NOPINS.CPP

//==========================================================================; 
// 
//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR 
//  PURPOSE. 
// 
//  Copyright (c) 1992 - 1997  Microsoft Corporation.  All Rights Reserved. 
// 
//--------------------------------------------------------------------------; 
 
#include <streams.h> 
#include <initguid.h> 
#include "nopins.h" 
 
// setup data 
 
const AMOVIESETUP_FILTER sudNopins = { &CLSID_NoPins       // clsID 
                                     , L"NoPins filter"    // strName 
                                     , MERIT_DO_NOT_USE    // dwMerit 
                                     , 0                   // nPins 
                                     , NULL };             // lpPin 
 
CFactoryTemplate g_Templates[]= { L"NoPins filter" 
                                , &CLSID_NoPins 
                                , CNoPins::CreateInstance 
                                , NULL 
                                , &sudNopins }; 
int g_cTemplates = 1; 
 
/* 
 * Null Filter - A filter that does nothing and has no pins !!! 
 */ 
 
CNoPins::CNoPins(LPUNKNOWN pUnk, HRESULT *phr) : 
    CBaseFilter(NAME("NoPins"), pUnk, &m_Lock, CLSID_NoPins), 
    m_bComplete(FALSE) 
{ 
} 
 
/* 
   CreateInstance 
*/ 
CUnknown * WINAPI CNoPins::CreateInstance(LPUNKNOWN punk, HRESULT *phr) 
{ 
    CNoPins *pNewObject = new CNoPins(punk, phr); 
    if (pNewObject == NULL) { 
        *phr = E_OUTOFMEMORY; 
    } 
 
    return pNewObject; 
} 
 
/*  Pin enumeration */ 
int CNoPins::GetPinCount() 
{ 
    return 0; 
} 
 
CBasePin *CNoPins::GetPin(int i) 
{ 
    UNREFERENCED_PARAMETER(i); 
    return NULL; 
} 
 
STDMETHODIMP CNoPins::Run(REFERENCE_TIME tStart) 
{ 
#if 0 // No need for this if we don't support IMediaPosition 
    CAutoLock lck(&m_Lock); 
    if (!m_bComplete) { 
        NotifyEvent(EC_COMPLETE, 0, 0); 
        m_bComplete = TRUE; 
    } 
#endif 
    return CBaseFilter::Run(tStart); 
} 
 
STDMETHODIMP CNoPins::Stop() 
{ 
    CAutoLock lck(&m_Lock); 
    m_bComplete = FALSE; 
    return CBaseFilter::Stop(); 
} 
 
/******************************Public*Routine******************************\ 
* exported entry points for registration and 
* unregistration (in this case they only call 
* through to default implmentations). 
* 
* 
* 
* History: 
* 
\**************************************************************************/ 
STDAPI 
DllRegisterServer() 
{ 
  return AMovieDllRegisterServer2( TRUE ); 
} 
 
STDAPI 
DllUnregisterServer() 
{ 
  return AMovieDllRegisterServer2( FALSE ); 
}