git.sesse.net Git - vlc/blob - modules/demux/mp4/mp4.c

   1 /*****************************************************************************
   2  * mp4.c : MP4 file input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 VideoLAN
   5  * $Id$
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #include <stdlib.h>                                      /* malloc(), free() */
  27
  28 #include <vlc/vlc.h>
  29 #include <vlc/input.h>
  30 #include <vlc_playlist.h>
  31 #include "iso_lang.h"
  32 #include "vlc_meta.h"
  33
  34 #include "libmp4.h"
  35 #include "drms.h"
  36
  37 /*****************************************************************************
  38  * Module descriptor
  39  *****************************************************************************/
  40 static int  Open ( vlc_object_t * );
  41 static void Close( vlc_object_t * );
  42
  43 vlc_module_begin();
  44     set_description( _("MP4 stream demuxer") );
  45     set_capability( "demux2", 242 );
  46     set_callbacks( Open, Close );
  47 vlc_module_end();
  48
  49 /*****************************************************************************
  50  * Local prototypes
  51  *****************************************************************************/
  52 static int    Demux   ( demux_t * );
  53 static int    DemuxRef( demux_t *p_demux )
  54 {
  55     return 0;
  56 }
  57 static int   Seek     ( demux_t *, mtime_t );
  58 static int   Control  ( demux_t *, int, va_list );
  59
  60 /* Contain all information about a chunk */
  61 typedef struct
  62 {
  63     uint64_t     i_offset; /* absolute position of this chunk in the file */
  64     uint32_t     i_sample_description_index; /* index for SampleEntry to use */
  65     uint32_t     i_sample_count; /* how many samples in this chunk */
  66     uint32_t     i_sample_first; /* index of the first sample in this chunk */
  67
  68     /* now provide way to calculate pts, dts, and offset without to
  69         much memory and with fast acces */
  70
  71     /* with this we can calculate dts/pts without waste memory */
  72     uint64_t     i_first_dts;
  73     uint32_t     *p_sample_count_dts;
  74     uint32_t     *p_sample_delta_dts; /* dts delta */
  75
  76     /* TODO if needed add pts
  77         but quickly *add* support for edts and seeking */
  78
  79 } mp4_chunk_t;
  80
  81
  82  /* Contain all needed information for read all track with vlc */
  83 typedef struct
  84 {
  85     int i_track_ID;     /* this should be unique */
  86
  87     int b_ok;           /* The track is usable */
  88     int b_enable;       /* is the trak enable by default */
  89     vlc_bool_t b_selected;     /* is the trak being played */
  90
  91     es_format_t fmt;
  92     es_out_id_t *p_es;
  93
  94     /* display size only ! */
  95     int i_width;
  96     int i_height;
  97
  98     /* more internal data */
  99     uint64_t        i_timescale;    /* time scale for this track only */
 100
 101     /* elst */
 102     int             i_elst;         /* current elst */
 103     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 104     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 105
 106     /* give the next sample to read, i_chunk is to find quickly where
 107       the sample is located */
 108     uint32_t         i_sample;       /* next sample to read */
 109     uint32_t         i_chunk;        /* chunk where next sample is stored */
 110     /* total count of chunk and sample */
 111     uint32_t         i_chunk_count;
 112     uint32_t         i_sample_count;
 113
 114     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 115
 116     /* sample size, p_sample_size defined only if i_sample_size == 0
 117         else i_sample_size is size for all sample */
 118     uint32_t         i_sample_size;
 119     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 120                                     too much time to do sumations each time*/
 121
 122     MP4_Box_t *p_stbl;  /* will contain all timing information */
 123     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 124     MP4_Box_t *p_sample;/* point on actual sdsd */
 125
 126     vlc_bool_t b_drms;
 127     void      *p_drms;
 128
 129 } mp4_track_t;
 130
 131
 132 struct demux_sys_t
 133 {
 134     MP4_Box_t    *p_root;      /* container for the whole file */
 135
 136     mtime_t      i_pcr;
 137
 138     uint64_t     i_time;        /* time position of the presentation
 139                                  * in movie timescale */
 140     uint64_t     i_timescale;   /* movie time scale */
 141     uint64_t     i_duration;    /* movie duration */
 142     unsigned int i_tracks;      /* number of tracks */
 143     mp4_track_t *track;    /* array of track */
 144 };
 145
 146
 147 /*****************************************************************************
 148  * Declaration of local function
 149  *****************************************************************************/
 150 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 151 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 152
 153 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 154 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 155
 156 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 157
 158 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 159 static int      MP4_TrackSampleSize( mp4_track_t * );
 160 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 161 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 162
 163 /* Return time in µs of a track */
 164 static inline int64_t MP4_TrackGetPTS( demux_t *p_demux, mp4_track_t *p_track )
 165 {
 166     unsigned int i_sample;
 167     unsigned int i_index;
 168     int64_t i_dts;
 169
 170     i_sample = p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first;
 171     i_dts = p_track->chunk[p_track->i_chunk].i_first_dts;
 172     i_index = 0;
 173     while( i_sample > 0 )
 174     {
 175         if( i_sample > p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index] )
 176         {
 177             i_dts += p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index] *
 178                         p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
 179             i_sample -= p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index];
 180             i_index++;
 181         }
 182         else
 183         {
 184             i_dts += i_sample *
 185                         p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
 186             i_sample = 0;
 187             break;
 188         }
 189     }
 190
 191     /* now handle elst */
 192     if( p_track->p_elst )
 193     {
 194         demux_sys_t         *p_sys = p_demux->p_sys;
 195         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 196
 197         /* convert to offset */
 198         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 199               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 200             elst->i_media_time[p_track->i_elst] > 0 )
 201         {
 202             i_dts -= elst->i_media_time[p_track->i_elst];
 203         }
 204
 205         /* add i_elst_time */
 206         i_dts += p_track->i_elst_time * p_track->i_timescale / p_sys->i_timescale;
 207
 208         if( i_dts < 0 ) i_dts = 0;
 209     }
 210
 211     return (int64_t)1000000 * i_dts / p_track->i_timescale;
 212 }
 213 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 214 {
 215     return (int64_t)1000000 * p_sys->i_time / p_sys->i_timescale;
 216 }
 217
 218 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
 219
 220 /*****************************************************************************
 221  * Open: check file and initializes MP4 structures
 222  *****************************************************************************/
 223 static int Open( vlc_object_t * p_this )
 224 {
 225     demux_t  *p_demux = (demux_t *)p_this;
 226     demux_sys_t     *p_sys;
 227
 228     uint8_t         *p_peek;
 229
 230     MP4_Box_t       *p_ftyp;
 231     MP4_Box_t       *p_rmra;
 232     MP4_Box_t       *p_mvhd;
 233     MP4_Box_t       *p_trak;
 234
 235     unsigned int    i;
 236     vlc_bool_t      b_seekable;
 237
 238     /* a little test to see if it could be a mp4 */
 239     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
 240     {
 241         msg_Warn( p_demux, "MP4 plugin discarded (cannot peek)" );
 242         return VLC_EGENERIC;
 243     }
 244     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 245     {
 246         case FOURCC_ftyp:
 247         case FOURCC_moov:
 248         case FOURCC_foov:
 249         case FOURCC_moof:
 250         case FOURCC_mdat:
 251         case FOURCC_udta:
 252         case FOURCC_free:
 253         case FOURCC_skip:
 254         case FOURCC_wide:
 255         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 256             break;
 257          default:
 258             msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 259             return VLC_EGENERIC;
 260     }
 261
 262     /* I need to seek */
 263     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 264     if( !b_seekable )
 265     {
 266         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 267         return VLC_EGENERIC;
 268     }
 269
 270     /*Set exported functions */
 271     p_demux->pf_demux = Demux;
 272     p_demux->pf_control = Control;
 273
 274     /* create our structure that will contains all data */
 275     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 276     memset( p_sys, 0, sizeof( demux_sys_t ) );
 277
 278     /* Now load all boxes ( except raw data ) */
 279     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 280     {
 281         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 282         goto error;
 283     }
 284
 285     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 286
 287     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 288     {
 289         switch( p_ftyp->data.p_ftyp->i_major_brand )
 290         {
 291             case( FOURCC_isom ):
 292                 msg_Dbg( p_demux,
 293                          "ISO Media file (isom) version %d.",
 294                          p_ftyp->data.p_ftyp->i_minor_version );
 295                 break;
 296             default:
 297                 msg_Dbg( p_demux,
 298                          "unrecognized major file specification (%4.4s).",
 299                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 300                 break;
 301         }
 302     }
 303     else
 304     {
 305         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 306     }
 307
 308     /* the file need to have one moov box */
 309     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 310     {
 311         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 312
 313         if( !p_foov )
 314         {
 315             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 316             goto error;
 317         }
 318         /* we have a free box as a moov, rename it */
 319         p_foov->i_type = FOURCC_moov;
 320     }
 321
 322     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 323     {
 324         playlist_t *p_playlist;
 325         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 326         int        i;
 327
 328         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 329
 330         p_playlist =
 331             (playlist_t *)vlc_object_find( p_demux,
 332                                            VLC_OBJECT_PLAYLIST,
 333                                            FIND_ANYWHERE );
 334         if( p_playlist )
 335         {
 336             //p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
 337             for( i = 0; i < i_count; i++ )
 338             {
 339                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 340                 char      *psz_ref;
 341                 uint32_t  i_ref_type;
 342
 343                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 344                 {
 345                     continue;
 346                 }
 347                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 348
 349                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 350                          psz_ref, (char*)&i_ref_type );
 351
 352                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 353                 {
 354                     if( strstr( psz_ref, "qt5gateQT" ) )
 355                     {
 356                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 357                         continue;
 358                     }
 359                     if( !strncmp( psz_ref, "http://", 7 ) ||
 360                         !strncmp( psz_ref, "rtsp://", 7 ) )
 361                     {
 362                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 363                         playlist_Add( p_playlist, psz_ref, psz_ref,
 364                                       PLAYLIST_APPEND, PLAYLIST_END );
 365                     }
 366                     else
 367                     {
 368                         /* msg dbg relative ? */
 369                         char *psz_absolute = alloca( strlen( p_demux->psz_access ) + 3 + strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1);
 370                         char *end = strrchr( p_demux->psz_path, '/' );
 371
 372                         if( end )
 373                         {
 374                             int i_len = end + 1 - p_demux->psz_path;
 375
 376                             strcpy( psz_absolute, p_demux->psz_access );
 377                             strcat( psz_absolute, "://" );
 378                             strncat( psz_absolute, p_demux->psz_path, i_len);
 379                         }
 380                         else
 381                         {
 382                             strcpy( psz_absolute, "" );
 383                         }
 384                         strcat( psz_absolute, psz_ref );
 385                         msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
 386                         playlist_Add( p_playlist, psz_absolute, psz_absolute,
 387                                       PLAYLIST_APPEND, PLAYLIST_END );
 388                     }
 389                 }
 390                 else
 391                 {
 392                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 393                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 394                 }
 395             }
 396             vlc_object_release( p_playlist );
 397         }
 398         else
 399         {
 400             msg_Err( p_demux, "can't find playlist" );
 401         }
 402     }
 403
 404     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 405     {
 406         if( !p_rmra )
 407         {
 408             msg_Err( p_demux, "cannot find /moov/mvhd" );
 409             goto error;
 410         }
 411         else
 412         {
 413             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 414             p_demux->pf_demux = DemuxRef;
 415             return VLC_SUCCESS;
 416         }
 417     }
 418     else
 419     {
 420         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 421         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 422     }
 423
 424     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 425     {
 426         msg_Err( p_demux, "cannot find any /moov/trak" );
 427         goto error;
 428     }
 429     msg_Dbg( p_demux, "find %d track%c",
 430                         p_sys->i_tracks,
 431                         p_sys->i_tracks ? 's':' ' );
 432
 433     /* allocate memory */
 434     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 435     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 436
 437     /* now process each track and extract all usefull information */
 438     for( i = 0; i < p_sys->i_tracks; i++ )
 439     {
 440         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 441         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 442
 443         if( p_sys->track[i].b_ok )
 444         {
 445             char *psz_cat;
 446             switch( p_sys->track[i].fmt.i_cat )
 447             {
 448                 case( VIDEO_ES ):
 449                     psz_cat = "video";
 450                     break;
 451                 case( AUDIO_ES ):
 452                     psz_cat = "audio";
 453                     break;
 454                 case( SPU_ES ):
 455                     psz_cat = "subtitle";
 456                     break;
 457
 458                 default:
 459                     psz_cat = "unknown";
 460                     break;
 461             }
 462
 463             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 464                             p_sys->track[i].i_track_ID,
 465                             psz_cat,
 466                             p_sys->track[i].b_enable ? "enable":"disable",
 467                             p_sys->track[i].fmt.psz_language ? p_sys->track[i].fmt.psz_language : "undef" );
 468         }
 469         else
 470         {
 471             msg_Dbg( p_demux, "ignoring track[Id 0x%x]", p_sys->track[i].i_track_ID );
 472         }
 473
 474     }
 475     return VLC_SUCCESS;
 476
 477 error:
 478     if( p_sys->p_root )
 479     {
 480         MP4_BoxFree( p_demux->s, p_sys->p_root );
 481     }
 482     free( p_sys );
 483     return VLC_EGENERIC;
 484 }
 485
 486 /*****************************************************************************
 487  * Demux: read packet and send them to decoders
 488  *****************************************************************************
 489  * TODO check for newly selected track (ie audio upt to now )
 490  *****************************************************************************/
 491 static int Demux( demux_t *p_demux )
 492 {
 493     demux_sys_t *p_sys = p_demux->p_sys;
 494     unsigned int i_track;
 495
 496
 497     unsigned int i_track_selected;
 498
 499     /* check for newly selected/unselected track */
 500     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 501          i_track++ )
 502     {
 503         mp4_track_t *tk = &p_sys->track[i_track];
 504
 505         if( tk->b_selected && tk->i_sample >= tk->i_sample_count )
 506         {
 507             msg_Warn( p_demux, "track[0x%x] will be disabled", tk->i_track_ID );
 508             MP4_TrackUnselect( p_demux, tk);
 509         }
 510         else if( tk->b_ok )
 511         {
 512             vlc_bool_t b;
 513             es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 514
 515             if( tk->b_selected && !b )
 516             {
 517                 MP4_TrackUnselect( p_demux, tk );
 518             }
 519             else if( !tk->b_selected && b)
 520             {
 521                 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 522             }
 523
 524             if( tk->b_selected )
 525             {
 526                 i_track_selected++;
 527             }
 528         }
 529     }
 530
 531     if( i_track_selected <= 0 )
 532     {
 533         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 534         if( p_sys->i_timescale > 0 )
 535         {
 536             int64_t i_length = (mtime_t)1000000 *
 537                                (mtime_t)p_sys->i_duration /
 538                                (mtime_t)p_sys->i_timescale;
 539             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 540                 return 0;
 541             return 1;
 542         }
 543
 544         msg_Warn( p_demux, "no track selected, exiting..." );
 545         return 0;
 546     }
 547
 548     /* first wait for the good time to read a packet */
 549     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
 550
 551     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 552
 553     /* we will read 100ms for each stream so ...*/
 554     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 555
 556     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 557     {
 558         mp4_track_t *tk = &p_sys->track[i_track];
 559
 560         if( !tk->b_ok || !tk->b_selected )
 561         {
 562             continue;
 563         }
 564
 565         while( MP4_TrackGetPTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 566         {
 567 #if 0
 568             msg_Dbg( p_demux, "tk=%lld mv=%lld",
 569                      MP4_TrackGetPTS( p_demux, tk ),
 570                      MP4_GetMoviePTS( p_sys ) );
 571 #endif
 572
 573             if( MP4_TrackSampleSize( tk ) > 0 )
 574             {
 575                 block_t *p_block;
 576
 577                 /* go,go go ! */
 578                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 579                 {
 580                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
 581                     MP4_TrackUnselect( p_demux, tk );
 582                     break;
 583                 }
 584
 585                 /* now read pes */
 586                 if( ( p_block = stream_Block( p_demux->s,
 587                                               MP4_TrackSampleSize( tk ) ) ) == NULL )
 588                 {
 589                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
 590                     MP4_TrackUnselect( p_demux, tk );
 591                     break;
 592                 }
 593
 594                 if( tk->b_drms && tk->p_drms )
 595                 {
 596                     drms_decrypt( tk->p_drms,
 597                                   (uint32_t*)p_block->p_buffer,
 598                                   p_block->i_buffer );
 599                 }
 600                 else if( tk->fmt.i_cat == SPU_ES )
 601                 {
 602                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) && p_block->i_buffer >= 2 )
 603                     {
 604                         uint16_t i_size = GetWBE( p_block->p_buffer );
 605
 606                         if( i_size + 2 <= p_block->i_buffer )
 607                         {
 608                             char *p;
 609                             /* remove the length field, and append a '\0' */
 610                             memmove( &p_block->p_buffer[0], &p_block->p_buffer[2], i_size );
 611                             p_block->p_buffer[i_size] = '\0';
 612                             p_block->i_buffer = i_size + 1;
 613
 614                             /* convert \r -> \n */
 615                             while( ( p = strchr( p_block->p_buffer, '\r' ) ) )
 616                             {
 617                                 *p = '\n';
 618                             }
 619                         }
 620                         else
 621                         {
 622                             /* Invalid */
 623                             p_block->i_buffer = 0;
 624                         }
 625                     }
 626                 }
 627                 p_block->i_dts = MP4_TrackGetPTS( p_demux, tk ) + 1;
 628                 fprintf( stderr, "dts=%lld\n", p_block->i_dts );
 629
 630                 p_block->i_pts = tk->fmt.i_cat == VIDEO_ES ? 0 : p_block->i_dts + 1;
 631
 632                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 633                 {
 634                     es_out_Send( p_demux->out, tk->p_es, p_block );
 635                 }
 636             }
 637
 638             /* Next sample */
 639             if( MP4_TrackNextSample( p_demux, tk ) )
 640             {
 641                 break;
 642             }
 643         }
 644     }
 645
 646     return 1;
 647 }
 648 /*****************************************************************************
 649  * Seek: Got to i_date
 650 ******************************************************************************/
 651 static int Seek( demux_t *p_demux, mtime_t i_date )
 652 {
 653     demux_sys_t *p_sys = p_demux->p_sys;
 654     unsigned int i_track;
 655
 656     /* First update update global time */
 657     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 658     p_sys->i_pcr  = i_date;
 659
 660     /* Now for each stream try to go to this time */
 661     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 662     {
 663         mp4_track_t *tk = &p_sys->track[i_track];
 664         MP4_TrackSeek( p_demux, tk, i_date );
 665     }
 666     return VLC_SUCCESS;
 667 }
 668
 669 /*****************************************************************************
 670  * Control:
 671  *****************************************************************************/
 672 static int Control( demux_t *p_demux, int i_query, va_list args )
 673 {
 674     demux_sys_t *p_sys = p_demux->p_sys;
 675
 676     double f, *pf;
 677     int64_t i64, *pi64;
 678
 679     switch( i_query )
 680     {
 681         case DEMUX_GET_POSITION:
 682             pf = (double*)va_arg( args, double * );
 683             if( p_sys->i_duration > 0 )
 684             {
 685                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 686             }
 687             else
 688             {
 689                 *pf = 0.0;
 690             }
 691             return VLC_SUCCESS;
 692
 693         case DEMUX_SET_POSITION:
 694             f = (double)va_arg( args, double );
 695             if( p_sys->i_timescale > 0 )
 696             {
 697                 i64 = (int64_t)( f * (double)1000000 *
 698                                  (double)p_sys->i_duration /
 699                                  (double)p_sys->i_timescale );
 700                 return Seek( p_demux, i64 );
 701             }
 702             else return VLC_SUCCESS;
 703
 704         case DEMUX_GET_TIME:
 705             pi64 = (int64_t*)va_arg( args, int64_t * );
 706             if( p_sys->i_timescale > 0 )
 707             {
 708                 *pi64 = (mtime_t)1000000 *
 709                         (mtime_t)p_sys->i_time /
 710                         (mtime_t)p_sys->i_timescale;
 711             }
 712             else *pi64 = 0;
 713             return VLC_SUCCESS;
 714
 715         case DEMUX_SET_TIME:
 716             i64 = (int64_t)va_arg( args, int64_t );
 717             return Seek( p_demux, i64 );
 718
 719         case DEMUX_GET_LENGTH:
 720             pi64 = (int64_t*)va_arg( args, int64_t * );
 721             if( p_sys->i_timescale > 0 )
 722             {
 723                 *pi64 = (mtime_t)1000000 *
 724                         (mtime_t)p_sys->i_duration /
 725                         (mtime_t)p_sys->i_timescale;
 726             }
 727             else *pi64 = 0;
 728             return VLC_SUCCESS;
 729
 730         case DEMUX_GET_FPS:
 731             msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
 732             return VLC_EGENERIC;
 733
 734         case DEMUX_GET_META:
 735         {
 736             vlc_meta_t **pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
 737             vlc_meta_t *meta;
 738             MP4_Box_t  *p_udta   = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 739             MP4_Box_t  *p_0xa9xxx;
 740             if( p_udta == NULL )
 741             {
 742                 return VLC_EGENERIC;
 743             }
 744             *pp_meta = meta = vlc_meta_New();
 745             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 746                  p_0xa9xxx = p_0xa9xxx->p_next )
 747             {
 748                 switch( p_0xa9xxx->i_type )
 749                 {
 750                 case FOURCC_0xa9nam:
 751                     vlc_meta_Add( meta, VLC_META_TITLE,
 752                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 753                     break;
 754                 case FOURCC_0xa9aut:
 755                     vlc_meta_Add( meta, VLC_META_AUTHOR,
 756                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 757                     break;
 758                 case FOURCC_0xa9ART:
 759                     vlc_meta_Add( meta, VLC_META_ARTIST,
 760                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 761                     break;
 762                 case FOURCC_0xa9cpy:
 763                     vlc_meta_Add( meta, VLC_META_COPYRIGHT,
 764                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 765                     break;
 766                 case FOURCC_0xa9day:
 767                     vlc_meta_Add( meta, VLC_META_DATE,
 768                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 769                     break;
 770                 case FOURCC_0xa9des:
 771                     vlc_meta_Add( meta, VLC_META_DESCRIPTION,
 772                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 773                     break;
 774
 775                 case FOURCC_0xa9swr:
 776                 case FOURCC_0xa9inf:
 777                 case FOURCC_0xa9dir:
 778                 case FOURCC_0xa9cmt:
 779                 case FOURCC_0xa9req:
 780                 case FOURCC_0xa9fmt:
 781                 case FOURCC_0xa9prd:
 782                 case FOURCC_0xa9prf:
 783                 case FOURCC_0xa9src:
 784                     /* TODO one day, but they aren't really meaningfull */
 785                     break;
 786
 787                 default:
 788                     break;
 789                 }
 790             }
 791             return VLC_SUCCESS;
 792         }
 793
 794         case DEMUX_GET_TITLE_INFO:
 795         case DEMUX_SET_NEXT_DEMUX_TIME:
 796         case DEMUX_SET_GROUP:
 797             return VLC_EGENERIC;
 798
 799         default:
 800             msg_Warn( p_demux, "control query unimplemented !!!" );
 801             return VLC_EGENERIC;
 802     }
 803 }
 804
 805 /*****************************************************************************
 806  * Close: frees unused data
 807  *****************************************************************************/
 808 static void Close ( vlc_object_t * p_this )
 809 {
 810     unsigned int i_track;
 811     demux_t *  p_demux = (demux_t *)p_this;
 812     demux_sys_t *p_sys = p_demux->p_sys;
 813
 814     msg_Dbg( p_demux, "freeing all memory" );
 815
 816     MP4_BoxFree( p_demux->s, p_sys->p_root );
 817     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 818     {
 819         MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
 820     }
 821     FREE( p_sys->track );
 822
 823     free( p_sys );
 824 }
 825
 826
 827
 828 /****************************************************************************
 829  * Local functions, specific to vlc
 830  ****************************************************************************/
 831
 832 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 833 static int TrackCreateChunksIndex( demux_t *p_demux,
 834                                    mp4_track_t *p_demux_track )
 835 {
 836     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 837     MP4_Box_t *p_stsc;
 838
 839     unsigned int i_chunk;
 840     unsigned int i_index, i_last;
 841
 842     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 843           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 844         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 845     {
 846         return( VLC_EGENERIC );
 847     }
 848
 849     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 850     if( !p_demux_track->i_chunk_count )
 851     {
 852         msg_Warn( p_demux, "no chunk defined" );
 853         return( VLC_EGENERIC );
 854     }
 855     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 856                                    sizeof( mp4_chunk_t ) );
 857
 858     /* first we read chunk offset */
 859     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 860     {
 861         p_demux_track->chunk[i_chunk].i_offset =
 862                 p_co64->data.p_co64->i_chunk_offset[i_chunk];
 863     }
 864
 865     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 866         to be used for the sample XXX begin to 1
 867         We construct it begining at the end */
 868     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 869     i_index = p_stsc->data.p_stsc->i_entry_count;
 870     if( !i_index )
 871     {
 872         msg_Warn( p_demux, "cannot read chunk table or table empty" );
 873         return( VLC_EGENERIC );
 874     }
 875
 876     while( i_index )
 877     {
 878         i_index--;
 879         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 880                 i_chunk < i_last; i_chunk++ )
 881         {
 882             p_demux_track->chunk[i_chunk].i_sample_description_index =
 883                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 884             p_demux_track->chunk[i_chunk].i_sample_count =
 885                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 886         }
 887         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 888     }
 889
 890     p_demux_track->chunk[0].i_sample_first = 0;
 891     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 892     {
 893         p_demux_track->chunk[i_chunk].i_sample_first =
 894             p_demux_track->chunk[i_chunk-1].i_sample_first +
 895                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 896     }
 897
 898     msg_Dbg( p_demux,
 899              "track[Id 0x%x] read %d chunk",
 900              p_demux_track->i_track_ID,
 901              p_demux_track->i_chunk_count );
 902
 903     return( VLC_SUCCESS );
 904 }
 905 static int TrackCreateSamplesIndex( demux_t *p_demux,
 906                                     mp4_track_t *p_demux_track )
 907 {
 908     MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
 909                           ctts make same mapping but for composition time,
 910                           not yet used and probably not usefull */
 911     MP4_Box_t *p_stsz; /* gives sample size of each samples, there is also stz2
 912                           that uses a compressed form FIXME make them in libmp4
 913                           as a unique type */
 914     /* TODO use also stss and stsh table for seeking */
 915     /* FIXME use edit table */
 916     int64_t i_sample;
 917     int64_t i_chunk;
 918
 919     int64_t i_index;
 920     int64_t i_index_sample_used;
 921
 922     int64_t i_last_dts;
 923
 924     p_stts = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
 925     p_stsz = MP4_BoxGet( p_demux_track->p_stbl, "stsz" ); /* FIXME and stz2 */
 926
 927     if( ( !p_stts )||( !p_stsz ) )
 928     {
 929         msg_Warn( p_demux, "cannot read sample table" );
 930         return( VLC_EGENERIC );
 931     }
 932
 933     p_demux_track->i_sample_count = p_stsz->data.p_stsz->i_sample_count;
 934
 935
 936     /* for sample size, there are 2 case */
 937     if( p_stsz->data.p_stsz->i_sample_size )
 938     {
 939         /* 1: all sample have the same size, so no need to construct a table */
 940         p_demux_track->i_sample_size = p_stsz->data.p_stsz->i_sample_size;
 941         p_demux_track->p_sample_size = NULL;
 942     }
 943     else
 944     {
 945         /* 2: each sample can have a different size */
 946         p_demux_track->i_sample_size = 0;
 947         p_demux_track->p_sample_size =
 948             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
 949
 950         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
 951         {
 952             p_demux_track->p_sample_size[i_sample] =
 953                     p_stsz->data.p_stsz->i_entry_size[i_sample];
 954         }
 955     }
 956     /* we have extract all information from stsz,
 957         now use stts */
 958
 959     /* if we don't want to waste too much memory, we can't expand
 960        the box !, so each chunk will contain an "extract" of this table
 961        for fast research */
 962
 963     i_last_dts = 0;
 964     i_index = 0; i_index_sample_used =0;
 965
 966     /* create and init last data for each chunk */
 967     for(i_chunk = 0 ; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 968     {
 969
 970         int64_t i_entry, i_sample_count, i;
 971         /* save last dts */
 972         p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
 973     /* count how many entries needed for this chunk
 974        for p_sample_delta_dts and p_sample_count_dts */
 975
 976         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 977
 978         i_entry = 0;
 979         while( i_sample_count > 0 )
 980         {
 981             i_sample_count -= p_stts->data.p_stts->i_sample_count[i_index+i_entry];
 982             if( i_entry == 0 )
 983             {
 984                 i_sample_count += i_index_sample_used; /* don't count already used sample
 985                                                    int this entry */
 986             }
 987             i_entry++;
 988         }
 989
 990         /* allocate them */
 991         p_demux_track->chunk[i_chunk].p_sample_count_dts =
 992             calloc( i_entry, sizeof( uint32_t ) );
 993         p_demux_track->chunk[i_chunk].p_sample_delta_dts =
 994             calloc( i_entry, sizeof( uint32_t ) );
 995
 996         /* now copy */
 997         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 998         for( i = 0; i < i_entry; i++ )
 999         {
1000             int64_t i_used;
1001             int64_t i_rest;
1002
1003             i_rest = p_stts->data.p_stts->i_sample_count[i_index] - i_index_sample_used;
1004
1005             i_used = __MIN( i_rest, i_sample_count );
1006
1007             i_index_sample_used += i_used;
1008             i_sample_count -= i_used;
1009
1010             p_demux_track->chunk[i_chunk].p_sample_count_dts[i] = i_used;
1011
1012             p_demux_track->chunk[i_chunk].p_sample_delta_dts[i] =
1013                         p_stts->data.p_stts->i_sample_delta[i_index];
1014
1015             i_last_dts += i_used *
1016                     p_demux_track->chunk[i_chunk].p_sample_delta_dts[i];
1017
1018             if( i_index_sample_used >=
1019                              p_stts->data.p_stts->i_sample_count[i_index] )
1020             {
1021
1022                 i_index++;
1023                 i_index_sample_used = 0;
1024             }
1025         }
1026
1027     }
1028
1029     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1030              p_demux_track->i_track_ID,
1031              p_demux_track->i_sample_count,
1032              i_last_dts / p_demux_track->i_timescale );
1033
1034     return( VLC_SUCCESS );
1035 }
1036
1037 /*
1038  * TrackCreateES:
1039  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1040  */
1041 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1042                           unsigned int i_chunk, es_out_id_t **pp_es )
1043 {
1044     MP4_Box_t   *p_sample;
1045     MP4_Box_t   *p_esds;
1046
1047     *pp_es = NULL;
1048
1049     if( !p_track->chunk[i_chunk].i_sample_description_index )
1050     {
1051         msg_Warn( p_demux,
1052                   "invalid SampleEntry index (track[Id 0x%x])",
1053                   p_track->i_track_ID );
1054         return VLC_EGENERIC;
1055     }
1056
1057     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1058                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1059
1060     if( !p_sample || ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1061     {
1062         msg_Warn( p_demux,
1063                   "cannot find SampleEntry (track[Id 0x%x])",
1064                   p_track->i_track_ID );
1065         return( VLC_EGENERIC );
1066     }
1067
1068     p_track->p_sample = p_sample;
1069
1070     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1071     {
1072         MP4_Box_data_sample_soun_t *p_soun;
1073
1074         p_soun = p_sample->data.p_sample_soun;
1075
1076         if( p_soun->i_qt_version == 0 )
1077         {
1078             switch( p_sample->i_type )
1079             {
1080                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1081                     p_soun->i_qt_version = 1;
1082                     p_soun->i_sample_per_packet = 64;
1083                     p_soun->i_bytes_per_packet  = 34;
1084                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1085                     p_soun->i_bytes_per_sample  = 2;
1086                     break;
1087                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1088                     p_soun->i_qt_version = 1;
1089                     p_soun->i_sample_per_packet = 6;
1090                     p_soun->i_bytes_per_packet  = 2;
1091                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1092                     p_soun->i_bytes_per_sample  = 2;
1093                     break;
1094                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1095                     p_soun->i_qt_version = 1;
1096                     p_soun->i_sample_per_packet = 12;
1097                     p_soun->i_bytes_per_packet  = 2;
1098                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1099                     p_soun->i_bytes_per_sample  = 2;
1100                     break;
1101                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1102                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1103                     p_soun->i_samplesize = 8;
1104                     break;
1105                 default:
1106                     break;
1107             }
1108
1109         }
1110         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1111         {
1112             p_soun->i_qt_version = 0;
1113         }
1114     }
1115
1116
1117     /* It's a little ugly but .. there are special cases */
1118     switch( p_sample->i_type )
1119     {
1120         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1121         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1122             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1123             break;
1124         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1125             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1126             break;
1127         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1128             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1129             break;
1130
1131         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1132             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1133             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1134             /* FIXME UTF-8 doesn't work here ? */
1135             /* p_track->fmt.subs.psz_encoding = strdup( "UTF-8" ); */
1136             break;
1137
1138         default:
1139             p_track->fmt.i_codec = p_sample->i_type;
1140             break;
1141     }
1142
1143     /* now see if esds is present and if so create a data packet
1144         with decoder_specific_info  */
1145 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1146     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1147           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1148         ( p_esds->data.p_esds )&&
1149         ( p_decconfig ) )
1150     {
1151         /* First update information based on i_objectTypeIndication */
1152         switch( p_decconfig->i_objectTypeIndication )
1153         {
1154             case( 0x20 ): /* MPEG4 VIDEO */
1155                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1156                 break;
1157             case( 0x40):
1158                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1159                 break;
1160             case( 0x60):
1161             case( 0x61):
1162             case( 0x62):
1163             case( 0x63):
1164             case( 0x64):
1165             case( 0x65): /* MPEG2 video */
1166                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1167                 break;
1168             /* Theses are MPEG2-AAC */
1169             case( 0x66): /* main profile */
1170             case( 0x67): /* Low complexity profile */
1171             case( 0x68): /* Scaleable Sampling rate profile */
1172                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1173                 break;
1174             /* true MPEG 2 audio */
1175             case( 0x69):
1176                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1177                 break;
1178             case( 0x6a): /* MPEG1 video */
1179                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1180                 break;
1181             case( 0x6b): /* MPEG1 audio */
1182                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1183                 break;
1184             case( 0x6c ): /* jpeg */
1185                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1186                 break;
1187
1188             /* Private ID */
1189             case( 0xe0 ): /* NeroDigital: dvd subs */
1190                 if( p_track->fmt.i_cat == SPU_ES )
1191                 {
1192                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1193                     break;
1194                 }
1195             /* Fallback */
1196             default:
1197                 /* Unknown entry, but don't touch i_fourcc */
1198                 msg_Warn( p_demux,
1199                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1200                           p_decconfig->i_objectTypeIndication,
1201                           p_track->i_track_ID );
1202                 break;
1203         }
1204         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1205         if( p_track->fmt.i_extra > 0 )
1206         {
1207             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1208             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1209                     p_track->fmt.i_extra );
1210         }
1211     }
1212     else
1213     {
1214         switch( p_sample->i_type )
1215         {
1216             /* qt decoder, send the complete chunk */
1217             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1218             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1219             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1220             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1221             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1222                 p_track->fmt.i_extra =
1223                     p_sample->data.p_sample_vide->i_qt_image_description;
1224                 if( p_track->fmt.i_extra > 0 )
1225                 {
1226                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1227                     memcpy( p_track->fmt.p_extra,
1228                             p_sample->data.p_sample_vide->p_qt_image_description,
1229                             p_track->fmt.i_extra);
1230                 }
1231                 break;
1232             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1233             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1234             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1235             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1236                 p_track->fmt.i_extra =
1237                     p_sample->data.p_sample_soun->i_qt_description;
1238                 if( p_track->fmt.i_extra > 0 )
1239                 {
1240                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1241                     memcpy( p_track->fmt.p_extra,
1242                             p_sample->data.p_sample_soun->p_qt_description,
1243                             p_track->fmt.i_extra);
1244                 }
1245                 break;
1246
1247             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1248             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1249             {
1250                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1251
1252                 if( p_avcC )
1253                 {
1254                     /* Hack: use a packetizer to reecampsulate data in anexe B format */
1255                     msg_Dbg( p_demux, "avcC: size=%d", p_avcC->data.p_avcC->i_avcC );
1256                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1257                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1258                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC, p_track->fmt.i_extra );
1259                     p_track->fmt.b_packetized = VLC_FALSE;
1260                 }
1261                 else
1262                 {
1263                     msg_Err( p_demux, "missing avcC" );
1264                 }
1265                 break;
1266             }
1267
1268             default:
1269                 break;
1270         }
1271     }
1272
1273 #undef p_decconfig
1274
1275     /* some last initialisation */
1276     switch( p_track->fmt.i_cat )
1277     {
1278     case( VIDEO_ES ):
1279         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1280         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1281
1282         /* fall on display size */
1283         if( p_track->fmt.video.i_width <= 0 )
1284             p_track->fmt.video.i_width = p_track->i_width;
1285         if( p_track->fmt.video.i_height <= 0 )
1286             p_track->fmt.video.i_height = p_track->i_height;
1287
1288         /* Find out apect ratio from display size */
1289         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1290             /* Work-around buggy muxed files */
1291             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1292             p_track->fmt.video.i_aspect =
1293                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1294
1295         break;
1296
1297     case( AUDIO_ES ):
1298         p_track->fmt.audio.i_channels =
1299             p_sample->data.p_sample_soun->i_channelcount;
1300         p_track->fmt.audio.i_rate =
1301             p_sample->data.p_sample_soun->i_sampleratehi;
1302         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1303             p_sample->data.p_sample_soun->i_sampleratehi *
1304                 p_sample->data.p_sample_soun->i_samplesize;
1305         p_track->fmt.audio.i_bitspersample =
1306             p_sample->data.p_sample_soun->i_samplesize;
1307         break;
1308
1309     default:
1310         break;
1311     }
1312
1313     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1314
1315     return VLC_SUCCESS;
1316 }
1317
1318 /* given a time it return sample/chunk
1319  * it also update elst field of the track
1320  */
1321 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1322                                    int64_t i_start, uint32_t *pi_chunk,
1323                                    uint32_t *pi_sample )
1324 {
1325     demux_sys_t *p_sys = p_demux->p_sys;
1326     MP4_Box_t   *p_stss;
1327     uint64_t     i_dts;
1328     unsigned int i_sample;
1329     unsigned int i_chunk;
1330     int          i_index;
1331
1332     /* FIXME see if it's needed to check p_track->i_chunk_count */
1333     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1334     {
1335         return( VLC_EGENERIC );
1336     }
1337
1338     /* handle elst (find the correct one) */
1339     MP4_TrackSetELST( p_demux, p_track, i_start );
1340     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1341     {
1342         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1343         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1344
1345         /* now calculate i_start for this elst */
1346         /* offset */
1347         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1348         if( i_start < 0 )
1349         {
1350             *pi_chunk = 0;
1351             *pi_sample= 0;
1352
1353             return VLC_SUCCESS;
1354         }
1355         /* to track time scale */
1356         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1357         /* add elst offset */
1358         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1359              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1360             elst->i_media_time[p_track->i_elst] > 0 )
1361         {
1362             i_start += elst->i_media_time[p_track->i_elst];
1363         }
1364
1365         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1366                  "ms (track)", p_track->i_elst,
1367                  i_mvt * 1000 / p_sys->i_timescale,
1368                  i_start * 1000 / p_track->i_timescale );
1369     }
1370     else
1371     {
1372         /* convert absolute time to in timescale unit */
1373         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1374     }
1375
1376     /* we start from sample 0/chunk 0, hope it won't take too much time */
1377     /* *** find good chunk *** */
1378     for( i_chunk = 0; ; i_chunk++ )
1379     {
1380         if( i_chunk + 1 >= p_track->i_chunk_count )
1381         {
1382             /* at the end and can't check if i_start in this chunk,
1383                it will be check while searching i_sample */
1384             i_chunk = p_track->i_chunk_count - 1;
1385             break;
1386         }
1387
1388         if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1389             i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1390         {
1391             break;
1392         }
1393     }
1394
1395     /* *** find sample in the chunk *** */
1396     i_sample = p_track->chunk[i_chunk].i_sample_first;
1397     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1398     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1399     {
1400         if( i_dts +
1401             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1402             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1403         {
1404             i_dts    +=
1405                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1406                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1407
1408             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1409             i_index++;
1410         }
1411         else
1412         {
1413             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1414             {
1415                 break;
1416             }
1417             i_sample += ( i_start - i_dts ) /
1418                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1419             break;
1420         }
1421     }
1422
1423     if( i_sample >= p_track->i_sample_count )
1424     {
1425         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1426                   "(seeking too far) chunk=%d sample=%d",
1427                   p_track->i_track_ID, i_chunk, i_sample );
1428         return( VLC_EGENERIC );
1429     }
1430
1431
1432     /* *** Try to find nearest sync points *** */
1433     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1434     {
1435         unsigned int i_index;
1436         msg_Dbg( p_demux,
1437                     "track[Id 0x%x] using Sync Sample Box (stss)",
1438                     p_track->i_track_ID );
1439         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1440         {
1441             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1442             {
1443                 if( i_index > 0 )
1444                 {
1445                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1446                             i_sample,
1447                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1448                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1449                     /* new i_sample is less than old so i_chunk can only decreased */
1450                     while( i_chunk > 0 &&
1451                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1452                     {
1453                         i_chunk--;
1454                     }
1455                 }
1456                 else
1457                 {
1458                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1459                             i_sample,
1460                             p_stss->data.p_stss->i_sample_number[i_index] );
1461                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1462                     /* new i_sample is more than old so i_chunk can only increased */
1463                     while( i_chunk < p_track->i_chunk_count - 1 &&
1464                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1465                              p_track->chunk[i_chunk].i_sample_count )
1466                     {
1467                         i_chunk++;
1468                     }
1469                 }
1470                 break;
1471             }
1472         }
1473     }
1474     else
1475     {
1476         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1477                  "Sample Box (stss)", p_track->i_track_ID );
1478     }
1479
1480     *pi_chunk  = i_chunk;
1481     *pi_sample = i_sample;
1482
1483     return VLC_SUCCESS;
1484 }
1485
1486 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1487                                  unsigned int i_chunk, unsigned int i_sample )
1488 {
1489     vlc_bool_t b_reselect = VLC_FALSE;
1490
1491     /* now see if actual es is ok */
1492     if( p_track->i_chunk < 0 ||
1493         p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1494         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1495             p_track->chunk[i_chunk].i_sample_description_index )
1496     {
1497         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1498                   p_track->i_track_ID );
1499
1500         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1501                         p_track->p_es, &b_reselect );
1502
1503         es_out_Del( p_demux->out, p_track->p_es );
1504
1505         p_track->p_es = NULL;
1506
1507         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1508         {
1509             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1510                      p_track->i_track_ID );
1511
1512             p_track->b_ok       = VLC_FALSE;
1513             p_track->b_selected = VLC_FALSE;
1514             return VLC_EGENERIC;
1515         }
1516     }
1517
1518     /* select again the new decoder */
1519     if( b_reselect )
1520     {
1521         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1522     }
1523
1524     p_track->i_chunk    = i_chunk;
1525     p_track->i_sample   = i_sample;
1526
1527     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1528 }
1529
1530 /****************************************************************************
1531  * MP4_TrackCreate:
1532  ****************************************************************************
1533  * Parse track information and create all needed data to run a track
1534  * If it succeed b_ok is set to 1 else to 0
1535  ****************************************************************************/
1536 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1537                              MP4_Box_t *p_box_trak )
1538 {
1539     demux_sys_t *p_sys = p_demux->p_sys;
1540
1541     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1542     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1543     MP4_Box_t *p_elst;
1544
1545     MP4_Box_t *p_mdhd;
1546     MP4_Box_t *p_hdlr;
1547
1548     MP4_Box_t *p_vmhd;
1549     MP4_Box_t *p_smhd;
1550
1551     MP4_Box_t *p_drms;
1552
1553     unsigned int i;
1554     char language[4];
1555
1556     /* hint track unsuported */
1557
1558     /* set default value (-> track unusable) */
1559     p_track->b_ok       = VLC_FALSE;
1560     p_track->b_enable   = VLC_FALSE;
1561     p_track->b_selected = VLC_FALSE;
1562
1563     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1564
1565     if( !p_tkhd )
1566     {
1567         return;
1568     }
1569
1570     /* do we launch this track by default ? */
1571     p_track->b_enable =
1572         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1573
1574     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1575     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1576     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1577
1578     if( p_tref )
1579     {
1580 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1581     }
1582
1583     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1584     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1585
1586     if( ( !p_mdhd )||( !p_hdlr ) )
1587     {
1588         return;
1589     }
1590
1591     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1592
1593     for( i = 0; i < 3; i++ )
1594     {
1595         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1596     }
1597     language[3] = '\0';
1598
1599     switch( p_hdlr->data.p_hdlr->i_handler_type )
1600     {
1601         case( FOURCC_soun ):
1602             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1603             {
1604                 return;
1605             }
1606             p_track->fmt.i_cat = AUDIO_ES;
1607             break;
1608
1609         case( FOURCC_vide ):
1610             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1611             {
1612                 return;
1613             }
1614             p_track->fmt.i_cat = VIDEO_ES;
1615             break;
1616
1617         case( FOURCC_text ):
1618         case( FOURCC_subp ):
1619             p_track->fmt.i_cat = SPU_ES;
1620             break;
1621
1622         default:
1623             return;
1624     }
1625
1626     p_track->i_elst = 0;
1627     p_track->i_elst_time = 0;
1628     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1629     {
1630         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1631         int i;
1632
1633         msg_Warn( p_demux, "elst box found" );
1634         for( i = 0; i < elst->i_entry_count; i++ )
1635         {
1636             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd"ms) rate=%d.%d",
1637                      i,
1638                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1639                      elst->i_media_time[i] >= 0 ?
1640                         elst->i_media_time[i] * 1000 / p_track->i_timescale : -1,
1641                      elst->i_media_rate_integer[i],
1642                      elst->i_media_rate_fraction[i] );
1643         }
1644     }
1645
1646
1647 /*  TODO
1648     add support for:
1649     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1650 */
1651     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1652         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1653     {
1654         return;
1655     }
1656
1657     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1658     p_track->b_drms = p_drms != NULL;
1659     p_track->p_drms = p_track->b_drms ?
1660         p_drms->data.p_sample_soun->p_drms : NULL;
1661
1662     /* Set language */
1663     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1664     {
1665         p_track->fmt.psz_language = strdup( language );
1666     }
1667
1668     /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1669     if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1670     {
1671         MP4_Box_t *p_sample;
1672
1673         p_sample = MP4_BoxGet(  p_track->p_stsd, "[0]" );
1674         if( p_sample && p_sample->data.p_sample_soun)
1675         {
1676             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1677             if( p_soun->i_qt_version == 0 &&
1678                 p_track->i_timescale != p_soun->i_sampleratehi )
1679             {
1680                 msg_Warn( p_demux,
1681                           "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1682                           "qt_version == 0\n"
1683                           "Making both equal. (report any problem)",
1684                           p_track->i_timescale, p_soun->i_sampleratehi );
1685
1686                 if( p_soun->i_sampleratehi )
1687                     p_track->i_timescale = p_soun->i_sampleratehi;
1688                 else
1689                     p_soun->i_sampleratehi = p_track->i_timescale;
1690             }
1691         }
1692     }
1693
1694     /* Create chunk index table and sample index table */
1695     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1696         TrackCreateSamplesIndex( p_demux, p_track ) )
1697     {
1698         return; /* cannot create chunks index */
1699     }
1700
1701     p_track->i_chunk  = 0;
1702     p_track->i_sample = 0;
1703
1704     /* now create es */
1705     if( TrackCreateES( p_demux,
1706                        p_track, p_track->i_chunk,
1707                        &p_track->p_es ) )
1708     {
1709         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1710                  p_track->i_track_ID );
1711         return;
1712     }
1713
1714 #if 0
1715     {
1716         int i;
1717         for( i = 0; i < p_track->i_chunk_count; i++ )
1718         {
1719             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1720                      i, p_track->chunk[i].i_sample_count,
1721                      p_track->chunk[i].i_first_dts );
1722
1723         }
1724     }
1725 #endif
1726     p_track->b_ok = VLC_TRUE;
1727 }
1728
1729 /****************************************************************************
1730  * MP4_TrackDestroy:
1731  ****************************************************************************
1732  * Destroy a track created by MP4_TrackCreate.
1733  ****************************************************************************/
1734 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1735 {
1736     unsigned int i_chunk;
1737
1738     p_track->b_ok = VLC_FALSE;
1739     p_track->b_enable   = VLC_FALSE;
1740     p_track->b_selected = VLC_FALSE;
1741
1742     es_format_Clean( &p_track->fmt );
1743
1744     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1745     {
1746         if( p_track->chunk )
1747         {
1748            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1749            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1750         }
1751     }
1752     FREE( p_track->chunk );
1753
1754     if( !p_track->i_sample_size )
1755     {
1756         FREE( p_track->p_sample_size );
1757     }
1758 }
1759
1760 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1761                             mtime_t i_start )
1762 {
1763     if( !p_track->b_ok )
1764     {
1765         return VLC_EGENERIC;
1766     }
1767
1768     if( p_track->b_selected )
1769     {
1770         msg_Warn( p_demux, "track[Id 0x%x] already selected",
1771                   p_track->i_track_ID );
1772         return VLC_SUCCESS;
1773     }
1774
1775     return MP4_TrackSeek( p_demux, p_track, i_start );
1776 }
1777
1778 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1779 {
1780     if( !p_track->b_ok )
1781     {
1782         return;
1783     }
1784
1785     if( !p_track->b_selected )
1786     {
1787         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1788                   p_track->i_track_ID );
1789         return;
1790     }
1791     if( p_track->p_es )
1792     {
1793         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1794                         p_track->p_es, VLC_FALSE );
1795     }
1796
1797     p_track->b_selected = VLC_FALSE;
1798 }
1799
1800 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1801                           mtime_t i_start )
1802 {
1803     uint32_t i_chunk;
1804     uint32_t i_sample;
1805
1806     if( !p_track->b_ok )
1807     {
1808         return( VLC_EGENERIC );
1809     }
1810
1811     p_track->b_selected = VLC_FALSE;
1812
1813     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1814                                 &i_chunk, &i_sample ) )
1815     {
1816         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1817                   p_track->i_track_ID );
1818         return( VLC_EGENERIC );
1819     }
1820
1821     p_track->b_selected = VLC_TRUE;
1822
1823     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
1824         VLC_SUCCESS )
1825     {
1826         p_track->b_selected = VLC_TRUE;
1827     }
1828     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1829 }
1830
1831
1832 /*
1833  * 3 types: for audio
1834  *
1835  */
1836 #define QT_V0_MAX_SAMPLES    1500
1837 static int MP4_TrackSampleSize( mp4_track_t *p_track )
1838 {
1839     int i_size;
1840     MP4_Box_data_sample_soun_t *p_soun;
1841
1842     if( p_track->i_sample_size == 0 )
1843     {
1844         /* most simple case */
1845         return( p_track->p_sample_size[p_track->i_sample] );
1846     }
1847     if( p_track->fmt.i_cat != AUDIO_ES )
1848     {
1849         return( p_track->i_sample_size );
1850     }
1851
1852     if( p_track->i_sample_size != 1 )
1853     {
1854         //msg_Warn( p_demux, "SampleSize != 1" );
1855         return( p_track->i_sample_size );
1856     }
1857
1858     p_soun = p_track->p_sample->data.p_sample_soun;
1859
1860     if( p_soun->i_qt_version == 1 )
1861     {
1862         i_size = p_track->chunk[p_track->i_chunk].i_sample_count / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
1863     }
1864     else
1865     {
1866         /* FIXME */
1867         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
1868                 ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first );
1869         if( i_samples > QT_V0_MAX_SAMPLES )
1870         {
1871             i_samples = QT_V0_MAX_SAMPLES;
1872         }
1873         i_size = i_samples * p_soun->i_channelcount * p_soun->i_samplesize / 8;
1874     }
1875
1876     //fprintf( stderr, "size=%d\n", i_size );
1877     return( i_size );
1878 }
1879
1880
1881 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
1882 {
1883     unsigned int i_sample;
1884     uint64_t i_pos;
1885
1886
1887     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
1888
1889     if( p_track->i_sample_size )
1890     {
1891         MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
1892
1893         if( p_soun->i_qt_version == 0 )
1894         {
1895             i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) *
1896                         p_soun->i_channelcount * p_soun->i_samplesize / 8;
1897         }
1898         else
1899         {
1900             /* we read chunk by chunk */
1901             i_pos += 0;
1902         }
1903     }
1904     else
1905     {
1906         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
1907                 i_sample < p_track->i_sample; i_sample++ )
1908         {
1909             i_pos += p_track->p_sample_size[i_sample];
1910         }
1911
1912     }
1913     return( i_pos );
1914 }
1915
1916 static int  MP4_TrackNextSample( demux_t     *p_demux,
1917                                  mp4_track_t   *p_track )
1918 {
1919
1920     if( p_track->fmt.i_cat == AUDIO_ES &&
1921         p_track->i_sample_size != 0 )
1922     {
1923         MP4_Box_data_sample_soun_t *p_soun;
1924
1925         p_soun = p_track->p_sample->data.p_sample_soun;
1926
1927         if( p_soun->i_qt_version == 1 )
1928         {
1929             /* chunk by chunk */
1930             p_track->i_sample =
1931                 p_track->chunk[p_track->i_chunk].i_sample_first +
1932                 p_track->chunk[p_track->i_chunk].i_sample_count;
1933         }
1934         else
1935         {
1936             /* FIXME */
1937             p_track->i_sample += QT_V0_MAX_SAMPLES;
1938             if( p_track->i_sample > p_track->chunk[p_track->i_chunk].i_sample_first + p_track->chunk[p_track->i_chunk].i_sample_count )
1939             {
1940                 p_track->i_sample =
1941                     p_track->chunk[p_track->i_chunk].i_sample_first +
1942                     p_track->chunk[p_track->i_chunk].i_sample_count;
1943             }
1944         }
1945     }
1946     else
1947     {
1948         p_track->i_sample++;
1949     }
1950
1951     if( p_track->i_sample >= p_track->i_sample_count )
1952     {
1953         /* we have reach end of the track so free decoder stuff */
1954         msg_Warn( p_demux, "track[0x%x] will be disabled", p_track->i_track_ID );
1955         MP4_TrackUnselect( p_demux, p_track );
1956         return VLC_EGENERIC;
1957     }
1958
1959     /* Have we changed chunk ? */
1960     if( p_track->i_sample >=
1961             p_track->chunk[p_track->i_chunk].i_sample_first +
1962             p_track->chunk[p_track->i_chunk].i_sample_count )
1963     {
1964         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
1965                                   p_track->i_sample ) )
1966         {
1967             msg_Warn( p_demux, "track[0x%x] will be disabled "
1968                       "(cannot restart decoder)", p_track->i_track_ID );
1969             MP4_TrackUnselect( p_demux, p_track );
1970             return VLC_EGENERIC;
1971         }
1972     }
1973
1974     /* Have we changed elst */
1975     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1976     {
1977         demux_sys_t *p_sys = p_demux->p_sys;
1978         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1979         int64_t i_mvt = MP4_TrackGetPTS( p_demux, p_track ) *
1980                         p_sys->i_timescale / (int64_t)1000000;
1981
1982         if( p_track->i_elst < elst->i_entry_count &&
1983             i_mvt >= p_track->i_elst_time +
1984                      elst->i_segment_duration[p_track->i_elst] )
1985         {
1986             MP4_TrackSetELST( p_demux, p_track,
1987                               MP4_TrackGetPTS( p_demux, p_track ) );
1988         }
1989     }
1990
1991     return VLC_SUCCESS;
1992 }
1993
1994 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
1995                               int64_t i_time )
1996 {
1997     demux_sys_t *p_sys = p_demux->p_sys;
1998     int         i_elst_last = tk->i_elst;
1999
2000     /* handle elst (find the correct one) */
2001     tk->i_elst      = 0;
2002     tk->i_elst_time = 0;
2003     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2004     {
2005         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2006         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2007
2008         for( tk->i_elst = 0; tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2009         {
2010             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2011
2012             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2013             {
2014                 break;
2015             }
2016             tk->i_elst_time += i_dur;
2017         }
2018
2019         if( tk->i_elst >= elst->i_entry_count )
2020         {
2021             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2022             tk->i_elst = elst->i_entry_count - 1;
2023             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2024         }
2025
2026         if( elst->i_media_time[tk->i_elst] < 0 )
2027         {
2028             /* track offset */
2029             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2030         }
2031     }
2032     if( i_elst_last != tk->i_elst )
2033     {
2034         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2035     }
2036 }