FreeCalypso > hg > gsm-codec-lib

view libtwamr/spreproc.h @ 602:72cdae602d6e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmhr1/dec_func.c: rm unused static functions In the original code, sp_dec.c held two kinds of functions: those needed only as part of the decoder, and those used by both decoder and encoder engines. In this library, we have moved the latter class of functions to dec_func.c module. Almost all static functions from the original sp_dec.c, with the exception of aToRc(), are needed only on sp_dec.c side of the new divide - remove them from dec_func.c, where they became dead code.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 04 Dec 2025 18:58:22 +0000
parents 7e0aeab69b10
children
line wrap: on
line source

/*
********************************************************************************
*
*      GSM AMR-NB speech codec   R98   Version 7.6.0   December 12, 2001
*                                R99   Version 3.3.0                
*                                REL-4 Version 4.1.0                
*
********************************************************************************
*
*      File             : spreproc.h
*      Purpose          : Subframe preprocessing
*
********************************************************************************
*/
#ifndef spreproc_h
#define spreproc_h "$Id $"
 
/*
********************************************************************************
*                         INCLUDE FILES
********************************************************************************
*/
#include "tw_amr.h"
#include "typedef.h"
#include "cnst.h"

/*
********************************************************************************
*                         DECLARATION OF PROTOTYPES
********************************************************************************
*/
int subframePreProc(
    enum Mode mode,            /* i  : coder mode                            */
    const Word16 gamma1[],     /* i  : spectral exp. factor 1                */
    const Word16 gamma1_12k2[],/* i  : spectral exp. factor 1 for EFR        */
    const Word16 gamma2[],     /* i  : spectral exp. factor 2                */
    Word16 *A,                 /* i  : A(z) unquantized for the 4 subframes  */
    Word16 *Aq,                /* i  : A(z)   quantized for the 4 subframes  */
    Word16 *speech,            /* i  : speech segment                        */
    Word16 *mem_err,           /* i  : pointer to error signal               */
    Word16 *mem_w0,            /* i  : memory of weighting filter            */
    Word16 *zero,              /* i  : pointer to zero vector                */
    Word16 ai_zero[],          /* o  : history of weighted synth. filter     */
    Word16 exc[],              /* o  : long term prediction residual         */
    Word16 h1[],               /* o  : impulse response                      */
    Word16 xn[],               /* o  : target vector for pitch search        */
    Word16 res2[],             /* o  : long term prediction residual         */
    Word16 error[]             /* o  : error of LPC synthesis filter         */
);

#endif