I've written a class for myself that provides some of the functions of a javax.sound.sampled.Clip, and adds some additional capabilities (multiple/overlapping playback, varispeed playback). I am thinking of revising it, so that it becomes a class that both fully implements the Clip interface as well as providing my additional methods. In doing so, I thought it would be interesting to look at the code that implements Clip.
But this leads to a really basic question. The code for Clip is of course just the Interface code, the list of methods to implement, not their actual implementation. So, I am wondering, for example, just how IS the data for a Clip held internally? Where are the variable & pointers and the methods that DO the provided functions?
I downloaded the source code for
Java and am poking around, and found j2se/src/share/classes/javax/sound/sampled/ which contains the source code for Clip. Also viewed AudioSystem which is used to provide a DataLine that has been cast to a Clip. But that is all, and DataLine is also an Interface.
With a class like HashMap, which implements Map, in this source file we get to see how the methods are coded. Where would someone find something like this for Clip? There has to be some concrete class that makes all the methods concrete, doesn't there? I suspect I'm having some sort of basic conceptual confusion.
EDIT: just found AudioInputStream. Perhaps the most correct course of action would be to start with making my new super-duper clip class extend AudioInputStream and implement Clip? But the Clip is supposed to have loaded the data from the input stream into memory. Still grappling...
