76 lines
2.8 KiB
Swift
76 lines
2.8 KiB
Swift
import AVFoundation
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enum RCTVideoSave {
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static func save(
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options:NSDictionary!,
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resolve: @escaping RCTPromiseResolveBlock,
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reject:@escaping RCTPromiseRejectBlock,
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playerItem: AVPlayerItem?
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) {
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let asset:AVAsset! = playerItem?.asset
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guard asset != nil else {
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reject("ERROR_ASSET_NIL", "Asset is nil", nil)
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return
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}
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guard let exportSession = AVAssetExportSession(asset: asset, presetName:AVAssetExportPresetHighestQuality) else {
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reject("ERROR_COULD_NOT_CREATE_EXPORT_SESSION", "Could not create export session", nil)
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return
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}
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var path:String! = nil
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path = RCTVideoSave.generatePathInDirectory(
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directory: URL(fileURLWithPath: RCTVideoSave.cacheDirectoryPath() ?? "").appendingPathComponent("Videos").path,
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withExtension: ".mp4")
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let url:NSURL! = NSURL.fileURL(withPath: path) as NSURL
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exportSession.outputFileType = AVFileType.mp4
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exportSession.outputURL = url as URL?
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exportSession.videoComposition = playerItem?.videoComposition
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exportSession.shouldOptimizeForNetworkUse = true
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exportSession.exportAsynchronously(completionHandler: {
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switch (exportSession.status) {
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case .failed:
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reject("ERROR_COULD_NOT_EXPORT_VIDEO", "Could not export video", exportSession.error)
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break
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case .cancelled:
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reject("ERROR_EXPORT_SESSION_CANCELLED", "Export session was cancelled", exportSession.error)
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break
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default:
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resolve(["uri": url.absoluteString])
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break
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}
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})
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}
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static func generatePathInDirectory(directory: String?, withExtension `extension`: String?) -> String? {
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let fileName = UUID().uuidString + (`extension` ?? "")
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RCTVideoSave.ensureDirExists(withPath: directory)
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return URL(fileURLWithPath: directory ?? "").appendingPathComponent(fileName).path
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}
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static func cacheDirectoryPath() -> String? {
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let array = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).map(\.path)
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return array[0]
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}
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static func ensureDirExists(withPath path: String?) -> Bool {
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var isDir: ObjCBool = false
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var error: Error?
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let exists = FileManager.default.fileExists(atPath: path ?? "", isDirectory: &isDir)
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if !(exists && isDir.boolValue) {
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do {
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try FileManager.default.createDirectory(atPath: path ?? "", withIntermediateDirectories: true, attributes: nil)
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} catch {
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}
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if error != nil {
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return false
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}
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}
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return true
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}
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}
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