git.sesse.net Git - vlc/blob - modules/demux/mkv/matroska_segment.hpp

   1 /*****************************************************************************
   2  * matroska_segment.hpp : matroska demuxer
   3  *****************************************************************************
   4  * Copyright (C) 2003-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Steve Lhomme <steve.lhomme@free.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #ifndef _MATROSKA_SEGMENT_HPP_
  26 #define _MATROSKA_SEGMENT_HPP_
  27
  28 #include "mkv.hpp"
  29
  30 class EbmlParser;
  31
  32 class chapter_edition_c;
  33 class chapter_translation_c;
  34 class chapter_item_c;
  35
  36 struct mkv_track_t;
  37 struct mkv_index_t;
  38
  39 class matroska_segment_c
  40 {
  41 public:
  42     matroska_segment_c( demux_sys_t & demuxer, EbmlStream & estream );
  43     virtual ~matroska_segment_c();
  44
  45     KaxSegment              *segment;
  46     EbmlStream              & es;
  47
  48     /* time scale */
  49     uint64_t                i_timescale;
  50
  51     /* duration of the segment */
  52     mtime_t                 i_duration;
  53     mtime_t                 i_start_time;
  54
  55     /* all tracks */
  56     std::vector<mkv_track_t*> tracks;
  57
  58     /* from seekhead */
  59     int                     i_seekhead_count;
  60     int64_t                 i_seekhead_position;
  61     int64_t                 i_cues_position;
  62     int64_t                 i_tracks_position;
  63     int64_t                 i_info_position;
  64     int64_t                 i_chapters_position;
  65     int64_t                 i_tags_position;
  66     int64_t                 i_attachments_position;
  67
  68     KaxCluster              *cluster;
  69     uint64                  i_block_pos;
  70     uint64                  i_cluster_pos;
  71     int64_t                 i_start_pos;
  72     KaxSegmentUID           *p_segment_uid;
  73     KaxPrevUID              *p_prev_segment_uid;
  74     KaxNextUID              *p_next_segment_uid;
  75
  76     bool                    b_cues;
  77     int                     i_index;
  78     int                     i_index_max;
  79     mkv_index_t             *p_indexes;
  80
  81     /* info */
  82     char                    *psz_muxing_application;
  83     char                    *psz_writing_application;
  84     char                    *psz_segment_filename;
  85     char                    *psz_title;
  86     char                    *psz_date_utc;
  87
  88     /* !!!!! GCC 3.3 bug on Darwin !!!!! */
  89     /* when you remove this variable the compiler issues an atomicity error */
  90     /* this variable only works when using std::vector<chapter_edition_c> */
  91     std::vector<chapter_edition_c*> stored_editions;
  92     int                             i_default_edition;
  93
  94     std::vector<chapter_translation_c*> translations;
  95     std::vector<KaxSegmentFamily*>  families;
  96
  97     demux_sys_t                    & sys;
  98     EbmlParser                     *ep;
  99     bool                           b_preloaded;
 100     bool                           b_ref_external_segments;
 101
 102     bool Preload();
 103     bool PreloadFamily( const matroska_segment_c & segment );
 104     void InformationCreate();
 105     void Seek( mtime_t i_date, mtime_t i_time_offset, int64_t i_global_position );
 106     int BlockGet( KaxBlock * &, KaxSimpleBlock * &, bool *, bool *, int64_t *);
 107
 108     int BlockFindTrackIndex( size_t *pi_track,
 109                              const KaxBlock *, const KaxSimpleBlock * );
 110
 111     bool Select( mtime_t i_start_time );
 112     void UnSelect();
 113
 114     static bool CompareSegmentUIDs( const matroska_segment_c * item_a, const matroska_segment_c * item_b );
 115
 116 private:
 117     void LoadCues( KaxCues *cues );
 118     void LoadTags( KaxTags *tags );
 119     bool LoadSeekHeadItem( const EbmlCallbacks & ClassInfos, int64_t i_element_position );
 120     void ParseInfo( KaxInfo *info );
 121     void ParseAttachments( KaxAttachments *attachments );
 122     void ParseChapters( KaxChapters *chapters );
 123     void ParseSeekHead( KaxSeekHead *seekhead );
 124     void ParseTracks( KaxTracks *tracks );
 125     void ParseChapterAtom( int i_level, KaxChapterAtom *ca, chapter_item_c & chapters );
 126     void ParseTrackEntry( KaxTrackEntry *m );
 127     void ParseCluster( bool b_update_start_time = true );
 128     void ParseSimpleTags( KaxTagSimple *tag, int level = 50 );
 129     void IndexAppendCluster( KaxCluster *cluster );
 130 };
 131
 132
 133 #endif