TransformFilter_Create
HRESULT TransformFilter_Create	(	TransformFilterImpl *	,
		const CLSID *	,
		const TransformFuncsTable *	pFuncsTable,
		CHANGEPROC	stop,
		CHANGEPROC	current,
		CHANGEPROC	rate
	)
Definition at line 149 of file transform.c.
Referenced by ACMWrapper_create(), and AVIDec_create().
{
    HRESULT hr;
    PIN_INFO piInput;
    PIN_INFO piOutput;

    /* pTransformFilter is already allocated */
    pTransformFilter->clsid = *pClsid;
    pTransformFilter->pFuncsTable = pFuncsTable;

    pTransformFilter->lpVtbl = &TransformFilter_Vtbl;

    pTransformFilter->refCount = 1;
    InitializeCriticalSection(&pTransformFilter->csFilter);
    pTransformFilter->csFilter.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": TransformFilterImpl.csFilter");
    pTransformFilter->state = State_Stopped;
    pTransformFilter->pClock = NULL;
    ZeroMemory(&pTransformFilter->filterInfo, sizeof(FILTER_INFO));
    ZeroMemory(&pTransformFilter->pmt, sizeof(pTransformFilter->pmt));
    pTransformFilter->npins = 2;

    pTransformFilter->ppPins = CoTaskMemAlloc(2 * sizeof(IPin *));

    /* construct input pin */
    piInput.dir = PINDIR_INPUT;
    piInput.pFilter = (IBaseFilter *)pTransformFilter;
    lstrcpynW(piInput.achName, wcsInputPinName, sizeof(piInput.achName) / sizeof(piInput.achName[0]));
    piOutput.dir = PINDIR_OUTPUT;
    piOutput.pFilter = (IBaseFilter *)pTransformFilter;
    lstrcpynW(piOutput.achName, wcsOutputPinName, sizeof(piOutput.achName) / sizeof(piOutput.achName[0]));

    hr = InputPin_Construct(&TransformFilter_InputPin_Vtbl, &piInput, (SAMPLEPROC_PUSH)pFuncsTable->pfnProcessSampleData, NULL, TransformFilter_Input_QueryAccept, NULL, &pTransformFilter->csFilter, NULL, &pTransformFilter->ppPins[0]);

    if (SUCCEEDED(hr))
    {
        ALLOCATOR_PROPERTIES props;
        props.cbAlign = 1;
        props.cbPrefix = 0;
        props.cbBuffer = 0; /* Will be updated at connection time */
        props.cBuffers = 1;

       ((InputPin *)pTransformFilter->ppPins[0])->pin.pUserData = pTransformFilter->ppPins[0];

        hr = OutputPin_Construct(&TransformFilter_OutputPin_Vtbl, sizeof(OutputPin), &piOutput, &props, pTransformFilter, TransformFilter_Output_QueryAccept, &pTransformFilter->csFilter, &pTransformFilter->ppPins[1]);

        if (FAILED(hr))
            ERR("Cannot create output pin (%x)\n", hr);
        else
        {
            if (!stop)
                stop = TransformFilter_ChangeStop;
            if (!current)
                current = TransformFilter_ChangeCurrent;
            if (!rate)
                rate = TransformFilter_ChangeRate;

            MediaSeekingImpl_Init((IBaseFilter*)pTransformFilter, stop, current, rate, &pTransformFilter->mediaSeeking, &pTransformFilter->csFilter);
            pTransformFilter->mediaSeeking.lpVtbl = &TransformFilter_Seeking_Vtbl;
        }
    }
    else
    {
        CoTaskMemFree(pTransformFilter->ppPins);
        pTransformFilter->csFilter.DebugInfo->Spare[0] = 0;
        DeleteCriticalSection(&pTransformFilter->csFilter);
        CoTaskMemFree(pTransformFilter);
    }

    return hr;
}
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