Opus is a totally open, royalty-free, highly versatile audio codec. Opus is unmatched for interactive speech and music transmission over the Internet, but is also intended for storage and streaming applications. It is standardized by the Internet Engineering Task Force (IETF) as RFC 6716 which incorporated technology from Skype's SILK codec and Xiph.Org's CELT codec.

iOS build scripts for the Opus Codec.

1. (Objective-C) Build the static library
2. (Optionally for Swift) Build the framework
3. (Optionally) Use the CocoaPod spec

Download the latest stable tar file and place it into the build/src directory

Note: If it's a new version of opus or if the iOS SDKs changed since the last time you built it, update that version at the top of the build-libopus.sh file.

From the command line, run:

$ ./build-libopus.sh

That will take the tar file and build the static library in a directory called dependencies

Follow the steps above for building the framework from the static library

Open the opus/opus.xcodeproj file, select UniversalTarget with a Generic iOS Device

Build the framework by pressing Run; this will overwrite the framework in the repo root.

Note: this runs a custom build script within Build Phases that will build a universal framework with both simulator and device slices

If we have issues with submitting to the app store w/ the extra simulator slices, view this: https://arsenkin.com/ios-universal-framework.html / https://stackoverflow.com/a/30866648/308315

Ensure the framework includes slices for both simulator and device architectures (x86_64 i386 armv7 armv7s arm64)

$ lipo -info opus.framework/opus

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