Files
OpenRA/OpenRA.Mods.Common/FileFormats/RLEZerosCompression.cs
2016-12-31 23:46:13 -06:00

36 lines
895 B
C#

#region Copyright & License Information
/*
* Copyright 2007-2017 The OpenRA Developers (see AUTHORS)
* This file is part of OpenRA, which is free software. It is made
* available to you under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version. For more
* information, see COPYING.
*/
#endregion
namespace OpenRA.Mods.Common.FileFormats
{
// Run length encoded sequences of zeros (aka Format2)
public static class RLEZerosCompression
{
public static void DecodeInto(byte[] src, byte[] dest, int destIndex)
{
var r = new FastByteReader(src);
while (!r.Done())
{
var cmd = r.ReadByte();
if (cmd == 0)
{
var count = r.ReadByte();
while (count-- > 0)
dest[destIndex++] = 0;
}
else
dest[destIndex++] = cmd;
}
}
}
}