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

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