modules/demux/mpeg/ts.h

   1 /*****************************************************************************
   2  * ts.h: Transport Stream input module for VLC.
   3  *****************************************************************************
   4  * Copyright (C) 2004-2016 VLC authors and VideoLAN
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20 #ifndef VLC_TS_H
  21 #define VLC_TS_H
  22
  23 #ifdef HAVE_ARIBB24
  24     typedef struct arib_instance_t arib_instance_t;
  25 #endif
  26 typedef struct csa_t csa_t;
  27
  28 #define TS_USER_PMT_NUMBER (0)
  29
  30 #define TS_PSI_PAT_PID 0x00
  31
  32 typedef enum ts_standards_e
  33 {
  34     TS_STANDARD_AUTO = 0,
  35     TS_STANDARD_MPEG,
  36     TS_STANDARD_DVB,
  37     TS_STANDARD_ARIB,
  38     TS_STANDARD_ATSC,
  39     TS_STANDARD_TDMB,
  40 } ts_standards_e;
  41
  42 typedef struct
  43 {
  44     int i_service;
  45 } vdr_info_t;
  46
  47 struct demux_sys_t
  48 {
  49     stream_t   *stream;
  50     bool        b_canseek;
  51     bool        b_canfastseek;
  52     int         current_title;
  53     int         current_seekpoint;
  54     unsigned    updates;
  55     vlc_mutex_t     csa_lock;
  56
  57     /* TS packet size (188, 192, 204) */
  58     unsigned    i_packet_size;
  59
  60     /* Additional TS packet header size (BluRay TS packets have 4-byte header before sync byte) */
  61     unsigned    i_packet_header_size;
  62
  63     /* how many TS packet we read at once */
  64     unsigned    i_ts_read;
  65
  66     bool        b_cc_check;
  67     bool        b_ignore_time_for_positions;
  68
  69     ts_standards_e standard;
  70
  71     struct
  72     {
  73 #ifdef HAVE_ARIBB24
  74         arib_instance_t *p_instance;
  75 #endif
  76         stream_t     *b25stream;
  77     } arib;
  78
  79     /* All pid */
  80     ts_pid_list_t pids;
  81
  82     bool        b_user_pmt;
  83     int         i_pmt_es;
  84
  85     enum
  86     {
  87         NO_ES, /* for preparse */
  88         DELAY_ES,
  89         CREATE_ES
  90     } es_creation;
  91     #define PREPARSING p_sys->es_creation == NO_ES
  92
  93     /* */
  94     bool        b_es_id_pid;
  95     uint16_t    i_next_extraid;
  96
  97     csa_t       *csa;
  98     int         i_csa_pkt_size;
  99     bool        b_split_es;
 100     bool        b_valid_scrambling;
 101
 102     bool        b_trust_pcr;
 103
 104     /* */
 105     bool        b_access_control;
 106     bool        b_end_preparse;
 107
 108     /* */
 109     time_t      i_network_time;
 110     time_t      i_network_time_update; /* for network time interpolation */
 111     bool        b_broken_charset; /* True if broken encoding is used in EPG/SDT */
 112
 113     /* Selected programs */
 114     enum
 115     {
 116         PROGRAM_AUTO_DEFAULT, /* Always select first program sending data */
 117         PROGRAM_LIST, /* explicit list of programs, see list below */
 118         PROGRAM_ALL, /* everything */
 119     } seltype; /* reflects the DEMUX_SET_GROUP */
 120     DECL_ARRAY( int ) programs; /* List of selected/access-filtered programs */
 121     bool        b_default_selection; /* True if set by default to first pmt seen (to get data from filtered access) */
 122
 123     struct
 124     {
 125         mtime_t i_first_dts;     /* first dts encountered for the stream */
 126         int     i_timesourcepid; /* which pid we saved the dts from */
 127         enum { PAT_WAITING = 0, PAT_MISSING, PAT_FIXTRIED } status; /* set if we haven't seen PAT within MIN_PAT_INTERVAL */
 128     } patfix;
 129
 130     vdr_info_t  vdr;
 131
 132     /* downloadable content */
 133     vlc_dictionary_t attachments;
 134
 135     /* */
 136     bool        b_start_record;
 137 };
 138
 139 void TsChangeStandard( demux_sys_t *, ts_standards_e );
 140
 141 bool ProgramIsSelected( demux_sys_t *, uint16_t i_pgrm );
 142
 143 void UpdatePESFilters( demux_t *p_demux, bool b_all );
 144
 145 int ProbeStart( demux_t *p_demux, int i_program );
 146 int ProbeEnd( demux_t *p_demux, int i_program );
 147
 148 void AddAndCreateES( demux_t *p_demux, ts_pid_t *pid, bool b_create_delayed );
 149 int FindPCRCandidate( ts_pmt_t *p_pmt );
 150
 151 #endif