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

   1 /*****************************************************************************
   2  * real.c: Real demuxer.
   3  *****************************************************************************
   4  * Copyright (C) 2004 VideoLAN
   5  * $Id: real.c,v 1.3 2004/01/25 20:05:28 hartman Exp $
   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", 1);
  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     int         i;
  94
  95     if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
  96     {
  97         msg_Err( p_demux, "cannot peek" );
  98         return VLC_EGENERIC;
  99     }
 100     if( strncmp( p_peek, ".RMF", 4 ) )
 101     {
 102         msg_Warn( p_demux, "Real module discarded" );
 103         return VLC_EGENERIC;
 104     }
 105
 106     /* Fill p_demux field */
 107     p_demux->pf_demux = Demux;
 108     p_demux->pf_control = Control;
 109     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 110     p_sys->i_data_offset = 0;
 111     p_sys->i_track = 0;
 112     p_sys->track   = NULL;
 113     p_sys->i_pcr   = 0;
 114
 115
 116     /* Parse the headers */
 117     if( HeaderRead( p_demux ) )
 118     {
 119         int i;
 120         msg_Err( p_demux, "invalid header" );
 121         for( i = 0; i < p_sys->i_track; i++ )
 122         {
 123             real_track_t *tk = p_sys->track[i];
 124
 125             if( tk->p_es )
 126             {
 127                 es_out_Del( p_demux->out, tk->p_es );
 128             }
 129             free( tk );
 130         }
 131         if( p_sys->i_track > 0 )
 132         {
 133             free( p_sys->track );
 134         }
 135         free( p_sys );
 136         return VLC_EGENERIC;
 137     }
 138
 139     return VLC_SUCCESS;
 140 }
 141
 142 /*****************************************************************************
 143  * Close
 144  *****************************************************************************/
 145 static void Close( vlc_object_t *p_this )
 146 {
 147     demux_t *p_demux = (demux_t*)p_this;
 148     demux_sys_t *p_sys = p_demux->p_sys;
 149     int i;
 150
 151     for( i = 0; i < p_sys->i_track; i++ )
 152     {
 153         real_track_t *tk = p_sys->track[i];
 154
 155         if( tk->p_frame )
 156         {
 157             block_Release( tk->p_frame );
 158         }
 159         free( tk );
 160     }
 161
 162     if( p_sys->i_track > 0 )
 163     {
 164         free( p_sys->track );
 165     }
 166
 167     free( p_sys );
 168 }
 169
 170
 171 /*****************************************************************************
 172  * Demux:
 173  *****************************************************************************/
 174 static int Demux( demux_t *p_demux )
 175 {
 176     demux_sys_t *p_sys = p_demux->p_sys;
 177     uint8_t     header[18];
 178     int         i_size;
 179     int         i_id;
 180     int64_t     i_pts;
 181     int         i;
 182     real_track_t *tk = NULL;
 183     vlc_bool_t  b_selected;
 184
 185     if( p_sys->i_data_packets >= p_sys->i_data_packets_count )
 186     {
 187
 188         if( stream_Read( p_demux->s, header, 18 ) < 18 )
 189         {
 190             return 0;
 191         }
 192         if( strncmp( header, "DATA", 4 ) )
 193         {
 194             return 0;
 195         }
 196         p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
 197         p_sys->i_data_size   = GetDWBE( &header[4] );
 198         p_sys->i_data_packets_count = GetDWBE( &header[10] );
 199         p_sys->i_data_packets = 0;
 200         p_sys->i_data_offset_next = GetDWBE( &header[14] );
 201
 202         msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
 203                  p_sys->i_data_packets_count,
 204                  (uint32_t)p_sys->i_data_offset_next );
 205     }
 206
 207     if( stream_Read( p_demux->s, header, 12 ) < 12 )
 208     {
 209         return 0;
 210     }
 211     i_size = GetWBE( &header[2] ) - 12;
 212     i_id   = GetWBE( &header[4] );
 213     i_pts  = 1000 * GetDWBE( &header[6] );
 214     /* header[11] -> flags 0x02 -> keyframe */
 215     msg_Dbg( p_demux, "packet %d size=%d id=%d pts=%u",
 216              p_sys->i_data_packets, i_size, i_id, (uint32_t)(i_pts/1000) );
 217     p_sys->i_data_packets++;
 218
 219     stream_Read( p_demux->s, p_sys->buffer, i_size );
 220
 221     for( i = 0; i < p_sys->i_track; i++ )
 222     {
 223         if( p_sys->track[i]->i_id == i_id )
 224         {
 225             tk = p_sys->track[i];
 226         }
 227     }
 228
 229     if( tk == NULL )
 230     {
 231         msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
 232         return 1;
 233     }
 234     es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b_selected );
 235
 236     if( tk->fmt.i_cat == VIDEO_ES && b_selected )
 237     {
 238         uint8_t     *p = p_sys->buffer;
 239
 240         while( p < &p_sys->buffer[i_size - 2] )
 241         {
 242             uint8_t h = *p++;
 243             int     i_len = 0;
 244             int     i_copy;
 245             int     i_subseq = 0;
 246             int     i_seqnum = 0;
 247             int     i_offset = 0;
 248
 249             if( (h&0xc0) == 0x40 )
 250             {
 251                 /* Short header */
 252                 p++;
 253                 i_len = &p_sys->buffer[i_size] - p;
 254             }
 255             else
 256             {
 257                 if( (h&0x40) == 0 )
 258                 {
 259                     i_subseq = (*p++)&0x7f;
 260                 }
 261                 i_len = (p[0] << 8)|p[1]; p += 2;
 262                 if( (i_len&0xc000) == 0 )
 263                 {
 264                     i_len <<= 16;
 265                     i_len |= (p[0] << 8)|p[1]; p += 2;
 266                     i_len &= 0x3fffffff;
 267                 }
 268                 else
 269                 {
 270                     i_len &= 0x3fff;
 271                 }
 272
 273                 i_offset = (p[0] << 8)|p[1]; p += 2;
 274                 if( (i_offset&0xc000) == 0 )
 275                 {
 276                     i_offset <<= 16;
 277                     i_offset |= (p[0] << 8)|p[1]; p += 2;
 278                     i_offset &= 0x3fffffff;
 279                 }
 280                 else
 281                 {
 282                     i_offset &= 0x3fff;
 283                 }
 284                 i_seqnum = *p++;
 285             }
 286             i_copy = i_len - i_offset;
 287             if( i_copy > &p_sys->buffer[i_size] - p )
 288             {
 289                 i_copy = &p_sys->buffer[i_size] - p;
 290             }
 291             else if( i_copy < 0 )
 292             {
 293                 break;
 294             }
 295
 296             msg_Dbg( p_demux, "    - len=%d offset=%d size=%d subseq=%d seqnum=%d",
 297                      i_len, i_offset, i_copy, i_subseq, i_seqnum );
 298
 299             if( (h&0xc0) == 0x80 )
 300             {
 301                 /* last fragment -> fixes */
 302                 i_copy = i_offset;
 303                 i_offset = i_len - i_copy;
 304                 msg_Dbg( p_demux, "last fixing copy=%d offset=%d", i_copy, i_offset );
 305             }
 306
 307             if( tk->p_frame &&
 308                 ( tk->p_frame->i_dts != i_pts ||
 309                   tk->i_frame != i_len ) )
 310             {
 311                 msg_Dbg( p_demux, "sending size=%d", tk->p_frame->i_buffer );
 312
 313                 if( p_sys->i_pcr < tk->p_frame->i_dts )
 314                 {
 315                     p_sys->i_pcr = tk->p_frame->i_dts;
 316
 317                     es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
 318                 }
 319                 es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 320
 321                 tk->i_frame = 0;
 322                 tk->p_frame = NULL;
 323             }
 324
 325             if( (h&0xc0) != 0x80 && (h&0xc0) != 0x00 && tk->p_frame == NULL )
 326             {
 327                 /* no fragment */
 328                 i_len = i_copy;
 329                 i_offset = 0;
 330             }
 331
 332
 333             if( tk->p_frame == NULL )
 334             {
 335                 msg_Dbg( p_demux, "new frame size=%d", i_len );
 336                 tk->i_frame = i_len;
 337                 if( ( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) == NULL )
 338                 {
 339                     return -1;
 340                 }
 341                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 342                 tk->p_frame->i_dts = i_pts;
 343                 tk->p_frame->i_pts = i_pts;
 344
 345                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 346                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 0;      /* chunk counts */
 347             }
 348
 349             if( i_offset < tk->i_frame)
 350             {
 351                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 352
 353                 msg_Dbg( p_demux, "copying new buffer n=%d offset=%d copy=%d", i_ck, i_offset, i_copy );
 354
 355                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 356
 357                 memcpy( &tk->p_frame->p_buffer[i_offset + 8],
 358                         p, i_copy );
 359             }
 360
 361             p += i_copy;
 362
 363             if( (h&0xc0) != 0x80 )
 364             {
 365                 break;
 366             }
 367 #if 0
 368             if( tk->p_frame )
 369             {
 370                 /* append data */
 371                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 372
 373                 if( (h&0xc0) == 0x80 )
 374                 {
 375                     /* last fragment */
 376                     i_copy = i_offset;
 377                     i_offset = i_len - i_offset;
 378
 379                     ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 380                     memcpy( &tk->p_frame->p_buffer[i_offset+ 8], p, i_copy );
 381                     p += i_copy;
 382
 383                     if( p_sys->i_pcr < tk->p_frame->i_dts )
 384                     {
 385                         p_sys->i_pcr = tk->p_frame->i_dts;
 386                         es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
 387                     }
 388                     es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 389
 390                     tk->i_frame = 0;
 391                     tk->p_frame = NULL;
 392
 393                     continue;
 394                 }
 395
 396                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 397                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 398                 break;
 399             }
 400
 401             if( (h&0xc0) != 0x00 )
 402             {
 403                 block_t *p_frame;
 404
 405                 /* not fragmented */
 406                 if( ( p_frame = block_New( p_demux, i_copy + 8 + 8 ) ) == NULL )
 407                 {
 408                     return -1;
 409                 }
 410                 p_frame->i_dts = i_pts;
 411                 p_frame->i_pts = i_pts;
 412
 413                 ((uint32_t*)p_frame->p_buffer)[0] = i_copy;
 414                 ((uint32_t*)p_frame->p_buffer)[1] = 1;
 415                 ((uint32_t*)(p_frame->p_buffer+i_copy+8))[0] = 0;
 416                 memcpy( &p_frame->p_buffer[8], p, i_copy );
 417
 418                 p += i_copy;
 419
 420                 if( p_sys->i_pcr < p_frame->i_dts )
 421                 {
 422                     p_sys->i_pcr = p_frame->i_dts;
 423                     es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
 424                 }
 425                 es_out_Send( p_demux->out, tk->p_es, p_frame );
 426             }
 427             else
 428             {
 429                 /* First fragment */
 430                 tk->i_frame = i_len;
 431                 if( ( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) == NULL )
 432                 {
 433                     return -1;
 434                 }
 435                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 436                 tk->p_frame->i_dts = i_pts;
 437                 tk->p_frame->i_pts = i_pts;
 438
 439                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 440                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 1;      /* chunk counts */
 441                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[0] = i_offset;
 442                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 443
 444                 break;
 445             }
 446 #endif
 447         }
 448     }
 449     else if( tk->fmt.i_cat == AUDIO_ES && b_selected )
 450     {
 451         block_t *p_block = block_New( p_demux, i_size );
 452
 453         if( tk->fmt.i_codec == VLC_FOURCC( 'a', '5', '2', ' ' ) )
 454         {
 455             uint8_t *src = p_sys->buffer;
 456             uint8_t *dst = p_block->p_buffer;
 457
 458             /* byte swap data */
 459             while( dst < &p_block->p_buffer[i_size- 1])
 460             {
 461                 *dst++ = src[1];
 462                 *dst++ = src[0];
 463
 464                 src += 2;
 465             }
 466         }
 467         else
 468         {
 469             memcpy( p_block->p_buffer, p_sys->buffer, i_size );
 470         }
 471         p_block->i_dts =
 472         p_block->i_pts = i_pts;
 473
 474         if( p_sys->i_pcr < i_pts )
 475         {
 476             p_sys->i_pcr = i_pts;
 477
 478             es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
 479         }
 480         es_out_Send( p_demux->out, tk->p_es, p_block );
 481     }
 482
 483
 484     return 1;
 485 }
 486
 487 /*****************************************************************************
 488  * Control:
 489  *****************************************************************************/
 490 static int Control( demux_t *p_demux, int i_query, va_list args )
 491 {
 492     demux_sys_t *p_sys = p_demux->p_sys;
 493     double f, *pf;
 494     int64_t i64, *pi64;
 495
 496 #if 0
 497     switch( i_query )
 498     {
 499         case DEMUX_GET_POSITION:
 500             pf = (double*) va_arg( args, double* );
 501             i64 = stream_Size( p_demux->s );
 502             if( i64 > 0 )
 503             {
 504                 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
 505             }
 506             else
 507             {
 508                 *pf = 0.0;
 509             }
 510             return VLC_SUCCESS;
 511         case DEMUX_SET_POSITION:
 512             f = (double) va_arg( args, double );
 513             i64 = stream_Size( p_demux->s );
 514
 515             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 516
 517             return stream_Seek( p_demux->s, (int64_t)(i64 * f) );
 518
 519         case DEMUX_GET_TIME:
 520             pi64 = (int64_t*)va_arg( args, int64_t * );
 521             if( p_sys->i_mux_rate > 0 )
 522             {
 523                 *pi64 = (int64_t)1000000 * ( stream_Tell( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 524                 return VLC_SUCCESS;
 525             }
 526             *pi64 = 0;
 527             return VLC_EGENERIC;
 528
 529         case DEMUX_GET_LENGTH:
 530             pi64 = (int64_t*)va_arg( args, int64_t * );
 531             if( p_sys->i_mux_rate > 0 )
 532             {
 533                 *pi64 = (int64_t)1000000 * ( stream_Size( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 534                 return VLC_SUCCESS;
 535             }
 536             *pi64 = 0;
 537             return VLC_EGENERIC;
 538
 539         case DEMUX_SET_TIME:
 540         case DEMUX_GET_FPS:
 541         default:
 542             return VLC_EGENERIC;
 543     }
 544 #endif
 545     return VLC_EGENERIC;
 546 }
 547
 548 /*****************************************************************************
 549  * HeaderRead:
 550  *****************************************************************************/
 551 static int HeaderRead( demux_t *p_demux )
 552 {
 553     demux_sys_t *p_sys = p_demux->p_sys;
 554     uint8_t header[100];    /* FIXME */
 555
 556     uint32_t    i_id;
 557     uint32_t    i_size;
 558     int64_t     i_skip;
 559     int         i_version;
 560
 561     for( ;; )
 562     {
 563         /* Read the header */
 564         if( stream_Read( p_demux->s, header, 10 ) < 10 )
 565         {
 566             return VLC_EGENERIC;
 567         }
 568         i_id        = VLC_FOURCC( header[0], header[1], header[2], header[3] );
 569         i_size      = GetDWBE( &header[4] );
 570         i_version   = GetWBE( &header[8] );
 571
 572         msg_Dbg( p_demux, "object %4.4s size=%d version=%d",
 573                  (char*)&i_id, i_size, i_version );
 574
 575         if( i_size < 10 )
 576         {
 577             return VLC_EGENERIC;
 578         }
 579         i_skip = i_size - 10;
 580
 581         if( i_id == VLC_FOURCC('.','R','M','F') )
 582         {
 583             if( stream_Read( p_demux->s, header, 8 ) < 8 )
 584             {
 585                 return VLC_EGENERIC;
 586             }
 587             msg_Dbg( p_demux, "    - file version=0x%x num headers=%d",
 588                      GetDWBE( &header[0] ), GetDWBE( &header[4] ) );
 589
 590             i_skip -= 8;
 591         }
 592         else if( i_id == VLC_FOURCC('P','R','O','P') )
 593         {
 594             int i_flags;
 595
 596             if( stream_Read( p_demux->s, header, 40 ) < 40 )
 597             {
 598                 return VLC_EGENERIC;
 599             }
 600             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 601                      GetDWBE( &header[0] ), GetDWBE( &header[4] ) );
 602             msg_Dbg( p_demux, "    - max packet size=%d avg bitrate=%d",
 603                      GetDWBE( &header[8] ), GetDWBE( &header[12] ) );
 604             msg_Dbg( p_demux, "    - packets count=%d", GetDWBE( &header[16] ) );
 605             msg_Dbg( p_demux, "    - duration=%d ms", GetDWBE( &header[20] ) );
 606             msg_Dbg( p_demux, "    - preroll=%d ms", GetDWBE( &header[24] ) );
 607             msg_Dbg( p_demux, "    - index offset=%d", GetDWBE( &header[28] ) );
 608             msg_Dbg( p_demux, "    - data offset=%d", GetDWBE( &header[32] ) );
 609             msg_Dbg( p_demux, "    - num streams=%d", GetWBE( &header[36] ) );
 610             i_flags = GetWBE( &header[38]);
 611             msg_Dbg( p_demux, "    - flags=0x%x %s%s%s",
 612                      i_flags,
 613                      i_flags&0x0001 ? "PN_SAVE_ENABLED " : "",
 614                      i_flags&0x0002 ? "PN_PERFECT_PLAY_ENABLED " : "",
 615                      i_flags&0x0004 ? "PN_LIVE_BROADCAST" : "" );
 616             i_skip -= 40;
 617         }
 618         else if( i_id == VLC_FOURCC('C','O','N','T') )
 619         {
 620             int i_len;
 621             char *psz;
 622
 623             stream_Read( p_demux->s, header, 2 );
 624             if( ( i_len = GetWBE( header ) ) > 0 )
 625             {
 626                 psz = malloc( i_len + 1 );
 627                 stream_Read( p_demux->s, psz, i_len );
 628                 psz[i_len] = '\0';
 629
 630                 msg_Dbg( p_demux, "    - title=`%s'", psz );
 631                 free( psz );
 632                 i_skip -= i_len;
 633             }
 634             i_skip -= 2;
 635
 636             stream_Read( p_demux->s, header, 2 );
 637             if( ( i_len = GetWBE( header ) ) > 0 )
 638             {
 639                 psz = malloc( i_len + 1 );
 640                 stream_Read( p_demux->s, psz, i_len );
 641                 psz[i_len] = '\0';
 642
 643                 msg_Dbg( p_demux, "    - author=`%s'", psz );
 644                 free( psz );
 645                 i_skip -= i_len;
 646             }
 647             i_skip -= 2;
 648
 649             stream_Read( p_demux->s, header, 2 );
 650             if( ( i_len = GetWBE( header ) ) > 0 )
 651             {
 652                 psz = malloc( i_len + 1 );
 653                 stream_Read( p_demux->s, psz, i_len );
 654                 psz[i_len] = '\0';
 655
 656                 msg_Dbg( p_demux, "    - copyright=`%s'", psz );
 657                 free( psz );
 658                 i_skip -= i_len;
 659             }
 660             i_skip -= 2;
 661
 662             stream_Read( p_demux->s, header, 2 );
 663             if( ( i_len = GetWBE( header ) ) > 0 )
 664             {
 665                 psz = malloc( i_len + 1 );
 666                 stream_Read( p_demux->s, psz, i_len );
 667                 psz[i_len] = '\0';
 668
 669                 msg_Dbg( p_demux, "    - comment=`%s'", psz );
 670                 free( psz );
 671                 i_skip -= i_len;
 672             }
 673             i_skip -= 2;
 674         }
 675         else if( i_id == VLC_FOURCC('M','D','P','R') )
 676         {
 677             int  i_num;
 678             int  i_len;
 679             char *psz;
 680
 681             if( stream_Read( p_demux->s, header, 30 ) < 30 )
 682             {
 683                 return VLC_EGENERIC;
 684             }
 685             i_num = GetWBE( header );
 686             msg_Dbg( p_demux, "    - id=0x%x", i_num );
 687             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d", GetDWBE( &header[2] ), GetDWBE( &header[6] ) );
 688             msg_Dbg( p_demux, "    - max packet size=%d avg packet size=%d", GetDWBE( &header[10] ), GetDWBE( &header[14] ));
 689             msg_Dbg( p_demux, "    - start time=%d", GetDWBE( &header[18] ) );
 690             msg_Dbg( p_demux, "    - preroll=%d", GetDWBE( &header[22] ) );
 691             msg_Dbg( p_demux, "    - duration=%d", GetDWBE( &header[26] ));
 692             i_skip -= 30;
 693
 694
 695             stream_Read( p_demux->s, header, 1 );
 696             if( ( i_len = header[0] ) > 0 )
 697             {
 698                 psz = malloc( i_len + 1 );
 699                 stream_Read( p_demux->s, psz, i_len );
 700                 psz[i_len] = '\0';
 701
 702                 msg_Dbg( p_demux, "    - name=`%s'", psz );
 703                 free( psz );
 704                 i_skip -= i_len;
 705             }
 706             i_skip--;
 707
 708             stream_Read( p_demux->s, header, 1 );
 709             if( ( i_len = header[0] ) > 0 )
 710             {
 711                 psz = malloc( i_len + 1 );
 712                 stream_Read( p_demux->s, psz, i_len );
 713                 psz[i_len] = '\0';
 714
 715                 msg_Dbg( p_demux, "    - mime=`%s'", psz );
 716                 free( psz );
 717                 i_skip -= i_len;
 718             }
 719             i_skip--;
 720
 721             stream_Read( p_demux->s, header, 4 );
 722             if( ( i_len = GetDWBE( header ) ) > 0 )
 723             {
 724                 es_format_t  fmt;
 725                 real_track_t *tk;
 726                 uint8_t *p_peek;
 727
 728                 msg_Dbg( p_demux, "    - specific data len=%d", i_len );
 729                 if( stream_Peek( p_demux->s, &p_peek, 34 ) >= 34 )
 730                 {
 731                     if( !strncmp( &p_peek[4], "VIDO", 4 ) )
 732                     {
 733                         es_format_Init( &fmt, VIDEO_ES,
 734                                         VLC_FOURCC( p_peek[8], p_peek[9], p_peek[10], p_peek[11] ) );
 735                         fmt.video.i_width = GetWBE( &p_peek[12] );
 736                         fmt.video.i_height= GetWBE( &p_peek[14] );
 737
 738                         fmt.i_extra = 8;
 739                         fmt.p_extra = malloc( 8 );
 740                         ((uint32_t*)fmt.p_extra)[0] = GetDWBE( &p_peek[26] );
 741                         ((uint32_t*)fmt.p_extra)[1] = GetDWBE( &p_peek[30] );
 742
 743                         msg_Dbg( p_demux, "    - video 0x%08x 0x%08x",
 744                                  ((uint32_t*)fmt.p_extra)[0],
 745                                  ((uint32_t*)fmt.p_extra)[1] );
 746
 747                         if( GetDWBE( &p_peek[30] ) == 0x10003000 ||
 748                             GetDWBE( &p_peek[30] ) == 0x10003001 )
 749                         {
 750                             fmt.i_codec = VLC_FOURCC( 'R','V','1','3' );
 751                         }
 752
 753                         msg_Dbg( p_demux, "    - video %4.4s %dx%d",
 754                                  (char*)&fmt.i_codec,
 755                                  fmt.video.i_width, fmt.video.i_height );
 756
 757                         tk = malloc( sizeof( real_track_t ) );
 758                         tk->i_id = i_num;
 759                         tk->fmt = fmt;
 760                         tk->i_frame = 0;
 761                         tk->p_frame = NULL;
 762                         tk->p_es = es_out_Add( p_demux->out, &fmt );
 763
 764                         TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 765                     }
 766                     else if( !strncmp( p_peek, ".ra\xfd", 4 ) )
 767                     {
 768                         int i_version = GetWBE( &p_peek[4] );
 769                         msg_Dbg( p_demux, "    - audio version=%d", i_version );
 770
 771                         es_format_Init( &fmt, AUDIO_ES, 0 );
 772                         if( i_version == 4 && stream_Peek( p_demux->s, &p_peek, 56 ) >= 56 )
 773                         {
 774                             fmt.audio.i_channels = GetWBE( &p_peek[54] );
 775                             fmt.audio.i_rate = GetWBE( &p_peek[48] );
 776
 777                             if( stream_Peek( p_demux->s, &p_peek, 57 ) >= 57 )
 778                             {
 779                                 int i_extra = p_peek[56] + 1 + 4;
 780                                 if( stream_Peek( p_demux->s, &p_peek, 57 + i_extra ) >= 57 + i_extra )
 781                                 {
 782                                     memcpy( &fmt.i_codec, &p_peek[57 + p_peek[56] + 1], 4 );
 783                                 }
 784                             }
 785                         }
 786                         else if( i_version == 5 && stream_Peek( p_demux->s, &p_peek, 70 ) >= 70 )
 787                         {
 788                             memcpy( &fmt.i_codec, &p_peek[66], 4 );
 789                             fmt.audio.i_channels = GetWBE( &p_peek[60] );
 790                             fmt.audio.i_rate = GetWBE( &p_peek[54] );
 791                         }
 792                         msg_Dbg( p_demux, "    - audio codec=%4.4s channels=%d rate=%dHz",
 793                                 (char*)&fmt.i_codec,
 794                                 fmt.audio.i_channels, fmt.audio.i_rate );
 795
 796                         if( !strncasecmp( (char*)&fmt.i_codec, "dnet", 4 ) )
 797                         {
 798                             fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
 799                         }
 800
 801                         if( fmt.i_codec != 0 )
 802                         {
 803                             tk = malloc( sizeof( real_track_t ) );
 804                             tk->i_id = i_num;
 805                             tk->fmt = fmt;
 806                             tk->i_frame = 0;
 807                             tk->p_frame = NULL;
 808                             tk->p_es = es_out_Add( p_demux->out, &fmt );
 809
 810                             TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 811                         }
 812                     }
 813                 }
 814                 stream_Read( p_demux->s, NULL, i_len );
 815
 816                 i_skip -= i_len;
 817             }
 818             i_skip -= 4;
 819         }
 820         else if( i_id == VLC_FOURCC('D','A','T','A') )
 821         {
 822             stream_Read( p_demux->s, header, 8 );
 823
 824             p_sys->i_data_offset    = stream_Tell( p_demux->s ) - 10;
 825             p_sys->i_data_size      = i_size;
 826             p_sys->i_data_packets_count = GetDWBE( header );
 827             p_sys->i_data_packets   = 0;
 828             p_sys->i_data_offset_next = GetDWBE( &header[4] );
 829
 830             msg_Dbg( p_demux, "    - packets count=%d next=%u",
 831                      p_sys->i_data_packets_count,
 832                      (uint32_t)p_sys->i_data_offset_next );
 833
 834             /* we have finished the header */
 835             break;
 836         }
 837         else
 838         {
 839             /* unknow header */
 840             msg_Dbg( p_demux, "unknown chunk" );
 841         }
 842
 843         if( i_skip < 0 )
 844         {
 845             return VLC_EGENERIC;
 846         }
 847         stream_Read( p_demux->s, NULL, i_skip );
 848     }
 849
 850     /* TODO read index if possible */
 851
 852     return VLC_SUCCESS;
 853 }
 854
 855