FreeCalypso > hg > gsm-codec-lib

view libtwamr/lsp_avg.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 9cd332a94c97
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             : lsp_avg.h
*      Purpose:         : LSP averaging and history
*                         The LSPs are averaged over 8 frames
*
********************************************************************************
*/
#ifndef lsp_avg_h
#define lsp_avg_h "$Id $"
 
/*
********************************************************************************
*                         INCLUDE FILES
********************************************************************************
*/
#include "typedef.h"
#include "cnst.h"

/*
********************************************************************************
*                         LOCAL VARIABLES AND TABLES
********************************************************************************
*/

#define EXPCONST          5243               /* 0.16 in Q15 */
 
/*
********************************************************************************
*                         DEFINITION OF DATA TYPES
********************************************************************************
*/
typedef struct {
  Word16 lsp_meanSave[M];          /* Averaged LSPs saved for efficiency  */
} lsp_avgState;
 
/*
********************************************************************************
*                         DECLARATION OF PROTOTYPES
********************************************************************************
*/

/*
**************************************************************************
*
*  Function    : lsp_history_reset
*  Purpose     : Resets state memory
*
**************************************************************************
*/
void lsp_avg_reset (
    lsp_avgState *state
);
 
/*
**************************************************************************
*
*  Function    : lsp_avg
*  Purpose     : Calculate the LSP averages
*
**************************************************************************
*/
void lsp_avg (
    lsp_avgState *st,     /* i/o : State struct                 Q15 */
    Word16 *lsp           /* i   : LSP vector                   Q15 */
);
#endif