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