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 #ifdef UNDER_CE
  38 #define uint64_t int64_t
  39 #endif
  40
  41 /*****************************************************************************
  42  * Module descriptor
  43  *****************************************************************************/
  44 static int  Open ( vlc_object_t * );
  45 static void Close( vlc_object_t * );
  46
  47 vlc_module_begin();
  48     set_description( _("MP4 stream demuxer") );
  49     set_capability( "demux2", 242 );
  50     set_callbacks( Open, Close );
  51 vlc_module_end();
  52
  53 /*****************************************************************************
  54  * Local prototypes
  55  *****************************************************************************/
  56 static int    Demux   ( demux_t * );
  57 static int    DemuxRef( demux_t *p_demux )
  58 {
  59     return 0;
  60 }
  61 static int   Seek     ( demux_t *, mtime_t );
  62 static int   Control  ( demux_t *, int, va_list );
  63
  64 /* Contain all information about a chunk */
  65 typedef struct
  66 {
  67     uint64_t     i_offset; /* absolute position of this chunk in the file */
  68     uint32_t     i_sample_description_index; /* index for SampleEntry to use */
  69     uint32_t     i_sample_count; /* how many samples in this chunk */
  70     uint32_t     i_sample_first; /* index of the first sample in this chunk */
  71
  72     /* now provide way to calculate pts, dts, and offset without to
  73         much memory and with fast acces */
  74
  75     /* with this we can calculate dts/pts without waste memory */
  76     uint64_t     i_first_dts;
  77     uint32_t     *p_sample_count_dts;
  78     uint32_t     *p_sample_delta_dts; /* dts delta */
  79
  80     /* TODO if needed add pts
  81         but quickly *add* support for edts and seeking */
  82
  83 } mp4_chunk_t;
  84
  85
  86  /* Contain all needed information for read all track with vlc */
  87 typedef struct
  88 {
  89     int i_track_ID;     /* this should be unique */
  90
  91     int b_ok;           /* The track is usable */
  92     int b_enable;       /* is the trak enable by default */
  93     vlc_bool_t b_selected;     /* is the trak being played */
  94
  95     es_format_t fmt;
  96     es_out_id_t *p_es;
  97
  98     /* display size only ! */
  99     int i_width;
 100     int i_height;
 101
 102     /* more internal data */
 103     uint64_t        i_timescale;    /* time scale for this track only */
 104
 105     /* elst */
 106     int             i_elst;         /* current elst */
 107     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 108     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 109
 110     /* give the next sample to read, i_chunk is to find quickly where
 111       the sample is located */
 112     uint32_t         i_sample;       /* next sample to read */
 113     uint32_t         i_chunk;        /* chunk where next sample is stored */
 114     /* total count of chunk and sample */
 115     uint32_t         i_chunk_count;
 116     uint32_t         i_sample_count;
 117
 118     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 119
 120     /* sample size, p_sample_size defined only if i_sample_size == 0
 121         else i_sample_size is size for all sample */
 122     uint32_t         i_sample_size;
 123     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 124                                     too much time to do sumations each time*/
 125
 126     MP4_Box_t *p_stbl;  /* will contain all timing information */
 127     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 128     MP4_Box_t *p_sample;/* point on actual sdsd */
 129
 130     vlc_bool_t b_drms;
 131     void      *p_drms;
 132
 133 } mp4_track_t;
 134
 135
 136 struct demux_sys_t
 137 {
 138     MP4_Box_t    *p_root;      /* container for the whole file */
 139
 140     mtime_t      i_pcr;
 141
 142     uint64_t     i_time;        /* time position of the presentation
 143                                  * in movie timescale */
 144     uint64_t     i_timescale;   /* movie time scale */
 145     uint64_t     i_duration;    /* movie duration */
 146     unsigned int i_tracks;      /* number of tracks */
 147     mp4_track_t *track;    /* array of track */
 148 };
 149
 150
 151 /*****************************************************************************
 152  * Declaration of local function
 153  *****************************************************************************/
 154 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 155 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 156
 157 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 158 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 159
 160 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 161
 162 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 163 static int      MP4_TrackSampleSize( mp4_track_t * );
 164 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 165 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 166
 167 /* Return time in µs of a track */
 168 static inline int64_t MP4_TrackGetPTS( demux_t *p_demux, mp4_track_t *p_track )
 169 {
 170     unsigned int i_sample;
 171     unsigned int i_index;
 172     int64_t i_dts;
 173
 174     i_sample = p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first;
 175     i_dts = p_track->chunk[p_track->i_chunk].i_first_dts;
 176     i_index = 0;
 177     while( i_sample > 0 )
 178     {
 179         if( i_sample > p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index] )
 180         {
 181             i_dts += p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index] *
 182                         p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
 183             i_sample -= p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index];
 184             i_index++;
 185         }
 186         else
 187         {
 188             i_dts += i_sample *
 189                         p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
 190             i_sample = 0;
 191             break;
 192         }
 193     }
 194
 195     /* now handle elst */
 196     if( p_track->p_elst )
 197     {
 198         demux_sys_t         *p_sys = p_demux->p_sys;
 199         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 200
 201         /* convert to offset */
 202         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 203               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 204             elst->i_media_time[p_track->i_elst] > 0 )
 205         {
 206             i_dts -= elst->i_media_time[p_track->i_elst];
 207         }
 208
 209         /* add i_elst_time */
 210         i_dts += p_track->i_elst_time * p_track->i_timescale / p_sys->i_timescale;
 211
 212         if( i_dts < 0 ) i_dts = 0;
 213     }
 214
 215     return (int64_t)1000000 * i_dts / p_track->i_timescale;
 216 }
 217 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 218 {
 219     return (int64_t)1000000 * p_sys->i_time / p_sys->i_timescale;
 220 }
 221
 222 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
 223
 224 /*****************************************************************************
 225  * Open: check file and initializes MP4 structures
 226  *****************************************************************************/
 227 static int Open( vlc_object_t * p_this )
 228 {
 229     demux_t  *p_demux = (demux_t *)p_this;
 230     demux_sys_t     *p_sys;
 231
 232     uint8_t         *p_peek;
 233
 234     MP4_Box_t       *p_ftyp;
 235     MP4_Box_t       *p_rmra;
 236     MP4_Box_t       *p_mvhd;
 237     MP4_Box_t       *p_trak;
 238
 239     unsigned int    i;
 240     vlc_bool_t      b_seekable;
 241
 242     /* a little test to see if it could be a mp4 */
 243     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
 244     {
 245         msg_Warn( p_demux, "MP4 plugin discarded (cannot peek)" );
 246         return VLC_EGENERIC;
 247     }
 248     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 249     {
 250         case FOURCC_ftyp:
 251         case FOURCC_moov:
 252         case FOURCC_foov:
 253         case FOURCC_moof:
 254         case FOURCC_mdat:
 255         case FOURCC_udta:
 256         case FOURCC_free:
 257         case FOURCC_skip:
 258         case FOURCC_wide:
 259         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 260             break;
 261          default:
 262             msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 263             return VLC_EGENERIC;
 264     }
 265
 266     /* I need to seek */
 267     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 268     if( !b_seekable )
 269     {
 270         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 271         return VLC_EGENERIC;
 272     }
 273
 274     /*Set exported functions */
 275     p_demux->pf_demux = Demux;
 276     p_demux->pf_control = Control;
 277
 278     /* create our structure that will contains all data */
 279     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 280     memset( p_sys, 0, sizeof( demux_sys_t ) );
 281
 282     /* Now load all boxes ( except raw data ) */
 283     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 284     {
 285         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 286         goto error;
 287     }
 288
 289     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 290
 291     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 292     {
 293         switch( p_ftyp->data.p_ftyp->i_major_brand )
 294         {
 295             case( FOURCC_isom ):
 296                 msg_Dbg( p_demux,
 297                          "ISO Media file (isom) version %d.",
 298                          p_ftyp->data.p_ftyp->i_minor_version );
 299                 break;
 300             default:
 301                 msg_Dbg( p_demux,
 302                          "unrecognized major file specification (%4.4s).",
 303                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 304                 break;
 305         }
 306     }
 307     else
 308     {
 309         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 310     }
 311
 312     /* the file need to have one moov box */
 313     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 314     {
 315         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 316
 317         if( !p_foov )
 318         {
 319             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 320             goto error;
 321         }
 322         /* we have a free box as a moov, rename it */
 323         p_foov->i_type = FOURCC_moov;
 324     }
 325
 326     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 327     {
 328         playlist_t *p_playlist;
 329         playlist_item_t *p_item;
 330         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 331         int        i;
 332         vlc_bool_t b_play = VLC_FALSE;
 333
 334         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 335
 336         p_playlist =
 337             (playlist_t *)vlc_object_find( p_demux,
 338                                            VLC_OBJECT_PLAYLIST,
 339                                            FIND_ANYWHERE );
 340         if( p_playlist )
 341         {
 342             p_item = playlist_ItemGetByInput( p_playlist,
 343                       ((input_thread_t *)p_demux->p_parent)->input.p_item );
 344             playlist_ItemToNode( p_playlist, p_item );
 345
 346             for( i = 0; i < i_count; i++ )
 347             {
 348                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 349                 char      *psz_ref;
 350                 uint32_t  i_ref_type;
 351
 352                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 353                 {
 354                     continue;
 355                 }
 356                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 357
 358                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 359                          psz_ref, (char*)&i_ref_type );
 360
 361                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 362                 {
 363                     if( strstr( psz_ref, "qt5gateQT" ) )
 364                     {
 365                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 366                         continue;
 367                     }
 368                     if( !strncmp( psz_ref, "http://", 7 ) ||
 369                         !strncmp( psz_ref, "rtsp://", 7 ) )
 370                     {
 371                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 372                         if( p_item )
 373                         {
 374                             playlist_item_t *p_child =
 375                                         playlist_ItemNew( p_playlist,
 376                                                           psz_ref, psz_ref );
 377                             if( p_child )
 378                             {
 379                                 playlist_NodeAddItem( p_playlist, p_child,
 380                                                  p_item->pp_parents[0]->i_view,
 381                                                  p_item, PLAYLIST_APPEND,
 382                                                  PLAYLIST_END );
 383                                 playlist_CopyParents( p_item, p_child );
 384                                 b_play = VLC_TRUE;
 385                             }
 386                         }
 387                     }
 388                     else
 389                     {
 390                         /* msg dbg relative ? */
 391                         char *psz_absolute = alloca( strlen( p_demux->psz_access ) + 3 + strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1);
 392                         char *end = strrchr( p_demux->psz_path, '/' );
 393
 394                         if( end )
 395                         {
 396                             int i_len = end + 1 - p_demux->psz_path;
 397
 398                             strcpy( psz_absolute, p_demux->psz_access );
 399                             strcat( psz_absolute, "://" );
 400                             strncat( psz_absolute, p_demux->psz_path, i_len);
 401                         }
 402                         else
 403                         {
 404                             strcpy( psz_absolute, "" );
 405                         }
 406                         strcat( psz_absolute, psz_ref );
 407                         msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
 408                         if( p_item )
 409                         {
 410                             playlist_item_t *p_child =
 411                                         playlist_ItemNew( p_playlist,
 412                                                           psz_absolute,
 413                                                           psz_absolute );
 414                             if( p_child )
 415                             {
 416                                 playlist_NodeAddItem( p_playlist, p_child,
 417                                                  p_item->pp_parents[0]->i_view,
 418                                                  p_item, PLAYLIST_APPEND,
 419                                                  PLAYLIST_END );
 420                                 playlist_CopyParents( p_item, p_child );
 421                                 b_play = VLC_TRUE;
 422                             }
 423                         }
 424                     }
 425                 }
 426                 else
 427                 {
 428                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 429                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 430                 }
 431             }
 432             if( b_play == VLC_TRUE )
 433             {
 434                  playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 435                                    p_playlist->status.i_view,
 436                                    p_playlist->status.p_item, NULL );
 437             }
 438             vlc_object_release( p_playlist );
 439         }
 440         else
 441         {
 442             msg_Err( p_demux, "can't find playlist" );
 443         }
 444     }
 445
 446     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 447     {
 448         if( !p_rmra )
 449         {
 450             msg_Err( p_demux, "cannot find /moov/mvhd" );
 451             goto error;
 452         }
 453         else
 454         {
 455             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 456             p_demux->pf_demux = DemuxRef;
 457             return VLC_SUCCESS;
 458         }
 459     }
 460     else
 461     {
 462         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 463         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 464     }
 465
 466     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 467     {
 468         msg_Err( p_demux, "cannot find any /moov/trak" );
 469         goto error;
 470     }
 471     msg_Dbg( p_demux, "find %d track%c",
 472                         p_sys->i_tracks,
 473                         p_sys->i_tracks ? 's':' ' );
 474
 475     /* allocate memory */
 476     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 477     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 478
 479     /* now process each track and extract all usefull information */
 480     for( i = 0; i < p_sys->i_tracks; i++ )
 481     {
 482         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 483         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 484
 485         if( p_sys->track[i].b_ok )
 486         {
 487             char *psz_cat;
 488             switch( p_sys->track[i].fmt.i_cat )
 489             {
 490                 case( VIDEO_ES ):
 491                     psz_cat = "video";
 492                     break;
 493                 case( AUDIO_ES ):
 494                     psz_cat = "audio";
 495                     break;
 496                 case( SPU_ES ):
 497                     psz_cat = "subtitle";
 498                     break;
 499
 500                 default:
 501                     psz_cat = "unknown";
 502                     break;
 503             }
 504
 505             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 506                             p_sys->track[i].i_track_ID,
 507                             psz_cat,
 508                             p_sys->track[i].b_enable ? "enable":"disable",
 509                             p_sys->track[i].fmt.psz_language ? p_sys->track[i].fmt.psz_language : "undef" );
 510         }
 511         else
 512         {
 513             msg_Dbg( p_demux, "ignoring track[Id 0x%x]", p_sys->track[i].i_track_ID );
 514         }
 515
 516     }
 517     return VLC_SUCCESS;
 518
 519 error:
 520     if( p_sys->p_root )
 521     {
 522         MP4_BoxFree( p_demux->s, p_sys->p_root );
 523     }
 524     free( p_sys );
 525     return VLC_EGENERIC;
 526 }
 527
 528 /*****************************************************************************
 529  * Demux: read packet and send them to decoders
 530  *****************************************************************************
 531  * TODO check for newly selected track (ie audio upt to now )
 532  *****************************************************************************/
 533 static int Demux( demux_t *p_demux )
 534 {
 535     demux_sys_t *p_sys = p_demux->p_sys;
 536     unsigned int i_track;
 537
 538
 539     unsigned int i_track_selected;
 540
 541     /* check for newly selected/unselected track */
 542     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 543          i_track++ )
 544     {
 545         mp4_track_t *tk = &p_sys->track[i_track];
 546
 547         if( tk->b_selected && tk->i_sample >= tk->i_sample_count )
 548         {
 549             msg_Warn( p_demux, "track[0x%x] will be disabled", tk->i_track_ID );
 550             MP4_TrackUnselect( p_demux, tk);
 551         }
 552         else if( tk->b_ok )
 553         {
 554             vlc_bool_t b;
 555             es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 556
 557             if( tk->b_selected && !b )
 558             {
 559                 MP4_TrackUnselect( p_demux, tk );
 560             }
 561             else if( !tk->b_selected && b)
 562             {
 563                 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 564             }
 565
 566             if( tk->b_selected )
 567             {
 568                 i_track_selected++;
 569             }
 570         }
 571     }
 572
 573     if( i_track_selected <= 0 )
 574     {
 575         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 576         if( p_sys->i_timescale > 0 )
 577         {
 578             int64_t i_length = (mtime_t)1000000 *
 579                                (mtime_t)p_sys->i_duration /
 580                                (mtime_t)p_sys->i_timescale;
 581             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 582                 return 0;
 583             return 1;
 584         }
 585
 586         msg_Warn( p_demux, "no track selected, exiting..." );
 587         return 0;
 588     }
 589
 590     /* first wait for the good time to read a packet */
 591     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
 592
 593     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 594
 595     /* we will read 100ms for each stream so ...*/
 596     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 597
 598     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 599     {
 600         mp4_track_t *tk = &p_sys->track[i_track];
 601
 602         if( !tk->b_ok || !tk->b_selected )
 603         {
 604             continue;
 605         }
 606
 607         while( MP4_TrackGetPTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 608         {
 609 #if 0
 610             msg_Dbg( p_demux, "tk=%lld mv=%lld",
 611                      MP4_TrackGetPTS( p_demux, tk ),
 612                      MP4_GetMoviePTS( p_sys ) );
 613 #endif
 614
 615             if( MP4_TrackSampleSize( tk ) > 0 )
 616             {
 617                 block_t *p_block;
 618
 619                 /* go,go go ! */
 620                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 621                 {
 622                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
 623                     MP4_TrackUnselect( p_demux, tk );
 624                     break;
 625                 }
 626
 627                 /* now read pes */
 628                 if( ( p_block = stream_Block( p_demux->s,
 629                                               MP4_TrackSampleSize( tk ) ) ) == NULL )
 630                 {
 631                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
 632                     MP4_TrackUnselect( p_demux, tk );
 633                     break;
 634                 }
 635
 636                 if( tk->b_drms && tk->p_drms )
 637                 {
 638                     drms_decrypt( tk->p_drms,
 639                                   (uint32_t*)p_block->p_buffer,
 640                                   p_block->i_buffer );
 641                 }
 642                 else if( tk->fmt.i_cat == SPU_ES )
 643                 {
 644                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) && p_block->i_buffer >= 2 )
 645                     {
 646                         uint16_t i_size = GetWBE( p_block->p_buffer );
 647
 648                         if( i_size + 2 <= p_block->i_buffer )
 649                         {
 650                             char *p;
 651                             /* remove the length field, and append a '\0' */
 652                             memmove( &p_block->p_buffer[0], &p_block->p_buffer[2], i_size );
 653                             p_block->p_buffer[i_size] = '\0';
 654                             p_block->i_buffer = i_size + 1;
 655
 656                             /* convert \r -> \n */
 657                             while( ( p = strchr( p_block->p_buffer, '\r' ) ) )
 658                             {
 659                                 *p = '\n';
 660                             }
 661                         }
 662                         else
 663                         {
 664                             /* Invalid */
 665                             p_block->i_buffer = 0;
 666                         }
 667                     }
 668                 }
 669                 p_block->i_dts = MP4_TrackGetPTS( p_demux, tk ) + 1;
 670
 671                 p_block->i_pts = tk->fmt.i_cat == VIDEO_ES ? 0 : p_block->i_dts + 1;
 672
 673                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 674                 {
 675                     es_out_Send( p_demux->out, tk->p_es, p_block );
 676                 }
 677             }
 678
 679             /* Next sample */
 680             if( MP4_TrackNextSample( p_demux, tk ) )
 681             {
 682                 break;
 683             }
 684         }
 685     }
 686
 687     return 1;
 688 }
 689 /*****************************************************************************
 690  * Seek: Got to i_date
 691 ******************************************************************************/
 692 static int Seek( demux_t *p_demux, mtime_t i_date )
 693 {
 694     demux_sys_t *p_sys = p_demux->p_sys;
 695     unsigned int i_track;
 696
 697     /* First update update global time */
 698     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 699     p_sys->i_pcr  = i_date;
 700
 701     /* Now for each stream try to go to this time */
 702     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 703     {
 704         mp4_track_t *tk = &p_sys->track[i_track];
 705         MP4_TrackSeek( p_demux, tk, i_date );
 706     }
 707     return VLC_SUCCESS;
 708 }
 709
 710 /*****************************************************************************
 711  * Control:
 712  *****************************************************************************/
 713 static int Control( demux_t *p_demux, int i_query, va_list args )
 714 {
 715     demux_sys_t *p_sys = p_demux->p_sys;
 716
 717     double f, *pf;
 718     int64_t i64, *pi64;
 719
 720     switch( i_query )
 721     {
 722         case DEMUX_GET_POSITION:
 723             pf = (double*)va_arg( args, double * );
 724             if( p_sys->i_duration > 0 )
 725             {
 726                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 727             }
 728             else
 729             {
 730                 *pf = 0.0;
 731             }
 732             return VLC_SUCCESS;
 733
 734         case DEMUX_SET_POSITION:
 735             f = (double)va_arg( args, double );
 736             if( p_sys->i_timescale > 0 )
 737             {
 738                 i64 = (int64_t)( f * (double)1000000 *
 739                                  (double)p_sys->i_duration /
 740                                  (double)p_sys->i_timescale );
 741                 return Seek( p_demux, i64 );
 742             }
 743             else return VLC_SUCCESS;
 744
 745         case DEMUX_GET_TIME:
 746             pi64 = (int64_t*)va_arg( args, int64_t * );
 747             if( p_sys->i_timescale > 0 )
 748             {
 749                 *pi64 = (mtime_t)1000000 *
 750                         (mtime_t)p_sys->i_time /
 751                         (mtime_t)p_sys->i_timescale;
 752             }
 753             else *pi64 = 0;
 754             return VLC_SUCCESS;
 755
 756         case DEMUX_SET_TIME:
 757             i64 = (int64_t)va_arg( args, int64_t );
 758             return Seek( p_demux, i64 );
 759
 760         case DEMUX_GET_LENGTH:
 761             pi64 = (int64_t*)va_arg( args, int64_t * );
 762             if( p_sys->i_timescale > 0 )
 763             {
 764                 *pi64 = (mtime_t)1000000 *
 765                         (mtime_t)p_sys->i_duration /
 766                         (mtime_t)p_sys->i_timescale;
 767             }
 768             else *pi64 = 0;
 769             return VLC_SUCCESS;
 770
 771         case DEMUX_GET_FPS:
 772             msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
 773             return VLC_EGENERIC;
 774
 775         case DEMUX_GET_META:
 776         {
 777             vlc_meta_t **pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
 778             vlc_meta_t *meta;
 779             MP4_Box_t  *p_udta   = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 780             MP4_Box_t  *p_0xa9xxx;
 781             if( p_udta == NULL )
 782             {
 783                 return VLC_EGENERIC;
 784             }
 785             *pp_meta = meta = vlc_meta_New();
 786             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 787                  p_0xa9xxx = p_0xa9xxx->p_next )
 788             {
 789                 switch( p_0xa9xxx->i_type )
 790                 {
 791                 case FOURCC_0xa9nam: /* Full name */
 792                     vlc_meta_Add( meta, VLC_META_TITLE,
 793                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 794                     break;
 795                 case FOURCC_0xa9aut:
 796                     vlc_meta_Add( meta, VLC_META_AUTHOR,
 797                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 798                     break;
 799                 case FOURCC_0xa9ART:
 800                     vlc_meta_Add( meta, VLC_META_ARTIST,
 801                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 802                     break;
 803                 case FOURCC_0xa9cpy:
 804                     vlc_meta_Add( meta, VLC_META_COPYRIGHT,
 805                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 806                     break;
 807                 case FOURCC_0xa9day: /* Creation Date */
 808                     vlc_meta_Add( meta, VLC_META_DATE,
 809                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 810                     break;
 811                 case FOURCC_0xa9des: /* Description */
 812                     vlc_meta_Add( meta, VLC_META_DESCRIPTION,
 813                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 814                     break;
 815                 case FOURCC_0xa9gen: /* Genre */
 816                     vlc_meta_Add( meta, VLC_META_GENRE,
 817                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 818                     break;
 819
 820                 case FOURCC_0xa9swr:
 821                 case FOURCC_0xa9inf: /* Information */
 822                 case FOURCC_0xa9alb: /* Album */
 823                 case FOURCC_0xa9dir: /* Director */
 824                 case FOURCC_0xa9dis: /* Disclaimer */
 825                 case FOURCC_0xa9enc: /* Encoded By */
 826                 case FOURCC_0xa9trk: /* Track */
 827                 case FOURCC_0xa9cmt: /* Commment */
 828                 case FOURCC_0xa9url: /* URL */
 829                 case FOURCC_0xa9req: /* Requirements */
 830                 case FOURCC_0xa9fmt: /* Original Format */
 831                 case FOURCC_0xa9dsa: /* Display Source As */
 832                 case FOURCC_0xa9hst: /* Host Computer */
 833                 case FOURCC_0xa9prd: /* Producer */
 834                 case FOURCC_0xa9prf: /* Performers */
 835                 case FOURCC_0xa9ope: /* Original Performer */
 836                 case FOURCC_0xa9src: /* Providers Source Content */
 837                 case FOURCC_0xa9wrt: /* Writer */
 838                 case FOURCC_0xa9com: /* Composer */
 839                 case FOURCC_WLOC:    /* Window Location */
 840                     /* TODO one day, but they aren't really meaningfull */
 841                     break;
 842
 843                 default:
 844                     break;
 845                 }
 846             }
 847             return VLC_SUCCESS;
 848         }
 849
 850         case DEMUX_GET_TITLE_INFO:
 851         case DEMUX_SET_NEXT_DEMUX_TIME:
 852         case DEMUX_SET_GROUP:
 853             return VLC_EGENERIC;
 854
 855         default:
 856             msg_Warn( p_demux, "control query unimplemented !!!" );
 857             return VLC_EGENERIC;
 858     }
 859 }
 860
 861 /*****************************************************************************
 862  * Close: frees unused data
 863  *****************************************************************************/
 864 static void Close ( vlc_object_t * p_this )
 865 {
 866     unsigned int i_track;
 867     demux_t *  p_demux = (demux_t *)p_this;
 868     demux_sys_t *p_sys = p_demux->p_sys;
 869
 870     msg_Dbg( p_demux, "freeing all memory" );
 871
 872     MP4_BoxFree( p_demux->s, p_sys->p_root );
 873     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 874     {
 875         MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
 876     }
 877     FREE( p_sys->track );
 878
 879     free( p_sys );
 880 }
 881
 882
 883
 884 /****************************************************************************
 885  * Local functions, specific to vlc
 886  ****************************************************************************/
 887
 888 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 889 static int TrackCreateChunksIndex( demux_t *p_demux,
 890                                    mp4_track_t *p_demux_track )
 891 {
 892     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 893     MP4_Box_t *p_stsc;
 894
 895     unsigned int i_chunk;
 896     unsigned int i_index, i_last;
 897
 898     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 899           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 900         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 901     {
 902         return( VLC_EGENERIC );
 903     }
 904
 905     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 906     if( !p_demux_track->i_chunk_count )
 907     {
 908         msg_Warn( p_demux, "no chunk defined" );
 909         return( VLC_EGENERIC );
 910     }
 911     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 912                                    sizeof( mp4_chunk_t ) );
 913
 914     /* first we read chunk offset */
 915     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 916     {
 917         p_demux_track->chunk[i_chunk].i_offset =
 918                 p_co64->data.p_co64->i_chunk_offset[i_chunk];
 919     }
 920
 921     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 922         to be used for the sample XXX begin to 1
 923         We construct it begining at the end */
 924     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 925     i_index = p_stsc->data.p_stsc->i_entry_count;
 926     if( !i_index )
 927     {
 928         msg_Warn( p_demux, "cannot read chunk table or table empty" );
 929         return( VLC_EGENERIC );
 930     }
 931
 932     while( i_index )
 933     {
 934         i_index--;
 935         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 936                 i_chunk < i_last; i_chunk++ )
 937         {
 938             p_demux_track->chunk[i_chunk].i_sample_description_index =
 939                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 940             p_demux_track->chunk[i_chunk].i_sample_count =
 941                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 942         }
 943         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 944     }
 945
 946     p_demux_track->chunk[0].i_sample_first = 0;
 947     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 948     {
 949         p_demux_track->chunk[i_chunk].i_sample_first =
 950             p_demux_track->chunk[i_chunk-1].i_sample_first +
 951                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 952     }
 953
 954     msg_Dbg( p_demux,
 955              "track[Id 0x%x] read %d chunk",
 956              p_demux_track->i_track_ID,
 957              p_demux_track->i_chunk_count );
 958
 959     return( VLC_SUCCESS );
 960 }
 961 static int TrackCreateSamplesIndex( demux_t *p_demux,
 962                                     mp4_track_t *p_demux_track )
 963 {
 964     MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
 965                           ctts make same mapping but for composition time,
 966                           not yet used and probably not usefull */
 967     MP4_Box_t *p_stsz; /* gives sample size of each samples, there is also stz2
 968                           that uses a compressed form FIXME make them in libmp4
 969                           as a unique type */
 970     /* TODO use also stss and stsh table for seeking */
 971     /* FIXME use edit table */
 972     int64_t i_sample;
 973     int64_t i_chunk;
 974
 975     int64_t i_index;
 976     int64_t i_index_sample_used;
 977
 978     int64_t i_last_dts;
 979
 980     p_stts = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
 981     p_stsz = MP4_BoxGet( p_demux_track->p_stbl, "stsz" ); /* FIXME and stz2 */
 982
 983     if( ( !p_stts )||( !p_stsz ) )
 984     {
 985         msg_Warn( p_demux, "cannot read sample table" );
 986         return( VLC_EGENERIC );
 987     }
 988
 989     p_demux_track->i_sample_count = p_stsz->data.p_stsz->i_sample_count;
 990
 991
 992     /* for sample size, there are 2 case */
 993     if( p_stsz->data.p_stsz->i_sample_size )
 994     {
 995         /* 1: all sample have the same size, so no need to construct a table */
 996         p_demux_track->i_sample_size = p_stsz->data.p_stsz->i_sample_size;
 997         p_demux_track->p_sample_size = NULL;
 998     }
 999     else
1000     {
1001         /* 2: each sample can have a different size */
1002         p_demux_track->i_sample_size = 0;
1003         p_demux_track->p_sample_size =
1004             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1005
1006         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1007         {
1008             p_demux_track->p_sample_size[i_sample] =
1009                     p_stsz->data.p_stsz->i_entry_size[i_sample];
1010         }
1011     }
1012     /* we have extract all information from stsz,
1013         now use stts */
1014
1015     /* if we don't want to waste too much memory, we can't expand
1016        the box !, so each chunk will contain an "extract" of this table
1017        for fast research */
1018
1019     i_last_dts = 0;
1020     i_index = 0; i_index_sample_used =0;
1021
1022     /* create and init last data for each chunk */
1023     for(i_chunk = 0 ; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1024     {
1025
1026         int64_t i_entry, i_sample_count, i;
1027         /* save last dts */
1028         p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
1029     /* count how many entries needed for this chunk
1030        for p_sample_delta_dts and p_sample_count_dts */
1031
1032         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
1033
1034         i_entry = 0;
1035         while( i_sample_count > 0 )
1036         {
1037             i_sample_count -= p_stts->data.p_stts->i_sample_count[i_index+i_entry];
1038             if( i_entry == 0 )
1039             {
1040                 i_sample_count += i_index_sample_used; /* don't count already used sample
1041                                                    int this entry */
1042             }
1043             i_entry++;
1044         }
1045
1046         /* allocate them */
1047         p_demux_track->chunk[i_chunk].p_sample_count_dts =
1048             calloc( i_entry, sizeof( uint32_t ) );
1049         p_demux_track->chunk[i_chunk].p_sample_delta_dts =
1050             calloc( i_entry, sizeof( uint32_t ) );
1051
1052         /* now copy */
1053         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
1054         for( i = 0; i < i_entry; i++ )
1055         {
1056             int64_t i_used;
1057             int64_t i_rest;
1058
1059             i_rest = p_stts->data.p_stts->i_sample_count[i_index] - i_index_sample_used;
1060
1061             i_used = __MIN( i_rest, i_sample_count );
1062
1063             i_index_sample_used += i_used;
1064             i_sample_count -= i_used;
1065
1066             p_demux_track->chunk[i_chunk].p_sample_count_dts[i] = i_used;
1067
1068             p_demux_track->chunk[i_chunk].p_sample_delta_dts[i] =
1069                         p_stts->data.p_stts->i_sample_delta[i_index];
1070
1071             i_last_dts += i_used *
1072                     p_demux_track->chunk[i_chunk].p_sample_delta_dts[i];
1073
1074             if( i_index_sample_used >=
1075                              p_stts->data.p_stts->i_sample_count[i_index] )
1076             {
1077
1078                 i_index++;
1079                 i_index_sample_used = 0;
1080             }
1081         }
1082
1083     }
1084
1085     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1086              p_demux_track->i_track_ID,
1087              p_demux_track->i_sample_count,
1088              i_last_dts / p_demux_track->i_timescale );
1089
1090     return( VLC_SUCCESS );
1091 }
1092
1093 /*
1094  * TrackCreateES:
1095  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1096  */
1097 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1098                           unsigned int i_chunk, es_out_id_t **pp_es )
1099 {
1100     MP4_Box_t   *p_sample;
1101     MP4_Box_t   *p_esds;
1102
1103     *pp_es = NULL;
1104
1105     if( !p_track->chunk[i_chunk].i_sample_description_index )
1106     {
1107         msg_Warn( p_demux,
1108                   "invalid SampleEntry index (track[Id 0x%x])",
1109                   p_track->i_track_ID );
1110         return VLC_EGENERIC;
1111     }
1112
1113     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1114                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1115
1116     if( !p_sample || ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1117     {
1118         msg_Warn( p_demux,
1119                   "cannot find SampleEntry (track[Id 0x%x])",
1120                   p_track->i_track_ID );
1121         return( VLC_EGENERIC );
1122     }
1123
1124     p_track->p_sample = p_sample;
1125
1126     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1127     {
1128         MP4_Box_data_sample_soun_t *p_soun;
1129
1130         p_soun = p_sample->data.p_sample_soun;
1131
1132         if( p_soun->i_qt_version == 0 )
1133         {
1134             switch( p_sample->i_type )
1135             {
1136                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1137                     p_soun->i_qt_version = 1;
1138                     p_soun->i_sample_per_packet = 64;
1139                     p_soun->i_bytes_per_packet  = 34;
1140                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1141                     p_soun->i_bytes_per_sample  = 2;
1142                     break;
1143                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1144                     p_soun->i_qt_version = 1;
1145                     p_soun->i_sample_per_packet = 6;
1146                     p_soun->i_bytes_per_packet  = 2;
1147                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1148                     p_soun->i_bytes_per_sample  = 2;
1149                     break;
1150                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1151                     p_soun->i_qt_version = 1;
1152                     p_soun->i_sample_per_packet = 12;
1153                     p_soun->i_bytes_per_packet  = 2;
1154                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1155                     p_soun->i_bytes_per_sample  = 2;
1156                     break;
1157                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1158                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1159                     p_soun->i_samplesize = 8;
1160                     break;
1161                 default:
1162                     break;
1163             }
1164
1165         }
1166         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1167         {
1168             p_soun->i_qt_version = 0;
1169         }
1170     }
1171
1172
1173     /* It's a little ugly but .. there are special cases */
1174     switch( p_sample->i_type )
1175     {
1176         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1177         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1178             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1179             break;
1180         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1181             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1182             break;
1183         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1184             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1185             break;
1186
1187         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1188             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1189             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1190             /* FIXME UTF-8 doesn't work here ? */
1191             /* p_track->fmt.subs.psz_encoding = strdup( "UTF-8" ); */
1192             break;
1193
1194         default:
1195             p_track->fmt.i_codec = p_sample->i_type;
1196             break;
1197     }
1198
1199     /* now see if esds is present and if so create a data packet
1200         with decoder_specific_info  */
1201 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1202     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1203           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1204         ( p_esds->data.p_esds )&&
1205         ( p_decconfig ) )
1206     {
1207         /* First update information based on i_objectTypeIndication */
1208         switch( p_decconfig->i_objectTypeIndication )
1209         {
1210             case( 0x20 ): /* MPEG4 VIDEO */
1211                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1212                 break;
1213             case( 0x40):
1214                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1215                 break;
1216             case( 0x60):
1217             case( 0x61):
1218             case( 0x62):
1219             case( 0x63):
1220             case( 0x64):
1221             case( 0x65): /* MPEG2 video */
1222                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1223                 break;
1224             /* Theses are MPEG2-AAC */
1225             case( 0x66): /* main profile */
1226             case( 0x67): /* Low complexity profile */
1227             case( 0x68): /* Scaleable Sampling rate profile */
1228                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1229                 break;
1230             /* true MPEG 2 audio */
1231             case( 0x69):
1232                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1233                 break;
1234             case( 0x6a): /* MPEG1 video */
1235                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1236                 break;
1237             case( 0x6b): /* MPEG1 audio */
1238                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1239                 break;
1240             case( 0x6c ): /* jpeg */
1241                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1242                 break;
1243
1244             /* Private ID */
1245             case( 0xe0 ): /* NeroDigital: dvd subs */
1246                 if( p_track->fmt.i_cat == SPU_ES )
1247                 {
1248                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1249                     break;
1250                 }
1251             /* Fallback */
1252             default:
1253                 /* Unknown entry, but don't touch i_fourcc */
1254                 msg_Warn( p_demux,
1255                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1256                           p_decconfig->i_objectTypeIndication,
1257                           p_track->i_track_ID );
1258                 break;
1259         }
1260         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1261         if( p_track->fmt.i_extra > 0 )
1262         {
1263             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1264             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1265                     p_track->fmt.i_extra );
1266         }
1267     }
1268     else
1269     {
1270         switch( p_sample->i_type )
1271         {
1272             /* qt decoder, send the complete chunk */
1273             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1274             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1275             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1276             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1277             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1278                 p_track->fmt.i_extra =
1279                     p_sample->data.p_sample_vide->i_qt_image_description;
1280                 if( p_track->fmt.i_extra > 0 )
1281                 {
1282                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1283                     memcpy( p_track->fmt.p_extra,
1284                             p_sample->data.p_sample_vide->p_qt_image_description,
1285                             p_track->fmt.i_extra);
1286                 }
1287                 break;
1288             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1289             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1290             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1291             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1292                 p_track->fmt.i_extra =
1293                     p_sample->data.p_sample_soun->i_qt_description;
1294                 if( p_track->fmt.i_extra > 0 )
1295                 {
1296                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1297                     memcpy( p_track->fmt.p_extra,
1298                             p_sample->data.p_sample_soun->p_qt_description,
1299                             p_track->fmt.i_extra);
1300                 }
1301                 break;
1302
1303             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1304             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1305             {
1306                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1307
1308                 if( p_avcC )
1309                 {
1310                     /* Hack: use a packetizer to reecampsulate data in anexe B format */
1311                     msg_Dbg( p_demux, "avcC: size=%d", p_avcC->data.p_avcC->i_avcC );
1312                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1313                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1314                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC, p_track->fmt.i_extra );
1315                     p_track->fmt.b_packetized = VLC_FALSE;
1316                 }
1317                 else
1318                 {
1319                     msg_Err( p_demux, "missing avcC" );
1320                 }
1321                 break;
1322             }
1323
1324             default:
1325                 break;
1326         }
1327     }
1328
1329 #undef p_decconfig
1330
1331     /* some last initialisation */
1332     switch( p_track->fmt.i_cat )
1333     {
1334     case( VIDEO_ES ):
1335         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1336         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1337
1338         /* fall on display size */
1339         if( p_track->fmt.video.i_width <= 0 )
1340             p_track->fmt.video.i_width = p_track->i_width;
1341         if( p_track->fmt.video.i_height <= 0 )
1342             p_track->fmt.video.i_height = p_track->i_height;
1343
1344         /* Find out apect ratio from display size */
1345         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1346             /* Work-around buggy muxed files */
1347             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1348             p_track->fmt.video.i_aspect =
1349                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1350
1351         break;
1352
1353     case( AUDIO_ES ):
1354         p_track->fmt.audio.i_channels =
1355             p_sample->data.p_sample_soun->i_channelcount;
1356         p_track->fmt.audio.i_rate =
1357             p_sample->data.p_sample_soun->i_sampleratehi;
1358         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1359             p_sample->data.p_sample_soun->i_sampleratehi *
1360                 p_sample->data.p_sample_soun->i_samplesize;
1361         p_track->fmt.audio.i_bitspersample =
1362             p_sample->data.p_sample_soun->i_samplesize;
1363         break;
1364
1365     default:
1366         break;
1367     }
1368
1369     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1370
1371     return VLC_SUCCESS;
1372 }
1373
1374 /* given a time it return sample/chunk
1375  * it also update elst field of the track
1376  */
1377 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1378                                    int64_t i_start, uint32_t *pi_chunk,
1379                                    uint32_t *pi_sample )
1380 {
1381     demux_sys_t *p_sys = p_demux->p_sys;
1382     MP4_Box_t   *p_stss;
1383     uint64_t     i_dts;
1384     unsigned int i_sample;
1385     unsigned int i_chunk;
1386     int          i_index;
1387
1388     /* FIXME see if it's needed to check p_track->i_chunk_count */
1389     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1390     {
1391         return( VLC_EGENERIC );
1392     }
1393
1394     /* handle elst (find the correct one) */
1395     MP4_TrackSetELST( p_demux, p_track, i_start );
1396     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1397     {
1398         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1399         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1400
1401         /* now calculate i_start for this elst */
1402         /* offset */
1403         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1404         if( i_start < 0 )
1405         {
1406             *pi_chunk = 0;
1407             *pi_sample= 0;
1408
1409             return VLC_SUCCESS;
1410         }
1411         /* to track time scale */
1412         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1413         /* add elst offset */
1414         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1415              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1416             elst->i_media_time[p_track->i_elst] > 0 )
1417         {
1418             i_start += elst->i_media_time[p_track->i_elst];
1419         }
1420
1421         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1422                  "ms (track)", p_track->i_elst,
1423                  i_mvt * 1000 / p_sys->i_timescale,
1424                  i_start * 1000 / p_track->i_timescale );
1425     }
1426     else
1427     {
1428         /* convert absolute time to in timescale unit */
1429         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1430     }
1431
1432     /* we start from sample 0/chunk 0, hope it won't take too much time */
1433     /* *** find good chunk *** */
1434     for( i_chunk = 0; ; i_chunk++ )
1435     {
1436         if( i_chunk + 1 >= p_track->i_chunk_count )
1437         {
1438             /* at the end and can't check if i_start in this chunk,
1439                it will be check while searching i_sample */
1440             i_chunk = p_track->i_chunk_count - 1;
1441             break;
1442         }
1443
1444         if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1445             i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1446         {
1447             break;
1448         }
1449     }
1450
1451     /* *** find sample in the chunk *** */
1452     i_sample = p_track->chunk[i_chunk].i_sample_first;
1453     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1454     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1455     {
1456         if( i_dts +
1457             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1458             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1459         {
1460             i_dts    +=
1461                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1462                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1463
1464             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1465             i_index++;
1466         }
1467         else
1468         {
1469             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1470             {
1471                 break;
1472             }
1473             i_sample += ( i_start - i_dts ) /
1474                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1475             break;
1476         }
1477     }
1478
1479     if( i_sample >= p_track->i_sample_count )
1480     {
1481         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1482                   "(seeking too far) chunk=%d sample=%d",
1483                   p_track->i_track_ID, i_chunk, i_sample );
1484         return( VLC_EGENERIC );
1485     }
1486
1487
1488     /* *** Try to find nearest sync points *** */
1489     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1490     {
1491         unsigned int i_index;
1492         msg_Dbg( p_demux,
1493                     "track[Id 0x%x] using Sync Sample Box (stss)",
1494                     p_track->i_track_ID );
1495         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1496         {
1497             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1498             {
1499                 if( i_index > 0 )
1500                 {
1501                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1502                             i_sample,
1503                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1504                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1505                     /* new i_sample is less than old so i_chunk can only decreased */
1506                     while( i_chunk > 0 &&
1507                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1508                     {
1509                         i_chunk--;
1510                     }
1511                 }
1512                 else
1513                 {
1514                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1515                             i_sample,
1516                             p_stss->data.p_stss->i_sample_number[i_index] );
1517                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1518                     /* new i_sample is more than old so i_chunk can only increased */
1519                     while( i_chunk < p_track->i_chunk_count - 1 &&
1520                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1521                              p_track->chunk[i_chunk].i_sample_count )
1522                     {
1523                         i_chunk++;
1524                     }
1525                 }
1526                 break;
1527             }
1528         }
1529     }
1530     else
1531     {
1532         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1533                  "Sample Box (stss)", p_track->i_track_ID );
1534     }
1535
1536     *pi_chunk  = i_chunk;
1537     *pi_sample = i_sample;
1538
1539     return VLC_SUCCESS;
1540 }
1541
1542 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1543                                  unsigned int i_chunk, unsigned int i_sample )
1544 {
1545     vlc_bool_t b_reselect = VLC_FALSE;
1546
1547     /* now see if actual es is ok */
1548     if( p_track->i_chunk < 0 ||
1549         p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1550         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1551             p_track->chunk[i_chunk].i_sample_description_index )
1552     {
1553         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1554                   p_track->i_track_ID );
1555
1556         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1557                         p_track->p_es, &b_reselect );
1558
1559         es_out_Del( p_demux->out, p_track->p_es );
1560
1561         p_track->p_es = NULL;
1562
1563         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1564         {
1565             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1566                      p_track->i_track_ID );
1567
1568             p_track->b_ok       = VLC_FALSE;
1569             p_track->b_selected = VLC_FALSE;
1570             return VLC_EGENERIC;
1571         }
1572     }
1573
1574     /* select again the new decoder */
1575     if( b_reselect )
1576     {
1577         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1578     }
1579
1580     p_track->i_chunk    = i_chunk;
1581     p_track->i_sample   = i_sample;
1582
1583     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1584 }
1585
1586 /****************************************************************************
1587  * MP4_TrackCreate:
1588  ****************************************************************************
1589  * Parse track information and create all needed data to run a track
1590  * If it succeed b_ok is set to 1 else to 0
1591  ****************************************************************************/
1592 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1593                              MP4_Box_t *p_box_trak )
1594 {
1595     demux_sys_t *p_sys = p_demux->p_sys;
1596
1597     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1598     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1599     MP4_Box_t *p_elst;
1600
1601     MP4_Box_t *p_mdhd;
1602     MP4_Box_t *p_udta;
1603     MP4_Box_t *p_hdlr;
1604
1605     MP4_Box_t *p_vmhd;
1606     MP4_Box_t *p_smhd;
1607
1608     MP4_Box_t *p_drms;
1609
1610     unsigned int i;
1611     char language[4];
1612
1613     /* hint track unsuported */
1614
1615     /* set default value (-> track unusable) */
1616     p_track->b_ok       = VLC_FALSE;
1617     p_track->b_enable   = VLC_FALSE;
1618     p_track->b_selected = VLC_FALSE;
1619
1620     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1621
1622     if( !p_tkhd )
1623     {
1624         return;
1625     }
1626
1627     /* do we launch this track by default ? */
1628     p_track->b_enable =
1629         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1630
1631     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1632     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1633     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1634
1635     if( p_tref )
1636     {
1637 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1638     }
1639
1640     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1641     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1642
1643     if( ( !p_mdhd )||( !p_hdlr ) )
1644     {
1645         return;
1646     }
1647
1648     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1649
1650     for( i = 0; i < 3; i++ )
1651     {
1652         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1653     }
1654     language[3] = '\0';
1655
1656     switch( p_hdlr->data.p_hdlr->i_handler_type )
1657     {
1658         case( FOURCC_soun ):
1659             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1660             {
1661                 return;
1662             }
1663             p_track->fmt.i_cat = AUDIO_ES;
1664             break;
1665
1666         case( FOURCC_vide ):
1667             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1668             {
1669                 return;
1670             }
1671             p_track->fmt.i_cat = VIDEO_ES;
1672             break;
1673
1674         case( FOURCC_text ):
1675         case( FOURCC_subp ):
1676             p_track->fmt.i_cat = SPU_ES;
1677             break;
1678
1679         default:
1680             return;
1681     }
1682
1683     p_track->i_elst = 0;
1684     p_track->i_elst_time = 0;
1685     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1686     {
1687         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1688         int i;
1689
1690         msg_Warn( p_demux, "elst box found" );
1691         for( i = 0; i < elst->i_entry_count; i++ )
1692         {
1693             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd"ms) rate=%d.%d",
1694                      i,
1695                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1696                      elst->i_media_time[i] >= 0 ?
1697                         elst->i_media_time[i] * 1000 / p_track->i_timescale : -1,
1698                      elst->i_media_rate_integer[i],
1699                      elst->i_media_rate_fraction[i] );
1700         }
1701     }
1702
1703
1704 /*  TODO
1705     add support for:
1706     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1707 */
1708     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1709         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1710     {
1711         return;
1712     }
1713
1714     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1715     p_track->b_drms = p_drms != NULL;
1716     p_track->p_drms = p_track->b_drms ?
1717         p_drms->data.p_sample_soun->p_drms : NULL;
1718
1719     /* Set language */
1720     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1721     {
1722         p_track->fmt.psz_language = strdup( language );
1723     }
1724
1725     p_udta = MP4_BoxGet( p_box_trak, "udta" );
1726     if( p_udta )
1727     {
1728         MP4_Box_t *p_0xa9xxx;
1729         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1730                  p_0xa9xxx = p_0xa9xxx->p_next )
1731         {
1732             switch( p_0xa9xxx->i_type )
1733             {
1734                 case FOURCC_0xa9nam:
1735                     p_track->fmt.psz_description = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1736                     break;
1737             }
1738         }
1739     }
1740
1741     /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1742     if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1743     {
1744         MP4_Box_t *p_sample;
1745
1746         p_sample = MP4_BoxGet(  p_track->p_stsd, "[0]" );
1747         if( p_sample && p_sample->data.p_sample_soun)
1748         {
1749             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1750             if( p_soun->i_qt_version == 0 &&
1751                 p_track->i_timescale != p_soun->i_sampleratehi )
1752             {
1753                 msg_Warn( p_demux,
1754                           "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1755                           "qt_version == 0\n"
1756                           "Making both equal. (report any problem)",
1757                           p_track->i_timescale, p_soun->i_sampleratehi );
1758
1759                 if( p_soun->i_sampleratehi )
1760                     p_track->i_timescale = p_soun->i_sampleratehi;
1761                 else
1762                     p_soun->i_sampleratehi = p_track->i_timescale;
1763             }
1764         }
1765     }
1766
1767     /* Create chunk index table and sample index table */
1768     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1769         TrackCreateSamplesIndex( p_demux, p_track ) )
1770     {
1771         return; /* cannot create chunks index */
1772     }
1773
1774     p_track->i_chunk  = 0;
1775     p_track->i_sample = 0;
1776
1777     /* now create es */
1778     if( TrackCreateES( p_demux,
1779                        p_track, p_track->i_chunk,
1780                        &p_track->p_es ) )
1781     {
1782         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1783                  p_track->i_track_ID );
1784         return;
1785     }
1786
1787 #if 0
1788     {
1789         int i;
1790         for( i = 0; i < p_track->i_chunk_count; i++ )
1791         {
1792             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1793                      i, p_track->chunk[i].i_sample_count,
1794                      p_track->chunk[i].i_first_dts );
1795
1796         }
1797     }
1798 #endif
1799     p_track->b_ok = VLC_TRUE;
1800 }
1801
1802 /****************************************************************************
1803  * MP4_TrackDestroy:
1804  ****************************************************************************
1805  * Destroy a track created by MP4_TrackCreate.
1806  ****************************************************************************/
1807 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1808 {
1809     unsigned int i_chunk;
1810
1811     p_track->b_ok = VLC_FALSE;
1812     p_track->b_enable   = VLC_FALSE;
1813     p_track->b_selected = VLC_FALSE;
1814
1815     es_format_Clean( &p_track->fmt );
1816
1817     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1818     {
1819         if( p_track->chunk )
1820         {
1821            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1822            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1823         }
1824     }
1825     FREE( p_track->chunk );
1826
1827     if( !p_track->i_sample_size )
1828     {
1829         FREE( p_track->p_sample_size );
1830     }
1831 }
1832
1833 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1834                             mtime_t i_start )
1835 {
1836     if( !p_track->b_ok )
1837     {
1838         return VLC_EGENERIC;
1839     }
1840
1841     if( p_track->b_selected )
1842     {
1843         msg_Warn( p_demux, "track[Id 0x%x] already selected",
1844                   p_track->i_track_ID );
1845         return VLC_SUCCESS;
1846     }
1847
1848     return MP4_TrackSeek( p_demux, p_track, i_start );
1849 }
1850
1851 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1852 {
1853     if( !p_track->b_ok )
1854     {
1855         return;
1856     }
1857
1858     if( !p_track->b_selected )
1859     {
1860         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1861                   p_track->i_track_ID );
1862         return;
1863     }
1864     if( p_track->p_es )
1865     {
1866         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1867                         p_track->p_es, VLC_FALSE );
1868     }
1869
1870     p_track->b_selected = VLC_FALSE;
1871 }
1872
1873 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1874                           mtime_t i_start )
1875 {
1876     uint32_t i_chunk;
1877     uint32_t i_sample;
1878
1879     if( !p_track->b_ok )
1880     {
1881         return( VLC_EGENERIC );
1882     }
1883
1884     p_track->b_selected = VLC_FALSE;
1885
1886     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1887                                 &i_chunk, &i_sample ) )
1888     {
1889         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1890                   p_track->i_track_ID );
1891         return( VLC_EGENERIC );
1892     }
1893
1894     p_track->b_selected = VLC_TRUE;
1895
1896     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
1897         VLC_SUCCESS )
1898     {
1899         p_track->b_selected = VLC_TRUE;
1900     }
1901     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1902 }
1903
1904
1905 /*
1906  * 3 types: for audio
1907  *
1908  */
1909 #define QT_V0_MAX_SAMPLES    1500
1910 static int MP4_TrackSampleSize( mp4_track_t *p_track )
1911 {
1912     int i_size;
1913     MP4_Box_data_sample_soun_t *p_soun;
1914
1915     if( p_track->i_sample_size == 0 )
1916     {
1917         /* most simple case */
1918         return( p_track->p_sample_size[p_track->i_sample] );
1919     }
1920     if( p_track->fmt.i_cat != AUDIO_ES )
1921     {
1922         return( p_track->i_sample_size );
1923     }
1924
1925     if( p_track->i_sample_size != 1 )
1926     {
1927         //msg_Warn( p_demux, "SampleSize != 1" );
1928         return( p_track->i_sample_size );
1929     }
1930
1931     p_soun = p_track->p_sample->data.p_sample_soun;
1932
1933     if( p_soun->i_qt_version == 1 )
1934     {
1935         i_size = p_track->chunk[p_track->i_chunk].i_sample_count / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
1936     }
1937     else
1938     {
1939         /* FIXME */
1940         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
1941                 ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first );
1942         if( i_samples > QT_V0_MAX_SAMPLES )
1943         {
1944             i_samples = QT_V0_MAX_SAMPLES;
1945         }
1946         i_size = i_samples * p_soun->i_channelcount * p_soun->i_samplesize / 8;
1947     }
1948
1949     //fprintf( stderr, "size=%d\n", i_size );
1950     return( i_size );
1951 }
1952
1953
1954 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
1955 {
1956     unsigned int i_sample;
1957     uint64_t i_pos;
1958
1959
1960     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
1961
1962     if( p_track->i_sample_size )
1963     {
1964         MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
1965
1966         if( p_soun->i_qt_version == 0 )
1967         {
1968             i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) *
1969                         p_soun->i_channelcount * p_soun->i_samplesize / 8;
1970         }
1971         else
1972         {
1973             /* we read chunk by chunk */
1974             i_pos += 0;
1975         }
1976     }
1977     else
1978     {
1979         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
1980                 i_sample < p_track->i_sample; i_sample++ )
1981         {
1982             i_pos += p_track->p_sample_size[i_sample];
1983         }
1984
1985     }
1986     return( i_pos );
1987 }
1988
1989 static int  MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
1990 {
1991
1992     if( p_track->fmt.i_cat == AUDIO_ES &&
1993         p_track->i_sample_size != 0 )
1994     {
1995         MP4_Box_data_sample_soun_t *p_soun;
1996
1997         p_soun = p_track->p_sample->data.p_sample_soun;
1998
1999         if( p_track->i_sample_size != 1 )
2000         {
2001             p_track->i_sample += 1;
2002         }
2003         else if( p_soun->i_qt_version == 1 )
2004         {
2005             /* chunk by chunk */
2006             p_track->i_sample =
2007                 p_track->chunk[p_track->i_chunk].i_sample_first +
2008                 p_track->chunk[p_track->i_chunk].i_sample_count;
2009         }
2010         else
2011         {
2012             /* FIXME */
2013             p_track->i_sample += QT_V0_MAX_SAMPLES;
2014             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 )
2015             {
2016                 p_track->i_sample =
2017                     p_track->chunk[p_track->i_chunk].i_sample_first +
2018                     p_track->chunk[p_track->i_chunk].i_sample_count;
2019             }
2020         }
2021     }
2022     else
2023     {
2024         p_track->i_sample++;
2025     }
2026
2027     if( p_track->i_sample >= p_track->i_sample_count )
2028     {
2029         /* we have reach end of the track so free decoder stuff */
2030         msg_Warn( p_demux, "track[0x%x] will be disabled", p_track->i_track_ID );
2031         MP4_TrackUnselect( p_demux, p_track );
2032         return VLC_EGENERIC;
2033     }
2034
2035     /* Have we changed chunk ? */
2036     if( p_track->i_sample >=
2037             p_track->chunk[p_track->i_chunk].i_sample_first +
2038             p_track->chunk[p_track->i_chunk].i_sample_count )
2039     {
2040         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2041                                   p_track->i_sample ) )
2042         {
2043             msg_Warn( p_demux, "track[0x%x] will be disabled "
2044                       "(cannot restart decoder)", p_track->i_track_ID );
2045             MP4_TrackUnselect( p_demux, p_track );
2046             return VLC_EGENERIC;
2047         }
2048     }
2049
2050     /* Have we changed elst */
2051     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2052     {
2053         demux_sys_t *p_sys = p_demux->p_sys;
2054         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2055         int64_t i_mvt = MP4_TrackGetPTS( p_demux, p_track ) *
2056                         p_sys->i_timescale / (int64_t)1000000;
2057
2058         if( p_track->i_elst < elst->i_entry_count &&
2059             i_mvt >= p_track->i_elst_time +
2060                      elst->i_segment_duration[p_track->i_elst] )
2061         {
2062             MP4_TrackSetELST( p_demux, p_track,
2063                               MP4_TrackGetPTS( p_demux, p_track ) );
2064         }
2065     }
2066
2067     return VLC_SUCCESS;
2068 }
2069
2070 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2071                               int64_t i_time )
2072 {
2073     demux_sys_t *p_sys = p_demux->p_sys;
2074     int         i_elst_last = tk->i_elst;
2075
2076     /* handle elst (find the correct one) */
2077     tk->i_elst      = 0;
2078     tk->i_elst_time = 0;
2079     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2080     {
2081         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2082         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2083
2084         for( tk->i_elst = 0; tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2085         {
2086             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2087
2088             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2089             {
2090                 break;
2091             }
2092             tk->i_elst_time += i_dur;
2093         }
2094
2095         if( tk->i_elst >= elst->i_entry_count )
2096         {
2097             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2098             tk->i_elst = elst->i_entry_count - 1;
2099             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2100         }
2101
2102         if( elst->i_media_time[tk->i_elst] < 0 )
2103         {
2104             /* track offset */
2105             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2106         }
2107     }
2108     if( i_elst_last != tk->i_elst )
2109     {
2110         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2111     }
2112 }