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
327
modules/juce_audio_basics/mpe/juce_MPESynthesiser.cpp
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327
modules/juce_audio_basics/mpe/juce_MPESynthesiser.cpp
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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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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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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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MPESynthesiser::MPESynthesiser()
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{
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MPEZoneLayout zoneLayout;
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zoneLayout.setLowerZone (15);
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setZoneLayout (zoneLayout);
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}
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MPESynthesiser::MPESynthesiser (MPEInstrument* mpeInstrument) : MPESynthesiserBase (mpeInstrument)
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{
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}
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MPESynthesiser::~MPESynthesiser()
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{
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}
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//==============================================================================
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void MPESynthesiser::startVoice (MPESynthesiserVoice* voice, MPENote noteToStart)
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{
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jassert (voice != nullptr);
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voice->currentlyPlayingNote = noteToStart;
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voice->noteStarted();
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}
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void MPESynthesiser::stopVoice (MPESynthesiserVoice* voice, MPENote noteToStop, bool allowTailOff)
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{
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jassert (voice != nullptr);
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voice->currentlyPlayingNote = noteToStop;
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voice->noteStopped (allowTailOff);
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}
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//==============================================================================
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void MPESynthesiser::noteAdded (MPENote newNote)
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{
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const ScopedLock sl (voicesLock);
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if (auto* voice = findFreeVoice (newNote, shouldStealVoices))
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startVoice (voice, newNote);
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}
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void MPESynthesiser::notePressureChanged (MPENote changedNote)
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{
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const ScopedLock sl (voicesLock);
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for (auto* voice : voices)
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{
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if (voice->isCurrentlyPlayingNote (changedNote))
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{
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voice->currentlyPlayingNote = changedNote;
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voice->notePressureChanged();
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}
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}
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}
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void MPESynthesiser::notePitchbendChanged (MPENote changedNote)
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{
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const ScopedLock sl (voicesLock);
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for (auto* voice : voices)
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{
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if (voice->isCurrentlyPlayingNote (changedNote))
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{
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voice->currentlyPlayingNote = changedNote;
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voice->notePitchbendChanged();
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}
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}
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}
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void MPESynthesiser::noteTimbreChanged (MPENote changedNote)
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{
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const ScopedLock sl (voicesLock);
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for (auto* voice : voices)
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{
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if (voice->isCurrentlyPlayingNote (changedNote))
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{
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voice->currentlyPlayingNote = changedNote;
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voice->noteTimbreChanged();
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}
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}
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}
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void MPESynthesiser::noteKeyStateChanged (MPENote changedNote)
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{
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const ScopedLock sl (voicesLock);
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for (auto* voice : voices)
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{
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if (voice->isCurrentlyPlayingNote (changedNote))
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{
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voice->currentlyPlayingNote = changedNote;
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voice->noteKeyStateChanged();
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}
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}
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}
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void MPESynthesiser::noteReleased (MPENote finishedNote)
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{
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const ScopedLock sl (voicesLock);
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for (auto i = voices.size(); --i >= 0;)
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{
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auto* voice = voices.getUnchecked (i);
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if (voice->isCurrentlyPlayingNote(finishedNote))
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stopVoice (voice, finishedNote, true);
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}
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}
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void MPESynthesiser::setCurrentPlaybackSampleRate (const double newRate)
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{
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MPESynthesiserBase::setCurrentPlaybackSampleRate (newRate);
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const ScopedLock sl (voicesLock);
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turnOffAllVoices (false);
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for (auto i = voices.size(); --i >= 0;)
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voices.getUnchecked (i)->setCurrentSampleRate (newRate);
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}
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void MPESynthesiser::handleMidiEvent (const MidiMessage& m)
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{
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if (m.isController())
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handleController (m.getChannel(), m.getControllerNumber(), m.getControllerValue());
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else if (m.isProgramChange())
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handleProgramChange (m.getChannel(), m.getProgramChangeNumber());
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MPESynthesiserBase::handleMidiEvent (m);
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}
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MPESynthesiserVoice* MPESynthesiser::findFreeVoice (MPENote noteToFindVoiceFor, bool stealIfNoneAvailable) const
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{
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const ScopedLock sl (voicesLock);
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for (auto* voice : voices)
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{
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if (! voice->isActive())
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return voice;
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}
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if (stealIfNoneAvailable)
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return findVoiceToSteal (noteToFindVoiceFor);
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return nullptr;
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}
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MPESynthesiserVoice* MPESynthesiser::findVoiceToSteal (MPENote noteToStealVoiceFor) const
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{
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// This voice-stealing algorithm applies the following heuristics:
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// - Re-use the oldest notes first
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// - Protect the lowest & topmost notes, even if sustained, but not if they've been released.
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// apparently you are trying to render audio without having any voices...
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jassert (voices.size() > 0);
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// These are the voices we want to protect (ie: only steal if unavoidable)
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MPESynthesiserVoice* low = nullptr; // Lowest sounding note, might be sustained, but NOT in release phase
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MPESynthesiserVoice* top = nullptr; // Highest sounding note, might be sustained, but NOT in release phase
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// this is a list of voices we can steal, sorted by how long they've been running
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Array<MPESynthesiserVoice*> usableVoices;
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usableVoices.ensureStorageAllocated (voices.size());
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for (auto* voice : voices)
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{
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jassert (voice->isActive()); // We wouldn't be here otherwise
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usableVoices.add (voice);
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// NB: Using a functor rather than a lambda here due to scare-stories about
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// compilers generating code containing heap allocations..
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struct Sorter
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{
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bool operator() (const MPESynthesiserVoice* a, const MPESynthesiserVoice* b) const noexcept { return a->wasStartedBefore (*b); }
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};
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std::sort (usableVoices.begin(), usableVoices.end(), Sorter());
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if (! voice->isPlayingButReleased()) // Don't protect released notes
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{
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auto noteNumber = voice->getCurrentlyPlayingNote().initialNote;
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if (low == nullptr || noteNumber < low->getCurrentlyPlayingNote().initialNote)
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low = voice;
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if (top == nullptr || noteNumber > top->getCurrentlyPlayingNote().initialNote)
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top = voice;
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}
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}
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// Eliminate pathological cases (ie: only 1 note playing): we always give precedence to the lowest note(s)
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if (top == low)
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top = nullptr;
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// If we want to re-use the voice to trigger a new note,
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// then The oldest note that's playing the same note number is ideal.
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if (noteToStealVoiceFor.isValid())
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for (auto* voice : usableVoices)
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if (voice->getCurrentlyPlayingNote().initialNote == noteToStealVoiceFor.initialNote)
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return voice;
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// Oldest voice that has been released (no finger on it and not held by sustain pedal)
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for (auto* voice : usableVoices)
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if (voice != low && voice != top && voice->isPlayingButReleased())
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return voice;
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// Oldest voice that doesn't have a finger on it:
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for (auto* voice : usableVoices)
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if (voice != low && voice != top
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&& voice->getCurrentlyPlayingNote().keyState != MPENote::keyDown
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&& voice->getCurrentlyPlayingNote().keyState != MPENote::keyDownAndSustained)
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return voice;
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// Oldest voice that isn't protected
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for (auto* voice : usableVoices)
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if (voice != low && voice != top)
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return voice;
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// We've only got "protected" voices now: lowest note takes priority
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jassert (low != nullptr);
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// Duophonic synth: give priority to the bass note:
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if (top != nullptr)
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return top;
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return low;
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}
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//==============================================================================
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void MPESynthesiser::addVoice (MPESynthesiserVoice* const newVoice)
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{
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const ScopedLock sl (voicesLock);
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newVoice->setCurrentSampleRate (getSampleRate());
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voices.add (newVoice);
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}
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void MPESynthesiser::clearVoices()
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{
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const ScopedLock sl (voicesLock);
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voices.clear();
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}
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MPESynthesiserVoice* MPESynthesiser::getVoice (const int index) const
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{
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const ScopedLock sl (voicesLock);
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return voices [index];
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}
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void MPESynthesiser::removeVoice (const int index)
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{
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const ScopedLock sl (voicesLock);
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voices.remove (index);
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}
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void MPESynthesiser::reduceNumVoices (const int newNumVoices)
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{
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// we can't possibly get to a negative number of voices...
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jassert (newNumVoices >= 0);
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const ScopedLock sl (voicesLock);
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while (voices.size() > newNumVoices)
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{
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if (auto* voice = findFreeVoice ({}, true))
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voices.removeObject (voice);
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else
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voices.remove (0); // if there's no voice to steal, kill the oldest voice
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}
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}
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void MPESynthesiser::turnOffAllVoices (bool allowTailOff)
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{
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// first turn off all voices (it's more efficient to do this immediately
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// rather than to go through the MPEInstrument for this).
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for (auto* voice : voices)
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voice->noteStopped (allowTailOff);
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// finally make sure the MPE Instrument also doesn't have any notes anymore.
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instrument->releaseAllNotes();
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}
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//==============================================================================
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void MPESynthesiser::renderNextSubBlock (AudioBuffer<float>& buffer, int startSample, int numSamples)
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{
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for (auto* voice : voices)
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{
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if (voice->isActive())
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voice->renderNextBlock (buffer, startSample, numSamples);
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}
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}
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void MPESynthesiser::renderNextSubBlock (AudioBuffer<double>& buffer, int startSample, int numSamples)
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{
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for (auto* voice : voices)
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{
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if (voice->isActive())
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voice->renderNextBlock (buffer, startSample, numSamples);
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}
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}
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} // namespace juce
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