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 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include <vlc/vlc.h>
  30
  31 #include <vlc_block.h>
  32 #include <vlc_vout.h>
  33 #include <vlc_aout.h>
  34 #include <vlc_sout.h>
  35 #include <vlc_codec.h>
  36 #include <vlc_osd.h>
  37
  38 #include <vlc_interface.h>
  39 #include "audio_output/aout_internal.h"
  40 #include "stream_output/stream_output.h"
  41 #include "input_internal.h"
  42
  43 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
  44 static void        DeleteDecoder( decoder_t * );
  45
  46 static int         DecoderThread( decoder_t * );
  47 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  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 subpicture_t *spu_new_buffer( decoder_t * );
  59 static void spu_del_buffer( decoder_t *, subpicture_t * );
  60
  61 static es_format_t null_es_format;
  62
  63 struct decoder_owner_sys_t
  64 {
  65     vlc_bool_t      b_own_thread;
  66
  67     int64_t         i_preroll_end;
  68
  69     input_thread_t  *p_input;
  70
  71     aout_instance_t *p_aout;
  72     aout_input_t    *p_aout_input;
  73
  74     vout_thread_t   *p_vout;
  75
  76     vout_thread_t   *p_spu_vout;
  77     int              i_spu_channel;
  78
  79     sout_instance_t         *p_sout;
  80     sout_packetizer_input_t *p_sout_input;
  81
  82     /* Some decoders require already packetized data (ie. not truncated) */
  83     decoder_t *p_packetizer;
  84
  85     /* Current format in use by the output */
  86     video_format_t video;
  87     audio_format_t audio;
  88     es_format_t    sout;
  89
  90     /* fifo */
  91     block_fifo_t *p_fifo;
  92 };
  93
  94 /* decoder_GetInputAttachment:
  95  */
  96 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
  97                                                 const char *psz_name )
  98 {
  99     input_attachment_t *p_attachment;
 100     if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
 101         return NULL;
 102     return p_attachment;
 103 }
 104 /* decoder_GetInputAttachments:
 105  */
 106 int decoder_GetInputAttachments( decoder_t *p_dec,
 107                                  input_attachment_t ***ppp_attachment,
 108                                  int *pi_attachment )
 109 {
 110     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 111                           ppp_attachment, pi_attachment );
 112 }
 113
 114 /**
 115  * Spawns a new decoder thread
 116  *
 117  * \param p_input the input thread
 118  * \param p_es the es descriptor
 119  * \return the spawned decoder object
 120  */
 121 decoder_t *input_DecoderNew( input_thread_t *p_input,
 122                              es_format_t *fmt, vlc_bool_t b_force_decoder )
 123 {
 124     decoder_t   *p_dec = NULL;
 125     vlc_value_t val;
 126
 127     /* If we are in sout mode, search for packetizer module */
 128     if( p_input->p->p_sout && !b_force_decoder )
 129     {
 130         /* Create the decoder configuration structure */
 131         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
 132         if( p_dec == NULL )
 133         {
 134             msg_Err( p_input, "could not create packetizer" );
 135             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 136                             _("VLC could not open the packetizer module.") );
 137             return NULL;
 138         }
 139     }
 140     else
 141     {
 142         /* Create the decoder configuration structure */
 143         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
 144         if( p_dec == NULL )
 145         {
 146             msg_Err( p_input, "could not create decoder" );
 147             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 148                             _("VLC could not open the decoder module.") );
 149             return NULL;
 150         }
 151     }
 152
 153     if( !p_dec->p_module )
 154     {
 155         msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 156                  "VLC probably does not support this sound or video format.",
 157                  (char*)&p_dec->fmt_in.i_codec );
 158         intf_UserFatal( p_dec, VLC_FALSE, _("No suitable decoder module "
 159             "for format"), _("VLC probably does not support the \"%4.4s\" "
 160             "audio or video format. Unfortunately there is no way for you "
 161             "to fix this."), (char*)&p_dec->fmt_in.i_codec );
 162
 163         DeleteDecoder( p_dec );
 164         vlc_object_destroy( p_dec );
 165         return NULL;
 166     }
 167
 168     if( p_input->p->p_sout && p_input->p->input.b_can_pace_control &&
 169         !b_force_decoder )
 170     {
 171         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 172         p_dec->p_owner->b_own_thread = VLC_FALSE;
 173     }
 174     else
 175     {
 176         var_Get( p_input, "minimize-threads", &val );
 177         p_dec->p_owner->b_own_thread = !val.b_bool;
 178     }
 179
 180     if( p_dec->p_owner->b_own_thread )
 181     {
 182         int i_priority;
 183         if( fmt->i_cat == AUDIO_ES )
 184             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 185         else
 186             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 187
 188         /* Spawn the decoder thread */
 189         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 190                                i_priority, VLC_FALSE ) )
 191         {
 192             msg_Err( p_dec, "cannot spawn decoder thread" );
 193             module_Unneed( p_dec, p_dec->p_module );
 194             DeleteDecoder( p_dec );
 195             vlc_object_destroy( p_dec );
 196             return NULL;
 197         }
 198     }
 199
 200     return p_dec;
 201 }
 202
 203 /**
 204  * Kills a decoder thread and waits until it's finished
 205  *
 206  * \param p_input the input thread
 207  * \param p_es the es descriptor
 208  * \return nothing
 209  */
 210 void input_DecoderDelete( decoder_t *p_dec )
 211 {
 212     vlc_object_kill( p_dec );
 213
 214     if( p_dec->p_owner->b_own_thread )
 215     {
 216         /* Make sure the thread leaves the function by
 217          * sending it an empty block. */
 218         block_t *p_block = block_New( p_dec, 0 );
 219         input_DecoderDecode( p_dec, p_block );
 220
 221         vlc_thread_join( p_dec );
 222
 223         /* Don't module_Unneed() here because of the dll loader that wants
 224          * close() in the same thread than open()/decode() */
 225     }
 226     else
 227     {
 228         /* Flush */
 229         input_DecoderDecode( p_dec, NULL );
 230
 231         module_Unneed( p_dec, p_dec->p_module );
 232     }
 233
 234     /* Delete decoder configuration */
 235     DeleteDecoder( p_dec );
 236
 237     /* Delete the decoder */
 238     vlc_object_destroy( p_dec );
 239 }
 240
 241 /**
 242  * Put a block_t in the decoder's fifo.
 243  *
 244  * \param p_dec the decoder object
 245  * \param p_block the data block
 246  */
 247 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 248 {
 249     if( p_dec->p_owner->b_own_thread )
 250     {
 251         if( p_dec->p_owner->p_input->p->b_out_pace_control )
 252         {
 253             /* FIXME !!!!! */
 254             while( !p_dec->b_die && !p_dec->b_error &&
 255                    p_dec->p_owner->p_fifo->i_depth > 10 )
 256             {
 257                 msleep( 1000 );
 258             }
 259         }
 260         else if( p_dec->p_owner->p_fifo->i_size > 50000000 /* 50 MB */ )
 261         {
 262             /* FIXME: ideally we would check the time amount of data
 263              * in the fifo instead of its size. */
 264             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 265                       "consumed quickly enough), resetting fifo!" );
 266             block_FifoEmpty( p_dec->p_owner->p_fifo );
 267         }
 268
 269         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 270     }
 271     else
 272     {
 273         if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
 274         {
 275             if( p_block ) block_Release( p_block );
 276         }
 277         else
 278         {
 279             DecoderDecode( p_dec, p_block );
 280         }
 281     }
 282 }
 283
 284 void input_DecoderDiscontinuity( decoder_t * p_dec, vlc_bool_t b_flush )
 285 {
 286     block_t *p_null;
 287
 288     /* Empty the fifo */
 289     if( p_dec->p_owner->b_own_thread && b_flush )
 290         block_FifoEmpty( p_dec->p_owner->p_fifo );
 291
 292     /* Send a special block */
 293     p_null = block_New( p_dec, 128 );
 294     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 295     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 296     if( p_dec->p_owner->p_packetizer && b_flush )
 297         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 298     memset( p_null->p_buffer, 0, p_null->i_buffer );
 299
 300     input_DecoderDecode( p_dec, p_null );
 301 }
 302
 303 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
 304 {
 305     if( p_dec->p_owner->b_own_thread && p_dec->p_owner->p_fifo->i_depth > 0 )
 306     {
 307         return VLC_FALSE;
 308     }
 309     return VLC_TRUE;
 310 }
 311
 312 /**
 313  * Create a decoder object
 314  *
 315  * \param p_input the input thread
 316  * \param p_es the es descriptor
 317  * \param i_object_type Object type as define in include/vlc_objects.h
 318  * \return the decoder object
 319  */
 320 static decoder_t * CreateDecoder( input_thread_t *p_input,
 321                                   es_format_t *fmt, int i_object_type )
 322 {
 323     decoder_t *p_dec;
 324
 325     p_dec = vlc_object_create( p_input, i_object_type );
 326     if( p_dec == NULL )
 327     {
 328         msg_Err( p_input, "out of memory" );
 329         return NULL;
 330     }
 331
 332     p_dec->pf_decode_audio = 0;
 333     p_dec->pf_decode_video = 0;
 334     p_dec->pf_decode_sub = 0;
 335     p_dec->pf_packetize = 0;
 336
 337    /* Initialize the decoder fifo */
 338     p_dec->p_module = NULL;
 339
 340     memset( &null_es_format, 0, sizeof(es_format_t) );
 341     es_format_Copy( &p_dec->fmt_in, fmt );
 342     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 343
 344     /* Allocate our private structure for the decoder */
 345     p_dec->p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 346     if( p_dec->p_owner == NULL )
 347     {
 348         msg_Err( p_dec, "out of memory" );
 349         return NULL;
 350     }
 351     p_dec->p_owner->b_own_thread = VLC_TRUE;
 352     p_dec->p_owner->i_preroll_end = -1;
 353     p_dec->p_owner->p_input = p_input;
 354     p_dec->p_owner->p_aout = NULL;
 355     p_dec->p_owner->p_aout_input = NULL;
 356     p_dec->p_owner->p_vout = NULL;
 357     p_dec->p_owner->p_spu_vout = NULL;
 358     p_dec->p_owner->i_spu_channel = 0;
 359     p_dec->p_owner->p_sout = p_input->p->p_sout;
 360     p_dec->p_owner->p_sout_input = NULL;
 361     p_dec->p_owner->p_packetizer = NULL;
 362
 363     /* decoder fifo */
 364     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 365     {
 366         msg_Err( p_dec, "out of memory" );
 367         return NULL;
 368     }
 369
 370     /* Set buffers allocation callbacks for the decoders */
 371     p_dec->pf_aout_buffer_new = aout_new_buffer;
 372     p_dec->pf_aout_buffer_del = aout_del_buffer;
 373     p_dec->pf_vout_buffer_new = vout_new_buffer;
 374     p_dec->pf_vout_buffer_del = vout_del_buffer;
 375     p_dec->pf_picture_link    = vout_link_picture;
 376     p_dec->pf_picture_unlink  = vout_unlink_picture;
 377     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 378     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 379
 380     vlc_object_attach( p_dec, p_input );
 381
 382     /* Find a suitable decoder/packetizer module */
 383     if( i_object_type == VLC_OBJECT_DECODER )
 384         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 385     else
 386         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 387
 388     /* Check if decoder requires already packetized data */
 389     if( i_object_type == VLC_OBJECT_DECODER &&
 390         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 391     {
 392         p_dec->p_owner->p_packetizer =
 393             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 394         if( p_dec->p_owner->p_packetizer )
 395         {
 396             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 397                             &p_dec->fmt_in );
 398
 399             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 400                             &null_es_format );
 401
 402             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 403
 404             p_dec->p_owner->p_packetizer->p_module =
 405                 module_Need( p_dec->p_owner->p_packetizer,
 406                              "packetizer", "$packetizer", 0 );
 407
 408             if( !p_dec->p_owner->p_packetizer->p_module )
 409             {
 410                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 411                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 412                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 413             }
 414         }
 415     }
 416
 417     /* Copy ourself the input replay gain */
 418     if( fmt->i_cat == AUDIO_ES )
 419     {
 420         int i;
 421         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 422         {
 423             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 424             {
 425                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 426                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 427             }
 428             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 429             {
 430                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 431                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 432             }
 433         }
 434     }
 435     return p_dec;
 436 }
 437
 438 /**
 439  * The decoding main loop
 440  *
 441  * \param p_dec the decoder
 442  * \return 0
 443  */
 444 static int DecoderThread( decoder_t * p_dec )
 445 {
 446     block_t *p_block;
 447
 448     /* The decoder's main loop */
 449     while( !p_dec->b_die && !p_dec->b_error )
 450     {
 451         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 452         {
 453             p_dec->b_error = 1;
 454             break;
 455         }
 456         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 457         {
 458             break;
 459         }
 460     }
 461
 462     while( !p_dec->b_die )
 463     {
 464         /* Trash all received PES packets */
 465         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 466         if( p_block ) block_Release( p_block );
 467     }
 468
 469     /* We do it here because of the dll loader that wants close() in the
 470      * same thread than open()/decode() */
 471     module_Unneed( p_dec, p_dec->p_module );
 472
 473     return 0;
 474 }
 475
 476 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 477 {
 478     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 479         *pi_preroll = INT64_MAX;
 480     else if( p->i_pts > 0 )
 481         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 482     else if( p->i_dts > 0 )
 483         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 484 }
 485 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 486 {
 487     input_thread_t *p_input = p_dec->p_owner->p_input;
 488     const int i_rate = p_block->i_rate;
 489     aout_buffer_t *p_aout_buf;
 490
 491     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 492     {
 493         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 494         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 495         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 496
 497         if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 498         {
 499             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 500                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 501             continue;
 502         }
 503
 504         if( p_dec->p_owner->i_preroll_end > 0 )
 505         {
 506             /* FIXME TODO flush audio output (don't know how to do that) */
 507             msg_Dbg( p_dec, "End of audio preroll" );
 508             p_dec->p_owner->i_preroll_end = -1;
 509         }
 510         aout_DecPlay( p_dec->p_owner->p_aout,
 511                       p_dec->p_owner->p_aout_input,
 512                       p_aout_buf, i_rate );
 513     }
 514 }
 515 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 516 {
 517     vlc_mutex_lock( &p_vout->picture_lock );
 518
 519     if( p_pic->i_status == READY_PICTURE )
 520     {
 521         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 522         p_pic->date = 1;
 523     }
 524     else if( p_pic->i_refcount > 0 )
 525     {
 526         p_pic->i_status = DISPLAYED_PICTURE;
 527     }
 528     else
 529     {
 530         p_pic->i_status = DESTROYED_PICTURE;
 531         p_vout->i_heap_size--;
 532     }
 533
 534     vlc_mutex_unlock( &p_vout->picture_lock );
 535 }
 536 static void VoutFlushPicture( vout_thread_t *p_vout )
 537 {
 538     int i;
 539     vlc_mutex_lock( &p_vout->picture_lock );
 540     for( i = 0; i < p_vout->render.i_pictures; i++ )
 541     {
 542         picture_t *p_pic = p_vout->render.pp_picture[i];
 543
 544         if( p_pic->i_status == READY_PICTURE ||
 545             p_pic->i_status == DISPLAYED_PICTURE )
 546         {
 547             /* We cannot change picture status if it is in READY_PICTURE state,
 548              * Just make sure they won't be displayed */
 549             p_pic->date = 1;
 550         }
 551     }
 552     vlc_mutex_unlock( &p_vout->picture_lock );
 553 }
 554 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
 555 {
 556     input_thread_t *p_input = p_dec->p_owner->p_input;
 557     picture_t *p_pic;
 558
 559     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 560     {
 561         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 562         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
 563         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 564
 565         if( p_pic->date < p_dec->p_owner->i_preroll_end )
 566         {
 567             VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
 568             continue;
 569         }
 570
 571         if( p_dec->p_owner->i_preroll_end > 0 )
 572         {
 573             msg_Dbg( p_dec, "End of video preroll" );
 574             if( p_dec->p_owner->p_vout )
 575                 VoutFlushPicture( p_dec->p_owner->p_vout );
 576             /* */
 577             p_dec->p_owner->i_preroll_end = -1;
 578         }
 579
 580         vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 581                           p_pic->date );
 582         vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 583     }
 584 }
 585
 586 /**
 587  * Decode a block
 588  *
 589  * \param p_dec the decoder object
 590  * \param p_block the block to decode
 591  * \return VLC_SUCCESS or an error code
 592  */
 593 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 594 {
 595     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 596     const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
 597
 598     if( p_block && p_block->i_buffer <= 0 )
 599     {
 600         block_Release( p_block );
 601         return VLC_SUCCESS;
 602     }
 603
 604     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 605     {
 606         block_t *p_sout_block;
 607
 608         while( ( p_sout_block =
 609                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 610         {
 611             if( !p_dec->p_owner->p_sout_input )
 612             {
 613                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 614
 615                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 616                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 617                 if( p_dec->fmt_in.psz_language )
 618                 {
 619                     if( p_dec->p_owner->sout.psz_language )
 620                         free( p_dec->p_owner->sout.psz_language );
 621                     p_dec->p_owner->sout.psz_language =
 622                         strdup( p_dec->fmt_in.psz_language );
 623                 }
 624
 625                 p_dec->p_owner->p_sout_input =
 626                     sout_InputNew( p_dec->p_owner->p_sout,
 627                                    &p_dec->p_owner->sout );
 628
 629                 if( p_dec->p_owner->p_sout_input == NULL )
 630                 {
 631                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 632                              (char *)&p_dec->p_owner->sout.i_codec );
 633                     p_dec->b_error = VLC_TRUE;
 634
 635                     while( p_sout_block )
 636                     {
 637                         block_t *p_next = p_sout_block->p_next;
 638                         block_Release( p_sout_block );
 639                         p_sout_block = p_next;
 640                     }
 641                     break;
 642                 }
 643             }
 644
 645             while( p_sout_block )
 646             {
 647                 block_t *p_next = p_sout_block->p_next;
 648
 649                 p_sout_block->p_next = NULL;
 650                 p_sout_block->i_rate = i_rate;
 651
 652                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 653                                       p_sout_block );
 654
 655                 p_sout_block = p_next;
 656             }
 657
 658             /* For now it's enough, as only sout inpact on this flag */
 659             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 660                 p_dec->p_owner->p_input->p->b_out_pace_control )
 661             {
 662                 msg_Dbg( p_dec, "switching to sync mode" );
 663                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 664             }
 665             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 666                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 667             {
 668                 msg_Dbg( p_dec, "switching to async mode" );
 669                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 670             }
 671         }
 672     }
 673     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 674     {
 675         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 676
 677         if( p_dec->p_owner->p_packetizer )
 678         {
 679             block_t *p_packetized_block;
 680             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 681
 682             while( (p_packetized_block =
 683                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 684             {
 685                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 686                 {
 687                     es_format_Clean( &p_dec->fmt_in );
 688                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 689                 }
 690
 691                 while( p_packetized_block )
 692                 {
 693                     block_t *p_next = p_packetized_block->p_next;
 694                     p_packetized_block->p_next = NULL;
 695                     p_packetized_block->i_rate = i_rate;
 696
 697                     DecoderDecodeAudio( p_dec, p_packetized_block );
 698
 699                     p_packetized_block = p_next;
 700                 }
 701             }
 702         }
 703         else
 704         {
 705             DecoderDecodeAudio( p_dec, p_block );
 706         }
 707     }
 708     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 709     {
 710         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 711
 712         if( p_dec->p_owner->p_packetizer )
 713         {
 714             block_t *p_packetized_block;
 715             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 716
 717             while( (p_packetized_block =
 718                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 719             {
 720                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 721                 {
 722                     es_format_Clean( &p_dec->fmt_in );
 723                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 724                 }
 725
 726                 while( p_packetized_block )
 727                 {
 728                     block_t *p_next = p_packetized_block->p_next;
 729                     p_packetized_block->p_next = NULL;
 730                     p_packetized_block->i_rate = i_rate;
 731
 732                     DecoderDecodeVideo( p_dec, p_packetized_block );
 733
 734                     p_packetized_block = p_next;
 735                 }
 736             }
 737         }
 738         else
 739         {
 740             DecoderDecodeVideo( p_dec, p_block );
 741         }
 742     }
 743     else if( p_dec->fmt_in.i_cat == SPU_ES )
 744     {
 745         input_thread_t *p_input = p_dec->p_owner->p_input;
 746         vout_thread_t *p_vout;
 747         subpicture_t *p_spu;
 748
 749         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 750
 751         while( (p_spu = p_dec->pf_decode_sub( p_dec, &p_block ) ) )
 752         {
 753             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 754             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
 755             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 756
 757             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 758             if( p_vout && p_sys->p_spu_vout == p_vout )
 759             {
 760                 /* Prerool does not work very well with subtitle */
 761                 if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 762                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_dec->p_owner->i_preroll_end ) )
 763                     spu_DestroySubpicture( p_vout->p_spu, p_spu );
 764                 else
 765                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 766             }
 767             else
 768             {
 769                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
 770             }
 771             if( p_vout )
 772                 vlc_object_release( p_vout );
 773         }
 774     }
 775     else
 776     {
 777         msg_Err( p_dec, "unknown ES format" );
 778         p_dec->b_error = 1;
 779     }
 780
 781     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 782 }
 783
 784 /**
 785  * Destroys a decoder object
 786  *
 787  * \param p_dec the decoder object
 788  * \return nothing
 789  */
 790 static void DeleteDecoder( decoder_t * p_dec )
 791 {
 792     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 793              (char*)&p_dec->fmt_in.i_codec,
 794              p_dec->p_owner->p_fifo->i_depth );
 795
 796     /* Free all packets still in the decoder fifo. */
 797     block_FifoEmpty( p_dec->p_owner->p_fifo );
 798     block_FifoRelease( p_dec->p_owner->p_fifo );
 799
 800     /* Cleanup */
 801     if( p_dec->p_owner->p_aout_input )
 802         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 803
 804     if( p_dec->p_owner->p_vout )
 805     {
 806         int i_pic;
 807
 808 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 809         /* Hack to make sure all the the pictures are freed by the decoder */
 810         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 811              i_pic++ )
 812         {
 813             if( p_pic->i_status == RESERVED_PICTURE )
 814                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 815             if( p_pic->i_refcount > 0 )
 816                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 817         }
 818 #undef p_pic
 819
 820         /* We are about to die. Reattach video output to p_vlc. */
 821         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
 822     }
 823
 824     if( p_dec->p_owner->p_sout_input )
 825     {
 826         sout_InputDelete( p_dec->p_owner->p_sout_input );
 827         es_format_Clean( &p_dec->p_owner->sout );
 828     }
 829
 830     if( p_dec->fmt_in.i_cat == SPU_ES )
 831     {
 832         vout_thread_t *p_vout;
 833
 834         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 835         if( p_vout )
 836         {
 837             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
 838                          p_dec->p_owner->i_spu_channel );
 839             vlc_object_release( p_vout );
 840         }
 841     }
 842
 843     es_format_Clean( &p_dec->fmt_in );
 844     es_format_Clean( &p_dec->fmt_out );
 845
 846     if( p_dec->p_owner->p_packetizer )
 847     {
 848         module_Unneed( p_dec->p_owner->p_packetizer,
 849                        p_dec->p_owner->p_packetizer->p_module );
 850         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 851         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 852         vlc_object_detach( p_dec->p_owner->p_packetizer );
 853         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 854     }
 855
 856     vlc_object_detach( p_dec );
 857
 858     free( p_dec->p_owner );
 859 }
 860
 861 /*****************************************************************************
 862  * Buffers allocation callbacks for the decoders
 863  *****************************************************************************/
 864 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 865 {
 866     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 867     aout_buffer_t *p_buffer;
 868
 869     if( p_sys->p_aout_input != NULL &&
 870         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 871           p_dec->fmt_out.audio.i_original_channels !=
 872               p_sys->audio.i_original_channels ||
 873           p_dec->fmt_out.audio.i_bytes_per_frame !=
 874               p_sys->audio.i_bytes_per_frame ) )
 875     {
 876         /* Parameters changed, restart the aout */
 877         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 878         p_sys->p_aout_input = NULL;
 879     }
 880
 881     if( p_sys->p_aout_input == NULL )
 882     {
 883         audio_sample_format_t format;
 884         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
 885
 886         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 887         p_sys->audio = p_dec->fmt_out.audio;
 888
 889         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
 890         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
 891                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
 892         {
 893             if ( i_force_dolby == 1 )
 894             {
 895                 format.i_original_channels = format.i_original_channels |
 896                                              AOUT_CHAN_DOLBYSTEREO;
 897             }
 898             else /* i_force_dolby == 2 */
 899             {
 900                 format.i_original_channels = format.i_original_channels &
 901                                              ~AOUT_CHAN_DOLBYSTEREO;
 902             }
 903         }
 904
 905         p_sys->p_aout_input =
 906             aout_DecNew( p_dec, &p_sys->p_aout, &format, &p_dec->fmt_out.audio_replay_gain );
 907         if( p_sys->p_aout_input == NULL )
 908         {
 909             msg_Err( p_dec, "failed to create audio output" );
 910             p_dec->b_error = VLC_TRUE;
 911             return NULL;
 912         }
 913         p_dec->fmt_out.audio.i_bytes_per_frame =
 914             p_sys->audio.i_bytes_per_frame;
 915     }
 916
 917     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 918                                   i_samples );
 919
 920     return p_buffer;
 921 }
 922
 923 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 924 {
 925     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 926                           p_dec->p_owner->p_aout_input, p_buffer );
 927 }
 928
 929 static picture_t *vout_new_buffer( decoder_t *p_dec )
 930 {
 931     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 932     picture_t *p_pic;
 933
 934     if( p_sys->p_vout == NULL ||
 935         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 936         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 937         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 938         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 939     {
 940         if( !p_dec->fmt_out.video.i_width ||
 941             !p_dec->fmt_out.video.i_height )
 942         {
 943             /* Can't create a new vout without display size */
 944             return NULL;
 945         }
 946
 947         if( !p_dec->fmt_out.video.i_visible_width ||
 948             !p_dec->fmt_out.video.i_visible_height )
 949         {
 950             if( p_dec->fmt_in.video.i_visible_width &&
 951                 p_dec->fmt_in.video.i_visible_height )
 952             {
 953                 p_dec->fmt_out.video.i_visible_width =
 954                     p_dec->fmt_in.video.i_visible_width;
 955                 p_dec->fmt_out.video.i_visible_height =
 956                     p_dec->fmt_in.video.i_visible_height;
 957             }
 958             else
 959             {
 960                 p_dec->fmt_out.video.i_visible_width =
 961                     p_dec->fmt_out.video.i_width;
 962                 p_dec->fmt_out.video.i_visible_height =
 963                     p_dec->fmt_out.video.i_height;
 964             }
 965         }
 966
 967         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
 968             var_CreateGetBool( p_dec, "hdtv-fix" ) )
 969         {
 970             p_dec->fmt_out.video.i_visible_height = 1080;
 971             p_dec->fmt_out.video.i_sar_num *= 135;
 972             p_dec->fmt_out.video.i_sar_den *= 136;
 973             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
 974         }
 975
 976         if( !p_dec->fmt_out.video.i_sar_num ||
 977             !p_dec->fmt_out.video.i_sar_den )
 978         {
 979             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
 980               p_dec->fmt_out.video.i_visible_height;
 981
 982             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
 983               p_dec->fmt_out.video.i_visible_width;
 984         }
 985
 986         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
 987                      &p_dec->fmt_out.video.i_sar_den,
 988                      p_dec->fmt_out.video.i_sar_num,
 989                      p_dec->fmt_out.video.i_sar_den, 50000 );
 990
 991         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 992         p_sys->video = p_dec->fmt_out.video;
 993
 994         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 995                                       &p_dec->fmt_out.video );
 996         if( p_sys->p_vout == NULL )
 997         {
 998             msg_Err( p_dec, "failed to create video output" );
 999             p_dec->b_error = VLC_TRUE;
1000             return NULL;
1001         }
1002
1003         if( p_sys->video.i_rmask )
1004             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
1005         if( p_sys->video.i_gmask )
1006             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
1007         if( p_sys->video.i_bmask )
1008             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
1009     }
1010
1011     /* Get a new picture */
1012     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
1013     {
1014         int i_pic, i_ready_pic = 0;
1015
1016         if( p_dec->b_die || p_dec->b_error )
1017         {
1018             return NULL;
1019         }
1020
1021 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1022         /* Check the decoder doesn't leak pictures */
1023         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1024              i_pic++ )
1025         {
1026             if( p_pic->i_status == READY_PICTURE )
1027             {
1028                 if( i_ready_pic++ > 0 ) break;
1029                 else continue;
1030             }
1031
1032             if( p_pic->i_status != DISPLAYED_PICTURE &&
1033                 p_pic->i_status != RESERVED_PICTURE &&
1034                 p_pic->i_status != READY_PICTURE ) break;
1035
1036             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1037                 break;
1038         }
1039         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1040         {
1041             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1042
1043             /* Just free all the pictures */
1044             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1045                  i_pic++ )
1046             {
1047                 if( p_pic->i_status == RESERVED_PICTURE )
1048                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1049                 if( p_pic->i_refcount > 0 )
1050                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1051             }
1052         }
1053 #undef p_pic
1054
1055         msleep( VOUT_OUTMEM_SLEEP );
1056     }
1057
1058     return p_pic;
1059 }
1060
1061 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1062 {
1063     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1064 }
1065
1066 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1067 {
1068     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1069 }
1070
1071 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1072 {
1073     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1074 }
1075
1076 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1077 {
1078     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1079     vout_thread_t *p_vout = NULL;
1080     subpicture_t *p_subpic;
1081     int i_attempts = 30;
1082
1083     while( i_attempts-- )
1084     {
1085         if( p_dec->b_die || p_dec->b_error ) break;
1086
1087         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1088         if( p_vout ) break;
1089
1090         msleep( VOUT_DISPLAY_DELAY );
1091     }
1092
1093     if( !p_vout )
1094     {
1095         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1096         return NULL;
1097     }
1098
1099     if( p_sys->p_spu_vout != p_vout )
1100     {
1101         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1102                      &p_sys->i_spu_channel );
1103         p_sys->p_spu_vout = p_vout;
1104     }
1105
1106     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1107     if( p_subpic )
1108     {
1109         p_subpic->i_channel = p_sys->i_spu_channel;
1110     }
1111
1112     vlc_object_release( p_vout );
1113
1114     return p_subpic;
1115 }
1116
1117 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1118 {
1119     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1120     vout_thread_t *p_vout = NULL;
1121
1122     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1123     if( !p_vout || p_sys->p_spu_vout != p_vout )
1124     {
1125         if( p_vout )
1126             vlc_object_release( p_vout );
1127         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1128         return;
1129     }
1130
1131     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1132
1133     vlc_object_release( p_vout );
1134 }
1135