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 1.50 2004/01/09 04:37:43 jlj 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
  32 #include "libmp4.h"
  33 #include "mp4.h"
  34 #include "drms.h"
  35
  36 /*****************************************************************************
  37  * Module descriptor
  38  *****************************************************************************/
  39 static int  Open ( vlc_object_t * );
  40 static void Close( vlc_object_t * );
  41
  42 vlc_module_begin();
  43     set_description( _("MP4 demuxer") );
  44     set_capability( "demux", 242 );
  45     set_callbacks( Open, Close );
  46 vlc_module_end();
  47
  48 /*****************************************************************************
  49  * Local prototypes
  50  *****************************************************************************/
  51 static int    Demux   ( input_thread_t * );
  52 static int    DemuxRef( input_thread_t *p_input )
  53 {
  54     return 0;
  55 }
  56 static int   Seek     ( input_thread_t *, mtime_t );
  57 static int   Control  ( input_thread_t *, int, va_list );
  58
  59 /*****************************************************************************
  60  * Declaration of local function
  61  *****************************************************************************/
  62 static void MP4_TrackCreate ( input_thread_t *, track_data_mp4_t *, MP4_Box_t  *);
  63 static void MP4_TrackDestroy( input_thread_t *, track_data_mp4_t * );
  64
  65 static int  MP4_TrackSelect ( input_thread_t *, track_data_mp4_t *, mtime_t );
  66 static void MP4_TrackUnselect(input_thread_t *, track_data_mp4_t * );
  67
  68 static int  MP4_TrackSeek   ( input_thread_t *, track_data_mp4_t *, mtime_t );
  69
  70 static uint64_t MP4_GetTrackPos    ( track_data_mp4_t * );
  71 static int      MP4_TrackSampleSize( track_data_mp4_t * );
  72 static int      MP4_TrackNextSample( input_thread_t *, track_data_mp4_t * );
  73
  74 #define FREE( p ) \
  75     if( p ) { free( p ); (p) = NULL;}
  76
  77 /*****************************************************************************
  78  * Open: check file and initializes MP4 structures
  79  *****************************************************************************/
  80 static int Open( vlc_object_t * p_this )
  81 {
  82     input_thread_t  *p_input = (input_thread_t *)p_this;
  83     demux_sys_t     *p_sys;
  84
  85     uint8_t         *p_peek;
  86
  87     MP4_Box_t       *p_ftyp;
  88     MP4_Box_t       *p_rmra;
  89     MP4_Box_t       *p_mvhd;
  90     MP4_Box_t       *p_trak;
  91
  92     unsigned int    i;
  93     vlc_bool_t      b_seekable;
  94
  95     /* a little test to see if it could be a mp4 */
  96     if( stream_Peek( p_input->s, &p_peek, 8 ) < 8 )
  97     {
  98         msg_Warn( p_input, "MP4 plugin discarded (cannot peek)" );
  99         return VLC_EGENERIC;
 100     }
 101     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 102     {
 103         case FOURCC_ftyp:
 104         case FOURCC_moov:
 105         case FOURCC_foov:
 106         case FOURCC_moof:
 107         case FOURCC_mdat:
 108         case FOURCC_udta:
 109         case FOURCC_free:
 110         case FOURCC_skip:
 111         case FOURCC_wide:
 112             break;
 113          default:
 114             msg_Warn( p_input, "MP4 plugin discarded (not a valid file)" );
 115             return VLC_EGENERIC;
 116     }
 117
 118     /* I need to seek */
 119     stream_Control( p_input->s, STREAM_CAN_SEEK, &b_seekable );
 120     if( !b_seekable )
 121     {
 122         msg_Warn( p_input, "MP4 plugin discarded (unseekable)" );
 123         return VLC_EGENERIC;
 124     }
 125
 126     /*Set exported functions */
 127     p_input->pf_demux = Demux;
 128     p_input->pf_demux_control = Control;
 129
 130     /* create our structure that will contains all data */
 131     p_input->p_demux_data = p_sys = malloc( sizeof( demux_sys_t ) );
 132     memset( p_sys, 0, sizeof( demux_sys_t ) );
 133
 134     /* Now load all boxes ( except raw data ) */
 135     if( ( p_sys->p_root = MP4_BoxGetRoot( p_input ) ) == NULL )
 136     {
 137         msg_Warn( p_input, "MP4 plugin discarded (not a valid file)" );
 138         goto error;
 139     }
 140
 141     MP4_BoxDumpStructure( p_input, p_sys->p_root );
 142
 143     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 144     {
 145         switch( p_ftyp->data.p_ftyp->i_major_brand )
 146         {
 147             case( FOURCC_isom ):
 148                 msg_Dbg( p_input,
 149                          "ISO Media file (isom) version %d.",
 150                          p_ftyp->data.p_ftyp->i_minor_version );
 151                 break;
 152             default:
 153                 msg_Dbg( p_input,
 154                          "unrecognized major file specification (%4.4s).",
 155                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 156                 break;
 157         }
 158     }
 159     else
 160     {
 161         msg_Dbg( p_input, "file type box missing (assuming ISO Media file)" );
 162     }
 163
 164     /* the file need to have one moov box */
 165     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 166     {
 167         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 168
 169         if( !p_foov )
 170         {
 171             msg_Err( p_input, "MP4 plugin discarded (no moov box)" );
 172             goto error;
 173         }
 174         /* we have a free box as a moov, rename it */
 175         p_foov->i_type = FOURCC_moov;
 176     }
 177
 178     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 179     {
 180         playlist_t *p_playlist;
 181         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 182         int        i;
 183
 184         msg_Dbg( p_input, "detected playlist mov file (%d ref)", i_count );
 185
 186         p_playlist =
 187             (playlist_t *)vlc_object_find( p_input,
 188                                            VLC_OBJECT_PLAYLIST,
 189                                            FIND_ANYWHERE );
 190         if( p_playlist )
 191         {
 192             //p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
 193             for( i = 0; i < i_count; i++ )
 194             {
 195                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 196                 char      *psz_ref;
 197                 uint32_t  i_ref_type;
 198
 199                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 200                 {
 201                     continue;
 202                 }
 203                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 204
 205                 msg_Dbg( p_input, "new ref=`%s' type=%4.4s",
 206                          psz_ref, (char*)&i_ref_type );
 207
 208                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 209                 {
 210                     if( strstr( psz_ref, "qt5gateQT" ) )
 211                     {
 212                         msg_Dbg( p_input, "ignoring pseudo ref =`%s'", psz_ref );
 213                         continue;
 214                     }
 215                     if( !strncmp( psz_ref, "http://", 7 ) ||
 216                         !strncmp( psz_ref, "rtsp://", 7 ) )
 217                     {
 218                         msg_Dbg( p_input, "adding ref = `%s'", psz_ref );
 219                         playlist_Add( p_playlist, psz_ref, psz_ref,
 220                                       PLAYLIST_APPEND, PLAYLIST_END );
 221                     }
 222                     else
 223                     {
 224                         /* msg dbg relative ? */
 225                         char *psz_absolute = alloca( strlen( p_input->psz_source ) + strlen( psz_ref ) + 1);
 226                         char *end = strrchr( p_input->psz_source, '/' );
 227
 228                         if( end )
 229                         {
 230                             int i_len = end + 1 - p_input->psz_source;
 231
 232                             strncpy( psz_absolute, p_input->psz_source, i_len);
 233                             psz_absolute[i_len] = '\0';
 234                         }
 235                         else
 236                         {
 237                             strcpy( psz_absolute, "" );
 238                         }
 239                         strcat( psz_absolute, psz_ref );
 240                         msg_Dbg( p_input, "adding ref = `%s'", psz_absolute );
 241                         playlist_Add( p_playlist, psz_absolute, psz_absolute,
 242                                       PLAYLIST_APPEND, PLAYLIST_END );
 243                     }
 244                 }
 245                 else
 246                 {
 247                     msg_Err( p_input, "unknown ref type=%4.4s FIXME (send a bug report)", (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 248                 }
 249             }
 250             vlc_object_release( p_playlist );
 251         }
 252         else
 253         {
 254             msg_Err( p_input, "can't find playlist" );
 255         }
 256     }
 257
 258     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 259     {
 260         if( !p_rmra )
 261         {
 262             msg_Err( p_input, "cannot find /moov/mvhd" );
 263             goto error;
 264         }
 265         else
 266         {
 267             msg_Warn( p_input, "cannot find /moov/mvhd (pure ref file)" );
 268             p_input->pf_demux = DemuxRef;
 269             return VLC_SUCCESS;
 270         }
 271     }
 272     else
 273     {
 274         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 275         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 276     }
 277
 278     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 279     {
 280         msg_Err( p_input, "cannot find any /moov/trak" );
 281         goto error;
 282     }
 283     msg_Dbg( p_input, "find %d track%c",
 284                         p_sys->i_tracks,
 285                         p_sys->i_tracks ? 's':' ' );
 286
 287     /*  create one program */
 288     vlc_mutex_lock( &p_input->stream.stream_lock );
 289     if( input_InitStream( p_input, 0 ) == -1)
 290     {
 291         vlc_mutex_unlock( &p_input->stream.stream_lock );
 292         msg_Err( p_input, "cannot init stream" );
 293         goto error;
 294     }
 295     if( p_sys->i_duration/p_sys->i_timescale > 0 )
 296     {
 297         p_input->stream.i_mux_rate =
 298             p_input->stream.p_selected_area->i_size / 50 /
 299             ( p_sys->i_duration / p_sys->i_timescale );
 300     }
 301     else
 302     {
 303         p_input->stream.i_mux_rate = 0;
 304     }
 305     vlc_mutex_unlock( &p_input->stream.stream_lock );
 306
 307
 308     /* allocate memory */
 309     p_sys->track = calloc( p_sys->i_tracks, sizeof( track_data_mp4_t ) );
 310     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( track_data_mp4_t ) );
 311
 312     /* now process each track and extract all usefull informations */
 313     for( i = 0; i < p_sys->i_tracks; i++ )
 314     {
 315         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 316         MP4_TrackCreate( p_input, &p_sys->track[i], p_trak );
 317
 318         if( p_sys->track[i].b_ok )
 319         {
 320             char *psz_cat;
 321             switch( p_sys->track[i].fmt.i_cat )
 322             {
 323                 case( VIDEO_ES ):
 324                     psz_cat = "video";
 325                     break;
 326                 case( AUDIO_ES ):
 327                     psz_cat = "audio";
 328                     break;
 329                 default:
 330                     psz_cat = "unknown";
 331                     break;
 332             }
 333
 334             msg_Dbg( p_input, "adding track[Id 0x%x] %s (%s) language %s",
 335                             p_sys->track[i].i_track_ID,
 336                             psz_cat,
 337                             p_sys->track[i].b_enable ? "enable":"disable",
 338                             p_sys->track[i].fmt.psz_language ? p_sys->track[i].fmt.psz_language : "undef" );
 339         }
 340         else
 341         {
 342             msg_Dbg( p_input, "ignoring track[Id 0x%x]", p_sys->track[i].i_track_ID );
 343         }
 344
 345     }
 346     return VLC_SUCCESS;
 347
 348 error:
 349     if( p_sys->p_root )
 350     {
 351         MP4_BoxFree( p_input, p_sys->p_root );
 352     }
 353     free( p_sys );
 354     return VLC_EGENERIC;
 355 }
 356
 357 /*****************************************************************************
 358  * Demux: read packet and send them to decoders
 359  *****************************************************************************
 360  * TODO check for newly selected track (ie audio upt to now )
 361  *****************************************************************************/
 362 static int Demux( input_thread_t *p_input )
 363 {
 364     demux_sys_t *p_sys = p_input->p_demux_data;
 365     unsigned int i_track;
 366
 367
 368     unsigned int i_track_selected;
 369     vlc_bool_t   b_play_audio;
 370
 371     /* check for newly selected/unselected track */
 372     for( i_track = 0, i_track_selected = 0; i_track <  p_sys->i_tracks; i_track++ )
 373     {
 374 #define track   p_sys->track[i_track]
 375         if( track.b_selected && track.i_sample >= track.i_sample_count )
 376         {
 377             msg_Warn( p_input, "track[0x%x] will be disabled", track.i_track_ID );
 378             MP4_TrackUnselect( p_input, &track );
 379         }
 380         else if( track.b_ok )
 381         {
 382             vlc_bool_t b;
 383             es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, track.p_es, &b );
 384
 385             if( track.b_selected && !b )
 386             {
 387                 MP4_TrackUnselect( p_input, &track );
 388             }
 389             else if( !track.b_selected && b)
 390             {
 391                 MP4_TrackSelect( p_input, &track, MP4_GetMoviePTS( p_sys ) );
 392             }
 393
 394             if( track.b_selected )
 395             {
 396                 i_track_selected++;
 397             }
 398         }
 399 #undef  track
 400     }
 401
 402     if( i_track_selected <= 0 )
 403     {
 404         msg_Warn( p_input, "no track selected, exiting..." );
 405         return( 0 );
 406     }
 407
 408     /* first wait for the good time to read a packet */
 409     input_ClockManageRef( p_input,
 410                           p_input->stream.p_selected_program,
 411                           p_sys->i_pcr );
 412
 413     /* update pcr XXX in mpeg scale so in 90000 unit/s */
 414     p_sys->i_pcr = MP4_GetMoviePTS( p_sys ) * 9 / 100;
 415
 416     /* we will read 100ms for each stream so ...*/
 417     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 418
 419     /* Check if we need to send the audio data to decoder */
 420     b_play_audio = !p_input->stream.control.b_mute;
 421
 422     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 423     {
 424 #define track p_sys->track[i_track]
 425         if( !track.b_ok ||
 426             !track.b_selected ||
 427             MP4_GetTrackPTS( &track ) >= MP4_GetMoviePTS( p_sys ) )
 428         {
 429             continue;
 430         }
 431
 432         while( MP4_GetTrackPTS( &track ) < MP4_GetMoviePTS( p_sys ) )
 433         {
 434
 435             if( !b_play_audio && track.fmt.i_cat == AUDIO_ES )
 436             {
 437                 if( MP4_TrackNextSample( p_input, &track ) )
 438                 {
 439                     break;
 440                 }
 441             }
 442             else
 443             {
 444                 block_t *p_block;
 445
 446                 /* go,go go ! */
 447                 if( stream_Seek( p_input->s, MP4_GetTrackPos( &track ) ) )
 448                 {
 449                     msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", track.i_track_ID );
 450                     MP4_TrackUnselect( p_input, &track );
 451                     break;
 452                 }
 453
 454                 /* now read pes */
 455                 if( ( p_block = stream_Block( p_input->s,
 456                                               MP4_TrackSampleSize( &track ) ) ) == NULL )
 457                 {
 458                     msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", track.i_track_ID );
 459                     MP4_TrackUnselect( p_input, &track );
 460                     break;
 461                 }
 462
 463                 if( track.b_drms && track.p_drms )
 464                 {
 465                     drms_decrypt( track.p_drms,
 466                                   (uint32_t *)p_block->p_buffer,
 467                                   p_block->i_buffer );
 468                 }
 469
 470                 if( track.fmt.i_cat == VIDEO_ES )
 471                 {
 472                     /* FIXME sometime we can calculate PTS */
 473                     p_block->i_pts = 0;
 474                     p_block->i_dts =
 475                         input_ClockGetTS( p_input,
 476                                           p_input->stream.p_selected_program,
 477                                           MP4_GetTrackPTS( &track ) * 9/100 );
 478                 }
 479                 else
 480                 {
 481                     p_block->i_pts =
 482                     p_block->i_dts =
 483                         input_ClockGetTS( p_input,
 484                                           p_input->stream.p_selected_program,
 485                                           MP4_GetTrackPTS( &track ) * 9/100 );
 486                 }
 487
 488                 if( !track.b_drms || ( track.b_drms && track.p_drms ) )
 489                 {
 490                     es_out_Send( p_input->p_es_out, track.p_es, p_block );
 491                 }
 492
 493                 if( MP4_TrackNextSample( p_input, &track ) )
 494                 {
 495                     break;
 496                 }
 497             }
 498         }
 499 #undef track
 500     }
 501
 502     return( 1 );
 503 }
 504 /*****************************************************************************
 505  * Seek: Got to i_date
 506  ******************************************************************************/
 507 static int   Seek     ( input_thread_t *p_input, mtime_t i_date )
 508 {
 509     demux_sys_t *p_sys = p_input->p_demux_data;
 510     unsigned int i_track;
 511     /* First update update global time */
 512     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 513     p_sys->i_pcr  = i_date* 9 / 100;
 514
 515     /* Now for each stream try to go to this time */
 516     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 517     {
 518 #define track p_sys->track[i_track]
 519         if( track.b_ok && track.b_selected )
 520         {
 521             MP4_TrackSeek( p_input, &track, i_date );
 522         }
 523 #undef  track
 524     }
 525     return( 1 );
 526 }
 527
 528 /*****************************************************************************
 529  * Control:
 530  *****************************************************************************/
 531 static int   Control  ( input_thread_t *p_input, int i_query, va_list args )
 532 {
 533     demux_sys_t *p_sys = p_input->p_demux_data;
 534
 535     double   f, *pf;
 536     int64_t i64, *pi64;
 537
 538     switch( i_query )
 539     {
 540         case DEMUX_GET_POSITION:
 541             pf = (double*)va_arg( args, double * );
 542             if( p_sys->i_duration > 0 )
 543             {
 544                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 545             }
 546             else
 547             {
 548                 *pf = 0.0;
 549             }
 550             return VLC_SUCCESS;
 551
 552         case DEMUX_SET_POSITION:
 553             f = (double)va_arg( args, double );
 554             i64 = (int64_t)( f *
 555                              (double)1000000 *
 556                              (double)p_sys->i_duration /
 557                              (double)p_sys->i_timescale );
 558             return Seek( p_input, i64 );
 559
 560         case DEMUX_GET_TIME:
 561             pi64 = (int64_t*)va_arg( args, int64_t * );
 562             *pi64 = (mtime_t)1000000 *
 563                     (mtime_t)p_sys->i_time /
 564                     (mtime_t)p_sys->i_timescale;
 565             return VLC_SUCCESS;
 566
 567         case DEMUX_SET_TIME:
 568             i64 = (int64_t)va_arg( args, int64_t );
 569             return Seek( p_input, i64 );
 570
 571         case DEMUX_GET_LENGTH:
 572             pi64 = (int64_t*)va_arg( args, int64_t * );
 573             *pi64 = (mtime_t)1000000 *
 574                     (mtime_t)p_sys->i_duration /
 575                     (mtime_t)p_sys->i_timescale;
 576             return VLC_SUCCESS;
 577         case DEMUX_GET_FPS:
 578             msg_Warn( p_input, "DEMUX_GET_FPS unimplemented !!" );
 579             return VLC_EGENERIC;
 580         default:
 581             msg_Err( p_input, "control query unimplemented !!!" );
 582             return demux_vaControlDefault( p_input, i_query, args );
 583     }
 584 }
 585
 586 /*****************************************************************************
 587  * Close: frees unused data
 588  *****************************************************************************/
 589 static void Close ( vlc_object_t * p_this )
 590 {
 591     unsigned int i_track;
 592     input_thread_t *  p_input = (input_thread_t *)p_this;
 593     demux_sys_t *p_sys = p_input->p_demux_data;
 594
 595     msg_Dbg( p_input, "freeing all memory" );
 596
 597     MP4_BoxFree( p_input, p_sys->p_root );
 598     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 599     {
 600         MP4_TrackDestroy( p_input, &p_sys->track[i_track] );
 601     }
 602     FREE( p_sys->track );
 603
 604     free( p_sys );
 605 }
 606
 607
 608
 609 /****************************************************************************
 610  * Local functions, specific to vlc
 611  ****************************************************************************/
 612
 613 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 614 static int TrackCreateChunksIndex( input_thread_t *p_input,
 615                                    track_data_mp4_t *p_demux_track )
 616 {
 617     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 618     MP4_Box_t *p_stsc;
 619
 620     unsigned int i_chunk;
 621     unsigned int i_index, i_last;
 622
 623     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 624           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 625         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 626     {
 627         return( VLC_EGENERIC );
 628     }
 629
 630     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 631     if( !p_demux_track->i_chunk_count )
 632     {
 633         msg_Warn( p_input, "no chunk defined" );
 634         return( VLC_EGENERIC );
 635     }
 636     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 637                                    sizeof( chunk_data_mp4_t ) );
 638
 639     /* first we read chunk offset */
 640     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 641     {
 642         p_demux_track->chunk[i_chunk].i_offset =
 643                 p_co64->data.p_co64->i_chunk_offset[i_chunk];
 644     }
 645
 646     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 647         to be used for the sample XXX begin to 1
 648         We construct it begining at the end */
 649     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 650     i_index = p_stsc->data.p_stsc->i_entry_count;
 651     if( !i_index )
 652     {
 653         msg_Warn( p_input, "cannot read chunk table or table empty" );
 654         return( VLC_EGENERIC );
 655     }
 656
 657     while( i_index )
 658     {
 659         i_index--;
 660         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 661                 i_chunk < i_last; i_chunk++ )
 662         {
 663             p_demux_track->chunk[i_chunk].i_sample_description_index =
 664                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 665             p_demux_track->chunk[i_chunk].i_sample_count =
 666                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 667         }
 668         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 669     }
 670
 671     p_demux_track->chunk[0].i_sample_first = 0;
 672     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 673     {
 674         p_demux_track->chunk[i_chunk].i_sample_first =
 675             p_demux_track->chunk[i_chunk-1].i_sample_first +
 676                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 677     }
 678
 679     msg_Dbg( p_input,
 680              "track[Id 0x%x] read %d chunk",
 681              p_demux_track->i_track_ID,
 682             p_demux_track->i_chunk_count );
 683
 684     return( VLC_SUCCESS );
 685 }
 686 static int TrackCreateSamplesIndex( input_thread_t *p_input,
 687                                     track_data_mp4_t *p_demux_track )
 688 {
 689     MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
 690                           ctts make same mapping but for composition time,
 691                           not yet used and probably not usefull */
 692     MP4_Box_t *p_stsz; /* gives sample size of each samples, there is also stz2
 693                           that uses a compressed form FIXME make them in libmp4
 694                           as a unique type */
 695     /* TODO use also stss and stsh table for seeking */
 696     /* FIXME use edit table */
 697     int64_t i_sample;
 698     int64_t i_chunk;
 699
 700     int64_t i_index;
 701     int64_t i_index_sample_used;
 702
 703     int64_t i_last_dts;
 704
 705     p_stts = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
 706     p_stsz = MP4_BoxGet( p_demux_track->p_stbl, "stsz" ); /* FIXME and stz2 */
 707
 708     if( ( !p_stts )||( !p_stsz ) )
 709     {
 710         msg_Warn( p_input, "cannot read sample table" );
 711         return( VLC_EGENERIC );
 712     }
 713
 714     p_demux_track->i_sample_count = p_stsz->data.p_stsz->i_sample_count;
 715
 716
 717     /* for sample size, there are 2 case */
 718     if( p_stsz->data.p_stsz->i_sample_size )
 719     {
 720         /* 1: all sample have the same size, so no need to construct a table */
 721         p_demux_track->i_sample_size = p_stsz->data.p_stsz->i_sample_size;
 722         p_demux_track->p_sample_size = NULL;
 723     }
 724     else
 725     {
 726         /* 2: each sample can have a different size */
 727         p_demux_track->i_sample_size = 0;
 728         p_demux_track->p_sample_size =
 729             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
 730
 731         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
 732         {
 733             p_demux_track->p_sample_size[i_sample] =
 734                     p_stsz->data.p_stsz->i_entry_size[i_sample];
 735         }
 736     }
 737     /* we have extract all information from stsz,
 738         now use stts */
 739
 740     /* if we don't want to waste too much memory, we can't expand
 741        the box !, so each chunk will contain an "extract" of this table
 742        for fast research */
 743
 744     i_last_dts = 0;
 745     i_index = 0; i_index_sample_used =0;
 746
 747     /* create and init last data for each chunk */
 748     for(i_chunk = 0 ; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 749     {
 750
 751         int64_t i_entry, i_sample_count, i;
 752         /* save last dts */
 753         p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
 754     /* count how many entries needed for this chunk
 755        for p_sample_delta_dts and p_sample_count_dts */
 756
 757         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 758
 759         i_entry = 0;
 760         while( i_sample_count > 0 )
 761         {
 762             i_sample_count -= p_stts->data.p_stts->i_sample_count[i_index+i_entry];
 763             if( i_entry == 0 )
 764             {
 765                 i_sample_count += i_index_sample_used; /* don't count already used sample
 766                                                    int this entry */
 767             }
 768             i_entry++;
 769         }
 770
 771         /* allocate them */
 772         p_demux_track->chunk[i_chunk].p_sample_count_dts =
 773             calloc( i_entry, sizeof( uint32_t ) );
 774         p_demux_track->chunk[i_chunk].p_sample_delta_dts =
 775             calloc( i_entry, sizeof( uint32_t ) );
 776
 777         /* now copy */
 778         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 779         for( i = 0; i < i_entry; i++ )
 780         {
 781             int64_t i_used;
 782             int64_t i_rest;
 783
 784             i_rest = p_stts->data.p_stts->i_sample_count[i_index] - i_index_sample_used;
 785
 786             i_used = __MIN( i_rest, i_sample_count );
 787
 788             i_index_sample_used += i_used;
 789             i_sample_count -= i_used;
 790
 791             p_demux_track->chunk[i_chunk].p_sample_count_dts[i] = i_used;
 792
 793             p_demux_track->chunk[i_chunk].p_sample_delta_dts[i] =
 794                         p_stts->data.p_stts->i_sample_delta[i_index];
 795
 796             i_last_dts += i_used *
 797                     p_demux_track->chunk[i_chunk].p_sample_delta_dts[i];
 798
 799             if( i_index_sample_used >=
 800                              p_stts->data.p_stts->i_sample_count[i_index] )
 801             {
 802
 803                 i_index++;
 804                 i_index_sample_used = 0;
 805             }
 806         }
 807
 808     }
 809
 810     msg_Dbg( p_input,
 811              "track[Id 0x%x] read %d samples length:"I64Fd"s",
 812              p_demux_track->i_track_ID,
 813              p_demux_track->i_sample_count,
 814              i_last_dts / p_demux_track->i_timescale );
 815
 816     return( VLC_SUCCESS );
 817 }
 818
 819 /*
 820  * TrackCreateES:
 821  *  Create ES and PES to init decoder if needed, for a track starting at i_chunk
 822  */
 823 static int  TrackCreateES   ( input_thread_t   *p_input,
 824                               track_data_mp4_t *p_track,
 825                               unsigned int     i_chunk,
 826                               es_out_id_t      **pp_es )
 827 {
 828     MP4_Box_t   *p_sample;
 829     MP4_Box_t   *p_esds;
 830
 831     *pp_es = NULL;
 832
 833     if( !p_track->chunk[i_chunk].i_sample_description_index )
 834     {
 835         msg_Warn( p_input,
 836                   "invalid SampleEntry index (track[Id 0x%x])",
 837                   p_track->i_track_ID );
 838         return VLC_EGENERIC;
 839     }
 840
 841     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
 842                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
 843
 844     if( !p_sample || !p_sample->data.p_data )
 845     {
 846         msg_Warn( p_input,
 847                   "cannot find SampleEntry (track[Id 0x%x])",
 848                   p_track->i_track_ID );
 849         return( VLC_EGENERIC );
 850     }
 851
 852     p_track->p_sample = p_sample;
 853
 854     if( p_track->i_sample_size == 1 )
 855     {
 856         MP4_Box_data_sample_soun_t *p_soun;
 857
 858         p_soun = p_sample->data.p_sample_soun;
 859
 860         if( p_soun->i_qt_version == 0 )
 861         {
 862             switch( p_sample->i_type )
 863             {
 864                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
 865                     p_soun->i_qt_version = 1;
 866                     p_soun->i_sample_per_packet = 64;
 867                     p_soun->i_bytes_per_packet  = 34;
 868                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
 869                     p_soun->i_bytes_per_sample  = 2;
 870                     break;
 871                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
 872                     p_soun->i_qt_version = 1;
 873                     p_soun->i_sample_per_packet = 6;
 874                     p_soun->i_bytes_per_packet  = 2;
 875                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
 876                     p_soun->i_bytes_per_sample  = 2;
 877                     break;
 878                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
 879                     p_soun->i_qt_version = 1;
 880                     p_soun->i_sample_per_packet = 12;
 881                     p_soun->i_bytes_per_packet  = 2;
 882                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
 883                     p_soun->i_bytes_per_sample  = 2;
 884                     break;
 885                 default:
 886                     break;
 887             }
 888
 889         }
 890         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
 891         {
 892             p_soun->i_qt_version = 0;
 893         }
 894     }
 895
 896
 897     /* It's a little ugly but .. there are special cases */
 898     switch( p_sample->i_type )
 899     {
 900         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
 901         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
 902             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
 903             break;
 904         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
 905             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
 906             break;
 907         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
 908             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
 909             break;
 910         default:
 911             p_track->fmt.i_codec = p_sample->i_type;
 912             break;
 913     }
 914
 915     /* now see if esds is present and if so create a data packet
 916         with decoder_specific_info  */
 917 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
 918     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
 919           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
 920         ( p_esds->data.p_esds )&&
 921         ( p_decconfig ) )
 922     {
 923         /* First update information based on i_objectTypeIndication */
 924         switch( p_decconfig->i_objectTypeIndication )
 925         {
 926             case( 0x20 ): /* MPEG4 VIDEO */
 927                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
 928                 break;
 929             case( 0x40):
 930                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
 931                 break;
 932             case( 0x60):
 933             case( 0x61):
 934             case( 0x62):
 935             case( 0x63):
 936             case( 0x64):
 937             case( 0x65): /* MPEG2 video */
 938                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
 939                 break;
 940             /* Theses are MPEG2-AAC */
 941             case( 0x66): /* main profile */
 942             case( 0x67): /* Low complexity profile */
 943             case( 0x68): /* Scaleable Sampling rate profile */
 944                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
 945                 break;
 946             /* true MPEG 2 audio */
 947             case( 0x69):
 948                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
 949                 break;
 950             case( 0x6a): /* MPEG1 video */
 951                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
 952                 break;
 953             case( 0x6b): /* MPEG1 audio */
 954                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
 955                 break;
 956             case( 0x6c ): /* jpeg */
 957                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
 958                 break;
 959             default:
 960                 /* Unknown entry, but don't touch i_fourcc */
 961                 msg_Warn( p_input,
 962                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
 963                           p_decconfig->i_objectTypeIndication,
 964                           p_track->i_track_ID );
 965                 break;
 966         }
 967         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
 968         if( p_track->fmt.i_extra > 0 )
 969         {
 970             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
 971             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
 972                     p_track->fmt.i_extra );
 973         }
 974     }
 975     else
 976     {
 977         switch( p_sample->i_type )
 978         {
 979             /* qt decoder, send the complete chunk */
 980             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
 981             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
 982             case VLC_FOURCC( 'V', 'P', '3', '1' ):
 983             case VLC_FOURCC( '3', 'I', 'V', '1' ):
 984             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
 985                 p_track->fmt.i_extra =
 986                     p_sample->data.p_sample_vide->i_qt_image_description;
 987                 if( p_track->fmt.i_extra > 0 )
 988                 {
 989                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
 990                     memcpy( p_track->fmt.p_extra,
 991                             p_sample->data.p_sample_vide->p_qt_image_description,
 992                             p_track->fmt.i_extra);
 993                 }
 994                 break;
 995             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
 996             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
 997             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
 998             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
 999                 p_track->fmt.i_extra =
1000                     p_sample->data.p_sample_soun->i_qt_description;
1001                 if( p_track->fmt.i_extra > 0 )
1002                 {
1003                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1004                     memcpy( p_track->fmt.p_extra,
1005                             p_sample->data.p_sample_soun->p_qt_description,
1006                             p_track->fmt.i_extra);
1007                 }
1008                 break;
1009             default:
1010                 break;
1011         }
1012     }
1013
1014 #undef p_decconfig
1015
1016     /* some last initialisation */
1017     switch( p_track->fmt.i_cat )
1018     {
1019     case( VIDEO_ES ):
1020         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1021         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1022
1023         /* fall on display size */
1024         if( p_track->fmt.video.i_width <= 0 )
1025             p_track->fmt.video.i_width = p_track->i_width;
1026         if( p_track->fmt.video.i_height <= 0 )
1027             p_track->fmt.video.i_height = p_track->i_height;
1028
1029         /* Find out apect ratio from display size */
1030         if( p_track->i_width > 0 && p_track->i_height > 0 )
1031             p_track->fmt.video.i_aspect =
1032                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1033
1034         break;
1035
1036     case( AUDIO_ES ):
1037         p_track->fmt.audio.i_channels =
1038             p_sample->data.p_sample_soun->i_channelcount;
1039         p_track->fmt.audio.i_rate =
1040             p_sample->data.p_sample_soun->i_sampleratehi;
1041         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1042             p_sample->data.p_sample_soun->i_sampleratehi *
1043                 p_sample->data.p_sample_soun->i_samplesize;
1044         p_track->fmt.audio.i_bitspersample =
1045             p_sample->data.p_sample_soun->i_samplesize;
1046         break;
1047
1048     default:
1049         break;
1050     }
1051
1052     *pp_es = es_out_Add( p_input->p_es_out, &p_track->fmt );
1053
1054     return VLC_SUCCESS;
1055 }
1056
1057 /* given a time it return sample/chunk */
1058 static int  TrackTimeToSampleChunk( input_thread_t *p_input,
1059                                     track_data_mp4_t *p_track,
1060                                     uint64_t i_start,
1061                                     uint32_t *pi_chunk,
1062                                     uint32_t *pi_sample )
1063 {
1064     MP4_Box_t    *p_stss;
1065     uint64_t     i_dts;
1066     unsigned int i_sample;
1067     unsigned int i_chunk;
1068     int          i_index;
1069
1070     /* convert absolute time to in timescale unit */
1071     i_start = i_start * (mtime_t)p_track->i_timescale / (mtime_t)1000000;
1072
1073     /* FIXME see if it's needed to check p_track->i_chunk_count */
1074     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1075     {
1076         return( VLC_EGENERIC );
1077     }
1078
1079     /* we start from sample 0/chunk 0, hope it won't take too much time */
1080     /* *** find good chunk *** */
1081     for( i_chunk = 0; ; i_chunk++ )
1082     {
1083         if( i_chunk + 1 >= p_track->i_chunk_count )
1084         {
1085             /* at the end and can't check if i_start in this chunk,
1086                it will be check while searching i_sample */
1087             i_chunk = p_track->i_chunk_count - 1;
1088             break;
1089         }
1090
1091         if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1092             i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1093         {
1094             break;
1095         }
1096     }
1097
1098     /* *** find sample in the chunk *** */
1099     i_sample = p_track->chunk[i_chunk].i_sample_first;
1100     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1101     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1102     {
1103         if( i_dts +
1104             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1105             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1106         {
1107             i_dts    +=
1108                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1109                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1110
1111             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1112             i_index++;
1113         }
1114         else
1115         {
1116             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1117             {
1118                 break;
1119             }
1120             i_sample += ( i_start - i_dts ) / p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1121             break;
1122         }
1123     }
1124
1125     if( i_sample >= p_track->i_sample_count )
1126     {
1127         msg_Warn( p_input,
1128                   "track[Id 0x%x] will be disabled (seeking too far) chunk=%d sample=%d",
1129                   p_track->i_track_ID, i_chunk, i_sample );
1130         return( VLC_EGENERIC );
1131     }
1132
1133
1134     /* *** Try to find nearest sync points *** */
1135     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1136     {
1137         unsigned int i_index;
1138         msg_Dbg( p_input,
1139                     "track[Id 0x%x] using Sync Sample Box (stss)",
1140                     p_track->i_track_ID );
1141         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1142         {
1143             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1144             {
1145                 if( i_index > 0 )
1146                 {
1147                     msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1148                             i_sample,
1149                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1150                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1151                     /* new i_sample is less than old so i_chunk can only decreased */
1152                     while( i_chunk > 0 &&
1153                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1154                     {
1155                         i_chunk--;
1156                     }
1157                 }
1158                 else
1159                 {
1160                     msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1161                             i_sample,
1162                             p_stss->data.p_stss->i_sample_number[i_index] );
1163                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1164                     /* new i_sample is more than old so i_chunk can only increased */
1165                     while( i_chunk < p_track->i_chunk_count - 1 &&
1166                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1167                                                 p_track->chunk[i_chunk].i_sample_count )
1168                     {
1169                         i_chunk++;
1170                     }
1171                 }
1172                 break;
1173             }
1174         }
1175     }
1176     else
1177     {
1178         msg_Dbg( p_input,
1179                     "track[Id 0x%x] does not provide Sync Sample Box (stss)",
1180                     p_track->i_track_ID );
1181     }
1182
1183     if( pi_chunk  ) *pi_chunk  = i_chunk;
1184     if( pi_sample ) *pi_sample = i_sample;
1185     return( VLC_SUCCESS );
1186 }
1187
1188 static int  TrackGotoChunkSample( input_thread_t   *p_input,
1189                                   track_data_mp4_t *p_track,
1190                                   unsigned int     i_chunk,
1191                                   unsigned int     i_sample )
1192 {
1193     vlc_bool_t b_reselect = VLC_FALSE;
1194
1195     /* now see if actual es is ok */
1196     if( p_track->i_chunk < 0 ||
1197         p_track->i_chunk >= p_track->i_chunk_count ||
1198         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1199             p_track->chunk[i_chunk].i_sample_description_index )
1200     {
1201         msg_Warn( p_input, "Recreate ES" );
1202
1203         es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, p_track->p_es, &b_reselect );
1204
1205         es_out_Del( p_input->p_es_out, p_track->p_es );
1206
1207         p_track->p_es = NULL;
1208
1209         if( TrackCreateES( p_input,
1210                            p_track, i_chunk,
1211                            &p_track->p_es ) )
1212         {
1213             msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1214                      p_track->i_track_ID );
1215
1216             p_track->b_ok       = VLC_FALSE;
1217             p_track->b_selected = VLC_FALSE;
1218             return VLC_EGENERIC;
1219         }
1220     }
1221
1222     /* select again the new decoder */
1223     if( b_reselect )
1224     {
1225         es_out_Control( p_input->p_es_out, ES_OUT_SET_ES, p_track->p_es );
1226     }
1227
1228     p_track->i_chunk    = i_chunk;
1229     p_track->i_sample   = i_sample;
1230
1231     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1232 }
1233
1234 /****************************************************************************
1235  * MP4_TrackCreate:
1236  ****************************************************************************
1237  * Parse track information and create all needed data to run a track
1238  * If it succeed b_ok is set to 1 else to 0
1239  ****************************************************************************/
1240 static void MP4_TrackCreate( input_thread_t *p_input,
1241                              track_data_mp4_t *p_track,
1242                              MP4_Box_t  * p_box_trak )
1243 {
1244     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1245     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1246     MP4_Box_t *p_elst;
1247
1248     MP4_Box_t *p_mdhd;
1249     MP4_Box_t *p_hdlr;
1250
1251     MP4_Box_t *p_vmhd;
1252     MP4_Box_t *p_smhd;
1253
1254     MP4_Box_t *p_drms;
1255
1256     unsigned int i;
1257     char language[4];
1258
1259     /* hint track unsuported */
1260
1261     /* set default value (-> track unusable) */
1262     p_track->b_ok       = VLC_FALSE;
1263     p_track->b_enable   = VLC_FALSE;
1264     p_track->b_selected = VLC_FALSE;
1265
1266     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1267
1268     if( !p_tkhd )
1269     {
1270         return;
1271     }
1272
1273     /* do we launch this track by default ? */
1274     p_track->b_enable =
1275         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1276
1277     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1278     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1279     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1280
1281     if( ( p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1282     {
1283 /*        msg_Warn( p_input, "unhandled box: edts --> FIXME" ); */
1284     }
1285
1286     if( p_tref )
1287     {
1288 /*        msg_Warn( p_input, "unhandled box: tref --> FIXME" ); */
1289     }
1290
1291     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1292     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1293
1294     if( ( !p_mdhd )||( !p_hdlr ) )
1295     {
1296         return;
1297     }
1298
1299     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1300
1301     for( i = 0; i < 3; i++ )
1302     {
1303         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1304     }
1305     language[3] = '\0';
1306
1307     switch( p_hdlr->data.p_hdlr->i_handler_type )
1308     {
1309         case( FOURCC_soun ):
1310             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1311             {
1312                 return;
1313             }
1314             p_track->fmt.i_cat = AUDIO_ES;
1315             break;
1316
1317         case( FOURCC_vide ):
1318             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1319             {
1320                 return;
1321             }
1322             p_track->fmt.i_cat = VIDEO_ES;
1323             break;
1324
1325         default:
1326             return;
1327     }
1328 /*  TODO
1329     add support for:
1330     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1331 */
1332     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1333         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1334     {
1335         return;
1336     }
1337
1338     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1339     p_track->b_drms = p_drms != NULL;
1340     p_track->p_drms = p_track->b_drms ?
1341         p_drms->data.p_sample_soun->p_drms : NULL;
1342
1343     /* Set language */
1344     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1345     {
1346         p_track->fmt.psz_language = strdup( language );
1347     }
1348
1349     /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1350     if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1351     {
1352         MP4_Box_t *p_sample;
1353
1354         p_sample = MP4_BoxGet(  p_track->p_stsd, "[0]" );
1355         if( p_sample && p_sample->data.p_sample_soun)
1356         {
1357             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1358             if( p_soun->i_qt_version == 0 &&
1359                 p_track->i_timescale != p_soun->i_sampleratehi )
1360             {
1361                 msg_Warn( p_input,
1362                           "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1363                           "qt_version == 0\n"
1364                           "Making both equal. (report any problem)",
1365                           p_track->i_timescale, p_soun->i_sampleratehi );
1366
1367                 if( p_soun->i_sampleratehi )
1368                     p_track->i_timescale = p_soun->i_sampleratehi;
1369                 else
1370                     p_soun->i_sampleratehi = p_track->i_timescale;
1371             }
1372         }
1373     }
1374
1375     /* Create chunk index table and sample index table */
1376     if( TrackCreateChunksIndex( p_input,p_track  ) ||
1377         TrackCreateSamplesIndex( p_input, p_track ) )
1378     {
1379         return; /* cannot create chunks index */
1380     }
1381
1382     p_track->i_chunk  = 0;
1383     p_track->i_sample = 0;
1384
1385     /* now create es */
1386     if( TrackCreateES( p_input,
1387                        p_track, p_track->i_chunk,
1388                        &p_track->p_es ) )
1389     {
1390         msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1391                  p_track->i_track_ID );
1392         return;
1393     }
1394
1395 #if 0
1396     {
1397         int i;
1398         for( i = 0; i < p_track->i_chunk_count; i++ )
1399         {
1400             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n", i, p_track->chunk[i].i_sample_count, p_track->chunk[i].i_first_dts );
1401
1402         }
1403     }
1404 #endif
1405     p_track->b_ok = VLC_TRUE;
1406 }
1407
1408 /****************************************************************************
1409  * MP4_TrackDestroy:
1410  ****************************************************************************
1411  * Destroy a track created by MP4_TrackCreate.
1412  ****************************************************************************/
1413 static void MP4_TrackDestroy( input_thread_t *p_input,
1414                               track_data_mp4_t *p_track )
1415 {
1416     unsigned int i_chunk;
1417
1418     p_track->b_ok = VLC_FALSE;
1419     p_track->b_enable   = VLC_FALSE;
1420     p_track->b_selected = VLC_FALSE;
1421
1422     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1423
1424     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1425     {
1426         if( p_track->chunk )
1427         {
1428            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1429            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1430         }
1431     }
1432     FREE( p_track->chunk );
1433
1434     if( !p_track->i_sample_size )
1435     {
1436         FREE( p_track->p_sample_size );
1437     }
1438 }
1439
1440 static int  MP4_TrackSelect ( input_thread_t    *p_input,
1441                               track_data_mp4_t  *p_track,
1442                               mtime_t           i_start )
1443 {
1444     uint32_t i_chunk;
1445     uint32_t i_sample;
1446
1447     if( !p_track->b_ok )
1448     {
1449         return( VLC_EGENERIC );
1450     }
1451
1452     if( p_track->b_selected )
1453     {
1454         msg_Warn( p_input,
1455                   "track[Id 0x%x] already selected",
1456                   p_track->i_track_ID );
1457         return( VLC_SUCCESS );
1458     }
1459
1460     if( TrackTimeToSampleChunk( p_input,
1461                                 p_track, i_start,
1462                                 &i_chunk, &i_sample ) )
1463     {
1464         msg_Warn( p_input,
1465                   "cannot select track[Id 0x%x]",
1466                   p_track->i_track_ID );
1467         return( VLC_EGENERIC );
1468     }
1469
1470     p_track->b_selected = VLC_TRUE;
1471
1472     if( TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample ) )
1473     {
1474         p_track->b_selected = VLC_FALSE;
1475     }
1476     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1477 }
1478
1479 static void MP4_TrackUnselect(input_thread_t    *p_input,
1480                               track_data_mp4_t  *p_track )
1481 {
1482     if( !p_track->b_ok )
1483     {
1484         return;
1485     }
1486
1487     if( !p_track->b_selected )
1488     {
1489         msg_Warn( p_input,
1490                   "track[Id 0x%x] already unselected",
1491                   p_track->i_track_ID );
1492         return;
1493     }
1494     if( p_track->p_es )
1495     {
1496         es_out_Control( p_input->p_es_out, ES_OUT_SET_ES_STATE, p_track->p_es, VLC_FALSE );
1497     }
1498
1499     p_track->b_selected = VLC_FALSE;
1500 }
1501
1502 static int  MP4_TrackSeek   ( input_thread_t    *p_input,
1503                               track_data_mp4_t  *p_track,
1504                               mtime_t           i_start )
1505 {
1506     uint32_t i_chunk;
1507     uint32_t i_sample;
1508
1509     if( !p_track->b_ok )
1510     {
1511         return( VLC_EGENERIC );
1512     }
1513
1514     if( TrackTimeToSampleChunk( p_input,
1515                                 p_track, i_start,
1516                                 &i_chunk, &i_sample ) )
1517     {
1518         msg_Warn( p_input,
1519                   "cannot select track[Id 0x%x]",
1520                   p_track->i_track_ID );
1521         return( VLC_EGENERIC );
1522     }
1523
1524     p_track->b_selected = VLC_TRUE;
1525
1526     TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample );
1527
1528     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1529 }
1530
1531
1532
1533
1534
1535 /*
1536  * 3 types: for audio
1537  *
1538  */
1539 #define QT_V0_MAX_SAMPLES    1500
1540 static int  MP4_TrackSampleSize( track_data_mp4_t   *p_track )
1541 {
1542     int i_size;
1543     MP4_Box_data_sample_soun_t *p_soun;
1544
1545     if( p_track->i_sample_size == 0 )
1546     {
1547         /* most simple case */
1548         return( p_track->p_sample_size[p_track->i_sample] );
1549     }
1550     if( p_track->fmt.i_cat != AUDIO_ES )
1551     {
1552         return( p_track->i_sample_size );
1553     }
1554
1555     if( p_track->i_sample_size != 1 )
1556     {
1557         //msg_Warn( p_input, "SampleSize != 1" );
1558         return( p_track->i_sample_size );
1559     }
1560
1561     p_soun = p_track->p_sample->data.p_sample_soun;
1562
1563     if( p_soun->i_qt_version == 1 )
1564     {
1565         i_size = p_track->chunk[p_track->i_chunk].i_sample_count / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
1566     }
1567     else
1568     {
1569         /* FIXME */
1570         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
1571                 ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first );
1572         if( i_samples > QT_V0_MAX_SAMPLES )
1573         {
1574             i_samples = QT_V0_MAX_SAMPLES;
1575         }
1576         i_size = i_samples * p_soun->i_channelcount * p_soun->i_samplesize / 8;
1577     }
1578
1579     //fprintf( stderr, "size=%d\n", i_size );
1580     return( i_size );
1581 }
1582
1583
1584 static uint64_t MP4_GetTrackPos( track_data_mp4_t *p_track )
1585 {
1586     unsigned int i_sample;
1587     uint64_t i_pos;
1588
1589
1590     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
1591
1592     if( p_track->i_sample_size )
1593     {
1594         MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
1595
1596         if( p_soun->i_qt_version == 0 )
1597         {
1598             i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) *
1599                         p_soun->i_channelcount * p_soun->i_samplesize / 8;
1600         }
1601         else
1602         {
1603             /* we read chunk by chunk */
1604             i_pos += 0;
1605         }
1606     }
1607     else
1608     {
1609         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
1610                 i_sample < p_track->i_sample; i_sample++ )
1611         {
1612             i_pos += p_track->p_sample_size[i_sample];
1613         }
1614
1615     }
1616     return( i_pos );
1617 }
1618
1619 static int  MP4_TrackNextSample( input_thread_t     *p_input,
1620                                  track_data_mp4_t   *p_track )
1621 {
1622
1623     if( p_track->fmt.i_cat == AUDIO_ES &&
1624         p_track->i_sample_size != 0 )
1625     {
1626         MP4_Box_data_sample_soun_t *p_soun;
1627
1628         p_soun = p_track->p_sample->data.p_sample_soun;
1629
1630         if( p_soun->i_qt_version == 1 )
1631         {
1632             /* chunk by chunk */
1633             p_track->i_sample =
1634                 p_track->chunk[p_track->i_chunk].i_sample_first +
1635                 p_track->chunk[p_track->i_chunk].i_sample_count;
1636         }
1637         else
1638         {
1639             /* FIXME */
1640             p_track->i_sample += QT_V0_MAX_SAMPLES;
1641             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 )
1642             {
1643                 p_track->i_sample =
1644                     p_track->chunk[p_track->i_chunk].i_sample_first +
1645                     p_track->chunk[p_track->i_chunk].i_sample_count;
1646             }
1647         }
1648     }
1649     else
1650     {
1651         p_track->i_sample++;
1652     }
1653
1654     if( p_track->i_sample >= p_track->i_sample_count )
1655     {
1656         /* we have reach end of the track so free decoder stuff */
1657         msg_Warn( p_input, "track[0x%x] will be disabled", p_track->i_track_ID );
1658         MP4_TrackUnselect( p_input, p_track );
1659         return( VLC_EGENERIC );
1660     }
1661
1662     /* Have we changed chunk ? */
1663     if( p_track->i_sample >=
1664             p_track->chunk[p_track->i_chunk].i_sample_first +
1665             p_track->chunk[p_track->i_chunk].i_sample_count )
1666     {
1667         if( TrackGotoChunkSample( p_input,
1668                                   p_track,
1669                                   p_track->i_chunk + 1,
1670                                   p_track->i_sample ) )
1671         {
1672             msg_Warn( p_input, "track[0x%x] will be disabled (cannot restart decoder)", p_track->i_track_ID );
1673             MP4_TrackUnselect( p_input, p_track );
1674             return( VLC_EGENERIC );
1675         }
1676     }
1677
1678     return( VLC_SUCCESS );
1679 }
1680
1681