STDMETHODIMP
CBasePin::Connect(
IPin * pReceivePin,
const AM_MEDIA_TYPE *pmt // optional media type
)
{
CheckPointer(pReceivePin,E_POINTER);
ValidateReadPtr(pReceivePin,sizeof(IPin));
CComAutoLock cObjectLock(m_pLock);
DisplayPinInfo(pReceivePin);
/* See if we are already connected */
if (m_Connected) {
DbgLog((LOG_TRACE, CONNECT_TRACE_LEVEL, TEXT("Already connected")));
return VFW_E_ALREADY_CONNECTED;
}
/* See if the filter is active */
if (!IsStopped() && !m_bCanReconnectWhenActive) {
return VFW_E_NOT_STOPPED;
}
// Find a mutually agreeable media type -
// Pass in the template media type. If this is partially specified,
// each of the enumerated media types will need to be checked against
// it. If it is non-null and fully specified, we will just try to connect
// with this.
const CMediaType * ptype = (CMediaType*)pmt;
HRESULT hr = AgreeMediaType(pReceivePin, ptype);
if (FAILED(hr)) {
DbgLog((LOG_TRACE, CONNECT_TRACE_LEVEL, TEXT("Failed to agree type")));
// Since the procedure is already returning an error code, there
// is nothing else this function can do to report the error.
EXECUTE_ASSERT( SUCCEEDED( BreakConnect() ) );
return hr;
}
DbgLog((LOG_TRACE, CONNECT_TRACE_LEVEL, TEXT("Connection succeeded")));
return NOERROR;
}
ErrorCode BasePinImpl::Connect(IPin *pReceivePin, MediaType* pmt)
{
ASSERT(pReceivePin != NULL);
if (pReceivePin == NULL) throw -1;//return E_INVALIDARG;
ASSERT(m_connectedTo == NULL);
if (m_connectedTo != NULL) return MEDIA_E_ALREADY_CONNECTED;
if (m_dir != PINDIR_OUTPUT)
return Error;
ErrorCode hr;
hr = AgreeMediaType(pReceivePin, pmt);
return hr;
}
