229 lines
9.2 KiB
Swift
229 lines
9.2 KiB
Swift
import AVFoundation
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import MediaAccessibility
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import Promises
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let RCTVideoUnset = -1
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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 textTracks:[TextTrack]! = textTracks ?? RCTVideoUtils.getTextTrackInfo(player)
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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:Int = 0
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for i in 0..<(trackCount) {
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if 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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}
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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?) {
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let type = criteria?.type
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let group:AVMediaSelectionGroup! = player?.currentItem?.asset.mediaSelectionGroup(forMediaCharacteristic: AVMediaCharacteristic.legible)
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var mediaOption:AVMediaSelectionOption!
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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 TARGET_OS_TV
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// Do noting. Fix for tvOS native audio menu language selector
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#else
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player?.currentItem?.selectMediaOptionAutomatically(in: group)
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return
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#endif
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}
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#if TARGET_OS_TV
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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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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?) {
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let type = criteria?.type
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let group:AVMediaSelectionGroup! = player?.currentItem?.asset.mediaSelectionGroup(forMediaCharacteristic: characteristic)
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var mediaOption:AVMediaSelectionOption!
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guard group != nil else { return }
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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 if let group = group { // default. invalid type or "system"
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player?.currentItem?.selectMediaOptionAutomatically(in: group)
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return
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}
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if let group = group {
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// If a match isn't found, option will be nil and text tracks will be disabled
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player?.currentItem?.select(mediaOption, in:group)
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}
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}
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static func seek(player: AVPlayer, playerItem:AVPlayerItem, paused:Bool, seekTime:Float, seekTolerance:Float) -> Promise<Bool> {
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let timeScale:Int = 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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return Promise<Bool>(on: .global()) { fulfill, reject in
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guard CMTimeCompare(current, cmSeekTime) != 0 else {
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reject(NSError(domain: "", code: 0, userInfo: nil))
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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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fulfill(finished)
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})
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}
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}
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static func configureAudio(ignoreSilentSwitch:String, mixWithOthers:String) {
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let session:AVAudioSession! = AVAudioSession.sharedInstance()
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var category:AVAudioSession.Category? = nil
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var options:AVAudioSession.CategoryOptions? = nil
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if (ignoreSilentSwitch == "ignore") {
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category = AVAudioSession.Category.playAndRecord
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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 = category, let options = options {
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do {
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try session.setCategory(category, options: options)
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} catch {
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}
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} else if let category = category, options == nil {
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do {
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try session.setCategory(category)
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} catch {
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}
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} else if category == nil, let options = options {
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do {
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try session.setCategory(session.category, options: options)
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} catch {
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}
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}
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}
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}
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