80 lines
2.8 KiB
C#
80 lines
2.8 KiB
C#
|
using System;
|
|||
|
|
using UnityEngine;
|
|||
|
|
|
|||
|
|
namespace Normal.Realtime {
|
|||
|
|
public class MicrophoneDevice : IDisposable {
|
|||
|
|
// TODO: Find a better way to do this which supports multiple devices!
|
|||
|
|
public static MicrophoneDevice sharedMicrophone { get; private set; }
|
|||
|
|
private AudioClip _microphone;
|
|||
|
|
private string _deviceName;
|
|||
|
|
|
|||
|
|
private int _sampleRate;
|
|||
|
|
private int _numberOfChannels;
|
|||
|
|
private int _sampleCount;
|
|||
|
|
|
|||
|
|
public int sampleRate { get { return _sampleRate; } }
|
|||
|
|
public int numberOfChannels { get { return _numberOfChannels; } }
|
|||
|
|
public int deviceWriteHeadPosition { get { return Microphone.GetPosition(_deviceName); } }
|
|||
|
|
public int deviceBufferSampleCount { get { return _sampleCount; } }
|
|||
|
|
|
|||
|
|
public static MicrophoneDevice Start(string deviceName) {
|
|||
|
|
if (Microphone.devices.Length <= 0)
|
|||
|
|
return null;
|
|||
|
|
|
|||
|
|
int idealFrequency = 48000; // Ideal for OPUS
|
|||
|
|
int frequency = idealFrequency;
|
|||
|
|
int minimumFrequency;
|
|||
|
|
int maximumFrequency;
|
|||
|
|
Microphone.GetDeviceCaps(deviceName, out minimumFrequency, out maximumFrequency);
|
|||
|
|
|
|||
|
|
if (idealFrequency < minimumFrequency)
|
|||
|
|
frequency = minimumFrequency;
|
|||
|
|
else if (idealFrequency > maximumFrequency && maximumFrequency > 0)
|
|||
|
|
frequency = maximumFrequency;
|
|||
|
|
|
|||
|
|
AudioClip microphone = Microphone.Start(deviceName, true, 1, frequency);
|
|||
|
|
if (microphone == null)
|
|||
|
|
return null;
|
|||
|
|
|
|||
|
|
return new MicrophoneDevice(deviceName, microphone);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
MicrophoneDevice(string deviceName, AudioClip microphone) {
|
|||
|
|
// TODO: Add explicit Microphone.Start/Microphone.Stop?
|
|||
|
|
_deviceName = deviceName;
|
|||
|
|
_microphone = microphone;
|
|||
|
|
_sampleRate = _microphone.frequency;
|
|||
|
|
_numberOfChannels = _microphone.channels;
|
|||
|
|
_sampleCount = _microphone.samples;
|
|||
|
|
|
|||
|
|
sharedMicrophone = this;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
~MicrophoneDevice() {
|
|||
|
|
if (sharedMicrophone == this)
|
|||
|
|
sharedMicrophone = null;
|
|||
|
|
|
|||
|
|
Dispose(false);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Ideally called whenever someone is done using a microphone device.
|
|||
|
|
public void Dispose() {
|
|||
|
|
Dispose(true);
|
|||
|
|
GC.SuppressFinalize(this);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void Dispose(bool disposing) {
|
|||
|
|
if (_microphone != null) {
|
|||
|
|
Microphone.End(_deviceName);
|
|||
|
|
_microphone = null;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public bool GetBufferData(float[] buffer, int offsetSamples) {
|
|||
|
|
if (_microphone != null)
|
|||
|
|
return _microphone.GetData(buffer, offsetSamples);
|
|||
|
|
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|