view libgsmhr1/sid_cw_params.c @ 584:fc7a59deb3c3 default tip

hrutil: new program gsmhr-tfo-xfrm
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 14 Feb 2025 01:34:48 +0000
parents 993cb9273f89
children
line wrap: on
line source

/*
 * The function in this module fills parameters 4 through 17 of
 * generated SID frames, setting them to the required SID codeword.
 * It can also be used to transform a speech frame into a SID frame
 * with the same R0 and LPC parameters.
 */

#include <stdint.h>
#include "tw_gsmhr.h"

void gsmhr_set_sid_cw_params(int16_t *params)
{
	/* Int_LPC and Mode */
	params[4] = 1;
	params[5] = 3;
	/* subframe 1 */
	params[6] = 0xFF;
	params[7] = 0x1FF;
	params[8] = 0x1F;
	/* subframe 2 */
	params[9] = 0xF;
	params[10] = 0x1FF;
	params[11] = 0x1F;
	/* subframe 3 */
	params[12] = 0xF;
	params[13] = 0x1FF;
	params[14] = 0x1F;
	/* subframe 4 */
	params[15] = 0xF;
	params[16] = 0x1FF;
	params[17] = 0x1F;
}