FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/bits2prm.c @ 542:f2d0f2f15d5f

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libgsmefr: add wrapper for TW-TS-001 RTP input
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 28 Sep 2024 06:38:08 +0000
parents f931e704adc5
children
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f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * A cleaner reimplementation of AMR Bits2prm() function.
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3 */
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4
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5 #include "typedef.h"
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6 #include "namespace.h"
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7 #include "bitno.h"
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8 #include "bits2prm.h"
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9
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10 void Bits2prm(enum Mode mode, const Word16 bits[], Word16 prm[])
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11 {
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12 const Word16 *p = bits;
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13 const Word16 *t = bitno[mode];
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14 unsigned nparam = prmno[mode];
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15 unsigned n, m, acc;
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16
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17 for (n = 0; n < nparam; n++) {
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18 acc = 0;
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19 for (m = 0; m < *t; m++) {
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20 acc <<= 1;
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21 if (*p)
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22 acc |= 1;
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23 p++;
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24 }
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25 prm[n] = acc;
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26 t++;
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27 }
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28 }