12c08ceee3
This adds CoreAudio as audio backend on macOS. CoreAudio is the standard audio API on macOS. Ref T86590
101 lines
2.7 KiB
C++
101 lines
2.7 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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#pragma once
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#ifdef COREAUDIO_PLUGIN
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#define AUD_BUILD_PLUGIN
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#endif
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/**
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* @file CoreAudioDevice.h
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* @ingroup plugin
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* The CoreAudioDevice class.
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*/
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#include "CoreAudioSynchronizer.h"
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#include "devices/SoftwareDevice.h"
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#include <memory>
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#include <AudioUnit/AudioUnit.h>
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AUD_NAMESPACE_BEGIN
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/**
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* This device plays back through CoreAudio, the Apple audio API.
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*/
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class AUD_PLUGIN_API CoreAudioDevice : public SoftwareDevice
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{
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private:
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/**
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* Whether there is currently playback.
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*/
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bool m_playback;
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/**
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* The CoreAudio AudioUnit.
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*/
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AudioUnit m_audio_unit;
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/**
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* The Synchronizer.
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*/
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std::unique_ptr<CoreAudioSynchronizer> m_synchronizer;
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/**
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* Mixes the next bytes into the buffer.
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* \param data The CoreAudio device.
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* \param flags Unused flags.
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* \param time_stamp Unused time stamp.
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* \param bus_number Unused bus number.
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* \param number_frames Unused number of frames.
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* \param buffer_list The list of buffers to be filled.
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*/
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AUD_LOCAL static OSStatus CoreAudio_mix(void* data, AudioUnitRenderActionFlags* flags, const AudioTimeStamp* time_stamp, UInt32 bus_number, UInt32 number_frames, AudioBufferList* buffer_list);
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// delete copy constructor and operator=
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CoreAudioDevice(const CoreAudioDevice&) = delete;
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CoreAudioDevice& operator=(const CoreAudioDevice&) = delete;
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protected:
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virtual void playing(bool playing);
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public:
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/**
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* Opens the CoreAudio audio device for playback.
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* \param specs The wanted audio specification.
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* \param buffersize The size of the internal buffer.
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* \note The specification really used for opening the device may differ.
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* \exception Exception Thrown if the audio device cannot be opened.
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*/
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CoreAudioDevice(DeviceSpecs specs, int buffersize = AUD_DEFAULT_BUFFER_SIZE);
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/**
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* Closes the CoreAudio audio device.
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*/
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virtual ~CoreAudioDevice();
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virtual ISynchronizer* getSynchronizer();
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/**
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* Registers this plugin.
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*/
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static void registerPlugin();
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};
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AUD_NAMESPACE_END
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