view libgsmefr/dtx_defs.h @ 119:c1d53064b410

libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 10 Dec 2022 02:25:20 +0000
parents libgsmefr/dtx.c@58b64224d4ac
children
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/*
 * The definitions contained in this header file originally lived in
 * dtx.c; they are being factored out into a new header file as part of
 * splitting of dtx.c code into common, encoder-only and decoder-only
 * parts.
 */

/* Inverse values of DTX hangover period and DTX hangover period + 1 */

#define INV_DTX_HANGOVER (0x7fff / DTX_HANGOVER)
#define INV_DTX_HANGOVER_P1 (0x7fff / (DTX_HANGOVER+1))

#define NB_PULSE 10 /* Number of pulses in fixed codebook excitation */

/* Constant DTX_ELAPSED_THRESHOLD is used as threshold for allowing
   SID frame updating without hangover period in case when elapsed
   time measured from previous SID update is below 24 */

#define DTX_ELAPSED_THRESHOLD (24 + DTX_HANGOVER - 1)