Requested buffer too large - but data is already in memory

Question

Hello all,
I am writing a program that generates sound and then uses the Java Sound API to play it back over the speakers. Until recently, using clips have not led to any problems. On two computers I can play the sound without a hitch. However, on the newest computer (and also with the largest specs and especially more RAM), I am getting an error while trying to play back the sound. The exception that is thrown is:
javax.sound.sampled.LineUnavailableException: Failed to allocate clip data: Requested buffer too large.
I find this odd because the buffer already exists in memory: I don't have to read in a .wav file or anything because I am creating the audio during the course of my program's execution (this is also why I use Clips instead of streaming - the values are saved as doubles during the calculations and then converted into a byte array, which is the buffer that is used in the clip.open() method call). It has no problems allocating the double array, the byte array, or populating the byte array. It is only thrown during clip.open() call. I also find it strange that it would work on two other computers, both of which have less RAM (it runs fine on a machine with 512MB and 2GB of RAM, both XP 32-bit). The only difference is that the computer with the issue is running Windows 7 (the RTM build), 64-bit with 6GB of RAM. I am running it through Netbeans 6.7.1 with memory options set to use up to 512MB - but it's never gone up that far before. And I've checked the size of the buffer on all three computers and they are all the same.
Does anyone know what the issue could be or how to resolve it? I am using JDK6 if that matters. Thank you for your time.
Edited by: Sengin on Sep 18, 2009 9:40 PM

Answer 1

Thanks for your answer. I'll try that.
I figured it had something to do with Windows 7 since it technically hasn't been released yet (however I have the RTM version thanks to a group at my univeristy in cahoots with Microsoft which allows some students to get various Microsoft products for $12).
Edit: I just changed the Clip to a SourceDataLine (and the few other necessary changes like changing the way the DataLine.Info object was created) and wrote the whole buffer into it, drained the line and then closed it. It works fine. I'll mark the question as answered, however that may not be the "correct" answer (perhaps it does have something to do with Windows 7 and not being completely tested yet). Thanks.
Edited by: Sengin on Sep 21, 2009 8:44 PM
Edited by: Sengin on Sep 21, 2009 8:46 PM