155 lines
3.1 KiB
C++
155 lines
3.1 KiB
C++
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/****************************************************************************
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*
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* UNMARSH.CPP
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*
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* unmarshalling stub
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*
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* Copyright (c) 1992 Microsoft Corporation. All Rights Reserved.
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*
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* You have a royalty-free right to use, modify, reproduce and
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* distribute the Sample Files (and/or any modified version) in
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* any way you find useful, provided that you agree that
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* Microsoft has no warranty obligations or liability for any
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* Sample Application Files which are modified.
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*
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***************************************************************************/
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#include <win32.h>
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#include <storage.h>
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#include <avifmt.h>
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#include "avifile.h"
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#include "avifilei.h"
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#include "unmarsh.h"
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#include "debug.h"
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HRESULT CUnMarshal::Create(
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IUnknown FAR* pUnknownOuter,
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const IID FAR& riid,
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void FAR* FAR* ppv)
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{
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IUnknown FAR* pUnknown;
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CUnMarshal FAR* pUnMarshal;
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HRESULT hresult;
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DPF("Creating Simple UnMarshal Instance....\n");
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pUnMarshal = new FAR CUnMarshal(pUnknownOuter, &pUnknown);
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if (!pUnMarshal)
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return ResultFromScode(E_OUTOFMEMORY);
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hresult = pUnknown->QueryInterface(riid, ppv);
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if (FAILED(GetScode(hresult)))
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delete pUnMarshal;
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return hresult;
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}
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CUnMarshal::CUnMarshal(
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IUnknown FAR* pUnknownOuter,
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IUnknown FAR* FAR* ppUnknown)
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{
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if (pUnknownOuter)
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m_pUnknownOuter = pUnknownOuter;
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else
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m_pUnknownOuter = this;
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*ppUnknown = this;
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}
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STDMETHODIMP CUnMarshal::QueryInterface(
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const IID FAR& iid,
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void FAR* FAR* ppv)
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{
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if (iid == IID_IUnknown)
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*ppv = this;
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else if (iid == IID_IMarshal) {
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*ppv = this;
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} else
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return ResultFromScode(E_NOINTERFACE);
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AddRef();
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return NULL;
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}
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/* - - - - - - - - */
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STDMETHODIMP_(ULONG) CUnMarshal::AddRef()
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{
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uUseCount++;
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return ++m_refs;
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}
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STDMETHODIMP_(ULONG) CUnMarshal::Release()
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{
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uUseCount--;
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if (!--m_refs) {
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delete this;
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return 0;
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}
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return m_refs;
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}
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// *** IMarshal methods ***
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STDMETHODIMP CUnMarshal::GetUnmarshalClass (THIS_ REFIID riid, LPVOID pv,
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DWORD dwDestContext, LPVOID pvDestContext,
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DWORD mshlflags, LPCLSID pCid)
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{
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HRESULT hr = NOERROR;
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return hr;
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}
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STDMETHODIMP CUnMarshal::GetMarshalSizeMax (THIS_ REFIID riid, LPVOID pv,
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DWORD dwDestContext, LPVOID pvDestContext,
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DWORD mshlflags, LPDWORD pSize)
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{
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HRESULT hr = NOERROR;
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return hr;
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}
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STDMETHODIMP CUnMarshal::MarshalInterface (THIS_ LPSTREAM pStm, REFIID riid,
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LPVOID pv, DWORD dwDestContext, LPVOID pvDestContext,
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DWORD mshlflags)
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{
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HRESULT hr = NOERROR;
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return hr;
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}
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STDMETHODIMP CUnMarshal::UnmarshalInterface (THIS_ LPSTREAM pStm, REFIID riid,
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LPVOID FAR* ppv)
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{
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HRESULT hr;
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IUnknown FAR * punk;
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hr = pStm->Read(&punk,sizeof(punk),NULL);
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DPF("Unmarshalling %08lx\n", (DWORD) (LPVOID) punk);
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if (hr == NOERROR) {
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hr = punk->QueryInterface(riid, ppv);
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if (hr == NOERROR)
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punk->Release();
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}
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return hr;
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}
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STDMETHODIMP CUnMarshal::ReleaseMarshalData (THIS_ LPSTREAM pStm)
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{
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HRESULT hr = NOERROR;
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return hr;
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}
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STDMETHODIMP CUnMarshal::DisconnectObject (THIS_ DWORD dwReserved)
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{
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HRESULT hr = NOERROR;
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return hr;
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}
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