Define an interface and a skeleton for class Note

3 files changed, 137 insertions, 0 deletions

diff --git a/synth/TODO b/synth/TODO
index d507df0..d5f5534 100644
--- a/synth/TODO
+++ b/synth/TODO
@@ -1,5 +1,6 @@
 TODO für den synth
    o notes compilieren und als .so-datei laden
+   o programme on-the-fly (um)laden
  
    o RAM aufräumen?
    
diff --git a/synth/note_skel.cpp b/synth/note_skel.cpp
new file mode 100644
index 0000000..acc580f
--- /dev/null
+++ b/synth/note_skel.cpp
@@ -0,0 +1,82 @@
+#include <cmath>
+
+#include "note_skel.h"
+#include "globals.h"
+#include "defines.h"
+
+using namespace std;
+
+Note::Note(int n, float v, program_t &prg, jack_nframes_t pf, fixed_t pb, int prg_no)
+{	
+	curr_prg=&prg;
+		
+	portamento_frames=0;
+	set_portamento_frames(pf);
+		
+	set_note(n);
+	freq=dest_freq;
+	set_vel(v);
+	do_ksl();
+	
+	pitchbend=pb;
+	
+	program=prg_no;
+}
+
+void NoteSkel::set_pitchbend(fixed_t pb)
+{
+	pitchbend=pb;
+}
+
+void NoteSkel::set_freq(float f)
+{
+	old_freq=freq;
+	dest_freq=f*ONE;
+	portamento_t=0;
+	
+	do_ksr();
+}
+
+void NoteSkel::set_freq(float f, bool do_port)
+{
+	set_freq(f);
+	
+	if (!do_port)
+		old_freq=dest_freq;
+}
+
+void NoteSkel::set_note(int n)
+{
+	note=n;
+	set_freq(440.0*pow(2.0,(float)(n-69)/12.0));
+}
+
+void NoteSkel::set_note(int n, bool do_port)
+{
+	note=n;
+	set_freq(440.0*pow(2.0,(float)(n-69)/12.0), do_port);
+}
+
+int NoteSkel::get_note()
+{
+	return note;
+}
+
+void NoteSkel::set_vel(float v)
+{
+	vel=v*ONE;
+	
+	recalc_factors();
+	apply_pfactor();
+}
+
+void NoteSkel::set_portamento_frames(jack_nframes_t t)
+{
+	portamento_frames=t;
+	portamento_t=0;
+}
+
+int NoteSkel::get_program()
+{
+	return program;
+}
diff --git a/synth/note_skel.h b/synth/note_skel.h
new file mode 100644
index 0000000..b36d28c
--- /dev/null
+++ b/synth/note_skel.h
@@ -0,0 +1,54 @@
+#ifndef __NOTE_SKEL_H__
+#define __NOTE_SKEL_H__
+
+#include <jack/jack.h>
+
+#include "programs.h"
+#include "fixed.h"
+
+class NoteSkel
+{
+	public:
+		NoteSkel(int n, float v,program_t &prg, jack_nframes_t pf, fixed_t pb, int prg_no);
+		virtual ~NoteSkel()=0;
+		virtual fixed_t get_sample()=0;
+
+		int get_program();
+		int get_note();
+		void set_note(int n);
+		void set_note(int n, bool do_port);
+		void set_freq(float f);
+		void set_freq(float f, bool do_port);
+		void set_pitchbend(fixed_t pb);
+		void set_vel(float v);
+		void set_portamento_frames(jack_nframes_t f);
+
+		virtual void release_quickly(jack_nframes_t maxt)=0;
+		virtual void release()=0;
+		virtual void reattack()=0;
+		virtual bool still_active()=0;
+
+		virtual void set_param(const parameter_t &p, fixed_t v)=0;
+		
+	private:
+		virtual void do_ksl()=0;
+		virtual void do_ksr()=0;
+
+		virtual void recalc_factors()=0;
+		virtual void apply_pfactor()=0;
+
+		fixed_t freq, dest_freq, old_freq;
+		fixed_t vel;
+		jack_nframes_t portamento_t, portamento_frames;
+		
+		pfactor_value_t pfactor;
+		
+		int note;
+		int program;
+		program_t *curr_prg;
+		
+		fixed_t pitchbend;
+};
+
+
+#endif