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+/*****************************************************************************/
+/* BroadVoice(R)16 (BV16) Fixed-Point ANSI-C Source Code */
+/* Revision Date: November 13, 2009 */
+/* Version 1.1 */
+/*****************************************************************************/
+
+/*****************************************************************************/
+/* Copyright 2000-2009 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. */
+/*****************************************************************************/
+
+
+/*****************************************************************************
+ bv16externs.c : BV16 Fixed-Point externs
+
+ $Log$
+******************************************************************************/
+
+/* POINTERS */
+extern Word16 winl[WINSZ];
+extern Word16 sstwinl_h[];
+extern Word16 sstwinl_l[];
+extern Word16 gfsz[];
+extern Word16 gfsp[];
+extern Word16 idxord[];
+extern Word16 hpfa[];
+extern Word16 hpfb[];
+extern Word16 adf_h[];
+extern Word16 adf_l[];
+extern Word16 bdf[];
+extern Word16 x[];
+extern Word16 x2[];
+extern Word16 MPTH[];
+
+/* LSP Quantization */
+extern Word16 lspecb1[];
+extern Word16 lspecb2[];
+extern Word16 lspmean[];
+extern Word16 lspp[];
+
+/* Log-Gain Quantization */
+extern Word16 lgpecb[];
+extern Word16 lgp[];
+extern Word16 lgmean;
+
+/* Log-Gain Limitation */
+extern Word16 lgclimit[];
+
+/* Excitation Codebook */
+extern Word16 cccb[];
+
+/* Function Prototypes */
+Word32 estlevel(
+Word32 lg,
+Word32 *level,
+Word32 *lmax,
+Word32 *lmin,
+Word32 *lmean,
+Word32 *x1,
+Word16 ngfae,
+Word16 nggalgc,
+Word16 *estl_alpha_min); /* Q15 */
+
+void excdec_w_synth(
+Word16 *xq, /* (o) Q0 quantized signal vector */
+Word16 *ltsym, /* (i/o) Q16 quantized excitation signal vector */
+Word16 *stsym, /* (i/o) Q0 short-term predictor memory */
+Word16 *idx, /* (o) quantizer codebook index for uq[] vector */
+Word16 *b, /* (i) Q15 coefficient of 3-tap pitch predictor */
+Word16 *cb, /* (i) Q0 codebook */
+Word16 pp, /* pitch period (# of 8 kHz samples) */
+Word16 *aq, /* (i) Q12 short-term predictor coefficients */
+Word16 gain_exp, /* gain_exp of current sub-frame */
+Word32 *EE
+);
+
+Word32 gaindec(
+Word32 *lgq, /* Q25 */
+Word16 gidx,
+Word16 *lgpm, /* Q11 */
+Word32 *prevlg, /* Q25 */
+Word32 level, /* Q25 */
+Word16 *nggalgc,
+Word32 *lg_el);
+
+void gainplc(Word32 E, Word16 *lgeqm, Word32 *lgqm);
+
+void lspdec(
+Word16 *lspq, /* Q15 */
+Word16 *lspidx,
+Word16 *lsppm, /* Q15 */
+Word16 *lspqlast);
+
+void lspdecplc(
+Word16 *lspq, /* Q15 */
+Word16 *lsppm); /* Q15 */
+
+Word16 coarsepitch(
+Word16 *xw, /* (i) Q1 weighted low-band signal frame */
+struct BV16_Encoder_State *c); /* (i/o) coder state */
+
+Word16 refinepitch(
+Word16 *x,
+Word16 cpp,
+Word16 *ppt);
+
+Word16 pitchtapquan(
+Word16 *x,
+Word16 pp,
+Word16 *b,
+Word32 *re);
+
+void excquan(
+Word16 *idx, /* quantizer codebook index for uq[] vector */
+Word16 *s, /* (i) Q0 input signal vector */
+Word16 *aq, /* (i) Q12 noise feedback filter coefficient array */
+Word16 *fsz, /* (i) Q12 short-term noise feedback filter - numerator */
+Word16 *fsp, /* (i) Q12 short-term noise feedback filter - denominator */
+Word16 *b, /* (i) Q15 coefficient of 3-tap pitch predictor */
+Word16 beta, /* (i) Q13 coefficient of pitch feedback filter */
+Word16 *stsym, /* (i/o) Q0 filter memory */
+Word16 *ltsym, /* (i/0) Q0 long-term synthesis filter memory */
+Word16 *ltnfm, /* (i/o) Q0 long-term noise feedback filter memory */
+Word16 *stnfz, /* (i/o) Q0 filter memory */
+Word16 *stnfp, /* (i/o) Q0 filter memory */
+Word16 *cb, /* (i) scalar quantizer codebook - normalized by gain_exp */
+Word16 pp, /* pitch period (# of 8 kHz samples) */
+Word16 gain_exp
+);
+
+Word16 gainquan(
+Word32 *gainq, /* Q18 */
+Word32 *ee, /* Q3 */
+Word16 *lgpm, /* Q11 */
+Word32 *prevlg, /* Q25 */
+Word32 level); /* Q25 */
+
+void lspquan(
+Word16 *lspq,
+Word16 *lspidx,
+Word16 *lsp,
+Word16 *lsppm);
+
+void preprocess(
+struct BV16_Encoder_State *cs,
+Word16 *output, /* (o) Q0 output signal, less factor 1.5 */
+Word16 *input, /* (i) Q0 input signal */
+Word16 N); /* length of signal */
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