code.c File Reference

#include "config.h"
#include "proto.h"
#include "private.h"
#include "gsm.h"

Include dependency graph for code.c:

Go to the source code of this file.

Functions
char *memcpy	P ((char *, char *, int))
void Gsm_Coder	P8 ((S, s, LARc, Nc, bc, Mc, xmaxc, xMc), struct gsm_state *S, word *s, word *LARc, word *Nc, word *bc, word *Mc, word *xmaxc, word *xMc)

Function Documentation

P()

char *memcpy P ( (char *, char *, int)  )

extern

P8()

void Gsm_Coder P8	(	(S, s, LARc, Nc, bc, Mc, xmaxc, xMc)	,
		struct gsm_state *	S,
		word *	s,
		word *	LARc,
		word *	Nc,
		word *	bc,
		word *	Mc,
		word *	xmaxc,
		word *	xMc
	)

Definition at line 26 of file code.c.

{
    int k;
    word    * dp  = S->dp0 + 120;   /* [ -120...-1 ] */
    word    * dpp = dp;     /* [ 0...39 ]    */
 
    word    e[50];
 
    word    so[160];
 
    memset(e,0,sizeof e);
    Gsm_Preprocess          (S, s, so);
    Gsm_LPC_Analysis        (S, so, LARc);
    Gsm_Short_Term_Analysis_Filter  (S, LARc, so);
 
    for (k = 0; k <= 3; k++, xMc += 13) {
 
        Gsm_Long_Term_Predictor ( S,
                     so+k*40, /* d      [0..39] IN  */
                     dp,      /* dp  [-120..-1] IN  */
                    e + 5,    /* e      [0..39] OUT */
                    dpp,      /* dpp    [0..39] OUT */
                     Nc++,
                     bc++);
 
        Gsm_RPE_Encoding    ( S,
                    e + 5,  /* e      ][0..39][ IN/OUT */
                      xmaxc++, Mc++, xMc );
        /*
         * Gsm_Update_of_reconstructed_short_time_residual_signal
         *          ( dpp, e + 5, dp );
         */
 
        { register int i;
          for (i = 0; i <= 39; i++)
            dp[ i ] = GSM_ADD( e[5 + i], dpp[i] );
        }
        dp  += 40;
        dpp += 40;
 
    }
    (void)memcpy( (char *)S->dp0, (char *)(S->dp0 + 160),
        120 * sizeof(*S->dp0) );
}

References bc, GSM_ADD(), LARc, Mc, Nc, S, and xmaxc.