PluginProcessor.cpp

/*
  ==============================================================================

    This file was auto-generated!

    It contains the basic framework code for a JUCE plugin processor.

  ==============================================================================
*/

#include "PluginProcessor.h"

#include <algorithm>
#include <cmath>
#include <iostream>

#include "../JuceLibraryCode/JuceHeader.h"
#include "Atom.h"
#include "AudioBuffer.h"
#include "GlobalNoteStates.h"
#include "PluginEditor.h"
#include "SaveState.h"
#include "Synth.h"

//==============================================================================
AtomSynthAudioProcessor::AtomSynthAudioProcessor()
	: m_frequency(100.0f),
	  m_synth(AtomSynth::Synth())
{

}

AtomSynthAudioProcessor::~AtomSynthAudioProcessor()
{
}

//==============================================================================
const String AtomSynthAudioProcessor::getName() const
{
    return JucePlugin_Name;
}

bool AtomSynthAudioProcessor::acceptsMidi() const
{
   #if JucePlugin_WantsMidiInput
    return true;
   #else
    return false;
   #endif
}

bool AtomSynthAudioProcessor::producesMidi() const
{
   #if JucePlugin_ProducesMidiOutput
    return true;
   #else
    return false;
   #endif
}

double AtomSynthAudioProcessor::getTailLengthSeconds() const
{
    return 0.0;
}

int AtomSynthAudioProcessor::getNumPrograms()
{
    return 1;   // NB: some hosts don't cope very well if you tell them there are 0 programs,
                // so this should be at least 1, even if you're not really implementing programs.
}

int AtomSynthAudioProcessor::getCurrentProgram()
{
    return 0;
}

void AtomSynthAudioProcessor::setCurrentProgram (int index)
{
}

const String AtomSynthAudioProcessor::getProgramName (int index)
{
    return String();
}

void AtomSynthAudioProcessor::changeProgramName (int index, const String& newName)
{
}

//==============================================================================
void AtomSynthAudioProcessor::prepareToPlay (double sampleRate, int samplesPerBlock)
{
    // Use this method as the place to do any pre-playback
    // initialisation that you need..
	AtomSynth::GlobalNoteStates::s_sampleRate = sampleRate;
	AtomSynth::AudioBuffer::setSize(samplesPerBlock);
	m_synth.setup();
	m_synth.loadSaveState(AtomSynth::SaveState("[[0.000000:[][7.000000:6.000000:]][1.000000:[[0.000000:1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:]][[68.000000:154.000000:][[0.000000:2.000000:][1.400000:2.000000:][1.600000:2.400000:][1.800000:2.400000:][1.600000:2.200000:][1.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][0.745000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]]]]][2.000000:[[0.000000:0.000000:][-1.000000:-1.000000:][1.000000:0.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:][-1.000000:-1.000000:]][[126.000000:312.000000:][2.000000:[-0.280000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][0.120000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][1.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][-1.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][-0.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][0.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][1.000000:[2.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][0.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][-0.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][0.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][3.090000:][20.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][1.000000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]][0.500000:[-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:][-1.000000:0.000000:1.000000:1.000000:]]]]][3.000000:[[2.000000:0.000000:]][189.000000:465.000000:]]]"));
}

void AtomSynthAudioProcessor::releaseResources()
{
    // When playback stops, you can use this as an opportunity to free up any
    // spare memory, etc.
}

#ifndef JucePlugin_PreferredChannelConfigurations
bool AtomSynthAudioProcessor::setPreferredBusArrangement (bool isInput, int bus, const AudioChannelSet& preferredSet)
{
    // Reject any bus arrangements that are not compatible with your plugin

    const int numChannels = preferredSet.size();

   #if JucePlugin_IsMidiEffect
    if (numChannels != 0)
        return false;
   #elif JucePlugin_IsSynth
    if (isInput || (numChannels != 1 && numChannels != 2))
        return false;
   #else
    if (numChannels != 1 && numChannels != 2)
        return false;

    if (! AudioProcessor::setPreferredBusArrangement (! isInput, bus, preferredSet))
        return false;
   #endif

    return AudioProcessor::setPreferredBusArrangement (isInput, bus, preferredSet);
}
#endif

void AtomSynthAudioProcessor::processBlock (AudioSampleBuffer& buffer, MidiBuffer& midiMessages)
{
    const int totalNumInputChannels  = getTotalNumInputChannels();
    const int totalNumOutputChannels = getTotalNumOutputChannels();
    const int numSamples = buffer.getNumSamples();
    AtomSynth::GlobalNoteStates::s_currentTimestamp += numSamples;

#define LMMS_COMPATIBILITY
#ifdef LMMS_COMPATIBILITY //LMMS does weird things, the prepareToPlay function says 1024 samples / block, but actually gives 256 samples / block.
	if(numSamples != AtomSynth::AudioBuffer::getSize())
		prepareToPlay(AtomSynth::GlobalNoteStates::s_sampleRate, numSamples);
#endif /* LMMS_COMPATIBILITY */

    int time; MidiMessage message;
    for(MidiBuffer::Iterator i (midiMessages); i.getNextEvent(message, time);)
    {
    	if(message.isNoteOn())
    	{
    		double frequency = pow(2.0, (double(message.getNoteNumber()) - 69.0) / 12.0) * 440.0;
    		AtomSynth::GlobalNoteStates::addMidiNote(message);
    	}
    	else if(message.isNoteOff())
    	{
    		double frequency = pow(2.0, (double(message.getNoteNumber()) - 69.0) / 12.0) * 440.0;
    		AtomSynth::GlobalNoteStates::removeMidiNote(message);
    	}
    }

    // In case we have more outputs than inputs, this code clears any output
    // channels that didn't contain input data, (because these aren't
    // guaranteed to be empty - they may contain garbage).
    // This is here to avoid people getting screaming feedback
    // when they first compile a plugin, but obviously you don't need to keep
    // this code if your algorithm always overwrites all the output channels.
    for (int i = totalNumInputChannels; i < totalNumOutputChannels; ++i)
        buffer.clear (i, 0, buffer.getNumSamples());

    // This is the place where you'd normally do the guts of your plugin's
    // audio processing...
    AtomSynth::AudioBuffer result = m_synth.execute();
    for(int c = 0; c < AtomSynth::AudioBuffer::getChannels(); c++)
    {
    	for(int s = 0; s < AtomSynth::AudioBuffer::getSize(); s++)
    	{
    		buffer.addSample(c, s, result.getValue(c, s));
    	}
    }

    AudioPlayHead::CurrentPositionInfo info = AudioPlayHead::CurrentPositionInfo();
    if(AudioPlayHead * head = getPlayHead())
    	head->getCurrentPosition(info);
    if(info.bpm <= 1.0)
    	AtomSynth::GlobalNoteStates::s_bpm = 140.0f;
    else
    	AtomSynth::GlobalNoteStates::s_bpm = info.bpm;
}

//==============================================================================
bool AtomSynthAudioProcessor::hasEditor() const
{
    return true; // (change this to false if you choose to not supply an editor)
}

AudioProcessorEditor* AtomSynthAudioProcessor::createEditor()
{
    return new AtomSynthAudioProcessorEditor (*this);
}

//==============================================================================
void AtomSynthAudioProcessor::getStateInformation (MemoryBlock& destData)
{
    // You should use this method to store your parameters in the memory block.
    // You could do that either as raw data, or use the XML or ValueTree classes
    // as intermediaries to make it easy to save and load complex data.
}

void AtomSynthAudioProcessor::setStateInformation (const void* data, int sizeInBytes)
{
    // You should use this method to restore your parameters from this memory block,
    // whose contents will have been created by the getStateInformation() call.
}

//==============================================================================
// This creates new instances of the plugin..
AudioProcessor* JUCE_CALLTYPE createPluginFilter()
{
    return new AtomSynthAudioProcessor();
}