Switch audio between microphone and unity audio while recording

[SridharaQweebi]

I would like to switch between audio source while recoding . currently audio source can be switch only before recoding start.

[kahnivore]

Which platform are you using?

[SridharaQweebi]

we want to have this option for all platform. I tried to capture microphone as UnityAudioCapture, but its not working, Please find attached script. So we can switch source or alter read function to read from 2 different source.

[SridharaQweebi]

public class AVGMicrophoneCapture : UnityAudioCapture { [SerializeField] bool _debugLogging = false; [SerializeField] bool _muteAudio = false;

private const int BufferSize = 16;
private float[] _buffer = new float[0];
private float[] _readBuffer = new float[0];
private int _bufferIndex;
private GCHandle _bufferHandle;
private int _numChannels;

private int _overflowCount;
private object _lockObject = new object();


public float[] Buffer { get { return _readBuffer; } }
public int BufferLength { get { return _bufferIndex; } }
public System.IntPtr BufferPtr { get { return _bufferHandle.AddrOfPinnedObject(); } }

public override int OverflowCount { get { return _overflowCount; } }
public override int SampleRate { get { return AudioSettings.outputSampleRate; } }
public override int ChannelCount { get { return _numChannels; } }

public UnityAudioCapture MicrophoneCatpte;
AudioSource microphoneSource;
private bool isRecording = false;
public override void PrepareCapture()
{
	int bufferLength = 0;
	int numBuffers = 0;
	AudioSettings.GetDSPBufferSize(out bufferLength, out numBuffers);

	_numChannels = GetUnityAudioChannelCount();
	if (_debugLogging)
	{
		Debug.Log(string.Format("[UnityAudioCapture] SampleRate: {0}hz SpeakerMode: {1} BestDriverMode: {2} (DSP using {3} buffers of {4} bytes using {5} channels)", AudioSettings.outputSampleRate, AudioSettings.speakerMode.ToString(), AudioSettings.driverCapabilities.ToString(), numBuffers, bufferLength, _numChannels));
	}

	_buffer = new float[bufferLength * _numChannels * numBuffers * BufferSize];
	_readBuffer = new float[bufferLength * _numChannels * numBuffers * BufferSize];
	_bufferIndex = 0;
	_bufferHandle = GCHandle.Alloc(_readBuffer, GCHandleType.Pinned);
	_overflowCount = 0;

	//MicrophoneCatpte.PrepareCapture();
	if(microphoneSource == null)
            {
			microphoneSource = gameObject.AddComponent<AudioSource>();
			microphoneSource.mute =
			microphoneSource.loop = true;
			microphoneSource.bypassEffects =
			microphoneSource.bypassListenerEffects = false;
	}
}

public override void StartCapture()
{
	FlushBuffer();
	microphoneSource.clip = Microphone.Start(null, true, 10, AudioSettings.outputSampleRate);
	microphoneSource.Play();
	isRecording = true;
}

public override void StopCapture()
{
	lock (_lockObject)
	{
		_bufferIndex = 0;
		if (_bufferHandle.IsAllocated)
			_bufferHandle.Free();
		_readBuffer = _buffer = null;
	}
	_numChannels = 0;
	Microphone.End(null);
	isRecording = false;
}

public override System.IntPtr ReadData(out int length)
{

	lock (_lockObject)
	{
		System.Array.Copy(_buffer, 0, _readBuffer, 0, _bufferIndex);
		length = _bufferIndex;
		_bufferIndex = 0;
	}
	Debug.LogError("data" + _readBuffer.Length);
	return _bufferHandle.AddrOfPinnedObject();

}

public override void FlushBuffer()
{
	lock (_lockObject)
	{
		_bufferIndex = 0;
		_overflowCount = 0;
	}
}

private void OnAudioFilterRead(float[] data, int channels)
{
	if (!isRecording)
	{
		return;
	}
	Debug.LogError("data" + isRecording);
	if (_buffer != null && _buffer.Length > 0)
	{
		lock (_lockObject)
		{
			int length = Mathf.Min(data.Length, _buffer.Length - _bufferIndex);
			if (!_muteAudio)
			{
				for (int i = 0; i < length; i++)
				{
					_buffer[i + _bufferIndex] = data[i];
				}
			}
			else
			{
				for (int i = 0; i < length; i++)
				{
					_buffer[i + _bufferIndex] = data[i];
					data[i] = 0f;
				}
			}
			_bufferIndex += length;

			if (length < data.Length)
			{
				_overflowCount++;
				Debug.LogWarning("[AVProMovieCapture] Audio buffer overflow, may cause sync issues.  Disable this component if not recording Unity audio.");
			}
		}
	}
}

}

[SridharaQweebi]

any update ?