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 -~----------~----~----~----~------~----~------~--~---
