not working yep_progressiveImage

tigerzhang08 · Jan 27, 2016 · 50bd136 · 50bd136
1 parent 4c03198
commit 50bd136
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Showing 3 changed files with 57 additions and 2 deletions.
diff --git a/Yep/Extensions/UIImage+Yep.swift b/Yep/Extensions/UIImage+Yep.swift
@@ -8,6 +8,8 @@
 
 import UIKit
 import Ruler
+import ImageIO
+import MobileCoreServices
 
 extension UIImage {
 
@@ -572,3 +574,49 @@ extension UIImage {
     }
 }
 
+// MARK: Progressive
+
+extension UIImage {
+
+    var yep_progressiveImage: UIImage? {
+
+        guard let cgImage = CGImage else {
+            return nil
+        }
+
+        let data = NSMutableData()
+
+        guard let distination = CGImageDestinationCreateWithData(data, kUTTypeJPEG, 1, nil) else {
+            return nil
+        }
+
+        let jfifProperties = [
+            kCGImagePropertyJFIFIsProgressive as String: kCFBooleanTrue as Bool,
+            kCGImagePropertyJFIFXDensity as String: 72,
+            kCGImagePropertyJFIFYDensity as String: 72,
+            kCGImagePropertyJFIFDensityUnit as String: 1,
+        ]
+
+        let properties = [
+            kCGImageDestinationLossyCompressionQuality as String: 0.9,
+            kCGImagePropertyJFIFDictionary as String: jfifProperties,
+        ]
+
+        CGImageDestinationAddImage(distination, cgImage, properties)
+
+        guard CGImageDestinationFinalize(distination) else {
+            return nil
+        }
+
+        guard data.length > 0 else {
+            return nil
+        }
+
+        guard let progressiveImage = UIImage(data: data) else {
+            return nil
+        }
+
+        return progressiveImage
+    }
+}
+
diff --git a/Yep/Services/YepDownloader.swift b/Yep/Services/YepDownloader.swift
@@ -290,8 +290,7 @@ extension YepDownloader: NSURLSessionDataDelegate {
                                 /*
                                 if progressReporter.totalProgress > 0.3 {
                                     print("imageTransform")
-                                }
-                                */
+                                }*/
                             }
                         }
                     }

diff --git a/Yep/ViewControllers/Conversation/ConversationViewController.swift b/Yep/ViewControllers/Conversation/ConversationViewController.swift
@@ -4633,6 +4633,14 @@ extension ConversationViewController: UIImagePickerControllerDelegate, UINavigat
         // Do send
 
         let imageData = UIImageJPEGRepresentation(image, YepConfig.messageImageCompressionQuality())!
+        /*
+        var imageData = UIImageJPEGRepresentation(image, YepConfig.messageImageCompressionQuality())!
+
+        if let progressiveImage = UIImage(data: imageData)?.yep_progressiveImage {
+
+            imageData = UIImageJPEGRepresentation(progressiveImage, YepConfig.messageImageCompressionQuality())!
+        }
+        */
 
         let messageImageName = NSUUID().UUIDString