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

   1 /*****************************************************************************
   2  * mp4.c : MP4 file input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 the VideoLAN team
   5  * $Id$
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32 #include <vlc_plugin.h>
  33
  34
  35 #include <vlc_demux.h>
  36 #include <vlc_md5.h>
  37 #include <vlc_charset.h>
  38 #include <vlc_iso_lang.h>
  39 #include <vlc_meta.h>
  40 #include <vlc_input.h>
  41
  42 #include "libmp4.h"
  43 #include "drms.h"
  44 #include "../../meta_engine/id3genres.h"
  45
  46 /*****************************************************************************
  47  * Module descriptor
  48  *****************************************************************************/
  49 static int  Open ( vlc_object_t * );
  50 static void Close( vlc_object_t * );
  51
  52 vlc_module_begin ()
  53     set_category( CAT_INPUT )
  54     set_subcategory( SUBCAT_INPUT_DEMUX )
  55     set_description( N_("MP4 stream demuxer") )
  56     set_shortname( N_("MP4") )
  57     set_capability( "demux", 242 )
  58     set_callbacks( Open, Close )
  59 vlc_module_end ()
  60
  61 /*****************************************************************************
  62  * Local prototypes
  63  *****************************************************************************/
  64 static int   Demux   ( demux_t * );
  65 static int   DemuxRef( demux_t *p_demux ){ (void)p_demux; return 0;}
  66 static int   Seek    ( demux_t *, mtime_t );
  67 static int   Control ( demux_t *, int, va_list );
  68
  69 /* Contain all information about a chunk */
  70 typedef struct
  71 {
  72     uint64_t     i_offset; /* absolute position of this chunk in the file */
  73     uint32_t     i_sample_description_index; /* index for SampleEntry to use */
  74     uint32_t     i_sample_count; /* how many samples in this chunk */
  75     uint32_t     i_sample_first; /* index of the first sample in this chunk */
  76
  77     /* now provide way to calculate pts, dts, and offset without too
  78         much memory and with fast access */
  79
  80     /* with this we can calculate dts/pts without waste memory */
  81     uint64_t     i_first_dts;   /* DTS of the first sample */
  82     uint64_t     i_last_dts;    /* DTS of the last sample */
  83     uint32_t     *p_sample_count_dts;
  84     uint32_t     *p_sample_delta_dts;   /* dts delta */
  85
  86     uint32_t     *p_sample_count_pts;
  87     int32_t      *p_sample_offset_pts;  /* pts-dts */
  88
  89     /* TODO if needed add pts
  90         but quickly *add* support for edts and seeking */
  91
  92 } mp4_chunk_t;
  93
  94  /* Contain all needed information for read all track with vlc */
  95 typedef struct
  96 {
  97     unsigned int i_track_ID;/* this should be unique */
  98
  99     int b_ok;               /* The track is usable */
 100     int b_enable;           /* is the trak enable by default */
 101     bool b_selected;  /* is the trak being played */
 102     bool b_chapter;   /* True when used for chapter only */
 103
 104     bool b_mac_encoding;
 105
 106     es_format_t fmt;
 107     es_out_id_t *p_es;
 108
 109     /* display size only ! */
 110     int i_width;
 111     int i_height;
 112
 113     /* more internal data */
 114     uint64_t        i_timescale;    /* time scale for this track only */
 115
 116     /* elst */
 117     int             i_elst;         /* current elst */
 118     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 119     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 120
 121     /* give the next sample to read, i_chunk is to find quickly where
 122       the sample is located */
 123     uint32_t         i_sample;       /* next sample to read */
 124     uint32_t         i_chunk;        /* chunk where next sample is stored */
 125     /* total count of chunk and sample */
 126     uint32_t         i_chunk_count;
 127     uint32_t         i_sample_count;
 128
 129     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 130
 131     /* sample size, p_sample_size defined only if i_sample_size == 0
 132         else i_sample_size is size for all sample */
 133     uint32_t         i_sample_size;
 134     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 135                                     too much time to do sumations each time*/
 136
 137     MP4_Box_t *p_stbl;  /* will contain all timing information */
 138     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 139     MP4_Box_t *p_sample;/* point on actual sdsd */
 140
 141     bool b_drms;
 142     void      *p_drms;
 143     MP4_Box_t *p_skcr;
 144
 145 } mp4_track_t;
 146
 147
 148 struct demux_sys_t
 149 {
 150     MP4_Box_t    *p_root;      /* container for the whole file */
 151
 152     mtime_t      i_pcr;
 153
 154     uint64_t     i_time;         /* time position of the presentation
 155                                   * in movie timescale */
 156     uint64_t     i_timescale;    /* movie time scale */
 157     uint64_t     i_duration;     /* movie duration */
 158     unsigned int i_tracks;       /* number of tracks */
 159     mp4_track_t  *track;         /* array of track */
 160     float        f_fps;          /* number of frame per seconds */
 161
 162     /* */
 163     MP4_Box_t    *p_tref_chap;
 164
 165     /* */
 166     input_title_t *p_title;
 167 };
 168
 169 /*****************************************************************************
 170  * Declaration of local function
 171  *****************************************************************************/
 172 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *, bool b_force_enable );
 173 static void MP4_TrackDestroy(  mp4_track_t * );
 174
 175 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 176 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 177
 178 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 179
 180 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 181 static int      MP4_TrackSampleSize( mp4_track_t * );
 182 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 183 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 184
 185 static void     MP4_UpdateSeekpoint( demux_t * );
 186 static const char *MP4_ConvertMacCode( uint16_t );
 187
 188 /* Return time in s of a track */
 189 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 190 {
 191 #define chunk p_track->chunk[p_track->i_chunk]
 192
 193     unsigned int i_index = 0;
 194     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 195     int64_t i_dts = chunk.i_first_dts;
 196
 197     while( i_sample > 0 )
 198     {
 199         if( i_sample > chunk.p_sample_count_dts[i_index] )
 200         {
 201             i_dts += chunk.p_sample_count_dts[i_index] *
 202                 chunk.p_sample_delta_dts[i_index];
 203             i_sample -= chunk.p_sample_count_dts[i_index];
 204             i_index++;
 205         }
 206         else
 207         {
 208             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 209             break;
 210         }
 211     }
 212
 213 #undef chunk
 214
 215     /* now handle elst */
 216     if( p_track->p_elst )
 217     {
 218         demux_sys_t         *p_sys = p_demux->p_sys;
 219         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 220
 221         /* convert to offset */
 222         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 223               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 224             elst->i_media_time[p_track->i_elst] > 0 )
 225         {
 226             i_dts -= elst->i_media_time[p_track->i_elst];
 227         }
 228
 229         /* add i_elst_time */
 230         i_dts += p_track->i_elst_time * p_track->i_timescale /
 231             p_sys->i_timescale;
 232
 233         if( i_dts < 0 ) i_dts = 0;
 234     }
 235
 236     return INT64_C(1000000) * i_dts / p_track->i_timescale;
 237 }
 238
 239 static inline int64_t MP4_TrackGetPTSDelta( mp4_track_t *p_track )
 240 {
 241     mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
 242     unsigned int i_index = 0;
 243     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 244
 245     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 246         return -1;
 247
 248     for( i_index = 0;; i_index++ )
 249     {
 250         if( i_sample < ck->p_sample_count_pts[i_index] )
 251             return ck->p_sample_offset_pts[i_index] * INT64_C(1000000) /
 252                    (int64_t)p_track->i_timescale;
 253
 254         i_sample -= ck->p_sample_count_pts[i_index];
 255     }
 256 }
 257
 258 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 259 {
 260     return INT64_C(1000000) * p_sys->i_time / p_sys->i_timescale;
 261 }
 262
 263 static void LoadChapter( demux_t  *p_demux );
 264
 265 /*****************************************************************************
 266  * Open: check file and initializes MP4 structures
 267  *****************************************************************************/
 268 static int Open( vlc_object_t * p_this )
 269 {
 270     demux_t  *p_demux = (demux_t *)p_this;
 271     demux_sys_t     *p_sys;
 272
 273     const uint8_t   *p_peek;
 274
 275     MP4_Box_t       *p_ftyp;
 276     MP4_Box_t       *p_rmra;
 277     MP4_Box_t       *p_mvhd;
 278     MP4_Box_t       *p_trak;
 279
 280     unsigned int    i;
 281     bool      b_seekable;
 282     bool      b_enabled_es;
 283
 284     /* A little test to see if it could be a mp4 */
 285     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
 286
 287     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 288     {
 289         case FOURCC_ftyp:
 290         case FOURCC_moov:
 291         case FOURCC_foov:
 292         case FOURCC_moof:
 293         case FOURCC_mdat:
 294         case FOURCC_udta:
 295         case FOURCC_free:
 296         case FOURCC_skip:
 297         case FOURCC_wide:
 298         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 299             break;
 300          default:
 301             return VLC_EGENERIC;
 302     }
 303
 304     /* I need to seek */
 305     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 306     if( !b_seekable )
 307     {
 308         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 309         return VLC_EGENERIC;
 310     }
 311
 312     /*Set exported functions */
 313     p_demux->pf_demux = Demux;
 314     p_demux->pf_control = Control;
 315
 316     /* create our structure that will contains all data */
 317     p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
 318
 319     /* Now load all boxes ( except raw data ) */
 320     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 321     {
 322         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 323         goto error;
 324     }
 325
 326     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 327
 328     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 329     {
 330         switch( p_ftyp->data.p_ftyp->i_major_brand )
 331         {
 332             case( FOURCC_isom ):
 333                 msg_Dbg( p_demux,
 334                          "ISO Media file (isom) version %d.",
 335                          p_ftyp->data.p_ftyp->i_minor_version );
 336                 break;
 337             default:
 338                 msg_Dbg( p_demux,
 339                          "unrecognized major file specification (%4.4s).",
 340                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 341                 break;
 342         }
 343     }
 344     else
 345     {
 346         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 347     }
 348
 349     /* the file need to have one moov box */
 350     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 351     {
 352         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 353
 354         if( !p_foov )
 355         {
 356             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 357             goto error;
 358         }
 359         /* we have a free box as a moov, rename it */
 360         p_foov->i_type = FOURCC_moov;
 361     }
 362
 363     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 364     {
 365         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 366         int        i;
 367
 368         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 369
 370         input_thread_t *p_input = demux_GetParentInput( p_demux );
 371         input_item_t *p_current = input_GetItem( p_input );
 372
 373         input_item_node_t *p_subitems = input_item_node_Create( p_current );
 374
 375         for( i = 0; i < i_count; i++ )
 376         {
 377             MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 378             char      *psz_ref;
 379             uint32_t  i_ref_type;
 380
 381             if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
 382             {
 383                 continue;
 384             }
 385             i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 386
 387             msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 388                      psz_ref, (char*)&i_ref_type );
 389
 390             if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 391             {
 392                 if( strstr( psz_ref, "qt5gateQT" ) )
 393                 {
 394                     msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 395                     continue;
 396                 }
 397                 if( !strncmp( psz_ref, "http://", 7 ) ||
 398                     !strncmp( psz_ref, "rtsp://", 7 ) )
 399                 {
 400                     ;
 401                 }
 402                 else
 403                 {
 404                     char *psz_absolute;
 405                     char *psz_path = strdup( p_demux->psz_path );
 406                     char *end = strrchr( psz_path, '/' );
 407                     if( end ) end[1] = '\0';
 408                     else *psz_path = '\0';
 409
 410                     if( asprintf( &psz_absolute, "%s://%s%s",
 411                                   p_demux->psz_access, psz_path, psz_ref ) < 0 )
 412                     {
 413                         free( psz_ref );
 414                         free( psz_path );
 415                         vlc_object_release( p_input) ;
 416                         return VLC_ENOMEM;
 417                     }
 418
 419                     free( psz_ref );
 420                     psz_ref = psz_absolute;
 421                     free( psz_path );
 422                 }
 423                 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 424                 input_item_t *p_input = input_item_New( p_demux, psz_ref, NULL );
 425                 input_item_CopyOptions( p_current, p_input );
 426                 input_item_node_AppendItem( p_subitems, p_input );
 427                 vlc_gc_decref( p_input );
 428             }
 429             else
 430             {
 431                 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 432                          (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 433             }
 434             free( psz_ref );
 435         }
 436         input_item_node_PostAndDelete( p_subitems );
 437         vlc_object_release( p_input );
 438     }
 439
 440     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 441     {
 442         if( !p_rmra )
 443         {
 444             msg_Err( p_demux, "cannot find /moov/mvhd" );
 445             goto error;
 446         }
 447         else
 448         {
 449             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 450             p_demux->pf_demux = DemuxRef;
 451             return VLC_SUCCESS;
 452         }
 453     }
 454     else
 455     {
 456         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 457         if( p_sys->i_timescale == 0 )
 458         {
 459             msg_Err( p_this, "bad timescale" );
 460             goto error;
 461         }
 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, "found %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     if( p_sys->track == NULL )
 477         goto error;
 478     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 479
 480     /* Search the first chap reference (like quicktime) and
 481      * check that at least 1 stream is enabled */
 482     p_sys->p_tref_chap = NULL;
 483     b_enabled_es = false;
 484     for( i = 0; i < p_sys->i_tracks; i++ )
 485     {
 486         MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 487
 488
 489         MP4_Box_t *p_tkhd = MP4_BoxGet( p_trak, "tkhd" );
 490         if( p_tkhd && (p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED) )
 491             b_enabled_es = true;
 492
 493         MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
 494         if( p_chap && p_chap->data.p_tref_generic->i_entry_count > 0 && !p_sys->p_tref_chap )
 495             p_sys->p_tref_chap = p_chap;
 496     }
 497
 498     /* now process each track and extract all usefull information */
 499     for( i = 0; i < p_sys->i_tracks; i++ )
 500     {
 501         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 502         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak, !b_enabled_es );
 503
 504         if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
 505         {
 506             const char *psz_cat;
 507             switch( p_sys->track[i].fmt.i_cat )
 508             {
 509                 case( VIDEO_ES ):
 510                     psz_cat = "video";
 511                     break;
 512                 case( AUDIO_ES ):
 513                     psz_cat = "audio";
 514                     break;
 515                 case( SPU_ES ):
 516                     psz_cat = "subtitle";
 517                     break;
 518
 519                 default:
 520                     psz_cat = "unknown";
 521                     break;
 522             }
 523
 524             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 525                      p_sys->track[i].i_track_ID, psz_cat,
 526                      p_sys->track[i].b_enable ? "enable":"disable",
 527                      p_sys->track[i].fmt.psz_language ?
 528                      p_sys->track[i].fmt.psz_language : "undef" );
 529         }
 530         else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
 531         {
 532             msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
 533                      p_sys->track[i].i_track_ID,
 534                      p_sys->track[i].fmt.psz_language ?
 535                      p_sys->track[i].fmt.psz_language : "undef" );
 536         }
 537         else
 538         {
 539             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 540                      p_sys->track[i].i_track_ID );
 541         }
 542     }
 543
 544     /* */
 545     LoadChapter( p_demux );
 546
 547     return VLC_SUCCESS;
 548
 549 error:
 550     if( p_sys->p_root )
 551     {
 552         MP4_BoxFree( p_demux->s, p_sys->p_root );
 553     }
 554     free( p_sys );
 555     return VLC_EGENERIC;
 556 }
 557
 558 /*****************************************************************************
 559  * Demux: read packet and send them to decoders
 560  *****************************************************************************
 561  * TODO check for newly selected track (ie audio upt to now )
 562  *****************************************************************************/
 563 static int Demux( demux_t *p_demux )
 564 {
 565     demux_sys_t *p_sys = p_demux->p_sys;
 566     unsigned int i_track;
 567
 568
 569     unsigned int i_track_selected;
 570
 571     /* check for newly selected/unselected track */
 572     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 573          i_track++ )
 574     {
 575         mp4_track_t *tk = &p_sys->track[i_track];
 576         bool b;
 577
 578         if( !tk->b_ok || tk->b_chapter ||
 579             ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
 580         {
 581             continue;
 582         }
 583
 584         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 585
 586         if( tk->b_selected && !b )
 587         {
 588             MP4_TrackUnselect( p_demux, tk );
 589         }
 590         else if( !tk->b_selected && b)
 591         {
 592             MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 593         }
 594
 595         if( tk->b_selected )
 596         {
 597             i_track_selected++;
 598         }
 599     }
 600
 601     if( i_track_selected <= 0 )
 602     {
 603         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 604         if( p_sys->i_timescale > 0 )
 605         {
 606             int64_t i_length = (mtime_t)1000000 *
 607                                (mtime_t)p_sys->i_duration /
 608                                (mtime_t)p_sys->i_timescale;
 609             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 610                 return 0;
 611             return 1;
 612         }
 613
 614         msg_Warn( p_demux, "no track selected, exiting..." );
 615         return 0;
 616     }
 617
 618     /* */
 619     MP4_UpdateSeekpoint( p_demux );
 620
 621     /* first wait for the good time to read a packet */
 622     es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
 623
 624     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 625
 626     /* we will read 100ms for each stream so ...*/
 627     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 628
 629     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 630     {
 631         mp4_track_t *tk = &p_sys->track[i_track];
 632
 633         if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
 634             continue;
 635
 636         while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 637         {
 638 #if 0
 639             msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
 640                      MP4_TrackGetDTS( p_demux, tk ),
 641                      MP4_GetMoviePTS( p_sys ) );
 642 #endif
 643
 644             if( MP4_TrackSampleSize( tk ) > 0 )
 645             {
 646                 block_t *p_block;
 647                 int64_t i_delta;
 648
 649                 /* go,go go ! */
 650                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 651                 {
 652                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 653                               tk->i_track_ID );
 654                     MP4_TrackUnselect( p_demux, tk );
 655                     break;
 656                 }
 657
 658                 /* now read pes */
 659                 if( !(p_block =
 660                          stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
 661                 {
 662                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 663                               tk->i_track_ID );
 664                     MP4_TrackUnselect( p_demux, tk );
 665                     break;
 666                 }
 667
 668                 if( tk->b_drms && tk->p_drms )
 669                 {
 670                     if( tk->p_skcr )
 671                     {
 672                         uint32_t p_key[4];
 673                         drms_get_p_key( tk->p_drms, p_key );
 674
 675                         for( size_t i_pos = tk->p_skcr->data.p_skcr->i_init; i_pos < p_block->i_buffer; )
 676                         {
 677                             int n = __MIN( tk->p_skcr->data.p_skcr->i_encr, p_block->i_buffer - i_pos );
 678                             drms_decrypt( tk->p_drms, (uint32_t*)&p_block->p_buffer[i_pos], n, p_key );
 679                             i_pos += n;
 680                             i_pos += __MIN( tk->p_skcr->data.p_skcr->i_decr, p_block->i_buffer - i_pos );
 681                         }
 682                     }
 683                     else
 684                     {
 685                         drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
 686                                       p_block->i_buffer, NULL );
 687                     }
 688                 }
 689                 else if( tk->fmt.i_cat == SPU_ES )
 690                 {
 691                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
 692                         p_block->i_buffer >= 2 )
 693                     {
 694                         uint16_t i_size = GetWBE( p_block->p_buffer );
 695
 696                         if( i_size + 2 <= p_block->i_buffer )
 697                         {
 698                             char *p;
 699                             /* remove the length field, and append a '\0' */
 700                             memmove( &p_block->p_buffer[0],
 701                                      &p_block->p_buffer[2], i_size );
 702                             p_block->p_buffer[i_size] = '\0';
 703                             p_block->i_buffer = i_size + 1;
 704
 705                             /* convert \r -> \n */
 706                             while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
 707                             {
 708                                 *p = '\n';
 709                             }
 710                         }
 711                         else
 712                         {
 713                             /* Invalid */
 714                             p_block->i_buffer = 0;
 715                         }
 716                     }
 717                 }
 718                 /* dts */
 719                 p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
 720                 /* pts */
 721                 i_delta = MP4_TrackGetPTSDelta( tk );
 722                 if( i_delta != -1 )
 723                     p_block->i_pts = p_block->i_dts + i_delta;
 724                 else if( tk->fmt.i_cat != VIDEO_ES )
 725                     p_block->i_pts = p_block->i_dts;
 726                 else
 727                     p_block->i_pts = VLC_TS_INVALID;
 728
 729                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 730                     es_out_Send( p_demux->out, tk->p_es, p_block );
 731             }
 732
 733             /* Next sample */
 734             if( MP4_TrackNextSample( p_demux, tk ) )
 735                 break;
 736         }
 737     }
 738
 739     return 1;
 740 }
 741
 742 static void MP4_UpdateSeekpoint( demux_t *p_demux )
 743 {
 744     demux_sys_t *p_sys = p_demux->p_sys;
 745     int64_t i_time;
 746     int i;
 747     if( !p_sys->p_title )
 748         return;
 749     i_time = MP4_GetMoviePTS( p_sys );
 750     for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
 751     {
 752         if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
 753             break;
 754     }
 755     i--;
 756
 757     if( i != p_demux->info.i_seekpoint && i >= 0 )
 758     {
 759         p_demux->info.i_seekpoint = i;
 760         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
 761     }
 762 }
 763 /*****************************************************************************
 764  * Seek: Go to i_date
 765 ******************************************************************************/
 766 static int Seek( demux_t *p_demux, mtime_t i_date )
 767 {
 768     demux_sys_t *p_sys = p_demux->p_sys;
 769     unsigned int i_track;
 770
 771     /* First update update global time */
 772     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 773     p_sys->i_pcr  = i_date;
 774
 775     /* Now for each stream try to go to this time */
 776     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 777     {
 778         mp4_track_t *tk = &p_sys->track[i_track];
 779         MP4_TrackSeek( p_demux, tk, i_date );
 780     }
 781     MP4_UpdateSeekpoint( p_demux );
 782
 783     es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
 784
 785     return VLC_SUCCESS;
 786 }
 787
 788 /*****************************************************************************
 789  * Control:
 790  *****************************************************************************/
 791 static int Control( demux_t *p_demux, int i_query, va_list args )
 792 {
 793     demux_sys_t *p_sys = p_demux->p_sys;
 794
 795     double f, *pf;
 796     int64_t i64, *pi64;
 797
 798     switch( i_query )
 799     {
 800         case DEMUX_GET_POSITION:
 801             pf = (double*)va_arg( args, double * );
 802             if( p_sys->i_duration > 0 )
 803             {
 804                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 805             }
 806             else
 807             {
 808                 *pf = 0.0;
 809             }
 810             return VLC_SUCCESS;
 811
 812         case DEMUX_SET_POSITION:
 813             f = (double)va_arg( args, double );
 814             if( p_sys->i_timescale > 0 )
 815             {
 816                 i64 = (int64_t)( f * (double)1000000 *
 817                                  (double)p_sys->i_duration /
 818                                  (double)p_sys->i_timescale );
 819                 return Seek( p_demux, i64 );
 820             }
 821             else return VLC_SUCCESS;
 822
 823         case DEMUX_GET_TIME:
 824             pi64 = (int64_t*)va_arg( args, int64_t * );
 825             if( p_sys->i_timescale > 0 )
 826             {
 827                 *pi64 = (mtime_t)1000000 *
 828                         (mtime_t)p_sys->i_time /
 829                         (mtime_t)p_sys->i_timescale;
 830             }
 831             else *pi64 = 0;
 832             return VLC_SUCCESS;
 833
 834         case DEMUX_SET_TIME:
 835             i64 = (int64_t)va_arg( args, int64_t );
 836             return Seek( p_demux, i64 );
 837
 838         case DEMUX_GET_LENGTH:
 839             pi64 = (int64_t*)va_arg( args, int64_t * );
 840             if( p_sys->i_timescale > 0 )
 841             {
 842                 *pi64 = (mtime_t)1000000 *
 843                         (mtime_t)p_sys->i_duration /
 844                         (mtime_t)p_sys->i_timescale;
 845             }
 846             else *pi64 = 0;
 847             return VLC_SUCCESS;
 848
 849         case DEMUX_GET_FPS:
 850             pf = (double*)va_arg( args, double* );
 851             *pf = p_sys->f_fps;
 852             return VLC_SUCCESS;
 853
 854         case DEMUX_GET_META:
 855         {
 856             vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
 857             MP4_Box_t  *p_0xa9xxx;
 858
 859             MP4_Box_t  *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
 860             if( p_udta == NULL )
 861             {
 862                 p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 863                 if( p_udta == NULL )
 864                 {
 865                     return VLC_EGENERIC;
 866                 }
 867             }
 868
 869             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 870                  p_0xa9xxx = p_0xa9xxx->p_next )
 871             {
 872
 873                 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
 874                     continue;
 875
 876                 /* FIXME FIXME: should convert from whatever the character
 877                  * encoding of MP4 meta data is to UTF-8. */
 878 #define SET(fct) do { char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" ); \
 879     if( psz_utf ) { EnsureUTF8( psz_utf );  \
 880                     fct( p_meta, psz_utf ); free( psz_utf ); } } while(0)
 881
 882                 /* XXX Becarefull p_udta can have box that are not 0xa9xx */
 883                 switch( p_0xa9xxx->i_type )
 884                 {
 885                 case FOURCC_0xa9nam: /* Full name */
 886                     SET( vlc_meta_SetTitle );
 887                     break;
 888                 case FOURCC_0xa9aut:
 889                     SET( vlc_meta_SetArtist );
 890                     break;
 891                 case FOURCC_0xa9ART:
 892                     SET( vlc_meta_SetArtist );
 893                     break;
 894                 case FOURCC_0xa9cpy:
 895                     SET( vlc_meta_SetCopyright );
 896                     break;
 897                 case FOURCC_0xa9day: /* Creation Date */
 898                     SET( vlc_meta_SetDate );
 899                     break;
 900                 case FOURCC_0xa9des: /* Description */
 901                     SET( vlc_meta_SetDescription );
 902                     break;
 903                 case FOURCC_0xa9gen: /* Genre */
 904                     SET( vlc_meta_SetGenre );
 905                     break;
 906
 907                 case FOURCC_gnre:
 908                     if( p_0xa9xxx->data.p_gnre->i_genre < NUM_GENRES )
 909                         vlc_meta_SetGenre( p_meta, ppsz_genres[p_0xa9xxx->data.p_gnre->i_genre] );
 910                     break;
 911
 912                 case FOURCC_0xa9alb: /* Album */
 913                     SET( vlc_meta_SetAlbum );
 914                     break;
 915
 916                 case FOURCC_0xa9trk: /* Track */
 917                     SET( vlc_meta_SetTrackNum );
 918                     break;
 919                 case FOURCC_trkn:
 920                 {
 921                     char psz_trck[11];
 922                     snprintf( psz_trck, sizeof( psz_trck ), "%i",
 923                               p_0xa9xxx->data.p_trkn->i_track_number );
 924                     vlc_meta_SetTrackNum( p_meta, psz_trck );
 925                     break;
 926                 }
 927                 case FOURCC_0xa9cmt: /* Commment */
 928                     SET( vlc_meta_SetDescription );
 929                     break;
 930
 931                 case FOURCC_0xa9url: /* URL */
 932                     SET( vlc_meta_SetURL );
 933                     break;
 934
 935                 case FOURCC_0xa9enc: /* Encoded By */
 936                     SET( vlc_meta_SetEncodedBy );
 937                     break;
 938
 939                 case FOURCC_0xa9swr:
 940                 case FOURCC_0xa9inf: /* Information */
 941                 case FOURCC_0xa9dir: /* Director */
 942                 case FOURCC_0xa9dis: /* Disclaimer */
 943                 case FOURCC_0xa9req: /* Requirements */
 944                 case FOURCC_0xa9fmt: /* Original Format */
 945                 case FOURCC_0xa9dsa: /* Display Source As */
 946                 case FOURCC_0xa9hst: /* Host Computer */
 947                 case FOURCC_0xa9prd: /* Producer */
 948                 case FOURCC_0xa9prf: /* Performers */
 949                 case FOURCC_0xa9ope: /* Original Performer */
 950                 case FOURCC_0xa9src: /* Providers Source Content */
 951                 case FOURCC_0xa9wrt: /* Writer */
 952                 case FOURCC_0xa9com: /* Composer */
 953                 case FOURCC_WLOC:    /* Window Location */
 954                     /* TODO one day, but they aren't really meaningfull */
 955                     break;
 956 #undef SET
 957
 958                 default:
 959                     break;
 960                 }
 961             }
 962             return VLC_SUCCESS;
 963         }
 964
 965         case DEMUX_GET_TITLE_INFO:
 966         {
 967             input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
 968             int *pi_int    = (int*)va_arg( args, int* );
 969             int *pi_title_offset = (int*)va_arg( args, int* );
 970             int *pi_seekpoint_offset = (int*)va_arg( args, int* );
 971
 972             if( !p_sys->p_title )
 973                 return VLC_EGENERIC;
 974
 975             *pi_int = 1;
 976             *ppp_title = malloc( sizeof( input_title_t**) );
 977             (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
 978             *pi_title_offset = 0;
 979             *pi_seekpoint_offset = 0;
 980             return VLC_SUCCESS;
 981         }
 982         case DEMUX_SET_TITLE:
 983         {
 984             const int i_title = (int)va_arg( args, int );
 985             if( !p_sys->p_title || i_title != 0 )
 986                 return VLC_EGENERIC;
 987             return VLC_SUCCESS;
 988         }
 989         case DEMUX_SET_SEEKPOINT:
 990         {
 991             const int i_seekpoint = (int)va_arg( args, int );
 992             if( !p_sys->p_title )
 993                 return VLC_EGENERIC;
 994             return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
 995         }
 996
 997         case DEMUX_SET_NEXT_DEMUX_TIME:
 998         case DEMUX_SET_GROUP:
 999         case DEMUX_HAS_UNSUPPORTED_META:
1000         case DEMUX_GET_ATTACHMENTS:
1001             return VLC_EGENERIC;
1002
1003         default:
1004             msg_Warn( p_demux, "control query %u unimplemented", i_query );
1005             return VLC_EGENERIC;
1006     }
1007 }
1008
1009 /*****************************************************************************
1010  * Close: frees unused data
1011  *****************************************************************************/
1012 static void Close ( vlc_object_t * p_this )
1013 {
1014     demux_t *  p_demux = (demux_t *)p_this;
1015     demux_sys_t *p_sys = p_demux->p_sys;
1016     unsigned int i_track;
1017
1018     msg_Dbg( p_demux, "freeing all memory" );
1019
1020     MP4_BoxFree( p_demux->s, p_sys->p_root );
1021     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1022     {
1023         MP4_TrackDestroy(  &p_sys->track[i_track] );
1024     }
1025     FREENULL( p_sys->track );
1026
1027     if( p_sys->p_title )
1028         vlc_input_title_Delete( p_sys->p_title );
1029
1030     free( p_sys );
1031 }
1032
1033
1034
1035 /****************************************************************************
1036  * Local functions, specific to vlc
1037  ****************************************************************************/
1038 /* Chapters */
1039 static void LoadChapterGpac( demux_t  *p_demux, MP4_Box_t *p_chpl )
1040 {
1041     demux_sys_t *p_sys = p_demux->p_sys;
1042     int i;
1043
1044     p_sys->p_title = vlc_input_title_New();
1045     for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
1046     {
1047         seekpoint_t *s = vlc_seekpoint_New();
1048
1049         s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
1050         EnsureUTF8( s->psz_name );
1051         s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
1052         TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1053     }
1054 }
1055 static void LoadChapterApple( demux_t  *p_demux, mp4_track_t *tk )
1056 {
1057     demux_sys_t *p_sys = p_demux->p_sys;
1058
1059     for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1060     {
1061         const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1062         const int64_t i_pts_delta = MP4_TrackGetPTSDelta( tk );
1063         const unsigned int i_size = MP4_TrackSampleSize( tk );
1064
1065         if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1066         {
1067             char p_buffer[256];
1068             const int i_read = stream_Read( p_demux->s, p_buffer, __MIN( sizeof(p_buffer), i_size ) );
1069             const int i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1070
1071             if( i_len > 0 )
1072             {
1073                 seekpoint_t *s = vlc_seekpoint_New();
1074
1075                 s->psz_name = strndup( &p_buffer[2], i_len );
1076                 EnsureUTF8( s->psz_name );
1077
1078                 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1079
1080                 if( !p_sys->p_title )
1081                     p_sys->p_title = vlc_input_title_New();
1082                 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1083             }
1084         }
1085         if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1086                               tk->chunk[tk->i_chunk].i_sample_count )
1087             tk->i_chunk++;
1088     }
1089 }
1090 static void LoadChapter( demux_t  *p_demux )
1091 {
1092     demux_sys_t *p_sys = p_demux->p_sys;
1093     MP4_Box_t *p_chpl;
1094
1095     if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
1096     {
1097         LoadChapterGpac( p_demux, p_chpl );
1098     }
1099     else if( p_sys->p_tref_chap )
1100     {
1101         MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1102         unsigned int i, j;
1103
1104         /* Load the first subtitle track like quicktime */
1105         for( i = 0; i < p_chap->i_entry_count; i++ )
1106         {
1107             for( j = 0; j < p_sys->i_tracks; j++ )
1108             {
1109                 mp4_track_t *tk = &p_sys->track[j];
1110                 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1111                     tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
1112                     break;
1113             }
1114             if( j < p_sys->i_tracks )
1115             {
1116                 LoadChapterApple( p_demux, &p_sys->track[j] );
1117                 break;
1118             }
1119         }
1120     }
1121 }
1122
1123 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1124 static int TrackCreateChunksIndex( demux_t *p_demux,
1125                                    mp4_track_t *p_demux_track )
1126 {
1127     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1128     MP4_Box_t *p_stsc;
1129
1130     unsigned int i_chunk;
1131     unsigned int i_index, i_last;
1132
1133     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1134           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1135         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1136     {
1137         return( VLC_EGENERIC );
1138     }
1139
1140     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
1141     if( !p_demux_track->i_chunk_count )
1142     {
1143         msg_Warn( p_demux, "no chunk defined" );
1144         return( VLC_EGENERIC );
1145     }
1146     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1147                                    sizeof( mp4_chunk_t ) );
1148     if( p_demux_track->chunk == NULL )
1149     {
1150         return VLC_ENOMEM;
1151     }
1152
1153     /* first we read chunk offset */
1154     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1155     {
1156         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1157
1158         ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
1159
1160         ck->i_first_dts = 0;
1161         ck->p_sample_count_dts = NULL;
1162         ck->p_sample_delta_dts = NULL;
1163         ck->p_sample_count_pts = NULL;
1164         ck->p_sample_offset_pts = NULL;
1165     }
1166
1167     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1168         to be used for the sample XXX begin to 1
1169         We construct it begining at the end */
1170     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1171     i_index = p_stsc->data.p_stsc->i_entry_count;
1172     if( !i_index )
1173     {
1174         msg_Warn( p_demux, "cannot read chunk table or table empty" );
1175         return( VLC_EGENERIC );
1176     }
1177
1178     while( i_index-- )
1179     {
1180         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1181              i_chunk < i_last; i_chunk++ )
1182         {
1183             if( i_chunk >= p_demux_track->i_chunk_count )
1184             {
1185                 msg_Warn( p_demux, "corrupted chunk table" );
1186                 return VLC_EGENERIC;
1187             }
1188
1189             p_demux_track->chunk[i_chunk].i_sample_description_index =
1190                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
1191             p_demux_track->chunk[i_chunk].i_sample_count =
1192                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
1193         }
1194         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1195     }
1196
1197     p_demux_track->chunk[0].i_sample_first = 0;
1198     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1199     {
1200         p_demux_track->chunk[i_chunk].i_sample_first =
1201             p_demux_track->chunk[i_chunk-1].i_sample_first +
1202                 p_demux_track->chunk[i_chunk-1].i_sample_count;
1203     }
1204
1205     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1206              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1207
1208     return VLC_SUCCESS;
1209 }
1210
1211 static int TrackCreateSamplesIndex( demux_t *p_demux,
1212                                     mp4_track_t *p_demux_track )
1213 {
1214     MP4_Box_t *p_box;
1215     MP4_Box_data_stsz_t *stsz;
1216     MP4_Box_data_stts_t *stts;
1217     /* TODO use also stss and stsh table for seeking */
1218     /* FIXME use edit table */
1219     int64_t i_sample;
1220     int64_t i_chunk;
1221
1222     int64_t i_index;
1223     int64_t i_index_sample_used;
1224
1225     int64_t i_next_dts;
1226
1227     /* Find stsz
1228      *  Gives the sample size for each samples. There is also a stz2 table
1229      *  (compressed form) that we need to implement TODO */
1230     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1231     if( !p_box )
1232     {
1233         /* FIXME and stz2 */
1234         msg_Warn( p_demux, "cannot find STSZ box" );
1235         return VLC_EGENERIC;
1236     }
1237     stsz = p_box->data.p_stsz;
1238
1239     /* Find stts
1240      *  Gives mapping between sample and decoding time
1241      */
1242     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1243     if( !p_box )
1244     {
1245         msg_Warn( p_demux, "cannot find STTS box" );
1246         return VLC_EGENERIC;
1247     }
1248     stts = p_box->data.p_stts;
1249
1250     /* Use stsz table to create a sample number -> sample size table */
1251     p_demux_track->i_sample_count = stsz->i_sample_count;
1252     if( stsz->i_sample_size )
1253     {
1254         /* 1: all sample have the same size, so no need to construct a table */
1255         p_demux_track->i_sample_size = stsz->i_sample_size;
1256         p_demux_track->p_sample_size = NULL;
1257     }
1258     else
1259     {
1260         /* 2: each sample can have a different size */
1261         p_demux_track->i_sample_size = 0;
1262         p_demux_track->p_sample_size =
1263             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1264         if( p_demux_track->p_sample_size == NULL )
1265             return VLC_ENOMEM;
1266
1267         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1268         {
1269             p_demux_track->p_sample_size[i_sample] =
1270                     stsz->i_entry_size[i_sample];
1271         }
1272     }
1273
1274     /* Use stts table to create a sample number -> dts table.
1275      * XXX: if we don't want to waste too much memory, we can't expand
1276      *  the box! so each chunk will contain an "extract" of this table
1277      *  for fast research (problem with raw stream where a sample is sometime
1278      *  just channels*bits_per_sample/8 */
1279
1280     i_next_dts = 0;
1281     i_index = 0; i_index_sample_used = 0;
1282     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1283     {
1284         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1285         int64_t i_entry, i_sample_count, i;
1286
1287         /* save first dts */
1288         ck->i_first_dts = i_next_dts;
1289         ck->i_last_dts  = i_next_dts;
1290
1291         /* count how many entries are needed for this chunk
1292          * for p_sample_delta_dts and p_sample_count_dts */
1293         i_sample_count = ck->i_sample_count;
1294
1295         i_entry = 0;
1296         while( i_sample_count > 0 )
1297         {
1298             i_sample_count -= stts->i_sample_count[i_index+i_entry];
1299             /* don't count already used sample in this entry */
1300             if( i_entry == 0 )
1301                 i_sample_count += i_index_sample_used;
1302
1303             i_entry++;
1304         }
1305
1306         /* allocate them */
1307         ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1308         ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1309
1310         if( !ck->p_sample_count_dts || !ck->p_sample_delta_dts )
1311             return VLC_ENOMEM;
1312
1313         /* now copy */
1314         i_sample_count = ck->i_sample_count;
1315         for( i = 0; i < i_entry; i++ )
1316         {
1317             int64_t i_used;
1318             int64_t i_rest;
1319
1320             i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1321
1322             i_used = __MIN( i_rest, i_sample_count );
1323
1324             i_index_sample_used += i_used;
1325             i_sample_count -= i_used;
1326             i_next_dts += i_used * stts->i_sample_delta[i_index];
1327
1328             ck->p_sample_count_dts[i] = i_used;
1329             ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1330             if( i_used > 0 )
1331                 ck->i_last_dts = i_next_dts - ck->p_sample_delta_dts[i];
1332
1333             if( i_index_sample_used >= stts->i_sample_count[i_index] )
1334             {
1335                 i_index++;
1336                 i_index_sample_used = 0;
1337             }
1338         }
1339     }
1340
1341     /* Find ctts
1342      *  Gives the delta between decoding time (dts) and composition table (pts)
1343      */
1344     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1345     if( p_box )
1346     {
1347         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1348
1349         msg_Warn( p_demux, "CTTS table" );
1350
1351         /* Create pts-dts table per chunk */
1352         i_index = 0; i_index_sample_used = 0;
1353         for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1354         {
1355             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1356             int64_t i_entry, i_sample_count, i;
1357
1358             /* count how many entries are needed for this chunk
1359              * for p_sample_delta_dts and p_sample_count_dts */
1360             i_sample_count = ck->i_sample_count;
1361
1362             i_entry = 0;
1363             while( i_sample_count > 0 )
1364             {
1365                 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1366
1367                 /* don't count already used sample in this entry */
1368                 if( i_entry == 0 )
1369                     i_sample_count += i_index_sample_used;
1370
1371                 i_entry++;
1372             }
1373
1374             /* allocate them */
1375             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1376             ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1377             if( !ck->p_sample_count_pts || !ck->p_sample_offset_pts )
1378                 return VLC_ENOMEM;
1379
1380             /* now copy */
1381             i_sample_count = ck->i_sample_count;
1382             for( i = 0; i < i_entry; i++ )
1383             {
1384                 int64_t i_used;
1385                 int64_t i_rest;
1386
1387                 i_rest = ctts->i_sample_count[i_index] -
1388                     i_index_sample_used;
1389
1390                 i_used = __MIN( i_rest, i_sample_count );
1391
1392                 i_index_sample_used += i_used;
1393                 i_sample_count -= i_used;
1394
1395                 ck->p_sample_count_pts[i] = i_used;
1396                 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1397
1398                 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1399                 {
1400                     i_index++;
1401                     i_index_sample_used = 0;
1402                 }
1403             }
1404         }
1405     }
1406
1407     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:%"PRId64"s",
1408              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1409              i_next_dts / p_demux_track->i_timescale );
1410
1411     return VLC_SUCCESS;
1412 }
1413
1414 /**
1415  * It computes the sample rate for a video track using the given sample
1416  * description index
1417  */
1418 static void TrackGetESSampleRate( unsigned *pi_num, unsigned *pi_den,
1419                                   const mp4_track_t *p_track,
1420                                   unsigned i_sd_index,
1421                                   unsigned i_chunk )
1422 {
1423     *pi_num = 0;
1424     *pi_den = 0;
1425
1426     if( p_track->i_chunk_count <= 0 )
1427         return;
1428
1429     /* */
1430     const mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
1431     while( p_chunk > &p_track->chunk[0] &&
1432            p_chunk[-1].i_sample_description_index == i_sd_index )
1433     {
1434         p_chunk--;
1435     }
1436
1437     uint64_t i_sample = 0;
1438     uint64_t i_first_dts = p_chunk->i_first_dts;
1439     uint64_t i_last_dts;
1440     do
1441     {
1442         i_sample += p_chunk->i_sample_count;
1443         i_last_dts = p_chunk->i_last_dts;
1444         p_chunk++;
1445     }
1446     while( p_chunk < &p_track->chunk[p_track->i_chunk_count] &&
1447            p_chunk->i_sample_description_index == i_sd_index );
1448
1449     if( i_sample > 1 && i_first_dts < i_last_dts )
1450         vlc_ureduce( pi_num, pi_den,
1451                      ( i_sample - 1) *  p_track->i_timescale,
1452                      i_last_dts - i_first_dts,
1453                      UINT16_MAX);
1454 }
1455
1456 /*
1457  * TrackCreateES:
1458  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1459  */
1460 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1461                           unsigned int i_chunk, es_out_id_t **pp_es )
1462 {
1463     const unsigned i_sample_description_index =
1464         p_track->chunk[i_chunk].i_sample_description_index;
1465     MP4_Box_t   *p_sample;
1466     MP4_Box_t   *p_esds;
1467     MP4_Box_t   *p_frma;
1468     MP4_Box_t   *p_enda;
1469
1470     if( pp_es )
1471         *pp_es = NULL;
1472
1473     if( !i_sample_description_index )
1474     {
1475         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1476                   p_track->i_track_ID );
1477         return VLC_EGENERIC;
1478     }
1479
1480     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1481                             i_sample_description_index - 1 );
1482
1483     if( !p_sample ||
1484         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1485     {
1486         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1487                   p_track->i_track_ID );
1488         return VLC_EGENERIC;
1489     }
1490
1491     p_track->p_sample = p_sample;
1492
1493     if( ( p_frma = MP4_BoxGet( p_track->p_sample, "sinf/frma" ) ) )
1494     {
1495         msg_Warn( p_demux, "Original Format Box: %4.4s", (char *)&p_frma->data.p_frma->i_type );
1496
1497         p_sample->i_type = p_frma->data.p_frma->i_type;
1498     }
1499
1500     p_enda = MP4_BoxGet( p_sample, "wave/enda" );
1501     if( !p_enda )
1502         p_enda = MP4_BoxGet( p_sample, "enda" );
1503
1504     if( p_track->fmt.i_cat == AUDIO_ES && ( p_track->i_sample_size == 1 || p_track->i_sample_size == 2 ) )
1505     {
1506         MP4_Box_data_sample_soun_t *p_soun;
1507
1508         p_soun = p_sample->data.p_sample_soun;
1509
1510         if( p_soun->i_qt_version == 0 )
1511         {
1512             switch( p_sample->i_type )
1513             {
1514                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1515                     p_soun->i_qt_version = 1;
1516                     p_soun->i_sample_per_packet = 64;
1517                     p_soun->i_bytes_per_packet  = 34;
1518                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1519                     p_soun->i_bytes_per_sample  = 2;
1520                     break;
1521                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1522                     p_soun->i_qt_version = 1;
1523                     p_soun->i_sample_per_packet = 6;
1524                     p_soun->i_bytes_per_packet  = 2;
1525                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1526                     p_soun->i_bytes_per_sample  = 2;
1527                     break;
1528                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1529                     p_soun->i_qt_version = 1;
1530                     p_soun->i_sample_per_packet = 12;
1531                     p_soun->i_bytes_per_packet  = 2;
1532                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1533                     p_soun->i_bytes_per_sample  = 2;
1534                     break;
1535                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1536                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1537                     p_soun->i_samplesize = 8;
1538                     break;
1539                 case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
1540                 case VLC_FOURCC( 'r', 'a', 'w', ' ' ):
1541                 case VLC_FOURCC( 't', 'w', 'o', 's' ):
1542                 case VLC_FOURCC( 's', 'o', 'w', 't' ):
1543                     /* What would be the fun if you could trust the .mov */
1544                     p_track->i_sample_size = ((p_soun->i_samplesize+7)/8) * p_soun->i_channelcount;
1545                     break;
1546                 default:
1547                     break;
1548             }
1549
1550         }
1551         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1552         {
1553             p_soun->i_qt_version = 0;
1554         }
1555     }
1556     else if( p_track->fmt.i_cat == AUDIO_ES && p_sample->data.p_sample_soun->i_qt_version == 1 )
1557     {
1558         MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1559
1560         switch( p_sample->i_type )
1561         {
1562             case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1563             case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1564             {
1565                 if( p_track->i_sample_size > 1 )
1566                     p_soun->i_qt_version = 0;
1567                 break;
1568             }
1569             case( VLC_FOURCC( 'a', 'c', '-', '3' ) ):
1570             case( VLC_FOURCC( 'e', 'c', '-', '3' ) ):
1571             case( VLC_FOURCC( 'm', 's', 0x20, 0x00 ) ):
1572                 p_soun->i_qt_version = 0;
1573                 break;
1574             default:
1575                 break;
1576         }
1577     }
1578
1579     /* */
1580     switch( p_track->fmt.i_cat )
1581     {
1582     case VIDEO_ES:
1583         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1584         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1585         p_track->fmt.video.i_bits_per_pixel =
1586             p_sample->data.p_sample_vide->i_depth;
1587
1588         /* fall on display size */
1589         if( p_track->fmt.video.i_width <= 0 )
1590             p_track->fmt.video.i_width = p_track->i_width;
1591         if( p_track->fmt.video.i_height <= 0 )
1592             p_track->fmt.video.i_height = p_track->i_height;
1593
1594         /* Find out apect ratio from display size */
1595         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1596             /* Work-around buggy muxed files */
1597             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1598         {
1599             p_track->fmt.video.i_sar_num = p_track->i_width  * p_track->fmt.video.i_height;
1600             p_track->fmt.video.i_sar_den = p_track->i_height * p_track->fmt.video.i_width;
1601         }
1602
1603         /* Support for cropping (eg. in H263 files) */
1604         p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1605         p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1606
1607         /* Frame rate */
1608         TrackGetESSampleRate( &p_track->fmt.video.i_frame_rate,
1609                               &p_track->fmt.video.i_frame_rate_base,
1610                               p_track, i_sample_description_index, i_chunk );
1611         p_demux->p_sys->f_fps = (float)p_track->fmt.video.i_frame_rate /
1612                                 (float)p_track->fmt.video.i_frame_rate_base;
1613         break;
1614
1615     case AUDIO_ES:
1616         p_track->fmt.audio.i_channels =
1617             p_sample->data.p_sample_soun->i_channelcount;
1618         p_track->fmt.audio.i_rate =
1619             p_sample->data.p_sample_soun->i_sampleratehi;
1620         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1621             p_sample->data.p_sample_soun->i_sampleratehi *
1622                 p_sample->data.p_sample_soun->i_samplesize;
1623         p_track->fmt.audio.i_bitspersample =
1624             p_sample->data.p_sample_soun->i_samplesize;
1625
1626         if( p_track->i_sample_size != 0 &&
1627             p_sample->data.p_sample_soun->i_qt_version == 1 && p_sample->data.p_sample_soun->i_sample_per_packet <= 0 )
1628         {
1629             msg_Err( p_demux, "Invalid sample per packet value for qt_version 1" );
1630             return VLC_EGENERIC;
1631         }
1632         break;
1633
1634     default:
1635         break;
1636     }
1637
1638
1639     /* It's a little ugly but .. there are special cases */
1640     switch( p_sample->i_type )
1641     {
1642         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1643         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1644         {
1645             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1646             break;
1647         }
1648         case( VLC_FOURCC( 'a', 'c', '-', '3' ) ):
1649         {
1650             MP4_Box_t *p_dac3_box = MP4_BoxGet(  p_sample, "dac3", 0 );
1651
1652             p_track->fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
1653             if( p_dac3_box )
1654             {
1655                 static const int pi_bitrate[] = {
1656                      32,  40,  48,  56,
1657                      64,  80,  96, 112,
1658                     128, 160, 192, 224,
1659                     256, 320, 384, 448,
1660                     512, 576, 640,
1661                 };
1662                 MP4_Box_data_dac3_t *p_dac3 = p_dac3_box->data.p_dac3;
1663                 p_track->fmt.audio.i_channels = 0;
1664                 p_track->fmt.i_bitrate = 0;
1665                 if( p_dac3->i_bitrate_code < sizeof(pi_bitrate)/sizeof(*pi_bitrate) )
1666                     p_track->fmt.i_bitrate = pi_bitrate[p_dac3->i_bitrate_code] * 1000;
1667                 p_track->fmt.audio.i_bitspersample = 0;
1668             }
1669             break;
1670         }
1671         case( VLC_FOURCC( 'e', 'c', '-', '3' ) ):
1672         {
1673             p_track->fmt.i_codec = VLC_FOURCC( 'e', 'a', 'c', '3' );
1674             break;
1675         }
1676
1677         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1678         case( VLC_FOURCC( 'N', 'O', 'N', 'E' ) ):
1679         {
1680             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1681
1682             if(p_soun && (p_soun->i_samplesize+7)/8 == 1 )
1683                 p_track->fmt.i_codec = VLC_FOURCC( 'u', '8', ' ', ' ' );
1684             else
1685                 p_track->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
1686
1687             /* Buggy files workaround */
1688             if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1689                 p_sample->data.p_sample_soun->i_sampleratehi) )
1690             {
1691                 MP4_Box_data_sample_soun_t *p_soun =
1692                     p_sample->data.p_sample_soun;
1693
1694                 msg_Warn( p_demux, "i_timescale (%"PRIu64") != i_sampleratehi "
1695                           "(%u), making both equal (report any problem).",
1696                           p_track->i_timescale, p_soun->i_sampleratehi );
1697
1698                 if( p_soun->i_sampleratehi )
1699                     p_track->i_timescale = p_soun->i_sampleratehi;
1700                 else
1701                     p_soun->i_sampleratehi = p_track->i_timescale;
1702             }
1703             break;
1704         }
1705
1706         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1707             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1708             break;
1709
1710         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1711         case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1712             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1713             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1714             /* FIXME UTF-8 doesn't work here ? */
1715             if( p_track->b_mac_encoding )
1716                 p_track->fmt.subs.psz_encoding = strdup( "MAC" );
1717             else
1718                 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1719             break;
1720
1721         case VLC_FOURCC('y','v','1','2'):
1722             p_track->fmt.i_codec = VLC_FOURCC('Y','V','1','2');
1723             break;
1724         case VLC_FOURCC('y','u','v','2'):
1725             p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
1726             break;
1727
1728         case VLC_FOURCC('i','n','2','4'):
1729             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1730                                     VLC_FOURCC('4','2','n','i') : VLC_FOURCC('i','n','2','4');
1731             break;
1732         case VLC_FOURCC('f','l','3','2'):
1733             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1734                                     VLC_CODEC_F32L : VLC_CODEC_F32B;
1735             break;
1736         case VLC_FOURCC('f','l','6','4'):
1737             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1738                                     VLC_CODEC_F64L : VLC_CODEC_F64B;
1739             break;
1740
1741         default:
1742             p_track->fmt.i_codec = p_sample->i_type;
1743             break;
1744     }
1745
1746     /* now see if esds is present and if so create a data packet
1747         with decoder_specific_info  */
1748 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1749     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1750           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1751         ( p_esds->data.p_esds )&&
1752         ( p_decconfig ) )
1753     {
1754         /* First update information based on i_objectTypeIndication */
1755         switch( p_decconfig->i_objectTypeIndication )
1756         {
1757             case( 0x20 ): /* MPEG4 VIDEO */
1758                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1759                 break;
1760             case( 0x40):
1761                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1762                 if( p_decconfig->i_decoder_specific_info_len >= 2 &&
1763                      p_decconfig->p_decoder_specific_info[0]       == 0xF8 &&
1764                     (p_decconfig->p_decoder_specific_info[1]&0xE0) == 0x80 )
1765                 {
1766                     p_track->fmt.i_codec = VLC_CODEC_ALS;
1767                 }
1768                 break;
1769             case( 0x60):
1770             case( 0x61):
1771             case( 0x62):
1772             case( 0x63):
1773             case( 0x64):
1774             case( 0x65): /* MPEG2 video */
1775                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1776                 break;
1777             /* Theses are MPEG2-AAC */
1778             case( 0x66): /* main profile */
1779             case( 0x67): /* Low complexity profile */
1780             case( 0x68): /* Scaleable Sampling rate profile */
1781                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1782                 break;
1783             /* true MPEG 2 audio */
1784             case( 0x69):
1785                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1786                 break;
1787             case( 0x6a): /* MPEG1 video */
1788                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1789                 break;
1790             case( 0x6b): /* MPEG1 audio */
1791                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1792                 break;
1793             case( 0x6c ): /* jpeg */
1794                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1795                 break;
1796             case( 0x6d ): /* png */
1797                 p_track->fmt.i_codec = VLC_FOURCC( 'p','n','g',' ' );
1798                 break;
1799             case( 0x6e ): /* jpeg200 */
1800                 p_track->fmt.i_codec = VLC_FOURCC( 'M','J','2','C' );
1801                 break;
1802             case( 0xa3 ): /* vc1 */
1803                 p_track->fmt.i_codec = VLC_FOURCC( 'W','V','C','1' );
1804                 break;
1805
1806             /* Private ID */
1807             case( 0xe0 ): /* NeroDigital: dvd subs */
1808                 if( p_track->fmt.i_cat == SPU_ES )
1809                 {
1810                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1811                     if( p_track->i_width > 0 )
1812                         p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1813                     if( p_track->i_height > 0 )
1814                         p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1815                     break;
1816                 }
1817             case( 0xe1 ): /* QCelp for 3gp */
1818                 if( p_track->fmt.i_cat == AUDIO_ES )
1819                 {
1820                     p_track->fmt.i_codec = VLC_FOURCC( 'Q','c','l','p' );
1821                 }
1822                 break;
1823
1824             /* Fallback */
1825             default:
1826                 /* Unknown entry, but don't touch i_fourcc */
1827                 msg_Warn( p_demux,
1828                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1829                           p_decconfig->i_objectTypeIndication,
1830                           p_track->i_track_ID );
1831                 break;
1832         }
1833         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1834         if( p_track->fmt.i_extra > 0 )
1835         {
1836             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1837             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1838                     p_track->fmt.i_extra );
1839         }
1840     }
1841     else
1842     {
1843         switch( p_sample->i_type )
1844         {
1845             /* qt decoder, send the complete chunk */
1846             case VLC_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
1847             case VLC_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
1848             case VLC_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
1849             case VLC_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
1850             case VLC_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
1851             case VLC_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
1852             case VLC_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
1853             case VLC_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
1854             case VLC_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
1855             case VLC_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
1856             case VLC_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
1857             case VLC_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
1858                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1859                 break;
1860             /* qt decoder, send the complete chunk */
1861             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1862             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1863             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1864             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1865             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1866                 p_track->fmt.i_extra =
1867                     p_sample->data.p_sample_vide->i_qt_image_description;
1868                 if( p_track->fmt.i_extra > 0 )
1869                 {
1870                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1871                     memcpy( p_track->fmt.p_extra,
1872                             p_sample->data.p_sample_vide->p_qt_image_description,
1873                             p_track->fmt.i_extra);
1874                 }
1875                 break;
1876             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1877             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1878             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1879             case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1880                 p_track->fmt.i_extra =
1881                     p_sample->data.p_sample_soun->i_qt_description;
1882                 if( p_track->fmt.i_extra > 0 )
1883                 {
1884                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1885                     memcpy( p_track->fmt.p_extra,
1886                             p_sample->data.p_sample_soun->p_qt_description,
1887                             p_track->fmt.i_extra);
1888                 }
1889                 break;
1890
1891             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1892             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1893             {
1894                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1895
1896                 if( p_avcC )
1897                 {
1898                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1899                     if( p_track->fmt.i_extra > 0 )
1900                     {
1901                         p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1902                         memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1903                                 p_track->fmt.i_extra );
1904                     }
1905                 }
1906                 else
1907                 {
1908                     msg_Err( p_demux, "missing avcC" );
1909                 }
1910                 break;
1911             }
1912
1913             case VLC_FOURCC('m','s',0x00,0x02):
1914             case VLC_FOURCC('m','s',0x00,0x11):
1915             case VLC_FOURCC('Q','c','l','p'):
1916                 p_track->fmt.audio.i_blockalign = p_sample->data.p_sample_soun->i_bytes_per_frame;
1917                 break;
1918
1919             default:
1920                 break;
1921         }
1922     }
1923
1924 #undef p_decconfig
1925
1926     if( pp_es )
1927         *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1928
1929     return VLC_SUCCESS;
1930 }
1931
1932 /* given a time it return sample/chunk
1933  * it also update elst field of the track
1934  */
1935 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1936                                    int64_t i_start, uint32_t *pi_chunk,
1937                                    uint32_t *pi_sample )
1938 {
1939     demux_sys_t *p_sys = p_demux->p_sys;
1940     MP4_Box_t   *p_box_stss;
1941     uint64_t     i_dts;
1942     unsigned int i_sample;
1943     unsigned int i_chunk;
1944     int          i_index;
1945
1946     /* FIXME see if it's needed to check p_track->i_chunk_count */
1947     if( p_track->i_chunk_count == 0 )
1948         return( VLC_EGENERIC );
1949
1950     /* handle elst (find the correct one) */
1951     MP4_TrackSetELST( p_demux, p_track, i_start );
1952     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1953     {
1954         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1955         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1956
1957         /* now calculate i_start for this elst */
1958         /* offset */
1959         i_start -= p_track->i_elst_time * INT64_C(1000000) / p_sys->i_timescale;
1960         if( i_start < 0 )
1961         {
1962             *pi_chunk = 0;
1963             *pi_sample= 0;
1964
1965             return VLC_SUCCESS;
1966         }
1967         /* to track time scale */
1968         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1969         /* add elst offset */
1970         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1971              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1972             elst->i_media_time[p_track->i_elst] > 0 )
1973         {
1974             i_start += elst->i_media_time[p_track->i_elst];
1975         }
1976
1977         msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
1978                  "ms (track)", p_track->i_elst,
1979                  i_mvt * 1000 / p_sys->i_timescale,
1980                  i_start * 1000 / p_track->i_timescale );
1981     }
1982     else
1983     {
1984         /* convert absolute time to in timescale unit */
1985         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1986     }
1987
1988     /* we start from sample 0/chunk 0, hope it won't take too much time */
1989     /* *** find good chunk *** */
1990     for( i_chunk = 0; ; i_chunk++ )
1991     {
1992         if( i_chunk + 1 >= p_track->i_chunk_count )
1993         {
1994             /* at the end and can't check if i_start in this chunk,
1995                it will be check while searching i_sample */
1996             i_chunk = p_track->i_chunk_count - 1;
1997             break;
1998         }
1999
2000         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
2001             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
2002         {
2003             break;
2004         }
2005     }
2006
2007     /* *** find sample in the chunk *** */
2008     i_sample = p_track->chunk[i_chunk].i_sample_first;
2009     i_dts    = p_track->chunk[i_chunk].i_first_dts;
2010     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
2011     {
2012         if( i_dts +
2013             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
2014             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
2015         {
2016             i_dts    +=
2017                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
2018                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
2019
2020             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
2021             i_index++;
2022         }
2023         else
2024         {
2025             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
2026             {
2027                 break;
2028             }
2029             i_sample += ( i_start - i_dts ) /
2030                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
2031             break;
2032         }
2033     }
2034
2035     if( i_sample >= p_track->i_sample_count )
2036     {
2037         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
2038                   "(seeking too far) chunk=%d sample=%d",
2039                   p_track->i_track_ID, i_chunk, i_sample );
2040         return( VLC_EGENERIC );
2041     }
2042
2043
2044     /* *** Try to find nearest sync points *** */
2045     if( ( p_box_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
2046     {
2047         MP4_Box_data_stss_t *p_stss = p_box_stss->data.p_stss;
2048         msg_Dbg( p_demux, "track[Id 0x%x] using Sync Sample Box (stss)",
2049                  p_track->i_track_ID );
2050         for( unsigned i_index = 0; i_index < p_stss->i_entry_count; i_index++ )
2051         {
2052             if( i_index >= p_stss->i_entry_count - 1 ||
2053                 i_sample < p_stss->i_sample_number[i_index+1] )
2054             {
2055                 unsigned i_sync_sample = p_stss->i_sample_number[i_index];
2056                 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
2057                          i_sample, i_sync_sample );
2058
2059                 if( i_sync_sample <= i_sample )
2060                 {
2061                     while( i_chunk > 0 &&
2062                            i_sync_sample < p_track->chunk[i_chunk].i_sample_first )
2063                         i_chunk--;
2064                 }
2065                 else
2066                 {
2067                     while( i_chunk < p_track->i_chunk_count - 1 &&
2068                            i_sync_sample >= p_track->chunk[i_chunk].i_sample_first +
2069                                             p_track->chunk[i_chunk].i_sample_count )
2070                         i_chunk++;
2071                 }
2072                 i_sample = i_sync_sample;
2073                 break;
2074             }
2075         }
2076     }
2077     else
2078     {
2079         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
2080                  "Sample Box (stss)", p_track->i_track_ID );
2081     }
2082
2083     *pi_chunk  = i_chunk;
2084     *pi_sample = i_sample;
2085
2086     return VLC_SUCCESS;
2087 }
2088
2089 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
2090                                  unsigned int i_chunk, unsigned int i_sample )
2091 {
2092     bool b_reselect = false;
2093
2094     /* now see if actual es is ok */
2095     if( p_track->i_chunk >= p_track->i_chunk_count ||
2096         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
2097             p_track->chunk[i_chunk].i_sample_description_index )
2098     {
2099         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
2100                   p_track->i_track_ID );
2101
2102         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
2103                         p_track->p_es, &b_reselect );
2104
2105         es_out_Del( p_demux->out, p_track->p_es );
2106
2107         p_track->p_es = NULL;
2108
2109         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
2110         {
2111             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2112                      p_track->i_track_ID );
2113
2114             p_track->b_ok       = false;
2115             p_track->b_selected = false;
2116             return VLC_EGENERIC;
2117         }
2118     }
2119
2120     /* select again the new decoder */
2121     if( b_reselect )
2122     {
2123         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
2124     }
2125
2126     p_track->i_chunk    = i_chunk;
2127     p_track->i_sample   = i_sample;
2128
2129     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2130 }
2131
2132 /****************************************************************************
2133  * MP4_TrackCreate:
2134  ****************************************************************************
2135  * Parse track information and create all needed data to run a track
2136  * If it succeed b_ok is set to 1 else to 0
2137  ****************************************************************************/
2138 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
2139                              MP4_Box_t *p_box_trak,
2140                              bool b_force_enable )
2141 {
2142     demux_sys_t *p_sys = p_demux->p_sys;
2143
2144     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
2145     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
2146     MP4_Box_t *p_elst;
2147
2148     MP4_Box_t *p_mdhd;
2149     MP4_Box_t *p_udta;
2150     MP4_Box_t *p_hdlr;
2151
2152     MP4_Box_t *p_vmhd;
2153     MP4_Box_t *p_smhd;
2154
2155     MP4_Box_t *p_drms;
2156
2157     unsigned int i;
2158     char language[4];
2159
2160     /* hint track unsupported */
2161
2162     /* set default value (-> track unusable) */
2163     p_track->b_ok       = false;
2164     p_track->b_enable   = false;
2165     p_track->b_selected = false;
2166     p_track->b_chapter  = false;
2167     p_track->b_mac_encoding = false;
2168
2169     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
2170
2171     if( !p_tkhd )
2172     {
2173         return;
2174     }
2175
2176     /* do we launch this track by default ? */
2177     p_track->b_enable =
2178         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
2179     if( !p_track->b_enable )
2180         p_track->fmt.i_priority = -1;
2181
2182     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
2183     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
2184     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
2185
2186     if( p_tref )
2187     {
2188 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
2189     }
2190
2191     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
2192     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
2193
2194     if( ( !p_mdhd )||( !p_hdlr ) )
2195     {
2196         return;
2197     }
2198
2199     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
2200     if( !p_track->i_timescale )
2201         return;
2202
2203     if( p_mdhd->data.p_mdhd->i_language_code < 0x800 )
2204     {
2205         /* We can convert i_language_code into iso 639 code,
2206          * I won't */
2207         strcpy( language, MP4_ConvertMacCode( p_mdhd->data.p_mdhd->i_language_code ) );
2208         p_track->b_mac_encoding = true;
2209     }
2210     else
2211     {
2212         for( i = 0; i < 3; i++ )
2213             language[i] = p_mdhd->data.p_mdhd->i_language[i];
2214         language[3] = '\0';
2215     }
2216
2217     switch( p_hdlr->data.p_hdlr->i_handler_type )
2218     {
2219         case( FOURCC_soun ):
2220             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2221             {
2222                 return;
2223             }
2224             p_track->fmt.i_cat = AUDIO_ES;
2225             break;
2226
2227         case( FOURCC_vide ):
2228             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2229             {
2230                 return;
2231             }
2232             p_track->fmt.i_cat = VIDEO_ES;
2233             break;
2234
2235         case( FOURCC_text ):
2236         case( FOURCC_subp ):
2237         case( FOURCC_tx3g ):
2238         case( FOURCC_sbtl ):
2239             p_track->fmt.i_cat = SPU_ES;
2240             break;
2241
2242         default:
2243             return;
2244     }
2245
2246     p_track->i_elst = 0;
2247     p_track->i_elst_time = 0;
2248     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2249     {
2250         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
2251         unsigned int i;
2252
2253         msg_Warn( p_demux, "elst box found" );
2254         for( i = 0; i < elst->i_entry_count; i++ )
2255         {
2256             msg_Dbg( p_demux, "   - [%d] duration=%"PRId64"ms media time=%"PRId64
2257                      "ms) rate=%d.%d", i,
2258                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2259                      elst->i_media_time[i] >= 0 ?
2260                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2261                      INT64_C(-1),
2262                      elst->i_media_rate_integer[i],
2263                      elst->i_media_rate_fraction[i] );
2264         }
2265     }
2266
2267
2268 /*  TODO
2269     add support for:
2270     p_dinf = MP4_BoxGet( p_minf, "dinf" );
2271 */
2272     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2273         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2274     {
2275         return;
2276     }
2277
2278     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
2279     p_track->b_drms = p_drms != NULL;
2280     p_track->p_drms = p_track->b_drms ?
2281         p_drms->data.p_sample_soun->p_drms : NULL;
2282
2283     if ( !p_drms )
2284     {
2285         p_drms = MP4_BoxGet( p_track->p_stsd, "drmi" );
2286         p_track->b_drms = p_drms != NULL;
2287         p_track->p_drms = p_track->b_drms ?
2288             p_drms->data.p_sample_vide->p_drms : NULL;
2289     }
2290
2291     if( p_drms )
2292         p_track->p_skcr = MP4_BoxGet( p_drms, "sinf/skcr" );
2293
2294     /* Set language */
2295     if( *language && strcmp( language, "```" ) && strcmp( language, "und" ) )
2296     {
2297         p_track->fmt.psz_language = strdup( language );
2298     }
2299
2300     p_udta = MP4_BoxGet( p_box_trak, "udta" );
2301     if( p_udta )
2302     {
2303         MP4_Box_t *p_0xa9xxx;
2304         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
2305                  p_0xa9xxx = p_0xa9xxx->p_next )
2306         {
2307             switch( p_0xa9xxx->i_type )
2308             {
2309                 case FOURCC_0xa9nam:
2310                     p_track->fmt.psz_description =
2311                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
2312                     break;
2313             }
2314         }
2315     }
2316
2317     /* Create chunk index table and sample index table */
2318     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
2319         TrackCreateSamplesIndex( p_demux, p_track ) )
2320     {
2321         return; /* cannot create chunks index */
2322     }
2323
2324     p_track->i_chunk  = 0;
2325     p_track->i_sample = 0;
2326
2327     /* Mark chapter only track */
2328     if( p_sys->p_tref_chap )
2329     {
2330         MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2331         unsigned int i;
2332
2333         for( i = 0; i < p_chap->i_entry_count; i++ )
2334         {
2335             if( p_track->i_track_ID == p_chap->i_track_ID[i] )
2336             {
2337                 p_track->b_chapter = true;
2338                 p_track->b_enable = false;
2339                 break;
2340             }
2341         }
2342     }
2343
2344     /* now create es */
2345     if( b_force_enable &&
2346         ( p_track->fmt.i_cat == VIDEO_ES || p_track->fmt.i_cat == AUDIO_ES ) )
2347     {
2348         msg_Warn( p_demux, "Enabling track[Id 0x%x] (buggy file without enabled track)",
2349                   p_track->i_track_ID );
2350         p_track->b_enable = true;
2351         p_track->fmt.i_priority = 0;
2352     }
2353
2354     p_track->p_es = NULL;
2355     if( TrackCreateES( p_demux,
2356                        p_track, p_track->i_chunk,
2357                        p_track->b_chapter ? NULL : &p_track->p_es ) )
2358     {
2359         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2360                  p_track->i_track_ID );
2361         return;
2362     }
2363     p_track->b_ok = true;
2364 #if 0
2365     {
2366         int i;
2367         for( i = 0; i < p_track->i_chunk_count; i++ )
2368         {
2369             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2370                      i, p_track->chunk[i].i_sample_count,
2371                      p_track->chunk[i].i_first_dts );
2372
2373         }
2374     }
2375 #endif
2376 }
2377
2378 /****************************************************************************
2379  * MP4_TrackDestroy:
2380  ****************************************************************************
2381  * Destroy a track created by MP4_TrackCreate.
2382  ****************************************************************************/
2383 static void MP4_TrackDestroy( mp4_track_t *p_track )
2384 {
2385     unsigned int i_chunk;
2386
2387     p_track->b_ok = false;
2388     p_track->b_enable   = false;
2389     p_track->b_selected = false;
2390
2391     es_format_Clean( &p_track->fmt );
2392
2393     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2394     {
2395         if( p_track->chunk )
2396         {
2397            FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2398            FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2399
2400            FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2401            FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2402         }
2403     }
2404     FREENULL( p_track->chunk );
2405
2406     if( !p_track->i_sample_size )
2407     {
2408         FREENULL( p_track->p_sample_size );
2409     }
2410 }
2411
2412 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2413                             mtime_t i_start )
2414 {
2415     if( !p_track->b_ok || p_track->b_chapter )
2416     {
2417         return VLC_EGENERIC;
2418     }
2419
2420     if( p_track->b_selected )
2421     {
2422         msg_Warn( p_demux, "track[Id 0x%x] already selected",
2423                   p_track->i_track_ID );
2424         return VLC_SUCCESS;
2425     }
2426
2427     return MP4_TrackSeek( p_demux, p_track, i_start );
2428 }
2429
2430 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2431 {
2432     if( !p_track->b_ok || p_track->b_chapter )
2433     {
2434         return;
2435     }
2436
2437     if( !p_track->b_selected )
2438     {
2439         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2440                   p_track->i_track_ID );
2441         return;
2442     }
2443     if( p_track->p_es )
2444     {
2445         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2446                         p_track->p_es, false );
2447     }
2448
2449     p_track->b_selected = false;
2450 }
2451
2452 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2453                           mtime_t i_start )
2454 {
2455     uint32_t i_chunk;
2456     uint32_t i_sample;
2457
2458     if( !p_track->b_ok || p_track->b_chapter )
2459         return VLC_EGENERIC;
2460
2461     p_track->b_selected = false;
2462
2463     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2464                                 &i_chunk, &i_sample ) )
2465     {
2466         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2467                   p_track->i_track_ID );
2468         return VLC_EGENERIC;
2469     }
2470
2471     p_track->b_selected = true;
2472
2473     if( !TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) )
2474         p_track->b_selected = true;
2475
2476     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2477 }
2478
2479
2480 /*
2481  * 3 types: for audio
2482  *
2483  */
2484 #define QT_V0_MAX_SAMPLES 1024
2485 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2486 {
2487     int i_size;
2488     MP4_Box_data_sample_soun_t *p_soun;
2489
2490     if( p_track->i_sample_size == 0 )
2491     {
2492         /* most simple case */
2493         return p_track->p_sample_size[p_track->i_sample];
2494     }
2495     if( p_track->fmt.i_cat != AUDIO_ES )
2496     {
2497         return p_track->i_sample_size;
2498     }
2499
2500     p_soun = p_track->p_sample->data.p_sample_soun;
2501
2502     if( p_soun->i_qt_version == 1 )
2503     {
2504         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count;
2505         if( p_track->fmt.audio.i_blockalign > 1 )
2506             i_samples = p_soun->i_sample_per_packet;
2507
2508         i_size = i_samples / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2509     }
2510     else if( p_track->i_sample_size > 256 )
2511     {
2512         /* We do that so we don't read too much data
2513          * (in this case we are likely dealing with compressed data) */
2514         i_size = p_track->i_sample_size;
2515     }
2516     else
2517     {
2518         /* Read a bunch of samples at once */
2519         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2520             ( p_track->i_sample -
2521               p_track->chunk[p_track->i_chunk].i_sample_first );
2522
2523         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2524         i_size = i_samples * p_track->i_sample_size;
2525     }
2526
2527     //fprintf( stderr, "size=%d\n", i_size );
2528     return i_size;
2529 }
2530
2531 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2532 {
2533     unsigned int i_sample;
2534     uint64_t i_pos;
2535
2536     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2537
2538     if( p_track->i_sample_size )
2539     {
2540         MP4_Box_data_sample_soun_t *p_soun =
2541             p_track->p_sample->data.p_sample_soun;
2542
2543         if( p_soun->i_qt_version == 0 )
2544         {
2545             i_pos += ( p_track->i_sample -
2546                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
2547                      p_track->i_sample_size;
2548         }
2549         else
2550         {
2551             /* we read chunk by chunk unless a blockalign is requested */
2552             if( p_track->fmt.audio.i_blockalign > 1 )
2553                 i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) /
2554                                 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2555         }
2556     }
2557     else
2558     {
2559         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2560              i_sample < p_track->i_sample; i_sample++ )
2561         {
2562             i_pos += p_track->p_sample_size[i_sample];
2563         }
2564     }
2565
2566     return i_pos;
2567 }
2568
2569 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2570 {
2571     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2572     {
2573         MP4_Box_data_sample_soun_t *p_soun;
2574
2575         p_soun = p_track->p_sample->data.p_sample_soun;
2576
2577         if( p_soun->i_qt_version == 1 )
2578         {
2579             /* we read chunk by chunk unless a blockalign is requested */
2580             if( p_track->fmt.audio.i_blockalign > 1 )
2581                 p_track->i_sample += p_soun->i_sample_per_packet;
2582             else
2583                 p_track->i_sample += p_track->chunk[p_track->i_chunk].i_sample_count;
2584         }
2585         else if( p_track->i_sample_size > 256 )
2586         {
2587             /* We do that so we don't read too much data
2588              * (in this case we are likely dealing with compressed data) */
2589             p_track->i_sample += 1;
2590         }
2591         else
2592         {
2593             /* FIXME */
2594             p_track->i_sample += QT_V0_MAX_SAMPLES;
2595             if( p_track->i_sample >
2596                 p_track->chunk[p_track->i_chunk].i_sample_first +
2597                 p_track->chunk[p_track->i_chunk].i_sample_count )
2598             {
2599                 p_track->i_sample =
2600                     p_track->chunk[p_track->i_chunk].i_sample_first +
2601                     p_track->chunk[p_track->i_chunk].i_sample_count;
2602             }
2603         }
2604     }
2605     else
2606     {
2607         p_track->i_sample++;
2608     }
2609
2610     if( p_track->i_sample >= p_track->i_sample_count )
2611         return VLC_EGENERIC;
2612
2613     /* Have we changed chunk ? */
2614     if( p_track->i_sample >=
2615             p_track->chunk[p_track->i_chunk].i_sample_first +
2616             p_track->chunk[p_track->i_chunk].i_sample_count )
2617     {
2618         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2619                                   p_track->i_sample ) )
2620         {
2621             msg_Warn( p_demux, "track[0x%x] will be disabled "
2622                       "(cannot restart decoder)", p_track->i_track_ID );
2623             MP4_TrackUnselect( p_demux, p_track );
2624             return VLC_EGENERIC;
2625         }
2626     }
2627
2628     /* Have we changed elst */
2629     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2630     {
2631         demux_sys_t *p_sys = p_demux->p_sys;
2632         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2633         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2634                         p_sys->i_timescale / (int64_t)1000000;
2635
2636         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2637             i_mvt >= p_track->i_elst_time +
2638                      elst->i_segment_duration[p_track->i_elst] )
2639         {
2640             MP4_TrackSetELST( p_demux, p_track,
2641                               MP4_TrackGetDTS( p_demux, p_track ) );
2642         }
2643     }
2644
2645     return VLC_SUCCESS;
2646 }
2647
2648 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2649                               int64_t i_time )
2650 {
2651     demux_sys_t *p_sys = p_demux->p_sys;
2652     int         i_elst_last = tk->i_elst;
2653
2654     /* handle elst (find the correct one) */
2655     tk->i_elst      = 0;
2656     tk->i_elst_time = 0;
2657     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2658     {
2659         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2660         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2661
2662         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2663         {
2664             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2665
2666             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2667             {
2668                 break;
2669             }
2670             tk->i_elst_time += i_dur;
2671         }
2672
2673         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2674         {
2675             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2676             tk->i_elst = elst->i_entry_count - 1;
2677             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2678         }
2679
2680         if( elst->i_media_time[tk->i_elst] < 0 )
2681         {
2682             /* track offset */
2683             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2684         }
2685     }
2686     if( i_elst_last != tk->i_elst )
2687     {
2688         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2689     }
2690 }
2691
2692 /* */
2693 static const char *MP4_ConvertMacCode( uint16_t i_code )
2694 {
2695     static const struct { const char *psz_iso639_1; uint16_t i_code; } p_cvt[] = {
2696         { "en",   0 }, { "fr",   1 }, { "de",   2 }, { "it",   3 }, { "nl",   4 },
2697         { "sv",   5 }, { "es",   6 }, { "da",   7 }, { "pt",   8 }, { "no",   9 },
2698         { "he",  10 }, { "ja",  11 }, { "ar",  12 }, { "fi",  13 }, { "el",  14 },
2699         { "is",  15 }, { "mt",  16 }, { "tr",  17 }, { "hr",  18 }, { "zh",  19 },
2700         { "ur",  20 }, { "hi",  21 }, { "th",  22 }, { "ko",  23 }, { "lt",  24 },
2701         { "pl",  25 }, { "hu",  26 }, { "et",  27 }, { "lv",  28 }, //{ "??",  29 },
2702         { "fo",  30 }, { "fa",  31 }, { "ru",  32 }, { "zh",  33 }, { "nl",  34 },
2703         { "ga",  35 }, { "sq",  36 }, { "ro",  37 }, { "cs",  38 }, { "sk",  39 },
2704         { "sl",  40 }, { "yi",  41 }, { "sr",  42 }, { "mk",  43 }, { "bg",  44 },
2705         { "uk",  45 }, { "be",  46 }, { "uz",  47 }, { "az",  48 }, { "kk",  48 },
2706         { "az",  50 }, { "hy",  51 }, { "ka",  52 }, { "mo",  53 }, { "ky",  54 },
2707         { "tg",  55 }, { "tk",  56 }, { "mn",  57 }, { "mn",  58 }, { "ps",  59 },
2708         { "ku",  60 }, { "ks",  61 }, { "sd",  62 }, { "bo",  63 }, { "ne",  64 },
2709         { "sa",  65 }, { "mr",  66 }, { "bn",  67 }, { "as",  68 }, { "gu",  69 },
2710         { "pa",  70 }, { "or",  71 }, { "ml",  72 }, { "kn",  73 }, { "ta",  74 },
2711         { "te",  75 }, { "si",  76 }, { "my",  77 }, { "km",  78 }, { "lo",  79 },
2712         { "vi",  80 }, { "id",  81 }, { "tl",  82 }, { "ms",  83 }, { "ms",  84 },
2713         { "am",  85 }, { "ti",  86 }, { "om",  87 }, { "so",  88 }, { "sw",  89 },
2714         { "rw",  90 }, { "rn",  91 }, { "ny",  92 }, { "mg",  93 }, { "eo",  94 },
2715
2716                                                      { "cy", 128 }, { "eu", 129 },
2717         { "ca", 130 }, { "la", 131 }, { "qu", 132 }, { "gn", 133 }, { "ay", 134 },
2718         { "tt", 135 }, { "ug", 136 }, { "dz", 137 }, { "jv", 138 }, { "su", 139 },
2719         { "gl", 140 }, { "af", 141 }, { "br", 142 }, { "iu", 143 }, { "gd", 144 },
2720         { "gv", 145 }, { "ga", 146 }, { "to", 147 }, { "el", 148 },
2721         /* */
2722         { NULL, 0 }
2723     };
2724     int i;
2725     for( i = 0; p_cvt[i].psz_iso639_1 != NULL; i++ )
2726     {
2727         if( p_cvt[i].i_code == i_code )
2728             return p_cvt[i].psz_iso639_1;
2729     }
2730     return "";
2731 }