c#基于udp实现的p2p语音聊天工具

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我是靠谱客的博主炙热糖豆，最近开发中收集的这篇文章主要介绍c#基于udp实现的p2p语音聊天工具，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

原创性申明

此博文的出处为 http://www.uoften.com/如果进行转载请注明出处。本文作者原创，邮箱zhujunxxxxx@163.com，如有问题请联系作者

概述

之前发过一篇文章http://www.uoften.com/ 已经实现过了UDP的分包发送数据的功能，而这篇文章主要是一个应用，使用udp传送语音和文本等信息。在这个系统中没有服务端和客户端，相互通讯都是直接相互联系的。能够很好的实现效果。

语音获取

要想发送语音信息，首先得获取语音，这里有几种方法，一种是使用DirectX的DirectXsound来录音，我为了简便使用一个开源的插件NAudio来实现语音录取。在项目中引用NAudio.dll

//------------------录音相关-----------------------------
        private IWaveIn waveIn;
        private WaveFileWriter writer;


        private void LoadWasapiDevicesCombo()
        {
            var deviceEnum = new MMDeviceEnumerator();
            var devices = deviceEnum.EnumerateAudioEndPoints(DataFlow.Capture, DeviceState.Active).ToList();
            comboBox1.DataSource = devices;
            comboBox1.DisplayMember = "FriendlyName";
        }
        private void CreateWaveInDevice()
        {

            waveIn = new WaveIn();
            waveIn.WaveFormat = new WaveFormat(8000, 1);
            waveIn.DataAvailable += OnDataAvailable;
            waveIn.RecordingStopped += OnRecordingStopped;
        }
        void OnDataAvailable(object sender, WaveInEventArgs e)
        {
            if (this.InvokeRequired)
            {
                this.BeginInvoke(new EventHandler<WaveInEventArgs>(OnDataAvailable), sender, e);
            }
            else
            {
                writer.Write(e.Buffer, 0, e.BytesRecorded);
                int secondsRecorded = (int)(writer.Length / writer.WaveFormat.AverageBytesPerSecond);
                if (secondsRecorded >= 10)//最大10s
                {
                    StopRecord();
                }
                else
                {
                    l_sound.Text = secondsRecorded + " s";
                }
            }
        }
        void OnRecordingStopped(object sender, StoppedEventArgs e)
        {
            if (InvokeRequired)
            {
                BeginInvoke(new EventHandler<StoppedEventArgs>(OnRecordingStopped), sender, e);
            }
            else
            {
                FinalizeWaveFile();
            }
        }
        void StopRecord()
        {
            AllChangeBtn(btn_luyin, true);
            AllChangeBtn(btn_stop, false);
            AllChangeBtn(btn_sendsound, true);
            AllChangeBtn(btn_play, true);


            //btn_luyin.Enabled = true;
            //btn_stop.Enabled = false;
            //btn_sendsound.Enabled = true;
            //btn_play.Enabled = true;
            if (waveIn != null)
                waveIn.StopRecording();
            //Cleanup();
        }
		private void Cleanup()
        {
            if (waveIn != null)
            {
                waveIn.Dispose();
                waveIn = null;
            }
            FinalizeWaveFile();
        }
        private void FinalizeWaveFile()
        {
            if (writer != null)
            {
                writer.Dispose();
                writer = null;
            }
        }
		 //开始录音
        private void btn_luyin_Click(object sender, EventArgs e)
        {
            btn_stop.Enabled = true;
            btn_luyin.Enabled = false;
            if (waveIn == null)
            {
                CreateWaveInDevice();
            }
            if (File.Exists(soundfile))
            {
                File.Delete(soundfile);
            }

            writer = new WaveFileWriter(soundfile, waveIn.WaveFormat);
            waveIn.StartRecording();
        }
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上面的代码实现了录音，并且写入文件p2psound_A.wav