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#pragma once
// This context is used for managing reads/writes for data transfer.
// It keeps track of the number of bytes read/written for the current transfer.
class ResourceContext : public IUnknown
{
public:
ResourceContext() :
NumBytesTransfered(0),
m_cRef(1),
CreateRequest(FALSE)
{
Key = WPD_PROPERTY_NULL;
}
~ResourceContext()
{
}
CAtlStringW ObjectID;
PROPERTYKEY Key;
DWORD NumBytesTransfered;
BOOL CreateRequest;
public: // IUnknown
ULONG __stdcall AddRef()
{
InterlockedIncrement((long*) &m_cRef);
return m_cRef;
}
_At_(this, __drv_freesMem(Mem))
ULONG __stdcall Release()
{
ULONG ulRefCount = m_cRef - 1;
if (InterlockedDecrement((long*) &m_cRef) == 0)
{
delete this;
return 0;
}
return ulRefCount;
}
HRESULT __stdcall QueryInterface(
REFIID riid,
void** ppv)
{
HRESULT hr = S_OK;
if(riid == IID_IUnknown)
{
*ppv = static_cast<IUnknown*>(this);
AddRef();
}
else
{
*ppv = NULL;
hr = E_NOINTERFACE;
}
return hr;
}
private:
DWORD m_cRef;
};
class WpdObjectResources
{
public:
WpdObjectResources();
~WpdObjectResources();
HRESULT Initialize(_In_ FakeDevice *pFakeDevice);
HRESULT DispatchWpdMessage(_In_ REFPROPERTYKEY Command,
_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnGetSupportedResources(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnGetAttributes(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnOpen(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnRead(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnWrite(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnClose(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnDelete(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnCreate(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnRevert(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
HRESULT OnSeek(_In_ IPortableDeviceValues* pParams,
_In_ IPortableDeviceValues* pResults);
private:
HRESULT CreateResourceContext(
_In_ ContextMap* pContextMap,
_In_ LPCWSTR pszObjectID,
_In_ REFPROPERTYKEY ResourceKey,
_In_ BOOL bCreateRequest,
_Outptr_ LPWSTR* ppszResourceContext);
HRESULT DestroyResourceContext(
_In_ ContextMap* pContextMap,
_In_ LPCWSTR pszResourceContext);
private:
FakeDevice* m_pFakeDevice;
};
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