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freeswitch/libs/broadvoice/src/broadvoice/private/broadvoice.h

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/*
* broadvoice - a library for the BroadVoice 16 and 32 codecs
*
* broadvoice.h - The head guy amongst the headers
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2009 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* $Id: broadvoice.h,v 1.1.1.1 2009/11/19 12:10:48 steveu Exp $
*/
/*! \file */
#if !defined(_BROADVOICE_PRIVATE_BROADVOICE_H_)
#define _BROADVOICE_PRIVATE_BROADVOICE_H_
typedef double Float;
#define LPCO 8 /* LPC Order */
#define HPO 2 /* Front end 150Hz high-pass filter order */
#define DFO 4
#define BV16_FRSZ 40 /* Frame size */
#define BV16_MAXPP 137 /* MAXimum Pitch Period */
#define BV16_PWSZ 120 /* Pitch analysis Window SiZe */
#define BV16_XQOFF (BV16_MAXPP + 1) /* xq() offset before current subframe */
#define BV16_XOFF (BV16_MAXPP + 1) /* Offset for x() frame */
#define BV16_LTMOFF (BV16_MAXPP + 1) /* Long-Term filter Memory OFFset */
#define BV16_LSPPORDER 8 /* LSP MA Predictor ORDER */
#define BV16_NSTORDER 8 /* Pole-zero NFC shaping filter */
#define BV16_LGPORDER 8 /* Log-Gain Predictor OODER */
#define BV16_DECF 4 /* DECimation Factor for coarse pitch period search */
#define BV16_XDOFF (BV16_LXD - BV16_FRSZD)
#define BV16_FRSZD (BV16_FRSZ/BV16_DECF) /* FRame SiZe in DECF:1 lowband domain */
#define BV16_PWSZD (BV16_PWSZ/BV16_DECF) /* Pitch ana. Window SiZe in DECF:1 domain */
#define BV16_MAXPPD (BV16_MAXPP/BV16_DECF) /* MAX Pitch in DECF:1, if MAXPP!=4n, ceil() */
#define BV16_LXD (BV16_MAXPPD + 1 + BV16_PWSZD)
#define BV32_FRSZ 80 /* Frame size */
#define BV32_MAXPP 265 /* MAXimum Pitch Period */
#define BV32_PWSZ 240 /* Pitch analysis Window SiZe for 8kHz lowband */
#define BV32_XOFF (BV32_MAXPP + 1) /* offset for x() frame */
#define BV32_LTMOFF (BV32_MAXPP + 1) /* Long-Term filter Memory OFFset */
#define BV32_LSPPORDER 8 /* LSP MA Predictor ORDER */
#define BV32_PFO 1 /* Preemphasis filter order */
#define BV32_LGPORDER 16 /* Log-Gain Predictor OODER */
#define BV32_DECF 8 /* DECimation Factor for coarse pitch period search */
#define BV32_XDOFF (BV32_LXD - BV32_FRSZD)
#define BV32_FRSZD (BV32_FRSZ/BV32_DECF) /* FRame SiZe in DECF:1 lowband domain */
#define BV32_PWSZD (BV32_PWSZ/BV32_DECF) /* Pitch ana. Window SiZe in DECF:1 domain */
#define BV32_MAXPPD (BV32_MAXPP/BV32_DECF) /* MAX Pitch in DECF:1, if MAXPP!=4n, ceil() */
#define BV32_LXD (BV32_MAXPPD + 1 + BV32_PWSZD)
struct bv16_decode_state_s
{
Float stsym[LPCO];
Float ltsym[BV16_LTMOFF];
Float lsppm[LPCO*BV16_LSPPORDER];
Float lgpm[BV16_LGPORDER];
Float lsplast[LPCO];
Float prevlg[2];
Float lmax; /* level-adaptation */
Float lmin;
Float lmean;
Float x1;
Float level;
int16_t pp_last;
int16_t ngfae;
Float bq_last[3];
int16_t nggalgc;
Float estl_alpha_min;
int16_t cfecount;
uint32_t idum;
Float E;
Float per;
Float atplc[LPCO + 1];
Float ma_a;
Float b_prv[2];
Float xq[BV16_XQOFF];
int pp_prv;
};
struct bv16_encode_state_s
{
Float x[BV16_XOFF]; /* 8kHz down-sampled signal memory */
Float xwd[BV16_XDOFF]; /* memory of DECF:1 decimated version of xw() */
Float dq[BV16_XOFF]; /* quantized short-term pred error */
Float dfm[DFO]; /* decimated xwd() filter memory */
Float stpem[LPCO]; /* ST Pred. Error filter memory */
Float stwpm[LPCO]; /* ST Weighting all-Pole Memory */
Float stsym[LPCO]; /* ST Synthesis filter Memory */
Float ltsym[BV16_MAXPP + 1 + BV16_FRSZ]; /* long-term synthesis filter memory */
Float ltnfm[BV16_MAXPP + 1 + BV16_FRSZ]; /* long-term noise feedback filter memory */
Float lsplast[LPCO];
Float lsppm[LPCO*BV16_LSPPORDER]; /* LSP Predictor Memory */
Float lgpm[BV16_LGPORDER];
Float hpfzm[HPO];
Float hpfpm[HPO];
Float prevlg[2];
Float lmax; /* level-adaptation */
Float lmin;
Float lmean;
Float x1;
Float level;
int cpplast; /* pitch period pf the previous frame */
Float old_A[LPCO + 1];
Float stnfz[BV16_NSTORDER];
Float stnfp[BV16_NSTORDER];
};
struct bv32_decode_state_s
{
Float stsym[LPCO];
Float ltsym[BV32_LTMOFF];
Float lsppm[LPCO*BV32_LSPPORDER];
Float lgpm[BV32_LGPORDER];
Float lsplast[LPCO];
Float dezfm[BV32_PFO];
Float depfm[BV32_PFO];
int16_t cfecount;
uint32_t idum;
Float E;
Float scplcg;
Float per;
Float atplc[LPCO + 1];
int16_t pp_last;
Float prevlg[2];
Float lgq_last;
Float bq_last[3];
Float lmax; /* level-adaptation */
Float lmin;
Float lmean;
Float x1;
Float level;
int16_t nclglim;
int16_t lctimer;
};
struct bv32_encode_state_s
{
Float x[BV32_XOFF];
Float xwd[BV32_XDOFF]; /* Memory of DECF:1 decimated version of xw() */
Float dq[BV32_XOFF]; /* Quantized short-term pred error */
Float dfm[DFO]; /* Decimated xwd() filter memory */
Float stpem[LPCO]; /* ST Pred. Error filter memory, low-band */
Float stwpm[LPCO]; /* ST Weighting all-Pole Memory, low-band */
Float stnfm[LPCO]; /* ST Noise Feedback filter Memory, Lowband */
Float stsym[LPCO]; /* ST Synthesis filter Memory, Lowband */
Float ltsym[BV32_MAXPP + 1 + BV32_FRSZ]; /* Long-term synthesis filter memory */
Float ltnfm[BV32_MAXPP + 1 + BV32_FRSZ]; /* Long-term noise feedback filter memory */
Float lsplast[LPCO];
Float lsppm[LPCO*BV32_LSPPORDER]; /* LSP Predictor Memory */
Float lgpm[BV32_LGPORDER];
Float hpfzm[HPO];
Float hpfpm[HPO];
Float prevlg[2];
Float lmax; /* level-adaptation */
Float lmin;
Float lmean;
Float x1;
Float level;
int cpplast; /* pitch period pf the previous frame */
Float allast[LPCO + 1];
};
#endif
/*- End of file ------------------------------------------------------------*/
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