mirror of
https://github.com/FBukovina/Atoll.git
synced 2026-10-27 23:24:32 +00:00
65 lines
2.3 KiB
Swift
65 lines
2.3 KiB
Swift
/*
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* Atoll (DynamicIsland)
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* Copyright (C) 2024-2026 Atoll Contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import Foundation
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import Darwin
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final class DisplayServicesDynamic {
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static let shared = DisplayServicesDynamic()
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private let handle: UnsafeMutableRawPointer?
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private typealias GetBrightnessFn = @convention(c) (UInt32, UnsafeMutablePointer<Float>) -> Int32
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private typealias SetBrightnessFn = @convention(c) (UInt32, Float) -> Int32
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private let getBrightnessFn: GetBrightnessFn?
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private let setBrightnessFn: SetBrightnessFn?
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private init() {
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handle = dlopen("/System/Library/PrivateFrameworks/DisplayServices.framework/DisplayServices", RTLD_NOW)
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if handle == nil, let errorPointer = dlerror() {
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let message = String(cString: errorPointer)
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NSLog("⚠️ DisplayServicesDynamic: dlopen failed - %@", message)
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}
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getBrightnessFn = handle.flatMap { dlsym($0, "DisplayServicesGetBrightness") }
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.map { unsafeBitCast($0, to: GetBrightnessFn.self) }
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setBrightnessFn = handle.flatMap { dlsym($0, "DisplayServicesSetBrightness") }
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.map { unsafeBitCast($0, to: SetBrightnessFn.self) }
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}
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func setBrightness(displayID: UInt32, value: Float) -> Int32? {
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guard let fn = setBrightnessFn else { return nil }
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return fn(displayID, value)
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}
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func getBrightness(displayID: UInt32) -> (status: Int32, value: Float)? {
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guard let fn = getBrightnessFn else { return nil }
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var brightness: Float = 0
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let status = fn(displayID, &brightness)
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return (status, brightness)
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}
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deinit {
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if let handle {
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dlclose(handle)
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}
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}
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}
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