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) );
}