/usr/include/libzia/zhdkeyb.h is in libzia-dev 4.09-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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zhdkeyb.h - header for zhdkeyb.c
Copyright (C) 2011 Ladislav Vaiz <ok1zia@nagano.cz>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
*/
#ifndef __ZHDKEYB_H
#define __ZHDKEYB_H
#include <libziaint.h>
#include <glib.h>
#ifdef Z_HAVE_LIBFTDI
#include <ftdi.h>
#endif
struct zselect;
#define Z_LINE_1 0
#define Z_LINE_2 0x40
#define Z_HDKEYB_LINES 2
#define Z_HDKEYB_CHARS 16
#define Z_HDKEYB_ROTARS 4
#define Z_HDKEYB_BUFLEN 32
struct zhdkeyb{
#ifdef Z_HAVE_LIBFTDI
struct ftdi_context *ftdi;
GThread *thread;
int qtf[Z_HDKEYB_ROTARS];
int give_me_chance;
int thread_break;
char sbuf[Z_HDKEYB_BUFLEN], rbuf[Z_HDKEYB_BUFLEN];
int slen, rlen;
char wr, rd;
char oldkeystate;
char vram[Z_HDKEYB_LINES][Z_HDKEYB_CHARS], oldvram[Z_HDKEYB_LINES][Z_HDKEYB_CHARS];
int actnr;
char qtfstr[4];
struct zselect *zsel;
#else
int dummy;
#endif
};
extern struct zhdkeyb *zhdkeyb;
struct zhdkeyb *zhdkeyb_init(struct zselect *zsel);
void zhdkeyb_free(struct zhdkeyb *zhdkeyb);
gpointer zhdkeyb_main(gpointer xxx);
void zhdkeyb_send(struct zhdkeyb *zhdkeyb);
int zhdkeyb_flush(struct zhdkeyb *zhdkeyb);
int zhdkeyb_reset(struct zhdkeyb *zhdkeyb);
int zhdkeyb_setdir(struct zhdkeyb *zhdkeyb);
int zhdkeyb_cmd_nowait(struct zhdkeyb *zhdkeyb, char c);
int zhdkeyb_write(struct zhdkeyb *zhdkeyb, char c);
int zhdkeyb_wait(struct zhdkeyb *zhdkeyb);
int zhdkeyb_cmd(struct zhdkeyb *zhdkeyb, char c);
#define zhdkeyb_cursor(zhdkeyb, c) zhdkeyb_cmd(zhdkeyb, 0x80|(c))
int zhdkeyb_data(struct zhdkeyb *zhdkeyb, char c);
void zhdkeyb_cgram(struct zhdkeyb *zhdkeyb, char pos);
void zhdkeyb_printc(struct zhdkeyb *zhdkeyb, char *str);
void zhdkeyb_printf(struct zhdkeyb *zhdkeyb, char line, char col, char *m, ...);
void zhdkeyb_print(struct zhdkeyb *zhdkeyb, char pos, char *str);
void zhdkeyb_clear(struct zhdkeyb *zhdkeyb);
char zhdkeyb_keyb_state(struct zhdkeyb *zhdkeyb);
char zhdkeyb_read_key(struct zhdkeyb *zhdkeyb);
int zhdkeyb_debug_pins(char a, char *t);
#endif
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