Temp

submodules/TelegramUI/Sources/ConvertToWebP.swift

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+import UIKit
+import SwiftSignalKit
+import LegacyComponents
+import Display
+#if BUCK
+import WebPImage
+#else
+import WebP
+#endif
+
+private func scaleImage(_ image: UIImage, size: CGSize, boundiingSize: CGSize) -> UIImage? {
+    if #available(iOSApplicationExtension 10.0, iOS 10.0, *) {
+        let format = UIGraphicsImageRendererFormat()
+        format.scale = 1.0
+        let renderer = UIGraphicsImageRenderer(size: size, format: format)
+        return renderer.image { _ in
+            image.draw(in: CGRect(origin: .zero, size: size))
+        }
+    } else {
+        return TGScaleImageToPixelSize(image, size)
+    }
+}
+
+func convertToWebP(image: UIImage, targetSize: CGSize?, targetBoundingSize: CGSize?, quality: CGFloat) -> Signal<Data, NoError> {
+    var image = image
+    if let targetSize = targetSize, let scaledImage = scaleImage(image, size: targetSize, boundiingSize: targetSize) {
+        image = scaledImage
+    }
+    
+    return Signal { subscriber in
+        if let data = try? WebP.convert(toWebP: image, quality: quality * 100.0) {
+            subscriber.putNext(data)
+        }
+        subscriber.putCompletion()
+        
+        return EmptyDisposable
+    } |> runOn(Queue.concurrentDefaultQueue())
+}