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.

/*
 * In this module we implement allocation and initialization
 * of state structures for our GSM EFR decoder.
 */

#include <stdlib.h>
#include "gsm_efr.h"
#include "typedef.h"
#include "cnst.h"
#include "dec_state.h"

const unsigned EFR_decoder_state_size = sizeof(struct EFR_decoder_state);

struct EFR_decoder_state *EFR_decoder_create(void)
{
	struct EFR_decoder_state *st;

	st = malloc(sizeof(struct EFR_decoder_state));
	if (st)
		EFR_decoder_reset(st);
	return st;
}