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     /* TODO if needed add pts
  80         but quickly *add* support for edts and seeking */
  81
  82 } mp4_chunk_t;
  83
  84  /* Contain all needed information for read all track with vlc */
  85 typedef struct
  86 {
  87     int i_track_ID;     /* this should be unique */
  88
  89     int b_ok;           /* The track is usable */
  90     int b_enable;       /* is the trak enable by default */
  91     vlc_bool_t b_selected;     /* is the trak being played */
  92
  93     es_format_t fmt;
  94     es_out_id_t *p_es;
  95
  96     /* display size only ! */
  97     int i_width;
  98     int i_height;
  99
 100     /* more internal data */
 101     uint64_t        i_timescale;    /* time scale for this track only */
 102
 103     /* elst */
 104     int             i_elst;         /* current elst */
 105     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 106     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 107
 108     /* give the next sample to read, i_chunk is to find quickly where
 109       the sample is located */
 110     uint32_t         i_sample;       /* next sample to read */
 111     uint32_t         i_chunk;        /* chunk where next sample is stored */
 112     /* total count of chunk and sample */
 113     uint32_t         i_chunk_count;
 114     uint32_t         i_sample_count;
 115
 116     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 117
 118     /* sample size, p_sample_size defined only if i_sample_size == 0
 119         else i_sample_size is size for all sample */
 120     uint32_t         i_sample_size;
 121     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 122                                     too much time to do sumations each time*/
 123
 124     MP4_Box_t *p_stbl;  /* will contain all timing information */
 125     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 126     MP4_Box_t *p_sample;/* point on actual sdsd */
 127
 128     vlc_bool_t b_drms;
 129     void      *p_drms;
 130
 131 } mp4_track_t;
 132
 133
 134 struct demux_sys_t
 135 {
 136     MP4_Box_t    *p_root;      /* container for the whole file */
 137
 138     mtime_t      i_pcr;
 139
 140     uint64_t     i_time;        /* time position of the presentation
 141                                  * in movie timescale */
 142     uint64_t     i_timescale;   /* movie time scale */
 143     uint64_t     i_duration;    /* movie duration */
 144     unsigned int i_tracks;      /* number of tracks */
 145     mp4_track_t *track;    /* array of track */
 146 };
 147
 148 /*****************************************************************************
 149  * Declaration of local function
 150  *****************************************************************************/
 151 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 152 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 153
 154 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 155 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 156
 157 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 158
 159 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 160 static int      MP4_TrackSampleSize( mp4_track_t * );
 161 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 162 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 163
 164 /* Return time in µs of a track */
 165 static inline int64_t MP4_TrackGetPTS( demux_t *p_demux, mp4_track_t *p_track )
 166 {
 167 #define chunk p_track->chunk[p_track->i_chunk]
 168
 169     unsigned int i_index = 0;
 170     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 171     int64_t i_dts = chunk.i_first_dts;
 172
 173     while( i_sample > 0 )
 174     {
 175         if( i_sample > chunk.p_sample_count_dts[i_index] )
 176         {
 177             i_dts += chunk.p_sample_count_dts[i_index] *
 178                 chunk.p_sample_delta_dts[i_index];
 179             i_sample -= chunk.p_sample_count_dts[i_index];
 180             i_index++;
 181         }
 182         else
 183         {
 184             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 185             i_sample = 0;
 186             break;
 187         }
 188     }
 189
 190 #undef chunk
 191
 192     /* now handle elst */
 193     if( p_track->p_elst )
 194     {
 195         demux_sys_t         *p_sys = p_demux->p_sys;
 196         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 197
 198         /* convert to offset */
 199         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 200               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 201             elst->i_media_time[p_track->i_elst] > 0 )
 202         {
 203             i_dts -= elst->i_media_time[p_track->i_elst];
 204         }
 205
 206         /* add i_elst_time */
 207         i_dts += p_track->i_elst_time * p_track->i_timescale /
 208             p_sys->i_timescale;
 209
 210         if( i_dts < 0 ) i_dts = 0;
 211     }
 212
 213     return I64C(1000000) * i_dts / p_track->i_timescale;
 214 }
 215
 216 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 217 {
 218     return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
 219 }
 220
 221 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
 222
 223 /*****************************************************************************
 224  * Open: check file and initializes MP4 structures
 225  *****************************************************************************/
 226 static int Open( vlc_object_t * p_this )
 227 {
 228     demux_t  *p_demux = (demux_t *)p_this;
 229     demux_sys_t     *p_sys;
 230
 231     uint8_t         *p_peek;
 232
 233     MP4_Box_t       *p_ftyp;
 234     MP4_Box_t       *p_rmra;
 235     MP4_Box_t       *p_mvhd;
 236     MP4_Box_t       *p_trak;
 237
 238     unsigned int    i;
 239     vlc_bool_t      b_seekable;
 240
 241     /* a little test to see if it could be a mp4 */
 242     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
 243     {
 244         msg_Warn( p_demux, "MP4 plugin discarded (cannot peek)" );
 245         return VLC_EGENERIC;
 246     }
 247     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 248     {
 249         case FOURCC_ftyp:
 250         case FOURCC_moov:
 251         case FOURCC_foov:
 252         case FOURCC_moof:
 253         case FOURCC_mdat:
 254         case FOURCC_udta:
 255         case FOURCC_free:
 256         case FOURCC_skip:
 257         case FOURCC_wide:
 258         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 259             break;
 260          default:
 261             msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 262             return VLC_EGENERIC;
 263     }
 264
 265     /* I need to seek */
 266     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 267     if( !b_seekable )
 268     {
 269         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 270         return VLC_EGENERIC;
 271     }
 272
 273     /*Set exported functions */
 274     p_demux->pf_demux = Demux;
 275     p_demux->pf_control = Control;
 276
 277     /* create our structure that will contains all data */
 278     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 279     memset( p_sys, 0, sizeof( demux_sys_t ) );
 280
 281     /* Now load all boxes ( except raw data ) */
 282     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 283     {
 284         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 285         goto error;
 286     }
 287
 288     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 289
 290     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 291     {
 292         switch( p_ftyp->data.p_ftyp->i_major_brand )
 293         {
 294             case( FOURCC_isom ):
 295                 msg_Dbg( p_demux,
 296                          "ISO Media file (isom) version %d.",
 297                          p_ftyp->data.p_ftyp->i_minor_version );
 298                 break;
 299             default:
 300                 msg_Dbg( p_demux,
 301                          "unrecognized major file specification (%4.4s).",
 302                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 303                 break;
 304         }
 305     }
 306     else
 307     {
 308         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 309     }
 310
 311     /* the file need to have one moov box */
 312     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 313     {
 314         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 315
 316         if( !p_foov )
 317         {
 318             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 319             goto error;
 320         }
 321         /* we have a free box as a moov, rename it */
 322         p_foov->i_type = FOURCC_moov;
 323     }
 324
 325     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 326     {
 327         playlist_t *p_playlist;
 328         playlist_item_t *p_item;
 329         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 330         int        i;
 331         vlc_bool_t b_play = VLC_FALSE;
 332
 333         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 334
 335         p_playlist =
 336             (playlist_t *)vlc_object_find( p_demux,
 337                                            VLC_OBJECT_PLAYLIST,
 338                                            FIND_ANYWHERE );
 339         if( p_playlist )
 340         {
 341             p_item = playlist_ItemGetByInput( p_playlist,
 342                       ((input_thread_t *)p_demux->p_parent)->input.p_item );
 343             playlist_ItemToNode( p_playlist, p_item );
 344
 345             for( i = 0; i < i_count; i++ )
 346             {
 347                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 348                 char      *psz_ref;
 349                 uint32_t  i_ref_type;
 350
 351                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 352                 {
 353                     continue;
 354                 }
 355                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 356
 357                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 358                          psz_ref, (char*)&i_ref_type );
 359
 360                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 361                 {
 362                     if( strstr( psz_ref, "qt5gateQT" ) )
 363                     {
 364                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 365                         continue;
 366                     }
 367                     if( !strncmp( psz_ref, "http://", 7 ) ||
 368                         !strncmp( psz_ref, "rtsp://", 7 ) )
 369                     {
 370                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 371                         if( p_item )
 372                         {
 373                             playlist_item_t *p_child =
 374                                         playlist_ItemNew( p_playlist,
 375                                                           psz_ref, psz_ref );
 376                             if( p_child )
 377                             {
 378                                 playlist_NodeAddItem( p_playlist, p_child,
 379                                                  p_item->pp_parents[0]->i_view,
 380                                                  p_item, PLAYLIST_APPEND,
 381                                                  PLAYLIST_END );
 382                                 playlist_CopyParents( p_item, p_child );
 383                                 b_play = VLC_TRUE;
 384                             }
 385                         }
 386                     }
 387                     else
 388                     {
 389                         /* msg dbg relative ? */
 390                         char *psz_absolute = alloca( strlen( p_demux->psz_access ) + 3 + strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1);
 391                         char *end = strrchr( p_demux->psz_path, '/' );
 392
 393                         if( end )
 394                         {
 395                             int i_len = end + 1 - p_demux->psz_path;
 396
 397                             strcpy( psz_absolute, p_demux->psz_access );
 398                             strcat( psz_absolute, "://" );
 399                             strncat( psz_absolute, p_demux->psz_path, i_len);
 400                         }
 401                         else
 402                         {
 403                             strcpy( psz_absolute, "" );
 404                         }
 405                         strcat( psz_absolute, psz_ref );
 406                         msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
 407                         if( p_item )
 408                         {
 409                             playlist_item_t *p_child =
 410                                         playlist_ItemNew( p_playlist,
 411                                                           psz_absolute,
 412                                                           psz_absolute );
 413                             if( p_child )
 414                             {
 415                                 playlist_NodeAddItem( p_playlist, p_child,
 416                                                  p_item->pp_parents[0]->i_view,
 417                                                  p_item, PLAYLIST_APPEND,
 418                                                  PLAYLIST_END );
 419                                 playlist_CopyParents( p_item, p_child );
 420                                 b_play = VLC_TRUE;
 421                             }
 422                         }
 423                     }
 424                 }
 425                 else
 426                 {
 427                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 428                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 429                 }
 430             }
 431             if( b_play == VLC_TRUE )
 432             {
 433                  playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 434                                    p_playlist->status.i_view,
 435                                    p_playlist->status.p_item, NULL );
 436             }
 437             vlc_object_release( p_playlist );
 438         }
 439         else
 440         {
 441             msg_Err( p_demux, "can't find playlist" );
 442         }
 443     }
 444
 445     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 446     {
 447         if( !p_rmra )
 448         {
 449             msg_Err( p_demux, "cannot find /moov/mvhd" );
 450             goto error;
 451         }
 452         else
 453         {
 454             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 455             p_demux->pf_demux = DemuxRef;
 456             return VLC_SUCCESS;
 457         }
 458     }
 459     else
 460     {
 461         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 462         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 463     }
 464
 465     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 466     {
 467         msg_Err( p_demux, "cannot find any /moov/trak" );
 468         goto error;
 469     }
 470     msg_Dbg( p_demux, "find %d track%c",
 471                         p_sys->i_tracks,
 472                         p_sys->i_tracks ? 's':' ' );
 473
 474     /* allocate memory */
 475     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 476     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 477
 478     /* now process each track and extract all usefull information */
 479     for( i = 0; i < p_sys->i_tracks; i++ )
 480     {
 481         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 482         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 483
 484         if( p_sys->track[i].b_ok )
 485         {
 486             char *psz_cat;
 487             switch( p_sys->track[i].fmt.i_cat )
 488             {
 489                 case( VIDEO_ES ):
 490                     psz_cat = "video";
 491                     break;
 492                 case( AUDIO_ES ):
 493                     psz_cat = "audio";
 494                     break;
 495                 case( SPU_ES ):
 496                     psz_cat = "subtitle";
 497                     break;
 498
 499                 default:
 500                     psz_cat = "unknown";
 501                     break;
 502             }
 503
 504             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 505                      p_sys->track[i].i_track_ID, psz_cat,
 506                      p_sys->track[i].b_enable ? "enable":"disable",
 507                      p_sys->track[i].fmt.psz_language ?
 508                      p_sys->track[i].fmt.psz_language : "undef" );
 509         }
 510         else
 511         {
 512             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 513                      p_sys->track[i].i_track_ID );
 514         }
 515
 516     }
 517     return VLC_SUCCESS;
 518
 519 error:
 520     if( p_sys->p_root )
 521     {
 522         MP4_BoxFree( p_demux->s, p_sys->p_root );
 523     }
 524     free( p_sys );
 525     return VLC_EGENERIC;
 526 }
 527
 528 /*****************************************************************************
 529  * Demux: read packet and send them to decoders
 530  *****************************************************************************
 531  * TODO check for newly selected track (ie audio upt to now )
 532  *****************************************************************************/
 533 static int Demux( demux_t *p_demux )
 534 {
 535     demux_sys_t *p_sys = p_demux->p_sys;
 536     unsigned int i_track;
 537
 538
 539     unsigned int i_track_selected;
 540
 541     /* check for newly selected/unselected track */
 542     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 543          i_track++ )
 544     {
 545         mp4_track_t *tk = &p_sys->track[i_track];
 546
 547         if( tk->b_selected && tk->i_sample >= tk->i_sample_count )
 548         {
 549             msg_Warn( p_demux, "track[0x%x] will be disabled", tk->i_track_ID );
 550             MP4_TrackUnselect( p_demux, tk);
 551         }
 552         else if( tk->b_ok )
 553         {
 554             vlc_bool_t b;
 555             es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 556
 557             if( tk->b_selected && !b )
 558             {
 559                 MP4_TrackUnselect( p_demux, tk );
 560             }
 561             else if( !tk->b_selected && b)
 562             {
 563                 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 564             }
 565
 566             if( tk->b_selected )
 567             {
 568                 i_track_selected++;
 569             }
 570         }
 571     }
 572
 573     if( i_track_selected <= 0 )
 574     {
 575         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 576         if( p_sys->i_timescale > 0 )
 577         {
 578             int64_t i_length = (mtime_t)1000000 *
 579                                (mtime_t)p_sys->i_duration /
 580                                (mtime_t)p_sys->i_timescale;
 581             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 582                 return 0;
 583             return 1;
 584         }
 585
 586         msg_Warn( p_demux, "no track selected, exiting..." );
 587         return 0;
 588     }
 589
 590     /* first wait for the good time to read a packet */
 591     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
 592
 593     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 594
 595     /* we will read 100ms for each stream so ...*/
 596     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 597
 598     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 599     {
 600         mp4_track_t *tk = &p_sys->track[i_track];
 601
 602         if( !tk->b_ok || !tk->b_selected )
 603         {
 604             continue;
 605         }
 606
 607         while( MP4_TrackGetPTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 608         {
 609 #if 0
 610             msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
 611                      MP4_TrackGetPTS( p_demux, tk ),
 612                      MP4_GetMoviePTS( p_sys ) );
 613 #endif
 614
 615             if( MP4_TrackSampleSize( tk ) > 0 )
 616             {
 617                 block_t *p_block;
 618
 619                 /* go,go go ! */
 620                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 621                 {
 622                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 623                               tk->i_track_ID );
 624                     MP4_TrackUnselect( p_demux, tk );
 625                     break;
 626                 }
 627
 628                 /* now read pes */
 629                 if( !(p_block =
 630                          stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
 631                 {
 632                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 633                               tk->i_track_ID );
 634                     MP4_TrackUnselect( p_demux, tk );
 635                     break;
 636                 }
 637
 638                 if( tk->b_drms && tk->p_drms )
 639                 {
 640                     drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
 641                                   p_block->i_buffer );
 642                 }
 643                 else if( tk->fmt.i_cat == SPU_ES )
 644                 {
 645                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
 646                         p_block->i_buffer >= 2 )
 647                     {
 648                         uint16_t i_size = GetWBE( p_block->p_buffer );
 649
 650                         if( i_size + 2 <= p_block->i_buffer )
 651                         {
 652                             char *p;
 653                             /* remove the length field, and append a '\0' */
 654                             memmove( &p_block->p_buffer[0],
 655                                      &p_block->p_buffer[2], i_size );
 656                             p_block->p_buffer[i_size] = '\0';
 657                             p_block->i_buffer = i_size + 1;
 658
 659                             /* convert \r -> \n */
 660                             while( ( p = strchr( p_block->p_buffer, '\r' ) ) )
 661                             {
 662                                 *p = '\n';
 663                             }
 664                         }
 665                         else
 666                         {
 667                             /* Invalid */
 668                             p_block->i_buffer = 0;
 669                         }
 670                     }
 671                 }
 672                 p_block->i_dts = MP4_TrackGetPTS( p_demux, tk ) + 1;
 673
 674                 p_block->i_pts = tk->fmt.i_cat == VIDEO_ES ?
 675                     0 : p_block->i_dts + 1;
 676
 677                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 678                 {
 679                     es_out_Send( p_demux->out, tk->p_es, p_block );
 680                 }
 681             }
 682
 683             /* Next sample */
 684             if( MP4_TrackNextSample( p_demux, tk ) )
 685             {
 686                 break;
 687             }
 688         }
 689     }
 690
 691     return 1;
 692 }
 693 /*****************************************************************************
 694  * Seek: Got to i_date
 695 ******************************************************************************/
 696 static int Seek( demux_t *p_demux, mtime_t i_date )
 697 {
 698     demux_sys_t *p_sys = p_demux->p_sys;
 699     unsigned int i_track;
 700
 701     /* First update update global time */
 702     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 703     p_sys->i_pcr  = i_date;
 704
 705     /* Now for each stream try to go to this time */
 706     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 707     {
 708         mp4_track_t *tk = &p_sys->track[i_track];
 709         MP4_TrackSeek( p_demux, tk, i_date );
 710     }
 711     return VLC_SUCCESS;
 712 }
 713
 714 /*****************************************************************************
 715  * Control:
 716  *****************************************************************************/
 717 static int Control( demux_t *p_demux, int i_query, va_list args )
 718 {
 719     demux_sys_t *p_sys = p_demux->p_sys;
 720
 721     double f, *pf;
 722     int64_t i64, *pi64;
 723
 724     switch( i_query )
 725     {
 726         case DEMUX_GET_POSITION:
 727             pf = (double*)va_arg( args, double * );
 728             if( p_sys->i_duration > 0 )
 729             {
 730                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 731             }
 732             else
 733             {
 734                 *pf = 0.0;
 735             }
 736             return VLC_SUCCESS;
 737
 738         case DEMUX_SET_POSITION:
 739             f = (double)va_arg( args, double );
 740             if( p_sys->i_timescale > 0 )
 741             {
 742                 i64 = (int64_t)( f * (double)1000000 *
 743                                  (double)p_sys->i_duration /
 744                                  (double)p_sys->i_timescale );
 745                 return Seek( p_demux, i64 );
 746             }
 747             else return VLC_SUCCESS;
 748
 749         case DEMUX_GET_TIME:
 750             pi64 = (int64_t*)va_arg( args, int64_t * );
 751             if( p_sys->i_timescale > 0 )
 752             {
 753                 *pi64 = (mtime_t)1000000 *
 754                         (mtime_t)p_sys->i_time /
 755                         (mtime_t)p_sys->i_timescale;
 756             }
 757             else *pi64 = 0;
 758             return VLC_SUCCESS;
 759
 760         case DEMUX_SET_TIME:
 761             i64 = (int64_t)va_arg( args, int64_t );
 762             return Seek( p_demux, i64 );
 763
 764         case DEMUX_GET_LENGTH:
 765             pi64 = (int64_t*)va_arg( args, int64_t * );
 766             if( p_sys->i_timescale > 0 )
 767             {
 768                 *pi64 = (mtime_t)1000000 *
 769                         (mtime_t)p_sys->i_duration /
 770                         (mtime_t)p_sys->i_timescale;
 771             }
 772             else *pi64 = 0;
 773             return VLC_SUCCESS;
 774
 775         case DEMUX_GET_FPS:
 776             msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
 777             return VLC_EGENERIC;
 778
 779         case DEMUX_GET_META:
 780         {
 781             vlc_meta_t **pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
 782             vlc_meta_t *meta;
 783             MP4_Box_t  *p_udta   = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 784             MP4_Box_t  *p_0xa9xxx;
 785             if( p_udta == NULL )
 786             {
 787                 return VLC_EGENERIC;
 788             }
 789             *pp_meta = meta = vlc_meta_New();
 790             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 791                  p_0xa9xxx = p_0xa9xxx->p_next )
 792             {
 793                 switch( p_0xa9xxx->i_type )
 794                 {
 795                 case FOURCC_0xa9nam: /* Full name */
 796                     vlc_meta_Add( meta, VLC_META_TITLE,
 797                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 798                     break;
 799                 case FOURCC_0xa9aut:
 800                     vlc_meta_Add( meta, VLC_META_AUTHOR,
 801                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 802                     break;
 803                 case FOURCC_0xa9ART:
 804                     vlc_meta_Add( meta, VLC_META_ARTIST,
 805                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 806                     break;
 807                 case FOURCC_0xa9cpy:
 808                     vlc_meta_Add( meta, VLC_META_COPYRIGHT,
 809                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 810                     break;
 811                 case FOURCC_0xa9day: /* Creation Date */
 812                     vlc_meta_Add( meta, VLC_META_DATE,
 813                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 814                     break;
 815                 case FOURCC_0xa9des: /* Description */
 816                     vlc_meta_Add( meta, VLC_META_DESCRIPTION,
 817                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 818                     break;
 819                 case FOURCC_0xa9gen: /* Genre */
 820                     vlc_meta_Add( meta, VLC_META_GENRE,
 821                                   p_0xa9xxx->data.p_0xa9xxx->psz_text );
 822                     break;
 823
 824                 case FOURCC_0xa9swr:
 825                 case FOURCC_0xa9inf: /* Information */
 826                 case FOURCC_0xa9alb: /* Album */
 827                 case FOURCC_0xa9dir: /* Director */
 828                 case FOURCC_0xa9dis: /* Disclaimer */
 829                 case FOURCC_0xa9enc: /* Encoded By */
 830                 case FOURCC_0xa9trk: /* Track */
 831                 case FOURCC_0xa9cmt: /* Commment */
 832                 case FOURCC_0xa9url: /* URL */
 833                 case FOURCC_0xa9req: /* Requirements */
 834                 case FOURCC_0xa9fmt: /* Original Format */
 835                 case FOURCC_0xa9dsa: /* Display Source As */
 836                 case FOURCC_0xa9hst: /* Host Computer */
 837                 case FOURCC_0xa9prd: /* Producer */
 838                 case FOURCC_0xa9prf: /* Performers */
 839                 case FOURCC_0xa9ope: /* Original Performer */
 840                 case FOURCC_0xa9src: /* Providers Source Content */
 841                 case FOURCC_0xa9wrt: /* Writer */
 842                 case FOURCC_0xa9com: /* Composer */
 843                 case FOURCC_WLOC:    /* Window Location */
 844                     /* TODO one day, but they aren't really meaningfull */
 845                     break;
 846
 847                 default:
 848                     break;
 849                 }
 850             }
 851             return VLC_SUCCESS;
 852         }
 853
 854         case DEMUX_GET_TITLE_INFO:
 855         case DEMUX_SET_NEXT_DEMUX_TIME:
 856         case DEMUX_SET_GROUP:
 857             return VLC_EGENERIC;
 858
 859         default:
 860             msg_Warn( p_demux, "control query unimplemented !!!" );
 861             return VLC_EGENERIC;
 862     }
 863 }
 864
 865 /*****************************************************************************
 866  * Close: frees unused data
 867  *****************************************************************************/
 868 static void Close ( vlc_object_t * p_this )
 869 {
 870     unsigned int i_track;
 871     demux_t *  p_demux = (demux_t *)p_this;
 872     demux_sys_t *p_sys = p_demux->p_sys;
 873
 874     msg_Dbg( p_demux, "freeing all memory" );
 875
 876     MP4_BoxFree( p_demux->s, p_sys->p_root );
 877     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 878     {
 879         MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
 880     }
 881     FREE( p_sys->track );
 882
 883     free( p_sys );
 884 }
 885
 886
 887
 888 /****************************************************************************
 889  * Local functions, specific to vlc
 890  ****************************************************************************/
 891
 892 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 893 static int TrackCreateChunksIndex( demux_t *p_demux,
 894                                    mp4_track_t *p_demux_track )
 895 {
 896     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 897     MP4_Box_t *p_stsc;
 898
 899     unsigned int i_chunk;
 900     unsigned int i_index, i_last;
 901
 902     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 903           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 904         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 905     {
 906         return( VLC_EGENERIC );
 907     }
 908
 909     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 910     if( !p_demux_track->i_chunk_count )
 911     {
 912         msg_Warn( p_demux, "no chunk defined" );
 913         return( VLC_EGENERIC );
 914     }
 915     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 916                                    sizeof( mp4_chunk_t ) );
 917
 918     /* first we read chunk offset */
 919     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 920     {
 921         p_demux_track->chunk[i_chunk].i_offset =
 922                 p_co64->data.p_co64->i_chunk_offset[i_chunk];
 923     }
 924
 925     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 926         to be used for the sample XXX begin to 1
 927         We construct it begining at the end */
 928     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 929     i_index = p_stsc->data.p_stsc->i_entry_count;
 930     if( !i_index )
 931     {
 932         msg_Warn( p_demux, "cannot read chunk table or table empty" );
 933         return( VLC_EGENERIC );
 934     }
 935
 936     while( i_index-- )
 937     {
 938         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 939              i_chunk < i_last; i_chunk++ )
 940         {
 941             p_demux_track->chunk[i_chunk].i_sample_description_index =
 942                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 943             p_demux_track->chunk[i_chunk].i_sample_count =
 944                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 945         }
 946         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 947     }
 948
 949     p_demux_track->chunk[0].i_sample_first = 0;
 950     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 951     {
 952         p_demux_track->chunk[i_chunk].i_sample_first =
 953             p_demux_track->chunk[i_chunk-1].i_sample_first +
 954                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 955     }
 956
 957     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
 958              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
 959
 960     return VLC_SUCCESS;
 961 }
 962
 963 static int TrackCreateSamplesIndex( demux_t *p_demux,
 964                                     mp4_track_t *p_demux_track )
 965 {
 966     MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
 967                           ctts make same mapping but for composition time,
 968                           not yet used and probably not usefull */
 969     MP4_Box_t *p_stsz; /* gives sample size of each samples, there is also stz2
 970                           that uses a compressed form FIXME make them in libmp4
 971                           as a unique type */
 972     /* TODO use also stss and stsh table for seeking */
 973     /* FIXME use edit table */
 974     int64_t i_sample;
 975     int64_t i_chunk;
 976
 977     int64_t i_index;
 978     int64_t i_index_sample_used;
 979
 980     int64_t i_last_dts;
 981
 982     p_stts = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
 983     p_stsz = MP4_BoxGet( p_demux_track->p_stbl, "stsz" ); /* FIXME and stz2 */
 984
 985     if( ( !p_stts )||( !p_stsz ) )
 986     {
 987         msg_Warn( p_demux, "cannot read sample table" );
 988         return( VLC_EGENERIC );
 989     }
 990
 991     p_demux_track->i_sample_count = p_stsz->data.p_stsz->i_sample_count;
 992
 993
 994     /* for sample size, there are 2 case */
 995     if( p_stsz->data.p_stsz->i_sample_size )
 996     {
 997         /* 1: all sample have the same size, so no need to construct a table */
 998         p_demux_track->i_sample_size = p_stsz->data.p_stsz->i_sample_size;
 999         p_demux_track->p_sample_size = NULL;
1000     }
1001     else
1002     {
1003         /* 2: each sample can have a different size */
1004         p_demux_track->i_sample_size = 0;
1005         p_demux_track->p_sample_size =
1006             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1007
1008         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1009         {
1010             p_demux_track->p_sample_size[i_sample] =
1011                     p_stsz->data.p_stsz->i_entry_size[i_sample];
1012         }
1013     }
1014     /* we have extracted all the information from stsz, now use stts */
1015
1016     /* if we don't want to waste too much memory, we can't expand
1017        the box! so each chunk will contain an "extract" of this table
1018        for fast research */
1019
1020     i_last_dts = 0;
1021     i_index = 0; i_index_sample_used = 0;
1022
1023     /* create and init last data for each chunk */
1024     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1025     {
1026
1027         int64_t i_entry, i_sample_count, i;
1028
1029         /* save last dts */
1030         p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
1031
1032         /* count how many entries are needed for this chunk
1033          * for p_sample_delta_dts and p_sample_count_dts */
1034         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
1035
1036         i_entry = 0;
1037         while( i_sample_count > 0 )
1038         {
1039             i_sample_count -=
1040                 p_stts->data.p_stts->i_sample_count[i_index+i_entry];
1041             if( i_entry == 0 )
1042             {
1043                 /* don't count already used sample in this entry */
1044                 i_sample_count += i_index_sample_used;
1045             }
1046             i_entry++;
1047         }
1048
1049         /* allocate them */
1050         p_demux_track->chunk[i_chunk].p_sample_count_dts =
1051             calloc( i_entry, sizeof( uint32_t ) );
1052         p_demux_track->chunk[i_chunk].p_sample_delta_dts =
1053             calloc( i_entry, sizeof( uint32_t ) );
1054
1055         /* now copy */
1056         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
1057         for( i = 0; i < i_entry; i++ )
1058         {
1059             int64_t i_used;
1060             int64_t i_rest;
1061
1062             i_rest = p_stts->data.p_stts->i_sample_count[i_index] -
1063                 i_index_sample_used;
1064
1065             i_used = __MIN( i_rest, i_sample_count );
1066
1067             i_index_sample_used += i_used;
1068             i_sample_count -= i_used;
1069
1070             p_demux_track->chunk[i_chunk].p_sample_count_dts[i] = i_used;
1071
1072             p_demux_track->chunk[i_chunk].p_sample_delta_dts[i] =
1073                 p_stts->data.p_stts->i_sample_delta[i_index];
1074
1075             i_last_dts += i_used *
1076                 p_demux_track->chunk[i_chunk].p_sample_delta_dts[i];
1077
1078             if( i_index_sample_used >=
1079                 p_stts->data.p_stts->i_sample_count[i_index] )
1080             {
1081                 i_index++;
1082                 i_index_sample_used = 0;
1083             }
1084         }
1085     }
1086
1087     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1088              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1089              i_last_dts / p_demux_track->i_timescale );
1090
1091     return VLC_SUCCESS;
1092 }
1093
1094 /*
1095  * TrackCreateES:
1096  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1097  */
1098 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1099                           unsigned int i_chunk, es_out_id_t **pp_es )
1100 {
1101     MP4_Box_t   *p_sample;
1102     MP4_Box_t   *p_esds;
1103
1104     *pp_es = NULL;
1105
1106     if( !p_track->chunk[i_chunk].i_sample_description_index )
1107     {
1108         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1109                   p_track->i_track_ID );
1110         return VLC_EGENERIC;
1111     }
1112
1113     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1114                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1115
1116     if( !p_sample ||
1117         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1118     {
1119         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1120                   p_track->i_track_ID );
1121         return VLC_EGENERIC;
1122     }
1123
1124     p_track->p_sample = p_sample;
1125
1126     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1127     {
1128         MP4_Box_data_sample_soun_t *p_soun;
1129
1130         p_soun = p_sample->data.p_sample_soun;
1131
1132         if( p_soun->i_qt_version == 0 )
1133         {
1134             switch( p_sample->i_type )
1135             {
1136                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1137                     p_soun->i_qt_version = 1;
1138                     p_soun->i_sample_per_packet = 64;
1139                     p_soun->i_bytes_per_packet  = 34;
1140                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1141                     p_soun->i_bytes_per_sample  = 2;
1142                     break;
1143                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1144                     p_soun->i_qt_version = 1;
1145                     p_soun->i_sample_per_packet = 6;
1146                     p_soun->i_bytes_per_packet  = 2;
1147                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1148                     p_soun->i_bytes_per_sample  = 2;
1149                     break;
1150                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1151                     p_soun->i_qt_version = 1;
1152                     p_soun->i_sample_per_packet = 12;
1153                     p_soun->i_bytes_per_packet  = 2;
1154                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1155                     p_soun->i_bytes_per_sample  = 2;
1156                     break;
1157                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1158                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1159                     p_soun->i_samplesize = 8;
1160                     break;
1161                 default:
1162                     break;
1163             }
1164
1165         }
1166         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1167         {
1168             p_soun->i_qt_version = 0;
1169         }
1170     }
1171
1172
1173     /* It's a little ugly but .. there are special cases */
1174     switch( p_sample->i_type )
1175     {
1176         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1177         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1178             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1179             break;
1180         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1181             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1182             break;
1183         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1184             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1185             break;
1186
1187         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1188             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1189             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1190             /* FIXME UTF-8 doesn't work here ? */
1191             /* p_track->fmt.subs.psz_encoding = strdup( "UTF-8" ); */
1192             break;
1193
1194         default:
1195             p_track->fmt.i_codec = p_sample->i_type;
1196             break;
1197     }
1198
1199     /* now see if esds is present and if so create a data packet
1200         with decoder_specific_info  */
1201 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1202     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1203           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1204         ( p_esds->data.p_esds )&&
1205         ( p_decconfig ) )
1206     {
1207         /* First update information based on i_objectTypeIndication */
1208         switch( p_decconfig->i_objectTypeIndication )
1209         {
1210             case( 0x20 ): /* MPEG4 VIDEO */
1211                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1212                 break;
1213             case( 0x40):
1214                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1215                 break;
1216             case( 0x60):
1217             case( 0x61):
1218             case( 0x62):
1219             case( 0x63):
1220             case( 0x64):
1221             case( 0x65): /* MPEG2 video */
1222                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1223                 break;
1224             /* Theses are MPEG2-AAC */
1225             case( 0x66): /* main profile */
1226             case( 0x67): /* Low complexity profile */
1227             case( 0x68): /* Scaleable Sampling rate profile */
1228                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1229                 break;
1230             /* true MPEG 2 audio */
1231             case( 0x69):
1232                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1233                 break;
1234             case( 0x6a): /* MPEG1 video */
1235                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1236                 break;
1237             case( 0x6b): /* MPEG1 audio */
1238                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1239                 break;
1240             case( 0x6c ): /* jpeg */
1241                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1242                 break;
1243
1244             /* Private ID */
1245             case( 0xe0 ): /* NeroDigital: dvd subs */
1246                 if( p_track->fmt.i_cat == SPU_ES )
1247                 {
1248                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1249                     break;
1250                 }
1251             /* Fallback */
1252             default:
1253                 /* Unknown entry, but don't touch i_fourcc */
1254                 msg_Warn( p_demux,
1255                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1256                           p_decconfig->i_objectTypeIndication,
1257                           p_track->i_track_ID );
1258                 break;
1259         }
1260         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1261         if( p_track->fmt.i_extra > 0 )
1262         {
1263             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1264             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1265                     p_track->fmt.i_extra );
1266         }
1267     }
1268     else
1269     {
1270         switch( p_sample->i_type )
1271         {
1272             /* qt decoder, send the complete chunk */
1273             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1274             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1275             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1276             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1277             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1278                 p_track->fmt.i_extra =
1279                     p_sample->data.p_sample_vide->i_qt_image_description;
1280                 if( p_track->fmt.i_extra > 0 )
1281                 {
1282                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1283                     memcpy( p_track->fmt.p_extra,
1284                             p_sample->data.p_sample_vide->p_qt_image_description,
1285                             p_track->fmt.i_extra);
1286                 }
1287                 break;
1288             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1289             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1290             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1291             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1292                 p_track->fmt.i_extra =
1293                     p_sample->data.p_sample_soun->i_qt_description;
1294                 if( p_track->fmt.i_extra > 0 )
1295                 {
1296                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1297                     memcpy( p_track->fmt.p_extra,
1298                             p_sample->data.p_sample_soun->p_qt_description,
1299                             p_track->fmt.i_extra);
1300                 }
1301                 break;
1302
1303             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1304             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1305             {
1306                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1307
1308                 if( p_avcC )
1309                 {
1310                     /* Hack: use a packetizer to reecampsulate data in anexe B format */
1311                     msg_Dbg( p_demux, "avcC: size=%d", p_avcC->data.p_avcC->i_avcC );
1312                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1313                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1314                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC, p_track->fmt.i_extra );
1315                     p_track->fmt.b_packetized = VLC_FALSE;
1316                 }
1317                 else
1318                 {
1319                     msg_Err( p_demux, "missing avcC" );
1320                 }
1321                 break;
1322             }
1323
1324             default:
1325                 break;
1326         }
1327     }
1328
1329 #undef p_decconfig
1330
1331     /* some last initialisation */
1332     switch( p_track->fmt.i_cat )
1333     {
1334     case( VIDEO_ES ):
1335         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1336         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1337
1338         /* fall on display size */
1339         if( p_track->fmt.video.i_width <= 0 )
1340             p_track->fmt.video.i_width = p_track->i_width;
1341         if( p_track->fmt.video.i_height <= 0 )
1342             p_track->fmt.video.i_height = p_track->i_height;
1343
1344         /* Find out apect ratio from display size */
1345         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1346             /* Work-around buggy muxed files */
1347             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1348             p_track->fmt.video.i_aspect =
1349                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1350
1351         break;
1352
1353     case( AUDIO_ES ):
1354         p_track->fmt.audio.i_channels =
1355             p_sample->data.p_sample_soun->i_channelcount;
1356         p_track->fmt.audio.i_rate =
1357             p_sample->data.p_sample_soun->i_sampleratehi;
1358         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1359             p_sample->data.p_sample_soun->i_sampleratehi *
1360                 p_sample->data.p_sample_soun->i_samplesize;
1361         p_track->fmt.audio.i_bitspersample =
1362             p_sample->data.p_sample_soun->i_samplesize;
1363         break;
1364
1365     default:
1366         break;
1367     }
1368
1369     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1370
1371     return VLC_SUCCESS;
1372 }
1373
1374 /* given a time it return sample/chunk
1375  * it also update elst field of the track
1376  */
1377 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1378                                    int64_t i_start, uint32_t *pi_chunk,
1379                                    uint32_t *pi_sample )
1380 {
1381     demux_sys_t *p_sys = p_demux->p_sys;
1382     MP4_Box_t   *p_stss;
1383     uint64_t     i_dts;
1384     unsigned int i_sample;
1385     unsigned int i_chunk;
1386     int          i_index;
1387
1388     /* FIXME see if it's needed to check p_track->i_chunk_count */
1389     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1390     {
1391         return( VLC_EGENERIC );
1392     }
1393
1394     /* handle elst (find the correct one) */
1395     MP4_TrackSetELST( p_demux, p_track, i_start );
1396     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1397     {
1398         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1399         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1400
1401         /* now calculate i_start for this elst */
1402         /* offset */
1403         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1404         if( i_start < 0 )
1405         {
1406             *pi_chunk = 0;
1407             *pi_sample= 0;
1408
1409             return VLC_SUCCESS;
1410         }
1411         /* to track time scale */
1412         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1413         /* add elst offset */
1414         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1415              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1416             elst->i_media_time[p_track->i_elst] > 0 )
1417         {
1418             i_start += elst->i_media_time[p_track->i_elst];
1419         }
1420
1421         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1422                  "ms (track)", p_track->i_elst,
1423                  i_mvt * 1000 / p_sys->i_timescale,
1424                  i_start * 1000 / p_track->i_timescale );
1425     }
1426     else
1427     {
1428         /* convert absolute time to in timescale unit */
1429         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1430     }
1431
1432     /* we start from sample 0/chunk 0, hope it won't take too much time */
1433     /* *** find good chunk *** */
1434     for( i_chunk = 0; ; i_chunk++ )
1435     {
1436         if( i_chunk + 1 >= p_track->i_chunk_count )
1437         {
1438             /* at the end and can't check if i_start in this chunk,
1439                it will be check while searching i_sample */
1440             i_chunk = p_track->i_chunk_count - 1;
1441             break;
1442         }
1443
1444         if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1445             i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1446         {
1447             break;
1448         }
1449     }
1450
1451     /* *** find sample in the chunk *** */
1452     i_sample = p_track->chunk[i_chunk].i_sample_first;
1453     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1454     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1455     {
1456         if( i_dts +
1457             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1458             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1459         {
1460             i_dts    +=
1461                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1462                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1463
1464             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1465             i_index++;
1466         }
1467         else
1468         {
1469             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1470             {
1471                 break;
1472             }
1473             i_sample += ( i_start - i_dts ) /
1474                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1475             break;
1476         }
1477     }
1478
1479     if( i_sample >= p_track->i_sample_count )
1480     {
1481         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1482                   "(seeking too far) chunk=%d sample=%d",
1483                   p_track->i_track_ID, i_chunk, i_sample );
1484         return( VLC_EGENERIC );
1485     }
1486
1487
1488     /* *** Try to find nearest sync points *** */
1489     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1490     {
1491         unsigned int i_index;
1492         msg_Dbg( p_demux,
1493                     "track[Id 0x%x] using Sync Sample Box (stss)",
1494                     p_track->i_track_ID );
1495         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1496         {
1497             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1498             {
1499                 if( i_index > 0 )
1500                 {
1501                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1502                             i_sample,
1503                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1504                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1505                     /* new i_sample is less than old so i_chunk can only decreased */
1506                     while( i_chunk > 0 &&
1507                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1508                     {
1509                         i_chunk--;
1510                     }
1511                 }
1512                 else
1513                 {
1514                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1515                             i_sample,
1516                             p_stss->data.p_stss->i_sample_number[i_index] );
1517                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1518                     /* new i_sample is more than old so i_chunk can only increased */
1519                     while( i_chunk < p_track->i_chunk_count - 1 &&
1520                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1521                              p_track->chunk[i_chunk].i_sample_count )
1522                     {
1523                         i_chunk++;
1524                     }
1525                 }
1526                 break;
1527             }
1528         }
1529     }
1530     else
1531     {
1532         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1533                  "Sample Box (stss)", p_track->i_track_ID );
1534     }
1535
1536     *pi_chunk  = i_chunk;
1537     *pi_sample = i_sample;
1538
1539     return VLC_SUCCESS;
1540 }
1541
1542 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1543                                  unsigned int i_chunk, unsigned int i_sample )
1544 {
1545     vlc_bool_t b_reselect = VLC_FALSE;
1546
1547     /* now see if actual es is ok */
1548     if( p_track->i_chunk < 0 ||
1549         p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1550         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1551             p_track->chunk[i_chunk].i_sample_description_index )
1552     {
1553         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1554                   p_track->i_track_ID );
1555
1556         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1557                         p_track->p_es, &b_reselect );
1558
1559         es_out_Del( p_demux->out, p_track->p_es );
1560
1561         p_track->p_es = NULL;
1562
1563         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1564         {
1565             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1566                      p_track->i_track_ID );
1567
1568             p_track->b_ok       = VLC_FALSE;
1569             p_track->b_selected = VLC_FALSE;
1570             return VLC_EGENERIC;
1571         }
1572     }
1573
1574     /* select again the new decoder */
1575     if( b_reselect )
1576     {
1577         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1578     }
1579
1580     p_track->i_chunk    = i_chunk;
1581     p_track->i_sample   = i_sample;
1582
1583     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1584 }
1585
1586 /****************************************************************************
1587  * MP4_TrackCreate:
1588  ****************************************************************************
1589  * Parse track information and create all needed data to run a track
1590  * If it succeed b_ok is set to 1 else to 0
1591  ****************************************************************************/
1592 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1593                              MP4_Box_t *p_box_trak )
1594 {
1595     demux_sys_t *p_sys = p_demux->p_sys;
1596
1597     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1598     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1599     MP4_Box_t *p_elst;
1600
1601     MP4_Box_t *p_mdhd;
1602     MP4_Box_t *p_udta;
1603     MP4_Box_t *p_hdlr;
1604
1605     MP4_Box_t *p_vmhd;
1606     MP4_Box_t *p_smhd;
1607
1608     MP4_Box_t *p_drms;
1609
1610     unsigned int i;
1611     char language[4];
1612
1613     /* hint track unsuported */
1614
1615     /* set default value (-> track unusable) */
1616     p_track->b_ok       = VLC_FALSE;
1617     p_track->b_enable   = VLC_FALSE;
1618     p_track->b_selected = VLC_FALSE;
1619
1620     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1621
1622     if( !p_tkhd )
1623     {
1624         return;
1625     }
1626
1627     /* do we launch this track by default ? */
1628     p_track->b_enable =
1629         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1630
1631     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1632     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1633     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1634
1635     if( p_tref )
1636     {
1637 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1638     }
1639
1640     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1641     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1642
1643     if( ( !p_mdhd )||( !p_hdlr ) )
1644     {
1645         return;
1646     }
1647
1648     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1649
1650     for( i = 0; i < 3; i++ )
1651     {
1652         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1653     }
1654     language[3] = '\0';
1655
1656     switch( p_hdlr->data.p_hdlr->i_handler_type )
1657     {
1658         case( FOURCC_soun ):
1659             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1660             {
1661                 return;
1662             }
1663             p_track->fmt.i_cat = AUDIO_ES;
1664             break;
1665
1666         case( FOURCC_vide ):
1667             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1668             {
1669                 return;
1670             }
1671             p_track->fmt.i_cat = VIDEO_ES;
1672             break;
1673
1674         case( FOURCC_text ):
1675         case( FOURCC_subp ):
1676             p_track->fmt.i_cat = SPU_ES;
1677             break;
1678
1679         default:
1680             return;
1681     }
1682
1683     p_track->i_elst = 0;
1684     p_track->i_elst_time = 0;
1685     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1686     {
1687         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1688         int i;
1689
1690         msg_Warn( p_demux, "elst box found" );
1691         for( i = 0; i < elst->i_entry_count; i++ )
1692         {
1693             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd
1694                      "ms) rate=%d.%d", i,
1695                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1696                      elst->i_media_time[i] >= 0 ?
1697                      elst->i_media_time[i] * 1000 / p_track->i_timescale : -1,
1698                      elst->i_media_rate_integer[i],
1699                      elst->i_media_rate_fraction[i] );
1700         }
1701     }
1702
1703
1704 /*  TODO
1705     add support for:
1706     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1707 */
1708     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1709         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1710     {
1711         return;
1712     }
1713
1714     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1715     p_track->b_drms = p_drms != NULL;
1716     p_track->p_drms = p_track->b_drms ?
1717         p_drms->data.p_sample_soun->p_drms : NULL;
1718
1719     /* Set language */
1720     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1721     {
1722         p_track->fmt.psz_language = strdup( language );
1723     }
1724
1725     p_udta = MP4_BoxGet( p_box_trak, "udta" );
1726     if( p_udta )
1727     {
1728         MP4_Box_t *p_0xa9xxx;
1729         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1730                  p_0xa9xxx = p_0xa9xxx->p_next )
1731         {
1732             switch( p_0xa9xxx->i_type )
1733             {
1734                 case FOURCC_0xa9nam:
1735                     p_track->fmt.psz_description =
1736                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1737                     break;
1738             }
1739         }
1740     }
1741
1742     /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1743     if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1744     {
1745         MP4_Box_t *p_sample;
1746
1747         p_sample = MP4_BoxGet(  p_track->p_stsd, "[0]" );
1748         if( p_sample && p_sample->data.p_sample_soun)
1749         {
1750             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1751             if( p_soun->i_qt_version == 0 &&
1752                 p_track->i_timescale != p_soun->i_sampleratehi )
1753             {
1754                 msg_Warn( p_demux,
1755                           "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1756                           "qt_version == 0\n"
1757                           "Making both equal. (report any problem)",
1758                           p_track->i_timescale, p_soun->i_sampleratehi );
1759
1760                 if( p_soun->i_sampleratehi )
1761                     p_track->i_timescale = p_soun->i_sampleratehi;
1762                 else
1763                     p_soun->i_sampleratehi = p_track->i_timescale;
1764             }
1765         }
1766     }
1767
1768     /* Create chunk index table and sample index table */
1769     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1770         TrackCreateSamplesIndex( p_demux, p_track ) )
1771     {
1772         return; /* cannot create chunks index */
1773     }
1774
1775     p_track->i_chunk  = 0;
1776     p_track->i_sample = 0;
1777
1778     /* now create es */
1779     if( TrackCreateES( p_demux,
1780                        p_track, p_track->i_chunk,
1781                        &p_track->p_es ) )
1782     {
1783         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1784                  p_track->i_track_ID );
1785         return;
1786     }
1787
1788 #if 0
1789     {
1790         int i;
1791         for( i = 0; i < p_track->i_chunk_count; i++ )
1792         {
1793             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1794                      i, p_track->chunk[i].i_sample_count,
1795                      p_track->chunk[i].i_first_dts );
1796
1797         }
1798     }
1799 #endif
1800     p_track->b_ok = VLC_TRUE;
1801 }
1802
1803 /****************************************************************************
1804  * MP4_TrackDestroy:
1805  ****************************************************************************
1806  * Destroy a track created by MP4_TrackCreate.
1807  ****************************************************************************/
1808 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1809 {
1810     unsigned int i_chunk;
1811
1812     p_track->b_ok = VLC_FALSE;
1813     p_track->b_enable   = VLC_FALSE;
1814     p_track->b_selected = VLC_FALSE;
1815
1816     es_format_Clean( &p_track->fmt );
1817
1818     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1819     {
1820         if( p_track->chunk )
1821         {
1822            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1823            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1824         }
1825     }
1826     FREE( p_track->chunk );
1827
1828     if( !p_track->i_sample_size )
1829     {
1830         FREE( p_track->p_sample_size );
1831     }
1832 }
1833
1834 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1835                             mtime_t i_start )
1836 {
1837     if( !p_track->b_ok )
1838     {
1839         return VLC_EGENERIC;
1840     }
1841
1842     if( p_track->b_selected )
1843     {
1844         msg_Warn( p_demux, "track[Id 0x%x] already selected",
1845                   p_track->i_track_ID );
1846         return VLC_SUCCESS;
1847     }
1848
1849     return MP4_TrackSeek( p_demux, p_track, i_start );
1850 }
1851
1852 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1853 {
1854     if( !p_track->b_ok )
1855     {
1856         return;
1857     }
1858
1859     if( !p_track->b_selected )
1860     {
1861         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1862                   p_track->i_track_ID );
1863         return;
1864     }
1865     if( p_track->p_es )
1866     {
1867         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1868                         p_track->p_es, VLC_FALSE );
1869     }
1870
1871     p_track->b_selected = VLC_FALSE;
1872 }
1873
1874 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1875                           mtime_t i_start )
1876 {
1877     uint32_t i_chunk;
1878     uint32_t i_sample;
1879
1880     if( !p_track->b_ok )
1881     {
1882         return( VLC_EGENERIC );
1883     }
1884
1885     p_track->b_selected = VLC_FALSE;
1886
1887     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1888                                 &i_chunk, &i_sample ) )
1889     {
1890         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1891                   p_track->i_track_ID );
1892         return( VLC_EGENERIC );
1893     }
1894
1895     p_track->b_selected = VLC_TRUE;
1896
1897     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
1898         VLC_SUCCESS )
1899     {
1900         p_track->b_selected = VLC_TRUE;
1901     }
1902     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1903 }
1904
1905
1906 /*
1907  * 3 types: for audio
1908  *
1909  */
1910 #define QT_V0_MAX_SAMPLES 1024
1911 static int MP4_TrackSampleSize( mp4_track_t *p_track )
1912 {
1913     int i_size;
1914     MP4_Box_data_sample_soun_t *p_soun;
1915
1916     if( p_track->i_sample_size == 0 )
1917     {
1918         /* most simple case */
1919         return p_track->p_sample_size[p_track->i_sample];
1920     }
1921     if( p_track->fmt.i_cat != AUDIO_ES )
1922     {
1923         return p_track->i_sample_size;
1924     }
1925
1926     p_soun = p_track->p_sample->data.p_sample_soun;
1927
1928     if( p_soun->i_qt_version == 1 )
1929     {
1930         i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
1931             p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
1932     }
1933     else if( p_track->i_sample_size > 256 )
1934     {
1935         /* We do that so we don't read too much data
1936          * (in this case we are likely dealing with compressed data) */
1937         i_size = p_track->i_sample_size;
1938     }
1939     else
1940     {
1941         /* Read a bunch of samples at once */
1942         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
1943             ( p_track->i_sample -
1944               p_track->chunk[p_track->i_chunk].i_sample_first );
1945
1946         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
1947         i_size = i_samples * p_track->i_sample_size;
1948     }
1949
1950     //fprintf( stderr, "size=%d\n", i_size );
1951     return i_size;
1952 }
1953
1954 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
1955 {
1956     unsigned int i_sample;
1957     uint64_t i_pos;
1958
1959     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
1960
1961     if( p_track->i_sample_size )
1962     {
1963         MP4_Box_data_sample_soun_t *p_soun =
1964             p_track->p_sample->data.p_sample_soun;
1965
1966         if( p_soun->i_qt_version == 0 )
1967         {
1968             i_pos += ( p_track->i_sample -
1969                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
1970                      p_track->i_sample_size;
1971         }
1972         else
1973         {
1974             /* we read chunk by chunk */
1975             i_pos += 0;
1976         }
1977     }
1978     else
1979     {
1980         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
1981              i_sample < p_track->i_sample; i_sample++ )
1982         {
1983             i_pos += p_track->p_sample_size[i_sample];
1984         }
1985     }
1986
1987     return i_pos;
1988 }
1989
1990 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
1991 {
1992     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
1993     {
1994         MP4_Box_data_sample_soun_t *p_soun;
1995
1996         p_soun = p_track->p_sample->data.p_sample_soun;
1997
1998         if( p_soun->i_qt_version == 1 )
1999         {
2000             /* chunk by chunk */
2001             p_track->i_sample =
2002                 p_track->chunk[p_track->i_chunk].i_sample_first +
2003                 p_track->chunk[p_track->i_chunk].i_sample_count;
2004         }
2005         else if( p_track->i_sample_size > 256 )
2006         {
2007             /* We do that so we don't read too much data
2008              * (in this case we are likely dealing with compressed data) */
2009             p_track->i_sample += 1;
2010         }
2011         else
2012         {
2013             /* FIXME */
2014             p_track->i_sample += QT_V0_MAX_SAMPLES;
2015             if( p_track->i_sample >
2016                 p_track->chunk[p_track->i_chunk].i_sample_first +
2017                 p_track->chunk[p_track->i_chunk].i_sample_count )
2018             {
2019                 p_track->i_sample =
2020                     p_track->chunk[p_track->i_chunk].i_sample_first +
2021                     p_track->chunk[p_track->i_chunk].i_sample_count;
2022             }
2023         }
2024     }
2025     else
2026     {
2027         p_track->i_sample++;
2028     }
2029
2030     if( p_track->i_sample >= p_track->i_sample_count )
2031     {
2032         /* we have reach end of the track so free decoder stuff */
2033         msg_Warn( p_demux, "track[0x%x] will be disabled", p_track->i_track_ID );
2034         MP4_TrackUnselect( p_demux, p_track );
2035         return VLC_EGENERIC;
2036     }
2037
2038     /* Have we changed chunk ? */
2039     if( p_track->i_sample >=
2040             p_track->chunk[p_track->i_chunk].i_sample_first +
2041             p_track->chunk[p_track->i_chunk].i_sample_count )
2042     {
2043         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2044                                   p_track->i_sample ) )
2045         {
2046             msg_Warn( p_demux, "track[0x%x] will be disabled "
2047                       "(cannot restart decoder)", p_track->i_track_ID );
2048             MP4_TrackUnselect( p_demux, p_track );
2049             return VLC_EGENERIC;
2050         }
2051     }
2052
2053     /* Have we changed elst */
2054     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2055     {
2056         demux_sys_t *p_sys = p_demux->p_sys;
2057         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2058         int64_t i_mvt = MP4_TrackGetPTS( p_demux, p_track ) *
2059                         p_sys->i_timescale / (int64_t)1000000;
2060
2061         if( p_track->i_elst < elst->i_entry_count &&
2062             i_mvt >= p_track->i_elst_time +
2063                      elst->i_segment_duration[p_track->i_elst] )
2064         {
2065             MP4_TrackSetELST( p_demux, p_track,
2066                               MP4_TrackGetPTS( p_demux, p_track ) );
2067         }
2068     }
2069
2070     return VLC_SUCCESS;
2071 }
2072
2073 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2074                               int64_t i_time )
2075 {
2076     demux_sys_t *p_sys = p_demux->p_sys;
2077     int         i_elst_last = tk->i_elst;
2078
2079     /* handle elst (find the correct one) */
2080     tk->i_elst      = 0;
2081     tk->i_elst_time = 0;
2082     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2083     {
2084         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2085         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2086
2087         for( tk->i_elst = 0; tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2088         {
2089             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2090
2091             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2092             {
2093                 break;
2094             }
2095             tk->i_elst_time += i_dur;
2096         }
2097
2098         if( tk->i_elst >= elst->i_entry_count )
2099         {
2100             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2101             tk->i_elst = elst->i_entry_count - 1;
2102             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2103         }
2104
2105         if( elst->i_media_time[tk->i_elst] < 0 )
2106         {
2107             /* track offset */
2108             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2109         }
2110     }
2111     if( i_elst_last != tk->i_elst )
2112     {
2113         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2114     }
2115 }