owner->sout );
1006     }
1007
1008     if( p_dec->fmt_in.i_cat == SPU_ES )
1009     {
1010         vout_thread_t *p_vout;
1011
1012         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1013         if( p_vout )
1014         {
1015             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1016                          p_dec->p_owner->i_spu_channel );
1017             vlc_object_release( p_vout );
1018         }
1019     }
1020
1021     es_format_Clean( &p_dec->fmt_in );
1022     es_format_Clean( &p_dec->fmt_out );
1023
1024     if( p_dec->p_owner->p_packetizer )
1025     {
1026         module_Unneed( p_dec->p_owner->p_packetizer,
1027                        p_dec->p_owner->p_packetizer->p_module );
1028         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
1029         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
1030         vlc_object_detach( p_dec->p_owner->p_packetizer );
1031         vlc_object_release( p_dec->p_owner->p_packetizer );
1032     }
1033
1034     vlc_mutex_destroy( &p_dec->p_owner->lock_cc );
1035
1036     vlc_object_detach( p_dec );
1037
1038     free( p_dec->p_owner );
1039 }
1040
1041 /*****************************************************************************
1042  * Buffers allocation callbacks for the decoders
1043  *****************************************************************************/
1044 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
1045 {
1046     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1047     aout_buffer_t *p_buffer;
1048
1049     if( p_sys->p_aout_input != NULL &&
1050         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
1051           p_dec->fmt_out.audio.i_original_channels !=
1052               p_sys->audio.i_original_channels ||
1053           p_dec->fmt_out.audio.i_bytes_per_frame !=
1054               p_sys->audio.i_bytes_per_frame ) )
1055     {
1056         /* Parameters changed, restart the aout */
1057         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
1058         p_sys->p_aout_input = NULL;
1059     }
1060
1061     if( p_sys->p_aout_input == NULL )
1062     {
1063         audio_sample_format_t format;
1064         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
1065
1066         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1067         p_sys->audio = p_dec->fmt_out.audio;
1068
1069         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
1070         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
1071                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1072         {
1073             if ( i_force_dolby == 1 )
1074             {
1075                 format.i_original_channels = format.i_original_channels |
1076                                              AOUT_CHAN_DOLBYSTEREO;
1077             }
1078             else /* i_force_dolby == 2 */
1079             {
1080                 format.i_original_channels = format.i_original_channels &
1081                                              ~AOUT_CHAN_DOLBYSTEREO;
1082             }
1083         }
1084
1085         p_sys->p_aout_input =
1086             aout_DecNew( p_dec, &p_sys->p_aout, &format, &p_dec->fmt_out.audio_replay_gain );
1087         if( p_sys->p_aout_input == NULL )
1088         {
1089             msg_Err( p_dec, "failed to create audio output" );
1090             p_dec->b_error = VLC_TRUE;
1091             return NULL;
1092         }
1093         p_dec->fmt_out.audio.i_bytes_per_frame =
1094             p_sys->audio.i_bytes_per_frame;
1095     }
1096
1097     p_buffer = aout_DecNewBuffer( p_sys->p_aout_input, 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