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)

)

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.

References gsm_state::dp0, and GSM_ADD().

{
   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) );
}