frameSize using public API

size_t JAudioTrack::frameSize() {

    JNIEnv *env = JavaVMHelper::getJNIEnv();

    // TODO: Calculated here implementing the logic in AudioTrack.java

    // wait for AudioTrack.java exposing this parameter (i.e. getFrameSizeInBtytes())

    jmethodID jGetAudioFormat = env->GetMethodID(mAudioTrackCls, "getAudioFormat", "()I");

    int javaFormat = env->CallIntMethod(mAudioTrackObj, jGetAudioFormat);

    jmethodID jGetFormat = env->GetMethodID(mAudioTrackCls,

            "getFormat", "()Landroid/media/AudioFormat;");

    jobject jAudioFormatObj = env->CallObjectMethod(mAudioTrackObj, jGetFormat);

    jclass jAudioFormatCls = env->FindClass("android/media/AudioFormat");

    jmethodID jIsEncodingLinearFrames = env->GetStaticMethodID(

            jAudioFormatCls, "isEncodingLinearFrames", "(I)Z");

    jboolean javaIsEncodingLinearFrames = env->CallStaticBooleanMethod(

            jAudioFormatCls, jIsEncodingLinearFrames, javaFormat);

    if (javaIsEncodingLinearFrames == false) {

        return 1;

    }

    jmethodID jGetBytesPerSample = env->GetStaticMethodID(jAudioFormatCls,

            "getBytesPerSample", "(I)I");

    int javaBytesPerSample = env->CallStaticIntMethod(jAudioFormatCls,

            jGetBytesPerSample, javaFormat);

    jmethodID jGetChannelCount = env->GetMethodID(mAudioTrackCls, "getChannelCount", "()I");

    int javaChannelCount = env->CallIntMethod(mAudioTrackObj, jGetChannelCount);

    jmethodID jGetFrameSizeInBytes = env->GetMethodID(

            jAudioFormatCls, "getFrameSizeInBytes", "()I");

    jint javaFrameSizeInBytes = env->CallIntMethod(jAudioFormatObj, jGetFrameSizeInBytes);

    return javaChannelCount * javaBytesPerSample;

    return (size_t)javaFrameSizeInBytes;

}

status_t JAudioTrack::dump(int fd, const Vector<String16>& args __unused) const