added scale parameter

Author: awxkee

JxlCoder.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
     s.name             = 'JxlCoder'
-    s.version          = '1.3.4'
+    s.version          = '1.3.5'
     s.summary          = 'JXL coder for iOS and MacOS'
     s.description      = 'Provides support for JXL files in iOS and MacOS'
     s.homepage         = 'https://github.com/awxkee/jxl-coder-swift'

Sources/JxlCoder/JXLCoder.swift

@@ -55,9 +55,10 @@ public class JXLCoder {
      **/
     public static func decode(srcStream: InputStream, 
                               rescale: CGSize = .zero,
+                              scale: Int = 1,
                               pixelFormat: JXLPreferredPixelFormat = .optimal,
                               sampler: JxlSampler = .hann) throws -> JXLPlatformImage {
-        return try shared.decode(srcStream, rescale: rescale, pixelFormat: pixelFormat, sampler: sampler)
+        return try shared.decode(srcStream, rescale: rescale, pixelFormat: pixelFormat, sampler: sampler, scale: Int32(scale))
     }
 
     /***
@@ -66,13 +67,14 @@ public class JXLCoder {
      **/
     public static func decode(url: URL, 
                               rescale: CGSize = .zero,
+                              scale: Int = 1,
                               pixelFormat: JXLPreferredPixelFormat = .optimal,
                               sampler: JxlSampler = .lanczos) throws -> JXLPlatformImage {
         guard let srcStream = InputStream(url: url) else {
             throw NSError(domain: "JXLCoder", code: 500,
                           userInfo: [NSLocalizedDescriptionKey: "JXLCoder cannot open provided URL"])
         }
-        return try shared.decode(srcStream, rescale: rescale, pixelFormat: pixelFormat, sampler: sampler)
+        return try shared.decode(srcStream, rescale: rescale, pixelFormat: pixelFormat, sampler: sampler, scale: Int32(scale))
     }
 
     /***
@@ -81,10 +83,11 @@ public class JXLCoder {
      **/
     public static func decode(data: Data, 
                               rescale: CGSize = .zero,
+                              scale: Int = 1,
                               pixelFormat: JXLPreferredPixelFormat = .optimal,
                               sampler: JxlSampler = .lanczos) throws -> JXLPlatformImage {
         let srcStream = InputStream(data: data)
-        return try shared.decode(srcStream, rescale: rescale, pixelFormat: pixelFormat, sampler: sampler)
+        return try shared.decode(srcStream, rescale: rescale, pixelFormat: pixelFormat, sampler: sampler, scale: Int32(scale))
     }
 
     /***

Sources/jxlc/JxlInternalCoder.h

@@ -32,10 +32,11 @@
 #import "CJpegXLAnimatedDecoder.h"
 
 @interface JxlInternalCoder: NSObject
-- (nullable JXLSystemImage *)decode:(nonnull NSInputStream *)inputStream 
+- (nullable JXLSystemImage *)decode:(nonnull NSInputStream *)inputStream
                              rescale:(CGSize)rescale
                              pixelFormat:(JXLPreferredPixelFormat)preferredPixelFormat
                              sampler:(JxlSampler)sampler
+                             scale:(int)scale
                              error:(NSError *_Nullable * _Nullable)error;
 - (CGSize)getSize:(nonnull NSInputStream *)inputStream error:(NSError *_Nullable * _Nullable)error;
 - (nullable NSData *)encode:(nonnull JXLSystemImage *)platformImage

Sources/jxlc/JxlInternalCoder.mm

@@ -194,6 +194,7 @@ - (nullable JXLSystemImage *)decode:(nonnull NSInputStream *)inputStream
                              rescale:(CGSize)rescale
                              pixelFormat:(JXLPreferredPixelFormat)preferredPixelFormat
                              sampler:(JxlSampler)sampler
+                             scale:(int)scale
                              error:(NSError *_Nullable * _Nullable)error {
     try {
         int buffer_length = 30196;
@@ -384,7 +385,7 @@ - (nullable JXLSystemImage *)decode:(nonnull NSInputStream *)inputStream
     #if JXL_PLUGIN_MAC
         image = [[NSImage alloc] initWithCGImage:imageRef size:CGSizeZero];
     #else
-        image = [UIImage imageWithCGImage:imageRef scale:1 orientation:UIImageOrientationUp];
+        image = [UIImage imageWithCGImage:imageRef scale:scale orientation:UIImageOrientationUp];
     #endif
 
         return image;