git.sesse.net Git - vlc/blob - src/input/decoder.c

   1 /*****************************************************************************
   2  * decoder.c: Functions for the management of decoders
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *          Laurent Aimar <fenrir@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include <stdlib.h>
  30 #include <vlc/vlc.h>
  31
  32 #include <vlc_block.h>
  33 #include <vlc_vout.h>
  34 #include <vlc_aout.h>
  35 #include <vlc_sout.h>
  36 #include <vlc_codec.h>
  37 #include <vlc_osd.h>
  38
  39 #include <vlc_interface.h>
  40 #include "audio_output/aout_internal.h"
  41 #include "stream_output/stream_output.h"
  42 #include "input_internal.h"
  43
  44 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
  45 static void        DeleteDecoder( decoder_t * );
  46
  47 static int         DecoderThread( decoder_t * );
  48 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  49
  50 /* Buffers allocation callbacks for the decoders */
  51 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  52 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  53
  54 static picture_t *vout_new_buffer( decoder_t * );
  55 static void vout_del_buffer( decoder_t *, picture_t * );
  56 static void vout_link_picture( decoder_t *, picture_t * );
  57 static void vout_unlink_picture( decoder_t *, picture_t * );
  58
  59 static subpicture_t *spu_new_buffer( decoder_t * );
  60 static void spu_del_buffer( decoder_t *, subpicture_t * );
  61
  62 static es_format_t null_es_format;
  63
  64 struct decoder_owner_sys_t
  65 {
  66     vlc_bool_t      b_own_thread;
  67
  68     int64_t         i_preroll_end;
  69
  70     input_thread_t  *p_input;
  71
  72     aout_instance_t *p_aout;
  73     aout_input_t    *p_aout_input;
  74
  75     vout_thread_t   *p_vout;
  76
  77     vout_thread_t   *p_spu_vout;
  78     int              i_spu_channel;
  79
  80     sout_instance_t         *p_sout;
  81     sout_packetizer_input_t *p_sout_input;
  82
  83     /* Some decoders require already packetized data (ie. not truncated) */
  84     decoder_t *p_packetizer;
  85
  86     /* Current format in use by the output */
  87     video_format_t video;
  88     audio_format_t audio;
  89     es_format_t    sout;
  90
  91     /* fifo */
  92     block_fifo_t *p_fifo;
  93 };
  94
  95 /* decoder_GetInputAttachment:
  96  */
  97 input_attachment_t *decoder_GetInputAttachment( decoder_t *p_dec,
  98                                                 const char *psz_name )
  99 {
 100     input_attachment_t *p_attachment;
 101     if( input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENT, &p_attachment, psz_name ) )
 102         return NULL;
 103     return p_attachment;
 104 }
 105 /* decoder_GetInputAttachments:
 106  */
 107 int decoder_GetInputAttachments( decoder_t *p_dec,
 108                                  input_attachment_t ***ppp_attachment,
 109                                  int *pi_attachment )
 110 {
 111     return input_Control( p_dec->p_owner->p_input, INPUT_GET_ATTACHMENTS,
 112                           ppp_attachment, pi_attachment );
 113 }
 114
 115 /**
 116  * Spawns a new decoder thread
 117  *
 118  * \param p_input the input thread
 119  * \param p_es the es descriptor
 120  * \return the spawned decoder object
 121  */
 122 decoder_t *input_DecoderNew( input_thread_t *p_input,
 123                              es_format_t *fmt, vlc_bool_t b_force_decoder )
 124 {
 125     decoder_t   *p_dec = NULL;
 126     vlc_value_t val;
 127
 128     /* If we are in sout mode, search for packetizer module */
 129     if( p_input->p->p_sout && !b_force_decoder )
 130     {
 131         /* Create the decoder configuration structure */
 132         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
 133         if( p_dec == NULL )
 134         {
 135             msg_Err( p_input, "could not create packetizer" );
 136             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 137                             _("VLC could not open the packetizer module.") );
 138             return NULL;
 139         }
 140     }
 141     else
 142     {
 143         /* Create the decoder configuration structure */
 144         p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
 145         if( p_dec == NULL )
 146         {
 147             msg_Err( p_input, "could not create decoder" );
 148             intf_UserFatal( p_input, VLC_FALSE, _("Streaming / Transcoding failed"),
 149                             _("VLC could not open the decoder module.") );
 150             return NULL;
 151         }
 152     }
 153
 154     if( !p_dec->p_module )
 155     {
 156         msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 157                  "VLC probably does not support this sound or video format.",
 158                  (char*)&p_dec->fmt_in.i_codec );
 159         intf_UserFatal( p_dec, VLC_FALSE, _("No suitable decoder module "
 160             "for format"), _("VLC probably does not support the \"%4.4s\" "
 161             "audio or video format. Unfortunately there is no way for you "
 162             "to fix this."), (char*)&p_dec->fmt_in.i_codec );
 163
 164         DeleteDecoder( p_dec );
 165         vlc_object_destroy( p_dec );
 166         return NULL;
 167     }
 168
 169     if( p_input->p->p_sout && p_input->p->input.b_can_pace_control &&
 170         !b_force_decoder )
 171     {
 172         msg_Dbg( p_input, "stream out mode -> no decoder thread" );
 173         p_dec->p_owner->b_own_thread = VLC_FALSE;
 174     }
 175     else
 176     {
 177         var_Get( p_input, "minimize-threads", &val );
 178         p_dec->p_owner->b_own_thread = !val.b_bool;
 179     }
 180
 181     if( p_dec->p_owner->b_own_thread )
 182     {
 183         int i_priority;
 184         if( fmt->i_cat == AUDIO_ES )
 185             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 186         else
 187             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 188
 189         /* Spawn the decoder thread */
 190         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 191                                i_priority, VLC_FALSE ) )
 192         {
 193             msg_Err( p_dec, "cannot spawn decoder thread" );
 194             module_Unneed( p_dec, p_dec->p_module );
 195             DeleteDecoder( p_dec );
 196             vlc_object_destroy( p_dec );
 197             return NULL;
 198         }
 199     }
 200
 201     return p_dec;
 202 }
 203
 204 /**
 205  * Kills a decoder thread and waits until it's finished
 206  *
 207  * \param p_input the input thread
 208  * \param p_es the es descriptor
 209  * \return nothing
 210  */
 211 void input_DecoderDelete( decoder_t *p_dec )
 212 {
 213     vlc_object_kill( p_dec );
 214
 215     if( p_dec->p_owner->b_own_thread )
 216     {
 217         /* Make sure the thread leaves the function by
 218          * sending it an empty block. */
 219         block_t *p_block = block_New( p_dec, 0 );
 220         input_DecoderDecode( p_dec, p_block );
 221
 222         vlc_thread_join( p_dec );
 223
 224         /* Don't module_Unneed() here because of the dll loader that wants
 225          * close() in the same thread than open()/decode() */
 226     }
 227     else
 228     {
 229         /* Flush */
 230         input_DecoderDecode( p_dec, NULL );
 231
 232         module_Unneed( p_dec, p_dec->p_module );
 233     }
 234
 235     /* Delete decoder configuration */
 236     DeleteDecoder( p_dec );
 237
 238     /* Delete the decoder */
 239     vlc_object_destroy( p_dec );
 240 }
 241
 242 /**
 243  * Put a block_t in the decoder's fifo.
 244  *
 245  * \param p_dec the decoder object
 246  * \param p_block the data block
 247  */
 248 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 249 {
 250     if( p_dec->p_owner->b_own_thread )
 251     {
 252         if( p_dec->p_owner->p_input->p->b_out_pace_control )
 253         {
 254             /* FIXME !!!!! */
 255             while( !p_dec->b_die && !p_dec->b_error &&
 256                    p_dec->p_owner->p_fifo->i_depth > 10 )
 257             {
 258                 msleep( 1000 );
 259             }
 260         }
 261         else if( p_dec->p_owner->p_fifo->i_size > 50000000 /* 50 MB */ )
 262         {
 263             /* FIXME: ideally we would check the time amount of data
 264              * in the fifo instead of its size. */
 265             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 266                       "consumed quickly enough), resetting fifo!" );
 267             block_FifoEmpty( p_dec->p_owner->p_fifo );
 268         }
 269
 270         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 271     }
 272     else
 273     {
 274         if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
 275         {
 276             if( p_block ) block_Release( p_block );
 277         }
 278         else
 279         {
 280             DecoderDecode( p_dec, p_block );
 281         }
 282     }
 283 }
 284
 285 void input_DecoderDiscontinuity( decoder_t * p_dec, vlc_bool_t b_flush )
 286 {
 287     block_t *p_null;
 288
 289     /* Empty the fifo */
 290     if( p_dec->p_owner->b_own_thread && b_flush )
 291         block_FifoEmpty( p_dec->p_owner->p_fifo );
 292
 293     /* Send a special block */
 294     p_null = block_New( p_dec, 128 );
 295     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 296     /* FIXME check for p_packetizer or b_packitized from es_format_t of input ? */
 297     if( p_dec->p_owner->p_packetizer && b_flush )
 298         p_null->i_flags |= BLOCK_FLAG_CORRUPTED;
 299     memset( p_null->p_buffer, 0, p_null->i_buffer );
 300
 301     input_DecoderDecode( p_dec, p_null );
 302 }
 303
 304 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
 305 {
 306     if( p_dec->p_owner->b_own_thread && p_dec->p_owner->p_fifo->i_depth > 0 )
 307     {
 308         return VLC_FALSE;
 309     }
 310     return VLC_TRUE;
 311 }
 312
 313 /**
 314  * Create a decoder object
 315  *
 316  * \param p_input the input thread
 317  * \param p_es the es descriptor
 318  * \param i_object_type Object type as define in include/vlc_objects.h
 319  * \return the decoder object
 320  */
 321 static decoder_t * CreateDecoder( input_thread_t *p_input,
 322                                   es_format_t *fmt, int i_object_type )
 323 {
 324     decoder_t *p_dec;
 325
 326     p_dec = vlc_object_create( p_input, i_object_type );
 327     if( p_dec == NULL )
 328     {
 329         msg_Err( p_input, "out of memory" );
 330         return NULL;
 331     }
 332
 333     p_dec->pf_decode_audio = 0;
 334     p_dec->pf_decode_video = 0;
 335     p_dec->pf_decode_sub = 0;
 336     p_dec->pf_packetize = 0;
 337
 338    /* Initialize the decoder fifo */
 339     p_dec->p_module = NULL;
 340
 341     memset( &null_es_format, 0, sizeof(es_format_t) );
 342     es_format_Copy( &p_dec->fmt_in, fmt );
 343     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 344
 345     /* Allocate our private structure for the decoder */
 346     p_dec->p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 347     if( p_dec->p_owner == NULL )
 348     {
 349         msg_Err( p_dec, "out of memory" );
 350         return NULL;
 351     }
 352     p_dec->p_owner->b_own_thread = VLC_TRUE;
 353     p_dec->p_owner->i_preroll_end = -1;
 354     p_dec->p_owner->p_input = p_input;
 355     p_dec->p_owner->p_aout = NULL;
 356     p_dec->p_owner->p_aout_input = NULL;
 357     p_dec->p_owner->p_vout = NULL;
 358     p_dec->p_owner->p_spu_vout = NULL;
 359     p_dec->p_owner->i_spu_channel = 0;
 360     p_dec->p_owner->p_sout = p_input->p->p_sout;
 361     p_dec->p_owner->p_sout_input = NULL;
 362     p_dec->p_owner->p_packetizer = NULL;
 363
 364     /* decoder fifo */
 365     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 366     {
 367         msg_Err( p_dec, "out of memory" );
 368         return NULL;
 369     }
 370
 371     /* Set buffers allocation callbacks for the decoders */
 372     p_dec->pf_aout_buffer_new = aout_new_buffer;
 373     p_dec->pf_aout_buffer_del = aout_del_buffer;
 374     p_dec->pf_vout_buffer_new = vout_new_buffer;
 375     p_dec->pf_vout_buffer_del = vout_del_buffer;
 376     p_dec->pf_picture_link    = vout_link_picture;
 377     p_dec->pf_picture_unlink  = vout_unlink_picture;
 378     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 379     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 380
 381     vlc_object_attach( p_dec, p_input );
 382
 383     /* Find a suitable decoder/packetizer module */
 384     if( i_object_type == VLC_OBJECT_DECODER )
 385         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 386     else
 387         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 388
 389     /* Check if decoder requires already packetized data */
 390     if( i_object_type == VLC_OBJECT_DECODER &&
 391         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 392     {
 393         p_dec->p_owner->p_packetizer =
 394             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 395         if( p_dec->p_owner->p_packetizer )
 396         {
 397             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 398                             &p_dec->fmt_in );
 399
 400             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 401                             &null_es_format );
 402
 403             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 404
 405             p_dec->p_owner->p_packetizer->p_module =
 406                 module_Need( p_dec->p_owner->p_packetizer,
 407                              "packetizer", "$packetizer", 0 );
 408
 409             if( !p_dec->p_owner->p_packetizer->p_module )
 410             {
 411                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 412                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 413                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 414             }
 415         }
 416     }
 417
 418     /* Copy ourself the input replay gain */
 419     if( fmt->i_cat == AUDIO_ES )
 420     {
 421         int i;
 422         for( i = 0; i < AUDIO_REPLAY_GAIN_MAX; i++ )
 423         {
 424             if( !p_dec->fmt_out.audio_replay_gain.pb_peak[i] )
 425             {
 426                 p_dec->fmt_out.audio_replay_gain.pb_peak[i] = fmt->audio_replay_gain.pb_peak[i];
 427                 p_dec->fmt_out.audio_replay_gain.pf_peak[i] = fmt->audio_replay_gain.pf_peak[i];
 428             }
 429             if( !p_dec->fmt_out.audio_replay_gain.pb_gain[i] )
 430             {
 431                 p_dec->fmt_out.audio_replay_gain.pb_gain[i] = fmt->audio_replay_gain.pb_gain[i];
 432                 p_dec->fmt_out.audio_replay_gain.pf_gain[i] = fmt->audio_replay_gain.pf_gain[i];
 433             }
 434         }
 435     }
 436     return p_dec;
 437 }
 438
 439 /**
 440  * The decoding main loop
 441  *
 442  * \param p_dec the decoder
 443  * \return 0
 444  */
 445 static int DecoderThread( decoder_t * p_dec )
 446 {
 447     block_t *p_block;
 448
 449     /* The decoder's main loop */
 450     while( !p_dec->b_die && !p_dec->b_error )
 451     {
 452         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 453         {
 454             p_dec->b_error = 1;
 455             break;
 456         }
 457         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 458         {
 459             break;
 460         }
 461     }
 462
 463     while( !p_dec->b_die )
 464     {
 465         /* Trash all received PES packets */
 466         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 467         if( p_block ) block_Release( p_block );
 468     }
 469
 470     /* We do it here because of the dll loader that wants close() in the
 471      * same thread than open()/decode() */
 472     module_Unneed( p_dec, p_dec->p_module );
 473
 474     return 0;
 475 }
 476
 477 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 478 {
 479     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 480         *pi_preroll = INT64_MAX;
 481     else if( p->i_pts > 0 )
 482         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 483     else if( p->i_dts > 0 )
 484         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 485 }
 486 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 487 {
 488     input_thread_t *p_input = p_dec->p_owner->p_input;
 489     const int i_rate = p_block->i_rate;
 490     aout_buffer_t *p_aout_buf;
 491
 492     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 493     {
 494         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 495         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 496         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 497
 498         if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 499         {
 500             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 501                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 502             continue;
 503         }
 504
 505         if( p_dec->p_owner->i_preroll_end > 0 )
 506         {
 507             /* FIXME TODO flush audio output (don't know how to do that) */
 508             msg_Dbg( p_dec, "End of audio preroll" );
 509             p_dec->p_owner->i_preroll_end = -1;
 510         }
 511         aout_DecPlay( p_dec->p_owner->p_aout,
 512                       p_dec->p_owner->p_aout_input,
 513                       p_aout_buf, i_rate );
 514     }
 515 }
 516 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 517 {
 518     vlc_mutex_lock( &p_vout->picture_lock );
 519
 520     if( p_pic->i_status == READY_PICTURE )
 521     {
 522         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 523         p_pic->date = 1;
 524     }
 525     else if( p_pic->i_refcount > 0 )
 526     {
 527         p_pic->i_status = DISPLAYED_PICTURE;
 528     }
 529     else
 530     {
 531         p_pic->i_status = DESTROYED_PICTURE;
 532         p_vout->i_heap_size--;
 533     }
 534
 535     vlc_mutex_unlock( &p_vout->picture_lock );
 536 }
 537 static void VoutFlushPicture( vout_thread_t *p_vout )
 538 {
 539     int i;
 540     vlc_mutex_lock( &p_vout->picture_lock );
 541     for( i = 0; i < p_vout->render.i_pictures; i++ )
 542     {
 543         picture_t *p_pic = p_vout->render.pp_picture[i];
 544
 545         if( p_pic->i_status == READY_PICTURE ||
 546             p_pic->i_status == DISPLAYED_PICTURE )
 547         {
 548             /* We cannot change picture status if it is in READY_PICTURE state,
 549              * Just make sure they won't be displayed */
 550             p_pic->date = 1;
 551         }
 552     }
 553     vlc_mutex_unlock( &p_vout->picture_lock );
 554 }
 555 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
 556 {
 557     input_thread_t *p_input = p_dec->p_owner->p_input;
 558     picture_t *p_pic;
 559
 560     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 561     {
 562         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 563         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
 564         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 565
 566         if( p_pic->date < p_dec->p_owner->i_preroll_end )
 567         {
 568             VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
 569             continue;
 570         }
 571
 572         if( p_dec->p_owner->i_preroll_end > 0 )
 573         {
 574             msg_Dbg( p_dec, "End of video preroll" );
 575             if( p_dec->p_owner->p_vout )
 576                 VoutFlushPicture( p_dec->p_owner->p_vout );
 577             /* */
 578             p_dec->p_owner->i_preroll_end = -1;
 579         }
 580
 581         vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 582                           p_pic->date );
 583         vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 584     }
 585 }
 586
 587 /**
 588  * Decode a block
 589  *
 590  * \param p_dec the decoder object
 591  * \param p_block the block to decode
 592  * \return VLC_SUCCESS or an error code
 593  */
 594 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 595 {
 596     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 597     const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
 598
 599     if( p_block && p_block->i_buffer <= 0 )
 600     {
 601         block_Release( p_block );
 602         return VLC_SUCCESS;
 603     }
 604
 605     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 606     {
 607         block_t *p_sout_block;
 608
 609         while( ( p_sout_block =
 610                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 611         {
 612             if( !p_dec->p_owner->p_sout_input )
 613             {
 614                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 615
 616                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 617                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 618                 if( p_dec->fmt_in.psz_language )
 619                 {
 620                     if( p_dec->p_owner->sout.psz_language )
 621                         free( p_dec->p_owner->sout.psz_language );
 622                     p_dec->p_owner->sout.psz_language =
 623                         strdup( p_dec->fmt_in.psz_language );
 624                 }
 625
 626                 p_dec->p_owner->p_sout_input =
 627                     sout_InputNew( p_dec->p_owner->p_sout,
 628                                    &p_dec->p_owner->sout );
 629
 630                 if( p_dec->p_owner->p_sout_input == NULL )
 631                 {
 632                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 633                              (char *)&p_dec->p_owner->sout.i_codec );
 634                     p_dec->b_error = VLC_TRUE;
 635
 636                     while( p_sout_block )
 637                     {
 638                         block_t *p_next = p_sout_block->p_next;
 639                         block_Release( p_sout_block );
 640                         p_sout_block = p_next;
 641                     }
 642                     break;
 643                 }
 644             }
 645
 646             while( p_sout_block )
 647             {
 648                 block_t *p_next = p_sout_block->p_next;
 649
 650                 p_sout_block->p_next = NULL;
 651                 p_sout_block->i_rate = i_rate;
 652
 653                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 654                                       p_sout_block );
 655
 656                 p_sout_block = p_next;
 657             }
 658
 659             /* For now it's enough, as only sout inpact on this flag */
 660             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 661                 p_dec->p_owner->p_input->p->b_out_pace_control )
 662             {
 663                 msg_Dbg( p_dec, "switching to sync mode" );
 664                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 665             }
 666             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 667                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 668             {
 669                 msg_Dbg( p_dec, "switching to async mode" );
 670                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 671             }
 672         }
 673     }
 674     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 675     {
 676         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 677
 678         if( p_dec->p_owner->p_packetizer )
 679         {
 680             block_t *p_packetized_block;
 681             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 682
 683             while( (p_packetized_block =
 684                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 685             {
 686                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 687                 {
 688                     es_format_Clean( &p_dec->fmt_in );
 689                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 690                 }
 691
 692                 while( p_packetized_block )
 693                 {
 694                     block_t *p_next = p_packetized_block->p_next;
 695                     p_packetized_block->p_next = NULL;
 696                     p_packetized_block->i_rate = i_rate;
 697
 698                     DecoderDecodeAudio( p_dec, p_packetized_block );
 699
 700                     p_packetized_block = p_next;
 701                 }
 702             }
 703         }
 704         else
 705         {
 706             DecoderDecodeAudio( p_dec, p_block );
 707         }
 708     }
 709     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 710     {
 711         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 712
 713         if( p_dec->p_owner->p_packetizer )
 714         {
 715             block_t *p_packetized_block;
 716             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 717
 718             while( (p_packetized_block =
 719                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 720             {
 721                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 722                 {
 723                     es_format_Clean( &p_dec->fmt_in );
 724                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 725                 }
 726
 727                 while( p_packetized_block )
 728                 {
 729                     block_t *p_next = p_packetized_block->p_next;
 730                     p_packetized_block->p_next = NULL;
 731                     p_packetized_block->i_rate = i_rate;
 732
 733                     DecoderDecodeVideo( p_dec, p_packetized_block );
 734
 735                     p_packetized_block = p_next;
 736                 }
 737             }
 738         }
 739         else
 740         {
 741             DecoderDecodeVideo( p_dec, p_block );
 742         }
 743     }
 744     else if( p_dec->fmt_in.i_cat == SPU_ES )
 745     {
 746         input_thread_t *p_input = p_dec->p_owner->p_input;
 747         vout_thread_t *p_vout;
 748         subpicture_t *p_spu;
 749
 750         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 751
 752         while( (p_spu = p_dec->pf_decode_sub( p_dec, &p_block ) ) )
 753         {
 754             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 755             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
 756             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 757
 758             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 759             if( p_vout && p_sys->p_spu_vout == p_vout )
 760             {
 761                 /* Prerool does not work very well with subtitle */
 762                 if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 763                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_dec->p_owner->i_preroll_end ) )
 764                     spu_DestroySubpicture( p_vout->p_spu, p_spu );
 765                 else
 766                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 767             }
 768             else
 769             {
 770                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
 771             }
 772             if( p_vout )
 773                 vlc_object_release( p_vout );
 774         }
 775     }
 776     else
 777     {
 778         msg_Err( p_dec, "unknown ES format" );
 779         p_dec->b_error = 1;
 780     }
 781
 782     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 783 }
 784
 785 /**
 786  * Destroys a decoder object
 787  *
 788  * \param p_dec the decoder object
 789  * \return nothing
 790  */
 791 static void DeleteDecoder( decoder_t * p_dec )
 792 {
 793     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 794              (char*)&p_dec->fmt_in.i_codec,
 795              p_dec->p_owner->p_fifo->i_depth );
 796
 797     /* Free all packets still in the decoder fifo. */
 798     block_FifoEmpty( p_dec->p_owner->p_fifo );
 799     block_FifoRelease( p_dec->p_owner->p_fifo );
 800
 801     /* Cleanup */
 802     if( p_dec->p_owner->p_aout_input )
 803         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 804
 805     if( p_dec->p_owner->p_vout )
 806     {
 807         int i_pic;
 808
 809 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 810         /* Hack to make sure all the the pictures are freed by the decoder */
 811         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 812              i_pic++ )
 813         {
 814             if( p_pic->i_status == RESERVED_PICTURE )
 815                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 816             if( p_pic->i_refcount > 0 )
 817                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 818         }
 819 #undef p_pic
 820
 821         /* We are about to die. Reattach video output to p_vlc. */
 822         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
 823     }
 824
 825     if( p_dec->p_owner->p_sout_input )
 826     {
 827         sout_InputDelete( p_dec->p_owner->p_sout_input );
 828         es_format_Clean( &p_dec->p_owner->sout );
 829     }
 830
 831     if( p_dec->fmt_in.i_cat == SPU_ES )
 832     {
 833         vout_thread_t *p_vout;
 834
 835         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 836         if( p_vout )
 837         {
 838             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
 839                          p_dec->p_owner->i_spu_channel );
 840             vlc_object_release( p_vout );
 841         }
 842     }
 843
 844     es_format_Clean( &p_dec->fmt_in );
 845     es_format_Clean( &p_dec->fmt_out );
 846
 847     if( p_dec->p_owner->p_packetizer )
 848     {
 849         module_Unneed( p_dec->p_owner->p_packetizer,
 850                        p_dec->p_owner->p_packetizer->p_module );
 851         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 852         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 853         vlc_object_detach( p_dec->p_owner->p_packetizer );
 854         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 855     }
 856
 857     vlc_object_detach( p_dec );
 858
 859     free( p_dec->p_owner );
 860 }
 861
 862 /*****************************************************************************
 863  * Buffers allocation callbacks for the decoders
 864  *****************************************************************************/
 865 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 866 {
 867     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 868     aout_buffer_t *p_buffer;
 869
 870     if( p_sys->p_aout_input != NULL &&
 871         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 872           p_dec->fmt_out.audio.i_original_channels !=
 873               p_sys->audio.i_original_channels ||
 874           p_dec->fmt_out.audio.i_bytes_per_frame !=
 875               p_sys->audio.i_bytes_per_frame ) )
 876     {
 877         /* Parameters changed, restart the aout */
 878         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 879         p_sys->p_aout_input = NULL;
 880     }
 881
 882     if( p_sys->p_aout_input == NULL )
 883     {
 884         audio_sample_format_t format;
 885         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
 886
 887         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 888         p_sys->audio = p_dec->fmt_out.audio;
 889
 890         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
 891         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
 892                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
 893         {
 894             if ( i_force_dolby == 1 )
 895             {
 896                 format.i_original_channels = format.i_original_channels |
 897                                              AOUT_CHAN_DOLBYSTEREO;
 898             }
 899             else /* i_force_dolby == 2 */
 900             {
 901                 format.i_original_channels = format.i_original_channels &
 902                                              ~AOUT_CHAN_DOLBYSTEREO;
 903             }
 904         }
 905
 906         p_sys->p_aout_input =
 907             aout_DecNew( p_dec, &p_sys->p_aout, &format, &p_dec->fmt_out.audio_replay_gain );
 908         if( p_sys->p_aout_input == NULL )
 909         {
 910             msg_Err( p_dec, "failed to create audio output" );
 911             p_dec->b_error = VLC_TRUE;
 912             return NULL;
 913         }
 914         p_dec->fmt_out.audio.i_bytes_per_frame =
 915             p_sys->audio.i_bytes_per_frame;
 916     }
 917
 918     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 919                                   i_samples );
 920
 921     return p_buffer;
 922 }
 923
 924 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 925 {
 926     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 927                           p_dec->p_owner->p_aout_input, p_buffer );
 928 }
 929
 930 static picture_t *vout_new_buffer( decoder_t *p_dec )
 931 {
 932     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 933     picture_t *p_pic;
 934
 935     if( p_sys->p_vout == NULL ||
 936         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 937         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 938         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 939         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 940     {
 941         if( !p_dec->fmt_out.video.i_width ||
 942             !p_dec->fmt_out.video.i_height )
 943         {
 944             /* Can't create a new vout without display size */
 945             return NULL;
 946         }
 947
 948         if( !p_dec->fmt_out.video.i_visible_width ||
 949             !p_dec->fmt_out.video.i_visible_height )
 950         {
 951             if( p_dec->fmt_in.video.i_visible_width &&
 952                 p_dec->fmt_in.video.i_visible_height )
 953             {
 954                 p_dec->fmt_out.video.i_visible_width =
 955                     p_dec->fmt_in.video.i_visible_width;
 956                 p_dec->fmt_out.video.i_visible_height =
 957                     p_dec->fmt_in.video.i_visible_height;
 958             }
 959             else
 960             {
 961                 p_dec->fmt_out.video.i_visible_width =
 962                     p_dec->fmt_out.video.i_width;
 963                 p_dec->fmt_out.video.i_visible_height =
 964                     p_dec->fmt_out.video.i_height;
 965             }
 966         }
 967
 968         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
 969             var_CreateGetBool( p_dec, "hdtv-fix" ) )
 970         {
 971             p_dec->fmt_out.video.i_visible_height = 1080;
 972             p_dec->fmt_out.video.i_sar_num *= 135;
 973             p_dec->fmt_out.video.i_sar_den *= 136;
 974             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
 975         }
 976
 977         if( !p_dec->fmt_out.video.i_sar_num ||
 978             !p_dec->fmt_out.video.i_sar_den )
 979         {
 980             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
 981               p_dec->fmt_out.video.i_visible_height;
 982
 983             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
 984               p_dec->fmt_out.video.i_visible_width;
 985         }
 986
 987         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
 988                      &p_dec->fmt_out.video.i_sar_den,
 989                      p_dec->fmt_out.video.i_sar_num,
 990                      p_dec->fmt_out.video.i_sar_den, 50000 );
 991
 992         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 993         p_sys->video = p_dec->fmt_out.video;
 994
 995         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 996                                       &p_dec->fmt_out.video );
 997         if( p_sys->p_vout == NULL )
 998         {
 999             msg_Err( p_dec, "failed to create video output" );
1000             p_dec->b_error = VLC_TRUE;
1001             return NULL;
1002         }
1003
1004         if( p_sys->video.i_rmask )
1005             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
1006         if( p_sys->video.i_gmask )
1007             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
1008         if( p_sys->video.i_bmask )
1009             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
1010     }
1011
1012     /* Get a new picture */
1013     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
1014     {
1015         int i_pic, i_ready_pic = 0;
1016
1017         if( p_dec->b_die || p_dec->b_error )
1018         {
1019             return NULL;
1020         }
1021
1022 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1023         /* Check the decoder doesn't leak pictures */
1024         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1025              i_pic++ )
1026         {
1027             if( p_pic->i_status == READY_PICTURE )
1028             {
1029                 if( i_ready_pic++ > 0 ) break;
1030                 else continue;
1031             }
1032
1033             if( p_pic->i_status != DISPLAYED_PICTURE &&
1034                 p_pic->i_status != RESERVED_PICTURE &&
1035                 p_pic->i_status != READY_PICTURE ) break;
1036
1037             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1038                 break;
1039         }
1040         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1041         {
1042             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1043
1044             /* Just free all the pictures */
1045             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1046                  i_pic++ )
1047             {
1048                 if( p_pic->i_status == RESERVED_PICTURE )
1049                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1050                 if( p_pic->i_refcount > 0 )
1051                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1052             }
1053         }
1054 #undef p_pic
1055
1056         msleep( VOUT_OUTMEM_SLEEP );
1057     }
1058
1059     return p_pic;
1060 }
1061
1062 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1063 {
1064     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1065 }
1066
1067 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1068 {
1069     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1070 }
1071
1072 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1073 {
1074     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1075 }
1076
1077 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1078 {
1079     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1080     vout_thread_t *p_vout = NULL;
1081     subpicture_t *p_subpic;
1082     int i_attempts = 30;
1083
1084     while( i_attempts-- )
1085     {
1086         if( p_dec->b_die || p_dec->b_error ) break;
1087
1088         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1089         if( p_vout ) break;
1090
1091         msleep( VOUT_DISPLAY_DELAY );
1092     }
1093
1094     if( !p_vout )
1095     {
1096         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1097         return NULL;
1098     }
1099
1100     if( p_sys->p_spu_vout != p_vout )
1101     {
1102         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1103                      &p_sys->i_spu_channel );
1104         p_sys->p_spu_vout = p_vout;
1105     }
1106
1107     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1108     if( p_subpic )
1109     {
1110         p_subpic->i_channel = p_sys->i_spu_channel;
1111     }
1112
1113     vlc_object_release( p_vout );
1114
1115     return p_subpic;
1116 }
1117
1118 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1119 {
1120     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1121     vout_thread_t *p_vout = NULL;
1122
1123     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1124     if( !p_vout || p_sys->p_spu_vout != p_vout )
1125     {
1126         if( p_vout )
1127             vlc_object_release( p_vout );
1128         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1129         return;
1130     }
1131
1132     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1133
1134     vlc_object_release( p_vout );
1135 }
1136