From 34ec3b7bf1b70389bc435603efa78da3d07cc5f6 Mon Sep 17 00:00:00 2001
From: DreamPiggy <lizhuoli1126@126.com>
Date: Fri, 15 May 2020 11:02:05 +0800
Subject: [PATCH] Fix the issue that ImageIO max pixel size larger than image
 size will cause a upscale. This is not the documented behavior

---
 SDWebImage/Core/SDImageIOCoder.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SDWebImage/Core/SDImageIOCoder.m b/SDWebImage/Core/SDImageIOCoder.m
index 11565e12..715b0205 100644
--- a/SDWebImage/Core/SDImageIOCoder.m
+++ b/SDWebImage/Core/SDImageIOCoder.m
@@ -277,7 +277,7 @@ static NSString * kSDCGImageDestinationRequestedFileSize = @"kCGImageDestination
     }
     NSUInteger pixelWidth = CGImageGetWidth(imageRef);
     NSUInteger pixelHeight = CGImageGetHeight(imageRef);
-    if (maxPixelSize.width > 0 && maxPixelSize.height > 0 && pixelWidth > 0 && pixelHeight > 0) {
+    if (maxPixelSize.width > 0 && maxPixelSize.height > 0 && pixelWidth > maxPixelSize.width && pixelHeight > maxPixelSize.height) {
         CGFloat pixelRatio = pixelWidth / pixelHeight;
         CGFloat maxPixelSizeRatio = maxPixelSize.width / maxPixelSize.height;
         CGFloat finalPixelSize;