int IAsyncReader.RequestAllocator(IMemAllocator pPreferred, AllocatorProperties pProps, out IMemAllocator ppActual)
{
if (pPreferred != null)
{
ppActual = pPreferred;
if (pProps != null)
{
pPreferred.GetProperties(pProps);
}
return(S_OK);
}
ppActual = null;
return(E_FAIL);
}
private void TestProp()
{
int hr;
AllocatorProperties pProps = new AllocatorProperties();
AllocatorProperties pProps2 = new AllocatorProperties();
AllocatorProperties pActual = new AllocatorProperties();
hr = m_ma.GetProperties(pProps);
DsError.ThrowExceptionForHR(hr);
pProps.cbAlign = 1;
pProps.cbBuffer = 1024;
pProps.cbPrefix = 0;
pProps.cBuffers = 24;
hr = m_ma.SetProperties(pProps, pActual);
DsError.ThrowExceptionForHR(hr);
hr = m_ma.GetProperties(pProps2);
DsError.ThrowExceptionForHR(hr);
Debug.Assert(pProps.cbBuffer == pProps2.cbBuffer, "Check Size");
Debug.Assert(pProps.cbBuffer == pActual.cbBuffer, "Check Size");
}
private void ShowAllocatorProperties(object sender, EventArgs e)
{
if (connectingPin != null)
{
IMemInputPin imip = connectingPin.IPin as IMemInputPin;
if (imip != null)
{
IMemAllocator ma = null;
imip.GetAllocator(out ma);
if (ma != null)
{
AllocatorProperties pr = new AllocatorProperties();
ma.GetProperties(pr);
Program.mainform.propform.SetObject(new FieldsToPropertiesProxyTypeDescriptor(pr));
}
}
}
connectingPin = null;
}
int IAsyncReader.RequestAllocator(IMemAllocator pPreferred, AllocatorProperties pProps, out IMemAllocator ppActual)
{
if (pPreferred != null)
{
ppActual = pPreferred;
if (pProps != null)
pPreferred.GetProperties(pProps);
return S_OK;
}
ppActual = null;
return E_FAIL;
}