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 1.83 2003/12/24 09:46:08 gbazin 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             p_block->i_rate = p_pes->i_rate;
 269
 270             input_DecodeBlock( p_dec, p_block );
 271         }
 272     }
 273
 274     input_DeletePES( p_dec->p_owner->p_method_data, p_pes );
 275 }
 276 /*****************************************************************************
 277  * input_DecodeBlock
 278  *****************************************************************************
 279  * Put a block_t in the decoder's fifo.
 280  *****************************************************************************/
 281 void input_DecodeBlock( decoder_t * p_dec, block_t *p_block )
 282 {
 283     if( p_dec->p_owner->b_own_thread )
 284     {
 285         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 286     }
 287     else
 288     {
 289         if( p_dec->b_error || p_block->i_buffer <= 0 )
 290         {
 291             block_Release( p_block );
 292         }
 293         else
 294         {
 295             DecoderDecode( p_dec, p_block );
 296         }
 297     }
 298 }
 299
 300 /*****************************************************************************
 301  * Create a NULL packet for padding in case of a data loss
 302  *****************************************************************************/
 303 static void input_NullPacket( input_thread_t * p_input,
 304                               es_descriptor_t * p_es )
 305 {
 306     block_t *p_block = block_New( p_input, PADDING_PACKET_SIZE );
 307
 308     if( p_block )
 309     {
 310         memset( p_block->p_buffer, 0, PADDING_PACKET_SIZE );
 311         p_block->b_discontinuity = 1;
 312
 313         block_FifoPut( p_es->p_dec->p_owner->p_fifo, p_block );
 314     }
 315 }
 316
 317 /*****************************************************************************
 318  * input_EscapeDiscontinuity: send a NULL packet to the decoders
 319  *****************************************************************************/
 320 void input_EscapeDiscontinuity( input_thread_t * p_input )
 321 {
 322     unsigned int i_es, i;
 323
 324     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 325     {
 326         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 327
 328         if( p_es->p_dec != NULL )
 329         {
 330             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 331             {
 332                 input_NullPacket( p_input, p_es );
 333             }
 334         }
 335     }
 336 }
 337
 338 /*****************************************************************************
 339  * input_EscapeAudioDiscontinuity: send a NULL packet to the audio decoders
 340  *****************************************************************************/
 341 void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
 342 {
 343     unsigned int i_es, i;
 344
 345     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 346     {
 347         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 348
 349         if( p_es->p_dec != NULL && p_es->i_cat == AUDIO_ES )
 350         {
 351             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 352             {
 353                 input_NullPacket( p_input, p_es );
 354             }
 355         }
 356     }
 357 }
 358
 359 /*****************************************************************************
 360  * CreateDecoder: create a decoder object
 361  *****************************************************************************/
 362 static decoder_t * CreateDecoder( input_thread_t * p_input,
 363                                   es_descriptor_t * p_es, int i_object_type )
 364 {
 365     decoder_t *p_dec;
 366
 367     p_dec = vlc_object_create( p_input, i_object_type );
 368     if( p_dec == NULL )
 369     {
 370         msg_Err( p_input, "out of memory" );
 371         return NULL;
 372     }
 373
 374     p_dec->pf_decode_audio = 0;
 375     p_dec->pf_decode_video = 0;
 376     p_dec->pf_decode_sub = 0;
 377     p_dec->pf_packetize = 0;
 378
 379     /* Select a new ES */
 380     INSERT_ELEM( p_input->stream.pp_selected_es,
 381                  p_input->stream.i_selected_es_number,
 382                  p_input->stream.i_selected_es_number,
 383                  p_es );
 384
 385     /* Initialize the decoder fifo */
 386     p_dec->p_module = NULL;
 387
 388     p_dec->fmt_in = p_es->fmt;
 389
 390     if( p_es->p_waveformatex )
 391     {
 392 #define p_wf ((WAVEFORMATEX *)p_es->p_waveformatex)
 393         p_dec->fmt_in.audio.i_channels = p_wf->nChannels;
 394         p_dec->fmt_in.audio.i_rate = p_wf->nSamplesPerSec;
 395         p_dec->fmt_in.i_bitrate = p_wf->nAvgBytesPerSec * 8;
 396         p_dec->fmt_in.audio.i_blockalign = p_wf->nBlockAlign;
 397         p_dec->fmt_in.audio.i_bitspersample = p_wf->wBitsPerSample;
 398         p_dec->fmt_in.i_extra = p_wf->cbSize;
 399         p_dec->fmt_in.p_extra = NULL;
 400         if( p_wf->cbSize )
 401         {
 402             p_dec->fmt_in.p_extra = malloc( p_wf->cbSize );
 403             memcpy( p_dec->fmt_in.p_extra, &p_wf[1], p_wf->cbSize );
 404         }
 405     }
 406
 407     if( p_es->p_bitmapinfoheader )
 408     {
 409 #define p_bih ((BITMAPINFOHEADER *) p_es->p_bitmapinfoheader)
 410         p_dec->fmt_in.i_extra = p_bih->biSize - sizeof(BITMAPINFOHEADER);
 411         p_dec->fmt_in.p_extra = NULL;
 412         if( p_dec->fmt_in.i_extra )
 413         {
 414             p_dec->fmt_in.p_extra = malloc( p_dec->fmt_in.i_extra );
 415             memcpy( p_dec->fmt_in.p_extra, &p_bih[1], p_dec->fmt_in.i_extra );
 416         }
 417
 418         p_dec->fmt_in.video.i_width = p_bih->biWidth;
 419         p_dec->fmt_in.video.i_height = p_bih->biHeight;
 420     }
 421
 422     /* FIXME
 423      *  - 1: beurk
 424      *  - 2: I'm not sure there isn't any endian problem here (spu)... */
 425     if( p_es->i_cat == SPU_ES && p_es->p_demux_data )
 426     {
 427         if( ( p_es->i_fourcc == VLC_FOURCC( 's', 'p', 'u', ' ' ) ||
 428               p_es->i_fourcc == VLC_FOURCC( 's', 'p', 'u', 'b' ) ) &&
 429             *((uint32_t*)p_es->p_demux_data) == 0xBeef )
 430         {
 431             memcpy( p_dec->fmt_in.subs.spu.palette,
 432                     p_es->p_demux_data, 17 * 4 );
 433         }
 434         else if( p_es->i_fourcc == VLC_FOURCC( 'd', 'v', 'b', 's' ) )
 435         {
 436             dvb_spuinfo_t *p_dvbs = (dvb_spuinfo_t*)p_es->p_demux_data;
 437
 438             p_dec->fmt_in.subs.dvb.i_id = p_dvbs->i_id;
 439         }
 440     }
 441
 442     p_dec->fmt_in.i_cat = p_es->i_cat;
 443     p_dec->fmt_in.i_codec = p_es->i_fourcc;
 444
 445     p_dec->fmt_out = null_es_format;
 446
 447     /* Allocate our private structure for the decoder */
 448     p_dec->p_owner = (decoder_owner_sys_t*)malloc(sizeof(decoder_owner_sys_t));
 449     if( p_dec->p_owner == NULL )
 450     {
 451         msg_Err( p_dec, "out of memory" );
 452         return NULL;
 453     }
 454     p_dec->p_owner->b_own_thread = VLC_TRUE;
 455     p_dec->p_owner->p_aout = NULL;
 456     p_dec->p_owner->p_aout_input = NULL;
 457     p_dec->p_owner->p_vout = NULL;
 458     p_dec->p_owner->p_sout = NULL;
 459     /* decoder fifo */
 460     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 461     {
 462         msg_Err( p_dec, "out of memory" );
 463         return NULL;
 464     }
 465     p_dec->p_owner->p_method_data = p_input->p_method_data;
 466
 467     /* Set buffers allocation callbacks for the decoders */
 468     p_dec->pf_aout_buffer_new = aout_new_buffer;
 469     p_dec->pf_aout_buffer_del = aout_del_buffer;
 470     p_dec->pf_vout_buffer_new = vout_new_buffer;
 471     p_dec->pf_vout_buffer_del = vout_del_buffer;
 472     p_dec->pf_picture_link    = vout_link_picture;
 473     p_dec->pf_picture_unlink  = vout_unlink_picture;
 474
 475     vlc_object_attach( p_dec, p_input );
 476
 477     return p_dec;
 478 }
 479
 480 /*****************************************************************************
 481  * DecoderThread: the decoding main loop
 482  *****************************************************************************/
 483 static int DecoderThread( decoder_t * p_dec )
 484 {
 485     block_t       *p_block;
 486
 487     /* The decoder's main loop */
 488     while( !p_dec->b_die && !p_dec->b_error )
 489     {
 490         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 491         {
 492             p_dec->b_error = 1;
 493             break;
 494         }
 495         if( p_block->i_buffer <= 0 )
 496         {
 497             block_Release( p_block );
 498             continue;
 499         }
 500         if( DecoderDecode( p_dec, p_block ) )
 501         {
 502             break;
 503         }
 504     }
 505
 506     while( !p_dec->b_die )
 507     {
 508         /* Trash all received PES packets */
 509         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 510         if( p_block )
 511         {
 512             block_Release( p_block );
 513         }
 514     }
 515
 516     /* XXX We do it here because of dll loader that want close in the
 517      * same thread than open/decode */
 518     /* Unneed module */
 519     module_Unneed( p_dec, p_dec->p_module );
 520
 521     return 0;
 522 }
 523
 524 /*****************************************************************************
 525  * DecoderDecode: decode a block
 526  *****************************************************************************/
 527 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 528 {
 529     if( p_block->i_buffer <= 0 )
 530     {
 531         block_Release( p_block );
 532         return VLC_SUCCESS;
 533     }
 534
 535     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 536     {
 537         block_t *p_sout_block;
 538
 539         while( (p_sout_block = p_dec->pf_packetize( p_dec, &p_block )) )
 540         {
 541             if( !p_dec->p_owner->p_sout )
 542             {
 543                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 544
 545                 p_dec->p_owner->p_sout =
 546                     sout_InputNew( p_dec, &p_dec->p_owner->sout );
 547
 548                 if( p_dec->p_owner->p_sout == NULL )
 549                 {
 550                     msg_Err( p_dec, "cannot create packetizer output" );
 551                     p_dec->b_error = VLC_TRUE;
 552
 553                     while( p_sout_block )
 554                     {
 555                         block_t       *p_next = p_sout_block->p_next;
 556                         block_Release( p_sout_block );
 557                         p_sout_block = p_next;
 558                     }
 559                     break;
 560                 }
 561             }
 562
 563             while( p_sout_block )
 564             {
 565                 block_t       *p_next = p_sout_block->p_next;
 566                 sout_buffer_t *p_sout_buffer;
 567
 568                 p_sout_buffer =
 569                     sout_BufferNew( p_dec->p_owner->p_sout->p_sout,
 570                                     p_sout_block->i_buffer );
 571                 if( p_sout_buffer == NULL )
 572                 {
 573                     msg_Err( p_dec, "cannot get sout buffer" );
 574                     break;
 575                 }
 576
 577                 memcpy( p_sout_buffer->p_buffer, p_sout_block->p_buffer,
 578                         p_sout_block->i_buffer );
 579
 580                 p_sout_buffer->i_pts = p_sout_block->i_pts;
 581                 p_sout_buffer->i_dts = p_sout_block->i_dts;
 582                 p_sout_buffer->i_length = p_sout_block->i_length;
 583
 584                 block_Release( p_sout_block );
 585
 586                 sout_InputSendBuffer( p_dec->p_owner->p_sout, p_sout_buffer );
 587
 588                 p_sout_block = p_next;
 589             }
 590         }
 591     }
 592     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 593     {
 594         aout_buffer_t *p_aout_buf;
 595
 596         while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 597         {
 598             aout_DecPlay( p_dec->p_owner->p_aout,
 599                           p_dec->p_owner->p_aout_input, p_aout_buf );
 600         }
 601     }
 602     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 603     {
 604         picture_t *p_pic;
 605
 606         while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 607         {
 608             vout_DatePicture( p_dec->p_owner->p_vout, p_pic, p_pic->date );
 609             vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 610         }
 611     }
 612     else if( p_dec->fmt_in.i_cat == SPU_ES )
 613     {
 614         p_dec->pf_decode_sub( p_dec, &p_block );
 615     }
 616     else
 617     {
 618         msg_Err( p_dec, "unknown ES format !!" );
 619         p_dec->b_error = 1;
 620     }
 621
 622     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 623 }
 624
 625 /*****************************************************************************
 626  * DeleteDecoder: destroys a decoder object
 627  *****************************************************************************/
 628 static void DeleteDecoder( decoder_t * p_dec )
 629 {
 630     vlc_object_detach( p_dec );
 631
 632     msg_Dbg( p_dec,
 633              "killing decoder fourcc `%4.4s', %d PES in FIFO",
 634              (char*)&p_dec->fmt_in.i_codec,
 635              p_dec->p_owner->p_fifo->i_depth );
 636
 637     /* Free all packets still in the decoder fifo. */
 638     block_FifoEmpty( p_dec->p_owner->p_fifo );
 639     block_FifoRelease( p_dec->p_owner->p_fifo );
 640
 641    /* Cleanup */
 642     if( p_dec->p_owner->p_aout_input )
 643         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 644
 645     if( p_dec->p_owner->p_vout )
 646     {
 647         int i_pic;
 648
 649 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 650         /* Hack to make sure all the the pictures are freed by the decoder */
 651         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 652              i_pic++ )
 653         {
 654             if( p_pic->i_status == RESERVED_PICTURE )
 655                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 656             if( p_pic->i_refcount > 0 )
 657                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 658         }
 659 #undef p_pic
 660
 661         /* We are about to die. Reattach video output to p_vlc. */
 662         vout_Request( p_dec, p_dec->p_owner->p_vout, 0, 0, 0, 0 );
 663     }
 664
 665     if( p_dec->p_owner->p_sout )
 666     {
 667         sout_InputDelete( p_dec->p_owner->p_sout );
 668         if( p_dec->p_owner->sout.i_extra ) free(p_dec->p_owner->sout.p_extra);
 669     }
 670
 671     if( p_dec->fmt_in.i_extra ) free( p_dec->fmt_in.p_extra );
 672     if( p_dec->fmt_out.i_extra ) free( p_dec->fmt_out.p_extra );
 673
 674     free( p_dec->p_owner );
 675 }
 676
 677 /*****************************************************************************
 678  * Buffers allocation callbacks for the decoders
 679  *****************************************************************************/
 680 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 681 {
 682     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 683     aout_buffer_t *p_buffer;
 684
 685     if( p_sys->p_aout_input != NULL &&
 686         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 687           p_dec->fmt_out.audio.i_original_channels !=
 688               p_sys->audio.i_original_channels ||
 689           p_dec->fmt_out.audio.i_bytes_per_frame !=
 690               p_sys->audio.i_bytes_per_frame ) )
 691     {
 692         /* Parameters changed, restart the aout */
 693         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 694         p_sys->p_aout_input = NULL;
 695     }
 696
 697     if( p_sys->p_aout_input == NULL )
 698     {
 699         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 700         p_sys->audio = p_dec->fmt_out.audio;
 701         p_sys->p_aout_input =
 702             aout_DecNew( p_dec, &p_sys->p_aout, &p_sys->audio );
 703         if( p_sys->p_aout_input == NULL )
 704         {
 705             msg_Err( p_dec, "failed to create audio output" );
 706             p_dec->b_error = VLC_TRUE;
 707             return NULL;
 708         }
 709         p_dec->fmt_out.audio.i_bytes_per_frame =
 710             p_sys->audio.i_bytes_per_frame;
 711     }
 712
 713     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 714                                   i_samples );
 715
 716     return p_buffer;
 717 }
 718
 719 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 720 {
 721     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 722                           p_dec->p_owner->p_aout_input, p_buffer );
 723 }
 724
 725 static picture_t *vout_new_buffer( decoder_t *p_dec )
 726 {
 727     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 728     picture_t *p_pic;
 729
 730     if( p_sys->p_vout == NULL ||
 731         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 732         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 733         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 734         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 735     {
 736         if( !p_dec->fmt_out.video.i_width ||
 737             !p_dec->fmt_out.video.i_height )
 738         {
 739             /* Can't create a new vout without display size */
 740             return NULL;
 741         }
 742
 743         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 744         p_sys->video = p_dec->fmt_out.video;
 745
 746         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 747                                       p_sys->video.i_width,
 748                                       p_sys->video.i_height,
 749                                       p_sys->video.i_chroma,
 750                                       p_sys->video.i_aspect );
 751
 752         if( p_sys->p_vout == NULL )
 753         {
 754             msg_Err( p_dec, "failed to create video output" );
 755             p_dec->b_error = VLC_TRUE;
 756             return NULL;
 757         }
 758     }
 759
 760     /* Get a new picture */
 761     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 762     {
 763         int i_pic;
 764
 765         if( p_dec->b_die || p_dec->b_error )
 766         {
 767             return NULL;
 768         }
 769
 770 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 771         /* Check the decoder doesn't leak pictures */
 772         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 773              i_pic++ )
 774         {
 775             if( p_pic->i_status != DISPLAYED_PICTURE &&
 776                 p_pic->i_status != RESERVED_PICTURE ) break;
 777
 778             if( !p_pic->i_refcount ) break;
 779         }
 780         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
 781         {
 782             msg_Err( p_dec, "decoder is leaking pictures, reseting the heap" );
 783
 784             /* Just free all the pictures */
 785             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 786                  i_pic++ )
 787             {
 788                 if( p_pic->i_status == RESERVED_PICTURE )
 789                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 790                 if( p_pic->i_refcount > 0 )
 791                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 792             }
 793         }
 794 #undef p_pic
 795
 796         msleep( VOUT_OUTMEM_SLEEP );
 797     }
 798
 799     return p_pic;
 800 }
 801
 802 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
 803 {
 804     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 805 }
 806
 807 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
 808 {
 809     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
 810 }
 811
 812 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
 813 {
 814     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 815 }