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         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 211
 212         if( p_dec->p_owner->p_input->b_out_pace_control )
 213         {
 214             /* FIXME !!!!! */
 215             while( !p_dec->b_die && !p_dec->b_error &&
 216                    p_dec->p_owner->p_fifo->i_depth > 10 )
 217             {
 218                 msleep( 1000 );
 219             }
 220         }
 221     }
 222     else
 223     {
 224         if( p_dec->b_error || p_block->i_buffer <= 0 )
 225         {
 226             block_Release( p_block );
 227         }
 228         else
 229         {
 230             DecoderDecode( p_dec, p_block );
 231         }
 232     }
 233 }
 234
 235 void input_DecoderDiscontinuity( decoder_t * p_dec )
 236 {
 237     block_t *p_null;
 238
 239     /* Empty the fifo */
 240     if( p_dec->p_owner->b_own_thread )
 241     {
 242         block_FifoEmpty( p_dec->p_owner->p_fifo );
 243     }
 244
 245     /* Send a special block */
 246     p_null = block_New( p_dec, 128 );
 247     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 248     memset( p_null->p_buffer, 0, p_null->i_buffer );
 249
 250     input_DecoderDecode( p_dec, p_null );
 251 }
 252
 253 #if 0
 254 /**
 255  * Create a NULL packet for padding in case of a data loss
 256  *
 257  * \param p_input the input thread
 258  * \param p_es es descriptor
 259  * \return nothing
 260  */
 261 static void input_NullPacket( input_thread_t * p_input,
 262                               es_descriptor_t * p_es )
 263 {
 264 #if 0
 265     block_t *p_block = block_New( p_input, PADDING_PACKET_SIZE );
 266     if( p_block )
 267     {
 268         memset( p_block->p_buffer, 0, PADDING_PACKET_SIZE );
 269         p_block->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 270
 271         block_FifoPut( p_es->p_dec->p_owner->p_fifo, p_block );
 272     }
 273 #endif
 274 }
 275
 276 /**
 277  * Send a NULL packet to the decoders
 278  *
 279  * \param p_input the input thread
 280  * \return nothing
 281  */
 282 void input_EscapeDiscontinuity( input_thread_t * p_input )
 283 {
 284 #if 0
 285     unsigned int i_es, i;
 286
 287     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 288     {
 289         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 290
 291         if( p_es->p_dec != NULL )
 292         {
 293             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 294             {
 295                 input_NullPacket( p_input, p_es );
 296             }
 297         }
 298     }
 299 #endif
 300 }
 301
 302 /**
 303  * Send a NULL packet to the audio decoders
 304  *
 305  * \param p_input the input thread
 306  * \return nothing
 307  */
 308 void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
 309 {
 310 #if 0
 311     unsigned int i_es, i;
 312
 313     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 314     {
 315         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 316
 317         if( p_es->p_dec != NULL && p_es->i_cat == AUDIO_ES )
 318         {
 319             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 320             {
 321                 input_NullPacket( p_input, p_es );
 322             }
 323         }
 324     }
 325 #endif
 326 }
 327 #endif
 328
 329 /**
 330  * Create a decoder object
 331  *
 332  * \param p_input the input thread
 333  * \param p_es the es descriptor
 334  * \param i_object_type Object type as define in include/vlc_objects.h
 335  * \return the decoder object
 336  */
 337 static decoder_t * CreateDecoder( input_thread_t *p_input,
 338                                   es_format_t *fmt, int i_object_type )
 339 {
 340     decoder_t *p_dec;
 341
 342     p_dec = vlc_object_create( p_input, i_object_type );
 343     if( p_dec == NULL )
 344     {
 345         msg_Err( p_input, "out of memory" );
 346         return NULL;
 347     }
 348
 349     p_dec->pf_decode_audio = 0;
 350     p_dec->pf_decode_video = 0;
 351     p_dec->pf_decode_sub = 0;
 352     p_dec->pf_packetize = 0;
 353
 354     /* Initialize the decoder fifo */
 355     p_dec->p_module = NULL;
 356
 357
 358     es_format_Copy( &p_dec->fmt_in, fmt );
 359     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 360
 361     /* Allocate our private structure for the decoder */
 362     p_dec->p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 363     if( p_dec->p_owner == NULL )
 364     {
 365         msg_Err( p_dec, "out of memory" );
 366         return NULL;
 367     }
 368     p_dec->p_owner->b_own_thread = VLC_TRUE;
 369     p_dec->p_owner->p_input = p_input;
 370     p_dec->p_owner->p_aout = NULL;
 371     p_dec->p_owner->p_aout_input = NULL;
 372     p_dec->p_owner->p_vout = NULL;
 373     p_dec->p_owner->p_sout = p_input->p_sout;
 374     p_dec->p_owner->p_sout_input = NULL;
 375     p_dec->p_owner->p_packetizer = NULL;
 376
 377
 378     /* decoder fifo */
 379     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 380     {
 381         msg_Err( p_dec, "out of memory" );
 382         return NULL;
 383     }
 384     /* Set buffers allocation callbacks for the decoders */
 385     p_dec->pf_aout_buffer_new = aout_new_buffer;
 386     p_dec->pf_aout_buffer_del = aout_del_buffer;
 387     p_dec->pf_vout_buffer_new = vout_new_buffer;
 388     p_dec->pf_vout_buffer_del = vout_del_buffer;
 389     p_dec->pf_picture_link    = vout_link_picture;
 390     p_dec->pf_picture_unlink  = vout_unlink_picture;
 391
 392     vlc_object_attach( p_dec, p_input );
 393
 394     /* Find a suitable decoder/packetizer module */
 395     if( i_object_type == VLC_OBJECT_DECODER )
 396         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 397     else
 398         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 399
 400     /* Check if decoder requires already packetized data */
 401     if( i_object_type == VLC_OBJECT_DECODER &&
 402         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 403     {
 404         p_dec->p_owner->p_packetizer =
 405             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 406         if( p_dec->p_owner->p_packetizer )
 407         {
 408             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 409                             &p_dec->fmt_in );
 410
 411             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 412                             &null_es_format );
 413
 414             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 415
 416             p_dec->p_owner->p_packetizer->p_module =
 417                 module_Need( p_dec->p_owner->p_packetizer,
 418                              "packetizer", "$packetizer", 0 );
 419
 420             if( !p_dec->p_owner->p_packetizer->p_module )
 421             {
 422                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 423                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 424                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 425             }
 426         }
 427     }
 428
 429     return p_dec;
 430 }
 431
 432 /**
 433  * The decoding main loop
 434  *
 435  * \param p_dec the decoder
 436  * \return 0
 437  */
 438 static int DecoderThread( decoder_t * p_dec )
 439 {
 440     block_t *p_block;
 441
 442     /* The decoder's main loop */
 443     while( !p_dec->b_die && !p_dec->b_error )
 444     {
 445         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 446         {
 447             p_dec->b_error = 1;
 448             break;
 449         }
 450         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 451         {
 452             break;
 453         }
 454     }
 455
 456     while( !p_dec->b_die )
 457     {
 458         /* Trash all received PES packets */
 459         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 460         if( p_block ) block_Release( p_block );
 461     }
 462
 463     /* We do it here because of the dll loader that wants close() in the
 464      * same thread than open()/decode() */
 465     module_Unneed( p_dec, p_dec->p_module );
 466
 467     return 0;
 468 }
 469
 470 /**
 471  * Decode a block
 472  *
 473  * \param p_dec the decoder object
 474  * \param p_block the block to decode
 475  * \return VLC_SUCCESS or an error code
 476  */
 477 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 478 {
 479     if( p_block->i_buffer <= 0 )
 480     {
 481         block_Release( p_block );
 482         return VLC_SUCCESS;
 483     }
 484
 485     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 486     {
 487         block_t *p_sout_block;
 488
 489         while( (p_sout_block = p_dec->pf_packetize( p_dec, &p_block )) )
 490         {
 491             if( !p_dec->p_owner->p_sout_input )
 492             {
 493                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 494
 495                 p_dec->p_owner->sout.i_group =p_dec->fmt_in.i_group;
 496                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 497                 if( p_dec->fmt_in.psz_language )
 498                 {
 499                     p_dec->p_owner->sout.psz_language =
 500                         strdup( p_dec->fmt_in.psz_language );
 501                 }
 502
 503                 p_dec->p_owner->p_sout_input =
 504                     sout_InputNew( p_dec->p_owner->p_sout,
 505                                    &p_dec->p_owner->sout );
 506
 507                 if( p_dec->p_owner->p_sout_input == NULL )
 508                 {
 509                     msg_Err( p_dec, "cannot create packetizer output" );
 510                     p_dec->b_error = VLC_TRUE;
 511
 512                     while( p_sout_block )
 513                     {
 514                         block_t *p_next = p_sout_block->p_next;
 515                         block_Release( p_sout_block );
 516                         p_sout_block = p_next;
 517                     }
 518                     break;
 519                 }
 520             }
 521
 522             while( p_sout_block )
 523             {
 524                 block_t       *p_next = p_sout_block->p_next;
 525
 526                 p_sout_block->p_next = NULL;
 527
 528                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 529                                       p_sout_block );
 530
 531                 p_sout_block = p_next;
 532             }
 533
 534             /* For now it's enough, as only sout inpact on this flag */
 535             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 536                 p_dec->p_owner->p_input->b_out_pace_control )
 537             {
 538                 msg_Dbg( p_dec, "switching to synch mode" );
 539                 p_dec->p_owner->p_input->b_out_pace_control = VLC_FALSE;
 540             }
 541             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 542                      !p_dec->p_owner->p_input->b_out_pace_control )
 543             {
 544                 msg_Dbg( p_dec, "switching to asynch mode" );
 545                 p_dec->p_owner->p_input->b_out_pace_control = VLC_TRUE;
 546             }
 547         }
 548     }
 549     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 550     {
 551         aout_buffer_t *p_aout_buf;
 552
 553         if( p_dec->p_owner->p_packetizer )
 554         {
 555             block_t *p_packetized_block;
 556             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 557
 558             while( (p_packetized_block =
 559                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 560             {
 561                 while( (p_aout_buf =
 562                         p_dec->pf_decode_audio( p_dec, &p_packetized_block )) )
 563                 {
 564                     aout_DecPlay( p_dec->p_owner->p_aout,
 565                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 566                 }
 567             }
 568         }
 569         else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 570         {
 571             aout_DecPlay( p_dec->p_owner->p_aout,
 572                           p_dec->p_owner->p_aout_input, p_aout_buf );
 573         }
 574     }
 575     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 576     {
 577         picture_t *p_pic;
 578
 579         if( p_dec->p_owner->p_packetizer )
 580         {
 581             block_t *p_packetized_block;
 582             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 583
 584             while( (p_packetized_block =
 585                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 586             {
 587                 while( (p_pic =
 588                         p_dec->pf_decode_video( p_dec, &p_packetized_block )) )
 589                 {
 590                     vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 591                                       p_pic->date );
 592                     vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 593                 }
 594             }
 595         }
 596         else while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 597         {
 598             vout_DatePicture( p_dec->p_owner->p_vout, p_pic, p_pic->date );
 599             vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 600         }
 601     }
 602     else if( p_dec->fmt_in.i_cat == SPU_ES )
 603     {
 604         p_dec->pf_decode_sub( p_dec, &p_block );
 605     }
 606     else
 607     {
 608         msg_Err( p_dec, "unknown ES format" );
 609         p_dec->b_error = 1;
 610     }
 611
 612     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 613 }
 614
 615 /**
 616  * Destroys a decoder object
 617  *
 618  * \param p_dec the decoder object
 619  * \return nothing
 620  */
 621 static void DeleteDecoder( decoder_t * p_dec )
 622 {
 623     vlc_object_detach( p_dec );
 624
 625     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 626              (char*)&p_dec->fmt_in.i_codec,
 627              p_dec->p_owner->p_fifo->i_depth );
 628
 629     /* Free all packets still in the decoder fifo. */
 630     block_FifoEmpty( p_dec->p_owner->p_fifo );
 631     block_FifoRelease( p_dec->p_owner->p_fifo );
 632
 633    /* Cleanup */
 634     if( p_dec->p_owner->p_aout_input )
 635         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 636
 637     if( p_dec->p_owner->p_vout )
 638     {
 639         int i_pic;
 640
 641 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 642         /* Hack to make sure all the the pictures are freed by the decoder */
 643         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 644              i_pic++ )
 645         {
 646             if( p_pic->i_status == RESERVED_PICTURE )
 647                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 648             if( p_pic->i_refcount > 0 )
 649                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 650         }
 651 #undef p_pic
 652
 653         /* We are about to die. Reattach video output to p_vlc. */
 654         vout_Request( p_dec, p_dec->p_owner->p_vout, 0, 0, 0, 0 );
 655     }
 656
 657     if( p_dec->p_owner->p_sout_input )
 658     {
 659         sout_InputDelete( p_dec->p_owner->p_sout_input );
 660         es_format_Clean( &p_dec->p_owner->sout );
 661     }
 662
 663     es_format_Clean( &p_dec->fmt_in );
 664     es_format_Clean( &p_dec->fmt_out );
 665
 666     if( p_dec->p_owner->p_packetizer )
 667     {
 668         module_Unneed( p_dec->p_owner->p_packetizer,
 669                        p_dec->p_owner->p_packetizer->p_module );
 670         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 671         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 672         vlc_object_detach( p_dec->p_owner->p_packetizer );
 673         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 674     }
 675
 676     free( p_dec->p_owner );
 677 }
 678
 679 /*****************************************************************************
 680  * Buffers allocation callbacks for the decoders
 681  *****************************************************************************/
 682 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 683 {
 684     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 685     aout_buffer_t *p_buffer;
 686
 687     if( p_sys->p_aout_input != NULL &&
 688         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 689           p_dec->fmt_out.audio.i_original_channels !=
 690               p_sys->audio.i_original_channels ||
 691           p_dec->fmt_out.audio.i_bytes_per_frame !=
 692               p_sys->audio.i_bytes_per_frame ) )
 693     {
 694         /* Parameters changed, restart the aout */
 695         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 696         p_sys->p_aout_input = NULL;
 697     }
 698
 699     if( p_sys->p_aout_input == NULL )
 700     {
 701         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 702         p_sys->audio = p_dec->fmt_out.audio;
 703         p_sys->p_aout_input =
 704             aout_DecNew( p_dec, &p_sys->p_aout, &p_sys->audio );
 705         if( p_sys->p_aout_input == NULL )
 706         {
 707             msg_Err( p_dec, "failed to create audio output" );
 708             p_dec->b_error = VLC_TRUE;
 709             return NULL;
 710         }
 711         p_dec->fmt_out.audio.i_bytes_per_frame =
 712             p_sys->audio.i_bytes_per_frame;
 713     }
 714
 715     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 716                                   i_samples );
 717
 718     return p_buffer;
 719 }
 720
 721 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 722 {
 723     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 724                           p_dec->p_owner->p_aout_input, p_buffer );
 725 }
 726
 727 static picture_t *vout_new_buffer( decoder_t *p_dec )
 728 {
 729     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 730     picture_t *p_pic;
 731
 732     if( p_sys->p_vout == NULL ||
 733         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 734         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 735         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 736         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 737     {
 738         if( !p_dec->fmt_out.video.i_width ||
 739             !p_dec->fmt_out.video.i_height )
 740         {
 741             /* Can't create a new vout without display size */
 742             return NULL;
 743         }
 744
 745         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 746         p_sys->video = p_dec->fmt_out.video;
 747
 748         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 749                                       p_sys->video.i_width,
 750                                       p_sys->video.i_height,
 751                                       p_sys->video.i_chroma,
 752                                       p_sys->video.i_aspect );
 753
 754         if( p_sys->p_vout == NULL )
 755         {
 756             msg_Err( p_dec, "failed to create video output" );
 757             p_dec->b_error = VLC_TRUE;
 758             return NULL;
 759         }
 760     }
 761
 762     /* Get a new picture */
 763     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 764     {
 765         int i_pic, i_ready_pic = 0;
 766
 767         if( p_dec->b_die || p_dec->b_error )
 768         {
 769             return NULL;
 770         }
 771
 772 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 773         /* Check the decoder doesn't leak pictures */
 774         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 775              i_pic++ )
 776         {
 777             if( p_pic->i_status == READY_PICTURE && i_ready_pic++ > 0 ) break;
 778
 779             if( p_pic->i_status != DISPLAYED_PICTURE &&
 780                 p_pic->i_status != RESERVED_PICTURE &&
 781                 p_pic->i_status != READY_PICTURE ) break;
 782
 783             if( !p_pic->i_refcount ) break;
 784         }
 785         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
 786         {
 787             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
 788
 789             /* Just free all the pictures */
 790             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 791                  i_pic++ )
 792             {
 793                 if( p_pic->i_status == RESERVED_PICTURE )
 794                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 795                 if( p_pic->i_refcount > 0 )
 796                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 797             }
 798         }
 799 #undef p_pic
 800
 801         msleep( VOUT_OUTMEM_SLEEP );
 802     }
 803
 804     return p_pic;
 805 }
 806
 807 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
 808 {
 809     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 810 }
 811
 812 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
 813 {
 814     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
 815 }
 816
 817 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
 818 {
 819     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 820 }