From 9e6f77ac8640cd36bcacc377385223967c8c2ff2 Mon Sep 17 00:00:00 2001
From: Paul Fd <paul@ferrand.cc>
Date: Sun, 9 Feb 2020 18:07:56 +0100
Subject: [PATCH] Clamp filter coefficients

---
 src/sfizz/FilterPool.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/sfizz/FilterPool.cpp b/src/sfizz/FilterPool.cpp
index 0904d62e..4af9f7b6 100644
--- a/src/sfizz/FilterPool.cpp
+++ b/src/sfizz/FilterPool.cpp
@@ -32,6 +32,7 @@ void sfz::FilterHolder::setup(const FilterDescription& description, int noteNumb
     baseCutoff *= centsFactor(keytrack);
     const auto veltrack = description.veltrack * normalizeVelocity(velocity);
     baseCutoff *= centsFactor(veltrack);
+    baseCutoff = Default::filterCutoffRange.clamp(baseCutoff);
 
     baseGain = description.gain;
     baseResonance = description.resonance;
@@ -51,16 +52,19 @@ void sfz::FilterHolder::process(const float** inputs, float** outputs, unsigned
     for (auto& mod: description->cutoffCC) {
         lastCutoff *= centsFactor(midiState.getCCValue(mod.first) * mod.second);
     }
+    lastCutoff = Default::filterCutoffRange.clamp(lastCutoff);
 
     lastResonance = baseResonance;
     for (auto& mod: description->resonanceCC) {
         lastResonance += midiState.getCCValue(mod.first) * mod.second;
     }
+    lastResonance = Default::filterResonanceRange.clamp(lastResonance);
 
     lastGain = baseGain;
     for (auto& mod: description->gainCC) {
         lastGain += midiState.getCCValue(mod.first) * mod.second;
     }
+    lastGain = Default::filterGainRange.clamp(lastGain);
 
     filter.process(inputs, outputs, lastCutoff, lastResonance, lastGain, numFrames);
 }