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, 2010 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 "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_FASTSEEK, &b_seekable );
 306     if( !b_seekable )
 307     {
 308         msg_Warn( p_demux, "MP4 plugin discarded (not fastseekable)" );
 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_location );
 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 useful 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 - 1] );
 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_0xa9too: /* Encoder Tool */
 936                 case FOURCC_0xa9enc: /* Encoded By */
 937                     SET( vlc_meta_SetEncodedBy );
 938                     break;
 939
 940                 default:
 941                     break;
 942                 }
 943 #undef SET
 944                 static const struct { uint32_t xa9_type; char metadata[25]; } xa9typetoextrameta[] =
 945                 {
 946                     { FOURCC_0xa9wrt, N_("Writer") },
 947                     { FOURCC_0xa9com, N_("Composr") },
 948                     { FOURCC_0xa9prd, N_("Producer") },
 949                     { FOURCC_0xa9inf, N_("Information") },
 950                     { FOURCC_0xa9dir, N_("Director") },
 951                     { FOURCC_0xa9dis, N_("Disclaimer") },
 952                     { FOURCC_0xa9req, N_("Requirements") },
 953                     { FOURCC_0xa9fmt, N_("Original Format") },
 954                     { FOURCC_0xa9dsa, N_("Display Source As") },
 955                     { FOURCC_0xa9hst, N_("Host Computer") },
 956                     { FOURCC_0xa9prf, N_("Performers") },
 957                     { FOURCC_0xa9ope, N_("Original Performer") },
 958                     { FOURCC_0xa9src, N_("Providers Source Content") },
 959                     { FOURCC_0xa9wrn, N_("Warning") },
 960                     { FOURCC_0xa9swr, N_("Software") },
 961                     { FOURCC_0xa9lyr, N_("Lyrics") },
 962                     { FOURCC_0xa9mak, N_("Make") },
 963                     { FOURCC_0xa9mod, N_("Model") },
 964                     { FOURCC_0xa9PRD, N_("Product") },
 965                     { FOURCC_0xa9grp, N_("Grouping") },
 966                     { 0, "" },
 967                 };
 968                 for( unsigned i = 0; xa9typetoextrameta[i].xa9_type; i++ )
 969                 {
 970                     if( p_0xa9xxx->i_type == xa9typetoextrameta[i].xa9_type )
 971                     {
 972                         char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" );
 973                         if( psz_utf )
 974                         {
 975                              EnsureUTF8( psz_utf );
 976                              vlc_meta_AddExtra( p_meta, _(xa9typetoextrameta[i].metadata), psz_utf );
 977                              free( psz_utf );
 978                         }
 979                         break;
 980                     }
 981                 }
 982             }
 983             return VLC_SUCCESS;
 984         }
 985
 986         case DEMUX_GET_TITLE_INFO:
 987         {
 988             input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
 989             int *pi_int    = (int*)va_arg( args, int* );
 990             int *pi_title_offset = (int*)va_arg( args, int* );
 991             int *pi_seekpoint_offset = (int*)va_arg( args, int* );
 992
 993             if( !p_sys->p_title )
 994                 return VLC_EGENERIC;
 995
 996             *pi_int = 1;
 997             *ppp_title = malloc( sizeof( input_title_t**) );
 998             (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
 999             *pi_title_offset = 0;
1000             *pi_seekpoint_offset = 0;
1001             return VLC_SUCCESS;
1002         }
1003         case DEMUX_SET_TITLE:
1004         {
1005             const int i_title = (int)va_arg( args, int );
1006             if( !p_sys->p_title || i_title != 0 )
1007                 return VLC_EGENERIC;
1008             return VLC_SUCCESS;
1009         }
1010         case DEMUX_SET_SEEKPOINT:
1011         {
1012             const int i_seekpoint = (int)va_arg( args, int );
1013             if( !p_sys->p_title )
1014                 return VLC_EGENERIC;
1015             return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
1016         }
1017
1018         case DEMUX_SET_NEXT_DEMUX_TIME:
1019         case DEMUX_SET_GROUP:
1020         case DEMUX_HAS_UNSUPPORTED_META:
1021         case DEMUX_GET_ATTACHMENTS:
1022             return VLC_EGENERIC;
1023
1024         default:
1025             msg_Warn( p_demux, "control query %u unimplemented", i_query );
1026             return VLC_EGENERIC;
1027     }
1028 }
1029
1030 /*****************************************************************************
1031  * Close: frees unused data
1032  *****************************************************************************/
1033 static void Close ( vlc_object_t * p_this )
1034 {
1035     demux_t *  p_demux = (demux_t *)p_this;
1036     demux_sys_t *p_sys = p_demux->p_sys;
1037     unsigned int i_track;
1038
1039     msg_Dbg( p_demux, "freeing all memory" );
1040
1041     MP4_BoxFree( p_demux->s, p_sys->p_root );
1042     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1043     {
1044         MP4_TrackDestroy(  &p_sys->track[i_track] );
1045     }
1046     FREENULL( p_sys->track );
1047
1048     if( p_sys->p_title )
1049         vlc_input_title_Delete( p_sys->p_title );
1050
1051     free( p_sys );
1052 }
1053
1054
1055
1056 /****************************************************************************
1057  * Local functions, specific to vlc
1058  ****************************************************************************/
1059 /* Chapters */
1060 static void LoadChapterGpac( demux_t  *p_demux, MP4_Box_t *p_chpl )
1061 {
1062     demux_sys_t *p_sys = p_demux->p_sys;
1063     int i;
1064
1065     p_sys->p_title = vlc_input_title_New();
1066     for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
1067     {
1068         seekpoint_t *s = vlc_seekpoint_New();
1069
1070         s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
1071         EnsureUTF8( s->psz_name );
1072         s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
1073         TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1074     }
1075 }
1076 static void LoadChapterApple( demux_t  *p_demux, mp4_track_t *tk )
1077 {
1078     demux_sys_t *p_sys = p_demux->p_sys;
1079
1080     for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1081     {
1082         const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1083         const int64_t i_pts_delta = MP4_TrackGetPTSDelta( tk );
1084         const unsigned int i_size = MP4_TrackSampleSize( tk );
1085
1086         if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1087         {
1088             char p_buffer[256];
1089             const int i_read = stream_Read( p_demux->s, p_buffer, __MIN( sizeof(p_buffer), i_size ) );
1090             const int i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1091
1092             if( i_len > 0 )
1093             {
1094                 seekpoint_t *s = vlc_seekpoint_New();
1095
1096                 s->psz_name = strndup( &p_buffer[2], i_len );
1097                 EnsureUTF8( s->psz_name );
1098
1099                 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1100
1101                 if( !p_sys->p_title )
1102                     p_sys->p_title = vlc_input_title_New();
1103                 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1104             }
1105         }
1106         if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1107                               tk->chunk[tk->i_chunk].i_sample_count )
1108             tk->i_chunk++;
1109     }
1110 }
1111 static void LoadChapter( demux_t  *p_demux )
1112 {
1113     demux_sys_t *p_sys = p_demux->p_sys;
1114     MP4_Box_t *p_chpl;
1115
1116     if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
1117     {
1118         LoadChapterGpac( p_demux, p_chpl );
1119     }
1120     else if( p_sys->p_tref_chap )
1121     {
1122         MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1123         unsigned int i, j;
1124
1125         /* Load the first subtitle track like quicktime */
1126         for( i = 0; i < p_chap->i_entry_count; i++ )
1127         {
1128             for( j = 0; j < p_sys->i_tracks; j++ )
1129             {
1130                 mp4_track_t *tk = &p_sys->track[j];
1131                 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1132                     tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
1133                     break;
1134             }
1135             if( j < p_sys->i_tracks )
1136             {
1137                 LoadChapterApple( p_demux, &p_sys->track[j] );
1138                 break;
1139             }
1140         }
1141     }
1142 }
1143
1144 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1145 static int TrackCreateChunksIndex( demux_t *p_demux,
1146                                    mp4_track_t *p_demux_track )
1147 {
1148     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1149     MP4_Box_t *p_stsc;
1150
1151     unsigned int i_chunk;
1152     unsigned int i_index, i_last;
1153
1154     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1155           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1156         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1157     {
1158         return( VLC_EGENERIC );
1159     }
1160
1161     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
1162     if( !p_demux_track->i_chunk_count )
1163     {
1164         msg_Warn( p_demux, "no chunk defined" );
1165         return( VLC_EGENERIC );
1166     }
1167     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1168                                    sizeof( mp4_chunk_t ) );
1169     if( p_demux_track->chunk == NULL )
1170     {
1171         return VLC_ENOMEM;
1172     }
1173
1174     /* first we read chunk offset */
1175     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1176     {
1177         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1178
1179         ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
1180
1181         ck->i_first_dts = 0;
1182         ck->p_sample_count_dts = NULL;
1183         ck->p_sample_delta_dts = NULL;
1184         ck->p_sample_count_pts = NULL;
1185         ck->p_sample_offset_pts = NULL;
1186     }
1187
1188     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1189         to be used for the sample XXX begin to 1
1190         We construct it begining at the end */
1191     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1192     i_index = p_stsc->data.p_stsc->i_entry_count;
1193     if( !i_index )
1194     {
1195         msg_Warn( p_demux, "cannot read chunk table or table empty" );
1196         return( VLC_EGENERIC );
1197     }
1198
1199     while( i_index-- )
1200     {
1201         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1202              i_chunk < i_last; i_chunk++ )
1203         {
1204             if( i_chunk >= p_demux_track->i_chunk_count )
1205             {
1206                 msg_Warn( p_demux, "corrupted chunk table" );
1207                 return VLC_EGENERIC;
1208             }
1209
1210             p_demux_track->chunk[i_chunk].i_sample_description_index =
1211                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
1212             p_demux_track->chunk[i_chunk].i_sample_count =
1213                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
1214         }
1215         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1216     }
1217
1218     p_demux_track->chunk[0].i_sample_first = 0;
1219     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1220     {
1221         p_demux_track->chunk[i_chunk].i_sample_first =
1222             p_demux_track->chunk[i_chunk-1].i_sample_first +
1223                 p_demux_track->chunk[i_chunk-1].i_sample_count;
1224     }
1225
1226     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1227              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1228
1229     return VLC_SUCCESS;
1230 }
1231
1232 static int TrackCreateSamplesIndex( demux_t *p_demux,
1233                                     mp4_track_t *p_demux_track )
1234 {
1235     MP4_Box_t *p_box;
1236     MP4_Box_data_stsz_t *stsz;
1237     MP4_Box_data_stts_t *stts;
1238     /* TODO use also stss and stsh table for seeking */
1239     /* FIXME use edit table */
1240     int64_t i_sample;
1241     int64_t i_chunk;
1242
1243     int64_t i_index;
1244     int64_t i_index_sample_used;
1245
1246     int64_t i_next_dts;
1247
1248     /* Find stsz
1249      *  Gives the sample size for each samples. There is also a stz2 table
1250      *  (compressed form) that we need to implement TODO */
1251     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1252     if( !p_box )
1253     {
1254         /* FIXME and stz2 */
1255         msg_Warn( p_demux, "cannot find STSZ box" );
1256         return VLC_EGENERIC;
1257     }
1258     stsz = p_box->data.p_stsz;
1259
1260     /* Find stts
1261      *  Gives mapping between sample and decoding time
1262      */
1263     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1264     if( !p_box )
1265     {
1266         msg_Warn( p_demux, "cannot find STTS box" );
1267         return VLC_EGENERIC;
1268     }
1269     stts = p_box->data.p_stts;
1270
1271     /* Use stsz table to create a sample number -> sample size table */
1272     p_demux_track->i_sample_count = stsz->i_sample_count;
1273     if( stsz->i_sample_size )
1274     {
1275         /* 1: all sample have the same size, so no need to construct a table */
1276         p_demux_track->i_sample_size = stsz->i_sample_size;
1277         p_demux_track->p_sample_size = NULL;
1278     }
1279     else
1280     {
1281         /* 2: each sample can have a different size */
1282         p_demux_track->i_sample_size = 0;
1283         p_demux_track->p_sample_size =
1284             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1285         if( p_demux_track->p_sample_size == NULL )
1286             return VLC_ENOMEM;
1287
1288         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1289         {
1290             p_demux_track->p_sample_size[i_sample] =
1291                     stsz->i_entry_size[i_sample];
1292         }
1293     }
1294
1295     /* Use stts table to create a sample number -> dts table.
1296      * XXX: if we don't want to waste too much memory, we can't expand
1297      *  the box! so each chunk will contain an "extract" of this table
1298      *  for fast research (problem with raw stream where a sample is sometime
1299      *  just channels*bits_per_sample/8 */
1300
1301     i_next_dts = 0;
1302     i_index = 0; i_index_sample_used = 0;
1303     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1304     {
1305         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1306         int64_t i_entry, i_sample_count, i;
1307
1308         /* save first dts */
1309         ck->i_first_dts = i_next_dts;
1310         ck->i_last_dts  = i_next_dts;
1311
1312         /* count how many entries are needed for this chunk
1313          * for p_sample_delta_dts and p_sample_count_dts */
1314         i_sample_count = ck->i_sample_count;
1315
1316         i_entry = 0;
1317         while( i_sample_count > 0 )
1318         {
1319             i_sample_count -= stts->i_sample_count[i_index+i_entry];
1320             /* don't count already used sample in this entry */
1321             if( i_entry == 0 )
1322                 i_sample_count += i_index_sample_used;
1323
1324             i_entry++;
1325         }
1326
1327         /* allocate them */
1328         ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1329         ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1330
1331         if( !ck->p_sample_count_dts || !ck->p_sample_delta_dts )
1332             return VLC_ENOMEM;
1333
1334         /* now copy */
1335         i_sample_count = ck->i_sample_count;
1336         for( i = 0; i < i_entry; i++ )
1337         {
1338             int64_t i_used;
1339             int64_t i_rest;
1340
1341             i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1342
1343             i_used = __MIN( i_rest, i_sample_count );
1344
1345             i_index_sample_used += i_used;
1346             i_sample_count -= i_used;
1347             i_next_dts += i_used * stts->i_sample_delta[i_index];
1348
1349             ck->p_sample_count_dts[i] = i_used;
1350             ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1351             if( i_used > 0 )
1352                 ck->i_last_dts = i_next_dts - ck->p_sample_delta_dts[i];
1353
1354             if( i_index_sample_used >= stts->i_sample_count[i_index] )
1355             {
1356                 i_index++;
1357                 i_index_sample_used = 0;
1358             }
1359         }
1360     }
1361
1362     /* Find ctts
1363      *  Gives the delta between decoding time (dts) and composition table (pts)
1364      */
1365     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1366     if( p_box )
1367     {
1368         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1369
1370         msg_Warn( p_demux, "CTTS table" );
1371
1372         /* Create pts-dts table per chunk */
1373         i_index = 0; i_index_sample_used = 0;
1374         for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1375         {
1376             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1377             int64_t i_entry, i_sample_count, i;
1378
1379             /* count how many entries are needed for this chunk
1380              * for p_sample_delta_dts and p_sample_count_dts */
1381             i_sample_count = ck->i_sample_count;
1382
1383             i_entry = 0;
1384             while( i_sample_count > 0 )
1385             {
1386                 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1387
1388                 /* don't count already used sample in this entry */
1389                 if( i_entry == 0 )
1390                     i_sample_count += i_index_sample_used;
1391
1392                 i_entry++;
1393             }
1394
1395             /* allocate them */
1396             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1397             ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1398             if( !ck->p_sample_count_pts || !ck->p_sample_offset_pts )
1399                 return VLC_ENOMEM;
1400
1401             /* now copy */
1402             i_sample_count = ck->i_sample_count;
1403             for( i = 0; i < i_entry; i++ )
1404             {
1405                 int64_t i_used;
1406                 int64_t i_rest;
1407
1408                 i_rest = ctts->i_sample_count[i_index] -
1409                     i_index_sample_used;
1410
1411                 i_used = __MIN( i_rest, i_sample_count );
1412
1413                 i_index_sample_used += i_used;
1414                 i_sample_count -= i_used;
1415
1416                 ck->p_sample_count_pts[i] = i_used;
1417                 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1418
1419                 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1420                 {
1421                     i_index++;
1422                     i_index_sample_used = 0;
1423                 }
1424             }
1425         }
1426     }
1427
1428     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:%"PRId64"s",
1429              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1430              i_next_dts / p_demux_track->i_timescale );
1431
1432     return VLC_SUCCESS;
1433 }
1434
1435 /**
1436  * It computes the sample rate for a video track using the given sample
1437  * description index
1438  */
1439 static void TrackGetESSampleRate( unsigned *pi_num, unsigned *pi_den,
1440                                   const mp4_track_t *p_track,
1441                                   unsigned i_sd_index,
1442                                   unsigned i_chunk )
1443 {
1444     *pi_num = 0;
1445     *pi_den = 0;
1446
1447     if( p_track->i_chunk_count <= 0 )
1448         return;
1449
1450     /* */
1451     const mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
1452     while( p_chunk > &p_track->chunk[0] &&
1453            p_chunk[-1].i_sample_description_index == i_sd_index )
1454     {
1455         p_chunk--;
1456     }
1457
1458     uint64_t i_sample = 0;
1459     uint64_t i_first_dts = p_chunk->i_first_dts;
1460     uint64_t i_last_dts;
1461     do
1462     {
1463         i_sample += p_chunk->i_sample_count;
1464         i_last_dts = p_chunk->i_last_dts;
1465         p_chunk++;
1466     }
1467     while( p_chunk < &p_track->chunk[p_track->i_chunk_count] &&
1468            p_chunk->i_sample_description_index == i_sd_index );
1469
1470     if( i_sample > 1 && i_first_dts < i_last_dts )
1471         vlc_ureduce( pi_num, pi_den,
1472                      ( i_sample - 1) *  p_track->i_timescale,
1473                      i_last_dts - i_first_dts,
1474                      UINT16_MAX);
1475 }
1476
1477 /*
1478  * TrackCreateES:
1479  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1480  */
1481 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1482                           unsigned int i_chunk, es_out_id_t **pp_es )
1483 {
1484     const unsigned i_sample_description_index =
1485         p_track->chunk[i_chunk].i_sample_description_index;
1486     MP4_Box_t   *p_sample;
1487     MP4_Box_t   *p_esds;
1488     MP4_Box_t   *p_frma;
1489     MP4_Box_t   *p_enda;
1490
1491     if( pp_es )
1492         *pp_es = NULL;
1493
1494     if( !i_sample_description_index )
1495     {
1496         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1497                   p_track->i_track_ID );
1498         return VLC_EGENERIC;
1499     }
1500
1501     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1502                             i_sample_description_index - 1 );
1503
1504     if( !p_sample ||
1505         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1506     {
1507         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1508                   p_track->i_track_ID );
1509         return VLC_EGENERIC;
1510     }
1511
1512     p_track->p_sample = p_sample;
1513
1514     if( ( p_frma = MP4_BoxGet( p_track->p_sample, "sinf/frma" ) ) )
1515     {
1516         msg_Warn( p_demux, "Original Format Box: %4.4s", (char *)&p_frma->data.p_frma->i_type );
1517
1518         p_sample->i_type = p_frma->data.p_frma->i_type;
1519     }
1520
1521     p_enda = MP4_BoxGet( p_sample, "wave/enda" );
1522     if( !p_enda )
1523         p_enda = MP4_BoxGet( p_sample, "enda" );
1524
1525     if( p_track->fmt.i_cat == AUDIO_ES && ( p_track->i_sample_size == 1 || p_track->i_sample_size == 2 ) )
1526     {
1527         MP4_Box_data_sample_soun_t *p_soun;
1528
1529         p_soun = p_sample->data.p_sample_soun;
1530
1531         if( p_soun->i_qt_version == 0 )
1532         {
1533             switch( p_sample->i_type )
1534             {
1535                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1536                     p_soun->i_qt_version = 1;
1537                     p_soun->i_sample_per_packet = 64;
1538                     p_soun->i_bytes_per_packet  = 34;
1539                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1540                     p_soun->i_bytes_per_sample  = 2;
1541                     break;
1542                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1543                     p_soun->i_qt_version = 1;
1544                     p_soun->i_sample_per_packet = 6;
1545                     p_soun->i_bytes_per_packet  = 2;
1546                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1547                     p_soun->i_bytes_per_sample  = 2;
1548                     break;
1549                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1550                     p_soun->i_qt_version = 1;
1551                     p_soun->i_sample_per_packet = 12;
1552                     p_soun->i_bytes_per_packet  = 2;
1553                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1554                     p_soun->i_bytes_per_sample  = 2;
1555                     break;
1556                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1557                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1558                     p_soun->i_samplesize = 8;
1559                     p_track->i_sample_size = p_soun->i_channelcount;
1560                     break;
1561                 case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
1562                 case VLC_FOURCC( 'r', 'a', 'w', ' ' ):
1563                 case VLC_FOURCC( 't', 'w', 'o', 's' ):
1564                 case VLC_FOURCC( 's', 'o', 'w', 't' ):
1565                     /* What would be the fun if you could trust the .mov */
1566                     p_track->i_sample_size = ((p_soun->i_samplesize+7)/8) * p_soun->i_channelcount;
1567                     break;
1568                 default:
1569                     break;
1570             }
1571
1572         }
1573         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1574         {
1575             p_soun->i_qt_version = 0;
1576         }
1577     }
1578     else if( p_track->fmt.i_cat == AUDIO_ES && p_sample->data.p_sample_soun->i_qt_version == 1 )
1579     {
1580         MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1581
1582         switch( p_sample->i_type )
1583         {
1584             case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1585             case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1586             {
1587                 if( p_track->i_sample_size > 1 )
1588                     p_soun->i_qt_version = 0;
1589                 break;
1590             }
1591             case( VLC_FOURCC( 'a', 'c', '-', '3' ) ):
1592             case( VLC_FOURCC( 'e', 'c', '-', '3' ) ):
1593             case( VLC_FOURCC( 'm', 's', 0x20, 0x00 ) ):
1594                 p_soun->i_qt_version = 0;
1595                 break;
1596             default:
1597                 break;
1598         }
1599     }
1600
1601     /* */
1602     switch( p_track->fmt.i_cat )
1603     {
1604     case VIDEO_ES:
1605         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1606         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1607         p_track->fmt.video.i_bits_per_pixel =
1608             p_sample->data.p_sample_vide->i_depth;
1609
1610         /* fall on display size */
1611         if( p_track->fmt.video.i_width <= 0 )
1612             p_track->fmt.video.i_width = p_track->i_width;
1613         if( p_track->fmt.video.i_height <= 0 )
1614             p_track->fmt.video.i_height = p_track->i_height;
1615
1616         /* Find out apect ratio from display size */
1617         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1618             /* Work-around buggy muxed files */
1619             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1620         {
1621             p_track->fmt.video.i_sar_num = p_track->i_width  * p_track->fmt.video.i_height;
1622             p_track->fmt.video.i_sar_den = p_track->i_height * p_track->fmt.video.i_width;
1623         }
1624
1625         /* Support for cropping (eg. in H263 files) */
1626         p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1627         p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1628
1629         /* Frame rate */
1630         TrackGetESSampleRate( &p_track->fmt.video.i_frame_rate,
1631                               &p_track->fmt.video.i_frame_rate_base,
1632                               p_track, i_sample_description_index, i_chunk );
1633         p_demux->p_sys->f_fps = (float)p_track->fmt.video.i_frame_rate /
1634                                 (float)p_track->fmt.video.i_frame_rate_base;
1635         break;
1636
1637     case AUDIO_ES:
1638         p_track->fmt.audio.i_channels =
1639             p_sample->data.p_sample_soun->i_channelcount;
1640         p_track->fmt.audio.i_rate =
1641             p_sample->data.p_sample_soun->i_sampleratehi;
1642         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1643             p_sample->data.p_sample_soun->i_sampleratehi *
1644                 p_sample->data.p_sample_soun->i_samplesize;
1645         p_track->fmt.audio.i_bitspersample =
1646             p_sample->data.p_sample_soun->i_samplesize;
1647
1648         if( p_track->i_sample_size != 0 &&
1649             p_sample->data.p_sample_soun->i_qt_version == 1 && p_sample->data.p_sample_soun->i_sample_per_packet <= 0 )
1650         {
1651             msg_Err( p_demux, "Invalid sample per packet value for qt_version 1" );
1652             return VLC_EGENERIC;
1653         }
1654         break;
1655
1656     default:
1657         break;
1658     }
1659
1660
1661     /* It's a little ugly but .. there are special cases */
1662     switch( p_sample->i_type )
1663     {
1664         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1665         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1666         {
1667             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1668             break;
1669         }
1670         case( VLC_FOURCC( 'a', 'c', '-', '3' ) ):
1671         {
1672             MP4_Box_t *p_dac3_box = MP4_BoxGet(  p_sample, "dac3", 0 );
1673
1674             p_track->fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
1675             if( p_dac3_box )
1676             {
1677                 static const int pi_bitrate[] = {
1678                      32,  40,  48,  56,
1679                      64,  80,  96, 112,
1680                     128, 160, 192, 224,
1681                     256, 320, 384, 448,
1682                     512, 576, 640,
1683                 };
1684                 MP4_Box_data_dac3_t *p_dac3 = p_dac3_box->data.p_dac3;
1685                 p_track->fmt.audio.i_channels = 0;
1686                 p_track->fmt.i_bitrate = 0;
1687                 if( p_dac3->i_bitrate_code < sizeof(pi_bitrate)/sizeof(*pi_bitrate) )
1688                     p_track->fmt.i_bitrate = pi_bitrate[p_dac3->i_bitrate_code] * 1000;
1689                 p_track->fmt.audio.i_bitspersample = 0;
1690             }
1691             break;
1692         }
1693         case( VLC_FOURCC( 'e', 'c', '-', '3' ) ):
1694         {
1695             p_track->fmt.i_codec = VLC_FOURCC( 'e', 'a', 'c', '3' );
1696             break;
1697         }
1698
1699         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1700         case( VLC_FOURCC( 'N', 'O', 'N', 'E' ) ):
1701         {
1702             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1703
1704             if(p_soun && (p_soun->i_samplesize+7)/8 == 1 )
1705                 p_track->fmt.i_codec = VLC_FOURCC( 'u', '8', ' ', ' ' );
1706             else
1707                 p_track->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
1708
1709             /* Buggy files workaround */
1710             if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1711                 p_sample->data.p_sample_soun->i_sampleratehi) )
1712             {
1713                 MP4_Box_data_sample_soun_t *p_soun =
1714                     p_sample->data.p_sample_soun;
1715
1716                 msg_Warn( p_demux, "i_timescale (%"PRIu64") != i_sampleratehi "
1717                           "(%u), making both equal (report any problem).",
1718                           p_track->i_timescale, p_soun->i_sampleratehi );
1719
1720                 if( p_soun->i_sampleratehi )
1721                     p_track->i_timescale = p_soun->i_sampleratehi;
1722                 else
1723                     p_soun->i_sampleratehi = p_track->i_timescale;
1724             }
1725             break;
1726         }
1727
1728         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1729             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1730             break;
1731
1732         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1733         case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1734             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1735             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1736             /* FIXME UTF-8 doesn't work here ? */
1737             if( p_track->b_mac_encoding )
1738                 p_track->fmt.subs.psz_encoding = strdup( "MAC" );
1739             else
1740                 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1741             break;
1742
1743         case VLC_FOURCC('y','v','1','2'):
1744             p_track->fmt.i_codec = VLC_FOURCC('Y','V','1','2');
1745             break;
1746         case VLC_FOURCC('y','u','v','2'):
1747             p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
1748             break;
1749
1750         case VLC_FOURCC('i','n','2','4'):
1751             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1752                                     VLC_FOURCC('4','2','n','i') : VLC_FOURCC('i','n','2','4');
1753             break;
1754         case VLC_FOURCC('f','l','3','2'):
1755             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1756                                     VLC_CODEC_F32L : VLC_CODEC_F32B;
1757             break;
1758         case VLC_FOURCC('f','l','6','4'):
1759             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1760                                     VLC_CODEC_F64L : VLC_CODEC_F64B;
1761             break;
1762
1763         default:
1764             p_track->fmt.i_codec = p_sample->i_type;
1765             break;
1766     }
1767
1768     /* now see if esds is present and if so create a data packet
1769         with decoder_specific_info  */
1770 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1771     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1772           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1773         ( p_esds->data.p_esds )&&
1774         ( p_decconfig ) )
1775     {
1776         /* First update information based on i_objectTypeIndication */
1777         switch( p_decconfig->i_objectTypeIndication )
1778         {
1779             case( 0x20 ): /* MPEG4 VIDEO */
1780                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1781                 break;
1782             case( 0x40):
1783                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1784                 if( p_decconfig->i_decoder_specific_info_len >= 2 &&
1785                      p_decconfig->p_decoder_specific_info[0]       == 0xF8 &&
1786                     (p_decconfig->p_decoder_specific_info[1]&0xE0) == 0x80 )
1787                 {
1788                     p_track->fmt.i_codec = VLC_CODEC_ALS;
1789                 }
1790                 break;
1791             case( 0x60):
1792             case( 0x61):
1793             case( 0x62):
1794             case( 0x63):
1795             case( 0x64):
1796             case( 0x65): /* MPEG2 video */
1797                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1798                 break;
1799             /* Theses are MPEG2-AAC */
1800             case( 0x66): /* main profile */
1801             case( 0x67): /* Low complexity profile */
1802             case( 0x68): /* Scaleable Sampling rate profile */
1803                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1804                 break;
1805             /* true MPEG 2 audio */
1806             case( 0x69):
1807                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1808                 break;
1809             case( 0x6a): /* MPEG1 video */
1810                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1811                 break;
1812             case( 0x6b): /* MPEG1 audio */
1813                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1814                 break;
1815             case( 0x6c ): /* jpeg */
1816                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1817                 break;
1818             case( 0x6d ): /* png */
1819                 p_track->fmt.i_codec = VLC_FOURCC( 'p','n','g',' ' );
1820                 break;
1821             case( 0x6e ): /* jpeg200 */
1822                 p_track->fmt.i_codec = VLC_FOURCC( 'M','J','2','C' );
1823                 break;
1824             case( 0xa3 ): /* vc1 */
1825                 p_track->fmt.i_codec = VLC_FOURCC( 'W','V','C','1' );
1826                 break;
1827
1828             /* Private ID */
1829             case( 0xe0 ): /* NeroDigital: dvd subs */
1830                 if( p_track->fmt.i_cat == SPU_ES )
1831                 {
1832                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1833                     if( p_track->i_width > 0 )
1834                         p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1835                     if( p_track->i_height > 0 )
1836                         p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1837                     break;
1838                 }
1839             case( 0xe1 ): /* QCelp for 3gp */
1840                 if( p_track->fmt.i_cat == AUDIO_ES )
1841                 {
1842                     p_track->fmt.i_codec = VLC_FOURCC( 'Q','c','l','p' );
1843                 }
1844                 break;
1845
1846             /* Fallback */
1847             default:
1848                 /* Unknown entry, but don't touch i_fourcc */
1849                 msg_Warn( p_demux,
1850                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1851                           p_decconfig->i_objectTypeIndication,
1852                           p_track->i_track_ID );
1853                 break;
1854         }
1855         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1856         if( p_track->fmt.i_extra > 0 )
1857         {
1858             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1859             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1860                     p_track->fmt.i_extra );
1861         }
1862     }
1863     else
1864     {
1865         switch( p_sample->i_type )
1866         {
1867             /* qt decoder, send the complete chunk */
1868             case VLC_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
1869             case VLC_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
1870             case VLC_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
1871             case VLC_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
1872             case VLC_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
1873             case VLC_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
1874             case VLC_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
1875             case VLC_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
1876             case VLC_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
1877             case VLC_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
1878             case VLC_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
1879             case VLC_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
1880                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1881                 break;
1882             /* qt decoder, send the complete chunk */
1883             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1884             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1885             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1886             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1887             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1888                 p_track->fmt.i_extra =
1889                     p_sample->data.p_sample_vide->i_qt_image_description;
1890                 if( p_track->fmt.i_extra > 0 )
1891                 {
1892                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1893                     memcpy( p_track->fmt.p_extra,
1894                             p_sample->data.p_sample_vide->p_qt_image_description,
1895                             p_track->fmt.i_extra);
1896                 }
1897                 break;
1898             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1899                 p_track->fmt.audio.i_rate = 8000;
1900             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1901             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1902             case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1903                 p_track->fmt.i_extra =
1904                     p_sample->data.p_sample_soun->i_qt_description;
1905                 if( p_track->fmt.i_extra > 0 )
1906                 {
1907                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1908                     memcpy( p_track->fmt.p_extra,
1909                             p_sample->data.p_sample_soun->p_qt_description,
1910                             p_track->fmt.i_extra);
1911                 }
1912                 break;
1913
1914             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1915             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1916             {
1917                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1918
1919                 if( p_avcC )
1920                 {
1921                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1922                     if( p_track->fmt.i_extra > 0 )
1923                     {
1924                         p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1925                         memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1926                                 p_track->fmt.i_extra );
1927                     }
1928                 }
1929                 else
1930                 {
1931                     msg_Err( p_demux, "missing avcC" );
1932                 }
1933                 break;
1934             }
1935
1936             case VLC_FOURCC('m','s',0x00,0x02):
1937             case VLC_FOURCC('m','s',0x00,0x11):
1938             case VLC_FOURCC('Q','c','l','p'):
1939                 p_track->fmt.audio.i_blockalign = p_sample->data.p_sample_soun->i_bytes_per_frame;
1940                 break;
1941
1942             default:
1943                 break;
1944         }
1945     }
1946
1947 #undef p_decconfig
1948
1949     if( pp_es )
1950         *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1951
1952     return VLC_SUCCESS;
1953 }
1954
1955 /* given a time it return sample/chunk
1956  * it also update elst field of the track
1957  */
1958 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1959                                    int64_t i_start, uint32_t *pi_chunk,
1960                                    uint32_t *pi_sample )
1961 {
1962     demux_sys_t *p_sys = p_demux->p_sys;
1963     MP4_Box_t   *p_box_stss;
1964     uint64_t     i_dts;
1965     unsigned int i_sample;
1966     unsigned int i_chunk;
1967     int          i_index;
1968
1969     /* FIXME see if it's needed to check p_track->i_chunk_count */
1970     if( p_track->i_chunk_count == 0 )
1971         return( VLC_EGENERIC );
1972
1973     /* handle elst (find the correct one) */
1974     MP4_TrackSetELST( p_demux, p_track, i_start );
1975     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1976     {
1977         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1978         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1979
1980         /* now calculate i_start for this elst */
1981         /* offset */
1982         i_start -= p_track->i_elst_time * INT64_C(1000000) / p_sys->i_timescale;
1983         if( i_start < 0 )
1984         {
1985             *pi_chunk = 0;
1986             *pi_sample= 0;
1987
1988             return VLC_SUCCESS;
1989         }
1990         /* to track time scale */
1991         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1992         /* add elst offset */
1993         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1994              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1995             elst->i_media_time[p_track->i_elst] > 0 )
1996         {
1997             i_start += elst->i_media_time[p_track->i_elst];
1998         }
1999
2000         msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
2001                  "ms (track)", p_track->i_elst,
2002                  i_mvt * 1000 / p_sys->i_timescale,
2003                  i_start * 1000 / p_track->i_timescale );
2004     }
2005     else
2006     {
2007         /* convert absolute time to in timescale unit */
2008         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
2009     }
2010
2011     /* we start from sample 0/chunk 0, hope it won't take too much time */
2012     /* *** find good chunk *** */
2013     for( i_chunk = 0; ; i_chunk++ )
2014     {
2015         if( i_chunk + 1 >= p_track->i_chunk_count )
2016         {
2017             /* at the end and can't check if i_start in this chunk,
2018                it will be check while searching i_sample */
2019             i_chunk = p_track->i_chunk_count - 1;
2020             break;
2021         }
2022
2023         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
2024             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
2025         {
2026             break;
2027         }
2028     }
2029
2030     /* *** find sample in the chunk *** */
2031     i_sample = p_track->chunk[i_chunk].i_sample_first;
2032     i_dts    = p_track->chunk[i_chunk].i_first_dts;
2033     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
2034     {
2035         if( i_dts +
2036             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
2037             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
2038         {
2039             i_dts    +=
2040                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
2041                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
2042
2043             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
2044             i_index++;
2045         }
2046         else
2047         {
2048             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
2049             {
2050                 break;
2051             }
2052             i_sample += ( i_start - i_dts ) /
2053                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
2054             break;
2055         }
2056     }
2057
2058     if( i_sample >= p_track->i_sample_count )
2059     {
2060         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
2061                   "(seeking too far) chunk=%d sample=%d",
2062                   p_track->i_track_ID, i_chunk, i_sample );
2063         return( VLC_EGENERIC );
2064     }
2065
2066
2067     /* *** Try to find nearest sync points *** */
2068     if( ( p_box_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
2069     {
2070         MP4_Box_data_stss_t *p_stss = p_box_stss->data.p_stss;
2071         msg_Dbg( p_demux, "track[Id 0x%x] using Sync Sample Box (stss)",
2072                  p_track->i_track_ID );
2073         for( unsigned i_index = 0; i_index < p_stss->i_entry_count; i_index++ )
2074         {
2075             if( i_index >= p_stss->i_entry_count - 1 ||
2076                 i_sample < p_stss->i_sample_number[i_index+1] )
2077             {
2078                 unsigned i_sync_sample = p_stss->i_sample_number[i_index];
2079                 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
2080                          i_sample, i_sync_sample );
2081
2082                 if( i_sync_sample <= i_sample )
2083                 {
2084                     while( i_chunk > 0 &&
2085                            i_sync_sample < p_track->chunk[i_chunk].i_sample_first )
2086                         i_chunk--;
2087                 }
2088                 else
2089                 {
2090                     while( i_chunk < p_track->i_chunk_count - 1 &&
2091                            i_sync_sample >= p_track->chunk[i_chunk].i_sample_first +
2092                                             p_track->chunk[i_chunk].i_sample_count )
2093                         i_chunk++;
2094                 }
2095                 i_sample = i_sync_sample;
2096                 break;
2097             }
2098         }
2099     }
2100     else
2101     {
2102         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
2103                  "Sample Box (stss)", p_track->i_track_ID );
2104     }
2105
2106     *pi_chunk  = i_chunk;
2107     *pi_sample = i_sample;
2108
2109     return VLC_SUCCESS;
2110 }
2111
2112 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
2113                                  unsigned int i_chunk, unsigned int i_sample )
2114 {
2115     bool b_reselect = false;
2116
2117     /* now see if actual es is ok */
2118     if( p_track->i_chunk >= p_track->i_chunk_count ||
2119         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
2120             p_track->chunk[i_chunk].i_sample_description_index )
2121     {
2122         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
2123                   p_track->i_track_ID );
2124
2125         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
2126                         p_track->p_es, &b_reselect );
2127
2128         es_out_Del( p_demux->out, p_track->p_es );
2129
2130         p_track->p_es = NULL;
2131
2132         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
2133         {
2134             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2135                      p_track->i_track_ID );
2136
2137             p_track->b_ok       = false;
2138             p_track->b_selected = false;
2139             return VLC_EGENERIC;
2140         }
2141     }
2142
2143     /* select again the new decoder */
2144     if( b_reselect )
2145     {
2146         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
2147     }
2148
2149     p_track->i_chunk    = i_chunk;
2150     p_track->i_sample   = i_sample;
2151
2152     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2153 }
2154
2155 /****************************************************************************
2156  * MP4_TrackCreate:
2157  ****************************************************************************
2158  * Parse track information and create all needed data to run a track
2159  * If it succeed b_ok is set to 1 else to 0
2160  ****************************************************************************/
2161 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
2162                              MP4_Box_t *p_box_trak,
2163                              bool b_force_enable )
2164 {
2165     demux_sys_t *p_sys = p_demux->p_sys;
2166
2167     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
2168     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
2169     MP4_Box_t *p_elst;
2170
2171     MP4_Box_t *p_mdhd;
2172     MP4_Box_t *p_udta;
2173     MP4_Box_t *p_hdlr;
2174
2175     MP4_Box_t *p_vmhd;
2176     MP4_Box_t *p_smhd;
2177
2178     MP4_Box_t *p_drms;
2179
2180     unsigned int i;
2181     char language[4];
2182
2183     /* hint track unsupported */
2184
2185     /* set default value (-> track unusable) */
2186     p_track->b_ok       = false;
2187     p_track->b_enable   = false;
2188     p_track->b_selected = false;
2189     p_track->b_chapter  = false;
2190     p_track->b_mac_encoding = false;
2191
2192     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
2193
2194     if( !p_tkhd )
2195     {
2196         return;
2197     }
2198
2199     /* do we launch this track by default ? */
2200     p_track->b_enable =
2201         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
2202     if( !p_track->b_enable )
2203         p_track->fmt.i_priority = -1;
2204
2205     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
2206     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
2207     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
2208
2209     if( p_tref )
2210     {
2211 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
2212     }
2213
2214     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
2215     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
2216
2217     if( ( !p_mdhd )||( !p_hdlr ) )
2218     {
2219         return;
2220     }
2221
2222     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
2223     if( !p_track->i_timescale )
2224         return;
2225
2226     if( p_mdhd->data.p_mdhd->i_language_code < 0x800 )
2227     {
2228         /* We can convert i_language_code into iso 639 code,
2229          * I won't */
2230         strcpy( language, MP4_ConvertMacCode( p_mdhd->data.p_mdhd->i_language_code ) );
2231         p_track->b_mac_encoding = true;
2232     }
2233     else
2234     {
2235         for( i = 0; i < 3; i++ )
2236             language[i] = p_mdhd->data.p_mdhd->i_language[i];
2237         language[3] = '\0';
2238     }
2239
2240     switch( p_hdlr->data.p_hdlr->i_handler_type )
2241     {
2242         case( FOURCC_soun ):
2243             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2244             {
2245                 return;
2246             }
2247             p_track->fmt.i_cat = AUDIO_ES;
2248             break;
2249
2250         case( FOURCC_vide ):
2251             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2252             {
2253                 return;
2254             }
2255             p_track->fmt.i_cat = VIDEO_ES;
2256             break;
2257
2258         case( FOURCC_text ):
2259         case( FOURCC_subp ):
2260         case( FOURCC_tx3g ):
2261         case( FOURCC_sbtl ):
2262             p_track->fmt.i_cat = SPU_ES;
2263             break;
2264
2265         default:
2266             return;
2267     }
2268
2269     p_track->i_elst = 0;
2270     p_track->i_elst_time = 0;
2271     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2272     {
2273         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
2274         unsigned int i;
2275
2276         msg_Warn( p_demux, "elst box found" );
2277         for( i = 0; i < elst->i_entry_count; i++ )
2278         {
2279             msg_Dbg( p_demux, "   - [%d] duration=%"PRId64"ms media time=%"PRId64
2280                      "ms) rate=%d.%d", i,
2281                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2282                      elst->i_media_time[i] >= 0 ?
2283                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2284                      INT64_C(-1),
2285                      elst->i_media_rate_integer[i],
2286                      elst->i_media_rate_fraction[i] );
2287         }
2288     }
2289
2290
2291 /*  TODO
2292     add support for:
2293     p_dinf = MP4_BoxGet( p_minf, "dinf" );
2294 */
2295     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2296         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2297     {
2298         return;
2299     }
2300
2301     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
2302     p_track->b_drms = p_drms != NULL;
2303     p_track->p_drms = p_track->b_drms ?
2304         p_drms->data.p_sample_soun->p_drms : NULL;
2305
2306     if ( !p_drms )
2307     {
2308         p_drms = MP4_BoxGet( p_track->p_stsd, "drmi" );
2309         p_track->b_drms = p_drms != NULL;
2310         p_track->p_drms = p_track->b_drms ?
2311             p_drms->data.p_sample_vide->p_drms : NULL;
2312     }
2313
2314     if( p_drms )
2315         p_track->p_skcr = MP4_BoxGet( p_drms, "sinf/skcr" );
2316
2317     /* Set language */
2318     if( *language && strcmp( language, "```" ) && strcmp( language, "und" ) )
2319     {
2320         p_track->fmt.psz_language = strdup( language );
2321     }
2322
2323     p_udta = MP4_BoxGet( p_box_trak, "udta" );
2324     if( p_udta )
2325     {
2326         MP4_Box_t *p_0xa9xxx;
2327         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
2328                  p_0xa9xxx = p_0xa9xxx->p_next )
2329         {
2330             switch( p_0xa9xxx->i_type )
2331             {
2332                 case FOURCC_0xa9nam:
2333                     p_track->fmt.psz_description =
2334                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
2335                     break;
2336             }
2337         }
2338     }
2339
2340     /* Create chunk index table and sample index table */
2341     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
2342         TrackCreateSamplesIndex( p_demux, p_track ) )
2343     {
2344         return; /* cannot create chunks index */
2345     }
2346
2347     p_track->i_chunk  = 0;
2348     p_track->i_sample = 0;
2349
2350     /* Mark chapter only track */
2351     if( p_sys->p_tref_chap )
2352     {
2353         MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2354         unsigned int i;
2355
2356         for( i = 0; i < p_chap->i_entry_count; i++ )
2357         {
2358             if( p_track->i_track_ID == p_chap->i_track_ID[i] )
2359             {
2360                 p_track->b_chapter = true;
2361                 p_track->b_enable = false;
2362                 break;
2363             }
2364         }
2365     }
2366
2367     /* now create es */
2368     if( b_force_enable &&
2369         ( p_track->fmt.i_cat == VIDEO_ES || p_track->fmt.i_cat == AUDIO_ES ) )
2370     {
2371         msg_Warn( p_demux, "Enabling track[Id 0x%x] (buggy file without enabled track)",
2372                   p_track->i_track_ID );
2373         p_track->b_enable = true;
2374         p_track->fmt.i_priority = 0;
2375     }
2376
2377     p_track->p_es = NULL;
2378     if( TrackCreateES( p_demux,
2379                        p_track, p_track->i_chunk,
2380                        p_track->b_chapter ? NULL : &p_track->p_es ) )
2381     {
2382         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2383                  p_track->i_track_ID );
2384         return;
2385     }
2386     p_track->b_ok = true;
2387 #if 0
2388     {
2389         int i;
2390         for( i = 0; i < p_track->i_chunk_count; i++ )
2391         {
2392             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2393                      i, p_track->chunk[i].i_sample_count,
2394                      p_track->chunk[i].i_first_dts );
2395
2396         }
2397     }
2398 #endif
2399 }
2400
2401 /****************************************************************************
2402  * MP4_TrackDestroy:
2403  ****************************************************************************
2404  * Destroy a track created by MP4_TrackCreate.
2405  ****************************************************************************/
2406 static void MP4_TrackDestroy( mp4_track_t *p_track )
2407 {
2408     unsigned int i_chunk;
2409
2410     p_track->b_ok = false;
2411     p_track->b_enable   = false;
2412     p_track->b_selected = false;
2413
2414     es_format_Clean( &p_track->fmt );
2415
2416     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2417     {
2418         if( p_track->chunk )
2419         {
2420            FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2421            FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2422
2423            FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2424            FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2425         }
2426     }
2427     FREENULL( p_track->chunk );
2428
2429     if( !p_track->i_sample_size )
2430     {
2431         FREENULL( p_track->p_sample_size );
2432     }
2433 }
2434
2435 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2436                             mtime_t i_start )
2437 {
2438     if( !p_track->b_ok || p_track->b_chapter )
2439     {
2440         return VLC_EGENERIC;
2441     }
2442
2443     if( p_track->b_selected )
2444     {
2445         msg_Warn( p_demux, "track[Id 0x%x] already selected",
2446                   p_track->i_track_ID );
2447         return VLC_SUCCESS;
2448     }
2449
2450     return MP4_TrackSeek( p_demux, p_track, i_start );
2451 }
2452
2453 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2454 {
2455     if( !p_track->b_ok || p_track->b_chapter )
2456     {
2457         return;
2458     }
2459
2460     if( !p_track->b_selected )
2461     {
2462         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2463                   p_track->i_track_ID );
2464         return;
2465     }
2466     if( p_track->p_es )
2467     {
2468         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2469                         p_track->p_es, false );
2470     }
2471
2472     p_track->b_selected = false;
2473 }
2474
2475 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2476                           mtime_t i_start )
2477 {
2478     uint32_t i_chunk;
2479     uint32_t i_sample;
2480
2481     if( !p_track->b_ok || p_track->b_chapter )
2482         return VLC_EGENERIC;
2483
2484     p_track->b_selected = false;
2485
2486     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2487                                 &i_chunk, &i_sample ) )
2488     {
2489         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2490                   p_track->i_track_ID );
2491         return VLC_EGENERIC;
2492     }
2493
2494     p_track->b_selected = true;
2495
2496     if( !TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) )
2497         p_track->b_selected = true;
2498
2499     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2500 }
2501
2502
2503 /*
2504  * 3 types: for audio
2505  *
2506  */
2507 #define QT_V0_MAX_SAMPLES 1024
2508 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2509 {
2510     int i_size;
2511     MP4_Box_data_sample_soun_t *p_soun;
2512
2513     if( p_track->i_sample_size == 0 )
2514     {
2515         /* most simple case */
2516         return p_track->p_sample_size[p_track->i_sample];
2517     }
2518     if( p_track->fmt.i_cat != AUDIO_ES )
2519     {
2520         return p_track->i_sample_size;
2521     }
2522
2523     p_soun = p_track->p_sample->data.p_sample_soun;
2524
2525     if( p_soun->i_qt_version == 1 )
2526     {
2527         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count;
2528         if( p_track->fmt.audio.i_blockalign > 1 )
2529             i_samples = p_soun->i_sample_per_packet;
2530
2531         i_size = i_samples / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2532     }
2533     else if( p_track->i_sample_size > 256 )
2534     {
2535         /* We do that so we don't read too much data
2536          * (in this case we are likely dealing with compressed data) */
2537         i_size = p_track->i_sample_size;
2538     }
2539     else
2540     {
2541         /* Read a bunch of samples at once */
2542         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2543             ( p_track->i_sample -
2544               p_track->chunk[p_track->i_chunk].i_sample_first );
2545
2546         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2547         i_size = i_samples * p_track->i_sample_size;
2548     }
2549
2550     //fprintf( stderr, "size=%d\n", i_size );
2551     return i_size;
2552 }
2553
2554 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2555 {
2556     unsigned int i_sample;
2557     uint64_t i_pos;
2558
2559     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2560
2561     if( p_track->i_sample_size )
2562     {
2563         MP4_Box_data_sample_soun_t *p_soun =
2564             p_track->p_sample->data.p_sample_soun;
2565
2566         if( p_soun->i_qt_version == 0 )
2567         {
2568             i_pos += ( p_track->i_sample -
2569                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
2570                      p_track->i_sample_size;
2571         }
2572         else
2573         {
2574             /* we read chunk by chunk unless a blockalign is requested */
2575             if( p_track->fmt.audio.i_blockalign > 1 )
2576                 i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) /
2577                                 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2578         }
2579     }
2580     else
2581     {
2582         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2583              i_sample < p_track->i_sample; i_sample++ )
2584         {
2585             i_pos += p_track->p_sample_size[i_sample];
2586         }
2587     }
2588
2589     return i_pos;
2590 }
2591
2592 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2593 {
2594     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2595     {
2596         MP4_Box_data_sample_soun_t *p_soun;
2597
2598         p_soun = p_track->p_sample->data.p_sample_soun;
2599
2600         if( p_soun->i_qt_version == 1 )
2601         {
2602             /* we read chunk by chunk unless a blockalign is requested */
2603             if( p_track->fmt.audio.i_blockalign > 1 )
2604                 p_track->i_sample += p_soun->i_sample_per_packet;
2605             else
2606                 p_track->i_sample += p_track->chunk[p_track->i_chunk].i_sample_count;
2607         }
2608         else if( p_track->i_sample_size > 256 )
2609         {
2610             /* We do that so we don't read too much data
2611              * (in this case we are likely dealing with compressed data) */
2612             p_track->i_sample += 1;
2613         }
2614         else
2615         {
2616             /* FIXME */
2617             p_track->i_sample += QT_V0_MAX_SAMPLES;
2618             if( p_track->i_sample >
2619                 p_track->chunk[p_track->i_chunk].i_sample_first +
2620                 p_track->chunk[p_track->i_chunk].i_sample_count )
2621             {
2622                 p_track->i_sample =
2623                     p_track->chunk[p_track->i_chunk].i_sample_first +
2624                     p_track->chunk[p_track->i_chunk].i_sample_count;
2625             }
2626         }
2627     }
2628     else
2629     {
2630         p_track->i_sample++;
2631     }
2632
2633     if( p_track->i_sample >= p_track->i_sample_count )
2634         return VLC_EGENERIC;
2635
2636     /* Have we changed chunk ? */
2637     if( p_track->i_sample >=
2638             p_track->chunk[p_track->i_chunk].i_sample_first +
2639             p_track->chunk[p_track->i_chunk].i_sample_count )
2640     {
2641         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2642                                   p_track->i_sample ) )
2643         {
2644             msg_Warn( p_demux, "track[0x%x] will be disabled "
2645                       "(cannot restart decoder)", p_track->i_track_ID );
2646             MP4_TrackUnselect( p_demux, p_track );
2647             return VLC_EGENERIC;
2648         }
2649     }
2650
2651     /* Have we changed elst */
2652     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2653     {
2654         demux_sys_t *p_sys = p_demux->p_sys;
2655         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2656         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2657                         p_sys->i_timescale / (int64_t)1000000;
2658
2659         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2660             i_mvt >= p_track->i_elst_time +
2661                      elst->i_segment_duration[p_track->i_elst] )
2662         {
2663             MP4_TrackSetELST( p_demux, p_track,
2664                               MP4_TrackGetDTS( p_demux, p_track ) );
2665         }
2666     }
2667
2668     return VLC_SUCCESS;
2669 }
2670
2671 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2672                               int64_t i_time )
2673 {
2674     demux_sys_t *p_sys = p_demux->p_sys;
2675     int         i_elst_last = tk->i_elst;
2676
2677     /* handle elst (find the correct one) */
2678     tk->i_elst      = 0;
2679     tk->i_elst_time = 0;
2680     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2681     {
2682         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2683         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2684
2685         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2686         {
2687             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2688
2689             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2690             {
2691                 break;
2692             }
2693             tk->i_elst_time += i_dur;
2694         }
2695
2696         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2697         {
2698             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2699             tk->i_elst = elst->i_entry_count - 1;
2700             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2701         }
2702
2703         if( elst->i_media_time[tk->i_elst] < 0 )
2704         {
2705             /* track offset */
2706             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2707         }
2708     }
2709     if( i_elst_last != tk->i_elst )
2710     {
2711         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2712     }
2713 }
2714
2715 /* */
2716 static const char *MP4_ConvertMacCode( uint16_t i_code )
2717 {
2718     static const struct { const char *psz_iso639_1; uint16_t i_code; } p_cvt[] = {
2719         { "en",   0 }, { "fr",   1 }, { "de",   2 }, { "it",   3 }, { "nl",   4 },
2720         { "sv",   5 }, { "es",   6 }, { "da",   7 }, { "pt",   8 }, { "no",   9 },
2721         { "he",  10 }, { "ja",  11 }, { "ar",  12 }, { "fi",  13 }, { "el",  14 },
2722         { "is",  15 }, { "mt",  16 }, { "tr",  17 }, { "hr",  18 }, { "zh",  19 },
2723         { "ur",  20 }, { "hi",  21 }, { "th",  22 }, { "ko",  23 }, { "lt",  24 },
2724         { "pl",  25 }, { "hu",  26 }, { "et",  27 }, { "lv",  28 }, //{ "??",  29 },
2725         { "fo",  30 }, { "fa",  31 }, { "ru",  32 }, { "zh",  33 }, { "nl",  34 },
2726         { "ga",  35 }, { "sq",  36 }, { "ro",  37 }, { "cs",  38 }, { "sk",  39 },
2727         { "sl",  40 }, { "yi",  41 }, { "sr",  42 }, { "mk",  43 }, { "bg",  44 },
2728         { "uk",  45 }, { "be",  46 }, { "uz",  47 }, { "az",  48 }, { "kk",  48 },
2729         { "az",  50 }, { "hy",  51 }, { "ka",  52 }, { "mo",  53 }, { "ky",  54 },
2730         { "tg",  55 }, { "tk",  56 }, { "mn",  57 }, { "mn",  58 }, { "ps",  59 },
2731         { "ku",  60 }, { "ks",  61 }, { "sd",  62 }, { "bo",  63 }, { "ne",  64 },
2732         { "sa",  65 }, { "mr",  66 }, { "bn",  67 }, { "as",  68 }, { "gu",  69 },
2733         { "pa",  70 }, { "or",  71 }, { "ml",  72 }, { "kn",  73 }, { "ta",  74 },
2734         { "te",  75 }, { "si",  76 }, { "my",  77 }, { "km",  78 }, { "lo",  79 },
2735         { "vi",  80 }, { "id",  81 }, { "tl",  82 }, { "ms",  83 }, { "ms",  84 },
2736         { "am",  85 }, { "ti",  86 }, { "om",  87 }, { "so",  88 }, { "sw",  89 },
2737         { "rw",  90 }, { "rn",  91 }, { "ny",  92 }, { "mg",  93 }, { "eo",  94 },
2738
2739                                                      { "cy", 128 }, { "eu", 129 },
2740         { "ca", 130 }, { "la", 131 }, { "qu", 132 }, { "gn", 133 }, { "ay", 134 },
2741         { "tt", 135 }, { "ug", 136 }, { "dz", 137 }, { "jv", 138 }, { "su", 139 },
2742         { "gl", 140 }, { "af", 141 }, { "br", 142 }, { "iu", 143 }, { "gd", 144 },
2743         { "gv", 145 }, { "ga", 146 }, { "to", 147 }, { "el", 148 },
2744         /* */
2745         { NULL, 0 }
2746     };
2747     int i;
2748     for( i = 0; p_cvt[i].psz_iso639_1 != NULL; i++ )
2749     {
2750         if( p_cvt[i].i_code == i_code )
2751             return p_cvt[i].psz_iso639_1;
2752     }
2753     return "";
2754 }