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

   1 /*****************************************************************************
   2  * mp4.c : MP4 file input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 VideoLAN
   5  * $Id$
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #include <stdlib.h>                                      /* malloc(), free() */
  27
  28 #include <vlc/vlc.h>
  29 #include <vlc/input.h>
  30 #include <vlc_playlist.h>
  31 #include "iso_lang.h"
  32 #include "vlc_meta.h"
  33
  34 #include "libmp4.h"
  35 #include "drms.h"
  36
  37 #ifdef UNDER_CE
  38 #define uint64_t int64_t
  39 #endif
  40
  41 /*****************************************************************************
  42  * Module descriptor
  43  *****************************************************************************/
  44 static int  Open ( vlc_object_t * );
  45 static void Close( vlc_object_t * );
  46
  47 vlc_module_begin();
  48     set_category( CAT_INPUT );
  49     set_subcategory( SUBCAT_INPUT_DEMUX );
  50     set_description( _("MP4 stream demuxer") );
  51     set_capability( "demux2", 242 );
  52     set_callbacks( Open, Close );
  53 vlc_module_end();
  54
  55 /*****************************************************************************
  56  * Local prototypes
  57  *****************************************************************************/
  58 static int   Demux   ( demux_t * );
  59 static int   DemuxRef( demux_t *p_demux ){ return 0;}
  60 static int   Seek    ( demux_t *, mtime_t );
  61 static int   Control ( demux_t *, int, va_list );
  62
  63 /* Contain all information about a chunk */
  64 typedef struct
  65 {
  66     uint64_t     i_offset; /* absolute position of this chunk in the file */
  67     uint32_t     i_sample_description_index; /* index for SampleEntry to use */
  68     uint32_t     i_sample_count; /* how many samples in this chunk */
  69     uint32_t     i_sample_first; /* index of the first sample in this chunk */
  70
  71     /* now provide way to calculate pts, dts, and offset without to
  72         much memory and with fast acces */
  73
  74     /* with this we can calculate dts/pts without waste memory */
  75     uint64_t     i_first_dts;
  76     uint32_t     *p_sample_count_dts;
  77     uint32_t     *p_sample_delta_dts;   /* dts delta */
  78
  79     uint32_t     *p_sample_count_pts;
  80     uint32_t     *p_sample_offset_pts;  /* pts-dts */
  81
  82     /* TODO if needed add pts
  83         but quickly *add* support for edts and seeking */
  84
  85 } mp4_chunk_t;
  86
  87  /* Contain all needed information for read all track with vlc */
  88 typedef struct
  89 {
  90     int i_track_ID;     /* this should be unique */
  91
  92     int b_ok;           /* The track is usable */
  93     int b_enable;       /* is the trak enable by default */
  94     vlc_bool_t b_selected;     /* is the trak being played */
  95
  96     es_format_t fmt;
  97     es_out_id_t *p_es;
  98
  99     /* display size only ! */
 100     int i_width;
 101     int i_height;
 102
 103     /* more internal data */
 104     uint64_t        i_timescale;    /* time scale for this track only */
 105
 106     /* elst */
 107     int             i_elst;         /* current elst */
 108     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 109     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 110
 111     /* give the next sample to read, i_chunk is to find quickly where
 112       the sample is located */
 113     uint32_t         i_sample;       /* next sample to read */
 114     uint32_t         i_chunk;        /* chunk where next sample is stored */
 115     /* total count of chunk and sample */
 116     uint32_t         i_chunk_count;
 117     uint32_t         i_sample_count;
 118
 119     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 120
 121     /* sample size, p_sample_size defined only if i_sample_size == 0
 122         else i_sample_size is size for all sample */
 123     uint32_t         i_sample_size;
 124     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 125                                     too much time to do sumations each time*/
 126
 127     MP4_Box_t *p_stbl;  /* will contain all timing information */
 128     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 129     MP4_Box_t *p_sample;/* point on actual sdsd */
 130
 131     vlc_bool_t b_drms;
 132     void      *p_drms;
 133
 134 } mp4_track_t;
 135
 136
 137 struct demux_sys_t
 138 {
 139     MP4_Box_t    *p_root;      /* container for the whole file */
 140
 141     mtime_t      i_pcr;
 142
 143     uint64_t     i_time;        /* time position of the presentation
 144                                  * in movie timescale */
 145     uint64_t     i_timescale;   /* movie time scale */
 146     uint64_t     i_duration;    /* movie duration */
 147     unsigned int i_tracks;      /* number of tracks */
 148     mp4_track_t *track;    /* array of track */
 149 };
 150
 151 /*****************************************************************************
 152  * Declaration of local function
 153  *****************************************************************************/
 154 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 155 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 156
 157 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 158 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 159
 160 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 161
 162 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 163 static int      MP4_TrackSampleSize( mp4_track_t * );
 164 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 165 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 166
 167 /* Return time in µs of a track */
 168 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 169 {
 170 #define chunk p_track->chunk[p_track->i_chunk]
 171
 172     unsigned int i_index = 0;
 173     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 174     int64_t i_dts = chunk.i_first_dts;
 175
 176     while( i_sample > 0 )
 177     {
 178         if( i_sample > chunk.p_sample_count_dts[i_index] )
 179         {
 180             i_dts += chunk.p_sample_count_dts[i_index] *
 181                 chunk.p_sample_delta_dts[i_index];
 182             i_sample -= chunk.p_sample_count_dts[i_index];
 183             i_index++;
 184         }
 185         else
 186         {
 187             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 188             i_sample = 0;
 189             break;
 190         }
 191     }
 192
 193 #undef chunk
 194
 195     /* now handle elst */
 196     if( p_track->p_elst )
 197     {
 198         demux_sys_t         *p_sys = p_demux->p_sys;
 199         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 200
 201         /* convert to offset */
 202         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 203               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 204             elst->i_media_time[p_track->i_elst] > 0 )
 205         {
 206             i_dts -= elst->i_media_time[p_track->i_elst];
 207         }
 208
 209         /* add i_elst_time */
 210         i_dts += p_track->i_elst_time * p_track->i_timescale /
 211             p_sys->i_timescale;
 212
 213         if( i_dts < 0 ) i_dts = 0;
 214     }
 215
 216     return I64C(1000000) * i_dts / p_track->i_timescale;
 217 }
 218
 219 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
 220 {
 221     mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
 222     unsigned int i_index = 0;
 223     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 224
 225     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 226         return -1;
 227
 228     for( i_index = 0;; i_index++ )
 229     {
 230         if( i_sample < ck->p_sample_count_pts[i_index] )
 231             return ck->p_sample_offset_pts[i_index] * I64C(1000000) / p_track->i_timescale;
 232
 233         i_sample -= ck->p_sample_count_pts[i_index];
 234     }
 235 }
 236
 237 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 238 {
 239     return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
 240 }
 241
 242 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
 243
 244 /*****************************************************************************
 245  * Open: check file and initializes MP4 structures
 246  *****************************************************************************/
 247 static int Open( vlc_object_t * p_this )
 248 {
 249     demux_t  *p_demux = (demux_t *)p_this;
 250     demux_sys_t     *p_sys;
 251
 252     uint8_t         *p_peek;
 253
 254     MP4_Box_t       *p_ftyp;
 255     MP4_Box_t       *p_rmra;
 256     MP4_Box_t       *p_mvhd;
 257     MP4_Box_t       *p_trak;
 258
 259     unsigned int    i;
 260     vlc_bool_t      b_seekable;
 261
 262     /* a little test to see if it could be a mp4 */
 263     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
 264     {
 265         msg_Warn( p_demux, "MP4 plugin discarded (cannot peek)" );
 266         return VLC_EGENERIC;
 267     }
 268     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 269     {
 270         case FOURCC_ftyp:
 271         case FOURCC_moov:
 272         case FOURCC_foov:
 273         case FOURCC_moof:
 274         case FOURCC_mdat:
 275         case FOURCC_udta:
 276         case FOURCC_free:
 277         case FOURCC_skip:
 278         case FOURCC_wide:
 279         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 280             break;
 281          default:
 282             msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 283             return VLC_EGENERIC;
 284     }
 285
 286     /* I need to seek */
 287     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 288     if( !b_seekable )
 289     {
 290         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 291         return VLC_EGENERIC;
 292     }
 293
 294     /*Set exported functions */
 295     p_demux->pf_demux = Demux;
 296     p_demux->pf_control = Control;
 297
 298     /* create our structure that will contains all data */
 299     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 300     memset( p_sys, 0, sizeof( demux_sys_t ) );
 301
 302     /* Now load all boxes ( except raw data ) */
 303     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 304     {
 305         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 306         goto error;
 307     }
 308
 309     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 310
 311     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 312     {
 313         switch( p_ftyp->data.p_ftyp->i_major_brand )
 314         {
 315             case( FOURCC_isom ):
 316                 msg_Dbg( p_demux,
 317                          "ISO Media file (isom) version %d.",
 318                          p_ftyp->data.p_ftyp->i_minor_version );
 319                 break;
 320             default:
 321                 msg_Dbg( p_demux,
 322                          "unrecognized major file specification (%4.4s).",
 323                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 324                 break;
 325         }
 326     }
 327     else
 328     {
 329         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 330     }
 331
 332     /* the file need to have one moov box */
 333     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 334     {
 335         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 336
 337         if( !p_foov )
 338         {
 339             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 340             goto error;
 341         }
 342         /* we have a free box as a moov, rename it */
 343         p_foov->i_type = FOURCC_moov;
 344     }
 345
 346     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 347     {
 348         playlist_t *p_playlist;
 349         playlist_item_t *p_item;
 350         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 351         int        i;
 352         vlc_bool_t b_play = VLC_FALSE;
 353
 354         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 355
 356         p_playlist =
 357             (playlist_t *)vlc_object_find( p_demux,
 358                                            VLC_OBJECT_PLAYLIST,
 359                                            FIND_ANYWHERE );
 360         if( p_playlist )
 361         {
 362             p_item = playlist_LockItemGetByInput( p_playlist,
 363                       ((input_thread_t *)p_demux->p_parent)->input.p_item );
 364             playlist_ItemToNode( p_playlist, p_item );
 365
 366             for( i = 0; i < i_count; i++ )
 367             {
 368                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 369                 char      *psz_ref;
 370                 uint32_t  i_ref_type;
 371
 372                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 373                 {
 374                     continue;
 375                 }
 376                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 377
 378                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 379                          psz_ref, (char*)&i_ref_type );
 380
 381                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 382                 {
 383                     if( strstr( psz_ref, "qt5gateQT" ) )
 384                     {
 385                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 386                         continue;
 387                     }
 388                     if( !strncmp( psz_ref, "http://", 7 ) ||
 389                         !strncmp( psz_ref, "rtsp://", 7 ) )
 390                     {
 391                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 392                         if( p_item )
 393                         {
 394                             playlist_item_t *p_child =
 395                                         playlist_ItemNew( p_playlist,
 396                                                           psz_ref, psz_ref );
 397                             if( p_child )
 398                             {
 399                                 playlist_NodeAddItem( p_playlist, p_child,
 400                                                  p_item->pp_parents[0]->i_view,
 401                                                  p_item, PLAYLIST_APPEND,
 402                                                  PLAYLIST_END );
 403                                 playlist_CopyParents( p_item, p_child );
 404                                 b_play = VLC_TRUE;
 405                             }
 406                         }
 407                     }
 408                     else
 409                     {
 410                         /* msg dbg relative ? */
 411                         char *psz_absolute = alloca( strlen( p_demux->psz_access ) + 3 + strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1);
 412                         char *end = strrchr( p_demux->psz_path, '/' );
 413
 414                         if( end )
 415                         {
 416                             int i_len = end + 1 - p_demux->psz_path;
 417
 418                             strcpy( psz_absolute, p_demux->psz_access );
 419                             strcat( psz_absolute, "://" );
 420                             strncat( psz_absolute, p_demux->psz_path, i_len);
 421                         }
 422                         else
 423                         {
 424                             strcpy( psz_absolute, "" );
 425                         }
 426                         strcat( psz_absolute, psz_ref );
 427                         msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
 428                         if( p_item )
 429                         {
 430                             playlist_item_t *p_child =
 431                                         playlist_ItemNew( p_playlist,
 432                                                           psz_absolute,
 433                                                           psz_absolute );
 434                             if( p_child )
 435                             {
 436                                 playlist_NodeAddItem( p_playlist, p_child,
 437                                                  p_item->pp_parents[0]->i_view,
 438                                                  p_item, PLAYLIST_APPEND,
 439                                                  PLAYLIST_END );
 440                                 playlist_CopyParents( p_item, p_child );
 441                                 b_play = VLC_TRUE;
 442                             }
 443                         }
 444                     }
 445                 }
 446                 else
 447                 {
 448                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 449                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 450                 }
 451             }
 452             if( b_play == VLC_TRUE )
 453             {
 454                  playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 455                                    p_playlist->status.i_view,
 456                                    p_playlist->status.p_item, NULL );
 457             }
 458             vlc_object_release( p_playlist );
 459         }
 460         else
 461         {
 462             msg_Err( p_demux, "can't find playlist" );
 463         }
 464     }
 465
 466     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 467     {
 468         if( !p_rmra )
 469         {
 470             msg_Err( p_demux, "cannot find /moov/mvhd" );
 471             goto error;
 472         }
 473         else
 474         {
 475             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 476             p_demux->pf_demux = DemuxRef;
 477             return VLC_SUCCESS;
 478         }
 479     }
 480     else
 481     {
 482         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 483         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 484     }
 485
 486     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 487     {
 488         msg_Err( p_demux, "cannot find any /moov/trak" );
 489         goto error;
 490     }
 491     msg_Dbg( p_demux, "find %d track%c",
 492                         p_sys->i_tracks,
 493                         p_sys->i_tracks ? 's':' ' );
 494
 495     /* allocate memory */
 496     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 497     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 498
 499     /* now process each track and extract all usefull information */
 500     for( i = 0; i < p_sys->i_tracks; i++ )
 501     {
 502         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 503         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 504
 505         if( p_sys->track[i].b_ok )
 506         {
 507             char *psz_cat;
 508             switch( p_sys->track[i].fmt.i_cat )
 509             {
 510                 case( VIDEO_ES ):
 511                     psz_cat = "video";
 512                     break;
 513                 case( AUDIO_ES ):
 514                     psz_cat = "audio";
 515                     break;
 516                 case( SPU_ES ):
 517                     psz_cat = "subtitle";
 518                     break;
 519
 520                 default:
 521                     psz_cat = "unknown";
 522                     break;
 523             }
 524
 525             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 526                      p_sys->track[i].i_track_ID, psz_cat,
 527                      p_sys->track[i].b_enable ? "enable":"disable",
 528                      p_sys->track[i].fmt.psz_language ?
 529                      p_sys->track[i].fmt.psz_language : "undef" );
 530         }
 531         else
 532         {
 533             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 534                      p_sys->track[i].i_track_ID );
 535         }
 536
 537     }
 538     return VLC_SUCCESS;
 539
 540 error:
 541     if( p_sys->p_root )
 542     {
 543         MP4_BoxFree( p_demux->s, p_sys->p_root );
 544     }
 545     free( p_sys );
 546     return VLC_EGENERIC;
 547 }
 548
 549 /*****************************************************************************
 550  * Demux: read packet and send them to decoders
 551  *****************************************************************************
 552  * TODO check for newly selected track (ie audio upt to now )
 553  *****************************************************************************/
 554 static int Demux( demux_t *p_demux )
 555 {
 556     demux_sys_t *p_sys = p_demux->p_sys;
 557     unsigned int i_track;
 558
 559
 560     unsigned int i_track_selected;
 561
 562     /* check for newly selected/unselected track */
 563     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 564          i_track++ )
 565     {
 566         mp4_track_t *tk = &p_sys->track[i_track];
 567
 568         if( tk->b_selected && tk->i_sample >= tk->i_sample_count )
 569         {
 570             msg_Warn( p_demux, "track[0x%x] will be disabled", tk->i_track_ID );
 571             MP4_TrackUnselect( p_demux, tk);
 572         }
 573         else if( tk->b_ok )
 574         {
 575             vlc_bool_t b;
 576             es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 577
 578             if( tk->b_selected && !b )
 579             {
 580                 MP4_TrackUnselect( p_demux, tk );
 581             }
 582             else if( !tk->b_selected && b)
 583             {
 584                 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 585             }
 586
 587             if( tk->b_selected )
 588             {
 589                 i_track_selected++;
 590             }
 591         }
 592     }
 593
 594     if( i_track_selected <= 0 )
 595     {
 596         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 597         if( p_sys->i_timescale > 0 )
 598         {
 599             int64_t i_length = (mtime_t)1000000 *
 600                                (mtime_t)p_sys->i_duration /
 601                                (mtime_t)p_sys->i_timescale;
 602             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 603                 return 0;
 604             return 1;
 605         }
 606
 607         msg_Warn( p_demux, "no track selected, exiting..." );
 608         return 0;
 609     }
 610
 611     /* first wait for the good time to read a packet */
 612     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
 613
 614     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 615
 616     /* we will read 100ms for each stream so ...*/
 617     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 618
 619     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 620     {
 621         mp4_track_t *tk = &p_sys->track[i_track];
 622
 623         if( !tk->b_ok || !tk->b_selected )
 624         {
 625             continue;
 626         }
 627
 628         while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 629         {
 630 #if 0
 631             msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
 632                      MP4_TrackGetDTS( p_demux, tk ),
 633                      MP4_GetMoviePTS( p_sys ) );
 634 #endif
 635
 636             if( MP4_TrackSampleSize( tk ) > 0 )
 637             {
 638                 block_t *p_block;
 639                 int64_t i_delta;
 640
 641                 /* go,go go ! */
 642                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 643                 {
 644                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 645                               tk->i_track_ID );
 646                     MP4_TrackUnselect( p_demux, tk );
 647                     break;
 648                 }
 649
 650                 /* now read pes */
 651                 if( !(p_block =
 652                          stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
 653                 {
 654                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 655                               tk->i_track_ID );
 656                     MP4_TrackUnselect( p_demux, tk );
 657                     break;
 658                 }
 659
 660                 if( tk->b_drms && tk->p_drms )
 661                 {
 662                     drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
 663                                   p_block->i_buffer );
 664                 }
 665                 else if( tk->fmt.i_cat == SPU_ES )
 666                 {
 667                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
 668                         p_block->i_buffer >= 2 )
 669                     {
 670                         uint16_t i_size = GetWBE( p_block->p_buffer );
 671
 672                         if( i_size + 2 <= p_block->i_buffer )
 673                         {
 674                             char *p;
 675                             /* remove the length field, and append a '\0' */
 676                             memmove( &p_block->p_buffer[0],
 677                                      &p_block->p_buffer[2], i_size );
 678                             p_block->p_buffer[i_size] = '\0';
 679                             p_block->i_buffer = i_size + 1;
 680
 681                             /* convert \r -> \n */
 682                             while( ( p = strchr( p_block->p_buffer, '\r' ) ) )
 683                             {
 684                                 *p = '\n';
 685                             }
 686                         }
 687                         else
 688                         {
 689                             /* Invalid */
 690                             p_block->i_buffer = 0;
 691                         }
 692                     }
 693                 }
 694                 /* dts */
 695                 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
 696                 /* pts */
 697                 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
 698                 if( i_delta >= 0 )
 699                     p_block->i_pts = p_block->i_dts + i_delta;
 700                 else if( tk->fmt.i_cat != VIDEO_ES )
 701                     p_block->i_pts = p_block->i_dts;
 702                 else
 703                     p_block->i_pts = 0;
 704
 705                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 706                     es_out_Send( p_demux->out, tk->p_es, p_block );
 707             }
 708
 709             /* Next sample */
 710             if( MP4_TrackNextSample( p_demux, tk ) )
 711             {
 712                 break;
 713             }
 714         }
 715     }
 716
 717     return 1;
 718 }
 719 /*****************************************************************************
 720  * Seek: Got to i_date
 721 ******************************************************************************/
 722 static int Seek( demux_t *p_demux, mtime_t i_date )
 723 {
 724     demux_sys_t *p_sys = p_demux->p_sys;
 725     unsigned int i_track;
 726
 727     /* First update update global time */
 728     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 729     p_sys->i_pcr  = i_date;
 730
 731     /* Now for each stream try to go to this time */
 732     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 733     {
 734         mp4_track_t *tk = &p_sys->track[i_track];
 735         MP4_TrackSeek( p_demux, tk, i_date );
 736     }
 737     return VLC_SUCCESS;
 738 }
 739
 740 /*****************************************************************************
 741  * Control:
 742  *****************************************************************************/
 743 static int Control( demux_t *p_demux, int i_query, va_list args )
 744 {
 745     demux_sys_t *p_sys = p_demux->p_sys;
 746
 747     double f, *pf;
 748     int64_t i64, *pi64;
 749
 750     switch( i_query )
 751     {
 752         case DEMUX_GET_POSITION:
 753             pf = (double*)va_arg( args, double * );
 754             if( p_sys->i_duration > 0 )
 755             {
 756                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 757             }
 758             else
 759             {
 760                 *pf = 0.0;
 761             }
 762             return VLC_SUCCESS;
 763
 764         case DEMUX_SET_POSITION:
 765             f = (double)va_arg( args, double );
 766             if( p_sys->i_timescale > 0 )
 767             {
 768                 i64 = (int64_t)( f * (double)1000000 *
 769                                  (double)p_sys->i_duration /
 770                                  (double)p_sys->i_timescale );
 771                 return Seek( p_demux, i64 );
 772             }
 773             else return VLC_SUCCESS;
 774
 775         case DEMUX_GET_TIME:
 776             pi64 = (int64_t*)va_arg( args, int64_t * );
 777             if( p_sys->i_timescale > 0 )
 778             {
 779                 *pi64 = (mtime_t)1000000 *
 780                         (mtime_t)p_sys->i_time /
 781                         (mtime_t)p_sys->i_timescale;
 782             }
 783             else *pi64 = 0;
 784             return VLC_SUCCESS;
 785
 786         case DEMUX_SET_TIME:
 787             i64 = (int64_t)va_arg( args, int64_t );
 788             return Seek( p_demux, i64 );
 789
 790         case DEMUX_GET_LENGTH:
 791             pi64 = (int64_t*)va_arg( args, int64_t * );
 792             if( p_sys->i_timescale > 0 )
 793             {
 794                 *pi64 = (mtime_t)1000000 *
 795                         (mtime_t)p_sys->i_duration /
 796                         (mtime_t)p_sys->i_timescale;
 797             }
 798             else *pi64 = 0;
 799             return VLC_SUCCESS;
 800
 801         case DEMUX_GET_FPS:
 802             msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
 803             return VLC_EGENERIC;
 804
 805         case DEMUX_GET_META:
 806         {
 807             vlc_meta_t **pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
 808             vlc_meta_t *meta;
 809             MP4_Box_t  *p_udta   = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 810             MP4_Box_t  *p_0xa9xxx;
 811             if( p_udta == NULL )
 812             {
 813                 return VLC_EGENERIC;
 814             }
 815             *pp_meta = meta = vlc_meta_New();
 816             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 817                  p_0xa9xxx = p_0xa9xxx->p_next )
 818             {
 819                 switch( p_0xa9xxx->i_type )
 820                 {
 821                 case FOURCC_0xa9nam: /* Full name */
 822                     vlc_meta_Add( meta, VLC_META_TITLE,
 823                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 824                     break;
 825                 case FOURCC_0xa9aut:
 826                     vlc_meta_Add( meta, VLC_META_AUTHOR,
 827                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 828                     break;
 829                 case FOURCC_0xa9ART:
 830                     vlc_meta_Add( meta, VLC_META_ARTIST,
 831                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 832                     break;
 833                 case FOURCC_0xa9cpy:
 834                     vlc_meta_Add( meta, VLC_META_COPYRIGHT,
 835                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 836                     break;
 837                 case FOURCC_0xa9day: /* Creation Date */
 838                     vlc_meta_Add( meta, VLC_META_DATE,
 839                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 840                     break;
 841                 case FOURCC_0xa9des: /* Description */
 842                     vlc_meta_Add( meta, VLC_META_DESCRIPTION,
 843                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 844                     break;
 845                 case FOURCC_0xa9gen: /* Genre */
 846                     vlc_meta_Add( meta, VLC_META_GENRE,
 847                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 848                     break;
 849
 850                 case FOURCC_0xa9swr:
 851                 case FOURCC_0xa9inf: /* Information */
 852                 case FOURCC_0xa9alb: /* Album */
 853                 case FOURCC_0xa9dir: /* Director */
 854                 case FOURCC_0xa9dis: /* Disclaimer */
 855                 case FOURCC_0xa9enc: /* Encoded By */
 856                 case FOURCC_0xa9trk: /* Track */
 857                 case FOURCC_0xa9cmt: /* Commment */
 858                 case FOURCC_0xa9url: /* URL */
 859                 case FOURCC_0xa9req: /* Requirements */
 860                 case FOURCC_0xa9fmt: /* Original Format */
 861                 case FOURCC_0xa9dsa: /* Display Source As */
 862                 case FOURCC_0xa9hst: /* Host Computer */
 863                 case FOURCC_0xa9prd: /* Producer */
 864                 case FOURCC_0xa9prf: /* Performers */
 865                 case FOURCC_0xa9ope: /* Original Performer */
 866                 case FOURCC_0xa9src: /* Providers Source Content */
 867                 case FOURCC_0xa9wrt: /* Writer */
 868                 case FOURCC_0xa9com: /* Composer */
 869                 case FOURCC_WLOC:    /* Window Location */
 870                     /* TODO one day, but they aren't really meaningfull */
 871                     break;
 872
 873                 default:
 874                     break;
 875                 }
 876             }
 877             return VLC_SUCCESS;
 878         }
 879
 880         case DEMUX_GET_TITLE_INFO:
 881         case DEMUX_SET_NEXT_DEMUX_TIME:
 882         case DEMUX_SET_GROUP:
 883             return VLC_EGENERIC;
 884
 885         default:
 886             msg_Warn( p_demux, "control query unimplemented !!!" );
 887             return VLC_EGENERIC;
 888     }
 889 }
 890
 891 /*****************************************************************************
 892  * Close: frees unused data
 893  *****************************************************************************/
 894 static void Close ( vlc_object_t * p_this )
 895 {
 896     unsigned int i_track;
 897     demux_t *  p_demux = (demux_t *)p_this;
 898     demux_sys_t *p_sys = p_demux->p_sys;
 899
 900     msg_Dbg( p_demux, "freeing all memory" );
 901
 902     MP4_BoxFree( p_demux->s, p_sys->p_root );
 903     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 904     {
 905         MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
 906     }
 907     FREE( p_sys->track );
 908
 909     free( p_sys );
 910 }
 911
 912
 913
 914 /****************************************************************************
 915  * Local functions, specific to vlc
 916  ****************************************************************************/
 917
 918 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 919 static int TrackCreateChunksIndex( demux_t *p_demux,
 920                                    mp4_track_t *p_demux_track )
 921 {
 922     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 923     MP4_Box_t *p_stsc;
 924
 925     unsigned int i_chunk;
 926     unsigned int i_index, i_last;
 927
 928     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 929           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 930         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 931     {
 932         return( VLC_EGENERIC );
 933     }
 934
 935     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 936     if( !p_demux_track->i_chunk_count )
 937     {
 938         msg_Warn( p_demux, "no chunk defined" );
 939         return( VLC_EGENERIC );
 940     }
 941     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 942                                    sizeof( mp4_chunk_t ) );
 943
 944     /* first we read chunk offset */
 945     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 946     {
 947         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
 948
 949         ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
 950
 951         ck->i_first_dts = 0;
 952         ck->p_sample_count_dts = NULL;
 953         ck->p_sample_delta_dts = NULL;
 954         ck->p_sample_count_pts = NULL;
 955         ck->p_sample_offset_pts = NULL;
 956     }
 957
 958     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 959         to be used for the sample XXX begin to 1
 960         We construct it begining at the end */
 961     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 962     i_index = p_stsc->data.p_stsc->i_entry_count;
 963     if( !i_index )
 964     {
 965         msg_Warn( p_demux, "cannot read chunk table or table empty" );
 966         return( VLC_EGENERIC );
 967     }
 968
 969     while( i_index-- )
 970     {
 971         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 972              i_chunk < i_last; i_chunk++ )
 973         {
 974             p_demux_track->chunk[i_chunk].i_sample_description_index =
 975                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 976             p_demux_track->chunk[i_chunk].i_sample_count =
 977                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 978         }
 979         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 980     }
 981
 982     p_demux_track->chunk[0].i_sample_first = 0;
 983     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 984     {
 985         p_demux_track->chunk[i_chunk].i_sample_first =
 986             p_demux_track->chunk[i_chunk-1].i_sample_first +
 987                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 988     }
 989
 990     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
 991              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
 992
 993     return VLC_SUCCESS;
 994 }
 995
 996 static int TrackCreateSamplesIndex( demux_t *p_demux,
 997                                     mp4_track_t *p_demux_track )
 998 {
 999     MP4_Box_t *p_box;
1000     MP4_Box_data_stsz_t *stsz;
1001     MP4_Box_data_stts_t *stts;
1002     /* TODO use also stss and stsh table for seeking */
1003     /* FIXME use edit table */
1004     int64_t i_sample;
1005     int64_t i_chunk;
1006
1007     int64_t i_index;
1008     int64_t i_index_sample_used;
1009
1010     int64_t i_last_dts;
1011
1012     /* Find stsz
1013      *  Gives the sample size for each samples. There is also a stz2 table
1014      *  (compressed form) that we need to implement TODO */
1015     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1016     if( !p_box )
1017     {
1018         /* FIXME and stz2 */
1019         msg_Warn( p_demux, "cannot find STSZ box" );
1020         return VLC_EGENERIC;
1021     }
1022     stsz = p_box->data.p_stsz;
1023
1024     /* Find stts
1025      *  Gives mapping between sample and decoding time
1026      */
1027     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1028     if( !p_box )
1029     {
1030         msg_Warn( p_demux, "cannot find STTS box" );
1031         return VLC_EGENERIC;
1032     }
1033     stts = p_box->data.p_stts;
1034
1035     /* Use stsz table to create a sample number -> sample size table */
1036     p_demux_track->i_sample_count = stsz->i_sample_count;
1037     if( stsz->i_sample_size )
1038     {
1039         /* 1: all sample have the same size, so no need to construct a table */
1040         p_demux_track->i_sample_size = stsz->i_sample_size;
1041         p_demux_track->p_sample_size = NULL;
1042     }
1043     else
1044     {
1045         /* 2: each sample can have a different size */
1046         p_demux_track->i_sample_size = 0;
1047         p_demux_track->p_sample_size =
1048             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1049
1050         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1051         {
1052             p_demux_track->p_sample_size[i_sample] =
1053                     stsz->i_entry_size[i_sample];
1054         }
1055     }
1056
1057     /* Use stts table to crate a sample number -> dts table.
1058      * XXX: if we don't want to waste too much memory, we can't expand
1059      *  the box! so each chunk will contain an "extract" of this table
1060      *  for fast research (problem with raw stream where a sample is sometime
1061      *  just channels*bits_per_sample/8 */
1062
1063     i_last_dts = 0;
1064     i_index = 0; i_index_sample_used = 0;
1065     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1066     {
1067         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1068         int64_t i_entry, i_sample_count, i;
1069
1070         /* save last dts */
1071         ck->i_first_dts = i_last_dts;
1072
1073         /* count how many entries are needed for this chunk
1074          * for p_sample_delta_dts and p_sample_count_dts */
1075         i_sample_count = ck->i_sample_count;
1076
1077         i_entry = 0;
1078         while( i_sample_count > 0 )
1079         {
1080             i_sample_count -= stts->i_sample_count[i_index+i_entry];
1081             /* don't count already used sample in this entry */
1082             if( i_entry == 0 )
1083                 i_sample_count += i_index_sample_used;
1084
1085             i_entry++;
1086         }
1087
1088         /* allocate them */
1089         ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1090         ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1091
1092         /* now copy */
1093         i_sample_count = ck->i_sample_count;
1094         for( i = 0; i < i_entry; i++ )
1095         {
1096             int64_t i_used;
1097             int64_t i_rest;
1098
1099             i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1100
1101             i_used = __MIN( i_rest, i_sample_count );
1102
1103             i_index_sample_used += i_used;
1104             i_sample_count -= i_used;
1105
1106             ck->p_sample_count_dts[i] = i_used;
1107             ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1108
1109             i_last_dts += i_used * ck->p_sample_delta_dts[i];
1110
1111             if( i_index_sample_used >= stts->i_sample_count[i_index] )
1112             {
1113                 i_index++;
1114                 i_index_sample_used = 0;
1115             }
1116         }
1117     }
1118
1119     /* Find ctts
1120      *  Gives the delta between decoding time (dts) and composition table (pts)
1121      */
1122     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1123     if( p_box )
1124     {
1125         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1126
1127         msg_Warn( p_demux, "CTTS table" );
1128
1129         /* Create pts-dts table per chunk */
1130         i_index = 0; i_index_sample_used = 0;
1131         for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1132         {
1133             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1134             int64_t i_entry, i_sample_count, i;
1135
1136             /* count how many entries are needed for this chunk
1137              * for p_sample_delta_dts and p_sample_count_dts */
1138             i_sample_count = ck->i_sample_count;
1139
1140             i_entry = 0;
1141             while( i_sample_count > 0 )
1142             {
1143                 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1144
1145                 /* don't count already used sample in this entry */
1146                 if( i_entry == 0 )
1147                     i_sample_count += i_index_sample_used;
1148
1149                 i_entry++;
1150             }
1151
1152             /* allocate them */
1153             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1154             ck->p_sample_offset_pts = calloc( i_entry, sizeof( uint32_t ) );
1155
1156             /* now copy */
1157             i_sample_count = ck->i_sample_count;
1158             for( i = 0; i < i_entry; i++ )
1159             {
1160                 int64_t i_used;
1161                 int64_t i_rest;
1162
1163                 i_rest = ctts->i_sample_count[i_index] -
1164                     i_index_sample_used;
1165
1166                 i_used = __MIN( i_rest, i_sample_count );
1167
1168                 i_index_sample_used += i_used;
1169                 i_sample_count -= i_used;
1170
1171                 ck->p_sample_count_pts[i] = i_used;
1172                 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1173
1174                 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1175                 {
1176                     i_index++;
1177                     i_index_sample_used = 0;
1178                 }
1179             }
1180         }
1181     }
1182
1183     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1184              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1185              i_last_dts / p_demux_track->i_timescale );
1186
1187     return VLC_SUCCESS;
1188 }
1189
1190 /*
1191  * TrackCreateES:
1192  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1193  */
1194 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1195                           unsigned int i_chunk, es_out_id_t **pp_es )
1196 {
1197     MP4_Box_t   *p_sample;
1198     MP4_Box_t   *p_esds;
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         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1277             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1278             break;
1279         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1280             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1281             break;
1282
1283         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1284             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1285             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1286             /* FIXME UTF-8 doesn't work here ? */
1287             /* p_track->fmt.subs.psz_encoding = strdup( "UTF-8" ); */
1288             break;
1289
1290         default:
1291             p_track->fmt.i_codec = p_sample->i_type;
1292             break;
1293     }
1294
1295     /* now see if esds is present and if so create a data packet
1296         with decoder_specific_info  */
1297 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1298     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1299           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1300         ( p_esds->data.p_esds )&&
1301         ( p_decconfig ) )
1302     {
1303         /* First update information based on i_objectTypeIndication */
1304         switch( p_decconfig->i_objectTypeIndication )
1305         {
1306             case( 0x20 ): /* MPEG4 VIDEO */
1307                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1308                 break;
1309             case( 0x40):
1310                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1311                 break;
1312             case( 0x60):
1313             case( 0x61):
1314             case( 0x62):
1315             case( 0x63):
1316             case( 0x64):
1317             case( 0x65): /* MPEG2 video */
1318                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1319                 break;
1320             /* Theses are MPEG2-AAC */
1321             case( 0x66): /* main profile */
1322             case( 0x67): /* Low complexity profile */
1323             case( 0x68): /* Scaleable Sampling rate profile */
1324                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1325                 break;
1326             /* true MPEG 2 audio */
1327             case( 0x69):
1328                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1329                 break;
1330             case( 0x6a): /* MPEG1 video */
1331                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1332                 break;
1333             case( 0x6b): /* MPEG1 audio */
1334                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1335                 break;
1336             case( 0x6c ): /* jpeg */
1337                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1338                 break;
1339
1340             /* Private ID */
1341             case( 0xe0 ): /* NeroDigital: dvd subs */
1342                 if( p_track->fmt.i_cat == SPU_ES )
1343                 {
1344                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1345                     break;
1346                 }
1347             /* Fallback */
1348             default:
1349                 /* Unknown entry, but don't touch i_fourcc */
1350                 msg_Warn( p_demux,
1351                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1352                           p_decconfig->i_objectTypeIndication,
1353                           p_track->i_track_ID );
1354                 break;
1355         }
1356         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1357         if( p_track->fmt.i_extra > 0 )
1358         {
1359             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1360             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1361                     p_track->fmt.i_extra );
1362         }
1363     }
1364     else
1365     {
1366         switch( p_sample->i_type )
1367         {
1368             /* qt decoder, send the complete chunk */
1369             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1370             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1371             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1372             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1373             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1374                 p_track->fmt.i_extra =
1375                     p_sample->data.p_sample_vide->i_qt_image_description;
1376                 if( p_track->fmt.i_extra > 0 )
1377                 {
1378                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1379                     memcpy( p_track->fmt.p_extra,
1380                             p_sample->data.p_sample_vide->p_qt_image_description,
1381                             p_track->fmt.i_extra);
1382                 }
1383                 break;
1384             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1385             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1386             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1387             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1388                 p_track->fmt.i_extra =
1389                     p_sample->data.p_sample_soun->i_qt_description;
1390                 if( p_track->fmt.i_extra > 0 )
1391                 {
1392                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1393                     memcpy( p_track->fmt.p_extra,
1394                             p_sample->data.p_sample_soun->p_qt_description,
1395                             p_track->fmt.i_extra);
1396                 }
1397                 break;
1398
1399             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1400             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1401             {
1402                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1403
1404                 if( p_avcC )
1405                 {
1406                     /* Hack: use a packetizer to reecampsulate data in anexe B format */
1407                     msg_Dbg( p_demux, "avcC: size=%d", p_avcC->data.p_avcC->i_avcC );
1408                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1409                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1410                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC, p_track->fmt.i_extra );
1411                     p_track->fmt.b_packetized = VLC_FALSE;
1412                 }
1413                 else
1414                 {
1415                     msg_Err( p_demux, "missing avcC" );
1416                 }
1417                 break;
1418             }
1419
1420             default:
1421                 break;
1422         }
1423     }
1424
1425 #undef p_decconfig
1426
1427     /* some last initialisation */
1428     switch( p_track->fmt.i_cat )
1429     {
1430     case( VIDEO_ES ):
1431         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1432         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1433
1434         /* fall on display size */
1435         if( p_track->fmt.video.i_width <= 0 )
1436             p_track->fmt.video.i_width = p_track->i_width;
1437         if( p_track->fmt.video.i_height <= 0 )
1438             p_track->fmt.video.i_height = p_track->i_height;
1439
1440         /* Find out apect ratio from display size */
1441         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1442             /* Work-around buggy muxed files */
1443             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1444             p_track->fmt.video.i_aspect =
1445                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1446
1447         break;
1448
1449     case( AUDIO_ES ):
1450         p_track->fmt.audio.i_channels =
1451             p_sample->data.p_sample_soun->i_channelcount;
1452         p_track->fmt.audio.i_rate =
1453             p_sample->data.p_sample_soun->i_sampleratehi;
1454         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1455             p_sample->data.p_sample_soun->i_sampleratehi *
1456                 p_sample->data.p_sample_soun->i_samplesize;
1457         p_track->fmt.audio.i_bitspersample =
1458             p_sample->data.p_sample_soun->i_samplesize;
1459         break;
1460
1461     default:
1462         break;
1463     }
1464
1465     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1466
1467     return VLC_SUCCESS;
1468 }
1469
1470 /* given a time it return sample/chunk
1471  * it also update elst field of the track
1472  */
1473 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1474                                    int64_t i_start, uint32_t *pi_chunk,
1475                                    uint32_t *pi_sample )
1476 {
1477     demux_sys_t *p_sys = p_demux->p_sys;
1478     MP4_Box_t   *p_stss;
1479     uint64_t     i_dts;
1480     unsigned int i_sample;
1481     unsigned int i_chunk;
1482     int          i_index;
1483
1484     /* FIXME see if it's needed to check p_track->i_chunk_count */
1485     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1486     {
1487         return( VLC_EGENERIC );
1488     }
1489
1490     /* handle elst (find the correct one) */
1491     MP4_TrackSetELST( p_demux, p_track, i_start );
1492     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1493     {
1494         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1495         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1496
1497         /* now calculate i_start for this elst */
1498         /* offset */
1499         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1500         if( i_start < 0 )
1501         {
1502             *pi_chunk = 0;
1503             *pi_sample= 0;
1504
1505             return VLC_SUCCESS;
1506         }
1507         /* to track time scale */
1508         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1509         /* add elst offset */
1510         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1511              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1512             elst->i_media_time[p_track->i_elst] > 0 )
1513         {
1514             i_start += elst->i_media_time[p_track->i_elst];
1515         }
1516
1517         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1518                  "ms (track)", p_track->i_elst,
1519                  i_mvt * 1000 / p_sys->i_timescale,
1520                  i_start * 1000 / p_track->i_timescale );
1521     }
1522     else
1523     {
1524         /* convert absolute time to in timescale unit */
1525         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1526     }
1527
1528     /* we start from sample 0/chunk 0, hope it won't take too much time */
1529     /* *** find good chunk *** */
1530     for( i_chunk = 0; ; i_chunk++ )
1531     {
1532         if( i_chunk + 1 >= p_track->i_chunk_count )
1533         {
1534             /* at the end and can't check if i_start in this chunk,
1535                it will be check while searching i_sample */
1536             i_chunk = p_track->i_chunk_count - 1;
1537             break;
1538         }
1539
1540         if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1541             i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1542         {
1543             break;
1544         }
1545     }
1546
1547     /* *** find sample in the chunk *** */
1548     i_sample = p_track->chunk[i_chunk].i_sample_first;
1549     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1550     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1551     {
1552         if( i_dts +
1553             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1554             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1555         {
1556             i_dts    +=
1557                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1558                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1559
1560             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1561             i_index++;
1562         }
1563         else
1564         {
1565             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1566             {
1567                 break;
1568             }
1569             i_sample += ( i_start - i_dts ) /
1570                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1571             break;
1572         }
1573     }
1574
1575     if( i_sample >= p_track->i_sample_count )
1576     {
1577         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1578                   "(seeking too far) chunk=%d sample=%d",
1579                   p_track->i_track_ID, i_chunk, i_sample );
1580         return( VLC_EGENERIC );
1581     }
1582
1583
1584     /* *** Try to find nearest sync points *** */
1585     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1586     {
1587         unsigned int i_index;
1588         msg_Dbg( p_demux,
1589                     "track[Id 0x%x] using Sync Sample Box (stss)",
1590                     p_track->i_track_ID );
1591         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1592         {
1593             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1594             {
1595                 if( i_index > 0 )
1596                 {
1597                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1598                             i_sample,
1599                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1600                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1601                     /* new i_sample is less than old so i_chunk can only decreased */
1602                     while( i_chunk > 0 &&
1603                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1604                     {
1605                         i_chunk--;
1606                     }
1607                 }
1608                 else
1609                 {
1610                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1611                             i_sample,
1612                             p_stss->data.p_stss->i_sample_number[i_index] );
1613                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1614                     /* new i_sample is more than old so i_chunk can only increased */
1615                     while( i_chunk < p_track->i_chunk_count - 1 &&
1616                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1617                              p_track->chunk[i_chunk].i_sample_count )
1618                     {
1619                         i_chunk++;
1620                     }
1621                 }
1622                 break;
1623             }
1624         }
1625     }
1626     else
1627     {
1628         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1629                  "Sample Box (stss)", p_track->i_track_ID );
1630     }
1631
1632     *pi_chunk  = i_chunk;
1633     *pi_sample = i_sample;
1634
1635     return VLC_SUCCESS;
1636 }
1637
1638 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1639                                  unsigned int i_chunk, unsigned int i_sample )
1640 {
1641     vlc_bool_t b_reselect = VLC_FALSE;
1642
1643     /* now see if actual es is ok */
1644     if( p_track->i_chunk < 0 ||
1645         p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1646         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1647             p_track->chunk[i_chunk].i_sample_description_index )
1648     {
1649         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1650                   p_track->i_track_ID );
1651
1652         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1653                         p_track->p_es, &b_reselect );
1654
1655         es_out_Del( p_demux->out, p_track->p_es );
1656
1657         p_track->p_es = NULL;
1658
1659         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1660         {
1661             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1662                      p_track->i_track_ID );
1663
1664             p_track->b_ok       = VLC_FALSE;
1665             p_track->b_selected = VLC_FALSE;
1666             return VLC_EGENERIC;
1667         }
1668     }
1669
1670     /* select again the new decoder */
1671     if( b_reselect )
1672     {
1673         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1674     }
1675
1676     p_track->i_chunk    = i_chunk;
1677     p_track->i_sample   = i_sample;
1678
1679     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1680 }
1681
1682 /****************************************************************************
1683  * MP4_TrackCreate:
1684  ****************************************************************************
1685  * Parse track information and create all needed data to run a track
1686  * If it succeed b_ok is set to 1 else to 0
1687  ****************************************************************************/
1688 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1689                              MP4_Box_t *p_box_trak )
1690 {
1691     demux_sys_t *p_sys = p_demux->p_sys;
1692
1693     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1694     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1695     MP4_Box_t *p_elst;
1696
1697     MP4_Box_t *p_mdhd;
1698     MP4_Box_t *p_udta;
1699     MP4_Box_t *p_hdlr;
1700
1701     MP4_Box_t *p_vmhd;
1702     MP4_Box_t *p_smhd;
1703
1704     MP4_Box_t *p_drms;
1705
1706     unsigned int i;
1707     char language[4];
1708
1709     /* hint track unsuported */
1710
1711     /* set default value (-> track unusable) */
1712     p_track->b_ok       = VLC_FALSE;
1713     p_track->b_enable   = VLC_FALSE;
1714     p_track->b_selected = VLC_FALSE;
1715
1716     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1717
1718     if( !p_tkhd )
1719     {
1720         return;
1721     }
1722
1723     /* do we launch this track by default ? */
1724     p_track->b_enable =
1725         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1726
1727     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1728     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1729     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1730
1731     if( p_tref )
1732     {
1733 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1734     }
1735
1736     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1737     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1738
1739     if( ( !p_mdhd )||( !p_hdlr ) )
1740     {
1741         return;
1742     }
1743
1744     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1745
1746     for( i = 0; i < 3; i++ )
1747     {
1748         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1749     }
1750     language[3] = '\0';
1751
1752     switch( p_hdlr->data.p_hdlr->i_handler_type )
1753     {
1754         case( FOURCC_soun ):
1755             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1756             {
1757                 return;
1758             }
1759             p_track->fmt.i_cat = AUDIO_ES;
1760             break;
1761
1762         case( FOURCC_vide ):
1763             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1764             {
1765                 return;
1766             }
1767             p_track->fmt.i_cat = VIDEO_ES;
1768             break;
1769
1770         case( FOURCC_text ):
1771         case( FOURCC_subp ):
1772             p_track->fmt.i_cat = SPU_ES;
1773             break;
1774
1775         default:
1776             return;
1777     }
1778
1779     p_track->i_elst = 0;
1780     p_track->i_elst_time = 0;
1781     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1782     {
1783         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1784         int i;
1785
1786         msg_Warn( p_demux, "elst box found" );
1787         for( i = 0; i < elst->i_entry_count; i++ )
1788         {
1789             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd
1790                      "ms) rate=%d.%d", i,
1791                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1792                      elst->i_media_time[i] >= 0 ?
1793                      elst->i_media_time[i] * 1000 / p_track->i_timescale : -1,
1794                      elst->i_media_rate_integer[i],
1795                      elst->i_media_rate_fraction[i] );
1796         }
1797     }
1798
1799
1800 /*  TODO
1801     add support for:
1802     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1803 */
1804     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1805         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1806     {
1807         return;
1808     }
1809
1810     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1811     p_track->b_drms = p_drms != NULL;
1812     p_track->p_drms = p_track->b_drms ?
1813         p_drms->data.p_sample_soun->p_drms : NULL;
1814
1815     /* Set language */
1816     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1817     {
1818         p_track->fmt.psz_language = strdup( language );
1819     }
1820
1821     p_udta = MP4_BoxGet( p_box_trak, "udta" );
1822     if( p_udta )
1823     {
1824         MP4_Box_t *p_0xa9xxx;
1825         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1826                  p_0xa9xxx = p_0xa9xxx->p_next )
1827         {
1828             switch( p_0xa9xxx->i_type )
1829             {
1830                 case FOURCC_0xa9nam:
1831                     p_track->fmt.psz_description =
1832                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1833                     break;
1834             }
1835         }
1836     }
1837
1838     /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1839     if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1840     {
1841         MP4_Box_t *p_sample;
1842
1843         p_sample = MP4_BoxGet(  p_track->p_stsd, "[0]" );
1844         if( p_sample && p_sample->data.p_sample_soun)
1845         {
1846             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1847             if( p_soun->i_qt_version == 0 &&
1848                 p_track->i_timescale != p_soun->i_sampleratehi )
1849             {
1850                 msg_Warn( p_demux,
1851                           "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1852                           "qt_version == 0\n"
1853                           "Making both equal. (report any problem)",
1854                           p_track->i_timescale, p_soun->i_sampleratehi );
1855
1856                 if( p_soun->i_sampleratehi )
1857                     p_track->i_timescale = p_soun->i_sampleratehi;
1858                 else
1859                     p_soun->i_sampleratehi = p_track->i_timescale;
1860             }
1861         }
1862     }
1863
1864     /* Create chunk index table and sample index table */
1865     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1866         TrackCreateSamplesIndex( p_demux, p_track ) )
1867     {
1868         return; /* cannot create chunks index */
1869     }
1870
1871     p_track->i_chunk  = 0;
1872     p_track->i_sample = 0;
1873
1874     /* now create es */
1875     if( TrackCreateES( p_demux,
1876                        p_track, p_track->i_chunk,
1877                        &p_track->p_es ) )
1878     {
1879         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1880                  p_track->i_track_ID );
1881         return;
1882     }
1883
1884 #if 0
1885     {
1886         int i;
1887         for( i = 0; i < p_track->i_chunk_count; i++ )
1888         {
1889             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1890                      i, p_track->chunk[i].i_sample_count,
1891                      p_track->chunk[i].i_first_dts );
1892
1893         }
1894     }
1895 #endif
1896     p_track->b_ok = VLC_TRUE;
1897 }
1898
1899 /****************************************************************************
1900  * MP4_TrackDestroy:
1901  ****************************************************************************
1902  * Destroy a track created by MP4_TrackCreate.
1903  ****************************************************************************/
1904 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1905 {
1906     unsigned int i_chunk;
1907
1908     p_track->b_ok = VLC_FALSE;
1909     p_track->b_enable   = VLC_FALSE;
1910     p_track->b_selected = VLC_FALSE;
1911
1912     es_format_Clean( &p_track->fmt );
1913
1914     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1915     {
1916         if( p_track->chunk )
1917         {
1918            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1919            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1920
1921            FREE(p_track->chunk[i_chunk].p_sample_count_pts);
1922            FREE(p_track->chunk[i_chunk].p_sample_offset_pts );
1923         }
1924     }
1925     FREE( p_track->chunk );
1926
1927     if( !p_track->i_sample_size )
1928     {
1929         FREE( p_track->p_sample_size );
1930     }
1931 }
1932
1933 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1934                             mtime_t i_start )
1935 {
1936     if( !p_track->b_ok )
1937     {
1938         return VLC_EGENERIC;
1939     }
1940
1941     if( p_track->b_selected )
1942     {
1943         msg_Warn( p_demux, "track[Id 0x%x] already selected",
1944                   p_track->i_track_ID );
1945         return VLC_SUCCESS;
1946     }
1947
1948     return MP4_TrackSeek( p_demux, p_track, i_start );
1949 }
1950
1951 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1952 {
1953     if( !p_track->b_ok )
1954     {
1955         return;
1956     }
1957
1958     if( !p_track->b_selected )
1959     {
1960         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1961                   p_track->i_track_ID );
1962         return;
1963     }
1964     if( p_track->p_es )
1965     {
1966         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1967                         p_track->p_es, VLC_FALSE );
1968     }
1969
1970     p_track->b_selected = VLC_FALSE;
1971 }
1972
1973 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1974                           mtime_t i_start )
1975 {
1976     uint32_t i_chunk;
1977     uint32_t i_sample;
1978
1979     if( !p_track->b_ok )
1980     {
1981         return( VLC_EGENERIC );
1982     }
1983
1984     p_track->b_selected = VLC_FALSE;
1985
1986     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1987                                 &i_chunk, &i_sample ) )
1988     {
1989         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1990                   p_track->i_track_ID );
1991         return( VLC_EGENERIC );
1992     }
1993
1994     p_track->b_selected = VLC_TRUE;
1995
1996     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
1997         VLC_SUCCESS )
1998     {
1999         p_track->b_selected = VLC_TRUE;
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     {
2131         /* we have reach end of the track so free decoder stuff */
2132         msg_Warn( p_demux, "track[0x%x] will be disabled", p_track->i_track_ID );
2133         MP4_TrackUnselect( p_demux, p_track );
2134         return VLC_EGENERIC;
2135     }
2136
2137     /* Have we changed chunk ? */
2138     if( p_track->i_sample >=
2139             p_track->chunk[p_track->i_chunk].i_sample_first +
2140             p_track->chunk[p_track->i_chunk].i_sample_count )
2141     {
2142         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2143                                   p_track->i_sample ) )
2144         {
2145             msg_Warn( p_demux, "track[0x%x] will be disabled "
2146                       "(cannot restart decoder)", p_track->i_track_ID );
2147             MP4_TrackUnselect( p_demux, p_track );
2148             return VLC_EGENERIC;
2149         }
2150     }
2151
2152     /* Have we changed elst */
2153     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2154     {
2155         demux_sys_t *p_sys = p_demux->p_sys;
2156         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2157         int64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2158                         p_sys->i_timescale / (int64_t)1000000;
2159
2160         if( p_track->i_elst < elst->i_entry_count &&
2161             i_mvt >= p_track->i_elst_time +
2162                      elst->i_segment_duration[p_track->i_elst] )
2163         {
2164             MP4_TrackSetELST( p_demux, p_track,
2165                               MP4_TrackGetDTS( p_demux, p_track ) );
2166         }
2167     }
2168
2169     return VLC_SUCCESS;
2170 }
2171
2172 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2173                               int64_t i_time )
2174 {
2175     demux_sys_t *p_sys = p_demux->p_sys;
2176     int         i_elst_last = tk->i_elst;
2177
2178     /* handle elst (find the correct one) */
2179     tk->i_elst      = 0;
2180     tk->i_elst_time = 0;
2181     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2182     {
2183         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2184         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2185
2186         for( tk->i_elst = 0; tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2187         {
2188             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2189
2190             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2191             {
2192                 break;
2193             }
2194             tk->i_elst_time += i_dur;
2195         }
2196
2197         if( tk->i_elst >= elst->i_entry_count )
2198         {
2199             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2200             tk->i_elst = elst->i_entry_count - 1;
2201             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2202         }
2203
2204         if( elst->i_media_time[tk->i_elst] < 0 )
2205         {
2206             /* track offset */
2207             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2208         }
2209     }
2210     if( i_elst_last != tk->i_elst )
2211     {
2212         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2213     }
2214 }