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
  27 #include <vlc/vlc.h>
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>                                      /* malloc(), free() */
  31
  32 #include <vlc/input.h>
  33 #include <vlc_playlist.h>
  34 #include <vlc_md5.h>
  35 #include "charset.h"
  36 #include "iso_lang.h"
  37 #include "vlc_meta.h"
  38
  39 #include "libmp4.h"
  40 #include "drms.h"
  41
  42 #ifdef UNDER_CE
  43 #define uint64_t int64_t
  44 #endif
  45
  46 /*****************************************************************************
  47  * Module descriptor
  48  *****************************************************************************/
  49 static int  Open ( vlc_object_t * );
  50 static void Close( vlc_object_t * );
  51
  52 vlc_module_begin();
  53     set_category( CAT_INPUT );
  54     set_subcategory( SUBCAT_INPUT_DEMUX );
  55     set_description( _("MP4 stream demuxer") );
  56     set_capability( "demux2", 242 );
  57     set_callbacks( Open, Close );
  58 vlc_module_end();
  59
  60 /*****************************************************************************
  61  * Local prototypes
  62  *****************************************************************************/
  63 static int   Demux   ( demux_t * );
  64 static int   DemuxRef( demux_t *p_demux ){ return 0;}
  65 static int   Seek    ( demux_t *, mtime_t );
  66 static int   Control ( demux_t *, int, va_list );
  67
  68 /* Contain all information about a chunk */
  69 typedef struct
  70 {
  71     uint64_t     i_offset; /* absolute position of this chunk in the file */
  72     uint32_t     i_sample_description_index; /* index for SampleEntry to use */
  73     uint32_t     i_sample_count; /* how many samples in this chunk */
  74     uint32_t     i_sample_first; /* index of the first sample in this chunk */
  75
  76     /* now provide way to calculate pts, dts, and offset without to
  77         much memory and with fast acces */
  78
  79     /* with this we can calculate dts/pts without waste memory */
  80     uint64_t     i_first_dts;
  81     uint32_t     *p_sample_count_dts;
  82     uint32_t     *p_sample_delta_dts;   /* dts delta */
  83
  84     uint32_t     *p_sample_count_pts;
  85     int32_t      *p_sample_offset_pts;  /* pts-dts */
  86
  87     /* TODO if needed add pts
  88         but quickly *add* support for edts and seeking */
  89
  90 } mp4_chunk_t;
  91
  92  /* Contain all needed information for read all track with vlc */
  93 typedef struct
  94 {
  95     int i_track_ID;     /* this should be unique */
  96
  97     int b_ok;           /* The track is usable */
  98     int b_enable;       /* is the trak enable by default */
  99     vlc_bool_t b_selected;     /* is the trak being played */
 100
 101     es_format_t fmt;
 102     es_out_id_t *p_es;
 103
 104     /* display size only ! */
 105     int i_width;
 106     int i_height;
 107
 108     /* more internal data */
 109     uint64_t        i_timescale;    /* time scale for this track only */
 110
 111     /* elst */
 112     int             i_elst;         /* current elst */
 113     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 114     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 115
 116     /* give the next sample to read, i_chunk is to find quickly where
 117       the sample is located */
 118     uint32_t         i_sample;       /* next sample to read */
 119     uint32_t         i_chunk;        /* chunk where next sample is stored */
 120     /* total count of chunk and sample */
 121     uint32_t         i_chunk_count;
 122     uint32_t         i_sample_count;
 123
 124     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 125
 126     /* sample size, p_sample_size defined only if i_sample_size == 0
 127         else i_sample_size is size for all sample */
 128     uint32_t         i_sample_size;
 129     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 130                                     too much time to do sumations each time*/
 131
 132     MP4_Box_t *p_stbl;  /* will contain all timing information */
 133     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 134     MP4_Box_t *p_sample;/* point on actual sdsd */
 135
 136     vlc_bool_t b_drms;
 137     void      *p_drms;
 138
 139 } mp4_track_t;
 140
 141
 142 struct demux_sys_t
 143 {
 144     MP4_Box_t    *p_root;      /* container for the whole file */
 145
 146     mtime_t      i_pcr;
 147
 148     uint64_t     i_time;        /* time position of the presentation
 149                                  * in movie timescale */
 150     uint64_t     i_timescale;   /* movie time scale */
 151     uint64_t     i_duration;    /* movie duration */
 152     unsigned int i_tracks;      /* number of tracks */
 153     mp4_track_t *track;    /* array of track */
 154 };
 155
 156 /*****************************************************************************
 157  * Declaration of local function
 158  *****************************************************************************/
 159 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 160 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 161
 162 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 163 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 164
 165 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 166
 167 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 168 static int      MP4_TrackSampleSize( mp4_track_t * );
 169 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 170 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 171
 172 /* Return time in s of a track */
 173 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 174 {
 175 #define chunk p_track->chunk[p_track->i_chunk]
 176
 177     unsigned int i_index = 0;
 178     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 179     int64_t i_dts = chunk.i_first_dts;
 180
 181     while( i_sample > 0 )
 182     {
 183         if( i_sample > chunk.p_sample_count_dts[i_index] )
 184         {
 185             i_dts += chunk.p_sample_count_dts[i_index] *
 186                 chunk.p_sample_delta_dts[i_index];
 187             i_sample -= chunk.p_sample_count_dts[i_index];
 188             i_index++;
 189         }
 190         else
 191         {
 192             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 193             i_sample = 0;
 194             break;
 195         }
 196     }
 197
 198 #undef chunk
 199
 200     /* now handle elst */
 201     if( p_track->p_elst )
 202     {
 203         demux_sys_t         *p_sys = p_demux->p_sys;
 204         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 205
 206         /* convert to offset */
 207         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 208               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 209             elst->i_media_time[p_track->i_elst] > 0 )
 210         {
 211             i_dts -= elst->i_media_time[p_track->i_elst];
 212         }
 213
 214         /* add i_elst_time */
 215         i_dts += p_track->i_elst_time * p_track->i_timescale /
 216             p_sys->i_timescale;
 217
 218         if( i_dts < 0 ) i_dts = 0;
 219     }
 220
 221     return I64C(1000000) * i_dts / p_track->i_timescale;
 222 }
 223
 224 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
 225 {
 226     mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
 227     unsigned int i_index = 0;
 228     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 229
 230     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 231         return -1;
 232
 233     for( i_index = 0;; i_index++ )
 234     {
 235         if( i_sample < ck->p_sample_count_pts[i_index] )
 236             return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
 237                    (int64_t)p_track->i_timescale;
 238
 239         i_sample -= ck->p_sample_count_pts[i_index];
 240     }
 241 }
 242
 243 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 244 {
 245     return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
 246 }
 247
 248 /* Function to lookup the currently playing item */
 249 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
 250                      playlist_item_t **pp_item );
 251
 252 /*****************************************************************************
 253  * Open: check file and initializes MP4 structures
 254  *****************************************************************************/
 255 static int Open( vlc_object_t * p_this )
 256 {
 257     demux_t  *p_demux = (demux_t *)p_this;
 258     demux_sys_t     *p_sys;
 259
 260     uint8_t         *p_peek;
 261
 262     MP4_Box_t       *p_ftyp;
 263     MP4_Box_t       *p_rmra;
 264     MP4_Box_t       *p_mvhd;
 265     MP4_Box_t       *p_trak;
 266
 267     unsigned int    i;
 268     vlc_bool_t      b_seekable;
 269
 270     /* A little test to see if it could be a mp4 */
 271     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
 272
 273     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 274     {
 275         case FOURCC_ftyp:
 276         case FOURCC_moov:
 277         case FOURCC_foov:
 278         case FOURCC_moof:
 279         case FOURCC_mdat:
 280         case FOURCC_udta:
 281         case FOURCC_free:
 282         case FOURCC_skip:
 283         case FOURCC_wide:
 284         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 285             break;
 286          default:
 287             return VLC_EGENERIC;
 288     }
 289
 290     /* I need to seek */
 291     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 292     if( !b_seekable )
 293     {
 294         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 295         return VLC_EGENERIC;
 296     }
 297
 298     /*Set exported functions */
 299     p_demux->pf_demux = Demux;
 300     p_demux->pf_control = Control;
 301
 302     /* create our structure that will contains all data */
 303     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 304     memset( p_sys, 0, sizeof( demux_sys_t ) );
 305
 306     /* Now load all boxes ( except raw data ) */
 307     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 308     {
 309         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 310         goto error;
 311     }
 312
 313     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 314
 315     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 316     {
 317         switch( p_ftyp->data.p_ftyp->i_major_brand )
 318         {
 319             case( FOURCC_isom ):
 320                 msg_Dbg( p_demux,
 321                          "ISO Media file (isom) version %d.",
 322                          p_ftyp->data.p_ftyp->i_minor_version );
 323                 break;
 324             default:
 325                 msg_Dbg( p_demux,
 326                          "unrecognized major file specification (%4.4s).",
 327                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 328                 break;
 329         }
 330     }
 331     else
 332     {
 333         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 334     }
 335
 336     /* the file need to have one moov box */
 337     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 338     {
 339         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 340
 341         if( !p_foov )
 342         {
 343             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 344             goto error;
 345         }
 346         /* we have a free box as a moov, rename it */
 347         p_foov->i_type = FOURCC_moov;
 348     }
 349
 350     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 351     {
 352         playlist_t *p_playlist;
 353         playlist_item_t *p_current, *p_item_in_category;
 354         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 355         int        i;
 356         vlc_bool_t b_play = VLC_FALSE;
 357
 358         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 359
 360         p_playlist =
 361             (playlist_t *)vlc_object_find( p_demux,
 362                                            VLC_OBJECT_PLAYLIST,
 363                                            FIND_ANYWHERE );
 364         if( p_playlist )
 365         {
 366             b_play = FindItem( p_demux, p_playlist, &p_current );
 367             p_item_in_category = playlist_ItemToNode( p_playlist, p_current );
 368             p_current->p_input->i_type = ITEM_TYPE_PLAYLIST;
 369
 370             for( i = 0; i < i_count; i++ )
 371             {
 372                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 373                 char      *psz_ref;
 374                 uint32_t  i_ref_type;
 375
 376                 if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
 377                 {
 378                     continue;
 379                 }
 380                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 381
 382                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 383                          psz_ref, (char*)&i_ref_type );
 384
 385                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 386                 {
 387                     if( strstr( psz_ref, "qt5gateQT" ) )
 388                     {
 389                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 390                         continue;
 391                     }
 392                     if( !strncmp( psz_ref, "http://", 7 ) ||
 393                         !strncmp( psz_ref, "rtsp://", 7 ) )
 394                     {
 395                         ;
 396                     }
 397                     else
 398                     {
 399                         char *psz_absolute;
 400                         char *psz_path = strdup( p_demux->psz_path );
 401                         char *end = strrchr( psz_path, '/' );
 402                         if( end ) end[1] = '\0';
 403                         else *psz_path = '\0';
 404
 405                         asprintf( &psz_absolute, "%s://%s%s",
 406                                       p_demux->psz_access, psz_path, psz_ref );
 407
 408                         psz_ref = psz_absolute;
 409                         free( psz_path );
 410                     }
 411                     if( p_current )
 412                     {
 413                         input_item_t *p_input;
 414                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 415                         p_input = input_ItemNewExt( p_playlist, psz_ref, NULL,
 416                                             0, NULL, -1 );
 417                         input_ItemCopyOptions( p_current->p_input, p_input );
 418                         playlist_BothAddInput( p_playlist, p_input,
 419                                                p_item_in_category,
 420                                                PLAYLIST_APPEND, PLAYLIST_END );
 421                     }
 422                 }
 423                 else
 424                 {
 425                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 426                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 427                 }
 428                 if( psz_ref ) free( psz_ref );
 429             }
 430             if( b_play && p_playlist->status.p_item &&
 431                   p_playlist->status.p_item->i_children > 0)
 432             {
 433                 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 434                                   p_playlist->status.p_item, NULL );
 435             }
 436             vlc_object_release( p_playlist );
 437         }
 438         else
 439         {
 440             msg_Err( p_demux, "can't find playlist" );
 441         }
 442     }
 443
 444     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 445     {
 446         if( !p_rmra )
 447         {
 448             msg_Err( p_demux, "cannot find /moov/mvhd" );
 449             goto error;
 450         }
 451         else
 452         {
 453             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 454             p_demux->pf_demux = DemuxRef;
 455             return VLC_SUCCESS;
 456         }
 457     }
 458     else
 459     {
 460         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 461         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 462     }
 463
 464     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 465     {
 466         msg_Err( p_demux, "cannot find any /moov/trak" );
 467         goto error;
 468     }
 469     msg_Dbg( p_demux, "find %d track%c",
 470                         p_sys->i_tracks,
 471                         p_sys->i_tracks ? 's':' ' );
 472
 473     /* allocate memory */
 474     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 475     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 476
 477     /* now process each track and extract all usefull information */
 478     for( i = 0; i < p_sys->i_tracks; i++ )
 479     {
 480         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 481         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 482
 483         if( p_sys->track[i].b_ok )
 484         {
 485             char *psz_cat;
 486             switch( p_sys->track[i].fmt.i_cat )
 487             {
 488                 case( VIDEO_ES ):
 489                     psz_cat = "video";
 490                     break;
 491                 case( AUDIO_ES ):
 492                     psz_cat = "audio";
 493                     break;
 494                 case( SPU_ES ):
 495                     psz_cat = "subtitle";
 496                     break;
 497
 498                 default:
 499                     psz_cat = "unknown";
 500                     break;
 501             }
 502
 503             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 504                      p_sys->track[i].i_track_ID, psz_cat,
 505                      p_sys->track[i].b_enable ? "enable":"disable",
 506                      p_sys->track[i].fmt.psz_language ?
 507                      p_sys->track[i].fmt.psz_language : "undef" );
 508         }
 509         else
 510         {
 511             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 512                      p_sys->track[i].i_track_ID );
 513         }
 514
 515     }
 516     return VLC_SUCCESS;
 517
 518 error:
 519     if( p_sys->p_root )
 520     {
 521         MP4_BoxFree( p_demux->s, p_sys->p_root );
 522     }
 523     free( p_sys );
 524     return VLC_EGENERIC;
 525 }
 526
 527 /*****************************************************************************
 528  * Demux: read packet and send them to decoders
 529  *****************************************************************************
 530  * TODO check for newly selected track (ie audio upt to now )
 531  *****************************************************************************/
 532 static int Demux( demux_t *p_demux )
 533 {
 534     demux_sys_t *p_sys = p_demux->p_sys;
 535     unsigned int i_track;
 536
 537
 538     unsigned int i_track_selected;
 539
 540     /* check for newly selected/unselected track */
 541     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 542          i_track++ )
 543     {
 544         mp4_track_t *tk = &p_sys->track[i_track];
 545         vlc_bool_t b;
 546
 547         if( !tk->b_ok ||
 548             ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
 549         {
 550             continue;
 551         }
 552
 553         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 554
 555         if( tk->b_selected && !b )
 556         {
 557             MP4_TrackUnselect( p_demux, tk );
 558         }
 559         else if( !tk->b_selected && b)
 560         {
 561             MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 562         }
 563
 564         if( tk->b_selected )
 565         {
 566             i_track_selected++;
 567         }
 568     }
 569
 570     if( i_track_selected <= 0 )
 571     {
 572         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 573         if( p_sys->i_timescale > 0 )
 574         {
 575             int64_t i_length = (mtime_t)1000000 *
 576                                (mtime_t)p_sys->i_duration /
 577                                (mtime_t)p_sys->i_timescale;
 578             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 579                 return 0;
 580             return 1;
 581         }
 582
 583         msg_Warn( p_demux, "no track selected, exiting..." );
 584         return 0;
 585     }
 586
 587     /* first wait for the good time to read a packet */
 588     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
 589
 590     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 591
 592     /* we will read 100ms for each stream so ...*/
 593     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 594
 595     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 596     {
 597         mp4_track_t *tk = &p_sys->track[i_track];
 598
 599         if( !tk->b_ok || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
 600         {
 601             continue;
 602         }
 603
 604         while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 605         {
 606 #if 0
 607             msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
 608                      MP4_TrackGetDTS( p_demux, tk ),
 609                      MP4_GetMoviePTS( p_sys ) );
 610 #endif
 611
 612             if( MP4_TrackSampleSize( tk ) > 0 )
 613             {
 614                 block_t *p_block;
 615                 int64_t i_delta;
 616
 617                 /* go,go go ! */
 618                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 619                 {
 620                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 621                               tk->i_track_ID );
 622                     MP4_TrackUnselect( p_demux, tk );
 623                     break;
 624                 }
 625
 626                 /* now read pes */
 627                 if( !(p_block =
 628                          stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
 629                 {
 630                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 631                               tk->i_track_ID );
 632                     MP4_TrackUnselect( p_demux, tk );
 633                     break;
 634                 }
 635
 636                 if( tk->b_drms && tk->p_drms )
 637                 {
 638                     drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
 639                                   p_block->i_buffer );
 640                 }
 641                 else if( tk->fmt.i_cat == SPU_ES )
 642                 {
 643                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
 644                         p_block->i_buffer >= 2 )
 645                     {
 646                         uint16_t i_size = GetWBE( p_block->p_buffer );
 647
 648                         if( i_size + 2 <= p_block->i_buffer )
 649                         {
 650                             char *p;
 651                             /* remove the length field, and append a '\0' */
 652                             memmove( &p_block->p_buffer[0],
 653                                      &p_block->p_buffer[2], i_size );
 654                             p_block->p_buffer[i_size] = '\0';
 655                             p_block->i_buffer = i_size + 1;
 656
 657                             /* convert \r -> \n */
 658                             while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
 659                             {
 660                                 *p = '\n';
 661                             }
 662                         }
 663                         else
 664                         {
 665                             /* Invalid */
 666                             p_block->i_buffer = 0;
 667                         }
 668                     }
 669                 }
 670                 /* dts */
 671                 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
 672                 /* pts */
 673                 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
 674                 if( i_delta != -1 )
 675                     p_block->i_pts = p_block->i_dts + i_delta;
 676                 else if( tk->fmt.i_cat != VIDEO_ES )
 677                     p_block->i_pts = p_block->i_dts;
 678                 else
 679                     p_block->i_pts = 0;
 680
 681                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 682                     es_out_Send( p_demux->out, tk->p_es, p_block );
 683             }
 684
 685             /* Next sample */
 686             if( MP4_TrackNextSample( p_demux, tk ) )
 687             {
 688                 break;
 689             }
 690         }
 691     }
 692
 693     return 1;
 694 }
 695 /*****************************************************************************
 696  * Seek: Got to i_date
 697 ******************************************************************************/
 698 static int Seek( demux_t *p_demux, mtime_t i_date )
 699 {
 700     demux_sys_t *p_sys = p_demux->p_sys;
 701     unsigned int i_track;
 702
 703     /* First update update global time */
 704     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 705     p_sys->i_pcr  = i_date;
 706
 707     /* Now for each stream try to go to this time */
 708     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 709     {
 710         mp4_track_t *tk = &p_sys->track[i_track];
 711         MP4_TrackSeek( p_demux, tk, i_date );
 712     }
 713     return VLC_SUCCESS;
 714 }
 715
 716 /*****************************************************************************
 717  * Control:
 718  *****************************************************************************/
 719 static int Control( demux_t *p_demux, int i_query, va_list args )
 720 {
 721     demux_sys_t *p_sys = p_demux->p_sys;
 722
 723     double f, *pf;
 724     int64_t i64, *pi64;
 725
 726     switch( i_query )
 727     {
 728         case DEMUX_GET_POSITION:
 729             pf = (double*)va_arg( args, double * );
 730             if( p_sys->i_duration > 0 )
 731             {
 732                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 733             }
 734             else
 735             {
 736                 *pf = 0.0;
 737             }
 738             return VLC_SUCCESS;
 739
 740         case DEMUX_SET_POSITION:
 741             f = (double)va_arg( args, double );
 742             if( p_sys->i_timescale > 0 )
 743             {
 744                 i64 = (int64_t)( f * (double)1000000 *
 745                                  (double)p_sys->i_duration /
 746                                  (double)p_sys->i_timescale );
 747                 return Seek( p_demux, i64 );
 748             }
 749             else return VLC_SUCCESS;
 750
 751         case DEMUX_GET_TIME:
 752             pi64 = (int64_t*)va_arg( args, int64_t * );
 753             if( p_sys->i_timescale > 0 )
 754             {
 755                 *pi64 = (mtime_t)1000000 *
 756                         (mtime_t)p_sys->i_time /
 757                         (mtime_t)p_sys->i_timescale;
 758             }
 759             else *pi64 = 0;
 760             return VLC_SUCCESS;
 761
 762         case DEMUX_SET_TIME:
 763             i64 = (int64_t)va_arg( args, int64_t );
 764             return Seek( p_demux, i64 );
 765
 766         case DEMUX_GET_LENGTH:
 767             pi64 = (int64_t*)va_arg( args, int64_t * );
 768             if( p_sys->i_timescale > 0 )
 769             {
 770                 *pi64 = (mtime_t)1000000 *
 771                         (mtime_t)p_sys->i_duration /
 772                         (mtime_t)p_sys->i_timescale;
 773             }
 774             else *pi64 = 0;
 775             return VLC_SUCCESS;
 776
 777         case DEMUX_GET_FPS:
 778             msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
 779             return VLC_EGENERIC;
 780
 781         case DEMUX_GET_META:
 782         {
 783             vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
 784             MP4_Box_t  *p_udta   = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 785             MP4_Box_t  *p_0xa9xxx;
 786             if( p_udta == NULL )
 787             {
 788                 return VLC_EGENERIC;
 789             }
 790             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 791                  p_0xa9xxx = p_0xa9xxx->p_next )
 792             {
 793                 char *psz_utf;
 794                 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
 795                     continue;
 796                 psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
 797                 if( psz_utf == NULL )
 798                     continue;
 799                 /* FIXME FIXME: should convert from whatever the character
 800                  * encoding of MP4 meta data is to UTF-8. */
 801                 EnsureUTF8( psz_utf );
 802
 803                 switch( p_0xa9xxx->i_type )
 804                 {
 805                 case FOURCC_0xa9nam: /* Full name */
 806                     vlc_meta_SetArtist( p_meta, psz_utf );
 807                     break;
 808                 case FOURCC_0xa9aut:
 809                     vlc_meta_SetArtist( p_meta, psz_utf );
 810                     break;
 811                 case FOURCC_0xa9ART:
 812                     vlc_meta_SetArtist( p_meta, psz_utf );
 813                     break;
 814                 case FOURCC_0xa9cpy:
 815                     vlc_meta_SetCopyright( p_meta, psz_utf );
 816                     break;
 817                 case FOURCC_0xa9day: /* Creation Date */
 818                     vlc_meta_SetDate( p_meta, psz_utf );
 819                     break;
 820                 case FOURCC_0xa9des: /* Description */
 821                     vlc_meta_SetDescription( p_meta, psz_utf );
 822                     break;
 823                 case FOURCC_0xa9gen: /* Genre */
 824                     vlc_meta_SetGenre( p_meta, psz_utf );
 825                     break;
 826
 827                 case FOURCC_0xa9swr:
 828                 case FOURCC_0xa9inf: /* Information */
 829                 case FOURCC_0xa9alb: /* Album */
 830                 case FOURCC_0xa9dir: /* Director */
 831                 case FOURCC_0xa9dis: /* Disclaimer */
 832                 case FOURCC_0xa9enc: /* Encoded By */
 833                 case FOURCC_0xa9trk: /* Track */
 834                 case FOURCC_0xa9cmt: /* Commment */
 835                 case FOURCC_0xa9url: /* URL */
 836                 case FOURCC_0xa9req: /* Requirements */
 837                 case FOURCC_0xa9fmt: /* Original Format */
 838                 case FOURCC_0xa9dsa: /* Display Source As */
 839                 case FOURCC_0xa9hst: /* Host Computer */
 840                 case FOURCC_0xa9prd: /* Producer */
 841                 case FOURCC_0xa9prf: /* Performers */
 842                 case FOURCC_0xa9ope: /* Original Performer */
 843                 case FOURCC_0xa9src: /* Providers Source Content */
 844                 case FOURCC_0xa9wrt: /* Writer */
 845                 case FOURCC_0xa9com: /* Composer */
 846                 case FOURCC_WLOC:    /* Window Location */
 847                     /* TODO one day, but they aren't really meaningfull */
 848                     break;
 849
 850                 default:
 851                     break;
 852                 }
 853                 free( psz_utf );
 854             }
 855             return VLC_SUCCESS;
 856         }
 857
 858         case DEMUX_GET_TITLE_INFO:
 859         case DEMUX_SET_NEXT_DEMUX_TIME:
 860         case DEMUX_SET_GROUP:
 861             return VLC_EGENERIC;
 862
 863         default:
 864             msg_Warn( p_demux, "control query %u unimplemented", i_query );
 865             return VLC_EGENERIC;
 866     }
 867 }
 868
 869 /*****************************************************************************
 870  * Close: frees unused data
 871  *****************************************************************************/
 872 static void Close ( vlc_object_t * p_this )
 873 {
 874     unsigned int i_track;
 875     demux_t *  p_demux = (demux_t *)p_this;
 876     demux_sys_t *p_sys = p_demux->p_sys;
 877
 878     msg_Dbg( p_demux, "freeing all memory" );
 879
 880     MP4_BoxFree( p_demux->s, p_sys->p_root );
 881     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 882     {
 883         MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
 884     }
 885     FREENULL( p_sys->track );
 886
 887     free( p_sys );
 888 }
 889
 890
 891
 892 /****************************************************************************
 893  * Local functions, specific to vlc
 894  ****************************************************************************/
 895
 896 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 897 static int TrackCreateChunksIndex( demux_t *p_demux,
 898                                    mp4_track_t *p_demux_track )
 899 {
 900     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 901     MP4_Box_t *p_stsc;
 902
 903     unsigned int i_chunk;
 904     unsigned int i_index, i_last;
 905
 906     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 907           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 908         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 909     {
 910         return( VLC_EGENERIC );
 911     }
 912
 913     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 914     if( !p_demux_track->i_chunk_count )
 915     {
 916         msg_Warn( p_demux, "no chunk defined" );
 917         return( VLC_EGENERIC );
 918     }
 919     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 920                                    sizeof( mp4_chunk_t ) );
 921
 922     /* first we read chunk offset */
 923     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 924     {
 925         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
 926
 927         ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
 928
 929         ck->i_first_dts = 0;
 930         ck->p_sample_count_dts = NULL;
 931         ck->p_sample_delta_dts = NULL;
 932         ck->p_sample_count_pts = NULL;
 933         ck->p_sample_offset_pts = NULL;
 934     }
 935
 936     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 937         to be used for the sample XXX begin to 1
 938         We construct it begining at the end */
 939     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 940     i_index = p_stsc->data.p_stsc->i_entry_count;
 941     if( !i_index )
 942     {
 943         msg_Warn( p_demux, "cannot read chunk table or table empty" );
 944         return( VLC_EGENERIC );
 945     }
 946
 947     while( i_index-- )
 948     {
 949         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 950              i_chunk < i_last; i_chunk++ )
 951         {
 952             p_demux_track->chunk[i_chunk].i_sample_description_index =
 953                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 954             p_demux_track->chunk[i_chunk].i_sample_count =
 955                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 956         }
 957         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 958     }
 959
 960     p_demux_track->chunk[0].i_sample_first = 0;
 961     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 962     {
 963         p_demux_track->chunk[i_chunk].i_sample_first =
 964             p_demux_track->chunk[i_chunk-1].i_sample_first +
 965                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 966     }
 967
 968     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
 969              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
 970
 971     return VLC_SUCCESS;
 972 }
 973
 974 static int TrackCreateSamplesIndex( demux_t *p_demux,
 975                                     mp4_track_t *p_demux_track )
 976 {
 977     MP4_Box_t *p_box;
 978     MP4_Box_data_stsz_t *stsz;
 979     MP4_Box_data_stts_t *stts;
 980     /* TODO use also stss and stsh table for seeking */
 981     /* FIXME use edit table */
 982     int64_t i_sample;
 983     int64_t i_chunk;
 984
 985     int64_t i_index;
 986     int64_t i_index_sample_used;
 987
 988     int64_t i_last_dts;
 989
 990     /* Find stsz
 991      *  Gives the sample size for each samples. There is also a stz2 table
 992      *  (compressed form) that we need to implement TODO */
 993     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
 994     if( !p_box )
 995     {
 996         /* FIXME and stz2 */
 997         msg_Warn( p_demux, "cannot find STSZ box" );
 998         return VLC_EGENERIC;
 999     }
1000     stsz = p_box->data.p_stsz;
1001
1002     /* Find stts
1003      *  Gives mapping between sample and decoding time
1004      */
1005     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1006     if( !p_box )
1007     {
1008         msg_Warn( p_demux, "cannot find STTS box" );
1009         return VLC_EGENERIC;
1010     }
1011     stts = p_box->data.p_stts;
1012
1013     /* Use stsz table to create a sample number -> sample size table */
1014     p_demux_track->i_sample_count = stsz->i_sample_count;
1015     if( stsz->i_sample_size )
1016     {
1017         /* 1: all sample have the same size, so no need to construct a table */
1018         p_demux_track->i_sample_size = stsz->i_sample_size;
1019         p_demux_track->p_sample_size = NULL;
1020     }
1021     else
1022     {
1023         /* 2: each sample can have a different size */
1024         p_demux_track->i_sample_size = 0;
1025         p_demux_track->p_sample_size =
1026             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1027
1028         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1029         {
1030             p_demux_track->p_sample_size[i_sample] =
1031                     stsz->i_entry_size[i_sample];
1032         }
1033     }
1034
1035     /* Use stts table to create a sample number -> dts table.
1036      * XXX: if we don't want to waste too much memory, we can't expand
1037      *  the box! so each chunk will contain an "extract" of this table
1038      *  for fast research (problem with raw stream where a sample is sometime
1039      *  just channels*bits_per_sample/8 */
1040
1041     i_last_dts = 0;
1042     i_index = 0; i_index_sample_used = 0;
1043     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1044     {
1045         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1046         int64_t i_entry, i_sample_count, i;
1047
1048         /* save last dts */
1049         ck->i_first_dts = i_last_dts;
1050
1051         /* count how many entries are needed for this chunk
1052          * for p_sample_delta_dts and p_sample_count_dts */
1053         i_sample_count = ck->i_sample_count;
1054
1055         i_entry = 0;
1056         while( i_sample_count > 0 )
1057         {
1058             i_sample_count -= stts->i_sample_count[i_index+i_entry];
1059             /* don't count already used sample in this entry */
1060             if( i_entry == 0 )
1061                 i_sample_count += i_index_sample_used;
1062
1063             i_entry++;
1064         }
1065
1066         /* allocate them */
1067         ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1068         ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1069
1070         /* now copy */
1071         i_sample_count = ck->i_sample_count;
1072         for( i = 0; i < i_entry; i++ )
1073         {
1074             int64_t i_used;
1075             int64_t i_rest;
1076
1077             i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1078
1079             i_used = __MIN( i_rest, i_sample_count );
1080
1081             i_index_sample_used += i_used;
1082             i_sample_count -= i_used;
1083
1084             ck->p_sample_count_dts[i] = i_used;
1085             ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1086
1087             i_last_dts += i_used * ck->p_sample_delta_dts[i];
1088
1089             if( i_index_sample_used >= stts->i_sample_count[i_index] )
1090             {
1091                 i_index++;
1092                 i_index_sample_used = 0;
1093             }
1094         }
1095     }
1096
1097     /* Find ctts
1098      *  Gives the delta between decoding time (dts) and composition table (pts)
1099      */
1100     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1101     if( p_box )
1102     {
1103         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1104
1105         msg_Warn( p_demux, "CTTS table" );
1106
1107         /* Create pts-dts table per chunk */
1108         i_index = 0; i_index_sample_used = 0;
1109         for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1110         {
1111             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1112             int64_t i_entry, i_sample_count, i;
1113
1114             /* count how many entries are needed for this chunk
1115              * for p_sample_delta_dts and p_sample_count_dts */
1116             i_sample_count = ck->i_sample_count;
1117
1118             i_entry = 0;
1119             while( i_sample_count > 0 )
1120             {
1121                 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1122
1123                 /* don't count already used sample in this entry */
1124                 if( i_entry == 0 )
1125                     i_sample_count += i_index_sample_used;
1126
1127                 i_entry++;
1128             }
1129
1130             /* allocate them */
1131             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1132             ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1133
1134             /* now copy */
1135             i_sample_count = ck->i_sample_count;
1136             for( i = 0; i < i_entry; i++ )
1137             {
1138                 int64_t i_used;
1139                 int64_t i_rest;
1140
1141                 i_rest = ctts->i_sample_count[i_index] -
1142                     i_index_sample_used;
1143
1144                 i_used = __MIN( i_rest, i_sample_count );
1145
1146                 i_index_sample_used += i_used;
1147                 i_sample_count -= i_used;
1148
1149                 ck->p_sample_count_pts[i] = i_used;
1150                 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1151
1152                 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1153                 {
1154                     i_index++;
1155                     i_index_sample_used = 0;
1156                 }
1157             }
1158         }
1159     }
1160
1161     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1162              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1163              i_last_dts / p_demux_track->i_timescale );
1164
1165     return VLC_SUCCESS;
1166 }
1167
1168 /*
1169  * TrackCreateES:
1170  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1171  */
1172 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1173                           unsigned int i_chunk, es_out_id_t **pp_es )
1174 {
1175     MP4_Box_t   *p_sample;
1176     MP4_Box_t   *p_esds;
1177     MP4_Box_t   *p_box;
1178
1179     *pp_es = NULL;
1180
1181     if( !p_track->chunk[i_chunk].i_sample_description_index )
1182     {
1183         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1184                   p_track->i_track_ID );
1185         return VLC_EGENERIC;
1186     }
1187
1188     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1189                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1190
1191     if( !p_sample ||
1192         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1193     {
1194         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1195                   p_track->i_track_ID );
1196         return VLC_EGENERIC;
1197     }
1198
1199     p_track->p_sample = p_sample;
1200
1201     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1202     {
1203         MP4_Box_data_sample_soun_t *p_soun;
1204
1205         p_soun = p_sample->data.p_sample_soun;
1206
1207         if( p_soun->i_qt_version == 0 )
1208         {
1209             switch( p_sample->i_type )
1210             {
1211                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1212                     p_soun->i_qt_version = 1;
1213                     p_soun->i_sample_per_packet = 64;
1214                     p_soun->i_bytes_per_packet  = 34;
1215                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1216                     p_soun->i_bytes_per_sample  = 2;
1217                     break;
1218                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1219                     p_soun->i_qt_version = 1;
1220                     p_soun->i_sample_per_packet = 6;
1221                     p_soun->i_bytes_per_packet  = 2;
1222                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1223                     p_soun->i_bytes_per_sample  = 2;
1224                     break;
1225                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1226                     p_soun->i_qt_version = 1;
1227                     p_soun->i_sample_per_packet = 12;
1228                     p_soun->i_bytes_per_packet  = 2;
1229                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1230                     p_soun->i_bytes_per_sample  = 2;
1231                     break;
1232                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1233                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1234                     p_soun->i_samplesize = 8;
1235                     break;
1236                 default:
1237                     break;
1238             }
1239
1240         }
1241         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1242         {
1243             p_soun->i_qt_version = 0;
1244         }
1245     }
1246
1247
1248     /* It's a little ugly but .. there are special cases */
1249     switch( p_sample->i_type )
1250     {
1251         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1252         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1253             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1254             break;
1255
1256         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1257             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1258
1259             /* Buggy files workaround */
1260             if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1261                 p_sample->data.p_sample_soun->i_sampleratehi) )
1262             {
1263                 MP4_Box_data_sample_soun_t *p_soun =
1264                     p_sample->data.p_sample_soun;
1265
1266                 msg_Warn( p_demux, "i_timescale ("I64Fu") != i_sampleratehi "
1267                           "(%u), making both equal (report any problem).",
1268                           p_track->i_timescale, p_soun->i_sampleratehi );
1269
1270                 if( p_soun->i_sampleratehi )
1271                     p_track->i_timescale = p_soun->i_sampleratehi;
1272                 else
1273                     p_soun->i_sampleratehi = p_track->i_timescale;
1274             }
1275             break;
1276
1277         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1278             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1279             break;
1280
1281         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1282         case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1283             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1284             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1285             /* FIXME UTF-8 doesn't work here ? */
1286             p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1287             break;
1288
1289         default:
1290             p_track->fmt.i_codec = p_sample->i_type;
1291             break;
1292     }
1293
1294     /* now see if esds is present and if so create a data packet
1295         with decoder_specific_info  */
1296 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1297     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1298           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1299         ( p_esds->data.p_esds )&&
1300         ( p_decconfig ) )
1301     {
1302         /* First update information based on i_objectTypeIndication */
1303         switch( p_decconfig->i_objectTypeIndication )
1304         {
1305             case( 0x20 ): /* MPEG4 VIDEO */
1306                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1307                 break;
1308             case( 0x40):
1309                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1310                 break;
1311             case( 0x60):
1312             case( 0x61):
1313             case( 0x62):
1314             case( 0x63):
1315             case( 0x64):
1316             case( 0x65): /* MPEG2 video */
1317                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1318                 break;
1319             /* Theses are MPEG2-AAC */
1320             case( 0x66): /* main profile */
1321             case( 0x67): /* Low complexity profile */
1322             case( 0x68): /* Scaleable Sampling rate profile */
1323                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1324                 break;
1325             /* true MPEG 2 audio */
1326             case( 0x69):
1327                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1328                 break;
1329             case( 0x6a): /* MPEG1 video */
1330                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1331                 break;
1332             case( 0x6b): /* MPEG1 audio */
1333                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1334                 break;
1335             case( 0x6c ): /* jpeg */
1336                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1337                 break;
1338
1339             /* Private ID */
1340             case( 0xe0 ): /* NeroDigital: dvd subs */
1341                 if( p_track->fmt.i_cat == SPU_ES )
1342                 {
1343                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1344                     if( p_track->i_width > 0 )
1345                         p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1346                     if( p_track->i_height > 0 )
1347                         p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1348                     break;
1349                 }
1350             /* Fallback */
1351             default:
1352                 /* Unknown entry, but don't touch i_fourcc */
1353                 msg_Warn( p_demux,
1354                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1355                           p_decconfig->i_objectTypeIndication,
1356                           p_track->i_track_ID );
1357                 break;
1358         }
1359         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1360         if( p_track->fmt.i_extra > 0 )
1361         {
1362             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1363             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1364                     p_track->fmt.i_extra );
1365         }
1366     }
1367     else
1368     {
1369         switch( p_sample->i_type )
1370         {
1371             /* qt decoder, send the complete chunk */
1372             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1373             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1374             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1375             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1376             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1377                 p_track->fmt.i_extra =
1378                     p_sample->data.p_sample_vide->i_qt_image_description;
1379                 if( p_track->fmt.i_extra > 0 )
1380                 {
1381                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1382                     memcpy( p_track->fmt.p_extra,
1383                             p_sample->data.p_sample_vide->p_qt_image_description,
1384                             p_track->fmt.i_extra);
1385                 }
1386                 break;
1387             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1388             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1389             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1390             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1391             case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1392                 p_track->fmt.i_extra =
1393                     p_sample->data.p_sample_soun->i_qt_description;
1394                 if( p_track->fmt.i_extra > 0 )
1395                 {
1396                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1397                     memcpy( p_track->fmt.p_extra,
1398                             p_sample->data.p_sample_soun->p_qt_description,
1399                             p_track->fmt.i_extra);
1400                 }
1401                 break;
1402
1403             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1404             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1405             {
1406                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1407
1408                 if( p_avcC )
1409                 {
1410                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1411                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1412                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1413                             p_track->fmt.i_extra );
1414                 }
1415                 else
1416                 {
1417                     msg_Err( p_demux, "missing avcC" );
1418                 }
1419                 break;
1420             }
1421
1422             default:
1423                 break;
1424         }
1425     }
1426
1427 #undef p_decconfig
1428
1429     /* some last initialisation */
1430     switch( p_track->fmt.i_cat )
1431     {
1432     case( VIDEO_ES ):
1433         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1434         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1435         p_track->fmt.video.i_bits_per_pixel =
1436             p_sample->data.p_sample_vide->i_depth;
1437
1438         /* fall on display size */
1439         if( p_track->fmt.video.i_width <= 0 )
1440             p_track->fmt.video.i_width = p_track->i_width;
1441         if( p_track->fmt.video.i_height <= 0 )
1442             p_track->fmt.video.i_height = p_track->i_height;
1443
1444         /* Find out apect ratio from display size */
1445         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1446             /* Work-around buggy muxed files */
1447             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1448             p_track->fmt.video.i_aspect =
1449                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1450
1451         /* Support for cropping (eg. in H263 files) */
1452         p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1453         p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1454
1455         /* Frame rate */
1456         p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1457         p_track->fmt.video.i_frame_rate_base = 1;
1458
1459         if( p_track->fmt.video.i_frame_rate &&
1460             (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1461             p_box->data.p_stts->i_entry_count >= 1 )
1462         {
1463             p_track->fmt.video.i_frame_rate_base =
1464                 p_box->data.p_stts->i_sample_delta[0];
1465         }
1466
1467         break;
1468
1469     case( AUDIO_ES ):
1470         p_track->fmt.audio.i_channels =
1471             p_sample->data.p_sample_soun->i_channelcount;
1472         p_track->fmt.audio.i_rate =
1473             p_sample->data.p_sample_soun->i_sampleratehi;
1474         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1475             p_sample->data.p_sample_soun->i_sampleratehi *
1476                 p_sample->data.p_sample_soun->i_samplesize;
1477         p_track->fmt.audio.i_bitspersample =
1478             p_sample->data.p_sample_soun->i_samplesize;
1479         break;
1480
1481     default:
1482         break;
1483     }
1484
1485     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1486
1487     return VLC_SUCCESS;
1488 }
1489
1490 /* given a time it return sample/chunk
1491  * it also update elst field of the track
1492  */
1493 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1494                                    int64_t i_start, uint32_t *pi_chunk,
1495                                    uint32_t *pi_sample )
1496 {
1497     demux_sys_t *p_sys = p_demux->p_sys;
1498     MP4_Box_t   *p_stss;
1499     uint64_t     i_dts;
1500     unsigned int i_sample;
1501     unsigned int i_chunk;
1502     int          i_index;
1503
1504     /* FIXME see if it's needed to check p_track->i_chunk_count */
1505     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1506     {
1507         return( VLC_EGENERIC );
1508     }
1509
1510     /* handle elst (find the correct one) */
1511     MP4_TrackSetELST( p_demux, p_track, i_start );
1512     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1513     {
1514         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1515         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1516
1517         /* now calculate i_start for this elst */
1518         /* offset */
1519         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1520         if( i_start < 0 )
1521         {
1522             *pi_chunk = 0;
1523             *pi_sample= 0;
1524
1525             return VLC_SUCCESS;
1526         }
1527         /* to track time scale */
1528         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1529         /* add elst offset */
1530         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1531              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1532             elst->i_media_time[p_track->i_elst] > 0 )
1533         {
1534             i_start += elst->i_media_time[p_track->i_elst];
1535         }
1536
1537         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1538                  "ms (track)", p_track->i_elst,
1539                  i_mvt * 1000 / p_sys->i_timescale,
1540                  i_start * 1000 / p_track->i_timescale );
1541     }
1542     else
1543     {
1544         /* convert absolute time to in timescale unit */
1545         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1546     }
1547
1548     /* we start from sample 0/chunk 0, hope it won't take too much time */
1549     /* *** find good chunk *** */
1550     for( i_chunk = 0; ; i_chunk++ )
1551     {
1552         if( i_chunk + 1 >= p_track->i_chunk_count )
1553         {
1554             /* at the end and can't check if i_start in this chunk,
1555                it will be check while searching i_sample */
1556             i_chunk = p_track->i_chunk_count - 1;
1557             break;
1558         }
1559
1560         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1561             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1562         {
1563             break;
1564         }
1565     }
1566
1567     /* *** find sample in the chunk *** */
1568     i_sample = p_track->chunk[i_chunk].i_sample_first;
1569     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1570     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1571     {
1572         if( i_dts +
1573             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1574             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1575         {
1576             i_dts    +=
1577                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1578                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1579
1580             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1581             i_index++;
1582         }
1583         else
1584         {
1585             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1586             {
1587                 break;
1588             }
1589             i_sample += ( i_start - i_dts ) /
1590                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1591             break;
1592         }
1593     }
1594
1595     if( i_sample >= p_track->i_sample_count )
1596     {
1597         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1598                   "(seeking too far) chunk=%d sample=%d",
1599                   p_track->i_track_ID, i_chunk, i_sample );
1600         return( VLC_EGENERIC );
1601     }
1602
1603
1604     /* *** Try to find nearest sync points *** */
1605     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1606     {
1607         unsigned int i_index;
1608         msg_Dbg( p_demux,
1609                     "track[Id 0x%x] using Sync Sample Box (stss)",
1610                     p_track->i_track_ID );
1611         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1612         {
1613             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1614             {
1615                 if( i_index > 0 )
1616                 {
1617                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1618                             i_sample,
1619                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1620                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1621                     /* new i_sample is less than old so i_chunk can only decreased */
1622                     while( i_chunk > 0 &&
1623                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1624                     {
1625                         i_chunk--;
1626                     }
1627                 }
1628                 else
1629                 {
1630                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1631                             i_sample,
1632                             p_stss->data.p_stss->i_sample_number[i_index] );
1633                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1634                     /* new i_sample is more than old so i_chunk can only increased */
1635                     while( i_chunk < p_track->i_chunk_count - 1 &&
1636                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1637                              p_track->chunk[i_chunk].i_sample_count )
1638                     {
1639                         i_chunk++;
1640                     }
1641                 }
1642                 break;
1643             }
1644         }
1645     }
1646     else
1647     {
1648         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1649                  "Sample Box (stss)", p_track->i_track_ID );
1650     }
1651
1652     *pi_chunk  = i_chunk;
1653     *pi_sample = i_sample;
1654
1655     return VLC_SUCCESS;
1656 }
1657
1658 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1659                                  unsigned int i_chunk, unsigned int i_sample )
1660 {
1661     vlc_bool_t b_reselect = VLC_FALSE;
1662
1663     /* now see if actual es is ok */
1664     if( p_track->i_chunk < 0 ||
1665         p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1666         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1667             p_track->chunk[i_chunk].i_sample_description_index )
1668     {
1669         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1670                   p_track->i_track_ID );
1671
1672         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1673                         p_track->p_es, &b_reselect );
1674
1675         es_out_Del( p_demux->out, p_track->p_es );
1676
1677         p_track->p_es = NULL;
1678
1679         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1680         {
1681             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1682                      p_track->i_track_ID );
1683
1684             p_track->b_ok       = VLC_FALSE;
1685             p_track->b_selected = VLC_FALSE;
1686             return VLC_EGENERIC;
1687         }
1688     }
1689
1690     /* select again the new decoder */
1691     if( b_reselect )
1692     {
1693         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1694     }
1695
1696     p_track->i_chunk    = i_chunk;
1697     p_track->i_sample   = i_sample;
1698
1699     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1700 }
1701
1702 /****************************************************************************
1703  * MP4_TrackCreate:
1704  ****************************************************************************
1705  * Parse track information and create all needed data to run a track
1706  * If it succeed b_ok is set to 1 else to 0
1707  ****************************************************************************/
1708 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1709                              MP4_Box_t *p_box_trak )
1710 {
1711     demux_sys_t *p_sys = p_demux->p_sys;
1712
1713     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1714     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1715     MP4_Box_t *p_elst;
1716
1717     MP4_Box_t *p_mdhd;
1718     MP4_Box_t *p_udta;
1719     MP4_Box_t *p_hdlr;
1720
1721     MP4_Box_t *p_vmhd;
1722     MP4_Box_t *p_smhd;
1723
1724     MP4_Box_t *p_drms;
1725
1726     unsigned int i;
1727     char language[4];
1728
1729     /* hint track unsupported */
1730
1731     /* set default value (-> track unusable) */
1732     p_track->b_ok       = VLC_FALSE;
1733     p_track->b_enable   = VLC_FALSE;
1734     p_track->b_selected = VLC_FALSE;
1735
1736     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1737
1738     if( !p_tkhd )
1739     {
1740         return;
1741     }
1742
1743     /* do we launch this track by default ? */
1744     p_track->b_enable =
1745         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1746
1747     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1748     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1749     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1750
1751     if( p_tref )
1752     {
1753 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1754     }
1755
1756     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1757     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1758
1759     if( ( !p_mdhd )||( !p_hdlr ) )
1760     {
1761         return;
1762     }
1763
1764     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1765
1766     for( i = 0; i < 3; i++ )
1767     {
1768         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1769     }
1770     language[3] = '\0';
1771
1772     switch( p_hdlr->data.p_hdlr->i_handler_type )
1773     {
1774         case( FOURCC_soun ):
1775             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1776             {
1777                 return;
1778             }
1779             p_track->fmt.i_cat = AUDIO_ES;
1780             break;
1781
1782         case( FOURCC_vide ):
1783             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1784             {
1785                 return;
1786             }
1787             p_track->fmt.i_cat = VIDEO_ES;
1788             break;
1789
1790         case( FOURCC_text ):
1791         case( FOURCC_subp ):
1792         case( FOURCC_tx3g ):
1793             p_track->fmt.i_cat = SPU_ES;
1794             break;
1795
1796         default:
1797             return;
1798     }
1799
1800     p_track->i_elst = 0;
1801     p_track->i_elst_time = 0;
1802     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1803     {
1804         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1805         unsigned int i;
1806
1807         msg_Warn( p_demux, "elst box found" );
1808         for( i = 0; i < elst->i_entry_count; i++ )
1809         {
1810             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd
1811                      "ms) rate=%d.%d", i,
1812                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1813                      elst->i_media_time[i] >= 0 ?
1814                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
1815                      I64C(-1),
1816                      elst->i_media_rate_integer[i],
1817                      elst->i_media_rate_fraction[i] );
1818         }
1819     }
1820
1821
1822 /*  TODO
1823     add support for:
1824     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1825 */
1826     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1827         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1828     {
1829         return;
1830     }
1831
1832     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1833     p_track->b_drms = p_drms != NULL;
1834     p_track->p_drms = p_track->b_drms ?
1835         p_drms->data.p_sample_soun->p_drms : NULL;
1836
1837     /* Set language */
1838     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1839     {
1840         p_track->fmt.psz_language = strdup( language );
1841     }
1842
1843     p_udta = MP4_BoxGet( p_box_trak, "udta" );
1844     if( p_udta )
1845     {
1846         MP4_Box_t *p_0xa9xxx;
1847         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1848                  p_0xa9xxx = p_0xa9xxx->p_next )
1849         {
1850             switch( p_0xa9xxx->i_type )
1851             {
1852                 case FOURCC_0xa9nam:
1853                     p_track->fmt.psz_description =
1854                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1855                     break;
1856             }
1857         }
1858     }
1859
1860     /* Create chunk index table and sample index table */
1861     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1862         TrackCreateSamplesIndex( p_demux, p_track ) )
1863     {
1864         return; /* cannot create chunks index */
1865     }
1866
1867     p_track->i_chunk  = 0;
1868     p_track->i_sample = 0;
1869
1870     /* now create es */
1871     if( TrackCreateES( p_demux,
1872                        p_track, p_track->i_chunk,
1873                        &p_track->p_es ) )
1874     {
1875         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1876                  p_track->i_track_ID );
1877         return;
1878     }
1879
1880 #if 0
1881     {
1882         int i;
1883         for( i = 0; i < p_track->i_chunk_count; i++ )
1884         {
1885             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1886                      i, p_track->chunk[i].i_sample_count,
1887                      p_track->chunk[i].i_first_dts );
1888
1889         }
1890     }
1891 #endif
1892     p_track->b_ok = VLC_TRUE;
1893 }
1894
1895 /****************************************************************************
1896  * MP4_TrackDestroy:
1897  ****************************************************************************
1898  * Destroy a track created by MP4_TrackCreate.
1899  ****************************************************************************/
1900 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1901 {
1902     unsigned int i_chunk;
1903
1904     p_track->b_ok = VLC_FALSE;
1905     p_track->b_enable   = VLC_FALSE;
1906     p_track->b_selected = VLC_FALSE;
1907
1908     es_format_Clean( &p_track->fmt );
1909
1910     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1911     {
1912         if( p_track->chunk )
1913         {
1914            FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
1915            FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
1916
1917            FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
1918            FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
1919         }
1920     }
1921     FREENULL( p_track->chunk );
1922
1923     if( !p_track->i_sample_size )
1924     {
1925         FREENULL( p_track->p_sample_size );
1926     }
1927 }
1928
1929 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1930                             mtime_t i_start )
1931 {
1932     if( !p_track->b_ok )
1933     {
1934         return VLC_EGENERIC;
1935     }
1936
1937     if( p_track->b_selected )
1938     {
1939         msg_Warn( p_demux, "track[Id 0x%x] already selected",
1940                   p_track->i_track_ID );
1941         return VLC_SUCCESS;
1942     }
1943
1944     return MP4_TrackSeek( p_demux, p_track, i_start );
1945 }
1946
1947 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1948 {
1949     if( !p_track->b_ok )
1950     {
1951         return;
1952     }
1953
1954     if( !p_track->b_selected )
1955     {
1956         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1957                   p_track->i_track_ID );
1958         return;
1959     }
1960     if( p_track->p_es )
1961     {
1962         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1963                         p_track->p_es, VLC_FALSE );
1964     }
1965
1966     p_track->b_selected = VLC_FALSE;
1967 }
1968
1969 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1970                           mtime_t i_start )
1971 {
1972     uint32_t i_chunk;
1973     uint32_t i_sample;
1974
1975     if( !p_track->b_ok )
1976     {
1977         return( VLC_EGENERIC );
1978     }
1979
1980     p_track->b_selected = VLC_FALSE;
1981
1982     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1983                                 &i_chunk, &i_sample ) )
1984     {
1985         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1986                   p_track->i_track_ID );
1987         return( VLC_EGENERIC );
1988     }
1989
1990     p_track->b_selected = VLC_TRUE;
1991
1992     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
1993         VLC_SUCCESS )
1994     {
1995         p_track->b_selected = VLC_TRUE;
1996
1997         es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
1998                         p_track->p_es, i_start );
1999     }
2000
2001     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2002 }
2003
2004
2005 /*
2006  * 3 types: for audio
2007  *
2008  */
2009 #define QT_V0_MAX_SAMPLES 1024
2010 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2011 {
2012     int i_size;
2013     MP4_Box_data_sample_soun_t *p_soun;
2014
2015     if( p_track->i_sample_size == 0 )
2016     {
2017         /* most simple case */
2018         return p_track->p_sample_size[p_track->i_sample];
2019     }
2020     if( p_track->fmt.i_cat != AUDIO_ES )
2021     {
2022         return p_track->i_sample_size;
2023     }
2024
2025     p_soun = p_track->p_sample->data.p_sample_soun;
2026
2027     if( p_soun->i_qt_version == 1 )
2028     {
2029         i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2030             p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2031     }
2032     else if( p_track->i_sample_size > 256 )
2033     {
2034         /* We do that so we don't read too much data
2035          * (in this case we are likely dealing with compressed data) */
2036         i_size = p_track->i_sample_size;
2037     }
2038     else
2039     {
2040         /* Read a bunch of samples at once */
2041         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2042             ( p_track->i_sample -
2043               p_track->chunk[p_track->i_chunk].i_sample_first );
2044
2045         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2046         i_size = i_samples * p_track->i_sample_size;
2047     }
2048
2049     //fprintf( stderr, "size=%d\n", i_size );
2050     return i_size;
2051 }
2052
2053 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2054 {
2055     unsigned int i_sample;
2056     uint64_t i_pos;
2057
2058     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2059
2060     if( p_track->i_sample_size )
2061     {
2062         MP4_Box_data_sample_soun_t *p_soun =
2063             p_track->p_sample->data.p_sample_soun;
2064
2065         if( p_soun->i_qt_version == 0 )
2066         {
2067             i_pos += ( p_track->i_sample -
2068                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
2069                      p_track->i_sample_size;
2070         }
2071         else
2072         {
2073             /* we read chunk by chunk */
2074             i_pos += 0;
2075         }
2076     }
2077     else
2078     {
2079         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2080              i_sample < p_track->i_sample; i_sample++ )
2081         {
2082             i_pos += p_track->p_sample_size[i_sample];
2083         }
2084     }
2085
2086     return i_pos;
2087 }
2088
2089 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2090 {
2091     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2092     {
2093         MP4_Box_data_sample_soun_t *p_soun;
2094
2095         p_soun = p_track->p_sample->data.p_sample_soun;
2096
2097         if( p_soun->i_qt_version == 1 )
2098         {
2099             /* chunk by chunk */
2100             p_track->i_sample =
2101                 p_track->chunk[p_track->i_chunk].i_sample_first +
2102                 p_track->chunk[p_track->i_chunk].i_sample_count;
2103         }
2104         else if( p_track->i_sample_size > 256 )
2105         {
2106             /* We do that so we don't read too much data
2107              * (in this case we are likely dealing with compressed data) */
2108             p_track->i_sample += 1;
2109         }
2110         else
2111         {
2112             /* FIXME */
2113             p_track->i_sample += QT_V0_MAX_SAMPLES;
2114             if( p_track->i_sample >
2115                 p_track->chunk[p_track->i_chunk].i_sample_first +
2116                 p_track->chunk[p_track->i_chunk].i_sample_count )
2117             {
2118                 p_track->i_sample =
2119                     p_track->chunk[p_track->i_chunk].i_sample_first +
2120                     p_track->chunk[p_track->i_chunk].i_sample_count;
2121             }
2122         }
2123     }
2124     else
2125     {
2126         p_track->i_sample++;
2127     }
2128
2129     if( p_track->i_sample >= p_track->i_sample_count )
2130         return VLC_EGENERIC;
2131
2132     /* Have we changed chunk ? */
2133     if( p_track->i_sample >=
2134             p_track->chunk[p_track->i_chunk].i_sample_first +
2135             p_track->chunk[p_track->i_chunk].i_sample_count )
2136     {
2137         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2138                                   p_track->i_sample ) )
2139         {
2140             msg_Warn( p_demux, "track[0x%x] will be disabled "
2141                       "(cannot restart decoder)", p_track->i_track_ID );
2142             MP4_TrackUnselect( p_demux, p_track );
2143             return VLC_EGENERIC;
2144         }
2145     }
2146
2147     /* Have we changed elst */
2148     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2149     {
2150         demux_sys_t *p_sys = p_demux->p_sys;
2151         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2152         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2153                         p_sys->i_timescale / (int64_t)1000000;
2154
2155         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2156             i_mvt >= p_track->i_elst_time +
2157                      elst->i_segment_duration[p_track->i_elst] )
2158         {
2159             MP4_TrackSetELST( p_demux, p_track,
2160                               MP4_TrackGetDTS( p_demux, p_track ) );
2161         }
2162     }
2163
2164     return VLC_SUCCESS;
2165 }
2166
2167 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2168                               int64_t i_time )
2169 {
2170     demux_sys_t *p_sys = p_demux->p_sys;
2171     int         i_elst_last = tk->i_elst;
2172
2173     /* handle elst (find the correct one) */
2174     tk->i_elst      = 0;
2175     tk->i_elst_time = 0;
2176     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2177     {
2178         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2179         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2180
2181         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2182         {
2183             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2184
2185             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2186             {
2187                 break;
2188             }
2189             tk->i_elst_time += i_dur;
2190         }
2191
2192         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2193         {
2194             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2195             tk->i_elst = elst->i_entry_count - 1;
2196             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2197         }
2198
2199         if( elst->i_media_time[tk->i_elst] < 0 )
2200         {
2201             /* track offset */
2202             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2203         }
2204     }
2205     if( i_elst_last != tk->i_elst )
2206     {
2207         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2208     }
2209 }
2210
2211 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
2212                      playlist_item_t **pp_item )
2213 {
2214      vlc_bool_t b_play = var_CreateGetBool( p_demux, "playlist-autostart" );
2215
2216      if( b_play && p_playlist->status.p_item &&
2217              p_playlist->status.p_item->p_input ==
2218                 ((input_thread_t *)p_demux->p_parent)->input.p_item )
2219      {
2220          msg_Dbg( p_playlist, "starting playlist playback" );
2221          *pp_item = p_playlist->status.p_item;
2222          b_play = VLC_TRUE;
2223      }
2224      else
2225      {
2226          input_item_t *p_current = ( (input_thread_t*)p_demux->p_parent)->
2227                                                         input.p_item;
2228          *pp_item = playlist_LockItemGetByInput( p_playlist, p_current );
2229          if( !*pp_item )
2230          {
2231              msg_Dbg( p_playlist, "unable to find item in playlist");
2232          }
2233          msg_Dbg( p_playlist, "not starting playlist playback");
2234          b_play = VLC_FALSE;
2235      }
2236      return b_play;
2237 }
2238
2239