FastOSC

FastOSC is a fast and memory-optimised C# OSC (Open Sound Control) library for .NET8+.

Features

• High Performance: Designed for speed and low memory usage.
• Ease of Use: Simple and intuitive API.
• Compatibility: Supports the full 1.0 spec. Extended support for all .Net encoding types including ASCII, UTF-8, and Unicode.

Fully Supported Types

• int32 (Int32)
• int64 (Int64 / Long)
• float32 (Single)
• float64 (Double)
• String (String / Symbol)
• Blob (Byte[])
• TimeTag (UInt64 / ULong / DateTime)
• Single characters (Char)
• 32 bit RGBA color (OSCRGBA)
• 4 byte MIDI message (OSCMidi)
• True (Boolean)
• False (Boolean)
• Nil (null)
• Infinitum (Single.PositiveInfinity)
• Nested arrays (Object?[])
• Bundles (OSCBundle)

Usage

var sender = new OSCSender();
await sender.ConnectAsync(new IPEndPoint(IPAddress.Loopback, 9000));

var message = new OSCMessage("/address/test", new OSCMidi(1, 1, 1, 1));
sender.send(message);

var receiver = new OSCReceiver();
receiver.Connect(new IPEndPoint(IPAddress.Loopback, 9001));
receiver.OnMessageReceived += message => { };
receiver.OnBundleReceived += bundle => { };

If you don't want to use the built-in sender and receiver:

var message = new OSCMessage("/address/test", new OSCMidi(1, 1, 1, 1));
var data = OSCEncoder.Encode(message);

var data = new byte[];

var packet = OSCDecoder.Decode(data);
if (!packet.IsValid) return;

if (packet.IsBundle)
    // handle bundle
else
    // handle message

Benchmarks

All benchmarks were ran with the address /address/test.

Encoding and decoding an OSCMidi value:

Method	Mean	Error	StdDev	Op/s	Gen0	Allocated
Encode	53.82 ns	1.103 ns	3.020 ns	18,580,512.0	0.0105	88 B
Decode	42.27 ns	0.851 ns	1.599 ns	23,657,956.0	0.0200	168 B

Encoding and decoding 3 floats values:

Method	Mean	Error	StdDev	Op/s	Gen0	Allocated
Encode	59.40 ns	1.172 ns	1.523 ns	16,835,787.8	0.0124	104 B
Decode	51.94 ns	1.051 ns	1.330 ns	19,251,212.6	0.0277	232 B