From e40fc849149dd97c248866a4a1d026dda5e57b62 Mon Sep 17 00:00:00 2001
From: Robert Jonsson <spamatica@gmail.com>
Date: Mon, 7 Mar 2011 19:01:11 +0000
Subject: clean3

---
 attic/muse_qt4_evolution/synti/organ/reverb.cpp | 163 ++++++++++++++++++++++++
 1 file changed, 163 insertions(+)
 create mode 100644 attic/muse_qt4_evolution/synti/organ/reverb.cpp

(limited to 'attic/muse_qt4_evolution/synti/organ/reverb.cpp')

diff --git a/attic/muse_qt4_evolution/synti/organ/reverb.cpp b/attic/muse_qt4_evolution/synti/organ/reverb.cpp
new file mode 100644
index 00000000..72775bc5
--- /dev/null
+++ b/attic/muse_qt4_evolution/synti/organ/reverb.cpp
@@ -0,0 +1,163 @@
+//=========================================================
+//  MusE
+//  Linux Music Editor
+//  $Id:$
+//
+//  based on "freeverb" written by Jezar at Dreampoint,
+//    June 2000
+//
+//  (C) Copyright 2007 Werner Schweer (ws@seh.de)
+//=========================================================
+
+#include "reverb.h"
+
+//---------------------------------------------------------
+//   Reverb
+//---------------------------------------------------------
+
+Reverb::Reverb()
+      {
+	// Tie the components to their buffers
+	combL[0].setbuffer(bufcombL1,combtuningL1);
+	combR[0].setbuffer(bufcombR1,combtuningR1);
+	combL[1].setbuffer(bufcombL2,combtuningL2);
+	combR[1].setbuffer(bufcombR2,combtuningR2);
+	combL[2].setbuffer(bufcombL3,combtuningL3);
+	combR[2].setbuffer(bufcombR3,combtuningR3);
+	combL[3].setbuffer(bufcombL4,combtuningL4);
+	combR[3].setbuffer(bufcombR4,combtuningR4);
+	combL[4].setbuffer(bufcombL5,combtuningL5);
+	combR[4].setbuffer(bufcombR5,combtuningR5);
+	combL[5].setbuffer(bufcombL6,combtuningL6);
+	combR[5].setbuffer(bufcombR6,combtuningR6);
+	combL[6].setbuffer(bufcombL7,combtuningL7);
+	combR[6].setbuffer(bufcombR7,combtuningR7);
+	combL[7].setbuffer(bufcombL8,combtuningL8);
+	combR[7].setbuffer(bufcombR8,combtuningR8);
+	allpassL[0].setbuffer(bufallpassL1,allpasstuningL1);
+	allpassR[0].setbuffer(bufallpassR1,allpasstuningR1);
+	allpassL[1].setbuffer(bufallpassL2,allpasstuningL2);
+	allpassR[1].setbuffer(bufallpassR2,allpasstuningR2);
+	allpassL[2].setbuffer(bufallpassL3,allpasstuningL3);
+	allpassR[2].setbuffer(bufallpassR3,allpasstuningR3);
+	allpassL[3].setbuffer(bufallpassL4,allpasstuningL4);
+	allpassR[3].setbuffer(bufallpassR4,allpasstuningR4);
+
+	// Set default values
+	allpassL[0].setfeedback(0.5f);
+	allpassR[0].setfeedback(0.5f);
+	allpassL[1].setfeedback(0.5f);
+	allpassR[1].setfeedback(0.5f);
+	allpassL[2].setfeedback(0.5f);
+	allpassR[2].setfeedback(0.5f);
+	allpassL[3].setfeedback(0.5f);
+	allpassR[3].setfeedback(0.5f);
+
+	setRoomSize(.5);
+      setMix(.5);
+	setdamp(.5);
+	setwidth(initialwidth);
+
+	// Buffer will be full of rubbish - so we MUST mute them
+
+	for (int i = 0; i < numcombs; i++) {
+		combL[i].mute();
+		combR[i].mute();
+            }
+	for (int i=0;i<numallpasses;i++) {
+		allpassL[i].mute();
+		allpassR[i].mute();
+            }
+      }
+
+//---------------------------------------------------------
+//   update
+//    Recalculate internal values after parameter change
+//---------------------------------------------------------
+
+void Reverb::update()
+      {
+      roomsize1 = roomsize;
+	damp1     = damp;
+	gain      = fixedgain;
+
+	for (int i = 0; i < numcombs; i++) {
+		combL[i].setfeedback(roomsize1);
+		combR[i].setfeedback(roomsize1);
+            }
+
+	for (int i = 0; i < numcombs; i++) {
+		combL[i].setdamp(damp1);
+		combR[i].setdamp(damp1);
+            }
+      }
+
+//---------------------------------------------------------
+//   setroomsize
+//---------------------------------------------------------
+
+void Reverb::setRoomSize(float value)
+      {
+	roomsize = (value*scaleroom) + offsetroom;
+	update();
+      }
+
+//---------------------------------------------------------
+//   setdamp
+//---------------------------------------------------------
+
+void Reverb::setdamp(float value)
+      {
+	damp = value*scaledamp;
+	update();
+      }
+
+//---------------------------------------------------------
+//   setwidth
+//---------------------------------------------------------
+
+void Reverb::setwidth(float value)
+      {
+	width = value;
+	update();
+      }
+
+//---------------------------------------------------------
+//   setMix
+//---------------------------------------------------------
+
+void Reverb::setMix(float value)
+      {
+      wetLevel = value;
+      }
+
+//---------------------------------------------------------
+//   process
+//---------------------------------------------------------
+
+void Reverb::process(float* l, float* r, int n)
+      {
+      float wet = wetLevel;
+      float dry = 1.0 - wetLevel;
+
+	for (int i = 0; i < n; ++i) {
+		float outL  = 0.0;
+		float outR  = 0.0;
+		float input = (l[i] + r[i]) * gain;
+
+		// Accumulate comb filters in parallel
+		for (int k = 0; k < numcombs; k++) {
+			outL += combL[k].process(input);
+			outR += combR[k].process(input);
+		      }
+
+		// Feed through allpasses in series
+		for (int k = 0; k < numallpasses; k++) {
+			outL = allpassL[k].process(outL);
+			outR = allpassR[k].process(outR);
+		      }
+		l[i] = outL * wet + l[i] * dry;
+		r[i] = outR * wet + r[i] * dry;
+	      }
+      }
+
-- 
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