Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/MapResourceToAvatarSizes/Sources/MapResourceToAvatarSizes.swift

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+import Foundation
+import UIKit
+import SwiftSignalKit
+import Postbox
+import TelegramCore
+import Display
+
+public func mapResourceToAvatarSizes(postbox: Postbox, resource: MediaResource, representations: [TelegramMediaImageRepresentation]) -> Signal<[Int: Data], NoError> {
+    return postbox.mediaBox.resourceData(resource)
+    |> take(1)
+    |> map { data -> [Int: Data] in
+        guard data.complete, let image = UIImage(contentsOfFile: data.path) else {
+            return [:]
+        }
+        var result: [Int: Data] = [:]
+        for i in 0 ..< representations.count {
+            let size: CGSize
+            if representations[i].dimensions.width == 80 {
+                size = CGSize(width: 160.0, height: 160.0)
+            } else {
+                size = representations[i].dimensions.cgSize
+            }
+            if let scaledImage = generateScaledImage(image: image, size: size, scale: 1.0), let scaledData = scaledImage.jpegData(compressionQuality: 0.8) {
+                result[i] = scaledData
+            }
+        }
+        return result
+    }
+}