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(MCG): implemented 8bpp images.

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This commit is contained in:
morkt
2017-01-14 12:24:11 +04:00
parent 6e9064bc50
commit 6604bbe698
2 changed files with 86 additions and 27 deletions
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62
ArcFormats/FC01/ImageMCG.cs
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@@ -28,6 +28,7 @@ using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using GameRes.Formats.Properties;
using GameRes.Formats.Strings;
using GameRes.Utility;
@@ -79,7 +80,7 @@ namespace GameRes.Formats.FC01
if (header_size < 0x40)
return null;
int bpp = header.ToInt32 (0x24);
if (24 != bpp)
if (24 != bpp && 8 != bpp)
throw new NotSupportedException ("Not supported MCG image bitdepth");
return new McgMetaData
{
@@ -111,11 +112,11 @@ namespace GameRes.Formats.FC01
else
key = LastKey.Value;
}
var reader = new McgDecoder (stream.AsStream, meta, key);
var reader = new McgDecoder (stream, meta, key);
reader.Unpack();
if (reader.Key != 0)
LastKey = reader.Key;
return ImageData.Create (info, PixelFormats.Bgr24, null, reader.Data, reader.Stride);
return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
}
public override void Write (Stream file, ImageData image)
@@ -152,33 +153,49 @@ namespace GameRes.Formats.FC01
int m_height;
int m_pixels;
byte m_key;
int m_version;
IBinaryStream m_file;
McgMetaData m_info;
public byte[] Data { get { return m_output; } }
public int Stride { get; private set; }
public byte Key { get { return m_key; } }
public byte Key { get { return m_key; } }
public byte[] Data { get { return m_output; } }
public int Stride { get; private set; }
public PixelFormat Format { get; private set; }
public BitmapPalette Palette { get; private set; }
public McgDecoder (Stream input, McgMetaData info, byte key)
public McgDecoder (IBinaryStream input, McgMetaData info, byte key)
{
input.Position = info.DataOffset;
m_input = new byte[info.PackedSize];
if (m_input.Length != input.Read (m_input, 0, m_input.Length))
throw new InvalidFormatException ("Unexpected end of file");
m_file = input;
m_info = info;
m_width = (int)info.Width;
m_height = (int)info.Height;
m_pixels = m_width*m_height;
m_key = key;
m_version = info.Version;
Stride = 3 * m_width;
if (101 == m_version)
Stride = m_width * m_info.BPP / 8;
if (101 == m_info.Version)
Stride = (Stride + 3) & -4;
if (24 == m_info.BPP)
Format = PixelFormats.Bgr24;
else if (8 == m_info.BPP)
Format = PixelFormats.Indexed8;
else
throw new InvalidFormatException();
}
static readonly byte[] ChannelOrder = { 1, 0, 2 };
public void Unpack ()
{
if (200 == m_version)
m_file.Position = m_info.DataOffset;
int input_size = m_info.PackedSize;
if (8 == m_info.BPP)
{
ReadPalette();
input_size -= 0x400;
}
m_input = m_file.ReadBytes (input_size);
if (m_input.Length != input_size)
throw new InvalidFormatException ("Unexpected end of file");
if (200 == m_info.Version)
UnpackV200();
else
UnpackV101();
@@ -297,5 +314,18 @@ namespace GameRes.Formats.FC01
m_output[dst++] = (byte)(r + g);
}
}
void ReadPalette ()
{
var palette_data = m_file.ReadBytes (0x400);
int src = 0;
var colors = new Color[0x100];
for (int i = 0; i < 0x100; ++i)
{
colors[i] = Color.FromRgb (palette_data[src+2], palette_data[src+1], palette_data[src]);
src += 4;
}
Palette = new BitmapPalette (colors);
}
}
}