fix macOS build (following Projucer changes made in Windows, which removed /Applications/JUCE/modules from its headers). move JUCE headers under source control, so that Windows and macOS can both build against same version of JUCE. remove AUv3 target (I think it's an iOS thing, so it will never work with this macOS fluidsynth dylib).
This commit is contained in:
Alex Birch
244
modules/juce_dsp/processors/juce_Oscillator.h
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244
modules/juce_dsp/processors/juce_Oscillator.h
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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namespace dsp
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{
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/**
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Generates a signal based on a user-supplied function.
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@tags{DSP}
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*/
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template <typename SampleType>
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class Oscillator
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{
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public:
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/** The NumericType is the underlying primitive type used by the SampleType (which
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could be either a primitive or vector)
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*/
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using NumericType = typename SampleTypeHelpers::ElementType<SampleType>::Type;
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/** Creates an uninitialised oscillator. Call initialise before first use. */
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Oscillator()
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{}
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/** Creates an oscillator with a periodic input function (-pi..pi).
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If lookup table is not zero, then the function will be approximated
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with a lookup table.
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*/
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Oscillator (const std::function<NumericType (NumericType)>& function,
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size_t lookupTableNumPoints = 0)
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{
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initialise (function, lookupTableNumPoints);
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}
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/** Returns true if the Oscillator has been initialised. */
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bool isInitialised() const noexcept { return static_cast<bool> (generator); }
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/** Initialises the oscillator with a waveform. */
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void initialise (const std::function<NumericType (NumericType)>& function,
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size_t lookupTableNumPoints = 0)
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{
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if (lookupTableNumPoints != 0)
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{
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auto* table = new LookupTableTransform<NumericType> (function,
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-MathConstants<NumericType>::pi,
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MathConstants<NumericType>::pi,
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lookupTableNumPoints);
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lookupTable.reset (table);
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generator = [table] (NumericType x) { return (*table) (x); };
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}
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else
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{
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generator = function;
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}
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}
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//==============================================================================
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/** Sets the frequency of the oscillator. */
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void setFrequency (NumericType newFrequency, bool force = false) noexcept { frequency.setValue (newFrequency, force); }
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/** Returns the current frequency of the oscillator. */
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NumericType getFrequency() const noexcept { return frequency.getTargetValue(); }
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//==============================================================================
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/** Called before processing starts. */
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void prepare (const ProcessSpec& spec) noexcept
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{
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sampleRate = static_cast<NumericType> (spec.sampleRate);
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rampBuffer.resize ((int) spec.maximumBlockSize);
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reset();
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}
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/** Resets the internal state of the oscillator */
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void reset() noexcept
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{
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phase.reset();
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if (sampleRate > 0)
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frequency.reset (sampleRate, 0.05);
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}
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//==============================================================================
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/** Returns the result of processing a single sample. */
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SampleType JUCE_VECTOR_CALLTYPE processSample (SampleType input) noexcept
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{
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jassert (isInitialised());
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auto increment = MathConstants<NumericType>::twoPi * frequency.getNextValue() / sampleRate;
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return input + generator (phase.advance (increment) - MathConstants<NumericType>::pi);
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}
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/** Processes the input and output buffers supplied in the processing context. */
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template <typename ProcessContext>
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void process (const ProcessContext& context) noexcept
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{
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jassert (isInitialised());
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auto&& outBlock = context.getOutputBlock();
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auto&& inBlock = context.getInputBlock();
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// this is an output-only processory
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jassert (outBlock.getNumSamples() <= static_cast<size_t> (rampBuffer.size()));
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auto len = outBlock.getNumSamples();
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auto numChannels = outBlock.getNumChannels();
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auto inputChannels = inBlock.getNumChannels();
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auto baseIncrement = MathConstants<NumericType>::twoPi / sampleRate;
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if (context.isBypassed)
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context.getOutputBlock().clear();
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if (frequency.isSmoothing())
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{
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auto* buffer = rampBuffer.getRawDataPointer();
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for (size_t i = 0; i < len; ++i)
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buffer[i] = phase.advance (baseIncrement * frequency.getNextValue())
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- MathConstants<NumericType>::pi;
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if (! context.isBypassed)
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{
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size_t ch;
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if (context.usesSeparateInputAndOutputBlocks())
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{
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for (ch = 0; ch < jmin (numChannels, inputChannels); ++ch)
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{
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auto* dst = outBlock.getChannelPointer (ch);
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auto* src = inBlock.getChannelPointer (ch);
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for (size_t i = 0; i < len; ++i)
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dst[i] = src[i] + generator (buffer[i]);
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}
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}
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else
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{
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for (ch = 0; ch < jmin (numChannels, inputChannels); ++ch)
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{
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auto* dst = outBlock.getChannelPointer (ch);
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for (size_t i = 0; i < len; ++i)
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dst[i] += generator (buffer[i]);
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}
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}
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for (; ch < numChannels; ++ch)
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{
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auto* dst = outBlock.getChannelPointer (ch);
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for (size_t i = 0; i < len; ++i)
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dst[i] = generator (buffer[i]);
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}
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}
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}
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else
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{
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auto freq = baseIncrement * frequency.getNextValue();
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auto p = phase;
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if (context.isBypassed)
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{
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frequency.skip (static_cast<int> (len));
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p.advance (freq * static_cast<NumericType> (len));
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}
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else
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{
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size_t ch;
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if (context.usesSeparateInputAndOutputBlocks())
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{
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for (ch = 0; ch < jmin (numChannels, inputChannels); ++ch)
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{
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p = phase;
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auto* dst = outBlock.getChannelPointer (ch);
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auto* src = inBlock.getChannelPointer (ch);
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for (size_t i = 0; i < len; ++i)
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dst[i] = src[i] + generator (p.advance (freq) - MathConstants<NumericType>::pi);
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}
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}
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else
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{
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for (ch = 0; ch < jmin (numChannels, inputChannels); ++ch)
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{
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p = phase;
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auto* dst = outBlock.getChannelPointer (ch);
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for (size_t i = 0; i < len; ++i)
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dst[i] += generator (p.advance (freq) - MathConstants<NumericType>::pi);
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}
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}
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for (; ch < numChannels; ++ch)
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{
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p = phase;
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auto* dst = outBlock.getChannelPointer (ch);
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for (size_t i = 0; i < len; ++i)
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dst[i] = generator (p.advance (freq) - MathConstants<NumericType>::pi);
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}
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}
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phase = p;
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}
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}
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private:
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//==============================================================================
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std::function<NumericType (NumericType)> generator;
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std::unique_ptr<LookupTableTransform<NumericType>> lookupTable;
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Array<NumericType> rampBuffer;
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LinearSmoothedValue<NumericType> frequency { static_cast<NumericType> (440.0) };
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NumericType sampleRate = 48000.0;
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Phase<NumericType> phase;
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};
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} // namespace dsp
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} // namespace juce
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