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• Core : Move the logic of adding hidden input from stopeRequest to handle

  26 juin 2017, par Arkni

  Core : Move the logic of adding hidden input from stopeRequest to handle
  The only scripted submits in this plugin are triggered by `stopRequest()`
  
  when the remote method finished validating an element and the form was
  
  submitted
  

• How to handle DHAV (.dav) video streams ?

  16 juin 2022, par Mateus Henrique

  I have a WPF app where I need to handle DHAV (.dav) video stream on runtime from a Digital Video Recorder (DVR). I'm using an SDK that can be found here Dahua SDK search

  


  SDK: General_NetSDK_Eng_Win64_IS_V3.052.0000002.0.R.201103


  


  I need to handle every single frame from the video stream, convert it to a BitmapImage and then displays it in a WPF Image control. Something like : MJPEG Decoder

  


  The problem is that I can't find any documentation on how to handle that data and the samples from the SDK doesn't show that either, instead they are built with WinForms and they only pass the Window Handle of the PictureBox's control to an exported DLL function and 'magically' shows the video stream :

  


  [DllImport(LIBRARYNETSDK)]
public static extern IntPtr CLIENT_RealPlayEx(IntPtr lLoginID, int nChannelID, IntPtr hWnd, EM_RealPlayType rType);


  


  


  OBS : 'hWnd' param is the Window Handle to display the video in.

  


  


  The problem with this approach is that I don't have any control over the video stream.

  


  I have tried many FFMPEG wrappers for .NET but they only parse the data if I first write it to disk and only then I can convert it to some type I can handle.

  


  This is the callback function that is called contantly during the application's runtime with the data I need to handle :

  


      private void RealDataCallback(IntPtr lRealHandle, uint dwDataType, IntPtr pBuffer, uint dwBufSize, IntPtr param, IntPtr dwUser)
    {
        switch (dwDataType)
        {
            case 0: // original data
                break;
            case 1: // frame data
                HandleFrameData(lRealHandle, dwDataType, pBuffer, dwBufSize, param, dwUser);
                break;
            case 2: // yuv data
                break;
            case 3: // pcm audio data
                break;
        }
    }

    private void HandleFrameData(IntPtr lRealHandle, uint dwDataType, IntPtr pBuffer, uint dwBufSize, IntPtr param, IntPtr dwUser)
    {
        // The pBuffer parameter format is DHAV (.dav) 
        byte[] buff = new byte[dwBufSize];
        Marshal.Copy(pBuffer, buff, 0, (int)dwBufSize);

        using (var ms = new MemoryStream(buff))
        {
        }
    }


  


  UPDATE

  


  I'm able to convert the YUV data provided in the callback funcion to RGB but that is not the ideal solution. It would be so much better (and faster) if I can convert the original (.dav) data.

  


  The RealDataCallback, in fact, only returns 1 frame per callback, but I don't know how to convert that frame to Bitmap. Any help would be appreciated.

  


• Revision 2a89983999 : Remove an attempt to handle SEG_LVL_SKIP sub8x8. SEG_LEVEL_SKIP requires the bl

  29 mai 2014, par Alex Converse

  Changed Paths :
   Modify /vp9/encoder/vp9_rdopt.c

  
  
  Remove an attempt to handle SEG_LVL_SKIP sub8x8.

  SEG_LEVEL_SKIP requires the block size to be at least 8x8. Attempting to
  use it on smaller partitions causes the decoder to reject the bitstream.

  Change-Id : Ia7188cdf8ae5ac1df6bd29f3f80dbb0610e1f7b1