1 files changed, 65 insertions, 0 deletions
diff --git a/synth/envelope.h b/synth/envelope.h
new file mode 100644
index 0000000..e0d3502
--- /dev/null
+++ b/synth/envelope.h
@@ -0,0 +1,65 @@
+#ifndef __ENVELOPE_H__
+#define __ENVELOPE_H__
+
+#include <jack/jack.h>
+
+#include "programs.h"
+#include "fixed.h"
+
+
+class Envelope
+{
+	public:
+		Envelope(jack_nframes_t a, jack_nframes_t d, fixed_t s, jack_nframes_t r, bool h);
+		Envelope(env_settings_t s);
+		void release_key();
+		void reattack();
+		fixed_t get_level();
+		bool still_active();
+		void set_hold(bool h);		
+		void set_attack(jack_nframes_t a);
+		void set_decay(jack_nframes_t d);
+		void set_sustain(fixed_t s);
+		void set_release(jack_nframes_t r);
+		void set_max(fixed_t m)
+		{
+			max=m;
+			if (max>ONE) max=ONE;
+			else if (max<0) max=0;
+		}
+		void set_ratefactor(double factor);
+		
+		bool get_hold() { return hold; }
+		jack_nframes_t get_attack() { return attack_orig; }
+		jack_nframes_t get_decay() { return decay_orig; }
+		fixed_t get_sustain() { return sustain; }
+		jack_nframes_t get_release() { return release_orig; }
+		
+		
+	private:
+		fixed_t max;
+		jack_nframes_t attack;
+		jack_nframes_t decay;
+		jack_nframes_t release;
+		jack_nframes_t attack_orig;
+		jack_nframes_t decay_orig;
+		jack_nframes_t release_orig;
+		jack_nframes_t rel_t;
+		fixed_t sustain;
+		fixed_t sustain_orig;
+		fixed_t level;
+		bool hold;
+		jack_nframes_t t;
+		fixed_t ratefactor;
+		
+		enum
+		{
+			ATTACK,
+			DECAY,
+			HOLD,
+			RELEASE,
+			DONE
+		} state;
+};
+
+#endif