C++ (Cpp) IMediaSeekingPtr::GetDuration示例

HRESULT OutpinVideo::GetDuration(LONGLONG* p)
{
    Filter::Lock lock;

    HRESULT hr = lock.Seize(m_pFilter);

    if (FAILED(hr))
        return hr;

    if (!bool(m_pPinConnection))
        return VFW_E_NOT_CONNECTED;

    const Inpin& inpin = m_pFilter->m_inpin;
    const GraphUtil::IMediaSeekingPtr pSeek(inpin.m_pPinConnection);

    if (bool(pSeek))
    {
        lock.Release();
        return pSeek->GetDuration(p);
    }

    if (p == 0)
        return E_POINTER;

    return E_FAIL;
}

示例#2

显示文件

文件： vp8decoderoutpin.cpp 项目： roh0sun/webmdshow

HRESULT Outpin::GetDuration(LONGLONG* p) {
  const Inpin& inpin = m_pFilter->m_inpin;
  const GraphUtil::IMediaSeekingPtr pSeek(inpin.m_pPinConnection);

  if (bool(pSeek))
    return pSeek->GetDuration(p);

  if (p == 0)
    return E_POINTER;

  return E_FAIL;
}