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