FreeCalypso > hg > gsm-codec-lib

annotate libgsmhr1/enc_state.c @ 622:3ae5508f9a54 default tip

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libgsmhr1/sp_sfrm.c: constify "ROM" static data
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 05 Mar 2026 21:56:18 +0000
parents d18efcba03bc
children
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d18efcba03bc libgsmhr1: capture speech encoder state
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1 /*
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2 * Here we implement gsmhr_encoder_create() and gsmhr_encoder_reset()
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3 * functions: allocation and initialization of speech encoder state.
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4 */
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5
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6 #include <stdint.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9 #include "tw_gsmhr.h"
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10 #include "typedefs.h"
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11 #include "namespace.h"
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12 #include "enc_state.h"
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13
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14 struct gsmhr_encoder_state *gsmhr_encoder_create(int dtx)
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15 {
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16 struct gsmhr_encoder_state *st;
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17
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18 st = malloc(sizeof(struct gsmhr_encoder_state));
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19 if (st)
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20 gsmhr_encoder_reset(st, dtx);
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21 return st;
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22 }
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23
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24 static void vad_init_nonzero(struct vad_state *vst)
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25 {
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26 vst->pswRvad[0] = 24576;
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27 vst->swNormRvad = 7;
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28 vst->swE_thvad = 21;
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29 vst->swM_thvad = 21875;
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30 vst->swHangCount = -1;
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31 vst->swOldLag = 21;
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32 }
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33
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34 void gsmhr_encoder_reset(struct gsmhr_encoder_state *st, int dtx)
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35 {
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36 int i;
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37
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38 memset(st, 0, sizeof(struct gsmhr_encoder_state));
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39 st->dtx_mode = dtx;
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40 vad_init_nonzero(&st->vad);
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41 st->swPtch = 1;
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42 st->swNElapsed = 50;
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43 }