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

   1 /*****************************************************************************
   2  * real.c: Real demuxer.
   3  *****************************************************************************
   4  * Copyright (C) 2004 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 /*****************************************************************************
  33  * Module descriptor
  34  *****************************************************************************/
  35 static int  Open    ( vlc_object_t * );
  36 static void Close  ( vlc_object_t * );
  37
  38 vlc_module_begin();
  39     set_description( _("Real demuxer" ) );
  40     set_capability( "demux2", 15 );
  41     set_callbacks( Open, Close );
  42     add_shortcut( "real" );
  43     add_shortcut( "rm" );
  44 vlc_module_end();
  45
  46 /*****************************************************************************
  47  * Local prototypes
  48  *****************************************************************************/
  49
  50 typedef struct
  51 {
  52     int         i_id;
  53     es_format_t fmt;
  54
  55     es_out_id_t *p_es;
  56
  57     int         i_frame;
  58     block_t     *p_frame;
  59
  60 } real_track_t;
  61
  62 struct demux_sys_t
  63 {
  64     int64_t  i_data_offset;
  65     int64_t  i_data_size;
  66     uint32_t i_data_packets_count;
  67     uint32_t i_data_packets;
  68     int64_t  i_data_offset_next;
  69
  70     int          i_track;
  71     real_track_t **track;
  72
  73     uint8_t buffer[65536];
  74
  75     int64_t     i_pcr;
  76 };
  77
  78 static int Demux( demux_t *p_demux );
  79 static int Control( demux_t *p_demux, int i_query, va_list args );
  80
  81 static int HeaderRead( demux_t *p_demux );
  82
  83 /*****************************************************************************
  84  * Open
  85  *****************************************************************************/
  86 static int Open( vlc_object_t *p_this )
  87 {
  88     demux_t     *p_demux = (demux_t*)p_this;
  89     demux_sys_t *p_sys;
  90
  91     uint8_t     *p_peek;
  92
  93     if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
  94     {
  95         msg_Err( p_demux, "cannot peek" );
  96         return VLC_EGENERIC;
  97     }
  98     if( strncmp( p_peek, ".RMF", 4 ) )
  99     {
 100         msg_Warn( p_demux, "Real module discarded" );
 101         return VLC_EGENERIC;
 102     }
 103
 104     /* Fill p_demux field */
 105     p_demux->pf_demux = Demux;
 106     p_demux->pf_control = Control;
 107     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 108     p_sys->i_data_offset = 0;
 109     p_sys->i_track = 0;
 110     p_sys->track   = NULL;
 111     p_sys->i_pcr   = 1;
 112
 113
 114     /* Parse the headers */
 115     if( HeaderRead( p_demux ) )
 116     {
 117         int i;
 118         msg_Err( p_demux, "invalid header" );
 119         for( i = 0; i < p_sys->i_track; i++ )
 120         {
 121             real_track_t *tk = p_sys->track[i];
 122
 123             if( tk->p_es )
 124             {
 125                 es_out_Del( p_demux->out, tk->p_es );
 126             }
 127             free( tk );
 128         }
 129         if( p_sys->i_track > 0 )
 130         {
 131             free( p_sys->track );
 132         }
 133         free( p_sys );
 134         return VLC_EGENERIC;
 135     }
 136
 137     return VLC_SUCCESS;
 138 }
 139
 140 /*****************************************************************************
 141  * Close
 142  *****************************************************************************/
 143 static void Close( vlc_object_t *p_this )
 144 {
 145     demux_t *p_demux = (demux_t*)p_this;
 146     demux_sys_t *p_sys = p_demux->p_sys;
 147     int i;
 148
 149     for( i = 0; i < p_sys->i_track; i++ )
 150     {
 151         real_track_t *tk = p_sys->track[i];
 152
 153         if( tk->p_frame )
 154         {
 155             block_Release( tk->p_frame );
 156         }
 157         free( tk );
 158     }
 159
 160     if( p_sys->i_track > 0 )
 161     {
 162         free( p_sys->track );
 163     }
 164
 165     free( p_sys );
 166 }
 167
 168
 169 /*****************************************************************************
 170  * Demux:
 171  *****************************************************************************/
 172 static int Demux( demux_t *p_demux )
 173 {
 174     demux_sys_t *p_sys = p_demux->p_sys;
 175     uint8_t     header[18];
 176     int         i_size;
 177     int         i_id;
 178     int64_t     i_pts;
 179     int         i;
 180     real_track_t *tk = NULL;
 181     vlc_bool_t  b_selected;
 182
 183     if( p_sys->i_data_packets >= p_sys->i_data_packets_count )
 184     {
 185
 186         if( stream_Read( p_demux->s, header, 18 ) < 18 )
 187         {
 188             return 0;
 189         }
 190         if( strncmp( header, "DATA", 4 ) )
 191         {
 192             return 0;
 193         }
 194         p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
 195         p_sys->i_data_size   = GetDWBE( &header[4] );
 196         p_sys->i_data_packets_count = GetDWBE( &header[10] );
 197         p_sys->i_data_packets = 0;
 198         p_sys->i_data_offset_next = GetDWBE( &header[14] );
 199
 200         msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
 201                  p_sys->i_data_packets_count,
 202                  (uint32_t)p_sys->i_data_offset_next );
 203     }
 204
 205     if( stream_Read( p_demux->s, header, 12 ) < 12 )
 206     {
 207         return 0;
 208     }
 209     i_size = GetWBE( &header[2] ) - 12;
 210     i_id   = GetWBE( &header[4] );
 211     i_pts  = 1000 * GetDWBE( &header[6] );
 212     /* header[11] -> flags 0x02 -> keyframe */
 213     msg_Dbg( p_demux, "packet %d size=%d id=%d pts=%u",
 214              p_sys->i_data_packets, i_size, i_id, (uint32_t)(i_pts/1000) );
 215     p_sys->i_data_packets++;
 216
 217     stream_Read( p_demux->s, p_sys->buffer, i_size );
 218
 219     for( i = 0; i < p_sys->i_track; i++ )
 220     {
 221         if( p_sys->track[i]->i_id == i_id )
 222         {
 223             tk = p_sys->track[i];
 224         }
 225     }
 226
 227     if( tk == NULL )
 228     {
 229         msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
 230         return 1;
 231     }
 232     es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b_selected );
 233
 234     if( tk->fmt.i_cat == VIDEO_ES && b_selected )
 235     {
 236         uint8_t     *p = p_sys->buffer;
 237
 238         while( p < &p_sys->buffer[i_size - 2] )
 239         {
 240             uint8_t h = *p++;
 241             int     i_len = 0;
 242             int     i_copy;
 243             int     i_subseq = 0;
 244             int     i_seqnum = 0;
 245             int     i_offset = 0;
 246
 247             if( (h&0xc0) == 0x40 )
 248             {
 249                 /* Short header */
 250                 p++;
 251                 i_len = &p_sys->buffer[i_size] - p;
 252             }
 253             else
 254             {
 255                 if( (h&0x40) == 0 )
 256                 {
 257                     i_subseq = (*p++)&0x7f;
 258                 }
 259                 i_len = (p[0] << 8)|p[1]; p += 2;
 260                 if( (i_len&0xc000) == 0 )
 261                 {
 262                     i_len <<= 16;
 263                     i_len |= (p[0] << 8)|p[1]; p += 2;
 264                     i_len &= 0x3fffffff;
 265                 }
 266                 else
 267                 {
 268                     i_len &= 0x3fff;
 269                 }
 270
 271                 i_offset = (p[0] << 8)|p[1]; p += 2;
 272                 if( (i_offset&0xc000) == 0 )
 273                 {
 274                     i_offset <<= 16;
 275                     i_offset |= (p[0] << 8)|p[1]; p += 2;
 276                     i_offset &= 0x3fffffff;
 277                 }
 278                 else
 279                 {
 280                     i_offset &= 0x3fff;
 281                 }
 282                 i_seqnum = *p++;
 283             }
 284             i_copy = i_len - i_offset;
 285             if( i_copy > &p_sys->buffer[i_size] - p )
 286             {
 287                 i_copy = &p_sys->buffer[i_size] - p;
 288             }
 289             else if( i_copy < 0 )
 290             {
 291                 break;
 292             }
 293
 294             msg_Dbg( p_demux, "    - len=%d offset=%d size=%d subseq=%d seqnum=%d",
 295                      i_len, i_offset, i_copy, i_subseq, i_seqnum );
 296
 297             if( (h&0xc0) == 0x80 )
 298             {
 299                 /* last fragment -> fixes */
 300                 i_copy = i_offset;
 301                 i_offset = i_len - i_copy;
 302                 msg_Dbg( p_demux, "last fixing copy=%d offset=%d", i_copy, i_offset );
 303             }
 304
 305             if( tk->p_frame &&
 306                 ( tk->p_frame->i_dts != i_pts ||
 307                   tk->i_frame != i_len ) )
 308             {
 309                 msg_Dbg( p_demux, "sending size=%d", tk->p_frame->i_buffer );
 310
 311                 if( p_sys->i_pcr < tk->p_frame->i_dts )
 312                 {
 313                     p_sys->i_pcr = tk->p_frame->i_dts;
 314
 315                     es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
 316                 }
 317                 es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 318
 319                 tk->i_frame = 0;
 320                 tk->p_frame = NULL;
 321             }
 322
 323             if( (h&0xc0) != 0x80 && (h&0xc0) != 0x00 && tk->p_frame == NULL )
 324             {
 325                 /* no fragment */
 326                 i_len = i_copy;
 327                 i_offset = 0;
 328             }
 329
 330
 331             if( tk->p_frame == NULL )
 332             {
 333                 msg_Dbg( p_demux, "new frame size=%d", i_len );
 334                 tk->i_frame = i_len;
 335                 if( ( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) == NULL )
 336                 {
 337                     return -1;
 338                 }
 339                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 340                 tk->p_frame->i_dts = i_pts;
 341                 tk->p_frame->i_pts = i_pts;
 342
 343                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 344                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 0;      /* chunk counts */
 345             }
 346
 347             if( i_offset < tk->i_frame)
 348             {
 349                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 350
 351                 msg_Dbg( p_demux, "copying new buffer n=%d offset=%d copy=%d", i_ck, i_offset, i_copy );
 352
 353                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 354
 355                 memcpy( &tk->p_frame->p_buffer[i_offset + 8],
 356                         p, i_copy );
 357             }
 358
 359             p += i_copy;
 360
 361             if( (h&0xc0) != 0x80 )
 362             {
 363                 break;
 364             }
 365 #if 0
 366             if( tk->p_frame )
 367             {
 368                 /* append data */
 369                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 370
 371                 if( (h&0xc0) == 0x80 )
 372                 {
 373                     /* last fragment */
 374                     i_copy = i_offset;
 375                     i_offset = i_len - i_offset;
 376
 377                     ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 378                     memcpy( &tk->p_frame->p_buffer[i_offset+ 8], p, i_copy );
 379                     p += i_copy;
 380
 381                     if( p_sys->i_pcr < tk->p_frame->i_dts )
 382                     {
 383                         p_sys->i_pcr = tk->p_frame->i_dts;
 384                         es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
 385                     }
 386                     es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 387
 388                     tk->i_frame = 0;
 389                     tk->p_frame = NULL;
 390
 391                     continue;
 392                 }
 393
 394                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 395                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 396                 break;
 397             }
 398
 399             if( (h&0xc0) != 0x00 )
 400             {
 401                 block_t *p_frame;
 402
 403                 /* not fragmented */
 404                 if( ( p_frame = block_New( p_demux, i_copy + 8 + 8 ) ) == NULL )
 405                 {
 406                     return -1;
 407                 }
 408                 p_frame->i_dts = i_pts;
 409                 p_frame->i_pts = i_pts;
 410
 411                 ((uint32_t*)p_frame->p_buffer)[0] = i_copy;
 412                 ((uint32_t*)p_frame->p_buffer)[1] = 1;
 413                 ((uint32_t*)(p_frame->p_buffer+i_copy+8))[0] = 0;
 414                 memcpy( &p_frame->p_buffer[8], p, i_copy );
 415
 416                 p += i_copy;
 417
 418                 if( p_sys->i_pcr < p_frame->i_dts )
 419                 {
 420                     p_sys->i_pcr = p_frame->i_dts;
 421                     es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
 422                 }
 423                 es_out_Send( p_demux->out, tk->p_es, p_frame );
 424             }
 425             else
 426             {
 427                 /* First fragment */
 428                 tk->i_frame = i_len;
 429                 if( ( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) == NULL )
 430                 {
 431                     return -1;
 432                 }
 433                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 434                 tk->p_frame->i_dts = i_pts;
 435                 tk->p_frame->i_pts = i_pts;
 436
 437                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 438                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 1;      /* chunk counts */
 439                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[0] = i_offset;
 440                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 441
 442                 break;
 443             }
 444 #endif
 445         }
 446     }
 447     else if( tk->fmt.i_cat == AUDIO_ES && b_selected )
 448     {
 449         /* Set PCR */
 450         if( p_sys->i_pcr < i_pts )
 451         {
 452             p_sys->i_pcr = i_pts;
 453             es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
 454         }
 455
 456         if( tk->fmt.i_codec == VLC_FOURCC( 'm', 'p', '4', 'a' ) )
 457         {
 458             int     i_sub = (p_sys->buffer[1] >> 4)&0x0f;
 459             uint8_t *p_sub = &p_sys->buffer[2+2*i_sub];
 460
 461             int i;
 462             for( i = 0; i < i_sub; i++ )
 463             {
 464                 int i_sub_size = GetWBE( &p_sys->buffer[2+i*2]);
 465                 block_t *p_block = block_New( p_demux, i_sub_size );
 466                 if( p_block )
 467                 {
 468                     memcpy( p_block->p_buffer, p_sub, i_sub_size );
 469                     p_sub += i_sub_size;
 470
 471                     p_block->i_dts =
 472                     p_block->i_pts = ( i == 0 ? i_pts : 0 );
 473
 474                     es_out_Send( p_demux->out, tk->p_es, p_block );
 475                 }
 476             }
 477         }
 478         else
 479         {
 480             block_t *p_block = block_New( p_demux, i_size );
 481
 482             if( tk->fmt.i_codec == VLC_FOURCC( 'a', '5', '2', ' ' ) )
 483             {
 484                 uint8_t *src = p_sys->buffer;
 485                 uint8_t *dst = p_block->p_buffer;
 486
 487                 /* byte swap data */
 488                 while( dst < &p_block->p_buffer[i_size- 1])
 489                 {
 490                     *dst++ = src[1];
 491                     *dst++ = src[0];
 492
 493                     src += 2;
 494                 }
 495             }
 496             else
 497             {
 498                 memcpy( p_block->p_buffer, p_sys->buffer, i_size );
 499             }
 500             p_block->i_dts =
 501             p_block->i_pts = i_pts;
 502
 503             es_out_Send( p_demux->out, tk->p_es, p_block );
 504         }
 505     }
 506
 507
 508     return 1;
 509 }
 510
 511 /*****************************************************************************
 512  * Control:
 513  *****************************************************************************/
 514 static int Control( demux_t *p_demux, int i_query, va_list args )
 515 {
 516 #if 0
 517     demux_sys_t *p_sys = p_demux->p_sys;
 518     double f, *pf;
 519     int64_t i64, *pi64;
 520
 521     switch( i_query )
 522     {
 523         case DEMUX_GET_POSITION:
 524             pf = (double*) va_arg( args, double* );
 525             i64 = stream_Size( p_demux->s );
 526             if( i64 > 0 )
 527             {
 528                 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
 529             }
 530             else
 531             {
 532                 *pf = 0.0;
 533             }
 534             return VLC_SUCCESS;
 535         case DEMUX_SET_POSITION:
 536             f = (double) va_arg( args, double );
 537             i64 = stream_Size( p_demux->s );
 538
 539             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 540
 541             return stream_Seek( p_demux->s, (int64_t)(i64 * f) );
 542
 543         case DEMUX_GET_TIME:
 544             pi64 = (int64_t*)va_arg( args, int64_t * );
 545             if( p_sys->i_mux_rate > 0 )
 546             {
 547                 *pi64 = (int64_t)1000000 * ( stream_Tell( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 548                 return VLC_SUCCESS;
 549             }
 550             *pi64 = 0;
 551             return VLC_EGENERIC;
 552
 553         case DEMUX_GET_LENGTH:
 554             pi64 = (int64_t*)va_arg( args, int64_t * );
 555             if( p_sys->i_mux_rate > 0 )
 556             {
 557                 *pi64 = (int64_t)1000000 * ( stream_Size( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 558                 return VLC_SUCCESS;
 559             }
 560             *pi64 = 0;
 561             return VLC_EGENERIC;
 562
 563         case DEMUX_SET_TIME:
 564         case DEMUX_GET_FPS:
 565         default:
 566             return VLC_EGENERIC;
 567     }
 568 #endif
 569     return VLC_EGENERIC;
 570 }
 571
 572 /*****************************************************************************
 573  * HeaderRead:
 574  *****************************************************************************/
 575 static int HeaderRead( demux_t *p_demux )
 576 {
 577     demux_sys_t *p_sys = p_demux->p_sys;
 578     uint8_t header[100];    /* FIXME */
 579
 580     uint32_t    i_id;
 581     uint32_t    i_size;
 582     int64_t     i_skip;
 583     int         i_version;
 584
 585     for( ;; )
 586     {
 587         /* Read the header */
 588         if( stream_Read( p_demux->s, header, 10 ) < 10 )
 589         {
 590             return VLC_EGENERIC;
 591         }
 592         i_id        = VLC_FOURCC( header[0], header[1], header[2], header[3] );
 593         i_size      = GetDWBE( &header[4] );
 594         i_version   = GetWBE( &header[8] );
 595
 596         msg_Dbg( p_demux, "object %4.4s size=%d version=%d",
 597                  (char*)&i_id, i_size, i_version );
 598
 599         if( i_size < 10 )
 600         {
 601             return VLC_EGENERIC;
 602         }
 603         i_skip = i_size - 10;
 604
 605         if( i_id == VLC_FOURCC('.','R','M','F') )
 606         {
 607             if( stream_Read( p_demux->s, header, 8 ) < 8 )
 608             {
 609                 return VLC_EGENERIC;
 610             }
 611             msg_Dbg( p_demux, "    - file version=0x%x num headers=%d",
 612                      GetDWBE( &header[0] ), GetDWBE( &header[4] ) );
 613
 614             i_skip -= 8;
 615         }
 616         else if( i_id == VLC_FOURCC('P','R','O','P') )
 617         {
 618             int i_flags;
 619
 620             if( stream_Read( p_demux->s, header, 40 ) < 40 )
 621             {
 622                 return VLC_EGENERIC;
 623             }
 624             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 625                      GetDWBE( &header[0] ), GetDWBE( &header[4] ) );
 626             msg_Dbg( p_demux, "    - max packet size=%d avg bitrate=%d",
 627                      GetDWBE( &header[8] ), GetDWBE( &header[12] ) );
 628             msg_Dbg( p_demux, "    - packets count=%d", GetDWBE( &header[16] ) );
 629             msg_Dbg( p_demux, "    - duration=%d ms", GetDWBE( &header[20] ) );
 630             msg_Dbg( p_demux, "    - preroll=%d ms", GetDWBE( &header[24] ) );
 631             msg_Dbg( p_demux, "    - index offset=%d", GetDWBE( &header[28] ) );
 632             msg_Dbg( p_demux, "    - data offset=%d", GetDWBE( &header[32] ) );
 633             msg_Dbg( p_demux, "    - num streams=%d", GetWBE( &header[36] ) );
 634             i_flags = GetWBE( &header[38]);
 635             msg_Dbg( p_demux, "    - flags=0x%x %s%s%s",
 636                      i_flags,
 637                      i_flags&0x0001 ? "PN_SAVE_ENABLED " : "",
 638                      i_flags&0x0002 ? "PN_PERFECT_PLAY_ENABLED " : "",
 639                      i_flags&0x0004 ? "PN_LIVE_BROADCAST" : "" );
 640             i_skip -= 40;
 641         }
 642         else if( i_id == VLC_FOURCC('C','O','N','T') )
 643         {
 644             int i_len;
 645             char *psz;
 646
 647             stream_Read( p_demux->s, header, 2 );
 648             if( ( i_len = GetWBE( header ) ) > 0 )
 649             {
 650                 psz = malloc( i_len + 1 );
 651                 stream_Read( p_demux->s, psz, i_len );
 652                 psz[i_len] = '\0';
 653
 654                 msg_Dbg( p_demux, "    - title=`%s'", psz );
 655                 free( psz );
 656                 i_skip -= i_len;
 657             }
 658             i_skip -= 2;
 659
 660             stream_Read( p_demux->s, header, 2 );
 661             if( ( i_len = GetWBE( header ) ) > 0 )
 662             {
 663                 psz = malloc( i_len + 1 );
 664                 stream_Read( p_demux->s, psz, i_len );
 665                 psz[i_len] = '\0';
 666
 667                 msg_Dbg( p_demux, "    - author=`%s'", psz );
 668                 free( psz );
 669                 i_skip -= i_len;
 670             }
 671             i_skip -= 2;
 672
 673             stream_Read( p_demux->s, header, 2 );
 674             if( ( i_len = GetWBE( header ) ) > 0 )
 675             {
 676                 psz = malloc( i_len + 1 );
 677                 stream_Read( p_demux->s, psz, i_len );
 678                 psz[i_len] = '\0';
 679
 680                 msg_Dbg( p_demux, "    - copyright=`%s'", psz );
 681                 free( psz );
 682                 i_skip -= i_len;
 683             }
 684             i_skip -= 2;
 685
 686             stream_Read( p_demux->s, header, 2 );
 687             if( ( i_len = GetWBE( header ) ) > 0 )
 688             {
 689                 psz = malloc( i_len + 1 );
 690                 stream_Read( p_demux->s, psz, i_len );
 691                 psz[i_len] = '\0';
 692
 693                 msg_Dbg( p_demux, "    - comment=`%s'", psz );
 694                 free( psz );
 695                 i_skip -= i_len;
 696             }
 697             i_skip -= 2;
 698         }
 699         else if( i_id == VLC_FOURCC('M','D','P','R') )
 700         {
 701             int  i_num;
 702             int  i_len;
 703             char *psz;
 704
 705             if( stream_Read( p_demux->s, header, 30 ) < 30 )
 706             {
 707                 return VLC_EGENERIC;
 708             }
 709             i_num = GetWBE( header );
 710             msg_Dbg( p_demux, "    - id=0x%x", i_num );
 711             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d", GetDWBE( &header[2] ), GetDWBE( &header[6] ) );
 712             msg_Dbg( p_demux, "    - max packet size=%d avg packet size=%d", GetDWBE( &header[10] ), GetDWBE( &header[14] ));
 713             msg_Dbg( p_demux, "    - start time=%d", GetDWBE( &header[18] ) );
 714             msg_Dbg( p_demux, "    - preroll=%d", GetDWBE( &header[22] ) );
 715             msg_Dbg( p_demux, "    - duration=%d", GetDWBE( &header[26] ));
 716             i_skip -= 30;
 717
 718
 719             stream_Read( p_demux->s, header, 1 );
 720             if( ( i_len = header[0] ) > 0 )
 721             {
 722                 psz = malloc( i_len + 1 );
 723                 stream_Read( p_demux->s, psz, i_len );
 724                 psz[i_len] = '\0';
 725
 726                 msg_Dbg( p_demux, "    - name=`%s'", psz );
 727                 free( psz );
 728                 i_skip -= i_len;
 729             }
 730             i_skip--;
 731
 732             stream_Read( p_demux->s, header, 1 );
 733             if( ( i_len = header[0] ) > 0 )
 734             {
 735                 psz = malloc( i_len + 1 );
 736                 stream_Read( p_demux->s, psz, i_len );
 737                 psz[i_len] = '\0';
 738
 739                 msg_Dbg( p_demux, "    - mime=`%s'", psz );
 740                 free( psz );
 741                 i_skip -= i_len;
 742             }
 743             i_skip--;
 744
 745             stream_Read( p_demux->s, header, 4 );
 746             if( ( i_len = GetDWBE( header ) ) > 0 )
 747             {
 748                 es_format_t  fmt;
 749                 real_track_t *tk;
 750                 uint8_t *p_peek;
 751
 752                 msg_Dbg( p_demux, "    - specific data len=%d", i_len );
 753                 if( stream_Peek( p_demux->s, &p_peek, 34 ) >= 34 )
 754                 {
 755                     if( !strncmp( &p_peek[4], "VIDO", 4 ) )
 756                     {
 757                         es_format_Init( &fmt, VIDEO_ES,
 758                                         VLC_FOURCC( p_peek[8], p_peek[9], p_peek[10], p_peek[11] ) );
 759                         fmt.video.i_width = GetWBE( &p_peek[12] );
 760                         fmt.video.i_height= GetWBE( &p_peek[14] );
 761
 762                         fmt.i_extra = 8;
 763                         fmt.p_extra = malloc( 8 );
 764                         ((uint32_t*)fmt.p_extra)[0] = GetDWBE( &p_peek[26] );
 765                         ((uint32_t*)fmt.p_extra)[1] = GetDWBE( &p_peek[30] );
 766
 767                         msg_Dbg( p_demux, "    - video 0x%08x 0x%08x",
 768                                  ((uint32_t*)fmt.p_extra)[0],
 769                                  ((uint32_t*)fmt.p_extra)[1] );
 770
 771                         if( GetDWBE( &p_peek[30] ) == 0x10003000 ||
 772                             GetDWBE( &p_peek[30] ) == 0x10003001 )
 773                         {
 774                             fmt.i_codec = VLC_FOURCC( 'R','V','1','3' );
 775                         }
 776
 777                         msg_Dbg( p_demux, "    - video %4.4s %dx%d",
 778                                  (char*)&fmt.i_codec,
 779                                  fmt.video.i_width, fmt.video.i_height );
 780
 781                         tk = malloc( sizeof( real_track_t ) );
 782                         tk->i_id = i_num;
 783                         tk->fmt = fmt;
 784                         tk->i_frame = 0;
 785                         tk->p_frame = NULL;
 786                         tk->p_es = es_out_Add( p_demux->out, &fmt );
 787
 788                         TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 789                     }
 790                     else if( !strncmp( p_peek, ".ra\xfd", 4 ) )
 791                     {
 792                         int     i_version = GetWBE( &p_peek[4] );
 793                         uint8_t *p_extra = NULL;
 794                         msg_Dbg( p_demux, "    - audio version=%d", i_version );
 795
 796                         es_format_Init( &fmt, AUDIO_ES, 0 );
 797                         if( i_version == 4 && stream_Peek( p_demux->s, &p_peek, 56 ) >= 56 )
 798                         {
 799                             fmt.audio.i_channels = GetWBE( &p_peek[54] );
 800                             fmt.audio.i_rate = GetWBE( &p_peek[48] );
 801
 802                             if( stream_Peek( p_demux->s, &p_peek, 57 ) >= 57 )
 803                             {
 804                                 int i_extra = p_peek[56] + 1 + 4;
 805                                 if( stream_Peek( p_demux->s, &p_peek, 57 + i_extra ) >= 57 + i_extra )
 806                                 {
 807                                     memcpy( &fmt.i_codec, &p_peek[57 + p_peek[56] + 1], 4 );
 808                                 }
 809                                 p_extra = &p_peek[57 + p_peek[56] + 1+ 4 + 3];
 810                             }
 811                         }
 812                         else if( i_version == 5 && stream_Peek( p_demux->s, &p_peek, 70 ) >= 70 )
 813                         {
 814                             memcpy( &fmt.i_codec, &p_peek[66], 4 );
 815                             fmt.audio.i_channels = GetWBE( &p_peek[60] );
 816                             fmt.audio.i_rate = GetWBE( &p_peek[54] );
 817
 818                             p_extra = &p_peek[66+4+3+1];
 819                         }
 820                         msg_Dbg( p_demux, "    - audio codec=%4.4s channels=%d rate=%dHz",
 821                                 (char*)&fmt.i_codec,
 822                                 fmt.audio.i_channels, fmt.audio.i_rate );
 823
 824                         if( fmt.i_codec == VLC_FOURCC( 'd', 'n', 'e', 't' ) )
 825                         {
 826                             fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
 827                         }
 828                         else if( fmt.i_codec == VLC_FOURCC( 'r', 'a', 'a', 'c' ) ||
 829                                  fmt.i_codec == VLC_FOURCC( 'r', 'a', 'c', 'p' ) )
 830                         {
 831                             int i_peek = p_extra - p_peek;
 832                             if( stream_Peek( p_demux->s, &p_peek, i_peek + 4 ) >= i_peek + 4 )
 833                             {
 834                                 int i_extra = GetDWBE( &p_peek[i_peek] );
 835
 836                                 if( i_extra > 1 && i_peek + 4 + i_extra <= i_len &&
 837                                     stream_Peek( p_demux->s, &p_peek, i_peek + 4 + i_extra ) >= i_peek + 4 + i_extra )
 838                                 {
 839                                     fmt.i_extra = i_extra - 1;
 840                                     fmt.p_extra = malloc ( i_extra - 1 );
 841                                     memcpy( fmt.p_extra, &p_peek[i_peek+4+1], i_extra - 1 );
 842
 843                                     msg_Dbg( p_demux, "        - extra data=%d", i_extra );
 844                                     {
 845                                         int i;
 846                                         for( i = 0; i < fmt.i_extra; i++ )
 847                                         {
 848                                             msg_Dbg( p_demux, "          data[%d] = 0x%x", i,((uint8_t*)fmt.p_extra)[i] );
 849                                         }
 850                                     }
 851                                 }
 852                             }
 853                             fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
 854                         }
 855
 856                         if( fmt.i_codec != 0 )
 857                         {
 858                             tk = malloc( sizeof( real_track_t ) );
 859                             tk->i_id = i_num;
 860                             tk->fmt = fmt;
 861                             tk->i_frame = 0;
 862                             tk->p_frame = NULL;
 863                             tk->p_es = es_out_Add( p_demux->out, &fmt );
 864
 865                             TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 866                         }
 867                     }
 868                 }
 869                 stream_Read( p_demux->s, NULL, i_len );
 870
 871                 i_skip -= i_len;
 872             }
 873             i_skip -= 4;
 874         }
 875         else if( i_id == VLC_FOURCC('D','A','T','A') )
 876         {
 877             stream_Read( p_demux->s, header, 8 );
 878
 879             p_sys->i_data_offset    = stream_Tell( p_demux->s ) - 10;
 880             p_sys->i_data_size      = i_size;
 881             p_sys->i_data_packets_count = GetDWBE( header );
 882             p_sys->i_data_packets   = 0;
 883             p_sys->i_data_offset_next = GetDWBE( &header[4] );
 884
 885             msg_Dbg( p_demux, "    - packets count=%d next=%u",
 886                      p_sys->i_data_packets_count,
 887                      (uint32_t)p_sys->i_data_offset_next );
 888
 889             /* we have finished the header */
 890             break;
 891         }
 892         else
 893         {
 894             /* unknow header */
 895             msg_Dbg( p_demux, "unknown chunk" );
 896         }
 897
 898         if( i_skip < 0 )
 899         {
 900             return VLC_EGENERIC;
 901         }
 902         stream_Read( p_demux->s, NULL, i_skip );
 903     }
 904
 905     /* TODO read index if possible */
 906
 907     return VLC_SUCCESS;
 908 }
 909
 910