实例介绍
【实例简介】
【实例截图】
【核心代码】
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 | using NAudio.Wave;using System;using System.Collections.Generic;using System.Collections.ObjectModel;using System.ComponentModel;using System.IO;using System.Threading.Tasks;using System.Windows;namespace WpfApp1{ /// <summary> /// MainWindow.xaml 的交互逻辑 /// </summary> public partial class MainWindow : Window, INotifyPropertyChanged { NAudioRecorder recorder; NAudioReader aggregator; ObservableCollection<string> recordList; WaveOut waveOutDevice; int recordTime; string currentState; string outputFolder; object lockList = new object(); public event PropertyChangedEventHandler PropertyChanged; private void OnPropertyChanged(string name) { if (PropertyChanged != null) { this.PropertyChanged(this, new PropertyChangedEventArgs(name)); } } /// <summary> /// 录音时长 /// </summary> public int RecordTime { get { return recordTime; } set { recordTime = value; this.OnPropertyChanged("RecordTime"); } } /// <summary> /// 录音文件列表 /// </summary> public ObservableCollection<string> RecordList { get { return recordList; } set { recordList = value; this.OnPropertyChanged("RecoredList"); } } /// <summary> /// 界面正在执行任务状态 /// </summary> public string CurrentState { get { return currentState; } set { currentState = value; this.OnPropertyChanged("CurrentState"); } } public MainWindow() { InitializeComponent(); this.DataContext = this; this.Closed = MainWindow_Closed; waveOutDevice = new WaveOut(); RecordList = new ObservableCollection<string>(); recorder = new NAudioRecorder(); outputFolder = System.Windows.Forms.Application.StartupPath; Directory.CreateDirectory(outputFolder); analysis.IsEnabled = false; endRecord.IsEnabled = false; } private void Recorder_MicrophoneVoiceReceived(object sender, MaxSampleEventArgs f) { polylineWaveFormControl.AddValue(f.MaxSample); } /// <summary> /// 退出程序时触发，释放相关资源 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void MainWindow_Closed(object sender, EventArgs e) { if (waveOutDevice != null) { waveOutDevice.PlaybackStopped -= WaveOutDevice_PlaybackStopped; waveOutDevice.Dispose(); } if (recorder != null) { recorder.StopRec(); } if (aggregator != null) { aggregator.Stop(); } } /// <summary> /// 开始录音 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void StartRecord_Click(object sender, RoutedEventArgs e) { CurrentState = "开始录音"; var currentFileName = String.Format("NAudioDemo {0:yyy-MM-dd HH-mm-ss}.wav", DateTime.Now); var path = Path.Combine(outputFolder, currentFileName); recorder.DataAvailable = Recorder_DataAvailable; recorder.MaximumCalculated = Recorder_MicrophoneVoiceReceived; recorder.SetFileName(path); recorder.StartRec(); lock (lockList) { RecordList.Add(path); } endRecord.IsEnabled = true; startRecord.IsEnabled = false; } /// <summary> /// 停止录音 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void EndRecord_Click(object sender, RoutedEventArgs e) { CurrentState = "结束录音"; recorder.StopRec(); analysis.IsEnabled = true; startRecord.IsEnabled = true; endRecord.IsEnabled = false; } /// <summary> /// 分析本地音频文件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void AnalysisRecord_Click(object sender, RoutedEventArgs e) { CurrentState = "正在播放录音"; var inputStream = new AudioFileReader(recordList[0]); aggregator = new NAudioReader(inputStream); aggregator.MaximumCalculated = Aggregator_MaximumCalculated; aggregator.Start(); waveOutDevice.Init(aggregator); waveOutDevice.Volume = 0; waveOutDevice.PlaybackStopped = WaveOutDevice_PlaybackStopped; waveOutDevice.Play(); } private void Aggregator_MaximumCalculated(object sender, MaxSampleEventArgs e) { polylineWaveFormControl.AddValue(e.MaxSample); } /// <summary> /// 进度条管理 /// </summary> /// <param name="value"></param> private void Recorder_DataAvailable(int value) { this.RecordTime = value * 2; if (value == 50) { recorder.DataAvailable -= Recorder_DataAvailable; recorder.MaximumCalculated -= Recorder_MicrophoneVoiceReceived; recorder.StopRec(); recorder = new NAudioRecorder(); StartRecord_Click(this, new RoutedEventArgs()); } } /// <summary> /// 音频文件播放结束触发事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void WaveOutDevice_PlaybackStopped(object sender, StoppedEventArgs e) { waveOutDevice.PlaybackStopped -= WaveOutDevice_PlaybackStopped; RecordList.RemoveAt(0); if (recordList.Count > 0) { AnalysisRecord_Click(null, null); } else { CurrentState = "分析录音完成"; aggregator.Stop(); } } }} |
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