836 lines
16 KiB
Java
836 lines
16 KiB
Java
/*
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* Copyright (C) 2016 Southern Storm Software, Pty Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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package com.southernstorm.noise.protocol;
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/**
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* Information about all supported handshake patterns.
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*/
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class Pattern {
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private Pattern() {}
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// Token codes.
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public static final short S = 1;
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public static final short E = 2;
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public static final short EE = 3;
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public static final short ES = 4;
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public static final short SE = 5;
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public static final short SS = 6;
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public static final short F = 7;
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public static final short FF = 8;
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public static final short FLIP_DIR = 255;
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// Pattern flag bits.
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public static final short FLAG_LOCAL_STATIC = 0x0001;
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public static final short FLAG_LOCAL_EPHEMERAL = 0x0002;
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public static final short FLAG_LOCAL_REQUIRED = 0x0004;
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public static final short FLAG_LOCAL_EPHEM_REQ = 0x0008;
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public static final short FLAG_LOCAL_HYBRID = 0x0010;
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public static final short FLAG_LOCAL_HYBRID_REQ = 0x0020;
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public static final short FLAG_REMOTE_STATIC = 0x0100;
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public static final short FLAG_REMOTE_EPHEMERAL = 0x0200;
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public static final short FLAG_REMOTE_REQUIRED = 0x0400;
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public static final short FLAG_REMOTE_EPHEM_REQ = 0x0800;
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public static final short FLAG_REMOTE_HYBRID = 0x1000;
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public static final short FLAG_REMOTE_HYBRID_REQ = 0x2000;
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private static final short[] noise_pattern_N = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_REQUIRED,
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E,
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ES
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};
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private static final short[] noise_pattern_K = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_REQUIRED |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_REQUIRED,
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E,
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ES,
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SS
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};
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private static final short[] noise_pattern_X = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_REQUIRED,
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E,
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ES,
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S,
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SS
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};
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private static final short[] noise_pattern_NN = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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EE
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};
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private static final short[] noise_pattern_NK = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_REQUIRED,
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E,
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ES,
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FLIP_DIR,
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E,
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EE
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};
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private static final short[] noise_pattern_NX = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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EE,
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S,
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ES
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};
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private static final short[] noise_pattern_XN = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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EE,
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FLIP_DIR,
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S,
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SE
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};
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private static final short[] noise_pattern_XK = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_REQUIRED,
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E,
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ES,
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FLIP_DIR,
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E,
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EE,
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FLIP_DIR,
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S,
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SE
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};
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private static final short[] noise_pattern_XX = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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EE,
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S,
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ES,
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FLIP_DIR,
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S,
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SE
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};
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private static final short[] noise_pattern_KN = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_REQUIRED |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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EE,
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SE
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};
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private static final short[] noise_pattern_KK = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_REQUIRED |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_REQUIRED,
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E,
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ES,
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SS,
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FLIP_DIR,
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E,
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EE,
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SE
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};
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private static final short[] noise_pattern_KX = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_REQUIRED |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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EE,
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SE,
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S,
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ES
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};
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private static final short[] noise_pattern_IN = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_EPHEMERAL,
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E,
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S,
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FLIP_DIR,
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E,
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EE,
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SE
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};
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private static final short[] noise_pattern_IK = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_REQUIRED,
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E,
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ES,
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S,
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SS,
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FLIP_DIR,
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E,
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EE,
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SE
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};
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private static final short[] noise_pattern_IX = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL,
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E,
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S,
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FLIP_DIR,
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E,
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EE,
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SE,
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S,
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ES
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};
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private static final short[] noise_pattern_XXfallback = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_EPHEM_REQ,
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E,
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EE,
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S,
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SE,
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FLIP_DIR,
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S,
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ES
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};
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private static final short[] noise_pattern_Xnoidh = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_REQUIRED,
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E,
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S,
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ES,
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SS
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};
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private static final short[] noise_pattern_NXnoidh = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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S,
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EE,
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ES
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};
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private static final short[] noise_pattern_XXnoidh = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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S,
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EE,
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ES,
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FLIP_DIR,
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S,
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SE
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};
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private static final short[] noise_pattern_KXnoidh = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_REQUIRED |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL,
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E,
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FLIP_DIR,
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E,
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S,
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EE,
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SE,
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ES
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};
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private static final short[] noise_pattern_IKnoidh = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_REQUIRED,
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E,
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S,
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ES,
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SS,
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FLIP_DIR,
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E,
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EE,
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SE
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};
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private static final short[] noise_pattern_IXnoidh = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL,
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E,
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S,
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FLIP_DIR,
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E,
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S,
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EE,
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SE,
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ES
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};
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private static final short[] noise_pattern_NNhfs = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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E,
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F,
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FLIP_DIR,
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E,
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F,
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EE,
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FF
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};
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private static final short[] noise_pattern_NKhfs = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID |
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FLAG_REMOTE_REQUIRED,
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E,
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F,
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ES,
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FLIP_DIR,
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E,
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F,
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EE,
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FF
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};
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private static final short[] noise_pattern_NXhfs = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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E,
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F,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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S,
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ES
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};
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private static final short[] noise_pattern_XNhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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E,
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F,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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FLIP_DIR,
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S,
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SE
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};
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private static final short[] noise_pattern_XKhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID |
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FLAG_REMOTE_REQUIRED,
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E,
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F,
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ES,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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FLIP_DIR,
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S,
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SE
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};
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private static final short[] noise_pattern_XXhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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E,
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F,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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S,
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ES,
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FLIP_DIR,
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S,
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SE
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};
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private static final short[] noise_pattern_KNhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_REQUIRED |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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E,
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F,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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SE
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};
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private static final short[] noise_pattern_KKhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_REQUIRED |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID |
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FLAG_REMOTE_REQUIRED,
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E,
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F,
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ES,
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SS,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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SE
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};
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private static final short[] noise_pattern_KXhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_REQUIRED |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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E,
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F,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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SE,
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S,
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ES
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};
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private static final short[] noise_pattern_INhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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E,
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F,
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S,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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SE
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};
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private static final short[] noise_pattern_IKhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID |
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FLAG_REMOTE_REQUIRED,
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E,
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F,
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ES,
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S,
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SS,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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SE
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};
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private static final short[] noise_pattern_IXhfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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|
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E,
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F,
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S,
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FLIP_DIR,
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E,
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F,
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EE,
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FF,
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SE,
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S,
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|
ES
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};
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private static final short[] noise_pattern_XXfallback_hfs = {
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FLAG_LOCAL_STATIC |
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
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FLAG_REMOTE_STATIC |
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FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_EPHEM_REQ |
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FLAG_REMOTE_HYBRID |
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FLAG_REMOTE_HYBRID_REQ,
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|
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E,
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F,
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EE,
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FF,
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S,
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SE,
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FLIP_DIR,
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S,
|
|
ES
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};
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|
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private static final short[] noise_pattern_NXnoidh_hfs = {
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FLAG_LOCAL_EPHEMERAL |
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FLAG_LOCAL_HYBRID |
|
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FLAG_REMOTE_STATIC |
|
|
FLAG_REMOTE_EPHEMERAL |
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FLAG_REMOTE_HYBRID,
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|
|
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E,
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F,
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FLIP_DIR,
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E,
|
|
F,
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|
S,
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|
EE,
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|
FF,
|
|
ES
|
|
};
|
|
|
|
private static final short[] noise_pattern_XXnoidh_hfs = {
|
|
FLAG_LOCAL_STATIC |
|
|
FLAG_LOCAL_EPHEMERAL |
|
|
FLAG_LOCAL_HYBRID |
|
|
FLAG_REMOTE_STATIC |
|
|
FLAG_REMOTE_EPHEMERAL |
|
|
FLAG_REMOTE_HYBRID,
|
|
|
|
E,
|
|
F,
|
|
FLIP_DIR,
|
|
E,
|
|
F,
|
|
S,
|
|
EE,
|
|
FF,
|
|
ES,
|
|
FLIP_DIR,
|
|
S,
|
|
SE
|
|
};
|
|
|
|
private static final short[] noise_pattern_KXnoidh_hfs = {
|
|
FLAG_LOCAL_STATIC |
|
|
FLAG_LOCAL_EPHEMERAL |
|
|
FLAG_LOCAL_REQUIRED |
|
|
FLAG_LOCAL_HYBRID |
|
|
FLAG_REMOTE_STATIC |
|
|
FLAG_REMOTE_EPHEMERAL |
|
|
FLAG_REMOTE_HYBRID,
|
|
|
|
E,
|
|
F,
|
|
FLIP_DIR,
|
|
E,
|
|
F,
|
|
S,
|
|
EE,
|
|
FF,
|
|
SE,
|
|
ES
|
|
};
|
|
|
|
private static final short[] noise_pattern_IKnoidh_hfs = {
|
|
FLAG_LOCAL_STATIC |
|
|
FLAG_LOCAL_EPHEMERAL |
|
|
FLAG_LOCAL_HYBRID |
|
|
FLAG_REMOTE_STATIC |
|
|
FLAG_REMOTE_EPHEMERAL |
|
|
FLAG_REMOTE_EPHEMERAL |
|
|
FLAG_REMOTE_HYBRID,
|
|
|
|
E,
|
|
F,
|
|
S,
|
|
ES,
|
|
SS,
|
|
FLIP_DIR,
|
|
E,
|
|
F,
|
|
EE,
|
|
FF,
|
|
SE
|
|
};
|
|
|
|
private static final short[] noise_pattern_IXnoidh_hfs = {
|
|
FLAG_LOCAL_STATIC |
|
|
FLAG_LOCAL_EPHEMERAL |
|
|
FLAG_LOCAL_HYBRID |
|
|
FLAG_REMOTE_STATIC |
|
|
FLAG_REMOTE_EPHEMERAL |
|
|
FLAG_REMOTE_HYBRID,
|
|
|
|
E,
|
|
F,
|
|
S,
|
|
FLIP_DIR,
|
|
E,
|
|
F,
|
|
S,
|
|
EE,
|
|
FF,
|
|
SE,
|
|
ES
|
|
};
|
|
|
|
/**
|
|
* Look up the description information for a pattern.
|
|
*
|
|
* @param name The name of the pattern.
|
|
* @return The pattern description or null.
|
|
*/
|
|
public static short[] lookup(String name)
|
|
{
|
|
if (name.equals("N"))
|
|
return noise_pattern_N;
|
|
else if (name.equals("K"))
|
|
return noise_pattern_K;
|
|
else if (name.equals("X"))
|
|
return noise_pattern_X;
|
|
else if (name.equals("NN"))
|
|
return noise_pattern_NN;
|
|
else if (name.equals("NK"))
|
|
return noise_pattern_NK;
|
|
else if (name.equals("NX"))
|
|
return noise_pattern_NX;
|
|
else if (name.equals("XN"))
|
|
return noise_pattern_XN;
|
|
else if (name.equals("XK"))
|
|
return noise_pattern_XK;
|
|
else if (name.equals("XX"))
|
|
return noise_pattern_XX;
|
|
else if (name.equals("KN"))
|
|
return noise_pattern_KN;
|
|
else if (name.equals("KK"))
|
|
return noise_pattern_KK;
|
|
else if (name.equals("KX"))
|
|
return noise_pattern_KX;
|
|
else if (name.equals("IN"))
|
|
return noise_pattern_IN;
|
|
else if (name.equals("IK"))
|
|
return noise_pattern_IK;
|
|
else if (name.equals("IX"))
|
|
return noise_pattern_IX;
|
|
else if (name.equals("XXfallback"))
|
|
return noise_pattern_XXfallback;
|
|
else if (name.equals("Xnoidh"))
|
|
return noise_pattern_Xnoidh;
|
|
else if (name.equals("NXnoidh"))
|
|
return noise_pattern_NXnoidh;
|
|
else if (name.equals("XXnoidh"))
|
|
return noise_pattern_XXnoidh;
|
|
else if (name.equals("KXnoidh"))
|
|
return noise_pattern_KXnoidh;
|
|
else if (name.equals("IKnoidh"))
|
|
return noise_pattern_IKnoidh;
|
|
else if (name.equals("IXnoidh"))
|
|
return noise_pattern_IXnoidh;
|
|
else if (name.equals("NNhfs"))
|
|
return noise_pattern_NNhfs;
|
|
else if (name.equals("NKhfs"))
|
|
return noise_pattern_NKhfs;
|
|
else if (name.equals("NXhfs"))
|
|
return noise_pattern_NXhfs;
|
|
else if (name.equals("XNhfs"))
|
|
return noise_pattern_XNhfs;
|
|
else if (name.equals("XKhfs"))
|
|
return noise_pattern_XKhfs;
|
|
else if (name.equals("XXhfs"))
|
|
return noise_pattern_XXhfs;
|
|
else if (name.equals("KNhfs"))
|
|
return noise_pattern_KNhfs;
|
|
else if (name.equals("KKhfs"))
|
|
return noise_pattern_KKhfs;
|
|
else if (name.equals("KXhfs"))
|
|
return noise_pattern_KXhfs;
|
|
else if (name.equals("INhfs"))
|
|
return noise_pattern_INhfs;
|
|
else if (name.equals("IKhfs"))
|
|
return noise_pattern_IKhfs;
|
|
else if (name.equals("IXhfs"))
|
|
return noise_pattern_IXhfs;
|
|
else if (name.equals("XXfallback+hfs"))
|
|
return noise_pattern_XXfallback_hfs;
|
|
else if (name.equals("NXnoidh+hfs"))
|
|
return noise_pattern_NXnoidh_hfs;
|
|
else if (name.equals("XXnoidh+hfs"))
|
|
return noise_pattern_XXnoidh_hfs;
|
|
else if (name.equals("KXnoidh+hfs"))
|
|
return noise_pattern_KXnoidh_hfs;
|
|
else if (name.equals("IKnoidh+hfs"))
|
|
return noise_pattern_IKnoidh_hfs;
|
|
else if (name.equals("IXnoidh+hfs"))
|
|
return noise_pattern_IXnoidh_hfs;
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Reverses the local and remote flags for a pattern.
|
|
*
|
|
* @param flags The flags, assuming that the initiator is "local".
|
|
* @return The reversed flags, with the responder now being "local".
|
|
*/
|
|
public static short reverseFlags(short flags)
|
|
{
|
|
return (short)(((flags >> 8) & 0x00FF) | ((flags << 8) & 0xFF00));
|
|
}
|
|
}
|