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     return p_dec;
 419 }
 420
 421 /**
 422  * The decoding main loop
 423  *
 424  * \param p_dec the decoder
 425  * \return 0
 426  */
 427 static int DecoderThread( decoder_t * p_dec )
 428 {
 429     block_t *p_block;
 430
 431     /* The decoder's main loop */
 432     while( !p_dec->b_die && !p_dec->b_error )
 433     {
 434         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 435         {
 436             p_dec->b_error = 1;
 437             break;
 438         }
 439         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 440         {
 441             break;
 442         }
 443     }
 444
 445     while( !p_dec->b_die )
 446     {
 447         /* Trash all received PES packets */
 448         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 449         if( p_block ) block_Release( p_block );
 450     }
 451
 452     /* We do it here because of the dll loader that wants close() in the
 453      * same thread than open()/decode() */
 454     module_Unneed( p_dec, p_dec->p_module );
 455
 456     return 0;
 457 }
 458
 459 static inline void DecoderUpdatePreroll( int64_t *pi_preroll, const block_t *p )
 460 {
 461     if( p->i_flags & (BLOCK_FLAG_PREROLL|BLOCK_FLAG_DISCONTINUITY) )
 462         *pi_preroll = INT64_MAX;
 463     else if( p->i_pts > 0 )
 464         *pi_preroll = __MIN( *pi_preroll, p->i_pts );
 465     else if( p->i_dts > 0 )
 466         *pi_preroll = __MIN( *pi_preroll, p->i_dts );
 467 }
 468 static void DecoderDecodeAudio( decoder_t *p_dec, block_t *p_block )
 469 {
 470     input_thread_t *p_input = p_dec->p_owner->p_input;
 471     const int i_rate = p_block->i_rate;
 472     aout_buffer_t *p_aout_buf;
 473
 474     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 475     {
 476         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 477         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_audio, 1, NULL );
 478         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 479
 480         if( p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 481         {
 482             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 483                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 484             continue;
 485         }
 486
 487         if( p_dec->p_owner->i_preroll_end > 0 )
 488         {
 489             /* FIXME TODO flush audio output (don't know how to do that) */
 490             msg_Dbg( p_dec, "End of audio preroll" );
 491             p_dec->p_owner->i_preroll_end = -1;
 492         }
 493         aout_DecPlay( p_dec->p_owner->p_aout,
 494                       p_dec->p_owner->p_aout_input,
 495                       p_aout_buf, i_rate );
 496     }
 497 }
 498 static void VoutDisplayedPicture( vout_thread_t *p_vout, picture_t *p_pic )
 499 {
 500     vlc_mutex_lock( &p_vout->picture_lock );
 501
 502     if( p_pic->i_status == READY_PICTURE )
 503     {
 504         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 505         p_pic->date = 1;
 506     }
 507     else if( p_pic->i_refcount > 0 )
 508     {
 509         p_pic->i_status = DISPLAYED_PICTURE;
 510     }
 511     else
 512     {
 513         p_pic->i_status = DESTROYED_PICTURE;
 514         p_vout->i_heap_size--;
 515     }
 516
 517     vlc_mutex_unlock( &p_vout->picture_lock );
 518 }
 519 static void VoutFlushPicture( vout_thread_t *p_vout )
 520 {
 521     int i;
 522     vlc_mutex_lock( &p_vout->picture_lock );
 523     for( i = 0; i < p_vout->render.i_pictures; i++ )
 524     {
 525         picture_t *p_pic = p_vout->render.pp_picture[i];
 526
 527         if( p_pic->i_status == READY_PICTURE ||
 528             p_pic->i_status == DISPLAYED_PICTURE )
 529         {
 530             /* We cannot change picture status if it is in READY_PICTURE state,
 531              * Just make sure they won't be displayed */
 532             p_pic->date = 1;
 533         }
 534     }
 535     vlc_mutex_unlock( &p_vout->picture_lock );
 536 }
 537 static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
 538 {
 539     input_thread_t *p_input = p_dec->p_owner->p_input;
 540     picture_t *p_pic;
 541
 542     while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 543     {
 544         vlc_mutex_lock( &p_input->p->counters.counters_lock );
 545         stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_video, 1, NULL );
 546         vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 547
 548         if( p_pic->date < p_dec->p_owner->i_preroll_end )
 549         {
 550             VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
 551             continue;
 552         }
 553
 554         if( p_dec->p_owner->i_preroll_end > 0 )
 555         {
 556             msg_Dbg( p_dec, "End of video preroll" );
 557             if( p_dec->p_owner->p_vout )
 558                 VoutFlushPicture( p_dec->p_owner->p_vout );
 559             /* */
 560             p_dec->p_owner->i_preroll_end = -1;
 561         }
 562
 563         vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 564                           p_pic->date );
 565         vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 566     }
 567 }
 568
 569 /**
 570  * Decode a block
 571  *
 572  * \param p_dec the decoder object
 573  * \param p_block the block to decode
 574  * \return VLC_SUCCESS or an error code
 575  */
 576 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 577 {
 578     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 579     const int i_rate = p_block ? p_block->i_rate : INPUT_RATE_DEFAULT;
 580
 581     if( p_block && p_block->i_buffer <= 0 )
 582     {
 583         block_Release( p_block );
 584         return VLC_SUCCESS;
 585     }
 586
 587     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 588     {
 589         block_t *p_sout_block;
 590
 591         while( ( p_sout_block =
 592                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 593         {
 594             if( !p_dec->p_owner->p_sout_input )
 595             {
 596                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 597
 598                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 599                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 600                 if( p_dec->fmt_in.psz_language )
 601                 {
 602                     if( p_dec->p_owner->sout.psz_language )
 603                         free( p_dec->p_owner->sout.psz_language );
 604                     p_dec->p_owner->sout.psz_language =
 605                         strdup( p_dec->fmt_in.psz_language );
 606                 }
 607
 608                 p_dec->p_owner->p_sout_input =
 609                     sout_InputNew( p_dec->p_owner->p_sout,
 610                                    &p_dec->p_owner->sout );
 611
 612                 if( p_dec->p_owner->p_sout_input == NULL )
 613                 {
 614                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 615                              (char *)&p_dec->p_owner->sout.i_codec );
 616                     p_dec->b_error = VLC_TRUE;
 617
 618                     while( p_sout_block )
 619                     {
 620                         block_t *p_next = p_sout_block->p_next;
 621                         block_Release( p_sout_block );
 622                         p_sout_block = p_next;
 623                     }
 624                     break;
 625                 }
 626             }
 627
 628             while( p_sout_block )
 629             {
 630                 block_t *p_next = p_sout_block->p_next;
 631
 632                 p_sout_block->p_next = NULL;
 633                 p_sout_block->i_rate = i_rate;
 634
 635                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 636                                       p_sout_block );
 637
 638                 p_sout_block = p_next;
 639             }
 640
 641             /* For now it's enough, as only sout inpact on this flag */
 642             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 643                 p_dec->p_owner->p_input->p->b_out_pace_control )
 644             {
 645                 msg_Dbg( p_dec, "switching to sync mode" );
 646                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 647             }
 648             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 649                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 650             {
 651                 msg_Dbg( p_dec, "switching to async mode" );
 652                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 653             }
 654         }
 655     }
 656     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 657     {
 658         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 659
 660         if( p_dec->p_owner->p_packetizer )
 661         {
 662             block_t *p_packetized_block;
 663             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 664
 665             while( (p_packetized_block =
 666                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 667             {
 668                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 669                 {
 670                     es_format_Clean( &p_dec->fmt_in );
 671                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 672                 }
 673
 674                 while( p_packetized_block )
 675                 {
 676                     block_t *p_next = p_packetized_block->p_next;
 677                     p_packetized_block->p_next = NULL;
 678                     p_packetized_block->i_rate = i_rate;
 679
 680                     DecoderDecodeAudio( p_dec, p_packetized_block );
 681
 682                     p_packetized_block = p_next;
 683                 }
 684             }
 685         }
 686         else
 687         {
 688             DecoderDecodeAudio( p_dec, p_block );
 689         }
 690     }
 691     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 692     {
 693         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 694
 695         if( p_dec->p_owner->p_packetizer )
 696         {
 697             block_t *p_packetized_block;
 698             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 699
 700             while( (p_packetized_block =
 701                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 702             {
 703                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 704                 {
 705                     es_format_Clean( &p_dec->fmt_in );
 706                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 707                 }
 708
 709                 while( p_packetized_block )
 710                 {
 711                     block_t *p_next = p_packetized_block->p_next;
 712                     p_packetized_block->p_next = NULL;
 713                     p_packetized_block->i_rate = i_rate;
 714
 715                     DecoderDecodeVideo( p_dec, p_packetized_block );
 716
 717                     p_packetized_block = p_next;
 718                 }
 719             }
 720         }
 721         else
 722         {
 723             DecoderDecodeVideo( p_dec, p_block );
 724         }
 725     }
 726     else if( p_dec->fmt_in.i_cat == SPU_ES )
 727     {
 728         input_thread_t *p_input = p_dec->p_owner->p_input;
 729         vout_thread_t *p_vout;
 730         subpicture_t *p_spu;
 731
 732         DecoderUpdatePreroll( &p_dec->p_owner->i_preroll_end, p_block );
 733
 734         while( (p_spu = p_dec->pf_decode_sub( p_dec, &p_block ) ) )
 735         {
 736             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 737             stats_UpdateInteger( p_dec, p_input->p->counters.p_decoded_sub, 1, NULL );
 738             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 739
 740             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 741             if( p_vout && p_sys->p_spu_vout == p_vout )
 742             {
 743                 /* Prerool does not work very well with subtitle */
 744                 if( p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 745                     ( p_spu->i_stop <= 0 || p_spu->i_stop < p_dec->p_owner->i_preroll_end ) )
 746                     spu_DestroySubpicture( p_vout->p_spu, p_spu );
 747                 else
 748                     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 749             }
 750             else
 751             {
 752                 msg_Warn( p_dec, "no vout found, leaking subpicture" );
 753             }
 754             if( p_vout )
 755                 vlc_object_release( p_vout );
 756         }
 757     }
 758     else
 759     {
 760         msg_Err( p_dec, "unknown ES format" );
 761         p_dec->b_error = 1;
 762     }
 763
 764     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 765 }
 766
 767 /**
 768  * Destroys a decoder object
 769  *
 770  * \param p_dec the decoder object
 771  * \return nothing
 772  */
 773 static void DeleteDecoder( decoder_t * p_dec )
 774 {
 775     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 776              (char*)&p_dec->fmt_in.i_codec,
 777              p_dec->p_owner->p_fifo->i_depth );
 778
 779     /* Free all packets still in the decoder fifo. */
 780     block_FifoEmpty( p_dec->p_owner->p_fifo );
 781     block_FifoRelease( p_dec->p_owner->p_fifo );
 782
 783     /* Cleanup */
 784     if( p_dec->p_owner->p_aout_input )
 785         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 786
 787     if( p_dec->p_owner->p_vout )
 788     {
 789         int i_pic;
 790
 791 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 792         /* Hack to make sure all the the pictures are freed by the decoder */
 793         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 794              i_pic++ )
 795         {
 796             if( p_pic->i_status == RESERVED_PICTURE )
 797                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 798             if( p_pic->i_refcount > 0 )
 799                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 800         }
 801 #undef p_pic
 802
 803         /* We are about to die. Reattach video output to p_vlc. */
 804         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
 805     }
 806
 807     if( p_dec->p_owner->p_sout_input )
 808     {
 809         sout_InputDelete( p_dec->p_owner->p_sout_input );
 810         es_format_Clean( &p_dec->p_owner->sout );
 811     }
 812
 813     if( p_dec->fmt_in.i_cat == SPU_ES )
 814     {
 815         vout_thread_t *p_vout;
 816
 817         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 818         if( p_vout )
 819         {
 820             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
 821                          p_dec->p_owner->i_spu_channel );
 822             vlc_object_release( p_vout );
 823         }
 824     }
 825
 826     es_format_Clean( &p_dec->fmt_in );
 827     es_format_Clean( &p_dec->fmt_out );
 828
 829     if( p_dec->p_owner->p_packetizer )
 830     {
 831         module_Unneed( p_dec->p_owner->p_packetizer,
 832                        p_dec->p_owner->p_packetizer->p_module );
 833         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 834         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 835         vlc_object_detach( p_dec->p_owner->p_packetizer );
 836         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 837     }
 838
 839     vlc_object_detach( p_dec );
 840
 841     free( p_dec->p_owner );
 842 }
 843
 844 /*****************************************************************************
 845  * Buffers allocation callbacks for the decoders
 846  *****************************************************************************/
 847 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 848 {
 849     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 850     aout_buffer_t *p_buffer;
 851
 852     if( p_sys->p_aout_input != NULL &&
 853         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 854           p_dec->fmt_out.audio.i_original_channels !=
 855               p_sys->audio.i_original_channels ||
 856           p_dec->fmt_out.audio.i_bytes_per_frame !=
 857               p_sys->audio.i_bytes_per_frame ) )
 858     {
 859         /* Parameters changed, restart the aout */
 860         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 861         p_sys->p_aout_input = NULL;
 862     }
 863
 864     if( p_sys->p_aout_input == NULL )
 865     {
 866         audio_sample_format_t format;
 867         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
 868
 869         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 870         p_sys->audio = p_dec->fmt_out.audio;
 871
 872         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
 873         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
 874                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
 875         {
 876             if ( i_force_dolby == 1 )
 877             {
 878                 format.i_original_channels = format.i_original_channels |
 879                                              AOUT_CHAN_DOLBYSTEREO;
 880             }
 881             else /* i_force_dolby == 2 */
 882             {
 883                 format.i_original_channels = format.i_original_channels &
 884                                              ~AOUT_CHAN_DOLBYSTEREO;
 885             }
 886         }
 887
 888         p_sys->p_aout_input =
 889             aout_DecNew( p_dec, &p_sys->p_aout, &format );
 890         if( p_sys->p_aout_input == NULL )
 891         {
 892             msg_Err( p_dec, "failed to create audio output" );
 893             p_dec->b_error = VLC_TRUE;
 894             return NULL;
 895         }
 896         p_dec->fmt_out.audio.i_bytes_per_frame =
 897             p_sys->audio.i_bytes_per_frame;
 898     }
 899
 900     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 901                                   i_samples );
 902
 903     return p_buffer;
 904 }
 905
 906 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 907 {
 908     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 909                           p_dec->p_owner->p_aout_input, p_buffer );
 910 }
 911
 912 static picture_t *vout_new_buffer( decoder_t *p_dec )
 913 {
 914     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 915     picture_t *p_pic;
 916
 917     if( p_sys->p_vout == NULL ||
 918         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 919         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 920         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 921         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 922     {
 923         if( !p_dec->fmt_out.video.i_width ||
 924             !p_dec->fmt_out.video.i_height )
 925         {
 926             /* Can't create a new vout without display size */
 927             return NULL;
 928         }
 929
 930         if( !p_dec->fmt_out.video.i_visible_width ||
 931             !p_dec->fmt_out.video.i_visible_height )
 932         {
 933             if( p_dec->fmt_in.video.i_visible_width &&
 934                 p_dec->fmt_in.video.i_visible_height )
 935             {
 936                 p_dec->fmt_out.video.i_visible_width =
 937                     p_dec->fmt_in.video.i_visible_width;
 938                 p_dec->fmt_out.video.i_visible_height =
 939                     p_dec->fmt_in.video.i_visible_height;
 940             }
 941             else
 942             {
 943                 p_dec->fmt_out.video.i_visible_width =
 944                     p_dec->fmt_out.video.i_width;
 945                 p_dec->fmt_out.video.i_visible_height =
 946                     p_dec->fmt_out.video.i_height;
 947             }
 948         }
 949
 950         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
 951             var_CreateGetBool( p_dec, "hdtv-fix" ) )
 952         {
 953             p_dec->fmt_out.video.i_visible_height = 1080;
 954             p_dec->fmt_out.video.i_sar_num *= 135;
 955             p_dec->fmt_out.video.i_sar_den *= 136;
 956             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
 957         }
 958
 959         if( !p_dec->fmt_out.video.i_sar_num ||
 960             !p_dec->fmt_out.video.i_sar_den )
 961         {
 962             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
 963               p_dec->fmt_out.video.i_visible_height;
 964
 965             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
 966               p_dec->fmt_out.video.i_visible_width;
 967         }
 968
 969         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
 970                      &p_dec->fmt_out.video.i_sar_den,
 971                      p_dec->fmt_out.video.i_sar_num,
 972                      p_dec->fmt_out.video.i_sar_den, 50000 );
 973
 974         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 975         p_sys->video = p_dec->fmt_out.video;
 976
 977         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 978                                       &p_dec->fmt_out.video );
 979         if( p_sys->p_vout == NULL )
 980         {
 981             msg_Err( p_dec, "failed to create video output" );
 982             p_dec->b_error = VLC_TRUE;
 983             return NULL;
 984         }
 985
 986         if( p_sys->video.i_rmask )
 987             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
 988         if( p_sys->video.i_gmask )
 989             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
 990         if( p_sys->video.i_bmask )
 991             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
 992     }
 993
 994     /* Get a new picture */
 995     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 996     {
 997         int i_pic, i_ready_pic = 0;
 998
 999         if( p_dec->b_die || p_dec->b_error )
1000         {
1001             return NULL;
1002         }
1003
1004 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1005         /* Check the decoder doesn't leak pictures */
1006         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1007              i_pic++ )
1008         {
1009             if( p_pic->i_status == READY_PICTURE )
1010             {
1011                 if( i_ready_pic++ > 0 ) break;
1012                 else continue;
1013             }
1014
1015             if( p_pic->i_status != DISPLAYED_PICTURE &&
1016                 p_pic->i_status != RESERVED_PICTURE &&
1017                 p_pic->i_status != READY_PICTURE ) break;
1018
1019             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1020                 break;
1021         }
1022         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1023         {
1024             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1025
1026             /* Just free all the pictures */
1027             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1028                  i_pic++ )
1029             {
1030                 if( p_pic->i_status == RESERVED_PICTURE )
1031                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1032                 if( p_pic->i_refcount > 0 )
1033                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1034             }
1035         }
1036 #undef p_pic
1037
1038         msleep( VOUT_OUTMEM_SLEEP );
1039     }
1040
1041     return p_pic;
1042 }
1043
1044 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1045 {
1046     VoutDisplayedPicture( p_dec->p_owner->p_vout, p_pic );
1047 }
1048
1049 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1050 {
1051     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1052 }
1053
1054 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1055 {
1056     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1057 }
1058
1059 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1060 {
1061     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1062     vout_thread_t *p_vout = NULL;
1063     subpicture_t *p_subpic;
1064     int i_attempts = 30;
1065
1066     while( i_attempts-- )
1067     {
1068         if( p_dec->b_die || p_dec->b_error ) break;
1069
1070         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1071         if( p_vout ) break;
1072
1073         msleep( VOUT_DISPLAY_DELAY );
1074     }
1075
1076     if( !p_vout )
1077     {
1078         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1079         return NULL;
1080     }
1081
1082     if( p_sys->p_spu_vout != p_vout )
1083     {
1084         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1085                      &p_sys->i_spu_channel );
1086         p_sys->p_spu_vout = p_vout;
1087     }
1088
1089     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1090     if( p_subpic )
1091     {
1092         p_subpic->i_channel = p_sys->i_spu_channel;
1093     }
1094
1095     vlc_object_release( p_vout );
1096
1097     return p_subpic;
1098 }
1099
1100 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1101 {
1102     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1103     vout_thread_t *p_vout = NULL;
1104
1105     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1106     if( !p_vout || p_sys->p_spu_vout != p_vout )
1107     {
1108         if( p_vout )
1109             vlc_object_release( p_vout );
1110         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1111         return;
1112     }
1113
1114     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1115
1116     vlc_object_release( p_vout );
1117 }
1118