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MTL images (unfinished).

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morkt 2018-06-19 12:57:29 +04:00
parent c08d675e5e
commit 4acf1a178b
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ArcFormats/Zyx/ImageMTL.cs Normal file
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//! \file ImageMTL.cs
//! \date 2018 May 26
//! \brief Zyx image format.
//
// Copyright (C) 2018 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using GameRes.Utility;
namespace GameRes.Formats.Zyx
{
internal class MtlMetaData : ImageMetaData
{
public long DataOffset;
}
[Export(typeof(ImageFormat))]
public class MtlFormat : ImageFormat
{
public override string Tag { get { return "MTL"; } }
public override string Description { get { return "Zyx image format"; } }
public override uint Signature { get { return 0x4154454D; } } // 'METAL'
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x2C);
if (!header.AsciiEqual ("METAL") || header.ToInt32 (0x10) != 0x28 || header[0x15] == 0)
return null;
int name_length = header.ToInt32 (0x28);
if (name_length <= 0)
return null;
var name = file.ReadCString (name_length);
if (file.ReadInt32() != 0xC)
return null;
int frame_count = file.ReadInt32();
if (!ArchiveFormat.IsSaneCount (frame_count))
return null;
var data_pos = file.Position + frame_count * 0x18;
return new MtlMetaData {
Width = header.ToUInt32 (0x20),
Height = header.ToUInt32 (0x24),
BPP = 32,
DataOffset = data_pos,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var reader = new MtlReader (file, (MtlMetaData)info);
var pixels = reader.Unpack();
return ImageData.Create (info, reader.Format, null, pixels);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("MtlFormat.Write not implemented");
}
}
internal class MtlReader
{
IBinaryStream m_input;
MtlMetaData m_info;
byte[] m_output;
public PixelFormat Format { get; private set; }
public byte[] Data { get { return m_output; } }
public MtlReader (IBinaryStream input, MtlMetaData info)
{
m_input = input;
m_info = info;
m_output = new byte[m_info.Width * m_info.Height * 4];
Format = PixelFormats.Bgr32;
}
public byte[] Unpack ()
{
int stride = (int)m_info.Width * 4;
var offsets = new int[] { 4, stride, stride + 4, stride - 4 };
m_input.Position = m_info.DataOffset;
int dst = 0;
while (dst < m_output.Length)
{
byte ctl = m_input.ReadUInt8();
int count = 0;
if (0 == (ctl & 0x80))
{
count = (ctl & 0x7F) + 1;
int pos = 0;
for (int i = 0; i < count; ++i)
{
m_input.Read (m_output, dst + pos, 3);
pos += 4;
}
}
else if (0x80 == (ctl & 0xC0))
{
count = (ctl & 0x3F) + 1;
}
else if (0xC0 == (ctl & 0xE0))
{
count = (ctl & 0x1F) + 1;
m_input.Read (m_output, dst, 3);
Binary.CopyOverlapped (m_output, dst, dst + 4, count * 4);
++count;
}
else if (0xE0 == (ctl & 0xF0))
{
count = 1;
int offset = offsets[ctl & 3];
Buffer.BlockCopy (m_output, dst - offset, m_output, dst, 4);
}
else if (0xF0 == (ctl & 0xF0))
{
int offset = 0;
if (0 != (ctl & 1))
{
offset = m_input.ReadUInt16();
}
else
{
offset = m_input.ReadUInt8();
}
if (8 == (ctl & 8))
{
if (0 != (ctl & 2))
{
count = m_input.ReadUInt16();
}
else
{
count = m_input.ReadUInt8();
}
}
++offset;
++count;
Binary.CopyOverlapped (m_output, dst - offset * 4, dst, count * 4);
}
dst += count * 4;
}
return m_output;
}
}
}