HRESULT CAnalyzerWriterFilter::GetMediaPositionInterface(REFIID riid, __deref_out void **ppv)
{
CAutoLock cObjectCreationLock(&m_ObjectCreationLock);
if (m_pPosition) {
return m_pPosition->NonDelegatingQueryInterface(riid,ppv);
}
CBasePin *pPin = GetPin(0);
if (NULL == pPin) {
return E_OUTOFMEMORY;
}
HRESULT hr = NOERROR;
// Create implementation of this dynamically since sometimes we may
// never try and do a seek. The helper object implements a position
// control interface (IMediaPosition) which in fact simply takes the
// calls normally from the filter graph and passes them upstream
m_pPosition = new CAnalyzerPosPassThru(NAME("Renderer CPosPassThru"),
CBaseFilter::GetOwner(),
(HRESULT *) &hr,
pPin,
m_analyzer);
if (m_pPosition == NULL) {
return E_OUTOFMEMORY;
}
if (FAILED(hr)) {
delete m_pPosition;
m_pPosition = NULL;
return E_NOINTERFACE;
}
return GetMediaPositionInterface(riid,ppv);
}
CBasePin * DBaseVideoRenderer::GetPin(int n)
{
// copied from __super, and changed only the input pin creation class
CAutoLock cObjectCreationLock(&m_ObjectCreationLock);
// Should only ever be called with zero
ASSERT(n == 0);
if (n != 0) {
return NULL;
}
// Create the input pin if not already done so
if (m_pInputPin == NULL) {
// hr must be initialized to NOERROR because
// CRendererInputPin's constructor only changes
// hr's value if an error occurs.
HRESULT hr = NOERROR;
m_pInputPin = new DRendererInputPin(this,&hr,L"In");
if (NULL == m_pInputPin) {
return NULL;
}
if (FAILED(hr)) {
delete m_pInputPin;
m_pInputPin = NULL;
return NULL;
}
}
return m_pInputPin;
}
CBasePin* CAnalyzerWriterFilter::GetPin(int n)
{
CAutoLock cObjectCreationLock(&m_ObjectCreationLock);
// Should only ever be called with zero
ASSERT(n == 0);
if (n != 0) {
return NULL;
}
// Create the input pin if not already done so
if (m_pInputPin == NULL) {
// hr must be initialized to NOERROR because
// CRendererInputPin's constructor only changes
// hr's value if an error occurs.
HRESULT hr = NOERROR;
m_pInputPin = new CAnalyzerWriterInput(this, &hr, L"In", &m_file, m_szFileName, m_analyzer);
if (NULL == m_pInputPin) {
return NULL;
}
if (FAILED(hr)) {
delete m_pInputPin;
m_pInputPin = NULL;
return NULL;
}
}
return m_pInputPin;
}
HRESULT CMPEGFilter::GetMediaPositionInterface(REFIID riid, void **ppv)
{
CAutoLock cObjectCreationLock(&m_ObjectCreationLock);
if (m_pPosition) {
return m_pPosition->NonDelegatingQueryInterface(riid,ppv);
}
HRESULT hr = NOERROR;
// Create implementation of this dynamically since sometimes we may
// never try and do a seek. The helper object implements a position
// control interface (IMediaPosition) which in fact simply takes the
// calls normally from the filter graph and passes them upstream
/*
m_pPosition = new CRendererPosPassThru(NAME("Renderer CPosPassThru"),
CBaseFilter::GetOwner(),
(HRESULT *) &hr,
GetPin(0));*/
m_pPosition = new CMPEGSeeking(NAME("Renderer CPosPassThru"),
CBaseFilter::GetOwner(),
(HRESULT *) &hr,
GetPin(0),
GetPin(1),
m_pMPEGObj);
if (m_pPosition == NULL) {
return E_OUTOFMEMORY;
}
if (FAILED(hr)) {
delete m_pPosition;
m_pPosition = NULL;
return E_NOINTERFACE;
}
m_pPosition->AddRef();
*ppv = m_pPosition;
return S_OK;
}
