audioservice.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
 
// Audio includes
#include <audio/core/audionodemanager.h>
#include <audio/utility/safeptr.h>
 
// Nap includes
#include <nap/service.h>
#include <utility/threading.h>
 
namespace nap
{
    namespace audio
    {
        // Forward declarations
        class AudioService;
 
        class NAPAPI AudioService final : public Service
        {
        RTTI_ENABLE(nap::Service)
 
        public:
            AudioService(ServiceConfiguration* configuration);
 
            ~AudioService() = default;
 
            bool init(nap::utility::ErrorState& errorState) override;
 
             void shutdown() override;
 
            NodeManager& getNodeManager();
 
            void onAudioCallback(float** inputBuffer, float** outputBuffer, unsigned long framesPerBuffer);
 
            void enqueueTask(TaskQueue::Task task) { mNodeManager.enqueueTask(task); }
 
        private:
            /*
             * Checks wether certain atomic types that are used within the library are lockfree and gives a warning if not.
             */
            void checkLockfreeTypes();
 
        private:
            NodeManager mNodeManager; // The node manager that performs the audio processing.
            bool mMpg123Initialized    = false; // If mpg123 is initialized
 
            // DeletionQueue with nodes that are no longer used and that can be cleared and destructed safely on the next audio callback.
            // Clearing is performed on the audio callback to make sure the node can not be destructed while it is being processed.
            DeletionQueue mDeletionQueue;
        };
    }
}