Recherche avancée

Sur d’autres sites (10319)

• Clang C Compiler 'class' keyword reserved ?

  21 septembre 2012, par user1689196

  Hi I am compiling ffmpeg using xcode, which I believe uses clang for compilation. In ffmpeg there is a struct with a member variable named 'class' I believe this is perfectly fine in C but clang is trying to parse it as a keyword. Any idea how to fix ? Basically the following in a cpp file will cause the error :

  extern C {
  
      typedef struct {
  
          int class;
  
      } SomeStruct;
  
  }

  It tries to interpret class as a keyword.

  FYI the file that is throwing the error in ffmpeg is libavcodec/mpegvideo.h and I need to include this to have access to the MpegEncContext struct to pull out motion map info.

  EDIT

  The above code sample was just to demonstrate the error. But perhaps its fixable in another way. In my actual code I have it like this :

  #ifdef __cplusplus
  
  extern "C" {
  
  #endif
  
  
  
      #include "libavcodec/mpegvideo.h"
  
      #include "libavformat/avformat.h"
  
  
  
  #if __cplusplus
  
  } //Extern C
  
  #endif

  How would I get that to include the two files as C files and not C++ ?

  Thanks

• how to pass ffmpeg output to other sub-class in C# ?

  11 septembre 2012, par Lynx

  i want to pass the thumbnail generated by ffmpeg to save_FTPUpload where the save_FTPUpload function is to upload the image file to ftp server. how can i do that ?
  here is my example code for thumbnail generation using ffmpeg and "fileupload" function for uploading files to ftp server :

  public partial class testtttt : System.Web.UI.Page
  
  {
  
      protected void Page_Load(object sender, EventArgs e)
  
      {
  
          generateThumbnail();
  
          string fi_attachment = @"C:\2.jpg";//source image file
  
          save_FTPUpload(fi_attachment);
  
      }
  
  
  
      private void generateThumbnail()
  
      {
  
          string thumbpath, thumbname, videofile;
  
  
  
          videofile = "http://www.xxxx.com/video.Avi";
  
          thumbpath = @"C:\";
  
          thumbname = thumbpath + Path.GetFileNameWithoutExtension(videofile) + ".jpg";
  
  
  
          string thumbargs = "-i \"" + videofile + "\" -vframes 1 -s 60*30 -ss 00:00:00 -f image2 \"" + thumbname + "\"";
  
  
  
          Process process = new Process();
  
  
  
          process.StartInfo.FileName = Server.MapPath("~\\ffmpeg\\bin\\ffmpeg.exe");
  
          process.StartInfo.Arguments = thumbargs;
  
  
  
          process.StartInfo.UseShellExecute = false;
  
          process.StartInfo.RedirectStandardOutput = true;
  
          process.StartInfo.RedirectStandardInput = false;
  
          process.StartInfo.RedirectStandardError = true;
  
          process.StartInfo.CreateNoWindow = false;
  
          process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
  
  
  
          try
  
          {
  
              process.Start();
  
              string output2 = process.StandardError.ReadToEnd();
  
              string output3 = process.StandardOutput.ReadToEnd();
  
  
  
              if (process != null)
  
              {
  
                  process.Close();
  
              }
  
          }
  
  
  
          catch (Exception)
  
          {
  
              this.lblMessage.Text = "Thumbnail created successfuly";//ex.Message.ToString();
  
          }
  
      }
  
  
  
      public bool save_FTPUpload(string fi_attachment)
  
      {
  
          bool fileSaved = false;
  
          //string fi_attachment = @"C:\1.jpg";
  
          string filename = "3.jpg";//image name to be saved in ftp
  
          string ftp_user = "*****"; //username
  
          string ftp_pass = "*****"; //password
  
          string ftpURI = "ftp://www.xxxx.com/thumb/"; //ftp path where the image will be saved
  
  
  
          while (!fileSaved)
  
          {
  
              string file_ftpURI = string.Format("{0}/{1}", ftpURI, filename);
  
              FtpWebRequest file_exist_request = (FtpWebRequest)FtpWebRequest.Create(file_ftpURI);
  
              file_exist_request.Credentials = new NetworkCredential(ftp_user, ftp_pass);
  
              file_exist_request.Method = WebRequestMethods.Ftp.GetFileSize;
  
              try
  
              {
  
                  FtpWebResponse response = (FtpWebResponse)file_exist_request.GetResponse();
  
              }
  
              catch (WebException ex)
  
              {
  
                  FtpWebResponse response = (FtpWebResponse)ex.Response;
  
                  if (response.StatusCode ==
  
                      FtpStatusCode.ActionNotTakenFileUnavailable)
  
                  {
  
                      FtpWebRequest upload_request = (FtpWebRequest)FtpWebRequest.Create(file_ftpURI);
  
                      upload_request.Credentials = new NetworkCredential(ftp_user, ftp_pass);
  
  
  
                      upload_request.Method = WebRequestMethods.Ftp.UploadFile;
  
                      upload_request.UsePassive = true;
  
                      upload_request.UseBinary = true;
  
                      upload_request.KeepAlive = false;
  
  
  
                      using (var fs = File.OpenRead(fi_attachment))
  
                      using (Stream upload_request_stream = upload_request.GetRequestStream())
  
                      {
  
                          fs.CopyTo(upload_request_stream);
  
                      }
  
                      FtpWebResponse upload_response = (FtpWebResponse)upload_request.GetResponse();
  
  
  
                      fileSaved = true;
  
                      this.Label1.Text = "Upload Successful";
  
                  }
  
              }
  
          }
  
          return fileSaved;
  
      }

• Moved request method switch into class initialization code.

  14 octobre 2012, par Sebastian Tschan

  m server/php/index.php m server/php/upload.class.php Moved request method switch into class initialization code. Added option to return response of get, post and delete methods instead of printing it to the output stream. Added option (...)