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/*
==============================================================================
This file is part of the IEM plug-in suite.
Author: Daniel Rudrich
Copyright (c) 2017 - Institute of Electronic Music and Acoustics (IEM)
https://iem.at
The IEM plug-in suite is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
The IEM plug-in suite is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this software. If not, see <https://www.gnu.org/licenses/>.
==============================================================================
*/
#pragma once
#include "MaxRE.h"
#include "ReferenceCountedMatrix.h"
#include "ambisonicTools.h"
#include "inPhase.h"
class ReferenceCountedDecoder : public ReferenceCountedMatrix
{
public:
typedef juce::ReferenceCountedObjectPtr<ReferenceCountedDecoder> Ptr;
enum class Normalization
{
n3d,
sn3d
};
enum class Weights
{
none,
maxrE,
inPhase
};
struct Settings
{
Normalization expectedNormalization = Normalization::sn3d;
Weights weights = Weights::none;
bool weightsAlreadyApplied = false;
int subwooferChannel = -1;
};
ReferenceCountedDecoder (const juce::String& nameToUse,
const juce::String& descriptionToUse,
int rows,
int columns) :
ReferenceCountedMatrix (nameToUse, descriptionToUse, rows, columns),
order (isqrt (columns) - 1)
{
}
~ReferenceCountedDecoder() override = default;
virtual juce::String getConstructorMessage() const override
{
return "Decoder named '" + name + "' constructed. Size: "
+ juce::String (matrix.getNumRows()) + "x" + juce::String (matrix.getNumColumns());
}
virtual juce::String getDeconstructorMessage() const override
{
return "Decoder named '" + name + "' destroyed.";
}
const juce::String getName() { return name; }
const juce::String getDescription() { return description; }
void setSettings (const Settings newSettings) { settings = newSettings; }
const Settings getSettings() { return settings; }
const juce::String getWeightsString() const
{
switch (settings.weights)
{
case Weights::maxrE:
return "maxrE";
case Weights::inPhase:
return "inPhase";
default:
return "none";
}
}
/**
Applies the inverse weights to the decoder matrix, so it can be used with different orders. This method has to be called before the decoder processes audio input.
*/
void removeAppliedWeights()
{
if (settings.weightsAlreadyApplied && settings.weights != Weights::none)
{
const auto nCols = static_cast<int> (matrix.getNumColumns());
const auto nRows = static_cast<int> (matrix.getNumRows());
if (settings.weights == Weights::maxrE)
for (int i = 0; i < nCols; ++i)
for (int j = 0; j < nRows; ++j)
matrix (j, i) /= getMaxRELUT (order)[i];
else if (settings.weights == Weights::inPhase)
for (int i = 0; i < nCols; ++i)
for (int j = 0; j < nRows; ++j)
matrix (j, i) /= getInPhaseLUT (order)[i];
settings.weightsAlreadyApplied = false;
}
}
const int getOrder() { return order; }
private:
Settings settings;
const int order;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ReferenceCountedDecoder)
};
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