Add supportsHeicLoading

Author: mrousavy

README.md

@@ -167,6 +167,15 @@ const path       = await image.saveToTemporaryFileAsync('jpg', 50) // 50% compre
 const compressed = await image.toEncodedImageData('jpg', 50)       // 50% compression
 ```
 
+#### HEIC/HEIF
+
+NitroImage supports `HEIC`/`HEIF` format if the host OS natively supports it.
+
+|              | iOS            | Android        |
+|--------------|----------------|----------------|
+| Loading HEIC | ✅             | ✅ (>= SDK 28) |
+| Writing HEIC | ✅ (>= iOS 17) | ❌             |
+
 ### Hooks
 
 #### The `useImage()` hook

packages/react-native-nitro-image/android/src/main/java/com/margelo/nitro/image/HybridImageFactory.kt

@@ -5,7 +5,6 @@ import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import androidx.annotation.Keep
 import com.facebook.common.internal.DoNotStrip
-import com.facebook.react.bridge.ReactApplicationContext
 import com.madebyevan.thumbhash.ThumbHash
 import com.margelo.nitro.NitroModules
 import com.margelo.nitro.core.ArrayBuffer

packages/react-native-nitro-image/android/src/main/java/com/margelo/nitro/image/HybridImageUtils.kt

@@ -1,5 +1,6 @@
 package com.margelo.nitro.image
 
+import android.os.Build
 import androidx.annotation.Keep
 import com.facebook.common.internal.DoNotStrip
 import com.margelo.nitro.core.ArrayBuffer
@@ -10,6 +11,19 @@ import kotlin.io.encoding.ExperimentalEncodingApi
 @DoNotStrip
 @Keep
 class HybridImageUtils: HybridImageUtilsSpec() {
+    override val supportsHeicLoading: Boolean
+        get() {
+            // Since Android 10, HEIF/HEIC is standard.
+            // https://source.android.com/docs/core/camera/heif
+            return Build.VERSION.SDK_INT >= Build.VERSION_CODES.P
+        }
+    override val supportsHeicWriting: Boolean
+        get() {
+            // Android does not support saving HEIF data yet
+            return false
+        }
+
+
     @OptIn(ExperimentalEncodingApi::class)
     override fun thumbHashToBase64String(thumbhash: ArrayBuffer): String {
         val buffer = thumbhash.toByteArray()

packages/react-native-nitro-image/ios/HybridImageFactory.swift

@@ -10,16 +10,6 @@ import NitroModules
 import UniformTypeIdentifiers
 
 class HybridImageFactory: HybridImageFactorySpec {
-  var supportsHEIC: Bool {
-    if #unavailable(iOS 17.0) {
-      // HEIC .heicData() is only available on iOS 17
-      return false
-    }
-    // Check if the type is supported by the OS
-    let types = CGImageDestinationCopyTypeIdentifiers() as! [String]
-    return types.contains(UTType.heic.identifier)
-  }
-  
   /**
    * Load Image from file path
    */

packages/react-native-nitro-image/ios/HybridImageUtils.swift

@@ -7,8 +7,23 @@
 
 import Foundation
 import NitroModules
+import UniformTypeIdentifiers
 
 class HybridImageUtils: HybridImageUtilsSpec {
+  var supportsHeicLoading: Bool {
+    // Check if the type is supported by the OS
+    let types = CGImageDestinationCopyTypeIdentifiers() as! [String]
+    return types.contains(UTType.heic.identifier)
+  }
+  var supportsHeicWriting: Bool {
+    // HEIC .heicData() is only available on iOS 17
+    if #available(iOS 17.0, *) {
+      return true
+    } else {
+      return false
+    }
+  }
+  
   func thumbHashToBase64String(thumbhash: ArrayBuffer) throws -> String {
     let data = thumbhash.toData(copyIfNeeded: false)
     return data.base64EncodedString()

packages/react-native-nitro-image/ios/UIImage+getData.swift

@@ -23,8 +23,8 @@ extension UIImage {
       return data
     case .heic:
       guard #available(iOS 17.0, *) else {
-        throw RuntimeError.error(withMessage: "HEIC is only available on iOS 17.0 or higher! " +
-                                 "Check ImageFactory.supportsHEIC before calling this method.")
+        throw RuntimeError.error(withMessage: "HEIC writing is only available on iOS 17.0 or higher! " +
+                                 "Check ImageUtils.supportsHeicWriting before calling this method.")
       }
       guard let data = self.heicData() else {
         throw RuntimeError.error(withMessage: "Failed to convert \(size.width)x\(size.height) Image to HEIC!")