更新 AVURLAssetExtension.swift

MemoryChainKit/Sources/Extensions/AVFoundation/AVURLAssetExtension.swift

@@ -0,0 +1,32 @@
+
+
+//Copyright belongs to Marc Steven in 8th Nov, 2023
+
+
+import AVFoundation
+import Foundation
+
+public extension AVURLAsset {
+    /// Audio format for  the file in the URL asset
+    var audioFormat: AVAudioFormat? {
+        // pull the input format out of the audio file...
+        if let source = try? AVAudioFile(forReading: url) {
+            return source.fileFormat
+
+            // if that fails it might be a video, so check the tracks for audio
+        } else {
+            let audioTracks = tracks.filter { $0.mediaType == .audio }
+
+            guard !audioTracks.isEmpty else { return nil }
+
+            let formatDescriptions = audioTracks.compactMap {
+                $0.formatDescriptions as? [CMFormatDescription]
+            }.reduce([], +)
+
+            let audioFormats: [AVAudioFormat] = formatDescriptions.compactMap {
+                AVAudioFormat(cmAudioFormatDescription: $0)
+            }
+            return audioFormats.first
+        }
+    }
+}