void prepareAudioUnit()
{
// AudioSession
AudioSession.Initialize();
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.01f;
// Getting a RemoteUI AudioUni AudioComponent
_component = AudioComponent.FindComponent(AudioTypeOutput.Remote);
// Getting Audiounit
_audioUnit = AudioUnit.CreateInstance(_component);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnitScopeType.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,
AudioUnitScopeType.Input,
0 // Remote output
);
_audioUnit.SetAudioFormat(audioFormat,
AudioUnitScopeType.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);
// initialize
_audioUnit.Initialize();
}
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();
}
private void startTalking(UdpClient audioCaller)
{
//Stop old recording session
//Generate new WaveFormat
// recorder.WaveFormat = new WaveFormat(16000, 16, 1);
// recorder.BufferMilliseconds = 50;
// recorder.DataAvailable += SendAudio; //Add event to SendAudio
// recorder = new InputAudioQueue (playerFormat);
//
//
// for (int i = 0; i < BUFFERCOUNT; i++) {
// IntPtr aBUff;
// //recorder.AllocateBuffer (AUDIOBUFFERSIZE, out aBUff);
// byteSize = AUDIOBUFFERSIZE * playerFormat.BytesPerPacket;
// recorder.AllocateBufferWithPacketDescriptors (byteSize, AUDIOBUFFERSIZE, out aBUff);
// recorder.EnqueueBuffer (aBUff, byteSize, null);
// Console.WriteLine ("Buffer allocated, enqueueing");
// }
//New stuffs
var inputComponent = AudioComponent.FindNextComponent(
null,
new AudioComponentDescription
{
ComponentFlags = 0,
ComponentFlagsMask = 0,
ComponentManufacturer = AudioComponentManufacturerType.Apple,
ComponentSubType = (int)AudioTypeOutput.Remote,
ComponentType = AudioComponentType.Output
});
recorder = inputComponent.CreateAudioUnit();
recorder.SetEnableIO(true, AudioUnitScopeType.Input, inputBus);
recorder.SetEnableIO(false, AudioUnitScopeType.Output, outputBus);
var audioFormat = new AudioStreamBasicDescription
{
SampleRate = Globals.SAMPLERATE,
Format = AudioFormatType.LinearPCM,
FormatFlags = AudioFormatFlags.IsSignedInteger | AudioFormatFlags.IsPacked,
FramesPerPacket = 1,
ChannelsPerFrame = 1,
BitsPerChannel = 16,
BytesPerPacket = 2,
BytesPerFrame = 2
};
recorder.SetAudioFormat(audioFormat, AudioUnitScopeType.Output, inputBus);
recorder.SetAudioFormat(audioFormat, AudioUnitScopeType.Input, outputBus);
recorder.SetInputCallback(AudioInputCallBack, AudioUnitScopeType.Global, inputBus);
// TODO: Disable buffers (requires interop)
aBuffer = new AudioBuffer
{
NumberChannels = 1,
DataByteSize = 512 * 2,
Data = System.Runtime.InteropServices.Marshal.AllocHGlobal(512 * 2)
};
isTalking = true;
//recorder.InputCompleted += SendAudio;
//recorder.Start ();
recorder.Initialize ();
recorder.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()
{
// Getting Remote AudioComponent output
_audioComponent = AudioComponent.FindComponent(AudioTypeOutput.Remote);
// creating an audio unit instance
_audioUnit = AudioUnit.CreateInstance(_audioComponent);
// setting audio format
_audioUnit.SetAudioFormat(_dstFormat,
AudioUnitScopeType.Input,
0 // Remote Output
);
// setting callback method
_audioUnit.RenderCallback += new EventHandler<AudioUnitEventArgs>(_audioUnit_RenderCallback);
_audioUnit.Initialize();
}
void prepareAudioUnit()
{
// AudioSession
AudioSession.Initialize();
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.005f;
// Getting AudioComponent Remote output
_audioComponent = AudioComponent.FindComponent(AudioTypeOutput.Remote);
// creating an audio unit instance
_audioUnit = AudioUnit.CreateInstance(_audioComponent);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnitScopeType.Input,
1 // Remote Input
);
// setting audio format
_audioUnit.SetAudioFormat(_dstFormat,
AudioUnitScopeType.Input,
0 // Remote Output
);
_audioUnit.SetAudioFormat( AudioUnitUtils.AUCanonicalASBD(_sampleRate, 2),
AudioUnitScopeType.Output,
1 // Remote input
);
// setting callback method
_audioUnit.RenderCallback += new EventHandler<AudioUnitEventArgs>(_audioUnit_RenderCallback);
_audioUnit.Initialize();
_audioUnit.Start();
}
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 SetupRemoteIO()
{
AudioComponentDescription desc = new AudioComponentDescription ();
desc.ComponentType = AudioComponentType.Output;
desc.ComponentSubType = 0x72696f63;
desc.ComponentManufacturer = AudioComponentManufacturerType.Apple;
desc.ComponentFlags = 0;
desc.ComponentFlagsMask = 0;
var component = AudioComponent.FindNextComponent (null, desc);
rioUnit = new AudioUnit (component);
rioUnit.SetEnableIO (true, AudioUnitScopeType.Input, 1);
rioUnit.SetRenderCallback (renderDelegate, AudioUnitScopeType.Input, 0);
audioFormat = new AudioStreamBasicDescription();
audioFormat.Format = AudioFormatType.LinearPCM;
audioFormat.SampleRate = sampleRate;
audioFormat.ChannelsPerFrame = 2;
audioFormat.FramesPerPacket = 1;
audioFormat.BitsPerChannel = 8 * sizeof(int);
audioFormat.BytesPerPacket = sizeof(int);
audioFormat.BytesPerFrame = sizeof(int);
audioFormat.FormatFlags = AudioStreamBasicDescription.AudioFormatFlagsAudioUnitCanonical;
rioUnit.SetAudioFormat (audioFormat, AudioUnitScopeType.Input, 0);
rioUnit.SetAudioFormat (audioFormat, AudioUnitScopeType.Output, 1);
rioUnit.Initialize ();
unitCreated = true;
FFTBufferManager = new FFTBufferManager (maxFPS, this);
FFTBufferManager.Setup ();
rioUnit.Start ();
unitIsRunning = true;
}
void prepareAudioUnit ()
{
// AudioSession
AudioSession.Initialize ();
AudioSession.SetActive (true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.005f;
// Getting AudioComponent Remote output
_audioComponent = AudioComponent.FindComponent (AudioTypeOutput.Remote);
// creating an audio unit instance
_audioUnit = new AudioUnit (_audioComponent);
// turning on microphone
_audioUnit.SetEnableIO (true,
AudioUnitScopeType.Input,
1 // Remote Input
);
// setting audio format
_audioUnit.SetAudioFormat (_dstFormat,
AudioUnitScopeType.Input,
0 // Remote Output
);
var format = AudioStreamBasicDescription.CreateLinearPCM (_sampleRate, bitsPerChannel: 32);
format.FormatFlags = AudioStreamBasicDescription.AudioFormatFlagsAudioUnitCanonical;
_audioUnit.SetAudioFormat (format, AudioUnitScopeType.Output, 1);
// setting callback method
_audioUnit.SetRenderCallback (_audioUnit_RenderCallback, AudioUnitScopeType.Global);
_audioUnit.Initialize ();
_audioUnit.Start ();
}
void prepareAudioUnit()
{
// Updated for deprecated AudioSession
var session = AVAudioSession.SharedInstance();
NSError error;
if (session == null)
{
var alert = new UIAlertView("Session error", "Unable to create audio session", null, "Cancel");
alert.Show();
alert.Clicked += delegate
{
alert.DismissWithClickedButtonIndex(0, true);
return;
};
}
session.SetActive(true);
session.SetCategory(AVAudioSessionCategory.PlayAndRecord);
session.SetPreferredIOBufferDuration(0.005, out error);
// Getting AudioComponent Remote output
_audioComponent = AudioComponent.FindComponent(AudioTypeOutput.Remote);
// creating an audio unit instance
_audioUnit = new AudioUnit(_audioComponent);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnitScopeType.Input,
1 // Remote Input
);
// setting audio format
_audioUnit.SetAudioFormat(_dstFormat,
AudioUnitScopeType.Input,
0 // Remote Output
);
var format = AudioStreamBasicDescription.CreateLinearPCM(_sampleRate, bitsPerChannel: 32);
format.FormatFlags = AudioStreamBasicDescription.AudioFormatFlagsNativeFloat;
_audioUnit.SetAudioFormat(format, AudioUnitScopeType.Output, 1);
// setting callback method
_audioUnit.SetRenderCallback(_audioUnit_RenderCallback, AudioUnitScopeType.Global);
_audioUnit.Initialize();
_audioUnit.Start();
}