using System;
using System.Configuration;
public class PublicMethod:System.Web.UI.Page
{
    public PublicMethod()
    {
    }
    //文件路徑
    public static string ffmpegtool = "ffmpeg/ffmpeg.exe";        
    public static string mencodertool = "mencoder/mencoder.exe";
    public static string flvtool = "flvtool/flvtool2.exe";//flv標(biāo)記工具
    public static string upFile = "UpFiles" + "/";//上傳文件夾
    public static string imgFile = "ImgFile" + "/";//圖片文件夾
    public static string playFile = "PlayFiles" + "/";//flv文件夾
    public static string xmlFile = "xmlFiles" + "/";//xml文件夾
    public static string sizeOfImg = "240x180";//圖片的寬與高
    public static string widthOfFile = "400";//flv文件的寬度
    public static string heightOfFile = "350";//flv文件的高度
    //public static string ffmpegtool = ConfigurationManager.AppSettings["ffmpeg"];
    //public static string mencodertool = ConfigurationManager.AppSettings["mencoder"];
    //public static string upFile = ConfigurationManager.AppSettings["upfile"] + "/";
    //public static string imgFile = ConfigurationManager.AppSettings["imgfile"] + "/";
    //public static string playFile = ConfigurationManager.AppSettings["playfile"] + "/";
    //文件圖片大小
    //public static string sizeOfImg = ConfigurationManager.AppSettings["CatchFlvImgSize"];
    //文件大小
    //public static string widthOfFile = ConfigurationManager.AppSettings["widthSize"];
    //public static string heightOfFile = ConfigurationManager.AppSettings["heightSize"];
    //   // //獲取文件的名字
    private System.Timers.Timer myTimer = new System.Timers.Timer(3000);//記時(shí)器
    public static string flvName = "";
    public static string imgName = "";
    public static string flvXml = "";
    public static int pId = 0;
    public static string GetFileName(string fileName)
    {
        int i = fileName.LastIndexOf("\") + 1;
        string Name = fileName.Substring(i);
        return Name;
    }
    //獲取文件擴(kuò)展名
    public static string GetExtension(string fileName)
    {
        int i = fileName.LastIndexOf(".")+1;
        string Name = fileName.Substring(i);
        return Name;
    }
    //
    #region //運(yùn)行FFMpeg的視頻解碼，(這里是絕對(duì)路徑)
    /// <summary>
    /// 轉(zhuǎn)換文件并保存在指定文件夾下面(這里是絕對(duì)路徑)
    /// </summary>
    /// <param name="fileName">上傳視頻文件的路徑（原文件）</param>
    /// <param name="playFile">轉(zhuǎn)換后的文件的路徑（網(wǎng)絡(luò)播放文件）</param>
    /// <param name="imgFile">從視頻文件中抓取的圖片路徑</param>
    /// <returns>成功:返回圖片虛擬地址;   失敗:返回空字符串</returns>
    public void ChangeFilePhy(string fileName, string playFile, string imgFile)
    {
        //取得ffmpeg.exe的路徑,路徑配置在Web.Config中,如:<add   key="ffmpeg"   value="E:aspx1ffmpeg.exe"   /> 
        string ffmpeg = Server.MapPath(PublicMethod.ffmpegtool);
        if ((!System.IO.File.Exists(ffmpeg)) || (!System.IO.File.Exists(fileName)))
        {
            return;
        }
        //獲得圖片和(.flv)文件相對(duì)路徑/最后存儲(chǔ)到數(shù)據(jù)庫(kù)的路徑,如:/Web/User1/00001.jpg 
        string flv_file = System.IO.Path.ChangeExtension(playFile, ".flv");
        //截圖的尺寸大小,配置在Web.Config中,如:<add   key="CatchFlvImgSize"   value="240x180"   /> 
        string FlvImgSize = PublicMethod.sizeOfImg;
        System.Diagnostics.ProcessStartInfo FilestartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
        FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
        FilestartInfo.Arguments = " -i " + fileName + " -ab 56 -ar 22050 -b 500 -r 15 -s " + widthOfFile + "x" + heightOfFile + " " + flv_file;
        //ImgstartInfo.Arguments = "   -i   " + fileName + "   -y   -f   image2   -t   0.05   -s   " + FlvImgSize + "   " + flv_img;
        try
        {
            //轉(zhuǎn)換
            System.Diagnostics.Process.Start(FilestartInfo);
            //截圖
            CatchImg(fileName, imgFile);
            //System.Diagnostics.Process.Start(ImgstartInfo);
        }
        catch
        {
        }
    }
    #endregion
    #region 截圖
    public string CatchImg(string fileName,string imgFile)
    {
        //
        string ffmpeg = Server.MapPath(PublicMethod.ffmpegtool);
        //
        string flv_img =imgFile+".jpg";
        //
        string FlvImgSize = PublicMethod.sizeOfImg;
        //
        System.Diagnostics.ProcessStartInfo ImgstartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
        ImgstartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
        //
        ImgstartInfo.Arguments = "   -i   " + fileName + "  -y  -f  image2   -ss 2 -vframes 1  -s   " + FlvImgSize + "   " + flv_img;
        try
        {
            System.Diagnostics.Process.Start(ImgstartInfo);
        }
        catch
        {
            return "";
        }
        //
        catchFlvTool(fileName);
        if (System.IO.File.Exists(flv_img))
        {
            return flv_img;
        }
        return "";
    }
    #endregion
    #region //運(yùn)行FFMpeg的視頻解碼，(這里是(虛擬)相對(duì)路徑)
    /// <summary>
    /// 轉(zhuǎn)換文件并保存在指定文件夾下面(這里是相對(duì)路徑)
    /// </summary>
    /// <param name="fileName">上傳視頻文件的路徑（原文件）</param>
    /// <param name="playFile">轉(zhuǎn)換后的文件的路徑（網(wǎng)絡(luò)播放文件）</param>
    /// <param name="imgFile">從視頻文件中抓取的圖片路徑</param>
    /// <returns>成功:返回圖片虛擬地址;   失敗:返回空字符串</returns>
    public void ChangeFileVir(string fileName, string playFile, string imgFile)
    {
        //取得ffmpeg.exe的路徑,路徑配置在Web.Config中,如:<add   key="ffmpeg"   value="E:\aspx1\ffmpeg.exe"   /> 
        string ffmpeg = Server.MapPath(PublicMethod.ffmpegtool);
        if ((!System.IO.File.Exists(ffmpeg)) || (!System.IO.File.Exists(fileName)))
        {
            return;
        }
        //獲得圖片和(.flv)文件相對(duì)路徑/最后存儲(chǔ)到數(shù)據(jù)庫(kù)的路徑,如:/Web/User1/00001.jpg 
        string flv_img = System.IO.Path.ChangeExtension(Server.MapPath(imgFile), ".jpg");
        string flv_file = System.IO.Path.ChangeExtension(Server.MapPath(playFile), ".flv");
        //截圖的尺寸大小,配置在Web.Config中,如:<add   key="CatchFlvImgSize"   value="240x180"   /> 
        string FlvImgSize = PublicMethod.sizeOfImg;
        System.Diagnostics.ProcessStartInfo FilestartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
        FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
        //此處組合成ffmpeg.exe文件需要的參數(shù)即可,此處命令在ffmpeg   0.4.9調(diào)試通過(guò)
        //ffmpeg -i F:\01.wmv -ab 56 -ar 22050 -b 500 -r 15 -s 320x240 f:\test.flv
        FilestartInfo.Arguments = " -i " + fileName + " -ab 56 -ar 22050 -b 500 -r 15 -s " + widthOfFile + "x" + heightOfFile + " " + flv_file;
        try
        {
            System.Diagnostics.Process ps = new System.Diagnostics.Process();
            ps.StartInfo = FilestartInfo;
            ps.Start();
            Session.Add("ProcessID", ps.Id);
            Session.Add("flv", flv_file);
            Session.Add("img", imgFile);
            myTimer.Elapsed += new System.Timers.ElapsedEventHandler(myTimer_Test);
            myTimer.Enabled = true;
        }
        catch
        {
        }
    }
    #endregion
    #region //運(yùn)行mencoder的視頻解碼器轉(zhuǎn)換(這里是(絕對(duì)路徑))
    public void MChangeFilePhy(string vFileName, string playFile, string imgFile)
    {
        string tool = Server.MapPath(PublicMethod.mencodertool);
        //string mplaytool = Server.MapPath(PublicMethod.ffmpegtool);
        if ((!System.IO.File.Exists(tool)) || (!System.IO.File.Exists(vFileName)))
        {
            return;
        }
        string flv_file = System.IO.Path.ChangeExtension(playFile, ".flv");
        //截圖的尺寸大小,配置在Web.Config中,如:<add   key="CatchFlvImgSize"   value="240x180"   /> 
        string FlvImgSize = PublicMethod.sizeOfImg;
        System.Diagnostics.ProcessStartInfo FilestartInfo = new System.Diagnostics.ProcessStartInfo(tool);
        FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
        FilestartInfo.Arguments = " " + vFileName + " -o " + flv_file + " -of lavf -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=200:mbd=2:mv0:trell:v4mv:cbp:last_pred=1:dia=-1:cmp=0:vb_strategy=1 -vf scale=" + widthOfFile + ":" +heightOfFile + " -ofps 12 -srate 22050";
        try
        {
            System.Diagnostics.Process ps = new System.Diagnostics.Process();
            ps.StartInfo = FilestartInfo;
            ps.Start();
            Session.Add("ProcessID", ps.Id);
            Session.Add("flv", flv_file);
            Session.Add("img", imgFile);
            //pId = ps.Id;
            //flvName = flv_file;
            //imgName = imgFile;
            myTimer.Elapsed += new System.Timers.ElapsedEventHandler(myTimer_Test);
            myTimer.Enabled = true;
        }
        catch
        {
        }
    }
    /// <summary>
    /// 記時(shí)器功能，自動(dòng)保存截圖
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void myTimer_Test(object sender, System.Timers.ElapsedEventArgs e)
    {
        if (!object.Equals(null, Session["ProcessID"]))
        {
            try
            {
                System.Diagnostics.Process prs = System.Diagnostics.Process.GetProcessById(int.Parse(Session["ProcessID"].ToString()));
                if (prs.HasExited)
                {
                    CatchImg(Session["flv"].ToString(), Session["img"].ToString());
                    catchFlvTool(Session["flv"].ToString());
                    myTimer.Enabled = false;
                    myTimer.Close();
                    myTimer.Dispose();
                    Session.Abandon();
                }
            }
            catch
            {
                CatchImg(Session["flv"].ToString(), Session["img"].ToString());
                catchFlvTool(Session["flv"].ToString());
                myTimer.Enabled = false;
                myTimer.Close();
                myTimer.Dispose();
                Session.Abandon();
            }
        }
    }
    #endregion
    public string catchFlvTool(string fileName)
    {
        //
        string flvtools = Server.MapPath(PublicMethod.flvtool);
        //
        string flv_xml = fileName.Replace(".flv", ".xml").Replace(PublicMethod.upFile.Replace("/", ""), PublicMethod.xmlFile.Replace("/", ""));
        //
        System.Diagnostics.ProcessStartInfo ImgstartInfo = new System.Diagnostics.ProcessStartInfo(flvtools);
        ImgstartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
        //
        ImgstartInfo.Arguments = "   " + fileName + "   -UPx   " + fileName + "  >  " + flv_xml;
        try
        {
            System.Diagnostics.Process.Start(ImgstartInfo);
        }
        catch
        {
            return "";
        }
        //
        if (System.IO.File.Exists(flv_xml))
        {
            return flv_xml;
        }
        return "";
    }
}