David, Thank you very very much for the tips. I've gotten as far as downloading the android source code (onto a clean ubuntu VM I built for the job) and doing an initial make (which generated quite a lot of whining level errors but seemed to complete ok).
I'm so-so at Java but a pretty old hand at C/C++ so hopefully I will be able to work through the remaining steps. Can you recommend any other similar interface classes I could examine for general clues? Once I get all this done, will the .so in the .apk be able to go through the marketplace and run on a real G1 or will I only be able to play with in on the emulator? In any case, I will write progress reports to the list and make the code available to all if I succeed. Best Regards, Dorn Hetzel On Fri, Nov 21, 2008 at 8:23 PM, davidsparks davidsparks <[EMAIL PROTECTED]> wrote: > The native interface is called AudioRecord.h. You'll need to download the > Android source code, write a JNI interface to AudioRecord, build a .so > library that you can include in your APK, write a Java wrapper class for it, > and then load the library from your Java wrapper. > > Hope that helps. > > Dave > > On Wed, Nov 19, 2008 at 11:22 AM, Dorn Hetzel <[EMAIL PROTECTED]> wrote: >> >> David, >> >> It looks like the MediaRecorder functionality is a non-start for my >> application since I need to process the audio as it is coming in, not >> some time later after the recording is complete. Can you provide me >> some clue as to where to find information on the native interface, >> since I would rather be able to at least make some progress with the >> rest of my application while waiting for the next version. Without >> some alternative to MediaRecorder I will be simply unable to proceed. >> >> Thanks! >> >> -Dorn >> >> On Wed, Nov 19, 2008 at 2:14 PM, [EMAIL PROTECTED] >> <[EMAIL PROTECTED]> wrote: >> > >> > It is the only supported method in SDK 1.0. There is a native >> > interface to audio input, but it will be changing in a future release >> > and I strongly advise against using it. >> > >> > On Nov 19, 8:26 am, dorn <[EMAIL PROTECTED]> wrote: >> >> Is the MediaRecorder the only method available to acquire audio from >> >> the microphone, or is there a lower level method available? >> >> >> >> On Nov 14, 4:59 pm, Dave Sparks <[EMAIL PROTECTED]> wrote: >> >> >> >> > The MediaRecorder is currently hardcoded for AMR-NB and is intended >> >> > for MMS messages. >> >> >> >> > You can expect improvements toaudiorecording in a future SDK. >> >> >> >> > On Nov 14, 12:26 pm, ste <[EMAIL PROTECTED]> wrote: >> >> >> >> > > I'm testing out the MediaRecorder'saudiorecording capability, and >> >> > > the quality of theaudiowas less then I was expecting. It was >> >> > > significantly lower then the quality you get while speaking on the >> >> > > phone, and sounded very digitized. >> >> > > I've tested both the 3gpp and MPEG_4 encoding options, and noticed >> >> > > the >> >> > > same quality. >> >> > > Has anyone else noticed this, and is this an issue with the phone's >> >> > > hardware or the MediaRecorder's capabilities? If it's the latter, >> >> > > is >> >> > > the quality of recording something which is planned to be improved? >> > >> > >> > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com 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 -~----------~----~----~----~------~----~------~--~---
