FreeCalypso > hg > gsm-codec-lib
view libtwamr/reorder.c @ 407:5a1d18542f8a
libtwamr: integrate dtx_dec.c and dtx_enc.c
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 07 May 2024 00:05:12 +0000 |
parents | 05a46720af0f |
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 : reorder.c * Purpose : To make sure that the LSFs are properly ordered * : and to keep a certain minimum distance between * : adjacent LSFs. * ******************************************************************************** */ /* ******************************************************************************** * MODULE INCLUDE FILE AND VERSION ID ******************************************************************************** */ #include "namespace.h" #include "reorder.h" /* ******************************************************************************** * INCLUDE FILES ******************************************************************************** */ #include "typedef.h" #include "basic_op.h" #include "no_count.h" /* ******************************************************************************** * LOCAL VARIABLES AND TABLES ******************************************************************************** */ /* ******************************************************************************** * PUBLIC PROGRAM CODE ******************************************************************************** */ /************************************************************************* * * FUNCTION: Reorder_lsf() * * PURPOSE: To make sure that the LSFs are properly ordered and to keep a * certain minimum distance between adjacent LSFs. * * The LSFs are in the frequency range 0-0.5 and represented in Q15 * *************************************************************************/ void Reorder_lsf ( Word16 *lsf, /* (i/o) : vector of LSFs (range: 0<=val<=0.5) */ Word16 min_dist, /* (i) : minimum required distance */ Word16 n /* (i) : LPC order */ ) { Word16 i; Word16 lsf_min; lsf_min = min_dist; move16 (); for (i = 0; i < n; i++) { test (); if (sub (lsf[i], lsf_min) < 0) { lsf[i] = lsf_min; move16 (); } lsf_min = add (lsf[i], min_dist); } }