www.pudn.com > p_voice.rar > CST2.H

/* 
** 
** File:        "cst2.h" 
** 
** Description:  This file contains global definition of the SG15 
**    LBC Coder for 6.3/5.3 kbps. 
** 
*/ 
 
/* 
    ITU-T G.723.1 Floating Point Speech Coder ANSI C Source Code.  Version 5.1F 
 
    Original fixed-point code copyright (c) 1995, 
    AudioCodes, DSP Group, France Telecom, Universite de Sherbrooke. 
    All rights reserved. 
 
    Floating-point code copyright (c) 1995, 
    Intel Corporation and France Telecom (CNET). 
    All rights reserved. 
*/ 
 
#define  False 0 
#define  True  1 
 
/* Definition of the working mode */ 
enum  Wmode {Both, Cod, Dec}; 
 
/* Coder rate */ 
enum  Crate    {Rate63, Rate53}; 
 
/* Coder global constants */ 
#define  Frame       240 
#define  LpcFrame    180 
#define  SubFrames   4 
#define  SubFrLen    (Frame/SubFrames) 
 
/* LPC constants */ 
#define  LpcOrder          10 
#define  RidgeFact         10 
#define  CosineTableSize   512 
#define  PreCoef           ((FLOAT) -0.25) 
 
#define  LspPred0          ((FLOAT)12.0/(FLOAT)32.0) 
#define  LspPred1          ((FLOAT)23.0/(FLOAT)32.0) 
 
#define  LspQntBands       3 
#define  LspCbSize         256 
#define  LspCbBits         8 
 
/* LTP constants */ 
#define  PitchMin          18 
#define  PitchMax          (PitchMin+127) 
#define  PwRange           3 
#define  ClPitchOrd        5 
#define  Pstep             1 
#define NbFilt085          85 
#define NbFilt170          170 
 
/* MP-MLQ constants */ 
#define  Sgrid             2 
#define  MaxPulseNum       6 
#define  MlqSteps          2 
 
/* acelp constants */ 
 
#define SubFrLen2          (SubFrLen +4) 
#define DIM_RR             416 
#define NB_POS             8 
#define STEP               8 
#define MSIZE              64 
#define threshold          ((FLOAT) 0.5) 
#define max_time           120 
 
/* Gain constant */ 
#define  NumOfGainLev      24 
 
/* FER constant */ 
#define  ErrMaxNum         3 
 
/* CNG constants  */ 
#define NbAvAcf            3  /* Nb of frames for Acf average               */ 
#define NbAvGain           3  /* Nb of frames for gain average              */ 
#define ThreshGain         3  /* Theshold for quantized gains               */ 
#define FracThreshP1       ((FLOAT) 1.2136) 
#define MaxLev             22 /* Max. gain index                            */ 
#define NbPulsBlk          11 /* Nb of pulses in 2-subframes blocks         */ 
 
#define InvNbPulsBlk       ((FLOAT)1.0/(FLOAT)NbPulsBlk) 
#define NbFilt             50 /* size of LT filters table                   */ 
#define LpcOrderP1         (LpcOrder+1) 
#define SizAcf             ((NbAvAcf+1)*LpcOrderP1) /* size of array Acf    */ 
#define SubFrLenD          (2*SubFrLen) 
#define Gexc_Max           ((FLOAT)5000.0) /* Max gain for fixed excitation */ 
 
/* Taming constants */ 
#define NbFilt085_min       51 
#define NbFilt170_min       93 
#define SizErr              5 
#define Err0                ((FLOAT) 0.00000381464) 
#define ThreshErr           ((FLOAT) 128.0) 
 
#define MAXV                ((FLOAT) 256.0) 
 
/*   Used structures */ 
 
typedef  struct   { 
/* High pass variables */ 
   FLOAT    HpfZdl; 
   FLOAT    HpfPdl; 
/* Lsp previos vector */ 
   FLOAT   PrevLsp[LpcOrder]; 
 
/* All pitch operation buffers */ 
   FLOAT    PrevWgt[PitchMax]; 
   FLOAT    PrevErr[PitchMax]; 
   FLOAT    PrevExc[PitchMax]; 
 
/* Requered memory for the delay */ 
   FLOAT   PrevDat[LpcFrame-SubFrLen]; 
 
/* Used delay lines */ 
   FLOAT    WghtFirDl[LpcOrder]; 
   FLOAT    WghtIirDl[LpcOrder]; 
   FLOAT    RingFirDl[LpcOrder]; 
   FLOAT    RingIirDl[LpcOrder]; 
 
/* For taming procedure */ 
 
   Word16   SinDet; 
   FLOAT    Err[SizErr]; 
 
   } CODSTATDEF; 
 
typedef  struct   { 
   int     Ecount; 
   FLOAT   InterGain; 
   Word16  InterIndx; 
   Word16  Rseed; 
   FLOAT   Park; 
   FLOAT   Gain; 
/* Lsp previous vector */ 
   FLOAT   PrevLsp[LpcOrder]; 
 
/* All pitch operation buffers */ 
   FLOAT   PrevExc[PitchMax]; 
 
/* Used delay lines */ 
   FLOAT   SyntIirDl[LpcOrder]; 
   FLOAT   PostFirDl[LpcOrder]; 
   FLOAT   PostIirDl[LpcOrder]; 
 
   } DECSTATDEF; 
 
/* subframe coded parameters */ 
typedef  struct   { 
   int      AcLg; 
   int      AcGn; 
   int      Mamp; 
   int      Grid; 
   int      Tran; 
   int      Pamp; 
   Word32   Ppos; 
   } SFSDEF; 
 
/* frame coded parameters */ 
typedef  struct   { 
   Word16   Crc; 
   Word32   LspId; 
   int      Olp[SubFrames/2]; 
   SFSDEF   Sfs[SubFrames]; 
   } LINEDEF; 
 
/* harmonic noise shaping filter parameters */ 
typedef  struct   { 
   int   Indx; 
   FLOAT Gain; 
   } PWDEF; 
 
/* pitch postfilter parameters */ 
typedef  struct   { 
   int     Indx; 
   FLOAT   Gain; 
   FLOAT   ScGn; 
   } PFDEF; 
 
/* best excitation vector parameters for the high rate */ 
typedef  struct { 
   FLOAT    MaxErr; 
   int      GridId; 
   int      MampId; 
   int      UseTrn; 
   int      Ploc[MaxPulseNum]; 
   FLOAT    Pamp[MaxPulseNum]; 
   } BESTDEF; 
 
    /* VAD static variables */ 
typedef struct { 
    Word16  Hcnt; 
    Word16  Vcnt; 
    FLOAT   Penr; 
    FLOAT   Nlev; 
    Word16  Aen; 
    Word16  Polp[4]; 
    FLOAT   NLpc[LpcOrder]; 
} VADSTATDEF; 
 
 
/* CNG features */ 
 
/* Coder part */ 
typedef struct { 
    FLOAT   CurGain; 
    Word16  PastFtyp; 
    FLOAT   Acf[SizAcf]; 
    FLOAT   LspSid[LpcOrder]; 
    FLOAT   SidLpc[LpcOrder]; 
    FLOAT   RC[LpcOrderP1]; 
    FLOAT   Ener[NbAvGain]; 
    Word16  NbEner; 
    Word16  IRef; 
    FLOAT   SidGain; 
    Word16  RandSeed; 
} CODCNGDEF; 
 
/* Decoder part */ 
typedef struct { 
    FLOAT   CurGain; 
    Word16  PastFtyp; 
    FLOAT   LspSid[LpcOrder]; 
    FLOAT   SidGain; 
    Word16  RandSeed; 
} DECCNGDEF;