midiservice.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
#pragma once
 
// Std includes
#include <set>
 
// Nap includes
#include <nap/service.h>
#include <concurrentqueue.h>
 
// Midi includes
#include "midievent.h"
 
namespace nap
{
    // Forward declarations
    class MidiInputPort;
    class MidiInputComponentInstance;
 
    class NAPAPI MidiService : public nap::Service
    {
    RTTI_ENABLE(nap::Service)
 
        friend class MidiInputPort;
        friend class MidiInputComponentInstance;
 
    public:
        MidiService(ServiceConfiguration* configuration);
 
        // Initialization
        bool init(nap::utility::ErrorState& errorState) override;
 
        void enqueueEvent(std::unique_ptr<MidiEvent> event) { mEventQueue.enqueue(std::move(event)); }
 
        void update(double deltaTime) override;
 
    private:
        // Used by input component to register itself to receive incoming midi events
        void registerInputComponent(MidiInputComponentInstance& component) { mInputComponents.emplace(&component); }
 
        // Used by input component to unregister itself.
        void unregisterInputComponent(MidiInputComponentInstance& component) { mInputComponents.erase(&component); }
 
        std::set<MidiInputComponentInstance*> mInputComponents; // all registered midi input components
 
        moodycamel::ConcurrentQueue<std::unique_ptr<MidiEvent>> mEventQueue;
    };
 
}