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Added dirty SoftwareLimiter implementation

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This commit is contained in:
Iscle 2023-01-08 01:11:46 +01:00
parent 11952040a3
commit a7d5eb60cd
1 changed files with 71 additions and 1 deletions
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72
src/viper/effects/SoftwareLimiter.cpp
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@ -1,4 +1,5 @@
#include <cstring>
#include <cmath>
#include "SoftwareLimiter.h"
SoftwareLimiter::SoftwareLimiter() {
@ -12,7 +13,76 @@ SoftwareLimiter::SoftwareLimiter() {
}
float SoftwareLimiter::Process(float sample) {
return sample;
bool bVar1;
uint uVar3;
uint uVar4;
int iVar5;
uint uVar6;
uint *puVar7;
uint uVar8;
float fVar9;
float fVar10;
float abs_sample = std::abs(sample);
if (abs_sample < this->gate) {
if (this->ready) goto LAB_0006d86c;
uVar8 = this->unknown4;
} else {
if (!this->ready) {
memset(this->arr512, 0, sizeof(this->arr512));
this->ready = true;
}
LAB_0006d86c:
uVar3 = 8;
puVar7 = &this->unknown4;
uVar8 = *puVar7;
uVar4 = uVar8;
do {
iVar5 = 2 << (uVar3 & 0xff);
uVar6 = uVar4 ^ 1;
puVar7[uVar4 - iVar5] = (uint)abs_sample;
uVar4 = (int)uVar4 >> 1;
if (abs_sample < (float)puVar7[uVar6 - iVar5]) {
abs_sample = (float)puVar7[uVar6 - iVar5];
}
uVar3 = uVar3 - 1;
} while (uVar3 != 0);
if (this->gate < abs_sample) {
uVar4 = uVar8 + 1 & 0xff;
this->arr256[uVar8] = sample;
this->unknown4 = uVar4;
fVar10 = this->gate / abs_sample;
abs_sample = this->arr256[uVar4];
goto LAB_0006d8fc;
}
this->ready = false;
}
fVar10 = this->unknown1;
this->arr256[uVar8] = sample;
uVar8 = uVar8 + 1 & 0xff;
this->unknown4 = uVar8;
abs_sample = this->arr256[uVar8];
LAB_0006d8fc:
fVar9 = this->unknown2 * 0.9999 + 0.0001;
fVar10 = fVar10 * 0.0999 + this->unknown3 * 0.8999;
bVar1 = fVar10 < fVar9;
this->unknown3 = fVar10;
if (bVar1) {
fVar9 = fVar10;
}
if (bVar1) {
this->unknown2 = fVar10;
}
if (!bVar1) {
this->unknown2 = fVar9;
}
fVar9 = abs_sample * fVar9;
if (this->gate <= std::abs(fVar9)) {
fVar9 = this->gate / std::abs(abs_sample);
this->unknown2 = fVar9;
fVar9 = abs_sample * fVar9;
}
return fVar9;
}
void SoftwareLimiter::ResetLimiter() {