diff options
Diffstat (limited to 'thirdparties/win32/include/BroadVoice16/bvcommon/bvcommon.h')
| -rw-r--r-- | thirdparties/win32/include/BroadVoice16/bvcommon/bvcommon.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/thirdparties/win32/include/BroadVoice16/bvcommon/bvcommon.h b/thirdparties/win32/include/BroadVoice16/bvcommon/bvcommon.h new file mode 100644 index 0000000..4b285a3 --- /dev/null +++ b/thirdparties/win32/include/BroadVoice16/bvcommon/bvcommon.h @@ -0,0 +1,130 @@ +/*****************************************************************************/ +/* 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. */ +/*****************************************************************************/ + + +/***************************************************************************** + bvcommon.h : Common Fixed-Point Library: common #defines and prototypes + + $Log$ +******************************************************************************/ + +#ifndef BVCOMMON_H +#define BVCOMMON_H + +/* ----- Basic Codec Parameters ----- */ + +#define LPCO 8 /* LPC Order for 8 kHz sampled lowband signal */ +#define Ngrd 60 + +#define LSPMIN 49 /* 0.00150 minimum lsp frequency */ +#define LSPMAX 32694 /* 0.99775 maximum lsp frequency */ +#define DLSPMIN 410 /* 0.01250 minimum lsp spacing */ +#define STBLDIM 3 /* dimension of stability enforcement */ + +/* LPC bandwidth expansion */ +extern Word16 bwel[]; + +/* LPC to lsp Conversion */ +extern Word16 grid[]; + +/* LPC WEIGHTING FILTER */ +extern Word16 STWAL[]; + +/* Coarse Pitch Search */ +extern Word16 invk[]; + +/* Pitch tap codebook - actually content different for BV16 and BV32 */ +extern Word16 pp9cb[]; + +/* Function prototypes */ + +void azfilter( + Word16 a[], /* (i) Q12 : prediction coefficients */ + Word16 m, /* (i) : LPC order */ + Word16 x[], /* (i) Q0 : input signal samples, incl. past */ + Word16 y[], /* (o) Q0 : filtered output signal */ + Word16 lg /* (i) : size of filtering */ + ); + +void apfilter( + Word16 a[], /* (i) Q12 : prediction coefficients */ + Word16 m, /* (i) : LPC order */ + Word16 x[], /* (i) Q0 : input signal */ + Word16 y[], /* (o) Q0 : output signal */ + Word16 lg, /* (i) : size of filtering */ + Word16 mem[], /* (i/o) Q0: filter memory */ + Word16 update /* (i) : memory update flag */ + ); + +void lsp2a( +Word16 lsp[], /* (i) Q15 : line spectral frequencies */ +Word16 a[]); /* (o) Q12 : predictor coefficients (order = 10) */ + +void stblz_lsp( +Word16 *lsp, /* Q15 */ +Word16 order); + +Word16 stblchck( +Word16 *x, +Word16 vdim); + +void a2lsp( +Word16 a[], /* (i) Q12 : predictor coefficients */ +Word16 lsp[], /* (o) Q15 : line spectral frequencies */ +Word16 old_lsp[]); /* (i) : old lsp[] (in case not found 10 roots) */ + +void Autocorr( + Word32 r[], /* (o) : Autocorrelations */ + Word16 x[], /* (i) : Input signal */ + Word16 window[],/* (i) : LPC Analysis window */ + Word16 l_window,/* (i) : window length */ + Word16 m); /* (i) : LPC order */ + +void Spectral_Smoothing( +Word16 m, /* (i) : LPC order */ +Word32 rl[], /* (i/o) : Autocorrelations lags */ +Word16 lag_h[], /* (i) : SST coefficients (msb) */ +Word16 lag_l[]); /* (i) : SST coefficients (lsb) */ + +void Levinson( + Word32 r32[], /* (i) : r32[] double precision vector of autocorrelation coefficients */ + Word16 a[], /* (o) : a[] in Q12 - LPC coefficients */ + Word16 old_a[], /* (i/o): old_a[] in Q12 - previous LPC coefficients */ + Word16 m); /* (i) : LPC order */ + +void pp3dec( +Word16 idx, +Word16 *b); + +void vqdec( +Word16 *xq, +Word16 idx, +Word16 *cb, +Word16 vdim); + +#ifdef _MSC_VER +#include "math.h" +static __inline double round(double val) +{ + return floor(val + 0.5); +} +#endif + +#endif /* BVCOMMON_H */ |
