Converting Pcm-16 To Amr Using Amrinputstream

I'm doing a conversion from PCM-16 to AMR using AmrInputStream. The details for the AmrInputStream can be found here http://hi-android.info/src/android/media/AmrInputStream.java.ht

Solution 1:

SAMPLES_PER_FRAME is the block of data the amrencoder acts on in one go(which is mapped to 20 msec of audio).

from the signatures of the amr encoder functions (at the bottom of http://hi-android.info/src/android/media/AmrInputStream.java.html)

privatestaticnativeintGsmAmrEncoderNew();

privatestaticnativevoidGsmAmrEncoderInitialize(int gae);

privatestaticnativeintGsmAmrEncoderEncode(int gae,
        byte[] pcm, int pcmOffset, byte[] amr, int amrOffset)throws IOException;

privatestaticnativevoidGsmAmrEncoderCleanup(int gae);

privatestaticnativevoidGsmAmrEncoderDelete(int gae);

There doesnt seem to be a way to pass samplerate to the encoder.(gae is native handle) the sample rate is hardcoded to 8k atleast with this api