/usr/include/openigtlink/igtl_header.h is in libopenigtlink1-dev 1.9.2~svn7468-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Program: OpenIGTLink Library
Module: $HeadURL: http://svn.na-mic.org/NAMICSandBox/trunk/OpenIGTLink/Source/igtlutil/igtl_header.h $
Language: C
Date: $Date: 2011-03-24 00:32:25 -0400 (Thu, 24 Mar 2011) $
Version: $Revision: 7357 $
Copyright (c) Insight Software Consortium. All rights reserved.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __IGTL_HEADER_H
#define __IGTL_HEADER_H
#define IGTL_HEADER_VERSION 1
#define IGTL_HEADER_SIZE 58
#define IGTL_HEADER_TYPE_SIZE 12
#define IGTL_HEADER_NAME_SIZE 20
/* Following macros will be obsolete. Included for old programs*/
#define IGTL_HEADER_TYPESIZE IGTL_HEADER_TYPE_SIZE
#define IGTL_HEADER_NAMESIZE IGTL_HEADER_NAME_SIZE
#define IGTL_HEADER_DEVSIZE IGTL_HEADER_NAME_SIZE
// Device name prefix macro
#define IGTL_TYPE_PREFIX_NONE 0
#define IGTL_TYPE_PREFIX_GET 1
#define IGTL_TYPE_PREFIX_STT 2
#define IGTL_TYPE_PREFIX_STP 3
#define IGTL_TYPE_PREFIX_RTS 4
#define IGTL_NUM_TYPE_PREFIX 5
#include "igtl_types.h"
#include "igtl_win32header.h"
#ifdef __cplusplus
extern "C" {
#endif
#pragma pack(1) /* For 1-byte boundary in memroy */
/*
* Message header of OpenIGTLink message.
*
* igtl_header is an overall data header for OpenIGTLink protocol.
* It is transfered at beginning of every OpenIGTLink message to give
* type and size of following data body to a receiver.
* These parameters allow the receiver to parse or skip the data body.
*/
typedef struct {
igtl_uint16 version; /* protocol version number */
char name[IGTL_HEADER_TYPE_SIZE]; /* data type name */
char device_name[IGTL_HEADER_NAME_SIZE]; /* device name */
igtl_uint64 timestamp; /* time stamp message */
igtl_uint64 body_size; /* size of the body */
igtl_uint64 crc; /* CRC */
} igtl_header;
#pragma pack()
/*
* Byte order converter for the header structre
*
* igtl_header_convert_byte_order convers endianness of each
* member variable in igtl_header structre from host byte order
* to network byte order, or vice versa.
*
*/
void igtl_export igtl_header_convert_byte_order(igtl_header * header);
#ifdef __cplusplus
}
#endif
#endif /* __IGTL_HEADER_H */
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