c#基于udp实现的p2p语音聊天工具

来源：互联网发布：网络危机公关流程编辑：程序博客网时间：2024/04/28 21:27

原创性申明

此博文的出处为 http://blog.csdn.net/zhujunxxxxx/article/details/40124773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://blog.csdn.net/zhujunxxxxx/article/details/38864817 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();        }

上面的代码实现了录音，并且写入文件p2psound_A.wav

语音发送

获取到语音后我们要把语音发送出去

当我们录好音后点击发送，这部分相关代码是

 MsgTranslator tran = null; public Form1()        {            InitializeComponent();            LoadWasapiDevicesCombo();//显示音频设备            Config cfg = SeiClient.GetDefaultConfig();            cfg.Port = 7777;            UDPThread udp = new UDPThread(cfg);            tran = new MsgTranslator(udp, cfg);            tran.MessageReceived += tran_MessageReceived;            tran.Debuged += new EventHandler<DebugEventArgs>(tran_Debuged);        }private void btn_sendsound_Click(object sender, EventArgs e)        {            if (t_ip.Text == "")            {                MessageBox.Show("请输入ip");                return;            }            if (t_port.Text == "")            {                MessageBox.Show("请输入端口号");                return;            }            string ip = t_ip.Text;            int port = int.Parse(t_port.Text);            string nick = t_nick.Text;            string msg = "语音消息";            IPEndPoint remote = new IPEndPoint(IPAddress.Parse(ip), port);            Msg m = new Msg(remote, "zz", nick, Commands.SendMsg, msg, "Come From A");            m.IsRequireReceive = true;            m.ExtendMessageBytes = FileContent(soundfile);            m.PackageNo = Msg.GetRandomNumber();            m.Type = Consts.MESSAGE_BINARY;            tran.Send(m);        }private byte[] FileContent(string fileName)        {            FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);            try            {                byte[] buffur = new byte[fs.Length];                fs.Read(buffur, 0, (int)fs.Length);                return buffur;            }            catch (Exception ex)            {                return null;            }            finally            {                if (fs != null)                {                    //关闭资源                    fs.Close();                }            }        }

如此一来我们就把产生的语音文件发送出去了

语音的接收与播放

其实语音的接收和文本消息的接收没有什么不同，只不过语音发送的时候是以二进制发送的，因此我们在收到语音后就应该写入到一个文件里面去，接收完成后，播放这段语音就行了。

下面这段代码主要是把收到的数据保存到文件中去，这个函数式我的NetFrame里收到消息时所触发的事件，在文章前面提过的那篇文章里

void tran_MessageReceived(object sender, MessageEventArgs e)        {            Msg msg = e.msg;            if (msg.Type == Consts.MESSAGE_BINARY)            {                string m = msg.Type + "->" + msg.UserName + "发来二进制消息!";                AddServerMessage(m);                if (File.Exists(recive_soundfile))                {                    File.Delete(recive_soundfile);                }                FileStream fs = new FileStream(recive_soundfile, FileMode.Create, FileAccess.Write);                fs.Write(msg.ExtendMessageBytes, 0, msg.ExtendMessageBytes.Length);                fs.Close();                //play_sound(recive_soundfile);                ChangeBtn(true);            }            else            {                string m = msg.Type + "->" + msg.UserName + "说:" + msg.NormalMsg;                AddServerMessage(m);            }        }

收到语音消息后，我们要进行播放，播放时仍然用刚才那个插件播放

//--------播放部分----------        private IWavePlayer wavePlayer;        private WaveStream reader;        public void play_sound(string filename)        {            if (wavePlayer != null)            {                wavePlayer.Dispose();                wavePlayer = null;            }            if (reader != null)            {                reader.Dispose();            }            reader = new MediaFoundationReader(filename, new MediaFoundationReader.MediaFoundationReaderSettings() { SingleReaderObject = true });            if (wavePlayer == null)            {                wavePlayer = new WaveOut();                wavePlayer.PlaybackStopped += WavePlayerOnPlaybackStopped;                wavePlayer.Init(reader);            }            wavePlayer.Play();        }        private void WavePlayerOnPlaybackStopped(object sender, StoppedEventArgs stoppedEventArgs)        {            if (stoppedEventArgs.Exception != null)            {                MessageBox.Show(stoppedEventArgs.Exception.Message);            }            if (wavePlayer != null)            {                wavePlayer.Stop();            }            btn_luyin.Enabled = true;        }private void btn_play_Click(object sender, EventArgs e)        {            btn_luyin.Enabled = false;            play_sound(soundfile);        }

在上面演示了接收和发送一段语音消息的界面

技术总结

主要用到的技术就是UDP和NAudio的录音和播放功能

其中用到的UDP传输类我放在了github上面地址在我的博客左边的个人介绍里有地址项目地址 https://github.com/zhujunxxxxx/ZZNetFrame

希望这篇文章能够提供一个思路。

更新程序下载地址 http://download.csdn.net/detail/zhujunxxxxx/8061125 很好的代码，希望大家喜欢

1 0