epan/dissectors/packet-mpeg-sect.h

   1 /* packet-mpeg-sect.h
   2  * Declarations of exported routines from mpeg-sect dissector
   3  * Copyright 2012, Weston Schmidt <weston_schmidt@alumni.purdue.edu>
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #ifndef __PACKET_MPEG_SECT_H__
  27 #define __PACKET_MPEG_SECT_H__
  28
  29 #define PACKET_MPEG_SECT_PI__TABLE_ID   0
  30 #define PACKET_MPEG_SECT_PI__SSI        1
  31 #define PACKET_MPEG_SECT_PI__RESERVED   2
  32 #define PACKET_MPEG_SECT_PI__LENGTH     3
  33 #define PACKET_MPEG_SECT_PI__SIZE       4
  34
  35 /* convert a byte that contains two 4bit BCD digits into a decimal value */
  36 #define MPEG_SECT_BCD44_TO_DEC(x)  (((x&0xf0) >> 4) * 10 + (x&0x0f))
  37
  38 /*
  39  * Used to read a date provided in MJD format into a utc_time structure
  40  */
  41 extern gint
  42 packet_mpeg_sect_mjd_to_utc_time(tvbuff_t *tvb, gint offset, nstime_t *utc_time);
  43
  44 /*
  45  *  Used to process the 'standard' mpeg section header that is described below
  46  *  and populate the data into the tree
  47  */
  48 extern guint
  49 packet_mpeg_sect_header(tvbuff_t *tvb, guint offset,
  50                         proto_tree *tree, guint *sect_len, gboolean *ssi);
  51
  52 /*
  53  *  Used to return all the values & items for 'strict' processing of the
  54  *  sub-dissectors that make use of this dissector
  55  */
  56 extern guint
  57 packet_mpeg_sect_header_extra(tvbuff_t *tvb, guint offset, proto_tree *tree,
  58                                 guint *sect_len, guint *reserved, gboolean *ssi,
  59                                 proto_item **items);
  60
  61 /*
  62  *  Used to process the mpeg CRC information & report erorrs found with it.
  63  */
  64 extern guint
  65 packet_mpeg_sect_crc(tvbuff_t *tvb, packet_info *pinfo,
  66                                                 proto_tree *tree, guint start, guint end);
  67 #endif