FreeCalypso > hg > gsm-codec-lib
view libgsmefr/reorder.c @ 261:cfcb3ce9c778
libgsmfr2: implement gsmfr_unpack_to_array()
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 12 Apr 2024 23:29:18 +0000 |
parents | 0faf23a9286f |
children |
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/************************************************************************* * * 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 * *************************************************************************/ #include "gsm_efr.h" #include "typedef.h" #include "namespace.h" #include "basic_op.h" #include "no_count.h" #include "sig_proc.h" 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 (lsf[i] < lsf_min) { lsf[i] = lsf_min; move16 (); } lsf_min = add (lsf[i], min_dist); } }