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(Candy): implemented compressed images.

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morkt 2018-08-31 04:38:37 +04:00
parent d7504811bc
commit 3c023d1b6b
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ArcFormats/Interheart/ImageCandy.cs Normal file
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//! \file ImageCandy.cs
//! \date 2018 Aug 24
//! \brief Candy Soft 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 System.Windows.Media.Imaging;
using GameRes.Utility;
namespace GameRes.Formats.Interheart
{
internal class CandyMetaData : ImageMetaData
{
public int Colors;
}
[Export(typeof(ImageFormat))]
public class CandyFormat : ImageFormat
{
public override string Tag { get { return "PIC/CANDY"; } }
public override string Description { get { return "Candy Soft image format"; } }
public override uint Signature { get { return 0; } }
public CandyFormat ()
{
Extensions = new string[] { "" };
}
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (10);
if (BigEndian.ToUInt16 (header, 0) != 10 || header[7] != 1)
return null;
return new CandyMetaData {
Width = BigEndian.ToUInt16 (header, 2),
Height = BigEndian.ToUInt16 (header, 4),
BPP = header[6],
Colors = BigEndian.ToUInt16 (header, 8),
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var reader = new CandyDecoder (file, (CandyMetaData)info);
var pixels = reader.Unpack();
return ImageData.Create (info, reader.Format, reader.Palette, pixels);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("CandyFormat.Write not implemented");
}
}
internal class CandyDecoder
{
IBinaryStream m_input;
byte[] m_output;
int m_width;
int m_height;
int m_stride;
int m_colors;
public PixelFormat Format { get; private set; }
public BitmapPalette Palette { get; private set; }
public CandyDecoder (IBinaryStream input, CandyMetaData info)
{
m_input = input;
m_width = (int)info.Width;
m_height = (int)info.Height;
m_colors = info.Colors;
if (32 == info.BPP)
{
m_stride = (int)m_width * 3;
Format = PixelFormats.Bgr24;
}
else
{
m_stride = (int)m_width;
Format = PixelFormats.Indexed8;
}
m_output = new byte[m_stride * m_height];
}
public byte[] Unpack ()
{
m_input.Position = 0xA;
if (m_colors > 0)
Palette = ReadPalette();
LzUnpack();
if (m_colors > 0)
return m_output;
var pixels = new byte[m_output.Length];
int src = 0;
for (int block_y = 0; block_y < m_height; block_y += 80)
for (int block_x = 0; block_x < m_width; block_x += 80)
{
int dst_col = block_y * m_stride + block_x * 3;
int block_height = Math.Min (80, m_height - block_y);
int block_width = Math.Min (80, m_width - block_x);
for (int x = 0; x < block_width; ++x)
{
int dst = dst_col;
for (int y = 0; y < block_height; ++y)
{
pixels[dst+2] = m_output[src++];
pixels[dst+1] = m_output[src++];
pixels[dst ] = m_output[src++];
dst += m_stride;
}
dst_col += 3;
}
}
return pixels;
}
void LzUnpack ()
{
var bits = new byte[16];
var frame = new byte[0x1000];
int frame_pos = 0;
int dst = 0;
while (dst < m_output.Length)
{
int ctl = m_input.ReadByte();
if (-1 == ctl)
break;
bits[0] = (byte)(ctl & 1);
bits[1] = 1;
int count = 0;
for (int i = 1; i < 8; ++i)
{
ctl >>= 1;
if (bits[2*count] == (ctl & 1))
{
++bits[2*count + 1];
}
else
{
++count;
bits[2*count] = (byte)(ctl & 1);
bits[2*count + 1] = 1;
}
}
for (int i = 0; i <= count && dst < m_output.Length; ++i)
{
int bpos = 2*i;
if (bits[bpos++] != 0)
{
while (bits[bpos] > 0)
{
byte b = m_input.ReadUInt8();
m_output[dst++] = frame[frame_pos++ & 0xFFF] = b;
--bits[bpos];
}
}
else
{
while (bits[bpos] > 0 && dst < m_output.Length)
{
int offset = m_input.ReadUInt16();
int zcount = Math.Min ((offset & 0xF) + 3, m_output.Length - dst);
offset >>= 4;
for (int j = 0; j < zcount; ++j)
{
byte b = frame[offset++ & 0xFFF];
m_output[dst++] = frame[frame_pos++ & 0xFFF] = b;
}
--bits[bpos];
}
}
}
}
}
BitmapPalette ReadPalette ()
{
var palette_data = new byte[4 * m_colors];
if (palette_data.Length != m_input.Read (palette_data, 0, palette_data.Length))
throw new EndOfStreamException();
int src = 0;
var color_map = new Color[m_colors];
for (int i = 0; i < m_colors; ++i)
{
color_map[i] = Color.FromRgb (palette_data[src+1], palette_data[src+2], palette_data[src+3]);
src += 4;
}
return new BitmapPalette (color_map);
}
}
}