156 lines
5.3 KiB
C++
156 lines
5.3 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework examples.
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Copyright (c) Raw Material Software Limited
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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to use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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==============================================================================
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*/
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/*******************************************************************************
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The block below describes the properties of this PIP. A PIP is a short snippet
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of code that can be read by the Projucer and used to generate a JUCE project.
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BEGIN_JUCE_PIP_METADATA
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name: OscillatorDemo
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version: 1.0.0
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vendor: JUCE
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website: http://juce.com
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description: Oscillator demo using the DSP module.
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dependencies: juce_audio_basics, juce_audio_devices, juce_audio_formats,
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juce_audio_processors, juce_audio_utils, juce_core,
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juce_data_structures, juce_dsp, juce_events, juce_graphics,
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juce_gui_basics, juce_gui_extra
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exporters: xcode_mac, vs2022, linux_make
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moduleFlags: JUCE_STRICT_REFCOUNTEDPOINTER=1
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type: Component
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mainClass: OscillatorDemo
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useLocalCopy: 1
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END_JUCE_PIP_METADATA
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*******************************************************************************/
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#pragma once
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#include "../Assets/DemoUtilities.h"
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#include "../Assets/DSPDemos_Common.h"
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using namespace dsp;
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//==============================================================================
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struct OscillatorDemoDSP
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{
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void prepare (const ProcessSpec& spec)
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{
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gain.setGainDecibels (-6.0f);
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for (auto&& oscillator : oscillators)
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{
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oscillator.setFrequency (440.f);
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oscillator.prepare (spec);
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}
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updateParameters();
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tempBuffer = AudioBlock<float> (tempBufferMemory, spec.numChannels, spec.maximumBlockSize);
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}
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void process (const ProcessContextReplacing<float>& context)
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{
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tempBuffer.copyFrom (context.getInputBlock());
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tempBuffer.multiplyBy (static_cast<float> (fileMix));
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oscillators[currentOscillatorIdx].process (context);
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context.getOutputBlock().multiplyBy (static_cast<float> (1.0 - fileMix));
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context.getOutputBlock().add (tempBuffer);
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gain.process (context);
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}
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void reset()
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{
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oscillators[currentOscillatorIdx].reset();
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}
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void updateParameters()
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{
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currentOscillatorIdx = jmin (numElementsInArray (oscillators),
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3 * (accuracy.getCurrentSelectedID() - 1) + (typeParam.getCurrentSelectedID() - 1));
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auto freq = static_cast<float> (freqParam.getCurrentValue());
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for (auto&& oscillator : oscillators)
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oscillator.setFrequency (freq);
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gain.setGainDecibels (static_cast<float> (gainParam.getCurrentValue()));
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fileMix = mixParam.getCurrentValue();
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}
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//==============================================================================
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Oscillator<float> oscillators[6] =
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{
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// No Approximation
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{[] (float x) { return std::sin (x); }}, // sine
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{[] (float x) { return x / MathConstants<float>::pi; }}, // saw
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{[] (float x) { return x < 0.0f ? -1.0f : 1.0f; }}, // square
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// Approximated by a wave-table
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{[] (float x) { return std::sin (x); }, 100}, // sine
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{[] (float x) { return x / MathConstants<float>::pi; }, 100}, // saw
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{[] (float x) { return x < 0.0f ? -1.0f : 1.0f; }, 100} // square
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};
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int currentOscillatorIdx = 0;
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Gain<float> gain;
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ChoiceParameter typeParam { {"sine", "saw", "square"}, 1, "Type" };
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ChoiceParameter accuracy { {"No Approximation", "Use Wavetable"}, 1, "Accuracy" };
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SliderParameter freqParam { { 20.0, 24000.0 }, 0.4, 440.0, "Frequency", "Hz" };
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SliderParameter gainParam { { -100.0, 20.0 }, 3.0, -20.0, "Gain", "dB" };
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SliderParameter mixParam { { 0.0, 1.0 }, 1.0, 0.0, "File mix" };
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HeapBlock<char> tempBufferMemory;
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AudioBlock<float> tempBuffer;
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double fileMix;
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std::vector<DSPDemoParameterBase*> parameters { &typeParam, &accuracy, &freqParam, &gainParam, &mixParam };
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};
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struct OscillatorDemo final : public Component
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{
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OscillatorDemo()
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{
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addAndMakeVisible (fileReaderComponent);
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setSize (750, 500);
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}
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void resized() override
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{
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fileReaderComponent.setBounds (getLocalBounds());
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}
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AudioFileReaderComponent<OscillatorDemoDSP> fileReaderComponent;
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};
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