72 lines
1.6 KiB
C#
72 lines
1.6 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright (c) The OpenRA Developers and Contributors
|
|
* 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
|
|
|
|
using System.IO;
|
|
using System.Linq;
|
|
using OpenRA.Mods.Cnc.FileFormats;
|
|
using OpenRA.Video;
|
|
|
|
namespace OpenRA.Mods.Cnc.VideoLoaders
|
|
{
|
|
public class WsaLoader : IVideoLoader
|
|
{
|
|
public bool TryParseVideo(Stream s, bool useFramePadding, out IVideo video)
|
|
{
|
|
video = null;
|
|
|
|
if (s.Length == 0)
|
|
return false;
|
|
|
|
if (!IsWsa(s))
|
|
return false;
|
|
|
|
video = new WsaVideo(s, useFramePadding);
|
|
return true;
|
|
}
|
|
|
|
static bool IsWsa(Stream s)
|
|
{
|
|
var start = s.Position;
|
|
|
|
var frames = s.ReadUInt16();
|
|
if (frames <= 1) // TODO: find a better way to differentiate .shp icons
|
|
return false;
|
|
|
|
/* var x = */ s.ReadUInt16();
|
|
/* var y = */ s.ReadUInt16();
|
|
var width = s.ReadUInt16();
|
|
var height = s.ReadUInt16();
|
|
|
|
if (width <= 0 || height <= 0)
|
|
return false;
|
|
|
|
/*var delta = */ s.ReadUInt16(); /* + 37;*/
|
|
|
|
var flags = s.ReadUInt16();
|
|
|
|
var offsets = new uint[frames + 2];
|
|
for (var i = 0; i < offsets.Length; i++)
|
|
offsets[i] = s.ReadUInt32();
|
|
|
|
if (flags == 1)
|
|
{
|
|
/* var palette = */ s.ReadBytes(768);
|
|
for (var i = 0; i < offsets.Length; i++)
|
|
offsets[i] += 768;
|
|
}
|
|
|
|
s.Position = start;
|
|
|
|
return s.Length == offsets.Last();
|
|
}
|
|
}
|
|
}
|