Hardware/Nvidia/NvidiaGPU.cs
author moel.mich
Sun, 06 Jun 2010 11:07:57 +0000
changeset 134 8b3b9b2e28e5
parent 110 411b72b73d8f
child 140 04a5155c9c1a
permissions -rw-r--r--
Fixed Issue 69.
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/*
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  Version: MPL 1.1/GPL 2.0/LGPL 2.1
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  The contents of this file are subject to the Mozilla Public License Version
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  1.1 (the "License"); you may not use this file except in compliance with
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  the License. You may obtain a copy of the License at
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  http://www.mozilla.org/MPL/
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  Software distributed under the License is distributed on an "AS IS" basis,
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  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  for the specific language governing rights and limitations under the License.
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  The Original Code is the Open Hardware Monitor code.
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  The Initial Developer of the Original Code is 
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  Michael Möller <m.moeller@gmx.ch>.
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  Portions created by the Initial Developer are Copyright (C) 2009-2010
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  the Initial Developer. All Rights Reserved.
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  Contributor(s):
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  Alternatively, the contents of this file may be used under the terms of
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  either the GNU General Public License Version 2 or later (the "GPL"), or
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  the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  in which case the provisions of the GPL or the LGPL are applicable instead
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  of those above. If you wish to allow use of your version of this file only
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  under the terms of either the GPL or the LGPL, and not to allow others to
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  use your version of this file under the terms of the MPL, indicate your
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  decision by deleting the provisions above and replace them with the notice
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  and other provisions required by the GPL or the LGPL. If you do not delete
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  the provisions above, a recipient may use your version of this file under
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  the terms of any one of the MPL, the GPL or the LGPL.
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*/
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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namespace OpenHardwareMonitor.Hardware.Nvidia {
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  public class NvidiaGPU : Hardware, IHardware {
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    private string name;
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    private Image icon;
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    private int adapterIndex;
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    private NvPhysicalGpuHandle handle;
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    private Sensor[] temperatures;
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    private Sensor fan = null;
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    public NvidiaGPU(int adapterIndex, NvPhysicalGpuHandle handle) {
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      string gpuName;
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      if (NVAPI.NvAPI_GPU_GetFullName(handle, out gpuName) == NvStatus.OK) {
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        this.name = "NVIDIA " + gpuName.Trim();
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      } else {
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        this.name = "NVIDIA";
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      }
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      this.icon = Utilities.EmbeddedResources.GetImage("nvidia.png");
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      this.adapterIndex = adapterIndex;
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      this.handle = handle;
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      NvGPUThermalSettings settings = GetThermalSettings();
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      temperatures = new Sensor[settings.Count];
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      for (int i = 0; i < temperatures.Length; i++) {
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        NvSensor sensor = settings.Sensor[i];
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        string name;
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        switch (sensor.Target) {
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          case NvThermalTarget.BOARD: name = "GPU Board"; break;
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          case NvThermalTarget.GPU: name = "GPU Core"; break;
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          case NvThermalTarget.MEMORY: name = "GPU Memory"; break;
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          case NvThermalTarget.POWER_SUPPLY: name = "GPU Power Supply"; break;
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          case NvThermalTarget.UNKNOWN: name = "GPU Unknown"; break;
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          default: name = "GPU"; break;
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        }
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        temperatures[i] = new Sensor(name, i, SensorType.Temperature, this, 
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          new ParameterDescription[0]);
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        ActivateSensor(temperatures[i]);
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      }
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      int value;
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      if (NVAPI.NvAPI_GPU_GetTachReading != null &&
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        NVAPI.NvAPI_GPU_GetTachReading(handle, out value) == NvStatus.OK) {
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        if (value > 0) {
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          fan = new Sensor("GPU", 0, SensorType.Fan, this);
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          ActivateSensor(fan);
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        }
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      }
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    }
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    public override string Name {
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      get { return name; }
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    }
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    public override Identifier Identifier {
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      get { return new Identifier("nvidiagpu", adapterIndex.ToString()); }
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    }
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    public override Image Icon {
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      get { return icon; }
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    }
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    private NvGPUThermalSettings GetThermalSettings() {
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      NvGPUThermalSettings settings = new NvGPUThermalSettings();
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      settings.Version = NVAPI.GPU_THERMAL_SETTINGS_VER;
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      settings.Count = NVAPI.MAX_THERMAL_SENSORS_PER_GPU;
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      settings.Sensor = new NvSensor[NVAPI.MAX_THERMAL_SENSORS_PER_GPU];
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      if (NVAPI.NvAPI_GPU_GetThermalSettings(handle, (int)NvThermalTarget.ALL,
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        ref settings) != NvStatus.OK) {
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        settings.Count = 0;        
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      }
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      return settings;
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    }
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    public override void Update() {
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      NvGPUThermalSettings settings = GetThermalSettings();
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      foreach (Sensor sensor in temperatures) 
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        sensor.Value = settings.Sensor[sensor.Index].CurrentTemp;
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      if (fan != null) {
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        int value = 0;
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        NVAPI.NvAPI_GPU_GetTachReading(handle, out value);
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        fan.Value = value;
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      }
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    }
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  }
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}