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

   1 /*****************************************************************************
   2  * real.c: Real demuxer.
   3  *****************************************************************************
   4  * Copyright (C) 2004, 2006-2007 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <vlc/vlc.h>
  28
  29
  30 #include <vlc_demux.h>
  31 #include <vlc_charset.h>
  32 #include <vlc_meta.h>
  33
  34 /*****************************************************************************
  35  * Module descriptor
  36  *****************************************************************************/
  37 static int  Open    ( vlc_object_t * );
  38 static void Close  ( vlc_object_t * );
  39
  40 vlc_module_begin();
  41     set_description( _("Real demuxer" ) );
  42     set_capability( "demux2", 15 );
  43     set_category( CAT_INPUT );
  44     set_subcategory( SUBCAT_INPUT_DEMUX );
  45     set_callbacks( Open, Close );
  46     add_shortcut( "real" );
  47     add_shortcut( "rm" );
  48 vlc_module_end();
  49
  50 /*****************************************************************************
  51  * Local prototypes
  52  *****************************************************************************/
  53
  54 typedef struct
  55 {
  56     int         i_id;
  57     es_format_t fmt;
  58
  59     es_out_id_t *p_es;
  60
  61     int         i_frame;
  62     block_t     *p_frame;
  63
  64     int         i_subpacket_h;
  65     int         i_subpacket_size;
  66     int         i_coded_frame_size;
  67     int         i_frame_size;
  68
  69     int         i_subpacket;
  70     int         i_subpackets;
  71     block_t     **p_subpackets;
  72     int         i_out_subpacket;
  73
  74 } real_track_t;
  75
  76 struct demux_sys_t
  77 {
  78     int64_t  i_data_offset;
  79     int64_t  i_data_size;
  80     uint32_t i_data_packets_count;
  81     uint32_t i_data_packets;
  82     int64_t  i_data_offset_next;
  83
  84     int  i_our_duration;
  85     int  i_mux_rate;
  86
  87     char* psz_title;
  88     char* psz_artist;
  89     char* psz_copyright;
  90     char* psz_description;
  91
  92     int          i_track;
  93     real_track_t **track;
  94
  95     uint8_t buffer[65536];
  96
  97     int64_t     i_pcr;
  98 };
  99
 100 static int Demux( demux_t *p_demux );
 101 static int Control( demux_t *p_demux, int i_query, va_list args );
 102
 103 static int HeaderRead( demux_t *p_demux );
 104 static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num );
 105
 106 /*****************************************************************************
 107  * Open
 108  *****************************************************************************/
 109 static int Open( vlc_object_t *p_this )
 110 {
 111     demux_t     *p_demux = (demux_t*)p_this;
 112     demux_sys_t *p_sys;
 113
 114     const uint8_t *p_peek;
 115
 116     if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 ) return VLC_EGENERIC;
 117     if( memcmp( p_peek, ".RMF", 4 ) ) return VLC_EGENERIC;
 118
 119     /* Fill p_demux field */
 120     p_demux->pf_demux = Demux;
 121     p_demux->pf_control = Control;
 122     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 123     memset( p_sys, 0, sizeof( demux_sys_t ) );
 124     p_sys->i_data_offset = 0;
 125     p_sys->i_track = 0;
 126     p_sys->track   = NULL;
 127     p_sys->i_pcr   = 1;
 128
 129
 130     /* Parse the headers */
 131     if( HeaderRead( p_demux ) )
 132     {
 133         int i;
 134         msg_Err( p_demux, "invalid header" );
 135         for( i = 0; i < p_sys->i_track; i++ )
 136         {
 137             real_track_t *tk = p_sys->track[i];
 138
 139             if( tk->p_es )
 140             {
 141                 es_out_Del( p_demux->out, tk->p_es );
 142             }
 143             free( tk );
 144         }
 145         if( p_sys->i_track > 0 )
 146         {
 147             free( p_sys->track );
 148         }
 149         free( p_sys );
 150         return VLC_EGENERIC;
 151     }
 152
 153     return VLC_SUCCESS;
 154 }
 155
 156 /*****************************************************************************
 157  * Close
 158  *****************************************************************************/
 159 static void Close( vlc_object_t *p_this )
 160 {
 161     demux_t *p_demux = (demux_t*)p_this;
 162     demux_sys_t *p_sys = p_demux->p_sys;
 163     int i;
 164
 165     for( i = 0; i < p_sys->i_track; i++ )
 166     {
 167         real_track_t *tk = p_sys->track[i];
 168         int j = tk->i_subpackets;
 169
 170         if( tk->p_frame ) block_Release( tk->p_frame );
 171         es_format_Clean( &tk->fmt );
 172
 173         while(  j-- )
 174         {
 175             if( tk->p_subpackets[ j ] )
 176                 block_Release( tk->p_subpackets[ j ] );
 177         }
 178         if( tk->i_subpackets ) free( tk->p_subpackets );
 179
 180         free( tk );
 181     }
 182
 183     if( p_sys->psz_title ) free( p_sys->psz_title );
 184     if( p_sys->psz_artist ) free( p_sys->psz_artist );
 185     if( p_sys->psz_copyright ) free( p_sys->psz_copyright );
 186     if( p_sys->psz_description ) free( p_sys->psz_description );
 187
 188     if( p_sys->i_track > 0 ) free( p_sys->track );
 189     free( p_sys );
 190 }
 191
 192
 193 /*****************************************************************************
 194  * Demux:
 195  *****************************************************************************/
 196 static int Demux( demux_t *p_demux )
 197 {
 198     demux_sys_t *p_sys = p_demux->p_sys;
 199     uint8_t     header[18];
 200     int         i_size, i_id, i_flags, i;
 201     int64_t     i_pts;
 202     real_track_t *tk = NULL;
 203     vlc_bool_t  b_selected;
 204
 205     if( p_sys->i_data_packets >= p_sys->i_data_packets_count &&
 206         p_sys->i_data_packets_count )
 207     {
 208         if( stream_Read( p_demux->s, header, 18 ) < 18 )
 209         {
 210             return 0;
 211         }
 212         if( strncmp( (char *)header, "DATA", 4 ) )
 213         {
 214             return 0;
 215         }
 216         p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
 217         p_sys->i_data_size   = GetDWBE( &header[4] );
 218         p_sys->i_data_packets_count = GetDWBE( &header[10] );
 219         p_sys->i_data_packets = 0;
 220         p_sys->i_data_offset_next = GetDWBE( &header[14] );
 221
 222         msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
 223                  p_sys->i_data_packets_count,
 224                  (uint32_t)p_sys->i_data_offset_next );
 225     }
 226
 227     if( stream_Read( p_demux->s, header, 12 ) < 12 ) return 0;
 228
 229     i_size = GetWBE( &header[2] ) - 12;
 230     i_id   = GetWBE( &header[4] );
 231     i_pts  = 1000 * GetDWBE( &header[6] );
 232     i_pts += 1000; /* Avoid 0 pts */
 233     i_flags= header[11]; /* flags 0x02 -> keyframe */
 234
 235 #if 0
 236     msg_Dbg( p_demux, "packet %d size=%d id=%d pts=%u",
 237              p_sys->i_data_packets, i_size, i_id, (uint32_t)(i_pts/1000) );
 238 #endif
 239
 240     p_sys->i_data_packets++;
 241
 242     stream_Read( p_demux->s, p_sys->buffer, i_size );
 243
 244     for( i = 0; i < p_sys->i_track; i++ )
 245     {
 246         if( p_sys->track[i]->i_id == i_id ) tk = p_sys->track[i];
 247     }
 248
 249     if( tk == NULL )
 250     {
 251         msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
 252         return 1;
 253     }
 254     es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b_selected );
 255
 256     if( tk->fmt.i_cat == VIDEO_ES && b_selected )
 257     {
 258         uint8_t *p = p_sys->buffer;
 259
 260         while( p < &p_sys->buffer[i_size - 2] )
 261         {
 262             uint8_t h = *p++;
 263             int     i_len = 0;
 264             int     i_copy;
 265             int     i_subseq = 0;
 266             int     i_seqnum = 0;
 267             int     i_offset = 0;
 268
 269             if( (h&0xc0) == 0x40 )
 270             {
 271                 /* Short header */
 272                 p++;
 273                 i_len = &p_sys->buffer[i_size] - p;
 274             }
 275             else
 276             {
 277                 if( (h&0x40) == 0 )
 278                 {
 279                     i_subseq = (*p++)&0x7f;
 280                 }
 281                 i_len = (p[0] << 8)|p[1]; p += 2;
 282                 if( (i_len&0xc000) == 0 )
 283                 {
 284                     i_len <<= 16;
 285                     i_len |= (p[0] << 8)|p[1]; p += 2;
 286                     i_len &= 0x3fffffff;
 287                 }
 288                 else
 289                 {
 290                     i_len &= 0x3fff;
 291                 }
 292
 293                 i_offset = (p[0] << 8)|p[1]; p += 2;
 294                 if( (i_offset&0xc000) == 0 )
 295                 {
 296                     i_offset <<= 16;
 297                     i_offset |= (p[0] << 8)|p[1]; p += 2;
 298                     i_offset &= 0x3fffffff;
 299                 }
 300                 else
 301                 {
 302                     i_offset &= 0x3fff;
 303                 }
 304                 i_seqnum = *p++;
 305             }
 306
 307             i_copy = i_len - i_offset;
 308             if( i_copy > &p_sys->buffer[i_size] - p )
 309             {
 310                 i_copy = &p_sys->buffer[i_size] - p;
 311             }
 312             else if( i_copy < 0 )
 313             {
 314                 break;
 315             }
 316
 317             msg_Dbg( p_demux, "    - len=%d offset=%d size=%d subseq=%d seqnum=%d",
 318                      i_len, i_offset, i_copy, i_subseq, i_seqnum );
 319
 320             if( (h&0xc0) == 0x80 )
 321             {
 322                 /* last fragment -> fixes */
 323                 i_copy = i_offset;
 324                 i_offset = i_len - i_copy;
 325                 msg_Dbg( p_demux, "last fixing copy=%d offset=%d",
 326                          i_copy, i_offset );
 327             }
 328
 329             if( tk->p_frame &&
 330                 ( tk->p_frame->i_dts != i_pts ||
 331                   tk->i_frame != i_len ) )
 332             {
 333                 msg_Dbg( p_demux, "sending size=%d", tk->p_frame->i_buffer );
 334
 335                 if( p_sys->i_pcr < tk->p_frame->i_dts )
 336                 {
 337                     p_sys->i_pcr = tk->p_frame->i_dts;
 338
 339                     es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 340                                     (int64_t)p_sys->i_pcr );
 341                 }
 342                 es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 343
 344                 tk->i_frame = 0;
 345                 tk->p_frame = NULL;
 346             }
 347
 348             if( (h&0xc0) != 0x80 && (h&0xc0) != 0x00 && !tk->p_frame )
 349             {
 350                 /* no fragment */
 351                 i_len = i_copy;
 352                 i_offset = 0;
 353             }
 354
 355
 356             if( tk->p_frame == NULL )
 357             {
 358                 msg_Dbg( p_demux, "new frame size=%d", i_len );
 359                 tk->i_frame = i_len;
 360                 if( !( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) )
 361                 {
 362                     return -1;
 363                 }
 364                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 365                 tk->p_frame->i_dts = i_pts;
 366                 tk->p_frame->i_pts = i_pts;
 367
 368                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 369                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 0;      /* chunk counts */
 370             }
 371
 372             if( i_offset < tk->i_frame)
 373             {
 374                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 375
 376                 msg_Dbg( p_demux, "copying new buffer n=%d offset=%d copy=%d",
 377                          i_ck, i_offset, i_copy );
 378
 379                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 380
 381                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 382             }
 383
 384             p += i_copy;
 385
 386             if( (h&0xc0) != 0x80 )
 387             {
 388                 break;
 389             }
 390
 391 #if 0
 392             if( tk->p_frame )
 393             {
 394                 /* append data */
 395                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 396
 397                 if( (h&0xc0) == 0x80 )
 398                 {
 399                     /* last fragment */
 400                     i_copy = i_offset;
 401                     i_offset = i_len - i_offset;
 402
 403                     ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 404                     memcpy( &tk->p_frame->p_buffer[i_offset+ 8], p, i_copy );
 405                     p += i_copy;
 406
 407                     if( p_sys->i_pcr < tk->p_frame->i_dts )
 408                     {
 409                         p_sys->i_pcr = tk->p_frame->i_dts;
 410                         es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 411                                         (int64_t)p_sys->i_pcr );
 412                     }
 413                     es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 414
 415                     tk->i_frame = 0;
 416                     tk->p_frame = NULL;
 417
 418                     continue;
 419                 }
 420
 421                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 422                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 423                 break;
 424             }
 425
 426             if( (h&0xc0) != 0x00 )
 427             {
 428                 block_t *p_frame;
 429
 430                 /* not fragmented */
 431                 if( !( p_frame = block_New( p_demux, i_copy + 8 + 8 ) ) )
 432                 {
 433                     return -1;
 434                 }
 435                 p_frame->i_dts = i_pts;
 436                 p_frame->i_pts = i_pts;
 437
 438                 ((uint32_t*)p_frame->p_buffer)[0] = i_copy;
 439                 ((uint32_t*)p_frame->p_buffer)[1] = 1;
 440                 ((uint32_t*)(p_frame->p_buffer+i_copy+8))[0] = 0;
 441                 memcpy( &p_frame->p_buffer[8], p, i_copy );
 442
 443                 p += i_copy;
 444
 445                 if( p_sys->i_pcr < p_frame->i_dts )
 446                 {
 447                     p_sys->i_pcr = p_frame->i_dts;
 448                     es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 449                                     (int64_t)p_sys->i_pcr );
 450                 }
 451                 es_out_Send( p_demux->out, tk->p_es, p_frame );
 452             }
 453             else
 454             {
 455                 /* First fragment */
 456                 tk->i_frame = i_len;
 457                 if( !( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) )
 458                 {
 459                     return -1;
 460                 }
 461                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 462                 tk->p_frame->i_dts = i_pts;
 463                 tk->p_frame->i_pts = i_pts;
 464
 465                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 466                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 1;      /* chunk counts */
 467                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[0] = i_offset;
 468                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 469
 470                 break;
 471             }
 472 #endif
 473         }
 474     }
 475     else if( tk->fmt.i_cat == AUDIO_ES && b_selected )
 476     {
 477         /* Set PCR */
 478         if( p_sys->i_pcr < i_pts )
 479         {
 480             p_sys->i_pcr = i_pts;
 481             es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 482                             (int64_t)p_sys->i_pcr );
 483         }
 484
 485         if( tk->fmt.i_codec == VLC_FOURCC( 'm', 'p', '4', 'a' ) )
 486         {
 487             int     i_sub = (p_sys->buffer[1] >> 4)&0x0f;
 488             uint8_t *p_sub = &p_sys->buffer[2+2*i_sub];
 489
 490             int i;
 491             for( i = 0; i < i_sub; i++ )
 492             {
 493                 int i_sub_size = GetWBE( &p_sys->buffer[2+i*2]);
 494                 block_t *p_block = block_New( p_demux, i_sub_size );
 495                 if( p_block )
 496                 {
 497                     memcpy( p_block->p_buffer, p_sub, i_sub_size );
 498                     p_sub += i_sub_size;
 499
 500                     p_block->i_dts =
 501                     p_block->i_pts = ( i == 0 ? i_pts : 0 );
 502
 503                     es_out_Send( p_demux->out, tk->p_es, p_block );
 504                 }
 505             }
 506         }
 507         else if( tk->fmt.i_codec == VLC_FOURCC( 'c', 'o', 'o', 'k' ) ||
 508                  tk->fmt.i_codec == VLC_FOURCC( 'a', 't', 'r', 'c') ||
 509                  tk->fmt.i_codec == VLC_FOURCC( 's', 'i', 'p', 'r') ||
 510                  tk->fmt.i_codec == VLC_FOURCC( '2', '8', '_', '8') )
 511         {
 512             uint8_t *p_buf = p_sys->buffer;
 513             int y = tk->i_subpacket / ( tk->i_frame_size /tk->i_subpacket_size);
 514             int i_index, i;
 515
 516             /* Sanity check */
 517             if( i_flags & 2 ) y = tk->i_subpacket = 0;
 518
 519             if( tk->fmt.i_codec == VLC_FOURCC( 'c', 'o', 'o', 'k' ) ||
 520                 tk->fmt.i_codec == VLC_FOURCC( 'a', 't', 'r', 'c' ) ||
 521                 tk->fmt.i_codec == VLC_FOURCC( 's', 'i', 'p', 'r' ) )
 522             for( i = 0; i < tk->i_frame_size / tk->i_subpacket_size; i++ )
 523             {
 524                 block_t *p_block = block_New( p_demux, tk->i_subpacket_size );
 525                 memcpy( p_block->p_buffer, p_buf, tk->i_subpacket_size );
 526                 p_buf += tk->i_subpacket_size;
 527
 528                 i_index = tk->i_subpacket_h * i +
 529                     ((tk->i_subpacket_h + 1) / 2) * (y&1) + (y>>1);
 530
 531                 p_block->i_dts = p_block->i_pts = i_pts;
 532                 tk->p_subpackets[i_index] = p_block;
 533                 tk->i_subpacket++;
 534             }
 535
 536             if( tk->fmt.i_codec == VLC_FOURCC( '2', '8', '_', '8' ) )
 537             for( i = 0; i < tk->i_subpacket_h / 2; i++ )
 538             {
 539                 block_t *p_block = block_New( p_demux, tk->i_coded_frame_size);
 540                 memcpy( p_block->p_buffer, p_buf, tk->i_coded_frame_size );
 541                 p_buf += tk->i_coded_frame_size;
 542
 543                 i_index = (i * 2 * tk->i_frame_size) /
 544                     tk->i_coded_frame_size + y;
 545
 546                 p_block->i_dts = p_block->i_pts = i_pts;
 547                 tk->p_subpackets[i_index] = p_block;
 548                 tk->i_subpacket++;
 549             }
 550
 551             while( tk->i_out_subpacket != tk->i_subpackets &&
 552                    tk->p_subpackets[tk->i_out_subpacket] )
 553             {
 554                 block_t *p_block = tk->p_subpackets[tk->i_out_subpacket];
 555                 tk->p_subpackets[tk->i_out_subpacket] = 0;
 556
 557                 if( tk->i_out_subpacket ) p_block->i_dts = p_block->i_pts = 0;
 558                 es_out_Send( p_demux->out, tk->p_es, p_block );
 559
 560                 tk->i_out_subpacket++;
 561             }
 562
 563             if( tk->i_subpacket == tk->i_subpackets &&
 564                 tk->i_out_subpacket != tk->i_subpackets )
 565             {
 566                 msg_Warn( p_demux, "i_subpacket != i_out_subpacket, "
 567                           "this shouldn't happen" );
 568             }
 569
 570             if( tk->i_subpacket == tk->i_subpackets )
 571             {
 572                 tk->i_subpacket = 0;
 573                 tk->i_out_subpacket = 0;
 574             }
 575         }
 576         else
 577         {
 578             block_t *p_block = block_New( p_demux, i_size );
 579
 580             if( tk->fmt.i_codec == VLC_FOURCC( 'a', '5', '2', ' ' ) )
 581             {
 582                 uint8_t *src = p_sys->buffer;
 583                 uint8_t *dst = p_block->p_buffer;
 584
 585                 /* byte swap data */
 586                 while( dst < &p_block->p_buffer[i_size- 1])
 587                 {
 588                     *dst++ = src[1];
 589                     *dst++ = src[0];
 590
 591                     src += 2;
 592                 }
 593             }
 594             else
 595             {
 596                 memcpy( p_block->p_buffer, p_sys->buffer, i_size );
 597             }
 598             p_block->i_dts = p_block->i_pts = i_pts;
 599             es_out_Send( p_demux->out, tk->p_es, p_block );
 600         }
 601     }
 602
 603
 604     return 1;
 605 }
 606
 607 /*****************************************************************************
 608  * Control:
 609  *****************************************************************************/
 610 static int Control( demux_t *p_demux, int i_query, va_list args )
 611 {
 612     demux_sys_t *p_sys = p_demux->p_sys;
 613 #if 0
 614     double f, *pf;
 615     int64_t i64;
 616 #endif
 617     int64_t *pi64;
 618
 619     switch( i_query )
 620     {
 621 #if 0
 622         case DEMUX_GET_POSITION:
 623             pf = (double*) va_arg( args, double* );
 624             i64 = stream_Size( p_demux->s );
 625             if( i64 > 0 )
 626             {
 627                 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
 628             }
 629             else
 630             {
 631                 *pf = 0.0;
 632             }
 633             return VLC_SUCCESS;
 634
 635         case DEMUX_SET_POSITION:
 636             f = (double) va_arg( args, double );
 637             i64 = stream_Size( p_demux->s );
 638
 639             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 640
 641             return stream_Seek( p_demux->s, (int64_t)(i64 * f) );
 642
 643         case DEMUX_GET_TIME:
 644             pi64 = (int64_t*)va_arg( args, int64_t * );
 645             if( p_sys->i_mux_rate > 0 )
 646             {
 647                 *pi64 = (int64_t)1000000 * ( stream_Tell( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 648                 return VLC_SUCCESS;
 649             }
 650             *pi64 = 0;
 651             return VLC_EGENERIC;
 652 #endif
 653
 654         case DEMUX_GET_LENGTH:
 655             pi64 = (int64_t*)va_arg( args, int64_t * );
 656
 657             /* the commented following lines are fen's implementation, which doesn't seem to
 658              * work for one reason or another -- FK */
 659             /*if( p_sys->i_mux_rate > 0 )
 660             {
 661                 *pi64 = (int64_t)1000000 * ( stream_Size( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 662                 return VLC_SUCCESS;
 663             }*/
 664             if( p_sys->i_our_duration > 0 )
 665             {
 666                 /* our stored duration is in ms, so... */
 667                 *pi64 = (int64_t)1000 * p_sys->i_our_duration;
 668
 669                 return VLC_SUCCESS;
 670             }
 671             *pi64 = 0;
 672             return VLC_EGENERIC;
 673
 674         case DEMUX_GET_META:
 675         {
 676             vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
 677
 678             /* the core will crash if we provide NULL strings, so check
 679              * every string first */
 680             if( p_sys->psz_title )
 681                 vlc_meta_SetTitle( p_meta, p_sys->psz_title );
 682             if( p_sys->psz_artist )
 683                 vlc_meta_SetArtist( p_meta, p_sys->psz_artist );
 684             if( p_sys->psz_copyright )
 685                 vlc_meta_SetCopyright( p_meta, p_sys->psz_copyright );
 686             if( p_sys->psz_description )
 687                 vlc_meta_SetDescription( p_meta, p_sys->psz_description );
 688             return VLC_SUCCESS;
 689         }
 690
 691         case DEMUX_SET_TIME:
 692         case DEMUX_GET_FPS:
 693         default:
 694             return VLC_EGENERIC;
 695     }
 696     return VLC_EGENERIC;
 697 }
 698
 699 /*****************************************************************************
 700  * HeaderRead:
 701  *****************************************************************************/
 702 static int HeaderRead( demux_t *p_demux )
 703 {
 704     demux_sys_t *p_sys = p_demux->p_sys;
 705     uint8_t header[100];    /* FIXME */
 706
 707     uint32_t    i_id;
 708     uint32_t    i_size;
 709     int64_t     i_skip;
 710     int         i_version;
 711
 712     for( ;; )
 713     {
 714         /* Read the header */
 715         if( stream_Read( p_demux->s, header, 10 ) < 10 )
 716         {
 717             return VLC_EGENERIC;
 718         }
 719         i_id        = VLC_FOURCC( header[0], header[1], header[2], header[3] );
 720         i_size      = GetDWBE( &header[4] );
 721         i_version   = GetWBE( &header[8] );
 722
 723         msg_Dbg( p_demux, "object %4.4s size=%d version=%d",
 724                  (char*)&i_id, i_size, i_version );
 725
 726         if( i_size < 10 && i_id != VLC_FOURCC('D','A','T','A') )
 727         {
 728             msg_Dbg( p_demux, "invalid size for object %4.4s", (char*)&i_id );
 729             return VLC_EGENERIC;
 730         }
 731         i_skip = i_size - 10;
 732
 733         if( i_id == VLC_FOURCC('.','R','M','F') )
 734         {
 735             if( stream_Read( p_demux->s, header, 8 ) < 8 ) return VLC_EGENERIC;
 736             msg_Dbg( p_demux, "    - file version=0x%x num headers=%d",
 737                      GetDWBE( &header[0] ), GetDWBE( &header[4] ) );
 738
 739             i_skip -= 8;
 740         }
 741         else if( i_id == VLC_FOURCC('P','R','O','P') )
 742         {
 743             int i_flags;
 744
 745             if( stream_Read(p_demux->s, header, 40) < 40 ) return VLC_EGENERIC;
 746
 747             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 748                      GetDWBE(&header[0]), GetDWBE(&header[4]) );
 749             msg_Dbg( p_demux, "    - max packet size=%d avg bitrate=%d",
 750                      GetDWBE(&header[8]), GetDWBE(&header[12]) );
 751             msg_Dbg( p_demux, "    - packets count=%d", GetDWBE(&header[16]) );
 752             msg_Dbg( p_demux, "    - duration=%d ms", GetDWBE(&header[20]) );
 753             msg_Dbg( p_demux, "    - preroll=%d ms", GetDWBE(&header[24]) );
 754             msg_Dbg( p_demux, "    - index offset=%d", GetDWBE(&header[28]) );
 755             msg_Dbg( p_demux, "    - data offset=%d", GetDWBE(&header[32]) );
 756             msg_Dbg( p_demux, "    - num streams=%d", GetWBE(&header[36]) );
 757
 758             /* set the duration for export in control */
 759             p_sys->i_our_duration = (int)GetDWBE(&header[20]);
 760
 761             i_flags = GetWBE(&header[38]);
 762             msg_Dbg( p_demux, "    - flags=0x%x %s%s%s",
 763                      i_flags,
 764                      i_flags&0x0001 ? "PN_SAVE_ENABLED " : "",
 765                      i_flags&0x0002 ? "PN_PERFECT_PLAY_ENABLED " : "",
 766                      i_flags&0x0004 ? "PN_LIVE_BROADCAST" : "" );
 767             i_skip -= 40;
 768         }
 769         else if( i_id == VLC_FOURCC('C','O','N','T') )
 770         {
 771             int i_len;
 772             char *psz;
 773
 774             /* FIXME FIXME: should convert from whatever the character
 775              * encoding of the input meta data is to UTF-8. */
 776
 777             stream_Read( p_demux->s, header, 2 );
 778             if( ( i_len = GetWBE( header ) ) > 0 )
 779             {
 780                 psz = malloc( i_len + 1 );
 781                 stream_Read( p_demux->s, psz, i_len );
 782                 psz[i_len] = '\0';
 783
 784                 msg_Dbg( p_demux, "    - title=`%s'", psz );
 785                 EnsureUTF8( psz );
 786                 asprintf( &p_sys->psz_title, psz );
 787                 free( psz );
 788                 i_skip -= i_len;
 789             }
 790             i_skip -= 2;
 791
 792             stream_Read( p_demux->s, header, 2 );
 793             if( ( i_len = GetWBE( header ) ) > 0 )
 794             {
 795                 psz = malloc( i_len + 1 );
 796                 stream_Read( p_demux->s, psz, i_len );
 797                 psz[i_len] = '\0';
 798
 799                 msg_Dbg( p_demux, "    - author=`%s'", psz );
 800                 EnsureUTF8( psz );
 801                 asprintf( &p_sys->psz_artist, psz );
 802                 free( psz );
 803                 i_skip -= i_len;
 804             }
 805             i_skip -= 2;
 806
 807             stream_Read( p_demux->s, header, 2 );
 808             if( ( i_len = GetWBE( header ) ) > 0 )
 809             {
 810                 psz = malloc( i_len + 1 );
 811                 stream_Read( p_demux->s, psz, i_len );
 812                 psz[i_len] = '\0';
 813
 814                 msg_Dbg( p_demux, "    - copyright=`%s'", psz );
 815                 EnsureUTF8( psz );
 816                 asprintf( &p_sys->psz_copyright, psz );
 817                 free( psz );
 818                 i_skip -= i_len;
 819             }
 820             i_skip -= 2;
 821
 822             stream_Read( p_demux->s, header, 2 );
 823             if( ( i_len = GetWBE( header ) ) > 0 )
 824             {
 825                 psz = malloc( i_len + 1 );
 826                 stream_Read( p_demux->s, psz, i_len );
 827                 psz[i_len] = '\0';
 828
 829                 msg_Dbg( p_demux, "    - comment=`%s'", psz );
 830                 EnsureUTF8( psz );
 831                 asprintf( &p_sys->psz_description, psz );
 832                 free( psz );
 833                 i_skip -= i_len;
 834             }
 835             i_skip -= 2;
 836         }
 837         else if( i_id == VLC_FOURCC('M','D','P','R') )
 838         {
 839             /* Media properties header */
 840             int  i_num;
 841             int  i_len;
 842             char *psz;
 843
 844             if( stream_Read(p_demux->s, header, 30) < 30 ) return VLC_EGENERIC;
 845             i_num = GetWBE( header );
 846             msg_Dbg( p_demux, "    - id=0x%x", i_num );
 847             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 848                      GetDWBE(&header[2]), GetDWBE(&header[6]) );
 849             msg_Dbg( p_demux, "    - max packet size=%d avg packet size=%d",
 850                      GetDWBE(&header[10]), GetDWBE(&header[14]) );
 851             msg_Dbg( p_demux, "    - start time=%d", GetDWBE(&header[18]) );
 852             msg_Dbg( p_demux, "    - preroll=%d", GetDWBE(&header[22]) );
 853             msg_Dbg( p_demux, "    - duration=%d", GetDWBE(&header[26]) );
 854
 855             i_skip -= 30;
 856
 857             stream_Read( p_demux->s, header, 1 );
 858             if( ( i_len = header[0] ) > 0 )
 859             {
 860                 psz = malloc( i_len + 1 );
 861                 stream_Read( p_demux->s, psz, i_len );
 862                 psz[i_len] = '\0';
 863
 864                 msg_Dbg( p_demux, "    - name=`%s'", psz );
 865                 free( psz );
 866                 i_skip -= i_len;
 867             }
 868             i_skip--;
 869
 870             stream_Read( p_demux->s, header, 1 );
 871             if( ( i_len = header[0] ) > 0 )
 872             {
 873                 psz = malloc( i_len + 1 );
 874                 stream_Read( p_demux->s, psz, i_len );
 875                 psz[i_len] = '\0';
 876
 877                 msg_Dbg( p_demux, "    - mime=`%s'", psz );
 878                 free( psz );
 879                 i_skip -= i_len;
 880             }
 881             i_skip--;
 882
 883             stream_Read( p_demux->s, header, 4 );
 884             if( ( i_len = GetDWBE( header ) ) > 0 )
 885             {
 886                 ReadCodecSpecificData( p_demux, i_len, i_num );
 887                 stream_Read( p_demux->s, NULL, i_len );
 888
 889                 i_skip -= i_len;
 890             }
 891             i_skip -= 4;
 892         }
 893         else if( i_id == VLC_FOURCC('D','A','T','A') )
 894         {
 895             stream_Read( p_demux->s, header, 8 );
 896
 897             p_sys->i_data_offset    = stream_Tell( p_demux->s ) - 10;
 898             p_sys->i_data_size      = i_size;
 899             p_sys->i_data_packets_count = GetDWBE( header );
 900             p_sys->i_data_packets   = 0;
 901             p_sys->i_data_offset_next = GetDWBE( &header[4] );
 902
 903             msg_Dbg( p_demux, "    - packets count=%d next=%u",
 904                      p_sys->i_data_packets_count,
 905                      (uint32_t)p_sys->i_data_offset_next );
 906
 907             /* we have finished the header */
 908             break;
 909         }
 910         else
 911         {
 912             /* unknow header */
 913             msg_Dbg( p_demux, "unknown chunk" );
 914         }
 915
 916         if( i_skip < 0 ) return VLC_EGENERIC;
 917         stream_Read( p_demux->s, NULL, i_skip );
 918     }
 919
 920     /* TODO read index if possible */
 921
 922     return VLC_SUCCESS;
 923 }
 924
 925 static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
 926 {
 927     demux_sys_t *p_sys = p_demux->p_sys;
 928     es_format_t fmt;
 929     real_track_t *tk;
 930     const uint8_t *p_peek;
 931
 932     msg_Dbg( p_demux, "    - specific data len=%d", i_len );
 933     if( stream_Peek(p_demux->s, &p_peek, i_len) < i_len ) return VLC_EGENERIC;
 934
 935     if( ( i_len >= 8 ) && !memcmp( &p_peek[4], "VIDO", 4 ) )
 936     {
 937         es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC( p_peek[8], p_peek[9],
 938                         p_peek[10], p_peek[11] ) );
 939         fmt.video.i_width = GetWBE( &p_peek[12] );
 940         fmt.video.i_height= GetWBE( &p_peek[14] );
 941
 942         fmt.i_extra = 8;
 943         fmt.p_extra = malloc( 8 );
 944         ((uint32_t*)fmt.p_extra)[0] = GetDWBE( &p_peek[26] );
 945         ((uint32_t*)fmt.p_extra)[1] = GetDWBE( &p_peek[30] );
 946
 947         msg_Dbg( p_demux, "    - video 0x%08x 0x%08x",
 948                  ((uint32_t*)fmt.p_extra)[0], ((uint32_t*)fmt.p_extra)[1] );
 949
 950         if( GetDWBE( &p_peek[30] ) == 0x10003000 ||
 951             GetDWBE( &p_peek[30] ) == 0x10003001 )
 952         {
 953             fmt.i_codec = VLC_FOURCC( 'R','V','1','3' );
 954         }
 955         else if( GetDWBE( &p_peek[30] ) == 0x20001000 ||
 956                  GetDWBE( &p_peek[30] ) == 0x20100001 ||
 957                  GetDWBE( &p_peek[30] ) == 0x20200002 )
 958         {
 959             fmt.i_codec = VLC_FOURCC( 'R','V','2','0' );
 960         }
 961         else if( GetDWBE( &p_peek[30] ) == 0x30202002 )
 962         {
 963             fmt.i_codec = VLC_FOURCC( 'R','V','3','0' );
 964         }
 965         else if( GetDWBE( &p_peek[30] ) == 0x40000000 )
 966         {
 967             fmt.i_codec = VLC_FOURCC( 'R','V','4','0' );
 968         }
 969
 970         msg_Dbg( p_demux, "    - video %4.4s %dx%d",
 971                  (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 972
 973         tk = malloc( sizeof( real_track_t ) );
 974         tk->i_out_subpacket = 0;
 975         tk->i_subpacket = 0;
 976         tk->i_subpackets = 0;
 977         tk->p_subpackets = NULL;
 978         tk->i_id = i_num;
 979         tk->fmt = fmt;
 980         tk->i_frame = 0;
 981         tk->p_frame = NULL;
 982         tk->p_es = es_out_Add( p_demux->out, &fmt );
 983
 984         TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 985     }
 986     else if( !strncmp( (char *)p_peek, ".ra\xfd", 4 ) )
 987     {
 988         int i_version = GetWBE( &p_peek[4] );
 989         int i_header_size, i_flavor, i_coded_frame_size, i_subpacket_h;
 990         int i_frame_size, i_subpacket_size;
 991
 992         msg_Dbg( p_demux, "    - audio version=%d", i_version );
 993
 994         p_peek += 6;
 995         es_format_Init( &fmt, AUDIO_ES, 0 );
 996
 997         if( i_version == 3 )
 998         {
 999             msg_Dbg( p_demux, "    - audio version 3 is not supported!" );
1000             return VLC_EGENERIC;
1001         }
1002
1003         p_peek += 2; /* 00 00 */
1004         p_peek += 4; /* .ra4 or .ra5 */
1005         p_peek += 4; /* data size */
1006         p_peek += 2; /* version (4 or 5) */
1007         i_header_size = GetDWBE( p_peek ); p_peek += 4; /* header size */
1008         i_flavor = GetWBE( p_peek ); p_peek += 2; /* codec flavor */
1009         i_coded_frame_size = GetDWBE( p_peek ); p_peek += 4; /* coded frame size*/
1010         p_peek += 4; /* ?? */
1011         p_peek += 4; /* ?? */
1012         p_peek += 4; /* ?? */
1013         i_subpacket_h = GetWBE( p_peek ); p_peek += 2; /* 1 */
1014         i_frame_size = GetWBE( p_peek ); p_peek += 2; /* frame size */
1015         i_subpacket_size = GetWBE( p_peek ); p_peek += 2; /* subpacket_size */
1016         p_peek += 2; /* ?? */
1017
1018         if( i_version == 5 ) p_peek += 6; /* 0, srate, 0 */
1019
1020         fmt.audio.i_rate = GetWBE( p_peek ); p_peek += 2; /* Sample Rate */
1021         p_peek += 2; /* ?? */
1022         fmt.audio.i_bitspersample = GetWBE( p_peek ); p_peek += 2; /* Sure?*/
1023         fmt.audio.i_channels = GetWBE( p_peek ); p_peek += 2; /* Channels */
1024         fmt.audio.i_blockalign = i_frame_size;
1025
1026         if( i_version == 5 )
1027         {
1028             p_peek += 4; /* genr */
1029             memcpy( (char *)&fmt.i_codec, p_peek, 4 ); p_peek += 4;
1030         }
1031         else
1032         {
1033             p_peek += p_peek[0] + 1; /* descr 1 */
1034             memcpy( (char *)&fmt.i_codec, p_peek + 1, 4 ); /* descr 2 */
1035             p_peek += p_peek[0] + 1;
1036         }
1037
1038         msg_Dbg( p_demux, "    - audio codec=%4.4s channels=%d rate=%dHz",
1039                  (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
1040
1041         p_peek += 3; /* ?? */
1042         if( i_version == 5 ) p_peek++;
1043
1044         switch( fmt.i_codec )
1045         {
1046         case VLC_FOURCC( 'd', 'n', 'e', 't' ):
1047             fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
1048             break;
1049
1050         case VLC_FOURCC( 'r', 'a', 'a', 'c' ):
1051         case VLC_FOURCC( 'r', 'a', 'c', 'p' ):
1052             fmt.i_extra = GetDWBE( p_peek ); p_peek += 4;
1053             //version 5 ?
1054             if( fmt.i_extra > 0 ) { fmt.i_extra--; p_peek++; }
1055             if( fmt.i_extra > 0 )
1056             {
1057                 fmt.p_extra = malloc( fmt.i_extra );
1058                 memcpy( fmt.p_extra, p_peek, fmt.i_extra );
1059             }
1060
1061             fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
1062             break;
1063
1064         case VLC_FOURCC('c','o','o','k'):
1065         case VLC_FOURCC('a','t','r','c'):
1066 //        case VLC_FOURCC('s','i','p','r'):
1067             fmt.audio.i_blockalign = i_subpacket_size;
1068             if( !(fmt.i_extra = GetDWBE( p_peek )) ) break;
1069             fmt.p_extra = malloc( fmt.i_extra );
1070             memcpy( fmt.p_extra, p_peek + 4, fmt.i_extra );
1071             break;
1072
1073         case VLC_FOURCC('2','8','_','8'):
1074             fmt.i_extra = 0;
1075             fmt.audio.i_blockalign = i_coded_frame_size;
1076             break;
1077
1078         default:
1079             msg_Dbg( p_demux, "    - unknown audio codec=%4.4s",
1080                      (char*)&fmt.i_codec );
1081             break;
1082         }
1083
1084         if( fmt.i_codec != 0 )
1085         {
1086             int i;
1087
1088             msg_Dbg( p_demux, "        - extra data=%d", fmt.i_extra );
1089
1090             tk = malloc( sizeof( real_track_t ) );
1091             tk->i_id = i_num;
1092             tk->fmt = fmt;
1093             tk->i_frame = 0;
1094             tk->p_frame = NULL;
1095
1096             tk->i_subpacket_h = i_subpacket_h;
1097             tk->i_subpacket_size = i_subpacket_size;
1098             tk->i_coded_frame_size = i_coded_frame_size;
1099             tk->i_frame_size = i_frame_size;
1100
1101             tk->i_out_subpacket = 0;
1102             tk->i_subpacket = 0;
1103             tk->i_subpackets = 0;
1104             tk->p_subpackets = NULL;
1105             if( fmt.i_codec == VLC_FOURCC('c','o','o','k')
1106              || fmt.i_codec == VLC_FOURCC('a','t','r','c') )
1107             {
1108                 tk->i_subpackets =
1109                     i_subpacket_h * i_frame_size / tk->i_subpacket_size;
1110                 tk->p_subpackets =
1111                     malloc( tk->i_subpackets * sizeof(block_t *) );
1112             }
1113             else if( fmt.i_codec == VLC_FOURCC('2','8','_','8') )
1114             {
1115                 tk->i_subpackets =
1116                     i_subpacket_h * i_frame_size / tk->i_coded_frame_size;
1117                 tk->p_subpackets =
1118                     malloc( tk->i_subpackets * sizeof(block_t *) );
1119             }
1120
1121             for( i = 0; i < tk->i_subpackets; i++ ) tk->p_subpackets[i] = NULL;
1122
1123             tk->p_es = es_out_Add( p_demux->out, &fmt );
1124
1125             TAB_APPEND( p_sys->i_track, p_sys->track, tk );
1126         }
1127     }
1128
1129     return VLC_SUCCESS;
1130 }