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/*
==============================================================================
This file is part of the JUCE framework examples.
Copyright (c) Raw Material Software Limited
The code included in this file is provided under the terms of the ISC license
http://www.isc.org/downloads/software-support-policy/isc-license. Permission
to use, copy, modify, and/or distribute this software for any purpose with or
without fee is hereby granted provided that the above copyright notice and
this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
==============================================================================
*/
/*******************************************************************************
The block below describes the properties of this PIP. A PIP is a short snippet
of code that can be read by the Projucer and used to generate a JUCE project.
BEGIN_JUCE_PIP_METADATA
name: StateVariableFilterDemo
version: 1.0.0
vendor: JUCE
website: http://juce.com
description: State variable filter demo using the DSP module.
dependencies: juce_audio_basics, juce_audio_devices, juce_audio_formats,
juce_audio_processors, juce_audio_utils, juce_core,
juce_data_structures, juce_dsp, juce_events, juce_graphics,
juce_gui_basics, juce_gui_extra
exporters: xcode_mac, vs2022, linux_make
moduleFlags: JUCE_STRICT_REFCOUNTEDPOINTER=1
type: Component
mainClass: StateVariableFilterDemo
useLocalCopy: 1
END_JUCE_PIP_METADATA
*******************************************************************************/
#pragma once
#include "../Assets/DemoUtilities.h"
#include "../Assets/DSPDemos_Common.h"
using namespace dsp;
//==============================================================================
struct StateVariableFilterDemoDSP
{
void prepare (const ProcessSpec& spec)
{
sampleRate = spec.sampleRate;
filter.prepare (spec);
}
void process (const ProcessContextReplacing<float>& context)
{
filter.process (context);
}
void reset()
{
filter.reset();
}
void updateParameters()
{
if (! approximatelyEqual (sampleRate, 0.0))
{
filter.setCutoffFrequency (static_cast<float> (cutoffParam.getCurrentValue()));
filter.setResonance (static_cast<float> (qParam.getCurrentValue()));
switch (typeParam.getCurrentSelectedID() - 1)
{
case 0: filter.setType (StateVariableTPTFilterType::lowpass); break;
case 1: filter.setType (StateVariableTPTFilterType::bandpass); break;
case 2: filter.setType (StateVariableTPTFilterType::highpass); break;
default: jassertfalse; break;
};
}
}
//==============================================================================
StateVariableTPTFilter<float> filter;
ChoiceParameter typeParam {{ "Low-pass", "Band-pass", "High-pass" }, 1, "Type" };
SliderParameter cutoffParam {{ 20.0, 20000.0 }, 0.5, 440.0f, "Cutoff", "Hz" };
SliderParameter qParam {{ 0.3, 20.0 }, 0.5, 1.0 / MathConstants<double>::sqrt2, "Resonance" };
std::vector<DSPDemoParameterBase*> parameters { &typeParam, &cutoffParam, &qParam };
double sampleRate = 0.0;
};
struct StateVariableFilterDemo final : public Component
{
StateVariableFilterDemo()
{
addAndMakeVisible (fileReaderComponent);
setSize (750, 500);
}
void resized() override
{
fileReaderComponent.setBounds (getLocalBounds());
}
AudioFileReaderComponent<StateVariableFilterDemoDSP> fileReaderComponent;
};
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