JNI accessing shared object library (3GPP AMR codec) in linux

Hi,
We built a shared object (.so) library including the 3GPP AMR codec implementation. (NB: AMR codec is a speech encoder/decoder).
When trying to access this library from a JNI app this gives incorrect results but when trying to use the same library with a simple C program it gives the expected results !
We believe that the JNI environment makes some unexplained modification to the runtime environment that makes this library to not work correctly. Do you know what could explain this strange behaviour ?
Used JSDK: 1.4.2_10
platform: Fedora Core 4 2.6.11-1.1369_FC4
Regards,
Pascal

Hi,
Thank your for your answer!
Well I don't know if I can enter in details here but here is what's happening:
0) we built a shared object library (.so) including the 3GPP AMR codec and some functions calling the codec operations (decode, encode, etc.)
1) in the C++ JNI wrapper we call the function Speech_Decode_Frame() of the 3GPP AMR codec with in input an array of Word16 (= type "short"),
2) when we link the library created in 0) with a small .cpp program, the function Speech_Decode_Frame() returns the speech decoded correctly in a an array of Word16 as well,
3) when we used the same library with a JNI application, the call to Speech_Decode_Frame() returns only a table of zeros --> incorrect result
We're currently tracking down in the source code of the 3GPP AMR where the result array gets these 0.
We'd like to understand what in the JNI runtime environment could make the library to behave differently.
Regards,
Pascal

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technique.
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Travis M
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