git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/modules/juce_dsp/widgets/juce_Limiter.cpp

@@ -0,0 +1,98 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2020 - Raw Material Software Limited
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 6 End-User License
+   Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
+
+   End User License Agreement: www.juce.com/juce-6-licence
+   Privacy Policy: www.juce.com/juce-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+namespace dsp
+{
+
+//==============================================================================
+template <typename SampleType>
+void Limiter<SampleType>::setThreshold (SampleType newThreshold)
+{
+    thresholddB = newThreshold;
+    update();
+}
+
+template <typename SampleType>
+void Limiter<SampleType>::setRelease (SampleType newRelease)
+{
+    releaseTime = newRelease;
+    update();
+}
+
+//==============================================================================
+template <typename SampleType>
+void Limiter<SampleType>::prepare (const ProcessSpec& spec)
+{
+    jassert (spec.sampleRate > 0);
+    jassert (spec.numChannels > 0);
+
+    sampleRate = spec.sampleRate;
+
+    firstStageCompressor.prepare (spec);
+    secondStageCompressor.prepare (spec);
+
+    update();
+    reset();
+}
+
+template <typename SampleType>
+void Limiter<SampleType>::reset()
+{
+    firstStageCompressor.reset();
+    secondStageCompressor.reset();
+
+    outputVolume.reset (sampleRate, 0.001);
+}
+
+//==============================================================================
+template <typename SampleType>
+void Limiter<SampleType>::update()
+{
+    firstStageCompressor.setThreshold ((SampleType) -10.0);
+    firstStageCompressor.setRatio     ((SampleType) 4.0);
+    firstStageCompressor.setAttack    ((SampleType) 2.0);
+    firstStageCompressor.setRelease   ((SampleType) 200.0);
+
+    secondStageCompressor.setThreshold (thresholddB);
+    secondStageCompressor.setRatio     ((SampleType) 1000.0);
+    secondStageCompressor.setAttack    ((SampleType) 0.001);
+    secondStageCompressor.setRelease   (releaseTime);
+
+    auto ratioInverse = (SampleType) (1.0 / 4.0);
+
+    auto gain = (SampleType) std::pow (10.0, 10.0 * (1.0 - ratioInverse) / 40.0);
+    gain *= Decibels::decibelsToGain (-thresholddB, (SampleType) -100.0);
+
+    outputVolume.setTargetValue (gain);
+}
+
+//==============================================================================
+template class Limiter<float>;
+template class Limiter<double>;
+
+} // namespace dsp
+} // namespace juce