80 lines
4.1 KiB
C
80 lines
4.1 KiB
C
/*
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* SpanDSP - a series of DSP components for telephony
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*
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* v29tx_constellation_maps.h - ITU V.29 modem transmit part.
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* Constellation mapping.
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*
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* Written by Steve Underwood <steveu@coppice.org>
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*
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* Copyright (C) 2008, 2012 Steve Underwood
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 2.1,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if defined(SPANDSP_USE_FIXED_POINT)
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static const complexi16_t v29_abab_constellation[6] =
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#else
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static const complexf_t v29_abab_constellation[6] =
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#endif
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{
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{FP_CONSTELLATION_SCALE( 3.0f), FP_CONSTELLATION_SCALE(-3.0f)}, /* 315deg high 9600 */
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{FP_CONSTELLATION_SCALE(-3.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 180deg low */
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{FP_CONSTELLATION_SCALE( 1.0f), FP_CONSTELLATION_SCALE(-1.0f)}, /* 315deg low 7200 */
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{FP_CONSTELLATION_SCALE(-3.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 180deg low */
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{FP_CONSTELLATION_SCALE( 0.0f), FP_CONSTELLATION_SCALE(-3.0f)}, /* 270deg low 4800 */
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{FP_CONSTELLATION_SCALE(-3.0f), FP_CONSTELLATION_SCALE( 0.0f)} /* 180deg low */
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};
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#if defined(SPANDSP_USE_FIXED_POINT)
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static const complexi16_t v29_cdcd_constellation[6] =
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#else
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static const complexf_t v29_cdcd_constellation[6] =
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#endif
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{
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{FP_CONSTELLATION_SCALE( 3.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 0deg low 9600 */
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{FP_CONSTELLATION_SCALE(-3.0f), FP_CONSTELLATION_SCALE( 3.0f)}, /* 135deg high */
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{FP_CONSTELLATION_SCALE( 3.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 0deg low 7200 */
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{FP_CONSTELLATION_SCALE(-1.0f), FP_CONSTELLATION_SCALE( 1.0f)}, /* 135deg low */
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{FP_CONSTELLATION_SCALE( 3.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 0deg low 4800 */
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{FP_CONSTELLATION_SCALE( 0.0f), FP_CONSTELLATION_SCALE( 3.0f)} /* 90deg low */
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};
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#if defined(SPANDSP_USE_FIXED_POINT)
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static const complexi16_t v29_9600_constellation[16] =
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#else
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static const complexf_t v29_9600_constellation[16] =
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#endif
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{
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{FP_CONSTELLATION_SCALE( 3.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 0deg low */
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{FP_CONSTELLATION_SCALE( 1.0f), FP_CONSTELLATION_SCALE( 1.0f)}, /* 45deg low */
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{FP_CONSTELLATION_SCALE( 0.0f), FP_CONSTELLATION_SCALE( 3.0f)}, /* 90deg low */
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{FP_CONSTELLATION_SCALE(-1.0f), FP_CONSTELLATION_SCALE( 1.0f)}, /* 135deg low */
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{FP_CONSTELLATION_SCALE(-3.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 180deg low */
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{FP_CONSTELLATION_SCALE(-1.0f), FP_CONSTELLATION_SCALE(-1.0f)}, /* 225deg low */
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{FP_CONSTELLATION_SCALE( 0.0f), FP_CONSTELLATION_SCALE(-3.0f)}, /* 270deg low */
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{FP_CONSTELLATION_SCALE( 1.0f), FP_CONSTELLATION_SCALE(-1.0f)}, /* 315deg low */
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{FP_CONSTELLATION_SCALE( 5.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 0deg high */
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{FP_CONSTELLATION_SCALE( 3.0f), FP_CONSTELLATION_SCALE( 3.0f)}, /* 45deg high */
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{FP_CONSTELLATION_SCALE( 0.0f), FP_CONSTELLATION_SCALE( 5.0f)}, /* 90deg high */
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{FP_CONSTELLATION_SCALE(-3.0f), FP_CONSTELLATION_SCALE( 3.0f)}, /* 135deg high */
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{FP_CONSTELLATION_SCALE(-5.0f), FP_CONSTELLATION_SCALE( 0.0f)}, /* 180deg high */
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{FP_CONSTELLATION_SCALE(-3.0f), FP_CONSTELLATION_SCALE(-3.0f)}, /* 225deg high */
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{FP_CONSTELLATION_SCALE( 0.0f), FP_CONSTELLATION_SCALE(-5.0f)}, /* 270deg high */
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{FP_CONSTELLATION_SCALE( 3.0f), FP_CONSTELLATION_SCALE(-3.0f)} /* 315deg high */
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};
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/*- End of file ------------------------------------------------------------*/
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