509 lines
12 KiB
C++
509 lines
12 KiB
C++
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/*****************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 2000
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*
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* TITLE: ImageLst.cpp
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*
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* VERSION: 1.0
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*
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* DATE: 2000/11/14
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*
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* DESCRIPTION: Manages Images Item List
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*
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*****************************************************************************/
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#include <stdafx.h>
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#include <mmsystem.h>
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#include "wiavideotest.h"
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static struct
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{
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UINT uiNumPicturesInList;
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BOOL bExitThread;
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HANDLE hItemListThread;
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} LOCAL_GVAR =
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{
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0,
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FALSE,
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NULL
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};
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typedef struct tagThreadArgs_t
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{
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BOOL bWiaDeviceListMode;
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union
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{
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struct
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{
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DWORD dwWiaCookie;
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IGlobalInterfaceTable *pGIT;
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} WiaItemList;
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struct
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{
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TCHAR szImagesDirectory[255 + 1];
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} DShowItemList;
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};
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} ThreadArgs_t;
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/****************************Local Function Prototypes********************/
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void IncNumPicsInList();
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DWORD WINAPI LoadListWithWiaItems(IGlobalInterfaceTable *pGIT,
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DWORD dwCookie);
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DWORD WINAPI LoadListWithFileItems(const TCHAR *pszImagesDirectory);
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DWORD WINAPI ItemListThreadProc(void *pArgs);
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///////////////////////////////
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// IncNumPicsInList
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//
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void IncNumPicsInList()
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{
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InterlockedIncrement((LONG*) &LOCAL_GVAR.uiNumPicturesInList);
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SetDlgItemInt(APP_GVAR.hwndMainDlg, IDC_EDIT_NUM_PICTURES_TAKEN,
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LOCAL_GVAR.uiNumPicturesInList, FALSE);
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return;
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}
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///////////////////////////////
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// ImageLst_PostAddImageRequest
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//
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HRESULT ImageLst_PostAddImageRequest(BSTR bstrNewImage)
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{
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HRESULT hr = S_OK;
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if (bstrNewImage == NULL)
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{
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return E_POINTER;
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}
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//
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// This will be freed by the AddImageToList function below.
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//
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BSTR bstrPosted = ::SysAllocString(bstrNewImage);
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PostMessage(APP_GVAR.hwndMainDlg, WM_CUSTOM_ADD_IMAGE, 0,
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(LPARAM)bstrPosted);
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return hr;
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}
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///////////////////////////////
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// ImageLst_AddImageToList
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//
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HRESULT ImageLst_AddImageToList(BSTR bstrNewImage)
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{
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HRESULT hr = S_OK;
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TCHAR szNewImage[MAX_PATH] = {0};
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if (bstrNewImage == NULL)
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{
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return E_POINTER;
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}
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if (hr == S_OK)
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{
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hr = AppUtil_ConvertToTCHAR((WCHAR*) bstrNewImage,
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szNewImage,
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sizeof(szNewImage) / sizeof(TCHAR));
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}
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if (hr == S_OK)
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{
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//
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// Insert at the top of the list.
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//
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LRESULT lResult = 0;
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lResult = SendDlgItemMessage(APP_GVAR.hwndMainDlg,
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IDC_LIST_NEW_IMAGES,
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LB_ADDSTRING,
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0,
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(LPARAM) szNewImage);
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WPARAM Index = (WPARAM) lResult;
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IncNumPicsInList();
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SendDlgItemMessage(APP_GVAR.hwndMainDlg,
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IDC_LIST_NEW_IMAGES,
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LB_SETCURSEL,
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Index,
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0);
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}
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if (bstrNewImage)
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{
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::SysFreeString(bstrNewImage);
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}
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return hr;
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}
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///////////////////////////////
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// LoadListWithWiaItems
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//
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DWORD WINAPI LoadListWithWiaItems(IGlobalInterfaceTable *pGIT,
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DWORD dwCookie)
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{
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HRESULT hr = S_OK;
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IWiaItem *pSelectedDevice = NULL;
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IEnumWiaItem *pIEnumItem = NULL;
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if ((pGIT == NULL) || (dwCookie == 0))
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{
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return -1;
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}
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hr = pGIT->GetInterfaceFromGlobal(dwCookie,
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IID_IWiaItem,
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(void**)&pSelectedDevice);
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if (pSelectedDevice == NULL)
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{
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return -1;
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}
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hr = pSelectedDevice->EnumChildItems(&pIEnumItem);
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if (hr == S_OK)
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{
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hr = pIEnumItem->Reset();
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}
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DWORD dwStartTime = 0;
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DWORD dwEndTime = 0;
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dwStartTime = timeGetTime();
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if (hr == S_OK)
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{
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BOOL bDone = LOCAL_GVAR.bExitThread;
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while (!bDone)
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{
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IWiaItem *pIWiaItem = NULL;
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IWiaPropertyStorage *pStorage = NULL;
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TCHAR szItemName[MAX_PATH] = {0};
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hr = pIEnumItem->Next(1, &pIWiaItem, NULL);
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if (LOCAL_GVAR.bExitThread)
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{
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//
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// Exit the thread
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//
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hr = E_FAIL;
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}
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if (hr == S_OK)
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{
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hr = pIWiaItem->QueryInterface(IID_IWiaPropertyStorage, (void**) &pStorage);
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}
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if (hr == S_OK)
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{
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PROPVARIANT pv;
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PropVariantInit(&pv);
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hr = WiaProc_GetProperty(pStorage, WIA_IPA_FULL_ITEM_NAME, &pv);
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if (pv.vt == VT_BSTR)
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{
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ImageLst_PostAddImageRequest(pv.bstrVal);
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}
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PropVariantClear(&pv);
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}
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if (pIWiaItem)
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{
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pIWiaItem->Release();
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pIWiaItem = NULL;
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}
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if (pStorage)
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{
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pStorage->Release();
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pStorage = NULL;
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}
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if (hr != S_OK)
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{
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bDone = TRUE;
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}
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else if (LOCAL_GVAR.bExitThread)
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{
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bDone = TRUE;
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}
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}
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}
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dwEndTime = timeGetTime();
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SetDlgItemInt(APP_GVAR.hwndMainDlg,
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IDC_EDIT_LIST_LOAD_TIME,
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(UINT) abs(dwEndTime - dwStartTime),
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FALSE);
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if (pIEnumItem)
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{
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pIEnumItem->Release();
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pIEnumItem = NULL;
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}
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return 0;
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}
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///////////////////////////////
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// LoadListWithFileItems
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//
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DWORD WINAPI LoadListWithFileItems(const TCHAR *pszImagesDirectory)
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{
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HRESULT hr = S_OK;
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TCHAR szSearchPath[MAX_PATH + 1] = {0};
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HANDLE hFindHandle = NULL;
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BOOL bDone = FALSE;
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WIN32_FIND_DATA FindData;
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if (pszImagesDirectory == NULL)
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{
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return -1;
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}
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_sntprintf(szSearchPath, sizeof(szSearchPath) / sizeof(TCHAR),
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TEXT("%s\\*.jpg"), pszImagesDirectory);
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hFindHandle = FindFirstFile(szSearchPath, &FindData);
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if (hFindHandle == INVALID_HANDLE_VALUE)
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{
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bDone = TRUE;
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}
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DWORD dwStartTime = 0;
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DWORD dwEndTime = 0;
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dwStartTime = timeGetTime();
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while ((!bDone) && (!LOCAL_GVAR.bExitThread))
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{
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BOOL bSuccess = FALSE;
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BSTR bstrFileName = NULL;
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TCHAR szFileName[_MAX_FNAME + MAX_PATH + 1] = {0};
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WCHAR wszFileName[_MAX_FNAME + MAX_PATH + 1] = {0};
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_sntprintf(szFileName, sizeof(szFileName) / sizeof(TCHAR),
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TEXT("%s\\%s"), pszImagesDirectory, FindData.cFileName);
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AppUtil_ConvertToWideString(szFileName,
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wszFileName,
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sizeof(wszFileName) / sizeof(WCHAR));
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//
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// This is relased by the post processor function
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//
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bstrFileName = ::SysAllocString(wszFileName);
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ImageLst_PostAddImageRequest(bstrFileName);
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bSuccess = FindNextFile(hFindHandle, &FindData);
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if (!bSuccess)
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{
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bDone = TRUE;
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}
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}
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dwEndTime = timeGetTime();
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SetDlgItemInt(APP_GVAR.hwndMainDlg,
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IDC_EDIT_LIST_LOAD_TIME,
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(UINT) abs(dwEndTime - dwStartTime),
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FALSE);
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if (hFindHandle)
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{
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FindClose(hFindHandle);
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hFindHandle = NULL;
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}
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return 0;
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}
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///////////////////////////////
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// ItemListThreadProc
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//
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DWORD WINAPI ItemListThreadProc(void *pArgs)
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{
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HRESULT hr = S_OK;
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ThreadArgs_t *pThreadArgs = (ThreadArgs_t*) pArgs;
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if (pThreadArgs == NULL)
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{
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return -1;
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}
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if (pThreadArgs->bWiaDeviceListMode == TRUE)
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{
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LoadListWithWiaItems(pThreadArgs->WiaItemList.pGIT,
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pThreadArgs->WiaItemList.dwWiaCookie);
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if (pThreadArgs->WiaItemList.pGIT)
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{
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pThreadArgs->WiaItemList.pGIT->Release();
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pThreadArgs->WiaItemList.pGIT = NULL;
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}
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}
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else
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{
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LoadListWithFileItems(pThreadArgs->DShowItemList.szImagesDirectory);
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}
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delete pThreadArgs;
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pThreadArgs = NULL;
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return 0;
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}
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///////////////////////////////
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// ImageLst_PopulateWiaItemList
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//
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HRESULT ImageLst_PopulateWiaItemList(IGlobalInterfaceTable *pGIT,
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DWORD dwCookie)
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{
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HRESULT hr = S_OK;
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DWORD dwThreadID = 0;
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ThreadArgs_t *pArgs = NULL;
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if ((pGIT == NULL) ||
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(dwCookie == 0))
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{
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return E_POINTER;
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}
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LOCAL_GVAR.uiNumPicturesInList = 0;
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SetDlgItemInt(APP_GVAR.hwndMainDlg, IDC_EDIT_NUM_PICTURES_TAKEN,
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LOCAL_GVAR.uiNumPicturesInList, FALSE);
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SetDlgItemInt(APP_GVAR.hwndMainDlg,
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IDC_EDIT_LIST_LOAD_TIME,
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0,
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FALSE);
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pArgs = new ThreadArgs_t;
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if (pArgs == NULL)
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{
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return E_OUTOFMEMORY;
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}
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ZeroMemory(pArgs, sizeof(*pArgs));
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pGIT->AddRef();
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pArgs->bWiaDeviceListMode = TRUE;
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pArgs->WiaItemList.pGIT = pGIT;
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pArgs->WiaItemList.dwWiaCookie = dwCookie;
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LOCAL_GVAR.bExitThread = FALSE;
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LOCAL_GVAR.hItemListThread = CreateThread(NULL, 0, ItemListThreadProc,
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(void*) pArgs,
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0, &dwThreadID);
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return hr;
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}
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///////////////////////////////
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// ImageLst_PopulateDShowItemList
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//
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HRESULT ImageLst_PopulateDShowItemList(const TCHAR *pszImagesDirectory)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
DWORD dwThreadID = 0;
|
||
|
|
ThreadArgs_t *pArgs = NULL;
|
||
|
|
|
||
|
|
if (pszImagesDirectory == NULL)
|
||
|
|
{
|
||
|
|
return E_POINTER;
|
||
|
|
}
|
||
|
|
|
||
|
|
LOCAL_GVAR.uiNumPicturesInList = 0;
|
||
|
|
SetDlgItemInt(APP_GVAR.hwndMainDlg, IDC_EDIT_NUM_PICTURES_TAKEN,
|
||
|
|
LOCAL_GVAR.uiNumPicturesInList, FALSE);
|
||
|
|
|
||
|
|
SetDlgItemInt(APP_GVAR.hwndMainDlg,
|
||
|
|
IDC_EDIT_LIST_LOAD_TIME,
|
||
|
|
0,
|
||
|
|
FALSE);
|
||
|
|
|
||
|
|
pArgs = new ThreadArgs_t;
|
||
|
|
|
||
|
|
if (pArgs == NULL)
|
||
|
|
{
|
||
|
|
return E_OUTOFMEMORY;
|
||
|
|
}
|
||
|
|
|
||
|
|
ZeroMemory(pArgs, sizeof(*pArgs));
|
||
|
|
|
||
|
|
pArgs->bWiaDeviceListMode = FALSE;
|
||
|
|
_tcsncpy(pArgs->DShowItemList.szImagesDirectory,
|
||
|
|
pszImagesDirectory,
|
||
|
|
sizeof(pArgs->DShowItemList.szImagesDirectory) / sizeof(TCHAR));
|
||
|
|
|
||
|
|
LOCAL_GVAR.bExitThread = FALSE;
|
||
|
|
LOCAL_GVAR.hItemListThread = CreateThread(NULL, 0, ItemListThreadProc,
|
||
|
|
(void*) pArgs,
|
||
|
|
0, &dwThreadID);
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
///////////////////////////////
|
||
|
|
// ImageLst_Clear
|
||
|
|
//
|
||
|
|
HRESULT ImageLst_Clear()
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Clear the New Image List
|
||
|
|
//
|
||
|
|
SendDlgItemMessage(APP_GVAR.hwndMainDlg,
|
||
|
|
IDC_LIST_NEW_IMAGES,
|
||
|
|
LB_RESETCONTENT,
|
||
|
|
0,
|
||
|
|
0);
|
||
|
|
|
||
|
|
LOCAL_GVAR.uiNumPicturesInList = 0;
|
||
|
|
SetDlgItemInt(APP_GVAR.hwndMainDlg, IDC_EDIT_NUM_PICTURES_TAKEN,
|
||
|
|
LOCAL_GVAR.uiNumPicturesInList, FALSE);
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
///////////////////////////////
|
||
|
|
// ImageLst_CancelLoadAndWait
|
||
|
|
//
|
||
|
|
HRESULT ImageLst_CancelLoadAndWait(DWORD dwTimeout)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (LOCAL_GVAR.hItemListThread)
|
||
|
|
{
|
||
|
|
LOCAL_GVAR.bExitThread = TRUE;
|
||
|
|
WaitForSingleObject(LOCAL_GVAR.hItemListThread, dwTimeout);
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|