VEX-5682: iOS Swift Conversion (#11)

Converts ios implementation from objective-c to swift.

ios/Video/DataStructures/DRMParams.swift

@@ -0,0 +1,30 @@
+struct DRMParams {
+    let type: String?
+    let licenseServer: String?
+    let headers: Dictionary<String,Any>?
+    let contentId: String?
+    let certificateUrl: String?
+    let base64Certificate: Bool?
+    
+    let json: NSDictionary?
+    
+    init(_ json: NSDictionary!) {
+        guard json != nil else {
+            self.json = nil
+            self.type = nil
+            self.licenseServer = nil
+            self.contentId = nil
+            self.certificateUrl = nil
+            self.base64Certificate = nil
+            self.headers = nil
+            return
+        }
+        self.json = json
+        self.type = json["type"] as? String
+        self.licenseServer = json["licenseServer"] as? String
+        self.contentId = json["contentId"] as? String
+        self.certificateUrl = json["certificateUrl"] as? String
+        self.base64Certificate = json["base64Certificate"] as? Bool
+        self.headers = json["headers"] as? Dictionary<String,Any>
+    }
+}

ios/Video/DataStructures/SelectedTrackCriteria.swift

@@ -0,0 +1,18 @@
+struct SelectedTrackCriteria {
+    let type: String
+    let value: Any?
+    
+    let json: NSDictionary?
+    
+    init(_ json: NSDictionary!) {
+        guard json != nil else {
+            self.json = nil
+            self.type = ""
+            self.value = nil
+            return
+        }
+        self.json = json
+        self.type = json["type"] as? String ?? ""
+        self.value = json["value"]
+    }
+}

ios/Video/DataStructures/TextTrack.swift

@@ -0,0 +1,25 @@
+
+struct TextTrack {
+    let type: String
+    let language: String
+    let title: String
+    let uri: String
+    
+    let json: NSDictionary?
+    
+    init(_ json: NSDictionary!) {
+        guard json != nil else {
+            self.json = nil
+            self.type = ""
+            self.language = ""
+            self.title = ""
+            self.uri = ""
+            return
+        }
+        self.json = json
+        self.type = json["type"] as? String ?? ""
+        self.language = json["language"] as? String ?? ""
+        self.title = json["title"] as? String ?? ""
+        self.uri = json["uri"] as? String ?? ""
+    }
+}

ios/Video/DataStructures/VideoSource.swift

@@ -0,0 +1,31 @@
+
+struct VideoSource {
+    let type: String?
+    let uri: String?
+    let isNetwork: Bool
+    let isAsset: Bool
+    let shouldCache: Bool
+    let requestHeaders: Dictionary<String,Any>?
+    
+    let json: NSDictionary?
+    
+    init(_ json: NSDictionary!) {
+        guard json != nil else {
+            self.json = nil
+            self.type = nil
+            self.uri = nil
+            self.isNetwork = false
+            self.isAsset = false
+            self.shouldCache = false
+            self.requestHeaders = nil
+            return
+        }
+        self.json = json
+        self.type = json["type"] as? String
+        self.uri = json["uri"] as? String
+        self.isNetwork = json["isNetwork"] as? Bool ?? false
+        self.isAsset = json["isAsset"] as? Bool ?? false
+        self.shouldCache = json["shouldCache"] as? Bool ?? false
+        self.requestHeaders = json["requestHeaders"] as? Dictionary<String,Any>
+    }
+}