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/*
  this is a simple fader starter processing sketch by Zoltán Pálffy
 for use with Resolume 4 and 5, 
 if you use this code to earn money, donate at http://programs.palffyzoltan.hu
 distribute only with this header please.
 you'll need the processing framework - https://processing.org
 and Andreas Schlegel's oscP5, and NetP5 library  - http://www.sojamo.de/libraries/oscP5/
 
 this sketch will listen for clip launches in resolume, and layer opacity slider movement
 if you move the layer opacity from 0 it will relauch the clip that is playing in the layer.
 fader start.
 */
import netP5.*;
import oscP5.*;

int [] layerClip = new int [] {0, 0, 0, 0};
int [] layerMute = new int [] {0, 0, 0, 0};
OscP5 oscP5;
NetAddress myRemoteLocation;


void setup() {

  size(400, 400);
  frame.setTitle("FaderStarter for Resolume");
  frameRate(25);
  // start oscP5, listening for incoming messages at port 7001 set resolume OSC output to this port
  oscP5 = new OscP5(this, 7001);

  // set resolume OSC input to this port  : 7000
  // ip is localhost
  myRemoteLocation = new NetAddress("127.0.0.1", 7000);
}


void draw() {
  background(0);
  try {
    fill(200, 200, 250);
    text("fader starter for Resolume - http://programs.palffyzoltan.hu", 10, 20);
    for (int i=1; i< layerMute.length; i++) {
      fill(200, 200, 50);
      String addition = "";
      if (layerMute[i] == 1) {
        addition = " waiting for fader start";
        fill(200, 100, 100);
      }
      if (layerClip[i] == 0) 
      { 
        fill(100);  
        text( "no clip playing in layer "+i, 10, i*20+20);
      } else {
        text("active clip in layer "+i+" : "+layerClip[i] + addition, 10, i*20+20);
      }
    }
  }
  catch(Exception e) {
  }
}

int [] growIntArray (int [] in, int to) {
  int [] ret = new int[to];
  for (int i=0; i < ret.length; i++) {
    if (i < in.length) ret[i] = in[i];  //copy existing
    else ret[i] = 0;  // fill others with 0
  }
  return ret;
}

void checkAndGrow(int layerNumber) {
  if (layerNumber > layerMute.length) {  // array too small to store this many layers
    println(layerMute.length, "array needs to grow to ", layerNumber );
    layerMute = growIntArray(layerMute, layerNumber + 1);
    layerClip = growIntArray(layerClip, layerNumber + 1);
  }
}

void oscEvent(OscMessage message) {
  try {
    String msg = message.addrPattern();
    //look for layer opacity messages 
    if (match(msg, "/layer.*/video/opacity/values") != null) {
      int layerNumber = Integer.parseInt(msg.replaceAll("/layer(\\d+)/video/opacity/values", "$1"));
      checkAndGrow(layerNumber);
      if (message.get(0).floatValue() == 0f) {
        layerMute[layerNumber] = 1;  // if layer opacity is set to 0 store that info
      } else 
      if (layerMute[layerNumber] == 1) {
        //relaunch clip 
        layerMute[layerNumber] = 0;
        sendRelaunchToClip(layerNumber);
      }
    }
    //look for clip launch messages 
    if (match(msg, "/layer.*/clip.*/connect") != null) {
      int layerNumber = Integer.parseInt(msg.replaceAll("/layer(\\d+)/clip(\\d+)/connect", "$1"));
      int clipNumber = Integer.parseInt(msg.replaceAll("/layer(\\d+)/clip(\\d+)/connect", "$2"));
      int action = message.get(0).intValue();
      checkAndGrow(layerNumber);
      if (action == 1) { 
        layerClip[layerNumber] = clipNumber;
      } else { 
        if (layerClip[layerNumber] == clipNumber) layerClip[layerNumber] = 0;
      }
    }
  }
  catch(Exception e) {
    e.printStackTrace();
  }
}

void sendRelaunchToClip(int layer) {
  if (layerClip[layer] != 0 ) {
    OscMessage myMessage = new OscMessage("/layer"+layer+"/clip"+layerClip[layer]+"/connect");
    myMessage.add(1);
    oscP5.send(myMessage, myRemoteLocation);
  }
}