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/* edid.h
*
* Copyright 2007, 2008, Red Hat, Inc.
*
* This file is part of the Mate Library.
*
* The Mate Library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* The Mate Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with the Mate Library; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Soren Sandmann <sandmann@redhat.com>
*/
#ifndef EDID_H
#define EDID_H
typedef unsigned char uchar;
typedef struct MonitorInfo MonitorInfo;
typedef struct Timing Timing;
typedef struct DetailedTiming DetailedTiming;
typedef enum {
UNDEFINED,
DVI,
HDMI_A,
HDMI_B,
MDDI,
DISPLAY_PORT
} Interface;
typedef enum {
UNDEFINED_COLOR,
MONOCHROME,
RGB,
OTHER_COLOR
} ColorType;
typedef enum {
NO_STEREO,
FIELD_RIGHT,
FIELD_LEFT,
TWO_WAY_RIGHT_ON_EVEN,
TWO_WAY_LEFT_ON_EVEN,
FOUR_WAY_INTERLEAVED,
SIDE_BY_SIDE
} StereoType;
struct Timing {
int width;
int height;
int frequency;
};
struct DetailedTiming {
int pixel_clock;
int h_addr;
int h_blank;
int h_sync;
int h_front_porch;
int v_addr;
int v_blank;
int v_sync;
int v_front_porch;
int width_mm;
int height_mm;
int right_border;
int top_border;
int interlaced;
StereoType stereo;
int digital_sync;
union {
struct {
int bipolar;
int serrations;
int sync_on_green;
} analog;
struct {
int composite;
int serrations;
int negative_vsync;
int negative_hsync;
} digital;
} connector;
};
struct MonitorInfo {
int checksum;
char manufacturer_code[4];
int product_code;
unsigned int serial_number;
int production_week; /* -1 if not specified */
int production_year; /* -1 if not specified */
int model_year; /* -1 if not specified */
int major_version;
int minor_version;
int is_digital;
union {
struct {
int bits_per_primary;
Interface interface;
int rgb444;
int ycrcb444;
int ycrcb422;
} digital;
struct {
double video_signal_level;
double sync_signal_level;
double total_signal_level;
int blank_to_black;
int separate_hv_sync;
int composite_sync_on_h;
int composite_sync_on_green;
int serration_on_vsync;
ColorType color_type;
} analog;
} connector;
int width_mm; /* -1 if not specified */
int height_mm; /* -1 if not specified */
double aspect_ratio; /* -1.0 if not specififed */
double gamma; /* -1.0 if not specified */
int standby;
int suspend;
int active_off;
int srgb_is_standard;
int preferred_timing_includes_native;
int continuous_frequency;
double red_x;
double red_y;
double green_x;
double green_y;
double blue_x;
double blue_y;
double white_x;
double white_y;
Timing established[24]; /* Terminated by 0x0x0 */
Timing standard[8];
int n_detailed_timings;
DetailedTiming detailed_timings[4];
/* If monitor has a preferred
* mode, it is the first one
* (whether it has, is
* determined by the
* preferred_timing_includes
* bit.
*/
/* Optional product description */
char dsc_serial_number[14];
char dsc_product_name[14];
char dsc_string[14]; /* Unspecified ASCII data */
};
MonitorInfo* decode_edid(const uchar* data);
char* make_display_name(const MonitorInfo* info);
#endif /* !EDID_H */
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