/* 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, 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 */
