void prepareAudioUnit()
{
// creating an AudioComponentDescription of the RemoteIO AudioUnit
AudioComponentDescription cd = new AudioComponentDescription()
{
componentType = AudioComponentDescription.AudioComponentType.kAudioUnitType_Output,
componentSubType = AudioComponentDescription.AudioComponentSubType.kAudioUnitSubType_RemoteIO,
componentManufacturer = AudioComponentDescription.AudioComponentManufacturerType.kAudioUnitManufacturer_Apple,
componentFlags = 0,
componentFlagsMask = 0
};
// Getting AudioComponent using the audio component description
_audioComponent = AudioComponent.FindComponent(cd);
// creating an audio unit instance
_audioUnit = AudioUnit.CreateInstance(_audioComponent);
// setting audio format
_audioUnit.SetAudioFormat(_dstFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
0 // Remote Output
);
// setting callback method
_audioUnit.RenderCallback += new EventHandler <AudioUnitEventArgs>(_audioUnit_RenderCallback);
_audioUnit.Initialize();
}
void prepareAudioUnit()
{
// Creating AudioComponentDescription instance of RemoteIO Audio Unit
AudioComponentDescription cd = new AudioComponentDescription()
{
componentType = AudioComponentDescription.AudioComponentType.kAudioUnitType_Output,
componentSubType = AudioComponentDescription.AudioComponentSubType.kAudioUnitSubType_RemoteIO,
componentManufacturer = AudioComponentDescription.AudioComponentManufacturerType.kAudioUnitManufacturer_Apple,
componentFlags = 0,
componentFlagsMask = 0
};
// Getting AudioComponent from the description
_component = AudioComponent.FindComponent(cd);
// Getting Audiounit
_audioUnit = AudioUnit.CreateInstance(_component);
// setting AudioStreamBasicDescription
int AudioUnitSampleTypeSize;
if (MonoTouch.ObjCRuntime.Runtime.Arch == MonoTouch.ObjCRuntime.Arch.SIMULATOR)
{
AudioUnitSampleTypeSize = sizeof(float);
}
else
{
AudioUnitSampleTypeSize = sizeof(int);
}
AudioStreamBasicDescription audioFormat = new AudioStreamBasicDescription()
{
SampleRate = _sampleRate,
Format = AudioFormatType.LinearPCM,
//kAudioFormatFlagsAudioUnitCanonical = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked | kAudioFormatFlagIsNonInterleaved | (kAudioUnitSampleFractionBits << kLinearPCMFormatFlagsSampleFractionShift),
FormatFlags = (AudioFormatFlags)((int)AudioFormatFlags.IsSignedInteger | (int)AudioFormatFlags.IsPacked | (int)AudioFormatFlags.IsNonInterleaved | (int)(kAudioUnitSampleFractionBits << (int)AudioFormatFlags.LinearPCMSampleFractionShift)),
ChannelsPerFrame = 2,
BytesPerPacket = AudioUnitSampleTypeSize,
BytesPerFrame = AudioUnitSampleTypeSize,
FramesPerPacket = 1,
BitsPerChannel = 8 * AudioUnitSampleTypeSize,
Reserved = 0
};
_audioUnit.SetAudioFormat(audioFormat, AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input, 0);
// setting callback
/*
* if (MonoTouch.ObjCRuntime.Runtime.Arch == MonoTouch.ObjCRuntime.Arch.SIMULATOR)
* _audioUnit.RenderCallback += new EventHandler<AudioUnitEventArgs>(simulator_callback);
* else
* _audioUnit.RenderCallback += new EventHandler<AudioUnitEventArgs>(device_callback);
* */
_audioUnit.RenderCallback += new EventHandler <AudioUnitEventArgs>(device_callback);
}
void prepareAudioUnit()
{
// AudioSession
AudioSession.Initialize();
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.005f;
// creating an AudioComponentDescription of the RemoteIO AudioUnit
AudioComponentDescription cd = new AudioComponentDescription()
{
componentType = AudioComponentDescription.AudioComponentType.kAudioUnitType_Output,
componentSubType = AudioComponentDescription.AudioComponentSubType.kAudioUnitSubType_RemoteIO,
componentManufacturer = AudioComponentDescription.AudioComponentManufacturerType.kAudioUnitManufacturer_Apple,
componentFlags = 0,
componentFlagsMask = 0
};
// Getting AudioComponent using the audio component description
_audioComponent = AudioComponent.FindComponent(cd);
// creating an audio unit instance
_audioUnit = AudioUnit.CreateInstance(_audioComponent);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
1 // Remote Input
);
// setting audio format
_audioUnit.SetAudioFormat(_dstFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
0 // Remote Output
);
_audioUnit.SetAudioFormat(AudioUnitUtils.AUCanonicalASBD(_sampleRate, 2),
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Output,
1 // Remote input
);
// setting callback method
_audioUnit.RenderCallback += new EventHandler <AudioUnitEventArgs>(_audioUnit_RenderCallback);
_audioUnit.Initialize();
_audioUnit.Start();
}
void prepareAudioUnit()
{
// Creating AudioComponentDescription instance of RemoteIO Audio Unit
var cd = new AudioComponentDescription()
{
componentType = AudioComponentDescription.AudioComponentType.kAudioUnitType_Output,
componentSubType = AudioComponentDescription.AudioComponentSubType.kAudioUnitSubType_RemoteIO,
componentManufacturer = AudioComponentDescription.AudioComponentManufacturerType.kAudioUnitManufacturer_Apple,
componentFlags = 0,
componentFlagsMask = 0
};
// Getting AudioComponent from the description
_component = AudioComponent.FindComponent(cd);
// Getting Audiounit
_audioUnit = AudioUnit.CreateInstance(_component);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
1 // Remote Input
);
// setting AudioStreamBasicDescription
var audioFormat = AudioUnitUtils.AUCanonicalASBD(44100.0, 2);
_audioUnit.SetAudioFormat(audioFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
0 // Remote output
);
_audioUnit.SetAudioFormat(audioFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Output,
1 // Remote input
);
// setting callback
_audioUnit.RenderCallback += new EventHandler <AudioUnitEventArgs>(_audioUnit_RenderCallback);
// initialize
_audioUnit.Initialize();
}
void prepareAudioUnit()
{
// AudioSession
AudioSession.Initialize();
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.01f;
// Creating AudioComponentDescription instance of RemoteIO Audio Unit
var cd = new AudioComponentDescription()
{
componentType = AudioComponentDescription.AudioComponentType.kAudioUnitType_Output,
componentSubType = AudioComponentDescription.AudioComponentSubType.kAudioUnitSubType_RemoteIO,
componentManufacturer = AudioComponentDescription.AudioComponentManufacturerType.kAudioUnitManufacturer_Apple,
componentFlags = 0,
componentFlagsMask = 0
};
// Getting AudioComponent from the description
_component = AudioComponent.FindComponent(cd);
// Getting Audiounit
_audioUnit = AudioUnit.CreateInstance(_component);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
1 // Remote Input
);
// setting AudioStreamBasicDescription
int AudioUnitSampleTypeSize = (MonoTouch.ObjCRuntime.Runtime.Arch == MonoTouch.ObjCRuntime.Arch.SIMULATOR) ? sizeof(float) : sizeof(uint);
AudioStreamBasicDescription audioFormat = new AudioStreamBasicDescription()
{
SampleRate = _sampleRate,
Format = AudioFormatType.LinearPCM,
//kAudioFormatFlagsAudioUnitCanonical = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked | kAudioFormatFlagIsNonInterleaved | (kAudioUnitSampleFractionBits << kLinearPCMFormatFlagsSampleFractionShift),
FormatFlags = (AudioFormatFlags)((int)AudioFormatFlags.IsSignedInteger | (int)AudioFormatFlags.IsPacked | (int)AudioFormatFlags.IsNonInterleaved | (int)(kAudioUnitSampleFractionBits << (int)AudioFormatFlags.LinearPCMSampleFractionShift)),
ChannelsPerFrame = 2,
BytesPerPacket = AudioUnitSampleTypeSize,
BytesPerFrame = AudioUnitSampleTypeSize,
FramesPerPacket = 1,
BitsPerChannel = 8 * AudioUnitSampleTypeSize,
Reserved = 0
};
_audioUnit.SetAudioFormat(audioFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
0 // Remote output
);
_audioUnit.SetAudioFormat(audioFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Output,
1 // Remote input
);
// setting callback
/*
* if (MonoTouch.ObjCRuntime.Runtime.Arch == MonoTouch.ObjCRuntime.Arch.SIMULATOR)
* _audioUnit.RenderCallback += new EventHandler<AudioUnitEventArgs>(simulator_callback);
* else
* _audioUnit.RenderCallback += new EventHandler<AudioUnitEventArgs>(device_callback);
*/
_audioUnit.RenderCallback += new EventHandler <AudioUnitEventArgs>(_callback);
// initialize
_audioUnit.Initialize();
}