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/processors/juce_DryWetMixer.h

@@ -0,0 +1,120 @@
+/*
+  ==============================================================================
+
+   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
+{
+
+enum class DryWetMixingRule
+{
+    linear,          // dry volume is equal to 1 - wet volume
+    balanced,        // both dry and wet are 1 when mix is 0.5, with dry decreasing to 0
+                     // above this value and wet decreasing to 0 below it
+    sin3dB,          // alternate dry/wet mixing rule using the 3 dB sine panning rule
+    sin4p5dB,        // alternate dry/wet mixing rule using the 4.5 dB sine panning rule
+    sin6dB,          // alternate dry/wet mixing rule using the 6 dB sine panning rule
+    squareRoot3dB,   // alternate dry/wet mixing rule using the regular 3 dB panning rule
+    squareRoot4p5dB  // alternate dry/wet mixing rule using the regular 4.5 dB panning rule
+};
+
+/**
+    A processor to handle dry/wet mixing of two audio signals, where the wet signal
+    may have additional latency.
+
+    Once a DryWetMixer object is configured, push the dry samples using pushDrySamples
+    and mix into the fully wet samples using mixWetSamples.
+
+    @tags{DSP}
+*/
+template <typename SampleType>
+class DryWetMixer
+{
+public:
+    //==============================================================================
+    using MixingRule = DryWetMixingRule;
+
+    //==============================================================================
+    /** Default constructor. */
+    DryWetMixer();
+
+    /** Constructor. */
+    explicit DryWetMixer (int maximumWetLatencyInSamples);
+
+    //==============================================================================
+    /** Sets the mix rule. */
+    void setMixingRule (MixingRule newRule);
+
+    /** Sets the current dry/wet mix proportion, with 0.0 being full dry and 1.0
+        being fully wet.
+    */
+    void setWetMixProportion (SampleType newWetMixProportion);
+
+    /** Sets the relative latency of the wet signal path compared to the dry signal
+        path, and thus the amount of latency compensation that will be added to the
+        dry samples in this processor.
+    */
+    void setWetLatency (SampleType wetLatencyInSamples);
+
+    //==============================================================================
+    /** Initialises the processor. */
+    void prepare (const ProcessSpec& spec);
+
+    /** Resets the internal state variables of the processor. */
+    void reset();
+
+    //==============================================================================
+    /** Copies the dry path samples into an internal delay line. */
+    void pushDrySamples (const AudioBlock<const SampleType> drySamples);
+
+    /** Mixes the supplied wet samples with the latency-compensated dry samples from
+        pushDrySamples.
+
+        @param wetSamples    Input:  The AudioBlock references fully wet samples.
+                             Output: The AudioBlock references the wet samples mixed
+                                     with the latency compensated dry samples.
+
+        @see pushDrySamples
+    */
+    void mixWetSamples (AudioBlock<SampleType> wetSamples);
+
+private:
+    //==============================================================================
+    void update();
+
+    //==============================================================================
+    SmoothedValue<SampleType, ValueSmoothingTypes::Linear> dryVolume, wetVolume;
+    DelayLine<SampleType, DelayLineInterpolationTypes::Thiran> dryDelayLine;
+    AudioBuffer<SampleType> bufferDry;
+
+    SingleThreadedAbstractFifo fifo;
+    SampleType mix = 1.0;
+    MixingRule currentMixingRule = MixingRule::linear;
+    double sampleRate = 44100.0;
+    int maximumWetLatencyInSamples = 0;
+};
+
+} // namespace dsp
+} // namespace juce