LCC6310 Projects, Fall 2004

Code

/*
Please download the zip file from <a>http://www.cc.gatech.edu/~parthb/HTML.zip</a>

Extract this zip in the default folder and run the file as you would in processing.

*/
//Jazz happens to be one of my favorite genres of music, and I enjoy it due to its unstructured nature. 
// HTML as we know follows this strict tag structure. I thought it might be interesting to see how I could perhaps 
// mix and match HTML and see what kind of sounds it can create. As of now, this code will only generate the sound for certain URLs that I hardcode.
// I plan to add the functionality where the user can type in a url and the program will take it from there.
import java.applet.*;
import javax.swing.*;
import java.net.*;
import java.awt.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
import javax.swing.text.html.parser.*;
import java.io.*;
import java.util.*;
import javax.imageio.*;

class AudioViz extends BApplet {
  Sample test=null;
  HTMLReader html;
  static ArrayList visited = new ArrayList();
  static ArrayList queued = new ArrayList();
  public static Vector ambient=new Vector();
  public static Vector drums=new Vector();
  public static Vector guitars=new Vector();
  public static Vector pianos=new Vector();
  public static Vector playlist=new Vector();
  public static Vector textlist=new Vector();
  boolean init=false;
  BFont ft;
  String strtmp=" ";
  void setup(){
    ft=loadFont("Arial_Rounded_MT_Bold.vlw");
    textFont(ft,44);

    framerate(25000);
    background(0);
    size(600,600);
    boolean soniaInstalled;
    soniaInstalled = Sonia.getStatus();
    if(soniaInstalled){
      println("Sonia has been successfully installed");
      Sonia.start(this);
    }
    else{
      println("You are not online and Sonia is not installed");
    }
    //This will initialize all our instruments.
    loadSamples();
    queued.add(new ImageParserCallbacks("http://www.lcc.gatech.edu", 2));
    textlist.add("Jazzing up the HTML");
  }

  void loadSamples(){
    drums=loadSounds("sketchbook\\default\\audio_viz\\data\\drum");
    pianos=loadSounds("sketchbook\\default\\audio_viz\\data\\piano");
    guitars=loadSounds("sketchbook\\default\\audio_viz\\data\\guitar");
    ambient=loadSounds("sketchbook\\default\\audio_viz\\data\\ambient");
    println("Loaded File");
  }

  Vector loadSounds(String directory){
    Vector temp=new Vector();
    File dir=null;
    try{
      dir=new File(directory);
    }catch(Exception e){
      e.printStackTrace();
      println("File not Found");
    }
    if(dir.isDirectory()){
      String[] children=dir.list();
      String newFile=null;
      Sample s=null;
      for(int i=0;i<children.length;i++){
        try{
          String tempFile=dir.getAbsolutePath()+"\\"+children[i];
          newFile=tempFile.substring(tempFile.lastIndexOf("data")+5);
          s=new Sample(newFile);
          temp.add(s);
        }catch(Exception e){
          e.printStackTrace();
        }
      }
    }
    return temp;
  }

  void loop() {
    ImageParserCallbacks temp=(ImageParserCallbacks)queued.get(0);
    startParse(temp);
    if(playlist.size()>100000){
      playlist.clear();
    }
    for(int i =0;i<playlist.size();i++){
      test=(Sample)playlist.get(i);
      if(test.isPlaying()){
        continue;
      }
      else{
        playlist.remove(i);
        test.repeat();
      }
    }
    for(int j=0;j<textlist.size();j++){
    try{
        strtmp=(String)textlist.get(j);
        textlist.remove(j);
        if(strtmp==null)
          continue;
        textSize((int)random(1,30));
        fill((int)random(50,255),(int)random(50,255),(int)random(50,255));
        text(strtmp,(int)random(0,400),(int)random(0,600));

        }catch(Exception e){
          e.printStackTrace();
          println("TEXT "+strtmp);
          continue;
        }
   }
    
  }

  void startParse(ImageParserCallbacks pageToParse) {
    int count = pageToParse.depthCount;
    String href = pageToParse.href;
    if (count < 3) {
      html = new HTMLReader();
      html.parse(href, pageToParse);
    }
  }

  boolean checkLink(String href) {
    if(href == "" || href == null)
    return true;
    for(int i = 0; i < visited.size(); i++) {
      String temp = (String)visited.get(i);
      if(temp.equals(href)) {
        return true;
      }
    }
    return false;
  }
  //This method cleans the Relative URL that is present in the web page and completes it with the act
  String cleanRelativeURL(String relLink, String currLink) {
    String tempHref = relLink;
    String href = currLink;
    //System.out.println("THE URL IS"+relLink);
    if((tempHref != null) && (!tempHref.equals(""))) {
      if(!tempHref.startsWith("http://")) {
        String prefix = href.substring(0, href.lastIndexOf('/') + 1);
        if(tempHref.charAt(0) == '/') {
          if (tempHref.length() > 1) {
            tempHref = tempHref.substring(1, tempHref.length());
          } else {
            tempHref = "";
          }
        }
        tempHref = prefix + tempHref;
      }
    }
    return tempHref;
  }

  class ImageParserCallbacks extends HTMLEditorKit.ParserCallback {
    int depthCount;
    String href;
    boolean gottitle=false;
    
    ImageParserCallbacks(String href, int count) {
      depthCount = count;
      this.href = href;
    }

    public void handleSimpleTag(HTML.Tag tag, MutableAttributeSet attrib, int pos) {
      if (tag.equals(HTML.Tag.IMG)) {
        AudioViz.playlist.add((Sample)AudioViz.drums.get((int)random(0,AudioViz.drums.size())));
        if (attrib.getAttribute(HTML.Attribute.ALT) != null) {
          String text = (String)attrib.getAttribute(HTML.Attribute.ALT);
          String imageURL = cleanRelativeURL((String)attrib.getAttribute(HTML.Attribute.SRC), href);
          AudioViz.textlist.add(imageURL);
        }
        
      }
           
    }

    public void handleStartTag(HTML.Tag tag, MutableAttributeSet attrib, int pos) {
      //Handle <HTML> tag here
      if(tag.equals(HTML.Tag.HTML)){
        AudioViz.playlist.add((Sample)AudioViz.ambient.get((int)random(0,AudioViz.ambient.size())));
        AudioViz.textlist.add("<html>");
      }
      if(tag.equals(HTML.Tag.HEAD)){
        AudioViz.textlist.add("<head>");
      }
      if(tag.equals(HTML.Tag.TITLE)){
        gottitle=true;
      }
      if(tag.equals(HTML.Tag.META)){
            String content= (String)attrib.getAttribute(HTML.Attribute.CONTENT);
            AudioViz.textlist.add(content);
      }
      //Handle <BODY> tag here.
      if(tag.equals(HTML.Tag.BODY)){
        AudioViz.playlist.add((Sample)AudioViz.ambient.get((int)random(0,AudioViz.ambient.size())));
        //Get all the attributes of the Body tag and add them to a string.
        String bodyString="<body ";
        bodyString+="bgcolor="+(String)attrib.getAttribute(HTML.Attribute.BGCOLOR);
        bodyString+=" text="+(String)attrib.getAttribute(HTML.Attribute.TEXT);
        bodyString+=">";
        AudioViz.textlist.add(bodyString);
      }
      //Handle Anchor tags here.
      if (tag.equals(HTML.Tag.A)) {
        String tempHref = (String)attrib.getAttribute(HTML.Attribute.HREF);
        tempHref = cleanRelativeURL(tempHref, href);
        if(!checkLink(tempHref)) {
          queued.add(new ImageParserCallbacks(tempHref, depthCount + 1));
          visited.add(new String(tempHref));
        }
        AudioViz.playlist.add((Sample)AudioViz.guitars.get((int)random(0,AudioViz.guitars.size())));
        AudioViz.textlist.add(tempHref);
      }

      //Handle P tag here.
      if(tag.equals(HTML.Tag.P)){
        AudioViz.textlist.add("<p>");
        AudioViz.playlist.add((Sample)AudioViz.pianos.get((int)random(0,AudioViz.pianos.size())));
      }
      //Handle table tag here.
      if(tag.equals(HTML.Tag.TABLE)){
        AudioViz.textlist.add("<table");
        AudioViz.playlist.add((Sample)AudioViz.drums.get((int)random(0,AudioViz.drums.size())));
        String tableString="";
        tableString+=" bgcolor="+(String)attrib.getAttribute(HTML.Attribute.BGCOLOR);
        tableString+=" cellspacing="+(String)attrib.getAttribute(HTML.Attribute.CELLSPACING);
        tableString+=" cellpadding="+(String)attrib.getAttribute(HTML.Attribute.CELLPADDING);
        tableString+=" width="+(String)attrib.getAttribute(HTML.Attribute.WIDTH);
        tableString+=" height="+(String)attrib.getAttribute(HTML.Attribute.HEIGHT);
        tableString+="/>";
        
      }
      if(tag.equals(HTML.Tag.TR)){
        AudioViz.playlist.add((Sample)AudioViz.guitars.get((int)random(0,AudioViz.guitars.size())));
        AudioViz.textlist.add("<tr></tr>");
      }
    }

    public void handleText(char[] data, int pos) {
      String text=new String(data);
      if(gottitle){
        AudioViz.textlist.add("<title>"+data+"</title>");
        gottitle=false;
      }
      else{
        if(text!=null)
          AudioViz.textlist.add(text);
      }
      
    }
  }
}