Support decoding ISO HDR (avif/heic/jpeg-xl, etc) (SDWebImage#3778)

* Support HDR

* Support HDR

* When using SDWebImageProgressiveLoad and setting it to SDWebImageContextImageDecodeToHDR, it will be decoded to HDR only when loading is complete.

* When SDImageIOAnimatedCoder turns on incremental, it does not need to be decoded to HDR when it is not completed

* Sample image to remove sensitive information

* 1、use remote resources for HDR testing
2、add simulator log for HDR

* Support HDR encode

* Support HDR encode

* imageRef release error

* HDR Decoded is not required for decoding, otherwise the type will be lost

* HDR encode format

* hdrImageRef  not released correctly

* HDR image must be lazy decode

* HDR image must be lazy decode

* JEPG HDR image must be lazy decode, otherwise it will crash

* HDR, encoding properties add kCGImageDestinationEncodeToISOGainmap, compatible with SDR displays while preserving HDR

* 支持 decode to HDR

* HDR encoding is not currently supported

* add UIImage.sd_isHighDynamicRange, use check UIImage is HDR

* refactor: Do not hack on HEICS and distinguish static/aniamted image encoding UTI

* refactor: Move cross-platform screen info into SDDeviceHelper

* change: Do not disable force decode when turn on decodeToHDR

Need actually check the HDR info of CGImage, or better, we can pre-decode to drop lazy HDR image

* change: use UIImage.imageRendererFormat when force decode using graphics renderer

This can inherit the possible info like dynamic range

* fix: When decode HDR image to SDR, need specify the decode request

Tested on macOS 14.5 and iOS 18.0 behavior

* test: Added unit test for HDR decoding

* demo: Update the macOS demo to show the HDR image

* test: workaround the SDR decode on Simulator environment

* change: The `sd_isHighDynamicRange` should check CGImage as fallback as well

* test: temp disable a unused test case

---------

Co-authored-by: DreamPiggy <[email protected]>

Author: dreampiggy

Examples/SDWebImage Demo/DetailViewController.m

@@ -22,11 +22,21 @@ - (void)configureView {
     if (!self.imageView.sd_imageIndicator) {
         self.imageView.sd_imageIndicator = SDWebImageProgressIndicator.defaultIndicator;
     }
+    BOOL isHDR = [self.imageURL.absoluteString containsString:@"HDR"];
+    if (@available(iOS 17.0, *)) {
+        self.imageView.preferredImageDynamicRange = isHDR ? UIImageDynamicRangeHigh : UIImageDynamicRangeUnspecified;
+    }
+    SDWebImageContext *context = @{
+        SDWebImageContextImageDecodeToHDR: @(isHDR)
+    };
     [self.imageView sd_setImageWithURL:self.imageURL
                       placeholderImage:nil
-                               options:SDWebImageProgressiveLoad | SDWebImageScaleDownLargeImages
-                               context:@{SDWebImageContextImageForceDecodePolicy: @(SDImageForceDecodePolicyNever)}
-    ];
+                               options:SDWebImageFromLoaderOnly | SDWebImageScaleDownLargeImages
+                               context:context
+                              progress:nil
+                             completed:^(UIImage * _Nullable image, NSError * _Nullable error, SDImageCacheType cacheType, NSURL * _Nullable imageURL) {
+        NSLog(@"isHighDynamicRange %@", @(image.sd_isHighDynamicRange));
+    }];
     self.imageView.shouldCustomLoopCount = YES;
     self.imageView.animationRepeatCount = 0;
 }

Examples/SDWebImage Demo/MasterViewController.m

@@ -59,6 +59,9 @@ - (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibB
         [SDWebImageDownloader sharedDownloader].config.executionOrder = SDWebImageDownloaderLIFOExecutionOrder;
 
         self.objects = [NSMutableArray arrayWithObjects:
+                    @"https://raw.githubusercontent.com/CloudlessMoon/SuperResources/master/Images/HEIC/TestHDR1.heic",
+                    @"https://raw.githubusercontent.com/CloudlessMoon/SuperResources/master/Images/JPG/TestHDR1.JPG",
+                    @"https://raw.githubusercontent.com/CloudlessMoon/SuperResources/master/Images/JPG/TestHDR2.JPG",
                     @"http://www.httpwatch.com/httpgallery/authentication/authenticatedimage/default.aspx?0.35786508303135633",     // requires HTTP auth, used to demo the NTLM auth
                     @"http://assets.sbnation.com/assets/2512203/dogflops.gif",
                     @"https://raw.githubusercontent.com/liyong03/YLGIFImage/master/YLGIFImageDemo/YLGIFImageDemo/joy.gif",

Examples/SDWebImage OSX Demo/Base.lproj/Main.storyboard

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.Storyboard.XIB" version="3.0" toolsVersion="21507" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+<document type="com.apple.InterfaceBuilder3.Cocoa.Storyboard.XIB" version="3.0" toolsVersion="23094" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
     <dependencies>
         <deployment identifier="macosx"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="21507"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="23094"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
@@ -677,35 +677,15 @@
                         <rect key="frame" x="0.0" y="0.0" width="480" height="400"/>
                         <autoresizingMask key="autoresizingMask"/>
                         <subviews>
-                            <imageView horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="nbD-Cx-g7b">
-                                <rect key="frame" x="20" y="252" width="204" height="128"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                                <imageCell key="cell" refusesFirstResponder="YES" alignment="left" imageScaling="proportionallyDown" id="vAn-1d-apO"/>
-                            </imageView>
-                            <imageView horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="kv0-67-hkh">
-                                <rect key="frame" x="256" y="252" width="204" height="128"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                                <imageCell key="cell" refusesFirstResponder="YES" alignment="left" imageScaling="proportionallyDown" id="f0P-c9-GMe"/>
-                            </imageView>
-                            <imageView horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="JIp-Or-vBM" customClass="SDAnimatedImageView">
-                                <rect key="frame" x="20" y="116" width="204" height="128"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                                <imageCell key="cell" refusesFirstResponder="YES" alignment="left" imageScaling="proportionallyDown" id="NJq-m3-LlB"/>
-                            </imageView>
-                            <imageView horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="khI-tY-l0M" customClass="SDAnimatedImageView">
-                                <rect key="frame" x="256" y="116" width="204" height="128"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                                <imageCell key="cell" refusesFirstResponder="YES" alignment="left" imageScaling="proportionallyDown" id="WbV-Do-9qy"/>
-                            </imageView>
                             <button translatesAutoresizingMaskIntoConstraints="NO" id="NqE-Zi-qhY">
-                                <rect key="frame" x="212" y="17" width="56" height="31"/>
-                                <constraints>
-                                    <constraint firstAttribute="height" constant="26" id="WoQ-RY-bSV"/>
-                                </constraints>
+                                <rect key="frame" x="211" y="16" width="58" height="33"/>
                                 <buttonCell key="cell" type="bevel" title="Clear" bezelStyle="regularSquare" alignment="center" borderStyle="border" imageScaling="proportionallyUpOrDown" inset="2" id="OYN-fG-Plb">
                                     <behavior key="behavior" pushIn="YES" changeContents="YES" lightByContents="YES"/>
                                     <font key="font" metaFont="system"/>
                                 </buttonCell>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="26" id="WoQ-RY-bSV"/>
+                                </constraints>
                             </button>
                         </subviews>
                         <constraints>
@@ -715,10 +695,6 @@
                     </view>
                     <connections>
                         <outlet property="clearCacheButton" destination="NqE-Zi-qhY" id="eoz-cU-wWs"/>
-                        <outlet property="imageView1" destination="nbD-Cx-g7b" id="t2R-8w-ybH"/>
-                        <outlet property="imageView2" destination="kv0-67-hkh" id="i4k-5c-bno"/>
-                        <outlet property="imageView3" destination="JIp-Or-vBM" id="Qcf-og-59T"/>
-                        <outlet property="imageView4" destination="khI-tY-l0M" id="STy-c1-ihV"/>
                     </connections>
                 </viewController>
                 <customObject id="rPt-NT-nkU" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>

Examples/SDWebImage OSX Demo/ViewController.m

@@ -11,10 +11,15 @@
 
 @interface ViewController ()
 
-@property (weak) IBOutlet NSImageView *imageView1;
-@property (weak) IBOutlet NSImageView *imageView2;
-@property (weak) IBOutlet SDAnimatedImageView *imageView3;
-@property (weak) IBOutlet SDAnimatedImageView *imageView4;
+@property (strong) NSImageView *imageView1;
+@property (strong) SDAnimatedImageView *imageView2;
+
+@property (strong) NSImageView *imageView3;
+@property (strong) SDAnimatedImageView *imageView4;
+
+@property (strong) NSImageView *imageView5;
+@property (strong) NSImageView *imageView6;
+
 @property (weak) IBOutlet NSButton *clearCacheButton;
 
 @end
@@ -23,26 +28,39 @@ @implementation ViewController
 
 - (void)viewDidLoad {
     [super viewDidLoad];
+    self.imageView1 = [NSImageView new];
+    self.imageView2 = [SDAnimatedImageView new];
+    self.imageView3 = [NSImageView new];
+    self.imageView4 = [SDAnimatedImageView new];
+    self.imageView5 = [NSImageView new];
+    self.imageView6 = [NSImageView new];
+    
+    [self.view addSubview:self.imageView1];
+    [self.view addSubview:self.imageView2];
+    [self.view addSubview:self.imageView3];
+    [self.view addSubview:self.imageView4];
+    [self.view addSubview:self.imageView5];
+    [self.view addSubview:self.imageView6];
 
     // For animated GIF rendering, set `animates` to YES or will only show the first frame
-    self.imageView2.animates = YES; // `SDAnimatedImageRep` can be used for built-in `NSImageView` to support better GIF & APNG rendering as well. No need `SDAnimatedImageView`
+    self.imageView3.animates = YES; // `SDAnimatedImageRep` can be used for built-in `NSImageView` to support better GIF & APNG rendering as well. No need `SDAnimatedImageView`
     self.imageView4.animates = YES;
 
+#pragma mark - Static Image
     // NSImageView + Static Image
     self.imageView1.sd_imageIndicator = SDWebImageProgressIndicator.defaultIndicator;
     [self.imageView1 sd_setImageWithURL:[NSURL URLWithString:@"https://raw.githubusercontent.com/recurser/exif-orientation-examples/master/Landscape_2.jpg"] placeholderImage:nil options:SDWebImageProgressiveLoad];
+    // SDAnimatedImageView + Static Image
+    [self.imageView2 sd_setImageWithURL:[NSURL URLWithString:@"https://nr-platform.s3.amazonaws.com/uploads/platform/published_extension/branding_icon/275/AmazonS3.png"]];
 
+#pragma mark - Animated Image
     // NSImageView + Animated Image
-    self.imageView2.sd_imageIndicator = SDWebImageActivityIndicator.largeIndicator;
-    [self.imageView2 sd_setImageWithURL:[NSURL URLWithString:@"https://raw.githubusercontent.com/onevcat/APNGKit/2.2.0/Tests/APNGKitTests/Resources/General/APNG-cube.apng"]];
+    self.imageView3.sd_imageIndicator = SDWebImageActivityIndicator.largeIndicator;
+    [self.imageView3 sd_setImageWithURL:[NSURL URLWithString:@"https://raw.githubusercontent.com/onevcat/APNGKit/2.2.0/Tests/APNGKitTests/Resources/General/APNG-cube.apng"]];
     NSMenu *menu1 = [[NSMenu alloc] initWithTitle:@"Toggle Animation"];
     NSMenuItem *item1 = [menu1 addItemWithTitle:@"Toggle Animation" action:@selector(toggleAnimation:) keyEquivalent:@""];
     item1.tag = 1;
-    self.imageView2.menu = menu1;
-    
-    // SDAnimatedImageView + Static Image
-    [self.imageView3 sd_setImageWithURL:[NSURL URLWithString:@"https://nr-platform.s3.amazonaws.com/uploads/platform/published_extension/branding_icon/275/AmazonS3.png"]];
-    
+    self.imageView3.menu = menu1;
     // SDAnimatedImageView + Animated Image
     self.imageView4.sd_imageTransition = SDWebImageTransition.fadeTransition;
     self.imageView4.imageScaling = NSImageScaleProportionallyUpOrDown;
@@ -53,12 +71,36 @@ - (void)viewDidLoad {
     item2.tag = 2;
     self.imageView4.menu = menu2;
 
+#pragma mark - HDR Image
+    // HDR Image
+    if (@available(macOS 14.0, *)) {
+        self.imageView5.preferredImageDynamicRange = NSImageDynamicRangeHigh;
+        self.imageView6.preferredImageDynamicRange = NSImageDynamicRangeHigh;
+    }
+    [self.imageView5 sd_setImageWithURL:[NSURL URLWithString:@"https://lightroom.adobe.com/v2c/spaces/113ab046f0d04b40aa7f8e10285961a7/assets/cd191116be514e1288ca6ea372303139/revisions/2749aff3294e404c9ffce3518e467d4a/renditions/99673919d096b42650b448f6516089cc.avif"] placeholderImage:nil options:0 context:@{SDWebImageContextImageDecodeToHDR : @(YES)}];
+    // SDR Image
+    [self.imageView6 sd_setImageWithURL:[NSURL URLWithString:@"https://lightroom.adobe.com/v2c/spaces/113ab046f0d04b40aa7f8e10285961a7/assets/cd191116be514e1288ca6ea372303139/revisions/2749aff3294e404c9ffce3518e467d4a/renditions/99673919d096b42650b448f6516089cc"] placeholderImage:nil options:0 context:@{SDWebImageContextImageDecodeToHDR : @(NO)}];
+    
     self.clearCacheButton.target = self;
     self.clearCacheButton.action = @selector(clearCacheButtonClicked:);
     [self.clearCacheButton sd_setImageWithURL:[NSURL URLWithString:@"https://png.icons8.com/color/100/000000/delete-sign.png"]];
     [self.clearCacheButton sd_setAlternateImageWithURL:[NSURL URLWithString:@"https://png.icons8.com/color/100/000000/checkmark.png"]];
 }
 
+- (void)viewDidLayout {
+    [super viewDidLayout];
+    CGFloat space = 20;
+    CGFloat imageWidth = (self.view.frame.size.width - space * 4) / 3;
+    CGFloat imageHeight = (self.view.frame.size.height - space * 3) / 2;
+    
+    self.imageView1.frame = CGRectMake(space * 1 + imageWidth * 0, space, imageWidth, imageHeight);
+    self.imageView2.frame = CGRectMake(self.imageView1.frame.origin.x, self.imageView1.frame.origin.y + imageHeight + space, imageWidth, imageHeight);
+    self.imageView3.frame = CGRectMake(space * 2 + imageWidth * 1, space, imageWidth, imageHeight);
+    self.imageView4.frame = CGRectMake(self.imageView3.frame.origin.x, self.imageView3.frame.origin.y + imageHeight + space, imageWidth, imageHeight);
+    self.imageView5.frame = CGRectMake(space * 3 + imageWidth * 2, space, imageWidth, imageHeight);
+    self.imageView6.frame = CGRectMake(self.imageView5.frame.origin.x, self.imageView5.frame.origin.y + imageHeight + space, imageWidth, imageHeight);
+}
+
 - (void)clearCacheButtonClicked:(NSResponder *)sender {
     NSButton *button = (NSButton *)sender;
     button.state = NSControlStateValueOn;
@@ -69,7 +111,7 @@ - (void)clearCacheButtonClicked:(NSResponder *)sender {
 }
 
 - (void)toggleAnimation:(NSMenuItem *)sender {
-    NSImageView *imageView = sender.tag == 1 ? self.imageView2 : self.imageView4;
+    NSImageView *imageView = sender.tag == 1 ? self.imageView3 : self.imageView4;
     if (imageView.animates) {
         imageView.animates = NO;
     } else {

SDWebImage/Core/SDGraphicsImageRenderer.h

@@ -34,6 +34,11 @@ typedef NS_ENUM(NSInteger, SDGraphicsImageRendererFormatRange) {
 /// A set of drawing attributes that represent the configuration of an image renderer context.
 @interface SDGraphicsImageRendererFormat : NSObject
 
+#if SD_UIKIT
+/// The underlying uiformat for UIKit. This usage of this API should be careful, which may cause out of sync.
+@property (nonatomic, strong, nonnull) UIGraphicsImageRendererFormat *uiformat API_AVAILABLE(ios(10.0), tvos(10.0));
+#endif
+
 /// The display scale of the image renderer context.
 /// The default value is equal to the scale of the main screen.
 @property (nonatomic) CGFloat scale;

SDWebImage/Core/SDGraphicsImageRenderer.m

@@ -8,12 +8,7 @@
 
 #import "SDGraphicsImageRenderer.h"
 #import "SDImageGraphics.h"
-
-@interface SDGraphicsImageRendererFormat ()
-#if SD_UIKIT
-@property (nonatomic, strong) UIGraphicsImageRendererFormat *uiformat API_AVAILABLE(ios(10.0), tvos(10.0));
-#endif
-@end
+#import "SDDeviceHelper.h"
 
 @implementation SDGraphicsImageRendererFormat
 @synthesize scale = _scale;
@@ -131,21 +126,7 @@ - (instancetype)init {
             self.uiformat = uiformat;
         } else {
 #endif
-#if SD_VISION
-            CGFloat screenScale = UITraitCollection.currentTraitCollection.displayScale;
-#elif SD_WATCH
-            CGFloat screenScale = [WKInterfaceDevice currentDevice].screenScale;
-#elif SD_UIKIT
-            CGFloat screenScale = [UIScreen mainScreen].scale;
-#elif SD_MAC
-            NSScreen *mainScreen = nil;
-            if (@available(macOS 10.12, *)) {
-                mainScreen = [NSScreen mainScreen];
-            } else {
-                mainScreen = [NSScreen screens].firstObject;
-            }
-            CGFloat screenScale = mainScreen.backingScaleFactor ?: 1.0f;
-#endif
+            CGFloat screenScale = SDDeviceHelper.screenScale;
             self.scale = screenScale;
             self.opaque = NO;
 #if SD_UIKIT
@@ -172,21 +153,7 @@ - (instancetype)initForMainScreen {
             self.uiformat = uiformat;
         } else {
 #endif
-#if SD_VISION
-            CGFloat screenScale = UITraitCollection.currentTraitCollection.displayScale;
-#elif SD_WATCH
-            CGFloat screenScale = [WKInterfaceDevice currentDevice].screenScale;
-#elif SD_UIKIT
-            CGFloat screenScale = [UIScreen mainScreen].scale;
-#elif SD_MAC
-            NSScreen *mainScreen = nil;
-            if (@available(macOS 10.12, *)) {
-                mainScreen = [NSScreen mainScreen];
-            } else {
-                mainScreen = [NSScreen screens].firstObject;
-            }
-            CGFloat screenScale = mainScreen.backingScaleFactor ?: 1.0f;
-#endif
+            CGFloat screenScale = SDDeviceHelper.screenScale;
             self.scale = screenScale;
             self.opaque = NO;
 #if SD_UIKIT

SDWebImage/Core/SDImageCacheDefine.m

@@ -12,6 +12,7 @@
 #import "SDAnimatedImage.h"
 #import "UIImage+Metadata.h"
 #import "SDInternalMacros.h"
+#import "SDDeviceHelper.h"
 
 #import <CoreServices/CoreServices.h>
 
@@ -49,6 +50,12 @@
         mutableCoderOptions = [NSMutableDictionary dictionaryWithCapacity:6];
     }
 
+    // Some options need preserve the custom decode options
+    NSNumber *decodeToHDR = context[SDWebImageContextImageDecodeToHDR];
+    if (decodeToHDR == nil) {
+        decodeToHDR = mutableCoderOptions[SDImageCoderDecodeToHDR];
+    }
+    
     // Override individual options
     mutableCoderOptions[SDImageCoderDecodeFirstFrameOnly] = @(decodeFirstFrame);
     mutableCoderOptions[SDImageCoderDecodeScaleFactor] = @(scale);
@@ -57,6 +64,7 @@
     mutableCoderOptions[SDImageCoderDecodeTypeIdentifierHint] = typeIdentifierHint;
     mutableCoderOptions[SDImageCoderDecodeFileExtensionHint] = fileExtensionHint;
     mutableCoderOptions[SDImageCoderDecodeScaleDownLimitBytes] = scaleDownLimitBytesValue;
+    mutableCoderOptions[SDImageCoderDecodeToHDR] = decodeToHDR;
 
     return [mutableCoderOptions copy];
 }
@@ -72,6 +80,7 @@ void SDSetDecodeOptionsToContext(SDWebImageMutableContext * _Nonnull mutableCont
     mutableContext[SDWebImageContextImagePreserveAspectRatio] = decodeOptions[SDImageCoderDecodePreserveAspectRatio];
     mutableContext[SDWebImageContextImageThumbnailPixelSize] = decodeOptions[SDImageCoderDecodeThumbnailPixelSize];
     mutableContext[SDWebImageContextImageScaleDownLimitBytes] = decodeOptions[SDImageCoderDecodeScaleDownLimitBytes];
+    mutableContext[SDWebImageContextImageDecodeToHDR] = decodeOptions[SDImageCoderDecodeToHDR];
 
     NSString *typeIdentifierHint = decodeOptions[SDImageCoderDecodeTypeIdentifierHint];
     if (!typeIdentifierHint) {

SDWebImage/Core/SDImageCoder.h

@@ -88,6 +88,14 @@ FOUNDATION_EXPORT SDImageCoderOption _Nonnull const SDImageCoderDecodeUseLazyDec
  */
 FOUNDATION_EXPORT SDImageCoderOption _Nonnull const SDImageCoderDecodeScaleDownLimitBytes;
 
+/**
+ A Boolean value to provide converting to HDR during decoding.
+ @note Supported by iOS 17 and above when using ImageIO coder (third-party coder can support lower firmware)
+ Defaults to NO, decoder will automatically convert SDR.
+ @note works for `SDImageCoder`
+ */
+FOUNDATION_EXPORT SDImageCoderOption _Nonnull const SDImageCoderDecodeToHDR;
+
 // These options are for image encoding
 /**
  A Boolean value indicating whether to encode the first frame only for animated image during encoding. (NSNumber). If not provide, encode animated image if need.

SDWebImage/Core/SDImageCoder.m

@@ -16,6 +16,7 @@
 SDImageCoderOption const SDImageCoderDecodeTypeIdentifierHint = @"decodeTypeIdentifierHint";
 SDImageCoderOption const SDImageCoderDecodeUseLazyDecoding = @"decodeUseLazyDecoding";
 SDImageCoderOption const SDImageCoderDecodeScaleDownLimitBytes = @"decodeScaleDownLimitBytes";
+SDImageCoderOption const SDImageCoderDecodeToHDR = @"decodeToHDR";
 
 SDImageCoderOption const SDImageCoderEncodeFirstFrameOnly = @"encodeFirstFrameOnly";
 SDImageCoderOption const SDImageCoderEncodeCompressionQuality = @"encodeCompressionQuality";