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();
}
public override bool initializeAudio()
{
try {
recorder.Initialize();
recorder.Start();
return(true);
} catch {
}
return(false);
}
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();
}
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 configureAndStartAudioProcessingGraph(AUGraph graph)
{
int result = 0;
uint framesPerSlice = 0;
result = ioUnit.Initialize();
if (result != 0)
{
throw new Exception("Unable to Initialize the I/O unit. Error code: " + result);
}
var status = ioUnit.SetSampleRate(graphSampleRate, AudioUnitScopeType.Output);
if (status != AudioUnitStatus.NoError)
{
throw new Exception("AudioUnitSetProperty (set Sample output stream sample rate). Error code: " + (int)status);
}
framesPerSlice = ioUnit.GetMaximumFramesPerSlice(AudioUnitScopeType.Global);
samplerUnit.SetSampleRate(graphSampleRate, AudioUnitScopeType.Output);
samplerUnit.SetMaximumFramesPerSlice(framesPerSlice, AudioUnitScopeType.Global);
if (graph != null)
{
result = (int)graph.Initialize();
if (result != (int)AUGraphError.OK)
{
throw new Exception("Unable to initialize AUGraph object. Error code: " + result);
}
result = (int)graph.Start();
if (result != (int)AUGraphError.OK)
{
throw new Exception("Unable to start audio processing graph. Error code: " + result);
}
// TODO: CAShow
Console.WriteLine(graph);
}
}
public SoundWAVInstance(SoundWAV sound, bool looped)
: base(sound)
{
this.sound = sound;
this.looped = looped;
State = SoundStates.Stopped;
volume = 1;
instance = new AudioUnit(sound.audio.component);
instance.SetAudioFormat(sound.desc, AudioUnitScopeType.Input, 0);
if (sound.channels == 2)
{
switch (sound.bitDepth)
{
case 8: instance.RenderCallback += render2Channel8BitCallback; break;
case 16: instance.RenderCallback += render2Channel16BitCallback; break;
default: Debug.ThrowError("SoundWAVInstance", "Unsuported WAV bit depth"); break;
}
}
else
{
switch (sound.bitDepth)
{
case 8: instance.RenderCallback += render1Channel8BitCallback; break;
case 16: instance.RenderCallback += render1Channel16BitCallback; break;
default: Debug.ThrowError("SoundWAVInstance", "Unsuported WAV bit depth"); break;
}
}
instance.Initialize();
#if iOS
OS.CurrentApplication.PauseCallback += Pause;
OS.CurrentApplication.ResumeCallback += resume;
#endif
}
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();
}
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();
}
public SoundWAVInstance(SoundWAV sound, bool looped)
: base(sound)
{
this.sound = sound;
this.looped = looped;
State = SoundStates.Stopped;
volume = 1;
instance = new AudioUnit(sound.audio.component);
instance.SetAudioFormat(sound.desc, AudioUnitScopeType.Input, 0);
if (sound.channels == 2)
{
switch (sound.bitDepth)
{
case 8: instance.RenderCallback += render2Channel8BitCallback; break;
case 16: instance.RenderCallback += render2Channel16BitCallback; break;
default: Debug.ThrowError("SoundWAVInstance", "Unsuported WAV bit depth"); break;
}
}
else
{
switch (sound.bitDepth)
{
case 8: instance.RenderCallback += render1Channel8BitCallback; break;
case 16: instance.RenderCallback += render1Channel16BitCallback; break;
default: Debug.ThrowError("SoundWAVInstance", "Unsuported WAV bit depth"); break;
}
}
instance.Initialize();
#if iOS
OS.CurrentApplication.PauseCallback += Pause;
OS.CurrentApplication.ResumeCallback += resume;
#endif
}
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();
}