gsmhr_decoder_twts002_in(): set BFI=1 SID=1 for invalid SID When a received TW-TS-002 RTP payload indicates invalid SID, which of the 3 possible BFI/SID combinations should we pass to our internal ETSI-based speech decoder or TFO engine? Our original code passed BFI=0 SID=1, but upon further reflection, BFI=1 SID=1 is a better choice. In the corner case where received invalid SID is fed to a full decoder in homed state, setting BFI=1 allows that decoder to emit zeros on PCM and stay homed, instead of launching into full decoding.

/*
 * This C module is our current best attempt at determining the local endian
 * in a portable manner that (hopefully) won't come back to bite us when
 * someone needs to compile our software under a different flavor of Unix.
 */

#include <stdint.h>
#include <arpa/inet.h>
#include "local_endian.h"

int is_native_big_endian(void)
{
	uint16_t big_end_one;

	big_end_one = htons(1);
	if (big_end_one == 1)
		return 1;
	else
		return 0;
}