mirror of
https://github.com/fastfetch-cli/fastfetch.git
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Brightness (Windows): uses COM-less method to query WMI
Co-authored-by: Copilot <copilot@github.com>
This commit is contained in:
李通洲
+1
-1
@@ -1041,7 +1041,7 @@ elseif(WIN32)
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src/detection/bluetoothradio/bluetoothradio_windows.c
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src/detection/board/board_windows.c
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src/detection/bootmgr/bootmgr_windows.c
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src/detection/brightness/brightness_windows.cpp
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src/detection/brightness/brightness_windows.c
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src/detection/btrfs/btrfs_nosupport.c
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src/detection/chassis/chassis_windows.c
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src/detection/cpu/cpu_windows.c
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@@ -0,0 +1,57 @@
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#pragma once
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#include <windef.h>
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#include <wmistr.h>
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#include <assert.h>
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/**
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* The WmiOpenBlock function opens the WMI data block object for the specified WMI class.
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*
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* \param Guid Specifies the GUID for WMI class.
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* \param DesiredAccess Specifies the desired access rights to the data block object.
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* \param DataBlockHandle Pointer to a memory location where the routine returns a handle to the data block object.
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* \return ULONG Successful or errant status.
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*/
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NTSYSAPI ULONG NTAPI
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WmiOpenBlock(
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_In_ LPCGUID Guid,
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_In_ ACCESS_MASK DesiredAccess,
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_Out_ PHANDLE DataBlockHandle
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);
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/**
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* The WmiQueryAllDataW function returns all WMI data blocks that implement a given WMI class (Unicode).
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*
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* \param DataBlockHandle Handle to a WMI data block object.
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* \param BufferLength Pointer to a memory location that specifies the size of the buffer.
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* \param Buffer Pointer to the buffer where the routine returns the WMI data.
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* \return ULONG Successful or errant status.
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*/
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NTSYSAPI ULONG NTAPI
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WmiQueryAllDataW(
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_In_ HANDLE DataBlockHandle,
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_Inout_ PULONG BufferLength,
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_Out_writes_bytes_opt_(*BufferLength) PVOID Buffer
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);
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/**
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* The WmiCloseBlock function closes a WMI data block object.
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*
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* \param DataBlockHandle Handle to the data block object to be closed.
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* \return ULONG Successful or errant status.
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*/
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NTSYSAPI ULONG NTAPI
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WmiCloseBlock(
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_In_ HANDLE DataBlockHandle
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);
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static inline void ffCloseWmiBlock(HANDLE* hBlock) {
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assert(hBlock);
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if (*hBlock) {
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WmiCloseBlock(*hBlock);
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}
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}
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#define FF_AUTO_CLOSE_WMI_BLOCK __attribute__((cleanup(ffCloseWmiBlock)))
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// MOF: https://github.com/tpn/winsdk-10/blob/master/Include/10.0.16299.0/km/wmicore.mof
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@@ -0,0 +1,227 @@
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#include "brightness.h"
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#include "detection/displayserver/displayserver.h"
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#include "common/debug.h"
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#include "common/library.h"
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#include "common/mallocHelper.h"
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#include "common/windows/wmi.h"
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#include "common/windows/unicode.h"
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#include <inttypes.h>
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#include <winternl.h>
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#include <windows.h>
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NTSYSAPI NTSTATUS WINAPI GetPhysicalMonitors(
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_In_ UNICODE_STRING* pstrDeviceName,
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_In_ DWORD dwPhysicalMonitorArraySize,
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_Out_ DWORD* pdwNumPhysicalMonitorHandlesInArray,
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_Out_ HANDLE* phPhysicalMonitorArray);
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typedef enum _MC_VCP_CODE_TYPE {
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MC_MOMENTARY,
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MC_SET_PARAMETER
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} MC_VCP_CODE_TYPE,
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*LPMC_VCP_CODE_TYPE;
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NTSYSAPI NTSTATUS WINAPI DDCCIGetVCPFeature(
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_In_ HANDLE hMonitor,
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_In_ DWORD dwVCPCode,
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_Out_opt_ LPMC_VCP_CODE_TYPE pvct,
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_Out_ DWORD* pdwCurrentValue,
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_Out_opt_ DWORD* pdwMaximumValue);
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NTSYSAPI NTSTATUS WINAPI DestroyPhysicalMonitorInternal(
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_In_ HANDLE hMonitor);
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NTSTATUS WINAPI GetPhysicalMonitorDescription(
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_In_ HANDLE hMonitor,
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_In_ DWORD dwPhysicalMonitorDescriptionSizeInChars,
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_Out_ LPWSTR szPhysicalMonitorDescription);
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static const char* detectWithWmi(FFlist* result) {
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FF_DEBUG("WMI: start detection");
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// https://github.com/tpn/winsdk-10/blob/master/Include/10.0.16299.0/km/wmicore.mof#L21200
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const GUID WmiMonitorBrightnessGuid = {
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0xd43412ac, 0x67f9, 0x4fbb, { 0xa0, 0x81, 0x17, 0x52, 0xa2, 0xc3, 0x3e, 0x84 }
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};
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FF_AUTO_CLOSE_WMI_BLOCK HANDLE hBlock = NULL;
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ULONG status = WmiOpenBlock(&WmiMonitorBrightnessGuid, WMIGUID_QUERY, &hBlock);
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if (status != 0) {
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FF_DEBUG("WMI: WmiOpenBlock failed, status=%lu, error=%s", status, ffDebugWin32Error(GetLastError()));
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return "WmiOpenBlock() failed";
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}
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ULONG bufferSize = 0;
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status = WmiQueryAllDataW(hBlock, &bufferSize, NULL);
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if (status != ERROR_SUCCESS && status != ERROR_INSUFFICIENT_BUFFER) {
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FF_DEBUG("WMI: first WmiQueryAllDataW failed, status=%lu, bufferSize=%lu, error=%s", status, bufferSize, ffDebugWin32Error(GetLastError()));
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return "WmiQueryAllDataW() failed";
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}
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FF_DEBUG("WMI: initial query status=%lu, bufferSize=%lu", status, bufferSize);
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if (bufferSize == 0) {
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FF_DEBUG("WMI: WmiQueryAllDataW returned empty buffer");
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return "WmiQueryAllDataW() returned no data";
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}
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FF_AUTO_FREE PWNODE_ALL_DATA pAllData = (PWNODE_ALL_DATA) malloc(bufferSize);
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if (!pAllData) {
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FF_DEBUG("WMI: malloc failed, bufferSize=%lu", bufferSize);
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return "malloc() failed";
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}
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status = WmiQueryAllDataW(hBlock, &bufferSize, pAllData);
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if (status != ERROR_SUCCESS) {
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FF_DEBUG("WMI: second WmiQueryAllDataW failed, status=%lu, bufferSize=%lu, error=%s", status, bufferSize, ffDebugWin32Error(GetLastError()));
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return "WmiQueryAllDataW() failed";
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}
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if (bufferSize < sizeof(WNODE_ALL_DATA)) {
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FF_DEBUG("WMI: insufficient buffer for WNODE_ALL_DATA, bufferSize=%lu", bufferSize);
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return "WmiQueryAllDataW() returned insufficient data for WNODE_ALL_DATA";
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}
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FF_DEBUG("WMI: instanceCount=%lu, flags=0x%lX", pAllData->InstanceCount, pAllData->WnodeHeader.Flags);
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PULONG pNameOffsets = (PULONG) ((PUCHAR) pAllData + pAllData->OffsetInstanceNameOffsets);
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for (ULONG i = 0; i < pAllData->InstanceCount; i++) {
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ULONG dataOffset = 0;
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ULONG dataLength = 0;
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if (pAllData->WnodeHeader.Flags & WNODE_FLAG_FIXED_INSTANCE_SIZE) {
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dataLength = pAllData->FixedInstanceSize;
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dataOffset = pAllData->DataBlockOffset + i * dataLength;
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} else {
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dataOffset = pAllData->OffsetInstanceDataAndLength[i].OffsetInstanceData;
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dataLength = pAllData->OffsetInstanceDataAndLength[i].LengthInstanceData;
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}
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if (dataLength == 0 || dataOffset >= bufferSize || dataLength > bufferSize - dataOffset) {
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FF_DEBUG("WMI: skip invalid instance %lu (dataOffset=%lu, dataLength=%lu, bufferSize=%lu)", i, dataOffset, dataLength, bufferSize);
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continue;
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}
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USHORT nameCharsCount = *(PUSHORT) ((PUCHAR) pAllData + pNameOffsets[i]) / sizeof(WCHAR);
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PCWSTR pNameChars = (PCWSTR) ((PUCHAR) pAllData + (pNameOffsets[i] + sizeof(USHORT)));
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PUCHAR pDataBlock = (PUCHAR) pAllData + dataOffset;
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UCHAR currentBrightness = pDataBlock[0];
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FFBrightnessResult* brightness = FF_LIST_ADD(FFBrightnessResult, *result);
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brightness->max = 100;
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brightness->min = 0;
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brightness->current = currentBrightness;
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brightness->builtin = true;
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ffStrbufInitNWS(&brightness->name, nameCharsCount, pNameChars);
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ffStrbufSubstrAfterFirstC(&brightness->name, '\\');
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ffStrbufSubstrBeforeFirstC(&brightness->name, '\\');
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FF_DEBUG("WMI: detected builtin display '%s', current=%u", brightness->name.chars, (unsigned) currentBrightness);
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}
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FF_DEBUG("WMI: finished detection, total results=%u", result->length);
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return NULL;
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}
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static const char* detectWithDdcci(const FFDisplayServerResult* displayServer, FFlist* result) {
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FF_DEBUG("DDC/CI: start detection, displayCount=%u", displayServer->displays.length);
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void* gdi32 = ffLibraryGetModule(L"gdi32.dll");
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if (!gdi32) {
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FF_DEBUG("DDC/CI: failed to load gdi32.dll: %s", ffDebugWin32Error(GetLastError()));
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return "ffLibraryGetModule(gdi32.dll) failed";
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}
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FF_LIBRARY_LOAD_SYMBOL_MESSAGE(gdi32, GetPhysicalMonitors)
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FF_LIBRARY_LOAD_SYMBOL_MESSAGE(gdi32, DDCCIGetVCPFeature)
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FF_LIBRARY_LOAD_SYMBOL_MESSAGE(gdi32, DestroyPhysicalMonitorInternal)
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FF_LIST_FOR_EACH (FFDisplayResult, display, displayServer->displays) {
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if (display->type == FF_DISPLAY_TYPE_BUILTIN) {
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FF_DEBUG("DDC/CI: skip builtin display id=%" PRIu64, display->id);
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continue;
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}
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MONITORINFOEXW mi;
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mi.cbSize = sizeof(mi);
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if (!GetMonitorInfoW((HMONITOR) (uintptr_t) display->id, (LPMONITORINFO) &mi)) {
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FF_DEBUG("DDC/CI: GetMonitorInfoW failed for display id=%" PRIu64 ": %s", display->id, ffDebugWin32Error(GetLastError()));
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continue;
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}
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UNICODE_STRING deviceName = {
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.Length = (USHORT) (wcslen(mi.szDevice) * sizeof(wchar_t)),
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.MaximumLength = 0,
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.Buffer = mi.szDevice,
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};
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HANDLE physicalMonitor;
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DWORD monitorCount = 0;
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NTSTATUS monitorStatus = ffGetPhysicalMonitors(&deviceName, 1, &monitorCount, &physicalMonitor);
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if (NT_SUCCESS(monitorStatus) && monitorCount >= 1) {
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DWORD curr = 0, max = 0;
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if (NT_SUCCESS(ffDDCCIGetVCPFeature(physicalMonitor, 0x10 /* luminance */, NULL, &curr, &max))) {
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FFBrightnessResult* brightness = FF_LIST_ADD(FFBrightnessResult, *result);
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if (display->name.length > 0) {
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ffStrbufInitCopy(&brightness->name, &display->name);
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} else {
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FF_LIBRARY_LOAD_SYMBOL_LAZY(gdi32, GetPhysicalMonitorDescription)
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if (ffGetPhysicalMonitorDescription) {
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wchar_t description[128 /*MUST be PHYSICAL_MONITOR_DESCRIPTION_SIZE*/];
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if (NT_SUCCESS(ffGetPhysicalMonitorDescription(physicalMonitor, ARRAY_SIZE(description), description))) {
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ffStrbufInitWS(&brightness->name, description);
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}
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}
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if (brightness->name.length == 0) {
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ffStrbufSetNWS(&brightness->name, deviceName.Length / 2, deviceName.Buffer);
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}
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}
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brightness->max = max;
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brightness->min = 0;
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brightness->current = curr;
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brightness->builtin = false;
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FF_DEBUG("DDC/CI: detected external display '%s', current=%u, max=%u", brightness->name.chars, (unsigned) curr, (unsigned) max);
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} else {
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FF_DEBUG("DDC/CI: DDCCIGetVCPFeature failed for monitor '%ls': %s", deviceName.Buffer, ffDebugWin32Error(GetLastError()));
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}
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ffDestroyPhysicalMonitorInternal(physicalMonitor);
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} else {
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FF_DEBUG("DDC/CI: GetPhysicalMonitors failed for '%ls', status=0x%08X, monitorCount=%lu, error=%s", deviceName.Buffer, (unsigned) monitorStatus, monitorCount, ffDebugWin32Error(GetLastError()));
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}
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}
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FF_DEBUG("DDC/CI: finished detection, total results=%u", result->length);
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return NULL;
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}
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static bool hasBuiltinDisplay(const FFDisplayServerResult* displayServer) {
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FF_LIST_FOR_EACH (FFDisplayResult, display, displayServer->displays) {
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if (display->type == FF_DISPLAY_TYPE_BUILTIN || display->type == FF_DISPLAY_TYPE_UNKNOWN) {
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return true;
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}
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}
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return false;
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}
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const char* ffDetectBrightness(FF_A_UNUSED FFBrightnessOptions* options, FFlist* result) {
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const FFDisplayServerResult* displayServer = ffConnectDisplayServer();
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FF_DEBUG("start, displayCount=%u", displayServer->displays.length);
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if (hasBuiltinDisplay(displayServer)) {
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FF_DEBUG("builtin display detected, trying WMI");
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detectWithWmi(result);
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}
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if (result->length < displayServer->displays.length) {
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FF_DEBUG("resultCount=%u < displayCount=%u, trying DDC/CI", result->length, displayServer->displays.length);
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detectWithDdcci(displayServer, result);
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}
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FF_DEBUG("finished, resultCount=%u", result->length);
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return NULL;
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}
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@@ -1,140 +0,0 @@
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extern "C" {
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#include "brightness.h"
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#include "detection/displayserver/displayserver.h"
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#include "common/library.h"
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}
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#include "common/windows/wmi.hpp"
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#include "common/windows/unicode.hpp"
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#include <winternl.h>
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NTSYSAPI NTSTATUS WINAPI GetPhysicalMonitors(
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_In_ UNICODE_STRING* pstrDeviceName,
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_In_ DWORD dwPhysicalMonitorArraySize,
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_Out_ DWORD* pdwNumPhysicalMonitorHandlesInArray,
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_Out_ HANDLE* phPhysicalMonitorArray);
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typedef enum _MC_VCP_CODE_TYPE {
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MC_MOMENTARY,
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MC_SET_PARAMETER
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} MC_VCP_CODE_TYPE,
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*LPMC_VCP_CODE_TYPE;
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NTSYSAPI NTSTATUS WINAPI DDCCIGetVCPFeature(
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_In_ HANDLE hMonitor,
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_In_ DWORD dwVCPCode,
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_Out_opt_ LPMC_VCP_CODE_TYPE pvct,
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_Out_ DWORD* pdwCurrentValue,
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_Out_opt_ DWORD* pdwMaximumValue);
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NTSYSAPI NTSTATUS WINAPI DestroyPhysicalMonitorInternal(
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_In_ HANDLE hMonitor);
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NTSTATUS WINAPI GetPhysicalMonitorDescription(
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_In_ HANDLE hMonitor,
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_In_ DWORD dwPhysicalMonitorDescriptionSizeInChars,
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_Out_ LPWSTR szPhysicalMonitorDescription);
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static const char* detectWithWmi(FFlist* result) {
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FFWmiQuery query(L"SELECT CurrentBrightness, InstanceName FROM WmiMonitorBrightness WHERE Active = true", nullptr, FFWmiNamespace::WMI);
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if (!query) {
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return "Query WMI service failed";
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}
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while (FFWmiRecord record = query.next()) {
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if (FFWmiVariant vtValue = record.get(L"CurrentBrightness")) {
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FFBrightnessResult* brightness = FF_LIST_ADD(FFBrightnessResult, *result);
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brightness->max = 100;
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brightness->min = 0;
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brightness->current = vtValue.get<uint8_t>();
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brightness->builtin = true;
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ffStrbufInit(&brightness->name);
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if (FFWmiVariant vtName = record.get(L"InstanceName")) {
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ffStrbufSetWSV(&brightness->name, vtName.get<std::wstring_view>());
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ffStrbufSubstrAfterFirstC(&brightness->name, '\\');
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ffStrbufSubstrBeforeFirstC(&brightness->name, '\\');
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}
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}
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}
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return NULL;
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}
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static const char* detectWithDdcci(const FFDisplayServerResult* displayServer, FFlist* result) {
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void* gdi32 = ffLibraryGetModule(L"gdi32.dll");
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if (!gdi32) {
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return "ffLibraryGetModule(gdi32.dll) failed";
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}
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FF_LIBRARY_LOAD_SYMBOL_MESSAGE(gdi32, GetPhysicalMonitors)
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FF_LIBRARY_LOAD_SYMBOL_MESSAGE(gdi32, DDCCIGetVCPFeature)
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FF_LIBRARY_LOAD_SYMBOL_MESSAGE(gdi32, DestroyPhysicalMonitorInternal)
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FF_LIST_FOR_EACH (FFDisplayResult, display, displayServer->displays) {
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if (display->type == FF_DISPLAY_TYPE_BUILTIN) {
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continue;
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}
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MONITORINFOEXW mi;
|
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mi.cbSize = sizeof(mi);
|
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if (!GetMonitorInfoW((HMONITOR) (uintptr_t) display->id, (LPMONITORINFO) &mi)) {
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continue;
|
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}
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UNICODE_STRING deviceName = {
|
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.Length = (USHORT) (wcslen(mi.szDevice) * sizeof(wchar_t)),
|
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.MaximumLength = 0,
|
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.Buffer = mi.szDevice,
|
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};
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HANDLE physicalMonitor;
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DWORD monitorCount = 0;
|
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if (NT_SUCCESS(ffGetPhysicalMonitors(&deviceName, 1, &monitorCount, &physicalMonitor)) && monitorCount >= 1) {
|
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DWORD curr = 0, max = 0;
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if (NT_SUCCESS(ffDDCCIGetVCPFeature(physicalMonitor, 0x10 /* luminance */, NULL, &curr, &max))) {
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FFBrightnessResult* brightness = FF_LIST_ADD(FFBrightnessResult, *result);
|
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if (display->name.length > 0) {
|
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ffStrbufInitCopy(&brightness->name, &display->name);
|
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} else {
|
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FF_LIBRARY_LOAD_SYMBOL_LAZY(gdi32, GetPhysicalMonitorDescription)
|
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if (ffGetPhysicalMonitorDescription) {
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wchar_t description[128 /*MUST be PHYSICAL_MONITOR_DESCRIPTION_SIZE*/];
|
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if (NT_SUCCESS(ffGetPhysicalMonitorDescription(physicalMonitor, ARRAY_SIZE(description), description))) {
|
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ffStrbufInitWS(&brightness->name, description);
|
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}
|
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}
|
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if (brightness->name.length == 0) {
|
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ffStrbufSetNWS(&brightness->name, deviceName.Length / 2, deviceName.Buffer);
|
||||
}
|
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}
|
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brightness->max = max;
|
||||
brightness->min = 0;
|
||||
brightness->current = curr;
|
||||
brightness->builtin = false;
|
||||
}
|
||||
|
||||
ffDestroyPhysicalMonitorInternal(physicalMonitor);
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static bool hasBuiltinDisplay(const FFDisplayServerResult* displayServer) {
|
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FF_LIST_FOR_EACH (FFDisplayResult, display, displayServer->displays) {
|
||||
if (display->type == FF_DISPLAY_TYPE_BUILTIN || display->type == FF_DISPLAY_TYPE_UNKNOWN) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
extern "C" const char* ffDetectBrightness(FF_A_UNUSED FFBrightnessOptions* options, FFlist* result) {
|
||||
const FFDisplayServerResult* displayServer = ffConnectDisplayServer();
|
||||
|
||||
if (hasBuiltinDisplay(displayServer)) {
|
||||
detectWithWmi(result);
|
||||
}
|
||||
|
||||
if (result->length < displayServer->displays.length) {
|
||||
detectWithDdcci(displayServer, result);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
Reference in New Issue
Block a user