利用lame.exe实现mp3编码代码,CSharp代码库,德仔网

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【CSharp】利用lame.exe实现mp3编码
作者:dezai / 发布于2014/3/10/ 577
//1.c#调用非c#编写的EXE:Process

 引用空间: System.Diagnostics;

 process.StartInfo.FileName="lame.exe"; //设置要启动的应用程序

 process.StartInfo.Arguments=" -h --abr 128 test.wav testOut.mp3 ";//设置启动应用程序时的命令行参数

//2.正则表达式匹配lame.exe输出的信息

 引用空间:System.Text.RegularExpressions;

 @"(/d+)/(/d+)/D+(/d+)/D+([/d:]+)/D+([/d:]+)/D+([/d:]+)/D+([/d:]+)/D+([/d/.]+)/D+([/d:]+)"

//3.事件、委托、线程



usingSystem;
usingSystem.Collections.Generic;
usingSystem.Text;
usingSystem.Text.RegularExpressions;
usingSystem.Diagnostics;
usingSystem.Threading;
usingSystem.Windows.Forms;
namespaceCSharpShell
{
publicdelegatevoideventDone();
publicdelegatevoideventProgress(LameProgressProgress);
publicdelegatevoideventIgnoredLine(stringLine);
publicdelegatevoideventCanceled();
publicclassShell
{
privateProcess_lameProcess=newProcess();
privateThread_lameThread;
privateint_percentDone;
privatebool_isRunning=false;
privateProcessStartInfo_startInfo=newProcessStartInfo();
privateRegex_regLine=newRegex(@"(/d+)/(/d+)/D+(/d+)/D+([/d:]+)/D+([/d:]+)/D+([/d:]+)/D+([/d:]+)/D+([/d/.]+)/D+([/d:]+)",RegexOptions.IgnoreCase
|RegexOptions.CultureInvariant
|RegexOptions.IgnorePatternWhitespace
|RegexOptions.Compiled);

privatestring_inFile;
privatestring_outFile;
privatestring_options;
publiceventeventDoneDone;
publiceventeventProgressProgress;
publiceventeventIgnoredLineIgnoredLine;
publiceventeventCanceledCanceled;
publicShell()
{
DefStartInfo();
_startInfo.WorkingDirectory=Application.StartupPath;
}
publicShell(stringInFile,stringOutFile,stringLamePath,stringOptions)
{
DefStartInfo();
if(string.IsNullOrEmpty(LamePath))
_startInfo.WorkingDirectory=Application.StartupPath;
_inFile=InFile;
_outFile=OutFile;
_options=Options;
}
privatevoidDefStartInfo()
{
_startInfo.FileName="lame.exe";
_startInfo.UseShellExecute=false;
_startInfo.RedirectStandardOutput=true;
_startInfo.RedirectStandardError=true;
_startInfo.CreateNoWindow=true;
}
publicstringInFile
{
get{return_inFile;}
set{_inFile=value;}
}
publicstringOutFile
{
get{return_outFile;}
set{_outFile=value;}
}
publicstringOptions
{
get{return_options;}
set{_options=value;}
}
publicstringLamePath
{
get{return_startInfo.WorkingDirectory;}
set{_startInfo.WorkingDirectory=value;}
}
privatevoidReset()
{
stringarguments="";
_percentDone=0;
_lameProcess=newProcess();
if(_options!="")
arguments=_options+"";
arguments+="/"/""+_inFile+"/"/"";
if(_outFile!="")
arguments+="/"/""+_outFile+"/"/"";
_startInfo.Arguments=arguments;
_lameProcess.StartInfo=_startInfo;
}
publicboolStart()
{
if(_isRunning||_inFile=="-"||_outFile=="-")
returnfalse;
_isRunning=true;
Reset();
try
{
_lameThread=newThread(newThreadStart(LameReader));
_lameThread.IsBackground=true;
_lameThread.Name="LameReader";
_lameThread.Start();
returntrue;
}
catch(Exceptionex)
{
returnfalse;
}

}
privatevoidLameReader()
{
Matchm;
stringoneLine;
try
{
_lameProcess.Start();
oneLine=_lameProcess.StandardError.ReadLine();
 while(_lameProcess.StandardError.Peek()!=0&&oneLine!=null)
{
m=_regLine.Match(oneLine);
if(m.Success)
{
_percentDone=Convert.ToInt32(m.Groups[3].Value);
if(Progress!=null)
Progress(newLameProgress(m));
}
else
{
if(IgnoredLine!=null)
IgnoredLine(oneLine);
}
 oneLine=_lameProcess.StandardError.ReadLine();
}
_lameProcess.Close();
_lameProcess=null;
if(_percentDone==100)
{
if(Done!=null)
Done();
}
else
{
if(Canceled!=null)
Canceled();
}
}
catch(Exceptionex)
{
if(_lameProcess!=null)
{
_lameProcess.Close();
_lameProcess=null;
}
MessageBox.Show(ex.Message+"/n"+"Areyousurelame.exeishere:"+"/n"+_startInfo.WorkingDirectory);
}
finally
{
_isRunning=false;
}
}
publicvoidCancel()
{
try
{
if(_lameProcess!=null)
{
_lameProcess.Kill();
}
}
catch
{
}
}
}
publicclassLameProgress
{
privateMatch_m;
publicintFrameCurrent
{
get{returnConvert.ToInt32(_m.Groups[1].Value);}
}
publicintFrameMax
{
get{returnConvert.ToInt32(_m.Groups[2].Value);}
}
publicintPercentDone
{
get
{
returnConvert.ToInt32(_m.Groups[3].Value);
}
}
publicstringCPUTime
{
get
{
return_m.Groups[4].Value;
}
}
publicstringCPUEstimate
{
get
{
return_m.Groups[5].Value;
}
}
publicstringREALTime
{
get
{
return_m.Groups[6].Value;
}
}
publicstringREALEstimate
{
get
{
return_m.Groups[7].Value;
}
}
publicSinglePlayCPU
{
get
{
returnConvert.ToSingle(_m.Groups[8].Value);
}
}
publicstringETA
{
get
{
return_m.Groups[9].Value;
}
}
publicLameProgress(Matchm)
{
_m=m;
}
}
}

下面是一个引用Shell的实例：

界面有一个progressbar(pBar),两个button(cmdStart,cmdCancel), 一个label(lblFeedback)

usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;
namespaceCSharpShell
{
publicpartialclassForm1:Form
{
privateShell_lameShell;
publicForm1()
{
InitializeComponent();
}
[STAThread]
staticvoidMain()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(newForm1());
}
privatevoidForm1_Load(objectsender,EventArgse)
{
_lameShell=newShell();
_lameShell.Done+=neweventDone(_lameShell_Done);
_lameShell.Canceled+=neweventCanceled(_lameShell_Canceled);
_lameShell.Progress+=neweventProgress(_lameShell_Progress);

}
privatevoidForm1_FormClosing(objectsender,FormClosingEventArgse)
{
_lameShell.Cancel();

}
privatevoidcmdStart_Click(objectsender,EventArgse)
{
_lameShell.InFile=Application.StartupPath+"//test.wav";
_lameShell.OutFile=Application.StartupPath+"//testOut.mp3";
_lameShell.Options="-h--abr128";
_lameShell.Start();
}
privatevoidcmdCancel_Click(objectsender,EventArgse)
{
_lameShell.Cancel();
}

privatevoid_lameShell_Done()
{
if(this.InvokeRequired)
{
this.Invoke(neweventDone(_lameShell_Done));
}
else
lblFeedback.Text="Done";
}
privatevoid_lameShell_Canceled()
{
if(this.InvokeRequired)
this.Invoke(neweventCanceled(_lameShell_Canceled));
else
{
lblFeedback.Text="Canceled/Error";
pBar.Value=0;
}
}

privatevoid_lameShell_Progress(LameProgressProgress)
{
if(this.InvokeRequired)
{
this.Invoke(neweventProgress(_lameShell_Progress),newobject[]{Progress});
}
else
{
if(pBar.Maximum!=Progress.FrameMax)
{
pBar.Value=0;
pBar.Maximum=Progress.FrameMax;
}
else
{
pBar.Value=Progress.FrameCurrent;
}
lblFeedback.Text=Progress.PercentDone+"%"+"ETA:"+Progress.ETA;
}
}
}
}

//至于mp3 编码,看完上面的文章您肯定也会了,只要匹配正则就可以了. @"/D+(/d+)/(/d+)(/d+)/D+"
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