private static NVDRS_SETTING_UNION ConvertStringToSettingUnion(SettingValueType valueType, string valueString)
{
var union = new NVDRS_SETTING_UNION();
switch (valueType)
{
case SettingValueType.Dword:
union.dwordValue = uint.Parse(valueString);
break;
case SettingValueType.String:
union.stringValue = valueString;
break;
case SettingValueType.AnsiString:
union.ansiStringValue = valueString;
break;
case SettingValueType.Binary:
union.binaryValue = Convert.FromBase64String(valueString);
break;
default:
throw new Exception("invalid value type");
}
return(union);
}
//Update the maximum frame rate setting
public static bool UpdateMaxFrameRate(int maxFrameRate)
{
try
{
//Session and profile variables
IntPtr hSession = IntPtr.Zero;
IntPtr hProfile = IntPtr.Zero;
//Initialize api
NVAPI_Status nvAPI_Initialize = GetApiIdDelegate <NvAPI_InitializeDelegate>(NVAPI_Id.NvAPI_Initialize)();
if (nvAPI_Initialize != NVAPI_Status.NVAPI_OK)
{
Debug.WriteLine("Failed to initialize the nvidia api.");
return(false);
}
//Create session
NVAPI_Status nvAPI_DRS_CreateSessionDelegate = GetApiIdDelegate <NvAPI_DRS_CreateSessionDelegate>(NVAPI_Id.NvAPI_DRS_CreateSession)(ref hSession);
if (nvAPI_DRS_CreateSessionDelegate != NVAPI_Status.NVAPI_OK)
{
Debug.WriteLine("Failed to create session.");
return(false);
}
//Load settings
NVAPI_Status nvAPI_DRS_LoadSettings = GetApiIdDelegate <NvAPI_DRS_LoadSettingsDelegate>(NVAPI_Id.NvAPI_DRS_LoadSettings)(hSession);
if (nvAPI_DRS_LoadSettings != NVAPI_Status.NVAPI_OK)
{
Debug.WriteLine("Failed to load settings.");
return(false);
}
//Get base profile
NVAPI_Status nvAPI_DRS_GetBaseProfileDelegate = GetApiIdDelegate <NvAPI_DRS_GetBaseProfileDelegate>(NVAPI_Id.NvAPI_DRS_GetBaseProfile)(hSession, ref hProfile);
if (nvAPI_DRS_GetBaseProfileDelegate != NVAPI_Status.NVAPI_OK)
{
Debug.WriteLine("Failed to get base profile.");
return(false);
}
//Create new setting
NVDRS_SETTING_V1 drsSetting = new NVDRS_SETTING_V1
{
version = MAKE_NVAPI_VERSION <NVDRS_SETTING_V1>(1),
settingId = (uint)ESetting.MAXFRAMERATE,
settingType = NVDRS_SETTING_TYPE.NVDRS_DWORD_TYPE,
settingLocation = NVDRS_SETTING_LOCATION.NVDRS_GLOBAL_PROFILE_LOCATION
};
uint uintHexValue = uint.Parse(maxFrameRate.ToString("X"), NumberStyles.HexNumber);
NVDRS_SETTING_UNION currentValue = new NVDRS_SETTING_UNION
{
dwordValue = uintHexValue
};
drsSetting.currentValue = currentValue;
//Set new setting
NVAPI_Status nvAPI_DRS_SetSettingDelegate = GetApiIdDelegate <NvAPI_DRS_SetSettingDelegate>(NVAPI_Id.NvAPI_DRS_SetSetting)(hSession, hProfile, ref drsSetting);
if (nvAPI_DRS_SetSettingDelegate != NVAPI_Status.NVAPI_OK)
{
Debug.WriteLine("Failed to set setting.");
return(false);
}
//Save new setting
NVAPI_Status nvAPI_DRS_SaveSettingsDelegate = GetApiIdDelegate <NvAPI_DRS_SaveSettingsDelegate>(NVAPI_Id.NvAPI_DRS_SaveSettings)(hSession);
if (nvAPI_DRS_SaveSettingsDelegate != NVAPI_Status.NVAPI_OK)
{
Debug.WriteLine("Failed to save settings.");
return(false);
}
//Destroy session
NVAPI_Status nvAPI_DRS_DestroySessionDelegate = GetApiIdDelegate <NvAPI_DRS_DestroySessionDelegate>(NVAPI_Id.NvAPI_DRS_DestroySession)(hSession);
if (nvAPI_DRS_DestroySessionDelegate != NVAPI_Status.NVAPI_OK)
{
Debug.WriteLine("Failed to destroy session.");
return(false);
}
Debug.WriteLine("Adjusted the maximum frame rate to " + maxFrameRate + "fps");
return(true);
}
catch (Exception ex)
{
Debug.WriteLine("Failed to adjust maximum frame rate: " + ex.Message);
return(false);
}
}
