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

   1 /*****************************************************************************
   2  * input_dec.c: Functions for the management of decoders
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 VideoLAN
   5  * $Id: input_dec.c,v 1.85 2004/01/18 05:14:39 fenrir Exp $
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@netcourrier.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdlib.h>
  29 #include <string.h>                                    /* memcpy(), memset() */
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/decoder.h>
  33 #include <vlc/vout.h>
  34
  35 #include "stream_output.h"
  36
  37 #include "input_ext-intf.h"
  38 #include "input_ext-plugins.h"
  39
  40 #include "codecs.h"
  41
  42 static void input_NullPacket( input_thread_t *, es_descriptor_t * );
  43
  44 static decoder_t * CreateDecoder( input_thread_t *, es_descriptor_t *, int );
  45 static int         DecoderThread( decoder_t * );
  46 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  47 static void        DeleteDecoder( decoder_t * );
  48
  49 /* Buffers allocation callbacks for the decoders */
  50 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  51 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  52
  53 static picture_t *vout_new_buffer( decoder_t * );
  54 static void vout_del_buffer( decoder_t *, picture_t * );
  55 static void vout_link_picture( decoder_t *, picture_t * );
  56 static void vout_unlink_picture( decoder_t *, picture_t * );
  57
  58 static es_format_t null_es_format = {0};
  59
  60 struct decoder_owner_sys_t
  61 {
  62     vlc_bool_t      b_own_thread;
  63
  64     aout_instance_t *p_aout;
  65     aout_input_t    *p_aout_input;
  66
  67     vout_thread_t   *p_vout;
  68
  69     sout_packetizer_input_t *p_sout;
  70
  71     /* Current format in use by the output */
  72     video_format_t video;
  73     audio_format_t audio;
  74     es_format_t    sout;
  75
  76     /* fifo */
  77     block_fifo_t *p_fifo;
  78
  79     /* */
  80     input_buffers_t *p_method_data;
  81     es_descriptor_t *p_es_descriptor;
  82 };
  83
  84
  85 /*****************************************************************************
  86  * input_RunDecoder: spawns a new decoder thread
  87  *****************************************************************************/
  88 decoder_t * input_RunDecoder( input_thread_t * p_input, es_descriptor_t * p_es )
  89 {
  90     decoder_t      *p_dec = NULL;
  91     vlc_value_t    val;
  92
  93     /* If we are in sout mode, search for packetizer module */
  94     var_Get( p_input, "sout", &val );
  95     if( !p_es->b_force_decoder && val.psz_string && *val.psz_string )
  96     {
  97         free( val.psz_string );
  98         val.b_bool = VLC_TRUE;
  99
 100         if( p_es->i_cat == AUDIO_ES )
 101         {
 102             var_Get( p_input, "sout-audio", &val );
 103         }
 104         else if( p_es->i_cat == VIDEO_ES )
 105         {
 106             var_Get( p_input, "sout-video", &val );
 107         }
 108
 109         if( val.b_bool )
 110         {
 111             /* Create the decoder configuration structure */
 112             p_dec = CreateDecoder( p_input, p_es, VLC_OBJECT_PACKETIZER );
 113             if( p_dec == NULL )
 114             {
 115                 msg_Err( p_input, "could not create packetizer" );
 116                 return NULL;
 117             }
 118
 119             p_dec->p_module =
 120                 module_Need( p_dec, "packetizer", "$packetizer" );
 121         }
 122     }
 123     else
 124     {
 125         /* Create the decoder configuration structure */
 126         p_dec = CreateDecoder( p_input, p_es, VLC_OBJECT_DECODER );
 127         if( p_dec == NULL )
 128         {
 129             msg_Err( p_input, "could not create decoder" );
 130             return NULL;
 131         }
 132
 133         /* default Get a suitable decoder module */
 134         p_dec->p_module = module_Need( p_dec, "decoder", "$codec" );
 135
 136         if( val.psz_string ) free( val.psz_string );
 137     }
 138
 139     if( !p_dec || !p_dec->p_module )
 140     {
 141         msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 142                  "VLC probably does not support this sound or video format.",
 143                  (char*)&p_dec->fmt_in.i_codec );
 144
 145         DeleteDecoder( p_dec );
 146         vlc_object_destroy( p_dec );
 147         return NULL;
 148     }
 149
 150     var_Get( p_input, "minimize-threads", &val );
 151     p_dec->p_owner->b_own_thread = val.b_bool ? VLC_FALSE : VLC_TRUE;
 152
 153     if( p_dec->p_owner->b_own_thread )
 154     {
 155         int i_priority;
 156         if ( p_es->i_cat == AUDIO_ES )
 157         {
 158             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 159         }
 160         else
 161         {
 162             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 163         }
 164
 165         /* Spawn the decoder thread */
 166         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 167                                i_priority, VLC_FALSE ) )
 168         {
 169             msg_Err( p_dec, "cannot spawn decoder thread \"%s\"",
 170                              p_dec->p_module->psz_object_name );
 171             module_Unneed( p_dec, p_dec->p_module );
 172             DeleteDecoder( p_dec );
 173             vlc_object_destroy( p_dec );
 174             return NULL;
 175         }
 176     }
 177
 178     p_input->stream.b_changed = 1;
 179
 180     return p_dec;
 181 }
 182
 183 /*****************************************************************************
 184  * input_EndDecoder: kills a decoder thread and waits until it's finished
 185  *****************************************************************************/
 186 void input_EndDecoder( input_thread_t * p_input, es_descriptor_t * p_es )
 187 {
 188     decoder_t *p_dec = p_es->p_dec;
 189     int i_dummy;
 190
 191     p_dec->b_die = VLC_TRUE;
 192
 193     if( p_dec->p_owner->b_own_thread )
 194     {
 195         /* Make sure the thread leaves the NextDataPacket() function by
 196          * sending it a few null packets. */
 197         for( i_dummy = 0; i_dummy < PADDING_PACKET_NUMBER; i_dummy++ )
 198         {
 199             input_NullPacket( p_input, p_es );
 200         }
 201
 202         if( p_es->p_pes != NULL )
 203         {
 204             input_DecodePES( p_es->p_dec, p_es->p_pes );
 205         }
 206
 207         /* Waiting for the thread to exit */
 208         /* I thought that unlocking was better since thread join can be long
 209          * but it actually creates late pictures and freezes --stef */
 210         /* vlc_mutex_unlock( &p_input->stream.stream_lock ); */
 211         vlc_thread_join( p_dec );
 212         /* vlc_mutex_lock( &p_input->stream.stream_lock ); */
 213 #if 0
 214         /* XXX We don't do it here because of dll loader that want close in the
 215          * same thread than open/decode */
 216         /* Unneed module */
 217         module_Unneed( p_dec, p_dec->p_module );
 218 #endif
 219     }
 220     else
 221     {
 222         module_Unneed( p_dec, p_dec->p_module );
 223     }
 224
 225     /* Delete decoder configuration */
 226     DeleteDecoder( p_dec );
 227
 228     /* Delete the decoder */
 229     vlc_object_destroy( p_dec );
 230
 231     /* Tell the input there is no more decoder */
 232     p_es->p_dec = NULL;
 233
 234     p_input->stream.b_changed = 1;
 235 }
 236
 237 /*****************************************************************************
 238  * input_DecodePES
 239  *****************************************************************************
 240  * Put a PES in the decoder's fifo.
 241  *****************************************************************************/
 242 void input_DecodePES( decoder_t * p_dec, pes_packet_t * p_pes )
 243 {
 244     data_packet_t *p_data;
 245     int     i_size = 0;
 246
 247     for( p_data = p_pes->p_first; p_data != NULL; p_data = p_data->p_next )
 248     {
 249         i_size += p_data->p_payload_end - p_data->p_payload_start;
 250     }
 251     if( i_size > 0 )
 252     {
 253         block_t *p_block = block_New( p_dec, i_size );
 254         if( p_block )
 255         {
 256             uint8_t *p_buffer = p_block->p_buffer;
 257
 258             for( p_data = p_pes->p_first; p_data != NULL; p_data = p_data->p_next )
 259             {
 260                 int i_copy = p_data->p_payload_end - p_data->p_payload_start;
 261
 262                 memcpy( p_buffer, p_data->p_payload_start, i_copy );
 263
 264                 p_buffer += i_copy;
 265             }
 266             p_block->i_pts = p_pes->i_pts;
 267             p_block->i_dts = p_pes->i_dts;
 268             p_block->b_discontinuity = p_pes->b_discontinuity;
 269             p_block->i_rate = p_pes->i_rate;
 270
 271             input_DecodeBlock( p_dec, p_block );
 272         }
 273     }
 274
 275     input_DeletePES( p_dec->p_owner->p_method_data, p_pes );
 276 }
 277 /*****************************************************************************
 278  * input_DecodeBlock
 279  *****************************************************************************
 280  * Put a block_t in the decoder's fifo.
 281  *****************************************************************************/
 282 void input_DecodeBlock( decoder_t * p_dec, block_t *p_block )
 283 {
 284     if( p_dec->p_owner->b_own_thread )
 285     {
 286         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 287     }
 288     else
 289     {
 290         if( p_dec->b_error || p_block->i_buffer <= 0 )
 291         {
 292             block_Release( p_block );
 293         }
 294         else
 295         {
 296             DecoderDecode( p_dec, p_block );
 297         }
 298     }
 299 }
 300
 301 /*****************************************************************************
 302  * Create a NULL packet for padding in case of a data loss
 303  *****************************************************************************/
 304 static void input_NullPacket( input_thread_t * p_input,
 305                               es_descriptor_t * p_es )
 306 {
 307     block_t *p_block = block_New( p_input, PADDING_PACKET_SIZE );
 308
 309     if( p_block )
 310     {
 311         memset( p_block->p_buffer, 0, PADDING_PACKET_SIZE );
 312         p_block->b_discontinuity = 1;
 313
 314         block_FifoPut( p_es->p_dec->p_owner->p_fifo, p_block );
 315     }
 316 }
 317
 318 /*****************************************************************************
 319  * input_EscapeDiscontinuity: send a NULL packet to the decoders
 320  *****************************************************************************/
 321 void input_EscapeDiscontinuity( input_thread_t * p_input )
 322 {
 323     unsigned int i_es, i;
 324
 325     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 326     {
 327         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 328
 329         if( p_es->p_dec != NULL )
 330         {
 331             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 332             {
 333                 input_NullPacket( p_input, p_es );
 334             }
 335         }
 336     }
 337 }
 338
 339 /*****************************************************************************
 340  * input_EscapeAudioDiscontinuity: send a NULL packet to the audio decoders
 341  *****************************************************************************/
 342 void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
 343 {
 344     unsigned int i_es, i;
 345
 346     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 347     {
 348         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 349
 350         if( p_es->p_dec != NULL && p_es->i_cat == AUDIO_ES )
 351         {
 352             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 353             {
 354                 input_NullPacket( p_input, p_es );
 355             }
 356         }
 357     }
 358 }
 359
 360 /*****************************************************************************
 361  * CreateDecoder: create a decoder object
 362  *****************************************************************************/
 363 static decoder_t * CreateDecoder( input_thread_t * p_input,
 364                                   es_descriptor_t * p_es, int i_object_type )
 365 {
 366     decoder_t *p_dec;
 367
 368     p_dec = vlc_object_create( p_input, i_object_type );
 369     if( p_dec == NULL )
 370     {
 371         msg_Err( p_input, "out of memory" );
 372         return NULL;
 373     }
 374
 375     p_dec->pf_decode_audio = 0;
 376     p_dec->pf_decode_video = 0;
 377     p_dec->pf_decode_sub = 0;
 378     p_dec->pf_packetize = 0;
 379
 380     /* Select a new ES */
 381     INSERT_ELEM( p_input->stream.pp_selected_es,
 382                  p_input->stream.i_selected_es_number,
 383                  p_input->stream.i_selected_es_number,
 384                  p_es );
 385
 386     /* Initialize the decoder fifo */
 387     p_dec->p_module = NULL;
 388
 389     p_dec->fmt_in = p_es->fmt;
 390
 391     if( p_es->p_waveformatex )
 392     {
 393 #define p_wf ((WAVEFORMATEX *)p_es->p_waveformatex)
 394         p_dec->fmt_in.audio.i_channels = p_wf->nChannels;
 395         p_dec->fmt_in.audio.i_rate = p_wf->nSamplesPerSec;
 396         p_dec->fmt_in.i_bitrate = p_wf->nAvgBytesPerSec * 8;
 397         p_dec->fmt_in.audio.i_blockalign = p_wf->nBlockAlign;
 398         p_dec->fmt_in.audio.i_bitspersample = p_wf->wBitsPerSample;
 399         p_dec->fmt_in.i_extra = p_wf->cbSize;
 400         p_dec->fmt_in.p_extra = NULL;
 401         if( p_wf->cbSize )
 402         {
 403             p_dec->fmt_in.p_extra = malloc( p_wf->cbSize );
 404             memcpy( p_dec->fmt_in.p_extra, &p_wf[1], p_wf->cbSize );
 405         }
 406     }
 407
 408     if( p_es->p_bitmapinfoheader )
 409     {
 410 #define p_bih ((BITMAPINFOHEADER *) p_es->p_bitmapinfoheader)
 411         p_dec->fmt_in.i_extra = p_bih->biSize - sizeof(BITMAPINFOHEADER);
 412         p_dec->fmt_in.p_extra = NULL;
 413         if( p_dec->fmt_in.i_extra )
 414         {
 415             p_dec->fmt_in.p_extra = malloc( p_dec->fmt_in.i_extra );
 416             memcpy( p_dec->fmt_in.p_extra, &p_bih[1], p_dec->fmt_in.i_extra );
 417         }
 418
 419         p_dec->fmt_in.video.i_width = p_bih->biWidth;
 420         p_dec->fmt_in.video.i_height = p_bih->biHeight;
 421     }
 422
 423     /* FIXME
 424      *  - 1: beurk
 425      *  - 2: I'm not sure there isn't any endian problem here (spu)... */
 426     if( p_es->i_cat == SPU_ES && p_es->p_demux_data )
 427     {
 428         if( ( p_es->i_fourcc == VLC_FOURCC( 's', 'p', 'u', ' ' ) ||
 429               p_es->i_fourcc == VLC_FOURCC( 's', 'p', 'u', 'b' ) ) &&
 430             *((uint32_t*)p_es->p_demux_data) == 0xBeef )
 431         {
 432             memcpy( p_dec->fmt_in.subs.spu.palette,
 433                     p_es->p_demux_data, 17 * 4 );
 434         }
 435         else if( p_es->i_fourcc == VLC_FOURCC( 'd', 'v', 'b', 's' ) )
 436         {
 437             dvb_spuinfo_t *p_dvbs = (dvb_spuinfo_t*)p_es->p_demux_data;
 438
 439             p_dec->fmt_in.subs.dvb.i_id = p_dvbs->i_id;
 440         }
 441     }
 442
 443     p_dec->fmt_in.i_cat = p_es->i_cat;
 444     p_dec->fmt_in.i_codec = p_es->i_fourcc;
 445
 446     p_dec->fmt_out = null_es_format;
 447
 448     /* Allocate our private structure for the decoder */
 449     p_dec->p_owner = (decoder_owner_sys_t*)malloc(sizeof(decoder_owner_sys_t));
 450     if( p_dec->p_owner == NULL )
 451     {
 452         msg_Err( p_dec, "out of memory" );
 453         return NULL;
 454     }
 455     p_dec->p_owner->b_own_thread = VLC_TRUE;
 456     p_dec->p_owner->p_aout = NULL;
 457     p_dec->p_owner->p_aout_input = NULL;
 458     p_dec->p_owner->p_vout = NULL;
 459     p_dec->p_owner->p_sout = NULL;
 460     p_dec->p_owner->p_es_descriptor = p_es;
 461     /* decoder fifo */
 462     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 463     {
 464         msg_Err( p_dec, "out of memory" );
 465         return NULL;
 466     }
 467     p_dec->p_owner->p_method_data = p_input->p_method_data;
 468
 469     /* Set buffers allocation callbacks for the decoders */
 470     p_dec->pf_aout_buffer_new = aout_new_buffer;
 471     p_dec->pf_aout_buffer_del = aout_del_buffer;
 472     p_dec->pf_vout_buffer_new = vout_new_buffer;
 473     p_dec->pf_vout_buffer_del = vout_del_buffer;
 474     p_dec->pf_picture_link    = vout_link_picture;
 475     p_dec->pf_picture_unlink  = vout_unlink_picture;
 476
 477     vlc_object_attach( p_dec, p_input );
 478
 479     return p_dec;
 480 }
 481
 482 /*****************************************************************************
 483  * DecoderThread: the decoding main loop
 484  *****************************************************************************/
 485 static int DecoderThread( decoder_t * p_dec )
 486 {
 487     block_t       *p_block;
 488
 489     /* The decoder's main loop */
 490     while( !p_dec->b_die && !p_dec->b_error )
 491     {
 492         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 493         {
 494             p_dec->b_error = 1;
 495             break;
 496         }
 497         if( p_block->i_buffer <= 0 )
 498         {
 499             block_Release( p_block );
 500             continue;
 501         }
 502         if( DecoderDecode( p_dec, p_block ) )
 503         {
 504             break;
 505         }
 506     }
 507
 508     while( !p_dec->b_die )
 509     {
 510         /* Trash all received PES packets */
 511         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 512         if( p_block )
 513         {
 514             block_Release( p_block );
 515         }
 516     }
 517
 518     /* XXX We do it here because of dll loader that want close in the
 519      * same thread than open/decode */
 520     /* Unneed module */
 521     module_Unneed( p_dec, p_dec->p_module );
 522
 523     return 0;
 524 }
 525
 526 /*****************************************************************************
 527  * DecoderDecode: decode a block
 528  *****************************************************************************/
 529 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 530 {
 531     if( p_block->i_buffer <= 0 )
 532     {
 533         block_Release( p_block );
 534         return VLC_SUCCESS;
 535     }
 536
 537     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 538     {
 539         block_t *p_sout_block;
 540
 541         while( (p_sout_block = p_dec->pf_packetize( p_dec, &p_block )) )
 542         {
 543             if( !p_dec->p_owner->p_sout )
 544             {
 545                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 546                 if( p_dec->p_owner->p_es_descriptor->p_pgrm )
 547                 {
 548                     p_dec->p_owner->sout.i_group =
 549                         p_dec->p_owner->p_es_descriptor->p_pgrm->i_number;
 550                 }
 551
 552                 p_dec->p_owner->p_sout =
 553                     sout_InputNew( p_dec, &p_dec->p_owner->sout );
 554
 555                 if( p_dec->p_owner->p_sout == NULL )
 556                 {
 557                     msg_Err( p_dec, "cannot create packetizer output" );
 558                     p_dec->b_error = VLC_TRUE;
 559
 560                     while( p_sout_block )
 561                     {
 562                         block_t       *p_next = p_sout_block->p_next;
 563                         block_Release( p_sout_block );
 564                         p_sout_block = p_next;
 565                     }
 566                     break;
 567                 }
 568             }
 569
 570             while( p_sout_block )
 571             {
 572                 block_t       *p_next = p_sout_block->p_next;
 573                 sout_buffer_t *p_sout_buffer;
 574
 575                 p_sout_buffer =
 576                     sout_BufferNew( p_dec->p_owner->p_sout->p_sout,
 577                                     p_sout_block->i_buffer );
 578                 if( p_sout_buffer == NULL )
 579                 {
 580                     msg_Err( p_dec, "cannot get sout buffer" );
 581                     break;
 582                 }
 583
 584                 memcpy( p_sout_buffer->p_buffer, p_sout_block->p_buffer,
 585                         p_sout_block->i_buffer );
 586
 587                 p_sout_buffer->i_pts = p_sout_block->i_pts;
 588                 p_sout_buffer->i_dts = p_sout_block->i_dts;
 589                 p_sout_buffer->i_length = p_sout_block->i_length;
 590
 591                 block_Release( p_sout_block );
 592
 593                 sout_InputSendBuffer( p_dec->p_owner->p_sout, p_sout_buffer );
 594
 595                 p_sout_block = p_next;
 596             }
 597         }
 598     }
 599     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 600     {
 601         aout_buffer_t *p_aout_buf;
 602
 603         while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 604         {
 605             aout_DecPlay( p_dec->p_owner->p_aout,
 606                           p_dec->p_owner->p_aout_input, p_aout_buf );
 607         }
 608     }
 609     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 610     {
 611         picture_t *p_pic;
 612
 613         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  * DeleteDecoder: destroys a decoder object
 634  *****************************************************************************/
 635 static void DeleteDecoder( decoder_t * p_dec )
 636 {
 637     vlc_object_detach( p_dec );
 638
 639     msg_Dbg( p_dec,
 640              "killing decoder fourcc `%4.4s', %d PES in FIFO",
 641              (char*)&p_dec->fmt_in.i_codec,
 642              p_dec->p_owner->p_fifo->i_depth );
 643
 644     /* Free all packets still in the decoder fifo. */
 645     block_FifoEmpty( p_dec->p_owner->p_fifo );
 646     block_FifoRelease( p_dec->p_owner->p_fifo );
 647
 648    /* Cleanup */
 649     if( p_dec->p_owner->p_aout_input )
 650         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 651
 652     if( p_dec->p_owner->p_vout )
 653     {
 654         int i_pic;
 655
 656 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 657         /* Hack to make sure all the the pictures are freed by the decoder */
 658         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 659              i_pic++ )
 660         {
 661             if( p_pic->i_status == RESERVED_PICTURE )
 662                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 663             if( p_pic->i_refcount > 0 )
 664                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 665         }
 666 #undef p_pic
 667
 668         /* We are about to die. Reattach video output to p_vlc. */
 669         vout_Request( p_dec, p_dec->p_owner->p_vout, 0, 0, 0, 0 );
 670     }
 671
 672     if( p_dec->p_owner->p_sout )
 673     {
 674         sout_InputDelete( p_dec->p_owner->p_sout );
 675         if( p_dec->p_owner->sout.i_extra ) free(p_dec->p_owner->sout.p_extra);
 676     }
 677
 678     if( p_dec->fmt_in.i_extra ) free( p_dec->fmt_in.p_extra );
 679     if( p_dec->fmt_out.i_extra ) free( p_dec->fmt_out.p_extra );
 680
 681     free( p_dec->p_owner );
 682 }
 683
 684 /*****************************************************************************
 685  * Buffers allocation callbacks for the decoders
 686  *****************************************************************************/
 687 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 688 {
 689     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 690     aout_buffer_t *p_buffer;
 691
 692     if( p_sys->p_aout_input != NULL &&
 693         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 694           p_dec->fmt_out.audio.i_original_channels !=
 695               p_sys->audio.i_original_channels ||
 696           p_dec->fmt_out.audio.i_bytes_per_frame !=
 697               p_sys->audio.i_bytes_per_frame ) )
 698     {
 699         /* Parameters changed, restart the aout */
 700         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 701         p_sys->p_aout_input = NULL;
 702     }
 703
 704     if( p_sys->p_aout_input == NULL )
 705     {
 706         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 707         p_sys->audio = p_dec->fmt_out.audio;
 708         p_sys->p_aout_input =
 709             aout_DecNew( p_dec, &p_sys->p_aout, &p_sys->audio );
 710         if( p_sys->p_aout_input == NULL )
 711         {
 712             msg_Err( p_dec, "failed to create audio output" );
 713             p_dec->b_error = VLC_TRUE;
 714             return NULL;
 715         }
 716         p_dec->fmt_out.audio.i_bytes_per_frame =
 717             p_sys->audio.i_bytes_per_frame;
 718     }
 719
 720     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 721                                   i_samples );
 722
 723     return p_buffer;
 724 }
 725
 726 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 727 {
 728     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 729                           p_dec->p_owner->p_aout_input, p_buffer );
 730 }
 731
 732 static picture_t *vout_new_buffer( decoder_t *p_dec )
 733 {
 734     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 735     picture_t *p_pic;
 736
 737     if( p_sys->p_vout == NULL ||
 738         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 739         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 740         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 741         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 742     {
 743         if( !p_dec->fmt_out.video.i_width ||
 744             !p_dec->fmt_out.video.i_height )
 745         {
 746             /* Can't create a new vout without display size */
 747             return NULL;
 748         }
 749
 750         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 751         p_sys->video = p_dec->fmt_out.video;
 752
 753         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 754                                       p_sys->video.i_width,
 755                                       p_sys->video.i_height,
 756                                       p_sys->video.i_chroma,
 757                                       p_sys->video.i_aspect );
 758
 759         if( p_sys->p_vout == NULL )
 760         {
 761             msg_Err( p_dec, "failed to create video output" );
 762             p_dec->b_error = VLC_TRUE;
 763             return NULL;
 764         }
 765     }
 766
 767     /* Get a new picture */
 768     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 769     {
 770         int i_pic;
 771
 772         if( p_dec->b_die || p_dec->b_error )
 773         {
 774             return NULL;
 775         }
 776
 777 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 778         /* Check the decoder doesn't leak pictures */
 779         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 780              i_pic++ )
 781         {
 782             if( p_pic->i_status != DISPLAYED_PICTURE &&
 783                 p_pic->i_status != RESERVED_PICTURE ) break;
 784
 785             if( !p_pic->i_refcount ) break;
 786         }
 787         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
 788         {
 789             msg_Err( p_dec, "decoder is leaking pictures, reseting the heap" );
 790
 791             /* Just free all the pictures */
 792             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 793                  i_pic++ )
 794             {
 795                 if( p_pic->i_status == RESERVED_PICTURE )
 796                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 797                 if( p_pic->i_refcount > 0 )
 798                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 799             }
 800         }
 801 #undef p_pic
 802
 803         msleep( VOUT_OUTMEM_SLEEP );
 804     }
 805
 806     return p_pic;
 807 }
 808
 809 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
 810 {
 811     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 812 }
 813
 814 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
 815 {
 816     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
 817 }
 818
 819 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
 820 {
 821     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 822 }