CoreAudioDevice.h

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/*******************************************************************************
 * Copyright 2009-2021 Jörg Müller
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
 
#pragma once
 
#ifdef COREAUDIO_PLUGIN
#define AUD_BUILD_PLUGIN
#endif

 
#include <memory>
 
#include <AudioUnit/AudioUnit.h>
 
#include "CoreAudioSynchronizer.h"
 
#include "devices/OpenCloseDevice.h"
 
AUD_NAMESPACE_BEGIN

class AUD_PLUGIN_API CoreAudioDevice : public OpenCloseDevice
{
private:
    bool m_playback;

    AudioUnit m_audio_unit;

    std::unique_ptr<CoreAudioSynchronizer> m_synchronizer;

    AUD_LOCAL static OSStatus CoreAudio_mix(void* data, AudioUnitRenderActionFlags* flags, const AudioTimeStamp* time_stamp, UInt32 bus_number, UInt32 number_frames, AudioBufferList* buffer_list);
 
    AUD_LOCAL void start();
    AUD_LOCAL void stop();
    AUD_LOCAL void open();
    AUD_LOCAL void close();
 
    // delete copy constructor and operator=
    CoreAudioDevice(const CoreAudioDevice&) = delete;
    CoreAudioDevice& operator=(const CoreAudioDevice&) = delete;
 
public:
    CoreAudioDevice(DeviceSpecs specs, int buffersize = AUD_DEFAULT_BUFFER_SIZE);

    virtual ~CoreAudioDevice();
 
    virtual ISynchronizer* getSynchronizer();

    static void registerPlugin();
};
 
AUD_NAMESPACE_END