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 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@netcourrier.com>
   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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include <stdlib.h>
  30 #include <vlc/vlc.h>
  31
  32 #include <vlc/decoder.h>
  33 #include <vlc/vout.h>
  34 #include <vlc/input.h>
  35
  36 #include "stream_output.h"
  37 #include "input_internal.h"
  38
  39 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
  40 static void        DeleteDecoder( decoder_t * );
  41
  42 static int         DecoderThread( decoder_t * );
  43 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  44
  45 /* Buffers allocation callbacks for the decoders */
  46 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  47 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  48
  49 static picture_t *vout_new_buffer( decoder_t * );
  50 static void vout_del_buffer( decoder_t *, picture_t * );
  51 static void vout_link_picture( decoder_t *, picture_t * );
  52 static void vout_unlink_picture( decoder_t *, picture_t * );
  53
  54 static es_format_t null_es_format = {0};
  55
  56 struct decoder_owner_sys_t
  57 {
  58     vlc_bool_t      b_own_thread;
  59
  60     input_thread_t  *p_input;
  61
  62     aout_instance_t *p_aout;
  63     aout_input_t    *p_aout_input;
  64
  65     vout_thread_t   *p_vout;
  66
  67     sout_instance_t         *p_sout;
  68     sout_packetizer_input_t *p_sout_input;
  69
  70     /* Some decoders require already packetized data (ie. not truncated) */
  71     decoder_t *p_packetizer;
  72
  73     /* Current format in use by the output */
  74     video_format_t video;
  75     audio_format_t audio;
  76     es_format_t    sout;
  77
  78     /* fifo */
  79     block_fifo_t *p_fifo;
  80 };
  81
  82
  83 /**
  84  * Spawns a new decoder thread
  85  *
  86  * \param p_input the input thread
  87  * \param p_es the es descriptor
  88  * \return the spawned decoder object
  89  */
  90 decoder_t *input_DecoderNew( input_thread_t *p_input,
  91                              es_format_t *fmt, vlc_bool_t b_force_decoder )
  92 {
  93     decoder_t   *p_dec = NULL;
  94     vlc_value_t val;
  95
  96     /* If we are in sout mode, search for packetizer module */
  97     if( p_input->p_sout && !b_force_decoder )
  98     {
  99         /* Create the decoder configuration structure */
 100         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
 101         if( p_dec == NULL )
 102         {
 103             msg_Err( p_input, "could not create packetizer" );
 104             return NULL;
 105         }
 106     }
 107     else
 108     {
 109         /* Create the decoder configuration structure */
 110         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
 111         if( p_dec == NULL )
 112         {
 113             msg_Err( p_input, "could not create decoder" );
 114             return NULL;
 115         }
 116     }
 117
 118     if( !p_dec->p_module )
 119     {
 120         msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 121                  "VLC probably does not support this sound or video format.",
 122                  (char*)&p_dec->fmt_in.i_codec );
 123
 124         DeleteDecoder( p_dec );
 125         vlc_object_destroy( p_dec );
 126         return NULL;
 127     }
 128
 129     if( p_input->p_sout && p_input->input.b_can_pace_control &&
 130         !b_force_decoder )
 131     {
 132         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 133         p_dec->p_owner->b_own_thread = VLC_FALSE;
 134     }
 135     else
 136     {
 137         var_Get( p_input, "minimize-threads", &val );
 138         p_dec->p_owner->b_own_thread = !val.b_bool;
 139     }
 140
 141     if( p_dec->p_owner->b_own_thread )
 142     {
 143         int i_priority;
 144         if( fmt->i_cat == AUDIO_ES )
 145             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 146         else
 147             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 148
 149         /* Spawn the decoder thread */
 150         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 151                                i_priority, VLC_FALSE ) )
 152         {
 153             msg_Err( p_dec, "cannot spawn decoder thread \"%s\"",
 154                              p_dec->p_module->psz_object_name );
 155             module_Unneed( p_dec, p_dec->p_module );
 156             DeleteDecoder( p_dec );
 157             vlc_object_destroy( p_dec );
 158             return NULL;
 159         }
 160     }
 161
 162     return p_dec;
 163 }
 164
 165 /**
 166  * Kills a decoder thread and waits until it's finished
 167  *
 168  * \param p_input the input thread
 169  * \param p_es the es descriptor
 170  * \return nothing
 171  */
 172 void input_DecoderDelete( decoder_t *p_dec )
 173 {
 174     p_dec->b_die = VLC_TRUE;
 175
 176     if( p_dec->p_owner->b_own_thread )
 177     {
 178         /* Make sure the thread leaves the function by
 179          * sending it an empty block. */
 180         block_t *p_block = block_New( p_dec, 0 );
 181         input_DecoderDecode( p_dec, p_block );
 182
 183         vlc_thread_join( p_dec );
 184
 185         /* Don't module_Unneed() here because of the dll loader that wants
 186          * close() in the same thread than open()/decode() */
 187     }
 188     else
 189     {
 190         module_Unneed( p_dec, p_dec->p_module );
 191     }
 192
 193     /* Delete decoder configuration */
 194     DeleteDecoder( p_dec );
 195
 196     /* Delete the decoder */
 197     vlc_object_destroy( p_dec );
 198 }
 199
 200 /**
 201  * Put a block_t in the decoder's fifo.
 202  *
 203  * \param p_dec the decoder object
 204  * \param p_block the data block
 205  */
 206 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 207 {
 208     if( p_dec->p_owner->b_own_thread )
 209     {
 210         if( p_dec->p_owner->p_input->b_out_pace_control )
 211         {
 212             /* FIXME !!!!! */
 213             while( !p_dec->b_die && !p_dec->b_error &&
 214                    p_dec->p_owner->p_fifo->i_depth > 10 )
 215             {
 216                 msleep( 1000 );
 217             }
 218         }
 219         else if( p_dec->p_owner->p_fifo->i_size > 50000000 /* 50 MB */ )
 220         {
 221             /* FIXME: ideally we would check the time amount of data
 222              * in the fifo instead of its size. */
 223             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 224                       "consummed quickly enough), resetting fifo!" );
 225             block_FifoEmpty( p_dec->p_owner->p_fifo );
 226         }
 227
 228         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 229     }
 230     else
 231     {
 232         if( p_dec->b_error || p_block->i_buffer <= 0 )
 233         {
 234             block_Release( p_block );
 235         }
 236         else
 237         {
 238             DecoderDecode( p_dec, p_block );
 239         }
 240     }
 241 }
 242
 243 void input_DecoderDiscontinuity( decoder_t * p_dec )
 244 {
 245     block_t *p_null;
 246
 247     /* Empty the fifo */
 248     if( p_dec->p_owner->b_own_thread )
 249     {
 250         block_FifoEmpty( p_dec->p_owner->p_fifo );
 251     }
 252
 253     /* Send a special block */
 254     p_null = block_New( p_dec, 128 );
 255     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 256     memset( p_null->p_buffer, 0, p_null->i_buffer );
 257
 258     input_DecoderDecode( p_dec, p_null );
 259 }
 260
 261 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
 262 {
 263     if( p_dec->p_owner->b_own_thread && p_dec->p_owner->p_fifo->i_depth > 0 )
 264     {
 265         return VLC_FALSE;
 266     }
 267     return VLC_TRUE;
 268 }
 269
 270 #if 0
 271 /**
 272  * Create a NULL packet for padding in case of a data loss
 273  *
 274  * \param p_input the input thread
 275  * \param p_es es descriptor
 276  * \return nothing
 277  */
 278 static void input_NullPacket( input_thread_t * p_input,
 279                               es_descriptor_t * p_es )
 280 {
 281 #if 0
 282     block_t *p_block = block_New( p_input, PADDING_PACKET_SIZE );
 283     if( p_block )
 284     {
 285         memset( p_block->p_buffer, 0, PADDING_PACKET_SIZE );
 286         p_block->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 287
 288         block_FifoPut( p_es->p_dec->p_owner->p_fifo, p_block );
 289     }
 290 #endif
 291 }
 292
 293 /**
 294  * Send a NULL packet to the decoders
 295  *
 296  * \param p_input the input thread
 297  * \return nothing
 298  */
 299 void input_EscapeDiscontinuity( input_thread_t * p_input )
 300 {
 301 #if 0
 302     unsigned int i_es, i;
 303
 304     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 305     {
 306         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 307
 308         if( p_es->p_dec != NULL )
 309         {
 310             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 311             {
 312                 input_NullPacket( p_input, p_es );
 313             }
 314         }
 315     }
 316 #endif
 317 }
 318
 319 /**
 320  * Send a NULL packet to the audio decoders
 321  *
 322  * \param p_input the input thread
 323  * \return nothing
 324  */
 325 void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
 326 {
 327 #if 0
 328     unsigned int i_es, i;
 329
 330     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 331     {
 332         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 333
 334         if( p_es->p_dec != NULL && p_es->i_cat == AUDIO_ES )
 335         {
 336             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 337             {
 338                 input_NullPacket( p_input, p_es );
 339             }
 340         }
 341     }
 342 #endif
 343 }
 344 #endif
 345
 346 /**
 347  * Create a decoder object
 348  *
 349  * \param p_input the input thread
 350  * \param p_es the es descriptor
 351  * \param i_object_type Object type as define in include/vlc_objects.h
 352  * \return the decoder object
 353  */
 354 static decoder_t * CreateDecoder( input_thread_t *p_input,
 355                                   es_format_t *fmt, int i_object_type )
 356 {
 357     decoder_t *p_dec;
 358
 359     p_dec = vlc_object_create( p_input, i_object_type );
 360     if( p_dec == NULL )
 361     {
 362         msg_Err( p_input, "out of memory" );
 363         return NULL;
 364     }
 365
 366     p_dec->pf_decode_audio = 0;
 367     p_dec->pf_decode_video = 0;
 368     p_dec->pf_decode_sub = 0;
 369     p_dec->pf_packetize = 0;
 370
 371     /* Initialize the decoder fifo */
 372     p_dec->p_module = NULL;
 373
 374
 375     es_format_Copy( &p_dec->fmt_in, fmt );
 376     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 377
 378     /* Allocate our private structure for the decoder */
 379     p_dec->p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 380     if( p_dec->p_owner == NULL )
 381     {
 382         msg_Err( p_dec, "out of memory" );
 383         return NULL;
 384     }
 385     p_dec->p_owner->b_own_thread = VLC_TRUE;
 386     p_dec->p_owner->p_input = p_input;
 387     p_dec->p_owner->p_aout = NULL;
 388     p_dec->p_owner->p_aout_input = NULL;
 389     p_dec->p_owner->p_vout = NULL;
 390     p_dec->p_owner->p_sout = p_input->p_sout;
 391     p_dec->p_owner->p_sout_input = NULL;
 392     p_dec->p_owner->p_packetizer = NULL;
 393
 394
 395     /* decoder fifo */
 396     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 397     {
 398         msg_Err( p_dec, "out of memory" );
 399         return NULL;
 400     }
 401     /* Set buffers allocation callbacks for the decoders */
 402     p_dec->pf_aout_buffer_new = aout_new_buffer;
 403     p_dec->pf_aout_buffer_del = aout_del_buffer;
 404     p_dec->pf_vout_buffer_new = vout_new_buffer;
 405     p_dec->pf_vout_buffer_del = vout_del_buffer;
 406     p_dec->pf_picture_link    = vout_link_picture;
 407     p_dec->pf_picture_unlink  = vout_unlink_picture;
 408
 409     vlc_object_attach( p_dec, p_input );
 410
 411     /* Find a suitable decoder/packetizer module */
 412     if( i_object_type == VLC_OBJECT_DECODER )
 413         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 414     else
 415         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 416
 417     /* Check if decoder requires already packetized data */
 418     if( i_object_type == VLC_OBJECT_DECODER &&
 419         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 420     {
 421         p_dec->p_owner->p_packetizer =
 422             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 423         if( p_dec->p_owner->p_packetizer )
 424         {
 425             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 426                             &p_dec->fmt_in );
 427
 428             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 429                             &null_es_format );
 430
 431             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 432
 433             p_dec->p_owner->p_packetizer->p_module =
 434                 module_Need( p_dec->p_owner->p_packetizer,
 435                              "packetizer", "$packetizer", 0 );
 436
 437             if( !p_dec->p_owner->p_packetizer->p_module )
 438             {
 439                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 440                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 441                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 442             }
 443         }
 444     }
 445
 446     return p_dec;
 447 }
 448
 449 /**
 450  * The decoding main loop
 451  *
 452  * \param p_dec the decoder
 453  * \return 0
 454  */
 455 static int DecoderThread( decoder_t * p_dec )
 456 {
 457     block_t *p_block;
 458
 459     /* The decoder's main loop */
 460     while( !p_dec->b_die && !p_dec->b_error )
 461     {
 462         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 463         {
 464             p_dec->b_error = 1;
 465             break;
 466         }
 467         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 468         {
 469             break;
 470         }
 471     }
 472
 473     while( !p_dec->b_die )
 474     {
 475         /* Trash all received PES packets */
 476         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 477         if( p_block ) block_Release( p_block );
 478     }
 479
 480     /* We do it here because of the dll loader that wants close() in the
 481      * same thread than open()/decode() */
 482     module_Unneed( p_dec, p_dec->p_module );
 483
 484     return 0;
 485 }
 486
 487 /**
 488  * Decode a block
 489  *
 490  * \param p_dec the decoder object
 491  * \param p_block the block to decode
 492  * \return VLC_SUCCESS or an error code
 493  */
 494 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 495 {
 496     if( p_block->i_buffer <= 0 )
 497     {
 498         block_Release( p_block );
 499         return VLC_SUCCESS;
 500     }
 501
 502     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 503     {
 504         block_t *p_sout_block;
 505
 506         while( (p_sout_block = p_dec->pf_packetize( p_dec, &p_block )) )
 507         {
 508             if( !p_dec->p_owner->p_sout_input )
 509             {
 510                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 511
 512                 p_dec->p_owner->sout.i_group =p_dec->fmt_in.i_group;
 513                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 514                 if( p_dec->fmt_in.psz_language )
 515                 {
 516                     p_dec->p_owner->sout.psz_language =
 517                         strdup( p_dec->fmt_in.psz_language );
 518                 }
 519
 520                 p_dec->p_owner->p_sout_input =
 521                     sout_InputNew( p_dec->p_owner->p_sout,
 522                                    &p_dec->p_owner->sout );
 523
 524                 if( p_dec->p_owner->p_sout_input == NULL )
 525                 {
 526                     msg_Err( p_dec, "cannot create packetizer output" );
 527                     p_dec->b_error = VLC_TRUE;
 528
 529                     while( p_sout_block )
 530                     {
 531                         block_t *p_next = p_sout_block->p_next;
 532                         block_Release( p_sout_block );
 533                         p_sout_block = p_next;
 534                     }
 535                     break;
 536                 }
 537             }
 538
 539             while( p_sout_block )
 540             {
 541                 block_t       *p_next = p_sout_block->p_next;
 542
 543                 p_sout_block->p_next = NULL;
 544
 545                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 546                                       p_sout_block );
 547
 548                 p_sout_block = p_next;
 549             }
 550
 551             /* For now it's enough, as only sout inpact on this flag */
 552             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 553                 p_dec->p_owner->p_input->b_out_pace_control )
 554             {
 555                 msg_Dbg( p_dec, "switching to synch mode" );
 556                 p_dec->p_owner->p_input->b_out_pace_control = VLC_FALSE;
 557             }
 558             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 559                      !p_dec->p_owner->p_input->b_out_pace_control )
 560             {
 561                 msg_Dbg( p_dec, "switching to asynch mode" );
 562                 p_dec->p_owner->p_input->b_out_pace_control = VLC_TRUE;
 563             }
 564         }
 565     }
 566     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 567     {
 568         aout_buffer_t *p_aout_buf;
 569
 570         if( p_dec->p_owner->p_packetizer )
 571         {
 572             block_t *p_packetized_block;
 573             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 574
 575             while( (p_packetized_block =
 576                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 577             {
 578                 while( (p_aout_buf =
 579                         p_dec->pf_decode_audio( p_dec, &p_packetized_block )) )
 580                 {
 581                     aout_DecPlay( p_dec->p_owner->p_aout,
 582                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 583                 }
 584             }
 585         }
 586         else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 587         {
 588             aout_DecPlay( p_dec->p_owner->p_aout,
 589                           p_dec->p_owner->p_aout_input, p_aout_buf );
 590         }
 591     }
 592     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 593     {
 594         picture_t *p_pic;
 595
 596         if( p_dec->p_owner->p_packetizer )
 597         {
 598             block_t *p_packetized_block;
 599             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 600
 601             while( (p_packetized_block =
 602                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 603             {
 604                 while( (p_pic =
 605                         p_dec->pf_decode_video( p_dec, &p_packetized_block )) )
 606                 {
 607                     vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 608                                       p_pic->date );
 609                     vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 610                 }
 611             }
 612         }
 613         else while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 614         {
 615             vout_DatePicture( p_dec->p_owner->p_vout, p_pic, p_pic->date );
 616             vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 617         }
 618     }
 619     else if( p_dec->fmt_in.i_cat == SPU_ES )
 620     {
 621         p_dec->pf_decode_sub( p_dec, &p_block );
 622     }
 623     else
 624     {
 625         msg_Err( p_dec, "unknown ES format" );
 626         p_dec->b_error = 1;
 627     }
 628
 629     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 630 }
 631
 632 /**
 633  * Destroys a decoder object
 634  *
 635  * \param p_dec the decoder object
 636  * \return nothing
 637  */
 638 static void DeleteDecoder( decoder_t * p_dec )
 639 {
 640     vlc_object_detach( p_dec );
 641
 642     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 643              (char*)&p_dec->fmt_in.i_codec,
 644              p_dec->p_owner->p_fifo->i_depth );
 645
 646     /* Free all packets still in the decoder fifo. */
 647     block_FifoEmpty( p_dec->p_owner->p_fifo );
 648     block_FifoRelease( p_dec->p_owner->p_fifo );
 649
 650    /* Cleanup */
 651     if( p_dec->p_owner->p_aout_input )
 652         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 653
 654     if( p_dec->p_owner->p_vout )
 655     {
 656         int i_pic;
 657
 658 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 659         /* Hack to make sure all the the pictures are freed by the decoder */
 660         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 661              i_pic++ )
 662         {
 663             if( p_pic->i_status == RESERVED_PICTURE )
 664                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 665             if( p_pic->i_refcount > 0 )
 666                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 667         }
 668 #undef p_pic
 669
 670         /* We are about to die. Reattach video output to p_vlc. */
 671         vout_Request( p_dec, p_dec->p_owner->p_vout, 0, 0, 0, 0 );
 672     }
 673
 674     if( p_dec->p_owner->p_sout_input )
 675     {
 676         sout_InputDelete( p_dec->p_owner->p_sout_input );
 677         es_format_Clean( &p_dec->p_owner->sout );
 678     }
 679
 680     es_format_Clean( &p_dec->fmt_in );
 681     es_format_Clean( &p_dec->fmt_out );
 682
 683     if( p_dec->p_owner->p_packetizer )
 684     {
 685         module_Unneed( p_dec->p_owner->p_packetizer,
 686                        p_dec->p_owner->p_packetizer->p_module );
 687         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 688         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 689         vlc_object_detach( p_dec->p_owner->p_packetizer );
 690         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 691     }
 692
 693     free( p_dec->p_owner );
 694 }
 695
 696 /*****************************************************************************
 697  * Buffers allocation callbacks for the decoders
 698  *****************************************************************************/
 699 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 700 {
 701     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 702     aout_buffer_t *p_buffer;
 703
 704     if( p_sys->p_aout_input != NULL &&
 705         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 706           p_dec->fmt_out.audio.i_original_channels !=
 707               p_sys->audio.i_original_channels ||
 708           p_dec->fmt_out.audio.i_bytes_per_frame !=
 709               p_sys->audio.i_bytes_per_frame ) )
 710     {
 711         /* Parameters changed, restart the aout */
 712         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 713         p_sys->p_aout_input = NULL;
 714     }
 715
 716     if( p_sys->p_aout_input == NULL )
 717     {
 718         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 719         p_sys->audio = p_dec->fmt_out.audio;
 720         p_sys->p_aout_input =
 721             aout_DecNew( p_dec, &p_sys->p_aout, &p_sys->audio );
 722         if( p_sys->p_aout_input == NULL )
 723         {
 724             msg_Err( p_dec, "failed to create audio output" );
 725             p_dec->b_error = VLC_TRUE;
 726             return NULL;
 727         }
 728         p_dec->fmt_out.audio.i_bytes_per_frame =
 729             p_sys->audio.i_bytes_per_frame;
 730     }
 731
 732     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 733                                   i_samples );
 734
 735     return p_buffer;
 736 }
 737
 738 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 739 {
 740     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 741                           p_dec->p_owner->p_aout_input, p_buffer );
 742 }
 743
 744 static picture_t *vout_new_buffer( decoder_t *p_dec )
 745 {
 746     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 747     picture_t *p_pic;
 748
 749     if( p_sys->p_vout == NULL ||
 750         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 751         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 752         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 753         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 754     {
 755         if( !p_dec->fmt_out.video.i_width ||
 756             !p_dec->fmt_out.video.i_height )
 757         {
 758             /* Can't create a new vout without display size */
 759             return NULL;
 760         }
 761
 762         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 763         p_sys->video = p_dec->fmt_out.video;
 764
 765         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 766                                       p_sys->video.i_width,
 767                                       p_sys->video.i_height,
 768                                       p_sys->video.i_chroma,
 769                                       p_sys->video.i_aspect );
 770
 771         if( p_sys->p_vout == NULL )
 772         {
 773             msg_Err( p_dec, "failed to create video output" );
 774             p_dec->b_error = VLC_TRUE;
 775             return NULL;
 776         }
 777     }
 778
 779     /* Get a new picture */
 780     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 781     {
 782         int i_pic, i_ready_pic = 0;
 783
 784         if( p_dec->b_die || p_dec->b_error )
 785         {
 786             return NULL;
 787         }
 788
 789 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 790         /* Check the decoder doesn't leak pictures */
 791         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 792              i_pic++ )
 793         {
 794             if( p_pic->i_status == READY_PICTURE )
 795             {
 796                 if( i_ready_pic++ > 0 ) break;
 797                 else continue;
 798             }
 799
 800             if( p_pic->i_status != DISPLAYED_PICTURE &&
 801                 p_pic->i_status != RESERVED_PICTURE &&
 802                 p_pic->i_status != READY_PICTURE ) break;
 803
 804             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
 805                 break;
 806         }
 807         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
 808         {
 809             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
 810
 811             /* Just free all the pictures */
 812             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 813                  i_pic++ )
 814             {
 815                 if( p_pic->i_status == RESERVED_PICTURE )
 816                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 817                 if( p_pic->i_refcount > 0 )
 818                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 819             }
 820         }
 821 #undef p_pic
 822
 823         msleep( VOUT_OUTMEM_SLEEP );
 824     }
 825
 826     return p_pic;
 827 }
 828
 829 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
 830 {
 831     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 832 }
 833
 834 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
 835 {
 836     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
 837 }
 838
 839 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
 840 {
 841     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 842 }