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

   1 /*****************************************************************************
   2  * mkv.cpp : 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
  31 #include "Ebml_parser.hpp"
  32
  33 class chapter_edition_c;
  34 class chapter_translation_c;
  35 class chapter_item_c;
  36
  37 class matroska_segment_c
  38 {
  39 public:
  40     matroska_segment_c( demux_sys_t & demuxer, EbmlStream & estream )
  41         :segment(NULL)
  42         ,es(estream)
  43         ,i_timescale(MKVD_TIMECODESCALE)
  44         ,i_duration(-1)
  45         ,i_start_time(0)
  46         ,i_seekhead_count(0)
  47         ,i_seekhead_position(-1)
  48         ,i_cues_position(-1)
  49         ,i_tracks_position(-1)
  50         ,i_info_position(-1)
  51         ,i_chapters_position(-1)
  52         ,i_tags_position(-1)
  53         ,i_attachments_position(-1)
  54         ,cluster(NULL)
  55         ,i_block_pos(0)
  56         ,i_cluster_pos(0)
  57         ,i_start_pos(0)
  58         ,p_segment_uid(NULL)
  59         ,p_prev_segment_uid(NULL)
  60         ,p_next_segment_uid(NULL)
  61         ,b_cues(false)
  62         ,i_index(0)
  63         ,i_index_max(1024)
  64         ,psz_muxing_application(NULL)
  65         ,psz_writing_application(NULL)
  66         ,psz_segment_filename(NULL)
  67         ,psz_title(NULL)
  68         ,psz_date_utc(NULL)
  69         ,i_default_edition(0)
  70         ,sys(demuxer)
  71         ,ep(NULL)
  72         ,b_preloaded(false)
  73     {
  74         p_indexes = (mkv_index_t*)malloc( sizeof( mkv_index_t ) * i_index_max );
  75     }
  76
  77     virtual ~matroska_segment_c();
  78
  79     KaxSegment              *segment;
  80     EbmlStream              & es;
  81
  82     /* time scale */
  83     uint64_t                i_timescale;
  84
  85     /* duration of the segment */
  86     mtime_t                 i_duration;
  87     mtime_t                 i_start_time;
  88
  89     /* all tracks */
  90     std::vector<mkv_track_t*> tracks;
  91
  92     /* from seekhead */
  93     int                     i_seekhead_count;
  94     int64_t                 i_seekhead_position;
  95     int64_t                 i_cues_position;
  96     int64_t                 i_tracks_position;
  97     int64_t                 i_info_position;
  98     int64_t                 i_chapters_position;
  99     int64_t                 i_tags_position;
 100     int64_t                 i_attachments_position;
 101
 102     KaxCluster              *cluster;
 103     uint64                  i_block_pos;
 104     uint64                  i_cluster_pos;
 105     int64_t                 i_start_pos;
 106     KaxSegmentUID           *p_segment_uid;
 107     KaxPrevUID              *p_prev_segment_uid;
 108     KaxNextUID              *p_next_segment_uid;
 109
 110     bool                    b_cues;
 111     int                     i_index;
 112     int                     i_index_max;
 113     mkv_index_t             *p_indexes;
 114
 115     /* info */
 116     char                    *psz_muxing_application;
 117     char                    *psz_writing_application;
 118     char                    *psz_segment_filename;
 119     char                    *psz_title;
 120     char                    *psz_date_utc;
 121
 122     /* !!!!! GCC 3.3 bug on Darwin !!!!! */
 123     /* when you remove this variable the compiler issues an atomicity error */
 124     /* this variable only works when using std::vector<chapter_edition_c> */
 125     std::vector<chapter_edition_c*> stored_editions;
 126     int                             i_default_edition;
 127
 128     std::vector<chapter_translation_c*> translations;
 129     std::vector<KaxSegmentFamily*>  families;
 130
 131     demux_sys_t                    & sys;
 132     EbmlParser                     *ep;
 133     bool                           b_preloaded;
 134
 135     bool Preload( );
 136     bool LoadSeekHeadItem( const EbmlCallbacks & ClassInfos, int64_t i_element_position );
 137     bool PreloadFamily( const matroska_segment_c & segment );
 138     void ParseInfo( KaxInfo *info );
 139     void ParseAttachments( KaxAttachments *attachments );
 140     void ParseChapters( KaxChapters *chapters );
 141     void ParseSeekHead( KaxSeekHead *seekhead );
 142     void ParseTracks( KaxTracks *tracks );
 143     void ParseChapterAtom( int i_level, KaxChapterAtom *ca, chapter_item_c & chapters );
 144     void ParseTrackEntry( KaxTrackEntry *m );
 145     void ParseCluster( );
 146     void IndexAppendCluster( KaxCluster *cluster );
 147     void LoadCues( KaxCues *cues );
 148     void LoadTags( KaxTags *tags );
 149     void ParseSimpleTags( KaxTagSimple *tag );
 150     void InformationCreate( );
 151     void Seek( mtime_t i_date, mtime_t i_time_offset, int64_t i_global_position );
 152     int BlockGet( KaxBlock * &, KaxSimpleBlock * &, bool *, bool *, int64_t *);
 153
 154     int BlockFindTrackIndex( size_t *pi_track,
 155                              const KaxBlock *, const KaxSimpleBlock * );
 156
 157
 158     bool Select( mtime_t i_start_time );
 159     void UnSelect( );
 160
 161     static bool CompareSegmentUIDs( const matroska_segment_c * item_a, const matroska_segment_c * item_b );
 162 };
 163
 164
 165 #endif