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 version 2.3 and higher 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.

Each of the six 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. Hello World - This basic application demonstrates a short path to getting started with the OpenTok iOS SDK.

2. Let's Build OTPublisher - 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. 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.

4. Overlay Graphics - This project shows how to overlay graphics on publisher and subscriber views and uses SVG graphic format for icons. This project barrows publisher and subscribers modules implemented in project 2.

5. Multi-Party Call - 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.

6. Audio Levels - This project demonstrates how to use the OpenTok iOS SDK for audio-only multi party calls. Both publisher and subscribers are audio-based only. This application also shows how to use the audio level API along with an audio meter UI for visualization of publisher and subscriber audio levels.

Each project includes a symlink to OpenTok.framework, up one directory level from the root of this repository. If you are reading this from a distribution tarball of the OpenTok iOS SDK, then these links should work fine. If you have cloned this repository directly, you will have to update the links to point to your copy of OpenTok.framework.

This README and the sample applications are maintained separately from releases of the OpenTok iOS SDK. A snapshot of this repository is included in the distribution of the SDK. To get the latest updates to these example applications and accompanying documentation, be sure to clone the sample repository itself: https://github.com/opentok/opentok-ios-sdk-samples/