把以下程式碼丟到攝影機 ( 或者含有 Audio Listener 的物件)，然後在遊戲中按下 R 鍵開始錄製，在案一次 R 鍵可停止錄製，並且在專案下會自動產生錄製好的 WAV 檔。
using UnityEngine;
using UnityEngine;
using System.Collections;
using System.IO;
using System;
public class SaveWav : MonoBehaviour {
private int bufferSize = 0;
private int numBuffers = 0;
private int outputRate= 44100;
private string fileName = "recTest.wav";
private int headerSize = 44; //default for uncompressed wav
private bool recOutput = false;
private FileStream fileStream;
void Awake() {
AudioSettings.outputSampleRate = outputRate;
}
void Start() {
AudioSettings.GetDSPBufferSize(out bufferSize, out numBuffers);
}
void Update() {
if(Input.GetKeyDown("r")) {
if(recOutput == false) {
StartWriting(fileName);
recOutput = true;
print("rec");
} else {
recOutput = false;
WriteHeader();
print("rec stop");
}
}
}
void StartWriting(String name) {
fileStream = new FileStream(name, FileMode.Create);
byte emptyByte = new byte();
for(int i = 0; i<headerSize; i++) { //preparing the header
fileStream.WriteByte(emptyByte);
}
}
void OnAudioFilterRead(float[] data, int channels) {
if(recOutput) {
ConvertAndWrite(data); //audio data is interlaced
}
}
void ConvertAndWrite(float[] dataSource) {
Int16[] intData = new Int16[dataSource.Length];
//converting in 2 steps : float[] to Int16[], //then Int16[] to Byte[]
Byte[] bytesData = new Byte[dataSource.Length*2];
//bytesData array is twice the size of
//dataSource array because a float converted in Int16 is 2 bytes.
int rescaleFactor = 32767; //to convert float to Int16
for (int i = 0; i<dataSource.Length; i++)
{
intData[i] = (Int16)( dataSource[i]*rescaleFactor);
Byte[] byteArr = new Byte[2];
byteArr = BitConverter.GetBytes(intData[i]);
byteArr.CopyTo(bytesData,i*2);
}
fileStream.Write(bytesData,0,bytesData.Length);
}
void WriteHeader() {
fileStream.Seek(0,SeekOrigin.Begin);
Byte[] riff = System.Text.Encoding.UTF8.GetBytes("RIFF");
fileStream.Write(riff,0,4);
Byte[] chunkSize = BitConverter.GetBytes(fileStream.Length-8);
fileStream.Write(chunkSize,0,4);
Byte[] wave = System.Text.Encoding.UTF8.GetBytes("WAVE");
fileStream.Write(wave,0,4);
Byte[] fmt = System.Text.Encoding.UTF8.GetBytes("fmt ");
fileStream.Write(fmt,0,4);
Byte[] subChunk1 = BitConverter.GetBytes(16);
fileStream.Write(subChunk1,0,4);
UInt16 two = 2;
UInt16 one = 1;
Byte[] audioFormat = BitConverter.GetBytes(one);
fileStream.Write(audioFormat,0,2);
Byte[] numChannels = BitConverter.GetBytes(two);
fileStream.Write(numChannels,0,2);
Byte[] sampleRate = BitConverter.GetBytes(outputRate);
fileStream.Write(sampleRate,0,4);
Byte[] byteRate = BitConverter.GetBytes(outputRate*4);
// sampleRate * bytesPerSample*number of channels, here 44100*2*2
fileStream.Write(byteRate,0,4);
UInt16 four = 4;
Byte[] blockAlign = BitConverter.GetBytes(four);
fileStream.Write(blockAlign,0,2);
UInt16 sixteen = 16;
Byte[] bitsPerSample = BitConverter.GetBytes(sixteen);
fileStream.Write(bitsPerSample,0,2);
Byte[] dataString = System.Text.Encoding.UTF8.GetBytes("data");
fileStream.Write(dataString,0,4);
Byte[] subChunk2 = BitConverter.GetBytes(fileStream.Length-headerSize);
fileStream.Write(subChunk2,0,4);
fileStream.Close();
}
}
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