feat(gpu-info): display GPU fan speed alongside temperature

Add support for reading and printing GPU fan speed (RPM) every 10 seconds together with temperature.

Author: kh4f

main.go

@@ -7,12 +7,20 @@ type ADLTemperature struct {
 	Temperature int32
 }
 
+type ADLFanSpeedValue struct {
+	Size  int32
+	SpeedType int32
+	FanSpeed int32
+	Flags int32
+}
+
 var (
 	dll = w.NewLazySystemDLL("atiadlxx.dll")
 	ADL_Main_Control_Create = dll.NewProc("ADL_Main_Control_Create").Call
 	ADL_Main_Control_Destroy = dll.NewProc("ADL_Main_Control_Destroy").Call
 	ADL_Adapter_NumberOfAdapters_Get = dll.NewProc("ADL_Adapter_NumberOfAdapters_Get").Call
 	ADL_Overdrive5_Temperature_Get = dll.NewProc("ADL_Overdrive5_Temperature_Get").Call
+	ADL_Overdrive5_FanSpeed_Get = dll.NewProc("ADL_Overdrive5_FanSpeed_Get").Call
 )
 
 func main() {
@@ -29,13 +37,14 @@ func main() {
 	fmt.Println("Adapters found:", adapters)
 
 	temp := ADLTemperature{Size: int32(unsafe.Sizeof(ADLTemperature{}))}
+	fan := ADLFanSpeedValue{Size: int32(unsafe.Sizeof(ADLFanSpeedValue{}))}
+
 	for {
-		r, _, _ := ADL_Overdrive5_Temperature_Get(0, 0, uintptr(unsafe.Pointer(&temp)))
-		if r == 0 {
-			fmt.Printf("GPU Temperature: %d°C\n", temp.Temperature/1000)
-		} else {
-			fmt.Println("Temperature read failed")
-		}
+		ADL_Overdrive5_Temperature_Get(0, 0, uintptr(unsafe.Pointer(&temp)))
+		fmt.Printf("GPU Temperature: %d °C\n", temp.Temperature/1000)
+
+		ADL_Overdrive5_FanSpeed_Get(0, 0, uintptr(unsafe.Pointer(&fan)))
+		fmt.Printf("GPU Fan: %d RPM\n", fan.FanSpeed)
 
 		time.Sleep(10 * time.Second)
 	}