// Formats
protected void CreateOptimalVideoType(IMFMediaType pProposed, out IMFMediaType ppOptimal)
{
try
{
MFRect rcOutput;
MFVideoArea displayArea;
IMFMediaType pOptimalType = null;
// Create the helper object to manipulate the optimal type.
VideoTypeBuilder pmtOptimal = new VideoTypeBuilder();
// Clone the proposed type.
pmtOptimal.CopyFrom(pProposed);
// Modify the new type.
// For purposes of this SDK sample, we assume
// 1) The monitor's pixels are square.
// 2) The presenter always preserves the pixel aspect ratio.
// Set the pixel aspect ratio (PAR) to 1:1 (see assumption #1, above)
pmtOptimal.SetPixelAspectRatio(1, 1);
// Get the output rectangle.
rcOutput = m_pD3DPresentEngine.GetDestinationRect();
if (rcOutput.IsEmpty())
{
// Calculate the output rectangle based on the media type.
CalculateOutputRectangle(pProposed, out rcOutput);
}
// Set the extended color information: Use BT.709
pmtOptimal.SetYUVMatrix(MFVideoTransferMatrix.BT709);
pmtOptimal.SetTransferFunction(MFVideoTransferFunction.Func709);
pmtOptimal.SetVideoPrimaries(MFVideoPrimaries.BT709);
pmtOptimal.SetVideoNominalRange(MFNominalRange.MFNominalRange_16_235);
pmtOptimal.SetVideoLighting(MFVideoLighting.Dim);
// Set the target rect dimensions.
pmtOptimal.SetFrameDimensions(rcOutput.right, rcOutput.bottom);
// Set the geometric aperture, and disable pan/scan.
displayArea = new MFVideoArea(0, 0, rcOutput.right, rcOutput.bottom);
pmtOptimal.SetPanScanEnabled(false);
pmtOptimal.SetGeometricAperture(displayArea);
// Set the pan/scan aperture and the minimum display aperture. We don't care
// about them per se, but the mixer will reject the type if these exceed the
// frame dimentions.
pmtOptimal.SetPanScanAperture(displayArea);
pmtOptimal.SetMinDisplayAperture(displayArea);
// Return the pointer to the caller.
pmtOptimal.GetMediaType(out pOptimalType);
pmtOptimal.Dispose();
ppOptimal = pOptimalType;
}
finally
{
//SafeRelease(pOptimalType);
//SafeRelease(pmtOptimal);
}
}
