HRESULT LoadPropertyStoreFromStream(IStream *pstm, REFIID riid, void **ppv) { *ppv = NULL; STATSTG stat; HRESULT hr = pstm->Stat(&stat, STATFLAG_NONAME); if (SUCCEEDED(hr)) { IPersistStream *pps; hr = PSCreateMemoryPropertyStore(IID_PPV_ARGS(&pps)); if (SUCCEEDED(hr)) { if (stat.cbSize.QuadPart == 0) { hr = S_OK; // empty stream => empty property store } else if (stat.cbSize.QuadPart > (128 * 1024)) { hr = STG_E_MEDIUMFULL; // can't be that large } else { hr = pps->Load(pstm); } if (SUCCEEDED(hr)) { hr = pps->QueryInterface(riid, ppv); } pps->Release(); } } return hr; }
HRESULT CLTDMLoader::LoadFromFile(LPDMUS_OBJECTDESC pDesc,IDirectMusicObject8 ** ppIObject) { HRESULT hr; hr = CoCreateInstance(pDesc->guidClass, NULL,CLSCTX_INPROC_SERVER,IID_IDirectMusicObject8, (void **) ppIObject); if (SUCCEEDED(hr)) { WCHAR wzFullPath[DMUS_MAX_FILENAME]; ZeroMemory( wzFullPath, sizeof(WCHAR) * DMUS_MAX_FILENAME ); CLTDMFileStream *pStream = new CLTDMFileStream ( this ); if (pStream) { if (pDesc->dwValidData & DMUS_OBJ_FULLPATH) { wcscpy(wzFullPath,pDesc->wszFileName); } else { // find the directory that matches this class and copy it to the path CLoadDirByClassItem* pItem = m_pLoadDirByClassList->Find(pDesc->guidClass); if (pItem != NULL) wcscpy(wzFullPath, pItem->GetPath()); // check if slash was on end of string if not add it if ((wzFullPath[wcslen(wzFullPath)-1] != m_wszBackSlash[0]) && (wzFullPath[wcslen(wzFullPath)-1] != m_wszForwardSlash[0])) { wcscat(wzFullPath, m_wszBackSlash); } // add filename to string wcscat(wzFullPath, pDesc->wszFileName); } hr = pStream->Open(wzFullPath,GENERIC_READ); if (SUCCEEDED(hr)) { IPersistStream* pIPS; hr = (*ppIObject)->QueryInterface( IID_IPersistStream, (void**)&pIPS ); if (SUCCEEDED(hr)) { // Now that we have the IPersistStream interface from the object, we can ask it to load from our stream! hr = pIPS->Load( pStream ); pIPS->Release(); } } pStream->Release(); } else { hr = E_OUTOFMEMORY; } if (FAILED(hr)) { (*ppIObject)->Release(); } } return hr; }
HRESULT CDShowCtrl::LoadGraphFile(IGraphBuilder *pGraph, const WCHAR* wszName) { IStorage *pStorage = 0; if (S_OK != StgIsStorageFile(wszName)) { return E_FAIL; } HRESULT hr = StgOpenStorage(wszName, 0, STGM_TRANSACTED | STGM_READ | STGM_SHARE_DENY_WRITE, 0, 0, &pStorage); if (FAILED(hr)) { return hr; } IPersistStream *pPersistStream = 0; hr = pGraph->QueryInterface(IID_IPersistStream, reinterpret_cast<void**>(&pPersistStream)); if (SUCCEEDED(hr)) { IStream *pStream = 0; hr = pStorage->OpenStream(L"ActiveMovieGraph", 0, STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &pStream); if(SUCCEEDED(hr)) { hr = pPersistStream->Load(pStream); pStream->Release(); } pPersistStream->Release(); } pStorage->Release(); return hr; }
HRESULT SaveSerializedPropStorageToStream(IPersistSerializedPropStorage *psps, IStream *pstm) { IPersistStream *pPersistStream; HRESULT hr = psps->QueryInterface(IID_PPV_ARGS(&pPersistStream)); if (SUCCEEDED(hr)) { // implement size limit here hr = pPersistStream->Save(pstm, TRUE); pPersistStream->Release(); } return hr; }
/* 把当前工作的滤波器链表保存到*.grf */ void CVMR_Capture::SaveGraph(CString wFileName) { HRESULT hr; { IStorage* pStorage=NULL; // First, create a document file that will hold the GRF file hr = ::StgCreateDocfile(wFileName.AllocSysString(), STGM_CREATE|STGM_TRANSACTED|STGM_READWRITE|STGM_SHARE_EXCLUSIVE, 0, &pStorage); if (FAILED(hr)) { AfxMessageBox(TEXT("Can not create a document")); return; } // Next, create a stream to store. WCHAR wszStreamName[] = L"ActiveMovieGraph"; IStream *pStream; hr = pStorage->CreateStream(wszStreamName,STGM_WRITE|STGM_CREATE|STGM_SHARE_EXCLUSIVE, 0, 0, &pStream); if(FAILED(hr)) { AfxMessageBox(TEXT("Can not create a stream")); pStorage->Release(); return; } // The IpersistStream::Save method converts a stream // into a persistent object. IPersistStream *pPersist = NULL; m_pGB->QueryInterface(IID_IPersistStream, reinterpret_cast<void**>(&pPersist)); hr = pPersist->Save(pStream, TRUE); pStream->Release(); pPersist->Release(); if(SUCCEEDED(hr)) { hr = pStorage->Commit(STGC_DEFAULT); if (FAILED(hr)) { AfxMessageBox(TEXT("can not store it")); } } pStorage->Release(); } }
HRESULT CPkcs7::SaveIntoJavaClassFile(FILEHANDLE hFile,LPCOLESTR wszFileName,BOOL fClearDirty) // Save this signed data (presumably already signed) into the right place in the class file { HRESULT hr = S_OK; CFileStream stm; if (stm.OpenFileForWriting(hFile, wszFileName, FALSE)) { IPersistStream* pPerStream; hr = CJavaClassFile::CreateInstance(NULL, IID_IPersistStream, (LPVOID*)&pPerStream); if (hr == S_OK) { hr = pPerStream->Load(&stm); // load the class file if (hr == S_OK) { BLOB b; hr = CPersistMemoryHelper2::Save(&b, FALSE); // get our bits if (hr == S_OK) { IInsertSig* pSig; hr = pPerStream->QueryInterface(IID_IInsertSig, (LPVOID*)&pSig); if (hr == S_OK) { hr = pSig->SaveSig(&b); // stuff our bits in pSig->Release(); } FreeTaskMem(b); } if (hr == S_OK) { stm.Reset(); stm.Truncate(); hr = pPerStream->Save(&stm, FALSE); // save the class file } } pPerStream->Release(); } } else hr = HError(); if (hr == S_OK && fClearDirty) m_isDirty = FALSE; return hr; }
// This code was also brazenly stolen from the DX9 SDK // Pass it a file name in wszPath, and it will save the filter graph to that file. HRESULT SaveGraphFile(IGraphBuilder *pGraph, WCHAR *wszPath) { const WCHAR wszStreamName[] = L"ActiveMovieGraph"; HRESULT hr; IStorage *pStorage = NULL; // First, create a document file which will hold the GRF file hr = StgCreateDocfile( wszPath, STGM_CREATE | STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE, 0, &pStorage); if(FAILED(hr)) { return hr; } // Next, create a stream to store. IStream *pStream; hr = pStorage->CreateStream( wszStreamName, STGM_WRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE, 0, 0, &pStream); if (FAILED(hr)) { pStorage->Release(); return hr; } // The IPersistStream converts a stream into a persistent object. IPersistStream *pPersist = NULL; pGraph->QueryInterface(IID_IPersistStream, reinterpret_cast<void**>(&pPersist)); hr = pPersist->Save(pStream, TRUE); pStream->Release(); pPersist->Release(); if (SUCCEEDED(hr)) { hr = pStorage->Commit(STGC_DEFAULT); } pStorage->Release(); return hr; }
HRESULT SaveGraphFile(IGraphBuilder *pGraph, WCHAR *wszPath) { const WCHAR wszStreamName[] = L"ActiveMovieGraph"; HRESULT hr; IStorage *pStorage = NULL; hr = StgCreateDocfile( wszPath, STGM_CREATE | STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE, 0, &pStorage); if(FAILED(hr)) { return hr; } IStream *pStream; hr = pStorage->CreateStream( wszStreamName, STGM_WRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE, 0, 0, &pStream); if (FAILED(hr)) { pStorage->Release(); return hr; } IPersistStream *pPersist = NULL; pGraph->QueryInterface(IID_IPersistStream, (void**)&pPersist); hr = pPersist->Save(pStream, TRUE); pStream->Release(); pPersist->Release(); if (SUCCEEDED(hr)) { hr = pStorage->Commit(STGC_DEFAULT); } pStorage->Release(); return hr; }
HRESULT CLTDMLoader::LoadFromMemory(LPDMUS_OBJECTDESC pDesc,IDirectMusicObject8 ** ppIObject) { HRESULT hr; hr = CoCreateInstance(pDesc->guidClass, NULL,CLSCTX_INPROC_SERVER,IID_IDirectMusicObject8, (void **) ppIObject); if (SUCCEEDED(hr)) { CLTDMMemStream *pStream = new CLTDMMemStream ( this ); if (pStream) { hr = pStream->Open(pDesc->pbMemData,pDesc->llMemLength); if (SUCCEEDED(hr)) { IPersistStream* pIPS; hr = (*ppIObject)->QueryInterface( IID_IPersistStream, (void**)&pIPS ); if (SUCCEEDED(hr)) { // Now that we have the IPersistStream interface from the object, we can ask it to load from our stream! hr = pIPS->Load( pStream ); pIPS->Release(); } } pStream->Release(); } else { hr = E_OUTOFMEMORY; } if (FAILED(hr)) { (*ppIObject)->Release(); } } return hr; }
HRESULT CPkcs7::LoadFromJavaClassFile(FILEHANDLE hFile,LPCOLESTR wszFileName) // Load this signed data from this Java class file { HRESULT hr = S_OK; CFileStream stm; if (stm.OpenFileForReading(hFile, wszFileName)) { IPersistStream* pPerStream; hr = CJavaClassFile::CreateInstance(NULL, IID_IPersistStream, (LPVOID*)&pPerStream); if (hr == S_OK) { hr = pPerStream->Load(&stm); // load the class file if (hr == S_OK) { IInsertSig* pSig; hr = pPerStream->QueryInterface(IID_IInsertSig, (LPVOID*)&pSig); if (hr == S_OK) { BLOB b; hr = pSig->LoadSig(&b); // get our bits back out if (hr == S_OK) { hr = CPersistMemoryHelper2::Load(&b); // load our bits FreeTaskMem(b); } pSig->Release(); } } pPerStream->Release(); } } else hr = HError(); return hr; }