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 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32 #include <assert.h>
  33
  34 #include <vlc_common.h>
  35
  36 #include <vlc_block.h>
  37 #include <vlc_vout.h>
  38 #include <vlc_aout.h>
  39 #include <vlc_sout.h>
  40 #include <vlc_codec.h>
  41 #include <vlc_osd.h>
  42
  43 #include <vlc_interface.h>
  44 #include "audio_output/aout_internal.h"
  45 #include "stream_output/stream_output.h"
  46 #include "input_internal.h"
  47 #include "input_clock.h"
  48 #include "input_decoder.h"
  49
  50 #include "../video_output/vout_internal.h"
  51
  52 static decoder_t *CreateDecoder( input_thread_t *, es_format_t *, int, sout_instance_t *p_sout );
  53 static void       DeleteDecoder( decoder_t * );
  54
  55 static void      *DecoderThread( vlc_object_t * );
  56 static int        DecoderDecode( decoder_t * p_dec, block_t *p_block );
  57 static void       DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date );
  58
  59 /* Buffers allocation callbacks for the decoders */
  60 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  61 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  62
  63 static picture_t *vout_new_buffer( decoder_t * );
  64 static void vout_del_buffer( decoder_t *, picture_t * );
  65 static void vout_link_picture( decoder_t *, picture_t * );
  66 static void vout_unlink_picture( decoder_t *, picture_t * );
  67
  68 static subpicture_t *spu_new_buffer( decoder_t * );
  69 static void spu_del_buffer( decoder_t *, subpicture_t * );
  70
  71 static es_format_t null_es_format;
  72
  73 struct decoder_owner_sys_t
  74 {
  75     bool      b_own_thread;
  76
  77     int64_t         i_preroll_end;
  78
  79     input_thread_t  *p_input;
  80     input_clock_t   *p_clock;
  81
  82     vout_thread_t   *p_spu_vout;
  83     int              i_spu_channel;
  84     int64_t          i_spu_order;
  85
  86     sout_instance_t         *p_sout;
  87     sout_packetizer_input_t *p_sout_input;
  88
  89     /* Some decoders require already packetized data (ie. not truncated) */
  90     decoder_t *p_packetizer;
  91
  92     /* Current format in use by the output */
  93     video_format_t video;
  94     audio_format_t audio;
  95     es_format_t    sout;
  96
  97     /* fifo */
  98     block_fifo_t *p_fifo;
  99
 100     /* Lock for communication with decoder thread */
 101     vlc_mutex_t lock;
 102     vlc_cond_t  wait;
 103
 104     /* -- These variables need locking on write(only) -- */
 105     aout_instance_t *p_aout;
 106     aout_input_t    *p_aout_input;
 107
 108     vout_thread_t   *p_vout;
 109
 110     /* -- Theses variables need locking on read *and* write -- */
 111     /* Pause */
 112     bool b_paused;
 113     mtime_t i_pause_date;
 114     /* CC */
 115     bool b_cc_supported;
 116     bool pb_cc_present[4];
 117     decoder_t *pp_cc[4];
 118 };
 119
 120 /* */
 121 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 122 {
 123     msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 124              "VLC probably does not support this sound or video format.",
 125              (char*)&codec );
 126     intf_UserFatal( p_dec, false, _("No suitable decoder module"),
 127                     _("VLC does not support the audio or video format \"%4.4s\". "
 128                       "Unfortunately there is no way for you to fix this."), (char*)&codec );
 129 }
 130
 131 /* decoder_GetInputAttachment:
 132  */
 133 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
 134                                                 const char *psz_name )
 135 {
 136     input_attachment_t *p_attachment;
 137     if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
 138         return NULL;
 139     return p_attachment;
 140 }
 141 /* decoder_GetInputAttachments:
 142  */
 143 int decoder_GetInputAttachments( decoder_t *p_dec,
 144                                  input_attachment_t ***ppp_attachment,
 145                                  int *pi_attachment )
 146 {
 147     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 148                           ppp_attachment, pi_attachment );
 149 }
 150 /* decoder_GetDisplayDate:
 151  */
 152 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 153 {
 154     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 155
 156     if( !p_owner->p_clock )
 157         return i_ts;
 158     return input_clock_GetTS( p_owner->p_clock, p_owner->p_input->i_pts_delay, i_ts );
 159 }
 160 /* decoder_GetDisplayRate:
 161  */
 162 int decoder_GetDisplayRate( decoder_t *p_dec )
 163 {
 164     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 165
 166     if( !p_owner->p_clock )
 167         return INPUT_RATE_DEFAULT;
 168     return input_clock_GetRate( p_owner->p_clock );
 169 }
 170
 171 /**
 172  * Spawns a new decoder thread
 173  *
 174  * \param p_input the input thread
 175  * \param p_es the es descriptor
 176  * \return the spawned decoder object
 177  */
 178 decoder_t *input_DecoderNew( input_thread_t *p_input,
 179                              es_format_t *fmt, input_clock_t *p_clock, sout_instance_t *p_sout  )
 180 {
 181     decoder_t   *p_dec = NULL;
 182     vlc_value_t val;
 183
 184 #ifndef ENABLE_SOUT
 185     (void)b_force_decoder;
 186 #else
 187     /* If we are in sout mode, search for packetizer module */
 188     if( p_sout )
 189     {
 190         /* Create the decoder configuration structure */
 191         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER, p_sout );
 192         if( p_dec == NULL )
 193         {
 194             msg_Err( p_input, "could not create packetizer" );
 195             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 196                             _("VLC could not open the packetizer module.") );
 197             return NULL;
 198         }
 199     }
 200     else
 201 #endif
 202     {
 203         /* Create the decoder configuration structure */
 204         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER, p_sout );
 205         if( p_dec == NULL )
 206         {
 207             msg_Err( p_input, "could not create decoder" );
 208             intf_UserFatal( p_input, false, _("Streaming / Transcoding failed"),
 209                             _("VLC could not open the decoder module.") );
 210             return NULL;
 211         }
 212     }
 213
 214     if( !p_dec->p_module )
 215     {
 216         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 217
 218         DeleteDecoder( p_dec );
 219         vlc_object_release( p_dec );
 220         return NULL;
 221     }
 222
 223     p_dec->p_owner->p_clock = p_clock;
 224
 225     if( p_sout && p_sout == p_input->p->p_sout && p_input->p->input.b_can_pace_control )
 226     {
 227         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 228         p_dec->p_owner->b_own_thread = false;
 229     }
 230     else
 231     {
 232         var_Get( p_input, "minimize-threads", &val );
 233         p_dec->p_owner->b_own_thread = !val.b_bool;
 234     }
 235
 236     if( p_dec->p_owner->b_own_thread )
 237     {
 238         int i_priority;
 239         if( fmt->i_cat == AUDIO_ES )
 240             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 241         else
 242             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 243
 244         /* Spawn the decoder thread */
 245         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 246                                i_priority, false ) )
 247         {
 248             msg_Err( p_dec, "cannot spawn decoder thread" );
 249             module_unneed( p_dec, p_dec->p_module );
 250             DeleteDecoder( p_dec );
 251             vlc_object_release( p_dec );
 252             return NULL;
 253         }
 254     }
 255
 256     return p_dec;
 257 }
 258
 259 /**
 260  * Kills a decoder thread and waits until it's finished
 261  *
 262  * \param p_input the input thread
 263  * \param p_es the es descriptor
 264  * \return nothing
 265  */
 266 void input_DecoderDelete( decoder_t *p_dec )
 267 {
 268     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 269
 270     vlc_object_kill( p_dec );
 271
 272     if( p_owner->b_own_thread )
 273     {
 274         /* Make sure we aren't paused anymore */
 275         vlc_mutex_lock( &p_owner->lock );
 276         if( p_owner->b_paused )
 277         {
 278             p_owner->b_paused = false;
 279             vlc_cond_signal( &p_owner->wait );
 280         }
 281         vlc_mutex_unlock( &p_owner->lock );
 282
 283         /* Make sure the thread leaves the function by
 284          * sending it an empty block. */
 285         block_t *p_block = block_New( p_dec, 0 );
 286         input_DecoderDecode( p_dec, p_block );
 287
 288         vlc_thread_join( p_dec );
 289
 290         /* Don't module_unneed() here because of the dll loader that wants
 291          * close() in the same thread than open()/decode() */
 292     }
 293     else
 294     {
 295         /* Flush */
 296         input_DecoderDecode( p_dec, NULL );
 297
 298         module_unneed( p_dec, p_dec->p_module );
 299     }
 300
 301     /* */
 302     if( p_dec->p_owner->b_cc_supported )
 303     {
 304         int i;
 305         for( i = 0; i < 4; i++ )
 306             input_DecoderSetCcState( p_dec, false, i );
 307     }
 308
 309     /* Delete decoder configuration */
 310     DeleteDecoder( p_dec );
 311
 312     /* Delete the decoder */
 313     vlc_object_release( p_dec );
 314 }
 315
 316 /**
 317  * Put a block_t in the decoder's fifo.
 318  *
 319  * \param p_dec the decoder object
 320  * \param p_block the data block
 321  */
 322 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 323 {
 324     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 325
 326     if( p_owner->b_own_thread )
 327     {
 328         if( p_owner->p_input->p->b_out_pace_control )
 329         {
 330             /* FIXME !!!!! */
 331             while( !p_dec->b_die && !p_dec->b_error &&
 332                    block_FifoCount( p_owner->p_fifo ) > 10 )
 333             {
 334                 msleep( 1000 );
 335             }
 336         }
 337         else if( block_FifoSize( p_owner->p_fifo ) > 50000000 /* 50 MB */ )
 338         {
 339             /* FIXME: ideally we would check the time amount of data
 340              * in the fifo instead of its size. */
 341             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 342                       "consumed quickly enough), resetting fifo!" );
 343             block_FifoEmpty( p_owner->p_fifo );
 344         }
 345
 346         block_FifoPut( p_owner->p_fifo, p_block );
 347     }
 348     else
 349     {
 350         if( p_dec->b_error || ( p_block && p_block->i_buffer <= 0 ) )
 351         {
 352             if( p_block )
 353                 block_Release( p_block );
 354         }
 355         else
 356         {
 357             DecoderDecode( p_dec, p_block );
 358         }
 359     }
 360 }
 361
 362 void input_DecoderDiscontinuity( decoder_t * p_dec, bool b_flush )
 363 {
 364     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 365     block_t *p_null;
 366
 367     /* Empty the fifo */
 368     if( p_owner->b_own_thread && b_flush )
 369         block_FifoEmpty( p_owner->p_fifo );
 370
 371     /* Send a special block */
 372     p_null = block_New( p_dec, 128 );
 373     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 374     if( b_flush && p_dec->fmt_in.i_cat == SPU_ES )
 375         p_null->i_flags |= BLOCK_FLAG_CORE_FLUSH;
 376     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 377     if( p_owner->p_packetizer && b_flush )
 378         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 379     memset( p_null->p_buffer, 0, p_null->i_buffer );
 380
 381     input_DecoderDecode( p_dec, p_null );
 382 }
 383
 384 bool input_DecoderEmpty( decoder_t * p_dec )
 385 {
 386     if( p_dec->p_owner->b_own_thread &&
 387         block_FifoCount( p_dec->p_owner->p_fifo ) > 0 )
 388     {
 389         return false;
 390     }
 391     return true;
 392 }
 393
 394 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 395 {
 396     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 397     int i;
 398
 399     vlc_mutex_lock( &p_owner->lock );
 400     for( i = 0; i < 4; i++ )
 401         pb_present[i] =  p_owner->pb_cc_present[i];
 402     vlc_mutex_unlock( &p_owner->lock );
 403 }
 404 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 405 {
 406     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 407
 408     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 409
 410     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 411         return VLC_EGENERIC;
 412
 413     if( b_decode )
 414     {
 415         static const vlc_fourcc_t fcc[4] = {
 416             VLC_FOURCC('c', 'c', '1', ' '),
 417             VLC_FOURCC('c', 'c', '2', ' '),
 418             VLC_FOURCC('c', 'c', '3', ' '),
 419             VLC_FOURCC('c', 'c', '4', ' '),
 420         };
 421         decoder_t *p_cc;
 422         es_format_t fmt;
 423
 424         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 425         p_cc = CreateDecoder( p_owner->p_input, &fmt, VLC_OBJECT_DECODER, p_owner->p_sout );
 426         if( !p_cc )
 427         {
 428             msg_Err( p_dec, "could not create decoder" );
 429             intf_UserFatal( p_dec, false, _("Streaming / Transcoding failed"),
 430                             _("VLC could not open the decoder module.") );
 431             return VLC_EGENERIC;
 432         }
 433         else if( !p_cc->p_module )
 434         {
 435             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 436             DeleteDecoder( p_cc );
 437             vlc_object_release( p_cc );
 438             return VLC_EGENERIC;
 439         }
 440         p_cc->p_owner->p_clock = p_owner->p_clock;
 441
 442         vlc_mutex_lock( &p_owner->lock );
 443         p_owner->pp_cc[i_channel] = p_cc;
 444         vlc_mutex_unlock( &p_owner->lock );
 445     }
 446     else
 447     {
 448         decoder_t *p_cc;
 449
 450         vlc_mutex_lock( &p_owner->lock );
 451         p_cc = p_owner->pp_cc[i_channel];
 452         p_owner->pp_cc[i_channel] = NULL;
 453         vlc_mutex_unlock( &p_owner->lock );
 454
 455         if( p_cc )
 456         {
 457             vlc_object_kill( p_cc );
 458             module_unneed( p_cc, p_cc->p_module );
 459             DeleteDecoder( p_cc );
 460             vlc_object_release( p_cc );
 461         }
 462     }
 463     return VLC_SUCCESS;
 464 }
 465 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 466 {
 467     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 468
 469     *pb_decode = false;
 470     if( i_channel < 0 || i_channel >= 4 || !p_owner->pb_cc_present[i_channel] )
 471         return VLC_EGENERIC;
 472
 473     vlc_mutex_lock( &p_owner->lock );
 474     *pb_decode = p_owner->pp_cc[i_channel] != NULL;
 475     vlc_mutex_unlock( &p_owner->lock );
 476     return VLC_EGENERIC;
 477 }
 478
 479 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 480 {
 481     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 482
 483     vlc_mutex_lock( &p_owner->lock );
 484
 485     assert( (!p_owner->b_paused) != (!b_paused) );
 486     p_owner->b_paused = b_paused;
 487     p_owner->i_pause_date = i_date;
 488     if( p_owner->b_own_thread )
 489         vlc_cond_signal( &p_owner->wait );
 490
 491     DecoderOutputChangePause( p_dec, b_paused, i_date );
 492     vlc_mutex_unlock( &p_owner->lock );
 493 }
 494 /**
 495  * Create a decoder object
 496  *
 497  * \param p_input the input thread
 498  * \param p_es the es descriptor
 499  * \param i_object_type Object type as define in include/vlc_objects.h
 500  * \return the decoder object
 501  */
 502 static decoder_t * CreateDecoder( input_thread_t *p_input,
 503                                   es_format_t *fmt, int i_object_type, sout_instance_t *p_sout )
 504 {
 505     decoder_t *p_dec;
 506     decoder_owner_sys_t *p_owner;
 507     int i;
 508
 509     p_dec = vlc_object_create( p_input, i_object_type );
 510     if( p_dec == NULL )
 511         return NULL;
 512
 513     p_dec->pf_decode_audio = NULL;
 514     p_dec->pf_decode_video = NULL;
 515     p_dec->pf_decode_sub = NULL;
 516     p_dec->pf_get_cc = NULL;
 517     p_dec->pf_packetize = NULL;
 518
 519     /* Initialize the decoder fifo */
 520     p_dec->p_module = NULL;
 521
 522     memset( &null_es_format, 0, sizeof(es_format_t) );
 523     es_format_Copy( &p_dec->fmt_in, fmt );
 524     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 525
 526     /* Allocate our private structure for the decoder */
 527     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 528     if( p_dec->p_owner == NULL )
 529     {
 530         vlc_object_release( p_dec );
 531         return NULL;
 532     }
 533     p_dec->p_owner->b_own_thread = true;
 534     p_dec->p_owner->i_preroll_end = -1;
 535     p_dec->p_owner->p_input = p_input;
 536     p_dec->p_owner->p_aout = NULL;
 537     p_dec->p_owner->p_aout_input = NULL;
 538     p_dec->p_owner->p_vout = NULL;
 539     p_dec->p_owner->p_spu_vout = NULL;
 540     p_dec->p_owner->i_spu_channel = 0;
 541     p_dec->p_owner->i_spu_order = 0;
 542     p_dec->p_owner->p_sout = p_sout;
 543     p_dec->p_owner->p_sout_input = NULL;
 544     p_dec->p_owner->p_packetizer = NULL;
 545
 546     /* decoder fifo */
 547     if( ( p_dec->p_owner->p_fifo = block_FifoNew() ) == NULL )
 548     {
 549         free( p_dec->p_owner );
 550         vlc_object_release( p_dec );
 551         return NULL;
 552     }
 553
 554     /* Set buffers allocation callbacks for the decoders */
 555     p_dec->pf_aout_buffer_new = aout_new_buffer;
 556     p_dec->pf_aout_buffer_del = aout_del_buffer;
 557     p_dec->pf_vout_buffer_new = vout_new_buffer;
 558     p_dec->pf_vout_buffer_del = vout_del_buffer;
 559     p_dec->pf_picture_link    = vout_link_picture;
 560     p_dec->pf_picture_unlink  = vout_unlink_picture;
 561     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 562     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 563
 564     vlc_object_attach( p_dec, p_input );
 565
 566     /* Find a suitable decoder/packetizer module */
 567     if( i_object_type == VLC_OBJECT_DECODER )
 568         p_dec->p_module = module_need( p_dec, "decoder", "$codec", 0 );
 569     else
 570         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", 0 );
 571
 572     /* Check if decoder requires already packetized data */
 573     if( i_object_type == VLC_OBJECT_DECODER &&
 574         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 575     {
 576         p_dec->p_owner->p_packetizer =
 577             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 578         if( p_dec->p_owner->p_packetizer )
 579         {
 580             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 581                             &p_dec->fmt_in );
 582
 583             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 584                             &null_es_format );
 585
 586             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 587
 588             p_dec->p_owner->p_packetizer->p_module =
 589                 module_need( p_dec->p_owner->p_packetizer,
 590                              "packetizer", "$packetizer", 0 );
 591
 592             if( !p_dec->p_owner->p_packetizer->p_module )
 593             {
 594                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 595                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 596                 vlc_object_release( p_dec->p_owner->p_packetizer );
 597             }
 598         }
 599     }
 600
 601     /* Copy ourself the input replay gain */
 602     if( fmt->i_cat == AUDIO_ES )
 603     {
 604         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 605         {
 606             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 607             {
 608                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 609                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 610             }
 611             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 612             {
 613                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 614                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 615             }
 616         }
 617     }
 618     /* */
 619     p_owner->b_cc_supported = false;
 620     if( i_object_type == VLC_OBJECT_DECODER )
 621     {
 622         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 623             p_owner->b_cc_supported = true;
 624         if( p_dec->pf_get_cc )
 625             p_owner->b_cc_supported = true;
 626     }
 627
 628     vlc_mutex_init( &p_owner->lock );
 629     vlc_cond_init( &p_owner->wait );
 630     p_owner->b_paused = false;
 631     p_owner->i_pause_date = 0;
 632     for( i = 0; i < 4; i++ )
 633     {
 634         p_owner->pb_cc_present[i] = false;
 635         p_owner->pp_cc[i] = NULL;
 636     }
 637     return p_dec;
 638 }
 639
 640 /**
 641  * The decoding main loop
 642  *
 643  * \param p_dec the decoder
 644  */
 645 static void* DecoderThread( vlc_object_t *p_this )
 646 {
 647     decoder_t *p_dec = (decoder_t *)p_this;
 648     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 649
 650     block_t *p_block;
 651     int canc = vlc_savecancel();
 652
 653     /* The decoder's main loop */
 654     while( vlc_object_alive( p_dec ) && !p_dec->b_error )
 655     {
 656         if( ( p_block = block_FifoGet( p_owner->p_fifo ) ) == NULL )
 657         {
 658             p_dec->b_error = 1;
 659             break;
 660         }
 661
 662         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 663             break;
 664     }
 665
 666     while( vlc_object_alive( p_dec ) )
 667     {
 668         /* Trash all received PES packets */
 669         p_block = block_FifoGet( p_owner->p_fifo );
 670         if( p_block )
 671             block_Release( p_block );
 672     }
 673
 674     /* We do it here because of the dll loader that wants close() in the
 675      * same thread than open()/decode() */
 676     module_unneed( p_dec, p_dec->p_module );
 677     vlc_restorecancel( canc );
 678     return NULL;
 679 }
 680
 681 static void DecoderWaitUnpause( decoder_t *p_dec )
 682 {
 683     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 684
 685     vlc_mutex_lock( &p_owner->lock );
 686
 687     while( p_owner->b_paused )
 688         vlc_cond_wait( &p_owner->wait, &p_owner->lock );
 689
 690     vlc_mutex_unlock( &p_owner->lock );
 691 }
 692
 693 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 694 {
 695     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 696
 697     vlc_assert_locked( &p_owner->lock );
 698
 699     /* XXX only audio and video output have to be paused.
 700      * - for sout it is useless
 701      * - for subs, it is done by the vout
 702      */
 703     if( p_dec->fmt_in.i_cat == AUDIO_ES )
 704     {
 705         if( p_owner->p_aout && p_owner->p_aout_input )
 706             aout_DecChangePause( p_owner->p_aout, p_owner->p_aout_input,
 707                                  b_paused, i_date );
 708     }
 709     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 710     {
 711         if( p_owner->p_vout )
 712             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
 713     }
 714 }
 715 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 716 {
 717     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 718         *pi_preroll = INT64_MAX;
 719     else if( p->i_pts > 0 )
 720         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 721     else if( p->i_dts > 0 )
 722         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 723 }
 724
 725 static mtime_t DecoderTeletextFixTs( mtime_t i_ts, mtime_t i_ts_delay )
 726 {
 727     mtime_t current_date = mdate();
 728
 729     /* FIXME I don't really like that, es_out SHOULD do it using the video pts */
 730     if( !i_ts || i_ts > current_date + 10000000 || i_ts < current_date )
 731     {
 732         /* ETSI EN 300 472 Annex A : do not take into account the PTS
 733          * for teletext streams. */
 734         return current_date + 400000 + i_ts_delay;
 735     }
 736     return i_ts;
 737 }
 738
 739 static void DecoderSoutBufferFixTs( block_t *p_block,
 740                                     input_clock_t *p_clock, mtime_t i_ts_delay,
 741                                     bool b_teletext )
 742 {
 743     assert( p_clock );
 744
 745     p_block->i_rate = input_clock_GetRate( p_clock );
 746
 747     if( p_block->i_dts > 0 )
 748         p_block->i_dts = input_clock_GetTS( p_clock, i_ts_delay, p_block->i_dts );
 749
 750     if( p_block->i_pts > 0 )
 751         p_block->i_pts = input_clock_GetTS( p_clock, i_ts_delay, p_block->i_pts );
 752
 753     if( p_block->i_length > 0 )
 754         p_block->i_length = ( p_block->i_length * p_block->i_rate +
 755                                 INPUT_RATE_DEFAULT-1 ) / INPUT_RATE_DEFAULT;
 756
 757     if( b_teletext )
 758         p_block->i_pts = DecoderTeletextFixTs( p_block->i_pts, i_ts_delay );
 759 }
 760 static void DecoderAoutBufferFixTs( aout_buffer_t *p_buffer,
 761                                     input_clock_t *p_clock, mtime_t i_ts_delay )
 762 {
 763     /* sout display module does not set clock */
 764     if( !p_clock )
 765         return;
 766
 767     if( p_buffer->start_date )
 768         p_buffer->start_date = input_clock_GetTS( p_clock, i_ts_delay, p_buffer->start_date );
 769
 770     if( p_buffer->end_date )
 771         p_buffer->end_date = input_clock_GetTS( p_clock, i_ts_delay, p_buffer->end_date );
 772 }
 773 static void DecoderVoutBufferFixTs( picture_t *p_picture,
 774                                     input_clock_t *p_clock, mtime_t i_ts_delay )
 775 {
 776     /* sout display module does not set clock */
 777     if( !p_clock )
 778         return;
 779
 780     if( p_picture->date )
 781         p_picture->date = input_clock_GetTS( p_clock, i_ts_delay, p_picture->date );
 782 }
 783 static void DecoderSpuBufferFixTs( subpicture_t *p_subpic,
 784                                    input_clock_t *p_clock, mtime_t i_ts_delay,
 785                                    bool b_teletext )
 786 {
 787     bool b_ephemere = p_subpic->i_start == p_subpic->i_stop;
 788
 789     /* sout display module does not set clock */
 790     if( !p_clock )
 791         return;
 792
 793     if( p_subpic->i_start )
 794         p_subpic->i_start = input_clock_GetTS( p_clock, i_ts_delay, p_subpic->i_start );
 795
 796     if( p_subpic->i_stop )
 797         p_subpic->i_stop = input_clock_GetTS( p_clock, i_ts_delay, p_subpic->i_stop );
 798
 799     /* Do not create ephemere picture because of rounding errors */
 800     if( !b_ephemere && p_subpic->i_start == p_subpic->i_stop )
 801         p_subpic->i_stop++;
 802
 803     if( b_teletext )
 804         p_subpic->i_start = DecoderTeletextFixTs( p_subpic->i_start, i_ts_delay );
 805 }
 806
 807 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 808 {
 809     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 810     input_thread_t  *p_input = p_owner->p_input;
 811     input_clock_t   *p_clock = p_owner->p_clock;
 812     aout_buffer_t   *p_aout_buf;
 813     int i_decoded = 0;
 814     int i_lost = 0;
 815     int i_played = 0;
 816
 817     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 818     {
 819         aout_instance_t *p_aout = p_owner->p_aout;
 820         aout_input_t    *p_aout_input = p_owner->p_aout_input;
 821         int i_rate;
 822         int i_lost;
 823         int i_played;
 824
 825         if( p_dec->b_die )
 826         {
 827             /* It prevent freezing VLC in case of broken decoder */
 828             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 829             if( p_block )
 830                 block_Release( p_block );
 831             break;
 832         }
 833         i_decoded++;
 834
 835         if( p_aout_buf->start_date < p_owner->i_preroll_end )
 836         {
 837             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 838             continue;
 839         }
 840
 841         if( p_owner->i_preroll_end > 0 )
 842         {
 843             /* FIXME TODO flush audio output (don't know how to do that) */
 844             msg_Dbg( p_dec, "End of audio preroll" );
 845             p_owner->i_preroll_end = -1;
 846         }
 847
 848         DecoderWaitUnpause( p_dec );
 849
 850         DecoderAoutBufferFixTs( p_aout_buf, p_clock, p_input->i_pts_delay );
 851
 852         if( p_clock )
 853             i_rate = input_clock_GetRate( p_clock );
 854         else if( p_block && p_block->i_rate > 0 )
 855             i_rate = p_block->i_rate;
 856         else
 857             i_rate = INPUT_RATE_DEFAULT;
 858
 859         /* FIXME TODO take care of audio-delay for mdate check */
 860         const mtime_t i_max_date = mdate() + p_input->i_pts_delay + AOUT_MAX_ADVANCE_TIME;
 861
 862         if( p_aout_buf->start_date > 0 &&
 863             p_aout_buf->start_date <= i_max_date &&
 864             i_rate >= INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE &&
 865             i_rate <= INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
 866         {
 867             /* Wait if we are too early
 868              * FIXME that's plain ugly to do it here */
 869             mwait( p_aout_buf->start_date - AOUT_MAX_PREPARE_TIME );
 870
 871             if( !aout_DecPlay( p_aout, p_aout_input, p_aout_buf, i_rate ) )
 872                 i_played++;
 873             i_lost += aout_DecGetResetLost( p_aout, p_aout_input );
 874         }
 875         else
 876         {
 877             if( p_aout_buf->start_date <= 0 )
 878             {
 879                 msg_Warn( p_dec, "non-dated audio buffer received" );
 880             }
 881             else if( p_aout_buf->start_date > i_max_date )
 882             {
 883                 msg_Warn( p_aout, "received buffer in the future (%"PRId64")",
 884                           p_aout_buf->start_date - mdate() );
 885             }
 886             i_lost++;
 887             aout_DecDeleteBuffer( p_aout, p_aout_input, p_aout_buf );
 888         }
 889
 890     }
 891
 892     /* Update ugly stat */
 893     if( i_decoded > 0 || i_lost > 0 || i_played > 0 )
 894     {
 895         vlc_mutex_lock( &p_input->p->counters.counters_lock);
 896
 897         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_abuffers,
 898                              i_lost, NULL );
 899         stats_UpdateInteger( p_dec, p_input->p->counters.p_played_abuffers,
 900                              i_played, NULL );
 901         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio,
 902                              i_decoded, NULL );
 903
 904         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
 905     }
 906 }
 907 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
 908 {
 909     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 910     block_t *p_cc;
 911     bool pb_present[4];
 912     int i;
 913     int i_cc_decoder;
 914
 915     assert( p_dec_cc->pf_get_cc != NULL );
 916
 917     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
 918     if( !p_owner->b_cc_supported )
 919         return;
 920
 921     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
 922     if( !p_cc )
 923         return;
 924
 925     vlc_mutex_lock( &p_owner->lock );
 926     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
 927     {
 928         p_owner->pb_cc_present[i] |= pb_present[i];
 929         if( p_owner->pp_cc[i] )
 930             i_cc_decoder++;
 931     }
 932
 933     for( i = 0; i < 4; i++ )
 934     {
 935         if( !p_owner->pp_cc[i] )
 936             continue;
 937
 938         if( i_cc_decoder > 1 )
 939             DecoderDecode( p_owner->pp_cc[i], block_Duplicate( p_cc ) );
 940         else
 941             DecoderDecode( p_owner->pp_cc[i], p_cc );
 942         i_cc_decoder--;
 943     }
 944     vlc_mutex_unlock( &p_owner->lock );
 945 }
 946 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 947 {
 948     vlc_mutex_lock( &p_vout->picture_lock );
 949
 950     if( p_pic->i_status == READY_PICTURE )
 951     {
 952         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 953         p_pic->date = 1;
 954     }
 955     else if( p_pic->i_refcount > 0 )
 956     {
 957         p_pic->i_status = DISPLAYED_PICTURE;
 958     }
 959     else
 960     {
 961         p_pic->i_status = DESTROYED_PICTURE;
 962         picture_CleanupQuant( p_pic );
 963         p_vout->i_heap_size--;
 964     }
 965
 966     vlc_mutex_unlock( &p_vout->picture_lock );
 967 }
 968 static void VoutFlushPicture( vout_thread_t *p_vout )
 969 {
 970     int i;
 971     vlc_mutex_lock( &p_vout->picture_lock );
 972     for( i = 0; i < p_vout->render.i_pictures; i++ )
 973     {
 974         picture_t *p_pic = p_vout->render.pp_picture[i];
 975
 976         if( p_pic->i_status == READY_PICTURE ||
 977             p_pic->i_status == DISPLAYED_PICTURE )
 978         {
 979             /* We cannot change picture status if it is in READY_PICTURE state,
 980              * Just make sure they won't be displayed */
 981             p_pic->date = 1;
 982         }
 983     }
 984     vlc_mutex_unlock( &p_vout->picture_lock );
 985 }
 986
 987 #if 0
 988 static void DecoderOptimizePtsDelay( decoder_t *p_dec )
 989 {
 990     input_thread_t *p_input = p_dec->p_owner->p_input;
 991     vout_thread_t *p_vout = p_dec->p_owner->p_vout;
 992     input_thread_private_t *p_priv = p_input->p;
 993
 994     picture_t *p_old = NULL;
 995     picture_t *p_young = NULL;
 996     int i;
 997
 998     /* Enable with --auto-adjust-pts-delay */
 999     if( !p_priv->pts_adjust.b_auto_adjust )
1000         return;
1001
1002     for( i = 0; i < I_RENDERPICTURES; i++ )
1003     {
1004         picture_t *p_pic = PP_RENDERPICTURE[i];
1005
1006         if( p_pic->i_status != READY_PICTURE )
1007             continue;
1008
1009         if( !p_old || p_pic->date < p_old->date )
1010             p_old = p_pic;
1011         if( !p_young || p_pic->date > p_young->date )
1012             p_young = p_pic;
1013     }
1014
1015     if( !p_young || !p_old )
1016         return;
1017
1018     /* Try to find if we can reduce the pts
1019      * This first draft is way too simple, and we can't say if the
1020      * algo will converge. It's also full of constants.
1021      * But this simple algo allows to reduce the latency
1022      * to the minimum.
1023      * The whole point of this, is to bypass the pts_delay set
1024      * by the access but also the delay arbitraly set by
1025      * the remote server.
1026      * Actually the remote server's muxer may set up a
1027      * pts<->dts delay in the muxed stream. That is
1028      * why we may end up in having a negative pts_delay,
1029      * to compensate that artificial delay. */
1030     const mtime_t i_buffer_length = p_young->date - p_old->date;
1031     int64_t i_pts_slide = 0;
1032     if( i_buffer_length < 10000 )
1033     {
1034         if( p_priv->pts_adjust.i_num_faulty > 10 )
1035         {
1036             i_pts_slide = __MAX(p_input->i_pts_delay *3 / 2, 10000);
1037             p_priv->pts_adjust.i_num_faulty = 0;
1038         }
1039         if( p_priv->pts_adjust.b_to_high )
1040         {
1041             p_priv->pts_adjust.b_to_high = !p_priv->pts_adjust.b_to_high;
1042             p_priv->pts_adjust.i_num_faulty = 0;
1043         }
1044         p_priv->pts_adjust.i_num_faulty++;
1045     }
1046     else if( i_buffer_length > 100000 )
1047     {
1048         if( p_priv->pts_adjust.i_num_faulty > 25 )
1049         {
1050             i_pts_slide = -i_buffer_length/2;
1051             p_priv->pts_adjust.i_num_faulty = 0;
1052         }
1053         if( p_priv->pts_adjust.b_to_high )
1054         {
1055             p_priv->pts_adjust.b_to_high = !p_priv->pts_adjust.b_to_high;
1056             p_priv->pts_adjust.i_num_faulty = 0;
1057         }
1058         p_priv->pts_adjust.i_num_faulty++;
1059     }
1060     if( i_pts_slide != 0 )
1061     {
1062         const mtime_t i_pts_delay_org = p_input->i_pts_delay;
1063
1064         p_input->i_pts_delay += i_pts_slide;
1065
1066         /* Don't play with the pts delay for more than -2<->3sec */
1067         if( p_input->i_pts_delay < -2000000 )
1068             p_input->i_pts_delay = -2000000;
1069         else if( p_input->i_pts_delay > 3000000 )
1070             p_input->i_pts_delay = 3000000;
1071         i_pts_slide = p_input->i_pts_delay - i_pts_delay_org;
1072
1073         msg_Dbg( p_input, "Sliding the pts by %dms pts delay at %dms picture buffer was %dms",
1074             (int)i_pts_slide/1000, (int)p_input->i_pts_delay/1000, (int)i_buffer_length/1000);
1075
1076         vlc_mutex_lock( &p_vout->picture_lock );
1077         /* Slide all the picture */
1078         for( i = 0; i < I_RENDERPICTURES; i++ )
1079             PP_RENDERPICTURE[i]->date += i_pts_slide;
1080         /* FIXME: slide aout/spu */
1081         vlc_mutex_unlock( &p_vout->picture_lock );
1082     }
1083 }
1084 #endif
1085
1086 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1087 {
1088     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1089     input_thread_t *p_input = p_owner->p_input;
1090     picture_t      *p_pic;
1091     int i_lost = 0;
1092     int i_decoded = 0;
1093     int i_displayed = 0;
1094
1095     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1096     {
1097         vout_thread_t  *p_vout = p_owner->p_vout;
1098         if( p_dec->b_die )
1099         {
1100             /* It prevent freezing VLC in case of broken decoder */
1101             VoutDisplayedPicture( p_vout, p_pic );
1102             if( p_block )
1103                 block_Release( p_block );
1104             break;
1105         }
1106
1107         i_decoded++;
1108
1109         if( p_pic->date < p_owner->i_preroll_end )
1110         {
1111             VoutDisplayedPicture( p_vout, p_pic );
1112             continue;
1113         }
1114
1115         if( p_owner->i_preroll_end > 0 )
1116         {
1117             msg_Dbg( p_dec, "End of video preroll" );
1118             if( p_vout )
1119                 VoutFlushPicture( p_vout );
1120             /* */
1121             p_owner->i_preroll_end = -1;
1122         }
1123
1124         if( p_dec->pf_get_cc &&
1125             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1126             DecoderGetCc( p_dec, p_dec );
1127
1128         DecoderWaitUnpause( p_dec );
1129
1130         DecoderVoutBufferFixTs( p_pic, p_owner->p_clock, p_input->i_pts_delay );
1131
1132         /* Video is never delayed so simple */
1133         const mtime_t i_max_date = mdate() + p_input->i_pts_delay + VOUT_BOGUS_DELAY;
1134
1135         if( p_pic->date > 0 && p_pic->date < i_max_date )
1136         {
1137             vout_DatePicture( p_vout, p_pic, p_pic->date );
1138
1139             /* Re-enable it but do it right this time */
1140             //DecoderOptimizePtsDelay( p_dec );
1141             vout_DisplayPicture( p_vout, p_pic );
1142         }
1143         else
1144         {
1145             if( p_pic->date <= 0 )
1146             {
1147                 msg_Warn( p_vout, "non-dated video buffer received" );
1148             }
1149             else
1150             {
1151                 msg_Warn( p_vout, "early picture skipped (%"PRId64")",
1152                           p_pic->date - mdate() );
1153             }
1154             i_lost++;
1155             VoutDisplayedPicture( p_vout, p_pic );
1156         }
1157         int i_tmp_display;
1158         int i_tmp_lost;
1159         vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1160
1161         i_displayed += i_tmp_display;
1162         i_lost += i_tmp_lost;
1163     }
1164     if( i_decoded > 0 || i_lost > 0 || i_displayed > 0 )
1165     {
1166         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1167
1168         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video,
1169                              i_decoded, NULL );
1170         stats_UpdateInteger( p_dec, p_input->p->counters.p_lost_pictures,
1171                              i_lost , NULL);
1172
1173         stats_UpdateInteger( p_dec, p_input->p->counters.p_displayed_pictures,
1174                              i_displayed, NULL);
1175
1176         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1177     }
1178 }
1179
1180 /**
1181  * Decode a block
1182  *
1183  * \param p_dec the decoder object
1184  * \param p_block the block to decode
1185  * \return VLC_SUCCESS or an error code
1186  */
1187 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
1188 {
1189     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1190     const bool b_telx = p_dec->fmt_in.i_codec == VLC_FOURCC('t','e','l','x');
1191
1192     if( p_block && p_block->i_buffer <= 0 )
1193     {
1194         block_Release( p_block );
1195         return VLC_SUCCESS;
1196     }
1197
1198 #ifdef ENABLE_SOUT
1199     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
1200     {
1201         block_t *p_sout_block;
1202
1203         while( ( p_sout_block =
1204                      p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1205         {
1206             if( !p_owner->p_sout_input )
1207             {
1208                 es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1209
1210                 p_owner->sout.i_group = p_dec->fmt_in.i_group;
1211                 p_owner->sout.i_id = p_dec->fmt_in.i_id;
1212                 if( p_dec->fmt_in.psz_language )
1213                 {
1214                     if( p_owner->sout.psz_language )
1215                         free( p_owner->sout.psz_language );
1216                     p_owner->sout.psz_language =
1217                         strdup( p_dec->fmt_in.psz_language );
1218                 }
1219
1220                 p_owner->p_sout_input =
1221                     sout_InputNew( p_owner->p_sout,
1222                                    &p_owner->sout );
1223
1224                 if( p_owner->p_sout_input == NULL )
1225                 {
1226                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1227                              (char *)&p_owner->sout.i_codec );
1228                     p_dec->b_error = true;
1229
1230                     while( p_sout_block )
1231                     {
1232                         block_t *p_next = p_sout_block->p_next;
1233                         block_Release( p_sout_block );
1234                         p_sout_block = p_next;
1235                     }
1236                     break;
1237                 }
1238             }
1239
1240             while( p_sout_block )
1241             {
1242                 block_t *p_next = p_sout_block->p_next;
1243
1244                 p_sout_block->p_next = NULL;
1245
1246                 DecoderWaitUnpause( p_dec );
1247
1248                 DecoderSoutBufferFixTs( p_sout_block,
1249                                         p_owner->p_clock, p_owner->p_input->i_pts_delay, b_telx );
1250
1251                 sout_InputSendBuffer( p_owner->p_sout_input,
1252                                       p_sout_block );
1253
1254                 p_sout_block = p_next;
1255             }
1256
1257             /* For now it's enough, as only sout impact on this flag */
1258             if( p_owner->p_sout->i_out_pace_nocontrol > 0 &&
1259                 p_owner->p_input->p->b_out_pace_control )
1260             {
1261                 msg_Dbg( p_dec, "switching to sync mode" );
1262                 p_owner->p_input->p->b_out_pace_control = false;
1263             }
1264             else if( p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
1265                      !p_owner->p_input->p->b_out_pace_control )
1266             {
1267                 msg_Dbg( p_dec, "switching to async mode" );
1268                 p_owner->p_input->p->b_out_pace_control = true;
1269             }
1270         }
1271     }
1272     else
1273 #endif
1274     if( p_dec->fmt_in.i_cat == AUDIO_ES )
1275     {
1276         if( p_block )
1277             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1278
1279         if( p_owner->p_packetizer )
1280         {
1281             block_t *p_packetized_block;
1282             decoder_t *p_packetizer = p_owner->p_packetizer;
1283
1284             while( (p_packetized_block =
1285                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1286             {
1287                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1288                 {
1289                     es_format_Clean( &p_dec->fmt_in );
1290                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1291                 }
1292
1293                 while( p_packetized_block )
1294                 {
1295                     block_t *p_next = p_packetized_block->p_next;
1296                     p_packetized_block->p_next = NULL;
1297
1298                     DecoderDecodeAudio( p_dec, p_packetized_block );
1299
1300                     p_packetized_block = p_next;
1301                 }
1302             }
1303         }
1304         else if( p_block )
1305         {
1306             DecoderDecodeAudio( p_dec, p_block );
1307         }
1308     }
1309     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
1310     {
1311         if( p_block )
1312             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1313
1314         if( p_owner->p_packetizer )
1315         {
1316             block_t *p_packetized_block;
1317             decoder_t *p_packetizer = p_owner->p_packetizer;
1318
1319             while( (p_packetized_block =
1320                     p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1321             {
1322                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1323                 {
1324                     es_format_Clean( &p_dec->fmt_in );
1325                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1326                 }
1327                 if( p_packetizer->pf_get_cc )
1328                     DecoderGetCc( p_dec, p_packetizer );
1329
1330                 while( p_packetized_block )
1331                 {
1332                     block_t *p_next = p_packetized_block->p_next;
1333                     p_packetized_block->p_next = NULL;
1334
1335                     DecoderDecodeVideo( p_dec, p_packetized_block );
1336
1337                     p_packetized_block = p_next;
1338                 }
1339             }
1340         }
1341         else if( p_block )
1342         {
1343             DecoderDecodeVideo( p_dec, p_block );
1344         }
1345     }
1346     else if( p_dec->fmt_in.i_cat == SPU_ES )
1347     {
1348         input_thread_t *p_input = p_owner->p_input;
1349         vout_thread_t *p_vout;
1350         subpicture_t *p_spu;
1351         bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1352         bool b_flush = false;
1353
1354         if( p_block )
1355         {
1356             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1357             b_flush = (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH) != 0;
1358         }
1359
1360         if( !b_flushing && b_flush && p_owner->p_spu_vout )
1361         {
1362             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1363
1364             if( p_vout && p_owner->p_spu_vout == p_vout )
1365                 spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1366                              p_owner->i_spu_channel );
1367
1368             if( p_vout )
1369                 vlc_object_release( p_vout );
1370         }
1371
1372         while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1373         {
1374             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1375             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
1376             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1377
1378             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1379             if( p_vout && p_owner->p_spu_vout == p_vout )
1380             {
1381                 /* Preroll does not work very well with subtitle */
1382                 if( p_spu->i_start > 0 &&
1383                     p_spu->i_start < p_owner->i_preroll_end &&
1384                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_owner->i_preroll_end ) )
1385                 {
1386                     subpicture_Delete( p_spu );
1387                 }
1388                 else
1389                 {
1390                     DecoderWaitUnpause( p_dec );
1391
1392                     DecoderSpuBufferFixTs( p_spu, p_owner->p_clock, p_input->i_pts_delay, b_telx );
1393                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
1394                 }
1395             }
1396             else
1397             {
1398                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
1399             }
1400             if( p_vout )
1401                 vlc_object_release( p_vout );
1402         }
1403     }
1404     else
1405     {
1406         msg_Err( p_dec, "unknown ES format" );
1407         p_dec->b_error = 1;
1408     }
1409
1410     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
1411 }
1412
1413 /**
1414  * Destroys a decoder object
1415  *
1416  * \param p_dec the decoder object
1417  * \return nothing
1418  */
1419 static void DeleteDecoder( decoder_t * p_dec )
1420 {
1421     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1422
1423     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1424              (char*)&p_dec->fmt_in.i_codec,
1425              (unsigned)block_FifoCount( p_owner->p_fifo ) );
1426
1427     /* Free all packets still in the decoder fifo. */
1428     block_FifoEmpty( p_owner->p_fifo );
1429     block_FifoRelease( p_owner->p_fifo );
1430
1431     /* Cleanup */
1432     if( p_owner->p_aout_input )
1433         aout_DecDelete( p_owner->p_aout, p_owner->p_aout_input );
1434     if( p_owner->p_aout )
1435     {
1436         vlc_object_release( p_owner->p_aout );
1437         p_owner->p_aout = NULL;
1438     }
1439     if( p_owner->p_vout )
1440     {
1441         int i_pic;
1442
1443 #define p_pic p_owner->p_vout->render.pp_picture[i_pic]
1444         /* Hack to make sure all the the pictures are freed by the decoder */
1445         for( i_pic = 0; i_pic < p_owner->p_vout->render.i_pictures;
1446              i_pic++ )
1447         {
1448             if( p_pic->i_status == RESERVED_PICTURE )
1449                 vout_DestroyPicture( p_owner->p_vout, p_pic );
1450             if( p_pic->i_refcount > 0 )
1451                 vout_UnlinkPicture( p_owner->p_vout, p_pic );
1452         }
1453 #undef p_pic
1454
1455         /* We are about to die. Reattach video output to p_vlc. */
1456         vout_Request( p_dec, p_owner->p_vout, NULL );
1457         var_SetBool( p_owner->p_input, "intf-change-vout", true );
1458     }
1459
1460 #ifdef ENABLE_SOUT
1461     if( p_owner->p_sout_input )
1462     {
1463         sout_InputDelete( p_owner->p_sout_input );
1464         es_format_Clean( &p_owner->sout );
1465     }
1466 #endif
1467
1468     if( p_dec->fmt_in.i_cat == SPU_ES )
1469     {
1470         vout_thread_t *p_vout;
1471
1472         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1473         if( p_vout && p_owner->p_spu_vout == p_vout )
1474         {
1475             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
1476                          p_owner->i_spu_channel );
1477             vlc_object_release( p_vout );
1478         }
1479     }
1480
1481     es_format_Clean( &p_dec->fmt_in );
1482     es_format_Clean( &p_dec->fmt_out );
1483
1484     if( p_owner->p_packetizer )
1485     {
1486         module_unneed( p_owner->p_packetizer,
1487                        p_owner->p_packetizer->p_module );
1488         es_format_Clean( &p_owner->p_packetizer->fmt_in );
1489         es_format_Clean( &p_owner->p_packetizer->fmt_out );
1490         vlc_object_detach( p_owner->p_packetizer );
1491         vlc_object_release( p_owner->p_packetizer );
1492     }
1493
1494     vlc_cond_destroy( &p_owner->wait );
1495     vlc_mutex_destroy( &p_owner->lock );
1496
1497     vlc_object_detach( p_dec );
1498
1499     free( p_owner );
1500 }
1501
1502 /*****************************************************************************
1503  * Buffers allocation callbacks for the decoders
1504  *****************************************************************************/
1505 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
1506 {
1507     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1508     aout_buffer_t *p_buffer;
1509
1510     if( p_owner->p_aout_input != NULL &&
1511         ( p_dec->fmt_out.audio.i_rate != p_owner->audio.i_rate ||
1512           p_dec->fmt_out.audio.i_original_channels !=
1513               p_owner->audio.i_original_channels ||
1514           p_dec->fmt_out.audio.i_bytes_per_frame !=
1515               p_owner->audio.i_bytes_per_frame ) )
1516     {
1517         aout_input_t *p_aout_input = p_owner->p_aout_input;
1518
1519         /* Parameters changed, restart the aout */
1520         vlc_mutex_lock( &p_owner->lock );
1521
1522         p_owner->p_aout_input = NULL;
1523         aout_DecDelete( p_owner->p_aout, p_aout_input );
1524
1525         vlc_mutex_unlock( &p_owner->lock );
1526     }
1527
1528     if( p_owner->p_aout_input == NULL )
1529     {
1530         const int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
1531         audio_sample_format_t format;
1532         aout_input_t *p_aout_input;
1533         aout_instance_t *p_aout;
1534
1535         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1536         p_owner->audio = p_dec->fmt_out.audio;
1537
1538         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
1539         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
1540                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1541         {
1542             if ( i_force_dolby == 1 )
1543             {
1544                 format.i_original_channels = format.i_original_channels |
1545                                              AOUT_CHAN_DOLBYSTEREO;
1546             }
1547             else /* i_force_dolby == 2 */
1548             {
1549                 format.i_original_channels = format.i_original_channels &
1550                                              ~AOUT_CHAN_DOLBYSTEREO;
1551             }
1552         }
1553
1554         p_aout = p_owner->p_aout;
1555         p_aout_input = aout_DecNew( p_dec, &p_aout,
1556                                     &format, &p_dec->fmt_out.audio_replay_gain );
1557
1558         vlc_mutex_lock( &p_owner->lock );
1559         p_owner->p_aout = p_aout;
1560         p_owner->p_aout_input = p_aout_input;
1561         vlc_mutex_unlock( &p_owner->lock );
1562
1563         if( p_owner->p_aout_input == NULL )
1564         {
1565             msg_Err( p_dec, "failed to create audio output" );
1566             p_dec->b_error = true;
1567             return NULL;
1568         }
1569         p_dec->fmt_out.audio.i_bytes_per_frame =
1570             p_owner->audio.i_bytes_per_frame;
1571     }
1572
1573     p_buffer = aout_DecNewBuffer( p_owner->p_aout_input, i_samples );
1574
1575     return p_buffer;
1576 }
1577
1578 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1579 {
1580     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1581
1582     aout_DecDeleteBuffer( p_owner->p_aout,
1583                           p_owner->p_aout_input, p_buffer );
1584 }
1585
1586
1587 int vout_CountPictureAvailable( vout_thread_t *p_vout );
1588
1589 static picture_t *vout_new_buffer( decoder_t *p_dec )
1590 {
1591     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1592     picture_t *p_pic;
1593
1594     if( p_owner->p_vout == NULL ||
1595         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
1596         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
1597         p_dec->fmt_out.video.i_chroma != p_owner->video.i_chroma ||
1598         p_dec->fmt_out.video.i_aspect != p_owner->video.i_aspect )
1599     {
1600         vout_thread_t *p_vout;
1601
1602         if( !p_dec->fmt_out.video.i_width ||
1603             !p_dec->fmt_out.video.i_height )
1604         {
1605             /* Can't create a new vout without display size */
1606             return NULL;
1607         }
1608
1609         if( !p_dec->fmt_out.video.i_visible_width ||
1610             !p_dec->fmt_out.video.i_visible_height )
1611         {
1612             if( p_dec->fmt_in.video.i_visible_width &&
1613                 p_dec->fmt_in.video.i_visible_height )
1614             {
1615                 p_dec->fmt_out.video.i_visible_width =
1616                     p_dec->fmt_in.video.i_visible_width;
1617                 p_dec->fmt_out.video.i_visible_height =
1618                     p_dec->fmt_in.video.i_visible_height;
1619             }
1620             else
1621             {
1622                 p_dec->fmt_out.video.i_visible_width =
1623                     p_dec->fmt_out.video.i_width;
1624                 p_dec->fmt_out.video.i_visible_height =
1625                     p_dec->fmt_out.video.i_height;
1626             }
1627         }
1628
1629         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
1630             var_CreateGetBool( p_dec, "hdtv-fix" ) )
1631         {
1632             p_dec->fmt_out.video.i_visible_height = 1080;
1633             p_dec->fmt_out.video.i_sar_num *= 135;
1634             p_dec->fmt_out.video.i_sar_den *= 136;
1635             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
1636         }
1637
1638         if( !p_dec->fmt_out.video.i_sar_num ||
1639             !p_dec->fmt_out.video.i_sar_den )
1640         {
1641             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
1642               p_dec->fmt_out.video.i_visible_height;
1643
1644             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
1645               p_dec->fmt_out.video.i_visible_width;
1646         }
1647
1648         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
1649                      &p_dec->fmt_out.video.i_sar_den,
1650                      p_dec->fmt_out.video.i_sar_num,
1651                      p_dec->fmt_out.video.i_sar_den, 50000 );
1652
1653         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1654         p_owner->video = p_dec->fmt_out.video;
1655
1656         vlc_mutex_lock( &p_owner->lock );
1657         p_vout = p_owner->p_vout;
1658         p_owner->p_vout = NULL;
1659         vlc_mutex_unlock( &p_owner->lock );
1660
1661         p_vout = vout_Request( p_dec, p_vout, &p_dec->fmt_out.video );
1662
1663         vlc_mutex_lock( &p_owner->lock );
1664         p_owner->p_vout = p_vout;
1665         vlc_mutex_unlock( &p_owner->lock );
1666
1667         var_SetBool( p_owner->p_input, "intf-change-vout", true );
1668         if( p_vout == NULL )
1669         {
1670             msg_Err( p_dec, "failed to create video output" );
1671             p_dec->b_error = true;
1672             return NULL;
1673         }
1674
1675         if( p_owner->video.i_rmask )
1676             p_owner->p_vout->render.i_rmask = p_owner->video.i_rmask;
1677         if( p_owner->video.i_gmask )
1678             p_owner->p_vout->render.i_gmask = p_owner->video.i_gmask;
1679         if( p_owner->video.i_bmask )
1680             p_owner->p_vout->render.i_bmask = p_owner->video.i_bmask;
1681     }
1682
1683     /* Get a new picture
1684      */
1685     for( p_pic = NULL; ; )
1686     {
1687         int i_pic, i_ready_pic;
1688
1689         if( p_dec->b_die || p_dec->b_error )
1690             return NULL;
1691
1692         /* The video filter chain required that there is always 1 free buffer
1693          * that it will use as temporary one. It will release the temporary
1694          * buffer once its work is done, so this check is safe even if we don't
1695          * lock around both count() and create().
1696          */
1697         if( vout_CountPictureAvailable( p_owner->p_vout ) >= 2 )
1698         {
1699             p_pic = vout_CreatePicture( p_owner->p_vout, 0, 0, 0 );
1700             if( p_pic )
1701                 break;
1702         }
1703
1704 #define p_pic p_owner->p_vout->render.pp_picture[i_pic]
1705         /* Check the decoder doesn't leak pictures */
1706         for( i_pic = 0, i_ready_pic = 0; i_pic < p_owner->p_vout->render.i_pictures; i_pic++ )
1707         {
1708             if( p_pic->i_status == READY_PICTURE )
1709             {
1710                 i_ready_pic++;
1711                 /* If we have at least 2 ready pictures, wait for the vout thread to
1712                  * process one */
1713                 if( i_ready_pic >= 2 )
1714                     break;
1715
1716                 continue;
1717             }
1718
1719             if( p_pic->i_status == DISPLAYED_PICTURE )
1720             {
1721                 /* If at least one displayed picture is not referenced
1722                  * let vout free it */
1723                 if( p_pic->i_refcount == 0 )
1724                     break;
1725             }
1726         }
1727         if( i_pic == p_owner->p_vout->render.i_pictures )
1728         {
1729             /* Too many pictures are still referenced, there is probably a bug
1730              * with the decoder */
1731             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1732
1733             /* Just free all the pictures */
1734             for( i_pic = 0; i_pic < p_owner->p_vout->render.i_pictures;
1735                  i_pic++ )
1736             {
1737                 if( p_pic->i_status == RESERVED_PICTURE )
1738                     vout_DestroyPicture( p_owner->p_vout, p_pic );
1739                 if( p_pic->i_refcount > 0 )
1740                 vout_UnlinkPicture( p_owner->p_vout, p_pic );
1741             }
1742         }
1743 #undef p_pic
1744
1745         msleep( VOUT_OUTMEM_SLEEP );
1746     }
1747
1748     return p_pic;
1749 }
1750
1751 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1752 {
1753     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1754 }
1755
1756 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1757 {
1758     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1759 }
1760
1761 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1762 {
1763     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1764 }
1765
1766 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1767 {
1768     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1769     vout_thread_t *p_vout = NULL;
1770     subpicture_t *p_subpic;
1771     int i_attempts = 30;
1772
1773     while( i_attempts-- )
1774     {
1775         if( p_dec->b_die || p_dec->b_error )
1776             break;
1777
1778         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1779         if( p_vout )
1780             break;
1781
1782         msleep( VOUT_DISPLAY_DELAY );
1783     }
1784
1785     if( !p_vout )
1786     {
1787         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1788         return NULL;
1789     }
1790
1791     if( p_owner->p_spu_vout != p_vout )
1792     {
1793         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1794                      &p_owner->i_spu_channel );
1795         p_owner->i_spu_order = 0;
1796         p_owner->p_spu_vout = p_vout;
1797     }
1798
1799     p_subpic = subpicture_New();
1800     if( p_subpic )
1801     {
1802         p_subpic->i_channel = p_owner->i_spu_channel;
1803         p_subpic->i_order = p_owner->i_spu_order++;
1804         p_subpic->b_subtitle = true;
1805     }
1806
1807     vlc_object_release( p_vout );
1808
1809     return p_subpic;
1810 }
1811
1812 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1813 {
1814     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1815     vout_thread_t *p_vout = NULL;
1816
1817     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1818     if( !p_vout || p_owner->p_spu_vout != p_vout )
1819     {
1820         if( p_vout )
1821             vlc_object_release( p_vout );
1822         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1823         return;
1824     }
1825
1826     subpicture_Delete( p_subpic );
1827
1828     vlc_object_release( p_vout );
1829 }
1830