You might want to take a look at SoundPool class and its corresponding implementation in native layer, which could be a good reference if the class itself doesn't satisfy your needs:) http://developer.android.com/reference/android/media/SoundPool.html
On Thu, Jul 16, 2009 at 3:16 PM, sandy8531 <mathur...@gmail.com> wrote: > > My application needs to extract a 10 second portion of a audio file in > PCM format and store it. > > On other platforms I have been doing this in Java using Jlayer > decoder, but once I ported that to Android, it ran extremely slowly. > It takes almost 50 seconds to decode a 10 second sample ! > > Since the opencore libraries are already available, I would like to be > to use them as an alternative. I have been looking at it for a couple > of days now. I would like to understand what options are available to > me to be able to do this. > > My first approach was to develop a JNI stub and try and make a call > out to the codec in the opencore shipped library, but it appears that > those interfaces are subject to change and there is no guaranty of > backward compatibility in a future release. > > The other approach I can think of is to take the opencore source and > compile the codecs into a separate standalone jni library private to > my application, and that way I avoid the backward compatibility > issue. > > Before I go too far down any path I would like to run this by the > experts and figure out what is the best approach. > > One more question - I saw in the opencore code that the decoding > thread is run at a higher priority. Since my decoder would be running > at normal application priority am I going to see a significant > performance drop off ala Jlayer ? > > -thanks, > Sandeep > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "android-framework" group. To post to this group, send email to android-framework@googlegroups.com To unsubscribe from this group, send email to android-framework+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-framework?hl=en -~----------~----~----~----~------~----~------~--~---
