iOS Swift Conversion (#2527)

Converts iOS implementation from Objective-c to Swift

# During the conversion process some updates to the code structure were also made
- Modularize codebase from single file to smaller focused files
- Untangled large nested IF statements
- Added more null checks, since Swift is more strict with null pointers
- Added property to allow for decoding of local video sources with self contained key for offline playback
- Updates example apps to test react-native 0.63.4 and uses auto native dependency imports for android and ios

README.md

@@ -33,6 +33,10 @@ Version 3.0 features a number of changes to existing behavior. See [Updating](#u
   * [Android](#android-installation)
   * [Windows](#windows-installation)
   * [react-native-dom](#react-native-dom-installation)
+* [Examples](#examples)
+  * [iOS](#ios-example)
+  * [Android](#android-example)
+  * [Windows](#windows-example)
 * [Usage](#usage)
 * [iOS App Transport Security](#ios-app-transport-security)
 * [Audio Mixing](#audio-mixing)
@@ -69,6 +73,12 @@ Run `npx pod-install`. Linking is not required in React Native 0.60 and above.
 
 Run `react-native link react-native-video` to link the react-native-video library.
 
+#### Enable Static Linking for dependencies in your ios project Podfile
+
+Add `use_frameworks! :linkage => :static` just under `platform :ios` in your ios project Podfile.
+
+[See the example ios project for reference](examples/basic/ios/Podfile#L5)
+
 #### Using CocoaPods (required to enable caching)
 
 Setup your Podfile like it is described in the [react-native documentation](https://facebook.github.io/react-native/docs/integration-with-existing-apps#configuring-cocoapods-dependencies). 
@@ -166,6 +176,11 @@ android.enableJetifier=true
 
 #### **MainApplication.java**
 
+If using com.facebook.react.PackageList to auto import native dependencies, there are no updates required here. Please see the android example project for more details.
+/examples/basic/android/app/src/main/java/com/videoplayer/MainApplication.java
+
+##### For manual linking
+
 On top, where imports are:
 
 ```java
@@ -257,6 +272,25 @@ const ReactNativeDomOptions = {
 ```
 </details>
 
+## Examples
+
+Run `yarn xbasic install` before running any of the examples.
+
+### iOS Example
+```
+yarn xbasic ios
+```
+
+### Android Example
+```
+yarn xbasic android
+```
+
+### Windows Example
+```
+yarn xbasic windows
+```
+
 ## Usage
 
 ```javascript
@@ -926,6 +960,18 @@ Adjust the volume.
 
 Platforms: all
 
+#### localSourceEncryptionKeyScheme
+Set the url scheme for stream encryption key for local assets
+
+Type: String
+
+Example:
+```
+localSourceEncryptionKeyScheme="my-offline-key"
+```
+
+Platforms: iOS
+
 
 ### Event props
 
@@ -1404,6 +1450,16 @@ To enable audio to play in background on iOS the audio session needs to be set t
 
 ## Updating
 
+### Version 6.0.0
+
+#### iOS
+
+In your project Podfile add support for static dependency linking. This is required to support the new Promises subdependency in the iOS swift conversion.
+
+Add `use_frameworks! :linkage => :static` just under `platform :ios` in your ios project Podfile.
+
+[See the example ios project for reference](examples/basic/ios/Podfile#L5)
+
 ### Version 5.0.0
 
 Probably you want to update your gradle version: