git.sesse.net Git - vlc/blob - modules/demux/mp4/mp4.c

   1 /*****************************************************************************
   2  * mp4.c : MP4 file input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004, 2010 VLC authors and VideoLAN
   5  *
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU Lesser General Public License as published by
  10  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include "mp4.h"
  32
  33 #include <vlc_plugin.h>
  34
  35 #include <vlc_demux.h>
  36 #include <vlc_charset.h>                           /* EnsureUTF8 */
  37 #include <vlc_input.h>
  38 #include <vlc_aout.h>
  39 #include <assert.h>
  40 #include <limits.h>
  41
  42 /*****************************************************************************
  43  * Module descriptor
  44  *****************************************************************************/
  45 static int  Open ( vlc_object_t * );
  46 static void Close( vlc_object_t * );
  47
  48 vlc_module_begin ()
  49     set_category( CAT_INPUT )
  50     set_subcategory( SUBCAT_INPUT_DEMUX )
  51     set_description( N_("MP4 stream demuxer") )
  52     set_shortname( N_("MP4") )
  53     set_capability( "demux", 240 )
  54     set_callbacks( Open, Close )
  55 vlc_module_end ()
  56
  57 /*****************************************************************************
  58  * Local prototypes
  59  *****************************************************************************/
  60 static int   Demux   ( demux_t * );
  61 static int   DemuxRef( demux_t *p_demux ){ (void)p_demux; return 0;}
  62 static int   DemuxFrg( demux_t * );
  63 static int   DemuxAsLeaf( demux_t * );
  64 static int   Seek    ( demux_t *, mtime_t );
  65 static int   Control ( demux_t *, int, va_list );
  66
  67 struct demux_sys_t
  68 {
  69     MP4_Box_t    *p_root;      /* container for the whole file */
  70
  71     mtime_t      i_pcr;
  72
  73     uint64_t     i_overall_duration; /* Full duration, including all fragments */
  74     uint64_t     i_time;         /* time position of the presentation
  75                                   * in movie timescale */
  76     uint32_t     i_timescale;    /* movie time scale */
  77     uint64_t     i_duration;     /* movie duration */
  78     unsigned int i_tracks;       /* number of tracks */
  79     mp4_track_t  *track;         /* array of track */
  80     float        f_fps;          /* number of frame per seconds */
  81
  82     bool         b_fragmented;   /* fMP4 */
  83     bool         b_seekable;
  84     bool         b_fastseekable;
  85     bool         b_seekmode;
  86     bool         b_smooth;       /* Is it Smooth Streaming? */
  87     bool         b_dash;
  88
  89     bool            b_index_probed;
  90     bool            b_fragments_probed;
  91     mp4_fragment_t  moovfragment; /* moov */
  92     mp4_fragment_t *p_fragments;  /* known fragments (moof following moov) */
  93
  94     struct
  95     {
  96         mp4_fragment_t *p_fragment;
  97         uint32_t        i_current_box_type;
  98         uint32_t        i_mdatbytesleft;
  99         uint32_t        i_lastseqnumber;
 100     } context;
 101
 102     /* */
 103     MP4_Box_t    *p_tref_chap;
 104
 105     /* */
 106     input_title_t *p_title;
 107
 108     /* ASF in MP4 */
 109     asf_packet_sys_t asfpacketsys;
 110     uint64_t i_preroll;         /* foobar */
 111     int64_t  i_preroll_start;
 112     mp4_track_t *p_current_track; /* avoids matching stream_number */
 113 };
 114
 115 /*****************************************************************************
 116  * Declaration of local function
 117  *****************************************************************************/
 118 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *, bool b_force_enable );
 119 static int MP4_frg_TrackCreate( demux_t *, mp4_track_t *, MP4_Box_t *);
 120 static void MP4_TrackDestroy(  mp4_track_t * );
 121
 122 static block_t * MP4_Block_Read( demux_t *, const mp4_track_t *, int );
 123 static void MP4_Block_Send( demux_t *, mp4_track_t *, block_t * );
 124
 125 static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
 126 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
 127
 128 static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
 129
 130 static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
 131 static uint32_t MP4_TrackGetReadSize( mp4_track_t *, uint32_t * );
 132 static int      MP4_TrackNextSample( demux_t *, mp4_track_t *, uint32_t );
 133 static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
 134
 135 static void     MP4_UpdateSeekpoint( demux_t * );
 136
 137 static MP4_Box_t * MP4_GetTrexByTrackID( MP4_Box_t *p_moov, const uint32_t i_id );
 138 static void MP4_GetDefaultSizeAndDuration( demux_t *p_demux,
 139                                            const MP4_Box_data_tfhd_t *p_tfhd_data,
 140                                            uint32_t *pi_default_size,
 141                                            uint32_t *pi_default_duration );
 142
 143 static bool AddFragment( demux_t *p_demux, MP4_Box_t *p_moox );
 144 static int  ProbeFragments( demux_t *p_demux, bool b_force );
 145 static int  ProbeIndex( demux_t *p_demux );
 146 static mp4_fragment_t *GetFragmentByPos( demux_t *p_demux, uint64_t i_pos, bool b_exact );
 147 static mp4_fragment_t *GetFragmentByTime( demux_t *p_demux, const mtime_t i_time );
 148
 149 static int LeafIndexGetMoofPosByTime( demux_t *p_demux, const mtime_t i_target_time,
 150                                       uint64_t *pi_pos, mtime_t *pi_mooftime );
 151 static mtime_t LeafGetTrackFragmentTimeOffset( demux_t *p_demux, mp4_fragment_t *, unsigned int );
 152 static int LeafGetTrackAndChunkByMOOVPos( demux_t *p_demux, uint64_t *pi_pos,
 153                                       mp4_track_t **pp_tk, unsigned int *pi_chunk );
 154 static int LeafMapTrafTrunContextes( demux_t *p_demux, MP4_Box_t *p_moof );
 155
 156 /* ASF Handlers */
 157 static asf_track_info_t * MP4ASF_GetTrackInfo( asf_packet_sys_t *p_packetsys, uint8_t i_stream_number );
 158 static void MP4ASF_Send(asf_packet_sys_t *p_packetsys, uint8_t i_stream_number, block_t **pp_frame);
 159 static void MP4ASF_ResetFrames( demux_sys_t *p_sys );
 160
 161 /* Helpers */
 162
 163 static uint32_t stream_ReadU32( stream_t *s, void *p_read, uint32_t i_toread )
 164 {
 165     uint32_t i_return = 0;
 166     if ( i_toread > INT32_MAX )
 167     {
 168         i_return = stream_Read( s, p_read, INT32_MAX );
 169         if ( i_return < INT32_MAX )
 170             return i_return;
 171         else
 172             i_toread -= INT32_MAX;
 173     }
 174     i_return += stream_Read( s, (uint8_t *)p_read + i_return, (int32_t) i_toread );
 175     return i_return;
 176 }
 177
 178 static bool MP4_stream_Tell( stream_t *s, uint64_t *pi_pos )
 179 {
 180     int64_t i_pos = stream_Tell( s );
 181     if ( i_pos < 0 )
 182         return false;
 183     else
 184     {
 185         *pi_pos = (uint64_t) i_pos;
 186         return true;
 187     }
 188 }
 189
 190 static mtime_t GetTrackDurationInFragment( const mp4_fragment_t *p_fragment,
 191                                            unsigned int i_track_ID )
 192 {
 193     for( unsigned int i=0; i<p_fragment->i_durations; i++ )
 194     {
 195         if( i_track_ID == p_fragment->p_durations[i].i_track_ID )
 196             return p_fragment->p_durations[i].i_duration;
 197     }
 198     return 0;
 199 }
 200
 201 static MP4_Box_t * MP4_GetTrexByTrackID( MP4_Box_t *p_moov, const uint32_t i_id )
 202 {
 203     if(!p_moov)
 204         return NULL;
 205     MP4_Box_t *p_trex = MP4_BoxGet( p_moov, "mvex/trex" );
 206     while( p_trex )
 207     {
 208         if ( p_trex->i_type == ATOM_trex &&
 209              BOXDATA(p_trex) && BOXDATA(p_trex)->i_track_ID == i_id )
 210                 break;
 211         else
 212             p_trex = p_trex->p_next;
 213     }
 214     return p_trex;
 215 }
 216
 217 static MP4_Box_t * MP4_GetTrakByTrackID( MP4_Box_t *p_moov, const uint32_t i_id )
 218 {
 219     MP4_Box_t *p_trak = MP4_BoxGet( p_moov, "trak" );
 220     MP4_Box_t *p_tkhd;
 221     while( p_trak )
 222     {
 223         if( p_trak->i_type == ATOM_trak &&
 224             (p_tkhd = MP4_BoxGet( p_trak, "tkhd" )) && BOXDATA(p_tkhd) &&
 225             BOXDATA(p_tkhd)->i_track_ID == i_id )
 226                 break;
 227         else
 228             p_trak = p_trak->p_next;
 229     }
 230     return p_trak;
 231 }
 232
 233 /* Return time in microsecond of a track */
 234 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
 235 {
 236     demux_sys_t *p_sys = p_demux->p_sys;
 237     const mp4_chunk_t *p_chunk;
 238     if( p_sys->b_fragmented )
 239         p_chunk = p_track->cchunk;
 240     else
 241         p_chunk = &p_track->chunk[p_track->i_chunk];
 242
 243     unsigned int i_index = 0;
 244     unsigned int i_sample = p_track->i_sample - p_chunk->i_sample_first;
 245     int64_t i_dts = p_chunk->i_first_dts;
 246
 247     while( i_sample > 0 )
 248     {
 249         if( i_sample > p_chunk->p_sample_count_dts[i_index] )
 250         {
 251             i_dts += p_chunk->p_sample_count_dts[i_index] *
 252                 p_chunk->p_sample_delta_dts[i_index];
 253             i_sample -= p_chunk->p_sample_count_dts[i_index];
 254             i_index++;
 255         }
 256         else
 257         {
 258             i_dts += i_sample * p_chunk->p_sample_delta_dts[i_index];
 259             break;
 260         }
 261     }
 262
 263     /* now handle elst */
 264     if( p_track->p_elst )
 265     {
 266         demux_sys_t         *p_sys = p_demux->p_sys;
 267         MP4_Box_data_elst_t *elst = p_track->BOXDATA(p_elst);
 268
 269         /* convert to offset */
 270         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
 271               elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
 272             elst->i_media_time[p_track->i_elst] > 0 )
 273         {
 274             i_dts -= elst->i_media_time[p_track->i_elst];
 275         }
 276
 277         /* add i_elst_time */
 278         i_dts += p_track->i_elst_time * p_track->i_timescale /
 279             p_sys->i_timescale;
 280
 281         if( i_dts < 0 ) i_dts = 0;
 282     }
 283
 284     return CLOCK_FREQ * i_dts / p_track->i_timescale;
 285 }
 286
 287 static inline bool MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track,
 288                                          int64_t *pi_delta )
 289 {
 290     demux_sys_t *p_sys = p_demux->p_sys;
 291     mp4_chunk_t *ck;
 292     if( p_sys->b_fragmented )
 293         ck = p_track->cchunk;
 294     else
 295         ck = &p_track->chunk[p_track->i_chunk];
 296
 297     unsigned int i_index = 0;
 298     unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
 299
 300     if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
 301         return false;
 302
 303     for( i_index = 0;; i_index++ )
 304     {
 305         if( i_sample < ck->p_sample_count_pts[i_index] )
 306         {
 307             *pi_delta = ck->p_sample_offset_pts[i_index] * CLOCK_FREQ /
 308                         (int64_t)p_track->i_timescale;
 309             return true;
 310         }
 311
 312         i_sample -= ck->p_sample_count_pts[i_index];
 313     }
 314     return false;
 315 }
 316
 317 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
 318 {
 319     return CLOCK_FREQ * p_sys->i_time / p_sys->i_timescale;
 320 }
 321
 322 static void LoadChapter( demux_t  *p_demux );
 323
 324 static int LoadInitFrag( demux_t *p_demux )
 325 {
 326     demux_sys_t *p_sys = p_demux->p_sys;
 327
 328     if( p_sys->b_smooth ) /* Smooth Streaming */
 329     {
 330         if( ( p_sys->p_root = MP4_BoxGetSmooBox( p_demux->s ) ) == NULL )
 331         {
 332             goto LoadInitFragError;
 333         }
 334         else
 335         {
 336             MP4_Box_t *p_smoo = MP4_BoxGet( p_sys->p_root, "uuid" );
 337             if( !p_smoo || CmpUUID( &p_smoo->i_uuid, &SmooBoxUUID ) )
 338                 goto LoadInitFragError;
 339             /* Get number of tracks */
 340             p_sys->i_tracks = 0;
 341             for( int i = 0; i < 3; i++ )
 342             {
 343                 MP4_Box_t *p_stra = MP4_BoxGet( p_smoo, "uuid[%d]", i );
 344                 if( p_stra && BOXDATA(p_stra) && BOXDATA(p_stra)->i_track_ID )
 345                     p_sys->i_tracks++;
 346                 /* Get timescale and duration of the video track; */
 347                 if( p_sys->i_timescale == 0 )
 348                 {
 349                     if ( p_stra && BOXDATA(p_stra) )
 350                     {
 351                         p_sys->i_timescale = BOXDATA(p_stra)->i_timescale;
 352                         p_sys->i_duration = BOXDATA(p_stra)->i_duration;
 353                         p_sys->i_overall_duration = BOXDATA(p_stra)->i_duration;
 354                     }
 355                     if( p_sys->i_timescale == 0 )
 356                     {
 357                         msg_Err( p_demux, "bad timescale" );
 358                         goto LoadInitFragError;
 359                     }
 360                 }
 361             }
 362         }
 363     }
 364     else
 365     {
 366         /* Load all boxes ( except raw data ) */
 367         if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
 368         {
 369             goto LoadInitFragError;
 370         }
 371     }
 372     return VLC_SUCCESS;
 373
 374 LoadInitFragError:
 375     msg_Warn( p_demux, "MP4 plugin discarded (not a valid initialization chunk)" );
 376     return VLC_EGENERIC;
 377 }
 378
 379 static int InitTracks( demux_t *p_demux )
 380 {
 381     demux_sys_t *p_sys = p_demux->p_sys;
 382
 383     p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
 384     if( p_sys->track == NULL )
 385         return VLC_EGENERIC;
 386
 387     if( p_sys->b_fragmented )
 388     {
 389         mp4_track_t *p_track;
 390         for( uint16_t i = 0; i < p_sys->i_tracks; i++ )
 391         {
 392             p_track = &p_sys->track[i];
 393             p_track->cchunk = calloc( 1, sizeof( mp4_chunk_t ) );
 394             if( unlikely( !p_track->cchunk ) )
 395             {
 396                 free( p_sys->track );
 397                 return VLC_EGENERIC;
 398             }
 399         }
 400     }
 401     return VLC_SUCCESS;
 402 }
 403
 404 static void CreateTracksFromSmooBox( demux_t *p_demux )
 405 {
 406     demux_sys_t *p_sys = p_demux->p_sys;
 407
 408     MP4_Box_t *p_smoo = MP4_BoxGet( p_sys->p_root, "uuid" );
 409     mp4_track_t *p_track;
 410     int j = 0;
 411     for( int i = 0; i < 3; i++ )
 412     {
 413         MP4_Box_t *p_stra = MP4_BoxGet( p_smoo, "uuid[%d]", i );
 414         if( !p_stra || !BOXDATA(p_stra) || BOXDATA(p_stra)->i_track_ID == 0 )
 415             continue;
 416         else
 417         {
 418             p_track = &p_sys->track[j]; j++;
 419             MP4_frg_TrackCreate( p_demux, p_track, p_stra );
 420             p_track->p_es = es_out_Add( p_demux->out, &p_track->fmt );
 421         }
 422     }
 423 }
 424
 425 static block_t * MP4_EIA608_Convert( block_t * p_block )
 426 {
 427     /* Rebuild codec data from encap */
 428     size_t i_copied = 0;
 429     size_t i_remaining = p_block->i_buffer;
 430     uint32_t i_bytes = 0;
 431     block_t *p_newblock;
 432
 433     if ( i_remaining < 10 ||
 434          !(i_bytes = GetDWBE(p_block->p_buffer)) ||
 435          (i_bytes + 8 > i_remaining) ||
 436          memcmp("cdat", &p_block->p_buffer[4], 4) ||
 437          !(p_newblock = block_Alloc( i_remaining * 3 - 8 )) )
 438     {
 439         p_block->i_buffer = 0;
 440         return p_block;
 441     }
 442
 443     uint8_t *p_write = p_newblock->p_buffer;
 444     uint8_t *p_read = &p_block->p_buffer[8];
 445     i_bytes -= 8;
 446     i_remaining -= 8;
 447
 448     do
 449     {
 450         p_write[i_copied++] = 0; /* cc1 == field 0 */
 451         p_write[i_copied++] = p_read[0];
 452         p_write[i_copied++] = p_read[1];
 453         p_read += 2;
 454         i_bytes -= 2;
 455         i_remaining -= 2;
 456     } while( i_bytes >= 2 );
 457
 458     if ( i_remaining >= 10 &&
 459          (i_bytes = GetDWBE(p_read)) &&
 460          (i_bytes + 8 <= i_remaining) &&
 461          !memcmp("cdt2", &p_read[4], 4) )
 462     {
 463         p_read += 8;
 464         i_bytes -= 8;
 465         i_remaining -= 8;
 466         do
 467         {
 468             p_write[i_copied++] = 0; /* cc1 == field 0 */
 469             p_write[i_copied++] = p_read[0];
 470             p_write[i_copied++] = p_read[1];
 471             p_read += 2;
 472             i_bytes -= 2;
 473         } while( i_bytes >= 2 );
 474     }
 475
 476     block_Release( p_block );
 477     p_newblock->i_buffer = i_copied;
 478     return p_newblock;
 479 }
 480
 481 static block_t * MP4_Block_Read( demux_t *p_demux, const mp4_track_t *p_track, int i_size )
 482 {
 483     block_t *p_block = stream_Block( p_demux->s, i_size );
 484     if ( !p_block )
 485         return NULL;
 486
 487     /* might have some encap */
 488     if( p_track->fmt.i_cat == SPU_ES )
 489     {
 490         switch( p_track->fmt.i_codec )
 491         {
 492             case VLC_CODEC_TX3G:
 493             case VLC_CODEC_SPU:
 494             /* accept as-is */
 495             break;
 496             case VLC_CODEC_EIA608_1:
 497                 p_block = MP4_EIA608_Convert( p_block );
 498             break;
 499         default:
 500             p_block->i_buffer = 0;
 501             break;
 502         }
 503     }
 504
 505     return p_block;
 506 }
 507
 508 static void MP4_Block_Send( demux_t *p_demux, mp4_track_t *p_track, block_t *p_block )
 509 {
 510     if ( p_track->b_chans_reorder && aout_BitsPerSample( p_track->fmt.i_codec ) )
 511     {
 512         aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer,
 513                              p_track->fmt.audio.i_channels,
 514                              p_track->rgi_chans_reordering,
 515                              p_track->fmt.i_codec );
 516     }
 517
 518     p_block->i_flags |= p_track->i_block_flags;
 519
 520     /* ASF packets in mov */
 521     if( p_track->p_asf )
 522     {
 523         /* Fake a new stream from MP4 block */
 524         stream_t *p_stream = p_demux->s;
 525         p_demux->s = stream_MemoryNew( p_demux, p_block->p_buffer, p_block->i_buffer, true );
 526         if ( p_demux->s )
 527         {
 528             p_track->i_dts_backup = p_block->i_dts;
 529             p_track->i_pts_backup = p_block->i_pts;
 530             /* And demux it as ASF packet */
 531             DemuxASFPacket( &p_demux->p_sys->asfpacketsys, p_block->i_buffer, p_block->i_buffer );
 532             stream_Delete(p_demux->s);
 533         }
 534         block_Release(p_block);
 535         p_demux->s = p_stream;
 536     }
 537     else
 538         es_out_Send( p_demux->out, p_track->p_es, p_block );
 539 }
 540
 541 /*****************************************************************************
 542  * Open: check file and initializes MP4 structures
 543  *****************************************************************************/
 544 static int Open( vlc_object_t * p_this )
 545 {
 546     demux_t  *p_demux = (demux_t *)p_this;
 547     demux_sys_t     *p_sys;
 548
 549     const uint8_t   *p_peek;
 550
 551     MP4_Box_t       *p_ftyp;
 552     MP4_Box_t       *p_rmra;
 553     MP4_Box_t       *p_mvhd;
 554     MP4_Box_t       *p_trak;
 555
 556     unsigned int    i;
 557     bool      b_enabled_es;
 558
 559     /* A little test to see if it could be a mp4 */
 560     if( stream_Peek( p_demux->s, &p_peek, 11 ) < 11 ) return VLC_EGENERIC;
 561
 562     switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
 563     {
 564         case ATOM_moov:
 565         case ATOM_foov:
 566         case ATOM_moof:
 567         case ATOM_mdat:
 568         case ATOM_udta:
 569         case ATOM_free:
 570         case ATOM_skip:
 571         case ATOM_wide:
 572         case ATOM_uuid:
 573         case VLC_FOURCC( 'p', 'n', 'o', 't' ):
 574             break;
 575         case ATOM_ftyp:
 576             /* We don't yet support f4v, but avformat does. */
 577             if( p_peek[8] == 'f' && p_peek[9] == '4' && p_peek[10] == 'v' )
 578                 return VLC_EGENERIC;
 579             break;
 580          default:
 581             return VLC_EGENERIC;
 582     }
 583
 584     /* create our structure that will contains all data */
 585     p_sys = calloc( 1, sizeof( demux_sys_t ) );
 586     if ( !p_sys )
 587         return VLC_EGENERIC;
 588
 589     /* I need to seek */
 590     stream_Control( p_demux->s, STREAM_CAN_SEEK, &p_sys->b_seekable );
 591     stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_fastseekable );
 592     p_sys->b_seekmode = p_sys->b_fastseekable;
 593
 594     /*Set exported functions */
 595     p_demux->pf_demux = Demux;
 596     p_demux->pf_control = Control;
 597
 598     p_sys->context.i_lastseqnumber = 1;
 599
 600     p_demux->p_sys = p_sys;
 601
 602     if( stream_Peek( p_demux->s, &p_peek, 24 ) < 24 ) return VLC_EGENERIC;
 603     if( !CmpUUID( (UUID_t *)(p_peek + 8), &SmooBoxUUID ) )
 604     {
 605         p_sys->b_smooth = true;
 606         p_sys->b_fragmented = true;
 607     }
 608
 609     if( LoadInitFrag( p_demux ) != VLC_SUCCESS )
 610         goto error;
 611
 612
 613     if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
 614     {
 615         switch( BOXDATA(p_ftyp)->i_major_brand )
 616         {
 617             case MAJOR_isom:
 618                 msg_Dbg( p_demux,
 619                          "ISO Media file (isom) version %d.",
 620                          BOXDATA(p_ftyp)->i_minor_version );
 621                 break;
 622             case MAJOR_3gp4:
 623             case MAJOR_3gp5:
 624             case MAJOR_3gp6:
 625             case MAJOR_3gp7:
 626                 msg_Dbg( p_demux, "3GPP Media file Release: %c",
 627 #ifdef WORDS_BIGENDIAN
 628                         BOXDATA(p_ftyp)->i_major_brand
 629 #else
 630                         BOXDATA(p_ftyp)->i_major_brand >> 24
 631 #endif
 632                         );
 633                 break;
 634             case MAJOR_qt__:
 635                 msg_Dbg( p_demux, "Apple QuickTime file" );
 636                 break;
 637             case MAJOR_isml:
 638                 msg_Dbg( p_demux, "PIFF (= isml = fMP4) file" );
 639                 break;
 640             case MAJOR_dash:
 641                 msg_Dbg( p_demux, "DASH Stream file" );
 642                 p_sys->b_dash = true;
 643                 break;
 644             default:
 645                 msg_Dbg( p_demux,
 646                          "unrecognized major file specification (%4.4s).",
 647                           (char*)&BOXDATA(p_ftyp)->i_major_brand );
 648                 break;
 649         }
 650         /* also lookup in compatibility list */
 651         for(uint32_t i=0; i<BOXDATA(p_ftyp)->i_compatible_brands_count; i++)
 652         {
 653             if (BOXDATA(p_ftyp)->i_compatible_brands[i] == MAJOR_dash)
 654             {
 655                 msg_Dbg( p_demux, "DASH Stream file" );
 656                 p_sys->b_dash = true;
 657             }
 658         }
 659     }
 660     else
 661     {
 662         msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
 663     }
 664
 665     if( MP4_BoxCount( p_sys->p_root, "/moov/mvex" ) > 0 )
 666     {
 667         if ( p_sys->b_seekable && !p_sys->b_smooth && !p_sys->b_dash )
 668         {
 669             /* Probe remaining to check if there's really fragments
 670                or if that file is just ready to append fragments */
 671             ProbeFragments( p_demux, false );
 672             p_sys->b_fragmented = !!MP4_BoxCount( p_sys->p_root, "/moof" );
 673
 674             if ( p_sys->b_fragmented && !p_sys->i_overall_duration )
 675                 ProbeFragments( p_demux, true );
 676         }
 677         else
 678             p_sys->b_fragmented = true;
 679     }
 680
 681     if ( !p_sys->moovfragment.p_moox )
 682         AddFragment( p_demux, MP4_BoxGet( p_sys->p_root, "/moov" ) );
 683
 684     /* we always need a moov entry, but smooth has a workaround */
 685     if ( !p_sys->moovfragment.p_moox && !p_sys->b_smooth )
 686         goto error;
 687
 688     MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
 689
 690     if( p_sys->b_smooth )
 691     {
 692         if( InitTracks( p_demux ) != VLC_SUCCESS )
 693             goto error;
 694         CreateTracksFromSmooBox( p_demux );
 695         p_demux->pf_demux = DemuxFrg;
 696         msg_Dbg( p_demux, "Set DemuxFrg mode" );
 697         return VLC_SUCCESS;
 698     }
 699     else if( p_sys->b_fragmented )
 700     {
 701         p_demux->pf_demux = DemuxAsLeaf;
 702         msg_Dbg( p_demux, "Set experimental DemuxLeaf mode" );
 703     }
 704
 705     if( !p_sys->b_seekable && p_demux->pf_demux == Demux )
 706     {
 707         msg_Warn( p_demux, "MP4 plugin discarded (not seekable)" );
 708         goto error;
 709     }
 710
 711     /* the file need to have one moov box */
 712     p_sys->moovfragment.p_moox = MP4_BoxGet( p_sys->p_root, "/moov", 0 );
 713     if( !p_sys->moovfragment.p_moox )
 714     {
 715         MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
 716
 717         if( !p_foov )
 718         {
 719             msg_Err( p_demux, "MP4 plugin discarded (no moov,foov,moof box)" );
 720             goto error;
 721         }
 722         /* we have a free box as a moov, rename it */
 723         p_foov->i_type = ATOM_moov;
 724         p_sys->moovfragment.p_moox = p_foov;
 725     }
 726
 727     if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
 728     {
 729         int        i_count = MP4_BoxCount( p_rmra, "rmda" );
 730         int        i;
 731
 732         msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
 733
 734         input_thread_t *p_input = demux_GetParentInput( p_demux );
 735         input_item_t *p_current = input_GetItem( p_input );
 736
 737         input_item_node_t *p_subitems = input_item_node_Create( p_current );
 738
 739         for( i = 0; i < i_count; i++ )
 740         {
 741             MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
 742             char      *psz_ref;
 743             uint32_t  i_ref_type;
 744
 745             if( !p_rdrf || !BOXDATA(p_rdrf) || !( psz_ref = strdup( BOXDATA(p_rdrf)->psz_ref ) ) )
 746             {
 747                 continue;
 748             }
 749             i_ref_type = BOXDATA(p_rdrf)->i_ref_type;
 750
 751             msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
 752                      psz_ref, (char*)&i_ref_type );
 753
 754             if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
 755             {
 756                 if( strstr( psz_ref, "qt5gateQT" ) )
 757                 {
 758                     msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
 759                     continue;
 760                 }
 761                 if( !strncmp( psz_ref, "http://", 7 ) ||
 762                     !strncmp( psz_ref, "rtsp://", 7 ) )
 763                 {
 764                     ;
 765                 }
 766                 else
 767                 {
 768                     char *psz_absolute;
 769                     char *psz_path = strdup( p_demux->psz_location );
 770                     char *end = strrchr( psz_path, '/' );
 771                     if( end ) end[1] = '\0';
 772                     else *psz_path = '\0';
 773
 774                     if( asprintf( &psz_absolute, "%s://%s%s",
 775                                   p_demux->psz_access, psz_path, psz_ref ) < 0 )
 776                     {
 777                         free( psz_ref );
 778                         free( psz_path );
 779                         input_item_node_Delete( p_subitems );
 780                         vlc_object_release( p_input) ;
 781                         return VLC_ENOMEM;
 782                     }
 783
 784                     free( psz_ref );
 785                     psz_ref = psz_absolute;
 786                     free( psz_path );
 787                 }
 788                 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
 789                 input_item_t *p_item = input_item_New( psz_ref, NULL );
 790                 input_item_CopyOptions( p_current, p_item );
 791                 input_item_node_AppendItem( p_subitems, p_item );
 792                 vlc_gc_decref( p_item );
 793             }
 794             else
 795             {
 796                 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
 797                          (char*)&BOXDATA(p_rdrf)->i_ref_type );
 798             }
 799             free( psz_ref );
 800         }
 801         input_item_node_PostAndDelete( p_subitems );
 802         vlc_object_release( p_input );
 803     }
 804
 805     if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
 806     {
 807         if( !p_rmra )
 808         {
 809             msg_Err( p_demux, "cannot find /moov/mvhd" );
 810             goto error;
 811         }
 812         else
 813         {
 814             msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
 815             p_demux->pf_demux = DemuxRef;
 816             return VLC_SUCCESS;
 817         }
 818     }
 819     else
 820     {
 821         p_sys->i_timescale = BOXDATA(p_mvhd)->i_timescale;
 822         if( p_sys->i_timescale == 0 )
 823         {
 824             msg_Err( p_this, "bad timescale" );
 825             goto error;
 826         }
 827     }
 828
 829     if ( p_sys->i_overall_duration == 0 )
 830     {
 831         /* Try in mehd if fragmented */
 832         MP4_Box_t *p_mehd = MP4_BoxGet( p_demux->p_sys->p_root, "moov/mvex/mehd");
 833         if ( p_mehd && p_mehd->data.p_mehd )
 834             p_sys->i_overall_duration = p_mehd->data.p_mehd->i_fragment_duration;
 835         else
 836         {
 837             for( i = 0; i < p_sys->i_tracks; i++ )
 838             {
 839                 mtime_t i_duration = GetTrackDurationInFragment( &p_sys->moovfragment,
 840                                                                  p_sys->track[i].i_track_ID );
 841                 p_sys->i_overall_duration = __MAX( p_sys->i_overall_duration, (uint64_t)i_duration );
 842             }
 843         }
 844     }
 845
 846     if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
 847     {
 848         msg_Err( p_demux, "cannot find any /moov/trak" );
 849         goto error;
 850     }
 851     msg_Dbg( p_demux, "found %d track%c",
 852                         p_sys->i_tracks,
 853                         p_sys->i_tracks ? 's':' ' );
 854
 855     if( InitTracks( p_demux ) != VLC_SUCCESS )
 856         goto error;
 857
 858     /* Search the first chap reference (like quicktime) and
 859      * check that at least 1 stream is enabled */
 860     p_sys->p_tref_chap = NULL;
 861     b_enabled_es = false;
 862     for( i = 0; i < p_sys->i_tracks; i++ )
 863     {
 864         MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 865
 866
 867         MP4_Box_t *p_tkhd = MP4_BoxGet( p_trak, "tkhd" );
 868         if( p_tkhd && BOXDATA(p_tkhd) && (BOXDATA(p_tkhd)->i_flags&MP4_TRACK_ENABLED) )
 869             b_enabled_es = true;
 870
 871         MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
 872         if( p_chap && p_chap->data.p_tref_generic &&
 873             p_chap->data.p_tref_generic->i_entry_count > 0 && !p_sys->p_tref_chap )
 874             p_sys->p_tref_chap = p_chap;
 875     }
 876
 877     /* now process each track and extract all useful information */
 878     for( i = 0; i < p_sys->i_tracks; i++ )
 879     {
 880         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
 881         MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak, !b_enabled_es );
 882
 883         if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
 884         {
 885             const char *psz_cat;
 886             switch( p_sys->track[i].fmt.i_cat )
 887             {
 888                 case( VIDEO_ES ):
 889                     psz_cat = "video";
 890                     break;
 891                 case( AUDIO_ES ):
 892                     psz_cat = "audio";
 893                     break;
 894                 case( SPU_ES ):
 895                     psz_cat = "subtitle";
 896                     break;
 897
 898                 default:
 899                     psz_cat = "unknown";
 900                     break;
 901             }
 902
 903             msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
 904                      p_sys->track[i].i_track_ID, psz_cat,
 905                      p_sys->track[i].b_enable ? "enable":"disable",
 906                      p_sys->track[i].fmt.psz_language ?
 907                      p_sys->track[i].fmt.psz_language : "undef" );
 908         }
 909         else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
 910         {
 911             msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
 912                      p_sys->track[i].i_track_ID,
 913                      p_sys->track[i].fmt.psz_language ?
 914                      p_sys->track[i].fmt.psz_language : "undef" );
 915         }
 916         else
 917         {
 918             msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
 919                      p_sys->track[i].i_track_ID );
 920         }
 921     }
 922
 923 #ifdef MP4_VERBOSE
 924     mtime_t i_total_duration = 0;
 925     mp4_fragment_t *p_fragment = &p_sys->moovfragment;
 926     while ( p_fragment && p_sys->i_tracks )
 927     {
 928         if ( (p_fragment != &p_sys->moovfragment || p_fragment->i_chunk_range_max_offset) &&
 929              p_fragment->i_durations && p_fragment->p_durations[0].i_track_ID == p_sys->track[0].i_track_ID )
 930             i_total_duration += CLOCK_FREQ * p_fragment->p_durations[0].i_duration / p_sys->i_timescale;
 931         msg_Dbg( p_demux, "fragment offset %"PRId64", data %"PRIu64"<->%"PRIu64", "
 932                  "duration %"PRId64" @%"PRId64,
 933                  p_fragment->p_moox->i_pos, p_fragment->i_chunk_range_min_offset,
 934                  p_fragment->i_chunk_range_max_offset,
 935                  ( p_fragment->i_durations && p_fragment->p_durations[0].i_track_ID == p_sys->track[0].i_track_ID )?
 936                  CLOCK_FREQ * p_fragment->p_durations[0].i_duration / p_sys->i_timescale : 0, i_total_duration );
 937         p_fragment = p_fragment->p_next;
 938     }
 939 #endif
 940
 941     /* */
 942     LoadChapter( p_demux );
 943
 944     p_sys->asfpacketsys.p_demux = p_demux;
 945     p_sys->asfpacketsys.pi_preroll = &p_sys->i_preroll;
 946     p_sys->asfpacketsys.pi_preroll_start = &p_sys->i_preroll_start;
 947     p_sys->asfpacketsys.pf_doskip = NULL;
 948     p_sys->asfpacketsys.pf_send = MP4ASF_Send;
 949     p_sys->asfpacketsys.pf_gettrackinfo = MP4ASF_GetTrackInfo;
 950     p_sys->asfpacketsys.pf_updatetime = NULL;
 951     p_sys->asfpacketsys.pf_setaspectratio = NULL;
 952
 953     return VLC_SUCCESS;
 954
 955 error:
 956     if( p_sys->p_root )
 957     {
 958         MP4_BoxFree( p_demux->s, p_sys->p_root );
 959     }
 960     free( p_sys );
 961     return VLC_EGENERIC;
 962 }
 963
 964 /*****************************************************************************
 965  * Demux: read packet and send them to decoders
 966  *****************************************************************************
 967  * TODO check for newly selected track (ie audio upt to now )
 968  *****************************************************************************/
 969 static int Demux( demux_t *p_demux )
 970 {
 971     demux_sys_t *p_sys = p_demux->p_sys;
 972     unsigned int i_track;
 973
 974
 975     unsigned int i_track_selected;
 976
 977     /* check for newly selected/unselected track */
 978     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
 979          i_track++ )
 980     {
 981         mp4_track_t *tk = &p_sys->track[i_track];
 982         bool b;
 983
 984         if( !tk->b_ok || tk->b_chapter ||
 985             ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
 986         {
 987             continue;
 988         }
 989
 990         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 991
 992         if( tk->b_selected && !b )
 993         {
 994             MP4_TrackUnselect( p_demux, tk );
 995         }
 996         else if( !tk->b_selected && b)
 997         {
 998             MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
 999         }
1000
1001         if( tk->b_selected )
1002         {
1003             i_track_selected++;
1004         }
1005     }
1006
1007     if( i_track_selected <= 0 )
1008     {
1009         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
1010         if( p_sys->i_timescale > 0 )
1011         {
1012             int64_t i_length = CLOCK_FREQ *
1013                                (mtime_t)p_sys->i_overall_duration /
1014                                (mtime_t)p_sys->i_timescale;
1015             if( MP4_GetMoviePTS( p_sys ) >= i_length )
1016                 return 0;
1017             return 1;
1018         }
1019
1020         msg_Warn( p_demux, "no track selected, exiting..." );
1021         return 0;
1022     }
1023
1024     /* */
1025     MP4_UpdateSeekpoint( p_demux );
1026
1027     /* first wait for the good time to read a packet */
1028     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
1029
1030     bool b_data_sent = false;
1031
1032     /* Find next track matching contiguous data */
1033     mp4_track_t *tk = NULL;
1034     uint64_t i_candidate_pos = UINT64_MAX;
1035     mtime_t i_candidate_dts = INT64_MAX;
1036     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1037     {
1038         mp4_track_t *tk_tmp = &p_sys->track[i_track];
1039         if( !tk_tmp->b_ok || tk_tmp->b_chapter || !tk_tmp->b_selected || tk_tmp->i_sample >= tk_tmp->i_sample_count )
1040             continue;
1041
1042         if ( p_sys->b_seekmode )
1043         {
1044             mtime_t i_dts = MP4_TrackGetDTS( p_demux, tk_tmp );
1045             if ( i_dts <= i_candidate_dts )
1046             {
1047                 tk = tk_tmp;
1048                 i_candidate_dts = i_dts;
1049                 i_candidate_pos = MP4_TrackGetPos( tk_tmp );
1050             }
1051         }
1052         else
1053         {
1054             /* Try to avoid seeking on non fastseekable. Will fail with non interleaved content */
1055             uint64_t i_pos = MP4_TrackGetPos( tk_tmp );
1056             if ( i_pos <= i_candidate_pos )
1057             {
1058                 i_candidate_pos = i_pos;
1059                 tk = tk_tmp;
1060             }
1061         }
1062     }
1063
1064     if ( !tk )
1065     {
1066         msg_Dbg( p_demux, "Could not select track by data position" );
1067         goto end;
1068     }
1069     else if ( p_sys->b_seekmode )
1070     {
1071         if( stream_Seek( p_demux->s, i_candidate_pos ) )
1072         {
1073             msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
1074                       tk->i_track_ID );
1075             MP4_TrackUnselect( p_demux, tk );
1076             goto end;
1077         }
1078     }
1079
1080 #if 0
1081     msg_Dbg( p_demux, "tk(%i)=%"PRId64" mv=%"PRId64" pos=%"PRIu64, tk->i_track_ID,
1082              MP4_TrackGetDTS( p_demux, tk ),
1083              MP4_GetMoviePTS( p_sys ), i_candidate_pos );
1084 #endif
1085
1086     uint32_t i_nb_samples = 0;
1087     uint32_t i_samplessize = MP4_TrackGetReadSize( tk, &i_nb_samples );
1088     if( i_samplessize > 0 )
1089     {
1090         block_t *p_block;
1091         int64_t i_delta;
1092         uint64_t i_current_pos;
1093
1094         /* go,go go ! */
1095         if ( !MP4_stream_Tell( p_demux->s, &i_current_pos ) )
1096             goto end;
1097
1098         if( i_current_pos != i_candidate_pos )
1099         {
1100             if( stream_Seek( p_demux->s, i_candidate_pos ) )
1101             {
1102                 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)"
1103                           ": Failed to seek to %"PRIu64,
1104                           tk->i_track_ID, i_candidate_pos );
1105                 MP4_TrackUnselect( p_demux, tk );
1106                 goto end;
1107             }
1108             i_current_pos = i_candidate_pos;
1109         }
1110
1111         /* now read pes */
1112         if( !(p_block = MP4_Block_Read( p_demux, tk, i_samplessize )) )
1113         {
1114             msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)"
1115                       ": Failed to read %d bytes sample at %"PRIu64,
1116                       tk->i_track_ID, i_samplessize, i_current_pos );
1117             MP4_TrackUnselect( p_demux, tk );
1118             goto end;
1119         }
1120
1121         /* dts */
1122         p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
1123         /* pts */
1124         if( MP4_TrackGetPTSDelta( p_demux, tk, &i_delta ) )
1125             p_block->i_pts = p_block->i_dts + i_delta;
1126         else if( tk->fmt.i_cat != VIDEO_ES )
1127             p_block->i_pts = p_block->i_dts;
1128         else
1129             p_block->i_pts = VLC_TS_INVALID;
1130
1131         if ( !b_data_sent )
1132         {
1133             es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
1134             b_data_sent = true;
1135         }
1136         MP4_Block_Send( p_demux, tk, p_block );
1137     }
1138
1139     /* Next sample */
1140     if ( i_nb_samples ) /* sample size could be 0, need to go fwd. see return */
1141         MP4_TrackNextSample( p_demux, tk, i_nb_samples );
1142
1143 end:
1144     if ( b_data_sent )
1145     {
1146         p_sys->i_pcr = INT64_MAX;
1147         for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1148         {
1149             mp4_track_t *tk = &p_sys->track[i_track];
1150             if ( !tk->b_ok || !tk->b_selected  ||
1151                  (tk->fmt.i_cat != AUDIO_ES && tk->fmt.i_cat != VIDEO_ES) )
1152                 continue;
1153
1154             mtime_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1155             p_sys->i_pcr = __MIN( i_dts, p_sys->i_pcr );
1156
1157             if ( !p_sys->b_seekmode && i_dts > p_sys->i_pcr + 2*CLOCK_FREQ )
1158             {
1159                 msg_Dbg( p_demux, "that media doesn't look interleaved, will need to seek");
1160                 p_sys->b_seekmode = true;
1161             }
1162
1163             p_sys->i_time = p_sys->i_pcr * p_sys->i_timescale / CLOCK_FREQ;
1164         }
1165     }
1166
1167     return b_data_sent || ( i_samplessize == 0 && i_nb_samples );
1168 }
1169
1170 static void MP4_UpdateSeekpoint( demux_t *p_demux )
1171 {
1172     demux_sys_t *p_sys = p_demux->p_sys;
1173     int64_t i_time;
1174     int i;
1175     if( !p_sys->p_title )
1176         return;
1177     i_time = MP4_GetMoviePTS( p_sys );
1178     for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
1179     {
1180         if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
1181             break;
1182     }
1183     i--;
1184
1185     if( i != p_demux->info.i_seekpoint && i >= 0 )
1186     {
1187         p_demux->info.i_seekpoint = i;
1188         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1189     }
1190 }
1191 /*****************************************************************************
1192  * Seek: Go to i_date
1193 ******************************************************************************/
1194 static int Seek( demux_t *p_demux, mtime_t i_date )
1195 {
1196     demux_sys_t *p_sys = p_demux->p_sys;
1197     unsigned int i_track;
1198
1199     /* First update global time */
1200     p_sys->i_time = i_date * p_sys->i_timescale / CLOCK_FREQ;
1201     p_sys->i_pcr  = VLC_TS_INVALID;
1202
1203     /* Now for each stream try to go to this time */
1204     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1205     {
1206         mp4_track_t *tk = &p_sys->track[i_track];
1207         MP4_TrackSeek( p_demux, tk, i_date );
1208     }
1209     MP4_UpdateSeekpoint( p_demux );
1210
1211     MP4ASF_ResetFrames( p_sys );
1212     es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
1213
1214     return VLC_SUCCESS;
1215 }
1216
1217 static int LeafSeekIntoFragment( demux_t *p_demux, mp4_fragment_t *p_fragment )
1218 {
1219     demux_sys_t *p_sys = p_demux->p_sys;
1220     uint64_t i64 = p_fragment->i_chunk_range_min_offset;
1221
1222     if ( p_fragment->p_moox->i_type == ATOM_moov )
1223     {
1224         mp4_track_t *p_track;
1225         unsigned int i_chunk;
1226         int i_ret = LeafGetTrackAndChunkByMOOVPos( p_demux, &i64, &p_track, &i_chunk );
1227         if ( i_ret == VLC_EGENERIC )
1228         {
1229             msg_Dbg( p_demux, "moov seek failed to identify %"PRIu64, i64 );
1230             return i_ret;
1231         }
1232         msg_Dbg( p_demux, "moov seeking to %"PRIu64, i64 );
1233     }
1234     else
1235     {
1236         i64 = p_fragment->i_chunk_range_min_offset;
1237         msg_Dbg( p_demux, "moof seeking to %"PRIu64, i64 );
1238     }
1239
1240     if( stream_Seek( p_demux->s, i64 ) )
1241     {
1242         msg_Err( p_demux, "seek failed to %"PRIu64, i64 );
1243         return VLC_EGENERIC;
1244     }
1245
1246     /* map context */
1247     p_sys->context.p_fragment = p_fragment;
1248     p_sys->context.i_current_box_type = ATOM_mdat;
1249     LeafMapTrafTrunContextes( p_demux, p_fragment->p_moox );
1250     p_sys->context.i_mdatbytesleft = p_fragment->i_chunk_range_max_offset - i64;
1251
1252     mtime_t i_time_base = 0;
1253     for( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1254     {
1255         mtime_t i_tracktime = LeafGetTrackFragmentTimeOffset( p_demux, p_fragment,
1256                                 p_sys->track[i_track].i_track_ID );
1257         p_sys->track[i_track].i_time = i_tracktime *  p_sys->track[i_track].i_timescale / p_sys->i_timescale;
1258         i_time_base = __MIN( i_time_base, i_tracktime );
1259     }
1260     p_sys->i_time = i_time_base;
1261     p_sys->i_pcr  = VLC_TS_INVALID;
1262
1263     return VLC_SUCCESS;
1264 }
1265
1266 static int LeafSeekToTime( demux_t *p_demux, mtime_t i_nztime )
1267 {
1268     demux_sys_t *p_sys = p_demux->p_sys;
1269     mp4_fragment_t *p_fragment;
1270     uint64_t i64 = 0;
1271     if ( !p_sys->i_timescale || !p_sys->i_overall_duration || !p_sys->b_seekable )
1272          return VLC_EGENERIC;
1273
1274     if ( !p_sys->b_fragments_probed && !p_sys->b_index_probed && p_sys->b_seekable )
1275     {
1276         ProbeIndex( p_demux );
1277         p_sys->b_index_probed = true;
1278     }
1279
1280     p_fragment = GetFragmentByTime( p_demux, i_nztime );
1281     if ( !p_fragment )
1282     {
1283         mtime_t i_mooftime;
1284         msg_Dbg( p_demux, "seek can't find matching fragment for %"PRId64", trying index", i_nztime );
1285         if ( LeafIndexGetMoofPosByTime( p_demux, i_nztime, &i64, &i_mooftime ) == VLC_SUCCESS )
1286         {
1287             msg_Dbg( p_demux, "seek trying to go to unknown but indexed fragment at %"PRId64, i64 );
1288             if( stream_Seek( p_demux->s, i64 ) )
1289             {
1290                 msg_Err( p_demux, "seek to moof failed %"PRId64, i64 );
1291                 return VLC_EGENERIC;
1292             }
1293             p_sys->context.i_current_box_type = 0;
1294             p_sys->context.i_mdatbytesleft = 0;
1295             p_sys->context.p_fragment = NULL;
1296             for( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1297             {
1298                 p_sys->track[i_track].i_time = i_mooftime / CLOCK_FREQ * p_sys->track[i_track].i_timescale;
1299             }
1300             p_sys->i_time = i_mooftime / CLOCK_FREQ * p_sys->i_timescale;
1301             p_sys->i_pcr  = VLC_TS_INVALID;
1302         }
1303         else
1304         {
1305             msg_Warn( p_demux, "seek by index failed" );
1306             return VLC_EGENERIC;
1307         }
1308     }
1309     else
1310     {
1311         msg_Dbg( p_demux, "seeking to fragment data starting at %"PRIu64" for time %"PRId64,
1312                            p_fragment->i_chunk_range_min_offset, i_nztime );
1313         if ( LeafSeekIntoFragment( p_demux, p_fragment ) != VLC_SUCCESS )
1314             return VLC_EGENERIC;
1315     }
1316
1317     MP4ASF_ResetFrames( p_sys );
1318     /* And set next display time in that trun/fragment */
1319     es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, VLC_TS_0 + i_nztime );
1320     return VLC_SUCCESS;
1321 }
1322
1323 static int LeafSeekToPos( demux_t *p_demux, double f )
1324 {
1325     demux_sys_t *p_sys = p_demux->p_sys;
1326     if ( !p_sys->b_seekable )
1327         return VLC_EGENERIC;
1328
1329     if ( p_sys->i_timescale && p_sys->i_overall_duration )
1330     {
1331         return LeafSeekToTime( p_demux,
1332                     (mtime_t)( f * CLOCK_FREQ * p_sys->i_overall_duration /
1333                                p_sys->i_timescale ) );
1334     }
1335
1336     if ( !p_sys->b_fragments_probed && !p_sys->b_index_probed && p_sys->b_seekable )
1337     {
1338         ProbeIndex( p_demux );
1339         p_sys->b_index_probed = true;
1340     }
1341
1342     /* Blind seek to pos only */
1343     uint64_t i64 = (uint64_t) stream_Size( p_demux->s ) * f;
1344     mp4_fragment_t *p_fragment = GetFragmentByPos( p_demux, i64, false );
1345     if ( p_fragment )
1346     {
1347         msg_Dbg( p_demux, "Seeking to fragment data starting at %"PRIu64" for pos %"PRIu64,
1348                  p_fragment->i_chunk_range_min_offset, i64 );
1349         return LeafSeekIntoFragment( p_demux, p_fragment );
1350     }
1351     else
1352     {
1353         msg_Dbg( p_demux, "Cant get fragment for data starting at %"PRIu64, i64 );
1354         return VLC_EGENERIC;
1355     }
1356 }
1357
1358 static int MP4_frg_Seek( demux_t *p_demux, double f )
1359 {
1360     demux_sys_t *p_sys = p_demux->p_sys;
1361
1362     int64_t i64 = stream_Size( p_demux->s );
1363     if( stream_Seek( p_demux->s, (int64_t)(i64 * f) ) )
1364     {
1365         return VLC_EGENERIC;
1366     }
1367     else
1368     {
1369         /* update global time */
1370         p_sys->i_time = (uint64_t)(f * (double)p_sys->i_overall_duration);
1371         p_sys->i_pcr  = MP4_GetMoviePTS( p_sys );
1372
1373         for( unsigned i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1374         {
1375             mp4_track_t *tk = &p_sys->track[i_track];
1376
1377             /* We don't want the current chunk to be flushed */
1378             tk->cchunk->i_sample = tk->cchunk->i_sample_count;
1379
1380             /* reset/update some values */
1381             tk->i_sample = tk->i_sample_first = 0;
1382             tk->i_first_dts = p_sys->i_time;
1383
1384             /* We want to discard the current chunk and get the next one at once */
1385             tk->b_has_non_empty_cchunk = false;
1386         }
1387         es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, p_sys->i_pcr );
1388         return VLC_SUCCESS;
1389     }
1390 }
1391
1392 static bool imageTypeCompatible( const MP4_Box_data_data_t *p_data )
1393 {
1394     return p_data && (
1395     p_data->e_wellknowntype == DATA_WKT_PNG ||
1396     p_data->e_wellknowntype == DATA_WKT_JPEG ||
1397     p_data->e_wellknowntype == DATA_WKT_BMP );
1398 }
1399
1400 /*****************************************************************************
1401  * Control:
1402  *****************************************************************************/
1403 static int Control( demux_t *p_demux, int i_query, va_list args )
1404 {
1405     demux_sys_t *p_sys = p_demux->p_sys;
1406
1407     double f, *pf;
1408     int64_t i64, *pi64;
1409
1410     const char *psz_roots[] = { "/moov/udta/meta/ilst",
1411                                 "/moov/meta/ilst",
1412                                 "/moov/udta/meta",
1413                                 "/moov/udta",
1414                                 "/meta/ilst",
1415                                 "/udta",
1416                                 NULL };
1417     const uint32_t rgi_pict_atoms[2] = { ATOM_PICT, ATOM_pict };
1418
1419     switch( i_query )
1420     {
1421         case DEMUX_GET_POSITION:
1422             pf = (double*)va_arg( args, double * );
1423             if( p_sys->i_overall_duration > 0 )
1424             {
1425                 *pf = (double)p_sys->i_time / (double)p_sys->i_overall_duration;
1426             }
1427             else
1428             {
1429                 *pf = 0.0;
1430             }
1431             return VLC_SUCCESS;
1432
1433         case DEMUX_SET_POSITION:
1434             f = (double)va_arg( args, double );
1435             if ( p_demux->pf_demux == DemuxAsLeaf )
1436                 return LeafSeekToPos( p_demux, f );
1437             else if ( p_demux->pf_demux == DemuxFrg )
1438                 return MP4_frg_Seek( p_demux, f );
1439             else if( p_sys->i_timescale > 0 )
1440             {
1441                 i64 = (int64_t)( f * CLOCK_FREQ *
1442                                  (double)p_sys->i_overall_duration /
1443                                  (double)p_sys->i_timescale );
1444                 return Seek( p_demux, i64 );
1445             }
1446             else return VLC_EGENERIC;
1447
1448         case DEMUX_GET_TIME:
1449             pi64 = (int64_t*)va_arg( args, int64_t * );
1450             if( p_sys->i_timescale > 0 )
1451             {
1452                 *pi64 = CLOCK_FREQ *
1453                         (mtime_t)p_sys->i_time /
1454                         (mtime_t)p_sys->i_timescale;
1455             }
1456             else *pi64 = 0;
1457             return VLC_SUCCESS;
1458
1459         case DEMUX_SET_TIME:
1460             i64 = (int64_t)va_arg( args, int64_t );
1461             if ( p_demux->pf_demux == DemuxAsLeaf )
1462                 return LeafSeekToTime( p_demux, i64 );
1463             else
1464                 return Seek( p_demux, i64 );
1465
1466         case DEMUX_GET_LENGTH:
1467             pi64 = (int64_t*)va_arg( args, int64_t * );
1468             if( p_sys->i_timescale > 0 )
1469             {
1470                 *pi64 = CLOCK_FREQ *
1471                         (mtime_t)p_sys->i_overall_duration /
1472                         (mtime_t)p_sys->i_timescale;
1473             }
1474             else *pi64 = 0;
1475             return VLC_SUCCESS;
1476
1477         case DEMUX_GET_FPS:
1478             pf = (double*)va_arg( args, double* );
1479             *pf = p_sys->f_fps;
1480             return VLC_SUCCESS;
1481
1482         case DEMUX_GET_ATTACHMENTS:
1483         {
1484             input_attachment_t ***ppp_attach = va_arg( args, input_attachment_t*** );
1485             int *pi_int = va_arg( args, int * );
1486
1487             MP4_Box_t *p_udta = NULL;
1488             size_t i_count = 0;
1489             int i_index = 0;
1490
1491             /* Count number of total attachments */
1492             for( ; psz_roots[i_index] && !p_udta; i_index++ )
1493             {
1494                 p_udta = MP4_BoxGet( p_sys->p_root, psz_roots[i_index] );
1495                 if ( p_udta )
1496                     i_count += MP4_BoxCount( p_udta, "covr/data" );
1497             }
1498
1499             for ( size_t i=0; i< ARRAY_SIZE(rgi_pict_atoms); i++ )
1500             {
1501                 char rgsz_path[5];
1502                 snprintf( rgsz_path, 5, "%4.4s", (char*)&rgi_pict_atoms[i] );
1503                 i_count += MP4_BoxCount( p_sys->p_root, rgsz_path );
1504             }
1505
1506             if ( i_count == 0 )
1507                 return VLC_EGENERIC;
1508
1509             *ppp_attach = (input_attachment_t**)
1510                     malloc( sizeof(input_attachment_t*) * i_count );
1511             if( !(*ppp_attach) ) return VLC_ENOMEM;
1512
1513             /* First add cover attachments */
1514             i_count = 0;
1515             size_t i_box_count = 0;
1516             if ( p_udta )
1517             {
1518                 const MP4_Box_t *p_data = MP4_BoxGet( p_udta, "covr/data" );
1519                 for( ; p_data; p_data = p_data->p_next )
1520                 {
1521                     char *psz_mime;
1522                     char *psz_filename;
1523                     i_box_count++;
1524
1525                     if ( p_data->i_type != ATOM_data || !imageTypeCompatible( BOXDATA(p_data) ) )
1526                         continue;
1527
1528                     switch( BOXDATA(p_data)->e_wellknowntype )
1529                     {
1530                     case DATA_WKT_PNG:
1531                         psz_mime = strdup( "image/png" );
1532                         break;
1533                     case DATA_WKT_JPEG:
1534                         psz_mime = strdup( "image/jpeg" );
1535                         break;
1536                     case DATA_WKT_BMP:
1537                         psz_mime = strdup( "image/bmp" );
1538                         break;
1539                     default:
1540                         continue;
1541                     }
1542
1543                     if ( asprintf( &psz_filename, "%s/covr/data[%"PRIu64"]", psz_roots[i_index - 1],
1544                                    i_box_count - 1 ) >= 0 )
1545                     {
1546                         (*ppp_attach)[i_count++] =
1547                             vlc_input_attachment_New( psz_filename, psz_mime, "Cover picture",
1548                                 BOXDATA(p_data)->p_blob, BOXDATA(p_data)->i_blob );
1549                         msg_Dbg( p_demux, "adding attachment %s", psz_filename );
1550                         free( psz_filename );
1551                     }
1552
1553                     free( psz_mime );
1554                 }
1555             }
1556
1557             /* Then quickdraw pict ones */
1558             for ( size_t i=0; i< ARRAY_SIZE(rgi_pict_atoms); i++ )
1559             {
1560                 char rgsz_path[5];
1561                 snprintf( rgsz_path, 5, "%4.4s", (char*)&rgi_pict_atoms[i] );
1562                 const MP4_Box_t *p_pict = MP4_BoxGet( p_sys->p_root, rgsz_path );
1563                 i_box_count = 0;
1564                 for( ; p_pict; p_pict = p_pict->p_next )
1565                 {
1566                     if ( i_box_count++ == UINT16_MAX ) /* pnot only handles 2^16 */
1567                         break;
1568                     if ( p_pict->i_type != rgi_pict_atoms[i] )
1569                         continue;
1570                     char rgsz_location[12];
1571                     snprintf( rgsz_location, 12, "%4.4s[%"PRIu16"]", (char*)&rgi_pict_atoms[i],
1572                               (uint16_t) i_box_count - 1 );
1573                     (*ppp_attach)[i_count++] = vlc_input_attachment_New( rgsz_location, "image/x-pict",
1574                         "Quickdraw image", p_pict->data.p_binary->p_blob, p_pict->data.p_binary->i_blob );
1575                     msg_Dbg( p_demux, "adding attachment %s", rgsz_location );
1576                 }
1577             }
1578
1579             if ( i_count == 0 )
1580             {
1581                 free( *ppp_attach );
1582                 return VLC_EGENERIC;
1583             }
1584
1585             *pi_int = i_count;
1586
1587             return VLC_SUCCESS;
1588         }
1589
1590         case DEMUX_GET_META:
1591         {
1592             vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
1593
1594             MP4_Box_t *p_data = NULL;
1595             MP4_Box_t *p_udta = NULL;
1596             bool b_attachment_set = false;
1597
1598             for( int i_index = 0; psz_roots[i_index] && !p_udta; i_index++ )
1599             {
1600                 p_udta = MP4_BoxGet( p_sys->p_root, psz_roots[i_index] );
1601                 if ( p_udta )
1602                 {
1603                     p_data = MP4_BoxGet( p_udta, "covr/data" );
1604                     if ( p_data && imageTypeCompatible( BOXDATA(p_data) ) )
1605                     {
1606                         char *psz_attachment;
1607                         if ( -1 != asprintf( &psz_attachment, "attachment://%s/covr/data[0]",
1608                                              psz_roots[i_index] ) )
1609                         {
1610                             vlc_meta_SetArtURL( p_meta, psz_attachment );
1611                             b_attachment_set = true;
1612                             free( psz_attachment );
1613                         }
1614                     }
1615                 }
1616             }
1617
1618             const MP4_Box_t *p_pnot;
1619             if ( !b_attachment_set && (p_pnot = MP4_BoxGet( p_sys->p_root, "pnot" )) )
1620             {
1621                 for ( size_t i=0; i< ARRAY_SIZE(rgi_pict_atoms) && !b_attachment_set; i++ )
1622                 {
1623                     if ( rgi_pict_atoms[i] == BOXDATA(p_pnot)->i_type )
1624                     {
1625                         char rgsz_path[26];
1626                         snprintf( rgsz_path, 26, "attachment://%4.4s[%"PRIu16"]",
1627                                   (char*)&rgi_pict_atoms[i], BOXDATA(p_pnot)->i_index - 1 );
1628                         vlc_meta_SetArtURL( p_meta, rgsz_path );
1629                         b_attachment_set = true;
1630                     }
1631                 }
1632             }
1633
1634             if( p_udta == NULL && !b_attachment_set )
1635                 return VLC_EGENERIC;
1636
1637             SetupMeta( p_meta, p_udta );
1638
1639             return VLC_SUCCESS;
1640         }
1641
1642         case DEMUX_GET_TITLE_INFO:
1643         {
1644             input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
1645             int *pi_int    = (int*)va_arg( args, int* );
1646             int *pi_title_offset = (int*)va_arg( args, int* );
1647             int *pi_seekpoint_offset = (int*)va_arg( args, int* );
1648
1649             if( !p_sys->p_title )
1650                 return VLC_EGENERIC;
1651
1652             *pi_int = 1;
1653             *ppp_title = malloc( sizeof( input_title_t*) );
1654             (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
1655             *pi_title_offset = 0;
1656             *pi_seekpoint_offset = 0;
1657             return VLC_SUCCESS;
1658         }
1659         case DEMUX_SET_TITLE:
1660         {
1661             const int i_title = (int)va_arg( args, int );
1662             if( !p_sys->p_title || i_title != 0 )
1663                 return VLC_EGENERIC;
1664             return VLC_SUCCESS;
1665         }
1666         case DEMUX_SET_SEEKPOINT:
1667         {
1668             const int i_seekpoint = (int)va_arg( args, int );
1669             if( !p_sys->p_title )
1670                 return VLC_EGENERIC;
1671             return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
1672         }
1673         case DEMUX_GET_PTS_DELAY:
1674         {
1675             for( unsigned int i = 0; i < p_sys->i_tracks; i++ )
1676             {
1677                 const MP4_Box_t *p_load;
1678                 if ( (p_load = MP4_BoxGet( p_sys->track[i].p_track, "load" )) &&
1679                      BOXDATA(p_load)->i_duration > 0 )
1680                 {
1681                     *va_arg(args, int64_t *) = BOXDATA(p_load)->i_duration *
1682                             CLOCK_FREQ / p_sys->track[i].i_timescale;
1683                     return VLC_SUCCESS;
1684                 }
1685             }
1686             return VLC_EGENERIC;
1687         }
1688         case DEMUX_SET_NEXT_DEMUX_TIME:
1689         case DEMUX_SET_GROUP:
1690         case DEMUX_HAS_UNSUPPORTED_META:
1691         case DEMUX_CAN_RECORD:
1692             return VLC_EGENERIC;
1693
1694         default:
1695             msg_Warn( p_demux, "control query %u unimplemented", i_query );
1696             return VLC_EGENERIC;
1697     }
1698 }
1699
1700 /*****************************************************************************
1701  * Close: frees unused data
1702  *****************************************************************************/
1703 static void Close ( vlc_object_t * p_this )
1704 {
1705     demux_t *  p_demux = (demux_t *)p_this;
1706     demux_sys_t *p_sys = p_demux->p_sys;
1707     unsigned int i_track;
1708
1709     msg_Dbg( p_demux, "freeing all memory" );
1710
1711     MP4_BoxFree( p_demux->s, p_sys->p_root );
1712     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1713     {
1714         MP4_TrackDestroy(  &p_sys->track[i_track] );
1715     }
1716     FREENULL( p_sys->track );
1717
1718     if( p_sys->p_title )
1719         vlc_input_title_Delete( p_sys->p_title );
1720
1721     while( p_sys->moovfragment.p_next )
1722     {
1723         mp4_fragment_t *p_fragment = p_sys->moovfragment.p_next->p_next;
1724         free( p_sys->moovfragment.p_next->p_durations );
1725         free( p_sys->moovfragment.p_next );
1726         p_sys->moovfragment.p_next = p_fragment;
1727     }
1728     free( p_sys->moovfragment.p_durations );
1729
1730     free( p_sys );
1731 }
1732
1733
1734
1735 /****************************************************************************
1736  * Local functions, specific to vlc
1737  ****************************************************************************/
1738 /* Chapters */
1739 static void LoadChapterGpac( demux_t  *p_demux, MP4_Box_t *p_chpl )
1740 {
1741     demux_sys_t *p_sys = p_demux->p_sys;
1742     int i;
1743
1744     p_sys->p_title = vlc_input_title_New();
1745     for( i = 0; i < BOXDATA(p_chpl)->i_chapter; i++ )
1746     {
1747         seekpoint_t *s = vlc_seekpoint_New();
1748
1749         s->psz_name = strdup( BOXDATA(p_chpl)->chapter[i].psz_name );
1750         EnsureUTF8( s->psz_name );
1751         s->i_time_offset = BOXDATA(p_chpl)->chapter[i].i_start / 10;
1752         TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1753     }
1754 }
1755 static void LoadChapterApple( demux_t  *p_demux, mp4_track_t *tk )
1756 {
1757     demux_sys_t *p_sys = p_demux->p_sys;
1758
1759     for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1760     {
1761         const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1762         int64_t i_pts_delta;
1763         if ( !MP4_TrackGetPTSDelta( p_demux, tk, &i_pts_delta ) )
1764             i_pts_delta = 0;
1765         uint32_t i_nb_samples = 0;
1766         const uint32_t i_size = MP4_TrackGetReadSize( tk, &i_nb_samples );
1767
1768         if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1769         {
1770             char p_buffer[256];
1771             const uint32_t i_read = stream_ReadU32( p_demux->s, p_buffer,
1772                                                     __MIN( sizeof(p_buffer), i_size ) );
1773             const uint32_t i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1774
1775             if( i_len > 0 )
1776             {
1777                 seekpoint_t *s = vlc_seekpoint_New();
1778
1779                 s->psz_name = strndup( &p_buffer[2], i_len );
1780                 EnsureUTF8( s->psz_name );
1781
1782                 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1783
1784                 if( !p_sys->p_title )
1785                     p_sys->p_title = vlc_input_title_New();
1786                 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1787             }
1788         }
1789         if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1790                               tk->chunk[tk->i_chunk].i_sample_count )
1791             tk->i_chunk++;
1792     }
1793 }
1794 static void LoadChapter( demux_t  *p_demux )
1795 {
1796     demux_sys_t *p_sys = p_demux->p_sys;
1797     MP4_Box_t *p_chpl;
1798
1799     if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) &&
1800           BOXDATA(p_chpl) && BOXDATA(p_chpl)->i_chapter > 0 )
1801     {
1802         LoadChapterGpac( p_demux, p_chpl );
1803     }
1804     else if( p_sys->p_tref_chap )
1805     {
1806         MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1807         unsigned int i, j;
1808
1809         /* Load the first subtitle track like quicktime */
1810         for( i = 0; i < p_chap->i_entry_count; i++ )
1811         {
1812             for( j = 0; j < p_sys->i_tracks; j++ )
1813             {
1814                 mp4_track_t *tk = &p_sys->track[j];
1815                 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1816                     tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_CODEC_TX3G )
1817                     break;
1818             }
1819             if( j < p_sys->i_tracks )
1820             {
1821                 LoadChapterApple( p_demux, &p_sys->track[j] );
1822                 break;
1823             }
1824         }
1825     }
1826
1827     /* Add duration if titles are enabled */
1828     if( p_sys->p_title )
1829     {
1830         p_sys->p_title->i_length = CLOCK_FREQ *
1831                        (uint64_t)p_sys->i_overall_duration / (uint64_t)p_sys->i_timescale;
1832     }
1833 }
1834
1835 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1836 static int TrackCreateChunksIndex( demux_t *p_demux,
1837                                    mp4_track_t *p_demux_track )
1838 {
1839     demux_sys_t *p_sys = p_demux->p_sys;
1840
1841     MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1842     MP4_Box_t *p_stsc;
1843
1844     unsigned int i_chunk;
1845     unsigned int i_index, i_last;
1846
1847     if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1848           !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1849         ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1850     {
1851         return( VLC_EGENERIC );
1852     }
1853
1854     p_demux_track->i_chunk_count = BOXDATA(p_co64)->i_entry_count;
1855     if( !p_demux_track->i_chunk_count )
1856     {
1857         msg_Warn( p_demux, "no chunk defined" );
1858     }
1859     p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1860                                    sizeof( mp4_chunk_t ) );
1861     if( p_demux_track->chunk == NULL )
1862     {
1863         return VLC_ENOMEM;
1864     }
1865
1866     /* first we read chunk offset */
1867     for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1868     {
1869         mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1870
1871         ck->i_offset = BOXDATA(p_co64)->i_chunk_offset[i_chunk];
1872
1873         ck->i_first_dts = 0;
1874         ck->p_sample_count_dts = NULL;
1875         ck->p_sample_delta_dts = NULL;
1876         ck->p_sample_count_pts = NULL;
1877         ck->p_sample_offset_pts = NULL;
1878     }
1879
1880     /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1881         to be used for the sample XXX begin to 1
1882         We construct it begining at the end */
1883     i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1884     i_index = BOXDATA(p_stsc)->i_entry_count;
1885
1886     while( i_index-- > 0 )
1887     {
1888         for( i_chunk = BOXDATA(p_stsc)->i_first_chunk[i_index] - 1;
1889              i_chunk < i_last; i_chunk++ )
1890         {
1891             if( i_chunk >= p_demux_track->i_chunk_count )
1892             {
1893                 msg_Warn( p_demux, "corrupted chunk table" );
1894                 return VLC_EGENERIC;
1895             }
1896
1897             p_demux_track->chunk[i_chunk].i_sample_description_index =
1898                     BOXDATA(p_stsc)->i_sample_description_index[i_index];
1899             p_demux_track->chunk[i_chunk].i_sample_count =
1900                     BOXDATA(p_stsc)->i_samples_per_chunk[i_index];
1901         }
1902         i_last = BOXDATA(p_stsc)->i_first_chunk[i_index] - 1;
1903     }
1904
1905     if ( p_demux_track->i_chunk_count )
1906     {
1907         p_demux_track->chunk[0].i_sample_first = 0;
1908         for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1909         {
1910             p_demux_track->chunk[i_chunk].i_sample_first =
1911                 p_demux_track->chunk[i_chunk-1].i_sample_first +
1912                     p_demux_track->chunk[i_chunk-1].i_sample_count;
1913         }
1914     }
1915
1916     msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1917              p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1918
1919     if ( p_demux_track->i_chunk_count && (
1920              p_sys->moovfragment.i_chunk_range_min_offset == 0 ||
1921              p_sys->moovfragment.i_chunk_range_min_offset > p_demux_track->chunk[0].i_offset
1922              ) )
1923         p_sys->moovfragment.i_chunk_range_min_offset = p_demux_track->chunk[0].i_offset;
1924
1925     return VLC_SUCCESS;
1926 }
1927
1928 static int xTTS_CountEntries( demux_t *p_demux, uint32_t *pi_entry /* out */,
1929                               const uint32_t i_index,
1930                               uint32_t i_index_samples_left,
1931                               uint32_t i_sample_count,
1932                               const uint32_t *pi_index_sample_count,
1933                               const uint32_t i_table_count )
1934 {
1935     uint32_t i_array_offset;
1936     while( i_sample_count > 0 )
1937     {
1938         if ( likely((UINT32_MAX - i_index) >= *pi_entry) )
1939             i_array_offset = i_index + *pi_entry;
1940         else
1941             return VLC_EGENERIC;
1942
1943         if ( i_array_offset >= i_table_count )
1944         {
1945             msg_Err( p_demux, "invalid index counting total samples %u %u", i_array_offset,  i_table_count );
1946             return VLC_EGENERIC;
1947         }
1948
1949         if ( i_index_samples_left )
1950         {
1951             if ( i_index_samples_left > i_sample_count )
1952             {
1953                 i_index_samples_left -= i_sample_count;
1954                 i_sample_count = 0;
1955                 *pi_entry +=1; /* No samples left, go copy */
1956                 break;
1957             }
1958             else
1959             {
1960                 i_sample_count -= i_index_samples_left;
1961                 i_index_samples_left = 0;
1962                 *pi_entry += 1;
1963                 continue;
1964             }
1965         }
1966         else
1967         {
1968             i_sample_count -= __MIN( i_sample_count, pi_index_sample_count[i_array_offset] );
1969             *pi_entry += 1;
1970         }
1971     }
1972
1973     return VLC_SUCCESS;
1974 }
1975
1976 static int TrackCreateSamplesIndex( demux_t *p_demux,
1977                                     mp4_track_t *p_demux_track )
1978 {
1979     demux_sys_t *p_sys = p_demux->p_sys;
1980
1981     MP4_Box_t *p_box;
1982     MP4_Box_data_stsz_t *stsz;
1983     /* TODO use also stss and stsh table for seeking */
1984     /* FIXME use edit table */
1985
1986     /* Find stsz
1987      *  Gives the sample size for each samples. There is also a stz2 table
1988      *  (compressed form) that we need to implement TODO */
1989     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1990     if( !p_box )
1991     {
1992         /* FIXME and stz2 */
1993         msg_Warn( p_demux, "cannot find STSZ box" );
1994         return VLC_EGENERIC;
1995     }
1996     stsz = p_box->data.p_stsz;
1997
1998     /* Use stsz table to create a sample number -> sample size table */
1999     p_demux_track->i_sample_count = stsz->i_sample_count;
2000     if( stsz->i_sample_size )
2001     {
2002         /* 1: all sample have the same size, so no need to construct a table */
2003         p_demux_track->i_sample_size = stsz->i_sample_size;
2004         p_demux_track->p_sample_size = NULL;
2005     }
2006     else
2007     {
2008         /* 2: each sample can have a different size */
2009         p_demux_track->i_sample_size = 0;
2010         p_demux_track->p_sample_size =
2011             calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
2012         if( p_demux_track->p_sample_size == NULL )
2013             return VLC_ENOMEM;
2014
2015         for( uint32_t i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
2016         {
2017             p_demux_track->p_sample_size[i_sample] =
2018                     stsz->i_entry_size[i_sample];
2019         }
2020     }
2021
2022     if ( p_demux_track->i_chunk_count )
2023     {
2024         mp4_chunk_t *lastchunk = &p_demux_track->chunk[p_demux_track->i_chunk_count - 1];
2025         uint64_t i_total_size = lastchunk->i_offset;
2026
2027         if ( p_demux_track->i_sample_size != 0 ) /* all samples have same size */
2028         {
2029             i_total_size += (uint64_t)p_demux_track->i_sample_size * lastchunk->i_sample_count;
2030         }
2031         else
2032         {
2033             if( (uint64_t)lastchunk->i_sample_count + p_demux_track->i_chunk_count - 1 > stsz->i_sample_count )
2034             {
2035                 msg_Err( p_demux, "invalid samples table: stsz table is too small" );
2036                 return VLC_EGENERIC;
2037             }
2038
2039             for( uint32_t i=stsz->i_sample_count - lastchunk->i_sample_count;
2040                  i<stsz->i_sample_count; i++)
2041             {
2042                 i_total_size += stsz->i_entry_size[i];
2043             }
2044         }
2045
2046         if ( i_total_size > p_sys->moovfragment.i_chunk_range_max_offset )
2047             p_sys->moovfragment.i_chunk_range_max_offset = i_total_size;
2048     }
2049
2050     /* Use stts table to create a sample number -> dts table.
2051      * XXX: if we don't want to waste too much memory, we can't expand
2052      *  the box! so each chunk will contain an "extract" of this table
2053      *  for fast research (problem with raw stream where a sample is sometime
2054      *  just channels*bits_per_sample/8 */
2055
2056      /* FIXME: refactor STTS & CTTS, STTS having now only few extra lines and
2057       *        differing in 2/2 fields and 1 signedness */
2058
2059     mtime_t i_next_dts = 0;
2060     /* Find stts
2061      *  Gives mapping between sample and decoding time
2062      */
2063     p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
2064     if( !p_box )
2065     {
2066         msg_Warn( p_demux, "cannot find STTS box" );
2067         return VLC_EGENERIC;
2068     }
2069     else
2070     {
2071         MP4_Box_data_stts_t *stts = p_box->data.p_stts;
2072
2073         msg_Warn( p_demux, "STTS table of %"PRIu32" entries", stts->i_entry_count );
2074
2075         /* Create sample -> dts table per chunk */
2076         uint32_t i_index = 0;
2077         uint32_t i_current_index_samples_left = 0;
2078
2079         for( uint32_t i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
2080         {
2081             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
2082             uint32_t i_entry, i_sample_count;
2083
2084             /* save first dts */
2085             ck->i_first_dts = i_next_dts;
2086             ck->i_last_dts  = i_next_dts;
2087
2088             /* count how many entries are needed for this chunk
2089              * for p_sample_delta_dts and p_sample_count_dts */
2090             i_entry = 0;
2091
2092             int i_ret = xTTS_CountEntries( p_demux, &i_entry, i_index,
2093                                            i_current_index_samples_left,
2094                                            ck->i_sample_count,
2095                                            stts->pi_sample_count,
2096                                            stts->i_entry_count );
2097             if ( i_ret != VLC_SUCCESS )
2098                 return i_ret;
2099
2100             /* allocate them */
2101             ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
2102             ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
2103             if( !ck->p_sample_count_dts || !ck->p_sample_delta_dts )
2104             {
2105                 free( ck->p_sample_count_dts );
2106                 free( ck->p_sample_delta_dts );
2107                 msg_Err( p_demux, "can't allocate memory for i_entry=%"PRIu32, i_entry );
2108                 return VLC_ENOMEM;
2109             }
2110
2111             /* now copy */
2112             i_sample_count = ck->i_sample_count;
2113
2114             for( uint32_t i = 0; i < i_entry; i++ )
2115             {
2116                 if ( i_current_index_samples_left )
2117                 {
2118                     if ( i_current_index_samples_left > i_sample_count )
2119                     {
2120                         if ( i_sample_count ) ck->i_last_dts = i_next_dts;
2121                         ck->p_sample_count_dts[i] = i_sample_count;
2122                         ck->p_sample_delta_dts[i] = stts->pi_sample_delta[i_index];
2123                         i_next_dts += ck->p_sample_count_dts[i] * stts->pi_sample_delta[i_index];
2124                         i_current_index_samples_left -= i_sample_count;
2125                         i_sample_count = 0;
2126                         assert( i == i_entry - 1 );
2127                         break;
2128                     }
2129                     else
2130                     {
2131                         if ( i_current_index_samples_left ) ck->i_last_dts = i_next_dts;
2132                         ck->p_sample_count_dts[i] = i_current_index_samples_left;
2133                         ck->p_sample_delta_dts[i] = stts->pi_sample_delta[i_index];
2134                         i_next_dts += ck->p_sample_count_dts[i] * stts->pi_sample_delta[i_index];
2135                         i_sample_count -= i_current_index_samples_left;
2136                         i_current_index_samples_left = 0;
2137                         i_index++;
2138                     }
2139                 }
2140                 else
2141                 {
2142                     if ( stts->pi_sample_count[i_index] > i_sample_count )
2143                     {
2144                         if ( i_sample_count ) ck->i_last_dts = i_next_dts;
2145                         ck->p_sample_count_dts[i] = i_sample_count;
2146                         ck->p_sample_delta_dts[i] = stts->pi_sample_delta[i_index];
2147                         i_next_dts += ck->p_sample_count_dts[i] * stts->pi_sample_delta[i_index];
2148                         i_current_index_samples_left = stts->pi_sample_count[i_index] - i_sample_count;
2149                         i_sample_count = 0;
2150                         assert( i == i_entry - 1 );
2151                         // keep building from same index
2152                     }
2153                     else
2154                     {
2155                         if ( stts->pi_sample_count[i_index] ) ck->i_last_dts = i_next_dts;
2156                         ck->p_sample_count_dts[i] = stts->pi_sample_count[i_index];
2157                         ck->p_sample_delta_dts[i] = stts->pi_sample_delta[i_index];
2158                         i_next_dts += ck->p_sample_count_dts[i] * stts->pi_sample_delta[i_index];
2159                         i_sample_count -= stts->pi_sample_count[i_index];
2160                         i_index++;
2161                     }
2162                 }
2163
2164             }
2165         }
2166     }
2167
2168
2169     /* Find ctts
2170      *  Gives the delta between decoding time (dts) and composition table (pts)
2171      */
2172     p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
2173     if( p_box && p_box->data.p_ctts )
2174     {
2175         MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
2176
2177         msg_Warn( p_demux, "CTTS table of %"PRIu32" entries", ctts->i_entry_count );
2178
2179         /* Create pts-dts table per chunk */
2180         uint32_t i_index = 0;
2181         uint32_t i_current_index_samples_left = 0;
2182
2183         for( uint32_t i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
2184         {
2185             mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
2186             uint32_t i_entry, i_sample_count;
2187
2188             /* count how many entries are needed for this chunk
2189              * for p_sample_offset_pts and p_sample_count_pts */
2190             i_entry = 0;
2191             int i_ret = xTTS_CountEntries( p_demux, &i_entry, i_index,
2192                                            i_current_index_samples_left,
2193                                            ck->i_sample_count,
2194                                            ctts->pi_sample_count,
2195                                            ctts->i_entry_count );
2196             if ( i_ret != VLC_SUCCESS )
2197                 return i_ret;
2198
2199             /* allocate them */
2200             ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
2201             ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
2202             if( !ck->p_sample_count_pts || !ck->p_sample_offset_pts )
2203             {
2204                 free( ck->p_sample_count_pts );
2205                 free( ck->p_sample_offset_pts );
2206                 msg_Err( p_demux, "can't allocate memory for i_entry=%"PRIu32, i_entry );
2207                 return VLC_ENOMEM;
2208             }
2209
2210             /* now copy */
2211             i_sample_count = ck->i_sample_count;
2212
2213             for( uint32_t i = 0; i < i_entry; i++ )
2214             {
2215                 if ( i_current_index_samples_left )
2216                 {
2217                     if ( i_current_index_samples_left > i_sample_count )
2218                     {
2219                         ck->p_sample_count_pts[i] = i_sample_count;
2220                         ck->p_sample_offset_pts[i] = ctts->pi_sample_offset[i_index];
2221                         i_current_index_samples_left -= i_sample_count;
2222                         i_sample_count = 0;
2223                         assert( i == i_entry - 1 );
2224                         break;
2225                     }
2226                     else
2227                     {
2228                         ck->p_sample_count_pts[i] = i_current_index_samples_left;
2229                         ck->p_sample_offset_pts[i] = ctts->pi_sample_offset[i_index];
2230                         i_sample_count -= i_current_index_samples_left;
2231                         i_current_index_samples_left = 0;
2232                         i_index++;
2233                     }
2234                 }
2235                 else
2236                 {
2237                     if ( ctts->pi_sample_count[i_index] > i_sample_count )
2238                     {
2239                         ck->p_sample_count_pts[i] = i_sample_count;
2240                         ck->p_sample_offset_pts[i] = ctts->pi_sample_offset[i_index];
2241                         i_current_index_samples_left = ctts->pi_sample_count[i_index] - i_sample_count;
2242                         i_sample_count = 0;
2243                         assert( i == i_entry - 1 );
2244                         // keep building from same index
2245                     }
2246                     else
2247                     {
2248                         ck->p_sample_count_pts[i] = ctts->pi_sample_count[i_index];
2249                         ck->p_sample_offset_pts[i] = ctts->pi_sample_offset[i_index];
2250                         i_sample_count -= ctts->pi_sample_count[i_index];
2251                         i_index++;
2252                     }
2253                 }
2254
2255
2256             }
2257         }
2258     }
2259
2260     msg_Dbg( p_demux, "track[Id 0x%x] read %"PRIu32" samples length:%"PRId64"s",
2261              p_demux_track->i_track_ID, p_demux_track->i_sample_count,
2262              i_next_dts / p_demux_track->i_timescale );
2263
2264     return VLC_SUCCESS;
2265 }
2266
2267
2268 /**
2269  * It computes the sample rate for a video track using the given sample
2270  * description index
2271  */
2272 static void TrackGetESSampleRate( demux_t *p_demux,
2273                                   unsigned *pi_num, unsigned *pi_den,
2274                                   const mp4_track_t *p_track,
2275                                   unsigned i_sd_index,
2276                                   unsigned i_chunk )
2277 {
2278     *pi_num = 0;
2279     *pi_den = 0;
2280
2281     MP4_Box_t *p_trak = MP4_GetTrakByTrackID( MP4_BoxGet( p_demux->p_sys->p_root, "/moov" ),
2282                                               p_track->i_track_ID );
2283     MP4_Box_t *p_mdhd = MP4_BoxGet( p_trak, "mdia/mdhd" );
2284     if ( p_mdhd && BOXDATA(p_mdhd) )
2285     {
2286         vlc_ureduce( pi_num, pi_den,
2287                      (uint64_t) BOXDATA(p_mdhd)->i_timescale * p_track->i_sample_count,
2288                      (uint64_t) BOXDATA(p_mdhd)->i_duration,
2289                      UINT16_MAX );
2290         return;
2291     }
2292
2293     if( p_track->i_chunk_count == 0 )
2294         return;
2295
2296     /* */
2297     const mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
2298     while( p_chunk > &p_track->chunk[0] &&
2299            p_chunk[-1].i_sample_description_index == i_sd_index )
2300     {
2301         p_chunk--;
2302     }
2303
2304     uint64_t i_sample = 0;
2305     uint64_t i_first_dts = p_chunk->i_first_dts;
2306     uint64_t i_last_dts;
2307     do
2308     {
2309         i_sample += p_chunk->i_sample_count;
2310         i_last_dts = p_chunk->i_last_dts;
2311         p_chunk++;
2312     }
2313     while( p_chunk < &p_track->chunk[p_track->i_chunk_count] &&
2314            p_chunk->i_sample_description_index == i_sd_index );
2315
2316     if( i_sample > 1 && i_first_dts < i_last_dts )
2317         vlc_ureduce( pi_num, pi_den,
2318                      ( i_sample - 1) *  p_track->i_timescale,
2319                      i_last_dts - i_first_dts,
2320                      UINT16_MAX);
2321 }
2322
2323 /*
2324  * TrackCreateES:
2325  * Create ES and PES to init decoder if needed, for a track starting at i_chunk
2326  */
2327 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
2328                           unsigned int i_chunk, es_out_id_t **pp_es )
2329 {
2330     demux_sys_t *p_sys = p_demux->p_sys;
2331     unsigned int i_sample_description_index;
2332
2333     if( p_sys->b_fragmented || p_track->i_chunk_count == 0 )
2334         i_sample_description_index = 1; /* XXX */
2335     else
2336         i_sample_description_index =
2337                 p_track->chunk[i_chunk].i_sample_description_index;
2338
2339     if( pp_es )
2340         *pp_es = NULL;
2341
2342     if( !i_sample_description_index )
2343     {
2344         msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
2345                   p_track->i_track_ID );
2346         return VLC_EGENERIC;
2347     }
2348
2349     MP4_Box_t *p_sample = MP4_BoxGet(  p_track->p_stsd, "[%d]",
2350                             i_sample_description_index - 1 );
2351
2352     if( !p_sample ||
2353         ( !p_sample->data.p_payload && p_track->fmt.i_cat != SPU_ES ) )
2354     {
2355         msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
2356                   p_track->i_track_ID );
2357         return VLC_EGENERIC;
2358     }
2359
2360     p_track->p_sample = p_sample;
2361
2362     MP4_Box_t   *p_frma;
2363     if( ( p_frma = MP4_BoxGet( p_track->p_sample, "sinf/frma" ) ) && p_frma->data.p_frma )
2364     {
2365         msg_Warn( p_demux, "Original Format Box: %4.4s", (char *)&p_frma->data.p_frma->i_type );
2366
2367         p_sample->i_type = p_frma->data.p_frma->i_type;
2368     }
2369
2370     /* */
2371     switch( p_track->fmt.i_cat )
2372     {
2373     case VIDEO_ES:
2374         if ( !p_sample->data.p_sample_vide || p_sample->i_handler != ATOM_vide )
2375             break;
2376         SetupVideoES( p_demux, p_track, p_sample );
2377
2378         /* Set frame rate */
2379         TrackGetESSampleRate( p_demux,
2380                               &p_track->fmt.video.i_frame_rate,
2381                               &p_track->fmt.video.i_frame_rate_base,
2382                               p_track, i_sample_description_index, i_chunk );
2383
2384         p_demux->p_sys->f_fps = (float)p_track->fmt.video.i_frame_rate /
2385                                 (float)p_track->fmt.video.i_frame_rate_base;
2386
2387         break;
2388
2389     case AUDIO_ES:
2390         if ( !p_sample->data.p_sample_soun || p_sample->i_handler != ATOM_soun )
2391             break;
2392         SetupAudioES( p_demux, p_track, p_sample );
2393         break;
2394
2395     case SPU_ES:
2396         if ( !p_sample->data.p_sample_text || p_sample->i_handler != ATOM_text )
2397             break;
2398         SetupSpuES( p_demux, p_track, p_sample );
2399
2400     default:
2401         break;
2402     }
2403
2404     if( pp_es )
2405         *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
2406
2407     return VLC_SUCCESS;
2408 }
2409
2410 /* given a time it return sample/chunk
2411  * it also update elst field of the track
2412  */
2413 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
2414                                    int64_t i_start, uint32_t *pi_chunk,
2415                                    uint32_t *pi_sample )
2416 {
2417     demux_sys_t *p_sys = p_demux->p_sys;
2418     MP4_Box_t   *p_box_stss;
2419     uint64_t     i_dts;
2420     unsigned int i_sample;
2421     unsigned int i_chunk;
2422     int          i_index;
2423
2424     /* FIXME see if it's needed to check p_track->i_chunk_count */
2425     if( p_track->i_chunk_count == 0 )
2426         return( VLC_EGENERIC );
2427
2428     /* handle elst (find the correct one) */
2429     MP4_TrackSetELST( p_demux, p_track, i_start );
2430     if( p_track->p_elst && p_track->BOXDATA(p_elst)->i_entry_count > 0 )
2431     {
2432         MP4_Box_data_elst_t *elst = p_track->BOXDATA(p_elst);
2433         int64_t i_mvt= i_start * p_sys->i_timescale / CLOCK_FREQ;
2434
2435         /* now calculate i_start for this elst */
2436         /* offset */
2437         i_start -= p_track->i_elst_time * CLOCK_FREQ / p_sys->i_timescale;
2438         if( i_start < 0 )
2439         {
2440             *pi_chunk = 0;
2441             *pi_sample= 0;
2442
2443             return VLC_SUCCESS;
2444         }
2445         /* to track time scale */
2446         i_start  = i_start * p_track->i_timescale / CLOCK_FREQ;
2447         /* add elst offset */
2448         if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
2449              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
2450             elst->i_media_time[p_track->i_elst] > 0 )
2451         {
2452             i_start += elst->i_media_time[p_track->i_elst];
2453         }
2454
2455         msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
2456                  "ms (track)", p_track->i_elst,
2457                  i_mvt * 1000 / p_sys->i_timescale,
2458                  i_start * 1000 / p_track->i_timescale );
2459     }
2460     else
2461     {
2462         /* convert absolute time to in timescale unit */
2463         i_start = i_start * p_track->i_timescale / CLOCK_FREQ;
2464     }
2465
2466     /* we start from sample 0/chunk 0, hope it won't take too much time */
2467     /* *** find good chunk *** */
2468     for( i_chunk = 0; ; i_chunk++ )
2469     {
2470         if( i_chunk + 1 >= p_track->i_chunk_count )
2471         {
2472             /* at the end and can't check if i_start in this chunk,
2473                it will be check while searching i_sample */
2474             i_chunk = p_track->i_chunk_count - 1;
2475             break;
2476         }
2477
2478         if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
2479             (uint64_t)i_start <  p_track->chunk[i_chunk + 1].i_first_dts )
2480         {
2481             break;
2482         }
2483     }
2484
2485     /* *** find sample in the chunk *** */
2486     i_sample = p_track->chunk[i_chunk].i_sample_first;
2487     i_dts    = p_track->chunk[i_chunk].i_first_dts;
2488     for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
2489     {
2490         if( i_dts +
2491             p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
2492             p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
2493         {
2494             i_dts    +=
2495                 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
2496                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
2497
2498             i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
2499             i_index++;
2500         }
2501         else
2502         {
2503             if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
2504             {
2505                 break;
2506             }
2507             i_sample += ( i_start - i_dts ) /
2508                 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
2509             break;
2510         }
2511     }
2512
2513     if( i_sample >= p_track->i_sample_count )
2514     {
2515         msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
2516                   "(seeking too far) chunk=%d sample=%d",
2517                   p_track->i_track_ID, i_chunk, i_sample );
2518         return( VLC_EGENERIC );
2519     }
2520
2521
2522     /* *** Try to find nearest sync points *** */
2523     if( ( p_box_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
2524     {
2525         MP4_Box_data_stss_t *p_stss = p_box_stss->data.p_stss;
2526         msg_Dbg( p_demux, "track[Id 0x%x] using Sync Sample Box (stss)",
2527                  p_track->i_track_ID );
2528         for( unsigned i_index = 0; i_index < p_stss->i_entry_count; i_index++ )
2529         {
2530             if( i_index >= p_stss->i_entry_count - 1 ||
2531                 i_sample < p_stss->i_sample_number[i_index+1] )
2532             {
2533                 unsigned i_sync_sample = p_stss->i_sample_number[i_index];
2534                 msg_Dbg( p_demux, "stss gives %d --> %d (sample number)",
2535                          i_sample, i_sync_sample );
2536
2537                 if( i_sync_sample <= i_sample )
2538                 {
2539                     while( i_chunk > 0 &&
2540                            i_sync_sample < p_track->chunk[i_chunk].i_sample_first )
2541                         i_chunk--;
2542                 }
2543                 else
2544                 {
2545                     while( i_chunk < p_track->i_chunk_count - 1 &&
2546                            i_sync_sample >= p_track->chunk[i_chunk].i_sample_first +
2547                                             p_track->chunk[i_chunk].i_sample_count )
2548                         i_chunk++;
2549                 }
2550                 i_sample = i_sync_sample;
2551                 break;
2552             }
2553         }
2554     }
2555     else
2556     {
2557         msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
2558                  "Sample Box (stss)", p_track->i_track_ID );
2559     }
2560
2561     *pi_chunk  = i_chunk;
2562     *pi_sample = i_sample;
2563
2564     return VLC_SUCCESS;
2565 }
2566
2567 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
2568                                  unsigned int i_chunk, unsigned int i_sample )
2569 {
2570     bool b_reselect = false;
2571
2572     /* now see if actual es is ok */
2573     if( p_track->i_chunk >= p_track->i_chunk_count ||
2574         p_track->chunk[p_track->i_chunk].i_sample_description_index !=
2575             p_track->chunk[i_chunk].i_sample_description_index )
2576     {
2577         msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
2578                   p_track->i_track_ID );
2579
2580         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
2581                         p_track->p_es, &b_reselect );
2582
2583         es_out_Del( p_demux->out, p_track->p_es );
2584
2585         p_track->p_es = NULL;
2586
2587         if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
2588         {
2589             msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2590                      p_track->i_track_ID );
2591
2592             p_track->b_ok       = false;
2593             p_track->b_selected = false;
2594             return VLC_EGENERIC;
2595         }
2596     }
2597
2598     /* select again the new decoder */
2599     if( b_reselect )
2600     {
2601         es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
2602     }
2603
2604     p_track->i_chunk    = i_chunk;
2605     p_track->chunk[i_chunk].i_sample = i_sample - p_track->chunk[i_chunk].i_sample_first;
2606     p_track->i_sample   = i_sample;
2607
2608     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2609 }
2610
2611 /****************************************************************************
2612  * MP4_TrackCreate:
2613  ****************************************************************************
2614  * Parse track information and create all needed data to run a track
2615  * If it succeed b_ok is set to 1 else to 0
2616  ****************************************************************************/
2617 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
2618                              MP4_Box_t *p_box_trak,
2619                              bool b_force_enable )
2620 {
2621     demux_sys_t *p_sys = p_demux->p_sys;
2622
2623     p_track->p_track = p_box_trak;
2624
2625     MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
2626     MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
2627     MP4_Box_t *p_elst;
2628
2629     MP4_Box_t *p_mdhd;
2630     MP4_Box_t *p_udta;
2631     MP4_Box_t *p_hdlr;
2632
2633     MP4_Box_t *p_vmhd;
2634     MP4_Box_t *p_smhd;
2635
2636     char language[4] = { '\0' };
2637
2638     /* hint track unsupported */
2639
2640     /* set default value (-> track unusable) */
2641     p_track->b_ok       = false;
2642     p_track->b_enable   = false;
2643     p_track->b_selected = false;
2644     p_track->b_chapter  = false;
2645     p_track->b_mac_encoding = false;
2646
2647     es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
2648
2649     if( !p_tkhd )
2650     {
2651         return;
2652     }
2653
2654     /* do we launch this track by default ? */
2655     p_track->b_enable =
2656         ( ( BOXDATA(p_tkhd)->i_flags&MP4_TRACK_ENABLED ) != 0 );
2657     if( !p_track->b_enable )
2658         p_track->fmt.i_priority = ES_PRIORITY_NOT_DEFAULTABLE;
2659
2660     p_track->i_track_ID = BOXDATA(p_tkhd)->i_track_ID;
2661
2662     p_track->i_width = BOXDATA(p_tkhd)->i_width / BLOCK16x16;
2663     p_track->i_height = BOXDATA(p_tkhd)->i_height / BLOCK16x16;
2664     p_track->f_rotation = BOXDATA(p_tkhd)->f_rotation;
2665
2666     if( p_tref )
2667     {
2668 /*        msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
2669     }
2670
2671     p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
2672     p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
2673
2674     if( ( !p_mdhd )||( !p_hdlr ) )
2675     {
2676         return;
2677     }
2678
2679     p_track->i_timescale = BOXDATA(p_mdhd)->i_timescale;
2680     if( p_track->i_timescale == 0 )
2681         return;
2682
2683     memcpy( &language, BOXDATA(p_mdhd)->rgs_language, 3 );
2684     p_track->b_mac_encoding = BOXDATA(p_mdhd)->b_mac_encoding;
2685
2686     switch( p_hdlr->data.p_hdlr->i_handler_type )
2687     {
2688         case( ATOM_soun ):
2689             if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2690             {
2691                 return;
2692             }
2693             p_track->fmt.i_cat = AUDIO_ES;
2694             break;
2695
2696         case( ATOM_vide ):
2697             if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2698             {
2699                 return;
2700             }
2701             p_track->fmt.i_cat = VIDEO_ES;
2702             break;
2703
2704         case( ATOM_tx3g ):
2705         case( ATOM_text ):
2706         case( ATOM_subp ):
2707         case( ATOM_sbtl ):
2708             p_track->fmt.i_cat = SPU_ES;
2709             break;
2710
2711         /* closed captions */
2712         case( ATOM_clcp ):
2713             p_track->fmt.i_cat = SPU_ES;
2714             break;
2715
2716         default:
2717             return;
2718     }
2719
2720     p_track->i_elst = 0;
2721     p_track->i_elst_time = 0;
2722     if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2723     {
2724         MP4_Box_data_elst_t *elst = BOXDATA(p_elst);
2725         unsigned int i;
2726
2727         msg_Warn( p_demux, "elst box found" );
2728         for( i = 0; i < elst->i_entry_count; i++ )
2729         {
2730             msg_Dbg( p_demux, "   - [%d] duration=%"PRId64"ms media time=%"PRId64
2731                      "ms) rate=%d.%d", i,
2732                      elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2733                      elst->i_media_time[i] >= 0 ?
2734                      (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2735                      INT64_C(-1),
2736                      elst->i_media_rate_integer[i],
2737                      elst->i_media_rate_fraction[i] );
2738         }
2739     }
2740
2741
2742 /*  TODO
2743     add support for:
2744     p_dinf = MP4_BoxGet( p_minf, "dinf" );
2745 */
2746     if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2747         !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2748     {
2749         return;
2750     }
2751
2752     /* Set language */
2753     if( *language && strcmp( language, "```" ) && strcmp( language, "und" ) )
2754     {
2755         p_track->fmt.psz_language = strdup( language );
2756     }
2757
2758     p_udta = MP4_BoxGet( p_box_trak, "udta" );
2759     if( p_udta )
2760     {
2761         MP4_Box_t *p_box_iter;
2762         for( p_box_iter = p_udta->p_first; p_box_iter != NULL;
2763                  p_box_iter = p_box_iter->p_next )
2764         {
2765             switch( p_box_iter->i_type )
2766             {
2767                 case ATOM_0xa9nam:
2768                 case ATOM_name:
2769                     p_track->fmt.psz_description =
2770                         strdup( p_box_iter->data.p_string->psz_text );
2771                 default:
2772                     break;
2773             }
2774         }
2775     }
2776
2777     /* Create chunk index table and sample index table */
2778     if( TrackCreateChunksIndex( p_demux,p_track  ) ||
2779         TrackCreateSamplesIndex( p_demux, p_track ) )
2780     {
2781         msg_Err( p_demux, "cannot create chunks index" );
2782         return; /* cannot create chunks index */
2783     }
2784
2785     p_track->i_chunk  = 0;
2786     p_track->i_sample = 0;
2787
2788     /* Mark chapter only track */
2789     if( p_sys->p_tref_chap )
2790     {
2791         MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2792         unsigned int i;
2793
2794         for( i = 0; i < p_chap->i_entry_count; i++ )
2795         {
2796             if( p_track->i_track_ID == p_chap->i_track_ID[i] &&
2797                 p_track->fmt.i_cat == UNKNOWN_ES )
2798             {
2799                 p_track->b_chapter = true;
2800                 p_track->b_enable = false;
2801                 break;
2802             }
2803         }
2804     }
2805
2806     const MP4_Box_t *p_tsel;
2807     /* now create es */
2808     if( b_force_enable &&
2809         ( p_track->fmt.i_cat == VIDEO_ES || p_track->fmt.i_cat == AUDIO_ES ) )
2810     {
2811         msg_Warn( p_demux, "Enabling track[Id 0x%x] (buggy file without enabled track)",
2812                   p_track->i_track_ID );
2813         p_track->b_enable = true;
2814         p_track->fmt.i_priority = ES_PRIORITY_SELECTABLE_MIN;
2815     }
2816     else if ( (p_tsel = MP4_BoxGet( p_box_trak, "udta/tsel" )) )
2817     {
2818         if ( BOXDATA(p_tsel) && BOXDATA(p_tsel)->i_switch_group )
2819         {
2820             p_track->i_switch_group = BOXDATA(p_tsel)->i_switch_group;
2821             int i_priority = ES_PRIORITY_SELECTABLE_MIN;
2822             for ( unsigned int i = 0; i < p_sys->i_tracks; i++ )
2823             {
2824                 const mp4_track_t *p_other = &p_sys->track[i];
2825                 if( p_other && p_other != p_track &&
2826                     p_other->fmt.i_cat == p_track->fmt.i_cat &&
2827                     p_track->i_switch_group == p_other->i_switch_group )
2828                         i_priority = __MAX( i_priority, p_other->fmt.i_priority + 1 );
2829             }
2830             /* VLC only support ES priority for AUDIO_ES and SPU_ES.
2831                If there's another VIDEO_ES in the same group, we need to unselect it then */
2832             if ( p_track->fmt.i_cat == VIDEO_ES && i_priority > ES_PRIORITY_SELECTABLE_MIN )
2833                 p_track->fmt.i_priority = ES_PRIORITY_NOT_DEFAULTABLE;
2834             else
2835                 p_track->fmt.i_priority = i_priority;
2836         }
2837     }
2838     /* If there's no tsel, try to enable the track coming first in edit list */
2839     else if ( p_track->p_elst && p_track->fmt.i_priority == ES_PRIORITY_SELECTABLE_MIN )
2840     {
2841 #define MAX_SELECTABLE (INT_MAX - ES_PRIORITY_SELECTABLE_MIN)
2842         for ( uint32_t i=0; i<p_track->BOXDATA(p_elst)->i_entry_count; i++ )
2843         {
2844             if ( p_track->BOXDATA(p_elst)->i_media_time[i] >= 0 &&
2845                  p_track->BOXDATA(p_elst)->i_segment_duration[i] )
2846             {
2847                 /* We do selection by inverting start time into priority.
2848                    The track with earliest edit will have the highest prio */
2849                 const int i_time = __MIN( MAX_SELECTABLE, p_track->BOXDATA(p_elst)->i_media_time[i] );
2850                 p_track->fmt.i_priority = ES_PRIORITY_SELECTABLE_MIN + MAX_SELECTABLE - i_time;
2851                 break;
2852             }
2853         }
2854     }
2855
2856     p_track->p_es = NULL;
2857     if( TrackCreateES( p_demux,
2858                        p_track, p_track->i_chunk,
2859                        p_track->b_chapter ? NULL : &p_track->p_es ) )
2860     {
2861         msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2862                  p_track->i_track_ID );
2863         return;
2864     }
2865     p_track->b_ok = true;
2866 #if 0
2867     {
2868         int i;
2869         for( i = 0; i < p_track->i_chunk_count; i++ )
2870         {
2871             fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2872                      i, p_track->chunk[i].i_sample_count,
2873                      p_track->chunk[i].i_first_dts );
2874
2875         }
2876     }
2877 #endif
2878 }
2879
2880 static void FreeAndResetChunk( mp4_chunk_t *ck )
2881 {
2882     free( ck->p_sample_count_dts );
2883     free( ck->p_sample_delta_dts );
2884     free( ck->p_sample_count_pts );
2885     free( ck->p_sample_offset_pts );
2886     free( ck->p_sample_size );
2887     for( uint32_t i = 0; i < ck->i_sample_count; i++ )
2888         free( ck->p_sample_data[i] );
2889     free( ck->p_sample_data );
2890     memset( ck, 0, sizeof( mp4_chunk_t ) );
2891 }
2892
2893 /****************************************************************************
2894  * MP4_TrackDestroy:
2895  ****************************************************************************
2896  * Destroy a track created by MP4_TrackCreate.
2897  ****************************************************************************/
2898 static void MP4_TrackDestroy( mp4_track_t *p_track )
2899 {
2900     unsigned int i_chunk;
2901
2902     p_track->b_ok = false;
2903     p_track->b_enable   = false;
2904     p_track->b_selected = false;
2905
2906     es_format_Clean( &p_track->fmt );
2907
2908     for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2909     {
2910         if( p_track->chunk )
2911         {
2912            FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2913            FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2914
2915            FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2916            FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2917         }
2918     }
2919     FREENULL( p_track->chunk );
2920     if( p_track->cchunk ) {
2921         FreeAndResetChunk( p_track->cchunk );
2922         FREENULL( p_track->cchunk );
2923     }
2924
2925     if( !p_track->i_sample_size )
2926     {
2927         FREENULL( p_track->p_sample_size );
2928     }
2929
2930     if ( p_track->asfinfo.p_frame )
2931         block_ChainRelease( p_track->asfinfo.p_frame );
2932 }
2933
2934 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2935                             mtime_t i_start )
2936 {
2937     if( !p_track->b_ok || p_track->b_chapter )
2938     {
2939         return VLC_EGENERIC;
2940     }
2941
2942     if( p_track->b_selected )
2943     {
2944         msg_Warn( p_demux, "track[Id 0x%x] already selected",
2945                   p_track->i_track_ID );
2946         return VLC_SUCCESS;
2947     }
2948
2949     return MP4_TrackSeek( p_demux, p_track, i_start );
2950 }
2951
2952 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2953 {
2954     if( !p_track->b_ok || p_track->b_chapter )
2955     {
2956         return;
2957     }
2958
2959     if( !p_track->b_selected )
2960     {
2961         msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2962                   p_track->i_track_ID );
2963         return;
2964     }
2965     if( p_track->p_es )
2966     {
2967         es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2968                         p_track->p_es, false );
2969     }
2970
2971     p_track->b_selected = false;
2972 }
2973
2974 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2975                           mtime_t i_start )
2976 {
2977     uint32_t i_chunk;
2978     uint32_t i_sample;
2979
2980     if( !p_track->b_ok || p_track->b_chapter )
2981         return VLC_EGENERIC;
2982
2983     p_track->b_selected = false;
2984
2985     if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2986                                 &i_chunk, &i_sample ) )
2987     {
2988         msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2989                   p_track->i_track_ID );
2990         return VLC_EGENERIC;
2991     }
2992
2993     p_track->b_selected = true;
2994     if( !TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) )
2995         p_track->b_selected = true;
2996
2997     return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2998 }
2999
3000
3001 /*
3002  * 3 types: for audio
3003  *
3004  */
3005 #define QT_V0_MAX_SAMPLES 1024
3006 static uint32_t MP4_TrackGetReadSize( mp4_track_t *p_track, uint32_t *pi_nb_samples )
3007 {
3008     uint32_t i_size = 0;
3009     *pi_nb_samples = 0;
3010
3011     if ( p_track->i_sample == p_track->i_sample_count )
3012         return 0;
3013
3014     if ( p_track->fmt.i_cat != AUDIO_ES )
3015     {
3016         *pi_nb_samples = 1;
3017
3018         if( p_track->i_sample_size == 0 ) /* all sizes are different */
3019             return p_track->p_sample_size[p_track->i_sample];
3020         else
3021             return p_track->i_sample_size;
3022     }
3023     else
3024     {
3025         const MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
3026         const mp4_chunk_t *p_chunk = &p_track->chunk[p_track->i_chunk];
3027         uint32_t i_max_samples = p_chunk->i_sample_count - p_chunk->i_sample;
3028
3029         /* Group audio packets so we don't call demux for single sample unit */
3030         if( p_track->fmt.i_original_fourcc == VLC_CODEC_DVD_LPCM &&
3031             p_soun->i_constLPCMframesperaudiopacket &&
3032             p_soun->i_constbytesperaudiopacket )
3033         {
3034             /* uncompressed case */
3035             uint32_t i_packets = i_max_samples / p_soun->i_constLPCMframesperaudiopacket;
3036             if ( UINT32_MAX / p_soun->i_constbytesperaudiopacket < i_packets )
3037                 i_packets = UINT32_MAX / p_soun->i_constbytesperaudiopacket;
3038             *pi_nb_samples = i_packets * p_soun->i_constLPCMframesperaudiopacket;
3039             return i_packets * p_soun->i_constbytesperaudiopacket;
3040         }
3041
3042         /* all samples have a different size */
3043         if( p_track->i_sample_size == 0 )
3044         {
3045             *pi_nb_samples = 1;
3046             return p_track->p_sample_size[p_track->i_sample];
3047         }
3048
3049         if( p_soun->i_qt_version == 1 )
3050         {
3051             if ( p_soun->i_compressionid == 0xFFFE )
3052             {
3053                 *pi_nb_samples = 1; /* != number of audio samples */
3054                 if ( p_track->i_sample_size )
3055                     return p_track->i_sample_size;
3056                 else
3057                     return p_track->p_sample_size[p_track->i_sample];
3058             }
3059             else if ( p_soun->i_compressionid != 0 || p_soun->i_bytes_per_sample > 1 ) /* compressed */
3060             {
3061                 /* in this case we are dealing with compressed data
3062                    -2 in V1: additional fields are meaningless (VBR and such) */
3063                 *pi_nb_samples = i_max_samples;//p_track->chunk[p_track->i_chunk].i_sample_count;
3064                 if( p_track->fmt.audio.i_blockalign > 1 )
3065                     *pi_nb_samples = p_soun->i_sample_per_packet;
3066                 i_size = *pi_nb_samples / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
3067                 return i_size;
3068             }
3069             else /* uncompressed case */
3070             {
3071                 uint32_t i_packets;
3072                 if( p_track->fmt.audio.i_blockalign > 1 )
3073                     i_packets = 1;
3074                 else
3075                     i_packets = i_max_samples / p_soun->i_sample_per_packet;
3076
3077                 if ( UINT32_MAX / p_soun->i_bytes_per_frame < i_packets )
3078                     i_packets = UINT32_MAX / p_soun->i_bytes_per_frame;
3079
3080                 *pi_nb_samples = i_packets * p_soun->i_sample_per_packet;
3081                 i_size = i_packets * p_soun->i_bytes_per_frame;
3082                 return i_size;
3083             }
3084         }
3085
3086         /* uncompressed v0 (qt) or... not (ISO) */
3087         *pi_nb_samples = 0;
3088         for( uint32_t i=p_track->i_sample;
3089              i<p_chunk->i_sample_first+p_chunk->i_sample_count &&
3090              i<p_track->i_sample_count;
3091              i++ )
3092         {
3093             (*pi_nb_samples)++;
3094             if ( p_track->i_sample_size == 0 )
3095                 i_size += p_track->p_sample_size[i];
3096             else
3097                 i_size += p_track->i_sample_size;
3098
3099             /* Try to detect compression in ISO */
3100             if(p_soun->i_compressionid != 0)
3101             {
3102                 /* Return only 1 sample */
3103                 break;
3104             }
3105
3106             if ( *pi_nb_samples == QT_V0_MAX_SAMPLES )
3107                 break;
3108         }
3109     }
3110
3111     //fprintf( stderr, "size=%d\n", i_size );
3112     return i_size;
3113 }
3114
3115 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
3116 {
3117     unsigned int i_sample;
3118     uint64_t i_pos;
3119
3120     i_pos = p_track->chunk[p_track->i_chunk].i_offset;
3121
3122     if( p_track->i_sample_size )
3123     {
3124         MP4_Box_data_sample_soun_t *p_soun =
3125             p_track->p_sample->data.p_sample_soun;
3126
3127         if( p_track->fmt.i_cat != AUDIO_ES || p_soun->i_qt_version == 0 ||
3128             p_track->fmt.audio.i_blockalign <= 1 ||
3129             p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame == 0 )
3130         {
3131             i_pos += ( p_track->i_sample -
3132                        p_track->chunk[p_track->i_chunk].i_sample_first ) *
3133                      p_track->i_sample_size;
3134         }
3135         else
3136         {
3137             /* we read chunk by chunk unless a blockalign is requested */
3138             i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) /
3139                         p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
3140         }
3141     }
3142     else
3143     {
3144         for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
3145              i_sample < p_track->i_sample; i_sample++ )
3146         {
3147             i_pos += p_track->p_sample_size[i_sample];
3148         }
3149     }
3150
3151     return i_pos;
3152 }
3153
3154 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track, uint32_t i_samples )
3155 {
3156     if ( UINT32_MAX - p_track->i_sample < i_samples )
3157     {
3158         p_track->i_sample = UINT32_MAX;
3159         return VLC_EGENERIC;
3160     }
3161
3162     p_track->i_sample += i_samples;
3163
3164     if( p_track->i_sample >= p_track->i_sample_count )
3165         return VLC_EGENERIC;
3166
3167     /* Have we changed chunk ? */
3168     if( p_track->i_sample >=
3169             p_track->chunk[p_track->i_chunk].i_sample_first +
3170             p_track->chunk[p_track->i_chunk].i_sample_count )
3171     {
3172         if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
3173                                   p_track->i_sample ) )
3174         {
3175             msg_Warn( p_demux, "track[0x%x] will be disabled "
3176                       "(cannot restart decoder)", p_track->i_track_ID );
3177             MP4_TrackUnselect( p_demux, p_track );
3178             return VLC_EGENERIC;
3179         }
3180     }
3181
3182     /* Have we changed elst */
3183     if( p_track->p_elst && p_track->BOXDATA(p_elst)->i_entry_count > 0 )
3184     {
3185         demux_sys_t *p_sys = p_demux->p_sys;
3186         MP4_Box_data_elst_t *elst = p_track->BOXDATA(p_elst);
3187         uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
3188                         p_sys->i_timescale / CLOCK_FREQ;
3189
3190         if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
3191             i_mvt >= p_track->i_elst_time +
3192                      elst->i_segment_duration[p_track->i_elst] )
3193         {
3194             MP4_TrackSetELST( p_demux, p_track,
3195                               MP4_TrackGetDTS( p_demux, p_track ) );
3196         }
3197     }
3198
3199     return VLC_SUCCESS;
3200 }
3201
3202 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
3203                               int64_t i_time )
3204 {
3205     demux_sys_t *p_sys = p_demux->p_sys;
3206     int         i_elst_last = tk->i_elst;
3207
3208     /* handle elst (find the correct one) */
3209     tk->i_elst      = 0;
3210     tk->i_elst_time = 0;
3211     if( tk->p_elst && tk->BOXDATA(p_elst)->i_entry_count > 0 )
3212     {
3213         MP4_Box_data_elst_t *elst = tk->BOXDATA(p_elst);
3214         int64_t i_mvt= i_time * p_sys->i_timescale / CLOCK_FREQ;
3215
3216         for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
3217         {
3218             mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
3219
3220             if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
3221             {
3222                 break;
3223             }
3224             tk->i_elst_time += i_dur;
3225         }
3226
3227         if( (unsigned int)tk->i_elst >= elst->i_entry_count )
3228         {
3229             /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
3230             tk->i_elst = elst->i_entry_count - 1;
3231             tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
3232         }
3233
3234         if( elst->i_media_time[tk->i_elst] < 0 )
3235         {
3236             /* track offset */
3237             tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
3238         }
3239     }
3240     if( i_elst_last != tk->i_elst )
3241     {
3242         msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
3243     }
3244 }
3245
3246 /******************************************************************************
3247  *     Here are the functions used for fragmented MP4
3248  *****************************************************************************/
3249
3250 /**
3251  * It computes the sample rate for a video track using current video chunk
3252  */
3253 static void ChunkGetESSampleRate( unsigned *pi_num, unsigned *pi_den,
3254                                   const mp4_track_t *p_track )
3255 {
3256     if( p_track->cchunk->i_last_dts == 0 )
3257         return;
3258
3259     *pi_num = 0;
3260     *pi_den = 0;
3261
3262     /* */
3263     const mp4_chunk_t *p_chunk = p_track->cchunk;
3264
3265     uint32_t i_sample = p_chunk->i_sample_count;
3266     uint64_t i_first_dts = p_chunk->i_first_dts;
3267     uint64_t i_last_dts =  p_chunk->i_last_dts;
3268
3269     if( i_sample > 1 && i_first_dts < i_last_dts )
3270         vlc_ureduce( pi_num, pi_den,
3271                      ( i_sample - 1) *  p_track->i_timescale,
3272                      i_last_dts - i_first_dts,
3273                      UINT16_MAX);
3274 }
3275
3276 /**
3277  * Build raw avcC box (without the 8 bytes header)
3278  * \return The size of the box.
3279  */
3280 static int build_raw_avcC( uint8_t **p_extra, const uint8_t *CodecPrivateData,
3281                                                        const unsigned cpd_len )
3282 {
3283     uint8_t *avcC;
3284     unsigned sps_len = 0, pps_len = 0;
3285     const uint32_t mark = 0x00000001;
3286
3287     assert( CodecPrivateData[0] == 0 );
3288     assert( CodecPrivateData[1] == 0 );
3289     assert( CodecPrivateData[2] == 0 );
3290     assert( CodecPrivateData[3] == 1 );
3291
3292     uint32_t length = cpd_len + 3;
3293     avcC = calloc( length, 1 );
3294     if( unlikely( avcC == NULL ) )
3295         return 0;
3296
3297     uint8_t *sps = avcC + 8;
3298
3299     uint32_t candidate = ~mark;
3300     CodecPrivateData += 4;
3301     for( unsigned i = 0; i < cpd_len - 4; i++ )
3302     {
3303         sps[i] = CodecPrivateData[i];
3304         candidate = (candidate << 8) | CodecPrivateData[i];
3305         if( candidate == mark )
3306         {
3307             sps_len = i - 3;
3308             break;
3309         }
3310     }
3311     if( sps_len == 0 )
3312     {
3313         free( avcC );
3314         return 0;
3315     }
3316     uint8_t *pps = sps + sps_len + 3;
3317     pps_len = cpd_len - sps_len - 4 * 2;
3318     memcpy( pps, CodecPrivateData + sps_len + 4, pps_len );
3319
3320     /* XXX */
3321     uint8_t AVCProfileIndication = 0x64;
3322     uint8_t profile_compatibility = 0x40;
3323     uint8_t AVCLevelIndication = 0x1f;
3324     uint8_t lengthSizeMinusOne = 0x03;
3325
3326     avcC[0] = 1;
3327     avcC[1] = AVCProfileIndication;
3328     avcC[2] = profile_compatibility;
3329     avcC[3] = AVCLevelIndication;
3330     avcC[4] = 0xfc + lengthSizeMinusOne;
3331     avcC[5] = 0xe0 + 1;
3332     avcC[6] = (sps_len & 0xff00)>>8;
3333     avcC[7] = sps_len & 0xff;
3334
3335     avcC[8+sps_len] = 1;
3336     avcC[9+sps_len] = (pps_len & 0xff00) >> 8;
3337     avcC[10+sps_len] = pps_len & 0xff;
3338
3339     *p_extra = avcC;
3340     return length;
3341 }
3342
3343 /**
3344  * Build a mp4_track_t from a StraBox
3345  */
3346
3347 static inline int MP4_SetCodecExtraData( es_format_t *fmt, MP4_Box_data_stra_t *p_data )
3348 {
3349     fmt->i_extra = p_data->cpd_len;
3350     fmt->p_extra = malloc( p_data->cpd_len );
3351     if( unlikely( !fmt->p_extra ) )
3352         return VLC_ENOMEM;
3353     memcpy( fmt->p_extra, p_data->CodecPrivateData, p_data->cpd_len );
3354     return VLC_SUCCESS;
3355   }
3356
3357 static int MP4_frg_TrackCreate( demux_t *p_demux, mp4_track_t *p_track, MP4_Box_t *p_stra )
3358 {
3359     demux_sys_t *p_sys = p_demux->p_sys;
3360     int ret;
3361     MP4_Box_data_stra_t *p_data = BOXDATA(p_stra);
3362     if( !p_data )
3363         return VLC_EGENERIC;
3364
3365     p_track->b_ok       = true;
3366     p_track->b_selected = false;
3367     p_track->i_sample_count = UINT32_MAX;
3368
3369     p_track->i_timescale = p_sys->i_timescale;
3370     p_track->i_width = p_data->MaxWidth;
3371     p_track->i_height = p_data->MaxHeight;
3372     p_track->i_track_ID = p_data->i_track_ID;
3373
3374     es_format_t *fmt = &p_track->fmt;
3375     if( fmt == NULL )
3376         return VLC_EGENERIC;
3377
3378     es_format_Init( fmt, p_data->i_es_cat, 0 );
3379
3380     /* Set language FIXME */
3381     fmt->psz_language = strdup( "en" );
3382
3383     fmt->i_original_fourcc = p_data->FourCC;
3384     fmt->i_codec = vlc_fourcc_GetCodec( fmt->i_cat, p_data->FourCC );
3385
3386     uint8_t **p_extra = (uint8_t **)&fmt->p_extra;
3387     /* See http://msdn.microsoft.com/en-us/library/ff728116%28v=vs.90%29.aspx
3388      * for MS weird use of FourCC*/
3389     switch( fmt->i_cat )
3390     {
3391         case VIDEO_ES:
3392             if( p_data->FourCC == VLC_FOURCC( 'A', 'V', 'C', '1' ) ||
3393                 p_data->FourCC == VLC_FOURCC( 'A', 'V', 'C', 'B' ) ||
3394                 p_data->FourCC == VLC_FOURCC( 'H', '2', '6', '4' ) )
3395             {
3396                 fmt->i_extra = build_raw_avcC( p_extra,
3397                         p_data->CodecPrivateData, p_data->cpd_len );
3398             }
3399             else
3400             {
3401                 ret = MP4_SetCodecExtraData( fmt, p_data );
3402                 if( ret != VLC_SUCCESS )
3403                     return ret;
3404             }
3405
3406             fmt->video.i_width = p_data->MaxWidth;
3407             fmt->video.i_height = p_data->MaxHeight;
3408             fmt->video.i_bits_per_pixel = 0x18;
3409             fmt->video.i_visible_width = p_data->MaxWidth;
3410             fmt->video.i_visible_height = p_data->MaxHeight;
3411
3412             /* Frame rate */
3413             ChunkGetESSampleRate( &fmt->video.i_frame_rate,
3414                                   &fmt->video.i_frame_rate_base, p_track );
3415
3416             if( fmt->video.i_frame_rate_base != 0 )
3417             {
3418                 p_demux->p_sys->f_fps = (float)fmt->video.i_frame_rate /
3419                                         (float)fmt->video.i_frame_rate_base;
3420             }
3421             else
3422                 p_demux->p_sys->f_fps = 24;
3423
3424             break;
3425
3426         case AUDIO_ES:
3427             fmt->audio.i_channels = p_data->Channels;
3428             fmt->audio.i_rate = p_data->SamplingRate;
3429             fmt->audio.i_bitspersample = p_data->BitsPerSample;
3430             fmt->audio.i_blockalign = p_data->nBlockAlign;
3431
3432             fmt->i_bitrate = p_data->Bitrate;
3433
3434             ret = MP4_SetCodecExtraData( fmt, p_data );
3435             if( ret != VLC_SUCCESS )
3436                 return ret;
3437
3438             break;
3439
3440         default:
3441             break;
3442     }
3443
3444     return VLC_SUCCESS;
3445 }
3446
3447 /**
3448  * Return the track identified by tid
3449  */
3450 static mp4_track_t *MP4_frg_GetTrackByID( demux_t *p_demux, const uint32_t tid )
3451 {
3452     demux_sys_t *p_sys = p_demux->p_sys;
3453
3454     mp4_track_t *ret = NULL;
3455     for( unsigned i = 0; i < p_sys->i_tracks; i++ )
3456     {
3457         ret = &p_sys->track[i];
3458         if( ret->i_track_ID == tid )
3459             return ret;
3460     }
3461     msg_Err( p_demux, "MP4_frg_GetTrack: track %"PRIu32" not found!", tid );
3462     return NULL;
3463 }
3464
3465 static void FlushChunk( demux_t *p_demux, mp4_track_t *tk )
3466 {
3467     msg_Dbg( p_demux, "Flushing chunk for track id %u", tk->i_track_ID );
3468     mp4_chunk_t *ck = tk->cchunk;
3469     while( ck->i_sample < ck->i_sample_count )
3470     {
3471         block_t *p_block;
3472         int64_t i_delta;
3473
3474         if( ck->p_sample_size == NULL || ck->p_sample_data == NULL )
3475             return;
3476
3477         uint32_t sample_size = ck->p_sample_size[ck->i_sample];
3478         assert( sample_size > 0 );
3479         p_block = block_Alloc( sample_size );
3480         if( unlikely( !p_block ) )
3481             return;
3482
3483         uint8_t *src = ck->p_sample_data[ck->i_sample];
3484         memcpy( p_block->p_buffer, src, sample_size );
3485         ck->i_sample++;
3486
3487         /* dts */
3488         p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
3489         /* pts */
3490         if( MP4_TrackGetPTSDelta( p_demux, tk, &i_delta ) )
3491             p_block->i_pts = p_block->i_dts + i_delta;
3492         else if( tk->fmt.i_cat != VIDEO_ES )
3493             p_block->i_pts = p_block->i_dts;
3494         else
3495             p_block->i_pts = VLC_TS_INVALID;
3496
3497         MP4_Block_Send( p_demux, tk, p_block );
3498
3499         tk->i_sample++;
3500     }
3501 }
3502
3503 /**
3504  * Re-init decoder.
3505  * \Note If we call that function too soon,
3506  * before the track has been selected by MP4_TrackSelect
3507  * (during the first execution of Demux), then the track gets disabled
3508  */
3509 static int ReInitDecoder( demux_t *p_demux, mp4_track_t *p_track )
3510 {
3511     demux_sys_t *p_sys = p_demux->p_sys;
3512
3513     uint32_t i_sample = 0;
3514     bool b_smooth = false;
3515     MP4_Box_t *p_stra = NULL, *p_trak = NULL;
3516
3517     if( !CmpUUID( &p_sys->p_root->p_first->i_uuid, &SmooBoxUUID ) )
3518         b_smooth = true;
3519
3520     if( b_smooth )
3521     {
3522         p_stra = MP4_BoxGet( p_sys->p_root, "uuid/uuid[0]" );
3523         if( !p_stra || CmpUUID( &p_stra->i_uuid, &StraBoxUUID ) )
3524             return VLC_EGENERIC;
3525     }
3526     else /* DASH */
3527     {
3528         p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[0]" );
3529         if( !p_trak )
3530             return VLC_EGENERIC;
3531     }
3532
3533     i_sample = p_track->i_sample;
3534     es_out_Del( p_demux->out, p_track->p_es );
3535     es_format_Clean( &p_track->fmt );
3536
3537     if( b_smooth )
3538         MP4_frg_TrackCreate( p_demux, p_track, p_stra );
3539     else /* DASH */
3540         MP4_TrackCreate( p_demux, p_track, p_trak, true );
3541
3542     p_track->i_sample = i_sample;
3543
3544     /* Temporary hack until we support track selection */
3545     p_track->b_selected = true;
3546     p_track->b_ok = true;
3547     p_track->b_enable = true;
3548
3549     p_track->p_es = es_out_Add( p_demux->out, &p_track->fmt );
3550     p_track->b_codec_need_restart = false;
3551
3552     return VLC_SUCCESS;
3553 }
3554
3555 /**
3556  * This function fills a mp4_chunk_t structure from a MP4_Box_t (p_chunk).
3557  * The 'i_tk_id' argument returns the ID of the track the chunk belongs to.
3558  * \note p_chunk usually contains a 'moof' and a 'mdat', and might contain a 'sidx'.
3559  * \return VLC_SUCCESS, VLC_EGENERIC or VLC_ENOMEM.
3560  */
3561 static int MP4_frg_GetChunk( demux_t *p_demux, MP4_Box_t *p_chunk, unsigned *i_tk_id )
3562 {
3563     MP4_Box_t *p_traf = MP4_BoxGet( p_chunk, "moof/traf" );
3564     if( p_traf == NULL)
3565     {
3566         msg_Warn( p_demux, "no traf box found!" );
3567         return VLC_EGENERIC;
3568     }
3569
3570     MP4_Box_t *p_tfhd = MP4_BoxGet( p_traf, "tfhd" );
3571     if( p_tfhd == NULL)
3572     {
3573         msg_Warn( p_demux, "no tfhd box found!" );
3574         return VLC_EGENERIC;
3575     }
3576
3577     uint32_t i_track_ID = BOXDATA(p_tfhd)->i_track_ID;
3578     *i_tk_id = i_track_ID;
3579     assert( i_track_ID > 0 );
3580     msg_Dbg( p_demux, "GetChunk: track ID is %"PRIu32"", i_track_ID );
3581
3582     mp4_track_t *p_track = MP4_frg_GetTrackByID( p_demux, i_track_ID );
3583     if( !p_track )
3584         return VLC_EGENERIC;
3585
3586     mp4_chunk_t *ret = p_track->cchunk;
3587
3588     if( BOXDATA(p_tfhd)->b_empty )
3589         msg_Warn( p_demux, "No samples in this chunk!" );
3590
3591     /* Usually we read 100 ms of each track. However, suppose we have two tracks,
3592      * Ta and Tv (audio and video). Suppose also that Ta is the first track to be
3593      * read, i.e. we read 100 ms of Ta, then 100 ms of Tv, then 100 ms of Ta,
3594      * and so on. Finally, suppose that we get the chunks the other way around,
3595      * i.e. first a chunk of Tv, then a chunk of Ta, then a chunk of Tv, and so on.
3596      * In that case, it is very likely that at some point, Ta->cchunk or Tv->cchunk
3597      * is not emptied when MP4_frg_GetChunks is called. It is therefore necessary to
3598      * flush it, i.e. send to the decoder the samples not yet sent.
3599      * Note that all the samples to be flushed should worth less than 100 ms,
3600      * (though I did not do the formal proof) and thus this flushing mechanism
3601      * should not cause A/V sync issues, or delays or whatever.
3602      */
3603     if( ret->i_sample < ret->i_sample_count )
3604         FlushChunk( p_demux, p_track );
3605
3606     if( ret->i_sample_count )
3607         FreeAndResetChunk( ret );
3608
3609     MP4_Box_t *p_trun = MP4_BoxGet( p_traf, "trun");
3610     if( p_trun == NULL)
3611     {
3612         msg_Warn( p_demux, "no trun box found!" );
3613         return VLC_EGENERIC;
3614     }
3615     MP4_Box_data_trun_t *p_trun_data = p_trun->data.p_trun;
3616
3617     ret->i_sample_count = p_trun_data->i_sample_count;
3618     assert( ret->i_sample_count > 0 );
3619     ret->i_sample_description_index = 1; /* seems to be always 1, is it? */
3620     ret->i_sample_first = p_track->i_sample_first;
3621     p_track->i_sample_first += ret->i_sample_count;
3622
3623     ret->i_first_dts = p_track->i_first_dts;
3624
3625     uint32_t default_duration = 0;
3626     uint32_t default_size = 0;
3627
3628     MP4_GetDefaultSizeAndDuration( p_demux, BOXDATA(p_tfhd),
3629                                    &default_size, &default_duration );
3630
3631     ret->p_sample_count_dts = calloc( ret->i_sample_count, sizeof( uint32_t ) );
3632     ret->p_sample_delta_dts = calloc( ret->i_sample_count, sizeof( uint32_t ) );
3633
3634     if( !ret->p_sample_count_dts || !ret->p_sample_delta_dts )
3635     {
3636         free( ret->p_sample_count_dts );
3637         free( ret->p_sample_delta_dts );
3638         return VLC_ENOMEM;
3639     }
3640
3641     ret->p_sample_count_pts = calloc( ret->i_sample_count, sizeof( uint32_t ) );
3642     if( !ret->p_sample_count_pts )
3643         return VLC_ENOMEM;
3644
3645     if( p_trun_data->i_flags & MP4_TRUN_SAMPLE_TIME_OFFSET )
3646     {
3647         ret->p_sample_offset_pts = calloc( ret->i_sample_count, sizeof( int32_t ) );
3648         if( !ret->p_sample_offset_pts )
3649             return VLC_ENOMEM;
3650     }
3651
3652     ret->p_sample_size = calloc( ret->i_sample_count, sizeof( uint32_t ) );
3653     if( !ret->p_sample_size )
3654         return VLC_ENOMEM;
3655
3656     ret->p_sample_data = calloc( ret->i_sample_count, sizeof( uint8_t * ) );
3657     if( !ret->p_sample_data )
3658         return VLC_ENOMEM;
3659
3660     uint32_t dur = 0, i_mdatlen = 0, len;
3661     uint32_t chunk_duration = 0, chunk_size = 0;
3662
3663     /* Skip header of mdat */
3664     uint8_t mdat[8];
3665     int i_read = stream_Read( p_demux->s, &mdat, 8 );
3666     i_mdatlen = GetDWBE( mdat );
3667     if ( i_read < 8 || i_mdatlen < 8 ||
3668          VLC_FOURCC( mdat[4], mdat[5], mdat[6], mdat[7] ) != ATOM_mdat )
3669         return VLC_EGENERIC;
3670
3671     for( uint32_t i = 0; i < ret->i_sample_count; i++)
3672     {
3673         if( p_trun_data->i_flags & MP4_TRUN_SAMPLE_DURATION )
3674             dur = p_trun_data->p_samples[i].i_duration;
3675         else
3676             dur = default_duration;
3677         ret->p_sample_delta_dts[i] = dur;
3678         chunk_duration += dur;
3679
3680         ret->p_sample_count_dts[i] = ret->p_sample_count_pts[i] = 1;
3681
3682         if( ret->p_sample_offset_pts )
3683         {
3684             if ( p_trun_data->i_version == 0 )
3685                 ret->p_sample_offset_pts[i] = (int32_t) p_trun_data->p_samples[i].i_composition_time_offset;
3686             else
3687                 ret->p_sample_offset_pts[i] = __MIN( INT32_MAX, p_trun_data->p_samples[i].i_composition_time_offset );
3688         }
3689
3690         if( p_trun_data->i_flags & MP4_TRUN_SAMPLE_SIZE )
3691             len = ret->p_sample_size[i] = p_trun_data->p_samples[i].i_size;
3692         else
3693             len = ret->p_sample_size[i] = default_size;
3694
3695         if ( chunk_size + len > ( i_mdatlen - 8 ) )
3696             return VLC_EGENERIC;
3697
3698         ret->p_sample_data[i] = malloc( len );
3699         if( ret->p_sample_data[i] == NULL )
3700             return VLC_ENOMEM;
3701         uint32_t i_read = stream_ReadU32( p_demux->s, ret->p_sample_data[i], len );
3702         if( i_read < len )
3703             return VLC_EGENERIC;
3704         chunk_size += len;
3705     }
3706     ret->i_last_dts = ret->i_first_dts + chunk_duration - dur;
3707     p_track->i_first_dts = chunk_duration + ret->i_first_dts;
3708
3709     if( p_track->b_codec_need_restart &&
3710             p_track->fmt.i_cat == VIDEO_ES )
3711         ReInitDecoder( p_demux, p_track );
3712
3713     /* Skip if we didn't reach the end of mdat box */
3714     if ( chunk_size < (i_mdatlen - 8) )
3715         stream_ReadU32( p_demux->s, NULL, i_mdatlen - chunk_size - 8 );
3716
3717     p_track->b_has_non_empty_cchunk = true;
3718     return VLC_SUCCESS;
3719 }
3720
3721
3722 /**
3723  * Get the next chunk of the track identified by i_tk_id.
3724  * \Note We don't want to seek all the time, so if the first chunk given by the
3725  * input method doesn't belong to the right track, we don't throw it away,
3726  * and so, in general, this function fetch more than one chunk.
3727  * Not to mention that a new init fragment might be put everywhere
3728  * between two chunks by the input method.
3729  */
3730 static int MP4_frg_GetChunks( demux_t *p_demux, const unsigned i_tk_id )
3731 {
3732     demux_sys_t *p_sys = p_demux->p_sys;
3733     mp4_track_t *p_track;
3734
3735     for( unsigned i = 0; i < p_sys->i_tracks; i++ )
3736     {
3737         MP4_Box_t *p_chunk = MP4_BoxGetNextChunk( p_demux->s );
3738         if( !p_chunk )
3739             return VLC_EGENERIC;
3740
3741         if( !p_chunk->p_first )
3742             goto MP4_frg_GetChunks_Error;
3743         uint32_t i_type = p_chunk->p_first->i_type;
3744         uint32_t tid = 0;
3745         if( i_type == ATOM_uuid || i_type == ATOM_ftyp )
3746         {
3747             MP4_BoxFree( p_demux->s, p_sys->p_root );
3748             p_sys->p_root = p_chunk;
3749
3750             if( i_type == ATOM_ftyp ) /* DASH */
3751             {
3752                 MP4_Box_t *p_tkhd = MP4_BoxGet( p_chunk, "/moov/trak[0]/tkhd" );
3753                 if( !p_tkhd )
3754                 {
3755                     msg_Warn( p_demux, "No tkhd found!" );
3756                     goto MP4_frg_GetChunks_Error;
3757                 }
3758                 tid = p_tkhd->data.p_tkhd->i_track_ID;
3759             }
3760             else                      /* Smooth Streaming */
3761             {
3762                 assert( !CmpUUID( &p_chunk->p_first->i_uuid, &SmooBoxUUID ) );
3763                 MP4_Box_t *p_stra = MP4_BoxGet( p_chunk, "/uuid/uuid[0]" );
3764                 if( !p_stra || CmpUUID( &p_stra->i_uuid, &StraBoxUUID ) )
3765                 {
3766                     msg_Warn( p_demux, "No StraBox found!" );
3767                     goto MP4_frg_GetChunks_Error;
3768                 }
3769                 tid = p_stra->data.p_stra->i_track_ID;
3770             }
3771
3772             p_track = MP4_frg_GetTrackByID( p_demux, tid );
3773             if( !p_track )
3774                 goto MP4_frg_GetChunks_Error;
3775             p_track->b_codec_need_restart = true;
3776
3777             return MP4_frg_GetChunks( p_demux, i_tk_id );
3778         }
3779
3780         if( MP4_frg_GetChunk( p_demux, p_chunk, &tid ) != VLC_SUCCESS )
3781             goto MP4_frg_GetChunks_Error;
3782
3783         MP4_BoxFree( p_demux->s, p_chunk );
3784
3785         if( tid == i_tk_id )
3786             break;
3787         else
3788             continue;
3789
3790 MP4_frg_GetChunks_Error:
3791         MP4_BoxFree( p_demux->s, p_chunk );
3792         return VLC_EGENERIC;
3793     }
3794
3795     return VLC_SUCCESS;
3796 }
3797
3798 static int MP4_frg_TrackSelect( demux_t *p_demux, mp4_track_t *p_track )
3799 {
3800     if( !p_track->b_ok || p_track->b_chapter )
3801     {
3802         return VLC_EGENERIC;
3803     }
3804
3805     if( p_track->b_selected )
3806     {
3807         msg_Warn( p_demux, "track[Id 0x%x] already selected", p_track->i_track_ID );
3808         return VLC_SUCCESS;
3809     }
3810
3811     msg_Dbg( p_demux, "Select track id %u", p_track->i_track_ID );
3812     p_track->b_selected = true;
3813     return VLC_SUCCESS;
3814 }
3815
3816 /**
3817  * DemuxFrg: read packet and send them to decoders
3818  * \return 1 on success, 0 on error.
3819  * TODO check for newly selected track
3820  */
3821 int DemuxFrg( demux_t *p_demux )
3822 {
3823     demux_sys_t *p_sys = p_demux->p_sys;
3824     unsigned i_track;
3825     unsigned i_track_selected;
3826
3827     /* check for newly selected/unselected track */
3828     for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks; i_track++ )
3829     {
3830         mp4_track_t *tk = &p_sys->track[i_track];
3831         bool b;
3832
3833         if( !tk->b_ok || tk->b_chapter )
3834             continue;
3835
3836         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
3837         msg_Dbg( p_demux, "track %u %s!", tk->i_track_ID, b ? "enabled" : "disabled" );
3838
3839         if( tk->b_selected && !b )
3840         {
3841             MP4_TrackUnselect( p_demux, tk );
3842         }
3843         else if( !tk->b_selected && b)
3844         {
3845             MP4_frg_TrackSelect( p_demux, tk );
3846         }
3847
3848         if( tk->b_selected )
3849             i_track_selected++;
3850     }
3851
3852     if( i_track_selected <= 0 )
3853     {
3854         p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
3855         if( p_sys->i_timescale > 0 )
3856         {
3857             int64_t i_length = CLOCK_FREQ *
3858                                (mtime_t)p_sys->i_overall_duration /
3859                                (mtime_t)p_sys->i_timescale;
3860             if( MP4_GetMoviePTS( p_sys ) >= i_length )
3861                 return 0;
3862             return 1;
3863         }
3864
3865         msg_Warn( p_demux, "no track selected, exiting..." );
3866         return 0;
3867     }
3868
3869     /* first wait for the good time to read a packet */
3870     es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
3871
3872     p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
3873
3874     /* we will read 100ms for each stream so ...*/
3875     p_sys->i_time += __MAX( p_sys->i_timescale / 10, 1 );
3876
3877     for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
3878     {
3879         mp4_track_t *tk = &p_sys->track[i_track];
3880
3881         if( !tk->b_ok || tk->b_chapter || !tk->b_selected )
3882         {
3883             msg_Warn( p_demux, "Skipping track id %u", tk->i_track_ID );
3884             continue;
3885         }
3886
3887         if( !tk->b_has_non_empty_cchunk )
3888         {
3889             if( MP4_frg_GetChunks( p_demux, tk->i_track_ID ) != VLC_SUCCESS )
3890             {
3891                 msg_Info( p_demux, "MP4_frg_GetChunks returned error. End of stream?" );
3892                 return 0;
3893             }
3894         }
3895
3896         while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
3897         {
3898             block_t *p_block;
3899             int64_t i_delta;
3900
3901             mp4_chunk_t *ck = tk->cchunk;
3902             if( ck->i_sample >= ck->i_sample_count )
3903             {
3904                 msg_Err( p_demux, "sample %"PRIu32" of %"PRIu32"",
3905                                     ck->i_sample, ck->i_sample_count );
3906                 return 0;
3907             }
3908
3909             uint32_t sample_size = ck->p_sample_size[ck->i_sample];
3910             p_block = block_Alloc( sample_size );
3911             uint8_t *src = ck->p_sample_data[ck->i_sample];
3912             memcpy( p_block->p_buffer, src, sample_size );
3913
3914             ck->i_sample++;
3915             if( ck->i_sample == ck->i_sample_count )
3916                 tk->b_has_non_empty_cchunk = false;
3917
3918             /* dts */
3919             p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
3920             /* pts */
3921             if( MP4_TrackGetPTSDelta( p_demux, tk, &i_delta ) )
3922                 p_block->i_pts = p_block->i_dts + i_delta;
3923             else if( tk->fmt.i_cat != VIDEO_ES )
3924                 p_block->i_pts = p_block->i_dts;
3925             else
3926                 p_block->i_pts = VLC_TS_INVALID;
3927
3928             MP4_Block_Send( p_demux, tk, p_block );
3929
3930             tk->i_sample++;
3931
3932             if( !tk->b_has_non_empty_cchunk )
3933                 break;
3934         }
3935     }
3936     return 1;
3937 }
3938
3939 static MP4_Box_t * LoadNextChunk( demux_t *p_demux )
3940 {
3941     /* Read Next Chunk */
3942     MP4_Box_t *p_chunk = MP4_BoxGetNextChunk( p_demux->s );
3943     if( !p_chunk )
3944     {
3945         msg_Warn( p_demux, "no next chunk" );
3946         return NULL;
3947     }
3948
3949     if( !p_chunk->p_first )
3950     {
3951         msg_Warn( p_demux, "no next chunk child" );
3952         return NULL;
3953     }
3954
3955     return p_chunk;
3956 }
3957
3958 static bool BoxExistsInRootTree( MP4_Box_t *p_root, uint32_t i_type, off_t i_pos )
3959 {
3960     while ( p_root )
3961     {
3962         if ( p_root->i_pos == i_pos )
3963         {
3964             assert( i_type == p_root->i_type );
3965             break;
3966         }
3967         p_root = p_root->p_next;
3968     }
3969     return (p_root != NULL);
3970 }
3971
3972 static mtime_t SumFragmentsDurations( demux_t *p_demux )
3973 {
3974     demux_sys_t *p_sys = p_demux->p_sys;
3975     mtime_t i_max_duration = 0;
3976
3977     for ( unsigned int i=0; i<p_sys->i_tracks; i++ )
3978     {
3979         mtime_t i_duration = 0;
3980         const mp4_fragment_t *p_fragment = &p_sys->moovfragment;
3981         while ( p_fragment && p_fragment->p_durations )
3982         {
3983             i_duration += GetTrackDurationInFragment( p_fragment,
3984                                                       p_sys->track[i].i_track_ID );
3985             p_fragment = p_fragment->p_next;
3986         }
3987         i_max_duration = __MAX( i_duration, i_max_duration );
3988     }
3989
3990     return i_max_duration;
3991 }
3992
3993 /* Keeps an ordered chain of all fragments */
3994 static bool AddFragment( demux_t *p_demux, MP4_Box_t *p_moox )
3995 {
3996     demux_sys_t *p_sys = p_demux->p_sys;
3997     mp4_fragment_t *p_base_fragment = & p_sys->moovfragment;
3998     if ( !p_moox )
3999         return false;
4000
4001     if( p_moox->i_type == ATOM_moov )
4002     {
4003         if ( !p_sys->moovfragment.p_moox )
4004         {
4005             p_sys->moovfragment.p_moox = p_moox;
4006             MP4_Box_t *p_mvhd;
4007             if( (p_mvhd = MP4_BoxGet( p_moox, "mvhd" )) )
4008             {
4009                 p_sys->i_timescale = BOXDATA(p_mvhd)->i_timescale;
4010                 p_sys->i_overall_duration = BOXDATA(p_mvhd)->i_duration;
4011             }
4012
4013             if ( MP4_BoxCount( p_moox, "mvex" ) || !p_mvhd )
4014             { /* duration might be wrong an be set to whole duration :/ */
4015                MP4_Box_t *p_tkhd;
4016                MP4_Box_t *p_trak = MP4_BoxGet( p_moox, "trak" );
4017                unsigned int i_trakcount = MP4_BoxCount( p_moox, "trak" );
4018                p_sys->moovfragment.p_durations = calloc( i_trakcount, sizeof(*p_sys->moovfragment.p_durations) );
4019                if ( i_trakcount && !p_sys->moovfragment.p_durations )
4020                    return 0;
4021                p_sys->moovfragment.i_durations = i_trakcount;
4022                i_trakcount = 0;
4023                while( p_trak )
4024                {
4025                    if ( p_trak->i_type == ATOM_trak && (p_tkhd = MP4_BoxGet( p_trak, "tkhd" )) )
4026                    {
4027                        p_sys->moovfragment.p_durations[i_trakcount].i_duration = BOXDATA(p_tkhd)->i_duration;
4028                        p_sys->moovfragment.p_durations[i_trakcount++].i_track_ID = BOXDATA(p_tkhd)->i_track_ID;
4029                    }
4030                    p_trak = p_trak->p_next;
4031                }
4032             }
4033
4034             msg_Dbg( p_demux, "added fragment %4.4s", (char*) &p_moox->i_type );
4035             return true;
4036         }
4037         return false;
4038     }
4039     else // p_moox->i_type == ATOM_moof
4040     {
4041         assert(p_moox->i_type == ATOM_moof);
4042         mp4_fragment_t *p_fragment = p_sys->moovfragment.p_next;
4043         while ( p_fragment )
4044         {
4045             if ( !p_base_fragment->p_moox || p_moox->i_pos > p_base_fragment->p_moox->i_pos )
4046             {
4047                 p_base_fragment = p_fragment;
4048                 p_fragment = p_fragment->p_next;
4049             }
4050             else if ( p_moox->i_pos == p_base_fragment->p_moox->i_pos )
4051             {
4052                 /* already exists */
4053                 return false;
4054             }
4055         }
4056     }
4057
4058     /* Add the moof fragment */
4059     mp4_fragment_t *p_new = malloc(sizeof(mp4_fragment_t));
4060     if ( !p_new ) return false;
4061     p_new->p_moox = p_moox;
4062     p_new->i_durations = MP4_BoxCount( p_new->p_moox, "traf" );
4063     p_new->p_durations = calloc( p_new->i_durations, sizeof(*p_new->p_durations) );
4064     if ( p_new->i_durations && !p_new->p_durations )
4065     {
4066         free( p_new );
4067         return false;
4068     }
4069     p_new->p_next = p_base_fragment->p_next;
4070     p_base_fragment->p_next = p_new;
4071     msg_Dbg( p_demux, "added fragment %4.4s", (char*) &p_moox->i_type );
4072
4073     /* we have to probe all fragments :/ */
4074     uint64_t i_traf_base_data_offset = 0;
4075     uint64_t i_traf_min_offset = 0;
4076     uint32_t i_traf = 0;
4077     uint32_t i_traf_total_size = 0;
4078     uint32_t i_trafs_total_size = 0;
4079
4080     MP4_Box_t *p_traf = MP4_BoxGet( p_new->p_moox, "traf" );
4081     unsigned int i_durationindex = 0;
4082     while ( p_traf )
4083     {
4084         if ( p_traf->i_type != ATOM_traf )
4085         {
4086            p_traf = p_traf->p_next;
4087            continue;
4088         }
4089         const MP4_Box_t *p_tfhd = MP4_BoxGet( p_traf, "tfhd" );
4090         const MP4_Box_t *p_trun = MP4_BoxGet( p_traf, "trun" );
4091         if ( !p_tfhd || !p_trun )
4092         {
4093            p_traf = p_traf->p_next;
4094            continue;
4095         }
4096
4097         uint32_t i_track_timescale = 0;
4098         uint32_t i_track_defaultsamplesize = 0;
4099         uint32_t i_track_defaultsampleduration = 0;
4100         if ( p_sys->b_smooth )
4101         {
4102             /* stra sets identical timescales */
4103             i_track_timescale = p_sys->i_timescale;
4104             i_track_defaultsamplesize = 1;
4105             i_track_defaultsampleduration = 1;
4106         }
4107         else
4108         {
4109             /* set trex for defaults */
4110              MP4_Box_t *p_trex = MP4_GetTrexByTrackID( p_sys->moovfragment.p_moox, BOXDATA(p_tfhd)->i_track_ID );
4111              if ( p_trex )
4112              {
4113                 i_track_defaultsamplesize = BOXDATA(p_trex)->i_default_sample_size;
4114                 i_track_defaultsampleduration = BOXDATA(p_trex)->i_default_sample_duration;
4115              }
4116
4117              MP4_Box_t *p_trak = MP4_GetTrakByTrackID( p_sys->moovfragment.p_moox, BOXDATA(p_tfhd)->i_track_ID );
4118              if ( p_trak )
4119              {
4120                 MP4_Box_t *p_mdhd = MP4_BoxGet( p_trak, "mdia/mdhd" );
4121                 if ( p_mdhd ) i_track_timescale = BOXDATA(p_mdhd)->i_timescale;
4122              }
4123         }
4124
4125         if ( !i_track_timescale )
4126         {
4127            p_traf = p_traf->p_next;
4128            continue;
4129         }
4130
4131         if ( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_BASE_DATA_OFFSET )
4132         {
4133             i_traf_base_data_offset = BOXDATA(p_tfhd)->i_base_data_offset;
4134         }
4135         else if ( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DEFAULT_BASE_IS_MOOF )
4136         {
4137             i_traf_base_data_offset = p_new->p_moox->i_pos /* + 8*/;
4138         }
4139         else
4140         {
4141             if ( i_traf == 0 )
4142                 i_traf_base_data_offset = p_new->p_moox->i_pos /*+ 8*/;
4143             else
4144                 i_traf_base_data_offset += i_traf_total_size;
4145         }
4146
4147         i_traf_total_size = 0;
4148
4149         uint64_t i_trun_data_offset = i_traf_base_data_offset;
4150         uint64_t i_traf_duration = 0;
4151         uint32_t i_trun_size = 0;
4152         while ( p_trun && p_tfhd )
4153         {
4154             if ( p_trun->i_type != ATOM_trun )
4155             {
4156                p_trun = p_trun->p_next;
4157                continue;
4158             }
4159             const MP4_Box_data_trun_t *p_trundata = p_trun->data.p_trun;
4160
4161             /* Get data offset */
4162             if ( p_trundata->i_flags & MP4_TRUN_DATA_OFFSET )
4163                 i_trun_data_offset += __MAX( p_trundata->i_data_offset, 0 );
4164             else
4165                 i_trun_data_offset += i_trun_size;
4166
4167             i_trun_size = 0;
4168
4169             /* Sum total time */
4170             if ( p_trundata->i_flags & MP4_TRUN_SAMPLE_DURATION )
4171             {
4172                 for( uint32_t i=0; i< p_trundata->i_sample_count; i++ )
4173                     i_traf_duration += p_trundata->p_samples[i].i_duration;
4174             }
4175             else if ( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DFLT_SAMPLE_DURATION )
4176             {
4177                 i_traf_duration += p_trundata->i_sample_count *
4178                         BOXDATA(p_tfhd)->i_default_sample_duration;
4179             }
4180             else
4181             {
4182                 i_traf_duration += p_trundata->i_sample_count *
4183                         i_track_defaultsampleduration;
4184             }
4185
4186             /* Get total traf size */
4187             if ( p_trundata->i_flags & MP4_TRUN_SAMPLE_SIZE )
4188             {
4189                 for( uint32_t i=0; i< p_trundata->i_sample_count; i++ )
4190                     i_trun_size += p_trundata->p_samples[i].i_size;
4191             }
4192             else if ( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DFLT_SAMPLE_SIZE )
4193             {
4194                 i_trun_size += p_trundata->i_sample_count *
4195                         BOXDATA(p_tfhd)->i_default_sample_size;
4196             }
4197             else
4198             {
4199                 i_trun_size += p_trundata->i_sample_count *
4200                         i_track_defaultsamplesize;
4201             }
4202
4203             i_traf_total_size += i_trun_size;
4204
4205             if ( i_traf_min_offset )
4206                 i_traf_min_offset = __MIN( i_trun_data_offset, i_traf_min_offset );
4207             else
4208                 i_traf_min_offset = i_trun_data_offset;
4209
4210             p_trun = p_trun->p_next;
4211         }
4212
4213         i_trafs_total_size += i_traf_total_size;
4214
4215         p_new->p_durations[i_durationindex].i_track_ID = BOXDATA(p_tfhd)->i_track_ID;
4216         p_new->p_durations[i_durationindex++].i_duration = i_traf_duration * p_sys->i_timescale / i_track_timescale;
4217
4218         p_traf = p_traf->p_next;
4219         i_traf++;
4220     }
4221
4222     p_new->i_chunk_range_min_offset = i_traf_min_offset;
4223     p_new->i_chunk_range_max_offset = i_traf_min_offset + i_trafs_total_size;
4224
4225     msg_Dbg( p_demux, "new fragment is %"PRId64" %"PRId64, p_new->i_chunk_range_min_offset, p_new->i_chunk_range_max_offset );
4226
4227     /* compute total duration with that new fragment if no overall provided */
4228     MP4_Box_t *p_mehd = MP4_BoxGet( p_sys->moovfragment.p_moox, "mvex/mehd");
4229     if ( !p_mehd )
4230     {
4231         if ( p_sys->b_fragments_probed )
4232            p_sys->i_overall_duration = SumFragmentsDurations( p_demux );
4233     }
4234     else
4235         p_sys->i_overall_duration = BOXDATA(p_mehd)->i_fragment_duration;
4236
4237     msg_Dbg( p_demux, "total fragments duration %"PRId64, CLOCK_FREQ * p_sys->i_overall_duration / p_sys->i_timescale );
4238     return true;
4239 }
4240
4241 static int ProbeIndex( demux_t *p_demux )
4242 {
4243     demux_sys_t *p_sys = p_demux->p_sys;
4244     uint64_t i_backup_pos, i_stream_size;
4245     uint8_t mfro[MP4_MFRO_BOXSIZE];
4246     assert( p_sys->b_seekable );
4247
4248     if ( MP4_BoxCount( p_sys->p_root, "/mfra" ) )
4249         return VLC_SUCCESS;
4250
4251     i_stream_size = stream_Size( p_demux->s );
4252     if ( ( i_stream_size >> 62 ) ||
4253          ( i_stream_size < MP4_MFRO_BOXSIZE ) ||
4254          ( !MP4_stream_Tell( p_demux->s, &i_backup_pos ) ) ||
4255          ( stream_Seek( p_demux->s, i_stream_size - MP4_MFRO_BOXSIZE ) != VLC_SUCCESS )
4256        )
4257     {
4258         msg_Dbg( p_demux, "Probing tail for mfro has failed" );
4259         return VLC_EGENERIC;
4260     }
4261
4262     if ( stream_Read( p_demux->s, &mfro, MP4_MFRO_BOXSIZE ) == MP4_MFRO_BOXSIZE &&
4263          VLC_FOURCC(mfro[4],mfro[5],mfro[6],mfro[7]) == ATOM_mfro &&
4264          GetDWBE( &mfro ) == MP4_MFRO_BOXSIZE )
4265     {
4266         uint32_t i_offset = GetDWBE( &mfro[12] );
4267         msg_Dbg( p_demux, "will read mfra index at %"PRIu64, i_stream_size - i_offset );
4268         if ( i_stream_size > i_offset &&
4269              stream_Seek( p_demux->s, i_stream_size - i_offset ) == VLC_SUCCESS )
4270         {
4271             msg_Dbg( p_demux, "reading mfra index at %"PRIu64, i_stream_size - i_offset );
4272             MP4_ReadBoxContainerChildren( p_demux->s, p_sys->p_root, ATOM_mfra );
4273         }
4274     }
4275
4276     return stream_Seek( p_demux->s, i_backup_pos );
4277 }
4278
4279 static int ProbeFragments( demux_t *p_demux, bool b_force )
4280 {
4281     demux_sys_t *p_sys = p_demux->p_sys;
4282     uint64_t i_current_pos;
4283
4284     if ( MP4_stream_Tell( p_demux->s, &i_current_pos ) )
4285         msg_Dbg( p_demux, "probing fragments from %"PRId64, i_current_pos );
4286
4287     assert( p_sys->p_root );
4288
4289     if ( p_sys->b_fastseekable || b_force )
4290     {
4291         MP4_ReadBoxContainerChildren( p_demux->s, p_sys->p_root, 0 ); /* Get the rest of the file */
4292         p_sys->b_fragments_probed = true;
4293     }
4294     else
4295     {
4296         /* We stop at first moof, which validates our fragmentation condition
4297          * and we'll find others while reading. */
4298         MP4_ReadBoxContainerChildren( p_demux->s, p_sys->p_root, ATOM_moof );
4299     }
4300
4301     if ( !p_sys->moovfragment.p_moox )
4302     {
4303         MP4_Box_t *p_moov = MP4_BoxGet( p_sys->p_root, "/moov" );
4304         if ( !p_moov )
4305         {
4306             /* moov/mvex before probing should be present anyway */
4307             MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
4308             return VLC_EGENERIC;
4309         }
4310         AddFragment( p_demux, p_moov );
4311     }
4312
4313     MP4_Box_t *p_moof = MP4_BoxGet( p_sys->p_root, "moof" );
4314     while ( p_moof )
4315     {
4316         if ( p_moof->i_type == ATOM_moof )
4317             AddFragment( p_demux, p_moof );
4318         p_moof = p_moof->p_next;
4319     }
4320
4321     MP4_Box_t *p_mdat = MP4_BoxGet( p_sys->p_root, "mdat" );
4322     if ( p_mdat )
4323     {
4324         stream_Seek( p_demux->s, p_mdat->i_pos );
4325         msg_Dbg( p_demux, "rewinding to mdat %"PRId64, p_mdat->i_pos );
4326     }
4327
4328     return VLC_SUCCESS;
4329 }
4330
4331 static mp4_fragment_t * GetFragmentByPos( demux_t *p_demux, uint64_t i_pos, bool b_exact )
4332 {
4333     mp4_fragment_t *p_fragment = &p_demux->p_sys->moovfragment;
4334     while ( p_fragment )
4335     {
4336         if ( i_pos <= p_fragment->i_chunk_range_max_offset &&
4337              ( !b_exact || i_pos >= p_fragment->i_chunk_range_min_offset ) )
4338         {
4339             msg_Dbg( p_demux, "fragment matched %"PRIu64" << %"PRIu64" << %"PRIu64,
4340                      p_fragment->i_chunk_range_min_offset, i_pos,
4341                      p_fragment->i_chunk_range_max_offset );
4342             return p_fragment;
4343         }
4344         else
4345         {
4346             p_fragment = p_fragment->p_next;
4347         }
4348     }
4349     return NULL;
4350 }
4351
4352 /* Get a matching fragment data start by clock time */
4353 static mp4_fragment_t * GetFragmentByTime( demux_t *p_demux, const mtime_t i_time )
4354 {
4355     demux_sys_t *p_sys = p_demux->p_sys;
4356     mp4_fragment_t *p_fragment = &p_sys->moovfragment;
4357     mtime_t i_base_time = 0;
4358     mtime_t *pi_tracks_duration_total = calloc( p_sys->i_tracks, sizeof(mtime_t) );
4359     while ( p_fragment && pi_tracks_duration_total )
4360     {
4361         if ( p_fragment == &p_sys->moovfragment &&
4362              p_fragment->i_chunk_range_max_offset == 0 )
4363         {
4364             p_fragment = p_fragment->p_next;
4365             continue;
4366         }
4367
4368         mtime_t i_length = 0;
4369         for( unsigned int i=0; i<p_sys->i_tracks; i++ )
4370         {
4371             mtime_t i_track_duration = GetTrackDurationInFragment( p_fragment,
4372                                                                    p_sys->track[i].i_track_ID );
4373             pi_tracks_duration_total[i] += i_track_duration;
4374             i_length = __MAX(i_length, i_track_duration);
4375         }
4376
4377         i_length = i_length * CLOCK_FREQ / p_demux->p_sys->i_timescale; /* movie scale to time */
4378         if ( i_time >= i_base_time &&
4379              i_time <= i_base_time + i_length )
4380         {
4381             return p_fragment;
4382         }
4383         else
4384         {
4385             i_base_time += i_length;
4386             p_fragment = p_fragment->p_next;
4387         }
4388
4389         if ( !p_demux->p_sys->b_fragments_probed )
4390             break; /* We have no way to guess missing fragments time */
4391     }
4392     free( pi_tracks_duration_total );
4393     return NULL;
4394 }
4395
4396 /* Returns fragment scaled time offset */
4397 static mtime_t LeafGetTrackFragmentTimeOffset( demux_t *p_demux, mp4_fragment_t *p_fragment,
4398                                                unsigned int i_track_ID )
4399 {
4400     mtime_t i_base_scaledtime = 0;
4401     mp4_fragment_t *p_current = &p_demux->p_sys->moovfragment;
4402     while ( p_current != p_fragment )
4403     {
4404         if ( p_current != &p_demux->p_sys->moovfragment ||
4405              p_current->i_chunk_range_max_offset )
4406         {
4407             i_base_scaledtime += GetTrackDurationInFragment( p_current, i_track_ID );
4408         }
4409         p_current = p_current->p_next;
4410     }
4411     return i_base_scaledtime;
4412 }
4413
4414 static int LeafParseTRUN( demux_t *p_demux, mp4_track_t *p_track,
4415                       const uint32_t i_defaultduration, const uint32_t i_defaultsize,
4416                       const MP4_Box_data_trun_t *p_trun, uint32_t * const pi_mdatlen )
4417 {
4418     assert( p_trun->i_sample_count );
4419     msg_Dbg( p_demux, "Default sample duration %"PRIu32" size %"PRIu32" firstdts %"PRIu64,
4420              i_defaultduration, i_defaultsize, p_track->i_first_dts );
4421
4422     uint32_t dur = 0, len;
4423     uint32_t chunk_size = 0;
4424     mtime_t i_nzdts = CLOCK_FREQ * p_track->i_time / p_track->i_timescale;
4425
4426     mtime_t i_nzpts;
4427
4428     for( uint32_t i = 0; i < p_trun->i_sample_count; i++)
4429     {
4430         i_nzdts += CLOCK_FREQ * dur / p_track->i_timescale;
4431         i_nzpts = i_nzdts;
4432
4433         if( p_trun->i_flags & MP4_TRUN_SAMPLE_DURATION )
4434             dur = p_trun->p_samples[i].i_duration;
4435         else
4436             dur = i_defaultduration;
4437
4438         p_track->i_time += dur;
4439
4440         if( p_trun->i_flags & MP4_TRUN_SAMPLE_TIME_OFFSET )
4441         {
4442             if ( p_trun->i_version == 1 )
4443                 i_nzpts += CLOCK_FREQ * (int32_t) p_trun->p_samples[i].i_composition_time_offset / p_track->i_timescale;
4444             else
4445                 i_nzpts += CLOCK_FREQ * p_trun->p_samples[i].i_composition_time_offset / p_track->i_timescale;
4446         }
4447
4448         if( p_trun->i_flags & MP4_TRUN_SAMPLE_SIZE )
4449             len = p_trun->p_samples[i].i_size;
4450         else
4451             len = i_defaultsize;
4452
4453         if(!dur)
4454             msg_Warn(p_demux, "Zero duration sample in trun.");
4455
4456         if(!len)
4457             msg_Warn(p_demux, "Zero length sample in trun.");
4458
4459         if ( chunk_size + len > *pi_mdatlen )
4460         {
4461             /* update data left in mdat */
4462             *pi_mdatlen -= chunk_size;
4463             return VLC_EGENERIC;
4464         }
4465
4466         block_t *p_block = MP4_Block_Read( p_demux, p_track, __MIN( len, INT32_MAX ) );
4467         uint32_t i_read = ( p_block ) ? p_block->i_buffer : 0;
4468         if( i_read < len )
4469         {
4470             /* update data left in mdat */
4471             *pi_mdatlen -= chunk_size;
4472             *pi_mdatlen -= i_read;
4473             free( p_block );
4474             return VLC_EGENERIC;
4475         }
4476
4477         if ( p_demux->p_sys->i_pcr < VLC_TS_0 )
4478         {
4479             p_demux->p_sys->i_pcr = i_nzdts;
4480             es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + i_nzdts );
4481         }
4482
4483         if ( p_track->p_es )
4484         {
4485             p_block->i_dts = VLC_TS_0 + i_nzdts;
4486             p_block->i_pts = VLC_TS_0 + i_nzpts;
4487             p_block->i_length = CLOCK_FREQ * dur / p_track->i_timescale;
4488             MP4_Block_Send( p_demux, p_track, p_block );
4489         }
4490         else free( p_block );
4491
4492         chunk_size += len;
4493     }
4494
4495     /* update data left in mdat */
4496     *pi_mdatlen -= chunk_size;
4497     return VLC_SUCCESS;
4498 }
4499
4500 static int LeafGetTrackAndChunkByMOOVPos( demux_t *p_demux, uint64_t *pi_pos,
4501                                       mp4_track_t **pp_tk, unsigned int *pi_chunk )
4502 {
4503     const demux_sys_t *p_sys = p_demux->p_sys;
4504
4505     mp4_track_t *p_tk_closest = NULL;
4506     uint64_t i_closest = UINT64_MAX;
4507     unsigned int i_chunk_closest;
4508
4509     *pp_tk = NULL;
4510
4511     for ( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
4512     {
4513         for( unsigned int i_chunk = 0; i_chunk < p_sys->track[i_track].i_chunk_count; i_chunk++ )
4514         {
4515             if ( p_sys->track[i_track].chunk[i_chunk].i_offset > *pi_pos )
4516             {
4517                 i_closest = __MIN( i_closest, p_sys->track[i_track].chunk[i_chunk].i_offset );
4518                 p_tk_closest = &p_sys->track[i_track];
4519                 i_chunk_closest = i_chunk;
4520             }
4521
4522             if ( *pi_pos == p_sys->track[i_track].chunk[i_chunk].i_offset )
4523             {
4524                 *pp_tk = &p_sys->track[i_track];
4525                 *pi_chunk = i_chunk;
4526                 return VLC_SUCCESS;
4527             }
4528         }
4529     }
4530
4531     if ( i_closest != UINT64_MAX )
4532     {
4533         *pi_pos = i_closest;
4534         *pp_tk = p_tk_closest;
4535         *pi_chunk = i_chunk_closest;
4536         return VLC_ENOOBJ;
4537     }
4538     else return VLC_EGENERIC;
4539 }
4540
4541 static int LeafMOOVGetSamplesSize( const mp4_track_t *p_track, const uint32_t i_sample,
4542                            uint32_t *pi_samplestoread, uint32_t *pi_samplessize,
4543                            const uint32_t i_maxbytes, const uint32_t i_maxsamples )
4544 {
4545     MP4_Box_t *p_stsz = MP4_BoxGet( p_track->p_stbl, "stsz" );
4546     if ( !p_stsz )
4547         return VLC_EGENERIC;
4548
4549     if ( BOXDATA(p_stsz)->i_sample_size == 0 )
4550     {
4551         uint32_t i_entry = i_sample;
4552         uint32_t i_totalbytes = 0;
4553         *pi_samplestoread = 1;
4554
4555         if ( i_sample >= BOXDATA(p_stsz)->i_sample_count )
4556             return VLC_EGENERIC;
4557
4558         *pi_samplessize = BOXDATA(p_stsz)->i_entry_size[i_sample];
4559         i_totalbytes += *pi_samplessize;
4560
4561         if ( *pi_samplessize > i_maxbytes )
4562             return VLC_EGENERIC;
4563
4564         i_entry++;
4565         while( i_entry < BOXDATA(p_stsz)->i_sample_count &&
4566                *pi_samplessize == BOXDATA(p_stsz)->i_entry_size[i_entry] &&
4567                i_totalbytes + *pi_samplessize < i_maxbytes &&
4568                *pi_samplestoread < i_maxsamples
4569               )
4570         {
4571             i_totalbytes += *pi_samplessize;
4572             (*pi_samplestoread)++;
4573         }
4574
4575         *pi_samplessize = i_totalbytes;
4576     }
4577     else
4578     {
4579         /* all samples have same size */
4580         *pi_samplessize = BOXDATA(p_stsz)->i_sample_size;
4581         *pi_samplestoread = __MIN( i_maxsamples, BOXDATA(p_stsz)->i_sample_count );
4582         *pi_samplestoread = __MIN( i_maxbytes / *pi_samplessize, *pi_samplestoread );
4583         *pi_samplessize = *pi_samplessize * *pi_samplestoread;
4584     }
4585
4586     return VLC_SUCCESS;
4587 }
4588
4589 static inline mtime_t LeafGetMOOVTimeInChunk( const mp4_chunk_t *p_chunk, uint32_t i_sample )
4590 {
4591     mtime_t i_time = 0;
4592     uint32_t i_index = 0;
4593
4594     while( i_sample > 0 )
4595     {
4596         if( i_sample > p_chunk->p_sample_count_dts[i_index] )
4597         {
4598             i_time += p_chunk->p_sample_count_dts[i_index] *
4599                 p_chunk->p_sample_delta_dts[i_index];
4600             i_sample -= p_chunk->p_sample_count_dts[i_index];
4601             i_index++;
4602         }
4603         else
4604         {
4605             i_time += i_sample * p_chunk->p_sample_delta_dts[i_index];
4606             break;
4607         }
4608     }
4609
4610     return i_time;
4611 }
4612
4613 static int LeafParseMDATwithMOOV( demux_t *p_demux )
4614 {
4615     demux_sys_t *p_sys = p_demux->p_sys;
4616
4617     assert( p_sys->context.i_current_box_type == ATOM_mdat );
4618     assert( p_sys->context.p_fragment->p_moox->i_type == ATOM_moov );
4619
4620     uint64_t i_current_pos;
4621     if ( !MP4_stream_Tell( p_demux->s, &i_current_pos ) )
4622         return VLC_EGENERIC;
4623
4624     if ( p_sys->context.i_mdatbytesleft == 0 ) /* Start parsing new mdat */
4625     {
4626         /* Ready mdat section */
4627         uint8_t mdat[8];
4628         int i_read = stream_Read( p_demux->s, &mdat, 8 );
4629         p_sys->context.i_mdatbytesleft = GetDWBE( mdat );
4630         if ( i_read < 8 || p_sys->context.i_mdatbytesleft < 8 ||
4631              VLC_FOURCC( mdat[4], mdat[5], mdat[6], mdat[7] ) != ATOM_mdat )
4632         {
4633             uint64_t i_pos;
4634             if ( !MP4_stream_Tell( p_demux->s, &i_pos ) )
4635                 msg_Err( p_demux, "No mdat atom at %"PRIu64, i_pos - __MAX( 0, i_read ) );
4636             return VLC_EGENERIC;
4637         }
4638         i_current_pos += 8;
4639         p_sys->context.i_mdatbytesleft -= 8;
4640     }
4641
4642     while( p_sys->context.i_mdatbytesleft > 0 )
4643     {
4644         mp4_track_t *p_track;
4645         unsigned int i_chunk;
4646
4647         /**/
4648         uint64_t i_pos = i_current_pos;
4649         int i_ret = LeafGetTrackAndChunkByMOOVPos( p_demux, &i_pos, &p_track, &i_chunk );
4650         if ( i_ret == VLC_EGENERIC )
4651         {
4652             msg_Err(p_demux, "can't find referenced chunk for start at %"PRIu64, i_current_pos );
4653             goto error;
4654         }
4655         else if( i_ret == VLC_ENOOBJ )
4656         {
4657             assert( i_pos - i_current_pos > p_sys->context.i_mdatbytesleft );
4658             int i_read = stream_Read( p_demux->s, NULL, i_pos - i_current_pos );
4659             i_current_pos += i_read;
4660             p_sys->context.i_mdatbytesleft -= i_read;
4661             if ( i_read == 0 ) goto error;
4662             continue;
4663         }
4664         /**/
4665
4666         mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
4667
4668         uint32_t i_nb_samples_at_chunk_start = p_chunk->i_sample_first;
4669         uint32_t i_nb_samples_in_chunk = p_chunk->i_sample_count;
4670
4671         assert(i_nb_samples_in_chunk);
4672
4673         uint32_t i_nb_samples = 0;
4674         while ( i_nb_samples < i_nb_samples_in_chunk )
4675         {
4676             uint32_t i_samplessize = 0;
4677             uint32_t i_samplescounttoread = 0;
4678             i_ret = LeafMOOVGetSamplesSize( p_track,
4679                             i_nb_samples_at_chunk_start + i_nb_samples,
4680                             &i_samplescounttoread, &i_samplessize,
4681                             p_sys->context.i_mdatbytesleft,
4682                             /*i_nb_samples_in_chunk - i_nb_samples*/ 1 );
4683             if ( i_ret != VLC_SUCCESS )
4684                 goto error;
4685
4686             if( p_sys->context.i_mdatbytesleft &&
4687                 p_sys->context.i_mdatbytesleft  >= i_samplessize )
4688             {
4689                 block_t *p_block;
4690
4691                 /* now read pes */
4692
4693                 if( !(p_block = MP4_Block_Read( p_demux, p_track, i_samplessize )) )
4694                 {
4695                     uint64_t i_pos;
4696                     if ( MP4_stream_Tell( p_demux->s, &i_pos ) )
4697                     {
4698                         p_sys->context.i_mdatbytesleft -= ( i_pos - i_current_pos );
4699                         msg_Err( p_demux, "stream block error %"PRId64" %"PRId64, i_pos, i_pos - i_current_pos );
4700                     }
4701                     goto error;
4702                 }
4703
4704                 i_nb_samples += i_samplescounttoread;
4705                 i_current_pos += i_samplessize;
4706                 p_sys->context.i_mdatbytesleft -= i_samplessize;
4707
4708                 /* dts */
4709                 mtime_t i_time = LeafGetMOOVTimeInChunk( p_chunk, i_nb_samples );
4710                 i_time += p_chunk->i_first_dts;
4711                 p_track->i_time = i_time;
4712                 p_block->i_dts = VLC_TS_0 + CLOCK_FREQ * i_time / p_track->i_timescale;
4713
4714                 /* pts */
4715                 int64_t i_delta;
4716                 if( MP4_TrackGetPTSDelta( p_demux, p_track, &i_delta ) )
4717                     p_block->i_pts = p_block->i_dts + i_delta;
4718                 else if( p_track->fmt.i_cat != VIDEO_ES )
4719                     p_block->i_pts = p_block->i_dts;
4720                 else
4721                     p_block->i_pts = VLC_TS_INVALID;
4722
4723                 MP4_Block_Send( p_demux, p_track, p_block );
4724
4725                 if ( p_demux->p_sys->i_pcr < VLC_TS_0 )
4726                 {
4727                     p_sys->i_time = p_track->i_time * p_sys->i_timescale / p_track->i_timescale;
4728                     p_demux->p_sys->i_pcr = MP4_GetMoviePTS( p_demux->p_sys );
4729                     es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_demux->p_sys->i_pcr );
4730                 }
4731
4732             }
4733             else
4734             {
4735                 // sample size > left bytes
4736                 break;
4737             }
4738
4739             p_track->i_sample += i_samplescounttoread;
4740         }
4741
4742         /* flag end of mdat section if needed */
4743         if ( p_sys->context.i_mdatbytesleft == 0 )
4744             p_sys->context.i_current_box_type = 0;
4745
4746         // next chunk
4747         return VLC_SUCCESS;
4748     }
4749
4750 error:
4751     /* Skip if we didn't reach the end of mdat box */
4752     if ( p_sys->context.i_mdatbytesleft  > 0 )
4753     {
4754         msg_Err( p_demux, "mdat had still %"PRIu32" bytes unparsed as samples",
4755                  p_sys->context.i_mdatbytesleft );
4756         stream_ReadU32( p_demux->s, NULL, p_sys->context.i_mdatbytesleft );
4757     }
4758     p_sys->context.i_current_box_type = 0;
4759
4760     return VLC_SUCCESS;
4761 }
4762
4763 static mp4_track_t * LeafGetTrackByTrunPos( demux_t *p_demux, const uint64_t i_pos, const uint64_t i_moofpos )
4764 {
4765     demux_sys_t *p_sys = p_demux->p_sys;
4766
4767     for ( uint32_t i=0; i<p_sys->i_tracks; i++ )
4768     {
4769         mp4_track_t *p_track = &p_sys->track[i];
4770         if ( !p_track->context.p_trun || !p_track->context.p_tfhd )
4771             continue;
4772         const MP4_Box_data_trun_t *p_trun_data = p_track->context.BOXDATA(p_trun);
4773         uint64_t i_offset = 0;
4774
4775         if ( p_track->context.BOXDATA(p_tfhd)->i_flags & MP4_TFHD_BASE_DATA_OFFSET )
4776             i_offset = p_track->context.BOXDATA(p_tfhd)->i_base_data_offset;
4777         else
4778             i_offset = i_moofpos;
4779
4780         //if ( p_track->context.BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DEFAULT_BASE_IS_MOOF )
4781           //  i_offset += i_moofpos;
4782
4783         if (p_trun_data->i_flags & MP4_TRUN_DATA_OFFSET)
4784             i_offset += p_trun_data->i_data_offset;
4785         else
4786             return p_track;
4787
4788         if ( i_offset == i_pos )
4789             return p_track;
4790     }
4791
4792     return NULL;
4793 }
4794
4795 static int LeafMapTrafTrunContextes( demux_t *p_demux, MP4_Box_t *p_moof )
4796 {
4797     demux_sys_t *p_sys = p_demux->p_sys;
4798
4799     /* reset */
4800     for ( uint32_t i=0; i<p_sys->i_tracks; i++ )
4801     {
4802         mp4_track_t *p_track = &p_sys->track[i];
4803         p_track->context.p_tfhd = NULL;
4804         p_track->context.p_traf = NULL;
4805         p_track->context.p_trun = NULL;
4806     }
4807
4808     if ( p_moof->i_type == ATOM_moov )
4809         return VLC_SUCCESS;
4810
4811     MP4_Box_t *p_traf = MP4_BoxGet( p_moof, "traf" );
4812     if( !p_traf )
4813     {
4814         msg_Warn( p_demux, "no traf box found!" );
4815         return VLC_EGENERIC;
4816     }
4817
4818     /* map contexts */
4819     while ( p_traf )
4820     {
4821         if ( p_traf->i_type == ATOM_traf )
4822         {
4823             MP4_Box_t *p_tfhd = MP4_BoxGet( p_traf, "tfhd" );
4824             for ( uint32_t i=0; p_tfhd && i<p_sys->i_tracks; i++ )
4825             {
4826                 mp4_track_t *p_track = &p_sys->track[i];
4827                 if ( BOXDATA(p_tfhd)->i_track_ID == p_track->i_track_ID )
4828                 {
4829                     MP4_Box_t *p_trun = MP4_BoxGet( p_traf, "trun" );
4830                     if ( p_trun )
4831                     {
4832                         p_track->context.p_tfhd = p_tfhd;
4833                         p_track->context.p_traf = p_traf;
4834                         p_track->context.p_trun = p_trun;
4835                     }
4836                     p_tfhd = NULL; /* break loop */
4837                 }
4838             }
4839         }
4840         p_traf = p_traf->p_next;
4841     }
4842
4843     return VLC_SUCCESS;
4844 }
4845
4846 static int LeafIndexGetMoofPosByTime( demux_t *p_demux, const mtime_t i_target_time,
4847                                       uint64_t *pi_pos, mtime_t *pi_mooftime )
4848 {
4849     MP4_Box_t *p_tfra = MP4_BoxGet( p_demux->p_sys->p_root, "mfra/tfra" );
4850     while ( p_tfra )
4851     {
4852         if ( p_tfra->i_type == ATOM_tfra )
4853         {
4854             int64_t i_pos = -1;
4855             const MP4_Box_data_tfra_t *p_data = BOXDATA(p_tfra);
4856             mp4_track_t *p_track = MP4_frg_GetTrackByID( p_demux, p_data->i_track_ID );
4857             if ( p_track && (p_track->fmt.i_cat == AUDIO_ES || p_track->fmt.i_cat == VIDEO_ES) )
4858             {
4859                 for ( uint32_t i = 0; i<p_data->i_number_of_entries; i += ( p_data->i_version == 1 ) ? 2 : 1 )
4860                 {
4861                     mtime_t i_time;
4862                     uint64_t i_offset;
4863                     if ( p_data->i_version == 1 )
4864                     {
4865                         i_time = *((uint64_t *)(p_data->p_time + i));
4866                         i_offset = *((uint64_t *)(p_data->p_moof_offset + i));
4867                     }
4868                     else
4869                     {
4870                         i_time = p_data->p_time[i];
4871                         i_offset = p_data->p_moof_offset[i];
4872                     }
4873
4874                     if ( CLOCK_FREQ * i_time / p_track->i_timescale >= i_target_time )
4875                     {
4876                         if ( i_pos == -1 ) /* Not in this traf */
4877                             break;
4878
4879                         *pi_pos = (uint64_t) i_pos;
4880                         *pi_mooftime = CLOCK_FREQ * i_time / p_track->i_timescale;
4881                         if ( p_track->fmt.i_cat == AUDIO_ES )
4882                             *pi_mooftime -= CLOCK_FREQ / p_track->fmt.audio.i_rate * p_data->p_sample_number[i];
4883                         else
4884                             *pi_mooftime -= CLOCK_FREQ / p_demux->p_sys->f_fps * p_data->p_sample_number[i];
4885                         return VLC_SUCCESS;
4886                     }
4887                     else
4888                         i_pos = i_offset;
4889                 }
4890             }
4891         }
4892         p_tfra = p_tfra->p_next;
4893     }
4894     return VLC_EGENERIC;
4895 }
4896
4897 static void MP4_GetDefaultSizeAndDuration( demux_t *p_demux,
4898                                            const MP4_Box_data_tfhd_t *p_tfhd_data,
4899                                            uint32_t *pi_default_size,
4900                                            uint32_t *pi_default_duration )
4901 {
4902     if( p_tfhd_data->i_flags & MP4_TFHD_DFLT_SAMPLE_DURATION )
4903         *pi_default_duration = p_tfhd_data->i_default_sample_duration;
4904
4905     if( p_tfhd_data->i_flags & MP4_TFHD_DFLT_SAMPLE_SIZE )
4906         *pi_default_size = p_tfhd_data->i_default_sample_size;
4907
4908     if( !*pi_default_duration || !*pi_default_size )
4909     {
4910         const MP4_Box_t *p_trex = MP4_GetTrexByTrackID(
4911                     MP4_BoxGet( p_demux->p_sys->p_root, "moov" ),
4912                     p_tfhd_data->i_track_ID );
4913         if ( p_trex )
4914         {
4915             if ( !*pi_default_duration )
4916                 *pi_default_duration = BOXDATA(p_trex)->i_default_sample_duration;
4917             if ( !*pi_default_size )
4918                 *pi_default_size = BOXDATA(p_trex)->i_default_sample_size;
4919         }
4920     }
4921 }
4922
4923 static int LeafParseMDATwithMOOF( demux_t *p_demux, MP4_Box_t *p_moof )
4924 {
4925     demux_sys_t *p_sys = p_demux->p_sys;
4926     uint64_t i_pos;
4927     assert( p_moof->i_type == ATOM_moof );
4928     assert( p_sys->context.i_current_box_type == ATOM_mdat );
4929
4930     if ( p_sys->context.i_mdatbytesleft == 0 )
4931     {
4932         int i_ret = LeafMapTrafTrunContextes( p_demux, p_moof );
4933         if ( i_ret != VLC_SUCCESS )
4934             return i_ret;
4935
4936         /* Ready mdat section */
4937         uint8_t mdat[8];
4938         int i_read = stream_Read( p_demux->s, &mdat, 8 );
4939         p_sys->context.i_mdatbytesleft = GetDWBE( mdat );
4940         if ( i_read < 8 || p_sys->context.i_mdatbytesleft < 8 ||
4941              VLC_FOURCC( mdat[4], mdat[5], mdat[6], mdat[7] ) != ATOM_mdat )
4942         {
4943             if ( MP4_stream_Tell( p_demux->s, &i_pos ) )
4944                 msg_Err(p_demux, "No mdat atom at %"PRIu64, i_pos - i_read );
4945             return VLC_EGENERIC;
4946         }
4947         p_sys->context.i_mdatbytesleft -= 8;
4948     }
4949
4950     if ( !MP4_stream_Tell( p_demux->s, &i_pos ) )
4951         return VLC_EGENERIC;
4952     if ( p_sys->b_smooth )
4953         i_pos -= p_moof->i_pos;
4954     mp4_track_t *p_track = LeafGetTrackByTrunPos( p_demux, i_pos, p_moof->i_pos );
4955     if( p_track )
4956     {
4957         uint32_t i_trun_sample_default_duration = 0;
4958         uint32_t i_trun_sample_default_size = 0;
4959
4960         if ( p_track->context.p_trun )
4961         {
4962             /* Get defaults for this/these RUN */
4963             const MP4_Box_data_tfhd_t *p_tfhd_data = p_track->context.BOXDATA(p_tfhd);
4964             MP4_GetDefaultSizeAndDuration( p_demux, p_tfhd_data,
4965                                            &i_trun_sample_default_size,
4966                                            &i_trun_sample_default_duration );
4967
4968             const MP4_Box_data_trun_t *p_trun_data = p_track->context.BOXDATA(p_trun);
4969
4970            /* NOW PARSE TRUN WITH MDAT */
4971             int i_ret = LeafParseTRUN( p_demux, p_track,
4972                                    i_trun_sample_default_duration, i_trun_sample_default_size,
4973                                    p_trun_data, & p_sys->context.i_mdatbytesleft );
4974             if ( i_ret != VLC_SUCCESS )
4975                 goto end;
4976
4977             p_track->context.p_trun = p_track->context.p_trun->p_next;
4978         }
4979
4980         if ( p_sys->context.i_mdatbytesleft == 0 )
4981             p_sys->context.i_current_box_type = 0;
4982         return VLC_SUCCESS;
4983     }
4984
4985 end:
4986     /* Skip if we didn't reach the end of mdat box */
4987     if ( p_sys->context.i_mdatbytesleft > 0 )
4988     {
4989         msg_Warn( p_demux, "mdat had still %"PRIu32" bytes unparsed as samples", p_sys->context.i_mdatbytesleft - 8 );
4990         stream_ReadU32( p_demux->s, NULL, p_sys->context.i_mdatbytesleft );
4991     }
4992
4993     p_sys->context.i_current_box_type = 0;
4994
4995     return VLC_SUCCESS;
4996 }
4997
4998 static int DemuxAsLeaf( demux_t *p_demux )
4999 {
5000     demux_sys_t *p_sys = p_demux->p_sys;
5001     unsigned i_track_selected = 0;
5002
5003     /* check for newly selected/unselected track */
5004     for( unsigned i_track = 0; i_track < p_sys->i_tracks; i_track++ )
5005     {
5006         mp4_track_t *tk = &p_sys->track[i_track];
5007         bool b;
5008
5009         if( !tk->b_ok || tk->b_chapter )
5010             continue;
5011
5012         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
5013         msg_Dbg( p_demux, "track %u %s!", tk->i_track_ID, b ? "enabled" : "disabled" );
5014
5015         if( tk->b_selected && !b )
5016             MP4_TrackUnselect( p_demux, tk );
5017         else if( !tk->b_selected && b)
5018             MP4_frg_TrackSelect( p_demux, tk );
5019
5020         if( tk->b_selected )
5021             i_track_selected++;
5022     }
5023
5024     if( i_track_selected <= 0 )
5025     {
5026         msg_Warn( p_demux, "no track selected, exiting..." );
5027         return 0;
5028     }
5029
5030     if ( p_sys->context.i_current_box_type != ATOM_mdat )
5031     {
5032         /* Othewise mdat is skipped. FIXME: mdat reading ! */
5033         const uint8_t *p_peek;
5034         int i_read  = stream_Peek( p_demux->s, &p_peek, 8 );
5035         if ( i_read < 8 )
5036             return 0;
5037
5038         p_sys->context.i_current_box_type = VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] );
5039
5040         if ( p_sys->context.i_current_box_type != ATOM_mdat )
5041         {
5042             if ( ! BoxExistsInRootTree( p_sys->p_root, p_sys->context.i_current_box_type, stream_Tell( p_demux->s ) ) )
5043             {// only if !b_probed ??
5044                 MP4_Box_t *p_vroot = LoadNextChunk( p_demux );
5045
5046                 MP4_Box_t *p_fragbox = MP4_BoxGet( p_vroot, "moof" );
5047                 if( !p_fragbox )
5048                     p_fragbox = MP4_BoxGet( p_vroot, "moov" );
5049
5050                 if(!p_fragbox)
5051                 {
5052                     MP4_BoxFree( p_demux->s, p_vroot );
5053                     msg_Err(p_demux, "no moof or moov in current chunk");
5054                     return 1;
5055                 }
5056
5057                 MP4_Box_t *p_mfhd = MP4_BoxGet( p_fragbox, "mfhd" );
5058                 if( p_mfhd && BOXDATA(p_mfhd) )
5059                 {
5060                     /* Detect and Handle Passive Seek */
5061                     if( p_sys->context.i_lastseqnumber + 1 != BOXDATA(p_mfhd)->i_sequence_number )
5062                     {
5063                         msg_Info( p_demux, "Fragment sequence discontinuity detected %"PRIu32" != %"PRIu32,
5064                                   BOXDATA(p_mfhd)->i_sequence_number, p_sys->context.i_lastseqnumber + 1 );
5065                         MP4_Box_t *p_sidx = MP4_BoxGet( p_vroot, "sidx" );
5066                         if( p_sidx && BOXDATA(p_sidx) && BOXDATA(p_sidx)->i_timescale )
5067                         {
5068                             mtime_t i_time_base = BOXDATA(p_sidx)->i_earliest_presentation_time;
5069
5070                             for( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
5071                             {
5072                                 p_sys->track[i_track].i_time = i_time_base * p_sys->track[i_track].i_timescale
5073                                                                            / BOXDATA(p_sidx)->i_timescale;
5074                             }
5075
5076                             p_sys->i_time = i_time_base * p_sys->i_timescale / BOXDATA(p_sidx)->i_timescale;
5077                             p_sys->i_pcr  = VLC_TS_INVALID;
5078                         }
5079                     }
5080                     p_sys->context.i_lastseqnumber = BOXDATA(p_mfhd)->i_sequence_number;
5081                 }
5082
5083                 /* detach */
5084                 while( p_vroot->p_first )
5085                 {
5086                     if( p_vroot->p_first == p_fragbox )
5087                     {
5088                         p_vroot->p_first = p_fragbox->p_next;
5089                     }
5090                     else
5091                     {
5092                         MP4_Box_t *p_cur = p_vroot->p_first;
5093                         p_vroot->p_first = p_cur->p_next;
5094                         p_cur->p_next = NULL;
5095                         msg_Dbg(p_demux, "ignoring box %4.4s", (char*)&p_cur->i_type);
5096                         MP4_BoxFree( p_demux->s, p_cur );
5097                     }
5098                 }
5099                 p_fragbox->p_next = NULL;
5100
5101                 /* create fragment */
5102                 AddFragment( p_demux, p_fragbox );
5103
5104                 /* Append to root */
5105                 p_sys->p_root->p_last->p_next = p_fragbox;
5106                 p_sys->p_root->p_last = p_fragbox;
5107                 MP4_BoxFree( p_demux->s, p_vroot );
5108             }
5109             else
5110             {
5111                 /* Skip */
5112                 msg_Err( p_demux, "skipping known chunk type %4.4s size %"PRIu32, (char*)& p_sys->context.i_current_box_type, GetDWBE( p_peek ) );
5113                 stream_Read( p_demux->s, NULL, GetDWBE( p_peek ) );
5114             }
5115         }
5116         else
5117         {
5118             /* skip mdat header */
5119             p_sys->context.p_fragment = GetFragmentByPos( p_demux,
5120                                        stream_Tell( p_demux->s ) + 8, true );
5121         }
5122
5123     }
5124
5125     if ( p_sys->context.i_current_box_type == ATOM_mdat )
5126     {
5127         assert(p_sys->context.p_fragment);
5128         if ( p_sys->context.p_fragment )
5129         switch( p_sys->context.p_fragment->p_moox->i_type )
5130         {
5131             case ATOM_moov://[ftyp/moov, mdat]+ -> [moof, mdat]+
5132                 LeafParseMDATwithMOOV( p_demux );
5133             break;
5134             case ATOM_moof:
5135                 LeafParseMDATwithMOOF( p_demux, p_sys->context.p_fragment->p_moox ); // BACKUP CHUNK!
5136             break;
5137         default:
5138              msg_Err( p_demux, "fragment type %4.4s", (char*) &p_sys->context.p_fragment->p_moox->i_type );
5139              break;
5140         }
5141     }
5142
5143     /* Get current time */
5144     mtime_t i_lowest_dts = VLC_TS_INVALID;
5145     mtime_t i_lowest_time = INT64_MAX;
5146     for( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
5147     {
5148         const mp4_track_t *p_track = &p_sys->track[i_track];
5149         if( !p_track->b_selected || ( p_track->fmt.i_cat != VIDEO_ES && p_track->fmt.i_cat != AUDIO_ES ) )
5150             continue;
5151
5152         i_lowest_time = __MIN( i_lowest_time, p_track->i_time * p_sys->i_timescale / p_track->i_timescale );
5153
5154         if ( i_lowest_dts == VLC_TS_INVALID )
5155             i_lowest_dts = CLOCK_FREQ * p_track->i_time / p_track->i_timescale;
5156         else
5157             i_lowest_dts = __MIN( i_lowest_dts, CLOCK_FREQ * p_track->i_time / p_track->i_timescale );
5158     }
5159
5160     p_sys->i_time = i_lowest_time;
5161     p_sys->i_pcr = i_lowest_dts;
5162     es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
5163
5164     return 1;
5165 }
5166
5167 /* ASF Handlers */
5168 inline static mp4_track_t *MP4ASF_GetTrack( asf_packet_sys_t *p_packetsys,
5169                                             uint8_t i_stream_number )
5170 {
5171     demux_sys_t *p_sys = p_packetsys->p_demux->p_sys;
5172     for ( unsigned int i=0; i<p_sys->i_tracks; i++ )
5173     {
5174         if ( p_sys->track[i].p_asf &&
5175              i_stream_number == p_sys->track[i].BOXDATA(p_asf)->i_stream_number )
5176         {
5177             return &p_sys->track[i];
5178         }
5179     }
5180     return NULL;
5181 }
5182
5183 static asf_track_info_t * MP4ASF_GetTrackInfo( asf_packet_sys_t *p_packetsys,
5184                                                uint8_t i_stream_number )
5185 {
5186     mp4_track_t *p_track = MP4ASF_GetTrack( p_packetsys, i_stream_number );
5187     if ( p_track )
5188         return &p_track->asfinfo;
5189     else
5190         return NULL;
5191 }
5192
5193 static void MP4ASF_Send( asf_packet_sys_t *p_packetsys, uint8_t i_stream_number,
5194                          block_t **pp_frame )
5195 {
5196     mp4_track_t *p_track = MP4ASF_GetTrack( p_packetsys, i_stream_number );
5197     if ( !p_track )
5198     {
5199         block_Release( *pp_frame );
5200     }
5201     else
5202     {
5203         block_t *p_gather = block_ChainGather( *pp_frame );
5204         p_gather->i_dts = p_track->i_dts_backup;
5205         p_gather->i_pts = p_track->i_pts_backup;
5206         es_out_Send( p_packetsys->p_demux->out, p_track->p_es, p_gather );
5207     }
5208
5209     *pp_frame = NULL;
5210 }
5211
5212 static void MP4ASF_ResetFrames( demux_sys_t *p_sys )
5213 {
5214     for ( unsigned int i=0; i<p_sys->i_tracks; i++ )
5215     {
5216         mp4_track_t *p_track = &p_sys->track[i];
5217         if( p_track->asfinfo.p_frame )
5218         {
5219             block_ChainRelease( p_track->asfinfo.p_frame );
5220             p_track->asfinfo.p_frame = NULL;
5221         }
5222     }
5223 }
5224
5225 #undef BOXDATA