mirror of
https://github.com/RGBCube/serenity
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8184870f93
This library can be used (for the most part) by kernel drivers as well as user mode. For this reason FixedPoint is used rather than floating point, but kept to a minimum.
64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
/*
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/FixedPoint.h>
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#include <AK/Optional.h>
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#include <AK/Types.h>
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namespace EDID {
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class DMT final {
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public:
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struct CVT {
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u8 bytes[3];
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};
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struct MonitorTiming {
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enum class ScanType : u8 {
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NonInterlaced,
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Interlaced
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};
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enum class CVTCompliance : u8 {
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NotCompliant,
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Compliant,
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CompliantReducedBlanking,
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CompliantReducedBlankingV2,
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};
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u8 dmt_id;
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u8 std_bytes[2];
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u8 char_width_pixels;
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u16 horizontal_pixels;
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u16 vertical_lines;
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u32 horizontal_frequency_hz;
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u32 vertical_frequency_millihz;
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u32 pixel_clock_khz;
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u8 horizontal_front_porch_pixels;
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u8 vertical_front_porch_lines;
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u16 horizontal_blank_pixels;
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u16 vertical_blank_lines;
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u16 horizontal_sync_time_pixels;
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u8 vertical_sync_time_lines;
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CVTCompliance cvt_compliance { CVTCompliance::NotCompliant };
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u8 cvt_bytes[3] {};
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ScanType scan_type { ScanType::NonInterlaced };
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ALWAYS_INLINE bool has_std() const { return std_bytes[0] != 0; }
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ALWAYS_INLINE bool has_cvt() const { return cvt_bytes[0] != 0; }
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FixedPoint<16, u32> horizontal_frequency_khz() const;
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FixedPoint<16, u32> vertical_frequency_hz() const;
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u32 refresh_rate_hz() const;
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String name() const;
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};
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static MonitorTiming const* find_timing_by_dmt_id(u8);
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static MonitorTiming const* find_timing_by_std_id(u8, u8);
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static MonitorTiming const* find_timing_by_cvt(CVT);
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};
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}
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