synth.cpp

void AdditiveSynth::processBlock(juce::AudioBuffer<float>& buffer, juce::MidiBuffer& midiMessages)
{
    // might want to avoid doing this for voices that are not active or
    // if parameters have not changed, but this will have to do for now
    for(auto& v : m_voices)
    {
        v.updateState();
    }
    auto bufptrs = buffer.getArrayOfWritePointers();
    auto it = midiMessages.begin();
    for (int i=0;i<buffer.getNumSamples();++i)
    {
        // Using while, because we may have multiple messages at the same sample position
        // This might be somewhat inefficient in Juce context, but we will do this like this
        // because Clap processing will require doing it similarly anyway
        while (it!=midiMessages.end() && (*it).samplePosition==i)
        {
            // suspected inefficiency here because getMessage returns a copy for some reason
            const auto msg = (*it).getMessage();
            if (msg.isNoteOn())
            {
                handleNoteOn(-1,-1,msg.getNoteNumber(),-1,msg.getFloatVelocity());
                //DBG("note on " << msg.getNoteNumber() << " at sample pos " << i );
            }
            else if (msg.isNoteOff())
            {
                handleNoteOff(-1,-1,msg.getNoteNumber(),-1);
                //DBG("note off " << msg.getNoteNumber() << " at sample pos " << i );
            }
            ++it;    
        }
        float voicesums[2] = {0.0f,0.0f};
        for(auto& v : m_voices)
        {
            if (v.m_is_available==false)
            {
                v.step();
                voicesums[0] += v.output_frame[0];
                voicesums[1] += v.output_frame[1];
            }
        }
        bufptrs[0][i] = voicesums[0];
        bufptrs[1][i] = voicesums[1];
    }
}