220 lines
7.1 KiB
C++
220 lines
7.1 KiB
C++
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/*************************************************************************/
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/* Copyright (C) 1999 Microsoft Corporation */
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/* File: Bookmark.h */
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/* Description: Implementation of Bookmark API */
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/* Author: Steve Rowe */
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/* Modified: David Janecek */
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/*************************************************************************/
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#include "stdafx.h"
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#include "msdvd.h"
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#include "msdvdadm.h"
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#include "Bookmark.h"
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/*************************************************************************/
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/* Global consts. */
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/*************************************************************************/
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static const WCHAR* cgszBookmarkName = L"StopBookMark";
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static const TCHAR g_szBookmark[] = TEXT("DVD.bookmark");
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/*************************************************************************/
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/* Outgoing interaface implementation. */
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/*************************************************************************/
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/*************************************************************************/
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/* Function: SaveBookmark */
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/*************************************************************************/
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STDMETHODIMP CMSWebDVD::SaveBookmark(){
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HRESULT hr = S_OK;
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try {
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INITIALIZE_GRAPH_IF_NEEDS_TO_BE
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if(!m_pDvdInfo2){
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throw(E_UNEXPECTED);
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}/* end of if statement */
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CComPtr<IDvdState> pBookmark;
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hr = m_pDvdInfo2->GetState(&pBookmark);
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if(FAILED(hr)){
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throw(hr);
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}/* end of if statement */
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hr = CBookmark::SaveToRegistry(pBookmark);
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}/* end of try statement */
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catch(HRESULT hrTmp){
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hr = hrTmp;
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}/* end of catch statement */
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catch(...){
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hr = E_UNEXPECTED;
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}/* end of catch statement */
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return HandleError(hr);
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}/* end of function SaveBookmark */
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/*************************************************************************/
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/* Function: RestoreBookmark */
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/* Description: Restores the state by loading the bookmark stream */
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/*************************************************************************/
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STDMETHODIMP CMSWebDVD::RestoreBookmark(){
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HRESULT hr = S_OK;
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try {
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CComPtr<IDvdState> pBookmark;
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HRESULT hrTemp = CBookmark::LoadFromRegistry(&pBookmark);
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if(SUCCEEDED(hrTemp)){
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INITIALIZE_GRAPH_IF_NEEDS_TO_BE
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if(!m_pDvdCtl2){
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throw(E_UNEXPECTED);
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}/* end of if statement */
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hr = m_pDvdCtl2->SetState(pBookmark, DVD_CMD_FLAG_Block| DVD_CMD_FLAG_Flush, 0);
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}
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}/* end of try statement */
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catch(HRESULT hrTmp){
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hr = hrTmp;
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}/* end of catch statement */
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catch(...){
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hr = E_UNEXPECTED;
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}/* end of catch statement */
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return HandleError(hr);
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}/* end of function RestoreBookmark */
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/*************************************************************************/
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/* Function: DeleteBookmark */
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/* Description: Blasts the bookmark file away. */
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/*************************************************************************/
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STDMETHODIMP CMSWebDVD::DeleteBookmark(){
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HRESULT hr = S_OK;
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try {
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hr = CBookmark::DeleteFromRegistry();
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}/* end of try statement */
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catch(HRESULT hrTmp){
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hr = hrTmp;
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}/* end of catch statement */
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catch(...){
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hr = E_UNEXPECTED;
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}/* end of catch statement */
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return HandleError(hr);
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}/* end of function DeleteBookmark */
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/*************************************************************************/
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/* CBookMark helper class implementation. */
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/*************************************************************************/
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/*************************************************************/
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/* Name: SaveToRegistry
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/* Description: Save the bookmark to registry
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/*************************************************************/
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HRESULT CBookmark::SaveToRegistry(IDvdState *pbookmark)
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{
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IPersistMemory* pPersistMemory;
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HRESULT hr = pbookmark->QueryInterface(IID_IPersistMemory, (void **) &pPersistMemory );
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if (SUCCEEDED(hr)) {
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ULONG ulMax;
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hr = pPersistMemory->GetSizeMax( &ulMax );
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if( SUCCEEDED( hr )) {
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BYTE *buffer = new BYTE[ulMax];
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hr = pPersistMemory->Save( buffer, TRUE, ulMax );
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DWORD dwLen = ulMax;
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if (SUCCEEDED(hr)) {
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BOOL bSuccess = SetRegistryBytesCU(g_szBookmark, buffer, dwLen);
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if (!bSuccess)
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hr = E_FAIL;
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}
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delete[] buffer;
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}
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pPersistMemory->Release();
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}
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return hr;
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}
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/*************************************************************/
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/* Name: LoadFromRegistry
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/* Description: load the bookmark from registry
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/*************************************************************/
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HRESULT CBookmark::LoadFromRegistry(IDvdState **ppBookmark)
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{
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HRESULT hr = CoCreateInstance( CLSID_DVDState, NULL, CLSCTX_INPROC_SERVER, IID_IDvdState, (LPVOID*) ppBookmark );
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if( SUCCEEDED( hr )) {
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IPersistMemory* pPersistMemory;
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hr = (*ppBookmark)->QueryInterface(IID_IPersistMemory, (void **) &pPersistMemory );
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if( SUCCEEDED( hr )) {
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ULONG ulMax;
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hr = pPersistMemory->GetSizeMax( &ulMax );
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if (SUCCEEDED(hr)) {
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BYTE *buffer = new BYTE[ulMax];
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DWORD dwLen = ulMax;
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BOOL bFound = GetRegistryBytesCU(g_szBookmark, buffer, &dwLen);
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if (bFound && dwLen != 0){
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hr = pPersistMemory->Load( buffer, dwLen);
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}
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else{
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dwLen = ulMax;
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bFound = GetRegistryBytes(g_szBookmark, buffer, &dwLen);
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if (bFound && dwLen != 0){
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hr = pPersistMemory->Load( buffer, dwLen);
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if(SUCCEEDED(hr)){
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SetRegistryBytes(g_szBookmark, NULL, 0);
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}
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}
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else{
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hr = E_FAIL;
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}
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}
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delete[] buffer;
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}
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pPersistMemory->Release();
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}
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}
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return hr;
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}
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/*************************************************************/
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/* Name: DeleteFromRegistry
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/* Description: load the bookmark from registry
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/*************************************************************/
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HRESULT CBookmark::DeleteFromRegistry()
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{
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HRESULT hr = S_OK;
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BOOL bSuccess = SetRegistryBytesCU(g_szBookmark, NULL, 0);
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if (!bSuccess)
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hr = E_FAIL;
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return hr;
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}
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/*************************************************************************/
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/* End of file: Bookmark.cpp */
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/*************************************************************************/
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