FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/ex_ctrl.h @ 514:67b13a6a63c9

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libgsmhr1: implement validation for *.dec frames
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 25 Aug 2024 19:14:40 +0000
parents 3f27ca24c620
children
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3f27ca24c620 libtwamr: integrate ex_ctrl.c
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1 /*
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2 ********************************************************************************
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3 *
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4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
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5 * R99 Version 3.3.0
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6 * REL-4 Version 4.1.0
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7 *
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8 ********************************************************************************
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9 *
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10 * File : ex_ctrl.h
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11 * Purpose : Excitation Control module in background noise
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12 *
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13 ********************************************************************************
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14 */
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15 #ifndef ex_ctrl_h
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16 #define ex_ctrl_h "$Id $"
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17
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18 /*
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19 ********************************************************************************
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20 * INCLUDE FILES
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21 ********************************************************************************
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22 */
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23 #include "typedef.h"
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24 #include "cnst.h"
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25
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26 /*
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27 ********************************************************************************
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28 * LOCAL VARIABLES AND TABLES
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29 ********************************************************************************
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30 */
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31 #define L_ENERGYHIST 60
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32
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33 /*
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34 ********************************************************************************
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35 * DEFINITION OF DATA TYPES
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36 ********************************************************************************
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37 */
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38
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39 /*
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40 ********************************************************************************
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41 * DECLARATION OF PROTOTYPES
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42 ********************************************************************************
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43 */
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44
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45 /*
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46 **************************************************************************
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47 *
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48 * Function : Ex_ctrl
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49 * Purpose : Charaterice synthesis speech and detect background noise
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50 * Returns : background noise decision; 0 = bgn, 1 = no bgn
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51 *
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52 **************************************************************************
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53 */
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54 Word16 Ex_ctrl (Word16 excitation[], /*i/o: Current subframe excitation */
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55 Word16 excEnergy, /* i : Exc. Energy, sqrt(totEx*totEx)*/
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56 Word16 exEnergyHist[], /* i : History of subframe energies */
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57 Word16 voicedHangover, /* i : # of fr. after last voiced fr.*/
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58 Word16 prevBFI, /* i : Set i previous BFI */
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59 Word16 carefulFlag /* i : Restrict dymamic in scaling */
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60 );
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61
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62 #endif