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 #include <vlc/vlc.h>
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>                                      /* malloc(), free() */
  31
  32 #include <vlc_demux.h>
  33 #include <vlc_playlist.h>
  34 #include <vlc_md5.h>
  35 #include <vlc_charset.h>
  36 #include "iso_lang.h"
  37 #include <vlc_meta.h>
  38
  39 #include "libmp4.h"
  40 #include "drms.h"
  41
  42 #ifdef UNDER_CE
  43 #define uint64_t int64_t
  44 #endif
  45
  46 /*****************************************************************************
  47  * Module descriptor
  48  *****************************************************************************/
  49 static int  Open ( vlc_object_t * );
  50 static void Close( vlc_object_t * );
  51
  52 vlc_module_begin();
  53     set_category( CAT_INPUT );
  54     set_subcategory( SUBCAT_INPUT_DEMUX );
  55     set_description( _("MP4 stream demuxer") );
  56     set_capability( "demux2", 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 ){ 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 to
  77         much memory and with fast acces */
  78
  79     /* with this we can calculate dts/pts without waste memory */
  80     uint64_t     i_first_dts;
  81     uint32_t     *p_sample_count_dts;
  82     uint32_t     *p_sample_delta_dts;   /* dts delta */
  83
  84     uint32_t     *p_sample_count_pts;
  85     int32_t      *p_sample_offset_pts;  /* pts-dts */
  86
  87     /* TODO if needed add pts
  88         but quickly *add* support for edts and seeking */
  89
  90 } mp4_chunk_t;
  91
  92  /* Contain all needed information for read all track with vlc */
  93 typedef struct
  94 {
  95     int i_track_ID;     /* this should be unique */
  96
  97     int b_ok;           /* The track is usable */
  98     int b_enable;       /* is the trak enable by default */
  99     vlc_bool_t b_selected;     /* is the trak being played */
 100
 101     es_format_t fmt;
 102     es_out_id_t *p_es;
 103
 104     /* display size only ! */
 105     int i_width;
 106     int i_height;
 107
 108     /* more internal data */
 109     uint64_t        i_timescale;    /* time scale for this track only */
 110
 111     /* elst */
 112     int             i_elst;         /* current elst */
 113     int64_t         i_elst_time;    /* current elst start time (in movie time scale)*/
 114     MP4_Box_t       *p_elst;        /* elst (could be NULL) */
 115
 116     /* give the next sample to read, i_chunk is to find quickly where
 117       the sample is located */
 118     uint32_t         i_sample;       /* next sample to read */
 119     uint32_t         i_chunk;        /* chunk where next sample is stored */
 120     /* total count of chunk and sample */
 121     uint32_t         i_chunk_count;
 122     uint32_t         i_sample_count;
 123
 124     mp4_chunk_t    *chunk; /* always defined  for each chunk */
 125
 126     /* sample size, p_sample_size defined only if i_sample_size == 0
 127         else i_sample_size is size for all sample */
 128     uint32_t         i_sample_size;
 129     uint32_t         *p_sample_size; /* XXX perhaps add file offset if take
 130                                     too much time to do sumations each time*/
 131
 132     MP4_Box_t *p_stbl;  /* will contain all timing information */
 133     MP4_Box_t *p_stsd;  /* will contain all data to initialize decoder */
 134     MP4_Box_t *p_sample;/* point on actual sdsd */
 135
 136     vlc_bool_t b_drms;
 137     void      *p_drms;
 138
 139 } mp4_track_t;
 140
 141
 142 struct demux_sys_t
 143 {
 144     MP4_Box_t    *p_root;      /* container for the whole file */
 145
 146     mtime_t      i_pcr;
 147
 148     uint64_t     i_time;        /* time position of the presentation
 149                                  * in movie timescale */
 150     uint64_t     i_timescale;   /* movie time scale */
 151     uint64_t     i_duration;    /* movie duration */
 152     unsigned int i_tracks;      /* number of tracks */
 153     mp4_track_t *track;    /* array of track */
 154 };
 155
 156 /*****************************************************************************
 157  * Declaration of local function
 158  *****************************************************************************/
 159 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 160 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 161
 162 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 163 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 164
 165 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 166
 167 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 168 static int      MP4_TrackSampleSize( mp4_track_t * );
 169 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 170 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 171
 172 /* Return time in s of a track */
 173 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 174 {
 175 #define chunk p_track->chunk[p_track->i_chunk]
 176
 177     unsigned int i_index = 0;
 178     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 179     int64_t i_dts = chunk.i_first_dts;
 180
 181     while( i_sample > 0 )
 182     {
 183         if( i_sample > chunk.p_sample_count_dts[i_index] )
 184         {
 185             i_dts += chunk.p_sample_count_dts[i_index] *
 186                 chunk.p_sample_delta_dts[i_index];
 187             i_sample -= chunk.p_sample_count_dts[i_index];
 188             i_index++;
 189         }
 190         else
 191         {
 192             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 193             i_sample = 0;
 194             break;
 195         }
 196     }
 197
 198 #undef chunk
 199
 200     /* now handle elst */
 201     if( p_track->p_elst )
 202     {
 203         demux_sys_t         *p_sys = p_demux->p_sys;
 204         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 205
 206         /* convert to offset */
 207         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 208               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 209             elst->i_media_time[p_track->i_elst] > 0 )
 210         {
 211             i_dts -= elst->i_media_time[p_track->i_elst];
 212         }
 213
 214         /* add i_elst_time */
 215         i_dts += p_track->i_elst_time * p_track->i_timescale /
 216             p_sys->i_timescale;
 217
 218         if( i_dts < 0 ) i_dts = 0;
 219     }
 220
 221     return I64C(1000000) * i_dts / p_track->i_timescale;
 222 }
 223
 224 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
 225 {
 226     mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
 227     unsigned int i_index = 0;
 228     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 229
 230     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 231         return -1;
 232
 233     for( i_index = 0;; i_index++ )
 234     {
 235         if( i_sample < ck->p_sample_count_pts[i_index] )
 236             return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
 237                    (int64_t)p_track->i_timescale;
 238
 239         i_sample -= ck->p_sample_count_pts[i_index];
 240     }
 241 }
 242
 243 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 244 {
 245     return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
 246 }
 247
 248 /* Function to lookup the currently playing item */
 249 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
 250                      playlist_item_t **pp_item );
 251
 252 /*****************************************************************************
 253  * Open: check file and initializes MP4 structures
 254  *****************************************************************************/
 255 static int Open( vlc_object_t * p_this )
 256 {
 257     demux_t  *p_demux = (demux_t *)p_this;
 258     demux_sys_t     *p_sys;
 259
 260     uint8_t         *p_peek;
 261
 262     MP4_Box_t       *p_ftyp;
 263     MP4_Box_t       *p_rmra;
 264     MP4_Box_t       *p_mvhd;
 265     MP4_Box_t       *p_trak;
 266
 267     unsigned int    i;
 268     vlc_bool_t      b_seekable;
 269
 270     /* A little test to see if it could be a mp4 */
 271     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
 272
 273     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 274     {
 275         case FOURCC_ftyp:
 276         case FOURCC_moov:
 277         case FOURCC_foov:
 278         case FOURCC_moof:
 279         case FOURCC_mdat:
 280         case FOURCC_udta:
 281         case FOURCC_free:
 282         case FOURCC_skip:
 283         case FOURCC_wide:
 284         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 285             break;
 286          default:
 287             return VLC_EGENERIC;
 288     }
 289
 290     /* I need to seek */
 291     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 292     if( !b_seekable )
 293     {
 294         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 295         return VLC_EGENERIC;
 296     }
 297
 298     /*Set exported functions */
 299     p_demux->pf_demux = Demux;
 300     p_demux->pf_control = Control;
 301
 302     /* create our structure that will contains all data */
 303     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 304     memset( p_sys, 0, sizeof( demux_sys_t ) );
 305
 306     /* Now load all boxes ( except raw data ) */
 307     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 308     {
 309         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 310         goto error;
 311     }
 312
 313     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 314
 315     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 316     {
 317         switch( p_ftyp->data.p_ftyp->i_major_brand )
 318         {
 319             case( FOURCC_isom ):
 320                 msg_Dbg( p_demux,
 321                          "ISO Media file (isom) version %d.",
 322                          p_ftyp->data.p_ftyp->i_minor_version );
 323                 break;
 324             default:
 325                 msg_Dbg( p_demux,
 326                          "unrecognized major file specification (%4.4s).",
 327                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 328                 break;
 329         }
 330     }
 331     else
 332     {
 333         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 334     }
 335
 336     /* the file need to have one moov box */
 337     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 338     {
 339         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 340
 341         if( !p_foov )
 342         {
 343             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 344             goto error;
 345         }
 346         /* we have a free box as a moov, rename it */
 347         p_foov->i_type = FOURCC_moov;
 348     }
 349
 350     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 351     {
 352         playlist_t *p_playlist;
 353         playlist_item_t *p_current, *p_item_in_category;
 354         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 355         int        i;
 356         vlc_bool_t b_play = VLC_FALSE;
 357
 358         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 359
 360         p_playlist =
 361             (playlist_t *)vlc_object_find( p_demux,
 362                                            VLC_OBJECT_PLAYLIST,
 363                                            FIND_ANYWHERE );
 364         if( p_playlist )
 365         {
 366             b_play = FindItem( p_demux, p_playlist, &p_current );
 367             p_item_in_category = playlist_ItemToNode( p_playlist, p_current, VLC_TRUE );
 368             p_current->p_input->i_type = ITEM_TYPE_PLAYLIST;
 369
 370             for( i = 0; i < i_count; i++ )
 371             {
 372                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 373                 char      *psz_ref;
 374                 uint32_t  i_ref_type;
 375
 376                 if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
 377                 {
 378                     continue;
 379                 }
 380                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 381
 382                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 383                          psz_ref, (char*)&i_ref_type );
 384
 385                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 386                 {
 387                     if( strstr( psz_ref, "qt5gateQT" ) )
 388                     {
 389                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 390                         continue;
 391                     }
 392                     if( !strncmp( psz_ref, "http://", 7 ) ||
 393                         !strncmp( psz_ref, "rtsp://", 7 ) )
 394                     {
 395                         ;
 396                     }
 397                     else
 398                     {
 399                         char *psz_absolute;
 400                         char *psz_path = strdup( p_demux->psz_path );
 401                         char *end = strrchr( psz_path, '/' );
 402                         if( end ) end[1] = '\0';
 403                         else *psz_path = '\0';
 404
 405                         asprintf( &psz_absolute, "%s://%s%s",
 406                                       p_demux->psz_access, psz_path, psz_ref );
 407
 408                         if( psz_ref ) free( psz_ref );
 409                         psz_ref = psz_absolute;
 410                         free( psz_path );
 411                     }
 412                     if( p_current )
 413                     {
 414                         input_item_t *p_input;
 415                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 416                         p_input = input_ItemNewExt( p_playlist, psz_ref, NULL,
 417                                             0, NULL, -1 );
 418                         input_ItemCopyOptions( p_current->p_input, p_input );
 419                         playlist_BothAddInput( p_playlist, p_input,
 420                                                p_item_in_category,
 421                                                PLAYLIST_APPEND, PLAYLIST_END,
 422                                                NULL, NULL, VLC_FALSE );
 423                     }
 424                 }
 425                 else
 426                 {
 427                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 428                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 429                 }
 430                 if( psz_ref ) free( psz_ref );
 431             }
 432             if( b_play && p_item_in_category &&
 433                 p_item_in_category->i_children > 0 )
 434             {
 435                 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, VLC_TRUE,
 436                                   p_item_in_category, NULL );
 437             }
 438             vlc_object_release( p_playlist );
 439         }
 440         else
 441         {
 442             msg_Err( p_demux, "can't find playlist" );
 443         }
 444     }
 445
 446     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 447     {
 448         if( !p_rmra )
 449         {
 450             msg_Err( p_demux, "cannot find /moov/mvhd" );
 451             goto error;
 452         }
 453         else
 454         {
 455             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 456             p_demux->pf_demux = DemuxRef;
 457             return VLC_SUCCESS;
 458         }
 459     }
 460     else
 461     {
 462         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 463         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 464     }
 465
 466     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 467     {
 468         msg_Err( p_demux, "cannot find any /moov/trak" );
 469         goto error;
 470     }
 471     msg_Dbg( p_demux, "find %d track%c",
 472                         p_sys->i_tracks,
 473                         p_sys->i_tracks ? 's':' ' );
 474
 475     /* allocate memory */
 476     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 477     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 478
 479     /* now process each track and extract all usefull information */
 480     for( i = 0; i < p_sys->i_tracks; i++ )
 481     {
 482         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 483         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 484
 485         if( p_sys->track[i].b_ok )
 486         {
 487             char *psz_cat;
 488             switch( p_sys->track[i].fmt.i_cat )
 489             {
 490                 case( VIDEO_ES ):
 491                     psz_cat = "video";
 492                     break;
 493                 case( AUDIO_ES ):
 494                     psz_cat = "audio";
 495                     break;
 496                 case( SPU_ES ):
 497                     psz_cat = "subtitle";
 498                     break;
 499
 500                 default:
 501                     psz_cat = "unknown";
 502                     break;
 503             }
 504
 505             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 506                      p_sys->track[i].i_track_ID, psz_cat,
 507                      p_sys->track[i].b_enable ? "enable":"disable",
 508                      p_sys->track[i].fmt.psz_language ?
 509                      p_sys->track[i].fmt.psz_language : "undef" );
 510         }
 511         else
 512         {
 513             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 514                      p_sys->track[i].i_track_ID );
 515         }
 516
 517     }
 518     return VLC_SUCCESS;
 519
 520 error:
 521     if( p_sys->p_root )
 522     {
 523         MP4_BoxFree( p_demux->s, p_sys->p_root );
 524     }
 525     free( p_sys );
 526     return VLC_EGENERIC;
 527 }
 528
 529 /*****************************************************************************
 530  * Demux: read packet and send them to decoders
 531  *****************************************************************************
 532  * TODO check for newly selected track (ie audio upt to now )
 533  *****************************************************************************/
 534 static int Demux( demux_t *p_demux )
 535 {
 536     demux_sys_t *p_sys = p_demux->p_sys;
 537     unsigned int i_track;
 538
 539
 540     unsigned int i_track_selected;
 541
 542     /* check for newly selected/unselected track */
 543     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 544          i_track++ )
 545     {
 546         mp4_track_t *tk = &p_sys->track[i_track];
 547         vlc_bool_t b;
 548
 549         if( !tk->b_ok ||
 550             ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
 551         {
 552             continue;
 553         }
 554
 555         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 556
 557         if( tk->b_selected && !b )
 558         {
 559             MP4_TrackUnselect( p_demux, tk );
 560         }
 561         else if( !tk->b_selected && b)
 562         {
 563             MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 564         }
 565
 566         if( tk->b_selected )
 567         {
 568             i_track_selected++;
 569         }
 570     }
 571
 572     if( i_track_selected <= 0 )
 573     {
 574         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 575         if( p_sys->i_timescale > 0 )
 576         {
 577             int64_t i_length = (mtime_t)1000000 *
 578                                (mtime_t)p_sys->i_duration /
 579                                (mtime_t)p_sys->i_timescale;
 580             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 581                 return 0;
 582             return 1;
 583         }
 584
 585         msg_Warn( p_demux, "no track selected, exiting..." );
 586         return 0;
 587     }
 588
 589     /* first wait for the good time to read a packet */
 590     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
 591
 592     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 593
 594     /* we will read 100ms for each stream so ...*/
 595     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 596
 597     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 598     {
 599         mp4_track_t *tk = &p_sys->track[i_track];
 600
 601         if( !tk->b_ok || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
 602         {
 603             continue;
 604         }
 605
 606         while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 607         {
 608 #if 0
 609             msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
 610                      MP4_TrackGetDTS( p_demux, tk ),
 611                      MP4_GetMoviePTS( p_sys ) );
 612 #endif
 613
 614             if( MP4_TrackSampleSize( tk ) > 0 )
 615             {
 616                 block_t *p_block;
 617                 int64_t i_delta;
 618
 619                 /* go,go go ! */
 620                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 621                 {
 622                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 623                               tk->i_track_ID );
 624                     MP4_TrackUnselect( p_demux, tk );
 625                     break;
 626                 }
 627
 628                 /* now read pes */
 629                 if( !(p_block =
 630                          stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
 631                 {
 632                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 633                               tk->i_track_ID );
 634                     MP4_TrackUnselect( p_demux, tk );
 635                     break;
 636                 }
 637
 638                 if( tk->b_drms && tk->p_drms )
 639                 {
 640                     drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
 641                                   p_block->i_buffer );
 642                 }
 643                 else if( tk->fmt.i_cat == SPU_ES )
 644                 {
 645                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
 646                         p_block->i_buffer >= 2 )
 647                     {
 648                         uint16_t i_size = GetWBE( p_block->p_buffer );
 649
 650                         if( i_size + 2 <= p_block->i_buffer )
 651                         {
 652                             char *p;
 653                             /* remove the length field, and append a '\0' */
 654                             memmove( &p_block->p_buffer[0],
 655                                      &p_block->p_buffer[2], i_size );
 656                             p_block->p_buffer[i_size] = '\0';
 657                             p_block->i_buffer = i_size + 1;
 658
 659                             /* convert \r -> \n */
 660                             while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
 661                             {
 662                                 *p = '\n';
 663                             }
 664                         }
 665                         else
 666                         {
 667                             /* Invalid */
 668                             p_block->i_buffer = 0;
 669                         }
 670                     }
 671                 }
 672                 /* dts */
 673                 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
 674                 /* pts */
 675                 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
 676                 if( i_delta != -1 )
 677                     p_block->i_pts = p_block->i_dts + i_delta;
 678                 else if( tk->fmt.i_cat != VIDEO_ES )
 679                     p_block->i_pts = p_block->i_dts;
 680                 else
 681                     p_block->i_pts = 0;
 682
 683                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 684                     es_out_Send( p_demux->out, tk->p_es, p_block );
 685             }
 686
 687             /* Next sample */
 688             if( MP4_TrackNextSample( p_demux, tk ) )
 689             {
 690                 break;
 691             }
 692         }
 693     }
 694
 695     return 1;
 696 }
 697 /*****************************************************************************
 698  * Seek: Got to i_date
 699 ******************************************************************************/
 700 static int Seek( demux_t *p_demux, mtime_t i_date )
 701 {
 702     demux_sys_t *p_sys = p_demux->p_sys;
 703     unsigned int i_track;
 704
 705     /* First update update global time */
 706     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 707     p_sys->i_pcr  = i_date;
 708
 709     /* Now for each stream try to go to this time */
 710     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 711     {
 712         mp4_track_t *tk = &p_sys->track[i_track];
 713         MP4_TrackSeek( p_demux, tk, i_date );
 714     }
 715     return VLC_SUCCESS;
 716 }
 717
 718 /*****************************************************************************
 719  * Control:
 720  *****************************************************************************/
 721 static int Control( demux_t *p_demux, int i_query, va_list args )
 722 {
 723     demux_sys_t *p_sys = p_demux->p_sys;
 724
 725     double f, *pf;
 726     int64_t i64, *pi64;
 727
 728     switch( i_query )
 729     {
 730         case DEMUX_GET_POSITION:
 731             pf = (double*)va_arg( args, double * );
 732             if( p_sys->i_duration > 0 )
 733             {
 734                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 735             }
 736             else
 737             {
 738                 *pf = 0.0;
 739             }
 740             return VLC_SUCCESS;
 741
 742         case DEMUX_SET_POSITION:
 743             f = (double)va_arg( args, double );
 744             if( p_sys->i_timescale > 0 )
 745             {
 746                 i64 = (int64_t)( f * (double)1000000 *
 747                                  (double)p_sys->i_duration /
 748                                  (double)p_sys->i_timescale );
 749                 return Seek( p_demux, i64 );
 750             }
 751             else return VLC_SUCCESS;
 752
 753         case DEMUX_GET_TIME:
 754             pi64 = (int64_t*)va_arg( args, int64_t * );
 755             if( p_sys->i_timescale > 0 )
 756             {
 757                 *pi64 = (mtime_t)1000000 *
 758                         (mtime_t)p_sys->i_time /
 759                         (mtime_t)p_sys->i_timescale;
 760             }
 761             else *pi64 = 0;
 762             return VLC_SUCCESS;
 763
 764         case DEMUX_SET_TIME:
 765             i64 = (int64_t)va_arg( args, int64_t );
 766             return Seek( p_demux, i64 );
 767
 768         case DEMUX_GET_LENGTH:
 769             pi64 = (int64_t*)va_arg( args, int64_t * );
 770             if( p_sys->i_timescale > 0 )
 771             {
 772                 *pi64 = (mtime_t)1000000 *
 773                         (mtime_t)p_sys->i_duration /
 774                         (mtime_t)p_sys->i_timescale;
 775             }
 776             else *pi64 = 0;
 777             return VLC_SUCCESS;
 778
 779         case DEMUX_GET_FPS:
 780             msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
 781             return VLC_EGENERIC;
 782
 783         case DEMUX_GET_META:
 784         {
 785             vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
 786             MP4_Box_t  *p_udta   = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 787             MP4_Box_t  *p_0xa9xxx;
 788             if( p_udta == NULL )
 789             {
 790                 return VLC_EGENERIC;
 791             }
 792             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 793                  p_0xa9xxx = p_0xa9xxx->p_next )
 794             {
 795                 char *psz_utf;
 796                 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
 797                     continue;
 798                 psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
 799                 if( psz_utf == NULL )
 800                     continue;
 801                 /* FIXME FIXME: should convert from whatever the character
 802                  * encoding of MP4 meta data is to UTF-8. */
 803                 EnsureUTF8( psz_utf );
 804
 805                 switch( p_0xa9xxx->i_type )
 806                 {
 807                 case FOURCC_0xa9nam: /* Full name */
 808                     vlc_meta_SetArtist( p_meta, psz_utf );
 809                     break;
 810                 case FOURCC_0xa9aut:
 811                     vlc_meta_SetArtist( p_meta, psz_utf );
 812                     break;
 813                 case FOURCC_0xa9ART:
 814                     vlc_meta_SetArtist( p_meta, psz_utf );
 815                     break;
 816                 case FOURCC_0xa9cpy:
 817                     vlc_meta_SetCopyright( p_meta, psz_utf );
 818                     break;
 819                 case FOURCC_0xa9day: /* Creation Date */
 820                     vlc_meta_SetDate( p_meta, psz_utf );
 821                     break;
 822                 case FOURCC_0xa9des: /* Description */
 823                     vlc_meta_SetDescription( p_meta, psz_utf );
 824                     break;
 825                 case FOURCC_0xa9gen: /* Genre */
 826                     vlc_meta_SetGenre( p_meta, psz_utf );
 827                     break;
 828
 829                 case FOURCC_0xa9swr:
 830                 case FOURCC_0xa9inf: /* Information */
 831                 case FOURCC_0xa9alb: /* Album */
 832                 case FOURCC_0xa9dir: /* Director */
 833                 case FOURCC_0xa9dis: /* Disclaimer */
 834                 case FOURCC_0xa9enc: /* Encoded By */
 835                 case FOURCC_0xa9trk: /* Track */
 836                 case FOURCC_0xa9cmt: /* Commment */
 837                 case FOURCC_0xa9url: /* URL */
 838                 case FOURCC_0xa9req: /* Requirements */
 839                 case FOURCC_0xa9fmt: /* Original Format */
 840                 case FOURCC_0xa9dsa: /* Display Source As */
 841                 case FOURCC_0xa9hst: /* Host Computer */
 842                 case FOURCC_0xa9prd: /* Producer */
 843                 case FOURCC_0xa9prf: /* Performers */
 844                 case FOURCC_0xa9ope: /* Original Performer */
 845                 case FOURCC_0xa9src: /* Providers Source Content */
 846                 case FOURCC_0xa9wrt: /* Writer */
 847                 case FOURCC_0xa9com: /* Composer */
 848                 case FOURCC_WLOC:    /* Window Location */
 849                     /* TODO one day, but they aren't really meaningfull */
 850                     break;
 851
 852                 default:
 853                     break;
 854                 }
 855                 free( psz_utf );
 856             }
 857             return VLC_SUCCESS;
 858         }
 859
 860         case DEMUX_GET_TITLE_INFO:
 861         case DEMUX_SET_NEXT_DEMUX_TIME:
 862         case DEMUX_SET_GROUP:
 863             return VLC_EGENERIC;
 864
 865         default:
 866             msg_Warn( p_demux, "control query %u unimplemented", i_query );
 867             return VLC_EGENERIC;
 868     }
 869 }
 870
 871 /*****************************************************************************
 872  * Close: frees unused data
 873  *****************************************************************************/
 874 static void Close ( vlc_object_t * p_this )
 875 {
 876     unsigned int i_track;
 877     demux_t *  p_demux = (demux_t *)p_this;
 878     demux_sys_t *p_sys = p_demux->p_sys;
 879
 880     msg_Dbg( p_demux, "freeing all memory" );
 881
 882     MP4_BoxFree( p_demux->s, p_sys->p_root );
 883     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 884     {
 885         MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
 886     }
 887     FREENULL( p_sys->track );
 888
 889     free( p_sys );
 890 }
 891
 892
 893
 894 /****************************************************************************
 895  * Local functions, specific to vlc
 896  ****************************************************************************/
 897
 898 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 899 static int TrackCreateChunksIndex( demux_t *p_demux,
 900                                    mp4_track_t *p_demux_track )
 901 {
 902     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 903     MP4_Box_t *p_stsc;
 904
 905     unsigned int i_chunk;
 906     unsigned int i_index, i_last;
 907
 908     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 909           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 910         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 911     {
 912         return( VLC_EGENERIC );
 913     }
 914
 915     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 916     if( !p_demux_track->i_chunk_count )
 917     {
 918         msg_Warn( p_demux, "no chunk defined" );
 919         return( VLC_EGENERIC );
 920     }
 921     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 922                                    sizeof( mp4_chunk_t ) );
 923
 924     /* first we read chunk offset */
 925     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 926     {
 927         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
 928
 929         ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
 930
 931         ck->i_first_dts = 0;
 932         ck->p_sample_count_dts = NULL;
 933         ck->p_sample_delta_dts = NULL;
 934         ck->p_sample_count_pts = NULL;
 935         ck->p_sample_offset_pts = NULL;
 936     }
 937
 938     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 939         to be used for the sample XXX begin to 1
 940         We construct it begining at the end */
 941     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 942     i_index = p_stsc->data.p_stsc->i_entry_count;
 943     if( !i_index )
 944     {
 945         msg_Warn( p_demux, "cannot read chunk table or table empty" );
 946         return( VLC_EGENERIC );
 947     }
 948
 949     while( i_index-- )
 950     {
 951         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 952              i_chunk < i_last; i_chunk++ )
 953         {
 954             p_demux_track->chunk[i_chunk].i_sample_description_index =
 955                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 956             p_demux_track->chunk[i_chunk].i_sample_count =
 957                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 958         }
 959         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 960     }
 961
 962     p_demux_track->chunk[0].i_sample_first = 0;
 963     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 964     {
 965         p_demux_track->chunk[i_chunk].i_sample_first =
 966             p_demux_track->chunk[i_chunk-1].i_sample_first +
 967                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 968     }
 969
 970     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
 971              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
 972
 973     return VLC_SUCCESS;
 974 }
 975
 976 static int TrackCreateSamplesIndex( demux_t *p_demux,
 977                                     mp4_track_t *p_demux_track )
 978 {
 979     MP4_Box_t *p_box;
 980     MP4_Box_data_stsz_t *stsz;
 981     MP4_Box_data_stts_t *stts;
 982     /* TODO use also stss and stsh table for seeking */
 983     /* FIXME use edit table */
 984     int64_t i_sample;
 985     int64_t i_chunk;
 986
 987     int64_t i_index;
 988     int64_t i_index_sample_used;
 989
 990     int64_t i_last_dts;
 991
 992     /* Find stsz
 993      *  Gives the sample size for each samples. There is also a stz2 table
 994      *  (compressed form) that we need to implement TODO */
 995     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
 996     if( !p_box )
 997     {
 998         /* FIXME and stz2 */
 999         msg_Warn( p_demux, "cannot find STSZ box" );
1000         return VLC_EGENERIC;
1001     }
1002     stsz = p_box->data.p_stsz;
1003
1004     /* Find stts
1005      *  Gives mapping between sample and decoding time
1006      */
1007     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1008     if( !p_box )
1009     {
1010         msg_Warn( p_demux, "cannot find STTS box" );
1011         return VLC_EGENERIC;
1012     }
1013     stts = p_box->data.p_stts;
1014
1015     /* Use stsz table to create a sample number -> sample size table */
1016     p_demux_track->i_sample_count = stsz->i_sample_count;
1017     if( stsz->i_sample_size )
1018     {
1019         /* 1: all sample have the same size, so no need to construct a table */
1020         p_demux_track->i_sample_size = stsz->i_sample_size;
1021         p_demux_track->p_sample_size = NULL;
1022     }
1023     else
1024     {
1025         /* 2: each sample can have a different size */
1026         p_demux_track->i_sample_size = 0;
1027         p_demux_track->p_sample_size =
1028             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1029
1030         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1031         {
1032             p_demux_track->p_sample_size[i_sample] =
1033                     stsz->i_entry_size[i_sample];
1034         }
1035     }
1036
1037     /* Use stts table to create a sample number -> dts table.
1038      * XXX: if we don't want to waste too much memory, we can't expand
1039      *  the box! so each chunk will contain an "extract" of this table
1040      *  for fast research (problem with raw stream where a sample is sometime
1041      *  just channels*bits_per_sample/8 */
1042
1043     i_last_dts = 0;
1044     i_index = 0; i_index_sample_used = 0;
1045     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1046     {
1047         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1048         int64_t i_entry, i_sample_count, i;
1049
1050         /* save last dts */
1051         ck->i_first_dts = i_last_dts;
1052
1053         /* count how many entries are needed for this chunk
1054          * for p_sample_delta_dts and p_sample_count_dts */
1055         i_sample_count = ck->i_sample_count;
1056
1057         i_entry = 0;
1058         while( i_sample_count > 0 )
1059         {
1060             i_sample_count -= stts->i_sample_count[i_index+i_entry];
1061             /* don't count already used sample in this entry */
1062             if( i_entry == 0 )
1063                 i_sample_count += i_index_sample_used;
1064
1065             i_entry++;
1066         }
1067
1068         /* allocate them */
1069         ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1070         ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1071
1072         /* now copy */
1073         i_sample_count = ck->i_sample_count;
1074         for( i = 0; i < i_entry; i++ )
1075         {
1076             int64_t i_used;
1077             int64_t i_rest;
1078
1079             i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1080
1081             i_used = __MIN( i_rest, i_sample_count );
1082
1083             i_index_sample_used += i_used;
1084             i_sample_count -= i_used;
1085
1086             ck->p_sample_count_dts[i] = i_used;
1087             ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1088
1089             i_last_dts += i_used * ck->p_sample_delta_dts[i];
1090
1091             if( i_index_sample_used >= stts->i_sample_count[i_index] )
1092             {
1093                 i_index++;
1094                 i_index_sample_used = 0;
1095             }
1096         }
1097     }
1098
1099     /* Find ctts
1100      *  Gives the delta between decoding time (dts) and composition table (pts)
1101      */
1102     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1103     if( p_box )
1104     {
1105         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1106
1107         msg_Warn( p_demux, "CTTS table" );
1108
1109         /* Create pts-dts table per chunk */
1110         i_index = 0; i_index_sample_used = 0;
1111         for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1112         {
1113             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1114             int64_t i_entry, i_sample_count, i;
1115
1116             /* count how many entries are needed for this chunk
1117              * for p_sample_delta_dts and p_sample_count_dts */
1118             i_sample_count = ck->i_sample_count;
1119
1120             i_entry = 0;
1121             while( i_sample_count > 0 )
1122             {
1123                 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1124
1125                 /* don't count already used sample in this entry */
1126                 if( i_entry == 0 )
1127                     i_sample_count += i_index_sample_used;
1128
1129                 i_entry++;
1130             }
1131
1132             /* allocate them */
1133             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1134             ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1135
1136             /* now copy */
1137             i_sample_count = ck->i_sample_count;
1138             for( i = 0; i < i_entry; i++ )
1139             {
1140                 int64_t i_used;
1141                 int64_t i_rest;
1142
1143                 i_rest = ctts->i_sample_count[i_index] -
1144                     i_index_sample_used;
1145
1146                 i_used = __MIN( i_rest, i_sample_count );
1147
1148                 i_index_sample_used += i_used;
1149                 i_sample_count -= i_used;
1150
1151                 ck->p_sample_count_pts[i] = i_used;
1152                 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1153
1154                 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1155                 {
1156                     i_index++;
1157                     i_index_sample_used = 0;
1158                 }
1159             }
1160         }
1161     }
1162
1163     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1164              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1165              i_last_dts / p_demux_track->i_timescale );
1166
1167     return VLC_SUCCESS;
1168 }
1169
1170 /*
1171  * TrackCreateES:
1172  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1173  */
1174 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1175                           unsigned int i_chunk, es_out_id_t **pp_es )
1176 {
1177     MP4_Box_t   *p_sample;
1178     MP4_Box_t   *p_esds;
1179     MP4_Box_t   *p_box;
1180
1181     *pp_es = NULL;
1182
1183     if( !p_track->chunk[i_chunk].i_sample_description_index )
1184     {
1185         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1186                   p_track->i_track_ID );
1187         return VLC_EGENERIC;
1188     }
1189
1190     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1191                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1192
1193     if( !p_sample ||
1194         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1195     {
1196         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1197                   p_track->i_track_ID );
1198         return VLC_EGENERIC;
1199     }
1200
1201     p_track->p_sample = p_sample;
1202
1203     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1204     {
1205         MP4_Box_data_sample_soun_t *p_soun;
1206
1207         p_soun = p_sample->data.p_sample_soun;
1208
1209         if( p_soun->i_qt_version == 0 )
1210         {
1211             switch( p_sample->i_type )
1212             {
1213                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1214                     p_soun->i_qt_version = 1;
1215                     p_soun->i_sample_per_packet = 64;
1216                     p_soun->i_bytes_per_packet  = 34;
1217                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1218                     p_soun->i_bytes_per_sample  = 2;
1219                     break;
1220                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1221                     p_soun->i_qt_version = 1;
1222                     p_soun->i_sample_per_packet = 6;
1223                     p_soun->i_bytes_per_packet  = 2;
1224                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1225                     p_soun->i_bytes_per_sample  = 2;
1226                     break;
1227                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1228                     p_soun->i_qt_version = 1;
1229                     p_soun->i_sample_per_packet = 12;
1230                     p_soun->i_bytes_per_packet  = 2;
1231                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1232                     p_soun->i_bytes_per_sample  = 2;
1233                     break;
1234                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1235                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1236                     p_soun->i_samplesize = 8;
1237                     break;
1238                 default:
1239                     break;
1240             }
1241
1242         }
1243         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1244         {
1245             p_soun->i_qt_version = 0;
1246         }
1247     }
1248
1249
1250     /* It's a little ugly but .. there are special cases */
1251     switch( p_sample->i_type )
1252     {
1253         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1254         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1255             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1256             break;
1257
1258         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1259             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1260
1261             /* Buggy files workaround */
1262             if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1263                 p_sample->data.p_sample_soun->i_sampleratehi) )
1264             {
1265                 MP4_Box_data_sample_soun_t *p_soun =
1266                     p_sample->data.p_sample_soun;
1267
1268                 msg_Warn( p_demux, "i_timescale ("I64Fu") != i_sampleratehi "
1269                           "(%u), making both equal (report any problem).",
1270                           p_track->i_timescale, p_soun->i_sampleratehi );
1271
1272                 if( p_soun->i_sampleratehi )
1273                     p_track->i_timescale = p_soun->i_sampleratehi;
1274                 else
1275                     p_soun->i_sampleratehi = p_track->i_timescale;
1276             }
1277             break;
1278
1279         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1280             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1281             break;
1282
1283         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1284         case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1285             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1286             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1287             /* FIXME UTF-8 doesn't work here ? */
1288             p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1289             break;
1290
1291         default:
1292             p_track->fmt.i_codec = p_sample->i_type;
1293             break;
1294     }
1295
1296     /* now see if esds is present and if so create a data packet
1297         with decoder_specific_info  */
1298 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1299     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1300           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1301         ( p_esds->data.p_esds )&&
1302         ( p_decconfig ) )
1303     {
1304         /* First update information based on i_objectTypeIndication */
1305         switch( p_decconfig->i_objectTypeIndication )
1306         {
1307             case( 0x20 ): /* MPEG4 VIDEO */
1308                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1309                 break;
1310             case( 0x40):
1311                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1312                 break;
1313             case( 0x60):
1314             case( 0x61):
1315             case( 0x62):
1316             case( 0x63):
1317             case( 0x64):
1318             case( 0x65): /* MPEG2 video */
1319                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1320                 break;
1321             /* Theses are MPEG2-AAC */
1322             case( 0x66): /* main profile */
1323             case( 0x67): /* Low complexity profile */
1324             case( 0x68): /* Scaleable Sampling rate profile */
1325                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1326                 break;
1327             /* true MPEG 2 audio */
1328             case( 0x69):
1329                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1330                 break;
1331             case( 0x6a): /* MPEG1 video */
1332                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1333                 break;
1334             case( 0x6b): /* MPEG1 audio */
1335                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1336                 break;
1337             case( 0x6c ): /* jpeg */
1338                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1339                 break;
1340
1341             /* Private ID */
1342             case( 0xe0 ): /* NeroDigital: dvd subs */
1343                 if( p_track->fmt.i_cat == SPU_ES )
1344                 {
1345                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1346                     if( p_track->i_width > 0 )
1347                         p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1348                     if( p_track->i_height > 0 )
1349                         p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1350                     break;
1351                 }
1352             /* Fallback */
1353             default:
1354                 /* Unknown entry, but don't touch i_fourcc */
1355                 msg_Warn( p_demux,
1356                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1357                           p_decconfig->i_objectTypeIndication,
1358                           p_track->i_track_ID );
1359                 break;
1360         }
1361         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1362         if( p_track->fmt.i_extra > 0 )
1363         {
1364             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1365             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1366                     p_track->fmt.i_extra );
1367         }
1368     }
1369     else
1370     {
1371         switch( p_sample->i_type )
1372         {
1373             /* qt decoder, send the complete chunk */
1374             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1375             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1376             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1377             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1378             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1379                 p_track->fmt.i_extra =
1380                     p_sample->data.p_sample_vide->i_qt_image_description;
1381                 if( p_track->fmt.i_extra > 0 )
1382                 {
1383                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1384                     memcpy( p_track->fmt.p_extra,
1385                             p_sample->data.p_sample_vide->p_qt_image_description,
1386                             p_track->fmt.i_extra);
1387                 }
1388                 break;
1389             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1390             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1391             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1392             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1393             case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1394                 p_track->fmt.i_extra =
1395                     p_sample->data.p_sample_soun->i_qt_description;
1396                 if( p_track->fmt.i_extra > 0 )
1397                 {
1398                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1399                     memcpy( p_track->fmt.p_extra,
1400                             p_sample->data.p_sample_soun->p_qt_description,
1401                             p_track->fmt.i_extra);
1402                 }
1403                 break;
1404
1405             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1406             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1407             {
1408                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1409
1410                 if( p_avcC )
1411                 {
1412                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1413                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1414                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1415                             p_track->fmt.i_extra );
1416                 }
1417                 else
1418                 {
1419                     msg_Err( p_demux, "missing avcC" );
1420                 }
1421                 break;
1422             }
1423
1424             default:
1425                 break;
1426         }
1427     }
1428
1429 #undef p_decconfig
1430
1431     /* some last initialisation */
1432     switch( p_track->fmt.i_cat )
1433     {
1434     case( VIDEO_ES ):
1435         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1436         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1437         p_track->fmt.video.i_bits_per_pixel =
1438             p_sample->data.p_sample_vide->i_depth;
1439
1440         /* fall on display size */
1441         if( p_track->fmt.video.i_width <= 0 )
1442             p_track->fmt.video.i_width = p_track->i_width;
1443         if( p_track->fmt.video.i_height <= 0 )
1444             p_track->fmt.video.i_height = p_track->i_height;
1445
1446         /* Find out apect ratio from display size */
1447         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1448             /* Work-around buggy muxed files */
1449             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1450             p_track->fmt.video.i_aspect =
1451                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1452
1453         /* Support for cropping (eg. in H263 files) */
1454         p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1455         p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1456
1457         /* Frame rate */
1458         p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1459         p_track->fmt.video.i_frame_rate_base = 1;
1460
1461         if( p_track->fmt.video.i_frame_rate &&
1462             (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1463             p_box->data.p_stts->i_entry_count >= 1 )
1464         {
1465             p_track->fmt.video.i_frame_rate_base =
1466                 p_box->data.p_stts->i_sample_delta[0];
1467         }
1468
1469         break;
1470
1471     case( AUDIO_ES ):
1472         p_track->fmt.audio.i_channels =
1473             p_sample->data.p_sample_soun->i_channelcount;
1474         p_track->fmt.audio.i_rate =
1475             p_sample->data.p_sample_soun->i_sampleratehi;
1476         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1477             p_sample->data.p_sample_soun->i_sampleratehi *
1478                 p_sample->data.p_sample_soun->i_samplesize;
1479         p_track->fmt.audio.i_bitspersample =
1480             p_sample->data.p_sample_soun->i_samplesize;
1481         break;
1482
1483     default:
1484         break;
1485     }
1486
1487     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1488
1489     return VLC_SUCCESS;
1490 }
1491
1492 /* given a time it return sample/chunk
1493  * it also update elst field of the track
1494  */
1495 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1496                                    int64_t i_start, uint32_t *pi_chunk,
1497                                    uint32_t *pi_sample )
1498 {
1499     demux_sys_t *p_sys = p_demux->p_sys;
1500     MP4_Box_t   *p_stss;
1501     uint64_t     i_dts;
1502     unsigned int i_sample;
1503     unsigned int i_chunk;
1504     int          i_index;
1505
1506     /* FIXME see if it's needed to check p_track->i_chunk_count */
1507     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1508     {
1509         return( VLC_EGENERIC );
1510     }
1511
1512     /* handle elst (find the correct one) */
1513     MP4_TrackSetELST( p_demux, p_track, i_start );
1514     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1515     {
1516         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1517         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1518
1519         /* now calculate i_start for this elst */
1520         /* offset */
1521         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1522         if( i_start < 0 )
1523         {
1524             *pi_chunk = 0;
1525             *pi_sample= 0;
1526
1527             return VLC_SUCCESS;
1528         }
1529         /* to track time scale */
1530         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1531         /* add elst offset */
1532         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1533              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1534             elst->i_media_time[p_track->i_elst] > 0 )
1535         {
1536             i_start += elst->i_media_time[p_track->i_elst];
1537         }
1538
1539         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1540                  "ms (track)", p_track->i_elst,
1541                  i_mvt * 1000 / p_sys->i_timescale,
1542                  i_start * 1000 / p_track->i_timescale );
1543     }
1544     else
1545     {
1546         /* convert absolute time to in timescale unit */
1547         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1548     }
1549
1550     /* we start from sample 0/chunk 0, hope it won't take too much time */
1551     /* *** find good chunk *** */
1552     for( i_chunk = 0; ; i_chunk++ )
1553     {
1554         if( i_chunk + 1 >= p_track->i_chunk_count )
1555         {
1556             /* at the end and can't check if i_start in this chunk,
1557                it will be check while searching i_sample */
1558             i_chunk = p_track->i_chunk_count - 1;
1559             break;
1560         }
1561
1562         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1563             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1564         {
1565             break;
1566         }
1567     }
1568
1569     /* *** find sample in the chunk *** */
1570     i_sample = p_track->chunk[i_chunk].i_sample_first;
1571     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1572     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1573     {
1574         if( i_dts +
1575             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1576             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1577         {
1578             i_dts    +=
1579                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1580                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1581
1582             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1583             i_index++;
1584         }
1585         else
1586         {
1587             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1588             {
1589                 break;
1590             }
1591             i_sample += ( i_start - i_dts ) /
1592                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1593             break;
1594         }
1595     }
1596
1597     if( i_sample >= p_track->i_sample_count )
1598     {
1599         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1600                   "(seeking too far) chunk=%d sample=%d",
1601                   p_track->i_track_ID, i_chunk, i_sample );
1602         return( VLC_EGENERIC );
1603     }
1604
1605
1606     /* *** Try to find nearest sync points *** */
1607     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1608     {
1609         unsigned int i_index;
1610         msg_Dbg( p_demux,
1611                     "track[Id 0x%x] using Sync Sample Box (stss)",
1612                     p_track->i_track_ID );
1613         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1614         {
1615             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1616             {
1617                 if( i_index > 0 )
1618                 {
1619                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1620                             i_sample,
1621                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1622                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1623                     /* new i_sample is less than old so i_chunk can only decreased */
1624                     while( i_chunk > 0 &&
1625                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1626                     {
1627                         i_chunk--;
1628                     }
1629                 }
1630                 else
1631                 {
1632                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1633                             i_sample,
1634                             p_stss->data.p_stss->i_sample_number[i_index] );
1635                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1636                     /* new i_sample is more than old so i_chunk can only increased */
1637                     while( i_chunk < p_track->i_chunk_count - 1 &&
1638                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1639                              p_track->chunk[i_chunk].i_sample_count )
1640                     {
1641                         i_chunk++;
1642                     }
1643                 }
1644                 break;
1645             }
1646         }
1647     }
1648     else
1649     {
1650         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1651                  "Sample Box (stss)", p_track->i_track_ID );
1652     }
1653
1654     *pi_chunk  = i_chunk;
1655     *pi_sample = i_sample;
1656
1657     return VLC_SUCCESS;
1658 }
1659
1660 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1661                                  unsigned int i_chunk, unsigned int i_sample )
1662 {
1663     vlc_bool_t b_reselect = VLC_FALSE;
1664
1665     /* now see if actual es is ok */
1666     if( (p_track->i_chunk >= p_track->i_chunk_count - 1) ||
1667         (p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1668             p_track->chunk[i_chunk].i_sample_description_index) )
1669     {
1670         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1671                   p_track->i_track_ID );
1672
1673         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1674                         p_track->p_es, &b_reselect );
1675
1676         es_out_Del( p_demux->out, p_track->p_es );
1677
1678         p_track->p_es = NULL;
1679
1680         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1681         {
1682             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1683                      p_track->i_track_ID );
1684
1685             p_track->b_ok       = VLC_FALSE;
1686             p_track->b_selected = VLC_FALSE;
1687             return VLC_EGENERIC;
1688         }
1689     }
1690
1691     /* select again the new decoder */
1692     if( b_reselect )
1693     {
1694         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1695     }
1696
1697     p_track->i_chunk    = i_chunk;
1698     p_track->i_sample   = i_sample;
1699
1700     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1701 }
1702
1703 /****************************************************************************
1704  * MP4_TrackCreate:
1705  ****************************************************************************
1706  * Parse track information and create all needed data to run a track
1707  * If it succeed b_ok is set to 1 else to 0
1708  ****************************************************************************/
1709 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1710                              MP4_Box_t *p_box_trak )
1711 {
1712     demux_sys_t *p_sys = p_demux->p_sys;
1713
1714     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1715     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1716     MP4_Box_t *p_elst;
1717
1718     MP4_Box_t *p_mdhd;
1719     MP4_Box_t *p_udta;
1720     MP4_Box_t *p_hdlr;
1721
1722     MP4_Box_t *p_vmhd;
1723     MP4_Box_t *p_smhd;
1724
1725     MP4_Box_t *p_drms;
1726
1727     unsigned int i;
1728     char language[4];
1729
1730     /* hint track unsupported */
1731
1732     /* set default value (-> track unusable) */
1733     p_track->b_ok       = VLC_FALSE;
1734     p_track->b_enable   = VLC_FALSE;
1735     p_track->b_selected = VLC_FALSE;
1736
1737     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1738
1739     if( !p_tkhd )
1740     {
1741         return;
1742     }
1743
1744     /* do we launch this track by default ? */
1745     p_track->b_enable =
1746         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1747
1748     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1749     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1750     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1751
1752     if( p_tref )
1753     {
1754 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1755     }
1756
1757     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1758     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1759
1760     if( ( !p_mdhd )||( !p_hdlr ) )
1761     {
1762         return;
1763     }
1764
1765     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1766
1767     for( i = 0; i < 3; i++ )
1768     {
1769         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1770     }
1771     language[3] = '\0';
1772
1773     switch( p_hdlr->data.p_hdlr->i_handler_type )
1774     {
1775         case( FOURCC_soun ):
1776             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1777             {
1778                 return;
1779             }
1780             p_track->fmt.i_cat = AUDIO_ES;
1781             break;
1782
1783         case( FOURCC_vide ):
1784             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1785             {
1786                 return;
1787             }
1788             p_track->fmt.i_cat = VIDEO_ES;
1789             break;
1790
1791         case( FOURCC_text ):
1792         case( FOURCC_subp ):
1793         case( FOURCC_tx3g ):
1794             p_track->fmt.i_cat = SPU_ES;
1795             break;
1796
1797         default:
1798             return;
1799     }
1800
1801     p_track->i_elst = 0;
1802     p_track->i_elst_time = 0;
1803     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1804     {
1805         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1806         unsigned int i;
1807
1808         msg_Warn( p_demux, "elst box found" );
1809         for( i = 0; i < elst->i_entry_count; i++ )
1810         {
1811             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd
1812                      "ms) rate=%d.%d", i,
1813                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1814                      elst->i_media_time[i] >= 0 ?
1815                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
1816                      I64C(-1),
1817                      elst->i_media_rate_integer[i],
1818                      elst->i_media_rate_fraction[i] );
1819         }
1820     }
1821
1822
1823 /*  TODO
1824     add support for:
1825     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1826 */
1827     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1828         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1829     {
1830         return;
1831     }
1832
1833     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1834     p_track->b_drms = p_drms != NULL;
1835     p_track->p_drms = p_track->b_drms ?
1836         p_drms->data.p_sample_soun->p_drms : NULL;
1837
1838     /* Set language */
1839     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1840     {
1841         p_track->fmt.psz_language = strdup( language );
1842     }
1843
1844     p_udta = MP4_BoxGet( p_box_trak, "udta" );
1845     if( p_udta )
1846     {
1847         MP4_Box_t *p_0xa9xxx;
1848         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1849                  p_0xa9xxx = p_0xa9xxx->p_next )
1850         {
1851             switch( p_0xa9xxx->i_type )
1852             {
1853                 case FOURCC_0xa9nam:
1854                     p_track->fmt.psz_description =
1855                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1856                     break;
1857             }
1858         }
1859     }
1860
1861     /* Create chunk index table and sample index table */
1862     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1863         TrackCreateSamplesIndex( p_demux, p_track ) )
1864     {
1865         return; /* cannot create chunks index */
1866     }
1867
1868     p_track->i_chunk  = 0;
1869     p_track->i_sample = 0;
1870
1871     /* now create es */
1872     if( TrackCreateES( p_demux,
1873                        p_track, p_track->i_chunk,
1874                        &p_track->p_es ) )
1875     {
1876         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1877                  p_track->i_track_ID );
1878         return;
1879     }
1880
1881 #if 0
1882     {
1883         int i;
1884         for( i = 0; i < p_track->i_chunk_count; i++ )
1885         {
1886             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1887                      i, p_track->chunk[i].i_sample_count,
1888                      p_track->chunk[i].i_first_dts );
1889
1890         }
1891     }
1892 #endif
1893     p_track->b_ok = VLC_TRUE;
1894 }
1895
1896 /****************************************************************************
1897  * MP4_TrackDestroy:
1898  ****************************************************************************
1899  * Destroy a track created by MP4_TrackCreate.
1900  ****************************************************************************/
1901 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1902 {
1903     unsigned int i_chunk;
1904
1905     p_track->b_ok = VLC_FALSE;
1906     p_track->b_enable   = VLC_FALSE;
1907     p_track->b_selected = VLC_FALSE;
1908
1909     es_format_Clean( &p_track->fmt );
1910
1911     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1912     {
1913         if( p_track->chunk )
1914         {
1915            FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
1916            FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
1917
1918            FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
1919            FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
1920         }
1921     }
1922     FREENULL( p_track->chunk );
1923
1924     if( !p_track->i_sample_size )
1925     {
1926         FREENULL( p_track->p_sample_size );
1927     }
1928 }
1929
1930 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1931                             mtime_t i_start )
1932 {
1933     if( !p_track->b_ok )
1934     {
1935         return VLC_EGENERIC;
1936     }
1937
1938     if( p_track->b_selected )
1939     {
1940         msg_Warn( p_demux, "track[Id 0x%x] already selected",
1941                   p_track->i_track_ID );
1942         return VLC_SUCCESS;
1943     }
1944
1945     return MP4_TrackSeek( p_demux, p_track, i_start );
1946 }
1947
1948 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1949 {
1950     if( !p_track->b_ok )
1951     {
1952         return;
1953     }
1954
1955     if( !p_track->b_selected )
1956     {
1957         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1958                   p_track->i_track_ID );
1959         return;
1960     }
1961     if( p_track->p_es )
1962     {
1963         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1964                         p_track->p_es, VLC_FALSE );
1965     }
1966
1967     p_track->b_selected = VLC_FALSE;
1968 }
1969
1970 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1971                           mtime_t i_start )
1972 {
1973     uint32_t i_chunk;
1974     uint32_t i_sample;
1975
1976     if( !p_track->b_ok )
1977     {
1978         return( VLC_EGENERIC );
1979     }
1980
1981     p_track->b_selected = VLC_FALSE;
1982
1983     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1984                                 &i_chunk, &i_sample ) )
1985     {
1986         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1987                   p_track->i_track_ID );
1988         return( VLC_EGENERIC );
1989     }
1990
1991     p_track->b_selected = VLC_TRUE;
1992
1993     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
1994         VLC_SUCCESS )
1995     {
1996         p_track->b_selected = VLC_TRUE;
1997
1998         es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
1999                         p_track->p_es, i_start );
2000     }
2001
2002     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2003 }
2004
2005
2006 /*
2007  * 3 types: for audio
2008  *
2009  */
2010 #define QT_V0_MAX_SAMPLES 1024
2011 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2012 {
2013     int i_size;
2014     MP4_Box_data_sample_soun_t *p_soun;
2015
2016     if( p_track->i_sample_size == 0 )
2017     {
2018         /* most simple case */
2019         return p_track->p_sample_size[p_track->i_sample];
2020     }
2021     if( p_track->fmt.i_cat != AUDIO_ES )
2022     {
2023         return p_track->i_sample_size;
2024     }
2025
2026     p_soun = p_track->p_sample->data.p_sample_soun;
2027
2028     if( p_soun->i_qt_version == 1 )
2029     {
2030         i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2031             p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2032     }
2033     else if( p_track->i_sample_size > 256 )
2034     {
2035         /* We do that so we don't read too much data
2036          * (in this case we are likely dealing with compressed data) */
2037         i_size = p_track->i_sample_size;
2038     }
2039     else
2040     {
2041         /* Read a bunch of samples at once */
2042         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2043             ( p_track->i_sample -
2044               p_track->chunk[p_track->i_chunk].i_sample_first );
2045
2046         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2047         i_size = i_samples * p_track->i_sample_size;
2048     }
2049
2050     //fprintf( stderr, "size=%d\n", i_size );
2051     return i_size;
2052 }
2053
2054 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2055 {
2056     unsigned int i_sample;
2057     uint64_t i_pos;
2058
2059     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2060
2061     if( p_track->i_sample_size )
2062     {
2063         MP4_Box_data_sample_soun_t *p_soun =
2064             p_track->p_sample->data.p_sample_soun;
2065
2066         if( p_soun->i_qt_version == 0 )
2067         {
2068             i_pos += ( p_track->i_sample -
2069                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
2070                      p_track->i_sample_size;
2071         }
2072         else
2073         {
2074             /* we read chunk by chunk */
2075             i_pos += 0;
2076         }
2077     }
2078     else
2079     {
2080         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2081              i_sample < p_track->i_sample; i_sample++ )
2082         {
2083             i_pos += p_track->p_sample_size[i_sample];
2084         }
2085     }
2086
2087     return i_pos;
2088 }
2089
2090 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2091 {
2092     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2093     {
2094         MP4_Box_data_sample_soun_t *p_soun;
2095
2096         p_soun = p_track->p_sample->data.p_sample_soun;
2097
2098         if( p_soun->i_qt_version == 1 )
2099         {
2100             /* chunk by chunk */
2101             p_track->i_sample =
2102                 p_track->chunk[p_track->i_chunk].i_sample_first +
2103                 p_track->chunk[p_track->i_chunk].i_sample_count;
2104         }
2105         else if( p_track->i_sample_size > 256 )
2106         {
2107             /* We do that so we don't read too much data
2108              * (in this case we are likely dealing with compressed data) */
2109             p_track->i_sample += 1;
2110         }
2111         else
2112         {
2113             /* FIXME */
2114             p_track->i_sample += QT_V0_MAX_SAMPLES;
2115             if( p_track->i_sample >
2116                 p_track->chunk[p_track->i_chunk].i_sample_first +
2117                 p_track->chunk[p_track->i_chunk].i_sample_count )
2118             {
2119                 p_track->i_sample =
2120                     p_track->chunk[p_track->i_chunk].i_sample_first +
2121                     p_track->chunk[p_track->i_chunk].i_sample_count;
2122             }
2123         }
2124     }
2125     else
2126     {
2127         p_track->i_sample++;
2128     }
2129
2130     if( p_track->i_sample >= p_track->i_sample_count )
2131         return VLC_EGENERIC;
2132
2133     /* Have we changed chunk ? */
2134     if( p_track->i_sample >=
2135             p_track->chunk[p_track->i_chunk].i_sample_first +
2136             p_track->chunk[p_track->i_chunk].i_sample_count )
2137     {
2138         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2139                                   p_track->i_sample ) )
2140         {
2141             msg_Warn( p_demux, "track[0x%x] will be disabled "
2142                       "(cannot restart decoder)", p_track->i_track_ID );
2143             MP4_TrackUnselect( p_demux, p_track );
2144             return VLC_EGENERIC;
2145         }
2146     }
2147
2148     /* Have we changed elst */
2149     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2150     {
2151         demux_sys_t *p_sys = p_demux->p_sys;
2152         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2153         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2154                         p_sys->i_timescale / (int64_t)1000000;
2155
2156         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2157             i_mvt >= p_track->i_elst_time +
2158                      elst->i_segment_duration[p_track->i_elst] )
2159         {
2160             MP4_TrackSetELST( p_demux, p_track,
2161                               MP4_TrackGetDTS( p_demux, p_track ) );
2162         }
2163     }
2164
2165     return VLC_SUCCESS;
2166 }
2167
2168 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2169                               int64_t i_time )
2170 {
2171     demux_sys_t *p_sys = p_demux->p_sys;
2172     int         i_elst_last = tk->i_elst;
2173
2174     /* handle elst (find the correct one) */
2175     tk->i_elst      = 0;
2176     tk->i_elst_time = 0;
2177     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2178     {
2179         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2180         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2181
2182         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2183         {
2184             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2185
2186             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2187             {
2188                 break;
2189             }
2190             tk->i_elst_time += i_dur;
2191         }
2192
2193         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2194         {
2195             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2196             tk->i_elst = elst->i_entry_count - 1;
2197             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2198         }
2199
2200         if( elst->i_media_time[tk->i_elst] < 0 )
2201         {
2202             /* track offset */
2203             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2204         }
2205     }
2206     if( i_elst_last != tk->i_elst )
2207     {
2208         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2209     }
2210 }
2211
2212 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
2213                      playlist_item_t **pp_item )
2214 {
2215      vlc_bool_t b_play = var_CreateGetBool( p_demux, "playlist-autostart" );
2216
2217      if( b_play && p_playlist->status.p_item &&
2218              p_playlist->status.p_item->p_input ==
2219                 input_GetItem((input_thread_t *)p_demux->p_parent))
2220      {
2221          msg_Dbg( p_playlist, "starting playlist playback" );
2222          *pp_item = p_playlist->status.p_item;
2223          b_play = VLC_TRUE;
2224      }
2225      else
2226      {
2227          input_item_t *p_current = input_GetItem(
2228                                     (input_thread_t*)p_demux->p_parent);
2229          *pp_item = playlist_ItemGetByInput( p_playlist, p_current, VLC_FALSE );
2230          if( !*pp_item )
2231          {
2232              msg_Dbg( p_playlist, "unable to find item in playlist");
2233          }
2234          msg_Dbg( p_playlist, "not starting playlist playback");
2235          b_play = VLC_FALSE;
2236      }
2237      return b_play;
2238 }
2239
2240