Support using data provider to get live photo data

Sources/General/ImageSource/ImageDataProvider.swift

@@ -52,6 +52,14 @@ public protocol ImageDataProvider: Sendable {
     var contentURL: URL? { get }
 }
 
+extension ImageDataProvider {
+    func data() async throws -> Data {
+        try await withCheckedThrowingContinuation { continuation in
+            data(handler: { continuation.resume(with: $0) })
+        }
+    }
+}
+
 public extension ImageDataProvider {
     var contentURL: URL? { return nil }
     func convertToSource() -> Source {

Sources/General/ImageSource/LivePhotoSource.swift

@@ -57,19 +57,20 @@ public struct LivePhotoResource: Sendable {
         }
     }
     
-    public let resource: any Resource
+    public let dataSource: Source
     public let referenceFileType: FileType
     
-    var cacheKey: String { resource.cacheKey }
-    var downloadURL: URL { resource.downloadURL }
+    var cacheKey: String { dataSource.cacheKey }
+    var downloadURL: URL? { dataSource.url }
     
     public init(downloadURL: URL, cacheKey: String? = nil, fileType: FileType? = nil) {
-        resource = KF.ImageResource(downloadURL: downloadURL, cacheKey: cacheKey)
+        let resource = KF.ImageResource(downloadURL: downloadURL, cacheKey: cacheKey)
+        dataSource = .network(resource)
         referenceFileType = fileType ?? resource.guessedFileType
     }
     
     public init(resource: any Resource, fileType: FileType? = nil) {
-        self.resource = resource
+        self.dataSource = .network(resource)
         referenceFileType = fileType ?? resource.guessedFileType
     }
 }

Sources/General/KingfisherError.swift

@@ -578,7 +578,7 @@ extension KingfisherError.CacheErrorReason {
             return "The disk storage is not ready to use yet at URL: '\(cacheURL)'. " +
                 "This is usually caused by extremely lack of disk space. Ask users to free up some space and restart the app."
         case .missingLivePhotoResourceOnDisk(let resource):
-            return "The live photo resource '\(resource.downloadURL)' is missing in the cache. Usually a re-download" +
+            return "The live photo resource '\(resource)' is missing in the cache. Usually a re-download" +
             " can fix this issue."
         }
     }

Sources/General/KingfisherManager+LivePhoto.swift

@@ -173,11 +173,22 @@ extension KingfisherManager {
             
             for resource in resources {
                 group.addTask {
-                    let downloadedResource = try await downloader.downloadLivePhotoResource(
-                        with: resource.downloadURL,
-                        options: options
-                    )
-
+                    
+                    let downloadedResource: LivePhotoResourceDownloadingResult
+                    
+                    switch resource.dataSource {
+                    case .network(let urlResource):
+                        downloadedResource = try await downloader.downloadLivePhotoResource(
+                            with: urlResource.downloadURL,
+                            options: options
+                        )
+                    case .provider(let provider):
+                        downloadedResource = try await LivePhotoResourceDownloadingResult(
+                            originalData: provider.data(),
+                            url: provider.contentURL
+                        )
+                    }
+                     
                     // We need to specify the extension so the file is saved correctly. Live photo loading requires
                     // the file extension to be correct. Otherwise, a 3302 error will be thrown.
                     // https://developer.apple.com/documentation/photokit/phphotoserror/code/invalidresource