![]() This is one of OSC's main advantages, and if you are doing anything more complex than the examples above, you should start by getting your set of messages (your namespace) right. Unlike MIDI, OSC requires you to define your own messages. Osc_bundlereceive.pd Designing your namespace Receiving a bundle is no different than receiving a single message. Inside the brackets, you can pack any number of messages. This example sends one bundle containing 3 notes.īundles are enclosed in square brackets. Sometimes you might want to send several messages at the same time. PureData only knows floats, strings and symbols. Note that PureData and OSC use different types. Osculator windows Patch#This example uses the object to send a boolean (true or false), an integer (a MIDI note number) and a float (amplitude).ĭepending on the value of the first argument (the boolean argument), the receiving patch puts out a sine or a sawtooth wave. It is also possible (and good practice) to set the types of the arguments. The previous examples all send typed-guessed messages. On the receiving patch, the arguments are unpacked using the object, and used to control an oscillator's pitch and amplitude. This example creates a message with 2 arguments for note (MIDI note number) and amplitude. OSC argumentsĪn OSC message can have any number of arguments. It is up to you to define the messages you want to send and receive. ![]() It is important to understand that OSC does not come with predefined messages, like MIDI does. On the receiving end, the messages are routed using the object and used to control an oscillator. Messages are told apart by their address components (/test/voice and /test/mute). This example sends 2 different OSC messages. The address lets you route the data on the receiving end. The first part of an OSC message is an URL-style address (in the previous example, “/test”). The TCP protocol is much more reliable than UDP, so if you are connecting to a computer over the internet, or data packets are lost or shuffled underway, use TCP. In all these examples, you can replace the and objects by their corresponding TCP counterparts and. If you are communicating with another application, you will have to find out which port it is using. You can choose another port if you want to, just make sure the port you choose is not already in use. Which port is used for what is a matter of configuration, but PureData uses port 9001 by default. Each service (such as a webserver, a database etc.) may listen or send data through it's assigned port. PortsĮvery computer has a large number of ports. If you want to open a remote connection to a computer over the internet, consider using TCP instead of UDP (see below) and proceed as with a local connection. If both computers are on a local network, you can use their network names, or else, to find out a computers IP address, open a terminal and type "ifconfig" (Mac/Linux) or "ipconfig /all" (Windows). If both sending and receiving PureData patches are on the same computer, you can use the special loopback interface: the IP address is 127.0.0.1 and the hostname is "localhost". The OSC message has to be unpacked using the object. The object tells the patch to listen to a given port number. In order to send an OSC message over the opened connection, you have to pack it first, using the object. The UDP connection you just opened can only really send bytes. As with, you have to provide an IP address or hostname, and a port number. Sending a connect message to an object opens an UDP connection to another computer. ![]() PureData is in the process of migrating to mrpeach OSC objects, but in the current release you still have to import them explicitly. At the time of writing, the mrpeach implementation is best supported. There are several OSC implementations in PureData. Most modern programming languages are OSC enabled, notably Processing, Java, Python, C++, Max/MSP and SuperCollider. ![]() Using OSC you can exchange data with a number of devices, such as Lemur, iPhone (through OSCulator), Monome, or applications such as Ardour, Modul8, Reaktor and many more. OSC is network enabled, using common network cables and hardware. OSC enables communication at a higher level than the PureData objects and is both more flexible and more precise than MIDI. OSC is a standard that lets you format and structure messages. The OSC objects are for sharing musical data over a network. ![]()
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