forked from mirror/DotRecast
135 lines
4.2 KiB
C#
135 lines
4.2 KiB
C#
/*
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Recast4J Copyright (c) 2015 Piotr Piastucki piotr@jtilia.org
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DotRecast Copyright (c) 2023 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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using System;
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using System.IO;
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namespace DotRecast.Core
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{
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public static class RcIO
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{
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public static RcByteBuffer ToByteBuffer(BinaryReader br, bool direct)
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{
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byte[] data = ToByteArray(br);
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if (direct)
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{
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Array.Reverse(data);
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}
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return new RcByteBuffer(data);
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}
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public static byte[] ToByteArray(BinaryReader br)
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{
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using var ms = new MemoryStream();
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Span<byte> buffer = stackalloc byte[4096];
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int l;
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while ((l = br.Read(buffer)) > 0)
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{
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ms.Write(buffer.Slice(0, l));
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}
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return ms.ToArray();
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}
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public static RcByteBuffer ToByteBuffer(BinaryReader br)
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{
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var bytes = ToByteArray(br);
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return new RcByteBuffer(bytes);
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}
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public static int SwapEndianness(int i)
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{
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var s = (((uint)i >> 24) & 0xFF) | (((uint)i >> 8) & 0xFF00) | (((uint)i << 8) & 0xFF0000) | ((i << 24) & 0xFF000000);
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return (int)s;
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}
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public static void Write(BinaryWriter ws, float value, RcByteOrder order)
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{
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byte[] bytes = BitConverter.GetBytes(value);
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int i = BitConverter.ToInt32(bytes, 0);
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Write(ws, i, order);
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}
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public static void Write(BinaryWriter ws, short value, RcByteOrder order)
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{
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if (order == RcByteOrder.BIG_ENDIAN)
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{
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ws.Write((byte)((value >> 8) & 0xFF));
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ws.Write((byte)(value & 0xFF));
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}
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else
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{
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ws.Write((byte)(value & 0xFF));
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ws.Write((byte)((value >> 8) & 0xFF));
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}
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}
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public static void Write(BinaryWriter ws, long value, RcByteOrder order)
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{
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if (order == RcByteOrder.BIG_ENDIAN)
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{
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Write(ws, (int)((ulong)value >> 32), order);
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Write(ws, (int)(value & 0xFFFFFFFF), order);
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}
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else
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{
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Write(ws, (int)(value & 0xFFFFFFFF), order);
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Write(ws, (int)((ulong)value >> 32), order);
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}
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}
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public static void Write(BinaryWriter ws, int value, RcByteOrder order)
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{
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if (order == RcByteOrder.BIG_ENDIAN)
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{
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ws.Write((byte)((value >> 24) & 0xFF));
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ws.Write((byte)((value >> 16) & 0xFF));
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ws.Write((byte)((value >> 8) & 0xFF));
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ws.Write((byte)(value & 0xFF));
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}
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else
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{
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ws.Write((byte)(value & 0xFF));
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ws.Write((byte)((value >> 8) & 0xFF));
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ws.Write((byte)((value >> 16) & 0xFF));
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ws.Write((byte)((value >> 24) & 0xFF));
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}
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}
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public static void Write(BinaryWriter ws, bool value)
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{
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Write(ws, (byte)(value ? 1 : 0));
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}
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public static void Write(BinaryWriter ws, byte value)
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{
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ws.Write(value);
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}
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public static void Write(BinaryWriter ws, MemoryStream ms)
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{
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ms.Position = 0;
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byte[] buffer = new byte[ms.Length];
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ms.Read(buffer, 0, buffer.Length);
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ws.Write(buffer);
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}
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}
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} |