I'm trying to make simple slideshow (with or without transition effects) for projection mapping.
I have in processing OutOfMemory problem because 250-300 images (1280x720) have been loaded in setup function.
Then I have found FileSequence example in toxiclibs library that works pretty well although framerate drops dramatically (5-10).
What I need is to control appearance of images using minim library and SoundEnergy ( beat.isOnset(), beat.isKick(), beat.isHat(), beat.isSnare() ).
The images would be changed when specific audio parameter exceeds a certain value ( in rhythm).

Welcome with good ideas...

first attempt:

1. import processing.opengl.*;
2. import codeanticode.glgraphics.*;
3. import toxi.util.*;
4. import java.awt.FileDialog;
5. import ddf.minim.*;
6. import ddf.minim.analysis.*;
7. 
   
8. Minim minim;
9. AudioPlayer song;
10. BeatDetect beat;
11. FileSequenceDescriptor fsd;
12. Iterator images;
13. String imgPath;
14. PImage img;
15. 
    
16. void setup() {
17.   size(1280, 720, GLConstants.GLGRAPHICS);
18.   minim = new Minim(this);
19.   song = minim.loadFile("marcus_kellis_theme.mp3", 2048);
20.   song.play();
21.   // a beat detection object song SOUND_ENERGY mode with a sensitivity of 10 milliseconds
22.   beat = new BeatDetect();
23.   String path = FileUtils.showFileDialog(frame, "Choose start frame...", dataPath(""), new String[] {
24.     ".tga", ".png", ".jpg" }, FileDialog.LOAD);
25.   // the path variable will be null if the user has cancelled
26.   if (path != null) {
27.     // get an descriptor for this base path
28.     // this will analyse and identify the length of the sequence
29.     // see javadocs for further details
30.     fsd=FileUtils.getFileSequenceDescriptorFor(path);
31.     println("start: "+fsd.getStartIndex()+" end: "+fsd.getFinalIndex());
32.     // now ask descriptor for an iterator which will return
33.     // absolute file paths for all images in this sequence in succession
34.     images=fsd.iterator();
35.   }
36.   else {
37.     // quit if user cancelled dialog...
38.     exit();
39.   }
40. }
41. 
    
42. void draw() {
43.   background(0);
44.   beat.detect(song.mix);
45.   if (!images.hasNext()) {
46.     images=fsd.iterator();
47.   }
48.   if ( beat.isOnset() ) {
49.     imgPath=(String)images.next();
50.     img=loadImage(imgPath);
51.     image(img, 0, 0, width, height);
52.   }
53.   println(frameRate);
54. }
55. 
    
56. void stop()
57. {
58.   // always close Minim audio classes when you are finished with them
59.   song.close();
60.   // always stop Minim before exiting
61.   minim.stop();
62.   super.stop();
63. }