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 VLC authors and VideoLAN
   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 it
  12  * under the terms of the GNU Lesser General Public License as published by
  13  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public License
  22  * along with this program; if not, write to the Free Software Foundation,
  23  * 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_spu.h>
  42 #include <vlc_meta.h>
  43 #include <vlc_dialog.h>
  44 #include <vlc_modules.h>
  45
  46 #include "audio_output/aout_internal.h"
  47 #include "stream_output/stream_output.h"
  48 #include "input_internal.h"
  49 #include "clock.h"
  50 #include "decoder.h"
  51 #include "event.h"
  52 #include "resource.h"
  53
  54 #include "../video_output/vout_control.h"
  55
  56 static decoder_t *CreateDecoder( vlc_object_t *, input_thread_t *,
  57                                  es_format_t *, bool, input_resource_t *,
  58                                  sout_instance_t *p_sout );
  59 static void       DeleteDecoder( decoder_t * );
  60
  61 static void      *DecoderThread( void * );
  62 static void       DecoderProcess( decoder_t *, block_t * );
  63 static void       DecoderOutputChangePause( decoder_t *, bool b_paused, mtime_t i_date );
  64 static void       DecoderFlush( decoder_t * );
  65 static void       DecoderSignalWait( decoder_t *, bool );
  66
  67 static void       DecoderUnsupportedCodec( decoder_t *, vlc_fourcc_t );
  68
  69 /* Buffers allocation callbacks for the decoders */
  70 static picture_t *vout_new_buffer( decoder_t * );
  71 static void vout_del_buffer( decoder_t *, picture_t * );
  72 static void vout_link_picture( decoder_t *, picture_t * );
  73 static void vout_unlink_picture( decoder_t *, picture_t * );
  74 static int aout_update_format( decoder_t * );
  75 static subpicture_t *spu_new_buffer( decoder_t *, const subpicture_updater_t * );
  76 static void spu_del_buffer( decoder_t *, subpicture_t * );
  77
  78 struct decoder_owner_sys_t
  79 {
  80     int64_t         i_preroll_end;
  81
  82     input_thread_t  *p_input;
  83     input_resource_t*p_resource;
  84     input_clock_t   *p_clock;
  85     int             i_last_rate;
  86
  87     vout_thread_t   *p_spu_vout;
  88     int              i_spu_channel;
  89     int64_t          i_spu_order;
  90
  91     sout_instance_t         *p_sout;
  92     sout_packetizer_input_t *p_sout_input;
  93
  94     vlc_thread_t     thread;
  95
  96     /* Some decoders require already packetized data (ie. not truncated) */
  97     decoder_t *p_packetizer;
  98     bool b_packetizer;
  99
 100     /* Current format in use by the output */
 101     video_format_t video;
 102     audio_format_t audio;
 103     es_format_t    sout;
 104
 105     /* */
 106     bool           b_fmt_description;
 107     es_format_t    fmt_description;
 108     vlc_meta_t     *p_description;
 109
 110     /* fifo */
 111     block_fifo_t *p_fifo;
 112
 113     /* Lock for communication with decoder thread */
 114     vlc_mutex_t lock;
 115     vlc_cond_t  wait_request;
 116     vlc_cond_t  wait_acknowledge;
 117
 118     /* -- These variables need locking on write(only) -- */
 119     audio_output_t *p_aout;
 120
 121     vout_thread_t   *p_vout;
 122
 123     /* -- Theses variables need locking on read *and* write -- */
 124     bool b_exit;
 125
 126     /* Pause */
 127     bool b_paused;
 128     struct
 129     {
 130         mtime_t i_date;
 131         int     i_ignore;
 132     } pause;
 133
 134     /* Waiting */
 135     bool b_waiting;
 136     bool b_first;
 137     bool b_has_data;
 138
 139     /* Flushing */
 140     bool b_flushing;
 141
 142     /* CC */
 143     struct
 144     {
 145         bool b_supported;
 146         bool pb_present[4];
 147         decoder_t *pp_decoder[4];
 148     } cc;
 149
 150     /* Delay */
 151     mtime_t i_ts_delay;
 152 };
 153
 154 /* Pictures which are DECODER_BOGUS_VIDEO_DELAY or more in advance probably have
 155  * a bogus PTS and won't be displayed */
 156 #define DECODER_BOGUS_VIDEO_DELAY                ((mtime_t)(DEFAULT_PTS_DELAY * 30))
 157
 158 /* */
 159 #define DECODER_SPU_VOUT_WAIT_DURATION ((int)(0.200*CLOCK_FREQ))
 160
 161
 162 /*****************************************************************************
 163  * Public functions
 164  *****************************************************************************/
 165 picture_t *decoder_NewPicture( decoder_t *p_decoder )
 166 {
 167     picture_t *p_picture = p_decoder->pf_vout_buffer_new( p_decoder );
 168     if( !p_picture )
 169         msg_Warn( p_decoder, "can't get output picture" );
 170     return p_picture;
 171 }
 172 void decoder_DeletePicture( decoder_t *p_decoder, picture_t *p_picture )
 173 {
 174     p_decoder->pf_vout_buffer_del( p_decoder, p_picture );
 175 }
 176 void decoder_LinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 177 {
 178     p_decoder->pf_picture_link( p_decoder, p_picture );
 179 }
 180 void decoder_UnlinkPicture( decoder_t *p_decoder, picture_t *p_picture )
 181 {
 182     p_decoder->pf_picture_unlink( p_decoder, p_picture );
 183 }
 184
 185 block_t *decoder_NewAudioBuffer( decoder_t *dec, int samples )
 186 {
 187     if( decoder_UpdateAudioFormat( dec ) )
 188         return NULL;
 189
 190     size_t length = samples * dec->fmt_out.audio.i_bytes_per_frame
 191                             / dec->fmt_out.audio.i_frame_length;
 192     block_t *block = block_Alloc( length );
 193     if( likely(block != NULL) )
 194     {
 195         block->i_nb_samples = samples;
 196         block->i_pts = block->i_length = 0;
 197     }
 198     return block;
 199 }
 200
 201 subpicture_t *decoder_NewSubpicture( decoder_t *p_decoder,
 202                                      const subpicture_updater_t *p_dyn )
 203 {
 204     subpicture_t *p_subpicture = p_decoder->pf_spu_buffer_new( p_decoder, p_dyn );
 205     if( !p_subpicture )
 206         msg_Warn( p_decoder, "can't get output subpicture" );
 207     return p_subpicture;
 208 }
 209
 210 void decoder_DeleteSubpicture( decoder_t *p_decoder, subpicture_t *p_subpicture )
 211 {
 212     p_decoder->pf_spu_buffer_del( p_decoder, p_subpicture );
 213 }
 214
 215 /* decoder_GetInputAttachments:
 216  */
 217 int decoder_GetInputAttachments( decoder_t *p_dec,
 218                                  input_attachment_t ***ppp_attachment,
 219                                  int *pi_attachment )
 220 {
 221     if( !p_dec->pf_get_attachments )
 222         return VLC_EGENERIC;
 223
 224     return p_dec->pf_get_attachments( p_dec, ppp_attachment, pi_attachment );
 225 }
 226 /* decoder_GetDisplayDate:
 227  */
 228 mtime_t decoder_GetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 229 {
 230     if( !p_dec->pf_get_display_date )
 231         return VLC_TS_INVALID;
 232
 233     return p_dec->pf_get_display_date( p_dec, i_ts );
 234 }
 235 /* decoder_GetDisplayRate:
 236  */
 237 int decoder_GetDisplayRate( decoder_t *p_dec )
 238 {
 239     if( !p_dec->pf_get_display_rate )
 240         return INPUT_RATE_DEFAULT;
 241
 242     return p_dec->pf_get_display_rate( p_dec );
 243 }
 244
 245 /* TODO: pass p_sout through p_resource? -- Courmisch */
 246 static decoder_t *decoder_New( vlc_object_t *p_parent, input_thread_t *p_input,
 247                                es_format_t *fmt, input_clock_t *p_clock,
 248                                input_resource_t *p_resource,
 249                                sout_instance_t *p_sout  )
 250 {
 251     decoder_t *p_dec = NULL;
 252     const char *psz_type = p_sout ? N_("packetizer") : N_("decoder");
 253     int i_priority;
 254
 255     /* Create the decoder configuration structure */
 256     p_dec = CreateDecoder( p_parent, p_input, fmt,
 257                            p_sout != NULL, p_resource, p_sout );
 258     if( p_dec == NULL )
 259     {
 260         msg_Err( p_parent, "could not create %s", psz_type );
 261         dialog_Fatal( p_parent, _("Streaming / Transcoding failed"),
 262                       _("VLC could not open the %s module."),
 263                       vlc_gettext( psz_type ) );
 264         return NULL;
 265     }
 266
 267     if( !p_dec->p_module )
 268     {
 269         DecoderUnsupportedCodec( p_dec, fmt->i_codec );
 270
 271         DeleteDecoder( p_dec );
 272         return NULL;
 273     }
 274
 275     p_dec->p_owner->p_clock = p_clock;
 276     assert( p_dec->fmt_out.i_cat != UNKNOWN_ES );
 277
 278     if( p_dec->fmt_out.i_cat == AUDIO_ES )
 279         i_priority = VLC_THREAD_PRIORITY_AUDIO;
 280     else
 281         i_priority = VLC_THREAD_PRIORITY_VIDEO;
 282
 283     /* Spawn the decoder thread */
 284     if( vlc_clone( &p_dec->p_owner->thread, DecoderThread, p_dec, i_priority ) )
 285     {
 286         msg_Err( p_dec, "cannot spawn decoder thread" );
 287         module_unneed( p_dec, p_dec->p_module );
 288         DeleteDecoder( p_dec );
 289         return NULL;
 290     }
 291
 292     return p_dec;
 293 }
 294
 295
 296 /**
 297  * Spawns a new decoder thread from the input thread
 298  *
 299  * \param p_input the input thread
 300  * \param p_es the es descriptor
 301  * \return the spawned decoder object
 302  */
 303 decoder_t *input_DecoderNew( input_thread_t *p_input,
 304                              es_format_t *fmt, input_clock_t *p_clock,
 305                              sout_instance_t *p_sout  )
 306 {
 307     return decoder_New( VLC_OBJECT(p_input), p_input, fmt, p_clock,
 308                         p_input->p->p_resource, p_sout );
 309 }
 310
 311 /**
 312  * Spawn a decoder thread outside of the input thread.
 313  */
 314 decoder_t *input_DecoderCreate( vlc_object_t *p_parent, es_format_t *fmt,
 315                                 input_resource_t *p_resource )
 316 {
 317     return decoder_New( p_parent, NULL, fmt, NULL, p_resource, NULL );
 318 }
 319
 320
 321 /**
 322  * Kills a decoder thread and waits until it's finished
 323  *
 324  * \param p_input the input thread
 325  * \param p_es the es descriptor
 326  * \return nothing
 327  */
 328 void input_DecoderDelete( decoder_t *p_dec )
 329 {
 330     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 331
 332     vlc_cancel( p_owner->thread );
 333
 334     /* Make sure we aren't paused/waiting/decoding anymore */
 335     vlc_mutex_lock( &p_owner->lock );
 336     const bool b_was_paused = p_owner->b_paused;
 337     p_owner->b_paused = false;
 338     p_owner->b_waiting = false;
 339     p_owner->b_flushing = true;
 340     p_owner->b_exit = true;
 341     vlc_cond_signal( &p_owner->wait_request );
 342     vlc_mutex_unlock( &p_owner->lock );
 343
 344     vlc_join( p_owner->thread, NULL );
 345     p_owner->b_paused = b_was_paused;
 346
 347     module_unneed( p_dec, p_dec->p_module );
 348
 349     /* */
 350     if( p_dec->p_owner->cc.b_supported )
 351     {
 352         int i;
 353         for( i = 0; i < 4; i++ )
 354             input_DecoderSetCcState( p_dec, false, i );
 355     }
 356
 357     /* Delete decoder */
 358     DeleteDecoder( p_dec );
 359 }
 360
 361 /**
 362  * Put a block_t in the decoder's fifo.
 363  * Thread-safe w.r.t. the decoder. May be a cancellation point.
 364  *
 365  * \param p_dec the decoder object
 366  * \param p_block the data block
 367  */
 368 void input_DecoderDecode( decoder_t *p_dec, block_t *p_block, bool b_do_pace )
 369 {
 370     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 371
 372     if( b_do_pace )
 373     {
 374         /* The fifo is not consumed when waiting and so will
 375          * deadlock vlc.
 376          * There is no need to lock as b_waiting is never modified
 377          * inside decoder thread. */
 378         if( !p_owner->b_waiting )
 379             block_FifoPace( p_owner->p_fifo, 10, SIZE_MAX );
 380     }
 381 #ifdef __arm__
 382     else if( block_FifoSize( p_owner->p_fifo ) > 50*1024*1024 /* 50 MiB */ )
 383 #else
 384     else if( block_FifoSize( p_owner->p_fifo ) > 400*1024*1024 /* 400 MiB, ie ~ 50mb/s for 60s */ )
 385 #endif
 386     {
 387         /* FIXME: ideally we would check the time amount of data
 388          * in the FIFO instead of its size. */
 389         msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 390                   "consumed quickly enough), resetting fifo!" );
 391         block_FifoEmpty( p_owner->p_fifo );
 392     }
 393
 394     block_FifoPut( p_owner->p_fifo, p_block );
 395 }
 396
 397 bool input_DecoderIsEmpty( decoder_t * p_dec )
 398 {
 399     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 400     assert( !p_owner->b_waiting );
 401
 402     bool b_empty = block_FifoCount( p_dec->p_owner->p_fifo ) <= 0;
 403
 404     if( b_empty )
 405     {
 406         vlc_mutex_lock( &p_owner->lock );
 407         /* TODO subtitles support */
 408         if( p_dec->fmt_out.i_cat == VIDEO_ES && p_owner->p_vout )
 409             b_empty = vout_IsEmpty( p_owner->p_vout );
 410         else if( p_dec->fmt_out.i_cat == AUDIO_ES && p_owner->p_aout )
 411             b_empty = aout_DecIsEmpty( p_owner->p_aout );
 412         vlc_mutex_unlock( &p_owner->lock );
 413     }
 414     return b_empty;
 415 }
 416
 417 void input_DecoderIsCcPresent( decoder_t *p_dec, bool pb_present[4] )
 418 {
 419     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 420     int i;
 421
 422     vlc_mutex_lock( &p_owner->lock );
 423     for( i = 0; i < 4; i++ )
 424         pb_present[i] =  p_owner->cc.pb_present[i];
 425     vlc_mutex_unlock( &p_owner->lock );
 426 }
 427 int input_DecoderSetCcState( decoder_t *p_dec, bool b_decode, int i_channel )
 428 {
 429     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 430
 431     //msg_Warn( p_dec, "input_DecoderSetCcState: %d @%d", b_decode, i_channel );
 432
 433     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 434         return VLC_EGENERIC;
 435
 436     if( b_decode )
 437     {
 438         static const vlc_fourcc_t fcc[4] = {
 439             VLC_FOURCC('c', 'c', '1', ' '),
 440             VLC_FOURCC('c', 'c', '2', ' '),
 441             VLC_FOURCC('c', 'c', '3', ' '),
 442             VLC_FOURCC('c', 'c', '4', ' '),
 443         };
 444         decoder_t *p_cc;
 445         es_format_t fmt;
 446
 447         es_format_Init( &fmt, SPU_ES, fcc[i_channel] );
 448         p_cc = input_DecoderNew( p_owner->p_input, &fmt,
 449                               p_dec->p_owner->p_clock, p_owner->p_sout );
 450         if( !p_cc )
 451         {
 452             msg_Err( p_dec, "could not create decoder" );
 453             dialog_Fatal( p_dec, _("Streaming / Transcoding failed"), "%s",
 454                           _("VLC could not open the decoder module.") );
 455             return VLC_EGENERIC;
 456         }
 457         else if( !p_cc->p_module )
 458         {
 459             DecoderUnsupportedCodec( p_dec, fcc[i_channel] );
 460             input_DecoderDelete(p_cc);
 461             return VLC_EGENERIC;
 462         }
 463         p_cc->p_owner->p_clock = p_owner->p_clock;
 464
 465         vlc_mutex_lock( &p_owner->lock );
 466         p_owner->cc.pp_decoder[i_channel] = p_cc;
 467         vlc_mutex_unlock( &p_owner->lock );
 468     }
 469     else
 470     {
 471         decoder_t *p_cc;
 472
 473         vlc_mutex_lock( &p_owner->lock );
 474         p_cc = p_owner->cc.pp_decoder[i_channel];
 475         p_owner->cc.pp_decoder[i_channel] = NULL;
 476         vlc_mutex_unlock( &p_owner->lock );
 477
 478         if( p_cc )
 479             input_DecoderDelete(p_cc);
 480     }
 481     return VLC_SUCCESS;
 482 }
 483 int input_DecoderGetCcState( decoder_t *p_dec, bool *pb_decode, int i_channel )
 484 {
 485     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 486
 487     *pb_decode = false;
 488     if( i_channel < 0 || i_channel >= 4 || !p_owner->cc.pb_present[i_channel] )
 489         return VLC_EGENERIC;
 490
 491     vlc_mutex_lock( &p_owner->lock );
 492     *pb_decode = p_owner->cc.pp_decoder[i_channel] != NULL;
 493     vlc_mutex_unlock( &p_owner->lock );
 494     return VLC_EGENERIC;
 495 }
 496
 497 void input_DecoderChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
 498 {
 499     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 500
 501     vlc_mutex_lock( &p_owner->lock );
 502     /* Normally, p_owner->b_paused != b_paused here. But if a track is added
 503      * while the input is paused (e.g. add sub file), then b_paused is
 504      * (incorrectly) false. */
 505     if( likely(p_owner->b_paused != b_paused) ) {
 506         p_owner->b_paused = b_paused;
 507         p_owner->pause.i_date = i_date;
 508         p_owner->pause.i_ignore = 0;
 509         vlc_cond_signal( &p_owner->wait_request );
 510
 511         DecoderOutputChangePause( p_dec, b_paused, i_date );
 512     }
 513     vlc_mutex_unlock( &p_owner->lock );
 514 }
 515
 516 void input_DecoderChangeDelay( decoder_t *p_dec, mtime_t i_delay )
 517 {
 518     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 519
 520     vlc_mutex_lock( &p_owner->lock );
 521     p_owner->i_ts_delay = i_delay;
 522     vlc_mutex_unlock( &p_owner->lock );
 523 }
 524
 525 void input_DecoderStartWait( decoder_t *p_dec )
 526 {
 527     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 528
 529     vlc_mutex_lock( &p_owner->lock );
 530
 531     DecoderFlush( p_dec );
 532
 533     p_owner->b_first = true;
 534     p_owner->b_has_data = false;
 535
 536     p_owner->b_waiting = true;
 537
 538     vlc_cond_signal( &p_owner->wait_request );
 539
 540     vlc_mutex_unlock( &p_owner->lock );
 541 }
 542
 543 void input_DecoderStopWait( decoder_t *p_dec )
 544 {
 545     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 546
 547     vlc_mutex_lock( &p_owner->lock );
 548
 549     p_owner->b_waiting = false;
 550
 551     vlc_cond_signal( &p_owner->wait_request );
 552
 553     vlc_mutex_unlock( &p_owner->lock );
 554 }
 555
 556 void input_DecoderWait( decoder_t *p_dec )
 557 {
 558     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 559
 560     vlc_mutex_lock( &p_owner->lock );
 561
 562     while( p_owner->b_waiting && !p_owner->b_has_data )
 563     {
 564         block_FifoWake( p_owner->p_fifo );
 565         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
 566     }
 567
 568     vlc_mutex_unlock( &p_owner->lock );
 569 }
 570
 571 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration )
 572 {
 573     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 574
 575     *pi_duration = 0;
 576
 577     vlc_mutex_lock( &p_owner->lock );
 578     if( p_dec->fmt_out.i_cat == VIDEO_ES )
 579     {
 580         if( p_owner->b_paused && p_owner->p_vout )
 581         {
 582             vout_NextPicture( p_owner->p_vout, pi_duration );
 583             p_owner->pause.i_ignore++;
 584             vlc_cond_signal( &p_owner->wait_request );
 585         }
 586     }
 587     else
 588     {
 589         /* TODO subtitle should not be flushed */
 590         DecoderFlush( p_dec );
 591     }
 592     vlc_mutex_unlock( &p_owner->lock );
 593 }
 594
 595 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta )
 596 {
 597     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 598     bool b_changed;
 599
 600     vlc_mutex_lock( &p_owner->lock );
 601     b_changed = p_owner->b_fmt_description;
 602     if( b_changed )
 603     {
 604         if( p_fmt )
 605             es_format_Copy( p_fmt, &p_owner->fmt_description );
 606
 607         if( pp_meta )
 608         {
 609             *pp_meta = NULL;
 610             if( p_owner->p_description )
 611             {
 612                 *pp_meta = vlc_meta_New();
 613                 if( *pp_meta )
 614                     vlc_meta_Merge( *pp_meta, p_owner->p_description );
 615             }
 616         }
 617         p_owner->b_fmt_description = false;
 618     }
 619     vlc_mutex_unlock( &p_owner->lock );
 620     return b_changed;
 621 }
 622
 623 size_t input_DecoderGetFifoSize( decoder_t *p_dec )
 624 {
 625     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 626
 627     return block_FifoSize( p_owner->p_fifo );
 628 }
 629
 630 void input_DecoderGetObjects( decoder_t *p_dec,
 631                               vout_thread_t **pp_vout, audio_output_t **pp_aout )
 632 {
 633     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 634
 635     vlc_mutex_lock( &p_owner->lock );
 636     if( pp_vout )
 637         *pp_vout = p_owner->p_vout ? vlc_object_hold( p_owner->p_vout ) : NULL;
 638     if( pp_aout )
 639         *pp_aout = p_owner->p_aout ? vlc_object_hold( p_owner->p_aout ) : NULL;
 640     vlc_mutex_unlock( &p_owner->lock );
 641 }
 642
 643 /*****************************************************************************
 644  * Internal functions
 645  *****************************************************************************/
 646 static int DecoderGetInputAttachments( decoder_t *p_dec,
 647                                        input_attachment_t ***ppp_attachment,
 648                                        int *pi_attachment )
 649 {
 650     input_thread_t *p_input = p_dec->p_owner->p_input;
 651
 652     if( unlikely(p_input == NULL) )
 653         return VLC_ENOOBJ;
 654     return input_Control( p_input, INPUT_GET_ATTACHMENTS,
 655                           ppp_attachment, pi_attachment );
 656 }
 657 static mtime_t DecoderGetDisplayDate( decoder_t *p_dec, mtime_t i_ts )
 658 {
 659     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 660
 661     vlc_mutex_lock( &p_owner->lock );
 662     if( p_owner->b_waiting || p_owner->b_paused )
 663         i_ts = VLC_TS_INVALID;
 664     vlc_mutex_unlock( &p_owner->lock );
 665
 666     if( !p_owner->p_clock || i_ts <= VLC_TS_INVALID )
 667         return i_ts;
 668
 669     if( input_clock_ConvertTS( p_owner->p_clock, NULL, &i_ts, NULL, INT64_MAX ) )
 670         return VLC_TS_INVALID;
 671
 672     return i_ts;
 673 }
 674 static int DecoderGetDisplayRate( decoder_t *p_dec )
 675 {
 676     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 677
 678     if( !p_owner->p_clock )
 679         return INPUT_RATE_DEFAULT;
 680     return input_clock_GetRate( p_owner->p_clock );
 681 }
 682
 683 /* */
 684 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 685 {
 686     if (codec != VLC_FOURCC('u','n','d','f')) {
 687         const char *desc = vlc_fourcc_GetDescription(p_dec->fmt_in.i_cat, codec);
 688         if (!desc || !*desc)
 689             desc = N_("No description for this codec");
 690         msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s' (%s). "
 691                 "VLC probably does not support this sound or video format.",
 692                 (char*)&codec, desc );
 693         dialog_Fatal( p_dec, _("No suitable decoder module"),
 694                 _("VLC does not support the audio or video format \"%4.4s\" (%s). "
 695                     "Unfortunately there is no way for you to fix this."),
 696                 (char*)&codec, desc );
 697     } else {
 698         msg_Err( p_dec, "could not identify codec" );
 699         dialog_Fatal( p_dec, _("Unidentified codec"),
 700             _("VLC could not identify the audio or video codec" ) );
 701     }
 702 }
 703
 704
 705 /**
 706  * Create a decoder object
 707  *
 708  * \param p_input the input thread
 709  * \param p_es the es descriptor
 710  * \param b_packetizer instead of a decoder
 711  * \return the decoder object
 712  */
 713 static decoder_t * CreateDecoder( vlc_object_t *p_parent,
 714                                   input_thread_t *p_input,
 715                                   es_format_t *fmt, bool b_packetizer,
 716                                   input_resource_t *p_resource,
 717                                   sout_instance_t *p_sout )
 718 {
 719     decoder_t *p_dec;
 720     decoder_owner_sys_t *p_owner;
 721     es_format_t null_es_format;
 722
 723     p_dec = vlc_custom_create( p_parent, sizeof( *p_dec ), "decoder" );
 724     if( p_dec == NULL )
 725         return NULL;
 726
 727     p_dec->pf_decode_audio = NULL;
 728     p_dec->pf_decode_video = NULL;
 729     p_dec->pf_decode_sub = NULL;
 730     p_dec->pf_get_cc = NULL;
 731     p_dec->pf_packetize = NULL;
 732
 733     /* Initialize the decoder */
 734     p_dec->p_module = NULL;
 735
 736     memset( &null_es_format, 0, sizeof(es_format_t) );
 737     es_format_Copy( &p_dec->fmt_in, fmt );
 738     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 739
 740     p_dec->p_description = NULL;
 741
 742     /* Allocate our private structure for the decoder */
 743     p_dec->p_owner = p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 744     if( unlikely(p_owner == NULL) )
 745     {
 746         vlc_object_release( p_dec );
 747         return NULL;
 748     }
 749     p_owner->i_preroll_end = VLC_TS_INVALID;
 750     p_owner->i_last_rate = INPUT_RATE_DEFAULT;
 751     p_owner->p_input = p_input;
 752     p_owner->p_resource = p_resource;
 753     p_owner->p_aout = NULL;
 754     p_owner->p_vout = NULL;
 755     p_owner->p_spu_vout = NULL;
 756     p_owner->i_spu_channel = 0;
 757     p_owner->i_spu_order = 0;
 758     p_owner->p_sout = p_sout;
 759     p_owner->p_sout_input = NULL;
 760     p_owner->p_packetizer = NULL;
 761     p_owner->b_packetizer = b_packetizer;
 762
 763     /* decoder fifo */
 764     p_owner->p_fifo = block_FifoNew();
 765     if( unlikely(p_owner->p_fifo == NULL) )
 766     {
 767         free( p_owner );
 768         vlc_object_release( p_dec );
 769         return NULL;
 770     }
 771
 772     /* Set buffers allocation callbacks for the decoders */
 773     p_dec->pf_aout_format_update = aout_update_format;
 774     p_dec->pf_vout_buffer_new = vout_new_buffer;
 775     p_dec->pf_vout_buffer_del = vout_del_buffer;
 776     p_dec->pf_picture_link    = vout_link_picture;
 777     p_dec->pf_picture_unlink  = vout_unlink_picture;
 778     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 779     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 780     /* */
 781     p_dec->pf_get_attachments  = DecoderGetInputAttachments;
 782     p_dec->pf_get_display_date = DecoderGetDisplayDate;
 783     p_dec->pf_get_display_rate = DecoderGetDisplayRate;
 784
 785     /* Find a suitable decoder/packetizer module */
 786     if( !b_packetizer )
 787         p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
 788     else
 789         p_dec->p_module = module_need( p_dec, "packetizer", "$packetizer", false );
 790
 791     /* Check if decoder requires already packetized data */
 792     if( !b_packetizer &&
 793         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 794     {
 795         p_owner->p_packetizer =
 796             vlc_custom_create( p_parent, sizeof( decoder_t ), "packetizer" );
 797         if( p_owner->p_packetizer )
 798         {
 799             es_format_Copy( &p_owner->p_packetizer->fmt_in,
 800                             &p_dec->fmt_in );
 801
 802             es_format_Copy( &p_owner->p_packetizer->fmt_out,
 803                             &null_es_format );
 804
 805             p_owner->p_packetizer->p_module =
 806                 module_need( p_owner->p_packetizer,
 807                              "packetizer", "$packetizer", false );
 808
 809             if( !p_owner->p_packetizer->p_module )
 810             {
 811                 es_format_Clean( &p_owner->p_packetizer->fmt_in );
 812                 vlc_object_release( p_owner->p_packetizer );
 813             }
 814         }
 815     }
 816
 817     /* Copy ourself the input replay gain */
 818     if( fmt->i_cat == AUDIO_ES )
 819     {
 820         for( unsigned i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 821         {
 822             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 823             {
 824                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 825                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 826             }
 827             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 828             {
 829                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 830                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 831             }
 832         }
 833     }
 834
 835     /* */
 836     vlc_mutex_init( &p_owner->lock );
 837     vlc_cond_init( &p_owner->wait_request );
 838     vlc_cond_init( &p_owner->wait_acknowledge );
 839
 840     p_owner->b_fmt_description = false;
 841     es_format_Init( &p_owner->fmt_description, UNKNOWN_ES, 0 );
 842     p_owner->p_description = NULL;
 843
 844     p_owner->b_exit = false;
 845
 846     p_owner->b_paused = false;
 847     p_owner->pause.i_date = VLC_TS_INVALID;
 848     p_owner->pause.i_ignore = 0;
 849
 850     p_owner->b_waiting = false;
 851     p_owner->b_first = true;
 852     p_owner->b_has_data = false;
 853
 854     p_owner->b_flushing = false;
 855
 856     /* */
 857     p_owner->cc.b_supported = false;
 858     if( !b_packetizer )
 859     {
 860         if( p_owner->p_packetizer && p_owner->p_packetizer->pf_get_cc )
 861             p_owner->cc.b_supported = true;
 862         if( p_dec->pf_get_cc )
 863             p_owner->cc.b_supported = true;
 864     }
 865
 866     for( unsigned i = 0; i < 4; i++ )
 867     {
 868         p_owner->cc.pb_present[i] = false;
 869         p_owner->cc.pp_decoder[i] = NULL;
 870     }
 871     p_owner->i_ts_delay = 0;
 872     return p_dec;
 873 }
 874
 875 /**
 876  * The decoding main loop
 877  *
 878  * \param p_dec the decoder
 879  */
 880 static void *DecoderThread( void *p_data )
 881 {
 882     decoder_t *p_dec = (decoder_t *)p_data;
 883     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 884
 885     /* The decoder's main loop */
 886     for( ;; )
 887     {
 888         block_t *p_block = block_FifoGet( p_owner->p_fifo );
 889
 890         /* Make sure there is no cancellation point other than this one^^.
 891          * If you need one, be sure to push cleanup of p_block. */
 892         bool end_wait = !p_block || p_block->i_flags & BLOCK_FLAG_CORE_EOS;
 893         DecoderSignalWait( p_dec, end_wait );
 894         if (end_wait)
 895             input_DecoderStopWait( p_dec );
 896
 897         if( p_block )
 898         {
 899             int canc = vlc_savecancel();
 900
 901             if( p_block->i_flags & BLOCK_FLAG_CORE_EOS )
 902             {
 903                 /* calling DecoderProcess() with NULL block will make
 904                  * decoders/packetizers flush their buffers */
 905                 block_Release( p_block );
 906                 p_block = NULL;
 907             }
 908
 909             DecoderProcess( p_dec, p_block );
 910
 911             vlc_restorecancel( canc );
 912         }
 913     }
 914     return NULL;
 915 }
 916
 917 static block_t *DecoderBlockFlushNew()
 918 {
 919     block_t *p_null = block_Alloc( 128 );
 920     if( !p_null )
 921         return NULL;
 922
 923     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY |
 924                        BLOCK_FLAG_CORRUPTED |
 925                        BLOCK_FLAG_CORE_FLUSH;
 926     memset( p_null->p_buffer, 0, p_null->i_buffer );
 927
 928     return p_null;
 929 }
 930
 931 static void DecoderFlush( decoder_t *p_dec )
 932 {
 933     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 934
 935     vlc_assert_locked( &p_owner->lock );
 936
 937     /* Empty the fifo */
 938     block_FifoEmpty( p_owner->p_fifo );
 939
 940     /* Monitor for flush end */
 941     p_owner->b_flushing = true;
 942     vlc_cond_signal( &p_owner->wait_request );
 943
 944     /* Send a special block */
 945     block_t *p_null = DecoderBlockFlushNew();
 946     if( !p_null )
 947         return;
 948     input_DecoderDecode( p_dec, p_null, false );
 949
 950     /* */
 951     while( p_owner->b_flushing )
 952         vlc_cond_wait( &p_owner->wait_acknowledge, &p_owner->lock );
 953 }
 954
 955 static void DecoderSignalWait( decoder_t *p_dec, bool b_has_data )
 956 {
 957     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 958
 959     vlc_mutex_lock( &p_owner->lock );
 960
 961     if( p_owner->b_waiting )
 962     {
 963         if( b_has_data )
 964             p_owner->b_has_data = true;
 965         vlc_cond_signal( &p_owner->wait_acknowledge );
 966     }
 967
 968     vlc_mutex_unlock( &p_owner->lock );
 969 }
 970
 971 static bool DecoderIsFlushing( decoder_t *p_dec )
 972 {
 973     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 974     bool b_flushing;
 975
 976     vlc_mutex_lock( &p_owner->lock );
 977
 978     b_flushing = p_owner->b_flushing;
 979
 980     vlc_mutex_unlock( &p_owner->lock );
 981
 982     return b_flushing;
 983 }
 984
 985 static bool DecoderWaitUnblock( decoder_t *p_dec )
 986 {
 987     decoder_owner_sys_t *p_owner = p_dec->p_owner;
 988
 989     vlc_assert_locked( &p_owner->lock );
 990
 991     for( ;; )
 992     {
 993         if( p_owner->b_flushing )
 994             break;
 995         if( p_owner->b_paused )
 996         {
 997             if( p_owner->b_waiting && !p_owner->b_has_data )
 998                 break;
 999             if( p_owner->pause.i_ignore > 0 )
1000             {
1001                 p_owner->pause.i_ignore--;
1002                 break;
1003             }
1004         }
1005         else
1006         {
1007             if( !p_owner->b_waiting || !p_owner->b_has_data )
1008                 break;
1009         }
1010         vlc_cond_wait( &p_owner->wait_request, &p_owner->lock );
1011     }
1012
1013     return p_owner->b_flushing;
1014 }
1015
1016 static void DecoderOutputChangePause( decoder_t *p_dec, bool b_paused, mtime_t i_date )
1017 {
1018     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1019
1020     vlc_assert_locked( &p_owner->lock );
1021
1022     /* XXX only audio and video output have to be paused.
1023      * - for sout it is useless
1024      * - for subs, it is done by the vout
1025      */
1026     if( p_dec->fmt_out.i_cat == AUDIO_ES )
1027     {
1028         if( p_owner->p_aout )
1029             aout_DecChangePause( p_owner->p_aout, b_paused, i_date );
1030     }
1031     else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1032     {
1033         if( p_owner->p_vout )
1034             vout_ChangePause( p_owner->p_vout, b_paused, i_date );
1035     }
1036 }
1037 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
1038 {
1039     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
1040         *pi_preroll = INT64_MAX;
1041     else if( p->i_dts > VLC_TS_INVALID )
1042         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
1043     else if( p->i_pts > VLC_TS_INVALID )
1044         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
1045 }
1046
1047 static void DecoderFixTs( decoder_t *p_dec, mtime_t *pi_ts0, mtime_t *pi_ts1,
1048                           mtime_t *pi_duration, int *pi_rate, mtime_t i_ts_bound )
1049 {
1050     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1051     input_clock_t   *p_clock = p_owner->p_clock;
1052
1053     vlc_assert_locked( &p_owner->lock );
1054
1055     const mtime_t i_es_delay = p_owner->i_ts_delay;
1056
1057     if( !p_clock )
1058         return;
1059
1060     const bool b_ephemere = pi_ts1 && *pi_ts0 == *pi_ts1;
1061     int i_rate;
1062
1063     if( *pi_ts0 > VLC_TS_INVALID )
1064     {
1065         *pi_ts0 += i_es_delay;
1066         if( pi_ts1 && *pi_ts1 > VLC_TS_INVALID )
1067             *pi_ts1 += i_es_delay;
1068         if( input_clock_ConvertTS( p_clock, &i_rate, pi_ts0, pi_ts1, i_ts_bound ) )
1069             *pi_ts0 = VLC_TS_INVALID;
1070     }
1071     else
1072     {
1073         i_rate = input_clock_GetRate( p_clock );
1074     }
1075
1076     /* Do not create ephemere data because of rounding errors */
1077     if( !b_ephemere && pi_ts1 && *pi_ts0 == *pi_ts1 )
1078         *pi_ts1 += 1;
1079
1080     if( pi_duration )
1081         *pi_duration = ( *pi_duration * i_rate + INPUT_RATE_DEFAULT-1 )
1082             / INPUT_RATE_DEFAULT;
1083
1084     if( pi_rate )
1085         *pi_rate = i_rate;
1086 }
1087
1088 static bool DecoderIsExitRequested( decoder_t *p_dec )
1089 {
1090     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1091
1092     vlc_mutex_lock( &p_owner->lock );
1093     bool b_exit = p_owner->b_exit;
1094     vlc_mutex_unlock( &p_owner->lock );
1095
1096     return b_exit;
1097 }
1098
1099 /**
1100  * If *pb_reject, it does nothing, otherwise it waits for the given
1101  * deadline or a flush request (in which case it set *pi_reject to true.
1102  */
1103 static void DecoderWaitDate( decoder_t *p_dec,
1104                              bool *pb_reject, mtime_t i_deadline )
1105 {
1106     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1107
1108     vlc_assert_locked( &p_owner->lock );
1109
1110     if( *pb_reject || i_deadline < 0 )
1111         return;
1112
1113     do
1114     {
1115         if( p_owner->b_flushing || p_owner->b_exit )
1116         {
1117             *pb_reject = true;
1118             break;
1119         }
1120     }
1121     while( vlc_cond_timedwait( &p_owner->wait_request, &p_owner->lock,
1122                                i_deadline ) == 0 );
1123 }
1124
1125 static void DecoderPlayAudio( decoder_t *p_dec, block_t *p_audio,
1126                               int *pi_played_sum, int *pi_lost_sum )
1127 {
1128     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1129     audio_output_t *p_aout = p_owner->p_aout;
1130
1131     /* */
1132     if( p_audio && p_audio->i_pts <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify audio_output/*
1133     {
1134         msg_Warn( p_dec, "non-dated audio buffer received" );
1135         *pi_lost_sum += 1;
1136         block_Release( p_audio );
1137         return;
1138     }
1139
1140     /* */
1141     vlc_mutex_lock( &p_owner->lock );
1142
1143     if( p_audio && p_owner->b_waiting )
1144     {
1145         p_owner->b_has_data = true;
1146         vlc_cond_signal( &p_owner->wait_acknowledge );
1147     }
1148
1149     for( ;; )
1150     {
1151         bool b_paused;
1152
1153         bool b_reject = DecoderWaitUnblock( p_dec );
1154
1155         b_paused = p_owner->b_paused;
1156
1157         if (!p_audio)
1158             break;
1159
1160         /* */
1161         int i_rate = INPUT_RATE_DEFAULT;
1162
1163         DecoderFixTs( p_dec, &p_audio->i_pts, NULL, &p_audio->i_length,
1164                       &i_rate, AOUT_MAX_ADVANCE_TIME );
1165
1166         if( p_audio->i_pts <= VLC_TS_INVALID
1167          || i_rate < INPUT_RATE_DEFAULT/AOUT_MAX_INPUT_RATE
1168          || i_rate > INPUT_RATE_DEFAULT*AOUT_MAX_INPUT_RATE )
1169             b_reject = true;
1170
1171         DecoderWaitDate( p_dec, &b_reject,
1172                          p_audio->i_pts - AOUT_MAX_PREPARE_TIME );
1173
1174         if( unlikely(p_owner->b_paused != b_paused) )
1175             continue; /* race with input thread? retry... */
1176         if( p_aout == NULL )
1177             b_reject = true;
1178
1179         if( !b_reject )
1180         {
1181             assert( !p_owner->b_paused );
1182             if( !aout_DecPlay( p_aout, p_audio, i_rate ) )
1183                 *pi_played_sum += 1;
1184             *pi_lost_sum += aout_DecGetResetLost( p_aout );
1185         }
1186         else
1187         {
1188             msg_Dbg( p_dec, "discarded audio buffer" );
1189             *pi_lost_sum += 1;
1190             block_Release( p_audio );
1191         }
1192
1193         break;
1194     }
1195     vlc_mutex_unlock( &p_owner->lock );
1196 }
1197
1198 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
1199 {
1200     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1201     block_t *p_aout_buf;
1202     int i_decoded = 0;
1203     int i_lost = 0;
1204     int i_played = 0;
1205
1206     if (!p_block) {
1207         /* Play a NULL block to output buffered frames */
1208         DecoderPlayAudio( p_dec, NULL, &i_played, &i_lost );
1209     }
1210     else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
1211     {
1212         if( DecoderIsExitRequested( p_dec ) )
1213         {
1214             /* It prevent freezing VLC in case of broken decoder */
1215             block_Release( p_aout_buf );
1216             if( p_block )
1217                 block_Release( p_block );
1218             break;
1219         }
1220         i_decoded++;
1221
1222         if( p_owner->i_preroll_end > VLC_TS_INVALID &&
1223             p_aout_buf->i_pts < p_owner->i_preroll_end )
1224         {
1225             block_Release( p_aout_buf );
1226             continue;
1227         }
1228
1229         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1230         {
1231             msg_Dbg( p_dec, "End of audio preroll" );
1232             if( p_owner->p_aout )
1233                 aout_DecFlush( p_owner->p_aout );
1234             /* */
1235             p_owner->i_preroll_end = VLC_TS_INVALID;
1236         }
1237
1238         DecoderPlayAudio( p_dec, p_aout_buf, &i_played, &i_lost );
1239     }
1240
1241     /* Update ugly stat */
1242     input_thread_t  *p_input = p_owner->p_input;
1243
1244     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_played > 0) )
1245     {
1246         vlc_mutex_lock( &p_input->p->counters.counters_lock);
1247         stats_Update( p_input->p->counters.p_lost_abuffers, i_lost, NULL );
1248         stats_Update( p_input->p->counters.p_played_abuffers, i_played, NULL );
1249         stats_Update( p_input->p->counters.p_decoded_audio, i_decoded, NULL );
1250         vlc_mutex_unlock( &p_input->p->counters.counters_lock);
1251     }
1252 }
1253 static void DecoderGetCc( decoder_t *p_dec, decoder_t *p_dec_cc )
1254 {
1255     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1256     block_t *p_cc;
1257     bool pb_present[4];
1258     bool b_processed = false;
1259     int i;
1260     int i_cc_decoder;
1261
1262     assert( p_dec_cc->pf_get_cc != NULL );
1263
1264     /* Do not try retreiving CC if not wanted (sout) or cannot be retreived */
1265     if( !p_owner->cc.b_supported )
1266         return;
1267
1268     p_cc = p_dec_cc->pf_get_cc( p_dec_cc, pb_present );
1269     if( !p_cc )
1270         return;
1271
1272     vlc_mutex_lock( &p_owner->lock );
1273     for( i = 0, i_cc_decoder = 0; i < 4; i++ )
1274     {
1275         p_owner->cc.pb_present[i] |= pb_present[i];
1276         if( p_owner->cc.pp_decoder[i] )
1277             i_cc_decoder++;
1278     }
1279
1280     for( i = 0; i < 4; i++ )
1281     {
1282         if( !p_owner->cc.pp_decoder[i] )
1283             continue;
1284
1285         block_FifoPut( p_owner->cc.pp_decoder[i]->p_owner->p_fifo,
1286             (i_cc_decoder > 1) ? block_Duplicate(p_cc) : p_cc);
1287
1288         i_cc_decoder--;
1289         b_processed = true;
1290     }
1291     vlc_mutex_unlock( &p_owner->lock );
1292
1293     if( !b_processed )
1294         block_Release( p_cc );
1295 }
1296
1297 static void DecoderPlayVideo( decoder_t *p_dec, picture_t *p_picture,
1298                               int *pi_played_sum, int *pi_lost_sum )
1299 {
1300     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1301     vout_thread_t  *p_vout = p_owner->p_vout;
1302
1303     if( p_picture->date <= VLC_TS_INVALID )
1304     {
1305         msg_Warn( p_dec, "non-dated video buffer received" );
1306         *pi_lost_sum += 1;
1307         vout_ReleasePicture( p_vout, p_picture );
1308         return;
1309     }
1310
1311     /* */
1312     vlc_mutex_lock( &p_owner->lock );
1313
1314     if( p_owner->b_waiting && !p_owner->b_first )
1315     {
1316         p_owner->b_has_data = true;
1317         vlc_cond_signal( &p_owner->wait_acknowledge );
1318     }
1319     bool b_first_after_wait = p_owner->b_waiting && p_owner->b_has_data;
1320
1321     bool b_reject = DecoderWaitUnblock( p_dec );
1322
1323     if( p_owner->b_waiting )
1324     {
1325         assert( p_owner->b_first );
1326         msg_Dbg( p_dec, "Received first picture" );
1327         p_owner->b_first = false;
1328         p_picture->b_force = true;
1329     }
1330
1331     const bool b_dated = p_picture->date > VLC_TS_INVALID;
1332     int i_rate = INPUT_RATE_DEFAULT;
1333     DecoderFixTs( p_dec, &p_picture->date, NULL, NULL,
1334                   &i_rate, DECODER_BOGUS_VIDEO_DELAY );
1335
1336     vlc_mutex_unlock( &p_owner->lock );
1337
1338     /* */
1339     if( !p_picture->b_force && p_picture->date <= VLC_TS_INVALID ) // FIXME --VLC_TS_INVALID verify video_output/*
1340         b_reject = true;
1341
1342     if( !b_reject )
1343     {
1344         if( i_rate != p_owner->i_last_rate || b_first_after_wait )
1345         {
1346             /* Be sure to not display old picture after our own */
1347             vout_Flush( p_vout, p_picture->date );
1348             p_owner->i_last_rate = i_rate;
1349         }
1350         vout_PutPicture( p_vout, p_picture );
1351     }
1352     else
1353     {
1354         if( b_dated )
1355             msg_Warn( p_dec, "early picture skipped" );
1356         else
1357             msg_Warn( p_dec, "non-dated video buffer received" );
1358
1359         *pi_lost_sum += 1;
1360         vout_ReleasePicture( p_vout, p_picture );
1361     }
1362     int i_tmp_display;
1363     int i_tmp_lost;
1364     vout_GetResetStatistic( p_vout, &i_tmp_display, &i_tmp_lost );
1365
1366     *pi_played_sum += i_tmp_display;
1367     *pi_lost_sum += i_tmp_lost;
1368 }
1369
1370 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
1371 {
1372     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1373     picture_t      *p_pic;
1374     int i_lost = 0;
1375     int i_decoded = 0;
1376     int i_displayed = 0;
1377
1378     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
1379     {
1380         vout_thread_t  *p_vout = p_owner->p_vout;
1381         if( DecoderIsExitRequested( p_dec ) )
1382         {
1383             /* It prevent freezing VLC in case of broken decoder */
1384             vout_ReleasePicture( p_vout, p_pic );
1385             if( p_block )
1386                 block_Release( p_block );
1387             break;
1388         }
1389
1390         i_decoded++;
1391
1392         if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
1393         {
1394             vout_ReleasePicture( p_vout, p_pic );
1395             continue;
1396         }
1397
1398         if( p_owner->i_preroll_end > VLC_TS_INVALID )
1399         {
1400             msg_Dbg( p_dec, "End of video preroll" );
1401             if( p_vout )
1402                 vout_Flush( p_vout, VLC_TS_INVALID+1 );
1403             /* */
1404             p_owner->i_preroll_end = VLC_TS_INVALID;
1405         }
1406
1407         if( p_dec->pf_get_cc &&
1408             ( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
1409             DecoderGetCc( p_dec, p_dec );
1410
1411         DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
1412     }
1413
1414     /* Update ugly stat */
1415     input_thread_t *p_input = p_owner->p_input;
1416
1417     if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
1418     {
1419         vlc_mutex_lock( &p_input->p->counters.counters_lock );
1420         stats_Update( p_input->p->counters.p_decoded_video, i_decoded, NULL );
1421         stats_Update( p_input->p->counters.p_lost_pictures, i_lost , NULL);
1422         stats_Update( p_input->p->counters.p_displayed_pictures,
1423                       i_displayed, NULL);
1424         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1425     }
1426 }
1427
1428 static void DecoderPlaySpu( decoder_t *p_dec, subpicture_t *p_subpic )
1429 {
1430     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1431     vout_thread_t *p_vout = p_owner->p_spu_vout;
1432
1433     /* */
1434     if( p_subpic->i_start <= VLC_TS_INVALID )
1435     {
1436         msg_Warn( p_dec, "non-dated spu buffer received" );
1437         subpicture_Delete( p_subpic );
1438         return;
1439     }
1440
1441     /* */
1442     vlc_mutex_lock( &p_owner->lock );
1443
1444     if( p_owner->b_waiting )
1445     {
1446         p_owner->b_has_data = true;
1447         vlc_cond_signal( &p_owner->wait_acknowledge );
1448     }
1449
1450     bool b_reject = DecoderWaitUnblock( p_dec );
1451
1452     DecoderFixTs( p_dec, &p_subpic->i_start, &p_subpic->i_stop, NULL,
1453                   NULL, INT64_MAX );
1454
1455     if( p_subpic->i_start <= VLC_TS_INVALID )
1456         b_reject = true;
1457
1458     DecoderWaitDate( p_dec, &b_reject,
1459                      p_subpic->i_start - SPU_MAX_PREPARE_TIME );
1460     vlc_mutex_unlock( &p_owner->lock );
1461
1462     if( !b_reject )
1463         vout_PutSubpicture( p_vout, p_subpic );
1464     else
1465         subpicture_Delete( p_subpic );
1466 }
1467
1468 #ifdef ENABLE_SOUT
1469 static void DecoderPlaySout( decoder_t *p_dec, block_t *p_sout_block )
1470 {
1471     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1472
1473     assert( p_owner->p_clock );
1474     assert( !p_sout_block->p_next );
1475
1476     vlc_mutex_lock( &p_owner->lock );
1477
1478     if( p_owner->b_waiting )
1479     {
1480         p_owner->b_has_data = true;
1481         vlc_cond_signal( &p_owner->wait_acknowledge );
1482     }
1483
1484     bool b_reject = DecoderWaitUnblock( p_dec );
1485
1486     DecoderFixTs( p_dec, &p_sout_block->i_dts, &p_sout_block->i_pts,
1487                   &p_sout_block->i_length, NULL, INT64_MAX );
1488
1489     vlc_mutex_unlock( &p_owner->lock );
1490
1491     if( !b_reject )
1492         sout_InputSendBuffer( p_owner->p_sout_input, p_sout_block ); // FIXME --VLC_TS_INVALID inspect stream_output/*
1493     else
1494         block_Release( p_sout_block );
1495 }
1496 #endif
1497
1498 #ifdef ENABLE_SOUT
1499 /* This function process a block for sout
1500  */
1501 static void DecoderProcessSout( decoder_t *p_dec, block_t *p_block )
1502 {
1503     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1504     block_t *p_sout_block;
1505
1506     while( ( p_sout_block =
1507                  p_dec->pf_packetize( p_dec, p_block ? &p_block : NULL ) ) )
1508     {
1509         if( !p_owner->p_sout_input )
1510         {
1511             es_format_Copy( &p_owner->sout, &p_dec->fmt_out );
1512
1513             p_owner->sout.i_group = p_dec->fmt_in.i_group;
1514             p_owner->sout.i_id = p_dec->fmt_in.i_id;
1515             if( p_dec->fmt_in.psz_language )
1516             {
1517                 free( p_owner->sout.psz_language );
1518                 p_owner->sout.psz_language =
1519                     strdup( p_dec->fmt_in.psz_language );
1520             }
1521
1522             p_owner->p_sout_input =
1523                 sout_InputNew( p_owner->p_sout,
1524                                &p_owner->sout );
1525
1526             if( p_owner->p_sout_input == NULL )
1527             {
1528                 msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
1529                          (char *)&p_owner->sout.i_codec );
1530                 p_dec->b_error = true;
1531
1532                 while( p_sout_block )
1533                 {
1534                     block_t *p_next = p_sout_block->p_next;
1535                     block_Release( p_sout_block );
1536                     p_sout_block = p_next;
1537                 }
1538                 break;
1539             }
1540         }
1541
1542         while( p_sout_block )
1543         {
1544             block_t *p_next = p_sout_block->p_next;
1545
1546             p_sout_block->p_next = NULL;
1547
1548             DecoderPlaySout( p_dec, p_sout_block );
1549
1550             p_sout_block = p_next;
1551         }
1552     }
1553 }
1554 #endif
1555
1556 /* This function process a video block
1557  */
1558 static void DecoderProcessVideo( decoder_t *p_dec, block_t *p_block, bool b_flush )
1559 {
1560     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1561
1562     if( p_owner->p_packetizer )
1563     {
1564         block_t *p_packetized_block;
1565         decoder_t *p_packetizer = p_owner->p_packetizer;
1566
1567         while( (p_packetized_block =
1568                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1569         {
1570             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1571             {
1572                 es_format_Clean( &p_dec->fmt_in );
1573                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1574             }
1575             if( p_packetizer->pf_get_cc )
1576                 DecoderGetCc( p_dec, p_packetizer );
1577
1578             while( p_packetized_block )
1579             {
1580                 block_t *p_next = p_packetized_block->p_next;
1581                 p_packetized_block->p_next = NULL;
1582
1583                 DecoderDecodeVideo( p_dec, p_packetized_block );
1584
1585                 p_packetized_block = p_next;
1586             }
1587         }
1588         /* The packetizer does not output a block that tell the decoder to flush
1589          * do it ourself */
1590         if( b_flush )
1591         {
1592             block_t *p_null = DecoderBlockFlushNew();
1593             if( p_null )
1594                 DecoderDecodeVideo( p_dec, p_null );
1595         }
1596     }
1597     else if( p_block )
1598     {
1599         DecoderDecodeVideo( p_dec, p_block );
1600     }
1601
1602     if( b_flush && p_owner->p_vout )
1603         vout_Flush( p_owner->p_vout, VLC_TS_INVALID+1 );
1604 }
1605
1606 /* This function process a audio block
1607  */
1608 static void DecoderProcessAudio( decoder_t *p_dec, block_t *p_block, bool b_flush )
1609 {
1610     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1611
1612     if( p_owner->p_packetizer )
1613     {
1614         block_t *p_packetized_block;
1615         decoder_t *p_packetizer = p_owner->p_packetizer;
1616
1617         while( (p_packetized_block =
1618                 p_packetizer->pf_packetize( p_packetizer, p_block ? &p_block : NULL )) )
1619         {
1620             if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
1621             {
1622                 es_format_Clean( &p_dec->fmt_in );
1623                 es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
1624             }
1625
1626             while( p_packetized_block )
1627             {
1628                 block_t *p_next = p_packetized_block->p_next;
1629                 p_packetized_block->p_next = NULL;
1630
1631                 DecoderDecodeAudio( p_dec, p_packetized_block );
1632
1633                 p_packetized_block = p_next;
1634             }
1635         }
1636         /* The packetizer does not output a block that tell the decoder to flush
1637          * do it ourself */
1638         if( b_flush )
1639         {
1640             block_t *p_null = DecoderBlockFlushNew();
1641             if( p_null )
1642                 DecoderDecodeAudio( p_dec, p_null );
1643         }
1644     }
1645     else
1646     {
1647         DecoderDecodeAudio( p_dec, p_block );
1648     }
1649
1650     if( b_flush && p_owner->p_aout )
1651         aout_DecFlush( p_owner->p_aout );
1652 }
1653
1654 /* This function process a subtitle block
1655  */
1656 static void DecoderProcessSpu( decoder_t *p_dec, block_t *p_block, bool b_flush )
1657 {
1658     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1659
1660     input_thread_t *p_input = p_owner->p_input;
1661     vout_thread_t *p_vout;
1662     subpicture_t *p_spu;
1663
1664     while( (p_spu = p_dec->pf_decode_sub( p_dec, p_block ? &p_block : NULL ) ) )
1665     {
1666         if( p_input != NULL )
1667         {
1668             vlc_mutex_lock( &p_input->p->counters.counters_lock );
1669             stats_Update( p_input->p->counters.p_decoded_sub, 1, NULL );
1670             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
1671         }
1672
1673         p_vout = input_resource_HoldVout( p_owner->p_resource );
1674         if( p_vout && p_owner->p_spu_vout == p_vout )
1675         {
1676             /* Preroll does not work very well with subtitle */
1677             if( p_spu->i_start > VLC_TS_INVALID &&
1678                 p_spu->i_start < p_owner->i_preroll_end &&
1679                 ( p_spu->i_stop <= VLC_TS_INVALID || p_spu->i_stop < p_owner->i_preroll_end ) )
1680             {
1681                 subpicture_Delete( p_spu );
1682             }
1683             else
1684             {
1685                 DecoderPlaySpu( p_dec, p_spu );
1686             }
1687         }
1688         else
1689         {
1690             subpicture_Delete( p_spu );
1691         }
1692         if( p_vout )
1693             vlc_object_release( p_vout );
1694     }
1695
1696     if( b_flush && p_owner->p_spu_vout )
1697     {
1698         p_vout = input_resource_HoldVout( p_owner->p_resource );
1699
1700         if( p_vout && p_owner->p_spu_vout == p_vout )
1701             vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1702
1703         if( p_vout )
1704             vlc_object_release( p_vout );
1705     }
1706 }
1707
1708 /* */
1709 static void DecoderProcessOnFlush( decoder_t *p_dec )
1710 {
1711     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1712
1713     vlc_mutex_lock( &p_owner->lock );
1714
1715     if( p_owner->b_flushing )
1716     {
1717         p_owner->b_flushing = false;
1718         vlc_cond_signal( &p_owner->wait_acknowledge );
1719     }
1720     vlc_mutex_unlock( &p_owner->lock );
1721 }
1722
1723 /**
1724  * Decode a block
1725  *
1726  * \param p_dec the decoder object
1727  * \param p_block the block to decode
1728  * \return VLC_SUCCESS or an error code
1729  */
1730 static void DecoderProcess( decoder_t *p_dec, block_t *p_block )
1731 {
1732     decoder_owner_sys_t *p_owner = (decoder_owner_sys_t *)p_dec->p_owner;
1733     const bool b_flush_request = p_block && (p_block->i_flags & BLOCK_FLAG_CORE_FLUSH);
1734
1735     if( p_dec->b_error )
1736     {
1737         if( p_block )
1738             block_Release( p_block );
1739         goto flush;
1740     }
1741
1742     if( p_block && p_block->i_buffer <= 0 )
1743     {
1744         assert( !b_flush_request );
1745         block_Release( p_block );
1746         return;
1747     }
1748
1749 #ifdef ENABLE_SOUT
1750     if( p_owner->b_packetizer )
1751     {
1752         if( p_block )
1753             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1754
1755         DecoderProcessSout( p_dec, p_block );
1756     }
1757     else
1758 #endif
1759     {
1760         bool b_flush = false;
1761
1762         if( p_block )
1763         {
1764             const bool b_flushing = p_owner->i_preroll_end == INT64_MAX;
1765             DecoderUpdatePreroll( &p_owner->i_preroll_end, p_block );
1766
1767             b_flush = !b_flushing && b_flush_request;
1768
1769             p_block->i_flags &= ~BLOCK_FLAG_CORE_PRIVATE_MASK;
1770         }
1771
1772         if( p_dec->fmt_out.i_cat == AUDIO_ES )
1773         {
1774             DecoderProcessAudio( p_dec, p_block, b_flush );
1775         }
1776         else if( p_dec->fmt_out.i_cat == VIDEO_ES )
1777         {
1778             DecoderProcessVideo( p_dec, p_block, b_flush );
1779         }
1780         else if( p_dec->fmt_out.i_cat == SPU_ES )
1781         {
1782             DecoderProcessSpu( p_dec, p_block, b_flush );
1783         }
1784         else
1785         {
1786             msg_Err( p_dec, "unknown ES format" );
1787             p_dec->b_error = true;
1788         }
1789     }
1790
1791     /* */
1792 flush:
1793     if( b_flush_request )
1794         DecoderProcessOnFlush( p_dec );
1795 }
1796
1797 /**
1798  * Destroys a decoder object
1799  *
1800  * \param p_dec the decoder object
1801  * \return nothing
1802  */
1803 static void DeleteDecoder( decoder_t * p_dec )
1804 {
1805     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1806
1807     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %u PES in FIFO",
1808              (char*)&p_dec->fmt_in.i_codec,
1809              (unsigned)block_FifoCount( p_owner->p_fifo ) );
1810
1811     /* Free all packets still in the decoder fifo. */
1812     block_FifoEmpty( p_owner->p_fifo );
1813     block_FifoRelease( p_owner->p_fifo );
1814
1815     /* Cleanup */
1816     if( p_owner->p_aout )
1817     {
1818         /* TODO: REVISIT gap-less audio */
1819         aout_DecFlush( p_owner->p_aout );
1820         aout_DecDelete( p_owner->p_aout );
1821         input_resource_PutAout( p_owner->p_resource, p_owner->p_aout );
1822         if( p_owner->p_input != NULL )
1823             input_SendEventAout( p_owner->p_input );
1824     }
1825     if( p_owner->p_vout )
1826     {
1827         /* Hack to make sure all the the pictures are freed by the decoder
1828          * and that the vout is not paused anymore */
1829         vout_Reset( p_owner->p_vout );
1830
1831         /* */
1832         input_resource_RequestVout( p_owner->p_resource, p_owner->p_vout, NULL,
1833                                     0, true );
1834         if( p_owner->p_input != NULL )
1835             input_SendEventVout( p_owner->p_input );
1836     }
1837
1838 #ifdef ENABLE_SOUT
1839     if( p_owner->p_sout_input )
1840     {
1841         sout_InputDelete( p_owner->p_sout_input );
1842         es_format_Clean( &p_owner->sout );
1843     }
1844 #endif
1845
1846     if( p_dec->fmt_out.i_cat == SPU_ES )
1847     {
1848         vout_thread_t *p_vout = input_resource_HoldVout( p_owner->p_resource );
1849         if( p_vout )
1850         {
1851             if( p_owner->p_spu_vout == p_vout )
1852                 vout_FlushSubpictureChannel( p_vout, p_owner->i_spu_channel );
1853             vlc_object_release( p_vout );
1854         }
1855     }
1856
1857     es_format_Clean( &p_dec->fmt_in );
1858     es_format_Clean( &p_dec->fmt_out );
1859     if( p_dec->p_description )
1860         vlc_meta_Delete( p_dec->p_description );
1861     es_format_Clean( &p_owner->fmt_description );
1862     if( p_owner->p_description )
1863         vlc_meta_Delete( p_owner->p_description );
1864
1865     if( p_owner->p_packetizer )
1866     {
1867         module_unneed( p_owner->p_packetizer,
1868                        p_owner->p_packetizer->p_module );
1869         es_format_Clean( &p_owner->p_packetizer->fmt_in );
1870         es_format_Clean( &p_owner->p_packetizer->fmt_out );
1871         if( p_owner->p_packetizer->p_description )
1872             vlc_meta_Delete( p_owner->p_packetizer->p_description );
1873         vlc_object_release( p_owner->p_packetizer );
1874     }
1875
1876     vlc_cond_destroy( &p_owner->wait_acknowledge );
1877     vlc_cond_destroy( &p_owner->wait_request );
1878     vlc_mutex_destroy( &p_owner->lock );
1879
1880     vlc_object_release( p_dec );
1881
1882     free( p_owner );
1883 }
1884
1885 /*****************************************************************************
1886  * Buffers allocation callbacks for the decoders
1887  *****************************************************************************/
1888 static void DecoderUpdateFormatLocked( decoder_t *p_dec )
1889 {
1890     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1891
1892     vlc_assert_locked( &p_owner->lock );
1893
1894     p_owner->b_fmt_description = true;
1895
1896     /* Copy es_format */
1897     es_format_Clean( &p_owner->fmt_description );
1898     es_format_Copy( &p_owner->fmt_description, &p_dec->fmt_out );
1899
1900     /* Move p_description */
1901     if( p_owner->p_description && p_dec->p_description )
1902         vlc_meta_Delete( p_owner->p_description );
1903     p_owner->p_description = p_dec->p_description;
1904     p_dec->p_description = NULL;
1905 }
1906 static vout_thread_t *aout_request_vout( void *p_private,
1907                                          vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recyle )
1908 {
1909     decoder_t *p_dec = p_private;
1910     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1911     input_thread_t *p_input = p_owner->p_input;
1912
1913     p_vout = input_resource_RequestVout( p_owner->p_resource, p_vout, p_fmt, 1,
1914                                          b_recyle );
1915     if( p_input != NULL )
1916         input_SendEventVout( p_input );
1917
1918     return p_vout;
1919 }
1920
1921 static int aout_update_format( decoder_t *p_dec )
1922 {
1923     decoder_owner_sys_t *p_owner = p_dec->p_owner;
1924
1925     if( p_owner->p_aout
1926      && !AOUT_FMTS_IDENTICAL(&p_dec->fmt_out.audio, &p_owner->audio) )
1927     {
1928         audio_output_t *p_aout = p_owner->p_aout;
1929
1930         /* Parameters changed, restart the aout */
1931         vlc_mutex_lock( &p_owner->lock );
1932
1933         aout_DecDelete( p_owner->p_aout );
1934         p_owner->p_aout = NULL;
1935
1936         vlc_mutex_unlock( &p_owner->lock );
1937         input_resource_PutAout( p_owner->p_resource, p_aout );
1938     }
1939
1940     if( p_owner->p_aout == NULL )
1941     {
1942         const int i_force_dolby = var_InheritInteger( p_dec, "force-dolby-surround" );
1943         audio_sample_format_t format;
1944         audio_output_t *p_aout;
1945         aout_request_vout_t request_vout;
1946
1947         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
1948         p_owner->audio = p_dec->fmt_out.audio;
1949         aout_FormatPrepare( &p_owner->audio );
1950
1951         memcpy( &format, &p_owner->audio, sizeof( audio_sample_format_t ) );
1952         if( i_force_dolby &&
1953             (format.i_original_channels&AOUT_CHAN_PHYSMASK) ==
1954                 (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
1955         {
1956             if( i_force_dolby == 1 )
1957             {
1958                 format.i_original_channels = format.i_original_channels |
1959                                              AOUT_CHAN_DOLBYSTEREO;
1960             }
1961             else /* i_force_dolby == 2 */
1962             {
1963                 format.i_original_channels = format.i_original_channels &
1964                                              ~AOUT_CHAN_DOLBYSTEREO;
1965             }
1966         }
1967
1968         request_vout.pf_request_vout = aout_request_vout;
1969         request_vout.p_private = p_dec;
1970
1971         assert( p_owner->p_aout == NULL );
1972         p_aout = input_resource_GetAout( p_owner->p_resource );
1973         if( p_aout )
1974         {
1975             if( aout_DecNew( p_aout, &format,
1976                              &p_dec->fmt_out.audio_replay_gain,
1977                              &request_vout ) )
1978             {
1979                 input_resource_PutAout( p_owner->p_resource, p_aout );
1980                 p_aout = NULL;
1981             }
1982         }
1983
1984         vlc_mutex_lock( &p_owner->lock );
1985
1986         p_owner->p_aout = p_aout;
1987         DecoderUpdateFormatLocked( p_dec );
1988         if( unlikely(p_owner->b_paused) ) /* fake pause if needed */
1989             aout_DecChangePause( p_aout, true, mdate() );
1990
1991         vlc_mutex_unlock( &p_owner->lock );
1992
1993         if( p_owner->p_input != NULL )
1994             input_SendEventAout( p_owner->p_input );
1995
1996         if( p_aout == NULL )
1997         {
1998             msg_Err( p_dec, "failed to create audio output" );
1999             p_dec->b_error = true;
2000             return -1;
2001         }
2002
2003         p_dec->fmt_out.audio.i_bytes_per_frame =
2004             p_owner->audio.i_bytes_per_frame;
2005         p_dec->fmt_out.audio.i_frame_length = p_owner->audio.i_frame_length;
2006     }
2007     return 0;
2008 }
2009
2010 static picture_t *vout_new_buffer( decoder_t *p_dec )
2011 {
2012     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2013
2014     if( p_owner->p_vout == NULL ||
2015         p_dec->fmt_out.video.i_width != p_owner->video.i_width ||
2016         p_dec->fmt_out.video.i_height != p_owner->video.i_height ||
2017         p_dec->fmt_out.video.i_visible_width != p_owner->video.i_visible_width ||
2018         p_dec->fmt_out.video.i_visible_height != p_owner->video.i_visible_height ||
2019         p_dec->fmt_out.video.i_x_offset != p_owner->video.i_x_offset  ||
2020         p_dec->fmt_out.video.i_y_offset != p_owner->video.i_y_offset  ||
2021         p_dec->fmt_out.i_codec != p_owner->video.i_chroma ||
2022         (int64_t)p_dec->fmt_out.video.i_sar_num * p_owner->video.i_sar_den !=
2023         (int64_t)p_dec->fmt_out.video.i_sar_den * p_owner->video.i_sar_num )
2024     {
2025         vout_thread_t *p_vout;
2026
2027         if( !p_dec->fmt_out.video.i_width ||
2028             !p_dec->fmt_out.video.i_height )
2029         {
2030             /* Can't create a new vout without display size */
2031             return NULL;
2032         }
2033
2034         video_format_t fmt = p_dec->fmt_out.video;
2035         fmt.i_chroma = p_dec->fmt_out.i_codec;
2036         p_owner->video = fmt;
2037
2038         if( vlc_fourcc_IsYUV( fmt.i_chroma ) )
2039         {
2040             const vlc_chroma_description_t *dsc = vlc_fourcc_GetChromaDescription( fmt.i_chroma );
2041             for( unsigned int i = 0; dsc && i < dsc->plane_count; i++ )
2042             {
2043                 while( fmt.i_width % dsc->p[i].w.den )
2044                     fmt.i_width++;
2045                 while( fmt.i_height % dsc->p[i].h.den )
2046                     fmt.i_height++;
2047             }
2048         }
2049
2050         if( !fmt.i_visible_width || !fmt.i_visible_height )
2051         {
2052             if( p_dec->fmt_in.video.i_visible_width &&
2053                 p_dec->fmt_in.video.i_visible_height )
2054             {
2055                 fmt.i_visible_width  = p_dec->fmt_in.video.i_visible_width;
2056                 fmt.i_visible_height = p_dec->fmt_in.video.i_visible_height;
2057                 fmt.i_x_offset       = p_dec->fmt_in.video.i_x_offset;
2058                 fmt.i_y_offset       = p_dec->fmt_in.video.i_y_offset;
2059             }
2060             else
2061             {
2062                 fmt.i_visible_width  = fmt.i_width;
2063                 fmt.i_visible_height = fmt.i_height;
2064                 fmt.i_x_offset       = 0;
2065                 fmt.i_y_offset       = 0;
2066             }
2067         }
2068
2069         if( fmt.i_visible_height == 1088 &&
2070             var_CreateGetBool( p_dec, "hdtv-fix" ) )
2071         {
2072             fmt.i_visible_height = 1080;
2073             if( !(fmt.i_sar_num % 136))
2074             {
2075                 fmt.i_sar_num *= 135;
2076                 fmt.i_sar_den *= 136;
2077             }
2078             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
2079         }
2080
2081         if( !fmt.i_sar_num || !fmt.i_sar_den )
2082         {
2083             fmt.i_sar_num = 1;
2084             fmt.i_sar_den = 1;
2085         }
2086
2087         vlc_ureduce( &fmt.i_sar_num, &fmt.i_sar_den,
2088                      fmt.i_sar_num, fmt.i_sar_den, 50000 );
2089
2090         vlc_mutex_lock( &p_owner->lock );
2091
2092         p_vout = p_owner->p_vout;
2093         p_owner->p_vout = NULL;
2094         vlc_mutex_unlock( &p_owner->lock );
2095
2096         unsigned dpb_size;
2097         switch( p_dec->fmt_in.i_codec )
2098         {
2099         case VLC_CODEC_HEVC:
2100         case VLC_CODEC_H264:
2101         case VLC_CODEC_DIRAC: /* FIXME valid ? */
2102             dpb_size = 18;
2103             break;
2104         case VLC_CODEC_VP5:
2105         case VLC_CODEC_VP6:
2106         case VLC_CODEC_VP6F:
2107         case VLC_CODEC_VP8:
2108             dpb_size = 3;
2109             break;
2110         default:
2111             dpb_size = 2;
2112             break;
2113         }
2114         p_vout = input_resource_RequestVout( p_owner->p_resource,
2115                                              p_vout, &fmt,
2116                                              dpb_size +
2117                                              p_dec->i_extra_picture_buffers + 1,
2118                                              true );
2119         vlc_mutex_lock( &p_owner->lock );
2120         p_owner->p_vout = p_vout;
2121
2122         DecoderUpdateFormatLocked( p_dec );
2123
2124         vlc_mutex_unlock( &p_owner->lock );
2125
2126         if( p_owner->p_input != NULL )
2127             input_SendEventVout( p_owner->p_input );
2128         if( p_vout == NULL )
2129         {
2130             msg_Err( p_dec, "failed to create video output" );
2131             p_dec->b_error = true;
2132             return NULL;
2133         }
2134     }
2135
2136     /* Get a new picture
2137      */
2138     for( ;; )
2139     {
2140         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2141             return NULL;
2142
2143         picture_t *p_picture = vout_GetPicture( p_owner->p_vout );
2144         if( p_picture )
2145             return p_picture;
2146
2147         if( DecoderIsFlushing( p_dec ) )
2148             return NULL;
2149
2150         /* */
2151         DecoderSignalWait( p_dec, true );
2152
2153         /* Check the decoder doesn't leak pictures */
2154         vout_FixLeaks( p_owner->p_vout );
2155
2156         /* FIXME add a vout_WaitPictureAvailable (timedwait) */
2157         msleep( VOUT_OUTMEM_SLEEP );
2158     }
2159 }
2160
2161 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
2162 {
2163     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2164 }
2165
2166 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
2167 {
2168     vout_HoldPicture( p_dec->p_owner->p_vout, p_pic );
2169 }
2170
2171 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
2172 {
2173     vout_ReleasePicture( p_dec->p_owner->p_vout, p_pic );
2174 }
2175
2176 static subpicture_t *spu_new_buffer( decoder_t *p_dec,
2177                                      const subpicture_updater_t *p_updater )
2178 {
2179     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2180     vout_thread_t *p_vout = NULL;
2181     subpicture_t *p_subpic;
2182     int i_attempts = 30;
2183
2184     while( i_attempts-- )
2185     {
2186         if( DecoderIsExitRequested( p_dec ) || p_dec->b_error )
2187             break;
2188
2189         p_vout = input_resource_HoldVout( p_owner->p_resource );
2190         if( p_vout )
2191             break;
2192
2193         msleep( DECODER_SPU_VOUT_WAIT_DURATION );
2194     }
2195
2196     if( !p_vout )
2197     {
2198         msg_Warn( p_dec, "no vout found, dropping subpicture" );
2199         return NULL;
2200     }
2201
2202     if( p_owner->p_spu_vout != p_vout )
2203     {
2204         p_owner->i_spu_channel = vout_RegisterSubpictureChannel( p_vout );
2205         p_owner->i_spu_order = 0;
2206         p_owner->p_spu_vout = p_vout;
2207     }
2208
2209     p_subpic = subpicture_New( p_updater );
2210     if( p_subpic )
2211     {
2212         p_subpic->i_channel = p_owner->i_spu_channel;
2213         p_subpic->i_order = p_owner->i_spu_order++;
2214         p_subpic->b_subtitle = true;
2215     }
2216
2217     vlc_object_release( p_vout );
2218
2219     return p_subpic;
2220 }
2221
2222 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2223 {
2224     decoder_owner_sys_t *p_owner = p_dec->p_owner;
2225     vout_thread_t *p_vout = NULL;
2226
2227     p_vout = input_resource_HoldVout( p_owner->p_resource );
2228     if( !p_vout || p_owner->p_spu_vout != p_vout )
2229     {
2230         if( p_vout )
2231             vlc_object_release( p_vout );
2232         msg_Warn( p_dec, "no vout found, leaking subpicture" );
2233         return;
2234     }
2235
2236     subpicture_Delete( p_subpic );
2237
2238     vlc_object_release( p_vout );
2239 }