forked from mirror/DotRecast
96 lines
3.5 KiB
C#
96 lines
3.5 KiB
C#
/*
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recast4j copyright (c) 2021 Piotr Piastucki piotr@jtilia.org
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DotRecast Copyright (c) 2023-2024 Choi Ikpil ikpil@naver.com
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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namespace DotRecast.Core
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{
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public static class RcByteUtils
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{
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public static int GetInt(byte[] data, int position, RcByteOrder order)
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{
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return order == RcByteOrder.BIG_ENDIAN ? GetIntBE(data, position) : GetIntLE(data, position);
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}
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public static int GetIntBE(byte[] data, int position)
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{
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return ((data[position] & 0xff) << 24)
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| ((data[position + 1] & 0xff) << 16)
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| ((data[position + 2] & 0xff) << 8)
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| (data[position + 3] & 0xff);
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}
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public static int GetIntLE(byte[] data, int position)
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{
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return ((data[position + 3] & 0xff) << 24)
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| ((data[position + 2] & 0xff) << 16)
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| ((data[position + 1] & 0xff) << 8)
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| (data[position] & 0xff);
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}
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public static int GetShort(byte[] data, int position, RcByteOrder order)
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{
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return order == RcByteOrder.BIG_ENDIAN ? GetShortBE(data, position) : GetShortLE(data, position);
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}
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public static int GetShortBE(byte[] data, int position)
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{
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return ((data[position] & 0xff) << 8) | (data[position + 1] & 0xff);
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}
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public static int GetShortLE(byte[] data, int position)
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{
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return ((data[position + 1] & 0xff) << 8) | (data[position] & 0xff);
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}
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public static int PutInt(int value, byte[] data, int position, RcByteOrder order)
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{
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if (order == RcByteOrder.BIG_ENDIAN)
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{
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data[position] = (byte)((uint)value >> 24);
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data[position + 1] = (byte)((uint)value >> 16);
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data[position + 2] = (byte)((uint)value >> 8);
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data[position + 3] = (byte)(value & 0xFF);
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}
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else
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{
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data[position] = (byte)(value & 0xFF);
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data[position + 1] = (byte)((uint)value >> 8);
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data[position + 2] = (byte)((uint)value >> 16);
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data[position + 3] = (byte)((uint)value >> 24);
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}
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return position + 4;
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}
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public static int PutShort(int value, byte[] data, int position, RcByteOrder order)
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{
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if (order == RcByteOrder.BIG_ENDIAN)
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{
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data[position] = (byte)((uint)value >> 8);
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data[position + 1] = (byte)(value & 0xFF);
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}
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else
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{
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data[position] = (byte)(value & 0xFF);
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data[position + 1] = (byte)((uint)value >> 8);
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}
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return position + 2;
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}
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}
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} |