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