using System;

using System.Threading;

using System.IO;

using System.Diagnostics;

using System.Security;

public partial class cowala_201512Chritmas_amrtest : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

　　　　if (!IsPostBack)

　　　　{

　　　　　　changedPlay.Visible = false;

　　　　}

    }

    protected void Ffmpeg_Click(object sender, EventArgs e)

    {

        if (AmrFileUp.HasFile)

        {

            string key = AmrFileUp.FileName;

            string savepath = Server.MapPath("~/upload/amr/") + key;

            AmrFileUp.SaveAs(savepath);

            string mp3SavePth = Server.MapPath("~/upload/mp3/") + key.Split('.')[].ToString() + ".mp3";

            if (!string.IsNullOrEmpty(ConvertToMp3(savepath, mp3SavePth)))

            {

                changedPlay.Visible = true;

                changedPlay.Attributes.Add("src", "upload/mp3/" + key.Split('.')[].ToString() + ".mp3");

                Response.Write("<script>alert('转换成功！');</script>");

            }

        }

    }

    public string ConvertToMp3(string pathBefore, string pathLater)

    {

        string c = Server.MapPath("/ffmpeg/") + @"ffmpeg.exe -i " + pathBefore + " " + pathLater;

        string str = RunCmd(c);

        return str;

    }

    /// <summary>

    /// 执行Cmd命令

    /// </summary>

    private string RunCmd(string c)

    {

        try

        {

            ProcessStartInfo info = new ProcessStartInfo("cmd.exe");

            info.RedirectStandardOutput = false;

            info.UseShellExecute = false;

            Process p = Process.Start(info);

            p.StartInfo.UseShellExecute = false;

            p.StartInfo.RedirectStandardInput = true;

            p.StartInfo.RedirectStandardOutput = true;

            p.StartInfo.RedirectStandardError = true;

            p.Start();

            p.StandardInput.WriteLine(c);

            p.StandardInput.AutoFlush = true;

            Thread.Sleep();

            p.StandardInput.WriteLine("exit");

            p.WaitForExit();

            string outStr = p.StandardOutput.ReadToEnd();

            p.Close();

            return outStr;

        }

        catch (Exception ex)

        {

            return "error" + ex.Message;

        }

    }

}