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annotate libtwamr/bits2prm.c @ 282:9ee8ad3d4d30

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frtest: rm gsmfr-hand-test and gsmfr-max-out utils These hack programs were never properly documented and were written only as part of a debug chase, in pursuit of a bug that ultimately turned out to be in our then-hacky patch to osmo-bts-sysmo, before beginning of proper patches in Osmocom. These hack programs need to be dropped from the present sw package because they depend on old libgsm, and we are eliminating that dependency.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 05:44:47 +0000
parents f931e704adc5
children
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f931e704adc5 libtwamr: bits and parameter packing
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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 }