git.sesse.net Git - vlc/blob - src/input/input_dec.c

   1 /*****************************************************************************
   2  * input_dec.c: Functions for the management of decoders
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@netcourrier.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdlib.h>
  29 #include <string.h>                                    /* memcpy(), memset() */
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/decoder.h>
  33 #include <vlc/vout.h>
  34
  35 #include "stream_output.h"
  36
  37 #include "input_ext-intf.h"
  38 #include "input_ext-plugins.h"
  39
  40 #include "codecs.h"
  41
  42 static void input_NullPacket( input_thread_t *, es_descriptor_t * );
  43
  44 static decoder_t * CreateDecoder( input_thread_t *, es_descriptor_t *, int );
  45 static int         DecoderThread( decoder_t * );
  46 static int         DecoderDecode( decoder_t * p_dec, block_t *p_block );
  47 static void        DeleteDecoder( decoder_t * );
  48
  49 /* Buffers allocation callbacks for the decoders */
  50 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
  51 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
  52
  53 static picture_t *vout_new_buffer( decoder_t * );
  54 static void vout_del_buffer( decoder_t *, picture_t * );
  55 static void vout_link_picture( decoder_t *, picture_t * );
  56 static void vout_unlink_picture( decoder_t *, picture_t * );
  57
  58 static es_format_t null_es_format = {0};
  59
  60 struct decoder_owner_sys_t
  61 {
  62     vlc_bool_t      b_own_thread;
  63
  64     input_thread_t  *p_input;
  65
  66     aout_instance_t *p_aout;
  67     aout_input_t    *p_aout_input;
  68
  69     vout_thread_t   *p_vout;
  70
  71     sout_instance_t         *p_sout;
  72     sout_packetizer_input_t *p_sout_input;
  73
  74     /* Some decoders require already packetized data (ie. not truncated) */
  75     decoder_t *p_packetizer;
  76
  77     /* Current format in use by the output */
  78     video_format_t video;
  79     audio_format_t audio;
  80     es_format_t    sout;
  81
  82     /* fifo */
  83     block_fifo_t *p_fifo;
  84
  85     /* */
  86     input_buffers_t *p_method_data;
  87     es_descriptor_t *p_es_descriptor;
  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_RunDecoder( input_thread_t * p_input, es_descriptor_t * p_es )
  99 {
 100     decoder_t   *p_dec = NULL;
 101     vlc_value_t val;
 102
 103     /* If we are in sout mode, search for packetizer module */
 104     if( !p_es->b_force_decoder && p_input->stream.p_sout )
 105     {
 106         /* Create the decoder configuration structure */
 107         p_dec = CreateDecoder( p_input, p_es, VLC_OBJECT_PACKETIZER );
 108         if( p_dec == NULL )
 109         {
 110             msg_Err( p_input, "could not create packetizer" );
 111             return NULL;
 112         }
 113     }
 114     else
 115     {
 116         /* Create the decoder configuration structure */
 117         p_dec = CreateDecoder( p_input, p_es, VLC_OBJECT_DECODER );
 118         if( p_dec == NULL )
 119         {
 120             msg_Err( p_input, "could not create decoder" );
 121             return NULL;
 122         }
 123     }
 124
 125     if( !p_dec->p_module )
 126     {
 127         msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
 128                  "VLC probably does not support this sound or video format.",
 129                  (char*)&p_dec->fmt_in.i_codec );
 130
 131         DeleteDecoder( p_dec );
 132         vlc_object_destroy( p_dec );
 133         return NULL;
 134     }
 135
 136     var_Get( p_input, "minimize-threads", &val );
 137     p_dec->p_owner->b_own_thread = val.b_bool ? VLC_FALSE : VLC_TRUE;
 138
 139     if( p_dec->p_owner->b_own_thread )
 140     {
 141         int i_priority;
 142         if ( p_es->i_cat == AUDIO_ES )
 143         {
 144             i_priority = VLC_THREAD_PRIORITY_AUDIO;
 145         }
 146         else
 147         {
 148             i_priority = VLC_THREAD_PRIORITY_VIDEO;
 149         }
 150
 151         /* Spawn the decoder thread */
 152         if( vlc_thread_create( p_dec, "decoder", DecoderThread,
 153                                i_priority, VLC_FALSE ) )
 154         {
 155             msg_Err( p_dec, "cannot spawn decoder thread \"%s\"",
 156                              p_dec->p_module->psz_object_name );
 157             module_Unneed( p_dec, p_dec->p_module );
 158             DeleteDecoder( p_dec );
 159             vlc_object_destroy( p_dec );
 160             return NULL;
 161         }
 162     }
 163
 164     /* Select a new ES */
 165     INSERT_ELEM( p_input->stream.pp_selected_es,
 166                  p_input->stream.i_selected_es_number,
 167                  p_input->stream.i_selected_es_number,
 168                  p_es );
 169
 170     p_input->stream.b_changed = 1;
 171
 172     return p_dec;
 173 }
 174
 175 /**
 176  * Kills a decoder thread and waits until it's finished
 177  *
 178  * \param p_input the input thread
 179  * \param p_es the es descriptor
 180  * \return nothing
 181  */
 182 void input_EndDecoder( input_thread_t * p_input, es_descriptor_t * p_es )
 183 {
 184     decoder_t *p_dec = p_es->p_dec;
 185     int i_dummy;
 186
 187     p_dec->b_die = VLC_TRUE;
 188
 189     if( p_dec->p_owner->b_own_thread )
 190     {
 191         /* Make sure the thread leaves the NextDataPacket() function by
 192          * sending it a few null packets. */
 193         for( i_dummy = 0; i_dummy < PADDING_PACKET_NUMBER; i_dummy++ )
 194         {
 195             input_NullPacket( p_input, p_es );
 196         }
 197
 198         if( p_es->p_pes != NULL )
 199         {
 200             input_DecodePES( p_es->p_dec, p_es->p_pes );
 201         }
 202
 203         /* Waiting for the thread to exit */
 204         /* I thought that unlocking was better since thread join can be long
 205          * but it actually creates late pictures and freezes --stef */
 206         /* vlc_mutex_unlock( &p_input->stream.stream_lock ); */
 207         vlc_thread_join( p_dec );
 208         /* vlc_mutex_lock( &p_input->stream.stream_lock ); */
 209 #if 0
 210         /* XXX We don't do it here because of dll loader that want close in the
 211          * same thread than open/decode */
 212         /* Unneed module */
 213         module_Unneed( p_dec, p_dec->p_module );
 214 #endif
 215     }
 216     else
 217     {
 218         module_Unneed( p_dec, p_dec->p_module );
 219     }
 220
 221     /* Delete decoder configuration */
 222     DeleteDecoder( p_dec );
 223
 224     /* Delete the decoder */
 225     vlc_object_destroy( p_dec );
 226
 227     /* Tell the input there is no more decoder */
 228     p_es->p_dec = NULL;
 229
 230     p_input->stream.b_changed = 1;
 231 }
 232
 233 /**
 234  * Put a PES in the decoder's fifo.
 235  *
 236  * \param p_dec the decoder object
 237  * \param p_pes the pes packet
 238  * \return nothing
 239  */
 240 void input_DecodePES( decoder_t * p_dec, pes_packet_t * p_pes )
 241 {
 242     data_packet_t *p_data;
 243     int     i_size = 0;
 244
 245     for( p_data = p_pes->p_first; p_data != NULL; p_data = p_data->p_next )
 246     {
 247         i_size += p_data->p_payload_end - p_data->p_payload_start;
 248     }
 249     if( i_size > 0 )
 250     {
 251         block_t *p_block = block_New( p_dec, i_size );
 252         if( p_block )
 253         {
 254             uint8_t *p_buffer = p_block->p_buffer;
 255
 256             for( p_data = p_pes->p_first; p_data != NULL; p_data = p_data->p_next )
 257             {
 258                 int i_copy = p_data->p_payload_end - p_data->p_payload_start;
 259
 260                 memcpy( p_buffer, p_data->p_payload_start, i_copy );
 261
 262                 p_buffer += i_copy;
 263             }
 264             p_block->i_pts = p_pes->i_pts;
 265             p_block->i_dts = p_pes->i_dts;
 266             if( p_pes->b_discontinuity )
 267                 p_block->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 268             p_block->i_rate = p_pes->i_rate;
 269
 270             input_DecodeBlock( p_dec, p_block );
 271         }
 272     }
 273
 274     input_DeletePES( p_dec->p_owner->p_method_data, p_pes );
 275 }
 276
 277 /**
 278  * Put a block_t in the decoder's fifo.
 279  *
 280  * \param p_dec the decoder object
 281  * \param p_block the data block
 282  */
 283 void input_DecodeBlock( decoder_t * p_dec, block_t *p_block )
 284 {
 285     if( p_dec->p_owner->b_own_thread )
 286     {
 287         block_FifoPut( p_dec->p_owner->p_fifo, p_block );
 288
 289         if( p_dec->p_owner->p_input->b_out_pace_control )
 290         {
 291             /* FIXME !!!!! */
 292             while( !p_dec->b_die && !p_dec->b_error &&
 293                    p_dec->p_owner->p_fifo->i_depth > 10 )
 294             {
 295                 msleep( 1000 );
 296             }
 297         }
 298     }
 299     else
 300     {
 301         if( p_dec->b_error || p_block->i_buffer <= 0 )
 302         {
 303             block_Release( p_block );
 304         }
 305         else
 306         {
 307             DecoderDecode( p_dec, p_block );
 308         }
 309     }
 310 }
 311
 312 /**
 313  * Create a NULL packet for padding in case of a data loss
 314  *
 315  * \param p_input the input thread
 316  * \param p_es es descriptor
 317  * \return nothing
 318  */
 319 static void input_NullPacket( input_thread_t * p_input,
 320                               es_descriptor_t * p_es )
 321 {
 322     block_t *p_block = block_New( p_input, PADDING_PACKET_SIZE );
 323     if( p_block )
 324     {
 325         memset( p_block->p_buffer, 0, PADDING_PACKET_SIZE );
 326         p_block->i_flags |= BLOCK_FLAG_DISCONTINUITY;
 327
 328         block_FifoPut( p_es->p_dec->p_owner->p_fifo, p_block );
 329     }
 330 }
 331
 332 /**
 333  * Send a NULL packet to the decoders
 334  *
 335  * \param p_input the input thread
 336  * \return nothing
 337  */
 338 void input_EscapeDiscontinuity( input_thread_t * p_input )
 339 {
 340     unsigned int i_es, i;
 341
 342     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 343     {
 344         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 345
 346         if( p_es->p_dec != NULL )
 347         {
 348             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 349             {
 350                 input_NullPacket( p_input, p_es );
 351             }
 352         }
 353     }
 354 }
 355
 356 /**
 357  * Send a NULL packet to the audio decoders
 358  *
 359  * \param p_input the input thread
 360  * \return nothing
 361  */
 362 void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
 363 {
 364     unsigned int i_es, i;
 365
 366     for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
 367     {
 368         es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
 369
 370         if( p_es->p_dec != NULL && p_es->i_cat == AUDIO_ES )
 371         {
 372             for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
 373             {
 374                 input_NullPacket( p_input, p_es );
 375             }
 376         }
 377     }
 378 }
 379
 380 /**
 381  * Create a decoder object
 382  *
 383  * \param p_input the input thread
 384  * \param p_es the es descriptor
 385  * \param i_object_type Object type as define in include/vlc_objects.h
 386  * \return the decoder object
 387  */
 388 static decoder_t * CreateDecoder( input_thread_t * p_input,
 389                                   es_descriptor_t * p_es, int i_object_type )
 390 {
 391     decoder_t *p_dec;
 392
 393     p_dec = vlc_object_create( p_input, i_object_type );
 394     if( p_dec == NULL )
 395     {
 396         msg_Err( p_input, "out of memory" );
 397         return NULL;
 398     }
 399
 400     p_dec->pf_decode_audio = 0;
 401     p_dec->pf_decode_video = 0;
 402     p_dec->pf_decode_sub = 0;
 403     p_dec->pf_packetize = 0;
 404
 405     /* Initialize the decoder fifo */
 406     p_dec->p_module = NULL;
 407
 408     es_format_Copy( &p_dec->fmt_in, &p_es->fmt );
 409
 410     if( p_es->p_waveformatex )
 411     {
 412 #define p_wf ((WAVEFORMATEX *)p_es->p_waveformatex)
 413         p_dec->fmt_in.audio.i_channels = p_wf->nChannels;
 414         p_dec->fmt_in.audio.i_rate = p_wf->nSamplesPerSec;
 415         p_dec->fmt_in.i_bitrate = p_wf->nAvgBytesPerSec * 8;
 416         p_dec->fmt_in.audio.i_blockalign = p_wf->nBlockAlign;
 417         p_dec->fmt_in.audio.i_bitspersample = p_wf->wBitsPerSample;
 418         p_dec->fmt_in.i_extra = p_wf->cbSize;
 419         p_dec->fmt_in.p_extra = NULL;
 420         if( p_wf->cbSize )
 421         {
 422             p_dec->fmt_in.p_extra = malloc( p_wf->cbSize );
 423             memcpy( p_dec->fmt_in.p_extra, &p_wf[1], p_wf->cbSize );
 424         }
 425     }
 426
 427     if( p_es->p_bitmapinfoheader )
 428     {
 429 #define p_bih ((BITMAPINFOHEADER *) p_es->p_bitmapinfoheader)
 430         p_dec->fmt_in.i_extra = p_bih->biSize - sizeof(BITMAPINFOHEADER);
 431         p_dec->fmt_in.p_extra = NULL;
 432         if( p_dec->fmt_in.i_extra )
 433         {
 434             p_dec->fmt_in.p_extra = malloc( p_dec->fmt_in.i_extra );
 435             memcpy( p_dec->fmt_in.p_extra, &p_bih[1], p_dec->fmt_in.i_extra );
 436         }
 437
 438         p_dec->fmt_in.video.i_width = p_bih->biWidth;
 439         p_dec->fmt_in.video.i_height = p_bih->biHeight;
 440     }
 441
 442     /* FIXME
 443      *  - 1: beurk
 444      *  - 2: I'm not sure there isn't any endian problem here (spu)... */
 445     if( p_es->i_cat == SPU_ES && p_es->p_demux_data )
 446     {
 447         if( ( p_es->i_fourcc == VLC_FOURCC( 's', 'p', 'u', ' ' ) ||
 448               p_es->i_fourcc == VLC_FOURCC( 's', 'p', 'u', 'b' ) ) &&
 449             *((uint32_t*)p_es->p_demux_data) == 0xBeef )
 450         {
 451             memcpy( p_dec->fmt_in.subs.spu.palette,
 452                     p_es->p_demux_data, 17 * 4 );
 453         }
 454         else if( p_es->i_fourcc == VLC_FOURCC( 'd', 'v', 'b', 's' ) )
 455         {
 456             dvb_spuinfo_t *p_dvbs = (dvb_spuinfo_t*)p_es->p_demux_data;
 457
 458             p_dec->fmt_in.subs.dvb.i_id = p_dvbs->i_id;
 459         }
 460     }
 461
 462     p_dec->fmt_in.i_cat = p_es->i_cat;
 463     p_dec->fmt_in.i_codec = p_es->i_fourcc;
 464
 465     p_dec->fmt_out = null_es_format;
 466
 467     /* Allocate our private structure for the decoder */
 468     p_dec->p_owner = (decoder_owner_sys_t*)malloc(sizeof(decoder_owner_sys_t));
 469     if( p_dec->p_owner == NULL )
 470     {
 471         msg_Err( p_dec, "out of memory" );
 472         return NULL;
 473     }
 474     p_dec->p_owner->b_own_thread = VLC_TRUE;
 475     p_dec->p_owner->p_input = p_input;
 476     p_dec->p_owner->p_aout = NULL;
 477     p_dec->p_owner->p_aout_input = NULL;
 478     p_dec->p_owner->p_vout = NULL;
 479     p_dec->p_owner->p_sout = p_input->stream.p_sout;
 480     p_dec->p_owner->p_sout_input = NULL;
 481     p_dec->p_owner->p_packetizer = NULL;
 482     p_dec->p_owner->p_es_descriptor = p_es;
 483
 484
 485     /* decoder fifo */
 486     if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
 487     {
 488         msg_Err( p_dec, "out of memory" );
 489         return NULL;
 490     }
 491     p_dec->p_owner->p_method_data = p_input->p_method_data;
 492
 493     /* Set buffers allocation callbacks for the decoders */
 494     p_dec->pf_aout_buffer_new = aout_new_buffer;
 495     p_dec->pf_aout_buffer_del = aout_del_buffer;
 496     p_dec->pf_vout_buffer_new = vout_new_buffer;
 497     p_dec->pf_vout_buffer_del = vout_del_buffer;
 498     p_dec->pf_picture_link    = vout_link_picture;
 499     p_dec->pf_picture_unlink  = vout_unlink_picture;
 500
 501     vlc_object_attach( p_dec, p_input );
 502
 503     /* Find a suitable decoder/packetizer module */
 504     if( i_object_type == VLC_OBJECT_DECODER )
 505         p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
 506     else
 507         p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
 508
 509     /* Check if decoder requires already packetized data */
 510     if( i_object_type == VLC_OBJECT_DECODER &&
 511         p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
 512     {
 513         p_dec->p_owner->p_packetizer =
 514             vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
 515         if( p_dec->p_owner->p_packetizer )
 516         {
 517             p_dec->p_owner->p_packetizer->fmt_in = null_es_format;
 518             p_dec->p_owner->p_packetizer->fmt_out = null_es_format;
 519             es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
 520                             &p_dec->fmt_in );
 521
 522             vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
 523
 524             p_dec->p_owner->p_packetizer->p_module =
 525                 module_Need( p_dec->p_owner->p_packetizer,
 526                              "packetizer", "$packetizer", 0 );
 527
 528             if( !p_dec->p_owner->p_packetizer->p_module )
 529             {
 530                 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 531                 vlc_object_detach( p_dec->p_owner->p_packetizer );
 532                 vlc_object_destroy( p_dec->p_owner->p_packetizer );
 533             }
 534         }
 535     }
 536
 537     return p_dec;
 538 }
 539
 540 /**
 541  * The decoding main loop
 542  *
 543  * \param p_dec the decoder
 544  * \return 0
 545  */
 546 static int DecoderThread( decoder_t * p_dec )
 547 {
 548     block_t       *p_block;
 549
 550     /* The decoder's main loop */
 551     while( !p_dec->b_die && !p_dec->b_error )
 552     {
 553         if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
 554         {
 555             p_dec->b_error = 1;
 556             break;
 557         }
 558         if( p_block->i_buffer <= 0 )
 559         {
 560             block_Release( p_block );
 561             continue;
 562         }
 563         if( DecoderDecode( p_dec, p_block ) )
 564         {
 565             break;
 566         }
 567     }
 568
 569     while( !p_dec->b_die )
 570     {
 571         /* Trash all received PES packets */
 572         p_block = block_FifoGet( p_dec->p_owner->p_fifo );
 573         if( p_block )
 574         {
 575             block_Release( p_block );
 576         }
 577     }
 578
 579     /* XXX We do it here because of dll loader that want close in the
 580      * same thread than open/decode */
 581     /* Unneed module */
 582     module_Unneed( p_dec, p_dec->p_module );
 583
 584     return 0;
 585 }
 586
 587 /**
 588  * Decode a block
 589  *
 590  * \param p_dec the decoder object
 591  * \param p_block the block to decode
 592  * \return VLC_SUCCESS or an error code
 593  */
 594 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
 595 {
 596     if( p_block->i_buffer <= 0 )
 597     {
 598         block_Release( p_block );
 599         return VLC_SUCCESS;
 600     }
 601
 602     if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
 603     {
 604         block_t *p_sout_block;
 605
 606         while( (p_sout_block = p_dec->pf_packetize( p_dec, &p_block )) )
 607         {
 608             if( !p_dec->p_owner->p_sout_input )
 609             {
 610                 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
 611                 if( p_dec->p_owner->p_es_descriptor->p_pgrm )
 612                 {
 613                     p_dec->p_owner->sout.i_group =
 614                         p_dec->p_owner->p_es_descriptor->p_pgrm->i_number;
 615                 }
 616                 p_dec->p_owner->sout.i_id =
 617                     p_dec->p_owner->p_es_descriptor->i_id - 1;
 618                 if( p_dec->fmt_in.psz_language )
 619                 {
 620                     p_dec->p_owner->sout.psz_language =
 621                         strdup( p_dec->fmt_in.psz_language );
 622                 }
 623
 624                 p_dec->p_owner->p_sout_input =
 625                     sout_InputNew( p_dec->p_owner->p_sout,
 626                                    &p_dec->p_owner->sout );
 627
 628                 if( p_dec->p_owner->p_sout_input == NULL )
 629                 {
 630                     msg_Err( p_dec, "cannot create packetizer output" );
 631                     p_dec->b_error = VLC_TRUE;
 632
 633                     while( p_sout_block )
 634                     {
 635                         block_t *p_next = p_sout_block->p_next;
 636                         block_Release( p_sout_block );
 637                         p_sout_block = p_next;
 638                     }
 639                     break;
 640                 }
 641             }
 642
 643             while( p_sout_block )
 644             {
 645                 block_t       *p_next = p_sout_block->p_next;
 646                 sout_buffer_t *p_sout_buffer;
 647
 648                 p_sout_buffer =
 649                     sout_BufferNew( p_dec->p_owner->p_sout_input->p_sout,
 650                                     p_sout_block->i_buffer );
 651                 if( p_sout_buffer == NULL )
 652                 {
 653                     msg_Err( p_dec, "cannot get sout buffer" );
 654                     break;
 655                 }
 656
 657                 memcpy( p_sout_buffer->p_buffer, p_sout_block->p_buffer,
 658                         p_sout_block->i_buffer );
 659
 660                 p_sout_buffer->i_pts = p_sout_block->i_pts;
 661                 p_sout_buffer->i_dts = p_sout_block->i_dts;
 662                 p_sout_buffer->i_length = p_sout_block->i_length;
 663                 p_sout_buffer->i_flags =
 664                     ( p_sout_block->i_flags << SOUT_BUFFER_FLAGS_BLOCK_SHIFT )
 665                     & SOUT_BUFFER_FLAGS_BLOCK_MASK;
 666
 667                 block_Release( p_sout_block );
 668
 669                 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
 670                                       p_sout_buffer );
 671
 672                 p_sout_block = p_next;
 673             }
 674
 675             /* For now it's enough, as only sout inpact on this flag */
 676             if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
 677                 p_dec->p_owner->p_input->b_out_pace_control )
 678             {
 679                 msg_Dbg( p_dec, "switching to synch mode" );
 680                 p_dec->p_owner->p_input->b_out_pace_control = VLC_FALSE;
 681             }
 682             else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
 683                      !p_dec->p_owner->p_input->b_out_pace_control )
 684             {
 685                 msg_Dbg( p_dec, "switching to asynch mode" );
 686                 p_dec->p_owner->p_input->b_out_pace_control = VLC_TRUE;
 687             }
 688         }
 689     }
 690     else if( p_dec->fmt_in.i_cat == AUDIO_ES )
 691     {
 692         aout_buffer_t *p_aout_buf;
 693
 694         if( p_dec->p_owner->p_packetizer )
 695         {
 696             block_t *p_packetized_block;
 697             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 698
 699             while( (p_packetized_block =
 700                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 701             {
 702                 while( (p_aout_buf =
 703                         p_dec->pf_decode_audio( p_dec, &p_packetized_block )) )
 704                 {
 705                     aout_DecPlay( p_dec->p_owner->p_aout,
 706                                   p_dec->p_owner->p_aout_input, p_aout_buf );
 707                 }
 708             }
 709         }
 710         else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
 711         {
 712             aout_DecPlay( p_dec->p_owner->p_aout,
 713                           p_dec->p_owner->p_aout_input, p_aout_buf );
 714         }
 715     }
 716     else if( p_dec->fmt_in.i_cat == VIDEO_ES )
 717     {
 718         picture_t *p_pic;
 719
 720         if( p_dec->p_owner->p_packetizer )
 721         {
 722             block_t *p_packetized_block;
 723             decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
 724
 725             while( (p_packetized_block =
 726                     p_packetizer->pf_packetize( p_packetizer, &p_block )) )
 727             {
 728                 while( (p_pic =
 729                         p_dec->pf_decode_video( p_dec, &p_packetized_block )) )
 730                 {
 731                     vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
 732                                       p_pic->date );
 733                     vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 734                 }
 735             }
 736         }
 737         else while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
 738         {
 739             vout_DatePicture( p_dec->p_owner->p_vout, p_pic, p_pic->date );
 740             vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
 741         }
 742     }
 743     else if( p_dec->fmt_in.i_cat == SPU_ES )
 744     {
 745         p_dec->pf_decode_sub( p_dec, &p_block );
 746     }
 747     else
 748     {
 749         msg_Err( p_dec, "unknown ES format" );
 750         p_dec->b_error = 1;
 751     }
 752
 753     return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
 754 }
 755
 756 /**
 757  * Destroys a decoder object
 758  *
 759  * \param p_dec the decoder object
 760  * \return nothing
 761  */
 762 static void DeleteDecoder( decoder_t * p_dec )
 763 {
 764     vlc_object_detach( p_dec );
 765
 766     msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
 767              (char*)&p_dec->fmt_in.i_codec,
 768              p_dec->p_owner->p_fifo->i_depth );
 769
 770     /* Free all packets still in the decoder fifo. */
 771     block_FifoEmpty( p_dec->p_owner->p_fifo );
 772     block_FifoRelease( p_dec->p_owner->p_fifo );
 773
 774    /* Cleanup */
 775     if( p_dec->p_owner->p_aout_input )
 776         aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
 777
 778     if( p_dec->p_owner->p_vout )
 779     {
 780         int i_pic;
 781
 782 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 783         /* Hack to make sure all the the pictures are freed by the decoder */
 784         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 785              i_pic++ )
 786         {
 787             if( p_pic->i_status == RESERVED_PICTURE )
 788                 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 789             if( p_pic->i_refcount > 0 )
 790                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 791         }
 792 #undef p_pic
 793
 794         /* We are about to die. Reattach video output to p_vlc. */
 795         vout_Request( p_dec, p_dec->p_owner->p_vout, 0, 0, 0, 0 );
 796     }
 797
 798     if( p_dec->p_owner->p_sout_input )
 799     {
 800         sout_InputDelete( p_dec->p_owner->p_sout_input );
 801         es_format_Clean( &p_dec->p_owner->sout );
 802     }
 803
 804     es_format_Clean( &p_dec->fmt_in );
 805     es_format_Clean( &p_dec->fmt_out );
 806
 807     if( p_dec->p_owner->p_packetizer )
 808     {
 809         module_Unneed( p_dec->p_owner->p_packetizer,
 810                        p_dec->p_owner->p_packetizer->p_module );
 811         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
 812         es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
 813         vlc_object_detach( p_dec->p_owner->p_packetizer );
 814         vlc_object_destroy( p_dec->p_owner->p_packetizer );
 815     }
 816
 817     free( p_dec->p_owner );
 818 }
 819
 820 /*****************************************************************************
 821  * Buffers allocation callbacks for the decoders
 822  *****************************************************************************/
 823 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
 824 {
 825     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 826     aout_buffer_t *p_buffer;
 827
 828     if( p_sys->p_aout_input != NULL &&
 829         ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
 830           p_dec->fmt_out.audio.i_original_channels !=
 831               p_sys->audio.i_original_channels ||
 832           p_dec->fmt_out.audio.i_bytes_per_frame !=
 833               p_sys->audio.i_bytes_per_frame ) )
 834     {
 835         /* Parameters changed, restart the aout */
 836         aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
 837         p_sys->p_aout_input = NULL;
 838     }
 839
 840     if( p_sys->p_aout_input == NULL )
 841     {
 842         p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
 843         p_sys->audio = p_dec->fmt_out.audio;
 844         p_sys->p_aout_input =
 845             aout_DecNew( p_dec, &p_sys->p_aout, &p_sys->audio );
 846         if( p_sys->p_aout_input == NULL )
 847         {
 848             msg_Err( p_dec, "failed to create audio output" );
 849             p_dec->b_error = VLC_TRUE;
 850             return NULL;
 851         }
 852         p_dec->fmt_out.audio.i_bytes_per_frame =
 853             p_sys->audio.i_bytes_per_frame;
 854     }
 855
 856     p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
 857                                   i_samples );
 858
 859     return p_buffer;
 860 }
 861
 862 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
 863 {
 864     aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
 865                           p_dec->p_owner->p_aout_input, p_buffer );
 866 }
 867
 868 static picture_t *vout_new_buffer( decoder_t *p_dec )
 869 {
 870     decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
 871     picture_t *p_pic;
 872
 873     if( p_sys->p_vout == NULL ||
 874         p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
 875         p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
 876         p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
 877         p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
 878     {
 879         if( !p_dec->fmt_out.video.i_width ||
 880             !p_dec->fmt_out.video.i_height )
 881         {
 882             /* Can't create a new vout without display size */
 883             return NULL;
 884         }
 885
 886         p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
 887         p_sys->video = p_dec->fmt_out.video;
 888
 889         p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
 890                                       p_sys->video.i_width,
 891                                       p_sys->video.i_height,
 892                                       p_sys->video.i_chroma,
 893                                       p_sys->video.i_aspect );
 894
 895         if( p_sys->p_vout == NULL )
 896         {
 897             msg_Err( p_dec, "failed to create video output" );
 898             p_dec->b_error = VLC_TRUE;
 899             return NULL;
 900         }
 901     }
 902
 903     /* Get a new picture */
 904     while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
 905     {
 906         int i_pic, i_ready_pic = 0;
 907
 908         if( p_dec->b_die || p_dec->b_error )
 909         {
 910             return NULL;
 911         }
 912
 913 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
 914         /* Check the decoder doesn't leak pictures */
 915         for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 916              i_pic++ )
 917         {
 918             if( p_pic->i_status == READY_PICTURE && i_ready_pic++ > 0 ) break;
 919
 920             if( p_pic->i_status != DISPLAYED_PICTURE &&
 921                 p_pic->i_status != RESERVED_PICTURE &&
 922                 p_pic->i_status != READY_PICTURE ) break;
 923
 924             if( !p_pic->i_refcount ) break;
 925         }
 926         if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
 927         {
 928             msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
 929
 930             /* Just free all the pictures */
 931             for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
 932                  i_pic++ )
 933             {
 934                 if( p_pic->i_status == RESERVED_PICTURE )
 935                     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 936                 if( p_pic->i_refcount > 0 )
 937                 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 938             }
 939         }
 940 #undef p_pic
 941
 942         msleep( VOUT_OUTMEM_SLEEP );
 943     }
 944
 945     return p_pic;
 946 }
 947
 948 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
 949 {
 950     vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
 951 }
 952
 953 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
 954 {
 955     vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
 956 }
 957
 958 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
 959 {
 960     vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
 961 }