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8.0

DirectShow Filter Crashes on QueryInterface sometimes

Asked by CSecurity in C++ Programming Language, DirectX Graphics & Game Programming, Game Programming

Hi

I'm using this code:
http://tmhare.mvps.org/downloads/vcam.zip

If you check the code, you'll see:

HRESULT CVCamStream::QueryInterface(REFIID riid, void **ppv)
{
// Standard OLE stuff
if(riid == _uuidof(IAMStreamConfig))
*ppv = (IAMStreamConfig*)this;
else if(riid == _uuidof(IKsPropertySet))
*ppv = (IKsPropertySet*)this;
else
return CSourceStream::QueryInterface(riid, ppv);

AddRef();
return S_OK;
}

After a lot of trace, I see it works well when I call it from AmCap, Yahoo Messenger, MSN, etc.

Just when I load it in Skype, After 3 times calling QueryInterface and those calls go to this part:
return CSourceStream::QueryInterface(riid, ppv);

After 3-4 times calling that part of code, I get exception and entire Skype.exe crashes...

Any ideas?

Get your answer NOW

20091111-EE-VQP-89 - Hierarchy / EE_QW_3_20080625

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DirectShow Filter Crashes on QueryInterface sometimes

Asked by CSecurity in C++ Programming Language, DirectX Graphics & Game Programming, Game Programming

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