Direct Show : "Mp3 Decoder DMO" filter fails to return any input pins

sdancer75

Hi, The code below fails to get any input pins for the filter "Mp3 Decoder DMO". The class ID for the specific filter is {94297043-BD82-4DFD-B0DE-8177739C6D20} . Specifically, it fails at the very first while condition. I get S_FALSE which means "Did not retrieve as many pins as requested." Does it play any role that this specific filter is DMO (Direct Media Object) filter ? If this is the case, is there nay other way to get the input pins ? In my graphedit it connects and works just fine , but under my code it fails. Any recommendations ?

IPin* Graph::GetPin(IBaseFilter *pFilter, PIN_DIRECTION PinDir, UCHAR PinCounter) {
BOOL bFound = FALSE;
IEnumPins *pEnum;
IPin *pPin;
HRESULT hr =S_OK;
UCHAR localPinCounter = 0;

hr = pFilter->EnumPins(&pEnum);
if (SUCCEEDED(hr)) {

		while(pEnum->Next(1, &pPin, 0) == S\_OK) {
			PIN\_DIRECTION PinDirThis;
			pPin->QueryDirection(&PinDirThis);
			if (bFound = ( (PinDir == PinDirThis) && (PinCounter == localPinCounter) ) )
				break;
			pPin->Release();
			localPinCounter++;
		}

		
		pEnum->Release();

} else {
	
	return 0;
}

Regards,

sdancer75