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) 1999-2001 VideoLAN
   5  * $Id: input_dec.c,v 1.82 2003/11/30 16:00:24 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 };
  82
  83
  84 /*****************************************************************************
  85  * input_RunDecoder: spawns a new decoder thread
  86  *****************************************************************************/
  87 decoder_t * input_RunDecoder( input_thread_t * p_input, es_descriptor_t * p_es )
  88 {
  89     decoder_t      *p_dec = NULL;
  90     vlc_value_t    val;
  91
  92     /* If we are in sout mode, search for packetizer module */
  93     var_Get( p_input, "sout", &val );
  94     if( !p_es->b_force_decoder && val.psz_string && *val.psz_string )
  95     {
  96         free( val.psz_string );
  97         val.b_bool = VLC_TRUE;
  98
  99         if( p_es->i_cat == AUDIO_ES )
 100         {
 101             var_Get( p_input, "sout-audio", &val );
 102         }
 103         else if( p_es->i_cat == VIDEO_ES )
 104         {
 105             var_Get( p_input, "sout-video", &val );
 106         }
 107
 108         if( val.b_bool )
 109         {
 110             /* Create the decoder configuration structure */
 111             p_dec = CreateDecoder( p_input, p_es, VLC_OBJECT_PACKETIZER );
 112             if( p_dec == NULL )
 113             {
 114                 msg_Err( p_input, "could not create packetizer" );
 115                 return NULL;
 116             }
 117
 118             p_dec->p_module =
 119                 module_Need( p_dec, "packetizer", "$packetizer" );
 120         }
 121     }
 122     else
 123     {
 124         /* Create the decoder configuration structure */
 125         p_dec = CreateDecoder( p_input, p_es, VLC_OBJECT_DECODER );
 126         if( p_dec == NULL )
 127         {
 128             msg_Err( p_input, "could not create decoder" );
 129             return NULL;
 130         }
 131
 132         /* default Get a suitable decoder module */
 133         p_dec->p_module = module_Need( p_dec, "decoder", "$codec" );
 134
 135         if( val.psz_string ) free( val.psz_string );
 136     }
 137
 138     if( !p_dec || !p_dec->p_module )
 139     {
 140         msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 141                  "VLC probably does not support this sound or video format.",
 142                  (char*)&p_dec->fmt_in.i_codec );
 143
 144         DeleteDecoder( p_dec );
 145         vlc_object_destroy( p_dec );
 146         return NULL;
 147     }
 148
 149     var_Get( p_input, "minimize-threads", &val );
 150     p_dec->p_owner->b_own_thread = val.b_bool ? VLC_FALSE : VLC_TRUE;
 151
 152     if( p_dec->p_owner->b_own_thread )
 153     {
 154         int i_priority;
 155         if ( p_es->i_cat == AUDIO_ES )
 156         {
 157             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 158         }
 159         else
 160         {
 161             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 162         }
 163
 164         /* Spawn the decoder thread */
 165         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 166                                i_priority, VLC_FALSE ) )
 167         {
 168             msg_Err( p_dec, "cannot spawn decoder thread \"%s\"",
 169                              p_dec->p_module->psz_object_name );
 170             module_Unneed( p_dec, p_dec->p_module );
 171             DeleteDecoder( p_dec );
 172             vlc_object_destroy( p_dec );
 173             return NULL;
 174         }
 175     }
 176
 177     p_input->stream.b_changed = 1;
 178
 179     return p_dec;
 180 }
 181
 182 /*****************************************************************************
 183  * input_EndDecoder: kills a decoder thread and waits until it's finished
 184  *****************************************************************************/
 185 void input_EndDecoder( input_thread_t * p_input, es_descriptor_t * p_es )
 186 {
 187     decoder_t *p_dec = p_es->p_dec;
 188     int i_dummy;
 189
 190     p_dec->b_die = VLC_TRUE;
 191
 192     if( p_dec->p_owner->b_own_thread )
 193     {
 194         /* Make sure the thread leaves the NextDataPacket() function by
 195          * sending it a few null packets. */
 196         for( i_dummy = 0; i_dummy < PADDING_PACKET_NUMBER; i_dummy++ )
 197         {
 198             input_NullPacket( p_input, p_es );
 199         }
 200
 201         if( p_es->p_pes != NULL )
 202         {
 203             input_DecodePES( p_es->p_dec, p_es->p_pes );
 204         }
 205
 206         /* Waiting for the thread to exit */
 207         /* I thought that unlocking was better since thread join can be long
 208          * but it actually creates late pictures and freezes --stef */
 209         /* vlc_mutex_unlock( &p_input->stream.stream_lock ); */
 210         vlc_thread_join( p_dec );
 211         /* vlc_mutex_lock( &p_input->stream.stream_lock ); */
 212 #if 0
 213         /* XXX We don't do it here because of dll loader that want close in the
 214          * same thread than open/decode */
 215         /* Unneed module */
 216         module_Unneed( p_dec, p_dec->p_module );
 217 #endif
 218     }
 219     else
 220     {
 221         module_Unneed( p_dec, p_dec->p_module );
 222     }
 223
 224     /* Delete decoder configuration */
 225     DeleteDecoder( p_dec );
 226
 227     /* Delete the decoder */
 228     vlc_object_destroy( p_dec );
 229
 230     /* Tell the input there is no more decoder */
 231     p_es->p_dec = NULL;
 232
 233     p_input->stream.b_changed = 1;
 234 }
 235
 236 /*****************************************************************************
 237  * input_DecodePES
 238  *****************************************************************************
 239  * Put a PES in the decoder's fifo.
 240  *****************************************************************************/
 241 void input_DecodePES( decoder_t * p_dec, pes_packet_t * p_pes )
 242 {
 243     data_packet_t *p_data;
 244     int     i_size = 0;
 245
 246     for( p_data = p_pes->p_first; p_data != NULL; p_data = p_data->p_next )
 247     {
 248         i_size += p_data->p_payload_end - p_data->p_payload_start;
 249     }
 250     if( i_size > 0 )
 251     {
 252         block_t *p_block = block_New( p_dec, i_size );
 253         if( p_block )
 254         {
 255             uint8_t *p_buffer = p_block->p_buffer;
 256
 257             for( p_data = p_pes->p_first; p_data != NULL; p_data = p_data->p_next )
 258             {
 259                 int i_copy = p_data->p_payload_end - p_data->p_payload_start;
 260
 261                 memcpy( p_buffer, p_data->p_payload_start, i_copy );
 262
 263                 p_buffer += i_copy;
 264             }
 265             p_block->i_pts = p_pes->i_pts;
 266             p_block->i_dts = p_pes->i_dts;
 267             p_block->b_discontinuity = p_pes->b_discontinuity;
 268
 269             input_DecodeBlock( p_dec, p_block );
 270         }
 271     }
 272
 273     input_DeletePES( p_dec->p_owner->p_method_data, p_pes );
 274 }
 275 /*****************************************************************************
 276  * input_DecodeBlock
 277  *****************************************************************************
 278  * Put a block_t in the decoder's fifo.
 279  *****************************************************************************/
 280 void input_DecodeBlock( decoder_t * p_dec, block_t *p_block )
 281 {
 282     if( p_dec->p_owner->b_own_thread )
 283     {
 284         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 285     }
 286     else
 287     {
 288         if( p_dec->b_error || p_block->i_buffer <= 0 )
 289         {
 290             block_Release( p_block );
 291         }
 292         else
 293         {
 294             DecoderDecode( p_dec, p_block );
 295         }
 296     }
 297 }
 298
 299 /*****************************************************************************
 300  * Create a NULL packet for padding in case of a data loss
 301  *****************************************************************************/
 302 static void input_NullPacket( input_thread_t * p_input,
 303                               es_descriptor_t * p_es )
 304 {
 305     block_t *p_block = block_New( p_input, PADDING_PACKET_SIZE );
 306
 307     if( p_block )
 308     {
 309         memset( p_block->p_buffer, 0, PADDING_PACKET_SIZE );
 310         p_block->b_discontinuity = 1;
 311
 312         block_FifoPut( p_es->p_dec->p_owner->p_fifo, p_block );
 313     }
 314 }
 315
 316 /*****************************************************************************
 317  * input_EscapeDiscontinuity: send a NULL packet to the decoders
 318  *****************************************************************************/
 319 void input_EscapeDiscontinuity( input_thread_t * p_input )
 320 {
 321     unsigned int i_es, i;
 322
 323     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 324     {
 325         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 326
 327         if( p_es->p_dec != NULL )
 328         {
 329             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 330             {
 331                 input_NullPacket( p_input, p_es );
 332             }
 333         }
 334     }
 335 }
 336
 337 /*****************************************************************************
 338  * input_EscapeAudioDiscontinuity: send a NULL packet to the audio decoders
 339  *****************************************************************************/
 340 void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
 341 {
 342     unsigned int i_es, i;
 343
 344     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 345     {
 346         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 347
 348         if( p_es->p_dec != NULL && p_es->i_cat == AUDIO_ES )
 349         {
 350             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 351             {
 352                 input_NullPacket( p_input, p_es );
 353             }
 354         }
 355     }
 356 }
 357
 358 /*****************************************************************************
 359  * CreateDecoder: create a decoder object
 360  *****************************************************************************/
 361 static decoder_t * CreateDecoder( input_thread_t * p_input,
 362                                   es_descriptor_t * p_es, int i_object_type )
 363 {
 364     decoder_t *p_dec;
 365
 366     p_dec = vlc_object_create( p_input, i_object_type );
 367     if( p_dec == NULL )
 368     {
 369         msg_Err( p_input, "out of memory" );
 370         return NULL;
 371     }
 372
 373     p_dec->pf_decode_audio = 0;
 374     p_dec->pf_decode_video = 0;
 375     p_dec->pf_decode_sub = 0;
 376     p_dec->pf_packetize = 0;
 377
 378     /* Select a new ES */
 379     INSERT_ELEM( p_input->stream.pp_selected_es,
 380                  p_input->stream.i_selected_es_number,
 381                  p_input->stream.i_selected_es_number,
 382                  p_es );
 383
 384     /* Initialize the decoder fifo */
 385     p_dec->p_module = NULL;
 386
 387     p_dec->fmt_in = p_es->fmt;
 388
 389     if( p_es->p_waveformatex )
 390     {
 391 #define p_wf ((WAVEFORMATEX *)p_es->p_waveformatex)
 392         p_dec->fmt_in.audio.i_channels = p_wf->nChannels;
 393         p_dec->fmt_in.audio.i_rate = p_wf->nSamplesPerSec;
 394         p_dec->fmt_in.i_bitrate = p_wf->nAvgBytesPerSec * 8;
 395         p_dec->fmt_in.audio.i_blockalign = p_wf->nBlockAlign;
 396         p_dec->fmt_in.audio.i_bitspersample = p_wf->wBitsPerSample;
 397         p_dec->fmt_in.i_extra = p_wf->cbSize;
 398         p_dec->fmt_in.p_extra = NULL;
 399         if( p_wf->cbSize )
 400         {
 401             p_dec->fmt_in.p_extra = malloc( p_wf->cbSize );
 402             memcpy( p_dec->fmt_in.p_extra, &p_wf[1], p_wf->cbSize );
 403         }
 404     }
 405
 406     if( p_es->p_bitmapinfoheader )
 407     {
 408 #define p_bih ((BITMAPINFOHEADER *) p_es->p_bitmapinfoheader)
 409         p_dec->fmt_in.i_extra = p_bih->biSize - sizeof(BITMAPINFOHEADER);
 410         p_dec->fmt_in.p_extra = NULL;
 411         if( p_dec->fmt_in.i_extra )
 412         {
 413             p_dec->fmt_in.p_extra = malloc( p_dec->fmt_in.i_extra );
 414             memcpy( p_dec->fmt_in.p_extra, &p_bih[1], p_dec->fmt_in.i_extra );
 415         }
 416
 417         p_dec->fmt_in.video.i_width = p_bih->biWidth;
 418         p_dec->fmt_in.video.i_height = p_bih->biHeight;
 419     }
 420
 421     /* FIXME
 422      *  - 1: beurk
 423      *  - 2: I'm not sure there isn't any endian problem here (spu)... */
 424     if( p_es->i_cat == SPU_ES && p_es->p_demux_data )
 425     {
 426         if( ( p_es->i_fourcc == VLC_FOURCC( 's', 'p', 'u', ' ' ) ||
 427               p_es->i_fourcc == VLC_FOURCC( 's', 'p', 'u', 'b' ) ) &&
 428             *((uint32_t*)p_es->p_demux_data) == 0xBeef )
 429         {
 430             memcpy( p_dec->fmt_in.subs.spu.palette,
 431                     p_es->p_demux_data, 17 * 4 );
 432         }
 433         else if( p_es->i_fourcc == VLC_FOURCC( 'd', 'v', 'b', 's' ) )
 434         {
 435             dvb_spuinfo_t *p_dvbs = (dvb_spuinfo_t*)p_es->p_demux_data;
 436
 437             p_dec->fmt_in.subs.dvb.i_id = p_dvbs->i_id;
 438         }
 439     }
 440
 441     p_dec->fmt_in.i_cat = p_es->i_cat;
 442     p_dec->fmt_in.i_codec = p_es->i_fourcc;
 443
 444     p_dec->fmt_out = null_es_format;
 445
 446     /* Allocate our private structure for the decoder */
 447     p_dec->p_owner = (decoder_owner_sys_t*)malloc(sizeof(decoder_owner_sys_t));
 448     if( p_dec->p_owner == NULL )
 449     {
 450         msg_Err( p_dec, "out of memory" );
 451         return NULL;
 452     }
 453     p_dec->p_owner->b_own_thread = VLC_TRUE;
 454     p_dec->p_owner->p_aout = NULL;
 455     p_dec->p_owner->p_aout_input = NULL;
 456     p_dec->p_owner->p_vout = NULL;
 457     p_dec->p_owner->p_sout = NULL;
 458     /* decoder fifo */
 459     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 460     {
 461         msg_Err( p_dec, "out of memory" );
 462         return NULL;
 463     }
 464     p_dec->p_owner->p_method_data = p_input->p_method_data;
 465
 466     /* Set buffers allocation callbacks for the decoders */
 467     p_dec->pf_aout_buffer_new = aout_new_buffer;
 468     p_dec->pf_aout_buffer_del = aout_del_buffer;
 469     p_dec->pf_vout_buffer_new = vout_new_buffer;
 470     p_dec->pf_vout_buffer_del = vout_del_buffer;
 471     p_dec->pf_picture_link    = vout_link_picture;
 472     p_dec->pf_picture_unlink  = vout_unlink_picture;
 473
 474     vlc_object_attach( p_dec, p_input );
 475
 476     return p_dec;
 477 }
 478
 479 /*****************************************************************************
 480  * DecoderThread: the decoding main loop
 481  *****************************************************************************/
 482 static int DecoderThread( decoder_t * p_dec )
 483 {
 484     block_t       *p_block;
 485
 486     /* The decoder's main loop */
 487     while( !p_dec->b_die && !p_dec->b_error )
 488     {
 489         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 490         {
 491             p_dec->b_error = 1;
 492             break;
 493         }
 494         if( p_block->i_buffer <= 0 )
 495         {
 496             block_Release( p_block );
 497             continue;
 498         }
 499         if( DecoderDecode( p_dec, p_block ) )
 500         {
 501             break;
 502         }
 503     }
 504
 505     while( !p_dec->b_die )
 506     {
 507         /* Trash all received PES packets */
 508         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 509         if( p_block )
 510         {
 511             block_Release( p_block );
 512         }
 513     }
 514
 515     /* XXX We do it here because of dll loader that want close in the
 516      * same thread than open/decode */
 517     /* Unneed module */
 518     module_Unneed( p_dec, p_dec->p_module );
 519
 520     return 0;
 521 }
 522
 523 /*****************************************************************************
 524  * DecoderDecode: decode a block
 525  *****************************************************************************/
 526 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 527 {
 528     if( p_block->i_buffer <= 0 )
 529     {
 530         block_Release( p_block );
 531         return VLC_SUCCESS;
 532     }
 533
 534     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 535     {
 536         block_t *p_sout_block;
 537
 538         while( (p_sout_block = p_dec->pf_packetize( p_dec, &p_block )) )
 539         {
 540             if( !p_dec->p_owner->p_sout )
 541             {
 542                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 543
 544                 p_dec->p_owner->p_sout =
 545                     sout_InputNew( p_dec, &p_dec->p_owner->sout );
 546
 547                 if( p_dec->p_owner->p_sout == NULL )
 548                 {
 549                     msg_Err( p_dec, "cannot create packetizer output" );
 550                     p_dec->b_error = VLC_TRUE;
 551
 552                     while( p_sout_block )
 553                     {
 554                         block_t       *p_next = p_sout_block->p_next;
 555                         block_Release( p_sout_block );
 556                         p_sout_block = p_next;
 557                     }
 558                     break;
 559                 }
 560             }
 561
 562             while( p_sout_block )
 563             {
 564                 block_t       *p_next = p_sout_block->p_next;
 565                 sout_buffer_t *p_sout_buffer;
 566
 567                 p_sout_buffer =
 568                     sout_BufferNew( p_dec->p_owner->p_sout->p_sout,
 569                                     p_sout_block->i_buffer );
 570                 if( p_sout_buffer == NULL )
 571                 {
 572                     msg_Err( p_dec, "cannot get sout buffer" );
 573                     break;
 574                 }
 575
 576                 memcpy( p_sout_buffer->p_buffer, p_sout_block->p_buffer,
 577                         p_sout_block->i_buffer );
 578
 579                 p_sout_buffer->i_pts = p_sout_block->i_pts;
 580                 p_sout_buffer->i_dts = p_sout_block->i_dts;
 581                 p_sout_buffer->i_length = p_sout_block->i_length;
 582
 583                 block_Release( p_sout_block );
 584
 585                 sout_InputSendBuffer( p_dec->p_owner->p_sout, p_sout_buffer );
 586
 587                 p_sout_block = p_next;
 588             }
 589         }
 590     }
 591     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 592     {
 593         aout_buffer_t *p_aout_buf;
 594
 595         while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 596         {
 597             aout_DecPlay( p_dec->p_owner->p_aout,
 598                           p_dec->p_owner->p_aout_input, p_aout_buf );
 599         }
 600     }
 601     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 602     {
 603         picture_t *p_pic;
 604
 605         while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 606         {
 607             vout_DatePicture( p_dec->p_owner->p_vout, p_pic, p_pic->date );
 608             vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 609         }
 610     }
 611     else if( p_dec->fmt_in.i_cat == SPU_ES )
 612     {
 613         p_dec->pf_decode_sub( p_dec, &p_block );
 614     }
 615     else
 616     {
 617         msg_Err( p_dec, "unknown ES format !!" );
 618         p_dec->b_error = 1;
 619     }
 620
 621     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 622 }
 623
 624 /*****************************************************************************
 625  * DeleteDecoder: destroys a decoder object
 626  *****************************************************************************/
 627 static void DeleteDecoder( decoder_t * p_dec )
 628 {
 629     vlc_object_detach( p_dec );
 630
 631     msg_Dbg( p_dec,
 632              "killing decoder fourcc `%4.4s', %d PES in FIFO",
 633              (char*)&p_dec->fmt_in.i_codec,
 634              p_dec->p_owner->p_fifo->i_depth );
 635
 636     /* Free all packets still in the decoder fifo. */
 637     block_FifoEmpty( p_dec->p_owner->p_fifo );
 638     block_FifoRelease( p_dec->p_owner->p_fifo );
 639
 640    /* Cleanup */
 641     if( p_dec->p_owner->p_aout_input )
 642         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 643
 644     if( p_dec->p_owner->p_vout )
 645     {
 646         int i_pic;
 647
 648 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 649         /* Hack to make sure all the the pictures are freed by the decoder */
 650         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 651              i_pic++ )
 652         {
 653             if( p_pic->i_status == RESERVED_PICTURE )
 654                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 655             if( p_pic->i_refcount > 0 )
 656                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 657         }
 658 #undef p_pic
 659
 660         /* We are about to die. Reattach video output to p_vlc. */
 661         vout_Request( p_dec, p_dec->p_owner->p_vout, 0, 0, 0, 0 );
 662     }
 663
 664     if( p_dec->p_owner->p_sout )
 665     {
 666         sout_InputDelete( p_dec->p_owner->p_sout );
 667         if( p_dec->p_owner->sout.i_extra ) free(p_dec->p_owner->sout.p_extra);
 668     }
 669
 670     if( p_dec->fmt_in.i_extra ) free( p_dec->fmt_in.p_extra );
 671     if( p_dec->fmt_out.i_extra ) free( p_dec->fmt_out.p_extra );
 672
 673     free( p_dec->p_owner );
 674 }
 675
 676 /*****************************************************************************
 677  * Buffers allocation callbacks for the decoders
 678  *****************************************************************************/
 679 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 680 {
 681     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 682     aout_buffer_t *p_buffer;
 683
 684     if( p_sys->p_aout_input != NULL &&
 685         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 686           p_dec->fmt_out.audio.i_original_channels !=
 687               p_sys->audio.i_original_channels ||
 688           p_dec->fmt_out.audio.i_bytes_per_frame !=
 689               p_sys->audio.i_bytes_per_frame ) )
 690     {
 691         /* Parameters changed, restart the aout */
 692         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 693         p_sys->p_aout_input = NULL;
 694     }
 695
 696     if( p_sys->p_aout_input == NULL )
 697     {
 698         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 699         p_sys->audio = p_dec->fmt_out.audio;
 700         p_sys->p_aout_input =
 701             aout_DecNew( p_dec, &p_sys->p_aout, &p_sys->audio );
 702         if( p_sys->p_aout_input == NULL )
 703         {
 704             msg_Err( p_dec, "failed to create audio output" );
 705             p_dec->b_error = VLC_TRUE;
 706             return NULL;
 707         }
 708         p_dec->fmt_out.audio.i_bytes_per_frame =
 709             p_sys->audio.i_bytes_per_frame;
 710     }
 711
 712     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 713                                   i_samples );
 714
 715     return p_buffer;
 716 }
 717
 718 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 719 {
 720     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 721                           p_dec->p_owner->p_aout_input, p_buffer );
 722 }
 723
 724 static picture_t *vout_new_buffer( decoder_t *p_dec )
 725 {
 726     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 727     picture_t *p_pic;
 728
 729     if( p_sys->p_vout == NULL ||
 730         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 731         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 732         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 733         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 734     {
 735         if( !p_dec->fmt_out.video.i_width ||
 736             !p_dec->fmt_out.video.i_height )
 737         {
 738             /* Can't create a new vout without display size */
 739             return NULL;
 740         }
 741
 742         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 743         p_sys->video = p_dec->fmt_out.video;
 744
 745         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 746                                       p_sys->video.i_width,
 747                                       p_sys->video.i_height,
 748                                       p_sys->video.i_chroma,
 749                                       p_sys->video.i_aspect );
 750
 751         if( p_sys->p_vout == NULL )
 752         {
 753             msg_Err( p_dec, "failed to create video output" );
 754             p_dec->b_error = VLC_TRUE;
 755             return NULL;
 756         }
 757     }
 758
 759     /* Get a new picture */
 760     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 761     {
 762         int i_pic;
 763
 764         if( p_dec->b_die || p_dec->b_error )
 765         {
 766             return NULL;
 767         }
 768
 769 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 770         /* Check the decoder doesn't leak pictures */
 771         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 772              i_pic++ )
 773         {
 774             if( p_pic->i_status != DISPLAYED_PICTURE &&
 775                 p_pic->i_status != RESERVED_PICTURE ) break;
 776
 777             if( !p_pic->i_refcount ) break;
 778         }
 779         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
 780         {
 781             msg_Err( p_dec, "decoder is leaking pictures, reseting the heap" );
 782
 783             /* Just free all the pictures */
 784             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 785                  i_pic++ )
 786             {
 787                 if( p_pic->i_status == RESERVED_PICTURE )
 788                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 789                 if( p_pic->i_refcount > 0 )
 790                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 791             }
 792         }
 793 #undef p_pic
 794
 795         msleep( VOUT_OUTMEM_SLEEP );
 796     }
 797
 798     return p_pic;
 799 }
 800
 801 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
 802 {
 803     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 804 }
 805
 806 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
 807 {
 808     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
 809 }
 810
 811 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
 812 {
 813     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 814 }