247 lines
10 KiB
Swift
247 lines
10 KiB
Swift
import AVFoundation
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import MediaAccessibility
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let RCTVideoUnset = -1
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// MARK: - RCTPlayerOperations
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/*!
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* Collection of mutating functions
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*/
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enum RCTPlayerOperations {
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static func setSideloadedText(player: AVPlayer?, textTracks: [TextTrack], criteria: SelectedTrackCriteria?) {
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let type = criteria?.type
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let trackCount: Int! = player?.currentItem?.tracks.count ?? 0
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// The first few tracks will be audio & video track
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var firstTextIndex = 0
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for i in 0 ..< trackCount where player?.currentItem?.tracks[i].assetTrack?.hasMediaCharacteristic(.legible) ?? false {
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firstTextIndex = i
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break
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}
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var selectedTrackIndex: Int = RCTVideoUnset
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if type == "disabled" {
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// Select the last text index which is the disabled text track
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selectedTrackIndex = trackCount - firstTextIndex
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} else if type == "language" {
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let selectedValue = criteria?.value as? String
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for i in 0 ..< textTracks.count {
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let currentTextTrack = textTracks[i]
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if selectedValue == currentTextTrack.language {
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selectedTrackIndex = i
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break
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}
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}
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} else if type == "title" {
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let selectedValue = criteria?.value as? String
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for i in 0 ..< textTracks.count {
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let currentTextTrack = textTracks[i]
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if selectedValue == currentTextTrack.title {
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selectedTrackIndex = i
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break
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}
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}
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} else if type == "index" {
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if let value = criteria?.value, let index = value as? Int {
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if textTracks.count > index {
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selectedTrackIndex = index
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}
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}
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}
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// in the situation that a selected text track is not available (eg. specifies a textTrack not available)
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if (type != "disabled") && selectedTrackIndex == RCTVideoUnset {
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let captioningMediaCharacteristics = MACaptionAppearanceCopyPreferredCaptioningMediaCharacteristics(.user)
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let captionSettings = captioningMediaCharacteristics as? [AnyHashable]
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if (captionSettings?.contains(AVMediaCharacteristic.transcribesSpokenDialogForAccessibility)) != nil {
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selectedTrackIndex = 0 // If we can't find a match, use the first available track
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let systemLanguage = NSLocale.preferredLanguages.first
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for i in 0 ..< textTracks.count {
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let currentTextTrack = textTracks[i]
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if systemLanguage == currentTextTrack.language {
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selectedTrackIndex = i
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break
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}
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}
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}
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}
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for i in firstTextIndex ..< trackCount {
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var isEnabled = false
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if selectedTrackIndex != RCTVideoUnset {
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isEnabled = i == selectedTrackIndex + firstTextIndex
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}
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player?.currentItem?.tracks[i].isEnabled = isEnabled
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}
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}
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// UNUSED
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static func setStreamingText(player: AVPlayer?, criteria: SelectedTrackCriteria?) async {
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let type = criteria?.type
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var mediaOption: AVMediaSelectionOption!
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guard let group = await RCTVideoAssetsUtils.getMediaSelectionGroup(asset: player?.currentItem?.asset, for: .legible) else {
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return
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}
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if type == "disabled" {
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// Do nothing. We want to ensure option is nil
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} else if (type == "language") || (type == "title") {
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let value = criteria?.value as? String
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for i in 0 ..< group.options.count {
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let currentOption: AVMediaSelectionOption! = group.options[i]
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var optionValue: String!
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if type == "language" {
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optionValue = currentOption.extendedLanguageTag
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} else {
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optionValue = currentOption.commonMetadata.map(\.value)[0] as! String
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}
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if value == optionValue {
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mediaOption = currentOption
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break
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}
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}
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// } else if ([type isEqualToString:@"default"]) {
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// option = group.defaultOption; */
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} else if type == "index" {
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if let value = criteria?.value, let index = value as? Int {
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if group.options.count > index {
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mediaOption = group.options[index]
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}
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}
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} else { // default. invalid type or "system"
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#if os(tvOS)
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// Do noting. Fix for tvOS native audio menu language selector
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#else
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await player?.currentItem?.selectMediaOptionAutomatically(in: group)
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return
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#endif
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}
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#if os(tvOS)
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// Do noting. Fix for tvOS native audio menu language selector
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#else
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// If a match isn't found, option will be nil and text tracks will be disabled
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await player?.currentItem?.select(mediaOption, in: group)
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#endif
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}
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static func setMediaSelectionTrackForCharacteristic(player: AVPlayer?, characteristic: AVMediaCharacteristic, criteria: SelectedTrackCriteria?) async {
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let type = criteria?.type
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var mediaOption: AVMediaSelectionOption!
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guard let group = await RCTVideoAssetsUtils.getMediaSelectionGroup(asset: player?.currentItem?.asset, for: characteristic) else {
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return
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}
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if type == "disabled" {
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// Do nothing. We want to ensure option is nil
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} else if (type == "language") || (type == "title") {
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let value = criteria?.value as? String
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for i in 0 ..< group.options.count {
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let currentOption: AVMediaSelectionOption! = group.options[i]
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var optionValue: String!
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if type == "language" {
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optionValue = currentOption.extendedLanguageTag
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} else {
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optionValue = currentOption.commonMetadata.map(\.value)[0] as? String
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}
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if value == optionValue {
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mediaOption = currentOption
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break
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}
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}
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// } else if ([type isEqualToString:@"default"]) {
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// option = group.defaultOption; */
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} else if type == "index" {
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if let value = criteria?.value, let index = value as? Int {
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if group.options.count > index {
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mediaOption = group.options[index]
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}
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}
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} else { // default. invalid type or "system"
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await player?.currentItem?.selectMediaOptionAutomatically(in: group)
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return
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}
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// If a match isn't found, option will be nil and text tracks will be disabled
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await player?.currentItem?.select(mediaOption, in: group)
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}
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static func seek(player: AVPlayer, playerItem: AVPlayerItem, paused: Bool, seekTime: Float, seekTolerance: Float, completion: @escaping (Bool) -> Void) {
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let timeScale = 1000
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let cmSeekTime: CMTime = CMTimeMakeWithSeconds(Float64(seekTime), preferredTimescale: Int32(timeScale))
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let current: CMTime = playerItem.currentTime()
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let tolerance: CMTime = CMTimeMake(value: Int64(seekTolerance), timescale: Int32(timeScale))
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guard CMTimeCompare(current, cmSeekTime) != 0 else {
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// skip if there is no diff in current time and seek time
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return
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}
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if !paused { player.pause() }
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player.seek(to: cmSeekTime, toleranceBefore: tolerance, toleranceAfter: tolerance, completionHandler: { (finished: Bool) in
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completion(finished)
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})
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}
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static func configureAudio(ignoreSilentSwitch: String, mixWithOthers: String, audioOutput: String) {
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let audioSession: AVAudioSession! = AVAudioSession.sharedInstance()
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var category: AVAudioSession.Category?
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var options: AVAudioSession.CategoryOptions?
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if ignoreSilentSwitch == "ignore" {
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category = audioOutput == "earpiece" ? AVAudioSession.Category.playAndRecord : AVAudioSession.Category.playback
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} else if ignoreSilentSwitch == "obey" {
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category = AVAudioSession.Category.ambient
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}
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if mixWithOthers == "mix" {
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options = .mixWithOthers
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} else if mixWithOthers == "duck" {
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options = .duckOthers
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}
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if let category, let options {
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do {
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try audioSession.setCategory(category, options: options)
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} catch {
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debugPrint("[RCTPlayerOperations] Problem setting up AVAudioSession category and options. Error: \(error).")
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#if !os(tvOS)
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// Handle specific set category and option combination error
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// setCategory:AVAudioSessionCategoryPlayback withOptions:mixWithOthers || duckOthers
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// Failed to set category, error: 'what' Error Domain=NSOSStatusErrorDomain
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// https://developer.apple.com/forums/thread/714598
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if #available(iOS 16.0, *) {
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do {
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debugPrint("[RCTPlayerOperations] Reseting AVAudioSession category to playAndRecord with defaultToSpeaker options.")
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try audioSession.setCategory(
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audioOutput == "earpiece" ? AVAudioSession.Category.playAndRecord : AVAudioSession.Category.playback,
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options: AVAudioSession.CategoryOptions.defaultToSpeaker
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)
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} catch {
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debugPrint("[RCTPlayerOperations] Reseting AVAudioSession category and options problem. Error: \(error).")
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}
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}
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#endif
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}
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} else if let category, options == nil {
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do {
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try audioSession.setCategory(category)
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} catch {
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debugPrint("[RCTPlayerOperations] Problem setting up AVAudioSession category. Error: \(error).")
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}
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} else if category == nil, let options {
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do {
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try audioSession.setCategory(audioSession.category, options: options)
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} catch {
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debugPrint("[RCTPlayerOperations] Problem setting up AVAudioSession options. Error: \(error).")
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}
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}
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}
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}
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