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annotate libgsmhr1/dec_state.h @ 601:c7c03231002d

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libgsmhr1: integrate main body of speech decoder
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 04 Dec 2025 12:49:19 +0000
parents 5809165fb140
children
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1 /*
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2 * This library-internal header file provides definition for
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3 * struct gsmhr_decoder_state, the state structure for our speech
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4 * decoder engine - the full endpoint version, as opposed to TFO
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5 * transform.
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6 */
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7
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8 #ifndef dec_state_h
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9 #define dec_state_h
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11 #include "typedefs.h"
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12 #include "rxfe.h"
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13
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14 #define LTP_LEN 147 /* 147==0x93 length of LTP history */
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15
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16 struct gsmhr_decoder_state {
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17 struct gsmhr_rxfe_state rxfe;
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18 int is_homed;
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19 /* state variables from err_conc.c */
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20 Longword plSubfrEnergyMem[4];
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21 Shortword swLevelMem[4];
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22 /* state variables from sp_dec.c */
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23 Shortword gswPostFiltAgcGain;
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24 Shortword gpswPostFiltStateNum[NP];
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25 Shortword gpswPostFiltStateDenom[NP];
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26 Shortword swPostEmphasisState;
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27 Shortword pswSynthFiltState[NP];
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28 Shortword pswOldFrmKsDec[NP];
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29 Shortword pswOldFrmAsDec[NP];
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30 Shortword pswOldFrmPFNum[NP];
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31 Shortword pswOldFrmPFDenom[NP];
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32 Shortword swOldR0Dec;
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33 Shortword pswLtpStateBaseDec[LTP_LEN + S_LEN];
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34 Shortword pswPPreState[LTP_LEN + S_LEN];
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35 Shortword swMuteFlagOld;
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36 /* comfort noise interpolation */
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37 Shortword swRxDTXState;
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38 Shortword swR0OldCN;
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39 Longword pL_OldCorrSeq[NP + 1];
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40 Longword pL_NewCorrSeq[NP + 1];
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41 Longword pL_CorrSeq[NP + 1];
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42 };
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43
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44 #endif