Mercurial > hg > audiostuff
comparison spandsp-0.0.6pre17/src/v29tx_constellation_maps.h @ 4:26cd8f1ef0b1
import spandsp-0.0.6pre17
| author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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| date | Fri, 25 Jun 2010 15:50:58 +0200 |
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| 3:c6c5a16ce2f2 | 4:26cd8f1ef0b1 |
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| 1 /* | |
| 2 * SpanDSP - a series of DSP components for telephony | |
| 3 * | |
| 4 * v29tx_constellation_maps.h - ITU V.29 modem transmit part. | |
| 5 * Constellation mapping. | |
| 6 * | |
| 7 * Written by Steve Underwood <steveu@coppice.org> | |
| 8 * | |
| 9 * Copyright (C) 2008 Steve Underwood | |
| 10 * | |
| 11 * All rights reserved. | |
| 12 * | |
| 13 * This program is free software; you can redistribute it and/or modify | |
| 14 * it under the terms of the GNU Lesser General Public License version 2.1, | |
| 15 * as published by the Free Software Foundation. | |
| 16 * | |
| 17 * This program is distributed in the hope that it will be useful, | |
| 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 20 * GNU Lesser General Public License for more details. | |
| 21 * | |
| 22 * You should have received a copy of the GNU Lesser General Public | |
| 23 * License along with this program; if not, write to the Free Software | |
| 24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 25 * | |
| 26 * $Id: v29tx_constellation_maps.h,v 1.2 2008/09/04 14:40:05 steveu Exp $ | |
| 27 */ | |
| 28 | |
| 29 #if defined(SPANDSP_USE_FIXED_POINT) | |
| 30 static const complexi16_t v29_abab_constellation[6] = | |
| 31 #else | |
| 32 static const complexf_t v29_abab_constellation[6] = | |
| 33 #endif | |
| 34 { | |
| 35 { 3, -3}, /* 315deg high 9600 */ | |
| 36 {-3, 0}, /* 180deg low */ | |
| 37 { 1, -1}, /* 315deg low 7200 */ | |
| 38 {-3, 0}, /* 180deg low */ | |
| 39 { 0, -3}, /* 270deg low 4800 */ | |
| 40 {-3, 0} /* 180deg low */ | |
| 41 }; | |
| 42 | |
| 43 #if defined(SPANDSP_USE_FIXED_POINT) | |
| 44 static const complexi16_t v29_cdcd_constellation[6] = | |
| 45 #else | |
| 46 static const complexf_t v29_cdcd_constellation[6] = | |
| 47 #endif | |
| 48 { | |
| 49 { 3, 0}, /* 0deg low 9600 */ | |
| 50 {-3, 3}, /* 135deg high */ | |
| 51 { 3, 0}, /* 0deg low 7200 */ | |
| 52 {-1, 1}, /* 135deg low */ | |
| 53 { 3, 0}, /* 0deg low 4800 */ | |
| 54 { 0, 3} /* 90deg low */ | |
| 55 }; | |
| 56 | |
| 57 #if defined(SPANDSP_USE_FIXED_POINT) | |
| 58 static const complexi16_t v29_9600_constellation[16] = | |
| 59 #else | |
| 60 static const complexf_t v29_9600_constellation[16] = | |
| 61 #endif | |
| 62 { | |
| 63 { 3, 0}, /* 0deg low */ | |
| 64 { 1, 1}, /* 45deg low */ | |
| 65 { 0, 3}, /* 90deg low */ | |
| 66 {-1, 1}, /* 135deg low */ | |
| 67 {-3, 0}, /* 180deg low */ | |
| 68 {-1, -1}, /* 225deg low */ | |
| 69 { 0, -3}, /* 270deg low */ | |
| 70 { 1, -1}, /* 315deg low */ | |
| 71 { 5, 0}, /* 0deg high */ | |
| 72 { 3, 3}, /* 45deg high */ | |
| 73 { 0, 5}, /* 90deg high */ | |
| 74 {-3, 3}, /* 135deg high */ | |
| 75 {-5, 0}, /* 180deg high */ | |
| 76 {-3, -3}, /* 225deg high */ | |
| 77 { 0, -5}, /* 270deg high */ | |
| 78 { 3, -3} /* 315deg high */ | |
| 79 }; | |
| 80 | |
| 81 /*- End of file ------------------------------------------------------------*/ |