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

   1 /*****************************************************************************
   2  * mp4.c : MP4 file input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 the VideoLAN team
   5  * $Id$
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 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 <vlc_md5.h>
  32 #include "iso_lang.h"
  33 #include "vlc_meta.h"
  34
  35 #include "libmp4.h"
  36 #include "drms.h"
  37
  38 #ifdef UNDER_CE
  39 #define uint64_t int64_t
  40 #endif
  41
  42 /*****************************************************************************
  43  * Module descriptor
  44  *****************************************************************************/
  45 static int  Open ( vlc_object_t * );
  46 static void Close( vlc_object_t * );
  47
  48 vlc_module_begin();
  49     set_category( CAT_INPUT );
  50     set_subcategory( SUBCAT_INPUT_DEMUX );
  51     set_description( _("MP4 stream demuxer") );
  52     set_capability( "demux2", 242 );
  53     set_callbacks( Open, Close );
  54 vlc_module_end();
  55
  56 /*****************************************************************************
  57  * Local prototypes
  58  *****************************************************************************/
  59 static int   Demux   ( demux_t * );
  60 static int   DemuxRef( demux_t *p_demux ){ return 0;}
  61 static int   Seek    ( demux_t *, mtime_t );
  62 static int   Control ( demux_t *, int, va_list );
  63
  64 /* Contain all information about a chunk */
  65 typedef struct
  66 {
  67     uint64_t     i_offset; /* absolute position of this chunk in the file */
  68     uint32_t     i_sample_description_index; /* index for SampleEntry to use */
  69     uint32_t     i_sample_count; /* how many samples in this chunk */
  70     uint32_t     i_sample_first; /* index of the first sample in this chunk */
  71
  72     /* now provide way to calculate pts, dts, and offset without to
  73         much memory and with fast acces */
  74
  75     /* with this we can calculate dts/pts without waste memory */
  76     uint64_t     i_first_dts;
  77     uint32_t     *p_sample_count_dts;
  78     uint32_t     *p_sample_delta_dts;   /* dts delta */
  79
  80     uint32_t     *p_sample_count_pts;
  81     int32_t      *p_sample_offset_pts;  /* pts-dts */
  82
  83     /* TODO if needed add pts
  84         but quickly *add* support for edts and seeking */
  85
  86 } mp4_chunk_t;
  87
  88  /* Contain all needed information for read all track with vlc */
  89 typedef struct
  90 {
  91     int i_track_ID;     /* this should be unique */
  92
  93     int b_ok;           /* The track is usable */
  94     int b_enable;       /* is the trak enable by default */
  95     vlc_bool_t b_selected;     /* is the trak being played */
  96
  97     es_format_t fmt;
  98     es_out_id_t *p_es;
  99
 100     /* display size only ! */
 101     int i_width;
 102     int i_height;
 103
 104     /* more internal data */
 105     uint64_t        i_timescale;    /* time scale for this track only */
 106
 107     /* elst */
 108     int             i_elst;         /* current elst */
 109     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 110     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 111
 112     /* give the next sample to read, i_chunk is to find quickly where
 113       the sample is located */
 114     uint32_t         i_sample;       /* next sample to read */
 115     uint32_t         i_chunk;        /* chunk where next sample is stored */
 116     /* total count of chunk and sample */
 117     uint32_t         i_chunk_count;
 118     uint32_t         i_sample_count;
 119
 120     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 121
 122     /* sample size, p_sample_size defined only if i_sample_size == 0
 123         else i_sample_size is size for all sample */
 124     uint32_t         i_sample_size;
 125     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 126                                     too much time to do sumations each time*/
 127
 128     MP4_Box_t *p_stbl;  /* will contain all timing information */
 129     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 130     MP4_Box_t *p_sample;/* point on actual sdsd */
 131
 132     vlc_bool_t b_drms;
 133     void      *p_drms;
 134
 135 } mp4_track_t;
 136
 137
 138 struct demux_sys_t
 139 {
 140     MP4_Box_t    *p_root;      /* container for the whole file */
 141
 142     mtime_t      i_pcr;
 143
 144     uint64_t     i_time;        /* time position of the presentation
 145                                  * in movie timescale */
 146     uint64_t     i_timescale;   /* movie time scale */
 147     uint64_t     i_duration;    /* movie duration */
 148     unsigned int i_tracks;      /* number of tracks */
 149     mp4_track_t *track;    /* array of track */
 150 };
 151
 152 /*****************************************************************************
 153  * Declaration of local function
 154  *****************************************************************************/
 155 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 156 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 157
 158 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 159 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 160
 161 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 162
 163 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 164 static int      MP4_TrackSampleSize( mp4_track_t * );
 165 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 166 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 167
 168 /* Return time in s of a track */
 169 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 170 {
 171 #define chunk p_track->chunk[p_track->i_chunk]
 172
 173     unsigned int i_index = 0;
 174     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 175     int64_t i_dts = chunk.i_first_dts;
 176
 177     while( i_sample > 0 )
 178     {
 179         if( i_sample > chunk.p_sample_count_dts[i_index] )
 180         {
 181             i_dts += chunk.p_sample_count_dts[i_index] *
 182                 chunk.p_sample_delta_dts[i_index];
 183             i_sample -= chunk.p_sample_count_dts[i_index];
 184             i_index++;
 185         }
 186         else
 187         {
 188             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 189             i_sample = 0;
 190             break;
 191         }
 192     }
 193
 194 #undef chunk
 195
 196     /* now handle elst */
 197     if( p_track->p_elst )
 198     {
 199         demux_sys_t         *p_sys = p_demux->p_sys;
 200         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 201
 202         /* convert to offset */
 203         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 204               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 205             elst->i_media_time[p_track->i_elst] > 0 )
 206         {
 207             i_dts -= elst->i_media_time[p_track->i_elst];
 208         }
 209
 210         /* add i_elst_time */
 211         i_dts += p_track->i_elst_time * p_track->i_timescale /
 212             p_sys->i_timescale;
 213
 214         if( i_dts < 0 ) i_dts = 0;
 215     }
 216
 217     return I64C(1000000) * i_dts / p_track->i_timescale;
 218 }
 219
 220 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
 221 {
 222     mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
 223     unsigned int i_index = 0;
 224     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 225
 226     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 227         return -1;
 228
 229     for( i_index = 0;; i_index++ )
 230     {
 231         if( i_sample < ck->p_sample_count_pts[i_index] )
 232             return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
 233                    (int64_t)p_track->i_timescale;
 234
 235         i_sample -= ck->p_sample_count_pts[i_index];
 236     }
 237 }
 238
 239 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 240 {
 241     return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
 242 }
 243
 244 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
 245
 246 /*****************************************************************************
 247  * Open: check file and initializes MP4 structures
 248  *****************************************************************************/
 249 static int Open( vlc_object_t * p_this )
 250 {
 251     demux_t  *p_demux = (demux_t *)p_this;
 252     demux_sys_t     *p_sys;
 253
 254     uint8_t         *p_peek;
 255
 256     MP4_Box_t       *p_ftyp;
 257     MP4_Box_t       *p_rmra;
 258     MP4_Box_t       *p_mvhd;
 259     MP4_Box_t       *p_trak;
 260
 261     unsigned int    i;
 262     vlc_bool_t      b_seekable;
 263
 264     /* A little test to see if it could be a mp4 */
 265     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
 266
 267     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 268     {
 269         case FOURCC_ftyp:
 270         case FOURCC_moov:
 271         case FOURCC_foov:
 272         case FOURCC_moof:
 273         case FOURCC_mdat:
 274         case FOURCC_udta:
 275         case FOURCC_free:
 276         case FOURCC_skip:
 277         case FOURCC_wide:
 278         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 279             break;
 280          default:
 281             return VLC_EGENERIC;
 282     }
 283
 284     /* I need to seek */
 285     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 286     if( !b_seekable )
 287     {
 288         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 289         return VLC_EGENERIC;
 290     }
 291
 292     /*Set exported functions */
 293     p_demux->pf_demux = Demux;
 294     p_demux->pf_control = Control;
 295
 296     /* create our structure that will contains all data */
 297     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 298     memset( p_sys, 0, sizeof( demux_sys_t ) );
 299
 300     /* Now load all boxes ( except raw data ) */
 301     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 302     {
 303         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 304         goto error;
 305     }
 306
 307     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 308
 309     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 310     {
 311         switch( p_ftyp->data.p_ftyp->i_major_brand )
 312         {
 313             case( FOURCC_isom ):
 314                 msg_Dbg( p_demux,
 315                          "ISO Media file (isom) version %d.",
 316                          p_ftyp->data.p_ftyp->i_minor_version );
 317                 break;
 318             default:
 319                 msg_Dbg( p_demux,
 320                          "unrecognized major file specification (%4.4s).",
 321                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 322                 break;
 323         }
 324     }
 325     else
 326     {
 327         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 328     }
 329
 330     /* the file need to have one moov box */
 331     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 332     {
 333         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 334
 335         if( !p_foov )
 336         {
 337             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 338             goto error;
 339         }
 340         /* we have a free box as a moov, rename it */
 341         p_foov->i_type = FOURCC_moov;
 342     }
 343
 344     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 345     {
 346         playlist_t *p_playlist;
 347         playlist_item_t *p_item;
 348         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 349         int        i;
 350         vlc_bool_t b_play = VLC_FALSE;
 351
 352         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 353
 354         p_playlist =
 355             (playlist_t *)vlc_object_find( p_demux,
 356                                            VLC_OBJECT_PLAYLIST,
 357                                            FIND_ANYWHERE );
 358         if( p_playlist )
 359         {
 360             p_item = playlist_LockItemGetByInput( p_playlist,
 361                       ((input_thread_t *)p_demux->p_parent)->input.p_item );
 362             playlist_ItemToNode( p_playlist, p_item );
 363
 364             for( i = 0; i < i_count; i++ )
 365             {
 366                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 367                 char      *psz_ref;
 368                 uint32_t  i_ref_type;
 369
 370                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 371                 {
 372                     continue;
 373                 }
 374                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 375
 376                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 377                          psz_ref, (char*)&i_ref_type );
 378
 379                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 380                 {
 381                     if( strstr( psz_ref, "qt5gateQT" ) )
 382                     {
 383                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 384                         continue;
 385                     }
 386                     if( !strncmp( psz_ref, "http://", 7 ) ||
 387                         !strncmp( psz_ref, "rtsp://", 7 ) )
 388                     {
 389                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 390                         if( p_item )
 391                         {
 392                             playlist_item_t *p_child =
 393                                         playlist_ItemNew( p_playlist,
 394                                                           psz_ref, psz_ref );
 395                             if( p_child )
 396                             {
 397                                 playlist_NodeAddItem( p_playlist, p_child,
 398                                                  p_item->pp_parents[0]->i_view,
 399                                                  p_item, PLAYLIST_APPEND,
 400                                                  PLAYLIST_END );
 401                                 playlist_CopyParents( p_item, p_child );
 402                                 b_play = VLC_TRUE;
 403                             }
 404                         }
 405                     }
 406                     else
 407                     {
 408                         /* msg dbg relative ? */
 409                         char *psz_absolute = alloca( strlen( p_demux->psz_access ) + 3 + strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1);
 410                         char *end = strrchr( p_demux->psz_path, '/' );
 411
 412                         if( end )
 413                         {
 414                             int i_len = end + 1 - p_demux->psz_path;
 415
 416                             strcpy( psz_absolute, p_demux->psz_access );
 417                             strcat( psz_absolute, "://" );
 418                             strncat( psz_absolute, p_demux->psz_path, i_len);
 419                         }
 420                         else
 421                         {
 422                             strcpy( psz_absolute, "" );
 423                         }
 424                         strcat( psz_absolute, psz_ref );
 425                         msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
 426                         if( p_item )
 427                         {
 428                             playlist_item_t *p_child =
 429                                         playlist_ItemNew( p_playlist,
 430                                                           psz_absolute,
 431                                                           psz_absolute );
 432                             if( p_child )
 433                             {
 434                                 playlist_NodeAddItem( p_playlist, p_child,
 435                                                  p_item->pp_parents[0]->i_view,
 436                                                  p_item, PLAYLIST_APPEND,
 437                                                  PLAYLIST_END );
 438                                 playlist_CopyParents( p_item, p_child );
 439                                 b_play = VLC_TRUE;
 440                             }
 441                         }
 442                     }
 443                 }
 444                 else
 445                 {
 446                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 447                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 448                 }
 449             }
 450             if( b_play == VLC_TRUE )
 451             {
 452                  playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 453                                    p_playlist->status.i_view,
 454                                    p_playlist->status.p_item, NULL );
 455             }
 456             vlc_object_release( p_playlist );
 457         }
 458         else
 459         {
 460             msg_Err( p_demux, "can't find playlist" );
 461         }
 462     }
 463
 464     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 465     {
 466         if( !p_rmra )
 467         {
 468             msg_Err( p_demux, "cannot find /moov/mvhd" );
 469             goto error;
 470         }
 471         else
 472         {
 473             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 474             p_demux->pf_demux = DemuxRef;
 475             return VLC_SUCCESS;
 476         }
 477     }
 478     else
 479     {
 480         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 481         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 482     }
 483
 484     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 485     {
 486         msg_Err( p_demux, "cannot find any /moov/trak" );
 487         goto error;
 488     }
 489     msg_Dbg( p_demux, "find %d track%c",
 490                         p_sys->i_tracks,
 491                         p_sys->i_tracks ? 's':' ' );
 492
 493     /* allocate memory */
 494     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 495     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 496
 497     /* now process each track and extract all usefull information */
 498     for( i = 0; i < p_sys->i_tracks; i++ )
 499     {
 500         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 501         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 502
 503         if( p_sys->track[i].b_ok )
 504         {
 505             char *psz_cat;
 506             switch( p_sys->track[i].fmt.i_cat )
 507             {
 508                 case( VIDEO_ES ):
 509                     psz_cat = "video";
 510                     break;
 511                 case( AUDIO_ES ):
 512                     psz_cat = "audio";
 513                     break;
 514                 case( SPU_ES ):
 515                     psz_cat = "subtitle";
 516                     break;
 517
 518                 default:
 519                     psz_cat = "unknown";
 520                     break;
 521             }
 522
 523             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 524                      p_sys->track[i].i_track_ID, psz_cat,
 525                      p_sys->track[i].b_enable ? "enable":"disable",
 526                      p_sys->track[i].fmt.psz_language ?
 527                      p_sys->track[i].fmt.psz_language : "undef" );
 528         }
 529         else
 530         {
 531             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 532                      p_sys->track[i].i_track_ID );
 533         }
 534
 535     }
 536     return VLC_SUCCESS;
 537
 538 error:
 539     if( p_sys->p_root )
 540     {
 541         MP4_BoxFree( p_demux->s, p_sys->p_root );
 542     }
 543     free( p_sys );
 544     return VLC_EGENERIC;
 545 }
 546
 547 /*****************************************************************************
 548  * Demux: read packet and send them to decoders
 549  *****************************************************************************
 550  * TODO check for newly selected track (ie audio upt to now )
 551  *****************************************************************************/
 552 static int Demux( demux_t *p_demux )
 553 {
 554     demux_sys_t *p_sys = p_demux->p_sys;
 555     unsigned int i_track;
 556
 557
 558     unsigned int i_track_selected;
 559
 560     /* check for newly selected/unselected track */
 561     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 562          i_track++ )
 563     {
 564         mp4_track_t *tk = &p_sys->track[i_track];
 565         vlc_bool_t b;
 566
 567         if( !tk->b_ok ||
 568             ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
 569         {
 570             continue;
 571         }
 572
 573         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 574
 575         if( tk->b_selected && !b )
 576         {
 577             MP4_TrackUnselect( p_demux, tk );
 578         }
 579         else if( !tk->b_selected && b)
 580         {
 581             MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 582         }
 583
 584         if( tk->b_selected )
 585         {
 586             i_track_selected++;
 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 || tk->i_sample >= tk->i_sample_count )
 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 != -1 )
 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 create 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( int32_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     MP4_Box_t   *p_box;
1196
1197     *pp_es = NULL;
1198
1199     if( !p_track->chunk[i_chunk].i_sample_description_index )
1200     {
1201         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1202                   p_track->i_track_ID );
1203         return VLC_EGENERIC;
1204     }
1205
1206     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1207                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1208
1209     if( !p_sample ||
1210         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1211     {
1212         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1213                   p_track->i_track_ID );
1214         return VLC_EGENERIC;
1215     }
1216
1217     p_track->p_sample = p_sample;
1218
1219     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1220     {
1221         MP4_Box_data_sample_soun_t *p_soun;
1222
1223         p_soun = p_sample->data.p_sample_soun;
1224
1225         if( p_soun->i_qt_version == 0 )
1226         {
1227             switch( p_sample->i_type )
1228             {
1229                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1230                     p_soun->i_qt_version = 1;
1231                     p_soun->i_sample_per_packet = 64;
1232                     p_soun->i_bytes_per_packet  = 34;
1233                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1234                     p_soun->i_bytes_per_sample  = 2;
1235                     break;
1236                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1237                     p_soun->i_qt_version = 1;
1238                     p_soun->i_sample_per_packet = 6;
1239                     p_soun->i_bytes_per_packet  = 2;
1240                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1241                     p_soun->i_bytes_per_sample  = 2;
1242                     break;
1243                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1244                     p_soun->i_qt_version = 1;
1245                     p_soun->i_sample_per_packet = 12;
1246                     p_soun->i_bytes_per_packet  = 2;
1247                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1248                     p_soun->i_bytes_per_sample  = 2;
1249                     break;
1250                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1251                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1252                     p_soun->i_samplesize = 8;
1253                     break;
1254                 default:
1255                     break;
1256             }
1257
1258         }
1259         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1260         {
1261             p_soun->i_qt_version = 0;
1262         }
1263     }
1264
1265
1266     /* It's a little ugly but .. there are special cases */
1267     switch( p_sample->i_type )
1268     {
1269         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1270         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1271             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1272             break;
1273
1274         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1275             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1276
1277             /* Buggy files workaround */
1278             if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1279                 p_sample->data.p_sample_soun->i_sampleratehi) )
1280             {
1281                 MP4_Box_data_sample_soun_t *p_soun =
1282                     p_sample->data.p_sample_soun;
1283
1284                 msg_Warn( p_demux, "i_timescale ("I64Fu") != i_sampleratehi "
1285                           "(%u), making both equal (report any problem).",
1286                           p_track->i_timescale, p_soun->i_sampleratehi );
1287
1288                 if( p_soun->i_sampleratehi )
1289                     p_track->i_timescale = p_soun->i_sampleratehi;
1290                 else
1291                     p_soun->i_sampleratehi = p_track->i_timescale;
1292             }
1293             break;
1294
1295         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1296             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1297             break;
1298
1299         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1300         case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1301             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1302             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1303             /* FIXME UTF-8 doesn't work here ? */
1304             /* p_track->fmt.subs.psz_encoding = strdup( "UTF-8" ); */
1305             break;
1306
1307         default:
1308             p_track->fmt.i_codec = p_sample->i_type;
1309             break;
1310     }
1311
1312     /* now see if esds is present and if so create a data packet
1313         with decoder_specific_info  */
1314 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1315     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1316           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1317         ( p_esds->data.p_esds )&&
1318         ( p_decconfig ) )
1319     {
1320         /* First update information based on i_objectTypeIndication */
1321         switch( p_decconfig->i_objectTypeIndication )
1322         {
1323             case( 0x20 ): /* MPEG4 VIDEO */
1324                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1325                 break;
1326             case( 0x40):
1327                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1328                 break;
1329             case( 0x60):
1330             case( 0x61):
1331             case( 0x62):
1332             case( 0x63):
1333             case( 0x64):
1334             case( 0x65): /* MPEG2 video */
1335                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1336                 break;
1337             /* Theses are MPEG2-AAC */
1338             case( 0x66): /* main profile */
1339             case( 0x67): /* Low complexity profile */
1340             case( 0x68): /* Scaleable Sampling rate profile */
1341                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1342                 break;
1343             /* true MPEG 2 audio */
1344             case( 0x69):
1345                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1346                 break;
1347             case( 0x6a): /* MPEG1 video */
1348                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1349                 break;
1350             case( 0x6b): /* MPEG1 audio */
1351                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1352                 break;
1353             case( 0x6c ): /* jpeg */
1354                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1355                 break;
1356
1357             /* Private ID */
1358             case( 0xe0 ): /* NeroDigital: dvd subs */
1359                 if( p_track->fmt.i_cat == SPU_ES )
1360                 {
1361                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1362                     break;
1363                 }
1364             /* Fallback */
1365             default:
1366                 /* Unknown entry, but don't touch i_fourcc */
1367                 msg_Warn( p_demux,
1368                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1369                           p_decconfig->i_objectTypeIndication,
1370                           p_track->i_track_ID );
1371                 break;
1372         }
1373         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1374         if( p_track->fmt.i_extra > 0 )
1375         {
1376             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1377             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1378                     p_track->fmt.i_extra );
1379         }
1380     }
1381     else
1382     {
1383         switch( p_sample->i_type )
1384         {
1385             /* qt decoder, send the complete chunk */
1386             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1387             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1388             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1389             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1390             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1391                 p_track->fmt.i_extra =
1392                     p_sample->data.p_sample_vide->i_qt_image_description;
1393                 if( p_track->fmt.i_extra > 0 )
1394                 {
1395                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1396                     memcpy( p_track->fmt.p_extra,
1397                             p_sample->data.p_sample_vide->p_qt_image_description,
1398                             p_track->fmt.i_extra);
1399                 }
1400                 break;
1401             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1402             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1403             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1404             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1405             case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1406                 p_track->fmt.i_extra =
1407                     p_sample->data.p_sample_soun->i_qt_description;
1408                 if( p_track->fmt.i_extra > 0 )
1409                 {
1410                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1411                     memcpy( p_track->fmt.p_extra,
1412                             p_sample->data.p_sample_soun->p_qt_description,
1413                             p_track->fmt.i_extra);
1414                 }
1415                 break;
1416
1417             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1418             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1419             {
1420                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1421
1422                 if( p_avcC )
1423                 {
1424                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1425                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1426                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1427                             p_track->fmt.i_extra );
1428                 }
1429                 else
1430                 {
1431                     msg_Err( p_demux, "missing avcC" );
1432                 }
1433                 break;
1434             }
1435
1436             default:
1437                 break;
1438         }
1439     }
1440
1441 #undef p_decconfig
1442
1443     /* some last initialisation */
1444     switch( p_track->fmt.i_cat )
1445     {
1446     case( VIDEO_ES ):
1447         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1448         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1449         p_track->fmt.video.i_bits_per_pixel =
1450             p_sample->data.p_sample_vide->i_depth;
1451
1452         /* fall on display size */
1453         if( p_track->fmt.video.i_width <= 0 )
1454             p_track->fmt.video.i_width = p_track->i_width;
1455         if( p_track->fmt.video.i_height <= 0 )
1456             p_track->fmt.video.i_height = p_track->i_height;
1457
1458         /* Find out apect ratio from display size */
1459         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1460             /* Work-around buggy muxed files */
1461             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1462             p_track->fmt.video.i_aspect =
1463                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1464
1465         /* Frame rate */
1466         p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1467         p_track->fmt.video.i_frame_rate_base = 1;
1468
1469         if( p_track->fmt.video.i_frame_rate &&
1470             (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1471             p_box->data.p_stts->i_entry_count >= 1 )
1472         {
1473             p_track->fmt.video.i_frame_rate_base =
1474                 p_box->data.p_stts->i_sample_delta[0];
1475         }
1476
1477         break;
1478
1479     case( AUDIO_ES ):
1480         p_track->fmt.audio.i_channels =
1481             p_sample->data.p_sample_soun->i_channelcount;
1482         p_track->fmt.audio.i_rate =
1483             p_sample->data.p_sample_soun->i_sampleratehi;
1484         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1485             p_sample->data.p_sample_soun->i_sampleratehi *
1486                 p_sample->data.p_sample_soun->i_samplesize;
1487         p_track->fmt.audio.i_bitspersample =
1488             p_sample->data.p_sample_soun->i_samplesize;
1489         break;
1490
1491     default:
1492         break;
1493     }
1494
1495     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1496
1497     return VLC_SUCCESS;
1498 }
1499
1500 /* given a time it return sample/chunk
1501  * it also update elst field of the track
1502  */
1503 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1504                                    int64_t i_start, uint32_t *pi_chunk,
1505                                    uint32_t *pi_sample )
1506 {
1507     demux_sys_t *p_sys = p_demux->p_sys;
1508     MP4_Box_t   *p_stss;
1509     uint64_t     i_dts;
1510     unsigned int i_sample;
1511     unsigned int i_chunk;
1512     int          i_index;
1513
1514     /* FIXME see if it's needed to check p_track->i_chunk_count */
1515     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1516     {
1517         return( VLC_EGENERIC );
1518     }
1519
1520     /* handle elst (find the correct one) */
1521     MP4_TrackSetELST( p_demux, p_track, i_start );
1522     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1523     {
1524         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1525         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1526
1527         /* now calculate i_start for this elst */
1528         /* offset */
1529         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1530         if( i_start < 0 )
1531         {
1532             *pi_chunk = 0;
1533             *pi_sample= 0;
1534
1535             return VLC_SUCCESS;
1536         }
1537         /* to track time scale */
1538         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1539         /* add elst offset */
1540         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1541              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1542             elst->i_media_time[p_track->i_elst] > 0 )
1543         {
1544             i_start += elst->i_media_time[p_track->i_elst];
1545         }
1546
1547         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1548                  "ms (track)", p_track->i_elst,
1549                  i_mvt * 1000 / p_sys->i_timescale,
1550                  i_start * 1000 / p_track->i_timescale );
1551     }
1552     else
1553     {
1554         /* convert absolute time to in timescale unit */
1555         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1556     }
1557
1558     /* we start from sample 0/chunk 0, hope it won't take too much time */
1559     /* *** find good chunk *** */
1560     for( i_chunk = 0; ; i_chunk++ )
1561     {
1562         if( i_chunk + 1 >= p_track->i_chunk_count )
1563         {
1564             /* at the end and can't check if i_start in this chunk,
1565                it will be check while searching i_sample */
1566             i_chunk = p_track->i_chunk_count - 1;
1567             break;
1568         }
1569
1570         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1571             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1572         {
1573             break;
1574         }
1575     }
1576
1577     /* *** find sample in the chunk *** */
1578     i_sample = p_track->chunk[i_chunk].i_sample_first;
1579     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1580     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1581     {
1582         if( i_dts +
1583             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1584             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1585         {
1586             i_dts    +=
1587                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1588                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1589
1590             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1591             i_index++;
1592         }
1593         else
1594         {
1595             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1596             {
1597                 break;
1598             }
1599             i_sample += ( i_start - i_dts ) /
1600                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1601             break;
1602         }
1603     }
1604
1605     if( i_sample >= p_track->i_sample_count )
1606     {
1607         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1608                   "(seeking too far) chunk=%d sample=%d",
1609                   p_track->i_track_ID, i_chunk, i_sample );
1610         return( VLC_EGENERIC );
1611     }
1612
1613
1614     /* *** Try to find nearest sync points *** */
1615     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1616     {
1617         unsigned int i_index;
1618         msg_Dbg( p_demux,
1619                     "track[Id 0x%x] using Sync Sample Box (stss)",
1620                     p_track->i_track_ID );
1621         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1622         {
1623             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1624             {
1625                 if( i_index > 0 )
1626                 {
1627                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1628                             i_sample,
1629                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1630                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1631                     /* new i_sample is less than old so i_chunk can only decreased */
1632                     while( i_chunk > 0 &&
1633                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1634                     {
1635                         i_chunk--;
1636                     }
1637                 }
1638                 else
1639                 {
1640                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1641                             i_sample,
1642                             p_stss->data.p_stss->i_sample_number[i_index] );
1643                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1644                     /* new i_sample is more than old so i_chunk can only increased */
1645                     while( i_chunk < p_track->i_chunk_count - 1 &&
1646                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1647                              p_track->chunk[i_chunk].i_sample_count )
1648                     {
1649                         i_chunk++;
1650                     }
1651                 }
1652                 break;
1653             }
1654         }
1655     }
1656     else
1657     {
1658         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1659                  "Sample Box (stss)", p_track->i_track_ID );
1660     }
1661
1662     *pi_chunk  = i_chunk;
1663     *pi_sample = i_sample;
1664
1665     return VLC_SUCCESS;
1666 }
1667
1668 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1669                                  unsigned int i_chunk, unsigned int i_sample )
1670 {
1671     vlc_bool_t b_reselect = VLC_FALSE;
1672
1673     /* now see if actual es is ok */
1674     if( p_track->i_chunk < 0 ||
1675         p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1676         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1677             p_track->chunk[i_chunk].i_sample_description_index )
1678     {
1679         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1680                   p_track->i_track_ID );
1681
1682         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1683                         p_track->p_es, &b_reselect );
1684
1685         es_out_Del( p_demux->out, p_track->p_es );
1686
1687         p_track->p_es = NULL;
1688
1689         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1690         {
1691             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1692                      p_track->i_track_ID );
1693
1694             p_track->b_ok       = VLC_FALSE;
1695             p_track->b_selected = VLC_FALSE;
1696             return VLC_EGENERIC;
1697         }
1698     }
1699
1700     /* select again the new decoder */
1701     if( b_reselect )
1702     {
1703         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1704     }
1705
1706     p_track->i_chunk    = i_chunk;
1707     p_track->i_sample   = i_sample;
1708
1709     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1710 }
1711
1712 /****************************************************************************
1713  * MP4_TrackCreate:
1714  ****************************************************************************
1715  * Parse track information and create all needed data to run a track
1716  * If it succeed b_ok is set to 1 else to 0
1717  ****************************************************************************/
1718 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1719                              MP4_Box_t *p_box_trak )
1720 {
1721     demux_sys_t *p_sys = p_demux->p_sys;
1722
1723     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1724     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1725     MP4_Box_t *p_elst;
1726
1727     MP4_Box_t *p_mdhd;
1728     MP4_Box_t *p_udta;
1729     MP4_Box_t *p_hdlr;
1730
1731     MP4_Box_t *p_vmhd;
1732     MP4_Box_t *p_smhd;
1733
1734     MP4_Box_t *p_drms;
1735
1736     unsigned int i;
1737     char language[4];
1738
1739     /* hint track unsupported */
1740
1741     /* set default value (-> track unusable) */
1742     p_track->b_ok       = VLC_FALSE;
1743     p_track->b_enable   = VLC_FALSE;
1744     p_track->b_selected = VLC_FALSE;
1745
1746     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1747
1748     if( !p_tkhd )
1749     {
1750         return;
1751     }
1752
1753     /* do we launch this track by default ? */
1754     p_track->b_enable =
1755         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1756
1757     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1758     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1759     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1760
1761     if( p_tref )
1762     {
1763 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1764     }
1765
1766     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1767     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1768
1769     if( ( !p_mdhd )||( !p_hdlr ) )
1770     {
1771         return;
1772     }
1773
1774     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1775
1776     for( i = 0; i < 3; i++ )
1777     {
1778         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1779     }
1780     language[3] = '\0';
1781
1782     switch( p_hdlr->data.p_hdlr->i_handler_type )
1783     {
1784         case( FOURCC_soun ):
1785             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1786             {
1787                 return;
1788             }
1789             p_track->fmt.i_cat = AUDIO_ES;
1790             break;
1791
1792         case( FOURCC_vide ):
1793             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1794             {
1795                 return;
1796             }
1797             p_track->fmt.i_cat = VIDEO_ES;
1798             break;
1799
1800         case( FOURCC_text ):
1801         case( FOURCC_subp ):
1802         case( FOURCC_tx3g ):
1803             p_track->fmt.i_cat = SPU_ES;
1804             break;
1805
1806         default:
1807             return;
1808     }
1809
1810     p_track->i_elst = 0;
1811     p_track->i_elst_time = 0;
1812     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1813     {
1814         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1815         unsigned int i;
1816
1817         msg_Warn( p_demux, "elst box found" );
1818         for( i = 0; i < elst->i_entry_count; i++ )
1819         {
1820             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd
1821                      "ms) rate=%d.%d", i,
1822                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1823                      elst->i_media_time[i] >= 0 ?
1824                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
1825                      I64C(-1),
1826                      elst->i_media_rate_integer[i],
1827                      elst->i_media_rate_fraction[i] );
1828         }
1829     }
1830
1831
1832 /*  TODO
1833     add support for:
1834     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1835 */
1836     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1837         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1838     {
1839         return;
1840     }
1841
1842     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1843     p_track->b_drms = p_drms != NULL;
1844     p_track->p_drms = p_track->b_drms ?
1845         p_drms->data.p_sample_soun->p_drms : NULL;
1846
1847     /* Set language */
1848     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1849     {
1850         p_track->fmt.psz_language = strdup( language );
1851     }
1852
1853     p_udta = MP4_BoxGet( p_box_trak, "udta" );
1854     if( p_udta )
1855     {
1856         MP4_Box_t *p_0xa9xxx;
1857         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1858                  p_0xa9xxx = p_0xa9xxx->p_next )
1859         {
1860             switch( p_0xa9xxx->i_type )
1861             {
1862                 case FOURCC_0xa9nam:
1863                     p_track->fmt.psz_description =
1864                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1865                     break;
1866             }
1867         }
1868     }
1869
1870     /* Create chunk index table and sample index table */
1871     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1872         TrackCreateSamplesIndex( p_demux, p_track ) )
1873     {
1874         return; /* cannot create chunks index */
1875     }
1876
1877     p_track->i_chunk  = 0;
1878     p_track->i_sample = 0;
1879
1880     /* now create es */
1881     if( TrackCreateES( p_demux,
1882                        p_track, p_track->i_chunk,
1883                        &p_track->p_es ) )
1884     {
1885         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1886                  p_track->i_track_ID );
1887         return;
1888     }
1889
1890 #if 0
1891     {
1892         int i;
1893         for( i = 0; i < p_track->i_chunk_count; i++ )
1894         {
1895             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1896                      i, p_track->chunk[i].i_sample_count,
1897                      p_track->chunk[i].i_first_dts );
1898
1899         }
1900     }
1901 #endif
1902     p_track->b_ok = VLC_TRUE;
1903 }
1904
1905 /****************************************************************************
1906  * MP4_TrackDestroy:
1907  ****************************************************************************
1908  * Destroy a track created by MP4_TrackCreate.
1909  ****************************************************************************/
1910 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1911 {
1912     unsigned int i_chunk;
1913
1914     p_track->b_ok = VLC_FALSE;
1915     p_track->b_enable   = VLC_FALSE;
1916     p_track->b_selected = VLC_FALSE;
1917
1918     es_format_Clean( &p_track->fmt );
1919
1920     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1921     {
1922         if( p_track->chunk )
1923         {
1924            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1925            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1926
1927            FREE(p_track->chunk[i_chunk].p_sample_count_pts);
1928            FREE(p_track->chunk[i_chunk].p_sample_offset_pts );
1929         }
1930     }
1931     FREE( p_track->chunk );
1932
1933     if( !p_track->i_sample_size )
1934     {
1935         FREE( p_track->p_sample_size );
1936     }
1937 }
1938
1939 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1940                             mtime_t i_start )
1941 {
1942     if( !p_track->b_ok )
1943     {
1944         return VLC_EGENERIC;
1945     }
1946
1947     if( p_track->b_selected )
1948     {
1949         msg_Warn( p_demux, "track[Id 0x%x] already selected",
1950                   p_track->i_track_ID );
1951         return VLC_SUCCESS;
1952     }
1953
1954     return MP4_TrackSeek( p_demux, p_track, i_start );
1955 }
1956
1957 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1958 {
1959     if( !p_track->b_ok )
1960     {
1961         return;
1962     }
1963
1964     if( !p_track->b_selected )
1965     {
1966         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1967                   p_track->i_track_ID );
1968         return;
1969     }
1970     if( p_track->p_es )
1971     {
1972         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1973                         p_track->p_es, VLC_FALSE );
1974     }
1975
1976     p_track->b_selected = VLC_FALSE;
1977 }
1978
1979 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1980                           mtime_t i_start )
1981 {
1982     uint32_t i_chunk;
1983     uint32_t i_sample;
1984
1985     if( !p_track->b_ok )
1986     {
1987         return( VLC_EGENERIC );
1988     }
1989
1990     p_track->b_selected = VLC_FALSE;
1991
1992     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1993                                 &i_chunk, &i_sample ) )
1994     {
1995         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1996                   p_track->i_track_ID );
1997         return( VLC_EGENERIC );
1998     }
1999
2000     p_track->b_selected = VLC_TRUE;
2001
2002     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2003         VLC_SUCCESS )
2004     {
2005         p_track->b_selected = VLC_TRUE;
2006
2007         es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
2008                         p_track->p_es, i_start );
2009     }
2010
2011     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2012 }
2013
2014
2015 /*
2016  * 3 types: for audio
2017  *
2018  */
2019 #define QT_V0_MAX_SAMPLES 1024
2020 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2021 {
2022     int i_size;
2023     MP4_Box_data_sample_soun_t *p_soun;
2024
2025     if( p_track->i_sample_size == 0 )
2026     {
2027         /* most simple case */
2028         return p_track->p_sample_size[p_track->i_sample];
2029     }
2030     if( p_track->fmt.i_cat != AUDIO_ES )
2031     {
2032         return p_track->i_sample_size;
2033     }
2034
2035     p_soun = p_track->p_sample->data.p_sample_soun;
2036
2037     if( p_soun->i_qt_version == 1 )
2038     {
2039         i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2040             p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2041     }
2042     else if( p_track->i_sample_size > 256 )
2043     {
2044         /* We do that so we don't read too much data
2045          * (in this case we are likely dealing with compressed data) */
2046         i_size = p_track->i_sample_size;
2047     }
2048     else
2049     {
2050         /* Read a bunch of samples at once */
2051         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2052             ( p_track->i_sample -
2053               p_track->chunk[p_track->i_chunk].i_sample_first );
2054
2055         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2056         i_size = i_samples * p_track->i_sample_size;
2057     }
2058
2059     //fprintf( stderr, "size=%d\n", i_size );
2060     return i_size;
2061 }
2062
2063 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2064 {
2065     unsigned int i_sample;
2066     uint64_t i_pos;
2067
2068     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2069
2070     if( p_track->i_sample_size )
2071     {
2072         MP4_Box_data_sample_soun_t *p_soun =
2073             p_track->p_sample->data.p_sample_soun;
2074
2075         if( p_soun->i_qt_version == 0 )
2076         {
2077             i_pos += ( p_track->i_sample -
2078                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
2079                      p_track->i_sample_size;
2080         }
2081         else
2082         {
2083             /* we read chunk by chunk */
2084             i_pos += 0;
2085         }
2086     }
2087     else
2088     {
2089         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2090              i_sample < p_track->i_sample; i_sample++ )
2091         {
2092             i_pos += p_track->p_sample_size[i_sample];
2093         }
2094     }
2095
2096     return i_pos;
2097 }
2098
2099 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2100 {
2101     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2102     {
2103         MP4_Box_data_sample_soun_t *p_soun;
2104
2105         p_soun = p_track->p_sample->data.p_sample_soun;
2106
2107         if( p_soun->i_qt_version == 1 )
2108         {
2109             /* chunk by chunk */
2110             p_track->i_sample =
2111                 p_track->chunk[p_track->i_chunk].i_sample_first +
2112                 p_track->chunk[p_track->i_chunk].i_sample_count;
2113         }
2114         else if( p_track->i_sample_size > 256 )
2115         {
2116             /* We do that so we don't read too much data
2117              * (in this case we are likely dealing with compressed data) */
2118             p_track->i_sample += 1;
2119         }
2120         else
2121         {
2122             /* FIXME */
2123             p_track->i_sample += QT_V0_MAX_SAMPLES;
2124             if( p_track->i_sample >
2125                 p_track->chunk[p_track->i_chunk].i_sample_first +
2126                 p_track->chunk[p_track->i_chunk].i_sample_count )
2127             {
2128                 p_track->i_sample =
2129                     p_track->chunk[p_track->i_chunk].i_sample_first +
2130                     p_track->chunk[p_track->i_chunk].i_sample_count;
2131             }
2132         }
2133     }
2134     else
2135     {
2136         p_track->i_sample++;
2137     }
2138
2139     if( p_track->i_sample >= p_track->i_sample_count )
2140         return VLC_EGENERIC;
2141
2142     /* Have we changed chunk ? */
2143     if( p_track->i_sample >=
2144             p_track->chunk[p_track->i_chunk].i_sample_first +
2145             p_track->chunk[p_track->i_chunk].i_sample_count )
2146     {
2147         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2148                                   p_track->i_sample ) )
2149         {
2150             msg_Warn( p_demux, "track[0x%x] will be disabled "
2151                       "(cannot restart decoder)", p_track->i_track_ID );
2152             MP4_TrackUnselect( p_demux, p_track );
2153             return VLC_EGENERIC;
2154         }
2155     }
2156
2157     /* Have we changed elst */
2158     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2159     {
2160         demux_sys_t *p_sys = p_demux->p_sys;
2161         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2162         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2163                         p_sys->i_timescale / (int64_t)1000000;
2164
2165         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2166             i_mvt >= p_track->i_elst_time +
2167                      elst->i_segment_duration[p_track->i_elst] )
2168         {
2169             MP4_TrackSetELST( p_demux, p_track,
2170                               MP4_TrackGetDTS( p_demux, p_track ) );
2171         }
2172     }
2173
2174     return VLC_SUCCESS;
2175 }
2176
2177 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2178                               int64_t i_time )
2179 {
2180     demux_sys_t *p_sys = p_demux->p_sys;
2181     int         i_elst_last = tk->i_elst;
2182
2183     /* handle elst (find the correct one) */
2184     tk->i_elst      = 0;
2185     tk->i_elst_time = 0;
2186     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2187     {
2188         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2189         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2190
2191         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2192         {
2193             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2194
2195             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2196             {
2197                 break;
2198             }
2199             tk->i_elst_time += i_dur;
2200         }
2201
2202         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2203         {
2204             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2205             tk->i_elst = elst->i_entry_count - 1;
2206             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2207         }
2208
2209         if( elst->i_media_time[tk->i_elst] < 0 )
2210         {
2211             /* track offset */
2212             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2213         }
2214     }
2215     if( i_elst_last != tk->i_elst )
2216     {
2217         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2218     }
2219 }