146 lines
2.9 KiB
C
146 lines
2.9 KiB
C
/*
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* Copyright 2003, Thomas Kurschel. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _EDID_H
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#define _EDID_H
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//! Extended Display Identification Data (EDID)
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#include "edid_raw.h"
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// vendor info
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typedef struct {
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char manufacturer[4];
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uint16 prod_id;
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uint32 serial;
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uint8 week;
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uint16 year;
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} edid1_vendor;
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// version info
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typedef struct {
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uint8 version;
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uint8 revision;
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} edid1_version;
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// display info
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typedef struct {
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BBITFIELD8_7 (
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input_type : 1, // 1 : digital
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input_voltage : 2, // 0=0.7V/0.3V, 1=0.714V/0.286,
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// 2=1V/0.4V, 3=0.7V/0V
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setup : 1, // true if voltage configurable
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sep_sync : 1,
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comp_sync : 1,
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sync_on_green : 1,
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sync_serr : 1
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);
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uint8 h_size;
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uint8 v_size;
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uint8 gamma; // (x+100)/100
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BBITFIELD8_7 (
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dpms_standby : 1,
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dpms_suspend : 1,
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dpms_off : 1,
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display_type : 2, // 0=mono, 1=rgb, 2=multicolour
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// since EDID version 1.1
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std_colour_space : 1,
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preferred_timing_mode : 1,
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gtf_supported : 1
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);
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uint16 red_x; // all colours are 0.10 fixed point
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uint16 red_y;
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uint16 green_x;
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uint16 green_y;
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uint16 blue_x;
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uint16 blue_y;
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uint16 white_x;
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uint16 white_y;
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} edid1_display;
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// standard timing data
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typedef struct {
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uint16 h_size;
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uint16 v_size;
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uint16 id;
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uint8 ratio;
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uint8 refresh;
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} edid1_std_timing;
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// additional whitepoint
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typedef struct {
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uint8 index;
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uint16 white_x;
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uint16 white_y;
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uint8 gamma; // (x+100)/100
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} edid1_whitepoint;
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// detailed timing description
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typedef struct {
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uint16 pixel_clock; // in 10 kHz
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uint16 h_active;
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uint16 h_blank;
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uint16 v_active;
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uint16 v_blank;
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uint16 h_sync_off;
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uint16 h_sync_width;
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uint16 v_sync_off;
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uint16 v_sync_width;
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uint16 h_size;
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uint16 v_size;
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uint16 h_border;
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uint16 v_border;
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BBITFIELD8_4 (
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interlaced : 1,
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stereo : 2, // upper bit set - left on sync
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// lower bit set - right on sync
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sync : 2,
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misc : 2
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);
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} edid1_detailed_timing;
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// detailed monitor description
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typedef struct {
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uint8 monitor_desc_type;
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union {
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char serial_number[EDID1_EXTRA_STRING_LEN];
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char ascii_data[EDID1_EXTRA_STRING_LEN];
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edid1_monitor_range monitor_range;
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char monitor_name[EDID1_EXTRA_STRING_LEN];
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edid1_whitepoint whitepoint[EDID1_NUM_EXTRA_WHITEPOINTS];
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edid1_std_timing std_timing[EDID1_NUM_EXTRA_STD_TIMING];
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edid1_detailed_timing detailed_timing;
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} data;
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} edid1_detailed_monitor;
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// EDID data block
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typedef struct edid1_info {
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edid1_vendor vendor;
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edid1_version version;
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edid1_display display;
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edid1_established_timing established_timing;
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edid1_std_timing std_timing[EDID1_NUM_STD_TIMING];
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// since EDID version 1.2
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edid1_detailed_monitor detailed_monitor[EDID1_NUM_DETAILED_MONITOR_DESC];
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uint8 num_sections;
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} edid1_info;
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#define EDID_VERSION_1 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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void edid_decode(edid1_info *edid, const edid1_raw *raw);
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void edid_dump(edid1_info *edid);
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#ifdef __cplusplus
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}
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#endif
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#endif // _EDID_H
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