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author | David Robillard <d@drobilla.net> | 2008-08-08 22:45:58 +0000 |
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committer | David Robillard <d@drobilla.net> | 2008-08-08 22:45:58 +0000 |
commit | e360047054117d63fb579ec9231e9dc77c99f12a (patch) | |
tree | 4a497365f6ecd30449e2c66c1fe77c816bd1fe4a /src/mdaImage.cpp | |
download | mda.lv2-e360047054117d63fb579ec9231e9dc77c99f12a.tar.gz mda.lv2-e360047054117d63fb579ec9231e9dc77c99f12a.tar.bz2 mda.lv2-e360047054117d63fb579ec9231e9dc77c99f12a.zip |
Add preliminary (library side only) LV2 port of MDA (open-sourced VST plugins).
git-svn-id: http://svn.drobilla.net/lad/mda-lv2@1321 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/mdaImage.cpp')
-rw-r--r-- | src/mdaImage.cpp | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/mdaImage.cpp b/src/mdaImage.cpp new file mode 100644 index 0000000..1127e15 --- /dev/null +++ b/src/mdaImage.cpp @@ -0,0 +1,229 @@ +#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 = 0.6f; //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("mdaI"); // 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(LvzInt32 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); +} + +float mdaImage::getParameter(LvzInt32 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(LvzInt32 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> +void long2string(long value, char *string) { sprintf(string, "%ld", value); } + +void mdaImage::getParameterDisplay(LvzInt32 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: long2string((long)(400 * fParam2 - 200), text); break; + case 2: long2string((long)(200 * fParam3 - 100), text); break; + case 3: long2string((long)(400 * fParam4 - 200), text); break; + case 4: long2string((long)(200 * fParam5 - 100), text); break; + case 5: long2string((long)(40 * fParam6 - 20), text); break; + } +} + +void mdaImage::getParameterLabel(LvzInt32 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, LvzInt32 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, LvzInt32 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; + } +} |