v29tx_constellation_maps.h
/*
* SpanDSP - a series of DSP components for telephony
*
* v29tx_constellation_maps.h - ITU V.29 modem transmit part.
* Constellation mapping.
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2008 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined(FP_SCALE)
#if defined(SPANDSP_USE_FIXED_POINT)
#define FP_SCALE(x) ((int16_t) x)
#else
#define FP_SCALE(x) (x)
#endif
#endif
#if defined(SPANDSP_USE_FIXED_POINT)
static const complexi16_t v29_abab_constellation[6] =
#else
static const complexf_t v29_abab_constellation[6] =
#endif
{
{FP_SCALE( 3.0f), FP_SCALE(-3.0f)}, /* 315deg high 9600 */
{FP_SCALE(-3.0f), FP_SCALE( 0.0f)}, /* 180deg low */
{FP_SCALE( 1.0f), FP_SCALE(-1.0f)}, /* 315deg low 7200 */
{FP_SCALE(-3.0f), FP_SCALE( 0.0f)}, /* 180deg low */
{FP_SCALE( 0.0f), FP_SCALE(-3.0f)}, /* 270deg low 4800 */
{FP_SCALE(-3.0f), FP_SCALE( 0.0f)} /* 180deg low */
};
#if defined(SPANDSP_USE_FIXED_POINT)
static const complexi16_t v29_cdcd_constellation[6] =
#else
static const complexf_t v29_cdcd_constellation[6] =
#endif
{
{FP_SCALE( 3.0f), FP_SCALE( 0.0f)}, /* 0deg low 9600 */
{FP_SCALE(-3.0f), FP_SCALE( 3.0f)}, /* 135deg high */
{FP_SCALE( 3.0f), FP_SCALE( 0.0f)}, /* 0deg low 7200 */
{FP_SCALE(-1.0f), FP_SCALE( 1.0f)}, /* 135deg low */
{FP_SCALE( 3.0f), FP_SCALE( 0.0f)}, /* 0deg low 4800 */
{FP_SCALE( 0.0f), FP_SCALE( 3.0f)} /* 90deg low */
};
#if defined(SPANDSP_USE_FIXED_POINT)
static const complexi16_t v29_9600_constellation[16] =
#else
static const complexf_t v29_9600_constellation[16] =
#endif
{
{FP_SCALE( 3.0f), FP_SCALE( 0.0f)}, /* 0deg low */
{FP_SCALE( 1.0f), FP_SCALE( 1.0f)}, /* 45deg low */
{FP_SCALE( 0.0f), FP_SCALE( 3.0f)}, /* 90deg low */
{FP_SCALE(-1.0f), FP_SCALE( 1.0f)}, /* 135deg low */
{FP_SCALE(-3.0f), FP_SCALE( 0.0f)}, /* 180deg low */
{FP_SCALE(-1.0f), FP_SCALE(-1.0f)}, /* 225deg low */
{FP_SCALE( 0.0f), FP_SCALE(-3.0f)}, /* 270deg low */
{FP_SCALE( 1.0f), FP_SCALE(-1.0f)}, /* 315deg low */
{FP_SCALE( 5.0f), FP_SCALE( 0.0f)}, /* 0deg high */
{FP_SCALE( 3.0f), FP_SCALE( 3.0f)}, /* 45deg high */
{FP_SCALE( 0.0f), FP_SCALE( 5.0f)}, /* 90deg high */
{FP_SCALE(-3.0f), FP_SCALE( 3.0f)}, /* 135deg high */
{FP_SCALE(-5.0f), FP_SCALE( 0.0f)}, /* 180deg high */
{FP_SCALE(-3.0f), FP_SCALE(-3.0f)}, /* 225deg high */
{FP_SCALE( 0.0f), FP_SCALE(-5.0f)}, /* 270deg high */
{FP_SCALE( 3.0f), FP_SCALE(-3.0f)} /* 315deg high */
};
/*- End of file ------------------------------------------------------------*/
complexf_t
Definition complex.h:43
complexi16_t
Definition complex.h:89