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[WIN32SS] Change LDEVOBJ_bProbeAndCaptureDevmode to load missing settings from registry
- use EngpGetDisplayDriverParameters to get display settings from registry - update searched display settings with the provided ones (+ add missing SEH2) - then, search exact mode User can now change only one display setting, without specifying other ones.
This commit is contained in:
Hervé Poussineau
parent
9acd895f18
commit
588285881e
@ -710,54 +710,111 @@ LDEVOBJ_bProbeAndCaptureDevmode(
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_Out_ PDEVMODEW *pSelectedMode,
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_In_ BOOL bSearchClosestMode)
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{
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DEVMODEW dmSearch;
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PDEVMODEW pdmCurrent, pdm, pdmSelected = NULL;
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ULONG i;
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DWORD dwFields;
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ULONG ulVirtualWidth = 0, ulVirtualHeight = 0;
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BOOL bResult = TRUE;
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NTSTATUS Status;
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if (!LDEVOBJ_bBuildDevmodeList(pGraphicsDevice))
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return FALSE;
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/* At first, load information from registry */
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RtlZeroMemory(&dmSearch, sizeof(dmSearch));
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Status = EngpGetDisplayDriverParameters(pGraphicsDevice, &dmSearch, NULL);
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if (!NT_SUCCESS(Status))
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{
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ERR("EngpGetDisplayDriverParameters() failed with status 0x%08x\n", Status);
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return FALSE;
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}
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/* Override values with the new ones provided */
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_SEH2_TRY
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{
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bSearchClosestMode |= RequestedMode->dmFields == 0;
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/* Copy standard fields (if provided) */
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if (RequestedMode->dmFields & DM_BITSPERPEL && RequestedMode->dmBitsPerPel != 0)
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dmSearch.dmBitsPerPel = RequestedMode->dmBitsPerPel;
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if (RequestedMode->dmFields & DM_PELSWIDTH && RequestedMode->dmPelsWidth != 0)
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dmSearch.dmPelsWidth = RequestedMode->dmPelsWidth;
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if (RequestedMode->dmFields & DM_PELSHEIGHT && RequestedMode->dmPelsHeight != 0)
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dmSearch.dmPelsHeight = RequestedMode->dmPelsHeight;
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if (RequestedMode->dmFields & DM_DISPLAYFREQUENCY && RequestedMode->dmDisplayFrequency != 0)
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dmSearch.dmDisplayFrequency = RequestedMode->dmDisplayFrequency;
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if ((RequestedMode->dmFields & (DM_PANNINGWIDTH | DM_PANNINGHEIGHT)) == (DM_PANNINGWIDTH | DM_PANNINGHEIGHT) &&
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RequestedMode->dmPanningWidth != 0 && RequestedMode->dmPanningHeight != 0 &&
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RequestedMode->dmPanningWidth < dmSearch.dmPelsWidth &&
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RequestedMode->dmPanningHeight < dmSearch.dmPelsHeight)
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{
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/* Get new panning values */
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ulVirtualWidth = RequestedMode->dmPelsWidth;
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ulVirtualHeight = RequestedMode->dmPelsHeight;
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dmSearch.dmPelsWidth = RequestedMode->dmPanningWidth;
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dmSearch.dmPelsHeight = RequestedMode->dmPanningHeight;
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}
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else if (dmSearch.dmPanningWidth != 0 && dmSearch.dmPanningHeight != 0 &&
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dmSearch.dmPanningWidth < dmSearch.dmPelsWidth &&
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dmSearch.dmPanningHeight < dmSearch.dmPelsHeight)
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{
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/* Keep existing panning values */
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ulVirtualWidth = dmSearch.dmPelsWidth;
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ulVirtualHeight = dmSearch.dmPelsHeight;
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dmSearch.dmPelsWidth = dmSearch.dmPanningWidth;
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dmSearch.dmPelsHeight = dmSearch.dmPanningHeight;
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}
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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bResult = FALSE;
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}
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_SEH2_END;
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if (!bResult)
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return FALSE;
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if (bSearchClosestMode)
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{
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/* Search the closest mode */
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if (!LDEVOBJ_bGetClosestMode(pGraphicsDevice, RequestedMode, &pdmSelected))
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return FALSE;
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ASSERT(pdmSelected);
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if (LDEVOBJ_bGetClosestMode(pGraphicsDevice, &dmSearch, &pdmSelected))
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{
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/* Ok, found a closest mode. Update search */
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dmSearch.dmBitsPerPel = pdmSelected->dmBitsPerPel;
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dmSearch.dmPelsWidth = pdmSelected->dmPelsWidth;
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dmSearch.dmPelsHeight = pdmSelected->dmPelsHeight;
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dmSearch.dmDisplayFrequency = pdmSelected->dmDisplayFrequency;
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}
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}
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else
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/* Now, search the exact mode to return to caller */
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for (i = 0; i < pGraphicsDevice->cDevModes; i++)
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{
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/* Search if requested mode exists */
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for (i = 0; i < pGraphicsDevice->cDevModes; i++)
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{
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pdmCurrent = pGraphicsDevice->pDevModeList[i].pdm;
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pdmCurrent = pGraphicsDevice->pDevModeList[i].pdm;
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/* Compare asked DEVMODE fields
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* Only compare those that are valid in both DEVMODE structs */
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dwFields = pdmCurrent->dmFields & RequestedMode->dmFields;
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/* For now, we only need those */
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if (pdmCurrent->dmBitsPerPel != dmSearch.dmBitsPerPel)
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continue;
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if (pdmCurrent->dmPelsWidth != dmSearch.dmPelsWidth)
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continue;
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if (pdmCurrent->dmPelsHeight != dmSearch.dmPelsHeight)
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continue;
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if (pdmCurrent->dmDisplayFrequency != dmSearch.dmDisplayFrequency)
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continue;
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/* For now, we only need those */
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if ((dwFields & DM_BITSPERPEL) &&
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(pdmCurrent->dmBitsPerPel != RequestedMode->dmBitsPerPel)) continue;
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if ((dwFields & DM_PELSWIDTH) &&
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(pdmCurrent->dmPelsWidth != RequestedMode->dmPelsWidth)) continue;
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if ((dwFields & DM_PELSHEIGHT) &&
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(pdmCurrent->dmPelsHeight != RequestedMode->dmPelsHeight)) continue;
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if ((dwFields & DM_DISPLAYFREQUENCY) &&
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(pdmCurrent->dmDisplayFrequency != RequestedMode->dmDisplayFrequency)) continue;
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pdmSelected = pdmCurrent;
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break;
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}
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pdmSelected = pdmCurrent;
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break;
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}
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if (!pdmSelected)
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{
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WARN("Requested mode not found (%dx%dx%d %d Hz)\n",
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RequestedMode->dmFields & DM_PELSWIDTH ? RequestedMode->dmPelsWidth : 0,
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RequestedMode->dmFields & DM_PELSHEIGHT ? RequestedMode->dmPelsHeight : 0,
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RequestedMode->dmFields & DM_BITSPERPEL ? RequestedMode->dmBitsPerPel : 0,
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RequestedMode->dmFields & DM_DISPLAYFREQUENCY ? RequestedMode->dmDisplayFrequency : 0);
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return FALSE;
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}
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if (!pdmSelected)
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{
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ERR("Requested mode not found (%dx%dx%d %d Hz)\n",
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dmSearch.dmPelsWidth,
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dmSearch.dmPelsHeight,
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dmSearch.dmBitsPerPel,
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dmSearch.dmDisplayFrequency);
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return FALSE;
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}
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/* Allocate memory for output */
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@ -771,6 +828,18 @@ LDEVOBJ_bProbeAndCaptureDevmode(
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(PVOID)((ULONG_PTR)pdmSelected + pdmSelected->dmSize),
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pdmSelected->dmDriverExtra);
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/* Add back panning */
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if (ulVirtualWidth != 0 && ulVirtualHeight != 0 &&
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pdm->dmPelsWidth < ulVirtualWidth &&
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pdm->dmPelsHeight < ulVirtualHeight)
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{
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pdm->dmFields |= DM_PANNINGWIDTH | DM_PANNINGHEIGHT;
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pdm->dmPanningWidth = pdm->dmPelsWidth;
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pdm->dmPanningHeight = pdm->dmPelsHeight;
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pdm->dmPelsWidth = ulVirtualWidth;
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pdm->dmPelsHeight = ulVirtualHeight;
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}
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*pSelectedMode = pdm;
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return TRUE;
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}
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@ -99,62 +99,10 @@ MDEVOBJ_Create(
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if (!pdm)
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{
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/* No settings requested. Read default settings from registry to dmDefault */
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HKEY hKey;
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WCHAR DeviceKey[128];
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ULONG cbSize;
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NTSTATUS Status;
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DWORD dwValue;
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/* No settings requested. Provide nothing and LDEVOBJ_bProbeAndCaptureDevmode
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* will read default settings from registry */
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RtlZeroMemory(&dmDefault, sizeof(dmDefault));
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dmDefault.dmSize = sizeof(dmDefault);
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Status = RegOpenKey(L"\\Registry\\Machine\\HARDWARE\\DEVICEMAP\\VIDEO", &hKey);
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if (!NT_SUCCESS(Status))
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{
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/* Ignore this device and continue */
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ERR("Failed to open VIDEO key: status 0x%08x\n", Status);
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continue;
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}
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cbSize = sizeof(DeviceKey);
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Status = RegQueryValue(hKey,
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pGraphicsDevice->szNtDeviceName,
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REG_SZ,
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DeviceKey,
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&cbSize);
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ZwClose(hKey);
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if (!NT_SUCCESS(Status))
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{
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/* Ignore this device and continue */
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ERR("Failed to open get device key for '%S': status 0x%08x\n", pGraphicsDevice->szNtDeviceName, Status);
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continue;
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}
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Status = RegOpenKey(DeviceKey, &hKey);
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if (!NT_SUCCESS(Status))
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{
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/* Ignore this device and continue */
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ERR("Failed to open open device key '%S' for '%S': status 0x%08x\n", DeviceKey, pGraphicsDevice->szNtDeviceName, Status);
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continue;
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}
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#define READ(field, str, flag) \
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if (RegReadDWORD(hKey, L##str, &dwValue)) \
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{ \
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dmDefault.field = dwValue; \
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dmDefault.dmFields |= flag; \
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}
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READ(dmBitsPerPel, "DefaultSettings.BitsPerPel", DM_BITSPERPEL);
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READ(dmPelsWidth, "DefaultSettings.XResolution", DM_PELSWIDTH);
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READ(dmPelsHeight, "DefaultSettings.YResolution", DM_PELSHEIGHT);
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READ(dmDisplayFlags, "DefaultSettings.Flags", DM_DISPLAYFLAGS);
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READ(dmDisplayFrequency, "DefaultSettings.VRefresh", DM_DISPLAYFREQUENCY);
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READ(dmPanningWidth, "DefaultSettings.XPanning", DM_PANNINGWIDTH);
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READ(dmPanningHeight, "DefaultSettings.YPanning", DM_PANNINGHEIGHT);
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READ(dmDisplayOrientation, "DefaultSettings.Orientation", DM_DISPLAYORIENTATION);
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READ(dmDisplayFixedOutput, "DefaultSettings.FixedOutput", DM_DISPLAYFIXEDOUTPUT);
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READ(dmPosition.x, "Attach.RelativeX", DM_POSITION);
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READ(dmPosition.y, "Attach.RelativeY", DM_POSITION);
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RegReadDWORD(hKey, L"Acceleration.Level", &dwAccelerationLevel);
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ZwClose(hKey);
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}
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/* Get or create a PDEV for these settings */
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