From 3d95a25600b5cab8a7e5245b7a581bd8c8939276 Mon Sep 17 00:00:00 2001
From: Florian Jung <flo@thinkpad.(none)>
Date: Wed, 5 Jan 2011 15:47:55 +0100
Subject: Note-compiler is _mostly_ complete; plus some tiny bugfixes

The note-compiler can read a program-definition and emits a cpp-file
which implements that definition. This implementation is optimized.
HOWEVER, the compiler still does not emit a set_param() function. this
will lead to a linker error because the function is not implemented
(but defined). After adding an empty implementation by hand the emitted
compiles well, and also seems to work when used in the synth.

TODO:
 - implement set_param()
 - compiler must emit a loader-function (which returns a new Note)
 - use that loader function in the synth
---
 note_compiler/templates/ctor.foot    | 11 +++++++++++
 note_compiler/templates/get_sample.1 | 23 +++++++++++++++++++++++
 note_compiler/templates/head.1       | 35 +++++++++++++++++++++++++++++++++++
 note_compiler/templates/head.2       | 11 +++++++++++
 4 files changed, 80 insertions(+)
 create mode 100644 note_compiler/templates/ctor.foot
 create mode 100644 note_compiler/templates/get_sample.1
 create mode 100644 note_compiler/templates/head.1
 create mode 100644 note_compiler/templates/head.2

(limited to 'note_compiler/templates')

diff --git a/note_compiler/templates/ctor.foot b/note_compiler/templates/ctor.foot
new file mode 100644
index 0000000..05d4421
--- /dev/null
+++ b/note_compiler/templates/ctor.foot
@@ -0,0 +1,11 @@
+	portamento_frames=0;
+	set_portamento_frames(pf);
+		
+	set_note(n);
+	freq=dest_freq;
+	set_vel(v);
+	
+	pitchbend=pb;
+	
+	program=prg_no;
+}
diff --git a/note_compiler/templates/get_sample.1 b/note_compiler/templates/get_sample.1
new file mode 100644
index 0000000..3d73052
--- /dev/null
+++ b/note_compiler/templates/get_sample.1
@@ -0,0 +1,23 @@
+fixed_t Note::get_sample()
+{
+	if (freq!=dest_freq)
+	{
+		// the div.by.zero if p_frames=0 is avoided because then the 
+		// if-condition below is always true
+		if (portamento_t>=portamento_frames)
+			freq=dest_freq;
+		else //will only happen if p_t < p_frames -> p_frames is always > 0 -> div. ok
+			freq = old_freq + (dest_freq-old_freq)*portamento_t/portamento_frames;
+		
+		do_ksl();
+		
+		portamento_t++;
+	}
+
+	fixed_t actual_freq=freq*pitchbend >>SCALE;
+
+	fixed_t *temp;
+	temp=old_oscval;   //swap the current and old oscval-pointers
+	old_oscval=oscval;
+	oscval=temp;
+
diff --git a/note_compiler/templates/head.1 b/note_compiler/templates/head.1
new file mode 100644
index 0000000..3d9e903
--- /dev/null
+++ b/note_compiler/templates/head.1
@@ -0,0 +1,35 @@
+#include <jack/jack.h>
+
+#include <cmath>
+
+#include "globals.h"
+#include "defines.h"
+#include "programs.h"
+#include "envelope.h"
+#include "fixed.h"
+#include "filter.h"
+#include "note_skel.h"
+
+using namespace std;
+
+class Note : public NoteSkel
+{
+	public:
+		Note(int n, float v,program_t &prg, jack_nframes_t pf, fixed_t pb, int prg_no);
+		~Note();
+		fixed_t get_sample();
+
+		void release_quickly(jack_nframes_t maxt);
+		void release();
+		void reattack();
+		bool still_active();
+		void set_param(const parameter_t &p, fixed_t v);
+		
+	private:
+		void do_ksl();
+		void do_ksr();
+
+		void recalc_factors();
+		void apply_pfactor();
+
+// member variables begin here
diff --git a/note_compiler/templates/head.2 b/note_compiler/templates/head.2
new file mode 100644
index 0000000..917030c
--- /dev/null
+++ b/note_compiler/templates/head.2
@@ -0,0 +1,11 @@
+// member variables end here
+};
+
+//this function returns the smallest phase_init possible for a
+//given custom_wave which is greater or equal than PHASE_INIT
+#define PHASE_INIT 100
+inline fixed_t init_custom_osc_phase(int len, fixed_t sr)
+{
+	return ( (fixed_t(ceil( float(PHASE_INIT) * sr / len / ONE )) *len << (2*SCALE)) / sr);
+}
+
-- 
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