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Oribi
Netherlands
17 Posts |
 Posted - Jan 29 2014 : 06:21:29
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The "Video Processing Project" (http://sourceforge.net/projects/videoprocessing/) contains a Rotate Filter which can be used to rotate images.
When I test this filter using GraphEdt everything works great, however when I add to the filter to the graph created by ImageEn the image appears to be corrupted (it is rotated though).
I currently use the following code to test this:
ImageEn.IO.DShowParams.SetVideoInput(0, 0, w, h, f);
ImageEn.IO.DShowParams.EnableSampleGrabber := true;
ImageEn.IO.DShowParams.Connect;
ImageEn.IO.DShowParams.SaveGraph('y:\graph1.grf');
// Get the Source Output Pin and the input Pin it is connected to
SourceFilter := ImageEn.IO.DShowParams.CurVideoInput;
SrcPinOut := GetPin(SourceFilter, IEPINDIR_OUTPUT);
SrcPinOut.ConnectedTo(DstPinIn);
// Break the existing link
SrcPinOut.Disconnect;
DstPinIn.Disconnect;
// Add the rotate filter
RotateFilter := CreateComObject(CLSID_RotateFilter) as IIEBaseFilter;
ImageEn.IO.DShowParams.Graph.AddFilter(RotateFilter, 'RotateFilter');
// Get the in- and outputpin of the rotate filter
RotateFilterIn := GetPin(RotateFilter, IEPINDIR_INPUT);
RotateFilterOut := GetPin(RotateFilter, IEPINDIR_OUTPUT);
// Place the Rotate Filter between the source
// and the original linked filter
ImageEn.IO.DShowParams.Graph.Connect(SrcPinOut, RotateFilterIn);
ImageEn.IO.DShowParams.Graph.Connect(RotateFilterOut, DstPinIn);
// Rotate 180 degrees
if RotateFilter.QueryInterface(ISettingsInterface, FilterSettings) = S_OK then
FilterSettings.SetParameter('rotationmode', '2');
// Save the new graph (for inspection using GraphEdt)
ImageEn.IO.DShowParams.SaveGraph('y:\graph2.grf');
ImageEn.IO.DShowParams.Run;
Does anyone know what I'm doing wrong?
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90/270 degrees rotation of webcam video (DirectX
