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WaveformGist.cpp
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WaveformGist.cpp
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class SubWaveViewComponent : public juce::Component {
public:
SubWaveViewComponent(const VisibleRangeDataModel& vr):visibleRange(vr) {
}
~SubWaveViewComponent() {
}
void resized() override {
osBuffer.setSize(1, getWidth()*4.0);
}
int gcd(int a, int b){
if (a == 0){
return b;
}else{
return gcd(b % a, a);
}
}
std::tuple<float,float,bool> minmaxorder(float *p, int length){
float mi = std::numeric_limits<float>::max();
float ma = -std::numeric_limits<float>::max();
int ia = 0;
int ii = 0;
for(int i =0; i < length; i++){
if(p[i] <= mi)
{
mi = p[i];
ii = i;
}
if(p[i] >= ma)
{
ma = p[i];
ia = i;
}
}
return std::tuple<float,float,bool> (mi,ma, ii < ia);
}
void paint(juce::Graphics &g) override {
juce::Path path;
juce::Path p2;
int sampleLength = rd.getNumSamples();
float flength = visibleRange.getVisibleRange().getLength();
int vstart = visibleRange.getVisibleRange().getStart()*sampleLength;
int vlen = visibleRange.getVisibleRange().getLength()*sampleLength;
int vend = visibleRange.getVisibleRange().getEnd()*sampleLength;
float ratio = (44100.0*flength) / getWidth();
float sourcePos = 0.0f;
int k = 0;
if(ratio > 0 && ratio <= 2.0) {
while(sourcePos < vlen-1){
auto pos = (int) sourcePos;
auto alpha = (float) sourcePos - pos;
auto invAlpha = 1.0f - alpha;
float s = rd.getSample(0, pos+vstart) * invAlpha + rd.getSample(0, pos + vstart + 1) * alpha;
float m = juce::jmap(-s,-1.0f,1.0f,0.0f, (float) getHeight());
if(sourcePos == 0){
path.startNewSubPath(sourcePos/vlen*getWidth(), m);
}else{
path.lineTo(sourcePos/vlen*getWidth(),m);
}
sourcePos += ratio;
k++;
}
}else{
float sourcePos = 0;
while(sourcePos < vlen-ratio){
auto pos = (int) sourcePos;
float *list = rd.getSubBlock(pos+vstart,(int)ratio).getChannelPointer(0);
std::tuple<float,float,bool> fmi = minmaxorder(list, (int)ratio);
float mi = -std::get<0>(fmi);
float ma = -std::get<1>(fmi);
mi = juce::jmap(mi,-1.0f,1.0f,0.0f,1.0f);
ma = juce::jmap(ma,-1.0f,1.0f,0.0f,1.0f);
mi = juce::jmap(mi,0.0f,1.0f,0.0f,(float)getHeight());
ma = juce::jmap(ma,0.0f,1.0f,0.0f,(float)getHeight());
float md = (mi+ma)/2.0;
bool isMinFirst = std::get<2>(fmi);
float mt = sourcePos+ratio/2.0;
float st = sourcePos+ratio;
if(sourcePos == 0.0) {
if(isMinFirst){
path.startNewSubPath(sourcePos/vlen*getWidth(), mi);
path.lineTo(sourcePos/vlen*getWidth(), md);
path.lineTo(st/vlen*getWidth(), ma);
}else{
path.startNewSubPath(sourcePos/vlen*getWidth(), ma);
path.lineTo(mt/vlen*getWidth(), md);
path.lineTo(st/vlen*getWidth(), mi);
}
}else{
if(isMinFirst){
path.lineTo(sourcePos/vlen*getWidth(), mi);
path.lineTo(mt/vlen*getWidth(), md);
path.lineTo(st/vlen*getWidth(), ma);
}else{
path.lineTo(sourcePos/vlen*getWidth(), ma);
path.lineTo(mt/vlen*getWidth(), md);
path.lineTo(st/vlen*getWidth(), mi);
}
}
k++;
sourcePos += ratio;
}
}
g.setColour(juce::Colour(90,150,210));
g.strokePath(path,juce::PathStrokeType(1.0f+M_PI/8,juce::PathStrokeType::JointStyle::curved));
}
juce::dsp::AudioBlock<float> rd;
VisibleRangeDataModel visibleRange;
juce::AudioBuffer<float> osBuffer;
float minBuffer[4096];
float maxBuffer[4096];
float residue[4096];
};
class SubViewComponent : public juce::Component , public DataModel::Listener,
public juce::AudioProcessorValueTreeState::Listener {
public:
SubViewComponent(DataModel & dm, juce::AudioProcessorValueTreeState &s):
dataModel(dm),
state(s),
levelMseg(dataModel.getMainMSEGModel()),
wave(dataModel.getSubViewVisibleRange()),
ruler(dataModel.getSubViewVisibleRange())
{
addAndMakeVisible(ruler);
addAndMakeVisible(wave);
addAndMakeVisible(levelMseg);
renderSynth.setCurrentPlaybackSampleRate(44100.0);
renderSynth.addVoice(new SubVoice());
renderSynth.addSound(new SubSound());
os2x = std::make_unique<juce::dsp::Oversampling<float>>(2);
os2x->addOversamplingStage(juce::dsp::Oversampling<float>::filterHalfBandPolyphaseIIR, 0.05, -90.0, 0.05, -90.0);
os2x->initProcessing(44100.0*4);
renderData.setSize(2, 4*44100.0);
renderData.clear();
dataModel.addListener(*this);
state.addParameterListener(Params::kSubLevel, this);
state.addParameterListener(Params::kSubPitchHi, this);
state.addParameterListener(Params::kSubPitchLow, this);
state.addParameterListener(Params::kSubPitchDecay, this);
state.addParameterListener(Params::kSubPitchVelocity, this);
}
~SubViewComponent() {
}
void parameterChanged(const juce::String ¶meterID, float newValue) override {
if(auto * subsound = static_cast<SubSound*>(renderSynth.getSound(0).get())) {
subsound->m = 1;
if(parameterID == Params::kSubLevel) {
subsound->setSubLevel(newValue);
}else if (parameterID == Params::kSubPitchHi) {
subsound->setSubPitchHi(newValue);
}else if (parameterID == Params::kSubPitchLow) {
subsound->setSubPitchLow(newValue);
}else if (parameterID == Params::kSubPitchDecay) {
subsound->setSubPitchDecay(newValue);
}else if (parameterID == Params::kSubPitchVelocity) {
subsound->setSubPitchVelocity(newValue);
}
}
juce::MessageManager::callAsync([this] {
this->refresh();
});
}
void refreshSub() {
renderData.clear();
juce::MidiMessage n(juce::MidiMessage::noteOn(1, 48, 1.0f));
juce::MidiBuffer mb(n);
mb.addEvent(juce::MidiMessage::noteOff(1, 48, 1.0f), renderData.getNumSamples()/4-1);
mb.addEvent(juce::MidiMessage::noteOn(1, 48, 1.0f), renderData.getNumSamples()/4);
mb.addEvent(juce::MidiMessage::noteOff(1, 48, 1.0f), renderData.getNumSamples()/4*2-1);
mb.addEvent(juce::MidiMessage::noteOn(1, 48, 1.0f), renderData.getNumSamples()/4*2);
mb.addEvent(juce::MidiMessage::noteOff(1, 48, 1.0f), renderData.getNumSamples()/4*3-1);
auto sampleLength = renderData.getNumSamples();
// auto rng = dataModel.getSubViewVisibleRange();
// auto fstart = rng.getVisibleRange().getStart();
// auto flength = rng.getVisibleRange().getLength();
// auto fend = rng.getVisibleRange().getEnd();
//
renderSynth.renderNextBlock(renderData, mb,0, sampleLength);
}
void refresh() {
refreshSub();
juce::dsp::AudioBlock<float> rd (renderData);
wave.rd = rd;
wave.repaint();
}
void setMainMSEGChanged(std::shared_ptr<mseg_vec> m) override {
if(auto * subsound = static_cast<SubSound*>(renderSynth.getSound(0).get())) {
subsound->mainMSEGToUse = m;
}
juce::MessageManager::callAsync([this] {
this->refresh();
});
}
void paint(juce::Graphics &g) override {
g.fillAll(juce::Colour(39,41,44));
}
void resized() override {
auto b = getLocalBounds().reduced(proportionOfHeight(0.1f));
ruler.setBounds(b.removeFromTop(proportionOfHeight(0.1f)).withWidth(882));
levelMseg.setBounds(b.withWidth(882));
wave.setBounds(b.withWidth(882));
wave.toBack();
refresh();
}
juce::Rectangle<int> viewArea;
DataModel dataModel;
juce::AudioProcessorValueTreeState & state;
MSEGComponent levelMseg;
SubWaveViewComponent wave;
Ruler ruler;
juce::Synthesiser renderSynth;
juce::AudioBuffer<float> renderData;
std::unique_ptr<juce::dsp::Oversampling<float>> os2x;
};