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