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authorRobert Jonsson <spamatica@gmail.com>2010-10-13 19:34:22 +0000
committerRobert Jonsson <spamatica@gmail.com>2010-10-13 19:34:22 +0000
commit8a2c2824a59d7644e13bc52c9a0ecbd641f21f95 (patch)
tree064ad3f2bf8daab0ad27b128abd86a9bbdb1e496 /muse2/plugins/freeverb/allpass.h
parenta27706d9629e8b592cca4659f865b70adef24e6d (diff)
new branch muse2, first checkin
Diffstat (limited to 'muse2/plugins/freeverb/allpass.h')
-rw-r--r--muse2/plugins/freeverb/allpass.h50
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diff --git a/muse2/plugins/freeverb/allpass.h b/muse2/plugins/freeverb/allpass.h
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+// Allpass filter declaration
+//
+// Written by Jezar at Dreampoint, June 2000
+// http://www.dreampoint.co.uk
+// This code is public domain
+
+#ifndef _allpass_
+#define _allpass_
+#include "denormals.h"
+
+//---------------------------------------------------------
+// allpass
+//---------------------------------------------------------
+
+class allpass
+ {
+ float feedback;
+ float *buffer;
+ int bufsize;
+ int bufidx;
+
+ public:
+ allpass() { bufidx = 0; }
+ void setbuffer(float *buf, int size) {
+ buffer = buf;
+ bufsize = size;
+ }
+ float process(float input) {
+ float bufout = buffer[bufidx];
+ undenormalise(bufout);
+ float output = -input + bufout;
+ buffer[bufidx] = input + (bufout*feedback);
+ if (++bufidx >= bufsize)
+ bufidx = 0;
+// bufidx = ++bufidx % bufsize;
+ return output;
+ }
+ void mute() {
+ for (int i=0; i<bufsize; i++)
+ buffer[i]=0;
+ }
+ void setfeedback(float val) { feedback = val; }
+ float getfeedback() { return feedback; }
+ };
+
+
+// Big to inline - but crucial for speed
+
+
+#endif//_allpass