HRESULT Outpin::Connect(
IPin* pin,
const AM_MEDIA_TYPE* pmt)
{
if (pin == 0)
return E_POINTER;
GraphUtil::IMemInputPinPtr pInputPin;
HRESULT hr = pin->QueryInterface(&pInputPin);
if (hr != S_OK)
return hr;
Filter::Lock lock;
hr = lock.Seize(m_pFilter);
if (FAILED(hr))
return hr;
if (m_pFilter->m_state != State_Stopped)
return VFW_E_NOT_STOPPED;
if (m_connection)
return VFW_E_ALREADY_CONNECTED;
m_connection_mtv.Clear();
if (pmt)
{
hr = QueryAccept(pmt);
if (hr != S_OK)
return VFW_E_TYPE_NOT_ACCEPTED;
//The media type could me only a partial match,
//so we need to fill it in before attemping
//to use it.
const ULONG n = m_preferred_mtv.Size();
LONG idx = -1;
for (ULONG i = 0; i < n; ++i)
{
const AM_MEDIA_TYPE& mt = m_preferred_mtv[i];
if (pmt->subtype == mt.subtype)
{
idx = i;
break;
}
}
if (idx < 0) //weird
return VFW_E_TYPE_NOT_ACCEPTED;
const AM_MEDIA_TYPE& mt = m_preferred_mtv[idx];
hr = pin->ReceiveConnection(this, &mt);
if (FAILED(hr))
return hr;
//const AM_MEDIA_TYPE& mt = *pmt;
//hr = m_pTrack->SetConnectionMediaType(mt);
//
//if (FAILED(hr))
// return VFW_E_TYPE_NOT_ACCEPTED;
m_connection_mtv.Add(mt);
}
else
{
ULONG i = 0;
const ULONG j = m_preferred_mtv.Size();
while (i < j)
{
const AM_MEDIA_TYPE& mt = m_preferred_mtv[i];
hr = pin->ReceiveConnection(this, &mt);
#if 0
if (SUCCEEDED(hr))
{
hr = m_pTrack->SetConnectionMediaType(mt);
if (SUCCEEDED(hr))
break;
}
#else
if (SUCCEEDED(hr))
break;
#endif
++i;
}
if (i >= j)
return VFW_E_NO_ACCEPTABLE_TYPES;
const AM_MEDIA_TYPE& mt = m_preferred_mtv[i];
m_connection_mtv.Add(mt);
}
hr = m_pTrack->SetConnectionMediaType(m_connection_mtv[0]);
assert(SUCCEEDED(hr));
GraphUtil::IMemAllocatorPtr pAllocator;
hr = pInputPin->GetAllocator(&pAllocator);
if (FAILED(hr))
{
hr = CMediaSample::CreateAllocator(&pAllocator);
if (FAILED(hr))
return VFW_E_NO_ALLOCATOR;
}
assert(bool(pAllocator));
ALLOCATOR_PROPERTIES props, actual;
props.cBuffers = -1; //number of buffers
props.cbBuffer = -1; //size of each buffer, excluding prefix
props.cbAlign = -1; //applies to prefix, too
props.cbPrefix = -1; //imediasample::getbuffer does NOT include prefix
hr = pInputPin->GetAllocatorRequirements(&props);
m_pTrack->UpdateAllocatorProperties(props); //modify props as req'd
hr = pAllocator->SetProperties(&props, &actual);
if (FAILED(hr))
return hr;
hr = pInputPin->NotifyAllocator(pAllocator, 0); //allow writes
if (FAILED(hr) && (hr != E_NOTIMPL))
return hr;
m_pAllocator = pAllocator;
m_connection = pin; //TODO: use com smartptr here
m_connection->AddRef();
m_pInputPin = pInputPin;
return S_OK;
}
HRESULT Outpin::Connect(IPin* pin, const AM_MEDIA_TYPE* pmt) {
if (pin == 0)
return E_POINTER;
GraphUtil::IMemInputPinPtr pInputPin;
HRESULT hr = pin->QueryInterface(&pInputPin);
if (hr != S_OK)
return hr;
Filter::Lock lock;
hr = lock.Seize(m_pFilter);
if (FAILED(hr))
return hr;
if (m_pFilter->GetStateLocked() != State_Stopped)
return VFW_E_NOT_STOPPED;
if (bool(m_pPinConnection))
return VFW_E_ALREADY_CONNECTED;
if (!bool(m_pFilter->m_inpin.m_pPinConnection))
return VFW_E_NO_TYPES; // VFW_E_NOT_CONNECTED?
m_connection_mtv.Clear();
if (pmt) {
hr = QueryAccept(pmt);
if (hr != S_OK)
return VFW_E_TYPE_NOT_ACCEPTED;
if ((pmt->formattype == FORMAT_VideoInfo) ||
(pmt->formattype == FORMAT_VideoInfo2)) {
hr = pin->ReceiveConnection(this, pmt);
if (FAILED(hr))
return hr;
m_connection_mtv.Add(*pmt);
} else { // partial media type
const ULONG n = m_preferred_mtv.Size();
LONG idx = -1;
for (ULONG i = 0; i < n; ++i) {
const AM_MEDIA_TYPE& mt = m_preferred_mtv[i];
if (pmt->subtype == mt.subtype) {
idx = i;
break;
}
}
if (idx < 0) // weird
return VFW_E_TYPE_NOT_ACCEPTED;
const AM_MEDIA_TYPE& mt = m_preferred_mtv[idx];
hr = pin->ReceiveConnection(this, &mt);
if (FAILED(hr))
return hr;
m_connection_mtv.Add(mt);
}
} else {
ULONG i = 0;
const ULONG j = m_preferred_mtv.Size();
while (i < j) {
const AM_MEDIA_TYPE& mt = m_preferred_mtv[i];
hr = pin->ReceiveConnection(this, &mt);
if (SUCCEEDED(hr))
break;
++i;
}
if (i >= j)
return VFW_E_NO_ACCEPTABLE_TYPES;
const AM_MEDIA_TYPE& mt = m_preferred_mtv[i];
m_connection_mtv.Add(mt);
}
GraphUtil::IMemAllocatorPtr pAllocator;
hr = pInputPin->GetAllocator(&pAllocator);
if (FAILED(hr)) {
// hr = CMemAllocator::CreateInstance(&m_sample_factory, &pAllocator);
hr = CMediaSample::CreateAllocator(&pAllocator);
if (FAILED(hr))
return VFW_E_NO_ALLOCATOR;
}
assert(bool(pAllocator));
ALLOCATOR_PROPERTIES props, actual;
props.cBuffers = -1; // number of buffers
props.cbBuffer = -1; // size of each buffer, excluding prefix
props.cbAlign = -1; // applies to prefix, too
props.cbPrefix = -1; // imediasample::getbuffer does NOT include prefix
hr = pInputPin->GetAllocatorRequirements(&props);
if (props.cBuffers <= 0)
props.cBuffers = 1;
LONG w, h;
GetConnectionDimensions(w, h);
const long cbBuffer = 2 * w * h;
if (props.cbBuffer < cbBuffer)
props.cbBuffer = cbBuffer;
if (props.cbAlign <= 0)
props.cbAlign = 1;
if (props.cbPrefix < 0)
props.cbPrefix = 0;
hr = pAllocator->SetProperties(&props, &actual);
if (FAILED(hr))
return hr;
hr = pInputPin->NotifyAllocator(pAllocator, 0); // allow writes
if (FAILED(hr) && (hr != E_NOTIMPL))
return hr;
m_pPinConnection = pin;
m_pAllocator = pAllocator;
m_pInputPin = pInputPin;
return S_OK;
}
HRESULT OutpinVideo::PostConnectStats(IPin* p)
{
IStreamPtr pStream;
HRESULT hr = p->QueryInterface(&pStream);
if (FAILED(hr))
return hr;
const GraphUtil::IMemInputPinPtr pMemInput(p);
if (bool(pMemInput))
{
GraphUtil::IMemAllocatorPtr pAllocator;
hr = pMemInput->GetAllocator(&pAllocator);
if (FAILED(hr))
{
hr = CMediaSample::CreateAllocator(&pAllocator);
if (FAILED(hr))
return VFW_E_NO_ALLOCATOR;
}
assert(bool(pAllocator));
ALLOCATOR_PROPERTIES props;
props.cBuffers = -1; //number of buffers
props.cbBuffer = -1; //size of each buffer, excluding prefix
props.cbAlign = -1; //applies to prefix, too
props.cbPrefix = -1; //imediasample::getbuf does NOT include prefix
hr = pMemInput->GetAllocatorRequirements(&props);
if (props.cBuffers < 0)
props.cBuffers = 0;
if (props.cbBuffer < 0)
props.cbBuffer = 0;
if (props.cbAlign <= 0)
props.cbAlign = 1;
if (props.cbPrefix < 0)
props.cbPrefix = 0;
ALLOCATOR_PROPERTIES actual;
hr = pAllocator->SetProperties(&props, &actual);
if (FAILED(hr))
return hr;
hr = pMemInput->NotifyAllocator(pAllocator, 0); //allow writes
if (FAILED(hr) && (hr != E_NOTIMPL))
return hr;
m_pAllocator = pAllocator;
m_pInputPin = pMemInput;
}
m_pStream = pStream;
return S_OK;
}
