internal TwainConfig(PlatformID platform, bool is32Bit)
{
Platform = platform;
Is32Bit = is32Bit;
// initial default until twain entry is available
switch (platform)
{
case PlatformID.Win32NT:
_defaultMemoryManager = new WinMemoryManager();
break;
default:
_defaultMemoryManager = new MarshalMemoryManager();
break;
}
}
PlatformInfo()
{
IsApp64Bit = IntPtr.Size == 8;
IsOnMono = Type.GetType("Mono.Runtime") != null;
IsWindows = Environment.OSVersion.Platform == PlatformID.Win32NT;
IsLinux = Environment.OSVersion.Platform == PlatformID.Unix;
_defaultLog = new TraceLog();
if (IsWindows)
{
_defaultMemManager = new WinMemoryManager();
// only the new twaindsm can be loaded outside of windows folder, twain_32 can't
newDsmPath = GetFirstFilePathThatExists(Dsm.WIN_NEW_DSM_NAME,
// should be same order as dllimport search order
GetExeFolder(),
AppDomain.CurrentDomain.BaseDirectory,
Environment.SystemDirectory,
GetWindowsFolder(),
Environment.CurrentDirectory)
??
Path.Combine(Environment.SystemDirectory, Dsm.WIN_NEW_DSM_NAME);
oldDsmPath = Path.Combine(GetWindowsFolder(), Dsm.WIN_OLD_DSM_NAME);
PreferNewDSM = true;
}
else if (IsLinux)
{
_defaultMemManager = new LinuxMemoryManager();
ExpectedDsmPath = Dsm.LINUX_DSM_PATH;
DsmExists = File.Exists(ExpectedDsmPath);
IsSupported = DsmExists && IsOnMono;
}
else
{
// mac? not gonna happen
}
}
