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 );