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annotate libgsmhr1/enc_state.h @ 638:bce323eaeb3a

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INSTALL: add libgsmhr1
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 20 Mar 2026 04:55:48 +0000
parents ff5857556c44
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_encoder_state, the state structure for our speech
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4 * encoder engine.
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5 */
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6
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7 #ifndef enc_state_h
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8 #define enc_state_h
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9
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10 #include "typedefs.h"
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11
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12 #define CG_INT_MACS 6 /* Number of Multiply-Accumulates in */
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13 /* one interpolation */
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14 #define LMAX 142 /* largest lag (integer sense) */
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15 #define LSMAX (LMAX + CG_INT_MACS/2) /* Lag Search Array Length */
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16 #define LPCSTARTINDEX 25 /* Where the LPC analysis window
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17 * starts */
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18 #define INBUFFSZ LPCSTARTINDEX + A_LEN /* Input buffer size */
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19
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20 #define HNW_BUFF_LEN LSMAX
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21 #define LTP_LEN 147 /* 147==0x93 length of LTP history */
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22
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23 struct gsmhr_encoder_state {
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24 int dtx_mode;
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25 /* state variables from sp_enc.c */
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26 Shortword swOldR0;
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27 Shortword swOldR0Index;
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28 struct NormSw psnsWSfrmEngSpace[2 * N_SUB];
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29 Shortword pswHPFXState[4];
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30 Shortword pswHPFYState[8];
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31 Shortword pswOldFrmKs[NP];
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32 Shortword pswOldFrmAs[NP];
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33 Shortword pswOldFrmSNWCoefs[NP];
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34 Shortword pswWgtSpeechSpace[F_LEN + LMAX + CG_INT_MACS / 2];
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35 Shortword pswSpeech[INBUFFSZ]; /* input speech */
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36 Shortword swPtch;
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37 /* DTX state variables from sp_enc.c */
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38 Shortword swTxGsHistPtr;
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39 Shortword pswCNVSCode1[N_SUB];
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40 Shortword pswCNVSCode2[N_SUB];
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41 Shortword pswCNGsp0Code[N_SUB];
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42 Shortword pswCNLpc[3];
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43 Shortword swCNR0;
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44 /* DTX state variables from dtx.c */
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45 Shortword swVadFrmCnt;
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46 short int siUpdPointer;
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47 Shortword swNElapsed;
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48 Longword pL_GsHist[N_SUB * (OVERHANG - 1)];
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49 /* previously static vars inside swComfortNoise() */
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50 struct cn_state {
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51 /* history of unquantized parameters */
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52 Longword pL_R0Hist[OVERHANG];
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53 Longword ppL_CorrHist[OVERHANG][NP + 1];
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54 /* quantized reference parameters */
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55 Shortword swQntRefR0;
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56 Shortword swRefGsIndex;
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57 int piRefVqCodewds[3];
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58 /* handling of short speech bursts */
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59 Shortword swShortBurst;
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60 /* state value of random generator */
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61 Longword L_TxPNSeed;
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62 } cn_state;
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63 /* state variables from sp_frm.c */
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64 Shortword pswAnalysisState[NP];
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65 Shortword pswWStateNum[NP];
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66 Shortword pswWStateDenom[NP];
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67 const Shortword *psrTable;
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68 int iLimit;
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69 int iLow;
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70 int iThree;
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71 int iWordHalfPtr;
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72 int iWordPtr;
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73 /* state variables from sp_sfrm.c */
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74 Shortword pswLtpStateBase[LTP_LEN + S_LEN];
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75 Shortword pswHState[NP];
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76 Shortword pswHNWState[HNW_BUFF_LEN];
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77 /* from vad.c */
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78 struct vad_state {
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79 Shortword pswRvad[9];
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80 Shortword swNormRvad;
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81 Shortword swPt_sacf;
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82 Shortword swPt_sav0;
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83 Shortword swE_thvad;
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84 Shortword swM_thvad;
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85 Shortword swAdaptCount;
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86 Shortword swBurstCount;
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87 Shortword swHangCount;
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88 Shortword swOldLagCount;
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89 Shortword swVeryOldLagCount;
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90 Shortword swOldLag;
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91 Longword pL_sacf[27];
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92 Longword pL_sav0[36];
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93 Longword L_lastdm;
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94 } vad;
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95 };
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96
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97 #endif