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 <stdlib.h>
  30 #include <vlc/vlc.h>
  31
  32 #include <vlc_block.h>
  33 #include <vlc_vout.h>
  34 #include <vlc_aout.h>
  35 #include <vlc_sout.h>
  36 #include <vlc_codec.h>
  37 #include <vlc_osd.h>
  38
  39 #include <vlc_interface.h>
  40 #include "audio_output/aout_internal.h"
  41 #include "stream_output/stream_output.h"
  42 #include "input_internal.h"
  43
  44 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
  45 static void        DeleteDecoder( decoder_t * );
  46
  47 static int         DecoderThread( decoder_t * );
  48 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  49
  50 /* Buffers allocation callbacks for the decoders */
  51 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  52 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  53
  54 static picture_t *vout_new_buffer( decoder_t * );
  55 static void vout_del_buffer( decoder_t *, picture_t * );
  56 static void vout_link_picture( decoder_t *, picture_t * );
  57 static void vout_unlink_picture( decoder_t *, picture_t * );
  58
  59 static subpicture_t *spu_new_buffer( decoder_t * );
  60 static void spu_del_buffer( decoder_t *, subpicture_t * );
  61
  62 static es_format_t null_es_format;
  63
  64 struct decoder_owner_sys_t
  65 {
  66     vlc_bool_t      b_own_thread;
  67
  68     int64_t         i_preroll_end;
  69
  70     input_thread_t  *p_input;
  71
  72     aout_instance_t *p_aout;
  73     aout_input_t    *p_aout_input;
  74
  75     vout_thread_t   *p_vout;
  76
  77     vout_thread_t   *p_spu_vout;
  78     int              i_spu_channel;
  79
  80     sout_instance_t         *p_sout;
  81     sout_packetizer_input_t *p_sout_input;
  82
  83     /* Some decoders require already packetized data (ie. not truncated) */
  84     decoder_t *p_packetizer;
  85
  86     /* Current format in use by the output */
  87     video_format_t video;
  88     audio_format_t audio;
  89     es_format_t    sout;
  90
  91     /* fifo */
  92     block_fifo_t *p_fifo;
  93 };
  94
  95 /* decoder_GetInputAttachment:
  96  */
  97 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
  98                                                 const char *psz_name )
  99 {
 100     input_attachment_t *p_attachment;
 101     if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
 102         return NULL;
 103     return p_attachment;
 104 }
 105 /* decoder_GetInputAttachments:
 106  */
 107 int decoder_GetInputAttachments( decoder_t *p_dec,
 108                                  input_attachment_t ***ppp_attachment,
 109                                  int *pi_attachment )
 110 {
 111     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 112                           ppp_attachment, pi_attachment );
 113 }
 114
 115 /**
 116  * Spawns a new decoder thread
 117  *
 118  * \param p_input the input thread
 119  * \param p_es the es descriptor
 120  * \return the spawned decoder object
 121  */
 122 decoder_t *input_DecoderNew( input_thread_t *p_input,
 123                              es_format_t *fmt, vlc_bool_t b_force_decoder )
 124 {
 125     decoder_t   *p_dec = NULL;
 126     vlc_value_t val;
 127
 128     /* If we are in sout mode, search for packetizer module */
 129     if( p_input->p->p_sout && !b_force_decoder )
 130     {
 131         /* Create the decoder configuration structure */
 132         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
 133         if( p_dec == NULL )
 134         {
 135             msg_Err( p_input, "could not create packetizer" );
 136             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 137                             _("VLC could not open the packetizer module.") );
 138             return NULL;
 139         }
 140     }
 141     else
 142     {
 143         /* Create the decoder configuration structure */
 144         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
 145         if( p_dec == NULL )
 146         {
 147             msg_Err( p_input, "could not create decoder" );
 148             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 149                             _("VLC could not open the decoder module.") );
 150             return NULL;
 151         }
 152     }
 153
 154     if( !p_dec->p_module )
 155     {
 156         msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 157                  "VLC probably does not support this sound or video format.",
 158                  (char*)&p_dec->fmt_in.i_codec );
 159         intf_UserFatal( p_dec, VLC_FALSE, _("No suitable decoder module "
 160             "for format"), _("VLC probably does not support the \"%4.4s\" "
 161             "audio or video format. Unfortunately there is no way for you "
 162             "to fix this."), (char*)&p_dec->fmt_in.i_codec );
 163
 164         DeleteDecoder( p_dec );
 165         vlc_object_destroy( p_dec );
 166         return NULL;
 167     }
 168
 169     if( p_input->p->p_sout && p_input->p->input.b_can_pace_control &&
 170         !b_force_decoder )
 171     {
 172         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 173         p_dec->p_owner->b_own_thread = VLC_FALSE;
 174     }
 175     else
 176     {
 177         var_Get( p_input, "minimize-threads", &val );
 178         p_dec->p_owner->b_own_thread = !val.b_bool;
 179     }
 180
 181     if( p_dec->p_owner->b_own_thread )
 182     {
 183         int i_priority;
 184         if( fmt->i_cat == AUDIO_ES )
 185             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 186         else
 187             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 188
 189         /* Spawn the decoder thread */
 190         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 191                                i_priority, VLC_FALSE ) )
 192         {
 193             msg_Err( p_dec, "cannot spawn decoder thread" );
 194             module_Unneed( p_dec, p_dec->p_module );
 195             DeleteDecoder( p_dec );
 196             vlc_object_destroy( p_dec );
 197             return NULL;
 198         }
 199     }
 200
 201     return p_dec;
 202 }
 203
 204 /**
 205  * Kills a decoder thread and waits until it's finished
 206  *
 207  * \param p_input the input thread
 208  * \param p_es the es descriptor
 209  * \return nothing
 210  */
 211 void input_DecoderDelete( decoder_t *p_dec )
 212 {
 213     vlc_object_kill( p_dec );
 214
 215     if( p_dec->p_owner->b_own_thread )
 216     {
 217         /* Make sure the thread leaves the function by
 218          * sending it an empty block. */
 219         block_t *p_block = block_New( p_dec, 0 );
 220         input_DecoderDecode( p_dec, p_block );
 221
 222         vlc_thread_join( p_dec );
 223
 224         /* Don't module_Unneed() here because of the dll loader that wants
 225          * close() in the same thread than open()/decode() */
 226     }
 227     else
 228     {
 229         /* Flush */
 230         input_DecoderDecode( p_dec, NULL );
 231
 232         module_Unneed( p_dec, p_dec->p_module );
 233     }
 234
 235     /* Delete decoder configuration */
 236     DeleteDecoder( p_dec );
 237
 238     /* Delete the decoder */
 239     vlc_object_destroy( p_dec );
 240 }
 241
 242 /**
 243  * Put a block_t in the decoder's fifo.
 244  *
 245  * \param p_dec the decoder object
 246  * \param p_block the data block
 247  */
 248 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 249 {
 250     if( p_dec->p_owner->b_own_thread )
 251     {
 252         if( p_dec->p_owner->p_input->p->b_out_pace_control )
 253         {
 254             /* FIXME !!!!! */
 255             while( !p_dec->b_die && !p_dec->b_error &&
 256                    p_dec->p_owner->p_fifo->i_depth > 10 )
 257             {
 258                 msleep( 1000 );
 259             }
 260         }
 261         else if( p_dec->p_owner->p_fifo->i_size > 50000000 /* 50 MB */ )
 262         {
 263             /* FIXME: ideally we would check the time amount of data
 264              * in the fifo instead of its size. */
 265             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 266                       "consumed quickly enough), resetting fifo!" );
 267             block_FifoEmpty( p_dec->p_owner->p_fifo );
 268         }
 269
 270         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 271     }
 272     else
 273     {
 274         if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
 275         {
 276             if( p_block ) block_Release( p_block );
 277         }
 278         else
 279         {
 280             DecoderDecode( p_dec, p_block );
 281         }
 282     }
 283 }
 284
 285 void input_DecoderDiscontinuity( decoder_t * p_dec, vlc_bool_t b_flush )
 286 {
 287     block_t *p_null;
 288
 289     /* Empty the fifo */
 290     if( p_dec->p_owner->b_own_thread && b_flush )
 291         block_FifoEmpty( p_dec->p_owner->p_fifo );
 292
 293     /* Send a special block */
 294     p_null = block_New( p_dec, 128 );
 295     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 296     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 297     if( p_dec->p_owner->p_packetizer && b_flush )
 298         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 299     memset( p_null->p_buffer, 0, p_null->i_buffer );
 300
 301     input_DecoderDecode( p_dec, p_null );
 302 }
 303
 304 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
 305 {
 306     if( p_dec->p_owner->b_own_thread && p_dec->p_owner->p_fifo->i_depth > 0 )
 307     {
 308         return VLC_FALSE;
 309     }
 310     return VLC_TRUE;
 311 }
 312
 313 /**
 314  * Create a decoder object
 315  *
 316  * \param p_input the input thread
 317  * \param p_es the es descriptor
 318  * \param i_object_type Object type as define in include/vlc_objects.h
 319  * \return the decoder object
 320  */
 321 static decoder_t * CreateDecoder( input_thread_t *p_input,
 322                                   es_format_t *fmt, int i_object_type )
 323 {
 324     decoder_t *p_dec;
 325
 326     p_dec = vlc_object_create( p_input, i_object_type );
 327     if( p_dec == NULL )
 328     {
 329         msg_Err( p_input, "out of memory" );
 330         return NULL;
 331     }
 332
 333     p_dec->pf_decode_audio = 0;
 334     p_dec->pf_decode_video = 0;
 335     p_dec->pf_decode_sub = 0;
 336     p_dec->pf_packetize = 0;
 337
 338    /* Initialize the decoder fifo */
 339     p_dec->p_module = NULL;
 340
 341     memset( &null_es_format, 0, sizeof(es_format_t) );
 342     es_format_Copy( &p_dec->fmt_in, fmt );
 343     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 344
 345     /* Allocate our private structure for the decoder */
 346     p_dec->p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 347     if( p_dec->p_owner == NULL )
 348     {
 349         msg_Err( p_dec, "out of memory" );
 350         return NULL;
 351     }
 352     p_dec->p_owner->b_own_thread = VLC_TRUE;
 353     p_dec->p_owner->i_preroll_end = -1;
 354     p_dec->p_owner->p_input = p_input;
 355     p_dec->p_owner->p_aout = NULL;
 356     p_dec->p_owner->p_aout_input = NULL;
 357     p_dec->p_owner->p_vout = NULL;
 358     p_dec->p_owner->p_spu_vout = NULL;
 359     p_dec->p_owner->i_spu_channel = 0;
 360     p_dec->p_owner->p_sout = p_input->p->p_sout;
 361     p_dec->p_owner->p_sout_input = NULL;
 362     p_dec->p_owner->p_packetizer = NULL;
 363
 364     /* decoder fifo */
 365     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 366     {
 367         msg_Err( p_dec, "out of memory" );
 368         return NULL;
 369     }
 370
 371     /* Set buffers allocation callbacks for the decoders */
 372     p_dec->pf_aout_buffer_new = aout_new_buffer;
 373     p_dec->pf_aout_buffer_del = aout_del_buffer;
 374     p_dec->pf_vout_buffer_new = vout_new_buffer;
 375     p_dec->pf_vout_buffer_del = vout_del_buffer;
 376     p_dec->pf_picture_link    = vout_link_picture;
 377     p_dec->pf_picture_unlink  = vout_unlink_picture;
 378     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 379     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 380
 381     vlc_object_attach( p_dec, p_input );
 382
 383     /* Find a suitable decoder/packetizer module */
 384     if( i_object_type == VLC_OBJECT_DECODER )
 385         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 386     else
 387         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 388
 389     /* Check if decoder requires already packetized data */
 390     if( i_object_type == VLC_OBJECT_DECODER &&
 391         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 392     {
 393         p_dec->p_owner->p_packetizer =
 394             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 395         if( p_dec->p_owner->p_packetizer )
 396         {
 397             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 398                             &p_dec->fmt_in );
 399
 400             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 401                             &null_es_format );
 402
 403             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 404
 405             p_dec->p_owner->p_packetizer->p_module =
 406                 module_Need( p_dec->p_owner->p_packetizer,
 407                              "packetizer", "$packetizer", 0 );
 408
 409             if( !p_dec->p_owner->p_packetizer->p_module )
 410             {
 411                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 412                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 413                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 414             }
 415         }
 416     }
 417
 418     return p_dec;
 419 }
 420
 421 /**
 422  * The decoding main loop
 423  *
 424  * \param p_dec the decoder
 425  * \return 0
 426  */
 427 static int DecoderThread( decoder_t * p_dec )
 428 {
 429     block_t *p_block;
 430
 431     /* The decoder's main loop */
 432     while( !p_dec->b_die && !p_dec->b_error )
 433     {
 434         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 435         {
 436             p_dec->b_error = 1;
 437             break;
 438         }
 439         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 440         {
 441             break;
 442         }
 443     }
 444
 445     while( !p_dec->b_die )
 446     {
 447         /* Trash all received PES packets */
 448         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 449         if( p_block ) block_Release( p_block );
 450     }
 451
 452     /* We do it here because of the dll loader that wants close() in the
 453      * same thread than open()/decode() */
 454     module_Unneed( p_dec, p_dec->p_module );
 455
 456     return 0;
 457 }
 458
 459 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 460 {
 461     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 462         *pi_preroll = INT64_MAX;
 463     else if( p->i_pts > 0 )
 464         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 465     else if( p->i_dts > 0 )
 466         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 467 }
 468 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 469 {
 470     input_thread_t *p_input = p_dec->p_owner->p_input;
 471     const int i_rate = p_block->i_rate;
 472     aout_buffer_t *p_aout_buf;
 473
 474     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 475     {
 476         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 477         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 478         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 479
 480         if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 481         {
 482             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 483                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 484             continue;
 485         }
 486
 487         if( p_dec->p_owner->i_preroll_end > 0 )
 488         {
 489             /* FIXME TODO flush audio output (don't know how to do that) */
 490             msg_Dbg( p_dec, "End of audio preroll" );
 491             p_dec->p_owner->i_preroll_end = -1;
 492         }
 493         aout_DecPlay( p_dec->p_owner->p_aout,
 494                       p_dec->p_owner->p_aout_input,
 495                       p_aout_buf, i_rate );
 496     }
 497 }
 498 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 499 {
 500     vlc_mutex_lock( &p_vout->picture_lock );
 501
 502     if( p_pic->i_status == READY_PICTURE )
 503     {
 504         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 505         p_pic->date = 1;
 506     }
 507     else if( p_pic->i_refcount > 0 )
 508     {
 509         p_pic->i_status = DISPLAYED_PICTURE;
 510     }
 511     else
 512     {
 513         p_pic->i_status = DESTROYED_PICTURE;
 514         p_vout->i_heap_size--;
 515     }
 516
 517     vlc_mutex_unlock( &p_vout->picture_lock );
 518 }
 519 static void VoutFlushPicture( vout_thread_t *p_vout )
 520 {
 521     int i;
 522     vlc_mutex_lock( &p_vout->picture_lock );
 523     for( i = 0; i < p_vout->render.i_pictures; i++ )
 524     {
 525         picture_t *p_pic = p_vout->render.pp_picture[i];
 526
 527         if( p_pic->i_status == READY_PICTURE ||
 528             p_pic->i_status == DISPLAYED_PICTURE )
 529         {
 530             /* We cannot change picture status if it is in READY_PICTURE state,
 531              * Just make sure they won't be displayed */
 532             p_pic->date = 1;
 533         }
 534     }
 535     vlc_mutex_unlock( &p_vout->picture_lock );
 536 }
 537 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
 538 {
 539     input_thread_t *p_input = p_dec->p_owner->p_input;
 540     picture_t *p_pic;
 541
 542     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 543     {
 544         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 545         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
 546         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 547
 548         if( p_pic->date < p_dec->p_owner->i_preroll_end )
 549         {
 550             VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
 551             continue;
 552         }
 553
 554         if( p_dec->p_owner->i_preroll_end > 0 )
 555         {
 556             msg_Dbg( p_dec, "End of video preroll" );
 557             if( p_dec->p_owner->p_vout )
 558                 VoutFlushPicture( p_dec->p_owner->p_vout );
 559             /* */
 560             p_dec->p_owner->i_preroll_end = -1;
 561         }
 562
 563         vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 564                           p_pic->date );
 565         vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 566     }
 567 }
 568
 569 /**
 570  * Decode a block
 571  *
 572  * \param p_dec the decoder object
 573  * \param p_block the block to decode
 574  * \return VLC_SUCCESS or an error code
 575  */
 576 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 577 {
 578     const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
 579
 580     if( p_block && p_block->i_buffer <= 0 )
 581     {
 582         block_Release( p_block );
 583         return VLC_SUCCESS;
 584     }
 585
 586     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 587     {
 588         block_t *p_sout_block;
 589
 590         while( ( p_sout_block =
 591                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 592         {
 593             if( !p_dec->p_owner->p_sout_input )
 594             {
 595                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 596
 597                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 598                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 599                 if( p_dec->fmt_in.psz_language )
 600                 {
 601                     if( p_dec->p_owner->sout.psz_language )
 602                         free( p_dec->p_owner->sout.psz_language );
 603                     p_dec->p_owner->sout.psz_language =
 604                         strdup( p_dec->fmt_in.psz_language );
 605                 }
 606
 607                 p_dec->p_owner->p_sout_input =
 608                     sout_InputNew( p_dec->p_owner->p_sout,
 609                                    &p_dec->p_owner->sout );
 610
 611                 if( p_dec->p_owner->p_sout_input == NULL )
 612                 {
 613                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 614                              (char *)&p_dec->p_owner->sout.i_codec );
 615                     p_dec->b_error = VLC_TRUE;
 616
 617                     while( p_sout_block )
 618                     {
 619                         block_t *p_next = p_sout_block->p_next;
 620                         block_Release( p_sout_block );
 621                         p_sout_block = p_next;
 622                     }
 623                     break;
 624                 }
 625             }
 626
 627             while( p_sout_block )
 628             {
 629                 block_t *p_next = p_sout_block->p_next;
 630
 631                 p_sout_block->p_next = NULL;
 632                 p_sout_block->i_rate = i_rate;
 633
 634                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 635                                       p_sout_block );
 636
 637                 p_sout_block = p_next;
 638             }
 639
 640             /* For now it's enough, as only sout inpact on this flag */
 641             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 642                 p_dec->p_owner->p_input->p->b_out_pace_control )
 643             {
 644                 msg_Dbg( p_dec, "switching to sync mode" );
 645                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 646             }
 647             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 648                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 649             {
 650                 msg_Dbg( p_dec, "switching to async mode" );
 651                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 652             }
 653         }
 654     }
 655     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 656     {
 657         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 658
 659         if( p_dec->p_owner->p_packetizer )
 660         {
 661             block_t *p_packetized_block;
 662             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 663
 664             while( (p_packetized_block =
 665                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 666             {
 667                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 668                 {
 669                     es_format_Clean( &p_dec->fmt_in );
 670                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 671                 }
 672
 673                 while( p_packetized_block )
 674                 {
 675                     block_t *p_next = p_packetized_block->p_next;
 676                     p_packetized_block->p_next = NULL;
 677                     p_packetized_block->i_rate = i_rate;
 678
 679                     DecoderDecodeAudio( p_dec, p_packetized_block );
 680
 681                     p_packetized_block = p_next;
 682                 }
 683             }
 684         }
 685         else
 686         {
 687             DecoderDecodeAudio( p_dec, p_block );
 688         }
 689     }
 690     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 691     {
 692         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 693
 694         if( p_dec->p_owner->p_packetizer )
 695         {
 696             block_t *p_packetized_block;
 697             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 698
 699             while( (p_packetized_block =
 700                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 701             {
 702                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 703                 {
 704                     es_format_Clean( &p_dec->fmt_in );
 705                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 706                 }
 707
 708                 while( p_packetized_block )
 709                 {
 710                     block_t *p_next = p_packetized_block->p_next;
 711                     p_packetized_block->p_next = NULL;
 712                     p_packetized_block->i_rate = i_rate;
 713
 714                     DecoderDecodeVideo( p_dec, p_packetized_block );
 715
 716                     p_packetized_block = p_next;
 717                 }
 718             }
 719         }
 720         else
 721         {
 722             DecoderDecodeVideo( p_dec, p_block );
 723         }
 724     }
 725     else if( p_dec->fmt_in.i_cat == SPU_ES )
 726     {
 727         input_thread_t *p_input = p_dec->p_owner->p_input;
 728         vout_thread_t *p_vout;
 729         subpicture_t *p_spu;
 730
 731         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 732
 733         while( (p_spu = p_dec->pf_decode_sub( p_dec, &p_block ) ) )
 734         {
 735             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 736             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
 737             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 738
 739             if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 740                 ( p_spu->i_stop <= 0 || p_spu->i_stop <= p_dec->p_owner->i_preroll_end ) )
 741             {
 742                 spu_DestroySubpicture( p_dec->p_owner->p_vout->p_spu, p_spu );
 743                 continue;
 744             }
 745
 746             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 747             if( p_vout )
 748             {
 749                 spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 750                 vlc_object_release( p_vout );
 751             }
 752         }
 753     }
 754     else
 755     {
 756         msg_Err( p_dec, "unknown ES format" );
 757         p_dec->b_error = 1;
 758     }
 759
 760     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 761 }
 762
 763 /**
 764  * Destroys a decoder object
 765  *
 766  * \param p_dec the decoder object
 767  * \return nothing
 768  */
 769 static void DeleteDecoder( decoder_t * p_dec )
 770 {
 771     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 772              (char*)&p_dec->fmt_in.i_codec,
 773              p_dec->p_owner->p_fifo->i_depth );
 774
 775     /* Free all packets still in the decoder fifo. */
 776     block_FifoEmpty( p_dec->p_owner->p_fifo );
 777     block_FifoRelease( p_dec->p_owner->p_fifo );
 778
 779     /* Cleanup */
 780     if( p_dec->p_owner->p_aout_input )
 781         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 782
 783     if( p_dec->p_owner->p_vout )
 784     {
 785         int i_pic;
 786
 787 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 788         /* Hack to make sure all the the pictures are freed by the decoder */
 789         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 790              i_pic++ )
 791         {
 792             if( p_pic->i_status == RESERVED_PICTURE )
 793                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 794             if( p_pic->i_refcount > 0 )
 795                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 796         }
 797 #undef p_pic
 798
 799         /* We are about to die. Reattach video output to p_vlc. */
 800         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
 801     }
 802
 803     if( p_dec->p_owner->p_sout_input )
 804     {
 805         sout_InputDelete( p_dec->p_owner->p_sout_input );
 806         es_format_Clean( &p_dec->p_owner->sout );
 807     }
 808
 809     if( p_dec->fmt_in.i_cat == SPU_ES )
 810     {
 811         vout_thread_t *p_vout;
 812
 813         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 814         if( p_vout )
 815         {
 816             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
 817                          p_dec->p_owner->i_spu_channel );
 818             vlc_object_release( p_vout );
 819         }
 820     }
 821
 822     es_format_Clean( &p_dec->fmt_in );
 823     es_format_Clean( &p_dec->fmt_out );
 824
 825     if( p_dec->p_owner->p_packetizer )
 826     {
 827         module_Unneed( p_dec->p_owner->p_packetizer,
 828                        p_dec->p_owner->p_packetizer->p_module );
 829         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 830         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 831         vlc_object_detach( p_dec->p_owner->p_packetizer );
 832         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 833     }
 834
 835     vlc_object_detach( p_dec );
 836
 837     free( p_dec->p_owner );
 838 }
 839
 840 /*****************************************************************************
 841  * Buffers allocation callbacks for the decoders
 842  *****************************************************************************/
 843 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 844 {
 845     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 846     aout_buffer_t *p_buffer;
 847
 848     if( p_sys->p_aout_input != NULL &&
 849         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 850           p_dec->fmt_out.audio.i_original_channels !=
 851               p_sys->audio.i_original_channels ||
 852           p_dec->fmt_out.audio.i_bytes_per_frame !=
 853               p_sys->audio.i_bytes_per_frame ) )
 854     {
 855         /* Parameters changed, restart the aout */
 856         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 857         p_sys->p_aout_input = NULL;
 858     }
 859
 860     if( p_sys->p_aout_input == NULL )
 861     {
 862         audio_sample_format_t format;
 863         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
 864
 865         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 866         p_sys->audio = p_dec->fmt_out.audio;
 867
 868         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
 869         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
 870                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
 871         {
 872             if ( i_force_dolby == 1 )
 873             {
 874                 format.i_original_channels = format.i_original_channels |
 875                                              AOUT_CHAN_DOLBYSTEREO;
 876             }
 877             else /* i_force_dolby == 2 */
 878             {
 879                 format.i_original_channels = format.i_original_channels &
 880                                              ~AOUT_CHAN_DOLBYSTEREO;
 881             }
 882         }
 883
 884         p_sys->p_aout_input =
 885             aout_DecNew( p_dec, &p_sys->p_aout, &format );
 886         if( p_sys->p_aout_input == NULL )
 887         {
 888             msg_Err( p_dec, "failed to create audio output" );
 889             p_dec->b_error = VLC_TRUE;
 890             return NULL;
 891         }
 892         p_dec->fmt_out.audio.i_bytes_per_frame =
 893             p_sys->audio.i_bytes_per_frame;
 894     }
 895
 896     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 897                                   i_samples );
 898
 899     return p_buffer;
 900 }
 901
 902 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 903 {
 904     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 905                           p_dec->p_owner->p_aout_input, p_buffer );
 906 }
 907
 908 static picture_t *vout_new_buffer( decoder_t *p_dec )
 909 {
 910     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 911     picture_t *p_pic;
 912
 913     if( p_sys->p_vout == NULL ||
 914         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 915         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 916         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 917         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 918     {
 919         if( !p_dec->fmt_out.video.i_width ||
 920             !p_dec->fmt_out.video.i_height )
 921         {
 922             /* Can't create a new vout without display size */
 923             return NULL;
 924         }
 925
 926         if( !p_dec->fmt_out.video.i_visible_width ||
 927             !p_dec->fmt_out.video.i_visible_height )
 928         {
 929             if( p_dec->fmt_in.video.i_visible_width &&
 930                 p_dec->fmt_in.video.i_visible_height )
 931             {
 932                 p_dec->fmt_out.video.i_visible_width =
 933                     p_dec->fmt_in.video.i_visible_width;
 934                 p_dec->fmt_out.video.i_visible_height =
 935                     p_dec->fmt_in.video.i_visible_height;
 936             }
 937             else
 938             {
 939                 p_dec->fmt_out.video.i_visible_width =
 940                     p_dec->fmt_out.video.i_width;
 941                 p_dec->fmt_out.video.i_visible_height =
 942                     p_dec->fmt_out.video.i_height;
 943             }
 944         }
 945
 946         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
 947             var_CreateGetBool( p_dec, "hdtv-fix" ) )
 948         {
 949             p_dec->fmt_out.video.i_visible_height = 1080;
 950             p_dec->fmt_out.video.i_sar_num *= 135;
 951             p_dec->fmt_out.video.i_sar_den *= 136;
 952             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
 953         }
 954
 955         if( !p_dec->fmt_out.video.i_sar_num ||
 956             !p_dec->fmt_out.video.i_sar_den )
 957         {
 958             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
 959               p_dec->fmt_out.video.i_visible_height;
 960
 961             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
 962               p_dec->fmt_out.video.i_visible_width;
 963         }
 964
 965         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
 966                      &p_dec->fmt_out.video.i_sar_den,
 967                      p_dec->fmt_out.video.i_sar_num,
 968                      p_dec->fmt_out.video.i_sar_den, 50000 );
 969
 970         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 971         p_sys->video = p_dec->fmt_out.video;
 972
 973         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 974                                       &p_dec->fmt_out.video );
 975         if( p_sys->p_vout == NULL )
 976         {
 977             msg_Err( p_dec, "failed to create video output" );
 978             p_dec->b_error = VLC_TRUE;
 979             return NULL;
 980         }
 981
 982         if( p_sys->video.i_rmask )
 983             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
 984         if( p_sys->video.i_gmask )
 985             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
 986         if( p_sys->video.i_bmask )
 987             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
 988     }
 989
 990     /* Get a new picture */
 991     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 992     {
 993         int i_pic, i_ready_pic = 0;
 994
 995         if( p_dec->b_die || p_dec->b_error )
 996         {
 997             return NULL;
 998         }
 999
1000 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1001         /* Check the decoder doesn't leak pictures */
1002         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1003              i_pic++ )
1004         {
1005             if( p_pic->i_status == READY_PICTURE )
1006             {
1007                 if( i_ready_pic++ > 0 ) break;
1008                 else continue;
1009             }
1010
1011             if( p_pic->i_status != DISPLAYED_PICTURE &&
1012                 p_pic->i_status != RESERVED_PICTURE &&
1013                 p_pic->i_status != READY_PICTURE ) break;
1014
1015             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1016                 break;
1017         }
1018         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1019         {
1020             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1021
1022             /* Just free all the 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 == RESERVED_PICTURE )
1027                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1028                 if( p_pic->i_refcount > 0 )
1029                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1030             }
1031         }
1032 #undef p_pic
1033
1034         msleep( VOUT_OUTMEM_SLEEP );
1035     }
1036
1037     return p_pic;
1038 }
1039
1040 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1041 {
1042     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1043 }
1044
1045 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1046 {
1047     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1048 }
1049
1050 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1051 {
1052     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1053 }
1054
1055 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1056 {
1057     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1058     vout_thread_t *p_vout = NULL;
1059     subpicture_t *p_subpic;
1060     int i_attempts = 30;
1061
1062     while( i_attempts-- )
1063     {
1064         if( p_dec->b_die || p_dec->b_error ) break;
1065
1066         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1067         if( p_vout ) break;
1068
1069         msleep( VOUT_DISPLAY_DELAY );
1070     }
1071
1072     if( !p_vout )
1073     {
1074         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1075         return NULL;
1076     }
1077
1078     if( p_sys->p_spu_vout != p_vout )
1079     {
1080         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1081                      &p_sys->i_spu_channel );
1082         p_sys->p_spu_vout = p_vout;
1083     }
1084
1085     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1086     if( p_subpic )
1087     {
1088         p_subpic->i_channel = p_sys->i_spu_channel;
1089     }
1090
1091     vlc_object_release( p_vout );
1092
1093     return p_subpic;
1094 }
1095
1096 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1097 {
1098     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1099     vout_thread_t *p_vout = NULL;
1100
1101     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1102     if( !p_vout || p_sys->p_spu_vout != p_vout )
1103     {
1104         if( p_vout )
1105             vlc_object_release( p_vout );
1106         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1107         return;
1108     }
1109
1110     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1111
1112     vlc_object_release( p_vout );
1113 }
1114