public static extern ReturnCode DsmWin32(
[In, Out] TW_IDENTITY origin,
[In, Out] TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_JPEGCOMPRESSION data);
/// <summary>
/// Get/Set JPEG compression tables...
/// </summary>
/// <param name="a_dg">Data group</param>
/// <param name="a_msg">Operation</param>
/// <param name="a_twjpegcompression">JPEGCOMPRESSION structure</param>
/// <returns>TWAIN status</returns>
public STS DatJpegcompression(DG a_dg, MSG a_msg, ref TW_JPEGCOMPRESSION a_twjpegcompression)
{
STS sts;
// Submit the work to the TWAIN thread...
if ((m_threadTwain != null) && (m_threadTwain.ManagedThreadId != Thread.CurrentThread.ManagedThreadId))
{
lock (m_lockTwain)
{
// Set our command variables...
ThreadData threaddata = default(ThreadData);
threaddata.twjpegcompression = a_twjpegcompression;
threaddata.dg = a_dg;
threaddata.msg = a_msg;
threaddata.dat = DAT.JPEGCOMPRESSION;
long lIndex = m_twaincommand.Submit(threaddata);
// Submit the command and wait for the reply...
CallerToThreadSet();
ThreadToCallerWaitOne();
// Return the result...
a_twjpegcompression = m_twaincommand.Get(lIndex).twjpegcompression;
sts = m_twaincommand.Get(lIndex).sts;
// Clear the command variables...
m_twaincommand.Delete(lIndex);
}
return (sts);
}
// Log it...
if (Log.GetLevel() > 0)
{
Log.LogSendBefore(a_dg.ToString(), DAT.JPEGCOMPRESSION.ToString(), a_msg.ToString(), "");
}
// Windows...
if (ms_platform == Platform.WINDOWS)
{
// Issue the command...
try
{
if (m_blUseLegacyDSM)
{
sts = (STS)WindowsTwain32DsmEntryJpegcompression(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.JPEGCOMPRESSION, a_msg, ref a_twjpegcompression);
}
else
{
sts = (STS)WindowsTwaindsmDsmEntryJpegcompression(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.JPEGCOMPRESSION, a_msg, ref a_twjpegcompression);
}
}
catch
{
// The driver crashed...
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
}
// Linux...
else if (ms_platform == Platform.LINUX)
{
// Issue the command...
try
{
if (TWAIN.GetMachineWordBitSize() == 32)
{
sts = (STS)LinuxDsmEntryJpegcompression(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.JPEGCOMPRESSION, a_msg, ref a_twjpegcompression);
}
else
{
sts = (STS)Linux64DsmEntryJpegcompression(ref m_twidentityApp, ref m_twidentityDs, a_dg, DAT.JPEGCOMPRESSION, a_msg, ref a_twjpegcompression);
}
}
catch
{
// The driver crashed...
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
}
// Mac OS X, which has to be different...
else if (ms_platform == Platform.MACOSX)
{
// Issue the command...
try
{
sts = (STS)MacosxDsmEntryJpegcompression(ref m_twidentitymacosxApp, ref m_twidentitymacosxDs, a_dg, DAT.JPEGCOMPRESSION, a_msg, ref a_twjpegcompression);
}
catch
{
// The driver crashed...
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
}
// Uh-oh...
else
{
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
// Log it...
if (Log.GetLevel() > 0)
{
Log.LogSendAfter(sts.ToString(), "");
}
// All done...
return (AutoDatStatus(sts));
}
private static extern UInt16 Linux64DsmEntryJpegcompression
(
ref TW_IDENTITY origin,
ref TW_IDENTITY dest,
DG dg,
DAT dat,
MSG msg,
ref TW_JPEGCOMPRESSION twjpegcompression
);
private static extern UInt16 MacosxDsmEntryJpegcompression
(
ref TW_IDENTITY_MACOSX origin,
ref TW_IDENTITY_MACOSX dest,
DG dg,
DAT dat,
MSG msg,
ref TW_JPEGCOMPRESSION twjpegcompression
);
private static extern UInt16 WindowsTwaindsmDsmEntryJpegcompression
(
ref TW_IDENTITY_LEGACY origin,
ref TW_IDENTITY_LEGACY dest,
DG dg,
DAT dat,
MSG msg,
ref TW_JPEGCOMPRESSION twjpegcompression
);
