Esempio n. 1
0
void Gsm_Decoder (
	struct gsm_state	* S,

	word		* LARcr,	/* [0..7]		IN	*/

	word		* Ncr,		/* [0..3] 		IN 	*/
	word		* bcr,		/* [0..3]		IN	*/
	word		* Mcr,		/* [0..3] 		IN 	*/
	word		* xmaxcr,	/* [0..3]		IN 	*/
	word		* xMcr,		/* [0..13*4]		IN	*/

	word		* s)		/* [0..159]		OUT 	*/
{
	int		j, k;
	word		erp[40], wt[160];
	word		* drp = S->dp0 + 120;

	for (j=0; j <= 3; j++, xmaxcr++, bcr++, Ncr++, Mcr++, xMcr += 13) {

		Gsm_RPE_Decoding( S, *xmaxcr, *Mcr, xMcr, erp );
		Gsm_Long_Term_Synthesis_Filtering( S, *Ncr, *bcr, erp, drp );

		for (k = 0; k <= 39; k++) wt[ j * 40 + k ] =  drp[ k ];
	}

	Gsm_Short_Term_Synthesis_Filter( S, LARcr, wt, s );
	Postprocessing(S, s);
}
Esempio n. 2
0
static void Gsm_Decoder(struct gsm_state *S, gsmword *LARcr, gsmword *Ncr, gsmword *bcr,
                        gsmword *Mcr, gsmword *xmaxcr, gsmword *xMcr, short *s)
{
	int		    j;
	gsmword		erp[40], wt[160];
	gsmword		* drp = S->dp0 + 120;

	for(j=0; j <= 3; j++, xmaxcr++, bcr++, Ncr++, Mcr++, xMcr += 13)
    {
		Gsm_RPE_Decoding( *xmaxcr, *Mcr, xMcr, erp );
		Gsm_Long_Term_Synthesis_Filtering( S, *Ncr, *bcr, erp, drp );

        memcpy(&wt[ j * 40 ], drp, sizeof(drp[0]) * 40);
	}

	Gsm_Short_Term_Synthesis_Filter(S, LARcr, wt, s);
	Postprocessing(S, s);
}