用于多个输入引脚的CreatePosPassThru [英] CreatePosPassThru for multiple input pins

问题描述

对于多个输入引脚，我应该使用什么代替CreatePosPassThru ?

 STDMETHODIMP CTransformerOutputPin :: NonDelegatingQueryInterface(REFIID riid， void  ** ppv)
{
    CheckPointer(ppv，E_POINTER);
    ValidateReadWritePtr(ppv， sizeof (PVOID));
    * ppv = NULL;
    如果(riid == IID_IMediaPosition || riid == IID_IMediaSeeking){
        // 我们现在应该有一个输入图钉
        如果(m_pPosition == NULL){
            HRESULT hr = CreatePosPassThru(
                             GetOwner()，
                             错误的，
                             (IPin *)m_pAudioTransformerFilter-> m_Arrinputpin [ 0 ]，
                             & m_pPosition);
            如果(FAILED(hr)){
                返回小时；
            }
        }
        返回 m_pPosition-> QueryInterface(riid，ppv);
    } 其他 {
        返回 CBaseOutputPin :: NonDelegatingQueryInterface(riid，ppv);
    }
} 

CreatePosPassThru:创建一个支持IMediaSeeking和IMediaPosition的COM对象，用于单输入pin渲染器和变换过滤器.

 STDAPI CreatePosPassThru(
LPUNKNOWN pAgg，
BOOL bRenderer，
IPin * pPin，
IUnknown ** ppPassThru); 

当我只有一个输入引脚时，一切都很好.
我有带多个输入的变压器滤波器.

(更新)
这是实际的. 我只是调用所有引脚的所有功能，而不是IPin *，而是使用IPin **和pins_size.

现在我要测试一下.
在我看来，它可行.

What should I use instead of CreatePosPassThru for multiple input pins?

STDMETHODIMP CTransformerOutputPin::NonDelegatingQueryInterface(REFIID riid, void **ppv)
{
    CheckPointer(ppv,E_POINTER);
    ValidateReadWritePtr(ppv,sizeof(PVOID));
    *ppv = NULL;
    if (riid == IID_IMediaPosition || riid == IID_IMediaSeeking) {
        // we should have an input pin by now
        if (m_pPosition == NULL) {
            HRESULT hr = CreatePosPassThru(
                             GetOwner(),
                             FALSE,
                             (IPin *)m_pAudioTransformerFilter->m_Arrinputpin[0],
                             &m_pPosition);
            if (FAILED(hr)) {
                return hr;
            }
        }
        return m_pPosition->QueryInterface(riid, ppv);
    } else {
        return CBaseOutputPin::NonDelegatingQueryInterface(riid, ppv);
    }
}

CreatePosPassThru: Creates a COM object that supports IMediaSeeking and IMediaPosition for single-input pin renderers and transform filters.

STDAPI CreatePosPassThru(
LPUNKNOWN pAgg,
BOOL bRenderer,
IPin *pPin,
IUnknown **ppPassThru);

When I had one input pin, everything was fine.
I have transformer filter with multiple inputs.

(Update)
It is actual.

解决方案

I have upgraded CreatePosPassThru, CSeekingPassThru and got CreatePosPassThruMultiple, CSeekingPassThruMultiple.
I just call all the functions for all pins and instead of IPin * use IPin ** and pins_size.

Now i am going to test this.
It seems to me, that it works.

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