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