Simple OSC Output/Input Examples (4.23.1)

Development Audio
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For anyone interested here are four simple OSC output patches using the new 4.23.1 beta OSC Blueprints.

Sending simple OSC messages: https://ccrma.stanford.edu/~rob/ue4/ue4_4.23.1.OSC.png

Receiving simple OSC messages: https://ccrma.stanford.edu/~rob/ue4/…SC_receive.png

Sending bundles of messages: https://ccrma.stanford.edu/~rob/ue4/…OSC_bundle.png

Parsing out 2 different namespaces for incoming messages: https://ccrma.stanford.edu/~rob/ue4/ue4_4.23.1.OSC_receive_2namespaces.png

*Note: In the receiving example, OSC is being sent from another computer, hence the “AddWhitelistedClient” node. That IP could also have been added in the CreateOSCServer node. Also, these are just trial/error working versions so far, not sure if they’re ideal examples.

p.s Thanks Aaron, Ethan, Arthur and team! Built-in OSC!! *

2 Likes
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Thanks guys!

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Hi Rob, I’m trying to re-create your Receiving example, but I’m new to blueprints and having some problems understanding:

  • what is the variable type used for your Received OSCMessage variable and your My OSC Server variable?
    - I see that with the OSC plugin there a few new OSC variable types available, I assume Recieved OSCMessage ] uses this but not sure about the OSC server, OSCAddress?

  • what is connecting to and triggering the Custom Event OSCMessageReceived ] node?

  • I never tried to make a custom event before, I was able to sort of recreate yours but I don’t know how yours has a message variable input, mine just has target, is yours a specific OSC event dispatcher type?

OSC_Help.png
OSC_Help.png709×431 64.9 KB

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  1. Right Click and Create Custom Event - give it a name (eg OSCMessage_Event)

  2. Drag the Red output from the OSCMessage_Event object onto the Red Event input on the Bind Event object

  3. Right click on the OSCMessage_Event object and Refresh Nodes

  4. A Blue message output should appear on the OSCMessage_Event object

  5. Right click on the Blue output on the OSCMessage_Event object and choose ‘promote to variable’ - this creates a SET new variable (of type OSC Message)

  6. You can then re-name this new variable to something (eg Received OSCMessage)

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For anyone who is struggling to get this to work, on a local connection you have to set the receive IP address to 127.0.01, leaving it blank won’t. Also make sure to check ‘start listening’.

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Cool, thanks for doing this. Looking forward to my next project

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Hi! I use OSC quite often for my projects but have up til now used Monseur Gustav’s plugin (I made the youtube how-to video). I’m quite keen to use Epic’s implementation as it seems it should be more supported and possibly more stable. I’ve been trying to make a component based message handler but have found a few issues:

1 - Leaving blank address or ‘0’ doesn’t work - or even 127.0.0.1. I have to actually put my PC’s ip address in. My machine does have 2 ip addresses though as I have a direct connection to my NAS. It may be trying to set this address as local. Not very robust IP setting if that’s the problem.

2 - Crashing - I’m using Lemur to send in commands but it causes random crashes after a short amount of time. I don’t know if this is just due to the number of RX messages coming in or if it’s because i’m using a component and should be using a normal actor - I don’t think this should really affect things though.

3 - How does the client setup work? Surely you still need to be able to bind events to messages coming in? Is it just a buffer that fills up that you empty as you go?

Thanks!

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I don’t realy understand becouse i’m a total noob, i gues i need someone to make a full stel by step guide dannington cough cough

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First you need to take a course on Chuck I think https://www.kadenze.com/courses/introduction-to-real-time-audio-programming-in-chuck/info it is free if you don’t need certificate, it is fun if you have a time.
Than you need to find some patience and take a look at this https://www.youtube.com/watch?v=EM_HYqQdToE here is explaning about dispatcher which are using here.
Than I think rest you figure out youself.

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Since i know openframeworks and processing i don’t think i need the course.
i watched the explanation of the node system. watch it at 1.5 speed tho or die of waiting. I have a better grasp now and i’l try again later this weekend.
i’d like to know how to just do it in code tho.
i dont understand the .ck file extention i thought unreal ws all c++ and i dont understand how to propperly ad it and use the output in other files or nodes.

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The osc receiver is working with me, but it stops receiving after 15-20 seconds… as if it stopped listening. Is this happening only with me or no?
regards.

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Which version of Unreal are you using?

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Crash after X seconds workarounds:
https://forums.unrealengine.com/deve…-osc-blueprint

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Any way you could someone possibly just save a working Blueprint ? It costs you 0.002 seconds. The screenshots are quite useless if you can’t c what happens before the screenshots starts. I’m sure it is not at all hard to understand but just impossible to know without proper overview or kit to bash.

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I started the YouTube video again and 99% is just not useful here. Its very bloated for this use case.
Al I want to do is receive the data from Ableton in OSC. And have the data set parameters. Each thing that needs to listen to something else can listen on a different port.

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Hi folks,

Could someone tell me?:

Does the 4th example in the OP (Parsing out 2 different namespaces for incoming messages: https://ccrma.stanford.edu/~rob/ue4/…namespaces.png) allow you to have two different incoming OSC “streams” execute in the same BP?

Basically what i want to do is send multiple CV sources from Eurorack (see vids below) into a BP and effect two different parameters at the same time (or at least so that it seems at the same time, i guess in essence a BP can only execute serially?!)

Thanks!

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Thanks for your examples! I am interested in the sending OSC bundle part: How do I get the character location on movement? Your solution unfortunately doesn’t seem to work for me. I cant even print the x,y,z variables on screen. Any idea on how to get the location?