view libtwamr/prmno.c @ 605:63f774192906

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.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 04 Dec 2025 21:01:46 +0000
parents f931e704adc5
children
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/*
 * This module holds prmno[] and prmnofs[] tables that were
 * originally in bitno.tab in 3GPP reference source.
 */

#include "typedef.h"
#include "namespace.h"
#include "int_defs.h"

/* number of parameters per modes (values must be <= MAX_PRM_SIZE!) */
const Word16 prmno[9] = {
  PRMNO_MR475,
  PRMNO_MR515,
  PRMNO_MR59,
  PRMNO_MR67,
  PRMNO_MR74,
  PRMNO_MR795,
  PRMNO_MR102,
  PRMNO_MR122,
  PRMNO_MRDTX
};

/* number of parameters to first subframe per modes */
const Word16 prmnofsf[8] = {
  PRMNOFSF_MR475,
  PRMNOFSF_MR515,
  PRMNOFSF_MR59,
  PRMNOFSF_MR67,
  PRMNOFSF_MR74,
  PRMNOFSF_MR795,
  PRMNOFSF_MR102,
  PRMNOFSF_MR122
};