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 static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num );
  85
  86 /*****************************************************************************
  87  * Open
  88  *****************************************************************************/
  89 static int Open( vlc_object_t *p_this )
  90 {
  91     demux_t     *p_demux = (demux_t*)p_this;
  92     demux_sys_t *p_sys;
  93
  94     uint8_t     *p_peek;
  95
  96     if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 ) return VLC_EGENERIC;
  97     if( strncmp( (char *)p_peek, ".RMF", 4 ) ) return VLC_EGENERIC;
  98
  99     /* Fill p_demux field */
 100     p_demux->pf_demux = Demux;
 101     p_demux->pf_control = Control;
 102     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 103     memset( p_sys, 0, sizeof( demux_sys_t ) );
 104     p_sys->i_data_offset = 0;
 105     p_sys->i_track = 0;
 106     p_sys->track   = NULL;
 107     p_sys->i_pcr   = 1;
 108
 109
 110     /* Parse the headers */
 111     if( HeaderRead( p_demux ) )
 112     {
 113         int i;
 114         msg_Err( p_demux, "invalid header" );
 115         for( i = 0; i < p_sys->i_track; i++ )
 116         {
 117             real_track_t *tk = p_sys->track[i];
 118
 119             if( tk->p_es )
 120             {
 121                 es_out_Del( p_demux->out, tk->p_es );
 122             }
 123             free( tk );
 124         }
 125         if( p_sys->i_track > 0 )
 126         {
 127             free( p_sys->track );
 128         }
 129         free( p_sys );
 130         return VLC_EGENERIC;
 131     }
 132
 133     return VLC_SUCCESS;
 134 }
 135
 136 /*****************************************************************************
 137  * Close
 138  *****************************************************************************/
 139 static void Close( vlc_object_t *p_this )
 140 {
 141     demux_t *p_demux = (demux_t*)p_this;
 142     demux_sys_t *p_sys = p_demux->p_sys;
 143     int i;
 144
 145     for( i = 0; i < p_sys->i_track; i++ )
 146     {
 147         real_track_t *tk = p_sys->track[i];
 148
 149         if( tk->p_frame ) block_Release( tk->p_frame );
 150         es_format_Clean( &tk->fmt );
 151         free( tk );
 152     }
 153
 154     if( p_sys->i_track > 0 ) free( p_sys->track );
 155     free( p_sys );
 156 }
 157
 158
 159 /*****************************************************************************
 160  * Demux:
 161  *****************************************************************************/
 162 static int Demux( demux_t *p_demux )
 163 {
 164     demux_sys_t *p_sys = p_demux->p_sys;
 165     uint8_t     header[18];
 166     int         i_size;
 167     int         i_id;
 168     int64_t     i_pts;
 169     int         i;
 170     real_track_t *tk = NULL;
 171     vlc_bool_t  b_selected;
 172
 173     if( p_sys->i_data_packets >= p_sys->i_data_packets_count &&
 174         p_sys->i_data_packets_count )
 175     {
 176         if( stream_Read( p_demux->s, header, 18 ) < 18 )
 177         {
 178             return 0;
 179         }
 180         if( strncmp( (char *)header, "DATA", 4 ) )
 181         {
 182             return 0;
 183         }
 184         p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
 185         p_sys->i_data_size   = GetDWBE( &header[4] );
 186         p_sys->i_data_packets_count = GetDWBE( &header[10] );
 187         p_sys->i_data_packets = 0;
 188         p_sys->i_data_offset_next = GetDWBE( &header[14] );
 189
 190         msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
 191                  p_sys->i_data_packets_count,
 192                  (uint32_t)p_sys->i_data_offset_next );
 193     }
 194
 195     if( stream_Read( p_demux->s, header, 12 ) < 12 ) return 0;
 196
 197     i_size = GetWBE( &header[2] ) - 12;
 198     i_id   = GetWBE( &header[4] );
 199     i_pts  = 1000 * GetDWBE( &header[6] );
 200     i_pts += 1000; /* Avoid 0 pts */
 201
 202     /* header[11] -> flags 0x02 -> keyframe */
 203
 204 #if 0
 205     msg_Dbg( p_demux, "packet %d size=%d id=%d pts=%u",
 206              p_sys->i_data_packets, i_size, i_id, (uint32_t)(i_pts/1000) );
 207 #endif
 208
 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 ) tk = p_sys->track[i];
 216     }
 217
 218     if( tk == NULL )
 219     {
 220         msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
 221         return 1;
 222     }
 223     es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b_selected );
 224
 225     if( tk->fmt.i_cat == VIDEO_ES && b_selected )
 226     {
 227         uint8_t *p = p_sys->buffer;
 228
 229         while( p < &p_sys->buffer[i_size - 2] )
 230         {
 231             uint8_t h = *p++;
 232             int     i_len = 0;
 233             int     i_copy;
 234             int     i_subseq = 0;
 235             int     i_seqnum = 0;
 236             int     i_offset = 0;
 237
 238             if( (h&0xc0) == 0x40 )
 239             {
 240                 /* Short header */
 241                 p++;
 242                 i_len = &p_sys->buffer[i_size] - p;
 243             }
 244             else
 245             {
 246                 if( (h&0x40) == 0 )
 247                 {
 248                     i_subseq = (*p++)&0x7f;
 249                 }
 250                 i_len = (p[0] << 8)|p[1]; p += 2;
 251                 if( (i_len&0xc000) == 0 )
 252                 {
 253                     i_len <<= 16;
 254                     i_len |= (p[0] << 8)|p[1]; p += 2;
 255                     i_len &= 0x3fffffff;
 256                 }
 257                 else
 258                 {
 259                     i_len &= 0x3fff;
 260                 }
 261
 262                 i_offset = (p[0] << 8)|p[1]; p += 2;
 263                 if( (i_offset&0xc000) == 0 )
 264                 {
 265                     i_offset <<= 16;
 266                     i_offset |= (p[0] << 8)|p[1]; p += 2;
 267                     i_offset &= 0x3fffffff;
 268                 }
 269                 else
 270                 {
 271                     i_offset &= 0x3fff;
 272                 }
 273                 i_seqnum = *p++;
 274             }
 275
 276             i_copy = i_len - i_offset;
 277             if( i_copy > &p_sys->buffer[i_size] - p )
 278             {
 279                 i_copy = &p_sys->buffer[i_size] - p;
 280             }
 281             else if( i_copy < 0 )
 282             {
 283                 break;
 284             }
 285
 286             msg_Dbg( p_demux, "    - len=%d offset=%d size=%d subseq=%d seqnum=%d",
 287                      i_len, i_offset, i_copy, i_subseq, i_seqnum );
 288
 289             if( (h&0xc0) == 0x80 )
 290             {
 291                 /* last fragment -> fixes */
 292                 i_copy = i_offset;
 293                 i_offset = i_len - i_copy;
 294                 msg_Dbg( p_demux, "last fixing copy=%d offset=%d",
 295                          i_copy, i_offset );
 296             }
 297
 298             if( tk->p_frame &&
 299                 ( tk->p_frame->i_dts != i_pts ||
 300                   tk->i_frame != i_len ) )
 301             {
 302                 msg_Dbg( p_demux, "sending size=%d", tk->p_frame->i_buffer );
 303
 304                 if( p_sys->i_pcr < tk->p_frame->i_dts )
 305                 {
 306                     p_sys->i_pcr = tk->p_frame->i_dts;
 307
 308                     es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 309                                     (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 )
 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) ) )
 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",
 346                          i_ck, i_offset, i_copy );
 347
 348                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 349
 350                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 351             }
 352
 353             p += i_copy;
 354
 355             if( (h&0xc0) != 0x80 )
 356             {
 357                 break;
 358             }
 359
 360 #if 0
 361             if( tk->p_frame )
 362             {
 363                 /* append data */
 364                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 365
 366                 if( (h&0xc0) == 0x80 )
 367                 {
 368                     /* last fragment */
 369                     i_copy = i_offset;
 370                     i_offset = i_len - i_offset;
 371
 372                     ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 373                     memcpy( &tk->p_frame->p_buffer[i_offset+ 8], p, i_copy );
 374                     p += i_copy;
 375
 376                     if( p_sys->i_pcr < tk->p_frame->i_dts )
 377                     {
 378                         p_sys->i_pcr = tk->p_frame->i_dts;
 379                         es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 380                                         (int64_t)p_sys->i_pcr );
 381                     }
 382                     es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 383
 384                     tk->i_frame = 0;
 385                     tk->p_frame = NULL;
 386
 387                     continue;
 388                 }
 389
 390                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 391                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 392                 break;
 393             }
 394
 395             if( (h&0xc0) != 0x00 )
 396             {
 397                 block_t *p_frame;
 398
 399                 /* not fragmented */
 400                 if( !( p_frame = block_New( p_demux, i_copy + 8 + 8 ) ) )
 401                 {
 402                     return -1;
 403                 }
 404                 p_frame->i_dts = i_pts;
 405                 p_frame->i_pts = i_pts;
 406
 407                 ((uint32_t*)p_frame->p_buffer)[0] = i_copy;
 408                 ((uint32_t*)p_frame->p_buffer)[1] = 1;
 409                 ((uint32_t*)(p_frame->p_buffer+i_copy+8))[0] = 0;
 410                 memcpy( &p_frame->p_buffer[8], p, i_copy );
 411
 412                 p += i_copy;
 413
 414                 if( p_sys->i_pcr < p_frame->i_dts )
 415                 {
 416                     p_sys->i_pcr = p_frame->i_dts;
 417                     es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 418                                     (int64_t)p_sys->i_pcr );
 419                 }
 420                 es_out_Send( p_demux->out, tk->p_es, p_frame );
 421             }
 422             else
 423             {
 424                 /* First fragment */
 425                 tk->i_frame = i_len;
 426                 if( !( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) )
 427                 {
 428                     return -1;
 429                 }
 430                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 431                 tk->p_frame->i_dts = i_pts;
 432                 tk->p_frame->i_pts = i_pts;
 433
 434                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 435                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 1;      /* chunk counts */
 436                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[0] = i_offset;
 437                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 438
 439                 break;
 440             }
 441 #endif
 442         }
 443     }
 444     else if( tk->fmt.i_cat == AUDIO_ES && b_selected )
 445     {
 446         /* Set PCR */
 447         if( p_sys->i_pcr < i_pts )
 448         {
 449             p_sys->i_pcr = i_pts;
 450             es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 451                             (int64_t)p_sys->i_pcr );
 452         }
 453
 454         if( tk->fmt.i_codec == VLC_FOURCC( 'm', 'p', '4', 'a' ) )
 455         {
 456             int     i_sub = (p_sys->buffer[1] >> 4)&0x0f;
 457             uint8_t *p_sub = &p_sys->buffer[2+2*i_sub];
 458
 459             int i;
 460             for( i = 0; i < i_sub; i++ )
 461             {
 462                 int i_sub_size = GetWBE( &p_sys->buffer[2+i*2]);
 463                 block_t *p_block = block_New( p_demux, i_sub_size );
 464                 if( p_block )
 465                 {
 466                     memcpy( p_block->p_buffer, p_sub, i_sub_size );
 467                     p_sub += i_sub_size;
 468
 469                     p_block->i_dts =
 470                     p_block->i_pts = ( i == 0 ? i_pts : 0 );
 471
 472                     es_out_Send( p_demux->out, tk->p_es, p_block );
 473                 }
 474             }
 475         }
 476         else
 477         {
 478             block_t *p_block = block_New( p_demux, i_size );
 479
 480             if( tk->fmt.i_codec == VLC_FOURCC( 'a', '5', '2', ' ' ) )
 481             {
 482                 uint8_t *src = p_sys->buffer;
 483                 uint8_t *dst = p_block->p_buffer;
 484
 485                 /* byte swap data */
 486                 while( dst < &p_block->p_buffer[i_size- 1])
 487                 {
 488                     *dst++ = src[1];
 489                     *dst++ = src[0];
 490
 491                     src += 2;
 492                 }
 493             }
 494             else
 495             {
 496                 memcpy( p_block->p_buffer, p_sys->buffer, i_size );
 497             }
 498             p_block->i_dts =
 499             p_block->i_pts = i_pts;
 500
 501             es_out_Send( p_demux->out, tk->p_es, p_block );
 502         }
 503     }
 504
 505
 506     return 1;
 507 }
 508
 509 /*****************************************************************************
 510  * Control:
 511  *****************************************************************************/
 512 static int Control( demux_t *p_demux, int i_query, va_list args )
 513 {
 514 #if 0
 515     demux_sys_t *p_sys = p_demux->p_sys;
 516     double f, *pf;
 517     int64_t i64, *pi64;
 518
 519     switch( i_query )
 520     {
 521         case DEMUX_GET_POSITION:
 522             pf = (double*) va_arg( args, double* );
 523             i64 = stream_Size( p_demux->s );
 524             if( i64 > 0 )
 525             {
 526                 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
 527             }
 528             else
 529             {
 530                 *pf = 0.0;
 531             }
 532             return VLC_SUCCESS;
 533         case DEMUX_SET_POSITION:
 534             f = (double) va_arg( args, double );
 535             i64 = stream_Size( p_demux->s );
 536
 537             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 538
 539             return stream_Seek( p_demux->s, (int64_t)(i64 * f) );
 540
 541         case DEMUX_GET_TIME:
 542             pi64 = (int64_t*)va_arg( args, int64_t * );
 543             if( p_sys->i_mux_rate > 0 )
 544             {
 545                 *pi64 = (int64_t)1000000 * ( stream_Tell( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 546                 return VLC_SUCCESS;
 547             }
 548             *pi64 = 0;
 549             return VLC_EGENERIC;
 550
 551         case DEMUX_GET_LENGTH:
 552             pi64 = (int64_t*)va_arg( args, int64_t * );
 553             if( p_sys->i_mux_rate > 0 )
 554             {
 555                 *pi64 = (int64_t)1000000 * ( stream_Size( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 556                 return VLC_SUCCESS;
 557             }
 558             *pi64 = 0;
 559             return VLC_EGENERIC;
 560
 561         case DEMUX_SET_TIME:
 562         case DEMUX_GET_FPS:
 563         default:
 564             return VLC_EGENERIC;
 565     }
 566 #endif
 567     return VLC_EGENERIC;
 568 }
 569
 570 /*****************************************************************************
 571  * HeaderRead:
 572  *****************************************************************************/
 573 static int HeaderRead( demux_t *p_demux )
 574 {
 575     demux_sys_t *p_sys = p_demux->p_sys;
 576     uint8_t header[100];    /* FIXME */
 577
 578     uint32_t    i_id;
 579     uint32_t    i_size;
 580     int64_t     i_skip;
 581     int         i_version;
 582
 583     for( ;; )
 584     {
 585         /* Read the header */
 586         if( stream_Read( p_demux->s, header, 10 ) < 10 )
 587         {
 588             return VLC_EGENERIC;
 589         }
 590         i_id        = VLC_FOURCC( header[0], header[1], header[2], header[3] );
 591         i_size      = GetDWBE( &header[4] );
 592         i_version   = GetWBE( &header[8] );
 593
 594         msg_Dbg( p_demux, "object %4.4s size=%d version=%d",
 595                  (char*)&i_id, i_size, i_version );
 596
 597         if( i_size < 10 )
 598         {
 599             msg_Dbg( p_demux, "invalid size for object %4.4s", (char*)&i_id );
 600             return VLC_EGENERIC;
 601         }
 602         i_skip = i_size - 10;
 603
 604         if( i_id == VLC_FOURCC('.','R','M','F') )
 605         {
 606             if( stream_Read( p_demux->s, header, 8 ) < 8 ) return VLC_EGENERIC;
 607             msg_Dbg( p_demux, "    - file version=0x%x num headers=%d",
 608                      GetDWBE( &header[0] ), GetDWBE( &header[4] ) );
 609
 610             i_skip -= 8;
 611         }
 612         else if( i_id == VLC_FOURCC('P','R','O','P') )
 613         {
 614             int i_flags;
 615
 616             if( stream_Read(p_demux->s, header, 40) < 40 ) 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             /* Media properties header */
 696             int  i_num;
 697             int  i_len;
 698             char *psz;
 699
 700             if( stream_Read(p_demux->s, header, 30) < 30 ) return VLC_EGENERIC;
 701             i_num = GetWBE( header );
 702             msg_Dbg( p_demux, "    - id=0x%x", i_num );
 703             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 704                      GetDWBE(&header[2]), GetDWBE(&header[6]) );
 705             msg_Dbg( p_demux, "    - max packet size=%d avg packet size=%d",
 706                      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             stream_Read( p_demux->s, header, 1 );
 713             if( ( i_len = header[0] ) > 0 )
 714             {
 715                 psz = malloc( i_len + 1 );
 716                 stream_Read( p_demux->s, psz, i_len );
 717                 psz[i_len] = '\0';
 718
 719                 msg_Dbg( p_demux, "    - name=`%s'", psz );
 720                 free( psz );
 721                 i_skip -= i_len;
 722             }
 723             i_skip--;
 724
 725             stream_Read( p_demux->s, header, 1 );
 726             if( ( i_len = header[0] ) > 0 )
 727             {
 728                 psz = malloc( i_len + 1 );
 729                 stream_Read( p_demux->s, psz, i_len );
 730                 psz[i_len] = '\0';
 731
 732                 msg_Dbg( p_demux, "    - mime=`%s'", psz );
 733                 free( psz );
 734                 i_skip -= i_len;
 735             }
 736             i_skip--;
 737
 738             stream_Read( p_demux->s, header, 4 );
 739             if( ( i_len = GetDWBE( header ) ) > 0 )
 740             {
 741                 ReadCodecSpecificData( p_demux, i_len, i_num );
 742                 stream_Read( p_demux->s, NULL, i_len );
 743
 744                 i_skip -= i_len;
 745             }
 746             i_skip -= 4;
 747         }
 748         else if( i_id == VLC_FOURCC('D','A','T','A') )
 749         {
 750             stream_Read( p_demux->s, header, 8 );
 751
 752             p_sys->i_data_offset    = stream_Tell( p_demux->s ) - 10;
 753             p_sys->i_data_size      = i_size;
 754             p_sys->i_data_packets_count = GetDWBE( header );
 755             p_sys->i_data_packets   = 0;
 756             p_sys->i_data_offset_next = GetDWBE( &header[4] );
 757
 758             msg_Dbg( p_demux, "    - packets count=%d next=%u",
 759                      p_sys->i_data_packets_count,
 760                      (uint32_t)p_sys->i_data_offset_next );
 761
 762             /* we have finished the header */
 763             break;
 764         }
 765         else
 766         {
 767             /* unknow header */
 768             msg_Dbg( p_demux, "unknown chunk" );
 769         }
 770
 771         if( i_skip < 0 ) return VLC_EGENERIC;
 772         stream_Read( p_demux->s, NULL, i_skip );
 773     }
 774
 775     /* TODO read index if possible */
 776
 777     return VLC_SUCCESS;
 778 }
 779
 780 static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
 781 {
 782     demux_sys_t *p_sys = p_demux->p_sys;
 783     es_format_t fmt;
 784     real_track_t *tk;
 785     uint8_t *p_peek;
 786
 787     msg_Dbg( p_demux, "    - specific data len=%d", i_len );
 788     if( stream_Peek(p_demux->s, &p_peek, i_len) < i_len ) return VLC_EGENERIC;
 789
 790     if( !strncmp( (char *)&p_peek[4], "VIDO", 4 ) )
 791     {
 792         es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC( p_peek[8], p_peek[9],
 793                         p_peek[10], p_peek[11] ) );
 794         fmt.video.i_width = GetWBE( &p_peek[12] );
 795         fmt.video.i_height= GetWBE( &p_peek[14] );
 796
 797         fmt.i_extra = 8;
 798         fmt.p_extra = malloc( 8 );
 799         ((uint32_t*)fmt.p_extra)[0] = GetDWBE( &p_peek[26] );
 800         ((uint32_t*)fmt.p_extra)[1] = GetDWBE( &p_peek[30] );
 801
 802         msg_Dbg( p_demux, "    - video 0x%08x 0x%08x",
 803                  ((uint32_t*)fmt.p_extra)[0], ((uint32_t*)fmt.p_extra)[1] );
 804
 805         if( GetDWBE( &p_peek[30] ) == 0x10003000 ||
 806             GetDWBE( &p_peek[30] ) == 0x10003001 )
 807         {
 808             fmt.i_codec = VLC_FOURCC( 'R','V','1','3' );
 809         }
 810         else if( GetDWBE( &p_peek[30] ) == 0x20001000 ||
 811                  GetDWBE( &p_peek[30] ) == 0x20100001 ||
 812                  GetDWBE( &p_peek[30] ) == 0x20200002 )
 813         {
 814             fmt.i_codec = VLC_FOURCC( 'R','V','2','0' );
 815         }
 816         else if( GetDWBE( &p_peek[30] ) == 0x30202002 )
 817         {
 818             fmt.i_codec = VLC_FOURCC( 'R','V','3','0' );
 819         }
 820         else if( GetDWBE( &p_peek[30] ) == 0x40000000 )
 821         {
 822             fmt.i_codec = VLC_FOURCC( 'R','V','4','0' );
 823         }
 824
 825         msg_Dbg( p_demux, "    - video %4.4s %dx%d",
 826                  (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 827
 828         tk = malloc( sizeof( real_track_t ) );
 829         tk->i_id = i_num;
 830         tk->fmt = fmt;
 831         tk->i_frame = 0;
 832         tk->p_frame = NULL;
 833         tk->p_es = es_out_Add( p_demux->out, &fmt );
 834
 835         TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 836     }
 837     else if( !strncmp( (char *)p_peek, ".ra\xfd", 4 ) )
 838     {
 839         int i_version = GetWBE( &p_peek[4] );
 840         int i_header_size, i_flavor, i_coded_frame_size, i_subpacket_h;
 841         int i_frame_size, i_subpacket_size;
 842
 843         msg_Dbg( p_demux, "    - audio version=%d", i_version );
 844
 845         p_peek += 6;
 846         es_format_Init( &fmt, AUDIO_ES, 0 );
 847
 848         if( i_version == 3 )
 849         {
 850             msg_Dbg( p_demux, "    - audio version 3 is not supported!" );
 851             return VLC_EGENERIC;
 852         }
 853
 854         p_peek += 2; /* 00 00 */
 855         p_peek += 4; /* .ra4 or .ra5 */
 856         p_peek += 4; /* ?? */
 857         p_peek += 2; /* version (4 or 5) */
 858         i_header_size = GetDWBE( p_peek ); p_peek += 4; /* header size */
 859         i_flavor = GetWBE( p_peek ); p_peek += 2; /* codec flavor */
 860         i_coded_frame_size = GetDWBE( p_peek ); p_peek += 4;
 861         p_peek += 4; /* ?? */
 862         p_peek += 4; /* ?? */
 863         p_peek += 4; /* ?? */
 864         i_subpacket_h = GetWBE( p_peek ); p_peek += 2;
 865         i_frame_size = GetWBE( p_peek ); p_peek += 2;
 866         i_subpacket_size = GetWBE( p_peek ); p_peek += 2;
 867         p_peek += 2; /* ?? */
 868
 869         if( i_version == 5 ) p_peek += 6; /* 0, srate, 0 */
 870
 871         fmt.audio.i_rate = GetWBE( p_peek ); p_peek += 2;
 872         p_peek += 2; /* ?? */
 873         fmt.audio.i_bitspersample = GetWBE( p_peek ); p_peek += 2;
 874         fmt.audio.i_channels = GetWBE( p_peek ); p_peek += 2;
 875         fmt.audio.i_blockalign = i_frame_size;
 876
 877         if( i_version == 5 )
 878         {
 879             p_peek += 4; /* genr */
 880             memcpy( (char *)&fmt.i_codec, p_peek, 4 ); p_peek += 4;
 881         }
 882         else
 883         {
 884             p_peek += p_peek[0] + 1; /* descr 1 */
 885             memcpy( (char *)&fmt.i_codec, p_peek + 1, 4 ); /* descr 2 */
 886             p_peek += p_peek[0] + 1;
 887         }
 888
 889         msg_Dbg( p_demux, "    - audio codec=%4.4s channels=%d rate=%dHz",
 890                  (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
 891
 892         p_peek += 3; /* ?? */
 893         if( i_version == 5 ) p_peek++;
 894
 895         switch( fmt.i_codec )
 896         {
 897         case VLC_FOURCC( 'd', 'n', 'e', 't' ):
 898             fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
 899             break;
 900
 901         case VLC_FOURCC( 'r', 'a', 'a', 'c' ):
 902         case VLC_FOURCC( 'r', 'a', 'c', 'p' ):
 903             fmt.i_extra = GetDWBE( p_peek ); p_peek += 4;
 904             if( fmt.i_extra > 0 ) { fmt.i_extra--; p_peek++; }
 905             if( fmt.i_extra > 0 )
 906             {
 907                 fmt.p_extra = malloc( fmt.i_extra );
 908                 memcpy( fmt.p_extra, p_peek, fmt.i_extra );
 909             }
 910
 911             fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
 912             break;
 913
 914         case VLC_FOURCC('c','o','o','k'):
 915             fmt.i_extra = GetDWBE( p_peek ); p_peek += 4;
 916             fmt.p_extra = malloc( fmt.i_extra + 10 );
 917
 918             ((short*)(fmt.p_extra))[0] = i_subpacket_size;
 919             ((short*)(fmt.p_extra))[1] = i_subpacket_h;
 920             ((short*)(fmt.p_extra))[2] = i_flavor;
 921             ((short*)(fmt.p_extra))[3] = i_coded_frame_size;
 922             ((short*)(fmt.p_extra))[4] = fmt.i_extra;
 923             if( fmt.i_extra ) memcpy( fmt.p_extra + 10, p_peek, fmt.i_extra );
 924             fmt.i_extra += 10;
 925             break;
 926
 927         default:
 928             msg_Dbg( p_demux, "    - unknown audio codec=%4.4s",
 929                      (char*)&fmt.i_codec );
 930             break;
 931         }
 932
 933         if( fmt.i_codec != 0 )
 934         {
 935             msg_Dbg( p_demux, "        - extra data=%d", fmt.i_extra );
 936
 937             tk = malloc( sizeof( real_track_t ) );
 938             tk->i_id = i_num;
 939             tk->fmt = fmt;
 940             tk->i_frame = 0;
 941             tk->p_frame = NULL;
 942             tk->p_es = es_out_Add( p_demux->out, &fmt );
 943
 944             TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 945         }
 946     }
 947
 948     return VLC_SUCCESS;
 949 }