add original mdaPiano files by Paul Kellett

1 files changed, 122 insertions, 0 deletions

diff --git a/src/mdaPiano.h b/src/mdaPiano.h
new file mode 100644
index 0000000..a5d3067
--- /dev/null
+++ b/src/mdaPiano.h
@@ -0,0 +1,122 @@
+//See associated .cpp file for copyright and other info
+
+#ifndef __mdaPiano__
+#define __mdaPiano__
+
+#include <string.h>
+
+#include "audioeffectx.h"
+
+#define NPARAMS 12       //number of parameters
+#define NPROGS   8       //number of programs
+#define NOUTS    2       //number of outputs
+#define NVOICES 32       //max polyphony
+#define SUSTAIN 128
+#define SILENCE 0.0001f  //voice choking
+#define WAVELEN 586348   //wave data bytes
+
+class mdaPianoProgram
+{
+  friend class mdaPiano;
+public:
+	mdaPianoProgram();
+	~mdaPianoProgram() {}
+
+private:
+  float param[NPARAMS];
+  char  name[24];
+};
+
+
+struct VOICE  //voice state
+{
+  VstInt32  delta;  //sample playback
+  VstInt32  frac;
+  VstInt32  pos;
+  VstInt32  end;
+  VstInt32  loop;
+  
+  float env;  //envelope
+  float dec;
+
+  float f0;   //first-order LPF
+  float f1;
+  float ff;
+
+  float outl;
+  float outr;
+  VstInt32  note; //remember what note triggered this
+};
+
+
+struct KGRP  //keygroup
+{
+  VstInt32  root;  //MIDI root note
+  VstInt32  high;  //highest note
+  VstInt32  pos;
+  VstInt32  end;
+  VstInt32  loop;
+};
+
+class mdaPiano : public AudioEffectX
+{
+public:
+	mdaPiano(audioMasterCallback audioMaster);
+	~mdaPiano();
+
+	virtual void process(float **inputs, float **outputs, VstInt32 sampleframes);
+	virtual void processReplacing(float **inputs, float **outputs, VstInt32 sampleframes);
+	virtual VstInt32 processEvents(VstEvents* events);
+
+	virtual void setProgram(VstInt32 program);
+	virtual void setProgramName(char *name);
+	virtual void getProgramName(char *name);
+	virtual void setParameter(VstInt32 index, float value);
+	virtual float getParameter(VstInt32 index);
+	virtual void getParameterLabel(VstInt32 index, char *label);
+	virtual void getParameterDisplay(VstInt32 index, char *text);
+	virtual void getParameterName(VstInt32 index, char *text);
+	virtual void setBlockSize(VstInt32 blockSize);
+  virtual void resume();
+
+	virtual bool getOutputProperties (VstInt32 index, VstPinProperties* properties);
+	virtual bool getProgramNameIndexed (VstInt32 category, VstInt32 index, char* text);
+	virtual bool copyProgram (VstInt32 destination);
+	virtual bool getEffectName (char* name);
+	virtual bool getVendorString (char* text);
+	virtual bool getProductString (char* text);
+	virtual VstInt32 getVendorVersion () {return 1;}
+	virtual VstInt32 canDo (char* text);
+  
+  virtual VstInt32 getNumMidiInputChannels ()  { return 1; }
+
+  VstInt32 guiUpdate;
+  void guiGetDisplay(VstInt32 index, char *label);
+
+private:
+	void update();  //my parameter update
+  void noteOn(VstInt32 note, VstInt32 velocity);
+  void fillpatch(VstInt32 p, char *name, float p0, float p1, float p2, float p3, float p4,
+                 float p5, float p6, float p7, float p8, float p9, float p10,float p11);
+
+  float param[NPARAMS];
+  mdaPianoProgram* programs;
+  float Fs, iFs;
+
+  #define EVENTBUFFER 120
+  #define EVENTS_DONE 99999999
+  VstInt32 notes[EVENTBUFFER + 8];  //list of delta|note|velocity for current block
+
+  ///global internal variables
+  KGRP  kgrp[16];
+  VOICE voice[NVOICES];
+  VstInt32  activevoices, poly, cpos;
+  short *waves;
+  VstInt32  cmax;
+  float *comb, cdep, width, trim;
+  VstInt32  size, sustain;
+  float tune, fine, random, stretch;
+  float muff, muffvel, sizevel, velsens, volume;
+};
+
+#endif