/* ============================================================================== This file is part of the JUCE library. Copyright (c) 2020 - Raw Material Software Limited JUCE is an open source library subject to commercial or open-source licensing. By using JUCE, you agree to the terms of both the JUCE 6 End-User License Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020). End User License Agreement: www.juce.com/juce-6-licence Privacy Policy: www.juce.com/juce-privacy-policy Or: You may also use this code under the terms of the GPL v3 (see www.gnu.org/licenses). JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE DISCLAIMED. ============================================================================== */ namespace juce { //============================================================================== /** A class for receiving OSC data. An OSCReceiver object allows you to receive OSC bundles and messages. It can connect to a network port, receive incoming OSC packets from the network via UDP, parse them, and forward the included OSCMessage and OSCBundle objects to its listeners. @tags{OSC} */ class JUCE_API OSCReceiver { public: //============================================================================== /** Creates an OSCReceiver. */ OSCReceiver(); /** Creates an OSCReceiver with a specific name for its thread. */ OSCReceiver (const String& threadName); /** Destructor. */ ~OSCReceiver(); //============================================================================== /** Connects to the specified UDP port using a datagram socket, and starts listening to OSC packets arriving on this port. @returns true if the connection was successful; false otherwise. */ bool connect (int portNumber); /** Connects to a UDP datagram socket that is already set up, and starts listening to OSC packets arriving on this port. Make sure that the object you give it doesn't get deleted while this object is still using it! @returns true if the connection was successful; false otherwise. */ bool connectToSocket (DatagramSocket& socketToUse); //============================================================================== /** Disconnects from the currently used UDP port. @returns true if the disconnection was successful; false otherwise. */ bool disconnect(); //============================================================================== /** Use this struct as the template parameter for Listener and ListenerWithOSCAddress to receive incoming OSC data on the message thread. This should be used by OSC callbacks that are not realtime-critical, but have significant work to do, for example updating Components in your app's user interface. This is the default type of OSC listener. */ struct JUCE_API MessageLoopCallback {}; /** Use this struct as the template parameter for Listener and ListenerWithOSCAddress to receive incoming OSC data immediately after it arrives, called directly on the network thread that listens to incoming OSC traffic. This type can be used by OSC callbacks that don't do much, but are realtime-critical, for example, setting real-time audio parameters. */ struct JUCE_API RealtimeCallback {}; //============================================================================== /** A class for receiving OSC data from an OSCReceiver. The template argument CallbackType determines how the callback will be called and has to be either MessageLoopCallback or RealtimeCallback. If not specified, MessageLoopCallback will be used by default. @see OSCReceiver::addListener, OSCReceiver::ListenerWithOSCAddress, OSCReceiver::MessageLoopCallback, OSCReceiver::RealtimeCallback */ template class JUCE_API Listener { public: /** Destructor. */ virtual ~Listener() = default; /** Called when the OSCReceiver receives a new OSC message. You must implement this function. */ virtual void oscMessageReceived (const OSCMessage& message) = 0; /** Called when the OSCReceiver receives a new OSC bundle. If you are not interested in OSC bundles, just ignore this method. The default implementation provided here will simply do nothing. */ virtual void oscBundleReceived (const OSCBundle& /*bundle*/) {} }; //============================================================================== /** A class for receiving only those OSC messages from an OSCReceiver that match a given OSC address. Use this class if your app receives OSC messages with different address patterns (for example "/juce/fader1", /juce/knob2" etc.) and you want to route those to different objects. This class contains pre-build functionality for that OSC address routing, including wildcard pattern matching (e.g. "/juce/fader[0-9]"). This class implements the concept of an "OSC Method" from the OpenSoundControl 1.0 specification. The template argument CallbackType determines how the callback will be called and has to be either MessageLoopCallback or RealtimeCallback. If not specified, MessageLoopCallback will be used by default. Note: This type of listener will ignore OSC bundles. @see OSCReceiver::addListener, OSCReceiver::Listener, OSCReceiver::MessageLoopCallback, OSCReceiver::RealtimeCallback */ template class JUCE_API ListenerWithOSCAddress { public: /** Destructor. */ virtual ~ListenerWithOSCAddress() = default; /** Called when the OSCReceiver receives an OSC message with an OSC address pattern that matches the OSC address with which this listener was added. */ virtual void oscMessageReceived (const OSCMessage& message) = 0; }; //============================================================================== /** Adds a listener that listens to OSC messages and bundles. This listener will be called on the application's message loop. */ void addListener (Listener* listenerToAdd); /** Adds a listener that listens to OSC messages and bundles. This listener will be called in real-time directly on the network thread that receives OSC data. */ void addListener (Listener* listenerToAdd); /** Adds a filtered listener that listens to OSC messages matching the address used to register the listener here. The listener will be called on the application's message loop. */ void addListener (ListenerWithOSCAddress* listenerToAdd, OSCAddress addressToMatch); /** Adds a filtered listener that listens to OSC messages matching the address used to register the listener here. The listener will be called on the application's message loop. */ void addListener (ListenerWithOSCAddress* listenerToAdd, OSCAddress addressToMatch); /** Removes a previously-registered listener. */ void removeListener (Listener* listenerToRemove); /** Removes a previously-registered listener. */ void removeListener (Listener* listenerToRemove); /** Removes a previously-registered listener. */ void removeListener (ListenerWithOSCAddress* listenerToRemove); /** Removes a previously-registered listener. */ void removeListener (ListenerWithOSCAddress* listenerToRemove); //============================================================================== /** An error handler function for OSC format errors that can be called by the OSCReceiver. The arguments passed are the pointer to and the data of the buffer that the OSCReceiver has failed to parse. */ using FormatErrorHandler = std::function; /** Installs a custom error handler which is called in case the receiver encounters a stream it cannot parse as an OSC bundle or OSC message. By default (i.e. if you never use this method), in case of a parsing error nothing happens and the invalid packet is simply discarded. */ void registerFormatErrorHandler (FormatErrorHandler handler); private: //============================================================================== struct Pimpl; std::unique_ptr pimpl; friend struct OSCReceiverCallbackMessage; JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (OSCReceiver) }; } // namespace juce