FreeCalypso > hg > gsm-codec-lib
annotate libgsmefr/reorder.c @ 480:332397bc80aa
doc/AMR-library-API: document public const data items
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 19 May 2024 23:18:17 +0000 |
parents | 0faf23a9286f |
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rev | line source |
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libgsmefr: import most *.c files from ETSI source
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1 /************************************************************************* |
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2 * |
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3 * FUNCTION: Reorder_lsf() |
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4 * |
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5 * PURPOSE: To make sure that the LSFs are properly ordered and to keep a |
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6 * certain minimum distance between adjacent LSFs. * |
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7 * The LSFs are in the frequency range 0-0.5 and represented in Q15 |
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8 * |
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9 *************************************************************************/ |
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10 |
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11 #include "gsm_efr.h" |
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12 #include "typedef.h" |
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13 #include "namespace.h" |
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14 #include "basic_op.h" |
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15 #include "no_count.h" |
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16 #include "sig_proc.h" |
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17 |
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18 void Reorder_lsf ( |
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19 Word16 *lsf, /* (i/o) : vector of LSFs (range: 0<=val<=0.5) */ |
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20 Word16 min_dist, /* (i) : minimum required distance */ |
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21 Word16 n /* (i) : LPC order */ |
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22 ) |
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23 { |
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24 Word16 i; |
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25 Word16 lsf_min; |
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26 |
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27 lsf_min = min_dist; move16 (); |
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28 for (i = 0; i < n; i++) |
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29 { |
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30 test (); |
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31 if (lsf[i] < lsf_min) |
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32 { |
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33 lsf[i] = lsf_min; move16 (); |
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34 } |
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35 lsf_min = add (lsf[i], min_dist); |
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36 } |
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37 } |