moved old qt4 branch

1 files changed, 904 insertions, 0 deletions

diff --git a/muse_qt4_evolution/midiplugins/transform/transform.cpp b/muse_qt4_evolution/midiplugins/transform/transform.cpp
new file mode 100644
index 00000000..1376d2fc
--- /dev/null
+++ b/muse_qt4_evolution/midiplugins/transform/transform.cpp
@@ -0,0 +1,904 @@
+//=========================================================
+//  MusE
+//  Linux Music Editor
+//  $Id: transform.cpp,v 1.8 2005/11/17 18:19:30 wschweer Exp $
+//
+//  (C) Copyright 2001-2005 Werner Schweer (ws@seh.de)
+//=========================================================
+
+#include "midievent.h"
+#include "transform.h"
+
+static int eventTypeTable[] = {
+      1, 6, 4, 7, 8, 10, 11
+      };
+static int procVal2Map[] = { 0, 1, 2, 3, 4, 5, 6, 7, 10, 11 };
+
+struct TDict {
+      TransformFunction id;
+      const QString text;
+      TDict(TransformFunction f, const QString& s) : id(f), text(s) {}
+      };
+
+static const TDict oplist[] = {
+      TDict(Trans, QString("Transform")),
+      TDict(Delete, QString("Filter"))
+      };
+
+static const char* vall[] = {
+      "c","c#","d","d#","e","f","f#","g","g#","a","a#","h"
+      };
+static const char* valu[] = {
+      "C","C#","D","D#","E","F","F#","G","G#","A","A#","H"
+      };
+
+//---------------------------------------------------------
+//   pitch2string
+//---------------------------------------------------------
+
+static QString pitch2string(int v)
+      {
+      if (v < 0 || v > 127)
+            return QString("----");
+      int octave = (v / 12) - 2;
+      QString o;
+      o.sprintf("%d", octave);
+      int i = v % 12;
+      QString s(octave < 0 ? valu[i] : vall[i]);
+      return s + o;
+      }
+//---------------------------------------------------------
+//   Transform
+//---------------------------------------------------------
+
+Transform::Transform(const char* name, const MempiHost* h)
+   : Mempi(name, h)
+      {
+      }
+
+bool Transform::init()
+      {
+      gui = new TransformDialog(this, 0);
+      gui->setWindowTitle(QString(name()));
+      gui->show();
+
+      data.selEventOp   = All;
+      data.selType      = 0x90;
+      data.selVal1      = Ignore;
+      data.selVal1a     = 0;
+      data.selVal1b     = 0;
+      data.selVal2      = Ignore;
+      data.selVal2a     = 0;
+      data.selVal2b     = 0;
+      data.procEvent    = Keep;
+      data.eventType    = 0x90;
+      data.procVal1     = Keep;
+      data.procVal1a    = 0;
+      data.procVal1b    = 0;
+      data.procVal2     = Keep;
+      data.procVal2a    = 0;
+      data.procVal2b    = 0;
+      data.funcOp       = Trans;
+      data.quantVal     = host->division();
+      data.selChannel   = Ignore;
+      data.selChannela  = 0;
+      data.selChannelb  = 0;
+      data.procChannel  = Keep;
+      data.procChannela = 0;
+      data.procChannelb = 0;
+      return false;
+      }
+
+//---------------------------------------------------------
+//   filterValOp
+//---------------------------------------------------------
+
+static bool filterValOp(ValOp op, int val, int val1, int val2)
+      {
+      switch (op) {
+            case Ignore:
+                  break;
+            case Equal:
+                  if (val != val1)
+                        return true;
+                  break;
+            case Unequal:
+                  if (val == val1)
+                        return true;
+                  break;
+            case Higher:
+                  if (val <= val1)
+                        return true;
+                  break;
+            case Lower:
+                  if (val >= val1)
+                        return true;
+                  break;
+            case Inside:
+                  if ((val < val1) || (val >= val2))
+                        return true;
+                  break;
+            case Outside:
+                  if ((val >= val1) && (val < val2))
+                        return true;
+                  break;
+            }
+      return false;
+      }
+
+//---------------------------------------------------------
+//   apply
+//    apply Select filter
+//    return  0 - not applied
+//            1 - drop event
+//            2 - event changed
+//---------------------------------------------------------
+
+void Transform::process(unsigned, unsigned, MidiEventList* il, MidiEventList* ol)
+      {
+      for (iMidiEvent i = il->begin(); i != il->end(); ++i) {
+            MidiEvent event(*i);
+            if (filterEvent(event) == 1)
+                  continue;
+            ol->insert(event);
+            }
+      }
+
+//---------------------------------------------------------
+//   filterEvent
+//---------------------------------------------------------
+
+int Transform::filterEvent(MidiEvent& event)
+      {
+      switch (data.selEventOp) {
+            case Equal:
+                  switch(event.type()) {
+                        case 0x90:
+                        case 0x80:
+                              if (data.selType != 0x90)
+                                    return 0;
+                              break;
+                        default:
+                              if (event.type() != data.selType)
+                                    return 0;
+                              break;
+                        }
+                  break;
+            case Unequal:
+                  switch(event.type()) {
+                        case 0x90:
+                        case 0x80:
+                              if (data.selType == 0x90)
+                                    return 0;
+                              break;
+                        default:
+                              if (event.type() == data.selType)
+                                    return 0;
+                              break;
+                        }
+                  break;
+            default:
+                  break;
+            }
+      if (filterValOp(data.selVal1, event.dataA(), data.selVal1a, data.selVal1b))
+            return 0;
+      if (filterValOp(data.selVal2, event.dataB(), data.selVal2a, data.selVal2b))
+            return 0;
+      if (filterValOp(data.selChannel, event.channel(), data.selChannela, data.selChannelb))
+            return 0;
+
+      if (data.funcOp == Delete)
+            return 1;     // discard event
+
+      // transform event
+      if (data.procEvent != Keep)
+            event.setType(data.eventType);
+
+      //---------------------------------------------------
+      //    transform value A
+      //---------------------------------------------------
+
+      int val = event.dataA();
+      switch (data.procVal1) {
+            case Keep:
+                  break;
+            case Plus:
+                  val += data.procVal1a;
+                  break;
+            case Minus:
+                  val -= data.procVal1a;
+                  break;
+            case Multiply:
+                  val = int(val * (data.procVal1a/100.0) + .5);
+                  break;
+            case Divide:
+                  val = int(val / (data.procVal1a/100.0) + .5);
+                  break;
+            case Fix:
+                  val = data.procVal1a;
+                  break;
+            case Value:
+                  val = data.procVal2a;
+                  break;
+            case Invert:
+                  val = 127 - val;
+                  break;
+            case ScaleMap:
+                  printf("scale map not implemented\n");
+                  break;
+            case Flip:
+                  val = data.procVal1a - val;
+                  break;
+            case Dynamic:           // "crescendo"
+                  printf("transform not implemented\n");
+                  break;
+            case Random:
+                  {
+                  int range = data.procVal1b - data.procVal1a;
+                  if (range > 0)
+                        val = (rand() % range) + data.procVal1a;
+                  else if (range < 0)
+                        val = (rand() % -range) + data.procVal1b;
+                  else
+                        val = data.procVal1a;
+                  }
+                  break;
+            }
+      if (val < 0)
+            val = 0;
+      if (val > 127)
+            val = 127;
+      event.setA(val);
+
+      //---------------------------------------------------
+      //    transform value B
+      //---------------------------------------------------
+
+      val = event.dataB();
+      switch (data.procVal2) {
+            case Plus:
+                  val += data.procVal2a;
+                  break;
+            case Minus:
+                  val -= data.procVal2a;
+                  break;
+            case Multiply:
+                  val = int(val * (data.procVal2a/100.0) + .5);
+                  break;
+            case Divide:
+                  val = int(val / (data.procVal2a/100.0) + .5);
+                  break;
+            case Fix:
+                  val = data.procVal2a;
+                  break;
+            case Value:
+                  val = data.procVal1a;
+                  break;
+            case Invert:
+                  val = 127 - val;
+                  break;
+            case Dynamic:
+                  printf("transform not implemented\n");
+                  break;
+            case Random:
+                  {
+                  int range = data.procVal2b - data.procVal2a;
+                  if (range > 0)
+                        val = (rand() % range) + data.procVal2a;
+                  else if (range < 0)
+                        val = (rand() % -range) + data.procVal2b;
+                  else
+                        val = data.procVal2a;
+                  }
+                  break;
+            case ScaleMap:
+            case Keep:
+            case Flip:
+                  break;
+            }
+      if (val < 0)
+            val = 0;
+      if (val > 127)
+            val = 127;
+      event.setB(val);
+
+      //---------------------------------------------------
+      //    transform channel
+      //---------------------------------------------------
+
+      val = event.channel();
+      switch (data.procChannel) {
+            case Plus:
+                  val += data.procChannela;
+                  break;
+            case Minus:
+                  val -= data.procChannela;
+                  break;
+            case Multiply:
+                  val = int(val * (data.procChannela/100.0) + .5);
+                  break;
+            case Divide:
+                  val = int(val / (data.procChannela/100.0) + .5);
+                  break;
+            case Fix:
+                  val = data.procChannela;
+                  break;
+            case Value:
+                  val = data.procChannela;
+                  break;
+            case Invert:
+                  val = 16 - val;
+                  break;
+            case Dynamic:
+                  printf("transform not implemented\n");
+                  break;
+            case Random:
+                  {
+                  int range = data.procChannelb - data.procChannela;
+                  if (range > 0)
+                        val = (rand() % range) + data.procChannela;
+                  else if (range < 0)
+                        val = (rand() % -range) + data.procChannelb;
+                  else
+                        val = data.procChannela;
+                  }
+                  break;
+            case ScaleMap:
+            case Keep:
+            case Flip:
+                  break;
+            }
+      if (val < 0)
+            val = 0;
+      if (val > 15)
+            val = 15;
+      event.setChannel(val);
+      return 2;
+      }
+
+//---------------------------------------------------------
+//   getGeometry
+//---------------------------------------------------------
+
+void Transform::getGeometry(int* x, int* y, int* w, int* h) const
+      {
+      QPoint pos(gui->pos());
+      QSize size(gui->size());
+      *x = pos.x();
+      *y = pos.y();
+      *w = size.width();
+      *h = size.height();
+      }
+
+//---------------------------------------------------------
+//   setGeometry
+//---------------------------------------------------------
+
+void Transform::setGeometry(int x, int y, int w, int h)
+      {
+      gui->resize(QSize(w, h));
+      gui->move(QPoint(x, y));
+      }
+
+//---------------------------------------------------------
+//   TransformDialog
+//    Widgets:
+//    selEventOp   selType
+//    selVal1Op    selVal1a selVal1b
+//    selVal2Op    selVal2a selVal2b
+//
+//    procEventOp  procType
+//    procVal1Op   procVal1a procVal1b
+//    procVal2Op   procVal2a procVal2b
+//    funcOp       funcQuantVal
+//    buttonNew    buttonDelete
+//
+//    selChannelOp  selChannelVala selChannelValb
+//    procChannelOp procChannelVala procChannelValb
+//---------------------------------------------------------
+
+TransformDialog::TransformDialog(Transform* tf, QWidget* parent)
+   : QDialog(parent)
+      {
+      setupUi(this);
+      cmt = tf;
+
+      for (unsigned i = 0; i < sizeof(oplist)/sizeof(*oplist); ++i)
+            funcOp->addItem(oplist[i].text, i);
+
+      connect(selEventOp,      SIGNAL(activated(int)),    SLOT(selEventOpSel(int)));
+      connect(selType,         SIGNAL(activated(int)),    SLOT(selTypeSel(int)));
+      connect(selVal1Op,       SIGNAL(activated(int)),    SLOT(selVal1OpSel(int)));
+      connect(selVal2Op,       SIGNAL(activated(int)),    SLOT(selVal2OpSel(int)));
+      connect(procEventOp,     SIGNAL(activated(int)),    SLOT(procEventOpSel(int)));
+      connect(procType,        SIGNAL(activated(int)),    SLOT(procEventTypeSel(int)));
+      connect(procVal1Op,      SIGNAL(activated(int)),    SLOT(procVal1OpSel(int)));
+      connect(procVal2Op,      SIGNAL(activated(int)),    SLOT(procVal2OpSel(int)));
+      connect(funcOp,          SIGNAL(activated(int)),    SLOT(funcOpSel(int)));
+      connect(selVal1a,        SIGNAL(valueChanged(int)), SLOT(selVal1aChanged(int)));
+      connect(selVal1b,        SIGNAL(valueChanged(int)), SLOT(selVal1bChanged(int)));
+      connect(selVal2a,        SIGNAL(valueChanged(int)), SLOT(selVal2aChanged(int)));
+      connect(selVal2b,        SIGNAL(valueChanged(int)), SLOT(selVal2bChanged(int)));
+      connect(procVal1a,       SIGNAL(valueChanged(int)), SLOT(procVal1aChanged(int)));
+      connect(procVal1b,       SIGNAL(valueChanged(int)), SLOT(procVal1bChanged(int)));
+      connect(procVal2a,       SIGNAL(valueChanged(int)), SLOT(procVal2aChanged(int)));
+      connect(procVal2b,       SIGNAL(valueChanged(int)), SLOT(procVal2bChanged(int)));
+      connect(selChannelOp,    SIGNAL(activated(int)),    SLOT(selChannelOpSel(int)));
+      connect(selChannelVala,  SIGNAL(valueChanged(int)), SLOT(selChannelValaChanged(int)));
+      connect(selChannelValb,  SIGNAL(valueChanged(int)), SLOT(selChannelValbChanged(int)));
+      connect(procChannelOp,   SIGNAL(activated(int)),    SLOT(procChannelOpSel(int)));
+      connect(procChannelVala, SIGNAL(valueChanged(int)), SLOT(procChannelValaChanged(int)));
+      connect(procChannelValb, SIGNAL(valueChanged(int)), SLOT(procChannelValbChanged(int)));
+      }
+
+//---------------------------------------------------------
+//   init
+//---------------------------------------------------------
+
+void TransformDialog::init()
+      {
+      selEventOp->setCurrentIndex(cmt->data.selEventOp);
+      selEventOpSel(cmt->data.selEventOp);
+
+      for (unsigned i = 0; i < sizeof(eventTypeTable)/sizeof(*eventTypeTable); ++i) {
+            if (eventTypeTable[i] == cmt->data.selType) {
+                  selType->setCurrentIndex(i);
+                  break;
+                  }
+            }
+
+      selVal1Op->setCurrentIndex(cmt->data.selVal1);
+      selVal1OpSel(cmt->data.selVal1);
+
+      selVal2Op->setCurrentIndex(cmt->data.selVal2);
+      selVal2OpSel(cmt->data.selVal2);
+
+      selChannelOp->setCurrentIndex(cmt->data.selChannel);
+      selChannelOpSel(cmt->data.selChannel);
+
+      {
+      unsigned i;
+      for (i = 0; i < sizeof(oplist)/sizeof(*oplist); ++i) {
+            if (oplist[i].id == cmt->data.funcOp) {
+                  funcOp->setCurrentIndex(i);
+                  break;
+                  }
+            }
+      if (i == sizeof(oplist)/sizeof(*oplist))
+            printf("internal error: bad OpCode\n");
+      funcOpSel(i);
+      }
+
+      procEventOp->setCurrentIndex(cmt->data.procEvent);
+      procEventOpSel(cmt->data.procEvent);
+
+      procVal1Op->setCurrentIndex(cmt->data.procVal1);
+      procVal1OpSel(cmt->data.procVal1);
+
+      for (unsigned i = 0; i < sizeof(procVal2Map)/sizeof(*procVal2Map); ++i) {
+            if (procVal2Map[i] == cmt->data.procVal2) {
+                  procVal2Op->setCurrentIndex(i);
+                  break;
+                  }
+            }
+
+      selVal1a->setValue(cmt->data.selVal1a);
+      selVal1b->setValue(cmt->data.selVal1b);
+      selVal1aChanged(cmt->data.selVal1a);
+      selVal1bChanged(cmt->data.selVal1b);
+
+      selVal2a->setValue(cmt->data.selVal2a);
+      selVal2b->setValue(cmt->data.selVal2b);
+
+      selChannelVala->setValue(cmt->data.selChannela);
+      selChannelValb->setValue(cmt->data.selChannelb);
+
+      procVal1a->setValue(cmt->data.procVal1a);
+      procVal1b->setValue(cmt->data.procVal1b);
+
+      procVal2a->setValue(cmt->data.procVal2a);
+      procVal2b->setValue(cmt->data.procVal2b);
+
+      procChannelVala->setValue(cmt->data.procChannela);
+      procChannelValb->setValue(cmt->data.procChannelb);
+      }
+
+//---------------------------------------------------------
+//   setValOp
+//---------------------------------------------------------
+
+void TransformDialog::setValOp(QWidget* a, QWidget* b, ValOp op)
+      {
+      switch (op) {
+            case Ignore:
+                  a->setEnabled(false);
+                  b->setEnabled(false);
+                  break;
+            case Equal:
+            case Unequal:
+            case Higher:
+            case Lower:
+                  a->setEnabled(true);
+                  b->setEnabled(false);
+                  break;
+            case Inside:
+            case Outside:
+                  a->setEnabled(true);
+                  b->setEnabled(true);
+                  break;
+            }
+      }
+
+//---------------------------------------------------------
+//   selEventOpSel
+//---------------------------------------------------------
+
+void TransformDialog::selEventOpSel(int val)
+      {
+      selType->setEnabled(val != All);
+      cmt->data.selEventOp = ValOp(val);
+      selVal1aChanged(cmt->data.selVal1a);
+      selVal1bChanged(cmt->data.selVal1b);
+      }
+
+//---------------------------------------------------------
+//   selTypeSel
+//---------------------------------------------------------
+
+void TransformDialog::selTypeSel(int val)
+      {
+      cmt->data.selType = eventTypeTable[val];
+      selVal1aChanged(cmt->data.selVal1a);
+      selVal1bChanged(cmt->data.selVal1b);
+      }
+
+//---------------------------------------------------------
+//   selVal1OpSel
+//---------------------------------------------------------
+
+void TransformDialog::selVal1OpSel(int val)
+      {
+      setValOp(selVal1a, selVal1b, ValOp(val));
+      cmt->data.selVal1 = ValOp(val);
+      }
+
+//---------------------------------------------------------
+//   selVal2OpSel
+//---------------------------------------------------------
+
+void TransformDialog::selVal2OpSel(int val)
+      {
+      setValOp(selVal2a, selVal2b, ValOp(val));
+      cmt->data.selVal2 = ValOp(val);
+      }
+
+//---------------------------------------------------------
+//   procEventOpSel
+//---------------------------------------------------------
+
+void TransformDialog::procEventOpSel(int val)
+      {
+      TransformOperator op = val == 0 ? Keep : Fix;
+      procType->setEnabled(op == Fix);
+      cmt->data.procEvent = op;
+      }
+
+//---------------------------------------------------------
+//   procEventTypeSel
+//---------------------------------------------------------
+
+void TransformDialog::procEventTypeSel(int val)
+      {
+      cmt->data.eventType = eventTypeTable[val];
+      }
+
+//---------------------------------------------------------
+//   procVal1OpSel
+//---------------------------------------------------------
+
+void TransformDialog::procVal1OpSel(int val)
+      {
+      cmt->data.procVal1 = TransformOperator(val);
+      switch(TransformOperator(val)) {
+            case Keep:
+            case Invert:
+                  procVal1a->setEnabled(false);
+                  procVal1b->setEnabled(false);
+                  break;
+            case Multiply:
+            case Divide:
+                  procVal1a->setEnabled(true);
+                  procVal1b->setEnabled(false);
+                  break;
+            case Plus:
+            case Minus:
+            case Fix:
+            case Value:
+            case Flip:
+                  procVal1a->setEnabled(true);
+                  procVal1b->setEnabled(false);
+                  break;
+            case Random:
+            case ScaleMap:
+            case Dynamic:
+                  procVal1a->setEnabled(true);
+                  procVal1b->setEnabled(true);
+                  break;
+            }
+      }
+
+//---------------------------------------------------------
+//   procVal2OpSel
+//---------------------------------------------------------
+
+void TransformDialog::procVal2OpSel(int val)
+      {
+      TransformOperator op = TransformOperator(procVal2Map[val]);
+      cmt->data.procVal2 = op;
+
+      switch (op) {
+            case Keep:
+            case Invert:
+                  procVal2a->setEnabled(false);
+                  procVal2b->setEnabled(false);
+                  break;
+            case Multiply:
+            case Divide:
+                  procVal2a->setEnabled(true);
+                  procVal2b->setEnabled(false);
+                  break;
+            case Plus:
+            case Minus:
+            case Fix:
+            case Value:
+                  procVal2a->setEnabled(true);
+                  procVal2b->setEnabled(false);
+                  break;
+            case Random:
+            case Dynamic:
+                  procVal2a->setEnabled(true);
+                  procVal2b->setEnabled(true);
+                  break;
+            default:
+                  break;
+            }
+      }
+
+//---------------------------------------------------------
+//   funcOpSel
+//---------------------------------------------------------
+
+void TransformDialog::funcOpSel(int val)
+      {
+      TransformFunction op = oplist[val].id;
+
+      bool isFuncOp(op == Trans);
+
+      procEventOp->setEnabled(isFuncOp);
+      procType->setEnabled(isFuncOp);
+      procVal1Op->setEnabled(isFuncOp);
+      procVal1a->setEnabled(isFuncOp);
+      procVal1b->setEnabled(isFuncOp);
+      procVal2Op->setEnabled(isFuncOp);
+      procVal2a->setEnabled(isFuncOp);
+      procVal2b->setEnabled(isFuncOp);
+      procChannelOp->setEnabled(isFuncOp);
+      procChannelVala->setEnabled(isFuncOp);
+      procChannelValb->setEnabled(isFuncOp);
+      if (isFuncOp) {
+            procEventOpSel(cmt->data.procEvent);
+            procVal1OpSel(cmt->data.procVal1);
+            procVal2OpSel(cmt->data.procVal2);
+            procChannelOpSel(cmt->data.procChannel);
+            }
+      cmt->data.funcOp = op;
+      }
+
+//---------------------------------------------------------
+//   selVal1aChanged
+//---------------------------------------------------------
+
+void TransformDialog::selVal1aChanged(int val)
+      {
+      cmt->data.selVal1a = val;
+      if ((cmt->data.selEventOp != All)
+         && (cmt->data.selType == 0x90)) {
+            selVal1a->setSuffix(" - " + pitch2string(val));
+            }
+      else
+            selVal1a->setSuffix(QString(""));
+      }
+
+//---------------------------------------------------------
+//   selVal1bChanged
+//---------------------------------------------------------
+
+void TransformDialog::selVal1bChanged(int val)
+      {
+      cmt->data.selVal1b = val;
+      if ((cmt->data.selEventOp != All)
+         && (cmt->data.selType == 0x90)) {
+            selVal1b->setSuffix(" - " + pitch2string(val));
+            }
+      else
+            selVal1b->setSuffix(QString(""));
+      }
+
+//---------------------------------------------------------
+//   selVal2aChanged
+//---------------------------------------------------------
+
+void TransformDialog::selVal2aChanged(int val)
+      {
+      cmt->data.selVal2a = val;
+      }
+
+//---------------------------------------------------------
+//   selVal2bChanged
+//---------------------------------------------------------
+
+void TransformDialog::selVal2bChanged(int val)
+      {
+      cmt->data.selVal2b = val;
+      }
+
+//---------------------------------------------------------
+//   procVal1aChanged
+//---------------------------------------------------------
+
+void TransformDialog::procVal1aChanged(int val)
+      {
+      cmt->data.procVal1a = val;
+      }
+
+//---------------------------------------------------------
+//   procVal1bChanged
+//---------------------------------------------------------
+
+void TransformDialog::procVal1bChanged(int val)
+      {
+      cmt->data.procVal1b = val;
+      }
+
+//---------------------------------------------------------
+//   procVal2aChanged
+//---------------------------------------------------------
+
+void TransformDialog::procVal2aChanged(int val)
+      {
+      cmt->data.procVal2a = val;
+      }
+
+//---------------------------------------------------------
+//   procVal2bChanged
+//---------------------------------------------------------
+
+void TransformDialog::procVal2bChanged(int val)
+      {
+      cmt->data.procVal2b = val;
+      }
+
+//---------------------------------------------------------
+//   selChannelOpSel
+//---------------------------------------------------------
+
+void TransformDialog::selChannelOpSel(int val)
+      {
+      setValOp(selChannelVala, selChannelValb, ValOp(val));
+      cmt->data.selChannel = ValOp(val);
+      }
+
+//---------------------------------------------------------
+//   selChannelValaChanged
+//---------------------------------------------------------
+
+void TransformDialog::selChannelValaChanged(int val)
+      {
+      cmt->data.selChannela = val;
+      }
+
+//---------------------------------------------------------
+//   selChannelValbChanged
+//---------------------------------------------------------
+
+void TransformDialog::selChannelValbChanged(int val)
+      {
+      cmt->data.selChannelb = val;
+      }
+
+//---------------------------------------------------------
+//   procChannelOpSel
+//---------------------------------------------------------
+
+void TransformDialog::procChannelOpSel(int val)
+      {
+      cmt->data.procChannel = TransformOperator(val);
+      switch(TransformOperator(val)) {
+            case Keep:
+            case Invert:
+                  procChannelVala->setEnabled(false);
+                  procChannelValb->setEnabled(false);
+                  break;
+            case Multiply:
+            case Divide:
+                  procChannelVala->setEnabled(true);
+                  procChannelValb->setEnabled(false);
+                  break;
+            case Plus:
+            case Minus:
+            case Fix:
+            case Value:
+            case Flip:
+                  procChannelVala->setEnabled(true);
+                  procChannelValb->setEnabled(false);
+                  break;
+            case Random:
+            case ScaleMap:
+            case Dynamic:
+                  procChannelVala->setEnabled(true);
+                  procChannelValb->setEnabled(true);
+                  break;
+            }
+      }
+
+//---------------------------------------------------------
+//   procChannelValaChanged
+//---------------------------------------------------------
+
+void TransformDialog::procChannelValaChanged(int val)
+      {
+      cmt->data.procChannela = val;
+      }
+
+//---------------------------------------------------------
+//   procChannelValbChanged
+//---------------------------------------------------------
+
+void TransformDialog::procChannelValbChanged(int val)
+      {
+      cmt->data.procChannelb = val;
+      }
+
+//---------------------------------------------------------
+//   getInitData
+//---------------------------------------------------------
+
+void Transform::getInitData(int* n, const unsigned char** p) const
+      {
+      *n = sizeof(data);
+      *p = (unsigned char*)&data;
+      }
+
+//---------------------------------------------------------
+//   setInitData
+//---------------------------------------------------------
+
+void Transform::setInitData(int n, const unsigned char* p)
+      {
+      memcpy((void*)&data, p, n);
+      if (gui)
+            gui->init();
+      }
+
+//---------------------------------------------------------
+//   inst
+//---------------------------------------------------------
+
+static Mempi* instantiate(const char* name, const MempiHost* h)
+      {
+      return new Transform(name, h);
+      }
+
+extern "C" {
+      static MEMPI descriptor = {
+            "Transformator",
+            "MusE Midi Event Transformator",
+            "0.1",      // version string
+            MEMPI_FILTER,
+            MEMPI_MAJOR_VERSION, MEMPI_MINOR_VERSION,
+            instantiate
+            };
+
+      const MEMPI* mempi_descriptor() { return &descriptor; }
+      }
+