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 #if 0
 300 /**
 301  * Create a NULL packet for padding in case of a data loss
 302  *
 303  * \param p_input the input thread
 304  * \param p_es es descriptor
 305  * \return nothing
 306  */
 307 static void input_NullPacket( input_thread_t * p_input,
 308                               es_descriptor_t * p_es )
 309 {
 310 #if 0
 311     block_t *p_block = block_New( p_input, PADDING_PACKET_SIZE );
 312     if( p_block )
 313     {
 314         memset( p_block->p_buffer, 0, PADDING_PACKET_SIZE );
 315         p_block->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 316
 317         block_FifoPut( p_es->p_dec->p_owner->p_fifo, p_block );
 318     }
 319 #endif
 320 }
 321
 322 /**
 323  * Send a NULL packet to the decoders
 324  *
 325  * \param p_input the input thread
 326  * \return nothing
 327  */
 328 void input_EscapeDiscontinuity( input_thread_t * p_input )
 329 {
 330 #if 0
 331     unsigned int i_es, i;
 332
 333     for( i_es = 0; i_es < p_input->p->stream.i_selected_es_number; i_es++ )
 334     {
 335         es_descriptor_t * p_es = p_input->p->stream.pp_selected_es[i_es];
 336
 337         if( p_es->p_dec != NULL )
 338         {
 339             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 340             {
 341                 input_NullPacket( p_input, p_es );
 342             }
 343         }
 344     }
 345 #endif
 346 }
 347
 348 /**
 349  * Send a NULL packet to the audio decoders
 350  *
 351  * \param p_input the input thread
 352  * \return nothing
 353  */
 354 void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
 355 {
 356 #if 0
 357     unsigned int i_es, i;
 358
 359     for( i_es = 0; i_es < p_input->p->stream.i_selected_es_number; i_es++ )
 360     {
 361         es_descriptor_t * p_es = p_input->p->stream.pp_selected_es[i_es];
 362
 363         if( p_es->p_dec != NULL && p_es->i_cat == AUDIO_ES )
 364         {
 365             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 366             {
 367                 input_NullPacket( p_input, p_es );
 368             }
 369         }
 370     }
 371 #endif
 372 }
 373 #endif
 374
 375 /**
 376  * Create a decoder object
 377  *
 378  * \param p_input the input thread
 379  * \param p_es the es descriptor
 380  * \param i_object_type Object type as define in include/vlc_objects.h
 381  * \return the decoder object
 382  */
 383 static decoder_t * CreateDecoder( input_thread_t *p_input,
 384                                   es_format_t *fmt, int i_object_type )
 385 {
 386     decoder_t *p_dec;
 387
 388     p_dec = vlc_object_create( p_input, i_object_type );
 389     if( p_dec == NULL )
 390     {
 391         msg_Err( p_input, "out of memory" );
 392         return NULL;
 393     }
 394
 395     p_dec->pf_decode_audio = 0;
 396     p_dec->pf_decode_video = 0;
 397     p_dec->pf_decode_sub = 0;
 398     p_dec->pf_packetize = 0;
 399
 400    /* Initialize the decoder fifo */
 401     p_dec->p_module = NULL;
 402
 403     memset( &null_es_format, 0, sizeof(es_format_t) );
 404     es_format_Copy( &p_dec->fmt_in, fmt );
 405     es_format_Copy( &p_dec->fmt_out, &null_es_format );
 406
 407     /* Allocate our private structure for the decoder */
 408     p_dec->p_owner = malloc( sizeof( decoder_owner_sys_t ) );
 409     if( p_dec->p_owner == NULL )
 410     {
 411         msg_Err( p_dec, "out of memory" );
 412         return NULL;
 413     }
 414     p_dec->p_owner->b_own_thread = VLC_TRUE;
 415     p_dec->p_owner->i_preroll_end = -1;
 416     p_dec->p_owner->p_input = p_input;
 417     p_dec->p_owner->p_aout = NULL;
 418     p_dec->p_owner->p_aout_input = NULL;
 419     p_dec->p_owner->p_vout = NULL;
 420     p_dec->p_owner->p_spu_vout = NULL;
 421     p_dec->p_owner->i_spu_channel = 0;
 422     p_dec->p_owner->p_sout = p_input->p->p_sout;
 423     p_dec->p_owner->p_sout_input = NULL;
 424     p_dec->p_owner->p_packetizer = NULL;
 425
 426     /* decoder fifo */
 427     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 428     {
 429         msg_Err( p_dec, "out of memory" );
 430         return NULL;
 431     }
 432
 433     /* Set buffers allocation callbacks for the decoders */
 434     p_dec->pf_aout_buffer_new = aout_new_buffer;
 435     p_dec->pf_aout_buffer_del = aout_del_buffer;
 436     p_dec->pf_vout_buffer_new = vout_new_buffer;
 437     p_dec->pf_vout_buffer_del = vout_del_buffer;
 438     p_dec->pf_picture_link    = vout_link_picture;
 439     p_dec->pf_picture_unlink  = vout_unlink_picture;
 440     p_dec->pf_spu_buffer_new  = spu_new_buffer;
 441     p_dec->pf_spu_buffer_del  = spu_del_buffer;
 442
 443     vlc_object_attach( p_dec, p_input );
 444
 445     /* Find a suitable decoder/packetizer module */
 446     if( i_object_type == VLC_OBJECT_DECODER )
 447         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 448     else
 449         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 450
 451     /* Check if decoder requires already packetized data */
 452     if( i_object_type == VLC_OBJECT_DECODER &&
 453         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 454     {
 455         p_dec->p_owner->p_packetizer =
 456             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 457         if( p_dec->p_owner->p_packetizer )
 458         {
 459             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 460                             &p_dec->fmt_in );
 461
 462             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
 463                             &null_es_format );
 464
 465             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 466
 467             p_dec->p_owner->p_packetizer->p_module =
 468                 module_Need( p_dec->p_owner->p_packetizer,
 469                              "packetizer", "$packetizer", 0 );
 470
 471             if( !p_dec->p_owner->p_packetizer->p_module )
 472             {
 473                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 474                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 475                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 476             }
 477         }
 478     }
 479
 480     return p_dec;
 481 }
 482
 483 /**
 484  * The decoding main loop
 485  *
 486  * \param p_dec the decoder
 487  * \return 0
 488  */
 489 static int DecoderThread( decoder_t * p_dec )
 490 {
 491     block_t *p_block;
 492
 493     /* The decoder's main loop */
 494     while( !p_dec->b_die && !p_dec->b_error )
 495     {
 496         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 497         {
 498             p_dec->b_error = 1;
 499             break;
 500         }
 501         if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
 502         {
 503             break;
 504         }
 505     }
 506
 507     while( !p_dec->b_die )
 508     {
 509         /* Trash all received PES packets */
 510         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 511         if( p_block ) block_Release( p_block );
 512     }
 513
 514     /* We do it here because of the dll loader that wants close() in the
 515      * same thread than open()/decode() */
 516     module_Unneed( p_dec, p_dec->p_module );
 517
 518     return 0;
 519 }
 520
 521 /**
 522  * Decode a block
 523  *
 524  * \param p_dec the decoder object
 525  * \param p_block the block to decode
 526  * \return VLC_SUCCESS or an error code
 527  */
 528 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 529 {
 530     int i_rate = p_block ? p_block->i_rate : 1000;
 531
 532     if( p_block && p_block->i_buffer <= 0 )
 533     {
 534         block_Release( p_block );
 535         return VLC_SUCCESS;
 536     }
 537
 538     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 539     {
 540         block_t *p_sout_block;
 541
 542         while( ( p_sout_block =
 543                      p_dec->pf_packetize( p_dec, p_block ? &p_block : 0 ) ) )
 544         {
 545             if( !p_dec->p_owner->p_sout_input )
 546             {
 547                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 548
 549                 p_dec->p_owner->sout.i_group = p_dec->fmt_in.i_group;
 550                 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
 551                 if( p_dec->fmt_in.psz_language )
 552                 {
 553                     if( p_dec->p_owner->sout.psz_language )
 554                         free( p_dec->p_owner->sout.psz_language );
 555                     p_dec->p_owner->sout.psz_language =
 556                         strdup( p_dec->fmt_in.psz_language );
 557                 }
 558
 559                 p_dec->p_owner->p_sout_input =
 560                     sout_InputNew( p_dec->p_owner->p_sout,
 561                                    &p_dec->p_owner->sout );
 562
 563                 if( p_dec->p_owner->p_sout_input == NULL )
 564                 {
 565                     msg_Err( p_dec, "cannot create packetizer output (%4.4s)",
 566                              (char *)&p_dec->p_owner->sout.i_codec );
 567                     p_dec->b_error = VLC_TRUE;
 568
 569                     while( p_sout_block )
 570                     {
 571                         block_t *p_next = p_sout_block->p_next;
 572                         block_Release( p_sout_block );
 573                         p_sout_block = p_next;
 574                     }
 575                     break;
 576                 }
 577             }
 578
 579             while( p_sout_block )
 580             {
 581                 block_t *p_next = p_sout_block->p_next;
 582
 583                 p_sout_block->p_next = NULL;
 584                 p_sout_block->i_rate = i_rate;
 585
 586                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 587                                       p_sout_block );
 588
 589                 p_sout_block = p_next;
 590             }
 591
 592             /* For now it's enough, as only sout inpact on this flag */
 593             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 594                 p_dec->p_owner->p_input->p->b_out_pace_control )
 595             {
 596                 msg_Dbg( p_dec, "switching to sync mode" );
 597                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_FALSE;
 598             }
 599             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 600                      !p_dec->p_owner->p_input->p->b_out_pace_control )
 601             {
 602                 msg_Dbg( p_dec, "switching to async mode" );
 603                 p_dec->p_owner->p_input->p->b_out_pace_control = VLC_TRUE;
 604             }
 605         }
 606     }
 607     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 608     {
 609         aout_buffer_t *p_aout_buf;
 610
 611         if( p_dec->p_owner->p_packetizer )
 612         {
 613             block_t *p_packetized_block;
 614             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 615
 616             while( (p_packetized_block =
 617                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 618             {
 619                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 620                 {
 621                     es_format_Clean( &p_dec->fmt_in );
 622                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 623                 }
 624
 625                 while( p_packetized_block )
 626                 {
 627                     block_t *p_next = p_packetized_block->p_next;
 628                     p_packetized_block->p_next = NULL;
 629                     p_packetized_block->i_rate = i_rate;
 630
 631                     while( (p_aout_buf = p_dec->pf_decode_audio( p_dec,
 632                                                        &p_packetized_block )) )
 633                     {
 634                         input_thread_t *p_i =(input_thread_t*)(p_dec->p_parent);
 635                         vlc_mutex_lock( &p_i->p->counters.counters_lock );
 636                         stats_UpdateInteger( p_dec,
 637                                p_i->p->counters.p_decoded_audio, 1, NULL );
 638                         vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 639
 640                         /* FIXME the best would be to handle the case
 641                          * start_date < preroll < end_date
 642                          * but that's not easy with non raw audio stream */
 643                         if( p_dec->p_owner->i_preroll_end > 0 &&
 644                             p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 645                         {
 646                             aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 647                                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 648                         }
 649                         else
 650                         {
 651                             p_dec->p_owner->i_preroll_end = -1;
 652                             aout_DecPlay( p_dec->p_owner->p_aout,
 653                                           p_dec->p_owner->p_aout_input,
 654                                           p_aout_buf );
 655                         }
 656                     }
 657
 658                     p_packetized_block = p_next;
 659                 }
 660             }
 661         }
 662         else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 663         {
 664             input_thread_t *p_i = (input_thread_t*)(p_dec->p_parent);
 665             vlc_mutex_lock( &p_i->p->counters.counters_lock );
 666             stats_UpdateInteger( p_dec,
 667                                p_i->p->counters.p_decoded_audio, 1, NULL );
 668             vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 669
 670             if( p_dec->p_owner->i_preroll_end > 0 &&
 671                 p_aout_buf->start_date < p_dec->p_owner->i_preroll_end )
 672             {
 673                 aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 674                                       p_dec->p_owner->p_aout_input, p_aout_buf );
 675             }
 676             else
 677             {
 678                 p_dec->p_owner->i_preroll_end = -1;
 679                 aout_DecPlay( p_dec->p_owner->p_aout,
 680                               p_dec->p_owner->p_aout_input,
 681                               p_aout_buf );
 682             }
 683         }
 684     }
 685     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 686     {
 687         picture_t *p_pic;
 688
 689         if( p_dec->p_owner->p_packetizer )
 690         {
 691             block_t *p_packetized_block;
 692             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 693
 694             while( (p_packetized_block =
 695                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 696             {
 697                 if( p_packetizer->fmt_out.i_extra && !p_dec->fmt_in.i_extra )
 698                 {
 699                     es_format_Clean( &p_dec->fmt_in );
 700                     es_format_Copy( &p_dec->fmt_in, &p_packetizer->fmt_out );
 701                 }
 702
 703                 while( p_packetized_block )
 704                 {
 705                     block_t *p_next = p_packetized_block->p_next;
 706                     p_packetized_block->p_next = NULL;
 707                     p_packetized_block->i_rate = i_rate;
 708
 709                     while( (p_pic = p_dec->pf_decode_video( p_dec,
 710                                                        &p_packetized_block )) )
 711                     {
 712                         input_thread_t *p_i =(input_thread_t*)(p_dec->p_parent);
 713                         vlc_mutex_lock( &p_i->p->counters.counters_lock );
 714                         stats_UpdateInteger( p_dec,
 715                                p_i->p->counters.p_decoded_video, 1, NULL );
 716                         vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 717
 718                         if( p_dec->p_owner->i_preroll_end > 0 &&
 719                             p_pic->date < p_dec->p_owner->i_preroll_end )
 720                         {
 721                             vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 722                         }
 723                         else
 724                         {
 725                             p_dec->p_owner->i_preroll_end = -1;
 726                             vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 727                                               p_pic->date );
 728                             vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 729                         }
 730                     }
 731
 732                     p_packetized_block = p_next;
 733                 }
 734             }
 735         }
 736         else while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 737         {
 738             input_thread_t *p_i = (input_thread_t*)(p_dec->p_parent);
 739             vlc_mutex_lock( &p_i->p->counters.counters_lock );
 740             stats_UpdateInteger( p_dec,
 741                                p_i->p->counters.p_decoded_video, 1, NULL );
 742             vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 743
 744             if( p_dec->p_owner->i_preroll_end > 0 &&
 745                 p_pic->date < p_dec->p_owner->i_preroll_end )
 746             {
 747                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 748             }
 749             else
 750             {
 751                 p_dec->p_owner->i_preroll_end = -1;
 752                 vout_DatePicture( p_dec->p_owner->p_vout, p_pic, p_pic->date );
 753                 vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 754             }
 755         }
 756     }
 757     else if( p_dec->fmt_in.i_cat == SPU_ES )
 758     {
 759         vout_thread_t *p_vout;
 760         subpicture_t *p_spu;
 761         while( (p_spu = p_dec->pf_decode_sub( p_dec, &p_block ) ) )
 762         {
 763             input_thread_t *p_i = (input_thread_t*)(p_dec->p_parent);
 764             vlc_mutex_lock( &p_i->p->counters.counters_lock );
 765             stats_UpdateInteger( p_dec,
 766                                p_i->p->counters.p_decoded_sub, 1, NULL );
 767             vlc_mutex_unlock( &p_i->p->counters.counters_lock );
 768
 769             if( p_dec->p_owner->i_preroll_end > 0 &&
 770                 p_spu->i_start < p_dec->p_owner->i_preroll_end &&
 771                 ( p_spu->i_stop <= 0 || p_spu->i_stop <= p_dec->p_owner->i_preroll_end ) )
 772             {
 773                 spu_DestroySubpicture( p_dec->p_owner->p_vout->p_spu, p_spu );
 774                 continue;
 775             }
 776
 777             p_dec->p_owner->i_preroll_end = -1;
 778             p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 779             if( p_vout )
 780             {
 781                 spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 782                 vlc_object_release( p_vout );
 783             }
 784         }
 785     }
 786     else
 787     {
 788         msg_Err( p_dec, "unknown ES format" );
 789         p_dec->b_error = 1;
 790     }
 791
 792     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 793 }
 794
 795 /**
 796  * Destroys a decoder object
 797  *
 798  * \param p_dec the decoder object
 799  * \return nothing
 800  */
 801 static void DeleteDecoder( decoder_t * p_dec )
 802 {
 803     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 804              (char*)&p_dec->fmt_in.i_codec,
 805              p_dec->p_owner->p_fifo->i_depth );
 806
 807     /* Free all packets still in the decoder fifo. */
 808     block_FifoEmpty( p_dec->p_owner->p_fifo );
 809     block_FifoRelease( p_dec->p_owner->p_fifo );
 810
 811     /* Cleanup */
 812     if( p_dec->p_owner->p_aout_input )
 813         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 814
 815     if( p_dec->p_owner->p_vout )
 816     {
 817         int i_pic;
 818
 819 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 820         /* Hack to make sure all the the pictures are freed by the decoder */
 821         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 822              i_pic++ )
 823         {
 824             if( p_pic->i_status == RESERVED_PICTURE )
 825                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 826             if( p_pic->i_refcount > 0 )
 827                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 828         }
 829 #undef p_pic
 830
 831         /* We are about to die. Reattach video output to p_vlc. */
 832         vout_Request( p_dec, p_dec->p_owner->p_vout, 0 );
 833     }
 834
 835     if( p_dec->p_owner->p_sout_input )
 836     {
 837         sout_InputDelete( p_dec->p_owner->p_sout_input );
 838         es_format_Clean( &p_dec->p_owner->sout );
 839     }
 840
 841     if( p_dec->fmt_in.i_cat == SPU_ES )
 842     {
 843         vout_thread_t *p_vout;
 844
 845         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
 846         if( p_vout )
 847         {
 848             spu_Control( p_vout->p_spu, SPU_CHANNEL_CLEAR,
 849                          p_dec->p_owner->i_spu_channel );
 850             vlc_object_release( p_vout );
 851         }
 852     }
 853
 854     es_format_Clean( &p_dec->fmt_in );
 855     es_format_Clean( &p_dec->fmt_out );
 856
 857     if( p_dec->p_owner->p_packetizer )
 858     {
 859         module_Unneed( p_dec->p_owner->p_packetizer,
 860                        p_dec->p_owner->p_packetizer->p_module );
 861         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 862         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 863         vlc_object_detach( p_dec->p_owner->p_packetizer );
 864         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 865     }
 866
 867     vlc_object_detach( p_dec );
 868
 869     free( p_dec->p_owner );
 870 }
 871
 872 /*****************************************************************************
 873  * Buffers allocation callbacks for the decoders
 874  *****************************************************************************/
 875 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 876 {
 877     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 878     aout_buffer_t *p_buffer;
 879
 880     if( p_sys->p_aout_input != NULL &&
 881         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 882           p_dec->fmt_out.audio.i_original_channels !=
 883               p_sys->audio.i_original_channels ||
 884           p_dec->fmt_out.audio.i_bytes_per_frame !=
 885               p_sys->audio.i_bytes_per_frame ) )
 886     {
 887         /* Parameters changed, restart the aout */
 888         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 889         p_sys->p_aout_input = NULL;
 890     }
 891
 892     if( p_sys->p_aout_input == NULL )
 893     {
 894         audio_sample_format_t format;
 895         int i_force_dolby = config_GetInt( p_dec, "force-dolby-surround" );
 896
 897         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 898         p_sys->audio = p_dec->fmt_out.audio;
 899
 900         memcpy( &format, &p_sys->audio, sizeof( audio_sample_format_t ) );
 901         if ( i_force_dolby && (format.i_original_channels&AOUT_CHAN_PHYSMASK)
 902                                     == (AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT) )
 903         {
 904             if ( i_force_dolby == 1 )
 905             {
 906                 format.i_original_channels = format.i_original_channels |
 907                                              AOUT_CHAN_DOLBYSTEREO;
 908             }
 909             else /* i_force_dolby == 2 */
 910             {
 911                 format.i_original_channels = format.i_original_channels &
 912                                              ~AOUT_CHAN_DOLBYSTEREO;
 913             }
 914         }
 915
 916         p_sys->p_aout_input =
 917             aout_DecNew( p_dec, &p_sys->p_aout, &format );
 918         if( p_sys->p_aout_input == NULL )
 919         {
 920             msg_Err( p_dec, "failed to create audio output" );
 921             p_dec->b_error = VLC_TRUE;
 922             return NULL;
 923         }
 924         p_dec->fmt_out.audio.i_bytes_per_frame =
 925             p_sys->audio.i_bytes_per_frame;
 926     }
 927
 928     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 929                                   i_samples );
 930
 931     return p_buffer;
 932 }
 933
 934 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 935 {
 936     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 937                           p_dec->p_owner->p_aout_input, p_buffer );
 938 }
 939
 940 static picture_t *vout_new_buffer( decoder_t *p_dec )
 941 {
 942     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 943     picture_t *p_pic;
 944
 945     if( p_sys->p_vout == NULL ||
 946         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 947         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 948         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 949         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 950     {
 951         if( !p_dec->fmt_out.video.i_width ||
 952             !p_dec->fmt_out.video.i_height )
 953         {
 954             /* Can't create a new vout without display size */
 955             return NULL;
 956         }
 957
 958         if( !p_dec->fmt_out.video.i_visible_width ||
 959             !p_dec->fmt_out.video.i_visible_height )
 960         {
 961             if( p_dec->fmt_in.video.i_visible_width &&
 962                 p_dec->fmt_in.video.i_visible_height )
 963             {
 964                 p_dec->fmt_out.video.i_visible_width =
 965                     p_dec->fmt_in.video.i_visible_width;
 966                 p_dec->fmt_out.video.i_visible_height =
 967                     p_dec->fmt_in.video.i_visible_height;
 968             }
 969             else
 970             {
 971                 p_dec->fmt_out.video.i_visible_width =
 972                     p_dec->fmt_out.video.i_width;
 973                 p_dec->fmt_out.video.i_visible_height =
 974                     p_dec->fmt_out.video.i_height;
 975             }
 976         }
 977
 978         if( p_dec->fmt_out.video.i_visible_height == 1088 &&
 979             var_CreateGetBool( p_dec, "hdtv-fix" ) )
 980         {
 981             p_dec->fmt_out.video.i_visible_height = 1080;
 982             p_dec->fmt_out.video.i_sar_num *= 135;
 983             p_dec->fmt_out.video.i_sar_den *= 136;
 984             msg_Warn( p_dec, "Fixing broken HDTV stream (display_height=1088)");
 985         }
 986
 987         if( !p_dec->fmt_out.video.i_sar_num ||
 988             !p_dec->fmt_out.video.i_sar_den )
 989         {
 990             p_dec->fmt_out.video.i_sar_num = p_dec->fmt_out.video.i_aspect *
 991               p_dec->fmt_out.video.i_visible_height;
 992
 993             p_dec->fmt_out.video.i_sar_den = VOUT_ASPECT_FACTOR *
 994               p_dec->fmt_out.video.i_visible_width;
 995         }
 996
 997         vlc_ureduce( &p_dec->fmt_out.video.i_sar_num,
 998                      &p_dec->fmt_out.video.i_sar_den,
 999                      p_dec->fmt_out.video.i_sar_num,
1000                      p_dec->fmt_out.video.i_sar_den, 50000 );
1001
1002         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1003         p_sys->video = p_dec->fmt_out.video;
1004
1005         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
1006                                       &p_dec->fmt_out.video );
1007         if( p_sys->p_vout == NULL )
1008         {
1009             msg_Err( p_dec, "failed to create video output" );
1010             p_dec->b_error = VLC_TRUE;
1011             return NULL;
1012         }
1013
1014         if( p_sys->video.i_rmask )
1015             p_sys->p_vout->render.i_rmask = p_sys->video.i_rmask;
1016         if( p_sys->video.i_gmask )
1017             p_sys->p_vout->render.i_gmask = p_sys->video.i_gmask;
1018         if( p_sys->video.i_bmask )
1019             p_sys->p_vout->render.i_bmask = p_sys->video.i_bmask;
1020     }
1021
1022     /* Get a new picture */
1023     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
1024     {
1025         int i_pic, i_ready_pic = 0;
1026
1027         if( p_dec->b_die || p_dec->b_error )
1028         {
1029             return NULL;
1030         }
1031
1032 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
1033         /* Check the decoder doesn't leak pictures */
1034         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1035              i_pic++ )
1036         {
1037             if( p_pic->i_status == READY_PICTURE )
1038             {
1039                 if( i_ready_pic++ > 0 ) break;
1040                 else continue;
1041             }
1042
1043             if( p_pic->i_status != DISPLAYED_PICTURE &&
1044                 p_pic->i_status != RESERVED_PICTURE &&
1045                 p_pic->i_status != READY_PICTURE ) break;
1046
1047             if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
1048                 break;
1049         }
1050         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
1051         {
1052             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
1053
1054             /* Just free all the pictures */
1055             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
1056                  i_pic++ )
1057             {
1058                 if( p_pic->i_status == RESERVED_PICTURE )
1059                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1060                 if( p_pic->i_refcount > 0 )
1061                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1062             }
1063         }
1064 #undef p_pic
1065
1066         msleep( VOUT_OUTMEM_SLEEP );
1067     }
1068
1069     return p_pic;
1070 }
1071
1072 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
1073 {
1074     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
1075 }
1076
1077 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
1078 {
1079     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
1080 }
1081
1082 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
1083 {
1084     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
1085 }
1086
1087 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1088 {
1089     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1090     vout_thread_t *p_vout = NULL;
1091     subpicture_t *p_subpic;
1092     int i_attempts = 30;
1093
1094     while( i_attempts-- )
1095     {
1096         if( p_dec->b_die || p_dec->b_error ) break;
1097
1098         p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1099         if( p_vout ) break;
1100
1101         msleep( VOUT_DISPLAY_DELAY );
1102     }
1103
1104     if( !p_vout )
1105     {
1106         msg_Warn( p_dec, "no vout found, dropping subpicture" );
1107         return NULL;
1108     }
1109
1110     if( p_sys->p_spu_vout != p_vout )
1111     {
1112         spu_Control( p_vout->p_spu, SPU_CHANNEL_REGISTER,
1113                      &p_sys->i_spu_channel );
1114         p_sys->p_spu_vout = p_vout;
1115     }
1116
1117     p_subpic = spu_CreateSubpicture( p_vout->p_spu );
1118     if( p_subpic )
1119     {
1120         p_subpic->i_channel = p_sys->i_spu_channel;
1121     }
1122
1123     vlc_object_release( p_vout );
1124
1125     return p_subpic;
1126 }
1127
1128 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1129 {
1130     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
1131     vout_thread_t *p_vout = NULL;
1132
1133     p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
1134     if( !p_vout || p_sys->p_spu_vout != p_vout )
1135     {
1136         if( p_vout )
1137             vlc_object_release( p_vout );
1138         msg_Warn( p_dec, "no vout found, leaking subpicture" );
1139         return;
1140     }
1141
1142     spu_DestroySubpicture( p_vout->p_spu, p_subpic );
1143
1144     vlc_object_release( p_vout );
1145 }
1146