using System;using System.Windows.Forms;using System.Collections.Generic;using System.ComponentModel;using System.IO;using System.Net;using System.Text;using System.Runtime.InteropServices;using System.Drawing;using BATT.AudioModule;namespace BATT{ public partial class Form1 : Form { private BackgroundWorker backgroundWorker = new BackgroundWorker(); private string resultStr; private bool isRecord = false; private string accessToken = null; private SpeechModel speechModel = new SpeechModel(); private AutomaticSpeechRecognition testASR; private string tempStr = ""; // 存储转换后的音频文件的临时目录 private ISpeechRecorder recorder = new NAudioRecorder(); private bool switchRecord = true; private string str = null; public Form1() { InitializeComponent(); testASR = new AutomaticSpeechRecognition(speechModel); // 绑定拖放事件 richTextBoxResult.AllowDrop = true; } private void Form1_Load(object sender, EventArgs e) { // 向comboBox添加数据 List<KeyValuePair<string, string>> listItems = new List<KeyValuePair<string, string>>(); listItems.Add(new KeyValuePair<string, string>("中文", "zh")); listItems.Add(new KeyValuePair<string, string>("英语", "en")); listItems.Add(new KeyValuePair<string, string>("粤语", "ct")); comboBoxLan.DataSource = listItems; comboBoxLan.DisplayMember = "Key"; comboBoxLan.ValueMember = "Value"; comboBoxLan.SelectedIndex = 0; // 绑定事件以实现异步化 backgroundWorker.DoWork = new DoWorkEventHandler(backgroundWorker_DoWork); backgroundWorker.RunWorkerCompleted = new RunWorkerCompletedEventHandler(backgroundWorker_RunWorkerCompleted); // 从文件中获取令牌，避免远程服务器上的请求过多 if (!File.Exists(@".\token.dat")) { accessToken = testASR.GetStrAccess(); // 令牌文件不存在，发送请求 } else { string[] tokenInfo = File.ReadAllLines(@".\token.dat"); // 检查令牌是否过期 if (Convert.ToInt32(tokenInfo[1]) > ClassUtils.CurrentTime2Second()) { accessToken = tokenInfo[0]; } else { accessToken = testASR.GetStrAccess(); // 过期，再次请求刷新 } } speechModel.APIAccessToken = accessToken; // 更新 模式中的令牌 #region 鼠标悬停时显示提示 ToolTip toolTip = new ToolTip(); toolTip.SetToolTip(buttonRecord, "录音/停止录音"); toolTip.SetToolTip(comboBoxLan, "选择识别语言"); toolTip.SetToolTip(richTextBoxResult, "识别语音的内容"); #endregion } /// <summary> /// 开始录音/停止录音 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void buttonRecord_Click(object sender, EventArgs e) { if (switchRecord) { switchRecord = false; // 切换录音状态 buttonRecord.BackgroundImage = (Bitmap)Properties.Resources.ResourceManager.GetObject("采集结束"); if (recorder == null) { recorder = new NAudioRecorder(); } recorder.SetFileName("record.wav"); recorder.StartRec(); labelInfo.ForeColor = Color.SpringGreen; labelInfo.Text = "记录：正在采集."; } else { switchRecord = true; buttonRecord.BackgroundImage = (Bitmap)Properties.Resources.ResourceManager.GetObject("正在采集"); if (recorder == null) { return; } isRecord = true; recorder.StopRec(); recorder = null; string filePath = Environment.CurrentDirectory @"\record.wav"; StartRecognize(filePath); } } private void button1_Click(object sender, EventArgs e) { richTextBoxResult.Clear(); } private void StartRecognize(string apiRecord) { WavInfo wav = ClassUtils.GetWavInfo(apiRecord); //数据量 = (采样频率 × 采样位数 × 声道数 × 时间) / 8 //if ((double)(wav.datasize * 8) / (wav.dwsamplespersec * wav.wbitspersample * wav.wchannels) > 60) //{ // labelInfo.ForeColor = Color.HotPink; // labelInfo.Text = "Error: The audio file is too large!"; //} // 非8k/16k, 16bit 位深, 单声道的，进行格式转换 if (apiRecord.EndsWith(".mp3", StringComparison.CurrentCultureIgnoreCase) || int.Parse(wav.dwsamplespersec.ToString()) != 16000 || int.Parse(wav.wbitspersample.ToString()) != 16 || int.Parse(wav.wchannels.ToString()) != 1) { apiRecord = ClassUtils.Convert2Wav(apiRecord); // 音频文件转换为16k，16bit wav tempStr = apiRecord; } labelInfo.ForeColor = Color.SpringGreen; labelInfo.Text = "正在采集..."; KeyValuePair<string, string> keyVal = (KeyValuePair<string, string>)comboBoxLan.SelectedItem; speechModel.APILanguage = keyVal.Value; // 在组合框中获取值 if (backgroundWorker.IsBusy != true) { this.backgroundWorker.RunWorkerAsync(); // 做耗时的任务 } } #region 异步工作 private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e) { // 表示这是录制的音频 if (isRecord) { speechModel.APIRecord = System.Environment.CurrentDirectory @"\record.wav"; isRecord = false; } // 表示转换工作已经完成 if (tempStr != "") { speechModel.APIRecord = tempStr; } resultStr = testASR.GetStrText() "\r\n"; } private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { this.richTextBoxResult.Text = resultStr; labelInfo.ForeColor = Color.SpringGreen; labelInfo.Text = "识别完成!"; // 完成识别，删除临时目录 if (tempStr != "") { Directory.Delete(Path.GetDirectoryName(tempStr), true); // 递归删除目录或子目录 } } #endregion }}
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