241 lines
6.6 KiB
C++
241 lines
6.6 KiB
C++
/*******************************************************************************
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* Copyright 2009-2021 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#include "CoreAudioDevice.h"
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#include "devices/DeviceManager.h"
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#include "devices/IDeviceFactory.h"
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#include "Exception.h"
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#include "IReader.h"
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AUD_NAMESPACE_BEGIN
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OSStatus CoreAudioDevice::CoreAudio_mix(void* data, AudioUnitRenderActionFlags* flags, const AudioTimeStamp* time_stamp, UInt32 bus_number, UInt32 number_frames, AudioBufferList* buffer_list)
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{
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CoreAudioDevice* device = (CoreAudioDevice*)data;
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for(int i = 0; i < buffer_list->mNumberBuffers; i++)
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{
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auto& buffer = buffer_list->mBuffers[i];
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device->mix((data_t*)buffer.mData, buffer.mDataByteSize / AUD_DEVICE_SAMPLE_SIZE(device->m_specs));
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}
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return noErr;
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}
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void CoreAudioDevice::start()
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{
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AudioOutputUnitStart(m_audio_unit);
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}
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void CoreAudioDevice::stop()
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{
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AudioOutputUnitStop(m_audio_unit);
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}
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void CoreAudioDevice::open()
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{
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AudioComponentDescription component_description = {};
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component_description.componentType = kAudioUnitType_Output;
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component_description.componentSubType = kAudioUnitSubType_DefaultOutput;
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component_description.componentManufacturer = kAudioUnitManufacturer_Apple;
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AudioComponent component = AudioComponentFindNext(nullptr, &component_description);
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if(!component)
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AUD_THROW(DeviceException, "The audio device couldn't be opened with CoreAudio.");
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OSStatus status = AudioComponentInstanceNew(component, &m_audio_unit);
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if(status != noErr)
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AUD_THROW(DeviceException, "The audio device couldn't be opened with CoreAudio.");
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AudioStreamBasicDescription stream_basic_description = {};
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switch(m_specs.format)
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{
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case FORMAT_U8:
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stream_basic_description.mFormatFlags = 0;
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stream_basic_description.mBitsPerChannel = 8;
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break;
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case FORMAT_S16:
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stream_basic_description.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
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stream_basic_description.mBitsPerChannel = 16;
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break;
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case FORMAT_S24:
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stream_basic_description.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
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stream_basic_description.mBitsPerChannel = 24;
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break;
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case FORMAT_S32:
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stream_basic_description.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
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stream_basic_description.mBitsPerChannel = 32;
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break;
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case FORMAT_FLOAT32:
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stream_basic_description.mFormatFlags = kLinearPCMFormatFlagIsFloat;
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stream_basic_description.mBitsPerChannel = 32;
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break;
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case FORMAT_FLOAT64:
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stream_basic_description.mFormatFlags = kLinearPCMFormatFlagIsFloat;
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stream_basic_description.mBitsPerChannel = 64;
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break;
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default:
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m_specs.format = FORMAT_FLOAT32;
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stream_basic_description.mFormatFlags = kLinearPCMFormatFlagIsFloat;
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stream_basic_description.mBitsPerChannel = 32;
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break;
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}
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stream_basic_description.mSampleRate = m_specs.rate;
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stream_basic_description.mFormatID = kAudioFormatLinearPCM;
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stream_basic_description.mFormatFlags |= kAudioFormatFlagsNativeEndian | kLinearPCMFormatFlagIsPacked;
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stream_basic_description.mBytesPerPacket = stream_basic_description.mBytesPerFrame = AUD_DEVICE_SAMPLE_SIZE(m_specs);
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stream_basic_description.mFramesPerPacket = 1;
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stream_basic_description.mChannelsPerFrame = m_specs.channels;
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status = AudioUnitSetProperty(m_audio_unit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &stream_basic_description, sizeof(stream_basic_description));
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if(status != noErr)
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{
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AudioComponentInstanceDispose(m_audio_unit);
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AUD_THROW(DeviceException, "The audio device couldn't be opened with CoreAudio.");
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}
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AURenderCallbackStruct render_callback_struct;
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render_callback_struct.inputProc = CoreAudioDevice::CoreAudio_mix;
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render_callback_struct.inputProcRefCon = this;
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status = AudioUnitSetProperty(m_audio_unit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, 0, &render_callback_struct, sizeof(render_callback_struct));
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if(status != noErr)
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{
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AudioComponentInstanceDispose(m_audio_unit);
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AUD_THROW(DeviceException, "The audio device couldn't be opened with CoreAudio.");
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}
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status = AudioUnitInitialize(m_audio_unit);
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if(status != noErr)
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{
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AudioComponentInstanceDispose(m_audio_unit);
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AUD_THROW(DeviceException, "The audio device couldn't be opened with CoreAudio.");
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}
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try
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{
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m_synchronizer = std::unique_ptr<CoreAudioSynchronizer>(new CoreAudioSynchronizer(m_audio_unit));
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}
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catch(Exception&)
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{
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AudioComponentInstanceDispose(m_audio_unit);
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throw;
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}
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}
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void CoreAudioDevice::close()
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{
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AudioOutputUnitStop(m_audio_unit);
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AudioUnitUninitialize(m_audio_unit);
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AudioComponentInstanceDispose(m_audio_unit);
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}
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CoreAudioDevice::CoreAudioDevice(DeviceSpecs specs, int buffersize) :
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m_playback(false),
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m_audio_unit(nullptr)
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{
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if(specs.channels == CHANNELS_INVALID)
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specs.channels = CHANNELS_STEREO;
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if(specs.format == FORMAT_INVALID)
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specs.format = FORMAT_FLOAT32;
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if(specs.rate == RATE_INVALID)
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specs.rate = RATE_48000;
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m_specs = specs;
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open();
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close();
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create();
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}
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CoreAudioDevice::~CoreAudioDevice()
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{
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destroy();
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closeNow();
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}
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ISynchronizer* CoreAudioDevice::getSynchronizer()
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{
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return m_synchronizer.get();
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}
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class CoreAudioDeviceFactory : public IDeviceFactory
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{
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private:
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DeviceSpecs m_specs;
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int m_buffersize;
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public:
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CoreAudioDeviceFactory() :
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m_buffersize(AUD_DEFAULT_BUFFER_SIZE)
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{
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m_specs.format = FORMAT_FLOAT32;
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m_specs.channels = CHANNELS_STEREO;
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m_specs.rate = RATE_48000;
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}
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virtual std::shared_ptr<IDevice> openDevice()
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{
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return std::shared_ptr<IDevice>(new CoreAudioDevice(m_specs, m_buffersize));
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}
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virtual int getPriority()
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{
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return 1 << 15;
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}
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virtual void setSpecs(DeviceSpecs specs)
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{
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m_specs = specs;
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}
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virtual void setBufferSize(int buffersize)
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{
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m_buffersize = buffersize;
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}
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virtual void setName(const std::string &name)
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{
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}
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};
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void CoreAudioDevice::registerPlugin()
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{
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DeviceManager::registerDevice("CoreAudio", std::shared_ptr<IDeviceFactory>(new CoreAudioDeviceFactory));
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}
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#ifdef COREAUDIO_PLUGIN
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extern "C" AUD_PLUGIN_API void registerPlugin()
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{
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CoreAudioDevice::registerPlugin();
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}
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extern "C" AUD_PLUGIN_API const char* getName()
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{
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return "CoreAudio";
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}
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#endif
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AUD_NAMESPACE_END
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