62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
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// txfac.cpp -- Class factory for LZX transform instances
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#include "stdafx.h"
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STDMETHODIMP CLZX_TransformFactory::Create(IUnknown *punkOuter, REFIID riid, PVOID *ppv)
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{
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PCLZX_TransformFactory pTxFac = New CLZX_TransformFactory(punkOuter);
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if (pTxFac == NULL)
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return STG_E_INSUFFICIENTMEMORY;
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HRESULT hr = pTxFac->m_ImpITXFactory.Init();
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if (hr == S_OK)
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hr = pTxFac->QueryInterface(riid, ppv);
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if (hr != S_OK)
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delete pTxFac;
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return hr;
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}
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HRESULT STDMETHODCALLTYPE CLZX_TransformFactory::CImpITransformFactory::DefaultControlData
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(XformControlData **ppXFCD)
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{
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LZX_Control_Data *pXFCD = PLZX_Control_Data(OLEHeap()->Alloc(sizeof(LZX_Control_Data)));
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if (!pXFCD)
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return E_OUTOFMEMORY;
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pXFCD->cdwControlData = 6;
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pXFCD->dwLZXMagic = LZX_MAGIC;
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pXFCD->dwVersion = LZX_Current_Version;
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pXFCD->dwMulResetBlock = RESET_BLOCK_SIZE;
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pXFCD->dwMulWindowSize = WINDOW_SIZE;
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pXFCD->dwMulSecondPartition = SECOND_PARTITION_SIZE;
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pXFCD->dwOptions = LXZ_DEF_OPT_FLAGS;
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*ppXFCD = PXformControlData(pXFCD);
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return NO_ERROR;
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}
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HRESULT STDMETHODCALLTYPE CLZX_TransformFactory::CImpITransformFactory::CreateTransformInstance
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(ITransformInstance *pITxInstMedium, // Container data span for transformed data
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ULARGE_INTEGER cbUntransformedSize, // Untransformed size of data
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PXformControlData pXFCD, // Control data for this instance
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const CLSID *rclsidXForm, // Transform Class ID
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const WCHAR *pwszDataSpaceName, // Data space name for this instance
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ITransformServices *pXformServices, // Utility routines
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IKeyInstance *pKeyManager, // Interface to get enciphering keys
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ITransformInstance **ppTransformInstance // Out: Instance transform interface
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)
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{
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return CTransformInstance::Create
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(pITxInstMedium, cbUntransformedSize, pXFCD,
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rclsidXForm, pwszDataSpaceName,
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pXformServices, pKeyManager, ppTransformInstance
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);
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}
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