git.sesse.net Git - vlc/blob - modules/demux/asf/asf.c

   1 /*****************************************************************************
   2  * asf.c : ASF demux module
   3  *****************************************************************************
   4  * Copyright (C) 2002-2003 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28
  29 #include <vlc/vlc.h>
  30 #include <vlc/input.h>
  31
  32 #include "vlc_meta.h"
  33
  34 #include "codecs.h"                        /* BITMAPINFOHEADER, WAVEFORMATEX */
  35 #include "libasf.h"
  36
  37 /* TODO
  38  *  - add support for the newly added object: language, bitrate,
  39  *                                            extended stream properties.
  40  */
  41
  42 /*****************************************************************************
  43  * Module descriptor
  44  *****************************************************************************/
  45 static int  Open  ( vlc_object_t * );
  46 static void Close ( vlc_object_t * );
  47
  48 vlc_module_begin();
  49     set_category( CAT_INPUT );
  50     set_subcategory( SUBCAT_INPUT_DEMUX );
  51     set_description( _("ASF v1.0 demuxer") );
  52     set_capability( "demux2", 200 );
  53     set_callbacks( Open, Close );
  54     add_shortcut( "asf" );
  55 vlc_module_end();
  56
  57
  58 /*****************************************************************************
  59  * Local prototypes
  60  *****************************************************************************/
  61 static int Demux  ( demux_t * );
  62 static int Control( demux_t *, int i_query, va_list args );
  63
  64 typedef struct
  65 {
  66     int i_cat;
  67
  68     es_out_id_t     *p_es;
  69
  70     asf_object_stream_properties_t *p_sp;
  71
  72     mtime_t i_time;
  73
  74     block_t         *p_frame; /* use to gather complete frame */
  75
  76 } asf_track_t;
  77
  78 struct demux_sys_t
  79 {
  80     mtime_t             i_time;     /* µs */
  81     mtime_t             i_length;   /* length of file file */
  82     int64_t             i_bitrate;  /* global file bitrate */
  83
  84     asf_object_root_t            *p_root;
  85     asf_object_file_properties_t *p_fp;
  86
  87     unsigned int        i_track;
  88     asf_track_t         *track[128];
  89
  90     int64_t             i_data_begin;
  91     int64_t             i_data_end;
  92
  93     vlc_meta_t          *meta;
  94 };
  95
  96 static mtime_t  GetMoviePTS( demux_sys_t * );
  97 static int      DemuxInit( demux_t * );
  98 static void     DemuxEnd( demux_t * );
  99 static int      DemuxPacket( demux_t * );
 100
 101 /*****************************************************************************
 102  * Open: check file and initializes ASF structures
 103  *****************************************************************************/
 104 static int Open( vlc_object_t * p_this )
 105 {
 106     demux_t     *p_demux = (demux_t *)p_this;
 107     demux_sys_t *p_sys;
 108     guid_t      guid;
 109     uint8_t     *p_peek;
 110
 111     /* a little test to see if it could be a asf stream */
 112     if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
 113     {
 114         msg_Warn( p_demux, "ASF plugin discarded (cannot peek)" );
 115         return VLC_EGENERIC;
 116     }
 117     ASF_GetGUID( &guid, p_peek );
 118     if( !ASF_CmpGUID( &guid, &asf_object_header_guid ) )
 119     {
 120         msg_Warn( p_demux, "ASF plugin discarded (not a valid file)" );
 121         return VLC_EGENERIC;
 122     }
 123
 124     /* Set p_demux fields */
 125     p_demux->pf_demux = Demux;
 126     p_demux->pf_control = Control;
 127     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 128     memset( p_sys, 0, sizeof( demux_sys_t ) );
 129
 130     /* Load the headers */
 131     if( DemuxInit( p_demux ) )
 132     {
 133         return VLC_EGENERIC;
 134     }
 135     return VLC_SUCCESS;
 136 }
 137
 138
 139 /*****************************************************************************
 140  * Demux: read packet and send them to decoders
 141  *****************************************************************************/
 142 static int Demux( demux_t *p_demux )
 143 {
 144     demux_sys_t *p_sys = p_demux->p_sys;
 145
 146     for( ;; )
 147     {
 148         uint8_t *p_peek;
 149         mtime_t i_length;
 150         mtime_t i_time_begin = GetMoviePTS( p_sys );
 151         int i_result;
 152
 153         if( p_demux->b_die )
 154         {
 155             break;
 156         }
 157
 158         /* Check if we have concatenated files */
 159         if( stream_Peek( p_demux->s, &p_peek, 16 ) == 16 )
 160         {
 161             guid_t guid;
 162
 163             ASF_GetGUID( &guid, p_peek );
 164             if( ASF_CmpGUID( &guid, &asf_object_header_guid ) )
 165             {
 166                 msg_Warn( p_demux, "Found a new ASF header" );
 167                 /* We end this stream */
 168                 DemuxEnd( p_demux );
 169
 170                 /* And we prepare to read the next one */
 171                 if( DemuxInit( p_demux ) )
 172                 {
 173                     msg_Err( p_demux, "failed to load the new header" );
 174                     return 0;
 175                 }
 176                 continue;
 177             }
 178         }
 179
 180         /* Read and demux a packet */
 181         if( ( i_result = DemuxPacket( p_demux ) ) <= 0 )
 182         {
 183             return i_result;
 184         }
 185         if( i_time_begin == -1 )
 186         {
 187             i_time_begin = GetMoviePTS( p_sys );
 188         }
 189         else
 190         {
 191             i_length = GetMoviePTS( p_sys ) - i_time_begin;
 192             if( i_length < 0 || i_length >= 40 * 1000 )
 193             {
 194                 break;
 195             }
 196         }
 197     }
 198
 199     /* Set the PCR */
 200     p_sys->i_time = GetMoviePTS( p_sys );
 201     if( p_sys->i_time >= 0 )
 202     {
 203         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time );
 204     }
 205
 206     return 1;
 207 }
 208
 209 /*****************************************************************************
 210  * Close: frees unused data
 211  *****************************************************************************/
 212 static void Close( vlc_object_t * p_this )
 213 {
 214     demux_t     *p_demux = (demux_t *)p_this;
 215
 216     DemuxEnd( p_demux );
 217
 218     free( p_demux->p_sys );
 219 }
 220
 221 /*****************************************************************************
 222  * Control:
 223  *****************************************************************************/
 224 static int Control( demux_t *p_demux, int i_query, va_list args )
 225 {
 226     demux_sys_t *p_sys = p_demux->p_sys;
 227     int64_t     *pi64;
 228     int         i;
 229     vlc_meta_t **pp_meta;
 230
 231     switch( i_query )
 232     {
 233         case DEMUX_SET_TIME:
 234             return VLC_EGENERIC;
 235
 236         case DEMUX_GET_LENGTH:
 237             pi64 = (int64_t*)va_arg( args, int64_t * );
 238             *pi64 = p_sys->i_length;
 239             return VLC_SUCCESS;
 240
 241         case DEMUX_GET_META:
 242             pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
 243             *pp_meta = vlc_meta_Duplicate( p_sys->meta );
 244             return VLC_SUCCESS;
 245
 246         case DEMUX_SET_POSITION:
 247             p_sys->i_time = -1;
 248             for( i = 0; i < 128 ; i++ )
 249             {
 250                 asf_track_t *tk = p_sys->track[i];
 251                 if( tk ) tk->i_time = -1;
 252             }
 253
 254         default:
 255             return demux2_vaControlHelper( p_demux->s,
 256                                            p_sys->i_data_begin, p_sys->i_data_end,
 257                                            p_sys->i_bitrate, p_sys->p_fp->i_min_data_packet_size,
 258                                            i_query, args );
 259     }
 260 }
 261
 262 /*****************************************************************************
 263  *
 264  *****************************************************************************/
 265 static mtime_t GetMoviePTS( demux_sys_t *p_sys )
 266 {
 267     mtime_t i_time;
 268     int     i;
 269
 270     i_time = -1;
 271     for( i = 0; i < 128 ; i++ )
 272     {
 273         asf_track_t *tk = p_sys->track[i];
 274
 275         if( tk && tk->p_es && tk->i_time > 0)
 276         {
 277             if( i_time < 0 )
 278             {
 279                 i_time = tk->i_time;
 280             }
 281             else
 282             {
 283                 i_time = __MIN( i_time, tk->i_time );
 284             }
 285         }
 286     }
 287
 288     return i_time;
 289 }
 290
 291 #define GETVALUE2b( bits, var, def ) \
 292     switch( (bits)&0x03 ) \
 293     { \
 294         case 1: var = p_peek[i_skip]; i_skip++; break; \
 295         case 2: var = GetWLE( p_peek + i_skip );  i_skip+= 2; break; \
 296         case 3: var = GetDWLE( p_peek + i_skip ); i_skip+= 4; break; \
 297         case 0: \
 298         default: var = def; break;\
 299     }
 300
 301 static int DemuxPacket( demux_t *p_demux )
 302 {
 303     demux_sys_t *p_sys = p_demux->p_sys;
 304     int         i_data_packet_min = p_sys->p_fp->i_min_data_packet_size;
 305     uint8_t     *p_peek;
 306     int         i_skip;
 307
 308     int         i_packet_size_left;
 309     int         i_packet_flags;
 310     int         i_packet_property;
 311
 312     int         b_packet_multiple_payload;
 313     int         i_packet_length;
 314     int         i_packet_sequence;
 315     int         i_packet_padding_length;
 316
 317     uint32_t    i_packet_send_time;
 318     uint16_t    i_packet_duration;
 319     int         i_payload;
 320     int         i_payload_count;
 321     int         i_payload_length_type;
 322
 323
 324     if( stream_Peek( p_demux->s, &p_peek,i_data_packet_min)<i_data_packet_min )
 325     {
 326         msg_Warn( p_demux, "cannot peek while getting new packet, EOF ?" );
 327         return 0;
 328     }
 329     i_skip = 0;
 330
 331     /* *** parse error correction if present *** */
 332     if( p_peek[0]&0x80 )
 333     {
 334         unsigned int i_error_correction_length_type;
 335         unsigned int i_error_correction_data_length;
 336         unsigned int i_opaque_data_present;
 337
 338         i_error_correction_data_length = p_peek[0] & 0x0f;  // 4bits
 339         i_opaque_data_present = ( p_peek[0] >> 4 )& 0x01;    // 1bit
 340         i_error_correction_length_type = ( p_peek[0] >> 5 ) & 0x03; // 2bits
 341         i_skip += 1; // skip error correction flags
 342
 343         if( i_error_correction_length_type != 0x00 ||
 344             i_opaque_data_present != 0 ||
 345             i_error_correction_data_length != 0x02 )
 346         {
 347             goto loop_error_recovery;
 348         }
 349
 350         i_skip += i_error_correction_data_length;
 351     }
 352     else
 353     {
 354         msg_Warn( p_demux, "p_peek[0]&0x80 != 0x80" );
 355     }
 356
 357     /* sanity check */
 358     if( i_skip + 2 >= i_data_packet_min )
 359     {
 360         goto loop_error_recovery;
 361     }
 362
 363     i_packet_flags = p_peek[i_skip]; i_skip++;
 364     i_packet_property = p_peek[i_skip]; i_skip++;
 365
 366     b_packet_multiple_payload = i_packet_flags&0x01;
 367
 368     /* read some value */
 369     GETVALUE2b( i_packet_flags >> 5, i_packet_length, i_data_packet_min );
 370     GETVALUE2b( i_packet_flags >> 1, i_packet_sequence, 0 );
 371     GETVALUE2b( i_packet_flags >> 3, i_packet_padding_length, 0 );
 372
 373     i_packet_send_time = GetDWLE( p_peek + i_skip ); i_skip += 4;
 374     i_packet_duration  = GetWLE( p_peek + i_skip ); i_skip += 2;
 375
 376 //        i_packet_size_left = i_packet_length;   // XXX données reellement lu
 377     /* FIXME I have to do that for some file, I don't known why */
 378     i_packet_size_left = i_data_packet_min;
 379
 380     if( b_packet_multiple_payload )
 381     {
 382         i_payload_count = p_peek[i_skip] & 0x3f;
 383         i_payload_length_type = ( p_peek[i_skip] >> 6 )&0x03;
 384         i_skip++;
 385     }
 386     else
 387     {
 388         i_payload_count = 1;
 389         i_payload_length_type = 0x02; // unused
 390     }
 391
 392     for( i_payload = 0; i_payload < i_payload_count ; i_payload++ )
 393     {
 394         asf_track_t   *tk;
 395
 396         int i_stream_number;
 397         int i_media_object_number;
 398         int i_media_object_offset;
 399         int i_replicated_data_length;
 400         int i_payload_data_length;
 401         int i_payload_data_pos;
 402         int i_sub_payload_data_length;
 403         int i_tmp;
 404
 405         mtime_t i_pts;
 406         mtime_t i_pts_delta;
 407
 408         if( i_skip >= i_packet_size_left )
 409         {
 410             /* prevent some segfault with invalid file */
 411             break;
 412         }
 413
 414         i_stream_number = p_peek[i_skip] & 0x7f;
 415         i_skip++;
 416
 417         GETVALUE2b( i_packet_property >> 4, i_media_object_number, 0 );
 418         GETVALUE2b( i_packet_property >> 2, i_tmp, 0 );
 419         GETVALUE2b( i_packet_property, i_replicated_data_length, 0 );
 420
 421         if( i_replicated_data_length > 1 ) // should be at least 8 bytes
 422         {
 423             i_pts = (mtime_t)GetDWLE( p_peek + i_skip + 4 ) * 1000;
 424             i_skip += i_replicated_data_length;
 425             i_pts_delta = 0;
 426
 427             i_media_object_offset = i_tmp;
 428
 429             if( i_skip >= i_packet_size_left )
 430             {
 431                 break;
 432             }
 433         }
 434         else if( i_replicated_data_length == 1 )
 435         {
 436             /* msg_Dbg( p_demux, "found compressed payload" ); */
 437
 438             i_pts = (mtime_t)i_tmp * 1000;
 439             i_pts_delta = (mtime_t)p_peek[i_skip] * 1000; i_skip++;
 440
 441             i_media_object_offset = 0;
 442         }
 443         else
 444         {
 445             i_pts = (mtime_t)i_packet_send_time * 1000;
 446             i_pts_delta = 0;
 447
 448             i_media_object_offset = i_tmp;
 449         }
 450
 451         i_pts = __MAX( i_pts - p_sys->p_fp->i_preroll * 1000, 0 );
 452         if( b_packet_multiple_payload )
 453         {
 454             GETVALUE2b( i_payload_length_type, i_payload_data_length, 0 );
 455         }
 456         else
 457         {
 458             i_payload_data_length = i_packet_length -
 459                                         i_packet_padding_length - i_skip;
 460         }
 461
 462         if( i_payload_data_length < 0 || i_skip + i_payload_data_length > i_packet_size_left )
 463         {
 464             break;
 465         }
 466 #if 0
 467          msg_Dbg( p_demux,
 468                   "payload(%d/%d) stream_number:%d media_object_number:%d media_object_offset:%d replicated_data_length:%d payload_data_length %d",
 469                   i_payload + 1, i_payload_count, i_stream_number, i_media_object_number,
 470                   i_media_object_offset, i_replicated_data_length, i_payload_data_length );
 471 #endif
 472
 473         if( ( tk = p_sys->track[i_stream_number] ) == NULL )
 474         {
 475             msg_Warn( p_demux,
 476                       "undeclared stream[Id 0x%x]", i_stream_number );
 477             i_skip += i_payload_data_length;
 478             continue;   // over payload
 479         }
 480
 481         if( !tk->p_es )
 482         {
 483             i_skip += i_payload_data_length;
 484             continue;
 485         }
 486
 487
 488         for( i_payload_data_pos = 0;
 489              i_payload_data_pos < i_payload_data_length &&
 490                     i_packet_size_left > 0;
 491              i_payload_data_pos += i_sub_payload_data_length )
 492         {
 493             block_t *p_frag;
 494             int i_read;
 495
 496             // read sub payload length
 497             if( i_replicated_data_length == 1 )
 498             {
 499                 i_sub_payload_data_length = p_peek[i_skip]; i_skip++;
 500                 i_payload_data_pos++;
 501             }
 502             else
 503             {
 504                 i_sub_payload_data_length = i_payload_data_length;
 505             }
 506
 507             /* FIXME I don't use i_media_object_number, sould I ? */
 508             if( tk->p_frame && i_media_object_offset == 0 )
 509             {
 510                 /* send complete packet to decoder */
 511                 block_t *p_gather = block_ChainGather( tk->p_frame );
 512
 513                 es_out_Send( p_demux->out, tk->p_es, p_gather );
 514
 515                 tk->p_frame = NULL;
 516             }
 517
 518             i_read = i_sub_payload_data_length + i_skip;
 519             if( ( p_frag = stream_Block( p_demux->s, i_read ) ) == NULL )
 520             {
 521                 msg_Warn( p_demux, "cannot read data" );
 522                 return 0;
 523             }
 524             i_packet_size_left -= i_read;
 525
 526             p_frag->p_buffer += i_skip;
 527             p_frag->i_buffer -= i_skip;
 528
 529             if( tk->p_frame == NULL )
 530             {
 531                 tk->i_time =
 532                     ( (mtime_t)i_pts + i_payload * (mtime_t)i_pts_delta );
 533
 534                 p_frag->i_pts = tk->i_time;
 535
 536                 if( tk->i_cat != VIDEO_ES )
 537                     p_frag->i_dts = p_frag->i_pts;
 538                 else
 539                 {
 540                     p_frag->i_dts = p_frag->i_pts;
 541                     p_frag->i_pts = 0;
 542                 }
 543             }
 544
 545             block_ChainAppend( &tk->p_frame, p_frag );
 546
 547             i_skip = 0;
 548             if( i_packet_size_left > 0 )
 549             {
 550                 if( stream_Peek( p_demux->s, &p_peek, i_packet_size_left )
 551                                                          < i_packet_size_left )
 552                 {
 553                     msg_Warn( p_demux, "cannot peek, EOF ?" );
 554                     return 0;
 555                 }
 556             }
 557         }
 558     }
 559
 560     if( i_packet_size_left > 0 )
 561     {
 562         if( stream_Read( p_demux->s, NULL, i_packet_size_left )
 563                                                          < i_packet_size_left )
 564         {
 565             msg_Warn( p_demux, "cannot skip data, EOF ?" );
 566             return 0;
 567         }
 568     }
 569
 570     return 1;
 571
 572 loop_error_recovery:
 573     msg_Warn( p_demux, "unsupported packet header" );
 574     if( p_sys->p_fp->i_min_data_packet_size != p_sys->p_fp->i_max_data_packet_size )
 575     {
 576         msg_Err( p_demux, "unsupported packet header, fatal error" );
 577         return -1;
 578     }
 579     stream_Read( p_demux->s, NULL, i_data_packet_min );
 580
 581     return 1;
 582 }
 583
 584 /*****************************************************************************
 585  *
 586  *****************************************************************************/
 587 static int DemuxInit( demux_t *p_demux )
 588 {
 589     demux_sys_t *p_sys = p_demux->p_sys;
 590     vlc_bool_t  b_seekable;
 591     int         i;
 592
 593     unsigned int    i_stream;
 594     asf_object_content_description_t *p_cd;
 595
 596     /* init context */
 597     p_sys->i_time   = -1;
 598     p_sys->i_length = 0;
 599     p_sys->i_bitrate = 0;
 600     p_sys->p_root   = NULL;
 601     p_sys->p_fp     = NULL;
 602     p_sys->i_track  = 0;
 603     for( i = 0; i < 128; i++ )
 604     {
 605         p_sys->track[i] = NULL;
 606     }
 607     p_sys->i_data_begin = -1;
 608     p_sys->i_data_end   = -1;
 609     p_sys->meta         = NULL;
 610
 611     /* Now load all object ( except raw data ) */
 612     stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &b_seekable );
 613     if( (p_sys->p_root = ASF_ReadObjectRoot( p_demux->s, b_seekable )) == NULL )
 614     {
 615         msg_Warn( p_demux, "ASF plugin discarded (not a valid file)" );
 616         return VLC_EGENERIC;
 617     }
 618     p_sys->p_fp = p_sys->p_root->p_fp;
 619
 620     if( p_sys->p_fp->i_min_data_packet_size != p_sys->p_fp->i_max_data_packet_size )
 621     {
 622         msg_Warn( p_demux, "ASF plugin discarded (invalid file_properties object)" );
 623         goto error;
 624     }
 625
 626     p_sys->i_track = ASF_CountObject( p_sys->p_root->p_hdr,
 627                                       &asf_object_stream_properties_guid );
 628     if( p_sys->i_track <= 0 )
 629     {
 630         msg_Warn( p_demux, "ASF plugin discarded (cannot find any stream!)" );
 631         goto error;
 632     }
 633
 634     msg_Dbg( p_demux, "found %d streams", p_sys->i_track );
 635
 636     for( i_stream = 0; i_stream < p_sys->i_track; i_stream ++ )
 637     {
 638         asf_track_t    *tk;
 639         asf_object_stream_properties_t *p_sp;
 640
 641         p_sp = ASF_FindObject( p_sys->p_root->p_hdr,
 642                                &asf_object_stream_properties_guid,
 643                                i_stream );
 644
 645         tk = p_sys->track[p_sp->i_stream_number] = malloc( sizeof( asf_track_t ) );
 646         memset( tk, 0, sizeof( asf_track_t ) );
 647
 648         tk->i_time = -1;
 649         tk->p_sp = p_sp;
 650         tk->p_es = NULL;
 651         tk->p_frame = NULL;
 652
 653         if( ASF_CmpGUID( &p_sp->i_stream_type, &asf_object_stream_type_audio ) &&
 654             p_sp->i_type_specific_data_length >= sizeof( WAVEFORMATEX ) - 2 )
 655         {
 656             es_format_t fmt;
 657             uint8_t *p_data = p_sp->p_type_specific_data;
 658             int i_format;
 659
 660             es_format_Init( &fmt, AUDIO_ES, 0 );
 661             i_format = GetWLE( &p_data[0] );
 662             wf_tag_to_fourcc( i_format, &fmt.i_codec, NULL );
 663             fmt.audio.i_channels        = GetWLE(  &p_data[2] );
 664             fmt.audio.i_rate      = GetDWLE( &p_data[4] );
 665             fmt.i_bitrate         = GetDWLE( &p_data[8] ) * 8;
 666             fmt.audio.i_blockalign      = GetWLE(  &p_data[12] );
 667             fmt.audio.i_bitspersample   = GetWLE(  &p_data[14] );
 668
 669             if( p_sp->i_type_specific_data_length > sizeof( WAVEFORMATEX ) &&
 670                 i_format != WAVE_FORMAT_MPEGLAYER3 &&
 671                 i_format != WAVE_FORMAT_MPEG )
 672             {
 673                 fmt.i_extra = __MIN( GetWLE( &p_data[16] ),
 674                                      p_sp->i_type_specific_data_length -
 675                                      sizeof( WAVEFORMATEX ) );
 676                 fmt.p_extra = malloc( fmt.i_extra );
 677                 memcpy( fmt.p_extra, &p_data[sizeof( WAVEFORMATEX )],
 678                         fmt.i_extra );
 679             }
 680
 681             tk->i_cat = AUDIO_ES;
 682             tk->p_es = es_out_Add( p_demux->out, &fmt );
 683             es_format_Clean( &fmt );
 684
 685             msg_Dbg( p_demux, "added new audio stream(codec:0x%x,ID:%d)",
 686                     GetWLE( p_data ), p_sp->i_stream_number );
 687         }
 688         else if( ASF_CmpGUID( &p_sp->i_stream_type,
 689                               &asf_object_stream_type_video ) &&
 690                  p_sp->i_type_specific_data_length >= 11 +
 691                  sizeof( BITMAPINFOHEADER ) )
 692         {
 693             es_format_t  fmt;
 694             uint8_t      *p_data = &p_sp->p_type_specific_data[11];
 695
 696             es_format_Init( &fmt, VIDEO_ES,
 697                             VLC_FOURCC( p_data[16], p_data[17],
 698                                         p_data[18], p_data[19] ) );
 699             fmt.video.i_width = GetDWLE( p_data + 4 );
 700             fmt.video.i_height= GetDWLE( p_data + 8 );
 701
 702             if( p_sp->i_type_specific_data_length > 11 +
 703                 sizeof( BITMAPINFOHEADER ) )
 704             {
 705                 fmt.i_extra = __MIN( GetDWLE( p_data ),
 706                                      p_sp->i_type_specific_data_length - 11 -
 707                                      sizeof( BITMAPINFOHEADER ) );
 708                 fmt.p_extra = malloc( fmt.i_extra );
 709                 memcpy( fmt.p_extra, &p_data[sizeof( BITMAPINFOHEADER )],
 710                         fmt.i_extra );
 711             }
 712
 713             /* Look for an aspect ratio */
 714             if( p_sys->p_root->p_metadata )
 715             {
 716                 asf_object_metadata_t *p_meta = p_sys->p_root->p_metadata;
 717                 int i, i_aspect_x = 0, i_aspect_y = 0;
 718
 719                 for( i = 0; i < p_meta->i_record_entries_count; i++ )
 720                 {
 721                     if( !strcmp( p_meta->record[i].psz_name, "AspectRatioX" ) )
 722                     {
 723                         if( (!i_aspect_x && !p_meta->record[i].i_stream) ||
 724                             p_meta->record[i].i_stream ==
 725                             p_sp->i_stream_number )
 726                             i_aspect_x = p_meta->record[i].i_val;
 727                     }
 728                     if( !strcmp( p_meta->record[i].psz_name, "AspectRatioY" ) )
 729                     {
 730                         if( (!i_aspect_y && !p_meta->record[i].i_stream) ||
 731                             p_meta->record[i].i_stream ==
 732                             p_sp->i_stream_number )
 733                             i_aspect_y = p_meta->record[i].i_val;
 734                     }
 735                 }
 736
 737                 if( i_aspect_x && i_aspect_y )
 738                 {
 739                     fmt.video.i_aspect = i_aspect_x *
 740                         (int64_t)fmt.video.i_width * VOUT_ASPECT_FACTOR /
 741                         fmt.video.i_height / i_aspect_y;
 742                 }
 743             }
 744
 745             tk->i_cat = VIDEO_ES;
 746             tk->p_es = es_out_Add( p_demux->out, &fmt );
 747             es_format_Clean( &fmt );
 748
 749             msg_Dbg( p_demux, "added new video stream(ID:%d)",
 750                      p_sp->i_stream_number );
 751         }
 752         else
 753         {
 754             tk->i_cat = UNKNOWN_ES;
 755             msg_Dbg( p_demux, "ignoring unknown stream(ID:%d)",
 756                      p_sp->i_stream_number );
 757         }
 758     }
 759
 760     p_sys->i_data_begin = p_sys->p_root->p_data->i_object_pos + 50;
 761     if( p_sys->p_root->p_data->i_object_size != 0 )
 762     { /* local file */
 763         p_sys->i_data_end = p_sys->p_root->p_data->i_object_pos +
 764                                     p_sys->p_root->p_data->i_object_size;
 765     }
 766     else
 767     { /* live/broacast */
 768         p_sys->i_data_end = -1;
 769     }
 770
 771
 772     /* go to first packet */
 773     stream_Seek( p_demux->s, p_sys->i_data_begin );
 774
 775     /* try to calculate movie time */
 776     if( p_sys->p_fp->i_data_packets_count > 0 )
 777     {
 778         int64_t i_count;
 779         int64_t i_size = stream_Size( p_demux->s );
 780
 781         if( p_sys->i_data_end > 0 && i_size > p_sys->i_data_end )
 782         {
 783             i_size = p_sys->i_data_end;
 784         }
 785
 786         /* real number of packets */
 787         i_count = ( i_size - p_sys->i_data_begin ) /
 788                   p_sys->p_fp->i_min_data_packet_size;
 789
 790         /* calculate the time duration in micro-s */
 791         p_sys->i_length = (mtime_t)p_sys->p_fp->i_play_duration / 10 *
 792                    (mtime_t)i_count /
 793                    (mtime_t)p_sys->p_fp->i_data_packets_count;
 794
 795         if( p_sys->i_length > 0 )
 796         {
 797             p_sys->i_bitrate = 8 * i_size * (int64_t)1000000 / p_sys->i_length;
 798         }
 799     }
 800
 801     /* Create meta information */
 802     p_sys->meta = vlc_meta_New();
 803
 804     if( ( p_cd = ASF_FindObject( p_sys->p_root->p_hdr,
 805                                  &asf_object_content_description_guid, 0 ) ) )
 806     {
 807         if( p_cd->psz_title && *p_cd->psz_title )
 808         {
 809             vlc_meta_Add( p_sys->meta, VLC_META_TITLE, p_cd->psz_title );
 810         }
 811         if( p_cd->psz_author && *p_cd->psz_author )
 812         {
 813              vlc_meta_Add( p_sys->meta, VLC_META_AUTHOR, p_cd->psz_author );
 814         }
 815         if( p_cd->psz_copyright && *p_cd->psz_copyright )
 816         {
 817             vlc_meta_Add( p_sys->meta, VLC_META_COPYRIGHT, p_cd->psz_copyright );
 818         }
 819         if( p_cd->psz_description && *p_cd->psz_description )
 820         {
 821             vlc_meta_Add( p_sys->meta, VLC_META_DESCRIPTION, p_cd->psz_description );
 822         }
 823         if( p_cd->psz_rating && *p_cd->psz_rating )
 824         {
 825             vlc_meta_Add( p_sys->meta, VLC_META_RATING, p_cd->psz_rating );
 826         }
 827     }
 828     for( i_stream = 0, i = 0; i < 128; i++ )
 829     {
 830         asf_object_codec_list_t *p_cl = ASF_FindObject( p_sys->p_root->p_hdr,
 831                                                         &asf_object_codec_list_guid, 0 );
 832
 833         if( p_sys->track[i] )
 834         {
 835             vlc_meta_t *tk = vlc_meta_New();
 836             TAB_APPEND( p_sys->meta->i_track, p_sys->meta->track, tk );
 837
 838             if( p_cl && i_stream < p_cl->i_codec_entries_count )
 839             {
 840                 if( p_cl->codec[i_stream].psz_name &&
 841                     *p_cl->codec[i_stream].psz_name )
 842                 {
 843                     vlc_meta_Add( tk, VLC_META_CODEC_NAME,
 844                                   p_cl->codec[i_stream].psz_name );
 845                 }
 846                 if( p_cl->codec[i_stream].psz_description &&
 847                     *p_cl->codec[i_stream].psz_description )
 848                 {
 849                     vlc_meta_Add( tk, VLC_META_CODEC_DESCRIPTION,
 850                                   p_cl->codec[i_stream].psz_description );
 851                 }
 852             }
 853             i_stream++;
 854         }
 855     }
 856
 857     es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 858     return VLC_SUCCESS;
 859
 860 error:
 861     ASF_FreeObjectRoot( p_demux->s, p_sys->p_root );
 862     return VLC_EGENERIC;
 863 }
 864 /*****************************************************************************
 865  *
 866  *****************************************************************************/
 867 static void DemuxEnd( demux_t *p_demux )
 868 {
 869     demux_sys_t *p_sys = p_demux->p_sys;
 870     int         i;
 871
 872     if( p_sys->p_root )
 873     {
 874         ASF_FreeObjectRoot( p_demux->s, p_sys->p_root );
 875         p_sys->p_root = NULL;
 876     }
 877     if( p_sys->meta )
 878     {
 879         vlc_meta_Delete( p_sys->meta );
 880         p_sys->meta = NULL;
 881     }
 882
 883     for( i = 0; i < 128; i++ )
 884     {
 885         asf_track_t *tk = p_sys->track[i];
 886
 887         if( tk )
 888         {
 889             if( tk->p_frame )
 890             {
 891                 block_ChainRelease( tk->p_frame );
 892             }
 893             if( tk->p_es )
 894             {
 895                 es_out_Del( p_demux->out, tk->p_es );
 896             }
 897             free( tk );
 898         }
 899         p_sys->track[i] = 0;
 900     }
 901 }
 902