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  * Status of this demuxer:
  26  * Real Media format
  27  * -----------------
  28  *
  29  * version v3 w/ 14_4/lpcJ is ok.
  30  * version v4/5: - atrac3 is ok.
  31  *               - cook is ok.
  32  *               - raac, racp are ok.
  33  *               - dnet is twisted "The byte order of the data is reversed
  34  *                                  from standard AC3"
  35  *               - 28_8 seem problematic.
  36  *               - sipr should be fine, but our decoder suxx :)
  37  *               - ralf is unsupported, but hardly any sample exist.
  38  *               - mp3 is unsupported, one sample exists...
  39  *
  40  * Real Audio Only
  41  * ---------------
  42  * Not supported...
  43  */
  44
  45 /*****************************************************************************
  46  * Preamble
  47  *****************************************************************************/
  48 #ifdef HAVE_CONFIG_H
  49 # include "config.h"
  50 #endif
  51
  52 #include <vlc/vlc.h>
  53
  54
  55 #include <vlc_demux.h>
  56 #include <vlc_charset.h>
  57 #include <vlc_meta.h>
  58
  59 /*****************************************************************************
  60  * Module descriptor
  61  *****************************************************************************/
  62 static int  Open    ( vlc_object_t * );
  63 static void Close  ( vlc_object_t * );
  64
  65 vlc_module_begin();
  66     set_description( _("Real demuxer" ) );
  67     set_capability( "demux2", 15 );
  68     set_category( CAT_INPUT );
  69     set_subcategory( SUBCAT_INPUT_DEMUX );
  70     set_callbacks( Open, Close );
  71     add_shortcut( "real" );
  72     add_shortcut( "rm" );
  73 vlc_module_end();
  74
  75 /*****************************************************************************
  76  * Local prototypes
  77  *****************************************************************************/
  78
  79 typedef struct
  80 {
  81     int         i_id;
  82     es_format_t fmt;
  83
  84     es_out_id_t *p_es;
  85
  86     int         i_frame;
  87     block_t     *p_frame;
  88
  89     int         i_subpacket_h;
  90     int         i_subpacket_size;
  91     int         i_coded_frame_size;
  92     int         i_frame_size;
  93
  94     int         i_subpacket;
  95     int         i_subpackets;
  96     block_t     **p_subpackets;
  97     int         i_out_subpacket;
  98
  99 } real_track_t;
 100
 101 struct demux_sys_t
 102 {
 103     int64_t  i_data_offset;
 104     int64_t  i_data_size;
 105     uint32_t i_data_packets_count;
 106     uint32_t i_data_packets;
 107     int64_t  i_data_offset_next;
 108
 109     int  i_our_duration;
 110     int  i_mux_rate;
 111
 112     char* psz_title;
 113     char* psz_artist;
 114     char* psz_copyright;
 115     char* psz_description;
 116
 117     int          i_track;
 118     real_track_t **track;
 119
 120     uint8_t buffer[65536];
 121
 122     int64_t     i_pcr;
 123 };
 124
 125 static int Demux( demux_t *p_demux );
 126 static int Control( demux_t *p_demux, int i_query, va_list args );
 127
 128 static int HeaderRead( demux_t *p_demux );
 129 static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num );
 130
 131 /*****************************************************************************
 132  * Open
 133  *****************************************************************************/
 134 static int Open( vlc_object_t *p_this )
 135 {
 136     demux_t     *p_demux = (demux_t*)p_this;
 137     demux_sys_t *p_sys;
 138
 139     const uint8_t *p_peek;
 140
 141     if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 ) return VLC_EGENERIC;
 142     if( !memcmp( p_peek, ".ra", 3 ) )
 143     {
 144         msg_Warn( p_demux, ".ra files unsuported" );
 145         return VLC_EGENERIC;
 146     }
 147     if( memcmp( p_peek, ".RMF", 4 ) ) return VLC_EGENERIC;
 148
 149     /* Fill p_demux field */
 150     p_demux->pf_demux = Demux;
 151     p_demux->pf_control = Control;
 152     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 153     memset( p_sys, 0, sizeof( demux_sys_t ) );
 154     p_sys->i_data_offset = 0;
 155     p_sys->i_track = 0;
 156     p_sys->track   = NULL;
 157     p_sys->i_pcr   = 1;
 158
 159
 160     /* Parse the headers */
 161     if( HeaderRead( p_demux ) )
 162     {
 163         int i;
 164         msg_Err( p_demux, "invalid header" );
 165         for( i = 0; i < p_sys->i_track; i++ )
 166         {
 167             real_track_t *tk = p_sys->track[i];
 168
 169             if( tk->p_es )
 170             {
 171                 es_out_Del( p_demux->out, tk->p_es );
 172             }
 173             free( tk );
 174         }
 175         if( p_sys->i_track > 0 )
 176         {
 177             free( p_sys->track );
 178         }
 179         free( p_sys );
 180         return VLC_EGENERIC;
 181     }
 182
 183     return VLC_SUCCESS;
 184 }
 185
 186 /*****************************************************************************
 187  * Close
 188  *****************************************************************************/
 189 static void Close( vlc_object_t *p_this )
 190 {
 191     demux_t *p_demux = (demux_t*)p_this;
 192     demux_sys_t *p_sys = p_demux->p_sys;
 193     int i;
 194
 195     for( i = 0; i < p_sys->i_track; i++ )
 196     {
 197         real_track_t *tk = p_sys->track[i];
 198         int j = tk->i_subpackets;
 199
 200         if( tk->p_frame ) block_Release( tk->p_frame );
 201         es_format_Clean( &tk->fmt );
 202
 203         while(  j-- )
 204         {
 205             if( tk->p_subpackets[ j ] )
 206                 block_Release( tk->p_subpackets[ j ] );
 207         }
 208         if( tk->i_subpackets ) free( tk->p_subpackets );
 209
 210         free( tk );
 211     }
 212
 213     if( p_sys->psz_title ) free( p_sys->psz_title );
 214     if( p_sys->psz_artist ) free( p_sys->psz_artist );
 215     if( p_sys->psz_copyright ) free( p_sys->psz_copyright );
 216     if( p_sys->psz_description ) free( p_sys->psz_description );
 217
 218     if( p_sys->i_track > 0 ) free( p_sys->track );
 219     free( p_sys );
 220 }
 221
 222
 223 /*****************************************************************************
 224  * Demux:
 225  *****************************************************************************/
 226 static int Demux( demux_t *p_demux )
 227 {
 228     demux_sys_t *p_sys = p_demux->p_sys;
 229     uint8_t     header[18];
 230     int         i_size, i_id, i_flags, i;
 231     int64_t     i_pts;
 232     real_track_t *tk = NULL;
 233     vlc_bool_t  b_selected;
 234
 235     if( p_sys->i_data_packets >= p_sys->i_data_packets_count &&
 236         p_sys->i_data_packets_count )
 237     {
 238         if( stream_Read( p_demux->s, header, 18 ) < 18 )
 239         {
 240             return 0;
 241         }
 242         if( strncmp( (char *)header, "DATA", 4 ) )
 243         {
 244             return 0;
 245         }
 246         p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
 247         p_sys->i_data_size   = GetDWBE( &header[4] );
 248         p_sys->i_data_packets_count = GetDWBE( &header[10] );
 249         p_sys->i_data_packets = 0;
 250         p_sys->i_data_offset_next = GetDWBE( &header[14] );
 251
 252         msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
 253                  p_sys->i_data_packets_count,
 254                  (uint32_t)p_sys->i_data_offset_next );
 255     }
 256
 257     if( stream_Read( p_demux->s, header, 12 ) < 12 ) return 0;
 258
 259     i_size = GetWBE( &header[2] ) - 12;
 260     i_id   = GetWBE( &header[4] );
 261     i_pts  = 1000 * GetDWBE( &header[6] );
 262     i_pts += 1000; /* Avoid 0 pts */
 263     i_flags= header[11]; /* flags 0x02 -> keyframe */
 264
 265 #if 0
 266     msg_Dbg( p_demux, "packet %d size=%d id=%d pts=%u",
 267              p_sys->i_data_packets, i_size, i_id, (uint32_t)(i_pts/1000) );
 268 #endif
 269
 270     p_sys->i_data_packets++;
 271
 272     stream_Read( p_demux->s, p_sys->buffer, i_size );
 273
 274     for( i = 0; i < p_sys->i_track; i++ )
 275     {
 276         if( p_sys->track[i]->i_id == i_id ) tk = p_sys->track[i];
 277     }
 278
 279     if( tk == NULL )
 280     {
 281         msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
 282         return 1;
 283     }
 284     es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b_selected );
 285
 286     if( tk->fmt.i_cat == VIDEO_ES && b_selected )
 287     {
 288         uint8_t *p = p_sys->buffer;
 289
 290         while( p < &p_sys->buffer[i_size - 2] )
 291         {
 292             uint8_t h = *p++;
 293             int     i_len = 0;
 294             int     i_copy;
 295             int     i_subseq = 0;
 296             int     i_seqnum = 0;
 297             int     i_offset = 0;
 298
 299             if( (h&0xc0) == 0x40 )
 300             {
 301                 /* Short header */
 302                 p++;
 303                 i_len = &p_sys->buffer[i_size] - p;
 304             }
 305             else
 306             {
 307                 if( (h&0x40) == 0 )
 308                 {
 309                     i_subseq = (*p++)&0x7f;
 310                 }
 311                 i_len = (p[0] << 8)|p[1]; p += 2;
 312                 if( (i_len&0xc000) == 0 )
 313                 {
 314                     i_len <<= 16;
 315                     i_len |= (p[0] << 8)|p[1]; p += 2;
 316                     i_len &= 0x3fffffff;
 317                 }
 318                 else
 319                 {
 320                     i_len &= 0x3fff;
 321                 }
 322
 323                 i_offset = (p[0] << 8)|p[1]; p += 2;
 324                 if( (i_offset&0xc000) == 0 )
 325                 {
 326                     i_offset <<= 16;
 327                     i_offset |= (p[0] << 8)|p[1]; p += 2;
 328                     i_offset &= 0x3fffffff;
 329                 }
 330                 else
 331                 {
 332                     i_offset &= 0x3fff;
 333                 }
 334                 i_seqnum = *p++;
 335             }
 336
 337             i_copy = i_len - i_offset;
 338             if( i_copy > &p_sys->buffer[i_size] - p )
 339             {
 340                 i_copy = &p_sys->buffer[i_size] - p;
 341             }
 342             else if( i_copy < 0 )
 343             {
 344                 break;
 345             }
 346
 347             msg_Dbg( p_demux, "    - len=%d offset=%d size=%d subseq=%d seqnum=%d",
 348                      i_len, i_offset, i_copy, i_subseq, i_seqnum );
 349
 350             if( (h&0xc0) == 0x80 )
 351             {
 352                 /* last fragment -> fixes */
 353                 i_copy = i_offset;
 354                 i_offset = i_len - i_copy;
 355                 msg_Dbg( p_demux, "last fixing copy=%d offset=%d",
 356                          i_copy, i_offset );
 357             }
 358
 359             if( tk->p_frame &&
 360                 ( tk->p_frame->i_dts != i_pts ||
 361                   tk->i_frame != i_len ) )
 362             {
 363                 msg_Dbg( p_demux, "sending size=%d", tk->p_frame->i_buffer );
 364
 365                 es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 366
 367                 tk->i_frame = 0;
 368                 tk->p_frame = NULL;
 369             }
 370
 371             if( (h&0xc0) != 0x80 && (h&0xc0) != 0x00 && !tk->p_frame )
 372             {
 373                 /* no fragment */
 374                 i_len = i_copy;
 375                 i_offset = 0;
 376             }
 377
 378
 379             if( tk->p_frame == NULL )
 380             {
 381                 msg_Dbg( p_demux, "new frame size=%d", i_len );
 382                 tk->i_frame = i_len;
 383                 if( !( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) )
 384                 {
 385                     return -1;
 386                 }
 387                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 388                 tk->p_frame->i_dts = i_pts;
 389                 tk->p_frame->i_pts = i_pts;
 390
 391                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 392                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 0;      /* chunk counts */
 393             }
 394
 395             if( i_offset < tk->i_frame)
 396             {
 397                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 398
 399                 msg_Dbg( p_demux, "copying new buffer n=%d offset=%d copy=%d",
 400                          i_ck, i_offset, i_copy );
 401
 402                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck*2 +0 ] = 1;
 403                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck*2 +1 ] = i_offset;
 404
 405
 406                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 407             }
 408
 409             p += i_copy;
 410
 411             if( (h&0xc0) != 0x80 )
 412             {
 413                 break;
 414             }
 415
 416 #if 0
 417             if( tk->p_frame )
 418             {
 419                 /* append data */
 420                 int i_ck = ((uint32_t*)tk->p_frame->p_buffer)[1]++;
 421
 422                 if( (h&0xc0) == 0x80 )
 423                 {
 424                     /* last fragment */
 425                     i_copy = i_offset;
 426                     i_offset = i_len - i_offset;
 427
 428                     ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 429                     memcpy( &tk->p_frame->p_buffer[i_offset+ 8], p, i_copy );
 430                     p += i_copy;
 431
 432                     if( p_sys->i_pcr < tk->p_frame->i_dts )
 433                     {
 434                         p_sys->i_pcr = tk->p_frame->i_dts;
 435                         es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 436                                         (int64_t)p_sys->i_pcr );
 437                     }
 438                     es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
 439
 440                     tk->i_frame = 0;
 441                     tk->p_frame = NULL;
 442
 443                     continue;
 444                 }
 445
 446                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[i_ck] = i_offset;
 447                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 448                 break;
 449             }
 450
 451             if( (h&0xc0) != 0x00 )
 452             {
 453                 block_t *p_frame;
 454
 455                 /* not fragmented */
 456                 if( !( p_frame = block_New( p_demux, i_copy + 8 + 8 ) ) )
 457                 {
 458                     return -1;
 459                 }
 460                 p_frame->i_dts = i_pts;
 461                 p_frame->i_pts = i_pts;
 462
 463                 ((uint32_t*)p_frame->p_buffer)[0] = i_copy;
 464                 ((uint32_t*)p_frame->p_buffer)[1] = 1;
 465                 ((uint32_t*)(p_frame->p_buffer+i_copy+8))[0] = 0;
 466                 memcpy( &p_frame->p_buffer[8], p, i_copy );
 467
 468                 p += i_copy;
 469
 470                 if( p_sys->i_pcr < p_frame->i_dts )
 471                 {
 472                     p_sys->i_pcr = p_frame->i_dts;
 473                     es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 474                                     (int64_t)p_sys->i_pcr );
 475                 }
 476                 es_out_Send( p_demux->out, tk->p_es, p_frame );
 477             }
 478             else
 479             {
 480                 /* First fragment */
 481                 tk->i_frame = i_len;
 482                 if( !( tk->p_frame = block_New( p_demux, i_len + 8 + 1000) ) )
 483                 {
 484                     return -1;
 485                 }
 486                 memset( &tk->p_frame->p_buffer[8], 0, i_len );
 487                 tk->p_frame->i_dts = i_pts;
 488                 tk->p_frame->i_pts = i_pts;
 489
 490                 ((uint32_t*)tk->p_frame->p_buffer)[0] = i_len;  /* len */
 491                 ((uint32_t*)tk->p_frame->p_buffer)[1] = 1;      /* chunk counts */
 492                 ((uint32_t*)(tk->p_frame->p_buffer+i_len+8))[0] = i_offset;
 493                 memcpy( &tk->p_frame->p_buffer[i_offset + 8], p, i_copy );
 494
 495                 break;
 496             }
 497 #endif
 498         }
 499     }
 500     else if( tk->fmt.i_cat == AUDIO_ES && b_selected )
 501     {
 502         if( tk->fmt.i_codec == VLC_FOURCC( 'c', 'o', 'o', 'k' ) ||
 503             tk->fmt.i_codec == VLC_FOURCC( 'a', 't', 'r', 'c') ||
 504             tk->fmt.i_codec == VLC_FOURCC( 's', 'i', 'p', 'r') ||
 505             tk->fmt.i_codec == VLC_FOURCC( '2', '8', '_', '8') )
 506         {
 507             uint8_t *p_buf = p_sys->buffer;
 508             int y = tk->i_subpacket / ( tk->i_frame_size /tk->i_subpacket_size);
 509             int i_index, i;
 510
 511             /* Sanity check */
 512             if( i_flags & 2 ) y = tk->i_subpacket = 0;
 513
 514             if( tk->fmt.i_codec == VLC_FOURCC( 'c', 'o', 'o', 'k' ) ||
 515                 tk->fmt.i_codec == VLC_FOURCC( 'a', 't', 'r', 'c' ))
 516             for( i = 0; i < tk->i_frame_size / tk->i_subpacket_size; i++ )
 517             {
 518                 block_t *p_block = block_New( p_demux, tk->i_subpacket_size );
 519                 memcpy( p_block->p_buffer, p_buf, tk->i_subpacket_size );
 520                 p_buf += tk->i_subpacket_size;
 521
 522                 i_index = tk->i_subpacket_h * i +
 523                     ((tk->i_subpacket_h + 1) / 2) * (y&1) + (y>>1);
 524
 525                 p_block->i_dts = p_block->i_pts = i_pts;
 526                 tk->p_subpackets[i_index] = p_block;
 527                 tk->i_subpacket++;
 528             }
 529
 530             if( tk->fmt.i_codec == VLC_FOURCC( '2', '8', '_', '8' ) ||
 531                 tk->fmt.i_codec == VLC_FOURCC( 's', 'i', 'p', 'r' ) )
 532             for( i = 0; i < tk->i_subpacket_h / 2; i++ )
 533             {
 534                 block_t *p_block = block_New( p_demux, tk->i_coded_frame_size);
 535                 memcpy( p_block->p_buffer, p_buf, tk->i_coded_frame_size );
 536                 p_buf += tk->i_coded_frame_size;
 537
 538                 i_index = (i * 2 * tk->i_frame_size) /
 539                     tk->i_coded_frame_size + y;
 540
 541                 p_block->i_dts = p_block->i_pts = i_pts;
 542                 tk->p_subpackets[i_index] = p_block;
 543                 tk->i_subpacket++;
 544             }
 545
 546             while( tk->i_out_subpacket != tk->i_subpackets &&
 547                    tk->p_subpackets[tk->i_out_subpacket] )
 548             {
 549                 /* Set the PCR */
 550                 if (tk->i_out_subpacket == 0)
 551                 {
 552                     p_sys->i_pcr = tk->p_subpackets[tk->i_out_subpacket]->i_dts;
 553                     es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 554                             (int64_t)p_sys->i_pcr );
 555                 }
 556
 557                 block_t *p_block = tk->p_subpackets[tk->i_out_subpacket];
 558                 tk->p_subpackets[tk->i_out_subpacket] = 0;
 559
 560                 if( tk->i_out_subpacket ) p_block->i_dts = p_block->i_pts = 0;
 561                 es_out_Send( p_demux->out, tk->p_es, p_block );
 562
 563                 tk->i_out_subpacket++;
 564             }
 565
 566             if( tk->i_subpacket == tk->i_subpackets &&
 567                 tk->i_out_subpacket != tk->i_subpackets )
 568             {
 569                 msg_Warn( p_demux, "i_subpacket != i_out_subpacket, "
 570                           "this shouldn't happen" );
 571             }
 572
 573             if( tk->i_subpacket == tk->i_subpackets )
 574             {
 575                 tk->i_subpacket = 0;
 576                 tk->i_out_subpacket = 0;
 577             }
 578         }
 579         else
 580         {
 581             /* Set PCR */
 582             if( p_sys->i_pcr < i_pts )
 583             {
 584                 p_sys->i_pcr = i_pts;
 585                 es_out_Control( p_demux->out, ES_OUT_SET_PCR,
 586                         (int64_t)p_sys->i_pcr );
 587             }
 588
 589             if( tk->fmt.i_codec == VLC_FOURCC( 'm','p','4','a' ) )
 590             {
 591                 int     i_sub = (p_sys->buffer[1] >> 4)&0x0f;
 592                 uint8_t *p_sub = &p_sys->buffer[2+2*i_sub];
 593
 594                 int i;
 595                 for( i = 0; i < i_sub; i++ )
 596                 {
 597                     int i_sub_size = GetWBE( &p_sys->buffer[2+i*2]);
 598                     block_t *p_block = block_New( p_demux, i_sub_size );
 599                     if( p_block )
 600                     {
 601                         memcpy( p_block->p_buffer, p_sub, i_sub_size );
 602                         p_sub += i_sub_size;
 603
 604                         p_block->i_dts =
 605                             p_block->i_pts = ( i == 0 ? i_pts : 0 );
 606
 607                         es_out_Send( p_demux->out, tk->p_es, p_block );
 608                     }
 609                 }
 610             }
 611             else
 612             {
 613                 block_t *p_block = block_New( p_demux, i_size );
 614
 615                 if( tk->fmt.i_codec == VLC_FOURCC( 'a', '5', '2', ' ' ) )
 616                 {
 617                     uint8_t *src = p_sys->buffer;
 618                     uint8_t *dst = p_block->p_buffer;
 619
 620                     /* byte swap data */
 621                     while( dst < &p_block->p_buffer[i_size- 1])
 622                     {
 623                         *dst++ = src[1];
 624                         *dst++ = src[0];
 625
 626                         src += 2;
 627                     }
 628                 }
 629                 else
 630                 {
 631                     memcpy( p_block->p_buffer, p_sys->buffer, i_size );
 632                 }
 633                 p_block->i_dts = p_block->i_pts = i_pts;
 634                 es_out_Send( p_demux->out, tk->p_es, p_block );
 635             }
 636         }
 637     }
 638
 639
 640     return 1;
 641 }
 642
 643 /*****************************************************************************
 644  * Control:
 645  *****************************************************************************/
 646 static int Control( demux_t *p_demux, int i_query, va_list args )
 647 {
 648     demux_sys_t *p_sys = p_demux->p_sys;
 649 #if 0
 650     double f, *pf;
 651     int64_t i64;
 652 #endif
 653     int64_t *pi64;
 654
 655     switch( i_query )
 656     {
 657 #if 0
 658         case DEMUX_GET_POSITION:
 659             pf = (double*) va_arg( args, double* );
 660             i64 = stream_Size( p_demux->s );
 661             if( i64 > 0 )
 662             {
 663                 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
 664             }
 665             else
 666             {
 667                 *pf = 0.0;
 668             }
 669             return VLC_SUCCESS;
 670
 671         case DEMUX_SET_POSITION:
 672             f = (double) va_arg( args, double );
 673             i64 = stream_Size( p_demux->s );
 674
 675             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 676
 677             return stream_Seek( p_demux->s, (int64_t)(i64 * f) );
 678
 679         case DEMUX_GET_TIME:
 680             pi64 = (int64_t*)va_arg( args, int64_t * );
 681             if( p_sys->i_mux_rate > 0 )
 682             {
 683                 *pi64 = (int64_t)1000000 * ( stream_Tell( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 684                 return VLC_SUCCESS;
 685             }
 686             *pi64 = 0;
 687             return VLC_EGENERIC;
 688 #endif
 689
 690         case DEMUX_GET_LENGTH:
 691             pi64 = (int64_t*)va_arg( args, int64_t * );
 692
 693             /* the commented following lines are fen's implementation, which doesn't seem to
 694              * work for one reason or another -- FK */
 695             /*if( p_sys->i_mux_rate > 0 )
 696             {
 697                 *pi64 = (int64_t)1000000 * ( stream_Size( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
 698                 return VLC_SUCCESS;
 699             }*/
 700             if( p_sys->i_our_duration > 0 )
 701             {
 702                 /* our stored duration is in ms, so... */
 703                 *pi64 = (int64_t)1000 * p_sys->i_our_duration;
 704
 705                 return VLC_SUCCESS;
 706             }
 707             *pi64 = 0;
 708             return VLC_EGENERIC;
 709
 710         case DEMUX_GET_META:
 711         {
 712             vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
 713
 714             /* the core will crash if we provide NULL strings, so check
 715              * every string first */
 716             if( p_sys->psz_title )
 717                 vlc_meta_SetTitle( p_meta, p_sys->psz_title );
 718             if( p_sys->psz_artist )
 719                 vlc_meta_SetArtist( p_meta, p_sys->psz_artist );
 720             if( p_sys->psz_copyright )
 721                 vlc_meta_SetCopyright( p_meta, p_sys->psz_copyright );
 722             if( p_sys->psz_description )
 723                 vlc_meta_SetDescription( p_meta, p_sys->psz_description );
 724             return VLC_SUCCESS;
 725         }
 726
 727         case DEMUX_SET_TIME:
 728         case DEMUX_GET_FPS:
 729         default:
 730             return VLC_EGENERIC;
 731     }
 732     return VLC_EGENERIC;
 733 }
 734
 735 /*****************************************************************************
 736  * HeaderRead:
 737  *****************************************************************************/
 738 static int HeaderRead( demux_t *p_demux )
 739 {
 740     demux_sys_t *p_sys = p_demux->p_sys;
 741     uint8_t header[100];    /* FIXME */
 742
 743     uint32_t    i_id;
 744     uint32_t    i_size;
 745     int64_t     i_skip;
 746     int         i_version;
 747
 748     for( ;; )
 749     {
 750         /* Read the header */
 751         if( stream_Read( p_demux->s, header, 10 ) < 10 )
 752         {
 753             return VLC_EGENERIC;
 754         }
 755         i_id        = VLC_FOURCC( header[0], header[1], header[2], header[3] );
 756         i_size      = GetDWBE( &header[4] );
 757         i_version   = GetWBE( &header[8] );
 758
 759         msg_Dbg( p_demux, "object %4.4s size=%d version=%d",
 760                  (char*)&i_id, i_size, i_version );
 761
 762         if( i_size < 10 && i_id != VLC_FOURCC('D','A','T','A') )
 763         {
 764             msg_Dbg( p_demux, "invalid size for object %4.4s", (char*)&i_id );
 765             return VLC_EGENERIC;
 766         }
 767         i_skip = i_size - 10;
 768
 769         if( i_id == VLC_FOURCC('.','R','M','F') )
 770         {
 771             if( stream_Read( p_demux->s, header, 8 ) < 8 ) return VLC_EGENERIC;
 772             msg_Dbg( p_demux, "    - file version=0x%x num headers=%d",
 773                      GetDWBE( &header[0] ), GetDWBE( &header[4] ) );
 774
 775             i_skip -= 8;
 776         }
 777         else if( i_id == VLC_FOURCC('P','R','O','P') )
 778         {
 779             int i_flags;
 780
 781             if( stream_Read(p_demux->s, header, 40) < 40 ) return VLC_EGENERIC;
 782
 783             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 784                      GetDWBE(&header[0]), GetDWBE(&header[4]) );
 785             msg_Dbg( p_demux, "    - max packet size=%d avg bitrate=%d",
 786                      GetDWBE(&header[8]), GetDWBE(&header[12]) );
 787             msg_Dbg( p_demux, "    - packets count=%d", GetDWBE(&header[16]) );
 788             msg_Dbg( p_demux, "    - duration=%d ms", GetDWBE(&header[20]) );
 789             msg_Dbg( p_demux, "    - preroll=%d ms", GetDWBE(&header[24]) );
 790             msg_Dbg( p_demux, "    - index offset=%d", GetDWBE(&header[28]) );
 791             msg_Dbg( p_demux, "    - data offset=%d", GetDWBE(&header[32]) );
 792             msg_Dbg( p_demux, "    - num streams=%d", GetWBE(&header[36]) );
 793
 794             /* set the duration for export in control */
 795             p_sys->i_our_duration = (int)GetDWBE(&header[20]);
 796
 797             i_flags = GetWBE(&header[38]);
 798             msg_Dbg( p_demux, "    - flags=0x%x %s%s%s",
 799                      i_flags,
 800                      i_flags&0x0001 ? "PN_SAVE_ENABLED " : "",
 801                      i_flags&0x0002 ? "PN_PERFECT_PLAY_ENABLED " : "",
 802                      i_flags&0x0004 ? "PN_LIVE_BROADCAST" : "" );
 803             i_skip -= 40;
 804         }
 805         else if( i_id == VLC_FOURCC('C','O','N','T') )
 806         {
 807             int i_len;
 808             char *psz;
 809
 810             /* FIXME FIXME: should convert from whatever the character
 811              * encoding of the input meta data is to UTF-8. */
 812
 813             stream_Read( p_demux->s, header, 2 );
 814             if( ( i_len = GetWBE( header ) ) > 0 )
 815             {
 816                 psz = malloc( i_len + 1 );
 817                 stream_Read( p_demux->s, psz, i_len );
 818                 psz[i_len] = '\0';
 819
 820                 EnsureUTF8( psz );
 821                 msg_Dbg( p_demux, "    - title=`%s'", psz );
 822                 p_sys->psz_title = psz;
 823                 i_skip -= i_len;
 824             }
 825             i_skip -= 2;
 826
 827             stream_Read( p_demux->s, header, 2 );
 828             if( ( i_len = GetWBE( header ) ) > 0 )
 829             {
 830                 psz = malloc( i_len + 1 );
 831                 stream_Read( p_demux->s, psz, i_len );
 832                 psz[i_len] = '\0';
 833
 834                 EnsureUTF8( psz );
 835                 msg_Dbg( p_demux, "    - author=`%s'", psz );
 836                 p_sys->psz_artist = psz;
 837                 i_skip -= i_len;
 838             }
 839             i_skip -= 2;
 840
 841             stream_Read( p_demux->s, header, 2 );
 842             if( ( i_len = GetWBE( header ) ) > 0 )
 843             {
 844                 psz = malloc( i_len + 1 );
 845                 stream_Read( p_demux->s, psz, i_len );
 846                 psz[i_len] = '\0';
 847
 848                 EnsureUTF8( psz );
 849                 msg_Dbg( p_demux, "    - copyright=`%s'", psz );
 850                 p_sys->psz_copyright = psz;
 851                 i_skip -= i_len;
 852             }
 853             i_skip -= 2;
 854
 855             stream_Read( p_demux->s, header, 2 );
 856             if( ( i_len = GetWBE( header ) ) > 0 )
 857             {
 858                 psz = malloc( i_len + 1 );
 859                 stream_Read( p_demux->s, psz, i_len );
 860                 psz[i_len] = '\0';
 861
 862                 EnsureUTF8( psz );
 863                 msg_Dbg( p_demux, "    - comment=`%s'", psz );
 864                 p_sys->psz_description = psz;
 865                 i_skip -= i_len;
 866             }
 867             i_skip -= 2;
 868         }
 869         else if( i_id == VLC_FOURCC('M','D','P','R') )
 870         {
 871             /* Media properties header */
 872             int  i_num;
 873             int  i_len;
 874             char *psz;
 875
 876             if( stream_Read(p_demux->s, header, 30) < 30 ) return VLC_EGENERIC;
 877             i_num = GetWBE( header );
 878             msg_Dbg( p_demux, "    - id=0x%x", i_num );
 879             msg_Dbg( p_demux, "    - max bitrate=%d avg bitrate=%d",
 880                      GetDWBE(&header[2]), GetDWBE(&header[6]) );
 881             msg_Dbg( p_demux, "    - max packet size=%d avg packet size=%d",
 882                      GetDWBE(&header[10]), GetDWBE(&header[14]) );
 883             msg_Dbg( p_demux, "    - start time=%d", GetDWBE(&header[18]) );
 884             msg_Dbg( p_demux, "    - preroll=%d", GetDWBE(&header[22]) );
 885             msg_Dbg( p_demux, "    - duration=%d", GetDWBE(&header[26]) );
 886
 887             i_skip -= 30;
 888
 889             stream_Read( p_demux->s, header, 1 );
 890             if( ( i_len = header[0] ) > 0 )
 891             {
 892                 psz = malloc( i_len + 1 );
 893                 stream_Read( p_demux->s, psz, i_len );
 894                 psz[i_len] = '\0';
 895
 896                 msg_Dbg( p_demux, "    - name=`%s'", psz );
 897                 free( psz );
 898                 i_skip -= i_len;
 899             }
 900             i_skip--;
 901
 902             stream_Read( p_demux->s, header, 1 );
 903             if( ( i_len = header[0] ) > 0 )
 904             {
 905                 psz = malloc( i_len + 1 );
 906                 stream_Read( p_demux->s, psz, i_len );
 907                 psz[i_len] = '\0';
 908
 909                 msg_Dbg( p_demux, "    - mime=`%s'", psz );
 910                 free( psz );
 911                 i_skip -= i_len;
 912             }
 913             i_skip--;
 914
 915             stream_Read( p_demux->s, header, 4 );
 916             if( ( i_len = GetDWBE( header ) ) > 0 )
 917             {
 918                 ReadCodecSpecificData( p_demux, i_len, i_num );
 919                 stream_Read( p_demux->s, NULL, i_len );
 920
 921                 i_skip -= i_len;
 922             }
 923             i_skip -= 4;
 924         }
 925         else if( i_id == VLC_FOURCC('D','A','T','A') )
 926         {
 927             stream_Read( p_demux->s, header, 8 );
 928
 929             p_sys->i_data_offset    = stream_Tell( p_demux->s ) - 10;
 930             p_sys->i_data_size      = i_size;
 931             p_sys->i_data_packets_count = GetDWBE( header );
 932             p_sys->i_data_packets   = 0;
 933             p_sys->i_data_offset_next = GetDWBE( &header[4] );
 934
 935             msg_Dbg( p_demux, "    - packets count=%d next=%u",
 936                      p_sys->i_data_packets_count,
 937                      (uint32_t)p_sys->i_data_offset_next );
 938
 939             /* we have finished the header */
 940             break;
 941         }
 942         else
 943         {
 944             /* unknow header */
 945             msg_Dbg( p_demux, "unknown chunk" );
 946         }
 947
 948         if( i_skip < 0 ) return VLC_EGENERIC;
 949         stream_Read( p_demux->s, NULL, i_skip );
 950     }
 951
 952     /* TODO read index if possible */
 953
 954     return VLC_SUCCESS;
 955 }
 956
 957 static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
 958 {
 959     demux_sys_t *p_sys = p_demux->p_sys;
 960     es_format_t fmt;
 961     real_track_t *tk;
 962     const uint8_t *p_peek;
 963
 964     msg_Dbg( p_demux, "    - specific data len=%d", i_len );
 965     if( stream_Peek(p_demux->s, &p_peek, i_len) < i_len ) return VLC_EGENERIC;
 966
 967     if( ( i_len >= 8 ) && !memcmp( &p_peek[4], "VIDO", 4 ) )
 968     {
 969         es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC( p_peek[8], p_peek[9],
 970                         p_peek[10], p_peek[11] ) );
 971         fmt.video.i_width = GetWBE( &p_peek[12] );
 972         fmt.video.i_height= GetWBE( &p_peek[14] );
 973
 974         fmt.i_extra = 8;
 975         fmt.p_extra = malloc( 8 );
 976         ((uint32_t*)fmt.p_extra)[0] = GetDWBE( &p_peek[26] );
 977         ((uint32_t*)fmt.p_extra)[1] = GetDWBE( &p_peek[30] );
 978
 979         msg_Dbg( p_demux, "    - video 0x%08x 0x%08x",
 980                  ((uint32_t*)fmt.p_extra)[0], ((uint32_t*)fmt.p_extra)[1] );
 981
 982         if( GetDWBE( &p_peek[30] ) == 0x10003000 ||
 983             GetDWBE( &p_peek[30] ) == 0x10003001 )
 984         {
 985             fmt.i_codec = VLC_FOURCC( 'R','V','1','3' );
 986         }
 987         else if( GetDWBE( &p_peek[30] ) == 0x20001000 ||
 988                  GetDWBE( &p_peek[30] ) == 0x20100001 ||
 989                  GetDWBE( &p_peek[30] ) == 0x20200002 )
 990         {
 991             fmt.i_codec = VLC_FOURCC( 'R','V','2','0' );
 992         }
 993         else if( GetDWBE( &p_peek[30] ) == 0x30202002 )
 994         {
 995             fmt.i_codec = VLC_FOURCC( 'R','V','3','0' );
 996         }
 997         else if( GetDWBE( &p_peek[30] ) == 0x40000000 )
 998         {
 999             fmt.i_codec = VLC_FOURCC( 'R','V','4','0' );
1000         }
1001
1002         msg_Dbg( p_demux, "    - video %4.4s %dx%d",
1003                  (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
1004
1005         tk = malloc( sizeof( real_track_t ) );
1006         tk->i_out_subpacket = 0;
1007         tk->i_subpacket = 0;
1008         tk->i_subpackets = 0;
1009         tk->p_subpackets = NULL;
1010         tk->i_id = i_num;
1011         tk->fmt = fmt;
1012         tk->i_frame = 0;
1013         tk->p_frame = NULL;
1014         tk->p_es = es_out_Add( p_demux->out, &fmt );
1015
1016         TAB_APPEND( p_sys->i_track, p_sys->track, tk );
1017     }
1018     else if( !strncmp( (char *)p_peek, ".ra\xfd", 4 ) )
1019     {
1020         int i_header_size, i_flavor, i_coded_frame_size, i_subpacket_h;
1021         int i_frame_size, i_subpacket_size;
1022         char p_genr[4];
1023         int i_version = GetWBE( &p_peek[4] );   /* [0..3] = '.','r','a',0xfd */
1024         msg_Dbg( p_demux, "    - audio version=%d", i_version );
1025
1026         p_peek += 6;                                          /* 4 + version */
1027         es_format_Init( &fmt, AUDIO_ES, 0 );
1028
1029         if( i_version == 3 )
1030         {
1031             int i_len;
1032             char *psz;
1033
1034             i_header_size = GetWBE( p_peek ); p_peek += 2;  /* Size from now */
1035             p_peek += 10;                                         /* Unknown */
1036
1037             p_peek += 4;                                        /* Data Size */
1038
1039             /* Title */
1040             i_len = *p_peek ; p_peek++;
1041             if( i_len > 0 )
1042             {
1043                 psz = malloc( i_len + 1 );
1044                 memcpy( psz, p_peek, i_len );
1045                 psz[i_len] = '\0';
1046
1047                 EnsureUTF8( psz );
1048                 msg_Dbg( p_demux, "    - title=`%s'", psz );
1049                 p_sys->psz_title = psz;
1050             }
1051             p_peek += i_len;
1052
1053             /* Authors */
1054             i_len = *p_peek ; p_peek++;
1055             if( i_len > 0 )
1056             {
1057                 psz = malloc( i_len + 1 );
1058                 memcpy( psz, p_peek, i_len );
1059                 psz[i_len] = '\0';
1060
1061                 EnsureUTF8( psz );
1062                 msg_Dbg( p_demux, "    - artist=`%s'", psz );
1063                 p_sys->psz_artist = psz;
1064             }
1065             p_peek += i_len;
1066
1067             /* Copyright */
1068             i_len = *p_peek ; p_peek++;
1069             if( i_len > 0 )
1070             {
1071                 psz = malloc( i_len + 1 );
1072                 memcpy( psz, p_peek, i_len );
1073                 psz[i_len] = '\0';
1074
1075                 EnsureUTF8( psz );
1076                 msg_Dbg( p_demux, "    - Copyright=`%s'", psz );
1077                 p_sys->psz_copyright = psz;
1078             }
1079             p_peek += i_len;
1080
1081             /* Comment */
1082             i_len = *p_peek ; p_peek++;
1083             if( i_len > 0 )
1084             {
1085                 psz = malloc( i_len + 1 );
1086                 memcpy( psz, p_peek, i_len );
1087                 psz[i_len] = '\0';
1088
1089                 EnsureUTF8( psz );
1090                 msg_Dbg( p_demux, "    - Comment=`%s'", psz );
1091                 p_sys->psz_description = psz;
1092             }
1093             /* This might be unusefull */
1094             p_peek += i_len;
1095
1096             p_peek ++;                                           /* Unknown */
1097             p_peek ++;                                 /* FourCC length = 4 */
1098             memcpy( (char *)&fmt.i_codec, p_peek, 4 ); p_peek += 4;
1099             /* Up to here :) */
1100
1101             fmt.audio.i_channels = 1;      /* This is always the case in rm3 */
1102             fmt.audio.i_rate = 8000;
1103
1104             msg_Dbg( p_demux, "    - audio codec=%4.4s channels=%d rate=%dHz",
1105                  (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
1106         }
1107         else /* RMF version 4/5 */
1108         {
1109             p_peek += 2;                                           /* 00 00 */
1110             p_peek += 4;                                    /* .ra4 or .ra5 */
1111             p_peek += 4;                                       /* data size */
1112             p_peek += 2;                                /* version (4 or 5) */
1113             i_header_size = GetDWBE( p_peek ); p_peek += 4;   /* header size */
1114             i_flavor = GetWBE( p_peek ); p_peek += 2;        /* codec flavor */
1115             i_coded_frame_size = GetDWBE( p_peek ); p_peek += 4; /* coded frame size*/
1116             p_peek += 4;                                               /* ?? */
1117             p_peek += 4;                                               /* ?? */
1118             p_peek += 4;                                               /* ?? */
1119             i_subpacket_h = GetWBE( p_peek ); p_peek += 2;              /* 1 */
1120             i_frame_size = GetWBE( p_peek ); p_peek += 2;      /* frame size */
1121             i_subpacket_size = GetWBE( p_peek ); p_peek += 2;  /* subpacket_size */
1122             if( !i_subpacket_size || !i_frame_size || !i_coded_frame_size )
1123                  return VLC_EGENERIC;
1124             p_peek += 2;                                               /* ?? */
1125
1126             if( i_version == 5 ) p_peek += 6;                 /* 0, srate, 0 */
1127
1128             fmt.audio.i_rate = GetWBE( p_peek ); p_peek += 2; /* Sample Rate */
1129             p_peek += 2;                                               /* ?? */
1130             fmt.audio.i_bitspersample = GetWBE( p_peek ); p_peek += 2;/* Sure?*/
1131             fmt.audio.i_channels = GetWBE( p_peek ); p_peek += 2; /* Channels */
1132             fmt.audio.i_blockalign = i_frame_size;
1133
1134             if( i_version == 5 )
1135             {
1136                 memcpy( (char *)p_genr, p_peek, 4 ); p_peek += 4;    /* genr */
1137                 memcpy( (char *)&fmt.i_codec, p_peek, 4 ); p_peek += 4;
1138             }
1139             else
1140             {
1141                 p_peek += p_peek[0] + 1;                          /* descr 1 */
1142                 memcpy( (char *)&fmt.i_codec, p_peek + 1, 4 );    /* descr 2 */
1143                 p_peek += p_peek[0] + 1;
1144             }
1145
1146             msg_Dbg( p_demux, "    - audio codec=%4.4s channels=%d rate=%dHz",
1147                  (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
1148
1149             p_peek += 3;                                               /* ?? */
1150             if( i_version == 5 ) p_peek++;
1151             /* Extra Data then: DWord + byte[] */
1152             fmt.i_extra = GetDWBE( p_peek ); p_peek += 4;
1153         }
1154
1155         switch( fmt.i_codec )
1156         {
1157         case VLC_FOURCC('1','4','_','4'):
1158             /* fmt.audio.i_blockalign = 0x14 */
1159             break;
1160         case VLC_FOURCC('l','p','c','J'):
1161             /* fmt.audio.i_blockalign = 0x14 */
1162             fmt.i_codec = VLC_FOURCC( '1','4','_','4' );
1163             break;
1164
1165         case VLC_FOURCC('2','8','_','8'):
1166             fmt.i_extra = 0;
1167             fmt.audio.i_blockalign = i_coded_frame_size;
1168             break;
1169
1170         case VLC_FOURCC( 'd','n','e','t' ):
1171             fmt.i_codec = VLC_FOURCC( 'a','5','2',' ' );
1172             break;
1173
1174         case VLC_FOURCC( 'r','a','a','c' ):
1175         case VLC_FOURCC( 'r','a','c','p' ):
1176             if( fmt.i_extra > 0 ) { fmt.i_extra--; p_peek++; }
1177             if( fmt.i_extra > 0 )
1178             {
1179                 fmt.p_extra = malloc( fmt.i_extra );
1180                 memcpy( fmt.p_extra, p_peek, fmt.i_extra );
1181             }
1182
1183             fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1184             break;
1185
1186         case VLC_FOURCC('s','i','p','r'):
1187             fmt.audio.i_flavor = i_flavor;
1188         case VLC_FOURCC('c','o','o','k'):
1189         case VLC_FOURCC('a','t','r','c'):
1190             if( !memcmp( p_genr, "genr", 4 ) )
1191                 fmt.audio.i_blockalign = i_subpacket_size;
1192             else
1193                 fmt.audio.i_blockalign = i_coded_frame_size;
1194             if( !fmt.i_extra ) break;
1195             fmt.p_extra = malloc( fmt.i_extra );
1196             memcpy( fmt.p_extra, p_peek, fmt.i_extra );
1197             break;
1198
1199         case VLC_FOURCC('r','a','l','f'):
1200             msg_Dbg( p_demux, "    - audio codec not supported=%4.4s",
1201                      (char*)&fmt.i_codec );
1202             break;
1203
1204         default:
1205             msg_Dbg( p_demux, "    - unknown audio codec=%4.4s",
1206                      (char*)&fmt.i_codec );
1207             break;
1208         }
1209
1210         if( fmt.i_codec != 0 )
1211         {
1212             int i;
1213
1214             msg_Dbg( p_demux, "        - extra data=%d", fmt.i_extra );
1215
1216             tk = malloc( sizeof( real_track_t ) );
1217             tk->i_id = i_num;
1218             tk->fmt = fmt;
1219             tk->i_frame = 0;
1220             tk->p_frame = NULL;
1221
1222             tk->i_subpacket_h = i_subpacket_h;
1223             tk->i_subpacket_size = i_subpacket_size;
1224             tk->i_coded_frame_size = i_coded_frame_size;
1225             tk->i_frame_size = i_frame_size;
1226
1227             tk->i_out_subpacket = 0;
1228             tk->i_subpacket = 0;
1229             tk->i_subpackets = 0;
1230             tk->p_subpackets = NULL;
1231             if( fmt.i_codec == VLC_FOURCC('c','o','o','k')
1232              || fmt.i_codec == VLC_FOURCC('a','t','r','c') )
1233             {
1234                 tk->i_subpackets =
1235                     i_subpacket_h * i_frame_size / tk->i_subpacket_size;
1236                 tk->p_subpackets =
1237                     calloc( tk->i_subpackets, sizeof(block_t *) );
1238             }
1239             else if( fmt.i_codec == VLC_FOURCC('2','8','_','8') )
1240             {
1241                 tk->i_subpackets =
1242                     i_subpacket_h * i_frame_size / tk->i_coded_frame_size;
1243                 tk->p_subpackets =
1244                     calloc( tk->i_subpackets, sizeof(block_t *) );
1245             }
1246
1247             tk->p_es = es_out_Add( p_demux->out, &fmt );
1248
1249             TAB_APPEND( p_sys->i_track, p_sys->track, tk );
1250         }
1251     }
1252
1253     return VLC_SUCCESS;
1254 }