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import CoreGraphics
import SwiftUI
/*
Copyright (C) 2024 Rubén Beltrán del Río
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see https://captura.tranquil.systems.
*/
import UniformTypeIdentifiers
struct GifRenderer {
static func render(_ images: [CGImage], at fps: Int, to url: URL) async {
let framedelay = String(format: "%.3f", 1.0 / Double(fps))
let fileProperties = [
kCGImagePropertyGIFDictionary as String: [kCGImagePropertyGIFLoopCount as String: 0]
]
let gifProperties = [
kCGImagePropertyGIFDictionary as String: [
kCGImagePropertyGIFUnclampedDelayTime as String: framedelay
]
]
let cfURL = url as CFURL
if let destination = CGImageDestinationCreateWithURL(
cfURL, UTType.gif.identifier as CFString, images.count, nil)
{
CGImageDestinationSetProperties(destination, fileProperties as CFDictionary?)
for image in images {
CGImageDestinationAddImage(destination, image, gifProperties as CFDictionary?)
}
CGImageDestinationFinalize(destination)
}
}
}
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