338 lines
8.8 KiB
C#
338 lines
8.8 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using System.IO;
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using UnityEngine.Networking;
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using System.Text;
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using System.Security.Cryptography;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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using UnityEngine.UI;
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public class MicrophoneInput : MonoBehaviour
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{
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public static MicrophoneInput instance;
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public AudioSource audioSource;
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/// <summary>
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/// 最大录音时长
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/// </summary>
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public int lengthSec = 30;
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/// <summary>
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/// 采样频率
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/// </summary>
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private int frequency = 16000;
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private string savePath;
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/// <summary>
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/// 录音时长
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/// </summary>
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public float recordTime;
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private void Awake()
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{
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instance = this;
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savePath = Application.persistentDataPath + "/audios/micro.wav";
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audioSource = gameObject.AddComponent<AudioSource>();
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audioSource.playOnAwake = false;
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if (!Directory.Exists(Path.GetDirectoryName(savePath)))
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{
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Directory.CreateDirectory(Path.GetDirectoryName(savePath));
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}
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if (!File.Exists(savePath))
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{
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File.Create(savePath);
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}
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}
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private void Update()
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{
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if (Microphone.IsRecording(null))
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{
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recordTime += Time.deltaTime;
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}
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}
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/// <summary>
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/// 检查录音权限,并开始录制
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/// </summary>
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[ContextMenu("开始录音")]
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public void OnStartClick()
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{
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Debug.Log("OnStartClick");
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if (!CheckMicrophone())
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{
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Debug.LogError("无录音权限,获取中，请重新说话");
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MyDebugger.Log("无录音权限,获取中，请重新说话");
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StartCoroutine(RequestMicrophoneAuth());
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return;
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}
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StartRecord();
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}
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/// <summary>
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/// 检测麦克风
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/// </summary>
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/// <returns></returns>
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public bool CheckMicrophone()
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{
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return Application.HasUserAuthorization(UserAuthorization.Microphone);
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}
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[ContextMenu("结束录音,开始识别")]
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public void MyStop()
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{
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OnStopClick(str =>
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{
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Debug.Log("识别完成: "+str);
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});
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}
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/// <summary>
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/// 停止录制,并转文字
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/// </summary>
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public void OnStopClick(Action<string> callback)
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{
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Debug.Log("OnStopClick");
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int length = StopRecord();
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Debug.Log("录音返回长度：" + length);
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if (length > 0)
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{
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TransToText(callback);
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}
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else
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{
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MyDebugger.Log("没录音数据");
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}
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}
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/// <summary>
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/// 播放录音
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/// </summary>
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public void PlayAudio()
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{
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//读取本地文件播放
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ReadAudioFile(savePath);
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}
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public IEnumerator RequestMicrophoneAuth()
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{
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yield return Application.RequestUserAuthorization(UserAuthorization.Microphone);
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}
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private void StartRecord()
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{
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if (Microphone.devices.Length > 0)
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{
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if (!Microphone.IsRecording(null))
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{
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Debug.Log("开始录音");
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audioSource.Stop();
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audioSource.loop = false;
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audioSource.mute = true;
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audioSource.clip = Microphone.Start(null, false, lengthSec, frequency);
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MyDebugger.Log("录音中");
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recordTime = 0;
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}
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else
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{
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Debug.Log("当前正在录音，请先停止录音");
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}
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}
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else
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{
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Debug.Log("无麦克风");
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MyDebugger.Log("无麦克风");
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}
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}
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/// <summary>
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/// 单纯停止录音
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/// </summary>
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/// <returns></returns>
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public int StopRecord()
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{
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int length = Microphone.GetPosition(null);
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Microphone.End(null);
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return length;
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}
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public void TransToText(Action<string> callback)
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{
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if (audioSource.clip != null && audioSource.clip.length > 0)
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{
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byte[] file = WavUtility.FromAudioClip(audioSource.clip, savePath, true);
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Debug.Log("TransToText长度：" + file.Length); ;
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IFlytekManager.instance.AudioToText(file, str =>
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{
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callback(str);
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});
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}
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}
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public bool SaveAudioFile(string filePath, int length)
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{
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if (Microphone.IsRecording(null))
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return false;
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byte[] data = GetClipData(audioSource, length);
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if (data == null)
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{
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return false;
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}
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File.WriteAllBytes(filePath, data);
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string infoLog = "total length:" + data.Length + " time:" + audioSource.time+" path:"+ filePath;
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Debug.Log(infoLog);
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return true;
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}
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public void ReadAudioFile(string filePath)
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{
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byte[] bytes = File.ReadAllBytes(filePath);
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float[] samples = byte2float(bytes);
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var clip = audioSource.clip;
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audioSource.Stop();
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audioSource.clip = AudioClip.Create(clip.name, samples.Length, clip.channels, clip.frequency, false);
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audioSource.clip.SetData(samples, 0);
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audioSource.mute = false;
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audioSource.Play();
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}
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byte[] GetClipData(AudioSource source, int length)
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{
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if (length < 10)
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{
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Debug.Log("录音文件太短");
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return null;
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}
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float[] samples = new float[length];
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source.clip.GetData(samples, 0);
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byte[] outData = float2byte(samples);
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return outData;
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}
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byte[] float2byte(float[] floats)
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{
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byte[] outData = new byte[floats.Length * 2];
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int reScaleFactor = 32767;
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for (int i = 0; i < floats.Length; i++)
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{
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short tempShort = (short)(floats[i] * reScaleFactor);
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byte[] tempData = BitConverter.GetBytes(tempShort);
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outData[i * 2] = tempData[0];
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outData[i * 2 + 1] = tempData[1];
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}
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return outData;
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}
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float[] byte2float(byte[] bytes)
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{
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float reScaleFactor = 32768.0f;
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float[] data = new float[bytes.Length / 2];
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for (int i = 0; i < bytes.Length; i += 2)
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{
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short s;
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if (BitConverter.IsLittleEndian) //小端和大端顺序要调整
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s = (short)((bytes[i + 1] << 8) | bytes[i]);
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else
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s = (short)((bytes[i] << 8) | bytes[i + 1]);
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// convert to range from -1 to (just below) 1
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data[i / 2] = s / reScaleFactor;
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}
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return data;
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}
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//private IEnumerator CallAudioToString(string fileName,long fileSize)
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//{
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// string ts = GetTimeStampSecond().ToString();
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// var a = new { duration = 200, fileName = fileName, fileSize = fileSize, signa = GetSigna(ts), ts = ts, appId = APPID };
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// UnityWebRequest request = UnityWebRequest.Post("https://raasr.xfyun.cn/v2/api/upload", JsonConvert.SerializeObject(a));
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// request.uploadHandler.contentType = "application/json";
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// yield return request.SendWebRequest();
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// if(!request.isNetworkError && !request.isHttpError)
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// {
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// Debug.Log(request.downloadHandler.text);
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// audioText.text = request.downloadHandler.text;
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// }
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// else
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// {
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// audioText.text = request.downloadHandler.error;
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// }
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//}
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//private string GetSigna(string ts)
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//{
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// string md5str = MD5(APPID + ts);
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// string hmacStr= HMACSHA1Text(md5str, SecretKey);
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// return hmacStr;
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//}
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/// <summary>
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/// 获取时间戳-单位秒
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/// </summary>
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/// <returns></returns>
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private int GetTimeStampSecond()
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{
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TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
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return Convert.ToInt32(ts.TotalSeconds);
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}
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/// <summary>
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/// 字符串MD5加密
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/// </summary>
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/// <param name="Text">要加密的字符串</param>
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/// <returns>密文</returns>
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private string MD5(string Text)
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{
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byte[] buffer = Encoding.UTF8.GetBytes(Text);
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System.Security.Cryptography.MD5CryptoServiceProvider check;
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check = new System.Security.Cryptography.MD5CryptoServiceProvider();
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byte[] somme = check.ComputeHash(buffer);
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string ret = "";
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foreach (byte a in somme)
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{
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if (a < 16)
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ret += "0" + a.ToString("X");
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else
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ret += a.ToString("X");
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}
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return ret.ToLower();
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}
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private string HMACSHA1Text(string text, string key)
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{
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//HMACSHA1加密
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HMACSHA1 hmacsha1 = new HMACSHA1();
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hmacsha1.Key = Encoding.UTF8.GetBytes(key);
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byte[] dataBuffer =Encoding.UTF8.GetBytes(text);
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byte[] hashBytes = hmacsha1.ComputeHash(dataBuffer);
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return Convert.ToBase64String(hashBytes);
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}
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}
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