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

   1 /*****************************************************************************
   2  * mp4.c : MP4 file input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 the VideoLAN team
   5  * $Id$
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32 #include <vlc_plugin.h>
  33
  34
  35 #include <vlc_demux.h>
  36 #include <vlc_md5.h>
  37 #include <vlc_charset.h>
  38 #include <vlc_iso_lang.h>
  39 #include <vlc_meta.h>
  40 #include <vlc_input.h>
  41
  42 #include "libmp4.h"
  43 #include "drms.h"
  44
  45 /*****************************************************************************
  46  * Module descriptor
  47  *****************************************************************************/
  48 static int  Open ( vlc_object_t * );
  49 static void Close( vlc_object_t * );
  50
  51 vlc_module_begin ()
  52     set_category( CAT_INPUT )
  53     set_subcategory( SUBCAT_INPUT_DEMUX )
  54     set_description( N_("MP4 stream demuxer") )
  55     set_shortname( N_("MP4") )
  56     set_capability( "demux", 242 )
  57     set_callbacks( Open, Close )
  58 vlc_module_end ()
  59
  60 /*****************************************************************************
  61  * Local prototypes
  62  *****************************************************************************/
  63 static int   Demux   ( demux_t * );
  64 static int   DemuxRef( demux_t *p_demux ){ (void)p_demux; return 0;}
  65 static int   Seek    ( demux_t *, mtime_t );
  66 static int   Control ( demux_t *, int, va_list );
  67
  68 /* Contain all information about a chunk */
  69 typedef struct
  70 {
  71     uint64_t     i_offset; /* absolute position of this chunk in the file */
  72     uint32_t     i_sample_description_index; /* index for SampleEntry to use */
  73     uint32_t     i_sample_count; /* how many samples in this chunk */
  74     uint32_t     i_sample_first; /* index of the first sample in this chunk */
  75
  76     /* now provide way to calculate pts, dts, and offset without too
  77         much memory and with fast access */
  78
  79     /* with this we can calculate dts/pts without waste memory */
  80     uint64_t     i_first_dts;   /* DTS of the first sample */
  81     uint64_t     i_last_dts;    /* DTS of the last sample */
  82     uint32_t     *p_sample_count_dts;
  83     uint32_t     *p_sample_delta_dts;   /* dts delta */
  84
  85     uint32_t     *p_sample_count_pts;
  86     int32_t      *p_sample_offset_pts;  /* pts-dts */
  87
  88     /* TODO if needed add pts
  89         but quickly *add* support for edts and seeking */
  90
  91 } mp4_chunk_t;
  92
  93  /* Contain all needed information for read all track with vlc */
  94 typedef struct
  95 {
  96     unsigned int i_track_ID;/* this should be unique */
  97
  98     int b_ok;               /* The track is usable */
  99     int b_enable;           /* is the trak enable by default */
 100     bool b_selected;  /* is the trak being played */
 101     bool b_chapter;   /* True when used for chapter only */
 102
 103     bool b_mac_encoding;
 104
 105     es_format_t fmt;
 106     es_out_id_t *p_es;
 107
 108     /* display size only ! */
 109     int i_width;
 110     int i_height;
 111
 112     /* more internal data */
 113     uint64_t        i_timescale;    /* time scale for this track only */
 114
 115     /* elst */
 116     int             i_elst;         /* current elst */
 117     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 118     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 119
 120     /* give the next sample to read, i_chunk is to find quickly where
 121       the sample is located */
 122     uint32_t         i_sample;       /* next sample to read */
 123     uint32_t         i_chunk;        /* chunk where next sample is stored */
 124     /* total count of chunk and sample */
 125     uint32_t         i_chunk_count;
 126     uint32_t         i_sample_count;
 127
 128     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 129
 130     /* sample size, p_sample_size defined only if i_sample_size == 0
 131         else i_sample_size is size for all sample */
 132     uint32_t         i_sample_size;
 133     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 134                                     too much time to do sumations each time*/
 135
 136     MP4_Box_t *p_stbl;  /* will contain all timing information */
 137     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 138     MP4_Box_t *p_sample;/* point on actual sdsd */
 139
 140     bool b_drms;
 141     void      *p_drms;
 142     MP4_Box_t *p_skcr;
 143
 144 } mp4_track_t;
 145
 146
 147 struct demux_sys_t
 148 {
 149     MP4_Box_t    *p_root;      /* container for the whole file */
 150
 151     mtime_t      i_pcr;
 152
 153     uint64_t     i_time;         /* time position of the presentation
 154                                   * in movie timescale */
 155     uint64_t     i_timescale;    /* movie time scale */
 156     uint64_t     i_duration;     /* movie duration */
 157     unsigned int i_tracks;       /* number of tracks */
 158     mp4_track_t  *track;         /* array of track */
 159     float        f_fps;          /* number of frame per seconds */
 160
 161     /* */
 162     MP4_Box_t    *p_tref_chap;
 163
 164     /* */
 165     input_title_t *p_title;
 166 };
 167
 168 /*****************************************************************************
 169  * Declaration of local function
 170  *****************************************************************************/
 171 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *, bool b_force_enable );
 172 static void MP4_TrackDestroy(  mp4_track_t * );
 173
 174 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 175 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 176
 177 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 178
 179 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 180 static int      MP4_TrackSampleSize( mp4_track_t * );
 181 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 182 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 183
 184 static void     MP4_UpdateSeekpoint( demux_t * );
 185 static const char *MP4_ConvertMacCode( uint16_t );
 186
 187 /* Return time in s of a track */
 188 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 189 {
 190 #define chunk p_track->chunk[p_track->i_chunk]
 191
 192     unsigned int i_index = 0;
 193     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 194     int64_t i_dts = chunk.i_first_dts;
 195
 196     while( i_sample > 0 )
 197     {
 198         if( i_sample > chunk.p_sample_count_dts[i_index] )
 199         {
 200             i_dts += chunk.p_sample_count_dts[i_index] *
 201                 chunk.p_sample_delta_dts[i_index];
 202             i_sample -= chunk.p_sample_count_dts[i_index];
 203             i_index++;
 204         }
 205         else
 206         {
 207             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 208             break;
 209         }
 210     }
 211
 212 #undef chunk
 213
 214     /* now handle elst */
 215     if( p_track->p_elst )
 216     {
 217         demux_sys_t         *p_sys = p_demux->p_sys;
 218         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 219
 220         /* convert to offset */
 221         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 222               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 223             elst->i_media_time[p_track->i_elst] > 0 )
 224         {
 225             i_dts -= elst->i_media_time[p_track->i_elst];
 226         }
 227
 228         /* add i_elst_time */
 229         i_dts += p_track->i_elst_time * p_track->i_timescale /
 230             p_sys->i_timescale;
 231
 232         if( i_dts < 0 ) i_dts = 0;
 233     }
 234
 235     return INT64_C(1000000) * i_dts / p_track->i_timescale;
 236 }
 237
 238 static inline int64_t MP4_TrackGetPTSDelta( mp4_track_t *p_track )
 239 {
 240     mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
 241     unsigned int i_index = 0;
 242     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 243
 244     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 245         return -1;
 246
 247     for( i_index = 0;; i_index++ )
 248     {
 249         if( i_sample < ck->p_sample_count_pts[i_index] )
 250             return ck->p_sample_offset_pts[i_index] * INT64_C(1000000) /
 251                    (int64_t)p_track->i_timescale;
 252
 253         i_sample -= ck->p_sample_count_pts[i_index];
 254     }
 255 }
 256
 257 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 258 {
 259     return INT64_C(1000000) * p_sys->i_time / p_sys->i_timescale;
 260 }
 261
 262 static void LoadChapter( demux_t  *p_demux );
 263
 264 /*****************************************************************************
 265  * Open: check file and initializes MP4 structures
 266  *****************************************************************************/
 267 static int Open( vlc_object_t * p_this )
 268 {
 269     demux_t  *p_demux = (demux_t *)p_this;
 270     demux_sys_t     *p_sys;
 271
 272     const uint8_t   *p_peek;
 273
 274     MP4_Box_t       *p_ftyp;
 275     MP4_Box_t       *p_rmra;
 276     MP4_Box_t       *p_mvhd;
 277     MP4_Box_t       *p_trak;
 278
 279     unsigned int    i;
 280     bool      b_seekable;
 281     bool      b_enabled_es;
 282
 283     /* A little test to see if it could be a mp4 */
 284     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
 285
 286     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 287     {
 288         case FOURCC_ftyp:
 289         case FOURCC_moov:
 290         case FOURCC_foov:
 291         case FOURCC_moof:
 292         case FOURCC_mdat:
 293         case FOURCC_udta:
 294         case FOURCC_free:
 295         case FOURCC_skip:
 296         case FOURCC_wide:
 297         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 298             break;
 299          default:
 300             return VLC_EGENERIC;
 301     }
 302
 303     /* I need to seek */
 304     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 305     if( !b_seekable )
 306     {
 307         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 308         return VLC_EGENERIC;
 309     }
 310
 311     /*Set exported functions */
 312     p_demux->pf_demux = Demux;
 313     p_demux->pf_control = Control;
 314
 315     /* create our structure that will contains all data */
 316     p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
 317
 318     /* Now load all boxes ( except raw data ) */
 319     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 320     {
 321         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 322         goto error;
 323     }
 324
 325     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 326
 327     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 328     {
 329         switch( p_ftyp->data.p_ftyp->i_major_brand )
 330         {
 331             case( FOURCC_isom ):
 332                 msg_Dbg( p_demux,
 333                          "ISO Media file (isom) version %d.",
 334                          p_ftyp->data.p_ftyp->i_minor_version );
 335                 break;
 336             default:
 337                 msg_Dbg( p_demux,
 338                          "unrecognized major file specification (%4.4s).",
 339                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 340                 break;
 341         }
 342     }
 343     else
 344     {
 345         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 346     }
 347
 348     /* the file need to have one moov box */
 349     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 350     {
 351         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 352
 353         if( !p_foov )
 354         {
 355             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 356             goto error;
 357         }
 358         /* we have a free box as a moov, rename it */
 359         p_foov->i_type = FOURCC_moov;
 360     }
 361
 362     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 363     {
 364         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 365         int        i;
 366
 367         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 368
 369         input_thread_t *p_input = demux_GetParentInput( p_demux );
 370         input_item_t *p_current = input_GetItem( p_input );
 371
 372         input_item_node_t *p_subitems = input_item_node_Create( p_current );
 373
 374         for( i = 0; i < i_count; i++ )
 375         {
 376             MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 377             char      *psz_ref;
 378             uint32_t  i_ref_type;
 379
 380             if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
 381             {
 382                 continue;
 383             }
 384             i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 385
 386             msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 387                      psz_ref, (char*)&i_ref_type );
 388
 389             if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 390             {
 391                 if( strstr( psz_ref, "qt5gateQT" ) )
 392                 {
 393                     msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 394                     continue;
 395                 }
 396                 if( !strncmp( psz_ref, "http://", 7 ) ||
 397                     !strncmp( psz_ref, "rtsp://", 7 ) )
 398                 {
 399                     ;
 400                 }
 401                 else
 402                 {
 403                     char *psz_absolute;
 404                     char *psz_path = strdup( p_demux->psz_path );
 405                     char *end = strrchr( psz_path, '/' );
 406                     if( end ) end[1] = '\0';
 407                     else *psz_path = '\0';
 408
 409                     if( asprintf( &psz_absolute, "%s://%s%s",
 410                                   p_demux->psz_access, psz_path, psz_ref ) < 0 )
 411                     {
 412                         free( psz_ref );
 413                         free( psz_path );
 414                         vlc_object_release( p_input) ;
 415                         return VLC_ENOMEM;
 416                     }
 417
 418                     free( psz_ref );
 419                     psz_ref = psz_absolute;
 420                     free( psz_path );
 421                 }
 422                 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 423                 input_item_t *p_input = input_item_New( p_demux, psz_ref, NULL );
 424                 input_item_CopyOptions( p_current, p_input );
 425                 input_item_node_AppendItem( p_subitems, p_input );
 426                 vlc_gc_decref( p_input );
 427             }
 428             else
 429             {
 430                 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 431                          (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 432             }
 433             free( psz_ref );
 434         }
 435         input_item_node_PostAndDelete( p_subitems );
 436         vlc_object_release( p_input );
 437     }
 438
 439     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 440     {
 441         if( !p_rmra )
 442         {
 443             msg_Err( p_demux, "cannot find /moov/mvhd" );
 444             goto error;
 445         }
 446         else
 447         {
 448             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 449             p_demux->pf_demux = DemuxRef;
 450             return VLC_SUCCESS;
 451         }
 452     }
 453     else
 454     {
 455         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 456         if( p_sys->i_timescale == 0 )
 457         {
 458             msg_Err( p_this, "bad timescale" );
 459             goto error;
 460         }
 461         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 462     }
 463
 464     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 465     {
 466         msg_Err( p_demux, "cannot find any /moov/trak" );
 467         goto error;
 468     }
 469     msg_Dbg( p_demux, "found %d track%c",
 470                         p_sys->i_tracks,
 471                         p_sys->i_tracks ? 's':' ' );
 472
 473     /* allocate memory */
 474     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 475     if( p_sys->track == NULL )
 476         goto error;
 477     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 478
 479     /* Search the first chap reference (like quicktime) and
 480      * check that at least 1 stream is enabled */
 481     p_sys->p_tref_chap = NULL;
 482     b_enabled_es = false;
 483     for( i = 0; i < p_sys->i_tracks; i++ )
 484     {
 485         MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 486
 487
 488         MP4_Box_t *p_tkhd = MP4_BoxGet( p_trak, "tkhd" );
 489         if( p_tkhd && (p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED) )
 490             b_enabled_es = true;
 491
 492         MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
 493         if( p_chap && p_chap->data.p_tref_generic->i_entry_count > 0 && !p_sys->p_tref_chap )
 494             p_sys->p_tref_chap = p_chap;
 495     }
 496
 497     /* now process each track and extract all usefull information */
 498     for( i = 0; i < p_sys->i_tracks; i++ )
 499     {
 500         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 501         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak, !b_enabled_es );
 502
 503         if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
 504         {
 505             const char *psz_cat;
 506             switch( p_sys->track[i].fmt.i_cat )
 507             {
 508                 case( VIDEO_ES ):
 509                     psz_cat = "video";
 510                     break;
 511                 case( AUDIO_ES ):
 512                     psz_cat = "audio";
 513                     break;
 514                 case( SPU_ES ):
 515                     psz_cat = "subtitle";
 516                     break;
 517
 518                 default:
 519                     psz_cat = "unknown";
 520                     break;
 521             }
 522
 523             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 524                      p_sys->track[i].i_track_ID, psz_cat,
 525                      p_sys->track[i].b_enable ? "enable":"disable",
 526                      p_sys->track[i].fmt.psz_language ?
 527                      p_sys->track[i].fmt.psz_language : "undef" );
 528         }
 529         else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
 530         {
 531             msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
 532                      p_sys->track[i].i_track_ID,
 533                      p_sys->track[i].fmt.psz_language ?
 534                      p_sys->track[i].fmt.psz_language : "undef" );
 535         }
 536         else
 537         {
 538             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 539                      p_sys->track[i].i_track_ID );
 540         }
 541     }
 542
 543     /* */
 544     LoadChapter( p_demux );
 545
 546     return VLC_SUCCESS;
 547
 548 error:
 549     if( p_sys->p_root )
 550     {
 551         MP4_BoxFree( p_demux->s, p_sys->p_root );
 552     }
 553     free( p_sys );
 554     return VLC_EGENERIC;
 555 }
 556
 557 /*****************************************************************************
 558  * Demux: read packet and send them to decoders
 559  *****************************************************************************
 560  * TODO check for newly selected track (ie audio upt to now )
 561  *****************************************************************************/
 562 static int Demux( demux_t *p_demux )
 563 {
 564     demux_sys_t *p_sys = p_demux->p_sys;
 565     unsigned int i_track;
 566
 567
 568     unsigned int i_track_selected;
 569
 570     /* check for newly selected/unselected track */
 571     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 572          i_track++ )
 573     {
 574         mp4_track_t *tk = &p_sys->track[i_track];
 575         bool b;
 576
 577         if( !tk->b_ok || tk->b_chapter ||
 578             ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
 579         {
 580             continue;
 581         }
 582
 583         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 584
 585         if( tk->b_selected && !b )
 586         {
 587             MP4_TrackUnselect( p_demux, tk );
 588         }
 589         else if( !tk->b_selected && b)
 590         {
 591             MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 592         }
 593
 594         if( tk->b_selected )
 595         {
 596             i_track_selected++;
 597         }
 598     }
 599
 600     if( i_track_selected <= 0 )
 601     {
 602         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 603         if( p_sys->i_timescale > 0 )
 604         {
 605             int64_t i_length = (mtime_t)1000000 *
 606                                (mtime_t)p_sys->i_duration /
 607                                (mtime_t)p_sys->i_timescale;
 608             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 609                 return 0;
 610             return 1;
 611         }
 612
 613         msg_Warn( p_demux, "no track selected, exiting..." );
 614         return 0;
 615     }
 616
 617     /* */
 618     MP4_UpdateSeekpoint( p_demux );
 619
 620     /* first wait for the good time to read a packet */
 621     es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
 622
 623     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 624
 625     /* we will read 100ms for each stream so ...*/
 626     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 627
 628     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 629     {
 630         mp4_track_t *tk = &p_sys->track[i_track];
 631
 632         if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
 633             continue;
 634
 635         while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 636         {
 637 #if 0
 638             msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
 639                      MP4_TrackGetDTS( p_demux, tk ),
 640                      MP4_GetMoviePTS( p_sys ) );
 641 #endif
 642
 643             if( MP4_TrackSampleSize( tk ) > 0 )
 644             {
 645                 block_t *p_block;
 646                 int64_t i_delta;
 647
 648                 /* go,go go ! */
 649                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 650                 {
 651                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 652                               tk->i_track_ID );
 653                     MP4_TrackUnselect( p_demux, tk );
 654                     break;
 655                 }
 656
 657                 /* now read pes */
 658                 if( !(p_block =
 659                          stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
 660                 {
 661                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 662                               tk->i_track_ID );
 663                     MP4_TrackUnselect( p_demux, tk );
 664                     break;
 665                 }
 666
 667                 if( tk->b_drms && tk->p_drms )
 668                 {
 669                     if( tk->p_skcr )
 670                     {
 671                         uint32_t p_key[4];
 672                         drms_get_p_key( tk->p_drms, p_key );
 673
 674                         for( size_t i_pos = tk->p_skcr->data.p_skcr->i_init; i_pos < p_block->i_buffer; )
 675                         {
 676                             int n = __MIN( tk->p_skcr->data.p_skcr->i_encr, p_block->i_buffer - i_pos );
 677                             drms_decrypt( tk->p_drms, (uint32_t*)&p_block->p_buffer[i_pos], n, p_key );
 678                             i_pos += n;
 679                             i_pos += __MIN( tk->p_skcr->data.p_skcr->i_decr, p_block->i_buffer - i_pos );
 680                         }
 681                     }
 682                     else
 683                     {
 684                         drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
 685                                       p_block->i_buffer, NULL );
 686                     }
 687                 }
 688                 else if( tk->fmt.i_cat == SPU_ES )
 689                 {
 690                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
 691                         p_block->i_buffer >= 2 )
 692                     {
 693                         uint16_t i_size = GetWBE( p_block->p_buffer );
 694
 695                         if( i_size + 2 <= p_block->i_buffer )
 696                         {
 697                             char *p;
 698                             /* remove the length field, and append a '\0' */
 699                             memmove( &p_block->p_buffer[0],
 700                                      &p_block->p_buffer[2], i_size );
 701                             p_block->p_buffer[i_size] = '\0';
 702                             p_block->i_buffer = i_size + 1;
 703
 704                             /* convert \r -> \n */
 705                             while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
 706                             {
 707                                 *p = '\n';
 708                             }
 709                         }
 710                         else
 711                         {
 712                             /* Invalid */
 713                             p_block->i_buffer = 0;
 714                         }
 715                     }
 716                 }
 717                 /* dts */
 718                 p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
 719                 /* pts */
 720                 i_delta = MP4_TrackGetPTSDelta( tk );
 721                 if( i_delta != -1 )
 722                     p_block->i_pts = p_block->i_dts + i_delta;
 723                 else if( tk->fmt.i_cat != VIDEO_ES )
 724                     p_block->i_pts = p_block->i_dts;
 725                 else
 726                     p_block->i_pts = VLC_TS_INVALID;
 727
 728                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 729                     es_out_Send( p_demux->out, tk->p_es, p_block );
 730             }
 731
 732             /* Next sample */
 733             if( MP4_TrackNextSample( p_demux, tk ) )
 734                 break;
 735         }
 736     }
 737
 738     return 1;
 739 }
 740
 741 static void MP4_UpdateSeekpoint( demux_t *p_demux )
 742 {
 743     demux_sys_t *p_sys = p_demux->p_sys;
 744     int64_t i_time;
 745     int i;
 746     if( !p_sys->p_title )
 747         return;
 748     i_time = MP4_GetMoviePTS( p_sys );
 749     for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
 750     {
 751         if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
 752             break;
 753     }
 754     i--;
 755
 756     if( i != p_demux->info.i_seekpoint && i >= 0 )
 757     {
 758         p_demux->info.i_seekpoint = i;
 759         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
 760     }
 761 }
 762 /*****************************************************************************
 763  * Seek: Go to i_date
 764 ******************************************************************************/
 765 static int Seek( demux_t *p_demux, mtime_t i_date )
 766 {
 767     demux_sys_t *p_sys = p_demux->p_sys;
 768     unsigned int i_track;
 769
 770     /* First update update global time */
 771     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 772     p_sys->i_pcr  = i_date;
 773
 774     /* Now for each stream try to go to this time */
 775     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 776     {
 777         mp4_track_t *tk = &p_sys->track[i_track];
 778         MP4_TrackSeek( p_demux, tk, i_date );
 779     }
 780     MP4_UpdateSeekpoint( p_demux );
 781
 782     es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
 783
 784     return VLC_SUCCESS;
 785 }
 786
 787 /*****************************************************************************
 788  * Control:
 789  *****************************************************************************/
 790 static int Control( demux_t *p_demux, int i_query, va_list args )
 791 {
 792     demux_sys_t *p_sys = p_demux->p_sys;
 793
 794     double f, *pf;
 795     int64_t i64, *pi64;
 796
 797     switch( i_query )
 798     {
 799         case DEMUX_GET_POSITION:
 800             pf = (double*)va_arg( args, double * );
 801             if( p_sys->i_duration > 0 )
 802             {
 803                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 804             }
 805             else
 806             {
 807                 *pf = 0.0;
 808             }
 809             return VLC_SUCCESS;
 810
 811         case DEMUX_SET_POSITION:
 812             f = (double)va_arg( args, double );
 813             if( p_sys->i_timescale > 0 )
 814             {
 815                 i64 = (int64_t)( f * (double)1000000 *
 816                                  (double)p_sys->i_duration /
 817                                  (double)p_sys->i_timescale );
 818                 return Seek( p_demux, i64 );
 819             }
 820             else return VLC_SUCCESS;
 821
 822         case DEMUX_GET_TIME:
 823             pi64 = (int64_t*)va_arg( args, int64_t * );
 824             if( p_sys->i_timescale > 0 )
 825             {
 826                 *pi64 = (mtime_t)1000000 *
 827                         (mtime_t)p_sys->i_time /
 828                         (mtime_t)p_sys->i_timescale;
 829             }
 830             else *pi64 = 0;
 831             return VLC_SUCCESS;
 832
 833         case DEMUX_SET_TIME:
 834             i64 = (int64_t)va_arg( args, int64_t );
 835             return Seek( p_demux, i64 );
 836
 837         case DEMUX_GET_LENGTH:
 838             pi64 = (int64_t*)va_arg( args, int64_t * );
 839             if( p_sys->i_timescale > 0 )
 840             {
 841                 *pi64 = (mtime_t)1000000 *
 842                         (mtime_t)p_sys->i_duration /
 843                         (mtime_t)p_sys->i_timescale;
 844             }
 845             else *pi64 = 0;
 846             return VLC_SUCCESS;
 847
 848         case DEMUX_GET_FPS:
 849             pf = (double*)va_arg( args, double* );
 850             *pf = p_sys->f_fps;
 851             return VLC_SUCCESS;
 852
 853         case DEMUX_GET_META:
 854         {
 855             vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
 856             MP4_Box_t  *p_0xa9xxx;
 857
 858             MP4_Box_t  *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
 859             if( p_udta == NULL )
 860             {
 861                 p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 862                 if( p_udta == NULL )
 863                 {
 864                     return VLC_EGENERIC;
 865                 }
 866             }
 867
 868             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 869                  p_0xa9xxx = p_0xa9xxx->p_next )
 870             {
 871
 872                 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
 873                     continue;
 874
 875                 /* FIXME FIXME: should convert from whatever the character
 876                  * encoding of MP4 meta data is to UTF-8. */
 877 #define SET(fct) do { char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" ); \
 878     if( psz_utf ) { EnsureUTF8( psz_utf );  \
 879                     fct( p_meta, psz_utf ); free( psz_utf ); } } while(0)
 880
 881                 /* XXX Becarefull p_udta can have box that are not 0xa9xx */
 882                 switch( p_0xa9xxx->i_type )
 883                 {
 884                 case FOURCC_0xa9nam: /* Full name */
 885                     SET( vlc_meta_SetTitle );
 886                     break;
 887                 case FOURCC_0xa9aut:
 888                     SET( vlc_meta_SetArtist );
 889                     break;
 890                 case FOURCC_0xa9ART:
 891                     SET( vlc_meta_SetArtist );
 892                     break;
 893                 case FOURCC_0xa9cpy:
 894                     SET( vlc_meta_SetCopyright );
 895                     break;
 896                 case FOURCC_0xa9day: /* Creation Date */
 897                     SET( vlc_meta_SetDate );
 898                     break;
 899                 case FOURCC_0xa9des: /* Description */
 900                     SET( vlc_meta_SetDescription );
 901                     break;
 902                 case FOURCC_0xa9gen: /* Genre */
 903                     SET( vlc_meta_SetGenre );
 904                     break;
 905
 906                 case FOURCC_0xa9alb: /* Album */
 907                     SET( vlc_meta_SetAlbum );
 908                     break;
 909
 910                 case FOURCC_0xa9trk: /* Track */
 911                     SET( vlc_meta_SetTrackNum );
 912                     break;
 913
 914                 case FOURCC_0xa9cmt: /* Commment */
 915                     SET( vlc_meta_SetDescription );
 916                     break;
 917
 918                 case FOURCC_0xa9url: /* URL */
 919                     SET( vlc_meta_SetURL );
 920                     break;
 921
 922                 case FOURCC_0xa9enc: /* Encoded By */
 923                     SET( vlc_meta_SetEncodedBy );
 924                     break;
 925
 926                 case FOURCC_0xa9swr:
 927                 case FOURCC_0xa9inf: /* Information */
 928                 case FOURCC_0xa9dir: /* Director */
 929                 case FOURCC_0xa9dis: /* Disclaimer */
 930                 case FOURCC_0xa9req: /* Requirements */
 931                 case FOURCC_0xa9fmt: /* Original Format */
 932                 case FOURCC_0xa9dsa: /* Display Source As */
 933                 case FOURCC_0xa9hst: /* Host Computer */
 934                 case FOURCC_0xa9prd: /* Producer */
 935                 case FOURCC_0xa9prf: /* Performers */
 936                 case FOURCC_0xa9ope: /* Original Performer */
 937                 case FOURCC_0xa9src: /* Providers Source Content */
 938                 case FOURCC_0xa9wrt: /* Writer */
 939                 case FOURCC_0xa9com: /* Composer */
 940                 case FOURCC_WLOC:    /* Window Location */
 941                     /* TODO one day, but they aren't really meaningfull */
 942                     break;
 943 #undef SET
 944
 945                 default:
 946                     break;
 947                 }
 948             }
 949             return VLC_SUCCESS;
 950         }
 951
 952         case DEMUX_GET_TITLE_INFO:
 953         {
 954             input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
 955             int *pi_int    = (int*)va_arg( args, int* );
 956             int *pi_title_offset = (int*)va_arg( args, int* );
 957             int *pi_seekpoint_offset = (int*)va_arg( args, int* );
 958
 959             if( !p_sys->p_title )
 960                 return VLC_EGENERIC;
 961
 962             *pi_int = 1;
 963             *ppp_title = malloc( sizeof( input_title_t**) );
 964             (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
 965             *pi_title_offset = 0;
 966             *pi_seekpoint_offset = 0;
 967             return VLC_SUCCESS;
 968         }
 969         case DEMUX_SET_TITLE:
 970         {
 971             const int i_title = (int)va_arg( args, int );
 972             if( !p_sys->p_title || i_title != 0 )
 973                 return VLC_EGENERIC;
 974             return VLC_SUCCESS;
 975         }
 976         case DEMUX_SET_SEEKPOINT:
 977         {
 978             const int i_seekpoint = (int)va_arg( args, int );
 979             if( !p_sys->p_title )
 980                 return VLC_EGENERIC;
 981             return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
 982         }
 983
 984         case DEMUX_SET_NEXT_DEMUX_TIME:
 985         case DEMUX_SET_GROUP:
 986         case DEMUX_HAS_UNSUPPORTED_META:
 987         case DEMUX_GET_ATTACHMENTS:
 988             return VLC_EGENERIC;
 989
 990         default:
 991             msg_Warn( p_demux, "control query %u unimplemented", i_query );
 992             return VLC_EGENERIC;
 993     }
 994 }
 995
 996 /*****************************************************************************
 997  * Close: frees unused data
 998  *****************************************************************************/
 999 static void Close ( vlc_object_t * p_this )
1000 {
1001     demux_t *  p_demux = (demux_t *)p_this;
1002     demux_sys_t *p_sys = p_demux->p_sys;
1003     unsigned int i_track;
1004
1005     msg_Dbg( p_demux, "freeing all memory" );
1006
1007     MP4_BoxFree( p_demux->s, p_sys->p_root );
1008     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1009     {
1010         MP4_TrackDestroy(  &p_sys->track[i_track] );
1011     }
1012     FREENULL( p_sys->track );
1013
1014     if( p_sys->p_title )
1015         vlc_input_title_Delete( p_sys->p_title );
1016
1017     free( p_sys );
1018 }
1019
1020
1021
1022 /****************************************************************************
1023  * Local functions, specific to vlc
1024  ****************************************************************************/
1025 /* Chapters */
1026 static void LoadChapterGpac( demux_t  *p_demux, MP4_Box_t *p_chpl )
1027 {
1028     demux_sys_t *p_sys = p_demux->p_sys;
1029     int i;
1030
1031     p_sys->p_title = vlc_input_title_New();
1032     for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
1033     {
1034         seekpoint_t *s = vlc_seekpoint_New();
1035
1036         s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
1037         EnsureUTF8( s->psz_name );
1038         s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
1039         TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1040     }
1041 }
1042 static void LoadChapterApple( demux_t  *p_demux, mp4_track_t *tk )
1043 {
1044     demux_sys_t *p_sys = p_demux->p_sys;
1045
1046     for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1047     {
1048         const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1049         const int64_t i_pts_delta = MP4_TrackGetPTSDelta( tk );
1050         const unsigned int i_size = MP4_TrackSampleSize( tk );
1051
1052         if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1053         {
1054             char p_buffer[256];
1055             const int i_read = stream_Read( p_demux->s, p_buffer, __MIN( sizeof(p_buffer), i_size ) );
1056             const int i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1057
1058             if( i_len > 0 )
1059             {
1060                 seekpoint_t *s = vlc_seekpoint_New();
1061
1062                 s->psz_name = strndup( &p_buffer[2], i_len );
1063                 EnsureUTF8( s->psz_name );
1064
1065                 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1066
1067                 if( !p_sys->p_title )
1068                     p_sys->p_title = vlc_input_title_New();
1069                 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1070             }
1071         }
1072         if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1073                               tk->chunk[tk->i_chunk].i_sample_count )
1074             tk->i_chunk++;
1075     }
1076 }
1077 static void LoadChapter( demux_t  *p_demux )
1078 {
1079     demux_sys_t *p_sys = p_demux->p_sys;
1080     MP4_Box_t *p_chpl;
1081
1082     if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
1083     {
1084         LoadChapterGpac( p_demux, p_chpl );
1085     }
1086     else if( p_sys->p_tref_chap )
1087     {
1088         MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1089         unsigned int i, j;
1090
1091         /* Load the first subtitle track like quicktime */
1092         for( i = 0; i < p_chap->i_entry_count; i++ )
1093         {
1094             for( j = 0; j < p_sys->i_tracks; j++ )
1095             {
1096                 mp4_track_t *tk = &p_sys->track[j];
1097                 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1098                     tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
1099                     break;
1100             }
1101             if( j < p_sys->i_tracks )
1102             {
1103                 LoadChapterApple( p_demux, &p_sys->track[j] );
1104                 break;
1105             }
1106         }
1107     }
1108 }
1109
1110 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1111 static int TrackCreateChunksIndex( demux_t *p_demux,
1112                                    mp4_track_t *p_demux_track )
1113 {
1114     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1115     MP4_Box_t *p_stsc;
1116
1117     unsigned int i_chunk;
1118     unsigned int i_index, i_last;
1119
1120     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1121           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1122         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1123     {
1124         return( VLC_EGENERIC );
1125     }
1126
1127     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
1128     if( !p_demux_track->i_chunk_count )
1129     {
1130         msg_Warn( p_demux, "no chunk defined" );
1131         return( VLC_EGENERIC );
1132     }
1133     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1134                                    sizeof( mp4_chunk_t ) );
1135     if( p_demux_track->chunk == NULL )
1136     {
1137         return VLC_ENOMEM;
1138     }
1139
1140     /* first we read chunk offset */
1141     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1142     {
1143         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1144
1145         ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
1146
1147         ck->i_first_dts = 0;
1148         ck->p_sample_count_dts = NULL;
1149         ck->p_sample_delta_dts = NULL;
1150         ck->p_sample_count_pts = NULL;
1151         ck->p_sample_offset_pts = NULL;
1152     }
1153
1154     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1155         to be used for the sample XXX begin to 1
1156         We construct it begining at the end */
1157     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1158     i_index = p_stsc->data.p_stsc->i_entry_count;
1159     if( !i_index )
1160     {
1161         msg_Warn( p_demux, "cannot read chunk table or table empty" );
1162         return( VLC_EGENERIC );
1163     }
1164
1165     while( i_index-- )
1166     {
1167         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1168              i_chunk < i_last; i_chunk++ )
1169         {
1170             if( i_chunk >= p_demux_track->i_chunk_count )
1171             {
1172                 msg_Warn( p_demux, "corrupted chunk table" );
1173                 return VLC_EGENERIC;
1174             }
1175
1176             p_demux_track->chunk[i_chunk].i_sample_description_index =
1177                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
1178             p_demux_track->chunk[i_chunk].i_sample_count =
1179                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
1180         }
1181         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1182     }
1183
1184     p_demux_track->chunk[0].i_sample_first = 0;
1185     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1186     {
1187         p_demux_track->chunk[i_chunk].i_sample_first =
1188             p_demux_track->chunk[i_chunk-1].i_sample_first +
1189                 p_demux_track->chunk[i_chunk-1].i_sample_count;
1190     }
1191
1192     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1193              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1194
1195     return VLC_SUCCESS;
1196 }
1197
1198 static int TrackCreateSamplesIndex( demux_t *p_demux,
1199                                     mp4_track_t *p_demux_track )
1200 {
1201     MP4_Box_t *p_box;
1202     MP4_Box_data_stsz_t *stsz;
1203     MP4_Box_data_stts_t *stts;
1204     /* TODO use also stss and stsh table for seeking */
1205     /* FIXME use edit table */
1206     int64_t i_sample;
1207     int64_t i_chunk;
1208
1209     int64_t i_index;
1210     int64_t i_index_sample_used;
1211
1212     int64_t i_next_dts;
1213
1214     /* Find stsz
1215      *  Gives the sample size for each samples. There is also a stz2 table
1216      *  (compressed form) that we need to implement TODO */
1217     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1218     if( !p_box )
1219     {
1220         /* FIXME and stz2 */
1221         msg_Warn( p_demux, "cannot find STSZ box" );
1222         return VLC_EGENERIC;
1223     }
1224     stsz = p_box->data.p_stsz;
1225
1226     /* Find stts
1227      *  Gives mapping between sample and decoding time
1228      */
1229     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1230     if( !p_box )
1231     {
1232         msg_Warn( p_demux, "cannot find STTS box" );
1233         return VLC_EGENERIC;
1234     }
1235     stts = p_box->data.p_stts;
1236
1237     /* Use stsz table to create a sample number -> sample size table */
1238     p_demux_track->i_sample_count = stsz->i_sample_count;
1239     if( stsz->i_sample_size )
1240     {
1241         /* 1: all sample have the same size, so no need to construct a table */
1242         p_demux_track->i_sample_size = stsz->i_sample_size;
1243         p_demux_track->p_sample_size = NULL;
1244     }
1245     else
1246     {
1247         /* 2: each sample can have a different size */
1248         p_demux_track->i_sample_size = 0;
1249         p_demux_track->p_sample_size =
1250             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1251         if( p_demux_track->p_sample_size == NULL )
1252             return VLC_ENOMEM;
1253
1254         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1255         {
1256             p_demux_track->p_sample_size[i_sample] =
1257                     stsz->i_entry_size[i_sample];
1258         }
1259     }
1260
1261     /* Use stts table to create a sample number -> dts table.
1262      * XXX: if we don't want to waste too much memory, we can't expand
1263      *  the box! so each chunk will contain an "extract" of this table
1264      *  for fast research (problem with raw stream where a sample is sometime
1265      *  just channels*bits_per_sample/8 */
1266
1267     i_next_dts = 0;
1268     i_index = 0; i_index_sample_used = 0;
1269     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1270     {
1271         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1272         int64_t i_entry, i_sample_count, i;
1273
1274         /* save first dts */
1275         ck->i_first_dts = i_next_dts;
1276         ck->i_last_dts  = i_next_dts;
1277
1278         /* count how many entries are needed for this chunk
1279          * for p_sample_delta_dts and p_sample_count_dts */
1280         i_sample_count = ck->i_sample_count;
1281
1282         i_entry = 0;
1283         while( i_sample_count > 0 )
1284         {
1285             i_sample_count -= stts->i_sample_count[i_index+i_entry];
1286             /* don't count already used sample in this entry */
1287             if( i_entry == 0 )
1288                 i_sample_count += i_index_sample_used;
1289
1290             i_entry++;
1291         }
1292
1293         /* allocate them */
1294         ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1295         ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1296
1297         if( !ck->p_sample_count_dts || !ck->p_sample_delta_dts )
1298             return VLC_ENOMEM;
1299
1300         /* now copy */
1301         i_sample_count = ck->i_sample_count;
1302         for( i = 0; i < i_entry; i++ )
1303         {
1304             int64_t i_used;
1305             int64_t i_rest;
1306
1307             i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1308
1309             i_used = __MIN( i_rest, i_sample_count );
1310
1311             i_index_sample_used += i_used;
1312             i_sample_count -= i_used;
1313             i_next_dts += i_used * stts->i_sample_delta[i_index];
1314
1315             ck->p_sample_count_dts[i] = i_used;
1316             ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1317             if( i_used > 0 )
1318                 ck->i_last_dts = i_next_dts - ck->p_sample_delta_dts[i];
1319
1320             if( i_index_sample_used >= stts->i_sample_count[i_index] )
1321             {
1322                 i_index++;
1323                 i_index_sample_used = 0;
1324             }
1325         }
1326     }
1327
1328     /* Find ctts
1329      *  Gives the delta between decoding time (dts) and composition table (pts)
1330      */
1331     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1332     if( p_box )
1333     {
1334         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1335
1336         msg_Warn( p_demux, "CTTS table" );
1337
1338         /* Create pts-dts table per chunk */
1339         i_index = 0; i_index_sample_used = 0;
1340         for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1341         {
1342             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1343             int64_t i_entry, i_sample_count, i;
1344
1345             /* count how many entries are needed for this chunk
1346              * for p_sample_delta_dts and p_sample_count_dts */
1347             i_sample_count = ck->i_sample_count;
1348
1349             i_entry = 0;
1350             while( i_sample_count > 0 )
1351             {
1352                 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1353
1354                 /* don't count already used sample in this entry */
1355                 if( i_entry == 0 )
1356                     i_sample_count += i_index_sample_used;
1357
1358                 i_entry++;
1359             }
1360
1361             /* allocate them */
1362             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1363             ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1364             if( !ck->p_sample_count_pts || !ck->p_sample_offset_pts )
1365                 return VLC_ENOMEM;
1366
1367             /* now copy */
1368             i_sample_count = ck->i_sample_count;
1369             for( i = 0; i < i_entry; i++ )
1370             {
1371                 int64_t i_used;
1372                 int64_t i_rest;
1373
1374                 i_rest = ctts->i_sample_count[i_index] -
1375                     i_index_sample_used;
1376
1377                 i_used = __MIN( i_rest, i_sample_count );
1378
1379                 i_index_sample_used += i_used;
1380                 i_sample_count -= i_used;
1381
1382                 ck->p_sample_count_pts[i] = i_used;
1383                 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1384
1385                 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1386                 {
1387                     i_index++;
1388                     i_index_sample_used = 0;
1389                 }
1390             }
1391         }
1392     }
1393
1394     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:%"PRId64"s",
1395              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1396              i_next_dts / p_demux_track->i_timescale );
1397
1398     return VLC_SUCCESS;
1399 }
1400
1401 /**
1402  * It computes the sample rate for a video track using the given sample
1403  * description index
1404  */
1405 static void TrackGetESSampleRate( unsigned *pi_num, unsigned *pi_den,
1406                                   const mp4_track_t *p_track,
1407                                   unsigned i_sd_index,
1408                                   unsigned i_chunk )
1409 {
1410     *pi_num = 0;
1411     *pi_den = 0;
1412
1413     if( p_track->i_chunk_count <= 0 )
1414         return;
1415
1416     /* */
1417     const mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
1418     while( p_chunk > &p_track->chunk[0] &&
1419            p_chunk[-1].i_sample_description_index == i_sd_index )
1420     {
1421         p_chunk--;
1422     }
1423
1424     uint64_t i_sample = 0;
1425     uint64_t i_first_dts = p_chunk->i_first_dts;
1426     uint64_t i_last_dts;
1427     do
1428     {
1429         i_sample += p_chunk->i_sample_count;
1430         i_last_dts = p_chunk->i_last_dts;
1431         p_chunk++;
1432     }
1433     while( p_chunk < &p_track->chunk[p_track->i_chunk_count] &&
1434            p_chunk->i_sample_description_index == i_sd_index );
1435
1436     if( i_sample > 1 && i_first_dts < i_last_dts )
1437         vlc_ureduce( pi_num, pi_den,
1438                      ( i_sample - 1) *  p_track->i_timescale,
1439                      i_last_dts - i_first_dts,
1440                      UINT16_MAX);
1441 }
1442
1443 /*
1444  * TrackCreateES:
1445  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1446  */
1447 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1448                           unsigned int i_chunk, es_out_id_t **pp_es )
1449 {
1450     const unsigned i_sample_description_index =
1451         p_track->chunk[i_chunk].i_sample_description_index;
1452     MP4_Box_t   *p_sample;
1453     MP4_Box_t   *p_esds;
1454     MP4_Box_t   *p_frma;
1455     MP4_Box_t   *p_enda;
1456
1457     if( pp_es )
1458         *pp_es = NULL;
1459
1460     if( !i_sample_description_index )
1461     {
1462         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1463                   p_track->i_track_ID );
1464         return VLC_EGENERIC;
1465     }
1466
1467     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1468                             i_sample_description_index - 1 );
1469
1470     if( !p_sample ||
1471         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1472     {
1473         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1474                   p_track->i_track_ID );
1475         return VLC_EGENERIC;
1476     }
1477
1478     p_track->p_sample = p_sample;
1479
1480     if( ( p_frma = MP4_BoxGet( p_track->p_sample, "sinf/frma" ) ) )
1481     {
1482         msg_Warn( p_demux, "Original Format Box: %4.4s", (char *)&p_frma->data.p_frma->i_type );
1483
1484         p_sample->i_type = p_frma->data.p_frma->i_type;
1485     }
1486
1487     p_enda = MP4_BoxGet( p_sample, "wave/enda" );
1488     if( !p_enda )
1489         p_enda = MP4_BoxGet( p_sample, "enda" );
1490
1491     if( p_track->fmt.i_cat == AUDIO_ES && ( p_track->i_sample_size == 1 || p_track->i_sample_size == 2 ) )
1492     {
1493         MP4_Box_data_sample_soun_t *p_soun;
1494
1495         p_soun = p_sample->data.p_sample_soun;
1496
1497         if( p_soun->i_qt_version == 0 )
1498         {
1499             switch( p_sample->i_type )
1500             {
1501                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1502                     p_soun->i_qt_version = 1;
1503                     p_soun->i_sample_per_packet = 64;
1504                     p_soun->i_bytes_per_packet  = 34;
1505                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1506                     p_soun->i_bytes_per_sample  = 2;
1507                     break;
1508                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1509                     p_soun->i_qt_version = 1;
1510                     p_soun->i_sample_per_packet = 6;
1511                     p_soun->i_bytes_per_packet  = 2;
1512                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1513                     p_soun->i_bytes_per_sample  = 2;
1514                     break;
1515                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1516                     p_soun->i_qt_version = 1;
1517                     p_soun->i_sample_per_packet = 12;
1518                     p_soun->i_bytes_per_packet  = 2;
1519                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1520                     p_soun->i_bytes_per_sample  = 2;
1521                     break;
1522                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1523                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1524                     p_soun->i_samplesize = 8;
1525                     break;
1526                 case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
1527                 case VLC_FOURCC( 'r', 'a', 'w', ' ' ):
1528                 case VLC_FOURCC( 't', 'w', 'o', 's' ):
1529                 case VLC_FOURCC( 's', 'o', 'w', 't' ):
1530                     /* What would be the fun if you could trust the .mov */
1531                     p_track->i_sample_size = ((p_soun->i_samplesize+7)/8) * p_soun->i_channelcount;
1532                     break;
1533                 default:
1534                     break;
1535             }
1536
1537         }
1538         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1539         {
1540             p_soun->i_qt_version = 0;
1541         }
1542     }
1543
1544     /* */
1545     switch( p_track->fmt.i_cat )
1546     {
1547     case VIDEO_ES:
1548         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1549         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1550         p_track->fmt.video.i_bits_per_pixel =
1551             p_sample->data.p_sample_vide->i_depth;
1552
1553         /* fall on display size */
1554         if( p_track->fmt.video.i_width <= 0 )
1555             p_track->fmt.video.i_width = p_track->i_width;
1556         if( p_track->fmt.video.i_height <= 0 )
1557             p_track->fmt.video.i_height = p_track->i_height;
1558
1559         /* Find out apect ratio from display size */
1560         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1561             /* Work-around buggy muxed files */
1562             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1563         {
1564             p_track->fmt.video.i_sar_num = p_track->i_width  * p_track->fmt.video.i_height;
1565             p_track->fmt.video.i_sar_den = p_track->i_height * p_track->fmt.video.i_width;
1566         }
1567
1568         /* Support for cropping (eg. in H263 files) */
1569         p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1570         p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1571
1572         /* Frame rate */
1573         TrackGetESSampleRate( &p_track->fmt.video.i_frame_rate,
1574                               &p_track->fmt.video.i_frame_rate_base,
1575                               p_track, i_sample_description_index, i_chunk );
1576         p_demux->p_sys->f_fps = (float)p_track->fmt.video.i_frame_rate /
1577                                 (float)p_track->fmt.video.i_frame_rate_base;
1578         break;
1579
1580     case AUDIO_ES:
1581         p_track->fmt.audio.i_channels =
1582             p_sample->data.p_sample_soun->i_channelcount;
1583         p_track->fmt.audio.i_rate =
1584             p_sample->data.p_sample_soun->i_sampleratehi;
1585         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1586             p_sample->data.p_sample_soun->i_sampleratehi *
1587                 p_sample->data.p_sample_soun->i_samplesize;
1588         p_track->fmt.audio.i_bitspersample =
1589             p_sample->data.p_sample_soun->i_samplesize;
1590
1591         if( p_track->i_sample_size != 0 &&
1592             p_sample->data.p_sample_soun->i_qt_version == 1 && p_sample->data.p_sample_soun->i_sample_per_packet <= 0 )
1593         {
1594             msg_Err( p_demux, "Invalid sample per packet value for qt_version 1" );
1595             return VLC_EGENERIC;
1596         }
1597         break;
1598
1599     default:
1600         break;
1601     }
1602
1603
1604     /* It's a little ugly but .. there are special cases */
1605     switch( p_sample->i_type )
1606     {
1607         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1608         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1609         {
1610             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1611             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1612             if( p_track->i_sample_size > 1 )
1613                 p_soun->i_qt_version = 0;
1614             break;
1615         }
1616         case( VLC_FOURCC( 'a', 'c', '-', '3' ) ):
1617         {
1618             MP4_Box_t *p_dac3_box = MP4_BoxGet(  p_sample, "dac3", 0 );
1619
1620             p_track->fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
1621             if( p_dac3_box )
1622             {
1623                 static const int pi_bitrate[] = {
1624                      32,  40,  48,  56,
1625                      64,  80,  96, 112,
1626                     128, 160, 192, 224,
1627                     256, 320, 384, 448,
1628                     512, 576, 640,
1629                 };
1630                 MP4_Box_data_dac3_t *p_dac3 = p_dac3_box->data.p_dac3;
1631                 p_track->fmt.audio.i_channels = 0;
1632                 p_track->fmt.i_bitrate = 0;
1633                 if( p_dac3->i_bitrate_code < sizeof(pi_bitrate)/sizeof(*pi_bitrate) )
1634                     p_track->fmt.i_bitrate = pi_bitrate[p_dac3->i_bitrate_code] * 1000;
1635                 p_track->fmt.audio.i_bitspersample = 0;
1636             }
1637             break;
1638         }
1639         case( VLC_FOURCC( 'e', 'c', '-', '3' ) ):
1640         {
1641             p_track->fmt.i_codec = VLC_FOURCC( 'e', 'a', 'c', '3' );
1642             break;
1643         }
1644
1645         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1646         case( VLC_FOURCC( 'N', 'O', 'N', 'E' ) ):
1647         {
1648             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1649
1650             if(p_soun && (p_soun->i_samplesize+7)/8 == 1 )
1651                 p_track->fmt.i_codec = VLC_FOURCC( 'u', '8', ' ', ' ' );
1652             else
1653                 p_track->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
1654
1655             /* Buggy files workaround */
1656             if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1657                 p_sample->data.p_sample_soun->i_sampleratehi) )
1658             {
1659                 MP4_Box_data_sample_soun_t *p_soun =
1660                     p_sample->data.p_sample_soun;
1661
1662                 msg_Warn( p_demux, "i_timescale (%"PRIu64") != i_sampleratehi "
1663                           "(%u), making both equal (report any problem).",
1664                           p_track->i_timescale, p_soun->i_sampleratehi );
1665
1666                 if( p_soun->i_sampleratehi )
1667                     p_track->i_timescale = p_soun->i_sampleratehi;
1668                 else
1669                     p_soun->i_sampleratehi = p_track->i_timescale;
1670             }
1671             break;
1672         }
1673
1674         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1675             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1676             break;
1677
1678         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1679         case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1680             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1681             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1682             /* FIXME UTF-8 doesn't work here ? */
1683             if( p_track->b_mac_encoding )
1684                 p_track->fmt.subs.psz_encoding = strdup( "MAC" );
1685             else
1686                 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1687             break;
1688
1689         case VLC_FOURCC('y','v','1','2'):
1690             p_track->fmt.i_codec = VLC_FOURCC('Y','V','1','2');
1691             break;
1692         case VLC_FOURCC('y','u','v','2'):
1693             p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
1694             break;
1695
1696         case VLC_FOURCC('i','n','2','4'):
1697             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1698                                     VLC_FOURCC('4','2','n','i') : VLC_FOURCC('i','n','2','4');
1699             break;
1700         case VLC_FOURCC('f','l','3','2'):
1701             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1702                                     VLC_CODEC_F32L : VLC_CODEC_F32B;
1703             break;
1704         case VLC_FOURCC('f','l','6','4'):
1705             p_track->fmt.i_codec = p_enda && p_enda->data.p_enda->i_little_endian == 1 ?
1706                                     VLC_CODEC_F64L : VLC_CODEC_F64B;
1707             break;
1708
1709         default:
1710             p_track->fmt.i_codec = p_sample->i_type;
1711             break;
1712     }
1713
1714     /* now see if esds is present and if so create a data packet
1715         with decoder_specific_info  */
1716 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1717     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1718           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1719         ( p_esds->data.p_esds )&&
1720         ( p_decconfig ) )
1721     {
1722         /* First update information based on i_objectTypeIndication */
1723         switch( p_decconfig->i_objectTypeIndication )
1724         {
1725             case( 0x20 ): /* MPEG4 VIDEO */
1726                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1727                 break;
1728             case( 0x40):
1729                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1730                 break;
1731             case( 0x60):
1732             case( 0x61):
1733             case( 0x62):
1734             case( 0x63):
1735             case( 0x64):
1736             case( 0x65): /* MPEG2 video */
1737                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1738                 break;
1739             /* Theses are MPEG2-AAC */
1740             case( 0x66): /* main profile */
1741             case( 0x67): /* Low complexity profile */
1742             case( 0x68): /* Scaleable Sampling rate profile */
1743                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1744                 break;
1745             /* true MPEG 2 audio */
1746             case( 0x69):
1747                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1748                 break;
1749             case( 0x6a): /* MPEG1 video */
1750                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1751                 break;
1752             case( 0x6b): /* MPEG1 audio */
1753                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1754                 break;
1755             case( 0x6c ): /* jpeg */
1756                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1757                 break;
1758             case( 0x6d ): /* png */
1759                 p_track->fmt.i_codec = VLC_FOURCC( 'p','n','g',' ' );
1760                 break;
1761             case( 0x6e ): /* jpeg200 */
1762                 p_track->fmt.i_codec = VLC_FOURCC( 'M','J','2','C' );
1763                 break;
1764             case( 0xa3 ): /* vc1 */
1765                 p_track->fmt.i_codec = VLC_FOURCC( 'W','V','C','1' );
1766                 break;
1767
1768             /* Private ID */
1769             case( 0xe0 ): /* NeroDigital: dvd subs */
1770                 if( p_track->fmt.i_cat == SPU_ES )
1771                 {
1772                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1773                     if( p_track->i_width > 0 )
1774                         p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1775                     if( p_track->i_height > 0 )
1776                         p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1777                     break;
1778                 }
1779             case( 0xe1 ): /* QCelp for 3gp */
1780                 if( p_track->fmt.i_cat == AUDIO_ES )
1781                 {
1782                     p_track->fmt.i_codec = VLC_FOURCC( 'Q','c','l','p' );
1783                 }
1784                 break;
1785
1786             /* Fallback */
1787             default:
1788                 /* Unknown entry, but don't touch i_fourcc */
1789                 msg_Warn( p_demux,
1790                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1791                           p_decconfig->i_objectTypeIndication,
1792                           p_track->i_track_ID );
1793                 break;
1794         }
1795         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1796         if( p_track->fmt.i_extra > 0 )
1797         {
1798             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1799             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1800                     p_track->fmt.i_extra );
1801         }
1802     }
1803     else
1804     {
1805         switch( p_sample->i_type )
1806         {
1807             /* qt decoder, send the complete chunk */
1808             case VLC_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
1809             case VLC_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
1810             case VLC_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
1811             case VLC_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
1812             case VLC_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
1813             case VLC_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
1814             case VLC_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
1815             case VLC_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
1816             case VLC_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
1817             case VLC_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
1818             case VLC_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
1819             case VLC_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
1820                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1821                 break;
1822             /* qt decoder, send the complete chunk */
1823             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1824             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1825             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1826             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1827             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1828                 p_track->fmt.i_extra =
1829                     p_sample->data.p_sample_vide->i_qt_image_description;
1830                 if( p_track->fmt.i_extra > 0 )
1831                 {
1832                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1833                     memcpy( p_track->fmt.p_extra,
1834                             p_sample->data.p_sample_vide->p_qt_image_description,
1835                             p_track->fmt.i_extra);
1836                 }
1837                 break;
1838             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1839             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1840             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1841             case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1842                 p_track->fmt.i_extra =
1843                     p_sample->data.p_sample_soun->i_qt_description;
1844                 if( p_track->fmt.i_extra > 0 )
1845                 {
1846                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1847                     memcpy( p_track->fmt.p_extra,
1848                             p_sample->data.p_sample_soun->p_qt_description,
1849                             p_track->fmt.i_extra);
1850                 }
1851                 break;
1852
1853             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1854             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1855             {
1856                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1857
1858                 if( p_avcC )
1859                 {
1860                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1861                     if( p_track->fmt.i_extra > 0 )
1862                     {
1863                         p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1864                         memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1865                                 p_track->fmt.i_extra );
1866                     }
1867                 }
1868                 else
1869                 {
1870                     msg_Err( p_demux, "missing avcC" );
1871                 }
1872                 break;
1873             }
1874
1875             case VLC_FOURCC('m','s',0x00,0x02):
1876             case VLC_FOURCC('m','s',0x00,0x11):
1877             case VLC_FOURCC('Q','c','l','p'):
1878                 p_track->fmt.audio.i_blockalign = p_sample->data.p_sample_soun->i_bytes_per_frame;
1879                 break;
1880
1881             default:
1882                 break;
1883         }
1884     }
1885
1886 #undef p_decconfig
1887
1888     if( pp_es )
1889         *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1890
1891     return VLC_SUCCESS;
1892 }
1893
1894 /* given a time it return sample/chunk
1895  * it also update elst field of the track
1896  */
1897 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1898                                    int64_t i_start, uint32_t *pi_chunk,
1899                                    uint32_t *pi_sample )
1900 {
1901     demux_sys_t *p_sys = p_demux->p_sys;
1902     MP4_Box_t   *p_box_stss;
1903     uint64_t     i_dts;
1904     unsigned int i_sample;
1905     unsigned int i_chunk;
1906     int          i_index;
1907
1908     /* FIXME see if it's needed to check p_track->i_chunk_count */
1909     if( p_track->i_chunk_count == 0 )
1910         return( VLC_EGENERIC );
1911
1912     /* handle elst (find the correct one) */
1913     MP4_TrackSetELST( p_demux, p_track, i_start );
1914     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1915     {
1916         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1917         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1918
1919         /* now calculate i_start for this elst */
1920         /* offset */
1921         i_start -= p_track->i_elst_time * INT64_C(1000000) / p_sys->i_timescale;
1922         if( i_start < 0 )
1923         {
1924             *pi_chunk = 0;
1925             *pi_sample= 0;
1926
1927             return VLC_SUCCESS;
1928         }
1929         /* to track time scale */
1930         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1931         /* add elst offset */
1932         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1933              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1934             elst->i_media_time[p_track->i_elst] > 0 )
1935         {
1936             i_start += elst->i_media_time[p_track->i_elst];
1937         }
1938
1939         msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
1940                  "ms (track)", p_track->i_elst,
1941                  i_mvt * 1000 / p_sys->i_timescale,
1942                  i_start * 1000 / p_track->i_timescale );
1943     }
1944     else
1945     {
1946         /* convert absolute time to in timescale unit */
1947         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1948     }
1949
1950     /* we start from sample 0/chunk 0, hope it won't take too much time */
1951     /* *** find good chunk *** */
1952     for( i_chunk = 0; ; i_chunk++ )
1953     {
1954         if( i_chunk + 1 >= p_track->i_chunk_count )
1955         {
1956             /* at the end and can't check if i_start in this chunk,
1957                it will be check while searching i_sample */
1958             i_chunk = p_track->i_chunk_count - 1;
1959             break;
1960         }
1961
1962         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1963             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1964         {
1965             break;
1966         }
1967     }
1968
1969     /* *** find sample in the chunk *** */
1970     i_sample = p_track->chunk[i_chunk].i_sample_first;
1971     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1972     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1973     {
1974         if( i_dts +
1975             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1976             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1977         {
1978             i_dts    +=
1979                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1980                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1981
1982             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1983             i_index++;
1984         }
1985         else
1986         {
1987             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1988             {
1989                 break;
1990             }
1991             i_sample += ( i_start - i_dts ) /
1992                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1993             break;
1994         }
1995     }
1996
1997     if( i_sample >= p_track->i_sample_count )
1998     {
1999         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
2000                   "(seeking too far) chunk=%d sample=%d",
2001                   p_track->i_track_ID, i_chunk, i_sample );
2002         return( VLC_EGENERIC );
2003     }
2004
2005
2006     /* *** Try to find nearest sync points *** */
2007     if( ( p_box_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
2008     {
2009         MP4_Box_data_stss_t *p_stss = p_box_stss->data.p_stss;
2010         msg_Dbg( p_demux, "track[Id 0x%x] using Sync Sample Box (stss)",
2011                  p_track->i_track_ID );
2012         for( unsigned i_index = 0; i_index < p_stss->i_entry_count; i_index++ )
2013         {
2014             if( i_index >= p_stss->i_entry_count - 1 ||
2015                 i_sample < p_stss->i_sample_number[i_index+1] )
2016             {
2017                 unsigned i_sync_sample = p_stss->i_sample_number[i_index];
2018                 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
2019                          i_sample, i_sync_sample );
2020
2021                 if( i_sync_sample <= i_sample )
2022                 {
2023                     while( i_chunk > 0 &&
2024                            i_sync_sample < p_track->chunk[i_chunk].i_sample_first )
2025                         i_chunk--;
2026                 }
2027                 else
2028                 {
2029                     while( i_chunk < p_track->i_chunk_count - 1 &&
2030                            i_sync_sample >= p_track->chunk[i_chunk].i_sample_first +
2031                                             p_track->chunk[i_chunk].i_sample_count )
2032                         i_chunk++;
2033                 }
2034                 i_sample = i_sync_sample;
2035                 break;
2036             }
2037         }
2038     }
2039     else
2040     {
2041         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
2042                  "Sample Box (stss)", p_track->i_track_ID );
2043     }
2044
2045     *pi_chunk  = i_chunk;
2046     *pi_sample = i_sample;
2047
2048     return VLC_SUCCESS;
2049 }
2050
2051 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
2052                                  unsigned int i_chunk, unsigned int i_sample )
2053 {
2054     bool b_reselect = false;
2055
2056     /* now see if actual es is ok */
2057     if( p_track->i_chunk >= p_track->i_chunk_count ||
2058         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
2059             p_track->chunk[i_chunk].i_sample_description_index )
2060     {
2061         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
2062                   p_track->i_track_ID );
2063
2064         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
2065                         p_track->p_es, &b_reselect );
2066
2067         es_out_Del( p_demux->out, p_track->p_es );
2068
2069         p_track->p_es = NULL;
2070
2071         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
2072         {
2073             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2074                      p_track->i_track_ID );
2075
2076             p_track->b_ok       = false;
2077             p_track->b_selected = false;
2078             return VLC_EGENERIC;
2079         }
2080     }
2081
2082     /* select again the new decoder */
2083     if( b_reselect )
2084     {
2085         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
2086     }
2087
2088     p_track->i_chunk    = i_chunk;
2089     p_track->i_sample   = i_sample;
2090
2091     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2092 }
2093
2094 /****************************************************************************
2095  * MP4_TrackCreate:
2096  ****************************************************************************
2097  * Parse track information and create all needed data to run a track
2098  * If it succeed b_ok is set to 1 else to 0
2099  ****************************************************************************/
2100 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
2101                              MP4_Box_t *p_box_trak,
2102                              bool b_force_enable )
2103 {
2104     demux_sys_t *p_sys = p_demux->p_sys;
2105
2106     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
2107     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
2108     MP4_Box_t *p_elst;
2109
2110     MP4_Box_t *p_mdhd;
2111     MP4_Box_t *p_udta;
2112     MP4_Box_t *p_hdlr;
2113
2114     MP4_Box_t *p_vmhd;
2115     MP4_Box_t *p_smhd;
2116
2117     MP4_Box_t *p_drms;
2118
2119     unsigned int i;
2120     char language[4];
2121
2122     /* hint track unsupported */
2123
2124     /* set default value (-> track unusable) */
2125     p_track->b_ok       = false;
2126     p_track->b_enable   = false;
2127     p_track->b_selected = false;
2128     p_track->b_chapter  = false;
2129     p_track->b_mac_encoding = false;
2130
2131     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
2132
2133     if( !p_tkhd )
2134     {
2135         return;
2136     }
2137
2138     /* do we launch this track by default ? */
2139     p_track->b_enable =
2140         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
2141     if( !p_track->b_enable )
2142         p_track->fmt.i_priority = -1;
2143
2144     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
2145     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
2146     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
2147
2148     if( p_tref )
2149     {
2150 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
2151     }
2152
2153     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
2154     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
2155
2156     if( ( !p_mdhd )||( !p_hdlr ) )
2157     {
2158         return;
2159     }
2160
2161     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
2162     if( !p_track->i_timescale )
2163         return;
2164
2165     if( p_mdhd->data.p_mdhd->i_language_code < 0x800 )
2166     {
2167         /* We can convert i_language_code into iso 639 code,
2168          * I won't */
2169         strcpy( language, MP4_ConvertMacCode( p_mdhd->data.p_mdhd->i_language_code ) );
2170         p_track->b_mac_encoding = true;
2171     }
2172     else
2173     {
2174         for( i = 0; i < 3; i++ )
2175             language[i] = p_mdhd->data.p_mdhd->i_language[i];
2176         language[3] = '\0';
2177     }
2178
2179     switch( p_hdlr->data.p_hdlr->i_handler_type )
2180     {
2181         case( FOURCC_soun ):
2182             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2183             {
2184                 return;
2185             }
2186             p_track->fmt.i_cat = AUDIO_ES;
2187             break;
2188
2189         case( FOURCC_vide ):
2190             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2191             {
2192                 return;
2193             }
2194             p_track->fmt.i_cat = VIDEO_ES;
2195             break;
2196
2197         case( FOURCC_text ):
2198         case( FOURCC_subp ):
2199         case( FOURCC_tx3g ):
2200         case( FOURCC_sbtl ):
2201             p_track->fmt.i_cat = SPU_ES;
2202             break;
2203
2204         default:
2205             return;
2206     }
2207
2208     p_track->i_elst = 0;
2209     p_track->i_elst_time = 0;
2210     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2211     {
2212         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
2213         unsigned int i;
2214
2215         msg_Warn( p_demux, "elst box found" );
2216         for( i = 0; i < elst->i_entry_count; i++ )
2217         {
2218             msg_Dbg( p_demux, "   - [%d] duration=%"PRId64"ms media time=%"PRId64
2219                      "ms) rate=%d.%d", i,
2220                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2221                      elst->i_media_time[i] >= 0 ?
2222                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2223                      INT64_C(-1),
2224                      elst->i_media_rate_integer[i],
2225                      elst->i_media_rate_fraction[i] );
2226         }
2227     }
2228
2229
2230 /*  TODO
2231     add support for:
2232     p_dinf = MP4_BoxGet( p_minf, "dinf" );
2233 */
2234     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2235         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2236     {
2237         return;
2238     }
2239
2240     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
2241     p_track->b_drms = p_drms != NULL;
2242     p_track->p_drms = p_track->b_drms ?
2243         p_drms->data.p_sample_soun->p_drms : NULL;
2244
2245     if ( !p_drms )
2246     {
2247         p_drms = MP4_BoxGet( p_track->p_stsd, "drmi" );
2248         p_track->b_drms = p_drms != NULL;
2249         p_track->p_drms = p_track->b_drms ?
2250             p_drms->data.p_sample_vide->p_drms : NULL;
2251     }
2252
2253     if( p_drms )
2254         p_track->p_skcr = MP4_BoxGet( p_drms, "sinf/skcr" );
2255
2256     /* Set language */
2257     if( *language && strcmp( language, "```" ) && strcmp( language, "und" ) )
2258     {
2259         p_track->fmt.psz_language = strdup( language );
2260     }
2261
2262     p_udta = MP4_BoxGet( p_box_trak, "udta" );
2263     if( p_udta )
2264     {
2265         MP4_Box_t *p_0xa9xxx;
2266         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
2267                  p_0xa9xxx = p_0xa9xxx->p_next )
2268         {
2269             switch( p_0xa9xxx->i_type )
2270             {
2271                 case FOURCC_0xa9nam:
2272                     p_track->fmt.psz_description =
2273                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
2274                     break;
2275             }
2276         }
2277     }
2278
2279     /* Create chunk index table and sample index table */
2280     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
2281         TrackCreateSamplesIndex( p_demux, p_track ) )
2282     {
2283         return; /* cannot create chunks index */
2284     }
2285
2286     p_track->i_chunk  = 0;
2287     p_track->i_sample = 0;
2288
2289     /* Mark chapter only track */
2290     if( p_sys->p_tref_chap )
2291     {
2292         MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2293         unsigned int i;
2294
2295         for( i = 0; i < p_chap->i_entry_count; i++ )
2296         {
2297             if( p_track->i_track_ID == p_chap->i_track_ID[i] )
2298             {
2299                 p_track->b_chapter = true;
2300                 p_track->b_enable = false;
2301                 break;
2302             }
2303         }
2304     }
2305
2306     /* now create es */
2307     if( b_force_enable &&
2308         ( p_track->fmt.i_cat == VIDEO_ES || p_track->fmt.i_cat == AUDIO_ES ) )
2309     {
2310         msg_Warn( p_demux, "Enabling track[Id 0x%x] (buggy file without enabled track)",
2311                   p_track->i_track_ID );
2312         p_track->b_enable = true;
2313         p_track->fmt.i_priority = 0;
2314     }
2315
2316     p_track->p_es = NULL;
2317     if( TrackCreateES( p_demux,
2318                        p_track, p_track->i_chunk,
2319                        p_track->b_chapter ? NULL : &p_track->p_es ) )
2320     {
2321         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2322                  p_track->i_track_ID );
2323         return;
2324     }
2325     p_track->b_ok = true;
2326 #if 0
2327     {
2328         int i;
2329         for( i = 0; i < p_track->i_chunk_count; i++ )
2330         {
2331             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2332                      i, p_track->chunk[i].i_sample_count,
2333                      p_track->chunk[i].i_first_dts );
2334
2335         }
2336     }
2337 #endif
2338 }
2339
2340 /****************************************************************************
2341  * MP4_TrackDestroy:
2342  ****************************************************************************
2343  * Destroy a track created by MP4_TrackCreate.
2344  ****************************************************************************/
2345 static void MP4_TrackDestroy( mp4_track_t *p_track )
2346 {
2347     unsigned int i_chunk;
2348
2349     p_track->b_ok = false;
2350     p_track->b_enable   = false;
2351     p_track->b_selected = false;
2352
2353     es_format_Clean( &p_track->fmt );
2354
2355     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2356     {
2357         if( p_track->chunk )
2358         {
2359            FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2360            FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2361
2362            FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2363            FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2364         }
2365     }
2366     FREENULL( p_track->chunk );
2367
2368     if( !p_track->i_sample_size )
2369     {
2370         FREENULL( p_track->p_sample_size );
2371     }
2372 }
2373
2374 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2375                             mtime_t i_start )
2376 {
2377     if( !p_track->b_ok || p_track->b_chapter )
2378     {
2379         return VLC_EGENERIC;
2380     }
2381
2382     if( p_track->b_selected )
2383     {
2384         msg_Warn( p_demux, "track[Id 0x%x] already selected",
2385                   p_track->i_track_ID );
2386         return VLC_SUCCESS;
2387     }
2388
2389     return MP4_TrackSeek( p_demux, p_track, i_start );
2390 }
2391
2392 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2393 {
2394     if( !p_track->b_ok || p_track->b_chapter )
2395     {
2396         return;
2397     }
2398
2399     if( !p_track->b_selected )
2400     {
2401         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2402                   p_track->i_track_ID );
2403         return;
2404     }
2405     if( p_track->p_es )
2406     {
2407         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2408                         p_track->p_es, false );
2409     }
2410
2411     p_track->b_selected = false;
2412 }
2413
2414 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2415                           mtime_t i_start )
2416 {
2417     uint32_t i_chunk;
2418     uint32_t i_sample;
2419
2420     if( !p_track->b_ok || p_track->b_chapter )
2421         return VLC_EGENERIC;
2422
2423     p_track->b_selected = false;
2424
2425     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2426                                 &i_chunk, &i_sample ) )
2427     {
2428         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2429                   p_track->i_track_ID );
2430         return VLC_EGENERIC;
2431     }
2432
2433     p_track->b_selected = true;
2434
2435     if( !TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) )
2436         p_track->b_selected = true;
2437
2438     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2439 }
2440
2441
2442 /*
2443  * 3 types: for audio
2444  *
2445  */
2446 #define QT_V0_MAX_SAMPLES 1024
2447 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2448 {
2449     int i_size;
2450     MP4_Box_data_sample_soun_t *p_soun;
2451
2452     if( p_track->i_sample_size == 0 )
2453     {
2454         /* most simple case */
2455         return p_track->p_sample_size[p_track->i_sample];
2456     }
2457     if( p_track->fmt.i_cat != AUDIO_ES )
2458     {
2459         return p_track->i_sample_size;
2460     }
2461
2462     p_soun = p_track->p_sample->data.p_sample_soun;
2463
2464     if( p_soun->i_qt_version == 1 )
2465     {
2466         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count;
2467         if( p_track->fmt.audio.i_blockalign > 1 )
2468             i_samples = p_soun->i_sample_per_packet;
2469
2470         i_size = i_samples / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2471     }
2472     else if( p_track->i_sample_size > 256 )
2473     {
2474         /* We do that so we don't read too much data
2475          * (in this case we are likely dealing with compressed data) */
2476         i_size = p_track->i_sample_size;
2477     }
2478     else
2479     {
2480         /* Read a bunch of samples at once */
2481         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2482             ( p_track->i_sample -
2483               p_track->chunk[p_track->i_chunk].i_sample_first );
2484
2485         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2486         i_size = i_samples * p_track->i_sample_size;
2487     }
2488
2489     //fprintf( stderr, "size=%d\n", i_size );
2490     return i_size;
2491 }
2492
2493 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2494 {
2495     unsigned int i_sample;
2496     uint64_t i_pos;
2497
2498     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2499
2500     if( p_track->i_sample_size )
2501     {
2502         MP4_Box_data_sample_soun_t *p_soun =
2503             p_track->p_sample->data.p_sample_soun;
2504
2505         if( p_soun->i_qt_version == 0 )
2506         {
2507             i_pos += ( p_track->i_sample -
2508                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
2509                      p_track->i_sample_size;
2510         }
2511         else
2512         {
2513             /* we read chunk by chunk unless a blockalign is requested */
2514             if( p_track->fmt.audio.i_blockalign > 1 )
2515                 i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) /
2516                                 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2517         }
2518     }
2519     else
2520     {
2521         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2522              i_sample < p_track->i_sample; i_sample++ )
2523         {
2524             i_pos += p_track->p_sample_size[i_sample];
2525         }
2526     }
2527
2528     return i_pos;
2529 }
2530
2531 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2532 {
2533     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2534     {
2535         MP4_Box_data_sample_soun_t *p_soun;
2536
2537         p_soun = p_track->p_sample->data.p_sample_soun;
2538
2539         if( p_soun->i_qt_version == 1 )
2540         {
2541             /* we read chunk by chunk unless a blockalign is requested */
2542             if( p_track->fmt.audio.i_blockalign > 1 )
2543                 p_track->i_sample += p_soun->i_sample_per_packet;
2544             else
2545                 p_track->i_sample += p_track->chunk[p_track->i_chunk].i_sample_count;
2546         }
2547         else if( p_track->i_sample_size > 256 )
2548         {
2549             /* We do that so we don't read too much data
2550              * (in this case we are likely dealing with compressed data) */
2551             p_track->i_sample += 1;
2552         }
2553         else
2554         {
2555             /* FIXME */
2556             p_track->i_sample += QT_V0_MAX_SAMPLES;
2557             if( p_track->i_sample >
2558                 p_track->chunk[p_track->i_chunk].i_sample_first +
2559                 p_track->chunk[p_track->i_chunk].i_sample_count )
2560             {
2561                 p_track->i_sample =
2562                     p_track->chunk[p_track->i_chunk].i_sample_first +
2563                     p_track->chunk[p_track->i_chunk].i_sample_count;
2564             }
2565         }
2566     }
2567     else
2568     {
2569         p_track->i_sample++;
2570     }
2571
2572     if( p_track->i_sample >= p_track->i_sample_count )
2573         return VLC_EGENERIC;
2574
2575     /* Have we changed chunk ? */
2576     if( p_track->i_sample >=
2577             p_track->chunk[p_track->i_chunk].i_sample_first +
2578             p_track->chunk[p_track->i_chunk].i_sample_count )
2579     {
2580         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2581                                   p_track->i_sample ) )
2582         {
2583             msg_Warn( p_demux, "track[0x%x] will be disabled "
2584                       "(cannot restart decoder)", p_track->i_track_ID );
2585             MP4_TrackUnselect( p_demux, p_track );
2586             return VLC_EGENERIC;
2587         }
2588     }
2589
2590     /* Have we changed elst */
2591     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2592     {
2593         demux_sys_t *p_sys = p_demux->p_sys;
2594         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2595         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2596                         p_sys->i_timescale / (int64_t)1000000;
2597
2598         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2599             i_mvt >= p_track->i_elst_time +
2600                      elst->i_segment_duration[p_track->i_elst] )
2601         {
2602             MP4_TrackSetELST( p_demux, p_track,
2603                               MP4_TrackGetDTS( p_demux, p_track ) );
2604         }
2605     }
2606
2607     return VLC_SUCCESS;
2608 }
2609
2610 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2611                               int64_t i_time )
2612 {
2613     demux_sys_t *p_sys = p_demux->p_sys;
2614     int         i_elst_last = tk->i_elst;
2615
2616     /* handle elst (find the correct one) */
2617     tk->i_elst      = 0;
2618     tk->i_elst_time = 0;
2619     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2620     {
2621         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2622         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2623
2624         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2625         {
2626             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2627
2628             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2629             {
2630                 break;
2631             }
2632             tk->i_elst_time += i_dur;
2633         }
2634
2635         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2636         {
2637             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2638             tk->i_elst = elst->i_entry_count - 1;
2639             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2640         }
2641
2642         if( elst->i_media_time[tk->i_elst] < 0 )
2643         {
2644             /* track offset */
2645             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2646         }
2647     }
2648     if( i_elst_last != tk->i_elst )
2649     {
2650         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2651     }
2652 }
2653
2654 /* */
2655 static const char *MP4_ConvertMacCode( uint16_t i_code )
2656 {
2657     static const struct { const char *psz_iso639_1; uint16_t i_code; } p_cvt[] = {
2658         { "en",   0 }, { "fr",   1 }, { "de",   2 }, { "it",   3 }, { "nl",   4 },
2659         { "sv",   5 }, { "es",   6 }, { "da",   7 }, { "pt",   8 }, { "no",   9 },
2660         { "he",  10 }, { "ja",  11 }, { "ar",  12 }, { "fi",  13 }, { "el",  14 },
2661         { "is",  15 }, { "mt",  16 }, { "tr",  17 }, { "hr",  18 }, { "zh",  19 },
2662         { "ur",  20 }, { "hi",  21 }, { "th",  22 }, { "ko",  23 }, { "lt",  24 },
2663         { "pl",  25 }, { "hu",  26 }, { "et",  27 }, { "lv",  28 }, //{ "??",  29 },
2664         { "fo",  30 }, { "fa",  31 }, { "ru",  32 }, { "zh",  33 }, { "nl",  34 },
2665         { "ga",  35 }, { "sq",  36 }, { "ro",  37 }, { "cs",  38 }, { "sk",  39 },
2666         { "sl",  40 }, { "yi",  41 }, { "sr",  42 }, { "mk",  43 }, { "bg",  44 },
2667         { "uk",  45 }, { "be",  46 }, { "uz",  47 }, { "az",  48 }, { "kk",  48 },
2668         { "az",  50 }, { "hy",  51 }, { "ka",  52 }, { "mo",  53 }, { "ky",  54 },
2669         { "tg",  55 }, { "tk",  56 }, { "mn",  57 }, { "mn",  58 }, { "ps",  59 },
2670         { "ku",  60 }, { "ks",  61 }, { "sd",  62 }, { "bo",  63 }, { "ne",  64 },
2671         { "sa",  65 }, { "mr",  66 }, { "bn",  67 }, { "as",  68 }, { "gu",  69 },
2672         { "pa",  70 }, { "or",  71 }, { "ml",  72 }, { "kn",  73 }, { "ta",  74 },
2673         { "te",  75 }, { "si",  76 }, { "my",  77 }, { "km",  78 }, { "lo",  79 },
2674         { "vi",  80 }, { "id",  81 }, { "tl",  82 }, { "ms",  83 }, { "ms",  84 },
2675         { "am",  85 }, { "ti",  86 }, { "om",  87 }, { "so",  88 }, { "sw",  89 },
2676         { "rw",  90 }, { "rn",  91 }, { "ny",  92 }, { "mg",  93 }, { "eo",  94 },
2677
2678                                                      { "cy", 128 }, { "eu", 129 },
2679         { "ca", 130 }, { "la", 131 }, { "qu", 132 }, { "gn", 133 }, { "ay", 134 },
2680         { "tt", 135 }, { "ug", 136 }, { "dz", 137 }, { "jv", 138 }, { "su", 139 },
2681         { "gl", 140 }, { "af", 141 }, { "br", 142 }, { "iu", 143 }, { "gd", 144 },
2682         { "gv", 145 }, { "ga", 146 }, { "to", 147 }, { "el", 148 },
2683         /* */
2684         { NULL, 0 }
2685     };
2686     int i;
2687     for( i = 0; p_cvt[i].psz_iso639_1 != NULL; i++ )
2688     {
2689         if( p_cvt[i].i_code == i_code )
2690             return p_cvt[i].psz_iso639_1;
2691     }
2692     return "";
2693 }