aboutsummaryrefslogtreecommitdiffstats
path: root/src/mdaDynamics.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/mdaDynamics.cpp')
-rw-r--r--src/mdaDynamics.cpp343
1 files changed, 343 insertions, 0 deletions
diff --git a/src/mdaDynamics.cpp b/src/mdaDynamics.cpp
new file mode 100644
index 0000000..53651f9
--- /dev/null
+++ b/src/mdaDynamics.cpp
@@ -0,0 +1,343 @@
+/*
+ Copyright 2008-2011 David Robillard <http://drobilla.net>
+ Copyright 1999-2000 Paul Kellett (Maxim Digital Audio)
+
+ This 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 3 of the License,
+ or (at your option) any later version.
+
+ This software 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 software. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "mdaDynamics.h"
+
+#include <math.h>
+
+AudioEffect *createEffectInstance(audioMasterCallback audioMaster)
+{
+ return new mdaDynamics(audioMaster);
+}
+
+mdaDynamics::mdaDynamics(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, 1, 10) // 1 program, 4 parameters
+{
+ fParam1 = (float)0.60; //thresh ///Note : special version for ardislarge
+ fParam2 = (float)0.40; //ratio
+ fParam3 = (float)0.10; //level ///was 0.6
+ fParam4 = (float)0.18; //attack
+ fParam5 = (float)0.55; //release
+ fParam6 = (float)1.00; //Limiter
+ fParam7 = (float)0.00; //gate thresh
+ fParam8 = (float)0.10; //gate attack
+ fParam9 = (float)0.50; //gate decay
+ fParam10= (float)1.00; //fx mix
+ thr = rat = env = env2 = att = rel = trim = lthr = xthr = xrat = dry = 0.0f;
+ genv = gatt = irel = 0.0f;
+ mode = 0;
+
+ setNumInputs(2); // stereo in
+ setNumOutputs(2); // stereo out
+ setUniqueID("mdaDynamics"); // identify
+ DECLARE_LVZ_DEPRECATED(canMono) ();
+ canProcessReplacing(); // supports both accumulating and replacing output
+ strcpy(programName, "Dynamics"); // default program name
+
+ setParameter(6, 0.f); //initial settings
+}
+
+bool mdaDynamics::getProductString(char* text) { strcpy(text, "MDA Dynamics"); return true; }
+bool mdaDynamics::getVendorString(char* text) { strcpy(text, "mda"); return true; }
+bool mdaDynamics::getEffectName(char* name) { strcpy(name, "Dynamics"); return true; }
+
+mdaDynamics::~mdaDynamics()
+{
+ // nothing to do here
+}
+
+void mdaDynamics::setProgramName(char *name)
+{
+ strcpy(programName, name);
+}
+
+void mdaDynamics::getProgramName(char *name)
+{
+ strcpy(name, programName);
+}
+
+bool mdaDynamics::getProgramNameIndexed (int32_t category, int32_t index, char* name)
+{
+ if (index == 0)
+ {
+ strcpy(name, programName);
+ return true;
+ }
+ return false;
+}
+
+void mdaDynamics::setParameter(int32_t index, float value)
+{
+ switch(index)
+ {
+ case 0: fParam1 = value; break;
+ case 1: fParam2 = value; break;
+ case 2: fParam3 = value; break;
+ case 3: fParam4 = value; break;
+ case 4: fParam5 = value; break;
+ case 5: fParam6 = value; break;
+ case 6: fParam7 = value; break;
+ case 7: fParam8 = value; break;
+ case 8: fParam9 = value; break;
+ case 9: fParam10= value; break;
+ }
+ //calcs here
+ mode=0;
+ thr = (float)pow(10.f, 2.f * fParam1 - 2.f);
+ rat = 2.5f * fParam2 - 0.5f;
+ if(rat>1.0) { rat = 1.f + 16.f*(rat-1.f) * (rat - 1.f); mode = 1; }
+ if(rat<0.0) { rat = 0.6f*rat; mode=1; }
+ trim = (float)pow(10.f, 2.f * fParam3); //was - 1.f);
+ att = (float)pow(10.f, -0.002f - 2.f * fParam4);
+ rel = (float)pow(10.f, -2.f - 3.f * fParam5);
+
+ if(fParam6>0.98) lthr=0.f; //limiter
+ else { lthr=0.99f*(float)pow(10.0f,int(30.0*fParam6 - 20.0)/20.f);
+ mode=1; }
+
+ if(fParam7<0.02) { xthr=0.f; } //expander
+ else { xthr=(float)pow(10.f,3.f * fParam7 - 3.f); mode=1; }
+ xrat = 1.f - (float)pow(10.f, -2.f - 3.3f * fParam9);
+ irel = (float)pow(10.0,-2.0/getSampleRate());
+ gatt = (float)pow(10.f, -0.002f - 3.f * fParam8);
+
+ if(rat<0.0f && thr<0.1f) rat *= thr*15.f;
+
+ dry = 1.0f - fParam10; trim *= fParam10; //fx mix
+}
+
+float mdaDynamics::getParameter(int32_t index)
+{
+ float v=0;
+
+ switch(index)
+ {
+ case 0: v = fParam1; break;
+ case 1: v = fParam2; break;
+ case 2: v = fParam3; break;
+ case 3: v = fParam4; break;
+ case 4: v = fParam5; break;
+ case 5: v = fParam6; break;
+ case 6: v = fParam7; break;
+ case 7: v = fParam8; break;
+ case 8: v = fParam9; break;
+ case 9: v = fParam10; break;
+ }
+ return v;
+}
+
+void mdaDynamics::getParameterName(int32_t index, char *label)
+{
+ switch(index)
+ {
+ case 0: strcpy(label, "Thresh"); break;
+ case 1: strcpy(label, "Ratio"); break;
+ case 2: strcpy(label, "Output"); break;
+ case 3: strcpy(label, "Attack"); break;
+ case 4: strcpy(label, "Release"); break;
+ case 5: strcpy(label, "Limiter"); break;
+ case 6: strcpy(label, "Gate Thr"); break;
+ case 7: strcpy(label, "Gate Att"); break;
+ case 8: strcpy(label, "Gate Rel"); break;
+ case 9: strcpy(label, "Mix"); break;
+ }
+}
+
+#include <stdio.h>
+static void int2strng(int32_t value, char *string) { sprintf(string, "%d", value); }
+static void float2strng(float value, char *string) { sprintf(string, "%.2f", value); }
+
+void mdaDynamics::getParameterDisplay(int32_t index, char *text)
+{
+ switch(index)
+ {
+ case 0: int2strng((int32_t)(40.0*fParam1 - 40.0),text); break;
+ case 1: if(fParam2>0.58)
+ { if(fParam2<0.62) strcpy(text, "Limit");
+ else float2strng(-rat,text); }
+ else
+ { if(fParam2<0.2) float2strng(0.5f+2.5f*fParam2,text);
+ else float2strng(1.f/(1.f-rat),text); } break;
+ case 2: int2strng((int32_t)(40.0*fParam3 - 0.0),text); break; ///was -20.0
+ case 3: int2strng((int32_t)(-301030.1 / (getSampleRate() * log10(1.0 - att))),text); break;
+ case 4: int2strng((int32_t)(-301.0301 / (getSampleRate() * log10(1.0 - rel))),text); break;
+ case 5: if(lthr==0.f) strcpy(text, "OFF");
+ else int2strng((int32_t)(30.0*fParam6 - 20.0),text);
+ break;
+ case 6: if(xthr==0.f) strcpy(text, "OFF");
+ else int2strng((int32_t)(60.0*fParam7 - 60.0),text);
+ break;
+ case 7: int2strng((int32_t)(-301030.1 / (getSampleRate() * log10(1.0 - gatt))),text); break;
+ case 8: int2strng((int32_t)(-1806.0 / (getSampleRate() * log10(xrat))),text); break;
+ case 9: int2strng((int32_t)(100.0*fParam10),text); break;
+
+ }
+}
+
+void mdaDynamics::getParameterLabel(int32_t index, char *label)
+{
+ switch(index)
+ {
+ case 0: strcpy(label, "dB"); break;
+ case 1: strcpy(label, ":1"); break;
+ case 2: strcpy(label, "dB"); break;
+ case 3: strcpy(label, "�s"); break;
+ case 4: strcpy(label, "ms"); break;
+ case 5: strcpy(label, "dB"); break;
+ case 6: strcpy(label, "dB"); break;
+ case 7: strcpy(label, "�s"); break;
+ case 8: strcpy(label, "ms"); break;
+ case 9: strcpy(label, "%"); break;
+ }
+}
+
+//--------------------------------------------------------------------------------
+// process
+
+void mdaDynamics::process(float **inputs, float **outputs, int32_t sampleFrames)
+{
+ float *in1 = inputs[0];
+ float *in2 = inputs[1];
+ float *out1 = outputs[0];
+ float *out2 = outputs[1];
+ float a, b, c, d, i, j, g, e=env, e2=env2, ra=rat, re=(1.f-rel), at=att, ga=gatt;
+ float tr=trim, th=thr, lth=lthr, xth=xthr, ge=genv, y=dry;
+
+ --in1;
+ --in2;
+ --out1;
+ --out2;
+
+ if(mode) //comp/gate/lim
+ {
+ if(lth==0.f) lth=1000.f;
+ while(--sampleFrames >= 0)
+ {
+ a = *++in1;
+ b = *++in2;
+ c = out1[1];
+ d = out2[1];
+
+ i = (a<0.f)? -a : a;
+ j = (b<0.f)? -b : b;
+ i = (j>i)? j : i;
+
+ e = (i>e)? e + at * (i - e) : e * re;
+ e2 = (i>e)? i : e2 * re; //ir;
+ g = (e>th)? tr / (1.f + ra * ((e/th) - 1.f)) : tr;
+
+ if(g<0.f) g=0.f;
+ if(g*e2>lth) g = lth/e2; //limit
+
+ ge = (e>xth)? ge + ga - ga * ge : ge * xrat; //gate
+
+ c += a * (g * ge + y);
+ d += b * (g * ge + y);
+
+ *++out1 = c;
+ *++out2 = d;
+ }
+ }
+ else //compressor only
+ {
+ while(--sampleFrames >= 0)
+ {
+ a = *++in1;
+ b = *++in2;
+ c = out1[1];
+ d = out2[1];
+
+ i = (a<0.f)? -a : a;
+ j = (b<0.f)? -b : b;
+ i = (j>i)? j : i;
+
+ e = (i>e)? e + at * (i - e) : e * re;
+ g = (e>th)? tr / (1.f + ra * ((e/th) - 1.f)) : tr;
+
+ c += a * (g + y);
+ d += b * (g + y);
+
+ *++out1 = c;
+ *++out2 = d;
+ }
+ }
+ if(e <1.0e-10) env =0.f; else env =e;
+ if(e2<1.0e-10) env2=0.f; else env2=e2;
+ if(ge<1.0e-10) genv=0.f; else genv=ge;
+}
+
+void mdaDynamics::processReplacing(float **inputs, float **outputs, int32_t sampleFrames)
+{
+ float *in1 = inputs[0];
+ float *in2 = inputs[1];
+ float *out1 = outputs[0];
+ float *out2 = outputs[1];
+ float a, b, i, j, g, e=env, e2=env2, ra=rat, re=(1.f-rel), at=att, ga=gatt;
+ float tr=trim, th=thr, lth=lthr, xth=xthr, ge=genv, y=dry;
+ --in1;
+ --in2;
+ --out1;
+ --out2;
+
+ if(mode) //comp/gate/lim
+ {
+ if(lth==0.f) lth=1000.f;
+ while(--sampleFrames >= 0)
+ {
+ a = *++in1;
+ b = *++in2;
+
+ i = (a<0.f)? -a : a;
+ j = (b<0.f)? -b : b;
+ i = (j>i)? j : i;
+
+ e = (i>e)? e + at * (i - e) : e * re;
+ e2 = (i>e)? i : e2 * re; //ir;
+
+ g = (e>th)? tr / (1.f + ra * ((e/th) - 1.f)) : tr;
+
+ if(g<0.f) g=0.f;
+ if(g*e2>lth) g = lth/e2; //limit
+
+ ge = (e>xth)? ge + ga - ga * ge : ge * xrat; //gate
+
+ *++out1 = a * (g * ge + y);
+ *++out2 = b * (g * ge + y);
+ }
+ }
+ else //compressor only
+ {
+ while(--sampleFrames >= 0)
+ {
+ a = *++in1;
+ b = *++in2;
+
+ i = (a<0.f)? -a : a;
+ j = (b<0.f)? -b : b;
+ i = (j>i)? j : i; //get peak level
+
+ e = (i>e)? e + at * (i - e) : e * re; //envelope
+ g = (e>th)? tr / (1.f + ra * ((e/th) - 1.f)) : tr; //gain
+
+ *++out1 = a * (g + y); //vca
+ *++out2 = b * (g + y);
+ }
+ }
+ if(e <1.0e-10) env =0.f; else env =e;
+ if(e2<1.0e-10) env2=0.f; else env2=e2;
+ if(ge<1.0e-10) genv=0.f; else genv=ge;
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-22 20:32:26 +0000