protected HRESULT GetSwapChainPresentParameters(IMFMediaType pType, out PresentParameters pPP)
{
pPP = null;
HRESULT hr;
int width = 0, height = 0;
UInt32 d3dFormat = 0;
Guid _subtype;
hr = (HRESULT)pType.GetGUID(MFAttributesClsid.MF_MT_SUBTYPE, out _subtype);
hr.Assert();
if (hr.Succeeded)
{
hr = MFHelper.MFGetAttribute2UINT32asUINT64(pType, MFAttributesClsid.MF_MT_FRAME_SIZE, out width, out height);
hr.Assert();
if (hr.Succeeded)
{
FOURCC _fourcc = new FOURCC(_subtype);
d3dFormat = _fourcc;
pPP = new PresentParameters();
pPP.BackBufferWidth = width;
pPP.BackBufferHeight = height;
pPP.Windowed = true;
pPP.SwapEffect = SwapEffect.Copy;
pPP.BackBufferFormat = (Format)d3dFormat;
pPP.DeviceWindowHandle = m_VideoControl != null ? m_VideoControl.Handle : m_Device.CreationParameters.Window;
pPP.PresentFlags = PresentFlags.Video;
pPP.PresentationInterval = PresentInterval.Default;
if (m_Device.CreationParameters.DeviceType != DeviceType.Hardware)
{
pPP.PresentFlags = pPP.PresentFlags | PresentFlags.LockableBackBuffer;
}
}
}
return hr;
}
public ScriptNativeFunctionAttribute(char a, char b, char c, char d)
: this(FOURCC.Make(a, b, c, d))
{
}