include/lib/dvb/lowlevel/ps.h

   1
   2 /*
   3  * PROGRAM STREAM
   4  *
   5  * Copyright (C) 1998  Thomas Mirlacher
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  * The author may be reached as dent@cosy.sbg.ac.at, or
  22  * Thomas Mirlacher, Jakob-Haringerstr. 2, A-5020 Salzburg,
  23  * Austria
  24  *
  25  *------------------------------------------------------------
  26  *
  27  */
  28
  29 #ifndef __PS_H__
  30 #define __PS_H__
  31
  32 #include <sys/types.h>
  33
  34 #define PS_SYSTEM_HDR_LEN 12
  35
  36 typedef struct {
  37         u_char header_length_hi                 : 8;
  38         u_char header_length_lo                 : 8;
  39
  40 #if BYTE_ORDER == BIG_ENDIAN
  41         u_char                                  : 1;
  42         u_char rate_bound_1                     : 7;
  43 #else
  44         u_char rate_bound_1                     : 7;
  45         u_char                                  : 1;
  46 #endif
  47
  48         u_char rate_bound_2                     : 8;
  49
  50 #if BYTE_ORDER == BIG_ENDIAN
  51         u_char rate_bound_3                     : 7;
  52         u_char                                  : 1;
  53
  54         u_char audio_bound                      : 6;
  55         u_char fixed_flag                       : 1;
  56         u_char CSPS_flag                        : 1;
  57
  58         u_char system_audio_lock_flag           : 1;
  59         u_char system_video_lock_flag           : 1;
  60         u_char                                  : 1;
  61         u_char video_bound                      : 5;
  62
  63         u_char packet_rate_restriction_flag     : 1;
  64         u_char reserved_byte                    : 7;
  65 #else
  66         u_char                                  : 1;
  67         u_char rate_bound_3                     : 7;
  68
  69         u_char CSPS_flag                        : 1;
  70         u_char fixed_flag                       : 1;
  71         u_char audio_bound                      : 6;
  72
  73         u_char video_bound                      : 5;
  74         u_char                                  : 1;
  75         u_char system_video_lock_flag           : 1;
  76         u_char system_audio_lock_flag           : 1;
  77
  78         u_char reserved_byte                    : 7;
  79         u_char packet_rate_restriction_flag     : 1;
  80 #endif
  81 } ps_system_hdr_t;
  82
  83 struct ps_system_hdr_2_struct {
  84         u_char stream_id                        : 8;
  85
  86 #if BYTE_ORDER == BIG_ENDIAN
  87         u_char                                  : 2; // has to be 11
  88         u_char PSTD_buffer_bound_scale          : 1;
  89         u_char PSDT_buffer_size_bound_hi        : 5;
  90 #else
  91         u_char PSDT_buffer_size_bound_hi        : 5;
  92         u_char PSTD_buffer_bound_scale          : 1;
  93         u_char                                  : 2; // has to be 11
  94 #endif
  95
  96         u_char PSDT_buffer_size_bound_lo                : 8;
  97 } ps_system_hdr_2_t;
  98
  99 #define PS_STREAM_PACK_HDR      0xBA
 100 #define PS_STREAM_SYSTEM_HDR    0xBB
 101 #define PS_STREAM_VIDEO         0xE0
 102
 103 #if BYTE_ORDER == BIG_ENDIAN
 104 #define PS_START_CODE_PREFIX_RAW        0x000010
 105 #else
 106 #define PS_START_CODE_PREFIX_RAW        0x010000
 107 #endif
 108
 109 #define PS_START_CODE_PREFIX 0x000010
 110
 111 #define PS_HDR_LEN 4
 112
 113 typedef struct {
 114         u_int   start_code_prefix               : 24;
 115         u_char  stream_id                       : 8;
 116 } ps_hdr_t;
 117
 118 typedef struct {
 119 #if BYTE_ORDER == BIG_ENDIAN
 120         u_char                                  : 2;    // should be '01'
 121         u_char  system_clock_reference_1        : 3;
 122         u_char                                  : 1;
 123         u_char  system_clock_reference_2        : 2;
 124 #else
 125         u_char  system_clock_reference_2        : 2;
 126         u_char                                  : 1;
 127         u_char  system_clock_reference_1        : 3;
 128         u_char                                  : 2;    // should be '01'
 129 #endif
 130
 131         u_char  system_clock_reference_3        : 8;
 132
 133 #if BYTE_ORDER == BIG_ENDIAN
 134         u_char  system_clock_reference_4        : 5;
 135         u_char                                  : 1;
 136         u_char  system_clock_reference_5        : 2;
 137 #else
 138         u_char  system_clock_reference_5        : 2;
 139         u_char                                  : 1;
 140         u_char  system_clock_reference_4        : 5;
 141 #endif
 142
 143         u_char  system_clock_reference_6        : 8;
 144
 145 #if BYTE_ORDER == BIG_ENDIAN
 146         u_char  system_clock_reference_7        : 5;
 147         u_char                                  : 1;
 148         u_char  system_clock_reference_ext_1    : 2;
 149
 150         u_char  system_clock_reference_ext_2    : 7;
 151         u_char                                  : 1;
 152 #else
 153         u_char  system_clock_reference_ext_1    : 2;
 154         u_char                                  : 1;
 155         u_char  system_clock_reference_7        : 5;
 156
 157         u_char                                  : 1;
 158         u_char  system_clock_reference_ext_2    : 7;
 159 #endif
 160
 161         u_char  program_mux_rate_1              : 8;
 162         u_char  program_mux_rate_2              : 8;
 163
 164 #if BYTE_ORDER == BIG_ENDIAN
 165         u_char  program_mux_rate_3              : 6;
 166         u_char                                  : 2;
 167
 168         u_char                                  : 5;    //reserved
 169         u_char  pack_stuffing_length            : 3;
 170 #else
 171         u_char                                  : 2;
 172         u_char  program_mux_rate_3              : 6;
 173
 174         u_char  pack_stuffing_length            : 3;
 175         u_char                                  : 5;    //reserved
 176 #endif
 177 } ps_pack_t;
 178
 179 #define PS_PACK_LEN 10
 180 #endif