Pfthb

I am looking at the JMF code source, written out as an answer on this thread by user Mavie. As I try to trace the code, from the function doIt --> ImageDataSource --> ImageSourceStream, I'm not too clear how the program reads the list of image files from the vector.

As far as I know, this part of the code read(Buffer buf) reads the image data file, but this function does not seem to be called by the processor from within the code itself.

I have managed to get the code running perfectly fine, but do not understand the logical flow. How/Where does the processor call this function to read and generate the video?

read(Buffer buf) - part of the entire source code

/**
 * This is called from the Processor to read a frame worth of video
 * data.
 */
 public void read(Buffer buf) throws IOException 

 // Check if we've finished all the frames.
 if (nextImage >= images.size()) 
 // We are done. Set EndOfMedia.
 //System.err.println("Done reading all images.");
 buf.setEOM(true);
 buf.setOffset(0);
 buf.setLength(0);
 ended = true;
 return;
 

 String imageFile = (String) images.elementAt(nextImage);
 nextImage++;

 //System.err.println(" - reading image file: " + imageFile);

 // Open a random access file for the next image.
 RandomAccessFile raFile;
 raFile = new RandomAccessFile(imageFile, "r");

 byte data = null;

 // Check the input buffer type & size.

 if (buf.getData() instanceof byte)
 data = (byte) buf.getData();

 // Check to see the given buffer is big enough for the frame.
 if (data == null