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 VideoLAN
   5  * $Id: mp4.c,v 1.54 2004/01/18 18:31:50 fenrir Exp $
   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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #include <stdlib.h>                                      /* malloc(), free() */
  27
  28 #include <vlc/vlc.h>
  29 #include <vlc/input.h>
  30 #include <vlc_playlist.h>
  31 #include "iso_lang.h"
  32
  33 #include "libmp4.h"
  34 #include "mp4.h"
  35 #include "drms.h"
  36
  37 /*****************************************************************************
  38  * Module descriptor
  39  *****************************************************************************/
  40 static int  Open ( vlc_object_t * );
  41 static void Close( vlc_object_t * );
  42
  43 vlc_module_begin();
  44     set_description( _("MP4 demuxer") );
  45     set_capability( "demux", 242 );
  46     set_callbacks( Open, Close );
  47 vlc_module_end();
  48
  49 /*****************************************************************************
  50  * Local prototypes
  51  *****************************************************************************/
  52 static int    Demux   ( input_thread_t * );
  53 static int    DemuxRef( input_thread_t *p_input )
  54 {
  55     return 0;
  56 }
  57 static int   Seek     ( input_thread_t *, mtime_t );
  58 static int   Control  ( input_thread_t *, int, va_list );
  59
  60 /*****************************************************************************
  61  * Declaration of local function
  62  *****************************************************************************/
  63 static void MP4_TrackCreate ( input_thread_t *, mp4_track_t *, MP4_Box_t  *);
  64 static void MP4_TrackDestroy( input_thread_t *, mp4_track_t * );
  65
  66 static int  MP4_TrackSelect ( input_thread_t *, mp4_track_t *, mtime_t );
  67 static void MP4_TrackUnselect(input_thread_t *, mp4_track_t * );
  68
  69 static int  MP4_TrackSeek   ( input_thread_t *, mp4_track_t *, mtime_t );
  70
  71 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
  72 static int      MP4_TrackSampleSize( mp4_track_t * );
  73 static int      MP4_TrackNextSample( input_thread_t *, mp4_track_t * );
  74
  75 /* Return time in µs of a track */
  76 static inline mtime_t MP4_TrackGetPTS( mp4_track_t *p_track )
  77 {
  78     unsigned int i_sample;
  79     unsigned int i_index;
  80     uint64_t i_dts;
  81
  82     i_sample = p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first;
  83     i_dts = p_track->chunk[p_track->i_chunk].i_first_dts;
  84     i_index = 0;
  85     while( i_sample > 0 )
  86     {
  87         if( i_sample > p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index] )
  88         {
  89             i_dts += p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index] *
  90                         p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
  91             i_sample -= p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index];
  92             i_index++;
  93         }
  94         else
  95         {
  96             i_dts += i_sample *
  97                         p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
  98             i_sample = 0;
  99             break;
 100         }
 101     }
 102
 103     return (int64_t)1000000 * i_dts / p_track->i_timescale;
 104 }
 105 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 106 {
 107     return (int64_t)1000000 * p_sys->i_time / p_sys->i_timescale;
 108 }
 109
 110 static char *LanguageGetName( const char *psz_code );
 111
 112 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
 113
 114 /*****************************************************************************
 115  * Open: check file and initializes MP4 structures
 116  *****************************************************************************/
 117 static int Open( vlc_object_t * p_this )
 118 {
 119     input_thread_t  *p_input = (input_thread_t *)p_this;
 120     demux_sys_t     *p_sys;
 121
 122     uint8_t         *p_peek;
 123
 124     MP4_Box_t       *p_ftyp;
 125     MP4_Box_t       *p_rmra;
 126     MP4_Box_t       *p_mvhd;
 127     MP4_Box_t       *p_trak;
 128
 129     unsigned int    i;
 130     vlc_bool_t      b_seekable;
 131
 132     /* a little test to see if it could be a mp4 */
 133     if( stream_Peek( p_input->s, &p_peek, 8 ) < 8 )
 134     {
 135         msg_Warn( p_input, "MP4 plugin discarded (cannot peek)" );
 136         return VLC_EGENERIC;
 137     }
 138     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 139     {
 140         case FOURCC_ftyp:
 141         case FOURCC_moov:
 142         case FOURCC_foov:
 143         case FOURCC_moof:
 144         case FOURCC_mdat:
 145         case FOURCC_udta:
 146         case FOURCC_free:
 147         case FOURCC_skip:
 148         case FOURCC_wide:
 149         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 150             break;
 151          default:
 152             msg_Warn( p_input, "MP4 plugin discarded (not a valid file)" );
 153             return VLC_EGENERIC;
 154     }
 155
 156     /* I need to seek */
 157     stream_Control( p_input->s, STREAM_CAN_SEEK, &b_seekable );
 158     if( !b_seekable )
 159     {
 160         msg_Warn( p_input, "MP4 plugin discarded (unseekable)" );
 161         return VLC_EGENERIC;
 162     }
 163
 164     /*Set exported functions */
 165     p_input->pf_demux = Demux;
 166     p_input->pf_demux_control = Control;
 167
 168     /* create our structure that will contains all data */
 169     p_input->p_demux_data = p_sys = malloc( sizeof( demux_sys_t ) );
 170     memset( p_sys, 0, sizeof( demux_sys_t ) );
 171
 172     /* Now load all boxes ( except raw data ) */
 173     if( ( p_sys->p_root = MP4_BoxGetRoot( p_input ) ) == NULL )
 174     {
 175         msg_Warn( p_input, "MP4 plugin discarded (not a valid file)" );
 176         goto error;
 177     }
 178
 179     MP4_BoxDumpStructure( p_input, p_sys->p_root );
 180
 181     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 182     {
 183         switch( p_ftyp->data.p_ftyp->i_major_brand )
 184         {
 185             case( FOURCC_isom ):
 186                 msg_Dbg( p_input,
 187                          "ISO Media file (isom) version %d.",
 188                          p_ftyp->data.p_ftyp->i_minor_version );
 189                 break;
 190             default:
 191                 msg_Dbg( p_input,
 192                          "unrecognized major file specification (%4.4s).",
 193                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 194                 break;
 195         }
 196     }
 197     else
 198     {
 199         msg_Dbg( p_input, "file type box missing (assuming ISO Media file)" );
 200     }
 201
 202     /* the file need to have one moov box */
 203     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 204     {
 205         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 206
 207         if( !p_foov )
 208         {
 209             msg_Err( p_input, "MP4 plugin discarded (no moov box)" );
 210             goto error;
 211         }
 212         /* we have a free box as a moov, rename it */
 213         p_foov->i_type = FOURCC_moov;
 214     }
 215
 216     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 217     {
 218         playlist_t *p_playlist;
 219         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 220         int        i;
 221
 222         msg_Dbg( p_input, "detected playlist mov file (%d ref)", i_count );
 223
 224         p_playlist =
 225             (playlist_t *)vlc_object_find( p_input,
 226                                            VLC_OBJECT_PLAYLIST,
 227                                            FIND_ANYWHERE );
 228         if( p_playlist )
 229         {
 230             //p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
 231             for( i = 0; i < i_count; i++ )
 232             {
 233                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 234                 char      *psz_ref;
 235                 uint32_t  i_ref_type;
 236
 237                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 238                 {
 239                     continue;
 240                 }
 241                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 242
 243                 msg_Dbg( p_input, "new ref=`%s' type=%4.4s",
 244                          psz_ref, (char*)&i_ref_type );
 245
 246                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 247                 {
 248                     if( strstr( psz_ref, "qt5gateQT" ) )
 249                     {
 250                         msg_Dbg( p_input, "ignoring pseudo ref =`%s'", psz_ref );
 251                         continue;
 252                     }
 253                     if( !strncmp( psz_ref, "http://", 7 ) ||
 254                         !strncmp( psz_ref, "rtsp://", 7 ) )
 255                     {
 256                         msg_Dbg( p_input, "adding ref = `%s'", psz_ref );
 257                         playlist_Add( p_playlist, psz_ref, psz_ref,
 258                                       PLAYLIST_APPEND, PLAYLIST_END );
 259                     }
 260                     else
 261                     {
 262                         /* msg dbg relative ? */
 263                         char *psz_absolute = alloca( strlen( p_input->psz_source ) + strlen( psz_ref ) + 1);
 264                         char *end = strrchr( p_input->psz_source, '/' );
 265
 266                         if( end )
 267                         {
 268                             int i_len = end + 1 - p_input->psz_source;
 269
 270                             strncpy( psz_absolute, p_input->psz_source, i_len);
 271                             psz_absolute[i_len] = '\0';
 272                         }
 273                         else
 274                         {
 275                             strcpy( psz_absolute, "" );
 276                         }
 277                         strcat( psz_absolute, psz_ref );
 278                         msg_Dbg( p_input, "adding ref = `%s'", psz_absolute );
 279                         playlist_Add( p_playlist, psz_absolute, psz_absolute,
 280                                       PLAYLIST_APPEND, PLAYLIST_END );
 281                     }
 282                 }
 283                 else
 284                 {
 285                     msg_Err( p_input, "unknown ref type=%4.4s FIXME (send a bug report)",
 286                              (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 287                 }
 288             }
 289             vlc_object_release( p_playlist );
 290         }
 291         else
 292         {
 293             msg_Err( p_input, "can't find playlist" );
 294         }
 295     }
 296
 297     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 298     {
 299         if( !p_rmra )
 300         {
 301             msg_Err( p_input, "cannot find /moov/mvhd" );
 302             goto error;
 303         }
 304         else
 305         {
 306             msg_Warn( p_input, "cannot find /moov/mvhd (pure ref file)" );
 307             p_input->pf_demux = DemuxRef;
 308             return VLC_SUCCESS;
 309         }
 310     }
 311     else
 312     {
 313         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 314         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 315     }
 316
 317     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 318     {
 319         msg_Err( p_input, "cannot find any /moov/trak" );
 320         goto error;
 321     }
 322     msg_Dbg( p_input, "find %d track%c",
 323                         p_sys->i_tracks,
 324                         p_sys->i_tracks ? 's':' ' );
 325
 326     /*  create one program */
 327     vlc_mutex_lock( &p_input->stream.stream_lock );
 328     if( input_InitStream( p_input, 0 ) == -1)
 329     {
 330         vlc_mutex_unlock( &p_input->stream.stream_lock );
 331         msg_Err( p_input, "cannot init stream" );
 332         goto error;
 333     }
 334     if( p_sys->i_duration/p_sys->i_timescale > 0 )
 335     {
 336         p_input->stream.i_mux_rate =
 337             p_input->stream.p_selected_area->i_size / 50 /
 338             ( p_sys->i_duration / p_sys->i_timescale );
 339     }
 340     else
 341     {
 342         p_input->stream.i_mux_rate = 0;
 343     }
 344     vlc_mutex_unlock( &p_input->stream.stream_lock );
 345
 346
 347     /* allocate memory */
 348     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 349     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
 350
 351     /* now process each track and extract all usefull informations */
 352     for( i = 0; i < p_sys->i_tracks; i++ )
 353     {
 354         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 355         MP4_TrackCreate( p_input, &p_sys->track[i], p_trak );
 356
 357         if( p_sys->track[i].b_ok )
 358         {
 359             char *psz_cat;
 360             switch( p_sys->track[i].fmt.i_cat )
 361             {
 362                 case( VIDEO_ES ):
 363                     psz_cat = "video";
 364                     break;
 365                 case( AUDIO_ES ):
 366                     psz_cat = "audio";
 367                     break;
 368                 default:
 369                     psz_cat = "unknown";
 370                     break;
 371             }
 372
 373             msg_Dbg( p_input, "adding track[Id 0x%x] %s (%s) language %s",
 374                             p_sys->track[i].i_track_ID,
 375                             psz_cat,
 376                             p_sys->track[i].b_enable ? "enable":"disable",
 377                             p_sys->track[i].fmt.psz_language ? p_sys->track[i].fmt.psz_language : "undef" );
 378         }
 379         else
 380         {
 381             msg_Dbg( p_input, "ignoring track[Id 0x%x]", p_sys->track[i].i_track_ID );
 382         }
 383
 384     }
 385     return VLC_SUCCESS;
 386
 387 error:
 388     if( p_sys->p_root )
 389     {
 390         MP4_BoxFree( p_input, p_sys->p_root );
 391     }
 392     free( p_sys );
 393     return VLC_EGENERIC;
 394 }
 395
 396 /*****************************************************************************
 397  * Demux: read packet and send them to decoders
 398  *****************************************************************************
 399  * TODO check for newly selected track (ie audio upt to now )
 400  *****************************************************************************/
 401 static int Demux( input_thread_t *p_input )
 402 {
 403     demux_sys_t *p_sys = p_input->p_demux_data;
 404     unsigned int i_track;
 405
 406
 407     unsigned int i_track_selected;
 408     vlc_bool_t   b_play_audio;
 409
 410     /* check for newly selected/unselected track */
 411     for( i_track = 0, i_track_selected = 0; i_track <  p_sys->i_tracks; i_track++ )
 412     {
 413         mp4_track_t *tk = &p_sys->track[i_track];
 414
 415         if( tk->b_selected && tk->i_sample >= tk->i_sample_count )
 416         {
 417             msg_Warn( p_input, "track[0x%x] will be disabled", tk->i_track_ID );
 418             MP4_TrackUnselect( p_input, tk);
 419         }
 420         else if( tk->b_ok )
 421         {
 422             vlc_bool_t b;
 423             es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 424
 425             if( tk->b_selected && !b )
 426             {
 427                 MP4_TrackUnselect( p_input, tk );
 428             }
 429             else if( !tk->b_selected && b)
 430             {
 431                 MP4_TrackSelect( p_input, tk, MP4_GetMoviePTS( p_sys ) );
 432             }
 433
 434             if( tk->b_selected )
 435             {
 436                 i_track_selected++;
 437             }
 438         }
 439     }
 440
 441     if( i_track_selected <= 0 )
 442     {
 443         msg_Warn( p_input, "no track selected, exiting..." );
 444         return 0;
 445     }
 446
 447     /* first wait for the good time to read a packet */
 448     input_ClockManageRef( p_input,
 449                           p_input->stream.p_selected_program,
 450                           p_sys->i_pcr );
 451
 452     /* update pcr XXX in mpeg scale so in 90000 unit/s */
 453     p_sys->i_pcr = MP4_GetMoviePTS( p_sys ) * 9 / 100;
 454
 455     /* we will read 100ms for each stream so ...*/
 456     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 457
 458     /* Check if we need to send the audio data to decoder */
 459     b_play_audio = !p_input->stream.control.b_mute;
 460
 461     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 462     {
 463         mp4_track_t *tk = &p_sys->track[i_track];
 464
 465         if( !tk->b_ok || !tk->b_selected )
 466         {
 467             continue;
 468         }
 469
 470         while( MP4_TrackGetPTS( tk) < MP4_GetMoviePTS( p_sys ) )
 471         {
 472             if( MP4_TrackSampleSize( tk ) > 0 &&
 473                 ( b_play_audio || tk->fmt.i_cat != AUDIO_ES ) )
 474             {
 475                 block_t *p_block;
 476
 477                 /* go,go go ! */
 478                 if( stream_Seek( p_input->s, MP4_TrackGetPos( tk ) ) )
 479                 {
 480                     msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
 481                     MP4_TrackUnselect( p_input, tk );
 482                     break;
 483                 }
 484
 485                 /* now read pes */
 486                 if( ( p_block = stream_Block( p_input->s,
 487                                               MP4_TrackSampleSize( tk ) ) ) == NULL )
 488                 {
 489                     msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
 490                     MP4_TrackUnselect( p_input, tk );
 491                     break;
 492                 }
 493
 494                 if( tk->b_drms && tk->p_drms )
 495                 {
 496                     drms_decrypt( tk->p_drms,
 497                                   (uint32_t*)p_block->p_buffer,
 498                                   p_block->i_buffer );
 499                 }
 500                 p_block->i_dts =
 501                     input_ClockGetTS( p_input,
 502                                       p_input->stream.p_selected_program,
 503                                       MP4_TrackGetPTS( tk ) * 9/100 );
 504
 505                 p_block->i_pts = tk->fmt.i_cat == VIDEO_ES ? 0 : p_block->i_dts;
 506
 507                 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
 508                 {
 509                     es_out_Send( p_input->p_es_out, tk->p_es, p_block );
 510                 }
 511             }
 512
 513             /* Next sample */
 514             if( MP4_TrackNextSample( p_input, tk ) )
 515             {
 516                 break;
 517             }
 518         }
 519     }
 520
 521     return 1;
 522 }
 523 /*****************************************************************************
 524  * Seek: Got to i_date
 525  ******************************************************************************/
 526 static int   Seek     ( input_thread_t *p_input, mtime_t i_date )
 527 {
 528     demux_sys_t *p_sys = p_input->p_demux_data;
 529     unsigned int i_track;
 530
 531     /* First update update global time */
 532     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 533     p_sys->i_pcr  = i_date* 9 / 100;
 534
 535     /* Now for each stream try to go to this time */
 536     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 537     {
 538         mp4_track_t *tk = &p_sys->track[i_track];
 539
 540         if( tk->b_ok && tk->b_selected )
 541         {
 542             MP4_TrackSeek( p_input, tk, i_date );
 543         }
 544     }
 545     return( 1 );
 546 }
 547
 548 /*****************************************************************************
 549  * Control:
 550  *****************************************************************************/
 551 static int   Control  ( input_thread_t *p_input, int i_query, va_list args )
 552 {
 553     demux_sys_t *p_sys = p_input->p_demux_data;
 554
 555     double   f, *pf;
 556     int64_t i64, *pi64;
 557
 558     switch( i_query )
 559     {
 560         case DEMUX_GET_POSITION:
 561             pf = (double*)va_arg( args, double * );
 562             if( p_sys->i_duration > 0 )
 563             {
 564                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 565             }
 566             else
 567             {
 568                 *pf = 0.0;
 569             }
 570             return VLC_SUCCESS;
 571
 572         case DEMUX_SET_POSITION:
 573             f = (double)va_arg( args, double );
 574             i64 = (int64_t)( f *
 575                              (double)1000000 *
 576                              (double)p_sys->i_duration /
 577                              (double)p_sys->i_timescale );
 578             return Seek( p_input, i64 );
 579
 580         case DEMUX_GET_TIME:
 581             pi64 = (int64_t*)va_arg( args, int64_t * );
 582             *pi64 = (mtime_t)1000000 *
 583                     (mtime_t)p_sys->i_time /
 584                     (mtime_t)p_sys->i_timescale;
 585             return VLC_SUCCESS;
 586
 587         case DEMUX_SET_TIME:
 588             i64 = (int64_t)va_arg( args, int64_t );
 589             return Seek( p_input, i64 );
 590
 591         case DEMUX_GET_LENGTH:
 592             pi64 = (int64_t*)va_arg( args, int64_t * );
 593             *pi64 = (mtime_t)1000000 *
 594                     (mtime_t)p_sys->i_duration /
 595                     (mtime_t)p_sys->i_timescale;
 596             return VLC_SUCCESS;
 597         case DEMUX_GET_FPS:
 598             msg_Warn( p_input, "DEMUX_GET_FPS unimplemented !!" );
 599             return VLC_EGENERIC;
 600         default:
 601             msg_Err( p_input, "control query unimplemented !!!" );
 602             return demux_vaControlDefault( p_input, i_query, args );
 603     }
 604 }
 605
 606 /*****************************************************************************
 607  * Close: frees unused data
 608  *****************************************************************************/
 609 static void Close ( vlc_object_t * p_this )
 610 {
 611     unsigned int i_track;
 612     input_thread_t *  p_input = (input_thread_t *)p_this;
 613     demux_sys_t *p_sys = p_input->p_demux_data;
 614
 615     msg_Dbg( p_input, "freeing all memory" );
 616
 617     MP4_BoxFree( p_input, p_sys->p_root );
 618     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 619     {
 620         MP4_TrackDestroy( p_input, &p_sys->track[i_track] );
 621     }
 622     FREE( p_sys->track );
 623
 624     free( p_sys );
 625 }
 626
 627
 628
 629 /****************************************************************************
 630  * Local functions, specific to vlc
 631  ****************************************************************************/
 632
 633 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 634 static int TrackCreateChunksIndex( input_thread_t *p_input,
 635                                    mp4_track_t *p_demux_track )
 636 {
 637     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 638     MP4_Box_t *p_stsc;
 639
 640     unsigned int i_chunk;
 641     unsigned int i_index, i_last;
 642
 643     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 644           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 645         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 646     {
 647         return( VLC_EGENERIC );
 648     }
 649
 650     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 651     if( !p_demux_track->i_chunk_count )
 652     {
 653         msg_Warn( p_input, "no chunk defined" );
 654         return( VLC_EGENERIC );
 655     }
 656     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 657                                    sizeof( mp4_chunk_t ) );
 658
 659     /* first we read chunk offset */
 660     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 661     {
 662         p_demux_track->chunk[i_chunk].i_offset =
 663                 p_co64->data.p_co64->i_chunk_offset[i_chunk];
 664     }
 665
 666     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 667         to be used for the sample XXX begin to 1
 668         We construct it begining at the end */
 669     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 670     i_index = p_stsc->data.p_stsc->i_entry_count;
 671     if( !i_index )
 672     {
 673         msg_Warn( p_input, "cannot read chunk table or table empty" );
 674         return( VLC_EGENERIC );
 675     }
 676
 677     while( i_index )
 678     {
 679         i_index--;
 680         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 681                 i_chunk < i_last; i_chunk++ )
 682         {
 683             p_demux_track->chunk[i_chunk].i_sample_description_index =
 684                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 685             p_demux_track->chunk[i_chunk].i_sample_count =
 686                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 687         }
 688         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 689     }
 690
 691     p_demux_track->chunk[0].i_sample_first = 0;
 692     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 693     {
 694         p_demux_track->chunk[i_chunk].i_sample_first =
 695             p_demux_track->chunk[i_chunk-1].i_sample_first +
 696                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 697     }
 698
 699     msg_Dbg( p_input,
 700              "track[Id 0x%x] read %d chunk",
 701              p_demux_track->i_track_ID,
 702             p_demux_track->i_chunk_count );
 703
 704     return( VLC_SUCCESS );
 705 }
 706 static int TrackCreateSamplesIndex( input_thread_t *p_input,
 707                                     mp4_track_t *p_demux_track )
 708 {
 709     MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
 710                           ctts make same mapping but for composition time,
 711                           not yet used and probably not usefull */
 712     MP4_Box_t *p_stsz; /* gives sample size of each samples, there is also stz2
 713                           that uses a compressed form FIXME make them in libmp4
 714                           as a unique type */
 715     /* TODO use also stss and stsh table for seeking */
 716     /* FIXME use edit table */
 717     int64_t i_sample;
 718     int64_t i_chunk;
 719
 720     int64_t i_index;
 721     int64_t i_index_sample_used;
 722
 723     int64_t i_last_dts;
 724
 725     p_stts = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
 726     p_stsz = MP4_BoxGet( p_demux_track->p_stbl, "stsz" ); /* FIXME and stz2 */
 727
 728     if( ( !p_stts )||( !p_stsz ) )
 729     {
 730         msg_Warn( p_input, "cannot read sample table" );
 731         return( VLC_EGENERIC );
 732     }
 733
 734     p_demux_track->i_sample_count = p_stsz->data.p_stsz->i_sample_count;
 735
 736
 737     /* for sample size, there are 2 case */
 738     if( p_stsz->data.p_stsz->i_sample_size )
 739     {
 740         /* 1: all sample have the same size, so no need to construct a table */
 741         p_demux_track->i_sample_size = p_stsz->data.p_stsz->i_sample_size;
 742         p_demux_track->p_sample_size = NULL;
 743     }
 744     else
 745     {
 746         /* 2: each sample can have a different size */
 747         p_demux_track->i_sample_size = 0;
 748         p_demux_track->p_sample_size =
 749             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
 750
 751         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
 752         {
 753             p_demux_track->p_sample_size[i_sample] =
 754                     p_stsz->data.p_stsz->i_entry_size[i_sample];
 755         }
 756     }
 757     /* we have extract all information from stsz,
 758         now use stts */
 759
 760     /* if we don't want to waste too much memory, we can't expand
 761        the box !, so each chunk will contain an "extract" of this table
 762        for fast research */
 763
 764     i_last_dts = 0;
 765     i_index = 0; i_index_sample_used =0;
 766
 767     /* create and init last data for each chunk */
 768     for(i_chunk = 0 ; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 769     {
 770
 771         int64_t i_entry, i_sample_count, i;
 772         /* save last dts */
 773         p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
 774     /* count how many entries needed for this chunk
 775        for p_sample_delta_dts and p_sample_count_dts */
 776
 777         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 778
 779         i_entry = 0;
 780         while( i_sample_count > 0 )
 781         {
 782             i_sample_count -= p_stts->data.p_stts->i_sample_count[i_index+i_entry];
 783             if( i_entry == 0 )
 784             {
 785                 i_sample_count += i_index_sample_used; /* don't count already used sample
 786                                                    int this entry */
 787             }
 788             i_entry++;
 789         }
 790
 791         /* allocate them */
 792         p_demux_track->chunk[i_chunk].p_sample_count_dts =
 793             calloc( i_entry, sizeof( uint32_t ) );
 794         p_demux_track->chunk[i_chunk].p_sample_delta_dts =
 795             calloc( i_entry, sizeof( uint32_t ) );
 796
 797         /* now copy */
 798         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 799         for( i = 0; i < i_entry; i++ )
 800         {
 801             int64_t i_used;
 802             int64_t i_rest;
 803
 804             i_rest = p_stts->data.p_stts->i_sample_count[i_index] - i_index_sample_used;
 805
 806             i_used = __MIN( i_rest, i_sample_count );
 807
 808             i_index_sample_used += i_used;
 809             i_sample_count -= i_used;
 810
 811             p_demux_track->chunk[i_chunk].p_sample_count_dts[i] = i_used;
 812
 813             p_demux_track->chunk[i_chunk].p_sample_delta_dts[i] =
 814                         p_stts->data.p_stts->i_sample_delta[i_index];
 815
 816             i_last_dts += i_used *
 817                     p_demux_track->chunk[i_chunk].p_sample_delta_dts[i];
 818
 819             if( i_index_sample_used >=
 820                              p_stts->data.p_stts->i_sample_count[i_index] )
 821             {
 822
 823                 i_index++;
 824                 i_index_sample_used = 0;
 825             }
 826         }
 827
 828     }
 829
 830     msg_Dbg( p_input,
 831              "track[Id 0x%x] read %d samples length:"I64Fd"s",
 832              p_demux_track->i_track_ID,
 833              p_demux_track->i_sample_count,
 834              i_last_dts / p_demux_track->i_timescale );
 835
 836     return( VLC_SUCCESS );
 837 }
 838
 839 /*
 840  * TrackCreateES:
 841  *  Create ES and PES to init decoder if needed, for a track starting at i_chunk
 842  */
 843 static int  TrackCreateES   ( input_thread_t   *p_input,
 844                               mp4_track_t *p_track,
 845                               unsigned int     i_chunk,
 846                               es_out_id_t      **pp_es )
 847 {
 848     MP4_Box_t   *p_sample;
 849     MP4_Box_t   *p_esds;
 850
 851     *pp_es = NULL;
 852
 853     if( !p_track->chunk[i_chunk].i_sample_description_index )
 854     {
 855         msg_Warn( p_input,
 856                   "invalid SampleEntry index (track[Id 0x%x])",
 857                   p_track->i_track_ID );
 858         return VLC_EGENERIC;
 859     }
 860
 861     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
 862                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
 863
 864     if( !p_sample || !p_sample->data.p_data )
 865     {
 866         msg_Warn( p_input,
 867                   "cannot find SampleEntry (track[Id 0x%x])",
 868                   p_track->i_track_ID );
 869         return( VLC_EGENERIC );
 870     }
 871
 872     p_track->p_sample = p_sample;
 873
 874     if( p_track->i_sample_size == 1 )
 875     {
 876         MP4_Box_data_sample_soun_t *p_soun;
 877
 878         p_soun = p_sample->data.p_sample_soun;
 879
 880         if( p_soun->i_qt_version == 0 )
 881         {
 882             switch( p_sample->i_type )
 883             {
 884                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
 885                     p_soun->i_qt_version = 1;
 886                     p_soun->i_sample_per_packet = 64;
 887                     p_soun->i_bytes_per_packet  = 34;
 888                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
 889                     p_soun->i_bytes_per_sample  = 2;
 890                     break;
 891                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
 892                     p_soun->i_qt_version = 1;
 893                     p_soun->i_sample_per_packet = 6;
 894                     p_soun->i_bytes_per_packet  = 2;
 895                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
 896                     p_soun->i_bytes_per_sample  = 2;
 897                     break;
 898                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
 899                     p_soun->i_qt_version = 1;
 900                     p_soun->i_sample_per_packet = 12;
 901                     p_soun->i_bytes_per_packet  = 2;
 902                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
 903                     p_soun->i_bytes_per_sample  = 2;
 904                     break;
 905                 default:
 906                     break;
 907             }
 908
 909         }
 910         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
 911         {
 912             p_soun->i_qt_version = 0;
 913         }
 914     }
 915
 916
 917     /* It's a little ugly but .. there are special cases */
 918     switch( p_sample->i_type )
 919     {
 920         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
 921         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
 922             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
 923             break;
 924         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
 925             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
 926             break;
 927         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
 928             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
 929             break;
 930         default:
 931             p_track->fmt.i_codec = p_sample->i_type;
 932             break;
 933     }
 934
 935     /* now see if esds is present and if so create a data packet
 936         with decoder_specific_info  */
 937 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
 938     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
 939           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
 940         ( p_esds->data.p_esds )&&
 941         ( p_decconfig ) )
 942     {
 943         /* First update information based on i_objectTypeIndication */
 944         switch( p_decconfig->i_objectTypeIndication )
 945         {
 946             case( 0x20 ): /* MPEG4 VIDEO */
 947                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
 948                 break;
 949             case( 0x40):
 950                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
 951                 break;
 952             case( 0x60):
 953             case( 0x61):
 954             case( 0x62):
 955             case( 0x63):
 956             case( 0x64):
 957             case( 0x65): /* MPEG2 video */
 958                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
 959                 break;
 960             /* Theses are MPEG2-AAC */
 961             case( 0x66): /* main profile */
 962             case( 0x67): /* Low complexity profile */
 963             case( 0x68): /* Scaleable Sampling rate profile */
 964                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
 965                 break;
 966             /* true MPEG 2 audio */
 967             case( 0x69):
 968                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
 969                 break;
 970             case( 0x6a): /* MPEG1 video */
 971                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
 972                 break;
 973             case( 0x6b): /* MPEG1 audio */
 974                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
 975                 break;
 976             case( 0x6c ): /* jpeg */
 977                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
 978                 break;
 979             default:
 980                 /* Unknown entry, but don't touch i_fourcc */
 981                 msg_Warn( p_input,
 982                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
 983                           p_decconfig->i_objectTypeIndication,
 984                           p_track->i_track_ID );
 985                 break;
 986         }
 987         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
 988         if( p_track->fmt.i_extra > 0 )
 989         {
 990             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
 991             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
 992                     p_track->fmt.i_extra );
 993         }
 994     }
 995     else
 996     {
 997         switch( p_sample->i_type )
 998         {
 999             /* qt decoder, send the complete chunk */
1000             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1001             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1002             case VLC_FOURCC( 'V', 'P', '3', '1' ):
1003             case VLC_FOURCC( '3', 'I', 'V', '1' ):
1004             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1005                 p_track->fmt.i_extra =
1006                     p_sample->data.p_sample_vide->i_qt_image_description;
1007                 if( p_track->fmt.i_extra > 0 )
1008                 {
1009                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1010                     memcpy( p_track->fmt.p_extra,
1011                             p_sample->data.p_sample_vide->p_qt_image_description,
1012                             p_track->fmt.i_extra);
1013                 }
1014                 break;
1015             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1016             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1017             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1018             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1019                 p_track->fmt.i_extra =
1020                     p_sample->data.p_sample_soun->i_qt_description;
1021                 if( p_track->fmt.i_extra > 0 )
1022                 {
1023                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1024                     memcpy( p_track->fmt.p_extra,
1025                             p_sample->data.p_sample_soun->p_qt_description,
1026                             p_track->fmt.i_extra);
1027                 }
1028                 break;
1029             default:
1030                 break;
1031         }
1032     }
1033
1034 #undef p_decconfig
1035
1036     /* some last initialisation */
1037     switch( p_track->fmt.i_cat )
1038     {
1039     case( VIDEO_ES ):
1040         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1041         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1042
1043         /* fall on display size */
1044         if( p_track->fmt.video.i_width <= 0 )
1045             p_track->fmt.video.i_width = p_track->i_width;
1046         if( p_track->fmt.video.i_height <= 0 )
1047             p_track->fmt.video.i_height = p_track->i_height;
1048
1049         /* Find out apect ratio from display size */
1050         if( p_track->i_width > 0 && p_track->i_height > 0 )
1051             p_track->fmt.video.i_aspect =
1052                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1053
1054         break;
1055
1056     case( AUDIO_ES ):
1057         p_track->fmt.audio.i_channels =
1058             p_sample->data.p_sample_soun->i_channelcount;
1059         p_track->fmt.audio.i_rate =
1060             p_sample->data.p_sample_soun->i_sampleratehi;
1061         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1062             p_sample->data.p_sample_soun->i_sampleratehi *
1063                 p_sample->data.p_sample_soun->i_samplesize;
1064         p_track->fmt.audio.i_bitspersample =
1065             p_sample->data.p_sample_soun->i_samplesize;
1066         break;
1067
1068     default:
1069         break;
1070     }
1071
1072     *pp_es = es_out_Add( p_input->p_es_out, &p_track->fmt );
1073
1074     return VLC_SUCCESS;
1075 }
1076
1077 /* given a time it return sample/chunk */
1078 static int  TrackTimeToSampleChunk( input_thread_t *p_input,
1079                                     mp4_track_t *p_track,
1080                                     uint64_t i_start,
1081                                     uint32_t *pi_chunk,
1082                                     uint32_t *pi_sample )
1083 {
1084     MP4_Box_t    *p_stss;
1085     uint64_t     i_dts;
1086     unsigned int i_sample;
1087     unsigned int i_chunk;
1088     int          i_index;
1089
1090     /* convert absolute time to in timescale unit */
1091     i_start = i_start * (mtime_t)p_track->i_timescale / (mtime_t)1000000;
1092
1093     /* FIXME see if it's needed to check p_track->i_chunk_count */
1094     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1095     {
1096         return( VLC_EGENERIC );
1097     }
1098
1099     /* we start from sample 0/chunk 0, hope it won't take too much time */
1100     /* *** find good chunk *** */
1101     for( i_chunk = 0; ; i_chunk++ )
1102     {
1103         if( i_chunk + 1 >= p_track->i_chunk_count )
1104         {
1105             /* at the end and can't check if i_start in this chunk,
1106                it will be check while searching i_sample */
1107             i_chunk = p_track->i_chunk_count - 1;
1108             break;
1109         }
1110
1111         if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1112             i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1113         {
1114             break;
1115         }
1116     }
1117
1118     /* *** find sample in the chunk *** */
1119     i_sample = p_track->chunk[i_chunk].i_sample_first;
1120     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1121     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1122     {
1123         if( i_dts +
1124             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1125             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1126         {
1127             i_dts    +=
1128                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1129                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1130
1131             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1132             i_index++;
1133         }
1134         else
1135         {
1136             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1137             {
1138                 break;
1139             }
1140             i_sample += ( i_start - i_dts ) / p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1141             break;
1142         }
1143     }
1144
1145     if( i_sample >= p_track->i_sample_count )
1146     {
1147         msg_Warn( p_input,
1148                   "track[Id 0x%x] will be disabled (seeking too far) chunk=%d sample=%d",
1149                   p_track->i_track_ID, i_chunk, i_sample );
1150         return( VLC_EGENERIC );
1151     }
1152
1153
1154     /* *** Try to find nearest sync points *** */
1155     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1156     {
1157         unsigned int i_index;
1158         msg_Dbg( p_input,
1159                     "track[Id 0x%x] using Sync Sample Box (stss)",
1160                     p_track->i_track_ID );
1161         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1162         {
1163             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1164             {
1165                 if( i_index > 0 )
1166                 {
1167                     msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1168                             i_sample,
1169                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1170                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1171                     /* new i_sample is less than old so i_chunk can only decreased */
1172                     while( i_chunk > 0 &&
1173                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1174                     {
1175                         i_chunk--;
1176                     }
1177                 }
1178                 else
1179                 {
1180                     msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1181                             i_sample,
1182                             p_stss->data.p_stss->i_sample_number[i_index] );
1183                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1184                     /* new i_sample is more than old so i_chunk can only increased */
1185                     while( i_chunk < p_track->i_chunk_count - 1 &&
1186                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1187                                                 p_track->chunk[i_chunk].i_sample_count )
1188                     {
1189                         i_chunk++;
1190                     }
1191                 }
1192                 break;
1193             }
1194         }
1195     }
1196     else
1197     {
1198         msg_Dbg( p_input,
1199                     "track[Id 0x%x] does not provide Sync Sample Box (stss)",
1200                     p_track->i_track_ID );
1201     }
1202
1203     if( pi_chunk  ) *pi_chunk  = i_chunk;
1204     if( pi_sample ) *pi_sample = i_sample;
1205     return( VLC_SUCCESS );
1206 }
1207
1208 static int  TrackGotoChunkSample( input_thread_t   *p_input,
1209                                   mp4_track_t *p_track,
1210                                   unsigned int     i_chunk,
1211                                   unsigned int     i_sample )
1212 {
1213     vlc_bool_t b_reselect = VLC_FALSE;
1214
1215     /* now see if actual es is ok */
1216     if( p_track->i_chunk < 0 ||
1217         p_track->i_chunk >= p_track->i_chunk_count ||
1218         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1219             p_track->chunk[i_chunk].i_sample_description_index )
1220     {
1221         msg_Warn( p_input, "Recreate ES" );
1222
1223         es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, p_track->p_es, &b_reselect );
1224
1225         es_out_Del( p_input->p_es_out, p_track->p_es );
1226
1227         p_track->p_es = NULL;
1228
1229         if( TrackCreateES( p_input,
1230                            p_track, i_chunk,
1231                            &p_track->p_es ) )
1232         {
1233             msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1234                      p_track->i_track_ID );
1235
1236             p_track->b_ok       = VLC_FALSE;
1237             p_track->b_selected = VLC_FALSE;
1238             return VLC_EGENERIC;
1239         }
1240     }
1241
1242     /* select again the new decoder */
1243     if( b_reselect )
1244     {
1245         es_out_Control( p_input->p_es_out, ES_OUT_SET_ES, p_track->p_es );
1246     }
1247
1248     p_track->i_chunk    = i_chunk;
1249     p_track->i_sample   = i_sample;
1250
1251     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1252 }
1253
1254 /****************************************************************************
1255  * MP4_TrackCreate:
1256  ****************************************************************************
1257  * Parse track information and create all needed data to run a track
1258  * If it succeed b_ok is set to 1 else to 0
1259  ****************************************************************************/
1260 static void MP4_TrackCreate( input_thread_t *p_input,
1261                              mp4_track_t *p_track,
1262                              MP4_Box_t  * p_box_trak )
1263 {
1264     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1265     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1266     MP4_Box_t *p_elst;
1267
1268     MP4_Box_t *p_mdhd;
1269     MP4_Box_t *p_hdlr;
1270
1271     MP4_Box_t *p_vmhd;
1272     MP4_Box_t *p_smhd;
1273
1274     MP4_Box_t *p_drms;
1275
1276     unsigned int i;
1277     char language[4];
1278
1279     /* hint track unsuported */
1280
1281     /* set default value (-> track unusable) */
1282     p_track->b_ok       = VLC_FALSE;
1283     p_track->b_enable   = VLC_FALSE;
1284     p_track->b_selected = VLC_FALSE;
1285
1286     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1287
1288     if( !p_tkhd )
1289     {
1290         return;
1291     }
1292
1293     /* do we launch this track by default ? */
1294     p_track->b_enable =
1295         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1296
1297     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1298     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1299     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1300
1301     if( ( p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1302     {
1303 /*        msg_Warn( p_input, "unhandled box: edts --> FIXME" ); */
1304     }
1305
1306     if( p_tref )
1307     {
1308 /*        msg_Warn( p_input, "unhandled box: tref --> FIXME" ); */
1309     }
1310
1311     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1312     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1313
1314     if( ( !p_mdhd )||( !p_hdlr ) )
1315     {
1316         return;
1317     }
1318
1319     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1320
1321     for( i = 0; i < 3; i++ )
1322     {
1323         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1324     }
1325     language[3] = '\0';
1326
1327     switch( p_hdlr->data.p_hdlr->i_handler_type )
1328     {
1329         case( FOURCC_soun ):
1330             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1331             {
1332                 return;
1333             }
1334             p_track->fmt.i_cat = AUDIO_ES;
1335             break;
1336
1337         case( FOURCC_vide ):
1338             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1339             {
1340                 return;
1341             }
1342             p_track->fmt.i_cat = VIDEO_ES;
1343             break;
1344
1345         default:
1346             return;
1347     }
1348 /*  TODO
1349     add support for:
1350     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1351 */
1352     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1353         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1354     {
1355         return;
1356     }
1357
1358     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1359     p_track->b_drms = p_drms != NULL;
1360     p_track->p_drms = p_track->b_drms ?
1361         p_drms->data.p_sample_soun->p_drms : NULL;
1362
1363     /* Set language */
1364     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1365     {
1366         p_track->fmt.psz_language = LanguageGetName( language );
1367     }
1368
1369     /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1370     if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1371     {
1372         MP4_Box_t *p_sample;
1373
1374         p_sample = MP4_BoxGet(  p_track->p_stsd, "[0]" );
1375         if( p_sample && p_sample->data.p_sample_soun)
1376         {
1377             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1378             if( p_soun->i_qt_version == 0 &&
1379                 p_track->i_timescale != p_soun->i_sampleratehi )
1380             {
1381                 msg_Warn( p_input,
1382                           "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1383                           "qt_version == 0\n"
1384                           "Making both equal. (report any problem)",
1385                           p_track->i_timescale, p_soun->i_sampleratehi );
1386
1387                 if( p_soun->i_sampleratehi )
1388                     p_track->i_timescale = p_soun->i_sampleratehi;
1389                 else
1390                     p_soun->i_sampleratehi = p_track->i_timescale;
1391             }
1392         }
1393     }
1394
1395     /* Create chunk index table and sample index table */
1396     if( TrackCreateChunksIndex( p_input,p_track  ) ||
1397         TrackCreateSamplesIndex( p_input, p_track ) )
1398     {
1399         return; /* cannot create chunks index */
1400     }
1401
1402     p_track->i_chunk  = 0;
1403     p_track->i_sample = 0;
1404
1405     /* now create es */
1406     if( TrackCreateES( p_input,
1407                        p_track, p_track->i_chunk,
1408                        &p_track->p_es ) )
1409     {
1410         msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1411                  p_track->i_track_ID );
1412         return;
1413     }
1414
1415 #if 0
1416     {
1417         int i;
1418         for( i = 0; i < p_track->i_chunk_count; i++ )
1419         {
1420             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n", i, p_track->chunk[i].i_sample_count, p_track->chunk[i].i_first_dts );
1421
1422         }
1423     }
1424 #endif
1425     p_track->b_ok = VLC_TRUE;
1426 }
1427
1428 /****************************************************************************
1429  * MP4_TrackDestroy:
1430  ****************************************************************************
1431  * Destroy a track created by MP4_TrackCreate.
1432  ****************************************************************************/
1433 static void MP4_TrackDestroy( input_thread_t *p_input,
1434                               mp4_track_t *p_track )
1435 {
1436     unsigned int i_chunk;
1437
1438     p_track->b_ok = VLC_FALSE;
1439     p_track->b_enable   = VLC_FALSE;
1440     p_track->b_selected = VLC_FALSE;
1441
1442     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1443
1444     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1445     {
1446         if( p_track->chunk )
1447         {
1448            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1449            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1450         }
1451     }
1452     FREE( p_track->chunk );
1453
1454     if( !p_track->i_sample_size )
1455     {
1456         FREE( p_track->p_sample_size );
1457     }
1458 }
1459
1460 static int  MP4_TrackSelect ( input_thread_t    *p_input,
1461                               mp4_track_t  *p_track,
1462                               mtime_t           i_start )
1463 {
1464     uint32_t i_chunk;
1465     uint32_t i_sample;
1466
1467     if( !p_track->b_ok )
1468     {
1469         return( VLC_EGENERIC );
1470     }
1471
1472     if( p_track->b_selected )
1473     {
1474         msg_Warn( p_input,
1475                   "track[Id 0x%x] already selected",
1476                   p_track->i_track_ID );
1477         return( VLC_SUCCESS );
1478     }
1479
1480     if( TrackTimeToSampleChunk( p_input,
1481                                 p_track, i_start,
1482                                 &i_chunk, &i_sample ) )
1483     {
1484         msg_Warn( p_input,
1485                   "cannot select track[Id 0x%x]",
1486                   p_track->i_track_ID );
1487         return( VLC_EGENERIC );
1488     }
1489
1490     p_track->b_selected = VLC_TRUE;
1491
1492     if( TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample ) )
1493     {
1494         p_track->b_selected = VLC_FALSE;
1495     }
1496     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1497 }
1498
1499 static void MP4_TrackUnselect(input_thread_t    *p_input,
1500                               mp4_track_t  *p_track )
1501 {
1502     if( !p_track->b_ok )
1503     {
1504         return;
1505     }
1506
1507     if( !p_track->b_selected )
1508     {
1509         msg_Warn( p_input,
1510                   "track[Id 0x%x] already unselected",
1511                   p_track->i_track_ID );
1512         return;
1513     }
1514     if( p_track->p_es )
1515     {
1516         es_out_Control( p_input->p_es_out, ES_OUT_SET_ES_STATE, p_track->p_es, VLC_FALSE );
1517     }
1518
1519     p_track->b_selected = VLC_FALSE;
1520 }
1521
1522 static int  MP4_TrackSeek   ( input_thread_t    *p_input,
1523                               mp4_track_t  *p_track,
1524                               mtime_t           i_start )
1525 {
1526     uint32_t i_chunk;
1527     uint32_t i_sample;
1528
1529     if( !p_track->b_ok )
1530     {
1531         return( VLC_EGENERIC );
1532     }
1533
1534     if( TrackTimeToSampleChunk( p_input,
1535                                 p_track, i_start,
1536                                 &i_chunk, &i_sample ) )
1537     {
1538         msg_Warn( p_input,
1539                   "cannot select track[Id 0x%x]",
1540                   p_track->i_track_ID );
1541         return( VLC_EGENERIC );
1542     }
1543
1544     p_track->b_selected = VLC_TRUE;
1545
1546     TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample );
1547
1548     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1549 }
1550
1551
1552
1553 /*
1554  * 3 types: for audio
1555  *
1556  */
1557 #define QT_V0_MAX_SAMPLES    1500
1558 static int  MP4_TrackSampleSize( mp4_track_t   *p_track )
1559 {
1560     int i_size;
1561     MP4_Box_data_sample_soun_t *p_soun;
1562
1563     if( p_track->i_sample_size == 0 )
1564     {
1565         /* most simple case */
1566         return( p_track->p_sample_size[p_track->i_sample] );
1567     }
1568     if( p_track->fmt.i_cat != AUDIO_ES )
1569     {
1570         return( p_track->i_sample_size );
1571     }
1572
1573     if( p_track->i_sample_size != 1 )
1574     {
1575         //msg_Warn( p_input, "SampleSize != 1" );
1576         return( p_track->i_sample_size );
1577     }
1578
1579     p_soun = p_track->p_sample->data.p_sample_soun;
1580
1581     if( p_soun->i_qt_version == 1 )
1582     {
1583         i_size = p_track->chunk[p_track->i_chunk].i_sample_count / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
1584     }
1585     else
1586     {
1587         /* FIXME */
1588         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
1589                 ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first );
1590         if( i_samples > QT_V0_MAX_SAMPLES )
1591         {
1592             i_samples = QT_V0_MAX_SAMPLES;
1593         }
1594         i_size = i_samples * p_soun->i_channelcount * p_soun->i_samplesize / 8;
1595     }
1596
1597     //fprintf( stderr, "size=%d\n", i_size );
1598     return( i_size );
1599 }
1600
1601
1602 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
1603 {
1604     unsigned int i_sample;
1605     uint64_t i_pos;
1606
1607
1608     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
1609
1610     if( p_track->i_sample_size )
1611     {
1612         MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
1613
1614         if( p_soun->i_qt_version == 0 )
1615         {
1616             i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) *
1617                         p_soun->i_channelcount * p_soun->i_samplesize / 8;
1618         }
1619         else
1620         {
1621             /* we read chunk by chunk */
1622             i_pos += 0;
1623         }
1624     }
1625     else
1626     {
1627         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
1628                 i_sample < p_track->i_sample; i_sample++ )
1629         {
1630             i_pos += p_track->p_sample_size[i_sample];
1631         }
1632
1633     }
1634     return( i_pos );
1635 }
1636
1637 static int  MP4_TrackNextSample( input_thread_t     *p_input,
1638                                  mp4_track_t   *p_track )
1639 {
1640
1641     if( p_track->fmt.i_cat == AUDIO_ES &&
1642         p_track->i_sample_size != 0 )
1643     {
1644         MP4_Box_data_sample_soun_t *p_soun;
1645
1646         p_soun = p_track->p_sample->data.p_sample_soun;
1647
1648         if( p_soun->i_qt_version == 1 )
1649         {
1650             /* chunk by chunk */
1651             p_track->i_sample =
1652                 p_track->chunk[p_track->i_chunk].i_sample_first +
1653                 p_track->chunk[p_track->i_chunk].i_sample_count;
1654         }
1655         else
1656         {
1657             /* FIXME */
1658             p_track->i_sample += QT_V0_MAX_SAMPLES;
1659             if( p_track->i_sample > p_track->chunk[p_track->i_chunk].i_sample_first + p_track->chunk[p_track->i_chunk].i_sample_count )
1660             {
1661                 p_track->i_sample =
1662                     p_track->chunk[p_track->i_chunk].i_sample_first +
1663                     p_track->chunk[p_track->i_chunk].i_sample_count;
1664             }
1665         }
1666     }
1667     else
1668     {
1669         p_track->i_sample++;
1670     }
1671
1672     if( p_track->i_sample >= p_track->i_sample_count )
1673     {
1674         /* we have reach end of the track so free decoder stuff */
1675         msg_Warn( p_input, "track[0x%x] will be disabled", p_track->i_track_ID );
1676         MP4_TrackUnselect( p_input, p_track );
1677         return( VLC_EGENERIC );
1678     }
1679
1680     /* Have we changed chunk ? */
1681     if( p_track->i_sample >=
1682             p_track->chunk[p_track->i_chunk].i_sample_first +
1683             p_track->chunk[p_track->i_chunk].i_sample_count )
1684     {
1685         if( TrackGotoChunkSample( p_input,
1686                                   p_track,
1687                                   p_track->i_chunk + 1,
1688                                   p_track->i_sample ) )
1689         {
1690             msg_Warn( p_input, "track[0x%x] will be disabled (cannot restart decoder)", p_track->i_track_ID );
1691             MP4_TrackUnselect( p_input, p_track );
1692             return( VLC_EGENERIC );
1693         }
1694     }
1695
1696     return( VLC_SUCCESS );
1697 }
1698
1699
1700 static char *LanguageGetName( const char *psz_code )
1701 {
1702     const iso639_lang_t *pl;
1703
1704     pl = GetLang_2B( psz_code );
1705     if( !strcmp( pl->psz_iso639_1, "??" ) )
1706     {
1707         pl = GetLang_2T( psz_code );
1708     }
1709
1710     if( !strcmp( pl->psz_iso639_1, "??" ) )
1711     {
1712        return strdup( psz_code );
1713     }
1714
1715     if( *pl->psz_native_name )
1716     {
1717         return strdup( pl->psz_native_name );
1718     }
1719     return strdup( pl->psz_eng_name );
1720 }
1721