/*
   Peacock-8 VA polysynth

   Copyright 2024 Gordon JC Pearce <gordonjcp@gjcp.net>

   Permission to use, copy, modify, and/or distribute this software for any
   purpose with or without fee is hereby granted, provided that the above
   copyright notice and this permission notice appear in all copies.

   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
   SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
   OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
   CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#include "peacock.hpp"

double sampleRate;
uint32_t bufferSize;

START_NAMESPACE_DISTRHO

Peacock::Peacock() : Plugin(parameterCount, 0, 0) {
    d_debug("peacock constructor\n");

    sampleRate = getSampleRate();
    bufferSize = getBufferSize();
    chorus = new Chorus();
    m = new Module();
    ic1 = new Assigner;
    ic1->voice = voice;
    m->chorus = chorus;


}

Peacock::~Peacock() {
}

void Peacock::initAudioPort(bool input, uint32_t index, AudioPort& port) {
    port.groupId = kPortGroupStereo;
    Plugin::initAudioPort(input, index, port);

    if (!input && index == 0) port.name = "Left Out";
    if (!input && index == 1) port.name = "Right Out";
}

void Peacock::runMidi(const MidiEvent* ev, uint32_t ev_count, uint32_t timeLimit) {
    // handle a sample chunk of MIDI events
    uint32_t i;
    if (ev_count == 0) return;  // nothing to do anyway

    // there are MIDI events, loop through them
    for (i = lastEvent; i < ev_count; i++) {
        if (ev[i].frame > timeLimit) break;  // only up to the start of the next chunk
        ic1->handleMidi((MidiEvent*)&ev[i]);
    }
    lastEvent = i;
}

void Peacock::run(const float**, float** outputs, uint32_t frames, const MidiEvent* midiEvents, uint32_t midiEventCount) {
    // calculate a block of samples, allowing for the synth timing not dividing exactly
    uint32_t framePos = 0;
    uint32_t sizeThisTime = 0;
    framesLeft = frames;

    // now clear the left and right audio buffers
    memset(outputs[0], 0, frames * sizeof(float));
    memset(outputs[1], 0, frames * sizeof(float));

    // if there were any events that happen between now and the end of this block, process them
    lastEvent = 0;
    runMidi(midiEvents, midiEventCount, blockLeft);

    while (framePos < frames) {
        if (blockLeft == 0) {
            // no more samples to calculate in this update period
            blockLeft = sampleRate / 238;  // update rate in Hz
            runMidi(midiEvents, midiEventCount, framePos + blockLeft);

            m->run(voice);
        }

        // how many frames to do? Are we about to run off an update block
        sizeThisTime = (framesLeft < blockLeft) ? framesLeft : blockLeft;

        // now run all the voices for this chunk of samples
        for (uint32_t i = 0; i < NUM_VOICES; i++) {
            voice[i].run(m, outputs[0] + framePos, sizeThisTime);
        }

        framePos += sizeThisTime;
        framesLeft -= sizeThisTime;
        blockLeft -= sizeThisTime;
    }

    // now we've assembled a full chunk of audio
    chorus->run(outputs[0], outputs, frames);

}

Plugin* createPlugin() { return new Peacock(); }

END_NAMESPACE_DISTRHO