Converting a UIImage to the WebP format is extremely slow

Converting a UIImage to the WebP format is extremely slow. For a 2.5-megabyte photo with a compression ratio of 0.85, it takes approximately 13.5 seconds

let webpCoder = SDImageWebPCoder.shared
var options: [SDImageCoderOption: Any] = [:]
options[SDImageCoderOption.encodeCompressionQuality] = 0.85

if let webpData = webpCoder.encodedData(with: image, format: .webP, options: options) {
compressionImageData = webpData
}

从 issue 中显示的 encodedData(with:format:options:) 调用开始，对使用所述 2.5 MB 图像和 0.85 质量进行 UIImage 到 WebP 编码的过程进行性能分析。将观察到的 13.5 秒运行时间与基于 libwebp 的 coder 行为进行比较。完成标准是确定编码瓶颈，并记录或实现一个能实质性改善此情况的修复方案。