/usr/include/ddccontrol/ddcci.h is in libddccontrol-dev 0.4.2-11.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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ddc/ci interface functions header
Copyright(c) 2004 Oleg I. Vdovikin (oleg@cs.msu.su)
Copyright(c) 2004-2005 Nicolas Boichat (nicolas@boichat.ch)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef DDCCI_H
#define DDCCI_H
#ifdef HAVE_GETTEXT
#include <libintl.h>
#include <locale.h>
#define _(String) gettext (String)
#define gettext_noop(String) String
#define N_(String) gettext_noop (String)
#else
#define _(String) String
#define N_(String) String
#endif
#include <time.h>
#include <sys/time.h>
struct profile;
enum monitor_type {
unk = 0,
lcd = 1,
crt = 2
};
/* Structure to store CAPS vcp entry (control and related values) */
struct vcp_entry {
int values_len; /* -1 if values are not specified */
unsigned short* values;
};
/* Structure to store CAPS */
struct caps {
struct vcp_entry* vcp[256]; /* vcp entries */
enum monitor_type type;
char* raw_caps; /* raw text caps */
};
#include "monitor_db.h"
struct monitor {
int fd;
unsigned int addr;
char pnpid[8];
unsigned char digital; /* 0 - digital, 1 - analog */
struct timeval last;
struct monitor_db* db;
struct caps caps;
struct profile* profiles; /* profiles available for this monitor. Filled by get_all_profiles. */
enum {
dev
#ifdef HAVE_DDCPCI
,pci
#endif
} type;
int probing; /* are we probing? */
int fallback;
/* 0 - the db is designed for this monitor
1 - we are using a manufacturer standard profile (warn the user)
2 - we are using the VESA generic profile (warn the user) */
};
/* Struct used to return monitor data probed by ddcci_probe */
struct monitorlist {
char* filename; /* I2C device filename */
unsigned char supported; /* 0 - DDC/CI not supported, 1 - DDC/CI supported */
char* name;
unsigned char digital; /* 0 - digital, 1 - analog */
struct monitorlist* next;
};
struct monitorlist* ddcci_probe();
void ddcci_free_list(struct monitorlist* list);
int ddcci_open(struct monitor* mon, const char* filename, int probing);
int ddcci_save(struct monitor* mon);
int ddcci_close(struct monitor* mon);
int ddcci_writectrl(struct monitor* mon, unsigned char ctrl, unsigned short value, int delay);
/* return values: < 0 - failure, 0 - contron not supported, > 0 - supported */
int ddcci_readctrl(struct monitor* mon, unsigned char ctrl,
unsigned short *value, unsigned short *maximum);
int ddcci_parse_caps(const char* caps_str, struct caps* caps, int add);
int ddcci_caps(struct monitor* mon);
/* verbosity level (0 - normal, 1 - encoded data, 2 - ddc/ci frames) */
void ddcci_verbosity(int verbosity);
int get_verbosity();
int ddcci_init(char* usedatadir);
void ddcci_release();
void ddcpci_send_heartbeat();
/* Create $HOME/.ddccontrol and subdirectories if necessary */
int ddcci_create_config_dir();
/* Macros */
#define DDCCI_DB_RETURN_IF_RUN(cond, value, message, node, run) \
if (cond) { \
if (node) \
fprintf(stderr, _("Error: %s @%s:%d (%s:%ld)\n"), message, __FILE__, __LINE__, \
((xmlNodePtr)node)->doc->name, XML_GET_LINE(node)); \
else \
fprintf(stderr, _("Error: %s @%s:%d\n"), message, __FILE__, __LINE__); \
run \
return value; \
}
#define DDCCI_DB_RETURN_IF(cond, value, message, node) \
DDCCI_DB_RETURN_IF_RUN(cond, value, message, node, {})
#define DDCCI_RETURN_IF_RUN(cond, value, message, run) \
if (cond) { \
fprintf(stderr, _("Error: %s @%s:%d\n"), message, __FILE__, __LINE__); \
run \
return value; \
}
#define DDCCI_RETURN_IF(cond, value, message) \
DDCCI_RETURN_IF_RUN(cond, value, message, {})
#endif //DDCCI_H
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