Leaked source code of windows server 2003
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/*
**** File: "cst_lbc.h"**** Description: This file contains global definition of the SG15** LBC Coder for 6.3/5.3 kbps.***/
/*
ITU-T G.723 Floating Point Speech Coder ANSI C Source Code. Version 3.01
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.*/
/*
This file contains global definition of the SG15 LBR Coder for 6.4/5.3 kbps.*/#include "typedef.h"
#define False 0
#define True 1
//#if NOTMINI
#define FALSE 0
#define TRUE 1
//#endif
/* Definition of the working mode */enum Wmode { Both, Cod, Dec } ;
/* Coder rate *///enum Crate { Silent, Rate53, Rate63, Lost } ;
/* Changed in V4.1 */enum Crate { Rate63, Rate53, Silent, Lost } ;
/* Coder global constants */#define Frame 240
#define LpcFrame 180
#define SubFrames 4
#define SubFrLen (Frame/SubFrames)
#define LpcOrder 10
#define RidgeFact 10
#define CosineTableSize 512
#define PreCoef -0.25f
#define LspPrd0 12288
#define LspPrd1 23552
#define LspPred0 (12.0f/32.0f)
#define LspPred1 (23.0f/32.0f)
#define LspQntBands 3
#define LspCbSize 256
#define LspCbBits 8
#define PitchMin 18
#define PitchMax (PitchMin+127)
#define PwRange 3
#define ClPitchOrd 5
#define Pstep 1
#define NbFilt085 85
#define NbFilt170 170
#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 0.5f
#define max_time 120
#define NumOfGainLev 24
#define ErrMaxNum 3
/* Taming constants */#define NbFilt085_min 51
#define NbFilt170_min 93
#define SizErr 5
#define Err0 0.00000381464f
#define ThreshErr 128.0f
#define SRCSTATELEN 16 // sample rate conversion state length
#ifdef LOG_ENCODE_TIMINGS_ON // { LOG_ENCODE_TIMINGS_ON
/* Encoder Timing Data - per frame
*/typedef struct { unsigned long dwEncode;#ifdef DETAILED_ENCODE_TIMINGS_ON // { DETAILED_ENCODE_TIMINGS_ON
unsigned long dwRem_Dc; unsigned long dwComp_Lpc; unsigned long dwAtoLsp; unsigned long dwLsp_Qnt; unsigned long dwLsp_Inq; unsigned long dwLsp_Int; unsigned long dwMem_Shift; unsigned long dwWght_Lpc; unsigned long dwError_Wght; unsigned long dwFew_Lps_In_Coder; unsigned long dwFilt_Pw; unsigned long dwComp_Ir; unsigned long dwSub_Ring; unsigned long dwFind_Acbk; unsigned long dwFind_Fcbk; unsigned long dwDecode_Acbk; unsigned long dwReconstr_Excit; unsigned long dwUpd_Ring; unsigned long dwLine_Pack;#endif // } DETAILED_ENCODE_TIMINGS_ON
} ENC_TIMING_INFO;// 2057 frames will allow us to store stats
// for all of our Geo08kHz16BitMonoPCM.wav
// test file...
#define ENC_TIMING_INFO_FRAME_COUNT 2057
#endif // } LOG_ENCODE_TIMINGS_ON
#ifdef LOG_DECODE_TIMINGS_ON // { LOG_DECODE_TIMINGS_ON
/* Encoder Timing Data - per frame
*/typedef struct { unsigned long dwDecode;#ifdef DETAILED_DECODE_TIMINGS_ON // { DETAILED_DECODE_TIMINGS_ON
unsigned long dwLine_Unpk; unsigned long dwLsp_Inq; unsigned long dwLsp_Int; unsigned long dwVariousD; unsigned long dwFcbk_UnpkD; unsigned long dwDecod_AcbkD; unsigned long dwComp_Info; unsigned long dwRegen; unsigned long dwSynt;#endif // } DETAILED_DECODE_TIMINGS_ON
} DEC_TIMING_INFO;// 2057 frames will allow us to store stats
// for all of our Geo08kHz16BitMonoPCM.wav
// test file...
#define DEC_TIMING_INFO_FRAME_COUNT 2057
#endif // } LOG_DECODE_TIMINGS_ON
/*
Used structures*/typedef struct {
float HpfZdl; float HpfPdl; /* Lsp previous 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[2*LpcOrder]; float WghtIirDl[2*LpcOrder]; float RingFirDl[2*LpcOrder]; float RingIirDl[2*LpcOrder];
/* For taming procedure */
int SinDet; float Err[SizErr];
//These entries are not part of the ITU 723 std.
int p; int q;
int srccount; // sampling rate conversion count
short srcstate[SRCSTATELEN]; // sampling rate conversion state
// Lsp previous vector
/* All pitch operation buffers */ int VadAct; Flag UseHp; enum Crate WrkRate; int quality;
#ifdef LOG_ENCODE_TIMINGS_ON // { LOG_ENCODE_TIMINGS_ON
ENC_TIMING_INFO EncTimingInfo[ENC_TIMING_INFO_FRAME_COUNT]; unsigned long dwStatFrameCount; int bTimingThisFrame; unsigned long dwStartLow; unsigned long dwStartHigh;#endif // } LOG_ENCODE_TIMINGS_ON
} CODDEF ;
typedef struct { int Ecount; float InterGain; int InterIndx; int Rseed; // Lsp previous vector
// Name changed to avoid confusion with encoder
// previous LSPs
//float PrevLSP[LpcOrder];
float dPrevLsp[LpcOrder];
/* All pitch operation buffers */ // Name changed to avoid confusion with encoder
// previous excitation
//float PrevExc[PitchMax];
float dPrevExc[PitchMax] ;
/* Used delay lines */ float SyntIirDl[2*LpcOrder] ;
//These entries are not part of the ITU 723 std.
int dp; int dq;
int srccount; // sampling rate conversion count
short srcstate[SRCSTATELEN]; // sampling rate conversion state
short srcbuff[480]; // sampling rate conversion buffer
int i;
int VadAct; Flag UsePf; enum Crate WrkRate;
#ifdef LOG_DECODE_TIMINGS_ON // { LOG_DECODE_TIMINGS_ON
DEC_TIMING_INFO DecTimingInfo[DEC_TIMING_INFO_FRAME_COUNT]; unsigned long dwStatFrameCount; int bTimingThisFrame; unsigned long dwStartLow; unsigned long dwStartHigh;#endif // } LOG_DECODE_TIMINGS_ON
} DECDEF ;
typedef struct { int AcLg; int AcGn; int Mamp; int Grid; int Tran; int Pamp; Word32 Ppos; } SFSDEF;
typedef struct { int Crc ; Word32 LspId ; int Olp[SubFrames/2] ; SFSDEF Sfs[SubFrames] ; } LINEDEF ;
typedef struct { int Indx; float Gain; } PWDEF;
typedef struct { float MaxErr ; int GridId ; int MampId ; int UseTrn ; int Ploc[MaxPulseNum] ; float Pamp[MaxPulseNum] ; } BESTDEF ;
/* Prototype used for the ACELP codebook */
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