This repository is meant to provide some examples for you to better understand the features of the OpenTok iOS SDK. The sample applications are meant to be used with the latest version of the OpenTok iOS SDK. Feel free to copy and modify the source code herein for your own projects. Please consider sharing your modifications with us, especially if they might benefit other developers using the OpenTok iOS SDK. See the License for more information.

1. Get values for your OpenTok API key, session ID, and token. See Obtaining OpenTok Credentials for important information.

2. Install CocoaPods as described in CocoaPods Getting Started.

3. In Terminal, cd to your project directory and type pod install.

4. Reopen your project in Xcode using the new Opentok-iOS-samples.xcworkspace file.

5. In the ViewController.swift file, replace the following empty strings with the corresponding API Key, session ID, and token values:

   // *** Fill the following variables using your own Project info  ***
   // ***            https://tokbox.com/account/#/                  ***
   // Replace with your OpenTok API key
   let kApiKey = ""
   // Replace with your generated session ID
   let kSessionId = ""
   // Replace with your generated token
   let kToken = ""

6. Use Xcode to build and run the app on an iOS simulator or device.

Each of the projects build on the lessons of the previous. After reviewing each, you will have an understanding of the OpenTok iOS SDK API. Additionally, you will be able to get started with writing your own extensions to the default capture implementations provided herein.

1. Basics -- This basic application demonstrates a short path to getting started with the OpenTok iOS SDK.

2. Custom Video Driver -- This project provides classes that implement the OTVideoCapture and OTVideoRender interfaces of the core Publisher and Subscriber classes. Using these modules, we can see the basic workflow of sourcing video frames from the device camera in and out of OpenTok, via the OTPublisherKit and OTSubscriberKit interfaces.

3. Custom-Audio-Driver -- This project demonstrate how to use an external audio source with the OpenTok SDK. This project utilizes CoreAudio and the AUGraph API to create an audio session suitable for voice and video communications.

4. Screen-Sharing -- This project demonstrates how to use a custom video capturer to publish a stream that uses a UI view (instead of a camera) as the video source.

5. Live-Photo-Capture -- This project extends the video capture module implemented in project 2, and demonstrates how the AVFoundation media capture APIs can be used to simultaneously stream video and capture high-resolution photos from the same camera.

6. Simple-Multiparty -- This project demonstrates how to use the OpenTok iOS SDK for a multi-party call. The application publishes audio/video from an iOS device and can connect to multiple subscribers. However it shows only one subscriber video at a time due to CPU limitations on iOS devices.

To use the OpenTok platform you need a session ID, token, and API Key. You can get these values by creating a project on your OpenTok Account Page and scrolling down to the Project Tools section of your Project page. For production deployment, you must generate the session ID and token values using one of the OpenTok Server SDKs.