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 the VideoLAN team
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, 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 <vlc_md5.h>
  32 #include "iso_lang.h"
  33 #include "vlc_meta.h"
  34
  35 #include "libmp4.h"
  36 #include "drms.h"
  37
  38 #ifdef UNDER_CE
  39 #define uint64_t int64_t
  40 #endif
  41
  42 /*****************************************************************************
  43  * Module descriptor
  44  *****************************************************************************/
  45 static int  Open ( vlc_object_t * );
  46 static void Close( vlc_object_t * );
  47
  48 vlc_module_begin();
  49     set_category( CAT_INPUT );
  50     set_subcategory( SUBCAT_INPUT_DEMUX );
  51     set_description( _("MP4 stream demuxer") );
  52     set_capability( "demux2", 242 );
  53     set_callbacks( Open, Close );
  54 vlc_module_end();
  55
  56 /*****************************************************************************
  57  * Local prototypes
  58  *****************************************************************************/
  59 static int   Demux   ( demux_t * );
  60 static int   DemuxRef( demux_t *p_demux ){ return 0;}
  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     uint32_t     *p_sample_count_pts;
  81     int32_t      *p_sample_offset_pts;  /* pts-dts */
  82
  83     /* TODO if needed add pts
  84         but quickly *add* support for edts and seeking */
  85
  86 } mp4_chunk_t;
  87
  88  /* Contain all needed information for read all track with vlc */
  89 typedef struct
  90 {
  91     int i_track_ID;     /* this should be unique */
  92
  93     int b_ok;           /* The track is usable */
  94     int b_enable;       /* is the trak enable by default */
  95     vlc_bool_t b_selected;     /* is the trak being played */
  96
  97     es_format_t fmt;
  98     es_out_id_t *p_es;
  99
 100     /* display size only ! */
 101     int i_width;
 102     int i_height;
 103
 104     /* more internal data */
 105     uint64_t        i_timescale;    /* time scale for this track only */
 106
 107     /* elst */
 108     int             i_elst;         /* current elst */
 109     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 110     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 111
 112     /* give the next sample to read, i_chunk is to find quickly where
 113       the sample is located */
 114     uint32_t         i_sample;       /* next sample to read */
 115     uint32_t         i_chunk;        /* chunk where next sample is stored */
 116     /* total count of chunk and sample */
 117     uint32_t         i_chunk_count;
 118     uint32_t         i_sample_count;
 119
 120     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 121
 122     /* sample size, p_sample_size defined only if i_sample_size == 0
 123         else i_sample_size is size for all sample */
 124     uint32_t         i_sample_size;
 125     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 126                                     too much time to do sumations each time*/
 127
 128     MP4_Box_t *p_stbl;  /* will contain all timing information */
 129     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 130     MP4_Box_t *p_sample;/* point on actual sdsd */
 131
 132     vlc_bool_t b_drms;
 133     void      *p_drms;
 134
 135 } mp4_track_t;
 136
 137
 138 struct demux_sys_t
 139 {
 140     MP4_Box_t    *p_root;      /* container for the whole file */
 141
 142     mtime_t      i_pcr;
 143
 144     uint64_t     i_time;        /* time position of the presentation
 145                                  * in movie timescale */
 146     uint64_t     i_timescale;   /* movie time scale */
 147     uint64_t     i_duration;    /* movie duration */
 148     unsigned int i_tracks;      /* number of tracks */
 149     mp4_track_t *track;    /* array of track */
 150 };
 151
 152 /*****************************************************************************
 153  * Declaration of local function
 154  *****************************************************************************/
 155 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 156 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 157
 158 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 159 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 160
 161 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 162
 163 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 164 static int      MP4_TrackSampleSize( mp4_track_t * );
 165 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 166 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 167
 168 /* Return time in s of a track */
 169 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 170 {
 171 #define chunk p_track->chunk[p_track->i_chunk]
 172
 173     unsigned int i_index = 0;
 174     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 175     int64_t i_dts = chunk.i_first_dts;
 176
 177     while( i_sample > 0 )
 178     {
 179         if( i_sample > chunk.p_sample_count_dts[i_index] )
 180         {
 181             i_dts += chunk.p_sample_count_dts[i_index] *
 182                 chunk.p_sample_delta_dts[i_index];
 183             i_sample -= chunk.p_sample_count_dts[i_index];
 184             i_index++;
 185         }
 186         else
 187         {
 188             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 189             i_sample = 0;
 190             break;
 191         }
 192     }
 193
 194 #undef chunk
 195
 196     /* now handle elst */
 197     if( p_track->p_elst )
 198     {
 199         demux_sys_t         *p_sys = p_demux->p_sys;
 200         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 201
 202         /* convert to offset */
 203         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 204               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 205             elst->i_media_time[p_track->i_elst] > 0 )
 206         {
 207             i_dts -= elst->i_media_time[p_track->i_elst];
 208         }
 209
 210         /* add i_elst_time */
 211         i_dts += p_track->i_elst_time * p_track->i_timescale /
 212             p_sys->i_timescale;
 213
 214         if( i_dts < 0 ) i_dts = 0;
 215     }
 216
 217     return I64C(1000000) * i_dts / p_track->i_timescale;
 218 }
 219
 220 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
 221 {
 222     mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
 223     unsigned int i_index = 0;
 224     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 225
 226     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 227         return -1;
 228
 229     for( i_index = 0;; i_index++ )
 230     {
 231         if( i_sample < ck->p_sample_count_pts[i_index] )
 232             return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
 233                    (int64_t)p_track->i_timescale;
 234
 235         i_sample -= ck->p_sample_count_pts[i_index];
 236     }
 237 }
 238
 239 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 240 {
 241     return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
 242 }
 243
 244 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
 245
 246 /*****************************************************************************
 247  * Open: check file and initializes MP4 structures
 248  *****************************************************************************/
 249 static int Open( vlc_object_t * p_this )
 250 {
 251     demux_t  *p_demux = (demux_t *)p_this;
 252     demux_sys_t     *p_sys;
 253
 254     uint8_t         *p_peek;
 255
 256     MP4_Box_t       *p_ftyp;
 257     MP4_Box_t       *p_rmra;
 258     MP4_Box_t       *p_mvhd;
 259     MP4_Box_t       *p_trak;
 260
 261     unsigned int    i;
 262     vlc_bool_t      b_seekable;
 263
 264     /* A little test to see if it could be a mp4 */
 265     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
 266
 267     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 268     {
 269         case FOURCC_ftyp:
 270         case FOURCC_moov:
 271         case FOURCC_foov:
 272         case FOURCC_moof:
 273         case FOURCC_mdat:
 274         case FOURCC_udta:
 275         case FOURCC_free:
 276         case FOURCC_skip:
 277         case FOURCC_wide:
 278         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 279             break;
 280          default:
 281             return VLC_EGENERIC;
 282     }
 283
 284     /* I need to seek */
 285     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 286     if( !b_seekable )
 287     {
 288         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 289         return VLC_EGENERIC;
 290     }
 291
 292     /*Set exported functions */
 293     p_demux->pf_demux = Demux;
 294     p_demux->pf_control = Control;
 295
 296     /* create our structure that will contains all data */
 297     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 298     memset( p_sys, 0, sizeof( demux_sys_t ) );
 299
 300     /* Now load all boxes ( except raw data ) */
 301     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 302     {
 303         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 304         goto error;
 305     }
 306
 307     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 308
 309     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 310     {
 311         switch( p_ftyp->data.p_ftyp->i_major_brand )
 312         {
 313             case( FOURCC_isom ):
 314                 msg_Dbg( p_demux,
 315                          "ISO Media file (isom) version %d.",
 316                          p_ftyp->data.p_ftyp->i_minor_version );
 317                 break;
 318             default:
 319                 msg_Dbg( p_demux,
 320                          "unrecognized major file specification (%4.4s).",
 321                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 322                 break;
 323         }
 324     }
 325     else
 326     {
 327         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 328     }
 329
 330     /* the file need to have one moov box */
 331     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 332     {
 333         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 334
 335         if( !p_foov )
 336         {
 337             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 338             goto error;
 339         }
 340         /* we have a free box as a moov, rename it */
 341         p_foov->i_type = FOURCC_moov;
 342     }
 343
 344     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 345     {
 346         playlist_t *p_playlist;
 347         playlist_item_t *p_item;
 348         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 349         int        i;
 350         vlc_bool_t b_play = VLC_FALSE;
 351
 352         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 353
 354         p_playlist =
 355             (playlist_t *)vlc_object_find( p_demux,
 356                                            VLC_OBJECT_PLAYLIST,
 357                                            FIND_ANYWHERE );
 358         if( p_playlist )
 359         {
 360             p_item = playlist_LockItemGetByInput( p_playlist,
 361                       ((input_thread_t *)p_demux->p_parent)->input.p_item );
 362             playlist_ItemToNode( p_playlist, p_item );
 363
 364             for( i = 0; i < i_count; i++ )
 365             {
 366                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 367                 char      *psz_ref;
 368                 uint32_t  i_ref_type;
 369
 370                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 371                 {
 372                     continue;
 373                 }
 374                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 375
 376                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 377                          psz_ref, (char*)&i_ref_type );
 378
 379                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 380                 {
 381                     if( strstr( psz_ref, "qt5gateQT" ) )
 382                     {
 383                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 384                         continue;
 385                     }
 386                     if( !strncmp( psz_ref, "http://", 7 ) ||
 387                         !strncmp( psz_ref, "rtsp://", 7 ) )
 388                     {
 389                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 390                         if( p_item )
 391                         {
 392                             playlist_item_t *p_child =
 393                                         playlist_ItemNew( p_playlist,
 394                                                           psz_ref, psz_ref );
 395                             if( p_child )
 396                             {
 397                                 playlist_NodeAddItem( p_playlist, p_child,
 398                                                  p_item->pp_parents[0]->i_view,
 399                                                  p_item, PLAYLIST_APPEND,
 400                                                  PLAYLIST_END );
 401                                 playlist_CopyParents( p_item, p_child );
 402                                 b_play = VLC_TRUE;
 403                             }
 404                         }
 405                     }
 406                     else
 407                     {
 408                         /* msg dbg relative ? */
 409                         int i_path_size = strlen( p_demux->psz_access ) + 3 +
 410                                          strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1;
 411 #ifdef HAVE_ALLOCA
 412                         char *psz_absolute = alloca( i_path_size );
 413 #else
 414                         char *psz_absolute = (char *)malloc( i_path_size );
 415 #endif
 416                         char *end = strrchr( p_demux->psz_path, '/' );
 417
 418                         if( end )
 419                         {
 420                             int i_len = end + 1 - p_demux->psz_path;
 421
 422                             strcpy( psz_absolute, p_demux->psz_access );
 423                             strcat( psz_absolute, "://" );
 424                             strncat( psz_absolute, p_demux->psz_path, i_len);
 425                         }
 426                         else
 427                         {
 428                             strcpy( psz_absolute, "" );
 429                         }
 430                         strcat( psz_absolute, psz_ref );
 431                         msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
 432                         if( p_item )
 433                         {
 434                             playlist_item_t *p_child =
 435                                         playlist_ItemNew( p_playlist,
 436                                                           psz_absolute,
 437                                                           psz_absolute );
 438                             if( p_child )
 439                             {
 440                                 playlist_NodeAddItem( p_playlist, p_child,
 441                                                  p_item->pp_parents[0]->i_view,
 442                                                  p_item, PLAYLIST_APPEND,
 443                                                  PLAYLIST_END );
 444                                 playlist_CopyParents( p_item, p_child );
 445                                 b_play = VLC_TRUE;
 446                             }
 447                         }
 448 #ifndef HAVE_ALLOCA
 449                         free( psz_absolute );
 450 #endif
 451                     }
 452                 }
 453                 else
 454                 {
 455                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 456                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 457                 }
 458             }
 459             if( b_play == VLC_TRUE )
 460             {
 461                  playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 462                                    p_playlist->status.i_view,
 463                                    p_playlist->status.p_item, NULL );
 464             }
 465             vlc_object_release( p_playlist );
 466         }
 467         else
 468         {
 469             msg_Err( p_demux, "can't find playlist" );
 470         }
 471     }
 472
 473     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 474     {
 475         if( !p_rmra )
 476         {
 477             msg_Err( p_demux, "cannot find /moov/mvhd" );
 478             goto error;
 479         }
 480         else
 481         {
 482             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 483             p_demux->pf_demux = DemuxRef;
 484             return VLC_SUCCESS;
 485         }
 486     }
 487     else
 488     {
 489         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 490         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 491     }
 492
 493     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 494     {
 495         msg_Err( p_demux, "cannot find any /moov/trak" );
 496         goto error;
 497     }
 498     msg_Dbg( p_demux, "find %d track%c",
 499                         p_sys->i_tracks,
 500                         p_sys->i_tracks ? 's':' ' );
 501
 502     /* allocate memory */
 503     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 504     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 505
 506     /* now process each track and extract all usefull information */
 507     for( i = 0; i < p_sys->i_tracks; i++ )
 508     {
 509         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 510         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 511
 512         if( p_sys->track[i].b_ok )
 513         {
 514             char *psz_cat;
 515             switch( p_sys->track[i].fmt.i_cat )
 516             {
 517                 case( VIDEO_ES ):
 518                     psz_cat = "video";
 519                     break;
 520                 case( AUDIO_ES ):
 521                     psz_cat = "audio";
 522                     break;
 523                 case( SPU_ES ):
 524                     psz_cat = "subtitle";
 525                     break;
 526
 527                 default:
 528                     psz_cat = "unknown";
 529                     break;
 530             }
 531
 532             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 533                      p_sys->track[i].i_track_ID, psz_cat,
 534                      p_sys->track[i].b_enable ? "enable":"disable",
 535                      p_sys->track[i].fmt.psz_language ?
 536                      p_sys->track[i].fmt.psz_language : "undef" );
 537         }
 538         else
 539         {
 540             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 541                      p_sys->track[i].i_track_ID );
 542         }
 543
 544     }
 545     return VLC_SUCCESS;
 546
 547 error:
 548     if( p_sys->p_root )
 549     {
 550         MP4_BoxFree( p_demux->s, p_sys->p_root );
 551     }
 552     free( p_sys );
 553     return VLC_EGENERIC;
 554 }
 555
 556 /*****************************************************************************
 557  * Demux: read packet and send them to decoders
 558  *****************************************************************************
 559  * TODO check for newly selected track (ie audio upt to now )
 560  *****************************************************************************/
 561 static int Demux( demux_t *p_demux )
 562 {
 563     demux_sys_t *p_sys = p_demux->p_sys;
 564     unsigned int i_track;
 565
 566
 567     unsigned int i_track_selected;
 568
 569     /* check for newly selected/unselected track */
 570     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 571          i_track++ )
 572     {
 573         mp4_track_t *tk = &p_sys->track[i_track];
 574         vlc_bool_t b;
 575
 576         if( !tk->b_ok ||
 577             ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
 578         {
 579             continue;
 580         }
 581
 582         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 583
 584         if( tk->b_selected && !b )
 585         {
 586             MP4_TrackUnselect( p_demux, tk );
 587         }
 588         else if( !tk->b_selected && b)
 589         {
 590             MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 591         }
 592
 593         if( tk->b_selected )
 594         {
 595             i_track_selected++;
 596         }
 597     }
 598
 599     if( i_track_selected <= 0 )
 600     {
 601         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 602         if( p_sys->i_timescale > 0 )
 603         {
 604             int64_t i_length = (mtime_t)1000000 *
 605                                (mtime_t)p_sys->i_duration /
 606                                (mtime_t)p_sys->i_timescale;
 607             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 608                 return 0;
 609             return 1;
 610         }
 611
 612         msg_Warn( p_demux, "no track selected, exiting..." );
 613         return 0;
 614     }
 615
 616     /* first wait for the good time to read a packet */
 617     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
 618
 619     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 620
 621     /* we will read 100ms for each stream so ...*/
 622     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 623
 624     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 625     {
 626         mp4_track_t *tk = &p_sys->track[i_track];
 627
 628         if( !tk->b_ok || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
 629         {
 630             continue;
 631         }
 632
 633         while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 634         {
 635 #if 0
 636             msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
 637                      MP4_TrackGetDTS( p_demux, tk ),
 638                      MP4_GetMoviePTS( p_sys ) );
 639 #endif
 640
 641             if( MP4_TrackSampleSize( tk ) > 0 )
 642             {
 643                 block_t *p_block;
 644                 int64_t i_delta;
 645
 646                 /* go,go go ! */
 647                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 648                 {
 649                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 650                               tk->i_track_ID );
 651                     MP4_TrackUnselect( p_demux, tk );
 652                     break;
 653                 }
 654
 655                 /* now read pes */
 656                 if( !(p_block =
 657                          stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
 658                 {
 659                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 660                               tk->i_track_ID );
 661                     MP4_TrackUnselect( p_demux, tk );
 662                     break;
 663                 }
 664
 665                 if( tk->b_drms && tk->p_drms )
 666                 {
 667                     drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
 668                                   p_block->i_buffer );
 669                 }
 670                 else if( tk->fmt.i_cat == SPU_ES )
 671                 {
 672                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
 673                         p_block->i_buffer >= 2 )
 674                     {
 675                         uint16_t i_size = GetWBE( p_block->p_buffer );
 676
 677                         if( i_size + 2 <= p_block->i_buffer )
 678                         {
 679                             char *p;
 680                             /* remove the length field, and append a '\0' */
 681                             memmove( &p_block->p_buffer[0],
 682                                      &p_block->p_buffer[2], i_size );
 683                             p_block->p_buffer[i_size] = '\0';
 684                             p_block->i_buffer = i_size + 1;
 685
 686                             /* convert \r -> \n */
 687                             while( ( p = strchr( p_block->p_buffer, '\r' ) ) )
 688                             {
 689                                 *p = '\n';
 690                             }
 691                         }
 692                         else
 693                         {
 694                             /* Invalid */
 695                             p_block->i_buffer = 0;
 696                         }
 697                     }
 698                 }
 699                 /* dts */
 700                 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
 701                 /* pts */
 702                 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
 703                 if( i_delta != -1 )
 704                     p_block->i_pts = p_block->i_dts + i_delta;
 705                 else if( tk->fmt.i_cat != VIDEO_ES )
 706                     p_block->i_pts = p_block->i_dts;
 707                 else
 708                     p_block->i_pts = 0;
 709
 710                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 711                     es_out_Send( p_demux->out, tk->p_es, p_block );
 712             }
 713
 714             /* Next sample */
 715             if( MP4_TrackNextSample( p_demux, tk ) )
 716             {
 717                 break;
 718             }
 719         }
 720     }
 721
 722     return 1;
 723 }
 724 /*****************************************************************************
 725  * Seek: Got to i_date
 726 ******************************************************************************/
 727 static int Seek( demux_t *p_demux, mtime_t i_date )
 728 {
 729     demux_sys_t *p_sys = p_demux->p_sys;
 730     unsigned int i_track;
 731
 732     /* First update update global time */
 733     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 734     p_sys->i_pcr  = i_date;
 735
 736     /* Now for each stream try to go to this time */
 737     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 738     {
 739         mp4_track_t *tk = &p_sys->track[i_track];
 740         MP4_TrackSeek( p_demux, tk, i_date );
 741     }
 742     return VLC_SUCCESS;
 743 }
 744
 745 /*****************************************************************************
 746  * Control:
 747  *****************************************************************************/
 748 static int Control( demux_t *p_demux, int i_query, va_list args )
 749 {
 750     demux_sys_t *p_sys = p_demux->p_sys;
 751
 752     double f, *pf;
 753     int64_t i64, *pi64;
 754
 755     switch( i_query )
 756     {
 757         case DEMUX_GET_POSITION:
 758             pf = (double*)va_arg( args, double * );
 759             if( p_sys->i_duration > 0 )
 760             {
 761                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 762             }
 763             else
 764             {
 765                 *pf = 0.0;
 766             }
 767             return VLC_SUCCESS;
 768
 769         case DEMUX_SET_POSITION:
 770             f = (double)va_arg( args, double );
 771             if( p_sys->i_timescale > 0 )
 772             {
 773                 i64 = (int64_t)( f * (double)1000000 *
 774                                  (double)p_sys->i_duration /
 775                                  (double)p_sys->i_timescale );
 776                 return Seek( p_demux, i64 );
 777             }
 778             else return VLC_SUCCESS;
 779
 780         case DEMUX_GET_TIME:
 781             pi64 = (int64_t*)va_arg( args, int64_t * );
 782             if( p_sys->i_timescale > 0 )
 783             {
 784                 *pi64 = (mtime_t)1000000 *
 785                         (mtime_t)p_sys->i_time /
 786                         (mtime_t)p_sys->i_timescale;
 787             }
 788             else *pi64 = 0;
 789             return VLC_SUCCESS;
 790
 791         case DEMUX_SET_TIME:
 792             i64 = (int64_t)va_arg( args, int64_t );
 793             return Seek( p_demux, i64 );
 794
 795         case DEMUX_GET_LENGTH:
 796             pi64 = (int64_t*)va_arg( args, int64_t * );
 797             if( p_sys->i_timescale > 0 )
 798             {
 799                 *pi64 = (mtime_t)1000000 *
 800                         (mtime_t)p_sys->i_duration /
 801                         (mtime_t)p_sys->i_timescale;
 802             }
 803             else *pi64 = 0;
 804             return VLC_SUCCESS;
 805
 806         case DEMUX_GET_FPS:
 807             msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
 808             return VLC_EGENERIC;
 809
 810         case DEMUX_GET_META:
 811         {
 812             vlc_meta_t **pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
 813             vlc_meta_t *meta;
 814             MP4_Box_t  *p_udta   = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 815             MP4_Box_t  *p_0xa9xxx;
 816             if( p_udta == NULL )
 817             {
 818                 return VLC_EGENERIC;
 819             }
 820             *pp_meta = meta = vlc_meta_New();
 821             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 822                  p_0xa9xxx = p_0xa9xxx->p_next )
 823             {
 824                 char *psz_utf;
 825                 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
 826                     continue;
 827                 psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
 828                 if( psz_utf == NULL )
 829                     continue;
 830                 /* FIXME FIXME: should convert from whatever the character
 831                  * encoding of MP4 meta data is to UTF-8. */
 832                 EnsureUTF8( psz_utf );
 833
 834                 switch( p_0xa9xxx->i_type )
 835                 {
 836                 case FOURCC_0xa9nam: /* Full name */
 837                     vlc_meta_Add( meta, VLC_META_TITLE, psz_utf );
 838                     break;
 839                 case FOURCC_0xa9aut:
 840                     vlc_meta_Add( meta, VLC_META_AUTHOR, psz_utf );
 841                     break;
 842                 case FOURCC_0xa9ART:
 843                     vlc_meta_Add( meta, VLC_META_ARTIST, psz_utf );
 844                     break;
 845                 case FOURCC_0xa9cpy:
 846                     vlc_meta_Add( meta, VLC_META_COPYRIGHT, psz_utf );
 847                     break;
 848                 case FOURCC_0xa9day: /* Creation Date */
 849                     vlc_meta_Add( meta, VLC_META_DATE, psz_utf );
 850                     break;
 851                 case FOURCC_0xa9des: /* Description */
 852                     vlc_meta_Add( meta, VLC_META_DESCRIPTION, psz_utf );
 853                     break;
 854                 case FOURCC_0xa9gen: /* Genre */
 855                     vlc_meta_Add( meta, VLC_META_GENRE, psz_utf );
 856                     break;
 857
 858                 case FOURCC_0xa9swr:
 859                 case FOURCC_0xa9inf: /* Information */
 860                 case FOURCC_0xa9alb: /* Album */
 861                 case FOURCC_0xa9dir: /* Director */
 862                 case FOURCC_0xa9dis: /* Disclaimer */
 863                 case FOURCC_0xa9enc: /* Encoded By */
 864                 case FOURCC_0xa9trk: /* Track */
 865                 case FOURCC_0xa9cmt: /* Commment */
 866                 case FOURCC_0xa9url: /* URL */
 867                 case FOURCC_0xa9req: /* Requirements */
 868                 case FOURCC_0xa9fmt: /* Original Format */
 869                 case FOURCC_0xa9dsa: /* Display Source As */
 870                 case FOURCC_0xa9hst: /* Host Computer */
 871                 case FOURCC_0xa9prd: /* Producer */
 872                 case FOURCC_0xa9prf: /* Performers */
 873                 case FOURCC_0xa9ope: /* Original Performer */
 874                 case FOURCC_0xa9src: /* Providers Source Content */
 875                 case FOURCC_0xa9wrt: /* Writer */
 876                 case FOURCC_0xa9com: /* Composer */
 877                 case FOURCC_WLOC:    /* Window Location */
 878                     /* TODO one day, but they aren't really meaningfull */
 879                     break;
 880
 881                 default:
 882                     break;
 883                 }
 884                 free( psz_utf );
 885             }
 886             return VLC_SUCCESS;
 887         }
 888
 889         case DEMUX_GET_TITLE_INFO:
 890         case DEMUX_SET_NEXT_DEMUX_TIME:
 891         case DEMUX_SET_GROUP:
 892             return VLC_EGENERIC;
 893
 894         default:
 895             msg_Warn( p_demux, "control query %u unimplemented", i_query );
 896             return VLC_EGENERIC;
 897     }
 898 }
 899
 900 /*****************************************************************************
 901  * Close: frees unused data
 902  *****************************************************************************/
 903 static void Close ( vlc_object_t * p_this )
 904 {
 905     unsigned int i_track;
 906     demux_t *  p_demux = (demux_t *)p_this;
 907     demux_sys_t *p_sys = p_demux->p_sys;
 908
 909     msg_Dbg( p_demux, "freeing all memory" );
 910
 911     MP4_BoxFree( p_demux->s, p_sys->p_root );
 912     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 913     {
 914         MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
 915     }
 916     FREE( p_sys->track );
 917
 918     free( p_sys );
 919 }
 920
 921
 922
 923 /****************************************************************************
 924  * Local functions, specific to vlc
 925  ****************************************************************************/
 926
 927 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 928 static int TrackCreateChunksIndex( demux_t *p_demux,
 929                                    mp4_track_t *p_demux_track )
 930 {
 931     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 932     MP4_Box_t *p_stsc;
 933
 934     unsigned int i_chunk;
 935     unsigned int i_index, i_last;
 936
 937     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 938           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 939         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 940     {
 941         return( VLC_EGENERIC );
 942     }
 943
 944     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 945     if( !p_demux_track->i_chunk_count )
 946     {
 947         msg_Warn( p_demux, "no chunk defined" );
 948         return( VLC_EGENERIC );
 949     }
 950     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 951                                    sizeof( mp4_chunk_t ) );
 952
 953     /* first we read chunk offset */
 954     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 955     {
 956         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
 957
 958         ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
 959
 960         ck->i_first_dts = 0;
 961         ck->p_sample_count_dts = NULL;
 962         ck->p_sample_delta_dts = NULL;
 963         ck->p_sample_count_pts = NULL;
 964         ck->p_sample_offset_pts = NULL;
 965     }
 966
 967     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 968         to be used for the sample XXX begin to 1
 969         We construct it begining at the end */
 970     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 971     i_index = p_stsc->data.p_stsc->i_entry_count;
 972     if( !i_index )
 973     {
 974         msg_Warn( p_demux, "cannot read chunk table or table empty" );
 975         return( VLC_EGENERIC );
 976     }
 977
 978     while( i_index-- )
 979     {
 980         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 981              i_chunk < i_last; i_chunk++ )
 982         {
 983             p_demux_track->chunk[i_chunk].i_sample_description_index =
 984                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 985             p_demux_track->chunk[i_chunk].i_sample_count =
 986                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 987         }
 988         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 989     }
 990
 991     p_demux_track->chunk[0].i_sample_first = 0;
 992     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 993     {
 994         p_demux_track->chunk[i_chunk].i_sample_first =
 995             p_demux_track->chunk[i_chunk-1].i_sample_first +
 996                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 997     }
 998
 999     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1000              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1001
1002     return VLC_SUCCESS;
1003 }
1004
1005 static int TrackCreateSamplesIndex( demux_t *p_demux,
1006                                     mp4_track_t *p_demux_track )
1007 {
1008     MP4_Box_t *p_box;
1009     MP4_Box_data_stsz_t *stsz;
1010     MP4_Box_data_stts_t *stts;
1011     /* TODO use also stss and stsh table for seeking */
1012     /* FIXME use edit table */
1013     int64_t i_sample;
1014     int64_t i_chunk;
1015
1016     int64_t i_index;
1017     int64_t i_index_sample_used;
1018
1019     int64_t i_last_dts;
1020
1021     /* Find stsz
1022      *  Gives the sample size for each samples. There is also a stz2 table
1023      *  (compressed form) that we need to implement TODO */
1024     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1025     if( !p_box )
1026     {
1027         /* FIXME and stz2 */
1028         msg_Warn( p_demux, "cannot find STSZ box" );
1029         return VLC_EGENERIC;
1030     }
1031     stsz = p_box->data.p_stsz;
1032
1033     /* Find stts
1034      *  Gives mapping between sample and decoding time
1035      */
1036     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1037     if( !p_box )
1038     {
1039         msg_Warn( p_demux, "cannot find STTS box" );
1040         return VLC_EGENERIC;
1041     }
1042     stts = p_box->data.p_stts;
1043
1044     /* Use stsz table to create a sample number -> sample size table */
1045     p_demux_track->i_sample_count = stsz->i_sample_count;
1046     if( stsz->i_sample_size )
1047     {
1048         /* 1: all sample have the same size, so no need to construct a table */
1049         p_demux_track->i_sample_size = stsz->i_sample_size;
1050         p_demux_track->p_sample_size = NULL;
1051     }
1052     else
1053     {
1054         /* 2: each sample can have a different size */
1055         p_demux_track->i_sample_size = 0;
1056         p_demux_track->p_sample_size =
1057             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1058
1059         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1060         {
1061             p_demux_track->p_sample_size[i_sample] =
1062                     stsz->i_entry_size[i_sample];
1063         }
1064     }
1065
1066     /* Use stts table to create a sample number -> dts table.
1067      * XXX: if we don't want to waste too much memory, we can't expand
1068      *  the box! so each chunk will contain an "extract" of this table
1069      *  for fast research (problem with raw stream where a sample is sometime
1070      *  just channels*bits_per_sample/8 */
1071
1072     i_last_dts = 0;
1073     i_index = 0; i_index_sample_used = 0;
1074     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1075     {
1076         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1077         int64_t i_entry, i_sample_count, i;
1078
1079         /* save last dts */
1080         ck->i_first_dts = i_last_dts;
1081
1082         /* count how many entries are needed for this chunk
1083          * for p_sample_delta_dts and p_sample_count_dts */
1084         i_sample_count = ck->i_sample_count;
1085
1086         i_entry = 0;
1087         while( i_sample_count > 0 )
1088         {
1089             i_sample_count -= stts->i_sample_count[i_index+i_entry];
1090             /* don't count already used sample in this entry */
1091             if( i_entry == 0 )
1092                 i_sample_count += i_index_sample_used;
1093
1094             i_entry++;
1095         }
1096
1097         /* allocate them */
1098         ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1099         ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1100
1101         /* now copy */
1102         i_sample_count = ck->i_sample_count;
1103         for( i = 0; i < i_entry; i++ )
1104         {
1105             int64_t i_used;
1106             int64_t i_rest;
1107
1108             i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1109
1110             i_used = __MIN( i_rest, i_sample_count );
1111
1112             i_index_sample_used += i_used;
1113             i_sample_count -= i_used;
1114
1115             ck->p_sample_count_dts[i] = i_used;
1116             ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1117
1118             i_last_dts += i_used * ck->p_sample_delta_dts[i];
1119
1120             if( i_index_sample_used >= stts->i_sample_count[i_index] )
1121             {
1122                 i_index++;
1123                 i_index_sample_used = 0;
1124             }
1125         }
1126     }
1127
1128     /* Find ctts
1129      *  Gives the delta between decoding time (dts) and composition table (pts)
1130      */
1131     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1132     if( p_box )
1133     {
1134         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1135
1136         msg_Warn( p_demux, "CTTS table" );
1137
1138         /* Create pts-dts table per chunk */
1139         i_index = 0; i_index_sample_used = 0;
1140         for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1141         {
1142             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1143             int64_t i_entry, i_sample_count, i;
1144
1145             /* count how many entries are needed for this chunk
1146              * for p_sample_delta_dts and p_sample_count_dts */
1147             i_sample_count = ck->i_sample_count;
1148
1149             i_entry = 0;
1150             while( i_sample_count > 0 )
1151             {
1152                 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1153
1154                 /* don't count already used sample in this entry */
1155                 if( i_entry == 0 )
1156                     i_sample_count += i_index_sample_used;
1157
1158                 i_entry++;
1159             }
1160
1161             /* allocate them */
1162             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1163             ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1164
1165             /* now copy */
1166             i_sample_count = ck->i_sample_count;
1167             for( i = 0; i < i_entry; i++ )
1168             {
1169                 int64_t i_used;
1170                 int64_t i_rest;
1171
1172                 i_rest = ctts->i_sample_count[i_index] -
1173                     i_index_sample_used;
1174
1175                 i_used = __MIN( i_rest, i_sample_count );
1176
1177                 i_index_sample_used += i_used;
1178                 i_sample_count -= i_used;
1179
1180                 ck->p_sample_count_pts[i] = i_used;
1181                 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1182
1183                 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1184                 {
1185                     i_index++;
1186                     i_index_sample_used = 0;
1187                 }
1188             }
1189         }
1190     }
1191
1192     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1193              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1194              i_last_dts / p_demux_track->i_timescale );
1195
1196     return VLC_SUCCESS;
1197 }
1198
1199 /*
1200  * TrackCreateES:
1201  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1202  */
1203 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1204                           unsigned int i_chunk, es_out_id_t **pp_es )
1205 {
1206     MP4_Box_t   *p_sample;
1207     MP4_Box_t   *p_esds;
1208     MP4_Box_t   *p_box;
1209
1210     *pp_es = NULL;
1211
1212     if( !p_track->chunk[i_chunk].i_sample_description_index )
1213     {
1214         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1215                   p_track->i_track_ID );
1216         return VLC_EGENERIC;
1217     }
1218
1219     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1220                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1221
1222     if( !p_sample ||
1223         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1224     {
1225         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1226                   p_track->i_track_ID );
1227         return VLC_EGENERIC;
1228     }
1229
1230     p_track->p_sample = p_sample;
1231
1232     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1233     {
1234         MP4_Box_data_sample_soun_t *p_soun;
1235
1236         p_soun = p_sample->data.p_sample_soun;
1237
1238         if( p_soun->i_qt_version == 0 )
1239         {
1240             switch( p_sample->i_type )
1241             {
1242                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1243                     p_soun->i_qt_version = 1;
1244                     p_soun->i_sample_per_packet = 64;
1245                     p_soun->i_bytes_per_packet  = 34;
1246                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1247                     p_soun->i_bytes_per_sample  = 2;
1248                     break;
1249                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1250                     p_soun->i_qt_version = 1;
1251                     p_soun->i_sample_per_packet = 6;
1252                     p_soun->i_bytes_per_packet  = 2;
1253                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1254                     p_soun->i_bytes_per_sample  = 2;
1255                     break;
1256                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1257                     p_soun->i_qt_version = 1;
1258                     p_soun->i_sample_per_packet = 12;
1259                     p_soun->i_bytes_per_packet  = 2;
1260                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1261                     p_soun->i_bytes_per_sample  = 2;
1262                     break;
1263                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1264                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1265                     p_soun->i_samplesize = 8;
1266                     break;
1267                 default:
1268                     break;
1269             }
1270
1271         }
1272         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1273         {
1274             p_soun->i_qt_version = 0;
1275         }
1276     }
1277
1278
1279     /* It's a little ugly but .. there are special cases */
1280     switch( p_sample->i_type )
1281     {
1282         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1283         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1284             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1285             break;
1286
1287         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1288             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1289
1290             /* Buggy files workaround */
1291             if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1292                 p_sample->data.p_sample_soun->i_sampleratehi) )
1293             {
1294                 MP4_Box_data_sample_soun_t *p_soun =
1295                     p_sample->data.p_sample_soun;
1296
1297                 msg_Warn( p_demux, "i_timescale ("I64Fu") != i_sampleratehi "
1298                           "(%u), making both equal (report any problem).",
1299                           p_track->i_timescale, p_soun->i_sampleratehi );
1300
1301                 if( p_soun->i_sampleratehi )
1302                     p_track->i_timescale = p_soun->i_sampleratehi;
1303                 else
1304                     p_soun->i_sampleratehi = p_track->i_timescale;
1305             }
1306             break;
1307
1308         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1309             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1310             break;
1311
1312         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1313         case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1314             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1315             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1316             /* FIXME UTF-8 doesn't work here ? */
1317             p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1318             break;
1319
1320         default:
1321             p_track->fmt.i_codec = p_sample->i_type;
1322             break;
1323     }
1324
1325     /* now see if esds is present and if so create a data packet
1326         with decoder_specific_info  */
1327 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1328     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1329           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1330         ( p_esds->data.p_esds )&&
1331         ( p_decconfig ) )
1332     {
1333         /* First update information based on i_objectTypeIndication */
1334         switch( p_decconfig->i_objectTypeIndication )
1335         {
1336             case( 0x20 ): /* MPEG4 VIDEO */
1337                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1338                 break;
1339             case( 0x40):
1340                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1341                 break;
1342             case( 0x60):
1343             case( 0x61):
1344             case( 0x62):
1345             case( 0x63):
1346             case( 0x64):
1347             case( 0x65): /* MPEG2 video */
1348                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1349                 break;
1350             /* Theses are MPEG2-AAC */
1351             case( 0x66): /* main profile */
1352             case( 0x67): /* Low complexity profile */
1353             case( 0x68): /* Scaleable Sampling rate profile */
1354                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1355                 break;
1356             /* true MPEG 2 audio */
1357             case( 0x69):
1358                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1359                 break;
1360             case( 0x6a): /* MPEG1 video */
1361                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1362                 break;
1363             case( 0x6b): /* MPEG1 audio */
1364                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1365                 break;
1366             case( 0x6c ): /* jpeg */
1367                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1368                 break;
1369
1370             /* Private ID */
1371             case( 0xe0 ): /* NeroDigital: dvd subs */
1372                 if( p_track->fmt.i_cat == SPU_ES )
1373                 {
1374                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1375                     if( p_track->i_width > 0 )
1376                         p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1377                     if( p_track->i_height > 0 )
1378                         p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1379                     break;
1380                 }
1381             /* Fallback */
1382             default:
1383                 /* Unknown entry, but don't touch i_fourcc */
1384                 msg_Warn( p_demux,
1385                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1386                           p_decconfig->i_objectTypeIndication,
1387                           p_track->i_track_ID );
1388                 break;
1389         }
1390         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1391         if( p_track->fmt.i_extra > 0 )
1392         {
1393             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1394             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1395                     p_track->fmt.i_extra );
1396         }
1397     }
1398     else
1399     {
1400         switch( p_sample->i_type )
1401         {
1402             /* qt decoder, send the complete chunk */
1403             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1404             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1405             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1406             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1407             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1408                 p_track->fmt.i_extra =
1409                     p_sample->data.p_sample_vide->i_qt_image_description;
1410                 if( p_track->fmt.i_extra > 0 )
1411                 {
1412                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1413                     memcpy( p_track->fmt.p_extra,
1414                             p_sample->data.p_sample_vide->p_qt_image_description,
1415                             p_track->fmt.i_extra);
1416                 }
1417                 break;
1418             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1419             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1420             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1421             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1422             case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1423                 p_track->fmt.i_extra =
1424                     p_sample->data.p_sample_soun->i_qt_description;
1425                 if( p_track->fmt.i_extra > 0 )
1426                 {
1427                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1428                     memcpy( p_track->fmt.p_extra,
1429                             p_sample->data.p_sample_soun->p_qt_description,
1430                             p_track->fmt.i_extra);
1431                 }
1432                 break;
1433
1434             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1435             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1436             {
1437                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1438
1439                 if( p_avcC )
1440                 {
1441                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1442                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1443                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1444                             p_track->fmt.i_extra );
1445                 }
1446                 else
1447                 {
1448                     msg_Err( p_demux, "missing avcC" );
1449                 }
1450                 break;
1451             }
1452
1453             default:
1454                 break;
1455         }
1456     }
1457
1458 #undef p_decconfig
1459
1460     /* some last initialisation */
1461     switch( p_track->fmt.i_cat )
1462     {
1463     case( VIDEO_ES ):
1464         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1465         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1466         p_track->fmt.video.i_bits_per_pixel =
1467             p_sample->data.p_sample_vide->i_depth;
1468
1469         /* fall on display size */
1470         if( p_track->fmt.video.i_width <= 0 )
1471             p_track->fmt.video.i_width = p_track->i_width;
1472         if( p_track->fmt.video.i_height <= 0 )
1473             p_track->fmt.video.i_height = p_track->i_height;
1474
1475         /* Find out apect ratio from display size */
1476         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1477             /* Work-around buggy muxed files */
1478             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1479             p_track->fmt.video.i_aspect =
1480                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1481
1482         /* Frame rate */
1483         p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1484         p_track->fmt.video.i_frame_rate_base = 1;
1485
1486         if( p_track->fmt.video.i_frame_rate &&
1487             (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1488             p_box->data.p_stts->i_entry_count >= 1 )
1489         {
1490             p_track->fmt.video.i_frame_rate_base =
1491                 p_box->data.p_stts->i_sample_delta[0];
1492         }
1493
1494         break;
1495
1496     case( AUDIO_ES ):
1497         p_track->fmt.audio.i_channels =
1498             p_sample->data.p_sample_soun->i_channelcount;
1499         p_track->fmt.audio.i_rate =
1500             p_sample->data.p_sample_soun->i_sampleratehi;
1501         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1502             p_sample->data.p_sample_soun->i_sampleratehi *
1503                 p_sample->data.p_sample_soun->i_samplesize;
1504         p_track->fmt.audio.i_bitspersample =
1505             p_sample->data.p_sample_soun->i_samplesize;
1506         break;
1507
1508     default:
1509         break;
1510     }
1511
1512     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1513
1514     return VLC_SUCCESS;
1515 }
1516
1517 /* given a time it return sample/chunk
1518  * it also update elst field of the track
1519  */
1520 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1521                                    int64_t i_start, uint32_t *pi_chunk,
1522                                    uint32_t *pi_sample )
1523 {
1524     demux_sys_t *p_sys = p_demux->p_sys;
1525     MP4_Box_t   *p_stss;
1526     uint64_t     i_dts;
1527     unsigned int i_sample;
1528     unsigned int i_chunk;
1529     int          i_index;
1530
1531     /* FIXME see if it's needed to check p_track->i_chunk_count */
1532     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1533     {
1534         return( VLC_EGENERIC );
1535     }
1536
1537     /* handle elst (find the correct one) */
1538     MP4_TrackSetELST( p_demux, p_track, i_start );
1539     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1540     {
1541         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1542         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1543
1544         /* now calculate i_start for this elst */
1545         /* offset */
1546         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1547         if( i_start < 0 )
1548         {
1549             *pi_chunk = 0;
1550             *pi_sample= 0;
1551
1552             return VLC_SUCCESS;
1553         }
1554         /* to track time scale */
1555         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1556         /* add elst offset */
1557         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1558              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1559             elst->i_media_time[p_track->i_elst] > 0 )
1560         {
1561             i_start += elst->i_media_time[p_track->i_elst];
1562         }
1563
1564         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1565                  "ms (track)", p_track->i_elst,
1566                  i_mvt * 1000 / p_sys->i_timescale,
1567                  i_start * 1000 / p_track->i_timescale );
1568     }
1569     else
1570     {
1571         /* convert absolute time to in timescale unit */
1572         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1573     }
1574
1575     /* we start from sample 0/chunk 0, hope it won't take too much time */
1576     /* *** find good chunk *** */
1577     for( i_chunk = 0; ; i_chunk++ )
1578     {
1579         if( i_chunk + 1 >= p_track->i_chunk_count )
1580         {
1581             /* at the end and can't check if i_start in this chunk,
1582                it will be check while searching i_sample */
1583             i_chunk = p_track->i_chunk_count - 1;
1584             break;
1585         }
1586
1587         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1588             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1589         {
1590             break;
1591         }
1592     }
1593
1594     /* *** find sample in the chunk *** */
1595     i_sample = p_track->chunk[i_chunk].i_sample_first;
1596     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1597     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1598     {
1599         if( i_dts +
1600             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1601             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1602         {
1603             i_dts    +=
1604                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1605                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1606
1607             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1608             i_index++;
1609         }
1610         else
1611         {
1612             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1613             {
1614                 break;
1615             }
1616             i_sample += ( i_start - i_dts ) /
1617                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1618             break;
1619         }
1620     }
1621
1622     if( i_sample >= p_track->i_sample_count )
1623     {
1624         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1625                   "(seeking too far) chunk=%d sample=%d",
1626                   p_track->i_track_ID, i_chunk, i_sample );
1627         return( VLC_EGENERIC );
1628     }
1629
1630
1631     /* *** Try to find nearest sync points *** */
1632     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1633     {
1634         unsigned int i_index;
1635         msg_Dbg( p_demux,
1636                     "track[Id 0x%x] using Sync Sample Box (stss)",
1637                     p_track->i_track_ID );
1638         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1639         {
1640             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1641             {
1642                 if( i_index > 0 )
1643                 {
1644                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1645                             i_sample,
1646                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1647                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1648                     /* new i_sample is less than old so i_chunk can only decreased */
1649                     while( i_chunk > 0 &&
1650                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1651                     {
1652                         i_chunk--;
1653                     }
1654                 }
1655                 else
1656                 {
1657                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1658                             i_sample,
1659                             p_stss->data.p_stss->i_sample_number[i_index] );
1660                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1661                     /* new i_sample is more than old so i_chunk can only increased */
1662                     while( i_chunk < p_track->i_chunk_count - 1 &&
1663                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1664                              p_track->chunk[i_chunk].i_sample_count )
1665                     {
1666                         i_chunk++;
1667                     }
1668                 }
1669                 break;
1670             }
1671         }
1672     }
1673     else
1674     {
1675         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1676                  "Sample Box (stss)", p_track->i_track_ID );
1677     }
1678
1679     *pi_chunk  = i_chunk;
1680     *pi_sample = i_sample;
1681
1682     return VLC_SUCCESS;
1683 }
1684
1685 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1686                                  unsigned int i_chunk, unsigned int i_sample )
1687 {
1688     vlc_bool_t b_reselect = VLC_FALSE;
1689
1690     /* now see if actual es is ok */
1691     if( p_track->i_chunk < 0 ||
1692         p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1693         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1694             p_track->chunk[i_chunk].i_sample_description_index )
1695     {
1696         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1697                   p_track->i_track_ID );
1698
1699         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1700                         p_track->p_es, &b_reselect );
1701
1702         es_out_Del( p_demux->out, p_track->p_es );
1703
1704         p_track->p_es = NULL;
1705
1706         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1707         {
1708             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1709                      p_track->i_track_ID );
1710
1711             p_track->b_ok       = VLC_FALSE;
1712             p_track->b_selected = VLC_FALSE;
1713             return VLC_EGENERIC;
1714         }
1715     }
1716
1717     /* select again the new decoder */
1718     if( b_reselect )
1719     {
1720         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1721     }
1722
1723     p_track->i_chunk    = i_chunk;
1724     p_track->i_sample   = i_sample;
1725
1726     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1727 }
1728
1729 /****************************************************************************
1730  * MP4_TrackCreate:
1731  ****************************************************************************
1732  * Parse track information and create all needed data to run a track
1733  * If it succeed b_ok is set to 1 else to 0
1734  ****************************************************************************/
1735 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1736                              MP4_Box_t *p_box_trak )
1737 {
1738     demux_sys_t *p_sys = p_demux->p_sys;
1739
1740     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1741     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1742     MP4_Box_t *p_elst;
1743
1744     MP4_Box_t *p_mdhd;
1745     MP4_Box_t *p_udta;
1746     MP4_Box_t *p_hdlr;
1747
1748     MP4_Box_t *p_vmhd;
1749     MP4_Box_t *p_smhd;
1750
1751     MP4_Box_t *p_drms;
1752
1753     unsigned int i;
1754     char language[4];
1755
1756     /* hint track unsupported */
1757
1758     /* set default value (-> track unusable) */
1759     p_track->b_ok       = VLC_FALSE;
1760     p_track->b_enable   = VLC_FALSE;
1761     p_track->b_selected = VLC_FALSE;
1762
1763     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1764
1765     if( !p_tkhd )
1766     {
1767         return;
1768     }
1769
1770     /* do we launch this track by default ? */
1771     p_track->b_enable =
1772         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1773
1774     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1775     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1776     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1777
1778     if( p_tref )
1779     {
1780 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1781     }
1782
1783     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1784     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1785
1786     if( ( !p_mdhd )||( !p_hdlr ) )
1787     {
1788         return;
1789     }
1790
1791     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1792
1793     for( i = 0; i < 3; i++ )
1794     {
1795         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1796     }
1797     language[3] = '\0';
1798
1799     switch( p_hdlr->data.p_hdlr->i_handler_type )
1800     {
1801         case( FOURCC_soun ):
1802             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1803             {
1804                 return;
1805             }
1806             p_track->fmt.i_cat = AUDIO_ES;
1807             break;
1808
1809         case( FOURCC_vide ):
1810             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1811             {
1812                 return;
1813             }
1814             p_track->fmt.i_cat = VIDEO_ES;
1815             break;
1816
1817         case( FOURCC_text ):
1818         case( FOURCC_subp ):
1819         case( FOURCC_tx3g ):
1820             p_track->fmt.i_cat = SPU_ES;
1821             break;
1822
1823         default:
1824             return;
1825     }
1826
1827     p_track->i_elst = 0;
1828     p_track->i_elst_time = 0;
1829     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1830     {
1831         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1832         unsigned int i;
1833
1834         msg_Warn( p_demux, "elst box found" );
1835         for( i = 0; i < elst->i_entry_count; i++ )
1836         {
1837             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd
1838                      "ms) rate=%d.%d", i,
1839                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1840                      elst->i_media_time[i] >= 0 ?
1841                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
1842                      I64C(-1),
1843                      elst->i_media_rate_integer[i],
1844                      elst->i_media_rate_fraction[i] );
1845         }
1846     }
1847
1848
1849 /*  TODO
1850     add support for:
1851     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1852 */
1853     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1854         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1855     {
1856         return;
1857     }
1858
1859     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1860     p_track->b_drms = p_drms != NULL;
1861     p_track->p_drms = p_track->b_drms ?
1862         p_drms->data.p_sample_soun->p_drms : NULL;
1863
1864     /* Set language */
1865     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1866     {
1867         p_track->fmt.psz_language = strdup( language );
1868     }
1869
1870     p_udta = MP4_BoxGet( p_box_trak, "udta" );
1871     if( p_udta )
1872     {
1873         MP4_Box_t *p_0xa9xxx;
1874         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1875                  p_0xa9xxx = p_0xa9xxx->p_next )
1876         {
1877             switch( p_0xa9xxx->i_type )
1878             {
1879                 case FOURCC_0xa9nam:
1880                     p_track->fmt.psz_description =
1881                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1882                     break;
1883             }
1884         }
1885     }
1886
1887     /* Create chunk index table and sample index table */
1888     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1889         TrackCreateSamplesIndex( p_demux, p_track ) )
1890     {
1891         return; /* cannot create chunks index */
1892     }
1893
1894     p_track->i_chunk  = 0;
1895     p_track->i_sample = 0;
1896
1897     /* now create es */
1898     if( TrackCreateES( p_demux,
1899                        p_track, p_track->i_chunk,
1900                        &p_track->p_es ) )
1901     {
1902         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1903                  p_track->i_track_ID );
1904         return;
1905     }
1906
1907 #if 0
1908     {
1909         int i;
1910         for( i = 0; i < p_track->i_chunk_count; i++ )
1911         {
1912             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1913                      i, p_track->chunk[i].i_sample_count,
1914                      p_track->chunk[i].i_first_dts );
1915
1916         }
1917     }
1918 #endif
1919     p_track->b_ok = VLC_TRUE;
1920 }
1921
1922 /****************************************************************************
1923  * MP4_TrackDestroy:
1924  ****************************************************************************
1925  * Destroy a track created by MP4_TrackCreate.
1926  ****************************************************************************/
1927 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1928 {
1929     unsigned int i_chunk;
1930
1931     p_track->b_ok = VLC_FALSE;
1932     p_track->b_enable   = VLC_FALSE;
1933     p_track->b_selected = VLC_FALSE;
1934
1935     es_format_Clean( &p_track->fmt );
1936
1937     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1938     {
1939         if( p_track->chunk )
1940         {
1941            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1942            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1943
1944            FREE(p_track->chunk[i_chunk].p_sample_count_pts);
1945            FREE(p_track->chunk[i_chunk].p_sample_offset_pts );
1946         }
1947     }
1948     FREE( p_track->chunk );
1949
1950     if( !p_track->i_sample_size )
1951     {
1952         FREE( p_track->p_sample_size );
1953     }
1954 }
1955
1956 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1957                             mtime_t i_start )
1958 {
1959     if( !p_track->b_ok )
1960     {
1961         return VLC_EGENERIC;
1962     }
1963
1964     if( p_track->b_selected )
1965     {
1966         msg_Warn( p_demux, "track[Id 0x%x] already selected",
1967                   p_track->i_track_ID );
1968         return VLC_SUCCESS;
1969     }
1970
1971     return MP4_TrackSeek( p_demux, p_track, i_start );
1972 }
1973
1974 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1975 {
1976     if( !p_track->b_ok )
1977     {
1978         return;
1979     }
1980
1981     if( !p_track->b_selected )
1982     {
1983         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1984                   p_track->i_track_ID );
1985         return;
1986     }
1987     if( p_track->p_es )
1988     {
1989         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1990                         p_track->p_es, VLC_FALSE );
1991     }
1992
1993     p_track->b_selected = VLC_FALSE;
1994 }
1995
1996 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1997                           mtime_t i_start )
1998 {
1999     uint32_t i_chunk;
2000     uint32_t i_sample;
2001
2002     if( !p_track->b_ok )
2003     {
2004         return( VLC_EGENERIC );
2005     }
2006
2007     p_track->b_selected = VLC_FALSE;
2008
2009     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2010                                 &i_chunk, &i_sample ) )
2011     {
2012         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2013                   p_track->i_track_ID );
2014         return( VLC_EGENERIC );
2015     }
2016
2017     p_track->b_selected = VLC_TRUE;
2018
2019     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2020         VLC_SUCCESS )
2021     {
2022         p_track->b_selected = VLC_TRUE;
2023
2024         es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
2025                         p_track->p_es, i_start );
2026     }
2027
2028     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2029 }
2030
2031
2032 /*
2033  * 3 types: for audio
2034  *
2035  */
2036 #define QT_V0_MAX_SAMPLES 1024
2037 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2038 {
2039     int i_size;
2040     MP4_Box_data_sample_soun_t *p_soun;
2041
2042     if( p_track->i_sample_size == 0 )
2043     {
2044         /* most simple case */
2045         return p_track->p_sample_size[p_track->i_sample];
2046     }
2047     if( p_track->fmt.i_cat != AUDIO_ES )
2048     {
2049         return p_track->i_sample_size;
2050     }
2051
2052     p_soun = p_track->p_sample->data.p_sample_soun;
2053
2054     if( p_soun->i_qt_version == 1 )
2055     {
2056         i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2057             p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2058     }
2059     else if( p_track->i_sample_size > 256 )
2060     {
2061         /* We do that so we don't read too much data
2062          * (in this case we are likely dealing with compressed data) */
2063         i_size = p_track->i_sample_size;
2064     }
2065     else
2066     {
2067         /* Read a bunch of samples at once */
2068         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2069             ( p_track->i_sample -
2070               p_track->chunk[p_track->i_chunk].i_sample_first );
2071
2072         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2073         i_size = i_samples * p_track->i_sample_size;
2074     }
2075
2076     //fprintf( stderr, "size=%d\n", i_size );
2077     return i_size;
2078 }
2079
2080 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2081 {
2082     unsigned int i_sample;
2083     uint64_t i_pos;
2084
2085     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2086
2087     if( p_track->i_sample_size )
2088     {
2089         MP4_Box_data_sample_soun_t *p_soun =
2090             p_track->p_sample->data.p_sample_soun;
2091
2092         if( p_soun->i_qt_version == 0 )
2093         {
2094             i_pos += ( p_track->i_sample -
2095                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
2096                      p_track->i_sample_size;
2097         }
2098         else
2099         {
2100             /* we read chunk by chunk */
2101             i_pos += 0;
2102         }
2103     }
2104     else
2105     {
2106         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2107              i_sample < p_track->i_sample; i_sample++ )
2108         {
2109             i_pos += p_track->p_sample_size[i_sample];
2110         }
2111     }
2112
2113     return i_pos;
2114 }
2115
2116 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2117 {
2118     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2119     {
2120         MP4_Box_data_sample_soun_t *p_soun;
2121
2122         p_soun = p_track->p_sample->data.p_sample_soun;
2123
2124         if( p_soun->i_qt_version == 1 )
2125         {
2126             /* chunk by chunk */
2127             p_track->i_sample =
2128                 p_track->chunk[p_track->i_chunk].i_sample_first +
2129                 p_track->chunk[p_track->i_chunk].i_sample_count;
2130         }
2131         else if( p_track->i_sample_size > 256 )
2132         {
2133             /* We do that so we don't read too much data
2134              * (in this case we are likely dealing with compressed data) */
2135             p_track->i_sample += 1;
2136         }
2137         else
2138         {
2139             /* FIXME */
2140             p_track->i_sample += QT_V0_MAX_SAMPLES;
2141             if( p_track->i_sample >
2142                 p_track->chunk[p_track->i_chunk].i_sample_first +
2143                 p_track->chunk[p_track->i_chunk].i_sample_count )
2144             {
2145                 p_track->i_sample =
2146                     p_track->chunk[p_track->i_chunk].i_sample_first +
2147                     p_track->chunk[p_track->i_chunk].i_sample_count;
2148             }
2149         }
2150     }
2151     else
2152     {
2153         p_track->i_sample++;
2154     }
2155
2156     if( p_track->i_sample >= p_track->i_sample_count )
2157         return VLC_EGENERIC;
2158
2159     /* Have we changed chunk ? */
2160     if( p_track->i_sample >=
2161             p_track->chunk[p_track->i_chunk].i_sample_first +
2162             p_track->chunk[p_track->i_chunk].i_sample_count )
2163     {
2164         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2165                                   p_track->i_sample ) )
2166         {
2167             msg_Warn( p_demux, "track[0x%x] will be disabled "
2168                       "(cannot restart decoder)", p_track->i_track_ID );
2169             MP4_TrackUnselect( p_demux, p_track );
2170             return VLC_EGENERIC;
2171         }
2172     }
2173
2174     /* Have we changed elst */
2175     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2176     {
2177         demux_sys_t *p_sys = p_demux->p_sys;
2178         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2179         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2180                         p_sys->i_timescale / (int64_t)1000000;
2181
2182         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2183             i_mvt >= p_track->i_elst_time +
2184                      elst->i_segment_duration[p_track->i_elst] )
2185         {
2186             MP4_TrackSetELST( p_demux, p_track,
2187                               MP4_TrackGetDTS( p_demux, p_track ) );
2188         }
2189     }
2190
2191     return VLC_SUCCESS;
2192 }
2193
2194 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2195                               int64_t i_time )
2196 {
2197     demux_sys_t *p_sys = p_demux->p_sys;
2198     int         i_elst_last = tk->i_elst;
2199
2200     /* handle elst (find the correct one) */
2201     tk->i_elst      = 0;
2202     tk->i_elst_time = 0;
2203     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2204     {
2205         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2206         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2207
2208         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2209         {
2210             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2211
2212             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2213             {
2214                 break;
2215             }
2216             tk->i_elst_time += i_dur;
2217         }
2218
2219         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2220         {
2221             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2222             tk->i_elst = elst->i_entry_count - 1;
2223             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2224         }
2225
2226         if( elst->i_media_time[tk->i_elst] < 0 )
2227         {
2228             /* track offset */
2229             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2230         }
2231     }
2232     if( i_elst_last != tk->i_elst )
2233     {
2234         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2235     }
2236 }