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https://github.com/mudita/MuditaOS.git
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17a7c2bf8f
* Added ENABLE_VERSION_PRO build flag that selects different config for 2 Pro device. * Reduced lowest brightness level for Pro 2 device. * Changed the format in which brightness values are stored in database - previously it was stored as PWM percentage, now 1-10 scale system level is used.
36 lines
1.3 KiB
C++
36 lines
1.3 KiB
C++
// Copyright (c) 2017-2024, Mudita Sp. z.o.o. All rights reserved.
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// For licensing, see https://github.com/mudita/MuditaOS/blob/master/LICENSE.md
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#pragma once
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#include <cmath>
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#include <cstdint>
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#include <algorithm>
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namespace utils::frontlight
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{
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#if defined(CONFIG_VERSION_PRO) && (CONFIG_VERSION_PRO == 1)
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inline constexpr auto minimumLightOnPercentOffsetValue = 8.0f;
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#else
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inline constexpr auto minimumLightOnPercentOffsetValue = 16.0f;
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#endif
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inline constexpr auto minPercent = 0.0f;
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inline constexpr auto maxPercent = 100.0f;
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inline constexpr auto minBrightness = 1U;
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inline constexpr auto maxBrightness = 10U;
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inline constexpr float multiplier = (maxPercent - minimumLightOnPercentOffsetValue) / maxBrightness;
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static inline float fixedValToPercentage(std::uint8_t value)
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{
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const float valueScaled =
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(static_cast<float>(value) - minBrightness) * multiplier + minimumLightOnPercentOffsetValue;
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return std::clamp(valueScaled, minPercent, maxPercent);
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}
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static inline std::uint8_t percentageToFixedVal(float percent)
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{
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const float value = (percent - minimumLightOnPercentOffsetValue) / multiplier;
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return static_cast<std::uint8_t>(std::round(value + minBrightness));
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}
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} // namespace utils::frontlight
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