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view libtwamr/graytab.c @ 605:63f774192906

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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 675597e63fd8
children
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/*
********************************************************************************
*
*      GSM AMR-NB speech codec   R98   Version 7.6.0   December 12, 2001
*                                R99   Version 3.3.0                
*                                REL-4 Version 4.1.0                
*
********************************************************************************
*
*      File             : gray.tab
*      Purpose          : gray encoding and decoding tables
*      $Id $
*
*
********************************************************************************
*/

#include "namespace.h"
#include "typedef.h"
#include "graytab.h"

const Word16 gray[8]  = {0, 1, 3, 2, 6, 4, 5, 7};
const Word16 dgray[8] = {0, 1, 3, 2, 5, 6, 4, 7};