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