public static AcmDriver AddLocalDriver(string driverFile)
{
IntPtr intPtr = NativeMethods.LoadLibrary(driverFile);
if (intPtr == IntPtr.Zero)
{
throw new ArgumentException("Failed to load driver file");
}
IntPtr procAddress = NativeMethods.GetProcAddress(intPtr, "DriverProc");
if (procAddress == IntPtr.Zero)
{
NativeMethods.FreeLibrary(intPtr);
throw new ArgumentException("Failed to discover DriverProc");
}
IntPtr hAcmDriver;
MmResult mmResult = AcmInterop.acmDriverAdd(out hAcmDriver, intPtr, procAddress, 0, AcmDriverAddFlags.Function);
if (mmResult != MmResult.NoError)
{
NativeMethods.FreeLibrary(intPtr);
throw new MmException(mmResult, "acmDriverAdd");
}
AcmDriver acmDriver = new AcmDriver(hAcmDriver);
if (string.IsNullOrEmpty(acmDriver.details.longName))
{
acmDriver.details.longName = "Local driver: " + Path.GetFileName(driverFile);
acmDriver.localDllHandle = intPtr;
}
return(acmDriver);
}
public static AcmDriver FindByShortName(string shortName)
{
foreach (AcmDriver current in AcmDriver.EnumerateAcmDrivers())
{
if (current.ShortName == shortName)
{
return(current);
}
}
return(null);
}
public static void RemoveLocalDriver(AcmDriver localDriver)
{
if (localDriver.localDllHandle == IntPtr.Zero)
{
throw new ArgumentException("Please pass in the AcmDriver returned by the AddLocalDriver method");
}
MmResult arg_3A_0 = AcmInterop.acmDriverRemove(localDriver.driverId, 0);
NativeMethods.FreeLibrary(localDriver.localDllHandle);
MmException.Try(arg_3A_0, "acmDriverRemove");
}
public static bool IsCodecInstalled(string shortName)
{
using (IEnumerator <AcmDriver> enumerator = AcmDriver.EnumerateAcmDrivers().GetEnumerator())
{
while (enumerator.MoveNext())
{
if (enumerator.Current.ShortName == shortName)
{
return(true);
}
}
}
return(false);
}
