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