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

   1 /*****************************************************************************
   2  * asf.c : ASF demux module
   3  *****************************************************************************
   4  * Copyright (C) 2002-2003 the VideoLAN team
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc_demux.h>
  34 #include <vlc_interface.h>
  35
  36 #include <vlc_meta.h>
  37 #include <vlc_access.h>                /* GET_PRIVATE_ID_STATE */
  38 #include <vlc_codecs.h>                /* BITMAPINFOHEADER, WAVEFORMATEX */
  39 #include "libasf.h"
  40
  41 /* TODO
  42  *  - add support for the newly added object: language, bitrate,
  43  *                                            extended stream properties.
  44  */
  45
  46 /*****************************************************************************
  47  * Module descriptor
  48  *****************************************************************************/
  49 static int  Open  ( vlc_object_t * );
  50 static void Close ( vlc_object_t * );
  51
  52 vlc_module_begin();
  53     set_category( CAT_INPUT );
  54     set_subcategory( SUBCAT_INPUT_DEMUX );
  55     set_description( _("ASF v1.0 demuxer") );
  56     set_capability( "demux2", 200 );
  57     set_callbacks( Open, Close );
  58     add_shortcut( "asf" );
  59 vlc_module_end();
  60
  61
  62 /*****************************************************************************
  63  * Local prototypes
  64  *****************************************************************************/
  65 static int Demux  ( demux_t * );
  66 static int Control( demux_t *, int i_query, va_list args );
  67
  68 typedef struct
  69 {
  70     int i_cat;
  71
  72     es_out_id_t     *p_es;
  73
  74     asf_object_stream_properties_t *p_sp;
  75
  76     mtime_t i_time;
  77
  78     block_t         *p_frame; /* use to gather complete frame */
  79
  80 } asf_track_t;
  81
  82 struct demux_sys_t
  83 {
  84     mtime_t             i_time;     /* s */
  85     mtime_t             i_length;   /* length of file file */
  86     int64_t             i_bitrate;  /* global file bitrate */
  87
  88     asf_object_root_t            *p_root;
  89     asf_object_file_properties_t *p_fp;
  90
  91     unsigned int        i_track;
  92     asf_track_t         *track[128]; /* track number is stored on 7 bits */
  93
  94     int64_t             i_data_begin;
  95     int64_t             i_data_end;
  96
  97     vlc_bool_t          b_index;
  98     vlc_meta_t          *meta;
  99 };
 100
 101 static mtime_t  GetMoviePTS( demux_sys_t * );
 102 static int      DemuxInit( demux_t * );
 103 static void     DemuxEnd( demux_t * );
 104 static int      DemuxPacket( demux_t * );
 105
 106 /*****************************************************************************
 107  * Open: check file and initializes ASF structures
 108  *****************************************************************************/
 109 static int Open( vlc_object_t * p_this )
 110 {
 111     demux_t     *p_demux = (demux_t *)p_this;
 112     demux_sys_t *p_sys;
 113     guid_t      guid;
 114     const uint8_t     *p_peek;
 115
 116     /* A little test to see if it could be a asf stream */
 117     if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 ) return VLC_EGENERIC;
 118
 119     ASF_GetGUID( &guid, p_peek );
 120     if( !ASF_CmpGUID( &guid, &asf_object_header_guid ) ) return VLC_EGENERIC;
 121
 122     /* Set p_demux fields */
 123     p_demux->pf_demux = Demux;
 124     p_demux->pf_control = Control;
 125     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 126     memset( p_sys, 0, sizeof( demux_sys_t ) );
 127
 128     /* Load the headers */
 129     if( DemuxInit( p_demux ) )
 130     {
 131         free( p_sys );
 132         return VLC_EGENERIC;
 133     }
 134     return VLC_SUCCESS;
 135 }
 136
 137
 138 /*****************************************************************************
 139  * Demux: read packet and send them to decoders
 140  *****************************************************************************/
 141 static int Demux( demux_t *p_demux )
 142 {
 143     demux_sys_t *p_sys = p_demux->p_sys;
 144
 145     for( ;; )
 146     {
 147         const uint8_t *p_peek;
 148         mtime_t i_length;
 149         mtime_t i_time_begin = GetMoviePTS( p_sys );
 150         int i_result;
 151
 152         if( p_demux->b_die )
 153             break;
 154 #if 0
 155         /* FIXME: returns EOF too early for some mms streams */
 156         if( p_sys->i_data_end >= 0 &&
 157                 stream_Tell( p_demux->s ) >= p_sys->i_data_end )
 158             return 0; /* EOF */
 159 #endif
 160
 161         /* Check if we have concatenated files */
 162         if( stream_Peek( p_demux->s, &p_peek, 16 ) == 16 )
 163         {
 164             guid_t guid;
 165
 166             ASF_GetGUID( &guid, p_peek );
 167             if( ASF_CmpGUID( &guid, &asf_object_header_guid ) )
 168             {
 169                 msg_Warn( p_demux, "found a new ASF header" );
 170                 /* We end this stream */
 171                 DemuxEnd( p_demux );
 172
 173                 /* And we prepare to read the next one */
 174                 if( DemuxInit( p_demux ) )
 175                 {
 176                     msg_Err( p_demux, "failed to load the new header" );
 177                     intf_UserFatal( p_demux, VLC_FALSE, _("Could not demux ASF stream"),
 178                                     _("VLC failed to load the ASF header.") );
 179                     return 0;
 180                 }
 181                 continue;
 182             }
 183         }
 184
 185         /* Read and demux a packet */
 186         if( ( i_result = DemuxPacket( p_demux ) ) <= 0 )
 187         {
 188             return i_result;
 189         }
 190         if( i_time_begin == -1 )
 191         {
 192             i_time_begin = GetMoviePTS( p_sys );
 193         }
 194         else
 195         {
 196             i_length = GetMoviePTS( p_sys ) - i_time_begin;
 197             if( i_length < 0 || i_length >= 40 * 1000 ) break;
 198         }
 199     }
 200
 201     /* Set the PCR */
 202     p_sys->i_time = GetMoviePTS( p_sys );
 203     if( p_sys->i_time >= 0 )
 204     {
 205         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time );
 206     }
 207
 208     return 1;
 209 }
 210
 211 /*****************************************************************************
 212  * Close: frees unused data
 213  *****************************************************************************/
 214 static void Close( vlc_object_t * p_this )
 215 {
 216     demux_t     *p_demux = (demux_t *)p_this;
 217
 218     DemuxEnd( p_demux );
 219
 220     free( p_demux->p_sys );
 221 }
 222
 223 /*****************************************************************************
 224  * SeekIndex: goto to i_date or i_percent
 225  *****************************************************************************/
 226 static int SeekIndex( demux_t *p_demux, mtime_t i_date, float f_pos )
 227 {
 228     demux_sys_t *p_sys = p_demux->p_sys;
 229     asf_object_index_t *p_index;
 230     int64_t i_pos;
 231
 232     msg_Dbg( p_demux, "seek with index: %i seconds, position %f",
 233              (int)(i_date/1000000), f_pos );
 234
 235     p_index = ASF_FindObject( p_sys->p_root, &asf_object_index_guid, 0 );
 236
 237     if( i_date < 0 ) i_date = p_sys->i_length * f_pos;
 238
 239     i_pos = i_date * 10 / p_index->i_index_entry_time_interval;
 240     i_pos = p_index->index_entry[i_pos].i_packet_number *
 241         p_sys->p_fp->i_min_data_packet_size;
 242
 243     return stream_Seek( p_demux->s, p_sys->i_data_begin + i_pos );
 244 }
 245
 246 /*****************************************************************************
 247  * Control:
 248  *****************************************************************************/
 249 static int Control( demux_t *p_demux, int i_query, va_list args )
 250 {
 251     demux_sys_t *p_sys = p_demux->p_sys;
 252     vlc_meta_t  *p_meta;
 253     int64_t     i64, *pi64;
 254     double      f, *pf;
 255     int         i;
 256
 257     switch( i_query )
 258     {
 259     case DEMUX_GET_LENGTH:
 260         pi64 = (int64_t*)va_arg( args, int64_t * );
 261         *pi64 = p_sys->i_length;
 262         return VLC_SUCCESS;
 263
 264     case DEMUX_GET_TIME:
 265         pi64 = (int64_t*)va_arg( args, int64_t * );
 266         if( p_sys->i_time < 0 ) return VLC_EGENERIC;
 267         *pi64 = p_sys->i_time;
 268         return VLC_SUCCESS;
 269
 270     case DEMUX_SET_TIME:
 271         p_sys->i_time = -1;
 272         for( i = 0; i < 128 ; i++ )
 273             if( p_sys->track[i] ) p_sys->track[i]->i_time = -1;
 274
 275         if( p_sys->b_index && p_sys->i_length > 0 )
 276         {
 277             i64 = (int64_t)va_arg( args, int64_t );
 278             return SeekIndex( p_demux, i64, -1 );
 279         }
 280         else
 281         {
 282             return demux2_vaControlHelper( p_demux->s, p_sys->i_data_begin,
 283                                            p_sys->i_data_end, p_sys->i_bitrate,
 284                                            p_sys->p_fp->i_min_data_packet_size,
 285                                            i_query, args );
 286         }
 287
 288     case DEMUX_GET_POSITION:
 289         if( p_sys->i_time < 0 ) return VLC_EGENERIC;
 290         if( p_sys->i_length > 0 )
 291         {
 292             pf = (double*)va_arg( args, double * );
 293             *pf = p_sys->i_time / (double)p_sys->i_length;
 294             return VLC_SUCCESS;
 295         }
 296         return demux2_vaControlHelper( p_demux->s, p_sys->i_data_begin,
 297                                        p_sys->i_data_end, p_sys->i_bitrate,
 298                                        p_sys->p_fp->i_min_data_packet_size,
 299                                        i_query, args );
 300
 301     case DEMUX_SET_POSITION:
 302         p_sys->i_time = -1;
 303         for( i = 0; i < 128 ; i++ )
 304             if( p_sys->track[i] ) p_sys->track[i]->i_time = -1;
 305
 306         if( p_sys->b_index && p_sys->i_length > 0 )
 307         {
 308             f = (double)va_arg( args, double );
 309             return SeekIndex( p_demux, -1, f );
 310         }
 311         else
 312         {
 313             return demux2_vaControlHelper( p_demux->s, p_sys->i_data_begin,
 314                                            p_sys->i_data_end, p_sys->i_bitrate,
 315                                            p_sys->p_fp->i_min_data_packet_size,
 316                                            i_query, args );
 317         }
 318
 319     case DEMUX_GET_META:
 320         p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
 321         vlc_meta_Merge( p_meta, p_sys->meta );
 322         return VLC_SUCCESS;
 323
 324     default:
 325         return demux2_vaControlHelper( p_demux->s, p_sys->i_data_begin,
 326                                        p_sys->i_data_end, p_sys->i_bitrate,
 327                                        p_sys->p_fp->i_min_data_packet_size,
 328                                        i_query, args );
 329     }
 330 }
 331
 332 /*****************************************************************************
 333  *
 334  *****************************************************************************/
 335 static mtime_t GetMoviePTS( demux_sys_t *p_sys )
 336 {
 337     mtime_t i_time = -1;
 338     int     i;
 339
 340     for( i = 0; i < 128 ; i++ )
 341     {
 342         asf_track_t *tk = p_sys->track[i];
 343
 344         if( tk && tk->p_es && tk->i_time > 0)
 345         {
 346             if( i_time < 0 ) i_time = tk->i_time;
 347             else i_time = __MIN( i_time, tk->i_time );
 348         }
 349     }
 350
 351     return i_time;
 352 }
 353
 354 #define GETVALUE2b( bits, var, def ) \
 355     switch( (bits)&0x03 ) \
 356     { \
 357         case 1: var = p_peek[i_skip]; i_skip++; break; \
 358         case 2: var = GetWLE( p_peek + i_skip );  i_skip+= 2; break; \
 359         case 3: var = GetDWLE( p_peek + i_skip ); i_skip+= 4; break; \
 360         case 0: \
 361         default: var = def; break;\
 362     }
 363
 364 static int DemuxPacket( demux_t *p_demux )
 365 {
 366     demux_sys_t *p_sys = p_demux->p_sys;
 367     int         i_data_packet_min = p_sys->p_fp->i_min_data_packet_size;
 368     const uint8_t *p_peek;
 369     int         i_skip;
 370
 371     int         i_packet_size_left;
 372     int         i_packet_flags;
 373     int         i_packet_property;
 374
 375     int         b_packet_multiple_payload;
 376     int         i_packet_length;
 377     int         i_packet_sequence;
 378     int         i_packet_padding_length;
 379
 380     uint32_t    i_packet_send_time;
 381     uint16_t    i_packet_duration;
 382     int         i_payload;
 383     int         i_payload_count;
 384     int         i_payload_length_type;
 385
 386
 387     if( stream_Peek( p_demux->s, &p_peek,i_data_packet_min)<i_data_packet_min )
 388     {
 389         msg_Warn( p_demux, "cannot peek while getting new packet, EOF ?" );
 390         return 0;
 391     }
 392     i_skip = 0;
 393
 394     /* *** parse error correction if present *** */
 395     if( p_peek[0]&0x80 )
 396     {
 397         unsigned int i_error_correction_length_type;
 398         unsigned int i_error_correction_data_length;
 399         unsigned int i_opaque_data_present;
 400
 401         i_error_correction_data_length = p_peek[0] & 0x0f;  // 4bits
 402         i_opaque_data_present = ( p_peek[0] >> 4 )& 0x01;    // 1bit
 403         i_error_correction_length_type = ( p_peek[0] >> 5 ) & 0x03; // 2bits
 404         i_skip += 1; // skip error correction flags
 405
 406         if( i_error_correction_length_type != 0x00 ||
 407             i_opaque_data_present != 0 ||
 408             i_error_correction_data_length != 0x02 )
 409         {
 410             goto loop_error_recovery;
 411         }
 412
 413         i_skip += i_error_correction_data_length;
 414     }
 415     else
 416     {
 417         msg_Warn( p_demux, "p_peek[0]&0x80 != 0x80" );
 418     }
 419
 420     /* sanity check */
 421     if( i_skip + 2 >= i_data_packet_min )
 422     {
 423         goto loop_error_recovery;
 424     }
 425
 426     i_packet_flags = p_peek[i_skip]; i_skip++;
 427     i_packet_property = p_peek[i_skip]; i_skip++;
 428
 429     b_packet_multiple_payload = i_packet_flags&0x01;
 430
 431     /* read some value */
 432     GETVALUE2b( i_packet_flags >> 5, i_packet_length, i_data_packet_min );
 433     GETVALUE2b( i_packet_flags >> 1, i_packet_sequence, 0 );
 434     GETVALUE2b( i_packet_flags >> 3, i_packet_padding_length, 0 );
 435
 436     if( i_packet_padding_length > i_packet_length )
 437     {
 438         msg_Warn( p_demux, "Too large padding: %d", i_packet_padding_length );
 439         goto loop_error_recovery;
 440     }
 441
 442     i_packet_send_time = GetDWLE( p_peek + i_skip ); i_skip += 4;
 443     i_packet_duration  = GetWLE( p_peek + i_skip ); i_skip += 2;
 444
 445     /* FIXME I have to do that for some file, I don't known why */
 446     i_packet_size_left = i_data_packet_min /*i_packet_length*/ ;
 447
 448     if( b_packet_multiple_payload )
 449     {
 450         i_payload_count = p_peek[i_skip] & 0x3f;
 451         i_payload_length_type = ( p_peek[i_skip] >> 6 )&0x03;
 452         i_skip++;
 453     }
 454     else
 455     {
 456         i_payload_count = 1;
 457         i_payload_length_type = 0x02; // unused
 458     }
 459
 460     for( i_payload = 0; i_payload < i_payload_count ; i_payload++ )
 461     {
 462         asf_track_t   *tk;
 463
 464         int i_packet_keyframe;
 465         int i_stream_number;
 466         int i_media_object_number;
 467         int i_media_object_offset;
 468         int i_replicated_data_length;
 469         int i_payload_data_length;
 470         int i_payload_data_pos;
 471         int i_sub_payload_data_length;
 472         int i_tmp;
 473
 474         mtime_t i_pts;
 475         mtime_t i_pts_delta;
 476
 477         if( i_skip >= i_packet_size_left )
 478         {
 479             /* prevent some segfault with invalid file */
 480             break;
 481         }
 482
 483         i_packet_keyframe = p_peek[i_skip] >> 7;
 484         i_stream_number = p_peek[i_skip++] & 0x7f;
 485
 486         GETVALUE2b( i_packet_property >> 4, i_media_object_number, 0 );
 487         GETVALUE2b( i_packet_property >> 2, i_tmp, 0 );
 488         GETVALUE2b( i_packet_property, i_replicated_data_length, 0 );
 489
 490         if( i_replicated_data_length > 1 ) // should be at least 8 bytes
 491         {
 492             i_pts = (mtime_t)GetDWLE( p_peek + i_skip + 4 ) * 1000;
 493             i_skip += i_replicated_data_length;
 494             i_pts_delta = 0;
 495
 496             i_media_object_offset = i_tmp;
 497
 498             if( i_skip >= i_packet_size_left )
 499             {
 500                 break;
 501             }
 502         }
 503         else if( i_replicated_data_length == 1 )
 504         {
 505             /* msg_Dbg( p_demux, "found compressed payload" ); */
 506
 507             i_pts = (mtime_t)i_tmp * 1000;
 508             i_pts_delta = (mtime_t)p_peek[i_skip] * 1000; i_skip++;
 509
 510             i_media_object_offset = 0;
 511         }
 512         else
 513         {
 514             i_pts = (mtime_t)i_packet_send_time * 1000;
 515             i_pts_delta = 0;
 516
 517             i_media_object_offset = i_tmp;
 518         }
 519
 520         i_pts = __MAX( i_pts - p_sys->p_fp->i_preroll * 1000, 0 );
 521         if( b_packet_multiple_payload )
 522         {
 523             GETVALUE2b( i_payload_length_type, i_payload_data_length, 0 );
 524         }
 525         else
 526         {
 527             i_payload_data_length = i_packet_length -
 528                                     i_packet_padding_length - i_skip;
 529         }
 530
 531         if( i_payload_data_length < 0 || i_payload_data_length > i_packet_size_left )
 532         {
 533             break;
 534         }
 535 #if 0
 536          msg_Dbg( p_demux,
 537                   "payload(%d/%d) stream_number:%d media_object_number:%d media_object_offset:%d replicated_data_length:%d payload_data_length %d",
 538                   i_payload + 1, i_payload_count, i_stream_number, i_media_object_number,
 539                   i_media_object_offset, i_replicated_data_length, i_payload_data_length );
 540 #endif
 541
 542         if( ( tk = p_sys->track[i_stream_number] ) == NULL )
 543         {
 544             msg_Warn( p_demux,
 545                       "undeclared stream[Id 0x%x]", i_stream_number );
 546             i_skip += i_payload_data_length;
 547             continue;   // over payload
 548         }
 549
 550         if( !tk->p_es )
 551         {
 552             i_skip += i_payload_data_length;
 553             continue;
 554         }
 555
 556
 557         for( i_payload_data_pos = 0;
 558              i_payload_data_pos < i_payload_data_length &&
 559                     i_packet_size_left > 0;
 560              i_payload_data_pos += i_sub_payload_data_length )
 561         {
 562             block_t *p_frag;
 563             int i_read;
 564
 565             // read sub payload length
 566             if( i_replicated_data_length == 1 )
 567             {
 568                 i_sub_payload_data_length = p_peek[i_skip]; i_skip++;
 569                 i_payload_data_pos++;
 570             }
 571             else
 572             {
 573                 i_sub_payload_data_length = i_payload_data_length;
 574             }
 575
 576             /* FIXME I don't use i_media_object_number, sould I ? */
 577             if( tk->p_frame && i_media_object_offset == 0 )
 578             {
 579                 /* send complete packet to decoder */
 580                 block_t *p_gather = block_ChainGather( tk->p_frame );
 581
 582                 es_out_Send( p_demux->out, tk->p_es, p_gather );
 583
 584                 tk->p_frame = NULL;
 585             }
 586
 587             i_read = i_sub_payload_data_length + i_skip;
 588             if( ( p_frag = stream_Block( p_demux->s, i_read ) ) == NULL )
 589             {
 590                 msg_Warn( p_demux, "cannot read data" );
 591                 return 0;
 592             }
 593             i_packet_size_left -= i_read;
 594
 595             p_frag->p_buffer += i_skip;
 596             p_frag->i_buffer -= i_skip;
 597
 598             if( tk->p_frame == NULL )
 599             {
 600                 tk->i_time =
 601                     ( (mtime_t)i_pts + i_payload * (mtime_t)i_pts_delta );
 602
 603                 p_frag->i_pts = tk->i_time;
 604
 605                 if( tk->i_cat != VIDEO_ES )
 606                     p_frag->i_dts = p_frag->i_pts;
 607                 else
 608                 {
 609                     p_frag->i_dts = p_frag->i_pts;
 610                     p_frag->i_pts = 0;
 611                 }
 612             }
 613
 614             block_ChainAppend( &tk->p_frame, p_frag );
 615
 616             i_skip = 0;
 617             if( i_packet_size_left > 0 )
 618             {
 619                 if( stream_Peek( p_demux->s, &p_peek, i_packet_size_left )
 620                                                          < i_packet_size_left )
 621                 {
 622                     msg_Warn( p_demux, "cannot peek, EOF ?" );
 623                     return 0;
 624                 }
 625             }
 626         }
 627     }
 628
 629     if( i_packet_size_left > 0 )
 630     {
 631         if( i_packet_size_left > i_packet_padding_length )
 632             msg_Warn( p_demux, "Didn't read %d bytes in the packet",
 633                             i_packet_size_left - i_packet_padding_length );
 634         else if( i_packet_size_left < i_packet_padding_length )
 635             msg_Warn( p_demux, "Read %d too much bytes in the packet",
 636                             i_packet_padding_length - i_packet_size_left );
 637
 638         if( stream_Read( p_demux->s, NULL, i_packet_size_left )
 639                                                          < i_packet_size_left )
 640         {
 641             msg_Err( p_demux, "cannot skip data, EOF ?" );
 642             return 0;
 643         }
 644     }
 645
 646     return 1;
 647
 648 loop_error_recovery:
 649     msg_Warn( p_demux, "unsupported packet header" );
 650     if( p_sys->p_fp->i_min_data_packet_size != p_sys->p_fp->i_max_data_packet_size )
 651     {
 652         msg_Err( p_demux, "unsupported packet header, fatal error" );
 653         return -1;
 654     }
 655     stream_Read( p_demux->s, NULL, i_data_packet_min );
 656
 657     return 1;
 658 }
 659
 660 /*****************************************************************************
 661  *
 662  *****************************************************************************/
 663 static int DemuxInit( demux_t *p_demux )
 664 {
 665     demux_sys_t *p_sys = p_demux->p_sys;
 666     vlc_bool_t b_seekable;
 667     unsigned int i_stream, i;
 668     asf_object_content_description_t *p_cd;
 669     asf_object_index_t *p_index;
 670     vlc_bool_t b_index;
 671
 672     /* init context */
 673     p_sys->i_time   = -1;
 674     p_sys->i_length = 0;
 675     p_sys->i_bitrate = 0;
 676     p_sys->p_root   = NULL;
 677     p_sys->p_fp     = NULL;
 678     p_sys->b_index  = 0;
 679     p_sys->i_track  = 0;
 680     for( i = 0; i < 128; i++ )
 681     {
 682         p_sys->track[i] = NULL;
 683     }
 684     p_sys->i_data_begin = -1;
 685     p_sys->i_data_end   = -1;
 686     p_sys->meta         = NULL;
 687
 688     /* Now load all object ( except raw data ) */
 689     stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &b_seekable );
 690     if( !(p_sys->p_root = ASF_ReadObjectRoot(p_demux->s, b_seekable)) )
 691     {
 692         msg_Warn( p_demux, "ASF plugin discarded (not a valid file)" );
 693         return VLC_EGENERIC;
 694     }
 695     p_sys->p_fp = p_sys->p_root->p_fp;
 696
 697     if( p_sys->p_fp->i_min_data_packet_size != p_sys->p_fp->i_max_data_packet_size )
 698     {
 699         msg_Warn( p_demux, "ASF plugin discarded (invalid file_properties object)" );
 700         goto error;
 701     }
 702
 703     p_sys->i_track = ASF_CountObject( p_sys->p_root->p_hdr,
 704                                       &asf_object_stream_properties_guid );
 705     if( p_sys->i_track <= 0 )
 706     {
 707         msg_Warn( p_demux, "ASF plugin discarded (cannot find any stream!)" );
 708         goto error;
 709     }
 710
 711     /* check if index is available */
 712     p_index = ASF_FindObject( p_sys->p_root, &asf_object_index_guid, 0 );
 713     b_index = p_index && p_index->i_index_entry_count;
 714
 715     msg_Dbg( p_demux, "found %d streams", p_sys->i_track );
 716
 717     for( i_stream = 0; i_stream < p_sys->i_track; i_stream ++ )
 718     {
 719         asf_track_t    *tk;
 720         asf_object_stream_properties_t *p_sp;
 721         vlc_bool_t b_access_selected;
 722
 723         p_sp = ASF_FindObject( p_sys->p_root->p_hdr,
 724                                &asf_object_stream_properties_guid,
 725                                i_stream );
 726
 727         tk = p_sys->track[p_sp->i_stream_number] = malloc( sizeof( asf_track_t ) );
 728         memset( tk, 0, sizeof( asf_track_t ) );
 729
 730         tk->i_time = -1;
 731         tk->p_sp = p_sp;
 732         tk->p_es = NULL;
 733         tk->p_frame = NULL;
 734
 735         /* Check (in case of mms) if this track is selected (ie will receive data) */
 736         if( !stream_Control( p_demux->s, STREAM_CONTROL_ACCESS, ACCESS_GET_PRIVATE_ID_STATE,
 737                              p_sp->i_stream_number, &b_access_selected ) &&
 738             !b_access_selected )
 739         {
 740             tk->i_cat = UNKNOWN_ES;
 741             msg_Dbg( p_demux, "ignoring not selected stream(ID:%d) (by access)",
 742                      p_sp->i_stream_number );
 743             continue;
 744         }
 745
 746         if( ASF_CmpGUID( &p_sp->i_stream_type, &asf_object_stream_type_audio ) &&
 747             p_sp->i_type_specific_data_length >= sizeof( WAVEFORMATEX ) - 2 )
 748         {
 749             es_format_t fmt;
 750             uint8_t *p_data = p_sp->p_type_specific_data;
 751             int i_format;
 752
 753             es_format_Init( &fmt, AUDIO_ES, 0 );
 754             i_format = GetWLE( &p_data[0] );
 755             wf_tag_to_fourcc( i_format, &fmt.i_codec, NULL );
 756             fmt.audio.i_channels        = GetWLE(  &p_data[2] );
 757             fmt.audio.i_rate      = GetDWLE( &p_data[4] );
 758             fmt.i_bitrate         = GetDWLE( &p_data[8] ) * 8;
 759             fmt.audio.i_blockalign      = GetWLE(  &p_data[12] );
 760             fmt.audio.i_bitspersample   = GetWLE(  &p_data[14] );
 761
 762             if( p_sp->i_type_specific_data_length > sizeof( WAVEFORMATEX ) &&
 763                 i_format != WAVE_FORMAT_MPEGLAYER3 &&
 764                 i_format != WAVE_FORMAT_MPEG )
 765             {
 766                 fmt.i_extra = __MIN( GetWLE( &p_data[16] ),
 767                                      p_sp->i_type_specific_data_length -
 768                                      sizeof( WAVEFORMATEX ) );
 769                 fmt.p_extra = malloc( fmt.i_extra );
 770                 memcpy( fmt.p_extra, &p_data[sizeof( WAVEFORMATEX )],
 771                         fmt.i_extra );
 772             }
 773
 774             tk->i_cat = AUDIO_ES;
 775             tk->p_es = es_out_Add( p_demux->out, &fmt );
 776             es_format_Clean( &fmt );
 777
 778             msg_Dbg( p_demux, "added new audio stream(codec:0x%x,ID:%d)",
 779                     GetWLE( p_data ), p_sp->i_stream_number );
 780         }
 781         else if( ASF_CmpGUID( &p_sp->i_stream_type,
 782                               &asf_object_stream_type_video ) &&
 783                  p_sp->i_type_specific_data_length >= 11 +
 784                  sizeof( BITMAPINFOHEADER ) )
 785         {
 786             es_format_t  fmt;
 787             uint8_t      *p_data = &p_sp->p_type_specific_data[11];
 788
 789             es_format_Init( &fmt, VIDEO_ES,
 790                             VLC_FOURCC( p_data[16], p_data[17],
 791                                         p_data[18], p_data[19] ) );
 792             fmt.video.i_width = GetDWLE( p_data + 4 );
 793             fmt.video.i_height= GetDWLE( p_data + 8 );
 794
 795
 796             if( fmt.i_codec == VLC_FOURCC( 'D','V','R',' ') )
 797             {
 798                 /* DVR-MS special ASF */
 799                 fmt.i_codec = VLC_FOURCC( 'm','p','g','2' ) ;
 800                 fmt.b_packetized = VLC_FALSE;
 801             }
 802
 803             if( p_sp->i_type_specific_data_length > 11 +
 804                 sizeof( BITMAPINFOHEADER ) )
 805             {
 806                 fmt.i_extra = __MIN( GetDWLE( p_data ),
 807                                      p_sp->i_type_specific_data_length - 11 -
 808                                      sizeof( BITMAPINFOHEADER ) );
 809                 fmt.p_extra = malloc( fmt.i_extra );
 810                 memcpy( fmt.p_extra, &p_data[sizeof( BITMAPINFOHEADER )],
 811                         fmt.i_extra );
 812             }
 813
 814             /* Look for an aspect ratio */
 815             if( p_sys->p_root->p_metadata )
 816             {
 817                 asf_object_metadata_t *p_meta = p_sys->p_root->p_metadata;
 818                 int i_aspect_x = 0, i_aspect_y = 0;
 819                 unsigned int i;
 820
 821                 for( i = 0; i < p_meta->i_record_entries_count; i++ )
 822                 {
 823                     if( !strcmp( p_meta->record[i].psz_name, "AspectRatioX" ) )
 824                     {
 825                         if( (!i_aspect_x && !p_meta->record[i].i_stream) ||
 826                             p_meta->record[i].i_stream ==
 827                             p_sp->i_stream_number )
 828                             i_aspect_x = p_meta->record[i].i_val;
 829                     }
 830                     if( !strcmp( p_meta->record[i].psz_name, "AspectRatioY" ) )
 831                     {
 832                         if( (!i_aspect_y && !p_meta->record[i].i_stream) ||
 833                             p_meta->record[i].i_stream ==
 834                             p_sp->i_stream_number )
 835                             i_aspect_y = p_meta->record[i].i_val;
 836                     }
 837                 }
 838
 839                 if( i_aspect_x && i_aspect_y )
 840                 {
 841                     fmt.video.i_aspect = i_aspect_x *
 842                         (int64_t)fmt.video.i_width * VOUT_ASPECT_FACTOR /
 843                         fmt.video.i_height / i_aspect_y;
 844                 }
 845         }
 846
 847             tk->i_cat = VIDEO_ES;
 848             tk->p_es = es_out_Add( p_demux->out, &fmt );
 849             es_format_Clean( &fmt );
 850
 851             /* If there is a video track then use the index for seeking */
 852             p_sys->b_index = b_index;
 853
 854             msg_Dbg( p_demux, "added new video stream(ID:%d)",
 855                      p_sp->i_stream_number );
 856         }
 857         else if( ASF_CmpGUID( &p_sp->i_stream_type, &asf_object_extended_stream_header ) &&
 858             p_sp->i_type_specific_data_length >= 64 )
 859         {
 860             /* Now follows a 64 byte header of which we don't know much */
 861             es_format_t fmt;
 862             guid_t  *p_ref  = (guid_t *)p_sp->p_type_specific_data;
 863             uint8_t *p_data = p_sp->p_type_specific_data + 64;
 864             unsigned int i_data = p_sp->i_type_specific_data_length - 64;
 865
 866             msg_Dbg( p_demux, "Ext stream header detected. datasize = %d", p_sp->i_type_specific_data_length );
 867             if( ASF_CmpGUID( p_ref, &asf_object_extended_stream_type_audio ) &&
 868                 i_data >= sizeof( WAVEFORMATEX ) - 2)
 869             {
 870                 int      i_format;
 871                 es_format_Init( &fmt, AUDIO_ES, 0 );
 872                 i_format = GetWLE( &p_data[0] );
 873                 if( i_format == 0 )
 874                     fmt.i_codec = VLC_FOURCC( 'a','5','2',' ');
 875                 else
 876                     wf_tag_to_fourcc( i_format, &fmt.i_codec, NULL );
 877                 fmt.audio.i_channels        = GetWLE(  &p_data[2] );
 878                 fmt.audio.i_rate      = GetDWLE( &p_data[4] );
 879                 fmt.i_bitrate         = GetDWLE( &p_data[8] ) * 8;
 880                 fmt.audio.i_blockalign      = GetWLE(  &p_data[12] );
 881                 fmt.audio.i_bitspersample   = GetWLE(  &p_data[14] );
 882                 fmt.b_packetized = VLC_TRUE;
 883
 884                 if( p_sp->i_type_specific_data_length > sizeof( WAVEFORMATEX ) &&
 885                     i_format != WAVE_FORMAT_MPEGLAYER3 &&
 886                     i_format != WAVE_FORMAT_MPEG )
 887                 {
 888                     fmt.i_extra = __MIN( GetWLE( &p_data[16] ),
 889                                          p_sp->i_type_specific_data_length -
 890                                          sizeof( WAVEFORMATEX ) );
 891                     fmt.p_extra = malloc( fmt.i_extra );
 892                     memcpy( fmt.p_extra, &p_data[sizeof( WAVEFORMATEX )],
 893                         fmt.i_extra );
 894                 }
 895
 896                 tk->i_cat = AUDIO_ES;
 897                 tk->p_es = es_out_Add( p_demux->out, &fmt );
 898                 es_format_Clean( &fmt );
 899
 900                 msg_Dbg( p_demux, "added new audio stream (codec:0x%x,ID:%d)",
 901                     i_format, p_sp->i_stream_number );
 902             }
 903         }
 904         else
 905         {
 906             tk->i_cat = UNKNOWN_ES;
 907             msg_Dbg( p_demux, "ignoring unknown stream(ID:%d)",
 908                      p_sp->i_stream_number );
 909         }
 910     }
 911
 912     p_sys->i_data_begin = p_sys->p_root->p_data->i_object_pos + 50;
 913     if( p_sys->p_root->p_data->i_object_size != 0 )
 914     { /* local file */
 915         p_sys->i_data_end = p_sys->p_root->p_data->i_object_pos +
 916                                     p_sys->p_root->p_data->i_object_size;
 917     }
 918     else
 919     { /* live/broacast */
 920         p_sys->i_data_end = -1;
 921     }
 922
 923     /* go to first packet */
 924     stream_Seek( p_demux->s, p_sys->i_data_begin );
 925
 926     /* try to calculate movie time */
 927     if( p_sys->p_fp->i_data_packets_count > 0 )
 928     {
 929         int64_t i_count;
 930         int64_t i_size = stream_Size( p_demux->s );
 931
 932         if( p_sys->i_data_end > 0 && i_size > p_sys->i_data_end )
 933         {
 934             i_size = p_sys->i_data_end;
 935         }
 936
 937         /* real number of packets */
 938         i_count = ( i_size - p_sys->i_data_begin ) /
 939                   p_sys->p_fp->i_min_data_packet_size;
 940
 941         /* calculate the time duration in micro-s */
 942         p_sys->i_length = (mtime_t)p_sys->p_fp->i_play_duration / 10 *
 943                    (mtime_t)i_count /
 944                    (mtime_t)p_sys->p_fp->i_data_packets_count;
 945
 946         if( p_sys->i_length > 0 )
 947         {
 948             p_sys->i_bitrate = 8 * i_size * (int64_t)1000000 / p_sys->i_length;
 949         }
 950     }
 951
 952     /* Create meta information */
 953     p_sys->meta = vlc_meta_New();
 954
 955     if( ( p_cd = ASF_FindObject( p_sys->p_root->p_hdr,
 956                                  &asf_object_content_description_guid, 0 ) ) )
 957     {
 958         if( p_cd->psz_title && *p_cd->psz_title )
 959         {
 960             vlc_meta_SetTitle( p_sys->meta, p_cd->psz_title );
 961         }
 962         if( p_cd->psz_artist && *p_cd->psz_artist )
 963         {
 964              vlc_meta_SetArtist( p_sys->meta, p_cd->psz_artist );
 965         }
 966         if( p_cd->psz_copyright && *p_cd->psz_copyright )
 967         {
 968             vlc_meta_SetCopyright( p_sys->meta, p_cd->psz_copyright );
 969         }
 970         if( p_cd->psz_description && *p_cd->psz_description )
 971         {
 972             vlc_meta_SetDescription( p_sys->meta, p_cd->psz_description );
 973         }
 974         if( p_cd->psz_rating && *p_cd->psz_rating )
 975         {
 976             vlc_meta_SetRating( p_sys->meta, p_cd->psz_rating );
 977         }
 978     }
 979     /// \tood Fix Child meta for ASF tracks
 980 #if 0
 981     for( i_stream = 0, i = 0; i < 128; i++ )
 982     {
 983         asf_object_codec_list_t *p_cl = ASF_FindObject( p_sys->p_root->p_hdr,
 984                                                         &asf_object_codec_list_guid, 0 );
 985
 986         if( p_sys->track[i] )
 987         {
 988             vlc_meta_t *tk = vlc_meta_New();
 989             TAB_APPEND( p_sys->meta->i_track, p_sys->meta->track, tk );
 990
 991             if( p_cl && i_stream < p_cl->i_codec_entries_count )
 992             {
 993                 if( p_cl->codec[i_stream].psz_name &&
 994                     *p_cl->codec[i_stream].psz_name )
 995                 {
 996                     vlc_meta_Add( tk, VLC_META_CODEC_NAME,
 997                                   p_cl->codec[i_stream].psz_name );
 998                 }
 999                 if( p_cl->codec[i_stream].psz_description &&
1000                     *p_cl->codec[i_stream].psz_description )
1001                 {
1002                     vlc_meta_Add( tk, VLC_META_CODEC_DESCRIPTION,
1003                                   p_cl->codec[i_stream].psz_description );
1004                 }
1005             }
1006             i_stream++;
1007         }
1008     }
1009 #endif
1010
1011     es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
1012     return VLC_SUCCESS;
1013
1014 error:
1015     ASF_FreeObjectRoot( p_demux->s, p_sys->p_root );
1016     return VLC_EGENERIC;
1017 }
1018 /*****************************************************************************
1019  *
1020  *****************************************************************************/
1021 static void DemuxEnd( demux_t *p_demux )
1022 {
1023     demux_sys_t *p_sys = p_demux->p_sys;
1024     int         i;
1025
1026     if( p_sys->p_root )
1027     {
1028         ASF_FreeObjectRoot( p_demux->s, p_sys->p_root );
1029         p_sys->p_root = NULL;
1030     }
1031     if( p_sys->meta )
1032     {
1033         vlc_meta_Delete( p_sys->meta );
1034         p_sys->meta = NULL;
1035     }
1036
1037     for( i = 0; i < 128; i++ )
1038     {
1039         asf_track_t *tk = p_sys->track[i];
1040
1041         if( tk )
1042         {
1043             if( tk->p_frame )
1044             {
1045                 block_ChainRelease( tk->p_frame );
1046             }
1047             if( tk->p_es )
1048             {
1049                 es_out_Del( p_demux->out, tk->p_es );
1050             }
1051             free( tk );
1052         }
1053         p_sys->track[i] = 0;
1054     }
1055 }
1056