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

    HarmoniumAudioSource.cpp
    Created: 3 Dec 2019 9:09:18pm
    Author:  Anantha Girijavallabhan

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

#include "HarmoniumAudioSource.h"

HarmoniumAudioSource::HarmoniumAudioSource (MidiKeyboardState& keyState)
: keyboardState(keyState)
{
    for (int i = 0; i < 8; i++)
    {
        samplerSynth.addVoice (new SamplerVoice ());
    }
    
}

void HarmoniumAudioSource::setUsingHarmoniumSample ()
{
    AiffAudioFormat aifFormat;
    
    auto fileName = "Harmonium.aif";
    
    auto parentDirectory = File::getSpecialLocation (File::SpecialLocationType::currentApplicationFile).getParentDirectory ();
    
    while(parentDirectory.getFileName () != "SDARagaTutor")
    {
        parentDirectory = parentDirectory.getParentDirectory ();
    }
    
    auto sampleFile = parentDirectory.getChildFile ("Samples").getChildFile (fileName);
    
    
    std::unique_ptr<AudioFormatReader> audioReader (aifFormat.createReaderFor(sampleFile.createInputStream(), true));
    
    BigInteger allNotes;
    allNotes.setRange (0, 128, true);
    
    samplerSynth.clearSounds();
    samplerSynth.addSound ( new SamplerSound ("Harmonium", *audioReader, allNotes, 61, 0.4, 0.1, 10.0));
    
    
}
                                                    
void HarmoniumAudioSource::prepareToPlay (int samplesPerBlockExpected, double sampleRate)
{
    midiMessageCollector.reset (sampleRate);
    
    samplerSynth.setCurrentPlaybackSampleRate (sampleRate);
}

void HarmoniumAudioSource::releaseResources ()
{
    
}

void HarmoniumAudioSource::getNextAudioBlock (const AudioSourceChannelInfo &bufferToFill)
{
    bufferToFill.clearActiveBufferRegion ();
    
    MidiBuffer incomingMidi;
    
    int startSample = bufferToFill.startSample;
    
    int numSamples = bufferToFill.numSamples;
    
    midiMessageCollector.removeNextBlockOfMessages (incomingMidi, bufferToFill.numSamples);
    
    keyboardState.processNextMidiBuffer (incomingMidi, startSample, numSamples, true);
    
    samplerSynth.renderNextBlock (*bufferToFill.buffer, incomingMidi, startSample, numSamples);
}