C # Speech-to-peer voice chat tool based on UDP implementation

Declaration of originalityWhat is the source of this blog post? http://blog.csdn.net/zhujunxxxxx/article/details/40124773 assume that the reprint please indicate the source. This article author original, email [email protected]. Please contact the author if you have any questions. Overview

Did you post an article http://blog.csdn.net/zhujunxxxxx/article/details/38864817? The ability to send data over UDP packets has been implemented. This article is primarily an application that uses UDP to transmit information such as voice and text.

There is no server and client in this system. Communication is directly related to each other.

Can be very good to achieve the effect.

Voice Acquisition

You want to send voice messages. First we have to get the voice, here are a few ways, one is to use DirectX sound to record, I use an open source plugin naudio to achieve voice admission.

Referencing NAudio.dll in a project

------------------Recording related-----------------------------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)//maximum 10s {Stoprecord (); } else {L_sound.                Text = secondsrecorded + "s"; }}} void Onrecordingstopped (object sender, Stoppedeventargs e) {if (invokere            quired) {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; }}//Start recording 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 (); } 

The above code implements the recording, and writes the file P2psound_a.wav

Voice Send

We're going to send the voice out after we get the voice.

When we record the sound and click Send, this part of the relevant code is

 Msgtranslator tran = null;            Public Form1 () {InitializeComponent ();            Loadwasapidevicescombo ();//display audio device 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 ("Please enter IP");            Return } if (T_port.                Text = = "") {MessageBox.Show ("Please enter port number");            Return } String IP = t_ip.            Text; int port = Int. Parse (T_port.            Text); String Nick = T_nick.            Text;            String msg = "Voice message";       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, F            Ileaccess.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) {//close resource Fs.                Close (); }            }        }

So we send out the resulting voice file.

reception and playback of voice

In fact, the reception of voice and text messages are not different, just send the voice is sent in binary. Therefore, we should write to a file after receiving the voice, and after the reception is complete. You can play this speech.

The following code is basically to save the received data to a file. This function is the event that is triggered when the message is received in my netframe, in the article mentioned earlier in this article

void Tran_messagereceived (object sender, Messageeventargs e)        {            Msg msg = e.msg;            if (Msg. Type = = consts.message_binary)            {                string m = Msg. Type + "-+" + MSG. UserName + "Send binary message!";                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 + "say:" + MSG. normalmsg;                Addservermessage (m);            }        }

After receiving the voice message, we want to play, and still play with the plugin that was just played

--------Play part----------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 () {Sing            Lereaderobject = 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); }

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The interface for receiving and sending a voice message is shown above

Technical Summary

The main technology used is the recording and playback functions of UDP and Naudio.

When using the UDP transport Class I put it on GitHub. Address in the personal introduction to the left of my blog? Project address? Https://github.com/zhujunxxxxx/ZZNetFrame

Hopefully this article will provide a clue.

Update http://download.csdn.net/detail/zhujunxxxxx/8061125? Very good code, I hope you like it.

C # Speech-to-peer voice chat tool based on UDP implementation