j2c_pointer
if (j2c_pointer(env, jstate, (caddr_t *)&state))
if (j2c_pointer(env, jsource, (caddr_t *)&source))
if (j2c_pointer(env, jstate, (caddr_t *)&state))
if (j2c_pointer(env, jstate, (caddr_t *)&state))
if (j2c_pointer(env, jstate, (caddr_t *)&state))
int j2c_pointer(JNIEnv *env, jbyteArray jpointer, caddr_t *cpointer);