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     input_title_t *p_title;
 157 };
 158
 159 /*****************************************************************************
 160  * Declaration of local function
 161  *****************************************************************************/
 162 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *);
 163 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
 164
 165 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 166 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 167
 168 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 169
 170 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 171 static int      MP4_TrackSampleSize( mp4_track_t * );
 172 static int      MP4_TrackNextSample( demux_t *, mp4_track_t * );
 173 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 174
 175 static void     MP4_UpdateSeekpoint( demux_t * );
 176
 177 /* Return time in s of a track */
 178 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 179 {
 180 #define chunk p_track->chunk[p_track->i_chunk]
 181
 182     unsigned int i_index = 0;
 183     unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
 184     int64_t i_dts = chunk.i_first_dts;
 185
 186     while( i_sample > 0 )
 187     {
 188         if( i_sample > chunk.p_sample_count_dts[i_index] )
 189         {
 190             i_dts += chunk.p_sample_count_dts[i_index] *
 191                 chunk.p_sample_delta_dts[i_index];
 192             i_sample -= chunk.p_sample_count_dts[i_index];
 193             i_index++;
 194         }
 195         else
 196         {
 197             i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
 198             i_sample = 0;
 199             break;
 200         }
 201     }
 202
 203 #undef chunk
 204
 205     /* now handle elst */
 206     if( p_track->p_elst )
 207     {
 208         demux_sys_t         *p_sys = p_demux->p_sys;
 209         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
 210
 211         /* convert to offset */
 212         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 213               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 214             elst->i_media_time[p_track->i_elst] > 0 )
 215         {
 216             i_dts -= elst->i_media_time[p_track->i_elst];
 217         }
 218
 219         /* add i_elst_time */
 220         i_dts += p_track->i_elst_time * p_track->i_timescale /
 221             p_sys->i_timescale;
 222
 223         if( i_dts < 0 ) i_dts = 0;
 224     }
 225
 226     return I64C(1000000) * i_dts / p_track->i_timescale;
 227 }
 228
 229 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
 230 {
 231     mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
 232     unsigned int i_index = 0;
 233     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 234
 235     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 236         return -1;
 237
 238     for( i_index = 0;; i_index++ )
 239     {
 240         if( i_sample < ck->p_sample_count_pts[i_index] )
 241             return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
 242                    (int64_t)p_track->i_timescale;
 243
 244         i_sample -= ck->p_sample_count_pts[i_index];
 245     }
 246 }
 247
 248 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 249 {
 250     return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
 251 }
 252
 253 /* Function to lookup the currently playing item */
 254 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
 255                      playlist_item_t **pp_item );
 256
 257 /*****************************************************************************
 258  * Open: check file and initializes MP4 structures
 259  *****************************************************************************/
 260 static int Open( vlc_object_t * p_this )
 261 {
 262     demux_t  *p_demux = (demux_t *)p_this;
 263     demux_sys_t     *p_sys;
 264
 265     uint8_t         *p_peek;
 266
 267     MP4_Box_t       *p_ftyp;
 268     MP4_Box_t       *p_rmra;
 269     MP4_Box_t       *p_mvhd;
 270     MP4_Box_t       *p_trak;
 271     MP4_Box_t       *p_chpl;
 272
 273     unsigned int    i;
 274     vlc_bool_t      b_seekable;
 275
 276     /* A little test to see if it could be a mp4 */
 277     if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
 278
 279     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 280     {
 281         case FOURCC_ftyp:
 282         case FOURCC_moov:
 283         case FOURCC_foov:
 284         case FOURCC_moof:
 285         case FOURCC_mdat:
 286         case FOURCC_udta:
 287         case FOURCC_free:
 288         case FOURCC_skip:
 289         case FOURCC_wide:
 290         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 291             break;
 292          default:
 293             return VLC_EGENERIC;
 294     }
 295
 296     /* I need to seek */
 297     stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
 298     if( !b_seekable )
 299     {
 300         msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
 301         return VLC_EGENERIC;
 302     }
 303
 304     /*Set exported functions */
 305     p_demux->pf_demux = Demux;
 306     p_demux->pf_control = Control;
 307
 308     /* create our structure that will contains all data */
 309     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 310     memset( p_sys, 0, sizeof( demux_sys_t ) );
 311
 312     /* Now load all boxes ( except raw data ) */
 313     if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 314     {
 315         msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
 316         goto error;
 317     }
 318
 319     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 320
 321     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 322     {
 323         switch( p_ftyp->data.p_ftyp->i_major_brand )
 324         {
 325             case( FOURCC_isom ):
 326                 msg_Dbg( p_demux,
 327                          "ISO Media file (isom) version %d.",
 328                          p_ftyp->data.p_ftyp->i_minor_version );
 329                 break;
 330             default:
 331                 msg_Dbg( p_demux,
 332                          "unrecognized major file specification (%4.4s).",
 333                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 334                 break;
 335         }
 336     }
 337     else
 338     {
 339         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 340     }
 341
 342     /* the file need to have one moov box */
 343     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 344     {
 345         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 346
 347         if( !p_foov )
 348         {
 349             msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
 350             goto error;
 351         }
 352         /* we have a free box as a moov, rename it */
 353         p_foov->i_type = FOURCC_moov;
 354     }
 355
 356     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 357     {
 358         playlist_t *p_playlist;
 359         playlist_item_t *p_current, *p_item_in_category;
 360         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 361         int        i;
 362         vlc_bool_t b_play = VLC_FALSE;
 363
 364         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 365
 366         p_playlist =
 367             (playlist_t *)vlc_object_find( p_demux,
 368                                            VLC_OBJECT_PLAYLIST,
 369                                            FIND_ANYWHERE );
 370         if( p_playlist )
 371         {
 372             b_play = FindItem( p_demux, p_playlist, &p_current );
 373             p_item_in_category = playlist_ItemToNode( p_playlist, p_current, VLC_TRUE );
 374             p_current->p_input->i_type = ITEM_TYPE_PLAYLIST;
 375
 376             for( i = 0; i < i_count; i++ )
 377             {
 378                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 379                 char      *psz_ref;
 380                 uint32_t  i_ref_type;
 381
 382                 if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
 383                 {
 384                     continue;
 385                 }
 386                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 387
 388                 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 389                          psz_ref, (char*)&i_ref_type );
 390
 391                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 392                 {
 393                     if( strstr( psz_ref, "qt5gateQT" ) )
 394                     {
 395                         msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 396                         continue;
 397                     }
 398                     if( !strncmp( psz_ref, "http://", 7 ) ||
 399                         !strncmp( psz_ref, "rtsp://", 7 ) )
 400                     {
 401                         ;
 402                     }
 403                     else
 404                     {
 405                         char *psz_absolute;
 406                         char *psz_path = strdup( p_demux->psz_path );
 407                         char *end = strrchr( psz_path, '/' );
 408                         if( end ) end[1] = '\0';
 409                         else *psz_path = '\0';
 410
 411                         asprintf( &psz_absolute, "%s://%s%s",
 412                                       p_demux->psz_access, psz_path, psz_ref );
 413
 414                         if( psz_ref ) free( psz_ref );
 415                         psz_ref = psz_absolute;
 416                         free( psz_path );
 417                     }
 418                     if( p_current )
 419                     {
 420                         input_item_t *p_input;
 421                         msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 422                         p_input = input_ItemNewExt( p_playlist, psz_ref, NULL,
 423                                             0, NULL, -1 );
 424                         input_ItemCopyOptions( p_current->p_input, p_input );
 425                         playlist_BothAddInput( p_playlist, p_input,
 426                                                p_item_in_category,
 427                                                PLAYLIST_APPEND, PLAYLIST_END,
 428                                                NULL, NULL, VLC_FALSE );
 429                     }
 430                 }
 431                 else
 432                 {
 433                     msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 434                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 435                 }
 436                 if( psz_ref ) free( psz_ref );
 437             }
 438             if( b_play && p_item_in_category &&
 439                 p_item_in_category->i_children > 0 )
 440             {
 441                 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, VLC_TRUE,
 442                                   p_item_in_category, NULL );
 443             }
 444             vlc_object_release( p_playlist );
 445         }
 446         else
 447         {
 448             msg_Err( p_demux, "can't find playlist" );
 449         }
 450     }
 451
 452     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 453     {
 454         if( !p_rmra )
 455         {
 456             msg_Err( p_demux, "cannot find /moov/mvhd" );
 457             goto error;
 458         }
 459         else
 460         {
 461             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 462             p_demux->pf_demux = DemuxRef;
 463             return VLC_SUCCESS;
 464         }
 465     }
 466     else
 467     {
 468         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 469         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 470     }
 471
 472     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 473     {
 474         msg_Err( p_demux, "cannot find any /moov/trak" );
 475         goto error;
 476     }
 477     msg_Dbg( p_demux, "find %d track%c",
 478                         p_sys->i_tracks,
 479                         p_sys->i_tracks ? 's':' ' );
 480
 481     /* allocate memory */
 482     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 483     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 484
 485     /* now process each track and extract all usefull information */
 486     for( i = 0; i < p_sys->i_tracks; i++ )
 487     {
 488         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 489         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
 490
 491         if( p_sys->track[i].b_ok )
 492         {
 493             const char *psz_cat;
 494             switch( p_sys->track[i].fmt.i_cat )
 495             {
 496                 case( VIDEO_ES ):
 497                     psz_cat = "video";
 498                     break;
 499                 case( AUDIO_ES ):
 500                     psz_cat = "audio";
 501                     break;
 502                 case( SPU_ES ):
 503                     psz_cat = "subtitle";
 504                     break;
 505
 506                 default:
 507                     psz_cat = "unknown";
 508                     break;
 509             }
 510
 511             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 512                      p_sys->track[i].i_track_ID, psz_cat,
 513                      p_sys->track[i].b_enable ? "enable":"disable",
 514                      p_sys->track[i].fmt.psz_language ?
 515                      p_sys->track[i].fmt.psz_language : "undef" );
 516         }
 517         else
 518         {
 519             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 520                      p_sys->track[i].i_track_ID );
 521         }
 522
 523     }
 524
 525     /* Process chapter if any */
 526     if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
 527     {
 528         int i;
 529         p_sys->p_title = vlc_input_title_New();
 530         for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
 531         {
 532             seekpoint_t *s = vlc_seekpoint_New();
 533
 534             s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
 535             EnsureUTF8( s->psz_name );
 536             s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
 537             TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
 538         }
 539     }
 540     return VLC_SUCCESS;
 541
 542 error:
 543     if( p_sys->p_root )
 544     {
 545         MP4_BoxFree( p_demux->s, p_sys->p_root );
 546     }
 547     free( p_sys );
 548     return VLC_EGENERIC;
 549 }
 550
 551 /*****************************************************************************
 552  * Demux: read packet and send them to decoders
 553  *****************************************************************************
 554  * TODO check for newly selected track (ie audio upt to now )
 555  *****************************************************************************/
 556 static int Demux( demux_t *p_demux )
 557 {
 558     demux_sys_t *p_sys = p_demux->p_sys;
 559     unsigned int i_track;
 560
 561
 562     unsigned int i_track_selected;
 563
 564     /* check for newly selected/unselected track */
 565     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 566          i_track++ )
 567     {
 568         mp4_track_t *tk = &p_sys->track[i_track];
 569         vlc_bool_t b;
 570
 571         if( !tk->b_ok ||
 572             ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
 573         {
 574             continue;
 575         }
 576
 577         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 578
 579         if( tk->b_selected && !b )
 580         {
 581             MP4_TrackUnselect( p_demux, tk );
 582         }
 583         else if( !tk->b_selected && b)
 584         {
 585             MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 586         }
 587
 588         if( tk->b_selected )
 589         {
 590             i_track_selected++;
 591         }
 592     }
 593
 594     if( i_track_selected <= 0 )
 595     {
 596         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 597         if( p_sys->i_timescale > 0 )
 598         {
 599             int64_t i_length = (mtime_t)1000000 *
 600                                (mtime_t)p_sys->i_duration /
 601                                (mtime_t)p_sys->i_timescale;
 602             if( MP4_GetMoviePTS( p_sys ) >= i_length )
 603                 return 0;
 604             return 1;
 605         }
 606
 607         msg_Warn( p_demux, "no track selected, exiting..." );
 608         return 0;
 609     }
 610
 611     /* */
 612     MP4_UpdateSeekpoint( p_demux );
 613
 614     /* first wait for the good time to read a packet */
 615     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
 616
 617     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
 618
 619     /* we will read 100ms for each stream so ...*/
 620     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 621
 622     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 623     {
 624         mp4_track_t *tk = &p_sys->track[i_track];
 625
 626         if( !tk->b_ok || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
 627         {
 628             continue;
 629         }
 630
 631         while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
 632         {
 633 #if 0
 634             msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
 635                      MP4_TrackGetDTS( p_demux, tk ),
 636                      MP4_GetMoviePTS( p_sys ) );
 637 #endif
 638
 639             if( MP4_TrackSampleSize( tk ) > 0 )
 640             {
 641                 block_t *p_block;
 642                 int64_t i_delta;
 643
 644                 /* go,go go ! */
 645                 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
 646                 {
 647                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 648                               tk->i_track_ID );
 649                     MP4_TrackUnselect( p_demux, tk );
 650                     break;
 651                 }
 652
 653                 /* now read pes */
 654                 if( !(p_block =
 655                          stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
 656                 {
 657                     msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
 658                               tk->i_track_ID );
 659                     MP4_TrackUnselect( p_demux, tk );
 660                     break;
 661                 }
 662
 663                 if( tk->b_drms && tk->p_drms )
 664                 {
 665                     drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
 666                                   p_block->i_buffer );
 667                 }
 668                 else if( tk->fmt.i_cat == SPU_ES )
 669                 {
 670                     if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
 671                         p_block->i_buffer >= 2 )
 672                     {
 673                         uint16_t i_size = GetWBE( p_block->p_buffer );
 674
 675                         if( i_size + 2 <= p_block->i_buffer )
 676                         {
 677                             char *p;
 678                             /* remove the length field, and append a '\0' */
 679                             memmove( &p_block->p_buffer[0],
 680                                      &p_block->p_buffer[2], i_size );
 681                             p_block->p_buffer[i_size] = '\0';
 682                             p_block->i_buffer = i_size + 1;
 683
 684                             /* convert \r -> \n */
 685                             while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
 686                             {
 687                                 *p = '\n';
 688                             }
 689                         }
 690                         else
 691                         {
 692                             /* Invalid */
 693                             p_block->i_buffer = 0;
 694                         }
 695                     }
 696                 }
 697                 /* dts */
 698                 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
 699                 /* pts */
 700                 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
 701                 if( i_delta != -1 )
 702                     p_block->i_pts = p_block->i_dts + i_delta;
 703                 else if( tk->fmt.i_cat != VIDEO_ES )
 704                     p_block->i_pts = p_block->i_dts;
 705                 else
 706                     p_block->i_pts = 0;
 707
 708                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 709                     es_out_Send( p_demux->out, tk->p_es, p_block );
 710             }
 711
 712             /* Next sample */
 713             if( MP4_TrackNextSample( p_demux, tk ) )
 714             {
 715                 break;
 716             }
 717         }
 718     }
 719
 720     return 1;
 721 }
 722
 723 static void MP4_UpdateSeekpoint( demux_t *p_demux )
 724 {
 725     demux_sys_t *p_sys = p_demux->p_sys;
 726     int64_t i_time;
 727     int i;
 728     if( !p_sys->p_title )
 729         return;
 730     i_time = MP4_GetMoviePTS( p_sys );
 731     for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
 732     {
 733         if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
 734             break;
 735     }
 736     i--;
 737
 738     if( i != p_demux->info.i_seekpoint && i >= 0 )
 739     {
 740         p_demux->info.i_seekpoint = i;
 741         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
 742     }
 743 }
 744 /*****************************************************************************
 745  * Seek: Got to i_date
 746 ******************************************************************************/
 747 static int Seek( demux_t *p_demux, mtime_t i_date )
 748 {
 749     demux_sys_t *p_sys = p_demux->p_sys;
 750     unsigned int i_track;
 751
 752     /* First update update global time */
 753     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 754     p_sys->i_pcr  = i_date;
 755
 756     /* Now for each stream try to go to this time */
 757     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 758     {
 759         mp4_track_t *tk = &p_sys->track[i_track];
 760         MP4_TrackSeek( p_demux, tk, i_date );
 761     }
 762     MP4_UpdateSeekpoint( p_demux );
 763     return VLC_SUCCESS;
 764 }
 765
 766 /*****************************************************************************
 767  * Control:
 768  *****************************************************************************/
 769 static int Control( demux_t *p_demux, int i_query, va_list args )
 770 {
 771     demux_sys_t *p_sys = p_demux->p_sys;
 772
 773     double f, *pf;
 774     int64_t i64, *pi64;
 775
 776     switch( i_query )
 777     {
 778         case DEMUX_GET_POSITION:
 779             pf = (double*)va_arg( args, double * );
 780             if( p_sys->i_duration > 0 )
 781             {
 782                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 783             }
 784             else
 785             {
 786                 *pf = 0.0;
 787             }
 788             return VLC_SUCCESS;
 789
 790         case DEMUX_SET_POSITION:
 791             f = (double)va_arg( args, double );
 792             if( p_sys->i_timescale > 0 )
 793             {
 794                 i64 = (int64_t)( f * (double)1000000 *
 795                                  (double)p_sys->i_duration /
 796                                  (double)p_sys->i_timescale );
 797                 return Seek( p_demux, i64 );
 798             }
 799             else return VLC_SUCCESS;
 800
 801         case DEMUX_GET_TIME:
 802             pi64 = (int64_t*)va_arg( args, int64_t * );
 803             if( p_sys->i_timescale > 0 )
 804             {
 805                 *pi64 = (mtime_t)1000000 *
 806                         (mtime_t)p_sys->i_time /
 807                         (mtime_t)p_sys->i_timescale;
 808             }
 809             else *pi64 = 0;
 810             return VLC_SUCCESS;
 811
 812         case DEMUX_SET_TIME:
 813             i64 = (int64_t)va_arg( args, int64_t );
 814             return Seek( p_demux, i64 );
 815
 816         case DEMUX_GET_LENGTH:
 817             pi64 = (int64_t*)va_arg( args, int64_t * );
 818             if( p_sys->i_timescale > 0 )
 819             {
 820                 *pi64 = (mtime_t)1000000 *
 821                         (mtime_t)p_sys->i_duration /
 822                         (mtime_t)p_sys->i_timescale;
 823             }
 824             else *pi64 = 0;
 825             return VLC_SUCCESS;
 826
 827         case DEMUX_GET_FPS:
 828             msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
 829             return VLC_EGENERIC;
 830
 831         case DEMUX_GET_META:
 832         {
 833             vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
 834             MP4_Box_t  *p_0xa9xxx;
 835
 836             MP4_Box_t  *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
 837             if( p_udta == NULL )
 838             {
 839                 p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
 840                 if( p_udta == NULL )
 841                 {
 842                     return VLC_EGENERIC;
 843                 }
 844             }
 845
 846             for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
 847                  p_0xa9xxx = p_0xa9xxx->p_next )
 848             {
 849
 850                 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
 851                     continue;
 852
 853                 /* FIXME FIXME: should convert from whatever the character
 854                  * encoding of MP4 meta data is to UTF-8. */
 855 #define SET(fct) do { char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" ); \
 856     if( psz_utf ) { EnsureUTF8( psz_utf );  \
 857                     fct( p_meta, psz_utf ); free( psz_utf ); } } while(0)
 858
 859                 /* XXX Becarefull p_udta can have box that are not 0xa9xx */
 860                 switch( p_0xa9xxx->i_type )
 861                 {
 862                 case FOURCC_0xa9nam: /* Full name */
 863                     SET( vlc_meta_SetTitle );
 864                     break;
 865                 case FOURCC_0xa9aut:
 866                     SET( vlc_meta_SetArtist );
 867                     break;
 868                 case FOURCC_0xa9ART:
 869                     SET( vlc_meta_SetArtist );
 870                     break;
 871                 case FOURCC_0xa9cpy:
 872                     SET( vlc_meta_SetCopyright );
 873                     break;
 874                 case FOURCC_0xa9day: /* Creation Date */
 875                     SET( vlc_meta_SetDate );
 876                     break;
 877                 case FOURCC_0xa9des: /* Description */
 878                     SET( vlc_meta_SetDescription );
 879                     break;
 880                 case FOURCC_0xa9gen: /* Genre */
 881                     SET( vlc_meta_SetGenre );
 882                     break;
 883
 884                 case FOURCC_0xa9alb: /* Album */
 885                     SET( vlc_meta_SetAlbum );
 886                     break;
 887
 888                 case FOURCC_0xa9swr:
 889                 case FOURCC_0xa9inf: /* Information */
 890                 case FOURCC_0xa9dir: /* Director */
 891                 case FOURCC_0xa9dis: /* Disclaimer */
 892                 case FOURCC_0xa9enc: /* Encoded By */
 893                 case FOURCC_0xa9trk: /* Track */
 894                 case FOURCC_0xa9cmt: /* Commment */
 895                 case FOURCC_0xa9url: /* URL */
 896                 case FOURCC_0xa9req: /* Requirements */
 897                 case FOURCC_0xa9fmt: /* Original Format */
 898                 case FOURCC_0xa9dsa: /* Display Source As */
 899                 case FOURCC_0xa9hst: /* Host Computer */
 900                 case FOURCC_0xa9prd: /* Producer */
 901                 case FOURCC_0xa9prf: /* Performers */
 902                 case FOURCC_0xa9ope: /* Original Performer */
 903                 case FOURCC_0xa9src: /* Providers Source Content */
 904                 case FOURCC_0xa9wrt: /* Writer */
 905                 case FOURCC_0xa9com: /* Composer */
 906                 case FOURCC_WLOC:    /* Window Location */
 907                     /* TODO one day, but they aren't really meaningfull */
 908                     break;
 909 #undef SET
 910
 911                 default:
 912                     break;
 913                 }
 914             }
 915             return VLC_SUCCESS;
 916         }
 917
 918         case DEMUX_GET_TITLE_INFO:
 919         {
 920             input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
 921             int *pi_int    = (int*)va_arg( args, int* );
 922             int *pi_title_offset = (int*)va_arg( args, int* );
 923             int *pi_seekpoint_offset = (int*)va_arg( args, int* );
 924
 925             if( !p_sys->p_title )
 926                 return VLC_EGENERIC;
 927
 928             *pi_int = 1;
 929             *ppp_title = malloc( sizeof( input_title_t**) );
 930             (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
 931             *pi_title_offset = 0;
 932             *pi_seekpoint_offset = 0;
 933             return VLC_SUCCESS;
 934         }
 935         case DEMUX_SET_TITLE:
 936         {
 937             const int i_title = (int)va_arg( args, int );
 938             if( !p_sys->p_title || i_title != 0 )
 939                 return VLC_EGENERIC;
 940             return VLC_SUCCESS;
 941         }
 942         case DEMUX_SET_SEEKPOINT:
 943         {
 944             const int i_seekpoint = (int)va_arg( args, int );
 945             if( !p_sys->p_title )
 946                 return VLC_EGENERIC;
 947             return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
 948         }
 949
 950         case DEMUX_SET_NEXT_DEMUX_TIME:
 951         case DEMUX_SET_GROUP:
 952             return VLC_EGENERIC;
 953
 954         default:
 955             msg_Warn( p_demux, "control query %u unimplemented", i_query );
 956             return VLC_EGENERIC;
 957     }
 958 }
 959
 960 /*****************************************************************************
 961  * Close: frees unused data
 962  *****************************************************************************/
 963 static void Close ( vlc_object_t * p_this )
 964 {
 965     unsigned int i_track;
 966     demux_t *  p_demux = (demux_t *)p_this;
 967     demux_sys_t *p_sys = p_demux->p_sys;
 968
 969     msg_Dbg( p_demux, "freeing all memory" );
 970
 971     MP4_BoxFree( p_demux->s, p_sys->p_root );
 972     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 973     {
 974         MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
 975     }
 976     FREENULL( p_sys->track );
 977
 978     if( p_sys->p_title )
 979         vlc_input_title_Delete( p_sys->p_title );
 980
 981     free( p_sys );
 982 }
 983
 984
 985
 986 /****************************************************************************
 987  * Local functions, specific to vlc
 988  ****************************************************************************/
 989
 990 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 991 static int TrackCreateChunksIndex( demux_t *p_demux,
 992                                    mp4_track_t *p_demux_track )
 993 {
 994     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 995     MP4_Box_t *p_stsc;
 996
 997     unsigned int i_chunk;
 998     unsigned int i_index, i_last;
 999
1000     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1001           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1002         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1003     {
1004         return( VLC_EGENERIC );
1005     }
1006
1007     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
1008     if( !p_demux_track->i_chunk_count )
1009     {
1010         msg_Warn( p_demux, "no chunk defined" );
1011         return( VLC_EGENERIC );
1012     }
1013     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1014                                    sizeof( mp4_chunk_t ) );
1015
1016     /* first we read chunk offset */
1017     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1018     {
1019         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1020
1021         ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
1022
1023         ck->i_first_dts = 0;
1024         ck->p_sample_count_dts = NULL;
1025         ck->p_sample_delta_dts = NULL;
1026         ck->p_sample_count_pts = NULL;
1027         ck->p_sample_offset_pts = NULL;
1028     }
1029
1030     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1031         to be used for the sample XXX begin to 1
1032         We construct it begining at the end */
1033     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1034     i_index = p_stsc->data.p_stsc->i_entry_count;
1035     if( !i_index )
1036     {
1037         msg_Warn( p_demux, "cannot read chunk table or table empty" );
1038         return( VLC_EGENERIC );
1039     }
1040
1041     while( i_index-- )
1042     {
1043         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1044              i_chunk < i_last; i_chunk++ )
1045         {
1046             p_demux_track->chunk[i_chunk].i_sample_description_index =
1047                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
1048             p_demux_track->chunk[i_chunk].i_sample_count =
1049                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
1050         }
1051         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1052     }
1053
1054     p_demux_track->chunk[0].i_sample_first = 0;
1055     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1056     {
1057         p_demux_track->chunk[i_chunk].i_sample_first =
1058             p_demux_track->chunk[i_chunk-1].i_sample_first +
1059                 p_demux_track->chunk[i_chunk-1].i_sample_count;
1060     }
1061
1062     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1063              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1064
1065     return VLC_SUCCESS;
1066 }
1067
1068 static int TrackCreateSamplesIndex( demux_t *p_demux,
1069                                     mp4_track_t *p_demux_track )
1070 {
1071     MP4_Box_t *p_box;
1072     MP4_Box_data_stsz_t *stsz;
1073     MP4_Box_data_stts_t *stts;
1074     /* TODO use also stss and stsh table for seeking */
1075     /* FIXME use edit table */
1076     int64_t i_sample;
1077     int64_t i_chunk;
1078
1079     int64_t i_index;
1080     int64_t i_index_sample_used;
1081
1082     int64_t i_last_dts;
1083
1084     /* Find stsz
1085      *  Gives the sample size for each samples. There is also a stz2 table
1086      *  (compressed form) that we need to implement TODO */
1087     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1088     if( !p_box )
1089     {
1090         /* FIXME and stz2 */
1091         msg_Warn( p_demux, "cannot find STSZ box" );
1092         return VLC_EGENERIC;
1093     }
1094     stsz = p_box->data.p_stsz;
1095
1096     /* Find stts
1097      *  Gives mapping between sample and decoding time
1098      */
1099     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1100     if( !p_box )
1101     {
1102         msg_Warn( p_demux, "cannot find STTS box" );
1103         return VLC_EGENERIC;
1104     }
1105     stts = p_box->data.p_stts;
1106
1107     /* Use stsz table to create a sample number -> sample size table */
1108     p_demux_track->i_sample_count = stsz->i_sample_count;
1109     if( stsz->i_sample_size )
1110     {
1111         /* 1: all sample have the same size, so no need to construct a table */
1112         p_demux_track->i_sample_size = stsz->i_sample_size;
1113         p_demux_track->p_sample_size = NULL;
1114     }
1115     else
1116     {
1117         /* 2: each sample can have a different size */
1118         p_demux_track->i_sample_size = 0;
1119         p_demux_track->p_sample_size =
1120             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1121
1122         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1123         {
1124             p_demux_track->p_sample_size[i_sample] =
1125                     stsz->i_entry_size[i_sample];
1126         }
1127     }
1128
1129     /* Use stts table to create a sample number -> dts table.
1130      * XXX: if we don't want to waste too much memory, we can't expand
1131      *  the box! so each chunk will contain an "extract" of this table
1132      *  for fast research (problem with raw stream where a sample is sometime
1133      *  just channels*bits_per_sample/8 */
1134
1135     i_last_dts = 0;
1136     i_index = 0; i_index_sample_used = 0;
1137     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1138     {
1139         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1140         int64_t i_entry, i_sample_count, i;
1141
1142         /* save last dts */
1143         ck->i_first_dts = i_last_dts;
1144
1145         /* count how many entries are needed for this chunk
1146          * for p_sample_delta_dts and p_sample_count_dts */
1147         i_sample_count = ck->i_sample_count;
1148
1149         i_entry = 0;
1150         while( i_sample_count > 0 )
1151         {
1152             i_sample_count -= stts->i_sample_count[i_index+i_entry];
1153             /* don't count already used sample in this entry */
1154             if( i_entry == 0 )
1155                 i_sample_count += i_index_sample_used;
1156
1157             i_entry++;
1158         }
1159
1160         /* allocate them */
1161         ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1162         ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1163
1164         /* now copy */
1165         i_sample_count = ck->i_sample_count;
1166         for( i = 0; i < i_entry; i++ )
1167         {
1168             int64_t i_used;
1169             int64_t i_rest;
1170
1171             i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1172
1173             i_used = __MIN( i_rest, i_sample_count );
1174
1175             i_index_sample_used += i_used;
1176             i_sample_count -= i_used;
1177
1178             ck->p_sample_count_dts[i] = i_used;
1179             ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1180
1181             i_last_dts += i_used * ck->p_sample_delta_dts[i];
1182
1183             if( i_index_sample_used >= stts->i_sample_count[i_index] )
1184             {
1185                 i_index++;
1186                 i_index_sample_used = 0;
1187             }
1188         }
1189     }
1190
1191     /* Find ctts
1192      *  Gives the delta between decoding time (dts) and composition table (pts)
1193      */
1194     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1195     if( p_box )
1196     {
1197         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1198
1199         msg_Warn( p_demux, "CTTS table" );
1200
1201         /* Create pts-dts table per chunk */
1202         i_index = 0; i_index_sample_used = 0;
1203         for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1204         {
1205             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1206             int64_t i_entry, i_sample_count, i;
1207
1208             /* count how many entries are needed for this chunk
1209              * for p_sample_delta_dts and p_sample_count_dts */
1210             i_sample_count = ck->i_sample_count;
1211
1212             i_entry = 0;
1213             while( i_sample_count > 0 )
1214             {
1215                 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1216
1217                 /* don't count already used sample in this entry */
1218                 if( i_entry == 0 )
1219                     i_sample_count += i_index_sample_used;
1220
1221                 i_entry++;
1222             }
1223
1224             /* allocate them */
1225             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1226             ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1227
1228             /* now copy */
1229             i_sample_count = ck->i_sample_count;
1230             for( i = 0; i < i_entry; i++ )
1231             {
1232                 int64_t i_used;
1233                 int64_t i_rest;
1234
1235                 i_rest = ctts->i_sample_count[i_index] -
1236                     i_index_sample_used;
1237
1238                 i_used = __MIN( i_rest, i_sample_count );
1239
1240                 i_index_sample_used += i_used;
1241                 i_sample_count -= i_used;
1242
1243                 ck->p_sample_count_pts[i] = i_used;
1244                 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1245
1246                 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1247                 {
1248                     i_index++;
1249                     i_index_sample_used = 0;
1250                 }
1251             }
1252         }
1253     }
1254
1255     msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1256              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1257              i_last_dts / p_demux_track->i_timescale );
1258
1259     return VLC_SUCCESS;
1260 }
1261
1262 /*
1263  * TrackCreateES:
1264  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1265  */
1266 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1267                           unsigned int i_chunk, es_out_id_t **pp_es )
1268 {
1269     MP4_Box_t   *p_sample;
1270     MP4_Box_t   *p_esds;
1271     MP4_Box_t   *p_box;
1272
1273     *pp_es = NULL;
1274
1275     if( !p_track->chunk[i_chunk].i_sample_description_index )
1276     {
1277         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1278                   p_track->i_track_ID );
1279         return VLC_EGENERIC;
1280     }
1281
1282     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
1283                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1284
1285     if( !p_sample ||
1286         ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1287     {
1288         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1289                   p_track->i_track_ID );
1290         return VLC_EGENERIC;
1291     }
1292
1293     p_track->p_sample = p_sample;
1294
1295     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1296     {
1297         MP4_Box_data_sample_soun_t *p_soun;
1298
1299         p_soun = p_sample->data.p_sample_soun;
1300
1301         if( p_soun->i_qt_version == 0 )
1302         {
1303             switch( p_sample->i_type )
1304             {
1305                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1306                     p_soun->i_qt_version = 1;
1307                     p_soun->i_sample_per_packet = 64;
1308                     p_soun->i_bytes_per_packet  = 34;
1309                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
1310                     p_soun->i_bytes_per_sample  = 2;
1311                     break;
1312                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1313                     p_soun->i_qt_version = 1;
1314                     p_soun->i_sample_per_packet = 6;
1315                     p_soun->i_bytes_per_packet  = 2;
1316                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1317                     p_soun->i_bytes_per_sample  = 2;
1318                     break;
1319                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1320                     p_soun->i_qt_version = 1;
1321                     p_soun->i_sample_per_packet = 12;
1322                     p_soun->i_bytes_per_packet  = 2;
1323                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
1324                     p_soun->i_bytes_per_sample  = 2;
1325                     break;
1326                 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1327                 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1328                     p_soun->i_samplesize = 8;
1329                     break;
1330                 default:
1331                     break;
1332             }
1333
1334         }
1335         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1336         {
1337             p_soun->i_qt_version = 0;
1338         }
1339     }
1340
1341
1342     /* It's a little ugly but .. there are special cases */
1343     switch( p_sample->i_type )
1344     {
1345         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1346         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1347             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1348             break;
1349
1350         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1351             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1352
1353             /* Buggy files workaround */
1354             if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1355                 p_sample->data.p_sample_soun->i_sampleratehi) )
1356             {
1357                 MP4_Box_data_sample_soun_t *p_soun =
1358                     p_sample->data.p_sample_soun;
1359
1360                 msg_Warn( p_demux, "i_timescale ("I64Fu") != i_sampleratehi "
1361                           "(%u), making both equal (report any problem).",
1362                           p_track->i_timescale, p_soun->i_sampleratehi );
1363
1364                 if( p_soun->i_sampleratehi )
1365                     p_track->i_timescale = p_soun->i_sampleratehi;
1366                 else
1367                     p_soun->i_sampleratehi = p_track->i_timescale;
1368             }
1369             break;
1370
1371         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1372             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1373             break;
1374
1375         case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1376         case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1377             p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1378             /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1379             /* FIXME UTF-8 doesn't work here ? */
1380             p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1381             break;
1382
1383         case VLC_FOURCC('y','v','1','2'):
1384             p_track->fmt.i_codec = VLC_FOURCC('Y','V','1','2');
1385             break;
1386         case VLC_FOURCC('y','u','v','2'):
1387             p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
1388             break;
1389
1390         default:
1391             p_track->fmt.i_codec = p_sample->i_type;
1392             break;
1393     }
1394
1395     /* now see if esds is present and if so create a data packet
1396         with decoder_specific_info  */
1397 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1398     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1399           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1400         ( p_esds->data.p_esds )&&
1401         ( p_decconfig ) )
1402     {
1403         /* First update information based on i_objectTypeIndication */
1404         switch( p_decconfig->i_objectTypeIndication )
1405         {
1406             case( 0x20 ): /* MPEG4 VIDEO */
1407                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1408                 break;
1409             case( 0x40):
1410                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1411                 break;
1412             case( 0x60):
1413             case( 0x61):
1414             case( 0x62):
1415             case( 0x63):
1416             case( 0x64):
1417             case( 0x65): /* MPEG2 video */
1418                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1419                 break;
1420             /* Theses are MPEG2-AAC */
1421             case( 0x66): /* main profile */
1422             case( 0x67): /* Low complexity profile */
1423             case( 0x68): /* Scaleable Sampling rate profile */
1424                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1425                 break;
1426             /* true MPEG 2 audio */
1427             case( 0x69):
1428                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1429                 break;
1430             case( 0x6a): /* MPEG1 video */
1431                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1432                 break;
1433             case( 0x6b): /* MPEG1 audio */
1434                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1435                 break;
1436             case( 0x6c ): /* jpeg */
1437                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1438                 break;
1439
1440             /* Private ID */
1441             case( 0xe0 ): /* NeroDigital: dvd subs */
1442                 if( p_track->fmt.i_cat == SPU_ES )
1443                 {
1444                     p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1445                     if( p_track->i_width > 0 )
1446                         p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1447                     if( p_track->i_height > 0 )
1448                         p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1449                     break;
1450                 }
1451             /* Fallback */
1452             default:
1453                 /* Unknown entry, but don't touch i_fourcc */
1454                 msg_Warn( p_demux,
1455                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1456                           p_decconfig->i_objectTypeIndication,
1457                           p_track->i_track_ID );
1458                 break;
1459         }
1460         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1461         if( p_track->fmt.i_extra > 0 )
1462         {
1463             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1464             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1465                     p_track->fmt.i_extra );
1466         }
1467     }
1468     else
1469     {
1470         switch( p_sample->i_type )
1471         {
1472             /* qt decoder, send the complete chunk */
1473             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1474             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1475             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1476             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1477             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1478                 p_track->fmt.i_extra =
1479                     p_sample->data.p_sample_vide->i_qt_image_description;
1480                 if( p_track->fmt.i_extra > 0 )
1481                 {
1482                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1483                     memcpy( p_track->fmt.p_extra,
1484                             p_sample->data.p_sample_vide->p_qt_image_description,
1485                             p_track->fmt.i_extra);
1486                 }
1487                 break;
1488             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1489             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1490             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1491             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1492             case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1493                 p_track->fmt.i_extra =
1494                     p_sample->data.p_sample_soun->i_qt_description;
1495                 if( p_track->fmt.i_extra > 0 )
1496                 {
1497                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1498                     memcpy( p_track->fmt.p_extra,
1499                             p_sample->data.p_sample_soun->p_qt_description,
1500                             p_track->fmt.i_extra);
1501                 }
1502                 break;
1503
1504             /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1505             case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1506             {
1507                 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1508
1509                 if( p_avcC )
1510                 {
1511                     p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1512                     p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1513                     memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1514                             p_track->fmt.i_extra );
1515                 }
1516                 else
1517                 {
1518                     msg_Err( p_demux, "missing avcC" );
1519                 }
1520                 break;
1521             }
1522
1523             default:
1524                 break;
1525         }
1526     }
1527
1528 #undef p_decconfig
1529
1530     /* some last initialisation */
1531     switch( p_track->fmt.i_cat )
1532     {
1533     case( VIDEO_ES ):
1534         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1535         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1536         p_track->fmt.video.i_bits_per_pixel =
1537             p_sample->data.p_sample_vide->i_depth;
1538
1539         /* fall on display size */
1540         if( p_track->fmt.video.i_width <= 0 )
1541             p_track->fmt.video.i_width = p_track->i_width;
1542         if( p_track->fmt.video.i_height <= 0 )
1543             p_track->fmt.video.i_height = p_track->i_height;
1544
1545         /* Find out apect ratio from display size */
1546         if( p_track->i_width > 0 && p_track->i_height > 0 &&
1547             /* Work-around buggy muxed files */
1548             p_sample->data.p_sample_vide->i_width != p_track->i_width )
1549             p_track->fmt.video.i_aspect =
1550                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1551
1552         /* Support for cropping (eg. in H263 files) */
1553         p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1554         p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1555
1556         /* Frame rate */
1557         p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1558         p_track->fmt.video.i_frame_rate_base = 1;
1559
1560         if( p_track->fmt.video.i_frame_rate &&
1561             (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1562             p_box->data.p_stts->i_entry_count >= 1 )
1563         {
1564             p_track->fmt.video.i_frame_rate_base =
1565                 p_box->data.p_stts->i_sample_delta[0];
1566         }
1567
1568         break;
1569
1570     case( AUDIO_ES ):
1571         p_track->fmt.audio.i_channels =
1572             p_sample->data.p_sample_soun->i_channelcount;
1573         p_track->fmt.audio.i_rate =
1574             p_sample->data.p_sample_soun->i_sampleratehi;
1575         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1576             p_sample->data.p_sample_soun->i_sampleratehi *
1577                 p_sample->data.p_sample_soun->i_samplesize;
1578         p_track->fmt.audio.i_bitspersample =
1579             p_sample->data.p_sample_soun->i_samplesize;
1580         break;
1581
1582     default:
1583         break;
1584     }
1585
1586     *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1587
1588     return VLC_SUCCESS;
1589 }
1590
1591 /* given a time it return sample/chunk
1592  * it also update elst field of the track
1593  */
1594 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1595                                    int64_t i_start, uint32_t *pi_chunk,
1596                                    uint32_t *pi_sample )
1597 {
1598     demux_sys_t *p_sys = p_demux->p_sys;
1599     MP4_Box_t   *p_stss;
1600     uint64_t     i_dts;
1601     unsigned int i_sample;
1602     unsigned int i_chunk;
1603     int          i_index;
1604
1605     /* FIXME see if it's needed to check p_track->i_chunk_count */
1606     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1607     {
1608         return( VLC_EGENERIC );
1609     }
1610
1611     /* handle elst (find the correct one) */
1612     MP4_TrackSetELST( p_demux, p_track, i_start );
1613     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1614     {
1615         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1616         int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1617
1618         /* now calculate i_start for this elst */
1619         /* offset */
1620         i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1621         if( i_start < 0 )
1622         {
1623             *pi_chunk = 0;
1624             *pi_sample= 0;
1625
1626             return VLC_SUCCESS;
1627         }
1628         /* to track time scale */
1629         i_start  = i_start * p_track->i_timescale / (int64_t)1000000;
1630         /* add elst offset */
1631         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1632              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1633             elst->i_media_time[p_track->i_elst] > 0 )
1634         {
1635             i_start += elst->i_media_time[p_track->i_elst];
1636         }
1637
1638         msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1639                  "ms (track)", p_track->i_elst,
1640                  i_mvt * 1000 / p_sys->i_timescale,
1641                  i_start * 1000 / p_track->i_timescale );
1642     }
1643     else
1644     {
1645         /* convert absolute time to in timescale unit */
1646         i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1647     }
1648
1649     /* we start from sample 0/chunk 0, hope it won't take too much time */
1650     /* *** find good chunk *** */
1651     for( i_chunk = 0; ; i_chunk++ )
1652     {
1653         if( i_chunk + 1 >= p_track->i_chunk_count )
1654         {
1655             /* at the end and can't check if i_start in this chunk,
1656                it will be check while searching i_sample */
1657             i_chunk = p_track->i_chunk_count - 1;
1658             break;
1659         }
1660
1661         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1662             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1663         {
1664             break;
1665         }
1666     }
1667
1668     /* *** find sample in the chunk *** */
1669     i_sample = p_track->chunk[i_chunk].i_sample_first;
1670     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1671     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1672     {
1673         if( i_dts +
1674             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1675             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1676         {
1677             i_dts    +=
1678                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1679                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1680
1681             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1682             i_index++;
1683         }
1684         else
1685         {
1686             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1687             {
1688                 break;
1689             }
1690             i_sample += ( i_start - i_dts ) /
1691                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1692             break;
1693         }
1694     }
1695
1696     if( i_sample >= p_track->i_sample_count )
1697     {
1698         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1699                   "(seeking too far) chunk=%d sample=%d",
1700                   p_track->i_track_ID, i_chunk, i_sample );
1701         return( VLC_EGENERIC );
1702     }
1703
1704
1705     /* *** Try to find nearest sync points *** */
1706     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1707     {
1708         unsigned int i_index;
1709         msg_Dbg( p_demux,
1710                     "track[Id 0x%x] using Sync Sample Box (stss)",
1711                     p_track->i_track_ID );
1712         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1713         {
1714             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1715             {
1716                 if( i_index > 0 )
1717                 {
1718                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1719                             i_sample,
1720                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1721                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1722                     /* new i_sample is less than old so i_chunk can only decreased */
1723                     while( i_chunk > 0 &&
1724                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1725                     {
1726                         i_chunk--;
1727                     }
1728                 }
1729                 else
1730                 {
1731                     msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1732                             i_sample,
1733                             p_stss->data.p_stss->i_sample_number[i_index] );
1734                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1735                     /* new i_sample is more than old so i_chunk can only increased */
1736                     while( i_chunk < p_track->i_chunk_count - 1 &&
1737                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1738                              p_track->chunk[i_chunk].i_sample_count )
1739                     {
1740                         i_chunk++;
1741                     }
1742                 }
1743                 break;
1744             }
1745         }
1746     }
1747     else
1748     {
1749         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1750                  "Sample Box (stss)", p_track->i_track_ID );
1751     }
1752
1753     *pi_chunk  = i_chunk;
1754     *pi_sample = i_sample;
1755
1756     return VLC_SUCCESS;
1757 }
1758
1759 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1760                                  unsigned int i_chunk, unsigned int i_sample )
1761 {
1762     vlc_bool_t b_reselect = VLC_FALSE;
1763
1764     /* now see if actual es is ok */
1765     if( (p_track->i_chunk >= p_track->i_chunk_count - 1) ||
1766         (p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1767             p_track->chunk[i_chunk].i_sample_description_index) )
1768     {
1769         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1770                   p_track->i_track_ID );
1771
1772         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1773                         p_track->p_es, &b_reselect );
1774
1775         es_out_Del( p_demux->out, p_track->p_es );
1776
1777         p_track->p_es = NULL;
1778
1779         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1780         {
1781             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1782                      p_track->i_track_ID );
1783
1784             p_track->b_ok       = VLC_FALSE;
1785             p_track->b_selected = VLC_FALSE;
1786             return VLC_EGENERIC;
1787         }
1788     }
1789
1790     /* select again the new decoder */
1791     if( b_reselect )
1792     {
1793         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1794     }
1795
1796     p_track->i_chunk    = i_chunk;
1797     p_track->i_sample   = i_sample;
1798
1799     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1800 }
1801
1802 /****************************************************************************
1803  * MP4_TrackCreate:
1804  ****************************************************************************
1805  * Parse track information and create all needed data to run a track
1806  * If it succeed b_ok is set to 1 else to 0
1807  ****************************************************************************/
1808 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1809                              MP4_Box_t *p_box_trak )
1810 {
1811     demux_sys_t *p_sys = p_demux->p_sys;
1812
1813     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1814     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1815     MP4_Box_t *p_elst;
1816
1817     MP4_Box_t *p_mdhd;
1818     MP4_Box_t *p_udta;
1819     MP4_Box_t *p_hdlr;
1820
1821     MP4_Box_t *p_vmhd;
1822     MP4_Box_t *p_smhd;
1823
1824     MP4_Box_t *p_drms;
1825
1826     unsigned int i;
1827     char language[4];
1828
1829     /* hint track unsupported */
1830
1831     /* set default value (-> track unusable) */
1832     p_track->b_ok       = VLC_FALSE;
1833     p_track->b_enable   = VLC_FALSE;
1834     p_track->b_selected = VLC_FALSE;
1835
1836     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1837
1838     if( !p_tkhd )
1839     {
1840         return;
1841     }
1842
1843     /* do we launch this track by default ? */
1844     p_track->b_enable =
1845         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1846
1847     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1848     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1849     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1850
1851     if( p_tref )
1852     {
1853 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1854     }
1855
1856     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1857     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1858
1859     if( ( !p_mdhd )||( !p_hdlr ) )
1860     {
1861         return;
1862     }
1863
1864     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1865
1866     for( i = 0; i < 3; i++ )
1867     {
1868         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1869     }
1870     language[3] = '\0';
1871
1872     switch( p_hdlr->data.p_hdlr->i_handler_type )
1873     {
1874         case( FOURCC_soun ):
1875             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1876             {
1877                 return;
1878             }
1879             p_track->fmt.i_cat = AUDIO_ES;
1880             break;
1881
1882         case( FOURCC_vide ):
1883             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1884             {
1885                 return;
1886             }
1887             p_track->fmt.i_cat = VIDEO_ES;
1888             break;
1889
1890         case( FOURCC_text ):
1891         case( FOURCC_subp ):
1892         case( FOURCC_tx3g ):
1893             p_track->fmt.i_cat = SPU_ES;
1894             break;
1895
1896         default:
1897             return;
1898     }
1899
1900     p_track->i_elst = 0;
1901     p_track->i_elst_time = 0;
1902     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1903     {
1904         MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1905         unsigned int i;
1906
1907         msg_Warn( p_demux, "elst box found" );
1908         for( i = 0; i < elst->i_entry_count; i++ )
1909         {
1910             msg_Dbg( p_demux, "   - [%d] duration="I64Fd"ms media time="I64Fd
1911                      "ms) rate=%d.%d", i,
1912                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1913                      elst->i_media_time[i] >= 0 ?
1914                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
1915                      I64C(-1),
1916                      elst->i_media_rate_integer[i],
1917                      elst->i_media_rate_fraction[i] );
1918         }
1919     }
1920
1921
1922 /*  TODO
1923     add support for:
1924     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1925 */
1926     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1927         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1928     {
1929         return;
1930     }
1931
1932     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1933     p_track->b_drms = p_drms != NULL;
1934     p_track->p_drms = p_track->b_drms ?
1935         p_drms->data.p_sample_soun->p_drms : NULL;
1936
1937     /* Set language */
1938     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1939     {
1940         p_track->fmt.psz_language = strdup( language );
1941     }
1942
1943     p_udta = MP4_BoxGet( p_box_trak, "udta" );
1944     if( p_udta )
1945     {
1946         MP4_Box_t *p_0xa9xxx;
1947         for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1948                  p_0xa9xxx = p_0xa9xxx->p_next )
1949         {
1950             switch( p_0xa9xxx->i_type )
1951             {
1952                 case FOURCC_0xa9nam:
1953                     p_track->fmt.psz_description =
1954                         strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1955                     break;
1956             }
1957         }
1958     }
1959
1960     /* Create chunk index table and sample index table */
1961     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
1962         TrackCreateSamplesIndex( p_demux, p_track ) )
1963     {
1964         return; /* cannot create chunks index */
1965     }
1966
1967     p_track->i_chunk  = 0;
1968     p_track->i_sample = 0;
1969
1970     /* now create es */
1971     if( TrackCreateES( p_demux,
1972                        p_track, p_track->i_chunk,
1973                        &p_track->p_es ) )
1974     {
1975         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1976                  p_track->i_track_ID );
1977         return;
1978     }
1979
1980 #if 0
1981     {
1982         int i;
1983         for( i = 0; i < p_track->i_chunk_count; i++ )
1984         {
1985             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1986                      i, p_track->chunk[i].i_sample_count,
1987                      p_track->chunk[i].i_first_dts );
1988
1989         }
1990     }
1991 #endif
1992     p_track->b_ok = VLC_TRUE;
1993 }
1994
1995 /****************************************************************************
1996  * MP4_TrackDestroy:
1997  ****************************************************************************
1998  * Destroy a track created by MP4_TrackCreate.
1999  ****************************************************************************/
2000 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
2001 {
2002     unsigned int i_chunk;
2003
2004     p_track->b_ok = VLC_FALSE;
2005     p_track->b_enable   = VLC_FALSE;
2006     p_track->b_selected = VLC_FALSE;
2007
2008     es_format_Clean( &p_track->fmt );
2009
2010     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2011     {
2012         if( p_track->chunk )
2013         {
2014            FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2015            FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2016
2017            FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2018            FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2019         }
2020     }
2021     FREENULL( p_track->chunk );
2022
2023     if( !p_track->i_sample_size )
2024     {
2025         FREENULL( p_track->p_sample_size );
2026     }
2027 }
2028
2029 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2030                             mtime_t i_start )
2031 {
2032     if( !p_track->b_ok )
2033     {
2034         return VLC_EGENERIC;
2035     }
2036
2037     if( p_track->b_selected )
2038     {
2039         msg_Warn( p_demux, "track[Id 0x%x] already selected",
2040                   p_track->i_track_ID );
2041         return VLC_SUCCESS;
2042     }
2043
2044     return MP4_TrackSeek( p_demux, p_track, i_start );
2045 }
2046
2047 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2048 {
2049     if( !p_track->b_ok )
2050     {
2051         return;
2052     }
2053
2054     if( !p_track->b_selected )
2055     {
2056         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2057                   p_track->i_track_ID );
2058         return;
2059     }
2060     if( p_track->p_es )
2061     {
2062         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2063                         p_track->p_es, VLC_FALSE );
2064     }
2065
2066     p_track->b_selected = VLC_FALSE;
2067 }
2068
2069 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2070                           mtime_t i_start )
2071 {
2072     uint32_t i_chunk;
2073     uint32_t i_sample;
2074
2075     if( !p_track->b_ok )
2076     {
2077         return( VLC_EGENERIC );
2078     }
2079
2080     p_track->b_selected = VLC_FALSE;
2081
2082     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2083                                 &i_chunk, &i_sample ) )
2084     {
2085         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2086                   p_track->i_track_ID );
2087         return( VLC_EGENERIC );
2088     }
2089
2090     p_track->b_selected = VLC_TRUE;
2091
2092     if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2093         VLC_SUCCESS )
2094     {
2095         p_track->b_selected = VLC_TRUE;
2096
2097         es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
2098                         p_track->p_es, i_start );
2099     }
2100
2101     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2102 }
2103
2104
2105 /*
2106  * 3 types: for audio
2107  *
2108  */
2109 #define QT_V0_MAX_SAMPLES 1024
2110 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2111 {
2112     int i_size;
2113     MP4_Box_data_sample_soun_t *p_soun;
2114
2115     if( p_track->i_sample_size == 0 )
2116     {
2117         /* most simple case */
2118         return p_track->p_sample_size[p_track->i_sample];
2119     }
2120     if( p_track->fmt.i_cat != AUDIO_ES )
2121     {
2122         return p_track->i_sample_size;
2123     }
2124
2125     p_soun = p_track->p_sample->data.p_sample_soun;
2126
2127     if( p_soun->i_qt_version == 1 )
2128     {
2129         i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2130             p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2131     }
2132     else if( p_track->i_sample_size > 256 )
2133     {
2134         /* We do that so we don't read too much data
2135          * (in this case we are likely dealing with compressed data) */
2136         i_size = p_track->i_sample_size;
2137     }
2138     else
2139     {
2140         /* Read a bunch of samples at once */
2141         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2142             ( p_track->i_sample -
2143               p_track->chunk[p_track->i_chunk].i_sample_first );
2144
2145         i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2146         i_size = i_samples * p_track->i_sample_size;
2147     }
2148
2149     //fprintf( stderr, "size=%d\n", i_size );
2150     return i_size;
2151 }
2152
2153 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2154 {
2155     unsigned int i_sample;
2156     uint64_t i_pos;
2157
2158     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2159
2160     if( p_track->i_sample_size )
2161     {
2162         MP4_Box_data_sample_soun_t *p_soun =
2163             p_track->p_sample->data.p_sample_soun;
2164
2165         if( p_soun->i_qt_version == 0 )
2166         {
2167             i_pos += ( p_track->i_sample -
2168                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
2169                      p_track->i_sample_size;
2170         }
2171         else
2172         {
2173             /* we read chunk by chunk */
2174             i_pos += 0;
2175         }
2176     }
2177     else
2178     {
2179         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2180              i_sample < p_track->i_sample; i_sample++ )
2181         {
2182             i_pos += p_track->p_sample_size[i_sample];
2183         }
2184     }
2185
2186     return i_pos;
2187 }
2188
2189 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2190 {
2191     if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2192     {
2193         MP4_Box_data_sample_soun_t *p_soun;
2194
2195         p_soun = p_track->p_sample->data.p_sample_soun;
2196
2197         if( p_soun->i_qt_version == 1 )
2198         {
2199             /* chunk by chunk */
2200             p_track->i_sample =
2201                 p_track->chunk[p_track->i_chunk].i_sample_first +
2202                 p_track->chunk[p_track->i_chunk].i_sample_count;
2203         }
2204         else if( p_track->i_sample_size > 256 )
2205         {
2206             /* We do that so we don't read too much data
2207              * (in this case we are likely dealing with compressed data) */
2208             p_track->i_sample += 1;
2209         }
2210         else
2211         {
2212             /* FIXME */
2213             p_track->i_sample += QT_V0_MAX_SAMPLES;
2214             if( p_track->i_sample >
2215                 p_track->chunk[p_track->i_chunk].i_sample_first +
2216                 p_track->chunk[p_track->i_chunk].i_sample_count )
2217             {
2218                 p_track->i_sample =
2219                     p_track->chunk[p_track->i_chunk].i_sample_first +
2220                     p_track->chunk[p_track->i_chunk].i_sample_count;
2221             }
2222         }
2223     }
2224     else
2225     {
2226         p_track->i_sample++;
2227     }
2228
2229     if( p_track->i_sample >= p_track->i_sample_count )
2230         return VLC_EGENERIC;
2231
2232     /* Have we changed chunk ? */
2233     if( p_track->i_sample >=
2234             p_track->chunk[p_track->i_chunk].i_sample_first +
2235             p_track->chunk[p_track->i_chunk].i_sample_count )
2236     {
2237         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2238                                   p_track->i_sample ) )
2239         {
2240             msg_Warn( p_demux, "track[0x%x] will be disabled "
2241                       "(cannot restart decoder)", p_track->i_track_ID );
2242             MP4_TrackUnselect( p_demux, p_track );
2243             return VLC_EGENERIC;
2244         }
2245     }
2246
2247     /* Have we changed elst */
2248     if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2249     {
2250         demux_sys_t *p_sys = p_demux->p_sys;
2251         MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2252         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2253                         p_sys->i_timescale / (int64_t)1000000;
2254
2255         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2256             i_mvt >= p_track->i_elst_time +
2257                      elst->i_segment_duration[p_track->i_elst] )
2258         {
2259             MP4_TrackSetELST( p_demux, p_track,
2260                               MP4_TrackGetDTS( p_demux, p_track ) );
2261         }
2262     }
2263
2264     return VLC_SUCCESS;
2265 }
2266
2267 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2268                               int64_t i_time )
2269 {
2270     demux_sys_t *p_sys = p_demux->p_sys;
2271     int         i_elst_last = tk->i_elst;
2272
2273     /* handle elst (find the correct one) */
2274     tk->i_elst      = 0;
2275     tk->i_elst_time = 0;
2276     if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2277     {
2278         MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2279         int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2280
2281         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2282         {
2283             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2284
2285             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2286             {
2287                 break;
2288             }
2289             tk->i_elst_time += i_dur;
2290         }
2291
2292         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2293         {
2294             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2295             tk->i_elst = elst->i_entry_count - 1;
2296             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2297         }
2298
2299         if( elst->i_media_time[tk->i_elst] < 0 )
2300         {
2301             /* track offset */
2302             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2303         }
2304     }
2305     if( i_elst_last != tk->i_elst )
2306     {
2307         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2308     }
2309 }
2310
2311 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
2312                             playlist_item_t **pp_item )
2313 {
2314     input_thread_t *p_input = (input_thread_t *)vlc_object_find( p_demux, VLC_OBJECT_INPUT, FIND_PARENT );
2315     vlc_bool_t b_play = var_CreateGetBool( p_demux, "playlist-autostart" );
2316
2317     *pp_item = NULL;
2318     if( p_input )
2319     {
2320         if( b_play && p_playlist->status.p_item &&
2321             p_playlist->status.p_item->p_input == input_GetItem(p_input) )
2322         {
2323             msg_Dbg( p_playlist, "starting playlist playback" );
2324             *pp_item = p_playlist->status.p_item;
2325             b_play = VLC_TRUE;
2326         }
2327         else
2328         {
2329             input_item_t *p_current = input_GetItem( p_input );
2330
2331             *pp_item = playlist_ItemGetByInput( p_playlist, p_current, VLC_FALSE );
2332             if( !*pp_item )
2333                 msg_Dbg( p_playlist, "unable to find item in playlist");
2334
2335             msg_Dbg( p_playlist, "not starting playlist playback");
2336             b_play = VLC_FALSE;
2337         }
2338         vlc_object_release( p_input );
2339     }
2340     return b_play;
2341 }
2342
2343