mirror of
https://github.com/crskycode/GARbro.git
synced 2024-10-23 15:48:16 +08:00
276 lines
9.7 KiB
C#
276 lines
9.7 KiB
C#
//! \file ImageGCmp.cs
|
|
//! \date 2017 Dec 01
|
|
//! \brief Nekotaro Game System compressed 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;
|
|
using System.ComponentModel.Composition;
|
|
using System.IO;
|
|
using System.Windows.Media;
|
|
using System.Windows.Media.Imaging;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.Nekotaro
|
|
{
|
|
[Export(typeof(ImageFormat))]
|
|
public class GCmpFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "GCMP"; } }
|
|
public override string Description { get { return "Nekotaro Game System image format"; } }
|
|
public override uint Signature { get { return 0x706D4347; } } // 'GCmp'
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream file)
|
|
{
|
|
var header = file.ReadHeader (0x10);
|
|
int bpp = header[12];
|
|
if (bpp != 24 && bpp != 8 && bpp != 1)
|
|
return null;
|
|
return new ImageMetaData {
|
|
Width = header.ToUInt16 (8),
|
|
Height = header.ToUInt16 (10),
|
|
BPP = bpp,
|
|
};
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream file, ImageMetaData info)
|
|
{
|
|
using (var reader = new GCmpDecoder (file, info, this, true))
|
|
return reader.Image;
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new System.NotImplementedException ("GCmpFormat.Write not implemented");
|
|
}
|
|
}
|
|
|
|
internal sealed class GCmpDecoder : IImageDecoder
|
|
{
|
|
IBinaryStream m_input;
|
|
ImageData m_image;
|
|
bool m_should_dispose;
|
|
|
|
public Stream Source { get { return m_input.AsStream; } }
|
|
public ImageFormat SourceFormat { get; private set; }
|
|
public ImageMetaData Info { get; private set; }
|
|
public PixelFormat Format { get; private set; }
|
|
public BitmapPalette Palette { get; private set; }
|
|
public int Stride { get; private set; }
|
|
public ImageData Image {
|
|
get {
|
|
if (null == m_image)
|
|
{
|
|
var pixels = Unpack();
|
|
m_image = ImageData.CreateFlipped (Info, Format, Palette, pixels, Stride);
|
|
}
|
|
return m_image;
|
|
}
|
|
}
|
|
|
|
public GCmpDecoder (IBinaryStream input, ImageMetaData info, ImageFormat source, bool leave_open = false)
|
|
{
|
|
m_input = input;
|
|
Info = info;
|
|
SourceFormat = source;
|
|
m_should_dispose = !leave_open;
|
|
if (info.BPP > 1)
|
|
Stride = (int)info.Width * info.BPP / 8;
|
|
else
|
|
Stride = ((int)info.Width + 7) / 8;
|
|
}
|
|
|
|
public byte[] Unpack ()
|
|
{
|
|
m_input.Position = 0x10;
|
|
if (24 == Info.BPP)
|
|
return Unpack24bpp();
|
|
else
|
|
return Unpack8bpp();
|
|
}
|
|
|
|
byte[] Unpack24bpp ()
|
|
{
|
|
Format = PixelFormats.Bgr24;
|
|
int pixel_count = (int)(Info.Width * Info.Height);
|
|
var output = new byte[pixel_count * Info.BPP / 8 + 1];
|
|
var frame = new byte[384];
|
|
int dst = 0;
|
|
int v19 = 0;
|
|
while (pixel_count > 0)
|
|
{
|
|
int count, frame_pos, pixel;
|
|
if (v19 != 0)
|
|
{
|
|
pixel = m_input.ReadInt24();
|
|
count = 1;
|
|
frame_pos = 127;
|
|
--v19;
|
|
}
|
|
else
|
|
{
|
|
count = m_input.ReadUInt8();
|
|
int lo = count & 0x1F;
|
|
if (0 != (count & 0x80))
|
|
{
|
|
count = ((byte)count >> 5) & 3;
|
|
if (count != 0)
|
|
{
|
|
frame_pos = lo;
|
|
}
|
|
else
|
|
{
|
|
count = lo << 1;
|
|
frame_pos = m_input.ReadUInt8();
|
|
if (0 != (frame_pos & 0x80))
|
|
++count;
|
|
frame_pos &= 0x7F;
|
|
}
|
|
if (0 == count)
|
|
{
|
|
count = m_input.ReadInt32();
|
|
}
|
|
int fpos = 3 * frame_pos;
|
|
pixel = frame[fpos] | frame[fpos+1] << 8 | frame[fpos+2] << 16;
|
|
}
|
|
else
|
|
{
|
|
if (1 == count)
|
|
{
|
|
v19 = m_input.ReadUInt8() - 1;
|
|
}
|
|
else if (0 == count)
|
|
{
|
|
count = m_input.ReadInt32();
|
|
}
|
|
pixel = m_input.ReadInt24();
|
|
frame_pos = 127;
|
|
}
|
|
}
|
|
if (count > pixel_count)
|
|
count = pixel_count;
|
|
pixel_count -= count;
|
|
LittleEndian.Pack (pixel, output, dst);
|
|
dst += 3;
|
|
if (--count > 0)
|
|
{
|
|
count *= 3;
|
|
Binary.CopyOverlapped (output, dst - 3, dst, count);
|
|
dst += count;
|
|
}
|
|
if (frame_pos != 0)
|
|
Buffer.BlockCopy (frame, 0, frame, 3, 3 * frame_pos);
|
|
frame[0] = (byte)pixel;
|
|
frame[1] = (byte)(pixel >> 8);
|
|
frame[2] = (byte)(pixel >> 16);
|
|
}
|
|
return output;
|
|
}
|
|
|
|
byte[] Unpack8bpp ()
|
|
{
|
|
Format = 8 == Info.BPP ? PixelFormats.Gray8 : PixelFormats.BlackWhite;
|
|
int pixel_count = (int)Info.Height * Stride;
|
|
var output = new byte[pixel_count];
|
|
int dst = 0;
|
|
byte[] frame = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 0xFF };
|
|
|
|
int count = pixel_count;
|
|
int extra_count = pixel_count;
|
|
while (pixel_count > 0)
|
|
{
|
|
byte pixel;
|
|
int frame_pos;
|
|
byte ctl = m_input.ReadUInt8();
|
|
int hi = ctl >> 4;
|
|
int lo = ctl & 0xF;
|
|
if (hi != 0)
|
|
{
|
|
frame_pos = hi - 1;
|
|
pixel = frame[frame_pos];
|
|
count = lo + 1;
|
|
}
|
|
else
|
|
{
|
|
switch (lo)
|
|
{
|
|
default:
|
|
count = lo + 1;
|
|
break;
|
|
case 10:
|
|
count = m_input.ReadUInt8() + 11;
|
|
break;
|
|
case 11:
|
|
count = m_input.ReadUInt16() + 267;
|
|
break;
|
|
case 12:
|
|
count = m_input.ReadInt32() + 65803;
|
|
break;
|
|
case 13:
|
|
extra_count = 0x10;
|
|
count = m_input.ReadUInt8();
|
|
break;
|
|
case 14:
|
|
extra_count = 0x120;
|
|
count = m_input.ReadUInt16();
|
|
break;
|
|
case 15:
|
|
extra_count = 0x10130;
|
|
count = m_input.ReadInt32();
|
|
break;
|
|
}
|
|
pixel = m_input.ReadUInt8();
|
|
if (lo < 13)
|
|
{
|
|
frame_pos = 14;
|
|
}
|
|
else
|
|
{
|
|
lo = pixel & 0xF;
|
|
frame_pos = (pixel >> 4) - 1;
|
|
pixel = frame[frame_pos];
|
|
count = extra_count + 16 * count + lo + 1;
|
|
}
|
|
}
|
|
if (count > pixel_count)
|
|
count = pixel_count;
|
|
pixel_count -= count;
|
|
for (int i = 0; i < count; ++i)
|
|
output[dst++] = pixel;
|
|
Buffer.BlockCopy (frame, 0, frame, 1, frame_pos);
|
|
frame[0] = pixel;
|
|
}
|
|
return output;
|
|
}
|
|
|
|
bool m_disposed = false;
|
|
public void Dispose ()
|
|
{
|
|
if (!m_disposed && m_should_dispose)
|
|
{
|
|
m_input.Dispose();
|
|
m_disposed = true;
|
|
}
|
|
}
|
|
}
|
|
}
|