GARbro-mirror/Legacy/Uran/ImageDAR.cs

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2023-08-24 05:33:50 +08:00
//! \file ImageDAR.cs
//! \date 2022 May 11
//! \brief Uran image format.
//
// Copyright (C) 2022 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.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using System.Windows.Media.Imaging;
// [970525][Uran] High School Terra Story
namespace GameRes.Formats.Uran
{
public class DarMetaData : ImageMetaData
{
public byte Version;
public int FrameCount;
public long FrameOffset;
public int RowSize;
}
[Export(typeof(ImageFormat))]
public class DarFormat : ImageFormat
{
public override string Tag { get { return "DAR"; } }
public override string Description { get { return "Uran image format"; } }
public override uint Signature { get { return 0x3A524144; } } // 'DAR:'
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (12);
byte version = header[5];
int frame_count = header.ToUInt16 (6);
if (header[4] != '8' || version > 1 || frame_count < 1)
return null;
file.Position = 0x40C;
int header_size = 8;
if (version != 0)
header_size = file.ReadUInt16();
long frame_offset = file.Position;
ushort width = file.ReadUInt16(); // +0
ushort height = file.ReadUInt16(); // +1
ushort row_size = file.ReadUInt16(); // +2
file.ReadUInt16(); // +3
int bpp = 8;
if (header_size >= 14)
{
file.ReadInt16(); // +4
file.ReadInt16(); // +5
file.ReadUInt16(); // +6 height
if (header_size >= 16)
{
int count = file.ReadUInt8(); // [14]
if (count + 18 <= header_size)
{
file.Seek (count - 1, SeekOrigin.Current);
bpp = file.ReadUInt8(); // [count+14]
}
}
}
return new DarMetaData {
Width = width,
Height = height,
BPP = bpp,
Version = version,
FrameCount = frame_count,
FrameOffset = frame_offset + header_size,
RowSize = row_size,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var reader = new DarReader (file, (DarMetaData)info);
return reader.Unpack();
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("DarFormat.Write not implemented");
}
}
internal class DarReader
{
IBinaryStream m_input;
DarMetaData m_info;
public ImageMetaData Info { get { return m_info; } }
public BitmapPalette Palette { get; private set; }
public DarReader (IBinaryStream input, DarMetaData info)
{
m_input = input;
m_info = info;
}
public ImageData Unpack ()
{
if (8 == m_info.BPP)
{
m_input.Position = 0x0C;
Palette = ImageFormat.ReadPalette (m_input.AsStream);
}
int depth = m_info.BPP / 8;
long row_pos = m_info.FrameOffset;
int stride = m_info.iWidth * depth;
var pixels = new byte[stride * m_info.iHeight];
int dst = pixels.Length - stride;
while (dst >= 0)
{
m_input.Position = row_pos;
int x = m_input.ReadInt16();
int row_length = m_input.ReadUInt16();
if (row_length != 0)
m_input.Read (pixels, dst + x, row_length);
row_pos += m_info.RowSize;
dst -= stride;
}
PixelFormat format = depth == 1 ? PixelFormats.Indexed8 : PixelFormats.Bgr24;
return ImageData.Create (m_info, format, Palette, pixels, stride);
}
}
}