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f877354a11
* #1455 Add support for airspy hf+/discovery tuners * #1455 testing updates --------- Co-authored-by: Dennis Sheirer <dsheirer@github.com>
66 lines
2.1 KiB
Java
66 lines
2.1 KiB
Java
/*
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* *****************************************************************************
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* Copyright (C) 2014-2023 Dennis Sheirer
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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 General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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* ****************************************************************************
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*/
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package io.github.dsheirer.util;
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/**
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* Utilities for working with bytes and byte arrays
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*/
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public class ByteUtil
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{
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/**
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* Converts a byte array to an integer using big endian format.
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* @param bytes containing four bytes.
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* @param offset into the byte array to start parsing.
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* @return signed integer value.
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*/
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public static int toInteger(byte[] bytes, int offset)
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{
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if(bytes == null || bytes.length < (offset + 4))
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{
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throw new IllegalArgumentException("Conversion to integer requires byte array with at least 4 bytes - " +
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"length:" + bytes.length + " offset:" + offset);
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}
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int value = (bytes[offset + 3] & 0xFF) << 24;
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value += (bytes[offset + 2] & 0xFF) << 16;
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value += (bytes[offset + 1] & 0xFF) << 8;
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value += (bytes[offset] & 0xFF);
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return value;
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}
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/**
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* Formats the byte array as a string of hexadecimal values.
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* @param bytes to format
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* @return hex string
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*/
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public static String toHexString(byte[] bytes)
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{
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StringBuilder sb = new StringBuilder();
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for(byte b : bytes)
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{
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sb.append(String.format("%02X", b));
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}
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return sb.toString();
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}
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}
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