【Unity】Unity Microphone录音 保存wav 功能

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Text;using UnityEngine;using System.Collections;[RequireComponent (typeof(AudioSource))]public class MicroPhoneInput : MonoBehaviour {private static MicroPhoneInput m_instance;private AudioClip clip;private string path_1; public float sensitivity=100;public float loudness=0;    private static string[] micArray=null;    const int HEADER_SIZE = 44;    const int RECORD_TIME = 10;// Use this for initializationvoid Start () {}//--------------------------------public static MicroPhoneInput getInstance(){if (m_instance == null) {            micArray = Microphone.devices;            if (micArray.Length == 0)            {                Debug.LogError ("Microphone.devices is null");            }            foreach (string deviceStr in Microphone.devices)            {                Debug.Log("device name = " + deviceStr);            }if(micArray.Length==0){Debug.LogError("no mic device");}GameObject MicObj=new GameObject("MicObj");m_instance= MicObj.AddComponent<MicroPhoneInput>();}return m_instance;}public void StartRecord(){        GetComponent<AudioSource>().Stop();        if (micArray.Length == 0)        {            Debug.Log("No Record Device!");            return;        }GetComponent<AudioSource>().loop = false;GetComponent<AudioSource>().mute = true;        GetComponent<AudioSource>().clip = Microphone.Start(null, false, RECORD_TIME, 44100); //22050 clip = GetComponent<AudioSource>().clip;while (!(Microphone.GetPosition(null)>0)) {}GetComponent<AudioSource>().Play ();        Debug.Log("StartRecord");        //倒计时        StartCoroutine(TimeDown());       }public  void StopRecord(){        if (micArray.Length == 0)        {            Debug.Log("No Record Device!");            return;        }        if (!Microphone.IsRecording(null))        {            return;        }Microphone.End (null);        GetComponent<AudioSource>().Stop();        Debug.Log("StopRecord");}public Byte[] GetClipData()    {        if (GetComponent<AudioSource>().clip == null)        {            Debug.Log("GetClipData audio.clip is null");            return null;         }        float[] samples = new float[GetComponent<AudioSource>().clip.samples];        GetComponent<AudioSource>().clip.GetData(samples, 0);Byte[] outData = new byte[samples.Length * 2];        //Int16[] intData = new Int16[samples.Length];        //converting in 2 float[] steps to Int16[], //then Int16[] to Byte[]        int rescaleFactor = 32767; //to convert float to Int16        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 intData;return outData;    }    public void PlayClipData(Int16[] intArr)    {        string aaastr = intArr.ToString();        long  aaalength=aaastr.Length;        Debug.LogError("aaalength=" + aaalength);string aaastr1 = Convert.ToString (intArr);aaalength = aaastr1.Length;Debug.LogError("aaalength=" + aaalength);        if (intArr.Length == 0)        {            Debug.Log("get intarr clipdata is null");            return;        }        //从Int16[]到float[]        float[] samples = new float[intArr.Length];        int rescaleFactor = 32767;        for (int i = 0; i < intArr.Length; i++)        {            samples[i] = (float)intArr[i] / rescaleFactor;        }                //从float[]到Clip        AudioSource audioSource = this.GetComponent<AudioSource>();        if (audioSource.clip == null)        {            audioSource.clip = AudioClip.Create("playRecordClip", intArr.Length, 1, 44100, false, false);        }        audioSource.clip.SetData(samples, 0);        audioSource.mute = false;        audioSource.Play();    }    public void PlayRecord(){        if (GetComponent<AudioSource>().clip == null)        {            Debug.Log("audio.clip=null");            return;        }GetComponent<AudioSource>().mute = false;GetComponent<AudioSource>().loop = false;GetComponent<AudioSource>().Play ();        Debug.Log("PlayRecord");}public  float GetAveragedVolume(){float[] data=new float[256];float a=0;GetComponent<AudioSource>().GetOutputData(data,0);foreach(float s in data){a+=Mathf.Abs(s);}return a/256;}// Update is called once per framevoid Update ()    {loudness = GetAveragedVolume () * sensitivity;if (loudness > 1) {Debug.Log("loudness = "+loudness);}}    private IEnumerator TimeDown()    {        Debug.Log(" IEnumerator TimeDown()");        int time = 0;        while (time < RECORD_TIME)        {if (!Microphone.IsRecording (null)) { //如果没有录制Debug.Log ("IsRecording false");yield break;}            Debug.Log("yield return new WaitForSeconds "+time);            yield return new WaitForSeconds(1);            time++;        }        if (time >= 10)        {            Debug.Log("RECORD_TIME is out! stop record!");            StopRecord();        }        yield return 0;    }public void SaveMusic(){Save ("123",clip);}//public void UnSaveMusic()//{//clip = null;//}//保存wav 模式public static bool Save(string filename, AudioClip clip) {Debug.Log(Application.persistentDataPath);if (!filename.ToLower().EndsWith(".wav")) {filename += ".wav";}#if UNITY_IPHONE//path_1 = Application.persistentDataPath;string filepath = Path.Combine(Application.persistentDataPath, filename);#endif#if UNITY_STANDALONE_WINstring filepath =  filename;#endif#if UNITY_ANDROIDstring filepath = Path.Combine(Application.persistentDataPath, filename);#endif//string filepath = Path.Combine(Application.persistentDataPath, filename);Debug.Log(filepath);// Make sure directory exists if user is saving to sub dir.Directory.CreateDirectory(Path.GetDirectoryName(filepath));using (FileStream fileStream = CreateEmpty(filepath)) {ConvertAndWrite(fileStream, clip);WriteHeader(fileStream, clip);}return true; // TODO: return false if there's a failure saving the file}static FileStream CreateEmpty(string filepath) {FileStream fileStream = new FileStream(filepath, FileMode.Create);byte emptyByte = new byte();for(int i = 0; i < HEADER_SIZE; i++) //preparing the header{fileStream.WriteByte(emptyByte);}return fileStream;}static void ConvertAndWrite(FileStream fileStream, AudioClip clip) {float[] samples = new float[clip.samples];clip.GetData(samples, 0);Int16[] intData = new Int16[samples.Length];//converting in 2 float[] steps to Int16[], //then Int16[] to Byte[]Byte[] bytesData = new Byte[samples.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 Int16for (int i = 0; i<samples.Length; i++) {intData[i] = (short) (samples[i] * rescaleFactor);Byte[] byteArr = new Byte[2];byteArr = BitConverter.GetBytes(intData[i]);byteArr.CopyTo(bytesData, i * 2);}fileStream.Write(bytesData, 0, bytesData.Length);}static void WriteHeader(FileStream fileStream, AudioClip clip) {int hz = clip.frequency;int channels = clip.channels;int samples = clip.samples;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(channels);fileStream.Write(numChannels, 0, 2);Byte[] sampleRate = BitConverter.GetBytes(hz);fileStream.Write(sampleRate, 0, 4);Byte[] byteRate = BitConverter.GetBytes(hz * channels * 2); // sampleRate * bytesPerSample*number of channels, here 44100*2*2fileStream.Write(byteRate, 0, 4);UInt16 blockAlign = (ushort) (channels * 2);fileStream.Write(BitConverter.GetBytes(blockAlign), 0, 2);UInt16 bps = 16;Byte[] bitsPerSample = BitConverter.GetBytes(bps);fileStream.Write(bitsPerSample, 0, 2);Byte[] datastring = System.Text.Encoding.UTF8.GetBytes("data");fileStream.Write(datastring, 0, 4);Byte[] subChunk2 = BitConverter.GetBytes(samples * channels * 2);fileStream.Write(subChunk2, 0, 4);//fileStream.Close();}}