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// Copyright 2009-2021 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#ifndef MUMBLE_MUMBLE_COREAUDIO_H_
# define MUMBLE_MUMBLE_COREAUDIO_H_
# include "AudioInput.h"
# include "AudioOutput.h"
# include <AudioToolbox/AudioToolbox.h>
enum AUDirection { OUTPUT = 0, INPUT = 1 };
class CoreAudioSystem : public QObject {
private:
Q_OBJECT
Q_DISABLE_COPY(CoreAudioSystem)
public:
static const QHash< QString, QString > getDevices(bool input, bool echo);
static const QList< audioDevice > getDeviceChoices(bool input);
};
class CoreAudioInput : public AudioInput {
private:
Q_OBJECT
Q_DISABLE_COPY(CoreAudioInput)
/// Open HAL AU as input and pass back the output stream description.
bool openAUHAL(AudioStreamBasicDescription &streamDescription);
/// Open VoiceProcessingIO AU as input, utilizing macOS's builtin echo cancellation,
/// and pass back the output stream description.
bool openAUVoip(AudioStreamBasicDescription &streamDescription);
/// Initialize input AU with preferred parameters of Mumble
bool initializeInputAU(AudioUnit au, AudioStreamBasicDescription &streamDescription, int &actualBufferLength);
protected:
/// Hardware Abstraction Layer's AudioUnit, directly interacts with the hardware
AudioUnit auHAL{};
/// VoiceProcessingIO AU, provides audio input and echo cancellation
AudioUnit auVoip{};
AudioDeviceID inputDevId{};
AudioDeviceID echoOutputDevId{};
AudioBufferList buflist{};
static void propertyChange(void *udata, AudioUnit au, AudioUnitPropertyID prop, AudioUnitScope scope,
AudioUnitElement element);
static OSStatus inputCallback(void *udata, AudioUnitRenderActionFlags *flags, const AudioTimeStamp *ts,
UInt32 busnum, UInt32 npackets, AudioBufferList *buflist);
public:
CoreAudioInput();
~CoreAudioInput() Q_DECL_OVERRIDE;
void run() Q_DECL_OVERRIDE;
void stop();
};
class CoreAudioOutput : public AudioOutput {
private:
Q_OBJECT
Q_DISABLE_COPY(CoreAudioOutput)
protected:
/// Hardware Abstraction Layer's AudioOutputUnit, directly interacts with the hardware
AudioUnit auHAL{};
static void propertyChange(void *udata, AudioUnit au, AudioUnitPropertyID prop, AudioUnitScope scope,
AudioUnitElement element);
static OSStatus outputCallback(void *udata, AudioUnitRenderActionFlags *flags, const AudioTimeStamp *ts,
UInt32 busnum, UInt32 npackets, AudioBufferList *buflist);
public:
CoreAudioOutput();
~CoreAudioOutput() Q_DECL_OVERRIDE;
void run() Q_DECL_OVERRIDE;
void stop();
};
class CoreAudioInputRegistrar : public AudioInputRegistrar {
public:
CoreAudioInputRegistrar();
virtual AudioInput *create();
virtual const QList< audioDevice > getDeviceChoices();
virtual void setDeviceChoice(const QVariant &, Settings &);
virtual bool canEcho(EchoCancelOptionID echoCancelID, const QString &outputSystem) const;
virtual bool isMicrophoneAccessDeniedByOS();
};
class CoreAudioOutputRegistrar : public AudioOutputRegistrar {
public:
CoreAudioOutputRegistrar() : AudioOutputRegistrar(QLatin1String("CoreAudio"), 10) {}
virtual AudioOutput *create();
virtual const QList< audioDevice > getDeviceChoices();
virtual void setDeviceChoice(const QVariant &, Settings &);
bool canMuteOthers() const;
};
#else
class CoreAudioSystem;
class CoreAudioInput;
class CoreAudioOutput;
#endif
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