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-rw-r--r--src/mvclpf24.cc439
1 files changed, 439 insertions, 0 deletions
diff --git a/src/mvclpf24.cc b/src/mvclpf24.cc
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--- /dev/null
+++ b/src/mvclpf24.cc
@@ -0,0 +1,439 @@
+/*
+ Copyright (C) 2003-2008 Fons Adriaensen <fons@kokkinizita.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+
+#include <stdio.h>
+#include <math.h>
+#include "mvclpf24.h"
+#include "exp2ap.h"
+
+
+static const float lg2midc = log2f(261.63f);
+
+
+void Ladspa_Moogvcf1::setport (PortIndex port, PortData *data)
+{
+ _port [port] = (float*)data;
+}
+
+
+void Ladspa_Moogvcf1::active (bool act)
+{
+ _c1 = _c2 = _c3 = _c4 = _c5 = _w = _r = 0;
+}
+
+
+void Ladspa_Moogvcf1::runproc (SampleCount len, bool add)
+{
+ int k;
+ float *p0, *p1, *p2, *p3, *p4;
+ float c1, c2, c3, c4, c5;
+ float g0, g1, r, dr, w, dw, x, t;
+
+ p0 = _port [A_INPUT];
+ p1 = _port [A_OUTPUT];
+ p2 = _port [A_FREQ] - 1;
+ p3 = _port [A_FMOD] - 1;
+ p4 = _port [A_RESO] - 1;
+ g0 = exp2ap (0.1661f * _port [C_IPGAIN][0]) / 4;
+ g1 = exp2ap (0.1661f * _port [C_OPGAIN][0]) * 4;
+ if (add) g1 *= _gain;
+
+ c1 = _c1 + 1e-6f;
+ c2 = _c2;
+ c3 = _c3;
+ c4 = _c4;
+ c5 = _c5;
+ w = _w;
+ r = _r;
+
+ do
+ {
+ k = (len > 24) ? 16 : len;
+ p2 += k;
+ p3 += k;
+ p4 += k;
+ len -= k;
+
+ t = exp2ap (_port [C_FMODG][0] * *p3 + log2f(_port [C_FREQ][0]) - lg2midc + *p2 + 10.82f) / _fsam;
+ if (t < 0.8f) t *= 1 - 0.4f * t - 0.125f * t * t;
+ else
+ {
+ t *= 0.6f;
+ if (t > 0.92f) t = 0.92f;
+ }
+ dw = (t - w) / k;
+
+ t = _port [C_RESOG][0] * *p4 + _port [C_RESO][0];
+ if (r > 1) r = 1;
+ if (r < 0) r = 0;
+ dr = (t - r) / k;
+
+ while (k--)
+ {
+ w += dw;
+ r += dr;
+ x = -4.2 * r * c5 + *p0++ * g0 + 1e-10f;
+ t = c1 / (1 + fabsf (c1));
+ c1 += w * (x - t);
+ x = c1 / (1 + fabsf (c1));
+ c2 += w * (x - c2);
+ c3 += w * (c2 - c3);
+ c4 += w * (c3 - c4);
+ if (add) *p1++ += g1 * c4;
+ else *p1++ = g1 * c4;
+ c5 += 0.5f * (c4 - c5);
+ }
+ }
+ while (len);
+
+ _c1 = c1;
+ _c2 = c2;
+ _c3 = c3;
+ _c4 = c4;
+ _c5 = c5;
+ _w = w;
+ _r = r;
+}
+
+
+
+void Ladspa_Moogvcf2::setport (PortIndex port, PortData *data)
+{
+ _port [port] = (float*)data;
+}
+
+
+void Ladspa_Moogvcf2::active (bool act)
+{
+ _c1 = _c2 = _c3 = _c4 = _c5 = _w = _r = 0;
+}
+
+
+void Ladspa_Moogvcf2::runproc (SampleCount len, bool add)
+{
+ int k;
+ float *p0, *p1, *p2, *p3, *p4;
+ float c1, c2, c3, c4, c5;
+ float g0, g1, r, dr, w, dw, x, t;
+
+ p0 = _port [A_INPUT];
+ p1 = _port [A_OUTPUT];
+ p2 = _port [A_FREQ] - 1;
+ p3 = _port [A_FMOD] - 1;
+ p4 = _port [A_RESO] - 1;
+ g0 = exp2ap (0.1661f * _port [C_IPGAIN][0]) / 4;
+ g1 = exp2ap (0.1661f * _port [C_OPGAIN][0]) * 4;
+ if (add) g1 *= _gain;
+
+ c1 = _c1 + 1e-6f;
+ c2 = _c2;
+ c3 = _c3;
+ c4 = _c4;
+ c5 = _c5;
+ w = _w;
+ r = _r;
+
+ do
+ {
+ k = (len > 24) ? 16 : len;
+ p2 += k;
+ p3 += k;
+ p4 += k;
+ len -= k;
+
+ t = exp2ap (_port [C_FMODG][0] * *p3 + log2f(_port [C_FREQ][0]) - lg2midc + *p2 + 10.71f) / _fsam;
+ if (t < 0.8f) t *= 1 - 0.4f * t - 0.125f * t * t;
+ else
+ {
+ t *= 0.6f;
+ if (t > 0.92f) t = 0.92f;
+ }
+ dw = (t - w) / k;
+
+ t = _port [C_RESOG][0] * *p4 + _port [C_RESO][0];
+ if (t > 1) t = 1;
+ if (t < 0) t = 0;
+ dr = (t - r) / k;
+
+ while (k--)
+ {
+ w += dw;
+ r += dr;
+
+ x = -4.5f * r * c5 + *p0++ * g0 + 1e-10f;
+// x = tanhf (x);
+ x /= sqrtf (1 + x * x);
+ c1 += w * (x - c1) / (1 + c1 * c1);
+ c2 += w * (c1 - c2) / (1 + c2 * c2);
+ c3 += w * (c2 - c3) / (1 + c3 * c3);
+ c4 += w * (c3 - c4) / (1 + c4 * c4);
+
+ if (add) *p1++ += g1 * (c4);
+ else *p1++ = g1 * (c4);
+ c5 += 0.5f * (c4 - c5);
+ }
+ }
+ while (len);
+
+ _c1 = c1;
+ _c2 = c2;
+ _c3 = c3;
+ _c4 = c4;
+ _c5 = c5;
+ _w = w;
+ _r = r;
+}
+
+
+
+void Ladspa_Moogvcf3::setport (PortIndex port, PortData *data)
+{
+ _port [port] = (float*)data;
+}
+
+
+void Ladspa_Moogvcf3::active (bool act)
+{
+ _c1 = _c2 = _c3 = _c4 = _c5 = _w = _r = 0;
+}
+
+
+void Ladspa_Moogvcf3::runproc (SampleCount len, bool add)
+{
+ int k;
+ float *p0, *p1, *p2, *p3, *p4;
+ float c1, c2, c3, c4, c5;
+ float g0, g1, r, dr, w, dw, x, t, d;
+
+ p0 = _port [A_INPUT];
+ p1 = _port [A_OUTPUT];
+ p2 = _port [A_FREQ] - 1;
+ p3 = _port [A_FMOD] - 1;
+ p4 = _port [A_RESO] - 1;
+ g0 = exp2ap (0.1661f * _port [C_IPGAIN][0]) / 4;
+ g1 = exp2ap (0.1661f * _port [C_OPGAIN][0]) * 4;
+ if (add) g1 *= _gain;
+
+ c1 = _c1;
+ c2 = _c2;
+ c3 = _c3;
+ c4 = _c4;
+ c5 = _c5;
+ w = _w;
+ r = _r;
+
+ do
+ {
+ k = (len > 24) ? 16 : len;
+ p2 += k;
+ p3 += k;
+ p4 += k;
+ len -= k;
+
+ t = exp2ap (_port [C_FMODG][0] * *p3 + log2f(_port [C_FREQ][0]) - lg2midc + *p2 + 9.70f) / _fsam;
+ if (t < 0.75f) t *= 1.005f - t * (0.624f - t * (0.65f - t * 0.54f));
+ else
+ {
+ t *= 0.6748f;
+ if (t > 0.82f) t = 0.82f;
+ }
+ dw = (t - w) / k;
+
+ t = _port [C_RESOG][0] * *p4 + _port [C_RESO][0];
+ if (t > 1) t = 1;
+ if (t < 0) t = 0;
+ dr = (t - r) / k;
+
+ while (k--)
+ {
+ w += dw;
+ r += dr;
+
+ x = *p0 * g0 - (4.3f - 0.2f * w) * r * c5 + 1e-10f;
+// x = tanhf (x);
+ x /= sqrtf (1 + x * x);
+ d = w * (x - c1) / (1 + c1 * c1);
+ x = c1 + 0.77f * d;
+ c1 = x + 0.23f * d;
+ d = w * (x - c2) / (1 + c2 * c2);
+ x = c2 + 0.77f * d;
+ c2 = x + 0.23f * d;
+ d = w * (x - c3) / (1 + c3 * c3);
+ x = c3 + 0.77f * d;
+ c3 = x + 0.23f * d;
+ d = w * (x - c4);
+ x = c4 + 0.77f * d;
+ c4 = x + 0.23f * d;
+ c5 += 0.85f * (c4 - c5);
+
+ x = *p0++ * g0 -(4.3f - 0.2f * w) * r * c5;
+// x = tanhf (x);
+ x /= sqrtf (1 + x * x);
+ d = w * (x - c1) / (1 + c1 * c1);
+ x = c1 + 0.77f * d;
+ c1 = x + 0.23f * d;
+ d = w * (x - c2) / (1 + c2 * c2);
+ x = c2 + 0.77f * d;
+ c2 = x + 0.23f * d;
+ d = w * (x - c3) / (1 + c3 * c3);
+ x = c3 + 0.77f * d;
+ c3 = x + 0.23f * d;
+ d = w * (x - c4);
+ x = c4 + 0.77f * d;
+ c4 = x + 0.23f * d;
+ c5 += 0.85f * (c4 - c5);
+
+ if (add) *p1++ += g1 * c4;
+ else *p1++ = g1 * c4;
+ }
+ }
+ while (len);
+
+ _c1 = c1;
+ _c2 = c2;
+ _c3 = c3;
+ _c4 = c4;
+ _c5 = c5;
+ _w = w;
+ _r = r;
+}
+
+
+void Ladspa_Moogvcf4::setport (PortIndex port, PortData *data)
+{
+ _port [port] = (float*)data;
+}
+
+
+void Ladspa_Moogvcf4::active (bool act)
+{
+ _c1 = _c2 = _c3 = _c4 = _c5 = _w = _r = 0;
+}
+
+
+void Ladspa_Moogvcf4::runproc (SampleCount len, bool add)
+{
+ int k, op;
+ float *p0, *p1, *p2, *p3, *p4;
+ float c1, c2, c3, c4, c5;
+ float g0, g1, r, dr, w, dw, x, t, d, y;
+
+ p0 = _port [A_INPUT];
+ p1 = _port [A_OUTPUT];
+ p2 = _port [A_FREQ] - 1;
+ p3 = _port [A_FMOD] - 1;
+ p4 = _port [A_RESO] - 1;
+ g0 = exp2ap (0.1661f * _port [C_IPGAIN][0]) / 4;
+ g1 = exp2ap (0.1661f * _port [C_OPGAIN][0]) * 4;
+ op = (int)(floorf (_port [C_LPFILT][0] + 0.5));
+ if (add) g1 *= _gain;
+
+ c1 = _c1 + 1e-6f;
+ c2 = _c2;
+ c3 = _c3;
+ c4 = _c4;
+ c5 = _c5;
+ w = _w;
+ r = _r;
+
+ do
+ {
+ k = (len > 24) ? 16 : len;
+ p2 += k;
+ p3 += k;
+ p4 += k;
+ len -= k;
+
+ t = exp2ap (_port [C_FMODG][0] * *p3 + log2f(_port [C_FREQ][0]) - lg2midc + *p2 + 9.70f) / _fsam;
+ if (t < 0.75f) t *= 1.005f - t * (0.624f - t * (0.65f - t * 0.54f));
+ else
+ {
+ t *= 0.6748f;
+ if (t > 0.82f) t = 0.82f;
+ }
+ dw = (t - w) / k;
+
+ t = _port [C_RESOG][0] * *p4 + _port [C_RESO][0];
+ if (t > 1) t = 1;
+ if (t < 0) t = 0;
+ dr = (t - r) / k;
+
+ while (k--)
+ {
+ w += dw;
+ r += dr;
+
+ x = *p0 * g0 - (4.3f - 0.2f * w) * r * c5 + 1e-10f;
+// x = tanhf (x);
+ x /= sqrtf (1 + x * x);
+ d = w * (x - c1) / (1 + c1 * c1);
+ x = c1 + 0.77f * d;
+ c1 = x + 0.23f * d;
+ d = w * (x - c2) / (1 + c2 * c2);
+ x = c2 + 0.77f * d;
+ c2 = x + 0.23f * d;
+ d = w * (x - c3) / (1 + c3 * c3);
+ x = c3 + 0.77f * d;
+ c3 = x + 0.23f * d;
+ d = w * (x - c4);
+ x = c4 + 0.77f * d;
+ c4 = x + 0.23f * d;
+ c5 += 0.85f * (c4 - c5);
+
+ x = y = *p0++ * g0 -(4.3f - 0.2f * w) * r * c5;
+// x = tanhf (x);
+ x /= sqrtf (1 + x * x);
+ d = w * (x - c1) / (1 + c1 * c1);
+ x = c1 + 0.77f * d;
+ c1 = x + 0.23f * d;
+ d = w * (x - c2) / (1 + c2 * c2);
+ x = c2 + 0.77f * d;
+ c2 = x + 0.23f * d;
+ d = w * (x - c3) / (1 + c3 * c3);
+ x = c3 + 0.77f * d;
+ c3 = x + 0.23f * d;
+ d = w * (x - c4);
+ x = c4 + 0.77f * d;
+ c4 = x + 0.23f * d;
+ c5 += 0.85f * (c4 - c5);
+
+ switch (op)
+ {
+ case 1: y = c1; break;
+ case 2: y = c2; break;
+ case 3: y = c3; break;
+ case 4: y = c4; break;
+ }
+
+ if (add) *p1++ += g1 * y;
+ else *p1++ = g1 * y;
+ }
+ }
+ while (len);
+
+ _c1 = c1;
+ _c2 = c2;
+ _c3 = c3;
+ _c4 = c4;
+ _c5 = c5;
+ _w = w;
+ _r = r;
+}
+
+
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