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 1.43 2003/11/27 12:32:51 fenrir Exp $
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #include <stdlib.h>                                      /* malloc(), free() */
  27
  28 #include <vlc/vlc.h>
  29 #include <vlc/input.h>
  30 #include <vlc_playlist.h>
  31
  32 #include "libmp4.h"
  33 #include "mp4.h"
  34
  35 /*****************************************************************************
  36  * Module descriptor
  37  *****************************************************************************/
  38 static int  Open ( vlc_object_t * );
  39 static void Close( vlc_object_t * );
  40
  41 vlc_module_begin();
  42     set_description( _("MP4 demuxer") );
  43     set_capability( "demux", 242 );
  44     set_callbacks( Open, Close );
  45 vlc_module_end();
  46
  47 /*****************************************************************************
  48  * Local prototypes
  49  *****************************************************************************/
  50 static int    Demux   ( input_thread_t * );
  51 static int    DemuxRef( input_thread_t *p_input )
  52 {
  53     return 0;
  54 }
  55 static int   Seek     ( input_thread_t *, mtime_t );
  56 static int   Control  ( input_thread_t *, int, va_list );
  57
  58 /*****************************************************************************
  59  * Declaration of local function
  60  *****************************************************************************/
  61 static void MP4_TrackCreate ( input_thread_t *, track_data_mp4_t *, MP4_Box_t  *);
  62 static void MP4_TrackDestroy( input_thread_t *, track_data_mp4_t * );
  63
  64 static int  MP4_TrackSelect ( input_thread_t *, track_data_mp4_t *, mtime_t );
  65 static void MP4_TrackUnselect(input_thread_t *, track_data_mp4_t * );
  66
  67 static int  MP4_TrackSeek   ( input_thread_t *, track_data_mp4_t *, mtime_t );
  68
  69 static uint64_t MP4_GetTrackPos    ( track_data_mp4_t * );
  70 static int      MP4_TrackSampleSize( track_data_mp4_t * );
  71 static int      MP4_TrackNextSample( input_thread_t *, track_data_mp4_t * );
  72
  73 #define FREE( p ) \
  74     if( p ) { free( p ); (p) = NULL;}
  75
  76 /*****************************************************************************
  77  * Open: check file and initializes MP4 structures
  78  *****************************************************************************/
  79 static int Open( vlc_object_t * p_this )
  80 {
  81     input_thread_t  *p_input = (input_thread_t *)p_this;
  82     demux_sys_t     *p_sys;
  83
  84     uint8_t         *p_peek;
  85
  86     MP4_Box_t       *p_ftyp;
  87     MP4_Box_t       *p_rmra;
  88     MP4_Box_t       *p_mvhd;
  89     MP4_Box_t       *p_trak;
  90
  91     unsigned int    i;
  92     vlc_bool_t      b_seekable;
  93
  94     /* a little test to see if it could be a mp4 */
  95     if( stream_Peek( p_input->s, &p_peek, 8 ) < 8 )
  96     {
  97         msg_Warn( p_input, "MP4 plugin discarded (cannot peek)" );
  98         return VLC_EGENERIC;
  99     }
 100     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 101     {
 102         case FOURCC_ftyp:
 103         case FOURCC_moov:
 104         case FOURCC_foov:
 105         case FOURCC_moof:
 106         case FOURCC_mdat:
 107         case FOURCC_udta:
 108         case FOURCC_free:
 109         case FOURCC_skip:
 110         case FOURCC_wide:
 111             break;
 112          default:
 113             msg_Warn( p_input, "MP4 plugin discarded (not a valid file)" );
 114             return VLC_EGENERIC;
 115     }
 116
 117     /* I need to seek */
 118     stream_Control( p_input->s, STREAM_CAN_SEEK, &b_seekable );
 119     if( !b_seekable )
 120     {
 121         msg_Warn( p_input, "MP4 plugin discarded (unseekable)" );
 122         return VLC_EGENERIC;
 123     }
 124
 125     /*Set exported functions */
 126     p_input->pf_demux = Demux;
 127     p_input->pf_demux_control = Control;
 128
 129     /* create our structure that will contains all data */
 130     p_input->p_demux_data = p_sys = malloc( sizeof( demux_sys_t ) );
 131     memset( p_sys, 0, sizeof( demux_sys_t ) );
 132
 133     /* Now load all boxes ( except raw data ) */
 134     if( ( p_sys->p_root = MP4_BoxGetRoot( p_input ) ) == NULL )
 135     {
 136         msg_Warn( p_input, "MP4 plugin discarded (not a valid file)" );
 137         goto error;
 138     }
 139
 140     MP4_BoxDumpStructure( p_input, p_sys->p_root );
 141
 142     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 143     {
 144         switch( p_ftyp->data.p_ftyp->i_major_brand )
 145         {
 146             case( FOURCC_isom ):
 147                 msg_Dbg( p_input,
 148                          "ISO Media file (isom) version %d.",
 149                          p_ftyp->data.p_ftyp->i_minor_version );
 150                 break;
 151             default:
 152                 msg_Dbg( p_input,
 153                          "unrecognized major file specification (%4.4s).",
 154                           (char*)&p_ftyp->data.p_ftyp->i_major_brand );
 155                 break;
 156         }
 157     }
 158     else
 159     {
 160         msg_Dbg( p_input, "file type box missing (assuming ISO Media file)" );
 161     }
 162
 163     /* the file need to have one moov box */
 164     if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
 165     {
 166         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 167
 168         if( !p_foov )
 169         {
 170             msg_Err( p_input, "MP4 plugin discarded (no moov box)" );
 171             goto error;
 172         }
 173         /* we have a free box as a moov, rename it */
 174         p_foov->i_type = FOURCC_moov;
 175     }
 176
 177     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 178     {
 179         playlist_t *p_playlist;
 180         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 181         int        i;
 182
 183         msg_Dbg( p_input, "detected playlist mov file (%d ref)", i_count );
 184
 185         p_playlist =
 186             (playlist_t *)vlc_object_find( p_input,
 187                                            VLC_OBJECT_PLAYLIST,
 188                                            FIND_ANYWHERE );
 189         if( p_playlist )
 190         {
 191             //p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
 192             for( i = 0; i < i_count; i++ )
 193             {
 194                 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 195                 char      *psz_ref;
 196                 uint32_t  i_ref_type;
 197
 198                 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
 199                 {
 200                     continue;
 201                 }
 202                 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
 203
 204                 msg_Dbg( p_input, "new ref=`%s' type=%4.4s",
 205                          psz_ref, (char*)&i_ref_type );
 206
 207                 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 208                 {
 209                     if( strstr( psz_ref, "qt5gateQT" ) )
 210                     {
 211                         msg_Dbg( p_input, "ignoring pseudo ref =`%s'", psz_ref );
 212                         continue;
 213                     }
 214                     if( !strncmp( psz_ref, "http://", 7 ) ||
 215                         !strncmp( psz_ref, "rtsp://", 7 ) )
 216                     {
 217                         msg_Dbg( p_input, "adding ref = `%s'", psz_ref );
 218                         playlist_Add( p_playlist, psz_ref, 0, 0,
 219                                       PLAYLIST_APPEND, PLAYLIST_END );
 220                     }
 221                     else
 222                     {
 223                         /* msg dbg relative ? */
 224                         char *psz_absolute = alloca( strlen( p_input->psz_source ) + strlen( psz_ref ) + 1);
 225                         char *end = strrchr( p_input->psz_source, '/' );
 226
 227                         if( end )
 228                         {
 229                             int i_len = end + 1 - p_input->psz_source;
 230
 231                             strncpy( psz_absolute, p_input->psz_source, i_len);
 232                             psz_absolute[i_len] = '\0';
 233                         }
 234                         else
 235                         {
 236                             strcpy( psz_absolute, "" );
 237                         }
 238                         strcat( psz_absolute, psz_ref );
 239                         msg_Dbg( p_input, "adding ref = `%s'", psz_absolute );
 240                         playlist_Add( p_playlist, psz_absolute, 0, 0,
 241                                       PLAYLIST_APPEND, PLAYLIST_END );
 242                     }
 243                 }
 244                 else
 245                 {
 246                     msg_Err( p_input, "unknown ref type=%4.4s FIXME (send a bug report)", (char*)&p_rdrf->data.p_rdrf->i_ref_type );
 247                 }
 248             }
 249             vlc_object_release( p_playlist );
 250         }
 251         else
 252         {
 253             msg_Err( p_input, "can't find playlist" );
 254         }
 255     }
 256
 257     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 258     {
 259         if( !p_rmra )
 260         {
 261             msg_Err( p_input, "cannot find /moov/mvhd" );
 262             goto error;
 263         }
 264         else
 265         {
 266             msg_Warn( p_input, "cannot find /moov/mvhd (pure ref file)" );
 267             p_input->pf_demux = DemuxRef;
 268             return VLC_SUCCESS;
 269         }
 270     }
 271     else
 272     {
 273         p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
 274         p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
 275     }
 276
 277     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 278     {
 279         msg_Err( p_input, "cannot find any /moov/trak" );
 280         goto error;
 281     }
 282     msg_Dbg( p_input, "find %d track%c",
 283                         p_sys->i_tracks,
 284                         p_sys->i_tracks ? 's':' ' );
 285
 286     /*  create one program */
 287     vlc_mutex_lock( &p_input->stream.stream_lock );
 288     if( input_InitStream( p_input, 0 ) == -1)
 289     {
 290         vlc_mutex_unlock( &p_input->stream.stream_lock );
 291         msg_Err( p_input, "cannot init stream" );
 292         goto error;
 293     }
 294     if( p_sys->i_duration/p_sys->i_timescale > 0 )
 295     {
 296         p_input->stream.i_mux_rate =
 297             p_input->stream.p_selected_area->i_size / 50 /
 298             ( p_sys->i_duration / p_sys->i_timescale );
 299     }
 300     else
 301     {
 302         p_input->stream.i_mux_rate = 0;
 303     }
 304     vlc_mutex_unlock( &p_input->stream.stream_lock );
 305
 306
 307     /* allocate memory */
 308     p_sys->track = calloc( p_sys->i_tracks, sizeof( track_data_mp4_t ) );
 309     memset( p_sys->track, 0, p_sys->i_tracks * sizeof( track_data_mp4_t ) );
 310
 311     /* now process each track and extract all usefull informations */
 312     for( i = 0; i < p_sys->i_tracks; i++ )
 313     {
 314         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 315         MP4_TrackCreate( p_input, &p_sys->track[i], p_trak );
 316
 317         if( p_sys->track[i].b_ok )
 318         {
 319             char *psz_cat;
 320             switch( p_sys->track[i].fmt.i_cat )
 321             {
 322                 case( VIDEO_ES ):
 323                     psz_cat = "video";
 324                     break;
 325                 case( AUDIO_ES ):
 326                     psz_cat = "audio";
 327                     break;
 328                 default:
 329                     psz_cat = "unknown";
 330                     break;
 331             }
 332
 333             msg_Dbg( p_input, "adding track[Id 0x%x] %s (%s) language %s",
 334                             p_sys->track[i].i_track_ID,
 335                             psz_cat,
 336                             p_sys->track[i].b_enable ? "enable":"disable",
 337                             p_sys->track[i].fmt.psz_language ? p_sys->track[i].fmt.psz_language : "undef" );
 338         }
 339         else
 340         {
 341             msg_Dbg( p_input, "ignoring track[Id 0x%x]", p_sys->track[i].i_track_ID );
 342         }
 343
 344     }
 345     return VLC_SUCCESS;
 346
 347 error:
 348     if( p_sys->p_root )
 349     {
 350         MP4_BoxFree( p_input, p_sys->p_root );
 351     }
 352     free( p_sys );
 353     return VLC_EGENERIC;
 354 }
 355
 356 /*****************************************************************************
 357  * Demux: read packet and send them to decoders
 358  *****************************************************************************
 359  * TODO check for newly selected track (ie audio upt to now )
 360  *****************************************************************************/
 361 static int Demux( input_thread_t *p_input )
 362 {
 363     demux_sys_t *p_sys = p_input->p_demux_data;
 364     unsigned int i_track;
 365
 366
 367     unsigned int i_track_selected;
 368     vlc_bool_t   b_play_audio;
 369
 370     /* check for newly selected/unselected track */
 371     for( i_track = 0, i_track_selected = 0; i_track <  p_sys->i_tracks; i_track++ )
 372     {
 373 #define track   p_sys->track[i_track]
 374         if( track.b_selected && track.i_sample >= track.i_sample_count )
 375         {
 376             msg_Warn( p_input, "track[0x%x] will be disabled", track.i_track_ID );
 377             MP4_TrackUnselect( p_input, &track );
 378         }
 379         else if( track.b_ok )
 380         {
 381             vlc_bool_t b;
 382             es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, track.p_es, &b );
 383
 384             if( track.b_selected && !b )
 385             {
 386                 MP4_TrackUnselect( p_input, &track );
 387             }
 388             else if( !track.b_selected && b)
 389             {
 390                 MP4_TrackSelect( p_input, &track, MP4_GetMoviePTS( p_sys ) );
 391             }
 392
 393             if( track.b_selected )
 394             {
 395                 i_track_selected++;
 396             }
 397         }
 398 #undef  track
 399     }
 400
 401     if( i_track_selected <= 0 )
 402     {
 403         msg_Warn( p_input, "no track selected, exiting..." );
 404         return( 0 );
 405     }
 406
 407     /* first wait for the good time to read a packet */
 408     input_ClockManageRef( p_input,
 409                           p_input->stream.p_selected_program,
 410                           p_sys->i_pcr );
 411
 412     /* update pcr XXX in mpeg scale so in 90000 unit/s */
 413     p_sys->i_pcr = MP4_GetMoviePTS( p_sys ) * 9 / 100;
 414
 415     /* we will read 100ms for each stream so ...*/
 416     p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
 417
 418     /* Check if we need to send the audio data to decoder */
 419     b_play_audio = !p_input->stream.control.b_mute;
 420
 421     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 422     {
 423 #define track p_sys->track[i_track]
 424         if( !track.b_ok ||
 425             !track.b_selected ||
 426             MP4_GetTrackPTS( &track ) >= MP4_GetMoviePTS( p_sys ) )
 427         {
 428             continue;
 429         }
 430
 431         while( MP4_GetTrackPTS( &track ) < MP4_GetMoviePTS( p_sys ) )
 432         {
 433
 434             if( !b_play_audio && track.fmt.i_cat == AUDIO_ES )
 435             {
 436                 if( MP4_TrackNextSample( p_input, &track ) )
 437                 {
 438                     break;
 439                 }
 440             }
 441             else
 442             {
 443                 block_t *p_block;
 444
 445                 /* go,go go ! */
 446                 if( stream_Seek( p_input->s, MP4_GetTrackPos( &track ) ) )
 447                 {
 448                     msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", track.i_track_ID );
 449                     MP4_TrackUnselect( p_input, &track );
 450                     break;
 451                 }
 452
 453                 /* now read pes */
 454                 if( ( p_block = stream_Block( p_input->s,
 455                                               MP4_TrackSampleSize( &track ) ) ) == NULL )
 456                 {
 457                     msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", track.i_track_ID );
 458                     MP4_TrackUnselect( p_input, &track );
 459                     break;
 460                 }
 461
 462                 if( track.fmt.i_cat == VIDEO_ES )
 463                 {
 464                     /* FIXME sometime we can calculate PTS */
 465                     p_block->i_pts = 0;
 466                     p_block->i_dts =
 467                         input_ClockGetTS( p_input,
 468                                           p_input->stream.p_selected_program,
 469                                           MP4_GetTrackPTS( &track ) * 9/100 );
 470                 }
 471                 else
 472                 {
 473                     p_block->i_pts =
 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
 480                 es_out_Send( p_input->p_es_out, track.p_es, p_block );
 481
 482                 if( MP4_TrackNextSample( p_input, &track ) )
 483                 {
 484                     break;
 485                 }
 486             }
 487         }
 488 #undef track
 489     }
 490
 491     return( 1 );
 492 }
 493 /*****************************************************************************
 494  * Seek: Got to i_date
 495  ******************************************************************************/
 496 static int   Seek     ( input_thread_t *p_input, mtime_t i_date )
 497 {
 498     demux_sys_t *p_sys = p_input->p_demux_data;
 499     unsigned int i_track;
 500     /* First update update global time */
 501     p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
 502     p_sys->i_pcr  = i_date* 9 / 100;
 503
 504     /* Now for each stream try to go to this time */
 505     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 506     {
 507 #define track p_sys->track[i_track]
 508         if( track.b_ok && track.b_selected )
 509         {
 510             MP4_TrackSeek( p_input, &track, i_date );
 511         }
 512 #undef  track
 513     }
 514     return( 1 );
 515 }
 516
 517 /*****************************************************************************
 518  * Control:
 519  *****************************************************************************/
 520 static int   Control  ( input_thread_t *p_input, int i_query, va_list args )
 521 {
 522     demux_sys_t *p_sys = p_input->p_demux_data;
 523
 524     double   f, *pf;
 525     int64_t i64, *pi64;
 526
 527     switch( i_query )
 528     {
 529         case DEMUX_GET_POSITION:
 530             pf = (double*)va_arg( args, double * );
 531             if( p_sys->i_duration > 0 )
 532             {
 533                 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
 534             }
 535             else
 536             {
 537                 *pf = 0.0;
 538             }
 539             return VLC_SUCCESS;
 540
 541         case DEMUX_SET_POSITION:
 542             f = (double)va_arg( args, double );
 543             i64 = (int64_t)( f *
 544                              (double)1000000 *
 545                              (double)p_sys->i_duration /
 546                              (double)p_sys->i_timescale );
 547             return Seek( p_input, i64 );
 548
 549         case DEMUX_GET_TIME:
 550             pi64 = (int64_t*)va_arg( args, int64_t * );
 551             *pi64 = (mtime_t)1000000 *
 552                     (mtime_t)p_sys->i_time /
 553                     (mtime_t)p_sys->i_timescale;
 554             return VLC_SUCCESS;
 555
 556         case DEMUX_SET_TIME:
 557             i64 = (int64_t)va_arg( args, int64_t );
 558             return Seek( p_input, i64 );
 559
 560         case DEMUX_GET_LENGTH:
 561             pi64 = (int64_t*)va_arg( args, int64_t * );
 562             *pi64 = (mtime_t)1000000 *
 563                     (mtime_t)p_sys->i_duration /
 564                     (mtime_t)p_sys->i_timescale;
 565             return VLC_SUCCESS;
 566         case DEMUX_GET_FPS:
 567             msg_Warn( p_input, "DEMUX_GET_FPS unimplemented !!" );
 568             return VLC_EGENERIC;
 569         default:
 570             msg_Err( p_input, "control query unimplemented !!!" );
 571             return demux_vaControlDefault( p_input, i_query, args );
 572     }
 573 }
 574
 575 /*****************************************************************************
 576  * Close: frees unused data
 577  *****************************************************************************/
 578 static void Close ( vlc_object_t * p_this )
 579 {
 580     unsigned int i_track;
 581     input_thread_t *  p_input = (input_thread_t *)p_this;
 582     demux_sys_t *p_sys = p_input->p_demux_data;
 583
 584     msg_Dbg( p_input, "freeing all memory" );
 585
 586     MP4_BoxFree( p_input, p_sys->p_root );
 587     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
 588     {
 589         MP4_TrackDestroy( p_input, &p_sys->track[i_track] );
 590     }
 591     FREE( p_sys->track );
 592
 593     free( p_sys );
 594 }
 595
 596
 597
 598 /****************************************************************************
 599  * Local functions, specific to vlc
 600  ****************************************************************************/
 601
 602 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
 603 static int TrackCreateChunksIndex( input_thread_t *p_input,
 604                                    track_data_mp4_t *p_demux_track )
 605 {
 606     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
 607     MP4_Box_t *p_stsc;
 608
 609     unsigned int i_chunk;
 610     unsigned int i_index, i_last;
 611
 612     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
 613           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
 614         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
 615     {
 616         return( VLC_EGENERIC );
 617     }
 618
 619     p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
 620     if( !p_demux_track->i_chunk_count )
 621     {
 622         msg_Warn( p_input, "no chunk defined" );
 623         return( VLC_EGENERIC );
 624     }
 625     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
 626                                    sizeof( chunk_data_mp4_t ) );
 627
 628     /* first we read chunk offset */
 629     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 630     {
 631         p_demux_track->chunk[i_chunk].i_offset =
 632                 p_co64->data.p_co64->i_chunk_offset[i_chunk];
 633     }
 634
 635     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
 636         to be used for the sample XXX begin to 1
 637         We construct it begining at the end */
 638     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
 639     i_index = p_stsc->data.p_stsc->i_entry_count;
 640     if( !i_index )
 641     {
 642         msg_Warn( p_input, "cannot read chunk table or table empty" );
 643         return( VLC_EGENERIC );
 644     }
 645
 646     while( i_index )
 647     {
 648         i_index--;
 649         for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 650                 i_chunk < i_last; i_chunk++ )
 651         {
 652             p_demux_track->chunk[i_chunk].i_sample_description_index =
 653                     p_stsc->data.p_stsc->i_sample_description_index[i_index];
 654             p_demux_track->chunk[i_chunk].i_sample_count =
 655                     p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
 656         }
 657         i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
 658     }
 659
 660     p_demux_track->chunk[0].i_sample_first = 0;
 661     for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 662     {
 663         p_demux_track->chunk[i_chunk].i_sample_first =
 664             p_demux_track->chunk[i_chunk-1].i_sample_first +
 665                 p_demux_track->chunk[i_chunk-1].i_sample_count;
 666     }
 667
 668     msg_Dbg( p_input,
 669              "track[Id 0x%x] read %d chunk",
 670              p_demux_track->i_track_ID,
 671             p_demux_track->i_chunk_count );
 672
 673     return( VLC_SUCCESS );
 674 }
 675 static int TrackCreateSamplesIndex( input_thread_t *p_input,
 676                                     track_data_mp4_t *p_demux_track )
 677 {
 678     MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
 679                           ctts make same mapping but for composition time,
 680                           not yet used and probably not usefull */
 681     MP4_Box_t *p_stsz; /* gives sample size of each samples, there is also stz2
 682                           that uses a compressed form FIXME make them in libmp4
 683                           as a unique type */
 684     /* TODO use also stss and stsh table for seeking */
 685     /* FIXME use edit table */
 686     int64_t i_sample;
 687     int64_t i_chunk;
 688
 689     int64_t i_index;
 690     int64_t i_index_sample_used;
 691
 692     int64_t i_last_dts;
 693
 694     p_stts = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
 695     p_stsz = MP4_BoxGet( p_demux_track->p_stbl, "stsz" ); /* FIXME and stz2 */
 696
 697     if( ( !p_stts )||( !p_stsz ) )
 698     {
 699         msg_Warn( p_input, "cannot read sample table" );
 700         return( VLC_EGENERIC );
 701     }
 702
 703     p_demux_track->i_sample_count = p_stsz->data.p_stsz->i_sample_count;
 704
 705
 706     /* for sample size, there are 2 case */
 707     if( p_stsz->data.p_stsz->i_sample_size )
 708     {
 709         /* 1: all sample have the same size, so no need to construct a table */
 710         p_demux_track->i_sample_size = p_stsz->data.p_stsz->i_sample_size;
 711         p_demux_track->p_sample_size = NULL;
 712     }
 713     else
 714     {
 715         /* 2: each sample can have a different size */
 716         p_demux_track->i_sample_size = 0;
 717         p_demux_track->p_sample_size =
 718             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
 719
 720         for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
 721         {
 722             p_demux_track->p_sample_size[i_sample] =
 723                     p_stsz->data.p_stsz->i_entry_size[i_sample];
 724         }
 725     }
 726     /* we have extract all information from stsz,
 727         now use stts */
 728
 729     /* if we don't want to waste too much memory, we can't expand
 730        the box !, so each chunk will contain an "extract" of this table
 731        for fast research */
 732
 733     i_last_dts = 0;
 734     i_index = 0; i_index_sample_used =0;
 735
 736     /* create and init last data for each chunk */
 737     for(i_chunk = 0 ; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
 738     {
 739
 740         int64_t i_entry, i_sample_count, i;
 741         /* save last dts */
 742         p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
 743     /* count how many entries needed for this chunk
 744        for p_sample_delta_dts and p_sample_count_dts */
 745
 746         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 747
 748         i_entry = 0;
 749         while( i_sample_count > 0 )
 750         {
 751             i_sample_count -= p_stts->data.p_stts->i_sample_count[i_index+i_entry];
 752             if( i_entry == 0 )
 753             {
 754                 i_sample_count += i_index_sample_used; /* don't count already used sample
 755                                                    int this entry */
 756             }
 757             i_entry++;
 758         }
 759
 760         /* allocate them */
 761         p_demux_track->chunk[i_chunk].p_sample_count_dts =
 762             calloc( i_entry, sizeof( uint32_t ) );
 763         p_demux_track->chunk[i_chunk].p_sample_delta_dts =
 764             calloc( i_entry, sizeof( uint32_t ) );
 765
 766         /* now copy */
 767         i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
 768         for( i = 0; i < i_entry; i++ )
 769         {
 770             int64_t i_used;
 771             int64_t i_rest;
 772
 773             i_rest = p_stts->data.p_stts->i_sample_count[i_index] - i_index_sample_used;
 774
 775             i_used = __MIN( i_rest, i_sample_count );
 776
 777             i_index_sample_used += i_used;
 778             i_sample_count -= i_used;
 779
 780             p_demux_track->chunk[i_chunk].p_sample_count_dts[i] = i_used;
 781
 782             p_demux_track->chunk[i_chunk].p_sample_delta_dts[i] =
 783                         p_stts->data.p_stts->i_sample_delta[i_index];
 784
 785             i_last_dts += i_used *
 786                     p_demux_track->chunk[i_chunk].p_sample_delta_dts[i];
 787
 788             if( i_index_sample_used >=
 789                              p_stts->data.p_stts->i_sample_count[i_index] )
 790             {
 791
 792                 i_index++;
 793                 i_index_sample_used = 0;
 794             }
 795         }
 796
 797     }
 798
 799     msg_Dbg( p_input,
 800              "track[Id 0x%x] read %d samples length:"I64Fd"s",
 801              p_demux_track->i_track_ID,
 802              p_demux_track->i_sample_count,
 803              i_last_dts / p_demux_track->i_timescale );
 804
 805     return( VLC_SUCCESS );
 806 }
 807
 808 /*
 809  * TrackCreateES:
 810  *  Create ES and PES to init decoder if needed, for a track starting at i_chunk
 811  */
 812 static int  TrackCreateES   ( input_thread_t   *p_input,
 813                               track_data_mp4_t *p_track,
 814                               unsigned int     i_chunk,
 815                               es_out_id_t      **pp_es )
 816 {
 817     MP4_Box_t   *p_sample;
 818     MP4_Box_t   *p_esds;
 819
 820     *pp_es = NULL;
 821
 822     if( !p_track->chunk[i_chunk].i_sample_description_index )
 823     {
 824         msg_Warn( p_input,
 825                   "invalid SampleEntry index (track[Id 0x%x])",
 826                   p_track->i_track_ID );
 827         return VLC_EGENERIC;
 828     }
 829
 830     p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
 831                 p_track->chunk[i_chunk].i_sample_description_index - 1 );
 832
 833     if( !p_sample || !p_sample->data.p_data )
 834     {
 835         msg_Warn( p_input,
 836                   "cannot find SampleEntry (track[Id 0x%x])",
 837                   p_track->i_track_ID );
 838         return( VLC_EGENERIC );
 839     }
 840
 841     p_track->p_sample = p_sample;
 842
 843     if( p_track->i_sample_size == 1 )
 844     {
 845         MP4_Box_data_sample_soun_t *p_soun;
 846
 847         p_soun = p_sample->data.p_sample_soun;
 848
 849         if( p_soun->i_qt_version == 0 )
 850         {
 851             switch( p_sample->i_type )
 852             {
 853                 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
 854                     p_soun->i_qt_version = 1;
 855                     p_soun->i_sample_per_packet = 64;
 856                     p_soun->i_bytes_per_packet  = 34;
 857                     p_soun->i_bytes_per_frame   = 34 * p_soun->i_channelcount;
 858                     p_soun->i_bytes_per_sample  = 2;
 859                     break;
 860                 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
 861                     p_soun->i_qt_version = 1;
 862                     p_soun->i_sample_per_packet = 6;
 863                     p_soun->i_bytes_per_packet  = 2;
 864                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
 865                     p_soun->i_bytes_per_sample  = 2;
 866                     break;
 867                 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
 868                     p_soun->i_qt_version = 1;
 869                     p_soun->i_sample_per_packet = 12;
 870                     p_soun->i_bytes_per_packet  = 2;
 871                     p_soun->i_bytes_per_frame   = 2 * p_soun->i_channelcount;
 872                     p_soun->i_bytes_per_sample  = 2;
 873                     break;
 874                 default:
 875                     break;
 876             }
 877         }
 878     }
 879
 880     /* It's a little ugly but .. there are special cases */
 881     switch( p_sample->i_type )
 882     {
 883         case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
 884         case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
 885             p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
 886             break;
 887         case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
 888             p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
 889             break;
 890         case( VLC_FOURCC( 's', '2', '6', '3' ) ):
 891             p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
 892             break;
 893         default:
 894             p_track->fmt.i_codec = p_sample->i_type;
 895             break;
 896     }
 897
 898     /* now see if esds is present and if so create a data packet
 899         with decoder_specific_info  */
 900 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
 901     if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
 902           ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
 903         ( p_esds->data.p_esds )&&
 904         ( p_decconfig ) )
 905     {
 906         /* First update information based on i_objectTypeIndication */
 907         switch( p_decconfig->i_objectTypeIndication )
 908         {
 909             case( 0x20 ): /* MPEG4 VIDEO */
 910                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
 911                 break;
 912             case( 0x40):
 913                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
 914                 break;
 915             case( 0x60):
 916             case( 0x61):
 917             case( 0x62):
 918             case( 0x63):
 919             case( 0x64):
 920             case( 0x65): /* MPEG2 video */
 921                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
 922                 break;
 923             /* Theses are MPEG2-AAC */
 924             case( 0x66): /* main profile */
 925             case( 0x67): /* Low complexity profile */
 926             case( 0x68): /* Scaleable Sampling rate profile */
 927                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
 928                 break;
 929             /* true MPEG 2 audio */
 930             case( 0x69):
 931                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
 932                 break;
 933             case( 0x6a): /* MPEG1 video */
 934                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
 935                 break;
 936             case( 0x6b): /* MPEG1 audio */
 937                 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
 938                 break;
 939             case( 0x6c ): /* jpeg */
 940                 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
 941                 break;
 942             default:
 943                 /* Unknown entry, but don't touch i_fourcc */
 944                 msg_Warn( p_input,
 945                           "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
 946                           p_decconfig->i_objectTypeIndication,
 947                           p_track->i_track_ID );
 948                 break;
 949         }
 950         p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
 951         if( p_track->fmt.i_extra > 0 )
 952         {
 953             p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
 954             memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
 955                     p_track->fmt.i_extra );
 956         }
 957     }
 958     else
 959     {
 960         switch( p_sample->i_type )
 961         {
 962             /* qt decoder, send the complete chunk */
 963             case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
 964             case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
 965             case VLC_FOURCC( 'V', 'P', '3', '1' ):
 966             case VLC_FOURCC( '3', 'I', 'V', '1' ):
 967             case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
 968                 p_track->fmt.i_extra =
 969                     p_sample->data.p_sample_vide->i_qt_image_description;
 970                 if( p_track->fmt.i_extra > 0 )
 971                 {
 972                     p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
 973                     memcpy( p_track->fmt.p_extra,
 974                             p_sample->data.p_sample_vide->p_qt_image_description,
 975                             p_track->fmt.i_extra);
 976                 }
 977                 break;
 978             case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
 979             case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
 980             case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
 981             case VLC_FOURCC( 's', 'a', 'm', 'r' ):
 982                 p_track->fmt.i_extra =
 983                     p_sample->data.p_sample_soun->i_qt_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_soun->p_qt_description,
 989                             p_track->fmt.i_extra);
 990                 }
 991                 break;
 992             default:
 993                 break;
 994         }
 995     }
 996
 997 #undef p_decconfig
 998
 999     /* some last initialisation */
1000     /* XXX I create a bitmapinfoheader_t or
1001        waveformatex_t for each stream, up to now it's the best thing
1002        I've found but it could exist a better solution :) as something
1003        like adding some new fields in p_es ...
1004
1005        XXX I don't set all values, only thoses that are interesting or known
1006         --> bitmapinfoheader_t : width and height
1007         --> waveformatex_t : channels, samplerate, bitspersample
1008         and at the end I add p_decoder_specific_info
1009
1010         TODO set more values
1011
1012      */
1013
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             {
1023                 p_track->fmt.video.i_width = p_track->i_width;
1024             }
1025             if( p_track->fmt.video.i_height <= 0 )
1026             {
1027                 p_track->fmt.video.i_height = p_track->i_height;
1028             }
1029             break;
1030
1031         case( AUDIO_ES ):
1032             p_track->fmt.audio.i_channels = p_sample->data.p_sample_soun->i_channelcount;
1033             p_track->fmt.audio.i_rate = p_sample->data.p_sample_soun->i_sampleratehi;
1034             p_track->fmt.i_bitrate =p_sample->data.p_sample_soun->i_channelcount *
1035                                     p_sample->data.p_sample_soun->i_sampleratehi *
1036                                     p_sample->data.p_sample_soun->i_samplesize;
1037             p_track->fmt.audio.i_bitspersample = p_sample->data.p_sample_soun->i_samplesize;
1038             break;
1039
1040         default:
1041             break;
1042     }
1043     *pp_es = es_out_Add( p_input->p_es_out, &p_track->fmt );
1044
1045     return VLC_SUCCESS;
1046 }
1047
1048 /* given a time it return sample/chunk */
1049 static int  TrackTimeToSampleChunk( input_thread_t *p_input,
1050                                     track_data_mp4_t *p_track,
1051                                     uint64_t i_start,
1052                                     uint32_t *pi_chunk,
1053                                     uint32_t *pi_sample )
1054 {
1055     MP4_Box_t    *p_stss;
1056     uint64_t     i_dts;
1057     unsigned int i_sample;
1058     unsigned int i_chunk;
1059     int          i_index;
1060
1061     /* convert absolute time to in timescale unit */
1062     i_start = i_start * (mtime_t)p_track->i_timescale / (mtime_t)1000000;
1063
1064     /* FIXME see if it's needed to check p_track->i_chunk_count */
1065     if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1066     {
1067         return( VLC_EGENERIC );
1068     }
1069
1070     /* we start from sample 0/chunk 0, hope it won't take too much time */
1071     /* *** find good chunk *** */
1072     for( i_chunk = 0; ; i_chunk++ )
1073     {
1074         if( i_chunk + 1 >= p_track->i_chunk_count )
1075         {
1076             /* at the end and can't check if i_start in this chunk,
1077                it will be check while searching i_sample */
1078             i_chunk = p_track->i_chunk_count - 1;
1079             break;
1080         }
1081
1082         if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1083             i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
1084         {
1085             break;
1086         }
1087     }
1088
1089     /* *** find sample in the chunk *** */
1090     i_sample = p_track->chunk[i_chunk].i_sample_first;
1091     i_dts    = p_track->chunk[i_chunk].i_first_dts;
1092     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1093     {
1094         if( i_dts +
1095             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1096             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1097         {
1098             i_dts    +=
1099                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1100                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1101
1102             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1103             i_index++;
1104         }
1105         else
1106         {
1107             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1108             {
1109                 break;
1110             }
1111             i_sample += ( i_start - i_dts ) / p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1112             break;
1113         }
1114     }
1115
1116     if( i_sample >= p_track->i_sample_count )
1117     {
1118         msg_Warn( p_input,
1119                   "track[Id 0x%x] will be disabled (seeking too far) chunk=%d sample=%d",
1120                   p_track->i_track_ID, i_chunk, i_sample );
1121         return( VLC_EGENERIC );
1122     }
1123
1124
1125     /* *** Try to find nearest sync points *** */
1126     if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1127     {
1128         unsigned int i_index;
1129         msg_Dbg( p_input,
1130                     "track[Id 0x%x] using Sync Sample Box (stss)",
1131                     p_track->i_track_ID );
1132         for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1133         {
1134             if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1135             {
1136                 if( i_index > 0 )
1137                 {
1138                     msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1139                             i_sample,
1140                             p_stss->data.p_stss->i_sample_number[i_index-1] );
1141                     i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1142                     /* new i_sample is less than old so i_chunk can only decreased */
1143                     while( i_chunk > 0 &&
1144                             i_sample < p_track->chunk[i_chunk].i_sample_first )
1145                     {
1146                         i_chunk--;
1147                     }
1148                 }
1149                 else
1150                 {
1151                     msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1152                             i_sample,
1153                             p_stss->data.p_stss->i_sample_number[i_index] );
1154                     i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1155                     /* new i_sample is more than old so i_chunk can only increased */
1156                     while( i_chunk < p_track->i_chunk_count - 1 &&
1157                            i_sample >= p_track->chunk[i_chunk].i_sample_first +
1158                                                 p_track->chunk[i_chunk].i_sample_count )
1159                     {
1160                         i_chunk++;
1161                     }
1162                 }
1163                 break;
1164             }
1165         }
1166     }
1167     else
1168     {
1169         msg_Dbg( p_input,
1170                     "track[Id 0x%x] does not provide Sync Sample Box (stss)",
1171                     p_track->i_track_ID );
1172     }
1173
1174     if( pi_chunk  ) *pi_chunk  = i_chunk;
1175     if( pi_sample ) *pi_sample = i_sample;
1176     return( VLC_SUCCESS );
1177 }
1178
1179 static int  TrackGotoChunkSample( input_thread_t   *p_input,
1180                                   track_data_mp4_t *p_track,
1181                                   unsigned int     i_chunk,
1182                                   unsigned int     i_sample )
1183 {
1184     vlc_bool_t b_reselect = VLC_FALSE;
1185
1186     /* now see if actual es is ok */
1187     if( p_track->i_chunk < 0 ||
1188         p_track->i_chunk >= p_track->i_chunk_count ||
1189         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1190             p_track->chunk[i_chunk].i_sample_description_index )
1191     {
1192         msg_Warn( p_input, "Recreate ES" );
1193
1194         es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, p_track->p_es, &b_reselect );
1195
1196         es_out_Del( p_input->p_es_out, p_track->p_es );
1197
1198         p_track->p_es = NULL;
1199
1200         if( TrackCreateES( p_input,
1201                            p_track, i_chunk,
1202                            &p_track->p_es ) )
1203         {
1204             msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1205                      p_track->i_track_ID );
1206
1207             p_track->b_ok       = VLC_FALSE;
1208             p_track->b_selected = VLC_FALSE;
1209             return VLC_EGENERIC;
1210         }
1211     }
1212
1213     /* select again the new decoder */
1214     if( b_reselect )
1215     {
1216         es_out_Control( p_input->p_es_out, ES_OUT_SET_ES, p_track->p_es );
1217     }
1218
1219     p_track->i_chunk    = i_chunk;
1220     p_track->i_sample   = i_sample;
1221
1222     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1223 }
1224
1225 /****************************************************************************
1226  * MP4_TrackCreate:
1227  ****************************************************************************
1228  * Parse track information and create all needed data to run a track
1229  * If it succeed b_ok is set to 1 else to 0
1230  ****************************************************************************/
1231 static void MP4_TrackCreate( input_thread_t *p_input,
1232                              track_data_mp4_t *p_track,
1233                              MP4_Box_t  * p_box_trak )
1234 {
1235     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1236     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1237     MP4_Box_t *p_elst;
1238
1239     MP4_Box_t *p_mdhd;
1240     MP4_Box_t *p_hdlr;
1241
1242     MP4_Box_t *p_vmhd;
1243     MP4_Box_t *p_smhd;
1244
1245     unsigned int i;
1246     char language[4];
1247
1248     /* hint track unsuported */
1249
1250     /* set default value (-> track unusable) */
1251     p_track->b_ok       = VLC_FALSE;
1252     p_track->b_enable   = VLC_FALSE;
1253     p_track->b_selected = VLC_FALSE;
1254
1255     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1256
1257     if( !p_tkhd )
1258     {
1259         return;
1260     }
1261
1262     /* do we launch this track by default ? */
1263     p_track->b_enable =
1264         ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1265
1266     p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1267     p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1268     p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1269
1270     if( ( p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1271     {
1272 /*        msg_Warn( p_input, "unhandled box: edts --> FIXME" ); */
1273     }
1274
1275     if( p_tref )
1276     {
1277 /*        msg_Warn( p_input, "unhandled box: tref --> FIXME" ); */
1278     }
1279
1280     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1281     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1282
1283     if( ( !p_mdhd )||( !p_hdlr ) )
1284     {
1285         return;
1286     }
1287
1288     p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1289
1290     for( i = 0; i < 3; i++ )
1291     {
1292         language[i] = p_mdhd->data.p_mdhd->i_language[i];
1293     }
1294     language[3] = '\0';
1295
1296     switch( p_hdlr->data.p_hdlr->i_handler_type )
1297     {
1298         case( FOURCC_soun ):
1299             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1300             {
1301                 return;
1302             }
1303             p_track->fmt.i_cat = AUDIO_ES;
1304             break;
1305
1306         case( FOURCC_vide ):
1307             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1308             {
1309                 return;
1310             }
1311             p_track->fmt.i_cat = VIDEO_ES;
1312             break;
1313
1314         default:
1315             return;
1316     }
1317 /*  TODO
1318     add support for:
1319     p_dinf = MP4_BoxGet( p_minf, "dinf" );
1320 */
1321     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1322         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1323     {
1324         return;
1325     }
1326
1327     /* Set language */
1328     if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1329     {
1330         p_track->fmt.psz_language = strdup( language );
1331     }
1332
1333     /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1334     if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1335     {
1336         MP4_Box_t *p_sample;
1337
1338         p_sample = MP4_BoxGet(  p_track->p_stsd, "[0]" );
1339         if( p_sample && p_sample->data.p_sample_soun)
1340         {
1341             MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1342             if( p_soun->i_qt_version == 0 && p_track->i_timescale != p_soun->i_sampleratehi )
1343             {
1344                 msg_Warn( p_input, "i_timescale != i_sampleratehi with qt_version == 0\nMaking both equal ? (report any problem)" );
1345                 p_track->i_timescale = p_soun->i_sampleratehi;
1346             }
1347         }
1348     }
1349
1350     /* Create chunk index table and sample index table */
1351     if( TrackCreateChunksIndex( p_input,p_track  ) ||
1352         TrackCreateSamplesIndex( p_input, p_track ) )
1353     {
1354         return; /* cannot create chunks index */
1355     }
1356
1357     p_track->i_chunk  = 0;
1358     p_track->i_sample = 0;
1359
1360     /* now create es */
1361     if( TrackCreateES( p_input,
1362                        p_track, p_track->i_chunk,
1363                        &p_track->p_es ) )
1364     {
1365         msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1366                  p_track->i_track_ID );
1367         return;
1368     }
1369
1370 #if 0
1371     {
1372         int i;
1373         for( i = 0; i < p_track->i_chunk_count; i++ )
1374         {
1375             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n", i, p_track->chunk[i].i_sample_count, p_track->chunk[i].i_first_dts );
1376
1377         }
1378     }
1379 #endif
1380     p_track->b_ok = VLC_TRUE;
1381 }
1382
1383 /****************************************************************************
1384  * MP4_TrackDestroy:
1385  ****************************************************************************
1386  * Destroy a track created by MP4_TrackCreate.
1387  ****************************************************************************/
1388 static void MP4_TrackDestroy( input_thread_t *p_input,
1389                               track_data_mp4_t *p_track )
1390 {
1391     unsigned int i_chunk;
1392
1393     p_track->b_ok = VLC_FALSE;
1394     p_track->b_enable   = VLC_FALSE;
1395     p_track->b_selected = VLC_FALSE;
1396
1397     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1398
1399     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1400     {
1401         if( p_track->chunk )
1402         {
1403            FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1404            FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1405         }
1406     }
1407     FREE( p_track->chunk );
1408
1409     if( !p_track->i_sample_size )
1410     {
1411         FREE( p_track->p_sample_size );
1412     }
1413 }
1414
1415 static int  MP4_TrackSelect ( input_thread_t    *p_input,
1416                               track_data_mp4_t  *p_track,
1417                               mtime_t           i_start )
1418 {
1419     uint32_t i_chunk;
1420     uint32_t i_sample;
1421
1422     if( !p_track->b_ok )
1423     {
1424         return( VLC_EGENERIC );
1425     }
1426
1427     if( p_track->b_selected )
1428     {
1429         msg_Warn( p_input,
1430                   "track[Id 0x%x] already selected",
1431                   p_track->i_track_ID );
1432         return( VLC_SUCCESS );
1433     }
1434
1435     if( TrackTimeToSampleChunk( p_input,
1436                                 p_track, i_start,
1437                                 &i_chunk, &i_sample ) )
1438     {
1439         msg_Warn( p_input,
1440                   "cannot select track[Id 0x%x]",
1441                   p_track->i_track_ID );
1442         return( VLC_EGENERIC );
1443     }
1444
1445     p_track->b_selected = VLC_TRUE;
1446
1447     if( TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample ) )
1448     {
1449         p_track->b_selected = VLC_FALSE;
1450     }
1451     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1452 }
1453
1454 static void MP4_TrackUnselect(input_thread_t    *p_input,
1455                               track_data_mp4_t  *p_track )
1456 {
1457     if( !p_track->b_ok )
1458     {
1459         return;
1460     }
1461
1462     if( !p_track->b_selected )
1463     {
1464         msg_Warn( p_input,
1465                   "track[Id 0x%x] already unselected",
1466                   p_track->i_track_ID );
1467         return;
1468     }
1469     if( p_track->p_es )
1470     {
1471         es_out_Control( p_input->p_es_out, ES_OUT_SET_ES_STATE, p_track->p_es, VLC_FALSE );
1472     }
1473
1474     p_track->b_selected = VLC_FALSE;
1475 }
1476
1477 static int  MP4_TrackSeek   ( input_thread_t    *p_input,
1478                               track_data_mp4_t  *p_track,
1479                               mtime_t           i_start )
1480 {
1481     uint32_t i_chunk;
1482     uint32_t i_sample;
1483
1484     if( !p_track->b_ok )
1485     {
1486         return( VLC_EGENERIC );
1487     }
1488
1489     if( TrackTimeToSampleChunk( p_input,
1490                                 p_track, i_start,
1491                                 &i_chunk, &i_sample ) )
1492     {
1493         msg_Warn( p_input,
1494                   "cannot select track[Id 0x%x]",
1495                   p_track->i_track_ID );
1496         return( VLC_EGENERIC );
1497     }
1498
1499     p_track->b_selected = VLC_TRUE;
1500
1501     TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample );
1502
1503     return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1504 }
1505
1506
1507
1508
1509
1510 /*
1511  * 3 types: for audio
1512  *
1513  */
1514 #define QT_V0_MAX_SAMPLES    1500
1515 static int  MP4_TrackSampleSize( track_data_mp4_t   *p_track )
1516 {
1517     int i_size;
1518     MP4_Box_data_sample_soun_t *p_soun;
1519
1520     if( p_track->i_sample_size == 0 )
1521     {
1522         /* most simple case */
1523         return( p_track->p_sample_size[p_track->i_sample] );
1524     }
1525     if( p_track->fmt.i_cat != AUDIO_ES )
1526     {
1527         return( p_track->i_sample_size );
1528     }
1529
1530     if( p_track->i_sample_size != 1 )
1531     {
1532         //msg_Warn( p_input, "SampleSize != 1" );
1533         return( p_track->i_sample_size );
1534     }
1535
1536     p_soun = p_track->p_sample->data.p_sample_soun;
1537
1538     if( p_soun->i_qt_version == 1 )
1539     {
1540         i_size = p_track->chunk[p_track->i_chunk].i_sample_count / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
1541     }
1542     else
1543     {
1544         /* FIXME */
1545         int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
1546                 ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first );
1547         if( i_samples > QT_V0_MAX_SAMPLES )
1548         {
1549             i_samples = QT_V0_MAX_SAMPLES;
1550         }
1551         i_size = i_samples * p_soun->i_channelcount * p_soun->i_samplesize / 8;
1552     }
1553
1554     //fprintf( stderr, "size=%d\n", i_size );
1555     return( i_size );
1556 }
1557
1558
1559 static uint64_t MP4_GetTrackPos( track_data_mp4_t *p_track )
1560 {
1561     unsigned int i_sample;
1562     uint64_t i_pos;
1563
1564
1565     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
1566
1567     if( p_track->i_sample_size )
1568     {
1569         MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
1570
1571         if( p_soun->i_qt_version == 0 )
1572         {
1573             i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) *
1574                         p_soun->i_channelcount * p_soun->i_samplesize / 8;
1575         }
1576         else
1577         {
1578             /* we read chunk by chunk */
1579             i_pos += 0;
1580         }
1581     }
1582     else
1583     {
1584         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
1585                 i_sample < p_track->i_sample; i_sample++ )
1586         {
1587             i_pos += p_track->p_sample_size[i_sample];
1588         }
1589
1590     }
1591     return( i_pos );
1592 }
1593
1594 static int  MP4_TrackNextSample( input_thread_t     *p_input,
1595                                  track_data_mp4_t   *p_track )
1596 {
1597
1598     if( p_track->fmt.i_cat == AUDIO_ES &&
1599         p_track->i_sample_size != 0 )
1600     {
1601         MP4_Box_data_sample_soun_t *p_soun;
1602
1603         p_soun = p_track->p_sample->data.p_sample_soun;
1604
1605         if( p_soun->i_qt_version == 1 )
1606         {
1607             /* chunk by chunk */
1608             p_track->i_sample =
1609                 p_track->chunk[p_track->i_chunk].i_sample_first +
1610                 p_track->chunk[p_track->i_chunk].i_sample_count;
1611         }
1612         else
1613         {
1614             /* FIXME */
1615             p_track->i_sample += QT_V0_MAX_SAMPLES;
1616             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 )
1617             {
1618                 p_track->i_sample =
1619                     p_track->chunk[p_track->i_chunk].i_sample_first +
1620                     p_track->chunk[p_track->i_chunk].i_sample_count;
1621             }
1622         }
1623     }
1624     else
1625     {
1626         p_track->i_sample++;
1627     }
1628
1629     if( p_track->i_sample >= p_track->i_sample_count )
1630     {
1631         /* we have reach end of the track so free decoder stuff */
1632         msg_Warn( p_input, "track[0x%x] will be disabled", p_track->i_track_ID );
1633         MP4_TrackUnselect( p_input, p_track );
1634         return( VLC_EGENERIC );
1635     }
1636
1637     /* Have we changed chunk ? */
1638     if( p_track->i_sample >=
1639             p_track->chunk[p_track->i_chunk].i_sample_first +
1640             p_track->chunk[p_track->i_chunk].i_sample_count )
1641     {
1642         if( TrackGotoChunkSample( p_input,
1643                                   p_track,
1644                                   p_track->i_chunk + 1,
1645                                   p_track->i_sample ) )
1646         {
1647             msg_Warn( p_input, "track[0x%x] will be disabled (cannot restart decoder)", p_track->i_track_ID );
1648             MP4_TrackUnselect( p_input, p_track );
1649             return( VLC_EGENERIC );
1650         }
1651     }
1652
1653     return( VLC_SUCCESS );
1654 }
1655
1656