391 lines
8.6 KiB
C++
391 lines
8.6 KiB
C++
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// File: vidwiz.cpp
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#include "precomp.h"
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#include "dcap.h"
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#include "vidinout.h"
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#include "vidwiz.h"
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#include "confcpl.h"
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static HINSTANCE g_hDcapLib;
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typedef int (WINAPI *GNCD)();
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typedef BOOL (WINAPI *FFCD)(FINDCAPTUREDEVICE*, char *);
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typedef BOOL (WINAPI *FFCDBI)(FINDCAPTUREDEVICE*, int);
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// implementations in DCAP32.DLL
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static FFCD DLL_FindFirstCaptureDevice = NULL;
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static FFCDBI DLL_FindFirstCaptureDeviceByIndex = NULL;
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static GNCD DLL_GetNumCaptureDevices = NULL;
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// Defined in wizard.cpp
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extern UINT_PTR GetPageBeforeVideoWiz();
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extern UINT_PTR GetPageAfterVideo();
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// index number of the user's selection on the combo box
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static int g_nCurrentSelection = 0;
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// set to true only if the user hit's back or next
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static BOOL g_bCurrentValid = FALSE;
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// was the user prompted to select a video device
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static BOOL g_bPrompted = FALSE;
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static char *BuildCaptureDeviceInfoString(FINDCAPTUREDEVICE *pCaptureDeviceInfo, char *szOut);
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BOOL InitVidWiz()
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{
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// initialize locals
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g_hDcapLib = NULL;
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DLL_FindFirstCaptureDevice = NULL;
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DLL_FindFirstCaptureDeviceByIndex = NULL;
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DLL_GetNumCaptureDevices = NULL;
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g_nCurrentSelection = 0;
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g_bCurrentValid = FALSE;
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g_bPrompted = FALSE;
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g_hDcapLib = NmLoadLibrary("dcap32.dll");
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if (g_hDcapLib == NULL)
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return FALSE;
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DLL_FindFirstCaptureDevice = (FFCD)GetProcAddress(g_hDcapLib, "FindFirstCaptureDevice");
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DLL_FindFirstCaptureDeviceByIndex = (FFCDBI)GetProcAddress(g_hDcapLib, "FindFirstCaptureDeviceByIndex");
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DLL_GetNumCaptureDevices = (GNCD)GetProcAddress(g_hDcapLib, "GetNumCaptureDevices");
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return TRUE;
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}
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// returns TRUE if the capture device id in the registry corresponds with
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// the driver description string.
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static BOOL IsVideoRegistryValid()
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{
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RegEntry re(VIDEO_KEY);
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char szDriverDesc[200];
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char *szDriverDescReg;
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int numVideoDevices, nID;
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FINDCAPTUREDEVICE CaptureDeviceInfo;
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BOOL fRet;
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// just in case InitVidWiz wasn't called
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if (NULL == g_hDcapLib)
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return FALSE;
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numVideoDevices = DLL_GetNumCaptureDevices();
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nID = re.GetNumber(REGVAL_CAPTUREDEVICEID, -1);
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szDriverDescReg = re.GetString(REGVAL_CAPTUREDEVICENAME);
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// no video devices and no registry entry is valid
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if ((numVideoDevices == 0) && (nID == -1))
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{
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return TRUE;
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}
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if ((numVideoDevices == 0) && (nID != -1))
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{
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return FALSE;
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}
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// TRUE == (numVideoDevice >= 1)
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// installed video devices but no registry entry is invalid
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if (nID == -1)
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{
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return FALSE;
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}
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CaptureDeviceInfo.dwSize = sizeof(FINDCAPTUREDEVICE);
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fRet = DLL_FindFirstCaptureDeviceByIndex(&CaptureDeviceInfo, nID);
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if (fRet == FALSE)
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{
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return FALSE;
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}
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BuildCaptureDeviceInfoString(&CaptureDeviceInfo, szDriverDesc);
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if (0 == lstrcmp(szDriverDescReg, szDriverDesc))
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{
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return TRUE;
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}
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return FALSE;
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}
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BOOL UnInitVidWiz()
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{
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if (g_hDcapLib)
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FreeLibrary(g_hDcapLib);
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g_hDcapLib = NULL;
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return TRUE;
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}
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static char *BuildCaptureDeviceInfoString(FINDCAPTUREDEVICE *pCaptureDeviceInfo, char *szOut)
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{
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if (pCaptureDeviceInfo->szDeviceDescription[0] != '\0')
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{
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lstrcpy(szOut, pCaptureDeviceInfo->szDeviceDescription);
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}
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else
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{
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lstrcpy(szOut, pCaptureDeviceInfo->szDeviceName);
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}
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if (pCaptureDeviceInfo->szDeviceVersion[0] != '\0')
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{
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lstrcat(szOut, _T(", "));
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lstrcat(szOut, pCaptureDeviceInfo->szDeviceVersion);
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}
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return szOut;
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}
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void UpdateVidConfigRegistry()
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{
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FINDCAPTUREDEVICE CaptureDeviceInfo, *CaptureDevTable;
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RegEntry re(VIDEO_KEY);
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BOOL bRet;
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char strNameDesc[MAX_CAPDEV_NAME+MAX_CAPDEV_VERSION];
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int numVideoDevices, index, enum_index;
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// just in case InitVidWiz wasn't called
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if (NULL == g_hDcapLib)
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return;
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numVideoDevices = DLL_GetNumCaptureDevices();
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// no devices - delete the registry entries
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if (numVideoDevices == 0)
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{
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re.DeleteValue(REGVAL_CAPTUREDEVICEID);
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re.DeleteValue(REGVAL_CAPTUREDEVICENAME);
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return;
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}
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// build a table of all the devices
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CaptureDevTable = (FINDCAPTUREDEVICE *)LocalAlloc(LPTR, numVideoDevices*sizeof(FINDCAPTUREDEVICE));
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if (NULL == CaptureDevTable)
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{
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ERROR_OUT(("UpdateVidConfigRegistry: Out of memory"));
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return;
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}
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index = 0;
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for (enum_index=0; enum_index < MAXVIDEODRIVERS; enum_index++)
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{
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CaptureDevTable[index].dwSize = sizeof(FINDCAPTUREDEVICE);
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bRet = DLL_FindFirstCaptureDeviceByIndex(&CaptureDevTable[index], enum_index);
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if (bRet == TRUE)
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index++;
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if (index == numVideoDevices)
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break;
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}
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if (index != numVideoDevices)
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{
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ERROR_OUT(("UpdateVidConfigReg: Device Enumeration Failure"));
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LocalFree(CaptureDevTable);
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return;
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}
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// if only one capture device:
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// don't bother to see if the previous entry was valid
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// just update the registry with the current default
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if (numVideoDevices == 1)
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{
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BuildCaptureDeviceInfoString(&CaptureDevTable[0], strNameDesc);
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re.SetValue(REGVAL_CAPTUREDEVICEID, CaptureDevTable[0].nDeviceIndex);
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re.SetValue(REGVAL_CAPTUREDEVICENAME, strNameDesc);
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LocalFree(CaptureDevTable);
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return;
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}
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// TRUE == (numVideoDevices >= 2)
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// user wasn't prompted - he must of had a valid registry to start with
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if (g_bPrompted == FALSE)
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{
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LocalFree(CaptureDevTable);
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return;
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}
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// the user pressed CANCEL during setup
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if (g_bCurrentValid == FALSE)
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{
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if (IsVideoRegistryValid() == TRUE)
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{
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LocalFree(CaptureDevTable);
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return;
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}
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else
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g_nCurrentSelection = 0;
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}
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CaptureDeviceInfo = CaptureDevTable[g_nCurrentSelection];
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BuildCaptureDeviceInfoString(&CaptureDeviceInfo, strNameDesc);
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re.SetValue(REGVAL_CAPTUREDEVICEID, CaptureDeviceInfo.nDeviceIndex);
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re.SetValue(REGVAL_CAPTUREDEVICENAME, strNameDesc);
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LocalFree(CaptureDevTable);
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return;
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}
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// if <= 1 video capture device, return false
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// if 2 or more video devices and the Wizard is in force mode, return true
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// if 2 or more video devices and a MATCHING registry entry, return false
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// otherwise something is fishy - return true
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BOOL NeedVideoPropPage(BOOL fForce)
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{
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// just in case InitVidWiz wasn't called
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if (NULL == g_hDcapLib)
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return FALSE;
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// check the system policies for sending video
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if (_Module.IsSDKCallerRTC() || SysPol::NoVideoSend())
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{
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WARNING_OUT(("Video is disabled by system policies key\r\n"));
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return FALSE;
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}
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// count how many devices we have
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int numCaptureDevices = DLL_GetNumCaptureDevices();
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if (numCaptureDevices <= 1)
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{
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return FALSE;
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}
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// TRUE == (numCaptureDevice >= 2)
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if (fForce)
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{
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g_bPrompted = TRUE;
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return TRUE;
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}
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if (IsVideoRegistryValid() == TRUE)
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{
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return FALSE;
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}
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g_bPrompted = TRUE;
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return TRUE;
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}
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// Message handler for property page
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INT_PTR APIENTRY VidWizDlg(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
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{
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HWND hwndCB; // handle to the dialog box
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int index;
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char szDriverNameDesc[MAX_CAPDEV_NAME+MAX_CAPDEV_VERSION];
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static LONG_PTR button_mask;
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FINDCAPTUREDEVICE CaptureDeviceInfo;
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hwndCB = GetDlgItem(hDlg, IDC_VWCOMBO);
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switch(message)
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{
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case(WM_INITDIALOG) :
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button_mask = ((PROPSHEETPAGE *)lParam)->lParam;
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if (g_hDcapLib == NULL) break;
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for (index = 0; index < MAXVIDEODRIVERS; index++)
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{
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CaptureDeviceInfo.dwSize = sizeof(FINDCAPTUREDEVICE);
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if (DLL_FindFirstCaptureDeviceByIndex(&CaptureDeviceInfo, index))
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{
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BuildCaptureDeviceInfoString(&CaptureDeviceInfo, szDriverNameDesc);
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ComboBox_AddString(hwndCB, szDriverNameDesc);
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}
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}
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ComboBox_SetCurSel(hwndCB, g_nCurrentSelection);
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break;
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case(WM_NOTIFY) :
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switch (((NMHDR *)lParam)->code)
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{
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case PSN_WIZBACK:
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{
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UINT_PTR iPrev = GetPageBeforeVideoWiz();
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ASSERT( iPrev );
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::SetWindowLongPtr(hDlg, DWLP_MSGRESULT, iPrev);
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g_bCurrentValid = TRUE;
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return TRUE;
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}
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case PSN_WIZNEXT:
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{
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UINT_PTR iNext = GetPageAfterVideo();
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ASSERT( iNext );
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::SetWindowLongPtr(hDlg, DWLP_MSGRESULT, iNext);
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g_bCurrentValid = TRUE;
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return TRUE;
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}
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case PSN_WIZFINISH:
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case PSN_KILLACTIVE:
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SetWindowLongPtr(hDlg, DWLP_MSGRESULT, FALSE);
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g_bCurrentValid = TRUE;
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break;
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case PSN_SETACTIVE:
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if (g_fSilentWizard)
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{
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PropSheet_PressButton(GetParent(hDlg), (button_mask & PSWIZB_NEXT) ? PSBTN_NEXT : PSBTN_FINISH);
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}
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else
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{
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PropSheet_SetWizButtons(GetParent(hDlg), button_mask);
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}
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break;
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case PSN_RESET:
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// psn_reset get's received even if user presses
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// cancel on another dialog.
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g_bCurrentValid = FALSE;
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break;
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default:
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return FALSE;
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}
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break;
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// combox box messages get sent here.
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// only one we need is when the user selects something
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case(WM_COMMAND) :
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if (HIWORD(wParam) == CBN_SELCHANGE)
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{
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g_nCurrentSelection = ComboBox_GetCurSel(hwndCB);
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break;
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}
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else
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{
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return FALSE;
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}
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break;
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default:
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return FALSE;
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}
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|||
|
|
return TRUE;
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|