Unity原生实现录音功能

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class MicphoneTest : MonoBehaviour
{
AudioSource _audio;
AudioSource audio
{
get
{
if (_audio == null)
{
_audio = gameObject.AddComponent<AudioSource>();
}
return _audio;
}
}

void Start()
{
string[] ms = Microphone.devices;
deviceCount = ms.Length;
if (deviceCount == 0)
{
Log("no microphone found");
}
}

string sLog = "";
void Log(string log)
{
sLog += log;
sLog += "\r\n";
}
int deviceCount;
string sFrequency = "10000";
void OnGUI()
{
if (deviceCount > 0)
{
GUILayout.BeginHorizontal();
if (!Microphone.IsRecording(null) && GUILayout.Button("Start", GUILayout.Height(Screen.height / 20), GUILayout.Width(Screen.width / 5)))
{
StartRecord();
}
if (Microphone.IsRecording(null) && GUILayout.Button("Stop", GUILayout.Height(Screen.height / 20), GUILayout.Width(Screen.width / 5)))
{
StopRecord();
}
if (!Microphone.IsRecording(null) && GUILayout.Button("Play", GUILayout.Height(Screen.height / 20), GUILayout.Width(Screen.width / 5)))
{
PlayRecord();
}
if (!Microphone.IsRecording(null) && GUILayout.Button("Print", GUILayout.Height(Screen.height / 20), GUILayout.Width(Screen.width / 5)))
{
PrintRecord();
}
sFrequency = GUILayout.TextField(sFrequency, GUILayout.Width(Screen.width / 5), GUILayout.Height(Screen.height / 20));
GUILayout.EndHorizontal();
}
GUILayout.Label(sLog);
}
void StartRecord()
{
audio.Stop();
audio.loop = false;
audio.mute = true;
audio.clip = Microphone.Start(null, false, 1, int.Parse(sFrequency));
while (!(Microphone.GetPosition(null) > 0))
{
}
audio.Play();
Log("StartRecord");
}
void StopRecord()
{
if (!Microphone.IsRecording(null))
{
return;
}
Microphone.End(null);
audio.Stop();
}
void PrintRecord()
{
if (Microphone.IsRecording(null))
{
return;
}
byte[] data = GetClipData();
string slog = "total length:" + data.Length + " time:" + audio.time;
Log(slog);
}
void PlayRecord()
{
if (Microphone.IsRecording(null))
{
return;
}
if (audio.clip == null)
{
return;
}
audio.mute = false;
audio.loop = false;
audio.Play();
}
public byte[] GetClipData()
{
if (audio.clip == null)
{
Debug.Log("GetClipData audio.clip is null");
return null;
}

float[] samples = new float[audio.clip.samples];

audio.clip.GetData(samples, 0);

byte[] outData = new byte[samples.Length * 2];

int rescaleFactor = 32767;

for (int i = 0; i < samples.Length; i++)
{
short temshort = (short)(samples[i] * rescaleFactor);

byte[] temdata = System.BitConverter.GetBytes(temshort);

outData[i * 2] = temdata[0];
outData[i * 2 + 1] = temdata[1];

}
if (outData == null || outData.Length <= 0)
{
Debug.Log("GetClipData intData is null");
return null;
}
return outData;
}

}