117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
#ifndef __STATICASYNCCALLBACK__
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#define __STATICASYNCCALLBACK__
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////////////////////////////////////////////////////////
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//
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#define STATICASYNCCALLBACK(Callback, Parent) \
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class Callback##AsyncCallback; \
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friend class Callback##AsyncCallback; \
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class Callback##AsyncCallback : public IMFAsyncCallback \
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{ \
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public: \
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STDMETHOD_( ULONG, AddRef )() \
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{ \
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Parent * pThis = ((Parent*)((BYTE*)this - offsetof(Parent, m_x##Callback))); \
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return pThis->AddRef(); \
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} \
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STDMETHOD_( ULONG, Release )() \
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{ \
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Parent * pThis = ((Parent*)((BYTE*)this - offsetof(Parent, m_x##Callback))); \
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return pThis->Release(); \
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} \
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STDMETHOD( QueryInterface )( REFIID riid, __RPC__deref_out _Result_nullonfailure_ void **ppvObject ) \
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{ \
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return E_NOINTERFACE; \
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} \
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STDMETHOD( GetParameters )( \
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__RPC__out DWORD *pdwFlags, \
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__RPC__out DWORD *pdwQueue) \
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{ \
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return S_OK; \
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} \
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STDMETHOD( Invoke )( __RPC__in_opt IMFAsyncResult * pResult ) \
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{ \
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Callback( pResult ); \
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return S_OK; \
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} \
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} m_x##Callback;
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////////////////////////////////////////////////////////
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//
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//
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// We need to support QI interface so that DCOM is happy when it tries to marshal the interface pointer
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//
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#define METHODASYNCCALLBACKEX(Callback, Parent, Flag, Queue) \
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class Callback##AsyncCallback; \
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friend class Callback##AsyncCallback; \
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class Callback##AsyncCallback : public IMFAsyncCallback \
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{ \
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public: \
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STDMETHOD_( ULONG, AddRef )() \
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{ \
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return GetParent()->AddRef(); \
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} \
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STDMETHOD_( ULONG, Release )() \
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{ \
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return GetParent()->Release(); \
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} \
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STDMETHOD( QueryInterface )( REFIID riid, __RPC__deref_out _Result_nullonfailure_ void **ppvObject ) \
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{ \
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if(riid == IID_IMFAsyncCallback || riid == IID_IUnknown) \
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{ \
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(*ppvObject) = this; \
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AddRef(); \
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return S_OK; \
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} \
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(*ppvObject) = NULL; \
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return E_NOINTERFACE; \
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} \
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STDMETHOD( GetParameters )( \
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__RPC__out DWORD *pdwFlags, \
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__RPC__out DWORD *pdwQueue) \
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{ \
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*pdwFlags = Flag; \
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*pdwQueue = Queue; \
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return S_OK; \
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} \
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STDMETHOD( Invoke )( __RPC__in_opt IMFAsyncResult * pResult ) \
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{ \
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GetParent()->Callback( pResult ); \
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return S_OK; \
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} \
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protected: \
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Parent* GetParent() \
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{ \
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return ((Parent*)((BYTE*)this - offsetof(Parent, m_x##Callback))); \
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} \
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} m_x##Callback;
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////////////////////////////////////////////////////////
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//
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#define METHODFASTCALLBACK(Callback, Parent) \
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METHODASYNCCALLBACKEX(Callback, Parent, MFASYNC_FAST_IO_PROCESSING_CALLBACK, MFASYNC_CALLBACK_QUEUE_STANDARD)
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#define METHODASYNCCALLBACK(Callback, Parent) \
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METHODASYNCCALLBACKEX(Callback, Parent, 0, MFASYNC_CALLBACK_QUEUE_STANDARD)
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#define METHODASYNCRTCALLBACK(Callback, Parent) \
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METHODASYNCCALLBACKEX(Callback, Parent, 0, MFASYNC_CALLBACK_QUEUE_RT)
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#define METHODASYNCIOCALLBACK(Callback, Parent) \
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METHODASYNCCALLBACKEX(Callback, Parent, MFASYNC_FAST_IO_PROCESSING_CALLBACK, MFASYNC_CALLBACK_QUEUE_IO)
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////////////////////////////////////////////////////////
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//
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#define METHODASYNCCALLBACKEX2(Callback, Parent, GetQueue ) \
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METHODASYNCCALLBACKEX(Callback, Parent, \
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0, \
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GetParent()->GetQueue() )
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#define METHODASYNCCALLBACKEX3(Callback, Parent, GetFlags, GetQueue ) \
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METHODASYNCCALLBACKEX(Callback, Parent, \
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GetParent()->GetFlags(), GetParent()->GetQueue() )
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#endif
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