This is why I've moved any new projects that generate audio in the NDK to create the audio data and pass the buffers back to me. I've seen an increase in speed in buffer creation (44Khz stereo sound) from 400ms down to 10ms or so to mix a buffer, over 100x speed increase.
It's best to put any audio processing in the NDK to get max speed possible. -niko On Apr 15, 3:35 am, Jesper Hansen <[email protected]> wrote: > On my N1, my player spends around 15-30% of its time generating the audio > data. The my player app has focus everything sounds fine, but when I start > another app that also requires a lot of cpu time the sounds start to stutter > badly. > > Using top and ps on the N1, I can see that the applications that causes my > sounds to stutter, have a nice value of 0 (THREAD_PRIORITY_DEFAULT). > It puzzles me why these applications get more attention from the > scheduler,than my thread, which runs at nice level -16 > (THREAD_PRIORITY_AUDIO). > > > > On Thu, Apr 15, 2010 at 04:01, ani <[email protected]> wrote: > > So what you are trying to say is in-between(time it takes to play the > > audio) the audio writes you are doing some > > cpu intensive operations which is causing this stuttering ??? > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected]<android-developers%2Bunsubs > > [email protected]> > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > > To unsubscribe, reply using "remove me" as the subject. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
