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