bv32externs.h

/*****************************************************************************/
/* BroadVoice(R)32 (BV32) Floating-Point ANSI-C Source Code */
/* Revision Date: October 5, 2012 */
/* Version 1.2 */
/*****************************************************************************/

/*****************************************************************************/
/* Copyright 2000-2012 Broadcom Corporation */
/* */
/* This software is provided under the GNU Lesser General Public License, */
/* version 2.1, as published by the Free Software Foundation ("LGPL"). */
/* This program is distributed in the hope that it will be useful, but */
/* WITHOUT ANY SUPPORT OR WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the LGPL for */
/* more details. A copy of the LGPL is available at */
/* http://www.broadcom.com/licenses/LGPLv2.1.php, */
/* or by writing to the Free Software Foundation, Inc., */
/* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*****************************************************************************/


/*****************************************************************************
 bv32externs.h : BV32 Floating-Point externs

 $Log$
******************************************************************************/

/* POINTERS */
extern Float winl[];
extern Float sstwin[];
extern int idxord[];
extern Float hpfa[];
extern Float hpfb[];
extern Float adf[];
extern Float bdf[];
extern Float x[];
extern Float x2[];
extern Float invk[];
extern Float MPTH[];


/* LSP Quantization */
extern Float lspecb1[LSPECBSZ1*LPCO];
extern Float lspecb21[LSPECBSZ21*SVD1];
extern Float lspecb22[LSPECBSZ22*SVD2];
extern Float lspmean[LPCO];
extern Float lspp[LSPPORDER*LPCO];

/* Pitch Predictor Codebook */
extern Float pp9cb[];

/* Log-Gain Quantization */
extern Float lgpecb[LGPECBSZ];
extern Float lgp[LGPORDER];
extern Float lgmean;

/* Log-Gain Limitation */
extern Float lgclimit[];

/* Excitation Codebook */
extern Float cccb[CBSZ*VDIM];

extern Float lgpecb_nh[];
extern Float a_pre[];
extern Float b_pre[];

/* Function Prototypes */

extern Float estlevel(
Float lg,
Float *level,
Float *lmax,
Float *lmin,
Float *lmean,
Float *x1);

extern void excdec_w_LT_synth(
 Float *ltsymd, /* long-term synthesis filter memory at decoder*/
 short *idx, /* excitation codebook index array for current subframe */
 Float *gainq, /* quantized linear gains for sub-subframes */
 Float *b, /* coefficient of 3-tap pitch predictor */
 short pp, /* pitch period (# of 8 kHz samples) */
 Float *EE);

extern Float gaindec(
 Float *lgq,
 short gidx,
 Float *lgpm,
 Float *prevlg,
 Float level,
 short *nclglim,
 short lctimer);

void gainplc(Float E,
 Float *lgeqm,
 Float *lgqm);

extern void lspdec(
 Float *lspq,
 short *lspidx,
 Float *lsppm,
 Float *lspq_last);

extern void lspplc(
 Float *lspq,
 Float *lsppm);

extern int coarsepitch(
Float *xw,
Float *xwd,
Float *dfm,
int cpplast);


extern int refinepitch(
Float *x,
int cpp,
Float *ppt);

extern int pitchtapquan(
Float *x,
int pp,
Float *b);

extern void excquan(
 Float *qv, /* output quantized excitation signal vector */
 short *idx, /* quantizer codebook index for uq[] vector */
 Float *d, /* input prediction residual signal vector */
 Float *h, /* noise feedback filter coefficient array */
 Float *b, /* coefficient of 3-tap pitch predictor */
 Float beta, /* coefficient of weighted 3-tap pitch predictor */
 Float *ltsym, /* long-term synthesis filter memory */
 Float *ltnfm, /* long-term noise feedback filter memory */
 Float *stnfm, /* short-term noise feedback filter memory */
 Float *cb, /* scalar quantizer codebook */
 int pp); /* pitch period (# of 8 kHz samples) */

extern int gainquan(
 Float *gainq,
 Float lg,
 Float *lgpm,
 Float *prevlg,
 Float level);

extern void lspquan(
 Float *lspq,
 short *lspidx,
 Float *lsp,
 Float *lsppm);