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-rw-r--r--src/mdaImage.cpp257
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diff --git a/src/mdaImage.cpp b/src/mdaImage.cpp
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+++ b/src/mdaImage.cpp
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+/*
+ 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 "mdaImage.h"
+
+#include <math.h>
+#include <float.h>
+
+AudioEffect *createEffectInstance(audioMasterCallback audioMaster)
+{
+ return new mdaImage(audioMaster);
+}
+
+mdaImage::mdaImage(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, 1, 6) // programs, parameters
+{
+ fParam1 = 0.0f; //mode
+ fParam2 = 0.75f; //width
+ fParam3 = 0.5f; //skew
+ fParam4 = 0.75f; //centre
+ fParam5 = 0.5f; //balance
+ fParam6 = 0.5f; //output
+
+ setNumInputs(2);
+ setNumOutputs(2);
+ setUniqueID("mdaImage"); // identify here
+ DECLARE_LVZ_DEPRECATED(canMono) ();
+ canProcessReplacing();
+ strcpy(programName, "Stereo Image / MS Matrix");
+
+ setParameter(0, 0.6f); //go and set initial values!
+}
+
+bool mdaImage::getProductString(char* text) { strcpy(text, "MDA Image"); return true; }
+bool mdaImage::getVendorString(char* text) { strcpy(text, "mda"); return true; }
+bool mdaImage::getEffectName(char* name) { strcpy(name, "Image"); return true; }
+
+void mdaImage::setParameter(int32_t index, float value)
+{
+ float w, k, c, b, g;
+
+//add channel invert presets: SM->LR -100, -100, +100, +100
+
+
+ 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;
+ }
+ //calcs here
+ w = 4.f * fParam2 - 2.f; //width
+ k = 2.f * fParam3; //balance
+ c = 4.f * fParam4 - 2.f; //depth
+ b = 2.f * fParam5; //pan
+ g = (float)pow(10.0, 2.0 * fParam6 - 1.0);
+
+ switch(int(fParam1*3.9))
+ {
+ case 0: //SM->LR
+ r2l = g * c * (2.f - b);
+ l2l = g * w * (2.f - k);
+ r2r = g * c * b;
+ l2r = -g * w * k;
+ break;
+
+ case 1: //MS->LR
+ l2l = g * c * (2.f - b);
+ r2l = g * w * (2.f - k);
+ l2r = g * c * b;
+ r2r = -g * w * k;
+ break;
+
+ case 2: //LR->LR
+ g *= 0.5f;
+ l2l = g * (c * (2.f - b) + w * (2.f - k));
+ r2l = g * (c * (2.f - b) - w * (2.f - k));
+ l2r = g * (c * b - w * k);
+ r2r = g * (c * b + w * k);
+ break;
+
+ case 3: //LR->MS
+ g *= 0.5f;
+ l2l = g * (2.f - b) * (2.f - k);
+ r2l = g * (2.f - b) * k;
+ l2r = -g * b * (2.f - k);
+ r2r = g * b * k;
+ break;
+ }
+}
+
+mdaImage::~mdaImage()
+{
+}
+
+void mdaImage::suspend()
+{
+}
+
+void mdaImage::setProgramName(char *name)
+{
+ strcpy(programName, name);
+}
+
+void mdaImage::getProgramName(char *name)
+{
+ strcpy(name, programName);
+}
+
+bool mdaImage::getProgramNameIndexed (int32_t category, int32_t index, char* name)
+{
+ if (index == 0)
+ {
+ strcpy(name, programName);
+ return true;
+ }
+ return false;
+}
+
+float mdaImage::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;
+ }
+ return v;
+}
+
+void mdaImage::getParameterName(int32_t index, char *label)
+{
+ switch(index)
+ {
+ case 0: strcpy(label, "Mode"); break;
+ case 1: strcpy(label, "S Width"); break;
+ case 2: strcpy(label, "S Pan"); break;
+ case 3: strcpy(label, "M Level"); break;
+ case 4: strcpy(label, "M Pan"); break;
+ case 5: strcpy(label, "Output"); break;
+ }
+}
+
+#include <stdio.h>
+static void int2strng(int32_t value, char *string) { sprintf(string, "%d", value); }
+
+void mdaImage::getParameterDisplay(int32_t index, char *text)
+{
+ switch(index)
+ {
+ case 0: switch(int(fParam1*3.9))
+ {
+ case 0: strcpy(text, "SM->LR"); break;
+ case 1: strcpy(text, "MS->LR"); break;
+ case 2: strcpy(text, "LR->LR"); break;
+ case 3: strcpy(text, "LR->MS"); break;
+
+ } break;
+ case 1: int2strng((int32_t)(400 * fParam2 - 200), text); break;
+ case 2: int2strng((int32_t)(200 * fParam3 - 100), text); break;
+ case 3: int2strng((int32_t)(400 * fParam4 - 200), text); break;
+ case 4: int2strng((int32_t)(200 * fParam5 - 100), text); break;
+ case 5: int2strng((int32_t)(40 * fParam6 - 20), text); break;
+ }
+}
+
+void mdaImage::getParameterLabel(int32_t index, char *label)
+{
+ switch(index)
+ {
+ case 0: strcpy(label, ""); break;
+ case 1: strcpy(label, "%"); break;
+ case 2: strcpy(label, "L<->R"); break;
+ case 3: strcpy(label, "%"); break;
+ case 4: strcpy(label, "L<->R"); break;
+ case 5: strcpy(label, "dB"); break;
+ }
+}
+
+//--------------------------------------------------------------------------------
+// process
+
+void mdaImage::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, ll=l2l, lr=l2r, rl=r2l, rr=r2r;
+
+ --in1;
+ --in2;
+ --out1;
+ --out2;
+
+ while(--sampleFrames >= 0)
+ {
+ a = *++in1;
+ b = *++in2;
+ c = out1[1];
+ d = out2[1]; //process from here...
+
+ d += rr*b + lr*a;
+ c += ll*a + rl*b;
+
+ *++out1 = c;
+ *++out2 = d;
+ }
+}
+
+void mdaImage::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, c, d, ll=l2l, lr=l2r, rl=r2l, rr=r2r;
+
+ --in1;
+ --in2;
+ --out1;
+ --out2;
+
+ while(--sampleFrames >= 0)
+ {
+ a = *++in1;
+ b = *++in2;
+
+ d = rr*b + lr*a;
+ c = ll*a + rl*b;
+
+ *++out1 = c;
+ *++out2 = d;
+ }
+}
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