Add preliminary (library side only) LV2 port of MDA (open-sourced VST plugins).

git-svn-id: http://svn.drobilla.net/lad/mda-lv2@1321 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 123 insertions, 0 deletions

diff --git a/src/mdaEPiano.h b/src/mdaEPiano.h
new file mode 100644
index 0000000..feb13e3
--- /dev/null
+++ b/src/mdaEPiano.h
@@ -0,0 +1,123 @@
+//See associated .cpp file for copyright and other info
+
+#ifndef __mdaEPiano__
+#define __mdaEPiano__
+
+#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 422414   //wave data bytes
+
+class mdaEPianoProgram
+{
+  friend class mdaEPiano;
+public:
+  mdaEPianoProgram() {}
+	~mdaEPianoProgram() {}
+
+private:
+  float param[NPARAMS];
+  char  name[24];
+};
+
+
+struct VOICE  //voice state
+{
+  long  delta;  //sample playback
+  long  frac;
+  long  pos;
+  long  end;
+  long  loop;
+  
+  float env;  //envelope
+  float dec;
+
+  float f0;   //first-order LPF
+  float f1;
+  float ff;
+
+  float outl;
+  float outr;
+  long  note; //remember what note triggered this
+};
+
+
+struct KGRP  //keygroup
+{
+  long  root;  //MIDI root note
+  long  high;  //highest note
+  long  pos;
+  long  end;
+  long  loop;
+};
+
+class mdaEPiano : public AudioEffectX
+{
+public:
+	mdaEPiano(audioMasterCallback audioMaster);
+	~mdaEPiano();
+
+	virtual void process(float **inputs, float **outputs, LvzInt32 sampleframes);
+	virtual void processReplacing(float **inputs, float **outputs, LvzInt32 sampleframes);
+	virtual LvzInt32 processEvents(LvzEvents* events);
+
+	virtual void setProgram(LvzInt32 program);
+	virtual void setProgramName(char *name);
+	virtual void getProgramName(char *name);
+	virtual void setParameter(LvzInt32 index, float value);
+	virtual float getParameter(LvzInt32 index);
+	virtual void getParameterLabel(LvzInt32 index, char *label);
+	virtual void getParameterDisplay(LvzInt32 index, char *text);
+	virtual void getParameterName(LvzInt32 index, char *text);
+	virtual void setBlockSize(LvzInt32 blockSize);
+  virtual void resume();
+
+	virtual bool getOutputProperties (LvzInt32 index, LvzPinProperties* properties);
+	virtual bool getProgramNameIndexed (LvzInt32 category, LvzInt32 index, char* text);
+	virtual bool copyProgram (LvzInt32 destination);
+	virtual bool getEffectName (char* name);
+	virtual bool getVendorString (char* text);
+	virtual bool getProductString (char* text);
+	virtual LvzInt32 getVendorVersion () {return 1;}
+	virtual LvzInt32 canDo (char* text);
+
+	virtual LvzInt32 getNumMidiInputChannels ()  { return 1; }
+
+  long guiUpdate;
+  void guiGetDisplay(LvzInt32 index, char *label);
+
+private:
+	void update();  //my parameter update
+  void noteOn(long note, long velocity);
+  void fillpatch(long p, const 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];
+  mdaEPianoProgram* programs;
+  float Fs, iFs;
+
+  #define EVENTBUFFER 120
+  #define EVENTS_DONE 99999999
+  long notes[EVENTBUFFER + 8];  //list of delta|note|velocity for current block
+
+  ///global internal variables
+  KGRP  kgrp[34];
+  VOICE voice[NVOICES];
+  long  activevoices, poly;
+  short *waves;
+  float width;
+  long  size, sustain;
+  float lfo0, lfo1, dlfo, lmod, rmod;
+  float treb, tfrq, tl, tr;
+  float tune, fine, random, stretch, overdrive;
+  float muff, muffvel, sizevel, velsens, volume, modwhl;
+};
+
+#endif