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 1.48 2004/01/05 13:07:02 zorglub 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.p_drms != NULL )
 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                 es_out_Send( p_input->p_es_out, track.p_es, p_block );
 489
 490                 if( MP4_TrackNextSample( p_input, &track ) )
 491                 {
 492                     break;
 493                 }
 494             }
 495         }
 496 #undef track
 497     }
 498
 499     return( 1 );
 500 }
 501 /*****************************************************************************
 502  * Seek: Got to i_date
 503  ******************************************************************************/
 504 static int   Seek     ( input_thread_t *p_input, mtime_t i_date )
 505 {
 506     demux_sys_t *p_sys = p_input->p_demux_data;
 507     unsigned int i_track;
 508     /* First update update global time */
 509     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 510     p_sys->i_pcr  = i_date* 9 / 100;
 511
 512     /* Now for each stream try to go to this time */
 513     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 514     {
 515 #define track p_sys->track[i_track]
 516         if( track.b_ok && track.b_selected )
 517         {
 518             MP4_TrackSeek( p_input, &track, i_date );
 519         }
 520 #undef  track
 521     }
 522     return( 1 );
 523 }
 524
 525 /*****************************************************************************
 526  * Control:
 527  *****************************************************************************/
 528 static int   Control  ( input_thread_t *p_input, int i_query, va_list args )
 529 {
 530     demux_sys_t *p_sys = p_input->p_demux_data;
 531
 532     double   f, *pf;
 533     int64_t i64, *pi64;
 534
 535     switch( i_query )
 536     {
 537         case DEMUX_GET_POSITION:
 538             pf = (double*)va_arg( args, double * );
 539             if( p_sys->i_duration > 0 )
 540             {
 541                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 542             }
 543             else
 544             {
 545                 *pf = 0.0;
 546             }
 547             return VLC_SUCCESS;
 548
 549         case DEMUX_SET_POSITION:
 550             f = (double)va_arg( args, double );
 551             i64 = (int64_t)( f *
 552                              (double)1000000 *
 553                              (double)p_sys->i_duration /
 554                              (double)p_sys->i_timescale );
 555             return Seek( p_input, i64 );
 556
 557         case DEMUX_GET_TIME:
 558             pi64 = (int64_t*)va_arg( args, int64_t * );
 559             *pi64 = (mtime_t)1000000 *
 560                     (mtime_t)p_sys->i_time /
 561                     (mtime_t)p_sys->i_timescale;
 562             return VLC_SUCCESS;
 563
 564         case DEMUX_SET_TIME:
 565             i64 = (int64_t)va_arg( args, int64_t );
 566             return Seek( p_input, i64 );
 567
 568         case DEMUX_GET_LENGTH:
 569             pi64 = (int64_t*)va_arg( args, int64_t * );
 570             *pi64 = (mtime_t)1000000 *
 571                     (mtime_t)p_sys->i_duration /
 572                     (mtime_t)p_sys->i_timescale;
 573             return VLC_SUCCESS;
 574         case DEMUX_GET_FPS:
 575             msg_Warn( p_input, "DEMUX_GET_FPS unimplemented !!" );
 576             return VLC_EGENERIC;
 577         default:
 578             msg_Err( p_input, "control query unimplemented !!!" );
 579             return demux_vaControlDefault( p_input, i_query, args );
 580     }
 581 }
 582
 583 /*****************************************************************************
 584  * Close: frees unused data
 585  *****************************************************************************/
 586 static void Close ( vlc_object_t * p_this )
 587 {
 588     unsigned int i_track;
 589     input_thread_t *  p_input = (input_thread_t *)p_this;
 590     demux_sys_t *p_sys = p_input->p_demux_data;
 591
 592     msg_Dbg( p_input, "freeing all memory" );
 593
 594     MP4_BoxFree( p_input, p_sys->p_root );
 595     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 596     {
 597         MP4_TrackDestroy( p_input, &p_sys->track[i_track] );
 598     }
 599     FREE( p_sys->track );
 600
 601     free( p_sys );
 602 }
 603
 604
 605
 606 /****************************************************************************
 607  * Local functions, specific to vlc
 608  ****************************************************************************/
 609
 610 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 611 static int TrackCreateChunksIndex( input_thread_t *p_input,
 612                                    track_data_mp4_t *p_demux_track )
 613 {
 614     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 615     MP4_Box_t *p_stsc;
 616
 617     unsigned int i_chunk;
 618     unsigned int i_index, i_last;
 619
 620     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 621           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 622         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 623     {
 624         return( VLC_EGENERIC );
 625     }
 626
 627     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 628     if( !p_demux_track->i_chunk_count )
 629     {
 630         msg_Warn( p_input, "no chunk defined" );
 631         return( VLC_EGENERIC );
 632     }
 633     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 634                                    sizeof( chunk_data_mp4_t ) );
 635
 636     /* first we read chunk offset */
 637     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 638     {
 639         p_demux_track->chunk[i_chunk].i_offset =
 640                 p_co64->data.p_co64->i_chunk_offset[i_chunk];
 641     }
 642
 643     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 644         to be used for the sample XXX begin to 1
 645         We construct it begining at the end */
 646     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 647     i_index = p_stsc->data.p_stsc->i_entry_count;
 648     if( !i_index )
 649     {
 650         msg_Warn( p_input, "cannot read chunk table or table empty" );
 651         return( VLC_EGENERIC );
 652     }
 653
 654     while( i_index )
 655     {
 656         i_index--;
 657         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 658                 i_chunk < i_last; i_chunk++ )
 659         {
 660             p_demux_track->chunk[i_chunk].i_sample_description_index =
 661                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 662             p_demux_track->chunk[i_chunk].i_sample_count =
 663                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 664         }
 665         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 666     }
 667
 668     p_demux_track->chunk[0].i_sample_first = 0;
 669     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 670     {
 671         p_demux_track->chunk[i_chunk].i_sample_first =
 672             p_demux_track->chunk[i_chunk-1].i_sample_first +
 673                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 674     }
 675
 676     msg_Dbg( p_input,
 677              "track[Id 0x%x] read %d chunk",
 678              p_demux_track->i_track_ID,
 679             p_demux_track->i_chunk_count );
 680
 681     return( VLC_SUCCESS );
 682 }
 683 static int TrackCreateSamplesIndex( input_thread_t *p_input,
 684                                     track_data_mp4_t *p_demux_track )
 685 {
 686     MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
 687                           ctts make same mapping but for composition time,
 688                           not yet used and probably not usefull */
 689     MP4_Box_t *p_stsz; /* gives sample size of each samples, there is also stz2
 690                           that uses a compressed form FIXME make them in libmp4
 691                           as a unique type */
 692     /* TODO use also stss and stsh table for seeking */
 693     /* FIXME use edit table */
 694     int64_t i_sample;
 695     int64_t i_chunk;
 696
 697     int64_t i_index;
 698     int64_t i_index_sample_used;
 699
 700     int64_t i_last_dts;
 701
 702     p_stts = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
 703     p_stsz = MP4_BoxGet( p_demux_track->p_stbl, "stsz" ); /* FIXME and stz2 */
 704
 705     if( ( !p_stts )||( !p_stsz ) )
 706     {
 707         msg_Warn( p_input, "cannot read sample table" );
 708         return( VLC_EGENERIC );
 709     }
 710
 711     p_demux_track->i_sample_count = p_stsz->data.p_stsz->i_sample_count;
 712
 713
 714     /* for sample size, there are 2 case */
 715     if( p_stsz->data.p_stsz->i_sample_size )
 716     {
 717         /* 1: all sample have the same size, so no need to construct a table */
 718         p_demux_track->i_sample_size = p_stsz->data.p_stsz->i_sample_size;
 719         p_demux_track->p_sample_size = NULL;
 720     }
 721     else
 722     {
 723         /* 2: each sample can have a different size */
 724         p_demux_track->i_sample_size = 0;
 725         p_demux_track->p_sample_size =
 726             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
 727
 728         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
 729         {
 730             p_demux_track->p_sample_size[i_sample] =
 731                     p_stsz->data.p_stsz->i_entry_size[i_sample];
 732         }
 733     }
 734     /* we have extract all information from stsz,
 735         now use stts */
 736
 737     /* if we don't want to waste too much memory, we can't expand
 738        the box !, so each chunk will contain an "extract" of this table
 739        for fast research */
 740
 741     i_last_dts = 0;
 742     i_index = 0; i_index_sample_used =0;
 743
 744     /* create and init last data for each chunk */
 745     for(i_chunk = 0 ; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 746     {
 747
 748         int64_t i_entry, i_sample_count, i;
 749         /* save last dts */
 750         p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
 751     /* count how many entries needed for this chunk
 752        for p_sample_delta_dts and p_sample_count_dts */
 753
 754         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 755
 756         i_entry = 0;
 757         while( i_sample_count > 0 )
 758         {
 759             i_sample_count -= p_stts->data.p_stts->i_sample_count[i_index+i_entry];
 760             if( i_entry == 0 )
 761             {
 762                 i_sample_count += i_index_sample_used; /* don't count already used sample
 763                                                    int this entry */
 764             }
 765             i_entry++;
 766         }
 767
 768         /* allocate them */
 769         p_demux_track->chunk[i_chunk].p_sample_count_dts =
 770             calloc( i_entry, sizeof( uint32_t ) );
 771         p_demux_track->chunk[i_chunk].p_sample_delta_dts =
 772             calloc( i_entry, sizeof( uint32_t ) );
 773
 774         /* now copy */
 775         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 776         for( i = 0; i < i_entry; i++ )
 777         {
 778             int64_t i_used;
 779             int64_t i_rest;
 780
 781             i_rest = p_stts->data.p_stts->i_sample_count[i_index] - i_index_sample_used;
 782
 783             i_used = __MIN( i_rest, i_sample_count );
 784
 785             i_index_sample_used += i_used;
 786             i_sample_count -= i_used;
 787
 788             p_demux_track->chunk[i_chunk].p_sample_count_dts[i] = i_used;
 789
 790             p_demux_track->chunk[i_chunk].p_sample_delta_dts[i] =
 791                         p_stts->data.p_stts->i_sample_delta[i_index];
 792
 793             i_last_dts += i_used *
 794                     p_demux_track->chunk[i_chunk].p_sample_delta_dts[i];
 795
 796             if( i_index_sample_used >=
 797                              p_stts->data.p_stts->i_sample_count[i_index] )
 798             {
 799
 800                 i_index++;
 801                 i_index_sample_used = 0;
 802             }
 803         }
 804
 805     }
 806
 807     msg_Dbg( p_input,
 808              "track[Id 0x%x] read %d samples length:"I64Fd"s",
 809              p_demux_track->i_track_ID,
 810              p_demux_track->i_sample_count,
 811              i_last_dts / p_demux_track->i_timescale );
 812
 813     return( VLC_SUCCESS );
 814 }
 815
 816 /*
 817  * TrackCreateES:
 818  *  Create ES and PES to init decoder if needed, for a track starting at i_chunk
 819  */
 820 static int  TrackCreateES   ( input_thread_t   *p_input,
 821                               track_data_mp4_t *p_track,
 822                               unsigned int     i_chunk,
 823                               es_out_id_t      **pp_es )
 824 {
 825     MP4_Box_t   *p_sample;
 826     MP4_Box_t   *p_esds;
 827
 828     *pp_es = NULL;
 829
 830     if( !p_track->chunk[i_chunk].i_sample_description_index )
 831     {
 832         msg_Warn( p_input,
 833                   "invalid SampleEntry index (track[Id 0x%x])",
 834                   p_track->i_track_ID );
 835         return VLC_EGENERIC;
 836     }
 837
 838     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
 839                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
 840
 841     if( !p_sample || !p_sample->data.p_data )
 842     {
 843         msg_Warn( p_input,
 844                   "cannot find SampleEntry (track[Id 0x%x])",
 845                   p_track->i_track_ID );
 846         return( VLC_EGENERIC );
 847     }
 848
 849     p_track->p_sample = p_sample;
 850
 851     if( p_track->i_sample_size == 1 )
 852     {
 853         MP4_Box_data_sample_soun_t *p_soun;
 854
 855         p_soun = p_sample->data.p_sample_soun;
 856
 857         if( p_soun->i_qt_version == 0 )
 858         {
 859             switch( p_sample->i_type )
 860             {
 861                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
 862                     p_soun->i_qt_version = 1;
 863                     p_soun->i_sample_per_packet = 64;
 864                     p_soun->i_bytes_per_packet  = 34;
 865                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
 866                     p_soun->i_bytes_per_sample  = 2;
 867                     break;
 868                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
 869                     p_soun->i_qt_version = 1;
 870                     p_soun->i_sample_per_packet = 6;
 871                     p_soun->i_bytes_per_packet  = 2;
 872                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
 873                     p_soun->i_bytes_per_sample  = 2;
 874                     break;
 875                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
 876                     p_soun->i_qt_version = 1;
 877                     p_soun->i_sample_per_packet = 12;
 878                     p_soun->i_bytes_per_packet  = 2;
 879                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
 880                     p_soun->i_bytes_per_sample  = 2;
 881                     break;
 882                 default:
 883                     break;
 884             }
 885
 886         }
 887         else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
 888         {
 889             p_soun->i_qt_version = 0;
 890         }
 891     }
 892
 893
 894     /* It's a little ugly but .. there are special cases */
 895     switch( p_sample->i_type )
 896     {
 897         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
 898         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
 899             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
 900             break;
 901         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
 902             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
 903             break;
 904         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
 905             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
 906             break;
 907         default:
 908             p_track->fmt.i_codec = p_sample->i_type;
 909             break;
 910     }
 911
 912     /* now see if esds is present and if so create a data packet
 913         with decoder_specific_info  */
 914 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
 915     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
 916           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
 917         ( p_esds->data.p_esds )&&
 918         ( p_decconfig ) )
 919     {
 920         /* First update information based on i_objectTypeIndication */
 921         switch( p_decconfig->i_objectTypeIndication )
 922         {
 923             case( 0x20 ): /* MPEG4 VIDEO */
 924                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
 925                 break;
 926             case( 0x40):
 927                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
 928                 break;
 929             case( 0x60):
 930             case( 0x61):
 931             case( 0x62):
 932             case( 0x63):
 933             case( 0x64):
 934             case( 0x65): /* MPEG2 video */
 935                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
 936                 break;
 937             /* Theses are MPEG2-AAC */
 938             case( 0x66): /* main profile */
 939             case( 0x67): /* Low complexity profile */
 940             case( 0x68): /* Scaleable Sampling rate profile */
 941                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
 942                 break;
 943             /* true MPEG 2 audio */
 944             case( 0x69):
 945                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
 946                 break;
 947             case( 0x6a): /* MPEG1 video */
 948                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
 949                 break;
 950             case( 0x6b): /* MPEG1 audio */
 951                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
 952                 break;
 953             case( 0x6c ): /* jpeg */
 954                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
 955                 break;
 956             default:
 957                 /* Unknown entry, but don't touch i_fourcc */
 958                 msg_Warn( p_input,
 959                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
 960                           p_decconfig->i_objectTypeIndication,
 961                           p_track->i_track_ID );
 962                 break;
 963         }
 964         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
 965         if( p_track->fmt.i_extra > 0 )
 966         {
 967             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
 968             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
 969                     p_track->fmt.i_extra );
 970         }
 971     }
 972     else
 973     {
 974         switch( p_sample->i_type )
 975         {
 976             /* qt decoder, send the complete chunk */
 977             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
 978             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
 979             case VLC_FOURCC( 'V', 'P', '3', '1' ):
 980             case VLC_FOURCC( '3', 'I', 'V', '1' ):
 981             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
 982                 p_track->fmt.i_extra =
 983                     p_sample->data.p_sample_vide->i_qt_image_description;
 984                 if( p_track->fmt.i_extra > 0 )
 985                 {
 986                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
 987                     memcpy( p_track->fmt.p_extra,
 988                             p_sample->data.p_sample_vide->p_qt_image_description,
 989                             p_track->fmt.i_extra);
 990                 }
 991                 break;
 992             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
 993             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
 994             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
 995             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
 996                 p_track->fmt.i_extra =
 997                     p_sample->data.p_sample_soun->i_qt_description;
 998                 if( p_track->fmt.i_extra > 0 )
 999                 {
1000                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1001                     memcpy( p_track->fmt.p_extra,
1002                             p_sample->data.p_sample_soun->p_qt_description,
1003                             p_track->fmt.i_extra);
1004                 }
1005                 break;
1006             default:
1007                 break;
1008         }
1009     }
1010
1011 #undef p_decconfig
1012
1013     /* some last initialisation */
1014     switch( p_track->fmt.i_cat )
1015     {
1016     case( VIDEO_ES ):
1017         p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1018         p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1019
1020         /* fall on display size */
1021         if( p_track->fmt.video.i_width <= 0 )
1022             p_track->fmt.video.i_width = p_track->i_width;
1023         if( p_track->fmt.video.i_height <= 0 )
1024             p_track->fmt.video.i_height = p_track->i_height;
1025
1026         /* Find out apect ratio from display size */
1027         if( p_track->i_width > 0 && p_track->i_height > 0 )
1028             p_track->fmt.video.i_aspect =
1029                 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1030
1031         break;
1032
1033     case( AUDIO_ES ):
1034         p_track->fmt.audio.i_channels =
1035             p_sample->data.p_sample_soun->i_channelcount;
1036         p_track->fmt.audio.i_rate =
1037             p_sample->data.p_sample_soun->i_sampleratehi;
1038         p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1039             p_sample->data.p_sample_soun->i_sampleratehi *
1040                 p_sample->data.p_sample_soun->i_samplesize;
1041         p_track->fmt.audio.i_bitspersample =
1042             p_sample->data.p_sample_soun->i_samplesize;
1043         break;
1044
1045     default:
1046         break;
1047     }
1048
1049     *pp_es = es_out_Add( p_input->p_es_out, &p_track->fmt );
1050
1051     return VLC_SUCCESS;
1052 }
1053
1054 /* given a time it return sample/chunk */
1055 static int  TrackTimeToSampleChunk( input_thread_t *p_input,
1056                                     track_data_mp4_t *p_track,
1057                                     uint64_t i_start,
1058                                     uint32_t *pi_chunk,
1059                                     uint32_t *pi_sample )
1060 {
1061     MP4_Box_t    *p_stss;
1062     uint64_t     i_dts;
1063     unsigned int i_sample;
1064     unsigned int i_chunk;
1065     int          i_index;
1066
1067     /* convert absolute time to in timescale unit */
1068     i_start = i_start * (mtime_t)p_track->i_timescale / (mtime_t)1000000;
1069
1070     /* FIXME see if it's needed to check p_track->i_chunk_count */
1071     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1072     {
1073         return( VLC_EGENERIC );
1074     }
1075
1076     /* we start from sample 0/chunk 0, hope it won't take too much time */
1077     /* *** find good chunk *** */
1078     for( i_chunk = 0; ; i_chunk++ )
1079     {
1080         if( i_chunk + 1 >= p_track->i_chunk_count )
1081         {
1082             /* at the end and can't check if i_start in this chunk,
1083                it will be check while searching i_sample */
1084             i_chunk = p_track->i_chunk_count - 1;
1085             break;
1086         }
1087
1088         if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1089             i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1090         {
1091             break;
1092         }
1093     }
1094
1095     /* *** find sample in the chunk *** */
1096     i_sample = p_track->chunk[i_chunk].i_sample_first;
1097     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1098     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1099     {
1100         if( i_dts +
1101             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1102             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1103         {
1104             i_dts    +=
1105                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1106                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1107
1108             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1109             i_index++;
1110         }
1111         else
1112         {
1113             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1114             {
1115                 break;
1116             }
1117             i_sample += ( i_start - i_dts ) / p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1118             break;
1119         }
1120     }
1121
1122     if( i_sample >= p_track->i_sample_count )
1123     {
1124         msg_Warn( p_input,
1125                   "track[Id 0x%x] will be disabled (seeking too far) chunk=%d sample=%d",
1126                   p_track->i_track_ID, i_chunk, i_sample );
1127         return( VLC_EGENERIC );
1128     }
1129
1130
1131     /* *** Try to find nearest sync points *** */
1132     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1133     {
1134         unsigned int i_index;
1135         msg_Dbg( p_input,
1136                     "track[Id 0x%x] using Sync Sample Box (stss)",
1137                     p_track->i_track_ID );
1138         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1139         {
1140             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1141             {
1142                 if( i_index > 0 )
1143                 {
1144                     msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1145                             i_sample,
1146                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1147                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1148                     /* new i_sample is less than old so i_chunk can only decreased */
1149                     while( i_chunk > 0 &&
1150                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1151                     {
1152                         i_chunk--;
1153                     }
1154                 }
1155                 else
1156                 {
1157                     msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1158                             i_sample,
1159                             p_stss->data.p_stss->i_sample_number[i_index] );
1160                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1161                     /* new i_sample is more than old so i_chunk can only increased */
1162                     while( i_chunk < p_track->i_chunk_count - 1 &&
1163                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1164                                                 p_track->chunk[i_chunk].i_sample_count )
1165                     {
1166                         i_chunk++;
1167                     }
1168                 }
1169                 break;
1170             }
1171         }
1172     }
1173     else
1174     {
1175         msg_Dbg( p_input,
1176                     "track[Id 0x%x] does not provide Sync Sample Box (stss)",
1177                     p_track->i_track_ID );
1178     }
1179
1180     if( pi_chunk  ) *pi_chunk  = i_chunk;
1181     if( pi_sample ) *pi_sample = i_sample;
1182     return( VLC_SUCCESS );
1183 }
1184
1185 static int  TrackGotoChunkSample( input_thread_t   *p_input,
1186                                   track_data_mp4_t *p_track,
1187                                   unsigned int     i_chunk,
1188                                   unsigned int     i_sample )
1189 {
1190     vlc_bool_t b_reselect = VLC_FALSE;
1191
1192     /* now see if actual es is ok */
1193     if( p_track->i_chunk < 0 ||
1194         p_track->i_chunk >= p_track->i_chunk_count ||
1195         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1196             p_track->chunk[i_chunk].i_sample_description_index )
1197     {
1198         msg_Warn( p_input, "Recreate ES" );
1199
1200         es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, p_track->p_es, &b_reselect );
1201
1202         es_out_Del( p_input->p_es_out, p_track->p_es );
1203
1204         p_track->p_es = NULL;
1205
1206         if( TrackCreateES( p_input,
1207                            p_track, i_chunk,
1208                            &p_track->p_es ) )
1209         {
1210             msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1211                      p_track->i_track_ID );
1212
1213             p_track->b_ok       = VLC_FALSE;
1214             p_track->b_selected = VLC_FALSE;
1215             return VLC_EGENERIC;
1216         }
1217     }
1218
1219     /* select again the new decoder */
1220     if( b_reselect )
1221     {
1222         es_out_Control( p_input->p_es_out, ES_OUT_SET_ES, p_track->p_es );
1223     }
1224
1225     p_track->i_chunk    = i_chunk;
1226     p_track->i_sample   = i_sample;
1227
1228     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1229 }
1230
1231 /****************************************************************************
1232  * MP4_TrackCreate:
1233  ****************************************************************************
1234  * Parse track information and create all needed data to run a track
1235  * If it succeed b_ok is set to 1 else to 0
1236  ****************************************************************************/
1237 static void MP4_TrackCreate( input_thread_t *p_input,
1238                              track_data_mp4_t *p_track,
1239                              MP4_Box_t  * p_box_trak )
1240 {
1241     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1242     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1243     MP4_Box_t *p_elst;
1244
1245     MP4_Box_t *p_mdhd;
1246     MP4_Box_t *p_hdlr;
1247
1248     MP4_Box_t *p_vmhd;
1249     MP4_Box_t *p_smhd;
1250
1251     MP4_Box_t *p_drms;
1252
1253     unsigned int i;
1254     char language[4];
1255
1256     /* hint track unsuported */
1257
1258     /* set default value (-> track unusable) */
1259     p_track->b_ok       = VLC_FALSE;
1260     p_track->b_enable   = VLC_FALSE;
1261     p_track->b_selected = VLC_FALSE;
1262
1263     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1264
1265     if( !p_tkhd )
1266     {
1267         return;
1268     }
1269
1270     /* do we launch this track by default ? */
1271     p_track->b_enable =
1272         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1273
1274     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1275     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1276     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1277
1278     if( ( p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1279     {
1280 /*        msg_Warn( p_input, "unhandled box: edts --> FIXME" ); */
1281     }
1282
1283     if( p_tref )
1284     {
1285 /*        msg_Warn( p_input, "unhandled box: tref --> FIXME" ); */
1286     }
1287
1288     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1289     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1290
1291     if( ( !p_mdhd )||( !p_hdlr ) )
1292     {
1293         return;
1294     }
1295
1296     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1297
1298     for( i = 0; i < 3; i++ )
1299     {
1300         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1301     }
1302     language[3] = '\0';
1303
1304     switch( p_hdlr->data.p_hdlr->i_handler_type )
1305     {
1306         case( FOURCC_soun ):
1307             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1308             {
1309                 return;
1310             }
1311             p_track->fmt.i_cat = AUDIO_ES;
1312             break;
1313
1314         case( FOURCC_vide ):
1315             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1316             {
1317                 return;
1318             }
1319             p_track->fmt.i_cat = VIDEO_ES;
1320             break;
1321
1322         default:
1323             return;
1324     }
1325 /*  TODO
1326     add support for:
1327     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1328 */
1329     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1330         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1331     {
1332         return;
1333     }
1334
1335     p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1336     p_track->p_drms = p_drms != NULL ?
1337         p_drms->data.p_sample_soun->p_drms : NULL;
1338
1339     /* Set language */
1340     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1341     {
1342         p_track->fmt.psz_language = strdup( language );
1343     }
1344
1345     /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1346     if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1347     {
1348         MP4_Box_t *p_sample;
1349
1350         p_sample = MP4_BoxGet(  p_track->p_stsd, "[0]" );
1351         if( p_sample && p_sample->data.p_sample_soun)
1352         {
1353             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1354             if( p_soun->i_qt_version == 0 &&
1355                 p_track->i_timescale != p_soun->i_sampleratehi )
1356             {
1357                 msg_Warn( p_input,
1358                           "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1359                           "qt_version == 0\n"
1360                           "Making both equal. (report any problem)",
1361                           p_track->i_timescale, p_soun->i_sampleratehi );
1362
1363                 if( p_soun->i_sampleratehi )
1364                     p_track->i_timescale = p_soun->i_sampleratehi;
1365                 else
1366                     p_soun->i_sampleratehi = p_track->i_timescale;
1367             }
1368         }
1369     }
1370
1371     /* Create chunk index table and sample index table */
1372     if( TrackCreateChunksIndex( p_input,p_track  ) ||
1373         TrackCreateSamplesIndex( p_input, p_track ) )
1374     {
1375         return; /* cannot create chunks index */
1376     }
1377
1378     p_track->i_chunk  = 0;
1379     p_track->i_sample = 0;
1380
1381     /* now create es */
1382     if( TrackCreateES( p_input,
1383                        p_track, p_track->i_chunk,
1384                        &p_track->p_es ) )
1385     {
1386         msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1387                  p_track->i_track_ID );
1388         return;
1389     }
1390
1391 #if 0
1392     {
1393         int i;
1394         for( i = 0; i < p_track->i_chunk_count; i++ )
1395         {
1396             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n", i, p_track->chunk[i].i_sample_count, p_track->chunk[i].i_first_dts );
1397
1398         }
1399     }
1400 #endif
1401     p_track->b_ok = VLC_TRUE;
1402 }
1403
1404 /****************************************************************************
1405  * MP4_TrackDestroy:
1406  ****************************************************************************
1407  * Destroy a track created by MP4_TrackCreate.
1408  ****************************************************************************/
1409 static void MP4_TrackDestroy( input_thread_t *p_input,
1410                               track_data_mp4_t *p_track )
1411 {
1412     unsigned int i_chunk;
1413
1414     p_track->b_ok = VLC_FALSE;
1415     p_track->b_enable   = VLC_FALSE;
1416     p_track->b_selected = VLC_FALSE;
1417
1418     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1419
1420     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1421     {
1422         if( p_track->chunk )
1423         {
1424            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1425            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1426         }
1427     }
1428     FREE( p_track->chunk );
1429
1430     if( !p_track->i_sample_size )
1431     {
1432         FREE( p_track->p_sample_size );
1433     }
1434 }
1435
1436 static int  MP4_TrackSelect ( input_thread_t    *p_input,
1437                               track_data_mp4_t  *p_track,
1438                               mtime_t           i_start )
1439 {
1440     uint32_t i_chunk;
1441     uint32_t i_sample;
1442
1443     if( !p_track->b_ok )
1444     {
1445         return( VLC_EGENERIC );
1446     }
1447
1448     if( p_track->b_selected )
1449     {
1450         msg_Warn( p_input,
1451                   "track[Id 0x%x] already selected",
1452                   p_track->i_track_ID );
1453         return( VLC_SUCCESS );
1454     }
1455
1456     if( TrackTimeToSampleChunk( p_input,
1457                                 p_track, i_start,
1458                                 &i_chunk, &i_sample ) )
1459     {
1460         msg_Warn( p_input,
1461                   "cannot select track[Id 0x%x]",
1462                   p_track->i_track_ID );
1463         return( VLC_EGENERIC );
1464     }
1465
1466     p_track->b_selected = VLC_TRUE;
1467
1468     if( TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample ) )
1469     {
1470         p_track->b_selected = VLC_FALSE;
1471     }
1472     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1473 }
1474
1475 static void MP4_TrackUnselect(input_thread_t    *p_input,
1476                               track_data_mp4_t  *p_track )
1477 {
1478     if( !p_track->b_ok )
1479     {
1480         return;
1481     }
1482
1483     if( !p_track->b_selected )
1484     {
1485         msg_Warn( p_input,
1486                   "track[Id 0x%x] already unselected",
1487                   p_track->i_track_ID );
1488         return;
1489     }
1490     if( p_track->p_es )
1491     {
1492         es_out_Control( p_input->p_es_out, ES_OUT_SET_ES_STATE, p_track->p_es, VLC_FALSE );
1493     }
1494
1495     p_track->b_selected = VLC_FALSE;
1496 }
1497
1498 static int  MP4_TrackSeek   ( input_thread_t    *p_input,
1499                               track_data_mp4_t  *p_track,
1500                               mtime_t           i_start )
1501 {
1502     uint32_t i_chunk;
1503     uint32_t i_sample;
1504
1505     if( !p_track->b_ok )
1506     {
1507         return( VLC_EGENERIC );
1508     }
1509
1510     if( TrackTimeToSampleChunk( p_input,
1511                                 p_track, i_start,
1512                                 &i_chunk, &i_sample ) )
1513     {
1514         msg_Warn( p_input,
1515                   "cannot select track[Id 0x%x]",
1516                   p_track->i_track_ID );
1517         return( VLC_EGENERIC );
1518     }
1519
1520     p_track->b_selected = VLC_TRUE;
1521
1522     TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample );
1523
1524     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1525 }
1526
1527
1528
1529
1530
1531 /*
1532  * 3 types: for audio
1533  *
1534  */
1535 #define QT_V0_MAX_SAMPLES    1500
1536 static int  MP4_TrackSampleSize( track_data_mp4_t   *p_track )
1537 {
1538     int i_size;
1539     MP4_Box_data_sample_soun_t *p_soun;
1540
1541     if( p_track->i_sample_size == 0 )
1542     {
1543         /* most simple case */
1544         return( p_track->p_sample_size[p_track->i_sample] );
1545     }
1546     if( p_track->fmt.i_cat != AUDIO_ES )
1547     {
1548         return( p_track->i_sample_size );
1549     }
1550
1551     if( p_track->i_sample_size != 1 )
1552     {
1553         //msg_Warn( p_input, "SampleSize != 1" );
1554         return( p_track->i_sample_size );
1555     }
1556
1557     p_soun = p_track->p_sample->data.p_sample_soun;
1558
1559     if( p_soun->i_qt_version == 1 )
1560     {
1561         i_size = p_track->chunk[p_track->i_chunk].i_sample_count / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
1562     }
1563     else
1564     {
1565         /* FIXME */
1566         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
1567                 ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first );
1568         if( i_samples > QT_V0_MAX_SAMPLES )
1569         {
1570             i_samples = QT_V0_MAX_SAMPLES;
1571         }
1572         i_size = i_samples * p_soun->i_channelcount * p_soun->i_samplesize / 8;
1573     }
1574
1575     //fprintf( stderr, "size=%d\n", i_size );
1576     return( i_size );
1577 }
1578
1579
1580 static uint64_t MP4_GetTrackPos( track_data_mp4_t *p_track )
1581 {
1582     unsigned int i_sample;
1583     uint64_t i_pos;
1584
1585
1586     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
1587
1588     if( p_track->i_sample_size )
1589     {
1590         MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
1591
1592         if( p_soun->i_qt_version == 0 )
1593         {
1594             i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) *
1595                         p_soun->i_channelcount * p_soun->i_samplesize / 8;
1596         }
1597         else
1598         {
1599             /* we read chunk by chunk */
1600             i_pos += 0;
1601         }
1602     }
1603     else
1604     {
1605         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
1606                 i_sample < p_track->i_sample; i_sample++ )
1607         {
1608             i_pos += p_track->p_sample_size[i_sample];
1609         }
1610
1611     }
1612     return( i_pos );
1613 }
1614
1615 static int  MP4_TrackNextSample( input_thread_t     *p_input,
1616                                  track_data_mp4_t   *p_track )
1617 {
1618
1619     if( p_track->fmt.i_cat == AUDIO_ES &&
1620         p_track->i_sample_size != 0 )
1621     {
1622         MP4_Box_data_sample_soun_t *p_soun;
1623
1624         p_soun = p_track->p_sample->data.p_sample_soun;
1625
1626         if( p_soun->i_qt_version == 1 )
1627         {
1628             /* chunk by chunk */
1629             p_track->i_sample =
1630                 p_track->chunk[p_track->i_chunk].i_sample_first +
1631                 p_track->chunk[p_track->i_chunk].i_sample_count;
1632         }
1633         else
1634         {
1635             /* FIXME */
1636             p_track->i_sample += QT_V0_MAX_SAMPLES;
1637             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 )
1638             {
1639                 p_track->i_sample =
1640                     p_track->chunk[p_track->i_chunk].i_sample_first +
1641                     p_track->chunk[p_track->i_chunk].i_sample_count;
1642             }
1643         }
1644     }
1645     else
1646     {
1647         p_track->i_sample++;
1648     }
1649
1650     if( p_track->i_sample >= p_track->i_sample_count )
1651     {
1652         /* we have reach end of the track so free decoder stuff */
1653         msg_Warn( p_input, "track[0x%x] will be disabled", p_track->i_track_ID );
1654         MP4_TrackUnselect( p_input, p_track );
1655         return( VLC_EGENERIC );
1656     }
1657
1658     /* Have we changed chunk ? */
1659     if( p_track->i_sample >=
1660             p_track->chunk[p_track->i_chunk].i_sample_first +
1661             p_track->chunk[p_track->i_chunk].i_sample_count )
1662     {
1663         if( TrackGotoChunkSample( p_input,
1664                                   p_track,
1665                                   p_track->i_chunk + 1,
1666                                   p_track->i_sample ) )
1667         {
1668             msg_Warn( p_input, "track[0x%x] will be disabled (cannot restart decoder)", p_track->i_track_ID );
1669             MP4_TrackUnselect( p_input, p_track );
1670             return( VLC_EGENERIC );
1671         }
1672     }
1673
1674     return( VLC_SUCCESS );
1675 }
1676
1677