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(Legacy): implemented GRB images.

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morkt 2017-12-26 19:58:12 +04:00
parent 8d3a584072
commit 497cd4414c
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Legacy/CrossNet/ImageGRB.cs Normal file
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//! \file ImageGRB.cs
//! \date 2017 Dec 22
//! \brief CrossNet/Studio Jikkenshitsu image format.
//
// Copyright (C) 2017 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;
namespace GameRes.Formats.CrossNet
{
internal class GrbMetaData : ImageMetaData
{
public uint BitsOffset;
public uint DataOffset;
}
[Export(typeof(ImageFormat))]
public class GrbFormat : ImageFormat
{
public override string Tag { get { return "GRB"; } }
public override string Description { get { return "CrossNet image format"; } }
public override uint Signature { get { return 8; } }
public GrbFormat ()
{
Signatures = new uint[] { 8, 1 };
}
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x18);
int bpp = header.ToInt32 (0);
uint width = header.ToUInt16 (4);
uint height = header.ToUInt16 (6);
uint bits_offset = header.ToUInt32 (8);
uint data_offset = header.ToUInt32 (0x10);
if (0 == width || width > 0x8000 || 0 == height || height > 0x8000
|| bits_offset >= file.Length || bits_offset < 0x18
|| data_offset >= file.Length || data_offset < 0x18)
return null;
return new GrbMetaData {
Width = width,
Height = height,
BPP = bpp,
BitsOffset = bits_offset,
DataOffset = data_offset,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var reader = new GrbReader (file, (GrbMetaData)info);
reader.Unpack();
return ImageData.CreateFlipped (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("GrbFormat.Write not implemented");
}
}
internal sealed class GrbReader
{
IBinaryStream m_input;
GrbMetaData m_info;
int m_width;
int m_stride;
int m_height;
byte[] m_output;
public int Stride { get { return m_stride; } }
public PixelFormat Format { get; private set; }
public BitmapPalette Palette { get; private set; }
public byte[] Data { get { return m_output; } }
public GrbReader (IBinaryStream input, GrbMetaData info)
{
m_input = input;
m_info = info;
m_height = (int)info.Height;
switch (info.BPP)
{
case 1:
Format = PixelFormats.Indexed1;
m_width = (int)(info.Width + 0x1F) & ~0x1F;
m_stride = m_width / 8;
break;
case 8:
Format = PixelFormats.Indexed8;
m_width = (int)(info.Width + 3) & ~3;
m_stride = m_width;
break;
default:
throw new InvalidFormatException();
}
m_output = new byte[m_height * m_stride];
}
public void Unpack ()
{
m_input.Position = 0x18;
if (m_info.BPP < 15)
{
Palette = ImageFormat.ReadPalette (m_input.AsStream, 1 << m_info.BPP);
}
var row_data = m_input.ReadBytes (m_height);
int blocks = m_width >> 2;
m_input.Position = m_info.BitsOffset;
var ctl_data = m_input.ReadBytes (m_height * blocks);
int src = 0;
int dst = 0;
var offsets = new int[4,4] {
{ 0, -1, -m_width, -m_width-1 },
{ 0, -1, -2, -3 },
{ 0, -m_width, -m_width * 2, -m_width * 3 },
{ 0, -m_width-1, -m_width, -m_width+1 }
};
m_input.Position = m_info.DataOffset;
for (int y = 0; y < m_height; ++y)
{
byte row = row_data[y];
for (int x = 0; x < blocks; ++x)
{
byte ctl = ctl_data[src+x];
for (int bit_pos = 6; bit_pos >= 0; bit_pos -= 2)
{
byte v;
int bits = (ctl >> bit_pos) & 3;
if (bits != 0)
v = m_output[dst + offsets[row,bits]];
else
v = m_input.ReadUInt8();
m_output[dst++] = v;
}
}
src += blocks;
}
}
}
}