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
205
modules/juce_audio_formats/sampler/juce_Sampler.cpp
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205
modules/juce_audio_formats/sampler/juce_Sampler.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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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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SamplerSound::SamplerSound (const String& soundName,
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AudioFormatReader& source,
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const BigInteger& notes,
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int midiNoteForNormalPitch,
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double attackTimeSecs,
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double releaseTimeSecs,
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double maxSampleLengthSeconds)
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: name (soundName),
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sourceSampleRate (source.sampleRate),
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midiNotes (notes),
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midiRootNote (midiNoteForNormalPitch)
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{
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if (sourceSampleRate > 0 && source.lengthInSamples > 0)
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{
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length = jmin ((int) source.lengthInSamples,
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(int) (maxSampleLengthSeconds * sourceSampleRate));
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data.reset (new AudioBuffer<float> (jmin (2, (int) source.numChannels), length + 4));
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source.read (data.get(), 0, length + 4, 0, true, true);
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attackSamples = roundToInt (attackTimeSecs * sourceSampleRate);
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releaseSamples = roundToInt (releaseTimeSecs * sourceSampleRate);
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}
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}
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SamplerSound::~SamplerSound()
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{
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}
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bool SamplerSound::appliesToNote (int midiNoteNumber)
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{
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return midiNotes[midiNoteNumber];
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}
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bool SamplerSound::appliesToChannel (int /*midiChannel*/)
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{
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return true;
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}
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//==============================================================================
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SamplerVoice::SamplerVoice() {}
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SamplerVoice::~SamplerVoice() {}
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bool SamplerVoice::canPlaySound (SynthesiserSound* sound)
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{
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return dynamic_cast<const SamplerSound*> (sound) != nullptr;
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}
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void SamplerVoice::startNote (int midiNoteNumber, float velocity, SynthesiserSound* s, int /*currentPitchWheelPosition*/)
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{
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if (auto* sound = dynamic_cast<const SamplerSound*> (s))
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{
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pitchRatio = std::pow (2.0, (midiNoteNumber - sound->midiRootNote) / 12.0)
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* sound->sourceSampleRate / getSampleRate();
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sourceSamplePosition = 0.0;
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lgain = velocity;
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rgain = velocity;
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isInAttack = (sound->attackSamples > 0);
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isInRelease = false;
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if (isInAttack)
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{
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attackReleaseLevel = 0.0f;
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attackDelta = (float) (pitchRatio / sound->attackSamples);
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}
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else
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{
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attackReleaseLevel = 1.0f;
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attackDelta = 0.0f;
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}
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if (sound->releaseSamples > 0)
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releaseDelta = (float) (-pitchRatio / sound->releaseSamples);
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else
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releaseDelta = -1.0f;
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}
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else
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{
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jassertfalse; // this object can only play SamplerSounds!
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}
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}
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void SamplerVoice::stopNote (float /*velocity*/, bool allowTailOff)
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{
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if (allowTailOff)
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{
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isInAttack = false;
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isInRelease = true;
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}
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else
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{
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clearCurrentNote();
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}
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}
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void SamplerVoice::pitchWheelMoved (int /*newValue*/) {}
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void SamplerVoice::controllerMoved (int /*controllerNumber*/, int /*newValue*/) {}
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//==============================================================================
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void SamplerVoice::renderNextBlock (AudioBuffer<float>& outputBuffer, int startSample, int numSamples)
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{
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if (auto* playingSound = static_cast<SamplerSound*> (getCurrentlyPlayingSound().get()))
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{
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auto& data = *playingSound->data;
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const float* const inL = data.getReadPointer (0);
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const float* const inR = data.getNumChannels() > 1 ? data.getReadPointer (1) : nullptr;
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float* outL = outputBuffer.getWritePointer (0, startSample);
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float* outR = outputBuffer.getNumChannels() > 1 ? outputBuffer.getWritePointer (1, startSample) : nullptr;
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while (--numSamples >= 0)
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{
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auto pos = (int) sourceSamplePosition;
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auto alpha = (float) (sourceSamplePosition - pos);
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auto invAlpha = 1.0f - alpha;
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// just using a very simple linear interpolation here..
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float l = (inL[pos] * invAlpha + inL[pos + 1] * alpha);
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float r = (inR != nullptr) ? (inR[pos] * invAlpha + inR[pos + 1] * alpha)
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: l;
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l *= lgain;
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r *= rgain;
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if (isInAttack)
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{
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l *= attackReleaseLevel;
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r *= attackReleaseLevel;
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attackReleaseLevel += attackDelta;
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if (attackReleaseLevel >= 1.0f)
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{
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attackReleaseLevel = 1.0f;
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isInAttack = false;
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}
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}
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else if (isInRelease)
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{
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l *= attackReleaseLevel;
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r *= attackReleaseLevel;
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attackReleaseLevel += releaseDelta;
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if (attackReleaseLevel <= 0.0f)
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{
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stopNote (0.0f, false);
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break;
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}
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}
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if (outR != nullptr)
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{
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*outL++ += l;
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*outR++ += r;
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}
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else
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{
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*outL++ += (l + r) * 0.5f;
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}
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sourceSamplePosition += pitchRatio;
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if (sourceSamplePosition > playingSound->length)
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{
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stopNote (0.0f, false);
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break;
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}
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}
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}
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}
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} // namespace juce
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150
modules/juce_audio_formats/sampler/juce_Sampler.h
Normal file
150
modules/juce_audio_formats/sampler/juce_Sampler.h
Normal file
@ -0,0 +1,150 @@
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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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//==============================================================================
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/**
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A subclass of SynthesiserSound that represents a sampled audio clip.
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This is a pretty basic sampler, and just attempts to load the whole audio stream
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into memory.
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To use it, create a Synthesiser, add some SamplerVoice objects to it, then
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give it some SampledSound objects to play.
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@see SamplerVoice, Synthesiser, SynthesiserSound
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@tags{Audio}
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*/
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class JUCE_API SamplerSound : public SynthesiserSound
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{
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public:
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//==============================================================================
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/** Creates a sampled sound from an audio reader.
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This will attempt to load the audio from the source into memory and store
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it in this object.
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@param name a name for the sample
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@param source the audio to load. This object can be safely deleted by the
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caller after this constructor returns
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@param midiNotes the set of midi keys that this sound should be played on. This
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is used by the SynthesiserSound::appliesToNote() method
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@param midiNoteForNormalPitch the midi note at which the sample should be played
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with its natural rate. All other notes will be pitched
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up or down relative to this one
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@param attackTimeSecs the attack (fade-in) time, in seconds
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@param releaseTimeSecs the decay (fade-out) time, in seconds
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@param maxSampleLengthSeconds a maximum length of audio to read from the audio
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source, in seconds
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*/
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SamplerSound (const String& name,
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AudioFormatReader& source,
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const BigInteger& midiNotes,
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int midiNoteForNormalPitch,
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double attackTimeSecs,
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double releaseTimeSecs,
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double maxSampleLengthSeconds);
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/** Destructor. */
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~SamplerSound();
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//==============================================================================
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/** Returns the sample's name */
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const String& getName() const noexcept { return name; }
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/** Returns the audio sample data.
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This could return nullptr if there was a problem loading the data.
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*/
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AudioBuffer<float>* getAudioData() const noexcept { return data.get(); }
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//==============================================================================
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bool appliesToNote (int midiNoteNumber) override;
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bool appliesToChannel (int midiChannel) override;
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private:
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//==============================================================================
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friend class SamplerVoice;
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String name;
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std::unique_ptr<AudioBuffer<float>> data;
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double sourceSampleRate;
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BigInteger midiNotes;
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int length = 0, attackSamples = 0, releaseSamples = 0;
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int midiRootNote = 0;
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JUCE_LEAK_DETECTOR (SamplerSound)
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};
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//==============================================================================
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/**
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A subclass of SynthesiserVoice that can play a SamplerSound.
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To use it, create a Synthesiser, add some SamplerVoice objects to it, then
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give it some SampledSound objects to play.
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@see SamplerSound, Synthesiser, SynthesiserVoice
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@tags{Audio}
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*/
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class JUCE_API SamplerVoice : public SynthesiserVoice
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{
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public:
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//==============================================================================
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/** Creates a SamplerVoice. */
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SamplerVoice();
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/** Destructor. */
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~SamplerVoice();
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//==============================================================================
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bool canPlaySound (SynthesiserSound*) override;
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void startNote (int midiNoteNumber, float velocity, SynthesiserSound*, int pitchWheel) override;
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void stopNote (float velocity, bool allowTailOff) override;
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void pitchWheelMoved (int newValue) override;
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void controllerMoved (int controllerNumber, int newValue) override;
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void renderNextBlock (AudioBuffer<float>&, int startSample, int numSamples) override;
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private:
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//==============================================================================
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double pitchRatio = 0;
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double sourceSamplePosition = 0;
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float lgain = 0, rgain = 0, attackReleaseLevel = 0, attackDelta = 0, releaseDelta = 0;
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bool isInAttack = false, isInRelease = false;
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JUCE_LEAK_DETECTOR (SamplerVoice)
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};
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} // namespace juce
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Reference in New Issue
Block a user