Pitchbend step

README.md

@@ -24,17 +24,18 @@ Features
 
 Changelog
 ---------
-#### Version 0.4.0 (current sprint)
+#### Version 0.4.0
 * Modulation wheel support
 * Now using the [Obxd](https://obxd.wordpress.com) 4-pole lowpass filter implementation
 * Pitchbend range / step
-* Output VU status
+* Output/Volume VU status
 
 Binary downloads
 ----------------
 Dexed is not a finished product but it is stable enough to be used in a DAW environment: 
 in normal operation it shouldn't crash and the VST state saving works.
 
+* Version 0.4.0 [vst win32](http://le-son666.com/software/dexed/dexed-0.4.0-win32.zip) - [vst win64](http://le-son666.com/software/dexed/dexed-0.4.0-win64.zip) - [vst os x](http://le-son666.com/software/dexed/dexed-0.4.0-osx.vst.zip)
 * Version 0.3.0 [vst win32](http://le-son666.com/software/dexed/dexed-0.3.0-win32.zip) - [vst win64](http://le-son666.com/software/dexed/dexed-0.3.0-win64.zip) - [vst os x](http://le-son666.com/software/dexed/dexed-0.3.0-osx.vst.zip)
 
 Using as a DX7 editor
@@ -57,6 +58,12 @@ digital circuit bending feel.
 Saving those corrupt/random sysex data will regenerate a 32 bulk program sysex dump with a 
 valid checksum for your DX7 keyboard. I'm in now way responsible if this breaks your DX7 keyboard.
 
+FAQ (possibly)
+--------------
+* Some programs can generate distortion : This is because the voice summing still needs some tuning. You can simply lower the volume on those programs.
+* Some sysex seems to be corrupted : Even if the sysex checksum doesn't match, Dexed will try to load it (this is a kind of randomize feature). Right now Dexed supports only original DX7 sysex, other DX family sysex (like the DX21) is considered as random data.
+* Dexed doesn't receive/send parameter data from/to my DX7 : Most DX7 parameter change are done via sysex and very few VST host actually implements sysex. I'm planning to do a standalone executable to handle this issue.
+
 Credits & thanks
 ----------------
 * DX Synth engine : Raph Levien and the [msfa](https://code.google.com/p/music-synthesizer-for-android) team 
@@ -70,6 +77,7 @@ TODO - Dexed
 * Implement a better DX look and feel (amp, pitch, algo)
 * Various code cleanup
 * Standalone executable (for full support of the sysex editor)
+* Midi sample resolution on DAW block size
 
 TODO - msfa
 -----------

Source/DXComponents.cpp

@@ -437,6 +437,25 @@ void VuMeter::paint(Graphics &g) {
     }
 }
 
+LcdDisplay::LcdDisplay() {
+    systemMsg << "*** DEXED FM synthesizer ***";
+}
+
+void LcdDisplay::timerCallback() {
+    systemMsg = "*** DEXED FM synthesizer ***";
+    repaint();
+}
+
+void LcdDisplay::setSystemMsg(String msg) {
+    systemMsg = msg;
+    triggerAsyncUpdate();
+}
+
+void LcdDisplay::handleAsyncUpdate() {
+    repaint();
+    startTimer(5000);
+}
+
 void LcdDisplay::paint(Graphics &g) {
     g.setColour(Colours::black.withAlpha(0.4f));
     g.fillRoundedRectangle (0.0f, 0.0f, (float) getWidth(), (float) getHeight(), 1.0f);

Source/DXComponents.h

@@ -56,8 +56,12 @@ public :
     int totalBlocks;
 };
 
-class LcdDisplay : public Component {
+class LcdDisplay : public Component, public Timer, public AsyncUpdater {
+    void timerCallback();
+    void handleAsyncUpdate();
 public:
+    LcdDisplay();
+    void setSystemMsg(String msg);
     String systemMsg;
     String paramMsg;
     void paint(Graphics &g);    

Source/GlobalEditor.cpp

@@ -182,7 +182,6 @@ GlobalEditor::GlobalEditor ()
 
 
     //[Constructor] You can add your own custom stuff here..
-    lcdDisplay->systemMsg << "*** DEXED FM synthesizer ***";
     vuOutput->totalBlocks = 6;
 
     //[/Constructor]
@@ -448,8 +447,7 @@ void GlobalEditor::bind(DexedAudioProcessor *parent) {
 }
 
 void GlobalEditor::setSystemMessage(String msg) {
-    lcdDisplay->systemMsg = msg;
-    repaint();
+    lcdDisplay->setSystemMsg(msg);
 }
 
 void GlobalEditor::setParamMessage(String msg) {

Source/ParamDialog.cpp

@@ -49,6 +49,7 @@ ParamDialog::ParamDialog ()
 
 
     //[Constructor] You can add your own custom stuff here..
+    pitchRange->setEnabled(pitchStep->getValue() == 0);
     //[/Constructor]
 }
 
@@ -110,6 +111,7 @@ void ParamDialog::sliderValueChanged (Slider* sliderThatWasMoved)
     else if (sliderThatWasMoved == pitchStep)
     {
         //[UserSliderCode_pitchStep] -- add your slider handling code here..
+        pitchRange->setEnabled(pitchStep->getValue() == 0);
         //[/UserSliderCode_pitchStep]
     }
 

Source/PluginEditor.cpp

@@ -175,7 +175,6 @@ void DexedAudioProcessorEditor::buttonClicked(Button *buttonThatWasClicked) {
         return;
     }
     
-    
     if (buttonThatWasClicked == loadButton) {
         FileChooser fc ("Import original DX sysex...", File::nonexistent, "*.syx;*.SYX;*.*", 1);
 
@@ -191,7 +190,9 @@ void DexedAudioProcessorEditor::buttonClicked(Button *buttonThatWasClicked) {
             }
             fp_in.read((char *)syx_data, 4104);
             fp_in.close();
-            processor->importSysex((char *) &syx_data);
+            if ( processor->importSysex((char *) &syx_data) ) {
+                global.setSystemMessage(String("Unkown sysex format !?"));
+            }
             processor->setCurrentProgram(0);
             rebuildProgramCombobox();
             programs.setSelectedId(processor->getCurrentProgram()+1, NotificationType::dontSendNotification);
@@ -248,9 +249,6 @@ void DexedAudioProcessorEditor::buttonClicked(Button *buttonThatWasClicked) {
     }
     
     if (buttonThatWasClicked == aboutButton) {
-        /*AlertWindow::showMessageBoxAsync(AlertWindow::NoIcon, "DEXED - DX Emulator 0.4", "https://github.com/asb2m10/dexed\n"
-                "(c) 2013-2014 Pascal Gauthier\nUnder the GPL v2\n\n"
-                "Based on Music Synthesizer for Android\nhttps://code.google.com/p/music-synthesizer-for-android");*/
         AboutBox about(this);
         about.runModalLoop();
         return;

Source/PluginFx.cpp

@@ -75,11 +75,10 @@ void PluginFx::init(int sr) {
     
     uiCutoff = 1;
     uiReso = 0;
-    uiGain = 0.8;
+    uiGain = 1;
     
     pCutoff = -1;
     pReso = -1;
-    pGain = -1;
 }
 
 inline float PluginFx::NR24(float sample,float g,float lpc) {
@@ -96,74 +95,72 @@ inline float PluginFx::NR(float sample, float g) {
 }
 
 void PluginFx::process(float *work, int sampleSize) {
+    if ( uiGain != 1 ) {
+        for(int i=0; i < sampleSize; i++ )
+            work[i] *= uiGain;
+    }
+    
     // don't apply the LPF if the cutoff is to maximum
-    if ( uiCutoff != 1 ) {
-        if ( uiCutoff != pCutoff || uiReso != pReso ) {
-            rReso = (0.991-logsc(1-uiReso,0,0.991));
-            R24 = 3.5 * rReso;
+    if ( uiCutoff == 1 )
+        return;
+    
+    if ( uiCutoff != pCutoff || uiReso != pReso ) {
+        rReso = (0.991-logsc(1-uiReso,0,0.991));
+        R24 = 3.5 * rReso;
         
-            float cutoffNorm = logsc(uiCutoff,60,19000);
-            rCutoff = (float)tan(cutoffNorm * sampleRateInv * juce::float_Pi);
-            
-            pCutoff = uiCutoff;
-            pReso = uiReso;
+        float cutoffNorm = logsc(uiCutoff,60,19000);
+        rCutoff = (float)tan(cutoffNorm * sampleRateInv * juce::float_Pi);
             
-            R = 1 - rReso;
-        }
+        pCutoff = uiCutoff;
+        pReso = uiReso;
         
-        // THIS IS MY FAVORITE 4POLE OBXd filter
+        R = 1 - rReso;
+    }
         
-        // maybe smooth this value
-        float g = rCutoff;
-        float lpc = g / (1 + g);
+    // THIS IS MY FAVORITE 4POLE OBXd filter
         
-        for(int i=0; i < sampleSize; i++ ) {
-            float s = work[i];
-            s = s - 0.45*tptlpupw(c,s,15,sampleRateInv);
-            s = tptpc(d,s,bright);
-            
-            float y0 = NR24(s,g,lpc);
-            
-            //first low pass in cascade
-            double v = (y0 - s1) * lpc;
-            double res = v + s1;
-            s1 = res + v;
-            
-            //damping
-            s1 =atan(s1*rcor24)*rcor24Inv;
-            float y1= res;
-            float y2 = tptpc(s2,y1,g);
-            float y3 = tptpc(s3,y2,g);
-            float y4 = tptpc(s4,y3,g);
-            float mc;
+    // maybe smooth this value
+    float g = rCutoff;
+    float lpc = g / (1 + g);
+    
+    for(int i=0; i < sampleSize; i++ ) {
+        float s = work[i];
+        s = s - 0.45*tptlpupw(c,s,15,sampleRateInv);
+        s = tptpc(d,s,bright);
         
-            switch(mmch) {
-                case 0:
-                    mc = ((1 - mmt) * y4 + (mmt) * y3);
-                    break;
-                case 1:
-                    mc = ((1 - mmt) * y3 + (mmt) * y2);
-                    break;
-                case 2:
-                    mc = ((1 - mmt) * y2 + (mmt) * y1);
-                    break;
-                case 3:
-                    mc = y1;
-                    break;
-            }
+        float y0 = NR24(s,g,lpc);
         
-            //half volume comp
-            work[i] = mc * (1 + R24 * 0.45);
-        }
-    }
+        //first low pass in cascade
+        double v = (y0 - s1) * lpc;
+        double res = v + s1;
+        s1 = res + v;
+        
+        //damping
+        s1 =atan(s1*rcor24)*rcor24Inv;
+        float y1= res;
+        float y2 = tptpc(s2,y1,g);
+        float y3 = tptpc(s3,y2,g);
+        float y4 = tptpc(s4,y3,g);
+        float mc;
     
-    if ( uiGain != pGain ) {
-        rGain = linsc(uiGain, 0, 1.25);
-        pGain = uiGain;
+        switch(mmch) {
+            case 0:
+                mc = ((1 - mmt) * y4 + (mmt) * y3);
+                break;
+            case 1:
+                mc = ((1 - mmt) * y3 + (mmt) * y2);
+                break;
+            case 2:
+                mc = ((1 - mmt) * y2 + (mmt) * y1);
+                break;
+            case 3:
+                mc = y1;
+                break;
+        }
+        
+        //half volume comp
+        work[i] = mc * (1 + R24 * 0.45);
     }
-    
-    for(int i=0; i < sampleSize; i++ )
-        work[i] *= rGain;
 }
 
 /*

Source/PluginProcessor.cpp

@@ -63,7 +63,6 @@ DexedAudioProcessor::DexedAudioProcessor() {
     controllers.values_[kControllerPitchRange] = 3;
     controllers.values_[kControllerPitchStep] = 0;
     loadPreference();
-
 }
 
 DexedAudioProcessor::~DexedAudioProcessor() {
@@ -87,7 +86,6 @@ void DexedAudioProcessor::prepareToPlay(double sampleRate, int samplesPerBlock)
     currentNote = 0;
     controllers.values_[kControllerPitch] = 0x2000;
     controllers.values_[kControllerModWheel] = 0;
-
     
     sustain = false;
     extra_buf_size = 0;

Source/msfa/dx7note.cc

@@ -26,6 +26,14 @@
 
 using namespace std;
 
+void dexed_trace(const char *source, const char *fmt, ...);
+
+#ifdef _MSC_VER
+#define TRACE(fmt, ...) dexed_trace(__FUNCTION__,fmt,##__VA_ARGS__)
+#else
+#define TRACE(fmt, ...) dexed_trace(__PRETTY_FUNCTION__,fmt,##__VA_ARGS__)
+#endif
+
 int32_t midinote_to_logfreq(int midinote) {
   const int base = 50857777;  // (1 << 24) * (log(440) / log(2) - 69/12)
   const int step = (1 << 24) / 12;
@@ -191,16 +199,18 @@ void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay,
   pitchmod += (((int64_t)pmd) * (int64_t)senslfo) >> 39;
 
   int pitchbend = ctrls->values_[kControllerPitch];
-  int32_t pb;
+  int32_t pb = (pitchbend - 0x2000);
     
-  if ( ctrls->values_[kControllerPitchStep] == 0 ) {
-      pb = ((float)((pitchbend - 0x2000) << 11)) * ((float)ctrls->values_[kControllerPitchRange]) / 12.0;
-  } else {
-      int stp = 12 / ctrls->values_[kControllerPitchStep];
-      pb = (pitchbend - 0x2000) / stp;
-      pb = (pb * stp) << 11;
+  if ( pb != 0 ) {
+    if ( ctrls->values_[kControllerPitchStep] == 0 ) {
+        pb = ((float)(pb << 11)) * ((float)ctrls->values_[kControllerPitchRange]) / 12.0;
+    } else {
+        int stp = 12 / ctrls->values_[kControllerPitchStep];
+        pb = pb * stp / 8191;
+        pb = (pb * (8191/stp)) << 11;
+    }
   }
-    
+        
   pitchmod += pb;
   for (int op = 0; op < 6; op++) {
     params_[op].gain[0] = params_[op].gain[1];