oshelper.cpp
资源名称:VC++视频传输.rar [点击查看]
上传用户:hxb_1234
上传日期:2010-03-30
资源大小:8328k
文件大小:12k
源码类别:
VC书籍
开发平台:
Visual C++
- // VirtualDub - Video processing and capture application
- // Copyright (C) 1998-2001 Avery Lee
- //
- // This program is free software; you can redistribute it and/or modify
- // it under the terms of the GNU General Public License as published by
- // the Free Software Foundation; either version 2 of the License, or
- // (at your option) any later version.
- //
- // This program is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public License
- // along with this program; if not, write to the Free Software
- // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- #include "VirtualDub.h"
- #include <stdlib.h>
- #include <windows.h>
- #include <shellapi.h>
- #include "oshelper.h"
- void Draw3DRect(HDC hDC, LONG x, LONG y, LONG dx, LONG dy, BOOL inverted) {
- HPEN hPenOld;
- hPenOld = (HPEN)SelectObject(hDC, GetStockObject(inverted ? WHITE_PEN : BLACK_PEN));
- MoveToEx(hDC, x, y+dy-1, NULL);
- LineTo(hDC, x+dx-1, y+dy-1);
- LineTo(hDC, x+dx-1, y);
- DeleteObject(SelectObject(hDC, GetStockObject(inverted ? BLACK_PEN : WHITE_PEN)));
- MoveToEx(hDC, x, y+dy-1, NULL);
- LineTo(hDC, x, y);
- LineTo(hDC, x+dx-1, y);
- DeleteObject(SelectObject(hDC, hPenOld));
- }
- // We follow MAME32's lead and put our keys in:
- //
- // HKEY_CURRENT_USERSoftwareFreewareVirtualDub
- HKEY OpenConfigKey(const char *szKeyName) {
- char temp[MAX_PATH]="Software\Freeware\VirtualDub";
- HKEY hkey;
- if (szKeyName) {
- strcat(temp, "\");
- strcat(temp, szKeyName);
- }
- return RegOpenKeyEx(HKEY_CURRENT_USER, temp, 0, KEY_ALL_ACCESS, &hkey)==ERROR_SUCCESS
- ? hkey
- : NULL;
- }
- HKEY CreateConfigKey(const char *szKeyName) {
- char temp[MAX_PATH]="Software\Freeware\VirtualDub";
- HKEY hkey;
- DWORD dwDisposition;
- if (szKeyName) {
- strcat(temp, "\");
- strcat(temp, szKeyName);
- }
- return RegCreateKeyEx(HKEY_CURRENT_USER, temp, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hkey, &dwDisposition)==ERROR_SUCCESS
- ? hkey
- : NULL;
- }
- BOOL DeleteConfigValue(const char *szKeyName, const char *szValueName) {
- HKEY hkey;
- BOOL success;
- if (!(hkey = OpenConfigKey(szKeyName)))
- return FALSE;
- success = (RegDeleteValue(hkey, szValueName) == ERROR_SUCCESS);
- RegCloseKey(hkey);
- return success;
- }
- BOOL QueryConfigString(const char *szKeyName, const char *szValueName, char *lpBuffer, int cbBuffer) {
- HKEY hkey;
- BOOL success;
- DWORD type;
- if (!(hkey = OpenConfigKey(szKeyName)))
- return FALSE;
- success = (ERROR_SUCCESS == RegQueryValueEx(hkey, szValueName, 0, &type, (LPBYTE)lpBuffer, (LPDWORD)&cbBuffer));
- RegCloseKey(hkey);
- return success;
- }
- DWORD QueryConfigBinary(const char *szKeyName, const char *szValueName, char *lpBuffer, int cbBuffer) {
- HKEY hkey;
- BOOL success;
- DWORD type;
- DWORD size = cbBuffer;
- if (!(hkey = OpenConfigKey(szKeyName)))
- return 0;
- success = (ERROR_SUCCESS == RegQueryValueEx(hkey, szValueName, 0, &type, (LPBYTE)lpBuffer, (LPDWORD)&size));
- RegCloseKey(hkey);
- return success ? size : 0;
- }
- BOOL QueryConfigDword(const char *szKeyName, const char *szValueName, DWORD *lpdwData) {
- HKEY hkey;
- BOOL success;
- DWORD type;
- DWORD size = sizeof(DWORD);
- if (!(hkey = OpenConfigKey(szKeyName)))
- return 0;
- success = (ERROR_SUCCESS == RegQueryValueEx(hkey, szValueName, 0, &type, (LPBYTE)lpdwData, (LPDWORD)&size));
- RegCloseKey(hkey);
- return success;
- }
- BOOL SetConfigString(const char *szKeyName, const char *szValueName, const char *lpBuffer) {
- HKEY hkey;
- BOOL success;
- if (!(hkey = CreateConfigKey(szKeyName)))
- return FALSE;
- success = (ERROR_SUCCESS == RegSetValueEx(hkey, szValueName, 0, REG_SZ, (LPBYTE)lpBuffer, strlen(lpBuffer)+1));
- RegCloseKey(hkey);
- return success;
- }
- BOOL SetConfigBinary(const char *szKeyName, const char *szValueName, const char *lpBuffer, int cbBuffer) {
- HKEY hkey;
- BOOL success;
- if (!(hkey = CreateConfigKey(szKeyName)))
- return FALSE;
- success = (ERROR_SUCCESS == RegSetValueEx(hkey, szValueName, 0, REG_BINARY, (LPBYTE)lpBuffer, cbBuffer));
- RegCloseKey(hkey);
- return success;
- }
- BOOL SetConfigDword(const char *szKeyName, const char *szValueName, DWORD dwData) {
- HKEY hkey;
- BOOL success;
- if (!(hkey = CreateConfigKey(szKeyName)))
- return FALSE;
- success = (ERROR_SUCCESS == RegSetValueEx(hkey, szValueName, 0, REG_DWORD, (LPBYTE)&dwData, sizeof(DWORD)));
- RegCloseKey(hkey);
- return success;
- }
- ///////////////////////////////////////////////////////////////////////////
- //
- // help support
- //
- ///////////////////////////////////////////////////////////////////////////
- static char g_szHelpPath[MAX_PATH]="VirtualD.hlp";
- void HelpSetPath() {
- char szPath[MAX_PATH];
- char *lpFilePart;
- char *ext = NULL;
- if (GetModuleFileName(NULL, szPath, sizeof szPath))
- if (GetFullPathName(szPath, sizeof g_szHelpPath, g_szHelpPath, &lpFilePart))
- strcpy(lpFilePart,"VirtualD.hlp");
- }
- const char *HelpGetPath() {
- return g_szHelpPath;
- }
- void HelpShowHelp(HWND hwnd) {
- WinHelp(hwnd, g_szHelpPath, HELP_FINDER, 0);
- }
- void HelpContext(HWND hwnd, DWORD helpID) {
- WinHelp(hwnd, g_szHelpPath, HELP_CONTEXT, helpID);
- }
- void HelpPopup(HWND hwnd, DWORD helpID) {
- WinHelp(hwnd, g_szHelpPath, HELP_CONTEXTPOPUP, helpID);
- }
- void HelpPopupByID(HWND hwnd, DWORD ctrlID, const DWORD *lookup) {
- while(lookup[0]) {
- if (lookup[0] == ctrlID)
- HelpPopup(hwnd, lookup[1]);
- lookup+=2;
- }
- }
- ///////////////////////////////////////////////////////////////////////////
- //
- // disk free space
- //
- ///////////////////////////////////////////////////////////////////////////
- static HINSTANCE g_hInstKernel32 = NULL;
- static BOOL (__stdcall *g_fpGetDiskFreeSpaceEx)(LPCTSTR, PULARGE_INTEGER, PULARGE_INTEGER, PULARGE_INTEGER) = NULL;
- static bool g_triedGetDiskFreeSpaceEx = false;
- __int64 MyGetDiskFreeSpace(const char *lpszRoot) {
- __int64 client_free, total_space, free_space;
- DWORD dwSectorsPerCluster, dwBytesPerSector, dwFreeClusters, dwTotalClusters;
- char tmp[MAX_PATH];
- if (!g_hInstKernel32 && !(g_hInstKernel32 = LoadLibrary("kernel32.dll")))
- return -1;
- if (!g_triedGetDiskFreeSpaceEx) {
- g_fpGetDiskFreeSpaceEx = (BOOL (__stdcall *)(LPCTSTR, PULARGE_INTEGER, PULARGE_INTEGER, PULARGE_INTEGER))GetProcAddress(g_hInstKernel32, "GetDiskFreeSpaceExA");
- g_triedGetDiskFreeSpaceEx = true;
- }
- lpszRoot = SplitPathRoot(tmp, lpszRoot);
- if (g_fpGetDiskFreeSpaceEx) {
- return g_fpGetDiskFreeSpaceEx(lpszRoot, (PULARGE_INTEGER)&client_free, (PULARGE_INTEGER)&total_space, (PULARGE_INTEGER)&free_space)
- ? free_space
- : -1;
- } else {
- return GetDiskFreeSpace(lpszRoot, &dwSectorsPerCluster, &dwBytesPerSector, &dwFreeClusters, &dwTotalClusters)
- ? dwFreeClusters * dwSectorsPerCluster * dwBytesPerSector
- : -1;
- }
- }
- const char *SplitPathName(const char *path) {
- const char *s = path;
- while(*s) ++s;
- while(s>path && s[-1]!='\' && s[-1]!=':')
- --s;
- return s;
- }
- const char *SplitPathExt(const char *path) {
- const char *s = path;
- const char *tail;
- while(*s) ++s;
- tail = s;
- while(s>path && s[-1]!='\' && s[-1]!=':') {
- if (s[-1]=='.')
- return s-1;
- --s;
- }
- return tail;
- }
- char *MergePath(char *path, const char *fn) {
- char *slash=NULL, *colon=NULL;
- char *s = path;
- if (!*s) {
- strcpy(path, fn);
- return path;
- }
- while(*s)
- ++s;
- if (s[-1]!='\' && s[-1]!=':')
- *s++ = '\';
- strcpy(s, fn);
- return path;
- }
- char *SplitPathRoot(char *dst, const char *path) {
- if (!path)
- return NULL;
- // C:
- if (isalpha(path[0]) && path[1]==':') {
- dst[0] = path[0];
- dst[1] = ':';
- dst[2] = '\';
- dst[3] = 0;
- return dst;
- }
- // UNC path?
- if (path[0] == '\' && path[1] == '\') {
- const char *s = path+2;
- char *t = dst;
- *t++ = '\';
- *t++ = '\';
- while(*s && *s != '\')
- *t++ = *s++;
- if (*s)
- *t++ = *s++;
- while(*s && *s != '\')
- *t++ = *s++;
- *t++ = '\';
- *t = 0;
- return dst;
- }
- return NULL;
- }
- bool IsFilenameOnFATVolume(const char *pszFilename) {
- char szFileRoot[MAX_PATH];
- DWORD dwMaxComponentLength;
- DWORD dwFSFlags;
- char szFilesystem[MAX_PATH];
- if (!GetVolumeInformation(SplitPathRoot(szFileRoot, pszFilename),
- NULL, 0, // Volume name buffer
- NULL, // Serial number buffer
- &dwMaxComponentLength,
- &dwFSFlags,
- szFilesystem,
- sizeof szFilesystem))
- return false;
- return !strnicmp(szFilesystem, "FAT", 3);
- }
- ///////////////////////////////////////////////////////////////////////////
- void LaunchURL(const char *pURL) {
- ShellExecute(NULL, "open", pURL, NULL, NULL, SW_SHOWNORMAL);
- }
- ///////////////////////////////////////////////////////////////////////////
- bool EnableCPUTracking() {
- HKEY hOpen;
- DWORD cbData;
- DWORD dwType;
- LPBYTE pByte;
- DWORD rc;
- bool fSuccess = true;
- if ( (rc = RegOpenKeyEx(HKEY_DYN_DATA,"PerfStats\StartStat", 0,
- KEY_READ, &hOpen)) == ERROR_SUCCESS) {
- // query to get data size
- if ( (rc = RegQueryValueEx(hOpen,"KERNEL\CPUUsage",NULL,&dwType,
- NULL, &cbData )) == ERROR_SUCCESS) {
- pByte = (LPBYTE)allocmem(cbData);
- rc = RegQueryValueEx(hOpen,"KERNEL\CPUUsage",NULL,&dwType, pByte,
- &cbData );
- freemem(pByte);
- } else
- fSuccess = false;
- RegCloseKey(hOpen);
- } else
- fSuccess = false;
- return fSuccess;
- }
- bool DisableCPUTracking() {
- HKEY hOpen;
- DWORD cbData;
- DWORD dwType;
- LPBYTE pByte;
- DWORD rc;
- bool fSuccess = true;
- if ( (rc = RegOpenKeyEx(HKEY_DYN_DATA,"PerfStats\StopStat", 0,
- KEY_READ, &hOpen)) == ERROR_SUCCESS) {
- // query to get data size
- if ( (rc = RegQueryValueEx(hOpen,"KERNEL\CPUUsage",NULL,&dwType,
- NULL, &cbData )) == ERROR_SUCCESS) {
- pByte = (LPBYTE)allocmem(cbData);
- rc = RegQueryValueEx(hOpen,"KERNEL\CPUUsage",NULL,&dwType, pByte,
- &cbData );
- freemem(pByte);
- } else
- fSuccess = false;
- RegCloseKey(hOpen);
- } else
- fSuccess = false;
- return fSuccess;
- }
- CPUUsageReader::CPUUsageReader() {
- FILETIME ftCreate, ftExit;
- hkeyKernelCPU = NULL;
- fNTMethod = false;
- if (GetProcessTimes(GetCurrentProcess(), &ftCreate, &ftExit, (FILETIME *)&kt_last, (FILETIME *)&ut_last)) {
- // Using Windows NT/2000 method
- GetSystemTimeAsFileTime((FILETIME *)&st_last);
- fNTMethod = true;
- } else {
- // Using Windows 95/98 method
- HKEY hkey;
- if (EnableCPUTracking()) {
- if (ERROR_SUCCESS == RegOpenKeyEx(HKEY_DYN_DATA, "PerfStats\StatData", 0, KEY_READ, &hkey)) {
- hkeyKernelCPU = hkey;
- } else
- DisableCPUTracking();
- }
- }
- }
- CPUUsageReader::~CPUUsageReader() {
- if (hkeyKernelCPU) {
- RegCloseKey(hkeyKernelCPU);
- DisableCPUTracking();
- }
- }
- int CPUUsageReader::read() {
- if (hkeyKernelCPU) {
- DWORD type;
- DWORD dwUsage;
- DWORD size = sizeof dwUsage;
- if (ERROR_SUCCESS == RegQueryValueEx(hkeyKernelCPU, "KERNEL\CPUUsage", 0, &type, (LPBYTE)&dwUsage, (LPDWORD)&size))
- return (int)dwUsage;
- return -1;
- } else if (fNTMethod) {
- FILETIME ftCreate, ftExit;
- unsigned __int64 kt, st, ut;
- int cpu;
- GetProcessTimes(GetCurrentProcess(), &ftCreate, &ftExit, (FILETIME *)&kt, (FILETIME *)&ut);
- GetSystemTimeAsFileTime((FILETIME *)&st);
- if (st == st_last)
- return 100;
- else
- cpu = (int)((100 * (kt + ut - kt_last - ut_last) + (st - st_last)/2) / (st - st_last));
- kt_last = kt;
- ut_last = ut;
- st_last = st;
- return cpu;
- }
- return -1;
- }