OSCine is an easy to use yet robust Swift client and server implementation of Open Sound Control v1.1.
The motivations and goals for this package are:
- Ease of use
- No third-party dependencies
- Close adherance to OSC v1.1 specification
- Integrated TCP, UDP, and Multicast network support*
- Integrated Bonjour advertisement and browsing support
- Integrated OSLog support
- SLIP support via Apple Network Protocol Framer
Future versions will likely support Swift 5.5 async operations.
* While OSCine has fully integrated network support, access to packet creation and parsing is available so that alternate transport libraries could be utilized if desired.
IMPORTANT: Multicast support on iOS/iPadOS 14 and later requires entitlements available only directly from Apple.
This package was initially created for my own uses as I found other Swift OSC packages lacking, primarily in their dependence upon third-party libraries. I am making this available via the included MIT style license in hopes others may find it useful. In particular I'm hoping this may be of interest to others attempting to implement Apple Netwok Protocol Framers. I found Apple documentation on framers to be seriously lacking and could find no open source examples. The included SLIP framer should be generally useful to anyone requiring SLIP support however it is likely more useful as an example of a 'data encoding' style protocol framer.
OSCine follows the OSC v1.1 specification closely and relies upon terminology from the OSC spec heavily throughout. If you are not familar with OSC and its paradigms it is strongly suggested that you review them before proceeding:
http://cnmat.org/OpenSoundControl/OSC-spec.html
http://opensoundcontrol.org/spec-1_0.html
http://opensoundcontrol.org/files/2009-NIME-OSC-1.1.pdf
Usage is intended to be as straightforward as possible assuming familiarity with OSC and its terminology. The representative examples below, and included test suite, should hopefully get you started. Further information and details can be found as Swift Documentation Comments in the code itself.
let client = OSCClientUDP()
client.delegate = self //for connection state notifications - see OSCClientDelegate
client.connect(serviceName: "MyMixer", timeout: 10.0)
//after connection state change to: .ready
let bundle = OSCBundle(timeTag: OSCTimeTag.immediate,
bundleElements: [
OSCMessage(addressPattern: "/mixer/*/mute[0-9]", arguments: [.true]),
OSCMessage(addressPattern: "/mixer/*/solo[0-9]", arguments: [.false]),
OSCMessage(addressPattern: "/mixer/*/fader[0-9]", arguments: [.float(0.0)]),
OSCMessage(addressPattern: "/mixer/*/eq", arguments: [.float(0.0), .float(0.0), .float(0.0)]),
OSCMessage(addressPattern: "/mixer/*/label", arguments: [.string("")]),
])
try client.send(bundle)
class MyMethod: OSCMethod {
var addressPattern: OSCAddressPattern
var requiredArguments: OSCArgumentTypeTagArray? = nil
init(addressPattern: OSCAddressPattern, requiredArguments: OSCArgumentTypeTagArray? = nil) {
self.addressPattern = addressPattern
self.requiredArguments = requiredArguments
}
func handleMessage(_ message: OSCMessage, for match: OSCPatternMatchType, at timeTag: OSCTimeTag?) {
print("Received message: \(message.addressPattern)",
"with match: \(match)",
"arguments: \(String(describing: message.arguments)),
"time tag: \(String(describing: timeTag?.date))"")
}
}
let server = OSCServerUDP()
server.delegate = self //for listener state notifications - see OSCServerDelegate
try server.register(methods: [MyMethod(addressPattern: "/mixer/main/mute1", requiredArguments: [.anyBoolean]),
MyMethod(addressPattern: "/mixer/main/solo1", requiredArguments: [.anyBoolean]),
MyMethod(addressPattern: "/mixer/main/fader1", requiredArguments: [.float, .optional(.float)]),
MyMethod(addressPattern: "/mixer/main/eq", requiredArguments: [.anyNumber, .anyNumber, .anyNumber]),
MyMethod(addressPattern: "/mixer/main/label"])
try server.listen(serviceName: "MyMixer")
let mcast = OSCMulticast()
mcast.delegate = self //for group state notifications - see OSCMulticastDelegate
try mcast.joinGroup(on: "224.0.0.251", port: 12345)
//Register methods if you care to process or monitor messages sent to the group
try mcast.register(methods: [MyMethod(addressPattern: "/mixer/main/mute1", requiredArguments: [.anyBoolean]),
MyMethod(addressPattern: "/mixer/main/solo1", requiredArguments: [.anyBoolean]),
MyMethod(addressPattern: "/mixer/main/fader1", requiredArguments: [.float, .optional(.float)]),
MyMethod(addressPattern: "/mixer/main/eq", requiredArguments: [.anyNumber, .anyNumber, .anyNumber]),
MyMethod(addressPattern: "/mixer/main/label")
//after connection state change to: .ready
//Note that Messages sent to the group will also be delivered to any Methods you register on the Multicast instance.
let bundle = OSCBundle(timeTag: OSCTimeTag.immediate,
bundleElements: [
OSCMessage(addressPattern: "/mixer/*/mute[0-9]", arguments: [.true]),
OSCMessage(addressPattern: "/mixer/*/solo[0-9]", arguments: [.false]),
OSCMessage(addressPattern: "/mixer/*/fader[0-9]", arguments: [.float(0.0)]),
OSCMessage(addressPattern: "/mixer/*/eq", arguments: [.float(0.0), .float(0.0), .float(0.0)]),
OSCMessage(addressPattern: "/mixer/*/label", arguments: [.string("")]),
])
try mcast.send(bundle)
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