unsafe void TapPrepare(MTAudioProcessingTap tap, nint maxFrames, ref AudioStreamBasicDescription processingFormat)
{
// Store sample rate for CenterFrequency property
context.SampleRate = processingFormat.SampleRate;
/* Verify processing format (this is not needed for Audio Unit, but for RMS calculation). */
VerifyProcessingFormat(processingFormat);
if (processingFormat.FormatFlags.HasFlag(AudioFormatFlags.IsNonInterleaved))
{
context.IsNonInterleaved = true;
}
/* Create bandpass filter Audio Unit */
var audioComponentDescription = AudioComponentDescription.CreateEffect(AudioTypeEffect.BandPassFilter);
// TODO: https://trello.com/c/GZUGUyH0
var audioComponent = AudioComponent.FindNextComponent(null, ref audioComponentDescription);
if (audioComponent == null)
{
return;
}
AudioUnitStatus error = AudioUnitStatus.NoError;
AudioUnit.AudioUnit audioUnit = audioComponent.CreateAudioUnit();
try {
audioUnit.SetAudioFormat(processingFormat, AudioUnitScopeType.Input);
audioUnit.SetAudioFormat(processingFormat, AudioUnitScopeType.Output);
} catch (AudioUnitException) {
error = AudioUnitStatus.FormatNotSupported;
}
if (error == AudioUnitStatus.NoError)
{
error = audioUnit.SetRenderCallback(Render, AudioUnitScopeType.Input);
}
if (error == AudioUnitStatus.NoError)
{
error = audioUnit.SetMaximumFramesPerSlice((uint)maxFrames, AudioUnitScopeType.Global);
}
if (error == AudioUnitStatus.NoError)
{
error = (AudioUnitStatus)audioUnit.Initialize();
}
if (error != AudioUnitStatus.NoError)
{
audioUnit.Dispose();
audioUnit = null;
}
context.AudioUnit = audioUnit;
}
private AudioComponent GetHALAudioComponent()
{
var componentDescription = new AudioComponentDescription()
{
ComponentType = AudioComponentType.Output,
ComponentSubType = (int)AudioUnitSubType.HALOutput,
ComponentManufacturer = AudioComponentManufacturerType.Apple,
};
return(AudioComponent.FindNextComponent(null, ref componentDescription));
}
theUnit GetAudioUnitForTest()
{
AudioComponentDescription desc = new AudioComponentDescription();
desc.ComponentType = AudioComponentType.Output;
desc.ComponentSubType = 1634230636; // 'ahal'
desc.ComponentFlags = 0;
desc.ComponentFlagsMask = 0;
desc.ComponentManufacturer = AudioComponentManufacturerType.Apple;
AudioComponent comp = AudioComponent.FindNextComponent(null, ref desc);
theUnit unit = new theUnit(comp);
return(unit);
}
public IOSAudioProcessor()
{
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 = StudentDemo.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)
};
}
unsafe void TapPrepare(MTAudioProcessingTap tap, nint maxFrames, ref AudioStreamBasicDescription processingFormat)
{
// Store sample rate for CenterFrequency property
context.SampleRate = processingFormat.SampleRate;
/* Verify processing format (this is not needed for Audio Unit, but for RMS calculation). */
VerifyProcessingFormat(processingFormat);
if (processingFormat.FormatFlags.HasFlag(AudioFormatFlags.IsNonInterleaved))
{
context.IsNonInterleaved = true;
}
/* Create bandpass filter Audio Unit */
var audioComponentDescription = AudioComponentDescription.CreateEffect(AudioTypeEffect.NBandEq);
// TODO: https://trello.com/c/GZUGUyH0
var audioComponent = AudioComponent.FindNextComponent(null, ref audioComponentDescription);
if (audioComponent == null)
{
return;
}
var error = AudioUnitStatus.NoError;
var audioUnit = audioComponent.CreateAudioUnit();
try
{
audioUnit.SetFormat(processingFormat, AudioUnitScopeType.Input);
audioUnit.SetFormat(processingFormat, AudioUnitScopeType.Output);
}
catch (AudioUnitException)
{
error = AudioUnitStatus.FormatNotSupported;
}
if (error == AudioUnitStatus.NoError)
{
error = audioUnit.SetRenderCallback(Render, AudioUnitScopeType.Input);
}
if (error == AudioUnitStatus.NoError)
{
error = audioUnit.SetMaximumFramesPerSlice((uint)maxFrames, AudioUnitScopeType.Global);
}
if (error == AudioUnitStatus.NoError)
{
error = (AudioUnitStatus)audioUnit.Initialize();
}
if (error != AudioUnitStatus.NoError)
{
audioUnit.Dispose();
audioUnit = null;
}
context.AudioUnit = audioUnit;
uint value = 10;
uint size = sizeof(uint);
var stat = AudioUnitSetProperty(audioUnit.Handle, AUNGraphicParams.NumberOfBands, AudioUnitScopeType.Global, 0,
ref value, size);
for (var i = 0; i < Parent.Bands.Length; i++)
{
var band = Parent.Bands[i];
var freq = context.AudioUnit.SetParameter(AudioUnitParameterType.AUNBandEQFrequency + i, band.Center,
AudioUnitScopeType.Global);
var bypass = context.AudioUnit.SetParameter(AudioUnitParameterType.AUNBandEQBypassBand + i, 0,
AudioUnitScopeType.Global);
SetBand(i, band.Gain);
Console.WriteLine(freq);
}
}
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();
}