chore: outsource functions to own utils file

ios/Video/Features/RCTVideoTVUtils.swift

@@ -0,0 +1,49 @@
+import Foundation
+import AVFoundation
+import AVKit
+
+/*!
+ * Collection of helper functions for tvOS specific features
+ */
+
+#if os(tvOS)
+enum RCTVideoTVUtils {
+    static func makeNavigationMarkerGroups(_ chapters: [Chapter]) -> [AVNavigationMarkersGroup] {
+        var metadataGroups = [AVTimedMetadataGroup]()
+
+        // Iterate over the defined chapters and build a timed metadata group object for each.
+        chapters.forEach { chapter in
+            metadataGroups.append(makeTimedMetadataGroup(for: chapter))
+        }
+
+        return [AVNavigationMarkersGroup(title: nil, timedNavigationMarkers: metadataGroups)]
+    }
+
+    static func makeTimedMetadataGroup(for chapter: Chapter) -> AVTimedMetadataGroup {
+        var metadata = [AVMetadataItem]()
+
+        // Create a metadata item that contains the chapter title.
+        let titleItem = RCTVideoUtils.createMetadataItem(for: .commonIdentifierTitle, value: chapter.title)
+        metadata.append(titleItem)
+
+        // Create a time range for the metadata group.
+        let timescale: Int32 = 600
+        let startTime = CMTime(seconds: chapter.startTime, preferredTimescale: timescale)
+        let endTime = CMTime(seconds: chapter.endTime, preferredTimescale: timescale)
+        let timeRange = CMTimeRangeFromTimeToTime(start: startTime, end: endTime)
+
+        // Image
+        if let imgUri = chapter.uri,
+           let uri = URL(string: imgUri),
+           let imgData = try? Data(contentsOf: uri),
+           let image = UIImage(data: imgData),
+           let pngData = image.pngData()
+        {
+            let imageItem = RCTVideoUtils.createMetadataItem(for: .commonIdentifierArtwork, value: pngData)
+            metadata.append(imageItem)
+        }
+
+        return AVTimedMetadataGroup(items: metadata, timeRange: timeRange)
+    }
+}
+#endif