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 \"%s\"",
 175                              p_dec->p_module->psz_object_name );
 176             module_Unneed( p_dec, p_dec->p_module );
 177             DeleteDecoder( p_dec );
 178             vlc_object_destroy( p_dec );
 179             return NULL;
 180         }
 181     }
 182
 183     return p_dec;
 184 }
 185
 186 /**
 187  * Kills a decoder thread and waits until it's finished
 188  *
 189  * \param p_input the input thread
 190  * \param p_es the es descriptor
 191  * \return nothing
 192  */
 193 void input_DecoderDelete( decoder_t *p_dec )
 194 {
 195     p_dec->b_die = VLC_TRUE;
 196
 197     if( p_dec->p_owner->b_own_thread )
 198     {
 199         /* Make sure the thread leaves the function by
 200          * sending it an empty block. */
 201         block_t *p_block = block_New( p_dec, 0 );
 202         input_DecoderDecode( p_dec, p_block );
 203
 204         vlc_thread_join( p_dec );
 205
 206         /* Don't module_Unneed() here because of the dll loader that wants
 207          * close() in the same thread than open()/decode() */
 208     }
 209     else
 210     {
 211         /* Flush */
 212         input_DecoderDecode( p_dec, NULL );
 213
 214         module_Unneed( p_dec, p_dec->p_module );
 215     }
 216
 217     /* Delete decoder configuration */
 218     DeleteDecoder( p_dec );
 219
 220     /* Delete the decoder */
 221     vlc_object_destroy( p_dec );
 222 }
 223
 224 /**
 225  * Put a block_t in the decoder's fifo.
 226  *
 227  * \param p_dec the decoder object
 228  * \param p_block the data block
 229  */
 230 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
 231 {
 232     if( p_dec->p_owner->b_own_thread )
 233     {
 234         if( p_dec->p_owner->p_input->p->b_out_pace_control )
 235         {
 236             /* FIXME !!!!! */
 237             while( !p_dec->b_die && !p_dec->b_error &&
 238                    p_dec->p_owner->p_fifo->i_depth > 10 )
 239             {
 240                 msleep( 1000 );
 241             }
 242         }
 243         else if( p_dec->p_owner->p_fifo->i_size > 50000000 /* 50 MB */ )
 244         {
 245             /* FIXME: ideally we would check the time amount of data
 246              * in the fifo instead of its size. */
 247             msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
 248                       "consumed quickly enough), resetting fifo!" );
 249             block_FifoEmpty( p_dec->p_owner->p_fifo );
 250         }
 251
 252         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 253     }
 254     else
 255     {
 256         if( p_dec->b_error || (p_block && p_block->i_buffer <= 0) )
 257         {
 258             if( p_block ) block_Release( p_block );
 259         }
 260         else
 261         {
 262             DecoderDecode( p_dec, p_block );
 263         }
 264     }
 265 }
 266
 267 void input_DecoderDiscontinuity( decoder_t * p_dec )
 268 {
 269     block_t *p_null;
 270
 271     /* Empty the fifo */
 272     if( p_dec->p_owner->b_own_thread )
 273     {
 274         block_FifoEmpty( p_dec->p_owner->p_fifo );
 275     }
 276
 277     /* Send a special block */
 278     p_null = block_New( p_dec, 128 );
 279     p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 280     memset( p_null->p_buffer, 0, p_null->i_buffer );
 281
 282     input_DecoderDecode( p_dec, p_null );
 283 }
 284
 285 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
 286 {
 287     if( p_dec->p_owner->b_own_thread && p_dec->p_owner->p_fifo->i_depth > 0 )
 288     {
 289         return VLC_FALSE;
 290     }
 291     return VLC_TRUE;
 292 }
 293
 294 void input_DecoderPreroll( decoder_t *p_dec, int64_t i_preroll_end )
 295 {
 296     p_dec->p_owner->i_preroll_end = i_preroll_end;
 297 }
 298 /**
 299  * Create a decoder object
 300  *
 301  * \param p_input the input thread
 302  * \param p_es the es descriptor
 303  * \param i_object_type Object type as define in include/vlc_objects.h
 304  * \return the decoder object
 305  */
 306 static decoder_t * CreateDecoder( input_thread_t *p_input,
 307                                   es_format_t *fmt, int i_object_type )
 308 {
 309     decoder_t *p_dec;
 310
 311     p_dec = vlc_object_create( p_input, i_object_type );
 312     if( p_dec == NULL )
 313     {
 314         msg_Err( p_input, "out of memory" );
 315         return NULL;
 316     }
 317
 318     p_dec->pf_decode_audio = 0;
 319     p_dec->pf_decode_video = 0;
 320     p_dec->pf_decode_sub = 0;
 321     p_dec->pf_packetize = 0;
 322
 323    /* Initialize the decoder fifo */
 324     p_dec->p_module = NULL;
 325
 326     memset( &null_es_format, 0, sizeof(es_format_t) );
 327     es_format_Copy( &p_dec->fmt_in, fmt );
 328     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 329
 330     /* Allocate our private structure for the decoder */
 331     p_dec->p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 332     if( p_dec->p_owner == NULL )
 333     {
 334         msg_Err( p_dec, "out of memory" );
 335         return NULL;
 336     }
 337     p_dec->p_owner->b_own_thread = VLC_TRUE;
 338     p_dec->p_owner->i_preroll_end = -1;
 339     p_dec->p_owner->p_input = p_input;
 340     p_dec->p_owner->p_aout = NULL;
 341     p_dec->p_owner->p_aout_input = NULL;
 342     p_dec->p_owner->p_vout = NULL;
 343     p_dec->p_owner->p_spu_vout = NULL;
 344     p_dec->p_owner->i_spu_channel = 0;
 345     p_dec->p_owner->p_sout = p_input->p->p_sout;
 346     p_dec->p_owner->p_sout_input = NULL;
 347     p_dec->p_owner->p_packetizer = NULL;
 348
 349     /* decoder fifo */
 350     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 351     {
 352         msg_Err( p_dec, "out of memory" );
 353         return NULL;
 354     }
 355
 356     /* Set buffers allocation callbacks for the decoders */
 357     p_dec->pf_aout_buffer_new = aout_new_buffer;
 358     p_dec->pf_aout_buffer_del = aout_del_buffer;
 359     p_dec->pf_vout_buffer_new = vout_new_buffer;
 360     p_dec->pf_vout_buffer_del = vout_del_buffer;
 361     p_dec->pf_picture_link    = vout_link_picture;
 362     p_dec->pf_picture_unlink  = vout_unlink_picture;
 363     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 364     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 365
 366     vlc_object_attach( p_dec, p_input );
 367
 368     /* Find a suitable decoder/packetizer module */
 369     if( i_object_type == VLC_OBJECT_DECODER )
 370         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 371     else
 372         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 373
 374     /* Check if decoder requires already packetized data */
 375     if( i_object_type == VLC_OBJECT_DECODER &&
 376         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 377     {
 378         p_dec->p_owner->p_packetizer =
 379             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 380         if( p_dec->p_owner->p_packetizer )
 381         {
 382             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 383                             &p_dec->fmt_in );
 384
 385             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 386                             &null_es_format );
 387
 388             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 389
 390             p_dec->p_owner->p_packetizer->p_module =
 391                 module_Need( p_dec->p_owner->p_packetizer,
 392                              "packetizer", "$packetizer", 0 );
 393
 394             if( !p_dec->p_owner->p_packetizer->p_module )
 395             {
 396                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 397                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 398                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 399             }
 400         }
 401     }
 402
 403     return p_dec;
 404 }
 405
 406 /**
 407  * The decoding main loop
 408  *
 409  * \param p_dec the decoder
 410  * \return 0
 411  */
 412 static int DecoderThread( decoder_t * p_dec )
 413 {
 414     block_t *p_block;
 415
 416     /* The decoder's main loop */
 417     while( !p_dec->b_die && !p_dec->b_error )
 418     {
 419         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 420         {
 421             p_dec->b_error = 1;
 422             break;
 423         }
 424         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 425         {
 426             break;
 427         }
 428     }
 429
 430     while( !p_dec->b_die )
 431     {
 432         /* Trash all received PES packets */
 433         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 434         if( p_block ) block_Release( p_block );
 435     }
 436
 437     /* We do it here because of the dll loader that wants close() in the
 438      * same thread than open()/decode() */
 439     module_Unneed( p_dec, p_dec->p_module );
 440
 441     return 0;
 442 }
 443
 444 /**
 445  * Decode a block
 446  *
 447  * \param p_dec the decoder object
 448  * \param p_block the block to decode
 449  * \return VLC_SUCCESS or an error code
 450  */
 451 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 452 {
 453     int i_rate = p_block ? p_block->i_rate : 1000;
 454
 455     if( p_block && p_block->i_buffer <= 0 )
 456     {
 457         block_Release( p_block );
 458         return VLC_SUCCESS;
 459     }
 460
 461     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 462     {
 463         block_t *p_sout_block;
 464
 465         while( ( p_sout_block =
 466                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 467         {
 468             if( !p_dec->p_owner->p_sout_input )
 469             {
 470                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 471
 472                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 473                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 474                 if( p_dec->fmt_in.psz_language )
 475                 {
 476                     if( p_dec->p_owner->sout.psz_language )
 477                         free( p_dec->p_owner->sout.psz_language );
 478                     p_dec->p_owner->sout.psz_language =
 479                         strdup( p_dec->fmt_in.psz_language );
 480                 }
 481
 482                 p_dec->p_owner->p_sout_input =
 483                     sout_InputNew( p_dec->p_owner->p_sout,
 484                                    &p_dec->p_owner->sout );
 485
 486                 if( p_dec->p_owner->p_sout_input == NULL )
 487                 {
 488                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 489                              (char *)&p_dec->p_owner->sout.i_codec );
 490                     p_dec->b_error = VLC_TRUE;
 491
 492                     while( p_sout_block )
 493                     {
 494                         block_t *p_next = p_sout_block->p_next;
 495                         block_Release( p_sout_block );
 496                         p_sout_block = p_next;
 497                     }
 498                     break;
 499                 }
 500             }
 501
 502             while( p_sout_block )
 503             {
 504                 block_t *p_next = p_sout_block->p_next;
 505
 506                 p_sout_block->p_next = NULL;
 507                 p_sout_block->i_rate = i_rate;
 508
 509                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 510                                       p_sout_block );
 511
 512                 p_sout_block = p_next;
 513             }
 514
 515             /* For now it's enough, as only sout inpact on this flag */
 516             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 517                 p_dec->p_owner->p_input->p->b_out_pace_control )
 518             {
 519                 msg_Dbg( p_dec, "switching to sync mode" );
 520                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 521             }
 522             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 523                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 524             {
 525                 msg_Dbg( p_dec, "switching to async mode" );
 526                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 527             }
 528         }
 529     }
 530     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 531     {
 532         aout_buffer_t *p_aout_buf;
 533
 534         if( p_dec->p_owner->p_packetizer )
 535         {
 536             block_t *p_packetized_block;
 537             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 538
 539             while( (p_packetized_block =
 540                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 541             {
 542                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 543                 {
 544                     es_format_Clean( &p_dec->fmt_in );
 545                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 546                 }
 547
 548                 while( p_packetized_block )
 549                 {
 550                     block_t *p_next = p_packetized_block->p_next;
 551                     p_packetized_block->p_next = NULL;
 552                     p_packetized_block->i_rate = i_rate;
 553
 554                     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec,
 555                                                        &p_packetized_block )) )
 556                     {
 557                         input_thread_t *p_i =(input_thread_t*)(p_dec->p_parent);
 558                         vlc_mutex_lock( &p_i->p->counters.counters_lock );
 559                         stats_UpdateInteger( p_dec,
 560                                p_i->p->counters.p_decoded_audio, 1, NULL );
 561                         vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 562
 563                         /* FIXME the best would be to handle the case
 564                          * start_date < preroll < end_date
 565                          * but that's not easy with non raw audio stream */
 566                         if( p_dec->p_owner->i_preroll_end > 0 &&
 567                             p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 568                         {
 569                             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 570                                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 571                         }
 572                         else
 573                         {
 574                             p_dec->p_owner->i_preroll_end = -1;
 575                             aout_DecPlay( p_dec->p_owner->p_aout,
 576                                           p_dec->p_owner->p_aout_input,
 577                                           p_aout_buf );
 578                         }
 579                     }
 580
 581                     p_packetized_block = p_next;
 582                 }
 583             }
 584         }
 585         else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 586         {
 587             input_thread_t *p_i = (input_thread_t*)(p_dec->p_parent);
 588             vlc_mutex_lock( &p_i->p->counters.counters_lock );
 589             stats_UpdateInteger( p_dec,
 590                                p_i->p->counters.p_decoded_audio, 1, NULL );
 591             vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 592
 593             if( p_dec->p_owner->i_preroll_end > 0 &&
 594                 p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 595             {
 596                 aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 597                                       p_dec->p_owner->p_aout_input, p_aout_buf );
 598             }
 599             else
 600             {
 601                 p_dec->p_owner->i_preroll_end = -1;
 602                 aout_DecPlay( p_dec->p_owner->p_aout,
 603                               p_dec->p_owner->p_aout_input,
 604                               p_aout_buf );
 605             }
 606         }
 607     }
 608     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 609     {
 610         picture_t *p_pic;
 611
 612         if( p_dec->p_owner->p_packetizer )
 613         {
 614             block_t *p_packetized_block;
 615             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 616
 617             while( (p_packetized_block =
 618                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 619             {
 620                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 621                 {
 622                     es_format_Clean( &p_dec->fmt_in );
 623                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 624                 }
 625
 626                 while( p_packetized_block )
 627                 {
 628                     block_t *p_next = p_packetized_block->p_next;
 629                     p_packetized_block->p_next = NULL;
 630                     p_packetized_block->i_rate = i_rate;
 631
 632                     while( (p_pic = p_dec->pf_decode_video( p_dec,
 633                                                        &p_packetized_block )) )
 634                     {
 635                         input_thread_t *p_i =(input_thread_t*)(p_dec->p_parent);
 636                         vlc_mutex_lock( &p_i->p->counters.counters_lock );
 637                         stats_UpdateInteger( p_dec,
 638                                p_i->p->counters.p_decoded_video, 1, NULL );
 639                         vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 640
 641                         if( p_dec->p_owner->i_preroll_end > 0 &&
 642                             p_pic->date < p_dec->p_owner->i_preroll_end )
 643                         {
 644                             vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 645                         }
 646                         else
 647                         {
 648                             p_dec->p_owner->i_preroll_end = -1;
 649                             vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 650                                               p_pic->date );
 651                             vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 652                         }
 653                     }
 654
 655                     p_packetized_block = p_next;
 656                 }
 657             }
 658         }
 659         else while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 660         {
 661             input_thread_t *p_i = (input_thread_t*)(p_dec->p_parent);
 662             vlc_mutex_lock( &p_i->p->counters.counters_lock );
 663             stats_UpdateInteger( p_dec,
 664                                p_i->p->counters.p_decoded_video, 1, NULL );
 665             vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 666
 667             if( p_dec->p_owner->i_preroll_end > 0 &&
 668                 p_pic->date < p_dec->p_owner->i_preroll_end )
 669             {
 670                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 671             }
 672             else
 673             {
 674                 p_dec->p_owner->i_preroll_end = -1;
 675                 vout_DatePicture( p_dec->p_owner->p_vout, p_pic, p_pic->date );
 676                 vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 677             }
 678         }
 679     }
 680     else if( p_dec->fmt_in.i_cat == SPU_ES )
 681     {
 682         vout_thread_t *p_vout;
 683         subpicture_t *p_spu;
 684         while( (p_spu = p_dec->pf_decode_sub( p_dec, &p_block ) ) )
 685         {
 686             input_thread_t *p_i = (input_thread_t*)(p_dec->p_parent);
 687             vlc_mutex_lock( &p_i->p->counters.counters_lock );
 688             stats_UpdateInteger( p_dec,
 689                                p_i->p->counters.p_decoded_sub, 1, NULL );
 690             vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 691
 692             if( p_dec->p_owner->i_preroll_end > 0 &&
 693                 p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 694                 ( p_spu->i_stop <= 0 || p_spu->i_stop <= p_dec->p_owner->i_preroll_end ) )
 695             {
 696                 spu_DestroySubpicture( p_dec->p_owner->p_vout->p_spu, p_spu );
 697                 continue;
 698             }
 699
 700             p_dec->p_owner->i_preroll_end = -1;
 701             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 702             if( p_vout )
 703             {
 704                 spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 705                 vlc_object_release( p_vout );
 706             }
 707         }
 708     }
 709     else
 710     {
 711         msg_Err( p_dec, "unknown ES format" );
 712         p_dec->b_error = 1;
 713     }
 714
 715     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 716 }
 717
 718 /**
 719  * Destroys a decoder object
 720  *
 721  * \param p_dec the decoder object
 722  * \return nothing
 723  */
 724 static void DeleteDecoder( decoder_t * p_dec )
 725 {
 726     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 727              (char*)&p_dec->fmt_in.i_codec,
 728              p_dec->p_owner->p_fifo->i_depth );
 729
 730     /* Free all packets still in the decoder fifo. */
 731     block_FifoEmpty( p_dec->p_owner->p_fifo );
 732     block_FifoRelease( p_dec->p_owner->p_fifo );
 733
 734     /* Cleanup */
 735     if( p_dec->p_owner->p_aout_input )
 736         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 737
 738     if( p_dec->p_owner->p_vout )
 739     {
 740         int i_pic;
 741
 742 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 743         /* Hack to make sure all the the pictures are freed by the decoder */
 744         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 745              i_pic++ )
 746         {
 747             if( p_pic->i_status == RESERVED_PICTURE )
 748                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 749             if( p_pic->i_refcount > 0 )
 750                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 751         }
 752 #undef p_pic
 753
 754         /* We are about to die. Reattach video output to p_vlc. */
 755         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
 756     }
 757
 758     if( p_dec->p_owner->p_sout_input )
 759     {
 760         sout_InputDelete( p_dec->p_owner->p_sout_input );
 761         es_format_Clean( &p_dec->p_owner->sout );
 762     }
 763
 764     if( p_dec->fmt_in.i_cat == SPU_ES )
 765     {
 766         vout_thread_t *p_vout;
 767
 768         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 769         if( p_vout )
 770         {
 771             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
 772                          p_dec->p_owner->i_spu_channel );
 773             vlc_object_release( p_vout );
 774         }
 775     }
 776
 777     es_format_Clean( &p_dec->fmt_in );
 778     es_format_Clean( &p_dec->fmt_out );
 779
 780     if( p_dec->p_owner->p_packetizer )
 781     {
 782         module_Unneed( p_dec->p_owner->p_packetizer,
 783                        p_dec->p_owner->p_packetizer->p_module );
 784         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 785         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 786         vlc_object_detach( p_dec->p_owner->p_packetizer );
 787         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 788     }
 789
 790     vlc_object_detach( p_dec );
 791
 792     free( p_dec->p_owner );
 793 }
 794
 795 /*****************************************************************************
 796  * Buffers allocation callbacks for the decoders
 797  *****************************************************************************/
 798 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 799 {
 800     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 801     aout_buffer_t *p_buffer;
 802
 803     if( p_sys->p_aout_input != NULL &&
 804         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 805           p_dec->fmt_out.audio.i_original_channels !=
 806               p_sys->audio.i_original_channels ||
 807           p_dec->fmt_out.audio.i_bytes_per_frame !=
 808               p_sys->audio.i_bytes_per_frame ) )
 809     {
 810         /* Parameters changed, restart the aout */
 811         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 812         p_sys->p_aout_input = NULL;
 813     }
 814
 815     if( p_sys->p_aout_input == NULL )
 816     {
 817         audio_sample_format_t format;
 818         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
 819
 820         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 821         p_sys->audio = p_dec->fmt_out.audio;
 822
 823         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
 824         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
 825                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
 826         {
 827             if ( i_force_dolby == 1 )
 828             {
 829                 format.i_original_channels = format.i_original_channels |
 830                                              AOUT_CHAN_DOLBYSTEREO;
 831             }
 832             else /* i_force_dolby == 2 */
 833             {
 834                 format.i_original_channels = format.i_original_channels &
 835                                              ~AOUT_CHAN_DOLBYSTEREO;
 836             }
 837         }
 838
 839         p_sys->p_aout_input =
 840             aout_DecNew( p_dec, &p_sys->p_aout, &format );
 841         if( p_sys->p_aout_input == NULL )
 842         {
 843             msg_Err( p_dec, "failed to create audio output" );
 844             p_dec->b_error = VLC_TRUE;
 845             return NULL;
 846         }
 847         p_dec->fmt_out.audio.i_bytes_per_frame =
 848             p_sys->audio.i_bytes_per_frame;
 849     }
 850
 851     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 852                                   i_samples );
 853
 854     return p_buffer;
 855 }
 856
 857 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 858 {
 859     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 860                           p_dec->p_owner->p_aout_input, p_buffer );
 861 }
 862
 863 static picture_t *vout_new_buffer( decoder_t *p_dec )
 864 {
 865     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 866     picture_t *p_pic;
 867
 868     if( p_sys->p_vout == NULL ||
 869         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 870         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 871         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 872         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 873     {
 874         if( !p_dec->fmt_out.video.i_width ||
 875             !p_dec->fmt_out.video.i_height )
 876         {
 877             /* Can't create a new vout without display size */
 878             return NULL;
 879         }
 880
 881         if( !p_dec->fmt_out.video.i_visible_width ||
 882             !p_dec->fmt_out.video.i_visible_height )
 883         {
 884             if( p_dec->fmt_in.video.i_visible_width &&
 885                 p_dec->fmt_in.video.i_visible_height )
 886             {
 887                 p_dec->fmt_out.video.i_visible_width =
 888                     p_dec->fmt_in.video.i_visible_width;
 889                 p_dec->fmt_out.video.i_visible_height =
 890                     p_dec->fmt_in.video.i_visible_height;
 891             }
 892             else
 893             {
 894                 p_dec->fmt_out.video.i_visible_width =
 895                     p_dec->fmt_out.video.i_width;
 896                 p_dec->fmt_out.video.i_visible_height =
 897                     p_dec->fmt_out.video.i_height;
 898             }
 899         }
 900
 901         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
 902             var_CreateGetBool( p_dec, "hdtv-fix" ) )
 903         {
 904             p_dec->fmt_out.video.i_visible_height = 1080;
 905             p_dec->fmt_out.video.i_sar_num *= 135;
 906             p_dec->fmt_out.video.i_sar_den *= 136;
 907             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
 908         }
 909
 910         if( !p_dec->fmt_out.video.i_sar_num ||
 911             !p_dec->fmt_out.video.i_sar_den )
 912         {
 913             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
 914               p_dec->fmt_out.video.i_visible_height;
 915
 916             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
 917               p_dec->fmt_out.video.i_visible_width;
 918         }
 919
 920         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
 921                      &p_dec->fmt_out.video.i_sar_den,
 922                      p_dec->fmt_out.video.i_sar_num,
 923                      p_dec->fmt_out.video.i_sar_den, 50000 );
 924
 925         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 926         p_sys->video = p_dec->fmt_out.video;
 927
 928         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 929                                       &p_dec->fmt_out.video );
 930         if( p_sys->p_vout == NULL )
 931         {
 932             msg_Err( p_dec, "failed to create video output" );
 933             p_dec->b_error = VLC_TRUE;
 934             return NULL;
 935         }
 936
 937         if( p_sys->video.i_rmask )
 938             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
 939         if( p_sys->video.i_gmask )
 940             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
 941         if( p_sys->video.i_bmask )
 942             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
 943     }
 944
 945     /* Get a new picture */
 946     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 947     {
 948         int i_pic, i_ready_pic = 0;
 949
 950         if( p_dec->b_die || p_dec->b_error )
 951         {
 952             return NULL;
 953         }
 954
 955 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 956         /* Check the decoder doesn't leak pictures */
 957         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 958              i_pic++ )
 959         {
 960             if( p_pic->i_status == READY_PICTURE )
 961             {
 962                 if( i_ready_pic++ > 0 ) break;
 963                 else continue;
 964             }
 965
 966             if( p_pic->i_status != DISPLAYED_PICTURE &&
 967                 p_pic->i_status != RESERVED_PICTURE &&
 968                 p_pic->i_status != READY_PICTURE ) break;
 969
 970             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
 971                 break;
 972         }
 973         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
 974         {
 975             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
 976
 977             /* Just free all the pictures */
 978             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 979                  i_pic++ )
 980             {
 981                 if( p_pic->i_status == RESERVED_PICTURE )
 982                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 983                 if( p_pic->i_refcount > 0 )
 984                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 985             }
 986         }
 987 #undef p_pic
 988
 989         msleep( VOUT_OUTMEM_SLEEP );
 990     }
 991
 992     return p_pic;
 993 }
 994
 995 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
 996 {
 997     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 998 }
 999
1000 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1001 {
1002     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1003 }
1004
1005 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1006 {
1007     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1008 }
1009
1010 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1011 {
1012     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1013     vout_thread_t *p_vout = NULL;
1014     subpicture_t *p_subpic;
1015     int i_attempts = 30;
1016
1017     while( i_attempts-- )
1018     {
1019         if( p_dec->b_die || p_dec->b_error ) break;
1020
1021         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1022         if( p_vout ) break;
1023
1024         msleep( VOUT_DISPLAY_DELAY );
1025     }
1026
1027     if( !p_vout )
1028     {
1029         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1030         return NULL;
1031     }
1032
1033     if( p_sys->p_spu_vout != p_vout )
1034     {
1035         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1036                      &p_sys->i_spu_channel );
1037         p_sys->p_spu_vout = p_vout;
1038     }
1039
1040     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1041     if( p_subpic )
1042     {
1043         p_subpic->i_channel = p_sys->i_spu_channel;
1044     }
1045
1046     vlc_object_release( p_vout );
1047
1048     return p_subpic;
1049 }
1050
1051 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1052 {
1053     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1054     vout_thread_t *p_vout = NULL;
1055
1056     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1057     if( !p_vout || p_sys->p_spu_vout != p_vout )
1058     {
1059         if( p_vout )
1060             vlc_object_release( p_vout );
1061         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1062         return;
1063     }
1064
1065     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1066
1067     vlc_object_release( p_vout );
1068 }
1069