JavaSound status

Alex Menkov Alexey.Menkov at Sun.COM
Mon May 21 09:18:54 PDT 2007

Hi all,

I'm glad to welcome the list members and hope that our joint work will be 
interesting and useful for both Sun and open-source community.

Let me overview current status of JavaSound.
As you know currently whole JavaSound implementation is closed. Unfortunately it 
was late decision (to close JavaSound) and there was no time to make it 
"partially" opened.
So #1 goal for now is split JavaSound into 2 parts (closed & opened) and 
open-source last one.
Open part will include the following:
- "direct audio" mixer implementation (DirectSound/ALSA/Solaris Audio Mixer);
- Ports mixer implementation (WinMM/ALSA/Solaris Audio Mixer);
- Midi i/o devices implementation (WinMM/ALSA);
- various file readers/writes, format converters.

Closed part will include all Beatnik code
Simple dropping this code will cause too much feature decline, so we have to 
make alternative implementation of some features before dropping old one.
What we need:
1) Software synthesizer.
   Current one support only .gm soundbanks (beatnik proprietary format) and does 
not support "industry standards" like .sf2. This task is big enough (in addition 
to Synthesyzer implementation it requires to implement set of related 
interfaces/classes). This task is not related with currently closed JavaSound 
classes so it's already opened as separate open-source project 
(audio-engine-dev; unfortunately name is not informative enough);
2) OSS mixer (for linux/solaris)
   I think OSS has a big chance to become Solaris standard audio engine so 
JavaSound have to handle it (both sampled and midi).

After implementing this 2 features it will be possible to drop closed part at 
all. JavaSound will drop support for .gm soundbanks and .rmf files (both formats 
are close (not public) and are not widely used), "Java Sound Audio Engine" mixer 

As soon as part of JavaSound implementation will be opened, it will be possible 
to start working on other issues (bug fixes and enhancements).


More information about the sound-dev mailing list