include/lib/dvb/lowlevel/ca.h

   1 /*
   2  * TIME DESCRIPTION TABLE
   3  *
   4  * Copyright (C) 2000 Ralph Metzler
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 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 General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  *
  20  */
  21
  22 #ifndef __CA_H__
  23 #define __CA_H__
  24
  25 #include <sys/types.h>
  26
  27 #define CA_LEN 8
  28
  29 typedef struct  {
  30         u_char  table_id                        : 8;
  31
  32 #if BYTE_ORDER == BIG_ENDIAN
  33         u_char  section_syntax_indicator        : 1;
  34         u_char  zero                            : 1;
  35         u_char                                  : 2;
  36         u_char  section_length_hi               : 4;
  37 #else
  38         u_char  section_length_hi               : 4;
  39         u_char                                  : 2;
  40         u_char  zero                            : 1;
  41         u_char  section_syntax_indicator        : 1;
  42 #endif
  43
  44         u_char  section_length_lo               : 8;
  45
  46         u_char  reserved_1                      : 8;
  47         u_char  reserved_2                      : 8;
  48
  49 #if BYTE_ORDER == BIG_ENDIAN
  50         u_char                                  : 2;
  51         u_char version_number                   : 5;
  52         u_char current_next_indicator           : 1;
  53 #else
  54         u_char current_next_indicator           : 1;
  55         u_char version_number                   : 5;
  56         u_char                                  : 2;
  57 #endif
  58
  59         u_char section_number                   : 8;
  60
  61         u_char last_section_number              : 8;
  62
  63 } ca_t;
  64
  65
  66
  67 #define CA_MESSAGE_LEN 3
  68
  69 typedef struct  {
  70         u_char  table_id                        : 8;
  71
  72 #if BYTE_ORDER == BIG_ENDIAN
  73         u_char  section_syntax_indicator        : 1;
  74         u_char  DVB_reserved                    : 1;
  75         u_char  ISO_reserved                    : 2;
  76         u_char  section_length_hi               : 4;
  77 #else
  78         u_char  section_length_hi               : 4;
  79         u_char  ISO_reserved                    : 2;
  80         u_char  DVB_reserved                    : 1;
  81         u_char  section_syntax_indicator        : 1;
  82 #endif
  83
  84         u_char  section_length_lo               : 8;
  85
  86         // CA_data_bytes
  87 } ca_message_t;
  88
  89
  90 #define CA_DESCR_LEN 6
  91
  92 typedef struct  {
  93         u_char  descriptor_tag                  : 8;
  94         u_char  descriptor_length               : 8;
  95
  96         u_char  CA_system_ID_hi                 : 8;
  97         u_char  CA_system_ID_lo                 : 8;
  98
  99 #if BYTE_ORDER == BIG_ENDIAN
 100         u_char                                  : 3;
 101         u_char  CA_PID_hi                       : 5;
 102 #else
 103         u_char  CA_PID_hi                       : 5;
 104         u_char                                  : 3;
 105 #endif
 106
 107         u_char  CA_PID_lo                       : 8;
 108
 109 } ca_descr_t;
 110
 111 #endif