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// DLLExports.cpp
#include "StdAfx.h"
#include "Common/MyInitGuid.h"
#include "Common/ComTry.h"
#include "ByteSwap.h"
#include "../../ICoder.h"
extern "C"
BOOL WINAPI DllMain(HINSTANCE /* hInstance */, DWORD /* dwReason */, LPVOID /*lpReserved*/)
{
return TRUE;
}
STDAPI CreateObject(const GUID *clsid, const GUID *iid, void **outObject)
{
COM_TRY_BEGIN
*outObject = 0;
int correctInterface = (*iid == IID_ICompressFilter);
CMyComPtr<ICompressFilter> coder;
if (*clsid == CLSID_CCompressConvertByteSwap2)
{
if (!correctInterface)
return E_NOINTERFACE;
coder = (ICompressFilter *)new CByteSwap2();
}
else if (*clsid == CLSID_CCompressConvertByteSwap4)
{
if (!correctInterface)
return E_NOINTERFACE;
coder = (ICompressFilter *)new CByteSwap4();
}
else
return CLASS_E_CLASSNOTAVAILABLE;
*outObject = coder.Detach();
COM_TRY_END
return S_OK;
}
struct CSwapMethodInfo
{
char ID[3];
const wchar_t *Name;
const GUID *clsid;
};
static CSwapMethodInfo g_Methods[] =
{
{ { 0x2, 0x03, 0x02 }, L"Swap2", &CLSID_CCompressConvertByteSwap2 },
{ { 0x2, 0x03, 0x04 }, L"Swap4", &CLSID_CCompressConvertByteSwap4 }
};
STDAPI GetNumberOfMethods(UINT32 *numMethods)
{
*numMethods = sizeof(g_Methods) / sizeof(g_Methods[1]);
return S_OK;
}
STDAPI GetMethodProperty(UINT32 index, PROPID propID, PROPVARIANT *value)
{
if (index > sizeof(g_Methods) / sizeof(g_Methods[1]))
return E_INVALIDARG;
::VariantClear((tagVARIANT *)value);
const CSwapMethodInfo &method = g_Methods[index];
switch(propID)
{
case NMethodPropID::kID:
{
if ((value->bstrVal = ::SysAllocStringByteLen(method.ID,
sizeof(method.ID))) != 0)
value->vt = VT_BSTR;
return S_OK;
}
case NMethodPropID::kName:
{
if ((value->bstrVal = ::SysAllocString(method.Name)) != 0)
value->vt = VT_BSTR;
return S_OK;
}
case NMethodPropID::kDecoder:
case NMethodPropID::kEncoder:
{
if ((value->bstrVal = ::SysAllocStringByteLen(
(const char *)method.clsid, sizeof(GUID))) != 0)
value->vt = VT_BSTR;
return S_OK;
}
}
return S_OK;
}
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