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     int         i_subpacket_h;
  63     int         i_subpacket_size;
  64     int         i_coded_frame_size;
  65     int         i_frame_size;
  66
  67     int         i_subpacket;
  68     int         i_subpackets;
  69     block_t     **p_subpackets;
  70
  71 } real_track_t;
  72
  73 struct demux_sys_t
  74 {
  75     int64_t  i_data_offset;
  76     int64_t  i_data_size;
  77     uint32_t i_data_packets_count;
  78     uint32_t i_data_packets;
  79     int64_t  i_data_offset_next;
  80
  81     int          i_track;
  82     real_track_t **track;
  83
  84     uint8_t buffer[65536];
  85
  86     int64_t     i_pcr;
  87 };
  88
  89 static int Demux( demux_t *p_demux );
  90 static int Control( demux_t *p_demux, int i_query, va_list args );
  91
  92 static int HeaderRead( demux_t *p_demux );
  93 static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num );
  94
  95 /*****************************************************************************
  96  * Open
  97  *****************************************************************************/
  98 static int Open( vlc_object_t *p_this )
  99 {
 100     demux_t     *p_demux = (demux_t*)p_this;
 101     demux_sys_t *p_sys;
 102
 103     uint8_t     *p_peek;
 104
 105     if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 ) return VLC_EGENERIC;
 106     if( strncmp( (char *)p_peek, ".RMF", 4 ) ) return VLC_EGENERIC;
 107
 108     /* Fill p_demux field */
 109     p_demux->pf_demux = Demux;
 110     p_demux->pf_control = Control;
 111     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 112     memset( p_sys, 0, sizeof( demux_sys_t ) );
 113     p_sys->i_data_offset = 0;
 114     p_sys->i_track = 0;
 115     p_sys->track   = NULL;
 116     p_sys->i_pcr   = 1;
 117
 118
 119     /* Parse the headers */
 120     if( HeaderRead( p_demux ) )
 121     {
 122         int i;
 123         msg_Err( p_demux, "invalid header" );
 124         for( i = 0; i < p_sys->i_track; i++ )
 125         {
 126             real_track_t *tk = p_sys->track[i];
 127
 128             if( tk->p_es )
 129             {
 130                 es_out_Del( p_demux->out, tk->p_es );
 131             }
 132             free( tk );
 133         }
 134         if( p_sys->i_track > 0 )
 135         {
 136             free( p_sys->track );
 137         }
 138         free( p_sys );
 139         return VLC_EGENERIC;
 140     }
 141
 142     return VLC_SUCCESS;
 143 }
 144
 145 /*****************************************************************************
 146  * Close
 147  *****************************************************************************/
 148 static void Close( vlc_object_t *p_this )
 149 {
 150     demux_t *p_demux = (demux_t*)p_this;
 151     demux_sys_t *p_sys = p_demux->p_sys;
 152     int i;
 153
 154     for( i = 0; i < p_sys->i_track; i++ )
 155     {
 156         real_track_t *tk = p_sys->track[i];
 157
 158         if( tk->p_frame ) block_Release( tk->p_frame );
 159         es_format_Clean( &tk->fmt );
 160
 161         while(  tk->i_subpackets-- )
 162         {
 163             if( tk->p_subpackets[tk->i_subpackets] )
 164                 block_Release( tk->p_subpackets[tk->i_subpackets] );
 165             if( !tk->i_subpackets ) free( tk->p_subpackets );
 166         }
 167
 168         free( tk );
 169     }
 170
 171     if( p_sys->i_track > 0 ) free( p_sys->track );
 172     free( p_sys );
 173 }
 174
 175
 176 /*****************************************************************************
 177  * Demux:
 178  *****************************************************************************/
 179 static int Demux( demux_t *p_demux )
 180 {
 181     demux_sys_t *p_sys = p_demux->p_sys;
 182     uint8_t     header[18];
 183     int         i_size;
 184     int         i_id;
 185     int64_t     i_pts;
 186     int         i;
 187     real_track_t *tk = NULL;
 188     vlc_bool_t  b_selected;
 189
 190     if( p_sys->i_data_packets >= p_sys->i_data_packets_count &&
 191         p_sys->i_data_packets_count )
 192     {
 193         if( stream_Read( p_demux->s, header, 18 ) < 18 )
 194         {
 195             return 0;
 196         }
 197         if( strncmp( (char *)header, "DATA", 4 ) )
 198         {
 199             return 0;
 200         }
 201         p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
 202         p_sys->i_data_size   = GetDWBE( &header[4] );
 203         p_sys->i_data_packets_count = GetDWBE( &header[10] );
 204         p_sys->i_data_packets = 0;
 205         p_sys->i_data_offset_next = GetDWBE( &header[14] );
 206
 207         msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
 208                  p_sys->i_data_packets_count,
 209                  (uint32_t)p_sys->i_data_offset_next );
 210     }
 211
 212     if( stream_Read( p_demux->s, header, 12 ) < 12 ) return 0;
 213
 214     i_size = GetWBE( &header[2] ) - 12;
 215     i_id   = GetWBE( &header[4] );
 216     i_pts  = 1000 * GetDWBE( &header[6] );
 217     i_pts += 1000; /* Avoid 0 pts */
 218
 219     /* header[11] -> flags 0x02 -> keyframe */
 220
 221 #if 0
 222     msg_Dbg( p_demux, "packet %d size=%d id=%d pts=%u",
 223              p_sys->i_data_packets, i_size, i_id, (uint32_t)(i_pts/1000) );
 224 #endif
 225
 226     p_sys->i_data_packets++;
 227
 228     stream_Read( p_demux->s, p_sys->buffer, i_size );
 229
 230     for( i = 0; i < p_sys->i_track; i++ )
 231     {
 232         if( p_sys->track[i]->i_id == i_id ) tk = p_sys->track[i];
 233     }
 234
 235     if( tk == NULL )
 236     {
 237         msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
 238         return 1;
 239     }
 240     es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b_selected );
 241
 242     if( tk->fmt.i_cat == VIDEO_ES && b_selected )
 243     {
 244         uint8_t *p = p_sys->buffer;
 245
 246         while( p < &p_sys->buffer[i_size - 2] )
 247         {
 248             uint8_t h = *p++;
 249             int     i_len = 0;
 250             int     i_copy;
 251             int     i_subseq = 0;
 252             int     i_seqnum = 0;
 253             int     i_offset = 0;
 254
 255             if( (h&0xc0) == 0x40 )
 256             {
 257                 /* Short header */
 258                 p++;
 259                 i_len = &p_sys->buffer[i_size] - p;
 260             }
 261             else
 262             {
 263                 if( (h&0x40) == 0 )
 264                 {
 265                     i_subseq = (*p++)&0x7f;
 266                 }
 267                 i_len = (p[0] << 8)|p[1]; p += 2;
 268                 if( (i_len&0xc000) == 0 )
 269                 {
 270                     i_len <<= 16;
 271                     i_len |= (p[0] << 8)|p[1]; p += 2;
 272                     i_len &= 0x3fffffff;
 273                 }
 274                 else
 275                 {
 276                     i_len &= 0x3fff;
 277                 }
 278
 279                 i_offset = (p[0] << 8)|p[1]; p += 2;
 280                 if( (i_offset&0xc000) == 0 )
 281                 {
 282                     i_offset <<= 16;
 283                     i_offset |= (p[0] << 8)|p[1]; p += 2;
 284                     i_offset &= 0x3fffffff;
 285                 }
 286                 else
 287                 {
 288                     i_offset &= 0x3fff;
 289                 }
 290                 i_seqnum = *p++;
 291             }
 292
 293             i_copy = i_len - i_offset;
 294             if( i_copy > &p_sys->buffer[i_size] - p )
 295             {
 296                 i_copy = &p_sys->buffer[i_size] - p;
 297             }
 298             else if( i_copy < 0 )
 299             {
 300                 break;
 301             }
 302
 303             msg_Dbg( p_demux, "    - len=%d offset=%d size=%d subseq=%d seqnum=%d",
 304                      i_len, i_offset, i_copy, i_subseq, i_seqnum );
 305
 306             if( (h&0xc0) == 0x80 )
 307             {
 308                 /* last fragment -> fixes */
 309                 i_copy = i_offset;
 310                 i_offset = i_len - i_copy;
 311                 msg_Dbg( p_demux, "last fixing copy=%d offset=%d",
 312                          i_copy, i_offset );
 313             }
 314
 315             if( tk->p_frame &&
 316                 ( tk->p_frame->i_dts != i_pts ||
 317                   tk->i_frame != i_len ) )
 318             {
 319                 msg_Dbg( p_demux, "sending size=%d", tk->p_frame->i_buffer );
 320
 321                 if( p_sys->i_pcr < tk->p_frame->i_dts )
 322                 {
 323                     p_sys->i_pcr = tk->p_frame->i_dts;
 324
 325                     es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 326                                     (int64_t)p_sys->i_pcr );
 327                 }
 328                 es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 329
 330                 tk->i_frame = 0;
 331                 tk->p_frame = NULL;
 332             }
 333
 334             if( (h&0xc0) != 0x80 && (h&0xc0) != 0x00 && !tk->p_frame )
 335             {
 336                 /* no fragment */
 337                 i_len = i_copy;
 338                 i_offset = 0;
 339             }
 340
 341
 342             if( tk->p_frame == NULL )
 343             {
 344                 msg_Dbg( p_demux, "new frame size=%d", i_len );
 345                 tk->i_frame = i_len;
 346                 if( !( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) )
 347                 {
 348                     return -1;
 349                 }
 350                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 351                 tk->p_frame->i_dts = i_pts;
 352                 tk->p_frame->i_pts = i_pts;
 353
 354                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 355                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 0;      /* chunk counts */
 356             }
 357
 358             if( i_offset < tk->i_frame)
 359             {
 360                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 361
 362                 msg_Dbg( p_demux, "copying new buffer n=%d offset=%d copy=%d",
 363                          i_ck, i_offset, i_copy );
 364
 365                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 366
 367                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 368             }
 369
 370             p += i_copy;
 371
 372             if( (h&0xc0) != 0x80 )
 373             {
 374                 break;
 375             }
 376
 377 #if 0
 378             if( tk->p_frame )
 379             {
 380                 /* append data */
 381                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 382
 383                 if( (h&0xc0) == 0x80 )
 384                 {
 385                     /* last fragment */
 386                     i_copy = i_offset;
 387                     i_offset = i_len - i_offset;
 388
 389                     ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 390                     memcpy( &tk->p_frame->p_buffer[i_offset+ 8], p, i_copy );
 391                     p += i_copy;
 392
 393                     if( p_sys->i_pcr < tk->p_frame->i_dts )
 394                     {
 395                         p_sys->i_pcr = tk->p_frame->i_dts;
 396                         es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 397                                         (int64_t)p_sys->i_pcr );
 398                     }
 399                     es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 400
 401                     tk->i_frame = 0;
 402                     tk->p_frame = NULL;
 403
 404                     continue;
 405                 }
 406
 407                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 408                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 409                 break;
 410             }
 411
 412             if( (h&0xc0) != 0x00 )
 413             {
 414                 block_t *p_frame;
 415
 416                 /* not fragmented */
 417                 if( !( p_frame = block_New( p_demux, i_copy + 8 + 8 ) ) )
 418                 {
 419                     return -1;
 420                 }
 421                 p_frame->i_dts = i_pts;
 422                 p_frame->i_pts = i_pts;
 423
 424                 ((uint32_t*)p_frame->p_buffer)[0] = i_copy;
 425                 ((uint32_t*)p_frame->p_buffer)[1] = 1;
 426                 ((uint32_t*)(p_frame->p_buffer+i_copy+8))[0] = 0;
 427                 memcpy( &p_frame->p_buffer[8], p, i_copy );
 428
 429                 p += i_copy;
 430
 431                 if( p_sys->i_pcr < p_frame->i_dts )
 432                 {
 433                     p_sys->i_pcr = p_frame->i_dts;
 434                     es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 435                                     (int64_t)p_sys->i_pcr );
 436                 }
 437                 es_out_Send( p_demux->out, tk->p_es, p_frame );
 438             }
 439             else
 440             {
 441                 /* First fragment */
 442                 tk->i_frame = i_len;
 443                 if( !( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) )
 444                 {
 445                     return -1;
 446                 }
 447                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 448                 tk->p_frame->i_dts = i_pts;
 449                 tk->p_frame->i_pts = i_pts;
 450
 451                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 452                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 1;      /* chunk counts */
 453                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[0] = i_offset;
 454                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 455
 456                 break;
 457             }
 458 #endif
 459         }
 460     }
 461     else if( tk->fmt.i_cat == AUDIO_ES && b_selected )
 462     {
 463         /* Set PCR */
 464         if( p_sys->i_pcr < i_pts )
 465         {
 466             p_sys->i_pcr = i_pts;
 467             es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 468                             (int64_t)p_sys->i_pcr );
 469         }
 470
 471         if( tk->fmt.i_codec == VLC_FOURCC( 'm', 'p', '4', 'a' ) )
 472         {
 473             int     i_sub = (p_sys->buffer[1] >> 4)&0x0f;
 474             uint8_t *p_sub = &p_sys->buffer[2+2*i_sub];
 475
 476             int i;
 477             for( i = 0; i < i_sub; i++ )
 478             {
 479                 int i_sub_size = GetWBE( &p_sys->buffer[2+i*2]);
 480                 block_t *p_block = block_New( p_demux, i_sub_size );
 481                 if( p_block )
 482                 {
 483                     memcpy( p_block->p_buffer, p_sub, i_sub_size );
 484                     p_sub += i_sub_size;
 485
 486                     p_block->i_dts =
 487                     p_block->i_pts = ( i == 0 ? i_pts : 0 );
 488
 489                     es_out_Send( p_demux->out, tk->p_es, p_block );
 490                 }
 491             }
 492         }
 493         else if( tk->fmt.i_codec == VLC_FOURCC( 'c', 'o', 'o', 'k' ) )
 494         {
 495             uint8_t *p_buf = p_sys->buffer;
 496             int h = tk->i_subpacket_h;
 497             int y = tk->i_subpacket / (tk->i_frame_size /tk->i_subpacket_size);
 498             int i;
 499
 500
 501             for( i = 0; i < tk->i_frame_size / tk->i_subpacket_size; i++ )
 502             {
 503                 block_t *p_block = block_New( p_demux, tk->i_subpacket_size );
 504                 memcpy( p_block->p_buffer, p_buf, tk->i_subpacket_size );
 505                 p_buf += tk->i_subpacket_size;
 506
 507                 p_block->i_dts = p_block->i_pts = i_pts;
 508                 tk->p_subpackets[(h*i+((h+1)/2)*(y&1)+(y>>1))] = p_block;
 509                 tk->i_subpacket++;
 510             }
 511
 512             if( tk->i_subpacket == tk->i_subpackets )
 513             {
 514                 for( i = 0; i < tk->i_subpackets; i++ )
 515                 {
 516                     block_t *p_block = tk->p_subpackets[i];
 517                     tk->p_subpackets[i] = 0;
 518
 519                     if( i ) p_block->i_dts = p_block->i_pts = 0;
 520                     es_out_Send( p_demux->out, tk->p_es, p_block );
 521                 }
 522                 tk->i_subpacket = 0;
 523             }
 524         }
 525         else
 526         {
 527             block_t *p_block = block_New( p_demux, i_size );
 528
 529             if( tk->fmt.i_codec == VLC_FOURCC( 'a', '5', '2', ' ' ) )
 530             {
 531                 uint8_t *src = p_sys->buffer;
 532                 uint8_t *dst = p_block->p_buffer;
 533
 534                 /* byte swap data */
 535                 while( dst < &p_block->p_buffer[i_size- 1])
 536                 {
 537                     *dst++ = src[1];
 538                     *dst++ = src[0];
 539
 540                     src += 2;
 541                 }
 542             }
 543             else
 544             {
 545                 memcpy( p_block->p_buffer, p_sys->buffer, i_size );
 546             }
 547             p_block->i_dts = p_block->i_pts = i_pts;
 548             es_out_Send( p_demux->out, tk->p_es, p_block );
 549         }
 550     }
 551
 552
 553     return 1;
 554 }
 555
 556 /*****************************************************************************
 557  * Control:
 558  *****************************************************************************/
 559 static int Control( demux_t *p_demux, int i_query, va_list args )
 560 {
 561 #if 0
 562     demux_sys_t *p_sys = p_demux->p_sys;
 563     double f, *pf;
 564     int64_t i64, *pi64;
 565
 566     switch( i_query )
 567     {
 568         case DEMUX_GET_POSITION:
 569             pf = (double*) va_arg( args, double* );
 570             i64 = stream_Size( p_demux->s );
 571             if( i64 > 0 )
 572             {
 573                 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
 574             }
 575             else
 576             {
 577                 *pf = 0.0;
 578             }
 579             return VLC_SUCCESS;
 580         case DEMUX_SET_POSITION:
 581             f = (double) va_arg( args, double );
 582             i64 = stream_Size( p_demux->s );
 583
 584             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 585
 586             return stream_Seek( p_demux->s, (int64_t)(i64 * f) );
 587
 588         case DEMUX_GET_TIME:
 589             pi64 = (int64_t*)va_arg( args, int64_t * );
 590             if( p_sys->i_mux_rate > 0 )
 591             {
 592                 *pi64 = (int64_t)1000000 * ( stream_Tell( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 593                 return VLC_SUCCESS;
 594             }
 595             *pi64 = 0;
 596             return VLC_EGENERIC;
 597
 598         case DEMUX_GET_LENGTH:
 599             pi64 = (int64_t*)va_arg( args, int64_t * );
 600             if( p_sys->i_mux_rate > 0 )
 601             {
 602                 *pi64 = (int64_t)1000000 * ( stream_Size( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 603                 return VLC_SUCCESS;
 604             }
 605             *pi64 = 0;
 606             return VLC_EGENERIC;
 607
 608         case DEMUX_SET_TIME:
 609         case DEMUX_GET_FPS:
 610         default:
 611             return VLC_EGENERIC;
 612     }
 613 #endif
 614     return VLC_EGENERIC;
 615 }
 616
 617 /*****************************************************************************
 618  * HeaderRead:
 619  *****************************************************************************/
 620 static int HeaderRead( demux_t *p_demux )
 621 {
 622     demux_sys_t *p_sys = p_demux->p_sys;
 623     uint8_t header[100];    /* FIXME */
 624
 625     uint32_t    i_id;
 626     uint32_t    i_size;
 627     int64_t     i_skip;
 628     int         i_version;
 629
 630     for( ;; )
 631     {
 632         /* Read the header */
 633         if( stream_Read( p_demux->s, header, 10 ) < 10 )
 634         {
 635             return VLC_EGENERIC;
 636         }
 637         i_id        = VLC_FOURCC( header[0], header[1], header[2], header[3] );
 638         i_size      = GetDWBE( &header[4] );
 639         i_version   = GetWBE( &header[8] );
 640
 641         msg_Dbg( p_demux, "object %4.4s size=%d version=%d",
 642                  (char*)&i_id, i_size, i_version );
 643
 644         if( i_size < 10 )
 645         {
 646             msg_Dbg( p_demux, "invalid size for object %4.4s", (char*)&i_id );
 647             return VLC_EGENERIC;
 648         }
 649         i_skip = i_size - 10;
 650
 651         if( i_id == VLC_FOURCC('.','R','M','F') )
 652         {
 653             if( stream_Read( p_demux->s, header, 8 ) < 8 ) return VLC_EGENERIC;
 654             msg_Dbg( p_demux, "    - file version=0x%x num headers=%d",
 655                      GetDWBE( &header[0] ), GetDWBE( &header[4] ) );
 656
 657             i_skip -= 8;
 658         }
 659         else if( i_id == VLC_FOURCC('P','R','O','P') )
 660         {
 661             int i_flags;
 662
 663             if( stream_Read(p_demux->s, header, 40) < 40 ) return VLC_EGENERIC;
 664
 665             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 666                      GetDWBE(&header[0]), GetDWBE(&header[4]) );
 667             msg_Dbg( p_demux, "    - max packet size=%d avg bitrate=%d",
 668                      GetDWBE(&header[8]), GetDWBE(&header[12]) );
 669             msg_Dbg( p_demux, "    - packets count=%d", GetDWBE(&header[16]) );
 670             msg_Dbg( p_demux, "    - duration=%d ms", GetDWBE(&header[20]) );
 671             msg_Dbg( p_demux, "    - preroll=%d ms", GetDWBE(&header[24]) );
 672             msg_Dbg( p_demux, "    - index offset=%d", GetDWBE(&header[28]) );
 673             msg_Dbg( p_demux, "    - data offset=%d", GetDWBE(&header[32]) );
 674             msg_Dbg( p_demux, "    - num streams=%d", GetWBE(&header[36]) );
 675             i_flags = GetWBE(&header[38]);
 676             msg_Dbg( p_demux, "    - flags=0x%x %s%s%s",
 677                      i_flags,
 678                      i_flags&0x0001 ? "PN_SAVE_ENABLED " : "",
 679                      i_flags&0x0002 ? "PN_PERFECT_PLAY_ENABLED " : "",
 680                      i_flags&0x0004 ? "PN_LIVE_BROADCAST" : "" );
 681             i_skip -= 40;
 682         }
 683         else if( i_id == VLC_FOURCC('C','O','N','T') )
 684         {
 685             int i_len;
 686             char *psz;
 687
 688             stream_Read( p_demux->s, header, 2 );
 689             if( ( i_len = GetWBE( header ) ) > 0 )
 690             {
 691                 psz = malloc( i_len + 1 );
 692                 stream_Read( p_demux->s, psz, i_len );
 693                 psz[i_len] = '\0';
 694
 695                 msg_Dbg( p_demux, "    - title=`%s'", psz );
 696                 free( psz );
 697                 i_skip -= i_len;
 698             }
 699             i_skip -= 2;
 700
 701             stream_Read( p_demux->s, header, 2 );
 702             if( ( i_len = GetWBE( header ) ) > 0 )
 703             {
 704                 psz = malloc( i_len + 1 );
 705                 stream_Read( p_demux->s, psz, i_len );
 706                 psz[i_len] = '\0';
 707
 708                 msg_Dbg( p_demux, "    - author=`%s'", psz );
 709                 free( psz );
 710                 i_skip -= i_len;
 711             }
 712             i_skip -= 2;
 713
 714             stream_Read( p_demux->s, header, 2 );
 715             if( ( i_len = GetWBE( header ) ) > 0 )
 716             {
 717                 psz = malloc( i_len + 1 );
 718                 stream_Read( p_demux->s, psz, i_len );
 719                 psz[i_len] = '\0';
 720
 721                 msg_Dbg( p_demux, "    - copyright=`%s'", psz );
 722                 free( psz );
 723                 i_skip -= i_len;
 724             }
 725             i_skip -= 2;
 726
 727             stream_Read( p_demux->s, header, 2 );
 728             if( ( i_len = GetWBE( header ) ) > 0 )
 729             {
 730                 psz = malloc( i_len + 1 );
 731                 stream_Read( p_demux->s, psz, i_len );
 732                 psz[i_len] = '\0';
 733
 734                 msg_Dbg( p_demux, "    - comment=`%s'", psz );
 735                 free( psz );
 736                 i_skip -= i_len;
 737             }
 738             i_skip -= 2;
 739         }
 740         else if( i_id == VLC_FOURCC('M','D','P','R') )
 741         {
 742             /* Media properties header */
 743             int  i_num;
 744             int  i_len;
 745             char *psz;
 746
 747             if( stream_Read(p_demux->s, header, 30) < 30 ) return VLC_EGENERIC;
 748             i_num = GetWBE( header );
 749             msg_Dbg( p_demux, "    - id=0x%x", i_num );
 750             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 751                      GetDWBE(&header[2]), GetDWBE(&header[6]) );
 752             msg_Dbg( p_demux, "    - max packet size=%d avg packet size=%d",
 753                      GetDWBE(&header[10]), GetDWBE(&header[14]) );
 754             msg_Dbg( p_demux, "    - start time=%d", GetDWBE(&header[18]) );
 755             msg_Dbg( p_demux, "    - preroll=%d", GetDWBE(&header[22]) );
 756             msg_Dbg( p_demux, "    - duration=%d", GetDWBE(&header[26]) );
 757             i_skip -= 30;
 758
 759             stream_Read( p_demux->s, header, 1 );
 760             if( ( i_len = header[0] ) > 0 )
 761             {
 762                 psz = malloc( i_len + 1 );
 763                 stream_Read( p_demux->s, psz, i_len );
 764                 psz[i_len] = '\0';
 765
 766                 msg_Dbg( p_demux, "    - name=`%s'", psz );
 767                 free( psz );
 768                 i_skip -= i_len;
 769             }
 770             i_skip--;
 771
 772             stream_Read( p_demux->s, header, 1 );
 773             if( ( i_len = header[0] ) > 0 )
 774             {
 775                 psz = malloc( i_len + 1 );
 776                 stream_Read( p_demux->s, psz, i_len );
 777                 psz[i_len] = '\0';
 778
 779                 msg_Dbg( p_demux, "    - mime=`%s'", psz );
 780                 free( psz );
 781                 i_skip -= i_len;
 782             }
 783             i_skip--;
 784
 785             stream_Read( p_demux->s, header, 4 );
 786             if( ( i_len = GetDWBE( header ) ) > 0 )
 787             {
 788                 ReadCodecSpecificData( p_demux, i_len, i_num );
 789                 stream_Read( p_demux->s, NULL, i_len );
 790
 791                 i_skip -= i_len;
 792             }
 793             i_skip -= 4;
 794         }
 795         else if( i_id == VLC_FOURCC('D','A','T','A') )
 796         {
 797             stream_Read( p_demux->s, header, 8 );
 798
 799             p_sys->i_data_offset    = stream_Tell( p_demux->s ) - 10;
 800             p_sys->i_data_size      = i_size;
 801             p_sys->i_data_packets_count = GetDWBE( header );
 802             p_sys->i_data_packets   = 0;
 803             p_sys->i_data_offset_next = GetDWBE( &header[4] );
 804
 805             msg_Dbg( p_demux, "    - packets count=%d next=%u",
 806                      p_sys->i_data_packets_count,
 807                      (uint32_t)p_sys->i_data_offset_next );
 808
 809             /* we have finished the header */
 810             break;
 811         }
 812         else
 813         {
 814             /* unknow header */
 815             msg_Dbg( p_demux, "unknown chunk" );
 816         }
 817
 818         if( i_skip < 0 ) return VLC_EGENERIC;
 819         stream_Read( p_demux->s, NULL, i_skip );
 820     }
 821
 822     /* TODO read index if possible */
 823
 824     return VLC_SUCCESS;
 825 }
 826
 827 static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
 828 {
 829     demux_sys_t *p_sys = p_demux->p_sys;
 830     es_format_t fmt;
 831     real_track_t *tk;
 832     uint8_t *p_peek;
 833
 834     msg_Dbg( p_demux, "    - specific data len=%d", i_len );
 835     if( stream_Peek(p_demux->s, &p_peek, i_len) < i_len ) return VLC_EGENERIC;
 836
 837     if( !strncmp( (char *)&p_peek[4], "VIDO", 4 ) )
 838     {
 839         es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC( p_peek[8], p_peek[9],
 840                         p_peek[10], p_peek[11] ) );
 841         fmt.video.i_width = GetWBE( &p_peek[12] );
 842         fmt.video.i_height= GetWBE( &p_peek[14] );
 843
 844         fmt.i_extra = 8;
 845         fmt.p_extra = malloc( 8 );
 846         ((uint32_t*)fmt.p_extra)[0] = GetDWBE( &p_peek[26] );
 847         ((uint32_t*)fmt.p_extra)[1] = GetDWBE( &p_peek[30] );
 848
 849         msg_Dbg( p_demux, "    - video 0x%08x 0x%08x",
 850                  ((uint32_t*)fmt.p_extra)[0], ((uint32_t*)fmt.p_extra)[1] );
 851
 852         if( GetDWBE( &p_peek[30] ) == 0x10003000 ||
 853             GetDWBE( &p_peek[30] ) == 0x10003001 )
 854         {
 855             fmt.i_codec = VLC_FOURCC( 'R','V','1','3' );
 856         }
 857         else if( GetDWBE( &p_peek[30] ) == 0x20001000 ||
 858                  GetDWBE( &p_peek[30] ) == 0x20100001 ||
 859                  GetDWBE( &p_peek[30] ) == 0x20200002 )
 860         {
 861             fmt.i_codec = VLC_FOURCC( 'R','V','2','0' );
 862         }
 863         else if( GetDWBE( &p_peek[30] ) == 0x30202002 )
 864         {
 865             fmt.i_codec = VLC_FOURCC( 'R','V','3','0' );
 866         }
 867         else if( GetDWBE( &p_peek[30] ) == 0x40000000 )
 868         {
 869             fmt.i_codec = VLC_FOURCC( 'R','V','4','0' );
 870         }
 871
 872         msg_Dbg( p_demux, "    - video %4.4s %dx%d",
 873                  (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 874
 875         tk = malloc( sizeof( real_track_t ) );
 876         tk->i_id = i_num;
 877         tk->fmt = fmt;
 878         tk->i_frame = 0;
 879         tk->p_frame = NULL;
 880         tk->p_es = es_out_Add( p_demux->out, &fmt );
 881
 882         TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 883     }
 884     else if( !strncmp( (char *)p_peek, ".ra\xfd", 4 ) )
 885     {
 886         int i_version = GetWBE( &p_peek[4] );
 887         int i_header_size, i_flavor, i_coded_frame_size, i_subpacket_h;
 888         int i_frame_size, i_subpacket_size;
 889
 890         msg_Dbg( p_demux, "    - audio version=%d", i_version );
 891
 892         p_peek += 6;
 893         es_format_Init( &fmt, AUDIO_ES, 0 );
 894
 895         if( i_version == 3 )
 896         {
 897             msg_Dbg( p_demux, "    - audio version 3 is not supported!" );
 898             return VLC_EGENERIC;
 899         }
 900
 901         p_peek += 2; /* 00 00 */
 902         p_peek += 4; /* .ra4 or .ra5 */
 903         p_peek += 4; /* ?? */
 904         p_peek += 2; /* version (4 or 5) */
 905         i_header_size = GetDWBE( p_peek ); p_peek += 4; /* header size */
 906         i_flavor = GetWBE( p_peek ); p_peek += 2; /* codec flavor */
 907         i_coded_frame_size = GetDWBE( p_peek ); p_peek += 4;
 908         p_peek += 4; /* ?? */
 909         p_peek += 4; /* ?? */
 910         p_peek += 4; /* ?? */
 911         i_subpacket_h = GetWBE( p_peek ); p_peek += 2;
 912         i_frame_size = GetWBE( p_peek ); p_peek += 2;
 913         i_subpacket_size = GetWBE( p_peek ); p_peek += 2;
 914         p_peek += 2; /* ?? */
 915
 916         if( i_version == 5 ) p_peek += 6; /* 0, srate, 0 */
 917
 918         fmt.audio.i_rate = GetWBE( p_peek ); p_peek += 2;
 919         p_peek += 2; /* ?? */
 920         fmt.audio.i_bitspersample = GetWBE( p_peek ); p_peek += 2;
 921         fmt.audio.i_channels = GetWBE( p_peek ); p_peek += 2;
 922         fmt.audio.i_blockalign = i_frame_size;
 923
 924         if( i_version == 5 )
 925         {
 926             p_peek += 4; /* genr */
 927             memcpy( (char *)&fmt.i_codec, p_peek, 4 ); p_peek += 4;
 928         }
 929         else
 930         {
 931             p_peek += p_peek[0] + 1; /* descr 1 */
 932             memcpy( (char *)&fmt.i_codec, p_peek + 1, 4 ); /* descr 2 */
 933             p_peek += p_peek[0] + 1;
 934         }
 935
 936         msg_Dbg( p_demux, "    - audio codec=%4.4s channels=%d rate=%dHz",
 937                  (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
 938
 939         p_peek += 3; /* ?? */
 940         if( i_version == 5 ) p_peek++;
 941
 942         switch( fmt.i_codec )
 943         {
 944         case VLC_FOURCC( 'd', 'n', 'e', 't' ):
 945             fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
 946             break;
 947
 948         case VLC_FOURCC( 'r', 'a', 'a', 'c' ):
 949         case VLC_FOURCC( 'r', 'a', 'c', 'p' ):
 950             fmt.i_extra = GetDWBE( p_peek ); p_peek += 4;
 951             if( fmt.i_extra > 0 ) { fmt.i_extra--; p_peek++; }
 952             if( fmt.i_extra > 0 )
 953             {
 954                 fmt.p_extra = malloc( fmt.i_extra );
 955                 memcpy( fmt.p_extra, p_peek, fmt.i_extra );
 956             }
 957
 958             fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
 959             break;
 960
 961         case VLC_FOURCC('c','o','o','k'):
 962             fmt.audio.i_blockalign = i_subpacket_size;
 963             if( !(fmt.i_extra = GetDWBE( p_peek )) ) break;
 964             fmt.p_extra = malloc( fmt.i_extra );
 965             memcpy( fmt.p_extra, p_peek + 4, fmt.i_extra );
 966             break;
 967
 968         default:
 969             msg_Dbg( p_demux, "    - unknown audio codec=%4.4s",
 970                      (char*)&fmt.i_codec );
 971             break;
 972         }
 973
 974         if( fmt.i_codec != 0 )
 975         {
 976             msg_Dbg( p_demux, "        - extra data=%d", fmt.i_extra );
 977
 978             tk = malloc( sizeof( real_track_t ) );
 979             tk->i_id = i_num;
 980             tk->fmt = fmt;
 981             tk->i_frame = 0;
 982             tk->p_frame = NULL;
 983
 984             tk->i_subpacket_h = i_subpacket_h;
 985             tk->i_subpacket_size = i_subpacket_size;
 986             tk->i_coded_frame_size = i_coded_frame_size;
 987             tk->i_frame_size = i_frame_size;
 988
 989             tk->i_subpacket = 0;
 990             tk->i_subpackets = 0;
 991             tk->p_subpackets = NULL;
 992             if( fmt.i_codec == VLC_FOURCC('c','o','o','k') )
 993             {
 994                 int i;
 995
 996                 tk->i_subpackets =
 997                     i_subpacket_h * i_frame_size / tk->i_subpacket_size;
 998                 tk->p_subpackets =
 999                     malloc( tk->i_subpackets * sizeof(block_t *) );
1000
1001                 for( i = 0; i < tk->i_subpackets; i++ )
1002                     tk->p_subpackets[i] = NULL;
1003             }
1004
1005             tk->p_es = es_out_Add( p_demux->out, &fmt );
1006
1007             TAB_APPEND( p_sys->i_track, p_sys->track, tk );
1008         }
1009     }
1010
1011     return VLC_SUCCESS;
1012 }